Tidal irrigation control system and use method thereof

Abstract

The invention discloses a tidal irrigation control system and a using method thereof.The system comprises a water level detection mechanism, a control box, a circulating water inlet and drainage system, a seedbed and a push rod bed lifting mechanism, and the water level detection mechanism is used for collecting the water level value of a bed box in the seedbed and transmitting the water level value to the control box; the control box is used for determining irrigation operation or drainage operation according to the water level value and irrigation parameters set by a user; if the operation is irrigation operation, the circulating water inlet and drainage system is controlled to convey water in the liquid return pool into a bed box in the seedbed; if the operation is the drainage operation, controlling a circulating water inlet and drainage system to return water in a bed box in the seedbed to a liquid return pool, and controlling a push rod bed lifting mechanism to lift up the unfixed end of the bottom of the bed box in the seedbed so as to enable the water in the bed box to flow out thoroughly and quickly; the bottoms of the bed boxes in the seedbed are located on the same horizontal plane, one end of the bottom is fixed, the bottom of the other corresponding end is not fixed, and the bottom of the fixed end is provided with a concave water inlet and outlet. The push rod bed lifting mechanism is arranged below the unfixed end of the bottom of the bed box for bed seedlings, so that water in the bed box can quickly and thoroughly flow out; the concave water inlet and outlet is formed in the fixed end of the bottom surface of the bed box, so that the overall drainage efficiency of the system is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of seedling cultivation, and in particular relates to a tidal irrigation control system and a use method thereof. Background Art

[0002] Traditional seedling irrigation mainly includes artificial sprinkler irrigation, drip irrigation and flood irrigation. When used in citrus seedlings, it is easy to cause water and fertilizer resource waste, soil pollution, drip tube blockage, root rot, and the breeding of pests and diseases. The process of tidal irrigation simulates the ebb and flow of seawater. When the tide is high, the plant seedlings use capillary action to absorb water and nutrients; after the tide recedes, they are recovered and can be recycled after filtration and disinfection. Tidal irrigation has the advantages of high water and fertilizer utilization efficiency, few pests and diseases, and low labor costs. However, the automation and intelligence level of tidal irrigation systems studied by domestic and foreign scholars needs to be improved, and the system is mostly suitable for vegetable and flower cultivation. Citrus seedlings have a well-developed root system >10cm, sturdy plants, and seedling containers up to 35cm, which are very different from vegetables and flowers. Therefore, new requirements are put forward for how to use tidal irrigation technology in citrus seedling cultivation.

[0003] In view of the characteristics of citrus root system and seedling container, during tidal irrigation, the citrus seedlings are placed in the bed box, and the water, fertilizer and nutrient solution are pumped to the bed box by a water pump, submerging the box to a depth of 20-30mm. The water, fertilizer and nutrient solution rely on the drainage holes at the bottom of the seedlings and the capillary action of the matrix to enter the seedlings and rise to the matrix to meet the needs of water and nutrients during the growth and development of the seedlings. After the matrix nutrient solution is fully absorbed, the nutrient solution is discharged and returned to the nutrient solution pool for use after filtration, precipitation and disinfection. By studying the effects of parameters such as irrigation height, irrigation frequency and irrigation duration on the growth and development of plant seedlings, matrix properties and water utilization rate, it is found that traditional tidal irrigation is prone to water pipe blockage, slow drainage, low return water efficiency and root rot when used for citrus seedlings. The bed box needs to be cleaned manually, and the drainage process is time-consuming and labor-intensive. Therefore, it is of great significance to design a tidal irrigation system that is low-cost, simple to deploy, suitable for citrus seedlings, can provide a healthy growth environment, and accelerates drainage. Summary of the invention

[0004] In order to solve at least one technical problem in the above-mentioned prior art, the present invention provides a tidal irrigation control system and a method for using the same.

[0005] A first object of the present invention is to provide a tidal irrigation control system.

[0006] A second object of the present invention is to provide a method for using a tidal irrigation control system.

