[Hidden-tech] wireless networking in machine shops

[Robert Heller]

At Fri, 1 Jul 2016 12:39:11 -0400 Spike McLarty <spike.mclarty at gmail.com> wrote:

> 
> 
> 
> Anybody on the list who's worked with WiFi (or any other wireless digital
> networking) in a hostile environment?  By 'hostile' I just mean a factory
> or machine shop with lots of intermittent, bursty RFI from unknown sources.
> Not, like, bad guys with jammers ;-)
> 
> I'm imagining somebody who actually understands WireShark filters and has
> used a radio-spectrum analyzer.
> 
> I work at machinemetrics.com - we do production equipment monitoring and
> analytics, and we've gotten outside our zone of expertise trying to do WiFi
> at some customer machine shops where the WiFi part of the spectrum is
> really messy.

Question: Is *wireless* a requirement or just a convience? My understanding of
machine tools is that they are not something that are moved -- they tend to be
bolted to the floor (or are just so heavy they might as well be). The *easy*
solution would be to just run Cat 5e or Cat 6 cables (in armored conduit!).  
Even if the machines themselves are not networked, having a RJ45 jack or two 
handy by each machine or work area and then jacking in laptops with 
Ethernet patch cables might be a workable solution.

Big electric motors, especially DC (and AC/DC) ones, give off all sorts of RF
'noise'. Fixed speed AC ones are not as bad, but can also be noisy.

> 
> -spike _/\_
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