A method and system for rainwater utilization based on sponge city, medium and product

Abstract

A rainwater utilization method and system based on a sponge city, a medium and a product, relate to the technical field of sponge cities. The method comprises: obtaining the air conditioning cooling water demand and the low water quality water demand of a current scheduling period of a commercial complex; based on weather data of the current scheduling period, combining the catchment area and the runoff coefficient of the commercial complex, calculating the predicted rainwater inflow; determining the predicted water storage of the current scheduling period; obtaining the water demand and the predicted water storage of the next scheduling period; when it is predicted that the water quantity of the next scheduling period is insufficient, executing a rainwater conservation strategy in the current scheduling period, including calculating the minimum cooling water demand and the minimum irrigation water demand of the greenbelt, prioritizing the predicted water storage to meet the minimum water demand, and storing the remaining water storage to the next scheduling period. The present application solves the problem that the fixed water level grading based static scheduling method cannot cope with the fluctuation of water demand through forward-looking prediction and dynamic conservation strategy, and realizes efficient utilization of rainwater resources.

Description

Technical Field

[0001] This application relates to the field of sponge city technology, and in particular to a method, system, medium and product for rainwater utilization based on sponge city. Background Technology

[0002] With the acceleration of global urbanization and the increasing scarcity of water resources, the construction of sponge cities has become an important concept in modern urban development. Sponge cities, through a combination of natural and artificial methods, achieve natural rainwater storage, infiltration, and purification, effectively alleviating urban flooding and water shortages. Commercial complexes, as an important component of modern cities, are characterized by large building areas and diverse water demands. Their water needs mainly include non-potable water applications such as air conditioning cooling, toilet flushing, and green space irrigation, providing opportunities for the resource utilization of rainwater.

[0003] In related technologies, rainwater utilization in commercial complexes primarily employs a static scheduling method based on the capacity-level classification of rainwater storage tanks. This method divides rainwater storage tanks into multiple fixed water level intervals according to their capacity, with each interval corresponding to a different water usage strategy. When the water level in the storage tank is in the high water level interval, the system simultaneously supplies rainwater to all water usage points, including air conditioning cooling, toilet flushing, and green space irrigation. When the water level drops to the medium water level interval, the system stops supplying water to green space irrigation, ensuring only water supply for air conditioning cooling and toilet flushing. When the water level further drops to the low water level interval, the system only supplies water to the air conditioning cooling system, with other water needs supplemented by tap water. This hierarchical scheduling method, through a preset priority order, achieves a certain degree of rational allocation of rainwater resources and ensures a stable supply of critical water needs.

[0004] However, visitor traffic in commercial complexes fluctuates significantly across different time periods and seasons, leading to substantial changes in demand for toilet flushing and air conditioning cooling water. In related technical solutions, when the actual changes in these water demands do not match the preset static grading strategy, the system scheduling may result in improper resource allocation, causing excessive consumption of rainwater resources during some periods and idle resources during others, thus affecting rainwater utilization efficiency. Summary of the Invention

[0005] This application provides a method, system, medium, and product for rainwater utilization based on sponge cities, which can improve the rainwater utilization efficiency of commercial complexes.

[0006] In a first aspect, this application provides a rainwater utilization method based on sponge cities, applied to rainwater dispatching equipment. The method includes: obtaining the air conditioning cooling water demand and low-quality water demand of a commercial complex for the current dispatching cycle, wherein the low-quality water demand includes predicted toilet flushing water demand and greening irrigation water demand; calculating the predicted rainwater inflow for the current dispatching cycle based on weather data for the current dispatching cycle, combined with the catchment area and runoff coefficient of the commercial complex; determining the predicted water storage for the current dispatching cycle based on the predicted rainwater inflow and the remaining water storage from the previous dispatching cycle, wherein the predicted water storage includes high-quality water storage and low-quality water storage obtained through filtration; obtaining the air conditioning cooling water demand, low-quality water demand, and predicted water storage for the next dispatching cycle; if the high-quality water storage is less than the air conditioning cooling water demand in the next dispatching cycle, and / or the low-quality water storage... If the water volume is less than the low water quality requirement, a rainwater conservation strategy will be implemented within the current scheduling cycle. This rainwater conservation strategy includes: calculating the minimum air conditioning cooling water requirement of the commercial complex's air conditioning system when operating in a preset energy-saving mode based on weather data for the current scheduling cycle; calculating the minimum greening irrigation water requirement based on soil moisture content data of the commercial complex's green areas and weather data for the current scheduling cycle; determining the minimum air conditioning cooling water requirement, toilet flushing water requirement, and minimum greening irrigation water requirement as the minimum water requirement; satisfying the minimum water requirement with the predicted water storage for the current scheduling cycle, and determining the difference between the predicted water storage and the minimum water requirement as the remaining water storage for the current scheduling cycle, which will be stored for the next scheduling cycle; generating control commands based on the remaining water storage for the current scheduling cycle and sending them to the rainwater pipe network valve system.

[0007] By adopting the above technical solution, the rainwater dispatching equipment first predicts the future rainwater supply and demand by obtaining the water demand and predicted storage volume for the next dispatching cycle. When the rainwater dispatching equipment predicts a potential water shortage in the next cycle, it proactively implements a rainwater conservation strategy during the current dispatching cycle. Through this strategy, the equipment calculates the minimum water demand for air conditioning cooling and greening irrigation, reducing rainwater consumption in the current dispatching cycle while ensuring the basic operation of the commercial complex. The saved remaining water is then stored for the next dispatching cycle, effectively alleviating water pressure and achieving cross-cycle optimized dispatching of rainwater resources, thus significantly improving the overall efficiency of rainwater utilization.

[0008] In conjunction with some embodiments of the first aspect, in some embodiments, calculating the minimum air conditioning cooling water demand corresponding to the air conditioning system of the commercial complex operating in a preset energy-saving mode based on weather data of the current scheduling period specifically includes: acquiring temperature data and personnel density data of each area within the commercial complex; identifying areas where the personnel density data is greater than a preset density threshold as high-density areas and areas where the personnel density data is lower than the preset density threshold as low-density areas; applying a first preset temperature to the high-density areas and a second preset temperature to the low-density areas based on the temperature data, wherein the first preset temperature is lower than the second preset temperature; and calculating the minimum air conditioning cooling water demand based on the heat dissipation power corresponding to the first preset temperature and the second preset temperature.

[0009] By adopting the above technical solution, the rainwater dispatching equipment, when implementing rainwater conservation strategies, reduces the cooling effect of the air conditioning system through zoned management, achieving refined management. The rainwater dispatching equipment accurately identifies high- and low-density areas by acquiring population density data and sets differentiated target temperatures accordingly. Lower temperatures are maintained in high-density areas to ensure comfort, while temperatures are appropriately increased in low-density areas to save energy. This intelligent temperature control based on actual population distribution makes the reduction of heat dissipation power more targeted. The final calculated minimum air conditioning cooling water requirement achieves significant water-saving effects while minimizing the impact on customer comfort in high-density areas, thus achieving a balance between water conservation and user experience.

[0010] In conjunction with some embodiments of the first aspect, in some embodiments, based on the soil moisture content data of the green area of ​​the commercial complex and combined with the weather data of the current scheduling period, the minimum greening irrigation water requirement is calculated. Specifically, this includes: obtaining the soil moisture content data of the green area of ​​the commercial complex; when the soil moisture content data is less than a preset soil moisture content threshold, obtaining the rainfall in the weather data of the current scheduling period; if the rainfall is greater than the preset rainfall threshold, then the minimum greening irrigation water requirement is zero; if the rainfall is less than or equal to the preset rainfall threshold, then calculating the amount of water replenishment required to bring the soil moisture content to the soil moisture content threshold, and determining the amount of water replenishment as the minimum greening irrigation water requirement.

[0011] By adopting the above technical solution, the rainwater dispatching equipment first determines whether the soil moisture content of the green area is below the soil moisture content threshold, avoiding unnecessary irrigation when the soil is moist. When the soil moisture content is below the threshold, the rainwater dispatching equipment further determines whether the rainfall in the current dispatching cycle is sufficient to replenish the soil moisture. If it is sufficient, the minimum water requirement for greening irrigation is zero, and the rainwater dispatching equipment actively cancels the greening irrigation plan; if it is insufficient, the rainwater dispatching equipment calculates the amount of water required to reach the soil moisture content threshold. This dual judgment mechanism eliminates blind and excessive irrigation, achieving water conservation for greening irrigation while ensuring the water demand for greening irrigation.

