基于碳化丝布的高灵敏选择性二维电阻式应变传感器

Highly Sensitive and Selective Two-Dimensional Resistance Strain Sensor Based on Carbonized Silk Fiber

柔性应变传感器在人体运动检测中起到至关重要的作用。本研究基于捻度取向不同的碳化丝布,提出了一种具有高灵敏、大应变范围和高选择性的二维柔性电阻式应变传感器,该传感器可以有效识别平面内应变的方向及大小,灵敏度(GF)可达18.70,应变检测范围达100%,x轴与y轴达100以上的灵敏度差异倍率,且具有500次以上的循环拉伸稳定性,可以实现应变大小与方向的传感检测。

Flexible strain sensor plays an important role in human motion detection. This study based on carbonized silk fiber with different twist orientations presents a kind of high sensitivity, large strain range and high selectivity of two-dimensional flexible resistive strain sensor. The sensor can effectively identify the direction and size of the strain in the plane. The sensitivity (GF) of the sen-sor can reach 18.70, the strain detection range can reach 100%, the sensitivity ratio of X axis to Y axis is more than 100 times, and has more than 500 times of cyclic tensile stability, which can real-ize the sensing detection of strain size and direction.