Intelligent monitoring device for riverway water level

Abstract

The invention relates to the technical field of water level monitoring devices, and discloses a riverway water level intelligent monitoring device which comprises a support, a radar liquid level meter, a rotary drum and a telescopic plate. The radar liquid level meter is arranged on the supporting plate, a horn antenna is installed on the side, away from the radar liquid level meter, of the supporting plate, and the horn antenna is electrically connected with the radar liquid level meter. The rotating cylinder sleeve is arranged on the horn antenna and is rotationally connected with the horn antenna; the telescopic plates are installed on the outer side wall of the rotating cylinder, limiting shafts are fixed to the sides, away from the rotating cylinder, of the telescopic plates, path grooves are formed in the sides, facing the horn antenna, of the supporting plates, and one ends of the limiting shafts are inserted into the path grooves and can slide along the path grooves. The intelligent monitoring device for the water level of the river channel can solve the problem that an existing radar liquid level meter is prone to being affected by strong wind, so that the monitoring device is difficult to accurately measure the liquid level of the river channel.

Description

Technical Field

[0001] This invention relates to the field of water level monitoring device technology, and specifically to an intelligent river water level monitoring device. Background Technology

[0002] A radar level gauge is a non-contact level measuring instrument based on the principle of electromagnetic wave reflection. It transmits high-frequency electromagnetic waves (such as microwaves or frequency-modulated continuous waves) to the surface of the measured medium via an antenna and receives the reflected signals. The liquid level is calculated using the round-trip time difference of the waves. Its core advantage lies in its immunity to environmental factors such as medium temperature, pressure, viscosity, and dust, making it suitable for complex working conditions.

[0003] Radar level gauges are commonly used for water level detection in rivers and lakes. A Chinese patent, publication number CN118392271A, entitled "A Monitoring Device and Method for Water Level in Plateau Rivers," provides a monitoring device that includes a radar level gauge and an anti-interference component. This anti-interference component can reduce the impact of aerosols on the radar level gauge. However, the environment in which radar level gauges are installed above rivers is generally harsh; they are affected not only by aerosols but also frequently by strong winds.

[0004] When the wind is strong, the wind blowing on the horn-shaped housing of the radar level gauge will inevitably affect the housing, which may affect the measurement accuracy of the radar level gauge. This is especially true when the radar level gauge is in a windy environment for a long time, where the impact of strong winds on the radar level gauge is even greater. Summary of the Invention

[0005] This invention provides an intelligent river water level monitoring device to solve the problem that existing radar level gauges are easily affected by strong winds, making it difficult for monitoring devices to accurately measure river water levels.

[0006] The intelligent river water level monitoring device of the present invention adopts the following technical solution: A smart river water level monitoring device includes a bracket, a radar level gauge, a rotating drum, and a telescopic plate. A support plate is mounted on the bracket. The radar level gauge is mounted on the support plate, and a horn antenna is installed on the side of the support plate away from the radar level gauge. The horn antenna is electrically connected to the radar level gauge. The rotating drum is sleeved on the horn antenna and rotatably connected to it. The telescopic plate is mounted on the outer wall of the rotating drum, and a limiting shaft is fixed on the side of the telescopic plate away from the rotating drum. A path groove is formed on the side of the support plate facing the horn antenna, and one end of the limiting shaft is inserted into the path groove and can slide along the path groove.

[0007] Furthermore, the telescopic plate is provided in multiple pieces, and the multiple telescopic plates are evenly distributed on the outer cylinder surface of the rotating cylinder around the central axis of the horn antenna.

[0008] Furthermore, the path groove is an irregular annular groove, and the width of the path groove is greater than or equal to the outer diameter of the end into which the limiting shaft is inserted.

[0009] Furthermore, the rotating cylinder includes multiple conical plates, the two ends of which abut each other to form the rotating cylinder sleeved on the outside of the horn antenna. The conical plates are rotatably mounted on the horn antenna by a limiting slip assembly. The limited slip assembly includes a limiting ring groove and a limiting pin. The limiting ring groove is formed on the outer cylindrical surface of the horn antenna and is coaxially arranged with the horn antenna. The limiting pin is mounted on the conical plate, and one end of the limiting pin away from the conical plate is inserted into the limiting ring groove and slidably disposed within the limiting ring groove.

