Alan B. Pearce skrev:
>> How might one measure the near instantaneous speed of a ski ?
>> A little paddle wheel at the side of the ski would be smashed
>> in a matter of minutes if not seconds.
>> Some kind of backward doppler ?
>>
>>     =

>>> Doing that would sound like an ideal application for a MEMS
>>> accelerometer with a radio link.
>>>       =

>
> Well I am envisaging that one would have some sort of bluetooth/wifi link=
 so
> you would be able to measure acceleration from a standing start. With a 2
> axis unit you could also measure up/down motion as a means of getting a
> reference. Having acc info should allow you to calculate the speed.
>
>   =


I=B4m not really after measuring the speed. I only want to compare a few =

skis just before a contest. I=B4m not myself into skiing (programming is =

fine for me) but from what I=B4ve heard it can be very difficult to =

determine which of the skies has the best glide. If the skier always =

starts to go down a hill at the exact same point with every pair of =

skies, I guess timing every pair would be enough data to make the choice =

of which pair to use. And I would like to keep the system as simple as =

possible.


Best regards,
Johan
-- =

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