29results about How to "High security requirements" patented technology

The invention relates to the technical field of information security, and discloses a data security management system and method in an intelligent power grid, and the system comprises a dynamic encryption and key management module which is used for carrying out the encryption and key management of the data of the intelligent power grid, determining an encryption algorithm according to the sensitivity of the data, and generating a corresponding key, the dynamic encryption and key management module transmits encrypted data and key information to the adaptive access control module so as to ensure the security of data access; and the self-adaptive access control module is used for managing access permissions of the user and the equipment and performing dynamic authorization according to the attribute label and the context information. Through dynamic encryption and adaptive key management, an encryption algorithm and a key length are adjusted in real time according to data sensitivity and a network environment, a quantum key distribution technology is combined, high security and quantum attack resistance of a key are ensured, and then security and real-time performance of data transmission are ensured.

The invention belongs to the technical field of anchoring strength detection, and discloses an underground anchor rod anchoring strength prediction method and system based on a support vector machine method. The method comprises the steps of cleaning data, processing missing values and standardizing features; using correlation analysis or other feature selection methods to select features with high correlation with anchoring strength; performing model training by using a support vector machine method SVM, and optimizing hyper-parameters by using grid search; completing the construction of a support vector machine model; and carrying out model evaluation and result visualization. Key parameters in the mixing process are monitored in real time through the sensor network, the system can obtain anchoring strength data in real time, the detection period is greatly shortened, and the construction efficiency is improved. The support vector machine algorithm is adopted to analyze and predict the collected data, personal errors can be eliminated to a greater extent, and the accuracy and reliability of anchoring strength detection are improved.

The invention provides a channel acquisition circuit of a digital quantity input signal. Comprising an optical coupler used for converting a digital quantity input signal into an optical signal according to a current transmission rate and a forward conduction voltage and then converting the optical signal into an electric signal; the resistors comprise a series resistor and a parallel resistor, and the series resistor is used for limiting the current flowing to the optical coupler so as to control the conduction state of the optical coupler; the parallel resistor is used for adjusting the input current of the optical coupler so as to control the optical coupler to be switched on or switched off in a preset voltage range, and when a single resistor fails, the threshold level when the single resistor fails is evaluated; and the general input and output interface is used for receiving the electric signal converted by the optical coupler, judging the state of the digital quantity input signal according to the level change of the electric signal, and collecting the digital quantity input signal according to the state of the digital quantity input signal. The circuit cost is reduced, the circuit structure is simple, and the design meeting the high safety performance requirement is achieved.

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.

The invention discloses a power grid terminal network security protection method and apparatus, a terminal device and a storage medium. The method comprises the steps of obtaining a security event log of a to-be-protected power grid; the security event log comprises terminal operation state data, a network flow log, a firewall log and historical attack event data; performing feature extraction on the security event log to obtain a terminal security log feature corresponding to the security event log; inputting the terminal security log feature into a preset network threat identification model for different-dimension analysis and identification to obtain a network security threat; determining a corresponding network security protection strategy according to the network security threat, the historical attack event data and a preset threat level table; and executing the network security protection strategy on a to-be-protected power grid according to the network security protection strategy. According to the invention, the accuracy of power grid security threat identification is improved, and the high security requirement of power grid terminal equipment is met.

The present invention discloses a video stream security transmission system based on quantum random numbers, comprising: a first quantum random number unit, used to generate and / or store at least one group of first quantum random number sequences; a first security storage unit, used to store a first identity authentication key; a first main control unit, used to access the first identity authentication key stored in the first security storage unit through a handle, and based on obtaining a group of first quantum random number sequences and the first identity authentication key from the first quantum random number unit, using a symmetric encryption algorithm mechanism to perform identity authentication with a video receiver; also used to obtain a group of first quantum random number sequences from the first quantum random number unit, and negotiate a video encryption and decryption key with the video receiver based on the group of first quantum random number sequences; and also used to encrypt a digital video signal based on the video encryption and decryption key. The present invention uses encryption technology combined with quantum random numbers to improve the security requirements of video transmission.