[0010] Furthermore, a mounting base is provided at the end of the telescopic plate away from the support plate, and a cleaning component is provided on the mounting base to clean the inner wall of the horn antenna; The cleaning assembly includes a scraper, a negative pressure suction tube, and an elastic component. The scraper and the negative pressure suction tube are both movably mounted on the mounting base via the elastic component. An angle groove is formed on the inner cylinder surface of the horn antenna. The scraper is adapted to the angle groove. The bottom end of the scraper is connected to the negative pressure suction tube. A dust removal hole is formed on the tube surface corresponding to the angle groove surface of the scraper.

[0011] Furthermore, the elastic component is disposed on the mounting base. The elastic component includes a fixed shaft, a fixed plate, and a spring. The fixed shaft is fixed on the mounting base, the fixed plate is fixed on the fixed shaft, the spring is sleeved on the fixed shaft and its two ends are respectively pressed against the fixed plate and the mounting base, and the scraper tube and the negative pressure suction tube are both mounted on the fixed shaft.

[0012] Furthermore, a calibration mechanism is provided between the support plate and the rotating cylinder. The calibration mechanism includes a drive gear ring, a transmission assembly, a receiving shaft, a receiving plate, and a calibration plate. The drive gear ring is fixed to the bottom end of the telescopic plate, and the receiving plate is fixed below the support plate via the receiving shaft. The calibration plate is rotatably mounted on the receiving plate. The drive gear ring drives the calibration plate to rotate on the receiving plate via the transmission assembly. A notch is provided on the receiving plate, located below the horn antenna and coaxially arranged with the horn antenna.

[0013] Furthermore, the transmission assembly includes a first transmission wheel, a second transmission wheel, a third transmission wheel, and a reducer. A fixed plate is mounted on the receiving shaft, and the reducer is mounted on the bottom of the fixed plate. The input end of the reducer passes through the fixed plate and is equipped with the first transmission wheel. The output end of the reducer is equipped with the second transmission wheel. The third transmission wheel is rotatably connected to the receiving shaft and fixed on the calibration plate. The drive gear meshes with the first transmission wheel, and the second transmission wheel meshes with the third transmission wheel.

[0014] Furthermore, the calibration plate includes a connecting plate and a reflector plate. The connecting plate is rotatably mounted on the receiving shaft. The third transmission wheel is sleeved on the receiving shaft and fixedly connected to the connecting plate. The receiving plate has a rotation channel communicating with the notch. The rotation channel is coaxially arranged with the receiving plate and the receiving shaft. The reflector plate is fixed at the end of the connecting plate away from the receiving shaft. The reflector plate is inserted into the rotation channel. When the third transmission wheel rotates, it can drive the reflector plate to continuously rotate in the rotation channel.

[0015] Furthermore, the bracket is equipped with a photovoltaic panel and a control cabinet. The photovoltaic panel is used to provide power to the radar level gauge, and the control cabinet is used to control the operation of the radar level gauge.

[0016] The beneficial effects of this invention are: The present invention provides a smart river water level monitoring device. When the present invention is used to monitor the river water level, the signal transceiver of the radar level gauge can emit electromagnetic waves toward the river surface. The electromagnetic waves are reflected by the river surface and can be received by the horn antenna, thereby allowing the water level to be measured by the radar level gauge. The rotating drum and telescopic plate mounted on the horn antenna can, when strong winds blow, cause the telescopic plate to rotate around the horn antenna. The rotation of the drum and telescopic plate can convert some of the energy of the wind blowing the horn antenna into the mechanical energy of the drum and telescopic plate rotating around the horn antenna. This can reduce the force directly transmitted to the horn antenna by the wind, thereby reducing the impact of strong winds on the radar level gauge and making the radar level gauge measure the liquid level more accurately.

[0017] Furthermore, in windy conditions, the telescopic plate can drive the rotating drum to rotate. The rotation of the drum can cause the scraper to disengage from the corner slot inside the horn antenna through the elastic component, and under the action of the elastic component, it abuts against the inner wall of the horn antenna. As the drum continues to rotate, the scraper can scrape the dust on the inner wall of the horn antenna. At the same time, the airflow speed in the constricted section of the negative pressure suction pipe at the bottom of the scraper is faster when the drum rotates, which can draw the scraper into a negative pressure state. When the scraper rotates inside the horn antenna under negative pressure, it can suck the dust scraped off or the dust and debris floating inside the horn antenna into the scraper, and finally discharge it from the end of the negative pressure suction pipe away from its rotation direction. This can reduce the impact of dust on radar reflection signals, reduce or avoid diffuse reflection of radar signals, and make the signal received by the horn antenna more stable, reducing the occurrence of inaccurate monitoring of river water levels.

