59 results about "Wind measurement" patented technology

This application belongs to the field of meteorological monitoring technology and discloses a three-dimensional orthogonal ultrasonic anemometer and wind measurement method based on the dual-mode time difference method. The anemometer includes: three sets of ultrasonic probes, each set containing two through-beam ultrasonic probes, arranged along the X-axis, Y-axis and Z-axis directions respectively; an ultrasonic mounting base for fixing the three sets of ultrasonic probes, with the backward extension lines of the tail ends of the probes in the X-axis and Y-axis directions intersecting at the center of the mounting base, and the probe in the Z-axis direction located above the symmetrical center line of the plane formed by the X-axis probe and the Y-axis; a conditioning circuit module installed inside the ultrasonic mounting base and electrically connected to the three sets of ultrasonic probes; wherein, the signal conditioning and processing circuit is configured to: calculate a first wind speed value and a second wind speed value based on the threshold time difference method and the median time difference method respectively for the propagation time; output the second wind speed value in response to the determination of low wind speed conditions; and output the first wind speed value in response to the determination of high wind speed conditions.

The application discloses a non-orthogonal transducer array three-dimensional ultrasonic wind speed and direction instrument which can be carried on a unmanned aerial vehicle and applied to the field of wind speed and direction instruments, and the non-orthogonal transducer array is adopted to reduce the influence of turbulence on wind measurement accuracy; when the turbulence degree generated by one group of transducers is relatively large, the other two groups of transducers can compensate the data, so that high-precision wind speed and direction measurement is realized; meanwhile, when the unmanned aerial vehicle encounters strong wind, the probe fixing rod will be broken, so that the unmanned aerial vehicle is prevented from losing control due to the large wind area of the orthogonal annular support, and the fixed base plate and the elastic thin rod are arranged to recycle the broken and fallen orthogonal annular support and ultrasonic probe, so that the high-altitude falling object is not easy to form, and the orthogonal annular support and the ultrasonic probe are effectively protected, the subsequent recycling and reuse of the orthogonal annular support and the ultrasonic probe are facilitated, and the wind direction and speed detection in strong convection weather such as strong wind is applicable.

This application provides a coal powder sampling and wind speed measurement device. The device includes a sampling unit, a flow velocity measurement unit, and an air compression unit. A coal powder sampling gripper in the sampling unit is rotatably mounted at one end of a sampling tube, and the gripper is internally connected to the sampling tube. An electrically controlled rotation device controls the rotation of the coal powder sampling gripper. A cyclone separator is installed at the other end of the sampling tube. A thermocouple in the flow velocity measurement unit is located inside a back-mounted tube. A coal powder tube temperature measuring device is connected to the thermocouple, and a coal powder tube wind speed measuring device is connected to the back-mounted tube. The air compression unit has a negative pressure pipeline where compressed air is introduced at one end and discharged at the other end to generate negative pressure in the cyclone separator. This negative pressure pipeline is used to adjust the air velocity based on the dust flow velocity measured by the flow velocity measurement unit. A back-flushing pipeline is connected to the cyclone separator. This device improves sampling accuracy and avoids sampling tube blockage.

This application discloses a method, apparatus, equipment, and medium for fusing atmospheric boundary layer wind speed data based on a hybrid-system wind-measuring lidar, relating to the field of computer technology. The method includes: simultaneously acquiring coherent wind measurement data and direct sounding wind data currently measured by the hybrid-system wind-measuring lidar during atmospheric boundary layer wind field observation; performing spatiotemporal registration and preprocessing on the coherent wind measurement data and direct sounding wind data; fusing atmospheric boundary layer wind speed data based on the preprocessed wind measurement data and a current preset fusion model to obtain the current fused target wind speed data; the preset fusion model is a model constructed based on a heterogeneous dual-branch deep neural network; and determining the target atmospheric boundary layer wind profile based on the hybrid-system wind-measuring lidar and the target wind speed data. This application can achieve high-precision wind profile fusion, improving the accuracy, precision, and environmental robustness of atmospheric boundary layer wind speed data fusion.

The application discloses a wind power generation site selection method based on ancient storm deposition background and relates to the field of power generation site selection, which comprises the following steps: setting a unified space reference, forming an input data set, performing wind source basin assimilation fusion, generating modern wind field three types of grids, and configuring a modern wind field deposition response calibration reference domain. Long-term wind direction and wind speed prior are established by using storm deposition records and direction evidence, annual uncertainty caused by only relying on short-term wind measurement is reduced, hard constraint filtering is formed by using soft sediment deformation risk coding and boundary stability marking, a penalty term is introduced into scoring, ground investigation and construction stage risks are reduced, candidate area output synchronously gives evidence chain index and uncertainty level, short-term wind measurement review, ground investigation review and deviation backwriting self-calibration iteration are performed, and finally, site selection achievement package containing superimposed graph and evidence chain list is solidified, so that site selection decision transparency and landing efficiency are improved.

