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Gene detection data cleaning method and system based on artificial intelligence
InactiveCN119418762Aimprove accuracyincrease flexibilityBiostatisticsProteomicsGenomicsRepetitive Sequences
The invention relates to the technical field of genomics, in particular to a gene detection data cleaning method and system based on artificial intelligence. The method comprises the following steps: acquiring gene detection data, and performing preliminary filtering on the gene detection data based on removal of low-quality reads to obtain preliminary filtering data; performing linker sequence identification and removal on the preliminarily filtered data, and performing sequencing error correction to generate gene sequence data; performing GC content analysis and repetitive sequence identification on the gene sequence data to obtain sequence feature data; performing dynamic quality threshold adjustment according to the sequence feature data, and performing secondary filtering on the gene sequence data to generate high-quality sequence data; and performing sequence pattern recognition on the high-quality sequence data to obtain sequence pattern feature data. According to the method, deep analysis is carried out by utilizing sequence characteristics such as GC content and nucleotide distribution, and the recognition capability on sequence complexity and variation modes is improved.
Owner:SICHUAN BAIYUE BIOTECHNOLOGY CO LTD
Maritime work crane with windproof high-stability structure
ActiveCN119191116AImprove control stabilityReduced stabilityLoad-engaging elementsCranesMarine engineeringGear wheel
The invention discloses a maritime work crane with a windproof high-stability structure, and belongs to the technical field of maritime work cranes, the maritime work crane is provided with a supporting column convenient to position and assemble, the upper surface of the supporting column is rotatably connected with a suspension arm, the inner surface of the suspension arm is telescopically connected with a telescopic arm, and the front side of the inner surface of the telescopic arm is rotatably connected with a guide wheel; comprising a main lifting rope rotationally connected to the outer surface of the guide wheel, and the lower side of the main lifting rope is installed on the lower surface of the telescopic arm. An angle monitoring mechanism is arranged, the angle of the rotating frame on the telescopic arm can be conveniently controlled, adjustment of a first straight tooth gear and a first rack can be matched, so that the rotating stability of the rotating frame is controlled, and adjustment of a clamping jaw and a limiting wheel is matched, so that the angle of the clamping jaw on the rotating frame is driven through the limiting wheel; therefore, the angle stability of the clamping jaw and the angle monitoring convenience of the main lifting rope are controlled, lifted goods are prevented from inclining, and danger is avoided.
Owner:TIANJIN JINDAO HEAVY IND MASCH CO LTD
Electric cabinet remote data acquisition system based on Internet of Things
PendingCN119652925Areduce error rateAccurately verify integrityError detection/prevention using signal quality detectorSecuring communicationComputer networkPacket loss
The invention provides an electric control box remote data acquisition system based on the Internet of Things, and relates to the technical field of data processing, and the method comprises the steps: obtaining the operation state data of an electric control box through a sensor, transmitting the operation state data through a wireless signal network, obtaining a data frame set, analyzing the data identifier of each data frame, verifying the integrity of the data, and obtaining the data frame set; determining performance parameters of the wireless signal network, detecting whether an abnormal change occurs in the transmission process, generating a solution when the abnormal change occurs, generating a retransmission signal when packet loss occurs in the transmission process, determining a retransmission queue according to the data identifier, and transmitting the retransmission signal according to the retransmission queue when delay occurs in the transmission process. The priority of a retransmission queue and the distribution of network bandwidth are dynamically adjusted, and when signal attenuation occurs in the transmission process, the execution sequence is adjusted according to the operation record and result of a solution by switching a transmission channel and adjusting transmission power. The transmission process of the operation data of the electric control box can be detected.
Owner:ZHANGZHOU LONGWEN CHENAN ELECTRONICS CO LTD
Transition metal nitride and amorphous carbon composite coated and modified lithium manganese iron phosphate composite material as well as preparation method and application thereof
ActiveCN119100353Astable structureDissolution inhibitionMaterial nanotechnologyNitrogen-metal/silicon/boron binary compoundsElectrical batteryLithium-ion battery
The invention discloses a transition metal nitride and amorphous carbon composite coated and modified lithium manganese iron phosphate composite material as well as a preparation method and application thereof, and belongs to the technical field of lithium ion batteries. The vanadium nitride / amorphous carbon is adopted to perform composite coating modification on the lithium manganese iron phosphate material, so that the composite positive electrode material is more stable in structure. The use of vanadium nitride reduces the coating amount of carbon, and avoids the problems of coating layer thickening caused by high carbon content and Li < + > diffusion hindering caused by reduction of tap density of active substances. Vanadium nitride not only has good conductivity, but also has good Li < + > conductivity transmission performance, Li < + > de-intercalation can be rapidly achieved, the conductivity of the material is improved, meanwhile, a Li < + > diffusion channel on the surface of the positive electrode material is further dredged and increased, and the capacity loss of the modified material is reduced.
