Internet of Things intelligent control circuit based on direct drinking water equipment

Abstract

The utility model relates to the technical field of water treatment, in particular to an Internet of Things intelligent control circuit based on direct drinking water equipment, which comprises a start-stop module, a control module and a control module, the data module is used for acquiring pressure sensor data, conductivity data and water flow meter data; the switching module is used for controlling switching of the multifunctional control valve; the alarm module is used for carrying out early warning according to the abnormal signal; and the communication module is used for carrying out information interaction with external equipment. According to the utility model, the automatic control of the overall running state of the equipment is realized through the start-stop module, the water pump start-stop unit and the equipment start-stop unit are included, the water source supply and water quality purification process can be automatically controlled, and the working efficiency and stability of the equipment are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to an Internet of Things intelligent control circuit based on direct drinking water equipment. Background Art

[0002] With the development of social economy and the improvement of people's living standards, the quality requirements for drinking water are increasing. However, the traditional tap water supply system has many problems in water quality treatment technology and secondary water supply process, such as disinfectant residues, secondary pollution caused by aging pipes, etc. These problems directly affect the safety and drinkability of tap water. Therefore, the rise of direct drinking water system has become an inevitable trend. It can provide safer and healthier drinking water, especially suitable for residential areas, schools, office buildings, hospitals and other crowded places.

[0003] The core of the direct drinking water system lies in its water purification and control system. Among them, the water control box, as a key component of the direct drinking water equipment, is responsible for accurately controlling the water production and supply process to ensure that the water quality meets high standards. However, the existing water control box control circuit design still needs to be optimized in terms of function realization and ease of use. For example, some early control circuits may be limited to local operation and lack the ability of remote monitoring and management, which limits the flexibility and intelligence level of the direct drinking water system.

[0004] At present, the common water control box control circuits on the market mainly have the following technical challenges:

[0005] 1. Remote control capability: Existing circuit designs often fail to fully integrate IoT technology and cannot achieve remote monitoring and control, limiting device management efficiency and user experience.

[0006] 2. Accuracy and stability: After running for a long time, some control circuits may have problems with inaccurate control or reduced stability, affecting the normal operation of the direct drinking water system.

[0007] 3. Maintenance and upgrade: Due to the limitations of circuit design, the maintenance and software upgrades of some water control boxes are relatively complicated, increasing operating costs.

[0008] At the same time, the Chinese utility model with the publication number CN219016826U discloses a control circuit for a water control box, including a chip U201, a pulse valve drive circuit and an Internet of Things module. The chip U201 is electrically connected to the pulse valve drive circuit. The pulse valve drive circuit includes a drive chip L9110S. The first input end and the second input end of the drive chip L9110S correspond to the first drive control end and the second drive control end of the electrically connected chip U201, respectively. The first output end and the second output end of the drive chip L9110S are electrically connected to the positive and negative poles of the pulse valve respectively; the chip U201 is also electrically connected to the Internet of Things module, and receives signals from the Internet of Things module to control the opening and closing of the pulse valve. The control circuit for the water control box of the utility model can enable the water control box to accurately control the water output and water cut-off of the direct drinking water entering the household, and facilitate remote control and other water use issues. However, the control circuit of the utility model can only be applied to direct drinking water terminals, and has no water production and supply functions. Utility Model Content

[0009] The purpose of the utility model is to provide an Internet of Things intelligent control circuit based on direct drinking water equipment to solve the problems raised in the above background technology.

[0010] The technical solution of the utility model is: an Internet of Things intelligent control circuit based on direct drinking water equipment, including:

[0011] Start-stop module, used to control the opening and closing of the equipment;

[0012] Data module, used to obtain pressure sensor data, conductivity data and water flow meter data;

[0013] A switching module, used to control the switching of the multifunctional control valve;

[0014] Alarm module, used to issue early warning based on abnormal signals;

[0015] Communication module, used for information exchange with external devices.

