文档介绍：第 25 卷第 2 期电子测量与仪器学报 Vol. 25 No. 2
· 186 · JOURNAL OF ELECTRONIC MEASUREMENT AND INSTRUMENT 2011 年 2 月

DOI: .
ZigBee 技术在人员搜救系统中的应用
李战明李振兴
(兰州理工大学电气工程与信息工程学院, 兰州 730050)
摘要: 2430 芯片的基础上, 提出了一种基于 ZigBee 的人员搜救系统方案。ZigBee 节点获取遇难人员的生命体征
并以广播方式周期性发送, 搜救系统获取信号后利用无线电信号损耗模型和高斯模型, 提取有效 RSSI 值, 并用多圆覆面法实
现定位。方案改进了多圆覆面的定位算法, 达到了搜救系统的精度要求。此设计便于人员携带, 体积小, 能量消耗少, 具有一
定的价值。
关键词: RSSI;ZigBee;距离估计
中图分类号: TN78 文献标识码: A 国家标准学科分类代码:
Application of ZigBee technology in rescue system
Li Zhanming Li Zhenxing
(Electrical Engineering & Information Engineering College,
Lanzhou University of Science and Technology, Lanzhou 730050, China)
Abstract: Based on 2430 chip, a program of ZigBee rescue system is designed. ZigBee nodes obtain the
vital signs of person in dangerous and send periodic signals in broadcast. Using the radio-signal loss model and the
Gaussian model, search and rescue system should extract the effective RSSI value from the other nodes’ signals and get
the location of person in dangerous by the method of multi-round coverage. The program improves the method of
multi-round coverage and contents the requirements of system. It is carry-home design, little size, lower energy con-
sumption, so it has a certain value.
Keywords: RSSI; ZigBee; distance estimation

1 引言 2 定位算法的选择
,
随着无线网络的发展各种无线通讯技术逐渐无线传感器