Pantograph comprehensive geometric parameter online detection equipment and method based on laser projection

Abstract

The invention provides a pantograph comprehensive geometric parameter online detection device and method based on laser projection. The equipment is simple in structure, fast in detection rhythm, high in efficiency, high in anti-jamming capability, high in precision, capable of effectively achieving train pantograph comprehensive geometric parameter online detection and good in reliability. The equipment comprises a pantograph-catenary system, the pantograph-catenary system comprises a catenary and a pantograph which are in contact with each other, and the pantograph-catenary system further comprises a driving-in detection module, a data acquisition module and a data processing module which are connected in sequence; the driving-in detection module is used for acquiring a train driving-in signal when a train drives into a detection area and sending the train driving-in signal to the data acquisition module; the data acquisition module is used for acquiring a pantograph image when a train driving-in signal is received, and sending the acquired pantograph image to the data processing module; and the data processing module is used for processing the received pantograph image to obtain geometric parameter data on the pantograph.

Description

technical field [0001] The invention relates to the technical field of rail transit, in particular to an online detection device and method for pantograph comprehensive geometric parameters based on laser projection. Background technique [0002] The pantograph is an electrical device for an electric traction locomotive to obtain electrical energy from the catenary, and is installed on the roof of the locomotive. The pantograph obtains power from the catenary to supply power to the entire train electrical system. At the same time, the train’s regenerative braking system converts the kinetic energy of the train into electrical energy and feeds it back to the catenary for other online trains to use, playing the role of a two-way transmission hub. [0003] When the locomotive is running, the upper surface of the pantograph slide is in contact with the catenary, and wear will inevitably occur after long-term operation. Therefore, regular wear testing of the pantograph slide is n...

AI Technical Summary

Problems solved by technology

[0003] When the locomotive is running, the upper surface of the pantograph slide is in contact with the catenary, and wear will inevitably occur after long-term operation. Therefore, regular wear testing of the pantograph slide is necessary; in addition, the contact points between the contact wire and the pantograph and the pantograph The distance between the centers is constantly changing with the fast running of the train. When the center line deviates excessively, the pantograph will be separated from the contact wire, resulting in serious pantograph-catenary accidents; therefore, in order to avoid accidents caused by the failure of the train itself, Monitoring the condition of key components of train pantographs is essential

[0004] The traditional detection method for the thickness of the skateboard is that the staff use a vernier caliper to measure the thickness of the skateboard, and for the detection of the center line offset, the staff uses a measuring tool such as a tape measure to measure the center line offset; but the above detection method is not only not accurate. , there are few detection points, and it is necessary to cut off the power to the catenary, so that the static detection operation after the train is out of service is relatively inefficient, and the operation process is time-consuming and laborious, and the detection results cannot cover all bow thicknesses, resulting in poor accuracy. It requires high-level and electric-related operations, and there are certain safety hazards

[0005] In addition, there is a method based on the natural imaging method of multiple independent cameras to realize the wear detection of the pantograph slide and the offset of the center line, but it requires a background whiteboard and many lighting devices. Thunderstorms at night (extreme weather, etc.) have a lot of interference, which leads to low accuracy and poor reliability of measurement results

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