Solar Powered Wheelchair Controlled by Voice Recognition System for Physically Disabled People

Introduction

The main objective of this project is to utilize solar power and implement voice control system in the design and development of wheelchair so that the physically disabled people in India can increase their self mobility on flat horizontal surfaces, both indoor and outdoor. Presently, manual wheelchairs are used by many of the disabled, but some current users of the manual wheelchairs do not have the physical strength or strong upper limbs. As such they need a companion to move the vehicle and are also not able to travel long distances. Thus in the present project work, a solar powered electric motor system and a motion control system consisting of voice recognition unit are added to the current manual wheelchair to provide wheelchair users with improved levels of self mobility. It will be eco-friendly and pollution free.

Schematic of Solar powered wheel chair	Pictures of final Assembly of SPWCV

Achievements

The main components of the proposed Solar Powered Wheelchair controlled by Voice Recognition System (Fig.1) include solar panel which absorbs the solar energy from the sun, battery which is a storage place for the energy received by the panel, charge controller which makes sure that the batteries are always fully charged and ready to go all the time, electric motors which receives the electrical energy from batteries and provides the motion, voice recognition system which automatically generates a closed captioning of conversations and commands the wheelchair to move according to user’s will. The wheelchair proposed in this project can run at a maximum speed of about 6.33 Kmph and helps to enhance the mobility of the disabled.

The design aspect of the project mainly includes the calculation of the centre of gravity of the vehicle, maximum speed of the vehicle, check for static and dynamic balance of the wheelchair, and details of circuits and controls. Also the voice recognition system used in the project (HM2007) is trained with the voice commands FORWARD, BACKWARD, RIGHT, LEFT, and STOP. The program of microcontroller (Arduino) used in drive circuit of voice kit is developed using Arduino Software. The test run of the fabricated model (Fig.2) of the wheelchair concludes that the developed model is reliable, sustainable and functional.

• For further information please contact

S.R.K.R. Engineering College
Chinna Amiram, Bhimavaram

Andhra Pradesh 534 204

Email : vdp009@gmail.com