CN219016826U - Control circuit for water control box - Google Patents
Control circuit for water control box Download PDFInfo
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- CN219016826U CN219016826U CN202223520975.6U CN202223520975U CN219016826U CN 219016826 U CN219016826 U CN 219016826U CN 202223520975 U CN202223520975 U CN 202223520975U CN 219016826 U CN219016826 U CN 219016826U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 102
- 238000004659 sterilization and disinfection Methods 0.000 claims description 38
- 230000001954 sterilising effect Effects 0.000 claims description 36
- 238000001514 detection method Methods 0.000 claims description 34
- 230000005669 field effect Effects 0.000 claims description 14
- 238000005070 sampling Methods 0.000 claims description 3
- 235000020188 drinking water Nutrition 0.000 abstract description 16
- 239000003651 drinking water Substances 0.000 abstract description 16
- 239000003990 capacitor Substances 0.000 description 14
- 230000006855 networking Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses a control circuit for a water control box, which comprises a singlechip, a pulse valve driving circuit and an Internet of things module, wherein the singlechip is electrically connected with the pulse valve driving circuit, the pulse valve driving circuit comprises a driving chip L9110S, a first input end and a second input end of the driving chip L9110S are respectively and correspondingly electrically connected with a first driving control end and a second driving control end of the singlechip, and a first output end and a second output end of the driving chip L9110S are respectively and electrically connected with an anode and a cathode of a pulse valve; the singlechip is also electrically connected with the internet of things module, receives signals from the internet of things module and is used for controlling the opening and closing of the pulse valve. The control circuit for the water control box can enable the water control box to accurately control water outlet and water interruption of direct drinking water entering a user, is convenient for remote control and the like.
Description
Technical Field
The utility model relates to the field of direct drinking water, in particular to a control circuit for a water control box.
Background
With the improvement of health consciousness of masses, the water quality requirement on the living drinking water is greatly improved. The problems of the traditional tap water quality treatment process, secondary pollution of the supplied water and the like make the water quality safety of tap water difficult to ensure, not to mention direct drinking. Nowadays, more and more direct drinking water systems gradually start to develop and move to thousands of households.
When the direct drinking water is supplied in a commercial form, the direct drinking water supply system can be applied to the scenes of residential community in-house water supply, campus in-house water supply, office building in-house water supply, hospital in-house water supply and the like. As shown in FIG. 1, a water control device or a water control box is needed, so that the requirements of accurate water outlet and water cut-off control, convenience in remote control, accurate metering and charging, water quality detection, convenience in purchase and use of users and the like can be met. Therefore, a water control circuit meeting the requirements is correspondingly arranged in the water control device or the water control box.
Disclosure of Invention
The utility model provides a control circuit for a water control box, which solves the water consumption problems of how to facilitate users to accurately discharge and cut off water for direct drinking water entering a user through the water control box, and is convenient for remote control and the like.
In order to solve the technical problems, the utility model provides a control circuit for a water control box, which comprises a singlechip, a pulse valve driving circuit and an internet of things module, wherein the singlechip is electrically connected with the pulse valve driving circuit, the pulse valve driving circuit comprises a driving chip L9110S, a first input end and a second input end of the driving chip L9110S are respectively and correspondingly electrically connected with a first driving control end and a second driving control end of the singlechip, and a first output end and a second output end of the driving chip L9110S are respectively and electrically connected with an anode and a cathode of a pulse valve; the singlechip is also electrically connected with the Internet of things module, receives signals from the Internet of things module and is used for controlling the opening and closing of the pulse valve.
Preferably, the internet of things module comprises a chip EC800N and an SI M card, the chip EC800N and the SI M card are electrically connected, and the singlechip is connected with an asynchronous serial port between the chip EC 800N.
Preferably, the power-on control circuit of the internet of things further comprises a power-on control circuit of the internet of things for powering on the chip EC800N, the power-on control circuit of the internet of things comprises an electric control MOS tube of the internet of things, a source electrode of the electric control MOS tube of the internet of things is electrically connected with a first direct current power supply, a grid electrode of the electric control MOS tube of the internet of things is electrically connected with a power-on control end of the internet of things of the singlechip, and a drain electrode of the electric control MOS tube of the internet of things is electrically connected with a power end of the chip EC 800N.
