Types of motion sensor
Motion sensors are divided into two types.
What is a Motion Sensor?
1
The motion sensor is an infrared
human detection sensor, which, as
opposed to factor y automation sen-
sors that are used with factor y
equipment, is designed to be incor-
porated into various devices that
exist around us in daily life. Motion sensors are not for use in
factory automation.
Passive infrared type
Designed to cover a wide area, this sensor detects
human presence.The sensor, rather than emitting light
such as from LEDs, detects the amount of change in
infrared rays that occurs when a person (object),
whose temperature is different from the surroundings,
moves.
1. As this sensor
detects temperature
differences, it is well
suited to detecting
the motion of people
by their body tem-
perature.
2. Wide sensing area.
3. Detection
distance cannot
be set.
Spot type 10m detection type
Standard type Slight motion
detection type
Area reflective type
As the name implies this sensor emits infrared rays
from an LED. Using the reflection of those rays the
sensor measures the distance to the person (object)
and detects whether or not it is exists within a spe-
cific distance.
(1) Suitable for detection within specific ranges.
(2) Possible to select the detection distance.
• Selection possible in 1 cm increments between 5 cm and 10
cm.
• Selection possible in 10 cm increments between 20 cm and
200 cm.
Sensor
Short type
(5 cm to 10 cm)
Long type
(Horizontal
installation)
(30 cm to
200 cm)
Long type
(Vertical
installation)
(30 cm to
200 cm)
Middle type
(20 cm to 80 cm)
Infrared radiation
Sensor
Temperature
difference
Movement
Infrared radiation
The world’s smallest with a built-in amplifier
MP Motion Sensor ‘ ’
A compact distance-type sensor that is not easily
influenced by reflection ratio.
MA Motion Sensor
feature 02.2.12 1:56 PM Page 8
Other application examples
Recommended conditions of use
1. Detection over a wide area (see note).
2.When the detection range extends to the wall or floor.
Note: If you wish to limit the range of detection, we recommended a spot type sensor.
1.What is a Motion Sensor?
Application of MP Motion Sensor ‘ ’
Automatically turn indoor lighting on and off
Method of use
Use as a human detection sensor to automatically
turn lights on when a person is present in a room
and to turn them off when nobody is there.
Points to consider when selecting
a sensor
1. The presence of a person must be detected
over a side area (room).
2. Even slight human motion must be detected.
MP Motion Sensor
Conference room control sensor Automatic verbal address system Lighting control for vending
machine
Amusement park facilities: Automatic
control of devices (Establishes timing for device
start-up.
Monitor camera Control of air conditioner louver
feature 02.2.12 1:56 PM Page 9
On/Off of smoke dispersal
machine Sink and dresser light Energy saving mode of computer
monitor
Verbal guidance machine for the
blind Detection of toilet use Entry light
Desk light On/off of TV power Control ATM displays
feature 02.2.12 1:56 PM Page 10
1.What is a Motion Sensor?
Application of MA Motion Sensor
Other application examples
Recommended conditions of use
1.
Non-moving people (objects) and objects without a temperature difference are to be detected.
2.The detection distance and area must be limited (see note).
Note: With the aim of widening the detection range, the external trigger type, which prevents reciprocal interfer-
ence, is recommended when using multiple sensors.
Automatic water faucets Non-contact switch for the toilet Customer detecting sensors for
automated teller machines
Customer sensor Automatic ticket gate Parking meter
Sensor
Welcome
Running machine in athletic club Method of use
To prevent the runner from falling when he or she
tires and becomes unable to keep up with the
belt, the sensor slows the belt when the runner
falls back out of the detection area of the sensor.
Points to consider when selecting a sensor
1. The detection area must be limited so that only
the person using the running machine is
detected.
2. The detection distance must be limited.
MA Motion Sensor
Sensing area
Toilet seat opening & closing control
Lighting control
Flushing switch
feature 02.2.12 1:56 PM Page 11
Examples of automatic advertising and automatic verbal guidance
(ticket machines, vending machines, ATMs, illuminated photographs, etc.)
1.What is a Motion Sensor?
Application example
Select a sensor that suits the objective.
Detection is necessar y over a
wide area, therefore we recom-
mended the passive infrared type
‘ ’ MP Motion Sensor.
The presence of a person in a very
limited range must be detected, there-
fore the detection area is small.We
recommend the area reflective type
MA Motion Sensor, which enables the
detection range to be select.
2.When a person is close to
the device:
•The device is turned on
•Instructions for using the
machine are heard
1.Advertising when a person walks
past the device.
The current situation:
Techniques for reducing device power
consumption will increase dramatically.
To preserve the global environment
At the Kyoto conference for the prevention of global warming held in 1997, it was
agreed that “by 2008–2012, Japan will attempt to reduce the output of green-
house gases by 6% with respect to 1990 levels.”
Efforts in various fields to reduce greenhouse gases
Environmental action:
The beginning of “energy-saving” competition
From the latter half of 1998 to the former half of 1999, the Ministr y of Inter national
Trade and Industry began enforcement of the Energy Saving Act, which requires
manufacturers to conserve energy.
The focal point of this act is the “Top Runner Method”, whereby “Excellent products” having the
highest energy efficiency are selected.This energy efficiency becomes a standard that other
products are required to meet within a cer tain period. Manufacturers unable to meet this stan-
dard are subject to punishment. A total of ten products are scheduled for implementation,
including automobiles and electrical appliances such as air conditioners, refrigerators, televi-
sions, VCRs, and personal computers.
“Energy saving” is becoming an increasingly impor tant factor in consumer selec-
tion of products. Manufacturers are therefore promoting their technical prowess
and aggressive stance with respect 10 environmental problems.
Manufacturers
Government
feature 02.2.12 1:56 PM Page 13
1.What is a Motion Sensor?
Motion Sensor application examples (1)
The recommended sensor is indicated by either of the following marks behind each application.
; Passive infrared type MP Motion Sensor ‘ ’
; Area reflective type MA Motion Sensor
A
P
Intruder alar m
Glass breaking detector
A
A
P
Automatic lighting
P
Garage light (Automatic lighting)
P
Crime prevention sensor
A
P
Air conditioner control
P
Automatic lighting
P
Gate light
(Automatic lighting)
P
Hallway light
(Automatic lighting)
Entr y way light
(Automatic lighting)
P
A
P
Automatic faucet
A
Automatic ventilation fan
P
Automatic ventilation fan
P
Automatic faucet
A
TV
(Energy conser vation when
nobody is home)
P
Use sensors
in accordance
with their
applications.
A
A
A
A
A
A
P
AP
P
AP
A
A
P
AP
A
A
P
P
P
P
A
A
A
P
AP
AP
AP
A
A
Automatic ventilation fan
Automatic toilet seat
opening/closing
Customer detection for
automated teller machine
Automatic lighting
Occupancy sensor
Automatic flushing
Security
Non-contact switch
Hand dryer
Automatic lighting in
conference room
Customer detection for
3-minute photo machine
Automatic lighting for
vending machine Welcome!
Revolving door
Air bag
Permit dispenser for parking lot
Customer sensor for gasoline stations
Customer sensor
Automatic door
Running machine
Automatic lighting for
Karaoke room, display power
Player detection at Pachinko machine,
power for display of information terminal
Telephone booth lighting
Baggage detection in coin locker
Detection of passengers
getting on/off
Automatic ticket gate
Medical bed safety
(prevent people from being
caught underneath an
elevating bed)
Office building
Parking lot
Hospital
Athletic gym
Amusement area
Station
1.What is a Motion Sensor?
Motion Sensor application examples (2)
The recommended sensor is indicated by either of the following marks behind each
application.
; Passive infrared type MP Motion Sensor ‘ ’
; Area reflective type MA Motion Sensor
A
P
Overall, from the standpoint of detection perfor mance, noise resistance,
causes of false detection and cost perfor mance, the passive infrared type
is the most practical means of detecting the human body without contact.
All objects on the ear th emit light in accor-
dance with their temperature and surface
characteristics. Naturally, light (infrared radia-
tion) is also emitted from our bodies. (This radi-
ation is emitted from the body surface, and is
centered around a wave-length of 10µm.)
When a person enters the detection area of
the sensor, the amount of infrared radiation
incident on the sensor varies by the
amount corresponding to the difference in
temperature between the body surface and
background.
Operating principle of Motion Sensor
2
MP Motion Sensor ‘ ’
These sensors detect the human
body by detecting the change in
incident infrared radiation.
That is, the sensor is actuated by the differ-
ence in temperature between human body
(which is a heat source) and floor, walls and
other objects for ming the background.
Y
X
334m
4m 2
2
3m
3m
2
21
1
1
1
(Max. 7.42m)
(Max. 5.66m)
Y
5m
16.404ft
5m
16.404ft
2.5m
8.202ft
2.5m
8.202ft
41°
41°
0°
SIDE VIEW
Detection area of standard type
Radiation from
human body: 10µm
Infrared radiation
Temperature
difference
Movement
Infrared radiation
Detection area Detection zone
In the detection zone, above, the sen-
sor tur ns on when a temperature
change exceeds the regulated amount.
feature 02.2.12 1:58 PM Page 18
2. Operating principle of Motion Sensor
MA Motion Sensor
These sensors detect the human body via the area reflection system.
Photo detector
Near Far
Human
body
– ▲ L+ ▲ L
Light-emitting
element
Detection distance L
Receiver lens
Projector lens
The sensor sends out a ray of light toward the human body, then uses the reflect-
ed light to measure the distance and deter mine whether there is a person within
a given distance of the sensor. If the sensor decides that there is a person within
the given distance, it sets an output non-contact switch to ON.
The triple-angle distance measurement configuration makes it difficult
to be affected by the color (reflection ratio) of the detection object.
This is the high-precision distance measurement method used in the
auto-focus systems in cameras.
The system is configured so that the received light spot comes almost the center
of the photo detectors when if a human body is located at the detection distance L.
The system deter mines whether the body is farther (L+ ▲L) or closer (L ▲L) by
the position of the received light spot.
Reflected beam
Light beam
Output
Non-contact switch
feature 02.2.12 1:58 PM Page 19
FEATURES
3
Passive infrared type MP Motion Sensor ‘ ’
Motion detecting sensor area type MP Motion Sensor ‘ ’
Proprietary high-precision molding technology is usedto integrate
16
short -focal-point lenses with five different optical axes in
order to reduce
size.
Highly sensitive quad element
U-shaped slits are formed around the four light -receiving units to
improve heat insulation, reduce element size and increase
element
sensitivity.
MIPTEC (Microscope Integrated Processing Technology) application device
Employing MIPTEC which has our proprietary MID (Molded
Interconnect Device) technology, the element, IC and chip
component is mounted in a MID at high density and contained in a
TO5 metal package (9.8 mm x 9 mm dia.).
Single-chip IC with built-in amplifier and comparator
Proprietary circuit technology which is different from ordinary FET
technology is used to create a single-chip IC which contains both an
amplifier circuit and a comparator circuit.