[0012] In conjunction with some embodiments of the first aspect, in some embodiments, determining the predicted water storage for the current scheduling period based on the predicted rainwater inflow for the current scheduling period and the remaining water storage for the previous scheduling period specifically includes: performing water quality classification treatment on the predicted rainwater inflow through a filtration system to obtain a first high-quality water storage and a first low-quality water storage; obtaining the remaining water storage for the previous scheduling period, which includes a second high-quality water storage and a second low-quality water storage; determining the sum of the first high-quality water storage and the second high-quality water storage as the high-quality water storage for the current scheduling period; determining the sum of the first low-quality water storage and the second low-quality water storage as the low-quality water storage for the current scheduling period; and determining the sum of the high-quality water storage and the low-quality water storage as the predicted water storage for the current scheduling period.

[0013] By adopting the above technical solution, the rainwater dispatching equipment performs graded management of water quality and calculation of predicted water storage for the current dispatching cycle. The equipment uses a filtration system to separate the rainwater flowing in during the current dispatching cycle into high-quality and low-quality water. It then adds the predicted rainwater inflow for the current dispatching cycle to the remaining water of the same quality from the previous dispatching cycle to obtain the predicted water storage for the current dispatching cycle. Through graded filtration and accurate calculation of water storage for different water qualities, the equipment ensures the water quality required for different water needs while improving the reliability and stability of the overall system.

[0014] In conjunction with some embodiments of the first aspect, in some embodiments, obtaining the air conditioning cooling water demand and low water quality water demand of the commercial complex for the current scheduling period specifically includes: predicting the visitor flow for the current scheduling period based on the historical visitor flow data of the commercial complex, and calculating the predicted toilet flushing water demand in combination with the preset per capita toilet flushing water consumption; calculating the air conditioning cooling water demand and greening irrigation water demand based on the weather data for the current scheduling period, the weather data including temperature data, rainfall and evaporation; and determining the sum of the predicted toilet flushing water demand and the greening irrigation water demand as the low water quality water demand.

[0015] By adopting the above technical solution, the rainwater dispatching equipment dynamically predicts visitor flow for the current dispatching cycle using historical visitor flow data, and accurately calculates the predicted water demand for toilet flushing by combining this with the per capita toilet flushing water quota. Simultaneously, based on weather data including temperature, rainfall, and evaporation, it calculates water loss during air conditioning cooling and water loss due to plant transpiration and soil evaporation, thus obtaining the water demand for air conditioning cooling and greening irrigation. The air conditioning cooling water demand is a high-quality water demand, and the low-quality water demand is obtained by superimposing the predicted toilet flushing water demand with the greening irrigation water demand, achieving accurate prediction of the commercial complex's water demand. This prediction method, which combines historical data analysis with real-time environmental monitoring, accurately grasps the actual water demand of the commercial complex at different times and under different weather conditions, improving the accuracy and efficiency of rainwater utilization dispatching.

[0016] In conjunction with some embodiments of the first aspect, in some embodiments, after obtaining the air conditioning cooling water demand, low water quality water demand, and predicted water storage for the next scheduling cycle, the method further includes: if the high water quality water storage is greater than or equal to the air conditioning cooling water demand and the low water quality water storage is greater than or equal to the low water quality water demand in the next scheduling cycle, then a conventional rainwater utilization strategy is executed in the current scheduling cycle, the conventional rainwater utilization strategy including: satisfying the air conditioning cooling water demand with the high water quality water storage; and satisfying the low water quality water demand with the low water quality water storage.

[0017] By adopting the above technical solution, the rainwater dispatching equipment first assesses the supply and demand situation for the next dispatching cycle by obtaining demand and storage forecasts. When it is determined that both high-quality and low-quality water storage volumes can meet the corresponding demands in the next dispatching cycle, the rainwater dispatching equipment will adopt a conventional utilization strategy for the current cycle. This strategy includes directing the supply of high-quality water storage to air conditioning cooling systems with higher water quality requirements, while using low-quality water storage for toilet flushing and green space irrigation, establishing a scientific water quality matching mechanism. When the water storage volume is sufficient in the current dispatching cycle, this solution meets the water needs of the commercial complex for air conditioning cooling, toilet flushing, and green space irrigation by correspondingly distributing water storage volumes of different water qualities, thereby improving rainwater utilization efficiency and avoiding waste of rainwater resources.

[0018] In conjunction with some embodiments of the first aspect, in some embodiments, after determining the difference between the predicted water storage and the minimum water demand as the remaining water storage for the current scheduling cycle, the method further includes: recalculating the predicted water storage for the next scheduling cycle, and determining whether the high-quality water storage for the next scheduling cycle is less than the air conditioning cooling water demand for the next scheduling cycle, and whether the low-quality water storage for the next scheduling cycle is less than the low-quality water demand for the next scheduling cycle; if the high-quality water storage is greater than or equal to the minimum water demand for the next scheduling cycle... If the air conditioning cooling water demand is greater than or equal to the low-quality water storage capacity, then the conventional rainwater utilization strategy will be implemented in the next scheduling cycle; if the high-quality water storage capacity is less than the air conditioning cooling water demand, and / or the low-quality water storage capacity is less than the low-quality water demand, then the first difference between the air conditioning cooling water demand and the high-quality water storage capacity, and / or the second difference between the low-quality water demand and the low-quality water storage capacity will be calculated; and supplementary water equal to the first difference and / or the second difference will be drawn from the municipal water supply system.

[0019] By adopting the above technical solution, after implementing a rainwater conservation strategy, the rainwater dispatching equipment reassesses the supply and demand situation for the next cycle. It dynamically adjusts the dispatching strategy by comparing the storage capacity of high- and low-quality water with their respective water demands. When the predicted storage capacity is sufficient, the rainwater dispatching equipment continues to implement the conventional utilization strategy. When water shortage occurs, the equipment accurately calculates the specific water volume gaps for high- and low-quality water (first and second gaps) and only draws an equivalent amount of supplementary water from the municipal water supply system. This precise differential replenishment mechanism ensures the stable satisfaction of the commercial complex's water demand while avoiding resource waste caused by excessive water replenishment. It achieves synergistic operation between rainwater utilization and municipal water supply, significantly improving the operational efficiency and economy of rainwater utilization.

[0020] In a second aspect, this application provides a rainwater dispatching device, which includes: one or more processors and a memory; the memory is coupled to the one or more processors, and the memory is used to store computer program code, the computer program code including computer instructions, and the one or more processors call the computer instructions to cause the rainwater dispatching device to perform the method described in the first aspect and any possible implementation thereof.

[0021] Thirdly, this application provides a computer-readable storage medium including instructions that, when executed on a rainwater dispatching device, cause the rainwater dispatching device to perform the method described in the first aspect and any possible implementation thereof.

[0022] Fourthly, this application provides a computer program product that, when run on a rainwater dispatching device, causes the rainwater dispatching device to perform the method described in the first aspect and any possible implementation thereof.

[0023] Understandably, the rainwater management device provided in the second aspect, the computer program product provided in the third aspect, and the computer storage medium provided in the fourth aspect are all used to execute the methods provided in the embodiments of this application. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding methods, and will not be repeated here.

[0024] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0025] 1. Due to the adoption of a rainwater scheduling mechanism based on periodic prediction and a dynamic conservation strategy, the rainwater scheduling equipment can identify the risk of insufficient water in advance and take proactive water-saving measures. This effectively solves the problem that static scheduling methods based on fixed water level classification in related technologies cannot cope with fluctuations in water demand, thereby realizing the efficient utilization of rainwater resources and intelligent regulation of supply and demand balance.

[0026] 2. Due to the adoption of a forward-looking hierarchical water supply decision-making mechanism and a water quality matching supply strategy, the rainwater dispatching equipment can flexibly adjust the current water use plan according to future supply and demand forecasts, and achieve precise supply of high and low water quality. This effectively solves the problem of waste of high-quality water resources caused by unreasonable water quality allocation in related technologies, thereby realizing hierarchical optimization of rainwater resources and a significant improvement in water supply efficiency.