Preferably, the flow detection circuit is used for detecting the water yield of the water control box, the flow detection circuit comprises a flowmeter, a power end of the flowmeter is electrically connected with a second direct current power supply, a signal end of the flowmeter is electrically connected with a first flow detection resistor and a second flow detection resistor and then is connected with the second direct current power supply, and an electric connection part of the first flow detection resistor and the second flow detection resistor is electrically connected with a flow sampling end of the singlechip.
Preferably, the display screen is electrically connected with the single chip.
Preferably, the display screen power-on control circuit is used for powering on the display screen, the display screen power-on control circuit comprises a display screen power-on control MOS tube, a source electrode of the display screen power-on control MOS tube is electrically connected with a third direct current power supply, a grid electrode of the display screen power-on control circuit is electrically connected with a display screen power-on control end of the singlechip, and a drain electrode of the display screen power-on control circuit is electrically connected with a power end of the display screen.
Preferably, the ultraviolet sterilization circuit further comprises an ultraviolet sterilization control field effect tube, the drain electrode of the sterilization control field effect tube is electrically connected with the negative electrode of the ultraviolet sterilization lamp, the positive electrode of the ultraviolet sterilization lamp is electrically connected with a fourth direct current power supply, the grid electrode of the sterilization control field effect tube is electrically connected with the sterilization control resistor and then is electrically connected with the sterilization control end of the singlechip, and the source electrode of the sterilization control field effect tube is grounded.
Preferably, the alarm circuit further comprises an alarm circuit, the positive electrode of the alarm circuit comprises a buzzer, the positive electrode of the buzzer is electrically connected with a fourth direct current power supply, the negative electrode of the buzzer is electrically connected with the collector electrode of an alarm control triode, the base electrode of the alarm control triode is electrically connected with the first alarm voltage dividing resistor and then is electrically connected with the alarm control end of the singlechip, and the base electrode of the alarm control triode is further electrically connected with the second alarm voltage dividing resistor and then is grounded.
Preferably, the system further comprises a work indication circuit, wherein the work indication circuit comprises a work indication light emitting diode, the positive electrode of the work indication light emitting diode is electrically connected with a work indication current limiting resistor and then connected with a work indication control end of the singlechip, and the negative electrode of the work indication light emitting diode is grounded.
Preferably, the power supply circuit further comprises a power supply circuit, wherein the power supply circuit comprises a chip XL1509-5V, a fourth direct current power supply is input to the input end of the chip XL1509-5V, and the output end of the chip XL1509-5V is electrically connected with a filter inductor, a first power supply output diode and a second power supply output diode in sequence and then outputs the first direct current power supply; the electric connection part of the filter inductor and the first power output diode is also connected with a protection resistor and then outputs a second direct current power supply; and the electric connection part of the filter inductor and the first power output diode is also electrically connected with a third power output diode and then outputs a third direct current power supply.
The beneficial effects of the utility model are as follows: the utility model discloses a control circuit for a water control box, which comprises a singlechip, a pulse valve driving circuit and an Internet of things module, wherein the singlechip is electrically connected with the pulse valve driving circuit, the pulse valve driving circuit comprises a driving chip L9110S, a first input end and a second input end of the driving chip L9110S are respectively and correspondingly electrically connected with a first driving control end and a second driving control end of the singlechip, and a first output end and a second output end of the driving chip L9110S are respectively and electrically connected with an anode and a cathode of a pulse valve; the singlechip is also electrically connected with the internet of things module, receives signals from the internet of things module and is used for controlling the opening and closing of the pulse valve. The control circuit for the water control box can enable the water control box to accurately control water outlet and water interruption of direct drinking water entering a user, is convenient for remote control and the like.