The application discloses a wind speed and direction measuring device suitable for icing environment and relates to the technical field of wind speed and direction measurement. The device comprises a first bluff body, a second bluff body, a wind speed measuring instrument and a wind direction measuring instrument. The first bluff body is located above the second bluff body, and a gap is formed between the first bluff body and the second bluff body, which forms an air inlet channel. The wind speed measuring instrument and the wind direction measuring instrument are arranged at the air inlet channel. Alternatively, the lower surface of the first bluff body is provided with a wind speed measuring hole array and a wind direction sensing hole array, and the wind speed measuring hole array and the wind direction sensing hole array are uniformly distributed along the circumferential direction of the center of the first bluff body. The wind speed measuring instrument is arranged at the wind speed measuring hole array, and the wind direction measuring instrument is arranged at the wind direction sensing hole array. The device forms a pneumatic boundary layer through the first bluff body and the second bluff body, and the wind speed measuring hole array and the wind direction sensing hole array are hiddenly arranged on the lower surface of the first bluff body, so that the influence of icing on the reliability of the wind speed and direction measurement results can be reduced.

The application belongs to the technical field of ocean engineering pool test device, and discloses a kind of ocean engineering test pool wind measuring system and measuring method, including portal, across being arranged in test pool both sides, lifting unit is arranged on the portal;Travel mechanism is installed in the bottom end both sides of the portal, the travel mechanism is used to drive the portal longitudinal horizontal movement along the track being laid in pool side;Crossbeam lifting mechanism is connected to the portal in a lift, and crossbeam lifting mechanism is slidably connected with transverse sliding mechanism;Wind speed measuring unit is arranged on the transverse sliding mechanism, for measuring wind speed;Data acquisition and calculation system, the travel mechanism, the crossbeam lifting mechanism, the transverse sliding mechanism and the wind speed measuring unit are electrically connected with the data acquisition and calculation system respectively.The application can automatically, accurately and efficiently scan, measure and reconstruct three-dimensional wind field distribution, and comprehensively and accurately grasp the wind field characteristics of test area.

The application discloses a kind of wind field wind blade integrated monitoring method based on millimeter wave radar array, comprising: by the observation data obtained by millimeter wave radar array on the top of cabin is carried out distance and doppler processing, generate point cloud observation result, and construct echo energy time sequence in wind blade area, determine wind blade sweep period by peak value detection.Construct time slot control sequence, wind blade occupation period is used for point cloud reconstruction, unobstructed period is used for wind measurement.In wind blade point cloud reconstruction time slot, reconstruct wind blade point cloud by multi-channel signal synthesis, threshold detection and angle estimation etc., and extract blade state parameter;In wind measurement time slot, by multi-view radial velocity observation, establish wind speed vector inversion model, and obtain wind speed and wind direction by using weighted fusion method.Wind blade state parameter and wind field parameter are fused and output under unified coordinate system and time axis.The method does not need additional wind measurement equipment, realizes the integration, continuity and high reliable monitoring of wind field and wind blade.

The present application belongs to the field of instrument and control, and relates to a non-direct measurement type wind speed meter and a wind speed measurement method. The non-direct measurement type wind speed meter comprises a wind speed meter device shell, a data processing circuit arranged in the device shell, a propeller type wind speed sensor and a cable arranged on the device shell, the propeller type wind speed sensor and the cable being in data connection with the data processing circuit, and a touch screen, a charging interface and a switch button also being arranged on the device shell. The present application has the following remarkable effects: reducing the hidden danger of operation safety of hoisting equipment without being equipped with a wind speed meter, using on the ground, calculating the wind speed at the hoisting work height according to the wind speed data at the ground, measuring accurately and quickly, improving work efficiency, improving unit profit, improving quality and efficiency, and having popularization value in the nuclear power industry and engineering construction hoisting, high-altitude maintenance operation occasions.

A system for controlling aeraulic conditions existing above an aerial arrival zone includes anemometric components and aeraulic components. The anemometric components deliver speed and bearing angle values that characterize a relative wind speed with respect to the aerial arrival zone and to a superstructure located close to the aerial arrival zone. The aeraulic components are capable of modifying air movements above the aerial arrival zone, and are controlled according to the wind speed and bearing angle values. Such a system is particularly suitable for use on board a ship able to carry a helicopter, in particular on its afterdeck.

