摘要
我国地震灾害频频发生,震后在大量钢筋混凝土、砖石和杂物的覆盖下,确定埋压人员的准确位置是展开救援工作的难点。使用一种基于Wi-Fi信号强度衰减模型的地震埋压人员定位算法,通过在埋压人员周边部署三台Wi-Fi信号发射器,利用发射信号与埋压人员手机接收信号的变化,有效解决定位难的问题。在不同地震灾后场景下进行大量的实验测试,并通过混合滤波对实验数据去噪,计算出不同环境中误差最小的环境参数,构建信号衰减模型;在此基础上,应用改进后的加权质心定位算法最终得出一种较为精确的可用于地震埋压人员位置确定的方法。
Earthquake occurs frequently in China. The accurate positioning of buried people under the coverage of a large amount of reinforced concrete, masonry and debris is a difficult task. In this paper, a positioning algorithm of buried people based on the Wi-Fi signal strength attenuation model is proposed. By deploying three Wi-Fi signal transmitters around the buried people, the variation of signals transmission and signals received from the mobile phone can locate the buried people. This paper conducts experiments in various post-earthquake scenarios, and the experimental data are denoised by hybrid filtering. The environmental parameters with the least error in different scenarios are calculated and the signal attenuation model for ranging is constructed. The results show that improved triangulation centroid algorithm performs better on buried people positioning.
作者
陈雪纯
张入千
王立新
CHEN Xuechun;ZHANG Ruqian;WANG Lixin(City University of Hong Kong,Shenzhen 518000,China;CEA Key Laboratory of Earthquake Monitoring and Disaster Mitigation Technology,Guangdong Earthquake Agency,Guangzhou 510070,China;GuangdongProvincialKey Laboratory of Earthquake Early Warning and Seismic Safety Diagnosis of Major Projects,Guangdong Earthquake Agency,Guangzhou 510070,China;Shenzhen Academy of Disaster Prevention and Reduction,Shenzhen 518000,China)
出处
《华南地震》
2018年第4期10-16,共7页
South China Journal of Seismology
基金
广东省科技计划项目(2015A020217007)
广东省地震监测预警与重大工程地震安全诊断重点实验室开放运行项目(2017B030314082)
关键词
信号强度
混合滤波
测距模型
三角定位
Signal strength
Ranging model
Hybrid filtering
Triangulation localization
