A Digitalization Algorithm Based on the Voltage Waveform of the Multifunction Vehicle Bus

Author:

Li Yangtao1,Liang Haiquan2ORCID,Tan Xiaodong2

Affiliation:

1. State Key Laboratory for Traction and Control System of EMU and Locomotive, China Academy of Railway Sciences Corporation Limited, Beijing 100191, China

2. Institute of Rail Transit, Tongji University, Shanghai 200092, China

Abstract

The MVB is a kind of widely used vehicle-level bus, which is crucial for the normal operation of trains. However, the MVB bus contains device node terminals and the topology is complex, which makes fault location difficult. The voltage waveform of the MVB physical layer can reflect the electrical characteristics and fault characteristics of a network in real time and has the value of assisting the diagnosis of MVB network faults. Based on the characteristics of the MVB physical-layer voltage waveform, this paper studies the optimal sampling rate and feature-extraction algorithm of the MVB voltage waveform and the combination of the data of the data-link layer to assign accurate timestamps to waveform data, and finally presents a design for an MVB dual-mode data-acquisition platform with multiple sampling rates/test conditions. Experimental results show that the proposed algorithm can accurately extract waveform feature information under the optimal sampling rate of 62.5 MHz, which makes the collection of MVB voltage waveform data more reliable and practical.

Funder

State Key Laboratory for Traction and Control System of EMU and Locomotive

Publisher

MDPI AG

Subject

Fluid Flow and Transfer Processes,Computer Science Applications,Process Chemistry and Technology,General Engineering,Instrumentation,General Materials Science

Reference16 articles.

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2. Güldiken, M.C., Schmidt, E.G., and Schmidt, K.W. (2020, January 7–10). Telegram Scheduling for the Multifunction Vehicle Bus (MVB): Algorithms and Evaluation. Proceedings of the 25th IEEE Symposium on Computers and Communications (ISCC), Rennes, France.

3. Guldiken, M., Schmidt, E.G., and Schmidt, K.W. (2020, January 5–7). Heuristic Algorithms for the Telegram Scheduling on MVB. Proceedings of the 28th Signal Processing and Communications Applications Conference (SIU), Gaziantep, Turkey.

4. (2012). Electronic Railway Equipment—Train Communication Network (TCN)—Part 3-1: Multifunction Vehicle Bus (MVB) (Standard No. IEC 61375-3-1:2012).

5. Chen, H.R., and Qian, C.Y. (2020, January 20–22). Research on Functional Safety of Multifunction Vehicle Bus in Rail Transit. Proceedings of the IEEE International Conference on Artificial Intelligence and Information Systems (ICAIIS), Dalian, China.

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