Fast location method of underground power distribution facilities based on low power Bluetooth beacon

For the problem that the output range of traditional location method is large and the optimal solution can not be obtained, a fast location method of underground space distribution facilities based on low-power Bluetooth beacon is designed. According to the overall architecture of the positioning method, a low-power Bluetooth beacon is established to collect the transmitted Bluetooth signals. The relationship between signal strength and distance is solved, and the interference data with large fluctuation is eliminated, and the Bluetooth signal propagation ranging model is established. A fast location algorithm for distribution facilities in underground space is designed, and the least square iterative method is used to solve the problem until the result meets the threshold value. The experimental results show that, compared with the traditional location method of distribution facilities in underground space, the location error of this method is reduced by 0.56m, 0.7m and 1.11m, which can achieve a more accurate and stable estimation of the location and meet the application needs of practical engineering.