From: Stu W. <st...@bl...> - 2007-07-25 04:40:36
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I got to thinking about this with a friend of mine one night some time ago... the ideal solution we came up with would be to use a series of high gain antennas and a long range RFID tags, then triangulate where each person is in the house :-) If a small enough super capacitor could be charged via energy converted from RF to emit a pulse signal once every 10 seconds or so, the whole thing could run without batteries and even be made sub dermal. Of coruse, the "idea" phase is always easier than the physics and engineering phases, you'd have to hope your arm didn't blow up when you drove past a radio station... and I can't see a very high "spousal approval" factor on this one. Stu David H. Lynch Jr. wrote: > One of the most significant issues with Home automation is > being able to think creatively about your problem. > > There are infinite numbers of solutions to the Am I at home problem, > ranging from manually clicking it at your web site to detecting door > openings/closings > through Wifi/rfid/bluetooth tracking throughout your building. > > Often some creative thinking can result in simple cheap sometimes > unusual solutions. > > > > > marcantonio wrote: > >> Hi, >> >> one of the first things that came to my mind when first deploying my >> starter kit was, I need mh to know whether I am at home or not. >> >> As I am wildly flexible in my office hours and living alone, there is no >> reliable time scheme that could ever work alone; I definitely need to >> combine time information with different inputs (is it dark? is there a >> person moving in the house? and so on). >> >> I am curious about how you implemented these features. >> >> I thought about creating a global variable (e.g., $at_home) that I can >> set based on several different conditions. (Right now, I am thinking >> that I am not sure about how I create a variable that's global). >> >> Motion sensors can be a good solution. However, spreading sensors in all >> rooms seems expensive and overkill; and of course, what if you're >> reading a good book while staying almost still on your sofa? >> >> So I thought about binding to a main door event (a door sensor). But >> there's no discernable difference between the main door opening because >> I am getting IN the house or OUT of it. >> >> Of course I could use a "macro" key on my remote to tell mh that I'm >> entering the house or going out. But this would not be automatic, and I >> tend to forget everything, so I would constantly forget to activate it. >> >> I know, I know - I'm lazy. :) >> >> Marcantonio >> >> >> >> ------------------------------------------------------------------------- >> This SF.net email is sponsored by: Splunk Inc. >> Still grepping through log files to find problems? Stop. >> Now Search log events and configuration files using AJAX and a browser. >> Download your FREE copy of Splunk now >> http://get.splunk.com/ >> ________________________________________________________ >> To unsubscribe from this list, go to: http://sourceforge.net/mail/?group_id=1365 >> >> >> > > > |