Small multi-lens
Structural diagram Our motion sensor is based on know-how developed
over many years, including our proprietar y technolo-
gy for lenses, detector elements, ICs and mounting.
FEATURE
1The world’s smallest with a built-in amplifier
Easy to incor porate into small devices.
All it takes is a bright
idea to increase the
range of application.
Here is the secret to the world’s
smallest sensor
About 1/10 the vol-
ume and 1/5 the
lens surface area
of conventional
motion detecting
sensors.
<Conventional type>
Actual size Actual size Standard type
Lens surface area Ø9.5mm
Mounting hole Ø9.8mm
14.5mm
feature 02.2.12 1:58 PM Page 20
3. Features of MP Motion Sensor ‘’
On
Off
FEATURE
2
Circuit design is easy because the amp and comparator are built in (except for analog output type).
The digital output enables connec-
tion directly to microcomputers.
MP motion sensor block diagram
Vdd
Output
Single-chip
IC
TO5 metal package
(9.8mm × 9mm .386inch × .354inch dia.)
Gnd
Stabilized
power
supply
Amplifier
circuit Comparator
output
circuit
Quad type
PIR element
Multi lens
Optical filter
Infrared
radiation
Key point
To achieve the same scheme as the ‘ ’
MP Motion Sensor, a sensor element, amplifier
and comparator are required.
The output from the sensor element is extremely
weak in the passive infrared scheme, thus the signal
must be amplified and conver ted to an ON/OFF sig-
nal with a comparator circuit before output.
is not just a sensor element; it has a built in
amp and comparator. Be sure to carefully check the func-
tions, etc., when comparing with other company's products.
Lens Amplifier circuit Comparator
circuit
Sensor
element
Signal Output
Weak signal Strong signal
On
Off
FEATURE
3Noise withstanding capability
Shielding is increased because the
amp circuit is built into the TO5
metal package.
Comparison table of noise with-
standing capability
Key point
To achieve the same scheme as the NaPiOn MP
Motion Sensor, a counter measure for radiant noise
in general is necessary. If noise enters the circuit
between the sensor element and the amplifier, the
noise will be amplified along with the weak signal,
resulting in detection errors.
For this reason, shielding is necessar y between
the sensor element and the amplifier.
Shielding is taken care of in the ‘ ’
(TO5 metal package includes shielding)
Regular same-system sensors require separate noise countermeasures to be taken.
Lens Amplifier circuit Comparator
circuit
Sensor
element
Lens Amplifier circuit Comparator
circuit
Sensor
element
Shield
Signal
Signal
Output
Output
Weak signal Strong signal
Noise Detection error
TO5 metal package
Distance at which motion
sensor is not affected by
cellular phone noise
Min. 1 to 2cm .394 to .787
inch
MP Motion Sensor
Min. 1 to 2m 3.281 to
6.562ft
Conventional type
(Block diagram for a typical passive infrared sensor)
feature 02.2.12 1:58 PM Page 21
FEATURE
4Dual lens colors (white and black) are provided
<Conventional type> <MP Motion Sensor ‘’>
This provides greater flexibility in
equipment design.
FEATURE
5Four detection performance types are available
YDetection zoneDetection area
1
3.281
(Max. 7.42m)
(Max. 24.344ft)
(Max. 5.66m)
(Max. 18.570ft)
X
2
6.562 2
6.562
3
9.843 3
9.843
4m
13.123ft 4m
13.123ft
1
3.281
1
3.281
1
3.281
2
6.562
2
6.562
3m
9.843ft
3m
9.843ft
X
5m
16.404ft
5m
16.404ft
2.5m
8.202ft
2.5m
8.202ft
50°
50°
0°
TOP VIEW
Y
5m
16.404ft
5m
16.404ft
2.5m
8.202ft
2.5m
8.202ft
41°
41°
0°
SIDE VIEW
1. Standard type
Detection Performance
X-Y cross section
A wide horizontal detection range has been achieved for situations where
the sensor will be attached to a wall and used to detect passersby.
Notes:
1) Detection is also possible with the sensor attached to the ceiling.
2) In situations where the customer wants use a sensor attached to a wall to
detect slight movements, recommend the slight movement detection type.
Mounting hole
ø9.8mm. 386 inch
feature 02.2.12 1:58 PM Page 22
YDetection zone
X
–0.5
–1.640
–0.5
–1.640
–1
–3.281
–1.5
–4.921
–2
–6.562
0.5
1.640
0.5
1.640
1
3.281
1.5
4.921
2
6.562
–1
–3.281 1
3.281
–1.5
–4.921 1.5
4.921
–2
–6.562 2
6.562
–2.5m
–8.202ft
2.5m
8.202ft
–2.5m
–8.202ft
2.5m
8.202ft
(Max. 5m dia.)
(Max. 16.404ft dia.)
1m
3.281ft
1.5
4.921
2
6.562
2.5m
8.202ft
–1.5
–4.921
–2
–6.562
–2.5m
–8.202ft
1
3.281
0.5
1.640
0
–0.5
–1.640
–1
–3.281
2m
6.562ft
Y
46°
46°
0°
1m 2m
3.281ft 6.562ft
2. Slight motion detection type
X-Y cross section
Detection zone
Detection area
3. Features of MP Motion Sensor ‘’
For ceiling attachment, this sen-
sor is designed to detect slight
movements in conference rooms
and other rooms where people
gather. Detection is also possi-
ble attached to a wall.
4
13.123
6
19.685 4
13.123
Y
X
6m
19.685ft
6m
19.685ft
(Max.15.9m 52.165ft)
4
13.123
4
13.123
2
6.562
2
6.562
8
26.247
10m
32.808ft 6
19.685 8
26.247 10m
32.808ft
2
6.562 2
6.562
(Max.12.3m 40.354ft)
TOP VIEW
55°
5m
16.404ft
10m
32.808ft
5m
16.404ft
10m
32.808ft X
SIDE VIEW
46.5°
Y
5m
16.404ft
10m
32.808ft
5m
16.404ft
10m
32.808ft
4. 10m detection type X-Y cross section
Detection zone
Y
X
1m
3.281ft
1m
3.281ft
(Max. 2m)
(Max. 6.562ft)
(Max. 1.4m)
(Max. 4.593ft)
0.5
1.640
0.5
1.640
0.5
1.640 0.5
1.640
1m
3.281ft 1m
3.281ft
TOP VIEW
2m
5.562ft
0
1.25
4.101
2.5m
8.202ft
2.5
8.202
1.25
4.101
5m
16.404ft
X
19°
19°
0°
2.5
8.202 5m
16.404ft
SIDE VIEW
Y
11°
11°
0°
2m
5.562ft
0
1.25
4.101
2.5m
8.202ft
2.5
8.202
1.25
4.101
5m
16.404ft
2.5
8.202 5m
16.404ft
3. Spot type X-Y cross section
Ideal for detecting people in small areas, such as for voice
guidance or entr y light control.
Note: Recommended when you want to further restr ict the
detection range.
Ideal for detecting people
over larger areas than the
standard type.
feature 02.2.12 1:58 PM Page 23
Note on the detection zone:
As indicated at right, the detection zone
has polarity. If two objects enter the zone in
the + and – directions at the same time,
the signals from each may cancel each
other and make detection impossible in the
vicinity of the maximum detection distance.
Object
Detection zone
1. Setting the sensor so it will not
detect people who are far away
Application methods
Sensor
Detection area
Sensor
Detection area
2. For detection in only a limited area
Use slit
Use tube
FEATURE
6
Analog output type also available that allows sensitivity adjustment
Designed for situations in which the surrounding environment has an adverse effect
on perfor mance (when you want to reduce the difference between the background
temperature of summer and winter, or eliminate the effect of var ying air conditioner
output). Being able to check the degree of influence using an analog value, the user
can set the threshold whereby such influence can be ignored.
feature 02.2.12 1:58 PM Page 24
FEATURE
1
Because of the distance-measured type, accurate sensing is possible
with little influence caused by reflection ratio of the detection object.
With commonly used light intensity type sensors (which detect objects by the amount
of reflected light), perfor mance is greatly affected by the reflectivity of the detected
object.
However, since the MA motion sensor does not detect based on the amount of reflect-
ed rays, it features the ability not to be easily influenced by the reflection ratio because
detection is based on the position of the receiving spot in the receive element.
Area reflective type MA Motion Sensor
3. Features of MA Motion Sensor
Light volume detecting type
Since detection is deter mined by inten-
sity, the influence of reflection ration is
likely.
Reflected beam
(Reflectivity:
Approx. 90%)
Stable detection
Ex.) white paper
Reflected beam
(Reflectivity:
Approx. 3% to 40%,
average 5%)
Unstable
detection
Ex.) hair
MA motion sensor
The system detects whether an object is
present by the position of the received
light spot on a photo detector, so it is not
greatly affected by reflectivity.
Reflected beam
(Reflectivity:
Approx. 90%)
Stable detection
Ex.) white paper
Reflected beam
(Reflectivity:
Approx. 3% to 40%,
average 5%)
Received
light spot
Received
light spot
Stable detection
Ex.) hair
A non-spherical lens is used both for projector and receiver.
Using a non-spherical lens in this sensor, the projector lens can produce the incident
light efficiently from the light-emitting element. In addition, the receiver lens can effi-
ciently gather the entering light into the photo detector. As a result, an accurate dis-
tance measurement can be made even if the detected object has low reflectivity.
Diagram of the receiving
light path of a spherical lens Diagram of the receiving light
path of an a non-spherical lens
The sensor operates with high precision, even if
the reflectivity of the detected object is low.
Non-spherical lens!
Efficient projection and
condensation is possible.
feature 02.2.12 1:58 PM Page 25
FEATURE
2A built-in oscillation circuit type (internal trigger) and an
external trigg ering type are available.
Built-in oscillation circuit type
Simply connect a DC power source and the sensor is ready for use.
External triggering type
Sensors can be connected sequentially.
Input each exter nal tr igger signal in sequence to
prevent reciprocal interference.
Motion
sensor
Output ON
OFF Relay, etc.
Oscillation
circuit Power circuit Latch circuit
Just connect a DC
power source and
you’re ready to go!
Average current
consumption
Built-in oscillation
circuit type
5480µA
External tr igger
160.5µA
Batter y life
(4 alkaline batteries) Approx. 30 days Approx. 1000 days
(2.8 years)
Can be driven by a battery
Establishing an inter val between external tr igger signals reduces current con-
sumption in the sensor.
Example of usage
Automatic flushing of men’s ur inal
Rate of use of urinal: 30 minutes per day
Trigger period: 2 seconds per trigger
Sequential connection is OK!
FEATURE
3Can be used with a number of different power supply
voltages
1) The 5 V DC type (4.5 to 6.5 V DC)
2) The free-ranging power type (6.5 to 27 V DC)
They suppor t the DC power supplies of electronic products and equipment in general.
