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High-speed railway parking signal point measuring method

A parking signal and measurement method technology, applied in the direction of measuring devices, instruments, and optical devices, can solve the problem of no parking spots, etc., and achieve the effects of reducing measurement errors, accurate measurement, and accurate measurement data

Pending Publication Date: 2021-07-23
中铁建电气化局集团南方工程有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the railway has become the main travel mode chosen by the Chinese people. There are parking signal points along the high-speed railway line, and at the same time, there are parking points such as arrival signals and departure signals in the station. Each stop signal point has a unique The design mileage of , denoted as DKxx+xxx, a technical solution that can accurately determine all the parking points along the high-speed railway has not yet appeared in the prior art

Method used

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  • High-speed railway parking signal point measuring method
  • High-speed railway parking signal point measuring method
  • High-speed railway parking signal point measuring method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1, such as figure 2 As shown, the measurement method of straight line segment:

[0019] ①Use a laser rangefinder to measure the distance L at one time, and record it as the position of point B 1; L=VT / 2 (V is the speed of light, at 20 degrees Celsius, the weather is clear, T is the speed of the laser from the emission through the reflector to the laser rangefinder time),

[0020] Since the one-time measurement of the distance between point B and reference point A has a large error, it is generally not used, but when the distance is less than 400M, one-time measurement distance can be used to determine the position of point B1;

[0021] ②Use the laser rangefinder to measure and accumulate multiple times to determine the position of point B. When the measurement distance is close to 1000m, we divide it into 5 sections (empirical data) and measure the distance respectively: L1, L2, L3, L4, L5. Stop signal point B position 1;

[0022] ③According to the query of ...

Embodiment 2

[0025] Example 2, such as image 3 As shown, the measurement method of the curve segment:

[0026] Since the reference point and the signal B point are located on the entire curve segment, the distance between the two mileages cannot be measured and accumulated in a long straight line segment. Position 1 can only be determined by accumulative approximation of multiple small straight lines.

[0027] (1) According to the size of the curve radius, the measurement length is divided into several sections to accumulate and approach position 1. Since the minimum value of the curve radius of the high-speed railway is 4000M, it is generally prepared to use 7 sections of cumulative approximation method to determine position 1 on the curve section, as above L1...L7 in the figure;

[0028] (2) Also query the nearest CPIIII point according to the position of the theoretical parking point B, subtract the mileage of CPIII from the mileage of point B to obtain a distance L7 of <50m, measure...

Embodiment 3

[0031] Example 3, such as Figure 4 As shown, the measurement method of the mixed section of straight line and curve:

[0032] There are three main forms of mixed straight line and curved line: straight line + curved line; curved line + straight line; curved line + straight line + curved line, etc. The following mainly introduces the measurement method of straight line segment + area line segment, and other similar measurement methods are the same.

[0033] ① Use a section on the straight line to measure the length of the approaching straight line: use a laser range finder to measure the distance L1 at one time, record it as point F, and use it as the boundary point between the straight line and the curved line; L1 = VT / 2 (V is the speed of light , at 20 degrees Celsius, the weather is clear, T is the time for the laser to reach the laser rangefinder after being reflected by the mirror);

[0034] ②Curve segment adopts multi-segment cumulative approximation method, using lase...

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Abstract

The invention provides a high-speed railway parking signal point measuring method, which comprises the following specific steps: finding a standard mileage reference point A through a unit in front of a station; obtaining a theoretical parking signal point B according to the standard mileage reference point A, measuring a relative distance through a laser range finder so as to determine the measuring position 1 of the parking signal point B, inquiring the nearest CPIII according to the position of the theoretical parking signal point B, subtracting the mileage of the CPIII from the mileage of the theoretical parking signal point B to obtain a distance L', measuring the distance L' on site by using a steel tape so as to determine a measurement position 2 of the parking signal point B, if the measurement error between the position 1 and the position 2 is less than 1M, determining that the position measurement of the parking signal point B is accurate, and finally, taking the measurement position 2 verified by the CPIII as the final position of the parking signal point B. According to the invention, through comparison with the determined position of the laser range finder, the parking signal point is positioned more accurately, and the safety and reliability of high-speed railway driving are realized.

Description

technical field [0001] The invention belongs to the field of high-speed railway design, and in particular relates to a method for measuring a stop signal point of a high-speed railway. Background technique [0002] At present, the railway has become the main travel mode chosen by the Chinese people. There are parking signal points along the high-speed railway line, and at the same time, there are parking points such as arrival signals and departure signals in the station. Each stop signal point has a unique The design mileage is denoted as DKxx+xxx. There is no technical solution that can accurately determine all the parking spots along the high-speed railway in the prior art. Contents of the invention [0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a high-speed railway parking signal point measurement method, by comparing with the determined position of the laser range finder, the parking signal po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/14
CPCG01B11/14
Inventor 王艳辉
Owner 中铁建电气化局集团南方工程有限公司