A Vision-Based Method for Measuring the Straight Tracks of Vehicles and Trains

Abstract

The invention relates to a vehicles and trains straight driving track measuring method based on vision. The vehicles and trains straight driving track measuring method based on vision comprises the following steps: respectively arranging a first camera 5 and a first camera 6 on the left side of a headstock of a motor tractor and the left side of a compartment of a trailer, requiring a camera to be vertically arranged downward, enabling an optical axis of the camera to be perpendicular to the image of front lower position of a headstock of a ground shooting car as far as possible, and the camera is provided with a supplementary lighting apparatus to supplement light insufficiency; using a fixing line to fix location at the most front portion of the motor tractor, in the process of driving the first camera 5 and the first camera 6 start to gather video images at the same time; and acquiring a video flowing shoot by the camera, and proceeding real-time process for videos through an upper computer.

Description

technical field [0001] The invention designs a method for measuring a vehicle train running position track, and in particular relates to a vision-based accurate vehicle train position track measurement method. Background technique [0002] With the rapid development of road transportation, the characteristics of high load capacity, economy and efficiency of automobile trains have attracted the attention of the industry, and they have gradually become the main models of long-distance logistics. Accurately obtain the position trajectory of the car train during the running process, and then through simple measurement calculations, it can be known that the front swing value, rear swing value, and maximum width of the tractor during the running process of the car train affect the road capacity and driving safety. The parameters provide a parameter basis for the study of vehicle train stability and the development of intelligent transportation systems (ITS). [0003] The maximum ...

AI Technical Summary

Problems solved by technology

[0006] 1) The liquid sprayed by the spray gun is easily affected by the surrounding air flow, and the formed curve is not in the actual position, resulting in a large error;

[0007] 2) After conducting an experiment, the liquid on the ground is not conducive to repeated experiments;

[0008] 3) This method has low accuracy and high missed detection rate, and cannot completely detect the trajectory of the tractor

This method has the characteristics of accurate measurement and is not affected by the environment, but it is expensive, and different models must be statically calibrated before use. The operation is complicated, and it is not suitable for large-scale promotion and application.

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