4.5 V DC
to
27 V DC
feature 02.2.12 1:58 PM Page 26
3. Features of MA Motion Sensor
FEATURE
4Ultra-compact size , suitable for built-in applications
Motion sensors are designed to be built into equipment.We have
achieved an ultra-compact size, so these sensors will not affect equip-
ment size or interfere with design.
A series of three types to suit the detected object
Three types “Short type”, “Middle type” and “Long type” are available.
Naturally, the shor ter the distance, the more compact the type.
Also, the rated detection distance can be changed at the factor y to meet spe-
cific customer needs.
Type
Shor t type
Middle type
Long type
Rated detection distance (Range of variation)
Change possible in 1 cm increments between a 5 cm and 10 cm range.
Change possible in 10 cm increments between a 20 cm and 80 cm range.
Change possible in 10 cm increments between a 30 cm and 200 cm range.
Short type
Detects hands
Intentionally uses a hand-based
non-contact switch
19.5 11
20
Middle type
23.1 14
32
Long type
29.7 20
46
10 cm (3.937 inch)
Used as an ON/OFF switch for
when a person stands in front of
equipment.
80 cm (31.496 inch)
Set-up on the ceiling of a room,
and used to detect whether a
person is in the room or seated.
200 cm (78.74 inch)
As shown below, the detection area of this sensor is the area up to
the rated detection distance excluding the non-sensitive zone .
Active zone (detection zone)
Infrared radiation
Does not
return to receiver lens
Reflected light
(returns to receiver lens)
Non-sensitive zone
Several millimeters to
several centimeters
Projector
lens
Receiver
lens
Rated detection
distance
feature 02.2.12 1:58 PM Page 27
Factor y automation sensors are used under conditions which are closely con-
trolled to suit the application. MA motion sensors, however, are built into equip-
ment, so they may sometimes be used at locations which are exposed to sunlight
(however, the direct sunlight to sensor is impossible).
Sensor for FA application
FEATURE
5These sensors are highly resistant to disturbing ambient
light, and can be used worry-free in bright spaces
Closely controlled environment
MA Motion Sensor
Sensor may be used at a bright location
which are exposed to sunlight
Usable ambient brightness (ambient light immunity) is one of the impor-
tant points to be checked when using sensors in bright locations.
Nor mally, for factor y automation
applications the usable ambient
brightness is 3,000 to 10,000 lx.
MA motion sensors can operate at
30,000 lx, i.e, the brightness near a
window on a summer day.
The detection result takes the for m of ON/OFF output (open collector transistor out-
put), thus a reference circuit is not necessar y and circuit design is easy.
FEATURE
6Circuit design is easy
Confor ms with EMC directive for CE certification vital for use in Europe.
FEATURE
7All models with built-in oscillation circuit type meet CE
mark standards
• Built-in oscillation circuit type: measur ing period 8 ms/time (typical)
• Exter nal trigger ing type: measur ing period 5 ms/time (typical)
FEATURE
8High speed detection is possible
feature 02.2.12 1:58 PM Page 28
1. How to use
The MP Motion Sensor has three pins. Connections are as follows:
(Digital output type)
How to use and cautions for use
4
MP Motion Sensor ‘ ’
Vdd
GND
Out
+
−
+
Load
Sensor
Vdd: Input power source (DC)
GND: GND
Out: Output (Comparator)
ON
OFF
ON
OFF
Note: Circuit stability time: Max. 30 sec.
While the circuitr y is stabilizing after the power is turned on, the sensor output is not fixed in
the “on” state or “off” state.This is tr ue regardless of whether or not the sensor has detected
anything.
For this reason, please combine with a device that contains a function for preventing output
during this time.
Note: The spot and 10m detection types are subject to change without notice due to improvements
in product perfor mance, characteristics and dimensions. Please contact us with any inquiries
you may have.
Power supply
Detection state
Sensor output
ON
OFF
Detect
Not
detect
ON
OFF
Circuit stability
time
1.Wiring diagram
2.Timing char t
feature 02.2.12 1:58 PM Page 29
(Analog output type)
Microcomputer
and
A/D converter,
etc.
Sensor
Vdd
GND
OUT
+
RL
Iout : MAX. 50 µA
Note: Circuit stability time: Max. 45 sec.
While the circuitr y is stabilizing after the power is turned on, the sensor output is not fixed in
the “on” state or “off” state.This is tr ue regardless of whether or not the sensor has detected
anything.
For this reason, please combine with a device that contains a function for preventing output
during this time.
1.Wiring diagram
2.Timing char t (analog output type)
Detect
Not detect
Vdd
GND
Vdd
GND Voff V h V n
V l
Power supply
Detection state
Output waveform
V out
(Comparator
decision output)
Circuit stability time
human body
movement Threshould voltage 1
(comparator)
Threshould voltage 2
(comparator)
feature 02.2.12 1:58 PM Page 30
The MA Motion Sensor has four pins. Standard connections are as follows:
(Built-in oscillation circuit type)
1
2
3
4
1.
2.
3.
4.
+
4. How to use and cautions for use
MA Motion Sensor
Load
1. Output
2. GND
3. Power source
4. Not used
The output is open collector transistor output.
Output voltage (Load voltage): 30 V
Output flow current (Max. output current): 100 mA
Sensor
Output Tr
Circuit for a common source voltage for the sensor and the load
1
2
3
4
1.
2.
3.
4.
+
+
Load
1. Output
2. GND
3. Power source
4. Not used
Sensor
Output Tr
Circuit for separating the sensor source voltage and the load source
voltage
ON
Power supply
Output transistor
(open collector)
Notes: 1. Circuit stability time : Max. 12 ms.
2. During the time taken for the circuit to stabilize after the power is turned on,
Notes: 2. the ON/OFF status of the output transistor is not determined by whether the sensor is
Notes: 2. in the detection status or non-detection status.
OFF
OFF
Non detection status Detection status Non detection status
Circuit
stability
time
ON
1.Wiring diagram
2.Timing char t
feature 02.2.12 1:58 PM Page 31
(Exter nal trigger type)
External trigger input
4
(Note 2)
(Note 1)
(Note 3)
2
GND
1
Power source 3
Output
33 µF or
more
1.Wiring diagram
2.Timing char t
Notes: 1. Output transistor is an open collector.
Detection status: Output transistor ON (connected to GND)
Detection status: Output transistor OFF (open status)
2. Exter nal trigger input is as follows:
High level: Open
Low level: GND (Max. 0.8 V)
Be absolutely sure not to apply high level voltage.
3. For the trigger type, in order to maintain a heavy power noise function, be sure to provide a
capacitor (at least 33 µF) at the sensor power input ter minal.This will stabilize the power sup-
ply voltage.
Notes: 1. Circuit stability time : Max. 12 ms.
2. Dur ing the time taken for the circuit to
stabilize after the power is turned on,
the ON/OFF status of the output tran-
sistor is not determined by whether
the sensor is in the detection status or
non-detection status.
Note: 1.The sensor recognizes that an exter-
nal trigger has been input at the VTH
→VTL edge of the exter nal trigger.
OFF
OFF
VTH
VTL
VTH
VTL
Tw
Tr : Max. 5ms
Tt : Min. 5ms
ON
ON
Power supply
External trigger
Output transistor
(open collector)
External trigger
Output
Non detection
status Non detection
status
Detection
status
Change
(ON
→ OFF or
OFF → ON)
Circuit
stability
time
feature 02.2.12 1:58 PM Page 32
1.What is a Motion Sensor?
2. Cautions for use
1. Checkpoints relating to principle of operation
MP motion sensors are passive infrared sensors which
detect changes in the infrared rays.They may fail to
detect successfully if a heat source other than a human
being is detected or if there are no temperature changes
in or movement of a heat source. Care must generally be
taken in the following cases.The perfor mance and relia-
bility of the sensors must be checked out under condi-
tions of actual use.
<1>Cases where a heat source other than a human being
is detected.
1) When a small animal enters the detection range.
2) When the sensor is directly exposed to sunlight, a
vehicle’s headlights, an incandescent light or some
other source of far infrared rays.
3) When the temperature inside the detection range has
changed suddenly due to the entr y of cold or warm
air from an air-conditioning or heating unit, water
vapor from a humidifier, etc.
<2> Cases where it is difficult to detect the heat source
1) When an object made of glass, acrylic or other sub-
ject which far infrared rays have difficult passing
through is located between the sensor and what is to
be detected.
2) When the heat source inside the detection range
hardly moves or when it moves at high speed; for
details on the movement speed, refer to the section
on the perfor mance ratings.
2. Other handling cautions
1) Be careful not to allow dust or dir t to accumulate on
the lens as this will adversely affect the detection sen-
sitivity.
2) The lens is made of a soft material (polyethylene).
Avoid applying a load or impact since this will defor m
or scratch the lens, making proper operation impossi-
ble and causing a deterioration in its perfor mance.
3) The sensor may be damaged if it is exposed to static
with a voltage exceeding ±200V. Therefore, do not
touch its terminals directly, and exercise adequate care
in the handling of the sensor.
4) When the leads are to be soldered, solder them by
hand for less than 3 seconds at a temperature of less
than 350°C 662°F at the tip of the soldering iron. Avoid
using a solder bath since this will causing a deteriora-
tion in the sensor’s performance.
5) Do not attempt to clean the sensor. Cleaning fluid may
enter inside the lens area causing a deterioration in
performance.
6) When using the sensors with cables, it is recommend-
ed that cables which are shielded and as short as pos-
sible be used in order to safeguard against the effects
of noise.
Cautions for MP Motion Sensor ‘ ’
1. Ambient operating conditions
1) Avoid using the sensor in environments containing
excessive amounts of steam, dust, corrosive gas, or
where organic solvents are present.
2) When the sensor is used in noisy environments, con-
nect a capacitor (minimum 33 µF) across its power
input terminals.
2. Wiring
1) Check all wiring before applying power. Incorrect wiring
may damage the inter nal circuit (in par ticular, check
that the connection to the power supply is not
reversed.)
2) Avoid excessive removing and replacing of the connec-
tor.
3. Detector surface (Optical surface)
1) Keep the detector surface clean. Excessive dust or dir t
on the detector surface will deteriorate the sensing
performance.
2) Do not allow condensation or freezing to occur on the
surface of the sensor. If condensation or freezing does
occur at low temperatures, the sensor may not detect
objects correctly.
3) This product is designed to detect the existence of
human body.The sensor will not detect objects consist-
ing of a low reflective mater ial (e.g., an object coated
with black r ubber, etc.) or of a highly reflective material
(e.g., mirror, glass, coated paper, etc.)
4) The front surface of the lens and case are made of
polycarbonate resin and can withstand water, alcohol,
oils, salts and weak acids. Other fluids such as alka-
lines, aromatic hydrocarbons and halogenated hydro-
carbons may melt or swell the lens and case, please
do not have such fluids touch the lens and case.
