277 results about "Stream gauge" patented technology

The invention provides a hydropower station natural disaster intelligent early warning and emergency decision-making method and system based on multi-source data fusion and dynamic threshold optimization, and the method comprises the steps: collecting the water regimen data of a hydropower station and a drainage basin in real time through the deployment of a water level gauge, a rain gauge, a wind speed sensor and a thunder and lightning monitoring device, and combining weather forecast data and historical hydrological data, thereby achieving the intelligent early warning and emergency decision-making of the hydropower station. And dynamically calculating a disaster threshold value, and generating a graded early warning signal. The system comprises a data acquisition module, a dynamic threshold matching module, an early warning generation module, a case retrieval module, an information issuing module and a response tracking module. The early warning threshold is dynamically adjusted through multi-source data fusion and a machine learning technology, and the early warning accuracy is improved; a historical case library is constructed by using a knowledge graph technology, and intelligent recommendation of a disaster disposal scheme is realized; and early warning information and disposal suggestions are directionally pushed through multiple channels, so that the emergency response efficiency is improved. The conversion from passive response to active early warning is realized, and the influence of natural disasters on the operation of the hydropower station is obviously reduced.

The invention discloses an automatic monitoring system and method for hydrological data and a storage medium. The automatic monitoring system comprises a multi-modal data acquisition module, an edge intelligent processing module and a cloud platform. The multi-modal data acquisition module acquires water level, water quality and meteorological data in real time through a radar water level gauge, a multi-parameter water quality meter and a rain gauge, and transmits the data to the edge intelligent processing module; the module extracts and aligns spatio-temporal features through a multi-scale spatio-temporal convolution unit, an uncertainty quantization unit is fused with Bayesian to calculate confidence, and complete data or abstract features are selectively transmitted to a cloud according to an abnormal classification judgment result; the cloud platform fuses multi-source features through a space-time attention mechanism, dynamically adjusts an early warning threshold based on a near-end strategy optimization algorithm, aggregates edge node model parameters through a federated learning framework in combination with a homomorphic encryption technology, updates a global model, and then synchronizes the global model to edge nodes to form closed-loop optimization.

The invention belongs to the technical field of water conservancy monitoring, and discloses a water conservancy water level monitoring device and method, and the method comprises the steps: a monitoring point arrangement module of a monitoring mechanism reasonably arranges the number and positions of monitoring points; the flow velocity monitoring module monitors the water velocity; the meteorological data acquisition module acquires meteorological data; the echo sounder emits sound waves, and the water depth is calculated according to the sound wave propagation time and the sound velocity in water; the pressure water level gauge, the laser water level gauge and the radar water level gauge monitor the water level of water conservancy. The echo data analysis module analyzes the echo data; the comprehensive analysis module comprehensively analyzes the water level; the predictive analysis module predicts a water level trend and potential risks. The water level of water conservancy is monitored through various water level gauges, cross validation and high precision are achieved, and the sediment deposition thickness is accurately calculated by analyzing echo data; the comprehensive analysis module comprehensively evaluates the water level; the prediction analysis module integrates various monitoring equipment data and meteorological data, and predicts the water level trend and potential risks.

The invention relates to the technical field of water level measurement, in particular to a water level precision measurement method, system and equipment applied to a water conservancy project, and the method comprises the steps: obtaining an electromagnetic wave signal emitted to the water surface by a radar water level gauge in real time, recording the electromagnetic wave signal as an emission signal, and obtaining an echo signal received at each measurement moment; water level data, measured by the radar water level gauge through the received echo signals, at each measurement moment are obtained; calculating a signal fluctuation degree and an energy loss ratio of each measurement moment, determining a first evaluation value, a second evaluation value and a water level fluctuation degree of each measurement moment, and obtaining an interference coefficient of each measurement moment; and correcting the water level data based on the water level data and the disturbed coefficients of each measurement moment and a plurality of measurement moments before the measurement moment to obtain the corrected water level data of each measurement moment. The interference influence of the multipath effect, noise and water surface fluctuation on the echo signal can be reduced, and the precision of the radar water level gauge on the water level measurement result is improved.

