Data processing: generic control systems or specific application – Specific application – apparatus or process – Mechanical control system
Reexamination Certificate
2005-08-09
2005-08-09
Von Buhr, Maria N. (Department: 2125)
Data processing: generic control systems or specific application
Specific application, apparatus or process
Mechanical control system
C239S739000
Reexamination Certificate
active
06928339
ABSTRACT:
A GPS-based control system for irrigation systems includes a power supply, a nonvolatile memory for storing a first set of coordinates corresponding to a reference position for the irrigation system, circuitry for receiving GPS data and using the data to generate a second set of coordinates corresponding to a current position of the irrigation system, and a microprocessor for calculating the azimuth and the distance between the reference position and the current position using the first and second sets of coordinates. The control system communicates with a main controller of the irrigation system to control a function of the irrigation system, such as stopping, reversing, end gun operation, application rate, or other auxiliary output, at a selected distance or azimuth value of the current position relative to the reference position. The control system can be used with either a center pivot irrigation system or a linear move irrigation system.
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Buchleiter, Gerald W., et al., “Performance of Nondifferential GPS to Determine Sprinkler Position,” ASAE International Meeting, 1998.
Reinke Manufacturing Company, Inc.
Thompson Jeffrey L.
Thompson & Thompson P.A.
Von Buhr Maria N.
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