Re: measuring distance between two cars using infrared circuits

From: Robert Monsen (rcsurname_at_comcast.net)
Date: 01/24/05 

Date: Mon, 24 Jan 2005 12:27:29 -0800

gaurav.patil@gmail.com wrote:
> hello,
> i want to construct a circuit which will be able to measure distance
> between two moving cars.The two cars are needed to maintain a fixed
> distance between each other.
> if the distance between them increases or decreases the circuit
> should be able to detect this change and notify the amount of change
> in the distance to both cars.
> i want to construct this circuit using infrared LEDS ,so if any one
> can help me out with this(circuit idea) please mail it to me .

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=73916&item=7129299161&rd=1&tc=photo

Mount it on your car so it fires directly forward. Hack the output
section so it gives a signal which can be fed into your cruise control...

;) 

-- 
Regards,
   Robert Monsen
"Your Highness, I have no need of this hypothesis."
     - Pierre Laplace (1749-1827), to Napoleon,
        on why his works on celestial mechanics make no mention of God.

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