Opto-Mechatronics System for Train-Track Micro Deformation Sensing
In this paper, we proposed and experimentally demonstrated an opto-mechatronics system to detect the micro-deformation of tracks caused by running trains. The fiber Bragg grating (FBG) array acting as sensing elements has a low peak reflectivity of around −40 dB. The center wavelengths were designed...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-12-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/22/1/296 |
| _version_ | 1827667572801142784 |
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| author | Weibing Gan Shiyu Tu Yuan Tao Lingyun Ai Cui Zhang Jianguan Tang |
| author_facet | Weibing Gan Shiyu Tu Yuan Tao Lingyun Ai Cui Zhang Jianguan Tang |
| author_sort | Weibing Gan |
| collection | DOAJ |
| description | In this paper, we proposed and experimentally demonstrated an opto-mechatronics system to detect the micro-deformation of tracks caused by running trains. The fiber Bragg grating (FBG) array acting as sensing elements has a low peak reflectivity of around −40 dB. The center wavelengths were designed to alternate between 1551 nm and 1553 nm at 25 °C. Based on dual-wavelength, wavelength-division multiplexing (WDM)/time-division multiplexing (TDM) hybrid networking, we adopted optical time-domain reflectometry (OTDR) technology and a wavelength-scanning interrogation method to achieve FBG array signal demodulation. The field experimental results showed that the average wavelength shift of the FBG array caused by the passage of the lightest rail vehicle was −225 pm. Characteristics of the train-track system, such as track occupancy, train length, number of wheels, train speed, direction, and loading can be accurately obtained in real time. This opto-mechatronics system can meet the requirements of 600 mm spatial resolution, long distance, and large capacity for monitoring the train-track system. This method exhibits great potential for applications in large-scale train-track monitoring, which is meaningful for the safe operation of rail transport. |
| first_indexed | 2024-03-10T03:21:10Z |
| format | Article |
| id | doaj.art-78b0fe83013b41ba8eb520a407bfa592 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T03:21:10Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-78b0fe83013b41ba8eb520a407bfa5922023-11-23T12:20:07ZengMDPI AGSensors1424-82202021-12-0122129610.3390/s22010296Opto-Mechatronics System for Train-Track Micro Deformation SensingWeibing Gan0Shiyu Tu1Yuan Tao2Lingyun Ai3Cui Zhang4Jianguan Tang5National Engineering Laboratory for Fiber Optic Sensing Technology, Wuhan University of Technology, Wuhan 430070, ChinaSchool of Information Engineering, Wuhan University of Technology, Wuhan 430070, ChinaNational Engineering Laboratory for Fiber Optic Sensing Technology, Wuhan University of Technology, Wuhan 430070, ChinaNational Engineering Laboratory for Fiber Optic Sensing Technology, Wuhan University of Technology, Wuhan 430070, ChinaNational Engineering Laboratory for Fiber Optic Sensing Technology, Wuhan University of Technology, Wuhan 430070, ChinaNational Engineering Laboratory for Fiber Optic Sensing Technology, Wuhan University of Technology, Wuhan 430070, ChinaIn this paper, we proposed and experimentally demonstrated an opto-mechatronics system to detect the micro-deformation of tracks caused by running trains. The fiber Bragg grating (FBG) array acting as sensing elements has a low peak reflectivity of around −40 dB. The center wavelengths were designed to alternate between 1551 nm and 1553 nm at 25 °C. Based on dual-wavelength, wavelength-division multiplexing (WDM)/time-division multiplexing (TDM) hybrid networking, we adopted optical time-domain reflectometry (OTDR) technology and a wavelength-scanning interrogation method to achieve FBG array signal demodulation. The field experimental results showed that the average wavelength shift of the FBG array caused by the passage of the lightest rail vehicle was −225 pm. Characteristics of the train-track system, such as track occupancy, train length, number of wheels, train speed, direction, and loading can be accurately obtained in real time. This opto-mechatronics system can meet the requirements of 600 mm spatial resolution, long distance, and large capacity for monitoring the train-track system. This method exhibits great potential for applications in large-scale train-track monitoring, which is meaningful for the safe operation of rail transport.https://www.mdpi.com/1424-8220/22/1/296low-reflectivity fiber Bragg grating arrayWDM/TDM hybrid networkingopto-mechatronics technologytrain-track systemmicro deformation |
| spellingShingle | Weibing Gan Shiyu Tu Yuan Tao Lingyun Ai Cui Zhang Jianguan Tang Opto-Mechatronics System for Train-Track Micro Deformation Sensing Sensors low-reflectivity fiber Bragg grating array WDM/TDM hybrid networking opto-mechatronics technology train-track system micro deformation |
| title | Opto-Mechatronics System for Train-Track Micro Deformation Sensing |
| title_full | Opto-Mechatronics System for Train-Track Micro Deformation Sensing |
| title_fullStr | Opto-Mechatronics System for Train-Track Micro Deformation Sensing |
| title_full_unstemmed | Opto-Mechatronics System for Train-Track Micro Deformation Sensing |
| title_short | Opto-Mechatronics System for Train-Track Micro Deformation Sensing |
| title_sort | opto mechatronics system for train track micro deformation sensing |
| topic | low-reflectivity fiber Bragg grating array WDM/TDM hybrid networking opto-mechatronics technology train-track system micro deformation |
| url | https://www.mdpi.com/1424-8220/22/1/296 |
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