Intelligent water-saving valve control system for intelligent irrigation

Abstract

The application discloses an intelligent water-saving valve control system for intelligent irrigation, and relates to the technical field of agricultural irrigation. The system comprises an environment detection system, a valve control system and a wind-solar complementary power supply system. The environment detection system is used for collecting soil temperature and humidity parameters, atmospheric pressure values, wind direction, rainfall and solar radiation intensity in real time and transmitting the parameters to the valve control system. The valve control system is used for judging whether to control the opening or closing of the valve based on the soil temperature and humidity parameters, so as to realize irrigation. The wind-solar complementary power supply system is used for providing power for the whole system by using renewable energy, i.e. wind energy and solar energy. The intelligent water-saving valve control system for intelligent irrigation provided in the application can accurately judge the irrigation demand of plants, so that the plants can be irrigated in time, the optimal water demand of the plants is ensured, and water resources can be fully utilized.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of agricultural irrigation technology, in particular to an intelligent water-saving valve control system for intelligent irrigation. BACKGROUND

[0002] China is a country with serious water resource shortage and frequent flood and drought disasters. The agricultural water consumption accounts for a large proportion of the total water consumption in the country. However, the traditional irrigation system lacks real-time soil temperature and humidity collection, and usually irrigates according to fixed time intervals or rough perception, resulting in over-irrigation or insufficient irrigation, thereby wasting water resources.

[0003] In addition, the traditional irrigation system usually relies on traditional power supply, which is inefficient and has a greater impact on the environment, and also causes a large amount of energy consumption, which not only increases the cost of agricultural production, but also may cause additional environmental load. SUMMARY

[0004] In view of the defects in the prior art, the purpose of the present application is to provide an intelligent water-saving valve control system for intelligent irrigation.

[0005] To achieve the above-mentioned purpose, the embodiments of the present application provide an intelligent water-saving valve control system for intelligent irrigation, comprising an environment detection system, a valve control system and a wind-solar complementary power supply system.

[0006] The environment detection system is used to collect soil temperature and humidity parameters, atmospheric pressure values, wind direction, rainfall, and solar radiation intensity in real time, and transmit them to the valve control system.

[0007] The valve control system is used to determine whether to control the opening or closing of the valve based on the soil temperature and humidity parameters, so as to realize irrigation.

[0008] The wind-solar complementary power supply system is used to provide power for the entire system by using renewable energy wind and solar energy.

[0009] The valve control system is also used to analyze the soil temperature and humidity parameters, atmospheric pressure values, wind direction, rainfall, and solar radiation intensity to obtain weather conditions.

[0010] Further, the environment detection system comprises a soil temperature and humidity sensor, an air pressure sensor, a wind direction sensor, a raindrop sensor, a solar radiation sensor, and an NB-IOT wireless communication module.

[0011] The soil temperature and humidity sensor is used to collect soil temperature and humidity parameters in real time.

[0012] The air pressure sensor is used to collect atmospheric pressure values in real time.

[0013] The wind direction sensor is used to collect wind direction in real time.

[0014] The raindrop sensor is used to collect rainfall in real time.

[0015] The solar radiation sensor is used to collect solar radiation intensity in real time.

[0016] The NB-IOT wireless communication module is used to transmit the soil temperature and humidity parameters, atmospheric pressure value, wind direction, rainfall, and solar radiation intensity to the valve control system through the NB-IOT communication protocol.

[0017] Further, the valve control system comprises a judgment module, an execution module, and a weather prediction module.

[0018] The judgment module is used to receive the soil temperature and humidity parameters transmitted by the environment detection system, analyze the soil temperature and humidity parameters, obtain a control instruction, and transmit the control instruction to the execution module.

[0019] The execution module is used to receive and execute the control instruction, control the valve to open, and realize irrigation operation.

[0020] The weather prediction module is used to receive the soil temperature and humidity parameters, atmospheric pressure value, wind direction, rainfall, and solar radiation intensity transmitted by the environment detection system, analyze the soil temperature and humidity parameters, atmospheric pressure value, wind direction, rainfall, and solar radiation intensity, obtain weather conditions, and transmit the weather conditions to the judgment module.

[0021] Further, the judgment module comprises a display screen and a central microcontroller.

