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36results about How to "Get comprehensive information" patented technology

Honeycomb core surface shape measuring device

The invention discloses a honeycomb core surface shape measuring device, which comprises a laser measuring sensor, a measurement motion system, a reflecting film vacuum absorbing system, a reflecting film laying system, a motion control system for controlling the measurement motion system, and a data processing system for processing data of the laser measuring sensor, wherein the reflecting film laying system coats a reflecting film on a surface to be measured of a honeycomb core, the reflecting film vacuum absorbing system performs vacuum adsorption on the reflecting film so that the reflecting film is closely adhered to the surface to be measured of the honeycomb core, and the reflecting film at honeycomb hole lattices is recessed downwards; and the laser measuring sensor installed in the measurement motion system is controlled by the motion control system for scanning the honeycomb core three-dimensionally so as to obtain honeycomb wall heights of the honeycomb core at different spatial positions, and acquiring a surface shape of the honeycomb core by means of the data processing system. By adopting the method of coating the reflecting film on the surface of the honeycomb core, the honeycomb core surface shape measuring device solves the problem that the surface shape is difficult to measure due to discontinuous characteristic of porous thin walls of the honeycomb core.
Owner:DALIAN UNIV OF TECH

Device and method for observing micro-droplets

The invention relates to a device for observing micro-droplets. The device comprises a micro-fluidic chip, a flickering light source and an image acquisition module, wherein the micro-fluidic chip is provided with microchannels containing cyclically moving micro-droplets; the flickering light source generates flickering light with preset flickering parameters according to a control signal provided by a flickering light source control module; the image acquisition module acquires images of the micro-droplets irradiated by the flickering light and located in the microchannles of the micro-fluidic chip. The flickering light source is controlled by the flickering light source control module to generate flickering light with specific frequency and irradiates the micro-fluidic chip; then, the image acquisition module acquires the images on the micro-fluidic chip; information about sizes, shapes, flux and the like of the micro-droplets can be obtained according to the images and the frequency of the flickering light. Compared with methods using conventional high-speed cameras, phototubes and the like, the device has the advantages that comprehensive information is acquired conveniently and the device is low in cost and easy to establish and can be widely applied to a small micro-fluidic system.
Owner:SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI

Multi-channel network video stream license plate recognition method and system

Embodiments of the present invention disclose a multi-channel network video stream license plate recognition method and system. The license plate recognition method is applied to a monitoring system,and comprises: an acquisition and decoding step: collecting network video streams distributed by multiple IP cameras, and decoding the network video streams in real time; a concurrent processing step:using a multi-thread concurrent processing mode to sequentially perform license plate detection, character segmentation and character recognition on image frame data; and a display and analysis step:rendering and displaying the license plate number data and the image frame data in real time, receiving user interaction information at the same time to control the rendering and displaying, displaying, distributing, and collecting statistics of license plate number data, and saving the statistical results as log information. According to the embodiments of the present invention, the license plate image of the license plate area existing in the video is detected, and the deep learning technology is used to recognize the license plate image, so that the license plate number data in the video is obtained, the problems that the traditional method has poor tolerance and a slow speed are solved, and the technical scheme can be applied to the video stream information that the environment is complex and variable.
Owner:深圳市智绘科技有限公司

Transformer substation inspection robot obstacle detection and recognition method integrated with depth camera

The invention discloses a transformer substation inspection robot obstacle detection and recognition method integrated with a depth camera. The method comprises steps of using a depth camera for collecting data, preprocessing data, converting the depth map and the RGB color image into a point cloud image, eliminating ground point cloud in the point cloud image by using a defined ground plane model, then performing adaptive clustering on obstacles by using an adaptive density clustering algorithm, finally judging the types of the obstacles, and finally converting obstacle information into two-dimensional laser radar data information and sending the two-dimensional laser radar data information to a path planning algorithm. The calculated amount of the whole process is lower than that of an obstacle segmentation algorithm and an image segmentation obstacle algorithm using deep learning; meanwhile, due to the introduction of the depth camera, the transformer substation robot can easily obtain external three-dimensional information and color images, the perception capacity of the robot is greatly enhanced, and therefore the accuracy and stability of the obstacle avoidance function of the transformer substation inspection robot can be improved.
Owner:SOUTH CHINA UNIV OF TECH

