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2109results about How to "Stable job" patented technology

Digital interaction enhancement system based on multi-mode voice

The invention relates to the technical field of digital interaction, in particular to a digital interaction enhancement system based on multi-modal voice, which comprises a multi-modal sensing module comprising a voice sensing unit, a visual sensing unit and an environment sensing unit and used for capturing multi-modal data input by a user; the multi-modal fusion module comprises a data synchronization unit, a feature extraction unit and a multi-modal fusion unit and is used for performing time synchronization, feature extraction and fusion processing on the multi-modal data; and the interactive understanding module comprises a natural language processing unit, a context understanding unit and an emotion analysis unit and is used for understanding the intention and the emotion state of the user. The deep learning technology is adopted to fuse voice, vision and environment data, and efficient and natural user interaction experience is achieved through the steps of feature extraction, feature fusion, intention recognition and the like. The system has excellent performance and a wide application prospect in a complex environment.
Owner:GUANGXI UNIV

Environment monitoring system based on optical sensor

The invention discloses an environmental monitoring system based on an optical sensor, and relates to the technical field of environmental monitoring, and the system comprises the following components: a quantum entanglement module, an optical sensor integration module, a quantum measurement and data processing module, and a data transmission and sharing module. By integrating the quantum entanglement module, the optical sensor integration module and the quantum measurement and data processing module, high-precision and real-time monitoring of environmental parameters is realized, the quantum entanglement technology provides measurement precision and anti-interference capability superior to those of a traditional optical sensor for the system, the accuracy and reliability of data are ensured, and meanwhile, the quantum entanglement technology can be used for monitoring the environmental parameters in real time. Due to the design of high sensitivity and wide dynamic range of the optical sensor, the system can stably work under various complex environment conditions, and the efficiency and accuracy of environment monitoring are effectively improved.
Owner:SHANGHAI YIJING MICROELECTRONICS TECH CO LTD

Method for dynamically adjusting resonant cavity frequency of cyclotron and tuning circuit

The invention discloses a method for dynamically adjusting the frequency of a resonant cavity of a cyclotron and a tuning circuit, which are applied to the field of cyclotrons and solve the problem that when the frequency of the resonant cavity of the cyclotron is adjusted by judging the magnitude of reflection power, due to the fact that the reflection power can change in multiple stages in a single macro pulse period, the frequency of the resonant cavity of the cyclotron is adjusted. And an accurate numerical value is difficult to obtain through a simple amplitude sampling circuit. According to the invention, through determining the stable resonance time period of the resonant cavity, the phase difference between the incident power signal and the reflection power signal is sampled in the corresponding stable resonance time period of the resonant cavity, and the change value of the phase difference between the incident power signal and the reflection power signal is dynamically compared. According to the conversion relation between the phase difference change value and the frequency change value, the resonant cavity frequency change value is obtained through conversion, then the resonant cavity tuning device is adjusted to enable the resonant cavity frequency to be consistent with the frequency of the incident power signal all the time, and the dynamic tuning method of the resonant cavity is achieved.
Owner:中子科学(重庆)研究院有限公司

Full-temperature-range polymer-based solid electrolyte, solid-state battery and preparation method

The invention relates to a full-temperature-range polymer-based solid electrolyte, a solid-state battery and a preparation method. Mixing alkali metal salt, a polymer monomer and a plasticizer to obtain an electrolyte precursor; the polymer monomer comprises a fluorinated acrylate compound; the plasticizer comprises a fluorinated carboxylic ester compound, a fluorinated carbonic ester compound or a fluorinated amide compound; and adding an initiator into the electrolyte precursor, heating and polymerizing to obtain the polymer-based solid electrolyte with the polar functional group forming the dipole group, namely the full-temperature-range polymer-based solid electrolyte. A polymer monomer with a soft long side chain is used, and plasticizer molecules are anchored between polymer chains, so that leakage of the plasticizer molecules and parasitic reaction between the plasticizer molecules and an electrode are reduced, and the interface stability of the electrolyte in a high-temperature environment is improved; a polar functional group in the solid electrolyte has relatively high electronegativity, and the formed dipole interacts with alkali metal ions, so that the ions are quickly decoupled from a polymer matrix, and the low-temperature conductivity is favorably improved.
Owner:SOLID IONIC POWER TECHNOLOGY (WUHAN) CO LTD

