SREE VIDYANIKETHAN COLLEGE OF

ENGINEERING
TECHNICAL PAPER PRESENTATION
TOPIC: EMBEDDED SYSTEMS
SUB: AUTOMATION OF CARS

FOR
KONERU LAKSHMIAH COLLEGE OF ENGINEERING

AUTHORS: P.ANITHA (05121A1505),

Anitha_csse05@yahoo.co.in
Satya.csse38@gmail.com
Abstract:
The technical Brilliance and Developments in contains a microprocessor, some memory & I/O
different fields has led to a drastic change interface circuitry useful in embedded applications
especially in the communication field. Devices and is often called an EMBEDDED
with intelligence rule the world. Imbibing PROCESSOR or MICRO CONTROLLER chips
intelligence to these devices is through a system as they perform important control functions, and
called EMBEDDED SYSTEMS. It is the are based on micro controller.
evolution or further development of the computing The current topic Automation of car that we are
system. Its applications provide marvelous going to present is one of the fine examples of
opportunities for ingenious use of computer Embedded System.
technology. Almost every new system introduced is
an example of Embedded System. These systems
Autonomous car: There are many
are more intelligent and autonomous.
paradigm shifts taking place due to information
Embedded Systems are combinations of hardware
explosion and the concept of autonomous vehicle
and software that are mounted on compact
is one shift. The car, which is embedded, can
electronic circuit boards integrated into devices.
simulate the human driver completely and direct
They are engineered or intended to perform one
the vehicle on the road. Autonomous vehicle is the
specific function in a specific environment. An
drastic change in technical brilliance and
important decision in the design of an embedded
developments in different fields with
system is the selection of the processor(s) around
EMBEDDED SYSTEM as pioneer.
which the rest of the system is
to be built. It is a chip that
 computer on dashboards. From ordering pizza to
booking tickets at the nearest theatre, things would
be as easy as giving orders to your servant. As a
matter of fact, vehicles all over the world are now
fitted with intelligent devices that make the
vehicles to respond to various factors be it
climate control, sudden accelerations or braking or
even self-repair of modules.
Introduction:
The finger print technologies have been introduced
The term embedded system is quite a
to enter and start your car with the touch of a
complex one. Simply it is a combination of
finger. The fingerprint, which is acting as a key,
hardware and software that forms the component
would trigger a check of the mirrors, steering
of a larger system, this in turn is programmed to
wheel, radio and temperature to ensure that they're
perform a range of dedicated functions usually
the way you like them. The convenience of
with a minimal operator intervention. In embedded
fingerprint recognition technology comes with
systems the hardware is normally unique to a given
heightened security. Unlike personal identification
application, computer chips are embedded into the
numbers, passwords and keys, each person's
control electronics to manage the products
unique fingerprints can't be duplicated, lost or
functionality.
forgotten.
Embedded systems are rapidly
becoming a catalyst for change in computing data
Description:
communications, telecommunications, industrial As stated above that a vehicle can run
control and entertainment sectors. New innovative by itself with out the intervention of human beings
applications in these as well as other areas such as by the embedded intelligence in it. For this
home networking and car infotainment will roll out purpose Global Positioning System (G.P.S) using
in the near feature. satellites can provide positioning information and
proves to be a versatile all-time. For still higher
The fine art of automation:
accuracy wide area differential GPS is used, which
We load the code of our destination in
offers a robust system that readily deals with
the dashboard computer and turn the car on, while
selective availability errors and satellite clock
we remain seated carefree on the rear seats. Then
errors.
its all the job of the unknown to drive it on the
The models for GPS also include aiding sensors,
roads, bridges, thought the bazaars, past the
e.g. dead reckoning, radar and camera. A computer
crossings to the destination, without getting
is simply required to feed destination into a
challenged even once for traffic rule violations.
dashboard computer. Highly sensitive actuators
A fully computerized car capable of
simulate a human driver completely and direct the
doing almost every thing a car lover would want
vehicle on the road. The vehicle transmitter
to. Almost all automobiles will interact with
broadcasts its position and velocity to other
immediate participants for collision-avoidance and instrumented position location systems (PLS)
lane changing manoeuvres. Forward and reverse installed on the autonomous vehicles through a
motions and u-turns are precisely achieved as per data link sub system (DLS). The DLS can either
route guidance requirements. Furthermore, an use VHF or UHF or L-band, incorporating time
accurate steering control is obtained using Pulse division multiple access protocol to handle on the
Code Modulation technique and roads. A block forward error correction code is
acceleration/braking control is successfully employed to protect and maintain the message
implemented using learning adaptive system The integrity.
reliability, efficiency and cost effectiveness of an
autonomous vehicle depend mainly on how
judiciously its navigation sensors, perception unit
and computer control is incorporated.
The drivers activity is influenced by several
factors that depend on driver itself and is
environment such as traffic density, traffic status,
time of travel and weather. Thus the driving
activity deals with a combined driver vehicle-
environment system shown in figure
The vehicle is required to blend its
environmental perception capabilities with its The desired destination and starting position of the
intelligent controls in order to affect optimal path- vehicle together with the time of travel, manifest
planning strategies that not only avoid obstacles an optimal route on the road network. Once the
but also minimize criteria such as time of travel, vehicle commences the journey the sensors
fuel consumption, exposure to pollution/danger, continuously keep track of the direction and
etc. however basic driving functions consists of displacement of the vehicle initial calibration is a
lane-keeping, safe distance maintenance, timely little crucial for dead reckoning performance; how
lane changing and overtaking. The key to all these ever a feed back calibration indicated in fig
driving tasks is collision avoidance. suggested to obtain distance accuracy better than
The Master Control Station (MCS) 99.9 percent.
receives the positioning information from the
satellite by employing WADGPS concept. The
MCS is
linked to
GPS
 The new generation microprocessors angle increments for a safe and accident free
promises further increase in system capabilities manoeuvre. The following figure gives an
while simultaneously shrinking both volume and indication of all the technologies used in a car
power consumption of the autonomous vehicle .
embedded system. The digital road maps, available
Advantages and comforts:
on CD-ROMs have substantially increased safety
1. The adoptive cruise control ACC
of automobiles. These maps along with GPS
technology used in the cars from automobile
navigation provide a
makers keeps advancing to new levels of safety. In
Feasible solution to autonomous vehicle system.
microwave radar unit there is a laser transceiver,
The expert system technologies are integrated with
fixed on the front of the car to determine the
digital maps along with the CCD camera images,
distance and relative speed of any vehicle in its
magnetic compass, and the GPS system, for
path, which keeps safe distances from other
obtaining a real time intelligent decision support
vehicles on the busy roads. The driver can set the
navigation package. The integration of GPS and
speed of his car and the distance between his and
communication suggests an efficient transportation
other cars. When traffic slows down vehicle speed
system for increasing the road traffic safety smooth
is altered using moderate braking to maintain a
driving without traffic jams and a comfortable
constant distance between his and other cars.
driving environment. Further more the autonomous
2. In advanced systems just in the case
vehicle relies on such intelligent system integration
the driver over speeds or suddenly falls over and
that leads to complete collision free in time of real
guides the car to a safe halt. And if you have
time situation.
programmed it right, the GPS in the car would take
The internal platform and rate gyro and
you to your destination .so, right from brakes to
accelerometer package keeps the vehicles central
automatic traction control to air bags and fuel-air
processing unit (CPU) well informed about the
mixture control, the intelligence takes over
incremental changes in the vehicles parameters.
3. A few advanced car prototypes with
The wheel odometers provide the vehicle traveling
embedded systems have been tried and tested
distances by multiplying the number of
electronically generated pulses by a constant,
depending upon wheels perimeter
The information concerning deviation from the
road center is obtained by magnetic as well as
optical sensors, and fed to the CPU. The GPS
receiver updates the vehicles position and velocity
to centimeter/decimeter levels as required for the
lateral or longitudinal control actions. The
autonomous vehicle embedded software mission
finally yields the estimates for throttle and heading
where even if a smart thief has managed to break
in through the car, the car doesnt start up even if it GPS navigation guides you through the traffic. The
does the computer I the car would lock the steering GPS interface in the car pinpoints your exact
wheel and cutoff the fuel injection supply in the location on a map. In case the GPS signal cant be
mean time a signal is set to the nearest police received due to high density of tall buildings or
station and the owner informing them about the other magnetic interface, the dead reckoning
thief. technique, which works for short durations guides
4. Some designs now include so-called you effectively. The system is also loaded with
"pre-safe" systems, which sense possible collisions GSM/CDMA protocol standards further modified
in advance based on emergency braking, skidding, on the CANBUS standard t give uninterrupted
and sudden evasive maneuvers. They will prepare information.
a car by automatically moving the front seat either
backward or forward for the safest distance from Another device called the array
the instrument panel, adjusting the seat belt for the microphone cuts off the surrounding noise and
correct tension, and even closing the sunroof in allows the speaker to communicate effectively. The
case of a potential rollover. The idea is to "cradle" person at the other end hears the voice of the
the car's occupants for maximum safety. speaker without any out side interference.

