College water-saving equipment central control system based on digital twinning

Abstract

The invention relates to the technical field of water-saving equipment central control. The invention relates to a college water-saving equipment central control system based on digital twinning, and the system comprises a data collection unit which is used for collecting the related data of a college water supply system, teaching building water equipment and teaching building water-saving equipment, and then collecting the building layout data of a teaching building; the water consumption area generation unit is used for creating a digital twin model according to the data collected by the data collection unit, and performing water consumption area division on water consumption equipment according to different installation positions in the digital twin model; sensors are widely installed on a college water supply system, teaching building water consumption equipment and water-saving equipment, water source, water transmission and distribution pipe networks and water consumption detail data such as pipe network flow, flushing amount, hand washing water consumption and the like in different time periods are collected in real time, and the water-saving equipment is accurately regulated and controlled in combination with access control opening time, building layout and work and rest rules of teachers and students of the college.

Description

Technical Field

[0001] The present invention relates to the technical field of central control of water-saving equipment, and in particular to a central control system of water-saving equipment in universities based on digital twins. Background Art

[0002] As a place with a large number of people, colleges and universities have a large demand for water, and water resource management is crucial. The main way to achieve a certain water-saving goal is to install simple water-saving devices, such as water-saving faucets and low-water toilets. The function of these water-saving devices is to reduce the flow rate of single water use, thereby reducing the overall water consumption.

[0003] At present, the effect of this traditional method is relatively limited. It can only achieve local and extensive water-saving, and cannot comprehensively and accurately manage the water resources of colleges and universities. There is a lack of real-time monitoring and analysis of water use data, and it is impossible to accurately grasp the water use situation in each area. It is difficult to carry out targeted water-saving regulation. In order to reduce this situation, a central control system for college water-saving equipment based on digital twins is proposed. Summary of the invention

[0004] The purpose of the present invention is to provide a central control system for university water-saving equipment based on digital twins to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, a central control system for water-saving equipment in colleges and universities based on digital twins is provided, including a data collection unit, a water use area generation unit, a component flushing unit, a flushing management unit, and a fault setting unit; The data collection unit is used to collect relevant data of the university water supply system, water-using equipment in the teaching building and water-saving equipment in the teaching building, and then collect architectural layout data of the teaching building; The water use area generation unit is used to create a digital twin model based on the data collected by the data collection unit, in which the water use equipment is divided into water use areas according to different installation locations, and the corresponding water-saving equipment is assigned according to the water use areas; The component flushing unit is used to obtain the school's access control time and opening time. When the real time is after the access control time, the water-using equipment is controlled by the water-saving equipment to perform component flushing according to the historical water flow data of the water distribution network and the water-using equipment, and the water flow data and water supply data fed back from each water-using area are collected in the digital twin model; The flushing management unit is used to combine the water flow data and water supply data of the same water-using area to perform foreign body obstruction analysis. When the analysis result shows that there is foreign body obstruction, the water-saving device is controlled to improve the water supply efficiency of the water-using area and reset the flushing times. The fault setting unit is used to analyze the water flow fluctuation trend of the water flow data of the water use area where the flushing times are reset, and mark the water use area for faults according to the analysis results.

[0006] As a further improvement of this technical solution, the data collection unit is connected to the digital twin system management terminal through the Internet of Things, and sensors are installed on the water supply system of the university, the water equipment and water-saving equipment of the teaching building, and the sensors are used to receive real-time data and control data through the campus network; Water-using equipment includes toilet facilities, defecation facilities and hand washing facilities.

[0007] As a further improvement of the present technical solution, the data collection unit obtains the architectural layout data of the teaching building by extracting the architectural data of the teaching building at the school management end, and simultaneously obtains the water flow connection structure data between each water-using device and water-saving device based on the architectural layout data.

[0008] As a further improvement of the technical solution, the water use area generation unit includes a model building module and an area division module; The model building module is used to create a digital twin model for the university water supply system and teaching building based on the water flow connection structure data, building layout data and relevant data fed back by sensors, and inject subsequent data into the digital twin model in real time to drive the dynamic update of the model; The area division module is used to divide the water-using equipment into water-using areas according to different installation locations in the digital twin model, and then assign the water-saving equipment responsible for water supply in the water-using area to the same area.

