Wheelchair suitable for light and handicapped people

A technology for wheelchairs and crowds, which is applied in vehicle ambulance, patient chairs or special transportation tools, medical transportation, etc. It can solve the problems of complex speed and steering control, complex regulation algorithms, and imperfections, etc., so as to achieve universal application, The effect of less control variables and simple structure

Pending Publication Date: 2022-03-15
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The above-mentioned prior art wheelchair travel direction, speed and steering control are relatively complicated and not perfect, and the real-time performance, accuracy and convenience of the control need to be improved, especially independent direction control components and speed control components are required, and the control algorithm is relatively complicated
At the same time, the obstacle-surmounting performance of the wheel body of the prior art and the overall seismic performance of the wheelchair are also relatively lacking, and a wheelchair that can meet the lightly handicapped population in an economical and effective manner is needed, and its structure and control method are simple and convenient. Ease of handling with improved obstacle clearance and shock absorption

Method used

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  • Wheelchair suitable for light and handicapped people
  • Wheelchair suitable for light and handicapped people

Examples

Experimental program
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Effect test

Embodiment 1

[0030] This embodiment discloses a wheelchair suitable for lightly handicapped people, which may also be a transfer device or a moving device. The wheelchair of this embodiment includes a supporting part for supporting the whole wheelchair, a seat part capable of directly contacting with the user's body and supporting its body parts, a moving part for realizing the forward and stopping of the wheelchair, and realizing the control of starting, stopping and turning of the wheelchair department.

[0031] Preferably, the moving part includes a first front wheel 101 and a second front wheel 102 coaxial with each other, a first rear wheel 103 and a second rear wheel 104 coaxial with each other, and a braking device arranged along the body direction of the wheelchair. . Preferably, the seat portion includes a seat cushion, a backrest, an armrest and a pedal. Preferably, the supporting part includes a front frame body connecting and accommodating the first front wheel 101 and the se...

Embodiment 2

[0052] The second aspect of the present invention provides a wheelchair, comprising at least a first front wheel 101 and a second front wheel 102 coaxial with each other, and a first rear wheel 103 and a second rear wheel 103 coaxial with each other, which are arranged along the vehicle body direction of the wheelchair. Rear wheel 104. The wheelchair can change the direction of travel of the wheelchair through the speed difference between the first rear wheel 103 and the second rear wheel 104 .

[0053] Preferably, the wheelchair can adjust the lateral movement speed of the wheelchair through the magnitude of the speed difference between the first rear wheel 103 and the second rear wheel 104 . Preferably, the first front wheel 101 and the second front wheel 102 are Mecanum wheels. The first rear wheel 103 and the second rear wheel 104 are straight wheels. Wherein, the first front wheel 101 and the second front wheel 102 are driven wheels. The first rear wheel 103 and the se...

Embodiment 3

[0059] The third aspect of the present invention discloses an anti-offset wheelchair, which can be corrected in time when an offset occurs due to uneven ground during the driving process of the wheelchair, so as to reduce the risk of rollover during the driving process or braking process of the wheelchair. And ensure the controllability of the wheelchair travel route. Due to the high flatness requirements of the mecanum wheel to the ground, it is particularly important to correct the route during the movement.

[0060] Preferably, inertial measurement devices are respectively provided in the left and right directions perpendicular to the forward direction of the wheelchair, and the inertial measurement devices are configured to detect the acceleration of the wheelchair in the left and right directions.

[0061] The actuation unit of the control part of the wheelchair controls the wheelchair to correct the deviation with the following control method:

[0062] Generate an ideal...

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Abstract

The invention provides a wheelchair suitable for light barrier people. The wheelchair at least comprises a first front wheel, a second front wheel, a first rear wheel and a second rear wheel, wherein the first front wheel and the second front wheel are arranged in the vehicle body direction of the wheelchair and are coaxial with each other, and the first rear wheel and the second rear wheel are coaxial with each other. The first front wheel and the second front wheel are Mecanum wheels. The first rear wheel and the second rear wheel are straight wheels. According to the differential steering control system, independent double motors are adopted to drive the straight movement wheels to serve as the rear wheels and the driving wheels respectively, and the Mecanum wheels serve as the front wheels and the driven wheels to be matched with the driving wheels of the straight movement wheels. The speed and the speed difference of the first motor and the second motor for driving the first rear wheel and the second rear wheel are regulated and controlled respectively, the advancing direction and the lateral moving speed of the wheelchair can be regulated, control variables are few, the control precision can meet the general requirements of the wheelchair for light-barrier people, the structure is simple, and the wheelchair is suitable for the light-barrier people.

Description

technical field [0001] The invention relates to the field of wheelchairs, in particular to a wheelchair suitable for lightly handicapped people, more specifically an electric wheelchair and a control method thereof. Background technique [0002] China is gradually entering an aging society. According to the seventh census data, China's population aged 60 and over is 264.02 million, accounting for 18.70%; among them, the population aged 65 and over is 190.64 million, accounting for 13.50%. Improving the quality of life of the elderly and caring for the elderly have become important issues in society. As the elderly grow older, a considerable number of elderly people have inconvenient legs and feet, which affects normal going out activities. Therefore, providing a low-cost, easy-to-operate and stable walking tool for the elderly is an important part of implementing the policy of caring for the elderly. In addition, there are currently 24.72 million people with physical disa...

Claims

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Application Information

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IPC IPC(8): A61G5/04A61G5/10
CPCA61G5/045A61G5/1051A61G5/1005A61G5/1035A61G2203/14A61G2203/70
Inventor 张萍张文涛张悦蛟阳巧
Owner HEFEI UNIV OF TECH
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