speed cameras sensor

Discussion in 'General Electronics Chat' started by bug13, Jun 15, 2014.

  1. bug13

    Thread Starter Well-Known Member

    Feb 13, 2012
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    Hi guys

    Anyone knows about what kind of sensors are used in speed camera ?

    And how do they cover a large area, like the width of a road?

    Thanks guys!
     
  2. bertus

    Administrator

    Apr 5, 2008
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    bug13 likes this.
  3. bug13

    Thread Starter Well-Known Member

    Feb 13, 2012
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  4. bertus

    Administrator

    Apr 5, 2008
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    Last edited: Jun 15, 2014
  5. AnalogKid

    Distinguished Member

    Aug 1, 2013
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    The one near my house has inductive sensors in the pavement, similar to traffic light detectors.

    ak
     
  6. alfacliff

    Well-Known Member

    Dec 13, 2013
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    ultrasonic sensors have too short a range.
     
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  7. kubeek

    AAC Fanatic!

    Sep 20, 2005
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    Some types really are cameras, they use standard optical sensor chips and then process the picture and license plates. These are mostly used in pairs to enforce speed limits throughout a long stretch of road or a tunnel, by calculating the average speed of each vehicle.
     
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