Research On Skin Impedance Measurement Technology Based On Electric Acupuncture

The precise positioning of meridian points or pain points is the premise of TCM acupuncture treatment,and the accuracy of positioning will directly affect the efficacy of TCM acupuncture diagnosis and treatment.The traditional positioning method of traditional Chinese medicine is greatly affected by the level of experience of traditional Chinese medicine acupuncturists.This brings obstacles to the follow-up TCM acupuncture treatment.At the pain point or meridian point of the human body,the impedance of the human skin has a lower value than the surrounding impedance.This phenomenon reflects the low impedance characteristics of human tissue.The research on this feature has gone through the stages of principle analysis,experimental verification and clinical application,and has been widely scientifically confirmed.Based on the low impedance characteristics of human body and the experience of TCM clinical diagnosis and treatment,the paper designs an embedded measurement system to quickly determine the location of meridian acupoints or pain spots.The system combines impedance measurement with meridian point or pain point location positioning,which improves the efficiency of TCM diagnosis and lays the foundation for subsequent electro-acupuncture treatment.Firstly,the paper makes an in-depth analysis of the domestic and foreign theories related to the low impedance characteristics of human body,establishes a skin impedance cole-cole model and uses least squares to extract the four unknown parameters of the model..After that,the impedance measurement principle of the AD5933 chip is explained and the algorithm for solving the impedance value is given.Finally,the paper describes the key issues in the system design process and the environmental impact factors in the impedance measurement process.On the basis of completing the above work,the paper gives the design scheme of the human body impedance measurement system based on the embedded platform.The system design can be divided into three parts: hardware circuit design,system software design,system verification and analysis.Firstly,according to the functional requirements of the system,the paper designs the embedded hardware platform with the idea of modularization,and gives the detailed design process of the main hardware modules of the system,namely the speech interaction module,impedance acquisition module,information storage module and wifi communication module.The software design of the system is based on the embedded hardware platform.This part in detail elaborated the system software design ideas and processes,including system initialization,the impedance value of the measurement and visualization of upper machine.System verification and analysis including testing and analysis of the impedance measurement module,data transmission and storage of functional verification,and finally to validate the effectiveness of the whole system.The final test results show that the system can accurately identify the position of the meridians and meridians of the human body,and transmit the measured results to the top machine for display through the Wi Fi module.At the end of the paper,the research and design work of the whole skin impedance measurement system is summarized,and the future research on skin measurement technology is prospected in conjunction with the shortcomings of the system research.