Development of Automated BCI System to Assist the Physically Challenged Person Through Audio Announcement With Help of EEG Signal
Authors: Rajashekhar U , Neelappa Neelappa 
Published: May 2021

Individuals face numerous challenges with many disorders, particularly when multiple disfunctions are diagnosed and especially for visually effected wheelchair users. This scenario, in reality creates in a degree of incapacity on the part of the wheelchair user in terms of performing simple activities. Based on their specific medical needs confined patients are treated in a modified method. Independent navigation is secured for individuals with vision and motor disabilities. There is a necessity for communication which justifies the use of virtual reality (VR) in this navigation situation. For the effective integration of locomotion besides, it must be under natural guidance. Electroencephalography (EEG), which uses random brain impulses, has made significant progress in the field of health. The custom of an automated audio announcement system modified to have the help of Virtual Reality (VR) and EEG for training of locomotion and individualised interaction of wheelchair users with visual disability is demonstrated in this study through an experiment. Enabling the patients who were otherwise deemed incapacitated to participate in social activities, as the aim was to have efficient connections. The natural control, feedback, stimuli, and protection these subsequent principles founded this project. Via properly conducted experiments, a multilayer computer rehabilitation system was created that integrated natural interaction assisted by EEG, which enabled the movements in the virtual environment and real wheelchair. For blind wheelchair operator patients this study involved of expounding the proper methodology. For educating the value of life and independence of blind wheelchair users, outcomes proven that VR with EEG signals has that potential. To protect their life straightaway and to report all these disputes, the military system should have high speed, more precise portable prototype device for nursing the soldier health, recognition of solider location and report about health sharing system to the concerned system. FPGA-based soldier’s health observing and position gratitude system is proposed in this paper. Reliant on heart rate which is centred on EEG signals the soldier health is observed in systematic bases. By emerging Verilog HDL programming language and executing on Artix-7 development FPGA board of part name XC7ACSG100t the whole work is approved in a Vivado Design Suite. Classification of different abnormalities, and cloud storage of EEG along with type of abnormalities, artifact elimination, abnormalities identification based on feature extraction, exist in the segment of suggested architecture. Irregularity circumstances are noticed through developed prototype system and alert the physically challenged (PHC) individual via audio announcement. An actual method for eradicating motion artefacts from EEG signals that have anomalies in the PHC person's brain has been established, and the established system is a portable device that can deliver differences in brain signal variation intensity. Primarily the EEG signals can be taken and the undesirable artifact can be detached, later structures can be mined by DWT these are the two stages through which artifact deletion can be completed. The anomalies in signal can be noticed and recognized by using machine learning algorithms known as Multirate SVM classifiers, when the features have been extracted using a combination of HMM and GMM. Intended for capable declaration about action taken by a blind person, these result signals are protected in storage devices and conveyed to the controller. Pretending daily motion schedules allows the pretentious EEG signals to be caught. Aimed at the validation of planned system, the database can be used and continued with numerous recorded signals of EEG. The projected strategy executes better in terms of re-storing theta, delta, alpha, and beta (TDAB) complexes of the original EEG with less alteration and a higher signal to noise ratio (SNR) value of the EEG signal which illustrates in the quantitative analysis. The projected method used Verilog HDL and MATLAB software for both formation and authorization of results in order to yield improved results. Since from the achieved results, it is initiated that 32% enhancement in SNR, 14% in MSE and 65% enhancement in recognition of anomalies, hence design is effectively certified and proved for standard EEG signals datasets on FPGA.