HASI - Home Analytical System Interface ======= eMetering for everyone ----------- While the need for more efficient use of energy is commonly accepted, for the individual it is often difficult to act accordingly. Firstly, there may be an information lack about the energy costs caused by a certain activity or a neglected activity, such as leaving on lights or electrical appliances in stand-by mode. So-called eMetering devices aim at filling this information gap. Mounted between a socket outlet and an electrical appliance they measure power consumption and may translate consumption values into monetary costs. However, the provision of information about energy consumption alone does not necessarily imply acting. Rather, assisting people in actually changing their behaviours is a much harder challenge. The question of how to utilize computer technology to assist people in changing behaviours, especially to get rid of bad habits, is dealt within the field of "persuasive computing". A pioneer in this field is BJ Fogg from Stanford University who postulates the statement "Put triggers in the path of motivated people" as a design mantra for behaviour change. According to Fogg's behaviour model, for a behaviour change to happen three factors must coincide: * the person must be motivated in principle, * a trigger must be present that just-in-time reminds the user to do the right thing instantly, and * he/she must be able to act. While metering devices as well as home automation hardware are available on the market there is the problem of non-interoperability of hardware components produced by different vendors. HASI is a first try at implementing a layered architecture able to communicate with various devices through their protocols. HASI was implemented during the summer term 2011 at Augsburg University of Applied Sciences. The team consists of * Miriam Berschneider, * Jennifer Meier, * Falk Alexander, * Martin Gutmair, * Thomas Hipp , * Tobias Scholze, * Christoph Biesinger and * Felix Wagner. It runs on a lightweight open source system (Linux and Python) and uses a MySQL database as a backend. It is able to run on small-scale, low energy consuming hardware (e.g. a netbook) within a user's home. Event notifications from sensors as well as power consumption measurements are logged in the database and are made accessible as a web-resource for other services. A test installation of HASI including sensors for power consumption, temperature and state indicators for windows and doors has been set-up at an apartment and run from May-July 2011. HASI is now installed in a office room at the faculty of computer science and serves as a test-bed for further development.