River hydrology long-term fixed-point monitoring device resistant to silt scouring

Abstract

The present application belongs to the field of hydrological monitoring, and particularly relates to a river hydrological long-term fixed-point monitoring device resistant to silt scouring, which comprises a monitoring host, a sampling pipeline and a sampling probe module, and a silt scouring resistant filter and a backwashing device are connected in series at the front end of the sampling pipeline; the silt scouring resistant filter comprises a Y-shaped filter and a vibration driver, and multi-dimensional vibration is generated through hydraulic amplification to dredge the filter element. A data processing and diagnosis module is arranged in the monitoring host, the relative deviation of the measurement values of the double probes is calculated, and the number of times of deviation exceeding the limit is counted based on a sliding window with a length of N, and an alarm is only sent when the deviation exceeds the limit continuously for multiple times, so that false alarms caused by accidental errors are avoided. The present application has the functions of silt filtering, backwashing self-cleaning, redundancy fault tolerance and intelligent diagnosis, and is suitable for long-term hydrological monitoring of high-silt rivers.

Description

Technical Field

[0001] This invention relates to the field of water conservancy and hydrological monitoring technology, specifically to a long-term fixed-point monitoring device for river hydrology that is resistant to silt erosion. Background Technology

[0002] River hydrological monitoring is a crucial foundation for water resource management, flood control and disaster reduction, and water environment protection. In rivers with high sediment content, siltation and water erosion are the core issues hindering the long-term stable operation of hydrological monitoring devices. Existing long-term fixed-point river hydrological monitoring devices mostly use direct water intake to detect hydrological parameters. Under high sediment load conditions, sediment particles easily clog the water intake channel and adhere to and deposit on the inner wall of the sampling pipe, leading to distorted monitoring data, frequent equipment failures, and drawbacks such as short maintenance cycles and high operation and maintenance costs.

[0003] Current technologies attempt to alleviate clogging by adding filter components to the front end of monitoring equipment. Chinese utility model patent CN212008554U discloses a water quality online monitoring pretreatment device that uses a Y-type filter to achieve two-stage filtration, removing large suspended solids and impurities from water samples. However, this solution is only suitable for indoor water quality analyzer pretreatment scenarios and does not incorporate a backwashing self-cleaning structure designed for outdoor river conditions. Therefore, the filter components still face the risk of clogging quickly during long-term operation. Chinese invention patent CN115090018B discloses a backwashing filtration method, but its application is limited to industrial fluid filtration systems and does not adapt its structure and control logic to dynamic river flow, siltation, or open-air environments.

[0004] Meanwhile, traditional online monitoring devices generally adopt a single sampling probe design. Once the probe is covered with mud and sand, blocked, or the electronic components fail, the entire monitoring system will fail directly, and the equipment cannot independently determine the validity of the data.

[0005] In summary, there is currently a lack of integrated monitoring equipment in the field of hydrology and water conservancy that is suitable for rivers with high sediment content, has self-cleaning capabilities, redundancy and fault tolerance capabilities, and intelligent fault diagnosis capabilities. Developing such devices is of great practical significance for achieving long-term stable monitoring of river hydrology. Summary of the Invention

[0006] The purpose of this invention is to provide a long-term fixed-point monitoring device for river hydrology that is resistant to silt erosion, so as to solve the above-mentioned problems.

[0007] The purpose of this invention is to provide a long-term fixed-point monitoring device for river hydrology that is resistant to silt erosion, which can be achieved through the following technical solutions: A long-term fixed-point monitoring device for river hydrology resistant to sediment erosion includes a monitoring host, a sampling pipeline, and a sampling probe module electrically connected to the monitoring host. A sediment-resistant filter and a backwashing device are connected in series at the front end of the sampling pipeline. The inlet end of the sediment-resistant filter is connected to the sampling pipeline, and the outlet end of the sediment-resistant filter is also connected to the sampling pipeline. The backwashing device includes a backwashing pipeline and a backwashing control valve. One end of the backwashing pipeline is connected to a clean water source, and the other end of the backwashing pipeline is connected to the backwashing port of the sediment-resistant filter.

