Systems and methods to adjust irrigation
First Claim
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1. A stand alone irrigation system comprising:
- a stand alone irrigation controller comprising a plurality of user inputs that enable a user to enter a watering schedule including a run time, a computer processor operatively connected to the plurality of user inputs, and a memory connected to the computer processor;
a stand alone control unit comprising a memory storing programming and components of historical evapotranspiration (ET) data associated with a landscape area; and
a plurality of sensors in communication with the stand alone control unit, each sensor configured to generate an environmental signal representative of an irrigation condition of the landscape area, the plurality of sensors comprising at least a first sensor configured to generate a first signal representative of solar radiation and a second sensor configured to generate a second signal representative of temperature;
wherein the programming is configured to calculate a first value using the environmental signals communicated from the plurality of sensors, one or more of the components of historical ET data, and a reference comprising a maximum expected user-adjustable ET value, and communicate the first value to the computer processor of the stand alone irrigation controller to automatically scale the run time of the watering schedule based on the first value, the stand alone irrigation controller configured to provide operational signals to at least one irrigation control valve to cause the at least one irrigation control valve to supply water to irrigate the landscape area according to the scaled run time of the watering schedule.
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Abstract
An irrigation system includes an irrigation controller with an adjust feature and at least one sensor. The irrigation system further includes a sensor control unit operatively connected to the irrigation controller and the at least one sensor. The sensor control unit is configured to calculate an irrigation value using a signal from the sensor and to automatically modify a watering schedule of the irrigation controller through the adjust feature based on the irrigation value to thereby conserve water while maintaining plant health.
184 Citations
18 Claims
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1. A stand alone irrigation system comprising:
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a stand alone irrigation controller comprising a plurality of user inputs that enable a user to enter a watering schedule including a run time, a computer processor operatively connected to the plurality of user inputs, and a memory connected to the computer processor; a stand alone control unit comprising a memory storing programming and components of historical evapotranspiration (ET) data associated with a landscape area; and a plurality of sensors in communication with the stand alone control unit, each sensor configured to generate an environmental signal representative of an irrigation condition of the landscape area, the plurality of sensors comprising at least a first sensor configured to generate a first signal representative of solar radiation and a second sensor configured to generate a second signal representative of temperature; wherein the programming is configured to calculate a first value using the environmental signals communicated from the plurality of sensors, one or more of the components of historical ET data, and a reference comprising a maximum expected user-adjustable ET value, and communicate the first value to the computer processor of the stand alone irrigation controller to automatically scale the run time of the watering schedule based on the first value, the stand alone irrigation controller configured to provide operational signals to at least one irrigation control valve to cause the at least one irrigation control valve to supply water to irrigate the landscape area according to the scaled run time of the watering schedule. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A stand alone irrigation system comprising:
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a stand alone irrigation controller comprising a plurality of user inputs that enables a user to enter a watering schedule including a run time; a computer processor operatively connected to the plurality of user inputs, wherein the computer processor is configured to modify the watering schedule; a memory connected to the computer processor to store the watering schedule and constants selected to simulate local conditions of a landscape area; a first sensor local to the landscape area and configured to generate a signal representative of solar radiation; a second sensor local to the landscape area and configured to generate a signal representative of temperature, the computer processor configured to calculate a percentage change using the signal representative of solar radiation from the first sensor, the signal representative of temperature from the second sensor, one or more of the constants selected to simulate the local conditions of the landscape area, and a reference comprising a maximum expected user-adjustable evapotranspiration (ET) value; and programming stored in the memory to automatically modify the watering schedule by the percentage change, the stand alone irrigation controller configured to provide operational signals to at least one irrigation control valve to cause the at least one irrigation control valve to supply water to irrigate the landscape area according to the modified watering schedule. - View Dependent Claims (10, 11, 12, 13)
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14. A method to irrigate an irrigation site, the method comprising:
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providing a stand alone irrigation controller; accepting inputs at the stand alone irrigation controller from a user that enable the user to enter a watering schedule including a run time; receiving a first signal representative of solar radiation at an irrigation site from a first sensor local to the irrigation site; receiving a second signal representative of temperature at the irrigation site from a second sensor local to the irrigation site; storing in a memory constants selected to simulate local conditions of the irrigation site; calculating a percentage change to the watering schedule using the first signal, the second signal, and a user-adjustable reference that is based on one or more of the constants selected to simulate the local conditions of the irrigation site and a maximum expected user-adjustable evapotranspiration (ET) value; automatically adjusting the watering schedule by the percentage change; and providing operational signals to at least one irrigation control valve to cause the at least one irrigation control valve to supply water to the irrigation site according to the adjusted watering schedule. - View Dependent Claims (15, 16, 17, 18)
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Specification