Owner:安徽得壹能源科技有限公司
Music sharing method and system based on intelligent Bluetooth headset and Bluetooth headset
InactiveCN119212026Afirmly connectedreduce transfer timeEarpiece/earphone attachmentsShort range communication serviceData transmissionEmbedded system
The invention relates to the technical field of music sharing, and particularly discloses a music sharing method and system based on an intelligent Bluetooth headset and the Bluetooth headset. Comparing the working state signal interference evaluation parameters of each Bluetooth earphone with a working state signal interference evaluation parameter threshold value of the Bluetooth earphone, and if the working state signal interference evaluation parameter of a certain Bluetooth earphone is greater than the working state signal interference evaluation parameter threshold value of the Bluetooth earphone, switching a working channel of the Bluetooth earphone; according to the method, the quality of each channel is evaluated, the to-be-adjusted Bluetooth headset is subjected to channel switching according to each channel switching reference index of the to-be-adjusted Bluetooth headset, and the working channels of the Bluetooth headset are dynamically switched, so that the Bluetooth headset can be helped to maintain stable connection, disconnection or unstable signal conditions are reduced, and the service life of the Bluetooth headset is prolonged. And the data transmission rate can be improved, and congestion is reduced.
Owner:NANXIONG SANSHENG INTELLIGENT ELECTRONICS CO LTD
Dissimilar metal power modulation galvanometer laser welding method
InactiveCN119566523Areduce thicknessImprove uniformityWelding/soldering/cutting articlesLaser beam welding apparatusShielding gasWeld seam
The invention belongs to the technical field of welding, and discloses a dissimilar metal power modulation galvanometer laser welding method which comprises the following steps: finely cleaning a 6061 aluminum alloy and a 304 stainless steel plate by using acetone, and then airing for more than 20 minutes; the aluminum steel sheet is assembled, pressed and fixed on a welding test platform in a steel-up-aluminum-down mode; the position of the welding test platform is adjusted, argon serves as welding protection gas, and a protection gas nozzle is arranged to be aligned with a welding pool area; laser welding parameters are set, a laser power modulation mode is set to be a gradient power mode, and the gradient power mode is to regulate and control phase point laser power in a circular scanning track in the advancing direction of a welding seam; a welding test is carried out in the mode that a galvanometer laser head is fixed and a welding test platform is moved, and a laser and the welding test platform are synchronously started and stopped; and the protective gas is started 5 seconds before the laser is started, and after the laser is stopped, the protective gas is stopped lagging for 10 seconds so as to continuously protect the welding seam and prevent oxidation.
Owner:LANZHOU UNIVERSITY OF TECHNOLOGY
Industrial robot with load capacity
The invention belongs to the technical field of robots, and particularly relates to an industrial robot with load capacity. The robot comprises a base. A rotating arm is rotationally mounted on the base; a big arm is rotationally mounted on the driving mechanism in the rotating arm; a small arm is rotationally mounted on the driving mechanism at the top of the large arm; a manipulator is mounted on the small arm; a reinforcing plate is mounted on the side, away from the manipulator, of the large arm; a mounting plate is fixedly mounted on the side, away from the large arm, of the reinforcing plate. A circular groove is formed in the end surface of one side of the mounting plate; a rotary disc is rotationally connected into the circular groove through a rotary shaft. A rotating rod is rotationally connected to the edge position of the rotating disc; a small arm balance mechanism is arranged on the mounting plate and the small arm; a big arm balance mechanism is arranged on the rotating arm and the big arm; by arranging the large arm balance mechanism and the small arm balance mechanism, loads generated when the large arm and the small arm grab heavy objects can be balanced, and therefore the loads borne by the large arm and the small arm in the working process are reduced.