[0008] Furthermore, the sampling probe module includes a first sampling probe and a second sampling probe, which are arranged sequentially along the water flow direction and spaced at a predetermined distance; the sampling probe module integrates at least one hydrological sensor; The monitoring host is equipped with a data processing and diagnostic module, which performs the following steps: Step 1: Calculate the relative deviation between the measured values ​​of the same hydrological parameter from the first sampling probe and the second sampling probe; Step 2: When the relative deviation is less than or equal to the first threshold, output the mean or weighted value of the two measurements as the monitoring result; Step 3: When the relative deviation is greater than the second threshold, record the deviation exceeding the limit event; Step 4: Based on a sliding window of preset length N, count the number of times K of relative deviation exceeds the second threshold in the most recent N samples; When K≥M, an alarm signal is issued, where M is the preset number of triggers; When K < M, only data quality is marked, and no alarm is triggered.

[0009] Furthermore, when an alarm signal is triggered, the data processing and diagnostic module compares the current measurement value of the first sampling probe and / or the second sampling probe with its own historical data to identify the first sampling probe / second sampling probe that has malfunctioned. When both the first and second sampling probes are working normally, the monitoring host uses a dynamic weighted fusion algorithm to process the measured values.

[0010] Furthermore, the silt-resistant filter includes a Y-type filter, which includes a horizontal pipe section and a filter tube section. The filter tube section is equipped with a filter element for filtering the contents of the horizontal pipe section. The silt-resistant filter also includes a vibration actuator for applying vibration to the input side of the filter element. There are two vibration actuators, which are arranged vertically at the horizontal pipe section.

[0011] Furthermore, the vibration actuator includes an outer disk, a hydraulic chamber located on one side of the outer disk, and a frustum-shaped vibrator head. The outer disk contains a vibrating plate and an oscillator. The vibrating plate includes a main deformation section with an arc-shaped cross-section and a tapered tube section, which are integrally connected. The main deformation section is fixedly connected to the oscillator, the oscillator is fixedly connected to the inner wall of the outer disk, and the tapered tube section is fixedly connected to the inner wall of the outer disk. The hydraulic chamber and the interior of the outer disk are connected by a fluid hole. The hydraulic chamber is fixedly connected to a horizontal pipe section. The vibrator head is located outside the hydraulic chamber, and an elastic sealing ring connects the vibrator head to the hydraulic chamber. The vibrator head is located inside the horizontal pipe section. Both the hydraulic chamber and the outer disk are filled with hydraulic medium.

[0012] Furthermore, the elastic sealing ring is a rubber sealing ring, and its surface is provided with helical spring-shaped vulcanized hardening textures distributed along the outer ring of the elastic sealing ring by vulcanization technology. The hardness of the vulcanized hardening textures is 4 to 5 degrees different from the Shore A hardness of the unvulcanized hardening area.

[0013] Furthermore, the end face of the vibrating head located inside the hydraulic chamber is provided with multiple inclined grooves.

[0014] Furthermore, the vibrator located on the upper side inside the horizontal tube section is marked as the upper vibrator, and the vibrator located on the lower side inside the horizontal tube section is marked as the lower vibrator. The lower end of the upper vibrator is rotatably connected to a rotating part; the lower vibrator is in close contact with the outer side of the filter element, and the rotating part is located on the outer side of the upper part of the filter element. The distance between the rotating part and the lower vibrating head is 2~3cm.

[0015] Furthermore, the outer disk corresponding to the upper vibrating head is marked as the upper outer disk, and the outer disk corresponding to the lower vibrating head is marked as the lower outer disk. The axial direction of the upper outer disk is perpendicular to the axial direction of the lower outer disk.

