Open channel measurement and control integrated agricultural gate

Abstract

The application relates to an open channel measurement and control integrated agricultural gate, and belongs to the technical field of agricultural irrigation equipment. The application solves the problem that a water gate valve lacks an intelligent compensation adjustment control system in the prior art. Specifically, the application comprises the following: a gate body, which is composed of a gate frame and a water stop plate assembly; the gate frame is arranged in a channel and is composed of a top beam, a side frame profile and a bottom frame profile; the water stop plate assembly has a water stop state of blocking the channel flow and a water delivery state of allowing the channel flow; a control cabinet, which is integrated with a remote control unit; two measurement devices, which are oppositely arranged on one sidewall upstream of the side frame profile and one sidewall downstream of the side frame profile; the measurement devices are integrated with ultrasonic flow measurement devices; the measurement devices are further integrated with silt depth measurement rods; and the control cabinet is configured to adjust the lifting height of the water stop plate assembly according to the data measured by the measurement devices, thereby ensuring the opening and closing functions of the water stop plate assembly and compensating for the lifting height of the water stop plate assembly.

Description

Technical Field

[0001] This application belongs to the field of agricultural irrigation equipment technology, and specifically relates to an integrated agricultural gate for monitoring and controlling open channels. Background Technology

[0002] In agricultural irrigation canals, gates are required to control water flow. Existing gate equipment in farm canals or irrigation ditches is outdated, often manually driven by chains or cranks. This method is time-consuming, labor-intensive, and increases maintenance costs. Furthermore, existing gates lack flow metering equipment; additional equipment is needed to measure irrigation flow, making the canal equipment cluttered. The lack of remote control means irrigation personnel must manually operate multiple gates on-site, increasing maintenance costs. Moreover, existing canals often lack intelligent control mechanisms. On the one hand, they lack methods to adaptively adjust gate height based on real-time flow; on the other hand, they lack methods to monitor silt depth and intelligently adjust gate height accordingly. Therefore, providing an integrated agricultural gate system that automatically controls gate opening and closing, integrates flow monitoring, allows remote control, and intelligently adjusts gate height based on flow velocity and silt depth has become a pressing technical problem for those skilled in the art. Summary of the Invention

[0003] Based on the above analysis, the present invention aims to provide an integrated open channel monitoring and control agricultural gate to solve the problems of low automation, high maintenance and use costs, and lack of remote control means in the prior art.

[0004] The objective of this invention is mainly achieved through the following technical solutions: The gate body consists of a gate frame and a waterstop plate assembly. The gate frame is set in the channel and is composed of a top beam, side frame profiles and a bottom frame profile. The waterstop plate assembly is vertically and vertically installed between the side frame profiles. The waterstop plate assembly has a water-stopping state that blocks the flow of the channel and a water-transporting state that allows the flow of the channel. The measuring device consists of two devices respectively positioned opposite each other on one side wall upstream and one side wall downstream of the side frame profile. The measuring device integrates an ultrasonic flow measuring device to measure the water flow rate through the gate frame when the waterstop assembly is in the water conveyance state. The measuring device also integrates a silt depth measuring rod to measure the silt thickness inside the water channel. The control cabinet is located on top of the gate frame to control the lifting and lowering of the waterstop assembly. The control cabinet integrates a remote control unit and is equipped with a solar panel and a battery. The control cabinet is configured to adjust the lifting height of the waterstop assembly based on data measured by the measuring device to ensure the opening and closing function of the waterstop assembly and to compensate for the lifting height of the gate.

[0005] Furthermore, the measuring device is equipped with an ultrasonic transducer mounting bracket, which has multiple mounting slots facing the channel direction, and each of the multiple mounting slots can be equipped with an ultrasonic transducer. When the waterstop assembly is in a water-carrying state that allows channel flow, the ultrasonic transducer installed on the measuring device emits ultrasonic waves, which are received by the ultrasonic transducer installed on the opposite side of the measuring device to calculate the flow velocity in the channel.

[0006] Furthermore, the measuring device has an installation part, and the silt depth measuring rod is detachably installed in the installation part; The measuring rod is kept vertical and its bottom is connected to the bottom of the canal as a ground electrode. Multiple electrode rings are equidistantly sleeved on the measuring rod along the axial direction. The multiple electrode rings and the ground electrode form a capacitance pair to measure the thickness of the silt inside the canal.

[0007] Furthermore, a reinforcing core rod is provided at the center of the silt measuring rod, and the silt measuring rod is set around the reinforcing core rod to prevent the silt measuring rod from deforming under the scouring of water flow, which would affect the measurement accuracy.

[0008] The inside of the silt measuring rod is filled with an insulating layer to prevent water seepage and short circuits.

[0009] Furthermore, the waterstop assembly includes a waterstop panel, a mounting bracket, a threaded rod nut, and a threaded rod; The waterstop panel is set between the side frame profiles, and the mounting bracket is fixedly connected to the top of the waterstop panel. The mounting bracket has mounting holes, and the threaded rod and nut are fixedly installed in the mounting holes. One end of the screw is rotatably mounted on the top beam and partially extends out of the top beam, while the other end is threaded and screwed to the screw nut, so that the water-stop panel can be raised and lowered relative to the screw by rotating the screw.

[0010] Furthermore, the waterstop assembly is also equipped with waterstop rubber and waterstop pressure plate. The waterstop pressure plate fixes the waterstop rubber to the side frame profile and the bottom frame profile with bolts to ensure the waterstop effect when the waterstop assembly is in the waterstop state.

[0011] Furthermore, the control cabinet is equipped with a drive motor and an encoder. The drive motor is fixed to the top beam, and the output hole of the drive motor is connected to the lead screw to drive the lead screw to rotate. A first gear is provided above the drive motor. The first gear is coaxially sleeved on the lead screw. The lead screw and the first gear are fixedly connected by a keyway. The encoder shaft is fitted with a second gear, and the first and second gears mesh to record and store the lifting and lowering status of the waterstop plate assembly.

[0012] Furthermore, a limiting sleeve is provided above the first gear, the limiting sleeve is sleeved on the lead screw, and the lead screw and the limiting sleeve are fixedly connected by a positioning pin to prevent the lead screw from sliding down due to the load of the waterstop plate assembly.

[0013] Furthermore, a manual transmission rod is fitted at the top of the lead screw to allow for manual raising and lowering of the waterstop assembly.

[0014] Furthermore, the side frame profile is equipped with limit components to prevent the waterstop panel from being lifted excessively; The limiting assembly includes a sensor embedded in the side frame profile and a mechanical limiting component mounted on the side frame profile.

