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Bit holder
InactiveUS6929266B2Increase speedImprove convenienceSleeve/socket jointsSpannersCoil springEngineering
A “snap-in” bit chuck assembly for a rotary hand or powered tool, includes a body having a hex shank at its rearward end and a retraction collar slidably disposed on the body. The body has a coaxial hex socket formed therein to allow a tool bit to be inserted thereinto. A coil spring biases the retraction collar forwardly and biases a retaining clip toward the bottom of an angular slot formed in the body. The bit is removed by sliding the retraction collar rearwardly, to compress the coil spring and allow the retaining clip to retract back up the slot. The bit is biased out of a locked position by a plunger that ensures that the bit remains disengaged when the retraction collar is released.
Owner:BLACK & DECKER INC
Quick-acting tool bit holder
InactiveUS7086813B1Minimize off-axis “ cocking ”Prevent over-retractionThread cutting machinesTransportation and packagingTool bitCoil spring
A “snap-in” bit chuck assembly for a rotary hand or powered tool, includes an elongated body having a hex shank at its rearward end, an elongated retraction collar slidably disposed on the body, and an outer retaining collar fixed to the forward end of the body. The body has a coaxial hex socket formed therein to allow a reversible tool to be inserted thereinto. A slot is formed in the body, between the outer surface of the body and the internal hex socket. A coil spring surrounds the body, inside the retraction collar, and normally biases the retraction collar forwardly and biases a retaining clip toward the bottom of the angular slot. The retaining clip slides outwardly in the angular slot, against the bias of the coil spring, as the reversible tool is inserted, where a recess on the reversible tool is engaged and retained by the clip. The tool is removed by sliding the retraction collar rearwardly, to compress the coil spring and allow the retaining clip to retract back up the slot. The clip is directly engaged by the coil spring and has two legs extending about the body so that the clip is self-retaining. The clip legs extend around the body such that the retraction force on the coil spring is directed through the center of the coil spring to keep it coaxially aligned with the body.
Owner:BLACK & DECKER INC
Highly wearable vacuum coating ultraviolet curing coatings
ActiveCN101157808AImprove adhesionImproved RCA wear performancePolyurea/polyurethane coatingsWear resistantLacquer
The invention relates to the electronic application-coating field, in particular to uv-curing coating with high wearing resistance and vacuum coating. The compositions and contents of the invention are: 10 wt percent to 30 wt percent of difunctional group polyurethane acrylate, 10 wt percent to 40 wt percent of high functional group polyurethane acrylate, 5 wt percent to 20 wt percent of high functional group acrylate monomer, 0 wt percent to 15 wt percent of monofunctional group acrylate monomer, 1 wt percent to 10 wt percent of acid adhesive promoter, 1 wt percent to 6 wt percent of photoinitiator, 0 wt percent to 5 wt percent of nano wearing resistance materials, 0.1 wt percent to 2 wt percent of additive and 10 wt percent to 50 wt percent of solvent. The invention is designed for providing surface protection for vacuum coating parts of electric products such as mobile phone, MP3, and digital camera, etc., and is characterized by good surface effect, good performances of ultrawear-resistance, high temperature and humidity resistance, anti-cold thermal cycling and anti-yellowing, etc., wherein, RCA wear can be up to more than 1500 times, which can effectively improve the service life of electric products. The invention effectively enhances the adhesion and wearing resistant performance of the uv-curing and vacuum coating dope, solves the matching problem of the bottom and surface lacquer of the uv-curing and vacuum coating dope, and has broad university.
Owner:HUNAN SOKAN NEW MATERIAL
Multi-vision defect detecting equipment and method for large-size LCD glass substrate in production line
ActiveCN103913468ARealize online real-time detectionReal-time communicationMaterial analysis by optical meansTransmissionProduction lineSupport vector machine
The invention discloses a multi-vision defect detecting equipment and a multi-vision defect detecting method for a large-size LCD glass substrate in a production line. For the equipment, a linear scanning imaging detection system is adopted for acquiring the high-definition gray image of an LCD glass substrate to be detected, and the equipment is simple in structure and convenient to operate; according to the method disclosed by the invention, the acquired image is processed, a kmeans clustering method is adopted to carry out defect existence judgment on the processed image of the LCD glass substrate, and by making the defect regions, the defect category is judged by a classification method of a support vector machine (SVM), and the defect quantity is counted. Processed image and detection results are transmitted to an office in real time by a filed bus control system for operators on duty to check, and the field production parameters are transmitted, so that remote monitoring of the system is realized.
