An array of active null sensors could have some way to process a 'DC' offset signal separately from the small signal of interest to get a workable signal to noise.
On Jul 11, 5:49 am, "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> wrote: > Been thinking about what you said, or the way you said it, and > observational errors I have made in the past. The phone has to be able > to resolve the difference between 'tilt' and acceleration. If you make > it 2-D by mounting it to a grocery cart, as long as there are no > wheelies, the phone will not have to resolve that difference - it will > work. If the sensors were located at the ends of the phone, with pure > acceleration both vectors swing together: magnitude, direction... > everything. If there is tilting going on there will be a difference > during the motion that initiates tilt. That feels like one of those > interpolation things where you want to operate on the difference > before you digitize the information from each sensor. > > When you look at the cost to implement an accelerometer array and the > scale of the mobile phone market and the cost (battery and other) of > GPS and the ability to calibrate out differences in sensor position > due to manufacturing tolerances (and thermal expansion?), it should be > have a place. I just don't know if anyone is doing it. > > The steps are Micro Machine expertise with an eye toward making > elements that provide good linearity over the entire range of interest > (cascaded sensors?) and difference signal ports so that they can array > well to resolve the difference between rigid body tilt and > acceleration. This looks like 3+ years to me, unless someone has all > the pieces or recognized the market long ago and is already working on > it. > > On Jul 11, 3:19 am, whitemice <[EMAIL PROTECTED]> wrote: > > > > > Sounds great, I cant wait to see it in action. > > > Clearly GPS and Cell ID aren't enough for many *ideal* applications, > > and it will be fascinating to see what's possible when APIs to mix > > these all together become available.- Hide quoted text - > > - Show quoted text - --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Discuss" group. To post to this group, send email to firstname.lastname@example.org To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-discuss?hl=en -~----------~----~----~----~------~----~------~--~---