Intermittent river coastal vegetation irrigation system and irrigation method

Abstract

The invention discloses an intermittent river coastal vegetation irrigation system and method. The system comprises a monitoring module, a water source module, a switching module, an irrigation module and a control module. The monitoring module collects vegetation soil humidity values and intermittent river water level data in real time, the water source module comprises a river water source unit and an urban water source unit, the switching module is of an interlocking switching structure and ensures that two water sources supply water in an alternative mode, and the control module controls the switching module to achieve automatic water source switching based on monitoring data. The irrigation water source mode is adjusted in real time based on the water level dynamic change and the soil humidity requirement of the intermittent river, the urban water source is used only when the river water source cannot meet the requirement, the urban water source allocation mode is effectively optimized, the urban water supply consumption is reduced, and the intelligence and economy of irrigation operation are improved; the device is suitable for irrigation operation in fields such as farmland and green land around intermittent rivers.

Description

Technical Field

[0001] This invention relates to the field of environmental engineering, and in particular to an intermittent riverbank vegetation irrigation system and irrigation method. Background Technology

[0002] Intermittent rivers are those that flow during certain periods of the year, while drying up and ceasing flow at other times due to scarce rainfall, strong evaporation, or infiltration. Farmland or greenbelts are often located along the banks of intermittent rivers, and these fields and greenbelts require timely irrigation. If urban tap water were used exclusively for irrigating the vegetation along the banks of intermittent rivers, and with a stable water supply and proper management, normal vegetation growth could be guaranteed. However, using tap water for irrigation when the riverbed is flowing is a waste of urban water resources and a misallocation of resources. Because rivers are intermittent, the irrigation of riparian vegetation cannot rely entirely on river water. If, at a certain time, the vegetation urgently needs irrigation but the riverbed happens to be dry, the vegetation will not grow properly due to the untimely irrigation.

[0003] In areas near intermittent rivers, while some existing automatic irrigation systems have dual water source switching capabilities, they lack a precise monitoring mechanism for intermittent river water levels. This prevents them from adjusting the water supply mode based on dynamic river water levels, and the switching structure lacks an interlocking design, easily leading to water mixing and pressure conflicts caused by simultaneous operation of both water sources. Furthermore, most systems determine irrigation needs solely based on soil moisture, ignoring the fluctuating water levels of intermittent rivers, making it difficult to optimize water allocation and balance irrigation effectiveness with urban water conservation needs.

[0004] Therefore, there is an urgent need for an automatic irrigation system and method that can adapt to intermittent river areas, achieve precise switching between two water sources, and optimize urban water supply. Summary of the Invention

[0005] The purpose of this invention is to provide an intermittent riverbank vegetation irrigation system to solve the problem that existing automatic irrigation systems lack a precise monitoring mechanism for intermittent river water levels, which easily leads to water mixing and pressure conflicts caused by the simultaneous operation of two water sources.

[0006] To address the aforementioned technical problems, the first solution provided by this invention is an intermittent riverbank vegetation irrigation system. This system includes a monitoring module, a water source module, a switching module, an irrigation module, and a control module. The monitoring module includes a soil moisture monitoring unit and a river water level monitoring unit. The soil moisture monitoring unit is embedded in the soil of the root zone of the vegetation in the area to be irrigated, and is used to collect soil moisture values ​​in real time. The river water level monitoring unit is located at the intermittent river water intake point, and is used to collect river water level data in real time and determine whether the water intake threshold has been reached. The water source module includes a river water source unit and an urban water source unit. The river water source unit is used to collect water when the river water level reaches the required threshold. The threshold is used to guide river water. The urban water source unit is used to connect to the urban water supply network. The outlet of the river water source unit and the outlet of the urban water source unit are respectively connected to the two inlets of the switching module. The switching module has an interlocking structure. After passing through the switching module, either the river water source or the urban water source can be switched to the irrigation module for water supply. The control module is electrically connected to the monitoring module, the water source module, the switching module and the irrigation module respectively. It is used to receive the soil moisture value and river water level data collected by the monitoring module. Based on the preset soil moisture threshold, river water level threshold and irrigation duration parameters, it controls the switching module to switch the water supply source and controls the start and stop of the irrigation module and the irrigation duration.

