Patents
Literature
Patsnap Eureka AI that helps you search prior art, draft patents, and assess FTO risks, powered by patent and scientific literature data.

888 results about "High radiation" patented technology

Nuclear power plant equipment inspection data transmission management method and system

The invention relates to the technical field of nuclear power plant equipment inspection and data transmission management, and provides a nuclear power plant equipment inspection data transmission management method and system. According to an existing nuclear power plant equipment inspection system, reliable transmission and intelligent processing of data are difficult to achieve in complex high-radiation, high-humidity and strong-electromagnetic-interference environments, the data are prone to interference in the inspection process, and the fault detection precision is insufficient. The device state information is dynamically collected in real time through the multi-modal data collection technology, the sampling frequency is adjusted according to the environment change through the fuzzy logic control algorithm, and the timeliness and accuracy of data are improved. After data preprocessing, high-dimensional fusion and feature extraction of multi-modal data are realized through a Bayesian network and a deep neural network (DNN). The system realizes intelligent inspection and data transmission management of nuclear power plant equipment in a high-interference environment, has high reliability and real-time adaptability, and can be widely applied to an intelligent safety inspection system of a nuclear power plant.
Owner:SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE CO LTD +1

Nuclear industrial robot body intelligent system based on large model

The invention discloses a nuclear industrial robot body intelligent system based on a large model, which realizes autonomous sensing, decision making and execution of a robot in a nuclear industrial environment by integrating a sensing module, a learning model module, an execution module, a communication module and a security module. The sensing module adopts a multi-sensor fusion technology to collect environmental data such as temperature, radiation intensity and gas concentration in real time; the decision-making module dynamically generates a task execution strategy based on an open source large model base in combination with deep learning and reinforcement learning algorithms; the execution module completes complex tasks such as equipment maintenance, fault processing and nuclear waste carrying through a high-precision mechanical arm and a force feedback control technology; the communication module supports data interaction between the robot and a control center, and remote monitoring and emergency intervention are achieved; the safety module monitors the state of the robot in real time, multiple safety protection mechanisms are provided, and stable operation of the robot in the high-radiation environment is ensured. According to the invention, the operation efficiency and safety of nuclear industry facilities are obviously improved.
Owner:BEIJING UNIV OF TECH

High-integration-level matrix type magnetic sensing chip structure, circuit and manufacturing method

The invention discloses a high-integration-level matrix type magnetic sensing chip structure and circuit and a manufacturing method thereof, and belongs to the technical field of semiconductor devices, the chip structure comprises a plurality of matrix elements, a switch matrix and a rear-end interface circuit, and each matrix element comprises a cross-shaped horizontal Hall element and a switch device; the switch matrix is composed of switch devices in matrix elements; the cross-shaped horizontal Hall element matrix is an N * M Hall matrix element formed by an integrated 1 * M Hall element matrix in each row; according to the invention, the structure and the circuit of the matrix type magnetic sensing chip which can be used for statically and dynamically measuring multi-dimensional magnetic field distribution in real time in severe environments such as high temperature, high pressure and high radiation are innovated and manufactured; dynamic and static measurement in a multi-dimensional magnetic field space can be achieved, error compensation is carried out through a circuit, it is ensured that the chip can stably work in the high-temperature, high-pressure and high-radiation environment, and it can be ensured that the chip has high linearity, sensitivity and accuracy.
Owner:DALIAN UNIV OF TECH

Artificial intelligence assisted intraoperative imaging method and system and storage medium

