The Research on Staff Position System of Wireless Sensor Networks in Dangerous Places

Firstly, this paper provides the overall structural design of the staff positioning system of Wireless Sensor Networks in dangerous places, and introduces various types of module node which consist of the system. This paper also highlights the advantages of Wireless Sensor Networks technology which can form Ad Hoc Network and data Multi-hop. Finally, it puts forward the RSSI ranging algorithm. According to the actual condition in the factory, it also gives the precise calibration of A and n which in the formula of the simplified model. The experimental results show that in the range of 15m testing, the position deviation is less than2m, which can fully satisfy the requirements of the personnel positioning in dangerous places.