[0015] Furthermore, the ultrasonic flow measurement device consists of a mounting bracket and multiple ultrasonic transducers. The mounting bracket is installed on both the side frame profile and the channel sidewall. The mounting bracket has multiple mounting slots facing the channel, and each of the multiple mounting slots can be equipped with an ultrasonic transducer. When the waterstop assembly is in a water-carrying state that allows channel flow, the ultrasonic transducer installed on the side frame profile emits ultrasonic waves, which are received by the ultrasonic transducer installed on the opposite side frame profile to calculate the flow velocity in the channel.

[0016] Furthermore, the ultrasonic transducer consists of a transducer probe, a transducer housing, and a transducer clamping plate; The transducer housing has a probe opening and a probe mounting slot. The transducer probe is mounted on the probe mounting slot, and the transducer clamping plate is used to seal the probe mounting slot.

[0017] Compared with the prior art, the present invention has at least the following beneficial technical effects: (1) A water channel water-stop gate that can be controlled and driven by a variety of methods including remote control is provided. The device uses an electric motor for mechanical operation, which makes operation more convenient than the traditional manual method and reduces the cost of manual maintenance. (2) An ultrasonic measuring device is integrated inside the sluice gate, which can monitor the water flow and velocity inside the water channel in real time, and can upload the data to the data platform in real time with the help of the internal remote control module.

[0018] (3) A smart control method is provided. By setting up a measuring device and integrating an ultrasonic velocity measuring device and a silt depth detection rod therein, real-time feedback of the flow velocity in the channel and the silt depth parameters at the gate can be obtained. On the one hand, the gate can be raised and lowered according to the difference between the actual flow velocity and the expected flow velocity, so that the actual flow velocity is closer to the expected flow velocity. On the other hand, the degree of gate raising and lowering can be adjusted based on the silt depth parameter. For example, when the silt is deep, the water stop plate can be raised higher to ensure that the flow cross-sectional area at the gate remains unchanged, thereby ensuring that the flow rate remains unchanged. The gate with this design is more suitable for long-term use and saves maintenance costs.

[0019] (4) Applying solar energy to the water channel gate can store excess electricity when the water stop plate assembly does not need to be lifted, thus achieving energy saving effect and avoiding the need for external power lines in farmland, which is in line with the application scenario of agricultural canals. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this specification or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of this specification. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This is a schematic diagram of the overall structure of the agricultural gate according to a preferred embodiment of the present invention.

[0022] Figure 2 This is a schematic diagram of the overall control cabinet according to a preferred embodiment of the present invention.

[0023] Figure 3 This is an exploded view of the internal components of the control cabinet according to a preferred embodiment of the present invention.

[0024] Figure 4 This is a schematic diagram of the gate body according to a preferred embodiment of the present invention.

[0025] Figure 5 This is a schematic diagram showing the connection relationship between the lead screw and the upper control system in a preferred embodiment of the present invention.

[0026] Figure 6 This is a schematic diagram of the overall measuring device according to a preferred embodiment of the present invention.

[0027] Figure 7 This is a schematic diagram of the explosion of the measuring device according to a preferred embodiment of the present invention.

[0028] Figure 8 This is a top view of the gate body installed inside the water channel in a preferred embodiment of the present invention, using an oblique ultrasonic velocity measurement method.

[0029] Figure 9 This is a schematic diagram of a single ultrasonic transducer structure according to a preferred embodiment of the present invention.

[0030] Figure 10 This is a schematic diagram of the silt depth measuring rod structure according to a preferred embodiment of the present invention.

[0031] Explanation of reference numerals in the attached figures: 1. Gate body; 2. Gate frame; 201. Top beam; 202. Side frame profile; 203. Bottom frame profile; 204. Limiting assembly; 205. Sliding groove; 206. Limiting groove; 207. Lifting hole; 208. Limiting sleeve; 3. Waterstop plate assembly; 301. Waterstop panel; 302. Mounting bracket; 303. Screw nut; 304. Screw; 305. Mounting hole; 306. Waterstop rubber; 307. Waterstop pressure plate; 4. Control cabinet; 401. Solar panel; 402. Battery; 403. Drive motor; 404. Encoder; 405. First gear; 406. Second gear; 407. Limiting sleeve; 408. Manual crank; 4 9. Display screen opening; 410. Display screen mounting plate; 411. Display screen; 412. Mechanical button; 413. Main control mounting plate; 414. Inspection door; 415. Solar panel mounting bracket; 416. Manual transmission rod; 5. Measuring device; 501. Ultrasonic transducer; 502. Mounting slot; 503. Transducer probe; 504. Transducer housing; 505. Transducer pressing plate; 506. Probe opening; 507. Probe mounting slot; 6. Silt detection rod; 601. Electrode ring; 602. Sealed chamber; 603. Signal adapter board; 604. Insulation layer; 605. Reinforcing core rod; 606. Counterweight blunt head; 607. Lead-out cable connector. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. It should be noted that, unless otherwise specified, the implementation methods and features in the implementation methods in this disclosure can be combined, separated, interchanged, and / or rearranged. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] In the accompanying drawings, the dimensions and relative dimensions of components may be exaggerated for clarity and / or descriptive purposes. When exemplary embodiments can be implemented differently, a specific process sequence may be performed in a different order than that described. For example, two consecutively described processes may be performed substantially simultaneously or in the reverse order of their description. Furthermore, the same reference numerals denote the same components.

[0034] When a component is referred to as being "on" or "above" another component, "connected to," or "joined to" another component, the component may be directly on, directly connected to, or directly joined to the other component, or there may be intermediate components. However, when a component is referred to as being "directly on" another component, "directly connected to," or "directly joined to" another component, there are no intermediate components. Therefore, the term "connection" can refer to a physical connection, an electrical connection, etc., and may or may not have intermediate components.

[0035] For descriptive purposes, this disclosure may use spatial relative terms such as “top,” “bottom,” “below,” “under,” “under,” “below,” “above,” “above,” “higher,” etc., which are relative to components, to describe the relationship between one component and another (other) component as shown in the accompanying drawings.

[0036] The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, unless the context clearly indicates otherwise, the singular forms “a” and “the” are intended to include the plural forms as well. Furthermore, when the terms “comprising” and / or “including” and variations thereof are used in this specification, it indicates the presence of the stated features, integrals, steps, operations, parts, components, and / or groups thereof, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, parts, components, and / or groups thereof. It should also be noted that, as used herein, the terms “substantially,” “about,” and other similar terms are used as approximate terms rather than as terms of degree, thus explaining the inherent biases in measurements, calculated values, and / or provided values ​​that would be recognized by one of ordinary skill in the art.

