Consultants say interference in vehicle electronics is possible
in [Technical]
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From: chuckcar on 24 Mar 2010 17:28 "larry moe 'n curly" <larrymoencurly(a)my-deja.com> wrote in news:f0320685-3ee1-4758-bd05-ec82d7ea7d4c(a)v20g2000prc.googlegroups.com: > > > C. E. White wrote: >> >> One word of caution - these experts are woking for the Center for >> Auto Safety, a trial lawyer funded group run by Clarence Ditlow and >> Jane Claybrook. They still want Audi to recal 1985 Audi 5000's. > > Ironically, Audi ran magazine ads in the 1980s that discussed adapting > Audis to America. In one ad they said the corrosion protection had to > be improved to handle the salt we poured on the roads in the winter, > and in another ad they said RF interference was a lot worse here than > in Europe. CB radio and other spectrum unregulation no doubt. -- (setq (chuck nil) car(chuck) )
From: chuckcar on 24 Mar 2010 17:28 "hls" <hls(a)nospam.nix> wrote in news:lOidnXyWTv70ozfWnZ2dnUVZ_vqdnZ2d(a)giganews.com: > > "C. E. White" <cewhite3remove(a)mindspring.com> wrote in message >> >> "Thirty years' empirical evidence overwhelmingly points to (sudden >> acceleration) being caused by electronic system faults undetectable >> by inspection or testing," said Keith Armstrong, a engineering >> consultant from the United Kingdom who appeared with two other >> engineers at a Washington news conference organized here by consumer >> advocates. >> >> Armstrong, who said he was interviewed last month by U.S. National >> Highway Traffic Safety Administration investigators, said the problem >> with electronic interference is industrywide. "EMI is endemic in >> electronics," he said. EMI is electrical disturbances in the >> circuits. >> >> Real-life EMI >> >> Tests by Toyota and other automakers don't cover most real-life EMI, >> nor do they simulate typical faults to verify that backup measures >> work, Armstrong said. >> > > Airplanes have seen the same sort of interference from cell phones, > but it doesnt seem to be very repeatable and is normally fleeting with > no residual results. > > Cell phones have a voltage spike just as the call is being connected. There was a Mythbusters episode that showed that. BTW if there's anyone wondering, I am the same poster as fred. I created several nicks to avoid a stalking troll. It didn't work in the long term. Thanatoid probably knows what I'm talking about as he's dealt with the twit as well. -- (setq (chuck nil) car(chuck) )
From: hls on 24 Mar 2010 18:35 "chuckcar" <chuck(a)nil.car> wrote in message news:Xns9D45B107A4AD5chuck(a)127.0.0.1... > "larry moe 'n curly" <larrymoencurly(a)my-deja.com> wrote in > news:f0320685-3ee1-4758-bd05-ec82d7ea7d4c(a)v20g2000prc.googlegroups.com: > >> >> >> C. E. White wrote: >>> >>> One word of caution - these experts are woking for the Center for >>> Auto Safety, a trial lawyer funded group run by Clarence Ditlow and >>> Jane Claybrook. They still want Audi to recal 1985 Audi 5000's. >> >> Ironically, Audi ran magazine ads in the 1980s that discussed adapting >> Audis to America. In one ad they said the corrosion protection had to >> be improved to handle the salt we poured on the roads in the winter, >> and in another ad they said RF interference was a lot worse here than >> in Europe. > > CB radio and other spectrum unregulation no doubt. > When you have people running more than a kilowatt on CB, driving the system into overmodulation, etc., then there is a lot of RFI. But CB is just a small thing. I believe that one of our health problems is that we are basically living in a microwave oven here.
From: Tegger on 24 Mar 2010 19:44 "Obveeus" <Obveeus(a)aol.com> wrote in news:hodfar$8fb$1(a)news.eternal-september.org: > > "hls" <hls(a)nospam.nix> wrote: > >> Airplanes have seen the same sort of interference from cell phones, >> but it doesnt seem to be very repeatable and is normally fleeting >> with no residual >> results. > > I think that internal software or electronic hardware platform errors > are far more likely that glitches due to cell phone signals, sun > spots, etc... > > I think glitches caused by the presence of free-and-easy tort are the most likely of all. -- Tegger
From: Jack Myers on 24 Mar 2010 21:21
In rec.autos.tech Don Stauffer <stauffer(a)usfamily.net> wrote: > I suspect software errors rather than interference. The auto industry > is actually fairly good in designing resistance to interference, but in > my opinion not very good on software design. > ... design of real-time software is quite difficult. ... Just love how the factory engineers and federal regulators can examine a system for a couple of hours and then call it clean. I've spent literally weeks on the integration test bench running full bore with top-notch test equipment to tease out rare failure modes, both software and firmware. The bugs relating to race conditions, cross- domain timing errors, and sensitivity to normal component tolerances are especially entertaining--NOT! -- Jack Myers / Westminster, California, USA Postfix...a computer term meaning "sendmail is too hard for me" |