Re: Integrating with a car's CPU

ManicQin  <ManicQin@[EMAIL PROTECTED]
> wrote:
>Ok, I'm a bit familiar with the fuel dispensing technologies and as
>far as I know,
>In AVI devices the fuel tank ring reads the
>odometer and transmits it to the system (via Wi-Fi or RFID).
>If I'm not mistaken AVI devices could be integrate in almost any model
>of car...
>So from where do they receive the odometer information?

Probably from the computer that controls the instruments, which usually
gets
a pulse from transmission which it derives speed and distance from.

Many of the newer cars have data busses rather than individual lines going
from one black box to another.  This means you can add a device to the
data
buss and extract data from all the different computers throughout the
vehicle.
--scott
-- 
"C'est un Nagra.  C'est suisse, et tres, tres precis."