Fire-fighting engineering power system integrated control device

The invention relates to the technical field of integrated control devices, in particular to a fire engineering power system integrated control device which comprises a fixed bottom frame, an integrated control cabinet is fixedly connected to the top end of the fixed bottom frame, and an integrated control unit is fixedly connected to the interior of the integrated control cabinet. A cabinet door is rotationally connected to the outer wall of the integrated control cabinet body, a touch panel is connected to the outer wall of the cabinet door in an embedded mode, the touch panel is electrically connected with the integrated control unit, and air exhaust and dust removal mechanisms are arranged at the two ends of the integrated control cabinet body correspondingly. The air exhaust fan can be driven to exhaust hot air in the integrated control cabinet body to the outside for ventilation and heat dissipation, meanwhile, after the heat dissipation effect of the air exhaust fan is reduced and the temperature continuously rises, cold air is generated and cold air cooling is carried out in a saltpeter ice making mode, so that the temperature of the integrated control cabinet body is rapidly reduced, and stable work of the integrated control unit is guaranteed.
Owner:BEIJING AEROSPACE FOUNDATION TECHNOLOGY CO LTD

Pixel projection lens and automobile

The invention discloses a pixel projection lens and an automobile, and relates to the technical field of automobile illumination, the pixel projection lens is provided with an object side and an image side which are correspondingly arranged along the optical axis direction, the pixel projection lens comprises a first lens, a second lens, a third lens, a fourth lens and an image surface from the object side to the image side in sequence, the focal length of the first lens is f1, the focal length of the second lens is f2, the focal length of the third lens is f3, the focal length of the fourth lens is f4, and the pixel projection lens meets the following conditions: 10lt; f1lt; 20; -6 lt; f2lt; f2lt; -14.5,-14.5,-14.5; 30 lt; f3lt; f3t; 40); 35 lt; f4lt; f4t; 50; the first lens and the second lens are aspheric lenses, and the third lens and the fourth lens are glass spherical lenses. By means of the arrangement, the pixel projection lens is good in imaging quality and good in stability and can not defocus under the environment condition of-40 DEG C to 105 DEG C, and therefore it is fully guaranteed that the pixel projection lens works stably in the environment with the large temperature difference.
Owner:ZHONGSHAN UNITED AUTOMOBILE TECH CO LTD

Bidirectional automatic seedbed and potted flower transfer device and transfer method

The invention relates to a bidirectional automatic seedbed and potted flower transfer device and method. The bidirectional automatic seedbed and potted flower transfer device comprises a conveying mechanism, a lifting mechanism, a push-pull mechanism, a grabbing mechanism, a conveying mechanism and a control system. The conveying mechanism comprises a seedbed frame, a motor, a chain, a transverse conveying supporting wheel and a chain wheel, the lifting mechanism comprises an air cylinder, a telescopic rod and a supporting rod supported on an air cylinder shaft and the telescopic rod, the push-pull mechanism comprises a push plate, a small air cylinder, a moving frame, a rail and a motor, and the grabbing mechanism comprises a portal frame and a mechanical arm. The conveying mechanism comprises a guide frame, an angle iron rail and a belt conveyor; the control system comprises a controller, a limit switch, a proximity switch, a magnetic reed switch and a photoelectric counter and is used for monitoring the position of the seedbed, accurately starting and stopping the seedbed and counting flowers. Bidirectional orderly automatic transfer of potted flowers entering and moving out of a cultivation greenhouse can be achieved, the working efficiency is improved, and the labor intensity is reduced.
Owner:SHANDONG AGRICULTURAL UNIVERSITY +2

Optimized fault-tolerant control method suitable for cascaded solid-state transformer