Owner:YANTAI AIDI AICHUANG ROBOT TECH CO LTD
Preparation method of self-humidifying membrane electrode of proton exchange membrane fuel cell
InactiveCN119419320Asynthesis fastReduce energy consumptionCell electrodesFuel cellsIonomerPtru catalyst
The invention discloses a preparation method of a self-humidifying membrane electrode of a proton exchange membrane fuel cell, relates to a preparation method of a membrane electrode, and aims to solve the technical problem of poor performance of the conventional self-humidifying membrane electrode. The method comprises the following steps: 1, synthesizing a COFs material by using 2, 4, 6-triformyl phloroglucinol and 2, 5-diaminobenzene sulfonic acid through a two-phase method; 2, preparing slurry a by using a Pt / C catalyst and a perfluorosulfonic acid ionomer solution; preparing self-humidifying catalyst layer slurry b from a COFs material, a Pt / C catalyst and a perfluorosulfonic acid ionomer solution; and 3, coating the slurry a on the anode surface of the proton exchange membrane, and coating the slurry b on the cathode surface to obtain the self-humidifying membrane electrode. According to the electrode, H2 / O2 is used as fuel, and the power density is 756.3 mW / cm < 2 > under the relative humidity of 20%; h2 / air is used as fuel, the power density is 437.8-879.7 mW / cm < 2 > under the relative humidity of 50%, and the material can be applied to the field of fuel cells.
Owner:HARBIN INST OF TECH
Vehicle service processing method and system, vehicle and storage medium
The invention discloses a vehicle service processing method and system, a vehicle and a storage medium. The method comprises the following steps: obtaining a service request of a client, the service request being used for requesting to distribute an application service of a vehicle to the client; a routing strategy is called, identification information in the service request is identified, the routing strategy is used for representing a rule for routing the service request, and the identification information is used for identifying a service instance of the application service; in response to the fact that the identification information is gray scale identification information, a gray scale service instance corresponding to the gray scale identification information is determined, and the gray scale service instance is used for representing a service instance to be published by the application service; and routing the service request to the grayscale service instance to publish the grayscale service instance to the client. The technical problem that the service processing efficiency of the vehicle is low is solved.
Owner:GUANGZHOU XIAOPENG MOTORS TECH CO LTD
Image-to-video cross-modal adversarial sample generation method based on key frame identification
ActiveCN119295861AHigh positioning accuracyaccurate extractionCharacter and pattern recognitionFrame sequenceEngineering
The invention discloses an image-to-video cross-modal adversarial sample generation method based on key frame identification. The method comprises the following steps: acquiring a video frame sequence; obtaining a key video clip through a sliding window strategy and the contribution degree of the video clip; selecting a key frame from the key video clip based on an optical flow method; forming a key frame set by all key frames in the key video clip; generating a corresponding confrontation sample for each key frame in the key frame set; and replacing the corresponding key frame in the video frame sequence X with the confrontation sample to obtain a confrontation video sequence of the video frame sequence X. By improving a key frame extraction method and an adversarial disturbance generation technology, the defects that in the prior art, key frame positioning is inaccurate, time sequence information is not fully considered during key frame extraction, and the robustness of a disturbance generation method is poor are effectively overcome, the accuracy and robustness of video adversarial attacks can be remarkably improved, and the robustness of video adversarial attacks is improved. And the requirements in practical application can be better met.
Owner:SHANGHAI CHENGDIAN FUZHI TECH CO LTD
Ammonia decomposition hydrogen production system adopting fused salt heat supply
InactiveCN119186407Areduce adverse effectsincrease profitHydrogen productionChemical/physical processesMolten saltProcess engineering
The ammonia decomposition hydrogen production system comprises a first molten salt tank, a second molten salt tank, a molten salt electric heater, a reactor, a heat exchanger and a liquid ammonia tank, the first molten salt tank is filled with a molten salt medium, and the first molten salt tank communicates with the molten salt electric heater; the fused salt electric heater is also communicated with the second fused salt tank; the reactor comprises a heating inlet, a heating outlet, an ammonia gas inlet, an ammonia gas outlet, a heating top plate, a heating bottom plate and a plurality of wall pipes which are sleeved from inside to outside, a shell of the heat exchanger is provided with a hot fluid inlet, a hot fluid outlet, a cold fluid inlet and a cold fluid outlet, and a plurality of heat exchange plates of rectangular structures are arranged in the shell in a stacked mode; the cold fluid inlet is communicated with the liquid ammonia tank, the cold fluid outlet is communicated with the ammonia gas inlet, the hot fluid inlet is communicated with the heating outlet, and the hot fluid outlet is communicated with the first molten salt tank. The ammonia decomposition hydrogen production system adopting fused salt heat supply is high in energy utilization rate, can realize low-temperature, energy-saving and efficient hydrogen production, and can continuously and effectively operate.
