Embedded system in automobile

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My final year seminar ppt on Embedded system in automobile.

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  • Beginning course details and/or books/materials needed for a class/project.
  • Beginning course details and/or books/materials needed for a class/project.
  • Beginning course details and/or books/materials needed for a class/project.
  • Beginning course details and/or books/materials needed for a class/project.
  • Beginning course details and/or books/materials needed for a class/project.
  • Beginning course details and/or books/materials needed for a class/project.
  • Beginning course details and/or books/materials needed for a class/project.
  • Beginning course details and/or books/materials needed for a class/project.
  • Beginning course details and/or books/materials needed for a class/project.
  • Beginning course details and/or books/materials needed for a class/project.
  • Beginning course details and/or books/materials needed for a class/project.
  • Beginning course details and/or books/materials needed for a class/project.
  • Beginning course details and/or books/materials needed for a class/project.
  • Beginning course details and/or books/materials needed for a class/project.
  • 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

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