The invention discloses an optimized fault-tolerant control method suitable for a cascaded solid-state transformer. On the basis of the basic control link of the cascade converter, the bus voltage of each normally operating cascade module in the switching process and the bus voltage of the redundant module are detected, and according to the current modulation signal of each cascade module, the new modulation signal of each cascade module is dynamically calculated and obtained; the fluctuation of voltage and current in each stage of the switching process can be reduced. According to the invention, the problem that the current impact is too large when the whole system is switched due to the fault of one cascade module in the cascade converter is solved. According to the method, no additional circuit needs to be added, smooth switching of the cascade converter can be achieved when the fault occurs, the whole system can continue to work stably, and collapse of the whole system caused by over-current protection is prevented.
Owner:ZHEJIANG UNIV

Hoop bending machine special for steel bar machining

The utility model relates to the technical field of reinforcing steel bar processing, and discloses a special hoop bending machine for reinforcing steel bar processing, which comprises a frame, a hydraulic clamp is arranged in the middle of the frame, a plurality of straightening guide wheels are rotatably connected to the front side of the frame, and the straightening guide wheels are symmetrically distributed up and down. Wherein the middle portions of the two straightening guide wheels are fixedly connected with first gears through rotating shafts, the two first gears are meshed, the inner top wall of the frame is fixedly connected with a first motor, the output end of the first motor is fixedly connected with a cam, and the middle portion of one first gear is fixedly connected to the side, away from the first motor, of the cam. According to the utility model, when steel bars are straightened and conveyed along with the operation of the hoop bending machine, lubricating oil can be continuously pumped out of the oil tank and fed into the hoop bending assembly for lubrication by virtue of the matching of the cam and the piston, so that the abrasion of the hoop bending machine during working is reduced, the service life of the hoop bending machine is prolonged, and the stability of the hoop bending machine during working is ensured; and the hoop bending precision is improved.
Owner:SHAANXI QINBANG MATERIALS CO LTD

Carbon ceramic composite conductive microsphere, ceramic resistor and preparation method

The invention discloses a carbon ceramic composite conductive microsphere, a ceramic resistor and a preparation method, and belongs to the technical field of production of special materials of electrical equipment, and the method comprises the following steps: sequentially dipping porous mullite in a precursor solution of carbon and slurry containing carbon black, and carrying out drying treatment and carbon burying sintering to obtain the carbon ceramic composite conductive microsphere; the preparation method comprises the following steps: preparing a ceramic raw material, performing vacuum-assisted centrifugal impregnation on the ceramic raw material and slurry consisting of a binder in pug consisting of the ceramic raw material and a surfactant, sequentially performing drying and glue discharging treatment, primary isostatic pressing forming and air pressure sintering, cooling to room temperature, and performing mechanical treatment and electrode spraying to obtain the ceramic resistor. Impregnation improves the dispersibility and uniformity of the carbon material in the porous mullite to form a continuous conductive path, the carbon black-containing slurry improves the conductivity of the ceramic resistor, carbon-buried sintering generates in-situ carbon with abundant types, the combination of carbon and a ceramic interface is promoted, and the oxidation resistance, mechanical properties and electrical properties of the ceramic resistor are improved.
Owner:XIAN XD HIGH VOLTAGE PORCELAIN INSULATOR CO LTD +2

Screening machine for precoated sand coating production

The invention provides a precoated sand coating production screening machine, belongs to the technical field of precoated sand production, and solves the technical problems that an existing screening machine is tedious in screen replacement, high in energy consumption, poor in screening effect and the like. Comprising a rack, an up-down vibration mechanism, a screen mechanism and a screen box mechanism, the screen box mechanism is hinged to the lower portion of the inner side of the rack, a transmission mechanism, a first driving motor and a high-pressure fan are arranged on the upper end face of the rack, an eccentric vibration mechanism is arranged on the side portion of the rack, and a plurality of reset springs are arranged between the left side and the right side of the screen box mechanism and the rack; a turning plate mechanism is arranged on the rear side of the screen box mechanism, a plurality of blower guns are arranged on the inner top of the screen box mechanism, a scattering roller is arranged on the rear side of the interior of the screen box mechanism, and a plurality of scraper mechanisms are arranged on the screen mechanism. The vibrating screen can vibrate up and down, is low in energy consumption, good in vibration effect and capable of vibrating left and right, enables raw materials to be dispersed, is high in screening efficiency, long in screening path, stable in screening quality, convenient to install and capable of being automatically cleaned, and ensures that the working environment is clean.
Owner:安徽兰翔泽茗制造有限公司

