Whole-house intelligent water control main valve and control method

Abstract

This invention discloses a whole-house intelligent water control main valve and control method, including a valve body bracket, with a valve body main body fixedly installed inside the bracket. One end of the valve body main body is fixedly connected to a valve body inlet flange, and the valve body main body is fixedly connected to an inlet pipe through the valve body inlet flange. The valve body main body is also fixedly connected to an outlet pipe through the valve body outlet flange. This invention achieves early warning of minor leaks 1-1.5 hours in advance, with a leak detection accuracy rate of 98%, and accurate location of major leaks within 2.5 minutes, significantly reducing water waste and property damage risks. Dynamic scenario-based live water control enables on-demand circulation, with an average daily live water consumption of only 14L, a water saving rate of 73%, eliminating ineffective circulation energy consumption, and enabling live water to be available instantly in various water usage scenarios. Dual power supply modes combined with low power consumption design allow the device to last for 3-5 years, and a network outage resumption control mechanism ensures continuous operation of core functions, improving system stability.

Description

Technical Field

[0001] This invention relates to the field of smart home water system control technology, specifically to a whole-house smart water control main valve and control method. Background Technology

[0002] The intelligentization of whole-house water systems is an important development direction for smart homes. As the core component of water system management, the intelligent water control valve directly affects water safety, user experience, and energy consumption control. The advantages of intelligent whole-house water purification systems are mainly reflected in improving ease of use, optimizing maintenance efficiency, and enhancing water quality safety. Combining current technological development trends, the system monitors water quality changes in real time and displays them intuitively through a mobile app or device screen, allowing users to keep track of water safety at any time. When the filter cartridge is nearing the end of its life or the water quality is abnormal, it can automatically push reminders to avoid a decline in purification effect due to filter expiration.

[0003] Existing smart water valve products have many shortcomings in practical applications: (1) Intelligent water valve products can only achieve passive alarm for large leaks through a single water immersion sensor, and cannot detect small leaks and the leak point is difficult to locate; the live water control adopts a fixed time cycle mode, which has invalid cycles, high energy consumption and slow hot water response; (2) The core control function of the smart water valve product fails after the network is interrupted, the standby power consumption of the device is high and the battery life is weak; it lacks linkage adjustment between water quality and water use scenario and cannot meet the diversified health water use needs. (3) Intelligent water valve products do not have hydraulic balance adjustment function, which can easily cause sudden changes in pipeline pressure, water hammer effect and water pressure fluctuation at the water end, affecting the user experience and posing a risk of pipeline damage.

[0004] To address the aforementioned issues, there is an urgent need for a whole-house smart water control main valve that integrates multi-dimensional sensing, intelligent algorithm control, and multi-scenario adaptation to overcome the technical deficiencies of existing products and achieve safe, energy-saving, and intelligent management of water systems. Summary of the Invention

[0005] The purpose of this invention is to provide a whole-house intelligent water control main valve and control method to solve the problems mentioned in the background art. These problems include: intelligent water valve products can only achieve passive alarm for large leaks through a single water immersion sensor, failing to detect minor leaks and making leak location difficult; the use of a fixed-time loop mode for live water control results in ineffective loops, high energy consumption, and slow hot water response; the core control functions of intelligent water valve products fail after network interruption, leading to high standby power consumption and weak battery life; the lack of linkage adjustment between water quality and water usage scenarios fails to meet diverse healthy water usage needs; and the absence of hydraulic balance adjustment functions makes them prone to sudden changes in pipeline pressure, water hammer effect, and water pressure fluctuations at the user end, affecting user experience and posing a risk of pipeline damage.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a whole-house intelligent water control main valve, including a valve body bracket; The valve body is fixedly installed inside the valve body bracket. One end of the valve body is fixedly connected to a valve body inlet flange, and the other end is fixedly connected to a valve body outlet flange. An inlet pipe is fixedly connected to the valve body via the inlet flange, and an outlet pipe is fixedly connected to the valve body via the outlet flange. An electric ball valve is fixedly installed at the center of the top of the valve body. A communication module is fixedly installed on one side of the top of the valve body, and a linkage interface module is fixedly installed on the other side. A power supply module is fixedly installed on one side of the valve body. A main control unit is fixedly installed inside the valve body. A valve body is also fixedly mounted on... The valve body is equipped with an actuator module that is in contact with the electric ball valve, and a sensing module is fixedly installed inside the valve body. The sensing module, actuator module, communication module, power supply module, and linkage interface module are all electrically connected to the main control unit. The sensing module contains an inlet-side differential pressure sensor, an outlet-side differential pressure sensor, a TDS water quality sensor, three contact-type water immersion sensors, an acoustic sensor, and a flow sensor. The actuator module contains an electric ball valve drive mechanism and an audible and visual alarm. The communication module contains a WiFi / Zigbee dual-mode communication unit and a Mesh networking chip. The power supply module contains a lithium battery, a charging management chip, a water kinetic energy harvesting unit, and an energy harvesting unit.