The invention relates to the technical field of medical image processing, in particular to an artificial intelligence assisted intraoperative imaging method, which comprises the following steps: S1, preprocessing a multi-modal medical image, segmenting and recognizing an anatomical structure by a deep learning model according to the preprocessed image, measuring anatomical parameters based on a segmentation and recognition result, and generating an operation planning path by artificial intelligence according to the anatomical parameters; s2, collecting a C-shaped arm perspective image stream in real time, dynamically tracking space coordinates of a surgical instrument, comparing the position of the instrument with a surgical planned path, calculating offset, and when the offset is greater than an offset threshold, outputting correction guidance through an AR superposition layer; and S3, monitoring an image quality index in real time, dynamically adjusting exposure parameters through a reinforcement learning model, and when a metal implant is detected, switching a dual-energy-spectrum mode and executing an artifact suppression algorithm. According to the method, preoperative precise planning and intraoperative assistance are realized through artificial intelligence, the problems of poor image quality and high radiation risk are solved through technical optimization, and the method has important clinical application value.
Owner:SHANGHAI DROIDSURG MEDICAL CO LTD +1

Hollow glass bead as well as preparation method and application thereof

The invention relates to the technical field of thermal insulation materials, and discloses a hollow glass bead as well as a preparation method and application thereof. The hollow glass beads are prepared from the following components in percentage by weight: 40 to 65 percent of silicon dioxide, 5 to 15 percent of boron oxide, 5 to 15 percent of sodium oxide, 2 to 8 percent of cuprous oxide, 1 to 5 percent of barium oxide, 2 to 10 percent of chromic oxide, 3.5 to 7.5 percent of nickel oxide, 1.5 to 3 percent of tin oxide and 1 to 5.5 percent of silicon carbide. Cuprous oxide, barium oxide and chromic oxide have high reflection coefficients, and heat absorption of buildings can be reduced; nickel oxide, tin oxide and silicon carbide have high radiation coefficients, heat can be dissipated into outdoor air in an infrared radiation mode, and therefore the temperature of the outer surface of a building is reduced. Cuprous oxide can significantly improve the surface cleanliness of the coating and enhance the thermal insulation performance of the coating.
Owner:QINHUANGDAO GLASS IND RES & DESIGN INST +1

Passive radiation refrigeration coating and preparation method thereof

The invention discloses a passive radiation refrigeration coating and a preparation method thereof, and relates to the technical field of industrial coatings. Comprising a fluoroacrylate emulsion, hollow glass beads, nano titanium dioxide, flaky silicon dioxide aerogel powder, polytetrafluoroethylene micro powder, hydroxyl-terminated polydimethylsiloxane, a hydroxyl acrylic acid modified silane coupling agent, a super-hydrophobic modified fluorosilicone surface additive, nano cerium oxide, aluminum fluoride doped zinc oxide infrared enhancement powder and deionized water. The paint is prepared on the basis of the formula. According to the invention, a multi-scale spectrum regulation and control and surface self-cleaning system is constructed cooperatively, so that the synergistic effect of high reflection of a sunlight region and high emission of a middle infrared region is realized. The coating can maintain continuous passive refrigeration in a day and night period, the surface of the coating has self-cleaning capability and excellent ultraviolet aging resistance, and high reflectivity and high radiation emissivity can be maintained for a long time in a complex outdoor environment, so that the thermal management efficiency of buildings and equipment is remarkably improved.
Owner:STATE GRID SHANGHAI MUNICIPAL ELECTRIC POWER CO

Ultra-wideband frequency reconfigurable tight coupling dipole array with wide beam scanning

The invention relates to an ultra-wideband frequency reconfigurable tight coupling dipole array with wide beam scanning. The ultra-wideband frequency reconfigurable tight coupling dipole array comprises a plurality of antenna units, the antenna unit comprises a tight coupling dipole radiation unit, a reconfigurable layer, a wide-angle impedance matching structure, a feed structure and a metal floor; the wide-angle impedance matching structure, the tight coupling dipole radiation unit and the feed structure are sequentially located on the first dielectric plate from top to bottom, and the first dielectric plate is placed perpendicular to the horizontal plane. The reconfigurable layer, the metal floor and the first dielectric plate are vertically arranged in an intersecting mode, and the reconfigurable layer is located above the metal floor. The reconfigurable layer and the double-layer double-sided capacitor loading ring structure are used for achieving the frequency reconfigurable function of the ultra-wideband array, and meanwhile the high radiation efficiency and the large-angle scanning capacity of the ultra-wideband array are effectively guaranteed. In addition, the invention also designs a feed structure containing a capacitor loading short-circuit pin, so that no common-mode resonance in the working frequency band of the ultra wide band is ensured.
Owner:XIDIAN UNIV

