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Pantograph slide plate wear state detection method based on laser displacement sensor

A pantograph sliding plate, laser displacement technology, applied in instruments, measuring devices, optical devices, etc., can solve the problems of poor camera stability and anti-interference ability, complicated installation, etc., to improve detection accuracy and simple system structure design Effect

Pending Publication Date: 2022-08-09
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method requires the combination of multiple components such as cameras and lasers, and the installation is complicated, and the stability and anti-interference ability of the camera are poor

Method used

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  • Pantograph slide plate wear state detection method based on laser displacement sensor
  • Pantograph slide plate wear state detection method based on laser displacement sensor
  • Pantograph slide plate wear state detection method based on laser displacement sensor

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Embodiment

[0103] combine figure 1 , a method for detecting the wear state of a pantograph slide plate based on a laser displacement sensor of the present invention, comprising the following steps:

[0104] S1: Two sets of laser displacement sensors are installed mirror-symmetrically about the center line of the rail, and the slide plate data is collected vertically downward. The sensor installation is shown as follows figure 2 shown, the test skateboard is as image 3 The specific process is as follows:

[0105] S11: The laser displacement sensor adopts a high-precision and large-range 2D laser displacement sensor, and the Keyence LJ-X8900 sensor is selected;

[0106] S12: Two sets of laser displacement sensors are installed above the contact line, and are mirror-symmetrical about the center line of the track, and the horizontal distance between the laser source points of the two sets of laser displacement sensors is 550mm;

[0107] S13: The laser displacement sensor is installed ve...

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Abstract

The invention discloses a pantograph slide plate wear state detection method based on laser displacement sensors, and the method comprises the steps: two groups of laser displacement sensors are installed in a mirror symmetry manner with respect to the center line of a steel rail, and slide plate data collection is carried out in a vertically downward manner; analyzing the distribution rule of the number of data points output by the sensor, and screening effective data frames; effective data of the two sensors are converted into the same coordinate system through data fusion; interference points are filtered out, and sliding plate contour data points are extracted; carrying out tilt correction on the skateboard contour data; smoothing the skateboard contour by adopting a curve fitting algorithm to obtain an actual skateboard contour; estimating the initial contour of the sliding plate, calculating the actual wear curve of the sliding plate by matching the actual contour of the sliding plate, and finally analyzing the wear state of the sliding plate. The method not only reflects the wear degree of the sliding plate, but also analyzes the state of the sliding plate from the aspects of eccentric wear, groove wear and the like, and has the advantages of high detection speed, high precision, online non-contact measurement and the like.

Description

technical field [0001] The invention belongs to the technical field of urban rail transit intelligent operation and maintenance, in particular to a method for detecting the wear state of a pantograph skateboard based on a laser displacement sensor. Background technique [0002] With the rapid development of urban rail transit, the issue of train online safety has become increasingly prominent. The pantograph skateboard is an important electrical component of the urban rail train, which is used to collect the current from the contact line to provide power for the train. During the operation of the train, the sliding plate is in direct contact with the contact line, and the interaction between the two will lead to continuous wear of the sliding plate. The wear state of the sliding plate has a significant impact on the safe operation of the train. Monitoring is an important measure to ensure the safety of train operation. [0003] The detection of the state of the pantograph ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/00G01B11/24G06K9/62
CPCG01B11/00G01B11/24G06F18/25
Inventor 姚小文宋开华张振宇朱俊霖邢成雷邢宗义盛安冬卢月
Owner NANJING UNIV OF SCI & TECH
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