基于ZigBee的定位和人体跌倒检测系统

摘要

This paper presents a system of wireless fall detection with function of localization and remote monitoring. The fall detection technology is based on the characteristic of acceleration during falls and implemented by ARM and tri - axis accelerometer sensor. A novel localization method based on ZigPee is introduced. When an accidental fall is detected, a message including fall location will send to the monitor's mobile phone immediately. The experiment results demonstrate that our scheme have a 100% accuracy of fall detection as well as a localization accuracy of 1 meter, and the monitors can receive the alarm message in 5 seconds.%提出了一个具有跌倒定位和远程报警功能的无线跌倒监控系统.跌倒监测是基于人体跌倒过程中加速度曲线的变化特性,由三轴加速度传感器和ARM处理器实现；同时介绍了一种新颖的基于ZigBee的定位方法,当监测到人体跌倒时,一个带有跌倒位置的报警信息将立即发送到医护人员的移动手机上.实验结果表明,本系统可以100％监测到人体跌倒,提供精度为1 m的精确定位,使医护人员在5 s内收到跌倒报警信息.