Car racing: getting data from the car to the pit?
jbwolf at comcast.net
Sat Jul 17 09:30:52 CDT 2010
Do a Google search using the terms: "data acquisition telemetry for race
A lot has changed since I worked the circle jerk tracks 35 years ago.
Here are a few interesting sites that I quickly pulled from the lot, but
there are many more to be had.
http://www.afar.net/ (radio used in racing)
Consider 400 or 900 MHz with a narrow bandwidth and relatively low data
rates. (not 802.11x 20 MHz BW). You don't need high bandwidth. A narrow
bandwidth will help mitigate interference and "should" have better range.
Something to think about is the Doppler effect of the car. Use a radio
system that is in use now.
From: tacos-bounces+jbwolf=comcast.net at amrad.org
[mailto:tacos-bounces+jbwolf=comcast.net at amrad.org] On Behalf Of Terry Fox
Sent: Saturday, July 17, 2010 1:40 AM
To: tacos at amrad.org; Terry Fox
Subject: Car racing: getting data from the car to the pit?
My brother-in-law does car racing as a hobby. He is not a pro, but does
race on most of the large tracks in the eastern US. He asked me about
possibly having a radio system to transfer data from the data
acquisition dashboards in the cars to the pit in close to real-time.
Apparently the data-acq systems have real-time USB data outputs, and
update a half-dozen parameters every two seconds or so. The tracks can
be up to about two miles big, and I believe not line-of-sight, at least
from the pit.
Sometimes the driver gets too busy to monitor the dash, and they want
another set of eyes in the pit to monitor the parameters as well.
Apparently the pro racers do have this capability, but I assume it's out
of his price range to use their equipment. I told him to check and see
how they do it, what type radios, freq, etc...
He and my sister are both electrical engineers, and are comfortable with
hardware & software, but not RF (and not hams). I sent him a long email
discussing radios, modulations, half/full-duplex, FEC, etc issues, along
with a very basic, what frequency? information.
Does anyone know of a not-to-costly product that might fulfill this
requirement? Or another way to do it?
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