摘要
为了探究光纤FBG埋入仿生体中的传感性能,制备了一种光纤FBG柔性传感器,并对其温度和力觉的感知能力进行了探究。首先,介绍了FBG柔性传感器的结构及制作方法;接着,建立了柔性传感器的温度和压力传感模型,并使用有限元分析软件Abaqus对柔性传感器受压情况进行理论模拟;最后,对FBG柔性传感器和裸FBG传感器的温度和力觉感知能力进行了对比试验。试验结果表明,FBG柔性传感器灵敏度在升温和降温过程分别为13.14和11.06 pm/℃,是裸FBG传感器的1.3倍;静态压力加载过程和卸载过程分别为0.318 1和0.345 3 pm/g,比裸FBG传感器提高了3倍且线性相关系数为99.5%,较裸FBG传感器线性度好;检测通行载荷信号比裸FBG传感器强;20 g实心钢球从50 cm高度冲击应变值为38με,跟踪效果明显。该传感器灵敏度高且重复性好,对仿生体皮肤的触滑觉研究有一定的参考意义。
To explore the sensing performance of fiber bragg grating(FBG)embedded in the organisms,one kind of fiber FBG flexible sensor is developed.Its performance of sensing temperature and force is studied.First,the structure and manufacturing method of the FBG flexible sensor are introduced.Then,the temperature and pressure sensing model of the FBG flexible sensor are formulated.The pressure of flexible sensor is theoretically simulated by finite element analysis software Abaqus.Finally,comparison experiments between the FBG flexible sensor and the bare FBG sensor are implemented in terms of temperature and force perception.Experimental results show that the sensitivity of the flexible sensor during heating and cooling are 13.14 and 11.06 pm/℃,which are 1.3 times higher than those of the bare FBG sensor.The static pressures loading process and unloading process are 0.318 1 and 0.345 3 pm/g,respectively.These metrics are three times higher than those of bare FBG sensor.The linear correlation coefficient is 99.5%,which is better than that of bare FBG sensor.It has a stronger signal than bare FBG sensor for detecting the traffic load.The strain value of 20 g solid ball height from 50 cm is 38με,which illustrates the obvious tracking effective ness.The sensor has high sensitivity and good repeatability,which has a significant reference for the study of the bionic body tactile slip sense.
作者
王彦
秦楠
刘吉虹
梁大开
程竹明
Wang Yan;Qin Nan;Liu Jihong;Liang Dakai;Cheng Zhuming(School of Electrical and Information Engineering,Anhui University of Technology,Maanshan 243000,China;State Key Laboratory of Mechanics and Control of Mechnical Structures,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2019年第3期93-98,共6页
Chinese Journal of Scientific Instrument
基金
国家自然科学基金(51309001)
安徽省教育厅自然科学基金重点项目(KJ2017A041
KJ2018A0042)
安徽省科技厅面上公关项目(1704a0902033)资助
关键词
光纤FBG
柔性传感器
温度
压觉
动态
冲击力
fiber Bragg grating(FBG)
flexible sensor
temperature
pressure
dynamic
impact