[0016] Furthermore, the start-stop module includes:

[0017] Water pump start-stop unit, used to control the start and stop of the three-phase electric water pump;

[0018] Equipment start and stop unit, used to control the opening and closing of solenoid valves and ultraviolet equipment.

[0019] Furthermore, the water pump start-stop unit includes an optical coupler U502, and a port 1 of the optical coupler U502 is electrically connected to the microcontroller M3 through a resistor R516;

[0020] Port 2 of the optical coupler U502 is electrically connected to the collector of the transistor Q501, the base of the transistor Q501 is electrically connected to the PURE PUMP1 AUTO OUT port of the chip U201 through the resistor R515, the emitter of the transistor Q501 is electrically connected to the resistor R515 through the resistor R514, and the resistor R514 and the emitter of the transistor Q501 are both grounded;

[0021] The three ports of the optical coupler U502 are electrically connected to a resistor R530, the resistor R530 is electrically connected to the base of the transistor Q506 and the resistor R529, the resistor R529 is electrically connected to the emitter of the transistor Q506, the collector of the transistor Q506 is electrically connected to the anode of the diode D501, and the emitter of the transistor Q506 and the resistor R529 are both grounded;

[0022] The 4 ports of the optocoupler U502 are electrically connected to the power supply VCC port and the cathode of the diode D501 , while the anode of the diode D501 and the collector of the transistor Q506 are electrically connected to the PURE PUMP1 AUTO OUT1 port of the chip U201 .

[0023] Furthermore, the device start-stop unit includes a chip J506, port 1 of the chip J506 is electrically connected to the power IN port, port 2 of the chip J506 is electrically connected to the SV1 CTRL AC port of the chip U201 through a resistor R509, and port 3 of the chip J506 is grounded.

[0024] Furthermore, the data module includes:

[0025] A first data unit, used to obtain pressure sensor data and conductivity data;

[0026] The second data unit is used to obtain water flow meter data of pulse signal counts.

[0027] Furthermore, the first data unit includes a chip U302A, a port 1 of the chip U302A is electrically connected to a resistor R346 and a resistor R340, the resistor R346 is electrically connected to a capacitor C328 and an ADC123 IN10PRESS-SENSOR4 port of the chip U201, the resistor R340 is electrically connected to a resistor R326 via a resistor R334, and the resistor R326 and the capacitor C328 are both grounded;

[0028] Port 2 of the chip U302A is electrically connected to resistors R332, R334 and R340, and the resistor R332 is electrically connected to the REF 2V5 port of the chip U201 and the capacitor C304 through the resistor R320, and the capacitor C304 is grounded;

[0029] The 3 ports of the chip U302A are electrically connected to capacitor C310, capacitor C316 and resistor R310, the capacitor C310 and capacitor C316 are connected in parallel, the resistor R310 is electrically connected to resistor R304 and the cathode of diode D304, the anode of diode D304 is electrically connected to the PRESS SENSOR4 port of chip U201, and the capacitor C310, capacitor C316 and resistor R304 are all grounded;

[0030] The 8 ports of the chip U302A are electrically connected to capacitor C322, capacitor C323 and inductor FB302. The capacitor C322 and capacitor C323 are connected in parallel to each other and are both grounded. Meanwhile, the inductor FB302 is electrically connected to the power supply AVDD port.

[0031] Furthermore, the second data unit includes a chip J302, port 1 of the chip J302 is electrically connected to the power supply VCC port, port 2 of the chip J302 is grounded, port 3 of the chip J302 is electrically connected to a bidirectional diode D315 and an electromagnet F302, the electromagnet F302 is electrically connected to a TIM1 CH1 PWM PURE FLOW port of the chip U201, and the bidirectional diode D315 is grounded.