[0037] A preferred embodiment of the present invention discloses an integrated monitoring and control gate for open channels, specifically comprising: The gate body 1 is composed of a gate frame 2 and a waterstop plate assembly 3. The gate frame 2 is set in the channel and is composed of a top beam 201, side frame profiles 202 and bottom frame profiles 203. The waterstop plate assembly 3 is vertically and vertically arranged between the side frame profiles 202. The waterstop plate assembly 3 has a water-stopping state that blocks the flow of the channel and a water-transporting state that allows the flow of the channel. In this preferred embodiment, the gate frame 2 is composed of a top beam 201, a set of two identical side frame profiles 202, and a bottom frame profile 203. The side frame profiles 202 are fixed on both sides of the water channel. The distance between the two side frame profiles 202 is almost the same as the width of the water channel to ensure that the water flow in the water channel passes through the two identical side frame profiles 202, thereby ensuring the overall water-stopping performance of the water channel when the water-stopping plate assembly 3 is lowered. The bottom of the two side frame profiles 202 is fixedly connected to the bottom frame profile 203 of the gate frame 2 by a plurality of cylindrical head hexagonal bolts and other fasteners. The top of the two side frame profiles 202 is fixedly connected to the ground beam of the gate frame 2 by hexagonal countersunk bolts and other fasteners. The top beam 201 and the bottom frame profile 203 connect the two side frame profiles 202 together and together form the gate frame 2, which serves as the main structure of the agricultural gate disclosed in this invention.

[0038] It should be noted that the top beam 201, side frame profile 202 and bottom frame profile 203 mentioned above can use standard profiles available on the market, without the need for special additional mold opening, and have good adaptability.

[0039] Furthermore, in this embodiment, the main body of the waterstop assembly 3 is installed between a set of two side frame profiles 202. When the waterstop assembly 3 is in a water-stopping state that blocks the flow of the channel, the main body of the waterstop assembly 3 rests on the bottom frame profile 203 of the gate frame 2, and together with the side frame profiles 202, it stops the flow of water in the channel. When the waterstop assembly 3 is in a water-transporting state that allows the channel to flow, the main body of the waterstop assembly 3 rises up, allowing the water in the channel to flow between the main body of the waterstop assembly 3 and the side frame profiles 202 and the bottom frame profile 203.

[0040] In this preferred embodiment, the main body of the waterstop assembly 3 adopts a waterstop panel 301. The waterstop assembly 3 switches between the water supply state and the water stop state by raising and lowering the waterstop panel 301 relative to the gate frame 2. It is easy to understand that in some other embodiments, the waterstop assembly 3 can also adopt a waterstop plate housed in the side frame profile 202 and the side wall of the water channel. In this embodiment, the waterstop panel 301 is stretched relative to the bottom frame profile 203 and along the direction of the bottom frame profile 203 to achieve shielding between the side frame profiles 202, thereby realizing the switching between the water supply state and the water stop state. In other embodiments, the opening and closing of the sluice gate can be achieved by adaptively adjusting the form of the waterstop assembly 3. All of these should fall within the protection scope of this invention.

[0041] This embodiment also includes a control cabinet 4, which is located on the top of the gate frame 2 to control the lifting and lowering of the waterstop assembly 3. The control cabinet 4 integrates a remote control unit and is equipped with a solar panel 401 and a battery 402.

[0042] In a preferred embodiment of the present invention, multiple functional units are integrated into a control cabinet 4, achieving multi-functional integration. The control cabinet 4 houses various electronic components such as a control unit, a drive motor 403, an encoder 404, and a remote control unit. Only one control cabinet 4 is needed to meet multiple functional requirements, instead of installing multiple electromechanical cabinets, saving space in the water channel. Furthermore, it integrates a solar panel 401 and a battery 402, which can convert solar energy into electrical energy to power the operation of the electronic components inside the control cabinet 4. When the gate is not raised or lowered, the battery 402 inside the solar panel 401 only needs to power the low-energy electronic components such as the remote control unit and the control unit, and does not need to power the motor used to lift the waterstop assembly 3 or the encoder 404 used to monitor the lifting status of the waterstop assembly 3. The excess electricity generated by the solar panel 401 can be stored by the battery 402 and used to power the components inside the control cabinet 4 when the solar panel 401 is not in operation.

[0043] Specifically, in a preferred embodiment of the present invention, the control cabinet 4 includes a housing serving as the outer surface of the control cabinet 4, a solar panel 401 and a battery 402 assembly for power supply, a drive motor 403 for driving the waterstop plate assembly 3 of the gate body 1, an encoder 404 connected to the drive motor 403 for monitoring the status of the waterstop plate assembly 3, and a remote control unit for transmitting and receiving long-distance signals so that the user can remotely control the drive motor 403.

[0044] In this embodiment, the control cabinet 4 housing has a reserved opening 409 for the display screen 411 on the side wall for installing the display screen 411 mounting plate and the display screen 411 installed on the display screen 411 mounting plate. The display screen 411 is equipped with a touch unit, so that users can monitor the opening and closing status of the waterstop plate assembly 3 and the flow relationship of the gate frame in the channel in real time through the display screen 411, and can monitor and adjust the gate in real time through the touch screen.

[0045] Furthermore, the display screen 411 mounting plate is also equipped with a plurality of mechanical buttons 412, which are electrically connected to electronic components such as the drive motor 403 and encoder 404 inside the control cabinet 4. By setting up mechanical touch parts, in case the display screen 411 fails in extreme circumstances, the mechanical buttons 412 can be used to directly perform live mechanical operations.

[0046] In this embodiment, the control unit and the remote control unit are integrated on the main control mounting plate 413. The main control mounting plate 413 is fixed to the back of the display screen 411 mounting plate 410 by hexagonal bolts, and the main control mounting plate 413 and the display screen 411 mounting plate 410 are electrically connected.

[0047] In a preferred embodiment of the present invention, multiple control methods are provided for the control cabinet 4, such as remote control of the gate opening and closing status using a remote control unit, real-time monitoring and debugging of the gate by setting a touch screen 411 in the control cabinet 4, and mechanical operation of the internal equipment of the control cabinet 4 by mechanical buttons 412. Multiple operation methods are provided for the control and transmission components, and users can choose a suitable method to control the waterstop plate assembly 3 according to the site environment, which has good versatility.

[0048] Preferably, the control cabinet 4 has an inspection door 414. The inspection panel is detachably fixed to the housing by bolts. The inspection door 414 is used for the initial assembly of the internal components of the control cabinet 4, as well as the subsequent repair and maintenance of the internal components of the control cabinet 4.