[0007] In some embodiments, the soil moisture detection unit employs a soil moisture sensor embedded in the root distribution layer of the vegetation in the area to be irrigated, at a depth of 10-20 cm, to collect soil volumetric water content in real time, with a sampling frequency of once every 5 minutes. The river water level detection unit uses an ultrasonic water level gauge fixed on a concrete support at an intermittent river water intake point, with a measurement range of 0-5 m and an accuracy of ±1 cm. It collects river water level data in real time and transmits it to the control module, which determines whether a preset water intake threshold has been reached. For example, the lower limit of the water intake threshold can be set to 0.8 m. In other embodiments, the soil moisture monitoring unit and the river water level monitoring unit can be selected according to actual needs, and are not limited here. At the same time, the preset soil moisture threshold (including upper and lower limits), river water level intake threshold (lower limit), and irrigation duration parameters can be appropriately adjusted according to actual needs, and are not limited here.

[0008] In some embodiments, the switching module includes a first electrically controlled valve mechanism and a second electrically controlled valve mechanism. The inlet of the first electrically controlled valve mechanism is connected to the outlet of the river water source unit, and the inlet of the second electrically controlled valve mechanism is connected to the outlet of the urban water source unit. The output of the switching module is connected to the inlet of the irrigation module, and either the first or second electrically controlled valve mechanism can be opened. In other embodiments, an interlocking electromagnetic three-way valve, such as DN50, can also be used. This interlocking electromagnetic three-way valve has both mechanical and electrical interlocking protection. Mechanically, the valve core limits the flow of both paths simultaneously, and electrically, the control module output signal interlocks to ensure that only one of the river water source and the urban water source can be connected. More specifically, the first input of the interlocking electromagnetic three-way valve is sealed to the outlet of the check valve of the river water source unit through a flange, the second input is sealed to the outlet of the urban water source unit through a flange, and the output is welded to the main water supply pipe of the irrigation module, ensuring reliable switching without leakage. The specific device for switching modules can be adjusted appropriately according to actual needs, and is not limited here.

[0009] In some implementations, the river water source unit includes a water intake pump, a filter assembly, and a booster pump. The water intake pump is located at an intermittent river water intake point, and the filter assembly is installed at the inlet of the water intake pump. The outlet of the water intake pump is connected to the booster pump via a pipeline, and the outlet of the booster pump is connected to the inlet of the first electrically controlled valve mechanism in the switching module. Both the water intake pump and the booster pump are electrically connected to the control module and are activated when the river water level reaches the water intake threshold. The filter assembly preferably uses a multi-layer filter structure, such as a double-layer filter structure. The first layer is a 5mm stainless steel filter to filter large particles, and the second layer is a 100-mesh nylon filter to filter fine suspended particles. The booster pump can adapt the water flow pressure to the needs of the irrigation module. A check valve can also be installed at the outlet of the booster pump to prevent backflow and pollution of the river water source. The specific structure can be adapted according to actual needs and is not limited here.

[0010] In some implementations, the monitoring module also includes a water quality auxiliary monitoring unit, which is located at the rear end of the filter screen assembly of the river water source unit. It is used to detect the turbidity and pH value of the filtered river water and transmit the detection data to the control module as an auxiliary basis for water source switching.

[0011] In some implementations, the urban water source unit includes a pressure reducing valve, the inlet of which is connected to the urban water supply network, the outlet of which is connected to the inlet of the second electrically controlled valve mechanism in the switching module, and the pressure reducing valve is electrically connected to the control module to regulate the urban water supply pressure to a suitable flow range for the irrigation module.

