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What sort of sensor is used in police laser detector systems? — Parallax Forums

What sort of sensor is used in police laser detector systems?

ElectricAyeElectricAye Posts: 4,561
edited 2012-04-12 19:12 in General Discussion
Anybody happen to know what sort of sensor is used in systems that can detect police speed lasers?
Is it a phototransistor? a PIN photodiode? or what? They aren't terribly expensive, so I'm guessing there's not much to them.
From a few tests I've done, these systems seem to react very fast, too, so I'm guessing there's not much integrating going on. Do they just detect a sudden spike? Or a pulse rate?

Just curious,
Thanks.

Comments

  • mindrobotsmindrobots Posts: 6,506
    edited 2012-04-12 18:18
    Raytheon doppler donut reflectometer.

    (I'm glad this is only my 999th posting - I'd feel reel silly wasting #1000 on this!)
  • ElectricAyeElectricAye Posts: 4,561
    edited 2012-04-12 18:32
    mindrobots wrote: »
    ...Doppler donut reflectometer...

    That sounds kinda expensive. Like something they might sell at Starbucks. You sure it's not something more in the K-mart domain?
    mindrobots wrote: »
    ... I'm glad this is only my 999th posting - I'd feel reel silly wasting #1000 on this!

    Go ahead..... waste it.... I dare you.
  • mindrobotsmindrobots Posts: 6,506
    edited 2012-04-12 19:12
    Don't be crushed....now I can start my second thousand back to my old self!

    Perhaps a trained animal based detector??

    bat-radar.jpg
    318 x 159 - 15K
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