[0049] In this embodiment, a solar panel 401 mounting bracket 302 is installed on the top of the control cabinet 4. The solar panel 401 is installed on the solar panel 401 mounting bracket 302. The solar panel 401 is electrically connected to the battery 402 inside the control cabinet 4 to collect solar energy and convert it into electrical energy for storage in the battery 402. The battery 402 is electrically connected to the control circuit of the display screen 411 mounting plate 410. The main control mounting plate 413 also integrates a solar controller to ensure that the entire device operates and charges at a suitable voltage.

[0050] This embodiment also includes: a measuring device 5, which is respectively disposed on one side wall upstream and one side wall downstream of the side frame profile 202. The measuring device 5 integrates an ultrasonic flow measuring device to calculate the water flow rate through the gate frame 2 when the water stop plate assembly 3 is in the water conveying state; the measuring device 5 also integrates a silt depth measuring rod to measure the silt thickness inside the water channel. The control cabinet 4 is configured to adjust the lifting height of the waterstop assembly 3 based on the data measured by the measuring device 5, thereby ensuring the opening and closing function of the waterstop assembly 3 and compensating for the lifting height of the waterstop assembly 3. In this embodiment, the measuring device 5 is a set of two, specifically including a first measuring device 5 and a second measuring device 5. The first measuring device 5 is installed on the side wall frame of the upstream section of the water channel and is attached to the side wall frame. The second measuring device 5 is symmetrically installed on the opposite side wall frame of the downstream section of the water channel with the geometric projection center of the gate frame 2 as the symmetrical point, so that the first measuring device 5 and the second measuring device 5 have an inclined angle, which is a prerequisite for ultrasonic velocity measurement. Since the first measuring device 5 and the second measuring device 5 have an inclined angle and water flows between them with the water flow direction fixed from upstream to downstream, even if the distance between the first measuring device 5 and the second measuring device 5 is the same, the time required for the ultrasonic flow measuring device in the first measuring device 5 to send a signal to the ultrasonic flow measuring device in the second measuring device 5 to receive the signal is different from the time required for the ultrasonic flow measuring device in the second measuring device 5 to send a signal to the ultrasonic flow measuring device in the first measuring device 5 to receive the signal. Based on the difference between the two, the fluid velocity in the water channel can be calculated in real time through a mathematical model.

[0051] In this embodiment, the internal circuit of the ultrasonic flow measuring device is connected to the internal circuit of the side frame profile 202, and is further electrically connected to the control circuit inside the control cabinet 4. When the waterstop assembly 3 is in the cut-off water-stopping state, the ultrasonic flow measuring device receives the electrical signal provided by the encoder 404 that the waterstop assembly 3 is in the water-stopping state. The ultrasonic flow measuring device stops running and stands by. When the waterstop assembly 3 is in the water-transporting state that allows water to flow through the channel, the ultrasonic flow measuring device receives the electrical signal provided by the encoder 404 that the waterstop assembly 3 is in the water-transporting state. As the waterstop panel 301 is raised, a set of two ultrasonic flow measuring devices located on opposite sides upstream and downstream of the side frame profile 202 start running and begin to emit ultrasonic waves to each other. These ultrasonic waves are received by the two ultrasonic flow measuring devices, thereby calculating the average flow velocity and flow rate of the water in the channel.

[0052] In this embodiment, the silt depth measuring rod is used to measure the internal thickness of the silt, thereby monitoring the silt accumulation at the gate. On the one hand, it prevents the silt depth from affecting the normal opening and closing of the gate. On the other hand, by monitoring the silt thickness, the gate's lifting height can be dynamically adjusted. By taking this adjustment and compensation measure, it is prevented that the silt accumulation will affect the flow cross-section when the gate is in the raised state, thus affecting the flow velocity in the channel. For example, when the silt depth is detected to be 2mm, the stop plate will be raised by 2mm accordingly. Furthermore, through the silt depth measuring rod, maintenance personnel can clearly know the current silt accumulation situation and determine whether cleaning is necessary, saving subsequent maintenance costs.

[0053] The specific composition and structure of the preferred embodiments of the present invention will be described below.

[0054] In a preferred embodiment of the present invention, the waterstop plate assembly 3 includes a waterstop panel 301, a mounting bracket 302, a lead screw 304, a nut 303, and a lead screw 304; The waterstop panel 301 is disposed between the side frame profiles 202, the mounting bracket 302 is fixedly connected to the top of the waterstop panel 301, the mounting bracket 302 has a mounting hole 305, and the screw 304 and nut 303 are fixedly installed in the mounting hole 305. One end of the lead screw 304 is rotatably mounted on the top beam 201 and partially extends out of the top beam 201, while the other end is threaded and screwed to the nut 303 of the lead screw 304, so that the water-stop panel 301 can be raised and lowered relative to the lead screw 304 by rotating the lead screw.

[0055] As described above, the waterstop plate assembly 3 is located inside the side frame profile 202. The inner wall of the side frame profile 202 is provided with a sliding groove to facilitate the sliding installation of the waterstop panel 301, thus providing the basic conditions for the waterstop panel 301 to move up and down relative to the gate frame. A set of two side frame profiles 202 are installed in the bottom frame mounting groove and the top frame mounting rod of the gate frame to form the gate frame body. The waterstop panel 301 can move up and down relative to the gate frame.

[0056] In this embodiment, the water-stop panel 301 is a square plate with the same width as the spacing between the side frame profiles 202. When the water-stop panel 301 is in the water-stopping state, the water-stop panel 301 falls along the side frame profiles 202 to the limiting groove 206 opened on the bottom frame profile 203. At this time, the height of the upper edge of the water-stop panel 301 is higher than the height of the water channel to ensure that the water flow inside the water channel is completely blocked.

[0057] In this embodiment, the mounting bracket 302 is made of L-shaped steel and is detachably mounted on the top of the center line of the waterstop panel 301 by bolts for mounting and connecting the screw rod 304 and the waterstop panel 301. The mounting bracket 302 is also mounted on both sides of the waterstop panel 301 that are in contact with the channel water flow. On one side, the L-shaped steel mounting bracket 302 is tightly attached to the waterstop panel 301, while on the other side, the mounting bracket 302 is not fully attached to the waterstop panel 301. The center of the mounting bracket 302 has a reserved space for accommodating the screw rod 304, i.e., a screw rod 304 hole, so as to realize the lifting of the waterstop panel 301 relative to the screw rod 304 along the axis of the screw rod 304. A screw rod 304 nut 303 is fixedly provided above the screw rod 304 hole on the end face of the mounting bracket 302 away from the waterstop panel 301 for connecting the screw rod 304 of the waterstop plate assembly 3.

