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High-speed rail smoothness detection system and method based on satellite positioning and inertial navigation.

A technology of satellite positioning and detection system, applied in railway inspection cars, railway vehicle shape measuring instruments, railway car body parts, etc., can solve the problems of low measurement efficiency, inability to use track adjustment, and low measurement accuracy, and improve work efficiency. , The effect of reducing economic costs and low maintenance costs

Active Publication Date: 2019-04-02
山东北斗华宸导航技术股份有限公司 +1
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  • Application Information

AI Technical Summary

Problems solved by technology

[0006] There are following disadvantages in the prior art: (1) measurement efficiency is low;
[0008] (3) Low measurement accuracy;
[0009] (4) Limited by various technologies, it cannot be used for track adjustment, especially for long-wave irregularity track adjustment

Method used

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  • High-speed rail smoothness detection system and method based on satellite positioning and inertial navigation.
  • High-speed rail smoothness detection system and method based on satellite positioning and inertial navigation.
  • High-speed rail smoothness detection system and method based on satellite positioning and inertial navigation.

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Embodiment 1

[0030] The invention provides a high-speed rail track smoothness detection system and method based on satellite positioning and inertial navigation, comprising the following steps:

[0031] (1) Get real-time GNSS satellite data from multiple base stations built along the fixed track, and calculate the precise coordinates of the base station;

[0032] (2) The track inspection car is placed on the track, observes for a certain period of time, and obtains synchronously observed GNSS satellite data;

[0033] (3) Through the data measured by the track gauge sensor, sleeper identifier, odometer, and inertial navigation system on the track inspection trolley, combined with the satellite data in (1) and (2), calculate the external geometric parameters of each sleeper; use The external geometric parameters and the data on the track inspection trolley calculate the internal geometric parameters of each sleeper, which are used to guide precise track adjustment.

[0034] As a kind of pre...

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Abstract

The invention relates to the field of high-speed rail smoothness detection and in particular to a high-speed rail smoothness detection system and method based on satellite positioning and inertial navigation. The system and method can obtain high-precision external geometric parameters of a rail by arranging the GT-CORS base station network by establishing a GNSS reference station on the CPII. Through a gauge detection device, a sleeper identification device, an odometer on a rail detection vehicle and in combination with the acquisition of the accurate coordinate results of three GNSS antennas, the rail parameters can be calculated to guide the precise rail adjustment. Large-scale satellite positioning monitoring point networking method millimeter-level joint solution and three-antenna GNSS rail inspection equipment short baseline fast and millimeter-level solution method achieves precision of plane 1 to 2mm and an elevation measurement error of + / - 2.5mm. The method avoids the dependence on CPIII, increases rail detection speed from the original 100m / h to 1000m / h d, greatly improves the detection efficiency of the external parameters of the rail, significantly reduces economic cost, and has broad technical development and application prospects.

Description

technical field [0001] The invention relates to the field of smoothness detection of high-speed rail tracks, in particular to a high-speed rail track smoothness detection system and method based on satellite positioning and inertial navigation. Background technique [0002] With the rapid development of my country's high-speed railways and the continuous improvement of operating speed, the requirements for the smoothness of high-speed railway tracks are also getting higher and higher. The track smoothness of my country's high-speed railways adopts a detection method that combines rough detection by moving inspection vehicles and precise detection by track inspection trolleys. Dynamic inspection vehicles can quickly diagnose the overall condition of the line, determine the approximate section and deformation level of the detected track deformation, and then Use the track inspection trolley to carry out precise measurement and track adjustment in the diseased area. [0003] At...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61K9/08B61D15/08
CPCB61D15/08B61K9/08
Inventor 丁志刚过静珺白征东曾润国贾庆鲁周百胜王增岩刘涌焦杰
Owner 山东北斗华宸导航技术股份有限公司
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