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Intelligent wheelchair

A wheelchair and intelligent technology, applied in patient chairs or special means of transportation, vehicle ambulance, medical transportation, etc., can solve problems such as prone to failure, complex structure of electric wheelchairs, inability to achieve high precision, high stability, etc.

Inactive Publication Date: 2014-11-26
RES INST OF XIAN JIAOTONG UNIV & SUZHOU
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] However, the existing electric wheelchair controller is limited by the existing main control chip, which is an open-loop control, which cannot achieve high-precision and high-stability control, and relies on the differential to control the respective rotational speeds of the driving rear wheels when turning , making the structure of the electric wheelchair complex and prone to failure

Method used

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Embodiment Construction

[0020] Smart wheelchairs include an electric wheelchair system, which includes a wheelchair body, two driven rear wheels, two follow-up front wheels, a battery, a control panel, a joystick, turn signals, lights, and a horn. The joystick can be turned in four directions to realize the functions of acceleration, deceleration, left turn and right turn. The wheelchair body includes armrests and two footrests to improve the comfort of the occupant. Such as figure 1 As shown, the electric wheelchair system 110 is connected with a digital signal processing (Digital Signal Processing, DSP) controller, and the motion of the wheelchair body is controlled by the DSP controller. The DSP controller uses the general I / O port to connect with the control signals of the various motions of the intelligent wheelchair. The control signals include: electric wheelchair control system signals include the main power switch of the controller, start, brake, power management, power display and warning,...

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Abstract

The invention discloses an intelligent wheelchair which comprises a wheelchair body. The wheelchair body is provided with two rear driving wheels and two front follow-up wheels. The two rear driving wheels are respectively provided with a brushless DC motor. The brushless DC motors are connected with a double closed loop control system. The double closed loop control system is controlled by a DSP controller, and the DSP controller controls the rotating speeds of the motors so as to realize different rotating speeds of the two rear driving wheels and achieve differential steering. According to the intelligent wheelchair, the double closed loop control system controls the rotating speeds of the driving wheels to achieve high-precision and high-stability control over the speeds; moreover, in the turning process, the DSP controller controls the different rotating speeds of the rear driving wheels, so that turning is realized, and the structure of the wheelchair is simplified.

Description

technical field [0001] The invention relates to the field of electric wheelchairs, in particular to an intelligent electric wheelchair. Background technique [0002] Walking wheelchairs have brought convenience to people with reduced mobility. With the progress and development of social civilization, manual wheelchairs have a tendency to replace manual wheelchairs due to some of their own shortcomings. An electric wheelchair generally includes a car body, front and rear wheels, a driving motor, a joystick, and a motor driver. The driving motor is powered by a battery to drive the rear wheels. The person sitting in the wheelchair only needs to press the operating lever to move the wheelchair forward and backward. and turn left and right. [0003] However, the existing electric wheelchair controller is limited by the existing main control chip, which is an open-loop control, which cannot achieve high-precision and high-stability control, and relies on the differential to cont...

Claims

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Application Information

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IPC IPC(8): A61G5/04
Inventor 王锋陈志向李民强王园刚尹仁超
Owner RES INST OF XIAN JIAOTONG UNIV & SUZHOU
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