Vehicle driving deviated-track automatic measuring system based on laser scanning

Abstract

The invention relates to a vehicle driving deviated-track automatic measuring system based on laser scanning. According to the technical scheme, identical opposite-type photoelectric switch sets are respectively arranged a start point, a middle point and an end point of a test area (8), and a light emitting tube and a photoelectric tube of each set of opposite-type photoelectric switches are arranged on two sides of the test area (8). A laser scanning sensor is arranged on the middle position between the middle set of opposite-type photoelectric switches and one adjacent set of opposite-type photoelectric switches. Each set of photoelectric tubes are connected with the adjacent laser scanning sensor through signal wires. The two laser scanning sensors are connected with corresponding interfaces of a test host (10) through data wires. A mobile display terminal (1) is connected with the test host (10) through a wireless local area network. The test host (10) is provided with vehicle driving deviation automatic detection and processing software. The vehicle driving deviated-track automatic measuring system has the advantages that all-weather real-time measurement is available, the precision is high, the automation degree is high, the measuring efficiency is high, the structure is simple, and the mounting and the dismounting are convenient.

Description

technical field [0001] The invention belongs to the technical field of automatic measurement of vehicle running deviation track. Specifically, it relates to an automatic measurement system for vehicle running deviation track based on laser scanning. Background technique [0002] The vehicle drives in a straight line on a flat road. Under the premise of keeping the steering wheel still, the vehicle generally drives in a straight line. However, there are inevitably certain errors in the design, manufacture and assembly process of the vehicle. , causing the vehicle to appear inconsistent between the center line of the front and rear axle centers and the center line of the driving track, that is, the deviation. The deviation of the vehicle can easily cause tire wear, and even lead to dangerous situations such as tire blowout and vehicle loss of control. Therefore, it is particularly important to measure the deviation of the vehicle. [0003] So far, there are many ways to test...

AI Technical Summary

Problems solved by technology

The traditional vehicle deviation detection method is mainly the sprinkler positioning method, which has low detection accuracy and work efficiency, is easily affected by human and external environmental factors, and cannot meet production requirements

With the introduction of new technologies, modern deviation detection methods have appeared one after another, such as optical fiber sensor measurement method, GPS tracking measurement method, close-range camera detection method, laser ranging measurement method, etc., but these methods have their own defects. The sensory measurement method cannot be popularized and applied due to its relatively high cost. At the same time, the sensor needs to be buried in the ground before the measurement, which brings great trouble to the later maintenance; the measurement accuracy of the GPS tracking measurement method is affected by many factors such as the number of satellites and signal quality. The equipment calibration of the close-range camera detection method is complicated and takes a lot of time. At the same time, the measurement equipment has relatively high environmental requirements, and the measurement accuracy is affected by environmental factors, so it cannot be detected all-weather; the laser ranging measurement method only It can perform single-point measurement. If you want to complete the position measurement of multiple test points, you need to use multiple laser rangefinders to complete the detection, which will bring trouble to the equipment installation and easily cause error accumulation.

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