Owner:FZU ZIJIN HYDROGEN POWER TECH CO LTD +1
PLC-based flue gas treatment energy-saving system
ActiveCN222167458Ureduce power consumptionReduced stabilityProgramme control in sequence/logic controllersNegative feedbackFrequency changer
The utility model provides a flue gas treatment energy-saving system based on a PLC (Programmable Logic Controller), which solves the problems of high energy consumption and resource waste when the existing flue gas treatment energy-saving system is shared by a plurality of vulcanizing machines. Comprising a main induced draft fan and a flue gas pipeline used for conveying flue gas, the main induced draft fan is connected with the flue gas pipeline, and the main induced draft fan comprises a main induced draft fan frequency converter; the system further comprises a vulcanizing machine electric control cabinet and a PLC, the vulcanizing machine electric control cabinet is electrically connected with the input end of the PLC, and the output end of the PLC is electrically connected with the main induced draft fan frequency converter. The input end of the PLC is further electrically connected with a negative feedback adjusting module used for comparing data of the PLC. The device is widely applied to the technical field of flue gas treatment in the tire industry.
Owner:PRINX CHENGSHAN (SHANDONG) TIRE COMPANY LTD
Low-density AlNbTaTiZr refractory high-entropy alloy and preparation method thereof
The invention relates to a low-density AlNbTaTiZr refractory high-entropy alloy and a preparation method thereof, belongs to the technical field of metal materials, and solves the problem that a refractory high-entropy alloy material obtained by adopting a vacuum arc melting technology in the prior art is difficult to ensure relatively high strength, good plasticity and relatively low density at the same time. The preparation method of the low-density AlNbTaTiZr refractory high-entropy alloy comprises the following steps that S1, raw materials are prepared, and mixed powder is prepared according to the designed molar ratio; s2, alloy ingots are prepared, and the mixed powder is subjected to vacuum melting to obtain the alloy ingots; s3, the alloy ingot is subjected to vacuum melting, and an alloy cast ingot is obtained; and S4, the alloy cast ingot is subjected to heat treatment, and an initial-state sample is obtained. According to the low-density AlNbTaTiZr refractory high-entropy alloy and the preparation method thereof provided by the invention, the obtained alloy material is relatively low in density, relatively high in yield strength, excellent in plasticity and relatively wide in application range.
Owner:BEIJING INST OF TECH
High-precision composite machine tool for special-shaped surface machining
InactiveCN119457930Aincrease flexibilityImprove practicalityCleaning using gasesPositioning apparatusHydraulic cylinderGear wheel
The invention discloses a high-precision compound machine tool for special-shaped surface machining, and belongs to the technical field of compound machine tools, the high-precision compound machine tool comprises a machine tool body, a spindle box and a machining seat are fixedly connected to the interior of the machine tool body, and a mounting seat is fixedly connected to the side, away from the machine tool body, of the spindle box. According to the device, a driving motor drives a rotating shaft, a first gear, a fluted disc, a plurality of second gears, a connecting shaft and a lead screw to rotate, a threaded sleeve drives a vertical plate, a connecting base, a connecting plate, a hydraulic cylinder and clamping bases to move, a to-be-machined workpiece is synchronously mounted and fixed through the multiple clamping bases, and the rapid mounting effect of a machine tool in the using process is effectively improved; when the to-be-machined workpiece is a special-shaped workpiece, the hydraulic cylinder drives the clamping bases to move, the center positions, relative to the fixing disc, of the multiple clamping bases are adjusted, and then the multiple clamping bases make contact with the surface of the to-be-machined workpiece of the special-shaped workpiece for installation in cooperation with the action of the driving motor. And therefore, the flexibility and the practicability of the machine tool in the using process are effectively improved.
