87results about How to "Meet security needs" patented technology

The invention relates to the technical field of ship lock slope monitoring, in particular to a ship lock slope displacement monitoring and early warning method and system based on hull operation influence. The method comprises the following steps: carrying out ship lock slope multi-source data real-time acquisition on ship lock slope area nodes to obtain real-time ship lock slope multi-source displacement factor data; ship lock slope displacement prediction processing is carried out based on the real-time ship lock slope multi-source displacement factor data, and ship lock slope displacement prediction data is generated; based on the ship lock slope displacement prediction data, time sequence space evolution trend analysis and time sequence space evolution trend analysis of ship lock slope displacement are carried out, and space-time evolution ship lock slope deformation data are generated; and performing ship lock slope displacement monitoring and early warning state evaluation processing based on the space-time evolution ship lock slope deformation data to generate ship lock slope displacement monitoring and early warning state evaluation data. According to the ship lock slope displacement monitoring system and method, accurate monitoring of ship lock slope displacement is achieved by analyzing multiple factors related to the ship lock slope.

The invention discloses an intelligent security monitoring and early warning method and system for an industrial control network, relates to the technical field of network security monitoring, and can collect multi-dimensional data such as network traffic, user behaviors and equipment states in real time through a data acquisition module and a system to ensure the timeliness and comprehensiveness of monitoring. Therefore, potential security threats can be quickly identified, and the overall security protection capability is improved. And the data preprocessing module cleans and standardizes the collected data, so that the data quality and consistency are improved, a reliable basis is provided for subsequent risk assessment, and misjudgment caused by data inconsistency is reduced. And the risk assessment module calculates a comprehensive risk index through a multi-dimensional assessment formula, different types of security threats can be identified more accurately, and a scientific basis is provided for a subsequent early warning mechanism. The multi-level early warning mechanism module divides the risk into a low level, a middle level and a high level according to the comprehensive risk index, and a targeted response strategy can be realized.

The invention relates to a power data federated learning privacy protection method based on efficient homomorphic encryption. The method comprises the following steps: step 1, a client initializes a neural network model; step 2, the server side encrypts and updates local neural network model gradient parameters uploaded by the client side; 3, the server side executes gradient average aggregation operation, the server side does not need to decrypt, the encrypted gradient parameters uploaded by the client side are directly calculated, an average value is solved, and therefore global gradient parameters are updated; step 4, after each client receives the updated global gradient, carrying out decryption calculation operation; 5, loading the updated weight parameters of the neural network model into a local neural network model, and performing neural network model training by using a local data set; the problems that an existing encryption technology is large in operand, large in computing resource overhead and low in algorithm efficiency, and privacy leakage exists in the transmission and analysis process of power data can be solved.

The invention belongs to the technical field of airport boundary security and protection, and discloses an airport boundary detection method and system based on multiple modes. According to the method, the environment around the enclosure is analyzed in real time through the video personnel detection module, and whether a person approaches the enclosure or not is observed; detecting whether the prompt word and the content of the image are illegal or not, and if yes, not processing; analyzing the content in the image through the image understanding capability, the text understanding capability and the analysis capability of the multi-modal visual large model, and returning an analysis result; judging whether the input text content has the intention of damaging and invading the enclosure or not; if there is no intention of invading and damaging the enclosure, the abnormal alarm module is directly used. According to the method, a large model and traditional deep learning are combined, so that the accuracy and the overall efficiency of a security system can be remarkably improved. The ever-increasing safety requirement of the civil aviation industry is met, and new powerful power is injected for continuous and healthy development of the unmanned aerial vehicle.

The invention provides an interpretability-based image classification model backdoor defense method and device. The method comprises the following steps: building a clean model and a backdoor model of backdoor experimental environment reference training image classification; carrying out an interpretability experiment on the trained clean model and back door model to obtain concepts of various categories under the data set and screening the concepts; based on the screened concepts, carrying out comprehensive feature vector construction capable of being explained and expressed; taking the constructed comprehensive feature vector as an input to train a binary classifier used for distinguishing a clean model and a subsequent model; and judging whether the to-be-detected image classification model belongs to the backdoor model or not by using the binary classifier. According to the method, the image classification model backdoor defense method based on interpretability is introduced, the clean model and the backdoor model are effectively distinguished by utilizing the expression difference of the model under different interpretable methods, detection and defense of the backdoor injection attack are realized, the method has relatively high detection accuracy and practicability, and the safety and reliability of the model are improved.