[0027] 3. Due to the adoption of a dynamic feedback replenishment mechanism and a precise differential control strategy, the rainwater dispatching equipment can evaluate the dispatching effect in real time and replenish municipal water as needed, while ensuring that the replenished water volume is strictly equal to the actual gap. This effectively solves the problems of blind municipal water supply allocation and difficulty in accurately controlling the replenishment volume in related technologies, thereby achieving synergistic optimization of rainwater utilization and municipal water supply and efficient and economical use of resources. Attached Figure Description

[0028] Figure 1 This is a flowchart illustrating a rainwater utilization method based on sponge cities in an embodiment of this application;

[0029] Figure 2 This is another flowchart illustrating the rainwater utilization method based on sponge cities in this application embodiment;

[0030] Figure 3 This is a schematic diagram of the physical structure of a rainwater dispatching device in the embodiments of this application. Detailed Implementation

[0031] The terminology used in the following embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. As used in the specification of this application, the singular expressions “a,” “an,” “the,” “the,” and “this” are intended to include the plural expressions as well, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in this application refers to any or all possible combinations including one or more of the listed items.

[0032] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature, and in the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.

[0033] To facilitate understanding, the application scenarios of the embodiments of this application are described below.

[0034] In related technologies, a static scheduling method based on the capacity classification of water storage tanks can be used to achieve tiered utilization of rainwater and prioritize critical water use. This method pre-sets fixed water level thresholds in the storage tanks, such as high, medium, and low levels. When rainwater collection causes the water level to be high, the system simultaneously supplies water to all scenarios, including air conditioning cooling, toilet flushing, and green space irrigation. When the water level drops to the medium level, the system cuts off water supply to lower-priority green space irrigation. When the water level drops to the low level, only the highest-priority water demand—air conditioning cooling—is guaranteed. This approach relies on the current water storage capacity for a passive response and lacks foresight regarding future changes.

[0035] The rainwater utilization method based on sponge cities in this application predicts the rainwater supply and demand situation in the next scheduling cycle and proactively adjusts the water use plan for the current cycle, achieving cross-cycle optimized allocation of rainwater resources. This not only allows for flexible allocation of existing water volume based on future trends but also proactive demand-side management, maximizing water conservation. The method in this application no longer relies solely on the current water level but incorporates weather forecasts, historical passenger flow data, and other information to predict the rainwater inflow and water demand for the next scheduling cycle (e.g., tomorrow). When the system predicts that tomorrow may experience a rainwater shortage due to insufficient rainfall or peak passenger flow, it proactively implements conservation strategies in the current cycle (today), such as appropriately raising air conditioning temperatures to reduce cooling water consumption and calculating minimum irrigation amounts based on soil moisture. This allows the saved rainwater to be reserved for the next scheduling cycle, achieving optimized water resource allocation over time.

[0036] It is evident that the rainwater utilization method based on sponge cities in this application embodiment can not only achieve efficient utilization of rainwater resources, but also effectively solve the problem that static scheduling strategies in related technologies cannot cope with dynamic changes in water demand, leading to improper resource allocation. This enables intelligent and refined management of rainwater utilization and dynamic regulation of supply and demand balance, thereby improving rainwater utilization efficiency.

[0037] To facilitate understanding, the method provided in this implementation will be described in detail below, using the above scenario as an example. Please refer to [link / reference]. Figure 1 This is a flowchart illustrating a rainwater utilization method based on sponge cities in an embodiment of this application.

[0038] S101. Obtain the air conditioning cooling water demand and low water quality water demand of the commercial complex for the current scheduling cycle. The low water quality water demand includes the predicted toilet flushing water demand and greening irrigation water demand.

[0039] Among them, a commercial complex refers to a large cluster of buildings that integrate multiple functions such as shopping, dining, and office space, such as a large shopping mall in the city center with attached office buildings and hotels; the current scheduling cycle refers to the time interval set by the rainwater scheduling equipment for a complete rainwater scheduling operation, such as setting one day as a scheduling cycle, then the current scheduling cycle is the current day; air conditioning cooling water demand refers to the amount of water consumed by the water-cooled air conditioning system in the commercial complex to achieve its cooling function and maintain normal operation, used to represent the water consumption demand during the air conditioning cooling process; low water quality water demand refers to the water consumption that has relatively low water quality requirements and can meet the usage needs without complex purification treatment, referring to the total water consumption for specific low water quality uses, including the predicted water demand for toilet flushing and the water demand for greening irrigation; the predicted water demand for toilet flushing refers to the amount of water needed for toilet flushing in the current scheduling cycle, estimated in advance based on factors such as the number of people and usage frequency in the commercial complex, used to represent the expected water consumption for toilet flushing; the water demand for greening irrigation refers to the amount of water needed for irrigation in the current scheduling cycle to maintain the normal growth of plants in the green areas of the commercial complex, used to represent the water consumption demand for greening irrigation.

[0040] At the start of each scheduling cycle, the rainwater dispatching equipment first obtains real-time operating parameters of the water-cooled air conditioning system through a data interface with the building management system of the commercial complex. These parameters include the operating status of the cooling tower, outdoor temperature and humidity, etc., and the equipment calculates the amount of supplementary water required for air conditioning cooling within the current scheduling cycle based on these parameters. Simultaneously, the rainwater dispatching equipment calculates the toilet flushing water demand for the current scheduling cycle based on historical visitor flow and water usage data within the commercial complex. Furthermore, the equipment combines data on green area, plant type, soil moisture, and weather forecasts to predict the water demand for green space irrigation. Finally, the water demand for toilet flushing and the water demand for green space irrigation are added together to obtain the low-water-quality water demand.

[0041] S102. Based on the weather data of the current scheduling cycle, and combined with the catchment area and runoff coefficient of the commercial complex, calculate the predicted rainwater inflow for the current scheduling cycle.

[0042] Among them, weather data refers to a dataset containing meteorological information such as rainfall and rainfall intensity; catchment area refers to the horizontal projected area of ​​areas such as roofs and squares that can collect rainwater, in square meters; runoff coefficient represents the ratio of the amount of rainwater that can be collected and utilized to the total rainfall; and predicted rainwater inflow refers to the expected volume of rainwater that can be collected, in cubic meters.

[0043] After acquiring weather forecast data, the rainwater dispatching equipment calculates the amount of rainwater resources that can be collected within the current dispatching cycle. Specifically, the equipment first establishes data interaction with the meteorological data service platform to obtain weather data for the current dispatching cycle, including at least rainfall amount and rainfall intensity. Then, the equipment retrieves the catchment area data for the commercial complex, which is an accurate value determined during the construction of the complex based on the building design and surrounding site planning. Next, the equipment determines the corresponding runoff coefficient based on the different ground materials of the catchment area. For example, a runoff coefficient of 0.85 is used for the roof of the commercial complex (mostly asphalt or concrete), and 0.15 is used for green areas. If the areas of different ground materials within the catchment area are distinguishable, the runoff volume of each area is calculated separately and then summed. Finally, the equipment calculates the predicted rainwater inflow for the current dispatching cycle using the formula: "Predicted Rainwater Inflow = Catchment Area × Rainfall × Runoff Coefficient," ensuring consistent units throughout the calculation.

[0044] S103. Based on the predicted rainwater inflow of the current scheduling cycle and the remaining water storage of the previous scheduling cycle, determine the predicted water storage of the current scheduling cycle. The predicted water storage includes the high-quality water storage and the low-quality water storage obtained through filtration treatment.

[0045] The remaining water storage capacity refers to the amount of water remaining in the rainwater storage facility at the end of the previous scheduling cycle, measured in cubic meters. The predicted water storage capacity for the current scheduling cycle refers to the amount of rainwater that is expected to be stored in the rainwater storage facility after comprehensive consideration of the predicted rainwater inflow and the remaining water storage capacity from the previous scheduling cycle, and after filtration treatment. It is used to represent the expected amount of water in the rainwater storage facility at the end of the current scheduling cycle. It includes high-quality water storage capacity and low-quality water storage capacity obtained through filtration treatment. High-quality water storage capacity refers to the amount of rainwater that meets the standards for air conditioning cooling water after sedimentation, filtration, and other treatments, measured in cubic meters. Low-quality water storage capacity refers to the amount of rainwater that, after filtration treatment, does not meet the high-quality water standards but can be used for toilet flushing, greening irrigation, and other applications with lower requirements, measured in cubic meters.

