River water level change self-adaptive coastal vegetation irrigation system

Abstract

The invention discloses a coastal vegetation irrigation system self-adaptive to river water level change, the system comprises a soil humidity monitoring unit, a river water level monitoring unit, a river water source unit, an urban water supply pipe, a water source switching unit and an irrigation module, and the water source switching unit is respectively communicated with the river water source unit and the urban water supply pipe. The first electric control valve mechanism and the second electric control valve mechanism in the water source switching unit form an interlocking type switching structure, and the vegetation soil humidity value and intermittent river water level data are collected in real time based on the soil humidity monitoring unit and the river water level monitoring unit respectively, so that the water source switching unit is controlled to realize automatic switching of two different water sources; the urban water source allocation mode is effectively optimized, the urban water supply consumption is remarkably reduced, and the method is suitable for being popularized and applied in scenes such as farmland and greenbelt around the intermittent river.

Description

Technical Field

[0001] This invention relates to the field of environmental engineering, and in particular to an adaptive river water level change-adaptive riparian vegetation irrigation system. Background Technology

[0002] Intermittent rivers are those that flow during certain periods of the year, but dry up and cease flowing during other periods due to scarce rainfall, high evaporation, or large infiltration. These rivers are often lined with farmland and greenbelts, whose normal growth depends on timely irrigation. While relying entirely on municipal tap water for irrigation can ensure vegetation growth under stable water supply and proper management, using tap water when the river has water results in a waste and misallocation of urban water resources. Furthermore, due to the intermittent nature of rivers, vegetation irrigation cannot rely entirely on river water – if the river dries up when irrigation is urgently needed, untimely irrigation can easily hinder growth. Therefore, existing irrigation systems not only lack precise monitoring mechanisms for intermittent river water levels, failing to adaptively adjust the water supply mode based on dynamic water level changes, but also lack interlocking designs in their dual-source switching structures, making it prone to simultaneous operation of both water sources, leading to potential problems such as water mixing and water pressure conflicts. In addition, existing systems typically use a single measurement parameter as the basis for determining irrigation demand, ignoring factors such as the intermittent fluctuations in river water levels and changes in the soil environment, making it even more difficult to achieve optimal water allocation.

[0003] Therefore, there is an urgent need to develop an automatic irrigation system adapted to intermittent river areas to address the shortcomings of existing intermittent river irrigation schemes. Summary of the Invention

[0004] The purpose of this invention is to provide an adaptive river water level change-adaptive riparian vegetation irrigation system to solve the problems of existing automatic irrigation systems lacking an automatic and accurate monitoring mechanism for intermittent river water levels, which easily leads to water mixing and low water utilization due to the simultaneous operation of two water sources.

[0005] To address the aforementioned technical problems, the present invention provides a solution for an adaptive river water level change-based irrigation system for riparian vegetation. This system includes a soil moisture monitoring unit, a river water level monitoring unit, a river water source unit, an urban water supply pipe, a water source switching unit, and an irrigation module. The soil moisture monitoring unit is embedded in the root soil of the vegetation in the irrigated area to collect soil moisture values ​​in real time and determine whether a preset soil moisture threshold (including upper and lower limits) has been reached. The river water level monitoring unit is located at intermittent river water intake points to collect river water level data in real time and determine whether a preset water intake threshold (lower limit) has been reached. The water source switching unit includes a first electrically controlled valve mechanism, a second electrically controlled valve mechanism, a main power supply, a water source switching unit switch, and a water source switching unit protection resistor. The first electric control valve mechanism is located at the first inlet of the water source switching unit and connected to the outlet of the river water source unit. The inlet of the river water source unit is placed at the intermittent river water intake point and is used to guide river water when the river water level reaches the water intake threshold. The second electric control valve mechanism is located at the second inlet of the water source switching unit and connected to the outlet of the urban water supply pipe. The water source switching unit switch and the water source switching unit protection resistor are connected in series with the second electric control valve mechanism. The main power supply is electrically connected to the river water level monitoring unit, the first electric control valve mechanism, and the second electric control valve mechanism. Based on the preset soil moisture threshold and water intake threshold, it controls either the first or second electric control valve mechanism to open and supply water to the irrigation module. The inlet of the irrigation module is connected to the outlet of the water source switching unit and is used to spray and irrigate the vegetation.

[0006] In some embodiments, the first electrically controlled valve mechanism includes a first electrically controlled valve, a first transmission assembly, a first motor, a first insulating pressure rod, a first electrically controlled switch assembly A, a first electrically controlled switch assembly B, a first voltmeter assembly, and a first electromagnet. The first electrically controlled switch assembly A includes a first spring switch A and a first diode A connected in parallel. The first electrically controlled switch assembly B includes a first spring switch B and a first diode B connected in parallel. The first voltmeter assembly includes a first voltmeter dial, a first voltmeter pointer, a first voltmeter stop contact A, a first voltmeter stop contact B, a first voltmeter open contact A, and a first voltmeter open contact B. The first electrically controlled valve is used to control the opening or closing of the river water source unit supplying river water to the irrigation module. The first transmission assembly consists of a meshing first transmission rack and several gears. The shaft of one gear is connected to one end of the first electrically controlled valve, the shaft of the second gear is connected to the drive shaft of the first motor, and the third gear is located at one end of the first transmission rack and connected to the T-shaped longitudinal end of the first insulating pressure rod. The T-shaped transverse end of the first insulating pressure rod is located between the first spring switch A and the first spring switch B and is used to control the opening / closing of the first spring switch A or the first spring switch B. The other end of the first transmission rack is located adjacent to the water source switching unit switch B. The pointer of the first voltmeter is rotatable. The first electromagnet is positioned at the center of the dial of the first voltmeter. The first voltmeter stop contact A and the first voltmeter stop contact B are paired with the first voltmeter open contact A and the first voltmeter open contact B around the center of the dial of the first voltmeter. When the pointer of the first voltmeter is in the low voltage position, its two ends are in contact with the first voltmeter stop contact A and the first voltmeter stop contact B respectively. When the pointer of the first voltmeter is in the high voltage position, its two ends are in contact with the first voltmeter open contact A and the first voltmeter open contact B respectively. The first electromagnet is positioned close to one end of the pointer of the first voltmeter. The dial of the first voltmeter is connected in parallel with the soil moisture monitoring unit. The two ends of the pointer of the first voltmeter are respectively connected to the two poles of the main power supply. One end of the first spring switch A is connected to the first voltmeter open contact A and the first voltmeter stop contact B. The other end of the first spring switch A is connected to one end of the first motor. One end of the first spring switch B is connected to the other end of the first motor. The other end of the first spring switch B is connected to the first voltmeter stop contact A and the first voltmeter open contact B. The first electromagnet is connected to the river water level monitoring unit.

