基于MEMS三轴加速度计的跌倒检测电路的设计

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随着社会老龄化进程的不断发展，老年人口所占比霞也逐年增加，而老年人的生理特点造成了他们这一人群的特殊行为特征易跌倒。为了解决跌倒监测、报臀求助和步态加速度数据等问题，本文在分析比较斟内外跌倒检测及相关技术的基础上，考虑了系统的实用性等因素，设计了一个跌倒检测的实时监测系统，它采用MEMS三轴加速度传感器ADXL345进行加速度数据采集，中央处理器TMS320F2812进行数据分析，并设计报警器来完成监测系统的搭建。实验结果表明该系统在老人跌倒时能够监测并进行报警，为及时进行救援赢得了宝贵的时间。

With the continuous development of social aging process, the share of older population is also growing and physiologi- cal characteristic of the elderly causes special behavior---easy to fall. On the basis of analyzing and comparing fall detection at indoor and outdoor and considering the practicality of the system, a real-time monitoring system for fall detection is designed to solve the problem of fall monitoringi Calarm for help and gait acceleration data. Triaxial accelerometer monitoring system is built by MEMS triaxial accelerometer ADXL345 to collect acceleration data central processor analyzing data and alarm. Experimental results show that system can monitor falls, alarm and rescue...