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43results about How to "Realize autonomous and controllable" patented technology
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Priority-considered multi-level backup blocking method for attack exception of an industrial control system
InactiveCN109756478AImprove accuracyLow costSubstation remote connection/disconnectionPlatform integrity maintainanceSecurity analysisPower grid
The invention relates to a priority-considered industrial control system attack abnormity multistage backup blocking method. The method comprises the steps of intrusion detection, path reconstruction,blocking decision, rule optimization and the like. The method can effectively improve the network security analysis quality and efficiency of the power grid, guarantees the safe and stable operationof the power grid, can promote the large-scale application of the information security protection technology in each industry, improves the technical level in the field of industrial control security,and achieves the autonomous control of the industrial control security. The method has a certain application value for an existing source network load interaction industrial control system.
Owner:JIANGSU ELECTRIC POWER CO +2
Linux network card driving controller of dual-network redundant Ethernet controller
The invention discloses a Linux network card driving controller of a dual-network redundant Ethernet controller. The Linux network card driving controller comprises a system bus protocol control module, a control status register module, a receiving transmission control module, a receiving data buffer zone, a redundant channel switching control module, and a MAC protocol control module. The systembus protocol control module is configured to receive a system bus and is connected with the control status register module and the MAC protocol control module; the control status register module connected with the receiving data buffer zone and the redundant channel switching control module by the receiving transmission control module is used for receiving and sending a GMII interface signal; andthe MAC protocol control module connected with the control status register module and the receiving transmission control module is used for receiving and sending an MII interface signal through a first PHY management module to realize MAC layer protocol control during data communication. According to the invention, the Linux network card driving controller has the high reliability; and accurate and efficient allocation, utilization and recycling of the memory resource buffer zones and descriptors are realized.
Owner:XIAN MICROELECTRONICS TECH INST
De-centralization root domain name service method and system based on block chain
ActiveCN108616613AAchieve sovereign independenceRealize autonomous and controllableData switching networksDomain nameClient-side
The invention provides a de-centralization root domain name service method and system based on a block chain. The method comprises steps: a block chain-based de-centralization root domain name servicesystem is set, wherein the block chain-based de-centralization root domain name service system comprises N local subsystems and an alliance chain, each local subsystem at least comprises M clients, alocal server cluster and a local root server, and the local server cluster comprises S servers, and the alliance chain comprises a local root server in each local subsystem; in any local subsystem, atop-level domain name change process is executed among any client, the local root server and the alliance chain; a domain name resolution process is executed among any client, the local server cluster and the local root server; and a root server key change process is executed between the local root server and the alliance chain. Thus, the independence of network sovereignty in different countriescan thus be realized without depending on a centralized network node (server), and an autonomous, controllable, equal and interconnected network world is realized.
Owner:BEIJING INFORMATION SCI & TECH UNIV
Terminal WIFI login authentication method and system based on IPK
PendingCN111970699ARealize resource sharingImprove the level of network security protectionKey distribution for secure communicationUser identity/authority verificationData transmissionData security
The invention discloses a terminal WIFI login authentication method and system based on IPK, and belongs to the technical field of WIFI authentication. An existing mode of firstly connecting and thenauthenticating has security holes. According to the authentication method provided by the invention, the terminal to access the network can be permitted to be connected with the wireless internet access module for data transmission only after passing the authentication, so that the authentication method is safer and more reliable that the existing mode of passing the authentication first and thenauthenticating. According to the terminal WIFI login authentication method based on the IPK, the compliance requirement of national security can be met; the network security autonomous controllabilityof the key core area can be realized; a novel lightweight data security system based on the terminal Internet of Things is convenient to establish, a comprehensive refined security strategy is formed, safe and reliable resource sharing is effectively realized, the network security protection level of a public key or an office core area is effectively improved, and effective protection of securitycore data is realized, so that the core benefit of an enterprise can be better guaranteed.
