A non-intrusive real-time dynamic monitoring method for external power receiving devices of intelligent trains

Abstract

The invention discloses a non-intrusive real-time dynamic monitoring method for an external power receiving device of an intelligent train, which includes: obtaining the original current signal of the pantograph and performing preprocessing to obtain a plurality of original data vectors; performing wavelet packet decomposition on the original data vectors , extract feature quantities from each obtained sub-band and construct feature vectors; use feature vectors and pantograph fault classification marks as input and output data respectively, and train fault identification and prediction models; use original data vectors and fault types as input Output data and train the fault identification model; process the real-time current signal of the pantograph according to the aforementioned method to obtain the original data vector and eigenvector, and the fault identification and prediction model predicts the fault of the pantograph according to the eigenvector. If there is a fault, The fault recognition model recognizes the fault type of the pantograph according to the original data vector. The invention realizes the real-time on-line monitoring and fault type identification of the pantograph under the running state of the train.

Description

technical field [0001] The invention relates to the field of fault identification, in particular to a non-invasive real-time dynamic monitoring method for an external power receiving device of an intelligent train. Background technique [0002] With the acceleration of my country's urbanization process and the rapid development of economic construction, people's requirements for comfort, convenience and safety during travel are getting higher and higher. In the field of rail transit, the concept of intelligent trains will play an extremely important role in alleviating the traffic pressure between cities in the future, increasing the comfort and reliability of high-speed trains, and improving the service level of the railway industry. Among them, the external current-receiving equipment of the train is currently the common train pantograph, and its stable operation and safety diagnosis are of great significance for the realization of intelligent trains. [0003] The fault t...

AI Technical Summary

Problems solved by technology

[0004] (1) Pantograph fault diagnosis based on image recognition, but this method cannot realize pantograph crack diagnosis under train running state, and is easily affected by obstructions and installation angles of view;

[0005] (2) Fault diagnosis based on ground equipment, but this method needs to arrange various hardware devices such as sensors along the road network, which is costly, and pantograph fault diagnosis can only be realized in the corresponding road section;

[0006] (3) Fault diagnosis based on the analysis of pantograph vibration characteristics, but this method needs to install external equipment to realize fault diagnosis, and the recognition accuracy is low, and there are few types of faults that can be identified

Images