Rainfall real-time monitoring station for flood prevention based on internet of things

Abstract

This invention discloses an IoT-based real-time rainfall monitoring station for flood control, relating to the field of rain gauge technology. It includes an outer casing with a water collection trough fixedly connected to its inner side. The tops of the outer casing and the water collection trough are interconnected, forming a funnel shape. A slag discharge port is provided on one side of the outer casing, extending to the upper end of the water collection trough. Equally spaced slag discharge strips are slidably connected to the inner side of the upper end of the water collection trough. This IoT-based real-time rainfall monitoring station for flood control utilizes two sets of spaced slag discharge strips that completely cover the top of the water collection trough. The equidistantly spaced water inlets at the top effectively intercept debris larger than the aperture, such as leaves, twigs, and silt. The slag discharge strips have a right-angled trapezoidal cross-section with the hypotenuse facing the slag discharge port. During sliding, the hypotenuse generates a horizontal force on the debris at the top, directed towards the slag discharge port. Through the transmission of a water tank, float, extension rod, and synchronous connecting rod, the two sets of slag discharge strips move synchronously in opposite directions, requiring no manual intervention or additional power supply.

Description

Technical Field

[0001] This invention relates to the field of rain gauge technology, specifically to a real-time rain monitoring station for flood control based on the Internet of Things. Background Technology

[0002] A real-time rainfall monitoring station is a device or site used to continuously monitor and automatically record rainfall. It typically consists of a rainfall sensor, a data acquisition unit, a communication module, and a power supply system. It can acquire information such as rainfall intensity, cumulative rainfall, and the start and end times of rainfall in real time, and transmit the data to a monitoring platform via a network.

[0003] For example, Chinese Patent CN218446048U discloses a tipping bucket rain gauge with a cleaning device. The rain gauge includes a rain detection unit with a cylinder. A dust cover is provided on the upper part of the cylinder to form an openable and closable structure with the cylinder, so that at least a part of the dust cover can be opened or closed by pushing, pulling or rotating. A water collector for collecting rainwater is arranged inside the cylinder near the dust cover, and a water storage tank for storing rainwater is provided at the bottom of the cylinder. The water storage tank is connected to a storage tank containing detergent. A spray assembly and / or an air supply assembly can be arranged on the side of the dust cover near the water collector and / or the inner wall of the cylinder. The water storage tank is connected to the spray assembly through a pipe. The spray assembly cleans the rain gauge comprehensively by physical rinsing and chemical soaking, so that the rain gauge can realize three functions: dust prevention, rinsing and drying. It can also ensure the normal function and measurement accuracy of the rain gauge in dry or low temperature weather.

[0004] For example, Chinese patent CN209014747U discloses a maintenance-free rain gauge station based on NB-IoT, including a tipping bucket rain gauge, an IoT rain gauge monitoring device box, a lightning protection device, a stainless steel bracket, and a fixed base. The tipping bucket rain gauge contains a rain sensor, and the IoT rain gauge monitoring device box contains an IoT rain gauge monitoring device. The IoT rain gauge monitoring device includes an antenna, an NB-IoT module, an MCU, a real-time clock, and a disposable battery. The antenna is electrically connected to the MCU through the NB-IoT module, and the real-time clock and disposable battery are also electrically connected to the MCU. The rain sensor is electrically connected to the MCU. Based on NB-IoT narrowband IoT technology, combined with a low-power MCU, a disposable battery, and an IP67 rainproof housing, it can achieve a 10-year maintenance-free practical application after a single installation, solving the problems of poor power supply stability, high failure rate, and difficult maintenance of existing rain gauge stations.

[0005] Most of the existing technologies mentioned above improve the overall structure. However, existing tipping bucket rain gauges are prone to having their inlets clogged by debris in flood control applications. Traditional rain gauges often use simple filter structures, which require frequent manual cleaning. Summary of the Invention