5) To protect the inner circuit, wir ing should be max. 3 m
9.843 ft..
4. Recommended installation procedure
Install the MA motion sensor so that it is orientated cor-
rectly in relation to the pass directions of the target
objects as shown in the figure below.
Cautions for MA Motion Sensor
Pass directions
Object
Object
Object
❈ → stands for pass direction of the target object.
feature 02.2.12 1:58 PM Page 33
SAFETY PRECAUTIONS
Head the following precautions to prevent injury or accidents.
• Do not use these sensors under any circumstances in
which the range of their ratings, environment conditions
or other specifications are exceeded. Using the sen-
sors in any way which causes their specifications to be
exceeded may generate abnormally high levels of heat,
emit smoke, etc., resulting in damage to the circuitr y
and possibly causing an accident.
• Before connecting a connector, check the pin layout by
referring to the connector wir ing diagram, specifications
diagram, etc., and make sure that the connector is con-
nected properly.Take note that mistakes made in con-
nection may cause unforeseen problems in operation,
generate abnormally high levels of heat, emit smoke,
etc., resulting in damage to the circuitr y.
• Do not use any motion sensor which has been disas-
sembled or remodeled.
• The sensor has two malfunction modes: short circuit
and open.
The shor t circuit mode may be triggered by an increase
in temperature. In order to ensure safety, especially in
impor tant applications, please consider suitable safety
measures such as a protective circuit or protection
device.
– Various safety machines and devices
– Traffic signal lights
– Crime and disaster prevention devices
– Control devices and other devices that concern the
safety of trains and vehicles.
– Other impor tant devices
1. Ambient operating conditions
1) Temperature: Refer to the absolute maximum ratings
for the temperature of each individual sensor.
2) Humidity: 15% to 85% RH (No freezing nor condensa-
tion at low temperature)
3) Atmospheric pressure: 86 to 106 kPa
4) The sensors do not have a water-proof or dust-proof
construction. Depending on the ambient operating con-
ditions, some means of providing protection from water
and dust and preventing the for mation of ice and con-
densation must be provided prior to using the sensors.
5) Take care to avoid exposing the sensors to heat, vibra-
tion or impact since malfunctioning may result.
2. Concerning external surge voltages
Since the internal circuitry may be destroyed if an exter-
nal surge voltages is supplied, provide an element which
will absorb the surges.The levels of the voltage surges
which the sensor can withstand is given below.
MA motion sensors: 500 V (±1.2 x 50µs unipolar full-
wave voltage)
MP motion sensors: Within the supply voltage given in
the absolute maximum ratings.
3. Concerning power supply-superimposed noise
Use a regulated power supply as the power supply.
Otherwise, power supply-superimposed noise may cause
the sensors to malfunction.The levels of noise which the
sensor can withstand is given below.
MA motion sensors: ±200 V (50ms, 1µs wide square
waves)
MP motion sensors: ±20 V (50ms, 1µs wide square
waves)
4. Drop damage
If the sensor is dropped, damage can occur resulting in
incorrect operation. If dropped, be sure to do a visual
check of the exter ior for noticeable damage and check
the operation characteristics for faulty operation.
5. Concerning the circuit sides
Since the circuit sides given in this catalog are not pro-
tected in terms of circuit design, check out the perfor-
mance and reliability of the circuits prior to using the sen-
sors.
6. The technical information contained in this catalog is
used to explain general operation and use of the
products. By this usage, neither our company nor
any third par ty grants the right to use intellectual
property copyrights or any other copyrights.
Notes for Motion Sensor
feature 02.2.12 1:58 PM Page 34
Sensor
1) Digital output type 2) Analog output type
Vdd
lout : MAX. 100 µA
GND
Out
Load
Vdd
GND
Out
RL
I out : Max. 50 µA
Sensor
Microcomputer
and A/D
converter, etc.
How should the sensor be wired?
Q3 Q7
Q5
Q6
See here as well!
Q
1
A1. Pin functions are as follows:
Vdd Power source (+)
GND Power source (-)
Out Output ter minal
2. Connect the pins as follows:
Connect the (+) ter minal of the power source to Vdd.
Connect the (-) ter minal of the power source to GND.
Passive infrared type MP Motion Sensor ‘’
Circuitry
Can the circuit stabilization time (wait
time) be shor tened?
See here as well!
Q
2
ANo.
The circuit stabilization time is the time required for the inter nal circuit to
stabilize after the power is tur ned on. Dur ing this time correct detection can-
not take place and the output is unstable.
ON
OFF
ON
OFF
Power supply
Detection state
Sensor output
Circuit stability time
MAX. 30 sec.
Right here!
Please wait!
Q&A_layout 02.2.12 2:08 PM Page 36
Can the AC load be tur ned on and off
directly?
See here as well!
Q
3
AThis is not possible with our standard product.
Use a relay or SSR at the output of the MA Motion Sensor to tur n the AC
load on or off.
Please refer to the following circuits when a timer is required in your design.
MP Motion Sensor ‘ ’Questions and Answers Circuitr y
Circuit example
Refer to the following circuits.
Vdd
GND
Out
+
-
lout : MAX. 100µA
+
−
1. For mechanical relay drive
Vdd
GND
Out
lout : MAX. 100µA
2. For SSR drive
Sensor
Load
Sensor
Load
Mechanical
Relay
Q&A_layout 02.2.12 2:08 PM Page 37
Vdd 100K
100K
100K
Out
GND
Vdd Out
GND
Vdd Out
GND
I would like to use multiple sensors. Is it possible
to design a common circuit for the sensors?
Q1
See here as well!
Q
6
AYes. Be sure to connect the
sensors in parallel.
Refer to the circuit at r ight.
MP Motion Sensor
MP Motion Sensor
MP Motion Sensor
Signal processing circuit
(microprocessor, etc.)
Connect us in
parallel!
I would like to use an AC power source
for the input power supply.
See here as well!
Q
4
AThis is not possible with our
standard product.
If an AC power source is necessar y,
please consult us. Please consult us!
Are there any products with an operating
voltage of 24 V DC or 12 V DC?
Q1
See here as well!
Q
5
AWe do not have any standard products with these operating
voltages.
Use a regulator or other circuit to
transfor m the voltage to 5 V DC. 5V DC regulator 5V DC
GND
6 to 24
V DC
GND
Circuit example
Q&A_layout 02.2.12 2:08 PM Page 38
How do I set the output time (timer)?
See here as well!
Q
7
ARecent devices come with built-in microprocessors. Use the
microprocessor's timer function to set the output time.
If the device doesn't have a built-in microprocessor, refer to the following
timer circuit.
MP Motion Sensor ‘ ’Questions and Answers Circuitr y
Note 1) Each timer IC manufacturer requires different values for the resistance (R) and
capacitance (C) used for the time setting. Check with the manufacturer for
these values before designing the circuit.
Note 2) This is the reference circuit which drives the MP motion sensor. Please note
that we bear no responsibility for any damages or loss arising from the use of
this circuit. Install a noise filter for applications requir ing enhanced detection
reliability and noise withstanding capability.
Differences in the specifications of electronic components to which the units
are connected sometimes affect their correct operation; please check the units‘
perfor mance and reliability for each application.
Input voltage
Timer IC Timer time = R×C
The transistor
turns on when
the sensor
detects some-
thing
Connection to
motion sensor
Select a transis-
tor to match the
relay
Vdd
GND
Out
(5VDC)
0.1µ
47µ
0.1µ
10µ
10µ
10K
GND
Relay
47K
0.1µ
0.1µ
0.1µ
14
8
13
C
R
74HC
123etc.15
9
10
11
1
3 2 16
5V
REG ++
+
Q&A_layout 02.2.12 2:08 PM Page 39
Is light for motion detection constantly
emitted from the lens?
See here as well!
Q
8
ANo.
The ‘ ’ MP Motion Sensor is a passive infrared sensor, which
means that it does not emit infrared radiation to detect motion. Instead, the
sensor operates by receiving infrared radiation emitted from the moving
body.This is why it is called a "passive type" sensor.
Performance
Detection!
10 µm infrared
radiation
The detection distance in the catalogue is
given as a "maximum".Will the sensor
detect anything beyond this distance?
Q10 Q36
Q11 Q42
See here as well!
Q
9
AIt may.
The sensor is rated for "detection or no detection" based on specific input
conditions.The meaning of "Standard type, maximum 5 m" and "Slight
motion type, maximum 2 m" in the catalogue is "the maximum distance at
which detection is guaranteed".
The sensor detects motion based on the difference between the ambient
temperature and the surface temperature of the person that entered the
detection area, and the conditions of each will give rise to small variations
in detection perfor mance.
Infrared radiation
Temperature
difference
Movement
Infrared radiation
Q&A_layout 02.2.12 2:08 PM Page 40
The detection of the standard type is
5 m. Can the detection distance be short-
ened?
Q9 Q39
Q11 Q42
Q36
See here as well!
Q
10
ANo.
The best way to limit the detection distance is to change the angle of
attachment of the sensor so that it points toward an obstacle such as the
ground, a wall, or the ceiling.
MP Motion Sensor ‘ ’Questions and Answers Perfor mance
Setting the sensor so it will not detect
people who are far away
Sensor
Detection area
Sensor
Detection area
For detection in only a limited area
Use slit
Use tube
Can the sensitivity be adjusted?
Q9 Q36
Q10 Q42
See here as well!
Q
11
AThe sensor does not include a sensitivity adjustment func-
tion.
What is
the
detection
area?
Are there
ambient
temperature
changes?
Q&A_layout 02.2.12 2:08 PM Page 41
Is perfor mance affected by differences in
operating voltage?
See here as well!
Q
12
ADetection performance is not affected, but the output volt-
age will change .
How long is the inter val (response time)
between a person moving and detection
of the movement?
See here as well!
Q
13
AApproximately 0.5 seconds.
<Timing chart>
Standard type
Human body
Reference voltage
Reference voltage
Amplifier output
Sensor output
(comparator output)
Element output
(Open collector)
Q&A_layout 02.2.12 2:08 PM Page 42
What is the difference between the detec-
tion area and the detection zone?
See here as well!
Q
14
A•Detection zone
The zone that people are detected in. In the sensor area there are four
infrared elements.
A lens of one of these elements projects and this creates four detection
zones.
•Detection area
The detection area treats the four detection zones as a group and is the
number of lenses of the projected detection zones collection.
•For standard type sensor
Detection area diagram for standard-type sensor
The number of pattern types
( ) of detection
zones is also the number of lens
shape types.
MP Motion Sensor ‘ ’Questions and Answers Perfor mance
Four passive infrared elements
One optical axis
Four Detection zone
4✕ Number of lenses ➝Number of detection zones
X-Y cross-section of standard type
The detection area projected onto a flat surface 2.5 m from the sensor.
The standard type has a detec-
tion area consisting of 4 detec-
tion zones ✕16 single focusing
lenses = 64 detection zones,
with five types of detection zone
patterns.