[0022] The display screen is used to receive and display the soil temperature and humidity parameters and the weather conditions, and transmit the soil temperature and humidity parameters to the central microcontroller.

[0023] The central microcontroller is used to judge based on the soil temperature and humidity parameters, obtain a control instruction, and transmit the control instruction to the execution module.

[0024] The control instruction comprises a suspension instruction, a circulation instruction, an irrigation instruction, and a stop instruction.

[0025] The display screen is also used to set a threshold value and a time threshold value, and transmit the threshold value and the time threshold value to the central microcontroller; the threshold value comprises a temperature threshold value and a humidity threshold value; and the time threshold value is a water-permitted time period.

[0026] The central microcontroller is internally provided with a real-time clock RTC for real-time acquisition of the current time.

[0027] Further, the central microcontroller is specifically used for:

[0028] receiving the threshold value and the time threshold value of the display screen setting, and the soil temperature and humidity parameters;

[0029] acquiring the current time, and when the current time is within the time threshold value, judging based on the soil temperature and humidity parameters in combination with the threshold value;

[0030] when the soil temperature parameter is lower than the temperature threshold value, judging that the current environment is too low in temperature and is not suitable for irrigation, generating the suspension instruction and transmitting it to the execution module;

[0031] when the soil temperature parameter is higher than the temperature threshold value, judging that the current environment is too high in temperature and needs to strengthen the irrigation frequency, generating the circulation instruction and transmitting it to the execution module;

[0032] when the soil humidity parameter is lower than the humidity threshold value, judging that the soil is too dry and needs to be irrigated, generating the irrigation instruction and transmitting it to the execution module;

[0033] when the soil humidity parameter is higher than the humidity threshold value, judging that the soil is too wet and needs to stop irrigation, generating the stop instruction and transmitting it to the execution module.

[0034] Further, the execution module includes an opto-coupler isolation relay, an electric valve, and a water pump.

[0035] The opto-coupler isolation relay is used for receiving the control instruction and amplifying and transmitting the signal of the control instruction to the electric valve.

[0036] The electric valve is used for executing the control instruction to control the opening or closing of the electric valve.

[0037] The water pump is used for pushing water flow through the pipeline and releasing it to the roots of plants via the pre-arranged sprinkler head to irrigate the plants when the electric valve is opened.

[0038] Further, the weather prediction module includes a data processing unit, a feature extraction unit, a model training unit, and a sending unit.

[0039] The data processing unit is used for receiving the soil temperature and humidity parameters, the atmospheric pressure value, the wind direction, the rainfall, and the solar radiation intensity, and using a Kalman filter to perform smoothing and correction processing on the soil temperature and humidity parameters, the atmospheric pressure value, the wind direction, the rainfall, and the solar radiation intensity to obtain a time series data set.

[0040] The feature extraction unit is configured to extract change features from the time series data set, and obtain a feature data set after normalizing the features; the change features include soil temperature and humidity change features, air pressure change features, wind direction change features, rainfall change features, and solar radiation intensity change features;

[0041] The model training unit is configured to learn and train the feature data set based on a neural network model, so as to establish a complex relationship between soil temperature and humidity, atmospheric pressure, wind direction, rainfall, and solar radiation intensity; and predict future weather conditions based on the complex relationship to obtain weather conditions; the weather conditions include sunny days, rainy days, cloudy days, windy days, and smoggy days.

[0042] The sending unit is configured to wirelessly transmit the weather conditions to the judgment module.

[0043] Further, the wind-solar complementary power supply system comprises a wind power generation module, a solar power generation module, an energy storage module, and a control module.

[0044] The wind power generation module is configured to convert wind energy into electrical energy for use by the power supply system.

[0045] The solar power generation module is configured to convert solar energy into electrical energy for use by the power supply system through a photovoltaic effect.

[0046] The energy storage module is configured to store electrical energy from the wind power generation module and the solar power generation module.

[0047] The control module is configured to manage and distribute power supply to supply power required by the entire system.

[0048] The wind power generation module comprises a wind turbine.

[0049] The wind turbine is configured to convert wind energy into electrical energy and distribute the electrical energy through the control module, and finally transmit the electrical energy to the energy storage module.

[0050] Further, the solar power generation module comprises a solar cell panel and an automatic light tracking device.

[0051] The solar cell panel is configured to convert solar energy into electrical energy through a photovoltaic effect, and distribute the electrical energy through the control module, and finally transmit the electrical energy to the energy storage module.

[0052] The automatic light tracking device is installed on the solar cell panel and is configured to keep the solar cell panel in an optimal light receiving state at all times when there is light.

[0053] Further, the energy storage module includes lithium battery 1, lithium battery 2; the control module includes voltage sensor, current sensor, single-chip microcomputer, electronic switch;

[0054] The voltage sensor is used for measuring the output voltage of the wind power generation module and the solar power generation module, and measuring the input voltage of the lithium battery 1 and the lithium battery 2.

[0055] The current sensor is used for measuring the output current of the wind power generation module and the solar power generation module.

[0056] The single-chip microcomputer is used for calculating the power of the wind power generation module and the solar power generation module based on the output voltage and the output current respectively, and judging and controlling the electronic switch to be closed or turned on based on the input voltage and the power, so as to obtain a corresponding power supply mode, and using the power supply mode to supply power to the system; the power supply mode includes a first mode, a second mode, a third mode and a fourth mode.

[0057] The electronic switch is controlled and switched by a MOS tube, and is used for realizing the power switching between the wind power generation module and the solar power generation module; the MOS tube includes Q1, Q2, Q3, Q4, Q5 and Q6.

[0058] Compared with the prior art, the beneficial effects of the present application are reflected in:

[0059] 1. The water saving effect is obvious, and the water resources are fully utilized

[0060] The soil temperature and humidity are collected in real time through the environment detection system, the system can accurately determine the irrigation time, so as to achieve the goal of timely irrigation, ensure the optimal water demand of plants, and effectively save water resources.

[0061] 2. Intelligent management, saving human resources

[0062] Through the cooperation between the systems, the automatic execution process of intelligent irrigation is realized, the complexity and fault tolerance of human operation are effectively reduced, and the irrigation efficiency of farmland and the growth quality of crops are improved.

[0063] 3. Use of renewable energy, energy saving

[0064] The complementary use of renewable energy wind energy and solar energy is realized by the wind-solar complementary power supply system, for example, in the daytime, when the wind energy is weak, the solar energy can be used as complementary auxiliary power generation; in the evening, when there is no solar energy, the wind energy can be used as complementary auxiliary power generation; in summer, the air volume expands due to high temperature, the low air density leads to small wind energy, but the solar radiation is strong, and the solar energy is large; in winter, the air volume shrinks due to low temperature, the high air density leads to strong wind energy, but the solar radiation is weak, and the solar energy is small. Therefore, the wind-solar complementary power supply system effectively utilizes the complementarity of the two, saves energy, and realizes the reasonable allocation and efficient use of resources. BRIEF DESCRIPTION OF DRAWINGS

[0065] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the specific embodiments or prior art description will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual proportion.

[0066] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0067] Figure 2 It is a schematic diagram of the structure of the environment detection system;

[0068] Figure 3 It is a schematic diagram of the structure of the valve control system;

[0069] Figure 4 It is a flow chart of the implementation of the central microcontroller of the valve control system;

[0070] Figure 5 It is a schematic diagram of the structure of the wind-solar complementary power supply system;

[0071] Figure 6 It is an electronic switch circuit diagram of the control module of the wind-solar complementary power supply system;

[0072] Figure 7 It is a flow chart of the implementation of the control module of the wind-solar complementary power supply system.

[0073] In the drawings, 1 is an environment detection system, 2 is a valve control system, 3 is a wind-solar complementary power supply system, 11 is a soil temperature and humidity sensor, 12 is an air pressure sensor, 13 is a wind direction sensor, 14 is a raindrop sensor, 15 is a solar radiation sensor, 16 is an NB-IOT wireless communication module, 21 is a judgment module, 22 is an execution module, 23 is a weather prediction module, 31 is a wind power generation module, 32 is a solar power generation module, 33 is an energy storage module, and 34 is a control module. DETAILED DESCRIPTION

[0074] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, but cannot limit the protection scope of the present application.

[0075] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application should be understood as the usual meaning understood by the skilled person in the field of the present application.

[0076] As Figure 1 indicated, the embodiment of the present application provides an intelligent water-saving valve control system for intelligent irrigation, which comprises an environment detection system 1, a valve control system 2, and a wind-solar complementary power supply system 3.

[0077] The environment detection system 1 is used to collect the soil temperature and humidity parameters, the atmospheric pressure value, the wind direction, the rainfall, and the solar radiation intensity in real time, and transmit them to the valve control system 2.

[0078] The valve control system 2 is used to determine whether to control the opening or closing of the valve based on the soil temperature and humidity parameters, so as to realize irrigation.

[0079] The wind-solar complementary power supply system 3 is used to provide power for the entire system by using renewable energy wind and solar energy.

[0080] The valve control system 2 is also used to analyze the soil temperature and humidity parameters, the atmospheric pressure value, the wind direction, the rainfall, and the solar radiation intensity, so as to obtain the weather condition.

[0081] Further, as Figure 2 indicated, the environment detection system 1 in the embodiment of the present application comprises a soil temperature and humidity sensor 11, an air pressure sensor 12, a wind direction sensor 13, a raindrop sensor 14, a solar radiation sensor 15, and an NB-IOT wireless communication module 16.

[0082] The soil temperature and humidity sensor 11 is used to collect the soil temperature and humidity parameters in real time.

[0083] The air pressure sensor 12 is used to collect the atmospheric pressure value in real time.

[0084] The wind direction sensor 13 is used to collect the wind direction in real time.

[0085] The raindrop sensor 14 is used to collect the rainfall in real time.

[0086] The solar radiation sensor 15 is used to collect the solar radiation intensity in real time.

[0087] The NB-IOT wireless communication module 16 is configured to transmit the soil temperature and humidity parameters, the atmospheric pressure value, the wind direction, the rainfall, and the solar radiation intensity to the valve control system 2 through the NB-IOT communication protocol.

[0088] Further, as shown in the drawings, Figure 3 The valve control system 2 in the embodiment of the present application comprises a judgment module 21, an execution module 22, and a weather prediction module 23.

[0089] The judgment module 21 is configured to receive the soil temperature and humidity parameters transmitted by the environment detection system 1, to analyze the soil temperature and humidity parameters, to obtain a control instruction, and to transmit the control instruction to the execution module 22.

[0090] The execution module 22 is configured to receive and execute the control instruction, to control the valve to open, and to realize the irrigation operation.

[0091] The weather prediction module 23 is configured to receive the soil temperature and humidity parameters, the atmospheric pressure value, the wind direction, the rainfall, and the solar radiation intensity transmitted by the environment detection system 1, to analyze and process the soil temperature and humidity parameters, the atmospheric pressure value, the wind direction, the rainfall, and the solar radiation intensity, to obtain a weather condition, and to transmit the weather condition to the judgment module 21.

[0092] Further, the judgment module 21 comprises a display screen and a central microcontroller.

[0093] The display screen is configured to receive and display the soil temperature and humidity parameters transmitted by the environment detection system 1 and the weather condition transmitted by the weather prediction module 23, and to transmit the soil temperature and humidity parameters to the central microcontroller.

[0094] The central microcontroller is configured to judge based on the soil temperature and humidity parameters, to obtain a control instruction, and to transmit the control instruction to the execution module 22.

[0095] The control instruction comprises a suspension instruction, a circulation instruction, an irrigation instruction, and a stop instruction.

[0096] The display screen is further configured to set a threshold value and a time threshold value, and to transmit the threshold value and the time threshold value to the central microcontroller; the threshold value comprises a temperature threshold value and a humidity threshold value; and the time threshold value is a time period for allowing watering.

[0097] The central microcontroller is internally provided with a real-time clock (RTC) configured to obtain the current time in real time.

[0098] Further, the execution module 22 comprises an optical coupling isolation relay, an electric valve, and a water pump.

[0099] The light coupling isolation relay is used for receiving the control instruction and amplifying and transmitting a signal of the control instruction to the electric valve;

[0100] The electric valve is used for executing the control instruction to control opening or closing of the electric valve.

[0101] The water pump is used for pushing water flow through a pipeline and releasing to roots of plants via a pre-arranged sprinkler head to irrigate plants when the electric valve is opened.

[0102] Further, the weather prediction module 23 comprises a data processing unit, a feature extraction unit, a model training unit and a sending unit.