Simulation control system for discharge processing in high-radiation boron-containing water environment of nuclear power plant

The invention particularly relates to a discharge machining simulation control system for a nuclear power plant in a high-radiation boron-containing water environment, which belongs to the technical field of special maintenance in the high-radiation environment of the nuclear power plant and comprises a man-machine interaction system, a discharge machining control system and subsystems. Each subsystem comprises a pulse power supply system, a servo power system, a washing system, a purification system, a grounding system and a tool system; the man-machine interaction system is used for man-machine interaction and displaying the discharge machining implementation data fed back by the subsystems; the electric discharge machining control system is used for generating an electric discharge machining instruction according to the man-machine interaction information and controlling the subsystems to cooperate to perform electric discharge machining work; and each subsystem is used for implementing electric discharge machining work according to the electric discharge machining instruction and feeding back electric discharge machining implementation data. According to the invention, simulation control of discharge processing in the high-radiation boron-containing water environment of the nuclear power plant is realized.
Owner:CNNC NUCLEAR POWER OPERATION MANAGEMENT CO LTD

Ultra-wideband miniaturized Vivaldi antenna

The invention belongs to the technical field of communication, and particularly relates to an ultra-wideband miniaturized Vivaldi antenna. The antenna comprises a dielectric substrate, wherein the upper surface of the dielectric substrate comprises a main body Vivaldi antenna, four resistors, two rectangular metal patches and an artificial surface plasma, wherein the main body Vivaldi antenna is provided with an exponential gradually-changed slot; a feed network is arranged on the lower surface and comprises six impedance conversion microstrip transmission lines, a fan-shaped transmission line and a circular groove; the main body antenna and the dielectric substrate are placed in a centered alignment manner, the four resistors are placed at the tail end of the main body antenna, and the rear sides of the resistors are connected with the two rectangular patches; the artificial surface plasma is placed in the main body antenna gradual change gap; and the multi-section impedance transformer and the microstrip-to-slot line structure of the feed network are aligned with the circular slot of the main body antenna. According to the invention, the ultra wide band, miniaturization and high radiation gain are realized by designing the main body antenna, slotting the edge, loading the resistor, carrying out the artificial surface plasma and the like. The working frequency band of the antenna ranges from 0.2 GHz to 18 GHz, and the antenna has the characteristic of miniaturization.
Owner:FUDAN UNIVERSITY

Radiation source individual identification method, system and equipment based on space-time information separation

The invention discloses a radiation source individual identification method, system and device based on space-time information separation, and relates to the field of radiation source individual identification, and the method comprises the steps: obtaining a to-be-detected time domain electromagnetic signal; inputting a to-be-detected time domain electromagnetic signal into the trained radiation source individual identification model to obtain a radiation source individual, and completing the identification of the radiation source individual; the radiation source individual identification model comprises a signal preprocessing and feature enhancement module, a multi-scale spatial feature coding module, a time sequence dynamic modeling module and a space-time cross attention fusion module which are connected in sequence; a loss function for training of the radiation source individual identification model adds triple loss on the basis of standard cross entropy loss. According to the invention, the accuracy and the recognition efficiency of radiation source individual recognition can be improved.
Owner:NAVAL AVIATION UNIV

