From owner-freebsd-hardware Mon Oct 6 11:33:41 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id LAA17817 for hardware-outgoing; Mon, 6 Oct 1997 11:33:41 -0700 (PDT) (envelope-from owner-freebsd-hardware) Received: from ns.mt.sri.com (SRI-56K-FR.mt.net [206.127.65.42]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id LAA17802 for ; Mon, 6 Oct 1997 11:33:37 -0700 (PDT) (envelope-from nate@rocky.mt.sri.com) Received: from rocky.mt.sri.com (rocky.mt.sri.com [206.127.76.100]) by ns.mt.sri.com (8.8.7/8.8.7) with ESMTP id MAA15222; Mon, 6 Oct 1997 12:33:07 -0600 (MDT) Received: (from nate@localhost) by rocky.mt.sri.com (8.7.5/8.7.3) id MAA01027; Mon, 6 Oct 1997 12:33:07 -0600 (MDT) Date: Mon, 6 Oct 1997 12:33:07 -0600 (MDT) Message-Id: <199710061833.MAA01027@rocky.mt.sri.com> From: Nate Williams MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit To: Mike Smith Cc: cliff ainsworth III , freebsd-hardware@freebsd.org Subject: Re: project truck.....ideas wanted In-Reply-To: <199710061701.CAA02693@word.smith.net.au> References: <3.0.3.32.19971005203340.006a12ec@mail.internexus.net> <199710061701.CAA02693@word.smith.net.au> X-Mailer: VM 6.29 under 19.15 XEmacs Lucid Sender: owner-freebsd-hardware@freebsd.org X-Loop: FreeBSD.org Precedence: bulk > Just off the top of my head, you'll probably be interested in: > > - inlet air temperature and pressure > - exhaust temperature, pressure and oxygen concentration > - knocking > - timing advance & dwell > - throttle position > - engine RPM > - fuel pressure & flow rate > - oil pressure, temperature (engine, transmission, maybe diff) > - tailshaft RPM (wheel speed) > - ground speed (fifth wheel, ground doppler, other techniques?) > - coolant temperature, pressure > - outside air temperature > - inertials (2D or 3D accelerometer) Barometric pressure, moisture (as long as we're dreaming ;) > GPS might be useful depending on the length of the run; I suspect that > its basic accuracy won't be good enough to give you useful figures. Actually, GPS is *very* accurate. If you really want to do GPS, setup a stationary unit, and use the data collected from it. You can get better than 1-meter accuracy that way (differential GPS.) > Watch out for fifth-wheel speed recorders; they have a tendancy to > disintegrate under severe conditions. Not only that, they tend to slow you down. :) Nate