透過您的圖書館登入
IP:3.145.88.227
  • 學位論文

用於年長者居家跌倒偵測系統設計

Design of Elder Fall Detection System for Homecare

指導教授 : 曾煥雯
若您是本文的作者,可授權文章由華藝線上圖書館中協助推廣。

摘要


對於獨居老人來說跌倒是一項嚴重的傷害,本研究的目的即在使用可穿戴式的加速度感測器及固定式的壓力感測器偵測??人於?動時發生跌倒情況?進?研究。本研究結合地板壓力感測、加速度感測以及小波轉換可精確的偵測老年人跌倒。 小波轉換為近年來相當熱門的研究題目之一,小波定理提供了統一的架構給許多不同的訊號處理應用領域。目前小波轉換已廣泛地應用在通信系統,信號處理,影像和音訊處理等不同的研究領域。 本研究參考訊號相關之論文,並提出的以小波轉換搭配積函數的演算法為基礎作跌倒判斷,積函數是由信號經由小波轉換後產生的一低頻訊號和高頻訊號取絕對值相乘所得,此積函數能將一般運動的訊號衰減並突顯跌倒瞬間之能量,再加上新的訊號分割點判斷演算法並結合專家系統綜合推理,與傳統方法相較之下,本論文所提的判斷分割點的演算法可提昇判斷跌倒的準確度。

關鍵字

小波轉換 專家系統 積函數

並列摘要


Unintentional falls are a common cause of severe injury in the elderly population. This research presents a wearable micro-sensing device worn on the waist and a network of fixed motes in the home environment for detecting human body falls because of stroke or elder movement. It combines micro-sensors and digital data processing technologies and wavelet transform. We can detect the occurrence of a fall. The wavelet transform is one of the most exciting developments of the last decade. Wavelet theory provides a unified framework for a number of techniques that had been developed independently for various signal-processing applications. This thesis makes use of wavelet transform and energy profile to indicate the segmentation point of signal and is no need to set any predetermined threshold. The product function is generated from the appropriate wavelet and scaling coefficients of input signal, and it can be applied to indicate the segmentation point. With this product function, expert system and the additional verification of energy profile, the segmentation point can be accurately to detect falls with a low computation complexity.

並列關鍵字

DWT Expert System Energy Product

參考文獻


[8] 劉佑成,“智慧型居家照護系統”,國立台灣師範大學工業教育學系,碩士?文,2006。
[18] 宋佩栩,一個使用環場攝影機並結合個人資訊的客製化跌倒偵測系統,中原大學電子工程系碩士論文,民國95年。
[4] Seon Woo Lee, Kenji Mase, “Activity and location recognition using wearable Sensor” , Pervasive Computing, 2002 pp. 24-32.
[5] 鐘志裕,楊明興,“應用FPGA 與遠端技術之獨居?人安全監測系統”,成功大學電機工程研究所,碩士?文,2003。
[9] 鄭才新,“電機實驗之嵌入式專家系統設計與實現”,國立台灣師範大學工業教育學系,碩士?文,2006。

延伸閱讀