[0058] In this embodiment, the lead screw 304 has a first end and a second end that are arranged opposite to each other. The first end is provided with a thread for screwing into the nut 303 of the lead screw 304, and the second end is provided with a keyway for fixing the first gear 405 and realizing coaxial rotation with the first gear 405, and an external hexagonal design for connecting a manual control lever. The threaded end of the lead screw 304 passes through the lead screw 304 nut 303 and the lead screw 304 hole below the lead screw 304 nut 303 and is screwed to the lead screw 304 nut 303. When the lead screw 304 rotates along its own central axis, the lead screw 304 nut 303 is fixedly installed on the mounting bracket 302 and the waterstop panel 301. The rotational freedom of the waterstop panel 301 is restricted by the sliding groove 205 of the side frame profile 202 and the limiting groove 206 of the bottom frame profile 203. Therefore, the lead screw nut 303 will not rotate with the lead screw 304. Instead, due to the screwed connection with the lead screw 304 thread, it drives the mounting bracket 302 and the waterstop panel 301 to move up and down relative to the lead screw 304 along the axis of the lead screw 304.

[0059] Furthermore, the top beam 201 of the gate frame 2 is provided with a lifting hole 207 for lifting the lead screw 304, and a drive motor 403 is installed inside the control cabinet 4 above the top beam 201 to drive the rotation of the lead screw 304. Specifically, the lead screw 304 is provided with a keyway and an external hexagonal design. The second end passes through and is rotatably fixed to the lifting hole 207 of the top beam 201. A limit sleeve 407208 is provided above the top plate of the top beam 201. The limit sleeve 407208 is fixedly connected to the part of the lead screw 304 that extends out of the top beam 201 and abuts against the top beam 201 to limit and fix the lead screw 304 and prevent the lead screw 304 from falling down from the lifting hole 207 due to the weight carried below.

[0060] In this embodiment, in order to ensure the reliable fixed connection between the limiting sleeve 407208 and the lead rod 304, both the limiting sleeve 407208 and the lead rod 304 are provided with positioning holes, and the positioning holes are connected by positioning pins to further ensure that the lead rod 304 will not slide down due to the load of the waterstop plate assembly 3.

[0061] In this embodiment, in order to prevent the lead screw 304 from passing through the lifting hole 207 upward during rotation, the lead screw 304 is fitted with a bearing seat that cannot move relative to it. The bearing seat abuts against the circumference of the lifting hole 207 on the end face of the top beam 201 facing the bottom beam. By setting the limiting sleeve 407208 and the bearing seat, it is ensured that the lead screw 304 can rotate around its own axis while maintaining its relative position with the gate frame 2.

[0062] In this embodiment, the lead screw 304 is driven to rotate by the drive motor 403 inside the control cabinet 4. The nut only makes axial linear displacement under the helical action of the lead screw 304, and the nut is restricted from rotating by the frame slide groove and the limiting groove 206. The stability and reliability of this mechanism are guaranteed, and the transmission accuracy is high. It can precisely control the lifting height of the water-stop panel 301, thereby controlling the water flow rate through the gate inside the water channel.

[0063] In a preferred embodiment of the present invention, the waterstop assembly 3 is further provided with a waterstop rubber 306 and a waterstop pressure plate 307. The waterstop pressure plate 307 fixes the waterstop rubber 306 to the side frame profile 202 by bolts to ensure the waterstop effect when the waterstop assembly 3 is in a waterstop state.

[0064] Specifically, the water-stop rubber 306 and the water-stop pressure plate 307 are positioned below the upper edge of the water-stop panel 301 when the water-stop plate assembly 3 is in a water-stopping state to ensure the sealing performance of the water-stopping state. In this embodiment, the water-stop rubber 306 is in the form of a rubber strip, which is filled on both the upper and lower sides of the side frame profile 202. It is mainly used to seal the gap between the water-stop panel 301 and the side frame profile 202 to ensure the water-stopping effect and prevent fluid from flowing out through the gap. Furthermore, the water-stop plate assembly 3 is also provided with a water-stop pressure plate 307. The shape and size parameters of the water-stop pressure plate 307 match those of the water-stop rubber 306. The water-stop rubber 306 is fixed to the side frame profile 202 by a plurality of cylindrical head hexagonal bolts, thereby ensuring the tightness of the connection between the two to complete the side water-stopping.

[0065] Preferably, a water-stop rubber 306 is provided in the limiting groove 206 of the bottom frame profile 203 to fill the gap between the lower edge of the water-stop panel 301 and the limiting groove 206 of the bottom frame profile 203, so as to complete the bottom edge water stop.

[0066] In this embodiment, the side frame profile 202 is provided with a limiting component 204 to prevent the waterstop panel 301 from being raised excessively; The limiting component 204 includes a sensor embedded in the side frame profile 202 and a mechanical limiting component installed on the side frame profile 202.

[0067] Specifically, in this embodiment, a Hall sensor is used. The side frame profile 202 has an embedded mounting slot 502 at the expected limit lifting height, which houses a Hall sensor bracket for mounting a Hall sensor of the appropriate specification. The Hall sensor is electrically connected to the internal electrical circuit of the side frame profile 202 and further connected to the internal control circuit of the control cabinet 4. The surface of the Hall sensor is waterproofed. In order to cooperate with the Hall sensor, the water-stop panel 301 needs to be embedded with a magnet. When the water-stop panel 301 carrying the magnet moves up and down and is raised to the expected limit height, the Hall sensor receives a magnetic flux change signal and sends the signal to the control cabinet 4 in electrical or remote form. After receiving the signal, the control unit changes the operating state of the drive motor 403, thereby achieving the limit of the water-stop panel 301.

[0068] Furthermore, the sliding groove 205 of the side frame profile 202 is also provided with a mechanical limiting component. In this embodiment, the mechanical limiting component is a limiting block filled in the sliding groove 205 of the side frame profile 202, which is used to mechanically limit the water stop panel 301 when the Hall sensor system fails. This further increases the reliability of the limiting system and prevents the water stop panel 301 from being lifted too much, causing actual engineering problems, such as damage to the bottom frame profile 203 when it falls due to excessive lifting, or causing the water flow inside the water channel to become out of control.

[0069] In addition to the two limiting methods mentioned above, the preferred embodiment of the present invention also provides an encoder 404 in the control cabinet 4, which can also be used to monitor the operating status of the waterstop assembly 3 and play the role of limiting protection, which will be described in detail below.

[0070] In this embodiment, the control cabinet 4 integrates multiple functions, realizing multi-functional integration. The control cabinet 4 houses various electronic components such as control unit, drive motor 403, encoder 404 and remote control unit, and integrates solar panel 401 and battery 402, which can realize a variety of different control functions.