The invention relates to the technical field of textile dyeing, and discloses a multifunctional cloth dyeing method based on a natural plant extract and a product, and the multifunctional cloth dyeing method comprises the following steps: S1, extracting natural plants: extracting natural pigments and functional components from the natural plants; s2, preparation of dye liquor: preparing the dye liquor containing natural plant extracts; s3, dyeing treatment: immersing the cloth into the dye liquor, and realizing uniform dyeing of the cloth by controlling dyeing parameters; s4, fixation treatment: carrying out fixation treatment on the dyed cloth; s5, washing and drying: washing and drying the cloth subjected to color fixation. By using the natural plant extract as the dye, the pollution of the traditional chemical dye to the environment is avoided, and the dyeing process is eco-friendly and sustainable. Meanwhile, the natural extract is harmless to human bodies, reduces irritation of chemical residues to skin, is especially suitable for production of products with high safety requirements such as infant clothing and medical textiles, and has high health safety.

The embodiment of the application discloses an industrial internet threat identification method and system, the method comprises the following steps: collecting multi-source data in the industrial internet scene in real time through a bypass deployed collection terminal; pre-processing and feature extraction are performed on the multi-source data to obtain first features and second features; the first features and the second features are fused to obtain fused features; the fused features are identified by using a threat identification engine to obtain a threat identification result. The application has the following advantages: 1. The single-dimensional detection limitation is broken, the coordinated attack can be effectively identified, and the false positive rate and the false negative rate are reduced; 2. The known threat and the unknown threat are fully covered, and the high safety requirement of the industrial system can be met; 3. The attack chain correlation analysis across domains and time is supported, the attack process can be completely restored, the attack influence range is clear, and accurate basis is provided for threat disposal; 4. The industrial production network is not invaded, the normal communication process is not disturbed, and the core requirement of the industrial scene, that is, low invasion and high availability, is met.

The present invention proposes a multi-modal fusion handwritten electronic signature verification method, which includes the following modality data preprocessing and feature extraction steps: S1 : Collect several modal data of the user's handwritten electronic signature, including signature image pic and signature timing data seq;S2 : Obtain the pressure matrix through the signature time series data pmat ; The signature timing data includes the horizontal coordinates of each moment xt , vertical coordinate yt and pressure pt , first generate the size ymax × xmax Two-dimensional all-zero matrix, then put the matrix in yt OK xt The column is assigned pt ; Interpolate the matrix and unify it to the signature image pic Same size H × W ; S3 :Extract local features through signature time series data, and define time functions at the same time. Extract speed, angle and acceleration features from the time series with coordinate, time and pressure information to obtain the time series with extended dimensions. Through interpolation operations, the writing time differences of each signature are regularized to a uniform length. L .

The invention discloses a manual emergency driving device with an adjustable operation distance for a nuclear power station. The manual emergency driving device comprises a hand-cranking mechanism, a driving mechanism and a driving mechanism, the flexible shaft mechanism is used for transmitting the power transmitted by the hand-cranking mechanism in a space with an adjustable operation distance; and the driving mechanism is used for being connected with a walking structure or a hoisting mechanism in the hoisting equipment, and based on the power transmitted by the flexible shaft mechanism, the walking structure or the hoisting mechanism is operated to a safe area and then the load is released. The manual emergency driving device with the adjustable operation distance can enable the operation space to be larger and safer, is different from a traditional manual operation mechanism which directly acts on a driving mechanism, and is small in space and large in danger.

The high-protection outer rotor axial flow fan comprises an outer rotor motor and a wind wheel, the outer rotor motor comprises a base, an outer rotor assembly, a rotating shaft and a stator assembly, and the base comprises a bottom plate and a sleeve protruding upwards from the middle of the top face of the bottom plate. The shaft support is installed on the two bearings, the top end of the shaft support is connected with the outer rotor assembly, the stator assembly is arranged outside the sleeve in a sleeving mode, an annular boss is arranged on the edge of the bottom plate, and a labyrinth sealing structure is formed by the annular boss and the end of the outer rotor assembly. The wind wheel comprises blades and a hub, the blades are installed on the outer side of the hub, and the hub is installed outside the outer rotor assembly through an installation support. The base is sleeved with an outer water retaining ring, an inner water retaining ring is installed on the installation support, and the outer water retaining ring and the inner water retaining ring are matched to form a water retaining device on the periphery of the labyrinth sealing structure. The waterproof and dustproof levels of the axial flow fan are greatly improved, the reliability is high, and the failure rate is low.

