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237results about How to "Increase redundancy" patented technology

Real estate surveying and mapping data processing method and system based on intelligent data

The invention relates to the technical field of data processing, in particular to a real estate surveying and mapping data processing method and system based on intelligent data. The method comprises the following steps: acquiring multi-source real estate surveying and mapping data; performing space-time synchronization on the multi-source real estate surveying and mapping data to generate multi-source real estate surveying and mapping space alignment data; real estate space feature extraction is carried out on the multi-source real estate surveying and mapping space alignment data to obtain real estate space feature data; performing cross-domain feature fusion on the multi-source real estate surveying and mapping data based on the real estate spatial feature data to generate real estate surveying and mapping fusion spatial feature data; public surveying and mapping point confirmation is carried out on the multi-source real estate surveying and mapping data through the real estate surveying and mapping fusion spatial feature data, and real estate surveying and mapping public surveying and mapping point data are obtained. Through multi-source data space-time synchronization, feature fusion, distortion correction, high-dimensional space reconstruction, semantic tag association and chain storage, the efficiency and accuracy of real estate surveying and mapping data processing are improved.
Owner:HEZE MUNICIPAL NATURAL RESOURCES & PLANNING BUREAU

Cooperative operation system and method for photovoltaic cleaning robot and carrying robot

The invention discloses a collaborative operation system and method for a photovoltaic cleaning robot and a carrying robot, relates to the technical field of automatic control, and solves the defects that an existing collaborative operation system is unstable in communication and insufficient in emergency handling capacity. According to the invention, the environmental information of the photovoltaic power station is collected in real time through the environmental perception module, and the reliability of data transmission is ensured through an automatic retransmission request mechanism and error detection and correction codes based on 5G and LoRa communication protocols; communication parameters are adaptively adjusted through the communication self-adjusting module, so that the communication quality is ensured; the path planning module dynamically allocates cleaning tasks and plans an optimal path, the collaborative obstacle avoidance module dynamically adjusts the motion trails of the robots and avoids obstacles, the operation progress tracking module records the operation states of the robots in real time, and comprehensive operation progress information is provided through data processing and visual display. According to the invention, the communication stability, the autonomous decision-making capability and the operation efficiency of the system are obviously improved.
Owner:HENAN HUATUO ELECTRONIC TECH CO LTD

Imaging method and system based on cosmic ray muon transmission

The invention discloses an imaging method and system based on cosmic ray muon transmission, which are applied to a control mechanism, and the control mechanism is electrically connected with at least one detection module. The imaging method based on cosmic ray muon transmission comprises the steps that the response state of at least one detection module is obtained, the detection module comprises a plurality of sensor units, and the sensor units are arranged in a string shape. And preprocessing the response state to obtain muon flux in unit area, unit time and unit solid angle. Based on the topographic data, the landform data and the muon flux, the density distribution in the muon ray irradiation range is reversely deduced through a preset algorithm. And performing visual imaging based on a density distribution result. According to the method, the working efficiency of muon geological imaging is improved, the system complexity is reduced, the adaptability in a narrow working environment is remarkably enhanced, and an efficient and convenient solution is provided for the fields of geological exploration, engineering detection and the like.
Owner:SOUTHERN UNIVERSITY OF SCIENCE AND TECHNOLOGY

OFDM-IM-LDPC coding and decoding method based on combination number index

The invention discloses an OFDM-IM-LDPC (Orthogonal Frequency Division Multiplexing-Index-Low Density Parity Check) coding and decoding method based on a combination number index, and belongs to the field of According to the method, the symbol bit information and the index position obtained through calculation are independently coded, original direct coding of information source bits is replaced, the misjudgment rate of the index position is reduced, the accuracy of a subcarrier activation mode is improved, meanwhile, the index position is calculated through the combinatorial number method, the application range of the system is expanded, and the system reliability is improved. Meanwhile, resource waste caused by a preset lookup table is reduced, the implementation difficulty is lowered, and higher flexibility and expansibility are provided. According to the method, the high error correction performance of the LDPC code is utilized, the redundancy of bit information and index positions is increased, noise and attenuation in a channel are effectively resisted, and high precision of data decoding is achieved; according to the method, the log-likelihood ratio soft information is selected for decoding, and the robustness and the accuracy of signal demodulation recovery are improved while the judgment complexity is reduced by arranging the soft information in a descending order and dynamically adjusting an illegal subcarrier mode.
Owner:BEIJING INST OF TECH

