Use of hot wire anemometry to measure velocity of the limb during human movement |
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| Affiliation: | 1. Department of Mechanical Engineering, University of California, Berkeley, Berkeley, CA 94720, USA;2. Department of Othopaedic Surgery, University of California, San Francisco, San Francisco, CA 94143, USA;1. Unité de Recherche en Energies Renouvelables en Milieu Saharien (URERMS), Centre de Développement des Energies Renouvelables, CDER, 01000, Adrar, Algeria;2. Unité de Recherche Matériaux - Procédés et Environnement (UR-MPE), Faculté de Technologie, Université M’Hamed BOUGARA de Boumerdes, Avenue de I’indépendance, Boumerdes, 35000, Algeria;3. Laboratoire de Fiabilité des Equipements Pétroliers et Matériaux (LFEPM), Faculté des Hydrocarbures et de la Chimie, Université M’Hamed BOUGARA de Boumerdes, Avenue de I’indépendance, 35000, Boumerdes, Algeria |
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| Abstract: | Hot film anemometry, x-configuration probes were used in two experiments to evaluate their effectiveness at measurement of limb velocity. Data from tests with a probe attached to the end of a pendulum establish that the hot films measure velocity in the swing phase within 0.098 ms−1. The kinetic energy per unit mass of the pendulum was predicted within ±0.005 m2 s−2, from the measured velocity. In gait experiments with one human subject at speeds greater than 0.25 ms−1, the hot film anemometer and a video system predicted speeds within 0.083 ms−1. The hot film data are electronic signals that are easily stored and processed. The results from these experiments demonstrate that hot film anemometry is an effective and efficient method for direct measurement and analysis of the limb velocity. |
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