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Sensors 2017, 17(8), 1923; https://doi.org/10.3390/s17081923

Evaluation of Flexible Force Sensors for Pressure Monitoring in Treatment of Chronic Venous Disorders

School of Fashion and Textiles, Royal Melbourne Institute of Technology, Melbourne 3056, Australia
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Received: 31 July 2017 / Revised: 15 August 2017 / Accepted: 16 August 2017 / Published: 21 August 2017
(This article belongs to the Special Issue Force and Pressure Based Sensing Medical Application)
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Abstract

The recent use of graduated compression therapy for treatment of chronic venous disorders such as leg ulcers and oedema has led to considerable research interest in flexible and low-cost force sensors. Properly applied low pressure during compression therapy can substantially improve the treatment of chronic venous disorders. However, achievement of the recommended low pressure levels and its accurate determination in real-life conditions is still a challenge. Several thin and flexible force sensors, which can also function as pressure sensors, are commercially available, but their real-life sensing performance has not been evaluated. Moreover, no researchers have reported information on sensor performance during static and dynamic loading within the realistic test conditions required for compression therapy. This research investigated the sensing performance of five low-cost commercial pressure sensors on a human-leg-like test apparatus and presents quantitative results on the accuracy and drift behaviour of these sensors in both static and dynamic conditions required for compression therapy. Extensive experimental work on this new human-leg-like test setup demonstrated its utility for evaluating the sensors. Results showed variation in static and dynamic sensing performance, including accuracy and drift characteristics. Only one commercially available pressure sensor was found to reliably deliver accuracy of 95% and above for all three test pressure points of 30, 50 and 70 mmHg. View Full-Text
Keywords: pressure sensor; sensor evaluation; calibration; force-sensing; low interface pressure; compression therapy; piezoresistive sensors pressure sensor; sensor evaluation; calibration; force-sensing; low interface pressure; compression therapy; piezoresistive sensors
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Parmar, S.; Khodasevych, I.; Troynikov, O. Evaluation of Flexible Force Sensors for Pressure Monitoring in Treatment of Chronic Venous Disorders. Sensors 2017, 17, 1923.

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