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81results about How to "Improve isolation ability" patented technology
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Data isolation method used in storage cloud
ActiveCN102307185AAchieve sharingEnsure moderate isolationDigital data protectionTransmissionRole PrivilegeSecurity policy
The invention relates to a data isolation method used in storage cloud, and belongs to the distributed storage field. The data isolation method comprises the following steps: (1) according to security demands of an organization, establishing security policy configuration of a tenant in master nodes of a storage cloud system; (2) establishing a user subject belonging to the organization and stamping role tags in a role model of the organization for the subject; (3) organizing an administrator to stamp the tags in the Tag model of the organization for an accessed resource object established by certain user in the organization; (4) according to role privileges of accessed resources, setting a security access policy of a role subject for the accessed resource object and storing the security access policy in the master nodes of the storage cloud system; and (5) according to the security access policy, judging whether the role subject passes the access to the accessed resource object by the master nodes, executing the access if yes and refusing the access if no. The data isolation method has the beneficial effects that the appropriate data isolation is ensured in a cloud-stored enterprise, and the adopted policy follows a universality principle, thus being applicable to public cloud, private cloud and mixed cloud.
Owner:PEKING UNIV
Comprehensive control method for high-power efficient energy consuming high-frequency switching power supply
ActiveCN102255529ARealize self-balancing current controlRealize constant voltage and constant current outputAc-dc conversionDc-dc conversionFull bridgeLow voltage
The invention discloses a comprehensive control method for a high-power efficient energy consuming high-frequency switching power supply. The high-power efficient energy consuming high-frequency switching power supply comprises a three-phase current inverter and a high-frequency DC / DC (Direct Current to Direct Current) converter, wherein the high-frequency DC / DC converter consists of a single-phase full-bridge inverter, a high-frequency coupling transformer and a low-voltage rectifier which are connected in series in sequence; the input end of the three-phase current inverter is connected with a group of three-phase capacitors connected in a Y form, and is connected with a power grid through a three-phase inductor L; and the three-phase current inverter is connected with the single-phase full-bridge inverter of the high-frequency DC / DC converter. According to the method, quick response of a system is realized, change of a load is tracked quickly, efficient power consumption of the system is realized, and the voltage and current distortion factors of the system are decreased.
Owner:HUNAN UNIV
Network function virtualization platform based on container
ActiveCN111522653AFlexible Pack SteeringImprove isolation abilityResource allocationData switching networksVirtualizationComputer network
Owner:HUAZHONG UNIV OF SCI & TECH
Polyurethane elastic fiber finishing agent
InactiveCN101666040AGood sealing and anti-sticking effectUniform sealing and anti-stick effectFibre typesAlcoholPhosphate
The invention discloses a polyurethane elastic fiber finishing agent, comprising the following components in parts by weight: 75.0-98.8 parts of at least one substrate selected from silicon oil and white mineral oil, 1.0-10.0 parts of isomerous high-carbon alcohol, 0.1-10.0 parts of MQ silicon resin of which the pour point is smaller than or equal to 100 DEG C and 0.1-5.0 parts of trisiloxane polyether organic phosphate. The finishing agent enables the polyurethane elastic fiber to have favorable antistatic property, lubricating property and grating balancing property in the filament reeling process, so that the polyurethane elastic fibers reeling at high speed have stable tension and do not skid or cause the filament roller to mess up, thereby endowing the polyurethane elastic fibers withfavorable reeling property. The finishing agent also enables the polyurethane elastic fibers rolled on the roller to have enduring anti-adhesion insulation property, so that the polyurethane elasticfibers have favorable cocoon reelability and thorough root unreeling property in the downstream unreeling process, thereby endowing the polyurethane elastic fibers with favorable unreeling property.
