On Sat, Feb 16, 2013 at 1:45 AM, Arun Khan <knura9(a)gmail.com> wrote:
On Fri, Feb 15, 2013 at 7:57 PM, Binand Sethumadhavan
> I am thinking of something like a mobile charger
that would plug in a
> regular 3-pin plug at one end and a computer at the other, and some
> software/sensor combo that would read the (DC) voltage at the computer
> If there is no voltage, there is no power in the
mains and ergo - we
> the middle of a power outage, so take action.
Know of something along
> (idea is to detect power failures, while powered by a "dumb" UPS unit -
communicate with the a computer. Any other
Good idea. You could use one of those AC Mains to USB
adapter/charger; which I think gives out 5V on the USB power line. A
USB cable into the computer USB port should be a good starting.
-- Arun Khan
A laptop already detects that using battery charging or not. I'm not sure
how. You can rig that power module from a laptop to make a makeshift UPS
that can do that. But I guess here you are looking at UPS for
Desktop/Servers. In which case you will need to spend a USB port. However
the standard on power grids is PLC. I remember people doing final year
engineering projects on this topic. Here is an intro article on the topic.
The USB will work for sure to detect power failure but how will you
communicate to "dumb" ups from the computer? Curious.