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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

Advertising information issuing system combined with positioning navigation

An advertising information issuing system combined with positioning navigation is characterized by comprising an advertising information issuing client, an advertising information server and a user terminal, wherein the advertising information issuing client realizes recording the advertising information of merchants, the advertising information server interrelates the advertising information with the geographical positions of the merchants and classifies the advertising information, and the user terminal is a movable equipment combining the positioning navigation with the issuing of the advertising information and comprises a satellite signal processing module, a navigation application module, a high-speed communication interface module, an advertising data storing module, an advertising matching module, an advertising preferential selection module, an advertising triggering module and an advertising information outputting module. The system has the advantages of well combining the positioning navigation with the advertising information issuing, triggering the advertising information conforming to the requirements automatically along the way according to user commands during the process of positioning navigation, and adding a new information communication channel between the merchants and the consumers.
Owner:深圳市莱科文化科技有限公司

Quad-rotor unmanned aerial vehicle (UAV) fault tolerance control method based on adaptive fault estimation observer

The invention discloses a quad-rotor UAV fault tolerance control method based on an adaptive fault estimation observer, and belongs to the field of aviation aircraft control. The method comprises thata fault model of a quad-rotor attitude system is established according to a dynamic model of a quad-rotor UAV by considering a performer fault of a UAV system; a performer of the UAV includes four rotor motors in practicality, faults correspond to the four rotor motors, the fault model is processed, the faults are divided into two groups decoupled mutually, and a final attitude fault model is obtained; according to the provided fault model, the adaptive fault estimation observer is designed, corresponding adaptive laws are provided, the performance fault is estimated, and an H(infinite) method and an interval matrix method are used on external disturbance and parameter nondeterminacy respectively in the design process; and an attitude system error fault model is obtained on the basis of the fault model, a dynamic output feedback fault tolerance controller is designed on the basis of a fault estimated value, and fault tolerance control of the quad-rotor UAV is realized. Influence of the performer fault on performance of the quad-rotor UAV can overcome, and the safety and reliability of the UAV in the flight process are ensured fully.
Owner:CENT SOUTH UNIV

Time-resolved single-photon counting two-dimensional imaging system and method

The invention provides a time-resolved single-photon counting two-dimensional imaging system and a time-resolved single-photon counting two-dimensional imaging method and belongs to the technical field of extremely-weak light detection. A trigger 2 is triggered to start sampling, centralized sampling is performed at t time intervals, and measurement and counting are performed if light comes at the intervals, so that time resolving of an extremely-weak light object is realized, and a time sequence image is generated. Imaging is performed on the basis of a compressive sensing (CS) theory, a digital micro-mirror device (DMD5) performs linear random projection on a compressible two-dimensional image, the compressible two-dimensional image is optically modulated and then synchronously detected by using a single-photon counter, and a high-resolution extremely-weak light image can be reconstructed by a small amount of sampling operation. The measurement process is linear and non-adaptive, the reconstruction process is non-linear, and the invention has the advantages of high generality, robustness, expandability, superposition and computation asymmetry, and can be widely applied to the fields of life science, medical imaging, data acquisition, communication, astronomy, military affairs, hyper-spectral imaging and quantum measurement.
Owner:NAT SPACE SCI CENT CAS

Sports training monitoring system

The invention discloses a sports training monitoring system. The sports training monitoring system comprises a video data collecting module, a vital sign collecting module, a motion state collecting module, a man-machine operating module, a data processing module, an action standard judging module, an instruction outputting module, a central processor, a three-dimensional model generating module and a physical state assessment module. According to the sports training monitoring system, video collecting is conducted by adopting panoramic video collecting, so that the video monitoring coverage is widened; the body and motion conditions of athletes are monitored through different sensors with Beidou modules, analogue simulation is conducted on monitored data through a three-dimensional model, and therefore a monitor can more comprehensively and accurately conduct monitoring and data analysis and assessment on the motion process; meanwhile, a physical condition assessment function, the standard action judging module and the instruction outputting module are achieved in the whole monitoring process, and therefore the training efficiency is greatly improved; in addition, three-dimensional putting of instructions can be conducted through the three-dimensional model generating module, and therefore convenience is brought to study of the athletes.
Owner:ZHENGZHOU UNIV OF IND TECH

Non-contact measurement method for thermal state sizes of forgings

ActiveCN101713640ARealize real-time non-contact measurementGuaranteed real-time effectivenessImage analysisMetal-working apparatusThermal stateCalibration result
The invention relates to a non-contact measurement method for thermal state sizes of forgings, in particular to a method for measuring the sizes of the forgings by using strip structured light, and belongs to the field of high-temperature forging size measurement,. The method comprises the following steps of: dividing the forgings into a square class and a cylindrical class, then calibrating internal and external parameters of a first CCD camera and a second CCD camera, and building a coordinate relation of the cameras and an external viewing field; projecting the strip structured light to the high-temperature forgings; acquiring images of the high-temperature forgings projected by the strip structured light by an image acquisition system; processing the acquired images; quickly extracting feature points of the associated forging size by analyzing shape characteristics of the edge of the structured light on the cylindrical and the square forgings; combining calibration results of the first CCD camera and the second CCD camera to carry out three-dimensional modeling on the feature points of the forgings; and calculating the forging size and partial form and position errors of the forgings. The method adopts the binocular vision technology to shoot the images of the high-temperature forgings in real time, is quick and accurate in measurement, and can meet the requirements of industrial forging and stamping production.
Owner:DALIAN UNIV OF TECH