Drawings
FIG. 1 is a schematic view of the internal structure of a water control cartridge according to the present utility model;
FIG. 2 is a schematic diagram of a single chip microcomputer in a control circuit of a water control box according to the utility model;
FIG. 3 is a schematic diagram of an Internet of things module in a control circuit of a water control box according to the present utility model;
FIG. 4 is a communication circuit between a singlechip and a chip EC800N in a control circuit of a water control box according to the utility model;
FIG. 5 is another communication circuit between a singlechip and a chip EC800N in a control circuit of a water control box according to the utility model;
FIG. 6 is a schematic diagram of an SiM card holder in a control circuit of a water control box according to the present utility model;
FIG. 7 is an Internet of things power-on control circuit in a control circuit of a water control box according to the utility model;
FIG. 8 is a pulse valve driver circuit in a control circuit of a water control cartridge according to the present utility model;
FIG. 9 is a flow sensing circuit in a control circuit of a water control box according to the present utility model;
FIG. 10 is a display screen power-on control circuit in a control circuit of a water control box according to the present utility model;
FIG. 11 is an ultraviolet sterilization circuit in a control circuit of a water control box according to the present utility model;
FIG. 12 is an alarm circuit in a control circuit of a water control box according to the present utility model;
FIG. 13 is an operational indication circuit in a control circuit of a water control box according to the present utility model;
fig. 14 is a power supply circuit in a control circuit of a water control cartridge according to the present utility model.
Detailed Description
In order that the utility model may be readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings. Preferred embodiments of the present utility model are shown in the drawings. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used in this specification includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, a water control box 1 is provided with a water inlet 4 and a water outlet 5, direct drinking water enters the water control box 1 through the water inlet 4, a flowmeter 2 and a pulse valve 3 are arranged in the water control box 1, and the direct drinking water flows out through the water outlet 5 after passing through the flowmeter 2 and the pulse valve 3; the flowmeter 2 is used for measuring the water yield of the direct drinking water, and the direct drinking water can flow out from the water outlet 5 after the pulse valve 3 is opened. The inside of water accuse box 1 is provided with control circuit, and this control circuit includes thing networking module, corresponds the subsides at the surface of water accuse box 1 and is equipped with the two-dimensional code, and the user scans the two-dimensional code on the water accuse box 1, can independently operate and fill the value and purchase water.
The water control box 1 can be applied to the scenes of residential community in-house water supply, campus in-house water supply in different qualities, office building in-house water supply in different qualities, hospital in-house water supply in different qualities and the like.
In the utility model, the control circuit for the water control box comprises a singlechip, a pulse valve driving circuit and an Internet of things module, wherein the singlechip is electrically connected with the pulse valve driving circuit, is also electrically connected with the Internet of things module, receives signals from the Internet of things module and is used for controlling the opening and closing of the pulse valve. The singlechip is connected with the remote control terminal through the internet of things module. The remote control terminal can be electronic mobile equipment (smart phone, tablet personal computer and the like), and can be connected with the intelligent internet of things of the water control box through the internet of things module, so that the purpose of purchasing direct drinking water is achieved.
Specifically, as shown in fig. 2 to 6, fig. 2 is a schematic diagram of a single chip microcomputer in the present utility model, and the single chip microcomputer is powered by a second dc power supply +5v; fig. 3 is a schematic diagram of an internet of things module, where the internet of things module includes a chip EC800N and an sim card, the chip EC800N and the sim card are electrically connected, and an asynchronous serial port is connected between the single chip microcomputer and the chip EC 800N.
With reference to fig. 4 and 5, communication between the singlechip and the chip EC800N is an asynchronous serial communication connection. The first serial port readout end P3.0 of the singlechip in fig. 2 is electrically connected to the collector of the first control triode Q3 in fig. 4, the base of the first control triode Q3 is electrically connected to the first current limiting resistor R24 and then connected to a fifth direct current power supply +1.8v, and the fifth direct current power supply +1.8v is output from the power output end vdd_ext of the chip EC800N in fig. 3; the emitter of the first control transistor Q3 is electrically connected to the serial write port main_txd of the chip EC800N in fig. 3.
Preferably, a resistor R22 is further arranged between the first serial port readout end P3.0 of the singlechip in FIG. 2 and the collector of the first control triode Q3 in FIG. 4; the first serial port reading end P3.0 of the singlechip is electrically connected with the first pull-up resistor R8 and then connected with the first direct current +5V.