1. Name of the design product: wind measurement laser radar. 2. Use of the design product: the design product is an integrated coherent Doppler wind measurement laser radar, which is used for high-precision detection of atmospheric boundary layer wind field. 3. Design points of the design product: the overall shape of the product. 4. Picture or photo best indicating the design points of the design: perspective view 1.

This utility model discloses a sealing device for a circular backrest tube, including a backrest tube body and a pipeline ball valve sealed to the pressure measuring port of the pulverized coal flow pipeline. The sealing device includes a sealing component threaded to one end of the pipeline ball valve and a compression component. This utility model allows for manual opening of the pipeline ball valve, inserting the backrest tube body through the valve into the pulverized coal pipeline. Manual rotation of the tightening ring drives the compression stud to rotate within the placement groove. During rotation, the compression stud extends towards the sealing ring. Under the compression of the compression stud, the narrow opening in the center of the sealing ring undergoes a certain degree of contraction and deformation, thus tightly wrapping around the outer wall of the backrest tube body, achieving a complete seal between the backrest tube body and the pulverized coal pipeline. This prevents the leakage of primary air and the air-powder mixture, thereby making the wind speed measurement of the pulverized coal pipeline more accurate.

A method for stabilizing yaw moments in a wind turbine, comprising obtaining at least one wind measurement comprising at least one wind direction measurement, determining a yaw drift Δ Ψ and an expected yaw actuation angle ΨT, obtaining a saturation range, modifying the saturation range, determining a yaw actuation angle Ψ which is a function of the yaw drift Δ Ψ, applying the modified saturation range on the yaw actuation angle Ψ, and performing a yaw actuation of the rotor on the wind turbine based on the saturated yaw actuation angle Ψs. A control system for stabilizing yaw moments in a wind turbine comprising a first unit, configured to obtain wind measurements, a second unit, in data communication with the first unit, and an actuating unit, in data communication with the second unit, and in engagement with a rotor of a wind turbine.

This utility model relates to the field of wind speed measurement technology, specifically a wind speed measuring device, comprising: a positioning frame, an electrically retractable support rod, a wind speed measuring module, a drive module, and a PLC programmable logic controller. An electrically retractable support rod is located at each of the four corners of the bottom of the positioning frame. The drive module is located at the top of the positioning frame, and the wind speed measuring module is located at the top center of the drive module. The PLC programmable logic controller is fixedly connected to one side of the positioning frame and is electrically connected to the electrically retractable support rod, the wind speed measuring module, and the drive module. This utility model device features a retractable support, allowing for door-closing operation during testing. The device can adjust its height according to the volume of the device being tested. The device has a built-in driver program with account control, access control, and audit tracking, enabling electronic data management, ensuring data integrity and security, reducing the impact of human measurement on results, and avoiding errors in test results caused by door-opening operations.

The application discloses a negative shear identification method and system based on three-dimensional wind speed deduction and multi-modal learning, and belongs to the technical field of wind power generation, comprising: multi-source data acquisition; digital elevation model construction; atmospheric boundary layer and three-dimensional wind speed deduction; negative shear event prediction algorithm construction; and negative shear stereoscopic perception and decision output: fusion of wind farm high-resolution three-dimensional wind speed deduction model output and negative shear event multi-modal prediction model output, quantification of negative shear intensity and duration characteristics, generation of risk level and control strategy suggestion, realization of three-dimensional perception and active early warning of negative shear events. The application will break through the single-point wind measurement and early warning lag limitation, realize the global perception of three-dimensional wind speed of height, radial and circumferential of each position of the wind farm, can predict the occurrence of negative shear in advance, provide reliable wind speed state input for the wind turbine main control, and prevent the tower scanning event from occurring.

This utility model relates to the field of anemometer technology, specifically to an integrated anemometer, comprising a body with an anemometer detachably connected to one end. A wire connects the body and the anemometer. The body has a winding mechanism, which includes a housing fixedly mounted inside the body. A spring is fixedly mounted inside the housing, with both ends of the spring fixedly connected to the housing and a rotating base, respectively. The rotating base is rotatably connected to the housing. A conductive slip ring is also provided inside the housing, with its rotor and stator fixedly connected to the rotating base and the housing. One end of the wire is fixedly connected to the rotating base, and the other end passes through an opening in the body and connects to the anemometer. The detachable connection between the anemometer and the body allows for wind speed measurement in confined spaces or by hand, greatly enhancing its environmental adaptability.