Owner:HUNAN UNIV
Machining method for valve body, clamping clamp and machining equipment
ActiveCN102528538AReduce the number of clampingReduce human resource investmentMetal working apparatusPositioning apparatusMachine partsEngineering
The invention discloses a machining method for a valve body. The valve body to be machined is horizontally clamped on a workpiece revolving platform of machining equipment by using a clamping clamp, and a plane to be machined of the valve body is adjusted to be perpendicular to the workpiece revolving platform of the machining equipment, so that an intersection point of a central axis of the plane to be machined of the valve body is overlapped with a revolving center of the workpiece revolving platform, and the machining method requires that an extension line of a central axis of a cutter revolving body of the machining equipment is intersected with that of the revolving central axis of the workpiece revolving platform; and after a machining part is machined, a next machining part can be machined every time when the workpiece revolving platform is turned for an angle. The invention also discloses the clamping clamp and the machining equipment for realizing the machining method. According to the machining method, the clamping clamp and the machining equipment, all machining can be finished with one person and one machine, so that the aims of reducing the clamping frequency, increasing the machining efficiency, reducing investment in human resources and reducing manufacturing cost of a product are fulfilled. The machining method can also be used for machining a part with a plurality of machining surface perpendicular to the same reference planes, and has broad universality.
Owner:SHANGHAI HONGGONG MASCH TECH CO LTD
Machine visual on-line detection method and equipment for tank cover quality in high-speed production line
InactiveCN101799431ARealize communicationReduce dependenceOptically investigating flaws/contaminationUsing optical meansProduction lineMachine vision
The invention discloses machine visual on-line detection method and equipment for the tank cover quality in a high-speed production line. The method comprises the following steps of: in an automatic production line, separating tank covers to be detected into single tank covers moving on a delivering device; imaging the tank covers by using an imaging system at a high speed when the tank covers move to a detection station of the delivering device; transmitting an acquired tank cover image to an industrial computer for processing; carrying out quality detection on a plurality of detection areas to generate quality detection signals; eliminating unqualified products by using an eliminating device positioned at the eliminating station of the delivering device; making the qualified products continuously move on the delivering device and pass through a shaping device and outputting the qualified products in sequence. The equipment comprises a cover feeding device, the delivering device, the shaping device, the eliminating device, the imaging system, the industrial computer and an electric control system. The invention has the advantages of simple and compact structure, low cost, simple and convenient operation, high precision, high detection speed and the like.
Owner:HUNAN UNIV
High-speed dynamic simulation test method for electric mainshaft bearing
ActiveCN101975659AEasy to achieve high speedRealize stepless speed regulationMachine bearings testingComputer databasePetroleum engineering
The invention relates to a high-speed dynamic simulation test method used for an electric mainshaft bearing. The electric mainshaft bearing comprises a frame, a main body pedestal, an axial loading cylinder, a test head assembly, a main body gland, a radial loading cylinder, a shaft coupling, a protecting hood, an electric mainshaft, a lubricating oil pipe, an axial loading oil pipe, a vibration sensor, a radial loading oil pipe and a temperature sensor and also a final assembly of all the parts. A hydraulic loading system is started to provide pressure oil to the axial loading cylinder and the radial loading cylinder, the electric mainshaft drives a test mainshaft to rotate, the radial loading cylinder exerts radial force on a first test accompanying bearing and a second test accompanying bearing through a radial loading sleeve, and the radial loading cylinder exerts axial force on a first test bearing and a second test bearing through an axial loading sleeve. The entire test is controlled by a computer to display parameters of the rotating speed, the axial load and the radial load, the oil pressure, the cooling water temperature, the bearing temperature, the bearing vibration, the power current of the electric mainshaft and the test time, and the parameters are saved in a computer database and analyzed.
