16 Feb
2013
16 Feb
'13
4:23 a.m.
On Sat, Feb 16, 2013 at 1:45 AM, Arun Khan <knura9(a)gmail.com> wrote:
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.
http://en.m.wikipedia.org/wiki/Power_line_communication
The USB will work for sure to detect power failure but how will you
communicate to "dumb" ups from the computer? Curious.
--
Sanket
On Fri, Feb 15, 2013 at 7:57 PM, Binand Sethumadhavan
<binand(a)gmail.com>
wrote:
> 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
end.
> If there is no voltage, there is no power in the
mains and ergo - we
are in
> the middle of a power outage, so take action.
Know of something along
these
> lines?
>
> (idea is to detect power failures, while powered by a "dumb" UPS unit -
one
that cannot
communicate with the a computer. Any other
solutions/suggestions?).
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
--
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