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Guru

Join Date: Sep 2016
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Field Monitoring And Control By GSM

09/19/2016 11:10 PM

Hi, do you have any experience configuring a system of network monitoring and controlling field devices from 10~100km away via GSM protocol?

What product on the market can you advise to be indeed reliable and useful on this?

Hope you could enlighten me, thank you.

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Guru

Join Date: Mar 2007
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#1

Re: Field monitoring and Control by GSM

09/20/2016 12:02 AM
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Guru

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#3
In reply to #1

Re: Field monitoring and Control by GSM

09/20/2016 1:30 AM

Thank you. No infidelity planned. I am planning to design for a flood response monitoring on rivers. If it's possible to transmit analog 0-100% water level signal simultaneously via gsm or to other communication protocols that suits the purpose.

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Join Date: Apr 2008
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#4
In reply to #3

Re: Field monitoring and Control by GSM

09/20/2016 11:24 AM

Ethernet is likely to be more widely available. If you can use that, you can pull data from a remote machine in a digitized format. So yes, you could read analog values in any scale you wish to use.

Are you looking to create a Human-Machine Interface (HMI)?

Do you need your system to be able to send E-mails?

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#9
In reply to #3

Re: Field monitoring and Control by GSM

09/20/2016 4:34 PM

this: is a Wit coupling. What do you get if you saw one of these in half?

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Guru

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#10
In reply to #9

Re: Field monitoring and Control by GSM

09/20/2016 8:26 PM

A Trump supporter, of course.

Now, you asked for that one.

This same answer applies to your other post too.

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#11
In reply to #10

Re: Field monitoring and Control by GSM

09/21/2016 9:54 AM

Wrong answer, Gila Monster breath!

If I saw one Wit in half, I get two half-wits.

(That would be you and me arguing over who should be our next POTUS, when neither one them is worth a potter's damn.) The Libertarian has already proven he knows next to nothing, so no soup for him either. The Green Party candidate is a minor clone of HRC.

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#12
In reply to #11

Re: Field monitoring and Control by GSM

09/21/2016 10:00 AM

How did we EVER get ourselves into such a mess??

Just like quicksand, we all got complacent after WWII and didn't feel ourselves sinking into the quagmire until it was/is too late to get out easily.

I will always believe that the angry Dorito will sink the country in over our heads.

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#13
In reply to #12

Re: Field monitoring and Control by GSM

09/21/2016 10:41 AM

We always heard this: "two things you don't really want to know how they are made: laws and sausages."

Another related to politics: "Two methods for boiling a frog, one is far messier, and requires restraining the victim."

All of our current problems (runaway debt, social programs that are neither social nor helpful to the "victims", legislation coming from the judiciary branch of the goobermint, and the ever popular quibbling about which terrorist should be tried as an enemy combatant, and which should be tried as a common criminal) can be traced back to many decades of being on a gradual slope away from founders intent.

RTFM applies here, and should be required reading (and passing a test) before being admitted to the political arena. Not that it would stop most of them from being what they are anyway.

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#14
In reply to #13

Re: Field monitoring and Control by GSM

09/21/2016 10:52 AM

Term and campaign spending limits would go a long way toward getting us back to normal. Oh, and selling elections to corporate interests with deeper pockets than ordinary voters. Thanks a LOT for that, SCOTUS!!!!

Sadly, it's all about money.

But then, who'd want to be in politics if it wasn't?

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#15
In reply to #14

Re: Field monitoring and Control by GSM

09/21/2016 11:13 AM

Money, power, and all the hot chicks?

Oh well, guess I will have to stick with the hot chicks.

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Guru

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#17
In reply to #15

Re: Field monitoring and Control by GSM

09/21/2016 1:21 PM

Hot chicks!!!!!!!!?!!!!!!!!!!!!

You must hang out at TTU a lot.

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#18
In reply to #17

Re: Field monitoring and Control by GSM

09/21/2016 1:29 PM

Chick-Fil-A just off campus, and Raisin's Cain's on University Ave. That is where the hottest chicks are.

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#16
In reply to #11

Re: Field monitoring and Control by GSM

09/21/2016 11:45 AM

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#2

Re: Field monitoring and Control by GSM

09/20/2016 12:23 AM

If it is at all critical, FORGET IT!

I have cell modems monitoring (control is possible, but never used) remote sites. There have been outages of 2-3 days at times. That is on a site that is "critical infrastructure". If there were ANY other way I could talk to the site, I WOULD. When the communications fail, we have to have people stationed at the site(s) 24/7, until the problem is fixed.

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Guru

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#5

Re: Field Monitoring And Control By GSM

09/20/2016 1:07 PM

Well for emergency dependability you need an autonomous system with it's own power source and hardened redundant infrastructure....I would study different systems that have been installed and are in use today....This may serve to illuminate unforeseen problems that you may encounter....

http://rdo.psu.ac.th/sjstweb/journal/33-2/0125-3395-33-2-227-235.pdf

Check the list of references at the end of the above link....a lot of study has been done in this area...

https://lirias.kuleuven.be/bitstream/123456789/316300/1/current.pdf

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#6

Re: Field Monitoring And Control By GSM

09/20/2016 3:57 PM

Forget GSM for a reliable 100% up system of that range! Just forget it.

Digitize the level signal, and transmit using fiber optic cable, OR use telephone wire, with repeater stations to boost signal every 10 km or so. That would be much better, until some moron steals all your copper. At least with the fiber optic, you could bury and hide it.

If too expensive: Hire two locals per km, and use strings and cans to create land line.

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#7
In reply to #6

Re: Field Monitoring And Control By GSM

09/20/2016 4:08 PM

AKA.. the Hillbilly Hand Fishing Network(HHFN)...

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#8
In reply to #7

Re: Field Monitoring And Control By GSM

09/20/2016 4:19 PM

Now, THAT is a hog!!! Wow, where is that hole? Smart to use a Hillbilly for bait - it's the moonshine smell, don't you know?

The tin can network would be more of a linear series with repeater stations every so often.

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