Household tap water monitor
A household tap water monitor includes a water meter, an electrical control valve, a single chip micyoco, an LCD, an electrical source circuit, a photoelectric detector connected to a first input port of the SCM, a reset switch connected to a second input port of the SCM and a keyboard connected to a third input port of the SCM. The water meter and the electrical control valve are connected in series between a tap water pipe and a main tap water inlet pipe. A control port of the electrical control valve is connected to a first output port of the SCM, and the LCD is connected to a second output port of the SCM. The photoelectric detector is used for monitoring the rotation of a small impeller in the water meter. The electrical source circuit is used to supply electricity for the components mentioned above.
1. A household tap water monitor comprising:
a water meter and a valve connected in series between a tap water pipe and a main tap water inlet pipe, with the valve being an electric control valve,
a single chip micyoco, having
a first output port connecting a control port of the electrical control valve,
a second output port connecting a liquid crystal display,
a first input port connecting a photoelectric detector,
a second input port connecting a reset switch, and
the photoelectric detector, adapted to detect rotation of an impeller in the water meter thereof,
an electrical source circuit powering the single chip micyoco,
the photoelectric detector,
the liquid crystal display, and
the electrical control valve,
wherein the electrical control valve comprises a deceleration gear unit, an electric motor, an option device and a faucet valve; the first output port the single chip micyoco being connected to a control port of the electric motor; the deceleration gear unit comprising a spiral rod, a worm gear and a gear wheel installed on a first axle, a middle gear wheel and a gear wheel installed on a second axle, a gear wheel installed on a lower portion of an output axle, the spiral rod installed on a rotation axle of the electric motor meshing with the worm gear, the gear wheel on the second axle meshing with the gear wheel on the output axle; the option device comprising a spring fitted on an upper portion of the second axle and an option knob having insertion legs installed on an upper end of the second axle; the insertion legs of the option knob inserting in corresponding insertion holes, the spring pushing the second axle to a lower position, the middle gear wheel on the second axle meshing with the gear wheel on the first axle; when the insertion legs of the option knob do not insert in the corresponding insertion holes, the second axle being at an upper lower position, the middle gear wheel on the second axle not meshing with the gear wheel on the first axle anymore; the output axle being connected with a valve axle of the faucet valve.
2. The household tap water monitor as claimed in claim 1 , wherein an adjustment pipe is provided between a water inlet pipe of the water meter and a water outlet of the faucet valve; a lower housing having a front portion provided with a ring, a middle portion formed with a battery chamber and a rear portion formed with a chamber; an upper housing having a front portion provided with a water meter sleeve, a middle portion provided with a battery top board and a rear portion provided with a chamber top board; a dial portion of the water meter being inserted in the ring of the lower housing and the water meter sleeve of the upper housing, a fixture holding the water meter and connecting the water meter with the lower housing; the electric motor, the deceleration gear unit and the output axle being installed in the chamber of the lower housing; the upper housing being coupled to the lower housing, the valve axle of the faucet valve extending upward into the chamber of the lower housing and inserting in a corresponding insertion hole of a lower end of the output axle; an upper end of the output axle inserting through an axle hole of the chamber top board of the upper housing and extending out of the upper housing for installation of a manual knob; the upper end of the second axle inserting through a through hole of the chamber top board of the upper housing and extending out of the upper housing for installation of the option knob.