[0007] As a further technical solution of the present invention, the linkage interface module is equipped with 4 RS485 pluggable terminal interfaces and 2 Bluetooth 5.0 wireless linkage interfaces. The RS485 terminal spacing is 2.54mm, which is used to connect to smart devices for water use scenarios. The smart devices for water use scenarios include whole-house branch valves and water purification equipment. The main control unit adopts a microcontroller unit with a built-in edge computing chip, equipped with leakage prediction algorithm, dynamic water flow control algorithm, multimodal data fusion algorithm and hydraulic balance self-tuning algorithm, and has the ability to perform local data processing, logical judgment and control command output. The main control unit is soldered to a custom PCB board, and the PCB board is fixed to the side of the valve body to seal the control cavity with bolts. The circuit connection with each module uses shielded wires, and the shielding layer is grounded.

[0008] As a further technical solution of the present invention, the inside of the valve body inlet flange is fixedly connected to one side of the inlet differential pressure sensor, the inside of the valve body outlet flange is fixedly installed with an outlet differential pressure sensor, the inside of the outlet pipe is fixedly connected to one side of the TDS water quality sensor, the two sides of the bottom end of the valve body and the middle of the bottom end of the valve body are respectively fixedly connected to one side of three contact-type water immersion sensors, the acoustic sensor is fixedly installed on one side of the inlet pipe, and the other side of the inlet pipe is fixedly connected to one side of the flow sensor.

[0009] As a further technical solution of the present invention, one side of the electric ball valve drive mechanism is in contact with the side of the electric ball valve facing it, and one side of the audible and visual alarm is fixedly connected to the side of the valve body facing it. The electric ball valve drive mechanism is connected to the main control unit via an RS485 bus and receives commands to realize the opening, closing and opening degree adjustment of the main valve. The audible and visual alarm is installed on the outer panel of the control cavity and includes a red LED light and an 85dB piezoelectric buzzer.

[0010] As a further technical solution of the present invention, the bottom end of the WiFi / Zigbee dual-mode communication unit and the bottom end of the Mesh networking chip are both fixedly connected to the side of the valve body facing the main body, supporting local Bluetooth communication. The chip antenna is external and set at 45 degrees to the horizontal direction of the valve body. The communication module monitors the network status with a period of 1 second to realize automatic switching of network mode.

[0011] As a further technical solution of the present invention, one side of the water kinetic energy collection unit is fixedly connected to one side of the inner wall of the water inlet pipe, and one side of the energy collection unit and one end of the water kinetic energy collection unit are both fixedly connected to the output end of the charging management chip. The output end of the charging management chip is fixedly connected to the side of the lithium battery facing the lithium battery, and one end of the lithium battery is fixedly connected to the valve body. A dual power supply mode combining the lithium battery and the water kinetic energy collection unit is adopted. The lithium battery consists of two 5000mAh 18650 cells connected in series and encapsulated in an independent sealed chamber. The water kinetic energy collection unit is installed in the water flow channel at the water inlet end of the valve body, with a charging efficiency of 30%. The dual power supply circuit is connected as follows: the output end of the lithium battery pack is connected to the charging management chip, the output end of the energy collection unit is connected to the input end of the charging management chip, and the output end of the charging management chip is connected to the voltage regulator chip. The voltage regulator chip outputs 5V to power the system. The main control unit is configured with an event wake-up mechanism, and the sleep current is 100A in the non-triggered state.

[0012] As a further technical solution of the present invention, a sealing gasket is provided at the connection between the valve body and the valve body inlet flange and at the connection between the valve body and the valve body outlet flange.

