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    Embedded in Automobiles: M.Dilip Gupta 10841A04A6

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    Krishna Praneeth
    This document discusses embedded systems in automobiles. It defines an embedded system as a combination of hardware and software that performs predefined tasks within a larger device. Automotive embedded systems include components like microcontrollers and sensors. Key characteristics are real-time operation, low power usage, and reliability. The design process involves requirements, specification, architecture, components, and integration. Challenges include meeting deadlines, power consumption, and upgradeability. Modern automotive technologies discussed include airbags, black boxes, ABS, stability control, and drive-by-wire systems. These systems improve safety and vehicle control through sensors and microprocessors.

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    Embedded in Automobiles: M.Dilip Gupta 10841A04A6

    Uploaded by

    Krishna Praneeth
    18 views19 pages
    This document discusses embedded systems in automobiles. It defines an embedded system as a combination of hardware and software that performs predefined tasks within a larger device. Automotive embedded systems include components like microcontrollers and sensors. Key characteristics are real-time operation, low power usage, and reliability. The design process involves requirements, specification, architecture, components, and integration. Challenges include meeting deadlines, power consumption, and upgradeability. Modern automotive technologies discussed include airbags, black boxes, ABS, stability control, and drive-by-wire systems. These systems improve safety and vehicle control through sensors and microprocessors.

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    This document discusses embedded systems in automobiles. It defines an embedded system as a combination of hardware and software that performs predefined tasks within a larger device. Automotive embedded systems include components like microcontrollers and sensors. Key characteristics are real-time operation, low power usage, and reliability. The design process involves requirements, specification, architecture, components, and integration. Challenges include meeting deadlines, power consumption, and upgradeability. Modern automotive technologies discussed include airbags, black boxes, ABS, stability control, and drive-by-wire systems. These systems improve safety and vehicle control through sensors and microprocessors.

    Copyright:

    © All Rights Reserved
    Download as PPTX, PDF, TXT or read online from Scribd
    Download as pptx, pdf, or txt
    18 views19 pages

    Embedded in Automobiles: M.Dilip Gupta 10841A04A6

    Uploaded by

    Krishna Praneeth
    This document discusses embedded systems in automobiles. It defines an embedded system as a combination of hardware and software that performs predefined tasks within a larger device. Automotive embedded systems include components like microcontrollers and sensors. Key characteristics are real-time operation, low power usage, and reliability. The design process involves requirements, specification, architecture, components, and integration. Challenges include meeting deadlines, power consumption, and upgradeability. Modern automotive technologies discussed include airbags, black boxes, ABS, stability control, and drive-by-wire systems. These systems improve safety and vehicle control through sensors and microprocessors.

    Copyright:

    © All Rights Reserved
    Download as PPTX, PDF, TXT or read online from Scribd
    Download as pptx, pdf, or txt
    of 19

    EMBEDDED IN AUTOMOBILES

    BY

    M.Dilip Gupta
    10841A04A6

    CONTENT

    Definition
    Embedded system components
    Characteristics
    Design process
    Challenges
    Todays tech in automobiles
    Air bags
    Black box
    Abs
    Automatic stability control
    Drive by wire
    conclusion

    Embedded System- Definition?


    An embedded system is a
    combination of hardware and
    software which creates a
    dedicated computer system
    that performs specific, predefined tasks and which is
    encapsulated within the
    device it controls (if it is part
    of a larger device).

    Embedded system components

    Characteristics of embedded systems

    User Interface
    Real-time operation

    Multi Rate

    Low manufacturing cost.


    Low power

    Design Process
    Requirements
    Specification
    Architecture
    Components
    System Integration

    Challenges During Design Process

    Hardware
    Deadlines
    Power Consumption
    Upgradeability
    Reliability

    Automotive Systems: Technology in today's


    vehicle

    Air Bags
    Rain-sensing Wipers
    Emission Control
    Traction Control
    Automatic Parking
    Back-up collision sensor
    Navigation Systems
    Tire Pressure Monitor
    Climate Control

    Air Bags : Principle of function

    It is from the Newton's 2nd law


    of motion
    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-

    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)

    (2)

    Black Box Exterior


    View

    It monitors the air bags


    components;
    It permanently records
    information.
    Black Box Interior View

    Anti-lock Braking System(ABS)

    Up until the seventies, hitting


    the brakes too hard could
    lead to an accident.
    On preventing wheel lock-up:

    Reduces the total braking


    distance as far as possible
    Increase vehicle stability
    Without ABS
    The vehicle in no longer steerable when
    driver hits the brake
    With ABS
    The vehicle remains steerable even during

    Principle of functioning of an ABS

    The function of an anti-lock brake system is to minimize


    skidding by releasing brakes on wheels(it does so when
    wheels are moving slowly)
    An ABS is placed between brakes and hydraulic pump
    It uses sensor for each wheel ,so that the speed of the
    wheel can be measured,then these speeds are used by
    the abs to identify the amount of hydraulic fluid pressure
    that needs to be varied to reduce skidding

    Automatic Stability Control

    The function of ASC+T system is to improve the stability


    of the car during its movement.
    Gear shifting ,ignition timing ,throttle and different brake
    are the four systems controlled by ASC+T system
    It plays an important role different tire snows operation.
    This can be turned ON or OFF by the driver.

    Automatic Stability Control

    Fig: The Principle of Functioning of TCS with

    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

    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

    Conclusion : Its a connected drive

    Quries..?

    THANK YOU

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