[0006] The purpose of this invention is to provide a real-time rainfall monitoring station for flood control based on the Internet of Things, so as to solve the problem that the inlet of the existing tipping bucket rainfall monitoring station is easily blocked by debris in flood control applications, and that traditional rain gauges mostly use simple filter structures, which require frequent manual cleaning.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a real-time rainfall monitoring station for flood control based on the Internet of Things, comprising an outer casing, wherein a water collection trough is fixedly connected to the inner side of the outer casing, and the tops of the outer casing and the water collection trough are connected to each other to form a funnel shape; The outer casing has a slag discharge port on one side, which extends to the upper end of the water collection tank. The inner side of the upper end of the water collection tank is slidably connected with equidistantly distributed slag discharge strips. There are two sets of slag discharge strips, and each set of slag discharge strips is spaced apart. Both ends of the slag discharge strips are slidably connected to the inner wall of the water collection tank. One end of each set of slag discharge strips is connected to each other and fixedly connected to a push rod. The push rod extends vertically downward and is fixedly connected to a float. The connection between the push rod and the float is set as a hollow structure. The slag discharge strips completely cover the top of the water collection tank, and the top of the slag discharge strips has equidistantly distributed water inlet holes. The bottom of the slag discharge strips is set as an open structure, and the cross-section of the slag discharge strips is a right-angled trapezoid.

[0008] Furthermore, the bottom of the outer casing is provided with a tipping bucket metering assembly, which includes a tipping bucket body. A mounting top is fixedly connected to the top center of the tipping bucket body. The mounting top is provided with a sealing groove, and both ends of the sealing groove are provided with guide holes facing the inside of the tipping bucket body.

[0009] Furthermore, the top of the mounting top has an arc-shaped structure, and the center of the arc-shaped structure of the mounting top coincides with the rotation axis of the tipping bucket body.

[0010] Furthermore, the bottom of the water collection tank is funnel-shaped, and a connecting pipe is fixedly connected to the bottom of the water collection tank. The bottom of the connecting pipe is provided with a flange, and the bottom of the connecting pipe is engaged in the sealing groove through the flange.

[0011] Furthermore, two symmetrically distributed support rods are fixedly connected to the bottom of the outer casing, and a support plate is fixedly connected between the two support rods. Limiting protrusions are fixedly connected to both ends of the support plate.

[0012] Furthermore, counters are fixedly connected to both sides of the top of the support plate. The counters are equipped with IoT-based communication components. A mounting base is fixedly connected to the middle of the support plate. A rotating base is rotatably connected to the inner side of the mounting base. The rotating base is fixedly connected to the middle of the bottom of the tipping bucket body. The two ends of the rotating base correspond to the sensing areas of the two counters respectively. Counterweights are fixedly connected to the middle and both ends of the tipping bucket body. The counterweights located at both ends of the rotating base and the limiting protrusions form a rotation limiting structure for the tipping bucket body.

[0013] Furthermore, water tanks are fixedly connected to both sides of the bottom of the outer box, the float is slidably connected to the inside of the water tank, and a siphon tube extending to the outside of the outer box is fixedly connected to the bottom of the water tank. The highest point of the siphon tube is level with the highest point of the float's movement.

[0014] Furthermore, extension rods are fixedly connected to both sides of the push rod in the middle, and two symmetrically distributed synchronous connecting rods are rotatably connected to the inner side of the outer box.

[0015] Furthermore, the end of the extension rod is slidably connected to the groove of the synchronous connecting rod, and the extension rod and the synchronous connecting rod form a structure for two push rods to move synchronously and in opposite directions.

[0016] Furthermore, two flow-damping plates are fixedly connected inside the water collection tank, and the two flow-damping plates form a V-shaped structure, with the lower end of the flow-damping plate separated from the inner wall of the water collection tank.

[0017] Compared with the prior art, the beneficial effects of the present invention are: This IoT-based real-time rainfall monitoring station for flood control uses two sets of spaced-apart slag discharge bars that completely cover the top of the water collection tank. The equidistant water inlets at the top of the bars can effectively intercept debris such as leaves, dead branches, and silt that are larger than the hole diameter. The slag discharge bars have a right-angled trapezoidal cross section with the hypotenuse facing the slag discharge port. During the sliding process, the hypotenuse will generate a horizontal component force on the debris on top, which will be directed towards the slag discharge port. Through the transmission of the water tank, float, extension rod and synchronous connecting rod, the two sets of slag discharge bars can move synchronously in opposite directions without manual intervention or additional power supply.

[0018] The mounting top of the tipping bucket body adopts an arc-shaped structure with its center coinciding with the tipping bucket's rotation axis. Combined with the snap-fit ​​structure between the bottom flange of the connecting pipe and the sealing groove, the connection part maintains its sealing performance throughout the entire tipping bucket rotation process, effectively preventing rainwater leakage and significantly improving metering accuracy.

