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From: Rune Allnor on 20 May 2010 13:13
On 20 Mai, 19:02, "arvkr" <krarvind(a)n_o_s_p_a_m.gmail.com> wrote:
> >Rune Allnor wrote:
> >> On 19 Mai, 22:44, "arvkr" <krarvind(a)n_o_s_p_a_m.gmail.com> wrote:
> >>> Hello All,
> >>> Looking for some advice on how to detect if a vehicle is backing up
> >>> (reversing) using measurements from a 3 axis accelerometer and compass.
> I
> >>> also have accurate measurements of velocity from a wheel speed sensor.
> >>> Cheers
> >>> arvkr
>
> >> You only need the wheel speed detector. Look at the sign of the speed:
> >> Positive speed is forward; negative speed is reverse. Or vice versa.
>
> >Assuming that the wheel speed is signed, and not just a pulse train.
>
> Unfortunately its just a pulse train. Can't use optical or other sensors.
> Acceleromter and Compass data is all i have apart from the pulse train
> wheel speed sensor output.

Homework? Assignment designed to test ingenuity and
problem-solving abilities?

Rune
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