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Advanced metering as it used to be

March 2009

These days advanced metering is easy: even if your utility isn't freely offering the service, you can buy great kits off the shelf. But it wasn't always this way!

I've just stumbled across photos of the hack that was necessary in 2008. I no longer have any idea how it worked, except that it involved an arduino and required my laptop to be on continuously for three months...

 
The easiest way to collect electrical loads in 2008.

Easier to comprehend perhaps, are some of the patterns in the data. For example, the oven can clearly be identified from its signature in the power spectrum. Based on this signature I disaggregated the oven's load and calculated that it accounted for about 5% of the whole-house load.
Attached below are the data I painstaking collected in the form of (datetime, wattage) tuples. Use freely but please let me know if you find anything interesting! Also attached is my tentative analysis.
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amiData.txt.bz2
(1473k)
Joe Kwiatkowski,
Oct 27, 2012, 6:26 PM
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Joe Kwiatkowski,
Oct 27, 2012, 6:26 PM