[0019] The V-shaped flow buffer inside the water collection tank can reduce the falling speed and impact force of rainwater, reduce the impact of high-speed water flow on the tipping bucket metering components, and further improve the stability and accuracy of metering. Attached Figure Description

[0020] Figure 1This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the cross-sectional structure of the outer casing of the present invention; Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a schematic diagram of the tipping bucket body structure of the present invention; Figure 5 This is a schematic diagram of the counter structure of the present invention; Figure 6 This is a schematic diagram of the cross-sectional structure of the tipping bucket body of the present invention; Figure 7 This is a schematic diagram of the slag discharge bar structure of the present invention; Figure 8 This is a schematic diagram of the push rod structure of the present invention; Figure 9 This is a schematic diagram of the cross-sectional structure of the water collection tank of the present invention.

[0021] In the diagram: 1. Outer casing; 2. Water collection tank; 3. Slag discharge port; 4. Tipping bucket body; 5. Mounting top; 6. Sealing groove; 7. Guide hole; 8. Connecting pipe; 9. Support rod; 10. Support plate; 11. Limiting protrusion; 12. Counter; 13. Mounting base; 14. Rotating base; 15. Counterweight; 16. Slag discharge bar; 17. Water inlet; 18. Push rod; 19. Extension rod; 20. Synchronous connecting rod; 21. Float; 22. Water storage tank; 23. Siphon pipe; 24. Flow buffer plate. 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] Example 1: Please refer to Figures 1 to 6 The present invention provides the following technical solution: A real-time rainfall monitoring station for flood control based on the Internet of Things includes an outer casing 1, with a water collection trough 2 fixedly connected to the inner side of the outer casing 1. The tops of the outer casing 1 and the water collection trough 2 are interconnected to form a funnel shape. A slag discharge port 3 is provided on one side of the outer casing 1, extending to the upper end of the water collection trough 2. Slag discharge bars 16 are slidably connected to the inner side of the upper end of the water collection trough 2. There are two sets of slag discharge bars 16, and each set of slag discharge bars 16 is spaced apart. Both ends of the slag discharge bars 16 are slidably connected to the inner wall of the water collection trough 2. One end of each set of slag discharge bars 16 is interconnected and fixedly connected to a push rod 18. The push rod 18 extends vertically downward and is fixedly connected to a float 21. The connection between the push rod 18 and the float 21 is set as a hollow structure. The slag discharge bars 16 completely cover the top of the water collection trough 2. The top of the slag discharge bars 16 is provided with equidistant water inlet holes 17. The bottom of the slag discharge bars 16 is set as an open structure, and the cross-section of the slag discharge bars 16 is a right trapezoid.

[0024] The bottom of the outer casing 1 is equipped with a tipping metering assembly, which includes a tipping body 4. A mounting top 5 is fixedly connected to the top center of the tipping body 4. The top of the mounting top 5 is provided with a sealing groove 6, and both ends of the sealing groove 6 are provided with guide holes 7 facing the inside of the tipping body 4. The top of the mounting top 5 is an arc-shaped structure, and the center of the arc-shaped structure of the mounting top 5 coincides with the rotation axis of the tipping body 4.

[0025] The bottom of the water collection tank 2 is funnel-shaped, and a connecting pipe 8 is fixedly connected to the bottom of the water collection tank 2. The bottom of the connecting pipe 8 is provided with a flange, and the bottom of the connecting pipe 8 is snapped into the sealing groove 6 through the flange. Two symmetrically distributed support rods 9 are fixedly connected to the bottom of the outer box 1. A support plate 10 is fixedly connected between the two support rods 9. Limiting protrusions 11 are fixedly connected to both ends of the support plate 10.

[0026] Counters 12 are fixedly connected to both sides of the top of the support plate 10. The counters 12 are equipped with IoT-based communication components. A mounting base 13 is fixedly connected to the middle of the support plate 10. A rotating base 14 is rotatably connected to the inner side of the mounting base 13. The rotating base 14 is fixedly connected to the middle of the bottom of the tipping bucket body 4. The two ends of the rotating base 14 correspond to the sensing areas of the two counters 12 respectively. Counterweights 15 are fixedly connected to the middle and both ends of the tipping bucket body 4. The counterweights 15 located at both ends of the rotating base 14 and the limiting protrusions 11 form a rotation limiting structure for the tipping bucket body 4.

