Intelligent photovoltaic water lifting irrigation system with dynamic regulation and control function

Abstract

The invention discloses an intelligent photovoltaic lift irrigation system with a dynamic regulation and control function, which belongs to the technical field of agricultural and ecological irrigation and comprises a central control module, a photovoltaic module, an energy storage module, a power regulation and control module, a lift irrigation module, a weather detection module, a weather analysis module and an alarm module. By means of the mode, the power regulation and control module of the system conducts power regulation on the water lifting irrigation module according to the judgment result of the energy storage module, efficient utilization of energy is achieved, the energy-saving purpose is achieved, the weather analysis module automatically controls irrigation starting and stopping according to the precipitation amount condition, excessive irrigation is avoided, and the energy-saving effect is achieved. Meanwhile, when the weather detection module is abnormal, the electromagnetic valves at different altitudes can be adjusted, the irrigation effect is improved, and water resources are saved.

Description

Technical Field

[0001] The present invention relates to the technical fields of agriculture and ecological irrigation, and particularly relates to an intelligent photovoltaic water-lifting irrigation system with a dynamic regulation function. Background Art

[0002] In remote areas, mountainous and hilly areas, due to the inability of the urban power grid to cover, farmland cannot be irrigated, and crops can only rely on natural rainfall, resulting in very low yields. In these areas, there are rich reserves of photovoltaic resources. By using photovoltaic power generation, the irrigation problems of local residents can be well solved, which greatly promotes the increase of crop yields.

[0003] Chinese Patent with Publication No. CN112796370A discloses a photovoltaic intelligent water-lifting irrigation system based on information management and control; it includes a solar power supply system, a water-lifting and water storage system, a scheduling and water supply system, an irrigation water system, a monitoring and control system, and a metering and charging system. The water-lifting and water storage system is used to lift low-level water sources to high-level reserves. The scheduling and water supply system is used to schedule and distribute the water stored at a high level. The irrigation water system is used to irrigate vegetation or for other uses with the water from the scheduling and water supply system. The monitoring and control system is used to monitor the water demand at each point and control the water supply. The solar power supply system is used to provide electrical energy to the electrical devices of each system on-site. The metering and charging system is used to measure the water consumption and pay and collect corresponding fees.

[0004] The above technologies have the following problems: First: Since the water pump is the core component of water-lifting irrigation, it is necessary to ensure the power supply of the water pump. When the power supply of the solar power supply system is insufficient, the above technologies cannot provide enough instantaneous power, and the water-lifting pump may not be able to start normally, affecting irrigation. Second: At different heights on the mountain, the temperature and humidity at the location are different, so the required irrigation volume is also different. The above technologies do not meet the dynamic regulation of water volume, and there will be continuous water shortage in water-deficient areas, affecting the irrigation effect.

[0005] Based on this, the present invention designs an intelligent photovoltaic water-lifting irrigation system with a dynamic regulation function to solve the above problems. Summary of the Invention

[0006] In view of the above-mentioned shortcomings of the prior art, the present invention provides an intelligent photovoltaic water-lifting irrigation system with a dynamic regulation function.

[0007] To achieve the above objectives, the present invention is realized through the following technical solutions: An intelligent photovoltaic water-lifting irrigation system with a dynamic regulation function, including a central control module, and further including: Photovoltaic modules, which convert light energy into electrical energy and send it to the energy storage module; The water-lifting irrigation module receives the control information from the central control module to irrigate the irrigation area; The energy storage module receives and stores electricity, judges the magnitude relationship between the remaining power operation time t and the time warning threshold t, and judges whether the power regulation module needs to be started according to the judgment result; The energy storage module can also judge whether the remaining power of the system is greater than ; If it is greater, the energy storage module supplies power to the weather detection module and the weather analysis module; If it is less than or equal to, the energy storage module turns on the backup power supply to supply power to the weather detection module and the weather analysis module; The power regulation module includes: The dynamic adjustment unit is used to calculate the adjusted operation power P of the water-lifting irrigation module 调整 ; The flow feedback unit is used to judge the decline amplitude q of the water flow after the power adjustment of the water-lifting irrigation module and 0.1, and judge whether the correction unit needs to be started according to the judgment result; The correction unit is used to calculate the corrected power P 修正 ; The judgment unit receives the power P adjusted by the dynamic adjustment unit 调整 , and judges P 调整 The relationship with 0.7W, and decide whether to start the alarm module according to the judgment result; The judgment unit also receives the power P corrected by the correction unit 修正 , and judges P 修正 The relationship with 0.5W, and decide whether to start the alarm module according to the judgment result.

