Intelligent irrigation and drainage control system for bidirectional flow channel pump station based on digital twinning

Abstract

The invention belongs to key test equipment in an agricultural water-saving irrigation and sprinkling irrigation system, and provides an intelligent irrigation and drainage control system for a bidirectional flow channel pump station based on digital twinning. According to the system, accurate regulation and control and intelligent irrigation and drainage of the field water level in the rice planting process are achieved by integrating data such as soil humidity, weather and pump station states and combining the digital twinborn technology, the Internet of Things technology and the intelligent control technology. The system comprises a bidirectional flow channel pump station intelligent irrigation and drainage system, an environment monitoring system and an Internet of Things management system. Multiple irrigation and drainage modes are supported, and remote control can be achieved. The system can virtually display and simulate the growth environment of rice, predict the water demand, optimize the irrigation and drainage strategy and realize'on-demand water distribution '. The method is combined with a field water level prediction formula, the accuracy of water level control is further improved, the problems that a traditional pump station is slow in response and poor in flexibility are solved, and the water resource utilization efficiency and the rice yield are improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of agricultural irrigation and drainage and intelligent control, and particularly relates to an intelligent irrigation and drainage control system for a two-way flow channel pump station based on digital twinning. TECHNICAL BACKGROUND

[0002] With the further combination of information technology and agricultural production, smart agriculture has emerged and injected strong impetus into the transformation and upgrading and high-quality development of modern agriculture in China. Smart agriculture is to apply Internet of Things technology to traditional agriculture, and to control agricultural production through mobile platforms or computer platforms by using sensors and software.

[0003] As a key facility for irrigation and drainage combination, the two-way flow channel pump station needs to be intelligently upgraded to realize precise regulation and control to cope with the multiple challenges of water resource shortage, climate change and efficient water use in agriculture. The traditional two-way flow channel pump station relies on manual experience or simple threshold control, and has problems such as response lag, insufficient flexibility of irrigation and drainage, and lack of real-time integration of soil moisture, weather, and pump station state data, which cannot cope with the strong coupling of water level and flow in the two-way flow channel. To solve the above problems, an intelligent irrigation and drainage control system for a two-way flow channel pump station based on digital twinning and its implementation method are proposed, which aims to dynamically adjust the operation mode of the pump station according to the crop water requirement law, soil moisture, and weather data, and realize "water distribution on demand" by combining Internet of Things technology. SUMMARY

[0004] The application provides an intelligent control system for a two-way flow channel pump station based on digital twinning, which can integrate soil moisture, weather, and pump station state data to realize accurate irrigation and drainage, and overcomes the technical problems of response lag, insufficient flexibility of irrigation and drainage, and dependence on manual experience of traditional two-way flow channel pump stations, which cannot realize accurate irrigation.

[0005] To achieve the above purpose, the technical scheme provided by the application is as follows:

[0006] An intelligent irrigation and drainage control system for a two-way flow channel pump station based on digital twinning, comprising:

[0007] The two-way flow channel pump station realizes irrigation and drainage during rice planting, that is, the water level in the paddy field is maintained within a certain range to meet the water requirement of rice growth on the premise of saving water, and the control of the two-way flow channel pump station is realized through intelligent and remote control, which is convenient and fast.

[0008] Further, the two-way flow channel pump station comprises a first valve, a second valve, a third valve, a fourth valve, a fifth valve, a water pump, a first pressure gauge, a second pressure gauge, a frequency conversion cabinet, and a first water conveying pipeline.

[0009] The bidirectional flow channel pump station control end is used for controlling the bidirectional flow channel pump station gate, and comprises intelligent control and manual control, so that the bidirectional flow channel pump station control is diversified.

[0010] Further, the bidirectional flow channel pump station control end comprises a computer control end, a mobile phone control end and a physical valve switch control.

[0011] The environment monitoring system comprises a weather monitoring device, a field water level sensor and a camera.

[0012] The Internet of Things management system comprises a digital twin system, a data collection system, an intelligent monitoring system and an intelligent control system.

[0013] Further, the Internet of Things management system comprises a first water level sensor, a camera, a small weather station, a control center, a bidirectional flow channel pump station, a digital twin display screen, a computer control end, a mobile phone control end, a second water pipeline, a second water level sensor, a third water level sensor, a fourth water level sensor, a sixth valve, a seventh valve, an eighth valve, a ninth valve and a fifth water level sensor.

[0014] In the technical scheme provided in the application, the bidirectional flow channel pump station, the fourth water level sensor, the sixth valve, the seventh valve, the eighth valve, the ninth valve, the test field and the water source in the Internet of Things management system are connected by the second water pipeline.

[0015] Further, the connection mode of the bidirectional flow channel pump station is characterized in that a first valve, a second valve, a third valve, a fourth valve, a fifth valve, a water pump, a first pressure gauge and a second pressure gauge are connected by a first water pipeline.

[0016] Further, the test field is subdivided into a first rice field, a second rice field, a third rice field and a fourth rice field, the first rice field is provided with the first water level sensor, the second rice field is provided with the third water level sensor, the third rice field is provided with the fourth water level sensor, the fourth rice field is provided with the second water level sensor, and the river water source is provided with the fifth water level sensor.

[0017] Further, the irrigation and drainage water of the first rice field is controlled by the seventh valve, the irrigation and drainage water of the second rice field is controlled by the eighth valve, the irrigation and drainage water of the third rice field is controlled by the ninth valve, and the irrigation and drainage water of the fourth rice field is controlled by the sixth valve.

[0018] Further, the camera, the small weather station, the control center, the frequency conversion cabinet in the two-way flow channel pump station, the digital twin display screen, the computer control end and the mobile phone control end are connected through wireless signal transmission.

[0019] In the technical scheme provided in the application, the working principle of the two-way flow channel pump station intelligent irrigation and drainage control system based on digital twin is that the camera monitors the growth status of rice, and transmits signals to the control center; the small weather station monitors local weather and transmits signals to the control center; the fifth water level sensor detects the water level in the river, the first water level sensor detects the water level in the first paddy field, the third water level sensor detects the water level in the second paddy field, the fourth water level sensor detects the water level in the third paddy field, and the second water level sensor detects the water level in the fourth paddy field; signals are transmitted to the control center; and the control center determines whether to open the gate or start the two-way flow channel pump station by processing the signals.

[0020] Further, the control center simultaneously transmits signal results to the digital twin display screen, the computer control end and the mobile phone control end, so that managers can observe; managers can also issue commands to start or close the valve through the computer control end and the mobile phone control end; the computer control end and the mobile phone control end transmit the commands to the control center, and the control center controls the valve switch.

[0021] Further, the control center can control the frequency conversion cabinet of the two-way flow channel pump station, and the frequency conversion cabinet starts and stops the water pump or schedules the gears of the water pump by processing signals.

[0022] Further, the control center controls the first valve, the second valve, the third valve, the fourth valve and the fifth valve in the two-way flow channel pump station to realize irrigation and drainage mode conversion through different switch modes between the valves, and to realize irrigation by conveying water flow from the first water conveying pipe to the second water conveying pipe, or to realize drainage by conveying water flow from the second water conveying pipe to the first conveying pipe.

[0023] Further, the control center controls the opening and closing of the sixth valve, the seventh valve, the eighth valve and the ninth valve to realize different irrigation and drainage treatments for different paddy fields, and truly realizes high-precision regulation and control and water distribution on demand.

[0024] In the technical scheme provided in the application, the two-way flow channel pump station can realize the flow of water flow in different directions by simply controlling the switch combination of different gates, and realize four modes of self-drainage, self-irrigation, pump drainage and pump irrigation.

[0025] Further, the first water pipeline is designed as a "day" shape, which avoids the problem that the direction of the water pump needs to be adjusted to achieve the problem when the working condition changes. The filter screen at the pipe opening of the first water pipeline can effectively filter the silt and impurities carried by the flowing water, avoiding the pipe blockage caused by the accumulation of impurities. The water pump is a self-priming pump, which can automatically remove the gas in the suction pipe, avoiding the problem of backflow caused by gas in the pipe when the double-flow channel pump station is used for irrigation and drainage.

[0026] Further, the self-irrigation and self-drainage of the double-flow channel pump station is mainly used for the water level difference between the water level measured by the first water level sensor in the first rice field in the test field and the water level measured by the fifth water level sensor in the water source exceeding the set threshold. The control center controls the opening of the seventh valve. If the water level in the rice field is high, the control center controls the double-flow channel pump station to open the first valve, the third valve and the fifth valve, and closes the second valve and the fourth valve, and starts the self-irrigation mode. If the water level in the rice field is low, the control center controls the double-flow channel pump station to open the second valve, the third valve and the fourth valve, and closes the first valve and the fifth valve, and starts the self-drainage mode. The corresponding second rice field, third water level sensor and eighth valve, third rice field, fourth water level sensor and ninth valve, and fourth rice field, second water level sensor and sixth valve also have this working principle.

[0027] In the technical scheme provided by the application, the weather monitoring device is mainly used for collecting weather data such as air temperature and humidity, wind speed, solar net radiation and rainfall in the rice field. The field water level sensor is mainly used for collecting field water level data. The camera is mainly used for collecting data of the growth cycle of rice.

[0028] Further, the field water level sensor includes a first water level sensor, a second water level sensor, a third water level sensor, a fourth water level sensor and a fifth water level sensor. The first water level sensor is mainly used for collecting the field water level of the first rice field, the second water level sensor is mainly used for collecting the field water level of the fourth rice field, the third water level sensor is mainly used for collecting the field water level of the second rice field, the fourth water level sensor is mainly used for collecting the field water level of the third rice field, and the fifth water level sensor is mainly used for collecting the water level of the water source. Whether irrigation and drainage are needed is determined by comparing the water level of the water source and the field water level.

[0029] In the technical scheme provided by the application, the digital twin system mainly virtualizes the rice field scene through the collected actual data, realizes virtual field rice population display, virtual rice single plant twin display, virtual rice dynamic growth period form display, reflects the state of the displayed physical object, and thus realizes rapid and accurate decision-making.

[0030] Further, the digital twin system is used for dynamic display of a virtual scene, including virtual scene map display, virtual field rice population display, virtual rice single plant twin display, virtual rice dynamic growth period form display, virtual irrigation equipment display, virtual meteorological equipment display, virtual soil equipment display, etc., and the virtual scene display is mainly displayed on a digital twin display screen. In addition, the irrigation time is determined through dynamic simulation of the virtual scene, such as virtual irrigation control and future meteorological changes, and is continuously adjusted and changed to achieve a prediction of the future growth state of the rice, and the calculation is fed back to the control center, and the control center issues an instruction on whether to irrigate or not to the two-way flow channel pump station, so as to ensure that the rice grows well through the combination of virtual and real.

[0031] In the technical scheme provided by the application, the data collection system is used for collecting and processing data related to the two-way flow channel pump station and the environmental monitoring system. The intelligent monitoring system is used for monitoring the two-way flow channel pump station and the environmental monitoring system. The intelligent control system is used for controlling and managing the two-way flow channel pump station and the environmental monitoring system.

[0032] Further, the data collection system includes a control center, a computer control end and a mobile phone control end, and is mainly used for collecting and managing data related to the two-way flow channel pump station and the environmental monitoring system. The intelligent monitoring system includes a control center, a computer control end and a mobile phone control end, and is mainly used for monitoring the two-way flow channel pump station and the environmental monitoring system according to the data obtained by the data collection system. The intelligent control system includes a control center, and is mainly used for controlling the two-way flow channel pump station and the environmental monitoring system.

[0033] In the technical solutions provided in the application, the implementation method of the intelligent irrigation and drainage control system of the two-way flow channel pump station based on digital twinning is that the field water level sensor sends field water level information to the control center in real time, the small weather station monitors and collects main meteorological data such as air temperature and humidity, wind speed, solar radiation and rainfall of the rice field in real time and transmits the data to the control center, the camera monitors and collects data such as the growth state and cycle of the rice in real time and transmits the data to the control center, the control center collects, collates and analyzes various data and sends the data to the computer control end and the mobile phone control end, the computer control end performs digital twinning simulation prediction according to the collected data, simultaneously transmits and displays the scene on the digital twinning display screen, judges the water required by the rice in the current environment, feeds back to the control center, the control center judges whether the field water level meets the threshold range, if the field water level is lower than the threshold range, the control center controls the two-way flow channel pump station to open the first valve, the third valve, the fifth valve, the water pump and the corresponding valve of the field requiring irrigation, simultaneously closes the second valve and the fourth valve, and starts the pump pressure irrigation mode. If the field water level is higher than the threshold range, the control center controls the two-way flow channel pump station to open the second valve, the third valve, the fourth valve, the water pump and the corresponding valve of the field requiring drainage, simultaneously closes the first valve and the fifth valve, and starts the pump pressure drainage mode.

[0034] The application further provides a calculation formula for predicting the field water level by the two-way flow channel pump station.

[0035]

[0036] The derivation process is as follows:

[0037] Let the total flow in the pipe be Q1, the pipe cross-sectional area be A1, and the water flow velocity in the pipe be V1, and Q1=A1V1 is obtained.

[0038]

[0039] Let the total flow required in the field be Q2, the bottom area of the rice field be A2, and the water level change speed in the field be V2, and Q2=A2V2 is obtained.

[0040]

[0041] Considering that the field water level is easily affected by the external environment and has a certain error, a correction coefficient ξ is added, that is, the field water level change speed is ξV2.

[0042]

[0043] According to the law of conservation of mass, Q1=Q2 is obtained.

[0044] Let the initial value of the field water level be h1, the ending value of the field water level be H, and the time required for the water level to reach the expected height be T, and h1+TξV2=H is obtained.

[0045]

[0046] Where ΔH=(H-h1), the relationship between the field water level height and time is obtained by rearranging:

[0047]

[0048] Compared with existing technologies, this invention uses technologies such as the Internet of Things, big data, and cloud computing to analyze and judge the different water requirements of rice growth due to the influence of various key factors. Finally, it achieves precise irrigation and drainage by controlling bidirectional flow channel pumping stations, making good use of every water resource and truly achieving "water allocation on demand". Ultimately, it achieves the dual goals of water-saving irrigation and increased rice yield. Attached Figure Description

[0049] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0050] Figure 1 This is a flowchart of an intelligent irrigation and drainage control system for a bidirectional flow channel pumping station based on digital twins, according to one embodiment of the present invention.

[0051] Figure 2 This is a diagram of a bidirectional flow channel pump station system in one embodiment of the present invention.

[0052] Figure 3 This is a diagram of an Internet of Things (IoT) management system in one embodiment of the present invention.

[0053] Figure 4 This is a schematic diagram of a computer-based water level monitoring interface in one embodiment of the present invention.

[0054] Figure 5 This is a mobile phone switch control interface in one embodiment of the present invention.