The invention provides a geothermal well water level gauge-based water level accurate measurement and monitoring management method, which comprises the following steps of: performing integrated monitoring deployment by combining various sensors, probe fixing guide rails and double probes; deploying an edge calculation module to obtain underground measurement data; performing drift correction and anti-interference detection on the sensor, and deploying a sensor standby channel; data storage and visualization are carried out; a safety threshold value is preset, a water level prediction model is constructed, water level anomaly detection is carried out, and fault cause tracing and strategy suggestion are carried out on anomaly; equipment linkage is carried out, real-time monitoring and remote automatic control are carried out, and health scoring and service life prediction of the equipment are carried out. The precision and reliability of water level measurement can be improved, timely and effective continuous monitoring and intelligent management are achieved, meanwhile, through cooperation of anomaly detection and automatic control, faults and risks are reduced, geothermal resources are protected, and manpower and operation cost is saved.

The invention provides a pump station water level dynamic boundary adjusting method based on a fuzzy firefly algorithm, which comprises the following steps of: presetting a target water level in an intelligent water level monitoring system, calculating water level deviation and a water level change rate, and determining a sensitive parameter; presetting a linguistic variable of a fuzzy variable to obtain a fuzzy subset about a high-sensitivity parameter, a fuzzy subset about a low-sensitivity parameter, a fuzzy subset about a dynamic boundary adjustment value and a fuzzy subset about a flow adjustment value; determining a corresponding triangular membership function according to the input variables and the output variables of the different sensitive parameters; setting a fuzzy rule, and calculating the membership degree of each input variable; determining the fuzzy quantity output of the dynamic boundary adjustment value according to the fuzzy rule activation condition and the membership function value; and performing precision on fuzzy quantity output of the dynamic boundary adjustment value by adopting a gravity center method to obtain an accurate dynamic boundary adjustment value. According to the invention, the pump station can be controlled more accurately under various dynamic hydrological conditions.

The invention discloses water conservancy project dam settlement real-time monitoring equipment, and belongs to the technical field of water conservancy project dam settlement monitoring. The water conservancy project dam settlement real-time monitoring equipment comprises an intelligent inspection vehicle for movably monitoring dam settlement on a base body around a dam, and the intelligent inspection vehicle is provided with a control box for receiving and transmitting signals and controlling monitoring; a moving seat is slidably mounted on the intelligent inspection vehicle, a moving frame is fixedly connected to the moving seat, and a distance sensor used for monitoring the distance from the dam surface so as to analyze the settlement condition is mounted on the moving frame; an upper steering arm is rotationally connected to the movable frame, a lower steering arm is movably connected to the lower portion of the upper steering arm, and a radar water level gauge used for monitoring the water level change in the dam so as to assist in analyzing dam settlement is fixed to the lower steering arm; the detection equipment can move on the dam to monitor the settlement conditions of different point positions, the distance sensor and the radar water level gauge can be rapidly controlled to be unfolded through the moving frame, the upper steering arm and the lower steering arm, the monitoring range is wide, and use is convenient.

The invention discloses a water conveyance canal lining plate anti-floating stability online intelligent diagnosis and automatic early warning device and method. The device comprises a high-sensitivity water pressure sensor, an automatic water level gauge, a canal section geologic structure parameter acquisition module, a monitoring and diagnosis early warning controller and a remote monitoring terminal. The high-sensitivity water pressure sensor is arranged below the water surface of a first-stage riding track monitoring well of the water conveyance canal, the automatic water level gauge is arranged in inner side canal water, the monitoring and diagnosis early warning controller is in communication connection with the high-sensitivity water pressure sensor and the automatic water level gauge, and the remote monitoring terminal is in communication connection with the monitoring and diagnosis early warning controller. According to the method, the underground water level of the first-level riding track, the water level of the channel and the geological structure parameters of the channel section are collected in real time, an analytic formula method based on Dupuff assumption is innovatively provided for calculating the characteristic water depth of the underground water infiltration line of the channel slope, and the preset critical pressure difference judgment standard is combined; on-line monitoring, intelligent diagnosis and automatic early warning of the anti-floating stable state of the lining plate of the water delivery canal and the replacement fill stratum can be achieved.