[0071] In this embodiment, the control cabinet 4 is equipped with a drive motor 403 and an encoder 404. The drive motor 403 is fixed to the top beam 201, and the output hole of the drive motor 403 is connected to the lead screw 304 to drive the lead screw 304 to rotate. A first gear 405 is provided above the drive motor 403. The first gear 405 is coaxially sleeved on the lead screw 304. The lead screw 304 and the first gear 405 are fixedly connected by a keyway. The encoder 404 has a second gear 406 sleeved on its shaft. The first gear 405 and the second gear 406 mesh with each other to record and store the lifting and lowering state of the waterstop assembly 3.

[0072] Specifically, the drive motor 403 is directly mounted above the lifting hole 207 of the top beam 201. In this embodiment, the drive motor 403 is a right-angle geared motor, which has a compact structure, stable torque output, high transmission efficiency, and is easy to maintain. The output hole of the drive motor 403 is connected to the lifting hole 207, so that the output hole of the drive motor 403 is directly sleeved on the lead screw 304 for driving the lead screw 304 to rotate. As mentioned above, the keyway and the external hexagonal design of the second end of the lead screw 304 pass through and extend out of the lifting hole 207 and the output hole of the drive motor 403.

[0073] Specifically, the drive motor 403 drives the lead screw 304 to rotate. The rotation of the lead screw 304 simultaneously drives the nut 303 of the lead screw 304 assembly 3 to move along the direction of the lead screw 304. The nut 303 of the lead screw 304 moves upward along the thread on the first end of the lead screw 304 to achieve the lifting of the waterstop panel 301.

[0074] Furthermore, a first gear 405 is provided above the drive motor 403. The first gear 405 is sleeved on the lead screw 304 and is also provided with a keyway. The two are fixedly connected by the keyway to realize the coaxial rotation of the first gear 405 and the lead screw 304. An encoder 404 bracket is also provided on the top beam 201. The encoder 404 is mounted on the encoder 404 bracket. A second gear 406 is sleeved on the shaft of the encoder 404. The first gear 405 and the second gear 406 mesh. When the drive motor 403 drives the lead screw 304 to rotate, the first gear 405 rotates coaxially with the lead screw 304 because it is fixedly connected to the lead screw 304. The second gear 406 also rotates because it meshes with the first gear 405, and drives the encoder 404 to rotate. The encoder 404 obtains the position signal of the waterstop panel 301 according to the transmission and converts the obtained position signal into an electrical signal and sends it to the control unit to obtain the working state of the waterstop panel assembly 3.

[0075] As mentioned above, encoder 404 can also be used to monitor the operating status of waterstop plate assembly 3 and play a role in limit protection. It can work together with Hall sensor and mechanical limit component mentioned above to limit waterstop panel 301, thus playing a multi-protection role.

[0076] In this embodiment, a limiting sleeve 407208 is provided above the first gear 405. The limiting sleeve 407208 is sleeved on the lead screw 304, and the lead screw 304 and the limiting sleeve 407208 are fixedly connected by a positioning pin to prevent the lead screw 304 from sliding down due to the load of the waterstop plate assembly 3.

[0077] As described above, the limiting sleeve 407208 is disposed above the first gear 405 and is used to fix the part of the lead screw 304 extending out of the top beam 201 and abut against the top beam 201 to limit and fix the lead screw 304 and prevent the lead screw 304 from falling down from the lifting hole 207 due to the weight carried below.

[0078] In this embodiment, the control unit inside the control cabinet 4 integrates a 4G module as a remote control unit, which is used to upload monitoring data to the data terminal and remotely control the control unit inside the control cabinet 4.

[0079] In this embodiment, a manual transmission rod 416 is fitted at the top of the lead screw 304 to facilitate manual lifting and lowering of the waterstop plate assembly 3.

[0080] Specifically, the manual transmission rod 416 is designed to facilitate the application of force. The bottom of the end of the rod 304, which is used to connect the second end of the external hexagonal head, adopts an internal hexagonal structure and is fitted onto the second end of the external hexagonal head of the rod 304. This design is used for the manual mechanical operation of the water-stop panel 301 when the power is off.

[0081] Preferably, the top of the manual transmission rod 416 is configured in an external hexagonal shape for use with an external manual crank 408 for manual operation of the mechanical system during power outages.

[0082] In this embodiment, the ultrasonic flow measurement device consists of an ultrasonic transducer 501 mounting bracket 302 and a plurality of ultrasonic transducers 501. The ultrasonic transducer 501 mounting bracket 302 is simultaneously mounted on the side frame profile 202 and the channel sidewall. The ultrasonic transducer 501 mounting bracket 302 has a plurality of mounting slots 502 facing the channel direction, and each of the plurality of mounting slots 502 can be provided with an ultrasonic transducer 501. When the waterstop assembly 3 is in a water conveyance state that allows channel flow, the ultrasonic transducer 501 installed on the side frame profile 202 emits ultrasonic waves and is received by the ultrasonic transducer 501 installed on the other side frame profile 202 to calculate the flow velocity in the channel.

[0083] The ultrasonic transducer 501 consists of a transducer probe 503, a transducer housing 504, and a transducer pressure plate 505. The transducer housing 504 has a probe opening 506 and a probe mounting groove 507. The transducer probe 503 is mounted on the probe mounting groove 507, and the transducer pressure plate 505 is used to seal the probe mounting groove 507.

[0084] Specifically, in this example, the transducer plate 505 is fixed to the probe mounting slot 507 using a cross-groove pan head screw, and the wiring harness is arranged to form a complete ultrasonic transducer 501 that can be replaced and installed. In use, the ultrasonic time difference method is used to measure the water flow in the river channel. Specifically, two ultrasonic transducers 501 are used as a group to collect data by oblique beams, and the flow rate is calculated using a formula.

[0085] Preferably, multiple ultrasonic transducers 501 assemblies can be combined according to different water levels and installed on the mounting slots 502 of the ultrasonic transducer 501 mounting bracket 302 to adapt to different water level conditions.

[0086] In this embodiment, the ultrasonic transducer 501 mounting bracket 302 is bolted to the side frame profile 202. One end of the ultrasonic transducer 501 mounting bracket 302 is mounted on the side frame profile 202, and the other end is mounted on the side wall of the water channel. One is mounted on each of the upstream and downstream sides. When the waterstop assembly 3 is in the water-stopped state, the ultrasonic flow measuring device receives the electrical signal provided by the encoder 404 that the waterstop assembly 3 is in the water-stopped state. The ultrasonic flow measuring device stops running and goes into standby mode. When the waterstop assembly 3 is in the water-transporting state that allows water to flow through the channel, the ultrasonic flow measuring device receives the electrical signal provided by the encoder 404 that the waterstop assembly 3 is in the water-transporting state. As the waterstop panel 301 is raised, a set of two ultrasonic flow measuring devices located on opposite sides upstream and downstream of the side frame profile 202 start running and begin to emit ultrasonic waves to each other. These ultrasonic waves are received by the two ultrasonic flow measuring devices, thereby calculating the average flow velocity and flow rate of the water in the channel.