Sucker system and semiconductor device processing equipment

The utility model discloses a sucking disc system and semiconductor device processing equipment, the sucking disc system comprises a sucking disc, the sucking disc is connected with a negative pressure generating pipeline, the negative pressure generating pipeline comprises a vacuum meter, and a first negative pressure generating pipeline and a second negative pressure generating pipeline which are connected in parallel, the first negative pressure generating pipeline generates negative pressure by a vacuum pump, and the second negative pressure generating pipeline generates negative pressure by a vacuum pump. The second negative pressure generating pipeline generates negative pressure through a vacuum generator. The suction cup is connected with the first negative pressure generation pipeline and the second negative pressure generation pipeline which are connected in parallel, the first negative pressure generation pipeline generates negative pressure through the vacuum pump, the second negative pressure generation pipeline generates negative pressure through the vacuum generator, and meanwhile the vacuum condition of the negative pressure generation pipelines is detected through the vacuum meter. When the vacuum generated by one negative pressure generation pipeline is unstable, compensation is carried out through the other negative pressure generation pipeline, the vacuum stability can be effectively improved, and the control redundancy is increased.
Owner:JIANGSU JCA ELECTRONICS TECH CO LTD

Seabed CO2 storage induced fault activation micro-seismic monitoring system and recognition method

The invention provides a seabed CO2 storage induced fault activation micro-seismic monitoring system and an identification method. The method comprises the following steps: acquiring a data signal in a seabed CO2 injection process; calculating the distance between the monitoring position and the seismic source based on the data signal to locate the seismic source position; obtaining a seismic source moment tensor and a moment magnitude based on the seismic source position, and obtaining a seismic source mechanism solution based on the seismic source moment tensor; taking the seismic source mechanism solution as a clustering parameter, performing spatial clustering analysis on all microseismic events in the seabed CO2 injection process, and obtaining a potential hidden fault corresponding to each cluster; and for all micro-seismic events on each potential hidden fault, magnitude-frequency number linear fitting is carried out based on the moment magnitude, an earthquake b value of seismic activity on the fault surface is obtained, and fault activation is identified based on the earthquake b value. According to the invention, real-time monitoring of the fault state in seabed CO2 geological sequestration can be realized, and possible fault activation can be identified.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1

Distributed K-H-V type involute small tooth difference joint module

The invention discloses a distributed K-H-V type involute joint module with a small tooth difference. The distributed K-H-V type involute joint module is applied to a joint on a snakelike mechanical arm. The joint module is composed of three sets of rotary driving units, a rack, an inner gear and an outer gear, in the transmission process, the eccentric shaft rotates to drive the inner gear to output at the rotating speed, and then the outer gear translates. The three groups of rotary driving units are respectively mounted in through holes formed in the inner gear and the outer gear at equal intervals; the rotary driving unit is matched with a bearing, an outer gear and an inner gear through a small motor, so that the space utilization rate of the joint module is increased; and in addition, by reducing transmission links, the power loss of the joint module is reduced, so that the joint module has the characteristics of small size and high output efficiency on the basis of having the characteristics of high rigidity and large transmission ratio of involute small tooth difference planetary gear transmission.
Owner:BEIHANG UNIV

