65 results about "Current meter" patented technology

The invention relates to a lightning arrester leakage ammeter self-calibration method and system, and the method comprises the following steps: disconnecting a main leakage ammeter from an external main measurement loop, and closing a calibration loop of a redundancy calibration sensor and a reference current source after a preset time is delayed; controlling a reference current source to output standard signals with different current magnitudes, collecting the standard signals by using a redundancy calibration sensor, extracting effective signal components, and performing environment compensation; iteratively calculating a relative error between the effective signal component and the standard signal, if the relative error is less than or equal to a second threshold value, updating a calibration coefficient according to a ratio of the standard signal to the effective signal component, and correcting a measurement result of the main leakage ammeter based on the calibration coefficient; if the relative error is greater than a third threshold value, locking output and uploading fault information; otherwise, recording as one exception, and carrying out maintenance early warning according to the number of exceptions. Compared with the prior art, the self-checking and real-time calibration of the leakage ammeter of the lightning arrester can be completed on the premise of not influencing the operation of power equipment.

Systems and Methods for capacitance testing of a unit under test with parasitic capacitance directed to a guard rail. The system includes test points, wherein the plurality of test points are divided into at least two groups; a stimulus source; a first group guard relay electrically connected to each of the test points in a first; a second group guard relay electrically connected to each of the test points in a second; a guard rail coupled to the first group guard relay and the second group guard relay; a first group return relay electrically connected to each of the test points in a first group; a second group return relay electrically connected to each of the test points in a second group; a current measurement rail coupled to the first group return relay and the second group return relay; a current meter coupled to the measurement rail; and a controller.

The embodiment of the invention relates to an electricity meter data complementary reading method, which is applied to a concentrator terminal and comprises the following steps: sending a data reading instruction to all electricity meters according to a preset physical address sequence at the beginning of each preset meter reading period; if the effective collection data fed back by the electricity meter is not received within the preset overtime threshold value, establishing a collection missing queue according to the electricity meter information, the data information and the time information; and in the current meter reading period, after the current round of data acquisition is completed, calculating the residual idle time of the current meter reading period and the estimated single-time additional reading time consumption, and performing data additional reading according to the residual idle time of the current meter reading period and the estimated single-time additional reading time consumption. According to the technical scheme provided by the embodiment of the invention, the data which is not successfully acquired is subjected to supplementary reading by utilizing the remaining time of the current meter reading period and the subsequent meter reading period, a layered priority supplementary reading mechanism is provided, the timeliness and fairness of data supplementary reading are considered, and the loss risk of long-term missing acquisition of data can be avoided.

The invention discloses a flow field adaptive calculation method and system based on an acoustic Doppler flow meter. Comprising the following steps: acquiring original frequency spectrum data and synchronous attitude, position and water level information of a Doppler current meter; performing preprocessing and quality marking on the original data; multi-dimensional features are extracted, and a current dominant flow field type is identified through a pre-trained flow field classification model; adaptively selecting a flow velocity profile reconstruction algorithm according to the flow field type, and dynamically adjusting key algorithm parameters according to flow field stability or turbulence intensity parameters in the reconstruction process; a calculation grid is dynamically generated based on a flow velocity field of a reconstruction strategy to perform flow integral calculation, and data, a model and an integral error are comprehensively evaluated to quantify uncertainty of an output flow result; and finally performing flow field abnormity diagnosis, short-term flow trend prediction and equipment health state early warning. According to the method, the problem of insufficient precision of a traditional fixed algorithm in a complex flow field is solved, and the reliability and the intelligent level of flow monitoring are remarkably improved.

The invention relates to an open boundary circulating flow and reconfigurable terrain collaborative maritime work scouring intelligent test system and test method, a maritime work structure test model is installed at the center position of a main body structure inner cavity test section, and a set area with the maritime work structure test model as the center is used as a main test section; the open-boundary circulating flow generation system realizes back supplement and closed-loop operation of circulating water channels of the left bank and the right bank; a multi-beam three-dimensional terrain scanner is installed on the side portion of the large-span electric measuring bridge system, and sand bed terrain and scour pit three-dimensional shape data are obtained; a three-dimensional acoustic Doppler current meter and a capacitive wave height meter are installed on the track type instrument bridge measuring system, and multi-dimensional dynamic monitoring is conducted on the sand bed terrain and the scouring pit; the multidirectional irregular wave generation system is used for simulating regular waves and irregular waves in an offshore environment. According to the invention, the aspects of structure scale, terrain coupling and measurement and control feedback intelligence are comprehensively upgraded, and a more real and reliable test basis with strong engineering adaptability is provided for research on scouring stability of major ocean engineering.

