Soil moisture sensor systems and methods
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United States of America Patent
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-
Jan 6, 2009
Grant Date -
Jun 28, 2007
app pub date -
Dec 14, 2006
filing date -
Dec 16, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Soil moisture sensor systems and methods are disclosed. An exemplary soil moisture sensor system includes a sensor configured to receive soil between parallel plates. A capacitive measurement circuit is operatively associated with the parallel sensor. A processor receives input from the capacitive measurement circuit. The processor determines moisture content of the soil between the parallel plates of the sensor based on the flowing relationship:where L is the length of the sensor, H is the height of the sensor, and d is the separation between the parallel plates of the sensor.
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