生物医学工程研究
生物醫學工程研究
생물의학공정연구
JOURNAL OF BIOMEDICAL ENGINEERING RESEARCH
2014年
3期
170-175,183
,共7页
跌倒监测%微电子机械系统%阈值%蓝牙%三轴加速度%角速度
跌倒鑑測%微電子機械繫統%閾值%藍牙%三軸加速度%角速度
질도감측%미전자궤계계통%역치%람아%삼축가속도%각속도
Falling monitoring%Microelectro mechanical systems%Threshold value%Bluetooth%Triaxial accelerometer%Angular speed
为了缩短老年人跌倒后的救助时间和提高安全保障，我们设计了一种基于加速度和角速度传感器的跌倒监测装置。该装置结合机械微电子系统（ microelectro mechanical system，MEMS）传感器、数字信号处理及无线传输技术应用于智能手机上。为区分人体跌倒事件和日常行为，结合人体三轴加速度和角速度联合对跌倒事件进行判断，通过大量实验选取合适阈值。针对老年人的生活特点，数据通过蓝牙装置发送至手机上进行处理，通过手机语音报警、手机GPS定位系统和短信通知医院和用户监护人，使得老年人跌倒后能够在第一时间获得救治，减小伤害。经过大量的实验测试结果统计，相比较于传统的三轴加速度判断跌倒事件，结合三轴加速度和加速度联合判断使该系统的准确率从84．29％提高至100％。结果表明：基于MEMS传感器的可穿戴式跌倒监测系统具有便捷、准确、功耗低的特点，能够准确监测出跌倒事件并进行报警。
為瞭縮短老年人跌倒後的救助時間和提高安全保障，我們設計瞭一種基于加速度和角速度傳感器的跌倒鑑測裝置。該裝置結閤機械微電子繫統（ microelectro mechanical system，MEMS）傳感器、數字信號處理及無線傳輸技術應用于智能手機上。為區分人體跌倒事件和日常行為，結閤人體三軸加速度和角速度聯閤對跌倒事件進行判斷，通過大量實驗選取閤適閾值。針對老年人的生活特點，數據通過藍牙裝置髮送至手機上進行處理，通過手機語音報警、手機GPS定位繫統和短信通知醫院和用戶鑑護人，使得老年人跌倒後能夠在第一時間穫得救治，減小傷害。經過大量的實驗測試結果統計，相比較于傳統的三軸加速度判斷跌倒事件，結閤三軸加速度和加速度聯閤判斷使該繫統的準確率從84．29％提高至100％。結果錶明：基于MEMS傳感器的可穿戴式跌倒鑑測繫統具有便捷、準確、功耗低的特點，能夠準確鑑測齣跌倒事件併進行報警。
위료축단노년인질도후적구조시간화제고안전보장，아문설계료일충기우가속도화각속도전감기적질도감측장치。해장치결합궤계미전자계통（ microelectro mechanical system，MEMS）전감기、수자신호처리급무선전수기술응용우지능수궤상。위구분인체질도사건화일상행위，결합인체삼축가속도화각속도연합대질도사건진행판단，통과대량실험선취합괄역치。침대노년인적생활특점，수거통과람아장치발송지수궤상진행처리，통과수궤어음보경、수궤GPS정위계통화단신통지의원화용호감호인，사득노년인질도후능구재제일시간획득구치，감소상해。경과대량적실험측시결과통계，상비교우전통적삼축가속도판단질도사건，결합삼축가속도화가속도연합판단사해계통적준학솔종84．29％제고지100％。결과표명：기우MEMS전감기적가천대식질도감측계통구유편첩、준학、공모저적특점，능구준학감측출질도사건병진행보경。
To design a falling detection device, aiming to reduce the delay of helping the tumbling old men and to enhance their safety.This device combined MEMS (micro-electro-mechanical systems) sensor and digital signal processing with wireless trans-mission technology so as to be used on smart phones.To distinguish falling accidents from daily behaviors, it could be judged from body′s triaxial accelerometer and angular speed and proper threshold value selected from lots of experiments.The data could be sent to their phones, through Bluetooth and given out alarm through cellular voice, and besides, their location located by GPS and their condi-tions would be texted to the hospital and their guardians.Then after falling,the old people could be helped in the shortest time.Lots of experiments showed that the accuracy rate of the judgment from the combination of triaxial accelerometer and angular speed was 100%, compared to that of traditional judgment from triaxial accelerometer which was 84.29%.The result shows that the wearable falling de-tection device based on MEMS sensor has the characteristics of convenience, accuracy and low power dissipation and has the ability of detecting falling accurately and giving out alarm.It meets the requirements of falling monitoring.