Owner:国创(洛阳)轴承产业技术研究院有限公司
Inertial navigation system based on smart phone and method thereof
ActiveCN102944240AImprove accuracyImprove practicalityNavigational calculation instrumentsNavigation by speed/acceleration measurementsGyroscopeSimulation
The invention, relating to the field of wireless positioning and inertial navigation, provides an inertial navigation system based on a smart phone and a method thereof. The method is characterized by designing a step count algorithm based on a limit state machine to calculate the steps of a person and acquire the beginning and ending time stamps of each step, and calculating the direction change of each step of the person according to the data read by a three-axis gyroscope and the beginning and ending time stamps of each step; according to different accelerated speeds generated by people having different step sizes, estimating the step size of the person; then according to the coordinate of the starting point of the path and by combining the step size and the direction change, calculating the coordinate of each step relative to the starting point of the path; and acquiring the movement track of the person by the coordinate of each step relative to the starting point of the path. According to the invention, high precision of inertial navigation can be achieved with no need for a high precision expensive inertia sensor, the accuracy is high, the practicality is strong, the versatility is wide, and the cost is low.
Owner:TSINGHUA UNIV
Video subtitle information extracting method
InactiveCN101453575AImprove recognition accuracyFast recognitionTelevision system detailsColor television detailsMulti dimensionalVideo image
The invention provides a method for extracting video subtitle information, which comprises: preprocessing video images of which subtitles are required to be extracted; performing multi-dimensional subtitle region detection on the preprocessed video images, and obtaining rectangular blocks which represent the dimension and the position of subtitle regions; utilizing the rectangular blocks to split detected subtitle regions; enhancing the contrast of split subtitle regions; and adopting a K mean cluster method to realize extraction of the subtitles. The method has commonality on different language types, different fonts and different dimensions of the subtitles and different video program types, has the advantages of high accuracy of subtitle region detection and character recognition and high speed, does not need to perform model training under the condition of subtitle region detection, and reduces the possibility of influence of poor model training on prediction results.
Owner:INST OF COMPUTING TECH CHINESE ACAD OF SCI
Rolling bearing fault feature extraction method based on signal sparse representation theory
InactiveCN105241666AWide versatilityReduce pointsMachine bearings testingDamping ratioAdaptive method
The invention discloses a rolling bearing fault feature extraction method based on the signal sparse representation theory, and the method comprises the following steps: constructing an over-complete dictionary representing local damages of a rolling bearing through employing a multi-stage inherent frequency unit impulse response function; recognizing the multi-stage inherent frequency and damping ratio of the rolling bearing and a sensor system from a vibration response signal through a related filtering method, and obtaining an optimized dictionary; solving a sparse coefficient through employing a matching tracking algorithm, and improving the solving speed and precision through reasonable segmentation; reconstructing an impact response signal of each segment, and obtaining the sparse representation of a fault feature signal; carrying out time domain index statistic characteristic analysis of time intervals of adjacent impact response components in a sparse signal, and diagnosing the type of a fault through combining a mean value and a mean square deviation value. The method has the advantages of an analytical method and an adaptive method, improves the precision of waveform features, and can iron out the defects that a conventional method based on Fourier transform is not suitable for rotating speed fluctuation.
Owner:SOUTH CHINA UNIV OF TECH
Antimicrobial polyamide material and preparation method thereof
The invention relates to the technical field of polymer plastics and discloses an antimicrobial polyamide material and a preparation method thereof. The antibacterial polyamide material consists of the following components: polyamide resin, an antimicrobial agent, a compatibilizer and an antioxidant. One purpose of the invention is to provide the antimicrobial polyamide material which is non-toxic, antibacterial, natural and environmentally-friendly; and the other purpose of the invention is to provide the preparation method of the antimicrobial polyamide material, wherein the preparation method is simple and environmentally-friendly in process.