[0007] In some embodiments, the second electrically controlled valve mechanism includes a second electrically controlled valve, a second transmission group, a second motor, a second insulating pressure rod, a second electrically controlled switch assembly A, a second electrically controlled switch assembly B, a second voltmeter assembly, a second electromagnet, and a water storage spring switch. The second transmission group consists of a second transmission rack and several gears meshing with each other. The second electrically controlled switch assembly A includes a second spring switch A and a second diode A connected in parallel. The second electrically controlled switch assembly B includes a second spring switch B and a second diode B connected in parallel. The second voltmeter assembly includes a second voltmeter dial, a second voltmeter pointer, a second voltmeter stop contact A, a second voltmeter stop contact B, a second voltmeter open contact A, and a second voltmeter open contact B. The second electrically controlled valve is used to control the opening or closing of the urban water supply pipe supplying river water to the irrigation module. The second transmission assembly consists of a meshing second transmission rack and several gears. The shaft of one gear is connected to one end of the second electrically controlled valve, the shaft of the second gear is connected to the drive shaft of the second motor, and the third gear is located at one end of the second transmission rack and connected to the T-shaped longitudinal end of the second insulating pressure rod. The T-shaped transverse end of the second insulating pressure rod is located between the second spring switch A and the second spring switch B and is used to control the opening / closing of either spring switch A or spring switch B. The other end of the second transmission rack is adjacent to the water storage spring switch. The pointer of the second voltmeter is rotatable. The second voltmeter is positioned at the center of its dial. Stop contacts A and B, along with open contacts A and B, are arranged in pairs around the center of the dial. When the voltmeter pointer is in a low-voltage position, its two ends are in contact with stop contacts A and B, respectively. When the pointer is in a high-voltage position, its two ends are in contact with open contacts A and B, respectively. The second electromagnet is positioned adjacent to one end of the voltmeter pointer. The dial of the second voltmeter is connected in parallel with the soil moisture monitoring unit. The two ends of the pointer of the second voltmeter are respectively connected to the two poles of the main power supply. One end of the second spring switch A is connected to the open contact A and the stop contact B of the second voltmeter. The other end of the second spring switch A is connected to one end of the second motor. One end of the second spring switch B is connected to the other end of the second motor. The other end of the second spring switch B is connected to the stop contact A and the open contact B of the second voltmeter. The second electromagnet is connected to the river water level monitoring unit.

[0008] In some embodiments, the soil moisture monitoring unit includes a soil moisture monitoring power supply, a soil moisture sensor, a first conductive rod, a second conductive rod, and a sliding rheostat; the positive terminal of the soil moisture monitoring power supply is electrically connected to one end of the first conductive rod, the other end of the first conductive rod is embedded in the soil moisture sensor, one end of the second conductive rod is embedded in the soil moisture sensor, and the other end of the second conductive rod is electrically connected to the negative terminal of the soil moisture monitoring power supply via the sliding rheostat; the conductive ends of the first and second conductive rods are connected in parallel with the dial of a first voltmeter, and the conductive ends of the first and second conductive rods are connected in parallel with the dial of a second voltmeter. Specifically, a soil moisture sensor can be embedded in the root distribution layer of the vegetation in the area to be irrigated at a depth of 10-20cm. Two voltmeters connected in parallel with two conductive rods are used to measure the soil moisture in real time. The higher the soil moisture, the lower the soil resistance, and the two voltmeters will naturally deflect to the left, pointing to the low voltage position. Conversely, the lower the soil moisture, the higher the soil resistance, and the two voltmeters will naturally deflect to the right, pointing to the high voltage position. In this way, the real-time monitoring of soil moisture is achieved while controlling the deflection position of the two voltmeters. Combined with the monitoring data of river water level, the two voltmeters can automatically select one of the first and second electrically controlled valves to open.

[0009] In some embodiments, the river water level monitoring unit includes a first float, a first float connecting rod, a first pin, a first sleeve, a first bracket, a first support rod, a water level monitoring spring switch A, a water level monitoring spring switch B, and a river water level monitoring protection resistor, which includes a low water level protection resistor and a high water level protection resistor. One end of the first float connecting rod passes through the first float and is fixed to both ends of the first float by the first pin. The other end of the first float connecting rod passes through the first sleeve, forming a T-shaped first insulating pressing part and a second insulating pressing part. The outer wall of the middle part of the first sleeve is fixedly connected to the first support rod, which is horizontally movably embedded in the first bracket. The length of the first insulating pressing part is less than the length of the second insulating pressing part. The first insulating pressing part is arranged adjacent to the water level monitoring spring switch A, and the second insulating pressing part is arranged adjacent to the water level monitoring spring switch B. One of the water level monitoring spring switches A and B can be turned on. One end of the water level monitoring spring switch A is connected to the negative terminal of the main power supply via a low water level protection resistor, and the other end of the water level monitoring spring switch A is connected to the positive terminal of the main power supply via a first electromagnet. One end of the water level monitoring spring switch B is connected to the negative terminal of the main power supply via a high water level protection resistor, and the other end of the water level monitoring spring switch B is connected to the positive terminal of the main power supply via a second electromagnet.