The invention provides an offshore wind power pile foundation scouring real-time monitoring system which comprises an underwater camera, a rotatable scanning sonar, a single-point flow velocity meter, an acceleration sensor, a fiber grating sensor and a data processing transmission unit which are cooperatively used. Synchronous monitoring of the seabed terrain around the pile, the scour depth and range, the ocean current flow velocity and flow direction and the pile foundation vibration response acceleration signal and strain signal is achieved; the data processing and transmitting unit completes collection and fusion analysis of multi-source data and transmits a monitoring result to a land monitoring station in real time. According to the system, collaborative real-time monitoring of multi-element parameters of ocean current-scoured terrain-structural response is achieved, the dynamic evolution law of the seabed terrain is accurately mastered, a dual verification mechanism of directly detecting the scour depth by scanning sonar and inversing the scour depth by structural vibration response is adopted, the scour depth monitoring precision can be greatly improved, and the real-time performance of the system is improved. And reliable data support is provided for long-term safe operation, structural health assessment and scouring protection design of the offshore wind turbine.

The invention discloses a detection device and a detection method for structural defects of a full-water drainage pipeline. The detection device comprises a ground operation unit and an underground detection unit, wherein the ground operation unit comprises a handheld flow velocity display and a sonar operation feedback platform, and the handheld flow velocity display and the sonar operation feedback platform are in signal connection with the underground detection unit through a flow velocity meter data transmission line and a sonar data transmission line respectively; the underground detection unit comprises a Doppler current meter, a two-dimensional surface real-time image sonar and a cross-shaped fixed rod head, the cross-shaped fixed rod head is used for integrating and fixing the Doppler current meter and the two-dimensional surface real-time image sonar, and the detection unit is deployed in a full-water operation drainage system; the two-dimensional surface real-time image sonar can adjust the sound wave frequency, identifies the structural defect of the pipeline through the sound wave reflection difference, and transmits the defect information to the sonar operation feedback platform; the Doppler current meter is used for collecting flow velocity and flow data in the pipeline and transmitting the data to the handheld flow velocity display, and the defect position is checked in an auxiliary mode through multi-well-position data comparison.

The invention provides a flow velocity meter and a frequency adaptive adjustment method thereof, and the method comprises the steps: determining an effective frequency bandwidth of flow velocity data under a current working condition through obtaining the flow velocity data collected by a flow velocity sensor; calculating the target sampling frequency of the flow velocity meter based on the effective frequency bandwidth and the flow state change period of the medium in the water resource treatment pipeline; the current flow state category and the working condition stability level are judged based on the collected temperature, pressure and flow combined change characteristics; finally, the target sampling frequency is adjusted according to the current flow state category, the frequency adjustment amplitude is enhanced according to the working condition stability level, the adjusted sampling frequency serves as the measurement frequency of the flow meter to be output, and the steps are periodically repeated to achieve self-adaptive updating of the measurement frequency. According to the scheme, adaptive optimization of the measurement frequency can be realized, and the measurement precision is improved.

The invention discloses a wading rigid bridge cofferdam stability real-time monitoring method based on multi-source sensing, and belongs to the technical field of bridge construction safety monitoring. According to the method, a structure-hydrological multi-source sensor is arranged, and displacement, strain, scouring and water flow data are collected in real time through a cofferdam top receiver, a main rib fiber grating sensor, a base osmometer, a multi-beam depth finder and a current meter; and reversely correcting cofferdam material parameters based on a digital twinborn model, dynamically calculating an anti-sliding coefficient and an anti-overturning coefficient, predicting a deformation trend in combination with an LSTM neural network, and setting first-level early warning and second-level early warning. According to the method, the problems of lagging of traditional monitoring data, limitation of single-dimensional analysis and high false alarm rate of an empirical threshold are solved, short-time instability risk identification is realized, and the false alarm rate is reduced at the flow velocity gt; accurate monitoring is kept in a 3m / s torrent environment, and the safety of deepwater construction is remarkably improved.

