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198 results about "Filter window" patented technology
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Ocean salinity data correction method based on space-time gradient adaptive filtering
The invention relates to the field of ocean observation data processing, and discloses an ocean salinity data correction method based on space-time gradient adaptive filtering, which comprises the following steps of: calculating a motion compensation salinity gradient and a motion compensation temperature gradient; constructing a double-gradient driving filtering window, introducing a gradient sensitive weight distribution strategy, and carrying out adaptive dynamic filtering on the salinity data; generating an initial hyper-parameter combination of the GBDT model; inputting salinity data subjected to adaptive dynamic filtering into the model, optimizing an initial hyper-parameter combination of the model by using a grey wolf optimization algorithm, obtaining an optimal hyper-parameter combination through a dynamic search strategy, and obtaining a final salinity correction value at the same time; and carrying out index verification on the final salinity correction value, and when the salinity does not reach the standard, correcting a model hyper-parameter or a self-adaptive dynamic filtering parameter until the salinity reaches the standard. According to the method disclosed by the invention, the physical abrupt change signal of the spring layer region is reserved to the greatest extent while the noise is suppressed, and the accuracy of salinity profile correction is remarkably improved.
Owner:OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
Laser ranging method and laser ranging sensor
The invention relates to the technical field of laser ranging, in particular to a laser ranging method and a laser ranging sensor, and the method comprises the steps: obtaining a laser pulse signal transmitted by the laser sensor and a received echo signal; obtaining a spectrogram of the echo signal, and extracting candidate peak points and peak intervals thereof; judging whether each candidate peak point is a peak point or not; converting the frequency domain signal in the peak interval of each peak point to obtain a characteristic echo signal; obtaining an interfered index of the characteristic echo signal corresponding to each peak point; obtaining a local signal change degree of each characteristic echo signal in each filtering window; obtaining an optimal filtering window by combining the endpoint difference of the peak interval between the peak points; and filtering the characteristic echo signal of each peak point, and calculating distance data according to the phase difference between the laser pulse signal and the filtered characteristic echo signal. The invention aims to improve the ranging precision and efficiency of the laser ranging sensor.
Owner:BEIJING HENGRUNAN TECH CO LTD
Intra prediction method and apparatus based on interpolation filtering, video encoding method and apparatus, video decoding method and apparatus, and system
An intra frame prediction method and apparatus based on interpolation filtering, a video encoding method and apparatus, a video decoding method and apparatus, and a system. The intra prediction method based on interpolation filtering comprises: determining, based on a determined filtering window and a reconstructed value of a sample in a reconstruction area neighboring to a current block, a filtering coefficient used to perform interpolation filtering on the current block; and performing interpolation filtering based on a sample value of a reference sample neighboring to a current sample and the filtering coefficient, to determine a predicted value of the current sample.
Owner:GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD
Three-waveband medium-long wave infrared optical filter and preparation method thereof
The invention relates to a three-waveband medium-long wave infrared optical filter and a preparation method, the three-waveband medium-long wave infrared optical filter comprises a front film system, a substrate and a back film system, and the substrate is located between the front film system and the back film system; the front film system is formed by alternately overlapping germanium layers and zinc selenide film layers; and the back film system is formed by alternately overlapping germanium layers and zinc selenide film layers. According to the invention, the light energy of three wave bands of 3780-4000 nm, 4500-4900 nm and 7850-9500 nm is improved, the luminous flux of other wave bands is well inhibited, the technical problem of infrared filtering windows in some special infrared spectrum detection systems is solved, and a new scheme is provided for the application of the infrared spectrum detection systems.
Owner:SHANGHAI MIFENG LASER TECH CO LTD
Semi-solid-state circuit breaker with intelligent regulation and control function based on photovoltaic system
The invention relates to the technical field of circuit breakers, in particular to a semi-solid circuit breaker with an intelligent regulation and control function based on a photovoltaic system, which comprises a first acquisition module, a second acquisition module and a control module, the filtering window is used for acquiring to-be-filtered electrical data of the photovoltaic system and the to-be-filtered electrical data by using the semi-solid-state circuit breaker; the second acquisition module is used for acquiring filtering data of the to-be-filtered electrical data; and the regulation and control module is used for regulating and controlling the photovoltaic system according to the filtering data. And the filtering process of the electrical data of the photovoltaic system acquired by the semi-solid circuit breaker is optimized, so that the quality of the filtering data can be improved, and the effect of subsequently regulating and controlling the photovoltaic system based on the filtering data can be ensured.
