Flood disaster early warning system based on optical fiber communication

Abstract

The invention provides a flood early warning system based on optical fiber communication, the flood early warning system based on optical fiber communication comprises a mounting rack, a tipping-bucket rain gauge, a water level meter, a current meter, a monitoring assembly and a control box, the mounting rack is suitable for being mounted beside a river channel; the tipping-bucket rain gauge is connected with the mounting rack; the water level meter, the current meter, the monitoring assembly and the control box are connected with the mounting frame, and the control box is used for controlling the tipping-bucket rain gauge, the water level meter, the current meter and the monitoring assembly and transmitting monitoring data to the cloud platform management center and the resident terminal for flood early warning calling. Wherein a filter screen, a first conveying assembly and a second conveying assembly are arranged in a rain receiving opening of the tipping bucket type rain gauge, the first conveying assembly is connected with the filter screen and used for conveying garbage on the filter screen to the second conveying assembly, and the second conveying assembly is connected with the rain receiving opening and used for conveying the garbage to the outside of the rain receiving opening. According to the flood early warning system based on optical fiber communication, the filter screen can be effectively prevented from being blocked, and the measurement precision and the early warning accuracy are guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of early warning equipment, and in particular relates to a flood early warning system based on optical fiber communication. Background Art

[0002] A flood generally refers to the sudden surge and collapse of water along rivers and streams caused by heavy rain or the failure of flood control facilities, along with the accompanying landslides, collapses, and debris flows. A flood disaster is the resulting harm to people, including casualties, property damage, infrastructure destruction, and environmental resource damage caused by flooding, debris flows, and landslides. Floods are primarily affected by heavy rain, and therefore coincide with the onset of heavy rain. To detect floods before they occur, enabling affected areas to take timely measures and minimize loss of life and property, it is necessary to install a flood warning system based on fiber-optic communications in potentially affected areas for real-time monitoring.

[0003] Existing fiber-optic communication-based flood warning systems typically provide forecasts and warnings by monitoring changes in water levels and rainfall intensity and volume. However, these systems present challenges in mountainous areas with dense vegetation, making accurate flood warnings difficult.

[0004] On the one hand, trees or rocks can affect the transmission of wireless signals, while thunderstorms can affect the transmission of wired data, causing signal distortion.

[0005] On the other hand, the tipping bucket rain gauge is commonly used to monitor the change of rainfall intensity and rainfall. The top of the existing tipping bucket rain gauge is a rain receiving port for receiving rainwater, and a filter is set in the rain receiving port to filter out debris. Since heavy rain is often accompanied by strong winds, objects with large volume but small mass, such as leaves and plastic bags, are easily blown up by strong winds and fall into the rain receiving inlet, clogging the filter and affecting the flow of rainwater in the rain receiving inlet, thereby affecting the measurement accuracy and warning accuracy. Summary of the Invention

[0006] The present invention provides a flood warning system based on optical fiber communication, which aims to solve the problem that the current flood warning system based on optical fiber communication is used in mountainous areas with many trees, which may make it difficult to accurately warn of floods.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is to provide a flood warning system based on optical fiber communication, comprising: Mounting frame, suitable for installation beside the river; a tipping bucket rain gauge connected to the mounting frame; A water level meter, connected to the mounting frame, for monitoring the water level of the river; A current meter, connected to the mounting frame, for monitoring the flow velocity of water in the river; A monitoring component connected to the mounting frame; a control box connected to the mounting frame and having a controller and an optical fiber communication module therein; the controller is connected to the optical fiber communication module and is used to receive monitoring data transmitted by the tipping bucket rain gauge, the water level meter, the current meter, and the monitoring component, and transmit the monitoring data to the cloud platform management center and residents' terminals through the optical fiber communication module for flood warning calls; Among them, a filter screen, a first conveying component and a second conveying component are provided in the rain receiving port of the tipping bucket rain gauge. The first conveying component is connected to the filter screen and is used to convey the garbage on the filter screen to the second conveying component. The second conveying component is connected to the rain receiving port and is used to convey the garbage to the outside of the rain receiving port.