Hydrogen energy power system suitable for magnetic suspension railway vehicle

PendingCN119636820AReduce engineering construction costsMeet high power demandsElectric devicesElectric powerAir filterHydrogen fuel cell
The invention provides a hydrogen energy power system suitable for a magnetic suspension railway vehicle. The hydrogen energy power system comprises a hydrogen storage system, a hydrogen fuel cell system, a heat dissipation and cooling system, an air filter, a connector and an electronic control unit (ECU). The hydrogen storage system comprises a hydrogen storage control unit (HSU), the hydrogen fuel cell system comprises a power control unit (PCU), and the ECU is used for collecting and processing state information of each system and sending out a control instruction; the ECU is connected with the PCU and the HSU, and the ECU serves as a main control unit and is responsible for receiving an instruction from a vehicle or a train operator and coordinating work of the PCU and the HSU according to the current running state of the vehicle; and the ECU sends a power demand instruction to the PCU and sends a hydrogen supply instruction to the HSU so as to ensure that the fuel cell can output corresponding power according to needs. The engineering construction cost of the track in the project is reduced, the project construction time is saved, funds are saved, and the method is environment-friendly.
Owner:CRRC CHANGCHUN RAILWAY VEHICLES CO LTD

Robot 3D visual positioning error correction method and system based on deep learning

The invention provides a robot 3D visual positioning error correction method and system based on deep learning, and relates to the technical field of robot visual positioning, and the method comprises the steps: obtaining the initial position information of a robot in a three-dimensional space, extracting image features through a deep learning model, calculating a displacement error, comparing the displacement error with a distance threshold value, and executing the correction step. Through multi-sensor data fusion and dynamic target position adjustment, the positioning precision and reliability of the robot in a complex environment are optimized. The invention aims to improve the positioning accuracy of the robot in a three-dimensional space through deep learning and a multi-sensor fusion technology and reduce the positioning deviation caused by environment change and sensor errors, so that the more intelligent and autonomous robot navigation capability is realized.
Owner:SHENZHEN INSTITUTE OF INFORMATION TECHNOLOGY

Inspection robot obstacle avoidance algorithm based on imitation learning

The invention discloses an inspection robot obstacle avoidance algorithm based on imitation learning. The algorithm comprises sensor data acquisition, picture depth estimation, obstacle detection, multi-modal data fusion and action sequence generation. In the model generated by the action sequence, task actions are divided by adopting an action partitioning technology; the action blocking technology comprises the steps that the size of an action block is set to be k, every k time steps, an action sequence generation model receives a set of multi-modal data, k actions are generated, and the actions are executed in sequence. According to the invention, through multi-modal input data and a generation model, autonomous inspection and obstacle avoidance of the robot can be completed under the conditions of a complex external environment and a dynamic obstacle.
Owner:SHANGHAI JIAOTONG UNIV

Control method for avoiding equipment maloperation caused by faults of controller or clamping piece

The invention relates to the field of industrial automatic control, in particular to a control method for avoiding equipment maloperation caused by faults of a controller or a clamping piece. The control method comprises the steps that in the controller, self negation is carried out on a closing instruction obtained through front logic calculation, and the closing instruction serves as an opening instruction; performing double-0 or double-1 judgment by taking the two instructions as intermediate variables, and finally outputting a switch instruction by an output function block when no double-0 or double-1 fault is confirmed; if it is judged that the double-0 or double-1 fault phenomenon exists, the output function block outputs a normal value of the last moment as a final switching instruction; the switch instructions are all connected to the terminal module, the terminal module sends control signals to corresponding main contacts of the bistable magnetic latching relay through hard wiring, the S end and the R end of the bistable magnetic latching relay correspond to the opening instruction and the closing instruction of the valve respectively, and when any end receives the instruction, the valve is opened and closed. And the bistable magnetic latching relay realizes opening and closing of the valve according to the corresponding switching state. According to the invention, it can be ensured that the solenoid valve is maintained in a power-on or power-off state, the risk of equipment misoperation caused by signal interruption is effectively avoided, and the safety of equipment and a unit is ensured.
Owner:JIANGSU NUCLEAR POWER CORP

