基于导电织物的应变式柔性传感器

Strain Flexible Sensor Based on Conductive Fabric

设计了一种可承受大变形的电容式柔性应变传感器,采用硅胶材料作为介电层,导电织布作为柔性电极,给出其详细制备方式,并对制作的传感器样机性能进行测试分析。试验表明,该导电织物传感器迟滞性低、重复性好,应变率达到143%时其电容达到最大值,继续拉伸时传感器失效。该传感器用于手指弯曲试验的测试结果较好,并且在0°~100°内电容值与应变率近似呈线性关系。柔性传感器因其良好的柔韧性和适应性,常被用于智能机器人和可穿戴设备领域,用来检测非规则表面上的压力分布或用作机器人的触觉感知。

This paper designs a capacitive flexible strain sensor that can withstand large deformations.It uses silica gel as the dielectric layer and conductive woven fabric as the flexible electrode.The detailed preparation method is given,and the performance of the sensor prototype was tested and analyzed.Experiments showed that the conductive fabric sensor had low hysteresis and good repeatability.When the strain rate reached 143%,its capacitance reached the maximum value.When it continued to stretch,the sensor failed.The sensor used in finger bending experiments had good test results,and within 0°-100°,the capacitance value and the strain rate were approximately linear.Because of good flexibility and adaptability,flexible sensors are often used in the field of smart robots and wearable devices to detect pressure distribution on irregular surfaces or as tactile perception of robots.