[0008] In a possible implementation of the flood warning system based on optical fiber communication provided by the present invention, the mounting frame includes a support rod and a plurality of cross rods, and the plurality of cross rods are spaced apart on the support rod and connected to the support rod.

[0009] In a possible implementation of the flood warning system based on optical fiber communication provided by the present invention, the optical fiber communication module includes an optical signal transceiver component and a data optical fiber. The optical signal transceiver component is connected to the controller. One end of the data optical fiber is connected to the optical signal transceiver component through an optical fiber connector, and the other end is connected to a relay station. The relay station is respectively connected to the cloud platform management center and the resident household end.

[0010] In a possible implementation of the flood warning system based on optical fiber communication provided by the present invention, the water level meter is an ultrasonic water level meter used to monitor the water level in the river.

[0011] In a possible implementation of the flood warning system based on optical fiber communication provided by the present invention, the current meter is an ultrasonic current meter used to monitor the flow velocity of water in a river.

[0012] In a possible implementation of the flood warning system based on optical fiber communication provided by the present invention, the filter screen has an inverted cone-shaped structure.

[0013] In a possible implementation of the flood warning system based on optical fiber communication provided by the present invention, the first conveying assembly includes a plurality of toggle assemblies and a first drive assembly, wherein the plurality of toggle assemblies are spaced apart along the busbar of the filter screen, and a power output end of the first drive assembly is connected to the toggle assemblies; The toggle assembly comprises: A plurality of toggle mechanisms are arranged in a ring shape around the axis of the rain receiving port, and each of the toggle mechanisms is rotatably connected to the filter screen; A plurality of transmission members are provided between two adjacent toggle mechanisms, with both ends respectively connected to the toggle mechanisms; The diameter of the ring formed by the plurality of the toggle assemblies gradually increases from the inside to the outside.

[0014] In a possible implementation of the flood warning system based on optical fiber communication provided by the present invention, the toggle mechanism includes: A sliding sleeve, rotatably connected to the filter screen on both sides perpendicular to the filter screen axis; The sliding rod is in sliding cooperation with the sliding sleeve. When the sliding rod is in a vertical state, the friction force between the sliding rod and the sliding sleeve is less than the weight of the sliding rod.

[0015] In a possible implementation of the flood warning system based on optical fiber communication provided by the present invention, the first driving component includes: A plurality of driven synchronous wheels are arranged at intervals along the busbar of the filter screen and correspond one to one with the toggle components, and the driven synchronous wheels are connected to the transmission member; A first motor assembly is connected to the rain receiving port; an active synchronous wheel connected to the power output end of the first motor assembly; A synchronous belt is wound around the active synchronous wheel and the plurality of driven synchronous wheels.

[0016] In a possible implementation of the flood warning system based on optical fiber communication provided by the present invention, the rain inlet has an inverted cone-shaped structure, and the second conveying assembly includes: An inner sleeve is sleeved in the rain receiving port and is arranged on the upper side of the filter screen, is spaced from the inner wall of the rain receiving port and is rotatably matched with the rain receiving port; the top of the inner sleeve protrudes from the rain receiving port and is provided with a retaining edge, a sliding groove is provided on the lower side of the retaining edge, and a plurality of sliders are provided on the top of the rain receiving port, and the sliders interact with the sliding grooves; a spiral ridge is provided on the outer wall of the inner sleeve, and an elastic layer is provided on the outer wall of the inner sleeve and the inner wall of the rain receiving port; A second drive assembly is connected to the tipping bucket rain gauge, and a power output end is connected to the inner sleeve for driving the inner sleeve to rotate; The air bag is arranged at the lower side of the inner sleeve and connected to the filter screen. The air bag is suitable for cyclic contraction and expansion to push the garbage into the space between the inner sleeve and the rain receiving port, and discharge the garbage from the rain receiving port through the rotation of the inner sleeve.

[0017] In a possible implementation of the flood warning system based on optical fiber communication provided by the present invention, the outer periphery of the retaining edge at the top of the inner sleeve is provided with teeth, the second drive assembly includes a second motor assembly and a gear, the second motor assembly is fixedly arranged, the power output end is connected to the gear, and the gear is engaged with the teeth on the outer periphery of the retaining edge.