[0008] Furthermore, the photovoltaic module includes monocrystalline silicon solar cells, junction boxes and inverters; The monocrystalline silicon solar cells are used to receive light energy and convert the light energy into direct current and send it to the junction box; The junction box is used to receive direct current and send it to the inverter; The inverter is used to receive direct current and convert the direct current into alternating current and send it to the energy storage module for storage.

[0009] Furthermore, the water-lifting irrigation module includes a water pump, a water level sensor, a solenoid valve, a flow sensor and a power sensor. The water pump, the water level sensor, the solenoid valve, the flow sensor and the power sensor are all electrically connected to the central control module; The water pump is used to receive the control information from the central control module to start pumping the water in the reservoir to the irrigation area. The water pump also receives the power adjustment information from the power regulation module to adjust the power when pumping water; The water level sensor is fixedly installed inside the reservoir and is used to detect the volume of water inside the reservoir and upload it to the central control module; There are multiple solenoid valves, which are respectively fixedly installed on each branch pipe. The branch pipes are installed at different altitudes. The solenoid valves are used to receive the control information from the central control module and adjust the opening degree to regulate the size of the water flow; The flow sensor is fixedly installed at the water outlet of the water pump and is used to collect the water flow data information pumped by the water pump and upload it to the central control module; The power sensor is fixedly connected to the water pump and is used to collect the power data information of the water pump during operation and upload it to the central control module.

[0010] Furthermore, the detection module detects that the number of days when the backup power supply is turned on is n; If n≥2, the detection module will upload the data information to the central control module; Then the central control module controls the opening and closing degrees of the solenoid valves at different altitudes. The higher the altitude, the smaller the opening degree.

[0011] Furthermore, the judgment result of the size relationship between t1 and t0 is: If t1≤t0, the dynamic adjustment unit adjusts the power of the water pump; If t1>t0, the dynamic adjustment unit does not act.

[0012] Furthermore, in the dynamic adjustment unit, P 调整 The calculation formula is: ; P2 = ; P 调整 = P1 - P2; Among them, the rated power of the water pump is W, the current operating power is P1, the speed adjustment ratio coefficient is k, and P2 is the power adjustment amount.

[0013] Furthermore, in the correction unit, P 修正 The calculation formula is: P4 = ; The value of: , then = 1; , then = 1.5; , then = 2; P 修正 = P 调整+P4; Wherein, is an adjustment coefficient, and P4 is a correction adjustment amount.

[0014] Furthermore, the judgment unit judges the relationship between P 调整 and 0.7W: If P 调整 > 0.7W, then the flow feedback unit detects the relationship between the decrease amplitude q of the flow rate after adjustment and 0.1; If q < 0.1, then P4 = 0, and the correction unit has no action; If q ≥ 0.1, then the correction unit performs power correction; If P 调整 ≤ 0.7W, then the judgment unit sends a signal to the alarm module.