Embedded liquid metal microstructure electrode, flexible pressure sensor array and preparation method

The invention discloses an embedded liquid metal microstructure electrode, a flexible pressure sensor array and a preparation method. The technical problems that an existing flexible pressure sensor array is low in sensitivity, large in crosstalk and the like are solved. Wherein the embedded liquid metal microstructure electrode comprises a first flexible substrate, a first liquid metal layer and a first packaging layer; the lower surface of the first flexible substrate is a plane, and a plurality of micro-cone structures arranged in an array are uniformly distributed on the upper surface of the first flexible substrate; the cone part of each micro-cone structure faces upwards and is flush with the upper surface of the first flexible substrate; the first liquid metal layer covers the upper surface of the first flexible substrate and all the micro-cone structures; the first packaging layer covers one surface, far away from the upper surface of the first flexible substrate, of the first liquid metal layer; meanwhile, the invention further provides a preparation method of the microstructure electrode, a flexible pressure sensor array based on the microstructure electrode and a preparation method of the flexible pressure sensor array, and the flexible pressure sensor array is high in sensitivity and low in crosstalk.
Owner:XI AN JIAOTONG UNIV

High-speed rail passenger room illumination self-dimming control system

The invention discloses a high-speed rail passenger room lighting self-dimming control system, which relates to the technical field of high-speed rail passenger room electric lighting and comprises a passenger flow monitoring module, a central control module, a lighting partition module and a memory and storage module. According to the invention, the central control module continuously optimizes the lighting strategy according to the change trend of the passenger flow and the personalized lighting setting condition of each region, achieves the precise distribution of lighting resources, automatically reduces the lighting brightness of the region when the number of passengers in the region is reduced, avoids the unnecessary energy waste, and meanwhile, reduces the cost. The system further has a memory function and can identify preference settings of different passengers, when the passengers enter the same area again, previous personalized lighting settings are automatically called out, the passengers do not need to adjust again, in addition, the constant-current driving technology adopted by the invention can ensure that the lamp stably works under different input voltages and dimming states, and the system is suitable for popularization and application. The lamp life is prolonged.
Owner:SHENZHEN LONGYUN LIGHTING ELECTRIC APPLIANCES CO LTD

Method and device for detecting circle center position in laser spot image

The invention discloses a method and device for detecting the center position in a laser spot image, and the method comprises the steps: obtaining a laser spot image which is a fuzzy circle / circular ring light spot, and solving the center-of-gravity coordinate of the fuzzy circle / circular ring light spot as an initial center position; calculating radial distances from the initial circle center position along a plurality of different directions of the fuzzy circle / circular ring light spot, and calculating an average value of the radial distances in the different directions as an average radius; based on the average radius, utilizing a least square method to fit a new circle center position; and taking the new circle center position as an initial circle center position, repeating iterative calculation until the difference between the current fitting new circle center position and the previous fitting new circle center position is smaller than a preset threshold value, and determining the current fitting new circle center position as a final circle center position. The method is more accurate in circle center position detection and higher in calculation speed.
Owner:XIAN TECH UNIV

Metal pipeline welding device for municipal construction and welding method thereof

The invention relates to the field of municipal metal pipeline construction, and discloses a metal pipeline welding device for municipal construction and a welding method thereof.The metal pipeline welding device comprises a limiting component, and a welding component is rotationally mounted in the limiting component; the limiting component comprises a second arc-shaped frame, a connecting frame is welded to the outer surface of the middle of the second arc-shaped frame, a first arc-shaped frame is rotationally connected to the bottom end of the second arc-shaped frame, a threaded positioning rod is in threaded connection with one end of the top of the connecting frame, and a hinge is arranged at the bottom connecting position of the second arc-shaped frame and the first arc-shaped frame. Through cooperative operation between the welding part and the limiting part, the municipal metal pipeline can be automatically welded, the labor intensity of workers is reduced, the situation that the workers conduct welding work in a severe environment is avoided, meanwhile, the welding efficiency can be guaranteed through automatic welding, and the use requirement of people for the welding device is met.
Owner:DONGYING CIVICISM ENG CO

