DAQ needs

[C. Brooks]

I've built a couple one off DAQ systems for people using PCMCIA DAQ and 5B
signal conditioning modules. I went this route because of speed issues. I
would suggest the following companies for a start.

http://www.computerboards.com
http://www.ni.com
http://www.iotech.com
http://www.lptek.com/
http://www.dataq.com/
http://www.keithley.com/
http://www.national.com

LPTek is going to be the most cost effective solution for the number of
channels/sample rate you want. They offer quantity discounts as well. If
you're going to be doing any suspension monitoring you'll want a much faster
sampling speed and the LPTek system may not be able to keep up, likewise for
individual cylinder events.

Also, try to do your filtering in hardware. It makes the software MUCH
easier to write and doesn't use nearly as much over head as software
filtering. And don't forget to use a low pass filter on the input to
eliminate aliasing issues.

Charles Brooks
Mid-Atlantic Speed Shop
http://www.massmotorsports.com








----- Original Message -----
From: Paul Campbell <campbell at tcainternet.com>
To: <diy_efi at diy-efi.org>
Sent: Wednesday, July 19, 2000 12:08 PM
Subject: DAQ needs


> We are in need of a 'low-cost' DAQ board that fit somewhere within the
> following specs. These aren't necessarily ground in stone, but we would
like
> to get as close as possible:
>
> - 18-22 SE channels with at least 10bits of resolution and capable of
100sps
> - Serial or parallel port based I/O, possibly even PCMCIA
> - 3 programmable counters
>
> We've looked at several boards, but I was hoping some of you might have
> stumbled across one that fit the bill, yet was fairly low cost.
>
> Mike Glover (of Street Dyno fame) is putting together a software package
for
> DAQ called EMS (engine monitoring system) and he has decided that
obtaining
> a premade board would be the best route to take. That is if we can find
one
> that fits the bill.
>
> Thanks
>
> Paul Campbell
>
>
> --------------------------------------------------------------------------
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