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23038results about How to "Improve general performance" patented technology

Temperature measurement and calibration platform in space vacuum environment

ActiveCN102539019ASolve the problem of large differences in measurement resultsSolve the traceability problemThermometer testing/calibrationVacuum pumpingSpace environment
The invention relates to a temperature measurement and calibration platform in space vacuum environment. The temperature measurement and calibration platform is favorable for realizing the simultaneous calibration of contact type temperature measurement and non-contact type temperature measurement, so the temperature measurement and calibration platform is served for heat vacuum and heat balance experiments of spacecrafts such as satellites, spaceship and the like. The temperature measurement and calibration platform comprises a constant temperature bath, wherein a double-sub-cavity vacuum cavity, the double-sub-cavity vacuum cavity comprises a first vacuum cavity body and a second vacuum cavity body, the first vacuum cavity body and the second vacuum cavity body are connected with a vacuum pumping device through a three-way valve, standard temperature indicator sensors are respectively arranged on the outer wall of the first vacuum cavity body and on the outer wall of the second vacuum cavity body, the standard temperature indicator sensors are connected with a temperature secondary meter, a laser light path reflecting device is arranged in the vacuum cavity of the first vacuum cavity body for calibrating a non-contact type temperature measuring system based on the tunable diode laser absorption spectrum technology, and the vacuum cavity of the second vacuum cavity body is used for accommodating a temperature sensor for calibrating a contact type temperature measuring system adopting the temperature sensor.
Owner:BEIJING DONGFANG MEASUREMENT & TEST INST

End-to-end identification method for scene text with random shape

The invention discloses an end-to-end identification method for a scene text with a random shape. The method comprises the steps of extracting a text characteristic through a characteristic pyramid network for generating a candidate text box by an area extracting network; adjusting the position of the candidate text box through quick area classification regression branch for obtaining more accurate position of a text bounding box; inputting the position information of the bounding box into a dividing branch, obtaining a predicated character sequence through a pixel voting algorithm; and finally processing the predicated character sequence through a weighted editing distance algorithm, finding out a most matched word of the predicated character sequence in a given dictionary, thereby obtaining a final text identification result. According to the method of the invention, the scene texts with the random shape can be simultaneously detected and identified, wherein the scene texts comprisehorizontal text, multidirectional text and curved text. Furthermore end-to-end training can be completely performed. Compared with prior art, the identification method according to the invention has advantages of obtaining advantageous effects in accuracy and versatility, and realizing high application value.
Owner:HUAZHONG UNIV OF SCI & TECH

Method and apparatus for computing lithium ion batteries residual electric energy

InactiveCN101303397ACorrect current integration errorImprove accuracyElectrical testingElectrical batteryElectric energy
The invention provides a computing method of surplus energy of a lithium-ion battery and a device thereof. The method makes use of the combination method of the open circuit voltage of a lithium-ion battery pack and electric energy integral to compute the energy of charge and discharge, and according to the size of the open circuit voltage and the charge and discharge current, the DC impedance of the lithium-ion is computed in real time, and then the parameters such as DC impedance, charge and discharge currents, and the like, are used for determining the corresponding open circuit voltage of the available surplus energy of the lithium-ion battery pack under present circumstances when the discharge reaches a final voltage; on the basis of the present open circuit voltage, the actual surplus energy of the lithium-ion battery pack is computed when the discharge reaches the final voltage at last, the battery surplus energy available is obtained by the largest surplus energy minus the surplus energy in discharge termination condition. The computing method of the invention is applicable to accurately estimating the surplus energy of the battery in various conditions and the usage characteristics of a power battery and has the advantages of high accuracy, comparatively high practicability and high popularization value.
Owner:HEBEI UNIV OF TECH

Cross-platform extendible satellite dynamic simulation test system

The invention discloses a cross-platform extendible satellite dynamic simulation test system, which comprises a satellite attitude control system simulator, a flight environment and motion simulator, a satellite basic subsystem simulator and an operation monitoring and management system simulator. The satellite attitude control system simulator comprises a sensor simulator, a controller simulatorand an actuating mechanism simulator; the flight environment and motion simulator comprises an orbit and attitude dynamics resolver, a celestial body simulator, a kinematics and dynamics turntable, akinematics and dynamics translation platform, a hot vacuum and electromagnetic environment simulator and the like; and the satellite basic subsystem simulator comprises a power supply subsystem simulator and a remote measuring and remote control subsystem simulator. The operation monitoring and management system simulates functions of a satellite ground measurement and control center, such as remote measuring data decoding, remote control command generating, data archiving and analyzing and operation managing. The cross-platform extendible satellite dynamic simulation test system has strong extendibility, can be conveniently transplanted on a development and debugging platform, a distributed real-time simulation platform and an embedded semi-physical real-time simulation platform.
Owner:BEIHANG UNIV