Vehicle multi-domain fusion control method

The invention discloses a vehicle multi-domain fusion control method, and relates to the technical field of vehicle multi-domain fusion control, and the method comprises the steps: collecting and analyzing the data of each domain in real time through a central calculation unit CCP, rapidly judging whether the configuration parameters need to be updated or not when the working conditions change, and rapidly responding to various complex working conditions. In addition, an A2L file is automatically called through a CCP to be compared with a newest project configuration file, parameter items needing to be updated are automatically recognized, redundant data are eliminated, and then synchronous updating of configuration parameters of all control domains is guaranteed through centralized distribution of configuration updating files and a consistency scoring mechanism, so that the control effect and safety under automatic driving are improved. According to the method, the control deviation caused by desynchrony under the traditional architecture is avoided, the configuration requirements of each domain are automatically detected based on the CCP, parameter comparison and redundancy check are carried out through an automatic A2L file matching mechanism, the configuration file is quickly identified and updated, and the calculation burden of the system is reduced through redundancy elimination.
Owner:LONGHUI (INNER MONGOLIA) INTELLIGENT TECHNOLOGY CO LTD

Oil level online monitoring method based on ultrasonic waves

The invention relates to an online oil level monitoring method based on ultrasonic waves. The online oil level monitoring method specifically comprises the steps that ultrasonic probes are mounted at the bottom and the outer wall under an oil conservator in an adsorption mode through an ultrasonic coupling agent; ultrasonic waves enter the oil conservator through the coupling agent and are reflected when reaching the surface of the oil level in the oil conservator, a propagation path is calculated according to echo time, and then the height of the oil level is obtained; aiming at interference influence, measurement compensation is carried out, and a final result is corrected; the multi-frequency ultrasonic measuring sensor measures the height of the oil level in the oil conservator in real time and transmits the height to the system background; the multi-frequency ultrasonic measurement sensor compares the measured data with the reading of the traditional oil level gauge, and regularly performs online verification on the mechanical oil level; on the basis of online monitoring data, a corresponding relation graph of the oil level of the oil conservator, the environment and the working condition is established, and pre-judgment and early warning are achieved; based on the echo data information, the operation state is judged through a multivariate statistical analysis algorithm; the method has the advantages that the false oil level can be quickly distinguished, and the detection redundancy is increased.
Owner:STATE GRID HENAN ELECTRIC POWER CORP MAINTENANCE CO

Multi-master-control biplane real-time network control method and system and medium

The invention provides a multi-master-control biplane real-time network control method and system and a computer readable storage medium, and the method comprises the steps: firstly, carrying out the priority configuration of master stations in a master station set to obtain a priority sequence, selecting one master station from the master station set as an initial active master station, taking the other master stations as standby master stations, and carrying out the priority configuration of the master stations in the master station set; the method comprises the following steps of: acquiring an initial active master station, judging whether the initial active master station is abnormal or not in real time, and selecting a standby master station as the active master station through a preset standby master station switching algorithm if the initial active master station is abnormal, so that the redundancy of the whole system is improved, and even if the master station goes wrong, the standby master station can be quickly connected to work; when the movable master station sends data, two paths of data are sent to the terminal connected with the double planes through the double planes, the data transmission redundancy of the aircraft is further improved due to the existence of the double planes, the data transmission stability is improved, and the stability of the aircraft is further improved.
Owner:BEIJING TIANCHEN HECHUANG TECH CO LTD

Ultra-wideband radio frequency receiving front-end SIP module system based on HTCC

The invention belongs to the technical field of electronic reconnaissance, and discloses an ultra-wideband radio frequency receiving front-end SIP module system based on HTCC, which comprises a three-dimensional package for signal transmission, and the three-dimensional package comprises a BGA layer, a package internal signal transmission layer, a top microstrip wiring and a device placement layer; the miniaturization advantage is obvious: the packaging substrate is formed by sintering aluminum oxide ceramic at high temperature, and the packaging substrate has 12 layers and is small in size. And the system integration degree is high: a single SIP module can be integrated with radio frequency front-end systems such as an amplitude limiter, a radio frequency switch, a filter, a low noise amplifier, a digital control attenuator and the like, so that related function indexes are realized. According to the radio frequency transmission line and power supply structure design, the structure comprises a radio frequency signal transmission line and a power supply distribution line. Wherein the routing of the radio frequency layer adopts a quasi-coaxial-strip line-quasi-coaxial structure, and good signal transmission can be realized in a frequency band of 2-10GHz.
Owner:YANGTZE DELTA REGION INST OF UNIV OF ELECTRONICS SCI & TECH OF CHINE (HUZHOU)

