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Precipitation monitoring method and system based on multi-mode noise reduction of unmanned aerial vehicle
PendingCN121861948Aimprove performanceHigh precisionRainfall/precipitation gaugesSubsonic/sonic/ultrasonic wave measurementNoise reductionVisual perception
The invention provides a rainfall monitoring method and system based on unmanned aerial vehicle multi-mode noise reduction in the technical field of environment monitoring and unmanned aerial vehicle application, and the method comprises the steps: S1, collecting a visible light image and a long-wave infrared image through a multispectral vision module after an unmanned aerial vehicle takes off, and collecting a rainfall audio from an acoustic cabin through a microphone; s2, carrying out noise reduction processing on the visible light image, the long-wave infrared image and the rainfall audio; s3, extracting a raindrop size distribution histogram and a spatial density thermodynamic diagram based on the visible light image and the long-wave infrared image, and extracting acoustic MFCC features based on rainfall audio; s4, performing feature fusion operation based on the raindrop size distribution histogram, the visual density thermodynamic diagram and the acoustic MFCC features to obtain rainfall intensity; and S5, carrying out cumulant dynamic compensation based on the rainfall intensity to obtain the cumulative rainfall. The rainfall monitoring method has the advantages that the precision, robustness and practical level of rainfall monitoring are greatly improved.
Owner:FUJIAN WANFU INFORMATION TECH CO LTD
Wide bandgap power semiconductor device and preparation method thereof
PendingCN121865667Aensure performanceEnsure long-term reliabilityPower semiconductor deviceDevice material
The invention relates to the technical field of semiconductor devices, and discloses a wide bandgap power semiconductor device and a preparation method thereof. The method comprises: providing a substrate layer of a first conductivity type; forming a first doped region which is deep into the substrate layer and comprises a plurality of doped layers which are sequentially nested from outside to inside, wherein the doping concentrations of the plurality of doped layers are sequentially increased from outside to inside; forming a second doped region in the doped layer on the innermost side of the first doped region; forming an isolation layer on the first surface; forming a control electrode on the isolation layer; forming a first electrode on the first surface; a second electrode is formed on the second surface of the substrate layer. According to the invention, the first doped region which is located between the substrate layer and the second doped region and has the doping concentration gradually increased from outside to inside is formed through a mode of multiple times of ion implantation, so that transverse electric field constraint is constructed, transverse depletion of a channel region and a short channel effect under the condition of large voltage are inhibited, the channel width is reduced, and the performance of the device is improved. And the device performance and reliability are improved.
Owner:SUZHOU WEIQING SEMICONDUCTOR CO LTD
A riveting device for pressure sensor
The utility model provides a pressure sensor riveting device for pressure sensor's shell and base connection fixed, the one end of shell is connected with base, including the top post, drives linear movement through drive assembly, the lateral wall of base and shell junction is provided with the clamping hole, the top post is coaxial with clamping hole, the top post applies pressure to the outside surface of shell, makes shell form the convex block that protrudes inwards, the convex block is clamped with clamping hole. Adopt mechanical riveting to replace high accuracy laser welding, need not to depend on high power laser equipment and precision alignment system, significantly reduce equipment investment and process complexity, solved the problem that traditional full welding led, more fit the working condition characteristics of supermicro sensor low intensity demand.
Owner:敏之捷传感科技(常州)有限公司
A warning light for car door handles
This utility model provides a warning light for a car door handle, belonging to the field of automotive warning light technology. It includes a door handle assembly and a warning mechanism. The door handle assembly is installed on the car door and is used to open and close the door. The warning mechanism is activated when the car door is opened from the inside, and an icon falls to the ground to warn pedestrians, reducing traffic accidents caused by sudden door opening. This utility model expands the application scenarios of ambient lighting, enabling it to provide a light warning when the car door is opened, thereby reducing traffic accidents caused by sudden door opening.
