[Hidden-tech] wireless networking in machine shops

Kiernan Gulick-Sherrill kiernan at greenearthpc.us
Fri Jul 1 18:13:36 EDT 2016


Another totally doable option is Ethernet over Power adapters. If there is
good modern wiring in the shop these are actually really good these days.

Kiernan Gulick-Sherrill
Green Earth Computers - Computer & Smartphone Repair

20A Crafts Ave

Northampton, MA 01060

www.greenearthpc.us
413-282-8324



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On Fri, Jul 1, 2016 at 4:13 PM, Robert Heller <heller at deepsoft.com> wrote:

> 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 _/\_
> >
> > MIME-Version: 1.0
> >
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>
> --
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