Laser ground projection type commercial car body length initiative visual detection system

Abstract

The invention discloses a laser ground projection type commercial car body length initiative visual detection system which aims at solving the problems that length direction image collection and initiative visual measurement of a whole large size commercial car can not be achieved. The system comprises a line projector assembly body base (1), a line projector seat (2), a line projector clamp (3), a camera seat (4), a camera (5), a line projector (6) and a drum-type braking test table (7). According to the laser ground projection type commercial car body length initiative visual detection system, a non-contact automatic measuring system capable of automatically collecting car body laser projecting rays and measuring the length of a car body through initiative machine visual sense.

Description

technical field [0001] The invention relates to a detection device in the field of automobile industry, more specifically, it relates to a laser ground projection type active visual detection system for the body length of commercial vehicles. Background technique [0002] In order to ensure the safe driving of automobiles, the measurement of automobile body length is one of the main inspection items in the field of automobile inspection. At present, the measurement of vehicle size is mainly based on manual meter measurement, which has low efficiency, poor accuracy, and high labor intensity for staff. The method of collecting vehicle images and then measuring the size of the vehicle solves the above technical bottlenecks. However, due to the complex shape and large size of the commercial vehicle, the algorithm for extracting the vehicle from the vehicle image collected by the camera is complex, the measurement accuracy is low, and it takes a long time. It cannot adapt to the...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the present situation that it is impossible to apply active vision technology to realize the acquisition of vehicle length characteristic images and then complete the high-precision detection of the vehicle size of commercial vehicles, the present invention provides a laser plane that can project a laser plane from the side of the vehicle along the length direction of the commercial vehicle to the body, and collect Since the rear of the car body blocks the high-brightness laser line that irradiates the ground, the camera installed on the roof collects the ground light image and analyzes the end point position information in the ground laser line to achieve a low image distortion and high measurement accuracy. Easy to install, highly versatile, and reliable, it is a laser ground projection type active visual inspection system for vehicle body length that can meet the requirements of national metrology and quality supervision departments and manufacturers for vehicle image acquisition

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