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Switching control method based on brain electric activity human face recognition specific wave

A technology of face recognition and switch control, applied in electrical program control, character and pattern recognition, input/output of user/computer interaction, etc., can solve problems such as long-distance, and achieve high usability and high recognition effect

Inactive Publication Date: 2009-01-07
BEIJING NORMAL UNIVERSITY
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AI Technical Summary

Problems solved by technology

The above-mentioned system has more or less problems in the correct rate of judgment and real-time effect. Although the correct rate of judgment using the above-mentioned method is better than that of random guessing, it is far from practical application.

Method used

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  • Switching control method based on brain electric activity human face recognition specific wave
  • Switching control method based on brain electric activity human face recognition specific wave
  • Switching control method based on brain electric activity human face recognition specific wave

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Experimental program
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Embodiment Construction

[0027] The realization of the present invention is mainly by Figure 4 The four modules shown consist of:

[0028] (1) Picture stimulus module

[0029] The role of the picture stimulator is to cooperate with the user to induce the required EEG signal components according to the needs. Specifically, if the user wants to turn on the device, the user chooses to look at the face, which will induce the obvious N170 specific component in the EEG. Otherwise, the user chooses to look at the object picture, and the N170 component in the EEG does not appear or is not obvious.

[0030] The working process of the picture stimulator in the system is as follows: Figure 5 shown in 500 millisecond intervals. The screen is black for 500 milliseconds, and then the face and object pictures are presented, and the pictures are presented for 500 milliseconds. Then another 500 milliseconds of black screen, followed by 500 milliseconds of images of faces and objects. so repeatedly.

[0031] Al...

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Abstract

The present invention discloses a switch control method based on human face identification specificity waves in brain waves. The method comprises the following steps: a picture exciting module presents human face and object pictures synchronously at a certain interval, and if a user wants to open a device, the user should observe the human face picture, or else observe the object picture; a brain wave signal acquiring module records brain wave signals of the user scalp and performs amplification and digital-to-analog conversion; a signal detection module detects that whether specificity waves generated by the exiting of the human face picture exist in the brain wave signals or not; a switch control module transforms the detection result into binary control signals to control the switch, and if obvious specificity wave component exist in the brain waves, the device is opened, or else the device is closed. In the present invention, a direct control channel between a human brain and an external switch device is established through acquiring and analyzing human face identification specificity wave components in the brain waves without depending on normal information transmitting channels such as peripheral nerves, muscles and the like for providing a novel method of controlling external environment for persons having normal thinking abilities but suffering from dyskinesia.

Description

technical field [0001] The present invention relates to a switch control method based on the specific wave of face recognition in brain electricity, specifically refers to a method that utilizes the face recognition specific component pair in scalp brain electricity recorded when a person performs a face recognition task. The switch of the external device is controlled. It belongs to the combined application of the cognitive neuroscience field and the information technology field. Background technique [0002] With the rapid development of brain science and information science, especially the intersection and combination of these two scientific fields in the past decade, a new science and technology - brain-computer interface technology has been born. The brain-computer interface does not rely on the normal output channel of the brain, that is, the information transmission channel of peripheral nerves and muscles, but establishes direct communication and communication betwe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/02G06F3/01A61B5/0476G06K9/00
Inventor 张家才尹恺姚力徐雅琴张行武进
Owner BEIJING NORMAL UNIVERSITY
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