Water supply control apparatus
First Claim
1. A water supply control apparatus comprising:
- a flushing device to be supplied with water;
water supply valve means for controlling the supply of water to said flushing device;
driving signal generator means for selectively generating driving signals of first and second periods, respectively;
sensor means responsive to one, at a time, of said driving signals for detecting whether there is a user of said flushing device at one of said first and second periods, to produce a sensor signal selectively including a user-present signal and a user-absent signal of said one period;
control circuit means responsive to said sensor signal for controlling said water supply valve means; and
said control circuit means including;
first control means having switching means responsive to said user-absent signal for issuing a first switching signal to said driving signal generator means to generate the driving signal of the first period and responsive to said user-present signal for issuing a second switching signal to said driving signal generator means to generate the driving signal of the second period and output means responsive to said sensor signal for issuing a water supply valve control signal;
second control means responsive to said water supply valve control signal for controlling said water supply valve means; and
a battery as a power supply for operating said water supply valve means, said driving signal generator means, said sensor means, and said first and second control means.
1 Assignment
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Accused Products
Abstract
A water supply control apparatus includes a flushing device to be supplied with water, a water supply valve for controlling the supply of water to the flushing device, a driving signal generator for selectively generating driving signals of first and second periods, respectively, a sensor responsive to one, at a time, of the driving signals for detecting whether there is a user of the flushing device at one of the first and second periods, to produce a sensor signal selectively including a user-present signal and a user-absent signal of the one period, and a control circuit responsive to the sensor signal for controlling the water supply valve. The control circuit includes a first control section having a switching element responsive to the user-absent signal for issuing a first switching signal to the driving signal generator to generate the driving signal of the first period and responsive to the user-present signal for issuing a second switching signal to the driving signal generator to generate the driving signal of the second period and an output element responsive to the sensor signal for issuing a water supply valve control signal, a second control section responsive to the water supply valve control signal for controlling the water supply valve, and a battery as a power supply for operating the water supply valve, the driving signal generator, the sensor, the first and second control sections. The second period is shorter than the first period.
102 Citations
15 Claims
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1. A water supply control apparatus comprising:
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a flushing device to be supplied with water; water supply valve means for controlling the supply of water to said flushing device; driving signal generator means for selectively generating driving signals of first and second periods, respectively; sensor means responsive to one, at a time, of said driving signals for detecting whether there is a user of said flushing device at one of said first and second periods, to produce a sensor signal selectively including a user-present signal and a user-absent signal of said one period; control circuit means responsive to said sensor signal for controlling said water supply valve means; and said control circuit means including; first control means having switching means responsive to said user-absent signal for issuing a first switching signal to said driving signal generator means to generate the driving signal of the first period and responsive to said user-present signal for issuing a second switching signal to said driving signal generator means to generate the driving signal of the second period and output means responsive to said sensor signal for issuing a water supply valve control signal; second control means responsive to said water supply valve control signal for controlling said water supply valve means; and a battery as a power supply for operating said water supply valve means, said driving signal generator means, said sensor means, and said first and second control means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification