運用測力板於重心之穩定性評估

重心的轉移幫助人們執行動作時可以達到平衡，重心位置的變化越大，我們的動作就會越大。當我們處於靜止狀態重心位置有變化過大的情形就代表不穩定，此次系統所檢測為單腳跳躍和步行姿勢。在不同的步行姿勢下重心將會有差異，不良的姿勢會對身體造成額外的負擔，透過系統的檢測可以得知此資訊，就能夠有助於我們的矯正步行的姿勢。本研究目的建置一套有線重心位置感測器，搭配電腦端人機介面，檢測項目包含有：所受力道、重心位置、穩定度，搭配圖表顯示，判斷重心位置及其軌跡和穩定性的評估。本篇以Arduino Nano開發板作為主控核心，採用USB來做為本篇通訊方式，一開始採用Hx711 A/D轉換模組由於傳輸速率太慢，後續採用自己製作放大電路才能將完整的動態資料記錄下來，將所得到資料使用EXCEL後圖表呈現，根據圖表判斷動作是否穩定及達到姿勢穩定所需時間，來評估姿勢穩定度。

關鍵字

重心位置量測；重心軌跡；姿勢穩定度；測力板

並列摘要

COG transfer helps human being remain balanced while moving, the more the COG moves ,the larger our movements. When we trying to be standstill while COG moves, it means unstable, the measurement will be jump by one foot and walking posture, COG will shift under different walking posture, and a bad walking posture will increase the harm to our body, by the system detection we can acquire such information, to help us to adjust our walking posture. This study is to building a system looking for COG, with human computer interface , to measure force COG stability, with the graphical display, to pinpoint the COG and its track with a stability evaluation. This article is mainly focus on Arduino Nano as the Master core , take USB as our main communication method. At the start, the transmission speed rate of Hx711 A/D conversion module is too slow for the system, problem solved by building a own voltage amplification circuits in order to capture all dynamic data, and present as an Excel graph, based on the graph system will judge if the movement stable and the time to be still, to measure the stability.

並列關鍵字

Looking for COG ； COG track ； Posture stability ； Force plate

參考文獻

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運用測力板於重心之穩定性評估

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