The invention belongs to the technical field of separation and purification, and particularly relates to a separation and purification method of 3-fucosyllactose. According to the method disclosed by the invention, the 3-FL can be efficiently separated and purified through two crystallization processes by controlling the proper graining temperature, associating the graining sugar degree with the two times of seed crystal adding time and controlling the cooling crystallization rate, so that a high-quality 3-FL crystallization product is obtained. The method is simple and convenient, is more suitable for industrial production, and can be used for extracting and purifying high-quality 3-FL only through simple and conventional pretreatment steps; more widely, the method can be used for extracting high-quality 3-FL from a crude 3-fucosyllactose solution prepared by an enzyme method and a chemical synthesis method.

The invention provides a terminal communication module and a near-zero power consumption perceptual information security communication method, and the terminal communication module comprises an active communication assembly which is used for providing access attachment and active active communication capability of active cellular mobile communication; the passive communication component is used for providing access attachment and passive communication capability of passive cellular mobile communication; the passive communication component is also used for self-charging by receiving an energy supply signal and providing charging capacity for an external lithium battery through the power management component; the safety protection assembly is externally connected with the sensing assembly and is used for providing the safety protection capability of the application for the external sensing assembly; the power management assembly is used for providing required voltage for the active communication assembly, the safety protection assembly and the power management assembly and reversely providing a charging function for an external lithium battery in cooperation with the passive communication assembly; according to the invention, the advantages of near-zero power consumption, maneuverability, mobility, middle and long distance coverage, safe communication and the like can be considered at the same time on the premise of being compatible with standards and industrial chains.

The application provides a monocular three-dimensional target perception method, system and device based on instances, the method comprises the following steps: acquiring multi-view images collected by a vehicle-mounted camera; inputting the multi-view images into a monocular three-dimensional target perception model to obtain instance perception results; the monocular three-dimensional target perception model is used for feature extraction on the multi-view images, depth information enhancement on multi-scale feature maps, cross-attention operation on a pre-constructed query vector and a depth perception feature map, depth estimation on instance query features based on a pre-constructed reliability evaluation model, feature calibration on the instance query features based on a depth reliability weight factor, and decoding on the calibrated instance query features; the application can evaluate the depth reliability of each instance query feature and differentially calibrate the corresponding instance query features based on each depth reliability evaluation, thereby effectively improving the perception accuracy of targets in scenes such as occlusion and scale variation.

The medical system has a medical device for generating medical images and a network device capable of communicating with the medical device. The network device generates identification information corresponding to the examination information, stores the examination information and the identification information in a first storage area of ​​a storage unit in association with each other, and sends the identification information to the medical device. The medical device receives the identification information sent by the network device, and sends the identification information and the generated medical image to the network device in an associated manner. The network device receives the identification information and the medical image sent by the medical device in an associated manner, and stores the examination information stored in the first storage area in an associated manner with the medical image in a second storage area of ​​the storage unit.

Embodiments of the present application provide a chip, a physically unclonable function generator and a chip authentication method. The chip comprises a first magnetic conducting sheet, a die and a second magnetic conducting sheet, the die is arranged on the second magnetic conducting sheet, and the first magnetic conducting sheet is arranged on the die. The size of the first magnetic conducting sheet is greater than the size of a storage array in the die, the storage array comprises a data array and a physically unclonable function array, and the data array is located at the periphery of the physically unclonable function array. The chip is placed in an external magnetic field, and when the external magnetic field causes the second magnetic conducting sheet to reach a magnetic saturation state, the resistance state of part of the storage units in the physically unclonable function array is reversed. The working range of the physically unclonable function array is widened, so that it can work in a stronger external magnetic field.

