Electronic valve control apparatus
First Claim
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1. In a valve control system including at least one valve device connected to a supply source of fluid under pressure and a control apparatus to operate the valve device, an improved control apparatus comprising:
- an electronic clock which delivers output time pulse signals indicating the passage of time to a logic circuit and delivers output signals of valve operation time schedules preset in itself to a calendar circuit;
a calendar circuit which counts units of days and delivers output signals of valve operation times on the preset days to a logic circuit;
a logic circuit which compares the time pulse signals from said electronic clock with the input signals from said calendar circuit and when they coincide delivers output actuating signals to a valve driving circuit;
means for setting sprinkling time schedule on desired days arranged manually according to direct observation of the area to be sprinkled;
a cancel circuit which cancels the preset sprinkling current time schedule according to a signal from a rain sensor;
an automatic power off circuit which automatically turns off check signal lamps and displays to save energy;
a valve driving circuit which is actuated by said logic circuit and controls the valve device; and
an electric power source circuit consisting of a solar battery and a secondary battery, which supplies electricity to said electronic clock, said calendar circuit, said logic circuit, said cancel circuit, said automatic power off circuit, said valve driving circuit and a valve device that is to be operated.
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Abstract
An electronic valve control apparatus for operating a valve device connected to a water supply pipeline for spraying water over the field or land comprising: a solar battery; a secondary battery charged therefrom; an electronic clock; a calendar circuit; a logic circuit which delivers output valve control signals in response to a predetermined schedule; and a valve driving circuit which controls the valve device.
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Citations
2 Claims
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1. In a valve control system including at least one valve device connected to a supply source of fluid under pressure and a control apparatus to operate the valve device, an improved control apparatus comprising:
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an electronic clock which delivers output time pulse signals indicating the passage of time to a logic circuit and delivers output signals of valve operation time schedules preset in itself to a calendar circuit; a calendar circuit which counts units of days and delivers output signals of valve operation times on the preset days to a logic circuit; a logic circuit which compares the time pulse signals from said electronic clock with the input signals from said calendar circuit and when they coincide delivers output actuating signals to a valve driving circuit; means for setting sprinkling time schedule on desired days arranged manually according to direct observation of the area to be sprinkled; a cancel circuit which cancels the preset sprinkling current time schedule according to a signal from a rain sensor; an automatic power off circuit which automatically turns off check signal lamps and displays to save energy; a valve driving circuit which is actuated by said logic circuit and controls the valve device; and an electric power source circuit consisting of a solar battery and a secondary battery, which supplies electricity to said electronic clock, said calendar circuit, said logic circuit, said cancel circuit, said automatic power off circuit, said valve driving circuit and a valve device that is to be operated. - View Dependent Claims (2)
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Specification