LoRaWAN-based experimental equipment management system

The invention discloses an experimental equipment management system based on LoRaWAN, and aims to solve the problems of resource allocation conflicts, low data transmission efficiency and the like in laboratory equipment management. The system comprises an equipment control unit, a LoRaWAN communication unit, an electric energy monitoring unit, a user interaction display unit, a remote reservation management platform, a gateway and server unit and a firmware management and upgrade unit. A differential packet is generated by using a BSDIFF algorithm, and an LZ77 compression algorithm is combined, so that the transmission data volume of the system is effectively reduced; meanwhile, the gateway dynamically adjusts the size of a data block according to the network quality, and adopts a frame insertion strategy to embed upgrade data in a service data transmission gap; and after the terminal node receives and verifies the differential packet, new firmware is generated to replace old firmware, so that remote efficient updating is realized under the condition of ensuring normal use of equipment. The laboratory equipment management system greatly improves the management efficiency and stability of laboratory equipment, and is suitable for equipment management scenes of various scientific research laboratories.
Owner:ZHEJIANG UNIV OF TECH

Crown block cross-building working method, crown block cross-building working control method, crown block cross-building working control system and cross-building material carrying system

The invention discloses a crown block cross-building working method, a crown block cross-building working control method, a crown block cross-building working control system and a cross-building material carrying system. A bridging channel with a closed section is arranged between two buildings, and meanwhile, the bridging channel is connected with a manual intervention track matched with each building; a station group matched with each building is arranged in the closed section, so that the crown block executing the forwarding request starts data switching at different stations and determines whether the data switching is completed or not, and the crown block is controlled to move to a relay point of the closed section or a manual intervention track according to the condition that the data switching is completed; according to the method, the crown block can be controlled by the TCS of the target building to enter the target building as soon as possible after data switching is completed, meanwhile, the crown block enters the manual intervention track to be manually intervened when data switching of the crown block is abnormal, other crown blocks are not interfered to execute a transfer request during data switching and manual intervention, and efficient cross-building operation of the crown block is facilitated.
Owner:SUZHOU XINSHINUO SEMICON EQUIP CO LTD

An extremely high power density cylindrical linear motor

The present invention discloses an extreme high power density cylindrical linear motor, comprising a frame, a cylindrical primary assembly, a secondary assembly, a connecting piece, a hanging piece and a friction pair sliding piece; the frame comprises a primary mounting assembly, a long strip-shaped beam and a hanging piece; there are two primary mounting assemblies, which are respectively sleeved on the two ends of the primary assembly, the secondary assembly is sleeved in the middle of the primary assembly, and there are two long beams, which are symmetrically mounted on the upper and lower ends of the two primary mounting assemblies; a vertical hollow structure is arranged on the end face of the long beam close to the primary assembly, a horizontal hollow structure is arranged in the middle of the long beam, the hanging piece is embedded in both sides of the long beam, and grooves for placing the friction pair sliding pieces are also provided on the left and right side surfaces of the hanging piece, so that the winding utilization rate is high; the secondary is a cylindrical iron core with an embedded permanent magnet structure, which does not need to be powered by wires, so that it is easy to install and convenient to be hung with an execution structure; the motor has a small volume and weight and has a high thrust density.
Owner:NAVAL UNIV OF ENG PLA

