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This thesis studied automotive vehicle body position deviation detection system is to meet the national standard testing requirements and the first developed telemetry equipment , which detects fast, accurate. This device is easy to operate , small footprint, low power consumption without parking position detection line limiting other advantages. Can adapt to a variety of large , medium and small test line requirements. The main content of this paper the following aspects : 1. Detection system through theoretical analysis of vehicle body position deviation causes, as well as car body position deviation due performance of the car to analyze the impact , which makes car car car body position deviation detection system in theory is not only necessary but also feasible . (2) detection system based in part on the mechanical design of the environment, temperature, humidity , and various test line requirements , this paper designed a secure, flexible , convenient and rapid detection and accurate detection of mechanical systems. 3 circuit control section detection system the detector and the reset circuit is cleared , the rotation angle measurement probe steering circuit . 4 detection system calibration and testing by real vehicle detection system calibration , indicating that the system is high precision , to meet testing requirements , through the real vehicle for testing, indicating that the higher system reliability and credibility to achieve far automobile Inspection of vehicle body position deviation purposes. 5 experimental analysis on the real car made ??a lot of experiments and analysis of experimental data , obtained test results are reliable. The paper made ??innovative research on the use of advanced non-contact laser rangefinder condition , accurate and fast measurement of the distance between points , the use of triangular relation calculating the body length . The camera will use irregular surfaces ( front and rear ) of the image transferred to the computer , use the computer processing the image accurately find the midpoint of the front and rear , the complex issues simple
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