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Message
will we ever have true wireless charging
Posted on 12/7/16 at 10:41 pm
Posted on 12/7/16 at 10:41 pm
Not setting my phone on a dock, but actual wireless charging Like wifi brings interent, a router brings power?
4
Posted on 12/7/16 at 11:02 pm to LSU6262
It already exists. There are batteries that run off a directed rf beam in a room.
Posted on 12/7/16 at 11:03 pm to ILikeLSUToo
quote:
It already is a thing
That is awesome. I love the future
Posted on 12/7/16 at 11:27 pm to LSU6262
Very much To Be Determined.
A lot of people question whether Energous ($WATT) can make good on their promise to deliver enough power to charge a phone over a 15 foot distance without putting so much radiation in the environment so as to interfere with various things including human cellular integrity. So far they're claiming to ship a solution in the next quarter (it's always next quarter) that provides contact charging, with the longer distance solutions coming next year (it's always next year).
Apple has hired a couple of guys from a company that was exploring ultrasonic wireless charging, uBeam.
A lot of people question whether Energous ($WATT) can make good on their promise to deliver enough power to charge a phone over a 15 foot distance without putting so much radiation in the environment so as to interfere with various things including human cellular integrity. So far they're claiming to ship a solution in the next quarter (it's always next quarter) that provides contact charging, with the longer distance solutions coming next year (it's always next year).
Apple has hired a couple of guys from a company that was exploring ultrasonic wireless charging, uBeam.
Posted on 12/7/16 at 11:35 pm to LSU6262
[quoteThat is awesome. I love the future[/quote]
Well, technically, it's the past. Wireless transmission of power is exactly what Tessa was trying to achieve when he developed radio transmission. He decided it was too inefficient. Marconi used his discoveries to develop voice transmission via radio frequencies.
Personally, I don't see it happening for several reasons, not the least of which is potential harm to living cells.
Well, technically, it's the past. Wireless transmission of power is exactly what Tessa was trying to achieve when he developed radio transmission. He decided it was too inefficient. Marconi used his discoveries to develop voice transmission via radio frequencies.
Personally, I don't see it happening for several reasons, not the least of which is potential harm to living cells.
Posted on 12/8/16 at 7:34 am to mdomingue
quote:
He decided it was too inefficient.
It is much less efficient than directly plugging in or even close proximity inductive charging. And too inefficient for a central power station in a city to wirelessly power the city. But it works in the prototypes that power phones and batteries in a room.
quote:
Personally, I don't see it happening for several reasons, not the least of which is potential harm to living cells.
Cota passes FCC safety tests
This post was edited on 12/8/16 at 7:35 am
Posted on 12/8/16 at 7:57 am to ILikeLSUToo
quote:
already is a thing.
How much cancer will that thing give me?
Posted on 12/8/16 at 8:33 am to Breesus
quote:
How much cancer will that thing give me?
My first thought as well. Not sure I wanna be sitting in a house that is transmitting wireless charging. That sounds... not good in long term exposure.
Posted on 12/8/16 at 8:34 am to LSU6262
Yeah, I think a better solution than adding more devices to put invisible signals into the already crowded air waves is to try and make better use of the juice we're already putting out there. Why can't your devices be solar powered?
LINK
quote:
Back in August 2014, researchers at Michigan State University created a fully transparent solar concentrator, which could turn any window or sheet of glass (like your smartphone’s screen) into a photovoltaic solar cell. Unlike other “transparent” solar cells that we’ve reported on in the past, this one really is transparent, as you can see in the photos throughout this story. According to Richard Lunt, who led the research at the time, the team was confident the transparent solar panels can be efficiently deployed in a wide range of settings, from “tall buildings with lots of windows or any kind of mobile device that demands high aesthetic quality like a phone or e-reader.”
Now Ubiquitous Energy, an MIT startup we first reported on in 2013, is getting closer to bringing its transparent solar panels to market. Lunt cofounded the company and remains assistant professor of chemical engineering and materials science at Michigan State University. Essentially, what they’re doing is instead of shrinking the components, they’re changing the way the cell absorbs light. The cell selectively harvests the part of the solar spectrum we can’t see with our eye, while letting regular visible light pass through.
LINK
Posted on 12/8/16 at 9:00 am to DoubleDown
quote:
My first thought as well. Not sure I wanna be sitting in a house that is transmitting wireless charging. That sounds... not good in long term exposure.
It isn't bathing the house in power. It only directs focused power to the device if it has clear line of sight, for example not going through humans, checked a hundred or more times per second.
Posted on 12/8/16 at 9:35 am to TigerinATL
Transparent/translucent solar glass panels are definitely cool technology. They could make devices or buildings much more efficient but probably can't independently power either. Hopefully the production becomes cost efficient enough to implement on a large enough scale to really reduce our energy needs.
Posted on 12/8/16 at 9:37 am to lagallifrey
quote:
It isn't bathing the house in power. It only directs focused power to the device if it has clear line of sight, for example not going through humans, checked a hundred or more times per second.
if it is going through any type of RF this isnt the case. maybe if they are using some kind of IR tech. But in transmitting power wirelessly can be dont via magnetic field, but that encompasses a volume no just a line between 2 objects This post was edited on 12/8/16 at 9:38 am
Posted on 12/8/16 at 9:43 am to CarRamrod
quote:
The Cota charger (transmitter) receives the incoming beacon signals and retro-directively sends power back via the same Wi-Fi 2.45GHz spectrum precisely along the paths of the incoming beacon signals; this return signal avoids obstructions such as people, limiting RF radiation absorption and enhancing safety.
Posted on 12/8/16 at 9:48 am to lagallifrey
quote:i hjave said this a ton, the major jump needs to be in energy storage(batteries). If carbon nanotube batteries could be developed, i have read physicists (the grey hair guy always on the discovery channel) said a nanotube battery the size of a AA could power an average home fore like a week or something. Which is incredible. Combine that with how cheap renewable energy is in certian areas of the US via wind, hydro electric; energy could be harnessed there and brought to other places.
Transparent/translucent solar glass panels are definitely cool technology. They could make devices or buildings much more efficient but probably can't independently power either. Hopefully the production becomes cost efficient enough to implement on a large enough scale to really reduce our energy needs.
Posted on 12/8/16 at 9:51 am to lagallifrey
quote:All that sounds like mumbojumbo.
limiting
I take all of that as saying, The beacon receives signals fomr a certain direction, and send power back out to that direction. They arent saying that they power is spaned over a 30 degree area hitting everything in its path. It only aviods humans that are not in that 30 degree cone. well when you are holding that device you are in direct shot of that wave.
Posted on 12/8/16 at 10:10 am to CarRamrod
quote:
They arent saying that they power is spaned over a 30 degree area hitting everything in its path.
True, they aren't saying that. If true that isn't consistent with their claims. Did you just make up that number or have you seen more detailed technical specifications?
quote:
the RF is focused precisely on the shape of the receiving antenna with submillimeter accuracy.
This post was edited on 12/8/16 at 10:20 am
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