[0010] In some embodiments, the river water source unit includes a second float, a hose, a filter screen, and a booster pump. One end of the hose passes through the second float, and the end forms a trapezoidal inlet with a filter screen installed. The other end of the hose connects to the inlet of the first electrically controlled valve mechanism via the booster pump. The filter screen preferably uses a multi-layer filtration structure, such as a double-layer filtration 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. 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.

[0011] 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 water source switching unit, 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.

[0012] In some embodiments, the operation switching mode of the riverside vegetation irrigation system that adapts to changes in river water level in this invention is as follows:

[0013] (1) When the soil moisture value collected by the soil moisture monitoring unit reaches the upper limit of the preset soil moisture threshold, the pointers of the first voltmeter and the second voltmeter both deflect to the low voltage position, driving the first and second electrically controlled valves to close and stop water supply for irrigation.

[0014] (2) When the soil moisture value collected by the soil moisture monitoring unit does not reach the lower limit of the preset soil moisture threshold, and the river water level data collected by the river water level monitoring unit reaches the water intake threshold, the pointer of the first voltmeter deflects to the high voltage position and the pointer of the second voltmeter deflects to the low voltage position, driving the first electric control valve to open and the second electric control valve to close, and driving the river water source unit to deliver river water to the irrigation module.

[0015] (3) When the soil moisture value collected by the soil moisture monitoring unit does not reach the lower limit of the preset soil moisture threshold, and the river water level data collected by the river water level monitoring unit does not reach the water intake threshold, the pointer of the first voltmeter deflects to the low voltage position and the pointer of the second voltmeter deflects to the high voltage position, driving the first electric control valve to close and the second electric control valve to open, and driving the urban water supply pipe to deliver urban water to the irrigation module.

[0016] The advantages of this invention, which differ from the prior art, are as follows:

[0017] This invention's system is equipped with a river water level detection unit and a soil moisture monitoring module. Through real-time capture and comprehensive analysis of these two core parameters, it establishes a scientific and practical water source switching logic, accurately matching the intermittent operation characteristics of rivers to achieve flexible switching and precise control of water supply. When the river has sufficient water, the system prioritizes natural river water for irrigation. Only under the dual conditions of the river water level falling below a set threshold and being unable to support vegetation irrigation needs, and soil moisture reaching the critical irrigation standard, can it automatically switch to urban water sources to complete the replenishment operation. In addition, the system is specially designed with an interlocking automatic switching mechanism between the first and second electrically controlled valve mechanisms. From a structural design perspective, this eliminates problems such as water source mixing and water supply pressure conflicts that may occur when two water sources are simultaneously connected, fully releasing the utilization value of natural river water sources, significantly reducing dependence on urban water sources, optimizing the overall urban water resource allocation system, and achieving a comprehensive improvement in water resource utilization efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of one embodiment of the riverside vegetation irrigation system that adapts to changes in river water level in this invention.

[0019] Figure 2 This is a schematic diagram of the structure and circuit of the river water level monitoring unit and the river water source unit in the adaptive river water level change riparian vegetation irrigation system of the present invention.

[0020] Figure 3 This is a schematic diagram of the structure and circuit of the soil moisture monitoring unit and the water source switching unit in the adaptive river water level irrigation system for riparian vegetation in this invention.

[0021] In the diagram: n1~n6 are Figure 2 and Figure 3 Six corresponding circuit nodes are connected in the middle;

[0022] In the diagram: 1-Soil moisture monitoring unit, 11-Soil moisture monitoring power supply, 12-Soil moisture sensor, 13-First conductive rod, 14-Second conductive rod, 15-Sliding rheostat, 2-River water level monitoring unit, 21-First float, 22-First float connecting rod, 221-First insulating pressing part, 222-Second insulating pressing part, 23-First pin, 24-First sleeve, 25-First bracket, 26-First support rod, 27-Water level monitoring spring switch A, 28-Water level monitoring spring switch B, 29-River water level monitoring protection resistor, 291-Low water level protection resistor, 292-High water level protection resistor 3-Resistor, 3-River water source unit, 31-Second float, 32-Hose, 33-Filter screen, 34-Boost pump, 4-City water supply pipe, 5-Water source switching unit, 51-First electric control valve mechanism, 511-First electric control valve, 512-First transmission group, 513-First motor, 514-First insulating pressure rod, 515-First electric control switch assembly A, 5151-First spring switch A, 5152-First diode A, 516-First electric control switch assembly B, 5161-First spring switch B, 5162-First diode B, 517-First voltmeter assembly, 5171-First voltmeter meter Pan, 5172-First voltmeter pointer, 5173-First voltmeter stop contact A, 5174-First voltmeter stop contact B, 5175-First voltmeter open contact A, 5176-First voltmeter open contact B, 518-First electromagnet, 52-Second electric valve mechanism, 521-Second electric valve, 522-Second transmission assembly, 523-Second motor, 524-Second insulating pressure rod, 525-Second electric switch assembly A, 5251-Second spring switch A, 5252-Second diode A, 526-Second electric switch assembly B, 5261-Second spring switch B, 526 2-Second diode B, 527-Second voltmeter assembly, 5271-Second voltmeter dial, 5272-Second voltmeter pointer, 5273-Second voltmeter stop contact A, 5274-Second voltmeter stop contact B, 5275-Second voltmeter open contact A, 5276-Second voltmeter open contact B, 528-Second electromagnet, 529-Water storage spring switch, 53-Main power supply, 54-Water source switching unit switch, 55-Water source switching unit protection resistor, 6-Irrigation module, 61-Main water supply pipe, 62-Branch water supply pipe, 63-Several irrigation nozzles, 7-Intermittent river, 8-Vegetation. Detailed Implementation

[0023] 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.

