초록

A method and apparatus provides a controlled, continuous up-and-down motion of a pop-up sprinkler head device during an irrigation period to approximate a modified sine wave output from the pop-up sprinkler device assuring uniform coverage of an area to be irrigated without excessive watering.

대표청구항 ▼

[ The invention claimed is:] [11.]11. A method of operating an irrigation system with at least one sprinkler head, the method comprising the steps of continuously switching the flow rate at the sprinkler head from a minimum flow rate to a relatively higher maximum flow rate and then back to the mini

[ The invention claimed is:] [11.]11. A method of operating an irrigation system with at least one sprinkler head, the method comprising the steps of continuously switching the flow rate at the sprinkler head from a minimum flow rate to a relatively higher maximum flow rate and then back to the minimum flow rate repeatedly over the course of an irrigation period to produce a series of flow cycles at the sprinkler head during a watering period, each flow cycle including a transition flow period as the flow at the sprinkler head transitions between the maximum flow rate and minimum flow rate, and the transition flow period in each flow cycle comprising a significant portion of the entire period of the flow cycle.