Novel movement imagery electroencephalogram control-based intelligent wheelchair system

A motor imagery, electric wheelchair technology, applied in cognitive neuroscience, automatic control field, can solve problems such as low transmission rate, safety problems, inability to meet real-time requirements, etc.

Inactive Publication Date: 2010-12-01
BEIJING NORMAL UNIVERSITY
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  • Description
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Problems solved by technology

The existing intelligent wheelchair control system based on the brain-computer interface and its EEG signal processing method have the following problems: (1) the user needs to keep an eye on the four circular direction lights on the control panel, which easily causes the user to fail to see them in time. Obstacles in the direction of travel can easily cause safety problems when

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  • Novel movement imagery electroencephalogram control-based intelligent wheelchair system
  • Novel movement imagery electroencephalogram control-based intelligent wheelchair system
  • Novel movement imagery electroencephalogram control-based intelligent wheelchair system

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Embodiment Construction

[0027] The intelligent wheelchair system based on motor imagery EEG control described in this invention is especially suitable for people with disabilities. Developers can develop different specific applications based on the basic equipment and methods of this invention, not only for controlling electric wheelchairs, but also for Used in other human-computer interaction applications, such as game control platforms. The following is a detailed description of the system combined with wheelchair control.

[0028] The basic principle of the present invention is that when the user wants to control the wheelchair to move left or right, without any physical or verbal actions, as long as he imagines the movement of the left hand or the right hand, the EEG recorded by the electrodes in the corresponding motor sensory area on the scalp Specific ERD / ERS phenomena will be generated on the μ rhythm and β rhythm in the signal. After the computer receives the EEG signal, it can reversely ide...

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Abstract

The invention provides a novel movement imagery electroencephalogram control-based intelligent wheelchair system, and aims to provide a service auxiliary motion tool for paralyzed patients or elderly people and help them to take free activities outdoors. The system consists of a portable electroencephalogram acquisition system, a signal processing device, an interface circuit and an electric wheelchair, which are connected in turn. The portable electroencephalogram acquisition system is a set of simple and practicable electroencephalogram acquisition system and is used for recording electroencephalogram signals under user imaginary left and right hand motion tasks; the signal processing device is a signal processing module which operates on a laptop, extracts imagery motion-related electroencephalogram characteristics and identifies the subjective intention of the user; the interface circuit converts the identified subjective intention of the user into four paths of voltage signals; and the electric wheelchair receives the four paths of control voltage signals and controls the operating conditions of left and right rear wheel motors. The intelligent wheelchair system implementing mode can be applied to other application fields of direction control.

Description

technical field [0001] The invention relates to a new type of intelligent wheelchair system based on motor imagination EEG control, specifically refers to the collection of scalp EEG signals in the process of imagining left and right hand movements, and by analyzing the specific components of EEG, the direction of the user's imagination is judged, and the movement of the wheelchair is realized. System device for direction control. This system does not require any physical or verbal movements, but only needs the user to imagine the movement to complete the control of the direction of the wheelchair movement. The invention belongs to the combined application of the field of cognitive neuroscience and the field of information technology, and belongs to the field of automatic control technology. Background technique [0002] For those paralyzed patients, it is their dream to go outside and move freely. As a service auxiliary exercise tool in the field of medical care, smart wh...

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Application Information

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IPC IPC(8): A61G5/04
Inventor 胡治平张家才姚力陈诚徐赫李达
Owner BEIJING NORMAL UNIVERSITY
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