Posted on 08/20/2019 5:06:33 PM PDT by BenLurkin
This could help set up an underwater Internet of Things, according to MIT, which would allow for real-time sea temperature and marine life monitoring, without requiring regular equipment and power swaps to make it work. Without that requirement, it would even be possible to set up networks of underwater sensors in the seas of distant planets.
The system, devised by MIT researchers, uses a transmitter that sends out sound waves underwater, which then hit sensors with embedded receivers, transmitting a tiny amount of energy in the process. The sensor then either uses that energy to answer back — or doesn’t, which corresponds to either a 1 or a 0, meaning it can effectively communicate in binary. The only energy required for this to work is the power stored in the sound wave sent by the transmitter.
Essentially, the system works by allowing piezoelectric resonators, which have been used in things like microphones for well over 100 years, to either deform in response to a sound wave, or retain their shape and reflect, based on information contained in any kind of sensor you might want to pair with the piezoelectric material. That sends back the binary signal, which can then be collected and interpreted.
(Excerpt) Read more at techcrunch.com ...
How about using the Salt Water to create Voltage ?
I think it would require sacrificial elements that would degrade over a short time? The salt would be supplying an electrolyte though.
There really needs to be much more work concerning piezoelectricity.
A sacrificial anode big enough would make sure it’s powered for some time,though.
CC
MIT has it’s head up it’s collective ass if they think this is a new concept.
MWD - Measurement While Drilling - is in use in every oil patch in the world and has been for years and uses sensors at the drill bit far underground and sends the data via pulsations in the watery “mud” mixture that fills the hole and removes the drilled material.
From https://www.rigzone.com/training/insight.asp?insight_id=296&c_id=
“MWD uses gyroscopes, magnetometers and accelerometers to determine borehole inclination and azimuth during the actual drilling. The data is then transmitted to the surface through pulses through the mud column (mud pulse) and electromagnetic telemetry. Decoded at the surface, the data can also be transmitted to an offsite location immediately. “
Absolutely agree, but they also mention the possibility of using these on other planets. This might be an issue concerning the sacrificial element + electrolyte combination?
The salt water electrolyte idea is good though. I think this is what Tesla was up to with his tower project.
Fantastic! Thanks for sharing that. It is obviously another sales pitch for funding.
Ok, I was just thinking about the Galvanization that occurs in Boats.
If anybody knows I’ll bet the USN does.
The salt water electrolyte idea is good though. I think this is what Tesla was up to with his tower project.
““MWD uses gyroscopes, magnetometers and accelerometers to determine borehole inclination and azimuth during the actual drilling. The data is then transmitted to the surface through pulses through the mud column (mud pulse) and electromagnetic telemetry. Decoded at the surface, the data can also be transmitted to an offsite location immediately. “”
Friggen BRILLIANT. People have NO CLUE what’s going on in so many areas. In oil, most people are probably still thinking Beverly Hillbillies.
Boaters put this zinc or is it copper piece on the transom of their boats to ward of something something - I think barnacles?
Hey it worked on Gilligans Island!
Well there We go, Problem solved!!!
Yes ! I had a case of Brainfade.
https://duckduckgo.com/?q=cathode+anodizing+blocks+for+boats&t=iphone&ia=web
From Wikipedia: "Downhole electrical and mechanical power is provided by downhole turbine systems, which use the energy of the “mud” flow, battery units (lithium), or a combination of both."
MIT's development uses the pulses from above to power the sensor, like your car transmitting radio waves to both communicate with and power with the key's transponder ship or contactless credit card.
How come the ocean can’t sleep?
Old answer:
Because it has rocks in its bed.
New Answer:
MIT.
“turbines”. That makes sense. That’s what I thought this MIT thing would be (sort of) - using the current and/or wave motion to generate enough electricity for data transmission.
That covers data TRANSMISSION...not simultaneously powering the electronics. In MWD there is plenty of energy available at the drill point that can be tapped to power electronics. In a remote ocean sensor....not so much.
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