Lighting lamp with adjustable light range

The invention discloses a lighting lamp with an adjustable light range, and relates to the technical field of lighting lamps. The device comprises a driving motor, a reflecting plate, a light-emitting LED lamp, a reflecting light-gathering cover and the like. The light irradiation range is adjusted by rotating the reflecting plate, and conversion from concentrated illumination to annular scanning is achieved. The lamp is provided with an efficient heat dissipation system which comprises a temperature conduction lamp holder, heat dissipation fins and an intelligent control heat dissipation fan, and stable work of the LED lamp is guaranteed. The automatic reset mechanism enables the reflector to automatically recover to the initial position after stopping rotating, and operation is convenient and fast. The optimized air flow design improves the heat dissipation efficiency.
Owner:HAIPU ELECTRONICS (JIANGSU) CO LTD

3D attitude estimation method based on monocular camera, electronic equipment and storage medium

The invention discloses a 3D attitude estimation method based on a monocular camera, electronic equipment and a storage medium, and the method comprises the steps: firstly constructing a data set composed of real data and synthetic data, then detecting the positions of 2D skeleton key points for the data set through YoloPose, obtaining estimated 3D data through GHUM fitting, obtaining a 3D attitude data set of 3D attitude estimation, and carrying out the 3D attitude estimation of the 3D attitude data set. 3D dimension improvement is added into YoloPose to obtain a 3D attitude estimation model, and the 3D attitude estimation model is trained by the three-dimensional data set and is used for 3D attitude estimation of a two-dimensional image obtained by the monocular camera. The method is low in cost and easy to deploy, does not depend on additional sensors or equipment, can stably work in various illumination and complex environments, and can realize detection and attitude estimation through one deep learning model.
Owner:ESTUN MEDICAL TECH (NANJING) CO LTD

Automobile engine

InactiveCN102678314AAvoid loosening and shiftingEasily brokenMachines/enginesMechanical energy handlingStatorCrankshaft
The invention discloses an automobile engine which comprises an engine body, a crankshaft and an air conditioner generator. The air conditioner generator comprises a stator and a rotor and is placed on the front portion of the automobile engine and driven by the crankshaft of the automobile engine, and the axis of the stator of the air conditioner generator is coaxial to the axis of a main shaft neck of the crankshaft of the automobile engine. The automobile engine can supply power to vehicle-mounted air conditioner systems, and the air conditioner generator is arranged at the front end of the crankshaft of the automobile engine. The automobile engine requires no belt for driving and is simple in structure and convenient for the vehicle-mounted air conditioner system to adopt the whole distribution structure.
Owner:HUNAN VAQOUNG ELECTRIC +1

Traveling wave electric curtain lunar dust conveying device based on three-dimensional electrode

The invention discloses a traveling wave electric curtain lunar dust conveying device based on three-dimensional electrodes, and relates to the field of lunar dust conveying. In order to solve the problems of low utilization rate of an electric field, easy abrasion of equipment and high energy consumption in the existing lunar dust transportation work in the prior art, the technical scheme provided by the invention is as follows: the traveling wave electric curtain lunar dust transportation device based on the three-dimensional electrode comprises a substrate; the wedge-shaped microstructure is arranged on the upper surface of the substrate, and the wedge-shaped microstructure is in a triangular prism shape; and the electrodes are arranged on the side walls of the wedge-shaped microstructures and used for generating electrodes and transporting lunar dust particles. The invention also provides a traveling wave electric curtain lunar dust transportation method based on the three-dimensional electrode, the method is realized based on the device, and the method comprises the following steps: collecting the motion state of lunar dust particles; a step of adjusting a driving voltage according to the motion state; and driving the electrode according to the adjusted driving voltage. The lunar dust conveying device is suitable for lunar dust conveying work.
Owner:HARBIN INST OF TECH