Scoliosis screening method and system

The invention provides a scoliosis screening method and system, and relates to the technical field of medical artificial intelligence, human body image data on a low-light detection garment worn by a patient is collected, the human body image data is preprocessed and sent to an SSD module, the SSD module is used for predicting the position of a low-light light source, and a scoliosis detection result is obtained. The key point detection module is used for detecting human body scoliosis, high-precision detection frame information in the detection result is used as a basis, a human body posture result predicted by the key point detection module is restrained and corrected, then human body scoliosis grading is performed, a human body scoliosis detection result is displayed and fed back to a patient, high-precision detection of scoliosis is achieved, and the system has the advantages of high efficiency, non-invasiveness and light weight; the scoliosis early detection rate and grading intervention precision can be remarkably improved, and the problems that traditional medical diagnosis is low in efficiency, large in radiation risk, insufficient in precision and difficult to operate on embedded equipment with limited resources are solved.
Owner:NANCHANG UNIV

Linear polarization scattering reconfigurable array antenna

The invention discloses a linear polarization scattering reconfigurable array antenna, which belongs to the technical field of antenna manufacturing and comprises an antenna unit, an extension socket, a transmission type phase shifter and an inductor. The antenna unit comprises a radiation patch, a first dielectric substrate, a metal via hole, a metal patch, a second dielectric substrate, a perforated metal floor, a third dielectric substrate, a feed metal column and a radio frequency coaxial connector, the radio frequency coaxial connector is connected with the radiation patch through the feed metal column, and a variable capacitance diode and a capacitor are arranged on the transmission type phase shifter. The transmission type phase shifter is connected with the radiation patch through the feed metal column, the variable capacitance diode is connected with the punching metal floor, the bottom of the third dielectric substrate is provided with a direct current bias line, the direct current bias line is connected with the transmission type phase shifter through the inductor, and the transmission type phase shifter is connected with the radiation patch through the feed metal column. According to the invention, flexible regulation and control of antenna scattering beams can be realized, and the antenna has the characteristics of flexible control, fast response speed and high radiation efficiency.
Owner:CHENGDU RDW TECH CO LTD +1

Dual-frequency common-caliber antenna structure and antenna array

The utility model provides a dual-frequency common-aperture antenna structure and an antenna array, and relates to the technical field of microwave communication. Through the combination of the high-frequency side-fire structure and the low-frequency end-fire structure, the problem of high and low-frequency crosstalk is effectively solved, a filtering branch knot or a filter does not need to be additionally arranged, and it is ensured that the corresponding common-caliber antenna structure has the broadband characteristic and high radiation efficiency; meanwhile, the low-frequency end-fire structure is slotted on the high-frequency side-fire structure adopting a multilayer circuit board lamination design, so that the low-frequency end-fire structure can realize an accurate alignment effect and an efficient assembly welding effect on the high-frequency side-fire structure based on a slot position; the assembling efficiency, the product qualification rate, the antenna integration degree and the product reliability of the common-caliber antenna structure are further improved.
Owner:CHENGDU SHIDAI SUXIN TECH CO LTD

Method and system for monitoring electromagnetic radiation of electric vehicle

The invention belongs to the field of electric vehicle detection, and provides an electric vehicle electromagnetic radiation monitoring method and system, and the method comprises the steps: arranging electromagnetic radiation sensing nodes at a plurality of preset positions inside and outside an electric vehicle; establishing a multi-source input electromagnetic cognitive modeling system, and generating an atlas model for describing an electromagnetic radiation distribution evolution rule; constructing a coupling model among a plurality of electromagnetic source modules in the electric vehicle in the electromagnetic cognitive modeling system, and introducing an induced risk score as a correction factor into the atlas model; on the basis of the map model, predicting a high-radiation area possibly appearing under the current working condition of the electric vehicle, and determining the dynamic sampling priority of each sensing node; according to the sampling priority of each sensing node and a local real-time monitoring result, the sampling frequency is autonomously adjusted, and local enhanced sampling of a predicted high-risk area is realized through an inter-node cooperation mechanism.
Owner:四川省辐射环境管理监测中心站