Owner:WUHAN AURATECH AUTOMOBILE TECH CO LTD
Quick-release wire feeding structure suitable for small-diameter metal wires
PendingCN121870214Aeasy to cleaneasy to replaceWelding/cutting auxillary devicesArc welding apparatusAgricultural engineeringStructural engineering
The invention belongs to the technical field of metal wire feeding and printing, and relates to a quick-release wire feeding structure suitable for small-diameter metal wires. The wire feeding structure comprises a main body structure frame assembly serving as an installation reference and a force bearing main body of the whole mechanism; the quick-release wire feeding seat assembly is arranged in the main body structure frame assembly, and a through wire feeding channel is formed in the quick-release wire feeding seat assembly; the wire feeding shaft driving assembly is installed in the shaft hole of the main body structure frame assembly and used for driving the metal wire to move along the wire feeding channel; the wire feeding head assembly is installed at the outlet end of the main body structure frame assembly and used for guiding the metal wires; and the quick-release wire feeding seat assembly can be integrally taken out of and loaded into the main body structure frame assembly. The problems that operation and maintenance convenience is poor, and wire feeding stability and reliability are insufficient are solved.
Owner:XI AN JIAOTONG UNIV
A high-precision weighing evaporation instrument based on lever balance embedded installation
The utility model discloses a kind of high-precision weighing evapotranspiration instruments of embedded installation based on lever balance, belong to evapotranspiration instrument technical field. Including fixed support, tray assembly is movably connected on fixed support, and evapotranspiration instrument experimental soil box is set on tray assembly, and weighing assembly is set below tray assembly;Force transmission pull rod is arranged between tray assembly and weighing assembly;Weighing assembly includes force measuring device, and force measuring device side rotatably connects with lever two, and lever two middle part is rotatably installed at the bottom of fixed support by support;Force transmission pull rod upper end is respectively connected with two lever one hinged connection, and force transmission pull rod lower end is movably connected with lever two. The utility model is through the cooperation of lever two and counterweight, substantially offset the initial weight of evapotranspiration instrument experimental soil box, so that force measuring device only needs to monitor the tiny weight change caused by soil evaporation, crop transpiration and rainfall / irrigation, avoid large load to influence sensor sensitivity, realize high-precision data acquisition.
Owner:XIAN BISHUI ENVIRONMENTAL NEW TECH CO LTD
Ultraradio frequency anti-aging transdermal collagen light beauty instrument
ActiveCN224070972UGuarantee stabilityEnsure long-term reliabilityElectrotherapyLight therapyMedicineSkin contact
The utility model provides an ultra-radio frequency anti-aging transdermal collagen light beauty instrument. The ultra-radio-frequency anti-aging transdermal collagen light beauty instrument comprises a shell, and a skin contact area is formed at one end of the shell; the optical assembly comprises a halogen lamp tube, a light filtering part and a light transmitting part which are sequentially arranged at intervals, the halogen lamp tube and the light filtering part are arranged in the shell, at least part of the light transmitting part is exposed out of the skin contact area, and the light filtering part allows near-infrared light emitted by the halogen lamp tube to pass through and prevents non-near-infrared light emitted by the halogen lamp tube from passing through; the light transmitting piece is used for enabling near-infrared light formed after filtering of the light filtering piece to irradiate out of the shell, the halogen lamp tube and the light filtering piece are arranged in parallel, and the distance between the halogen lamp tube and the light filtering piece is not smaller than 2 mm; the controller is arranged in the shell, and the halogen lamp tube is electrically connected with the controller so as to control the halogen lamp tube to work. According to the technical scheme, the problems that in the prior art, a beautifying instrument is low in use safety and poor in beautifying effect are solved.
Owner:ULIKE (SHENZHEN) SMART ELECTRONICS CO LTD
Connecting structure of PCCP (prestressed concrete cylinder pipe)
ActiveCN224229505Ufirmly connectedensure tightnessPipe-jointsCouplingsArchitectural engineeringStructural engineering
The utility model discloses a PCCP (prestressed concrete cylinder pipe) connecting structure which comprises pipe bodies, the two ends of each pipe body are respectively provided with an inserting part and a socket part, the inserting parts and the socket parts on the two pipe bodies which correspond to each other end to end are inserted and correspond to each other, sealing rings are arranged on the outer sides of the inserting parts, and sealing rings are arranged on the outer sides of the socket parts. Fixing parts and pressing parts corresponding to the fixing parts are arranged at the two ends of each pipe body respectively, the number of the pressing parts is multiple, and the pressing parts are detachably connected with the fixing parts on the adjacent pipe bodies. The pipeline connecting structure has the beneficial effects that the fixing pieces and the pressing pieces at the two ends of the pipe body are combined, the multiple pressing pieces enable two sections of pipelines to be stably connected in a detachable connection mode, pressure can be gradually applied in the later use process, and the tightness and long-term sealing of pipeline connection are guaranteed.