The first serial port reading end P3.0 of the singlechip can receive data from the chip EC800N, and when the first serial port reading end P3.0 of the singlechip passes through the output low level, the first control triode Q3 is cut off, and the first serial port reading end P3.0 of the singlechip stops receiving the data.
The first serial port writing end P3.1 of the singlechip in fig. 2 is electrically connected with the emitter of the second control triode Q1 in fig. 5, the base of the second control triode Q1 is electrically connected with the second current limiting resistor R13 and then is connected with the fifth direct current power supply +1.8v, and the collector of the second control triode Q1 is electrically connected with the serial port reading end MAI n_rxd of the chip EC800N in fig. 3.
Preferably, a resistor R17 is also connected between the collector of the second control triode Q1 and the serial port readout end MAI N_RXD of the chip EC 800N; the serial port read-out end MAI n_rxd of the chip EC800N is further electrically connected to the second pull-up resistor R9 and then connected to the fifth dc power supply +1.8v.
The serial port read-out end MAI n_rxd of the chip EC800N can receive data from the single chip microcomputer, and when the serial port read-out end MAI n_rxd of the chip EC800N outputs a low level, the second control triode Q1 is turned off, and the serial port read-out end MAI n_rxd of the chip EC800N stops receiving data.
Further, as shown in fig. 6, the sim card is fixed in the sim card holder and electrically connected to the chip EC 800N. The power supply terminal sim_vdd of the sim card holder in fig. 6 is connected to the usim_vdd pin of the chip EC800N in fig. 3, and is further electrically connected to the capacitor C13 and then grounded; after the reset terminal SI M_RST is connected with the resistor R7, the reset terminal SI M_RST is connected to the USI M_RST pin of the chip EC800N in FIG. 3; the clock terminal SI M_CLK is connected with the resistor R10 and then is connected to the USI M_CLK pin of the chip EC800N in FIG. 3; the I/0 terminal sim_io is connected to the US im_data pin of the chip EC800N in fig. 5 through the electrical connection resistor R11, and is also connected to the pull-up resistor R12 and then connected to the power supply terminal sim_vdd.
Further, as shown in fig. 7, the power-on control circuit of the internet of things for powering on the chip EC800N is further included, the power-on control circuit of the internet of things comprises an internet of things power-on control MOS transistor Q2, a source electrode of the internet of things power-on control MOS transistor Q2 is electrically connected with a first direct current power source vcc_gprs, a gate electrode is electrically connected with an internet of things power-on control end P3.6 of the singlechip in fig. 2, and a drain electrode is electrically connected with a power source end VBAT of the chip EC800N in fig. 3.
Preferably, in the internet of things power-on control circuit, a grid electrode of the internet of things power-on control MOS transistor Q2 is electrically connected with a first internet of things power-on resistor R18 and then connected with an internet of things power-on control end P3.6 of the singlechip in FIG. 2, and is also electrically connected with a second internet of things power-on resistor R15 and then connected with a first direct current power-on VCC_GPRS.
When the chip microcomputer control internet of things power-on control MOS tube Q2 in FIG. 2 is normally operated, the first direct current power supply VCC_GPRS can supply power to the chip EC800N, when the chip microcomputer control internet of things power-on control MOS tube Q2 is cut off, the chip EC800N is powered off, then the chip microcomputer control internet of things power-on control MOS tube Q2 is conducted again, power supply to the chip EC800N is achieved, and accordingly power-on control of the chip EC800N can be achieved again, restarting operation of the chip EC800N is achieved, and reliability of use of the chip EC800N is guaranteed.
Further, as shown in fig. 8, the pulse valve driving circuit is connected with the pulse valve through an interface J6; the pulse valve driving circuit comprises a driving chip L9110S, a first input end IA and a second input end I B of the driving chip L9110S are respectively and correspondingly and electrically connected with a first driving control end P0.3 and a second driving control end P0.2 of the singlechip in FIG. 2, and a first output end OA and a second output end OB of the driving chip L9110S are respectively and electrically connected with an anode (a second core of an interface J6) and a cathode (a second core of an interface J6) of the pulse valve. The power supply terminal VCC of the driving chip L9110S is powered by the third dc power +5v_m. The single chip microcomputer can control the pulse valve to be opened and closed through the pulse valve driving circuit.