[0046] After calculating the predicted rainwater inflow, the rainwater dispatching equipment determines the rainwater storage situation within the current dispatching cycle. Specifically, the equipment first retrieves the remaining water storage data recorded at the end of the previous dispatching cycle from its own storage module. This data is the accurate value detected and stored by the water level sensor installed in the rainwater storage facility after the end of the previous dispatching cycle. Then, the equipment adds the predicted rainwater inflow for the current dispatching cycle to the remaining water storage from the previous cycle to obtain the total untreated rainwater storage capacity for the current dispatching cycle. Next, according to a preset filtration process, the equipment controls the rainwater treatment system to filter the collected rainwater, resulting in high-quality water for air conditioning cooling after high-standard treatment, and low-quality water for toilet flushing and greening irrigation requiring only simple treatment.

[0047] S104. Obtain the air conditioning cooling water demand, low water quality water demand, and predicted water storage for the next scheduling cycle.

[0048] The next scheduling cycle refers to the next rainwater scheduling time interval immediately following the current scheduling cycle, and is used to represent the time interval of a subsequent complete rainwater scheduling operation.

[0049] After completing the water storage forecast for the current scheduling cycle, the rainwater dispatching equipment anticipates the water demand and predicted water storage for the next cycle. The rainwater dispatching equipment obtains the air conditioning cooling water demand, low-water-quality water demand, and predicted water storage for the next scheduling cycle. The specific descriptions are similar to steps S101 to S103, and can be found in the descriptions of the corresponding steps; they will not be repeated here.

[0050] S105. If the high-quality water storage is less than the air conditioning cooling water demand in the next scheduling cycle, and / or the low-quality water storage is less than the low-quality water demand, then a rainwater conservation strategy will be implemented in the current scheduling cycle. The rainwater conservation strategy includes:

[0051] Based on the weather data of the current scheduling cycle, calculate the minimum cooling water demand of the air conditioning system of the commercial complex when it is running in the preset energy-saving mode;

[0052] Based on the soil moisture content data of the green area of ​​the commercial complex, combined with the weather data of the current scheduling cycle, the minimum irrigation water requirement for the green area is calculated.

[0053] The minimum water requirement is defined as the minimum water demand for air conditioning cooling, the minimum water demand for toilet flushing, and the minimum water demand for greening irrigation.

[0054] The predicted water storage capacity of the current scheduling cycle is used to meet the minimum water demand, and the difference between the predicted water storage capacity and the minimum water demand is determined as the remaining water storage capacity of the current scheduling cycle. The remaining water storage capacity is used to store water for the next scheduling cycle.

[0055] Control commands are generated based on the remaining water storage capacity during the current scheduling cycle and sent to the rainwater pipe network valve system.

[0056] Among them, the rainwater conservation strategy refers to a series of water-saving measures and optimized scheduling schemes when it is determined that the water volume for the next scheduling cycle is insufficient; the energy-saving mode refers to the operating state of the air conditioning system while maintaining basic cooling effect under the premise of reducing energy consumption; the minimum air conditioning cooling water requirement indicates the minimum amount of water required for the air conditioning system to operate in the energy-saving mode; the minimum greening irrigation water requirement indicates the minimum amount of irrigation water required to maintain the basic growth of plants; the minimum water requirement indicates the minimum amount of water required to maintain the basic operation of the commercial complex; and the remaining water storage capacity refers to the amount of water that can be stored for the next cycle at the end of the current scheduling cycle.

[0057] After acquiring the forecast data for the next scheduling cycle, the rainwater dispatching equipment determines whether to activate conservation measures. Specifically, the rainwater dispatching equipment first compares the forecast data for the next scheduling cycle. When the predicted high-quality water storage is less than the cooling water demand for air conditioning, or the predicted low-quality water storage is less than the low-quality water demand (including toilet flushing and greening irrigation), a rainwater conservation strategy will be triggered. This rainwater conservation strategy comprises four specific measures: First, based on current weather data, the air conditioning system is switched to a preset energy-saving mode (e.g., increasing the cooling water temperature and optimizing cooling tower operating parameters), and the minimum air conditioning cooling water requirement in this mode is calculated. Second, real-time soil moisture content in green areas is obtained through a soil moisture monitoring system, and combined with weather data, the minimum irrigation water required to maintain basic plant growth is calculated. Third, the calculated minimum air conditioning cooling water requirement, the existing toilet flushing water requirement (because toilet flushing water is difficult to reduce), and the minimum greening irrigation water requirement are added together to obtain the minimum water requirement for the commercial complex. Fourth, the predicted water storage capacity for the current scheduling cycle is used to prioritize meeting the minimum water requirement, and the remaining water will be stored as reserve water for use in the next scheduling cycle. This rainwater conservation strategy ensures the basic operational needs of the commercial complex during periods of water scarcity, while maximizing the conservation of water resources.

[0058] For example, during the implementation phase of the rainwater conservation strategy, the rainwater dispatching equipment operates in the following four steps: First, calculate the minimum air conditioning cooling water demand: retrieve the weather data for the current dispatching period (e.g., temperature 24℃, humidity 65%), combine it with the preset energy-saving mode parameter library of the commercial complex's air conditioning system (e.g., temperature 20-26℃ is suitable for "light energy-saving mode"), determine the optimal energy-saving mode as "light energy-saving mode", and then, based on the historical operating data under this mode (e.g., minimum cooling water demand of 310 cubic meters under the same weather conditions), and combined with the actual operating conditions of the commercial complex in the current dispatching period, fine-tune and determine the minimum air conditioning cooling water demand for the current dispatching period as 320 cubic meters. The second step is to calculate the minimum irrigation water requirement for greening: Soil moisture content data (e.g., 18%) of the greening area is obtained through a data interface. Combined with current weather data for the scheduling period (e.g., 5mm of light rain and 5mm of evaporation in the next 24 hours), and based on the plant water requirement model (e.g., irrigation can be reduced by 40% when soil moisture content is higher than 15% and there is rainfall), the minimum irrigation water requirement for greening in the current scheduling period is calculated to be 180 cubic meters (60% of the conventional irrigation amount of 300 cubic meters). The third step is to determine the minimum water requirement: The minimum air conditioning cooling water requirement calculated in the first step (320 cubic meters), the pre-obtained toilet flushing water requirement for the current scheduling period (220 cubic meters, toilet flushing water requirement is relatively stable and determined according to conventional needs), and the minimum irrigation water requirement for greening calculated in the second step (180 cubic meters) are added together to obtain the minimum water requirement for the current scheduling period: 320 + 220 + 180 = 720 cubic meters. The fourth step is to calculate the remaining water storage for the current scheduling cycle: retrieve the predicted water storage for the current scheduling cycle (850 cubic meters) and subtract the minimum water demand (720 cubic meters) to obtain the remaining water storage for the current scheduling cycle as 850-720=130 cubic meters. This remaining water storage data will be used as the "remaining water storage for the previous cycle" for the next scheduling cycle.

[0059] In this embodiment, the rainwater dispatching equipment first predicts future rainwater supply and demand by acquiring the water demand and predicted storage volume for the next dispatching cycle. When a water shortage is predicted for the next cycle, a rainwater conservation strategy is proactively implemented in the current dispatching cycle. This strategy calculates the minimum water demand for air conditioning cooling and greening irrigation, reducing rainwater consumption in the current cycle while ensuring the basic operation of the commercial complex. The saved storage volume is carried over to the next cycle, effectively alleviating future water pressure. This achieves cross-cycle optimized dispatching of rainwater resources, transforming passive response into proactive planning, and significantly improving the overall efficiency and foresight of rainwater utilization.

[0060] In light of the above scenarios, the method provided in this implementation will now be described in more detail. Please refer to [link / reference]. Figure 2This is another flowchart illustrating the rainwater utilization method based on sponge cities in this application embodiment.

[0061] S201. Obtain the air conditioning cooling water demand and low water quality water demand of the commercial complex for the current scheduling cycle. The low water quality water demand includes the predicted toilet flushing water demand and greening irrigation water demand.

