Breaking News
Research

Wireless window contacts benefit from energy harvesting sensors

10/16/2011 07:47 PM EDT
3 comments
NO RATINGS
More Related Links
View 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?

Flash Poll
Radio
LATEST ARCHIVED BROADCAST
Join our online Radio Show on Friday 11th July starting at 2:00pm Eastern, when EETimes editor of all things fun and interesting, Max Maxfield, and embedded systems expert, Jack Ganssle, will debate as to just what is, and is not, and embedded system.
Like Us on Facebook

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Times on Twitter
EE Times Twitter Feed
Top Comments of the Week