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Sensors 2018, 18(4), 1190; https://doi.org/10.3390/s18041190

Easy-to-Build Textile Pressure Sensor

Pontificia Universidad Católica de Valparaíso, Escuela de Ingeniería Eléctrica, Avenida Brasil 2147, Valparaíso 2362804, Chile
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Received: 28 February 2018 / Revised: 7 April 2018 / Accepted: 10 April 2018 / Published: 13 April 2018
(This article belongs to the Section Physical Sensors)
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Abstract

This article presents the design, construction, and evaluation of an easy-to-build textile pressure resistive sensor created from low-cost conventional anti-static sheets and conductive woven fabrics. The sensor can be built quickly using standard household tools, and its thinness makes it especially suitable for wearable applications. Five sensors constructed under such conditions were evaluated, presenting a stable and linear characteristic in the range 1 to 70 kPa. The linear response was modeled and fitted for each sensor individually for comparison purposes, confirming a low variability due to the simple manufacturing process. Besides, the recovery times of the sensors were measured for pressures in the linear range, observing, for example, an average time of 1 s between the moment in which a pressure of 8 kPa was no longer applied, and the resistance variation at the 90% of its nominal value. Finally, we evaluated the proposed sensor design on a classroom application consisting of a smart glove that measured the pressure applied by each finger. From the evaluated characteristics, we concluded that the proposed design is suitable for didactic, healthcare and lifestyle applications in which the sensing of pressure variations, e.g., for activity assessment, is more valuable than accurate pressure sensing. View Full-Text
Keywords: pressure measurement; textiles; wearable sensors; easy-to-build pressure measurement; textiles; wearable sensors; easy-to-build
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Pizarro, F.; Villavicencio, P.; Yunge, D.; Rodríguez, M.; Hermosilla, G.; Leiva, A. Easy-to-Build Textile Pressure Sensor. Sensors 2018, 18, 1190.

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