The invention provides a vehicle safety access method, device and equipment and a storage medium, and the method comprises the steps: receiving a grade confirmation request sent by an upper computer, obtaining a current safety access grade of a controller, returning the current safety access grade to the upper computer, receiving a target seed request sent by the upper computer, and sending the target seed request to the controller; and obtaining a target seed, returning the target seed to the upper computer, receiving a key sent by the upper computer, performing consistency verification on the key, determining that the key consistency verification is passed, and unlocking the current security access level to the upper computer. Through the level confirmation request and the dynamic key verification, an illegal upper computer is prevented from finding out the security access level supported by the controller in a diagnosis message polling mode, it is ensured that the authorized upper computer securely accesses the controller, flexible access control can be carried out according to different security access levels, and the security of the access controller is improved.

The invention relates to the technical field of vehicle-mounted refrigerators, in particular to a full-automatic Y-direction telescopic and Z-direction lifting vehicle-mounted refrigerator with a transparent door body. The refrigerator comprises a shell body, an inner container shell is arranged in the shell body, an illuminating lamp and a sterilizing lamp are arranged at the top of the inner container shell, a refrigerating system is arranged on the back face of the shell body, a box frame is arranged on the front face of the shell body, a transmission device is arranged on the inner bottom face of the inner container shell, and a containing drawer is arranged on the transmission device. A door plate body is arranged on the front face of the object containing drawer, and a Z-axis moving assembly is movably arranged in the object containing drawer. Opening of the object containing drawer of the vehicle-mounted refrigerator can be directly controlled through the vehicle-mounted screen, the motor drives the transmission device to enable the object containing drawer to automatically move out of the inner container shell, manual pulling and taking are not needed, great convenience is provided for a user, especially in the vehicle running process, the user can conveniently take and use objects at any time, and the user experience is improved. And the use safety and convenience are enhanced.

The invention provides a hydrated calcium silicate fiber reinforced cement-based composite material and a preparation method thereof.The preparation method comprises the steps that C-S-H and absolute ethyl alcohol are evenly mixed, and then the structure of hydrated calcium silicate is destroyed through ultrasonic dispersion; then standing and separating to obtain supernatant liquid, and drying to obtain nano-sheet C-S-H; the preparation method comprises the following steps: dispersing nano-sheet C-S-H in deionized water, then adding PVA, heating and stirring at 95 + / -5 DEG C, cooling to 60 + / -5 DEG C after fully mixing, and stirring to remove bubbles to obtain a mixed solution as a spinning solution; using a saturated sodium sulfate aqueous solution as a coagulating bath, and spinning the spinning solution by using a wet spinning technology to obtain nascent fibers; the nascent fiber is subjected to two times of extension, the nascent fiber is firstly subjected to extension at 60 DEG C, then the fiber subjected to first-time extension is subjected to extension at 100 DEG C, and a C-S-H / PVA hybrid fiber is obtained; cement, stone, sand, water, a water reducing agent and the C-S-H / PVA hybrid fiber are used as raw materials, and the hydrated calcium silicate fiber reinforced cement-based composite material is obtained through molding. The problems that concrete is prone to cracking and high in brittleness can be solved.

This invention discloses a time-constrained, secure, and controllable data flow method in a cloud-edge environment, belonging to the field of mobile edge cloud computing. Specifically, it involves: First, establishing a communication scenario including an authorizing agency for both the sender and receiver, the sender, edge nodes, a cloud server, and the receiver. Given security parameters, the authorized agency for the receiver runs a global initialization algorithm, outputting public parameters and domain public / private keys. Then, the authorized agency for the sender inputs the public parameters and domain public key, outputting its own domain public / private key. For each sender, an access structure and a valid time interval are assigned, and an encryption key is generated. For each receiver, an attribute set is assigned, and a decryption key is generated. Finally, the sender runs the encryption algorithm and outputs the original ciphertext; the edge node verifies the sender's sending authority and outputs the cleaned ciphertext; and the legitimate receiver decrypts and outputs the plaintext. This invention meets the requirements for secure and controllable data flow in a cloud-edge environment.