[0103] The data processing unit is used for receiving the soil temperature and humidity parameters, the atmospheric pressure value, the wind direction, the rainfall and the solar radiation intensity, and performing smoothing and correction processing on the soil temperature and humidity parameters, the atmospheric pressure value, the wind direction, the rainfall and the solar radiation intensity by using a Kalman filter to obtain a time series data set.

[0104] The feature extraction unit is used for extracting change features from the time series data set, and obtaining a feature data set after normalizing the features; the change features comprise soil temperature and humidity change features, atmospheric pressure change features, wind direction change features, rainfall change features and solar radiation intensity change features.

[0105] The model training unit is used for learning and training the feature data set based on a neural network model, so as to establish a complex relationship among the soil temperature and humidity, the atmospheric pressure, the wind direction, the rainfall and the solar radiation intensity; and based on the complex relationship, predicting a future weather condition to obtain the weather condition; the weather condition comprises a sunny day, a rainy day, a cloudy day, a windy day and a foggy day.

[0106] The sending unit is used for wirelessly transmitting the weather condition to the judgment module 21.

[0107] Further, as shown in Figure 4 The central microcontroller is specifically used for:

[0108] S211, receiving the threshold value and the time threshold value set by the display screen, and the soil temperature and humidity parameters;

[0109] S212, obtaining a current time;

[0110] S213, whether the current time belongs to the time threshold value, if yes, executing step S214, otherwise executing step S215;

[0111] S214, judging based on the soil temperature and humidity parameters in combination with the threshold value;

[0112] S215, directly generating the suspension instruction;

[0113] S216, whether the soil temperature parameter is higher than the temperature threshold value, if yes, executing step S219, otherwise executing step S218;

[0114] S217, whether the soil humidity parameter is higher than the humidity threshold value, if yes, executing step S221, otherwise executing step S220;

[0115] S218, judging that the current environment is too low temperature to be suitable for irrigation, and generating the suspension instruction;

[0116] S219, judging that the current environment is too high temperature, and the irrigation frequency needs to be strengthened, and generating the cycle instruction;

[0117] S220, judging that the soil is too dry, and irrigation is needed, and generating the irrigation instruction;

[0118] S221, judging that the soil is too wet, and irrigation needs to be stopped, and generating the stop instruction;

[0119] S222, transmitting the control instruction to the execution module 22.

[0120] Specifically, the suspension instruction is used for prohibiting opening the valve and the water pump for a period of time, and prohibiting irrigating the plant; the cycle instruction is used for opening the valve and the water pump to cyclically irrigate the plant every interval of a period of time; the irrigation instruction is used for opening the valve and the water pump to irrigate the plant; and the stop instruction is used for closing the valve and the water pump to stop irrigating the plant.

[0121] Further, as shown in the figure, Figure 5 the wind-solar complementary power supply system 3 in the embodiment of the present application comprises a wind power generation module 31, a solar power generation module 32, an energy storage module 33, and a control module 34.

[0122] The wind power generation module 31 is used for converting wind energy into electric energy for use of the power supply system.

[0123] The solar power generation module 32 is used for converting solar energy into electric energy for use of the power supply system through a photovoltaic effect.

[0124] The energy storage module 33 is used for storing electric energy from the wind power generation module 31 and the solar power generation module 32.

[0125] The control module 34 is used for managing and distributing power supply to supply required power supply of the entire system.

[0126] The wind power generation module 31 comprises a wind power generator;

[0127] The wind power generator is used for converting wind energy into electric energy and distributing the electric energy through the control module 34 and finally transmitting the electric energy to the energy storage module 33.

[0128] Further, the solar power generation module 32 comprises a solar cell panel and an automatic light tracking device.

[0129] The solar cell panel is used for converting solar energy into electric energy through a photovoltaic effect and distributing the electric energy through the control module 34 and finally transmitting the electric energy to the energy storage module 33.

[0130] The automatic light tracking device is installed on the solar cell panel and is used for keeping the solar cell panel in an optimal light receiving state in the presence of light.

[0131] Further, the energy storage module 33 comprises lithium batteries 1 and 2, and the control module 34 comprises a voltage sensor, a current sensor, a single-chip microcomputer and an electronic switch.

[0132] The voltage sensor is used for measuring output voltages of the wind power generation module 31 and the solar power generation module 32 and measuring input voltages of the lithium batteries 1 and 2.

[0133] The current sensor is used for measuring output currents of the wind power generation module 31 and the solar power generation module 32.

