Vehicle driving deviation measuring method and system based on satellite real-time difference signals

Abstract

The invention relates to a vehicle driving deviation measuring method and system based on satellite real-time difference signals. Among two satellite receivers, one is arranged to be a mobile station, and the other is arranged to be a reference station. The satellite receiver of the reference station is placed at a reference station set point whole position information is already known nearby a test area, the satellite receiver of the mobile station is arranged at a fixed position on a detected vehicle, before a vehicle is driven into the test area and a test begins, the two satellite receivers are started, during the driving process of the vehicle, the two satellite receivers simultaneously receive signals emitted by the same satellite at the same time, and the satellite receiver of the reference station makes a comparison between received position information of the reference station and already known information, obtains a deviation distance and a deviation angle through a difference and error correction method, and displays a test result on a system control host computer and a mobile terminal. The system and method provided by the invention have the advantages of round-the-clock operation, high precision and high efficiency, and capability of monitoring the driving condition of the vehicle in a measuring process in real time and correcting deviation errors caused by the driving speed and the direction errors of the vehicle.

Description

technical field [0001] The invention relates to the technical field of information processing and automatic detection, in particular to an automatic measurement method and system for vehicle deviation trajectory based on satellite real-time differential signals. Background technique [0002] The basic phenomenon of vehicle deviation is that the vehicle cannot keep moving forward in a straight line during driving, and always automatically deflects in a certain direction. There are many reasons for deviation, including the reasons of the vehicle itself and the factors of the road. Vehicle deviation not only easily causes driver fatigue, but also poses a major safety hazard. If there is too much deviation, it will easily lead to traffic accidents, so it is very important to detect the deviation of the vehicle. [0003] Traditional driving deviation test methods, such as manual observation method and sprinkler positioning method, have relatively rough detection methods, require...

AI Technical Summary

Problems solved by technology

However, there are more or less detection defects: in the photogrammetry method, since the cameras under test cannot be installed in the same coordinate system, the system calibration is very complicated and prone to large errors, and the exposure time of the camera is affected by the test The influence of vehicle speed and ambient light intensity also produces test errors; in the sensor detection method, since the sensor is buried under the road surface of the test area, the maintenance of the sensor is very troublesome; there are certain errors in the initial direction and the final direction measured by the laser ranging method

Moreover, all the above methods cannot solve the problem of the deviation error caused by the vehicle's driving speed at the measurement starting point and the set measurement speed error (±ΔV)

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