Environment-friendly mobile collecting box for decoration cutting dust

ActiveCN108636005AThe dragging process is smoothAvoid secondary flyingUsing liquid separation agentWorking accessoriesEngineeringWater tanks
Provided is an environment-friendly mobile collecting box for decoration cutting dust. The mobile collecting box comprises a box body, wherein a water tank is fixedly mounted on one side of the bottomsurface of the inner wall of the box body, the bottom surface and the outer side of the water tank are fixedly connected to the inner wall of the box body separately, the inner side of the water tankis fixedly connected to one side of the box body, and openings are formed in the top surface and the other side of the box body; a first through hole is formed in the bottom of the inner side of theinner wall of the water tank, a switching valve is disposed in the first through hole, and a second through hole is formed in one side of the box body; the interior of the first through hole communicates with the interior of the second through hole, and the second through hole communicates with the interior of the box body; the top surface of the water tank is fixedly connected to one end of a hose, and the other end of the hose is arranged in the box body, and a floating plate is fixedly mounted on the periphery of the other end of the hose. Sediment in the box body can be pushed directly into the garbage bag through cooperative use of a mud box and a garbage bag, and the mud box can be taken and placed freely; after the mud box is taken out, a sealing cap of the garbage bag containing the sediment is removed, and after the garbage bag is replaced by a new garbage bag, the mud box is put back, and the sediment is not in contact with the mud box, and cleaning of the mud box by a user is not needed, so that time and labor are saved.
Owner:CHONGQING VOCATIONAL COLLEGE OF TRANSPORTATION

Method for detecting working state of coal face based on YOLOv8

The invention discloses a coal face working state detection method based on YOLOv8. The method comprises the following steps of 1, obtaining a data set of all working states of a coal face; step 2, a YOLOv8-EST network is constructed; 3, inputting the working state data set of the coal face into the improved YOLOv8 model for training to obtain a working state detection model of the coal face; and 4, inputting a to-be-identified coal face state picture into the coal face working state detection model to obtain a detection result of the working state of the to-be-identified coal face. According to the invention, the improved YOLOv8 target detection algorithm is constructed by adopting the YOLOv8 target detection algorithm, fusing the improved Swin Transform module and fusing the EMA attention mechanism, so that the real-time, efficient and accurate detection of the working state of the coal face is realized, and the production safety and efficiency are improved.
Owner:HEILONGJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Controllable anti-tilt swivel ball joint

The present invention discloses a controllable anti-overturning swivel ball joint, including a ball joint bracket, a lower ball joint, a limit pin and an upper ball joint. The lower ball joint is fixed on the ball joint bracket, the upper ball joint is coaxially and longitudinally stacked above the lower ball joint, the upper ball joint and the lower ball joint are spherically rotated and assembled, the limit pin is fixed at the center of the lower ball joint, the upper ball joint is provided with a limit hole for the limit pin to be inserted, the limit pin is a steel tube concrete structure, the upper ball joint is a circular convex spherical structure, and the lower ball joint is a circular concave spherical structure adapted to the upper ball joint. Compared with the prior art, the upper ball joint and the lower ball joint of the present invention are arranged in a hollow circular ring shape as a whole, and a narrower cross section can be achieved under the same bearing capacity, which is more conducive to ensuring the density of the concrete pouring at the bottom; the overall plane structure of the controllable anti-overturning swivel ball joint is annular, which is conducive to backfilling and sealing the center part after the rotation operation is completed, ensuring the safe use of the bridge in the later stage.
Owner:SOUTHWEST JIAODA CIVIL ENG DESIGN CO LTD +2