[0015] Furthermore, the judgment unit judges the relationship between P 修正 and 0.5W: If P 修正 > 0.5W, then there is no action; If P 修正 ≤ 0.5W, then the judgment unit sends a signal to the alarm module; Furthermore, the weather detection module is wirelessly connected to the meteorological bureau for detecting weather data information and uploading it to the weather analysis module; The weather analysis module receives the weather data information and detects the relationship between m and M, where m is the precipitation and M is the precipitation threshold; If m ≥ M, then the central control module controls the water pump to close and stop irrigation; If m < M, then normal irrigation is carried out; Compared with the prior art, the beneficial effects of the present invention are: 1. The present invention can match different power demands of electrical devices under different working conditions according to different electrical devices, ensuring the normal startup of electrical equipment; 2. The power regulation module of the present system adjusts the power of the water lifting and irrigation module according to the judgment result of the energy storage module, realizing the efficient utilization of energy and achieving the purpose of energy saving; 3. The water lifting and irrigation module accurately controls the water flow rate and pumping power according to the instructions of the central control module, realizing precise irrigation; 4. The weather analysis module automatically controls the start and stop of irrigation according to the precipitation situation, avoiding over-irrigation. At the same time, when the weather detection module is abnormal, it can adjust the solenoid valves at different altitudes, improving the irrigation effect and saving water resources; 5. The judgment unit of the power regulation module monitors the power in real time. When the power is lower than the set threshold, the alarm module timely notifies the staff to handle it, and problems such as pipeline blockage and low pump efficiency can be quickly discovered and solved. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 is the block diagram of an intelligent photovoltaic water pumping irrigation system with dynamic regulation function of the present invention Figure 1 ; Figure 2 is the connection block diagram of the photovoltaic module of the present invention; Figure 3 is the connection block diagram of the energy storage module, standby power supply and detection module of the present invention; Figure 4 is the block diagram of an intelligent photovoltaic water pumping irrigation system with dynamic regulation function of the present invention Figure 2 ; Figure 5 is the flowchart of the operation of the power regulation module of the present invention; Figure 6 is the flowchart of the operation of the weather detection module and weather analysis module of the present invention; Figure 7 is the connection schematic diagram of the water pumping irrigation module of the present invention.

[0018] The reference numerals in the figure respectively represent: 1, Central control module; 2, Photovoltaic module; 21, Monocrystalline silicon solar cell; 22, Junction box; 23, Inverter; 3, Energy storage module; 4, Power regulation module; 41, Dynamic adjustment unit; 42, Flow feedback unit; 43, Correction unit; 44, Judgment unit; 5, Water pumping irrigation module; 51, Water pump; 52, Water level sensor; 53, Solenoid valve; 54, Flow sensor; 55, Power sensor; 6, Weather detection module; 7, Weather analysis module; 8, Alarm module; 9, Standby power supply; 10, Detection module. Specific embodiments

[0019] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0020] Example 1: In some embodiments, please refer to the accompanying drawings of the specification Figure 1 - Figure 7 , an intelligent photovoltaic water-lifting irrigation system with dynamic regulation function, including a central control module 1, a photovoltaic module 2, a energy storage module 3, a power regulation module 4, a water-lifting irrigation module 5, a weather detection module 6, a weather analysis module 7 and an alarm module 8; The photovoltaic module 2 is used to receive light energy and convert it into electrical energy, and then send the electrical energy to the energy storage module 3; Preferably, the photovoltaic module 2 includes monocrystalline silicon solar cells 21, a junction box 22 and an inverter 23; The monocrystalline silicon solar cells 21 are used to receive light energy and convert it into direct current and send it to the junction box 22; The junction box 22 is used to receive direct current and send it to the inverter 23; The inverter 23 is used to receive direct current and convert the direct current into alternating current and send it to the energy storage module 3 for storage.

[0021] Effect: With the help of the monocrystalline silicon solar cells 21 receiving light energy, converting it into direct current, then transmitting it to the inverter 23 through the junction box 22, and the inverter 23 converting the direct current into alternating current, and finally storing the electrical energy in the energy storage module 3.