[0055] In the diagram, 1. Valve No. 1, 2. Valve No. 2, 3. Valve No. 3, 4. Valve No. 4, 5. Valve No. 5, 6. Water pump, 7. First pressure gauge, 8. Second pressure gauge, 9. Variable frequency drive cabinet, 10. No. 1 water supply pipeline, 11. Experimental field, 12. Water source, 13. No. 1 water level sensor, 14. Camera, 15. Small weather station, 16. Control center, 17. Two-way flow channel pump station, 18. Digital twin display screen, 19. Computer control terminal, 20. Mobile phone control terminal, 21. No. 1 paddy field, 22. No. 2 paddy field, 23. No. 3 paddy field, 24. No. 2 water supply pipeline, 25. No. 2 water level sensor, 26. No. 3 water level sensor, 27. No. 4 water level sensor, 28. No. 6 valve, 29. No. 7 valve, 30. No. 8 valve, 31. No. 9 valve, 32. No. 5 water level sensor, 33. No. 4 paddy field. Detailed Implementation

[0056] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0057] like Figure 1 As shown in the figure, an intelligent irrigation and drainage control system for a bidirectional channel pumping station based on digital twins in one embodiment of the present invention includes a bidirectional channel pumping station, an environmental monitoring system, and an Internet of Things management system.

[0058] like Figure 3 and Figure 2 As shown, the connection method of the intelligent irrigation and drainage control system for the bidirectional flow channel pump station based on digital twin is as follows: the bidirectional flow channel pump station 17, the No. 4 water level sensor 27, the No. 6 valve 28, the No. 7 valve 29, the No. 8 valve 30, the No. 9 valve 31, the experimental field 11, and the water source 12 in the Internet of Things management system are connected by the No. 2 water transmission pipe 24.

[0059] Furthermore, the connection method of the bidirectional flow channel pump station 17 is characterized in that valve 1, valve 2, valve 3, valve 4, valve 5, water pump 6, first pressure gauge 7, and second pressure gauge 8 are connected by water supply pipe 10. Water supply pipe 10 is externally connected to water supply pipe 24, and the bidirectional flow channel pump station is connected to the Internet of Things management system as a whole.

[0060] Further, the test field 11 is subdivided into the first rice field 21, the second rice field 22, the third rice field 23, and the fourth rice field 33, wherein the first rice field 21 is provided with the first water level sensor 13, the second rice field 22 is provided with the third water level sensor 26, the third rice field 23 is provided with the fourth water level sensor 27, the fourth rice field 33 is provided with the second water level sensor 25, and the river water source 12 is provided with the fifth water level sensor 32.

[0061] Further, the irrigation and drainage of the first rice field 21 is controlled by the seventh valve 29, the irrigation and drainage of the second rice field 22 is controlled by the eighth valve 30, the irrigation and drainage of the third rice field 23 is controlled by the ninth valve 31, and the irrigation and drainage of the fourth rice field 33 is controlled by the sixth valve 28.

[0062] Further, the camera 14, the small weather station 15, the control center 16, the frequency conversion cabinet 9 in the two-way flow channel pump station 17, the digital twin display screen 18, the computer control end 19, and the mobile phone control end 20 are connected through wireless signal transmission.

[0063] Further, the working principle of the two-way flow channel pump station intelligent irrigation and drainage control system based on digital twin is that the camera 14 monitors the growth status of rice, and transmits signals to the control center 16; the small weather station 15 monitors local weather and transmits signals to the control center 16; the fifth water level sensor 32 detects the water level in the river 12, the first water level sensor 13 detects the water level in the first rice field 21, the third water level sensor 26 detects the water level in the second rice field 22, the fourth water level sensor 27 detects the water level in the third rice field 23, and the second water level sensor 25 detects the water level in the fourth rice field 33; signals are transmitted to the control center 16; and the control center 16 judges whether to open the gate or start the two-way flow channel pump station 17 by processing the signals.

[0064] Further, the control center 16 simultaneously transmits signal results to the digital twin display screen 18, the computer control end 19, and the mobile phone control end 20 for observation by the manager; the manager can also issue a command to start or close the valve through the computer control end 19 and the mobile phone control end 20; the computer control end 19 and the mobile phone control end 20 transmit the command to the control center 16, and the control center 16 controls the valve switch.

[0065] Further, the control center 16 can control the frequency conversion cabinet 9 of the two-way flow channel pump station 17, and the frequency conversion cabinet 9 starts and stops the water pump 6 or schedules the gears of the water pump 6 by processing signals.

[0066] Further, the control center 16 controls the first valve 1, the second valve 2, the third valve 3, the fourth valve 4, and the fifth valve 5 in the bidirectional flow channel pump station 17 according to the calculation result, realizes the irrigation and drainage mode conversion through different opening and closing modes of the valves, and delivers the water flow through the first water delivery pipe 10 to the second water delivery pipe 24 to realize irrigation, or delivers the water flow from the second water delivery pipe 24 to the first water delivery pipe 10 to realize drainage.

[0067] Further, the control center 16 controls the sixth valve 28, the seventh valve 29, the eighth valve 30, and the ninth valve 31 to realize different irrigation and drainage treatments of different rice fields, and truly realizes high-precision regulation and control and water distribution according to needs.

