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49results about How to "Overcome mismatch" patented technology

Predicating method for TLE (transfer line exchanger) outlet temperatures and operation cycles of ethylene cracking furnaces

The invention relates to a predicating method for TLE (transfer line exchanger) outlet temperatures and operation cycles of ethylene cracking furnaces. The deducing of TLE heat transfer processes of industrial ethylene cracking furnaces is simplified, and is combined with empirical models of TLE coking and depositing of the industrial ethylene cracking furnaces so as to deduce parameterized prediction models of the TLE outlet temperatures and the operation cycles of the industrial ethylene cracking furnaces. Actual production data are utilized to estimate and identify model parameters, time factor corrections are performed on the identified models additionally, and online and real-time correction updates can be carried out on the TLE outlet temperature parameterized prediction models as required to expand adaptability and accuracy of the models. When TLE maximum permission upper limits and maximum operating cycles are given, the TLE outlet temperature parameterized prediction models can be used for predicating follow-up operating time of TLE systems before next decoking online and predicating the TLE operating cycles. The predicating method is simplified, reasonable in deducing, high in construction applicability, simple to operate, easy to copy, and wide in adaptability.
Owner:EAST CHINA UNIV OF SCI & TECH

Geographic position-based interest point indexing method and device, medium and electronic device

The embodiment of the invention provides a geographic position-based interest point indexing method and device, a medium and an electronic device. The geographic position-based interest point indexingmethod comprises the steps of obtaining the latitude and longitude information carried in a user request, and encoding the latitude and longitude information to obtain a corresponding target geographic block code; mapping the target geographic block code into a code of a target group containing the target geographic block; expanding the target group according to the score of the target group anda request condition carried in a user request to obtain an expansion group; and obtaining the interest points corresponding to the target group and the expansion group according to the code of the target group and the code of the expansion group. According to the technical scheme, the target group is expanded according to the interest point score, and the purpose of controlling the number and quality of the indexed interest points is achieved. Meanwhile, when the user is located at the edge of the geographic block, the problem that the interest point is not matched with the user or retrieval is incomplete can be solved through index extension.
Owner:BEIJING SANKUAI ONLINE TECH CO LTD

All-glass curtain wall support structure and installation method of all-glass curtain wall

The invention relates to an all-glass curtain wall support structure. The height of a connecting part can be adjusted by adjusting the position of a fixed part in the vertical direction of a long-waist-shaped hole or a long-stripe-shaped hole in a washer, the fixed position between the connecting part and a glass rib can be adjusted to certain extent according the fixed position between a glass panel and the connecting part, the problem that the height of the fixed position between the connecting part and the glass rib is not matched with that of the fixed position between the connecting part and the glass panel due to machining errors is solved, fragmentation of the glass rib or the glass panel is prevented, and the safety of the glass rib and the glass panel is guaranteed. In addition, due to the fact that the fixed part is located in the long-waist-shaped hole or the long-strip-shaped hole, when the the glass curtain wall is deformed slightly under the wind action, the fixed part still can not make contact with the inner walls of the top and the bottom of the washer, the gravity of the glass panel can not be transmitted to the glass rib along the fixed part, the gravity of the glass panel is all borne by a pull rod or an inhaul cable all the time, therefore, the fragmentation of the glass rib is prevented, and the safety of the glass rib is protected.
Owner:SUZHOU KELIDA PHOTOELECTRIC CURTAIN WALL

Vision and IMU sensor fusion positioning system based on dynamic object semantic segmentation