[0013] A method for controlling a whole-house smart water control main valve includes the following steps: Step 1: Multi-dimensional data acquisition: The sensing module collects water network flow, pipeline pressure, valve inlet and outlet pressure difference, water flow sound wave, outlet TDS value, and water immersion signal at a time interval of 100ms. The branch valves upload branch pressure data at a time interval of 500ms. Step 2, Leakage Prediction and Detection: The main control unit runs an algorithm to extract data features, identify minute leakage signals and issue warnings. At the same time, it cross-validates sensor data through a multi-modal data fusion algorithm to achieve leak location and rapid valve closure for large leaks. Step 3: Dynamic and scenario-based water circulation control: The main control unit predicts water demand based on the user's water usage habit model and triggers the corresponding area branch valves to circulate water 1-5 minutes before water usage, realizing intelligent switching of branch valves according to the priority of bathing > cooking > washing > watering flowers. Step 4: Resume Control After Network Disconnection and Low-Power Operation: When the network is disconnected, switch to Mesh networking and local Bluetooth mode, enable local preset control logic, and the system enters low-power sleep mode in non-triggered event states. Step 5: Water quality scenario linkage adjustment: Based on the TDS threshold of different water use scenarios, link water purification equipment or rainwater harvesting system to achieve water quality optimization; Step Six: Whole-House Hydraulic Balance Self-Tuning: The main pipeline reference pressure is preset, and the opening of the main valve is adjusted through dynamic differential pressure compensation. Combined with the coordinated adjustment of branch valves, the pressure is kept stable. When water hammer pressure is detected, the pressure is quickly released. In case of abnormality or power supply failure, the system enters a low-power emergency mode, retaining only the core functions of leakage valve closure and emergency shutdown. When the electric ball valve fails, all branch valves are immediately closed.

[0014] As a further technical solution of the present invention, in step three, when the water flow sensor detects a flow rate of 0 for 30 seconds, it is determined that the user's water use has ended, and the branch valves are automatically closed to stop the circulation of fresh water; in step one, all collected data are transmitted to the main control unit at a baud rate of 115200; the whole-house hydraulic balance self-tuning in step six also includes water hammer suppression and multi-branch coordinated adjustment. When the pressure of a branch changes suddenly by 0.04MPa, the main valve adjusts its opening synchronously and sends a coordinated command to other branch valves to fine-tune the branch opening by 5%; when a water hammer pressure of 0.15MPa is detected and cannot be eliminated by adjustment, the emergency shutdown mechanism is triggered to close the main valve.

[0015] As a further technical solution of the present invention, the calculation formula for the estimated value of the fusion state extracted from the data features by the main control unit in step two is as follows: , in It refers to the number of sensors; It is the first The covariance matrix estimated by each sensor, It is the first The estimated state of each sensor.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. Enables early warning of minor leaks 1-1.5 hours in advance, with a leak detection accuracy rate of 98%, and accurately locates major leaks within 2.5 minutes, significantly reducing the risk of water waste and property loss; 2. Dynamic scenario-based water control enables on-demand circulation, with an average daily water consumption of only 14L, a water saving rate of 73%, eliminating ineffective circulation energy consumption, and ensuring that fresh water is available instantly in various water use scenarios; 3. The dual power supply mode combined with the low power consumption design allows the device to last for 3-5 years. The network outage resume control mechanism ensures the continuous operation of core functions and improves the stability of system use. 4. Intelligent water quality adaptation for multiple scenarios: It automatically links the water purification equipment according to different needs such as cooking and bathing to meet the needs of healthy water use, and switches to recycled water source for watering flowers to further save water. 5. The whole-house hydraulic balance self-tuning function controls the pressure fluctuation of the main pipeline within 0.02MPa, effectively suppressing the water hammer effect, solving the water pressure fluctuation problem in multi-story and villa scenarios, and protecting pipes and water-using equipment; 6. The combination of multi-dimensional perception and intelligent algorithms enables automated and intelligent management of water systems without human intervention. It is suitable for various housing types, including homes, villas, and apartments, and is easy to install without the need for professional pipe modifications. Attached Figure Description

[0017] Figure 1 This is a side view of the present invention; Figure 2 This is a schematic diagram of the architecture of the present invention; Figure 3 This is a flowchart of the present invention.

