Mechanical arm control system based on motor imagery electroencephalograms

Abstract

The invention discloses a mechanical arm control system based on motor imagery electroencephalograms. The mechanical arm control system based on the motor imagery electroencephalograms comprises an EEG signal obtaining module obtained by an acquiring computer module and a stimulating computer module; signals are acquired through an amplifier and Scan software; the amplifier uses a cable for transmitting data with a computer, and uses a USB wire for power supply; forty rows of insertion holes are arranged below the amplifier for directly connecting electroencephalogram acquiring caps in the acquiring computer module; and lead placing positions of the electroencephalogram acquiring caps are placed according to 10-20 international standard placing method. The mechanical arm control system based on the motor imagery electroencephalograms can extract out obviously change signals in the imagery process through analysis to master the brain internal potential change regularity of brains in themotor imagery activity process so as to control up-down movement of mechanical arms.

Description

technical field [0001] The invention relates to a control system, in particular to a control system of a mechanical arm based on motor imagery electroencephalogram signals. Background technique [0002] The robotic arm is a control system composed of computer, electronic technology, machinery and electrophysiological signal processing and other disciplines. The control source of the robotic arm can be controlled by EEG signals, EMG signals, voice signals, etc. With the development of science and technology, the technology of controlling the external environment through voice has gradually matured. However, for the mechanical arm, more consideration is given to the ease of use of the arm, and controlling the mechanical arm through voice for a long time will give the subjects cause discomfort. EEG signal control is a method that is very suitable for the movement of the robotic arm. It acquires the corresponding control information of the robotic arm by collecting the changes...

AI Technical Summary

Problems solved by technology

[0003] At present, there are also studies in China that use imaginary EEG signals to control the movement of external devices, but due to poor signal acquisition equipment and strong interference of external devices, the control effect needs to be improved, such as analyzing EEG during imaginary left and right movements The ERD / ERS component in the signal can well distinguish whether the subject is imagining left or right

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