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Improvement of RTL system for location monitoring of multi-laborers in the underground space
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 Title & Authors
Improvement of RTL system for location monitoring of multi-laborers in the underground space
Song, Ki-Il; Lim, Jin-Sun; Lee, Hang-Lo;
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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.
Underground space;RTL system;RSSI;Accelerometer;
 Cited by
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