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Contact network lead-wire wear measurement method and device based on multi-channel cameras

A measurement method and catenary technology, applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems of rigid suspension busbars without elasticity, large contact line wear, and large impulse, so that the wear situation can be monitored more intuitively, Easy to expand, convenient for timely feedback on the effect of maintenance and replacement

Active Publication Date: 2019-01-25
CHENGDU TANGYUAN ELECTRICAL APPLIANCE
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AI Technical Summary

Problems solved by technology

The rigid suspension busbar has no elasticity and is used to counteract the lifting force of the pantograph. It suddenly appears with the lifting force of the pantograph on the contact suspension, so that the impulse of the pantograph lifting force to the contact suspension is relatively large. Thus the wear of the contact wire is greater

Method used

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  • Contact network lead-wire wear measurement method and device based on multi-channel cameras
  • Contact network lead-wire wear measurement method and device based on multi-channel cameras
  • Contact network lead-wire wear measurement method and device based on multi-channel cameras

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Embodiment 1

[0059] Embodiment 1: A method for measuring the wear of catenary wires based on multi-channel cameras includes:

[0060] Step 1 (image acquisition step): n road cameras correspondingly collect n pieces of catenary wire images including the bottom of the catenary wire located in different pull-out value ranges;

[0061] Among them, the number of image acquisition cameras n is determined according to the range of the pull-out value of the contact line; the principle of determining the number of cameras is that n*D is greater than or equal to the maximum pull-out value range of the line contact line; where D is the maximum visible pull-out value range of a single camera ; The n-way cameras are installed on the roof of the detection train in parallel and perpendicular to the direction of the catenary wire. The installation method is as follows: Figure 4 Expand as shown. Where n is greater than or equal to 2, the n image acquisition cameras are distributed along a straight line pe...

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Abstract

The invention relates to the field of contact network rigid-lead-wire measurement of subway systems in urban rail transit, and particularly to a contact network lead-wire wear measurement method and device based on multi-channel cameras. In a solution, the n-channel cameras correspondingly collect n contact network lead-wire images of bottoms of contact network lead-wires in different pull-out value interval ranges; p maximum communicated lead-wire areas including L1, L2 and L3, p boundary positions E1 and p boundary positions E2 are correspondingly separated from the n contact network lead-wire images; p threshold images T(x, y) are obtained on the basis of threshold processing of the n maximum communicated lead-wire areas; the p threshold images T(x, y) are respectively and correspondingly combined with the p boundary positions E1 and the p boundary positions E2 according to the characteristics of the communicated areas to obtain p pieces of position information of L1, L2, and L3; same-contact-network lead-wire position information is fused for obtaining position information of optimum L1, L2 and L3; and position information of optimum L2 is utilized for calculating lead-wire wear values d.

Description

technical field [0001] The invention relates to the field of metro system catenary rigid wire measurement in urban rail transit, in particular to a multi-camera-based catenary wire wear measurement method and device. Background technique [0002] In the electrified railway, the electric locomotive obtains electric energy from the catenary through the pantograph, and the contact line is deformed, vibrated and caused alternating stress changes, locomotive running mode, current intake state and other factors to wear the contact line, when the wear surface When it reaches a certain level, it will lead to disconnection. [0003] During the running of the train, the current is taken through the sliding contact between the pantograph slide plate and the contact wire. To make the pantograph receive current well, it is necessary to ensure reliable contact between the pantograph slide plate and the contact wire, which requires a certain contact pressure between the pantograph and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/02
CPCG01B11/022
Inventor 彭博李想曹伟
Owner CHENGDU TANGYUAN ELECTRICAL APPLIANCE
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