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319results about How to "Achieve redundancy" patented technology
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Method and apparatus for achieving transparent redundancy at a hierarchical boundary
InactiveUS7269132B1Achieve redundancyIncrease elasticityError preventionFrequency-division multiplex detailsTraffic volumeMajor and minor
Transparent redundancy may be achieved at a MPLS-MPLS hierarchical boundary or a BMA-MPLS hierarchical boundary by utilizing local repair mechanisms extant in each domain to select automatically the same boundary network devices as the primary and secondary boundary network devices. In the MPLS domain, two LERs advertise the ability to forward traffic to a phantom LER and map all traffic originated into that domain as having been on a path originating at the phantom LER. This will cause the LERs to appear as being one hop away from the phantom LER, causing MPLS to assume the real LERs are part of a LSP terminating at the phantom LER. MPLS local repair will thus establish one of the LERs as the primary LER and the other LER as the secondary LER. In an Ethernet domain, each boundary network device is treated analogously to a router in the VRRP scheme for routers.
Owner:RPX CLEARINGHOUSE
Control system of pure water cooling device of high voltage direct current (HVDC) transmission converter valve
ActiveCN101634866AGuaranteed reliabilityNarrow down the scope of the accidentTemperature control without auxillary powerExchange of informationControl system
The invention discloses a control system of a pure water cooling device of a high voltage direct current (HVDC) transmission converter valve, comprising two independent subsystems, wherein, each subsystem comprises a programmable logic controller (PLC), an input / output module, a sampling measurement system, a synchronization module, a human-machine interface system and a power supply system; the PLCs of the two subsystems can realize non-disturbance switching between the two PLCs and seamless exchange of information of each sub-control system through synchronous optical connection; the control system can monitor each online physical quantity in real time, and accurately control actions of machinery and electrical equipment of the whole valve cooling system in accordance with specific changes of the physical quantities, maximally ensure the reliability of the HVDC valve cooling system by a stable hot backup control subsystem, a control element and control programs, fully narrow the scope of accident, and prevent thyristor valve groups from being damaged due to the failure of the valve cooling system, thereby maintaining the safe, stable and reliable running of the thyristor valve groups.
Owner:GUANGZHOU GOALAND ENERGY CONSERVATION TECH
Communication device locating system
ActiveUS7536188B1RedundancyAchieve redundancyUnauthorised/fraudulent call preventionEavesdropping prevention circuitsTelecommunicationsCommunication device
A system for determining the vicinity of a communication device within a communication network is provided. Individual communication devices are provided with an active identification reader capable of reporting information concerning identified passive identification tags to a location server. At least some passive identification tags have fixed or known locations, allowing a communication device capable of reading such a passive identification1 tag to be determined to be within a particular vicinity or area. Communication devices may also be provided with passive identification tags to allow other active identification readers to determine whether the communication device is in their vicinity.
Owner:AVAYA INC
Relay agent device and proxy address leasing device
InactiveUS20080065747A1Achieve redundancyReduced responseDigital computer detailsTransmissionIp addressComputer engineering
A relay agent device disposed in one of a plurality of networks each accommodating a terminal and an address leasing device performing an address lease service for the terminal, has a notifying unit notifying a proxy address leasing device, employed in common between the plurality of networks, of an address lease state of the address leasing device with respect to the terminal, a detecting unit detecting a fault in the address leasing device, and a transfer unit transferring a message related to the address lease, which is sent from the terminal, to the proxy address leasing device in order for the proxy address leasing device to take over an IP address lease service provided by the address leasing device when the fault is detected, and transferring a message related to the address lease, which is addressed to the terminal from the proxy address leasing device, to the terminal.
Owner:FUJITSU LTD
Power converter for switch reluctance starter/generator
InactiveCN101582671AEffective connectionAchieve redundancyElectric generator controlMagnetic reluctanceEngineering
The invention discloses a power converter for a switch reluctance starter / generator, and belongs to the technical field of fault tolerant control of switch reluctance generators and design of power converters. The power converter adopts a power converter topology, and effectively combines a switching tube and a load switching tube of each bridge arm by adding six auxiliary switching tubes S1-S6 in the conventional asymmetrical semi-bridge power converter topology of the self-excitation mode so as to realize redundancy when any switching tube of each bridge arm fails; and the switching tube has high utilization rate and strong reliability. Aiming at different fault modes, the power converter can be applied to various different control strategies, realizes fault tolerant operation, greatly improves the generating property and reliability of a generating system, and is quite applicable to fault tolerant control for the switch reluctance starter / generator.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Container technology-based memory access method and system
InactiveCN107301022AUnified connectivityUnified accessInput/output to record carriersTransmissionContainerizationAccess method
Embodiments of the invention relate to the field of cloud storage, in particular to a container technology-based memory access method and system. The system comprises a volume management module, a memory drive management module, an authority management module and a container arrangement module; wherein the volume management module is used for sending a volume creation request by a user through an interface or an API so as to realize the creation of different types of volumes, and managing the created volumes; the memory drive management module is used for receiving the volume creation request sent by the volume management module; the authority management module is used for calling an interface of Keystone so as to realize the authentication and authority management of the user; the container arrangement module is used for operating each memory drive at a corresponding calculation node in a container manner; the memory drives provide configuration files aiming at different arrangement frames; and the arrangement module calls APIs of the arrangement frames to realize the containerization and scheduling of each memory drive. According to the method and system, the high availability and load balance of each memory drive are realized.
