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Sensing Movement: Microsensors for Body Motion Measurement
Laboratory for Biomedical Microsystems, Department of Biomedical Engineering, The Ohio State University, Columbus, OH 43210, USA
* Author to whom correspondence should be addressed.
Received: 15 November 2010; in revised form: 16 December 2010 / Accepted: 5 January 2011 / Published: 10 January 2011
Abstract: Recognition of body posture and motion is an important physiological function that can keep the body in balance. Man-made motion sensors have also been widely applied for a broad array of biomedical applications including diagnosis of balance disorders and evaluation of energy expenditure. This paper reviews the state-of-the-art sensing components utilized for body motion measurement. The anatomy and working principles of a natural body motion sensor, the human vestibular system, are first described. Various man-made inertial sensors are then elaborated based on their distinctive sensing mechanisms. In particular, both the conventional solid-state motion sensors and the emerging non solid-state motion sensors are depicted. With their lower cost and increased intelligence, man-made motion sensors are expected to play an increasingly important role in biomedical systems for basic research as well as clinical diagnostics.
Keywords: motion sensors; human vestibular system; accelerometer; gyroscope; liquid-state motion sensor; artificial hair cell motion sensor; thermal convection accelerometer
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Cite This Article
MDPI and ACS Style
Zeng, H.; Zhao, Y. Sensing Movement: Microsensors for Body Motion Measurement. Sensors 2011, 11, 638-660.
Zeng H, Zhao Y. Sensing Movement: Microsensors for Body Motion Measurement. Sensors. 2011; 11(1):638-660.
Zeng, Hansong; Zhao, Yi. 2011. "Sensing Movement: Microsensors for Body Motion Measurement." Sensors 11, no. 1: 638-660.