The application discloses a fishing device used in the technical field of phosphating, which comprises a first hook, a second hook and a third hook, the first hook is connected with the second hook and the third hook, the third hook is connected with the first hook and the second hook, the top of the first hook, the second hook and the third hook is connected with a traction part, the traction part is used for pulling the first hook, the second hook and the third hook, when the force applied on the first hook by the traction part is greater than the force applied on the second hook and the third hook, the first hook vertically rises, the second hook and the third hook downwardly incline, and the second hook and the third hook are fixed from the side or the bottom of the hanging object by the downward inclination of the second hook and the third hook.

The utility model discloses a high-voltage grounding switch for electric locomotive teaching simulation, which comprises a connecting seat, the top of the connecting seat is rotatably connected with a shaft body, two sides of the shaft body are fixedly connected with a left support and a right support respectively, one end of the left support and one end of the right support are fixedly connected with knife switches, and two sides of the shaft body are connected with knife switches. One end of the connecting seat is fixedly connected with a contact spring piece, the contact spring piece corresponds to the position of the knife switch, a lower cover is arranged at the bottom of the connecting seat, one end of the lower cover is rotatably connected with an operating rod assembly, an interlocking mechanism, a turntable assembly and a connecting rod assembly are arranged in the lower cover, one side of the interlocking mechanism is connected with a lock assembly, and the lower end of the shaft body is connected with the connecting rod assembly. One end of the connecting rod assembly is connected with the turntable assembly, and one end of the turntable assembly is fixedly connected with the operating rod assembly. The appearance size, each part and action interlocking control performance of the device are consistent with those of a real piece, the teaching practical training requirement and the safety requirement are completely met, and meanwhile the cost is greatly reduced.

The invention discloses a display system and method for enhancing DLP projection vehicle lamp network information safety, and belongs to the technical field of vehicle lamp information safety. The system comprises a communication module used for receiving encrypted video data and control data sent by a vehicle body; the decryption module is used for decrypting the data transmitted by the communication module; the identity authentication module is used for periodically diagnosing the data decrypted by the decryption module and judging whether the current user information is valid or not; and the intrusion detection module is used for monitoring the network security state of the system in real time and detecting and preventing unauthorized access and operation. According to the display system and method for enhancing the network information security of the DLP projection vehicle lamp provided by the invention, the information security module is added in the DLP projection system, so that the possibility that the DLP projection vehicle lamp control system is maliciously attacked in data transmission is reduced, and the vehicle privacy and the driving safety are protected.

The utility model discloses an isolated baby raising house for pandas, which belongs to the technical field of baby raising houses and comprises a delivery room, a corridor and an isolated room arranged in a feeding room body, the corridor is arranged on the outer side of the feeding room body, and a light-transmitting window is further arranged at the top of the feeding room body. A partition channel is formed in an adjacent partition wall between the delivery room and the movable room and used for allowing the small pandas to pass through, a delivery room door is arranged between the delivery room and the corridor, a movable room door is arranged between the movable room and the corridor and used for allowing people to pass through, and an additional channel is added in the delivery room, so that breeders and the channel for the small pandas in the lactation period do not interfere with each other; the pandas can be isolated outside the delivery room and cannot enter the delivery room, so that the pandas in the lactation period are effectively prevented from being in surface contact with breeders, the pandas are not prone to stress, the probability that the pandas seize cubs is effectively reduced, the survival rate of the cubs of the pandas is increased, and the breeding of endangered species is promoted.

The high-safety automobile steering pull rod comprises an outer rod body, the two ends of the outer rod body are in threaded connection with fixing bases, the circumferential inner walls of the fixing bases are in threaded connection with threaded rods, one ends of the threaded rods are fixedly connected with ball cups, the outer walls of the threaded rods are sleeved with locking rings, and the locking rings are fixedly connected with the ball cups. The locking ring abuts against the outer wall of one end of the fixing base through a ball cup at one end of the threaded rod, a reinforcing cavity is formed in the outer rod body, and an inner supporting assembly is arranged in the outer rod body. By the adoption of the inner supporting assembly, the outer rod body can be well supported, the strength of the outer rod body is further improved under the condition that the light weight of the outer rod body is guaranteed, and therefore the whole steering pull rod is not prone to cracking or damage fracture after being used for a long time, and the service life of the steering pull rod is prolonged. And the safety of the whole steering pull rod is effectively improved.

