A capacitive sliding tactile sensor with high sensitivity relates to a sliding tactile sensor. A contact layer, an upper electrode, a dielectric layer, a lower electrode and a base layer are arranged; the top of the contact layer is a convex structure, and the bottom of the contact layer is connected with the upper electrode circuit. The size and shape of the upper and lower electrodes are the same as the upper surface of the convex structure at the top of the contact layer, and they are all located in the center of the capacitive sliding tactile sensor; the dielectric layer adopts nanofibre film, and the upper surface of the dielectric layer is the same as the upper surface of the convex structure at the top of the contact layer. The lower surface is in contact with the upper and lower electrodes, the bottom of the contact layer and the top of the base layer; the upper surface of the base layer is equipped with four electrodes with symmetrical cross distribution, and the capacitance values of the four electrodes change when the sensor contacts are sliding in contact with the object; the nanofibre membrane has spatial elasticity and can sensitively perceive the application of positive force; and the surface of the nanofibre membrane is subjected to lateral force. It has high free energy, is conducive to relative sliding, and improves the sensitivity of lateral force detection.
【技术实现步骤摘要】
一种高灵敏度的电容式滑触觉传感器
本专利技术涉及滑触觉传感器,尤其是涉及纳米纤维为介电层的一种高灵敏度的电容式滑触觉传感器。
技术介绍
随着柔性传感器的蓬勃发展,传感器不仅要具备触觉感知的基本能力,还要能够准确地获取空间三维力的信息,因此对滑动信息的检测在触觉传感领域占据着愈加重要的位置。电容式传感器以其零温漂、结构简单以及容易实现大面积制造等优点获得普遍青睐。但是目前现有柔性滑触觉传感器依然受到量程小、灵敏度低等问题的困扰。现有技术中,密歇根大学LeeHK等人[LeeHK,ChungJ,ChangSI,etal.NormalandShearForceMeasurementUsingaFlexiblePolymerTactileSensorWithEmbeddedMultipleCapacitors[J].JournalofMicroelectromechanicalSystems,2008,17(4):934-942.]以空气为介电层利用PDMS的柔性支撑机构,将四个铜电极嵌入PDMS基材的方式感知空间三维力,具备较高灵敏度,但量程较小。东京大学NodaK等人[NodaK,MatsumotoK,ShimoyamaI.Stretchabletri-axisforcesensorusingconductiveliquid.Sensors&ActuatorsAPhysical,2014,215(16):123-129.]引入微流道技术,创造性地采用导电流体作为电极,器件具有良好的稳定性以及拉伸性能,但是灵敏度较低。中国专利CN103954382B公开一 ...
【技术保护点】
1.一种电容式滑触觉传感器,其特征在于设有触头层、上层电极、介质层、下层电极和基底层;所述触头层顶部为凸起结构,触头层底部与上层电极电路贴合,上层电极的上下底面积大小及形状与触头层顶部的凸起结构上表面一致,且均位于电容式滑触觉传感器中心;介质层采用纳米纤维膜,介质层的上下表面与上层电极和下层电极及触头层底部、基底层顶部接触;基底层上表面设有呈对称十字分布4个电极,传感器表面触头受到物体接触与滑动时,4个电极对应电容发生变化。
【技术特征摘要】
1.一种电容式滑触觉传感器,其特征在于设有触头层、上层电极、介质层、下层电极和基底层;所述触头层顶部为凸起结构,触头层底部与上层电极电路贴合,上层电极的上下底面积大小及形状与触头层顶部的凸起结构上表面一致,且均位于电容式滑触觉传感器中心;介质层采用纳米纤维膜,介质层的上下表面与上层电极和下层电极及触头层底部、基底层顶部接触;基底层上表面设有呈对称十字分布4个电极,传感器表面触头受到物体接触与滑动时,4个电极对应电容发生变化。2.如权利要求1所述一种电容式滑触觉传感器,其特征在于所述介质...
【专利技术属性】
技术研发人员:吴德志,朱宇超,虞凌科,王广顺,吴益根,彭倩倩,
申请(专利权)人:厦门大学,
类型:发明
国别省市:福建,35
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