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Optical system
Fig. 15:
Optical system
By means of lenses, mirrors and sensors, the area to be monitored is divided into numerous
fields, or so-called segments. If a person moves from one segment to the next, this movement
is detected. The greater the number of segments, the smaller the movement that can be
detected.
Light measurement
Fig. 16:
Brightness sensor
To extend the function, presence detectors can be fitted additional sensors.
The devices of ABB are fitted with a light measurement. This extends the simple On/Off
switching process by one brightness-value threshold.
The brightness-value threshold determines the luminosity from which the light switches on. If
the surrounding light is brighter that the set brightness threshold, the light does not switch on, or
it switches off.
System Manual 2CKA001473B9577
Information about planning and application
│55
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