Method for measuring vehicle speed by utilizing equidistant camera of vidicon

A camera and vehicle technology, which is applied in traffic control systems, instruments, and traffic control systems of road vehicles, can solve problems such as misjudgment, inability to detect vehicle speed, and wrong speed, so as to reduce construction costs, traffic disputes, and The effect of workload

Inactive Publication Date: 2011-06-29
BAODING VICTORY TRAFFIC FACILITIES ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is: what it measures is an average speed, and the vehicle speed within a short distance cannot be detected; There is a huge work pressure on the erection, and it is also a huge investment in the construction cost; in addition, when one of the monitoring terminals fails, the measured speed will be doubled, resulting in misjudgment. occur

Method used

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  • Method for measuring vehicle speed by utilizing equidistant camera of vidicon
  • Method for measuring vehicle speed by utilizing equidistant camera of vidicon
  • Method for measuring vehicle speed by utilizing equidistant camera of vidicon

Examples

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Effect test

Embodiment 1

[0019] The method for measuring vehicle speed by using equidistant cameras to take pictures is applied to measure the speed of running vehicles on expressways or ordinary roads. Such as figure 1 As shown, a wide-angle camera 1 is erected vertically by a bracket 2 on one side of the required speed measuring point on the road. When the wide-angle camera is erected, the measurement distance S of the measurement point is calculated according to its viewing angle range 4 and the erected vertical height H from the ground.

[0020] When the vehicle 3 enters the viewing angle range of the wide-angle camera, start timing t1, and when it leaves the viewing angle range, the timing ends at t2, and the time difference within this distance is Δt=t2-t1, and finally calculate the speed v of the vehicle at the measuring point =S / Δt. When the driving speed exceeds the set speed, the information is transmitted to the central control system for penalty processing.

[0021] While the wide-angle...

Embodiment 2

[0023] The difference between this embodiment and Embodiment 1 is that the present invention is applied to speed measurement and image storage of passing vehicles at intersections. The position of the wide-angle camera is located at the center of the intersection, and its angle of view radiates to the entire intersection. When a passing vehicle violates the rules or speeds, the wide-angle camera will take pictures of the violating vehicle and transmit it to the central control system.

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Abstract

The invention discloses a method for measuring a vehicle speed by utilizing equidistant camera of a vidicon. A wide-angle vidicon vertical to the ground is installed at the position with a certain distance from the ground, and the vehicle driving speed is calculated by utilizing time for a vehicle to pass the road surface distance set by the wide-angle vidicon in the driving process. According to the method, the functions of measuring speed and retaining images are simultaneously achieved by just using one wide-angle vidicon, thereby saving a great quantity of construction cost. In addition, when the wide-angle vidicon fails, the vehicle speed can be immediately stopped to be measure at a speed measuring spot, thus avoiding erroneous judgement, and reducing the occurrence of traffic disputes.

Description

technical field [0001] The invention relates to the technical field of speed measurement, in particular to a method for measuring the speed of a traveling vehicle by using a camera. Background technique [0002] With the rapid development of highway and automobile technology, road traffic management is becoming more and more proficient, especially with the development of science and technology, the application of electronic traffic management has attracted more and more attention. Real-time monitoring is carried out to determine whether the vehicle is speeding. Moreover, the new traffic regulations require that dynamic images of motor vehicles speeding must be retained as evidence for law enforcement. However, most of the existing speed measuring devices are realized by using induction speed measuring elements combined with several cameras, such as using Doppler radar wave reflection, infrared induction, buried coils, etc., and can only work by erecting together with the ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/054
Inventor 王士元王川王茜甄云云
Owner BAODING VICTORY TRAFFIC FACILITIES ENG CO LTD
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