Owner:HUAIAN KAIYUE TECH DEV
Network isolation method and device for container instances in same container cluster
PendingCN111934918AImprove isolation strengthSolve technical problems with low isolation strengthData switching networksEngineeringReal-time computing
The invention relates to a network isolation method and device for container instances in the same container cluster. The method comprises the steps that under the condition that a first creation request initiated by a target tenant is detected, a virtual interface of a target network space is created, the first creation request is used for requesting creation of a target container instance, and the target network space is a network space corresponding to the target tenant; target address information of the virtual interface is obtained; target network equipment is created by using the targetaddress information, wherein the address information of the target network equipment is the target address information, and the target network equipment is used as an instance network card of the target container instance. According to the method and the device, the technical problem of relatively low network isolation strength among the container instances in a cluster for deploying the containerinstances in related technologies is solved.
Owner:BEIJING KINGSOFT CLOUD NETWORK TECH CO LTD
Method for realizing user isolation under online programming environment
InactiveCN105808240AImprove scalabilityRealize thermal expansionPlatform integrity maintainanceSpecific program execution arrangementsOperational systemFile system
The invention discloses a method for realizing user isolation in an online programming environment. Set up a server cluster, use the docker container engine to remotely start the mirror, and each user corresponds to a mirror. Start on use, stop on exit. Use docker swarm to manage docker clusters, use nfs to save files, and implement multiple nodes to access the same file system to save user files. Each user has a unique folder, which is mounted when the container starts. Through the above method, the present invention enables multiple user spaces to be isolated to share one operating system, breaks the limitation that one operating system can only have one programming environment, and realizes the function of starting multiple programming environments by one operating system. And it can be deployed and hot-scaled simply and quickly.
Owner:北京量邦信息科技股份有限公司
Battery jar and battery cover hot runner plastic mold for storage battery
PendingCN108638446AWon't happenAvoid it happening againDomestic articlesHot runnerTemperature control
The invention discloses a battery jar and battery cover hot runner plastic mold for a storage battery. The mold comprises a mold main body; a heating system is arranged inside the mold main body; anda movable interface is arranged in the mold main body and is fixedly connected to the mold main body through screws. The battery jar and battery cover hot runner plastic mold for the storage battery adopts a hot runner plastic mold, a temperature control cabinet is arranged and has the over-high temperature warning function and the automatic adjusting function, the temperature in an integral hot runner system can be effectively adjusted through the temperature control cabinet, so that the temperature change of a solution body can be controlled within the required precision range, raw materialsremaining inside the mold cannot be cooled and can be prevented from being crushed by crushing equipment again, no dust can be generated on a production site, occupational injuries to staff can be avoided, environmental pollution can be avoided, and therefore the environmental protection effect can be achieved.
Owner:苏州优耐富自动化设备有限公司
A kind of organosilicon separating gel and its preparation method and application
ActiveCN101570637BWide viscosity rangeHigh flash pointBiological testingBlood Collection TubeSilanes
The invention discloses an organosilicon separating gel, its preparation method and application. The silicone separating gel is made of the following components in parts by weight: 54-82 parts of organopolysiloxane; 4-15 parts of hydroxyl silicone oil; 10- 25 parts; 1-6 parts of silane coupling agent. The preparation method of the organosilicon separating gel is to mix the components uniformly, heat up to 60-116°C, stir and keep warm for 5-12 hours, and then vacuumize at 120-180°C for 1-6 hours to obtain the organosilicon separating gel. glue. The application of the organosilicon separating gel is to prepare a rapid blood collection tube with serum separating gel. The organosilicon separating gel provided by the invention is hygienic, safe, non-toxic, strong in isolation, good in liquid sealing, and has superior thixotropic performance. The invention provides a method for preparing organic silicon separating gel, which has simple process, mild and controllable preparation conditions, and is easy to popularize.
