基于无线传感器网络的高危生产区人员定位系统

Location System for Staff in High-Risk Production Area Based on Wireless Sensor Networks

为解决高危生产区事故状态下搜救困难问题,设计并建立一套能够实时反映现场工作人员位置信息的人员定位系统。系统由硬件平台和自行开发的LocClient软件平台组成,硬件平台利用线性调频扩频技术进行通信并实现测距,软件平台能够对测得的数据进行处理,并以坐标和图形化两种方式实时显示现场工作人员的位置信息。在系统平台上设计并完成了基于对称双路双边测距方法(SDS-TWR)和极大似然估计算法的定位与跟踪实验,实验结果表明了该系统用于高危生产区人员定位与跟踪的可行性。

In order to resolve the problem of searching the staff in emergency, a location system for staff in high-risk production area is designed. This system shows position of the staff in real time, which contains hardware platform and self-developed software platform. The hardware platform uses Chirp Spread Spectrum technique to communicate and range, and the software platform LocClient can process the distance information and display the position information real time in two ways of coordinate and graphic scheme. Experiments of locating and tracking based on Symmetrical Double-Sided Two-Way Ranging（SDS-TWR） and maximum likelihood estimation have been done, and results demonstrate that the system is efficient.