Owner:牛毅
Power data encryption method and device based on chaotic sequence and national cryptographic algorithm
ActiveCN112422271AForecast power informationIncrease randomnessModulated-carrier systemsData stream serial/continuous modificationAlgorithmCiphertext
The invention relates to a power data encryption method and device based on a chaotic sequence and a national cryptographic algorithm. The method comprises the following steps: obtaining power data tobe encrypted and serializing the power data to be encrypted; performing wavelet transformation on the serialized power data to obtain a plurality of high-frequency sequences and a plurality of low-frequency sequences, and marking the high-frequency sequences and the low-frequency sequences as a first sequence and a second sequence respectively; randomly selecting two one-dimensional chaotic mappings, and disturbing the one-dimensional chaotic mappings; combining the original one-dimensional chaotic mapping and the disturbance chaotic mapping, and selecting two candidate chaotic sequences withthe maximum Lyapunov exponent as second chaotic sequences; modulating and combining the first sequence and the second sequence according to the second chaotic sequence, a sampling rate and an SM4 algorithm to obtain a spread spectrum sequence; and performing signature or verification on the spread spectrum sequence by using an SM2 algorithm. According to the method, the randomness and the uniformity of the ciphertext are improved through wavelet transform and the chaotic sequence, and the security of the data is further improved through a cryptographic algorithm.
Owner:HUBEI INFOTECH SYST TECH CO LTD
Super high definition image processing plate
InactiveCN105979166ARealize autonomous and controllableImprove resistance to harsh environmentsTelevision system detailsColor television detailsProcess moduleControllability
The invention discloses a super high definition image processing plate, comprising a power supply, a video pre-processing module and a video processing module; the power supply supplies power to the video pre-processing module and the video processing module; the video pre-processing module receives four-path video inputs from the external and performs conversion and one-grade scaling on the received signal and uniformly converts the video signal to a TTL digital signal; the video processing module is arranged on the output terminal of the video pre-processing module to receive the converted TTL digital signal from the video pre-processing module to perform image processing and then converts the TTL digital signal to an LVDS signal and transmits LVDS signal to an LCD to display. The super high definition image processing plate can solve a big data volume throughout problem, realizes an output synchronization of problem four-path independent input signals, reduces the power consumption, reduces heat productivity, improves capability of a chip to reliably work in a harsh environment where temperature degree is from 55DEG-75DEG, satisfies requirements of military products, and realizes completely autonomous controllability of a high-end display driver.
Owner:HUNAN ZHONGYUE DISPLAY & CONTROL TECH CO LTD
Thermocouple signal processing system and signal processing method thereof
ActiveCN111982329ALow costEasy to operateNuclear energy generationThermometers using electric/magnetic elementsPotential differenceTerminal voltage
The invention discloses a thermocouple signal processing system and a signal processing method thereof, wherein the thermocouple signal processing system comprises a power supply module, a cold end sampling module, a thermocouple, a thermocouple sampling module, a central processing module and a data transceiving module; the power supply module is used for supplying power to all modules in the system; the cold end sampling module is used for sampling the cold end voltage of the thermocouple and sending the obtained cold end sampling voltage to a central processing module; the thermocouple sampling module is used for acquiring the potential difference between two ends of the thermocouple and sending the acquired potential difference to the central processing module; the central processing module is used for calculating to obtain the ambient temperature to be measured based on a thermocouple temperature acquisition principle, and the data transceiving module is used for transceiving a communication message according to a command of the central processing module; the thermocouple signal processing system measures the cold end temperature value and processes the potential difference converted by the thermocouple, and finally the hot end temperature value to be measured is obtained, so that a vehicle-mounted temperature collector is autonomously controllable.
Owner:SOOK AUTOMOTIVE COMPONENTS (JIANGSU) CO LTD
Linux based registry service system and method as well as financial self-service device
ActiveCN105912952AUnified configuration data operationSecure read and writeDigital data protectionDatabase interfaceOperational system
The invention discloses a Linux based registry service system. The system comprises a memory registry construction unit, a registry operation unit and a registry service unit, wherein the memory registry construction unit is used for loading a registry data file in an operation system, reading configuration table data already stored in the registry data file through a database interface and constructing a memory registry in a memory; the registry operation unit is used for collecting node data from a registry editor or a user process and transmitting the node data to the registry service unit; and the registry service unit is used for performing corresponding operation on a node corresponding to the node data in the memory registry according to an operation mode for the memory registry. The invention furthermore discloses a Linux based registry service method and a financial self-service device. Through performing the operation of the node data in the memory registry of the memory, the unified, efficient and secure registry configuration data operation can be provided for all running software and the demand of inter-process data sharing can be met.
