A method for sensing the operating environment of EMUs based on pantograph-catenary video
A technology of operating environment and EMU, applied in the field of rail transit, to achieve the effect of improving reliability, ensuring driving safety, and improving accuracy
Active Publication Date: 2021-11-23
TONGJI UNIV
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Problems solved by technology
[0003] The invention provides a pantograph-catenary video-based EMU operation environment perception method, which realizes the perception and identification of the surrounding environment during the operation of the EMU, and solves the problems caused by the environmental changes on the EMU operation line to pantograph-catenary arc detection. Improve the accuracy of arc detection, improve the reliability of the system, and ensure driving safety
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Embodiment 1
[0059] In this embodiment, a pantograph-catenary video-based EMU operating environment perception method is provided, figure 1 It is a flowchart of a pantograph-catenary video-based EMU operating environment perception method according to an embodiment of the present invention, such as figure 1 As shown, the flowchart includes the following steps:
[0060] Step S11, collecting pantograph-catenary video data of the EMU during operation;
[0061] Step S12, decomposing the pantograph-catenary video into time-arranged image sets;
[0062] Step S13, extracting the environmental features of each image, and converting the image set into a time series about the environmental features;
[0063] Step S14, smoothing the converted time series by using a sliding window method;
[0064] Step S15, based on the TD algorithm, determine a single change interval set according to the time series;
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The invention provides a pantograph-catenary video-based EMU operation environment perception method, wherein the method includes collecting pantograph-catenary video data during the operation of the EMU; decomposing the pantograph-catenary video into time-arranged image sets; extracting The environmental characteristics of each image, transform the image set into a time series of environmental characteristics; use the sliding window method to smooth the converted time series; based on the TD algorithm, determine the set of single change intervals according to the time series; based on The inter-class variance algorithm determines the environmental segmentation point in each single change interval to realize the division of the operating environment. Through this invention, the environment during the operation of the EMU can be sensed and identified, which solves the impact of the complex environment during the operation of the EMU on pantograph-catenary arc detection, improves the accuracy of arc detection, improves the reliability of the system, and ensures driving safety.
Description
technical field [0001] The invention relates to the field of rail transit, in particular to a pantograph-catenary video-based EMU operating environment perception method. Background technique [0002] The pantograph-catenary system of high-speed EMUs is a system composed of pantograph and catenary in material combination, electrical and mechanical coupling (referred to as pantograph-catenary system). The pantograph-catenary system is the most critical and vulnerable part of the traction power supply of modern railways. As the only way for high-speed EMUs to obtain electric energy, it is responsible for the important task of transmitting the electric energy in the traction network to the trains. Due to the complex mechanical and electrical interactions between the pantograph-catenary systems, once pantograph-catenary arcs occur, the safe operation of the train will be seriously affected. Therefore, it is particularly important to maintain the safe and reliable operation of th...
Claims
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IPC IPC(8): G06K9/00G06K9/32
CPCG06V20/52G06V20/56G06V10/25
Inventor 黄世泽余亮亮陈威郭其一
Owner TONGJI UNIV