基于WiFi定位的地震搜救系统设计

Design of Seismic Search and Rescue System Based on WiFi

在地震灾害频发的时代,地震发生后,快速定位被困人员的位置和数量是展开救援工作的第一步。由此介绍一种以Wi Fi为核心的搜救系统的设计。该系统采取通过介质寻找人方式,利用了被困人员自身携带的智能手机,采用Wi Fi获取被困人员的MAC地址和手机信号强度RSSI,将数据通过主控芯片发送到Android端,并用三角形定位算法处理,最终实现了在Android平台上显示出被困人数和大致位置,通过上报机制让指挥中心实时了解灾区情况,及时制定救援计划。测试结果证明,基于Wi Fi定位的地震搜救系统具有成本低廉、操作简便、定位准确度比较高的优势,有利于智能搜救设备在地震救援中的普及。

In such an era that earthquake occurs frequently,more advanced technologies are needed to help people survive from this disaster.When it happens,fast tracking the location and the number of people who are trapped is the top priority in the rescue operation.Therefore,this paper introduces a practical search and rescue system taking WiFi as the core.The system takes advantages of the way the medium looks for people and uses the smart phones that are carried by the trapped people themselves.Firstly,the system gets the MAC address and phone signal RSSI of trapped people through WiFi,and secondly Android platform receives the data from system master chip.Finally the location and the number of trapped people and their general location are uncovered immediately on the platform by triangle locating algorithm.In this way,the command center will be minoring earthquake areas in real-time,to conduct the rescue work better.After numerous tests,it has been proved that the earthquake search and rescue system based on WiFi is a low-cost and easy-operated device with high positioning accuracy.As a result,this research is of great significance,which will surely boost future inventions of smart search and rescue device for the earthquake rescue.