[0068] Specifically, as shown in Figure 3 The bidirectional flow channel pump station 17 mainly realizes irrigation and drainage of the rice field, and the control end of the bidirectional flow channel pump station mainly realizes control of the bidirectional flow channel pump station 17 through intelligentization and remote control, so that the control and management of irrigation and drainage are convenient and efficient. The control end of the bidirectional flow channel pump station includes a computer control end 19, a mobile phone control end 20, and a physical valve switch control.

[0069] Specifically, the control center 16 judges and analyzes the soil water requirement according to the information collected and transmitted by the sensor, issues an instruction to the computer control end 19 and the mobile phone control end 20, and automatically controls the valve switch of the bidirectional flow channel pump station through the computer control end 19 and the mobile phone control end 20 to realize automatic irrigation and drainage. When the soil water content is less than the set threshold, irrigation is started, and when the soil water content reaches the set threshold, irrigation is stopped. When the soil water content is higher than the set threshold, drainage is performed, so as to achieve the purposes of water saving and precise irrigation.

[0070] Specifically, as shown in Figure 2As shown, the bidirectional flow channel pump station 17 includes a first valve 1, a second valve 2, a third valve 3, a fourth valve 4, a fifth valve 5, a water pump 6, a first pressure gauge 7, a second pressure gauge 8, a frequency conversion cabinet 9, a water pipeline 10, a test field 11, and a water source 12. The bidirectional flow channel pump station has four working conditions, namely, self-flow irrigation, self-flow drainage, pump pressure irrigation, and pump pressure drainage. When the water level of the water source 12 is higher than the water level of the test field 11, the first valve 1, the third valve 3, and the fifth valve 5 are opened, and the second valve 2 and the fourth valve 4 are closed, and the water flows from the water source 12 to the test field 11 through the first water pipeline 10, the first valve 1, the third valve 3, the fifth valve 5, and the second valve 2, which is self-flow irrigation. When the water level of the test field 11 is higher than the water level of the water source 12, the second valve 2, the third valve 3, and the fourth valve 4 are opened, and the first valve 1 and the fifth valve 5 are closed, and the water flows from the test field 11 to the water source 12 through the first water pipeline 10, the second valve 2, the third valve 3, and the fourth valve 4, which is self-flow drainage. When the water level of the water source 12 is higher than the water level of the test field 11, the water pump 6, the first valve 1, the third valve 3, and the fifth valve 5 are opened, and the second valve 2 and the fourth valve 4 are closed, and the water flows from the water source 12 to the test field 11 through the first water pipeline 10, the first valve 1, the third valve 3, the water pump 6, and the fifth valve 5, which is pump pressure irrigation. When the water level of the test field 11 is higher than the water level of the water source 12, the water pump 6, the second valve 2, the third valve 3, and the fourth valve 4 are opened, and the first valve 1 and the fifth valve 5 are closed, and the water flows from the test field 11 to the water source 12 through the first water pipeline 10, the second valve 2, the water pump 6, the third valve 3, and the fourth valve 4, which is pump pressure drainage. The first water pipeline 10 is designed in a "day" shape to avoid the problem that the direction of the water pump needs to be adjusted when the working condition of the bidirectional flow channel pump station changes. The water pump 6 is a self-priming pump that can automatically remove the gas in the suction pipe to avoid the backflow phenomenon when the bidirectional flow channel pump station is working, which greatly improves the work efficiency. The frequency conversion cabinet 9 mainly controls the water pump 6, which can adjust the running state of the motor according to the change of the water pump load to achieve the effect of energy saving and consumption reduction, and ensure the safe and stable operation of the pump station. The first water pipeline 10 has a filter screen at the pipe opening to effectively filter the impurities such as silt carried by the water flow, avoid the pipe blockage caused by the accumulation of impurities, and analyze the change of the pipeline pressure according to the values of the first pressure gauge 7 and the second pressure gauge 8 to determine whether there is a blockage phenomenon in the pipeline, which is convenient for management and maintenance.

[0071] Further, the bidirectional flow channel pump station 17 realizes remote control through a computer terminal control 19 and a mobile phone terminal control 20, such as Figure 5The mobile phone end switch control interface is shown, which can directly realize the use of a mobile phone to control the opening and closing of the two-way flow channel pump station gate, which is efficient and convenient. Of course, in order to avoid the problem of poor network state and the invalidation of the network end remote control mode, the two-way flow channel pump station 17 also increases the manual control mode, which uses the manual mode to open and close the two-way flow channel pump station, which makes the control of the two-way flow channel pump station diversified, realizes double protection, and greatly improves the management efficiency.

[0072] As shown in Figure 1 , the environmental monitoring system includes a weather monitoring device, a water level sensor, and a camera. Through the environmental monitoring system, the growth environment of rice in the paddy field can be monitored, and the environmental parameters of the location can be collected and sent to the Internet of Things management system in real time. The Internet of Things management system processes and analyzes these parameters, calculates the water demand of rice growth under the current environment, and compares it with the field water level to determine whether irrigation is needed and sends a signal to the two-way flow channel pump station to achieve intelligent and precise purposes and to maintain the water demand of rice growth to achieve the purpose of water saving.

