EPICS Controls Argonne National Laboratory

Experimental Physics and
Industrial Control System

1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  <20152016  2017  2018  2019  2020  2021  2022  2023  2024  Index 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  <20152016  2017  2018  2019  2020  2021  2022  2023  2024 
<== Date ==> <== Thread ==>

Subject: Re: Wireless devices inside the accelerator tunnel
From: Ralph Lange <[email protected]>
To: Bob Gunion <[email protected]>
Cc: EPICS Tech-Talk <[email protected]>
Date: Thu, 24 Sep 2015 13:41:54 +0200
Hi Bob,

Using radiating cable instead of classical antennas is a nice solution for the wireless connection. The access points stay outside the tunnel, and the radiating cable along the inside of the tunnel creates an equally strong WLAN connection around the ring.

Lots of suppliers, search for "radiating cable wifi".

Cheers,
~Ralph


On 22/09/2015 22:53, Bob Gunion wrote:
Hi all,
At the ALS we have a lack of adequate temperature monitoring on our magnet coils.  We would like to address this, but the cost of wiring to all the thermocouple modules, between power and serial or ethernet communications, is quite high, so we though we might try some wireless devices.  There are some on the market (see the links below) that can handle 4-16 thermocouples apiece and run on batteries, eliminating all wiring except to the thermocouples themselves.  A self-healing mesh network like Zigbee or Wireless-HART would be ideal, but we are also considering 802.11b/g-type wireless (which has the added benefit of providing laptop/tablet access inside the tunnel during shutdowns).

So, I'm soliciting advice and experience from the community: 
- Has anyone tried a solution like this in other accelerators?  
- Have any particular devices worked well, or not?  
- Have any radiation damage issues been addressed using shielding?

Here's some links to candidate devices:

Thanks,
Bob Gunion



References:
Wireless devices inside the accelerator tunnel Bob Gunion

Navigate by Date:
Prev: Motor Record monitoring of Demand Value giles.knap
Next: RE: Motor Record monitoring of Demand Value Mark Rivers
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  <20152016  2017  2018  2019  2020  2021  2022  2023  2024 
Navigate by Thread:
Prev: RE: Wireless devices inside the accelerator tunnel austen.rose
Next: Motor Record monitoring of Demand Value giles.knap
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  <20152016  2017  2018  2019  2020  2021  2022  2023  2024 
ANJ, 16 Dec 2015 Valid HTML 4.01! · Home · News · About · Base · Modules · Extensions · Distributions · Download ·
· Search · EPICS V4 · IRMIS · Talk · Bugs · Documents · Links · Licensing ·