US Patent No. 9,301,461


Patent No. 9,301,461
Issue Date April 05, 2016
Title Systems And Methods To Adjust Irrigation
Inventorship Peter J. Woytowitz, San Diego, CA (US)
Christopher M. Shearin, Murrieta, CA (US)
Jeffrey J. Kremicki, Cardiff by the Sea, CA (US)
LaMonte D. Porter, San Marcos, CA (US)
Assignee HUNTER INDUSTRIES, INC., San Marcos, CA (US)

Claim of US Patent No. 9,301,461

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.