[0012] In some embodiments, the intermittent riverbank vegetation irrigation system also includes a water storage unit. The inlet of the water storage unit connects to the outlet of a pressure-reducing valve in the urban water source unit. The water storage unit may include a reservoir, a submersible pump, and a water storage monitoring unit. The submersible pump is located at the outlet of the water storage unit and is connected to the inlet of a second electrically controlled valve mechanism via a pipeline. The water storage monitoring unit is used to monitor the water level in the reservoir. The switching module also includes a third electrically controlled valve mechanism. The inlet of the third electrically controlled valve mechanism is connected to the outlet of the river water source unit via a pipeline, and the inlet of the water storage unit connects to the outlet of the third electrically controlled valve mechanism. The purpose of setting up the water storage unit and the third electrically controlled valve mechanism in this embodiment is to guide a portion of the river water to the reservoir for storage when the intermittent river water level is high, and then use the stored water for irrigating vegetation through the second electrically controlled valve mechanism. This can further reduce the consumption of urban water resources and conserve water supply resources.

[0013] In some implementations, the control module includes a microcontroller, a data processing unit, and a wireless communication unit. The data processing unit analyzes and processes the data collected by the monitoring module, determines whether irrigation is needed, and selects a suitable water source. The microcontroller controls the water source switching of the switching module and the irrigation action of the irrigation module based on the processing results of the data processing unit. The wireless communication unit connects the control module with a remote terminal for signal interaction and supports remote monitoring and parameter adjustment. Specifically, the control module can use an STM32F103 microcontroller as its core, combined with a data processing unit, a wireless communication unit (4G / 5G module), and a relay drive circuit. The data processing unit filters, calibrates, and analyzes the data collected by the monitoring module to determine irrigation needs and select a suitable water source. The relay drive circuit controls the start and stop of the water pump, booster pump, switching module, and irrigation module, with an output current ≥5A to meet the power requirements of the actuators. The wireless communication unit can upload real-time data (soil moisture, river water level, water consumption, equipment status) to a remote terminal (mobile APP or computer client), and also supports remote adjustment of preset parameters and manual switching of water sources, achieving unattended operation and remote management.

[0014] In some implementations, when the data processing unit determines that the soil moisture threshold has been reached based on the soil moisture value collected by the monitoring module, the microcontroller controls the irrigation module to perform the irrigation operation; otherwise, the microcontroller controls the irrigation module to terminate the irrigation operation. When the data processing unit determines that the water intake threshold has been reached based on the river water level data collected by the monitoring module, the microcontroller controls the switching module to switch to the river water source unit for irrigation; otherwise, the microcontroller controls the switching module to switch to the city water source unit for irrigation.

[0015] In some implementations, the irrigation module includes a main water supply pipe, branch water supply pipes, and several irrigation nozzles. The main water supply pipe is connected to the outlet of the switching module, and the several irrigation nozzles are connected to the main water supply pipe through the branch water supply pipes for uniformly spraying and irrigating the vegetation.

[0016] To solve the above-mentioned technical problems, the second solution provided by the present invention is an irrigation method based on the intermittent riverbank vegetation irrigation system in the aforementioned first solution, which includes the following steps:

[0017] S1: The control module calibrates the initial detection accuracy of the monitoring module, presets soil moisture threshold, river water level threshold, and irrigation duration parameters. The switching module is in a disconnected state by default, and both the river water source unit and the urban water source unit are in standby mode.

[0018] S2: The monitoring module collects soil moisture and river water level data in real time and transmits them synchronously to the control module. The control module analyzes the data through the data processing unit.

[0019] S3: The control module determines whether the soil moisture value is lower than the preset soil moisture threshold. If not, it returns to step S2 to continue monitoring; if so, it executes step S4.

[0020] S4: The control module determines whether the river water level has reached the preset water intake threshold. If the river water level reaches the water intake threshold, the control module controls the switching module to switch to the river water source unit in the on state, and simultaneously starts the water intake pump and booster pump of the river water source unit, and starts the irrigation module to irrigate for a preset time. At this time, the urban water source unit remains disconnected. Conversely, if the river water level does not reach the preset water intake threshold, the control module controls the switching module to switch to the urban water source unit in the on state, opens the pressure reducing valve of the urban water source unit, and starts the irrigation module to irrigate for a preset time. At this time, the river water source unit remains disconnected.

