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Multi-wavelength detection device and detection method for smoothness of high-speed railway track

A detection device, a technology of smoothness, applied in the direction of measuring devices, optical devices, instruments, etc.

Active Publication Date: 2012-09-05
FLIGHT AUTOMATIC CONTROL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method cannot meet the needs of high-speed rail for measuring long-wave irregularities above 100 meters

Method used

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  • Multi-wavelength detection device and detection method for smoothness of high-speed railway track
  • Multi-wavelength detection device and detection method for smoothness of high-speed railway track
  • Multi-wavelength detection device and detection method for smoothness of high-speed railway track

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0183] Install the detection device as described above on the rail car equipped with the detection platform, and the technical indicators of the sensors are: left inertial measurement unit LIMU7, right inertial measurement unit RIMU8, and rail direction inertial measurement unit HIMU13. Group, the first displacement device LPDT9, the second displacement device RPDT10, the third laser displacement device GLPDT11, and the fourth laser displacement device GRPDT 12 all use the LK-400G laser displacement device with a measurement accuracy of 0.05mm, and the OD14 uses a laser displacement device with 3600 pulses / revolution Photoelectric encoder. The detection steps are as follows:

[0184] 1. The steps of sensor data collection and storage:

[0185] 1.1. High and low data acquisition and storage: After the system is powered on, the left inertial measurement unit LIMU7 and the right inertial measurement unit 8 start to work, and the high and low preprocessing computer 2 reads the da...

Embodiment 2

[0264] The detection device and the detection method used are exactly the same as in Example 1 from step 1 to step 3.3.

[0265] 3.4. Current wavelength smoothness calculation:

[0266] 3.4.1. Wavelength input: the wavelength λ input by the user 1 The value is 300m;

[0267] 3.4.2. Calculation of ride comfort:

[0268] 3.4.2.1. Calculation of high and low ride comfort:

[0269] h VL ( j ) = α [ dL 1 · tan ( dΘ 1 ) - 1 2 dL 2 · tan ( dΘ 2 ) ] + D ^ WL ( j ...

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Abstract

The invention belongs to the filed of railway track detection, and relates to improvement of a multi-wavelength detection device and detection method for non-smoothness of a track. The detection device provided by the invention comprises a track inspection van provided with a detection platform [15], wherein the upper surface of the detection platform [15] is equipped with a data processing system comprising a computer, shifters, a shift data acquisition card [5], an OD (origin destination) data acquisition card [6] and a power supply. The detection device is characterized in that the shifters are laser shifters, a detection beam [16] is internally provided with two laser shifters, and the upper surface of the detection platform [15] is equipped with an altitude measurement system. The detection method comprises the following steps: sensor data acquisition and storage, data preprocessing and comprehensive data acquisition. By the adoption of the detection device and the detection method disclosed by the invention, the time of working on the track can be greatly shortened and work efficiency is improved, and the measurement requirements of non-smoothness of a high-speed railway forlong waves longer than 100 meters are met.

Description

technical field [0001] The invention belongs to the railway track detection technology, and relates to the improvement of a smoothness detection device and method for the height and direction of the railway track. Background technique [0002] At present, the testing methods for railway track smoothness mainly include chord measurement method, inertial reference method and so on. Among them, the chord measurement method refers to the method of manually pulling a string to actually build a chord line on the track, and evaluate the smoothness of the track by measuring the relative displacement between the top surface of the track rail (gauge point) and the chord line. The wavelength of the track smoothness measured by this method is closely related to the length of the detection string. When it is necessary to analyze the track smoothness of multiple wavelengths, it is necessary to replace the detection device and re-measure, or carry out "small push big" according to the cur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/30
Inventor 张金红党进陈欢焦飞祝运刚刘小溪
Owner FLIGHT AUTOMATIC CONTROL RES INST