The invention provides a radar water level gauge high-stability data processing and measuring method, which comprises the following steps that 1, a radar transmits an electromagnetic wave signal to the water surface, and the electromagnetic wave signal generates an echo when encountering the water surface and is received by a radar receiver; an effective signal and an invalid signal are distinguished by detecting the intensity of the echo signal, when the invalid signal is detected, a communication signal abnormity indication is sent out, and the reflected electromagnetic wave signal is set as original measurement data; step 2, processing echoes generated in the step 1 through an echo signal processing module in the radar receiver, obtaining median filtering processing data through median filtering, synchronously removing random noise through median filtering and reserving effective signals, and improving the stability of a measurement result; a median filtering module is arranged in the echo signal processing module; and step 3, processing the median filtering processing data in the step 2 through a median filtering processing module.

The invention relates to the technical field of water level identification, in particular to a water level calculation method based on triangulation network area weighting. The method comprises the following steps: arranging a plurality of water level observation stations, and recording spatial position coordinates of the water level observation stations; obtaining a time sequence water level observation value of each water level observation station in the observation period; extracting a corresponding instantaneous water level from the time sequence water level observation value according to the sampling time; establishing a triangulation relation according to the spatial positions of the underwater measuring points and the water level observation stations, calculating the area ratio between the underwater measuring points and the adjacent water level observation stations, and automatically reconstructing the triangulation relation and updating the area ratio when the number and the positions of the water level observation stations are changed; according to the invention, accurate identification of the water level of the underwater measuring point is realized through water level calculation, so that the identification accuracy and the calculation efficiency are improved.

The invention discloses an anti-waterlogging early warning device for a transformer substation, which relates to the technical field of flood prevention equipment and comprises a base plate and a vertical shell fixed on the base plate. The support is installed on the vertical shell and used for supporting a monitoring assembly; the water level monitoring module comprises an ultrasonic water level gauge assembled on the vertical shell through a bracket; the data collector and the wireless communication module are assembled on the vertical shell through a mounting shell, and the wireless communication module is used for transmitting monitoring data; and the power supply module comprises a solar photovoltaic panel and a power supply box which are arranged on the vertical shell and are adjustable in angle. According to the anti-waterlogging early warning device for the transformer substation, the problem that key components of an existing anti-waterlogging early warning device are prone to being damaged by external force to cause failure of the device in severe snow and hail weather is solved.

The invention relates to the technical field of measurement, in particular to a float-type water level gauge dynamic compensation detection method which comprises the following steps: collecting float angle sequence data; synchronously acquiring environment disturbance parameters; calculating the floater angle sequence data to obtain a preliminary water level value; constructing a dynamic compensation model, and outputting an inertia force correction term, a fluid damping correction term and a mechanical hysteresis correction term; the inertia force correction term, the fluid damping correction term and the mechanical hysteresis correction term are multiplied by corresponding weight factors respectively, then algebraic sum is solved, a total compensation amount is obtained, and the weight factors are dynamically adjusted and normalized according to the current wave high energy spectral density, the wind speed gradient change rate and the water temperature viscosity correction coefficient; and deducting the total compensation amount from the initial water level value, and outputting a final compensated water level value. According to the method, the problems of poor multi-physical field sensing capability and poor online parameter identification capability of a compensation method in the prior art are solved.

The invention discloses a reservoir capacity calculation method and system based on hydrodynamic simulation and non-uniform coefficient correction, and belongs to the technical field of water resource management, and the method comprises the steps: carrying out the grid division of a research region; constructing a hydrodynamic model based on topographic data, hydrological data and atmospheric data of a research area, and calculating a real-time water level; introducing a ratio between the actually measured water level and the simulated water level, and calculating a non-uniform coefficient; correcting the hydrodynamic model by using the non-uniform coefficient on the basis of hydrodynamic model calculation to obtain a corrected water level; and calculating the water volume of each grid based on the corrected water level, and accumulating the water volumes of all the grids to obtain the storage capacity. According to the method, the area of the regional grid is extracted through Arcgis software, and dynamic correction of the non-uniform coefficient is introduced, so that the storage capacity calculation precision is effectively improved.

