Train GPS mileage self-correcting system and correcting method thereof

Abstract

The present invention relates to a train GPS mileage automatic amendment system and an amendment method. The system consists of a processing computer, the processing computer uses a serial port to connect with a GPS receiver, and the processing computer is connected with a rail detecting car through a network by the serial port. The present invention has the amendment method that information gotten by the GPS receiver is combined with the mileage of the manual amendment mileage, to establish a mileage data base, information continually gotten by the GPS receiver in the moving process of the rail detecting car is continuously matched with the mileage of the established mileage data base and calculated lingeringly, the mileage is amended for the detection system in real time according to a calculating result; the signal direction judgment and treatment is operated through the obtained information by GPS. The present invention resolves the retardancy of the GPS receiver when the GPS receiver outputs signals, thus the accuracy of the dynamic measurement of the GPS receiver is improved, the speed-up requirement is met, the mileage adjustment is not greatly influenced by the speed when the speed of the train is high, the precision is high, and the operation is simple.

Description

technical field [0001] The invention relates to a vehicle electronic positioning correction system, in particular to a train GPS mileage automatic correction system for railways and a correction method thereof. Background technique [0002] In the railway operation system, many special railway vehicles are used, such as track inspection vehicles, rail flaw detection vehicles, and geological radar vehicles. These special vehicles are used to check track defects, eliminate hidden dangers of accidents, guide line maintenance, improve line smoothness, and ensure driving safety. Large-scale dynamic detection equipment. The mileage correction of special vehicles, that is, the position determination of trains running on railway lines, is a basic engineering data. In the prior art, the location is represented by the number of kilometers on the line, and the accumulation of mileage is based on the accumulation of the circumference of the wheel rotation and the number of rotations to...

AI Technical Summary

Problems solved by technology

[0006] 3) Manual correction makes the workload of the operator heavy

[0007] At present, with the development of GPS technology, GPS positioning on the vehicle can be used to output the latitude and longitude of the track defect, and then search for the defect according to the latitude and longitude, but because the exact kilometer of the defect is unknown, the mileage cannot be automatically checked

In addition, the method widely used in the field for mileage calibration on track inspection vehicles still uses manual keyboard input, which greatly affects the mileage accuracy of the track inspection system, and the workload of the operators is too heavy, and the It is impossible to recognize the railway mileage plate when the train speed is fast and the line of sight is disturbed during night driving

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