Automatically adjusting irrigation controller
First Claim
1. An irrigation control unit comprising:
- a memory storing historical values of a plurality of variables used at least in part in calculating plant water requirements;
at least one input adapted to receive signals corresponding to current values of one or more of the plurality of variables;
a processor coupled to the at least one input and the memory, the processor adapted to determine the plant water requirements at least in part using, for each of the plurality of variables on a variable by variable basis, a current value in the event the current value is available and at least in part using, for each of the plurality of variables, a stored historical value from a given set of multiple sets of stored historical values in the event the current value is not available, each set corresponding to a different geographic region, the given set corresponding to a geographic region for which the plant water requirements are to be determined.
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Accused Products
Abstract
Methods and devices are provided to automatically determine plant water requirements and adjust irrigation in order to make efficient use of water. In one implementation, an irrigation control unit comprises a memory storing historical values of a plurality of variables used at least in part in calculating plant water requirements, and at least one input adapted to receive signals corresponding to current values of one or more of the plurality of variables. The unit also comprises a processor coupled to the at least one input and the memory, the processor adapted to determine the plant water requirements at least in part using, for each of the plurality of variables, a current value in the event the current value is available and at least in part using, for each of the plurality of variables, a stored historical value in the event the current value is not available.
190 Citations
33 Claims
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1. An irrigation control unit comprising:
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a memory storing historical values of a plurality of variables used at least in part in calculating plant water requirements; at least one input adapted to receive signals corresponding to current values of one or more of the plurality of variables; a processor coupled to the at least one input and the memory, the processor adapted to determine the plant water requirements at least in part using, for each of the plurality of variables on a variable by variable basis, a current value in the event the current value is available and at least in part using, for each of the plurality of variables, a stored historical value from a given set of multiple sets of stored historical values in the event the current value is not available, each set corresponding to a different geographic region, the given set corresponding to a geographic region for which the plant water requirements are to be determined. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A processor implemented method for use in irrigation control comprising:
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determining, using a processor, for each of a plurality of variables used at least in part to determine plant water requirements, whether a current value is available; determining, using the processor, the plant water requirements at least in part using, for each of the plurality of variables on a variable by variable basis, the current value in the event the current value is available and at least in part using, for each of the plurality of variables, a stored historical value in the event the current value is not available; and wherein the determining the plant water requirements step further comprises using, for each of the plurality of variables, the stored historical value from a given set of multiple sets of stored historical values in the event the current value is not available, each set corresponding to a different geographic region, the given set corresponding to a geographic region for which the plant water requirements are to be determined. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. An irrigation control unit comprising:
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means for determining, using a processor, for each of a plurality of variables used at least in part to determine plant water requirements, whether a current value is available; means for determining, using the processor, the plant water requirements at least in part using, for each of the plurality of variables on a variable by variable basis, the current value in the event the current value is available and at least in part using, for each of the plurality of variables, a stored historical value in the event the current value is not available; and wherein the means for determining, using the processor, the plant water requirements further comprises means for using, for each of the plurality of variables, the stored historical value from a given set of multiple sets of stored historical values in the event the current value is not available, each set corresponding to a different geographic region, the given set corresponding to a geographic region for which the plant water requirements are to be determined.
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31. An irrigation control unit comprising:
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a memory storing multiple sets of historical values of a plurality of variables used at least in part in calculating plant water requirements, each set specific to a different geographic region, wherein the plurality of variables comprises two or more parameters selected from a group consisting of;
temperature, solar radiation, humidity, wind speed and an amount of rainfall, wherein the historical values are stored in the memory prior to the irrigation control unit being sold;a user interface adapted to receive a user input indicating a location of the irrigation control unit; at least one input adapted to receive signals corresponding to current values of one or more of the plurality of variables for a first geographic region corresponding to the location of the irrigation control unit; a processor coupled to the at least one input and the memory, the processor adapted to; select, based on the user input, a given set of the historical values of the plurality of variables; and determine the plant water requirements based on a determination of an evapotranspiration (ET) value at least in part using, for each of the plurality of variables on a variable by variable basis, a current value in the event the current value is available and at least in part using, for each of the plurality of variables, a stored historical value in the event the current value is not available, and wherein the processor is adapted to determine the plant water requirements at least in part using the current value for at least one of the plurality of variables and the stored historical value for at least one of the plurality of variables; and at least one sensor coupled to the at least one input and selected from a group consisting of;
a temperature sensor, a solar radiation sensor, a humidity sensor, a wind speed and a rainfall sensor.
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32. An irrigation control unit comprising:
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a memory storing historical values of a plurality of variables used at least in part in calculating plant water requirements; at least one input adapted to receive signals corresponding to current values of one or more of the plurality of variables; a processor coupled to the at least one input and the memory, the processor adapted to determine the plant water requirements at least in part using, for each of the plurality of variables on a variable by variable basis, a current value in the event the current value is available and at least in part using, for each of the plurality of variables, a stored historical value in the event the current value is not available, wherein the stored historical values are stored in the memory prior to the irrigation control unit being sold.
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33. A processor implemented method for use in irrigation control comprising:
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determining, for each of a plurality of variables used at least in part to determine plant water requirements, whether a current value is available; determining the plant water requirements at least in part using, for each of the plurality of variables on a variable by variable basis, the current value in the event the current value is available and at least in part using, for each of the plurality of variables, a stored historical value in the event the current value is not available; and wherein the determining steps are performed by an irrigation control unit, the stored historical value being stored in a memory of the irrigation control unit prior to a sale of the irrigation control unit.
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Specification