International Journal of Engineering Trends and Technology (IJETT) - Volume4Issue5- May 2013
The Domesticated Robot for Paralysis Patients
Using Mems Accelerometer
P.Vikram#1, Muppalla Sagar*2
#
Asst professor, ECM Department, KL University
Andhra Pradesh, India
*
Student, ECM Department, KL University
Andhra Pradesh, India
Abstract--This proposed project is for people who are
unable to move from a confined place, for example
people who are partially paralyzed or cannot walk. The
main aim of this project is to design and construct a
assisting device to paralysis patients and older adults.
Now a day’s many older adults and paralysis patients
facing a lot of problems in their living places. The main
problem is they can’t ask their needs like food and
water. So to avoid those problems we are implementing
a robot. The robot can move according to the
commands given by the patient, and announce the needs
like food, water, medicine etc. Here we are using MEMS
sensor to give the commands and control the robot and
video camera to observe the surroundings. The output
of the camera is visible in television screen. By watching
this camera output on screen the patient can control the
robot.
Keywords--MEMS, speaking robot, video camera
1.
Introduction
The main aim of this project is to design and
construct a gestures controlled device switching
system[2] and also a robot control wirelessly with a
video camera on it for physically challenged. The
user can wear this device to any movable part and
with the simple gestures he can request the basic
needs like water, food or medicine through robot
operated wirelessly using MEMS (Micro ElectroMechanical Systems) technology. User can also
control the electrical devices like light; fan etc with
the help of gestures.
is to the forward then the device will be “ON” for the
first time then next time it will be “OFF”. In the same
way, if the tilt is to the left side then another device is
going to be controlled. The tilt is in left side or right
side direction the related need will be announced.
This device is very helpful for paralysis and
physically challenged persons. This device is portable
and this system operation is entirely driven by
wireless technology. User can wear it to any movable
part and can operate it by tilting the MEMS sensor.
This project makes use of a Relay and Triac for
switching the devices and DC motors for Robot
movement, wireless camera to view the surroundings,
TV for viewing live images and Micro controller,
which is programmed, with the help of embedded C
instructions. This microcontroller is capable of
communicating with transmitter and receiver
modules. The MEMS based sensor detects the tilt and
provides the information to the microcontroller (on
board computer) and the controller judges whether
the instruction is right movement or left movement
instruction and controls the operation respectively.
2.
DESIGN OF ROBOT USING MEMS:
MEMS is a Micro Electro Mechanical
Sensor [3] which is a highly sensitive sensor and
capable of detecting the tilt. This sensor finds the tilt
and operates the electrical devices and announces the
basic needs depending on tilt. For example if the tilt
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International Journal of Engineering Trends and Technology (IJETT) - Volume4Issue5- May 2013
transmit through RF Transmitter. A voice circuit is
connected to controller to announce the commands.
The user can listen given commands by using this
voice circuit. Reset circuit is to remove commands
which are already in temporary memory. LED
indicator is to indicate the system is locked or
unlocked. If the light is in on position system is
unlocked, otherwise in locked position. Relay driver
is to switch on the some devices like fan, light. The
microcontroller takes power from the regulated
power supply.
Fig1: Block diagram of the domesticated robot using
MEMS
The above fig shoes the block diagram of the
domestic gesture controlled robot. Main part is
sensor. User controls the robot by using this MEMS
sensor MEMS is a Micro Electro Mechanical Sensor
[3] which is a highly sensitive sensor and capable of
detecting the tilt. For every tilt there is a
corresponding command. For example if we tilt 3
times it unlock the system, if we tilt another time it
announce water. For every tilt there is a
corresponding announcement. we can also move the
robot left, right, front, back by using this sensor. The
output of the MEMS given to transmitter. The
transmitter transmits it to receiver through RF
communication. The receiver is nothing but the
speaking robot. The robot also contains a video
camera and the output of camera is connected to
television.
A. TRANSMITTER:
The transmitter is present beside the user. The
MEMS Accelerometer gives output to Analog to
Digital Converter (ADC). The ADC converts given
analog input to digital output. This digital output is
given to microcontroller. The microcontroller PIC
16F877A [4] controls the operation of the system.
Encoder is used to encode the given digital signal to
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Fig2: block diagram of transmitter
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International Journal of Engineering Trends and Technology (IJETT) - Volume4Issue5- May 2013
The receiver receives the radio signals from the
transmitter and decodes it by using a decoder. The
decoded output is given to the microcontroller.
Controller gives this received voice commands to the
voice circuit. The voice circuit announces commands
through voice circuit APR 9600. The microcontroller
takes power supply from regulated power supply. A
DC motor is used to drive the robot. A video camera
is placed at the top of the robot. The output of the
video camera is given to AV Transmitter. The camera
takes power from a external battery.
Fig3: Circuit diagram of transmitter
B. RECEIVER:
Fig5: circuit diagram of receiver
C. AV receiver:
Fig 4: block diagram of receiver
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Fig6: AV Receiver
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International Journal of Engineering Trends and Technology (IJETT) - Volume4Issue5- May 2013
The AV Receiver receives audio and video
information from the AV Transmitter, and the output
is given to the Television. These two takes power
from external power supply.
3.SIMULATION RESULTS AND
ANALYSIS
Simulation of the proposed scheme has been
carried-out in Proteus. The circuits for the various
systems have been simulated and all the necessary
conditions verified. B l o c k d i a g r a m s a r e
s h o w n i n f i g 1 , 3 a n d 5 . Circuits for
various systems have been shown in figures 2 and
4. CONCLUSION
In this project, an i m p l e m e n t a t i o n o f a
r o b o t f o r p a r a l ys i s p a t i e n t s u s i n g
M E M S a c c e l e r o m e t e r have been designed,
simulated and tested. The simulation has been done
using proteus and testing has been carried out
using the developed prototype. We think this
project is very helpful to paralysis patients. The
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main drawback is crossing the obstacles. To avoid
this problem we can use ultrasonic sensors in front
of the robot or we can also use flying robot.
5. REFERENCES:
1. “Applications of MEMS in Robotics and
BioMEMS”, 2011 UKSim 13th International
Conference on Modelling and Simulation.
2. “An Autonomous Robot Based on a
Wheelchair”,2012 IEEE
3. MEMSAccelerometer
“
www.wikipedia.com/mems “
4. Microchip Technology Inc. (2007), “Data
sheets”. Available at www.microchip.com.
5. The Domesticated Robot: design guidelines for
assisting older adults to age in place.
6. Two-handed gesture recognition and fusion
with speech to command a robot, B. Burger · I.
Ferrané · F. Lerasle · G. Infantes.
7. Robot Partner System for Elderly People Care
by Using Sensor Network Jinseok Woo,
Student Member, IEEE.
8. Selective Device Activation for Power
Reduction in Accelerometer-Based Wearable
Guidance Systems for The Blind.
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