Displacement detection system and displacement detection method for railway equipment

A displacement detection and railway technology, applied in measuring devices, optical devices, instruments, etc., can solve the problems of unfavorable tunnel settlement, difficult real-time monitoring, and many measuring points, so as to reduce the workload of measurement implementation, shorten the monitoring period, The effect of simplifying the measurement process

Active Publication Date: 2018-04-13
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many monitoring points for tunnel settlement, the light in the tunnel is dark, there are many measuring points, and the refraction is large. Therefore, the traditional measurement method is time-consuming and laborious to measure the settlement, and the measurement error is also large. The measurement period is long, and it is difficult to realize automatic measurement, which is not conducive to the analysis of the tunnel. The settlement situation
[0006] Therefore, the existing problems in the prior art include: the workload of the measurement implementation is heavy, the process is relatively complicated, the monitoring cycle is usually long, it is difficult to realize real-time monitoring, and the measurement error is also relatively large, so as to realize automatic measurement, which is not conducive to the analysis of the settlement of the tunnel

Method used

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  • Displacement detection system and displacement detection method for railway equipment
  • Displacement detection system and displacement detection method for railway equipment
  • Displacement detection system and displacement detection method for railway equipment

Examples

Experimental program
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example 1

[0056] figure 2 A schematic diagram of an arrangement method of the present invention is shown. This arrangement method can be used to measure the vertical displacement of the line (caused by settlement or frost heaving, etc.), without being affected by longitudinal and lateral displacement. The displacement detection system is mainly composed of a photoelectric transmitting and receiving device 1 and a reflecting device 2 . The photoelectric transmitting and receiving device 1 is installed on the CP III column 101, and the CP III column is fixed on a deep foundation, so it can be considered that there will be no displacement, so it can be used as a measurement benchmark for line displacement. The reflection device 2 is installed on the line base plate 102 and the side of the track plate 103 through the column 4 . The reflection device 2 is displaced along with the line, so the displacement of the reflection device 2 is the line displacement. figure 1 A schematic diagram o...

example 2

[0062] image 3 Another arrangement method of the present invention is shown, which can realize the longitudinal displacement measurement of line displacement. image 3 The middle reflection device 2 is a rectangular prism placed horizontally, and the laser and PSD in the photoelectric transmitting and receiving device are placed horizontally. The measurement principle is the same as that of Example 1. At the same time, this example can also be combined with Example 1, and the reflecting device can be changed into two right-angle prisms, one placed horizontally and the other vertically placed, and the photoelectric transmitting and receiving device is configured as two groups of lasers and PSD placed horizontally and vertically, which can be Realize simultaneous measurement of vertical and longitudinal displacement at the same measurement point.

example 3

[0064] Figure 4 It shows a schematic diagram of the arrangement of realizing the displacement monitoring of the subway tunnel by using the device of the present invention. A set of settlement detection devices can be used to realize the settlement detection of one measurement point. In order to realize the settlement monitoring of the entire interval, multiple sets of settlement detection devices can be used to transmit detection to each other. like Figure 4 As shown, the system installs a photoelectric transmitting and receiving device at the reference point of the platform, and installs a reflector and a photoelectric transmitting and receiving device at each measurement point in the interval, so that the photoelectric transmitting and receiving device at the previous point and the reflecting mirror at the next measuring point form a A set of settlement detection devices can monitor the relative displacement between two points. All the detection devices are connected to ...

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Abstract

The invention provides a displacement detection system and a displacement detection method for railway equipment, comprising a photoelectric transmitting and receiving device and at least one reflecting device, the photoelectric transmitting and receiving device includes a main control unit, a laser, a position sensitive element, a reflecting device, a laser and a position sensitive element The number is equal and each reflection device corresponds to a laser and a position sensitive element, the laser is configured so that the laser can be irradiated on its corresponding reflection device, and the position sensitive element is installed to receive the reflection of its corresponding reflection device The main control circuit is configured to control the emission of the laser and receive the displacement signal from the position sensitive element and process the displacement signal to generate the displacement detection result of the reflecting device relative to the photoelectric transmitting and receiving device; the reflecting device is composed of a right angle prism and Install it so that its oblique edge is in the direction of the displacement to be detected. The invention simplifies the measurement process, shortens the monitoring period, realizes real-time monitoring, and reduces errors.

Description

technical field [0001] The invention belongs to the field of railway equipment safety, and in particular relates to line displacement monitoring, in particular to a displacement detection system and a displacement detection method for railway equipment. Background technique [0002] The operational safety of rail transit has high requirements on the service state of the line. The displacement of the line will pose a great threat to the safety of train operation. However, high-speed railway lines are affected by train operation and natural factors during operation, and are prone to displacement and deformation, such as subgrade settlement, line frost heaving in alpine regions, and track slab displacement. Since my country's high-speed railways mostly use ballastless tracks, when the line is deformed, it can only be adjusted through fasteners, and the adjustment range is very limited. When the displacement and deformation of the line are large, it will seriously endanger the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/02
Inventor 王尧朱力强余祖俊
Owner BEIJING JIAOTONG UNIV
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