[0024] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments. The structure and specific working process of the adaptive river water level change riparian vegetation irrigation system of the present invention are described below through specific embodiments.

[0025] Example 1

[0026] Please see Figures 1-3In this embodiment 1, the adaptive river water level change-adaptive riparian vegetation irrigation system includes a soil moisture monitoring unit 1, a river water level monitoring unit 2, a river water source unit 3, an urban water supply pipe 4, a water source switching unit 5, and an irrigation module 6. The soil moisture monitoring unit 1 is embedded in the root soil of the vegetation in the area to be irrigated, used to collect soil moisture values ​​in real time and determine whether a preset soil moisture threshold (including upper and lower limits) has been reached. The river water level monitoring unit 2 is located at intermittent river water intake points, used to collect river water level data in real time and determine whether a preset water intake threshold (lower limit) has been reached. The water source switching unit 5 includes a first electrically controlled valve mechanism 51, a second electrically controlled valve mechanism 52, a main power supply 53, a water source switching unit switch 54, and a water source switching unit protection resistor 55. The first electrically controlled valve mechanism 51 is located at the first water inlet of the water source switching unit. The water source unit 3 is connected to the outlet end of the water source unit 3. The inlet end of the water source unit 3 is placed at the intermittent river water intake point and is used to guide the river water when the river water level reaches the water intake threshold. The second electric control valve mechanism 52 is set at the second inlet end of the water source switching unit and is connected to the outlet end of the urban water supply pipe 4. The water source switching unit switch 54 and the water source switching unit protection resistor 55 are connected in series with the second electric control valve mechanism 52. The main power supply 53 is electrically connected to the river water level monitoring unit 2, the first electric control valve mechanism 51, and the second electric control valve mechanism 52. Based on the preset soil moisture threshold (including upper and lower limits) and water intake threshold (lower limit), it controls the first electric control valve mechanism 51 or the second electric control valve mechanism 52 to automatically select one to open and supply water to the irrigation module 6. The inlet end of the irrigation module 6 is connected to the outlet end of the water source switching unit 5 and is used to spray and irrigate the vegetation.

[0027] In this embodiment, the first electrically controlled valve mechanism 51 includes a first electrically controlled valve 511, a first transmission assembly 512, a first motor 513, a first insulating pressure rod 514, a first electrically controlled switch assembly A 515, a first electrically controlled switch assembly B 516, a first voltmeter assembly 517, and a first electromagnet 518. The first electrically controlled switch assembly A 515 includes a first spring switch A 5151 and a first diode A 5152 connected in parallel. The first electrically controlled switch assembly B 516 includes a first spring switch B 5161 and a first diode B 5161 connected in parallel. The first diode A 5152 and the first diode B 5161 are used to control the circuit of the first voltmeter assembly 517 to maintain unidirectional conduction under different voltage conditions. The first voltmeter assembly 517 includes a first voltmeter dial 5171, a first voltmeter pointer 5172, a first voltmeter stop contact A 5173, a first voltmeter stop contact B 5174, and a first voltmeter open contact A 5175. 5175 and the first voltmeter open contact B 5176, and the first electrically controlled valve 511 are used to control the opening or closing of the river water source unit 3 supplying river water to the irrigation module 6. The first transmission group 512 consists of a first transmission rack and several gears meshing with each other. The shaft of one gear is connected to one end of the first electrically controlled valve 511, the shaft of the second gear is connected to the transmission shaft of the first motor 513, and the third gear is located at one end of the first transmission rack and connected to the T-shaped longitudinal end of the first insulating pressure rod 514. The T-shaped transverse end of the first insulating pressure rod 514 is located between the first spring switch A 5151 and the first spring switch B 5161. The first motor 513 drives the first transmission rack to move, thereby driving the T-shaped transverse end of the first insulating pressure rod 514 to move back and forth between the first spring switch A 5151 and the first spring switch B 5161 to achieve the opening / closing of the first spring switch A 5151 or the first spring switch B 5161. The other end of the first transmission rack is located close to the water source switching unit switch B 56.The pointer 5172 of the first voltmeter is rotatably mounted at the center of the dial 5171 of the first voltmeter. The stop contacts A 5173 and B 5174, and the open contacts A 5175 and B 5176 of the first voltmeter are arranged in pairs around the center of the dial 5171. When the pointer 5172 is in a low-voltage position, its two ends are in contact with the stop contacts A 5173 and B 5174, respectively. When the pointer 5172 is in a high-voltage position, its two ends are in contact with the open contacts A 5175 and B 5176, respectively. 5176 are in contact, and the first electromagnet 518 is set near one end of the first voltmeter pointer 5172; in the free state, the deflection state of the first voltmeter pointer 5172 is determined by the detection voltage of the soil moisture monitoring unit 1, and the first electromagnet 518 is used to forcibly change the deflection state of the first voltmeter pointer 5172. The dial 5171 of the first voltmeter is connected in parallel with the soil moisture monitoring unit 1. The two ends of the pointer 5172 of the first voltmeter are electrically connected to the two poles of the main power supply 54, respectively. One end of the first spring switch A 5151 is electrically connected to the first voltmeter open contact A 5175 and the first voltmeter stop contact B 5174, respectively. The other end of the first spring switch A 5151 is electrically connected to one end of the first motor 513. One end of the first spring switch B 5161 is electrically connected to the other end of the first motor 513, respectively. The other end of the first spring switch B 5161 is electrically connected to the first voltmeter stop contact A 5173 and the first voltmeter open contact B 5176, respectively. The first electromagnet 518 is electrically connected to the river water level monitoring unit 1.