The present invention belongs to the field of wireless communication technology, and specifically relates to an improved interference alignment secure transmission method for avoiding elimination of useful signals; the method comprises: a confidential transmitting end sends a confidential signal to a receiving end, and a non-confidential transmitting end sends a non-confidential signal to a receiving end; the receiving end comprises a confidential receiving end, a non-confidential receiving end and an eavesdropping user; an improved interference alignment algorithm for avoiding elimination of useful signals is used to process the transmitting signal and the receiving signal to obtain a transmitting scheme and a receiving scheme; a maximum security rate objective function is constructed according to the transmitting scheme and the receiving scheme; the maximum security rate objective function is solved to obtain an optimal power allocation scheme for a confidential transmitting end; and signal secure transmission is performed according to the transmitting scheme, the receiving scheme and the optimal power allocation scheme for a confidential transmitting end; the present invention avoids the problem that a traditional interference alignment algorithm may cause elimination of useful signals, and can guarantee the service quality of confidential users to the greatest extent on the basis of ensuring security performance.

The automatic filter element grabbing device based on flexible limiting comprises a hollow screw rod, a lower mounting plate and an upper mounting plate, a grabbing assembly used for grabbing a filter element is arranged at the bottom end of the hollow screw rod, and a pressure sensor is fixedly connected to the lower surface of the upper mounting plate; a suspension mounting plate is fixedly connected to the bottom end of the pressure sensor, sliding rods are fixedly connected to the four corners of the upper surface of the lower mounting plate, sliding grooves matched with the sliding rods are formed in the four corners of the suspension mounting plate, baffles are fixedly connected to the top ends of the sliding rods, and springs are fixedly connected to the lower surfaces of the baffles. Through cooperation of the hollow screw rod, the lower mounting plate, the upper mounting plate, the grabbing assembly, a pressure sensor, a suspension mounting plate, a sliding rod, a sliding groove, a baffle, a spring and a driving assembly, the grabbing process is more stable and safer, and the grabbing device is suitable for application environments with higher requirements for safety and reliability in nuclear-grade waste filter element replacement scenes.

This invention discloses a path planning method based on the soft fusion of virtual chemical fields and reinforcement learning, belonging to the field of robot navigation and artificial intelligence technology. The method includes the following steps: constructing a confined space containing obstacles, setting the initial and target positions of the moving subject; constructing a virtual chemical field that attracts the target and repels the obstacle, calculating the field strength characteristics and evolution trend, and scheduling forward movement, fine-tuning, and large-scale turning to generate guiding actions; constructing a reinforcement learning policy model to generate policy actions; introducing an exponential decay soft fusion mechanism to select either a guiding action or a policy action as the final action with decreasing probability; driving the subject to move to a new position, obtaining a reward according to a reward function, and storing the interaction samples in an experience pool; updating the policy model after the samples reach a threshold, repeating until convergence; and generating a collision-free path from the initial position to the target when obstacles change. This invention achieves efficient adaptive collision-free path planning through the soft fusion of biomimetic guidance and reinforcement learning.

This application provides a chip, a physically unclonable function generator, and a chip authentication method. The chip includes a first magnetically conductive sheet, a bare die, and a second magnetically conductive sheet. The bare die is disposed on the second magnetically conductive sheet, and the first magnetically conductive sheet is disposed on the bare die. The size of the first magnetically conductive sheet is larger than the size of the memory array in the bare die. The memory array includes a data array and a physically unclonable function array, with the data array located around the periphery of the physically unclonable function array. When the chip is placed in an external magnetic field, and the external magnetic field causes the second magnetically conductive sheet to reach magnetic saturation, the resistance state of some memory cells in the physically unclonable function array flips. This broadens the operating range of the physically unclonable function array, enabling it to operate in stronger external magnetic fields.

