Fluid handling – Ambient condition change responsive – For controlling soil irrigation
Patent
1995-01-03
1996-08-20
Chambers, A. Michael
Fluid handling
Ambient condition change responsive
For controlling soil irrigation
13762412, 239 64, 239 69, A01G 2516
Patent
active
055469744
ABSTRACT:
A capacitive moisture sensor has two conductors encased in a dielectric material and oriented to minimize the dielectric effect of the moisture-absorbent medium in which the sensor is placed. The conductors, the casing, or both have one or more physical dimensions that vary monotonically across the length of the sensor. The physical dimensions vary in a manner that produces a linear relationship between moisture level and sensor impedance. The physical dimension may be the thickness of the dielectric casing or the spacing between portions of the conductors. In another aspect, the present invention has an irrigation control system with a central control unit and multiple remote units. Each remote unit has a moisture sensor and transmits a measured moisture level to the central control unit. In response to the measured moisture level, the central control unit determines whether to open or close a valve controlling the irrigation of the area in which the sensor is located.
REFERENCES:
patent: 4850386 (1989-07-01), Bireley
patent: 4875497 (1989-10-01), Worthington
patent: 4936333 (1990-06-01), Bireley
LandOfFree
Moisture monitoring system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Moisture monitoring system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Moisture monitoring system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2323817