Self-climbing module of specialized robot

The invention discloses a self-climbing module of a specialized robot. The self-climbing module comprises an irradiation-resistant shell, an adsorption device and a rope climbing device, a propeller device is mounted on the outer side wall of the radiation-resistant shell; the adsorption device comprises a gas control system and a suction cup assembly, the suction cup assembly is installed on the outer side wall, away from the propeller device, of the irradiation-resistant shell, the gas control system is installed in the irradiation-resistant shell, and the gas control system communicates with the suction cup assembly; the rope climbing device comprises a driving assembly, a positioning guide wheel set and a rope coiling winch. The driving assembly is installed in the irradiation-resistant shell, the rope coiling winch is installed at the output end of the driving assembly, and the positioning guide wheel set is rotationally connected into the irradiation-resistant shell. Wherein a traction rope is wound on the rope coiling winch and the positioning guide wheel group. The robot can realize high-precision climbing, positioning and hovering capabilities, can be stably adsorbed on the surface of a wall body in a high-radiation and high-risk environment, and provides efficient and reliable technical support for wall body repairing operation in a nuclear environment.
Owner:BEIJING UNIV OF TECH

Inclination angle adjusting method, device and equipment of flexible photovoltaic support and storage medium

The invention discloses an inclination angle adjusting method and device of a flexible photovoltaic support, equipment and a storage medium, and relates to the technical field of photovoltaics, and the method utilizes the characteristic that the inclination angle of a photovoltaic panel of the flexible photovoltaic support can be adjusted by winding and unwinding an upper string cable and a lower string cable. By analyzing the linear relationship between the lengths of the upper and lower string cables of the flexible photovoltaic bracket and the inclination angle of the photovoltaic panel, the relationship between the retraction length change behavior and the inclination angle change behavior is determined, and a quantitative basis is provided for subsequently adjusting the inclination angle according to the solar radiation distribution. A solar high-radiation habit area is defined according to extreme value distribution in solar radiation distribution, and the inclination angle is adjusted according to the distance between the photovoltaic panel and the center of the solar high-radiation habit area, so that the farther the photovoltaic panel is away from the radiation center, the larger the inclination angle is, and the panel surface of the photovoltaic panel can face the radiation center in a larger area. Therefore, the light receiving efficiency is improved. The invention provides an inclination angle adjusting mode which is unique in standard, can be quantified and is relatively accurate.
Owner:HUIZE HUADIAN DAOCHENG CLEAN ENERGY DEV CO LTD

A liquid-cooled radiator structure based on a diamond microfluidic channel and a manufacturing method thereof

The present invention discloses a liquid-cooled radiator structure based on a diamond microchannel, which includes a diamond substrate and a diamond epitaxial layer stacked. A plurality of diamond microchannels with a certain interval are arranged in the diamond substrate, and the diamond epitaxial layer is used to bond the object to be cooled on its surface. The present invention also discloses a manufacturing method of the radiator, which solves the problem that traditional heat sinks cannot be applied in extreme environments such as high temperature, high radiation, and strong corrosion.
Owner:XI AN JIAOTONG UNIV

Dual circularly polarized antenna, sub-array, one-dimensional phased array and planar phased array

The invention relates to the technical field of dual circularly polarized antennas, and discloses a dual circularly polarized antenna, a sub-array, a one-dimensional phased array and a planar phased array. The antenna comprises a direct dual-circularly-polarized radiation structure layer, a circularly-polarized electromagnetic metasurface coupling layer and a circularly-polarized electromagnetic metasurface parasitic layer which are sequentially stacked from bottom to top. The broadband wide-angle scanning dual-circularly polarized phased array provided by the invention has the advantages of low cost, low profile, high radiation efficiency, broadband, dual-circularly polarized wide-angle beam scanning and the like, and is suitable for advanced satellite internet communication and navigation application.
Owner:CHENGDU PINNACLE MICROWAVE CO LTD

Aerospace electromagnetic relay failure early warning and diagnosis method based on multi-physics field coupling