Owner:GUANGXI QIXING PIPE CO LTD
A SiC MOSFET device with improved diode reverse recovery characteristics and a method of manufacturing the same
PendingCN122602542AImprove electric field distributionImprove switching characteristics
The application discloses a SiC MOSFET device with improved diode reverse recovery characteristics and a preparation method thereof, and relates to the technical field of semiconductors.The device comprises, from bottom to top, a drain metal layer, an N-type substrate, a first N-type drift layer, a second N-type drift layer, a P-body region, a P+ contact region, an ohmic contact alloy layer and a source metal layer; a P++ layer extending downward is arranged in the middle of the top surface of the second N-type drift layer; a groove region extending into the P++ layer (4) is arranged on the top surface of the P+ contact region; a gate oxide layer is arranged in the groove region; a filled polysilicon gate is arranged in the gate oxide layer; N+ regions extending downward from the top surface of the P+ contact region into the P-body region are arranged on both sides of the groove region; an isolation medium layer is deposited on the P+ contact region, and the isolation medium layer completely covers the top end surfaces of the polysilicon gate and the gate oxide layer.The application can reduce the deep diffusion of carriers, make the recombination of the carriers better distributed in the surface region of the PN junction, and guarantee the long-term reliability of the device.
Owner:YANGZHOU YANGJIE ELECTRONIC TECH CO LTD +1
Tbc battery and method of making
PendingCN122269877AReduce the density of defect statesInhibition of abnormal spreadElectrical batterySilicon oxide
The application discloses a TBC battery and a preparation method thereof. The TBC battery comprises a substrate and a P-zone assembly arranged on the back of the substrate. The P-zone assembly comprises a first electrode, a first tunneling silicon oxide layer, a boron-doped polysilicon layer and a first passivation layer which are sequentially stacked on the back of the substrate. The first electrode penetrates through the first passivation layer and the boron-doped polysilicon layer. The P-zone assembly further comprises a tunneling silicon nitride layer arranged between the first tunneling silicon oxide layer and the boron-doped polysilicon layer. The tunneling silicon nitride layer is used to block the boron element in the boron-doped polysilicon layer from being precipitated to the first tunneling silicon oxide layer. The application inhibits the precipitation of the boron element in the boron-doped polysilicon layer through the silicon nitride layer, enhances the passivation effect, and further improves the final conversion efficiency and reliability of the battery.
Owner:S C NEW ENERGY TECH CORP
A non-magnetic power filter for nuclear magnetic resonance gradient power supplies
This utility model discloses a non-magnetic power supply filter for nuclear magnetic resonance gradient power supplies, belonging to the field of electromagnetic compatibility filter technology. It consists of ten identical filter branches arranged in parallel, each branch forming a first-level filter channel. The structure of each channel is as follows: the signal enters from the input pin Ln, first passing through the left-side through-hole capacitor C1, the other end of which serves as the output. The output of the left-side through-hole capacitor C1 is connected in series with an inductor L. The other end of the inductor L is connected to one end of the middle through-hole capacitor C1, and the output of the middle through-hole capacitor C1 is connected in series with another inductor L. The other end of the other inductor L is connected to one end of the right-side through-hole capacitor C1, and the output of the right-side through-hole capacitor C1 is connected to the output pin Ln'. This utility model solves the problems of large space occupation, complex installation and wiring, excessive wiring that easily introduces additional interference, and inconsistent performance of each filter.