[0009] As a further improvement of the technical solution, the component flushing unit includes a time acquisition module, a flushing control module, and a flushing feedback module; The time acquisition module is used to obtain the school's access control time and opening time through the school management terminal; The flushing control module is used to set a historical interception period according to the number of times the water-using equipment is used on that day, and then intercept the flushing times of the toilet equipment and the hand-washing equipment in the water-using area according to the historical interception period, and then compare the flushing times of the toilet equipment and the hand-washing equipment. When the flushing times of the hand-washing equipment are greater than the flushing times of the toilet equipment, the flushing amount of the water-using area is reduced and controlled. On the contrary, when the flushing times of the hand-washing equipment are less than the flushing times of the toilet equipment, the flushing amount of the water-using area remains unchanged. The flushing feedback module is used to control each water-using area to flush according to the corresponding flushing volume through the water-saving device, and supply the same amount of water at the same time, and then collect the water flow data fed back by each water-using area after the flushing is controlled by the water-saving device in the digital twin model.

[0010] As a further improvement of the technical solution, the more times the water-using equipment is used on the day in the flushing control module, the shorter the time of the historical interception period is; conversely, the fewer times the water-using equipment is used on the day, the longer the time of the historical interception period is; At the same time, when the flushing volume of the water-using area is reduced and controlled, the water-saving device only controls one-third of the water flowing out of the water tank of the water-using device.

[0011] As a further improvement of the technical solution, the flushing management unit includes a foreign body blocking analysis module and a flushing reset module; The foreign matter blocking analysis module is used to perform foreign matter-free flow analysis according to the flushing volume corresponding to each water-using area, and obtain foreign matter-free water flow data corresponding to each water-using area; The flushing reset module is used to analyze the foreign object obstruction between the foreign object-free water flow data and the real-time water flow data of the water-using area. When the real-time water flow data and the foreign object-free water flow data are different, it is determined that the water-using area is blocked by foreign objects, and the water-saving equipment is controlled to improve the water supply efficiency of the water-using area and reset the flushing times. When the water tank is fully filled with water, flushing is performed again. Conversely, when the real-time water flow data and the foreign object-free water flow data are the same, the water-saving equipment is controlled to stop supplying water to the water-using area.

[0012] As a further improvement of the technical solution, when the real time reaches the opening time of the school, the flushing management unit controls the water-saving device to resume water supply to the water-using area.

[0013] As a further improvement of the technical solution, the fault setting unit includes a water flow fluctuation analysis module and a fault marking module; The water flow fluctuation analysis module is used to obtain the historical water flow data of the water supply and water use area where the flushing times are reset by the flushing reset module, and then perform water flow fluctuation trend analysis on the historical water flow data; The fault marking module is used to set a difference threshold based on the water flow data of the first flushing combined with the water flow data without foreign objects, and then compare the water flow fluctuation trend between the difference threshold and the historical water flow data. When the water flow fluctuation trend is less than the difference threshold, the flushing operation is stopped and the water use area is marked as a fault at the school management end. Conversely, when the water flow fluctuation trend is greater than the difference threshold, the flushing operation is continued.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In this central control system of water-saving equipment in colleges and universities based on digital twins, sensors are widely installed on water-using equipment and water-saving equipment in teaching buildings to collect detailed water usage data in real time, such as flushing volume and hand-washing water volume in different periods of time. In combination with the school's access control opening hours, building layout, and the work and rest patterns of teachers and students, water-saving equipment can be accurately controlled to automatically reduce water supply pressure and flushing volume in the late night or holidays when there are few people, avoid unnecessary waste of water resources, and achieve refined water management. Compared with traditional extensive water supply, the water saving rate can be greatly improved.