[0022] The water-lifting irrigation module 5 is used to receive the control information of the central control module 1, pump the water in the reservoir to the irrigation area and control the size of the water flow, and can also collect the water flow data and the operating power of the pumped water and upload them to the central control module 1; Preferably, the water-lifting irrigation module 5 includes a water pump 51, a water level sensor 52, a solenoid valve 53, a flow sensor 54 and a power sensor 55. The water pump 51, the water level sensor 52, the solenoid valve 53, the flow sensor 54 and the power sensor 55 are all electrically connected to the central control module 1; The water pump 51 is used to receive the control information of the central control module 1 to start pumping the water in the reservoir to the irrigation area, and the water pump 51 also receives the power adjustment information of the power regulation module 4 to adjust the power when pumping water; The water level sensor 52 is fixedly installed inside the reservoir, and is used to detect the volume of water inside the reservoir and upload it to the central control module 1; The solenoid valve 53 is provided with a plurality of them and are respectively fixedly installed on each branch pipe. The branch pipes are installed at different altitudes. The solenoid valve 53 is used to receive the control information of the central control module 1 to adjust the opening degree to regulate the size of the water flow; The flow sensor 54 is fixedly installed at the water outlet of the water pump 51, and is used to collect the water flow data information pumped by the water pump 51 and upload it to the central control module 1; The power sensor 55 is fixedly connected to the water pump 51 and is used to collect the power data information of the water pump 51 during operation and upload it to the central control module 1; The energy storage module 3 is used to receive and store electricity and judge the magnitude relationship between t1 and t0; t1 is the remaining power operation time, and t0 is the time warning threshold; Preferably, if t1 ≤ t0, the power regulation module 4 adjusts the power of the water pump 51; If t1 > t0, the power regulation module 4 does not act; The energy storage module 3 can also judge whether the remaining power of the system is greater than ; If the remaining power of the system is greater than , the energy storage module 3 supplies power to the weather detection module 6 and the weather analysis module 7; If the remaining power of the system is less than or equal to of the total energy storage capacity of the system, the energy storage module 3 turns on the backup power supply 9 to supply power to the weather detection module 6 and the weather analysis module 7; At the same time, the detection module 10 detects that the number of days the backup power supply 9 is turned on is n; If n ≥ 2, the detection module 10 uploads the data information to the central control module 1; Then the central control module 1 controls the opening and closing degree of the solenoid valves 53 at different altitudes. The higher the altitude, the smaller the opening and closing degree.

[0023] For example, the basic opening and closing degree of the solenoid valve 53 is set to 80%, and for every 100-meter increase in altitude, the opening and closing degree decreases by 5%.

[0024] The solenoid valves 53 are arranged at different altitudes and can adjust the opening and closing degree according to the instructions of the weather analysis module 7 to adapt to the irrigation requirements at different altitudes, enabling the system to work effectively under complex terrain conditions and expanding the application range of the system.

[0025] Effect: The energy storage module 3 receives and stores the electric energy generated by the photovoltaic module 2, and at the same time compares the remaining power operation time t1 with the time warning threshold t0 to judge whether it is necessary to adjust the power of the water pump 51.

[0026] The power regulation module 4 adjusts the operating power of the water-lifting irrigation module 5 according to the judgment result of the energy storage module 3, achieving the purpose of energy conservation, saving energy, and improving energy utilization efficiency.

[0027] Preferably, the power regulation module 4 includes a dynamic adjustment unit 41, a flow feedback unit 42, a correction unit 43, and a judgment unit 44; The dynamic adjustment unit 41 is used to adjust the operating power of the water pump 51; Preferably, the adjustment formula is: ; P2 = ; P 调整 = P1 - P2; Wherein, the rated power of the water pump 51 is W, the current operating power is P1, the rotational speed adjustment ratio coefficient is k, and P2 is the power adjustment amount.

[0028] The flow feedback unit 42 is used to judge the magnitude relationship between the decrease amplitude q of the water flow rate after the power adjustment of the water pump 51 and 0.1; If q < 0.1, then P4 = 0, and the correction unit 43 has no action; If q ≥ 0.1, the flow feedback unit 42 activates the correction unit 43; The correction unit 43 is used to calculate the correction power: P4 = ; The value of: , then = 1; , then = 1.5; , then = 2; P 修正 = P 调整 + P4; Wherein, is the adjustment coefficient, and P4 is the correction adjustment amount.