The invention relates to the technical field of hydrological monitoring, and provides a hydrological total-factor monitoring buoy and a using method thereof.The hydrological total-factor monitoring buoy comprises a hull-shaped buoy body, the overall length of the hull-shaped buoy body is 3 m, a cabin is arranged in the bow of the hull-shaped buoy body, and a wide-angle groove is formed in the bottom of the stern of the hull-shaped buoy body; an ADCP installed in the wide-angle groove of the hull-type buoy main body; a multi-element integrated design is adopted, core modules such as an ADCP (flow velocity monitoring), a Beidou GNSS (water level and positioning), an online sand meter (sand content monitoring), a solar power supply system and the like are integrated in the hull-shaped buoy main body, an integrated monitoring platform is formed, the repeated construction cost is reduced, and the construction efficiency is improved. Compared with the prior art that facilities such as a water gauge, a flow meter and a sediment measuring station need to be independently deployed in traditional monitoring, multi-parameter synchronous monitoring is achieved through integrated design, repeated hardware investment is reduced, the maintenance difficulty caused by equipment dispersion is reduced through centralized management, and the system is suitable for remote or complex water area environments.

The utility model relates to the field of current meter fixing supports, in particular to a hydrological survey current meter positioning and fixing device, and adopts the technical scheme that the hydrological survey current meter positioning and fixing device comprises an annular supporting table, a lifting cylinder, a distribution box, a photovoltaic power generation panel, a lightning rod, an electric cylinder, an external limiting cylinder, a supporting rod and a top platform, the upper end of the annular supporting table is fixedly connected with a lifting barrel, four sets of sliding grooves distributed around the lifting barrel at equal intervals are formed in the outer wall of the lifting barrel, and an electric cylinder is installed on the inner wall of the lifting barrel. Compared with an original supporting frame body, a worker can conveniently adjust the detection height of the current meter according to needs, and the current meter can be lowered to a low position during maintenance so that the worker can maintain the current meter.

Systems and Methods for capacitance testing of a unit under test with parasitic capacitance directed to a guard rail. The system includes test points, wherein the plurality of test points are divided into at least two groups; a stimulus source; a first group guard relay electrically connected to each of the test points in a first; a second group guard relay electrically connected to each of the test points in a second; a guard rail coupled to the first group guard relay and the second group guard relay; a first group return relay electrically connected to each of the test points in a first group; a second group return relay electrically connected to each of the test points in a second group; a current measurement rail coupled to the first group return relay and the second group return relay; a current meter coupled to the measurement rail; and a controller.

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 utility model discloses a current meter cabin device capable of storing fish lead, which comprises a current meter cabin main body, a cabin cover and a transmission mechanism, the current meter cabin main body is provided with a current meter cabin main body frame, a current meter cabin shell and a transmission mechanism platform, and the transmission mechanism is arranged on the transmission mechanism platform. The flow meter cabin shell is arranged on the fish lead cabin body frame, the cabin cover is arranged on the transmission mechanism, and opening and closing of the cabin cover are achieved through the transmission mechanism. The flow velocity meter cabin device capable of storing the lead fishes is used for storing the lead fishes, and the situation that the service life of the flow velocity meter is shortened due to the fact that the lead fishes are placed on the ground and affected by strong wind to enable the flow velocity meter in front of the lead fishes to rotate is avoided; the hatch cover is driven to be opened and closed through the transmission mechanism, and the problem that the hatch cover occupies large space after being opened can be avoided. And the brush I and the brush II are arranged, the steel wire rope for hanging the fish lead can extend out through the brush I, and the brush II can shield a gap between the flow meter cabin main body and the cabin cover, so that the flow meter cabin is very practical.

The application relates to the technical field of building construction, in particular to a high-water-level silt geology underground water level control device and a construction method, the high-water-level silt geology underground water level control device comprises an outer protective shell, an upper cover, a pressure detection seat, an inner conductive sheet and an outer conductive sheet, the outer protective shell is a cylindrical structure, an outer through hole is formed in the outer protective shell, an outer layer filter membrane is fixedly installed in the outer through hole, and a secondary embedded groove is formed in the inner side wall of a three-stage separation layer. The high-water-level silt geology underground water level control device is composed of the outer protective shell, the upper cover, the pressure detection seat, the inner conductive sheet and the outer conductive sheet, and conductive liquid is injected into a liquid storage cavity and a conductive cavity on the pressure detection seat, so that the liquid level in the conductive cavity changes under the pressure of underground water, the effective conductive area between the inner conductive sheet and the outer conductive sheet changes, the current of a current meter changes, and the pressure of the underground water is monitored.

