mini project

Discussion in 'General Electronics Chat' started by vivek.raunak, Dec 7, 2010.

  1. vivek.raunak

    Thread Starter New Member

    Oct 23, 2010
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    plz suggest me any simple project with ics' DAC,ADC,opamp,555 timer etc.
    give me any link regarding this.
     
  2. bertus

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    Apr 5, 2008
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    vivek.raunak likes this.
  3. t06afre

    AAC Fanatic!

    May 11, 2009
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    I would have used Google. It is a lot projects out on the net. The quality may vary. But feel free to post any question here. It is more easy to help on specific questions.
    Also then you post always include your schematic. Then we will be able to help you much faster.
     
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  4. vivek.raunak

    Thread Starter New Member

    Oct 23, 2010
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    hi
    one idea in my mind is to design a circuit for traffic light,which can measure intensity of traffic also..
    how the circuit can sense the intensity of traffic?
     
  5. bertus

    Administrator

    Apr 5, 2008
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    Hello,

    The amount of traffics can be measured with loop in the road.
    When a car passes you can detect the car using the loop.

    You can feedback the loop information to a microcontroller, that can take the desission wich way should have a green light for a smooth traffic handling.

    Bertus
     
  6. vivek.raunak

    Thread Starter New Member

    Oct 23, 2010
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    but here is restriction to use microcontroller
    do any one have another idea?
    plz suggest..
     
  7. bertus

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  8. retched

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    Counting traffic is easy.

    Set a timer for a minute.

    Use a button to represent a signal from a car detector loop.

    Count the number of button presses in on minute.

    Now, you can wait ten minutes, and average the numbers.

    So you now can figure, if you have a red light for 1min 30sec, how many cars will be lined up,stopped.

    If the number of cars is too high, for instance if the street can only hold 22 cars before they are in the previous intersections, you want to be sure the light changes back to green before 22 cars are stopped.

    Adjust the time of the cycle depending on the number of cars per minute.
     
  9. vivek.raunak

    Thread Starter New Member

    Oct 23, 2010
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    what is car detecting loop?
     
  10. retched

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    A loop of wire that is put into the ground at stop lights.
    It is basically a metal detector.

    When an automobile drives over the loop, the control "knows".

    It produces a signal when a car is present.
     
  11. jpanhalt

    AAC Fanatic!

    Jan 18, 2008
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    Ever been in downtown Philadelphia gridlock?

    Let's see, no new presses, I guess the light should stay red. Or, make them all green. Same outcome. :D

    John
     
  12. Audioguru

    New Member

    Dec 20, 2007
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    Most in-the-road metal detectors do not properly control the flow of traffic.

    I think a clock is used instead but it is set to a weekend when the actual day is a working day. On a Saturday or Sunday the traffic light blocks everybody but allows "nobody" to turn for a long time. Then on a working day nobody can turn and nobody can go anywhere.
     
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