|
Register | Sign In |
|
QuickSearch
Thread ▼ Details |
|
Thread Info
|
|
|
Author | Topic: Transmission of data by LED light | |||||||||||||||||||||||
GDR Member Posts: 6202 From: Sidney, BC, Canada Joined: Member Rating: 2.1 |
There's a lot of bright lights around here and I was wondering if any of you had any thoughts on this.
Wireless Data from Every Light Bulb
|
|||||||||||||||||||||||
jar Member (Idle past 415 days) Posts: 34026 From: Texas!! Joined: |
How do you get the data to the light bulb?
How is data addressed? How do you get the right data to the right light bulb? What is the infrastructure?Anyone so limited that they can only spell a word one way is severely handicapped!
|
|||||||||||||||||||||||
RAZD Member (Idle past 1426 days) Posts: 20714 From: the other end of the sidewalk Joined: |
Hi jar,
Yeah a bunch of unanswered questions, and I've been thinking on it some. It could, ostensibly, be passed from light bulb to light bulb or from device to light bulb. It would have to use some kind of IP system. A lot of things to develop ... but soon big brother may be blinking at you ...... OR free internet broadband at the speed of light? Both? Pandora's box? Enjoyby our ability to understand Rebel American Zen Deist ... to learn ... to think ... to live ... to laugh ... to share. Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click)
|
|||||||||||||||||||||||
crashfrog Member (Idle past 1488 days) Posts: 19762 From: Silver Spring, MD Joined: |
How do you get the data to the light bulb? Cheap microprocessors.
How is data addressed? How do you get the right data to the right light bulb? The great part about Ethernet-style networking is that it works on any kind of physical layer: wires, radios, optical transmission, even sonically. You could use Ethernet to network guys pounding drums if you could teach them to roll dice, too. Transmission rates aren't going to be very high at these intensities, but someone in the comments of the linked video has an interesting notion of car taillights transmitting information about the current detected rate of speed, the car's VIN number, and other such information. Having cars in the front communicate information to cars in the rear has very useful implications for automated driving.
|
|||||||||||||||||||||||
jar Member (Idle past 415 days) Posts: 34026 From: Texas!! Joined: |
Yes, simple line of sight uses are areas where this technology could be used, but that is NOT related to what was presented.
Anyone so limited that they can only spell a word one way is severely handicapped!
|
|||||||||||||||||||||||
crashfrog Member (Idle past 1488 days) Posts: 19762 From: Silver Spring, MD Joined: |
It would have to use some kind of IP system. You're thinking at the wrong layer. This is physical layer, IP-style addressing is network layer. MAC-style addressing would work just fine, since the endpoints of the physical layer are relatively well-defined; these are all point-to-point connections for the most part (star topology, at most.)
OR free internet broadband at the speed of light? Transmission rates for this are probably not very high given that the light also has to retain its usefulness as illumination. That's going to practically limit data transmission to perhaps a fifth or so of its potential. Too much data on the LED and it'll be much dimmer as a result of all those zeros. Edited by crashfrog, : No reason given. Edited by crashfrog, : No reason given.
|
|||||||||||||||||||||||
RAZD Member (Idle past 1426 days) Posts: 20714 From: the other end of the sidewalk Joined: |
Thanks crashfrog,
You're thinking at the wrong layer. Still needs to get from A to B and then back to A for the information to be useful/used. Your diagram shows what I meant (path determination & logical addressing (IP)).
Transmission rates for this are probably not very high given that the light also has to retain its usefulness as illumination. That's going to practically limit data transmission to perhaps a fifth or so of its potential. Too much data on the LED and it'll be much dimmer as a result of all those zeros. IIRC, he said you could dim the lights at night below human detection threshold and still transmit data. You could also modulate the brightness between bright and not-so bright, and maintain level of light desired. Enjoyby our ability to understand Rebel American Zen Deist ... to learn ... to think ... to live ... to laugh ... to share. Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click)
|
|||||||||||||||||||||||
fearandloathing Member (Idle past 4166 days) Posts: 990 From: Burlington, NC, USA Joined: |
Your light bulb idea is the weak link, the rest of the technology exists and is already in use as far as how you could get data over power lines. Essentially you are wanting to know about data being transferred over power lines and how it could be received by a computer?
quote: Full article There are much better ways to get data to and from power lines as is shown in the wiki article."No sympathy for the devil; keep that in mind. Buy the ticket, take the ride...and if it occasionally gets a little heavier than what you had in mind, well...maybe chalk it off to forced conscious expansion: Tune in, freak out, get beaten." Hunter S. Thompson Ad astra per aspera Nihil curo de ista tua stulta superstitione.
|
|||||||||||||||||||||||
RAZD Member (Idle past 1426 days) Posts: 20714 From: the other end of the sidewalk Joined: |
Thanks for the powerline information, fearandloathing, it looks like existing technology exists then, to implement this.
