Extracting Gait Velocity and Stride Length from Surrounding Radio Signals

論文URL:http://dl.acm.org/citation.cfm?doid=3025453.3025937

論文アブストラクト:Gait velocity and stride length are critical health indicators for older adults. A decade of medical research shows that they provide a predictor of future falls, hospitalization, and functional decline among seniors. However, currently these metrics are measured only occasionally during medical visits. Such infrequent measurements hamper the opportunity to detect changes and intervene early in the impairment process.In this paper, we develop a sensor that uses radio signals to continuously measure gait velocity and stride length at home. Our sensor hangs on a wall like a picture frame. It does not require the monitored person to wear or carry a device on her body. Our approach builds on recent advances in wireless systems which have shown that one can locate people based on how their bodies impact the surrounding radio signals. We demonstrate the accuracy of our method by comparing it to the gold standard in clinical tests, and the VICON motion tracking system. Our experience from deploying the sensor in 14 homes indicates comfort with the technology and a high acceptance rate.

日本語のまとめ:

無線信号によって,家屋内における人の歩行速度と歩幅を推定するシステム.メリットは,家に1つ置くだけでよい,他の部屋での行動もセンシングできる,など.モーキャプでの定量評価と,14軒の住宅に1ヶ月設置しての定性評価を報告.

(110文字)

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