[0028] In this embodiment, the second electrically controlled valve mechanism 52 includes a second electrically controlled valve 521, a second transmission assembly 522, a second motor 523, a second insulating pressure rod 524, a second electrically controlled switch assembly A 525, a second electrically controlled switch assembly B 526, a second voltmeter assembly 527, a second electromagnet 528, and a water storage spring switch 529. The second transmission assembly 522 consists of a second transmission rack and several gears meshing with each other. The second electrically controlled switch assembly A 525 includes a second spring switch A 5251 and a second diode A 5252 connected in parallel. The second electrically controlled switch assembly B 526 includes a second spring switch B 5261 and a second diode B 5262 connected in parallel. The second voltmeter assembly 527 includes a second voltmeter dial 5271, a second voltmeter pointer 5272, a second voltmeter stop contact A 5273, a second voltmeter stop contact B 5274, and a second voltmeter open contact A 5275. 5275 and the second voltmeter open contact B5276, and the second electrically controlled valve 521 are used to control the opening or closing of the water storage unit 7 supplying river water to the irrigation module 6. The second transmission assembly 522 consists of a meshing second transmission rack and several gears. The shaft of one gear is connected to one end of the second electrically controlled valve 521. The shaft of the second gear is connected to the transmission shaft of the second motor 523. The third gear is located at one end of the second transmission rack and connected to the T-shaped longitudinal end of the second insulating pressure rod 524. The T-shaped transverse end of the second insulating pressure rod 524 is located between the second spring switch A 5251 and the second spring switch B 5261 and is used to control the opening / closing of either the second spring switch A 5251 or the second spring switch B 5261. The other end of the second transmission rack is adjacent to the water storage spring switch 529. The pointer 5272 of the second voltmeter is rotatably located at the center of the dial 5271 of the second voltmeter. The second voltmeter stop contacts A 5273 and B 5274, and the second voltmeter open contacts A 5275 and B 5276 are also connected. 5276 are arranged in pairs around the center of the dial 5271 of the second voltmeter. When the pointer 5272 of the second voltmeter is in the low voltage position, its two ends are in contact with the stop contact A 5273 and the stop contact B 5274 of the second voltmeter, respectively. When the pointer 5272 of the second voltmeter is in the high voltage position, its two ends are in contact with the open contact A 5275 and the open contact B 5276 of the second voltmeter, respectively. The second electromagnet 528 is arranged adjacent to one end of the pointer 5272 of the second voltmeter. The water storage spring switch 529 is electrically connected to the submersible pump 72 in the water storage unit 7 and is used to control the opening or closing of the water storage unit 7 supplying urban water to the second electric control valve mechanism 52.The dial 5271 of the second voltmeter is connected in parallel with the soil moisture monitoring unit 1. The two ends of the pointer 5272 of the second voltmeter are electrically connected to the two poles of the main power supply 54. One end of the second spring switch A 5251 is electrically connected to the open contact A5275 and the stop contact B 5274 of the second voltmeter. The other end of the second spring switch A 5251 is electrically connected to one end of the second motor 523. One end of the second spring switch B 5261 is electrically connected to the other end of the second motor 523. The other end of the second spring switch B 5261 is electrically connected to the stop contact A 5273 and the open contact B 5276 of the second voltmeter. The second electromagnet 528 is electrically connected to the river water level monitoring unit 2.

[0029] In this embodiment, taking the first voltmeter assembly 517 as an example, the part where the center of the first voltmeter pointer 5172 contacts the first voltmeter dial 5171 is an insulated section, while the two tips of the first voltmeter pointer 5172 are conductive ends. Simultaneously, the surface of the first electromagnet 518 adjacent to the first voltmeter pointer 5172 is coated with an insulating coating. This facilitates good contact between the two pairs of contacts—the first voltmeter stop contact A-first voltmeter stop contact B and the first voltmeter open contact A-first voltmeter open contact B—at different voltage deflection positions, and prevents the first electromagnet 518 from conducting with the first voltmeter pointer 5172 when it attracts it, thereby achieving the switching of the state of the first electrically controlled valve 511. Similarly, the second voltmeter assembly 527 has a similar structure to the first voltmeter assembly 517, and the second electromagnet 528 has a similar structure to the first electromagnet 518. In addition, other electromagnets and insulating pressure rods installed near the spring switch are also coated with an insulating coating on one end surface of the adjacent spring switch to prevent the electromagnet or insulating pressure rod from conducting when it contacts the adjacent spring switch; the first and second transmission racks mentioned above can be supported and limited by sleeve-type supports to ensure that they can reciprocate in a preset direction and distance.