The invention discloses a rear wheel cover reinforcing structure and a design method thereof, and the rear wheel cover reinforcing structure comprises an inner plate reinforcing structure arranged on a rear wheel cover inner plate and an outer plate reinforcing structure arranged on a rear wheel cover outer plate, the inner plate reinforcing structure comprises an inner plate main reinforcing structure extending from the upper portion of the rear wheel cover inner plate to the lower portion of the rear wheel cover inner plate and an inner plate auxiliary reinforcing structure fixed to the inner plate main reinforcing structure. The outer plate reinforcing structure comprises an outer plate main reinforcing structure extending from the upper portion of the rear wheel cover outer plate to the lower portion of the rear wheel cover outer plate and an outer plate auxiliary reinforcing structure fixed to the outer plate main reinforcing structure. The inner plate main reinforcing structure provides main reinforcing support for the rear wheel cover inner plate. The inner plate auxiliary reinforcing structure can disperse part of load borne by the rear wheel cover to the D column, and deformation generated when the rear wheel cover is excited by the rear shock absorber is reduced. The outer plate auxiliary reinforcing structure transmits the load borne by the rear wheel cover to the C column, the overall strength of the vehicle body structure is enhanced, deformation generated when the rear wheel cover is excited by the rear shock absorber is reduced, and the deformation resistance of the rear wheel cover is improved.

The invention discloses an underwater waste liquid self-adaptive collecting device and a waste liquid collecting method, and belongs to the technical field of environmental protection. The device comprises a cover opening device and a cover closing device which are connected with a barrel cover of the waste liquid recycling barrel; the cover opening device and the cover closing device are started through the pressure and density changes of water, and automatic opening and closing of the waste liquid recycling bin cover are achieved. Automatic control is achieved through a spring mechanism in the working box and the action of the floating block. The pressure of the spring is automatically adjusted by utilizing the pressure of water and the density change of waste liquid, so that the gear system is driven to execute cover opening and closing operation, the unidirectionality and stability of gear movement are ensured through the design of the eccentric hole, the possibility of reverse movement or misoperation is avoided, and the reliability of the device in a complex underwater environment is enhanced.

The invention discloses a data stream splitting and transmission method and system based on semantics and time delay sensitivity, and relates to the technical field of wireless communication and power system automation. A sending end carries out service semantic analysis on a to-be-sent service data stream, determines a minimum semantic integrity condition based on time delay sensitivities corresponding to different service semantics, and splits an original data stream into a plurality of micro data units which can be independently scheduled, independently transmitted and independently reconstructed. The micro data unit is generated without depending on a fixed data frame or a preset packaging length, and directly participates in resource allocation and transmission processes as a minimum scheduling object in a wireless communication system. And the receiving end dynamically reconstructs and processes the received data according to the semantics and dependency information carried by the micro data unit without waiting for the arrival of a complete data frame or complete service data. By means of the mode, the structural time delay in the wireless communication process can be effectively compressed, and the real-time communication performance of key services in a transformer substation is improved.

The present invention belongs to the field of separation and purification technology, and specifically relates to a method for separation and purification of 3-fucosyllactose. The present invention can achieve efficient separation and purification of 3-FL through two crystallization processes by controlling a suitable crystallization temperature, associating the crystallization sugar content with the timing of adding seed crystals twice, and the cooling crystallization rate, so as to obtain a high-quality 3-FL crystalline product. And the method is simple and convenient, more suitable for industrial production, and only simple and conventional pre-treatment steps are required to extract and purify high-quality 3-FL by the method; more widely, the method can be used to extract high-quality 3-FL from a crude 3-fucosyllactose solution prepared by enzymatic method and chemical synthesis method.