[0016] Furthermore, the hydrological sensor includes at least one of the following: water temperature sensor, pressure-type water level sensor, conductivity sensor, turbidity sensor, pH sensor, dissolved oxygen sensor, flow rate sensor, and suspended solids concentration sensor.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The pre-filter Y-type filter can efficiently intercept large particles of sediment in the water flow, preventing sediment from entering the monitoring pipeline and sensor, significantly improving the equipment's resistance to scouring and clogging in high sediment-laden rivers, and ensuring long-term continuous operation.

[0018] 2. Integrated backwashing device, supporting timed and differential pressure dual triggering modes, can complete reverse cleaning and sewage discharge of Y-type filter online, and can also better rinse the inner wall during offline disassembly and cleaning; the operation and maintenance cost in field scenarios is relatively low.

[0019] 3. A redundant dual-sampling probe deployment structure is adopted, so that if one set of probes fails, the other set can still collect data normally, completely avoiding the data interruption problem caused by single point of failure and improving the reliability of system operation.

[0020] 4. A deviation discrimination mechanism based on historical sliding windows is introduced to effectively filter out false anomalies caused by accidental interference such as instantaneous water flow disturbances, bubbles, and random floating objects. Actual measurements show that it can significantly reduce the false alarm rate of equipment and reduce ineffective inspection work.

[0021] 5. It has a self-diagnostic function for faults. After an alarm is triggered, it can automatically compare the historical data of the probe to accurately locate the fault and guide maintenance personnel to carry out targeted repairs.

[0022] 6. The equipment features an integrated design with a high level of protection, making it suitable for various installation scenarios such as riverbanks and buoys. This significantly extends the overall maintenance cycle of the equipment, making it particularly suitable for river hydrological monitoring in remote and inaccessible areas. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the silt-resistant filter described in this invention; Figure 2 This is a schematic diagram of the outer disc and the hydraulic chamber of the present invention. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0025] The following detailed description of embodiments of this application is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0026] In the description of the embodiments of this application, it should be noted that if terms such as "upper," "lower," "left," "right," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing this application and simplifying the description, and 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 a limitation on this application. In addition, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] In the description of the embodiments of this application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0028] Example 1

[0029] The aforementioned long-term fixed-point monitoring device for river hydrology resistant to sediment erosion includes a monitoring host, a sampling pipeline, and a sampling probe module electrically connected to the monitoring host. A sediment-resistant filter and a backwashing device are connected in series at the front end of the sampling pipeline. The inlet end of the sediment-resistant filter is connected to the sampling pipeline, and the outlet end of the sediment-resistant filter is also connected to the sampling pipeline. The backwashing device includes a backwashing pipeline and a backwashing control valve. One end of the backwashing pipeline is connected to a clean water source, and the other end of the backwashing pipeline is connected to the backwashing port of the sediment-resistant filter.

[0030] In some other embodiments, the sampling probe module includes a first sampling probe and a second sampling probe, which are arranged sequentially along the water flow direction and spaced at a predetermined distance; the sampling probe module integrates at least one hydrological sensor; The monitoring host is equipped with a data processing and diagnostic module, which is used to synchronously receive hydrological data collected by the first sampling probe and the second sampling probe, and perform data comparison, quality judgment, fault diagnosis and alarm control. The specific operating logic is as follows: Step 1: Calculate the relative deviation between the measurements of the same hydrological parameter from the first and second sampling probes. The relative deviation is the ratio of the absolute value of the difference between the two measurements to the larger of the two measurements. The accuracy of the current monitoring data is determined based on the relative deviation.

[0031] Step 2: Preset the first threshold and the second threshold. When the relative deviation is less than or equal to the first threshold, it is determined that both the first sampling probe and the second sampling probe are working normally. The arithmetic mean or weighted value of the two measurements is output as the final monitoring result.

