초록 ▼

An evapotranspiration (ET) unit includes a first communication link, a processor and a second communication link. The first communication link receives actual ET data from a plurality of environmental sensors. The processor calculates changes to a set of watering schedules of a predetermined waterin

An evapotranspiration (ET) unit includes a first communication link, a processor and a second communication link. The first communication link receives actual ET data from a plurality of environmental sensors. The processor calculates changes to a set of watering schedules of a predetermined watering program based on the actual ET data. The changes can increase or decrease the frequency and/or length of ON times for selected stations. The second communication link transmits the changes to a separate irrigation controller.

대표청구항 ▼

We claim: 1. An evapotranspiration (ET) unit, comprising:a box-like enclosure;a processor associated with the boxlike enclosure;a first communication link for enabling direct communication between the processor and a plurality of environmental sensors each capable of generating a signal representing

We claim: 1. An evapotranspiration (ET) unit, comprising:a box-like enclosure;a processor associated with the boxlike enclosure;a first communication link for enabling direct communication between the processor and a plurality of environmental sensors each capable of generating a signal representing an actual component of ET data;at least one control mounted in the box-like enclosure and operably connected to the processor for inputting further ET-related information;programming that enables the processor to calculate optimum watering schedules based on the actual ET data and the ET-related information including increases and decreases in the frequency and/or length of ON times for selected ones of a plurality of stations; anda second communication link for enabling communication between the processor and a separate irrigation controller that allows the processor to turn the plurality of stations ON and OFF through the irrigation controller in accordance with the optimum watering schedules.