[0134] The single-chip microcomputer, which is selected from a PIC16F877A type single-chip microcomputer, is used for calculating powers of the wind power generation module 31 and the solar power generation module 32 based on the output voltages and the output currents, respectively, and judging and controlling the electronic switch to be closed or turned on based on the input voltages and the powers, so as to obtain a corresponding power supply mode and supply power to the system by using the power supply mode.

[0135] The electronic switch is controlled and switched by using MOS tubes and is used for realizing power switching between the wind power generation module 31 and the solar power generation module 32; the MOS tubes comprise Q1, Q2, Q3, Q4, Q5 and Q6.

[0136] Further, as shown in Figures 6 to 7 The specific implementation process of the control module 34 in the embodiment of the application is as follows:

[0137] S341, measure the output voltage and output current of the wind power module 31 and the solar power module 32 respectively using the voltage sensor and the current sensor, and calculate the power of the wind power module 31 and the solar power module 32 respectively using the output voltage and the output current;

[0138] S342, measure the input voltage of the lithium battery 1 and the lithium battery 2 using the voltage sensor;

[0139] S343, judge the input voltage of the lithium battery 1, if the input voltage is less than 12V, execute step S344, otherwise execute step S345;

[0140] S344, judge the power of the wind power module 31 and the power of the solar power module 32, if the power of the wind power module 31 is less than the power of the solar power module 32, execute step S347, otherwise execute step S346;

[0141] S345, the single-chip microcomputer turns off the MOS tube Q3 and turns on the MOS tube Q4;

[0142] S346, the single-chip microcomputer turns on the MOS tubes Q2 and Q3 and turns off the MOS tubes Q1 and Q4;

[0143] S347, the single-chip microcomputer turns on the MOS tubes Q1 and Q3 and turns off the MOS tubes Q2 and Q4;

[0144] S348, judge the input voltage of the lithium battery 2, if the input voltage is less than 12V, execute step S349, otherwise execute step S350;

[0145] S349, judge the power of the wind power module 31 and the power of the solar power module 32, if the power of the wind power module 31 is less than the power of the solar power module 32, execute step S352, otherwise execute step S351;

[0146] S350, the single-chip microcomputer turns off the MOS tube Q5 and turns on the MOS tube Q6;

[0147] S351, the single-chip microcomputer turns on the MOS tubes Q2 and Q5 and turns off the MOS tubes Q1 and Q6;

[0148] S352, the single-chip microcomputer turns on the MOS tubes Q1 and Q5 and turns off the MOS tubes Q2 and Q6;

[0149] S353, turn on the corresponding MOS tube to obtain different power supply modes, and supply power to the system according to the power supply modes.

[0150] Specifically, the power supply mode includes a first mode, a second mode, a third mode and a fourth mode.

[0151] The first mode, when the MOS tube Q1, Q3, Q6 is turned on, Q2, Q4, Q5 is closed, the lithium battery 1 is charged through the solar power module 32, and the lithium battery 2 directly supplies power to the system.

[0152] The second mode, when the MOS tube Q2, Q3, Q6 is turned on, Q1, Q4, Q5 is closed, the lithium battery 2 is charged through the solar power module 32, and the lithium battery 1 directly supplies power to the system.

[0153] The third mode, when the MOS tube Q2, Q4, Q5 is turned on, Q1, Q3, Q6 is closed, the lithium battery 2 is charged through the wind power module 31, and the lithium battery 1 directly supplies power to the system.

[0154] The fourth mode, when the MOS tube Q1, Q4, Q5 is turned on, Q2, Q3, Q6 is closed, the lithium battery 1 is charged through the wind power module 31, and the lithium battery 2 directly supplies power to the system.

[0155] The beneficial effects of the present application are reflected in:

[0156] 1. The water saving effect is obvious, and the water resources are fully utilized

[0157] The soil temperature and humidity are collected in real time through the environment detection system, the system can accurately determine the irrigation time, so as to achieve the goal of timely irrigation, ensure the optimal water demand of plants, and effectively save water resources.

[0158] 2. Intelligent management, saving human resources

[0159] Through the cooperation between the systems, the automatic execution process of intelligent irrigation is realized, the complexity and fault tolerance of human operation are effectively reduced, and the irrigation efficiency of farmland and the growth quality of crops are improved.