The present invention discloses a minimally invasive cranial drilling device for neurosurgery, comprising a holding portion, wherein a screw hole is symmetrically provided on the side of the holding portion, a mounting sleeve is detachably mounted on one side of the screw hole, a threaded hole aligned with the screw hole is provided on the side of the mounting sleeve, a plurality of adapter springs are evenly and equidistantly provided on the lower end of the mounting sleeve in the outer circumferential direction, a fixing sleeve is inlaid and installed on the other end of the adapter spring, and a plurality of accommodating cavities are sequentially provided in the lower part of the interior of the fixing sleeve. The present invention arranges an accommodating cavity, an annular bracket and an arc-shaped guide plate, and utilizes the mutual cooperation of the several, firstly, bone chips pass through the surface of the arc-shaped guide plate and enter into the accommodating cavity, and then are collected by the velvet structure formed by the short hair column and the long hair column, and are adsorbed and temporarily stored, thereby directly avoiding the problem of bone chips generated in the drilling being scattered and causing the surrounding environment to be polluted, and further improving the safety and aseptic requirements in the operation.

The invention relates to the technical field of broadcasting, and provides a public broadcasting system based on an all-optical network, and the system comprises a first conversion module which is used for collecting a sound signal of a current scene, and converting the sound signal into a first optical signal; the second conversion module is used for converting the first optical signal into a first electric signal and processing the first electric signal, and transmitting the processed first optical signal through an all-fiber network to obtain a second optical signal; the first amplification module is used for amplifying the second optical signal to obtain an amplified third optical signal; the signal filtering module is used for processing the third optical signal and filtering a noise signal of the third optical signal to obtain a fourth optical signal; the second amplification module is used for converting the fourth optical signal into a second electric signal and transmitting the second electric signal to power amplification equipment for amplification; and the public broadcast module is used for transmitting the amplified second electric signal to a loudspeaker for broadcasting. According to the invention, the pickup effect and the confidentiality of information transmission can be improved.

The embodiment of the invention provides a mobile terminal data anti-leakage method and device based on quantum security, and the method comprises the steps: encrypting a data request through a built-in quantum security shield of a mobile terminal, and transmitting the encrypted data request to a management and control data platform, the management and control data platform decrypts the encrypted data request through the quantum security shield, receives encrypted response data issued by the management and control data platform, processes the decrypted data request to generate response data, encrypts the response data through the quantum security shield to obtain encrypted response data, and sends the encrypted response data to the management and control data platform; the response data encrypted by the platform is decrypted through the quantum security shield to obtain the response data, so that attack and eavesdropping of an unauthorized third party are avoided in the data transmission process of the mobile terminal, and the security and integrity of the data in the transmission process are ensured.

The present application belongs to the field of information technology and data management, and relates to a two-dimensional code management, service and security guarantee method and device for enterprise level, which comprises the following steps: constructing a unified two-dimensional code management platform, adopting a tree topology structure and a five-layer classification mechanism to uniformly encode and manage two-dimensional codes, and combining a label mechanism to multi-dimensionally define two-dimensional code attributes; performing full life cycle management on two-dimensional codes; configuring the generation, beautification, template customization, printing and interface of providing external services of two-dimensional codes through an API interface; establishing a code analysis system to collect, count, analyze and visualize two-dimensional code usage data; and constructing a code security system through automatic content review, localized deployment, encryption algorithm, API security reinforcement and access control strategy. The present application has good expansibility and adaptability, and can improve operation efficiency and service capability, strengthen data security guarantee and excavate data asset value through centralized, unified and standardized management.

The present invention discloses an expansion check and a fluid delivery control structure with the expansion check, including a fluid delivery pump and a fluid delivery pipe, one end of the fluid delivery pipe is connected to the outlet of the fluid delivery pump, an expansion bag is fixedly installed at the other end of the fluid delivery pipe, the fluid delivery pipe is inserted into the expansion bag, the end of the fluid delivery pipe extends out of the expansion bag, and a variable diameter narrow mouth pipe is provided at the end of the fluid delivery pipe, the two ends of the expansion bag are sealed with the fluid delivery pipe, and a pressure relief opening is opened on the fluid delivery pipe located inside the expansion bag. By installing the expansion check between two fluid containers, the control of the two-way delivery of the fluid medium in the two fluid containers is realized. In the expansion check structure of the present invention, a water pump or a fan is used to increase the pressure of the fluid in the expansion check, so that the expansion bag is deformed to form a partition space at the position where the check is installed, and the purpose of controlling the fluid in the pipeline to be on, off and switch the flow direction is achieved.