Anti-hail device for photovoltaic panel of photovoltaic power station

The utility model belongs to the technical field of photovoltaic power station photovoltaic panel protection devices, and particularly relates to a photovoltaic power station photovoltaic panel hail prevention device which comprises a supporting frame, a mounting plate fixedly connected to the upper end of the supporting frame, a photovoltaic panel fixedly connected to the upper end of the mounting plate, and a protection frame and a fixing assembly arranged at the upper end of the mounting plate. The mounting plate is connected with the protection frame through a fixing assembly, the photovoltaic panel is located in the protection frame, a protection plate and a buffer assembly are arranged in the protection frame, the protection frame is in sliding connection with the protection plate, and the protection plate is made of a transparent material. According to the utility model, through the arrangement of the fixing assembly, when the protection frame needs to be disassembled, the insertion rod is far away from the positioning hole of the positioning plate, so that the limitation on the protection frame is relieved, the protection frame can be conveniently taken down from the mounting plate, the photovoltaic panel in the protection frame can be conveniently replaced, and the working efficiency is improved.
Owner:WEIHAI HUATONG UNITED POWER TECH CO LTD

Track fastener state identification method based on three-section parallel network architecture

The invention provides a track fastener state recognition method based on a three-section type parallel network architecture. The method comprises the steps that a track inspection image is acquired; constructing a convolutional neural network (CNN) backbone network, and performing multi-scale feature extraction on the image of the track fastener; performing convolution processing and up-sampling processing on the fastener features by using the local feature branches to obtain local fastener features; performing global average pooling and convolution processing on the fastener features by using the global feature branches; the method comprises the following steps of: processing the characteristics of the fastener by using a mask generation branch of a framework based on Vision Transform, and generating a prototype mask of the track fastener; local, global and mask fastener features are fused; performing non-maximum suppression and mask generation on the fastener feature map; and analyzing the health state of the track fastener. According to the method, the CNN backbone network and the Vision Transform are combined, a new three-section parallel network architecture is provided, accurate identification and state analysis of the track fastener are realized through instance segmentation, and the identification accuracy in a complex environment is improved.
Owner:SHANDONG UNIV

Equipment startup and shutdown intelligent monitoring system and method based on data analysis

The invention discloses an equipment startup and shutdown intelligent monitoring system and method based on data analysis, and relates to the technical field of equipment monitoring. Equipment data of normal startup and shutdown of equipment in historical records are collected respectively, equipment data influencing startup and shutdown are extracted as preparation conditions, and position data of each preparation condition are collected; respectively constructing a pre-startup state and a pre-shutdown state of the equipment; screening the collected equipment data to obtain safety data of startup and shutdown of the equipment; constructing a start-stop process curve of all safety data, and calculating according to the start-stop process curve to obtain a start-stop safety time threshold value and a stop-start safety time threshold value of the equipment; when the equipment needs to be started and stopped, whether the real-time position data of the equipment meets the pre-starting state and the pre-stopping state or not is judged, and the real-time starting-stopping interval time and the stopping-starting interval time are judged through the starting-stopping safety time threshold value and the stopping-starting safety time threshold value.
Owner:SANXIA JINSHAJIANG YUNCHUAN HYDROPOWER DEV CO LTD

MEMS-assisted handheld MIMO-SAR security check imaging method

The invention discloses a handheld security check imaging method based on MEMS assistance, and aims to combine an MEMS sensor with an MIMO radar plate to form a handheld convenient security check imaging method with high precision and low cost according to the rapid and fine security check requirement of people in a security check place with dense people. Firstly, the radar board transmits a linear frequency modulation signal and receives an echo signal reflected by a target, and during the period, the MEMS sensor feeds back the motion track and position information of the handheld security check system in real time, and provides accurate attitude and position information. And secondly, position calibration is carried out on the track information of the MIMO radar antenna through the data of the MEMS sensor, and the zero drift of the accelerometer is compensated based on the wavelet packet change, so that the error caused by the system motion and the position change is reduced. And finally, residual phase errors are estimated and eliminated based on a particle swarm algorithm, non-contact three-dimensional imaging of the target is realized in combination with a wavenumber domain imaging algorithm on this basis, and hazardous article inspection is realized in combination with technologies such as deep learning and image recognition.
Owner:CHONGQING UNIV OF POSTS & TELECOMM

