荧光原理的纸基张力传感器  

Paper-based tension sensor using the fluorescence mechanism

作　　者：刘德全 张巍巍[1] 伍林芳 李凤[1] 叶强[2] Liu Dequan;Zhang Weiwei;Wu Linfang;Li Feng;Ye Qiang(Jiangxi Engineering Laboratory for Optoelectronics Testing Technology,Nanchang Hangkong University,Nanchang 330063,China;School of Physical Education and Humanities,Nanjing Sport Institute,Nanjing 210014,China)

机构地区：[1]南昌航空大学江西省光电检测技术工程实验室,南昌330063 [2]南京体育学院体育教育与人文学院,南京210014

出　　处：《仪器仪表学报》2022年第5期8-14,共7页Chinese Journal of Scientific Instrument

基　　金：国家自然科学基金(62005113);江西省主要学科学术与技术带头人-领军人才项目(20204BCJL22041);江苏省教育厅自然科学重大项目(17KJA330001);南昌航空大学研究生创新专项资金(YC2021-090)项目资助。

摘　　要：针对穿戴应用中传统传感器的穿戴体验差、成本高、构造复杂等问题,本文将具有形变响应特性的荧光材料与纸张结合,构建出荧光压谱原理的新型光学无线张力传感器。传感器的敏感材料是由罗丹明B(RhB)与PDMS混合成的复合荧光材料薄膜,通过丝网印刷方式涂敷到美工纸带上。RhB的荧光特征随着施加在纸带上的张力而改变,在自制的力加载实验台上标定了该传感器的响应函数,在6 N量程里其张力分辨率可达0.04 N。借助手环和指套将该纸基张力传感器穿戴贴合于手部拇指关节,实验证实可测量手指的屈伸姿态。这是首款基于非波导特性的光学力敏可穿戴器件,具有柔性、亲肤、易回收、极低成本、几乎没有环境污染等显著优点,可作为即用即抛的消费级传感产品用于人体健康评估、关节康复锻炼效果评价和机器人姿态控制。The wearable sensors have problems of poor experience,high cost and complex construction.To address these issues,an optically wireless tension sensor is developed with strain-sensitive fluorescent material painted on paper.The novel flexible probe uses the mixture of Rhodamine B(RhB) and PDMS as sensing material and the composite is screen printed onto a piece of fine art paper.The fluorescence characteristics of RhB are found linearly depending on the tension applied to the paper slice.Therefore,the sensing functions of the paper-based fluorescence sensor are calibrated on a customized force loading test bench.The constructed sensor is assembled to a wearable device.Then,the finger flexion could be successfully detected by the fluorescence.The finest resolution of the prepared sensor is 0.04 N over a measuring range of 6 N.This study presents an optical wearable tensiometer employing a non-lightguide principle for the first time.It has potential application in human health evaluation,rehabilitation exercise and joint posture monitoring.

关 键 词：纸基传感器 张力 荧光 

分 类 号：TH811[机械工程—仪器科学与技术]