Owner:江苏沃姆克电子科技有限公司
Automatic elevator guide rail clamping and positioning device and method based on laser lofting
PendingCN121974228AHigh positioning accuracyImprove construction efficiencyElevatorsMine liftsInformation controlClassical mechanics
The invention provides an elevator guide rail automatic clamping and positioning device and method based on laser lofting, and relates to the technical field of special equipment. The automatic clamping and positioning device for the elevator guide rail comprises a rail clamping and positioning mechanism. The laser receiving target plate and the camera device are connected with the rail clamping and positioning mechanism, and the laser receiving target plate comprises a reference target point located in the center of the laser receiving target plate and is used for receiving rail laser sample line light beams from the top of an elevator shaft to form sample points; the camera device is used for forming positioning information from image information containing the sampling point and the reference target point in real time; and the controller is respectively in communication connection with the camera device and the track clamping and positioning mechanism, and is used for controlling the track clamping and positioning mechanism to move according to the positioning information, so that the sampling point coincides with the reference target point.
Owner:DALIAN DESIGN INST CO LTD CHINA FIRST HEAVY IND +2
A heat treatment and setting device for polyester fiber yarn
ActiveCN224280578Ustress thoroughlyThorough stress reliefFilament manufactureArtificial filament heat treatmentYarnPolyester
This utility model discloses a heat treatment and shaping device for polyester fiber yarn, including a drying box. A fixed frame is fixedly installed inside the drying box, and a placement plate is provided above the fixed frame. The placement plate is slidably connected to the fixed frame via a slider. A first sliding rod is fixedly installed inside the fixed frame, and the slider is slidably sleeved with the first sliding rod. A first cam is rotatably installed on the fixed frame. An installation frame is fixedly installed inside the drying box, and a movable frame is slidably installed on the installation frame. A carding frame is rotatably installed on the movable frame. Through the synergistic action of the placement plate, slider, first sliding rod, first cam, and first spring, the placement plate and the fiber yarn it carries are driven to generate controllable reciprocating vibration or oscillation inside the drying box. This dynamic treatment method effectively breaks the static structure of multi-layer stacked fiber yarn and significantly promotes the penetration and circulation of the heat medium inside the fiber layer and between different layers.
Owner:SUZHOU JINHUI PLASTIC CO LTD
A terminal facilitating wiring
ActiveCN224595929Uavoid integrity violationsImprove wiring efficiency
The utility model relates to a wiring terminal convenient for wiring, which comprises integrally-formed first and second clamping and pressing ends and a middle connecting section, the first and second clamping and pressing ends are arranged perpendicularly and are both connected to the connecting section, the cross sections of the first and second clamping and pressing ends are both U-shaped, the first and second clamping and pressing ends are arranged in opposite directions, the first clamping and pressing end has a wire slot with an opening facing the front side, and the second clamping and pressing end has a wire slot with an opening facing the rear side, the utility model can achieve cross-over connection of two wires without cutting, one wire passes through the front wire slot of the first clamping and pressing end in the first direction, the other wire passes through the rear wire slot of the second clamping and pressing end in the vertical direction, and then the two clamping and pressing ends are pressed on the corresponding wires, thus completing electrical connection without cutting the wires, and meeting the requirement of flexible wiring in space.
Owner:GULIFA GRP CO LTD +1
Upright shock absorber with adjustable damping at bottom end
The upright bottom end damping adjustment adjustable shock absorber is provided with a shock absorber body and a handle, a movable shock absorption space is formed in the shock absorber body, a piston rod is arranged in the movable shock absorption space, a piston assembly is installed on one side of the piston rod, and an ejector rod used for ejecting the piston rod to work is arranged on one side of the piston rod. An assembling end is arranged on one side of the ejector rod, and two holes for throttling are formed in the shock absorber, so that the adjustable space of double-hole throttling is larger, the adaptability is better, the ejector rod and the floating valve are ingenious in design, oil way circulation is reasonably avoided, the oil flow requirement under any working condition is met, and the service life of the shock absorber is prolonged. Oil in a high-pressure cavity is matched with a one-way valve and an oil return hole to form an efficient hydraulic system, the synergistic effect of a piston assembly and a damping spring is combined, the damping stability is remarkably improved, and the risk of oil leakage is greatly reduced through the double-protection design of an ejector rod sealing ring and a guide sealing component.