The invention discloses a spaceflight electromagnetic relay failure early warning and diagnosis method based on multi-physics field coupling, relates to the technical field of spacecraft electrical system reliability monitoring, and is used for solving the problems of lack of comprehensive consideration of multi-physics field coupling characteristics under spaceflight special working conditions and low interference resistance to complex environments. The method comprises the following steps: monitoring a network state, obtaining real-time data, calculating an optimal transmission strategy by using an intelligent regulation and control model, dynamically adjusting a coding mode, adaptively adjusting a transmission rate, further ensuring data integrity through an error code detection and error correction mechanism, and adjusting transmission parameters according to a real-time network condition in combination with packet optimization and flow priority management. Effective recognition and early warning of typical failure modes such as contact adhesion and coil burnout are achieved, and the failure early warning accuracy and diagnosis efficiency of the spaceflight electromagnetic relay in complex environments such as high radiation, extreme temperature and strong vibration are improved.
Owner:WENZHOU UNIV +1

Single event upset resistant reinforcement method based on Transform speech recognition model

ActiveCN119517015Aavoid wastingaccurate protectionSpeech recognitionEngineeringSpeech sound
The invention discloses an anti-single event upset reinforcement method based on a Transform speech recognition model, and the method is used for improving the speech recognition efficiency and accuracy of astronauts in a spaceflight task, and comprises the steps: constructing a training set, and carrying out the preprocessing of the data of the training set; the preprocessed training set is input into a Transform voice recognition model, and a trained Transform voice recognition model is obtained; parameters in the trained Transform speech recognition model are modified, a single event upset event and errors possibly occurring in a high-radiation environment are simulated, and an SEU influence model is established; and based on the SEU influence model, carrying out robustness analysis on the Transform speech recognition model, determining a sensitive module, and carrying out triple modular redundancy technology reinforcement on the sensitive module to obtain a single event upset resistant reinforced speech recognition model.
Owner:NAT SPACE SCI CENT CAS

Cadmium and lead heavy metal adsorption recombinant bacterium as well as construction method and application thereof

PendingCN119144537AVectorsBacteriaEscherichia coliDeinococcus
The invention provides cadmium and lead heavy metal adsorption recombinant bacteria as well as a construction method and application thereof. The method comprises the following steps: fusing an inner membrane positioning peptide fragment LPP-OmpA of Escherichia coli, and specific heavy metal binding protein PbBD and MTT5 of Cupriavidus metallidurans, and introducing a Deinococcus radiodurans R1 genome, so as to construct a new genetic engineering strain. The obtained strain has high radiation resistance, strong oxidation resistance and high heavy metal absorption capacity, and has application value in the aspect of reducing toxicity of heavy metals such as cadmium, lead and the like of crops in special areas with strong oxidation, high radiation and the like.
Owner:ZHEJIANG UNIV

Radiation information extraction method and device based on subatomic characteristics

The embodiment of the invention provides a radiation information extraction method and device based on subatomic characteristics, and the method comprises the steps: determining a remote sensing satellite image of an exploratory area, carrying out the preprocessing operation of the remote sensing satellite image of the exploratory area, determining a corresponding remote sensing satellite image of a target substance, and carrying out the development drying operation of the remote sensing satellite image of the target substance, determining a corresponding target substance exposure image negative film, performing filtering operation on a negative film image after printing operation according to a preset optical filter, determining a corresponding to-be-detected substance anomaly, and performing receiving operation on the to-be-detected substance anomaly according to a preset information carrier. And performing radiation operation on the information carrier subjected to the receiving operation according to the set sub-atomic field generator and the ultraviolet radiation source, determining the corresponding abnormal radiation image of the to-be-detected substance, and determining the corresponding radiation information of the to-be-detected substance according to the abnormal radiation image of the to-be-detected substance, so that the efficiency and the accuracy of radiation information extraction can be improved.
Owner:DEEP EXPLORATION (BEIJING) TECH CO LTD

Multi-threshold 16T anti-radiation SRAM (Static Random Access Memory) storage unit circuit and storage