[0062] Specifically, based on the historical visitor flow data of the commercial complex, the visitor flow for the current scheduling period is predicted, and combined with the preset per capita toilet flushing water consumption, the predicted toilet flushing water demand is calculated.

[0063] Based on the weather data of the current scheduling cycle, calculate the water demand for air conditioning cooling and the water demand for greening irrigation. The weather data includes temperature data, rainfall and evaporation.

[0064] The sum of the predicted toilet flushing water demand and the greening irrigation water demand is determined as the low water quality water demand.

[0065] Among them, weather data refers to a dataset containing meteorological information such as temperature, rainfall, evaporation, humidity, and wind speed within the current scheduling period; visitor flow data refers to statistical data on the movement of people within the commercial complex; temperature data refers to the average outdoor temperature, maximum temperature, minimum temperature, and indoor temperature in various areas within the current scheduling period, which directly affects the cooling demand of air conditioning; rainfall refers to the total amount of rain expected to fall within the current scheduling period; evaporation refers to the amount of water lost from the soil in green areas due to evaporation within the current scheduling period, which is used to correct the water demand for greening irrigation; per capita toilet flushing water consumption represents the average amount of water used per person per toilet use.

[0066] Specifically, the rainwater dispatching equipment first calculates the predicted water demand for toilet flushing: it retrieves historical visitor traffic data (such as visitor traffic curves for the same week and holiday type within the past 30 days) from its own storage module or the building management system of the commercial complex, and predicts the visitor traffic for the current dispatching period through time series analysis (such as moving average method, exponential smoothing method). Then, it retrieves the preset per capita toilet flushing water consumption (such as 10 liters / person / time), and combines it with the average number of toilet flushes per visitor, calculating the predicted toilet flushing water demand using the formula "Predicted toilet flushing water demand = Predicted visitor traffic × Per capita toilet flushing water consumption × Average number of toilet flushes". Next, it calculates the air conditioning cooling water demand and the greening irrigation water demand: it obtains weather data for the current dispatching period from the meteorological data platform, including temperature data (such as an average outdoor temperature of 30℃) used to calculate the air conditioning load. The higher the temperature, the higher the operating frequency of the air conditioning compressor, and the greater the cooling water demand. The rainwater dispatching equipment calculates the current air conditioning cooling water demand using a preset "temperature-cooling water volume" non-linear lookup table, combined with the rated cooling water volume of the air conditioning system. Simultaneously, using rainfall and evaporation data from weather data, combined with the area of ​​green areas and the water requirement coefficient of plants, the result is calculated using the formula "Green irrigation water requirement = (Plant water requirement coefficient × Green area × (Evaporation - Effective rainfall)) / 1000". Finally, the calculated predicted toilet flushing water requirement is added to the green irrigation water requirement to obtain the low water quality water requirement for the current scheduling cycle. At the same time, the air conditioning cooling water requirement is recorded, completing the statistics of the core water demand for the current scheduling cycle.

[0067] S202. Based on the weather data of the current scheduling cycle, combined with the catchment area and runoff coefficient of the commercial complex, calculate the predicted rainwater inflow for the current scheduling cycle.

[0068] Step S202 and Figure 1 The description of step S102 in the above embodiment is similar and will not be repeated here. Please refer to the description of the corresponding step.

[0069] S203. Based on the predicted rainwater inflow of the current scheduling cycle and the remaining water storage of the previous scheduling cycle, determine the predicted water storage of the current scheduling cycle. The predicted water storage includes the high-quality water storage and the low-quality water storage obtained through filtration treatment.

[0070] Specifically, the predicted rainwater inflow is treated by water quality classification through a filtration system to obtain the first high-quality water storage capacity and the first low-quality water storage capacity.

[0071] Obtain the remaining water storage volume from the previous scheduling cycle, which includes the second highest water quality water storage volume and the second lowest water quality water storage volume.

[0072] The sum of the first high-quality water storage and the second high-quality water storage is determined as the high-quality water storage for the current scheduling cycle;

[0073] The sum of the first low-quality water storage and the second low-quality water storage is determined as the low-quality water storage for the current scheduling cycle.

[0074] The sum of the high-quality water storage and the low-quality water storage is determined as the predicted water storage for the current scheduling cycle.

[0075] High-quality water storage refers to the amount of water that meets the standards for air conditioning cooling water after precision filtration and disinfection; low-quality water storage refers to the amount of water that can be used for low-requirement purposes such as toilet flushing and irrigation with only basic filtration; filtration system refers to a combination of equipment used to purify and classify rainwater, including primary filters, precision filters and disinfection devices, to filter rainwater into high-quality water and low-quality water according to water quality requirements; water quality classification treatment refers to the process of classifying and treating water according to different uses.

[0076] After calculating the predicted rainwater inflow, the rainwater dispatching equipment needs to combine the remaining water storage from the previous dispatching cycle to determine the total amount of rainwater available for dispatch in the current dispatching cycle and the water quality classification. Specifically, the rainwater dispatching equipment first filters and classifies the predicted rainwater inflow for the current dispatching cycle: the filtration system is activated, and the predicted rainwater inflow is pre-treated by the pretreatment unit. The pre-treated rainwater is then divided into two parts. One part (e.g., 60%) enters the deep treatment unit, where it undergoes quartz sand filtration (removing suspended solids), activated carbon adsorption (removing odors and organic matter), and security filtration (removing minute impurities). The water quality meets the standards for air conditioning cooling water (e.g., turbidity ≤ 5 NTU, COD ≤ 30 mg / L), and the first high-quality water storage volume is calculated. The other part (e.g., 40%) only undergoes pretreatment and does not enter the deep treatment unit. The water quality meets the standards for toilet flushing / green irrigation (e.g., turbidity ≤ 20 NTU, COD ≤ 80 mg / L), and the first low-quality water storage volume is calculated. Next, the remaining water storage data from the previous cycle is retrieved: the remaining water storage recorded at the end of the previous scheduling cycle is read from the storage module of the rainwater dispatching equipment, including the remaining second-highest water quality storage and the second-lowest water quality storage from the previous cycle. Then, the high and low water quality storage for the current scheduling cycle are calculated separately: current high water quality storage = first-highest water quality storage + second-highest water quality storage; current low water quality storage = first-lowest water quality storage + second-lowest water quality storage. Finally, the current high water quality storage and low water quality storage are added together to obtain the predicted water storage for the current scheduling cycle, completing the calculation of the total amount of dispatchable rainwater resources and water quality classification for the current scheduling cycle.

[0077] S204. Obtain the air conditioning cooling water demand, low water quality water demand, and predicted water storage for the next scheduling cycle;

[0078] Step S204 and Figure 1The description of step S104 in the above embodiment is similar and will not be repeated here. Please refer to the description of the corresponding step.

[0079] S205. If the high-quality water storage volume is greater than or equal to the air conditioning cooling water demand in the next scheduling cycle, and the low-quality water storage volume is greater than or equal to the low-quality water demand, then the conventional rainwater utilization strategy shall be executed in the current scheduling cycle. The conventional rainwater utilization strategy includes: meeting the air conditioning cooling water demand through the high-quality water storage volume; and meeting the low-quality water demand through the low-quality water storage volume.

[0080] Among them, conventional rainwater utilization strategy refers to a standardized rainwater allocation scheme under the condition of sufficient water volume, which is used to efficiently and stably match rainwater to the corresponding water use scenarios when resources are sufficient, so as to avoid rainwater being idle or over-reliance on municipal water supply.

[0081] After acquiring the forecast data for the next scheduling cycle, the rainwater dispatching equipment needs to determine whether to implement the conventional rainwater utilization strategy. Specifically, the equipment first assesses the water volume for the next cycle: checking if the high-quality water storage is greater than or equal to the air conditioning cooling demand, and simultaneously checking if the low-quality water storage is greater than or equal to the predicted toilet flushing and greening irrigation demands. When both conditions are met, it indicates that the predicted water storage for the next cycle is sufficient, and the equipment will implement the conventional rainwater utilization strategy for the current cycle. Under this strategy, the equipment prioritizes using the high-quality water storage to meet the cooling needs of the air conditioning system, controlling pumps to deliver treated, high-quality rainwater to the cooling towers. Simultaneously, it uses the low-quality water storage to meet the needs of toilet flushing and greening irrigation, delivering the treated rainwater to toilet tanks and greening sprinkler systems via a pipeline network. Throughout the process, the equipment monitors water consumption at each water point in real time to ensure a stable water supply that meets water quality requirements.

