204 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 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 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 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 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.

The present application relates to the technical field of pumped storage, in particular to a pumped storage power station water energy parameter calculation method and device based on machine learning. The method determines the reservoir storage curve coefficient and the corresponding water level data as input and output samples to train a preset machine learning model. The water level calculation model trained in this way can quickly calculate the water energy parameters of the pumped storage power station, avoiding the problem of low calculation efficiency and long time consumption caused by iterative calculation of various optimization models one by one in related technologies. At the same time, when determining the reservoir storage curve coefficient, the reservoir storage curve constraint is considered, which can reduce the calculation amount and avoid the inaccuracy caused by random determination of the coefficient. In addition, the penalty constraint determined by the water level data is added to the loss function used in the model training, which can quickly correct the prediction direction in the training process, and finally output the water level parameters that meet the actual engineering requirements.

The invention provides a self-adaptive dual-mode flow metering device and method for a riverway ecological water replenishing recharge well, and relates to the technical field of hydrological monitoring. The device monitors the water level in the well in real time by arranging a second water level sensor, and a control unit intelligently judges whether the current recharge working condition is a water falling working condition or a full pipe flow working condition according to the water level information; further, a volume method or a flow velocity method is autonomously selected for flow measurement, and continuous, accurate and automatic monitoring of the flow under the full-working-condition operation condition of the recharge well is achieved; under the water drop working condition, the electric on-off valve is closed to accumulate water flow in the cylindrical measuring cylinder, and the average flow is calculated based on the water level in the cylinder measured by the first water level sensor; under the full pipe flow working condition, the valve is kept open, and the instantaneous flow is calculated based on the section average flow velocity measured by the Doppler flow meter; and due to automatic switching of the two modes, the reliability and adaptability of flow monitoring of the recharge well in a complex dynamic environment are remarkably improved.

The application discloses a kind of float type water level gauge automatic calibration system, it is related to automatic calibration technical field, and the system includes man-machine interaction module, power drive and control module, signal interaction module, mechanical execution and transmission module, power guarantee module, environmental perception and data acquisition module, intelligent maintenance and fault prediction module and core control module;Real-time receive water level value, adjust the speed, steering and position of servo motor, to adjust water level gauge, complete the calibration process of water level gauge, real-time acquisition water level, ambient temperature, atmospheric pressure and water quality parameter, carry out fault prediction analysis, build component performance degradation model and judge potential fault, when component performance is normal, water level gauge is dynamically adjusted, the application accurately adjusts servo motor by power drive and control module, enhances the automation degree of water level gauge adjustment, predicts the remaining life of execution component in advance, so that maintenance personnel can formulate maintenance plan in advance, avoid the influence of fault on water level monitoring.

The application discloses a water level difference monitoring device for water environment monitoring and belongs to the technical field of water level difference monitoring. In order to solve the problem that a radar water level gauge is easily affected by airflow and shakes, thereby affecting monitoring accuracy, the application comprises a fixing rod, a support assembly is fixedly arranged at the top of the fixing rod, a driving assembly is arranged in the support assembly, a first connecting assembly and a second connecting assembly are slidably arranged in the driving assembly, an angle compensation assembly is arranged at the bottom of the second connecting assembly, a radar water level gauge is arranged on one side of the angle compensation assembly, the radar water level gauge is used for water level monitoring, a detection assembly is arranged at the bottom of the support assembly, and the detection assembly can detect height deviation and angle deviation data in real time. The application is convenient for dynamically adjusting the use height and angle of the radar water level gauge, improves monitoring accuracy, is convenient for blocking waterweeds, garbage and impurities from entering the monitoring range of the radar water level gauge, and avoids interference of impurities on radar signal emission and reception.

