压力分布监测袜的制备及其传感性能
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摘要
为探讨纬编针织柔性传感器的导电性能及其应用,以不锈钢颗粒质量分数为20%的粘胶导电纤维与锦纶,通过纬平针一体成型工艺,制备了含有3块压力传感模块及3条针织导线的一体成型压力分布监测袜。采用自行搭建的应力及电阻同步记录仪测试了袜子面内压力传感部位的电阻变化,并研究了该压力传感部位的应力与电阻的关系及反复压缩电阻的稳定性和可靠性。结果表明:不同压力传感部位的应力与电阻呈反比例关系;在应力增加的情况下,该针织压力传感器的电阻和灵敏度值均减小;在不同的应力循环中,传感器具有良好的曲线特征;在35 k Pa应力循环下,传感器表现出良好的稳定性和重复性。
In order to investigate the electrical conductivity and application of the weft knitted flexible sensor,the viscose conductive fiber and nylon fiber with 20% stainless steel particle content were adopted to prepare one-piece pressure distribution monitoring socks comprising three integrated pressure sensing modules and three knitting wires. The resistance change of the pressure sensing part in the surface of the socks was tested by the self-built pressure and resistance synchronous recorder. The relationship between the stress and the resistance of the pressure sensing part and the stability and reliability of the repeated compression resistance were studied. The results show that the stress and resistance of different pressure sensing parts are inversely proportional. In the case of increased stress,the resistance and sensitivity values of the knitting pressure sensor are reduced. In different stress cycles,the sensor has good curve characteristics. The sensor exhibits good stability and repeatability under a stress cycle of 35 kPa.
In order to investigate the electrical conductivity and application of the weft knitted flexible sensor,the viscose conductive fiber and nylon fiber with 20% stainless steel particle content were adopted to prepare one-piece pressure distribution monitoring socks comprising three integrated pressure sensing modules and three knitting wires. The resistance change of the pressure sensing part in the surface of the socks was tested by the self-built pressure and resistance synchronous recorder. The relationship between the stress and the resistance of the pressure sensing part and the stability and reliability of the repeated compression resistance were studied. The results show that the stress and resistance of different pressure sensing parts are inversely proportional. In the case of increased stress,the resistance and sensitivity values of the knitting pressure sensor are reduced. In different stress cycles,the sensor has good curve characteristics. The sensor exhibits good stability and repeatability under a stress cycle of 35 kPa.
引文
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[2]MARKUS R,PHII L M,FRANK C.Textile pressure sensor made of flexible plastic optical fibers[J].Sensors,2008,8(7):4318.
[3]CATRYSSE M,PUERS R,HERTLEER C,et al.Towards the integration of textile sensors in a wireless monitoring suit[J].Sensors&Actuators A Physical,2004,114(2):302-311.
[4]TAO L Q,ZHANG K N,TIAN H,et al.Graphenepaper pressure sensor for detecting human motions[J].Acs Nano,2017,11(9):8790.
[5]LUO N,DAI W,LI C,et al.Wearable sensors:flexible piezoresistive sensor patch enabling ultralow power cuffless blood pressure measurement[J].Advanced Functional Materials,2016,26(8):1303-1305.
[6]MATTMANN C,CLEMENS F,TROSTER G.Sensor for measuring strain in textile[J].Sensors,2008,8(6):3719.
[7]王钰,李斌.柔性触觉传感器主要技术[J].传感器与微系统,2012,31(12):1-4.WANG Yu,LI Bin.Main techniques of flexible tactile sensors[J].Journal of Sensors and Microsystems,2012,31(12):1-4.
[8]金曼,丁辛,甘以明,等.足底压力分布测量鞋垫的研制[J].纺织学报,2010,31(9):114-117.JIN Man,DING Xin,GAN Yiming,et al.A sensing insole for measuring plantar pressure distribution[J].Journal of Textile Research,2010,31(9):114-117.
[9]TAKAHIRO T,KEI K,SYOJI K,et al.On optimal operator for combining left and right sole pressure data in biometrics security[J].Advances in Fuzzy Systems,2013(1):1-10.
[10]李新阳.保健压力袜工艺与压力分布的研究[D].杭州:浙江理工大学,2015:7-13.LI Xinyang.Research on process and pressure distribution of health pressure socks[D].Hangzhou:Zhejiang Sci-Tech University,2015:7-13.
[11]蔡倩文,王金凤,陈慰来.纬编针织柔性传感器结构及其导电性能[J].纺织学报,2016,37(6):48-53.CAI Qianwen,WANG Jinfeng,CHEN Weilai.Structures and electrical properties of weft-knitted flexible sensors[J].Journal of Textile Research,2016,37(6):48-53.
[12]许杰.基于银纳米线的柔性薄膜压力传感器的研究[D].天津:天津工业大学,2017:46-52.XU Jie.Research on flexible film pressure sensor based on silver nanowire[D].Tianjin:Tianjin Polytechnic University,2017:46-52.
[13]ZHONG W,LIU Q,WU Y,et al.A nanofiber based artificial electronic skin with high pressure sensitivity and 3D conformability[J].Nanoscale,2016,8(24):12105.
[14]SU B,GONG S,MA Z,et al.Mimosa-inspired design of a flexible pressure sensor with touch sensitivity[J].Small,2015,11(16):1886.
[15]NIWA M.The finite deformation theory of plain weave fabrics:part I:the biaxial deformation theory[J].Journal of The Textile Institute,1973,64(1):21-46.
[16]王建,崔书华,邱鹏.传感器实用技术[M].北京:机械工业出版社,2012:7-18.WANG Jian,CUI Shuhua,QIU Peng.Practical Technology of Sensors[M].Beijing:Mechanical Industry Press,2012:7-18.
[17]王明鑫,俞光荣,陈雁西,等.正常中国成年人足底压力分析[J].中国矫形外科杂志,2008,16(9):687-690.WANG Mingxin,YU Guangrong,CHEN Yanxi,et al.Analysis of plantar pressure in normal chinese adults[J].Chinese Journal of Orthopaedics,2008,16(9):687-690.