The invention provides a rectangular open channel automatic flow measurement method and system based on multi-flow-layer water flow pressure monitoring, electronic equipment and a storage medium, and the method comprises the steps: measuring the water level information of a to-be-measured drainage basin in real time through an ultrasonic water level gauge; dividing the flow section of the rectangular open channel in the to-be-detected drainage basin into a plurality of flow layers from bottom to top; according to the water level information, the hydrodynamic pressure value of each flow layer in the flow cross section is calculated, and the hydrodynamic pressure value is converted into the water flow velocity value of the corresponding flow layer; calculating the flow of each flow layer based on a flow velocity area method according to the water flow velocity value, and accumulating the flow of each flow layer to obtain the flow of the rectangular open channel; the method has the advantages that manual intervention is not needed, operation is easy, high applicability and real-time performance are achieved, cost is low, high-cost equipment does not need to be used, the measuring effect is accurate, and the method can be suitable for the complex fluid flowing environment; the method is suitable for the rectangular open channel flow measurement field.

The present invention discloses a method for detecting water leakage at the milling joint, which uses a controller, a plurality of wire reels, a water level gauge, a transmitting transducer, a first receiving transducer and a measuring tube. The distance between the joint of adjacent diaphragm wall segments and the two adjacent measuring tubes on both sides is equal. The transmitting transducer and the first receiving transducer move up and down in the measuring tubes on both sides of the joint to be detected through the corresponding wire reels respectively. When the transmitting transducer and the first receiving transducer move up a certain distance each time and the corresponding water level gauges are at the same horizontal height, the transmitting transducer emits ultrasonic signals, and the first receiving transducer receives ultrasonic signals. The first acoustic signal parameter curve along the depth direction of the joint area between the first segment and the second segment is drawn based on the ultrasonic signals received by the first receiving transducer. According to the acoustic signal parameter curve, the position of the water leakage defect section and the degree of the water leakage defect at the joint of adjacent diaphragm wall segments can be quickly and effectively judged.

The utility model discloses a water conservancy surveying water level gauge which comprises a bottom plate, a base is arranged below the bottom plate, a fixing bolt penetrates through the upper portion of the bottom plate, a supporting frame is fixed to the upper portion of the bottom plate, a motor is installed above the supporting frame, a lead screw is installed in the supporting frame, and a sliding block is installed on the outer side of the lead screw. According to the water conservancy surveying water level gauge, through cooperative use of the supporting frame, the motor, the lead screw, the sliding block and the cross rod, the motor drives the lead screw to rotate and drives the sliding block to slide on the outer side of the lead screw, the cross rod can be driven to move up and down, and therefore the height of the radar water level gauge is adjusted, and the distance between the radar water level gauge and the water surface is kept at a proper height; the radar water level gauge is prevented from being submerged when the water level of a river is too high, and when the radar water level gauge is submerged, radar beams may be interfered by impurities, bubbles and other factors in a water body, signal attenuation is caused, and the measurement precision is influenced, and the water level exploration precision can be ensured.

The application discloses a redundant measurement value transmitting method for a single measuring point water level gauge of a ship lock chamber. The method comprises the following steps: simultaneously detecting the water level of a certain measuring point in the ship lock chamber by N water level gauges, obtaining multiple water level detection values of the measuring point at a certain time; determining a water level deviation threshold G2 of the measuring point and a detection value deviation threshold G3 of the multiple water level gauges according to a ship lock chamber water level change threshold G1 and a water level gauge detection range R; comparing the multiple water level detection values Vn of a certain measuring point with the determined water level deviation threshold G2 of the measuring point; performing difference value operation on the obtained reasonable water level detection value Vm; selecting N1 water level detection values as the water level detection basic data of the measuring point, performing secondary processing, and obtaining the water level detection effective value Ve of the measuring point. The application discloses a redundant measurement value transmitting method for a single measuring point water level gauge of a ship lock chamber. The ship lock single measuring point adopts multiple water level sensors for redundant detection, voting verification, error processing and detection value transmission of multiple detection values, and reliable and stable water level data is provided for the system.