Further, as shown in fig. 9, the control circuit for the water control box further includes a flow detection circuit for detecting the water yield of the water control box, the flow detection circuit includes a flow meter, and in fig. 9, the flow meter is electrically connected through an interface J5; the power end (the first end of the interface J5) of the flowmeter is electrically connected with the second direct-current power supply +5V, the grounding end (the third end of the interface J5) is grounded, the signal end (the second end of the interface J5) of the flowmeter is electrically connected with the first flow detection resistor R30 and the second flow detection resistor R28 and then is connected with the second direct-current power supply +5V, and the electric connection part of the first flow detection resistor R30 and the second flow detection resistor R28 is electrically connected with the flow sampling end P3.4 of the singlechip in FIG. 2.
The electric connection part of the first flow detection resistor R30 and the second flow detection resistor R28 is also electrically connected with the filter capacitor C26 and then grounded. When the water control box flows out of the direct drinking water, the flowmeter can input signals to the singlechip of FIG. 5 through the signal end (the second end of the interface J5) to meter the water yield.
Further, as shown in fig. 10, the control circuit for the water control box further includes a display screen electrically connected to the monolithic computer, and the display screen is connected to the monolithic computer through the interface J3, and the display screen is disposed on the outer surface of the water control box, and can display information through the display screen, for example: two-dimensional code, residual flow or days of use, consumption, online recharging, etc.
In fig. 2, a second serial port reading end P1.0 of the singlechip is electrically connected with a resistor R21 and then is connected with a serial port writing end (a first core of an interface J5) of the display screen; the second serial port writing end P1.1 is electrically connected with the resistor R19 and then is connected with the serial port reading end (the second core of the interface J5) of the display screen.
The display screen power-on control circuit is used for powering on the display screen, the display screen power-on control circuit comprises a display power-on control MOS tube Q6, a source electrode of the display power-on control MOS tube Q6 is electrically connected with a third direct current power supply +5V_M, a grid electrode of the display power-on control circuit is electrically connected with a display power-on control end P5.3 of the singlechip in FIG. 2, a drain electrode of the display power-on control circuit is electrically connected with a power end (a fourth core of an interface J5) of the display screen, and a ground end (a third core of the interface J5) of the display screen is grounded.
Preferably, in the display screen power-on control circuit, a grid electrode of the display power-on control MOS tube Q6 is electrically connected with the first display power-on resistor R38 and then connected with the Internet of things power-on control end P5.3 of the singlechip in FIG. 2, and is also electrically connected with the second display power-on resistor R37 and then connected with the third direct-current power supply +5V_M.
When the display screen is normally operated, the singlechip controls the display power-on control MOS tube Q6 to be conducted, so that the third direct current power supply +5V_M can supply power for the display screen, and when the singlechip controls the display power-on control MOS tube Q6 to be cut off, the display screen is disconnected from power supply, and then the singlechip controls the display power-on control MOS tube Q6 to be conducted again, so that the power supply to the display screen is realized, the display screen can be re-electrified, the restarting operation to the display screen is realized, and the use reliability of the display screen is ensured.
Further, as shown in fig. 11, the control circuit for the water control box further comprises an ultraviolet sterilization circuit, wherein the ultraviolet sterilization circuit is electrically connected with an ultraviolet sterilization lamp through an interface J4, and the ultraviolet sterilization lamp is arranged inside the water control box; the ultraviolet sterilization circuit comprises a sterilization control field effect tube Q4, the drain electrode of the sterilization control field effect tube Q4 is electrically connected with the negative electrode (the first end of the interface J4) of the ultraviolet sterilization lamp, and the positive electrode (the second end of the interface J5) of the ultraviolet sterilization lamp is electrically connected with a fourth direct current power supply +24V; the grid electrode of the sterilization control field effect transistor Q4 is electrically connected with the sterilization control resistor and then is electrically connected with the sterilization control end P5.2 of the singlechip in FIG. 2, and the source electrode of the sterilization control field effect transistor Q4 is grounded.
