Vehicle driving deviation detection method, device and system based on laser ranging

Abstract

The invention provides a vehicle driving deviation detection method, a device and a system based on laser ranging, which relate to the field of laser ranging. The method comprises steps: first ranging data when a to-be-detected vehicle passes across a first ranging plane of a first ranging unit are acquired, and according to the first ranging data, a first coordinate set of the center point in a vehicle body is obtained; and second ranging data when the to-be-detected vehicle passes across a second ranging plane of a second ranging unit are acquired, and according to the second ranging data, a second coordinate set of the center point in the vehicle body is obtained, a series of driving deviation parameters of the to-be-detected vehicle are solved according to the first coordinate set, the second coordinate set and related parameters, and driving deviation detection on the to-be-detected vehicle is realized. Thus, the ranging precision can be improved, the device is simplified, vehicle driving deviation detection is not subjected to interference of outside environment and light, and all-weather 24-hour vehicle driving deviation can be realized.

Description

technical field [0001] The invention relates to the field of laser ranging, in particular to a method, device and system for detecting vehicle deviation based on laser ranging. Background technique [0002] Vehicle deviation is common, and more serious deviation will bring additional load to the driver's operation, and even cause traffic accidents and personal safety. Therefore, my country's "Motor Vehicle Operation Safety Technical Conditions" (GB7258-2012) standard has made qualitative regulations on vehicle deviation. Relevant automobile manufacturers also regard the vehicle deviation detection as the last test item of the factory self-inspection. Commonly used deviation detection parameter meanings, such as figure 1 Shown: [0003] ①Vehicle average speed: the average speed of the vehicle in the driving area during the test, which can be calculated from the length of the test area and the passing time difference; [0004] ②Incident angle θ 0 : Refers to the center li...

AI Technical Summary

Problems solved by technology

However, since not all sides of the vehicle are flat, there is a large error in the method of determining the angle of incidence by using the distance values ​​measured by two rangefinders at the same measuring point using the existing technology

[0013] Among the above methods, there are one or more deficiencies in measurement accuracy, cost, anti-interference ability, and ease of operation. Therefore, it is necessary to find a method that combines measurement accuracy, cost, anti-interference ability, ease of operation, and automation. Vehicle deviation detection method

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