[0082] S206. If, in the next scheduling cycle, the high-quality water storage is less than the air conditioning cooling water demand, and / or the low-quality water storage is less than the low-quality water demand, then a rainwater conservation strategy will be implemented in the current scheduling cycle. This rainwater conservation strategy includes:

[0083] Among them, the rainwater conservation and utilization strategy refers to a series of water-saving and optimized scheduling measures taken when insufficient water is predicted for the next scheduling cycle.

[0084] When the rainwater dispatching equipment determines that there is insufficient water in the next dispatching cycle, it activates a water conservation strategy. Specifically, the rainwater dispatching equipment first analyzes the forecast data for the next dispatching cycle. If the predicted high-quality water storage is less than the cooling water demand for air conditioning, or the low-quality water storage is less than the low-quality water demand, it determines that there is insufficient water and immediately activates a rainwater conservation strategy in the current dispatching cycle. This involves adjusting the water usage plan to reduce current water consumption and reserve more water for the next cycle.

[0085] S2061. Based on the weather data of the current scheduling cycle, calculate the minimum air conditioning cooling water demand corresponding to the air conditioning system of the commercial complex when it is running in the preset energy-saving mode.

[0086] Specifically, obtain temperature data and personnel density data for each area within the commercial complex;

[0087] Areas where the population density data is greater than a preset density threshold are defined as high-density areas, and areas where the population density data is lower than a preset density threshold are defined as low-density areas.

[0088] Based on the temperature data, a first preset temperature is applied to the high-density area, and a second preset temperature is applied to the low-density area. The first preset temperature is lower than the second preset temperature.

[0089] The minimum cooling water requirement for the air conditioner is calculated based on the heat dissipation power corresponding to the first preset temperature and the second preset temperature.

[0090] Among them, temperature data represents the real-time temperature information of each area of ​​the commercial complex; personnel density data refers to the number of people per unit area; preset density threshold is a standard value used to distinguish between high and low density areas, such as 0.5 people per square meter; high density area refers to places where more people gather; low density area refers to spaces where fewer people gather; the first preset temperature refers to the target temperature setting value of the high density area; the second preset temperature refers to the target temperature setting value of the low density area; heat dissipation power refers to the cooling capacity of the air conditioning system under different temperature settings.

[0091] When implementing a water conservation strategy, the rainwater dispatching equipment first optimizes the operating parameters of the air conditioning system. Specifically, the equipment obtains real-time temperatures for each area through a temperature sensor network and population density data through a passenger flow statistics system. Areas with population density exceeding a preset threshold (e.g., 0.5 people / square meter) are marked as high-density areas, and those below the threshold are marked as low-density areas. Then, based on the temperature of each area, a first preset temperature (e.g., 24℃) is used in high-density areas, and a second preset temperature (e.g., 26℃) is used in low-density areas. Finally, the corresponding heat dissipation power is set according to different temperatures, and the minimum cooling water volume required by the air conditioning system in energy-saving mode is calculated. According to the formula "cooling water demand = total heat dissipation power × water consumption per unit power" (e.g., water consumption per unit power is preset to 0.2 m³ / (kW・cycle)), the minimum air conditioning cooling water demand corresponding to a total heat dissipation power of 1100 + 800 = 1900 kW is calculated as 1900 × 0.2 = 380 cubic meters, thus completing the calculation of the minimum cooling water demand and reducing water consumption compared to the conventional mode.

[0092] Optionally, in some embodiments, considering the constant temperature characteristics of underground rainwater storage facilities in sponge cities, the temperature of collected and stored rainwater is typically lower than the surface tap water temperature in summer. When calculating the minimum air conditioning cooling water demand, the rainwater dispatching equipment also obtains real-time rainwater temperature data through temperature sensors deployed at the bottom of the rainwater storage tank, and obtains the wet-bulb temperature from outdoor meteorological data; based on the temperature difference between the real-time rainwater temperature data and the wet-bulb temperature, a preset nonlinear evaporation correction model is used to dynamically lower the target operating frequency of the air conditioning cooling tower fan to reduce water vapor dispersion and evaporation loss rate of the cooling tower; subsequently, based on the lowered target operating frequency and the corresponding evaporation loss rate, the calculation base for the minimum air conditioning cooling water demand is readjusted, further compressing the water consumption demand for air conditioning cooling from a physical perspective, and achieving dual savings in water resources and electricity.

[0093] S2062. Based on the soil moisture content data of the green area of ​​the commercial complex and combined with the weather data of the current scheduling cycle, calculate the minimum irrigation water requirement for the green area.

[0094] Specifically, obtain soil moisture content data for the green areas of the commercial complex;

[0095] When the soil moisture content data is less than the preset soil moisture content threshold, obtain the rainfall data from the weather data of the current scheduling cycle;

[0096] If the rainfall exceeds the preset rainfall threshold, the minimum irrigation water requirement for greening is zero.

[0097] If the rainfall is less than or equal to the preset rainfall threshold, the amount of water replenishment required to bring the soil moisture content to the soil moisture content threshold is calculated, and the amount of water replenishment is determined as the minimum greening irrigation water requirement.

[0098] Among them, soil moisture content data represents the percentage of water content in the soil of the green area; soil moisture content threshold refers to the minimum soil moisture content standard required to maintain normal plant growth; rainfall represents the expected rainfall in the current scheduling cycle; preset rainfall threshold is used to determine whether natural rainfall can meet the water requirements of plants; and water replenishment refers to the amount of water that needs to be supplemented by artificial irrigation.

[0099] When determining the minimum irrigation needs for green areas, rainwater management equipment needs to comprehensively consider soil and weather conditions. Specifically, the equipment first acquires soil moisture data for each sub-area (e.g., 12% for rooftop gardens, 18% for plaza green belts, and 9% for green spaces around parking lots) by deploying soil moisture sensors at different locations within the green area (e.g., one sensor per 100 square meters). It then retrieves preset soil moisture thresholds for the corresponding plant types in each sub-area (e.g., 15% for trees in rooftop gardens, 16% for shrubs in plaza green belts, and 10% for lawns around parking lots). Based on the soil moisture data and the preset soil moisture thresholds for the corresponding plant types in each sub-area, the equipment calculates the water difference between the sub-areas and sets the corresponding rainfall threshold for that sub-area based on this water difference.

[0100] When the soil moisture content of a sub-region is greater than the soil moisture content threshold, no additional water is needed for that sub-region; that is, the minimum irrigation water requirement for that sub-region is zero. Next, sub-regions with soil moisture content less than the soil moisture content threshold are selected, and irrigation water requirements are calculated only for these sub-regions. Based on the rainfall data obtained from the current scheduling cycle, the additional water requirement for each sub-region is calculated, where "Additional water requirement = Green area × Soil thickness × (Threshold - Current moisture content) × Soil bulk density". If the rainfall in a sub-region is greater than the preset rainfall threshold, then the minimum irrigation water requirement for that sub-region is zero, and no irrigation is required.

[0101] Furthermore, due to the complex architectural structure of commercial complexes, the duration of sunshine and wind speed vary greatly among different green areas. When calculating the water replenishment volume for each sub-area, the rainwater dispatching equipment pre-loads the 3D building digital model (BIM) of the commercial complex and combines it with the solar altitude angle and azimuth angle data of the current dispatching cycle to calculate the shading duration of each green sub-area in real time within the current dispatching cycle. For shaded green sub-areas where the shading duration exceeds the preset shading threshold, the basic evaporation is reduced using the first transpiration coefficient attenuation rate. For windward green sub-areas affected by the increased wind speed due to the "narrowing effect" between buildings, the basic evaporation is increased using the second transpiration coefficient amplification rate. Finally, the water replenishment volume is accurately calculated based on the corrected actual evaporation volume of each sub-area.