The utility model discloses a portable radar flow velocity meter which comprises a flow velocity meter body and a bottom plate, the bottom of the flow velocity meter body is slidably connected with a telescopic rod, the bottom end of the telescopic rod is fixedly connected with a rotating rod, the top end of the bottom plate is fixedly connected with two fixing plates, and the rotating rod penetrates through the two fixing plates and is rotatably connected with the fixing plates. A base plate and a limiting ring are arranged on one side of a grip of the current meter main body; according to the utility model, the telescopic rod is arranged at the bottom of the current meter main body, can be stretched out at a proper position and is supported by the bottom plate, so that the stability during measurement is improved, and meanwhile, the cushion plate and the limiting ring are arranged to limit the arm, so that the holding stability is improved, and the situation that the arm slips out of the hand due to non-tight holding is avoided; therefore, the safety and the stability of the device are improved.

The utility model belongs to the technical field of hydrological instrument installation, particularly relates to an efficiency-improved type water and sand element integration device, and provides the following scheme aiming at the problems that various monitoring instruments cannot be installed on an existing installation platform at the same time, and obtained data is single during hydrological monitoring. Comprising a platform main body, a platform head, an empennage mounting plate, a vertical empennage and a horizontal empennage, and can provide a stable and adaptive mounting environment for each device, so that devices such as an ADCP, a current meter, a sand meter and the like can work in an optimal state, and the platform integrates various devices, can be used for synchronously testing flow, sand content, grain composition, bottom sand and the like, and is high in practicability. In one test, flow data are obtained through the flow velocity meter and the ADCP, the sediment condition is analyzed through the sediment meter and the sampler, the multi-dimensional monitoring requirement can be met through one-time operation, the hydrological monitoring efficiency and the data comprehensiveness are greatly improved, and the modern hydrological monitoring development trend is met.

The present application relates to the technical field of ocean current monitoring, and discloses a kind of ocean current meter data quality control method and system based on adaptive filtering.The original data containing ocean current direction and speed are obtained, after being decomposed into eastward and northward flow velocity components, frequency spectrum distribution is obtained by Fourier transform, dynamic filtering window is determined by adaptive filtering algorithm, components are preprocessed and feature vector is extracted to calculate flow direction;According to whether the amplitude of the feature vector changes is over the threshold, select Kalman filter to smooth the component or directly obtain the corrected flow direction data;The dynamic trend is extracted by principal component analysis method for the corrected data, and the main direction feature set is obtained;Based on the analysis of the influence of tides and topography, the environmental influence weight is obtained;The filtering parameter update frequency is adjusted by the weight, and the real-time component is filtered twice to output high-precision ocean current direction data.This method can improve the accuracy of ocean current meter data quality control and improve the monitoring accuracy.

Systems and Methods for capacitance testing of a unit under test with parasitic capacitance directed to a guard rail. The system includes test points, wherein the plurality of test points are divided into at least two groups; a stimulus source; a first group guard relay electrically connected to each of the test points in a first; a second group guard relay electrically connected to each of the test points in a second; a guard rail coupled to the first group guard relay and the second group guard relay; a first group return relay electrically connected to each of the test points in a first group; a second group return relay electrically connected to each of the test points in a second group; a current measurement rail coupled to the first group return relay and the second group return relay; a current meter coupled to the measurement rail; and a controller.

The utility model discloses an angle-adjustable radar wave velocity measurement device, which comprises a radar wave velocity meter, a positioning assembly and an aluminum plate, the lower end of the aluminum plate is fixedly connected with two mounting plates, a main shaft is rotatably connected between the two mounting plates, one end of the main shaft is fixedly provided with a bracket, and the main shaft is provided with a horizontal adjusting mechanism for adjusting the horizontal angle of the bracket. One end of the support is rotationally connected with a shell, a pitching adjusting motor is installed in the shell, the radar wave current meter and the positioning assembly are installed in the shell, and the aluminum plate is provided with a plurality of fixing assemblies used for being connected with a cableway. According to the utility model, the horizontal angle and the pitching angle of the radar wave flow velocity meter can be adjusted in real time according to the change of the water level, so that the radar wave beam and a lead fish monitoring point can be positioned on the same vertical line, the water flow velocities at different water depths are compared, and the monitoring precision of the water flow velocity is improved.