The application relates to the technical field of hydrological monitoring and discloses an intelligent hydrological monitoring system based on Internet of Things, which comprises an upper computer, a flow measurement control platform, a network communication module, a PLC controller, a mechanical system and a flow measurement system. The flow measurement control platform respectively instructs the PLC controller and the flow measurement system through the network communication module. The flow measurement system is used for acquiring hydrological monitoring data and uploading the flow measurement control platform. The flow measurement system comprises an ADCP flow measurement, a radar flow measurement, a time-difference method ultrasonic flow measurement, a propeller current meter and a field water level meter. The flow measurement system selects a flow measurement method according to needs at different measuring point positions in the same section to jointly measure the flow. The flow measurement system is equipped with multiple flow measurement methods and is uniformly controlled and dispatched by the flow measurement control platform, so that the monitoring system has good expandability. On this basis, a corresponding flow measurement scheme can be automatically generated according to different water level levels, the advantages and disadvantages of various flow measurement methods are complementary, and the detection precision is further improved.

The invention relates to an open channel clogging real-time diagnosis system and method based on voiceprint and flow velocity fusion, and the method comprises the steps: a plurality of monitoring nodes are arranged along an open channel, the monitoring nodes are arranged at intervals according to the length of the channel, the terrain and the conditions of easy-to-deposit sections, and each monitoring node at least comprises an underwater sound sensor installed underwater on the side wall of the channel, the ultrasonic Doppler flow velocity sensor is installed at the position about 0.3 m underwater on the side wall of the channel, and the pressure type water level gauge is installed at the bottom of the channel and used for measuring the water level. According to the invention, various sensors are used for continuously monitoring the operation state of the open channel for 7 * 24 hours, and a multi-source information fusion acquisition mode is adopted, so that abnormal signals can be detected at the initial stage of clogging, intelligent diagnosis can be carried out, the clogging position can be positioned, early warning can be given out, and the inspection is more timely than manual inspection. And timely early warning and rapid positioning are helpful for the management department to take measures as soon as possible, so that small problems are prevented from being evolved into large dangerous cases, and safe operation of the channel is guaranteed.

The invention discloses a hydraulic engineering full life cycle digital management method and system based on wireless communication, and relates to the technical field of hydraulic engineering. And in cooperation with multi-mode sensing equipment such as a flow meter, a pressure sensor, a water level gauge and a temperature sensor, real-time continuous monitoring of key physical parameters in the deposition migration process can be achieved. Multi-point acquisition data is efficiently transmitted back to a central platform through a wireless communication module, and data preprocessing mechanisms such as timestamp alignment, feature extraction and dimensionless processing are combined, so that the alignment precision and calculation consistency of multi-temporal-spatial-scale heterogeneous data are remarkably improved, and a standard data set with a general analysis basis is constructed. The integrated sensing, communication and preprocessing integrated process breaks through the defects of coarse granularity and low timeliness of traditional turbidity data.

The invention discloses a device and a method for measuring a vertical permeability coefficient of soil. The device comprises a water injection vertical pipe, a pressure guide pipe, a water level gauge, a water storage sleeve system and a soil accommodating cavity, wherein the pressure guide pipe sleeves the water injection vertical pipe and is connected with the water level gauge; the water storage sleeve system comprises a water outlet, a sleeve and a ventilation pipeline, the water outlet, the ventilation pipeline and a pressure guide pipe are contained in the sleeve, the top of the ventilation pipeline is sealed, the bottom of the ventilation pipeline is open, the upper end and the lower end of the water outlet are open, and the distance between the bottom of the water outlet and the bottom of the sleeve is smaller than that between the bottom of the ventilation pipeline and the bottom of the sleeve. The sleeve is also provided with an exhaust port and a water injection port; the soil containing cavity comprises an outer pipe and an inner pipe which are concentric and open up and down, the inner pipe is located in the outer pipe, the water injection vertical pipe is communicated with the inner pipe, and the projection of the ventilation pipeline in the soil containing cavity is located between the outer pipe and the inner pipe. The device is high in integration degree, convenient to carry and capable of being moved to an adjacent place at any time for multiple experiments.

