The detection function of the conventional infrared vehicle detectors (IRVD) uses the reflection method by emitting infrared rays and detecting vehicles by the amount of light reflected from the road surface and vehicles. With the reflection method, the above-mentioned new functions cannot be correctly achieved. Therefore, the detector hereinafter referred to as RM-OPD uses the range measurement method using infrared rays. With this method, the detection area will be determined by physical positions of the measurement points. Thus, high detection accuracy can be obtained. Also, vehicle type can be classified into small and large vehicles as well as passenger cars and trucks by measuring vehicle profiles obtained from information the time difference obtained from two measurement points. Then, the measurements are corrected using the information on the vehicle height. Thus, vehicle speed can be measured with greater accuracy.
Range-measurement-type optical vehicle detector
Kraftfahrzeugerkennung, Entfernungs- und Geschwindigkeitsmessung mit Infrarotdetektoren für die Verkehrslenkung
1995
6 Seiten, 12 Bilder, 1 Tabelle, 2 Quellen
Aufsatz (Konferenz)
Englisch
Range-measurement-type optical vehicle detector
Kraftfahrwesen | 1995
|Range-Measurement-Type Optical Vehicle Detector
British Library Conference Proceedings | 1995
|Range-Measurement-Type Optical Vehicle Detector
British Library Conference Proceedings | 1995
|Optical Vehicle Detector Using Range Finding Method
British Library Conference Proceedings | 1994
|Optical Vehicle Detector Using Range Finding Method
British Library Conference Proceedings | 1994
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