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an intelligent wheelchair

A wheelchair and intelligent technology, applied in patient chairs or special transportation tools, medical science, diagnosis, etc., can solve problems such as user fatigue or even dizziness, affect the appearance and wearing comfort, and make it difficult to realize free observation, etc., to achieve suitable Repeated use, long effective period of conductivity, and improved wearing comfort

Active Publication Date: 2020-11-24
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the left and right rotation signals of the eyeballs are collected mainly through the camera or viscous electrodes located near the user's temples to control the left and right steering of the wheelchair; The guidance signal means that it is difficult for the user to freely observe other directions while adjusting the direction of the wheelchair. This solution is not in line with human habits, and it is extremely easy to make the user feel tired or even dizzy, and there are certain safety hazards
Another problem is that the camera-based signal acquisition scheme is expensive and may involve privacy issues; and the viscous electrodes pasted near the user's temples greatly affect the appearance and wearing comfort, and are easy to fall off from the face during use, and Not suitable for repeated use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] see figure 1 , an intelligent wheelchair, comprising a goggle controller 1 and a controlled wheelchair 2;

[0037]The goggles controller 1 includes a goggles body, an acquisition electrode 16, an oculoelectric analog-to-digital conversion chip, a mirror-mounted attitude sensor, a mirror-mounted main control unit, and a mirror-mounted wireless communication module; the goggles body includes a mirror frame 12 and a fixed Device 14; the upper edge of the picture frame 12 is the upper contact surface, and the lower edge of the picture frame 12 is the lower contact surface; the collection electrode 16 includes an upper orbital electrode 161, a lower orbital electrode 162 and a reference electrode, and the upper orbital electrode 161 Located on the upper contact surface, the lower orbital electrode 162 is located on the lower contact surface, and the reference electrode 16 is located on the contact surface of the frame other than the positions where the upper orbital electrod...

Embodiment 2

[0087] Embodiment 2 is a kind of improvement on the basis of embodiment 1, specifically:

[0088] The controlled wheelchair can also be equipped with a chair-mounted attitude sensor; the chair-mounted main control unit controls the drive motor to perform steering operation according to the yaw angle difference between the mirror-mounted attitude sensor and the chair-mounted attitude sensor.

[0089] Compared with using the mirror-mounted attitude sensor alone to control the steering of the controlled wheelchair, by adding a chair-mounted attitude sensor as a reference for the mirror-mounted attitude sensor, according to the yaw angle difference between the mirror-mounted attitude sensor and the chair-mounted attitude sensor Controlling the steering of the controlled wheelchair allows the user to perform more precise steering operations with reference to the controlled wheelchair.

[0090] The chair-mounted attitude sensor in this embodiment can also use the BNO055 nine-axis se...

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Abstract

The invention relates to an intelligent wheelchair, which uses eye electricity data to switch to a wheelchair working mode, and adopts a strategy of controlling wheelchair movement in a head posture;when the controlled wheelchair in a drive control mode, a user can freely turn the head to observe things around; when the user intends to turn, the controlled wheelchair can be brought into a steering control mode by an eye movement, and in the mode, the user's head can control the controlled wheelchair for steering. The wheelchair optimizes the control logic and improves the use experience, andcombines maneuverability, flexibility and comfort, so that the user can operate the wheelchair freely while being free to observe the surroundings of the wheelchair.

Description

technical field [0001] The invention relates to the field of intelligent control, in particular to an intelligent wheelchair. Background technique [0002] With the development of society and the improvement of human civilization, people's demand for using modern high-tech to enhance the freedom of life and improve the quality of life is increasing. Among them, some intensive care patients have high paraplegia or nerve damage due to trauma, disease and other reasons. The whole body may only have the part above the neck that can move. Due to the lack of appropriate control methods, common ordinary wheelchairs, hand wheelchairs or electric wheelchairs cannot be used. wheelchair. Therefore, research on intelligent control of wheelchairs has become one of the hot spots. [0003] In the prior art, the left and right rotation signals of the eyeballs are collected mainly through the camera or viscous electrodes located near the user's temples to control the left and right steerin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61G5/04A61G5/10A61B5/0496A61B5/11A61B5/00
CPCA61B5/1118A61B5/6803A61G5/04A61G5/10A61G2203/10A61G2203/18A61G2203/30A61G5/1051A61B5/398
Inventor 钟清华陈振东杨飞帆刘惠鹏
Owner SOUTH CHINA NORMAL UNIVERSITY
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