[0018] The beneficial effects of the flood warning system based on optical fiber communication provided by the present invention are as follows: compared with the existing technology, the flood warning system based on optical fiber communication provided by the present invention can avoid the influence of rocks, trees and thunderstorm weather on signal transmission by adding an optical fiber communication module, so that the signal transmission is real and stable; and through the tipping bucket rain gauge, water level meter, flow meter and monitoring component, the river water flow changes and rainfall intensity and rainfall changes are monitored in real time, and the monitoring data is transmitted to the cloud platform management center and the residents' households for flood warning calls; and a filter screen, a first conveying component and a second conveying component are provided in the rain receiving port of the tipping bucket rain gauge, and the garbage on the filter screen is transported to the vicinity of the second conveying component by the first conveying component, and then the garbage is discharged from the rain receiving port by the second conveying component, thereby effectively avoiding the filter screen from being blocked, and ensuring the measurement accuracy and warning accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the three-dimensional structure of a flood warning system based on optical fiber communication provided by an embodiment of the present invention; Figure 2 A schematic diagram of the three-dimensional structure of a tipping bucket rain gauge in a flood warning system based on optical fiber communication provided by an embodiment of the present invention; Figure 3 A schematic diagram of the three-dimensional structure of a rain inlet in a flood warning system based on optical fiber communication provided by an embodiment of the present invention; Figure 4 A schematic diagram of the main structure of a rainwater inlet in a flood warning system based on optical fiber communication provided by an embodiment of the present invention; Figure 5 for Figure 4 A magnified view of part A in FIG; Figure 6 A schematic diagram of the top view of the rainwater inlet in the flood warning system based on optical fiber communication provided by an embodiment of the present invention; Figure 7 For the Figure 6 Cross-sectional structural diagram along line AA; Figure 8 for Figure 7 A magnified view of part B in FIG; Figure 9 A schematic diagram of the three-dimensional structure of a first transmission component in a flood warning system based on optical fiber communication provided by an embodiment of the present invention; Description of reference numerals: 10. Mounting frame; 20. Tipping bucket rain gauge; 21. Rain receiving port; 22. Slider; 23. Filter; 31. Water level meter; 32. Flow meter; 33. Monitoring component; 34. Control box; 41. Sliding sleeve; 42. Sliding rod; 43. Transmission member; 44. Driven synchronous wheel; 45. Active synchronous pulley; 46. Synchronous belt; 47. First motor assembly; 51. Inner sleeve; 52. retaining edge; 53. elastic layer; 54. spiral ridge; 60. airbag; 71. Second motor assembly; 72. Gear. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0021] Please also refer to Figures 1 to 9 The fiber-optic communication-based flood warning system provided by the present invention is now described. The fiber-optic communication-based flood warning system includes a mounting frame 10, a tipping bucket rain gauge 20, a water level meter 31, a current meter 32, a monitoring component 33, and a control box 34. The mounting frame 10 is suitable for installation beside a river; the tipping bucket rain gauge 20 is connected to the mounting frame 10; the water level meter 31 is connected to the mounting frame 10 for monitoring the water level in the river; the current meter 32 is connected to the mounting frame 10 for monitoring the flow velocity in the river; the monitoring component 33 is connected to the mounting frame 10; and the control box 34 is connected to the mounting frame 10. The controller and the fiber-optic communication module are internally provided. The controller is connected to the fiber-optic communication module to receive monitoring data transmitted by the tipping bucket rain gauge 20, the water level meter 31, the current meter 32, and the monitoring component 33, and transmits the monitoring data to the cloud platform management center and the residents' terminal through the fiber-optic communication module for flood warning calls.

[0022] Among them, a filter 23, a first conveying component and a second conveying component are provided in the rain receiving port 21 of the tipping bucket rain gauge 20. The first conveying component is connected to the filter 23 and is used to convey the garbage on the filter 23 to the second conveying component. The second conveying component is connected to the rain receiving port 21 and is used to convey the garbage to the outside of the rain receiving port 21.

