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PostPosted: Sun May 09, 2010 00:52 
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I was merrily bumbling along London's roads when I happened across an experimental camera setup on the A3.
It must have been there for a while as Google's omnipresent eye has caught it.


Anyway, I happened to have some of my ever useful IR camera kit on me...
(click on the photos to fully display them)

From the front:

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setup front.jpg [80.14 KiB]
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Note the parabolic reflectors (with the orange filter) within the front and middle units.

From the rear:

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setup rear.jpg [76.13 KiB]
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Here is a closeup of the cameras inside the middle unit (the top hole):

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innards 2.jpg [82.18 KiB]
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Here's a photo of the IR array (front unit) in operation:

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IR array.jpg [53.41 KiB]
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This puppy always flashes about 4-5 times a second, clearly fully time ANPR. The right one was inactive when I observed it, is that one a triggered flash?

One for the geeks:

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innards 1.jpg [189.78 KiB]
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No IR filter has ever stopped Stevie :D

And finally, the contents of the rear housing:

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empty.jpg [57.41 KiB]
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:lol: :clap:


There are no sensors buried within the road surface.
A question that escapes me is whether this is just an ANPR camera setup, or one for an actual speed camera (with ANPR).
If the latter: where is the speed sensor, and why the graduation marks? If not, what are the parabolic reflectors for?

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PostPosted: Sun May 09, 2010 03:25 
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Good images ! :clap:
I like the spider webs ! They have been there a while then even the empty one !

Hard to know what the bulb is for ... :scratchchin:

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PostPosted: Sun May 09, 2010 10:02 
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I wonder why they use dark glass on the ir emitter....since they are using led's there would seem no reason for that..
Interesting control electronics as well....I wonder if the flash rate is variable too....seems a rather large amount of electronics to control the led array....

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PostPosted: Sun May 09, 2010 14:41 
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What kind of speed camera is that in the background? There's one of them in Poole now, also "on test".


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PostPosted: Sun May 09, 2010 16:47 
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I reckon they are testing possibly several 'vision of target' aides. [As in a trial for best lighting options to enable the best way to gain maximum targets for prosecution without image errors and satisfy Court processes.]
I wonder if the bulb adds to the IR display in some manner at some point ... ?

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