초록 ▼

An irrigation control system is provided which includes circuitry for minimizing electrical power consumption to permit battery-powered operation. The system also includes a microcomputer which is in a quiescent mode except when actuated by a rising edge of a clock signal which has been processed by

An irrigation control system is provided which includes circuitry for minimizing electrical power consumption to permit battery-powered operation. The system also includes a microcomputer which is in a quiescent mode except when actuated by a rising edge of a clock signal which has been processed by two type C flip-flops. The microcomputer is programmed to drive a display and to control a valve which includes a bi-stable solenoid for controlling an irrigation cycle.

대표청구항 ▼

An irrigation control system comprising: clock means for producing a clock output signal at predetermined time intervals; resettable switch means connected to said clock means for producing an actuating signal in response to said clock output signal; computing means for processing an input signal an

An irrigation control system comprising: clock means for producing a clock output signal at predetermined time intervals; resettable switch means connected to said clock means for producing an actuating signal in response to said clock output signal; computing means for processing an input signal and producing an output signal for controlling an irrigation cycle, said computing means having a halt input connected to said switch means for receiving said actuating signal therefrom to actuate said computing means from a powered quiescent condition to perform a predetermined logic sequence, said switch means including a first type D flip-flop having a clock terminal connected to said clock means to receive said clock output signal therefrom and a second D flip-flop having a reset terminal connected to a Q output of said first flip-flop, the Q output of said second flip-flop being connected to said halt input, whereby said clock output signal results in application of an actuating signal to said input for actuating said computing means; and valve means connected to said computing means and controlled thereby for regulating fluid flow for said irrigation cycle.