[0032] Furthermore, the switching module includes an optocoupler U501, port 1 of the optocoupler U501 is electrically connected to the microcontroller M3 through a resistor R501, port 2 of the optocoupler U501 is electrically connected to the MFCV1 EN port of the chip U201, port 3 of the optocoupler U501 is grounded, port 4 of the optocoupler U501 is electrically connected to a resistor R513 and the MFCV1 ENOUT port of the chip U201, and the resistor R513 is electrically connected to the power supply VCC port.

[0033] Furthermore, the alarm module includes a chip U201, a PB2 port of the chip U201 is grounded through a resistor R201, a VBAT port of the chip U201 is electrically connected to a capacitor C211, a cathode of a diode D200 and a cathode of a diode D201, an anode of the diode D201 is electrically connected to a microcontroller M3, an anode of the diode D200 is electrically connected to a positive electrode of a battery holder, and a negative electrode of the battery holder and capacitor C211 are both grounded, and a BOOT0 port of the chip U201 is grounded through a resistor R200.

[0034] Furthermore, the communication module includes a chip U600A, a port 1 of the chip U600A is electrically connected to a resistor R609 and an emitter of a transistor Q602, the resistor R609 is electrically connected to a base of the transistor Q602 and a resistor R606, and a collector of the transistor Q602 is electrically connected to a resistor R605;

[0035] The 2-port of the chip U600A is electrically connected to the resistor R608 and the anode of the diode D604;

[0036] The 6-port of the chip U600A is electrically connected to the resistor R607 and the anode of the diode D603;

[0037] Port 32 of the chip U600A is electrically connected to port 2 of the chip J604, and ports 1 and 3 of the chip J604 are both grounded;

[0038] Ports 34 and 35 of the chip U600A are electrically connected to capacitors C611, C612 and C613, which are connected in parallel to each other and are grounded.

[0039] The utility model provides an Internet of Things intelligent control circuit based on direct drinking water equipment through improvement, which has the following improvements and advantages compared with the prior art:

[0040] First: The utility model realizes automatic control of the overall operating state of the equipment through the start-stop module, including the water pump start-stop unit and the equipment start-stop unit, which can automatically control the water supply and water purification process, thereby improving the working efficiency and stability of the equipment;

[0041] Second: The data module of the utility model can obtain pressure sensor data, conductivity data and water flow meter data, and perform data analysis through the first data unit and the second data unit, which is convenient for monitoring and management;

[0042] Third: The switching module of the utility model can control the switching of the multifunctional control valve to meet different water demand, increase the flexibility of the equipment, and the alarm module can give early warning according to abnormal signals to remind the operator to deal with the problem in time, thus ensuring the safety and reliability of the equipment;

[0043] Fourthly: the communication module of the utility model can exchange information with external devices and supports 4G and WIFI communications, which can not only realize remote monitoring and control, facilitate the maintenance and management of the equipment, but also enhance the networking capability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The utility model is further explained below in conjunction with the accompanying drawings and embodiments:

[0045] Figure 1 It is a structural block diagram of the utility model Internet of Things intelligent control circuit;

[0046] Figure 2 It is the circuit diagram of the water pump start-stop unit of the utility model;

[0047] Figure 3 It is a circuit diagram of the start-stop unit of the utility model device;

[0048] Figure 4 is a circuit diagram of the first data unit of the utility model;

[0049] Figure 5 is a circuit diagram of the second data unit of the utility model;

[0050] Figure 6 It is a circuit diagram of the switching module of the utility model;

[0051] Figure 7 It is the circuit diagram of the alarm module of the utility model;

[0052] Figure 8 It is a circuit diagram of the communication module of the utility model. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] It should be noted that, in the description of the present invention, the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0055] Furthermore, it should be understood that for the sake of ease of description, the sizes of the various components shown in the drawings are not drawn according to actual proportions. For example, the thickness or width of certain layers may be exaggerated relative to other layers.

[0056] It should be noted that like reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined or described in one drawing, it will not require further detailed discussion and description in the description of the subsequent drawings.