The invention relates to a multi-threshold 16T anti-radiation SRAM (Static Random Access Memory) storage unit circuit and a memory, a storage module in the circuit is of a bistable structure formed by two cross-coupled phase inverters formed by PMOS (P-channel Metal Oxide Semiconductor) transistors, and two storage nodes are formed; the redundant storage module adopts NMOS (N-channel metal oxide semiconductor) transistors to form a bistable structure, and two redundant nodes are formed to serve as redundant backups of the storage module; when the read-write operation control module reads or writes data, a word line is activated, and the data is read from the storage node and the redundant node or written into the storage node and the redundant node through the switched-on transistor; and the bit line driving module is used for driving the bit lines during reading and writing operations. According to the circuit, by introducing redundant nodes and a feedback mechanism, efficient resistance and recovery of single-particle and multi-node upset are achieved, the anti-radiation capacity is improved, the static noise margin, the read-write speed and the power consumption performance are optimized, and the circuit is suitable for the reliable data storage requirement in the high-radiation environment.
Owner:ANHUI UNIV

All-fiber laser for improving photon darkening bleaching effect

The invention discloses an all-fiber laser capable of improving a photon darkening bleaching effect, which comprises a fiber laser oscillator, a bleaching light source and a bleaching light circulator, and is characterized in that the bleaching light source generates bleaching light and injects the bleaching light into a fiber laser resonant cavity to bleach a gain fiber. The bleaching light circulator is provided with a pumping energy transmission optical fiber closed loop, so that bleaching laser which is output by the optical fiber laser resonant cavity and is not completely absorbed can enter the optical fiber laser resonant cavity in a circulating and reciprocating mode, circulating bleaching of gain optical fibers is achieved, and therefore the light bleaching efficiency can be effectively improved; and the energy density of bleaching light in the gain fiber can be enhanced, and the anti-darkening performance and the working life of the fiber laser in a high-radiation environment can be obviously improved and prolonged.
Owner:NAT UNIV OF DEFENSE TECH

Plastic package material defect detection method and system in radiation environment based on machine vision

The invention relates to the technical field of image processing, and discloses a plastic package material defect detection method and system in a radiation environment based on machine vision. The method comprises the following steps: acquiring an anti-radiation image in a gamma-ray environment through a lead-tungsten alloy shielding high-radiation tolerance type image sensor, and performing adaptive contrast enhancement. Defect features including microcracks, bubbles, deformation and chromatic aberration are extracted by using dual-tree complex wavelet transform and an HSV color space; and inputting the multi-dimensional features into an AR-DCNN network to carry out multi-task learning, identifying defect types and carrying out scoring. Based on Weibull distribution and a random forest algorithm, the radiation-resistant life of the plastic package material is predicted, and a material degradation curve and safety threshold early warning are obtained. According to the invention, standardized processing of the radiation damage quantitative index is realized, and the prediction accuracy is effectively improved.
Owner:GUILIN UNIV OF ELECTRONIC TECH +1

Radiation intensity testing method for radioactive protection

The invention relates to the related technical field of radiation intensity testing, in particular to a radiation intensity testing method for radioactivity protection, and the method comprises the steps: collecting data, carrying out the two-dimensional fusion, and setting a dynamic radiation pattern; correcting space distortion, and identifying and marking hot spot coordinates; and generating a protection instruction according to a protection optimization engine, updating a weight coefficient, and establishing a mapping table and an early warning model to perform efficiency verification, thereby solving the technical problems that noise and space distortion are liable to occur in radiation detection due to environmental electromagnetic interference, the accuracy and effectiveness of radiation protection are limited, and the radioactivity protection efficiency is further influenced. The method achieves the correction of the space distortion of the dynamic radiation intensity distribution diagram, adapts to a complex and changeable radioactive environment, improves the pertinence and effectiveness of radiation protection measures, guarantees the accuracy of a radiation detection result, reduces the measurement error caused by environmental electromagnetic interference, verifies and optimizes the radioactive protection efficiency, and improves the accuracy of the radiation detection result. And the overall efficiency of radioactive protection is improved.
Owner:SHANDONG YUEZHENG ENG TESTING & APPRAISAL CO LTD

