Flexible Hybrid Electronic System For Human ECG And Acceleration Signal Monitoring

Wearable flexible hybrid electronic system refers to an electronic system that can be worn on the skin of the human body in order to achieve specific functions.The system is required to have easy stretch flexibility,good biocompatibility and work stability.However,the current flexible hybrid electronic system still has the problems of complicated manufacturing process,low integration density,and low stretchability,etc.The main technical difficulty lies in the structural and process design of conductor stretching,chip mounting and strain separation under the combination of soft and hard materials.To this end,a new type of flexible hybrid electronic system has been developed and prepared in this paper.The main research contents of this article are as follows:(1)Based on flexible and stretchable requirements,select new stretchable conductive composite material(Electrical Conductive Componentes,ECC)and Polydimethylsiloxane(PDMS)as the conductive material and substrate material of this system,respectively.Design and prepare a signal acquisition and wireless transmission circuit system to realize the high-resolution human electrocardiogram waveform and acceleration signal graph of the subject displayed on the mobile terminal;(2)Develop a system integration solution and device manufacturing method of the wearable flexible hybrid electronic system with multilayer electrical connections based on the new stretchable conductive composite material(ECC)and a flexible PDMS substrate,so as to simplify the manufacturing process as much as possible and solve a series of problems in the process.Directly build the circuit model based on the FR4 rigid substrate on the stretchable flexible material substrate,and solve a series of circuit application problems during the transition of the circuit model from a rigid substrate to a flexible substrate;(3)Complete the design of the strain separation structure of the circuit and apply it to the designed flexible hybrid circuit system to make its preparation process steps compatible with other process steps of the system production,and use Abaqus finite element mechanics simulation software to perform biaxial tensile simulation analysis on the manufactured system to verify its tensile functionality;(4)Perform application tests on the completed flexible hybrid electronic system to make it fit well with the human skin,and stably transmit real-time and accurate ECG signals and acceleration signals to the mobile phone terminal,and compare and analyze related signals with commercial devices to verify its reliability,stability,portability and practicability.And at last,complete the application of flexible hybrid electronic system in wearable health monitoring.The new flexible hybrid electronic system developed in this paper has the advantages of simplified process,high integration density and strong stretchability,and can maintain the stability under stretch conditions compared with the previous flexible electronic systems.The system provides an integrated solution with better performance for health monitoring,which has stable functions and reliable signals and has strong practicability and medical diagnostic value.