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Dynamic measurement method of geometric parameters of overhead contact system

A technology for geometric parameter and dynamic measurement, applied in measurement devices, instruments, and optical devices, etc., can solve the problems of inability to obtain contact line state parameters, affecting the safety of passenger cars, and personnel fatigue, and improve detection accuracy, efficiency, and price. Inexpensive and accident-reducing effect

Inactive Publication Date: 2015-07-01
INST OF SCI & TECH SHANGHAI RAILWAYBUREAU
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  • Application Information

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Problems solved by technology

This method has low efficiency and heavy tasks. Long-term nighttime skylight operation causes personnel fatigue, and continuous contact line state parameters cannot be obtained. Therefore, it is difficult to effectively observe the trend change of the railway contact line and maintain it in time. This method is no longer possible. Fully meet the requirements of frequent use of today's railway lines, seriously affecting the safety of passenger trains

Method used

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  • Dynamic measurement method of geometric parameters of overhead contact system
  • Dynamic measurement method of geometric parameters of overhead contact system
  • Dynamic measurement method of geometric parameters of overhead contact system

Examples

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Embodiment

[0022] Example: such as figure 1 As shown, the method for dynamic measurement of catenary geometric parameters in this embodiment involves a mobile trolley. The car body 6 of the mobile trolley has wheels 11, the wheels 11 are erected on the rails and can move along the laying direction of the rails, above the rails is the catenary to be measured. The body of the mobile car is equipped with a right line camera 1 and a left line camera 3, and the array cameras are symmetrically distributed on both sides with the line laser 2 as the center of symmetry, and the shooting lines of the two cameras coincide with the laser band emitted by the laser. The beam emitting surface of the line laser 2 faces the catenary to be measured, and the irradiation surfaces of the two line array cameras are also aimed at the catenary.

[0023] The mileage encoder 5 at the left wheel of the mobile trolley body 6 outputs pulse signals according to the travel distance of the wheels 10, and provides the ...

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Abstract

The invention relates to the field of rail traffic detection, in particular to a dynamic measurement method of geometric parameters of an overhead contact system. A trolley is disposed on a steel rail and can move along the same. Linear array cameras and a linear laser are disposed on a body of the trolley; a light-emitting face of the linear laser is aligned to the overhead contact system to be measured; the linear array cameras are disposed on two sides of the linear laser; the emitting face of each linear array camera is aligned to face the overhead contact system; after the trolley is pushed and the linear array cameras are started, the linear array cameras are enabled to continuously shoot the overhead contact system to acquire image data along with movement of the trolley on the steel rail; images of the overhead contact system are analyzed and processed according to the technical principle of trigonometric stereo measurement. The method allows geometric parameters and wear of the overhead contact system and the safety state of hangers of the overhead contact system can be dynamically detected continuously and precisely in real time.

Description

technical field [0001] The invention relates to the field of rail transit detection, in particular to a dynamic measurement method for catenary geometric parameters capable of measuring catenary geometric parameters, wear and suspension device safety status. Background technique [0002] In recent years, with the rapid development of my country's national economy, the railway industry has also achieved unprecedented development. Under the background of the rapid increase of railway speed, the safety of traffic has been paid more and more attention and has become an important issue of railway operation. The safety of the operation process of the railway traction power supply system, the reliability of the equipment and the timeliness of troubleshooting are important guarantees for the safe operation of the entire railway system. The catenary is the most direct part of the traction power supply system to provide electric energy to the locomotive, and its status directly affec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/00
Inventor 朱挺吴立群方火根
Owner INST OF SCI & TECH SHANGHAI RAILWAYBUREAU
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