[0030] In this embodiment, the soil moisture monitoring unit 1 includes a soil moisture monitoring power supply 11, a soil moisture sensor 12, a first conductive rod 13, a second conductive rod 14, and a sliding rheostat 15. The positive terminal of the soil moisture monitoring power supply 11 is electrically connected to one end of the first conductive rod 13, and the other end of the first conductive rod 13 is embedded in the soil moisture sensor 12. One end of the second conductive rod 14 is embedded in the soil moisture sensor 12, and the other end of the second conductive rod 14 is electrically connected to the negative terminal of the soil moisture monitoring power supply 11 via the sliding rheostat 15. The conductive ends of the first conductive rod 13 and the second conductive rod 14 are connected in parallel with the dial 5171 of the first voltmeter, and the conductive ends of the first conductive rod 13 and the second conductive rod 14 are connected in parallel with the dial 5271 of the second voltmeter. The exposed metal portions of the first conductive rod 13 and the second conductive rod 14 embedded in the soil moisture sensor 12 are coated with a waterproof coating to improve the durability of the monitoring device.

[0031] In this embodiment, the river water level monitoring unit 2 includes a first float 21, a first float connecting rod 22, a first pin 23, a first sleeve 24, a first bracket 25, a first support rod 26, a water level monitoring spring switch A27, a water level monitoring spring switch B28, and a river water level monitoring protection resistor 29. The river water level monitoring protection resistor 29 includes a low water level protection resistor 291 and a high water level protection resistor 292. One end of the first float connecting rod 22 passes through the first float 21 and is fixed to both ends of the first float 21 by the first pin 23. The other end of the first float connecting rod 22 passes through the first sleeve 24 and forms a T-shaped first insulating pressing part 221 and a second insulating pressing part 222. The outer wall of the middle part of the first sleeve 24 is fixedly connected to the first support rod 26. The first support rod 26 is horizontally and movably embedded in the first bracket 25. The length of the first insulating pressing part 221 is less than the length of the second insulating pressing part 222. The first insulating pressing part 221 is arranged close to the water level monitoring spring switch A 27, and the second insulating pressing part 222 is arranged close to the water level monitoring spring switch B 28. The water level monitoring spring switch A 27 and the water level monitoring spring switch B 28 can be turned on by one of them. One end of the water level monitoring spring switch A 27 is electrically connected to the negative terminal of the main power supply 54 via the low water level protection resistor 291, and the other end of the water level monitoring spring switch A 27 is electrically connected to the positive terminal of the main power supply 54 via the first electromagnet 518. One end of the water level monitoring spring switch B 28 is electrically connected to the negative terminal of the main power supply 54 via the high water level protection resistor 292, and the other end of the water level monitoring spring switch B 28 is electrically connected to the positive terminal of the main power supply 54 via the second electromagnet 528.

[0032] In this embodiment, the river water source unit 3 includes a second float 31, a hose 32, a filter screen 33, and a booster pump 34. One end of the hose 32 passes through the second float 31, and the end forms a trapezoidal water inlet with the filter screen 33 installed. The other end of the hose 32 is connected to the water inlet of the first electrically controlled valve mechanism 51 via the booster pump 34. The filter screen 33 has a double-layer filtration structure, with a first layer of 5mm stainless steel filter screen and a second layer of 100-mesh nylon filter screen, which facilitates thorough filtration.

[0033] In this embodiment, the irrigation module 6 includes a main water supply pipe 61, a branch water supply pipe 62, and several irrigation nozzles 63. The main water supply pipe 61 is connected to the water outlet of the water source switching unit 5, and the several irrigation nozzles 63 are connected to the main water supply pipe 61 through the branch water supply pipe 62, for uniformly spraying and irrigating the vegetation 9.

[0034] In this embodiment, the specific operational judgment process of the intermittent riverbank vegetation irrigation system is as follows:

[0035] 1) When the soil moisture value collected by the soil moisture monitoring unit 1 reaches the upper limit of the preset soil moisture threshold, the soil moisture sensor 12 detects that the soil moisture is too high. Since the soil moisture increases, the soil resistance will decrease, causing the pointers of the first voltmeter 5172 and the second voltmeter 5272 to deflect to the low voltage position (left deflection). The readings of the two voltmeters naturally decrease, thereby driving the first electric control valve 511 and the second electric control valve 521 to close and stop the output of the water storage source.

[0036] 2) When the soil moisture value collected by soil moisture monitoring unit 1 does not reach the preset lower limit of soil moisture threshold, and the river water level data collected by river water level monitoring unit 2 reaches the water intake threshold, the soil moisture sensor 12 detects that the soil moisture is too low. Since the decrease in soil moisture will cause the soil resistance to increase, the pointer 5172 of the first voltmeter will automatically deflect to the high voltage position. Meanwhile, the river water level monitoring unit 2 detects that the water volume in the intermittent river is sufficient, causing the second electromagnet 528 to conduct and attract the pointer 5272 of the second voltmeter to deflect to the low voltage position. This will drive the first electrically controlled valve 511 to open and the second electrically controlled valve 521 to close, and drive the river water source unit 3 to deliver river water to the irrigation module 6. That is, when the soil moisture is too low and the water volume in the intermittent river is sufficient, the system switches to using only the river water source for direct irrigation.

[0037] 3) When the soil moisture value collected by soil moisture monitoring unit 1 does not reach the preset lower limit of soil moisture threshold, and the river water level data collected by river water level monitoring unit 2 does not reach the water intake threshold, the soil moisture sensor 12 detects that the soil moisture is too low. Since the decrease in soil moisture will cause the soil resistance to increase, the pointer of the second voltmeter 5272 will automatically deflect to the high voltage position. Meanwhile, the river water level monitoring unit 2 detects that the water volume in the intermittent river is insufficient, causing the first electromagnet 518 to conduct and attract the pointer of the first voltmeter 5172 to deflect to the low voltage position. This will drive the first electrically controlled valve 511 to close and the second electrically controlled valve 521 to open, and drive the city water supply pipe 4 to deliver stored water to the irrigation module 6. That is, when the soil moisture is too low and the water volume in the intermittent river is insufficient, the system switches to using the city water source for irrigation.

