Based on fiber sensor network rail transit IoT monitoring system

• Autorzy: Liu Zhao , Wang Yifang , Hou Yingjuan , Yu Chunrong

Identyfikatory

DOI

10.37190/oa/196289

• Języki publikacji: EN

Abstrakty

EN

In the process of train operation, the status information directly reflects the degree of safety of the operation. Online health monitoring and completion of train status assessment are important signs of train intelligent control. To obtain the stress field distribution of the support position (bearing area) of the train, proposed a EMU health monitoring and intelligent state assessment system based on fiber sensing internet of things (FS-IoT). The system adopts the method of combining multiple sensitized FBG sensors into a sensing network to obtain the stress field distribution at the measured location. When the train is faulty or the external environment affects the train’s operation, the stress field and vibration field on the train’s motion components will change significantly. Obtain real-time physical field information of sensitive locations through the FBG sensor array, which can realize online monitoring of train status. A distributed combinatorial optimization algorithm based on FS-IoT was designed, and the weight distribution of FBG test data at different locations on the inversion results was analyzed based on data mining. In the sensitization FBG testing experiment, under the same stress conditions, the sensitivity increased from 12.440 to49.935 pm/kN, and had good linearity. In dynamic testing, when the test carriage passes through the rail connection, there will be significant fluctuations in the center wavelength of the FBG, with a maximum wavelength offset of 2530.2 pm. The peak-to-peak values of the two test data are basically the same, indicating that stress changes can be inverted by the peak position. Finally, a trainstate inversion model based on FBG sensing network and a system framework for intelligent state evaluation are presented, providing new design ideas for train state monitoring.

Słowa kluczowe

EN

fiber sensing internet of things; FS-IoT; fiber Bragg grating; FBG; health monitoring; state; assessment; electric multiple units; EMU

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2025
• Tom: Vol. 55, nr 1
• Strony: 5--17
• Opis fizyczny: Bibliogr. 21 poz., rys., tab.

Twórcy

autor

Liu Zhao

• Department of Computer Science and Engineering, Cangzhou Normal University, Cangzhou, 061600, Hebei, China

autor

Wang Yifang

• Department of Computer Science and Engineering, Cangzhou Normal University, Cangzhou, 061600, Hebei, China

autor

Hou Yingjuan

• China Helicopter Research and Development Institute, Tianjin, 300011, China

autor

Yu Chunrong

• China Helicopter Research and Development Institute, Tianjin, 300011, China

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