Owner:LIUZHOU BOSHENG MECHANICAL & ELECTRICAL EQUIPMENT CO LTD
Color mark pen color sample line drawing clamp
The utility model discloses a color mark pen color sample line drawing clamp which comprises a machine frame, a line drawing platform is arranged above the machine frame, a paper pressing assembly is arranged on the line drawing platform, and a color pen positioning and clamping assembly used for clamping a color pen is arranged at the position, above paper, of the line drawing platform. A color pen moving driving mechanism used for driving the color pen to move from one end of the paper to the other end of the paper is arranged below the line drawing platform, and the end, away from the color pen, of the color pen positioning and clamping assembly is rotationally connected with the color pen moving driving mechanism. The counter weight assembly is arranged on the color pen positioning and clamping assembly and used for increasing or reducing the weight to control the pressure borne by the pen point of the color pen. The gradient, the stability, the moving speed and the pressure borne by the pen point of the color pen can be controlled to be unchanged when the color pen draws lines each time, so that the colors of the drawn lines of the same color pen can be repeated, the color difference of the colors of the drawn lines of the same color pen is avoided, the color quantification of the color pen can be realized through a tester, and the operation is simple, convenient and fast.
Owner:ZHAOQING SITA STATIONARY COMMODITY CO LTD
Vehicle-mounted semantic standardization method, device, equipment, medium and product
PendingCN119536732AImprove training efficiencyimprove accuracySemantic analysisCode compilationLinguistic modelIn vehicle
The invention relates to the technical field of vehicle control, and discloses a vehicle-mounted semantic standardization method, device and equipment, a medium and a product, and the method comprises the steps: obtaining a pre-trained large language model; obtaining a target original vehicle control command; obtaining a format template used for representing the target standard vehicle control command; forming a cue word according to the target original vehicle control command and the format template; and inputting the target original vehicle control command and the cue word into the large language model, and outputting the converted target standard vehicle control command through the large language model. Based on the ability of the large language model to directly understand the text meaning, the original vehicle control command and the standard vehicle control command are directly paired to generate the training sample of the text style, so that the training sample is input into the large language model for training, the threshold of model training is reduced, and the training efficiency and the training accuracy are improved; and high accuracy and high automation degree of vehicle-mounted semantic standardization are considered.
Owner:BEIJING PHOENIX AUTO INTELLIGENCE CO LTD
Preparation method and application of carbon-coated fluorine-doped sodium ferric sulfate positive electrode material
PendingCN119430295AUniform particlesEase of mass productionPositive electrodesIron compoundsIron sulfateElectronegativity
The invention relates to the technical field of positive electrode materials, and discloses a preparation method of a carbon-coated fluorine-doped sodium ferric sulfate positive electrode material, which comprises the following steps: step 1, adding an iron source, a sodium source, a sulfur source, a carbon source and a fluorine source into deionized water, and heating and stirring to completely dissolve the raw materials to obtain a solution A; 2, converting the solution A into precursor powder B by using a spray drying method; and 3, calcining the precursor powder B in an inert atmosphere, and crushing and grinding the obtained product to obtain the carbon-coated fluorine-doped Na2Fe2 (SO4) 3 positive electrode material. The F element with higher electronegativity than the S element is introduced, so that the overall electron distribution of the material is changed, the structural stability is improved, and the high-conductivity carbon protection layer is coated on the surface of the active material to form a conductive network, so that the resistance is reduced, the volume expansion is relieved, and the battery capacity and the cycling stability can be obviously improved.
Owner:ZHEJIANG SCI-TECH UNIV
Anti-locking fixing device for secondary cable construction
PendingCN119315453AExtended service lifeGuarantee stabilityApparatus for laying cablesClassical mechanicsStructural engineering
Owner:SUQIAN POWER SUPPLY COMPANY OF JIANGSU PROVINCE POWER +2
Negative electrode electrolyte of near-neutral total iron flow battery and preparation method of negative electrode electrolyte
PendingCN119481191AImprove cycle stabilityHigh electronegativityRegenerative fuel cellsElectrolytesSupporting electrolyteFerric hydroxide
The invention belongs to the technical field of flow battery energy storage, and more specifically relates to a near-neutral total iron flow battery negative electrode electrolyte and a preparation method thereof, the negative electrode electrolyte is prepared from an iron salt, a chelating agent, a stabilizing agent, a supporting electrolyte and water at a certain temperature, the total iron concentration is 0.1-1.0 M, the molar ratio of the chelating agent to the iron salt is 1.2-2.0, the molar ratio of the stabilizing agent to the supporting electrolyte is 1.2-2.0, and the total iron concentration is 0.1-1.0 M. The molar ratio of the stabilizer to Fe is 0.25-1.0, the supporting electrolyte concentration is 0-2.0 mol / L, and the pH value is 7.0-8.5. The near-neutral negative electrode electrolyte for the total-iron flow battery is high in stability, can effectively inhibit generation of ferric hydroxide precipitates under a neutral condition, improves the stability of iron ions, greatly prolongs the cycle life of the total-iron flow battery, and can be widely applied to various aqueous flow batteries.