[0007] The first object of the present invention can be achieved by adopting the following technical solutions: A tidal irrigation control system includes a water level detection mechanism, a control box, a circulating water supply and drainage system, a seedling bed and a push rod bed lifting mechanism, wherein: A circulating water inlet and outlet system is used to transport water in the liquid return pool to the bed box in the seedbed, or to transport water in the bed box in the seedbed back to the liquid return pool; the bottom of the bed box in the seedbed is in the same horizontal plane, wherein one end of the bottom is fixed, and the corresponding other end of the bottom is not fixed, and the bottom of the fixed end is provided with a concave water inlet and outlet; The push rod bed lifting mechanism is used to lift the unfixed end of the bottom of the bed box in the seedbed so that the water in the bed box can flow out completely and quickly; The water level detection mechanism is used to collect the water level value of the bed box in the seedbed and transmit the water level value to the control box; The control box is used to determine whether it is an irrigation operation or a drainage operation according to the water level value and the irrigation parameters set by the user; if it is an irrigation operation, the circulating water supply and drainage system is controlled to transport the water in the return liquid pool to the bed box in the seedbed; if it is a drainage operation, the circulating water supply and drainage system is controlled to transport the water in the bed box in the seedbed back to the return liquid pool, and at the same time the push rod bed lifting mechanism is controlled to lift the unfixed end of the bottom of the bed box in the seedbed.

[0008] Further, the control box includes an STM32 control system and a relay; The STM32 control system is used to analyze the water level value and the irrigation parameters set by the user to determine whether it is an irrigation operation or a drainage operation; Relays are used to control the circulating water supply and drainage system and the push rod bed lifting mechanism.

[0009] Furthermore, the irrigation parameters include the water level of the bed box in the seedbed, the irrigation time and the lifting angle of the push rod.

[0010] Furthermore, the circulating water supply and drainage system includes a water pump, a solenoid valve, a liquid return tank and a disinfection device; If it is an irrigation operation, the relay is used to drive the solenoid valve and the water pump to start the irrigation mode, and the disinfected water is transported from the return liquid tank to the bed box in the seedling bed; wherein, the water in the return liquid tank is disinfected by the disinfection device to ensure the cleanliness of the irrigation water; If it is a drainage operation, the relay is used to drive the solenoid valve and the water pump to start the drainage mode, and the water is transported back from the bed box in the seedbed to the return liquid tank.

[0011] Furthermore, the push rod bed lifting mechanism is a push rod mechanism, which is arranged below the unfixed end of the bottom of the bed box in the seedbed, and is used to lift the unfixed end of the bottom of the bed box to form a height difference between the two ends of the bottom of the bed box.

[0012] Furthermore, it also includes a paddle drainage mechanism; If it is a drainage operation, the paddle drainage mechanism is controlled to spirally discharge the impurities in the bed box, thereby improving the sewage discharge efficiency, avoiding soil or other impurities from clogging the inlet and outlet, and improving the drainage efficiency.

[0013] Furthermore, the paddle drainage mechanism is arranged just above the water inlet and outlet of the bed box, and comprises a propeller blade, a slide rail, a slider, a support rod and a folding bracket, wherein the center line of the slide rail is parallel to the horizontal line; the slider is buckled on the slide rail and slides horizontally along the slide rail; the propeller blade is fixed on the folding bracket; one end of the support rod is connected to the slider, and the other end is fixed to the folding bracket, and when the slider slides, one end of the support rod moves horizontally in the same direction as the slider, thereby changing the angle between the folding bracket and the slide rail; If it is a drainage operation, the motor of the slider is driven by a relay, and the slider moves. When the slider slides to the angle between the folding bracket and the slide rail is 90 o , a relay is used to drive the motor of the propeller blades to rotate the propeller blades in the downward state. During the rotation process, all the water is pushed to the inlet and outlet, and at the same time, a rotating spiral force is generated to discharge the impurities spirally, thereby improving the sewage discharge efficiency.

[0014] Furthermore, a filter mesh is provided on the inlet and outlet, and the diameter of the filter mesh is slightly larger than the diameter of the hole at the top of the inlet and outlet to filter impurities in the water and ensure the cleanliness of the water during irrigation; a reinforcement structure composed of metal wire is provided in the inlet and outlet to prevent the filter mesh from becoming uneven.