Owner:GRG BAKING EQUIP CO LTD
Open system based safe intelligent programmable logic controller and application
ActiveCN109947040ALow costRealize autonomous and controllableProgramme control in sequence/logic controllersOperational systemSoftware system
The invention relates to an open system based safe intelligent programmable logic controller. Consumption type hardware based on open type hardware design realizes a core CPU engine of the controller,traditional programmable logic controller hardware is replaced, and the hardware cost can be reduced; the controller uses a generate Linux operating system instead of a traditional firmware system ofthe programmable logic controller; and a controller program operation software system is realized by open-source software as OpenPLC, so that the controller is intelligent and can be flexibly expanded from basic software and customized. The controller using the general Linux operating system environment is integrated with built-in IPsec VPN to ensure the safety of configuration and communicationprocess between the controller and an engineer station or among controllers, the identity authentication is realized, autonomous controllability in the safety level can be realized on the basis of protection of the national encryption algorithm, and a real safe intelligent programmable logic controller is realized.
Owner:信联科技(南京)有限公司
Baseboard management controller and construction method thereof
InactiveCN110532005ARealize autonomous and controllableBootstrappingArchitecture with single central processing unitOpen sourceSoftware framework
The invention provides a baseboard management controller constructed based on an RISC-V system architecture, and the baseboard management controller comprises a processor, a memory and an external interface, which are connected through an AXI bus. The memory is used for storing an OpenBMC system, and the OpenBMC system is obtained by carrying out cross compiling on an OpenBMC software framework through an RISC-V tool chain of the RISC-V framework. The processor is used for executing the OpenBMC system stored in the memory, and a soft core source code of the processor is generated by a RocketChip generator. A baseboard management controller is constructed through an RISC-V system architecture based on an open source, and an ARM architecture needing authorization is replaced to achieve the baseboard management controller. Therefore, the baseboard management controller used by the user is not limited by a manufacturer any more, and the baseboard management controller used by the user canbe completely autonomously controlled.
Owner:SUZHOU LANGCHAO INTELLIGENT TECH CO LTD
Water search and rescue terminal based on Beidou satellite communication
PendingCN113891261ARealize centralized controlRealize two-way transmissionSatellite radio beaconingRadio transmissionCommunications securityAlarm message
The invention discloses a maritime search and rescue positioning terminal based on Beidou satellite communication, and the terminal automatically gives an alarm when a person falls into water or a ship is in distress. The ship name, personal information, position, time and other help seeking information are automatically sent to a search and rescue center server through the Beidou satellite according to a set period and displayed on an electronic chart, and a search and rescue center can timely organize recent search and rescue power for search and rescue after checking the dangerous situation. The positioning and communication functions of the terminal are completed based on a Beidou communication satellite, domestic autonomous controllability is realized, and the communication safety is guaranteed; in the alarm information sending and receipt receiving process, two-way transmission of search and rescue signals is achieved, and the rescue efficiency is improved; two power-on modes of alarm self-starting and manual starting can be adopted. The system is stable and reliable. The indicating lamp can display the information receiving receipt and flicker to prompt the position of a person, and functions are rich. And the equipment adopts a miniaturized design and is convenient to use.
Owner:NANJING VOCATIONAL UNIV OF IND TECH
Antenna spatial position rapid matching system and method based on matching angle
ActiveCN113221587AImprove matching efficiencyImprove matching accuracySensing by electromagnetic radiationControl cellEngineering
The invention discloses an antenna spatial position rapid matching system and method based on a matching angle. The system comprises an electromagnetic attitude control unit, an electromagnetic signal receiving unit, a strongest receiving direction judgment unit, a spatial position matching judgment unit and a communication instruction control unit. According to the directional diagram angle information of a target antenna and a local antenna, an operator can control the antenna spatial position rapid matching system to change the electromagnetic attitude of the local antenna based on a specified antenna spatial matching angle, so that rapid matching and real-time monitoring of the antenna spatial position are realized; the system and the method can effectively solve the problems of slow operation process progress, low matching precision and the like of long-distance spatial position matching between antennas, greatly improve the spatial position matching efficiency and precision between antennas according to a specified angle, and provide technical support for an electromagnetic environment adaptability irradiation test of radio frequency equipment.
