The UWB-based positioning algorithm and H/W development for safety of offshore plant workers

An offshore plant industry environment has high risk of accidents, accurate position information is important for workers safety. In this paper, UWB-based triangulation algorithm and hardware are proposed for offshore plant. The distance between the tag and the AP is measured by the TWR-ToA method, and accurate results are calculated by triangulation with three or more distance values. The proposed system consisting of tag, AP and positioning engine provides positioning results in x, y coordinates format with response time under 1 second.