The utility model discloses a riverway water level gauge for water environment monitoring, which comprises a stand column, a supporting shell is fixedly arranged on the stand column, the riverway water level gauge further comprises a supporting plate, a radar water level gauge, a cleaning seat, a moving mechanism and a cleaning mechanism, the supporting plate is arranged on the supporting shell in a sliding mode, and the radar water level gauge is fixedly arranged on the supporting plate. The cleaning seat is fixedly arranged at the end, away from the stand column, of the supporting shell, a cleaning groove is formed in the cleaning seat, the moving mechanism is arranged in the supporting shell and used for controlling the supporting plate to move, and the cleaning mechanism is arranged in the cleaning groove and used for cleaning the bottom face of the radar water level gauge. The riverway water level gauge for water environment monitoring solves the problem that dust is attached to the surface of a water level gauge in the prior art, so that the measurement precision is affected.

The application discloses a water depth inversion method and device, a nonvolatile storage medium and an electronic device. The method comprises the following steps: acquiring historical remote sensing image data and historical ground water level gauge data in a target area; inputting a second historical radiation brightness value into a physical model to obtain predicted water depth information output by the physical model; correcting the predicted water depth information by using second historical real water depth information, and updating the physical model according to a correction result to obtain a target physical model; and inputting a current radiation brightness value into the target physical model to obtain target predicted water depth information output by the target physical model. The application solves the technical problem that the accuracy of an inversion result is low when a satellite remote sensing technology is used to perform large-range water depth inversion, due to the influence of factors such as clouds, atmosphere and surface types.

The utility model relates to the technical field of foundation pit engineering, in particular to a foundation pit engineering monitoring device which comprises a water level monitoring pipe, a pre-buried seat arranged at the lower end of the water level monitoring pipe, a foundation pit body arranged on the periphery of the pre-buried seat, a water level gauge inserted into the water level monitoring pipe, a monitoring rod arranged on the water level gauge and a sealing table arranged on the water level monitoring pipe. A locking groove and an inner extrusion sealing frame are arranged on the sealing table, a sealing cover is arranged on the monitoring rod, a sliding hole and an outer extrusion sealing frame are arranged on the sealing cover, a locking column is connected into the sliding hole in a sliding mode, a spring is arranged on the locking column, and a connecting disc is arranged on the locking column. The effective comprehensive inner and outer double-layer extrusion sealing sleeving effect of the insertion part of the water level gauge and the water level monitoring pipe is achieved, the situation that the underground water level value, monitored by the water level gauge, in the foundation pit body is not accurate is avoided, the convenience of installing the water level gauge in the foundation pit body to the water level monitoring pipe is improved, and the damping magnetic attraction stability after the locking column is clamped into the locking groove is improved.

The present application relates to the technical field of measurement, and more particularly to a dynamic compensation detection method for a float type water level meter, which comprises: collecting float angle sequence data; synchronously collecting environmental disturbance parameters; performing calculation on the float angle sequence data to obtain a preliminary water level value; constructing a dynamic compensation model to output an inertial force correction term, a fluid damping correction term and a mechanical hysteresis correction term; multiplying the inertial force correction term, the fluid damping correction term and the mechanical hysteresis correction term by corresponding weight factors respectively, and then obtaining an algebraic sum of the three terms to obtain a total compensation amount, wherein the weight factors are dynamically adjusted according to the current wave height energy spectrum density, the wind speed gradient change rate and the water temperature viscosity correction coefficient, and are subjected to normalization processing; and deducting the total compensation amount from the preliminary water level value to output a final compensated water level value. The present application solves the problems of poor multi-physical field sensing ability and poor online parameter identification ability of the compensation method in the prior art.

The invention discloses an anti-floating control method and system for sudden change of underground water level, and relates to the technical field of water level detection control, and the method comprises the steps: connecting a real-time sensing module, and obtaining the underground monitoring water level of a target area; calculating a real-time numerical value of the buoyancy applied to the underground structure, and determining an anti-floating safety coefficient; setting an underground water level sudden change judgment standard, and if the water level change curve reaches a judgment threshold value, determining an anti-floating early warning level; matching an anti-floating regulation and control device to search an anti-floating linkage range and an anti-floating strategy to obtain an anti-floating execution strategy; and an anti-floating control instruction is generated, and the anti-floating regulation and control device is controlled. The technical problems that in the prior art, underground water level dynamic change real-time sensing is insufficient, buoyancy calculation is lagged, and anti-floating early warning and regulation are disjointed are solved, and the purposes of monitoring water level change in real time, dynamically calculating structural buoyancy, intelligently matching an anti-floating strategy and automatically regulating and controlling are achieved. And the technical effects of anti-floating safety and emergency response capability of the underground structure under complex hydrological conditions are improved.

