2-Area Intelligent Eye - Daikin CTXU25G2V1B Service Manual

Main Functions
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
16
(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 msec. and if it detects 10
cycles of the wave in one second in total (corresponding to 20msec.× 10 = 200msec.), and
when the ON signal continues 3 sec., it judges 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
Indoor unit Top view
Area B Area A
· A microcomputer judges human existence in
area A and B by the sensor signal from each
SiBE12-908
(R2821)
(R3854)
Function and Control