[0032] Step 3: When the relative deviation exceeds the second threshold, record the deviation exceeding the limit event; Step 4: Based on a sliding window of preset length N, count the number of times K of relative deviation exceeds the second threshold in the most recent N samples; When K≥M, it is determined to be a continuous data anomaly and an alarm signal is issued, where M is the preset number of triggers; When K < M, the deviation is identified as being caused by accidental factors such as instantaneous eddies, bubbles, or temporary obstruction by floating objects. The data is simply marked as low-quality data and no alarm is triggered.

[0033] For example, in this scheme, the preferred sliding window length is N=10, and the preferred preset trigger count is M=7.

[0034] After the system issues an alarm signal, the data processing and diagnostic module calculates the deviation of the current measurement values ​​of the first and second sampling probes from their respective 24-hour historical moving averages. Based on the magnitude of the deviation difference, it accurately identifies the faulty sampling probe and uploads the fault information to the remote monitoring center.

[0035] In some other embodiments, when an alarm signal is triggered, the data processing and diagnostic module compares the current measurement value of the first sampling probe and / or the second sampling probe with its own historical data to identify the first sampling probe / second sampling probe that has malfunctioned. When both the first and second sampling probes are working normally, the monitoring host uses a dynamic weighted fusion algorithm to process the measured values.

[0036] The hydrological sensor includes at least one of the following: water temperature sensor, pressure level sensor, conductivity sensor, turbidity sensor, pH sensor, dissolved oxygen sensor, flow rate sensor, and suspended solids concentration sensor.

[0037] For sampling probe modules in the same group, the sensor type and measurement range of the first and second sampling probes must be completely identical to ensure the comparability of the collected data. The preferred distance between the first and second sampling probes is 0.5 to 2 meters.

[0038] Example 2

[0039] Based on Example 1, such as Figure 1 , 2 As shown, the silt-resistant filter includes a Y-type filter 10, which includes a horizontal pipe section and a filter tube section 11. The filter tube section 11 is provided with a filter element 12 for filtering the horizontal pipe section. The silt-resistant filter also includes a vibration actuator 50 for applying vibration to the input side of the filter element 12. There are two vibration actuators 50, which are arranged vertically at the horizontal pipe section.

[0040] The port of the filter tube section 11 is equipped with a filter element cover, which is threadedly connected to the port of the filter tube section 11; during backwashing, the port of the filter tube section 11 can be a drain outlet.

[0041] When filter element 12 needs to be replaced, open the filter element cover and replace it with a new filter element 12.

[0042] Generally, the filter element 12 is not solid; it is a hollow cylindrical structure with several filter pores on its inner wall. The hollow structure inside the filter element 12 can generally accommodate a certain amount of impurities. When a certain amount of impurities accumulate inside the filter element 12, or when most of the filter pores on the inner wall of the filter element 12 are blocked, large-scale blockage will occur.

[0043] When filter element 12 becomes clogged, if technicians are temporarily unable to go to the site but measurements are still required, the inlet solenoid valve corresponding to the front end of the silt-resistant filter must be opened first. At this time, online backwashing can clear the impurities near the top of filter element 12 and some of the blocked filter holes, and finally the sewage will be discharged from the inlet solenoid valve. This can effectively relieve the clogging at filter element 12. When the technicians have time, they can go to the site to replace the filter element 12 with a new one.

[0044] In some other embodiments, the vibration actuator 50 includes an outer disk 51, a hydraulic chamber 52 located on one side of the outer disk 51, and a frustum-shaped vibrator head 230. The outer disk 51 contains a vibrating plate and a vibrator 53. The vibrating plate includes a main deformation portion 551 with an arc-shaped cross-section and a tapered tube portion 552, which are integrally connected. The main deformation portion 551 is fixedly connected to the vibrator 53, and the vibrator 53 is fixedly connected to the inner wall of the outer disk 51. The tapered tube portion 552 is also fixedly connected to the inner wall of the outer disk 51. The hydraulic chamber 52 and the interior of the outer disk 51 are connected by a fluid hole. The hydraulic chamber 52 is fixedly connected to a horizontal pipe section. The vibrator head 230 is located outside the hydraulic chamber 52, and an elastic sealing ring connects the vibrator head 230 to the hydraulic chamber 52. The vibrator head 230 is disposed inside the horizontal pipe section. Both the hydraulic chamber 52 and the outer disk 51 are filled with hydraulic medium.

