International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 02 | Feb -2017
p-ISSN: 2395-0072
www.irjet.net
GESTURE CONTROL WHEEL CHAIR CUM STRETCHER. Vaibhav S. Titurmare1, Aniket p. Wankhede2, Prof. Atul T. Bathe3 1UG
Deparement Of Mechanical Engg.,Descoet Deparement Of Mechanical Engg.,Descoet 3Professor, Dept. of Mechanical Engg., DES’s College of Engineering and technology, Maharastra, India 2UG
---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract
In this paper use of gesture control method inter face with micro controller for the movement of wheelchair and stretcher by using actuator and motor assembly. identifies the innovation of wheel chair cum stretcher in technology, application and usability. Our findings conclude that GCUI now affords realistic opportunities for specific application areas, and especially for users who are uncomfortable with more commonly used input devices. We deals with different types of gestures, and its users, applications, technology, issue results and interfaces from existing research. This paper also provides a research background for gesture controlled research for disabled people.
Key Words: Gesture-control, user interfaces, DOF, RF module.
1.INTRODUCTION Keyboard and mouse now provide the input. Use of other options i.e hand, head or body gesture .We will see more elderly people and fewer younger people as a process of huge demographic change. The older population will continue to grow significantly in the future. It’s widely accepted that we need to address this issue through more research work. This paper investigates the research works of gesture controlled technology for user interactions with automation. Gesture type, use of different body parts, gesture commands, gesture application, interface, technology, user type, issues addressed and final result have been listed and described to give the background of gesture based technology development. The goal of this paper is to develop methodologies that help users to control the wheel chair and stretcher, with a high-level of abstraction from the AVR specific language.
2. TECHNICAL REQUIREMENTS The technical on component requirements chosen as a basis for the efficient functioning of the system are as follows: 2.1 Microcontroller ATmega 8 microcontroller is used as the hardware platform. It is the controlling unit, to which all other components (Accelerometers, Motors, actuator, brake etc.) are interfaced. Two such microcontrollers are used in this © 2017, IRJET
|
Impact Factor value: 5.181
|
project, one at the Receiving end and other at the Transmitting end. 2.2 RF Module RF stands for Radio Frequency. This module consists of further two parts: Transmitter and Receiver. It is readily available in different operating frequencies with different operating range. An Encoder Circuit and a Decoder Circuit is used along with the Transmitter and Receiver respectively in order to transmit and receive the signal. The native communication task between transmitter, receiver, the platform and the different hand and leg gestures of the user is done by this module via RF signals. One such RF Module is required in this model. The RF Module used in this project works on the frequency of 315MHz with an operating range up to 500 meters. 2.3 Accelerometer An accelerometer measures gravitational force . By the movement of an accelerometer along its measured axis, one can read the gravitational force related to the amount of tilt. Most accelerometers available today are small surface mount components with high sensitivity and accuracy, so you can easily interface them to a microcontroller. There are three axes that can be measured by an accelerometer and they are labeled as X, Y and Z. Each measured axis represents a separate Degree of Freedom (DOF) from the sensor-thus a triple axis accelerometer might be labeled as 3 DOF. In this paper, only 2 axes namely X and Y are used. 2.4 Actuator The actuator is the unit, which converts the operating into a linear movement. The principle of the actuator’s mode of operation is that a low voltage DC motor, via a gear system, rotates a threaded spindle, onto which a nut is fitted. As this nut cannot rotate, since the piston rod is restrained, the piston rod will move forwards or backwards, when the rack and pinion rotates. On the basis of motor type, gearing of rack and pinion arrangement the actuator’s thrust and speed are determined. We can used the actuator to adjustment of beds, furniture, table heights and angles, Patient hoists within the care and hospital sector, of dentist chairs/gynecological chairs, industrial processing machines, agricultural machines, ventilation systems. The linear actuators are basically used to convert wheel chair to stretcher v/s. ISO 9001:2008 Certified Journal
|
Page 1369