[0057] refer to Figure 1 This embodiment provides an Internet of Things intelligent control circuit based on a direct drinking water device, and the Internet of Things intelligent control circuit includes:

[0058] The start-stop module is used to control the overall operating status of the device, including:

[0059] The water pump start-stop unit uses a three-phase electric water pump to start and stop the water supply by controlling its opening and closing.

[0060] The equipment start-stop unit controls the opening and closing of the solenoid valve and UV equipment to automate the water purification process.

[0061] Data module, used to obtain key parameters for collecting and analyzing equipment, including but not limited to pressure sensor data, conductivity data and water flow meter data. Specifically including:

[0062] The first data unit is used to obtain pressure sensor data and conductivity data. The pressure sensor data is used to monitor the pressure of the water supply pipeline to ensure the stability of the water pressure. The conductivity data is used to detect the conductivity of the water quality and evaluate whether the water quality meets the standards.

[0063] The second data unit is used to obtain the water flow meter data of the pulse signal count, wherein the flow meter data is used to record the water consumption for the convenience of monitoring and management.

[0064] The switching module is used to control the switching of the multi-function control valve to meet different water demand.

[0065] The alarm module is used to issue early warnings based on abnormal signals to remind operators to deal with problems in a timely manner.

[0066] The communication module is used to exchange information with external devices to achieve remote monitoring and control.

[0067] refer to Figure 2In this embodiment, the water pump start-stop unit includes an optocoupler U502, and port 1 of the optocoupler U502 is electrically connected to the microcontroller M3 through a resistor R516. Port 2 of the optocoupler U502 is electrically connected to the collector of the transistor Q501, the base of the transistor Q501 is electrically connected to the PURE PUMP1 AUTO OUT port of the chip U201 through a resistor R515, and the emitter of the transistor Q501 is electrically connected to the resistor R515 through a resistor R514, and the resistor R514 and the emitter of the transistor Q501 are both grounded. Port 3 of the optocoupler U502 is electrically connected to a resistor R530, the resistor R530 is electrically connected to the base of the transistor Q506 and the resistor R529, the resistor R529 is electrically connected to the emitter of the transistor Q506, the collector of the transistor Q506 is electrically connected to the anode of the diode D501, and the emitter of the transistor Q506 and the resistor R529 are both grounded. The 4-port of the optocoupler U502 is electrically connected to the power supply VCC port and the cathode of the diode D501 , while the anode of the diode D501 and the collector of the transistor Q506 are both electrically connected to the PUREPUMP1 AUTO OUT1 port of the chip U201 .

[0068] Specifically, the output IO of chip U201 is the PURE PUMP1 AUTO OUT port. When the port is 1, transistor Q501 is turned on, which will trigger the optocoupler U502 to turn on, and further turn on transistor Q506, and connect the PURE PUMP1 AUTO OUT1 port and the ground. At the same time, the power supply VCC port and the PURE PUMP1 AUTO OUT1 port are electrically connected through an AC contactor driven by a 24V coil. When the PUMP1 AUTO OUT1 port and the ground are connected, the AC contactor is turned on and the water pump of the load is turned on. When the PUMP1 AUTO OUT1 port and the ground are disconnected, the AC contactor is turned off and the water pump of the load is turned off.

[0069] refer to Figure 3 In this embodiment, the device start-stop unit includes a chip J506. Port 1 of the chip J506 is electrically connected to the power IN port, port 2 of the chip J506 is electrically connected to the SV1 CTRL AC port of the chip U201 through a resistor R509, and port 3 of the chip J506 is grounded.

[0070] Specifically, the connection terminal of chip J506 is connected to a high-ground level triggered relay module, and the output IO of chip U201 is the SV1 CTRL AC port. Further, when the SV1 CTRL AC port is 1, the relay is turned on, and the external 220V solenoid valve and ultraviolet device are turned on. When the SV1 CTRL AC port is 0, the relay is turned off, and the external 220V solenoid valve and ultraviolet device are turned off.