[0015] 2. In this central control system of water-saving equipment in colleges and universities based on digital twins, the water use areas are accurately divided based on the digital twin model, and the water supply and water-saving equipment are reasonably attributed. The water supply can be dynamically adjusted according to the actual water demand of each area, and the water supply can be prioritized for high-flow areas according to the frequency of use of water facilities on different floors and in different directions. The flow is appropriately limited in low-flow areas, the average pressure of the pipeline network is reduced, the pressure fluctuation is reduced, the invalid head is reduced, the energy consumption is reduced, the health of water supply facilities is guaranteed, and the service life of equipment is extended; it can accurately simulate the water use situation in actual scenarios, and realize the refined management and damage prediction of water-using equipment by monitoring and analyzing water use data, so as to improve water use efficiency, reduce waste, and promote sustainable development.

[0016] 3. In the central control system of water-saving equipment in universities based on digital twins, the operating status of the actual equipment is reflected in real time through the digital twin model. Once the equipment fails, such as pipe leakage, valve blockage, water pump abnormality, etc., the problem can be quickly detected through abnormal fluctuations in sensor feedback data, and the fault point can be quickly located. Maintenance personnel are dispatched in time to deal with it, which greatly shortens the troubleshooting and repair time, reduces the loss of water resources caused by equipment failure and the impact on normal water use on campus. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the overall structural principle diagram of the present invention.

[0018] The meaning of each number in the figure is: 10. Data collection unit; 20. Water use area generation unit; 30. Component flushing unit; 40. Flushing management unit; 50. Fault setting unit. DETAILED DESCRIPTION

[0019] 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.

[0020] See also Figure 1 As shown, the purpose of this embodiment is to provide a central control system for water-saving equipment in colleges and universities based on digital twins, including a data collection unit 10, a water use area generation unit 20, a component flushing unit 30, a flushing management unit 40 and a fault setting unit 50; The data collection unit 10 is used to collect relevant data of the university water supply system, the water-using equipment of the teaching building and the water-saving equipment of the teaching building, and then collect the architectural layout data of the teaching building; The data collection unit 10 is connected to the school management terminal through the campus network, and sensors are installed on the water supply system of the university, the water equipment and water-saving equipment of the teaching building, and the sensors receive and control real-time data through the campus network; Water-using equipment includes toilet facilities, defecation facilities and hand washing facilities.

[0021] In the present invention, for the convenience of management, DMA zoning is adopted within the campus for division management. DMA zoning is to divide the pipe network into several relatively independent areas, so as to realize continuous monitoring of the flow and pressure of each area and improve the leakage control means. On the basis of DMA zoning, advanced technologies such as the Internet of Things and sensors are integrated, and with the help of wireless communication technology and cloud servers, the actual water supply system is digitized, and real-time information collection and construction of the water supply network ecological model are realized. The system uses digital twin technology to create a virtual reality model, which can accurately simulate the water use situation in actual scenes. By monitoring and analyzing water use data, it can realize the refined management and damage prediction of water use equipment, so as to improve water use efficiency, reduce waste and promote sustainable development. The system integrates all aspects of water use detection, metering, statistics, analysis and early warning, which can predict abnormal water use in advance and deal with it in time, so as to achieve the goal of water saving.

[0022] 1. Comprehensively monitor water sources, water distribution networks, and user water use behaviors, and understand the real-time operation of the network. Provide comprehensive and timely data support for system operation and management, and identify problems in a timely manner and take corresponding measures.

[0023] 2. Carry out real-time monitoring and early warning of the entire water supply system, and use real-time monitoring technology throughout the operation and maintenance process to improve efficiency and accuracy.

[0024] 3. When an emergency occurs in the water supply system, the system can provide the affected area, zoning cut-off plan, stress handling plan, etc., so that managers can take timely measures to ensure the continuity and stability of water supply.

[0025] 4. Analyze and mine data to predict future water supply demand and water supply capacity; thereby improving the operating efficiency of the water supply system, optimizing the water supply plan, and reducing the waste of resources.

[0026] According to the layout and quantity of water-using facilities and water-saving equipment such as toilets, wash basins, and mop pools in teaching buildings, select appropriate sensor types, such as turbine flow meters for measuring water flow, proximity switch sensors for monitoring the start and stop status of equipment, and conductivity sensors for detecting water quality. At the same time, select stable and reliable campus network communication protocols and equipment with bandwidth that meets requirements to ensure smooth data transmission; After the sensor is started, it continuously collects water consumption, water flow rate, water quality conditions, and operating parameters of water-saving equipment according to the set sampling frequency, and uses the campus network to wirelessly transmit the collected raw data to the school management end.