[0027] Rainwater enters the monitoring station through the funnel-shaped opening formed by the top of the outer casing 1 and the water collection tank 2. It first falls on the top surface of the slag discharge bar 16, which completely covers the top of the water collection tank 2. The rainwater enters the internal space of the slag discharge bar 16 through the water inlet holes 17 that are evenly distributed on the top of the slag discharge bar 16, and then flows out from the open structure at the bottom of the slag discharge bar 16 into the water collection tank 2 below. Meanwhile, debris such as leaves, dead branches, and mud that are larger than the diameter of the water inlet holes 17 are intercepted on the top surface of the slag discharge bar 16.

[0028] Rainwater entering the water collection trough 2 flows downward along the funnel-shaped inner wall at the bottom of the water collection trough 2 and into the connecting pipe 8 fixedly connected to the bottom of the water collection trough 2. The flange at the bottom of the connecting pipe 8 is engaged in the sealing groove 6 where the top 5 is installed on the top of the tipping bucket body 4. Rainwater flows into one of the chambers of the tipping bucket body 4 through the guide holes 7 set at both ends inside the sealing groove 6.

[0029] As rainwater continuously flows into the chamber, the weight on this side of the tipping bucket body 4 gradually increases. When the weight on this side exceeds the sum of the weight of the other side chamber and the balance weight of the counterweight 15, the tipping bucket body 4 will deflect around the rotation axis of the rotating seat 14 fixedly connected to the middle of its bottom. The mounting top 5 rotates synchronously with the tipping bucket body 4. Since the top of the mounting top 5 is an arc-shaped structure and its center coincides with the rotation axis of the tipping bucket body 4, the flange at the bottom of the connecting pipe 8 always remains engaged with the sealing groove 6 during the rotation process, maintaining the sealing of the connection and preventing rainwater leakage.

[0030] When the tipping bucket body 4 deflects to a certain angle, the chamber that receives rainwater will pour all the rainwater inside out of the bottom of the outer box 1. At the same time, the empty chamber on the other side rotates to the direct flow hole 7 and begins to receive the subsequent rainwater. During the deflection of the tipping bucket body 4, one end of the rotating seat 14 will pass through the sensing area of ​​the counter 12 fixedly connected to the top of the corresponding side support plate 10. The counter 12 will record one tipping action. By accumulating the number of tipping actions, the corresponding rainfall can be calculated, and the data will be transmitted to the cloud through its built-in communication structure. When the tipping bucket body 4 continues to deflect, the counterweight 15 located at the corresponding end of the rotating seat 14 will contact the limiting protrusion 11 fixedly connected to the end of the support plate 10. The limiting protrusion 11 will block the counterweight 15 from continuing to move, thereby limiting the maximum deflection angle of the tipping bucket body 4 and preventing the tipping bucket body 4 from rotating excessively and affecting subsequent measurement.

[0031] When a certain amount of debris accumulates on the top of the slag discharge bar 16, affecting the passage of rainwater, the staff can manually push one of the push rods 18 downwards. The push rod 18 will drive a set of slag discharge bars 16 fixedly connected to it to slide vertically downwards along the inner side of the upper end of the water collection tank 2. Since the cross-section of the slag discharge bar 16 is a right trapezoid with its hypotenuse facing the slag discharge port 3, the hypotenuse will generate a horizontal component force on the debris on the top of the slag discharge port 3 during the downward sliding process of the slag discharge bar 16, pushing the debris towards the slag discharge port 3. Finally, the debris is discharged outside the outer box 1 through the slag discharge port 3 extending to the upper end of the water collection tank 2, completing the slag discharge and cleaning operation.

[0032] Example 2: Based on Example 1, please refer to... Figures 7 to 9 The following structure was also disclosed: Water tanks 22 are fixedly connected to both sides of the bottom of the outer box 1. Float 21 is slidably connected to the inside of water tank 22. A siphon tube 23 extending to the outside of the outer box 1 is fixedly connected to the bottom of water tank 22. The highest point of the siphon tube 23 is level with the highest point of the movement of float 21.