[0021] S5: During the irrigation process, the monitoring module continuously collects data. If the soil moisture value reaches the preset soil moisture threshold, the control module controls the corresponding water source unit to stop, the switching module to reset and disconnect, and the irrigation module to stop working; otherwise, irrigation continues.

[0022] The advantages of this invention, which differ from the prior art, are as follows:

[0023] 1. Adapting to intermittent river characteristics and achieving precise water source switching: Relying on the real-time monitoring of intermittent river water levels by the river water level detection unit, and combining it with soil moisture requirements for comprehensive judgment, the system prioritizes the use of qualified river water sources. Only when river water sources cannot meet irrigation needs will the system switch to urban water sources for replenishment. At the same time, a strict two-choice switching mechanism is constructed through an interlocked switching module to completely avoid the problems of mixing of two water sources and pressure conflicts, maximize the utilization value of natural river water sources, and effectively reduce dependence on urban water sources.

[0024] 2. Optimizing urban water supply and conserving water resources: This invention intelligently adjusts irrigation water source patterns based on the dynamic changes in intermittent river water levels, abandoning the traditional, inefficient method of relying solely on urban water sources for irrigation, and significantly reducing the consumption of urban water resources in irrigation operations. This system is particularly suitable for large-area irrigation scenarios around intermittent rivers, effectively alleviating urban water supply pressure, further optimizing the overall allocation structure of urban water resources, and improving water resource utilization efficiency.

[0025] 3. High level of intelligence and convenient and efficient operation and maintenance: The system adopts closed-loop control logic, enabling unmanned automatic operation of the entire process, including monitoring, analysis, water source switching, and irrigation. The control module supports remote monitoring and flexible parameter adjustment. Managers can monitor key data such as equipment operating status and water consumption statistics in real time through the terminal, significantly reducing maintenance manpower and time costs, and simultaneously improving the automation efficiency and refined management level of irrigation operations. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of one embodiment of the intermittent riverbank vegetation irrigation system of the present invention;

[0027] Figure 2 This is a flowchart of one embodiment of the intermittent riverbank vegetation irrigation method in this invention;

[0028] Figure 3 This is a schematic diagram of the intermittent riverbank vegetation irrigation system in Embodiment 1 of the present invention;

[0029] In the diagram: 1-Monitoring module, 11-Soil moisture monitoring unit, 12-River water level monitoring unit, 2-Water source module, 21-River water source unit, 211-Water intake pump, 212-Filter assembly, 213-Boost pump, 22-Urban water source unit, 221-Pressure reducing valve, 222-Urban water supply network, 3-Switching module, 31-First electric control valve mechanism, 32-Second electric control valve mechanism, 33-Third electric control valve mechanism, 4-Irrigation module, 41-Main water supply pipe, 42-Branch water supply pipe, 43-Irrigation nozzle, 5-Control module, 6-Water storage unit, 61-Water storage tank, 62-Submersible pump, 63-Water storage monitoring unit, 7-Intermittent river, 8-Vegetation. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0031] While some existing intermittent riverbank vegetation irrigation systems possess dual water source switching capabilities, they lack a precise monitoring mechanism for intermittent river water levels. This prevents them from adjusting the water supply mode based on dynamic river water levels, and the switching structure lacks an interlocking design, making them prone to water mixing and pressure conflicts caused by simultaneous operation of both water sources. Furthermore, most systems rely solely on soil moisture to determine irrigation needs, ignoring the fluctuating water levels of intermittent rivers, making it difficult to optimize water allocation and balance irrigation effectiveness with urban water conservation requirements.

[0032] To address the aforementioned problems, the structure and specific working process of the intermittent riverbank vegetation irrigation system of the present invention will be described below through specific embodiments.