Noncontact three-dimensional laser foot type measuring system and method

The invention discloses a noncontact three-dimensional laser foot type measuring system and method. The system comprises an object-carrying glass platform, a mechanical supporting module, an optical imaging module, a movement control module, a three-dimensional model building module, an automatic parameter measuring module and a 3D shoe tree designing module. A user only needs to place a measured foot on the object-carrying glass platform, then omnibearing three-dimensional data measuring can be completed through the optical imaging module, and high-density three-dimensional surface shape point cloud data are acquired; feature parameters of foot type are given through the automatic parameter measuring module, whether the foot type is malformed or not is judged according to the high-density three-dimensional surface shape point cloud data and the feature parameters, shoe tree designing is performed, and complete measuring of one foot type can be completed within ten seconds or more; noncontact laser measuring is adopted, and the user can perform measuring under a condition of easily stretching, so that deformation caused by contact is avoided effectively; the movement control module controls the optical imaging module to move back and forth for measuring, so that the acquired three-dimensional surface shape point cloud data are more omnibearing and higher in density.
Owner:深圳市精易迅科技有限公司

Secondary traffic accident prevention and control method in intelligent network connection mixed traffic flow environment

The invention provides a secondary traffic accident prevention and control method in an intelligent network connection hybrid traffic flow environment. And after the accident occurs, the traffic management center evaluates the accident influence and the upstream traffic state based on the real-time traffic flow data acquired by the camera. On the one hand, RSU equipment within the range of 2000 meters on the upstream of the accident section is controlled to release safety information, and downstream accident conditions are informed to a network connection vehicle in advance through vehicle-vehicle communication forwarding. On the other hand, variable signal identifiers at different sections and RSU equipment are controlled to issue variable speed limit control instructions together, upstream coming vehicles are guided to decelerate ahead of an upstream free flow section so as to reduce the risk of secondary accidents, and the traffic capacity of urban expressways is improved. The control instruction is not forwarded through vehicle-to-vehicle communication. The control model is optimized based on a deep reinforcement learning algorithm. Two indexes of safety and efficiency are considered when a reward function is set, and a penalty factor is set to guide the model to learn a simpler and more reasonable control strategy. The model is optimized by adopting an actor reviewer framework.
Owner:SOUTHEAST UNIV

Metabonomics technology-based persistent organic pollutant cytotoxicity action mechanism research method

The present invention discloses a metabonomics technology-based persistent organic pollutant cytotoxicity action mechanism research method. According to the method, HepG2 cells are exposed to organicpollutants, the intracellular and extracellular culture liquid metabolites can be effectively analyzed by using UHPLC / Q-Trap MS, the influence of the organic pollutants on the cell metabolism pathwaycan be intuitively reflected by combining statistical analysis and metabolic pathway analysis, and by using a biological detection method, the activity of rate-limiting enzyme related to the metabolicpathway is further rapidly analyzed. According to the present invention, the organic pollutant cytotoxicity action mechanism is clarified according to the intracellular metabolite content change andthe activity change of the rate-limiting enzyme in the metabolic pathway, and the pollutant toxicity action mechanism evaluation method is constructed based on molecular biology, and the metabonomicstechnology-based persistent organic pollutant cytotoxicity action mechanism research method has advantages of easy operation, rapid detection, high sensitivity, strong selectivity, good repeatability,comprehensive information acquisition and the like.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI

Intelligent operation safety monitoring system for elevators

The invention relates to an intelligent operation safety monitoring system for elevators. The intelligent operation safety monitoring system is composed of elevator monitoring devices, an intelligentelevator diagnosis and monitoring center and an emergency processing and response module. Each elevator monitoring device comprises a Zigbee communication module, a human body sensor, a sensor unit, an information display module, a storage module, a speaker, a photoelectric detector, a microprocessor, a Hall switch, an alarm device and a power source. The intelligent elevator diagnosis and monitoring center comprises a wireless gateway, a central monitor, a fault diagnosis device, an on-duty personnel director, an overhauling personnel director and an alarming device. The emergency processingand response module comprises a public security mobile phone terminal, a public security center telephone terminal, an intelligent elevator diagnosis and monitoring center telephone terminal, an urbanemergency center telephone terminal and a fire-fighting partial rescue telephone terminal. By the adoption of the intelligent operation safety monitoring system, the comprehensive information of eachelevator can be obtained, the real-time performance is good, and the fault diagnosis function is provided; and when an abnormality occurs, on-duty personnel and maintenance personnel can be notifiedin time, and emergency measures can be taken quickly.
Owner:南安市中研中医药有限公司

Detection method and application of metabolic profile of bile acid pathway based on serum samples