Owner:SHANDONG DEYUAN POWER TECHNOLOGY CORP LTD
Remote sensing image space-time fusion color correction method based on virtual low-resolution reconstruction
The invention provides a remote sensing image space-time fusion color correction method based on virtual low-resolution reconstruction, and the method comprises the steps: obtaining a to-be-reconstructed original remote sensing image, and determining a corresponding reference image according to the features of the original remote sensing image; performing virtual low-resolution image reconstruction by using the original remote sensing image and the reference image to obtain a virtual low-resolution image; and based on the virtual low-resolution image, performing color correction processing on the original remote sensing image by adopting a space-time fusion strategy to obtain a uniform color result image. According to the method, a weighted space-time filtering mechanism is introduced into color correction processing, a virtual low-resolution image is generated as auxiliary data, time correlation, spatial proximity and spectral similarity among the virtual low-resolution image, an original image and a reference bottom image element are comprehensively considered, spectral similar pixels of a central pixel in a filtering window are utilized to participate in result operation, and the color correction accuracy is improved. And generating a result image with the detail features of the original image and the spectral features of the reference image.
Owner:WUHAN UNIV
Filtering device with automatic cleaning function
ActiveCN120189742ATransportation and packagingStationary filtering element filtersMechanical engineeringFilter window
Owner:SHANDONG YIBAITONG VALVE CO LTD
Underwater facility defect geometric feature measurement method, system, medium and equipment
The invention relates to the technical field of underwater facility measurement, and provides an underwater facility defect geometric feature measurement method and system, a medium and equipment, and the method comprises the steps: calculating the actual sound velocity based on the water temperature, water pressure and salinity, correcting a sonar point cloud, calculating the sound velocity change rate, and adjusting the size of a filtering window, performing smooth filtering on the corrected sonar point cloud; for the surface image, calculating an image dark channel, after smoothing the dark channel image through scattering filtering, calculating transmissivity, fusing a scattering coefficient, removing surface image scattered light, and correcting the scattering coefficient through turbidity; based on the salinity and the water temperature, the underwater refraction angle of the laser is calculated, and the three-dimensional scanning point cloud is corrected; registering and fusing the point clouds to generate a facility surface point cloud model; based on the surface image, texture information of the facility surface is extracted, after the texture information is mapped to the facility surface point cloud model, a defect area is segmented, and geometric feature parameter extraction is carried out. And the detection reliability in a complex water area environment is improved.
Owner:STATE GRID INTELLIGENCE TECHNOLOGY CO LTD +1
Track correction method and device and medium
The invention discloses a track correction method and device and a medium. The method comprises the following steps: acquiring a track to be corrected; determining at least one section of abnormal trajectory included in the trajectory to be corrected; correcting the at least one section of abnormal trajectory to obtain at least one section of corrected trajectory; and determining a target trajectory based on the at least one section of corrected trajectory and a normal trajectory included in the trajectory to be corrected. According to the method, the negative influence caused by adjacent correction of the track points through the filtering window in the related technology can be overcome, so that the track correction requirement in practical application can be met.
Owner:CHINA MOBILE SHANGHAI ICT CO LTD +2
Method and device for estimating Doppler parameters of moving target of satellite-borne SAR (Synthetic Aperture Radar)
The invention discloses a method and a device for estimating Doppler parameters of a satellite-borne SAR (synthetic aperture radar) moving target. The method comprises the following steps: generating a radar echo signal based on a pre-constructed simulation scene of a synthetic aperture radar detection moving target; preprocessing the echo signal to obtain an initial WVD curve of the echo signal; constructing a binary Gaussian matching filtering window based on the coordinate of the maximum amplitude position in the initial WVD curve, and filtering the initial WVD curve by using the filtering window to obtain a filtered WVD curve; calculating points are selected on the filtered WVD curve, a linear equation is fitted based on the selected calculating points, and estimation of the slope and intercept parameters of the linear equation is completed; and inverting the Doppler parameter estimation value of the radar moving target based on the estimated slope and intercept. According to the invention, the Doppler parameter of the moving target can be accurately estimated.