[0018] Furthermore, when the present invention is in a windy environment, the drive gear ring can rotate synchronously with the rotating drum. The drive gear ring can drive the calibration plate to rotate through the transmission component. When the calibration plate rotates past the notch on the receiving plate, the radar level gauge can perform accuracy calibration. Moreover, as the wind continues to blow the telescopic plate, the accuracy of the radar level gauge can be continuously calibrated, ultimately making the measured river water level more accurate. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of an intelligent river water level monitoring device provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the radar level gauge in an intelligent river water level monitoring device provided in an embodiment of the present invention; Figure 3 This is a schematic cross-sectional view of the radar level gauge in an intelligent river water level monitoring device provided in an embodiment of the present invention. Figure 4 This is a schematic diagram of the exploded structure of the radar level gauge in an intelligent river water level monitoring device provided in an embodiment of the present invention; Figure 5 for Figure 3 A magnified structural diagram of part A in the middle; Figure 6 This is a schematic diagram of the cleaning component in an intelligent river water level monitoring device provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the path channel in an intelligent river water level monitoring device provided in an embodiment of the present invention.

[0021] In the diagram: 100, bracket; 101, upright; 102, crossbar; 200, radar level gauge; 300, rotating drum; 400, telescopic plate; 500, horn antenna; 110, support plate; 410, outer plate; 420, inner plate; 411, limiting shaft; 111, path groove; 310, conical plate; 320, limited slip assembly; 321, limiting ring groove; 322, limiting pin; 421, mounting base; 600, cleaning assembly; 610, scraper; 620, negative pressure suction pipe; 630, elastic assembly; 700. Calibration mechanism; 710. Drive gear ring; 720. Transmission assembly; 730. Receiving shaft; 740. Receiving plate; 750. Calibration plate; 741. Notch; 742. T-shaped groove; 721. First transmission wheel; 722. Second transmission wheel; 723. Third transmission wheel; 724. Reducer; 751. Connecting plate; 752. Reflector; 103. Photovoltaic panel; 104. Control box. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] like Figures 1 to 4 As shown in the figure, an intelligent river water level monitoring device provided by an embodiment of the present invention includes a support 100, a radar level gauge 200, a rotating drum 300, and a telescopic plate 400. The support 100 is set on the ground near the river channel and can be composed of a vertical pole 101 and a horizontal bar 102. The vertical pole 101 stands upright on the ground, and the horizontal bar 102 is fixed to the vertical pole 101, with its length direction perpendicular to the length direction of the vertical pole 101. The horizontal bar 102 is positioned on the vertical pole 101 away from the ground, with one end of the horizontal bar 102 extending into the river or lake. A reinforcing diagonal brace can be provided between the horizontal bar 102 and the vertical pole 101 to stabilize the horizontal bar 102, thereby improving the stability of the support 100.

[0026] A support plate 110 is provided on the bracket 100. The support plate 110 is fixed to the end of the crossbar 102 away from the upright 101 and is perpendicular to the length direction of the upright 101. The radar level gauge 200 is mounted on the support plate 110, and its signal transceiver terminal passes through the support plate 110 and faces the ground. A horn antenna 500 is mounted on the side of the support plate 110 away from the radar level gauge 200. The horn antenna 500 is positioned directly below the radar level gauge 200 and is coaxially aligned with the signal transceiver terminal of the radar level gauge 200. The horn antenna 500 is electrically connected to the radar level gauge 200.

[0027] The rotating cylinder 300 is mounted on the horn antenna 500 and rotatably connected to it. A telescopic plate 400 is installed on the outer wall of the rotating cylinder 300. The telescopic plate 400 includes an inner plate 420 and an outer plate 410. One end of the inner plate 420 is fixedly connected to the outer wall of the rotating cylinder 300, and the other end of the inner plate 420 is inserted into the inner hole of the outer plate 410. A limiting shaft 411 is fixed to the side of the outer plate 410 away from the inner plate 420, and the axial direction of the limiting shaft 411 is perpendicular to the surface of the support plate 110. A path groove 111 (e.g., ...) is provided on the side of the support plate 110 facing the horn antenna 500. Figure 7As shown, one end of the limiting shaft 411 is inserted into the path groove 111 and can slide along the path groove 111. Specifically, the path groove 111 can be an irregular annular groove, and the end of the limiting shaft 411 facing the path groove 111 is a rolling end. The rolling end can be a roller or ball coaxially arranged with the limiting shaft 411. The outer diameter of the roller or ball is less than or equal to the groove width of the path groove 111, thereby ensuring that the rolling end of the limiting shaft 411 slides along the path groove 111.