[0102] S2063, The minimum water requirement for air conditioning cooling, the minimum water requirement for toilet flushing, and the minimum water requirement for greening irrigation are determined as the minimum water requirement;

[0103] The rainwater dispatching equipment calculates the minimum water demand for the current dispatching cycle based on the processed data. Specifically, the equipment sums the calculated minimum water demand for air conditioning cooling, toilet flushing, and greening irrigation to obtain the minimum water demand for the current dispatching cycle.

[0104] S2064. The predicted water storage capacity of the current scheduling cycle meets the minimum water demand, and the difference between the predicted water storage capacity and the minimum water demand is determined as the remaining water storage capacity of the current scheduling cycle. The remaining water storage capacity is used to store water for the next scheduling cycle.

[0105] After calculating the minimum water demand, the stormwater management system allocates water for the current management cycle. Specifically, it first prioritizes meeting the minimum water demand from the predicted storage capacity for the current cycle to ensure the basic operational needs of the commercial complex. Then, it subtracts the minimum water demand from the predicted storage capacity to obtain the remaining storage capacity. The system records this remaining storage capacity in its database and uses pumps and pipelines to store this water in storage facilities for use in the next management cycle.

[0106] S2065. Generate control commands based on the remaining water storage capacity in the current scheduling cycle and send them to the rainwater pipe network valve system.

[0107] S207. Recalculate the predicted water storage for the next scheduling cycle, and determine whether the high water quality water storage for the next scheduling cycle is less than the air conditioning cooling water demand for the next scheduling cycle, and whether the low water quality water storage for the next scheduling cycle is less than the low water quality water demand for the next scheduling cycle.

[0108] After determining the remaining water storage for the current cycle, the rainwater dispatching equipment needs to reassess the water situation for the next cycle. Specifically, based on the latest weather forecast data and the current remaining water storage, the equipment recalculates the predicted water storage for the next dispatching cycle. Then, it compares the high-quality water storage with the air conditioning cooling water demand, and simultaneously compares the low-quality water storage with the low-quality water demand, to determine whether the water storage for each water quality level can meet the corresponding water demand.

[0109] S208. If the high-quality water storage volume is greater than or equal to the air conditioning cooling water demand and the low-quality water storage volume is greater than or equal to the low-quality water demand, then the conventional rainwater utilization strategy shall be executed in the next scheduling cycle.

[0110] When the recalculated water volume for the next cycle meets the demand, the rainwater dispatching equipment needs to implement a conventional water use plan. Specifically, after confirming that the high-quality water storage volume is sufficient to meet air conditioning cooling needs and the low-quality water storage volume is sufficient to meet toilet flushing and irrigation needs in the next dispatching cycle, the rainwater dispatching equipment plans to adopt a conventional rainwater utilization strategy. This conventional rainwater utilization strategy will use the corresponding water quality storage to meet various water needs according to the standard water supply plan, without requiring water-saving measures.

[0111] S209. If the high-quality water storage is less than the air conditioning cooling water demand, and / or the low-quality water storage is less than the low-quality water demand, then calculate the first difference between the air conditioning cooling water demand and the high-quality water storage, and / or the second difference between the low-quality water demand and the low-quality water storage.

[0112] The first difference refers to the shortfall in the amount of water required for air conditioning cooling that exceeds the amount of water stored in high-quality water. For example, if the required water volume is 350 cubic meters, minus the stored water volume of 300 cubic meters equals a difference of 50 cubic meters. The second difference refers to the shortfall in the amount of water required for low-quality water that exceeds the amount of water stored in low-quality water. For example, if the required water volume is 450 cubic meters, minus the stored water volume of 400 cubic meters equals a difference of 50 cubic meters.

[0113] If the recalculated water volume for the next cycle is still insufficient, the rainwater dispatching equipment needs to calculate the specific water shortage. Specifically, the rainwater dispatching equipment calculates the water shortage for two levels: high water quality and low water quality. The first difference is obtained by subtracting the high water quality storage from the air conditioning cooling water demand; the second difference is obtained by subtracting the low water quality storage from the low water quality water demand.

[0114] The first deficit is marked as "air conditioning cooling water shortage" and associated with the municipal water supply's industrial water network (air conditioning cooling water quality requirements match municipal industrial water requirements); the second deficit is marked as "low-quality water shortage" and associated with the municipal water supply's miscellaneous water network (toilet flushing and landscaping water quality requirements match municipal miscellaneous water requirements). Simultaneously, the rainwater dispatching equipment generates a deficit report containing the deficit value, corresponding water usage scenario, and associated municipal network type, which is stored in the system database to ensure accurate calculation and clear classification of water shortage gaps, avoiding confusion in municipal water supply allocation.

[0115] S210. Obtain a supplementary water volume from the municipal water supply system equal to the first difference and / or the second difference.

[0116] Among them, the municipal water supply system refers to the city's tap water supply network; the supplementary water volume refers to the amount of water that needs to be drawn from the municipal water supply system to make up for the insufficient rainwater storage.

[0117] After calculating the water shortage, the rainwater dispatching equipment needs to replenish the insufficient water in a timely manner. Specifically, the rainwater dispatching equipment first retrieves the deficit report from the system database to confirm the first and second deficits that need to be replenished. Then, it sends a water replenishment request through the communication interface with the municipal water supply system, including the amount of water to be replenished and the time of replenishment. After receiving the water replenishment permission signal, the rainwater dispatching equipment controls the opening of the valves connecting the commercial complex to the municipal pipe network to replenish the water. During the water replenishment process, the rainwater dispatching equipment monitors the water replenishment volume in real time through flow sensors. When the water replenishment volume reaches the replenishment volume in the deficit report, it automatically closes the corresponding valve to avoid over-replenishment and waste.

[0118] In this embodiment, the rainwater dispatching equipment dynamically predicts visitor flow and weather data to accurately calculate different water demands and manages the collected rainwater in high- and low-quality categories, thereby predicting the supply and demand situation for the next cycle. When the predicted water volume is insufficient, the rainwater dispatching equipment does not simply restrict water, but rather uses refined methods such as adjusting air conditioning based on population density and optimizing irrigation by combining soil moisture content and rainfall to maximize water conservation while ensuring critical needs are met. Finally, the rainwater dispatching equipment accurately calculates the remaining gap after conservation and replenishes municipal water as needed, constructing a closed-loop control system from prediction, decision-making, refined conservation to precise replenishment, maximizing the utilization efficiency of rainwater resources.

[0119] The rainwater dispatching device in the embodiments of this invention is described below from the perspective of hardware processing. Please refer to [link / reference needed]. Figure 3 This is a schematic diagram of the physical structure of a rainwater dispatching device in an embodiment of this application.

[0120] It should be noted that, Figure 3 The structure of the rainwater dispatching device shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of the present invention.

[0121] like Figure 3 As shown, the rainwater management device includes a CPU 301, which can perform various appropriate actions and processes according to a program stored in the read-only memory ROM 302 or a program loaded from the storage section 308 into the random access memory RAM 303, such as performing the methods described in the above embodiments. The RAM 303 also stores various programs and data required for system operation. The CPU 301, ROM 302, and RAM 303 are interconnected via a bus 304. An I / O interface 305 is also connected to the bus 304.

[0122] The following components are connected to I / O interface 305: input section 306 including audio input devices, push-button switches, etc.; output section 307 including a liquid crystal display (LCD) and audio output devices, indicator lights, etc.; storage section 308 including a hard disk, etc.; and communication section 309 including a network interface card such as a LAN (Local Area Network) card, modem, etc. Communication section 309 performs communication processing via a network such as the Internet. Drive 310 is also connected to I / O interface 305 as needed. Removable media 311, such as a disk, optical disk, magneto-optical disk, semiconductor memory, etc., are installed on drive 310 as needed so that computer programs read from them can be installed into storage section 308 as needed.

[0123] In particular, according to embodiments of the present invention, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of the present invention include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing computer programs for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via communication section 309, and / or installed from removable medium 311. When the computer program is executed by CPU 301, it performs the various functions defined in the present invention.

[0124] It should be noted that specific examples of computer-readable storage media may include, but are not limited to: electrical connections having one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), flash memory, optical fiber, portable compact disc read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this invention, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0125] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of the present invention. Each block in a flowchart or block diagram may represent a module, program segment, or portion of code, which contains one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those shown in the drawings.

