On 16 October 2013 13:47, John Stoffel <[email protected]> wrote: > >>>>> "Gilbert" == Gilbert Wilson <[email protected]> writes: > > Gilbert> We're having some issues with temperature control in our office. > Depending > Gilbert> on the day different staff say it's too cold or too warm. There > appears to > Gilbert> be some big temperature variances across the building (it's not > just > Gilbert> personal preferences, but I'm sure that's part of it). The HVAC > people say > Gilbert> that they don't see any issues when they visit the office. With > answers > Gilbert> like that, I think they use to be sysadmins! > > Heh, we have the same problems in our office, since all the > heating/cooling vents are located at the edges by the windows. So > people under them freeze/boil, while others feel the complete > opposite. > > Gilbert> I'd like to place temperature sensors across our office and > Gilbert> trend their data via snmp. My initial thought was to get some > Gilbert> server room sensors and put them in strategic locations > Gilbert> throughout the building and move them around every few > Gilbert> weeks. But, that's a lot of work for imprecise data. If > Gilbert> possible, I'd like to have one central temperature sensor in > Gilbert> my network closet and rj45 sensor probes in as many as 50 > Gilbert> rooms via the building's wiring infrastructure. Has anyone > Gilbert> done anything like this or know of a temperature sensor setup > Gilbert> that can accommodate (or scale) to this size? Most of the > Gilbert> systems I'm familiar with only accept a few probes and don't > Gilbert> scale at all. > > If you have the time and energy go look at the Dallas One Wire system > of sensors and readers. In a past life I built a temperature logging > system using cat5 cables and serial port readers. > > Then I used the 'digitemp' software to grab the data and log the > results into an mrtg like graphs. Very nice stuff. You can go get > the software at digitemp.com but he's not selling any hardware at this > time. > > You can buy sensors and such at: > > http://www.ibuttonlink.com/collections/1-wire-products > > Personally, I just got a bunch of DS-1820 sensor modules, and wired > them up onto RJ45 plugs so I could just daisy chain them. It's at > work right now, but I'll try to send you (or anyone else) a picture > with the details of what I used. > > So it cost me time to solder it all together, but not much more. If > your time is valuable, the above site might work well, but the modules > aren't what I think of as good design. Ah... if you look at their > page you can find the T-SENSE-SD, which is very much like what I > buit. And it looks decently cheap. You could setup a network with 50 > sensors and such for under $600 or so I bet. Maybe a little bit > more. Hopefully you can use existing wiring and such. > > Good luck. > John > > _______________________________________________ > Discuss mailing list > [email protected] > https://lists.lopsa.org/cgi-bin/mailman/listinfo/discuss > This list provided by the League of Professional System Administrators > http://lopsa.org/ >
I have used the AKCP SensorProbes in a previous job: http://www.akcp.com/products/base-units/sensorProbe-Series/sensorProbe8/ The base unit only has 8 probes but apparently now you can daisy chain them together. Not sure if that will provide a central view of them all. Regards, -- Craig Ayliffe
_______________________________________________ Discuss mailing list [email protected] https://lists.lopsa.org/cgi-bin/mailman/listinfo/discuss This list provided by the League of Professional System Administrators http://lopsa.org/