[0015] The second object of the present invention can be achieved by adopting the following technical solutions: A method for using a tidal irrigation control system is implemented based on the above-mentioned tidal irrigation control system, and the method comprises: Collect the water level value of the bed box in the seedbed; Determine whether it is irrigation operation or drainage operation according to the water level value and the irrigation parameters set by the user; If it is an irrigation operation, the water in the return liquid pool is transported to the bed box in the seedbed; if it is a drainage operation, the water in the bed box in the seedbed is transported back to the return liquid pool, and at the same time, the unfixed end of the bottom of the bed box in the seedbed is lifted to allow the water in the bed box to flow out completely and quickly; wherein, a recessed water inlet and outlet is provided at the fixed end of the bottom of the bed box.

[0016] Furthermore, the method also includes: if it is a drainage operation, the impurities in the bed box are spirally discharged to improve the sewage discharge efficiency, avoid soil or other impurities blocking the inlet and outlet, and improve the drainage efficiency of the bed box.

[0017] The present invention has the following beneficial effects compared with the prior art: The present invention provides a push rod bed lifting mechanism below the unfixed end of the bottom of the seedling bed box in the tidal irrigation system, so that the water in the bed box can flow out quickly and completely; provides a concave water inlet and outlet at the fixed end of the bottom surface of the bed box, so as to improve the overall drainage efficiency of the system; and provides a paddle drainage mechanism just above the water inlet and outlet of the bed box, so that impurities can be spirally discharged during drainage, thereby improving sewage discharge efficiency, avoiding soil or other impurities from clogging the drain outlet, and improving drainage efficiency. In addition, through the coordinated cooperation of the control box, the circulating water inlet and outlet system, the water level detection mechanism, the paddle drainage mechanism, and the push rod bed lifting mechanism, a circulating water supply system is formed, which significantly improves the use efficiency of irrigation water, reduces pollutants in the water, ensures the purity of the water quality in the bed box, effectively prevents the occurrence of pests and diseases and water quality deterioration, and realizes the intelligent management of seedling irrigation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 is a structural block diagram of a tidal irrigation control system according to an embodiment of the present invention; Figure 2 is a schematic diagram of a blade drainage mechanism in a drainage state according to an embodiment of the present invention; Figure 3 is a schematic diagram of a paddle drainage mechanism in a stowed state according to an embodiment of the present invention; Figure 4 Schematic diagram of an inlet and outlet of an embodiment of the present invention; Figure 5 is a cross-sectional view of a tidal irrigation control system according to an embodiment of the present invention; Figure 6 It is a structural schematic diagram of a tidal irrigation control system according to an embodiment of the present invention; Figure 2~Figure 5 Description of reference numerals in the figures: 1-propeller blade, 2-slide rail, 3-slider, 4-support rod, 5-folding bracket, 6-bed box, 7-inlet and outlet, 8-filter mesh, 9-water level sensor, 10-control box, 11-push rod bed lifting mechanism, 12-return liquid tank, 13-water pump, 14-blade drainage mechanism, 15-connecting seat. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. It should be understood that the specific embodiments described are only used to explain the present application and are not used to limit the present application.

[0021] Example: like Figure 1 As shown, this embodiment provides a tidal irrigation control system, which mainly includes six parts: a control box, a circulating water supply and drainage system, a water level detection mechanism, a seedbed, a paddle drainage mechanism, and a push rod bed lifting mechanism. The water level detection mechanism is used to monitor the water level value of the bed box in the seedbed; the control box is used to determine whether it is an irrigation mode or a drainage mode according to the set irrigation parameters and the water level value of the bed box; if it is an irrigation mode, water is transported to the bed box in the seedbed through the circulating water supply and drainage system; if it is a drainage mode, the water in the bed box in the seedbed is quickly and thoroughly drained through the paddle drainage mechanism and the push rod bed lifting mechanism.

[0022] Specifically, the water level detection mechanism accurately collects the water level value of the bed box in the seedling bed through the water level sensor, and transmits the water level value to the control box.

