embedded systems & robotics projects
DESCRIPTION
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REMOTE CONTROLLEDEMBEDDED SYSTEM
VIA INTERNET9540854414
Tecnocrats InfotechSummer Training and Robotics Projects
tecnocrats Infotech 9540854414
By
Arpit Gupta (T3083011) Gaurav Kulkarni (T3083077) Venkatesh Iyer (T3083057)
Under the able guidance of
Mrs. Smita Daphale
tecnocrats Infotech 9540854414
INTRODUCTION
tecnocrats Infotech 9540854414
NEED FOR AUTOMATION.
REMOTE SENSING OF A ROBOT.
USE OF INTERNET.
WHY PICK AND PLACE?
tecnocrats Infotech 9540854414
tecnocrats Infotech 9540854414
LITERATURE SURVEY
tecnocrats Infotech 9540854414
NEED FOR REMOTE CONTROLLED ROBOT
tecnocrats Infotech 9540854414
Construction Works. Nuclear Power Plants. Steel Plants.
Future Scope
tecnocrats Infotech 9540854414
SPECIFICATIONS
tecnocrats Infotech 9540854414
Microcontroller : AVR ATmega32 Temperature Sensor : LM 35 , 10mV/C LCD : 16 x 2 Motor Driver : L298. Type of Motor : DC Battery : Voltage : 12 V Maximum o/p current : 3.36 A Charging Time : 1.2 Ah
tecnocrats Infotech 9540854414
Dimensions of Robot (approx) Length : 25 cm Width : 30 cm Height : 35 cm Length of arm : 30cm
Left ,Right motor : 10 rpm ,12V ,2 kg Other motor : 30 rpm ,12V ,1 kg Total Load Capacity of the robot : 4 kg
tecnocrats Infotech 9540854414
WHY THE AVR FAMILY?8051
AVR
8 bit micro based on CISC architecture.
8051 family is slower as compared to AVR.
Does not have a ADC. Instruction set is
large.
JTAG interface absent.
8 bit micro based on RISC architecture.
AVR's are fast, consume little power, are rugged.
It has an inbuilt 10-bit ADC.
Instruction set is simple and compact.
JTAG interface present.
tecnocrats Infotech 9540854414
FLOW CHART
tecnocrats Infotech 9540854414
START
INITIALISE THE UART & ADC
ACCEPT COMMAND FROM SERVER PC
CHOICE
FORWARD/
REVERSE
MOTION
GRIPPING OF
ROBOTIC ARM
CIRCULAR
MOTION
VERTICAL MOTION
STOP
A
B
tecnocrats Infotech 9540854414
A
READ TEMPERATURE FROM SENSOR
CONVERT TO DIGITAL VIA ADC
SEND DATA TO RXD
O/P DATA TO LCD
END COMMUNICATIO
N
STOP
B
Yes
No
tecnocrats Infotech 9540854414
Basic working
tecnocrats Infotech 9540854414
Yes No
tecnocrats Infotech 9540854414
tecnocrats Infotech 9540854414
Remote Terminal Used for an authorised client’s access to
robot.
Has a JAVA based client applet running on it. Moniters the temperature. Controls the motions of robot.
Server Machine Acts as an intermediate between robot and
user . Has a JAVA based server applet running on it. Connected via RS-232 to robot.
tecnocrats Infotech 9540854414
Microcontroller (AVR Atmega 32) Converts analog signal from sensor to digital. Sends digital data via UART to server PC. Receives control code from user through
server. Controls robot as per the received code. Detects errors ,if any and sends it to LCD.
Temperature Sensor(LM 35) Is a Precision Centigrade Temperature Sensor
with a sensitivity of 10mV/C. Senses temperature and converts into
equivalent analog voltage between -550 to 1500 mV.
tecnocrats Infotech 9540854414
SCHEMATIC
tecnocrats Infotech 9540854414
Motor Motor used is a DC motor with an output of
1.18W and operates in 6-12V range. Motor is controlled by an H-bridge in the
driver.
Driver(L298) Is an interface between low power(AVR) and
high power(motor) devices. Contains an inbuilt H-bridge controlled by
AVR.
LCD Used to display temperature and to detect
errors in the robot control.tecnocrats Infotech 9540854414
REFERENCES
tecnocrats Infotech 9540854414
“8051 micro-controller and embedded systems”, M.Mazidi. “8051 micro-controller architecture”, Kenneth Aayala Electronic For You ‘Electronics design’ magazine www.dogpile.com www.howstuffworks.com www.google.com www.weikipedia.com www.nationalsemiconductor.com www.datasheet4u.com www.encyclopediaofelectronics.com www.figaro.com
tecnocrats Infotech 9540854414