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3
Before Using the Product
3-1
Detection Principle and Basic Operation of the Sensor
● Detection Principle
This sensor uses reflection of a microwave signal to detect a vehicle.
●
(The higher the reflection, the easier the detection becomes.)
The microwave sensor uses FMCW technology, it can detect a vehicle in the lot.
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The detection logic is shown below.
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Microwave Sensor
Detection Area
If only a person enters into the detection area, the
relay signal output will not trigger (It may detect,
however if a crowd of pedestrian or a person with
luggage).
If a vehicle is parked in the detection area, the sensor
will maintain the detection status.
NOTE
The following cases may occur due to the sensor detection principles.
If a pedestrian or an object is in the detection area after the Vehicle leaves, the sensor
●
will maintain the detection status even if the vehicle leaves the detection area.
The sensor may not revert back to a non-detection status if a flag/banner, tall weeds,
and/or snow remain.
If one vehicle tailgates another vehicle very closely when entering the detection area,
●
they may be recognized as one vehicle.
When a vehicle is present, the sensor detects the vehicle.
When the vehicle leaves the detection area, the sensor will
change to a non-detection status.
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