Owner:SHENZHEN KEJU NEW MATERIAL
Full working stroke thermal error compensation method of numerically-controlled machine tool feeding system and implementation system thereof
InactiveCN102672527AInfluence of machining accuracyImprove machining accuracyAutomatic control devicesFeeding apparatusNumerical controlCompensation effect
The invention discloses a full working stroke thermal error compensation method of a numerically-controlled machine tool feeding system and an implementation system thereof. Reduction of whole machine machining accuracy is mainly caused by thermal errors of the numerically-controlled machine tool feeding system, and a whole set of the technical scheme for measuring, analyzing and compensating the feeding system is provided. Application techniques of thermal error measurement, thermal key point identification, thermal error compensation modeling and thermal error on-line compensation of the numerically-controlled machine tool feeding system under typical working conditions are surveyed. On that basis, a thermal error on-line compensation system of the numerically-controlled machine tool feeding system is constructed. Taking an X-direction high-speed feeding system of a Longmen numerical control machining center in a certain model as an example, measurement, analysis and modeling compensation of the thermal errors are carried out respectively, and compensation effects are obvious. The full working stroke thermal error compensation method can be used for solving the thermal error compensation problem of the numerically-controlled machine tool feeding system and provides technical supports for machining accuracy and stability of a numerically-controlled machine tool.
Owner:SICHUAN UNIV
Synthetic method of metal organic skeleton membrane
ActiveCN104959044ASolve the problem of continuous growthSimple methodSemi-permeable membranesSynthesis methodsMetal-organic framework
The invention provides a synthetic method of a metal organic skeleton membrane. Firstly, metal salt A is added to a solvent A, so as to be mixed and dispersed, then a stabilizing agent is added to mix and react, so as to obtain metal-sol, a substrate is immersed in the metal-sol for soaking or ultrasonic shaking for 5 to 60 min, and then the substrate is taken out and dried for 2 to 4 h at 60 to 180 DEG C, so as to obtain the substrate containing the metal-sol; then organic ligands, metal salt B and a solvent B are mixed and uniformly stirred, so as to obtain a synthetic solution; subsequently, the substrate containing the metal-sol is immersed in the synthetic solution for solvothermal synthesis, and a synthetic membrane is taken out, flushed and dried after a reaction system is cooled, so as to obtain the metal organic skeleton membrane. According to the synthetic method, the continuous dense metal organic skeleton membrane can be obtained, and metal organic skeleton materials are synthesized in a duct, so as to increase the rigidity and compressive strength of the membrane; the synthetic method is suitable for substrates of various materials and configurations and has the advantage of wide application prospect.
Owner:ZHEJIANG UNIV OF TECH
High-temperature high-speed test method for sealed bearing
InactiveCN101718625AImprove the state of stressEasy to achieve high speedMachine bearings testingElectricityComputer control system
The invention relates to a high-temperature high-speed test method for a sealed bearing, which comprises the following steps of: firstly designing a testing device, installing two sets of testing accompanying bearings on a testing main shaft, and pretightening through a set of spring and a pressure ring; installing the two sets of testing bearings at the left end and the right end of the testing main shaft, connecting an electric main shaft through a shaft coupling and additionally covering a shield; starting cooling circulating water, adding cooling water into a loading sleeve, starting a hydraulic station, an electric main shaft variable-frequency driving system and a computer control system, applying 20-30 percent of the maximum axial test load and 20-30 percent of the maximum radial test load to the testing bearings, starting the electric main shaft to reach 15-20 percent of the highest rotational speed and running for 15-25 minutes after the heating temperature reaches a set value, and then sequentially adding axial loads and radial loads and increasing the rotational speed of the electric main shaft so as to reach the highest rotational speed when the power consumption current of the electric main shaft tends to be steady; and carrying out computer data processing for the data and images in different time periods of the whole testing process and working out a test conclusion.