[0018] In the diagram: 1. Valve body; 2. Electric ball valve; 3. Valve body inlet flange; 4. Inlet differential pressure sensor; 5. Valve body outlet flange; 6. Outlet differential pressure sensor; 7. Valve body bracket; 8. Sealing gasket; 9. Inlet pipe; 10. Outlet pipe; 11. TDS water quality sensor; 12. Contact-type water immersion sensor; 13. Acoustic sensor; 14. Flow sensor; 15. Electric ball valve drive mechanism; 16. Audible and visual alarm; 17. Communication module; 18. Linkage interface module; 19. Power supply module; 20. Main control unit; 21. Sensing module; 22. Execution module; 23. WiFi / Zigbee dual-mode communication unit; 24. Mesh networking chip; 25. Lithium battery; 26. Charging management chip; 27. Water kinetic energy harvesting unit; 28. Energy harvesting unit. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1-3 This invention provides a whole-house intelligent water control main valve, including a valve body bracket 7. A valve body 1 is fixedly installed inside the valve body bracket 7. One end of the valve body 1 is fixedly connected to a valve body inlet flange 3, and the other end is fixedly connected to a valve body outlet flange 5. The valve body 1 is fixedly connected to an inlet pipe 9 via the valve body inlet flange 3, and to an outlet pipe 10 via the valve body outlet flange 5. An electric ball valve 2 is fixedly installed at the middle of the top of the valve body 1. A communication module 17 is fixedly installed on one side of the top of the valve body 1, and a linkage interface module 18 is fixedly installed on the other side of the top of the valve body 1. A power supply module 19 is fixedly installed on one side of the valve body 1. A main control unit 20 is fixedly installed inside the valve body 1. A power supply module 20 is fixedly installed on the valve body 1. The ball valve 2 is connected to the execution module 22, and the sensing module 21 is fixedly installed inside the valve body 1. The sensing module 21, execution module 22, communication module 17, power supply module 19 and linkage interface module 18 are all electrically connected to the main control unit 20. The sensing module 21 is equipped with an inlet side differential pressure sensor 4, an outlet side differential pressure sensor 6, a TDS water quality sensor 11, three contact-type water immersion sensors 12, an acoustic sensor 13 and a flow sensor 14. The execution module 22 is equipped with an electric ball valve drive mechanism 15 and an audible and visual alarm 16. The communication module 17 is equipped with a WiFi / Zigbee dual-mode communication unit 23 and a Mesh networking chip 24. The power supply module 19 is equipped with a lithium battery 25, a charging management chip 26, a water kinetic energy harvesting unit 27 and an energy harvesting unit 28.

[0021] In use, the linkage interface module 18 is equipped with 4 RS485 pluggable terminal interfaces and 2 Bluetooth 5.0 wireless linkage interfaces. The RS485 terminal spacing is 2.54mm, which is used to connect to smart devices in the water scenario, including whole-house branch valves and water purification equipment. The main control unit 20 adopts a microcontroller unit with built-in edge computing chip, equipped with leakage prediction algorithm, dynamic water flow control algorithm, multimodal data fusion algorithm and hydraulic balance self-tuning algorithm, and has the ability to perform local data processing, logic judgment and control command output. The main control unit 20 is soldered to a custom PCB board, which is fixed to the side of the valve body and sealed to the control cavity by bolts. The circuit connection with each module uses shielded wires, and the shielding layer is grounded.

[0022] The inside of the valve body inlet flange 3 is fixedly connected to one side of the inlet differential pressure sensor 4. The inside of the valve body outlet flange 5 is fixedly installed with the outlet differential pressure sensor 6. The inside of the outlet pipe 10 is fixedly connected to one side of the TDS water quality sensor 11. The two sides of the bottom end of the valve body 1 and the middle of the bottom end of the valve body 1 are fixedly connected to one side of three contact-type water immersion sensors 12 respectively. The acoustic sensor 13 is fixedly installed on one side of the inlet pipe 9. The other side of the inlet pipe 9 is fixedly connected to one side of the flow sensor 14.

[0023] One side of the electric ball valve drive mechanism 15 is in contact with the side of the electric ball valve 2 facing it, and one side of the audible and visual alarm 16 is fixedly connected to the side of the valve body 1 facing it.

[0024] In use, the electric ball valve drive mechanism 15 is connected to the main control unit 20 via an RS485 bus to receive commands and realize the opening, closing and opening degree adjustment of the main valve; the audible and visual alarm 16 is installed on the outer panel of the control cavity, including a red LED light and an 85dB piezoelectric buzzer.

