Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.
Embedded System in Automobile
By : Amit Kumar Sah
Roll No: 09/ECE/73
NIT Durgapur
Embedded System- Definition?
“An embedded system is a
combination of hardware and
software which creates a
dedicated compu...
• FPGA (Field-Programmable Gate Array) : A type of logic chip that can be programmed & supports
thousands of gates
•ASIC (...
Characteristics of embedded systems
 Sophisticated functionality.
 Often have to run sophisticated algorithms or multipl...
Automotive Systems: Technology in today's vehicle
 Air Bags
 The Black Box
 Anti-lock Brake System(ABS)
 Adaptive Crui...
Air Bags : Principle of function
 It is from the Newton's 2nd law of
motion
 It basically restrains the
continuous motio...
Event Data Recorder-EDR or the The "Black Box"
 The Event Data Recorder (EDR) in
an automobile is based upon the
sensors ...
Anti-lock Braking System(ABS)
 Up until the seventies, hitting the brakes too
hard could lead to an accident.
 The reaso...
Principle of functioning
 Wheel-speed sensors detect whether a wheel is showing a tendency to
lock-up
 In case of a lock...
Dynamic Traction & Stability Control
 The traction control system is required to prevent driver error from
overloading an...
Dynamic Traction & Stability Control
Fig: The Principle of Functioning of TCS with brakes
Intelligent Cruise Control
 Cooperative Adaptive Cruise Control with Collision Warning (CACC +
CW)
 CACC: Cruise at give...
Drive by wire
 Drive-by-Wire replaces mechanical connections – push rods,rack
& pinion, steering columns, overhead cams, ...
Toyota’s Autonomous Vehicle Technology
Conclusion : It’s a connected drive
THANK YOU
Upcoming SlideShare
Loading in …5
×

Embedded system in automobile

My final year seminar ppt on Embedded system in automobile.

  • Login to see the comments

Embedded system in automobile

  1. 1. Embedded System in Automobile By : Amit Kumar Sah Roll No: 09/ECE/73 NIT Durgapur
  2. 2. Embedded System- Definition? “An embedded system is a combination of hardware and software which creates a dedicated computer system that performs specific, pre- defined tasks and which is encapsulated within the device it controls (if it is part of a larger device).”
  3. 3. • FPGA (Field-Programmable Gate Array) : A type of logic chip that can be programmed & supports thousands of gates •ASIC (Application-specific integrated circuit): An integrated circuit (IC) that has been customized for a specific use Embedded system components
  4. 4. Characteristics of embedded systems  Sophisticated functionality.  Often have to run sophisticated algorithms or multiple algorithms.  Often provide sophisticated user interfaces.  Real-time operation .  Must finish operations by deadlines  Many systems are multi-rate must handle operations at widely varying rates  Low manufacturing cost.  Low power.  Designed to tight deadlines by small teams.
  5. 5. Automotive Systems: Technology in today's vehicle  Air Bags  The Black Box  Anti-lock Brake System(ABS)  Adaptive Cruise Control  Drive by wire  Satellite Radio Eg:XM  Telematics Eg:OnStar  Rain-sensing Wipers  Emission Control  Traction Control  Automatic Parking  In-vehicle entertainment  Heads-up display  Night Vision  Back-up collision sensor  Navigation Systems  Tire Pressure Monitor  Climate Control
  6. 6. Air Bags : Principle of function  It is from the Newton's 2nd law of motion  It basically restrains the continuous motion of the passenger, by giving a soft surface to land on.  AIR BAGS are among the most important safety improvements added to cars and light trucks in recent years, providing extra protection for front-seat occupants in head-on crashes.  And of late, every passengers protection Fig : Air Bag- Working
  7. 7. Event Data Recorder-EDR or the The "Black Box"  The Event Data Recorder (EDR) in an automobile is based upon the sensors and microprocessor computer system that are used to activate the airbag in the vehicle during a crash.  The SDM, which is controlled by a microprocessor, has multiple functions: (1) It determines if a severe enough impact has occurred to warrant deployment of the air bag; (2) It monitors the air bags components; (3) It permanently records information. Black Box – Exterior View Black Box – Interior View
  8. 8. Anti-lock Braking System(ABS)  Up until the seventies, hitting the brakes too hard could lead to an accident.  The reason: When the coefficient of slip between tires and road surface is too low, hitting the brakes can cause wheel lock-up. The vehicle is no longer steerable and goes into a skid.  In particular, this danger is present  On wet or slippery road surfaces with different levels of grip between tires and road  On preventing wheel lock-up:  Reduces the total braking distance as far as possible  Increase vehicle stability  Maintains steer ability even in case of all-out braking Without ABS The vehicle in no longer steerable when driver hits the brake With ABS The vehicle remains steerable even during panic
  9. 9. Principle of functioning  Wheel-speed sensors detect whether a wheel is showing a tendency to lock-up  In case of a lock-up tendency, the electronic control unit reduces the braking pressure individually at the wheel concerned  High-speed correction of the braking pressure up to shortly before the lock-up threshold  The brake-fluid return together with the closed-loop brake circuits makes this a safe, reliable, and cost-effective system Advantage  A gain for driving safety  The vehicle remains steerable, even in case of panic braking  Shorter stopping distances on practically all road surfaces  Many accidents are avoided
  10. 10. Dynamic Traction & Stability Control  The traction control system is required to prevent driver error from overloading any of the four wheels and causing slip, through either throttle or brake application  Drastically improve vehicle performance and safety by maintaining optimal wheel traction in all road conditions  The basic principle is always the adaptation of the wheel torque to the coefficient of friction between the wheel and the road surface.  To this end, the systems make use of different intervention methods  In the wheel brakes  In the drivetrain control
  11. 11. Dynamic Traction & Stability Control Fig: The Principle of Functioning of TCS with brakes
  12. 12. Intelligent Cruise Control  Cooperative Adaptive Cruise Control with Collision Warning (CACC + CW)  CACC: Cruise at given speed when the road is clear (cruise control) otherwise follow the car in front, using radar (adaptive) and/or communications (cooperative).  CW: Warn the driver when an object is being approached too fast, or is too close How it works :  Uses forward-looking radar, installed behind the grill of a vehicle, to detect the speed and distance of the vehicle ahead of it.  Can automatically adjust speed in order to maintain a proper distance between vehicles in the same lane
  13. 13. Drive by wire  Drive-by-Wire replaces mechanical connections – push rods,rack & pinion, steering columns, overhead cams, cables – by mechatronic connections – sensors, actuators, embedded microprocessors, control software Fig: Drive-by-Wire Throttle Control Fig: Future Car with drive by wire technology
  14. 14. Toyota’s Autonomous Vehicle Technology
  15. 15. Conclusion : It’s a connected drive
  16. 16. THANK YOU

×