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Electro-oculogram control system and method based on correction/training

A technology of control system and control method, which is applied in interdisciplinary fields, can solve the problems of affecting precision and accuracy, being easily affected by various interferences, and low acquisition accuracy, so as to achieve easy distinction from noise, improve anti-interference ability, and measure high precision effect

Inactive Publication Date: 2013-03-13
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The system uses unipolar leads to collect oculoelectric signals, the signal amplitude is low, and it is easily affected by various interferences, and the collection accuracy is not high
In addition, the eye movement state of different people and the eigenvalues ​​of various eye postures will have subtle differences, which will affect the precision and accuracy of the user's interactive control using electro-oculogram to a certain extent.

Method used

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  • Electro-oculogram control system and method based on correction/training
  • Electro-oculogram control system and method based on correction/training
  • Electro-oculogram control system and method based on correction/training

Examples

Experimental program
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Effect test

Embodiment 1

[0056] See figure 1 , This correction / training-based electrooculogram control system includes an electrooculogram signal acquisition and amplification system (1), an electrooculogram signal processing system (2) and an intelligent control system (3), and is characterized in that the acquisition and amplification system ( The sensor of 1) is placed around the eyes, and its output is connected to the signal processing system (2); the signal processing system (2) and the intelligent control system (3) are connected by wireless transmission. The specific working process is as follows: the acquisition and amplification system obtains the electrooculogram signal through the electrooculogram sensor, and performs gain amplification and filtering; the signal processing system extracts the electrooculogram signal feature and performs matching analysis with the eye posture feature parameters saved in the correction training mode. Judge the type of eye posture, wirelessly send the command c...

Embodiment 2

[0058] See Figure 1~Figure 5 This embodiment is basically the same as the first embodiment, and the special features are as follows:

[0059] The electrooculogram signal acquisition and amplification system (1) is composed of a dual-lead electrode sensor (4) connected to a signal filtering and gain amplifying unit; the dual-lead electrode sensor (4) includes: electrode A, electrode B , Electrode C, Electrode D and Electrode E, among them: Electrode A is used as a ground electrode and placed in the center of the forehead; Electrode B and Electrode C are used to record the ocular signals on the vertical channel, and Electrode B is placed in the center of the right eyelid Above the straight line, electrode C is placed below the center of the right eyelid; electrode D and electrode E are used together to record the ocular electrical signal on the horizontal channel, placed on the horizontal line of the outer border of the eyeball, and electrode D is placed on the outer border of the ...

Embodiment 3

[0063] See Image 6 , This correction / training-based EOG control method uses the above system for EOG control. The operation steps are as follows: 1) System initialization; 2) Working mode selection; 3) Ocular signal acquisition and filtering; 4) Ocular signal processing ; 5) Generate control / drive signals.

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Abstract

The invention relates to an electro-oculogram control system and method based on correction / training. The system comprises an electro-oculogram signal acquiring and amplifying system, an electro-oculogram signal processing system and an intelligent control system. Sensors of the signal acquiring and amplifying system are arranged around eyes, and outputs of the sensors are connected to the signal processing system. The signal processing system is connected with the intelligent control system in a wireless transmission mode. The specific working process is that the acquiring and amplifying system acquires an electro-oculogram signal through the electro-oculogram sensors and performs gain amplification and filtering; the signal processing system acquires electro-oculogram signal characteristics, performs matching analysis to the electro-oculogram signal characteristics and eye gesture characteristic parameters stored in a correction / training mode, judges the eye gesture types and sends command codes to the intelligent control system in a wireless mode; and the intelligent control system outputs a control signal to achieve the control of a controlled device. The electro-oculogram control system and method based on correction / training is high in measuring accuracy, good in robustness, simple in operation and capable of helping disabled people to improve independent living ability, and can be further used in special dangerous working occasions or working occasions with severe conditions.

Description

Technical field [0001] The invention belongs to the interdisciplinary fields of biomedical engineering, informatics, control engineering, etc., and more specifically is an eye electrical control system and method based on correction / training. Background technique [0002] Traditional human-computer interaction equipment (keyboard, mouse, handwriting pad, touch screen, etc.) cannot meet the normal needs of many people with disabilities to interact with the outside world. Therefore, scientists study the collection, processing and control systems of various bioelectricity (EEG, EMG, EOG, etc.) to realize multi-modal barrier-free human-computer interaction, in order to help the disabled communicate smoothly with the outside world and improve their independence. The ability to live. In this context, the eye electrical control system appeared. [0003] In 1849, Du Bois-Reymond et al. discovered that there is a relationship between the movement of the human eye and the electrode potenti...

Claims

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Application Information

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IPC IPC(8): G05B19/04G06F3/01
Inventor 林敏李斌
Owner SHANGHAI UNIV
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