[0033] Both sides of the push rod 18 are fixedly connected to extension rods 19. The inner side of the outer box 1 is rotatably connected to two symmetrically distributed synchronous connecting rods 20. The end of the extension rod 19 is slidably connected to the groove of the synchronous connecting rod 20. The extension rod 19 and the synchronous connecting rod 20 form a structure in which the two push rods 18 move synchronously in opposite directions. The inside of the water collection tank 2 is fixedly connected to two flow-slowing plates 24, and the two flow-slowing plates 24 form a V-shaped structure. The lower end of the flow-slowing plate 24 is separated from the inner wall of the water collection tank 2.

[0034] Rainwater entering the collection trough 2 first flows through the V-shaped structure formed by two fixedly connected buffer plates 24 inside the collection trough 2. The rainwater flows slowly along the inclined surface of the buffer plates 24, reducing the falling speed and impact force of the rainwater and reducing the impact of high-speed water flow on the tipping bucket metering component. After passing through the buffer, the rainwater flows down along the funnel-shaped inner wall at the bottom of the collection trough 2 and flows into the connecting pipe 8 fixedly connected at the bottom of the collection trough 2.

[0035] When the tipping bucket body 4 is tilted to a certain angle, the chamber that receives rainwater will pour out all the rainwater inside, and the poured rainwater will flow into the water storage tank 22 fixedly connected to the bottom of the outer box 1; at the same time, the empty chamber on the other side rotates to be directly below the guide hole 7 and begins to receive the subsequent rainwater.

[0036] As the tipping bucket 4 continuously and alternately pours out rainwater, the rainwater in the water storage tank 22 gradually accumulates and the water level rises continuously, causing the float 21, which is slidably connected inside the water storage tank 22, to move upward. The float 21 causes the first push rod 18, which is fixedly connected to it, to move vertically upward. The first push rod 18 causes the first set of slag discharge bars 16 connected to it to slide vertically upward along the inner side of the upper end of the water collection trough 2.

[0037] The extension rods 19, which are fixedly connected to the middle two sides of the first push rod 18, will slide in the groove of the synchronous connecting rod 20, which is rotatably connected to the inner side of the outer box 1. This will cause the synchronous connecting rod 20 to rotate around its rotation axis with the outer box 1. The other end of the synchronous connecting rod 20 will drive the extension rod 19 on the second push rod 18 to move in the opposite direction, thereby causing the second push rod 18 to move vertically downward. The second push rod 18 will drive the second set of slag discharge bars 16 connected to it to slide vertically downward along the inner side of the upper end of the water collection tank 2.

[0038] Since the two sets of slag discharge bars 16 are distributed at intervals, and the cross-section of the slag discharge bars 16 is a right trapezoid with the hypotenuse facing the slag discharge port 3, during the downward sliding of the second set of slag discharge bars 16, its hypotenuse will generate a horizontal component force on the debris at the top towards the slag discharge port 3, gradually pushing the debris towards the slag discharge port 3. Finally, the debris is discharged outside the outer box 1 through the slag discharge port 3 extending to the upper end of the water collection tank 2, completing the automatic slag discharge and cleaning operation.

[0039] When the water level in the water tank 22 rises to be level with the highest point of the siphon pipe 23 fixedly connected to the bottom of the water tank 22, the siphon pipe 23 begins to generate a siphon effect, quickly siphoning all the rainwater in the water tank 22 to the outside of the outer box 1. The water level in the water tank 22 drops rapidly, and the float 21 moves downward under its own weight, driving the first push rod 18 and the first set of slag discharge bars 16 to slide vertically downward. At the same time, through the transmission action of the extension rod 19 and the synchronous connecting rod 20, the second push rod 18 and the second set of slag discharge bars 16 are driven to slide vertically upward. Both sets of slag discharge bars 16 return to their initial positions, waiting for the next automatic slag discharge cycle.