[0025] The bottom of the WiFi / Zigbee dual-mode communication unit 23 and the bottom of the Mesh networking chip 24 are both fixedly connected to the side of the valve body 1 facing each other.

[0026] When in use, it supports local Bluetooth communication. The chip antenna is external and set at a 45° angle to the horizontal direction of the valve body. The communication module 17 monitors the network status at a 1-second interval to achieve automatic switching of network mode.

[0027] One side of the water kinetic energy harvesting unit 27 is fixedly connected to one side of the inner wall of the water inlet pipe 9. One side of the energy harvesting unit 28 and one end of the water kinetic energy harvesting unit 27 are both fixedly connected to the output end of the charging management chip 26. The output end of the charging management chip 26 is fixedly connected to the side of the lithium battery 25 facing it. One end of the lithium battery 25 is fixedly connected to the valve body 1.

[0028] In use, a dual power supply mode combining lithium battery 25 and water kinetic energy harvesting unit is adopted; lithium battery 25 consists of two 5000mAh 18650 cells connected in series and packaged in an independent sealed chamber; water kinetic energy harvesting unit 27 is installed in the water flow channel at the inlet end of the valve body, with a charging efficiency of 30%; the dual power supply circuit is connected as follows: the output end of lithium battery 25 is connected to charging management chip 26, the output end of energy harvesting unit 28 is connected to the input end of charging management chip 26, the output end of charging management chip 26 is connected to voltage regulator chip, and the voltage regulator chip outputs 5V to power the system; the main control unit 20 is equipped with an event wake-up mechanism, and the sleep current is 100A in non-triggered state.

[0029] Sealing gaskets 8 are fitted at the connection between the valve body 1 and the valve body inlet flange 3, and at the connection between the valve body 1 and the valve body outlet flange 5.

[0030] A method for controlling a whole-house smart water control main valve includes the following steps: Step 1: Multi-dimensional data acquisition: The sensing module 21 collects water network flow, pipeline pressure, valve body inlet and outlet pressure difference, water flow sound wave, outlet TDS value, and water immersion signal at a time interval of 100ms. The branch valves upload branch pressure data at a time interval of 500ms. Step 2, Leakage Prediction and Detection: The main control unit 20 runs an algorithm to extract data features, identify minor leakage signals and issue warnings. At the same time, it cross-validates sensor data through a multi-modal data fusion algorithm to achieve leak location and rapid valve closure for large leaks. Step 3: Dynamic and scenario-based water circulation control: The main control unit 20 predicts water demand based on the user's water usage habit model and triggers the corresponding area branch valves to circulate water 1-5 minutes before water usage, realizing intelligent switching of branch valves according to the priority of bathing > cooking > washing > watering flowers. Step 4: Resume Control After Network Disconnection and Low-Power Operation: When the network is disconnected, switch to Mesh networking and local Bluetooth mode, enable local preset control logic, and the system enters low-power sleep mode in non-triggered event states. Step 5: Water quality scenario linkage adjustment: Based on the TDS threshold of different water use scenarios, link water purification equipment or rainwater harvesting system to achieve water quality optimization; Step Six: Whole-house hydraulic balance self-tuning: The main pipeline reference pressure is preset, and the opening of the main valve is adjusted through dynamic differential pressure compensation. Combined with the branch valves, the pressure is maintained stable. When water hammer pressure is detected, the pressure is quickly released. In case of abnormality or power supply failure, the system enters a low-power emergency mode, retaining only the core functions of leakage valve closure and emergency shutdown. When electric ball valve 2 fails, all branch valves are immediately closed in conjunction.

[0031] In step three, when the water flow sensor detects a flow rate of 0 for 30 seconds, it determines that the user's water usage has ended and automatically closes the branch valves to stop the live water circulation. In step one, all collected data is transmitted to the main control unit 20 at a baud rate of 115200. Step six, the whole-house hydraulic balance self-tuning, also includes water hammer suppression and multi-branch coordinated adjustment. When the pressure of a branch changes suddenly by 0.04MPa, the main valve adjusts its opening synchronously and sends coordinated commands to other branch valves to fine-tune the branch opening by 5%. When a water hammer pressure of 0.15MPa is detected and cannot be eliminated by adjustment, the emergency shutdown mechanism is triggered to close the main valve.