Functional oil microencapsulation and manufacturing method thereof

The invention provides a functional oil microencapsulation and a manufacturing method thereof and relates to a microencapsulation, and the functional oil microencapsulation has the advantages of high stability and immobilized proteinaceous pellicle. The oil microencapsulation is prepared from the following raw materials: functional oil, plant oil, an antioxidant, aqueous-phase main-wall materials, aqueous-phase auxiliary-wall materials, bio-enzyme protein and water. The plant oil serving as a carrier is mixed with the functional oil, then the antioxidant is added, and then the materials are heated and dissolved in water bath, thus obtaining an oil-phase core material solution; the aqueous-phase main-wall materials and the aqueous-phase auxiliary-wall materials are added into deionized water, and then the materials are heated and dissolved in water bath, thus obtaining an aqueous-phase wall material solution; the oil-phase core material solution is added in the aqueous-phase wall material solution, the mixture is sheared and emulsified by a shearing machine, and then is homogenized by a homogenizer, thus obtaining a nanometer-level solution with uniform oil drop diameter; and bio-enzyme is added into the nanometer-level solution, the mixture is placed in hot-water bath for heating and stirring reaction, temperature is raised after the reaction so as to enable the bio-enzyme to be inactivated, and drying is carried out, thus obtaining the functional oil microencapsulation.
Owner:XIAMEN KINGDOMWAY BIOTECH CO LTD +1

Under-actuated manipulator claw for picking fruits and vegetables

The invention discloses an under-actuated manipulator claw for picking fruits and vegetables. At present, fruits and vegetables are manually picked basically. The under-actuated manipulator claw for picking the fruits and the vegetables comprises a machine frame, a driving transmission mechanism and a finger mechanism, and particularly comprises an upper base, a finger fixing component, a supporting post, a lower base, a step motor, a screw rod, a nut, a lifting platform, a guiding post, a far finger, a middle finger, a near finger, a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a driving rod, a first torsion spring and a second torsion spring. A plurality of fingers are driven by one step motor at the same time, an under-actuated finger mechanism is adopted, and the torsion springs are used as a limiting mechanism, so that the under-actuated manipulator claw for picking the fruits and the vegetables has enwrapping and clawing functions; and a contact force sensor is arranged on a clawing surface, so that the clawing force can be fed back and controlled through detection of the contact force; the under-actuated manipulator claw for picking the fruits and the vegetables is simple in structure and easy to control; and the self adapting capability of the under-actuated manipulator claw to the shape of an object is improved; and the clawing stability is improved. Therefore, the fruits and the vegetables can be picked in a damage-free way.
Owner:ZHEJIANG UNIV

Small rotor unmanned aerial vehicle autonomous obstacle avoidance flight control system and control method

The invention discloses a small rotor unmanned aerial vehicle autonomous obstacle avoidance flight control system and a control method. The system comprises an autonomous flight control system, a ground station control system and a manual emergency intervention system. The autonomous flight control system comprises a flight control computer module, an obstacle detection module, a navigation and positioning module, a driving control module, an execution mechanism, an attitude reference module and a wireless communication link module. The ground station control system comprises a wireless data transmission link module and a ground control console. The manual emergency intervention system comprises a remote control receiver and a Futaba remote controller. A corresponding small rotor unmanned aerial vehicle autonomous obstacle avoidance flight control method is also provided. The autonomous obstacle avoidance flight control system is divided into three parts, a complete small rotor helicopter autonomous obstacle avoidance flight control system which integrates the autonomous flight control system, a dynamic flight path planning system and an emergency treatment mechanism as a whole is provided, and flight environment adaptability and job task universality are strong.
Owner:成都优艾维智能科技有限责任公司 +1

Time-resolved extreme-low-light multispectral imaging system and method

ActiveCN102393248AResolve time resolutionSolve the time resolution by using single photon counter line arraySpectrum investigationPhysicsHyperspectral imaging
The invention provides a time-resolved extreme-low-light multispectral imaging system and method and belongs to the field of extreme-low-light multispectral imaging, wherein the system is triggered through a trigger to ensure the time-resolved property, and the multispectral high-resolution two-dimensional color imaging for extreme-low-light objects is realized by combining a triggering technology of the trigger, the compressive sensing theory, a DLP (digital light processing) technology, a spectrum-dividing technology, an optical fiber coupling technology and a photon counter linear array detection technology; the system is composed of an extreme-low-light light source or self-luminous organisms, the trigger, an optical filter, an optical imaging system, a DMD (digital mirror device) micromirror array, an optical focussing and collecting system, a spectrophotometer, a photo counter lineary array consisting of a plurality of photon counters with different wavelengths, a driving control module and an optimization algorithm module; the sensitivity of the system can reach the level of a photon, and can be widely applied to the fields of self-luminous organism detection, medical treatment imaging, data acquisition, communication, astronomy, military, hyperspectral imaging, measurement in quantum mechanics and the like.
Owner:NAT SPACE SCI CENT CAS