[0023] It should be noted that the metering components in the tipping bucket rain gauge 20 are existing components. The mesh size of the filter screen 23 is shown in the figure.

[0024] The beneficial effects of the flood warning system based on optical fiber communication provided by the present invention are as follows: compared with the existing technology, the flood warning system based on optical fiber communication provided by the present invention can avoid the influence of rocks, trees and thunderstorm weather on signal transmission by adding an optical fiber communication module, so that the signal transmission is real and stable; and through the tipping bucket rain gauge 20, water level meter 31, flow meter 32 and monitoring component 33, the changes in river water flow and rainfall intensity and rainfall are monitored in real time, and the monitoring data is transmitted to the cloud platform management center and the residents' households for flood warning calls; and a filter screen 23, a first conveying component and a second conveying component are provided in the rain receiving port 21 of the tipping bucket rain gauge 20, and the garbage on the filter screen 23 is conveyed to the vicinity of the second conveying component by the first conveying component, and then the garbage is discharged from the rain receiving port 21 by the second conveying component, thereby effectively avoiding the filter screen 23 from being blocked, and ensuring measurement accuracy and warning accuracy.

[0025] like Figure 1 As shown, in a specific implementation of the flood warning system based on optical fiber communication provided by an embodiment of the present invention, the mounting frame 10 includes a support rod and a plurality of cross rods, and the plurality of cross rods are arranged on the support rod at intervals and connected to the support rod.

[0026] Specifically, the mounting frame 10 includes a support rod and two cross bars. The tipping bucket rain gauge 20 is connected to the upper cross bar, and the water level meter 31, the flow meter 32 and the monitoring assembly 33 are all connected to the lower cross bar.

[0027] In a specific implementation of the flood warning system based on optical fiber communication provided by an embodiment of the present invention, the optical fiber communication module includes an optical signal transceiver component and a data optical fiber. The optical signal transceiver component is connected to the controller. One end of the data optical fiber is connected to the optical signal transceiver component through an optical fiber connector, and the other end is connected to the relay station. The relay station is respectively connected to the cloud platform management center and the resident household end.

[0028] like Figure 1 As shown, in a specific implementation of the flood warning system based on optical fiber communication provided by an embodiment of the present invention, the water level meter 31 is an ultrasonic water level meter 31, which is used to monitor the water level in the river.

[0029] like Figure 1 As shown, in a specific implementation of the flood warning system based on optical fiber communication provided by an embodiment of the present invention, the current meter 32 is an ultrasonic current meter 32, which is used to monitor the flow velocity of water in the river.

[0030] like Figure 1 and Figure 2 As shown, in a specific implementation of the flood warning system based on optical fiber communication provided by an embodiment of the present invention, the filter 23 has an inverted cone structure to facilitate rainwater collection and downward flow.

[0031] As Figure 3 and Figure 9 shown, in a specific implementation manner of the flood warning system based on optical fiber communication provided in the embodiments of the present invention, the first conveying component includes a plurality of拨动 components and a first driving component. The plurality of拨动 components are arranged at intervals along the generatrix of the filter screen 23, and the power output end of the first driving component is connected to the拨动 component.

[0032] The拨动 component includes a plurality of拨动 mechanisms and a plurality of transmission members 43. The plurality of拨动 mechanisms are arranged in a ring around the axis of the rain receiving port 21, and each拨动 mechanism is rotatably connected to the filter screen 23; the plurality of transmission members 43 are arranged between two adjacent拨动 mechanisms and are respectively connected to the拨动 mechanisms at both ends; wherein, the diameter of the ring formed by the plurality of拨动 components gradually increases from the inside to the outside.

[0033] It should be noted that the transmission member 43 is a rubber rod, and both ends are fixedly connected to the拨动 mechanism to transmit torque through the rotation of the rubber rod; in addition, the transmission member 43 can also be a connecting rod provided with couplings at both ends.

