Physical property sensor with active electronic circuit and wireless power and data transmission
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United States of America Patent
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May 26, 2015
Grant Date -
Dec 13, 2012
app pub date -
Aug 17, 2012
filing date -
Jul 20, 2008
priority date (Note) -
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Abstract
Wireless sensors configured to record and transmit data as well as sense and, optionally, actuate to monitor physical properties of an environment and, optionally, effect changes within that environment. In one aspect, the wireless sensor can have a power harvesting unit; a voltage regulation unit, a transducing oscillator unit, and a transmitting coil. The voltage regulation unit is electrically coupled to the power harvesting unit and is configured to actuate at a minimum voltage level. The transducing oscillator unit is electrically coupled to the voltage regulation unit and is configured to convert a sensed physical property into an electrical signal. Also, the transmitting coil is configured to receive the electrical signal and to transmit the electrical signal to an external antenna.
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