Owner:广州标美药用辅料有限公司
Microbial capsule for tailing remediation and three-in-one tailing in-situ remediation method
ActiveCN113025606APrevent penetrationTo achieve the role of adsorption and isolation of pyriteSolid waste disposalOn/in inorganic carrierMicroorganismMicrobial agent
The invention discloses a microbial capsule for tailing remediation and a three-in-one tailing in-situ remediation method. In the prior art, the operation and maintenance cost of acid wastewater treatment is high, the duration time is long, and the treatment effect is unstable. The invention provides a microbial capsule for tailing restoration. The microbial capsule comprises a porous calcium carbonate ball and a microbial agent loaded on the porous calcium carbonate ball. The microbial capsule can effectively inhibit the oxidation of sulfide minerals, and the microbial inoculum is not easy to lose. According to the separation layer, modified environmental minerals and metal ions are combined together, and a modified environmental mineral-metal combination is used as a separation substance, so that acidic wastewater formed after sulfide in an upper-layer tailing pond is oxidized can be prevented from permeating to a lower layer; and air on the upper layer is prevented from entering the bottom layer to oxidize sulfide minerals. On the basis, the isolation layer not only achieves the effect of adsorbing and isolating the pyrite, but also can oxidize sulfide minerals on the mineral surface layer through metal ions.
Owner:ZHEJIANG UNIV OF TECH
Virtual machine-based dynamic introspection function-level virtual machine kernel detection system and method
ActiveCN108469984AAnalytical integrityIntegrity checkSoftware simulation/interpretation/emulationControl flowVirtual machine introspection
The invention discloses a virtual machine-based dynamic introspection function-level virtual machine kernel detection system and method, and belongs to the field of cloud safety. The device compriseshardware which is used for providing hardware basis for a secure virtual machine, a target virtual machine and a virtual machine management layer; the secure virtual machine comprises a monitoring framework; the secure virtual machine interacts with the target virtual machine through the virtual machine management layer; the virtual machine management layer comprises a connection extraction module; and the extraction module is connected with each of the learning module and a monitoring module through page execution information. The method comprises the following steps of: starting a monitor, injecting a monitoring point to the target virtual machine by the extraction module, so as to ensure that the virtual machine management layer can monitor sub-functions in calling; carrying out staticanalysis by utilizing a static memory analysis method and dynamic tracking, so as to obtain subsequent sub-functions and carry out monitoring; and carrying out loop execution until system calling is returned. According to the system and method, execution information is modeled through three learning methods, so that integrity of kernel control flows is detected, and the kernel control flows are prevented from being detected and broken through by attackers.
Owner:HARBIN INST OF TECH +1
Storage battery partition plate and pregnant solution type storage battery
PendingCN106340606AIncrease liquid absorptionFast liquid absorptionFinal product manufactureCell component detailsFiber structureOxygen compound
The invention discloses a storage battery partition plate and a pregnant solution type storage battery. The partition plate is of a multi-component fiber structure and is formed by processing glass fibers and hydrophobic PE fibers of various diameters and lengths. The PE fiber content of an upper layer and a lower layer of the vertical section structure of the partition plate is the same and is lower than that of an intermediate interlayer. A bag type structure partition plate is adopted for the pregnant solution type storage battery. The storage battery partition plate can have the advantages that a PE partition plate and an AGM partition plate are small in pore diameter and low in resistance and easily made into a bag type, and it can be guaranteed that the pregnant solution type storage battery has good low temperature discharge performance, oxygen compound efficiency and cost performance.
Owner:SHANDONG SACRED SUN POWER SOURCES
Communication transfer electric control boards, household appliance and household appliance control system
The invention provides communication transfer electric control boards, a household appliance and a household appliance control system. A communication transfer electric control board comprises an interface circuit which is used for accessing a Wi-Fi communication module and carrying out data instruction interaction with the Wi-Fi communication module, wherein a data instruction is configured as aninstruction capable of being analyzed by the Wi-Fi communication module; and a control circuit which is used for converting the data instruction and a control instruction, wherein the control instruction is configured as the instruction capable of being performed by the household appliance, and the control instruction is also configured to feed back an operation state of the household appliance.The data instruction sent by the Wi-Fi communication module is transmitted to the household appliance through the interface circuit and the control circuit in sequence. The control instruction sent bythe household appliance is transmitted to the Wi-Fi communication module through the control circuit and the interface circuit in sequence. Through application of the technical scheme provided by theinvention, a conventional air conditioner can be modified with low cost in the short term, the air conditioner is enabled to have a Wi-Fi communication function, a communication mode is expanded, andcommunication reliability and use experience are improved.