[0023] Specifically, the control box includes an STM32 control system and relays. System users can customize irrigation parameters in the STM32 control system according to seedling cultivation needs, such as water level, irrigation time, and push rod lifting angle. The STM32 control system analyzes and processes the irrigation parameters and the collected water level values ​​to determine whether it is an irrigation operation or a drainage operation.

[0024] Specifically, the circulating water supply and drainage system includes a water pump, a solenoid valve, a liquid return tank and a disinfection device. If it is an irrigation operation, the water pump and the solenoid valve in the circulating water supply and drainage system are driven by a relay to start the irrigation mode and transport water from the liquid return tank to the bed box in the seedling bed. Among them, the disinfection device is used to disinfect the water in the liquid return tank to ensure the cleanliness of the irrigation water.

[0025] To further ensure the cleanliness of the water, the disinfected water in the return liquid pool is filtered and transported to the bed boxes in the seedbed to irrigate the citrus seedlings.

[0026] When the irrigation reaches the set water level, the water level detection mechanism feeds back the collected water level value to the STM32 control system, and the STM32 control system stops the water supply operation of the solenoid valve through the relay.

[0027] Specifically, the push rod bed lifting mechanism is a push rod mechanism, and the push rod mechanism is an existing structure. The bottom of the bed box in the seedbed is in the same horizontal plane, wherein one end of the bottom is fixed, and a push rod mechanism is provided at the bottom corresponding to the other end. A concave inlet and outlet is provided at the bottom of the fixed end of the bed box, and the inlet and outlet are used to hold water and serve as a planting bed for citrus seedlings. If it is a drainage operation, a relay is used to drive the water pump and the solenoid valve in the circulating inlet and outlet system to turn on the drainage mode to transport water from the bed box in the seedbed to the return liquid pool; at the same time, a relay is used to drive the push rod mechanism, and the unfixed end of the bed box is lifted to a certain angle through the lifting and lowering control of the push rod, so that the water flows from high to low and is concentrated around the inlet and outlet to completely drain the water in the bed box.

[0028] Specifically, Figure 2 As shown, the paddle drainage mechanism is arranged just above the water inlet and outlet of the bed box 6, and includes a propeller blade 1, a slide rail 2, a slider 3, a support rod 4 and a folding bracket 5, wherein the center line of the slide rail 2 is parallel to the horizontal line; the slider 3 is buckled on the slide rail 2 and can slide horizontally along the slide rail 2; the propeller blade 1 is fixed on the folding bracket 5; one end of the support rod 4 is connected to the slider 3, and the other end is fixed to the folding bracket 5. When the slider 3 slides, one end of the support rod 4 moves horizontally in the same direction as the slider 3, thereby changing the angle between the folding bracket 5 and the slide rail 2, that is, changing the angle between the propeller blade 1 and the slide rail 2. When the angle is 0 o When the folding bracket 5 is close to the slide rail 2, the propeller blade 1 is in the storage state. Figure 2 ; When the angle is 90 o When the folding bracket 5 is perpendicular to the slide rail 2, the propeller blade 1 is in the drainage state. Figure 3 .

[0029] During the installation process, it is necessary to ensure that the relative position between the slide rail 2 and the slider 3 is accurate. Fine-tuning can be achieved by adjusting fasteners such as gaskets and screws. In addition, the cleanliness of the slide rail 2 and the slider 3 must be maintained to prevent impurities from entering and affecting the matching effect. In order to keep the linear slide rail 2 in good operating condition, it is necessary to add an appropriate amount of lubricating oil or grease regularly.

[0030] The propeller blade 1 and the slider 3 are connected to motors respectively, which are used to control the rotation of the propeller blade 1 and the sliding of the slider respectively. If it is a drainage operation, the motors of the propeller blade 1 and the slider 3 are driven by a relay to rotate the propeller blade 1, and the slider 3 is slid until the folding bracket 5 is perpendicular to the slide rail 2. In other words, in the drainage operation, the motors of the propeller blade 1 and the slider 3 are controlled by a relay so that the propeller blade 1 is in a state where the center line is vertically downward and rotating. During the rotation process, the propeller blade 1 pushes all the water to the inlet and outlet, and at the same time generates a rotating spiral force to spiral out impurities, thereby improving the sewage discharge efficiency and avoiding the problem of soil or other impurities blocking the drain outlet. After the water is drained, the propeller blade stops working, and as the slider moves, the propeller blade 1 is in a storage state again, reducing the probability of rusting.