Q&A_layout 02.2.12 2:08 PM Page 43
For digital output type, if a person keeps mov-
ing in the detection area and the detection
state persists, what kind of output appears?
Q16
See here as well!
Q
15
AON/OFF is repeatedly output.
When the detection state persists, the characteristics of the passive infrared
element cause it to repeatedly output an analog wavefor m as shown in the
time char t below.The output is amplified by the amplifier circuit, and when it
exceeds a certain reference level (reference voltage), detection results and
ON is output.When the reference level is not exceeded, OFF is output.
Timing chart
What is the duration of output from the
sensor after one detection?
Q15
See here as well!
Q
16
AAt least 10 ms.
The output from the passive infrared element will var y depending on the
speed of the detected object and the difference between the temperature of
the object and the ambient temperature.
The output from the passive infrared element is amplified by the amplifier. If
the amplified output exceeds the reference voltage, a person is regarded as
being detected and ON is output. For this reason the duration of one output
is not fixed; however, it lasts at least 10 ms due to circuit characteristics.
Human body
Reference voltage
Reference voltage
Amplifier output
Sensor output
(comparator output)
Element output
(Open collector)
Timing chart
Human body
Reference voltage
Reference voltage
Amplifier output
Sensor output
(comparator output)
Element output
(Open collector)
Q&A_layout 02.2.12 2:08 PM Page 44
How much time elapses before OFF is
output when the person stops moving or
leaves the detection area?
Q15
Q16
See here as well!
Q
17
AFrom 10 ms to several seconds.
Why doesn't the sensor have a timer
circuit for setting the output time (timer
time)?
Q7
See here as well!
Q
18
ARecently almost all devices have a built-in microprocessor, and we decided
that the timer circuit included in previous sensors (area type Fur umai sen-
sor) is not necessar y because the microprocessor's timer function can be
used.
If you need a timer circuit, refer to Q7.
(mm)
6000°K3000°K
300°K
(w/cm)2
10 4
10 2
1
10-2
10
0.5 1.0 2.0 5.0 10 20
-4
What infrared wavelengths can be detect-
ed?
See here as well!
Q
19
AAs indicated below, the sensor uses a filter that transmits 5µm or longer
wavelengths.Therefore, long wavelengths equal to or greater than 5µm
can be detected.
MP Motion Sensor ‘ ’Questions and Answers Perfor mance
Wavelength characteristics
Visible light
Radiant
exitance
Near
infrared
light
Intermediate
infrared
light Far
infrared light
(Direct sunlight)
Wavelength (µm)
The human
body emits
10µm!
(Incandescent lamp)
Filter characteristics
(Human body)
The human
body emits
10 µm wave-
lengths!
Q&A_layout 02.2.12 2:08 PM Page 45
When you say "a temperature difference
between the object and the background of 4°C
or higher", what does "background" mean?
Q21 Q44
Q37 Q45
Q43
See here as well!
Q
20
AThe background is the temperature of the environment surrounding (but not
including) the object to be detected, such as the ground, walls, and ceiling.
When a person enters the sensor's detection area, the quantity of infrared
radiation incident on the sensor changes by an amount equivalent to the
temperature difference between the person and the background. The MP
motion sensor ‘NaPiOn’ detects a person by detecting this change in inci-
dent infrared radiation. In other words, the sensor operates in response to
the difference in temperature between the human body, a source of heat,
and the background such as the floor and walls.
Detection
Background
0
10
20
30
40
50
60
0 5 10 15 20 25 30 35 40 45 50 55
Thigh
Chest
Hair
Face
Background
Reference date Wear ing long-sleeve work clothes
Ambient temperature (°C)
Body temperature (°C)
Note: Temperature difference with respect
to background
Q&A_layout 02.2.12 2:08 PM Page 46
Does the sensor respond only to people?
Q20 Q44
Q24 Q45
Q43 Q46
See here as well!
Q
21
ANo.
The sensor may also react to changes in air current caused by animals,
sudden temperature changes, heaters, and air conditioners, etc.
For more details, refer to the cautions in the catalogue.
MP Motion Sensor ‘ ’Questions and Answers Perfor mance
Q&A_layout 02.2.12 2:08 PM Page 47
Should I assume that detection is not pos-
sible in direct light?
Q20
See here as well!
Q
30
AThe maximum ambient operating illumination of the sensor is 30,000 Lx.
Even in bright sunlight, and even if light shines directly on the sensor or on
the object of detection, the sensor will operate correctly as long as the illu-
mination does not exceed 30,000 Lx.
However, if an inver ter light is directly within the detection area of the sen-
sor (plus or minus several degrees), the sensor will not operate correctly.
This is because the sensor cannot distinguish between light emitted from
the sensor and light from the inver ter light.
The sensor will operate correctly in the direction of
the sun as long as its optical axis does not point
directly toward the sun. The field of detection of the
sensor is plus or minus several degrees, so there
will be no problem if the sensor’s optical axis is
shifted 15° away from the sun.
GND
LED
–
+–
+
+
–+
–
LED
6V DC
+
*R
GND
Is there an easy way to verify sensor
operation?
Q21
See here as well!
Q
31
AConnect the sensor
as shown at right to
have an LED illumi-
nate when the sen-
sor detects a person
or object.
* Use a resistor value appropriate
for the current that is to flow
through the LED.
Please shift the
optical axis!
Resistor
MA
Motion
Sensor
Output
Power source
MA
Motion
Sensor
Output
Power source
MA Motion Sensor Questions and Answers Using Sensors
Q&A_layout 02.2.12 2:08 PM Page 77
Can the sensor be used if the front is half
covered?
Q9
Q27
See here as well!
Q
28
AThe area reflective type MA Motion Sensor is a distance measurement type
sensor and thus it tends not to be affected by the intensity of light reflected
from the detected object. For this rea-
son, the sensor can detect if its front
face is half covered; however, perfor-
mance is noticeable impaired.
Before using the sensor, verify
detection performance using
the object you with to detect.
Is it okay to wipe the sensor with ethanol?
See here as well!
Q
29
AYes.
The front face of the lenses and the case are made of polycarbonite.
In general, this material is resistant to water, alcohol, oil, salt, and weak acids.
Alcohol: methanol, ethanol, etc.
Oils and fats: turbine oil, grease, etc.
Do not use the following chemicals:
Gasoline, thinner, ammonia, caustic soda, toluene
Q&A_layout 02.2.12 2:08 PM Page 76
Max. 20mm
What points are impor tant when installing
a cover (filter) on the front of the sensor?
Q9
Q23
Q28
See here as well!
Q
27
ARequired cover (front filter) specifications
Use a cover that transmits infrared light (wavelength: 900 nm).
Material: Acr ylic, glass, or similar material
Surface condition: To prevent light dispersion, the surface roughness
should be 1µm R-Max (ground glass is not acceptable)
Color: As long as the material optically transmits infrared light
(wavelength: 900 nm), any visible color is acceptable. (You
must be able to see through the plate.)
Thickness: Use a plate with a maximum thickness of 2 mm.
(If the cover is too thick, dir t on the cover may accidentally
trigger detection.)
How to install the cover
Install the cover so that it is parallel to the front face of the sensor.
Covers of non-uniform thickness
As shown below, the detection distance can be lengthened by placing a
cover or filter of non-uniform thickness in front of the sensor to produce a
prism effect.
Light projector
and receptor
<Example>
Cover Sensor
If separated by more than 20 mm, the cover may be detected.
(For par t No.“AMB1***”, do not separate by more than 5mm).
Connector
Emitting element
Receptor element
Lens Cover (filter) Reflective plate
Extended detection
distance
Lens
MA Motion Sensor Questions and Answers Using Sensors
Q&A_layout 02.2.12 2:08 PM Page 75
What points are impor tant when installing
the motion sensor?
Q5
Q8
See here as well!
Q
26
AThe MA Motion Sensor is designed primarily for indoor use .
The number of detection times and the presence of an object
Noise from exter nal sources and other factors can cause the unex-
pected output of a detection signal. For applications requir ing greater
detection reliability, we recommend that you design the circuit so that
the device activates only after several detection signals are output, not
just one.
How to install the sensor
<Recommended installation direction>
<Recommended installation height>
The infrared beam emitted from the sensor spreads over a cer tain
angle with respect to the front of the sensor. If you install the sensor
so that the beam travels parallel to the installation surface (such as
a wall, floor or ceiling), we recommend that you raise the sensor
slightly off of the surface (about 50 mm). (Refer to Q8)
Front cover
Wiring length
To minimize the effects of noise, keep the wiring as shor t as possible.
If the sensor is to be used in a high-noise environment, add capacitors
to the sensor power input and the output.
Effects other than the detection area
Operating environment
Performance of power source
There is a
lot to check,
but I’m
counting on
you!
Pass directions
Object
Object
Object
❈ → stands for pass direction of the target object.
Install the sensor so that it points
in the direction shown at left with
respect to the direction of entr y of
the object.
Q&A_layout 02.2.12 2:08 PM Page 74
Is outdoor use possible?
Q9
Q25
Q27
See here as well!
Q
24
ABasically, you should not.
This sensor is designed for indoor use (for common indoor electronic
devices). If you need to use a sensor outdoors, take measures to water-
proof the sensor and protect it
from dust, condensation, and
freezing.There are many causes
of temperature changes out-
doors, and detection errors may
result.
Using Sensors
Please
protect me
Dust
protection Waterproofing
Condensation/
freezing
What should be done about water proof-
ing?
Q24
Q27
See here as well!
Q
25
AThe sensor itself is not waterproof.When
incor porating the sensor into the device,
design the structure to be water proof.
However, please use a mater ial in front of
the sensor such as glass or acr ylic that
allows the transmission of infrared rays. I’m not
waterproof!
MA Motion Sensor Questions and Answers Using Sensors
Q&A_layout 02.2.12 2:08 PM Page 73
What is the non-sensitivity zone?
Q14
Q15
Q27
See here as well!
Q
23
AThis is the area extending from several millimetres in front
of the sensor to several tens of millimetres where the sen-
sor does not operate .
The sensor detects the presence of an object based on the position of entr y
in the receiver element of the light reflected off the object. If the object is in
immediate proximity to the sensor, the light emitted from the sensor does
not retur n to the receiver element and the object is not detected. As the
sensor will be incor porated into a device, it is frequently used with a front
cover, and the non-sensitivity zone keeps the cover from being detected
and helps the sensor operate normally.
This is
the non-sensitivity zone!
Q&A_layout 02.2.12 2:08 PM Page 72
What is open collector output?
See here as well!
Q
22
AA transistor is used in the output.When the sensor detects
a person or object, the transistor turns on and current flows
from the collector to the emitter, outputting a signal.
When open collector output is used, the current flow
and voltage applied to the load connected to the
output can be set as desired.This enables wide
range of use in sequencers and other devices.