Owner:BEIHANG UNIV
Military electronic flying lapboard
InactiveCN108228530APrevent leakageMeet confidential use requirementsAircraft componentsArchitecture with multiple processing unitsKey pressingOperational system
The present invention belongs to the technical field of embedded computers, and in particular relates to a portable low-power cipherable military electronic flying lapboard. The military electronic flying lapboard is characterized in that: an OMAP processor based on a symmetric multi-processing heterogeneous multi-core system is used to complete application layer data processing, satellite positioning signal solving, display control, audio output / input, power management, receiving and responding to the touch screen and the key signal, data exchange, and other functions, and has relatively lowpower consumption; an open source Android 4.0 or higher operating system is used, and boot encryption software of the system is used to satisfy the functional requirements of the device for boot graphics encryption and password encryption; a flight card template with text, table and picture editing functions is customized according to the military aircraft mission requirement, and the use requirements of pilots for combat, training, reconnaissance, and the like are satisfied; and the user can encrypt and set passwords for the sensitive data according to demand, and a one-click fast data hard self-destructing function can be provided to clear confidential information stored by the user.
Owner:XIAN AVIATION COMPUTING TECH RES INST OF AVIATION IND CORP OF CHINA
Medical electronic contract evidence storage method based on block chain technology
PendingCN112597545AData credible preservationStrengthen supervisionData processing applicationsEncryption apparatus with shift registers/memoriesBlockchainPurchasing process
The invention relates to a medical electronic contract evidence storage method based on a blockchain technology, and the method comprises the steps of sequentially carrying out the editing and fillingof an electronic contract through a medical institution, a distributor and a medicine and medical equipment manufacturer when the electronic contract is built, carrying out the digital signature andelectronic signature through a national cryptography SM2 algorithm, and after all parties sign the electronic contract, uploading the electronic contract to a block chain; and when an authentication demand subsequently exists, calculating a hash value through a national cryptography SM3 algorithm, and comparing the hash value with a pre-stored hash value to confirm whether tampering occurs or not.According to the invention, mutual trust of all parties, contract tampering prevention and credible preservation of data in the medical insurance purchasing process can be ensured, supervision in themedical insurance purchasing process is enhanced, autonomous controllability in the medical insurance purchasing block chain security encryption process is realized, and meanwhile, the problems of paper waste and high operation cost of a traditional medical insurance paper contract can be avoided.
Owner:山西云时代研发创新中心有限公司
Electronic signature system suitable for public key cryptographic technology and supporting commercial cryptographic algorithm
PendingCN114638009AImprove stabilityRun fastRelational databasesDigital data protectionInformatizationNetwork architecture
The invention relates to the technical field of electronic signatures, in particular to an electronic signature system which is suitable for a public key cryptographic technology and supports a commercial cryptographic algorithm. Comprising an infrastructure unit, a user service unit, a signature management unit and a safety protection unit, the infrastructure unit is used for constructing a system network architecture; the user service unit is used for identifying a user and providing a signature service; the signature management unit is used for managing and controlling a signature function; the safety protection unit is used for improving system safety. The design of the invention can be suitable for multiple languages and various document formats, and supports public key cryptography and commercial cryptography algorithms; according to the method, autonomous controllability of information security can be realized, the document is prevented from being counterfeited, tampered and repudiated, and the method is safe and reliable, so that the signature document has enough legal efficacy and high authority; the method can meet the requirements of the user for obtaining and using the electronic signature, guarantees the compliance and data security of the user for signing the file, helps the enterprise informatization transformation, and improves the operation and management efficiency.
Owner:新疆数字证书认证中心有限公司
Server health management chip based on Loongson IP core and implementation method
ActiveCN110569173ARealize autonomous and controllableRealize remote visual monitoringDigital computer detailsHardware monitoringMain processing unitCoprocessor
The invention discloses a server health management chip based on a Loongson IP core and an implementation method, and belongs to the field of chip design. The technical problem to be solved by the invention is how to realize autonomous controllability of the whole chip module. According to the technical scheme, the chip comprises a Loongson main processor, a Loongson coprocessor, an internal bus interconnection module, a high-speed interface module, a low-speed interface module and a video compression engine module. LOONGSON IP cores are adopted as main processing units of the Loongson main processor and the Loongson coprocessor. The Loongson main processor and the Loongson coprocessor are respectively connected with the internal bus interconnection module, and the internal bus interconnection module is respectively connected with the high-speed interface module, the low-speed interface module and the video compression engine module. The invention further discloses a server health management implementation method based on the Loongson IP core.
