Sending a signal long distance without internet?
Sending a signal long distance without internet?
(OP)
Hi all,
I have various stress gauges mounted in a stationary unit and we are trying to design a monitoring system for these gauges. Is there a way to have these units send data over a couple hundred miles without the use of internet? My first thought was radio waves but we would need an awfully large antenna to receive the signal. The reason that I don't want to use internet is because we would have to charge a monthly monitoring fee to cover the network data plan, and this would make the product far too expensive. Plus, I can't think of an easy way to have these units tap into the owner's existing internet connection. Ideally what we want is to sell these units, and then be able to replace them if we receive an alarm signal from the unit after too much stress has been achieved. What I'm asking for may be impossible, but I'm just looking for suggestions on possibilities to solve this issue.
Thanks,
Jeff
I have various stress gauges mounted in a stationary unit and we are trying to design a monitoring system for these gauges. Is there a way to have these units send data over a couple hundred miles without the use of internet? My first thought was radio waves but we would need an awfully large antenna to receive the signal. The reason that I don't want to use internet is because we would have to charge a monthly monitoring fee to cover the network data plan, and this would make the product far too expensive. Plus, I can't think of an easy way to have these units tap into the owner's existing internet connection. Ideally what we want is to sell these units, and then be able to replace them if we receive an alarm signal from the unit after too much stress has been achieved. What I'm asking for may be impossible, but I'm just looking for suggestions on possibilities to solve this issue.
Thanks,
Jeff
Talk To Other Members
RE: Sending a signal long distance without internet?
Wireless over a 100 miles would require a low frequency (i.e HF), and therefore a very slow data rate and higher power requireemnt.
RE: Sending a signal long distance without internet?
It would be crazy to install a point-to-point radio link if there's already existing Internet connections at each end.
If it's just for an alarm condition, then perhaps a telephone dialer (connected to an existing telephone line) is all that's required. These are used in bugler and fire alarms systems, and could be applied to any alarm condition.
RE: Sending a signal long distance without internet?
You could have the various sensors at one location talk to each other on and ISM band, and a central transmitter pointed at the sky report that location's information.
www.MaguffinMicrowave.com
Maguffin Microwave wireless design consulting
RE: Sending a signal long distance without internet?
TTFN
FAQ731-376: Eng-Tips.com Forum Policies
RE: Sending a signal long distance without internet?
The companies providing this solution have agreements with the providers (ATT, Verizone, etc) to use sidebands that are reserved for this purpose. Rates are very inexpensive. Aither-M2M in Atlanta is a good resource.
Good on ya,
Goober Dave
Haven't see the forum policies? Do so now: Forum Policies