safety device for automobiles in curves

Discussion in 'The Projects Forum' started by, Aug 20, 2014.

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    Thread Starter New Member

    Aug 20, 2014
    hi everyone,

    i am a mechanical engineer, i got a project that needs some electronic devices and circuits, can anyone help me to design the circuit?

    my project description is as follows,

    1. While we drive an automobile we often experience skidding while taking curves at higher speeds, this may turn fatal to some fellow drivers, to avoid such over-speeding in curved roads i like to employ a transmitter a few distance away from the curve which transmits the max. safe speed of that curve ahead (circuit 1)

    2. A receiver part inside the vehicle receives this signal

    3. The data received is compared with actual speed of the vehicle, if the actual speed exceeds the design safe speed of the curve, an alert system with LED Display and a siren or vibrator works to notify the driver

    4. if the driver is not reacted in time the brakes are applied automatically with EBS (electronic braking system)

    5. as a part of its demonstration i have to build a line follower with freeduino 1.1. building a line follower is ok for myself but i donno how to interface it with the above circuits

    please could help me with the above circuits 1 to 4 (any one of them alone is also considered to be great ) and tell me how to interfacing it with a line follower,

    thank you in advance
  2. Alec_t

    AAC Fanatic!

    Sep 17, 2013
    Have you read the Terms of Service of this site? Autmobile mods aren't an allowable topic here.
  3. MikeML

    AAC Fanatic!

    Oct 2, 2009
    Not in my automobile...
    shortbus likes this.
  4. Alec_t

    AAC Fanatic!

    Sep 17, 2013
    We have a simpler system in the's called a road sign :). This is in advance of the bend and warns of the maximum safe speed.
  5. Dodgydave

    AAC Fanatic!

    Jun 22, 2012
    +1, don't forget the speed the US they are located behind billboards.:D
  6. wayneh


    Sep 9, 2010
    Two parallel magnet lines could be implanted in and perpendicular to the road bed. The time interval detected between sensing of the two strips gives an immediate indication of speed relative to the designer's target. The distance between the parallel lines would indicate the safe speed, so for instance if they were sensed 10ms apart, the car would be at the safe speed. There may be better ways to indicate the interval. Reflectors would work in the lab, if not in real life.

    Modern cars have a computer that knows the speed, so that value is readily accessible. You need a computer that can control acceleration and braking, that can react to the difference between actual and target speed. That's usually the driver.
  7. MrSmoofy


    Jul 28, 2014
    How will I ever drift around a corner if I help you make this device :D
  8. cork_ie

    Active Member

    Oct 8, 2011
    ESP (Electronic stability control) does exactly what you are trying to design and is already fitted in nearly every modern European vehicle.
    The basics of the system is that the vehicle has a built in acceleration sensor which outputs lateral acceleration , longitudinal acceleration, and yaw rate -(turning force of the vehicle about an imaginary Z axis in the centre of the vehicle). All this information is placed on the CAN bus. When the vehicle exceeds the design paramteters or if skidding is detected, the ESP system takes control, the engine power is reduced as required and the brakes automatically applied diagonally via the ABS modulator to help straighten the vehicle.
    Newer technology in 2010+ vehicles includes a further elaboration of the system called collision avoidance system which uses forward looking radar as an additional input.
    Last edited: Aug 20, 2014
  9. tom_s


    Jun 27, 2014
    no, that only works on the assumption that the driver of the vehicle is actually paying attention to the road conditions.
  10. djsfantasi

    AAC Fanatic!

    Apr 11, 2010
    Something my wife always states: youth are eventually not going to drive their vehicles. Parallel parking is already threatened to become a lost skill. Collision avoidance, radar following, and other techno gadgets will eventually result in a car that drives us.
  11. Wendy


    Mar 24, 2008
    The owners of All About Circuits has elected not to host discussions of automotive electrical system modifications/enhancements due to safety concerns, the potential of legal ramifications and the possible circumvention of vehicle regulations at the state and federal level.

    This thread is against the AAC forum rules, Chapter 6, as seen here:

    This can be found in our Terms of Service (ToS)

    Automotive modifications of any kind are strictly forbidden. Therefore, this thread will be closed.

    Please try to understand the reasons behind this action, and feel free to browse and use the forums.

    You might find answers to your questions in one of these forums:

    Another good forum that shares many of the same membership is . Good luck.
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