[0033] Example 1

[0034] Please see Figure 1 and Figure 3In this embodiment 1, the intermittent riverside vegetation irrigation system includes a monitoring module 1, a water source module 2, a switching module 3, an irrigation module 4, and a control module 5. The monitoring module 1 includes a soil moisture monitoring unit 11 and a river water level monitoring unit 12. The soil moisture monitoring unit 11 is embedded in the soil of the root distribution layer of the vegetation in the area to be irrigated and is used to collect soil moisture values ​​in real time. The river water level monitoring unit 12 is set at the water intake point of the intermittent river 7 and is used to collect river water level data in real time and determine whether the lower limit of the water intake threshold has been reached. The water source module 2 includes a river water source unit 21 and an urban water source unit 22. The river water source unit 21 is used to guide river water when the river water level reaches the lower limit of the water intake threshold. The urban water source unit 22 is used to connect to the urban water supply network 222. The outlet of the river water source unit 21 and the outlet of the urban water source unit 22 are respectively connected to the two inlets of the switching module 3. The switching module 3 is an interlocked structure. After passing through the switching module 3, either the river water source or the urban water source can be switched to the irrigation module 4 for water supply. The control module 5 is electrically connected to the monitoring module 1, the water source module 2, the switching module 3 and the irrigation module 4 respectively. It is used to receive the soil moisture value and river water level data collected by the monitoring module. Based on the preset soil moisture threshold, river water intake threshold and irrigation duration parameters, it controls the switching module to switch the water supply source and controls the start and stop of the irrigation module and the irrigation duration.

[0035] In this embodiment, the soil moisture detection unit uses a soil moisture sensor, embedded 15cm deep into the root distribution layer of the vegetation in the area to be irrigated. Since different humidity levels change the soil resistance, the soil volumetric water content can be collected in real time by measuring the voltage change in the soil. The collection frequency is once every 5 minutes. The river water level detection unit uses a float water level gauge, set at the intermittent river water intake point, to collect river water level readings in real time and transmit them to the control module. The control module determines whether the preset water intake threshold has been reached, and the lower limit of the water intake threshold is set at 0.8m.

[0036] In this embodiment, the switching module 3 includes a first electrically controlled valve mechanism 31 and a second electrically controlled valve mechanism 32; the inlet end of the first electrically controlled valve mechanism 31 is connected to the outlet end of the river water source unit 21, the inlet end of the second electrically controlled valve mechanism 32 is connected to the outlet end of the city water source unit 22, and the output end of the switching module 3 is connected to the inlet end of the irrigation module 4. An electromagnetic interlock device is used to control either the first electrically controlled valve mechanism 31 or the second electrically controlled valve mechanism 32 to open selectively.

[0037] In this embodiment, the river water source unit 21 includes a water intake pump 211, a filter assembly 212, and a booster pump 213. The water intake pump 211 is located at an intermittent river water intake point, and the filter assembly 212 is installed at the inlet end of the water intake pump 211. The outlet end of the water intake pump 211 is connected to the booster pump 213 via a pipe. The outlet end of the booster pump 213 is connected to the inlet end of the first electrically controlled valve mechanism 31 in the switching module 3. Both the water intake pump 211 and the booster pump 213 are electrically connected to the control module 5 and are activated when the river water level reaches the water intake threshold. The filter assembly 212 adopts a multi-layer filter structure, such as a double-layer filter structure. The first layer is a 5mm stainless steel filter screen to filter large particles, and the second layer is a 100-mesh nylon filter screen to filter fine suspended particles.

[0038] In this embodiment, the urban water source unit 22 includes a pressure reducing valve 221. The inlet of the pressure reducing valve 221 is connected to the urban water supply network 222, and the outlet of the pressure reducing valve 221 is connected to the inlet of the second electrically controlled valve mechanism 32 in the switching module 3. The pressure reducing valve 221 is electrically connected to the control module 5 and is used to regulate the urban water supply pressure to a suitable flow range for the irrigation module.