[0160] 3. Use of renewable energy, energy saving

[0161] The complementary use of renewable energy wind power and solar energy is realized by the wind-solar complementary power supply system. For example, in the daytime, when the wind power is weak, the solar power can be used as complementary auxiliary power; in the evening, when there is no solar power, the wind power can be used as complementary auxiliary power; in summer, the air volume expands due to high temperature, the low air density leads to small wind power, but the solar radiation is strong, and the solar power is large; in winter, the air volume shrinks due to low temperature, the high air density leads to strong wind power, but the solar radiation is weak, and the solar power is small. Therefore, the wind-solar complementary power supply system effectively utilizes the complementarity of the two, saves energy, and realizes the reasonable allocation and efficient use of resources.

[0162] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit the present application; although the present application is described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions recorded in the above embodiments can be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application.

Claims

1. A smart water-saving valve control system for intelligent irrigation, characterized in that, This includes environmental monitoring systems, valve control systems, and wind-solar hybrid power supply systems. The environmental monitoring system is used to collect soil temperature and humidity parameters, atmospheric pressure, wind direction, rainfall, and solar radiation intensity in real time, and transmit them to the valve control system. The valve control system is used to determine whether to control the opening or closing of the valve based on the soil temperature and humidity parameters, so as to realize irrigation. The wind-solar hybrid power supply system is used to provide power to the entire system using renewable energy sources, wind and solar power. The valve control system is also used to analyze the weather conditions based on the soil temperature and humidity parameters, atmospheric pressure, wind direction, rainfall, and solar radiation intensity. The valve control system includes a judgment module, an execution module, and a weather forecasting module; The judgment module is used to receive the soil temperature and humidity parameters transmitted by the environmental monitoring system, and to judge and analyze the soil temperature and humidity parameters to obtain control commands, and then transmit the control commands to the execution module. The execution module is used to receive and execute the control command to control the valve to open and realize the irrigation operation; The weather forecast module is used to receive the soil temperature and humidity parameters, atmospheric pressure, wind direction, rainfall, and solar radiation intensity transmitted by the environmental monitoring system, and to analyze and process the soil temperature and humidity parameters, atmospheric pressure, wind direction, rainfall, and solar radiation intensity to obtain the weather conditions, and then transmit the weather conditions to the judgment module. The weather forecasting module includes a data processing unit, a feature extraction unit, a model training unit, and a transmission unit; The data processing unit is used to receive the soil temperature and humidity parameters, atmospheric pressure, wind direction, rainfall, and solar radiation intensity, and to use a Kalman filter to smooth and correct the soil temperature and humidity parameters, atmospheric pressure, wind direction, rainfall, and solar radiation intensity to obtain a time series dataset. The feature extraction unit is used to extract change features from the time series dataset; After normalizing the features, a feature dataset is obtained; the change features include soil temperature and humidity change features, air pressure change features, wind direction change features, rainfall change features, and solar radiation intensity change features. The model training unit is used to learn and train the feature dataset based on a neural network model, thereby establishing a complex relationship between soil temperature and humidity, atmospheric pressure, wind direction, rainfall, and solar radiation intensity; based on the complex relationship, it predicts future weather conditions to obtain the weather conditions; the weather conditions include sunny days, rainy days, cloudy days, strong winds, and fog / haze; The transmitting unit is used to wirelessly transmit the weather conditions to the judgment module.

2. The intelligent water-saving valve control system for intelligent irrigation according to claim 1, characterized in that, The environmental monitoring system includes a soil temperature and humidity sensor, an air pressure sensor, a wind direction sensor, a raindrop sensor, a solar radiation sensor, and an NB-IoT wireless communication module. The soil temperature and humidity sensor is used to collect soil temperature and humidity parameters in real time; The pressure sensor is used to collect atmospheric pressure values ​​in real time. The wind direction sensor is used to collect wind direction data in real time; The raindrop sensor is used to collect rainfall data in real time; The solar radiation sensor is used to collect solar radiation intensity in real time; The NB-IoT wireless communication module is used to transmit the soil temperature and humidity parameters, atmospheric pressure, wind direction, rainfall, and solar radiation intensity to the valve control system via the NB-IoT communication protocol.

