SiBE12-908
Main Functions
Function and Control
28
1.9
2-AREA INTELLIGENT EYE
The following functions can be performed by a human motion sensor (INTELLIGENT EYE).
1. Reduces the capacity when there is no human in the room in order to save electricity.
(energy saving operation)
2. Divides the room into plural areas and detects existence of humans in each area.
Shifts the airflow direction to the area having no human automatically to avoid direct airflow
on humans.
Processing
1. Detection method by INTELLIGENT EYE
This sensor detects human motion by receiving infrared rays and displays the pulse wave
output.
A microcomputer in an indoor unit carries out a sampling every 20 milliseconds and if it
detects 10 cycles of the wave in 1.0 second in total (corresponding to 20 msec.× 10 = 200
msec.), and when the ON signal continues for 3 seconds, it judges that human is in the room
as the motion signal is ON.
INTELLIGENT EYE sensor is divided into 2 areas and detects humans in each area.
(R2821)
sampling (20msec)
Sensor output
Detection signal
from the sensor
(Human motion)
Human detection
signal
High
Low
ON
OFF
ON
OFF
(Condition of 10 times or more output)
(Continue 3 sec.)
If the detection signal (ON) continues 3 sec. or more,
it judges humans exist.
If the sensor detects the outputs 10 times/sec.
or more, it judges humans exist.
1sec
(R3854)
Image of 2-AREA INTELLIGENT EYE
Wall
Top view
Indoor unit
· A microcomputer judges human existence in
area A and B by the sensor signal from each
Area B
Area A