Method for monitoring automobile overspeed based on distributed optical fibers

A technology of distributed optical fiber and vehicle speed, applied in traffic control systems of road vehicles, measurement of ultrasonic/sonic/infrasonic waves, measurement devices, etc. Small volume and the effect of expanding the field of application

Active Publication Date: 2021-08-24
GUANGZHOU INST OF RAILWAY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, in traffic accidents, speeding accounts for a very high proportion. The monitoring methods usually used include radar speed measurement, laser speed measurement, and video monitoring. These methods require the purchase of new equipment and increase costs.

Method used

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  • Method for monitoring automobile overspeed based on distributed optical fibers
  • Method for monitoring automobile overspeed based on distributed optical fibers
  • Method for monitoring automobile overspeed based on distributed optical fibers

Examples

Experimental program
Comparison scheme
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Embodiment

[0038] Example: such as figure 1 and 2 As shown, the method for monitoring automobile overspeed based on distributed optical fiber of the present embodiment is characterized in that,

[0039] Including experiments to determine the vehicle frequency characteristics, the above-mentioned experiments to determine the vehicle frequency characteristics include the following steps:

[0040] S101, allowing the experimental vehicle to pass through the starting point of the distributed optical fiber of the road section;

[0041] S102, regularly record the distributed optical fiber strain data when the above-mentioned experimental vehicles pass by, and take the minimum value of the distributed optical fiber equipment as the time interval;

[0042] S103, displaying the above distributed optical fiber strain data obtained in S102 in the time domain, and converting the time domain signal into a spectrum signal by Fourier transform;

[0043] S104, finding the frequency of the above-mentio...

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Abstract

The invention relates to an automobile overspeed monitoring technology, in particular to a method for monitoring automobile overspeed based on distributed optical fibers. The method for monitoring the automobile overspeed based on the distributed optical fibers comprises the steps of determining the automobile frequency characteristics through experiments and monitoring the automobile speed on site. The method has the advantages that distributed optical fiber equipment in an existing road section is fully utilized, overspeed detection of passing vehicles is achieved under the condition that cost is not increased, the whole method is simple in algorithm and small in calculation amount, and the application field of distributed optical fibers is expanded.

Description

technical field [0001] The invention relates to a vehicle overspeed monitoring technology, in particular to a method for monitoring vehicle overspeed based on distributed optical fibers. Background technique [0002] In highway construction, it is difficult to understand the geological conditions of the slope thoroughly in the preliminary investigation work, and the stability of the slope is affected by environmental comprehensive factors with dynamic changes. Therefore, it is necessary to focus on monitoring these parts. For example, the East Transit Section of the Qujing Southeast Transit Highway project uses distributed optical fibers with strong anti-interference ability, high sensitivity, and full-length coverage (for Every point can be monitored, avoiding the occurrence of serious disasters and missed inspections) Monitoring and other advantages have achieved good results in the safety monitoring of slopes. [0003] At present, speeding accounts for a very high propor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/04G08G1/052G01H9/00
CPCG08G1/04G08G1/052G01H9/004
Inventor 黎剑华申富林黄奕辉陈沧王卫辉黄正红徐晓斌李旭辉许程龚莹
Owner GUANGZHOU INST OF RAILWAY TECH
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