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Track circuit transmission characteristic quantitative evaluation method based on variational mode decomposition

A technology of variational mode decomposition and track circuit, which is applied in the direction of measuring electrical variables, measuring electricity, and measuring devices, can solve problems such as inaccurate evaluation results of track circuit transmission characteristics, improve analysis efficiency, reduce misjudgment, overcome Effects of Mode Aliasing and Frequency Effects

Active Publication Date: 2019-12-03
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology

[0006] In view of the above-mentioned deficiencies in the prior art, the present invention provides a quantitative evaluation method for transmission characteristics of track circuits based on variational mode decomposition, which solves the problem of inaccurate evaluation results of transmission characteristics of track circuits

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  • Track circuit transmission characteristic quantitative evaluation method based on variational mode decomposition
  • Track circuit transmission characteristic quantitative evaluation method based on variational mode decomposition
  • Track circuit transmission characteristic quantitative evaluation method based on variational mode decomposition

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Embodiment Construction

[0050] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.

[0051] Such as figure 1 As shown, a quantitative evaluation method for transmission characteristics of track circuits based on variational mode decomposition includes the following steps:

[0052] S1. Collect the induction signal of the track circuit of the locomotive or the moving inspection car, and divide it into frequency shift induction signals of multiple track circuit sections according to the carrier frequency alter...

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Abstract

The invention discloses a track circuit transmission characteristic quantitative evaluation method based on variational mode decomposition. According to the method, locomotive signals or track circuitinduction signals of a dynamic inspection vehicle are collected, transmission characteristics of a track circuit are obtained by using processing methods such as variational mode decomposition and the like, and then the transmission characteristics of the track circuit of each track section of the line are scored by an adaptive scoring function, so that visual quantitative evaluation of the transmission characteristics of the track circuit is completed. The method is good in applicability, and can meet the requirements for evaluating the transmission characteristic performance of the track circuit at present.

Description

technical field [0001] The invention relates to the technical field of railway track detection and maintenance, in particular to a quantitative evaluation method for transmission characteristics of track circuits based on variational mode decomposition. Background technique [0002] The track circuit uses two steel rails as conductors to transmit frequency-shifting signals, laying compensation capacitors evenly in the middle, adding insulating joints at both ends, and connecting the sending equipment and receiving equipment through cables to form an electrical circuit. It has the functions of reflecting train occupancy, transmitting traffic information and detecting rail integrity, and is one of the key equipment of train operation control system. [0003] The operating environment of the outdoor part of the track circuit is complex. Factors such as ballast bed, sleeper material, compensation capacitance, temperature, humidity and other factors may affect the transmission qu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62G06Q10/00G06Q10/06G06Q50/30G01R31/08
CPCG06Q10/0639G06Q10/20G01R31/086G01R31/088G06F18/2134G06F18/23G06Q50/40
Inventor 王小敏杨璟王晓东张文芳
Owner SOUTHWEST JIAOTONG UNIV
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