[0034] Specifically, as Figure 3 and Figure 9 shown, in a specific implementation manner of the flood warning system based on optical fiber communication provided in the embodiments of the present invention, the拨动 mechanism includes a sliding sleeve 41 and a sliding rod 42. The sliding sleeve 41 is rotatably connected to the filter screen 23 on both sides perpendicular to the axis of the filter screen 23; the sliding rod 42 is slidably engaged with the sliding sleeve 41. When the sliding rod 42 is in the vertical state, the friction force between the sliding rod 42 and the sliding sleeve 41 is less than the self-weight of the sliding rod 42.

[0035] More specifically, the included angle between the sliding rod 42 and the horizontal plane is a. When 0 < a < 80°, the friction force between the sliding rod 42 and the sliding sleeve 41 is greater than the component force of the gravity of the sliding rod 42 in the axial direction of the sliding rod 42. When 80° < a ≤ 90°, the friction force between the sliding rod 42 and the sliding sleeve 41 is less than the component force of the gravity of the sliding rod 42 in the axial direction of the sliding rod 42. 80° is the critical angle. The numerical value here is only an example, and the specific critical angle can be set according to actual situations and requirements. By changing the materials and surface smoothness of the sliding rod 42 and the sliding sleeve 41, the friction coefficient between the sliding rod 42 and the sliding sleeve 41 can be changed, and thus the critical angle can be adjusted.

[0036] As Figure 3 and Figure 9As shown, in a specific implementation of the flood warning system based on optical fiber communication provided by an embodiment of the present invention, the first drive component includes a plurality of driven synchronous wheels 44, a first motor component 47, an active synchronous wheel 45 and a synchronous belt 46. The plurality of driven synchronous wheels 44 are arranged at intervals along the busbar of the filter screen 23, corresponding one-to-one to the toggle components, and the driven synchronous wheels 44 are connected to the transmission member 43; the first motor component 47 is connected to the rain receiving port 21; the active synchronous wheel 45 is connected to the power output end of the first motor component 47; and the synchronous belt 46 is wound around the active synchronous wheel 45 and the plurality of driven synchronous wheels 44.

[0037] It should be noted that during operation, the first motor assembly 47 drives the active synchronous wheel 45 to rotate, and drives multiple driven synchronous wheels 44 to rotate through the synchronous belt 46, thereby driving the sleeve 41 in the toggle mechanism in the multiple toggle assemblies to rotate; initially, the sleeve 41 is arranged vertically, and the slide rod 42 extends downward from the sleeve 41. In the process of the sleeve 41 rotating and driving the slide rod 42 to rotate, the slide rod 42 rotates from bottom to top, gradually protruding from the surface of the filter screen 23, and continues to rotate upward, to toggle the garbage on the filter screen 23 to the outside of the filter screen 23, until it rotates to a critical angle, and the slide rod 42 slides downward, effectively preventing the slide rod 42 from pressing down the garbage when continuing to rotate, entangled with the garbage, or causing the garbage to be stuck in the filter screen 23.

[0038] like Figures 4 to 8 As shown, in a specific embodiment of the flood warning system based on optical fiber communication provided by an embodiment of the present invention, the rain receiving port 21 is an inverted cone structure, the second conveying assembly includes an inner sleeve 51, a second driving assembly and an airbag 60, the inner sleeve 51 is arranged in the rain receiving port 21 and is arranged on the upper side of the filter screen 23, is spaced from the inner wall of the rain receiving port 21 and rotates with the rain receiving port 21; the top of the inner sleeve 51 protrudes from the rain receiving port 21 and is provided with a retaining edge 52, the lower side of the retaining edge 52 is provided with a slide groove, and the top of the rain receiving port 21 is provided with a plurality of sliders 2 2. The slider 22 interacts with the chute; a spiral ridge 54 is provided on the outer wall of the inner sleeve 51, and an elastic layer 53 is provided on the outer wall of the inner sleeve 51 and the inner wall of the rain receiving port 21; the second drive assembly is connected to the tipping bucket rain gauge 20, and the power output end is connected to the inner sleeve 51 to drive the inner sleeve 51 to rotate; the airbag 60 is provided on the lower side of the inner sleeve 51 and connected to the filter 23. The airbag 60 is suitable for cyclic contraction and expansion, pushing the garbage into the space between the inner sleeve 51 and the rain receiving port 21, and discharging the garbage from the rain receiving port 21 through the rotation of the inner sleeve 51.