The present invention provides an electronic seal encryption and decoding method and device, the method comprising: generating a random number, and obtaining the IMSI number and PIN code of the communication device; generating an encryption key for encrypting the electronic seal on the communication device according to the IMSI number, PIN code and random number; encrypting the electronic seal using the encryption key to obtain the encrypted electronic seal. The present invention enhances the protection of the electronic seal and improves the security of the electronic seal on the communication device.

A method, system and device for secure communication between a sensing device and a satellite, and a storage medium, the method comprising: monitoring various terminal data information through the sensing device, encrypting the acquired data information by using a dynamic white box encryption algorithm, and uploading the encrypted data information to an edge computing gateway; the edge computing gateway distributes the received data information to different data queues according to the data security level, and performs security verification and decryption according to a security policy; classifying the plaintext data according to security levels and distributing the plaintext data to different data queues; compressing the plaintext data in the different data queues, and encrypting the data in the different data queues according to formats and classification of security levels; and the encrypted data is sent to the communication satellite, the communication satellite sends the data to the ground management system through the gateway station, and the ground management system carries out summarization, statistics and business processing on the received data. According to the invention, the security of monitoring data transmission and the data transmission efficiency are improved.

The invention provides a traffic safety processing method, system and device, equipment, a storage medium and a product. The method comprises the following steps: acquiring network traffic sent from a user terminal to the Internet from an access network; matching the network traffic with a user-defined security policy; under the condition of successful matching, determining target traffic classification identification information corresponding to the network traffic according to the self-defined security policy; under the condition that the matching fails, matching the network traffic with a service scene security policy, and determining target traffic classification identification information corresponding to the network traffic; matching a corresponding target security policy according to the target traffic classification identification information; and performing security processing on the network traffic according to the security capability node corresponding to the target security policy.

The utility model belongs to the technical field of medicine taking grippers, and particularly relates to a rapid medicine dispensing machine medicine taking gripper based on flexible gripping, which comprises a base plate, a rotating motor is mounted on the base plate, the output end of the rotating motor is fixedly connected with a rotating disc, a support is mounted at the top of the rotating disc, a first motor is mounted in the support, and a second motor is mounted in the first motor. The output end of the first motor is fixedly connected with a first force arm. According to the manipulator, three-dimensional space positioning of the tail end of the gripper is achieved through the rotating motor and the multi-joint force arm, the horizontal operation range can be enlarged, and the gripping angle can be accurately adjusted; the arc-shaped active clamping jaw and the auxiliary clamping jaw are matched with the connecting rod, the U-shaped rotating rod and the closing plate, so that flexible wrapping and grabbing can be realized by fitting the shape of the medicine, the contact stress is reduced, and the damage risk is reduced; and the rotating stability is improved through the design of a base plate supporting column and balls, the grabbing efficiency can be improved through the overall scheme, multi-shape medicine compatibility can be achieved, and the requirements of automatic medicine dispensing for efficiency and safety are met.

The application discloses a transient stability prevention control measure generation method and a related system, including the following steps: in a predicted fault scenario, a machine learning model is used to predict the transient stability of the current operation mode of a power system, the input of the machine learning model including various electrical characteristics related to the transient stability of the power system; the operation mode predicted as unstable is taken as an explained sample, a model explanation method is used to determine the influence degree of each electrical characteristic in the explained sample on the transient stability; candidate control units are determined according to the influence degree, and the candidate control units are adjusted, and the machine learning model is used to predict the transient stability of the adjusted operation mode until an operation mode predicted as stable is obtained, so that transient stability prevention control measures are generated. The method improves the explainability of the data-driven transient stability analysis model, the overall scheme requires a short time, and is suitable for online application.