The present invention provides a system and method for a radar / optical signal integrated gust detection system. [Solution] In a particular embodiment, the system includes an optical system mounted on an aircraft and configured to provide optical wind measurements from a volume of space along the direction of travel of the aircraft. Furthermore, the system includes a radar system mounted on an aircraft and configured to provide radar wind measurements from a volume of space along the direction of travel of the aircraft. The system also includes a processor that receives optical wind measurements from the optical system and radar wind measurements from the radar system, the processor configured to characterize gusts in the volume of space by fusing the optical wind measurements with radar wind measurements, the fusing of optical wind measurements with radar wind measurements based on meteorological conditions in the volume of space.

A tension measurement and connection system for guy wires of a guyed wind measurement tower and its assembly method belong to the infrastructure technology field of the onshore wind power industry. The tension measurement and connection system is installed at the connection point between one end of the guy wire and the foundation tie rod of the guy wire reel, realizing the connection between the structural guy wire and the foundation tie rod. Simultaneously, during installation and construction, the tension of the guy wire is measured to ensure it reaches its design value, guaranteeing the safety of the entire structural system. It connects the main rod to the foundation tie rod via a U-shaped connecting rod and a circular loop, and a limiting nut secures the connecting crossbar to the U-shaped connecting rod, forming a closed-loop series structure. The guy wire is then fixed to the series structure using a clamp sleeve, a conical clamp, and clamp tightening bolts. A sensor installed on the sensor mounting bracket and the limiting nut ensure the pre-tension of the guy wire reaches its design value. This invention can simultaneously measure the pre-tension of the guy wire and connect it to the foundation tie rod of the guy wire reel, allowing the guy wire to perform its designed function and ensuring the safety of the wind measurement tower.

The application relates to the technical field of signal processing, and discloses an intelligent anti-interference signal processing method and system for a portable laser wind measurement radar, the method comprising the following steps: constructing a physical-inspired feature network, outputting a feature vector and mapping the feature vector to a low-dimensional physical parameter vector, constructing a composite loss function according to the low-dimensional physical parameter vector; constructing a raindrop particle size distribution according to the low-dimensional physical parameter vector, calculating the backscattering cross section and the terminal falling velocity of each particle, obtaining a Doppler frequency shift according to the terminal falling velocity, and obtaining the spectrum of an interference signal according to the backscattering cross section and the Doppler frequency shift; obtaining a pure wind field signal according to the spectrum of the interference signal and a mixed spectrum, and obtaining a horizontal wind vector according to the pure wind field signal. The application realizes high-precision wind speed inversion.

This invention relates to a machine learning-based method and system for calibrating wind speed readings on power meteorological devices. The method includes: acquiring raw wind speed measurements and environmental parameters collected synchronously with the raw wind speed measurements; calculating air property parameters based on the environmental parameters, and constructing a physical enhancement feature set based on the air property parameters and the raw wind speed measurements; preprocessing the physical enhancement feature set to obtain a preprocessed feature vector; inputting the raw wind speed measurements into a physical basis model to obtain a basis-calibrated wind speed; using the basis-calibrated wind speed and the preprocessed feature vector as inputs to a residual compensation model to obtain a wind speed residual compensation amount; and obtaining the final calibrated wind speed based on the basis-calibrated wind speed and the wind speed residual compensation amount. Compared with existing technologies, this invention significantly improves the wind speed calibration accuracy and extrapolation robustness of power meteorological devices.

The utility model relates to a kind of acoustic phased array wind measurement device and system, its device includes: shell and setting phased array acoustic wave emission array, multichannel echo receiving array, monitoring component and control host computer on shell;Shell includes support frame and is set on the horn-shaped shell of support frame;Phased array acoustic wave emission array is set in horn-shaped shell, including the multiple acoustic-electric transducer units of two-dimensional rectangular array arrangement;Multichannel echo receiving array is set in horn-shaped shell, including the microphone unit equal in number with acoustic-electric transducer unit and the same physical aperture layout is shared;Monitoring component is used to monitor environmental information and the attitude information of acoustic phased array wind measurement device;Control host computer is connected with phased array acoustic wave emission array, multichannel echo receiving array and monitoring component respectively.The device proposed in the utility model has the characteristics of compact structure, all-weather operation and mobile deployment, improves the precision of acoustic wind measurement and reduces operation and maintenance cost.

