Design and Implementation of Wheel Chair cum Stretcher Using Servo Control Mechanism

International Journal of Research and Scientific Innovation (IJRSI) | Volume VI, Issue III, March 2019 | ISSN 2321–2705

Design and Implementation of Wheel Chair cum Stretcher Using Servo Control Mechanism

Tarun Kanti Pal *, Madhavi Anand, Anjali Sharma, Sk. Ebadattulla, Sourav Kumar Bhunia

Department of Mechanical Engineering, College of Engineering and Management, Kolaghat, KTPP Township – 721 171, West Bengal, India

Abstract— This work represents the design and implementation of wheel chair cum stretcher for carrying the physically disabled persons in easier way and manufacturing cost is also quiet low. The servo control mechanism can convert a wheel chair into stretcher or vice versa. When servo control mechanism is stretched the down position of the seat including with footrest goes horizontal till the level of seat of wheel chair and simultaneously the back support goes down and make horizontal with seat of wheel chair, now it become stretcher and when same system operated vertically and it converts into wheel chair from stretcher. It is design and implement in such a way that a patient or physically disabled persons could be used in a single clicked and self-drive by joystick.

Keywords— Servo Mechanism, Powered Wheel Chair, DC Motor

I. INTRODUCTION

Robotic technologies have the potential to improve the lifestyles of people suffering from one or more disabilities. Related developments are often grouped under the terms Rehabilitation Technologies or Assistive Technologies. They attempt to restore human abilities that have been reduced or lost by disease, accident, or old age. Mobility is one such function. There are many reasons why a person may not be able to travel freely, including motor control problems, spinal injuries, and amputation. A wheelchair is a mechanical device that can often assist. It effectively uses wheels and mechanical
support to overcome a loss of legs or leg control. Manual wheelchairs can be operated by persons who have the use of their upper body or someone available to assist. Powered wheel chairs have been developed for when either of these cases does not apply. However, these devices typically require a high level of user control and this is something precluded by many severe forms of disablement. In recent decades many groups have researched the possibilities of robotic wheelchairs. These endeavors are aimed at creating intelligent devices that can sense information from their environment and respond in useful ways.

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