[0039] In this embodiment, the intermittent riverside vegetation irrigation system also includes a water storage unit 6. The inlet of the water storage unit 6 is connected to the outlet of the pressure reducing valve 221 in the urban water source unit 22. The water storage unit 6 includes a water storage tank 61, a submersible pump 62, and a water storage monitoring unit 63. The submersible pump 62 is installed at the outlet of the water storage unit 6 and is connected to the inlet of the second electric control valve mechanism 32 through a pipeline. The water storage monitoring unit 63 uses a float level gauge to monitor the water level in the water storage tank 61. The switching module 3 also includes a third electric control valve mechanism 33. The inlet of the third electric control valve mechanism 33 is connected to the outlet of the river water source unit 21 through a pipeline. The inlet of the water storage unit 6 is connected to the outlet of the third electric control valve mechanism 33. When the intermittent river water level is high, the excess river water is guided to the water storage tank 61 through the third electric control valve mechanism 33 and stored. The stored water is then used to irrigate the vegetation through the second electric control valve mechanism 32, thus saving water resources.

[0040] In this embodiment, the control module includes a microcontroller, a data processing unit, a wireless communication unit, and a relay drive circuit. The data processing unit is used to filter, calibrate, and analyze the data collected by the monitoring module, and to determine whether irrigation is needed and to select a suitable water source. The relay drive circuit is used to control the start and stop of the water pump, booster pump, switching module, and irrigation module, with an output current ≥5A to meet the power requirements of the actuators. An STM32F103 microcontroller is used as the core, and the microcontroller controls the water source switching of the switching module and the irrigation action of the irrigation module based on the processing results of the data processing unit. The wireless communication unit can upload real-time data (including soil moisture, river water level, water consumption, and equipment status) to a computer client for remote adjustment of preset parameters and manual switching of water sources, realizing unattended operation and remote management.

[0041] In this embodiment, the irrigation module 4 includes a main water supply pipe 41, a branch water supply pipe 42, and several irrigation nozzles 43. The main water supply pipe 41 is connected to the water outlet of the switching module 3, and the several irrigation nozzles 43 are connected to the main water supply pipe 41 through the branch water supply pipe 42 for uniformly spraying and irrigating the vegetation.

[0042] Please see Figure 2 The specific working process of this intermittent riverside vegetation irrigation system is as follows:

[0043] 1) The control module calibrates the initial detection accuracy of the monitoring module, presets soil moisture threshold, river water level threshold, and irrigation duration parameters. The switching module is in a disconnected state by default, and both the river water source unit and the urban water source unit are in standby mode.

[0044] 2) The monitoring module collects soil moisture and river water level data in real time and transmits them synchronously to the control module, which then analyzes the data through the data processing unit.

[0045] 3) The control module determines whether the soil moisture value is lower than the preset soil moisture threshold. If not, it returns to step 2) for continuous monitoring; if so, it proceeds to step 4).

[0046] 4) The control module determines whether the river water level has reached the preset water intake threshold. If the river water level reaches the water intake threshold, the control module controls the switching module to switch to the river water source unit in the on state, and at the same time starts the water intake pump and booster pump of the river water source unit, and starts the irrigation module to irrigate for a preset time. At this time, the urban water source unit remains disconnected. Conversely, if the river water level does not reach the preset water intake threshold, the control module controls the switching module to switch to the urban water source unit in the on state, opens the pressure reducing valve of the urban water source unit, and starts the irrigation module to irrigate for a preset time. At this time, the river water source unit remains disconnected.

[0047] 5) During the irrigation process, the monitoring module continuously collects data. If the soil moisture value reaches the preset soil moisture threshold, the control module controls the corresponding water source unit to stop, the switching module to reset and disconnect, and the irrigation module to stop working; otherwise, irrigation continues.