[0073] Specifically, as shown in Figure 3 , the weather monitoring device includes a small weather station 15, which is mainly used to collect main weather data such as air temperature and humidity, wind speed, solar radiation, and rainfall in the paddy field. The field water level sensor includes a first water level sensor 13, a second water level sensor 25, a third water level sensor 26, a fourth water level sensor 27, and a fifth water level sensor 32. The first water level sensor 13 is mainly used to collect the field water level of the first paddy field 21, the second water level sensor 25 is mainly used to collect the field water level of the fourth paddy field 33, the third water level sensor 26 is mainly used to collect the field water level of the second paddy field 22, the fourth water level sensor 27 is mainly used to collect the field water level of the third paddy field 23, and the fifth water level sensor 32 is mainly used to collect the water level of the water source 12. By comparing the water level of the water source with the field water level, it can be determined whether irrigation is needed, as shown in Figure 4 , which is a real-time water level monitoring interface that can monitor the water level and water quantity in real time. The camera 14 is mainly used to shoot the growth state of rice in the paddy field and the weather conditions, monitor the rice conditions in real time, and send the parameters to the Internet of Things management system in real time. Through the Internet of Things management system, the user can clearly understand the growth of rice, weather changes, and other conditions.

[0074] As shown in Figure 1 , the Internet of Things management system includes a digital twin system, a data collection system, an intelligent monitoring system, and an intelligent control system. Through the Internet of Things management system, the two-way flow channel pump station and the environmental monitoring system can be collected, monitored, and controlled, improving the efficiency of management and control.

[0075] Specifically, the digital twin system is mainly used for dynamic display of a virtual scene, including virtual scene map display, virtual paddy field rice population display, virtual rice single plant twin display, virtual rice dynamic growth period form display, virtual irrigation and drainage equipment display, virtual meteorological equipment display, virtual soil equipment display, and the like, as shown in FIG. 8. Figure 3 In addition, the virtual scene display mainly displays on the digital twin display screen 18. In addition, the irrigation and drainage time is determined by dynamic simulation of the virtual scene, such as virtual irrigation and drainage control, future meteorological changes, and the like, and is constantly adjusted and changed to achieve a prediction of the future growth state of the rice, and the calculation is fed back to the control center 16, and the control center 16 issues an instruction of whether to irrigate and drain to the two-way flow channel pump station, to ensure that the rice grows well through virtual-real combination.

[0076] Further, as shown in FIG. 9, Figure 3 The data collection system mainly collects and manages relevant data of the two-way flow channel pump station 17 and the environmental monitoring system. The intelligent monitoring system mainly monitors the two-way flow channel pump station 17 and the environmental monitoring system according to the data obtained by the data collection system. The intelligent control system mainly controls the two-way flow channel pump station 17 and the environmental monitoring system.

[0077] As shown in FIG. 10, Figure 3 The main implementation method of the two-way flow channel pump station intelligent irrigation and drainage control system based on digital twin in an embodiment of the present application is as follows:

[0078] Specifically, generally, when the water level difference between the water level measured by the first water level sensor 13 in the first rice field 21 in the test field 11 and the water level measured by the fifth water level sensor 32 in the water source 12 exceeds the set threshold value, the control center 16 controls the seventh valve 29 to open. If the water level in the rice field is high, the control center 16 controls the two-way flow channel pump station to open the first valve 1, the third valve 3 and the fifth valve 5, and simultaneously close the second valve 2 and the fourth valve 4, to start the self-flow irrigation mode. If the water level in the rice field is low, the control center controls the two-way flow channel pump station to open the second valve 2, the third valve 3 and the fourth valve 4, and simultaneously close the first valve 1 and the fifth valve 5, to start the self-flow drainage mode. The second rice field 22, the third rice field 23 and the fourth rice field 33, and the third water level sensor 26, the fourth water level sensor 27 and the second water level sensor 25 matched therewith, and the eighth valve 30, the ninth valve 31 and the sixth valve 28 matched therewith also have this working principle.

[0079] Further, the field water level sensor transmits field water level information to the control center 16 in real time, the small weather station 15 monitors and collects main meteorological data such as air temperature and humidity, wind speed, solar radiation, and rainfall in the rice field in real time and transmits them to the control center 16, the camera monitors and collects data such as the growth state and cycle of the rice in real time and transmits them to the control center 16, the control center 16 collects, collates, analyzes and transmits various data to the computer control end 19 and the mobile phone control end 20, wherein the computer control end 19 performs digital twin simulation prediction according to the collected data, simultaneously transmits and displays the scene on the digital twin display screen 18, judges the water required by the rice in the current environment, feeds back to the control center 16, and the control center judges whether the field water level meets the threshold range and gives the threshold range. If the field water level is lower than the threshold given by it, the control center 16 controls the two-way flow channel pump station 17 to open the first valve 1, the third valve 3, the fifth valve 5, the water pump 6 and the corresponding valve of the field to be irrigated, and at the same time closes the second valve 2 and the fourth valve 4, and starts the pump pressure irrigation mode. If the field water level is higher than the threshold given by it, the control center 16 controls the two-way flow channel pump station 17 to open the second valve 2, the third valve 3, the fourth valve 4, the water pump 6 and the corresponding valve of the field to be drained, and at the same time closes the first valve 1 and the fifth valve 5, and starts the pump pressure drainage mode. It truly realizes intelligent and accurate irrigation and drainage, realizes rice "on-demand water distribution", realizes energy-saving irrigation, and at the same time greatly reduces the labor cost.

