GPS (Global Positioning System) track irregularity detection system and method

Abstract

The invention discloses a GPS (Global Positioning System) track irregularity detection system and method. The system comprises a measuring unit and a data postprocessing unit, wherein the measuring unit comprises a moving bracket movably arranged on the surface of a track, and a measuring device; the measuring device is rigidly fixed on the moving bracket and comprises two independently-arranged measured data acquisition recorders; the measured data acquisition recorders are used for measuring state data of the moving bracket in real time and recording the state data measured at every time to a data recording unit according to a time sequence arrangement; and the data postprocessing unit is used for processing the state data recorded in the data recording unit in an off-line way. The GPS (Global Positioning System) track irregularity detection system and method disclosed by the invention have the advantages of high measurement precision, high measurement speed and complete measuring functions.

Description

Technical field: [0001] The invention belongs to the field of track detection, and relates to a GPS track detection device and a detection method thereof, in particular to a GPS track irregularity detection system and a detection method thereof. Background technique: [0002] Track inspection cars, streamlined trolleys, track inspection trolleys, strings and track rulers are the main equipment for measuring track irregularities at present. Due to various reasons, the accuracy of traditional measuring equipment is limited and it is impossible to quickly and effectively detect high-speed rail ballastless tracks. [0003] Although the rail inspection vehicle can quickly detect the track, it needs to use many inertial sensors to complete various detection tasks, the structure is complicated, and the operation is complicated, and it needs to train professionals to measure. Because of the offset error, the wavelength and measurement accuracy that the track inspection vehicle can ...

AI Technical Summary

Problems solved by technology

The inaccuracy of standard orbit information is also an important reason affecting the accuracy of orbit detection

[0021]3. Defects in measurement technology

The movement and vibration of the measurement equipment will affect the measurement value of the accelerometer, so the measurement accuracy of the attitude is also limited

In conclusion, inertial measurement equipment is not suitable for long-term use, because the measurement speed is limited, so that the measurement distance is also limited

[0030]5. Limitations of measurement methods

There are still some other weaknesses in the online real-time processing method adopted by most of the measuring equipment at present. For example, what can be provided for real-time processing is only the measurement data collected in a short time in the past, the measurement information is limited, and the computer processing Ability is also limited, unable to perform complex mathematical calculations

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