HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Page 1/2  >  >>
Cabe Atwell
User Rank
Blogger
Re: WIRELESS POWER STANDARD
Cabe Atwell   5/14/2014 10:31:17 PM
NO RATINGS
@Nancy- Kiva is an incredible platform for adults and kids to further their education. I had no idea that existed, great find. I do agree with you that textbooks, pens and paper still have their place but the future is here with cheap sub-$200 tablets that could be implemented into the curriculum as an added tool.

bobjengr
User Rank
Platinum
WIRELESS POWER STANDARD
bobjengr   5/3/2014 3:58:37 PM
NO RATINGS
Excellent post Cabe--Very informative.  I came from the appliance industry where most cooking products adhered to and were certified by UL 858.  Manufactureres are extremely active in creation, maintenance and enforcement of standards affecting there products.  UL goes about this in the proper fashion by asking for representations on varioius "standard boards".  The ultimate goal is user safety AND performance--but primarily safety.  Manufacturers are very happy to comply since they will ultimately feel the effects of any changes or modifications.  I feel, this is the way it should and must be relative to wireless power standards.

William K.
User Rank
Platinum
Re: Proprietary or Standard
William K.   4/28/2014 8:38:29 PM
NO RATINGS
Nancy and Cabe, thanks for actually putting some numbers on the best efficiency of wireless power transmission. NONE of those touting how wonderful it is have ever been willing to do that. What I have wondered about is why none of the folks who are so very concerned about th hoorible effects of stray magnetic fields have not been up in arms about the electromagnetic fields involved in wireless charging systems. Perhaps hazards are acceptable if they come with a luxury package.

chris.j
User Rank
Iron
Fact checking
chris.j   4/28/2014 3:02:47 PM
NO RATINGS
Hi Cabe, thanks for the article.  It was timely because I've been working on a wireless power design, and I also got a little newsletter from one of the groups this morning in addition the the DN newsletter with this article.

Now, I'm not out to be rude, but would like to point out a couple of facts.  You say that there are no standards for wireless power.  However, that's exactly what Qi is.  I know because we designed a wireless power product using it over a year ago (I'm working some follow-up issues right now).

Your mention of QI makes it sound like it is a separate company, with a wireless power method competing with methods from other companies, like LG and Samsung.  However, Qi is in fact a standard developed by the Wireless Power Consortium, which is (like the A4WP) "several tech companies banded together"....and the WPC in fact includes Samsung and LG!

Basically, what it appears like to me is that A4WP (sounds more like a ham radio call sign from some other country?) and Qi have created/are creating competitive "standards".  Think Beta vs. VHS, or Blu-Ray vs. whatever that other one was called.

Here's the article I got from WPC this morning, which gives a technology overview and talks about how Qi is also capable of the resonant transfer mode described above.  And yes, they make it sound like Qi is the best thing in the world, just like A4WP's articles make it sound like Rezence is.  Which one's actually better?  I don't know.

http://www.wirelesspowerconsortium.com/technology/magnetic-resonance-and-magnetic-induction-making-the-right-choice-for-your-application.html

This article could have been a lot better by doing a little bit more investigation first.  No offense, but right now it sounds like you read a press release and then added a little bit of personal commentary, without digging into the facts.  I just mean that as a suggestion for improvement...I do appreciate your work here.

And lastly - No, I have no affiliation with any of these, other than having used a couple of Qi-compatible devices in designs.  I also am greatly interested to see how these things all pan out, and if they're actually mass adopted.  And finally, yes, efficiency is a big issue!

Nancy Golden
User Rank
Platinum
Re: Proprietary or Standard
Nancy Golden   4/27/2014 10:59:50 PM
NO RATINGS
Oh I agree with you, Cabe. It just ain't the way the world works - as you know so well from your own example. By the way - do you know about Kiva? Very cool way to help folks along...


