Akankshu,
To the best of my knowledge there is no sure-fire way of determining how
much residual energy the batteries contain. I believe the MicaZ has the
ability to take ADC measurements on the battery voltage itself (using
some regulated voltage as a reference). However, this won't exactly
correlate with energy reserves of the battery as most batteries supply a
constant voltage until they are very near the end of their reserves.
Most likely the best you can do is look at the datasheets of each of the
components, determine how much energy they use while on or in any other
mode(varying sleep modes for microprocessor, etc) you use them in, and
try to keep a running tally of your guess as to how much energy that
mote has used. Using this internal tally you can make decisions based
upon energy usage.
With hardware diagnostic tools (Ammeter, etc) you can measure how much
current the motes are drawing, and by integrating the current you can
get the energy consumed. However, any low power devices are probably
not going to have this functionality built-in(the micaz included).
-Paul
Akankshu Dhawan wrote:
Hi All
I want to know what is the best way to get the residual battery
(energy) on the MICAZ motes ? I need to calculate this intermittently
and based on the value make some decisions so I really need this. I
would appreciate if someone who has worked on similar issues can guide
me with this
Thanks
Akankshu Dhawan
--
First they ignore you, then they laugh at you, then they fight you,
then you win.
- Mahatma Gandhi
------------------------------------------------------------------------
_______________________________________________
Tinyos-help mailing list
[email protected]
https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
_______________________________________________
Tinyos-help mailing list
[email protected]
https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
