RTLS System of positioning laborers based-RTLS in tunnels or underground

摘要

The present invention relates to a RTLS-based tunnel or a labor-location recognition system in an underground space. In a RTLS-based tunnel or underground space, a helmet tag that is mounted on a helmet of a laborer and transmits a signal including a tag ID and a three-axis acceleration measurement value in real time through an acceleration sensor, A plurality of nodes for transmitting the distance information of the laborer estimated based on the tag ID and the three-axis acceleration measurement value scanned and received and the reception strength of the signal to the position estimation server, Axis acceleration measurement value measured during the unit time is calculated based on the first range and the second range based on the distance information received from the node, And a position estimation server for determining whether the motion estimation range is included in the movement prediction range. According to the present invention, accuracy and reliability of position estimation of a laborer in a tunnel or an underground space can be improved by solving the problem caused by positioning errors of existing positioning methods. In addition, it is possible to track and manage the location of the laborer, so that it is possible to perform rescue operation and control work in case of an accident in the field.