Breaking News
Comments
Newest First | Oldest First | Threaded View
DrQuine
User Rank
CEO
re: Wireless window contacts benefit from energy harvesting sensors
DrQuine   10/19/2011 9:02:57 PM
NO RATINGS
It sounds like this technology "they can tell from the position of the handle whether the window is wide open, tilted open or closed" works on windows that crank open but not on common sash windows. Perhaps a version with magnetic contacts could detect the state of sliding windows. The biggest issue, however, is reliability. As the number of battery / energy harvesting sensor devices multiply in the house, homeowners become service engineers debugging and repairing failed sensors rather than the beneficiaries of the new technologies. When there are 100 sensors in the house, even a low failure rate becomes intolerable.

pixies
User Rank
Rookie
re: Wireless window contacts benefit from energy harvesting sensors
pixies   10/18/2011 1:36:04 PM
NO RATINGS
If this technology is applied a every window, will it severely interfere with the radio signal?

markhahn0
User Rank
Rookie
re: Wireless window contacts benefit from energy harvesting sensors
markhahn0   10/17/2011 7:33:05 PM
NO RATINGS
this makes a lot of sense to me - many "mote" type sensors could have quite low duty cycles and very rare communication. I always wonder about RF power harvesting, though: if I'm extracting power from a particular RF band, does that mean I'm hurting the propagation properties of anyone using that range of RF? does a harvester create a local RF hole, which might become more of a shadow for higher frequencies that need LOS?



Most Recent Comments
engineers
 
Weapon
 
rick merritt
 
rick merritt
 
Loser99
 
Aeroengineer
 
Aeroengineer
 
Aeroengineer
 
gfcorbett
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Glen Chenier

Engineers Solve Analog/Digital Problem, Invent Creative Expletives
Glen Chenier
Post a comment
An analog engineer and a digital engineer join forces, use their respective skills, and pull a few bunnies out of a hat to troubleshoot a system with which they are completely unfamiliar. ...

Max Maxfield

What's the Best Traveling Toolkit?
Max Maxfield
13 comments
A few years ago at a family Christmas party, I won a pocket knife as part of a "Dirty Santa" game. This little scamp was a Buck 730 X-Tract. In addition to an incredibly strong and sharp ...

Rishabh N. Mahajani, High School Senior and Future Engineer

Future Engineers: Don’t 'Trip Up' on Your College Road Trip
Rishabh N. Mahajani, High School Senior and Future Engineer
10 comments
A future engineer shares his impressions of a recent tour of top schools and offers advice on making the most of the time-honored tradition of the college road trip.

Larry Desjardin

Engineers Should Study Finance: 5 Reasons Why
Larry Desjardin
41 comments
I'm a big proponent of engineers learning financial basics. Why? Because engineers are making decisions all the time, in multiple ways. Having a good financial understanding guides these ...

Top Comments of the Week
Flash Poll
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)