Owner:北京普航科技有限公司 +1
Dual-band medium-long wave infrared optical filter based on germanium / zinc sulfide asymmetric film system and preparation method of dual-band medium-long wave infrared optical filter
The invention relates to a dual-waveband medium-long wave infrared optical filter based on a germanium / zinc sulfide asymmetric film system and a preparation method of the dual-waveband medium-long wave infrared optical filter. The dual-waveband medium-long wave infrared optical filter comprises a front film system, a substrate and a back film system, the front film system and the back film system are formed by alternately overlapping germanium layers and zinc sulfide film layers; the average transmittance of the infrared optical filter in the wave band of 3800 nm to 4800 nm and the wave band of 8000 nm to 10000 nm is not lower than 91%. According to the two-waveband medium-long wave infrared optical filter disclosed by the invention, 3800 to 4800 nm amp is realized; according to the infrared filtering window, the light energy of medium waves and long waves of 8000-10000 nm is improved, the luminous flux of other wavebands is well inhibited, the technical problem of the infrared filtering window in some special infrared spectrum detection systems is solved, and a new scheme is provided for infrared application.
Owner:SHANGHAI MIFENG LASER TECH CO LTD
Ultrasonic echo signal optimization method and device, medium and terminal equipment
ActiveCN119515719Areduce sizeImprove focus qualityImage enhancementImage analysisAdaptive filtering algorithmRectangular coordinates
The invention discloses an ultrasonic echo signal optimization method and device, a medium and terminal equipment. According to the invention, the preprocessed echo signal received by the ultrasonic probe is obtained, and the signal is presented in the form of envelope data under the corresponding rectangular coordinate system. Then, taking the envelope line data as a center, dividing a plurality of neighborhood blocks in a rectangular coordinate system, calculating similarity weights among the neighborhood blocks, and distributing a corresponding weight value for each neighborhood block; and finally, adjusting the size of a filtering window and optimizing the ultrasonic echo signal in combination with an adaptive filtering algorithm, a minimum energy function, the distance from envelope data to a preset focus and the weight of each neighborhood block, so as to solve the problem that the accurate ultrasonic echo signal cannot be obtained in the prior art.
Owner:GUANGZHOU SONOHEALTH MEDICAL TECHNOLOGIES CO LTD
Element stripping method, device and equipment based on multispectral data and medium
ActiveCN121074690AEnsemble learningCharacter and pattern recognitionImage manipulationFilter algorithm
The invention discloses an element stripping method and device based on multispectral data, equipment and a medium, and relates to the field of remote sensing image processing, and the method comprises the steps: collecting a multispectral image of a target region; a self-adaptive window filtering algorithm is adopted to pre-process the multispectral image to obtain a multispectral enhanced image, and the self-adaptive window filtering algorithm calculates a window adjustment coefficient based on noise density, gray variance and gradient magnitude; spectral features and texture features are extracted from the multispectral enhanced image; fusing the spectral features and the texture features, and constructing fusion features of each pixel in the multispectral enhanced image; determining a ground feature category of each pixel based on the fusion features to strip a plurality of vectorized layers containing different elements; according to the method, the three indexes of the noise density, the gray variance and the gradient magnitude can be fused, the window adjustment coefficient is obtained, dynamic self-adaptive change of the filtering window size is achieved, and higher-precision data support is provided for subsequent element extraction.