[0038] The core of the adaptive river water level change riparian vegetation irrigation system in this invention lies in the precise automatic switching between different water sources by accurately monitoring river water level data and soil moisture values. This effectively utilizes river water during intermittent river flow periods to alleviate urban water supply pressure, optimize the overall allocation structure of urban water resources, and improve water resource utilization efficiency.

[0039] 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. A self-adapting river water level change alongshore vegetation irrigation system, characterized in that, The application relates to a water source switching unit for a water source switching irrigation system. The soil humidity monitoring unit is embedded in the soil of the vegetation roots in the area to be irrigated, and is used for collecting the soil humidity value in real time and judging whether the preset soil humidity threshold is reached. The river water level monitoring unit is arranged at the water taking point of the intermittent river, and is used for collecting the river water level data in real time and judging whether the preset water taking threshold is reached. The water source switching unit comprises a first electric control valve mechanism, a second electric control valve mechanism, a main power supply, a water source switching unit switch and a water source switching unit protection resistor. The second electric control valve mechanism is arranged at the second water inlet end of the water source switching unit and is connected with the water outlet end of the city water supply pipe.

2. The self-adapting river stage change coastal vegetation irrigation system as claimed in claim 1, wherein, The first electric control valve mechanism comprises a first electric control valve, a first transmission group, a first electric motor, a first insulation pressure rod, a first electric control switch assembly A, a first electric control switch assembly B, a first voltmeter assembly and a first electromagnet. The first electric control switch assembly A comprises a first spring switch A and a first diode A which are connected in parallel. The first electric control switch assembly B comprises a first spring switch B and a first diode B which are connected in parallel. The first voltmeter assembly comprises a first voltmeter dial, a first voltmeter pointer, a first voltmeter stop contact A, a first voltmeter stop contact B, a first voltmeter opening contact A and a first voltmeter opening contact B. The first electric control valve is used for controlling the opening or closing of the river water source unit for conveying the river water source to the irrigation module. The first transmission group is composed of a first transmission rack and several gears meshing with each other, the shaft of one gear is connected with one end of the first electric control valve, the shaft of the second gear is connected with the transmission shaft of the first electric motor, the third gear is arranged at one end of the first transmission rack and connected with the T-shaped longitudinal end of the first insulation pressure rod, the T-shaped transverse end of the first insulation pressure rod is located between the first spring switch A and the first spring switch B and is used for controlling the opening / closing of the first spring switch A or the first spring switch B, the other end of the first transmission rack is arranged adjacent to the water source switching unit switch B, the first voltage meter pointer is rotatably arranged at the center of the first voltage meter dial, the first voltage meter stop contact A, the first voltage meter stop contact B, the first voltage meter opening contact A and the first voltage meter opening contact B are arranged in pairs around the center of the first voltage meter dial, when the first voltage meter pointer is in the low voltage position, the two ends of the first voltage meter pointer are in contact with the first voltage meter stop contact A and the first voltage meter stop contact B respectively, when the first voltage meter pointer is in the high voltage position, the two ends of the first voltage meter pointer are in contact with the first voltage meter opening contact A and the first voltage meter opening contact B respectively, one end of the first electromagnet is arranged adjacent to the first voltage meter pointer; The first voltage meter dial is connected in parallel with the soil humidity monitoring unit, the two ends of the first voltage meter pointer are electrically connected with the two poles of the main power supply respectively, one end of the first spring switch A is electrically connected with the first voltage meter opening contact A and the first voltage meter stop contact B respectively, the other end of the first spring switch A is electrically connected with one end of the first electric motor, one end of the first spring switch B is electrically connected with the other end of the first electric motor, the other end of the first spring switch B is electrically connected with the first voltage meter stop contact A and the first voltage meter opening contact B respectively, the first electromagnet is electrically connected with the river water level monitoring unit; The second electric control valve mechanism includes a second electric control valve, a second transmission group, a second electric motor, a second insulation pressure rod, a second electric control switch assembly A, a second electric control switch assembly B, a second voltage meter assembly, a second electromagnet and a water storage spring switch, the second transmission group is composed of a second transmission rack and several gears meshing with each other, the second electric control switch assembly A includes a second spring switch A and a second diode A connected in parallel, the second electric control switch assembly B includes a second spring switch B and a second diode B connected in parallel, the second voltage meter assembly includes a second voltage meter dial, a second voltage meter pointer, a second voltage meter stop contact A, a second voltage meter stop contact B, a second voltage meter opening contact A and a second voltage meter opening contact B, the second electric control valve is used for controlling the opening or closing of the city water supply pipe to the irrigation module to deliver river water source; The second transmission group is composed of a second transmission rack and several gears meshing with each other, the shaft center of one gear is connected with one end of the second electric valve, the shaft center of the second gear is connected with the transmission shaft of the second motor, the third gear is arranged at one end of the second transmission rack and connected with the T-shaped longitudinal end of the second insulation pressure rod, the T-shaped transverse end of the second insulation pressure rod is located between the second spring switch A and the second spring switch B and is used for controlling the opening / closing of the second spring switch A or the second spring switch B, the other end of the second transmission rack is arranged adjacent to the water storage spring switch, the second voltmeter pointer is rotatably arranged at the center of the second voltmeter dial, the second voltmeter stop contact A and the second voltmeter stop contact B are arranged in pairs with the second voltmeter opening contact A and the second voltmeter opening contact B around the center of the second voltmeter dial, when the second voltmeter pointer is in a low voltage position, the two ends of the second voltmeter pointer are respectively in contact with the second voltmeter stop contact A and the second voltmeter stop contact B, when the second voltmeter pointer is in a high voltage position, the two ends of the second voltmeter pointer are respectively in contact with the second voltmeter opening contact A and the second voltmeter opening contact B, one end of the second electromagnet is arranged adjacent to the second voltmeter pointer; The second voltmeter dial is connected in parallel with the soil humidity monitoring unit, the two ends of the second voltmeter pointer are electrically connected with the two poles of the main power supply, one end of the second spring switch A is electrically connected with the second voltmeter opening contact A and the second voltmeter stop contact B, the other end of the second spring switch A is electrically connected with one end of the second motor, one end of the second spring switch B is electrically connected with the other end of the second motor, the other end of the second spring switch B is electrically connected with the second voltmeter stop contact A and the second voltmeter opening contact B, and the second electromagnet is electrically connected with the river water level monitoring unit.

