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Has anyone seen this - Voltserver: "Digital Electricity"

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PlainName:

--- Quote ---So you're saying you actually support this crap?
--- End quote ---

I'm saying I have a serious case of CBA and just going to watch the fun, now.

Cyberdragon:

--- Quote from: dunkemhigh on February 17, 2018, 06:26:25 am ---
--- Quote ---So you're saying you actually support this crap?
--- End quote ---

No, I am saying I have an open mind about it and looking at what they are actually doing/trying to do rather than make up strawmen to 'bust'.

For instance:


--- Quote ---use WiFi and standard power
--- End quote ---

They're not trying to shift any old user data down the interwebs. They are wanting one end of the wire to talk to the other end and discuss the wire between them. Using WiFi is just going to make it unreliable and probably unsafe. Using wifi is, frankly, a stupid thing to want to do this with. Indeed, for anyone with a clue, the actual wire connecting the two ends is the logical choice.

It seems to me that you've not grasped what they are trying to do (or, rather, what they are doing according to our mole) and instead just kneekjerking on keywords. "Data = wifi better", for instance. But go ahead. I'm just saying I think you're going to regret jumping in with both feet, the wheels and bucket of a JCB.

--- End quote ---

I see exactly what they want to do, it's all over their website! Touting 5G interlinks and crap! It's 8Kbs, you can't do much with that other than simple automation! If you want a wired connection, then use traditional PoE, that would be way faster! I don't have to be open minded about a company that also says 300V is safe to touch when I know from experience it bites like a mad dog! Of course WiFi is not secure, but most IoT crap is using it anyway so what does it matter? If your building already has wifi, they'll try to hack it anyway!

Beware of being overly open minded, you'll get sucked into the rabbit hole, just think of:

Juicero
Batteroo
Rayton Solar
Waterseer
Solar Roadways


BrianHG:

--- Quote from: NiHaoMike on February 17, 2018, 06:25:53 am ---The idea is a little bit like what I imagined as a compromise of AC and DC. Except my idea is 170V or 340V DC being pulsed at 100Hz or so with a 90% or so duty cycle and a slew rate limited to avoid EMI. The real point is to solve the arcing problem of HVDC yet be cheaper and more efficient to derive from a DC supply than AC.

--- Quote from: BrianHG on February 17, 2018, 04:16:58 am ---You can get over a megabit  down normal AC power lines with the full power intact as well.

--- End quote ---
Just one megabit? 90Mbps or more is easily done as long as there's not too many noisy devices. Telephone lines do even better though - I managed 600Mbps with some hacked Homeplug adapters over a few hundred feet of old telephone line and doesn't supply the MW such large building have already been wired for.



--- End quote ---
We are talking about superimposing on the existing power wiring in an multi floor office building or stadium or shopping mall, through all the existing infrastructure without re-wiring a thing in an affordable manner to control lighting, AC/Heat, sensors, alarm and intercom, perhaps a few more things.  It is easier to get more bandwidth in a small house, but in such large buildings, you can expect your data will need to go up and down some HV transformers along the way.  Really high bandwidth is claimed on the WiKi link I have placed a few posts back, but, we are only competing with a few joking KBaud.on cat5/6 cable, which still needs to be wired out.

NiHaoMike:
I don't see having a single collision domain for a large building as a good idea. The probably of a collision goes way up with a large number of nodes and bandwidth goes way down. The transformers attenuating the signal can be used as a feature to have separate collision domains on each segment.

ogden:

--- Quote from: Cyberdragon on February 17, 2018, 02:41:27 am ---What's shown in your pic isn't slew control.

--- End quote ---

No it's not. - In case you talk about LTspice simulation I made for you to show how stupidly wrong you are about capacitors by saying "To get continuous power with their stupid pulse system you need big capacitor banks and send a lot of energy in the short bursts for the capacitors to keep enough charge." and that's it. Even waveform chosen was worst case 0-300V PWM where just duty cycle matches to Voltserver specs. Though you will understand w/o description, but seems you did not  :palm:


--- Quote ---And now it's just added even more complicated circuits when it could all be avoided by just using DC in the first place!

--- End quote ---

So you are suggesting just to use plain >= 350VDC. RIGHT.  :palm:


--- Quote ---1Kbs! :-DD You want to send data at dial-up speeds to what exactly?

--- End quote ---

You don't have to look stupid to prove your arguments, but whatever.. This is communication channel between power source equipment and load - exclusively and only power-related communications. No 3rd party data.

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