Owner:SHANDONG CHAOYUE DATA CONTROL ELECTRONICS CO LTD
Medical waste on-site treatment and supervision system based on Internet of Things and block chain
PendingCN112990494ARealize autonomous and controllableReliable dataSustainable waste treatmentData processing applicationsSites treatmentData connection
The invention discloses a medical waste on-site treatment and supervision system based on the Internet of Things and a block chain, and the system comprises a client which is in data connection with a remote central supervision server. The remote central supervision server is in data connection with a medical waste on-site treatment device, an intelligent medical waste collection vehicle, a medical department medical waste classified collection bag and a treated medical waste collection and transfer device through a network communication device, and the remote central supervision server comprises a supervision treatment system. The supervision treatment system comprises an access layer, an SAAS layer, an IAAS layer and a PAAS layer which are connected in sequence. According to the medical waste on-site processing and supervision system based on the Internet of Things and the block chain, intelligent supervision of government competent departments under the conditions of whole-process information security and tamper prevention is realized by applying the Internet of Things and block chain technologies, and hierarchical supervision, hierarchical statistical check, problem tracing and whole-process closed-loop management are realized.
Owner:北京大白鲨环保科技有限公司
Aircraft emergency distress signal monitoring system and monitoring method
ActiveCN112133136AGet location informationRealize all-day real-time monitoringRadio wave reradiation/reflectionAircraft traffic controlDisplay deviceCivil aviation
The invention belongs to the technical field of civil aviation safety guarantee, and particularly relates to an aircraft emergency distress signal monitoring system and monitoring method. The monitoring system comprises a double-frequency signal monitoring device, an information comprehensive processing device and an alarm display device, wherein the double-frequency signal monitoring device can synchronously obtain two kinds of emergency signals and carry out corresponding processing such as decoding and preliminary judgment on the position of an involved aircraft; the information comprehensive processing device can correspondingly process information transmitted by the double-frequency signal monitoring device to obtain information such as the position and the identity of the involved aircraft; and the alarm display device can be used for preprocessing data transmitted by the information comprehensive processing device, including displaying alarm information. According to the aircraft emergency distress signal monitoring system and monitoring method, a localization technical means is provided, all-day real-time monitoring of the emergency signals is realized, the operation weakness of the existing Cospas-Sarsat in a specific scene is effectively supplemented, and the signal acquisition capability of weak signal analysis error codes or incapability of receiving analysis in anelectromagnetic interference environment is improved.
Owner:THE SECOND RES INST OF CIVIL AVIATION ADMINISTRATION OF CHINA
Autonomous controllable multi-system high-precision navigation equipment and navigation method
ActiveCN113075712ARealize autonomous and controllableImprove usabilitySatellite radio beaconingHigh level techniquesComputer hardwareEmbedded system
The invention relates to autonomous controllable multi-system high-precision navigation equipment and a navigation method, and belongs to the technical field of positioning navigation. The system comprises a signal channel module, a channel module, a clock module, a power supply module and an interface module. The power supply module is used for supplying power to each module; the clock module is used for providing a clock reference for the signal channel module and the channel module; the signal channel module is used for performing digital conversion on a GPS signal and a Beidou signal by using different signal channels; and a navigation resolving module is used for carrying out navigation resolving on the GPS signal and the Beidou signal and carrying out navigation positioning based on the GPS signal and the Beidou signal. According to the invention, through dual-system redundancy, the positioning precision is improved; and meanwhile, by optimizing the device, the completely autonomous and controllable full-localization design is realized.
Owner:北京云恒科技研究院有限公司
Autonomously controllable full-localization four-channel digital anti-interference baseband circuit and implementation method
PendingCN111624628ARealize wide voltage input application requirementsTo meet the needs of wide-voltage input applicationsAntenna arraysSatellite radio beaconingComputer architectureLow-pass filter
The invention relates to an autonomously controllable full-localization four-channel digital anti-interference baseband circuit and an implementation method. The baseband circuit comprises an FPGA anti-interference baseband processing circuit, a DC / DC power conversion circuit I, a DC / DC power conversion circuit II, a DC / DC power conversion circuit III, a DC / DC power conversion circuit IV, a DC / DCpower conversion circuit V, an intermediate frequency transformer I, intermediate frequency transformer II, an intermediate frequency transformer III, an intermediate frequency transformer IV, an intermediate frequency transformer V, an A / D analog-to-digital conversion circuit I, an A / D analog-to-digital conversion circuit II, a clock driving circuit, a clock distribution circuit, an SPI NOR FLASHstorage circuit, a D / A digital-to-analog conversion circuit, an RS422 interface circuit, a JTAG interface circuit, an intermediate frequency low-pass filter and an EMI filter circuit are included. According to the circuit, all domestic in-situ or functional substitution of a key core circuit chip is realized, and related requirements of GJB150-1986 are met.