Owner:WUHAN REFRIGERATION EQUIP OF MIDEA GROUP +1
Gastric soluble compound seaweed polysaccharide film coating premix and liquid preparation method adopting same
InactiveCN102579391AImprove moisture resistanceImprove isolation abilityPharmaceutical delivery mechanismDietary fiberMolecular materials
The invention provides a gastric soluble compound seaweed polysaccharide film coating premix and a liquid preparation method adopting the same. The premix comprises the following raw materials in parts by weight: 0.5-25 parts of seaweed polysaccharide gum, 75-98 parts of plant and dietary fibers, 0-5 parts of plasticizing agent and 0-5 parts of other auxiliary components. The specific liquid preparation method comprises the following step: heating a solvent with weight being 8-25 times that of the raw materials to a temperature above 55 DEG C, adding a raw material mixed in advance while stirring after reaching the temperature, stirring the materials until the materials are uniform, then reducing the temperature to 43-55 DEG C and keeping the constant temperature for 10-40 minutes, thus obtaining film coating liquid. The premix and the liquid preparation method have the following beneficial effects: the main raw material used by the premix is the safe and cheap natural polymer material-seaweed polysaccharide gum; the obtained coating has good applicability; and various indexes conform to the specifications in the current version of Pharmacopeia of the People's Republic of China after the coating is used.
Owner:BEIJING IMPERIAL ISLAND MARINE BIOLOGICAL TECH
Organic silicon separation gel and preparation method and application thereof
ActiveCN101570637ARapid Biochemical Analysis DetectionImprove quality controlBiological testingGas phaseSilicone oil
The invention discloses an organic silicon separation gel and a preparation method and application thereof. The organic silicon separation gel is prepared from the following components by weight portion: 54 to 82 portions of organopolysiloxane, 4 to 15 portions of hydroxy silicone oil, 10 to 25 portions of gas phase method silicon dioxide subjected to hydrophobization treatment by the silicoorganic compound and 1 to 6 portions of silane coupling agent. The preparation method of the organic silicon separation gel comprises the following steps: evenly mixing the components; increasing the temperature to between 60 and 116 DEG C; stirring the mixture and maintaining the temperature for 5 to 12 hours; carrying out vacuuming on the mixture for 1 to 6 hours at a temperature of between 120 and 180 DEG C; and obtaining the organic silicon separation gel. The application of the organic silicon separation gel is that the gel is used for preparing a rapid blood collecting tube containing serum separation gel. The organic silicon separation gel provided by the invention has the advantages of sanitation, safety, no toxicity, strong isolation property, good liquid seal property and excellent thixotropic property. The preparation method of the organic silicon separation gel has simple preparation method and process, mild and controllable preparation condition and is easy to popularize.
Owner:广州标美药用辅料有限公司
Rubber sheet isolating agent
The invention provides a rubber sheet isolating agent. The rubber sheet isolating agent is prepared from the following raw materials in parts by weight: 30-50 parts of bentonite, 10-30 parts of silicafume, 10-30 parts of light calcium carbonate, 5-10 parts of zinc oxide, 3-5 parts of fumed silicon oxide, 13-30 parts of fatty acid derivative, 4-6 parts of a surfactant, 0.6-1 part of an organic silicone solid defoamer and 0.2-0.3 part of drier. According to the rubber sheet isolating agent, the isolation effect is outstanding, the stack sticking phenomenon of rubber materials is well controlled, and rubber sheets still has excellent isolation effect for being stacked more than one month; the rubber sheet isolating agent can be widely used in the isolation of different types of rubber sheets, so that the rubber sheets do not bond with one another, and various properties of rubber can be maintained; and the manufacturing process is simple, use amount is low, the isolation ability is high,and the rubber sheet isolating agent is especially suitable for isolation of high-viscosity rubber sheets such as bromobutyl rubber.