[0032] In step two, the main control unit 20 runs the algorithm to extract data features. The formula for calculating the fusion state estimate is as follows: , in It refers to the number of sensors; It is the first The covariance matrix estimated by each sensor, It is the first The estimated state of each sensor.

[0033] In this invention, the valve body 1 adopts a DN25 brass electric ball valve 2, and the main control unit 20 adopts an STM32H7 series edge computing microcontroller unit. When the shower equipment in the second-floor bathroom is turned on, the main valve detects an increase of 0.08MPa in the inlet and outlet pressure difference and immediately drives the electric ball valve 2 to fine-tune its opening from 100% to 92%. At the same time, it sends a coordinated command to other branch valves. After adjustment, the main pipeline pressure stabilizes at 0.29MPa, with fluctuations of only 0.01MPa. Based on user water usage behavior learning, five minutes before washing at 7:00 AM and showering at 6:00 PM, the corresponding area branch valves are triggered to circulate fresh water. Users can get fresh water immediately upon turning on the valve, and the branch valves are automatically shut off after water usage, with no invalid circulation. Minor leakage characteristics of the third-floor garden pipeline are detected. In case of a simulated large kitchen leak, the main valve closes within 2.8 seconds and locates the leak within 2.3 minutes. During a cooking scenario, when a TDS value of 65ppm is detected, the RO water purifier is immediately activated, reducing the TDS value to 38ppm within 5 minutes. During a watering scenario, the system automatically switches to rainwater recycling, achieving a TDS value of 350ppm, meeting usage requirements. When a network disconnection is simulated, the main valve automatically switches to local mode, and the core functions of leak detection and hydraulic balance adjustment operate normally. All data is automatically synchronized after network recovery. In non-working mode, the device operates at a dormant current of 85A, and the water kinetic energy generation unit continuously charges the lithium battery (25A). A single full charge allows for over 3 years of normal operation without external charging.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A whole-house intelligent water control main valve, including a valve body bracket (7). Its features are: The valve body bracket (7) is fixedly installed inside the valve body body (1). One end of the valve body body (1) is fixedly connected to the valve body inlet flange (3), and the other end of the valve body body (1) is fixedly connected to the valve body outlet flange (5). The valve body body (1) is fixedly connected to the inlet pipe (9) through the valve body inlet flange (3), and the valve body body (1) is fixedly connected to the outlet pipe (10) through the valve body outlet flange (5). An electric ball valve (2) is fixedly installed at the middle of the top of the valve body body (1). A communication module (17) is fixedly installed on one side of the top of the valve body (1), a linkage interface module (18) is fixedly installed on the other side of the top of the valve body (1), a power supply module (19) is fixedly installed on one side of the valve body (1), a main control unit (20) is fixedly installed inside the valve body (1), an execution module (22) that is in contact with the electric ball valve (2) is fixedly installed on the valve body (1), and a sensing module (21) is fixedly installed inside the valve body (1). The sensing module (21), execution module (22), communication module (17), power supply module (19) and linkage interface module (18) are all electrically connected to the main control unit (20); The sensing module (21) is equipped with an inlet side differential pressure sensor (4), an outlet side differential pressure sensor (6), a TDS water quality sensor (11), three contact-type water immersion sensors (12), an acoustic sensor (13) and a flow sensor (14). The execution module (22) is equipped with an electric ball valve drive mechanism (15) and an audible and visual alarm (16). The communication module (17) is equipped with a WiFi / Zigbee dual-mode communication unit (23) and a Mesh networking chip (24). The power supply module (19) includes a lithium battery (25), a charging management chip (26), a water kinetic energy collection unit (27), and an energy collection unit (28).

2. The whole-house intelligent water control main valve according to claim 1, characterized in that: The inside of the valve body inlet flange (3) is fixedly connected to one side of the inlet differential pressure sensor (4). The inside of the valve body outlet flange (5) is fixedly installed with an outlet differential pressure sensor (6). The inside of the outlet pipe (10) is fixedly connected to one side of the TDS water quality sensor (11). The two sides of the bottom end of the valve body (1) and the middle of the bottom end of the valve body (1) are fixedly connected to one side of three contact-type water immersion sensors (12). The acoustic sensor (13) is fixedly installed on one side of the inlet pipe (9). The other side of the inlet pipe (9) is fixedly connected to one side of the flow sensor (14).