[0087] The ultrasonic measuring device 5 used in this invention can be well integrated with gates, is simple and convenient to install, and can also be used independently in relatively wide channels. Utilizing a multi-layer structure, by installing ultrasonic transducers 501 in mounting slots 502 of ultrasonic transducer 501 mounting brackets 302 at different depths, the laminar flow velocity at different water depths is measured, and multiple values ​​are taken. The average flow velocity is obtained mathematically using data modeling, and the flow rate is then obtained through multiple algorithms.

[0088] Specifically, in this embodiment, the time difference method is used for ultrasonic flow measurement. It utilizes the fact that there is a certain time difference when sound waves travel the same distance in the fluid with and against the current. This difference in propagation time is related to the flow velocity of the fluid being measured. Therefore, the flow velocity of the fluid can be calculated by mathematical modeling based on the measured time difference.

[0089] Specifically, as described above, this embodiment includes a set of two ultrasonic flow measuring devices respectively located on opposite sides upstream and downstream of the side frame profile 202. Both upstream and downstream ultrasonic flow measuring devices can receive and transmit ultrasonic signals. Furthermore, the liquid flow velocity affects the sound velocity emitted from the probes from upstream to downstream, causing a significant increase in sound velocity. The time-difference ultrasonic flow measuring box calculates the flow rate by measuring the time difference in the propagation speed of the ultrasonic signal between downstream and upstream flows, and then calculates the flow rate based on the cross-sectional area.

[0090] Specifically, the instantaneous flow rate at the cross section Q The calculation formula is as follows: in, T u , T d The time required for ultrasonic waves to be emitted from the upstream ultrasonic flow measurement device and received by the downstream ultrasonic flow measurement device; T d The time required for a downstream ultrasonic flow measurement device to emit ultrasonic waves and for an upstream ultrasonic flow measurement device to receive them; α The angle between the flow velocity and the ultrasonic path; L The length of the acoustic path. S The area is the channel area.

[0091] In a preferred embodiment of the invention, a silt depth sensor is also included. In this embodiment, the sensor is a silt depth measuring rod. The measuring rod is connected to the side frame profile 202. The measuring rod is kept vertical and its bottom is inserted into the bottom of the water channel. A plurality of electrode rings 601 are equidistantly sleeved on the measuring rod along the axial direction to measure the thickness of the silt inside the water channel.

[0092] In this embodiment, the silt depth is determined by measuring the dielectric constant of the medium at different water depths. Furthermore, the dielectric constant at different water depths can be calculated by measuring the capacitance value of the electrode rings 601 that are equidistantly connected to the measuring rod. The electrode rings 601 at different depths and the bottom of the measuring rod inserted at the bottom of the water channel, together with the ground electrode, form a capacitance pair. By utilizing the difference in dielectric constant between the water and the silt, the interface between the silt and the water, i.e., the mud-water interface, is transformed into a capacitance change of the capacitance pair formed by the electrode rings 601 at different depths. Then, the vertically distributed electrode array is used to locate the interface height, thereby calculating the silt thickness.

[0093] Specifically, the silt depth sensor adopts a rod form. The silt measuring rod has a first end and a second end that are set opposite to each other, located at the top and bottom ends along the axial direction of the silt depth detection rod 6. The silt measuring rod is sealed as a whole and is made of waterproof and corrosion-resistant materials to prevent interference with the internal electronic components of the measuring rod when it is inserted into the channel water. The material selection must take into account the pressure resistance, on the one hand to resist water pressure, and on the other hand, due to the fluidity of the water channel and the water surge after the gate is opened, the water flow impact resistance of the measuring rod shell needs to be considered. In this embodiment, a plurality of electrode rings 601 are equidistantly fixed to the outer surface of the silt depth detection rod 6 along the axial direction of the measuring rod. Each electrode ring 601 is composed of a first metal electrode ring 601 and a second metal electrode ring 601 stacked together, with their cross-sections fitting together. The first metal electrode ring 601 and the second metal electrode ring 601 are made of different types of conductive metal materials to provide the chemical conditions required to form a capacitance pair. The first metal ring and the second metal ring can contact the liquid to be measured in various environments and positions. The electrode surfaces of the first metal ring and the second metal ring facing the water channel are made of stainless steel for rust prevention. The electrode ring 601 has a wire hole facing the rod body. The wire hole is connected to the bottom of the rod body through the inside of the rod body and grounded through the bottom port of the rod body. Each electrode ring 601 has a separate wire and forms a capacitance pair with the bottom grounding electrode. By utilizing the difference in dielectric constant between water and silt, the mud-water interface at the junction of the water body and the silt layer is converted into a capacitance change. Then, the vertically distributed electrode array is used to locate the interface height, thereby calculating the silt thickness. Preferably, a central reinforcing core rod 605 is provided through the center of the silt measuring rod, and the other parts of the silt measuring rod are mainly arranged around the central reinforcing core rod 605, which serves as the central rod of the measuring rod and plays a role in resisting bending and reinforcing, preventing the silt measuring rod from deforming under the scouring of water flow, affecting the designed electrode ring 601 spacing, and affecting the measurement accuracy.

[0094] Furthermore, the inside of the silt measuring rod is filled with an insulating layer 604 to fill the internal gaps after the wiring is determined. The insulating layer 604 can be made of epoxy resin sealant to achieve the effects of preventing water seepage, fixing the wiring, and eliminating internal short circuits. The first end of the silt measuring rod is equipped with a sealed chamber 602, which has a cable lead-out connector 607 for electrical wiring between the inside of the silt measuring rod and other parts of the device, such as the control cabinet 4. A signal adapter board 603 is bolted inside the sealed cable lead-out chamber. It integrates a calculation program to convert the capacitance signal collected from the electrode ring 601 of the rod into a digital signal and transmit it to the control cabinet 4. An independent signal line is soldered to the signal adapter board 603 for transmitting the capacitance signal. The independent signal line can be made of fluoroplastic insulated tin-plated shielded copper wire for transmitting weak capacitance signals. It has the advantages of being resistant to underwater interference, water resistance, and aging resistance. A data line is led out from the bottom of the signal adapter board 603 to the control cabinet 4 through the external cable lead-out connector 607 to transmit the obtained data and for local viewing or remote data measurement.