Owner:JIANGSU JUNYOU AUTO PARTS CO LTD
Device and method for automatically controlling quality of indirect cooling circulating water
PendingCN122086143Aaccurate doseEfficient removalControlling ratio of multiple fluid flowsChemical variable controlAutomatic controlPower station
The invention belongs to the technical field of power plant indirect cooling circulating water treatment, and relates to an automatic control device and method for the quality of indirect cooling circulating water. Comprising an intelligent control cabinet, an alkali solution tank, an acid solution tank, a mixed ion exchanger, a condenser and an indirect cooling tower aluminum heat exchanger, a conductivity meter, a pH meter and a PLC (Programmable Logic Controller) are arranged in the intelligent control cabinet; the alkali solution tank is connected with a circulating water inlet pipeline; the acid solution tank is connected with a circulating water inlet pipeline; a pH electrode is arranged on the circulating water inlet pipeline; a conductivity electrode is arranged on the circulating water outlet pipeline; the condenser inlet is connected with the circulating water outlet pipeline; the condenser outlet is connected with the circulating water inlet pipeline; the circulating water outlet pipeline is connected with an inlet of the mixed ion exchanger; an outlet of the mixed ion exchanger is connected with an inlet of the condenser. According to the invention, accurate control of the water quality pH value and conductivity of the intercooling circulating water can be realized, so that system corrosion is effectively inhibited, the service life of equipment is prolonged, and safe and economical operation of a unit is guaranteed.
Owner:XIAN THERMAL POWER RES INST CO LTD
Storage mechanism and additive manufacturing apparatus
ActiveCN224644278Ustable space attitudeEnsure printing positioning accuracy
The application relates to the technical field of additive manufacturing, in particular to a storage mechanism and an additive manufacturing device. The storage mechanism comprises a ring-shaped main body, the ring-shaped main body has coaxially arranged outer and inner circumferential surfaces and parallelly arranged top and bottom annular surfaces, the ring-shaped main body is provided with a plurality of mounting holes for storing nozzle assemblies, the mounting holes are arranged in the radial direction, are located on the outer circumferential surface and extend to the inner circumferential surface, adjacent mounting holes are arranged at intervals, and the axial end surface of the ring-shaped main body is provided with a limiting part; when the nozzle assembly is stored in the mounting hole, the limiting part limits and fixes the nozzle assembly. The storage mechanism realizes quick switching of the nozzle assembly by rotating the ring-shaped main body, adapts to the replacement requirement of the equipment, is high in efficiency, the radially arranged mounting holes improve the space utilization rate and the structure is compact, the limiting part guarantees the stability of the assembly, adjacent mounting holes are arranged at intervals in an orderly manner, interference is prevented and management is facilitated.
Owner:ATOMIC RESHAPING TECHNOLOGY (SHENZHEN) CO LTD
Embedded visual transparent protection structure resistant to multiple impacts
This invention relates to an embedded, transparent protective structure resistant to repeated impacts. It comprises a transparent ceramic curved armor plate, a transparent fiber-reinforced skeleton, a polycarbonate curved backplate, an epoxy resin coating, and an STF shear-thickening coating. The polycarbonate curved backplate has a central groove with a concave bottom. Each polygonal unit of the transparent fiber-reinforced skeleton contains a transparent ceramic curved armor plate. The gaps between the transparent ceramic curved armor plates and the transparent fiber-reinforced skeleton are filled with the STF shear-thickening coating. The bottom of the overall structure formed by the transparent ceramic curved armor plates, the transparent fiber-reinforced skeleton, and the STF shear-thickening coating is a convex curved surface, and the upper part of the overall structure is also a convex curved surface coated with an epoxy resin coating. This invention uses segmented, interlocking fibers in the armor plates to inhibit the propagation of crack damage, ensuring that the protective capabilities and visibility of other areas are not affected after an impact. Combined with the function of the curved structure, the overall structure is embedded in the curved backplate, forming an embedded structure.
