Railway overhead line system measuring method and overhead line system measuring system based on radar system
A radar system and measurement method technology, applied in radio wave measurement systems, measurement devices, electromagnetic measurement devices, etc., can solve problems such as very sensitive pointing errors, poor environmental adaptability, and limited range of optical image detection, and achieve convenient operation and deployment. , the effect of high measurement accuracy, high efficiency and real-time performance
Active Publication Date: 2021-08-13
NAT UNIV OF DEFENSE TECH
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Problems solved by technology
Among them, infrared thermal imaging detectors cannot precisely measure geometric deformation, optical image detection has a limited range, and laser scanners are very sensitive to pointing errors caused by vehicle movement. In addition, these non-contact measurement methods are affected by harsh weather conditions such as light, rain, snow, dust and fog. The impact of poor environmental adaptability
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[0055] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.
[0056] Such as Figure 1-2 As shown, a radar system-based railway catenary measurement method is provided, which is applied to the catenary measurement system. The catenary measurement system includes a master radar, a slave radar, and a master control device that communicate with each other. The master radar and the slave radar are respectively Distributed on both sides of the railway, and the connection between the two is perpendicular to the center line of the railway.
[0057] The railway catenary measurement method specifically includes the following steps:
[0058]...
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The invention relates to a railway overhead line system measuring method and an overhead line system measuring system based on a radar system, and the method is applied to the catenary measuring system comprising a master radar, a slave radar and a master control device which communicate with each other. The method comprises: the master control device controlling the two radars to work synchronously, acquiring radar echoes of the same target at the same moment and at different visual angles, performing pulse compression, then identifying a wave crest position of a contact network in a pulse compression image, then performing interference processing on wave crest complex scattering data by using a time difference interference technology, and respectively obtaining displacement amounts of the contact network relative to two radars; then obtaining guide height deformation and pull-out value deformation of the overhead line system by solving the two-dimensional equation, and finally estimating the mechanical parameters of the overhead line system through spectral analysis of the guide height and the pull-out value. The method has the advantages of remote non-contact, high measurement precision, high efficiency, strong real-time performance, convenience in operation and deployment and the like.
Description
technical field [0001] The present application relates to the technical field of radar detection, in particular to a radar system-based railway catenary measurement method and a catenary measurement system. Background technique [0002] The pantograph-catenary system composed of the railway catenary and the pantograph on the top of the locomotive is one of the key equipment in the railway system. The catenary is a transmission line erected in a "zigzag" shape along the top of the rail to provide the locomotive with the energy required for high-speed driving . The quality of the catenary directly affects the current receiving performance of the pantograph and the safety of train operation. Due to the open-air layout of the catenary along the railway, the working environment is harsh, the traction (load) current changes greatly during operation, and the car body vibrates violently, which makes the geometry of the catenary Parameters and electrical parameters are in complex dy...
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IPC IPC(8): G01S7/41G01B7/02G01B7/16G01L5/00
CPCG01B7/02G01B7/16G01L5/00G01S7/41
Inventor 王建毕钡桢华洋晟苏琦斌黄晓涛周智敏
Owner NAT UNIV OF DEFENSE TECH