A stroke position detection component for a cylinder driver of a hot runner

The invention relates to the technical field of detection devices, and discloses a stroke position detection component of a cylinder driver for a hot runner, comprising a displacement detection device and a cylinder, wherein the movement of a piston in the cylinder controls the movement of a valve needle in a mold, an uneven stepped protrusion is present on the top of the piston, the displacement detection device is arranged and fixed above the outside of the cylinder, an outer ring ultrasonic transmitter and an inner ring ultrasonic transmitter arranged in the displacement detection device are used to detect the distance between pistons in multiple cylinders, and the measurement error of the outer ring ultrasonic transmitter is greater than the measurement error of the inner ring ultrasonic transmitter, the position where the inner ring ultrasonic transmitter is arranged corresponds to the position of the protrusion on the piston, a scattering layer is provided between the outer ring ultrasonic transmitter and the inner ring ultrasonic transmitter and the cylinder, a crystal medium is provided in the scattering layer, the grains in the crystal medium are small and arranged in an orderly manner, and the sound waves emitted by the outer ring ultrasonic transmitter and the inner ring ultrasonic transmitter first pass through the crystal medium and then penetrate into the cylinder.
Owner:ZHEJIANG HENGDAO TECH

A coal mining environment perception system based on multi-sensor fusion

The present invention relates to the field of environmental monitoring technology, and in particular to a coal mining environment perception system based on multi-sensor fusion, comprising a coal mining environment analysis module, an environment detection module, a regional analysis module, an environment perception module and a coal mining environment early warning module; the coal mining environment analysis module determines the coal mining environment to be perceived, and determines the functional type of each perception area; the environment detection module detects the detection information of each perception area; the regional analysis module determines the type of safety hazard in each area; the environment perception module determines the environment perception strategy according to the type of safety hazard in each perception area; the coal mining environment early warning module is used to issue early warning information; the present invention divides the coal mining area into multiple functional areas, and deploys corresponding sensors according to the characteristics and safety requirements of each area, so as to ensure the relevance and accuracy of monitoring data, and improve the pertinence of data collection and the accuracy of coal mining environment perception.
Owner:ZHEJIANG ZHONGMEI HYDRAULIC MACHINERY

A circular hollow sealing ring for nuclear power valves

ActiveCN119146221Bimprove pressure distributionImprove carrying capacityNuclear powerExtreme temperature
The present invention provides a circular hollow sealing ring for nuclear power valves, belonging to the technical field of sealing rings; comprising a sealing ring body, the sealing ring body comprising an outer ring and an inner ring, the inner ring of the sealing ring body being provided with an inner sealing ring, the inner sealing ring being solidly provided, the inner sealing ring being made of flexible graphite packing, the outer ring of the sealing ring body being provided with an installation groove, the interior of the installation groove being provided with a middle sealing ring, the upper part of the middle sealing ring being provided with a top sealing ring, and the lower part of the middle sealing ring being provided with a bottom sealing ring. The present invention can automatically repair the sealing ring through a high temperature or high pressure environment when the sealing ring is micro-cracked or damaged, thereby improving the life and reliability of the sealing ring, extending the service life of the sealing ring, and improving its performance under extreme temperatures, while adding a radiation absorbent to improve the radiation aging resistance of the sealing ring, thereby enhancing the radiation tolerance of the sealing ring.
Owner:SICHUAN JUST RUBBER

Vehicle operation fault auxiliary control method, device and equipment and storage medium

The invention relates to the technical field of vehicle fault processing, in particular to a vehicle operation fault auxiliary control method, device and equipment and a storage medium. A vehicle control unit monitors a fault signal, determines a fault component, determines a priority target of fault processing according to the function category of the fault component, and then executes a corresponding processing plan; for example, a backup power conversion unit is activated or the use of non-driving core functions is limited to ensure that the vehicle can maintain basic safe driving capability or complete side parking. According to the scheme, it is ensured that the vehicle can operate safely when the vehicle encounters the steering or braking system fault through the three links of the fault assembly, the fault processing target and the fault processing plan, secondly, due to introduction of a hot backup mechanism, the redundancy of the system is enhanced, continuous operation of key functions is ensured, and the safety of the vehicle is improved. Even if the main system breaks down, the basic control capacity of the vehicle can be kept, driving safety is guaranteed, and the fault response and processing flow of the vehicle is optimized.
Owner:DONGFENG LIUZHOU MOTOR