Owner:WUHAN GLT ENERGY & ENVIRONMENTAL TECH CO LTD
Early warning method for time-varying operation of automobile crane
PendingCN119117966AReflects movement stabilityReflects anti-overturning stabilityCranesSimulationControl theory
The invention discloses an early warning method for time-varying operation of an automobile crane. According to the scheme, the early warning method comprises the following steps: acquiring coordinates (xcop, ycop) of a pressure center CoP of a to-be-analyzed automobile crane in a working state under a reference coordinate system; monitoring in real time to obtain a zero moment point (xzmp, yzmp) of the automobile crane to be analyzed; calculating a real-time first ratio Kx and a real-time second ratio Ky of the to-be-analyzed truck crane in a working state according to the following formula: # imgabs0 #, obtaining a maximum value K = max (Kx, Ky) in the first ratio Kx and the second ratio Ky, when the maximum value K is less than or equal to a numerical value 1, not performing early warning on the to-be-analyzed truck crane, and when the maximum value K is less than or equal to a numerical value 2, not performing early warning on the to-be-analyzed truck crane. When the maximum value K is larger than the numerical value 1 and smaller than or equal to a preset threshold value, an early warning requiring low-speed operation is sent out to the to-be-analyzed automobile crane, and when the maximum value K is larger than the preset threshold value, an operation stopping warning is sent out to the to-be-analyzed automobile crane.
Owner:CHINA RAILWAY CONSTR GROUP CO LTD +2
Superconducting coaxial cable for quantum computer and manufacturing method thereof
ActiveCN119560230AImprove stabilityReduced stabilitySuperconductors/hyperconductorsSuperconductor devicesCoaxial cableElectrical conductor
The invention relates to the technical field of cable manufacturing, in particular to a superconducting coaxial cable for a quantum computer and a manufacturing method thereof, and the method comprises the steps: coating an inner conductor with an inner insulating layer to form an inner conductor layer, and electroplating a niobium compound coating on the inner wall of a stainless steel tube to form an outer conductor; forming a cable conductive layer; acquiring an advancing speed change curve of a single inner conductor layer; determining a first velocity mutation type and a second velocity mutation type; determining the vertical stirring speed of the electroplating stirring rod at the position of the outer conductor; electroplating the inner wall of the stainless steel pipe; according to the friction degree of the inner conductor layer and the outer conductor, determining an inner conductor motion adjusting mode, including adjusting the moving speed of the inner conductor layer in the outer conductor, or determining the initial rotating speed of the inner conductor layer when the outer conductor starts to pull a wire; and performing wire drawing on the sleeved outer conductor to form the cable. According to the invention, the stability of cable assembly is improved.
Owner:嘉兴翼波电子有限公司
Antenna signal detection network, antenna signal detection method, antenna system and base station
PendingCN119675792Aquick fixEasy to determineTransmitters monitoringReceivers monitoringTime domainAntenna array
The invention provides an antenna signal detection network, a detection method, an antenna system and a base station. The detection network comprises two correction channels and a switching network. Wherein the first correction channel comprises a plurality of first output ports, and the phases of the plurality of first output ports are the same; the second correction channel comprises a plurality of second output ports, the number of the second output ports is the same as that of the first output ports, the phases of the plurality of second output ports are different, and the plurality of first output ports and the second output ports are connected with the antenna array; the switching network is respectively connected with the two correction channels and is used for realizing the connection of the two correction channels with the calibration port in different time domains, and the calibration port is connected with the RRU and is used for inputting a transmission signal between the antenna array and the RRU. According to the antenna signal detection network, the antenna signal detection method, the antenna system and the base station provided by the invention, whether the connection between the antenna array and the RRU is correct or not can be quickly and conveniently detected.