[0039] Specifically, the distance between the inner sleeve 51 and the rain receiving opening 21 is small enough to clamp the garbage; the chute is a dovetail groove or a T-shaped groove to limit the movement of the inner sleeve 51 relative to the rain receiving opening 21 in the vertical direction.

[0040] It should be noted that the airbag 60 is intermittently supplied with air by the air pump, causing the airbag 60 to cyclically contract and expand. The first motor assembly 47 drives the toggle mechanism to toggle the garbage to the edge of the filter 23, and then is pushed into the space between the inner sleeve 51 and the inner wall of the rain receiving port 21 by the airbag 60. Since the rain receiving port 21 and the inner sleeve 51 are both inverted cone-shaped structures, the diameter of the inner sleeve 51 gradually increases from the inside to the outside. When the inner sleeve 51 rotates, the linear velocity of each point on the inner sleeve 51 gradually increases from the inside to the outside. Therefore, an outward pulling force is applied to the garbage sandwiched in the middle, causing the garbage to gradually move outward as it rotates with the inner sleeve 51 and eventually be discharged from the rain receiving port 21. Furthermore, a spiral rib 54 is provided on the outer wall of the inner sleeve 51 to further facilitate the outward movement and discharge of the garbage.

[0041] Furthermore, by providing an elastic layer 53 on the outer wall of the inner sleeve 51 and the inner wall of the rain receiving opening 21, the friction between the inner sleeve 51 and the rain receiving opening 21 is increased, thereby facilitating the collection of the garbage between the inner sleeve 51 and the rain receiving opening 21. Furthermore, the distance between the inner sleeve 51 and the rain receiving opening 21 can be adjusted elastically according to the volume of the garbage, thereby preventing the garbage from being unable to be collected, being crushed, or being stuck. Specifically, the elastic layer 53 is made of rubber, silicone, or plastic.

[0042] Furthermore, the lower ends of the inner sleeve 51 and the rain receiving port 21 are trumpet-shaped, that is, the distance between the lower ends of the inner sleeve 51 and the rain receiving port 21 gradually decreases from top to bottom, so as to clamp the garbage and roll the garbage between the inner sleeve 51 and the rain receiving port 21.

[0043] like Figure 1 and Figure 2 As shown, in a specific implementation of the flood warning system based on optical fiber communication provided by an embodiment of the present invention, teeth are provided on the outer periphery of the retaining edge 52 at the top of the inner sleeve 51, and the second drive assembly includes a second motor assembly 71 and a gear 72. The second motor assembly 71 is fixedly arranged, and the power output end is connected to the gear 72, and the gear 72 is engaged with the teeth on the outer periphery of the retaining edge 52.

[0044] Specifically, the teeth on the outer periphery of the retaining edge 52 and the teeth on the gear 72 are all helical teeth.

[0045] 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 and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A flood warning system based on optical fiber communication, characterized in that: include: A mounting frame, suitable for installation beside a river; A tipping bucket rain gauge connected to the mounting frame; A water level meter, connected to the mounting frame, for monitoring the water level of the river; A current meter, connected to the mounting frame, for monitoring the flow velocity of water in the river; A monitoring component connected to the mounting frame; A control box is connected to the mounting frame and is provided with a controller and an optical fiber communication module inside. The controller is connected to the optical fiber communication module and is used to receive monitoring data transmitted by the tipping bucket rain gauge, the water level meter, the flow meter and the monitoring component, and transmit the monitoring data to the cloud platform management center and the resident terminal through the optical fiber communication module for flood warning calls; Among them, a filter, a first conveying component and a second conveying component are provided in the rain receiving outlet of the tipping bucket rain gauge, the first conveying component is connected to the filter and is used to convey the garbage on the filter to the second conveying component, and the second conveying component is connected to the rain receiving outlet and is used to convey the garbage to the outside of the rain receiving outlet.