Aircraft ram air intake system and control method

This invention provides an aircraft ram air intake system and control method. The system includes a ram air intake and an emergency ram air regulating valve. The upstream side of the ram air intake is connected to the outside atmosphere, and the downstream side is connected to a heat exchange ram air line and an emergency ram air line. The heat exchange ram air line is arranged to provide heat exchange ram air, and the emergency ram air line is arranged to provide emergency ram air to the aircraft cabin. The emergency ram air regulating valve is arranged in the emergency ram air line to control the on / off state of the emergency ram air line. The aircraft ram air intake system according to this invention is more economical and safer, and also improves the comfort of the aircraft cabin.
Owner:COMMERCIAL AIRCRAFT CORP OF CHINA LTD +1

Full-power pumped storage unit with multi-stage voltage architecture and control method

The invention discloses a full-power pumped storage unit of a multi-stage voltage architecture and a control method. Relates to the technical field of power systems. The multi-winding transformer is used for converting high-voltage electric energy of a power grid into multiple independent low-voltage electric energy to be output; the modular converter is used for rectifying and inverting multiple low-voltage electric energy and then generating multi-phase independent medium-voltage energy supply in a cascade form; the modular converter is connected with the secondary side of the multi-winding transformer; the multi-phase open winding motor is used for receiving multi-phase independent medium-voltage energy supply; the multi-phase open winding motor is connected with the output end of the modular converter; according to the scheme, on the basis of a traditional full-power variable-frequency variable-speed pumped storage unit, unit structure composition and unit management methods are improved, and a full-power variable-frequency variable-speed pumped storage unit topology and control method based on a high-low-middle framework is provided. The defects that a traditional high-power variable-frequency variable-speed pumped storage unit is high in manufacturing cost, poor in operation reliability, small in efficient operation area and the like are overcome.
Owner:STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST

Sliding mode fault-tolerant consensus control algorithm for multi-agent systems under super-helix observer

The present invention discloses a sliding mode fault-tolerant consistency control algorithm for a multi-agent system under a super-helical observer. Considering that the speed information of a second-order nonlinear multi-agent system is unmeasurable and an additive actuator fault occurs, a super-helical second-order sliding mode fault observer is first proposed, which can effectively estimate the speed state information of the agent and the actuator fault information. For the initial error problem and the peak problem, the observer estimation is made faster and more accurate by improving the observer structure and introducing the gain coefficient. Then, based on the integral sliding mode control, a fault-tolerant control method is proposed, the consistency error variable is defined according to the relative state information between the agents, and the sliding surface is designed based on the consistency error variable. Finally, a sliding mode fault-tolerant consistency control law is designed by combining the observer estimation value and the communication structure information between the agents. The control law can enable the multi-agent system to achieve the consistency target within a limited time under the influence of the additive actuator fault and the inherent nonlinear dynamics, thereby effectively avoiding the problem that the multi-agent system cannot complete the consistency task due to the actuator fault. The present invention can be used for the consistency control implementation problem of a class of multi-agent systems containing additive actuator faults and inherent nonlinear dynamics.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

A hybrid power module for ship propulsion

A hybrid power module for ship propulsion relates to the field of marine power technology. To address the problems of existing ship propulsion modules, which often employ electric motors, traditional heat engines, and parallel gearboxes for propulsion, resulting in large, complex systems with low space utilization and poor operational stability, this invention utilizes a highly integrated parallel reduction gearbox, a flexible coupling, and an electric motor. This achieves high power density and reduces the size by half compared to existing ship propulsion modules, improving hull space utilization. Furthermore, it can directly drive the propeller shaft without external power. With increased power, a diesel engine or gas turbine can be introduced to drive the propeller shaft in parallel with this module. The forward and reverse rotation of the propeller shaft can be achieved by engaging or disengaging forward and reverse clutches. This module enables operation and switching of six different main engine modes, providing high redundancy in the power system and ensuring operational stability. It has a wide range of applications. This invention is applicable to ships.
Owner:NO 703 RES INST OF CHINA SHIPBUILDING IND CORP