The present application relates to the field of safety monitoring of waste landfill, and proposes a layered leachate water level monitoring method. The method first determines the position, thickness and number of the middle soil layer in the landfill through exploration drilling, and then embeds monitoring holes in the garbage pile under each soil layer to realize layering. After a week of observation to confirm the sealing and water level stability, the steel ruler water level meter is used to measure the leachate water level of each monitoring hole. The distance from the water level surface to the pipe opening is determined by taking the average value of three repeated measurements, and the water level elevation is obtained by combining the leveling measurement. By comparing the water level elevations measured twice, the water level change value is obtained, and the cumulative change value is obtained by comparing with the first measurement. The method can intuitively, quickly and accurately measure the leachate water level on each layer of soil, analyze the occurrence form and continuity of leachate, and evaluate the stability of the garbage pile.

The invention relates to the technical field of water level measurement, in particular to a radar water level meter mounting rack, which comprises a mounting assembly, a water level meter, a water level meter, a water level meter, a water level meter, a water level meter and a water level meter, the adjusting assembly is arranged on one side of the cross beam and comprises an angle adjusting part arranged at the bottom of the cross beam and a displacement adjusting part arranged between the cross beam and the water level gauge mounting seat; the angle adjusting part comprises a bottom plate connected to the bottom of the support and the bottom of the cross beam and a supporting seat arranged at the bottom of the bottom plate, and the bottom plate is rotationally connected with the supporting seat. According to the invention, through mutual cooperation between the installation assembly and the adjusting assembly, the distance between the water level gauge and the maintenance position can be adjusted, and through arrangement of the anti-inclination assembly, the problem of large measurement error caused by inclination of the water level gauge is solved.

The present invention discloses a reservoir water level observation platform structure that comprehensively utilizes a diversion tunnel, including a water body communicator and a water level measurement structure; the water body communicator includes a blocking gate, a permanent blocking body, an upstream cavern, and a water inlet device for the diversion tunnel; the water level measurement structure includes a borehole logging, a float-type water level gauge, an integrated service device, and a water level observation building. The present invention utilizes the upstream cavern after the diversion tunnel is permanently blocked as a communicator between the reservoir and the borehole logging, solving the problems of high cost and long construction period of shore-tower water level observation platforms and easy siltation and poor connectivity of borehole-type water level observation platforms. It can significantly shorten the construction period and save investment, and has good practicality and economy. The present invention facilitates review and maintenance, ensuring the stability and effectiveness of reservoir water level monitoring.

The utility model discloses a water level detection assembly, and relates to the technical field of water level detection equipment. The radar water level gauge comprises a radar water level gauge body and a fixing rod, a mounting plate is arranged on the outer side surface of the radar water level gauge body, a concave groove is formed in one side of the fixing rod, a sliding plate is arranged in the concave groove in a sliding mode, an assembling assembly is arranged on the side, close to the radar water level gauge body, of the sliding plate, and the assembling assembly is detachably connected with the mounting plate. According to the utility model, the mounting plate and the mounting block can be assembled together, then the bolt can be inserted into the corresponding through hole, the mounting plate and the mounting block are assembled together by matching with the nut, and then the mounting block can be inserted into the connecting hole, so that the mounting plate and the mounting block can be assembled together, and the mounting plate and the mounting block can be assembled together. The double-end lead screw can rotate through the round block by rotating the rotating disc, the positioning block enters the positioning groove, the mounting plate can be mounted, and when dismounting is needed, the ratchet is shifted, and then the rotating disc is rotated.