[0048] The intermittent riverbank vegetation irrigation system operates on a closed-loop control logic of "monitoring-analysis-decision-execution," with its core being the intelligent switching between different water sources achieved through precise monitoring data. After system initialization, the monitoring module continuously collects soil moisture and intermittent river water level data, synchronously transmitting it to the data processing unit of the control module. The data processing unit filters and calibrates the collected data, removing abnormal data, and then compares and analyzes it with preset thresholds to determine whether irrigation operations need to be initiated: if the soil moisture is higher than the preset threshold, the system remains in standby mode, continuously monitoring the data; if the soil moisture is lower than the preset threshold, it enters the water source determination phase. Simultaneously, water quality testing data can be used for auxiliary judgment. For example, the control module can combine river water level data and water quality monitoring data to determine whether the river water source is available: if the river water level reaches the water intake threshold and the water quality meets the standards, the control switching module connects the river water source unit, disconnects the urban water source unit, and starts the river water source unit and irrigation module for irrigation; if the river water level does not meet the standards or the water quality does not meet the standards, the control switching module connects the urban water source unit, disconnects the river water source unit, and starts the urban water source unit and irrigation module for irrigation. During irrigation, the monitoring module continuously feeds back soil moisture data. When the soil moisture reaches the preset threshold upper limit, the corresponding water source unit is shut down, the switching module is reset, and the irrigation module stops working; if the current water source is abnormal during irrigation, such as a sudden drop in river water level or interruption of urban water supply, the control module quickly determines whether the backup water source is available and switches only when the backup water source meets the conditions to ensure the smooth completion of irrigation operations. If the backup water source is unavailable, irrigation is stopped and an alarm signal is issued to remind management personnel to troubleshoot the fault. The entire process requires no human intervention, achieving automation and intelligence in irrigation operations. At the same time, it dynamically adjusts the water source based on intermittent river water levels, maximizing the use of natural water resources and optimizing the city's water supply.

[0049] The embodiments described above are merely illustrative of implementation methods of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. An intermittent riverbank vegetation irrigation system, characterized in that, It includes a monitoring module, a water source module, a switching module, an irrigation module, and a control module; The monitoring module includes a soil moisture monitoring unit and a river water level monitoring unit. The soil moisture monitoring unit is embedded in the soil of the vegetation root distribution layer in the area to be irrigated and is used to collect soil moisture values ​​in real time. The river water level monitoring unit is set at the intermittent river water intake point and is used to collect river water level data in real time and determine whether the water intake threshold has been reached. The water source module includes a river water source unit and an urban water source unit. The river water source unit is used to guide river water when the river water level reaches the water intake threshold. The urban water source unit is used to connect to the urban water supply network. The outlet of the river water source unit and the outlet of the urban water source unit are respectively connected to the two inlets of the switching module. The switching module has an interlocking structure, and after passing through the switching module, either the river water source or the urban water source can be switched to supply water to the irrigation module. The control module is electrically connected to the monitoring module, water source module, switching module and irrigation module respectively. It is used to receive soil moisture value and river water level data collected by the monitoring module, and control the switching module to switch the water supply source based on preset soil moisture threshold, river water level threshold and irrigation duration parameters, and control the start and stop of the irrigation module and the irrigation duration.

2. The intermittent riverbank vegetation irrigation system according to claim 1, characterized in that, The switching module includes a first electrically controlled valve mechanism and a second electrically controlled valve mechanism. The inlet of the first electrically controlled valve mechanism is connected to the outlet of the river water source unit, the inlet of the second electrically controlled valve mechanism is connected to the outlet of the city water source unit, the output of the switching module is connected to the inlet of the irrigation module, and either the first electrically controlled valve mechanism or the second electrically controlled valve mechanism can be opened.

3. The intermittent riverbank vegetation irrigation system according to claim 2, characterized in that, The river water source unit includes a water intake pump, a filter screen assembly, and a booster pump. The water intake pump is located at an intermittent river water intake point, and the filter screen assembly is installed at the water inlet of the water intake pump. The water outlet of the water intake pump is connected to the booster pump through a pipeline. The water outlet of the booster pump is connected to the water inlet of the first electrically controlled valve mechanism in the switching module. Both the water intake pump and the booster pump are electrically connected to the control module and are activated when the river water level reaches the water intake threshold.

4. The intermittent riverbank vegetation irrigation system according to claim 3, characterized in that, The monitoring module also includes a water quality auxiliary monitoring unit, which is located at the rear end of the filter screen assembly of the river water source unit. It is used to detect the turbidity and pH value of the filtered river water and transmit the detection data to the control module as an auxiliary basis for water source switching.