[0031] like Figure 4 As shown, a filter mesh 8 is provided on the inlet and outlet 7. The diameter of the filter mesh 8 is slightly larger than the diameter of the hole at the top of the inlet and outlet. It is used to filter impurities in the water to ensure the cleanliness of the water during irrigation. In order to avoid unevenness on the mesh surface, a reinforcement structure composed of metal wire is provided in the inlet and outlet. During drainage, the filter mesh 8 is used to filter out most of the impurities in the discharged water flow, and the water flows back to the return liquid pool in the circulating inlet and outlet system. The water in the return liquid pool is disinfected by a disinfection device and then used for irrigation again, thereby forming a circulating water supply system. This design can significantly improve the utilization efficiency of irrigation water, reduce pollutants in the water, ensure the purity of the water quality in the bed box, and effectively prevent the occurrence of pests and diseases and water quality deterioration.

[0032] The entire system achieves efficient management of irrigation water through precise water level monitoring and intelligent control, ensuring the stability and health of the plant growth environment.

[0033] This embodiment provides a 24V power supply for the STM32 control system in the control box, drives the switch of the 220V power supply through a relay, and the 220V power supply is connected to the push rod bed lifting mechanism and the paddle drainage mechanism.

[0034] In another embodiment, the bed box 6 is fixed at one end of the bottom to the second-layer bracket of the aluminum profile frame through a connecting seat 15 to ensure the stability of the bed box 6, wherein the bed box 6 is a rectangular structure. The water level sensor 9 in the water level detection mechanism is installed on the side wall of the bed box to detect the height of the water level. The control box 10 is arranged on the side of the second-layer bracket of the aluminum profile frame to control the water inlet and outlet operation of the circulating water inlet and outlet system, the lifting and lowering control of the push rod, and the opening and closing of the paddle drainage mechanism. The push rod bed lifting mechanism 11 is located below the unfixed end of the bottom of the bed box, and is responsible for pushing the lifting and adjusting the height of one end of the bottom of the bed box to perform irrigation and drainage operations. The return liquid tank 12 is located below the inlet and outlet of the bed box as a water storage device for storing and recycling water. The water pump 13 is connected in parallel with the solenoid valve, and one end is connected to the inlet and outlet in the bed box, and the other end is connected to the return liquid tank through a pipeline, which is responsible for the circulation of water inside the entire system, mainly including water inlet and drainage. The slide rail of the paddle drainage mechanism 14 is fixed on the third layer of the bracket of the aluminum profile frame. In order to facilitate the overall movement of the system, universal wheels are installed at the bottom of the four columns of the aluminum profile frame.

[0035] The practical use of the above-mentioned tidal irrigation control system is further explained below.

[0036] There is no water in the bed box, the water level counter is at the minimum value, the push rod system is in standby mode, the connecting seat locks the bed box to prevent sliding, and the bottom surface of the bed box coincides with the top surface of the aluminum profile.

[0037] After confirming that the system can operate normally, it starts to start: turn on the relay, open the solenoid valve, turn on the water pump to start the water inlet mode (irrigation mode), and draw water from the disinfection water tank into the bed box to perform irrigation from bottom to top. When the value collected in real time by the water level meter probe sensor reaches a certain threshold, the STM32 control system controls the relay to turn off the water pump and solenoid valve.

[0038] Using the STM32 control system, users can log in to their accounts through the capacitive touch screen and customize irrigation parameters according to seedling needs, such as water level, irrigation time, push rod lifting angle, etc. The system can control the operating status of the seedbed in real time and dynamically display the data on the display screen, so that users can monitor and adjust the irrigation process at any time. The display screen provides an intuitive interface, allowing users to view the current water level, irrigation status, and historical operating data of the system at a glance to ensure the accuracy and controllability of irrigation. The system also supports multi-user management mode, and users with different permissions can log in to their respective accounts according to their needs and make personalized operation settings.