Owner:HUAWEI TECH CO LTD
Multi-channel seed counting monitoring system based on data fusion
PendingCN119294431AReduce monitoring biasImprove Counting AccuracyCounting mechanisms/objectsComplex mathematical operationsState predictionAgricultural engineering
The invention discloses a multi-channel seed counting monitoring system based on data fusion, which is applied to the technical field of automatic seed counting of seed metering devices, and comprises a seed flow dispersion structure, a photoelectric sensor and a signal processing module, the signal processing module is used for processing output signals acquired by the photoelectric sensor from each seed monitoring channel, the method specifically comprises the following steps: determining a seed passing event based on digital signal level change of each seed monitoring channel, and updating a counter in combination with an event triggering interval threshold value to obtain a total seed count; in each time step length, performing state prediction by using an unscented Kalman filtering algorithm, generating Sigma points, propagating the Sigma points by using a system model, calculating a mean value and a covariance of a prediction state, and updating state estimation by combining the propagated Sigma points converted by an observation model; and adjusting the count of the seed monitoring channel and the total seed count based on the updated state estimation, and updating the counter. The seed counting accuracy is improved.
Owner:XINJIANG AGRI UNIV
Heat treatment process for relieving large-size carbide of 17CrNiMo6 large-modulus gear
PendingCN119433416Areduce carbon contentsmall grain sizeFurnace typesSolid state diffusion coatingCarbon potentialGear wheel
The invention discloses a heat treatment process for relieving large-size carbides of a 17CrNiMo6 large-modulus gear. The heat treatment process comprises the following steps: a) first-time heating: heating a workpiece to a carburizing temperature in a gradient heating manner; b) heat-preservation carburizing: carburizing the workpiece by adopting multi-section pulse carbon potential; c) cooling after carburization: carrying out furnace gradient cooling on the workpiece to 660 + / -5 DEG C; d) heat preservation transformation: the workpiece is subjected to heat preservation at 660 + / -5 DEG C for a period of time, so that dispersed cementite precipitation and pearlite transformation are fully carried out; e) heating and preserving heat for the second time: heating the workpiece to 820 + / -5 DEG C, and preserving heat for austenite transformation; and f) quenching. Therefore, large-size carbides in a gear structure after heat treatment can be reduced, martensite needles in a quenched workpiece are effectively promoted to be smaller and thinner, the content of retained austenite is low, the metallographic structure of the workpiece is guaranteed, the use performance of parts is met, and the heat treatment method is particularly suitable for heat treatment of large-modulus gears.
Owner:SHANXI TZCO INTELLIGENT MINING EQUIPMENT TECHNOLOGY CO LTD
Monocrystalline silicon aspherical lens and numerical control polishing process thereof
ActiveCN119407617AImprove processing efficiencylow costOptical surface grinding machinesNumerical controlSurface finish
The invention relates to the technical field of optical processing, and provides a monocrystalline silicon aspherical lens and a numerical control polishing process thereof, a numerical control polishing machine is used for carrying out the main steps of rough polishing, fine polishing, fine trimming and the like, process parameters are adjusted according to the characteristics of monocrystalline silicon, and therefore the monocrystalline silicon aspherical lens with the diameter smaller than 320 mm can be polished. By means of a numerical control polishing machine tool, the optimized front surface type PV can reach 0.3 mu m or below, the surface smoothness can reach 40 / 20, and the method has reference significance for monocrystalline silicon aspherical lenses with the diameter of 320 mm or above.
Owner:安徽光智科技有限公司
Preparation method and application of submicron spherical gold-platinum-palladium alloy powder for matching low-temperature co-fired ceramic
PendingCN119387602AImprove surface activityevenly dispersedTransportation and packagingMetal-working apparatusSolderabilityCeramic substrate
The invention belongs to the technical field of precious metal electronic paste, and particularly relates to a preparation method and application of submicron spherical gold-platinum-palladium alloy powder used for being matched with low-temperature co-fired ceramics. The preparation method comprises the following steps: mixing a tetrachloroauric acid solution, a hexachloroplatinic acid solution and a tetrachloropalladium (II) acid solution to obtain a gold-platinum-palladium mixed solution; the gold-platinum-palladium mixed solution, the dispersing agent solution and the modified reducing agent solution are mixed for a second time, after a reduction reaction is conducted, static settlement and solid-liquid separation are conducted in sequence, obtained solids are washed and dried in sequence, and the obtained submicron spherical gold-platinum-palladium alloy powder used for being matched with the low-temperature co-fired ceramic has the advantages of being uniform in particle size, free of agglomeration, high in dispersity and the like. After low-temperature co-firing with a ceramic substrate, the substrate has the characteristics of flatness, no bubble, excellent weldability and soldering resistance, good batch stability and the like.