Indian efforts in embedded system Conclusion:

Our India too entered into the field of autonomous car is no more a myth. Its a reality!

embedded systems and had great developments in We would like to present that there must be further

this field. it got marvelous results in the field of developments in this technology to make

Telematics which is a part of technology used in autonomous car more common all over the world.

cars. This can be happened by making the autonomous

Total telematics experience is what easy to operate for the user and the designers

they are looking for simply put telematics is the should concentrate more in producing autonomous

vehicles capability to communicate with the cars, which should not cost a lot, they should in the

outside world and or the vehicle operator. It is a vicinity of customers budget. With this type of

combination of telecommunication and computing vehicles there will be great advantages in the

Mistral software, which was developed coming feature. Due to speed control technique,

in India, has text-to-speech and speech recognition accident free driving is possible and fuel savage is

technologies to give the car occupants the ultimate also made possible by the technique, which will

comfort. So whenever there is a call on your make the car to travel through shortest path. In the

mobile. You need not get jump at the very onset of near future, autonomous car become more

the call. Relax the computer in the cars dashboard common all over the world. Indian efforts in the

would do the job for you. embedded technology can assure that these
autonomous cars will become cheaper and may
 evolve with many more advantages. So that we 4. www.vivisimo.com
could find ourselves using these autonomous cars
in the near feature.

REFERENCES:
. 1. www.electronicsforyou.com
2. www.feture-fab.com
3. www.signaling-gatewave.org