基于应力发光材料的肢体运动压力可视化测量  

Dynamic Limb-pressure Visualization and Measurement Based on Mechanoluminescent Materials

作　　者：毛少辉 陈冰 郑元钿 李旭 黄泽锋 傅愉 雷耀虎[1] 王春枫 曲思岑 彭登峰 MAO Shao-hui;CHEN Bing;ZHENG Yuan-tian;LI Xu;HUANG Ze-feng;FU Yu;LEI Yao-hu;WANG Chun-feng;QU Si-cen;PENG Deng-feng(School of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518061, China;Shenzhen Key Laboratory of Intelligent Optical Measurement and Detection, Shenzhen 518061, China;Sports Department, Shenzhen University, Shenzhen 518061, China)

机构地区：[1]深圳大学物理与光电工程学院,广东深圳518061 [2]深圳市智能光测与感知重点实验室,广东深圳518061 [3]深圳大学体育部,广东深圳518061

出　　处：《发光学报》2021年第4期397-403,共7页Chinese Journal of Luminescence

基　　金：国家自然科学基金(61875136,52002246,11972235);广东省自然科学基金(2020A1515011315);深圳市高层次人才项目基金(000279);深圳大学青年教师启动基金第二期(000002110223);深圳市智能光测与感知重点实验室基金(ZDSYS20200107103001793)资助项目。

摘　　要：应力发光是机械外力作用于应力发光材料时的发光现象。应力发光材料,尤其是弹性应力发光材料在应力可视化传感领域有着重要的应用前景。基于弹性应力发光材料的发光强度与应力大小的线性特征规律,该材料可以用来制成检测应力强度以及位置的应力分布传感器,实现动态应力的非破坏性检测和应力可视化。人体肢体的动态压力分布能反映出肢体的结构、体姿势的受力和运动状态,甚至是人体健康状态等信息。通过对肢体压力的测试和分析,可获取人体在各体态和运动下的生理和机能参数,这对临床医学诊断、生物力学及体育运动均有重要意义。本文首先利用固相法制备具有绿光发射的SrAl_(2)O_(4)∶Eu^(2+)(SAO-E)应力发光材料,进而利用SAO-E和硅橡胶(Ecoflex复合)制成的柔性应力发光薄膜来采集肢体(足/手/拳)压力图像,不仅达到了肢体压力大小可视化的目的,而且还能够分析不同位置压力大小的分布情况。与传统的测量方式相比,基于应力发光材料的运动肢体压力测量方法直接可视化,不仅提升了辨识度,还可以得到压力细节特征,同时也为运动健康监测提供了一种新的思路。Mechanoluminescence(ML)is the light-emitting phenomenon of materials excited by external mechanical forces.ML materials,especially elastic-mechanoluminescent(EML)ones,have important applications for visualization sensing of stress/strain.Based on the reproducible properties of EML materials and the liner relationship between luminescent intensity and stress value,it can be used to make an intelligent stress distribution image sensor that detects the stress intensity and the location of structure,so as to realize the non-destructive detection and stress visualization of dynamic force of movement of human body.The dynamic pressure distribution of the human body can reflect the condition of the body,the force and movement state of the body posture,and even the health of the human body.Through the test and analysis of limb pressure,it can obtain the physiological and functional parameters of the human body under various postures and exercises,which are of great significance for clinical medical diagnosis,biomechanics and sports.In this article,the solid-state reaction method is applied to prepare the SrAl_(2)O_(4)∶Eu^(2+)(SAO-E)EML material with green light emission,and then the SAO-E and silicone rubber(Ecoflex composite)are prepared to design a flexible membrane.The membrane is used to collect limb pressure images,which can not only achieve the visualization purpose of dynamic pressure,but also analyze the distribution of pressure at different positions of the limb.Compared with traditional measurement methods,the limb pressure measurement method based on EML materials can be directly visualized,which not only improves the recognition,but also obtains the detailed characteristics of the pressure,and also provides a new way of thinking for foot health monitoring.

关 键 词：应力发光 发光 压力监测 SRAL2O4 

分 类 号：O482.31[理学—固体物理]