[0071] refer to Figure 4 In this embodiment, the first data unit includes a chip U302A. Port 1 of the chip U302A is electrically connected to a resistor R346 and a resistor R340, the resistor R346 is electrically connected to a capacitor C328 and the ADC123 IN10PRESS-SENSOR4 port of the chip U201, the resistor R340 is electrically connected to the resistor R326 through a resistor R334, and the resistor R326 and the capacitor C328 are both grounded. Port 2 of the chip U302A is electrically connected to a resistor R332, a resistor R334, and a resistor R340, the resistor R332 is electrically connected to the REF 2V5 port of the chip U201 and the capacitor C304 through a resistor R320, and the capacitor C304 is grounded. The 3 ports of chip U302A are electrically connected to capacitor C310, capacitor C316 and resistor R310, capacitor C310 and capacitor C316 are connected in parallel, resistor R310 is electrically connected to resistor R304 and the cathode of diode D304, the anode of diode D304 is electrically connected to the PRESS SENSOR4 port of chip U201, and capacitor C310, capacitor C316 and resistor R304 are all grounded. The 8 ports of chip U302A are electrically connected to capacitor C322, capacitor C323 and inductor FB302, capacitor C322 and capacitor C323 are connected in parallel, and capacitor C322 and capacitor C323 are all grounded, and inductor FB302 is electrically connected to the power supply AVDD port.

[0072] Specifically, the 4-20mA signal outputted by the PRESS SENSOR4 port is amplified by the chip U302A and converted into a voltage signal, which enters the chip U201 through the ADC123 IN10 PRESS-SENSOR4 port for collection and processing.

[0073] refer to Figure 5 In this embodiment, the second data unit includes a chip J302. Port 1 of the chip J302 is electrically connected to the power supply VCC port, port 2 of the chip J302 is grounded, port 3 of the chip J302 is electrically connected to a bidirectional diode D315 and an electromagnet F302, the electromagnet F302 is electrically connected to the TIM1 CH1 PWM PURE FLOW port of the chip U201, and the bidirectional diode D315 is grounded.

[0074] Specifically, the water flow meter pulse signal enters the chip U201 through the TIM1 CH1 PWM PURE FLOW port in a wiring manner, and the chip U201 counts and converts it into water flow by using a timer.

[0075] refer to Figure 6In this embodiment, the switching module includes an optocoupler U501. Port 1 of the optocoupler U501 is electrically connected to the microcontroller M3 through a resistor R501, port 2 of the optocoupler U501 is electrically connected to the MFCV1 EN port of the chip U201, port 3 of the optocoupler U501 is grounded, port 4 of the optocoupler U501 is electrically connected to a resistor R513 and the MFCV1 EN OUT port of the chip U201, and the resistor R513 is electrically connected to the power supply VCC port.

[0076] Specifically, the output io of chip U201 is the MFCV1 EN port. Further, when the MFCV1 EN port is 0, the MFCV1 EN OUT port is disconnected, and the multi-function control valve outlet position remains unchanged, which is a water production process. When the MFCV1 EN port is 1, the MFCV1 EN OUT port is grounded and energized, and the multi-function control valve outlet position is switched to another position, which is a flushing process.

[0077] refer to Figure 7 In this embodiment, the alarm module includes a chip U201, a PB2 port of the chip U201 is grounded through a resistor R201, a VBAT port of the chip U201 is electrically connected to a capacitor C211, a cathode of a diode D200 and a cathode of a diode D201, an anode of the diode D201 is electrically connected to a microcontroller M3, an anode of the diode D200 is electrically connected to a positive electrode of a battery holder, and a negative electrode of the battery holder and the capacitor C211 are both grounded, and a BOOT0 port of the chip U201 is grounded through a resistor R200.