[0095] The second end of the silt measuring rod is equipped with a counterweight blunt head 606, which serves two purposes: firstly, to increase its own weight and ensure that the sensor remains vertical and does not tilt; secondly, its bottom is grounded to serve as the second section of the electrode pair.

[0096] In this embodiment, the sludge measuring rod is disposed on the transducer mounting bracket 302 and installed at the reserved installation position of the transducer mounting bracket 302 for the sludge measuring rod. A nut is provided at the top of the sludge measuring rod, and a nut clamp is provided at the reserved installation position of the transducer mounting bracket 302 for the sludge measuring rod to fix the nut at the top of the sludge measuring rod.

[0097] In this embodiment, the capacitance method for measuring silt depth essentially utilizes the difference in dielectric constant between water and silt to convert the "water-mud interface" into a capacitance change, and then uses a vertically distributed array of electrodes to locate the interface height, thereby calculating the silt thickness.

[0098] In practical applications, after the measuring rod is vertically inserted into the mounting bracket 302, it passes through the air, water, silt and bottom mud in sequence from top to bottom. Each of the four layers has a dielectric constant that is different, so the calculated capacitance values ​​are also different. By capturing the capacitance change point, the position of the mud-water interface can be determined, and the silt thickness can be calculated in combination with the total length of the sensor.

[0099] The specific formula used is as follows: in, This is the capacitance value; The dielectric constant of the medium; d The distance between the electrodes is denoted as .

[0100] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this application. It should be understood that the above description is only a specific embodiment of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A type of integrated monitoring and control gate for open channels, characterized in that, include: The gate body (1) is composed of a gate frame (2) and a waterstop plate assembly (3). The gate frame (2) is set in the channel. The gate frame (2) is composed of a top beam (201), side frame profiles (202) and bottom frame profiles (203). The waterstop plate assembly (3) is vertically and vertically arranged between the side frame profiles (202). The waterstop plate assembly (3) has a water-stopping state that blocks the flow of the channel and a water-transporting state that allows the flow of the channel. Measuring device (5), two measuring devices (5) are respectively arranged opposite to each other on one side wall upstream and one side wall downstream of the side frame profile (202). The measuring device (5) integrates an ultrasonic flow measuring device to calculate the water flow through the gate frame (2) when the water stop plate assembly (3) is in the water conveying state. The measuring device (5) also integrates a silt depth measuring rod (6) to measure the silt thickness inside the water channel. A control cabinet (4) is installed on the gate frame (2) to control the lifting and lowering of the waterstop assembly (3). The control cabinet (4) is configured to adjust the lifting height of the waterstop assembly (3) according to the data measured by the measuring device (5) to confirm the opening and closing function of the waterstop assembly (3) and to compensate for the lifting height of the waterstop assembly (3).

2. The agricultural gate according to claim 1, characterized in that: The measuring device is provided with a plurality of mounting slots (503), and each of the plurality of mounting slots (503) can be equipped with the ultrasonic transducer (502). When the waterstop assembly (3) is in a water conveyance state that allows the channel to flow, the ultrasonic transducer (502) installed in the measuring device (202) emits ultrasonic waves and is received by the ultrasonic transducer (502) installed on the opposite side of the measuring device to calculate the flow velocity in the channel.

3. The agricultural gate according to claim 2, characterized in that: The measuring device is also provided with an installation part, and the silt depth measuring rod (6) is detachably installed in the installation part; The silt depth measuring rod (6) is kept vertical and its bottom is connected to the bottom of the water channel as a ground electrode. The silt depth measuring rod (6) is equidistantly sleeved with a plurality of electrode rings (601) along the axial direction. The plurality of electrode rings (601) form a plurality of capacitor pairs with the ground electrode to measure the thickness of silt inside the water channel.

4. The agricultural gate according to claim 3, characterized in that: The silt depth measuring rod (6) is provided with a reinforcing core rod (605) at its center, and the silt measuring rod (6) is set with the reinforcing core rod (605) as its center; The silt depth measuring rod (6) is filled with an insulating layer (604).

5. The agricultural gate according to claim 1, characterized in that: The waterstop plate assembly (3) includes a waterstop panel (301), a mounting bracket (302), a screw nut (303), and a screw (304). The waterstop panel is disposed between the side frame profiles (202), the mounting bracket (302) is fixedly connected to the top of the waterstop panel (301), the mounting bracket (302) has a mounting hole (305), and the screw nut (303) is fixedly installed in the mounting hole (305). One end of the lead screw (304) is rotatably mounted on the top beam (201) and partially extends out of the top beam (201), while the other end is threaded and screwed to the lead screw nut (303) so that the water-stop panel (301) can be raised and lowered relative to the lead screw (304) by rotating the lead screw (304).

6. The agricultural gate according to claim 5, characterized in that: The waterstop assembly (3) is also provided with waterstop rubber (306) and waterstop pressure plate (307). The waterstop pressure plate (307) fixes the waterstop rubber (306) to the side frame profile (202) to ensure the waterstop effect when the waterstop assembly (3) is in the waterstop state.

7. The agricultural gate according to claim 6, characterized in that: The control cabinet (4) is equipped with a drive motor (403) and an encoder (404). The drive motor (403) is fixed to the top beam (201). The output hole of the drive motor (403) is connected to the lead screw (304) to drive the lead screw (304) to rotate. A first gear (405) is provided above the drive motor (403), and the first gear (405) is coaxially sleeved on the lead screw (304). The lead screw (304) and the first gear (405) are fixedly connected by a keyway. The encoder (404) has a second gear (406) sleeved on its shaft. The first gear (405) and the second gear (406) mesh with each other to record and store the lifting and lowering state of the waterstop assembly (3).

8. The agricultural gate according to claim 7, characterized in that: A limiting sleeve (407) is provided above the first gear (405). The limiting sleeve (407) is sleeved on the lead screw (304), and the lead screw (304) and the limiting sleeve (407) are fixedly connected by a positioning pin to prevent the lead screw (304) from sliding down due to the load of the waterstop assembly (3).

9. The agricultural gate according to claim 8, characterized in that: The top of the lead screw (304) is fitted with a manual transmission rod (408) for manual lifting and lowering of the waterstop plate assembly (3).

10. The agricultural gate according to claim 5, characterized in that: The side frame profile (202) is provided with a limit component (204) to prevent the waterstop panel (301) from being raised excessively; The limiting component includes a sensor embedded in the side frame profile and a mechanical limiting member installed on the side frame profile.

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