基于三轴加速度传感器和电子罗盘的人体摔倒监测系统

System for Fall Monitoring Based on 3-Axis Accelerometer and Electronic Compass

设计了一种具有远程监控功能的人体摔倒监测系统,为实现系统的小体积和低功耗,系统硬件主要由MS]P430F149单片机、三轴加速度传感器、电子罗盘和无线通信模块组成,由MMA8453Q采集人体运动过程中的三轴加速度数据、CPS320T模块采集人体运动状态参数、无线模块nRF24L01实现系统与工作站间的数据通信。分析了系统的主要硬件模块的接口电路设计方法,并给出了基于硬件的摔倒监测算法。实验结果表明,本系统摔倒监测准确率达98.8%,功耗低,具有很强的实用性。

The system for fall monitoring with function of remote monitoring is designed.The system is composed of MSP430 MCU,3-axis accelerometer,electronic compass and wireless communication module for small size and low power.Three-axis acceleration data are collected by MMA8453 Q,state parameters of human body during exercise are collected by CPS320 T,two-way communication between system and workstation is realized by nRF24L01.The interface circuit design of the hardware module and software algorithm of fall monitoring are analyzed.The experiment results demonstrate that the system has a great practical value with its 98.8%accuracy of fall monitoring and low power.