PendingCN113223045AImprove the problem of large cumulative errorEliminate the problem of unobjective scaleImage enhancementImage analysisSorting algorithmFeature extraction
The invention discloses a vision and IMU sensor fusion positioning system based on dynamic object semantic segmentation. The system comprises a front-end algorithm which is divided into a feature extraction module and a tracking module which are used for obtaining the data association of feature points, and tracking the feature points between adjacent frames through a KLT method; an instance segmentation and tracking module performs tracking by using a Deep SORT algorithm and is used for providing data association of semantic information; a dynamic object processing module identifies the dynamic feature points through a dynamic object processing algorithm, and rejects the dynamic feature points in positioning and mapping; and an IMU pre-integration module is used for carrying out integration on an IMU measurement value, IMU pre-integration is adopted as an observation value, and direct integration is carried out after a world coordinate system is converted into a local coordinate system; By utilizing the advantages of the visual sensor and the IMU sensor, the IMU sensor improves the problem of positioning failure caused by image blurring when the monocular camera moves fast; and meanwhile, the visual sensor solves the problem that the IMU accumulative error is relatively large.
Owner:北京数研科技发展有限公司

Full automatic plastic bottle pipe heating blowing machine

The invention relates to a full automatic plastic bottle pipe heating blowing machine. The heating blowing machine comprises a bottle pipe charging mechanism, a heating conveying mechanism, a blowing mechanism and a bottle leaking mechanism. The charging mechanism comprises a pipe conveying device, a pipe separating device, a pipe feeding device and a guiding device. The heating conveying mechanism comprises a bottle pipe conveying track arranged on a machine frame, and a bottle pipe supporting piece is arranged in the track. The pipe conveying device is an inclined sliding runner which has a pipe retaining plate at the outlet. The pipe separating device comprises a fixed plate and a sliding plate; a pipe separating cylinder arranged on the fixed plate drives the sliding plate; a U-shaped plate is arranged on the sliding plate; and a blowing block is arranged on a bearing plate. The pipe feeding device comprises a pipe feeding plate which has a pipe receiving port; and a pipe feeding cylinder is driven by the pipe feeding plate. The guiding device comprises a guiding cylinder which drives a guiding head. The bottle pipe conveying track is a sliding track. The supporting piece comprises sliders, and rotating shafts are arranged in the sliders. The sliders are driven to move in the sliding track through cylinders including a heating zone driving cylinder and a blowing zone driving cylinder. After entering a heating zone, the sliders are changed into a status of advancing side by side.
Owner:浙江东方州强塑模实业有限公司

Hyperspectral built-in push-broom imaging structure based on unmanned aerial vehicle and application method thereof

PendingCN111721413AOvercoming the problem of relatively low light transmittanceSave spaceRadiation pyrometrySpectrum investigationComputer hardwareImaging modalities
The invention discloses a hyperspectral built-in push-broom imaging structure based on an unmanned aerial vehicle and an application method thereof, and relates to the technical field of optical imaging. The technical problems that an existing imaging mode is complex in structural design, large in space and low in precision are solved. The system comprises an imaging lens, a detector, a system control mainboard and a system structure fixing bottom plate; one end of the imaging lens is connected with a fixed lens adapter plate, and the other end of the fixed lens adapter plate is connected witha fixed camera adapter plate; the other end of the fixed camera adapter plate is connected with the detector; the fixed camera adapter plate is further provided with a driving displacement assembly;the driving displacement assembly is located at the upper end of the detector and fixed to the system structure fixing bottom plate. According to the invention, the imaging of a real object is realized through the displacement of the detector, and the technical problems of complex structural design, large space and low precision of an existing imaging mode can be effectively solved.
Owner:SICHUAN DUALIX SPECTRAL IMAGING TECHNOLOGY CO LTD

High-precision automatic viscometer sample inlet unit and viscometer automatic sample injector

