- From: Rees, Kevron <kevron.m.rees@intel.com>
- Date: Fri, 9 May 2014 08:57:15 -0700
- To: ALDRIC LOYER <aldric.loyer@mpsa.com>
- Cc: "public-autowebplatform@w3.org" <public-autowebplatform@w3.org>, 박종선(Justin Park) <jongseon.park@lge.com>, Paul Boyes <pb@opencar.com>
I agree with Aldric. The changes makes sense. On Fri, May 9, 2014 at 8:47 AM, ALDRIC LOYER <aldric.loyer@mpsa.com> wrote: > Hi All, > I think we should review the "DeadReckoning interface" for the following reasons : > 1/ The Steering wheel angle is actually not used in algorithms for Dead reckoning processing. > 2/ WheelTickSensor attribute should distinguish rear left wheel and rear right wheel. If there is only one attribute for both, I don't understand how can it work. > 3/ Additionally, dead reckoning algorithms also uses the reverse gear shift indication, but we already have the TransmissionMode interface for that. > 4/ Finally, some suppliers use a cape to compute the Dead reckoning (provided by an accelerometer) instead of the wheel ticks, and we don't know if in the future other strategies will appear. > > My overall position concerning this interface is that "dead reckoning" is an application software component and then we shouldn't predefine what data are needed for this kind of function. > The Vehicle Data API specification should only give access to a set of data that one can use to compute its own Dead Reckoning function. > > In conclusion my proposal is the following : > - Remove the DeadReckoning Interface. > - Add a WheelTickSensor interface for each wheel. Furthermore, this information can be useful for many other use cases (detect a slippery road, estimate a low tire pressure, ...) > - Add a SteeringWheelAngle Interface. Indeed, even if not needed for Dead Reckoning, Steering wheel angle can be useful for many other use cases and then we really need a specific API for that. > > I propose to address also that point on Tuesday. > For the rest every thing is okay for me. > > Thank you very much to all contributors. > > -------------------------------------------------------------------------- > Aldric LOYER > PSA Peugeot Citroën > Responsable de l'UEI COTI > (Connectivity, Telematic and Infotainment) > Direction de la Recherche et de l'Ingénierie Avancée > Tel : +33 (0) 1 57 59 81 35 (20 81 35) > Portable : +33 6 32 34 55 59
Received on Friday, 9 May 2014 15:57:43 UTC