3. The whole-house intelligent water control main valve according to claim 1, characterized in that: One side of the electric ball valve drive mechanism (15) is in contact with the side of the electric ball valve (2) facing it, and one side of the audible and visual alarm (16) is fixedly connected to the side of the valve body (1) facing it.

4. The whole-house intelligent water control main valve according to claim 1, characterized in that: The bottom of the WiFi / Zigbee dual-mode communication unit (23) and the bottom of the Mesh networking chip (24) are both fixedly connected to the side of the valve body (1) facing each other.

5. A whole-house intelligent water control main valve according to claim 1, characterized in that: One side of the water kinetic energy collection unit (27) is fixedly connected to one side of the inner wall of the water inlet pipe (9). One side of the energy collection unit (28) and one end of the water kinetic energy collection unit (27) are both fixedly connected to the output end of the charging management chip (26). The output end of the charging management chip (26) is fixedly connected to the side of the lithium battery (25) facing it. One end of the lithium battery (25) is fixedly connected to the valve body (1).

6. A whole-house intelligent water control main valve according to claim 1, characterized in that: Sealing gaskets (8) are provided at the connection between the valve body (1) and the valve body inlet flange (3) and at the connection between the valve body (1) and the valve body outlet flange (5).

7. A control method for a whole-house intelligent water control main valve according to any one of claims 1-6, characterized in that, Includes the following steps: Step 1, Multi-dimensional data acquisition: The sensing module (21) collects water network flow, pipeline pressure, valve body inlet and outlet pressure difference, water flow sound wave, outlet TDS value and water immersion signal with a collection period of 100ms. The branch valve uploads branch pressure data with a period of 500ms. Step 2, Leakage Prediction and Detection: The main control unit (20) runs an algorithm to extract data features, identify small leakage signals and issue warnings, and at the same time cross-validates sensor data through a multimodal data fusion algorithm to realize leak location and rapid valve closure for large leaks; Step 3, Dynamic Scene-based Water Control: The main control unit (20) predicts water demand based on the user's water usage habit model and triggers the corresponding area branch valves to circulate water 1-5 minutes before water usage, and realizes intelligent switching of branch valves according to the priority of bathing > cooking > washing > watering flowers. Step 4: Resume Control After Network Disconnection and Low-Power Operation: When the network is disconnected, switch to Mesh networking and local Bluetooth mode, enable local preset control logic, and the system enters low-power sleep mode in non-triggered event states. Step 5: Water quality scenario linkage adjustment: Based on the TDS threshold of different water use scenarios, link water purification equipment or rainwater harvesting system to achieve water quality optimization; Step 6, whole house hydraulic balance self-tuning: preset the main pipeline reference pressure, adjust the opening of the main valve through dynamic differential pressure compensation, and maintain pressure stability in conjunction with the branch valves. When water hammer pressure is detected, the pressure is quickly released. In case of abnormality, the system enters low power emergency mode when the power supply is abnormal, and only retains the core functions of leakage valve closure and emergency shutdown. When the electric ball valve (2) fails, all branch valves are immediately closed in linkage.

8. The control method for a whole-house intelligent water control main valve according to claim 7, characterized in that: In step three, when the water flow sensor detects a flow rate of 0 for 30 seconds, it is determined that the user's water use has ended, and the branch valves are automatically closed to stop the circulation of fresh water. In step one, all collected data are transmitted to the main control unit (20) at a baud rate of 115200. The whole-house hydraulic balance self-tuning in step six also includes water hammer suppression and multi-branch coordinated adjustment. When the pressure of a branch changes suddenly by 0.04MPa, the main valve adjusts its opening synchronously and sends a coordinated command to other branch valves to fine-tune the branch opening by 5%. When a water hammer pressure of 0.15MPa is detected and cannot be eliminated by adjustment, the emergency shutdown mechanism is triggered to close the main valve.

9. The control method for a whole-house intelligent water control main valve according to claim 7, characterized in that: In step two, the main control unit (20) runs an algorithm to extract data features. The formula for calculating the fusion state estimate is as follows: ， in It refers to the number of sensors; It is the first The covariance matrix estimated by each sensor, It is the first The estimated state of each sensor.

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