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Improvement of RTL system for location monitoring of multi-laborers in the underground space

지하공간에서 노무자의 위치 인식을 위한 RTL 시스템 개선

  • Received : 2016.05.18
  • Accepted : 2016.05.30
  • Published : 2016.05.31

Abstract

Real time location (RTL) system which can control the safety of laborers in the underground space is developed in this study. This innovative system can monitor the location and history of movement of multiple laborers in real time. To accommodate constrains of the underground space, the system is portable and composed with low-battery mode. Since conventional method to detect the location of laborer with radio signal strength indicator (RSSI) contains high errors, new measurement system using accelerometers and correction method are suggested in this study. Field test is performed to validate the developed system. The error for moving laborer was 0.4 m and for non-moving laborers was 0.2 m. Thus, it is found that the new RTL system can be used to monitor the location of laborers in the underground construction space.

Acknowledgement

Supported by : 국토교통과학기술진흥원

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