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Device and method for detecting wheel

A wheel and vehicle technology, applied in traffic flow detection, traffic control system of road vehicles, measuring devices, etc., can solve complex, wrong signal maximum, wrong wheel detection and other problems

Inactive Publication Date: 2012-12-26
KAPSCH TRAFFICCOM AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The automatic detection of such maxima in the signal curve requires a signal analysis search for extrema and is correspondingly complex
Also, the gap between the towing vehicle and its trailer would falsely indicate signal maxima and intermediate "wrong" maxima, which would lead to false wheel detection

Method used

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  • Device and method for detecting wheel
  • Device and method for detecting wheel
  • Device and method for detecting wheel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] exist figure 1 , the vehicle 1 is moving on the road 2 in the direction of travel 3 . Vehicle 1 has wheels 4 projecting downward from a body 5 of vehicle 2 and at the same time at least partially exposed (ie visible from the side) in a body opening at the side of the body.

[0030] The Doppler lidar or radar device 6 emits a concentrated lidar or radar measuring beam 7 from the curb of the road 1 obliquely to the direction of travel 3 and slightly above the surface of the road, so that the measuring beam 7 passes approximately at the wheel of the vehicle 4 incident on the vehicle 1 in the region.

[0031] The Doppler lidar / radar device 6 estimates the reception frequency of the measurement beam 7 reflected by the vehicle 1 or its wheels 4 in a manner known in the art, wherein the Doppler difference between the emitted and reflected measurement beam 7 can be obtained from The effect-induced frequency shift determines the (projected) component v of the vehicle velocity ...

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PUM

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Abstract

The invention claims a method for detecting the wheel a method and device for. The invention claims a method for detecting the moving direction of the on the road walking wheel and at least partially exposed out of the transverse direction of vehicle wheel method for the method comprises the following steps: From of road side and relative to the advancing direction of the inclined with a frequency of the known time evolution of the electromagnetic valve the measuring beam reflected to the road area; Receiving the through the vehicle reflected by measuring beam valve and recording the frequency of the known relative to the evolution of the time evolution f; And the vehicle through tp during the evolution of the recording in the f and exceeds the scheduled size the extending s to the frequency expansion a2 detecting the vehicle wheel.

Description

technical field [0001] The invention relates to a method and a device for detecting wheels of a vehicle traveling on a road in the direction of travel and whose wheels are at least partially exposed laterally. Background technique [0002] Numerous applications are concerned with the detection of vehicle wheels. From the identification of the wheels it can therefore be deduced with certainty that driving over a given traffic zone is in order, for example to monitor boundaries or to initiate certain actions such as triggering an alarm, turning on lights, opening barricades, taking pictures for surveillance purposes, etc. Contemporary traffic tolling systems also often make toll calculations based on the number of axles, so that the detection of wheels (axles) can also become an important basis for road maintenance or parking toll systems. [0003] It is known from DE 10 2008 037 233 A1 that the detection of the wheels of a moving vehicle based on the horizontal component of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/41G01S13/58
CPCG08G1/04G08G1/0116G01S13/91G01S7/415G01S13/58
Inventor O·纳吉
Owner KAPSCH TRAFFICCOM AG