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FOCUS ON ENERGY: SENSORS HEAD FOR LOWER COST, MORE MINIATURIZATION
Source: SmallTimes
Ten wireless sensors stand watch over the Ben Franklin Bridge linking Philadelphia and New
Jersey. Developed by MicroStrain Inc. of Williston, Vt., the pager-size devices measure
stresses on the bridge whenever commuter trains cross it.
To extend the life of the devices' batteries, they remain in "sleep" mode until an approaching
train rouses them to sentience.
MicroStrain's bridge-monitoring project illustrates the promise and problem wireless sensors
and other devices face: Such self-powered systems have had to contend with the limitations
of current battery technologies.
Click SmallTimes link above to read on...
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