After the sterilization control end P5.2 of the singlechip drives the sterilization control field effect transistor Q7 to be conducted, the negative electrode (the first end of the interface J4) of the ultraviolet disinfection lamp is grounded, and the ultraviolet disinfection lamp is started.
In fig. 2, the sterilization control end P5.2 of the singlechip is also respectively and electrically connected with a resistor R33 and a resistor R34 and then grounded; the drain electrode of the sterilization control field effect transistor Q4 is electrically connected with the positive electrode of the protection diode D7, and the negative electrode of the protection diode D7 is connected with a fourth direct current power supply +24V. A filter capacitor C23 is also connected in series between the anode and the cathode of the protection diode D7.
Further, as shown in fig. 12, the control circuit for the water control box further includes an alarm circuit, the alarm circuit includes a buzzer B1, the positive electrode of the buzzer B1 is electrically connected with a fourth dc power supply +24v, and a resistor R25 is further connected in series between the positive electrode of the buzzer B1 and the fourth dc power supply +24v; the negative electrode of the buzzer B1 is electrically connected with the collector electrode of the alarm control triode Q5, the base electrode of the alarm control triode Q5 is electrically connected with the first alarm voltage dividing resistor R32 and then is electrically connected with the alarm control end P23 of the singlechip in FIG. 2, and the base electrode of the alarm control triode Q5 is also electrically connected with the second alarm voltage dividing resistor R36 and then is grounded. When the internet of things module is powered on successfully, the singlechip controls the alarm control triode Q5 to be conducted, and the buzzer B1 starts alarm prompt.
Preferably, an alarm protection diode D8 is also connected between the positive pole and the negative pole of the buzzer B1.
Further, as shown in fig. 13, the control circuit for the water control box further includes a working indication circuit, the working indication circuit includes a working indication light emitting diode VL2, the positive electrode of the working indication light emitting diode VL2 is electrically connected to the working indication current limiting resistor R27 and then connected to the working indication control end P3.5 of the singlechip in fig. 2, and the negative electrode of the working indication light emitting diode VL2 is grounded.
When the single-chip microcomputer controls the pulse valve to be opened, the working indication light emitting diode VL2 emits light to display, and the water control box is indicated to flow out of the direct drinking water.
Further, as shown in fig. 13, the display device further comprises a networking display circuit, the networking display circuit comprises a networking display light emitting diode VL1, the anode of the networking display light emitting diode VL1 is electrically connected with a networking display current limiting resistor R26 and then connected to a networking display control end P5.1 of the singlechip in fig. 2, and the cathode of the networking display light emitting diode VL1 is grounded. And after the Internet of things module is powered on successfully, the networking display light-emitting diode VL1 emits light to display.
In the present utility model, the operation indication light emitting diode VL2 and the networking display light emitting diode VL1 are provided on the outer surface of the water control box.
Further, as shown in fig. 14, the control circuit for the water control box further includes a power circuit, the power circuit includes a chip XL1509-5V, and an input terminal I N of the chip XL1509-5V inputs a fourth dc power +24v; an output end OUT of the chip XL1509-5V is electrically connected with a filter inductor L1, a first power output diode D2 and a second power output diode D4 in sequence and then outputs a first direct current power VCC_GPRS, and the first direct current power VCC_GPRS is electrically connected with a filter capacitor C10 and then grounded; the electric connection part of the filter inductor L1 and the first power output diode D2 is also connected with a protection resistor F1 and then outputs a second direct current power supply +5V, and the second direct current power supply +5V is respectively and electrically connected with a filter capacitor C4 and a filter capacitor C5 and then grounded; the electric connection part of the filter inductor L1 and the first power output diode D2 is also electrically connected with the third power output diode D1 to output a third direct current power +5V_M, and the third direct current power +5V_M is electrically connected with the filter capacitor C2 and the filter capacitor C6 to be grounded.
