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LIU Ziying, ZHANG Jing, DENG Fangming. Research of on-line monitoring of rail distance system based on position sensitive detector[J]. LASER TECHNOLOGY, 2020, 44(2): 183-189. DOI: 10.7510/jgjs.issn.1001-3806.2020.02.008
Citation: LIU Ziying, ZHANG Jing, DENG Fangming. Research of on-line monitoring of rail distance system based on position sensitive detector[J]. LASER TECHNOLOGY, 2020, 44(2): 183-189. DOI: 10.7510/jgjs.issn.1001-3806.2020.02.008
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Research of on-line monitoring of rail distance system based on position sensitive detector

  • School of Electrical and Automation Engineering, East China Jiaotong University, Nanchang 330013, China

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  • Received Date: November 15, 2018
  • Revised Date: May 15, 2019
  • Published Date: March 24, 2020
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    • Abstract
  • In order to know the variation of rail gauge in real time, a real-time on-line gauge monitoring system was developed. Position sensitive detector and laser emitter was used as measuring elements for real-time acquisition of gauge change information. Mathematical model was established to calculate the offset of the gauge. The offset of two rails after moving was calculated by the combination algorithm. The position sensitive detector was compensated by quadratic interpolation algorithm to improve the accuracy and accuracy of position sensitive detector. The gauge change information in certain area was sent to the monitoring center for display by using controller area network bus and general packet radio service communication technology. The same simulation track was measured by the existing two-stage gauge gauge. The results show that, measurement accuracy of the system is 0.32mm. It meets the precision requirement of 1mm stipulated by track inspection industry at present.
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    • References (23)
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