Terminology
Non-detection state
(Transistor is OFF)
GND
Schematic of output circuit
Sensor
Base Collector
Emitter
Output
IB]0
GND
Sensor Output
Detection state
(Transistor is ON)
GND
( )
Sensor
Current
flows
IB: Base current
IC: Collector current
Output
IBIC
GND
Sensor Output
MA Motion Sensor Questions and Answers Ter minology
Image of output circuit
Turns on by
the detection
signal.
Q&A_layout 02.2.12 2:08 PM Page 71
What is your policy with respect to aging
deterioration?
Q18
See here as well!
Q
19
AWe estimate the life of the sensor based on testing in the operating environ-
ment of the components having the greatest effect on operation.
In the case of the MA Motion Sensor, the light emitting diode has the most
effect on operation. We estimate the life of the diode based on accelerated
reliability tests (THB tests, etc.).The tests indicate that the sensor should
operate without problem for 10 years or more, a result that past products
have held up.
How br ight is 30,000 Lx?
Q30
See here as well!
Q
20
AThe brightness
inside a window on a
clear summer day.
Assuming batter y power will be used,
what is the life of the batter ies?
See here as well!
Q
21
AConditions
Typical current consumption over one month of use.
•3240 mA H/month typ. (Built-in oscillation circuit type)
•106 mA H/month typ. (Exter nal tr iggering type on 1 sec/time of tr igger period)
<Comparative table of battery lives>
If you need a low current consumption battery, please consult us.
1.5
0.4
1.2
1.2
47.2
11.3
38.0
37.7
Life(months) of
external trigger-
ing type
Life(months) of
built-in oscillation
circuit type
Capacity
5000 mAh
1200 mAh
4030 mAh
4000 mAh
Voltage
3 V (x 2 batter ies)
6 V (x 1 batter y)
1.5 V (x 4 batter ies)
1.2 V (x 5 batter ies)
Size(one battery)
ø26x50
ø19.5x36x2
ø34.2x61.5
ø34x61
Model number
BR-CT2P
BR-P2P
LR20(PG)
N-4000D
Manufacturer
Matsushita
Battery
Industrial
Sanyo Electric
Battery type
Lithium
Alkaline
Nickel cadmium
Q&A_layout 02.2.12 2:08 PM Page 70
ON
OFF
ON
OFF
How long does it take (response time) for the
detection signal to be output after a person
or object enters the detection area?
See here as well!
Q
16
AA maximum of 9 ms.
The built-in oscillation circuit type is set to measure at a maximum period of
9 ms, and thus the response time is a maximum of 9 ms.
However, the average is about 8 ms.
Object (person)
Output trigger
(Transistor output)
9ms, maximum
ON
OFF
ON
OFF
If the detection state persists, what hap-
pens to the output?
See here as well!
Q
17
AThe output remains in the ON state .
Object (person)
Does the sensor have good weather
resistance?
Q19
Q24
See here as well!
Q
18
AThe front window of the MA Motion Sensor is made with polycarbonite.This
plastic has par ticular ly superb weather resistance even compared to other
plastics.
Output trigger
(Transistor output)
8ms, average
MA Motion Sensor Questions and Answers Perfor mance
Q&A_layout 02.2.12 2:08 PM Page 69
What are the characteristics of the detec-
tion area?
Q13
Q14
Q23
See here as well!
Q
15
AThe characteristics are shown in the following diagrams.
20
0
10
20
30
40
50
60
70
80
90
100
Y
10 0 10 20 X
Reading the graph
Detection width W (mm)
Detection area within
dotted lines
When an object covers
the entire detection area,
detection occurs.
Detection area within
solid lines
When object enters par t
of detection area, detec-
tion occurs.
Object
Detection
area within
dotted lines
Detection
area within
solid lines
Note: If only enters par t
of detection area, detec-
tion does not occur.
Detection area of nomi-
nal detection distance of
8 cm
Detection distance L (mm)
Example of the detection
area of the 10 cm type with
a nominal detection dis-
tance of 8 cm (model
#AMB140*08)
Object
20
0
10
20
30
40
50
60
70
80
90
100
Y
10 0 10 20 X
Y
X
Y
10 cm
9 cm
8 cm
200×200mm
( 90%)
7 cm
6 cm
5 cm
Short type (AMB14*****)
Detection width W (mm)
Reflective plate 200 x
200 mm
(Reflectance: 90%)
Nominal detection area
10 cm detection area
Detection distance L (mm)
Reflective
plate
0
250
500
750
1000
1250
1500
1750
2000
Y
X
40 30 20 10 0 10 20 30 40
Y
X
200 cm
150 cm
100 cm
50 cm
500×500mm
( 90%)
Long type (AMB34*****)
Detection width W (mm)
Reflective plate 500
x 500 mm
(Reflectance: 90%)
Nominal detection area
200 cm detection area
Detection distance L (mm)
Reflective
plate
40 30 20 10 0 10 20 30 40
0
100
200
300
400
500
600
700
800
Y
X
X
Y
80 cm
70 cm
60 cm
50 cm
40 cm
30 cm
20 cm
200×200mm
( 90%)
Middle type (AMB24*****)
Detection width W (mm)
Reflective plate 200
x 200 mm
(Reflectance: 90%)
Nominal detection area
80 cm detection area
Detection distance L (mm)
Reflective
plate
Q&A_layout 02.2.12 2:08 PM Page 68
Can detection take place when the object
is closer than the rated detection dis-
tance?
Q13
Q15
Q23
See here as well!
Q
14
AYes.
The sensor emits an infrared beam, measures the distance to the person
(object) by means of the light reflected back, and deter mines whether or not
the object is within the detection distance.
However, with the exception of the non-sensitive zone in the immediate
proximity of the sensor where light reflected off the object cannot retur n to
the receiver lens, the sensor detects objects anywhere within the rated
detection distance.
Active zone (detection zone)
Infrared radiation
Does not return to receiver
lens Reflected light
(returns to receiver lens)
Non-sensitive zone
Several millimeters to
several centimeters
Projector
lens
Receiver
lens
Rated detection
distance
MA Motion Sensor Questions and Answers Perfor mance
Q&A_layout 02.2.12 2:08 PM Page 67
Does temperature affect the detection dis-
tance?
Q13
See here as well!
Q
12
AYes.
The area reflective type MA Motion Sensor detects an object based on the
position of the infrared beam that reflects off of the object and returns to the
sensor. When the temperature changes, differences in the coefficients of lin-
ear expansion of the sensor components can cause the distance between
the lenses, and the distance between the projector and receiver elements,
to expand or contract.This changes the position of the retur ning infrared
beam and thus the detection distance.
The amount of the change is several percent over the operating tempera-
ture range of the sensor (–25°C to 75°C).
Is it possible to select a new setting for
the detection distance after receiving the
sensor?
Q12
Q14
Q15
See here as well!
Q
13
ANo, you cannot set the detection distance once the sensor
has been shipped from the factory.
The rated detection distance is determined by the lens position adjustment.
Since this procedure is done at the factory before shipping you cannot set
this afterwards once the sensor has been shipped. Please select a sensor
according to your application with the appropriate detection distance from
the products provided below.
AMB ****
Rated detection distance
Note:
Not kept in stock.
Please consult us.
02
03
04
05
06
07
08 (No display on middle type)
09
10 (No display on short type)
11
12
13
14
15
16
17
18
19
20 (No display on long type)
Area reflective type MA Motion Sensor
Long type
-
30 cm
40 cm
50 cm
60 cm
70 cm
80 cm
90 cm
100 cm
110 cm
120 cm
130 cm
140 cm
150 cm
160 cm
170 cm
180 cm
190 cm
200 cm
Middle type
20 cm
30 cm
40 cm
50 cm
60 cm
70 cm
80 cm
-
-
-
-
-
-
-
-
-
-
-
-
Short type
-
-
-
5 cm
6 cm
7 cm
8 cm
9 cm
10 cm*
11 cm (Note)
12 cm (Note)
13 cm (Note)
14 cm (Note)
15 cm (Note)
-
-
-
-
Type
Model number
Q&A_layout 02.2.12 2:08 PM Page 66
Does dir t on the front cover (filter) affect
performance?
Q24
Q27
Q28
See here as well!
Q
9
ADir t has almost no effect.
The MA Motion Sensor takes the detected differ-
ence in distance between an object with 90%
reflectance and an object with 18% reflectance as
“distance measurement error”. Even if the reflected
light intensity decreases to 1/5 its original value
due to dir t, the distance measurement error will still
be under this value.
No problem!
What is the output wavelength of the sen-
sor’s infrared LED?
Q11
See here as well!
Q
10
AThe output reaches a momentar y (max. 10 µs) power of 180 mW, and the
wavelength is approximately 900 nm.This is about the same as a typical
remote control.
Does a remote control ever cause detec-
tion errors?
See here as well!
Q
11
AThe sensor uses the same type of light emitting element as a remote con-
trol, and as such detection errors are possible. However, to produce a
detection error the following conditions must be met:
* The remote control must be within the field of
detection of the sensor.
* The timing of remote control operation must coin-
cide with the inter val of several tens of microsec-
onds that the MA Motion Sensor accepts light.
* Sufficient power is required.
Due to these conditions, random operation of a remote control pointed
toward the MA Motion Sensor will result in erroneous detection only once
ever y several tens of times.
Careful,
a detection
error may
occur!
MA Motion Sensor Questions and Answers Perfor mance
Q&A_layout 02.2.12 2:08 PM Page 65
Why is a detection signal output even
though no object is in the detection area?
Q7 Q26
Q9 Q27
Q11 Q28
Q12
See here as well!
Q
8
A
2. Is the sensor detecting the surface on which it is
installed?
The sensor emits infrared light in the for m of a spot beam that gradually
expands.The beam projector element is in the bottom part of the sensor,
and thus if the sensor is installed on a surface parallel to the beam (wall,
floor or ceiling), the beam may hit the surface and reflect back into the sen-
sor.We recommend that you raise the sensor slightly off of the installation
surface (approx. 50mm).
Detection error Sensor
Lens Projected spot beam
Receiver element
Projector element
Recommended installation
Raise approximately 50mm
Surface parallel to infrared beam
(wall, floor, ceiling, etc.)
MA Motion Sensor
Be aware of
reflective
surfaces!
Up and
down
directions
1. Is there anything in front of the MA Motion Sensor with a
reflective surface such as a mirror, metallic plate, or mar-
ble?
Just as light reflects in a mirror, the infrared light emitted by the sensor will
reflect off of an object with a reflective surface and retur n to the sensor.
If this occurs, change the angle of attachment of the sensor slightly (no
more than several degrees) as shown below.
Q&A_layout 02.2.12 2:08 PM Page 64
Is detection perfor mance affected by the
type of clothing wor n?
Q8
See here as well!
Q
7
AThe effect of clothing is negligible .