Owner:建平天正矿业有限公司
Bidirectional interlayer isolation well with low power consumption and high reliability
PendingCN109494247AHighlight substantive featuresSignificant progressSemiconductor devicesEngineeringHorizontal and vertical
The present invention provides a bidirectional interlayer isolation well with low power consumption and high reliability. The bidirectional interlayer isolation well comprises a substrate and a longitudinal isolation well region and a first buried layer arranged on the substrate, the first buried layer is arranged around the longitudinal isolation well region, the longitudinal isolation well region is provided with a first well region and a transverse isolation well region, the transverse isolation well region is arranged around a first well region, a second well region is arranged on the first buried layer and arranged around the transverse isolation well region, the first well region, the transverse isolation well region and the second well region commonly form two transverse PNP structures, the first well region, the longitudinal isolation well region and the substrate commonly form two longitudinal PNP structures, when the first well region encounters a high voltage, the two transverse PNPs and the two longitudinal PNPs cannot be subjected to amplification and bias due to the same-potential arrangement of the transverse isolation well region so as to effectively weaken the leakage currents in horizontal and vertical directions. The bidirectional interlayer isolation well with low power consumption and high reliability is scientific in design, high in isolation, low in reverse leakage and high in reliability.
Owner:WUXI LINLI SCI & TECH CO LTD
Docker-based data acquisition method and device, computer equipment and storage medium
InactiveCN110457555ASave resourcesAchieve on-demand growthWeb data indexingSoftware simulation/interpretation/emulationData acquisitionSystem stability
The invention belongs to the technical field of big data, and relates to a Docker-based data acquisition method and device, computer equipment and a storage medium. The method comprises the steps of obtaining a data acquisition task, and sending a mirror image of a crawling program container to at least one cloud server according to the data acquisition task; generating at least one crawling program container in each cloud server according to the mirror image of the crawling program container, wherein a crawling program runs in the crawling program container to become a crawling node; and sending the data acquisition task to the crawling node, and executing data acquisition operation on the data acquisition task through the crawling node. According to the scheme provided by the invention,a Docker technology is adopted to send the crawling program container mirror image to at least one cloud server, a plurality of crawling nodes can be automatically deployed in the same cloud server, the occupied system resources are few, the cloud server resources can be effectively utilized, the crawling nodes can be increased as required, the isolation among the crawling nodes is high, and the system stability is good.
Owner:PINGAN INT SMART CITY TECH CO LTD
High-power simplified electrolytic and electroplating high-frequency switch power supply and control method thereof
ActiveCN102223090BQuick responseImprove work efficiencyAc-dc conversion without reversalDc-dc conversionCapacitanceElectrolysis
Owner:HUNAN UNIV
Protective device for diseases of respiratory system
ActiveCN111956411AEasy to disinfectDisinfect thoroughlyDispersed particle filtrationTransportation and packagingDiseaseSick person
The invention relates to the technical field of medical appliances and discloses a protective device for diseases of a respiratory system. Problems of the existing devices that patients will suffer from mutual cross infection, doctors will be infected, transferring of the patients is labor-consuming, and disinfection of sickbeds is incomplete are effectively solved. A technical scheme is as follows: a headstock and a tailstock are arranged at the two ends of a bed body, a hand-operated lead screw is arranged between the headstock and the tailstock, transmission worm wheels are arranged at theheadstock and the tailstock, circular sliding grooves are formed in the headstock and the tailstock, two quadrantal arc plates which are arranged between the headstock and the tailstock are connectedinto the circular sliding grooves in a sliding manner, and transmission gears which are rotatably connected to the headstock and the tailstock are engaged with inner rings of the arc plates and are connected with the transmission worm wheels separately through belt transmission structures and reversing transmission structures. The protective device has a very powerful isolating effect on the patients and achieves a protective action on cross infection risk of the patients, the risk that medical personnel are infected when the medical personnel perform treatment on epidemic patients is avoided,and the protective device has very high practicability and very high functionality.