The invention discloses a desilting and draining device of a cable trench, a control method and a control device of the desilting and draining device. The desilting and draining device of the cable trench comprises a cyclone separator, a sewage pump, a water level gauge, a turbidity sensor, a rain gauge and the control device. The cyclone separator is arranged in the cable trench, the cyclone separator is provided with a water outlet and a drain outlet, and the cyclone separator is used for separating accumulated water entering from the water inlet and discharging the separated accumulated water through the water outlet and the drain outlet. The sewage pump is communicated with the sewage outlet, the water level gauge is arranged in the cable trench and used for detecting the water level value in the cable trench, the turbidity sensor is arranged in the cable trench and used for detecting the turbidity value of accumulated water, and the rain gauge is arranged in the cable trench and used for detecting the rainfall value in the cable trench. The control device is used for controlling the sewage pump to operate based on at least one of the water level value, the turbidity value and the rainfall value. Solid-liquid graded discharge and automatic desilting of accumulated water are achieved, and the intelligent degree of desilting and drainage is improved.

The utility model belongs to the technical field of water level monitoring, and discloses a channel water level monitoring device which comprises an ultrasonic water level gauge, an anti-collision mechanism is arranged on the ultrasonic water level gauge, the anti-collision mechanism comprises a cross rod, a pulley capable of rotating when collided is installed at the front end of the cross rod, and a pressed spring capable of being bent when collided is arranged behind the cross rod. Compared with the prior art, the ship anti-collision device has the following advantages that when the ship anti-collision device is designed, the pulley rotates to change the stress direction, and scraping destructive force is resolved; if the ship accidentally collides with the side face of the cross rod, the compressed spring is bent to absorb impact force; the transverse rod rotates to drive the auxiliary block to rotate along the top ring groove to stabilize the position of the transverse rod; if the ship collision direction is right ahead the horizontal position of the cross rod, when linear collision extrusion force arrives, the buffer plate enables the buffer spring to be compressed to slowly release the extrusion force, and the risks of deformation and damage of the device are reduced.

The invention relates to the field of agricultural irrigation monitoring, and provides a crop area water level determination method and device and a storage medium. The determination method comprises the following steps: generating a digital elevation model of a crop region, wherein the crop region comprises a plurality of sub-regions; determining elevation data of each sub-region from the raster data of the digital elevation model based on a predefined field boundary vector diagram to obtain elevation matrix data of each sub-region; performing visualization processing on the elevation matrix data of each sub-region to generate an elevation distribution diagram, and marking pixel points of a preset elevation in the elevation distribution diagram; determining a target mounting position of the water level gauge based on the elevation distribution diagram; acquiring water level data acquired by a water level gauge and elevation data at a target mounting position; and determining a water layer coverage area proportion and / or an average water layer height in the crop area based on the digital elevation model, the water level data and the elevation data at the target installation position. The method can provide accurate irrigation decision support for crops.

The invention belongs to the technical field of flood forecasting, and particularly relates to a method for calculating post-wave water level by sudden flood forecasting flow, which comprises the following steps: S1, acquiring hydrological observation and flow forecasting data, and determining a calculation control node; s2, calculating a first adaptive flow and a first water level before the node 2; s3, calculating a first adaptive flow and a first water level behind the node 2; s4, calculating a second adaptive flow and a second water level before the node 2; s5, calculating a second adaptive flow and a second water level after the node 2; s6, according to the first adaptive flow, the first water level, the second adaptive flow and the second water level, the water surface gradient process is calculated; and S7, outputting a post-wave water level forecast calculation result according to preset data submission ending time. According to the method, two post-wave flood indicating flow hydrographs and corresponding water level hydrographs can be generated, and the technical level of post-wave water level forecasting of the flood is effectively improved.