It can be seen that the power sources of the first direct current power source vcc_gprs, the second direct current power source +5v and the third direct current power source +5v_m are all +5v, and the three power sources are all mutually independent power sources, which are used for avoiding power supply interference between the modules.
Preferably, the input end I N of the chip XL1509-5V is electrically connected with the thermistor RT1 and then is connected with a fourth direct-current power supply +24V, wherein the fourth direct-current power supply +24V is an external direct-current power supply, and the fourth direct-current power supply is input to the water control box through a power adapter.
Preferably, the fourth dc power supply +24v is further connected with a power-down detection circuit, the power-down detection circuit includes a first power-down detection resistor R1, a second power-down detection resistor R5 and a third power-down detection resistor R3, a first end of the first power-down detection resistor R1 is electrically connected with the fourth dc power supply +24v, a second end of the first power-down detection resistor R1 is electrically connected with the second power-down detection resistor R5 and then grounded, a second end of the first power-down detection resistor R1 is further connected with the third power-down detection resistor R3 and then connected with a power-down detection end P0.0 of the single-chip microcomputer in fig. 2, when the fourth dc power supply +24v exists, the power-down detection end P0.0 of the single-chip microcomputer is in a high level, and when the fourth dc power supply +24v does not exist, the power-down detection end P0.0 of the single-chip microcomputer is in a low level, and whether the fourth dc power supply +24v (external dc power supply) supplies power to the water control box normally can be detected in this manner.
The input end I N of the chip XL1509-5V is electrically connected with the negative electrode of the power input protection diode D6, and the positive electrode of the power input protection diode D6 is grounded; the input terminal I N of the chip XL1509-5V is also electrically connected to the polarity filter capacitor C1 and the filter capacitor C7 and then grounded.
The output end OUT of the chip XL1509-5V is electrically connected with the inductor L1 and then is connected with one end of the protection resistor F2, the other end of the protection resistor F2 outputs a first direct current power supply +5V, and the first direct current power supply +5V is also respectively electrically connected with the filter capacitor C4 and the filter capacitor C5 and then is grounded.
Preferably, the output end OUT of the chip XL1509-5V is further electrically connected with the power output protection diode D5 and then grounded, the electric connection part of the inductor L1 and the first power output diode D2 is further electrically connected with the feedback end FB of the chip XL1509-5V, and the electric connection part of the inductor L1 and the first power output diode D2 is further respectively electrically connected with the filter capacitor C8 and the filter capacitor C9 and then grounded.
The utility model discloses a control circuit for a water control box, which comprises a singlechip, a pulse valve driving circuit and an Internet of things module, wherein the singlechip is electrically connected with the pulse valve driving circuit, the pulse valve driving circuit comprises a driving chip L9110S, a first input end and a second input end of the driving chip L9110S are respectively and correspondingly electrically connected with a first driving control end and a second driving control end of the singlechip, and a first output end and a second output end of the driving chip L9110S are respectively and electrically connected with an anode and a cathode of a pulse valve; the singlechip is also electrically connected with the internet of things module, receives signals from the internet of things module and is used for controlling the opening and closing of the pulse valve. The control circuit for the water control box can enable the water control box to accurately control water outlet and water interruption of direct drinking water entering a user, is convenient for remote control and the like.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the present utility model and the accompanying drawings, or direct or indirect application in other related technical fields, are included in the scope of the present utility model.
Claims (10)
1. A control circuit for a water control box, characterized by: the pulse valve driving circuit comprises a driving chip L9110S, a first input end and a second input end of the driving chip L9110S are respectively and correspondingly electrically connected with a first driving control end and a second driving control end of the single chip, and a first output end and a second output end of the driving chip L9110S are respectively and electrically connected with an anode and a cathode of the pulse valve; the singlechip is also electrically connected with the Internet of things module, receives signals from the Internet of things module and is used for controlling the opening and closing of the pulse valve.
2. The control circuit for a water control cartridge of claim 1, wherein: the internet of things module comprises a chip EC800N and a SIM card, wherein the chip EC800N is electrically connected with the SIM card, and the singlechip is connected with an asynchronous serial port between the chip EC 800N.
