> My opinion is that wireless will never replace entirely the wired
> industrial applications.
> Even the OFDM seems to be the right solution for noisy environements,
> don't forget in industry is room for any kind of personell not only
> (smart) engineers. A wireless transducer communication problem is much
> difficult to be solved. The technician must have expensive tools for
> solving minor communication problems which behaviour have nonsense for
> a person without a small experience in RF (propagation, atenuation
> measurements, modulations etc).
> 
> Imagine just a place where a welding machine is running continuously.
> Tesla lovers knows what that means as RF spectrum. Any Zigbee will be
> unuseable there. Even OFDM will probably cough.


Try running comms thru an aluminium smelter sometime.  Wire didn't fare too
well, fibre optic did.

Tony

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