Owner:NANJING UNIV OF SCI & TECH
Curtain rail seal capable of limiting and stretching out and drawing back at will
ActiveCN224155458URealize instant automatic lockingAchieve precise position limitCurtain suspension devicesMechanical engineeringTooth position
Owner:FUZHOU YANGSHI YOUPIN DECORATION MATERIALS CO LTD
An online monitoring method and system for total nitrogen and total phosphorus concentration combining spectral enhancement and closed-loop correction
PendingCN122259818AIncrease information dimensionimprove featuresEnsemble learningBiological modelsFluorescenceUltraviolet
The application discloses a total nitrogen and total phosphorus concentration online monitoring method and system combining spectrum enhancement and closed-loop correction. The method comprises the following steps: synchronously collecting water quality online monitoring data and fluorescence / ultraviolet spectrum data and performing pretreatment; extracting characteristic indexes related to total nitrogen and total phosphorus from the spectrum data; introducing random noise to the enhancement characteristic set of the predefined key area to perform data enhancement, and performing cluster compression on the data of the non-predefined area; training a machine learning prediction model by using the optimized data; regularly obtaining manual monitoring data of a national control section; and finally performing real-time concentration prediction by using the corrected model. The application relates to the technical field of water environment monitoring; the training efficiency and the performance of the key area are balanced through regional optimization processing, the long-term reliability and authority of the model are ensured through the closed-loop correction mechanism of the national control section data, and high-precision, high-robustness and self-evolution total nitrogen and total phosphorus concentration online monitoring is realized.
Owner:CHINESE RES ACAD OF ENVIRONMENTAL SCI
Contact hole and forming method thereof
The invention belongs to the technical field of semiconductor manufacturing, relates to a contact hole and a forming method thereof, and aims to solve the problems of over-etching of a gate contact hole, side wall loss of a shared contact hole and'eating through 'of the bottom of a gate in the prior art. The method comprises the following steps: firstly, forming a metal gate and a side wall on substrate silicon, and etching to regulate and control the height of the metal gate, so that the height difference between the metal gate and the side wall is equal to the thickness of a second contact etching stop layer; sequentially depositing the stop layer and a second interlayer dielectric layer, and completely retaining the stop layer after polishing; depositing a contact hole lamination layer and etching, and taking the stop layer as a stop interface; and finally, etching the stop layer to accurately form two types of contact holes. According to the process, through the closed-loop design of height difference presetting, stop layer deposition and step-by-step etching, over-etching is completely eradicated, meanwhile, the side wall loss of the shared contact hole is reduced, the bottom is prevented from being broken through, and the performance and reliability of the device are guaranteed.
Owner:NEXCHIP SEMICON CO LTD
A mounting fitting for a stainless steel corrugated hose for gas delivery
The utility model discloses a special installation pipe fitting for stainless steel corrugated hose for gas delivery, which is designed based on GB / T26002-2025 standard and used for connecting indoor gas delivery pipeline of commercial and residential users. The pipe fitting is composed of a threaded connecting piece, a long-life sealing gasket, a fastening snap ring and a compression sleeve. Except the sealing gasket, the rest components are made of metal material, which can form low-resistance electrical connection of the gas pipeline and reduce the risk of failure caused by leakage of the burner. The fastening snap ring is connected at three equal points of a circular ring. After installation and fastening, the point connection points are automatically separated, which makes the pipe fitting not be disassembled again. This can prevent users from disassembling the pipe fitting privately and causing safety accidents, and ensure the reliability and safety of the connection of the gas delivery pipeline.
Owner:NINGBO XINYIDA ENERGY EQUIP MFG CO LTD
Three-dimensional ferroelectric memory with igzo channel and method of fabrication
PendingCN122679640AReduce static power consumptionReduce bit line leakage
This application relates to the field of in-memory computing memory technology, and more particularly to a three-dimensional ferroelectric memory with an IGZO channel and its fabrication method. The three-dimensional ferroelectric memory with an IGZO channel includes: a bottom global gate line; a center select gate extending vertically relative to the bottom global gate line; a semiconductor stack structure including a gate metal layer, a ferroelectric layer, a gate oxide layer, and an IGZO channel sequentially surrounding the center select gate; a drain and a source extending horizontally relative to the center select gate into the semiconductor stack structure and contacting the ferroelectric layer; and multiple pairs of drains and sources spaced apart along the extension direction of the center select gate to form multiple ferroelectric memory transistor cells. The three-dimensional ferroelectric memory with an IGZO channel of this application improves the durability and reliability of non-volatile memory devices.