3. The control circuit for a water control cartridge of claim 2, wherein: the power-on control circuit of the internet of things is used for powering on the chip EC800N, the power-on control circuit of the internet of things comprises an electric control MOS tube of the internet of things, a source electrode of the electric control MOS tube of the internet of things is electrically connected with a first direct current power supply, a grid electrode of the electric control MOS tube of the internet of things is electrically connected with an electric control end of the internet of things of the singlechip, and a drain electrode of the electric control MOS tube of the internet of things is electrically connected with a power end of the chip EC 800N.
4. The control circuit for a water control cartridge of claim 1, wherein: the flow detection circuit is used for detecting the water yield of the water control box, the flow detection circuit comprises a flowmeter, a power end of the flowmeter is electrically connected with a second direct current power supply, a signal end of the flowmeter is electrically connected with a first flow detection resistor and a second flow detection resistor and then is connected with the second direct current power supply, and an electric connection part of the first flow detection resistor and the second flow detection resistor is electrically connected with a flow sampling end of the singlechip.
5. The control circuit for a water control cartridge of claim 1, wherein: the display screen is electrically connected with the single chip microcomputer.
6. The control circuit for a water control cartridge of claim 2, wherein: the display screen power-on control circuit comprises a display screen power-on control MOS tube, a source electrode of the display screen power-on control MOS tube is electrically connected with a third direct current power supply, a grid electrode is electrically connected with a display screen power-on control end of the singlechip, and a drain electrode is electrically connected with a power end of the display screen.
7. The control circuit for a water control cartridge of claim 1, wherein: the ultraviolet sterilization circuit comprises a sterilization control field effect tube, the drain electrode of the sterilization control field effect tube is electrically connected with the negative electrode of an ultraviolet sterilization lamp, the positive electrode of the ultraviolet sterilization lamp is electrically connected with a fourth direct current power supply, the grid electrode of the sterilization control field effect tube is electrically connected with a sterilization control resistor and then is electrically connected with the sterilization control end of the singlechip, and the source electrode of the sterilization control field effect tube is grounded.
8. The control circuit for a water control cartridge of claim 1, wherein: the alarm circuit comprises a buzzer, the anode of the buzzer is electrically connected with a fourth direct current power supply, the cathode of the buzzer is electrically connected with the collector of an alarm control triode, the base of the alarm control triode is electrically connected with the first alarm voltage dividing resistor and then is electrically connected with the alarm control end of the singlechip, and the base of the alarm control triode is electrically connected with the second alarm voltage dividing resistor and then is grounded.
9. The control circuit for a water control cartridge of claim 1, wherein: the working indication circuit comprises a working indication light emitting diode, wherein the positive electrode of the working indication light emitting diode is electrically connected with a working indication current limiting resistor and then connected with a working indication control end of the singlechip, and the negative electrode of the working indication light emitting diode is grounded.
10. The control circuit for a water control cartridge of claim 1, wherein: the power supply circuit comprises a chip XL1509-5V, wherein the input end of the chip XL1509-5V is input with a fourth direct current power supply, and the output end of the chip XL1509-5V is electrically connected with a filter inductor, a first power supply output diode and a second power supply output diode in sequence and then outputs the first direct current power supply; the electric connection part of the filter inductor and the first power output diode is also connected with a protection resistor and then outputs a second direct current power supply; and the electric connection part of the filter inductor and the first power output diode is also electrically connected with a third power output diode and then outputs a third direct current power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223520975.6U CN219016826U (en) | 2022-12-19 | 2022-12-19 | Control circuit for water control box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223520975.6U CN219016826U (en) | 2022-12-19 | 2022-12-19 | Control circuit for water control box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219016826U true CN219016826U (en) | 2023-05-12 |
Family
ID=86245966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223520975.6U Active CN219016826U (en) | 2022-12-19 | 2022-12-19 | Control circuit for water control box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219016826U (en) |
-
2022
- 2022-12-19 CN CN202223520975.6U patent/CN219016826U/en active Active
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