High-speed train bogie fault detection method based on multi-sensor data fusion

A data fusion, high-speed train technology, applied in the direction of railway vehicle testing, etc., can solve the problems of manual selection of reliable channels, complicated process of bogie vibration signal characteristics, unstable signal characteristics extracted, etc., and achieve simple process of bogie vibration signal characteristics. Efficiency, Maintain Accuracy, Increase Variety Effects

Active Publication Date: 2021-03-16
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology

[0005] Aiming at the above-mentioned deficiencies in the prior art, the high-speed train bogie fault detection method based on multi-sensor data fusion provided by the present invention solves the problem that the process of extracting bogie vibration signal characteristics in the existing fault detection method is complex and the extracted signal characteristics are unstable. , the problem of manually selecting reliable channels

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  • High-speed train bogie fault detection method based on multi-sensor data fusion
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  • High-speed train bogie fault detection method based on multi-sensor data fusion

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Embodiment Construction

[0042] 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.

[0043] Such as Figure 1 to Figure 3 As shown, the high-speed train fault detection method based on multi-sensor data fusion includes the following steps:

[0044] S1. Collect raw data signals obtained by multiple sensors installed on the bogie; wherein, the raw data signals obtained by the multiple sensors correspond to vibration signals at different positions and directions on the bogie.

[0045] S2. Segment the collecte...

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Abstract

The invention discloses a high-speed train bogie fault detection method based on multi-sensor data fusion. The detection method comprises the steps that S1 original data signals acquired by a number of sensors arranged on a bogie are collected; S2 the collected original data signals are divided into separate signals of each channel; S3 a spectrum map corresponding to the signals of each channel isgenerated; S4 the classification result of the spectrum map of each channel is acquired through a random forest algorithm; and S5 a voting method is used to merge the classification results of all channel spectrum maps to acquire the fault type. The method provided by the invention has the advantages that the process of extracting the features of bogie vibration signals is simple and efficient, and the accuracy of fault detection is greatly improved through an automatic multi-channel fusion method.

Description

technical field [0001] The invention belongs to the field of train fault detection, in particular to a high-speed train bogie fault detection method based on multi-sensor data fusion. Background technique [0002] In recent years, with the continuous increase of the operating mileage of my country's railways and the gradual increase of train speed, the transportation needs of the society have been gradually met. At the same time, people's safety requirements for high-speed train transportation are also increasing. In this context, more and more research is focused on the fault diagnosis of high-speed trains. The bogie is the only connection unit between the train body and the track, and the deterioration of its key components will seriously threaten the safety of train operation. Therefore, high-speed train bogie fault detection has important research significance. [0003] The high-speed train bogie structure mainly includes two sets of wheelsets, frame, braking device an...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M17/08
CPCG01M17/08
Inventor 粟丽源秦娜马磊黄德青孙永奎
Owner SOUTHWEST JIAOTONG UNIV
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