| 摘要 |
Water outlet control system for controlling the shut-off valve(s) (4) of the water supply of one or more outlets (2), provided with a push button (5) for each outlet, placed near the outlet, a system of conduits and an electronic control unit (3). The push button (5) is a piezoelectric push button having a piezoelectric element (11) fitted on one side and an interface circuit (6) fitted on the other side of a carrier, which are accommodated in a watertight housing. The interface circuit has a switching element (7) connected parallel to the piezoelectric element and a rectifier bridge (8) which is fed by an alternating voltage from the electronic control unit (3). The switching element is short-circuited when the push button is not depressed and is open when the push button is depressed, while the control unit is actuated through brief operation of the push button and causes the valve to open for a set period of time. |
