Brain control wheelchair system based on touch and auditory evoked potential

Abstract

The invention provides a brain control wheelchair system based on touch and auditory evoked potential. The brain control wheelchair system comprises a signal acquisition module, an initialization module, a parameter offline training module, a signal processing module, a touch and auditory stimulation module and a control module. The signal acquisition module collects and preprocesses electroencephalogram signals of a user. The initialization module conducts detection on resistance value of electrodes and sets parameters of electrode positions, the optimal Round number and a P300 classifier. The parameter offline training module obtains the optical electrode passageway and the optical Round number, and trains the P300 classifier. The signal processing module is used for extracting and recognizing P300 characteristics. The touch and auditory stimulation module exerts touch and auditory bimodal random stimulation on the user so that the P300 characteristic potential in electroencephalogram signals can be induced. The control module is used for generating a corresponding control instruction according to the P300 characteristic potential, converting the control instruction into a voltage signal and controlling a wheelchair to execute corresponding operation according to the voltage signal. The brain control wheelchair system is simple in principle, easy and convenient to obtain and high in control accuracy, and the operation efficiency of the system can be improved.

Description

technical field [0001] The invention relates to the fields of brain-computer interface technology and artificial intelligence technology, in particular to a brain-controlled wheelchair system based on tactile-auditory evoked potentials. Background technique [0002] The brain is the center of the human nervous system, responsible for controlling various neural activities such as people's cognition and perception, movement and coordination. For patients with severe motor dysfunction but normal brain function, although they have normal conscious activities, they cannot communicate with the outside world and are in a "self-locked" state. Such conditions include amyotrophic lateral sclerosis, spinal cord injuries, brainstem strokes and cerebral palsy, as well as locked-in syndrome in advanced stages. Patients with similar diseases are not only in a state of extreme pain themselves, but also add a heavy burden to their families and society. At present, issues such as improving ...

AI Technical Summary

Problems solved by technology

However, there has been no report on brain-controlled wheelchair methods based on auditory and tactile dual-modal stimulation

Images