Owner:JILIN JIANZHU UNIVERSITY
Automatic equipment data acquisition method and system
The invention relates to the technical field of data processing, in particular to an automatic equipment data acquisition method and system, and the method comprises the steps: obtaining the voltage data and temperature data of each piece of equipment; dividing the voltage data and the temperature data of each device into a plurality of time windows; acquiring a change trend coefficient of each device in each time window, and acquiring a temperature influence coefficient of each device in each time window; acquiring a voltage transient coefficient of each device in each time window; fractal dimensions of all the devices in all the time windows are obtained; acquiring an electromagnetic disturbance coefficient of each device in each time window; acquiring a data acquisition disturbance value of each device in each time window; and the disturbance coupling index of each device in each time window is obtained, and then the filtering window parameter of each device in each time window is obtained, so that adaptive filtering of the voltage data is realized. By analyzing the environmental interference degrees of different devices in different time periods, adaptive filtering is performed on the acquired data, so that the accuracy of data acquisition is improved.
Owner:SHENZHEN CE LANG INTELLIGENT TECH CO LTD
Industrial equipment operation data analysis method and system based on artificial intelligence, equipment and medium
The invention relates to the technical field of industrial data analysis, and discloses an artificial intelligence-based industrial equipment operation data analysis method and system, equipment and a medium, and the method comprises the steps: carrying out the dynamic noise reduction processing of the multi-source sensor data of the industrial equipment, and dynamically adjusting the size of a filtering window; performing cross-modal feature alignment on the multi-sensor data after noise reduction, and respectively extracting time-frequency domain features; constructing a lightweight state evaluation model based on the equipment maintenance knowledge base, performing equipment state evaluation on the fused features, and outputting a confidence index; performing multi-stage verification on the evaluation result, and dynamically correcting the confidence index according to the verification result; and triggering a control instruction in a grading manner according to the corrected confidence index, and completing closed-loop response from data analysis to equipment control. The method breaks through the technical bottleneck of a traditional method in a dynamic industrial scene on the premise of ensuring privacy security (data are not delivered out of a factory), and provides a standardized solution for predictive maintenance and intelligent control.
Owner:GUIZHOU POWER GRID CO LTD
Multi-frame reconstruction multispectral imaging system based on dynamic space-time joint coding
The invention discloses a multi-frame reconstruction multispectral imaging system based on dynamic space-time joint coding. The system comprises a filtering window module used for limiting the spectral range of imaging; the spatial code modulation module is used for providing spectral codes in a spatial dimension; the time coding modulation module is used for carrying out inter-frame modulation on the spectrum codes provided by the space coding modulation module; the optical imaging module is used for imaging the light field modulated by the time coding modulation module on the color acquisition module; the color acquisition module is used for carrying out further spectral coding on the light field to obtain a measurement image; a calculation reconstruction module; the method is used for recovering a high-dimensional multispectral image data cube by using a measurement image. The method has the advantages of being light in weight, low in cost, high in underqualitative relieving capacity, efficient and stable in reconstruction method, high in adaptability and practicability and the like.
Owner:NANJING UNIV
Multistage formaldehyde removing device based on photocatalyst
ActiveCN222510830Uquick releasequick installationDispersed particle filtrationStructural engineeringControl theory
The utility model relates to the technical field of formaldehyde removal, and discloses a photocatalyst-based multi-stage formaldehyde removal device which comprises a treatment box, a filter window is arranged on one side of the treatment box, a filter screen is mounted in the treatment box, two sliding columns are fixedly connected to the upper portions of the two sides of the filter screen, springs are mounted on the outer walls of the sliding columns, and the outer walls of the sliding columns are fixedly connected with the filter screen. One ends of the springs are fixedly connected to the upper portions of the two sides of the filter screen, and mounting blocks are mounted on the upper portions of the two sides of the filter screen. According to the utility model, the pushing block is pushed to enable the mounting block to slide on the sliding column, the spring is compressed, and the two fixing blocks are driven to be close to each other, so that the fixing blocks can be separated from the first mounting groove, and the fixing blocks can be reset to enter the first mounting groove under the action of the spring when the pushing block is loosened; therefore, the filter screen can be quickly disassembled and assembled, the filter screen can be conveniently cleaned, and the working efficiency and the performance stability of device operation are effectively improved.
