Before Using The Product; Detection Principle Of The Sensor; Sensor Operation - Optex Virtual Loop Installation Instructions Manual

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Before using the product

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Detection principle of the sensor

• This sensor uses the reflection of microwave to detect vehicles.
• The microwave sensor uses FMCW technology to detect the presence of a vehicle.
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Sensor operation

Non-detection
The sensor is a non-detection status when the
vehicle is not in the area.
Detection
When a vehicle remains in the detection area,
the sensor holds a presence "Detection" status.
Differences due to vehicle direction
NOTE
The direction that a vehicle is moving with regards to the sensor affects the
detection capability.
Refer to "Sensor Installation Conditions" (pp. 9–11), and install it correctly.
Parameters must be adjusted depending on the installation angle, so make
sure to install it correctly.
It may be difficult to detect a vehicle that suddenly enters the detection area
from a blind angle.
Caution
* The following situations may occur due to the sensor detection principles.
• If a pedestrian or an object is in the detection area after a vehicle leaves the area, the sensor will
maintain the detection status. The sensor may not change to (or have less of a tendency to change to)
non-detection status due to flags, banners, tall weeds, etc.
• If one vehicle tailgates another vehicle very closely when entering the detection area, they may be
recognized as a single vehicle.
Detection area
Detection
When a vehicle enters the detection area, the sensor
will change to a detection status.
Non-detection
When the vehicle leaves the detection area, the sensor
will change to a non-detection status.
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