3. The intelligent water-saving valve control system for intelligent irrigation according to claim 1, characterized in that, The judgment module includes a display screen and a central microcontroller; The display screen is used to receive and display the soil temperature and humidity parameters and the weather conditions, and to transmit the soil temperature and humidity parameters to the central microcontroller; The central microcontroller is used to determine the control command based on the soil temperature and humidity parameters, and then transmit the control command to the execution module. The control commands include stop commands, cycle commands, irrigation commands, and stop commands; The display screen is also used to set thresholds and time thresholds, and transmit the thresholds and time thresholds to the central microcontroller; the thresholds include a temperature threshold and a humidity threshold; the time threshold is the period during which watering is permitted. The central microcontroller has a built-in real-time clock (RTC) for obtaining the current time in real time.

4. The intelligent water-saving valve control system for intelligent irrigation according to claim 3, characterized in that, The central microcontroller is specifically used for: Receive the threshold and time threshold set on the display screen, as well as the soil temperature and humidity parameters; Obtain the current time; if the current time is within the time threshold, make a judgment based on the soil temperature and humidity parameters, combined with the threshold. When the soil temperature parameter is lower than the temperature threshold, it is determined that the current environment is too cold to be suitable for irrigation, and the stop command is generated and transmitted to the execution module. When the soil temperature parameter is higher than the temperature threshold, it is determined that the current environment is too hot and the irrigation frequency needs to be increased. The cycle instruction is then generated and transmitted to the execution module. When the soil moisture parameter is lower than the moisture threshold, it is determined that the soil is too dry and needs to be irrigated. An irrigation instruction is then generated and transmitted to the execution module. When the soil moisture parameter is higher than the moisture threshold, it is determined that the soil is too wet and irrigation needs to be stopped. A stop command is generated and transmitted to the execution module.

5. The intelligent water-saving valve control system for intelligent irrigation according to claim 1, characterized in that, The execution module includes an optocoupler-isolated relay, an electric valve, and a water pump; The optocoupler isolation relay is used to receive the control command and amplify the signal of the control command to transmit it to the electric valve; The electric valve is used to execute the control command and control the opening or closing of the electric valve; The water pump is used to push water through the pipe and release it to the roots of the plant through the pre-arranged sprinkler heads to irrigate the plant when the electric valve is opened.

6. The intelligent water-saving valve control system for intelligent irrigation according to claim 1, characterized in that, The wind-solar hybrid power supply system includes a wind power generation module, a solar power generation module, an energy storage module, and a control module. The wind power generation module is used to convert wind energy into electrical energy for use in the power supply system; The solar power generation module is used to convert solar energy into electrical energy for the power supply system through the photovoltaic effect; The energy storage module is used to store electrical energy from the wind power generation module and the solar power generation module; The control module is used to manage and distribute power to supply the power required by the entire system. The wind power generation module includes a wind turbine generator; The wind turbine is used to convert wind energy into electrical energy, which is then distributed through the control module and finally transmitted to the energy storage module.

7. The intelligent water-saving valve control system for intelligent irrigation according to claim 6, characterized in that, The solar power generation module includes solar panels and an automatic light tracking device; The solar panel is used to convert solar energy into electrical energy through the photovoltaic effect, and distributes it through the control module, and finally transmits it to the energy storage module; The automatic light-tracking device is installed on the solar panel to ensure that the solar panel is always in optimal light-receiving condition when there is sunlight.

8. The intelligent water-saving valve control system for intelligent irrigation according to claim 6, characterized in that, The energy storage module includes lithium battery 1 and lithium battery 2; the control module includes a voltage sensor, a current sensor, a microcontroller, and an electronic switch. The voltage sensor is used to measure the output voltage of the wind power generation module and the solar power generation module, as well as the input voltage of the lithium battery 1 and the lithium battery 2. The current sensor is used to measure the output current of the wind power generation module and the solar power generation module; The microcontroller is used to calculate the power of the wind power generation module and the solar power generation module based on the output voltage and output current, respectively, and then determine whether to turn the electronic switch on or off based on the input voltage and the power to obtain the corresponding power supply mode, and use the power supply mode to supply power to the system; the power supply mode includes a first mode, a second mode, a third mode, and a fourth mode; The electronic switch uses MOSFETs for control and switching, and is used to realize power switching between the wind power generation module and the solar power generation module; the MOSFETs include Q1, Q2, Q3, Q4, Q5, and Q6.

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