Owner:SUZHOU DAFENG NANO TECH CO LTD
In-transit monitoring management method and system for logistics transportation
The invention relates to the technical field of data processing, in particular to an in-transit monitoring management method and system for logistics transportation, and the method comprises the steps: taking a mean value of adjacent data of any data in a vehicle speed data sequence as an ideal value of the data, calculating the noise intensity of the data, and correcting the noise intensity, the noise intensity represents the difference between the data and the ideal value, screening the corrected data with relatively low noise degree from the adjacent data of the preset filtering window of the data, adding the data into the filtering window to obtain the filtering window updated for the first time, and repeating the updating process on the basis of the updated filtering window, and calculating the optimization degree of the filtering window updated each time, performing mean filtering on the data by using the filtering window of which the optimization degree meets a preset screening condition, and monitoring the transportation process based on the filtered data. According to the invention, the accuracy of the filtered vehicle speed data is ensured, and accurate monitoring of the logistics transportation process can be realized.
Owner:MAIWEI TECH (GUANGZHOU) CO LTD
Noise reduction processing method and noise reduction processing device
A noise reduction processing method and a noise reduction processing device are provided. The noise reduction processing method comprises the following steps: applying a first filter having a first filter window to an object signal to obtain a low-frequency signal, applying a second filter having a second filter window independent of the first filter window to a high-frequency signal obtained based on the object signal and the low-frequency signal to estimate a noise intensity signal; and obtaining a low-noise signal.
Owner:SHIMADZU SEISAKUSHO LTD
Indoor image enhancement method and system
The invention relates to the field of image processing, in particular to an indoor image enhancement method and system. The method comprises the following steps: calculating the isolation degree of a gray value of an indoor image; and setting the side length of the filtering window according to the isolation degree so as to complete image enhancement. Whether the filtering windows of the pixel points corresponding to the gray values are the same or not is judged by analyzing the isolation degree of the gray values, and the effect that the side length of the filtering windows of the pixel points corresponding to the gray values with the small isolation degree needs to be calculated repeatedly is avoided. And meanwhile, the filtering accuracy of the pixel points corresponding to the gray values with relatively high isolation degree is also improved.
Owner:XIAN JIMUJIA INFORMATION TECH CO LTD
Dynamic multi-mode physiological parameter wireless acquisition system
ActiveCN119548156Aimprove accuracySensorsDiagnostic recording/measuringTransformation unitControl theory
The invention relates to the technical field of wireless acquisition of physiological parameters, in particular to a dynamic multi-modal wireless acquisition system for physiological parameters. The system comprises a physiological parameter acquisition module and a physiological parameter signal modulation module, the physiological parameter signal modulation module comprises a preamplifier and an electromyographic signal decomposition unit, electromyographic signals are subjected to modal decomposition, and an extreme value distribution comparison sequence and a signal difference comparison sequence are constructed; the comparison characteristic value unit is used for acquiring a comparison characteristic value of each modal component; the consistency coefficient unit is used for determining consistency coefficients of the electromyographic signals at different positions; the electromyographic signal filtering unit is used for adjusting a filtering window during electromyographic signal filtering; an electromyographic signal analog-to-digital conversion unit; a physiological parameter wireless communication module; and a power management module. According to the invention, the accuracy of wireless acquisition of dynamic multi-modal physiological parameters is improved.
Owner:ZHEJIANG DINO MEDICAL TECH CO LTD +1
Insect echo self-adaptive filtering method based on micro-motion phase self-correlation matching
The invention discloses an insect body echo self-adaptive filtering method based on micro-motion phase self-correlation matching, belongs to the technical field of radars, and is used for solving the problems that an existing filtering mode of the main Doppler frequency of an insect target has certain limitation, full-scene adaptation is difficult to realize by a fixed window length, and the filtering efficiency is low. And low-frequency filtering causes that the insect target in low-frequency vibration flight cannot be effectively extracted and identified. The method comprises the following steps: carrying out instantaneous Doppler frequency model modeling processing on an original insect echo signal to obtain a target instantaneous Doppler frequency model; performing smoothing processing based on different sliding window lengths on the target echo phase to obtain a micro-motion phase after the main Doppler component is filtered; carrying out self-correlation function calculation under a related self-adaptive window length on the micro-motion phase after the main Doppler component is filtered out; determining an optimal filtering window length corresponding to the current insect phase signal; and performing slow-time signal echo compensation processing on the current insect phase signal to obtain a micro-motion signal of the current insect.