[0045] Preferably, the main deformation section 551 and the tapered tube section 552 are made of a copper alloy with excellent elasticity, such as beryllium bronze; the hydraulic medium is preferably vegetable oil, hydraulic oil, etc.

[0046] When the vibrator 53 vibrates, the main deformation part 551 deforms and has a large amplitude of front-to-back displacement, which can disturb the hydraulic medium in the outer plate 51. The hydraulic medium transmits this disturbance to the vibrator head 230. Since the vibrator head 230 is fixed to the outside by using an elastic sealing ring, the vibrator head 230 can vibrate at a small amplitude. The vibration generated by the vibrator head 230 can vibrate the filter element 12 located nearby, thereby effectively clearing the filter holes blocked on the surface of the filter element 12.

[0047] In this invention, the vibrator head 230 uses hydraulic technology to amplify the amplitude of the vibration generated at the oscillator 53, thereby improving the vibration effect. Furthermore, using an external vibrator head 230 effectively extends its service life.

[0048] In some embodiments, since the elastic sealing ring is a consumable part in this invention, its service life needs to be extended to reduce maintenance frequency. Therefore, the elastic sealing ring is a rubber sealing ring, and its surface is provided with helical spring-shaped vulcanized hardening textures distributed along the outer ring of the elastic sealing ring through vulcanization technology. The hardness of the vulcanized hardening textures differs from that of the unvulcanized hardening area by 4-5 degrees in Shore A hardness. Tests have shown that the service life of a rubber sealing ring without vulcanized hardening textures, calculated cumulatively, is 2163 hours in the usage environment of this invention; while the service life of the elastic sealing ring of this invention is 3288 hours, an improvement of 52%. However, if the vulcanized hardening textures are evenly spaced circular patterns, rather than helical spring-shaped, due to discontinuity and the direct separation of the soft and hard areas, premature failure will occur after long-term use. Tests have shown that the service life of such rings is less than 1800 hours. If the difference between the hardness of the vulcanized hardened texture and the Shore A hardness of the unvulcanized hardened area is too large, the range of motion of the vibrator 230 will be limited, and the resulting vibration effect will be poor.

[0049] In some other embodiments, the vibrating head 230 has multiple inclined grooves on the side face inside the hydraulic chamber 52. The bottom surface of the grooves is inclined, which can decompose forces perpendicular to the bottom surface of the grooves, thus facilitating the generation of multi-directional vibration forces by the vibrating head 230.

[0050] In some other embodiments, the vibrator 230 located on the upper side inside the horizontal tube section is designated as the upper vibrator 20, and the vibrator 230 located on the lower side inside the horizontal tube section is designated as the lower vibrator 30. The lower end of the upper vibrator 20 is rotatably connected to a rotating part 21. The lower vibrator 30 is in close contact with the outer side of the filter element 12, and the rotating part 21 is located on the outer side of the upper part of the filter element 12. To enhance the vibration superposition effect between the two vibrating heads 230, the distance between the rotating part 21 and the lower vibrating head 30 is 2-3 cm. If the distance is too small, the vibration superposition effect is greater, but the resistance to fluid flow is also greater, especially for turbid water containing particulate matter. Conversely, if the distance is too large, the vibration superposition effect is weaker, and the effect on removing impurities from the filter screen of the filter element 12 is worse.

[0051] In this invention, the vibration field between and around the two vibrating heads 230 can generate intense vibration in the water inlet area, thereby maximally alleviating the degree of clogging at the filter screen of the filter element 12.

[0052] The reason for setting up the rotating part 21 is that if a large piece of sediment peeled off from the inner wall gets stuck between the two vibrating heads 230, the rotating part 21 can rotate 360°. Even if it gets stuck, it is not easy to get stuck under the action of vibration, thus reducing the chance of getting stuck.

