碳纤维温度传感器的感温机理及其应用研究  

Temperature Sensing Mechanism and Application of Carbon Fiber Temperature Sensor

作　　者：郑锦涛 温锦秀[1] 胡晓燕 胡凤鸣 陈国宁 黄景诚 陈智明 罗坚义[1,3] ZHENG Jintao;WEN Jinxiu;HU Xiaoyan;HU Fengming;CHEN Guoning;HUANG Jingcheng;CHEN Zhiming;LUO Jianyi(Research Center of Flexible Sensing Materials and Devices,School of Applied Physics and Materials,Wuyi University,Jiangmen Guangdong 529020,China;Department of Intelligent Manufacturing,Wuyi University,Jiangmen Guangdong 529020,China;WYU-Flexwarm Joint Lab for Flexible Sensing Technologies,Guangdong Flexwarm Advanced Materials&Technology Coo.,Ltd.,Guangzhou Guangdong 511483,China)

机构地区：[1]五邑大学应用物理与材料学院柔性传感材料与器件研究中心,广东江门529020 [2]五邑大学智能制造学部,广东江门529020 [3]五邑大学柔性传感技术联合实验室,广东柔性先进材料技术合作社有限公司,广东广州511483

出　　处：《传感技术学报》2022年第4期461-466,共6页Chinese Journal of Sensors and Actuators

基　　金：国家自然科学基金(12004285);广东省基础与应用基础研究基金(2019A1515111190);五邑大学-港澳联合研发基金(2019WGALH03);五邑大学青年教师科学基金(2018td04);广东省自然科学基金(2021A1515011935);广东省创新强校工程基金(2020ZDZX2022);广东省合作办学平台([2016]31);江门市科技项目([2017]307,[2017]149);广东省高等教育光电材料与应用重点实验室(2017KSYS011);广东大学生科技创新培育专项资金项目(pdjh2021b0509)。

摘　　要：碳基材料的温度传感机理研究报道中很少讨论碳材料的固有杂质对温度响应的影响,因此选择了杂质和缺陷较多的碳纤维丝束作为研究对象,研究杂质散射机理与其温度响应的关系。基于杂质散射机理和碳纤维的几何特点,分析了碳纤维的感温机理,并提出了相应的温度标定公式,即碳纤维在123.15 K至423.15 K的宽温度范围内,电导G对温度T^(3/2)具有良好的线性响应。两者的变化量可定义为碳纤维丝束温度传感器的灵敏度,此温度传感器的灵敏度可以通过灵活调控碳纤维的几何结构和化学掺杂来改变,这进一步验证了碳纤维的电荷传输行为在123 K~423 K的温度范围都符合杂质散射。此外,结合温度标定公式和无线蓝牙电路,设计出一种响应时间快达0.6 s的便携式柔性温度传感器,可快速、实时地监测人体和环境温度。In research reports on the temperature sensing mechanism of carbon-based materials,the influence of the inherent impurity on the feature of temperature response of the materials is rarely discussed.The carbon fiber beam with impurities and defects is used to study the relationship between the impurity scattering mechanism and the temperature response effect.According to the impurity scattering mechanism,the temperature sensing mechanism model and temperature calibration formula is proposed,i.e.,the conductance(G)of carbon fibre is linearly related to the square root of the cube of the temperature value(T^(3/2))in the temperature range of 123.15 K to 423.15 K.In the meantime,the sensitivities of carbon fiber temperature sensors can be tuned by chemical doping and beam geometry,further verifying that the charge transport behavior of the carbon fiber is in accordance with the impurity scattering mechanism in the aferementioned temperature range.Additionally,based on a the temperature calibration formula,a portable carbon fiber beam temperature measurement device is fabricated using bluetooth circuit.The response time of this device is only 0.6 s,and this device can be used to monitor the temperature of human body and environment fast and in real time.

关 键 词：杂质散射机理 碳纤维 标定公式 柔性温度传感器 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TQ342.74[自动化与计算机技术—控制科学与工程]