[0040] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0041] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 real-time monitoring station for flood control rainfall based on the Internet of Things, comprising an outer casing (1), wherein a water collection trough (2) is fixedly connected to the inner side of the outer casing (1), and the tops of the outer casing (1) and the water collection trough (2) are connected to each other to form a funnel shape; Its features are: The outer box (1) is provided with a slag discharge port (3) on one side. The slag discharge port (3) extends to the upper end of the water collection tank (2). The inner side of the upper end of the water collection tank (2) is slidably connected with equidistantly distributed slag discharge strips (16). There are two sets of slag discharge strips (16), and each set of slag discharge strips (16) is spaced apart. Both ends of the slag discharge strips (16) are slidably connected to the inner wall of the water collection tank (2). One end of each set of slag discharge strips (16) is connected to each other and fixedly connected with a push rod (18). The push rod (18) extends vertically downward and is fixedly connected with a float (21). The connection between the push rod (18) and the float (21) is set as a hollow structure. The slag discharge strips (16) completely cover the top of the water collection tank (2). The top of the slag discharge strips (16) is provided with equidistantly distributed water inlet holes (17). The bottom of the slag discharge strips (16) is set as an open structure, and the cross section of the slag discharge strips (16) is a right trapezoid.

2. The real-time rainfall monitoring station for flood control based on the Internet of Things as described in claim 1, characterized in that: The bottom of the outer box (1) is provided with a tipping bucket metering component. The tipping bucket metering component includes a tipping bucket body (4). A mounting top (5) is fixedly connected to the middle of the top of the tipping bucket body (4). A sealing groove (6) is provided on the top of the mounting top (5), and both ends of the sealing groove (6) are provided with guide holes (7) facing the inside of the tipping bucket body (4).

3. A real-time rainfall monitoring station for flood control based on the Internet of Things as described in claim 2, characterized in that: The top of the mounting top (5) is an arc-shaped structure, and the center of the arc-shaped structure of the mounting top (5) coincides with the rotation axis of the tipping bucket body (4).

4. A real-time rainfall monitoring station for flood control based on the Internet of Things as described in claim 3, characterized in that: The bottom of the water collection tank (2) is funnel-shaped, and a connecting pipe (8) is fixedly connected to the bottom of the water collection tank (2). The bottom of the connecting pipe (8) is provided with a flange, and the bottom of the connecting pipe (8) is clamped in the sealing groove (6) through the flange.

5. A real-time rainfall monitoring station for flood control based on the Internet of Things as described in claim 4, characterized in that: The bottom of the outer box (1) is fixedly connected to two symmetrically distributed support rods (9), and a support plate (10) is fixedly connected between the two support rods (9). Limiting protrusions (11) are fixedly connected to both ends of the support plate (10).

6. A real-time rainfall monitoring station for flood control based on the Internet of Things as described in claim 5, characterized in that: Counters (12) are fixedly connected to both sides of the top of the support plate (10). The counters (12) are equipped with IoT-based communication components. A mounting base (13) is fixedly connected to the middle of the support plate (10). A rotating seat (14) is rotatably connected to the inner side of the mounting base (13). The rotating seat (14) is fixedly connected to the middle of the bottom of the tipping bucket body (4). The two ends of the rotating seat (14) correspond to the sensing areas of the two counters (12) respectively. A counterweight (15) is fixedly connected to the middle and both ends of the tipping bucket body (4). The counterweight (15) located at both ends of the rotating seat (14) and the limiting protrusion (11) form a rotation limiting structure for the tipping bucket body (4).

7. A real-time rainfall monitoring station for flood control based on the Internet of Things as described in claim 6, characterized in that: Water tanks (22) are fixedly connected to both sides of the bottom of the outer box (1). The float (21) is slidably connected to the inside of the water tank (22). A siphon tube (23) extending to the outside of the outer box (1) is fixedly connected to the bottom of the water tank (22). The highest point of the siphon tube (23) is level with the highest point of the float (21).

8. A real-time rainfall monitoring station for flood control based on the Internet of Things as described in claim 7, characterized in that: The push rod (18) is fixedly connected to extension rods (19) on both sides in the middle, and the outer box (1) is rotatably connected to two symmetrically distributed synchronous connecting rods (20).

9. A real-time rainfall monitoring station for flood control based on the Internet of Things as described in claim 8, characterized in that: The end of the extension rod (19) is slidably connected to the groove of the synchronous connecting rod (20), and the extension rod (19) and the synchronous connecting rod (20) form a structure in which two push rods (18) move synchronously in opposite directions.

10. A real-time rainfall monitoring station for flood control based on the Internet of Things as described in claim 9, characterized in that: The water collection tank (2) has two fixedly connected flow-slowing plates (24), and the two flow-slowing plates (24) form a V-shaped structure. The lower end of the flow-slowing plate (24) is separated from the inner wall of the water collection tank (2).

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