[0028] The outer plate 410 can be a U-shaped plate, and the inner plate 420 is inserted into the groove of the outer plate 410. The outer plate 410 has sliding holes, the length of which is parallel to the support plate 110. Bolts that match the sliding holes are fixed to the inner plate 420. When the inner plate 420 is inserted into the groove of the outer plate 410, the bolts on the inner plate 420 are designed to be able to insert into the corresponding sliding holes and slide along the length of the holes, thereby enabling the telescopic plate 400 to extend and retract.

[0029] It should be noted that, in this invention, on a plane parallel to the support plate 110, the shortest distance between the path groove 111 and the central axis of the horn antenna 500 is greater than the maximum distance between the inner plate 420 of the telescopic plate 400 and the central axis of the horn antenna 500, and the longest distance between the path groove 111 and the central axis of the horn antenna 500 is less than the maximum distance between the outer plate 410 of the telescopic plate 400 and the central axis of the horn antenna 500.

[0030] The operating principle of this invention is as follows: When the present invention is used to monitor the water level of a river, the signal transceiver of the radar level gauge 200 can emit electromagnetic waves toward the river surface. The electromagnetic waves are reflected by the river surface and can be received by the horn antenna 500, thereby allowing the water level to be measured by the radar level gauge 200. When encountering strong winds, the wind blows the radar level gauge 200. The horn antenna 500 at the bottom of the radar level gauge 200 increases the direct contact area between the radar level gauge 200 and the strong wind, thereby increasing the possibility of the radar level gauge 200 becoming loose or shaking, and thus increasing the inaccuracy of the radar level gauge 200. However, the rotating drum 300 and the telescopic plate 400 set on the horn antenna 500 can, when strong winds blow, cause the telescopic plate 400 to be affected by the strong winds, causing the rotating drum 300 to rotate around the horn antenna 500. The rotation of the rotating drum 300 and the telescopic plate 400 can convert some of the energy of the strong wind blowing the horn antenna 500 into the mechanical energy of the rotating drum 300 and the telescopic plate 400 rotating around the horn antenna 500, thereby reducing the force directly transmitted to the horn antenna 500 by the strong wind, thus reducing the impact of the strong wind on the radar level gauge 200, and making the radar level gauge 200 measure the liquid level more accurately.

[0031] On the other hand, the path groove 111 can restrict the movement path of the limiting shaft 411. When the path groove 111 is an irregular annular groove, the contact area between the telescopic plate 400 and the wind is variable when the telescopic plate 400 rotates due to strong wind. Therefore, the force on the roller from the telescopic plate 400 is also variable. This can prevent the telescopic plate 400 from eventually reaching a force balance due to being in the wind for a long time. When the roller is in a strong wind, the telescopic plate 400 can continuously drive the roller to rotate due to different forces, thereby continuously converting wind energy into mechanical energy. This makes the water level height measured by the present invention more accurate when monitoring river water levels.

[0032] Furthermore, the rotating cylinder 300 includes multiple conical plates 310. The two ends of the multiple conical plates 310 abut each other to form a rotating cylinder 300 sleeved on the outside of the horn antenna 500. The conical plates 310 are rotatably mounted on the horn antenna 500 through the limiting slip assembly 320.

[0033] Specifically, the conical plate 310 is more accurately a part of the frustum side plate. The telescopic plate 400 is fixed at the generatrix of the conical plate 310, and the extension line of the cross-sectional diameter of the telescopic plate 400 coincides with that of the horn antenna 500. Therefore, when the telescopic plate 400 rotates with the roller, no matter where the limiting shaft 411 at its end moves in the corresponding path groove 111, the central axis of the horn antenna 500 is always in the same plane as the telescopic plate 400.

[0034] In this embodiment, the limited-slip assembly 320 includes a limiting annular groove 321 and a limiting pin 322. The limiting annular groove 321 is formed on the outer cylindrical surface of the horn antenna 500, near the top of the horn antenna 500, and is coaxially arranged with the horn antenna 500. The limiting pin 322 is mounted on the conical plate 310, with one end of the limiting pin 322 away from the conical plate 310 inserted into the limiting annular groove 321 and slidably disposed within the limiting annular groove 321.

[0035] Specifically, the cross-section of the limiting ring groove 321 can be T-shaped, and the end of the limiting pin 322 away from the tapered plate 310 is a T-shaped end that is adapted to the limiting ring groove 321. The T-shaped end of the limiting pin 322 is inserted into the limiting ring groove 321 and can slide along the length direction of the limiting ring groove 321.

