So I recently have the Iotawatt and I saw on this forum a post regarding load/appliance recognition. They referred to the nilmtk toolbox and so on. I couldn’t find the thread back so I started a this new one.
My goal is to measure the main power lines (3 phase) so I get a cummulative usage and in post processing of this data to differentiate between different appliances. It doens’t need to say ‘12 LED lights’ or ‘a 1000W microwave’. The discussion on the other thread (which I can’t find anymore) made it clear that this is a hot topic and very difficult. Therefor I would already be happy if it would filter out ‘A load of 40W’ and ‘A load of 1000W’. After a while, since the appliances are limited you can see that , e.g. the category ‘load of 100W’ uses the most energy, and then you can go look into it if it is worthwhile to exchange these loads with a more energy efficient one or something.
I was wondering if anyone had any experience regarding this?
On the second hand: how can I retrieve the raw data from my Iotawatt? I looked a bit around with the file manager, but I couldn’t find anything humanly readable. Also I saw that the data is available at the graphs tab at the iotawatt localhost, in CSV format. But the CSV format only plots the data every 120s. While the graphs look like they have a far more finer resolution. In my impression emoncms gives the same data as the csv from the tables tab in the iotawatt localhost.