[0027] The data collection unit 10 extracts the architectural data of the teaching building at the school management end to obtain the architectural layout data of the teaching building, and simultaneously obtains the water flow connection structure data between each water-using device and water-saving device according to the architectural layout data.

[0028] The water use area generation unit 20 is used to create a digital twin model based on the data collected by the data collection unit 10, in which the water use equipment is divided into water use areas according to different installation locations, and the corresponding water-saving equipment is assigned according to the water use areas; The water use area generation unit 20 includes a model building module and an area division module; The model building module is used to create a digital twin model for the university water supply system and teaching building based on the water flow connection structure data, building layout data and relevant data fed back by sensors, and inject subsequent data into the digital twin model in real time to drive the dynamic update of the model; Use professional modeling software, such as Unity3D or Bentley Systems' ContextCapture, to create a three-dimensional exterior model of the teaching building based on the building layout data, accurately presenting the building's outline, floor distribution, wall door and window locations, etc. On this basis, "embed" the water supply and drainage network inside the model according to the water flow connection structure data, accurately depict the pipeline direction, pipe diameter changes, valve locations, and visualize the potential flow path of water in the teaching building; After receiving new sensor data, the update program is started immediately. Based on the key information carried by the data, such as the device identification and timestamp, the corresponding device or regional node in the digital twin model is accurately located, the new data replaces the old data, and the corresponding components in the drive model are changed.

[0029] The area division module is used to divide the water-using equipment into water-using areas according to different installation locations in the digital twin model, and then assign the water-saving equipment responsible for water supply in the water-using area to the same area. The specific steps are as follows: Data extraction and organization: From the constructed digital twin model and the corresponding database, the detailed installation location information of the water-using equipment is accurately extracted, including the floor, room number, plane coordinates, etc. At the same time, the connection relationship of the water supply and water-saving equipment, the pipe network layout and other data are extracted; Preliminary division of water use areas: Based on the architectural structural characteristics of the teaching building, such as floor distribution and corridor orientation, combined with the actual layout of water use equipment, cluster analysis method is used to divide the areas; Determination of the ownership of water-saving equipment in the same area: Based on the water flow connection structure data, trace the water supply source of each water-using area, search backward along the water supply network, determine the water-saving equipment responsible for the water supply in the area, including smart valves, variable frequency water pumps, etc., check the network design drawings or use the network information in the digital twin model to identify all the connecting pipes from the outlet of the water-saving equipment to the water inlet of the water-using area, and establish the ownership relationship between the corresponding water-saving equipment and the water-using area. The formula is as follows:

[0030] The two water-using devices are A (x1, y1, z1) and B (x2, y2, z2), and the distance threshold is set to D. When d AB When ≤D, the two water-using equipment are divided into the same area.

[0031] The component flushing unit 30 is used to obtain the access control time and opening time of the school. When the real time is after the access control time, the water-using equipment is controlled by the water-saving equipment to perform component flushing according to the historical water flow data of the water distribution network and the water-using equipment, and the water flow data and water supply data fed back from each water-using area are collected in the digital twin model; The component flushing unit 30 includes a time acquisition module, a flushing control module, and a flushing feedback module; The time acquisition module is used to obtain the school's access control time and opening time through the school management terminal; The flushing control module is used to set a historical interception period according to the number of times the water-using equipment is used on that day, and then intercept the flushing times of the toilet equipment and the hand-washing equipment in the water-using area according to the historical interception period, and then compare the flushing times of the toilet equipment and the hand-washing equipment. When the flushing times of the hand-washing equipment are greater than the flushing times of the toilet equipment, the flushing amount of the water-using area is reduced and controlled. On the contrary, when the flushing times of the hand-washing equipment are less than the flushing times of the toilet equipment, the flushing amount of the water-using area remains unchanged. The more times the water-using equipment is used on the day in the flushing control module, the shorter the time of the historical interception period is; conversely, the fewer times the water-using equipment is used on the day, the longer the time of the historical interception period is; At the same time, when the flushing volume of the water-using area is reduced and controlled, the water-saving device only controls the water-using equipment to flow out of the water storage tank by one-third. The specific steps are as follows: Obtain the number of times the water-using equipment is used on the day: The number of times the equipment is started in each water-using area on the day is recorded in real time through sensors deployed on the water-using equipment, which is used as the number of times the water-using equipment is used on the day; Determine the historical interception period: pre-set a basic historical period length range, for example, the shortest is 1 hour and the longest is 24 hours, and dynamically adjust the historical interception period according to the number of times the water-using equipment is used on that day. The formula is as follows:

[0032] Among them, N is the number of times used on the day, N max is the maximum usage threshold, N min is the minimum usage threshold, T is the historical interception period, T max is the longest historical interception period, T min is the shortest historical interception period. According to this formula, the more times it is used on a day, the smaller T is, and the fewer times it is used on a day, the larger T is; Extract historical water use data: Based on the determined historical extraction period, query and extract the flushing times of toilets and toilets and hand washing equipment in the water use area in the corresponding time period from the database; Quantity comparison and decision-making: In the central control system, the flushing times of toilets and urinals and the flushing times of hand washing equipment are compared. If the flushing times of hand washing equipment are greater than those of toilets and urinals, it means that the hand washing equipment is used relatively frequently. At this time, a control instruction is generated to reduce the flushing volume of the water use area; if the flushing times of hand washing equipment are less than those of toilets and urinals, that is, the proportion of toilets and urinals used is high or the same, the flushing volume remains unchanged; Flushing volume control execution: When the flushing volume needs to be reduced, the central control system sends a command to the water-saving device responsible for supplying water to the water-using area. After receiving the command, the water-saving device only controls the water-using device to flow out of the water tank by one-third, and achieves precise water control by adjusting the valve opening, water pump flow, etc.

[0033] The flushing feedback module is used to control each water-using area to flush according to the corresponding flushing volume through the water-saving device, and supply the same amount of water at the same time, and then collect the water flow data fed back by each water-using area after the flushing is controlled by the water-saving device in the digital twin model.

[0034] The flushing management unit 40 is used to combine the water flow data and water supply data of the same water-using area to perform foreign body obstruction analysis. When the analysis result shows that there is foreign body obstruction, the water-saving device is controlled to improve the water supply efficiency of the water-using area and reset the flushing times. The flushing management unit 40 includes a foreign body blocking analysis module and a flushing reset module; The foreign body blocking analysis module is used to perform foreign body free flow analysis according to the flushing volume corresponding to each water use area, and obtain foreign body free water flow data corresponding to each water use area. The formula is as follows:

[0035] Among them, t is the time independent variable, v0 is the peak value of the water flow velocity at the beginning of flushing, k is the attenuation coefficient, which is obtained by fitting a large amount of flushing data without foreign objects, v(t) represents the water flow velocity at time t, which is a variable that changes with time, and e is a natural constant used to describe the attenuation law of water flow velocity over time.

[0036] The flushing reset module is used to analyze the foreign object obstruction between the foreign object-free water flow data and the real-time water flow data of the water-using area. When the real-time water flow data and the foreign object-free water flow data are different, it is determined that the water-using area is blocked by foreign objects, and the water-saving equipment is controlled to improve the water supply efficiency of the water-using area and reset the flushing times. When the water tank is fully filled with water, flushing is performed again. Conversely, when the real-time water flow data and the foreign object-free water flow data are the same, the water-saving equipment is controlled to stop supplying water to the water-using area.

[0037] The water-saving device sends a water supply stop instruction to avoid unnecessary waste of water resources. The water-saving device closes the water supply valve or reduces the water pump operation frequency to the lowest standby state, waiting for the next flushing demand to be triggered.

[0038] When the real time reaches the opening time of the school, the flushing management unit 40 controls the water-saving device to resume supplying water to the water-using area.

[0039] After receiving the water supply restoration instruction, the water-saving device immediately responds. Taking the smart valve as an example, its internal control chip parses the instruction and drives the motor to rotate according to the opening requirement in the instruction, so that the valve opens to the set opening, realizing the opening of the water supply passage. The water flows into the water supply network according to the set initial flow rate and flows to the water use area.