Imaging method of CT imaging system

An embodiment of the present invention provides an imaging method of a CT imaging system, which relates to the field of radiation scanning technology. The CT imaging system includes: an imaging channel; M distributed ray sources, at least one of which includes q target points; N detectors; the q target points included in at least one of the M distributed ray sources are arranged at intervals along a first straight line, and the first straight line is arranged obliquely relative to a first direction. The imaging method includes: placing an object to be imaged in an imaging channel; controlling the q target points of at least one distributed ray source to emit a ray beam to form an imaging area; using at least one detector to detect rays emitted from at least one distributed ray source and passing through the object to be imaged, and generating projection data based on the detected rays; generating a computerized tomography image of the object to be imaged based on the projection data. The beam emission time interval is determined based on the inclination angle of the extension direction of the first straight line relative to the first direction.
Owner:TSINGHUA UNIVERSITY +1

Oil-resistant high-precision embedded thermal resistor

The utility model provides an oil-resistant high-precision embedded thermal resistor, which belongs to the technical field of embedded thermal resistors, and comprises a reference end and a measuring end, the measuring end comprises a pipe sleeve head and two resistor elements arranged in the pipe sleeve head, the upper part of the pipe sleeve head is welded with an armored lead wire through laser, and the armored lead wire is connected with the reference end and the measuring end. The armored lead is sleeved with a silica gel heat shrink tube or a polytetrafluoroethylene tube, and a shielding lead is arranged between the armored lead and the reference end. According to the embedded thermal resistor, double resistor elements are adopted, so that the redundancy of a product is increased, cross validation can be realized, the measurement error is reduced, meanwhile, the lead directly connected with the measurement end is an armored lead, and a silica gel heat shrink tube or a polytetrafluoroethylene tube is sleeved on the lead, so that the oil resistance of the embedded thermal resistor is greatly improved, and the service life of the embedded thermal resistor is prolonged. In addition, environmental interference can be inhibited, thermal stability can be maintained, the service life can be prolonged, and the effective precision under actual working conditions is remarkably improved, especially in high-electromagnetic-interference, severe-temperature-change or corrosive environments.
Owner:YUEQING LONDER ELECTRONIC INSTR CO LTD +1

Network alarm method, device, equipment and medium

The invention discloses a network alarm method and device, equipment and a medium. The method comprises the following steps: acquiring each target log generated by target equipment within a preset target time period; processing each target log through a multi-dimensional feature extraction model to obtain a target feature set matched with each target log; according to the target scene information and the target feature set corresponding to each target log, respectively calculating to obtain an alarm score of each target log; and aggregating each target log based on the alarm score of each target log through a clustering classification algorithm to obtain an alarm aggregation result, and displaying the alarm aggregation result. Through the technical scheme of the invention, aggregation display of the network alarm can be realized, the redundancy rate of the alarm information is reduced, the display efficiency of the alarm information is improved, the utilization efficiency of the network alarm information by related personnel is improved, and the alarm effect is improved.
Owner:BEIJING YOUTEJIE INFORMATION TECH

Traffic signal lamp redundancy identification system and method based on red light narrowband filtering

PendingCN121789180AAccurately correct false positivesFalse alarm warningImage enhancementImage analysis
The invention provides a traffic signal lamp redundancy identification system and method based on red light narrowband filtering, and belongs to the technical field of intelligent driving environment perception. The system is characterized in that a main processing module processes a color image based on a YOLOv8n model and a lightweight convolutional neural network, and outputs a first recognition result and the confidence of the first recognition result; when the confidence coefficient is lower than a threshold value, a redundancy identification module is started, a narrow-band image obtained by an auxiliary imaging module is analyzed, whether a strong red light signal emitted by a traffic signal red light exists or not is judged through self-adaptive threshold value segmentation, morphological processing and feature analysis, and a second identification result is generated; and the decision fusion module fuses the two paths of results to generate a final control instruction. According to the invention, through physical spectrum filtering and double-path information fusion, interference of ambient light such as sunset and the like is effectively overcome, and the robustness and safety of an automatic driving system in recognizing traffic lights under complex illumination, especially red light, are remarkably improved.
Owner:SINO TRUK JINAN POWER CO LTD