[0036] Multiple telescopic plates 400 are provided on the outer wall of the rotating cylinder 300. Each telescopic plate 400 corresponds to a multiple conical plate 310. The multiple telescopic plates 400 are fixed at the generatrix of the multiple conical plates 310. All the multiple telescopic plates 400 face the central axis of the horn antenna 500. The extension lines of the multiple telescopic plates 400 facing the horn antenna 500 can converge at the central axis of the horn antenna 500.

[0037] The arrangement of multiple telescopic plates 400 allows the invention to be simultaneously subjected to the force of strong winds when it is in a windy state, thereby making it easier to drive the roller to rotate and more easily convert wind energy into mechanical energy.

[0038] The multiple telescopic plates 400 can also extend or shorten under the limiting action of the path groove 111 as the conical plate 310 rotates, which makes the force on the telescopic plates 400 uneven, which is more conducive to maintaining the rotation of the conical plate 310, and can continuously convert wind energy into mechanical energy, thereby realizing the unloading of wind power, which is conducive to maintaining the stability of the radar level gauge 200.

[0039] In some embodiments, such as Figures 2 to 6 As shown, the telescopic plate 400 is provided with a mounting base 421 at the end away from the support plate 110, and the mounting base 421 is provided with a cleaning component 600 that can clean the inner wall of the horn antenna 500.

[0040] To avoid adverse effects of the cleaning component 600 on the rotation of the conical plate 310 or the rotating cylinder 300 on the horn antenna 500, the mounting base 421 can be installed on only one of the multiple conical plates 310. The mounting base 421 can be fixed to the bottom end of the corresponding telescopic plate 400, the inner plate 420 of which can extend vertically out of the outer plate 410 and be fixedly connected to the mounting base 421.

[0041] Mounting base 421 is located below horn antenna 500 and conical plate 310, with one side of mounting base 421 facing the central axis of horn antenna 500, and cleaning assembly 600 is located on the side of mounting base 421 facing horn antenna 500.

[0042] The cleaning assembly 600 includes a scraper tube 610, a negative pressure suction tube 620, and an elastic component 630. The negative pressure suction tube 620 is fixedly connected to the bottom end of the scraper tube 610. The negative pressure suction tube 620 is a venturi tube, and the bottom end of the scraper tube 610 is connected to the constricted section of the negative pressure suction tube 620. A corner groove with its length direction parallel to the generatrix of the conical plate 310 is formed on the inner cylinder surface of the horn antenna 500. The corner groove is an obtuse-angled groove. The scraper tube 610 is a hollow tube adapted to the corner groove, allowing it to be inserted into the corner groove. When the scraper tube 610 is in the corner groove, the side of the scraper tube 610 away from the bottom of the corner groove is smoothly aligned with the inner cylinder wall of the horn antenna 500. Multiple cleaning holes are formed on the two sides of the scraper tube 610 corresponding to the two sides of the corner groove, and these cleaning holes are evenly distributed along the length direction of the scraper tube 610 on the corresponding tube surfaces.

[0043] Both the scraping tube 610 and the negative pressure suction tube 620 are movably mounted on the mounting base 421 via an elastic component 630, which is mounted on the mounting base 421. The elastic component 630 includes a fixed shaft, a fixed plate, and a spring. The fixed shaft is fixed to the mounting base 421, and its axis is perpendicular to the central axis of the horn antenna 500. The fixed plate is fixed to the fixed shaft, with a gap between the fixed plate and the mounting base 421. The spring is sleeved on the fixed shaft, and its two ends are fixedly connected to the fixed plate and the mounting base 421, respectively. The scraping tube 610 passes through the fixed shaft and is fixedly connected to it, while the negative pressure suction tube 620 is located below the fixed shaft.