PendingCN111537391AMeet the needs of samplingOvercome mismatchFlow propertiesAutosamplerInjection equipment
The invention discloses a high-precision automatic viscometer sample inlet unit and an automatic viscometer sample injector. The high-precision automatic viscometer sample inlet unit comprises a sample injection needle guide unit, a three-way joint, a gas inlet screw and a sample injection pipe. An output port of the sample injection needle guide unit and a first interface of the three-way joint are arranged in a sealed manner, and the gas inlet screw and a second interface of the three-way joint are arranged in a sealed manner; and one end of the sample injection pipe is sealed with a third interface of the three-way joint, and the other end of the sample injection pipe is communicated with a sample injection port of a chromatographic instrument. According to the invention, the high-precision liquid sample inlet device matching the sample injection needle is arranged on a sample injection station; the high-precision liquid sample inlet device has the advantages that the sample injection requirement of the sample injection needle can be met; therefore, after each time of sample injection is completed, the device blows air to the device, so that residual samples can enter instrumentequipment, the cleanness of a sample injection pipeline is ensured, and the sample injection precision is greatly improved while a problem that an existing automatic sample injector does not match aninterface of sample injection equipment is solved.
Owner:河南阿尔法科学仪器有限公司

Bridge type input resistance negative feedback CMOS (Complementary Metal Oxide Semiconductor) pre-amplifying circuit

The invention discloses a bridge type input resistance negative feedback CMOS (Complementary Metal Oxide Semiconductor) pre-amplifying circuit, which consists of an input part and an amplification part, wherein the input part is directly coupled with the amplification part. According to the circuit, a balance bridge type input structure is adopted for the input part, 1 kilo-ohm bias resistance is adopted for each of two branch circuits of the input part, one branch circuit is connected with a detector to form a path, the other branch circuit is connected with a blind pixel to form another path, and the two paths form the balance bridge type input structure; in order to meet the requirements of different amplification factors and achieve adaptability to the amplification readout of detector signals with different response ratios, a variable gain resistance negative feedback structure is adopted for the amplification part, selectable 5, 2 or 1 meg-ohm feedback resistance is adopted between the negative input end and the output end of the amplification part, and feedback resistances with different magnitudes are formed under the control of two MOS switches; in order to enable the circuit to work at low temperature of liquid nitrogen, a common-source common-gate structure is adopted for a differential amplifier in the amplification part, and the differential amplifier is powered by positive and negative power supplies.
Owner:SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI

Sequential space-time adaptive processing parameter estimation method

The invention discloses a sequential space-time adaptive processing parameter estimation method. The method mainly solves the problems of grid mismatching, high computational complexity and the like existing in space-time two-dimensional parameter joint estimation in the prior art. The method comprises the steps that an electromagnetic pulse emitter and a uniform linear array are deployed; the linear array is used for receiving echoes reflected by peripheral objects and conducting space-time signal modeling; a sampling covariance matrix of space-time signals is calculated; a space-time power spectrum is initialized; a space-time relative probability spectrum is established and prior knowledge is extracted; time domain parameter estimation is carried out on the basis of rotation invarianceof a pulse sequence; space domain parameter estimation is carried out on the basis of rotation invariance of the uniform linear array; meshing-free space-time parameter estimation parameters are matched to finally obtain space-time parameter estimation results. According to the method, the efficiency and precision of target characteristic parameter estimation in the space-time adaptive processingprocess are improved, and the method can be applied to the fields of airborne radar detection tracking, unmanned aerial vehicle communication and the like.
Owner:ZHEJIANG UNIV

CT-CBCT image deformation registration method

The invention provides a CT-CBCT image deformation registration method. The method belongs to the technical field of medical image processing, and specifically comprises the following steps: preprocessing a CBCT image and a CT image; establishing local control points of the image A and the image B and determining fields and sizes of the control points; comparing the neighborhood gray average EA of the ith control point QAi of the image A with the neighborhood gray average EB of the ith control point QBi of the image B; and finishing deformation registration of a group of CT images and a group of CBCT images. According to the method, two-stage evaluation is adopted for control point neighborhood gray scale correction registration to judge a dark area and an artifact area, so that local gray scale correction registration is performed on two groups of images in a targeted manner according to whether the dark area exists or not and whether the artifact area exists; in addition, local control points are established on the basis of two groups of images participating in registration by utilizing gradient change characteristics and adopting a grid division mechanism, and local gray correction registration is performed on the basis of neighborhoods of the control points, so that global blind matching is avoided.
Owner:中科超精(南京)科技有限公司

