摘要
基于对智能手机的WiFi无线定位技术的研究,设计了一种地震灾害中面向生命探测的无线定位系统。通过对被压埋手机的定位,间接探测被压埋人员的位置。首先阐述了对实际废墟信道下无线WiFi2.4G信号的测量,得到在废墟复杂环境下的路径损耗。其次从定位系统的客户端和服务器端两方面介绍了WiFi定位系统的结构及各模块实现,介绍了客户端数据采集、存储、滤波、转发的具体实现,服务器端数据接收、定位算法的实现及位置坐标的显示。该系统为地震等灾害救援中的人员定位提供了一种新的解决方案,使得对大面积灾害被压埋人员准确而快速定位成为可能。
A wireless positioning system for detection of life in earthquakes is designed based on the research of WiFi wireless location technology for smart phones. By detecting the position of the buried mobile phones,people who are trapped are indirectly located. Firstly,the measurement of wireless Wi-Fi 2. 4 G signal strength under actual ruins is described,and the path loss in the complex environment is obtained. Secondly,system structure and the realization of each module of positioning system are introduced from both client and server. For the client,the functions include data collection,storage,filtering and transferring. Server performs data reception,realization of the localization algorithm and position coordinates display. A new solution is provided for the personnel positioning in disaster rescue,such as an earthquake,making it possible for victims to be quickly and accurately positioned in a large-area disaster.
出处
《自然灾害学报》
CSCD
北大核心
2017年第5期22-29,共8页
Journal of Natural Disasters
基金
地震科技星火计划项目(XH14072)~~
关键词
无线定位
生命探测
地震
废墟
路径损耗
滤波
wireless positioning
detection
earthquake
ruins
path loss
filtering