The present invention discloses a design method and device for automotive communication middleware DDS, which relates to the field of automotive communication, including: determining the functional anomalies that occur in the DDS communication middleware during vehicle communication, and the hazardous events caused by the functional anomalies; conducting risk assessment on the hazardous events caused by the functional anomalies, and determining the highest risk level of the hazardous events caused by the functional anomalies; if the system needs to be analyzed according to the functional safety standard according to the highest risk level, the functional anomalies are classified according to the functional type to obtain various functional anomalies, and the top-level security requirements of various functional anomalies are determined; based on the top-level security requirements and various functional anomalies, a security mechanism is formulated, and the security state that the DDS communication middleware enters when various functional anomalies are detected is determined; based on the security mechanism and the security state, the design of the DDS communication middleware that meets the functional safety requirements is completed. By applying the technical solution of the present application, it can be ensured that the designed DDS communication middleware meets the functional safety requirements.

The utility model belongs to the technical field of revolving doors, and particularly relates to a revolving door grounding structure which comprises a revolving door, an upper hinge arranged at the top of the revolving door and a lower hinge arranged at the bottom of the revolving door, the grounding structure comprises a connecting piece and a supporting assembly, and the supporting assembly is connected with the revolving door. The hinge sleeve I and the hinge sleeve II are made of insulating materials, the lower hinge is in direct contact with the connecting piece, the supporting assembly and the rotating door are connected and conducted through the connecting piece, the supporting assembly is in threaded connection with the rotating door, a thimble is arranged in the connecting piece, the thimble is elastically connected with the connecting piece, and the thimble is in direct contact with the lower hinge. And one end of the connecting piece is of a spring twist structure, and when the revolving door rotates, the connecting piece rotates synchronously, so that the abrasion of the revolving door and the grounding structure is reduced, and the service life of the revolving door is prolonged.

The invention discloses a bench press safety alarm system based on real-time monitoring, which relates to the field of bench press safety alarm and comprises a data acquisition module, a server, a biomechanics module, a physiological analysis module and a management alarm module. The method comprises the following steps: respectively carrying out quantitative analysis on a muscle state, a torque state and a body stable state of a bench press on the basis of muscle movement information, torque information and body movement information of the bench press to obtain a signal frequency drop abnormal value, an inter-muscle cross correlation coefficient, a muscle abnormal value and a bench press twisting stable value, and carrying out analysis to obtain a biological force state value of the bench press; carrying out numerical analysis on the received sweat information, respiration information, skin information and saliva information to obtain a physiological state value of a bench press person, and judging the comprehensive motion state of the bench press person based on the biological force state value and the physiological state value of the bench press person to obtain a corresponding alarm strategy corresponding to an abnormal bench press person. The fitness state of a bench press sporter can be accurately judged from multiple directions, and the bench press sporter can be reminded in time.

The invention provides a passive cold storage box design method based on multi-physics coupling simulation, which comprises the following steps: step 1, establishing a three-dimensional geometric model of a passive cold storage box in COMSOL Multiphysics, including a box body thermal insulation layer, an internal cavity and an ice plate, and endowing the ice plate with a phase change material attribute module; 2, setting a multi-physical field boundary condition and an initial state, and setting a transient solver; 3, setting a solid heat transfer control equation; and 4, parametric scanning is adopted, a simulated temperature-time curve is obtained through transient solution, and ice plate distribution meeting the cold storage condition is screened. According to the method, the temperature field distribution and the temperature-time change curve in the passive cold storage box can be obtained, so that a better arrangement mode meeting the cold storage requirement is determined, the temperature of the cavity in the cold storage box can be maintained to be less than or equal to 15 DEG C by adopting the mode, and the duration time reaches more than 40 hours.

The embodiment of the invention relates to an information transmission method and device, communication equipment, a communication system and a storage medium, user equipment (UE) obtains a PC5 security policy, and the PC5 security policy is used for protecting PC5 communication between relay UE and remote UE.

The explosion-proof and intrinsic safety type controller comprises a box body, the front end of the box body is provided with an intrinsic safety cavity and an explosion-proof cavity, and the front end of the intrinsic safety cavity and the front end of the explosion-proof cavity are hinged to an intrinsic safety panel and an explosion-proof panel respectively. A main control panel is arranged in the intrinsic safety cavity, a display panel electrically connected with the main control panel is arranged at the front end of the intrinsic safety panel, a power panel, a battery box and a power module are installed in the explosion-proof cavity, a battery is installed in the battery box, and the battery and the power module are both electrically connected with the power panel; a wire conduit is further arranged between the intrinsic safety cavity and the explosion-proof cavity, and the power panel is electrically connected with the main control panel through a wire in the wire conduit. According to the system, the safety requirement of the complex environment under the coal mine is met, the use efficiency of the equipment and the user experience are improved through function optimization, and a more comprehensive and effective guarantee is provided for safety production of the coal mine.

