Hi Paul Thanks a lot for replying. Actually if I break down my energy consumption, a majority of it would be in radio communication and the second would be sampling through the ADC (I am doing high sampling giving the ADC a free run at approx 17 KHz ). Is there some analysis of energy consumption by the ADC ?
I have found some papers on energy consumption because of radio communication so I can probably use that model, but I have not find any good source about energy consumption of the ADC and how it responds to sampling frequency Thanks a lot once again. I look forward to hearing from you Akankshu On Mon, Nov 16, 2009 at 10:59 AM, Paul Johnson <[email protected]> wrote: > 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 > [email protected]https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help > > -- First they ignore you, then they laugh at you, then they fight you, then you win. - Mahatma Gandhi
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