[0053] In some other embodiments, the outer disk 51 corresponding to the upper vibrating head 20 is marked as the upper outer disk, and the outer disk 51 corresponding to the lower vibrating head 30 is marked as the lower outer disk. The axial direction of the upper outer disk is perpendicular to that of the lower outer disk. This ensures that the original vibration directions of the two vibration sources are perpendicular. After amplification, although there is some attenuation and waveform propagation direction deviation, the superimposed vibration waveform has a wider coverage and better vibration effect, which is more conducive to unblocking clogged filter holes. Experiments have shown that a 90° superposition effect is the best. Angles of 30°, 45°, and 60° between the axial direction of the upper outer disk and the axial direction of the lower outer disk have limited unblocking effect on some special particles, such as small stones, sticky particles, and foam particles, and are far inferior to the 90° superposition effect.

[0054] Especially when foam particles get stuck in the filter holes, the soft texture of the foam particles makes them difficult to clear. Attempts to clear the blockage using ultrasonic transducers applied directly to the filter surface or from a distance of 1-10 cm have yielded limited success, with a clearing rate of less than 30% (based on the number of blocked filter holes cleared). However, in this invention, the rotating part 21 undergoes a slight rotational displacement during vibration. Combined with the combined vibrations of the two transducers 230 and the perpendicular vibration direction of the vibration source, this results in a clearing rate exceeding 57% for filter holes blocked by foam particles. This is likely because this unique vibration field generates a resonance field with the foam particles, thus clearing them. Other particulate matter (such as small stones and soil particles) can be effectively cleared by sufficiently strong vibration, without necessarily requiring resonance.

[0055] To facilitate the loading of hydraulic medium, a liquid filling port is provided on the outside of the hydraulic chamber 52, and a screw cap 54 is threadedly connected to the outside of the liquid filling port.

[0056] In this embodiment, the convex direction of the main deformation portion 551 faces outward from the oscillating disk. This design makes it easier to maximize elastic deformation under a vibration source with limited force, thereby amplifying the vibration amplitude. However, if the main deformation portion 551 is also a conical tube structure, according to stress analysis, fatigue fracture is likely to occur at the connection between the conical tube portion 552 and the main deformation portion 551. The structure of this invention is relatively better, as stress concentration is less pronounced. Furthermore, if the main deformation portion 551 is a recessed structure facing inward from the oscillating disk, this design has been found to have limited effect on amplifying the vibration amplitude of the vibration source, which is inferior to this invention.

[0057] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the invention.

[0058] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A long-term fixed-point monitoring device for river hydrology resistant to silt erosion, comprising a monitoring host, sampling pipeline, and a sampling probe module electrically connected to the monitoring host, characterized in that: A silt-resistant filter and a backwashing device are connected in series at the front end of the sampling pipeline; the inlet of the silt-resistant filter is connected to the sampling pipeline, and the outlet of the silt-resistant filter is connected to the sampling pipeline; the backwashing device includes a backwashing pipeline and a backwashing control valve, one end of the backwashing pipeline is connected to a clean water source, and the other end of the backwashing pipeline is connected to the backwashing port of the silt-resistant filter.

2. The long-term fixed-point monitoring device for river hydrology resistant to silt erosion according to claim 1, characterized in that: The sampling probe module includes a first sampling probe and a second sampling probe, which are arranged sequentially along the water flow direction and spaced at a predetermined distance; the sampling probe module integrates at least one hydrological sensor. The monitoring host is equipped with a data processing and diagnostic module, which performs the following steps: Step 1: Calculate the relative deviation between the measured values ​​of the same hydrological parameter from the first sampling probe and the second sampling probe; Step 2: When the relative deviation is less than or equal to the first threshold, output the mean or weighted value of the two measurements as the monitoring result; Step 3: When the relative deviation is greater than the second threshold, record the deviation exceeding the limit event; Step 4: Based on a sliding window of preset length N, count the number of times K of relative deviation exceeds the second threshold in the most recent N samples; When K≥M, an alarm signal is issued, where M is the preset number of triggers; When K < M, only data quality is marked, and no alarm is triggered.

