On 28 Sep 2016 at 3:23, brucedp5 via EV wrote: > (Video) Another Tesla Model S crash brings innocent driver,
Brings innocent driver WHAT? The headline makes no sense, even when you read the story. Bloody illiterate "journalists." Didactic rant over. Now on to my main point. "In every situation where we have received a customer claim about this, the vehicle´s diagnostic logs have confirmed that the acceleration was the result of the driver pressing the accelerator pedal," commented Tesla .. Does anyone here know the details of how Tesla's logging system reads the accelerator position? I'm not saying there IS a bug, just speculating here -- but in a generic sense, which could apply to any fly-by-wire vehicle, suppose there's a bug in the hardware or software that tells the controller how far the accelerator is depressed. I know there are fail-safes; for example most or all cars have multiple TPSes and they all have to agree before the computer acts. But as they told us in computer science class, it's impossible to prove correct any program more than one page long. I can see it happening in any fly-by-wire car, not just a Tesla. If such a bug tells the vehicle computer that the accelerator is full on when it isn't, AND the monitoring system uses that same interface, wouldn't it also tell the monitoring system that the pedal was full on when it isn't? Do we know that all these manufacturers using fly-by-wire accelerators, including Tesla, have totally separate sensors and totally separate software and processors monitoring accelerator position and all the rest -- just for record-keeping and/or reporting via mobile data connection? Or do they rely on the same software that's sending go/stop/turn signals to the controller? David Roden - Akron, Ohio, USA EVDL Administrator = = = = = = = = = = = = = = = = = = = = = = = = = = = = = EVDL Information: http://www.evdl.org/help/ = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Note: mail sent to "evpost" and "etpost" addresses will not reach me. To send a private message, please obtain my email address from the webpage http://www.evdl.org/help/ . = = = = = = = = = = = = = = = = = = = = = = = = = = = = = _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