Owner:TIANJIN 764 COMM AIRMANSHIP
Ship trajectory monitoring system based on block chain
ActiveCN114157430AFix unverifiable issuesReduced risk of tamperingUser identity/authority verificationConfidentialityAttack
The invention discloses a ship track monitoring system based on a block chain. The ship track monitoring system comprises a main communication node A0 and n replica communication nodes, the main communication node A0 and the n replica communication nodes form a block chain; the block chain stores AIS information; the replica communication node obtains AIS information from the block chain, and track backtracking query is completed; the invention relates to a ship trajectory monitoring system based on a block chain technology, which mainly solves the problem of accurate backtracking of a channel supervision mechanism on the whole process of a ship moving trajectory, and effectively prevents data missing caused by ship trajectory data tampering and node abnormity. The strong-collisiveness cryptographic algorithm used in the invention ensures the security and confidentiality of the data, the load of all nodes is reduced by using a node marginalization calculation summarization mode, the resource waste is reduced, and hacker attacks can be prevented.
Owner:CHONGQING UNIV
Cigarette logistics distribution center information system based on combined prediction method
PendingCN114266395ARealize autonomous and controllableImprove the level of industry intelligence forecastingForecastingMachine learningLogistics managementIndustry transportation
The invention discloses a cigarette logistics distribution center information system based on a combination prediction method, and the system comprises a cigarette demand combination prediction model: constructing a cigarette combination demand model of a time sequence according to impact factors, and carrying out the logistics demand prediction of a cigarette region; the cigarette industrial and commercial finished product pre-library based on the logistics alliance comprises the following steps: establishing the logistics alliance fused by industrial and commercial enterprises, establishing a site selection mathematical model to determine the longitude and latitude of the optimal site selection according to the principles of lowest cost and optimal service, and establishing an industrial enterprise cigarette finished product pre-library in the region where the optimal site selection is located for storing part of cigarettes with high market requirements. Commercial enterprises provide storage and delivery services for the industry; the intelligent warehouse management system associates electronic tags with cigarette carton information based on the RFID technology, carries out precise intelligent management on cigarettes of different industries in a warehouse, realizes warehouse-in and warehouse-out integration, and is in seamless joint with a first engineering system. According to the method, the industrial transportation efficiency is improved, commercial stockout is reduced, and the sorting and distribution timeliness is enhanced.
Owner:CHENGDU BRANCH OF SICHUAN TOBACCO CO
Universal Programmer and Its Programming Method
ActiveCN109669685BAbundant resourcesRealize autonomous and controllableIntelligent editorsSoftware deploymentComputer hardwarePERQ
Owner:58TH RES INST OF CETC
Low-cost and high-efficiency pollutant and CO2 synergistic absorption-desorption decoupling method
ActiveCN114712989AStable controlGuaranteed Absorption EfficiencyGas treatmentDispersed particle separationPollutantConstrained optimization problem
The invention relates to a low-cost and high-efficiency pollutant and CO2 synergistic absorption-desorption decoupling method, which establishes a pollutant and CO2 synergistic absorption-desorption decoupling control optimization model under different working conditions, and takes low-cost and high-efficiency obtaining of high-purity liquid pollutants and CO2 as an optimization target. An adaptive penalty function is constructed to convert solution of a constrained optimization problem into an unconstrained optimization problem, and real-time, accurate and stable control of parameters is realized; and by means of flue gas pre-washing cooling, multi-stage intermediate cooling, tower top demisting and the like, efficient trapping of pollutants and CO2 is realized. According to the invention, the absorption process and the desorption process are decoupled, and coordinated regulation and control of each stage of temperature-pH-liquid-gas ratio and rich liquid flow-desorption temperature are carried out, so that efficient and low-energy-consumption coordinated capture-regeneration-concentration of pollutants and CO2 is realized, and the high cost of separated operation of an existing flue gas purification system and a carbon capture system is reduced.