Full-automatic PCB labeling machine and implementation method thereof

The invention relates to the field of labeling equipment and in particular relates to a full-automatic PCB labeling machine and an implementation method thereof. The full-automatic PCB labeling machine comprises a frame, wherein a runner mechanism used for conveying PCBs is arranged in the frame; a label supply mechanism used for supplying label strips and stripping to-be-attached labels in the label strips is arranged at a position, which is positioned on the runner mechanism, in the frame; a labeling manipulator mechanism used for transferring and attaching the to-be-attached labels to the corresponding positions on the PCB is arranged at a position, which is positioned at the output end of the label supply mechanism, on the runner mechanism; and a labeling induction camera used for identifying position information of the to-be-attached labels of the PCB and label information is arranged on the labeling manipulator mechanism. According to the labeling machine disclosed by the invention, the on-line synchronization between production site information and an internal or external system information network can be realized by virtue of a network communication module in a control cabinet, the labels are attached to the surfaces of the PCBs or components with different angles, the labeling application range is wide, and the universality is high; and moreover, different materials can be adhered, the integration is high, the automation is high, the manual operation is not required, and the labeling sequence, labeling strength and frequency can be changed according to needs.
Owner:SHENZHEN BORWIN PRECISION MACHINERY

Device for automatically assembling fuel battery galvanic pile

The invention provides a device for automatically assembling a fuel battery galvanic pile and belongs to the technical field of fuel batteries. The device comprises a stander, a pressure adjustable compression device, an automatic guide rod pull and location device and an automatic nut twisting device, wherein the pressure adjustable compression device and the automatic guide rod pull and location device are respectively fixed at two ends of the stander; and the automatic nut twisting device is movably arranged on the stander. By the device, the integration of combination and assembly of a galvanic pile component can be realized, so the automation degree is higher, the operation is convenient and quick, and the assembling efficiency of the fuel battery is improved; by exchanging an upper pressing block and a tray, the device can be applicable to fuel battery galvanic piles of various specifications and sizes, the uniformity is high, and the equipment cost for assembling the fuel batteries of different types can be reduced; by the upper pressing block ,a uniform assembling pressure can be provided, so a bipolar plate inside the galvanic pile is contacted with a membrane electrode assembly (MEA) uniformly, the contact resistance is reduced and the performance of the fuel battery is improved.
Owner:上海氢晨新能源科技有限公司

Experiment teaching system based on cloud desktop

The invention discloses an experiment teaching system based on a cloud desktop. The experiment teaching system based on the cloud desktop comprises a virtualized server resource pool, wherein a plurality of physical servers are arranged inside the virtualized server resource pool; each physical server is provided with a plurality of virtual machines; a cloud desktop experimental terminal is connected with the physical servers in the virtualized server resource pool through a desktop net interchanger; a main management server is connected with the physical servers through a management net interchanger and is further connected with the desktop net interchanger; a storage server is connected with the physical servers through a storage net interchanger; the physical servers is connected with at least one application server through an application net interchanger. The cloud desktop remote access and the virtual machine technology are utilized, hardware cost and maintenance cost are effectively lowered, and the resource utilization rate is improved. The cloud desktop experimental terminal is low in configuration demand and high in universality and flexibility. The standardization and refinement of the experiment teaching process are improved, safety is high, and the supervision and administration capacity of experiment teaching is enhanced.
Owner:HAIYU SCI & TECH DEV GUIZHOU PROV +1

Industrial robot motion planning and performance testing system and implementation method thereof

The invention relates to an industrial robot motion planning and performance testing system and an implementation method thereof. The system comprises a database module, a man-machine interaction module, a spray gun track planning module, an analysis and display module, a robot job instruction generation module and a communication and interface module, wherein the database module realizes storage of the spray gun track and the joint variable of the spraying robot as well as the spraying tasks; the man-machine interaction module realizes parameter input and control on other modules; the spray gun track planning module is used for planning a spray gun track for optimizing the spraying effect and working out the joint variable corresponding to the track on the premise of meeting all the limits; the analysis and display module simulates and analyzes the spraying process of the spraying robot; the robot job instruction generation module realizes the function of generating spraying robot job files; and the communication and interface module is used for importing spraying task data, and uploading and downloading job files. The invention has the advantages of high programming speed, high accuracy, complete functions and strong versatility, and can be used for scientific research in various types of robots and control on the actual spraying operating system.
Owner:GUANGDONG UNIV OF TECH

