AMN12111 Datasheet, PDF (1/67 Pages) Panasonic Semiconductor – What is a Motion Sensor

1 _{What is a Motion Sensor?}
The motion sensor is an infrared
human detection sensor, which, as
opposed to factory automation sen-
sors that are used with factory
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.
Types of motion sensor
Motion sensors are divided into two types.
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.
Sensor
1. As this sensor
detects temperature
differences, it is well
Infrared radiation
suited to detecting
the motion of people
by their body tem-
Temperature
difference
perature.
Infrared radiation _{2. Wide sensing area.}
3. Detection
distance cannot
Movement
be set.
The world’s smallest with a built-in amplifier
MP Motion Sensor ‘
’
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
A compact distance-type sensor that is not easily
influenced by reflection ratio.
MA Motion Sensor
Short type
(5 cm to 10 cm)
Long type
(Horizontal
installation)
(30 cm to
200 cm)
Middle type
(20 cm to 80 cm)
Long type
(Vertical
installation)
(30 cm to
200 cm)