Owner:ZHEJIANG UNIV +1
A power data encryption method and device based on chaotic sequence and national secret algorithm
ActiveCN112422271BForecast power informationIncrease randomnessModulated-carrier systemsData stream serial/continuous modificationAlgorithmCiphertext
The invention relates to a power data encryption method and device based on a chaotic sequence and a national secret algorithm. The method includes: obtaining power data to be encrypted and serializing it; performing wavelet transformation on the serialized power data to obtain several high-frequency sequence and several low-frequency sequences, record the high-frequency sequence and low-frequency sequence as the first sequence and the second sequence respectively; randomly select two kinds of one-dimensional chaotic maps, and disturb the one-dimensional chaotic maps; The chaotic map and the perturbed chaotic map are combined, and the two candidate chaotic sequences with the largest Lyapunov exponent are selected as the second chaotic sequence; the first sequence and the second sequence are modulated according to the second chaotic sequence, sampling rate and SM4 algorithm , Composite to obtain the spread spectrum sequence; use the SM2 algorithm to sign or verify the spread spectrum sequence. The invention improves the randomness and uniformity of the ciphertext through the wavelet transformation and the chaotic sequence, and further improves the security of the data through the national secret algorithm.
Owner:HUBEI INFOTECH SYST TECH CO LTD
Micro-stress combined machining method for aero-engine turbine disc mortise
PendingCN114043169AImprove machining accuracyLow costMeasurement/indication equipmentsOther manufacturing equipments/toolsPhysicsParticle flow
The invention relates to a micro-stress combined machining method for an aero-engine turbine disc mortise, which comprises the following steps of: firstly, carrying out linear cutting on a turbine disc blank (2) along a tooth crest datum line of the mortise to form a mortise with a reserved fine trimming size, then carrying out abrasive flow polishing on the mortise with the reserved fine trimming size, and finally, carrying out fine trimming on the mortise with the reserved fine trimming size, and obtaining the mortise with the preset size and surface roughness. According to the turbine disc mortise combined machining process, the machining precision is high, the broaching procedure is omitted, a broach is not needed, the machining cost is greatly reduced, meanwhile, linear cutting is stress-free machining, the problem that the final tenon tooth size is difficult to guarantee due to large stress generated during broaching is solved, and the machining size precision requirement of the turbine disc mortise is guaranteed. And meanwhile, a recast layer and a heat affected zone which are left on the surface of a workpiece through linear cutting machining are removed through abrasive particle flow, and the service life of the turbine disc is guaranteed.
Owner:AVIC BEIJING INST OF AERONAUTICAL MATERIALS
A blade device with high performance and low power consumption
ActiveCN109283981BRealize switching interconnectionSolving Bandwidth LimitationsDigital processing power distributionEnergy efficient computingWorking environmentKnife blades
Owner:重庆秦嵩科技有限公司
A fast matching system and method for antenna spatial position based on matching angle
ActiveCN113221587BImprove matching efficiencyImprove matching accuracySensing by electromagnetic radiationFar distanceControl cell
Owner:BEIHANG UNIV
A blockchain-based decentralized root domain name service method and system
ActiveCN108616613BAchieve sovereign independenceRealize autonomous and controllableData switching networksDomain nameDistributed computing
Owner:BEIJING INFORMATION SCI & TECH UNIV
A multi-channel constant current source used for calibration of high-precision if conversion module
ActiveCN109341722BImprove calibration efficiencyRealize autonomous and controllableElectrical measurementsHemt circuitsComputational physics
The invention relates to a multi-channel constant current source used for the calibration of a high-precision IF conversion module, comprising a controller and four groups of independent outputs. The third and fourth groups both output ‑1,‑2,‑4,‑10,‑15mA five-speed currents; the five-speed currents of the above-mentioned groups are automatically switched, and the five-speed currents output by different groups They can not be switched, and the controller controls the strobe of four groups of constant current sources; each group of constant current sources is composed of a positive constant current source, a negative constant current source and a single group of switching circuits. The invention can replace the imported reference source and realize the calibration of the high-precision IF conversion module, which not only realizes independent controllability, but also greatly improves the calibration efficiency of the IF conversion module.
Owner:TIANJIN NAVIGATION INSTR RES INST
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