Owner:LUOYANG BEARING SCI & TECH CO LTD
Automatic feeding device with robots
ActiveCN105197584AIncrease freedomHigh positioning accuracyConveyor partsEngineeringMechanical engineering
The invention relates to an automatic feeding device with robots. The automatic feeding device is used for carrying workpieces to a specified station. The automatic feeding device comprises a frame table, a PLC system arranged on the frame table and a feeding system arranged on the frame table and connected with the PLC system. The feeding system comprises five parts including a feeding mechanism, a positioning conveying mechanism, a vision mechanism, a vacuum conveying mechanism and an empty-tray discharging mechanism. A tray fully loading the workpieces is conveyed to the positioning conveying mechanism to be fixed and locked through the feeding mechanism, the workpieces in the tray are all carried to the specified station through the vacuum conveying mechanism under the assisting of the vision mechanism, then the tray is conveyed to the empty-tray discharging mechanism through the positioning conveying mechanism, and the tray is conveyed out through the empty-tray discharging mechanism. Compared with the prior art, the automatic feeding device has the advantages of being high in adaptability, wide in universality, high in feeding speed, low in workpiece damaging risk and the like.
Owner:SHANGHAI WEISONG IND AUTOMATION
Construction method for two-block unballasted track bed board
InactiveCN101503870AAchieve precise positioningTooling system is simpleRailway track constructionEngineeringRebar
The invention relates to a construction method for a double-block-type ballastless track bed slab, which comprises the following steps: 1, clearing a base surface and performing construction lofting; 2, placing a bottom layer of reinforcing steel bars, and laying sleepers; 3, mounting a tool track and adjusting the sleepers; 4, assembling track panels; 5, coarsely adjusting the track panels; 6, binding the reinforcing steel bars and performing earthing welding; 7, mounting templates and finely adjusting the track; 8, casting concrete into the track bed slab; 9, loosening adjusting devices and fasteners, and curing the concrete; and 10, relocking the tool track and completing the measurement. The construction method has the advantages that: the tool track is adopted as a detection standard, so the precise positioning of the track is realized; a frock system is simple, is easy to process and manufacture, has wide commonality, and is not only suitable for construction of the track bed slab in a subgrade section but also suitable for construction of the track bed slab in a bridge section; the construction process is simple and quick, and various working procedures are easily carried out by flow construction; and the construction cost is low, so the construction investment is effectively saved.
Owner:THE 8TH GRP OF CHINA RAILWAY 1ST ENG CO LTD
Method for registering complex curved surface
ActiveCN101692257AWide versatilityOvercome the shortcomings of high initial value requirementsMeasurement devicesSpecial data processing applicationsTheory modelMeasurement point
The invention relates to a method for registering a complex curved surface. A system in the method comprises a curved surface CAD design model, a three-coordinate measuring machine and a registering solver, wherein the curved surface CAD design model comprises geometric information of the curved surface; after the geometric information of the curved surface is extracted, a curved surface NURBS model is constructed; the three-coordinate measuring machine detects a curved surface real object prototype, and acquires measuring point data; and the registering solver registers the measurement data of the curved surface NURBS model and the curved surface real object prototype by adopting a genetic algorithm. Compared with the prior art, the method has the advantages of accurate theory model, high registering stability, good registering accuracy, capability of achieving multidimensional variable registrations, and wide application range.
Owner:EAST CHINA UNIV OF SCI & TECH
Aluminum alloy digital electronic product case and application thereof
ActiveCN103484737AWide versatilityExcellent Die CastingSurface reaction electrolytic coatingMetal casingsDie castingMechanical property
The invention provides an aluminum alloy digital electronic product case. An aluminum alloy comprises the components in percentage by weight as follows: 4.5-4.8% of Zn, 1.8-2.0% of Cu, 1.6-1.8% of Mg, 2.2-2.5% of Si, 0.05-0.1% of Zr, 0.4-0.6% of Ni, 0.5-1% of Ti and the balance of aluminum and inevitable impurities. To be specific, the aluminum alloy with excellent die casting and anodic oxidation properties for the case is obtained through simple alloy elements and moderate matching firstly, meanwhile, appropriate raw materials and a melting process are adopted, the die casting and mechanical properties of the alloy are guaranteed, an optimal anoxic oxidation treatment process and parameters are selected after die casting, so that the die-casting aluminum alloy with excellent properties for a digital electronic product is obtained, and then the digital electronic product case is obtained finally through shaping and coating.