Coffee pot with function of grinding coffee beans

The invention provides a coffee pot with a function of grinding coffee beans. The coffee pot comprises a water tank and a heater, wherein the water tank and the heater are arranged in a shell; the top part of the shell is provided with an upper cover; the upper cover and the shell form a big coffee pot body; a crushing container which is movably connected with the big coffee pot body is arranged on the big coffee pot body; a water inlet and a water outlet, which are communicated with each other, are arranged on the crushing container, the big coffee pot body is provided with a driving component opposite to the crushing container; and the driving component is in transmission connection with the crushing heating container. A control method for the coffee pot with the function of grinding coffee beans comprises: a grinding step, which comprises that a motor drives a crushing blade on a cutter shaft to rotate so as to grind the coffee beans in a brewing cavity; and a brewing step, which comprises that after being heated by the heater, water in the water tank is fed into the brewing cavity through a hot water spray nozzle to brew and dissolve coffee powder. According to the invention, the crushing heating container is added, so that the coffee pot can brew coffee by using both coffee beans and coffee powder, and meet using requirements of different users.
Owner:周林斌

General signal generator for radar target simulation

The invention, which relates to the technical field of the radar target simulation, discloses a general signal generator for radar target simulation. With the signal generator, a defect that the existing radar target signal generator is based on a special-purpose signal generator and only serve a radar system with a specific type in terms of frequency band coverage and function setting and thus the application range is limited can be solved. The signal generator comprises an embedded main control computer, a timing sequence control unit, an attenuation drive, a local oscillation module, a filtering, amplifying and limiting amplitude power divider, a plurality of digital radio frequency storage and playback modules, a plurality of Doppler frequency simulation modules, a radar cross section control module, a noise modulation module, a microwave down mixer, and IQ up mixing unit and the like. The output terminal of the microwave down mixer is connected with the filtering, amplifying and limiting amplitude power divider; the multiple digital radio frequency storage and playback modules are connected to the filtering, amplifying and limiting amplitude power divider; and the output terminal of each digital radio frequency storage and playback module is connected with one Doppler frequency simulation module.
Owner:THE 41ST INST OF CHINA ELECTRONICS TECH GRP

Single-photo-based human face animating method

The invention discloses a single-photo-based human face animating method, which belongs to the field of graph and image processing and computer vision. The method is to automatically reconstruct a three-dimensional model of a human face according to a single human front face photo and then to drive the reconstructed three-dimensional model to form personal human face animation. The method uses a human three-dimensional reconstruction unit and a human face animation unit, wherein the human face three-dimensional reconstruction unit carries out the following steps: generating a shape-change model off-line; automatically positioning the key points on the human faces by utilizing an active appearance model; adding eye and tooth grids to form a complete human face model; and obtaining the reconstruction result by texture mapping. The human face animation unit carries out the following steps: making animation data of far spaced key points; mapping the animation data onto a target human face model by using a radical primary function; realizing motion data interpolation by using spherical parametrization; and generating the motion of eyes. The method has the characteristics of high automation, robustness and sense of reality and is suitable to be used in field of film and television making, three-dimensional games and the like.
Owner:北京盛开智联科技有限公司

Time domain dynamic characteristic analysis-based intra-vehicle sound quality prediction method

The invention belongs to the technical field of sound quality prediction in vehicle vibration and noise analysis and control and relates to a time domain dynamic characteristic analysis-based intra-vehicle sound quality prediction method. With the method adopted, the problem of incapability of current intra-vehicle sound quality analysis researches to describe the time domain dynamic characteristics of intra-vehicle sound environment in vehicle regular driving can be solved. The method includes the following steps that: 1, a sound acquisition device is utilized to acquire an intra-vehicle sound signal sample; 2, framing and windowing processing is performed on the intra-vehicle sound signal sample; 3, a subjective evaluation test is performed on the intra-vehicle sound signal sample; 4, sound quality objective psychological acoustic parameters are calculated; 5, the time domain dynamic characteristic indexes of the objective psychological acoustic parameters are calculated, wherein the indexes include the variances of the objective psychological acoustic parameters and the ranges of the objective psychological acoustic parameters; 6, an intra-vehicle sound quality objective comprehensive evaluation model is established; 7, the output value of the sound quality objective comprehensive evaluation model is compared with a subjective evaluation value; and 8, a test sample is utilized to verify the model.
Owner:JILIN UNIV
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