Your light bulb idea is the weak link, What I like about this idea is that it gives you the freedom of wifi in any room equipped with broadcast and reception light systems, without the security leak issues (ie don't need security locks on your lifi like you do on wifi to prevent others from using or seeing your use). And that it is broadbroadband. That means much better than 4G can deliver. My parents live in a hollow along the seashore, and cell phone reception is poor at best, data reception is worse (no 3G to say nothing of 4G). One could have skype phones to use indoors as well (replace landlines and have all the technology of cell phones). The weak link here then is using it outdoors. Enjoy.by our ability to understand Rebel American Zen Deist ... to learn ... to think ... to live ... to laugh ... to share. Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click)
|
|||||||||||||||||||||||
jar Member (Idle past 415 days) Posts: 34026 From: Texas!! Joined: |
The problem though is in the transportation system.. Our power distribution system is already really lossy so we are still limited by the size of the pipe getting to the device and security all along the way. Capacity and security were two of the items mentioned and for this to work either every light bulb transmits every packet or there must be some method of addressing where the receiving device notifies the light bulb to establish a pathway.
Anyone so limited that they can only spell a word one way is severely handicapped!
|
|||||||||||||||||||||||
fearandloathing Member (Idle past 4166 days) Posts: 990 From: Burlington, NC, USA Joined: |
What I like about this idea is that it gives you the freedom of wifi in any room equipped with broadcast and reception light systems I am a communications enthusiast and an amateur operator and remember some of the arguments against using power lines for data, interference and security mostly. That's the only reason I knew about this. I am all for it though. If a simple microprocessor was used then I am sure that it would be easy to incorporate infrared LEDs and also infrared photo detectors in a light-bulb package that could also still work as a source or light independent of it's other use as a channel for data transfer. There would be a few things to overcome...specialized lampshades... an industry standard...ect Edited by fearandloathing, : No reason given."No sympathy for the devil; keep that in mind. Buy the ticket, take the ride...and if it occasionally gets a little heavier than what you had in mind, well...maybe chalk it off to forced conscious expansion: Tune in, freak out, get beaten." Hunter S. Thompson Ad astra per aspera Nihil curo de ista tua stulta superstitione.
|
|||||||||||||||||||||||
RAZD Member (Idle past 1426 days) Posts: 20714 From: the other end of the sidewalk Joined: |
If a simple microprocessor was used then I am sure that it would be easy to incorporate infrared LEDs and also infrared photo detectors in a light-bulb package that could also still work as a source or light independent of it's other use as a channel for data transfer. There would be a few things to overcome...specialized lampshades... an industry standard...ect What if you just had a dedicated light with the chip installed to use near your computer? Enjoyby our ability to understand Rebel American Zen Deist ... to learn ... to think ... to live ... to laugh ... to share. Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click)
|
|||||||||||||||||||||||
fearandloathing Member (Idle past 4166 days) Posts: 990 From: Burlington, NC, USA Joined: |
That would work, you could carry it with you anywhere that is in the network, rather bulky. A smaller wireless interface between a plug and socket seems like a better alternative it leaves the complicated bulb out of it and uses off the shelf technology.
My question is why use light at all? Edited by fearandloathing, : No reason given."No sympathy for the devil; keep that in mind. Buy the ticket, take the ride...and if it occasionally gets a little heavier than what you had in mind, well...maybe chalk it off to forced conscious expansion: Tune in, freak out, get beaten." Hunter S. Thompson Ad astra per aspera Nihil curo de ista tua stulta superstitione.
|
|||||||||||||||||||||||
jar Member (Idle past 415 days) Posts: 34026 From: Texas!! Joined: |
Light has far greater bandwidth.
But there is the rub. Communication is limited to the speed of the slowest link and light is line of sight and subject to medium degradation.Anyone so limited that they can only spell a word one way is severely handicapped!
|
|||||||||||||||||||||||
RAZD Member (Idle past 1426 days) Posts: 20714 From: the other end of the sidewalk Joined: |
A smaller wireless interface between a plug and socket seems like a better alternative. Leave the complicated bulb out of it. A plug-in "night-light" would be portable, something like blue-tooth, and the technology could also be used for keyboards and mice. Again the light limits the broadcast to improve security issues. Enjoy.by our ability to understand Rebel American Zen Deist ... to learn ... to think ... to live ... to laugh ... to share. Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click)
|
|
|
Do Nothing Button
Copyright 2001-2023 by EvC Forum, All Rights Reserved
Version 4.2
Innovative software from Qwixotic © 2024