Preparation method of poly-3-hexylthiophene/biomass carbon/SnO2-x nano-composite photocatalytic material

The invention discloses a preparation method of a poly-3-hexylthiophene / biomass carbon / SnO2-x nano-composite photocatalytic material. SnO2-x and biomass carbon semiconductor heterojunctions are loadedon poly-3-hexylthiophene (P3HT) in a chemical bond complexing mode to obtain the nano-composite photocatalytic material. Photo-induced electron-hole recombination in photocatalytic reaction is sufficiently inhibited by the aid of visible-light photocatalytic oxidation-reduction properties of SnO2-x, excellent electrical conductivity of the biomass carbon, electrical conductivity of the poly-3-hexylthiophene (P3HT) and a heterojunction structure with three chemically bonding components, so that the performances of photocatalytic oxidation-reduction pollutant degradation and hydrogen productionfrom photocatalytic water splitting can be improved. Besides, the problem of difficulty in recovery of powder materials can be effectively avoided by the aid of easiness in shaping of the poly-3-hexylthiophene (P3HT), so that the poly-3-hexylthiophene (P3HT) / biomass carbon / SnO2-x nano-composite photocatalytic material prepared by the preparation method is a recyclable novel environment-friendly photocatalytic material.
Owner:PINGDINGSHAN UNIVERSITY

Amorphous Silicon/Microcrystalline Silicon Tandem Solar Cell Based on Periodic Array of Nanoholes

The invention discloses a nanoporous periodic array-based amorphous silicon / microcrystalline silicon stacked solar cell. A top transparent electrode evenly covers an amorphous silicon top cell; a microcrystalline silicon bottom cell is located at the lower part of the amorphous silicon top cell and the microcrystalline silicon bottom cell and the amorphous silicon top cell form a series structure; a bottom transparent conductive oxide is located between the microcrystalline silicon bottom cell and a metal back reflection electrode; and a low-refractive index nanoporous periodic array is started on the top transparent electrode and penetrates into the amorphous silicon top cell and the microcrystalline silicon bottom cell. Cell photocurrent matching and enhancement are achieved by optimizing the material and the structure size of the nanoporous periodic array and regulating and controlling the light absorption characteristics of sub-cells; the light absorption efficiency and the photocurrent can be further improved by selecting different top transparent electrodes and bottom transparent conductive oxides; the volume of the amorphous silicon top cell can be reduced by introducing the nanoporous periodic array; the inherent light-induced degeneration effect of the amorphous silicon material is greatly reduced; and the stability is high.
Owner:ZHEJIANG UNIV

An all-glass curtain wall support structure and an all-glass curtain wall installation method

The invention relates to an all-glass curtain wall supporting structure. By adjusting the position of the fixing piece in the vertical direction of the long waist hole or the long hole in the washer, the height of the connecting piece can be adjusted, so that the fixing between the connecting piece and the glass rib The position can be adjusted according to the fixed position of the glass panel and the connecting piece, which overcomes the problem that the height of the fixed position of the connecting piece and the glass rib and the fixed position of the glass panel do not match due to processing errors, and prevents the glass rib or glass The panels shatter, keeping the glass ribs and glass panels safe. In addition, since the fixing part is located in the long waist hole or the long strip hole, after the glass curtain wall is slightly deformed by the wind force, the fixing part will still not contact the top and bottom inner walls of the gasket, so the gravity of the glass panel will not move along. The fixing parts are transmitted to the glass ribs, and the gravity of the glass panel is always fully borne by the pull rods or cables, thus preventing the glass ribs from breaking and protecting the safety of the glass ribs.
Owner:SUZHOU KELIDA PHOTOELECTRIC CURTAIN WALL
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