Oh, and I am not okay with little kids using $500 iPads. Much less expensive child-focused ones on a limited basis - maybe. But that is my own personal opinion - my poor deprived son did not get a cell phone until 8th grade and his video game system was the old nintendo when everyone else had X boxes. He is in the top 10% both in school and in the school-district on PSATs. His lack of technological toys doesn't seem to have hurt him any...

Cabe Atwell
User Rank
Blogger
Re: Proprietary or Standard
Cabe Atwell   4/27/2014 10:55:04 PM
NO RATINGS
If we donate to charity.

Recycle everything.

And avoid wasteful gorging.

I am ok with kids carrying tablets.

 

20% loss is insane to me. I had a design once for a car lighting system. As it stepped down the voltage to 5v, it lost all that excess power through heat. I insisted on using an efficient stepping power supply. But that convenience wasn't considered due to cost. Same will follow in wireless power in the beginning. 

Again, while people have 3L soda bottle for lights, we dump 20% because it's too hard to handle.

 

Nancy Golden
User Rank
Platinum
Re: Proprietary or Standard
Nancy Golden   4/27/2014 10:46:41 PM
NO RATINGS
Ouch, Cabe...that is a whole 'nother topic. Efficiency is something we should all be striving for, but if you want to talk on those terms - wireless charging is a luxury - just like most of our technology. Little kids running around with $500 iPads in the U.S. (you know it's true, no matter how ridiculous that sounds!) while children are starving in third world countries...yup - that is a whole 'nother can of worms...

Cabe Atwell
User Rank
Blogger
Re: Proprietary or Standard
Cabe Atwell   4/27/2014 10:40:23 PM
My only argument to wireless power.. what is lost.

Power will be lost.. there is no lossless wireless option (or wired). With Witricity, for example, getting only 80% means 20% was lost for no reason except convenience. As the rest of the world starves. 

 

Nancy Golden
User Rank
Platinum
Re: Proprietary or Standard
Nancy Golden   4/27/2014 8:38:17 PM
NO RATINGS
Nadine, it seems there is a company called WiTricity that is working at this technology and extends the distances from mere inches to feet through repeaters.

NadineJ
User Rank
Platinum
Re: Proprietary or Standard
NadineJ   4/27/2014 7:22:11 PM
NO RATINGS
@Nancy - it was a private event.  I've haven't seen it happen in such an open or unsecure way since.  It was very cool. 

I think the device had to be on the table.  Some people tried to sit near to the table but it didn't work. 

Page 1/2  >  >>


Partner Zone
Latest Analysis
Robots came into their own in the 1970s. Gone were the low-budget black-and-white B movies. Now robots roamed in full-color feature films with A-list actors.
The rear window on Ford's Lightweight Concept vehicle, based on the Fusion model, is made with a material combination devised by SABIC that saves 35% of the weight. The car's overall weight is 25% lighter than a standard production 2013 Fusion.
Sherlock Ohms highlights stories told by engineers who have used their deductive reasoning and technical prowess to troubleshoot and solve the most perplexing engineering mysteries.
There is still time to get in your gadgets for the Design News and Allied Electronics second annual Gadget Freak of the Year contest. The top three gadgeteers will be awarded a total of $10,000.
Major global metropolitan areas are implementing a vast number of technology, energy, transportation, and Internet projects to make the metropolis a friendlier, greener, safer, and more sustainable place to be.
More:Blogs|News
Design News Webinar Series
7/17/2014 11:00 a.m. California / 2:00 p.m. New York
6/25/2014 11:00 a.m. California / 2:00 p.m. New York
5/13/2014 10:00 a.m. California / 1:00 p.m. New York / 6:00 p.m. London
5/8/2014 11:00 a.m. California / 2:00 p.m. New York / 7:00 p.m. London
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Jul 21 - 25, Design Products With Bluetooth Low Energy
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Next Class: August 12 - 14
Sponsored by igus
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2014 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service