Light intensity type sensors, which have been in common use, detect an
object based on the amount of reflected light and for this reason tend to be
affected by the type of clothing worn.The MA Motion Sensor is a distance
measurement type sensor, and variations in the detected distance due to
differences in clothing mater ial or color are negligible.
Stable detection is possible of objects having a reflectance
ranging from 90% to 18%.
The reflectance of clothing and body par ts is indicated below.
Performance
White paper
Detectable objects
* Objects with a high reflectance
White cloth, white shir ts, white spor t shir ts
* Inter mediate objects
Objects with a colored patter n
* Objects with a low reflectance
Black for mal clothing, fluffy or furr y materials such
as black fur, lustrous mater ials such as black lame
Objects that cannot
be detected
Reference:
Reflectance of human skin: Approximately 40%
Reflectance of hair : 3% to 40% (average 5%)
Mirrors, objects with metallic coating, mirror-like
objects in which you can see your reflection (black
car body, metal plates)
Hair
Reflectivity: 3% to 40%
(average 5%)
Reflectivity:
Approximately 90%
Detection
MA Motion Sensor Questions and Answers Perfor mance
Q&A_layout 02.2.12 2:08 PM Page 63
GND
2
4
51
Timer IC
µPC 1555
NJN 555
2
R1
R2 6
7
84
3
0.1
1
3
+
µF
I need to design pulse generating circuit
using the exter nal tr igger type. Could you
show an example dr ive circuit?
Q7
See here as well!
Q
6
AExample drive circuit
Notes: 1.The output transistor has an open collector str ucture.
Detection status: Output transistor ON (connected to GND)
Non-detection status: Output transistor OFF (open state)
Notes: 2.The status of the external tr igger input is as follows:
Open at the high level
GND (less than 0.8V) at the low level
Under no circumstances must a high-level voltage be applied.
Notes:
This is a sample circuit for dr iving an MA Motion Sensor. Noise protection was not
taken into consideration.
To increase reliability and protect against noise, add a noise filter to the input. In
addition, add a circuit that accepts the output in synchronization with the star t sig-
nal and issues a detection signal when the same output is repeated several times
in succession.
Please note that we bear no responsibility for any damages or loss arising from the
use of this circuit.
Power source
External
trigger input
(Note 2) Output
(Note 1)
Q&A_layout 02.2.12 2:08 PM Page 62
Can a power source voltage other than
5 V be used?
See here as well!
Q
4
AYes.
Two types are available:
1) 5V DC type (4.5 V to 6.5 V DC)
2) Free power source type (6.5 V to 27 V DC)
These two types provide compatibility with
most common electronic devices.
Free power
source type
6.5 V to 27V
5 V DC type
4.5 V to 6.5 V
I would like to extend the wir ing to 3
meters. Is this possible?
Q26
See here as well!
Q
5
AIn order to protect the inter nal circuit and reduce the influence of noise from
the surrounding environment keep the wir ing as shor t as possible within
three meters. If inverters, motors, switching devices, or other devices are in
close proximity, special caution is needed. If the sensor is going to be used
in an environment with considerable noise, add a capacitor to the power
input pin of the sensor.
Keep the
wiring as short
as possible!
Noise
Noise
Noise
MA Motion Sensor Questions and Answers Circuitr y
Q&A_layout 02.2.12 2:08 PM Page 61
Note 1) Each timer IC manufacturer requires different values for the resistance (R) and
capacitance (C) used for the time setting. Check with the manufacturer for
these values before designing the circuit.
Note 2) This circuit is an example circuit for driving the MA Motion Sensor. Please note
that we bear no responsibility for any damages or loss arising from the use of
this circuit.To increase reliability and noise tolerance, add noise filter. Note that
specification changes in the electronic components may prevent the circuit
from operating correctly. Be sure to verify performance and reliability when
designing the circuit.
What kind of circuit should be used to set
the time (timer time) of the output signal?
Q2
See here as well!
Q
3
ARefer to the following circuit.
Example of a relay drive circuit using a timer circuit
Input voltage
Timer IC Timer time = R×C
The transistor
turns on when
the sensor
detects some-
thing
Connection to
motion sensor
Select a transis-
tor to match the
relay
Vdd
GND
Out
(5VDC)
0.1µ
47µ
0.1µ
10µ
10µ
10K
GND
Relay
47K
0.1µ
0.1µ
0.1µ
14
8
13
C
R
74HC
123etc.15
9
10
11
1
3 2 16
5V
REG ++
+
Q&A_layout 02.2.12 2:08 PM Page 60
I would like to use two sensors simultane-
ously to expand the detection area. Will
the sensors interfere with each other?
See here as well!
Q
1
AYes. In order to avoid reciprocal interference when emissions occur simulta-
neously, install the MA motion sensors (built-in oscillation circuit type) with
the following spacing, or use an exter nal trigger type for which operation
can be adjusted by the trigger signal input.
Area reflective type MA Motion Sensor
Circuitry
GND
GND
++ –
–
++
How should I design the circuit for output
using a relay?
Q3
See here as well!
Q
2
ARefer to the following circuits
Product number
Standard detection
distance
Distance between
sensors
AMB1***
Shor t type
5 cm
AMB2***
Middle type
10 cm
AMB3***
Long type
20 cm
1. Mechanical relay drive
2. For SSR drive
Load
Mechanical
Relay
SSR
MA Motion Sensor Output
Power supply
Load
MA Motion Sensor Output
Power supply
Leave some
space between
us!
Q&A_layout 02.2.12 2:08 PM Page 59
Is detection perfor mance affected by
clothing?
Q20 Q43
Q21 Q44
See here as well!
Q
46
APerformance is slightly affected.
The MP Motion Sensor detects the difference between the ambient temper-
ature and the surface temperature of a person that enters the sensor detec-
tion area; thus detection performance is slightly affected by the condition of
the person and the ambient temperature.The human body emits more
energy in the summer when people tend to wear clothing that exposes
more of the body than in the winter, when
only the face and hands may be exposed.
However, actual detection performance is
better in the winter because the lower
ambient temperature has a greater effect
on perfor mance than the presence of more
clothing. In general, changes in the ambi-
ent temperature are of greater concern
than clothing.
Yes,
there is a
difference!
Vdd
GND
Out
LED
LED
5V DC
(680Ω)
1
100kΩ
FET
FET
Vdd
GND
Out
+
−
+
−
+
−
+
−
Is there an easy way to verify sensor
operation?
Q1
Q26
See here as well!
Q
47
AConnect the sensor as shown here to have an LED illumi-
nate when the sensor detects a person.
*1 Use a resistor
value appropriate
for the current that
is to flow through
the LED.
Sensor
Sensor
Resistor
Resistor
Q&A_layout 02.2.12 2:08 PM Page 58
Does the ambient temperature affect
detection sensitivity?
Q20 Q23
Q21 Q46
Q22
See here as well!
Q
43
AYes.
Seasonal changes in the ambient temperature change the sensitivity of the
sensor. Detection becomes more difficult in the summer because there is
less difference between the ambient temperature and the surface of the
human body. In winter, the reverse is true.
Does detection take place when the ambient temperature
is higher than the human body? How about when the
ambient temperature is the same as the human body?
Q20 Q22
Q21 Q23
See here as well!
Q
44
AYes.
The sensor operates by detecting temperature changes caused by the
motion of a body of a different temperature than the ambient temperature.
Therefore, detection takes place when the ambient temperature is higher
than the human body. Detection is also possible even when the ambient
temperature is the same as the human body because not all par ts of the
body are the same temperature and the differences are detected when the
body moves.
Does sunlight affect perfor mance?
Q20
Q21
Q33
See here as well!
Q
45
AYes.
When the sun suddenly shines or stops
shining on the sensor, temperature
changes occur.The sensor detects these
changes and may output a detection sig-
nal. Be sure to install the sensor in a
location not exposed to sunlight.
MP Motion Sensor ‘ ’Questions and Answers Using Sensors
Q&A_layout 02.2.12 2:08 PM Page 57
YDetection zone
A B
CE
D
1
3.281
(Max. 7.42m)
(Max. 24.344ft)
(Max. 5.66m)
(Max. 18.570ft)
X
2
6.562 2
6.562
3
9.843 3
9.843
4m
13.123ft 4m
13.123ft
1
3.281
1
3.281
1
3.281
2
6.562
2
6.562
3m
9.843ft
3m
9.843ft
I would like to detect small animals like
mice.What is the smallest object that can
be detected?
Q40
See here as well!
Q
41
AThe minimum detection size is that of one multi-lens (a circle several mil-
limetres in diameter) when the object is in immediate proximity to the MP
Motion Sensor.
Detection takes place when the object blocks par t of the detection area and
a temperature difference occurs. As the distance from the sensor increases,
the detection area grows, and a larger object is necessary to create the
temperature difference needed for detection.
The minimum detection size depends on the distance from the object to the
sensor and the magnitude of the temperature difference. Use the sizes indi-
cated in the following x-y cross-section diagram as a reference.
Will objects behind transparent panes
such as glass or acr ylic be detected?
Q10
Q11
Q36
See here as well!
Q
42
ANo.
The sensor can only detect wavelengths
that are 5 µm or longer.
Common materials such as glass can only
transmit near infrared wavelengths up to 2
µm, thus a person moving behind a glass
window will not be detected.
X
5m
16.404ft
5m
16.404ft
2.5m
8.202ft
2.5m
8.202ft
50°
50°
0°
TOP VIEW
Y
5m
16.404ft
5m
16.404ft
2.5m
8.202ft
2.5m
8.202ft
41°
41°
0°
SIDE VIEW
Standard type
X-Y cross section
Detection area Detection zone
The sensor turns on (activates) when a temperature change
occurs in one or more of the above detection zones.
Detection area
Transparent glass
Q&A_layout 02.2.12 2:08 PM Page 56
Can a sleeping person be detected?
Q32
Q39
See here as well!
Q
38
AA person who remains completely still cannot be detected.
However, detection is possible in the following instances:
(Use the slight motion type)
*Someone who frequently tur ns over in their sleep.
*Someone sleeping in bed who
occasionally moves his or her feet
or hands.
*The frequency of movement can
be used to detect whether the
person is awake or asleep.
(To detect someone who is lying completely still, use an area reflective type MA
motion sensor.)
MP Motion Sensor ‘ ’Questions and Answers Using Sensors
I need to detect both moving people and
people standing still.
Q32
Q38
See here as well!
Q
39
AUse the high-sensitivity slight motion type .
Detection of a moving person is easy (standard function).
Although it is not possible to detect someone who is standing
completely still, people almost never remain completely still.
Even the slightest movement can be detected by the sensor.
The slight motion type is designed for the pur pose of detecting
slight movements of the hands and head.
Is detection possible when the distance
between the person and the sensor is
almost zero?
Q10
Q41
See here as well!
Q
40
AYes.
If a person enters the detection area, detection occurs.
However, if the person is ver y close to the sensor, the person
may cover the detection area and prevent the occurrence of
temperature changes. In this case, detection will not occur.