[0044] In the initial state, the scraper tube 610 is located in the corresponding corner slot, with its side away from the bottom of the corner slot smoothly aligned with the inner wall of the horn antenna 500. At this time, the spring is in its original state or slightly compressed. When the invention is in a windy environment, the wind blowing on the telescopic plate 400 can drive the conical plate 310 (rotating cylinder 300) to rotate on the horn antenna 500, and the scraper tube 610 rotates synchronously with the telescopic plate 400; When the scraper 610 rotates, the side of the scraper 610 can abut against the groove wall of the corner groove and gradually detach from the corner groove under the action of the telescopic plate 400. During the process of the scraper 610 detaching from the corner groove, the spring will be stretched. After the scraper tube 610 disengages from the corner slot, under the elastic force of the spring, the scraper tube 610 will press against the inner wall of the horn antenna 500, and under the drive of the telescopic plate 400, it will move in a circular motion around the central axis of the horn antenna 500 along the inner wall of the horn antenna 500. When the scraper tube 610 rotates inside the horn antenna 500, the scraper tube 610 is always in contact with the inner wall of the horn antenna 500, thus scraping the inner wall of the horn antenna 500. When the scraper tube 610 scrapes the inner wall of the horn antenna 500, it can scrape off the dust or other debris accumulated on the inner wall of the horn antenna 500. When the scraper tube 610 rotates inside the horn antenna 500, the negative pressure suction tube 620 connected to the scraper tube 610 can rotate synchronously. When the negative pressure suction tube 620 rotates, the airflow speed in its constricted section is faster, which can draw the scraper tube 610 into a negative pressure state. When the scraper tube 610 in the negative pressure state rotates inside the horn antenna 500, it can suck the dust scraped off or the dust and debris floating inside the horn antenna 500 into the scraper tube 610, and finally discharge it from the end of the negative pressure suction tube 620 away from its rotation direction.

[0045] Driven by the telescopic plate 400, the scraper 610 rotates inside the horn antenna 500. When the scraper 610 rotates, it can scrape the dust accumulated on the inner wall of the horn antenna 500, thereby reducing the influence of dust on the radar reflection signal, reducing or avoiding diffuse reflection of the radar signal, and making the signal received by the horn antenna 500 more stable, thus reducing the occurrence of inaccurate monitoring of river water level.

[0046] In some embodiments, a calibration mechanism 700 is provided between the support plate 110 and the rotating cylinder 300. The calibration mechanism 700 is disposed between the support plate 110 and the rotating cylinder 300. The calibration mechanism 700 includes a drive gear ring 710, a transmission assembly 720, a receiving shaft 730, a receiving plate 740, and a calibration plate 750. The drive gear ring 710 is fixed to the bottom end of the telescopic plate 400, the receiving plate 740 is fixed below the support plate 110 via the receiving shaft 730, the calibration plate 750 is rotatably disposed on the receiving plate 740, and the drive gear ring 710 drives the calibration plate 750 to rotate on the receiving plate 740 via the transmission assembly 720. A notch 741 is provided on the receiving plate 740, the notch 741 is located below the horn antenna 500, and is coaxially disposed with the horn antenna 500.

[0047] Specifically, the drive gear ring 710 is fixed to the bottom end of the inner rod of the telescopic plate 400. The mounting base 421 in the above embodiment is located inside the drive gear ring 710. The drive gear ring 710 is coaxially arranged with the horn antenna 500 and the rotating cylinder 300. The receiving shaft 730 is fixed to the side of the support plate 110 facing the horn antenna 500. The receiving shaft 730 is perpendicular to the support plate 110 and parallel to the length direction of the upright rod 101. A T-shaped rotating groove 742 is provided on the receiving plate 740. The end of the receiving shaft 730 away from the support plate 110 is fixedly connected to the center of the bottom of the T-shaped rotating groove 742. The receiving plate 740 is located below the horn antenna 500 and has a notch 741 on it corresponding to the bottom port of the horn antenna 500. The notch 741 is coaxially arranged with the horn antenna 500. The calibration plate 750 is rotatably mounted in the T-shaped rotating groove 742 via the transmission assembly 720. The rotation axis of the calibration plate 750 is coaxially arranged with the receiving shaft 730. When the calibration plate 750 rotates in the T-shaped rotating groove 742, the calibration plate 750 can pass through the notch 741.

[0048] When the present invention is in a windy environment, the river surface may experience waves due to the strong wind, and the radar level gauge 200 may also be affected by the strong wind and shake, which may increase the measurement accuracy error of the radar level gauge 200. The calibration plate 750 can rotate with the drive gear ring 710 under the action of the transmission component 720, and can continuously rotate within the T-shaped rotating groove 742.

[0049] When the calibration plate 750 rotates past the notch 741 on the receiving plate 740, since the length of the receiving shaft 730 is fixed, the distance between the signal transceiver of the radar level gauge 200 and the calibration plate 750 can be considered a fixed value. Based on the transmission speed of electromagnetic waves, the accuracy of the radar level gauge 200 can be calibrated. Because strong winds are continuous, the accuracy of the radar level gauge 200 needs to be calibrated frequently to ultimately obtain a more accurate river level reading.