[0078] Specifically, the PE2 port to the PE5 port of the chip U201 are all alarm signal outputs. When an alarm is needed, the four IO outputs are sent to the corresponding alarm to generate an alarm.

[0079] refer to Figure 8 In this embodiment, the communication module includes a chip U600A, wherein port 1 of the chip U600A is electrically connected to a resistor R609 and an emitter of a transistor Q602, the resistor R609 is electrically connected to a base of the transistor Q602 and a resistor R606, and the collector of the transistor Q602 is electrically connected to a resistor R605. Port 2 of the chip U600A is electrically connected to a resistor R608 and an anode of a diode D604. Port 6 of the chip U600A is electrically connected to a resistor R607 and an anode of a diode D603. Port 32 of the chip U600A is electrically connected to port 2 of the chip J604, and ports 1 and 3 of the chip J604 are both grounded. Ports 34 and 35 of chip U600A are electrically connected to capacitor C611, capacitor C612, and capacitor C613. Capacitor C611, capacitor C612, and capacitor C613 are connected in parallel to each other, and capacitor C611, capacitor C612, and capacitor C613 are all grounded.

[0080] Specifically, the control circuit integrates a 4G module and connects to the wifi module through the PC10 port and PC11 port of the chip U201, thereby realizing the Internet of Things and communication functions.

[0081] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An Internet of Things intelligent control circuit based on direct drinking water equipment, characterized in that: Included are: Start-stop module, used to control the opening and closing of the equipment; Data module, used to obtain pressure sensor data, conductivity data and water flow meter data; A switching module, used to control the switching of the multifunctional control valve; Alarm module, used to issue early warning based on abnormal signals; Communication module, used for information exchange with external devices.

2. According to claim 1, an Internet of Things intelligent control circuit based on direct drinking water equipment is characterized in that: The start-stop module includes: Water pump start-stop unit, used to control the start and stop of the three-phase electric water pump; Equipment start and stop unit, used to control the opening and closing of solenoid valves and ultraviolet equipment.

3. According to claim 2, an Internet of Things intelligent control circuit based on direct drinking water equipment is characterized in that: The water pump start-stop unit includes an optical coupler U502, and a port 1 of the optical coupler U502 is electrically connected to the microcontroller M3 via a resistor R516; Port 2 of the optical coupler U502 is electrically connected to the collector of the transistor Q501, the base of the transistor Q501 is electrically connected to the PURE PUMP1 AUTO OUT port of the chip U201 through the resistor R515, the emitter of the transistor Q501 is electrically connected to the resistor R515 through the resistor R514, and the resistor R514 and the emitter of the transistor Q501 are both grounded; The three ports of the optical coupler U502 are electrically connected to a resistor R530, the resistor R530 is electrically connected to the base of the transistor Q506 and the resistor R529, the resistor R529 is electrically connected to the emitter of the transistor Q506, the collector of the transistor Q506 is electrically connected to the anode of the diode D501, and the emitter of the transistor Q506 and the resistor R529 are both grounded; The 4 ports of the optocoupler U502 are electrically connected to the power supply VCC port and the cathode of the diode D501 , while the anode of the diode D501 and the collector of the transistor Q506 are electrically connected to the PURE PUMP1 AUTO OUT1 port of the chip U201 .

4. According to claim 2, an Internet of Things intelligent control circuit based on direct drinking water equipment is characterized in that: The device start-stop unit includes a chip J506, port 1 of the chip J506 is electrically connected to the power IN port, port 2 of the chip J506 is electrically connected to the SV1 CTRL AC port of the chip U201 through a resistor R509, and port 3 of the chip J506 is grounded.

5. According to claim 1, an Internet of Things intelligent control circuit based on direct drinking water equipment is characterized in that: The data module includes: A first data unit, used to obtain pressure sensor data and conductivity data; The second data unit is used to obtain water flow meter data of pulse signal counts.