The invention relates to the technical field of ocean current monitoring, and discloses an ocean current meter data quality control method and system based on adaptive filtering. Comprising the following steps: acquiring original data containing ocean current direction and velocity, decomposing the original data into east-direction and north-direction velocity components, performing Fourier transform to obtain spectrum distribution, determining a dynamic filtering window by using an adaptive filtering algorithm, preprocessing the components, and extracting feature vectors to inversely calculate the flow direction; selecting Kalman filtering smooth component back calculation or directly obtaining corrected flow direction data according to whether the change amplitude of the feature vector exceeds a threshold value or not; extracting a dynamic trend from the correction data by using a principal component analysis method to obtain a principal direction feature set; on the basis, analyzing tide and terrain influences, and obtaining an environment influence weight; filtering parameter updating frequency is adjusted through weights, and high-precision ocean current direction data are output through secondary filtering back calculation of the real-time components. The method can improve the data quality control precision of the current meter and improve the monitoring accuracy.

This utility model relates to a water surface velocity monitoring device installed on a navigation beacon, comprising a first laser current meter, a second laser current meter, a voltage subtractor, an absolute value module, a Schmitt trigger, an electronic control switch module, and an audible and visual alarm module. The output terminal of the first laser current meter is connected to the inverting input terminal of the voltage subtractor, the output terminal of the second laser current meter is connected to the non-inverting input terminal of the voltage subtractor, the output terminal of the voltage subtractor is connected to the input terminal of the absolute value module, the output terminal of the absolute value module is connected to the input terminal of the Schmitt trigger, the output terminal of the Schmitt trigger is connected to the controlled terminal of the electronic control switch module, one end of the electronic control switch module is connected to a power supply voltage, the other end of the electronic control switch module is connected to the positive terminal of the audible and visual alarm module, and the negative terminal of the audible and visual alarm module is grounded. This utility model allows personnel to intuitively determine whether the water flow velocity collected by the laser current meter is accurate.

The invention discloses a Doppler current meter, and relates to the technical field of flow velocity measurement equipment. The Doppler current meter comprises a sensor module and a host, a connecting wire is arranged on one side of the sensor module, the end, away from the sensor module, of the connecting wire is connected with the host, the sensor module comprises a protective shell, and a high-frequency transducer, a low-frequency transducer and two acoustic isolation walls are fixedly installed in the protective shell. Independent acoustic windows are fixedly mounted at the front ends of the high-frequency transducer and the low-frequency transducer, a self-cleaning device is arranged on a front panel of the protective shell and comprises a first shell and a motor, a rotating shaft is fixedly connected to the output end of the motor, a first gear is fixedly connected to the outer surface of the rotating shaft, a first guide rail is fixedly mounted on the inner wall of the first shell, and a second guide rail is fixedly mounted on the inner wall of the first guide rail. The adaptability of equipment under different water flow conditions is improved, pollutants such as algae and silt are prevented from being attached to the acoustic window, and flexible adjustment of the measurement angle and depth is achieved.

The utility model discloses an electric wave current meter, relates to the electric wave current meter field, the electric wave current meter comprises an electric wave current meter main body and a grab handle, the top of the grab handle is provided with an adjusting assembly, the adjusting assembly comprises a threaded column installed on the top of the grab handle, the outer wall of the threaded column is respectively sleeved with a rotating sleeve and a movable ring, the bottom of the movable ring is provided with a movable groove, and the movable groove is provided with a through hole. And a movable block is arranged in the movable groove. According to the utility model, through the arrangement of the adjusting assembly, when the angle of the electric wave flow velocity instrument main body needs to be adjusted, the rotating sleeve can be rotated, the movable block is driven to slide in the movable groove, the rotating sleeve moves during rotation, then the movable ring is driven to move, the movable ring drives the rotating plate to rotate, and the rotating plate drives the electric wave flow velocity instrument main body to rotate; therefore, the angle of the electric wave flow meter main body can be quickly adjusted, the adjusting process is simple and convenient, the operation is simple and convenient, and the adjusting efficiency of the angle of the electric wave flow meter is improved.