[0080] Further, the derivation process of the calculation formula for predicting the field water level by the two-way flow channel pump station 17 is as follows:

[0081] Let the total flow rate in the pipe be Q1, the cross-sectional area of the pipe be A1, and the water flow rate in the pipe be V1, then

[0082]

[0083] Let the total flow rate required in the field be Q2, the bottom area of the rice field be A2, and the speed of change of the field water level be V2, then

[0084]

[0085] Considering that the field water level is easily affected by the external environment and has a certain error, a correction coefficient ξ is added, that is, the speed of change of the field water level is ξV2.

[0086]

[0087] According to the law of conservation of mass, Q1=Q2 is obtained.

[0088] Let the initial value of the field water level be h1, the final value of the field water level be H, and the time required for the water level to reach the expected height be T, then

[0089]

[0090] The control center 16 combines the derived formulas The accuracy of the effective prediction of the water level can be further improved to achieve the purpose of accurate control of the water level. Wherein, Delta H is the water level change, V1 is the water flow speed in the pipeline, T is the time, A1 is the pipeline cross-sectional area, and A2 is the paddy field bottom area.

[0091] It is apparent to those skilled in the art that the present application is not limited to the details of the foregoing exemplary embodiments, and that the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the present application being defined by the appended claims rather than by the foregoing description, and it is intended that all changes which come within the meaning and range of equivalency of the claims are embraced therein. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

[0092] Furthermore, it should be understood that although the present specification is described in terms of embodiments, not every embodiment according to the present specification need necessarily include every technological feature or combination of technological features. Such descriptions and representations are used by applicants and others to facilitate understanding of the specification. These descriptions and representations are not intended to define or limit the scope or functionality of the embodiments. Moreover, although the description herein includes many specifics, these specifics need not be construed as limiting the scope of the embodiments but for use in clarifying the description and examples. Accordingly, one skilled in the art will readily recognize that the application can be practiced with material other than those explicitly described in the present specification. It is therefore evident that there is a combination of features that are already known in the art which, when combined with or substituted for the features specifically described herein, can be used to implement the application. It should also be understood that, in this application, relative terms are used to generally describe relationships between elements.

Claims

1. A digital-twin-based intelligent irrigation and drainage control system for a two-way flow channel pump station, characterized in that, Include: Bidirectional flow channel pump station, the bidirectional flow channel pump station includes a valve, a second valve, a third valve, a fourth valve, a fifth valve, a water pump, a first pressure gauge, a second pressure gauge, a frequency conversion cabinet, a first water pipeline; Bidirectional flow channel pump station control end, the bidirectional flow channel pump station control end is used for the control of bidirectional flow channel pump station valve, including intelligent control and manual control, the intelligent control end is computer control end and mobile phone control end. Environmental monitoring system, the environmental monitoring system includes weather monitoring equipment, field water level sensor, camera; Internet of Things management system, the Internet of Things management system includes digital twin system, data collection system, intelligent monitoring system and intelligent control system.

2. The digital-twin-based intelligent irrigation and drainage control system for a two-way flow channel pump station according to claim 1, characterized in that, The bidirectional flow channel pump station realizes the flow of water flow in different directions by simply controlling the opening and closing combination of different gates, realizes four modes of self-draining, self-irrigation, pump drainage and pump irrigation;The first water pipeline is in the shape of a day, which avoids the problem that the direction of the water pump needs to be adjusted when the working condition changes;The filter screen at the pipe opening of the first water pipeline can effectively filter the silt carried by the flowing water, preventing pipe blockage caused by impurities accumulation;The water pump is a self-priming pump that can automatically remove the gas in the suction pipe, avoiding the problem of backflow caused by gas in the pipe during the drainage and irrigation work of the bidirectional flow channel pump station;The first pressure gauge and the second pressure gauge analyze the change of the pipeline pressure by the change of the numerical value, and judge whether there is a blockage in the pipeline.

3. The intelligent irrigation and drainage control system based on digital twinning of bidirectional flow channel pump station according to claim 1, characterized in that, The weather monitoring equipment includes a small weather station for collecting main meteorological data such as air temperature and humidity, wind speed, solar radiation and rainfall in the rice field;The camera is used to collect data of the rice growth cycle.

4. The intelligent irrigation and drainage control system based on digital twinning of a two-way flow channel pump station according to claim 1, characterized in that, The field water level sensor includes a first water level sensor, a second water level sensor, a third water level sensor, a fourth water level sensor and a fifth water level sensor, wherein the first water level sensor is used to collect the field water level of the first rice field, the second water level sensor is mainly used to collect the field water level of the fourth rice field, the third water level sensor is used to collect the field water level of the second rice field, the fourth water level sensor is used to collect the field water level of the third rice field, and the fifth water level sensor is mainly used to collect the water level of the water source, and whether irrigation is needed is determined by comparing the water level of the water source with the field water level.