This invention discloses a method and system for processing instantaneous wind speed signals based on improved wavelet denoising. The method includes analyzing the basic characteristics of the signal acquisition equipment, extracting the original signal features using wavelet decomposition, filtering out interference components, and reconstructing the wind speed signal while retaining the features. Specifically, Haar, Db2, Db3, dmeyer, and bior5.5 wavelet functions are selected for 3-6 level decomposition, a differentiated threshold strategy is employed for denoising, and the denoising effect is evaluated using R², RMSE, SNR, and Cor metrics. This invention combines equipment characteristics with pre-frequency analysis to specifically remove interference at specific frequencies. Compared to traditional historical data denoising methods, both R² and RMSE are improved. Superior results are achieved even with smaller decomposition levels. It requires less computation and less data storage, making it suitable for scenarios with limited wind turbine controller resources and effectively improving the accuracy of instantaneous wind speed measurement.

A wind speed measuring device and method includes: a hot wire connected in a Wheatstone bridge, used to calculate wind speed by measuring the heat loss of the hot wire in the airflow; a temperature sensor positioned near the hot wire to detect the airflow temperature Tg; a heater electrically connected to the hot wire to increase the current in the hot wire, heating it to a predetermined temperature Tw; and a communicative connection between the heater and the temperature sensor, which adjusts the hot wire temperature Tw according to the airflow temperature Tg to maintain a constant superheat ΔT, where ΔT = Tw - Tg. By placing the temperature sensor near the hot wire, when the temperature sensor detects a change in the airflow temperature near the hot wire, the heater adjusts the amount of heat supplied to the hot wire to keep the superheat ΔT constant. This reduces the influence of temperature on wind speed detection and improves the accuracy of wind speed measurement.

The application discloses a multi-range gate wind speed inversion method based on adaptive super-noise frequency offset estimation and CNN-LSBoost fusion, and belongs to the technical field of laser radar wind measurement. In view of the problems of great wind speed inversion error caused by unstable radial frequency estimation and poor noise resistance of a four-beam Doppler laser radar under low signal-to-noise ratio, the application firstly constructs a robust power spectrum resistant to gain drift through median filtering, SG smoothing and noise section logarithmic domain normalization; then an adaptive super-noise centroid frequency offset estimation method is proposed, a local centroid weighted by super-noise power in a symmetrical window is calculated, and combined with physical constraints to remove abnormalities; then a least square method is used to synthesize a horizontal wind vector and construct a two-dimensional feature matrix of gate-beam; finally, spatial embedding features are extracted through a shallow two-dimensional CNN network, and input into an LSBoost boosting tree model to complete nonlinear regression of wind speed. The application effectively improves the precision and robustness of multi-range gate wind speed inversion under extreme complex conditions.

The application provides a lightning protection wind measuring device of an offshore wind turbine, and relates to the technical field of wind power monitoring, which comprises a base, the upper end of the base is provided with a lightning receptor, the lightning receptor comprises a flange fixing disc, a main lightning rod and a framework ring, the flange fixing disc and the framework ring are provided with a wind direction follow-up flow guiding structure, the wind direction follow-up flow guiding structure is installed in cooperation with a first sliding groove in a first ring, a first sealing bearing and a second sealing bearing installed in a second ring, and a first connecting ring, a second connecting ring, a first connecting rod support, a wind tail wing, a second connecting rod support and a trapezoidal arc surface wind guiding indicator installed oppositely, so as to form a complete wind vane structure, which can guide external airflow to flow stably along the streamlined surface of the trapezoidal arc surface wind guiding indicator, disperse the force of wind by using the guiding effect of airflow, reduce the wind resistance load borne by the whole lightning receptor, and avoid the occurrence of inclination, tilt or structural damage of the lightning receptor caused by the continuous impact of strong wind.

This invention discloses a method and apparatus for evaluating wind turbine retrofitting schemes based on operational data, relating to the field of wind power engineering technology. The method includes: collecting at least five years of operational data from the target wind farm; preprocessing the data using the DBSCAN-segmented quartile combination algorithm; restoring the free-flow wind speed through primary and secondary correction functions to separate the impact of wind resource fluctuations and obtain the net power generation revenue increment from the retrofit; and establishing a multi-dimensional comprehensive evaluation system to assess the degree to which the technological upgrade improves the overall benefits of the wind farm. The apparatus includes a data acquisition module, a correction module, and an evaluation module, which execute the steps described above. This invention solves the problems of insufficient representative wind measurement data and single evaluation indicators for retrofitting schemes. By utilizing existing operational data from wind farms, it can effectively isolate the impact of wind resource fluctuations, explore the net power generation revenue increment brought about by the technological upgrade of wind turbines, improve the accuracy and comprehensiveness of the evaluation, and provide a scientific basis for the selection of retrofitting schemes.