Owner:HENAN PROVINCE HOSPITAL OF TCM THE SECOND AFFILIATED HOSPITAL OF HENAN UNIV OF TCM
Isolation treatment device for nuclear radioactive waste
InactiveCN110689990AImprove the isolation effectImprove isolation abilityRadioactive decontaminationEngineeringRadioactive waste
The invention discloses an isolation treatment device for nuclear radioactive waste. The isolation treatment device comprises a machine body, wherein a working cavity with an upward opening is formedin the machine body; the left side and the right side of the machine body are provided with communicating cavities, cavities and sliding cavities which are opened towards the working cavity; the cavities are positioned below the communicating cavities; the sliding cavities are positioned below the cavities; a supporting plate is rotationally arranged in each communicating cavity; the top surface of the supporting plate can be used for temporarily supporting and storing radioactive waste; and rotating wheels are rotationally arranged in the cavities. By means of the isolation treatment device for nuclear radioactive waste, the isolation effect of nuclear radioactive waste during disposal can be effectively improved; radioactive influence on a surrounding environment when the nuclear radioactive waste is discarded and buried is effectively reduced; double protection is added, so isolation effect is higher; and an automation degree is high, and manual direct contact operation is not needed.
Owner:SHENGZHOU TUBAI POWER GENERATION TECH CO LTD
Intelligent displayer frame paint repairing and spraying device
PendingCN108031580APromote withdrawalEasy to paintLiquid spraying apparatusEngineeringMechanical engineering
The invention discloses an intelligent displayer frame paint repairing and spraying device which comprises a base plate. The base plate comprises an integrated circuit board, a base plate body and a rotating shell. The base plate body is arranged at the bottom end of the base plate. The rotating shell is connected to the side end face of the base plate body in a rotating mode. The integrated circuit board is fixedly connected to the middle position of the upper end face of the base plate body. The upper end face of the base plate is fixedly connected with a side plate. The side plate comprisesa top plate body, a buckling groove and side plate main bodies. The side plate main bodies are arranged at the two sides of the side plate. The top plate body is connected to the inner end faces of the side plate main bodies in a sliding mode. The buckling groove is formed in the upper end face of the top plate body. The upper end face of the side plate is connected with the top plate in a sliding mode. According to the intelligent displayer frame paint repairing and spraying device, a protection cover is arranged to protect a display screen, a switch and the like of the device, and the service life of the device is prolonged; and due to arrangement of an integrated circuit groove, internal circuits can be managed, and overhaul of the device is facilitated.
Owner:厦门市晨达伟业工贸有限公司
Two-component water-based epoxy coating as well as preparation method and application thereof
ActiveCN108165128AImprove stabilityImprove environmental performanceAntifouling/underwater paintsPaints with biocidesIonCoating
The invention discloses a two-component water-based epoxy coating as well as a preparation method and application thereof. The two-component water-based epoxy coating includes an A component and a B component, wherein the A component comprises the following materials in parts by mass: 20-36 parts of deionized water, 1-4 parts of auxiliary agent 1, 22-50 parts of a pigment filler, and 25-40 parts of a water-based epoxy curing agent; and the B component comprises the following materials in parts by mass: 10-40 parts of deionized water, 0.8-2 parts of auxiliary agent 2, and 50-90 parts of self-prepared water-based epoxy resin. The two-component coating provided by the invention can meet needs of interior decoration, can be used as a water-based epoxy wall surface paint, has a good anti-fouling effect and strong isolation, and can meet high-cleanness decoration requirements.
Owner:GUANGZHOU LEOBO PAINT TECH
Low-surface-energy paint with hydrophobic self-cleaning function
Owner:荆门市鑫福瑞交通安全设施有限公司
Passive isolation sampling circuit for output direct current of three-phase rectifier bridge
InactiveCN102497118AImprove isolation abilityAvoid high pressureAc-dc conversion without reversalShunt DeviceFiltration
The invention relates to a passive isolation sampling circuit for the output direct current of a three-phase rectifier bridge. The output direct current of the conventional three-phase rectifier bridge is sampled by a current divider, so that interference over the transmission of a signal line is easily produced. A three-phase rectifier bridge output circuit rectifies three-phase alternating current into direct current, and the direct current is transmitted to a load through a direct current filter reactor. The heavy three-phase alternating current is converted into alternating current signal voltage with low amplitude through an incoming current transformer and a current conversion resistor, and the three-phase alternating current signal voltage is converted into direct current signal voltage through a signal rectifier bridge by adopting a Y connection method. The amplitude of the direct current signal voltage completely corresponds to the direct current according to a certain sampling proportional relationship, the amplitude of the direct current is correspondingly displayed by a parallel direct current voltmeter, and the output of the signal rectifier bridge is connected in parallel with a capacitor for filtration. The Y connection method is adopted for independent sampling, so that an isolation property is high; and the sampling circuit is not required to be connected with a major loop, so that high voltage influence is avoided, loss and heat are reduced, and sampling safety and convenience are ensured.