Owner:张沁言 +1
Damping lubricated valve stem
The utility model discloses a shock absorption lubrication valve stem, it includes valve stem body, and the contraction portion is equipped with in valve stem body middle section, and the contraction portion is equipped with the shock absorption lubrication subassembly that is composed of the upper circular platform and lower circular platform of the upper and lower interval arrangement on the sleeve. The through hole of the interference fit with the contraction portion is set up in the center of upper and lower circular platform, and the first spiral oil storage groove filled with the lubricating grease and the second spiral oil storage groove are respectively screwed on the conical side surface. The big bottom surface of upper and lower circular platform is opposite, and the first arc convex and the second arc convex that are staggered distribution are respectively equipped on it. The utility model discloses through spiral oil storage groove realizes self -lubricating, through arc convex and circular platform combination form multiple shock absorption heat preservation air gap, and through the friction reducing convex point reduces the contact area, and the wear resistance, the impact resistance and the sealing member anti -icing effect of valve stem are comprehensively promoted, especially suitable for the low temperature working condition of limited space.
Owner:盐城市翰达石化机械有限公司
Double-island beam diaphragm high-pressure sensor chip and preparation method thereof
This invention belongs to the technical field of silicon-based piezoresistive high-pressure sensors, and specifically relates to a dual-island beam membrane high-pressure sensor chip and its fabrication method. The chip features a dual-island beam on a sensitive membrane; a set of piezoresistive strips are arranged on the upper surface of the dual-island beams, positioned along two center lines of the chip body; the dual-island beams include an island and an island, with their ends connected to the device layer, insulating layer, and support layer via a beam body; the upper surfaces of the islands are flush with the upper surface of the beam body; this significantly enhances the lateral and longitudinal stress difference in the stress concentration area, making the stress concentration effect more pronounced, improving the sensor's sensitivity, and ensuring reliable measurement results under various operating conditions.
Owner:CHINA NAT PETROLEUM CORP +1
Waterproof film and preparation method thereof
PendingCN121950046AImprove waterproof performanceImprove breathabilityNon-woven fabricsPolyimide substratePolymer science
The invention relates to the technical field of waterproof membranes, in particular to a waterproof membrane and a preparation method thereof.The waterproof membrane is composed of a polyimide (PI) base membrane, a solvent and a hydrophobing agent, polyimide is a continuous phase, the hydrophobing agent is evenly dispersed among polyimide molecular chains through the solvent, and an integrated composite structure with a super-hydrophobic surface, breathable channels and sound transmission channels is formed; the preparation method comprises the following steps: dissolving polyimide in a solvent to form a homogeneous solution, adding a hydrophobic agent into the obtained solution, carrying out ultrasonic dispersion treatment to form a homogeneous mixed solution, carrying out film forming on the mixed solution through a tape casting or spinning process, and carrying out drying and heat treatment on the film-formed material to obtain the composite film. Molecular-level uniform dispersion of a hydrophobic agent is realized in a polyimide base material, and the hydrophobic agent is directionally enriched on the surface in a film forming process, so that a super-hydrophobic layer with micro-nano roughness is formed, the waterproof performance of the material is greatly improved, and the water contact angle is far beyond that of a common polyimide film.
Owner:SUZHOU XIAOYIJIA PHOTOELECTRIC TECH CO LTD
Wireless integrated controller for a lighting system
The utility model relates to wireless integrated controller technical field discloses a kind of wireless integrated controller of lighting system, including wireless integrated controller main body, the side of the wireless integrated controller main body is hinged with shielding cover by hinge, the outside of the wireless integrated controller main body is fixed with installation shell, the device is provided with reinforcing mechanism, wireless integrated controller main body can be realized to the intelligent management of lighting equipment by wireless communication technology, when wireless integrated controller main body is installed, reinforcing when wireless integrated controller main body installation is conveniently completed, prevent the loosening or drop of equipment due to vibration or external force impact, save space and realize physical locking, can guarantee long-term reliability after installation;The device is provided with closure mechanism, the outside of fixed block is shielded and limited by movable sleeve, improve the closure stability of shielding cover, ensure that shielding cover protects the stable structure of operating knob outside wireless integrated controller main body.