[0126] Specifically, the rainwater dispatching device in this embodiment includes a processor and a memory. The memory stores a computer program, and when the computer program is executed by the processor, it implements the rainwater utilization method based on sponge cities provided in the above embodiment.

[0127] In another aspect, the present invention also provides a computer-readable storage medium, which may be included in the rainwater management device described in the above embodiments; or it may exist independently and not assembled into the rainwater management device. The storage medium carries one or more computer programs, which, when executed by a processor of the rainwater management device, cause the rainwater management device to implement the rainwater utilization method based on sponge cities provided in the above embodiments.

[0128] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0129] As used in the above embodiments, depending on the context, the term "when..." can be interpreted as meaning "if...", "after...", "in response to determining...", or "in response to detecting...". Similarly, depending on the context, the phrase "when determining..." or "if (the stated condition or event) is interpreted as meaning "if determining...", "in response to determining...", "when (the stated condition or event) is detected", or "in response to detecting (the stated condition or event)".

[0130] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. This program can be stored in a computer-readable storage medium, and when executed, it can include the processes described in the above method embodiments. The aforementioned storage medium includes various media capable of storing program code, such as ROM or random access memory (RAM), magnetic disks, or optical disks.

Claims

1. A rainwater utilization method based on sponge cities, characterized in that, The method, applied to rainwater management equipment, includes: Obtain the air conditioning cooling water demand and low water quality water demand of the commercial complex during the current scheduling cycle. The low water quality water demand includes the predicted toilet flushing water demand and greening irrigation water demand. Based on the weather data of the current scheduling period, combined with the catchment area and runoff coefficient of the commercial complex, the predicted rainwater inflow for the current scheduling period is calculated. Based on the predicted rainwater inflow of the current scheduling cycle and the remaining water storage of the previous scheduling cycle, the predicted water storage of the current scheduling cycle is determined. The predicted water storage includes high-quality water storage and low-quality water storage obtained through filtration. Obtain the air conditioning cooling water demand, low water quality water demand, and predicted water storage for the next scheduling cycle; If, in the next scheduling cycle, the high-quality water storage is less than the air conditioning cooling water demand, and / or the low-quality water storage is less than the low-quality water demand, then a rainwater conservation strategy will be implemented in the current scheduling cycle. The rainwater conservation strategy includes: Based on the weather data of the current scheduling cycle, calculate the minimum air conditioning cooling water demand corresponding to the air conditioning system of the commercial complex when it is running in the preset energy-saving mode; Based on the soil moisture content data of the green area of ​​the commercial complex, combined with the weather data of the current scheduling cycle, the minimum irrigation water requirement for greening is calculated. The minimum water requirement is defined as the minimum water requirement for air conditioning cooling, the minimum water requirement for toilet flushing, and the minimum water requirement for greening irrigation. The predicted water storage capacity of the current scheduling cycle is used to meet the minimum water demand, and the remaining water storage capacity of the current scheduling cycle is determined based on the difference between the predicted water storage capacity and the minimum water demand. The remaining water storage capacity is used to store water for the next scheduling cycle. Control commands are generated based on the remaining water storage capacity during the current scheduling cycle and sent to the rainwater pipe network valve system.

2. The method according to claim 1, characterized in that, The step of calculating the minimum cooling water demand of the commercial complex's air conditioning system in a preset energy-saving mode based on weather data from the current scheduling period specifically includes: Obtain temperature data and personnel density data for each area within the commercial complex; Areas where the personnel density data is greater than a preset density threshold are defined as high-density areas, and areas where the personnel density data is lower than a preset density threshold are defined as low-density areas. Based on the temperature data, a first preset temperature is applied to the high-density area, and a second preset temperature is applied to the low-density area, wherein the first preset temperature is less than the second preset temperature. The minimum air conditioning cooling water requirement is calculated based on the heat dissipation power corresponding to the first preset temperature and the second preset temperature.

3. The method according to claim 1, characterized in that, Based on the soil moisture content data of the green areas of the commercial complex, combined with the weather data of the current scheduling cycle, the minimum irrigation water requirement for the green areas is calculated, specifically including: Obtain soil moisture content data for the green areas of the commercial complex; When the soil moisture content data is less than the preset soil moisture content threshold, the rainfall in the weather data of the current scheduling cycle is obtained. If the rainfall is greater than the preset rainfall threshold, then the minimum greening irrigation water requirement is zero; If the rainfall is less than or equal to the preset rainfall threshold, the amount of water replenishment required to bring the soil moisture content to the soil moisture content threshold is calculated, and the amount of water replenishment is determined as the minimum greening irrigation water requirement.

4. The method according to claim 1, characterized in that, The step of determining the predicted water storage for the current scheduling cycle based on the predicted rainwater inflow for the current scheduling cycle and the remaining water storage for the previous scheduling cycle specifically includes: The predicted rainwater inflow is processed by a filtration system to classify the water quality, resulting in a first high-quality water storage capacity and a first low-quality water storage capacity. Obtain the remaining water storage volume of the previous scheduling cycle, wherein the remaining water storage volume includes the second high water quality water storage volume and the second low water quality water storage volume; The sum of the first high-quality water storage and the second high-quality water storage is determined as the high-quality water storage for the current scheduling cycle; The sum of the first low-water-quality water storage and the second low-water-quality water storage is determined as the low-water-quality water storage for the current scheduling cycle. The sum of the high-quality water storage and the low-quality water storage is determined as the predicted water storage for the current scheduling cycle.

5. The method according to claim 1, characterized in that, The acquisition of the air conditioning cooling water demand and low water quality water demand of the commercial complex for the current scheduling cycle specifically includes: Based on the historical visitor flow data of the commercial complex, the visitor flow for the current scheduling period is predicted, and combined with the preset per capita toilet flushing water consumption, the predicted toilet flushing water demand is calculated. Based on the weather data of the current scheduling cycle, calculate the water demand for air conditioning cooling and the water demand for greening irrigation. The weather data includes temperature data, rainfall, and evaporation. The sum of the predicted toilet flushing water demand and the greening irrigation water demand is determined as the low water quality water demand.

6. The method according to any one of claims 1 to 5, characterized in that, After obtaining the air conditioning cooling water demand, low water quality water demand, and predicted water storage for the next scheduling cycle, the method further includes: If, in the next scheduling cycle, the high-quality water storage is greater than or equal to the air conditioning cooling water demand, and the low-quality water storage is greater than or equal to the low-quality water demand, then a conventional rainwater utilization strategy will be implemented in the current scheduling cycle. The conventional rainwater utilization strategy includes: The high-quality water storage capacity meets the cooling water requirements of the air conditioner. The low-quality water storage capacity is used to meet the low-quality water demand.

7. The method according to any one of claims 1 to 5, characterized in that, After determining the difference between the predicted water storage and the minimum water demand as the remaining water storage for the current scheduling cycle, the method further includes: Recalculate the predicted water storage for the next scheduling cycle, and determine whether the high water quality water storage for the next scheduling cycle is less than the air conditioning cooling water demand for the next scheduling cycle, and whether the low water quality water storage for the next scheduling cycle is less than the low water quality water demand for the next scheduling cycle. If the high-quality water storage is greater than or equal to the air conditioning cooling water demand and the low-quality water storage is greater than or equal to the low-quality water demand, then the conventional rainwater utilization strategy will be implemented in the next scheduling cycle. If the high-quality water storage is less than the air conditioning cooling water demand, and / or the low-quality water storage is less than the low-quality water demand, then calculate the first difference between the air conditioning cooling water demand and the high-quality water storage, and / or the second difference between the low-quality water demand and the low-quality water storage. A supplementary water volume equal to the first difference and / or the second difference shall be drawn from the municipal water supply system.

8. A rainwater management device, characterized in that, The rainwater dispatching device includes: one or more processors and a memory; the memory is coupled to the one or more processors, the memory is used to store computer program code, the computer program code including computer instructions, and the one or more processors call the computer instructions to cause the rainwater dispatching device to perform the method as described in any one of claims 1-7.

9. A computer-readable storage medium comprising instructions, characterized in that, When the instruction is executed on the rainwater dispatching device, the rainwater dispatching device performs the method as described in any one of claims 1-7.

10. A computer program product, characterized in that, When the computer program product is run on the rainwater dispatching device, the rainwater dispatching device performs the method as described in any one of claims 1-7.

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