Owner:苏州利达铸造有限公司
Structures for edge treatment and for decoration of counters and panels, and for the assembly thereof
InactiveUS20020178684A1Improve versatilityWide versatilityBuilding componentsFittingFastenerEngineering
There is disclosed a family of structurally related extrusions which find broad utility as edge and comer trim and connectors for counter tops, cabinet faces and other sheet-like panels. The extrusions serve as joinders or couplers to cover and to protect exposed edges of the panels, to increase the load capacity of the panels, and to enhance the visual appearance thereof. In a preferred embodiment of the invention the extrusion defines spaced parallel arms forming a U-shaped channel into which an elongate edge of the panel is slidably received. Integrally-formed extensions of the arms define flanges forming coextensive opposed upper and lower slots for securing a decorative plate-like band to seat therewithin along a lineal expanse of the elongate extrusion. A wall bridging between upper and lower arms of the extrusion is formed with post means for insertion of a screw-like fastener therethrough for securing the extrusion in place against the presented end face of the sandwiched panel. In another embodiment of the invention the extrusion constitutes an integrally formed structural combination of two pairs of the basic components of the invention to define a unitary assembly for capping and securing a corner-defining juncture of a pair of structural panels. The provision of shims, readily insertable into the panel-receiving channel of the extrusion, imparts important versatility to the extrusion, facilitating accommodation of countertops, sheets or panels of various thickness dimensions.
Owner:BARNETT HARRY
Full-automatic branch trimming robot and method
ActiveCN105794502ARealize automatic identificationRealize computingCuttersCutting implementsTerrainOperational costs
The invention relates to a full-automatic branch trimming robot.The full-automatic branch trimming robot is composed of an all-terrain chassis movable platform, an electronic control unit, a separable tail-end execution unit, a mechanical arm, an execution unit releasing and withdrawing mechanism, a visual navigation mechanism and a high-capacity lithium battery.The brand-new branch trimming robot for high trunks is designed, automatic identification, calculation, measurement and trimming of tree trunks are achieved, and the invention further provides a corresponding mechanical structure and trimming steps and method related to electrical connection; the voids of a full-automatic trimming robot and a high-altitude tree trimming robot on the present market are filled, the efficiency of branch trimming is improved, the labor intensity of workers is reduced, and the operating cost of social public services is reduced.
Owner:SHANDONG GUOXING SMARTECH CO LTD
Continuum area surface layer high precision static correction method
ActiveCN101393270AAvoid artificial layering errorsWide applicabilitySeismic signal processingLow speedCurve fitting
The invention relates to a geophysical exploration technology. The technology is high precision static correction method for a surface layer of a surface layer continuous medium area of seismic exploration data and comprises the steps: acquiring the elevation of a high-speed top interface and the thickness of a low-speed zone by a micrologging method; acquiring the near ground surface initial speed of each micro-logging point by performing conic fitting on the time-depth relationship of each mircologging in the area; performing interpolation according to the change of the plane position to acquire continuously-changing time-depth relationship in space of the whole area and a three-dimensional data volume; calculating the static correction of the low-speed zone and other static correction; and using a common method to perform seismic data processing on the static correction so as to acquire reflected wave imaging with high resolution. The technology can avert human delamination error at the near ground surface difficult to declaminate, and has wider applicability and commonality as well as higher precision compared with a sand dune curve.
