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Sensors 2012, 12(12), 16628-16640; doi:10.3390/s121216628

Design and Test of a Soft Plantar Force Measurement System for Gait Detection

* ,
State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, No. 28, Xianning West Road, Xi'an, Shaanxi 710049, China
* Author to whom correspondence should be addressed.
Received: 29 September 2012 / Revised: 23 November 2012 / Accepted: 26 November 2012 / Published: 3 December 2012
(This article belongs to the Section Physical Sensors)
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This work describes a plantar force measurement system. The MEMS pressure sensor, as the key sensing element, is designed, fabricated and embedded into a flexible silicon oil-filled bladder made of silicon rubber to constitute a single sensing unit. A conditioning circuit is designed for signal processing and data acquisition. The characteristics of the plantar force sensing unit are investigated by both static and dynamic tests. A comparison of characteristics between the proposed plantar force sensing unit and a commercial flexible force sensor is presented. A practical experiment of plantar force measurement has been carried out to validate the system. The results demonstrate that the proposed measurement system has a potential for success in the application of plantar force measurement during normal gait.
Keywords: MEMS; plantar force; gait detection; flexible  MEMS; plantar force; gait detection; flexible ;
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Zhang, X.; Zhao, Y.; Duan, Z.; Liu, Y. Design and Test of a Soft Plantar Force Measurement System for Gait Detection. Sensors 2012, 12, 16628-16640.

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