Intelligent wheelchair human-computer interaction control system and method based on eye movement recognition

A motion recognition and control system technology, applied in the input/output of user/computer interaction, vehicle ambulance, patient's chair or special means of transportation, etc., can solve the problem that the control effect is not ideal, it cannot be accurate enough, and it is difficult to correct Describe the dynamics of the control system and other issues to achieve the effects of diversification of control methods, avoiding inflexible operations, and easy learning

CN107260420BActive Publication Date: 2018-11-23NANJING UNIV OF POSTS & TELECOMM
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2018-11-23

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Abstract

The invention discloses an intelligent wheelchair man-machine interaction control system and an intelligent wheelchair man-machine interaction control method based on eye movement recognition. According to the system and the method, an electromyographic signal acquisition module is used for collecting electromyographic signals of the eyes, characteristic selection is carried out on the electromyographic signals, eye movement recognition is carried out according to the electromyographic characteristic change difference during blink, thus the accurate judgment on the conscious blinking is realized, further, the accurate control over the direction of a wheelchair is realized by combining a plurality of conscious blinking modes, a fuzzy controller part takes a signal electromyographic integral value and signal slope as input and the running speed of the intelligent wheelchair as output, then a two-dimensional structure fuzzy controller with two inputs and single output is built, and thus the accurate control over the running speed of the wheelchair is realized. According to the system and the method, the scheme is diversified, the operation mode is simple, convenient and rapid, the learning is easy, the special requirements of old people and disabled people in the control mode are fully considered, the control problem of the intelligent wheelchair system caused by the fact that a traditional control mode is not flexible in operation and a user responds slowly is avoided, and the practical requirements of the old people and the disabled people are well adapted.
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Description

technical field

[0001] The invention belongs to the technical field of human-computer interaction control of intelligent wheelchairs, and in particular relates to a system and method for human-computer interaction control of intelligent wheelchairs for the elderly and disabled based on eye movement recognition. Background technique

[0002] With the rapid development of modern intelligent system technology, ensuring and improving the quality of life of the elderly and the disabled, and assisting the rehabilitation of the disabled have attracted more and more attention from people from all walks of life. The research on intelligent wheelchairs has a history of more than 30 years, and the manufacturing level, mechanical technology and frame structure have reached a good level, but there is still a lot of room for control methods and control systems to meet the different needs of different groups of people. Can go to research and development. In the control of intelligent whee...

Examples

Embodiment Construction

[0041] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0042] Such as figure 1 As shown, the present invention provides an intelligent wheelchair human-computer interaction device and control method based on eye movement recognition. The device is composed of myoelectric collection, feature selection, eye movement recognition, fuzzy control and motion drive. The following will The specific implementation plan of each part will be described in detail.

[0043] Such as Figure 2 to Figure 4 As shown, the EMG acquisition part mainly includes power module, ad623 amplifier, high-pass filter, low-pass filter, main amplifier and patch electrodes (such as figure 2 shown), these components are integrated into a circuit board for use.

[0044] The myoelectric collection part is pasted on the upper, lower and outer sides of the eye (such as image 3 As shown) the patch electrode collects the eye myoe...