2. The flood warning system based on optical fiber communication as claimed in claim 1, characterized in that: The mounting frame comprises a support rod and a plurality of cross rods, wherein the plurality of cross rods are arranged on the support rod at intervals and connected to the support rod.

3. The flood warning system based on optical fiber communication as claimed in claim 1, characterized in that: The fiber optic communication module includes an optical signal transceiver component and a data optical fiber. The optical signal transceiver component is connected to the controller. One end of the data optical fiber is connected to the optical signal transceiver component through an optical fiber connector, and the other end is connected to a relay station. The relay station is respectively connected to the cloud platform management center and the resident terminal.

4. The flood warning system based on optical fiber communication as claimed in claim 1, characterized in that: The water level meter is an ultrasonic water level meter, which is used to monitor the water level in the river; the flow meter is an ultrasonic flow meter, which is used to monitor the flow velocity of the water in the river.

5. The flood warning system based on optical fiber communication as claimed in claim 1, characterized in that: The filter screen has an inverted cone structure.

6. The flood warning system based on optical fiber communication as claimed in claim 5, characterized in that: The first conveying assembly includes a plurality of toggle assemblies and a first driving assembly, wherein the plurality of toggle assemblies are arranged at intervals along the busbar of the filter screen, and a power output end of the first driving assembly is connected to the toggle assemblies; The toggle assembly comprises: A plurality of toggle mechanisms are arranged in a ring shape around the axis of the rain receiving port, and each of the toggle mechanisms is rotatably connected to the filter screen; A plurality of transmission members are arranged between two adjacent toggle mechanisms, and the two ends of the transmission members are respectively connected to the toggle mechanisms; Wherein, the diameter of the ring formed by the plurality of the toggle components gradually increases from the inside to the outside.

7. The flood warning system based on optical fiber communication as claimed in claim 6, characterized in that: The toggle mechanism comprises: A sliding sleeve, the two sides of which are perpendicular to the filter screen axis and are rotatably connected to the filter screen; The slide bar is slidably matched with the slide sleeve. When the slide bar is in a vertical state, the friction force between the slide bar and the slide sleeve is less than the weight of the slide bar.

8. The flood warning system based on optical fiber communication as claimed in claim 6, characterized in that: The first driving assembly comprises: A plurality of driven synchronous wheels are arranged at intervals along the busbar of the filter screen, corresponding to the toggle components one by one, and the driven synchronous wheels are connected to the transmission member; A first motor assembly connected to the rain receiving port; An active synchronous wheel connected to the power output end of the first motor assembly; A synchronous belt is wound around the active synchronous wheel and the plurality of driven synchronous wheels.

9. The flood warning system based on optical fiber communication as claimed in claim 1, characterized in that: The rain receiving port is an inverted cone-shaped structure, and the second conveying assembly includes: The inner sleeve is sleeved in the rain receiving port and arranged on the upper side of the filter, and is spaced from the inner wall of the rain receiving port and rotatably cooperates with the rain receiving port; the top of the inner sleeve protrudes from the rain receiving port and is provided with a retaining edge, a slide groove is provided on the lower side of the retaining edge, and a plurality of sliders are provided on the top of the rain receiving port, and the sliders interact with the slide grooves; the outer wall of the inner sleeve is provided with a spiral ridge, and the outer wall of the inner sleeve and the inner wall of the rain receiving port are both provided with an elastic layer; A second driving assembly is connected to the tipping bucket rain gauge, and a power output end is connected to the inner sleeve to drive the inner sleeve to rotate; The air bag is arranged at the lower side of the inner sleeve and connected to the filter screen. The air bag is suitable for cyclic contraction and expansion to push the garbage into between the inner sleeve and the rain receiving port, and discharge the garbage from the rain receiving port through the rotation of the inner sleeve.

10. The flood warning system based on optical fiber communication as claimed in claim 9, characterized in that: The outer periphery of the retaining edge at the top of the inner sleeve is provided with teeth, the second driving assembly includes a second motor assembly and a gear, the second motor assembly is fixedly arranged, the power output end is connected to the gear, and the gear is meshed with the teeth on the outer periphery of the retaining edge.

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