5. The intermittent riverbank vegetation irrigation system according to claim 2, characterized in that, The urban water source unit includes a pressure reducing valve. The inlet of the pressure reducing valve is connected to the urban water supply network, and the outlet of the pressure reducing valve is connected to the inlet of the second electrically controlled valve mechanism in the switching module. The pressure reducing valve is electrically connected to the control module and is used to regulate the urban water supply pressure to a suitable flow range for the irrigation module.

6. The intermittent riverbank vegetation irrigation system according to claim 5, characterized in that, The intermittent riverside vegetation irrigation system also includes a water storage unit. The water inlet of the water storage unit is connected to the water outlet of the pressure reducing valve in the urban water source unit. A submersible pump is provided at the water outlet of the water storage unit and is connected to the water inlet of the second electrically controlled valve mechanism through a pipeline. The switching module also includes a third electrically controlled valve mechanism. The inlet of the third electrically controlled valve mechanism is connected to the outlet of the river water source unit through a pipe, and the inlet of the water storage unit receives the outlet of the third electrically controlled valve mechanism.

7. The intermittent riverbank vegetation irrigation system according to claim 1, characterized in that, The control module includes a microcontroller, a data processing unit, and a wireless communication unit. The data processing unit is used to analyze and process the data collected by the monitoring module, and to determine whether irrigation is needed and to select a suitable water source. The microcontroller controls the water source switching of the switching module and the irrigation action of the irrigation module based on the processing results of the data processing unit. The wireless communication unit is used to link the signal interaction between the control module and the remote terminal, and supports remote monitoring and parameter adjustment.

8. The intermittent riverbank vegetation irrigation system according to claim 7, characterized in that, When the data processing unit determines that the soil moisture value collected by the monitoring module has reached the soil moisture threshold, the microcontroller controls the irrigation module to perform an irrigation operation; otherwise, the microcontroller controls the irrigation module to terminate the irrigation operation. When the data processing unit determines that the water intake threshold has been reached based on the river water level data collected by the monitoring module, the microcontroller controls the switching module to switch to the river water source unit for irrigation. Conversely, the microcontroller controls the switching module to switch to the urban water source unit for irrigation.

9. The intermittent riverbank vegetation irrigation system according to claim 1, characterized in that, The irrigation module includes a main water supply pipe, branch water supply pipes, and several irrigation nozzles. The main water supply pipe is connected to the outlet of the switching module, and the several irrigation nozzles are connected to the main water supply pipe through the branch water supply pipes for uniformly spraying and irrigating the vegetation.

10. An irrigation method based on the intermittent riverbank vegetation irrigation system described in any one of claims 1 to 9, characterized in that, Includes the following steps: S1: The control module calibrates the initial detection accuracy of the monitoring module, presets soil moisture threshold, river water level threshold, and irrigation duration parameters, and the switching module is in a disconnected state by default. Both the river water source unit and the urban water source unit are in standby mode. S2: The monitoring module collects soil moisture values ​​and river water level data in real time and transmits them synchronously to the control module, which analyzes the data through the data processing unit. S3: The control module determines whether the soil moisture value is lower than the preset soil moisture threshold. If not, it returns to step S2 to continue monitoring. If so, proceed to step S4; S4: The control module determines whether the river water level has reached the preset water intake threshold. If the river water level reaches the water intake threshold, the control module controls the switching module to switch to the on state of the river water source unit, and simultaneously starts the water intake pump and booster pump of the river water source unit, and starts the irrigation module to irrigate for a preset duration. At this time, the city water source unit remains disconnected. Conversely, if the river water level does not reach the preset water intake threshold, the control module controls the switching module to switch to the on state of the city water source unit, opens the pressure reducing valve of the city water source unit, and starts the irrigation module to irrigate for a preset duration. At this time, the river water source unit remains disconnected. S5: During the irrigation process, the monitoring module continuously collects data. If the soil moisture value reaches the preset soil moisture threshold, the control module controls the corresponding water source unit to stop, the switching module to reset and disconnect, and the irrigation module to stop working; otherwise, irrigation continues.

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