Metro Vehicle Axle Temperature Monitoring Device Based on Piezoelectric Vibration
International Journal of Transportation Engineering and Technology
Volume 5, Issue 4, December 2019, Pages: 88-91
Received: Dec. 8, 2019; Published: Dec. 9, 2019
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Authors
Yiyun Zhao, College of Urban Railway Transportation, Shanghai University of Engineering Science, Shanghai, China
Ruyan Huang, College of Urban Railway Transportation, Shanghai University of Engineering Science, Shanghai, China
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Abstract
The axle temperature monitoring of subway vehicles is a key technology to ensure the safety of trains. The existing axle temperature monitoring system is monitored by using trackside equipment or using axle temperature test paper, the system has the inferiority of poor real-time performance. In order to realize real-time and online monitoring of axle temperature, this paper presents a subway axle temperature monitoring device based on vibration energy recovery. The device is installed on the shaft end of the train axle, and uses the positive piezoelectric effect of piezoelectric ceramics to absorb vibration energy into electric energy, and continuously sends temperature signal through the radio frequency module to realize real-time monitoring of train axle temperature. A mathematical model of piezoelectric vibrator power output was established to obtain design parameters suitable for rail vehicle vibration, and the Ansys Workbench finite element analysis software was used for theoretical simulation verification. Finally, an experimental model was built and a vibration test was carried out on Shanghai metro line 1. The results show that the axial temperature monitoring device based on piezoelectric vibration can effectively obtain the axial temperature data and realize the online monitoring function.
Keywords
Axial Temperature Monitoring, Energy Recovery, Piezoelectric Ceramics, Finite Element Analysis
To cite this article
Yiyun Zhao, Ruyan Huang, Metro Vehicle Axle Temperature Monitoring Device Based on Piezoelectric Vibration, International Journal of Transportation Engineering and Technology. Vol. 5, No. 4, 2019, pp. 88-91. doi: 10.11648/j.ijtet.20190504.14
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