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Sensors Use Building’s Electrical Wiring as Antenna
September 21, 2010 /
The trick reduces sensor power consumption and extends their range.
Wireless sensors scattered throughout a building can monitor everything from humidity and temperature to air quality and light levels. This seems like a good idea–until you consider the hassle and cost of replacing the sensors’ batteries every couple of years. The problem is that most wireless sensors transmit data in a way that drains battery power.
By Kate Greene
Full Story: http://www.technologyreview.com/communications/26319/?nlid=3532&a=f
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