Transcript Presentation - Rajeev Rai Bhatia

Rajeev Rai Bhatia
2K7-MRCE-ME-040
Team:
Rajeev R Bhatia
Tushar Chugh
Adeel Kidwai
Mentor:
Prof. M.S. Giri
Every year thousands of Soldiers die fighting for their country. Their
job
is the hardest one in which they have to confront the enemies. And
now
the terrorist attacks have made their job deadly.
The Soldiers are employed on borders where the climate and other
conditions like:
 High and Low Temperature
 Extensive Pressure
 High Humidity
 Hazardous Environment
 There the idea of WiziTank came to our mind. We thought why
always the soldiers have to be in front of the enemy if it's the
machines then we can save thousands of lives.
 Wizitank can be handful in suicide attacks, bomb diffusion and
more situations in which now Soldiers have to risk their lives.
These vehicles can be used in areas at which we can't reach.
 Not only we save the shedding of blood but also we save lots of
other resources with implementation a number of WiziTanks.
Ultrasonic
Sensors
Wireless
CCD
Camera
Digital
Magnetic
Compass
Ebox
Actuators
Global
Positioning
Device
Ultrasonic sensors (ULS)
Ultrasonic signals are like audible sound waves, except the
frequencies are much higher.
Ultrasonic transducers have piezoelectric crystals which
resonate to a desired frequency and convert electric energy into
acoustic energy and vice versa. Variables which can affect the
operation of an ultrasonic sensor include: target surface angle,
reflective surface roughness, and change in temperature or
humidity. The targets can have any kind of reflective form and
even round objects are an acceptable target.
 Positioning for the Wizitank is accomplished by one GPS unit
(Global Positioning System) and an electrical compass.
 The GPS unit uses GLOBALSAT ET-314 as the GPS Engine
Board. This is a compact, high performance, and low power
consumption (voltage required is 3.3 V) GPS engine board. It
uses SiRF Star III chipset which can track up to 20 satellites at
a time and perform TTFF (Time to first fix) in weak signal
environments. It supports NMEA 0183 and SiRF binary
protocols. Here we will be using NMEA 0183 v2.2 protocol
(GGA, GSA, GSV, RMC, GLL, VTG). Serial port is used for
communication with a baud rate of 9600.
 As the GPS tell about the location (lat, long) but not the angle of
the vehicle therefore we have to use some other device for this
reason.
 Therefore, we use an Electric compass (made by Honeywell
with I2c interface) to find out the actual direction of the vehicle.
This gives the output to the microcontroller which then
transmits the data to E-box.
 Wizitank uses a single CCD Camera as the vision sensors/
video capture device. CCD Camera converts light into electric
charges and process it into electrical signals. In a CCD sensor,
every pixel is transferred through a very limited number of
output nodes to convert into voltage, buffered, and the output’s
uniformity (a key factor for image quality) is high. CCD offers
excellent imaging performance benchmarks in photography
related to scientific research and other important areas.
 Wizitank is operated using a single CCD Camera which
functions collectively to detect the path by color sensing
deployed on the sides of the path as well as these detect the
obstacles while working in the autonomous mode and video
capture device while working in the manual mode.
 The positioning of the camera is the centre of the front bumper.
The function of the camera (CAM1) is to give an idea of the
topography as well as some details about the obstacle and to
detect the colored strips (if provided) provided along the path.
The output is fed directly to E-box through USB.
 Software Architecture is one of the main areas which are to be
emphasized. So after integrating the above mechanical and
electronic modules we have to treat autonomous navigation as
software problem.
 The hardware diagram explains how various input devices are
connecting to the processing unit which processes the
information and finally it gives the output to the actuators.
CCD
CAMERA
GLOBAL
POSITIONING
DEVICE AND
COMPASS
ULTRASONIC
SENSORS
Ebox and Microcontrollers