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Sensors 2017, 17(11), 2634; https://doi.org/10.3390/s17112634

A Human Body Pressure Distribution Imaging System Based on Wavelet Analysis and Resistance Tomography

School of Mechanical Engineering, Xi’an University of Science and Technology, Xi’an 710054, China
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Received: 12 September 2017 / Revised: 2 November 2017 / Accepted: 9 November 2017 / Published: 15 November 2017
(This article belongs to the Special Issue Biosensing for Interfacial Science)
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Abstract

In this paper, a pressure distribution sensing system based on wavelet analysis and resistance tomography is proposed to overcome the shortcomings of a traditional electrode type pressure distribution sensor, which needs to be arranged with many electrodes and has a high production cost. The system uses ADS1256, a constant current source module, a serial communication module, a Raspberry host, a touch screen, and other components. The wavelet transform is used to preprocess the collected signal to improve the anti-jamming performance of the system. The method of resistance tomography is used to realize the real-time imaging of pressure distribution. Finally, the reliability of the system is verified using conductive silica gel as a sensitive material. The experimental results show that wavelet analysis preprocessing can significantly improve the quality of pressure distribution imaging. View Full-Text
Keywords: pressure distribution sensor; wavelet analysis; electrical resistance tomography pressure distribution sensor; wavelet analysis; electrical resistance tomography
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Zhao, S.; Wang, W.; Guo, W.; Zhang, C. A Human Body Pressure Distribution Imaging System Based on Wavelet Analysis and Resistance Tomography. Sensors 2017, 17, 2634.

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