[0039] When the water fully infiltrates the roots of the seedlings, after the set soaking time, the control box sends a drainage signal to the paddle drainage mechanism and the push rod bed lifting mechanism. The solenoid valve opens, and the water pump starts the drainage mode; the slider drives the propeller blades down to a point perpendicular to the horizontal plane, the propeller blade motor is turned on, and the propeller blades begin to rotate; at the same time, the push rod bed lifting device pushes the rod to the bottom of the bed box, so that the bottom surface of the bed box forms a certain angle with the horizontal plane to achieve the purpose of rapid drainage. The remaining water is recycled into the disinfection water tank, filtered and disinfected, and prepared for the next irrigation.

[0040] In summary, the present invention provides a tidal irrigation control system based on a fast paddle drainage device, which aims to solve the problems of water and fertilizer resource waste, soil pollution, and pests and diseases in traditional seedling irrigation methods. The system includes a seedbed, a paddle drainage mechanism, a push rod bed lifting mechanism, a circulating water inlet and outlet system, a water level monitoring mechanism, and a control box. The seedbed adopts a mobile design, which is convenient for rapid adjustment. The inner bottom surface adopts a concave design, which can guide the water in the bed box to the water inlet and outlet; the paddle drainage mechanism switches the vertical and storage states of the propeller blades through the synergistic effect of the propeller blades, the slider, and the support rod, and realizes high-speed rotation, which generates downward pressure on the water to achieve the purpose of rapid drainage; the push rod bed lifting mechanism lifts the bed box to form a certain angle with the ground, and uses gravity to accelerate the drainage process; the circulating water inlet and outlet system realizes water and fertilizer integrated irrigation and recycling through a water storage and disinfection water tank and a return liquid pool; the water level monitoring mechanism monitors the water level in real time, and the intelligent control system is based on the STM32 chip control board and the capacitive touch display screen to realize automatic irrigation operation. The system significantly improves irrigation efficiency and water and fertilizer utilization, reduces system blockage and environmental pollution, prevents root rot of citrus seedlings due to waterlogging, reduces the probability of disease and insect pests, reduces the frequency of human intervention, and ensures the efficient operation of the irrigation system.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and agreed, the terms "setting", "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The terms "upper", "lower", "left", "right" and similar expressions used are only for illustrative purposes and do not represent the only implementation method.

[0042] Those skilled in the art will appreciate that all or part of the steps in the method for implementing the above embodiments may be completed by instructing related hardware through a program, and the corresponding program may be stored in a computer-readable storage medium.

[0043] The above is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and inventive concept of the present invention within the scope disclosed by the present invention, which shall fall within the protection scope of the present invention.

Claims

1. A tidal irrigation control system, characterized in that: It includes a water level detection mechanism, a control box, a circulating water supply and drainage system, a seedling bed and a push rod lifting mechanism, among which: A circulating water inlet and outlet system is used to transport water in the liquid return pool to the bed box in the seedbed, or to transport water in the bed box in the seedbed back to the liquid return pool; the bottom of the bed box in the seedbed is in the same horizontal plane, wherein one end of the bottom is fixed, and the corresponding other end of the bottom is not fixed, and the bottom of the fixed end is provided with a concave water inlet and outlet; The push rod bed lifting mechanism is used to lift the unfixed end of the bottom of the bed box in the seedbed so that the water in the bed box can flow out completely and quickly; The water level detection mechanism is used to collect the water level value of the bed box in the seedbed and transmit the water level value to the control box; The control box is used to determine whether it is an irrigation operation or a drainage operation according to the water level value and the irrigation parameters set by the user; if it is an irrigation operation, the circulating water supply and drainage system is controlled to transport the water in the return liquid pool to the bed box in the seedbed; if it is a drainage operation, the circulating water supply and drainage system is controlled to transport the water in the bed box in the seedbed back to the return liquid pool, and at the same time the push rod bed lifting mechanism is controlled to lift the unfixed end of the bottom of the bed box in the seedbed.