6. According to claim 5, an Internet of Things intelligent control circuit based on direct drinking water equipment is characterized in that: The first data unit includes a chip U302A, a port 1 of the chip U302A is electrically connected to a resistor R346 and a resistor R340, the resistor R346 is electrically connected to a capacitor C328 and an ADC123 IN10 PRESS-SENSOR4 port of the chip U201, the resistor R340 is electrically connected to a resistor R326 via a resistor R334, and the resistor R326 and the capacitor C328 are both grounded; Port 2 of the chip U302A is electrically connected to resistors R332, R334 and R340, and the resistor R332 is electrically connected to the REF 2V5 port of the chip U201 and the capacitor C304 through the resistor R320, and the capacitor C304 is grounded; The 3 ports of the chip U302A are electrically connected to capacitor C310, capacitor C316 and resistor R310, the capacitor C310 and capacitor C316 are connected in parallel, the resistor R310 is electrically connected to resistor R304 and the cathode of diode D304, the anode of diode D304 is electrically connected to the PRESS SENSOR4 port of chip U201, and the capacitor C310, capacitor C316 and resistor R304 are all grounded; The 8 ports of the chip U302A are electrically connected to capacitor C322, capacitor C323 and inductor FB302. The capacitor C322 and capacitor C323 are connected in parallel to each other and are both grounded. Meanwhile, the inductor FB302 is electrically connected to the power supply AVDD port.

7. According to claim 5, an Internet of Things intelligent control circuit based on direct drinking water equipment is characterized in that: The second data unit includes a chip J302, port 1 of the chip J302 is electrically connected to the power supply VCC port, port 2 of the chip J302 is grounded, port 3 of the chip J302 is electrically connected to a bidirectional diode D315 and an electromagnet F302, the electromagnet F302 is electrically connected to a TIM1 CH1 PWM PURE FLOW port of the chip U201, and the bidirectional diode D315 is grounded.

8. According to claim 1, an Internet of Things intelligent control circuit based on direct drinking water equipment is characterized in that: The switching module includes an optocoupler U501, port 1 of the optocoupler U501 is electrically connected to the microcontroller M3 through a resistor R501, port 2 of the optocoupler U501 is electrically connected to the MFCV1 EN port of the chip U201, port 3 of the optocoupler U501 is grounded, port 4 of the optocoupler U501 is electrically connected to a resistor R513 and the MFCV1 EN OUT port of the chip U201, and the resistor R513 is electrically connected to the power supply VCC port.

9. The IoT intelligent control circuit based on direct drinking water equipment according to claim 1 is characterized in that: The alarm module includes a chip U201, a PB2 port of the chip U201 is grounded through a resistor R201, a VBAT port of the chip U201 is electrically connected to a capacitor C211, a cathode of a diode D200 and a cathode of a diode D201, an anode of the diode D201 is electrically connected to a microcontroller M3, an anode of the diode D200 is electrically connected to a positive electrode of a battery holder, and a negative electrode of the battery holder and capacitor C211 are both grounded, and a BOOT0 port of the chip U201 is grounded through a resistor R200.

10. The IoT intelligent control circuit based on direct drinking water equipment according to claim 1 is characterized in that: The communication module includes a chip U600A, a port 1 of the chip U600A is electrically connected to a resistor R609 and an emitter of a transistor Q602, the resistor R609 is electrically connected to a base of the transistor Q602 and a resistor R606, and a collector of the transistor Q602 is electrically connected to a resistor R605; The 2-port of the chip U600A is electrically connected to the resistor R608 and the anode of the diode D604; The 6-port of the chip U600A is electrically connected to the resistor R607 and the anode of the diode D603; Port 32 of the chip U600A is electrically connected to port 2 of the chip J604, and ports 1 and 3 of the chip J604 are both grounded; Ports 34 and 35 of the chip U600A are electrically connected to capacitors C611, C612 and C613, which are connected in parallel to each other and are grounded.

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