Owner:BGP OF CHINA NAT GASOLINEEUM CORP
High-damping and high-strength Mg-Cu-Mn-Zn-Y alloy and manufacturing method thereof
InactiveCN101805864ASolve the mechanical propertiesImprove mechanical propertiesQuasicrystalDislocation
The invention relates to high-damping and high-strength Mg-Cu-Mn-Zn-Y alloy and a manufacturing method thereof. The high-damping and high-strength Mg-Cu-Mn-Zn-Y alloy is characterized by comprising the following alloying element components distributed in the alloy and the content value thereof in percent by weight: 1.0%-4.0% of Cu, 0.3%-1.5% of Mn, 0.3%-4.0% of Y, 1.0%-5.5% of Zn and the balance of magnesium. In order to solve the conflict of the damping property and the mechanical property of the magnesium alloy, the invention puts forward the fact that a Zn element and a Y element are added in the high-damping Mg-Cu-Mn alloy so that the Mg, the Zn and the Y form quasicrystals and / or long-prepared phases in the alloy, the quasicrystals or the long-prepared phases can introduce a great amount of new movable dislocations in a magnesium matrix, the damping property of the magnesium alloy is improved through movable dislocations newly increased in the magnesium matrix, and then the conventional heat extrusion is carried out on the alloy so that the mechanical property of the alloy is improved. The invention has the advantages of simple process, strong transportability, easy operation and lower cost and solves the problem that the Mg alloy has limited application due to high damping property and low mechanical property, and the used equipment is conventional and general equipment.
Owner:CHONGQING UNIV
Alloy material with high strength as well as ductility and semi-solid state sintering preparation method and application of alloy material
Owner:SOUTH CHINA UNIV OF TECH
Sparse-decomposition-based hybrid fault feature extraction method of gear wheel and bearing
ActiveCN105424359AWide versatilityEffectively identify distributed faultsMachine gearing/transmission testingMachine bearings testingFrequency spectrumFeature extraction
The invention discloses a sparse-decomposition-based hybrid fault feature extraction method of a gear wheel and a bearing, wherein the method can be used for diagnosing a hybrid fault formed by a distributed gear wheel fault and a local gear wheel and bearing fault in a gear case. When a steady modulation dictionary is constructed, atomic parameter optimization is carried out by using a discrete frequency spectrum correction technology, thereby improving precision of steady modulation component separation. When an impact modulation dictionary is constructed, an over-complete dictionary using a multi-stage inherent-frequency unit impulse response function as an atom is established and the inherent frequency and the damping ratio are identified in a self-adapting mode from a fault vibration signal, so that an impact response waveform caused by local faults of the gear wheel and the bearing can be represented well. After optimization of the steady modulation dictionary and the impact modulation dictionary, the dictionary redundancy is substantially reduce; and with a segmented matching tracking method, the point number of inner product calculation during the sparse coefficient solving process is reduced. On the basis of the two kinds of measures, the speed of signal sparse decomposition is improved.
Owner:SOUTH CHINA UNIV OF TECH
Method for synthesizing metal organic skeleton composite film under action of assisted deposition of catechol compounds
The invention provides a method for synthesizing a metal organic skeleton composite film. The method comprises the steps: adopting catechol compounds firstly to assist deposition and modify the surface of a substrate so as to provide more heterogeneous nucleation sites for synthesis of the metal organic skeleton material, and then synthesizing the continuous and dense metal organic skeleton composite film under certain conditions. The method has wide versatility, can be applied to substrates of multiple materials and configurations, can be applied to synthesis of multiple types of metal organic skeleton composite films, and has a good application value and prospect.
Owner:ZHEJIANG UNIV OF TECH
Intelligent parking system
InactiveCN106355702ALow costEasy to manageIndication of parksing free spacesIndividual entry/exit registersStatistical analysisComputer terminal
The invention discloses an intelligent parking system. The intelligent parking system comprises access controller, subscriber terminal, cloud server, and data statistics and big data interface module. The module is used for statistical analysis on the visit record on the cloud server. Dry contact external control (i.e. switching value control) is adopted for the access controller without needing to replace existing barrier gate and controller, the only requirement lies in adding the invention to the side of the existing controller to run the access controller, which meets the requirement of over 95% of the parking lot system. The invention is wide in application without needing to refit the system, low in cost; the intelligent parking system has a strong function concerning visit management through direct management of cloud server, and enable the parking lot, the traditional security and protection system, no longer to be restricted to the LAN computer management. The innovative application of interactive mode of QR code and the parking lot will make it easier to share the 'traffic permit' to the visitors and the employees. Thus, the invention has a wide promotion value and practical application significance.