[0029] The judgment unit 44 receives the power P 调整 adjusted by the dynamic adjustment unit 41, and judges the relationship between P 调整 and 0.7W; Preferably, if P 调整 > 0.7W, then the flow feedback unit 42 detects the relationship between the decrease amplitude q of the flow rate after adjustment and 0.1; If P 调整 ≤ 0.7W, then the judgment unit 44 sends a signal to the alarm module 8; The judgment unit 44 also receives the power P 修正 corrected by the correction unit 43, and judges the relationship between P 修正 and 0.5W; If P 修正 > 0.5W, then there is no action; If P 修正If it is ≤ 0.5W, the judgment unit 44 will send a signal to the alarm module 8; Effect: The judgment unit 44 judges the power after power adjustment and correction. When the power is lower than the set threshold, the alarm module 8 promptly notifies the staff for handling, which can quickly detect and solve problems occurring during the operation of the system, such as pipeline blockage, low efficiency of the water pump 51, etc., reduce the impact of system failures on irrigation work, and improve the reliability and stability of the system.

[0030] The weather detection module 6 is wirelessly connected to the meteorological bureau for detecting weather data information and uploading it to the weather analysis module 7; The weather analysis module 7 receives the weather data information and detects the relationship between m and M, where m is the precipitation and M is the precipitation threshold; Preferably, if m ≥ M, the central control module 1 controls the water pump 51 to close and stops irrigation; If m < M, normal irrigation is carried out; Effect: The central control module 1 automatically controls the start and stop of irrigation according to the comparison result between the precipitation and the precipitation threshold. When the precipitation is large, irrigation is stopped to avoid wasting water resources and soil erosion caused by over-irrigation; when the precipitation is insufficient, normal irrigation is carried out to ensure that the crops receive sufficient water supply.

[0031] The alarm module 8 receives the judgment result of the judgment unit 44 and alarms to notify the staff for handling.

[0032] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An intelligent photovoltaic water-lifting irrigation system with dynamic regulation function, comprising a central control module (1), characterized in that, It also includes: A photovoltaic module (2) that converts light energy into electrical energy and sends it to the energy storage module (3); A water-lifting irrigation module (5) that receives information from the central control module (1) for irrigation; An energy storage module (3) that receives and stores electrical energy, determines the magnitude relationship between the remaining power operation time t1 and the time warning threshold t0, and determines whether the power regulation module (4) needs to be started according to the judgment result; The energy storage module (3) can also determine whether the remaining power of the system is greater than ; If it is greater, the energy storage module (3) supplies power to the weather detection module (6) and the weather analysis module (7); If it is less than or equal to, the energy storage module (3) turns on the backup power supply (9) to supply power to the weather detection module (6) and the weather analysis module (7); The power regulation module (4) includes: A dynamic adjustment unit (41) for calculating the adjusted operating power P of the water-lifting irrigation module (5) 调整 ; A flow feedback unit (42) that determines the magnitude of the water flow decrease q after adjustment of the water-lifting irrigation module (5) compared to 0.1, and determines whether the correction unit (43) needs to be started according to the judgment result; Correction unit (43) for calculating a correction power P 修正 ; Judgment unit (44), receiving P 调整 , and judging the relationship between P 调整 and 0.7W, and deciding whether to activate the alarm module (8) according to the judgment result; The determination unit (44) also receives P 修正 and determines the relationship between P 修正 and 0.5W, and decides whether to activate the alarm module (8) according to the determination result.

2. The intelligent photovoltaic water-lifting irrigation system with dynamic regulation function according to claim 1, characterized in that, The photovoltaic module (2) includes monocrystalline silicon solar cells (21), a junction box (22), and an inverter (23); The monocrystalline silicon solar cells (21) are used to receive light energy and convert it into direct current and send it to the junction box (22); The junction box (22) is used to receive direct current and send it to the inverter (23); The inverter (23) is used to receive direct current and convert it into alternating current and send it to the energy storage module (3) for storage.

