Interface system of human brain and manipulator in micro-power wireless communication mode

Abstract

The invention relates to an interface system of a human brain and a manipulator in a micro-power wireless communication mode, which belongs to the intercrossed field of biomedical engineering and mechanical electronic engineering. The interface system comprises a signal acquisition device, a signal analysis module finished by a computer, and a wireless communication module, wherein the signal acquisition device acquires electroencephalogram signals; the electroencephalogram signals enter the computer, and the signal analysis module adopts power spectrum density analysis to detect the power spectrum densities of frequency points A, B and C of the electroencephalogram signals; the frequencies of the three points A, B and C are between 2 and 30 Hz; when the power spectrum densities of the frequency points is between 2 and 50 microvolts, the characteristic information of the frequency points is 1, otherwise, the characteristic information of the frequency points is 0; and the electroencephalogram signals form the characteristic information consisting of three binary numeral values, and the characteristic information is sent to the manipulator through the wireless communication module. The interface system adopts a multi-channel electroencephalogram data acquisition mode, a wireless mode can better solve the problem, and the interface system is convenient for a user to wear.

Description

technical field [0001] The invention belongs to the intersecting field of biomedical engineering and mechatronic engineering, and relates to a behavior of a manipulator controlled by brain thinking. In the whole system, the electroencephalogram signal (EEG) is combined with the manipulator, and the signal that effectively controls the action of the manipulator is extracted from the EEG, and then converted into a control signal, and the frequency shift keying (FSK) modulation method is used to control the manipulator. Power wireless communication to control the movement of the manipulator. Background technique [0002] In 2008, the "Nature" magazine published the latest research results of the University of Pittsburgh. The experimenters implanted a microelectrode array into the motor area of ​​the rhesus monkey brain, collected the discharge signals of multiple nerve cells, and converted them into control commands for the electric prosthesis after real-time processing by the...

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Problems solved by technology

[0005] At present, the EEG signal extraction and identification equipment and the manipulator control equipment mostly use the direct connection of signal lines. Such a connection will inevitably bring a lot of inconvenience to the user, and often lead to a decrease in system reliability due to the contact problem of the signal transmission line.

The action of the manipulator is completed by the joints such as the motor driven fingers, which will inevitably bring about large electrical interference. If the above two units are connected through communication lines, not only the reliability of signal transmission will decrease, but also the interference of the motor action will Affect the EEG measurement and analysis link

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