Owner:杭州四达电炉成套设备有限公司
Zero-crossing detecting device and detecting method based on electromagnetic induction
InactiveCN109061277AImprove anti-interference abilityImprove isolation abilityCurrent/voltage measurementAC powerElectromagnetic induction
The invention provides a zero-crossing detecting device based on electromagnetic induction, comprising an alternating current power supply to provide an alternating current signal; an electromagneticinduction unit converting alternating current electrical signal into a low-voltage alternating current signal. The input end of the electromagnetic induction unit is arranged close to the alternatingcurrent power supply load wire;the output end of the electromagnetic induction unit is connected with the input end of the AC signal amplifying unit; the AC signal amplifying unit amplifies and outputs the positive half-wave signal of the low-voltage AC signal, and the output end is connected with the input end of the zero-crossing comparison unit; the zero-crossing comparison unit compares the amplified low-voltage AC signal with the zero-crossing detection signal, outputs a zero-crossing signal, and outputs the signal to the microprocessor; and the microprocessor determines the zero-crossingpoint of the AC signal based on the zero-crossing signal. The invention has the advantages of simple circuit and low cost, and does not need to isolate the output unit circuit, and only needs the electromagnetic induction unit and the zero-crossing comparison unit to realize the zero-crossing detection of the high-voltage AC power source, and can track the zero-cross point in real time when the load fluctuates sharply.
Owner:NANJING PANDA ELECTRONICS MFG
Data isolation method used in storage cloud
ActiveCN102307185BGuaranteed isolation effectEnsure moderate isolationDigital data protectionTransmissionRole PrivilegeSecurity policy
The invention relates to a data isolation method used in storage cloud, and belongs to the distributed storage field. The data isolation method comprises the following steps: (1) according to security demands of an organization, establishing security policy configuration of a tenant in master nodes of a storage cloud system; (2) establishing a user subject belonging to the organization and stamping role tags in a role model of the organization for the subject; (3) organizing an administrator to stamp the tags in the Tag model of the organization for an accessed resource object established by certain user in the organization; (4) according to role privileges of accessed resources, setting a security access policy of a role subject for the accessed resource object and storing the security access policy in the master nodes of the storage cloud system; and (5) according to the security access policy, judging whether the role subject passes the access to the accessed resource object by the master nodes, executing the access if yes and refusing the access if no. The data isolation method has the beneficial effects that the appropriate data isolation is ensured in a cloud-stored enterprise, and the adopted policy follows a universality principle, thus being applicable to public cloud, private cloud and mixed cloud.
Owner:PEKING UNIV
Covering structure for extremely-low-radioactivity solid waste landfill
PendingCN112211231APrevent infiltrationAvoid pollutionProtective foundationHolding tankSurface water
The invention discloses a covering structure for an extremely-low-radioactivity solid waste landfill. The covering structure comprises an isolating layer, an impermeable layer, a drainage layer and agreening soil layer; gaps between sealed storage tanks filled with extremely-low-radioactivity solid waste and gaps at the peripheries of the sealed storage tanks are filled with the isolating layer,and the isolating layer covers the tops of the sealed storage tanks filled with the extremely-low-radioactivity solid waste, so that the extremely-low-radioactivity solid waste after landfill is prevented from being diffused after leakage; the impermeable layer covers the isolation layer and is used for preventing surface water from permeating into the isolation layer; the drainage layer covers the impermeable layer and is used for guiding and draining water blocked by the impermeable layer out of a landfill area; and the greening soil layer covers the drainage layer and is used for planting vegetation. The covering structure is applied to final coverage of the extremely-low-radioactivity solid waste landfill, pollution of the extremely-low-radioactivity solid waste to the surrounding environment is avoided, and convenience is provided for subsequent development and utilization of the landfill and nearby land.
