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Virtual keyboard and robot control system by brain electric signal

A technology of EEG signal and control system, applied in the field of biomedical engineering, can solve problems such as stimulation and only English output

Inactive Publication Date: 2007-08-08
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0002] At present, some foreign scholars are researching the brain-computer interface (Brain-Computer Interface) technology based on EEG in the laboratory. The main purpose is to serve as a barrier subsidy for the disabled. There are IEEE Trans Rehab Eng 2000; 8: 190-192), P300 brain potential (references are in IEEE Trans Rehab Eng 2000; 8: 174-179), mu or beta wave brain potentials (references are in Trans Rehab Eng 2000; 8: 203-204) to control the computer and the surrounding electronic equipment; the function of the virtual keyboard to output text is also a passive way, that is, there must be specific light to stimulate the visual system of the subject, and only English can be output

Method used

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  • Virtual keyboard and robot control system by brain electric signal
  • Virtual keyboard and robot control system by brain electric signal
  • Virtual keyboard and robot control system by brain electric signal

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Embodiment Construction

[0074] Firstly, brain conduction electrodes are installed on the subject's head, and after a few minutes of training, the subject can be officially operated. Subjects can open eyes, eyes can also be closed, it all depends on the subject's own wishes. The subjects use their thinking to think about eyeballs up or down to generate EEG signals to complete different functions. If they want to output Chinese or English text on the computer monitor, they can use EEG signals to call out the corresponding codes (such as 00001 Output "a", 00110 0001110101 output "go") to complete the output of different text (such as "Hello", "I want to eat", etc.).

[0075] For example, the input method of "go" is fcu, the code of f in the system is 00110, the code of c is 00011, the code of u is 10101, plus 00000 means start query. When the EEG signal 00110 00011 1010100000 is continuously input, the word "Go" can be typed on the screen.

[0076] The corresponding content can also be played by the v...

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Abstract

Structure of the system is composed of purpose made hardware platform and control program. The hardware platform consists of PC, controller of brain-computer interface, robot and peripheral electrical appliances. Serial port of computer is connected to the controller of brain-computer interface. Brain electric signal through CPU and computer program controls virtual keyboard and robot. Advantages are: stable hardware, high recognition rate of software, realizing function of virtual keyboard to output English and Chinese. The invention is suitable to handicapped by using brain electric signal to make robot serve people.

Description

Technical field [0001] The invention belongs to the technical field of biomedical engineering, and relates to a virtual keyboard and a robot control system, which combines the electrophysiology (electroencephalogram signal) of the biological nervous system with a computer and a robot in the whole system, and specifically relates to the electrophysiology of the brain, database , robotics, digital signal analysis and processing and control methods and other technical fields. Background technique [0002] At present, some foreign scholars are researching the brain-computer interface (Brain-Computer Interface) technology based on EEG in the laboratory. The main purpose is to serve as a barrier subsidy for the disabled. There are IEEE Trans Rehab Eng 2000; 8: 190-192), P300 brain potential (references are in IEEE Trans Rehab Eng 2000; 8: 174-179), mu or beta wave brain potentials (references are in Trans Rehab Eng 2000; 8: 203-204) to control the computer and surrounding electro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00A61B5/04
Inventor 王宏王志宇庞小飞叶柠
Owner NORTHEASTERN UNIV LIAONING