This utility model discloses a current monitoring device for surge arrester resistor elements in extremely cold environments, belonging to the field of surge arrester resistor elements. It includes an extreme cold insulation component and a lifting component. The extreme cold insulation component includes a chassis, with a resistor element current detector detachably mounted on the upper end of the chassis. A resistor element current meter is installed inside the upper end of the resistor element current detector, and an insulation sleeve is fitted onto the side surface of the resistor element current meter. A protective sleeve is detachably mounted on the upper end of the chassis. The lifting component includes several hinge blocks mounted on the side surface of the chassis. This utility model, through the combination of the extreme cold insulation component and the lifting component, not only facilitates current detection of the surge arrester resistor elements but also enables the monitoring device to operate normally in extremely cold environments, thereby improving the ease of use of the current monitoring device. Furthermore, the coordinated structure allows for easy adjustment of the height of the current monitoring device as needed, further enhancing usability.

A method for estimating river flow based on unmanned aerial vehicles (UAVs) and decision tree regression includes: using a UAV equipped with a small dual-beam lidar and an ultrasonic current meter to measure the coordinates of measuring points, water depth, and surface velocity of the river cross-section; dividing the river surface area into refined segments and determining the abscissa of each segment's vertical line; using a decision tree regression algorithm for supervised learning, determining the subset of the trained model based on the set maximum depth of the decision tree, and predicting the water depth and surface velocity corresponding to each segment's vertical line; calculating the cross-sectional area and average velocity between adjacent vertical lines based on the predicted water depth and surface velocity of each vertical line, and obtaining the river cross-section flow by multiplying and summing the areas of each segment and the average velocity. This invention has significant practical value for measuring river flow under arbitrarily complex hydrological conditions.

The application discloses a data processing method of an underwater glider for obtaining a sea current profile, and belongs to the technical field of ocean exploration. The underwater glider for obtaining the sea current profile comprises a pressure-resistant unit, a tail unit and a flow velocity profile obtaining unit. The flow velocity profile obtaining unit comprises an acoustic Doppler flow velocity profiler, a current meter and a temperature-salinity-depth sensor. The underwater glider can obtain the sea current information by integrating the flow velocity sensor, but the obtained sea current information is the relative velocity relative to the moving glider platform, and is not the absolute velocity of the sea current. The application obtains the accurate sea current profile based on the motion information of the underwater glider and the flow velocity profile observation data.

This invention belongs to the field of hydrological element monitoring technology in the water conservancy and hydrology industries. Specifically, it relates to a circulating mobile suspension multi-cable multi-span radar current meter cableway structure, including a first support, a sag cable, a main cable, a cable saddle support, a circulating cable, an adjusting cable, a radar trolley, a circulating wheel, and a second support. This invention can both install a radar current meter to measure the water surface velocity along a fixed vertical line and allow for real-time adjustment of the current meter sensor position when the main channel of the riverbed swings, ensuring effective monitoring of the water surface velocity. At the same time, it controls the cableway sag within a safe range, reducing or eliminating errors and safety hazards caused by the radar current meter's position shifting due to wind influence. Furthermore, the circulating cable allows the radar current meter to be retrieved for maintenance during equipment repairs.

The application discloses a flow field self-adaptive calculation method and system based on an acoustic Doppler current profiler. The method comprises the following steps: collecting original spectrum data of a Doppler current meter and synchronous attitude, position and water level information; pre-processing and quality marking the original data; extracting multi-dimensional features, identifying the current dominant flow field type through a pre-trained flow field classification model; adaptively selecting a flow velocity profile reconstruction algorithm according to the flow field type, and dynamically adjusting key algorithm parameters in the reconstruction process according to flow field stability or turbulent intensity parameters; generating a calculation grid for flow integration calculation based on the reconstruction strategy, and comprehensively evaluating data, models and integration errors to quantify the uncertainty of the output flow result; and finally, performing flow field anomaly diagnosis, short-term flow trend prediction and equipment health state early warning. The application solves the problem of insufficient accuracy of traditional fixed algorithms under complex flow fields, and significantly improves the reliability and intelligent level of flow monitoring.

This utility model discloses a four-cableway multi-point radar wave flow measurement device, including a first tower and a second tower fixed on both banks of a river. Each tower has two upper cableway positioners and two lower cableway positioners. The two ends of the two upper and lower cables pass through the corresponding cableway positioners on the first and second towers and are fixed to the ground. The two upper cables are connected by several upper connecting plates, and the two lower cables are connected by several lower connecting plates. An adjustable-length rotating rod structure is installed between each corresponding upper and lower connecting plate. Several radar current meters are installed along the width of the river on the lower cables or lower connecting plates. This utility model provides a complete solution for high-performance, high-reliability, and maintenance-free automated hydrological monitoring of bridge-free river sections, possessing extremely high promotional value and market prospects.