Owner:BEIJING GEOENVIRON ENG & TECH
Current source power supply circuit for weak current system
InactiveCN102223087AImprove isolation abilityImprove stabilityAc-dc conversion without reversalConversion without intermediate conversion to dcInductorWeak current
The invention relates to a current source power supply circuit for a weak current system. The conventional power supply technology for the weak current system mainly adopts a voltage source power supply mode. In the current source power supply circuit for the weak current system, primary sides of a plurality of current transformers are connected in series; one end of the first current transformer is connected with a 220V mains supply; one end of the last current transformer is connected with one end of a current-stabilizing inductor; the other end of the current-stabilizing inductor is connected with the 220V mains supply; the primary side of each current transformer is connected with a pair of diodes connected in parallel forwardly and reversely to prevent open-circuit over-voltage; a secondary side of each current transformer comprises a rectifier bridge, a voltage-stabilizing tube and a filter capacitor; a negative electrode of the voltage-stabilizing tube is connected with one output end of the rectifier bridge, and a positive electrode of the voltage-stabilizing tube is connected with the other output end of the rectifier bridge; and the positive electrode of the filter capacitor is connected with one output end of the rectifier bridge, and the negative electrode of the filter capacitor is connected with the other output end of the rectifier bridge. The current source power supply circuit for the weak current system is simple in structure and stable in output.
Owner:杭州四达电炉成套设备有限公司
Intelligent city electricity generation converter cabinet
ActiveCN103247938AEasy to manageEasy to superviseBoards/switchyards circuit arrangementsSubstation/switching arrangement cooling/ventilationElectric power systemEngineering
The invention discloses an intelligent city electricity generation converter cabinet which comprises a cabinet body, a cabinet door, a city electricity generation conversion control circuit, a mains supply disconnection control assembly and an electricity generation disconnection control assembly. The converter cabinet is ingenious and reasonable in structural design, high in automation degree, easy to operate and totally intelligentized, can convert the mains supply and the electricity generation automatically, guarantees normal power consumption, and doesn't need guard of an electrician or a relevant operator on duty; besides, an intelligent digital display ampere meter and an intelligent digital display voltmeter are provided, so that current and voltage can be measured automatically with high accuracy, and the values of the current and the voltage are directly displayed by a nixie tube or liquid crystal; and the converter cabinet has the advantages of direct display, high accuracy, stable performance, high isolation and vibration and the like, a plurality of expansion functions including RS485 communication, on-off input, on-off output, analog quantity transmitting output and the like can be matched, multiple functions can be realized, different use requirements can be met, and the cabinet can be popularized and applied widely, and is suitable for an electric power system, petrochemical engineering, industrial and mining enterprises, civil architecture and the like.
Owner:广东亚欧电气科技有限公司
Medical isolation shoe cover and manufacturing method thereof
PendingCN111528576AAvoid enteringPlay a protective effectSolesHeelsEngineeringMechanical engineering
The invention relates to a medical isolation shoe cover and a manufacturing method thereof. The medical isolation shoe cover comprises a shoe sole, a vamp arranged on the shoe sole and a leg sleeve integrally formed with the vamp. The sole, the vamp and the leg sleeves are made of waterproof and anti-leakage materials; an upper elastic band is arranged on the top edge of the leg sleeve, and a lower elastic band is arranged at the joint of the vamp and the leg sleeve; the shoe sole comprises a shoe sole surface, a shoe sole lining and more than one wear-resistant layer arranged between the shoesole surface and the shoe sole lining, is not easy to damage when being worn, is convenient to integrally put on and take off, is not easy to fall off, can meet the daily use and wearing requirementsof medical staff, has a strong isolation effect, and is convenient to process and high in production efficiency by adopting the manufacturing method.
Owner:JIHUA 3502 PROFESSIONAL GARMENT
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