Abstract

In this work, an embroidered textile moisture sensor is proposed and characterized with three different fabric substrates. The sensors are based on a capacitive interdigitated structure embroidered on a textile substrate with a conductive yarn. The performance of three different type of substrates has been addressed. In order to evaluate the sensor behavior, the impedance of the sensor has been measured by means of an LCR meter from 20 Hz to 200 kHz on a climatic chamber with a sweep of the relative humidity from 30% to 80% at 20 °C. The results show that the fabric substrate defines the electrical properties of the sensor due to both, the substrate permittivity and size yarn thickness increase. This sensor dependence determines the optimum substrate to be used to develop wearable applications for moisture measurement.

摘要

在这项工作中，提出了一种绣花纺织品湿度传感器，并以三种不同的织物基材为特征。传感器基于电容式叉指结构，该结构用导电纱线绣在纺织品基材上。已经解决了三种不同类型的基板的性能。为了评估传感器的性能，已通过在气候室上用20 Hz至200 kHz的LCR表测量了传感器的阻抗，在20°C时相对湿度从30％扫至80％。结果表明，由于基材介电常数和纱线粗细的增加，织物基材决定了传感器的电性能。这种对传感器的依赖性决定了用于开发可湿性测量湿度应用的最佳基材。