Owner:ADVANCED TECH RES INST OF BEIJING UNIV OF TECH +1
A laser ranging method and a laser ranging sensor
This application relates to the technical field of laser ranging, and specifically relates to a laser ranging method and a laser ranging sensor. The method includes: obtaining a laser pulse signal emitted by a laser sensor and an echo signal received; obtaining a spectrogram of the echo signal, and extracting candidate peak points and their peak intervals; determining whether each candidate peak point is a peak point; converting the frequency-domain signal within the peak interval of each peak point to obtain a characteristic echo signal; obtaining the interference index of the characteristic echo signal corresponding to each peak point; obtaining the local signal change degree of each characteristic echo signal in each filtering window; combining the endpoint differences of the peak intervals between peak points to obtain an optimal filtering window; filtering the characteristic echo signal of each peak point, and calculating distance data according to the phase difference between the laser pulse signal and the filtered characteristic echo signal. This application aims at the ranging accuracy and efficiency of the laser ranging sensor.
Owner:BEIJING HENGRUNAN TECH CO LTD
Equipment state monitoring method and system based on data analysis
The invention relates to the technical field of data processing, in particular to an equipment state monitoring method and system based on data analysis, and the method comprises the steps: collecting pressure drop data and air velocity data of an air filter, carrying out the multiple filtering of all pressure drop data, and obtaining the final noise degree of each pressure drop data before each filtering, and judging whether the voltage drop data needs to participate in the current filtering or not based on the final noise degree of each voltage drop data, if so, adaptively adjusting the filtering window of the voltage drop data by using the final noise degree of each voltage drop data, and if not, ending the filtering of the voltage drop data. According to the method, filtering is carried out on the basis of the filtering window adjusted based on all the pressure drop data, whether the performance state of the air filter is abnormal or not is evaluated according to all the filtered pressure drop data, the whole filtering precision is improved, the authenticity of the pressure drop data is guaranteed, and accurate monitoring of the performance state of the air filter is achieved.
Owner:GUANGDONG ENG TREASURE TECH CO LTD
Positioning mapping method combined with attitude of unmanned ship
The invention relates to the technical field of navigation and positioning, in particular to an unmanned ship attitude-combined positioning mapping method, which comprises the following steps of: acquiring laser point cloud data and ship attitude information; constructing a dynamic height filtering window, and eliminating water surface reflection noise points; density clustering parameters are adjusted, and spatial isolated point clusters are eliminated; positioning and mapping are realized through tight coupling optimization; in the prior art, a fixed threshold filtering scheme is adopted, and inshore structure reservation and long-distance noise elimination are difficult to consider, so that wharfs, reefs and other characteristics in lake surface mapping are mistakenly deleted or a large number of water surface false points are remained; according to the scheme, a ship attitude adaptive dynamic height filtering window is innovatively provided, the filtering boundary is intelligently scaled in a wave disturbance environment through fusion of radar real-time height, point cloud statistics and a horizontal distance segmentation adjustment mechanism, specular reflection false points and wave false point clusters are accurately eliminated, and nearshore topographic features are completely reserved; and the structural integrity and the space authenticity of the water surface map are obviously improved.
Owner:JIANGSU UNIV OF SCI & TECH
A deep learning segmentation method for asphalt mixture CT images
A deep learning segmentation method for asphalt mixture CT images relates to the technical field of aggregate image segmentation. CT images of asphalt mixtures are collected and voids are removed. Image equalization is performed using a gamma beam hardening correction algorithm. A filter window is selected, and an adaptive bilateral filtering denoising algorithm based on local image information is used to denoise the image. The U-Net model is improved, with the Inception convolution module replacing the standard convolution operation and residual connections replacing skip-layer connections. A spatial attention mechanism is introduced, and a joint loss function is used. Image samples are selected, aggregates are labeled, and data augmentation is used to increase the sample size to form a training set for model training. After training, this set is used to segment other images. By equalizing and denoising CT images and using the improved U-Net model, the method can achieve accurate segmentation of aggregate-mortar boundary information, avoiding aggregate adhesion issues.
