Martinez-Estrada, M.; Moradi, B.; Fernández-Garcia, R.; Gil, I. Impact of Manufacturing Variability and Washing on Embroidery Textile Sensors. Sensors2018, 18, 3824.
Martinez-Estrada, M.; Moradi, B.; Fernández-Garcia, R.; Gil, I. Impact of Manufacturing Variability and Washing on Embroidery Textile Sensors. Sensors 2018, 18, 3824.
Martinez-Estrada, M.; Moradi, B.; Fernández-Garcia, R.; Gil, I. Impact of Manufacturing Variability and Washing on Embroidery Textile Sensors. Sensors2018, 18, 3824.
Martinez-Estrada, M.; Moradi, B.; Fernández-Garcia, R.; Gil, I. Impact of Manufacturing Variability and Washing on Embroidery Textile Sensors. Sensors 2018, 18, 3824.
Abstract
In this work, an embroidered textile moisture sensor is presented. The sensor is based on a capacitive interdigitated structure embroidered on a cotton substrate with an embroidery conductor yarn composed by 99% pure silver plated nylon yarn 140/17 dtex. In order to evaluate the sensor sensitivity, the impedance of the sensor has been measured by means of a LCR meter from 20 Hz to 20 kHz on a climatic chamber with a sweep of the relative humidity from 25% to 65% at 20 ºC. The experimental results show a clear and controllable dependence of the sensor impedance with the relative humidity. Moreover, the reproducibility of the sensor performance subject to the manufacturing process variability and washing process is also evaluated. The results show that the manufacturing variability introduce a moisture measurement error up to 4%. The washing process impact on the sensor behavior after applying the first washing cycle implies a sensitivity reduction higher than 14%. Despite these effect, the textile sensor keeps its functionality and can be reused in standard conditions. Therefore, these properties point out the usefulness of the proposed sensor to develop wearable applications on health and fitness scope including the user needs to have a life cycle longer than one-time use
Engineering, Electrical and Electronic Engineering
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