基于离电式压力传感器的超灵敏电子皮肤OA

In order to solve the problem of low sensitivity of traditional flexible pressure sensors,polyvinyl alcohol and 1-butyl-3-methylimidazolium hexafluorophosphate are used as materials to prepare an ultra-sensitive ion type flexible pressure sensor based on the irregular convex microstructure naturally formed on the surface of sandpaper,and the anti-freezing and moisturizing properties of sensor are improved by introducing glycerol.The preparation process of sensors is elaborated on,the ratio of composite material systems with optimal performance is explored,the mechanism of high sensitivity of sensors is analysed,and tests the static and dynamic characteristics of sensors are tested to verify their stability under long-term conditions.The results show that the designed ion type flexible pressure sensor has high sensitivity(12.1 kPa-1 within 0～250 kPa),high linearity(R=0.982 within 0～250 kPa)and fast response time(37 ms),and has a certain anti-freezing moisturizing effect.The designed sensing unit is prepared into a 5×5 pressure sensitivity electronic skin and integrated into a flexible tactile finger,and the electronic skin is applied to tasks such as gripping plugs and fibers.The results show that the introduction of tactile intelligence can correctly recognize the position of objects and perform stable gripping,which has important application value in the field of robot inspection.