System and method for detecting overheight and overwidth of vehicle based on laser calibration

A detection system, laser technology, used in traffic flow detection, measurement devices, optical devices, etc.

Inactive Publication Date: 2017-05-17
CHONGQING JIAOTONG UNIVERSITY
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Problems solved by technology

[0008] In view of the above-mentioned deficiencies existing in the prior art, the purpose of the present invention is to provide a vehicle super-height and super-width detection system based on laser calibration with simple structure, strong practicability and high measurement accuracy, and it can maintain long-term operation and execute automatic online Continuous detection without stopping to avoid traffic jams

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  • System and method for detecting overheight and overwidth of vehicle based on laser calibration
  • System and method for detecting overheight and overwidth of vehicle based on laser calibration

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Embodiment Construction

[0041] The present invention provides a vehicle ultra-high and ultra-wide detection system based on laser calibration, such as Figure 1 ~ Figure 4 As shown, the system includes a strip-type laser emitter 2 , a beam-type laser emitter 3 , an image acquisition device 4 , a detection control processing device 5 and an alarm indicator 6 erected above a horizontal road lane 1 . Among them, the light strip type laser transmitter 2 is used to emit a flat laser strip obliquely downward, and the angle between the emitted flat laser strip and the horizontal plane is α, 0°figure 1 and figure 2 It can be seen that once the installation positions and projection angles of the light strip laser transmitter 2 and the beam laser transmitter 3 are fixed, the two laser lines emitted by the beam laser transmitter are projected onto the two laser lines formed on the horizontal roadway. The actual distance S of the spot 0 , The actual height H from the intersection point of the two laser lines e...

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Abstract

The invention provides a system and method for detecting overheight and overwidth of a vehicle based on laser calibration. The method includes the following steps: using the projection angles of a light band type laser emitter and a light beam type laser emitter in a system and the geometrical position relation of the light band type laser emitter and the light beam type laser emitter with the photographing direction of an image acquisition apparatus, a detection control processing apparatus identifying by imaging processing the horizontal displacement conditions and the length condition of a laser line segment from video and image data constituted by a plane laser band projecting to a vehicle which passes by a horizontal road lane, Then using a pre-calibrated vehicle height and width measuring function model to measure the value of the maximum height and the value of the maximum width of the vehicle, thus realizing the detection of the overheight and overwidth of the vehicle. The system has simple structure, strong practicality, and high measuring precision. The system can reach a detection rate at milliiseonds. The system can long time operate and implement automatic online continuous detection and overheight/overwidth alert to multiple vehicles with no pulling over is required, so that the system can avoid traffic congestion and has excellent marketing potential.

Description

technical field [0001] The invention relates to the technical field of transportation safety detection, in particular to a laser calibration-based vehicle ultra-height and ultra-width detection system and method. Background technique [0002] With the rapid development of the national economy, my country's expressway construction and road transport scale have achieved unprecedented development, resulting in the phenomenon of overloaded vehicles is becoming more and more serious. On the one hand, over-limit transportation will shorten the service life of roads and bridges, on the other hand, it will cause changes in the shape of the vehicle body and a decrease in vehicle performance, forming a serious hidden danger to traffic safety. Therefore, vehicle overrun detection will play an important role in ensuring the smooth flow of roads, maintaining road property rights, ensuring transportation safety and the healthy development of the transportation market. [0003] At present...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/04G08G1/04
CPCG01B11/043G01B11/046G08G1/04
Inventor 蓝章礼李战黄涛匡恒姚进强
Owner CHONGQING JIAOTONG UNIVERSITY
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