Do not
cover the
detection
area!
Q&A_layout 02.2.12 2:08 PM Page 55
How can I change the detection area?
Q9 Q11
Q10 Q42
See here as well!
Q
36
AThe detection area can be changed by changing the angle of attachment of
the sensor, and by placing a slit in front of the sensor that limits the area
detected. If you find it difficult to calculate the desired detection area, please
consult us.
Setting the sensor so it will not detect people who are far away
For detection in only a limited area
Sensor
Detection area
Sensor
Detection area
Use slit
Use tube
Can the sensor be installed on a moving
body?
Q20
See here as well!
Q
37
ANo.
The MP Motion Sensor is nor mally installed in a static location.When an
object enters the detection area, the sensor detects changes in the amount
of infrared radiation in the detection area. If the sensor were to move, it
might mistake changes in the wall and floor temperature for a moving object
of a different temperature and activate.
Q&A_layout 02.2.12 2:08 PM Page 54
MP Motion Sensor ‘ ’Questions and Answers Using Sensors
How should the sensor be water proofed?
Q13 Q42
Q33 Q45
Q35
See here as well!
Q
34
AThe sensor itself is not waterproof.The following is an
example of how it can be waterproofed.
General waterproofing example
Cover the entire sensor with a box, and use a polyethylene sheet for the front
face.The thickness of the polyethylene sheet should be no more than 0.5
mm. If any thicker, the sensitivity of the sensor will drop by more than half.
Polyethylene sheet
Caution:
Sensitivity will fall. Be sure to
verify that the sensor performs
as desired in the actual condi-
tions of use.
Does condensation ever for m inside the
metal package of the sensor?
Q33
Q34
See here as well!
Q
35
AIn general, no. However, be sure to perform performance and
reliability tests in the operating environment before com-
mencing design.
Dr y air is sealed into the metal can package of the sensor, thus there is in
general almost no moisture inside the metal can. However, if the sensor is
to be used outdoors, take sufficient measures for waterproofing and protec-
tion against dust, condensation and freezing.
0
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2
λ = 9 µm
Thickness (mm)
Transmittance (%)
Reference: infrared transmittance vs. polyethylene sheet thickness
Q&A_layout 02.2.12 2:08 PM Page 53
What is the difference between the stan-
dard type and the slight motion type?
Q38
Q39
See here as well!
Q
32
AIn general the standard type is for detection of large-scale motion, such as
a person walking.The slight motion type is for small-scale movement such
as slight movements of the hands or head of a person sitting.
When you need unifor m detection sensitivity over a wide, far-reaching area,
use the standard type.When you need to detect people that are sitting and
barely move such as in a conference room or office, or people that move
only slightly, use the slight motion type.
Using Sensors
Standard type Slight motion
type
Is outdoor use possible?
Q24 Q35
Q34 Q45
See here as well!
Q
33
A
Waterproofing
Freezing
Condensation
Dust
protection
Basically, you should not.
MP motion sensors are designed for indoor use (for common indoor elec-
tronic devices). If you need to use a sensor outdoors, take measures to
waterproof the sensor and protect it from dust, condensation, and freezing.
There are many causes of temperature changes outdoors, and detection
errors may result.
A typical outdoor application is entr y
light control. In this case the sensor is
nor mally in close proximity to a wall
and roof which help to limit tempera-
ture changes, and operation takes
place at night when the temperature
remains fair ly unifor m.
Q&A_layout 02.2.12 2:08 PM Page 52
What is a comparator?
See here as well!
Q
30
AThe amount of infrared radiation emitted from the human body is ver y
small, and the signal cannot be processed by the circuit as is. For this rea-
son, the signal is amplified by the amplifier circuit.The amplified signal must
then be compared to the reference level. If the amplified circuit is greater
than the reference level, a person is considered to have entered the detec-
tion area and a signal is output. The circuit that makes this comparison
is called a comparator.
MP Motion Sensor ‘ ’Questions and Answers Ter minology
<Timing chart> Standard type
Right here!
Amplifier
circuit
Comparison
circuit
Output
OK!
When does current consumption standby
occur?
See here as well!
Q
31
AWhen the time required for stabilization has elapsed and the sensor is
ready for detection, two states are possible depending the condition of the
detection area:
1. A person has entered the detection area (detection output ON)
2. Nobody is in the detection area (detection output OFF)
Number 2 above is the standby state. (Number 1 is the detection state.)
The difference between the standby state and the detection state is that the
output circuit is off in the standby state, and therefore current consumption
is less than in the detection state.
Standby Detection
I’m a comparator.
Human body
Reference voltage
Reference voltage
Amplifier output
comparator output
Element output
(Open collector)
Q&A_layout 02.2.12 2:08 PM Page 51
What is a passive infrared element?
See here as well!
Q
28
AThis is a sensor element whose surface is pre-charged. The charge
changes due to infrared radiation from the object detected, and the change
is output as a voltage change.
Terminology
It’s in here!
Lens
Passive
infrared
element
9mm
What is a TO5 metal package?
See here as well!
Q
29
ACap
Stem
Chip
Lead
As shown at right, a TO5 package con-
sists of a metal semiconductor chip
mounting 9 mm in diameter, a
doshshaped component called a stem
that holds the exter nal leads, and a metal
cap that covers the semiconductor chip.
Q&A_layout 02.2.12 2:08 PM Page 50
What is the tolerance to exter nal
surges and noise?
See here as well!
Q
25
ANoise (noise components) from the ambient environment
and power supply will affect operation.
Use the sensor in an environment with as little noise as possible.
Reference:
Distance at which cellular telephone noise does not affect sensor : 1 to 2 cm or greater
What is your policy with respect to
age deter ioration?
See here as well!
Q
26
AWe estimate the age deterioration in the operating environ-
ment of the sensor based on testing of the components hav-
ing the greatest effect on operation.
In the case of the NpPiOn sensor, the passive infrared elements have the
most effect on operation. We estimate the age deterioration of the sensor
based on accelerated reliability tests (THB tests, etc.).The test results indi-
cate that the sensor should operate without problem at nor mal room tem-
perature and humidity for 10 years or more.
Assuming batter y power will be used,
what is the life of the batter ies?
See here as well!
Q
27
A*Duration of batter y use (per month): 24 hours per day, 30 days per month
*Sensor detection frequency: 4000 times per month (5 to 6 times per hour)
Detection output time: 1 minute per detection
*Using a 5000 mAh lithium batter y: 3.2 years
*Using a 1200 mAh lithium batter y: 9.3 months
MP Motion Sensor ‘ ’Questions and Answers Perfor mance
Current consumption
Standby
170µA (typ.)
During detection
270µA (typ.)
Output (when at 100µA)
Q&A_layout 02.2.12 2:08 PM Page 49
The maximum operating ambient temper-
ature is given as 60°C.The sensor cannot
be used at a higher temperature?
Q23
Q43
Q44
See here as well!
Q
22
ANo, the standard product cannot
be used at a higher temperature . The operating ambient
temperature range is
–20°C to +60°C.
What will happen if a sensor is used out-
side of the operating ambient temperature
range?
Q22
Q43
Q44
See here as well!
Q
23
AA detection signal may be output even though nothing is
detected.
Or, a detection signal may not be output even though a person is
detected. (Performance cannot be guaranteed.) The operating ambient
temperature range is –20°C to +60°C.
What will happen if dir t or dust gathers on
the sensor surface?
Q33
See here as well!
Q
24
ADust has hardly any effect on sen-
sor operation.
However, a large piece of debr is that covers
par t of the lens surface will interfere with
operation.
No problem with dust
or small debris!
Q&A_layout 02.2.12 2:08 PM Page 48
Reliability Data of MA Motion Sensor
Conditions of measurement: temperature = 25 ± 5˚C, humidity = 40 to 70%, air pressure = 86 to 106 kPa
Tested
characteristic Test conditions Pass/fail criteria Test result
Heat resistance Temperature: 85 ± 3˚C
Test time: 96 hours
After test: Change in detection
distance perfor mance is no more
than ±30% of initial value. Visual
inspection reveals no structural
abnormalities.
Number of pieces
tested: n = 6
Defective pieces: c = 0
Passed
Resistance to
thermal shock
Low temperature: -30 ± 3˚C
High temperature: 85 ± 3˚C
Time of one cycle: 30 min-
utes each for high and low
temperatures
Number of cycles: 100
After test: Change in detection
distance perfor mance is no more
than ±30% of initial value. Visual
inspection reveals no structural
abnormalities.
Number of pieces
tested: n = 6
Defective pieces: c = 0
Passed
Low temperature
resistance Temperature: -30 ± 3˚C
Test time: 96 hours
After test: Change in detection
distance perfor mance is no more
than ±30% of initial value. Visual
inspection reveals no structural
abnormalities.
Number of pieces
tested: n = 6
Defective pieces: c = 0
Passed
Operating
temperature
range
Low temperature limit:
-25 ± 3˚C
High temperature limit:
75 ± 3˚C
During test: no errors, operation
failures, or damage.
Change in detection distance
perfor mance is no more than
±20% of the value at 25˚C.
Number of pieces
tested: n = 6
Defective pieces: c = 0
Passed
Temperature/
humidity cycle
Temperature: -10 ± 3˚C
to 65 ± 3˚C
Humidity: 90%
Time of one cycle: 24
hours
Number of cycles: 10
After test: Change in detection
distance perfor mance is no more
than ±30% of initial value. Visual
inspection reveals no structural
abnormalities.
Number of pieces
tested: n = 6
Defective pieces: c = 0
Passed
Vibration
resistance
Vibration frequency: 10 to 55 Hz
Amplitude: 1.5 mm
Direction of application: 3 direc-
tions
Application time: 30 minutes each
directions
After test: Change in detection
distance perfor mance is no more
than ±30% of initial value. Visual
inspection reveals no structural
abnormalities.
Number of pieces
tested: n = 6
Defective pieces: c = 0
Passed
Shock resistance
Shock value: 100 G
Direction of application:
3 directions
Application times: 3
times each
After test: Change in detection
distance perfor mance is no more
than ±30% of initial value. Visual
inspection reveals no structural
abnormalities.
Number of pieces
tested: n = 6
Defective pieces: c = 0
Passed
Output
characteristics
Power source voltage:
Nominal power source
voltage
Output load voltage: 30
V DC
Leakage current: 3 µA or less
(Measured with micro-ammeter
when output Tr is OFF)
Number of pieces
tested: n = 3
Defective pieces: c = 0
Passed
Dropping
tolerance
(No Packing)
Height: 80 cm
Direction of drop: 6 directions
Number of times: Once each
direction
Drop surface: vinyl chloride
tile
After test: No destr uction.
Visual inspection reveals no
structural abnor malities.
Number of pieces
tested: n = 6
Defective pieces: c = 0
Passed
Q&A_layout 02.2.12 2:08 PM Page 79