The invention discloses a method for detecting the metabolic profile of bile acid pathways based on serum samples, comprising: preparing samples; using ultra-high performance liquid chromatography tandem time-of-flight mass spectrometry to deduce and identify bile acids in serum samples, and if there are standard products, use the standard products Confirm the retention time of the primary mass spectrometry quasi-molecular ion and the accurate mass-to-charge ratio of the characteristic secondary fragment ion; if there is no standard, according to the cracking law and chromatographic characteristics of the same type of bile acid, combined with the primary and secondary mass spectrometry in serum Identify the data and chromatographic behavior; use ultra-high performance liquid chromatography in series triple quadrupole mass spectrometry to quantitatively analyze bile acids, cholesterol and hydroxysterols. If there are standards, optimize the appropriate detection conditions through standards; Based on the qualitative first-order and second-order mass spectrometry data of ultra-high performance liquid chromatography tandem time-of-flight mass spectrometry, the characteristic product ions are optimized, the cone voltage and collision energy are optimized, and quantitative analysis is realized; the metabolic profile of the whole bile acid pathway is obtained.
Owner:NANJING QLIFE MEDICAL TESTING LAB CO LTD

Prevention and control method of secondary traffic accidents under intelligent network mixed traffic flow environment

The invention proposes a secondary traffic accident prevention and control method in an intelligent network-connected mixed traffic flow environment. After the accident, the traffic management center evaluates the impact of the accident and the upstream traffic status based on the real-time traffic flow data obtained by the camera. On the one hand, it controls the RSU equipment within 2,000 meters upstream of the accident section to release safety information, and forwards it through vehicle-to-vehicle communication to inform the connected vehicles of the downstream accident situation in advance. On the other hand, the variable signal signs at different sections are controlled to issue variable speed limit control instructions together with the RSU equipment to guide the upstream vehicles to decelerate earlier than the upstream free flow section to reduce the risk of secondary accidents and improve the capacity of urban expressways. . Control commands are not forwarded through vehicle-to-vehicle communication. The invention optimizes the control model based on the deep reinforcement learning algorithm. When setting the reward function, two indicators of safety and efficiency are taken into account, and a penalty factor is set to guide the model to learn a more concise and reasonable control strategy. The model is optimized using the actor-critic framework.
Owner:SOUTHEAST UNIV

A device and method for observing micro-droplets

The invention relates to a device for observing microdroplets, which includes: a microfluidic chip, which has a microchannel containing periodically moving microdroplets; a flashing light source, which is generated according to a control signal provided by a flashing light source control module. flickering light with preset flickering parameters; and an image acquisition module, which collects images of micro-droplets in the micro-channel of the microfluidic chip irradiated by the scintillation light. In the present invention, the flickering light source is controlled by the flickering light source control module to generate flickering light of a specific frequency, and irradiates the microfluidic chip; then the image acquisition module collects the images on the microfluidic chip; the microfluidic liquid can be obtained through these images and the frequency of the flickering light. Droplet size, shape and flux and other information. Compared with traditional methods such as high-speed cameras and photoelectric tubes, the present invention has the advantages of comprehensive information acquisition, convenience, low cost, and easy construction, and can be widely used in miniaturized microfluidic systems.
Owner:SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI

Multi-channel network video stream license plate recognition method and system

The embodiment of the present invention discloses a multi-channel network video stream license plate recognition method and system. The license plate recognition method is applied to a monitoring system and includes: a collection and decoding step: collecting network video streams distributed by multiple IP cameras, and decoding in real time ; Concurrent processing step: use multi-threaded concurrent processing mode to sequentially perform license plate detection, character segmentation and character recognition on image frame data; display analysis step: perform real-time rendering and display on license plate number data and image frame data, and receive user interaction information at the same time Control the rendering display, and display, distribute, and count the license plate number data, and save the statistical results as log information. The embodiment of the present invention detects the license plate image of the license plate area existing in the video, and uses deep learning technology to identify the license plate image, and obtains the license plate number data in the video, which solves the problems of poor error tolerance and slow speed of the traditional method, and can be applied Based on the complex and changeable video stream information in the environment.
Owner:深圳市智绘科技有限公司

A Honeycomb Core Surface Shape Measuring Device

The invention discloses a honeycomb core surface shape measuring device, which comprises a laser measuring sensor, a measurement motion system, a reflecting film vacuum absorbing system, a reflecting film laying system, a motion control system for controlling the measurement motion system, and a data processing system for processing data of the laser measuring sensor, wherein the reflecting film laying system coats a reflecting film on a surface to be measured of a honeycomb core, the reflecting film vacuum absorbing system performs vacuum adsorption on the reflecting film so that the reflecting film is closely adhered to the surface to be measured of the honeycomb core, and the reflecting film at honeycomb hole lattices is recessed downwards; and the laser measuring sensor installed in the measurement motion system is controlled by the motion control system for scanning the honeycomb core three-dimensionally so as to obtain honeycomb wall heights of the honeycomb core at different spatial positions, and acquiring a surface shape of the honeycomb core by means of the data processing system. By adopting the method of coating the reflecting film on the surface of the honeycomb core, the honeycomb core surface shape measuring device solves the problem that the surface shape is difficult to measure due to discontinuous characteristic of porous thin walls of the honeycomb core.
Owner:DALIAN UNIV OF TECH
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