[0040] The fault setting unit 50 is used to analyze the water flow fluctuation trend of the water flow data of the water use area for resetting the flushing times, and mark the water use area for faults according to the analysis results.

[0041] The fault setting unit 50 includes a water flow fluctuation analysis module and a fault marking module; The water flow fluctuation analysis module is used to obtain the historical water flow data of the water supply and water use area where the flushing times are reset by the flushing reset module, and then perform water flow fluctuation trend analysis on the historical water flow data; The fault marking module is used to set a difference threshold based on the water flow data of the first flushing combined with the water flow data without foreign objects, and then compare the water flow fluctuation trend between the difference threshold and the historical water flow data. When the water flow fluctuation trend is less than the difference threshold, the flushing operation is stopped and the water use area is marked as a fault at the school management end. On the contrary, when the water flow fluctuation trend is greater than the difference threshold, the flushing operation is continued. The formula is as follows:

[0042] Among them, v n is the mean water flow velocity without foreign matter, v1 is the water flow velocity for the first flush, k is the difference threshold coefficient, T v is the water velocity difference threshold;

[0043] Among them, q n is the mean flow rate without foreign matter, q1 is the first flushing flow rate, k is the difference threshold coefficient, T q is the flow difference threshold;

[0044] Among them, p n is the average water pressure without foreign matter, p1 is the first flushing water pressure, k is the difference threshold coefficient, T p is the water pressure difference threshold; For the water flow velocity fluctuation trend, if the fluctuation amplitude is always less than T in the subsequent flushing process, v , and the flow fluctuation amplitude is less than T q , the water pressure fluctuation amplitude is less than T p , that is, it is determined that the overall water flow fluctuation trend is less than the difference threshold. At this time, it is determined that the flushing operation cannot effectively improve the water flow condition. It is determined that there may be an equipment failure. The flushing operation is stopped immediately, and a fault marking instruction is sent to the school management end. The marking information includes the location of the water use area.

[0045] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A central control system for water-saving equipment in colleges and universities based on digital twins, characterized by: It comprises a data collection unit (10), a water use area generation unit (20), a component flushing unit (30), a flushing management unit (40) and a fault setting unit (50); The data collection unit (10) is used to collect relevant data on the university water supply system, water-using equipment in teaching buildings, and water-saving equipment in teaching buildings, and then collect architectural layout data of the teaching buildings; The water use area generation unit (20) is used to create a digital twin model based on the data collected by the data collection unit (10), in which water use equipment is divided into water use areas according to different installation locations, and corresponding water-saving equipment is assigned according to the water use areas; The component flushing unit (30) is used to obtain the access control time and opening time of the school. When the real time is after the access control time, the water-using equipment is controlled to perform component flushing through the water-saving equipment according to the historical water flow data of the water supply and distribution network and the water-using equipment, and the water flow data and water supply data fed back from each water-using area are collected in the digital twin model; The flushing management unit (40) is used to combine water flow data and water supply data of the same water-using area to perform foreign body obstruction analysis, and when the analysis result shows that there is foreign body obstruction, control the water-saving equipment to improve the water supply efficiency of the water-using area and reset the flushing times; The fault setting unit (50) is used to analyze the water flow fluctuation trend of the water flow data of the water-using area where the flushing times are reset, and to mark the water-using area as a fault according to the analysis result.

2. According to a digital twin-based central control system for water-saving equipment in colleges and universities according to claim 1, it is characterized by: The data collection unit (10) is connected to the digital twin system management terminal through the Internet of Things, and sensors are installed on the water supply system of the university, the water-using equipment and water-saving equipment of the teaching building, and the sensors receive and control real-time data through the Internet of Things; Water-using equipment includes toilet and urinal flushing equipment, hand washing equipment, and mop pool flushing equipment.

3. According to a digital twin-based central control system for water-saving equipment in colleges and universities according to claim 1, it is characterized by: The data collection unit (10) extracts the architectural data of the teaching building at the school management end to obtain the architectural layout data of the teaching building, and simultaneously obtains the water flow connection structure data between each water-using device and water-saving device based on the architectural layout data.