[0050] Furthermore, the transmission assembly 720 includes a first transmission wheel 721, a second transmission wheel 722, a third transmission wheel 723, and a reducer 724. A fixed plate is mounted on the receiving shaft 730, and the reducer 724 is mounted on the bottom of the fixed plate. The input end of the reducer 724 passes through the fixed plate and is equipped with the first transmission wheel 721. The output end of the reducer 724 is equipped with the second transmission wheel 722. The third transmission wheel 723 is rotatably connected to the receiving shaft 730 and fixed on the calibration plate 750. The drive gear ring 710 meshes with the first transmission wheel 721, and the second transmission wheel 722 meshes with the third transmission wheel 723.

[0051] Specifically, the fixed plate is an oval plate parallel to the receiving plate 740 and the support plate 110. The reducer 724 is mounted on the fixed plate. The first transmission wheel 721 and the second transmission wheel 722 are respectively mounted on the input and output ends of the reducer 724. The third transmission wheel 723 is rotatably mounted on the receiving shaft 730 via a bearing. The calibration plate 750 is mounted on the bottom of the third transmission wheel 723. The first transmission wheel 721, the second transmission wheel 722, and the third transmission wheel 723 can all be gears, and the reducer 724 can be a harmonic reducer 724. The transmission ratio between the input and output ends of the reducer 724 is a constant value, so the interval at which the calibration plate 750 passes through the notch 741 can be determined according to the wind speed or the rotation speed of the telescopic plate 400.

[0052] Furthermore, the calibration plate 750 includes a connecting plate 751 and a reflector plate 752. The connecting plate 751 is rotatably mounted on the receiving shaft 730, and the third transmission wheel 723 is rotatably sleeved on the receiving shaft 730 and fixedly connected to the connecting plate 751. The receiving plate 740 has a rotation channel communicating with the notch 741. This rotation channel is the T-shaped groove 742 in the above embodiment, and the rotation channel is coaxially arranged with the receiving plate 740 and the receiving shaft 730. The reflector plate 752 is fixed to the end of the connecting plate 751 away from the receiving shaft 730. The reflector plate 752 is inserted into the rotation channel. When the third transmission wheel 723 rotates, it can drive the reflector plate 752 to periodically pass through the notch 741 on the receiving plate 740 and rotate continuously around the receiving shaft 730 within the rotation channel.

[0053] As the reflector 752 rotates with the connecting plate 751, it completes a calibration of the radar level gauge 200 each time it passes through the notch 741. Frequent and periodic calibration of the radar level gauge 200 enables it to measure the river level even in windy conditions.

[0054] In some embodiments, such as Figure 1As shown, the support frame 100 is equipped with a power supply unit and a control cabinet. The power supply unit includes a photovoltaic panel 103, which can be installed on the top of the pole 101. A photovoltaic inverter for use with the photovoltaic panel 103 is also installed on the pole 101. The electrical energy generated by the photovoltaic panel 103 can be used to power the radar level gauge 200 through the photovoltaic inverter. The control box 104 is installed on the pole 101. The control box 104 contains a switch for controlling the operation of the radar level gauge 200 or a control mechanism that can control the operation of the radar level gauge 200. The operator can control the radar level gauge 200 to monitor the river level through the control box 104.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A smart monitoring device for river water levels, characterized in that, include: A bracket (100) is provided with a support plate (110); A radar level gauge (200) is mounted on a support plate (110). A horn antenna (500) is installed on the side of the support plate (110) away from the radar level gauge (200). The horn antenna (500) is electrically connected to the radar level gauge (200). Rotary cylinder (300), which is sleeved on the horn antenna (500) and rotatably connected to the horn antenna (500); A telescopic plate (400) is installed on the outer wall of the rotating cylinder (300). A limiting shaft (411) is fixed on the side of the telescopic plate (400) away from the rotating cylinder (300). A path groove (111) is opened on the side of the support plate (110) facing the horn antenna (500). One end of the limiting shaft (411) is inserted into the path groove (111) and can slide along the path groove (111).

2. The intelligent river water level monitoring device according to claim 1, characterized in that: The telescopic plate (400) is provided in multiple pieces, and the multiple telescopic plates (400) are evenly distributed on the outer cylinder surface of the rotating cylinder (300) around the central axis of the horn antenna (500).

3. The intelligent river water level monitoring device according to claim 1, characterized in that: The path groove (111) is an irregular annular groove, and the width of the path groove (111) is greater than or equal to the outer diameter of the end into which the limiting shaft (411) is inserted.

