步態(tài)分析是一種通過(guò)記錄下人體在行走過(guò)程中的動(dòng)作和規(guī)律信息,從而對(duì)肢體系統(tǒng)和結(jié)構(gòu)加以研究、分析的方法。不僅用于臨床上幫助恢復(fù)和治療有行走能力有缺陷或受損的患者,而且也常用于運(yùn)動(dòng)生物力學(xué)中進(jìn)行效率評(píng)估,以?xún)?yōu)化運(yùn)動(dòng)員的跑步姿勢(shì),提高體育成績(jī)。進(jìn)行步態(tài)分析*為關(guān)鍵的是準(zhǔn)確獲取評(píng)估時(shí)所需的運(yùn)動(dòng)信息,MEMS加速度傳感器和陀螺儀的出現(xiàn),使得采用慣性運(yùn)動(dòng)測(cè)量的方式成為可能。
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在步態(tài)分析中,慣性傳感器所起到的作用是捕捉運(yùn)動(dòng)動(dòng)作信息,以便于進(jìn)行判斷、分析,并找出問(wèn)題所在。為達(dá)此目的,則需要能夠同時(shí)采集到腿部的多個(gè)部位在每一瞬間的位置和狀態(tài)信息。通過(guò)分布于各測(cè)量點(diǎn)處的便攜式設(shè)備中,加速度傳感器和陀螺儀對(duì)運(yùn)動(dòng)加速度和轉(zhuǎn)動(dòng)角速度的大小測(cè)量,再經(jīng)過(guò)后續(xù)的數(shù)據(jù)處理,整合后,便可在電腦軟件的協(xié)助下完成生物運(yùn)動(dòng)力學(xué)方面的模擬和分析工作。
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