Last night I was wondering about the feasibility of
using a PDA as the "brains" for a vehicle engine
management system. I don't know much about the
hardware of the various Palm OS PDAs, but I do know
C(2+) and Java and that there are compilers (though
limited) for both of these languages on the Palm OS.
The question I can't answer is will a compiled C
program be fast enough with PDA hardware? Also, is
the I/O fast enough?
The PDA would have to receive signal between 1 and
9kHz (representing RPM), determine the frequency, look
up the frequency on a table correlating the input
frequency and output frequency, and output a frequency
up to .6kHz probably 15 time/sec. Simultaneously, it
would receive a voltage representing throttle
position, and look up the input frequency and throttle
position on a table correlating these with a pulse
width and frequency up to .6kHz.
There would be no need to access the display.
Power is not a problem b/c the PDA would be hardwired.
Some signal conditioning would be performed by
circuits outside the PDA.
So, feasible?
Josh
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