Owner:HUBEI MINGJIN TECHNOLOGY CO LTD
Radio frequency coaxial wire outer conductor trimming alarm system and method
PendingCN121982853AOvercoming the problem of insufficient detection sensitivityExcellent false alarm rateMeasurement devicesBiological modelsNerve networkCoaxial cable
The invention relates to the technical field of communication, discloses an edge cutting alarm system and method for an outer conductor of a radio frequency coaxial wire, and aims at solving the problems that in the prior art, monitoring is lagged in the edge cutting process, the abnormality recognition capability is weak, an active alarm mechanism is lacked, and the defect detection rate is low due to the fact that multi-source signals are not fused. The method comprises the following steps: collecting physical deformation and electromagnetic scattering parameter signals in real time through a multi-mode sensor; extracting characteristics such as edge flatness deviation, notch width fluctuation, stress concentration index and impedance continuity sudden change; generating an abnormal feature vector through an abnormal feature fusion neural network; calculating a risk score based on a Gaussian process risk assessment model; triggering a grading alarm according to the score and pushing the grading alarm to a man-machine terminal; and meanwhile, a data closed-loop optimization model is recorded. According to the technical scheme, high-sensitivity defect detection, dynamic adaptation to process drift, low false alarm rate and hierarchical linkage alarm are achieved, and the product quality and the production reliability are remarkably improved.
Owner:CHENGDU DATANG CABLE
A tunnel collapse collaborative treatment system and method based on twin model prediction
PendingCN122260883Aimprove scienceHigh forward-lookingSimulator controlStructural reliabilityClosed loop
The application discloses a tunnel collapse collaborative treatment system and method based on a twin model prediction, and belongs to the technical field of underground engineering disaster prevention and treatment. The system comprises a multi-source fusion intelligent perception layer, a digital twin analysis and decision-making layer and a distributed collaborative execution layer. The perception layer collects data in real time; the decision-making layer constructs a dynamic digital twin and runs a model prediction control algorithm, performs simulation prediction and rolling optimization, and generates collaborative control instructions; and each terminal of the execution layer receives the instructions and collaborates. Through the "perception-simulation-prediction-execution" closed loop, the digital twin and advanced process control theory are deeply integrated, the problems of traditional treatment measures, such as dispersion, poor collaboration and decision lag, are solved, advanced simulation, dynamic optimization and adaptive collaborative control of the collapse treatment process are realized, and the safety, efficiency and structural reliability are significantly improved.
Owner:NORTHWEST ENGINEERING CORPORATION LIMITED
Digital intelligent cleaning robot flight base station
PendingCN121945511AImprove operational efficiencyExpand the operating radiusCarpet cleanersFloor cleanersWater storage tankBrush
The invention discloses a digital intelligent cleaning robot flight base station, and belongs to the field of training device unmanned aerial vehicles and corollary equipment thereof. The rack assembly comprises a bottom support, an upper bottom plate, a lower bottom plate, side plates used for connecting the upper bottom plate and the lower bottom plate, and supporting connecting rods. The upper bottom plate is provided with a parking position; the unmanned aerial vehicle assembly is mounted at the top of the rack assembly; the power supply system comprises a blade battery pack; the blade battery pack is mounted in the rack assembly; the water supply supplementing system comprises a water storage tank and multiple paths of water supplementing pipelines controlled by a tee joint and an electromagnetic valve; the self-cleaning assemblies are arranged at the upper ends of the corresponding parking positions. Compared with a ground fixed base station, the working radius and scene adaptability of the cleaning robot are expanded, and the cleaning robot rolling brush can be maintained by arranging the self-cleaning assembly, the water supplementing supply system and the electricity supplementing supply system. The method supports real-time state mapping and cooperative scheduling of multiple cleaning robots. The platform can realize automatic task allocation and intelligent decision schemes.
Owner:JIANGSU UNIV