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Evapotranspiration unit for re-programming an irrigation controller

  • US 7,412,303 B1
  • Filed: 11/29/2005
  • Issued: 08/12/2008
  • Est. Priority Date: 11/29/2005
  • Status: Active Grant
First Claim
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1. An evapotranspiration (ET) unit, comprising:

  • a box-like enclosure;

    a processor mounted in the box-like enclosure;

    a first communication link for enabling communication between the processor and a plurality of environmental sensors each capable of generating a signal representing an actual component of ET data;

    a plurality of manually actuable controls mounted in the box-like enclosure and operably connected to the processor for inputting further ET-related information selected from the group consisting of plant type, soil condition, growth stage and sprinkler precipitation rate;

    programming that enables the processor to calculate changes to a set of watering schedules of a predetermined watering program of a separate irrigation controller based on the actual ET data and the ET-related information, the changes including increases and decreases in the frequency and/or length of ON times for selected ones of a plurality of stations; and

    a second communication link for enabling communication between the processor and the irrigation controller for communicating the changes to the irrigation controller.

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