4. The intelligent river water level monitoring device according to claim 1, characterized in that: The rotating cylinder (300) includes multiple conical plates (310). The two ends of the multiple conical plates (310) abut each other to form the rotating cylinder (300) sleeved on the outside of the horn antenna (500). The conical plates (310) are rotatably mounted on the horn antenna (500) through a limiting slip assembly (320). The limited slip assembly (320) includes a limiting ring groove (321) and a limiting pin (322). The limiting ring groove (321) is formed on the outer cylindrical surface of the horn antenna (500). The limiting ring groove (321) is coaxially arranged with the horn antenna (500). The limiting pin (322) is installed on the conical plate (310). One end of the limiting pin (322) away from the conical plate (310) is inserted into the limiting ring groove (321) and slidably disposed in the limiting ring groove (321).

5. The intelligent river water level monitoring device according to claim 1, characterized in that: The telescopic plate (400) is provided with a mounting base (421) at one end away from the support plate (110), and the mounting base (421) is provided with a cleaning component (600) capable of cleaning the inner wall of the horn antenna (500). The cleaning assembly (600) includes a scraper (610), a negative pressure suction tube (620), and an elastic component (630). The scraper (610) and the negative pressure suction tube (620) are both movably mounted on the mounting base (421) via the elastic component (630). An angle groove is provided on the inner cylinder surface of the horn antenna (500). The scraper (610) is adapted to the angle groove. The bottom end of the scraper (610) is connected to the negative pressure suction tube (620). A dust removal hole is provided on the tube surface of the scraper (610) corresponding to the groove surface of the angle groove.

6. The intelligent river water level monitoring device according to claim 5, characterized in that: The elastic component (630) is disposed on the mounting base (421). The elastic component (630) includes a fixed shaft, a fixed plate and a spring. The fixed shaft is fixed on the mounting base (421), the fixed plate is fixed on the fixed shaft, and the spring is sleeved on the fixed shaft with its two ends abutting against the fixed plate and the mounting base (421) respectively. The scraper tube (610) and the negative pressure suction tube (620) are both mounted on the fixed shaft.

7. The intelligent river water level monitoring device according to claim 1, characterized in that: A calibration mechanism (700) is provided between the support plate (110) and the rotating cylinder (300). The calibration mechanism (700) is located between the support plate (110) and the rotating cylinder (300). 700) includes a drive gear ring (710), a transmission assembly (720), a receiving shaft (730), a receiving plate (740), and a calibration plate (750). The drive gear ring (710) is fixed at the bottom end of the telescopic plate (400). The receiving plate (740) is fixed below the support plate (110) via the receiving shaft (730). The calibration plate (750) is rotatably mounted on the receiving plate (740). The drive gear ring (710) drives the calibration plate (750) to rotate on the receiving plate (740) via the transmission assembly (720). A notch (741) is provided on the receiving plate (740). The notch (741) is located below the horn antenna (500) and is coaxially arranged with the horn antenna (500).

8. The intelligent river water level monitoring device according to claim 7, characterized in that: The transmission assembly (720) includes a first transmission wheel (721), a second transmission wheel (722), a third transmission wheel (723), and a reducer (724). A fixed plate is mounted on the receiving shaft (730). The reducer (724) is mounted on the bottom of the fixed plate. The input end of the reducer (724) passes through the fixed plate and is mounted with the first transmission wheel (721). The output end of the reducer (724) is mounted with the second transmission wheel (722). The third transmission wheel (723) is rotatably connected to the receiving shaft (730) and fixed to the calibration plate (750). The drive gear ring (710) meshes with the first transmission wheel (721), and the second transmission wheel (722) meshes with the third transmission wheel (723).

9. The intelligent river water level monitoring device according to claim 8, characterized in that: The calibration plate (750) includes a connecting plate (751) and a reflector plate (752). The connecting plate (751) is rotatably mounted on the receiving shaft (730). The third transmission wheel (723) is sleeved on the receiving shaft (730) and fixedly connected to the connecting plate (751). The receiving plate (740) has a rotation channel communicating with the notch (741). The rotation channel is coaxially arranged with the receiving plate (740) and the receiving shaft (730). The reflector plate (752) is fixed at the end of the connecting plate (751) away from the receiving shaft (730). The reflector plate (752) is inserted into the rotation channel. When the third transmission wheel (723) rotates, it can drive the reflector plate (752) to continuously rotate in the rotation channel.

10. The intelligent river water level monitoring device according to claim 1, characterized in that: The bracket (100) is equipped with a photovoltaic panel (103) and a control cabinet. The photovoltaic panel (103) is used to provide power to the radar level gauge (200), and the control cabinet (104) is used to control the operation of the radar level gauge (200).

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