Design Of Synchronous Acquisition System Of EEG-EMG-inertial Information

With the development of science and technology,the application of multi-physiological signal detection technology in various scientific fields and life has been gradually popularized,and the addition of a new type of inertial sensing technology can provide a reliable reference for the study of exercise capacity in the collection of physiological electrical signals.It will help to obtain more detailed physical and external physical information and make the collection system more comprehensive and complete.This paper proposes the concept of EEG-EMG-inertial information synchronization acquisition.Through the design of high-performance circuits,embedded hardware integration,Wi-Fi nodal synchronization networking,and data application terminals,the EEG-EMG-inertial information acquisition is synchronized.System development.And for the experimental process,the EEG-EMG-inertial information analysis method was designed and compared to verify the effectiveness of the system.The specific work of this article is as follows:Firstly,the development of electrophysiological research was introduced.According to the features and insufficiency of the current acquisition equipment in the market,a design scheme for the simultaneous acquisition of EEG-EMG-inertial information is proposed,and brain electricity,myoelectric signals,and inertial information are analyzed.The acquisition principle,system structure,system design parameters,and system development process are described in detail.The technical parameters and design requirements of the acquisition system are described in detail.Secondly,the hardware part of the EEG-EMG-inertial information synchronization acquisition system was designed.Taking the performance indicators such as high input impedance,high common mode rejection ratio,low noise,and low drift as the starting point,and conditioning the circuit from multi-parameter physiological signals,The detailed analysis of the inertial information capture circuit,power supply system,and embedded hardware integration introduced the development of the hardware system.Through simulation analysis and oscilloscope hardware circuit testing,the parameter performance of the hardware circuit was verified.Thirdly,the software part of the EEG-EMG-inertial information synchronization acquisition system was designed.The embedded node programming design,data synchronization transmission network design and data application platform design are described.Lastly,based on the EEG-myoelectric-inertial information synchronization acquisition system,a multi-parameter physiological signal synchronization acquisition experiment was designed to obtain functional information on the forehead surface EEG,the EMG of arm and inertial information through multiple parameter device nodes.Tests and comparisons with similar devices on the market have further validated the effectiveness of the EEG-EMG-inertial information synchronization acquisition system.