2. The tidal irrigation control system according to claim 1, characterized in that: The control box includes an STM32 control system and a relay; The STM32 control system is used to analyze the water level value and the irrigation parameters set by the user to determine whether it is an irrigation operation or a drainage operation; Relays are used to control the circulating water supply and drainage system and the push rod bed lifting mechanism.

3. The tidal irrigation control system according to any one of claims 1 and 2, characterized in that: The irrigation parameters include the water level of the bed box in the seedbed, the irrigation time and the lifting angle of the push rod.

4. The tidal irrigation control system according to claim 1, characterized in that: The circulating water supply and drainage system includes a water pump, a solenoid valve, a liquid return tank and a disinfection device; If it is an irrigation operation, the relay is used to drive the solenoid valve and the water pump to start the irrigation mode, and the disinfected water is transported from the return liquid tank to the bed box in the seedling bed; wherein, the water in the return liquid tank is disinfected by the disinfection device to ensure the cleanliness of the irrigation water; If it is a drainage operation, the relay is used to drive the solenoid valve and the water pump to start the drainage mode, and the water is transported back from the bed box in the seedbed to the return liquid tank.

5. The tidal irrigation control system according to claim 1, characterized in that: The push rod bed lifting mechanism is a push rod mechanism, which is arranged below the unfixed end of the bottom of the bed box in the seedbed, and is used to lift the unfixed end of the bottom of the bed box to form a height difference between the two ends of the bottom of the bed box.

6. The tidal irrigation control system according to claim 1, characterized in that: Also included is a paddle-blade drainage mechanism; If it is a drainage operation, the paddle drainage mechanism is controlled to spirally discharge the impurities in the bed box, thereby improving the sewage discharge efficiency, avoiding soil or other impurities from clogging the inlet and outlet, and improving the drainage efficiency.

7. The tidal irrigation control system according to claim 6, characterized in that: The paddle drainage mechanism is arranged just above the inlet and outlet of the bed box, and comprises a propeller blade, a slide rail, a slider, a support rod and a folding bracket, wherein the center line of the slide rail is parallel to the horizontal line; the slider is buckled on the slide rail and slides horizontally along the slide rail; the propeller blade is fixed on the folding bracket; one end of the support rod is connected to the slider, and the other end is fixed to the folding bracket, and when the slider slides, one end of the support rod moves horizontally in the same direction as the slider, thereby changing the angle between the folding bracket and the slide rail; If it is a drainage operation, the motor of the slider is driven by a relay, and the slider moves. When the slider slides to the angle between the folding bracket and the slide rail is 90 o , a relay is used to drive the motor of the propeller blades to rotate the propeller blades in the downward state. During the rotation process, all the water is pushed to the inlet and outlet, and at the same time, a rotating spiral force is generated to discharge the impurities spirally, thereby improving the sewage discharge efficiency.

8. The tidal irrigation control system according to claims 1, 2, 4 to 7, characterized in that: The inlet and outlet are provided with a filter mesh, the diameter of which is slightly larger than the diameter of the hole at the top of the inlet and outlet to filter impurities in the water and ensure the cleanliness of the water during irrigation; a reinforcement structure composed of metal wire is provided in the inlet and outlet to prevent the filter mesh from being uneven.

9. A method for using a tidal irrigation control system, implemented based on the tidal irrigation control system according to any one of claims 1 to 8, characterized in that: The method comprises: Collect the water level value of the bed box in the seedbed; Determine whether it is irrigation operation or drainage operation according to the water level value and the irrigation parameters set by the user; If it is an irrigation operation, the water in the return liquid pool is transported to the bed box in the seedbed; if it is a drainage operation, the water in the bed box in the seedbed is transported back to the return liquid pool, and at the same time, the unfixed end of the bottom of the bed box in the seedbed is lifted to allow the water in the bed box to flow out completely and quickly; wherein, a recessed water inlet and outlet is provided at the fixed end of the bottom of the bed box.

10. The method of use according to claim 9, characterized in that: The method further comprises: if it is a drainage operation, the impurities in the bed box are spirally discharged to improve the drainage efficiency, avoid soil or other impurities blocking the inlet and outlet, and improve the drainage efficiency of the bed box.

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