SELF-POWERED IRRIGATION APPARATUS

摘要

An irrigation apparatus is provided, comprising: a pressure vessel configured to hold water under pressure, and configured to expand and contract based on the pressure of the held water; a selectable throttle configured to receive water at a first pressure, configured to provide the water to the pressure vessel at the first pressure when the selectable throttle is at a first setting, and configured to provide the water to the pressure vessel at a second pressure that is smaller than the first pressure when the selectable throttle is at a second setting; a control circuit configured to control whether the selectable throttle is at the first setting or at the second setting; and a piezoelectric element attached to the pressure vessel and configured to generate electricity when the pressure vessel expands or contracts.

主权项

1. An irrigation apparatus, comprising:
a pressure vessel configured to hold water under pressure, and configured to expand and contract based on the pressure of the held water; a selectable throttle configured to receive water at a first pressure, configured to provide the water to the pressure vessel at the first pressure when the selectable throttle is at a first setting, and configured to provide the water to the pressure vessel at a second pressure that is smaller than the first pressure when the selectable throttle is at a second setting; a control circuit configured to control whether the selectable throttle is at the first setting or at the second setting; and a piezoelectric element attached to the pressure vessel and configured to generate electricity when the pressure vessel expands or contracts.