3. The long-term fixed-point monitoring device for river hydrology resistant to silt erosion according to claim 2, characterized in that: When an alarm signal is triggered, the data processing and diagnostic module compares the current measurement value of the first sampling probe and / or the second sampling probe with its own historical data to identify the first sampling probe / second sampling probe that has malfunctioned. When both the first and second sampling probes are working normally, the monitoring host uses a dynamic weighted fusion algorithm to process the measured values.

4. The long-term fixed-point monitoring device for river hydrology resistant to silt erosion according to claim 1, characterized in that: The silt-resistant filter includes a Y-type filter, which includes a horizontal pipe section and a filter tube section. The filter tube section is equipped with a filter element for filtering the horizontal pipe section. The silt-resistant filter also includes a vibration actuator for applying vibration to the input side of the filter element. There are two vibration actuators, which are arranged vertically at the horizontal pipe section.

5. The long-term fixed-point monitoring device for river hydrology resistant to silt erosion according to claim 4, characterized in that: The vibration actuator includes an outer disk, a hydraulic chamber located on one side of the outer disk, and a frustum-shaped vibrator head. The outer disk contains a vibrating plate and an oscillator. The vibrating plate includes a main deformation section with an arc-shaped cross-section and a tapered tube section, which are integrally connected. The main deformation section is fixedly connected to the oscillator, and the oscillator is fixedly connected to the inner wall of the outer disk. The tapered tube section is also fixedly connected to the inner wall of the outer disk. The hydraulic chamber and the outer disk are connected by a fluid hole, and the hydraulic chamber is fixedly connected to a horizontal pipe section. The vibrator head is located outside the hydraulic chamber, and an elastic sealing ring connects the vibrator head to the hydraulic chamber. The vibrator head is located inside the horizontal pipe section. Both the hydraulic chamber and the outer disk are filled with hydraulic medium.

6. The long-term fixed-point monitoring device for river hydrology resistant to silt erosion according to claim 5, characterized in that: The elastic sealing ring is a rubber sealing ring, and its surface is provided with helical spring-shaped vulcanized hardening textures distributed along the outer ring of the elastic sealing ring by vulcanization technology. The hardness of the vulcanized hardening textures is 4 to 5 degrees different from the Shore A hardness of the unvulcanized hardening area.

7. A long-term fixed-point monitoring device for river hydrology resistant to silt erosion as described in claim 5, characterized in that: The vibrator has multiple inclined grooves on the end face of the side inside the hydraulic chamber.

8. A long-term fixed-point monitoring device for river hydrology resistant to silt erosion as described in claim 5, characterized in that: The vibrator located on the upper side inside the horizontal tube section is marked as the upper vibrator, and the vibrator located on the lower side inside the horizontal tube section is marked as the lower vibrator. The lower end of the upper vibrator is rotatably connected to a rotating part; the lower vibrator is in close contact with the outer side of the filter element, and the rotating part is located on the outer side of the upper part of the filter element. The distance between the rotating part and the lower vibrating head is 2~3cm.

9. A long-term fixed-point monitoring device for river hydrology resistant to silt erosion according to claim 4, characterized in that: The outer disk corresponding to the upper vibrating head is marked as the upper outer disk, and the outer disk corresponding to the lower vibrating head is marked as the lower outer disk. The axial direction of the upper outer disk is perpendicular to the axial direction of the lower outer disk.

10. A long-term fixed-point monitoring device for river hydrology resistant to silt erosion according to claim 2, characterized in that: The hydrological sensor includes at least one of the following: water temperature sensor, pressure-type water level sensor, conductivity sensor, turbidity sensor, pH sensor, dissolved oxygen sensor, flow rate sensor, and suspended solids concentration sensor.

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