4. According to a digital twin-based central control system for water-saving equipment in colleges and universities according to claim 1, it is characterized by: The water use area generation unit (20) comprises a model building module and an area division module; The model building module is used to create a digital twin model for the university water supply system and teaching building based on the water flow connection structure data, building layout data and relevant data fed back by sensors, and inject subsequent data into the digital twin model in real time to drive the dynamic update of the model; The area division module is used to divide the water-using equipment into water-using areas according to different installation locations in the digital twin model, and then assign the water-saving equipment responsible for water supply in the water-using area to the same area.

5. According to a digital twin-based central control system for water-saving equipment in colleges and universities according to claim 1, it is characterized by: The component flushing unit (30) comprises a time acquisition module, a flushing control module, and a flushing feedback module; The time acquisition module is used to obtain the school's access control time and opening time through the school management terminal; The flushing control module is used to set a historical interception period according to the number of times the water-using equipment is used on that day, and then intercept the flushing times of the toilet equipment and the hand-washing equipment in the water-using area according to the historical interception period, and then compare the flushing times of the toilet equipment and the hand-washing equipment. When the flushing times of the hand-washing equipment are greater than the flushing times of the toilet equipment, the flushing amount of the water-using area is reduced and controlled. On the contrary, when the flushing times of the hand-washing equipment are less than the flushing times of the toilet equipment, the flushing amount of the water-using area remains unchanged. The flushing feedback module is used to control each water-using area to flush according to the corresponding flushing volume through the water-saving device, and supply the same amount of water at the same time, and then collect the water flow data fed back by each water-using area after the flushing is controlled by the water-saving device in the digital twin model.

6. According to a digital twin-based central control system for water-saving equipment in colleges and universities according to claim 5, it is characterized by: The more times the water-using equipment is used on the day in the flushing control module, the shorter the time of the historical interception period is; conversely, the fewer times the water-using equipment is used on the day, the longer the time of the historical interception period is; At the same time, when the flushing volume of the water-using area is reduced and controlled, the water-saving device only controls one-third of the water flowing out of the water tank of the water-using device.

7. According to a digital twin-based central control system for water-saving equipment in colleges and universities according to claim 1, it is characterized by: The flushing management unit (40) comprises a foreign body blocking analysis module and a flushing reset module; The foreign matter blocking analysis module is used to perform foreign matter-free flow analysis according to the flushing volume corresponding to each water-using area, and obtain foreign matter-free water flow data corresponding to each water-using area; The flushing reset module is used to analyze the foreign object obstruction between the foreign object-free water flow data and the real-time water flow data of the water-using area. When the real-time water flow data and the foreign object-free water flow data are different, it is determined that the water-using area is blocked by foreign objects, and the water-saving equipment is controlled to improve the water supply efficiency of the water-using area and reset the flushing times. When the water tank is fully filled with water, flushing is performed again. Conversely, when the real-time water flow data and the foreign object-free water flow data are the same, the water-saving equipment is controlled to stop supplying water to the water-using area.

8. According to a digital twin-based central control system for water-saving equipment in colleges and universities according to claim 1, it is characterized by: The flushing management unit (40) controls the water-saving device to resume supplying water to the water-using area when the real time reaches the opening time of the school.

9. According to a digital twin-based central control system for water-saving equipment in colleges and universities according to claim 1, it is characterized by: The fault setting unit (50) comprises a water flow fluctuation analysis module and a fault marking module; The water flow fluctuation analysis module is used to obtain the historical water flow data of the water supply and water use area where the flushing times are reset by the flushing reset module, and then perform water flow fluctuation trend analysis on the historical water flow data; The fault marking module is used to set a difference threshold based on the water flow data of the first flushing combined with the water flow data without foreign objects, and then compare the water flow fluctuation trend between the difference threshold and the historical water flow data. When the water flow fluctuation trend is less than the difference threshold, the flushing operation is stopped and the water use area is marked as a fault at the school management end. Conversely, when the water flow fluctuation trend is greater than the difference threshold, the flushing operation is continued.

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