5. The digital-twin-based intelligent irrigation and drainage control system for a two-way flow channel pump station according to claim 1, characterized in that, The digital twin system includes virtual scene map display, virtual field rice population display, virtual rice single plant twin display, virtual rice dynamic growth period form display, virtual irrigation equipment display, virtual weather equipment display, virtual soil equipment display, and virtual scene display is mainly displayed on the digital twin display screen;In addition, through dynamic simulation of virtual scene, such as virtual irrigation control and future weather change, irrigation timing is determined and continuously adjusted, which achieves prediction of future growth state of rice, and according to calculation and feedback to the control center, the control center gives the bidirectional flow channel pump station an instruction whether to irrigate, through virtual and real combination, to ensure that the rice grows well.

6. The digital-twin-based intelligent irrigation and drainage control system for a two-way flow channel pump station according to claim 1, characterized in that, The data collection system comprises a control center, a computer control end and a mobile phone control end, and is mainly used for collecting and managing relevant data of the two-way flow channel pump station intelligent irrigation and drainage system and the environmental monitoring system; the intelligent monitoring system comprises the control center, the computer control end and the mobile phone control end, and is mainly used for monitoring the two-way flow channel pump station intelligent irrigation and drainage system and the environmental monitoring system according to the data collected by the data collection system; and the intelligent control system comprises the control center, and is mainly used for controlling the two-way flow channel pump station intelligent irrigation and drainage system and the environmental monitoring system.

7. The digital-twin-based intelligent irrigation and drainage control system for a two-way flow channel pump station according to claim 1, characterized in that, The main working mode of the two-way flow channel pump station self-irrigation and self-drainage is that, when the water level difference between the water level measured by the first water level sensor in the first test field and the water level measured by the fifth water level sensor in the water source exceeds a set threshold value, the control center controls the seventh valve to be opened; if the water level in the test field is high, the control center controls the two-way flow channel pump station to open the first valve, the third valve and the fifth valve, and to close the second valve and the fourth valve, so as to start the self-flow irrigation mode; if the water level in the test field is low, the control center controls the two-way flow channel pump station to open the second valve, the third valve and the fourth valve, and to close the first valve and the fifth valve, so as to start the self-flow drainage mode; the working principle is the same for the second test field, the third test field and the fourth test field.

8. The digital-twin-based intelligent irrigation and drainage control system for a two-way flow channel pump station according to claim 1, characterized in that, The implementation method of the two-way flow channel pump station intelligent irrigation and drainage control system based on digital twinning is that the field water level sensor sends the field water level information to the control center in real time, the small weather station monitors and collects the main weather data of the air temperature, humidity, wind speed, solar radiation and rainfall of the test field and transmits the data to the control center in real time, the camera monitors and collects the growth state and cycle data of the rice and transmits the data to the control center in real time, the control center collects, sorts and analyzes various data and sends the data to the computer control end and the mobile phone control end, the computer control end performs digital twinning simulation prediction according to the collected data, simultaneously transmits and displays the scene on the digital twinning display screen, judges the required water amount of the rice in the current environment, feeds back to the control center, and the control center judges whether the field water level meets the threshold value range and gives the threshold value range; if the field water level is lower than the threshold value range, the control center controls the two-way flow channel pump station to open the first valve, the third valve, the fifth valve, the water pump and the corresponding valve of the required irrigation field, and to close the second valve and the fourth valve, so as to start the pump pressure irrigation mode; if the field water level is higher than the threshold value range, the control center controls the two-way flow channel pump station to open the second valve, the third valve, the fourth valve, the water pump and the corresponding valve of the required drainage field, and to close the first valve and the fifth valve, so as to start the pump pressure drainage mode.

9. The digital-twin-based intelligent irrigation and drainage control system for a two-way flow channel pump station according to claim 1, characterized in that, The formula for predicting the field water level by the bidirectional flow channel pump station is 10. The digital-twin-based intelligent irrigation and drainage control system for a bi-directional flow channel pump station of claim 10, wherein The derivation process of the calculation formula for predicting the field water level by the two-way flow channel pump station is as follows: Let the total flow in the pipeline be Q1, the cross-sectional area of the pipeline be A1, and the water flow velocity in the pipeline be V1, so that Q1=A1V1 is obtained. Let the total flow required in the field be Q2, the bottom area of the test field be A2, and the water level change velocity in the field be V2, so that Q2=A2V2 is obtained. Considering the field water level is easily affected by the external environment, there is a certain error, increase a correction coefficient ξ, that is, the field water level change speed is ξV2. By the law of conservation of mass, Q1 = Q2 Record the initial value of the field water level as h1, record the end value of the field water level as H, the time required for the water level to reach the expected height T, get Where ΔH = (H-h1), the relationship between the change of field water level height and time is obtained:

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