Millimeter wave array antenna with high radiation efficiency

The invention relates to a millimeter wave high-radiation-efficiency array antenna technology, in particular to a millimeter wave high-radiation-efficiency array antenna which sequentially comprises a radiation slot layer, a resonant coupling layer and a waveguide feed layer from top to bottom, the array antenna is composed of 16 * 16 antenna sub-arrays, and each antenna sub-array comprises 2 * 2 radiation slot units. The scale of the array antenna is 32 * 32 radiation slot units. The antenna array is compact in structure, wide in broadband and high in radiation efficiency.
Owner:CHINA ELECTRONICS TECH GRP NO 26 RES INST

Wide-beam metal frame mobile phone antenna

The invention discloses a wide-beam metal frame mobile phone antenna, which comprises a metal frame provided with a plurality of opening gaps and a plurality of short circuit columns, the metal frame is divided into a plurality of frame components to form monopole antennas, and at least parts of the monopole antennas are positioned on the same straight line. According to the wide-beam metal frame mobile phone antenna, the plurality of opening gaps are formed in the metal frame of the wide-beam metal frame mobile phone antenna, so that the plurality of monopole antennas are formed on the metal frame, the multi-element monopole antenna array is further formed, the beam width can be expanded, the radiation efficiency can be improved, and the effects of wide beam and high gain can be achieved; the metal frame serves as an outer frame of the intelligent terminal, can play a role in fixing and protecting the intelligent terminal, and also serves as a radiator of an antenna of the intelligent terminal, so that the radiation performance of the intelligent terminal is improved, extra space does not need to be occupied, and the compactness of the intelligent terminal is improved. The antenna can be widely applied to the technical field of terminal equipment antennas.
Owner:SUN YAT SEN UNIV

Multi-platform multi-label radiation source individual identification method, system, equipment, medium and product

The invention discloses a multi-platform multi-label radiation source individual identification method, system and device, a medium and a product, and relates to the technical field of target identification, and the method comprises the steps: building a label based on a radar platform and the number data of a target; obtaining a joint embedding vector based on the label and constructing a symmetric normalized adjacent matrix; acquiring sample radar data; using a deep residual network to obtain sample depth residual signal features based on the sample radar data; efficient features are obtained based on the sample depth residual signal features and the joint embedding vector; adopting a GCN network to obtain a classifier based on the efficient features and the symmetric normalized adjacency matrix; radiation source signal data in a set area are acquired, and depth residual signal features are obtained by using a depth residual network; obtaining a score vector based on the deep residual signal features and a classifier; and obtaining a radar platform number and a target number of the radiation source signal data based on the fractional vector. According to the invention, the identification speed and accuracy of the radiation source signal data can be improved.
Owner:NAVAL AVIATION UNIV

Nuclear power station pool foreign matter collecting and transferring device

The nuclear power station pool foreign matter collecting and transferring device comprises a shielding container and a collecting basket, the shielding container comprises a first containing cavity and is provided with shielding materials capable of shielding rays, and the collecting basket comprises a second containing cavity and can be arranged in the first containing cavity; and drainage structures are arranged on the collecting basket and the shielding container. According to the nuclear power station pool foreign matter collecting and transferring device, after the foreign matter is collected, the foreign matter does not need to be transferred underwater again, the collecting basket can be placed in the shielding container or the foreign matter is directly placed in the shielding container, and the shielding container can shield the foreign matter with high radiation dose; radiation of foreign matters to human bodies and the environment can be reduced, the operation risk of personnel is reduced, and use is simpler and more convenient; the shielding container and the collecting basket can be used in cooperation and can also be used independently, and on-site flexible use is facilitated; the arrangement of the drainage structure facilitates the discharge of radioactive residual water in the foreign matters, so as to reduce the foreign matter collection and transfer weight.
Owner:LIAONING HONGYANHE NUCLEAR POWER