Aircraft flow field sensing device and method based on magnetic cilia

The invention provides an aircraft flow field sensing device and method based on magnetic cilia, and can be applied to the technical field of sensors. The aircraft flow field sensing device based on the magnetic cilia comprises a cilia array which comprises a plurality of magnetic cilia and is used for deforming under the action of external airflow of an aircraft; the first surface of the shell cover plate is provided with a plurality of cilium mounting holes, the plurality of cilium mounting holes are in a non-through state, and the cilium mounting holes are used for arranging a plurality of magnetic cilium; the magnetic sensor circuit board is arranged on the second face of the shell cover plate, the second face is the back face of the first face, a plurality of magnetic sensors are arranged on the magnetic sensor circuit board, and the number of the magnetic sensors is the same as that of the cilium installation holes. The positions of the plurality of magnetic sensors in the magnetic sensor circuit board are in one-to-one correspondence with the positions of the plurality of cilium mounting holes in the shell cover plate, and the magnetic sensor circuit board is used for sensing magnetic field changes generated under the condition that the magnetic cilium deforms.
Owner:AEROSPACE INFORMATION RES INST CAS

Detachable dustproof net structure of ice maker

The utility model relates to the technical field of ice makers, in particular to a detachable dustproof net structure of an ice maker. Comprising a shell, a condensation assembly and a dustproof net, the condensation assembly is arranged on a back plate of the shell, a guide structure is arranged on the inner side of the condensation assembly, an insertion opening is formed in the back plate, one end of the guide structure is communicated with the insertion opening, and the dustproof net is inserted into the guide structure through the insertion opening; according to the detachable dustproof net structure of the ice machine, the cleanness of the condenser can be effectively kept, the influence of accumulated dust on heat dissipation is prevented, the ice machine can stably work for a long time, the energy consumption is reduced, and the dustproof net can be quickly disassembled and assembled for cleaning and maintenance by virtue of the drawing type guide design.
Owner:GUANGDONG XINBAO ELECTRICAL APPLIANCES HLDG CO LTD

Automatic punching and grinding integrated equipment

ActiveCN222626884UImprove quality and yieldstable jobOther manufacturing equipments/toolsPunchingPolishing
Automatic punching and polishing integrated equipment is provided with a feeding and discharging station, a milling station, a punching station and a polishing station in advance in the circumferential direction at equal angles, the automatic punching and polishing integrated equipment comprises a material rotating mechanism, the material rotating mechanism comprises an index plate and a rotary driving assembly, four jig seats which are arranged at equal angles are arranged on the index plate in the circumferential direction, and the rotary driving assembly is connected with the index plate to drive the index plate to rotate; all the jig seats are sequentially moved to all the stations through rotation of the index plate. The milling mechanism is arranged on the top side of the milling station and is used for carrying out burr milling treatment on the workpieces conveyed to the milling station; the punching mechanism is arranged on the top side of the punching station and used for punching the workpieces conveyed to the punching station; and the polishing mechanism is arranged on the top side of the polishing station and used for polishing the workpieces conveyed to the polishing station. The equipment is production equipment capable of meeting rapid and integrated high punching and grinding requirements, and is stable in work, high in quality and yield of machined products and suitable for popularization.
Owner:KUNSHAN VEKAN PRECISION TECH CO LTD

High-frequency rapid charging and discharging aluminum electrolytic capacitor for servo motor and manufacturing method

The invention relates to the technical field of electrolytic capacitors, in particular to a high-frequency rapid charge and discharge aluminum electrolytic capacitor for a servo motor and a manufacturing method, the high-frequency rapid charge and discharge aluminum electrolytic capacitor comprises an anode foil, a cathode foil, a capacitor shell and electrolyte, porous electrolytic paper is arranged between the anode foil and the cathode foil, and oxide film layers are arranged on two sides of the anode foil. A stable and compact oxidation film is generated on the surface of the anode foil through the phosphoric acid formation liquid, so that the anode foil can withstand high-current impact, and the charging and discharging speed is greatly improved. According to the high-frequency rapid charging and discharging aluminum electrolytic capacitor for the servo motor and the manufacturing method, the high-frequency rapid charging and discharging aluminum electrolytic capacitor for the servo motor has excellent rapid charging and discharging performance, high voltage resistance, good temperature stability, long service life, high reliability and good heat dissipation performance.
Owner:SHENZHEN XINZHONGYUAN ELECTRONICS CO LTD