Collection,processing And Analysis System Of Multi Lead EEG Signal

Electroencephalogram(EEG)is a kind of important physiological signal in human body.When the human body is stimulated by the outside world or subjective thinking,the EEG signal will change.The researchers developed a variety of brain computer interface devices by collecting EEG changes.However,with the development of brain computer interface research,it is found that the brain computer interface device can not adapt to the increasingly complex control requirements.It is often costly to prepare several different types of brain computer interface devices.Therefore,this subject has carried on the thorough research to the multi lead electroencephalogram signal,and has developed a set of ADS1299EEG-FE based and C++ universal EEG signal acquisition,processing and analysis system.In this paper,based on a large number of brain computer interface technology and EEG data,we analyze the EEG filtering technology,and develop the design scheme of this subject.The design is divided into four modules: first,the use of ADS1299EEG-FE development board design of EEG signal preprocessing module.Multi stage amplification and analog to digital conversion of EEG signal.Secondly,using USB serial port to design the transmission module of EEG signal.Complete the EEG data coding,communication and analysis.Third,the use of C++ to complete the design of several EEG filter.It mainly includes 1-30 Hz band-pass filter,50 Hz notch filter,wavelet transform filter and common average reference filter.Fourth,according to the use of 3DMAX 3D modeling and graphics rendering window using VTK 3D model.The function of the whole system was verified by four brain function experiments.The system designed in this paper completes the acquisition,processing and analysis of multi lead EEG signals.A complete EEG signal processing framework is built.And through the three-dimensional display of the way,so that the staff can clearly see the brain function in the experiment to reflect the location of the brain region.To bring more intuitive and experimental experience of the experiment.