Power line communications
Power line communications
(OP)
I was curious as to whether or not there was a relatively inexpensive way to convey a contact closure that could be transmitted via power lines to an autodialer a couple of miles away.
I have a municipal customer where one of their wellhouses has no autodialer to indicate when the pump motor/soft start etc has failed. There is another wellhouse in the near vicinity that has a cellular autodialer.
Most likely the power to each well is derived from poll mounted transformers and so the commonlity between stations is thru transformers.
It may be the best route would be to install another dialer at the site.
I have a municipal customer where one of their wellhouses has no autodialer to indicate when the pump motor/soft start etc has failed. There is another wellhouse in the near vicinity that has a cellular autodialer.
Most likely the power to each well is derived from poll mounted transformers and so the commonlity between stations is thru transformers.
It may be the best route would be to install another dialer at the site.





RE: Power line communications
Municipalities often use those systems with the radios links, called SCADA? One can see the UHF Yagi antennas poking out of vaults all over the place.
RE: Power line communications
No affiliation.
Benta.
RE: Power line communications
I'm interested now in kicking around on the web when I get time- seems like it would be suited more for the "LAN" setup, not not so much for leaving buildings, travel thru xformers etc.
RE: Power line communications
The modems I've seen aren't 'cheap' ($1200 for a pair), but will work wherever there's cell phone service and 24Vdc power.
RE: Power line communications
RE: Power line communications
Seems like we used a x10 years ago at a small WWTP. It turned on a light at at another building closer to the main road where police could see if the pit was overflowing as passed by on off hours.