[Hidden-tech] wireless networking in machine shops

[Tom Kopec]

Mr. Heller is dead on.

Unfortunately, the client may have been sold on wireless and now the job 
is making it all work :(

I do a fair amount of work with a large local manufacturer.. dealing 
with RF/power/ground/comms/noise issues.  I'd be glad to talk through 
what you're faced with for the price of breakfast. I'll NDA if needed.

My experience is that the "obvious" problem is rarely the problem.

...tom


On 7/1/2016 4:13 PM, Robert Heller 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 _/\_
>>
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