Owner:贵研电子材料(云南)有限公司
Shockproof high-precision spindle box structure
InactiveCN119634764AHigh precisionImprove buffering effectLarge fixed membersMaintainance and safety accessoriesStructural engineeringMechanical engineering
The invention relates to the field of spindle boxes, and discloses a shockproof high-precision spindle box structure which comprises a spindle box body. A buffering assembly is arranged at the bottom end of the main spindle box body, first buffering springs are evenly installed at the bottom end of the main spindle box body, spring seats are installed at the bottom ends of the first buffering springs, auxiliary assemblies are arranged at the top ends of the spring seats, and connecting round rods are fixedly installed between the spring seats. Sliding seats are slidably mounted on one sides of the spring seats, the sliding seats are connected through second buffer springs, and connecting rods are rotatably mounted at the top ends of the sliding seats; by arranging the auxiliary assembly, the damping protection effect of the device on the main spindle box body is enhanced, the springback speed of a first buffer spring is reduced, resetting of the main spindle box body is smoother and more stable, then the working precision of the main spindle box body is improved, and the quality of machined products is improved.
Owner:沈阳中宏科技有限公司
Backlight module processing film flatness monitoring system based on machine vision
InactiveCN119618115AImprove execution efficiencylow efficiencyUsing optical meansMachine visionAdhesive glue
The invention discloses a backlight module processing coating flatness monitoring system based on machine vision, relates to the technical field of processing coating monitoring, and solves the technical problems that in the prior art, the influence of a coating material cannot be analyzed, and the execution efficiency of processing coating is reduced. The method specifically comprises the steps that a film covering influence analysis unit analyzes the processing film covering influence of the backlight module, film covering material thickness data and film covering glue matching data are collected, and whether the film covering material and a glue matching material are influenced or not is deduced through data comparison; the processing and laminating influence of the backlight module is analyzed, whether flatness floating is influenced by a laminating material or not in the processing and laminating process is deduced by analyzing the influence of the laminating material, so that the laminating material is repaired and replaced in time, and the situation that the use efficiency of the laminating material is reduced due to the fact that the influence of flatness floating cannot be solved due to reworking is avoided. And the film coating processing progress of the backlight module is influenced.
Owner:HUNAN JIFA TIMES TECH CO LTD
Anti-scattering water-guided laser cutting fluid as well as preparation method and application thereof
PendingCN119432491AReduce Interface Scatteringreduce in quantityLaser beam welding apparatusLubricant compositionRefractive indexLaser cutting
The invention provides anti-scattering water-guided laser cutting fluid as well as a preparation method and application thereof. The anti-scattering water-guided laser cutting fluid comprises the following components in parts by weight: 0.1-1 part of an anti-scattering agent; 0.01 to 0.1 part of a foam discharging agent; 1-5 parts of a refractive index regulator; and 80-99 parts of ultrapure water. The anti-scattering agent is a polymer; the foam removing agent is one or more of hydroxymethyl cellulose, hydroxy propyl cellulose, sodium lignin sulfonate, potassium lignin sulfonate and naphthalene sulfonic acid formaldehyde condensate sodium salt; the refractive index regulator is an iodine-containing compound and / or a fluorine-containing compound. According to the anti-scattering water-guided laser cutting fluid, light beam scattering and energy loss in the water-guided laser cutting process can be remarkably reduced, and the cutting precision and efficiency are improved. The anti-scattering water-guided laser cutting fluid has very good application prospects and large-scale industrial popularization potential in the field of water-guided laser cutting.
Owner:DALIAN AOSHOU TECH CO LTD
Additive repair method for damage defect of stepped hole in part
PendingCN119115429AGuaranteed Strengthfirmly connectedIncreasing energy efficiencySlag (welding)Structural engineering
The invention provides an additive repairing method for a stepped hole damage defect on a part, which comprises the following steps of: firstly, removing the stepped hole defect, and preparing a matched filling material according to the size of the removed stepped hole; filling a filling material into the stepped hole, welding and positioning the filling material and the top surface of the base material by adopting laser welding, and ensuring that the filling material does not slide relative to the base material or fly out of the base material during friction stir welding of the static shaft shoulder; then, a static shoulder friction stir welding method is adopted, the filler is extruded, the filler and the base metal are reliably combined, control over welding heat input is achieved, the influence of welding heat on the base metal is reduced, and the problems of air holes, slag inclusion, coarse grains, hot cracks and the like which are prone to occurring in conventional fusion welding repair are solved. And the welding quality is high, and the maintenance cost of parts is saved.
Owner:STATE OWNED SIDA MASCH MFG CO LTD