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Sensor for Measuring Strain in Textile
Wearable Computing Lab, ETH Zürich, Gloriastrasse 35, 8092 Zürich, Switzerland
EMPA Dübendorf, Überlandstrasse 129, 8600 Dübendorf, Switzerland
* Author to whom correspondence should be addressed.
Received: 6 May 2008; in revised form: 20 May 2008 / Accepted: 21 May 2008 / Published: 3 June 2008
Abstract: In this paper a stain sensor to measure large strain (80%) in textiles is presented. It consists of a mixture of 50wt-% thermoplastic elastomer (TPE) and 50wt-% carbon black particles and is fiber-shaped with a diameter of 0.315mm. The attachment of the sensor to the textile is realized using a silicone film. This sensor configuration was characterized using a strain tester and measuring the resistance (extension-retraction cycles): It showed a linear resistance response to strain, a small hysteresis, no ageing effects and a small dependance on the strain velocity. The total mean error caused by all these effects was +/-5.5% in strain. Washing several times in a conventional washing machine did not influence the sensor properties. The paper finishes by showing an example application where 21 strain sensors were integrated into a catsuit. With this garment, 27 upper body postures could be recognized with an accuracy of 97%.
Keywords: strain sensor; textile integrated; elastomer.
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MDPI and ACS Style
Mattmann, C.; Clemens, F.; Tröster, G. Sensor for Measuring Strain in Textile. Sensors 2008, 8, 3719-3732.
Mattmann C, Clemens F, Tröster G. Sensor for Measuring Strain in Textile. Sensors. 2008; 8(6):3719-3732.
Mattmann, Corinne; Clemens, Frank; Tröster, Gerhard. 2008. "Sensor for Measuring Strain in Textile." Sensors 8, no. 6: 3719-3732.