Shock Sensor Question

[Programmer]

I'm not sure, but what about the ride height sensors used
on an air-ride car ? Lincoln for example used a hall-effect sensor for
determining ride height.

Lyndon

----- Original Message -----
From: <Steve.Flanagan at VerizonWireless.com>
To: <diy_efi at diy-efi.org>
Sent: Monday, December 10, 2001 3:42 PM
Subject: Shock Sensor Question


> Anyone have a brainstorm of an inexpensive shock sensor.
>
> Linear position sensor are on the order of $180 US per sensor, as you can
> see this gets expensive  for 2 and maybe 4 sensors (front and back).
>
> I had thought of using a rotary pot, with a  pulley, return spring, you
get
> the idea, but from speaking with someone who mentioned they tried
something
> similar, they said the rotary pots do not react fast enough for the
> frequencies that the shock moves.  Instead of the Rotary Pot, how about
> interfacing an optical sensor from a PC mouse in its place,  does anyone
> have an idea if the mouse optical sensor could be made to react fast
enough?
>
>
> I have been thinking of maybe a different optical approach, but I do not
> know the easiest way to do this.  Maybe a pulsed light / laser, to a
> reflector, measure the round trip time, speed of light should handle any
> frequencies that a shock can move at.
>
> Do some of you engineers out there have any good ideas that we could
tackle
> to try to build a cheap way to measure shock position on a Drag race car.
>
> Thanks
>
> Steve F
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