SiBE12-818 Main FunctionsFunction and Control 651.11 2 AREA INTELLIGENT EYE (FTXS-G)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 airflowon humans.Processing 1. Detection method by INTELLIGENT EYE This sensor detects human motion by receiving infrared rays and displays the pulse waveoutput. A microcomputer in an indoor unit carries out a sampling every 20 msec. and if it detects 10cycles of the wave in one second in total (corresponding to 20msec.× 10 = 200msec.), andwhen the ON signal continues 3 sec., it judges human is in the room as the motion signal isON INTELLIGENT EYE sensor is divided into 2 areas and detects humans in each area..If the sensor detects the outputs 10 times/sec.or more, it judges humans exist.1secsampling (20msec)HighLowONOFFSensor output(Human motion)Human detectionsignalONOFFDetection signalfrom the sensor(R2821)(Condition of 10 times or more output)(Continue 3 sec.) If the detection signal (ON) continues 3 sec. or more,it judges humans exist. Image of 2 AREA INTELLIGENT EYETop view(R3854)Indoor unitWallArea AArea B· A microcomputer judges human existence inarea A and B by the sensor signal from each