3. The self-adapting river stage change coastal vegetation irrigation system as claimed in claim 2, wherein, The soil humidity monitoring unit comprises a soil humidity monitoring power supply, a soil humidity sensor, a first conductive rod, a second conductive rod and a sliding rheostat. The positive pole of the soil humidity monitoring power supply is electrically connected with one end of the first conductive rod, the other end of the first conductive rod is embedded in the soil humidity sensor, one end of the second conductive rod is embedded in the soil humidity sensor, and the other end of the second conductive rod is electrically connected with the negative pole of the soil humidity monitoring power supply through the sliding rheostat. The conductive ends of the first conductive rod and the second conductive rod are connected in parallel with the first voltmeter dial and the second voltmeter dial.

4. The self-adapting river stage change coastal vegetation irrigation system as claimed in claim 2, wherein, The river water level monitoring unit comprises a first floating ball, a first floating ball connecting rod, a first bolt, a first sleeve, a first support, a first support rod, a water level monitoring spring switch A, a water level monitoring spring switch B and a river water level monitoring protection resistor, the river water level monitoring protection resistor comprises a low water level protection resistor and a high water level protection resistor. The first floating ball connecting rod penetrates the first floating ball at one end, and the two ends of the first floating ball are fixed by the first plug. The other end of the first floating ball connecting rod penetrates the first sleeve, and the end forms a T-shaped first insulation down-pressing part and a second insulation down-pressing part. The middle part of the outer wall of the first sleeve is fixedly connected with the first supporting rod, and the first supporting rod is horizontally movably embedded in the first support. The length of the first insulation down-pressing part is less than the length of the second insulation down-pressing part. The first insulation down-pressing part is arranged adjacent to the water level monitoring spring switch A, and the second insulation down-pressing part is arranged adjacent to the water level monitoring spring switch B. The water level monitoring spring switch A and the water level monitoring spring switch B are opened alternately. One end of the water level monitoring spring switch A is electrically connected with the negative electrode of the main power source through the low water level protection resistor, and the other end of the water level monitoring spring switch A is electrically connected with the positive electrode of the main power source through the first electromagnet. One end of the water level monitoring spring switch B is electrically connected with the negative electrode of the main power source through the high water level protection resistor, and the other end of the water level monitoring spring switch B is electrically connected with the positive electrode of the main power source through the second electromagnet.

5. The self-adapting river stage change coastal vegetation irrigation system as claimed in claim 2, wherein, The river water source unit comprises a second floating ball, a hose, a filter screen and a booster pump. One end of the hose penetrates the second floating ball, and the end forms a trapezoidal water inlet and is provided with the filter screen. The other end of the hose is communicated with the water inlet end of the first electric control valve mechanism through the booster pump.

6. The self-adapting river stage change coastal vegetation irrigation system as claimed in claim 2, wherein, The irrigation module comprises a main water supply pipe, branch water supply pipes and a plurality of irrigation nozzles. The main water supply pipe is connected with the water outlet end of the water source switching unit. The plurality of irrigation nozzles are communicated with the main water supply pipe through the branch water supply pipes, and are used for uniformly spraying irrigation to vegetation.

7. The self-adapting river stage change coastal vegetation irrigation system as claimed in claim 2, wherein, When the soil humidity value collected by the soil humidity monitoring unit reaches the preset upper limit of the soil humidity threshold value, the first voltmeter pointer and the second voltmeter pointer are deflected to the low voltage position, the first electric control valve and the second electric control valve are driven to be closed, and the water supply irrigation is stopped.

8. The self-adapting river stage change coastal vegetation irrigation system as claimed in claim 2, wherein, When the soil humidity value collected by the soil humidity monitoring unit does not reach the lower limit of the preset soil humidity threshold value, and the river water level data collected by the river water level monitoring unit reaches the water taking threshold value, the first voltmeter pointer is deflected to the high voltage position and the second voltmeter pointer is deflected to the low voltage position, the first electric control valve is driven to be opened and the second electric control valve is driven to be closed, and the river water source unit is driven to deliver river water source to the irrigation module.

9. The self-adapting river stage change coastal vegetation irrigation system as claimed in claim 2, wherein, When the soil humidity value collected by the soil humidity monitoring unit does not reach the lower limit of the preset soil humidity threshold value, and the river water level data collected by the river water level monitoring unit does not reach the water taking threshold value, the first voltmeter pointer is deflected to the low voltage position and the second voltmeter pointer is deflected to the high voltage position, the first electric control valve is driven to be closed and the second electric control valve is driven to be opened, and the city water supply pipe is driven to deliver city water source to the irrigation module.

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