Owner:HARBIN INST OF TECH
Respirator device
One variation of a respirator device includes a shroud center portion, a filter assembly, and a gasket. The shroud central portion defines: a transparent central region configured to align with a user's nose and mouth; and a filter window laterally offset from the transparent central region. A filter assembly includes a filter media and a seal that: surrounds a perimeter of the filter media; the filter assembly is positioned within the filter window and defines a central groove configured to mate with an edge of the filter window to instantaneously retain the filter assembly within the filter window. The pad is disposed on the back side of the central portion of the lens and is configured to: seal against the face of the user; and positioning the lens center portion and the filter assembly offset from the user's face to form an airflow channel to direct airflow through the user's smooth cheek region.
Owner:克里斯多夫·埃斯特科夫斯基 +3
Filter window decision method and energy consumption data acquisition method, device and equipment
ActiveCN115510039BDigital data information retrievalSpecial data processing applicationsTemperature controlData acquisition
The present invention provides a method for deciding a filter window and a method, device and equipment for obtaining energy consumption data. The decision-making method includes: setting multiple groups of control parameters including setting temperature and startup number and multiple alternative filter windows with different window widths; using one group of control parameters to control multiple temperature control devices to run for a control cycle; within the control cycle, each time an observation cycle is reached, collecting energy consumption data of multiple temperature control devices; taking the end time of the control cycle as the end time of the alternative filter window, obtaining the energy consumption data collected in each alternative filter window and filtering it; determining a first comparison result expected by comparing energy consumption data corresponding to different groups of control parameters; comparing energy consumption data corresponding to different groups of control parameters when using each alternative filter window to obtain a second comparison result; comparing the two comparison results corresponding to each alternative filter window for consistency, and deciding to use the alternative filter window corresponding to the second comparison result with the highest consistency.
Owner:VERTIV TECH (XIAN) CO LTD
Primary and secondary integrated ring main unit with intelligent fault location function
ActiveCN119178962BReduced risk of excursioneasy to identifyFault locationFilter windowEnergy spectrum
The present application relates to the technical field of fault location of power systems, and specifically to a primary and secondary fusion ring network cabinet with intelligent fault location function, which includes: a ring network cabinet traveling wave signal acquisition module, which collects traveling wave signals when a transmission line fails; a ring network cabinet traveling wave signal analysis module, which divides the traveling wave signal into equal parts; according to the fluctuation degree of the signal amplitude in the signal segment, combined with the energy spectrum of the signal segment, the mutation coefficient is obtained; according to the frequency domain characteristics and frequency domain shape characteristics of the energy spectrum, the low-frequency concentration of energy is obtained; the filter window size of each sampling point in the signal segment is obtained; the ring network cabinet traveling wave fault location module filters the traveling wave signal, locates the fault, and issues instructions to the primary and secondary fusion switch. The present application aims to effectively remove the pulse noise in the traveling wave signal, retain the detailed information of the fault traveling wave signal, and enhance the accuracy of fault location.
Owner:鸿浩电力设备有限公司
Image noise reduction method and device
The invention provides an image noise reduction method and device. The method comprises the following steps: acquiring pixels of an input image; traversing each pixel of the input image, and by taking the current pixel as a center, calculating a corresponding variance map and a corresponding mean value map through a filtering window constructed by the first radius and the second radius; calculating an image low-frequency coefficient based on the variance graph; and obtaining a low-frequency image according to the low-frequency coefficient and the mean value diagram, thereby realizing noise reduction of the flat region of the image. And filtering pixel points in different directions of the current position based on a filtering window constructed by a second radius, calculating a filtering difference value between the current pixel point and the pixel points in each direction, and optimizing a filtering result in each direction through the difference value, thereby realizing protection of detail features of the image. And based on the difference value, calculating the average value of the intercepted areas, judging the area where the current pixel point is located based on the average value, and fusing the low-frequency image and the noise reduction result in each direction so as to realize differential noise reduction processing on the flat area and the detail area and obtain a final noise reduction image.
Owner:HANGZHOU JITI MICROELECTRONICS CO LTD