This invention relates to the field of intelligent lighting technology and discloses a method and system for predicting urban lighting demand based on a spatiotemporal graph neural network. The system includes: a multi-source data perception and processing module, a spatiotemporal graph construction and feature learning module, a meta-learning adaptive prediction module, a lighting strategy optimization and execution module, and a model online update module. By integrating multi-source heterogeneous data from IoT terminals and urban management databases to construct a unified spatiotemporal dataset, and utilizing a spatiotemporal graph neural network to simultaneously learn the complex dependencies of different nodes in the city in the temporal and spatial dimensions, it can more comprehensively and accurately depict the formation and evolution of urban lighting demand, thereby improving the accuracy and reliability of predicting future lighting demand intensity and providing a basis for energy-saving regulation. By introducing a meta-learning strategy, the prediction model can utilize historical experience to adapt to new urban areas and time periods, solving the problem of insufficient generalization ability of the model in unfamiliar scenarios.

The utility model relates to the technical field of building construction, and disclose a kind of side-mounted no column stair aluminum alloy glass handrail fixing device. The device adopts modular design, including glass handrail fixed plate, clamping groove, middle decorative cover plate, lower decorative cover plate, U-shaped rubber pad, wedge-shaped rubber strip, and is connected with wall body by expansion bolt to form stable support structure. The device takes aluminum alloy fixed plate as main force component, combines A / B double-piece hollow clamping groove and plum-blossom-shaped expansion bolt layout, realizes the balance of light weight and high strength. The wedge-shaped rubber strip and the self-adapting clamping system formed by U-shaped rubber pad of the device can compensate for glass thickness tolerance and effectively reduce metal collision noise. The device uses welding-free installation process, and is matched with anodized decorative cover plate. It is suitable for various architectural styles, maintenance is more convenient, and safety and aesthetic evaluation are better.

The invention belongs to the technical field of relay protection device registration authentication, and particularly relates to a relay protection device encryption system and a registration authentication method thereof. The method comprises the following specific steps: in order to solve the problem that a power grid cannot run stably due to the fact that an unofficial-channel relay protection device with low safety is mixed in the power grid, registration authentication is carried out on the relay protection device obtained through an official channel, so that the relay protection device subjected to registration authentication works normally; the safety and reliability of the relay protection device are effectively ensured, and for the relay protection device obtained from an unofficial channel, the device cannot be normally put into use because the device is not registered and authenticated and the key and liquid crystal operations of the relay protection device are locked, so that the relay protection device obtained from the unofficial channel is effectively prevented from being put into operation, and the safety of the relay protection device is ensured. Safe and stable operation of a power grid and a power system is ensured.

This invention proposes a design method for an omnidirectional icebreaker wave generator in actual ice-covered sea areas. First, data collection and processing are performed, collecting and processing relevant information about the target sea area and sea ice. Then, based on the potential flow theory model, the wave generation period interval, sea ice strain response, wave height scaling factor are calculated. The wave height scaling factor is used to calculate the target wave height and maximum stroke, resulting in the target period wave. Finally, the target period wave is used to obtain the wave generator shape curve, completing the wave generator design.

The invention relates to the technical field of network security protection, and discloses a photovoltaic station 5G network security protection system, which comprises a 5G network security module, the 5G network security module comprises a risk evaluation module, a protection system module and a data transmission module, the risk evaluation module performs construction drilling based on a chaos engineering theory, and the protection system module performs data transmission based on the chaos engineering theory. The risk assessment module is connected with a data acquisition module, the data acquisition module and the protection system module are constructed based on a digital immune technology, and the data transmission module constructs a data transmission channel based on a framework of an endogenous safety protection model. According to the invention, the network security protection model is constructed, then the terminal monitoring module monitors the abnormal behavior of the terminal after the access of the 5G access module, and a protection system is constructed, so that the problems of weak 5G security protection capability and insufficient risk management and control means of the current photovoltaic station are solved.