3. The intelligent photovoltaic water-lifting irrigation system with dynamic regulation function according to claim 2, characterized in that The water-lifting irrigation module (5) includes a water pump (51), a water level sensor (52), a solenoid valve (53), a flow sensor (54), and a power sensor (55). The water pump (51), the water level sensor (52), the solenoid valve (53), the flow sensor (54), and the power sensor (55) are all electrically connected to the central control module (1); The water pump (51) is used to receive the control information of the central control module (1) to start pumping water from the reservoir to the irrigation area. The water pump (51) also receives the power adjustment information of the power regulation module (4) to adjust the power when pumping water; The water level sensor (52) is fixedly installed inside the reservoir and is used to detect the water volume inside the reservoir and upload it to the central control module (1); A plurality of solenoid valves (53) are provided and are respectively fixedly installed on each branch pipe. The branch pipes are installed at different altitudes. The solenoid valve (53) is used to receive the control information of the central control module (1) to adjust the opening and closing degree to regulate the water flow; The flow sensor (54) is fixedly installed at the water outlet of the water pump (51) and is used to collect the water flow data information pumped by the water pump (51) and upload it to the central control module (1); The power sensor (55) is fixedly connected to the water pump (51) and is used to collect the power data information of the water pump (51) during operation and upload it to the central control module (1).

4. The intelligent photovoltaic water-lifting irrigation system with dynamic regulation function according to claim 1, characterized in that, The detection module (10) detects that the number of days the backup power supply (9) is turned on is n; If n≥2, the detection module (10) uploads the data information to the central control module (1); Then the central control module (1) controls the opening and closing degree of the solenoid valves (53) at different altitudes. The higher the altitude, the smaller the opening and closing degree.

5. The intelligent photovoltaic water-lifting irrigation system with dynamic regulation function according to claim 1, wherein, The judgment result of the magnitude relationship between t1 and t0 is: If t1 ≤ t0, the dynamic adjustment unit (41) adjusts the power of the water pump (51). If t1 > t0, the dynamic adjustment unit (41) does not act.

6. The intelligent photovoltaic water pumping irrigation system with dynamic regulation function according to claim 5, characterized in that The calculation formula of P in the dynamic adjustment unit (41) 调整 is as follows: ； P2= ； P 调整 = P1 - P2; Among them, the rated power of the water pump (51) is W, the current operating power is P1, the rotational speed adjustment ratio coefficient is k, and P2 is the power adjustment amount.

7. The intelligent photovoltaic water-lifting irrigation system with dynamic regulation function according to claim 1, characterized in that, The calculation formula of P in the correction unit (43) 修正 is as follows: P4= ； Value: , then = 1; , then = 1.5; , then = 2; P 修正 =P 调整 + P4; Among them, is the adjustment coefficient, and P4 is the correction adjustment amount.

8. The intelligent photovoltaic water pumping irrigation system with dynamic regulation function according to claim 1, characterized in that The determination unit (44) determines the relationship between P 调整 and 0.7 W: If P 调整 > 0.7W, the flow rate feedback unit (42) detects the relationship between the decrease q in the flow rate after adjustment and 0.1; If q < 0.1, then P4 = 0, and the correction unit (43) does not act. If q ≥ 0.1, then the correction unit (43) performs power correction. If P 调整 ≤ 0.7 W, the determination unit (44) sends a signal to the alarm module (8).

9. The intelligent photovoltaic water pumping irrigation system with dynamic regulation function according to claim 1, characterized in that, The determination unit (44) determines the relationship between P 修正 and 0.5 W: If P 修正 > 0.5 W, then there is no action; If P 修正 ≤ 0.5 W, the determination unit (44) sends a signal to the alarm module (8).

10. The intelligent photovoltaic water-lifting irrigation system with dynamic regulation function according to claim 1, characterized in that, The weather detection module (6) is wirelessly communicatively connected to the meteorological bureau, and is used to detect weather data information and upload it to the weather analysis module (7). The weather analysis module (7) receives the weather data information and detects the relationship between m and M, where m is the precipitation and M is the precipitation threshold. If m ≥ M, the central control module (1) controls the water pump (51) to shut down and stop irrigation. If m < M, normal irrigation is carried out.

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