2-Area Intelligent Eye - Daikin CTXU25G2V1B Service Manual

SiBE12-908
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.
2. Divides the room into plural areas and detects existence of humans in each area.
Processing 1. Detection method by INTELLIGENT EYE
Sensor output
Detection signal
from the sensor
(Human motion)
Human detection
signal
Function and Control
(energy saving operation)
Shifts the airflow direction to the area having no human automatically to avoid direct airflow
on humans.
sampling (20msec)
High
Low
(Condition of 10 times or more output)
ON
OFF
(Continue 3 sec.)
ON
OFF
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.
Image of 2-AREA INTELLIGENT EYE
If the sensor detects the outputs 10 times/sec.
or more, it judges humans exist.
1sec
If the detection signal (ON) continues 3 sec. or more,
it judges humans exist.
Wall
Top view
Indoor unit
Area B Area A
· A microcomputer judges human existence in
area A and B by the sensor signal from each
Main Functions
(R2821)
(R3854)
28