基于 51 单片机的老人防摔 GPS 定位报警本产品设计了一种基于 51 单片机，利用 ADXL345 加速度传感器的跌倒实时检测系统，来实现来人摔倒后的报警。用以完成老人跌倒后可以被及时发现并救助；它运用基于ＳＶＭ阈值法的三次判别算法；精准判断老人是否摔倒。设计还使用了ＧＰＳ卫星定位模块；对老人摔倒后进行准确定位。大量实践数据表明，设计产品对大多数情况都能正确判断，误报率较低，可有效的区分日常生活行为和跌倒行为，对老人摔倒检查正确率达到９ 0％，稳定性，识别率很高。 关键词：加速度传感器；阈值法；跌倒检测 1AbstractThe design of this product is based on 51 single-chip computer, using ADXL345 accelerometer real-time fall detection system, to achieve the alarm after people fall. It can be found and rescued in time after the elderly fall. It uses the three-time discriminant algorithm based on SVM threshold method to accurately judge whether the elderly fall or not. GPS satellite positioning module is also used in the design, which can accurately locate the elderly after falling down. A large number of practical data show that the design product can correctly judge most cases, and the rate of false alarm is low. It can effectively distinguish daily life behavior and fall behavior. The correct rate of fall detection for the elderly is 90%, stability and recognition rate is high.Key words: acceleration sensor; threshold method; fall detection2摘要........................................................................................................................21 概述.....................................................................................................................51.1 研究背景及意义.......................................................................................51.2 研究现状...................................................................................................51.3 应用前景......................................
