Detecting device and method for realizing vehicle passing stop-line utilizing stop-line visual frequency signal

A video signal and detection device technology, applied in traffic flow detection and other directions, can solve the problems of difficult to meet the real-time requirements of traffic monitoring, long detection requirements, and difficult to put into practice. found effect

Inactive Publication Date: 2009-03-04
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When it is installed on two parallel lanes, if a car crosses the stop line in one of the lanes, its strong shadow may cause the camera monitoring the other lane to generate a wrong signal of a car crossing the stop line
This method of using a camera to detect a car crossing a stop line is difficult to put into practice
Moreover, this method requires a long time for detection, and it is difficult to meet the real-time requirements of traffic monitoring.

Method used

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  • Detecting device and method for realizing vehicle passing stop-line utilizing stop-line visual frequency signal
  • Detecting device and method for realizing vehicle passing stop-line utilizing stop-line visual frequency signal
  • Detecting device and method for realizing vehicle passing stop-line utilizing stop-line visual frequency signal

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Embodiment Construction

[0037]The block diagram of the circuit structure of the vehicle passing the stop line detection device in this embodiment is shown in FIG. 1 . The video signal is captured by a camera mounted on a horizontal pole.

[0038] The present invention utilizes the video signal to realize the video branch 1 of the vehicle passing stop line detection device, the stop line signal decision device 2, the integrator 3, the sampling circuit 4, the counter 5, the stop line decoder 6, the car indicator 7, the The car sampling circuit 8, the car signal combining circuit 9, and the pulse width adjustment circuit 15 are sequentially connected in series; the other output terminal of the video branch circuit 1 is connected to the input terminal of the line and the field synchronous separation circuit 13, and the line and the field synchronous separation circuit 13 are connected in series. The output end of the line synchronization signal is connected to the input end of the line sampling generatio...

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Abstract

This invention relates to a test device and a method for testing over-parking lines of vehicles by parking-line video signals including a video shunt, a parking line signal judger, an integrator, a sampling circuit, a counter, a parking line decoder, a car-passing indicator, a car-passing sample circuit, a car-passing signal merge and a pulse width adjusting circuit connected in series, which can be widely used in electronic police equipment to judge if there are cars rushing the parking lines at red light to further use the output signals of the device to control camera or shooting devices of electronic police to record against-the-rule behaviors of vehicles.

Description

technical field [0001] The invention relates to a device for traffic management, in particular to an improvement of a detection device for motor vehicles running a red light violation, and belongs to the technical field of traffic management devices. Background technique [0002] Electronic police is a high-tech product of modern traffic management. This kind of high-tech equipment is used to detect violations of motor vehicles while driving and take pictures and records in time, so as to provide more detailed basis for violations. Electronic police equipment must have a device for detecting vehicles passing through the stop line. When there is a vehicle passing the stop line at a red light, the violating vehicle can be photographed and recorded. Such devices can be mainly divided into the following categories: [0003] 1. Embed a rectangular coil near the stop line, and use the change of magnetic flux generated when the vehicle passes the coil to determine whether there ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/01
Inventor 傅海阳高鹏张青吴圳炎朱小龙
Owner NANJING UNIV OF POSTS & TELECOMM
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