The invention discloses an automatic monitoring and cleaning system and method for distributed reservoir branch blocking door sand, and belongs to the technical field of water conservancy projects. The system comprises a distributed energy module, a water pumping and desilting module, a monitoring module, a gate dam regulation and control module and a control module. Energy is provided through photovoltaic and wind power generation, pumping and desilting are conducted through a pump station or a pump ship connected through a flexible pipeline, and a spiral spring or a spiral protrusion or other anti-blocking devices are arranged at a pump inlet. The monitoring module monitors the water level difference and the flow velocity in real time through a radar water level gauge and a flow measuring camera. The gate dam regulation and control module comprises an assembled water and sediment retaining dam, a double-layer gate system and a movable crane. The control module automatically controls directional scouring and gate opening and closing according to monitoring data. Automatic monitoring, accurate cleaning and hydraulic breaking of the blocking door sand are achieved, the dredging efficiency is effectively improved, and communication of main and branch reservoir capacities of a reservoir is guaranteed.

The present invention discloses a method and device for calculating the drum water level in both cold and hot operating conditions. By establishing a calculation formula for the drum water level in the cold state and a method for determining whether the two conditions are hot or cold, the method automatically switches between the cold and hot state calculation formulas. This avoids the inaccurate measurement of differential water level gauges before the drum enters the hot state, facilitating full-time monitoring of the drum water level by unit operators.

The utility model relates to the technical field of underground water level observation, and discloses a hydrogeological exploration underground water level observation device which comprises a water level gauge body and a mounting frame connected to the outer wall of the water level gauge body. According to the water level gauge, the protective cover is arranged on the water level gauge body, the water level gauge body which is not used can be protected by the protective cover, the elastic cushion layer is arranged on the inner side of the protective cover, impact force generated when the protective cover is collided can be effectively absorbed, damage is effectively avoided, and the water level gauge body cannot be accidentally collided and damaged when being carried outdoors; the protective cover is rotationally connected, when the water level gauge body is used, opening and closing can be achieved only in a rotating mode, and operation is easy and practical.

This invention discloses an integrated slope-fitting truss-type water level gauge installation device for open channels in the field of water monitoring technology. It aims to solve the problems of existing water level gauge installation devices, which are typically fixed to the top of a slope. Due to significant water level fluctuations, it is inconvenient to adjust the distance between the water level gauge and the water surface, and the structural stability of the installation device is poor, making it susceptible to deformation due to wind. The device includes a slope, a guide rail, and two slope-fitting trusses. The slope-fitting trusses are slidably connected to the guide rail via a sliding mechanism. A positioning mechanism is provided at the top of the guide rail. Both slope-fitting trusses are rotatably connected to a connecting shaft. A base is provided at the top of the connecting shaft, and the water level gauge is mounted on the base. This invention uses the slope-fitting trusses to move the water level gauge closer to or further away from the guide rail, making the water level gauge suitable for monitoring different water levels. Furthermore, the guide rail, slope-fitting trusses, and connecting shaft form a triangular shape during operation, resulting in structural stability and minimal deformation.

The utility model relates to the technical field of water conservancy parameter monitoring, in particular to a water conservancy flood control early warning device, and aims to solve the problem that a rain gauge in existing water conservancy flood control early warning is high in cost. The device comprises a water level gauge and a rain gauge, the rain gauge comprises a rainfall collector, a first tipping bucket, a second tipping bucket and a switching structure, the lower end of the rainfall collector is open, and the volume of a second metering groove of the second tipping bucket is larger than that of a first metering groove of the first tipping bucket; the switching structure comprises a switching driving assembly and a drainage piece, the drainage piece has a first state and a second state, and the switching driving assembly is used for switching the drainage piece between the first state and the second state. Under the condition of small rainfall, the drainage piece is in a first state, and rainwater in the rainwater collector is drained to the first tipping bucket; and under the condition of large rainfall, the switching driving assembly is started to drive the drainage piece to be in the second state, and rainwater in the rainwater collector is drained to the second tipping bucket, so that the rainfall measurement accuracy is improved.