Systematic control method for repair based on condition of electricity transmission equipment

The invention discloses a systematic control method for repair based on condition of electricity transmission equipment, which divides the repair based on condition of an electricity transmission system into two steps, i.e. the collection of the electricity transmission equipment information and the formulation of a strategy for systematic repair based on condition, wherein the collection of the electricity transmission equipment information comprises the collection of the equipment condition information and the collection of the operating information of the electricity transmission system; and the formulation of the strategy for systematic repair based on condition comprises the following steps: firstly, forming a basic database of the repair strategy, solving by adopting the control algorithm of a repair based on condition system, and checking and outputting to obtain an optimum repair arrangement strategy. The method provided by the invention can reduce the blindness in the repair course, avoids the insufficient repair, comprehensively balances the purposes of enhancing the service life of the equipment and improving the reliability of the system in the repair period, arranges the time interval and type of the repair of the electricity transmission equipment from the point of maximum integral benefit of the system, and enhances the economy and reliability of the repair arrangement of the system.
Owner:XI AN JIAOTONG UNIV

Full-automatic feeding device of punching machine

The invention belongs to the technical field of punching machines, and relates to a full-automatic feeding device of a punching machine. The full-automatic feeding device comprises a loading table and a feeding mechanism, wherein the loading table and the feeding mechanism are controlled by a controller to act. The loading table is specifically and structurally characterized in that a rotary table is fixed on a rotating shaft which is driven by a power unit and arranged on a rack; more than two positioning groove sets are evenly distributed in the same circles in the rotary table, wherein the radii of the circles are the same, and the circles are drawn around the same center; each positioning groove set is formed by two arc grooves which are arranged in a spaced mode; a positioning rod is arranged in each arc groove; a positioning rod positioning device is arranged on the lower side of the rotary table; a material position is formed between the two positioning rods of each arc groove set; a hole or groove used for an ejector bar to penetrate through is formed in each material position; the ejector bar driven by the power unit to act is arranged on the lower side of the hole or groove. The full-automatic feeding device of the punching machine has the advantages that materials are convenient to pile, take and feed, the degree of automation is high, and the full-automatic feeding device is applicable to the punching machine.
Owner:林爱福

Method for inpainting and restoring processing of vacancy of DIBR (Depth Image Based Rendering) target image

InactiveCN103369342AGuaranteed correct disseminationSalient parameter featuresSteroscopic systems3D-image renderingDistortionDislocation
The invention provides a method for the inpainting and restoring processing of a vacancy of a DIBR (Depth Image Based Rendering) target image. A special vacancy inpainting and restoring mode with a plurality of times of local restoring is applied to the large vacancy taking the adjacent non-null pixel points as the background pixel points on at least one side of the left side and the right side; in each process of local restoring, priority contrast is applied to ensuring that a selected to-be-restored block has more obvious parameter characteristics on the aspects of background pixel distribution, gradient, depth distribution, and the like; and when the relevance of the RGB (Red, Green, Blue) value with the depth value of the pixel, which is measured through the matching coefficient based on an SSD (Solid State Disk) principle, is used for searching a matched block, the searching targeting is strong, the matching accuracy is high, the profile of a foreground object can be better kept, the phenomena of pseudomorphism overlapping and distortion on the edge of the foreground object can be prevented, the accurate transmission of the vacancy inpainting and restoring texture is ensured, and the restoration defects such as the dislocation, the disconnection, and the texture disorder, which are not in line with the visual psychology, between the vacancy inpainting and restoring area and a background image are greatly reduced.
Owner:CHONGQING UNIV

MiRNA145-5p-modified umbilical cord mesenchymal stem cell exosome and preparation and application of miRNA145-5p-modified umbilical cord mesenchymal stem cell exosome

The invention belongs to the technical field of biology and particularly relates to a miRNA145-5p-modified umbilical cord mesenchymal stem cell exosome and preparation and application of the miRNA145-5p-modified umbilical cord mesenchymal stem cell exosome. The invention provides a preparation method of the highly-miRNA145-5p-expressed umsc-exosome (umbilical cord mesenchymal stem cell exosome) and application of various biological preparations for accelerating full-thickness skin defect healing and antagonizing scar contracture. The preparation method of the exosome includes (1), adopting fresh umbilical cords to culture human umbilical cord mesenchymal stem cells; (2) preparing mesenchymal stem cells highly expressed in miRNA145-5p; (3), storing conditional media; (4) performing exosome extraction and purification. The highly-miRNA145-5p-expressed umbilical cord mesenchymal stem cell exosome is transferred into a full-thickness wound model of rat backs by serving as a biological preparation, so that skin granulation tissue proliferation can be promoted effectively, wound healing is accelerated and scar contracture can be antagonized; novel approaches and novel methods are provided for wound treatment.
Owner:SECOND MILITARY MEDICAL UNIV OF THE PEOPLES LIBERATION ARMY
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