Owner:QINGDAO ELINK INFORMATION TECH
Brain disease diagnosis method based on 3D convolutional neural network
InactiveCN110739070AEliminate differencesHigh precisionMedical automated diagnosisNeural architecturesMedicineDiagnosis methods
The invention relates to a brain disease diagnosis method based on a 3D convolutional neural network. The method comprises the following steps: 1) acquiring MRI brain image data samples of normal states and diseases; 2) performing sample pretreatment: brain tissue extraction and sample standardization; 3) designing a 3D convolutional neural network for brain disease diagnosis; 4) taking the MRI brain image as the input of the 3D convolutional neural network, performing network training, extracting features, and establishing a classification diagnosis model; 5) preprocessing the MRI brain imageof the to-be-detected person, sending the preprocessed MRI brain image as input to the 3D convolutional neural network diagnosis model to obtain an output label, and judging whether the to-be-detected person is sick or not. The method has the advantages that 1) the brain disease diagnosis model is established by using the 3D convolutional neural network, and features are automatically learned from MRI brain images; a multi-hidden-layer deep learning model is constructed, accurate and effective features are automatically obtained by a computer, and finally the precision and generalization ability of the diagnosis model are improved; 2) the method is suitable for diagnosis of various different types of brain diseases such as Alzheimer's disease, depression, children hyperactivity and the like.
Owner:NANJING UNIV OF TECH
Method for enriching glycopeptide by phenylboronic acid material
ActiveCN104374848AEfficient enrichmentHigh selectivityComponent separationPhenylboronic acidOrganic solvent
The invention discloses a method for enriching glycopeptide by a phenylboronic acid material. The glycopeptide is selectively enriched through optimizing the kind and concentration of an organic solvent, the kind and concentration of a buffer salt, the enrichment temperature and other parameters with phenylboronic acid modified silicon spheres as an enrichment material. The method has the characteristics of high selectivity, high adsorption amount, simple and controllable operation and the like, and is suitable for the selective enrichment of glycopeptides in a biological sample.
Owner:ZHANGJIAGANG IND TECH RES INST CO LTD DALIAN INST OF CHEM PHYSICS CHINESE ACADEMY OF SCI +1
Latex reinforced immunoturbidimetric reagent for inhibiting rheumatoid factor interference
The present invention discloses a latex reinforced immunoturbidimetric reagent for inhibiting rheumatoid factor interference, wherein the latex reinforced immunoturbidimetric reagent comprises a reagent R1 and a reagent R2, the reagent R2 comprises latex micro-particles, and the PH value of the reagent R1 is 5.5-6.0. According to the present invention, the latex reinforced immunoturbidimetric reagent has characteristics of simple composition and good versatility, and with the latex reinforced immunoturbidimetric reagent, the interference of most of the rheumatoid factors can be effectively eliminated, and the specificity and the accuracy of the detection result can be improved.
Owner:NINGBO RUI BIO TECH
Simulation device of load data processor and implementation method thereof
ActiveCN103309780AImplement joint debuggingImplement hierarchical test diagnosticsDetecting faulty computer hardwareSoftware simulation/interpretation/emulationStatic random-access memoryParallel computing
The invention relates to a simulation device of a load data processor and an implementation method thereof, and belongs to the field of satellite test. The invention aims to solve the problems of high cost, low test safety and reliability and low test efficiency caused by that the test process of the existing satellite data transmission subsystem is performed in the sky. The simulation device of the load data processor comprises a field programmable gate array (FPGA), a signal isolation circuit, a PXI bus interface circuit, a low voltage differential signaling (LVDS) receiving and transmitting interface circuit and an RS-422 data receiving and transmitting circuit, wherein the LVDS receiving and transmitting interface circuit comprises an LVDS receiving interface circuit and an LVDS transmitting interface circuit; and the RS-422 data receiving and transmitting circuit comprises an RS-422 synchronous receiving interface circuit, an RS-422 asynchronous receiving interface circuit and an RS-422 transmitting interface circuit. The simulation device of the load data processor also comprises a static random access memory (SRAM) cache. The simulation device of the load data processor is applied to test of a satellite data transmission subsystem.
Owner:HARBIN INST OF TECH
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