Owner:北京溢思得瑞智能科技研究院有限公司 +1
Network system and network redundancy method
ActiveUS20130077481A1Achieve redundancyError preventionTransmission systemsNetworked systemControl channel
In a network system in which a switch forwarding packets and a control server determining route information are separated, it is desired to achieve a redundancy of the control channel by an out-of-band control channel and an in-band control channel, when the switch receives a control message regarding the flow entry registration and the like based on the route information from the control server. Specifically, the separated switch and control server are connected by a control channel for sending and receiving the control message. The switch is not only connected to a control server via an out-of-band control channel by a route dedicated to the control message, but also connected to another control server via an in-band control channel by a route which is common with a normal data communication for determining the route information, to achieve a redundancy of the control channel.
Owner:NEC CORP
Method for Efficient Partition and Replication of Social-Based Applications
InactiveUS20110276649A1Minimize required replication overheadAchieve redundancyMultiple digital computer combinationsOffice automationCommunity structureUser profile
Method, system and computer program to provide transparent scalability to Online Social Networks and better performance of its back-end databases, by an efficient partitioning of the underlying community structure and replicating of user profiles, ensuring that every user has a master or slave replica of all his neighbours on the same partition where he is located.
Owner:TELEFONICA SA
Large-scale cluster node performance monitoring system
InactiveCN105915405AGuaranteed uptimeImprove reliabilityData switching networksData synchronizationNode clustering
The invention relates to a large-scale cluster node performance monitoring system. The system is characterized by comprising a monitoring management platform, an agent node cluster and an agent client. According to the performance monitoring system provided by the invention, the monitoring management platform is in charge of distributing and scheduling monitoring tasks of all members in the agent node cluster, and monitoring that configuration files are pushed by the monitoring management platform to the members in the agent node cluster in a unified mode; and redundancy examination and data synchronization are performed on all nodes in the agent node cluster, when agent nodes fail, the monitoring management platform, according to loads of residual nodes, distributes monitoring tasks which are originally executed by the failed agent nodes to other normal nodes, the process does not affect or interrupt monitoring, and thus normal operation of the monitoring system is effectively guaranteed.
Owner:TOYOU FEIJI ELECTRONICS
Automatic detection and analysis system for temperatures at multiple points of coke oven baking
InactiveCN102322970AContinuous acquisitionAccurate collectionThermometer detailsCoke oven safety devicesMultiple pointEngineering
The invention relates to the technical field of coke oven baking process, disclosing an automatic detection and analysis system for temperatures at multiple points of coke oven baking. The automatic detection and analysis system comprises a thermoelectric couple, a compensation lead, a lower computer, a switch board and an upper computer, wherein the upper computer comprises an upper computer work station and a redundancy upper computer work station which are respectively connected with the switch board and respectively comprise a database, a real-time data acquisition module, a data conversion module and a data integrated processing module. According to the automatic detection and analysis system disclosed by the invention, the stability and the data analysis capability of the temperature detection and analysis system in the coke oven baking process can be improved; the process maintenance load, the management cost and the fault rate of equipment are reduced; the coke oven baking quality is improved; the function of full-automatic detection and analysis of temperatures at the multiple points of the coke oven baking is achieved; the actual temperature of a furnace body is ensured to be basically matched with a planned temperature curve; the daily expansion ratio of a coke oven building body is controlled within normal range; the smooth implementation of a coke oven process is ensured; and the quality of the coke oven body is improved.
Owner:武汉钢铁有限公司
Greenhouse intelligent drip-irrigation device
InactiveCN101422124AShort preparation timeReal-time drip irrigationAgriculture gas emission reductionCultivating equipmentsGreenhouseSolenoid valve
The invention relates to a greenhouse intelligent drip irrigation device, which is characterized by comprising a hardware part and a software part; wherein, the hardware comprises six parts of modular design which are a back washing filter mechanism, a material liquid supplying mechanism, a material liquid mixing mechanism, a nutrition liquid drip irrigation mechanism, an electronic control mechanism and a nutrition liquid detection device; wherein, the back washing filter mechanism comprises a back washing device as well as a valve and a pressure sensor which are externally connected; the material liquid supplying mechanism comprises a mother liquor A1 supplying branch, a mother liquor B1 supplying branch and an acid / alkali liquid supplying branch which are connected in parallel; the material liquid mixing mechanism comprises a liquid storage tank as well as an upper cover and a stirring pump matched with the liquid storage tank; the electronic control mechanism comprises two control branches of a pump and a solenoid pilot actuated valve which are controlled by an industrial computer; the software part comprises the procedures of nutrition liquid detection and control; and the control procedure comprises a main procedure, four sub-procedures and a knowledge base.
Owner:HEBEI UNIV OF TECH
Self-balance control method of movable type inverted pendulum system and self-balance vehicle intelligent control system
InactiveCN103753557AImprove stabilityImprove reliabilityProgramme-controlled manipulatorMovable typeEquilibrium control
The invention discloses a self-balance control method of a movable type inverted pendulum system. State signals of the movable type inverted pendulum system are collected, the filter processing data method with the combination of a wavelet topology network and a regulator is adopted, a signal fusion technology is used for assistance, input data, middle data and output data of each filter node where effective values of the wavelet network enter are continuously adjusted, the controlled system control number output by the system is completed, the stability and the reliability of work of an inverted pendulum are improved, and the driving and riding stability, safety and comfort of an electric riding tool based on the inverted pendulum system are improved. The invention discloses a self-balance vehicle intelligent control system. By the adoption of a filter processing unit and a signal fusion unit, the capacity of combined control and information feedback of an electrical system and a mechanical system are improved, tiny disturbance generated in the movement process of a self-balance vehicle is reduced, the intelligent degree is improved, the self-balance vehicle intelligent control system is convenient and easy to use, comfortable, stable and capable of reducing cost and improving the cost performance.
Owner:SHANGHAI CHUANGHUI ROBOT TECH
Device and method for automatically controlling fan after server is powered on
InactiveCN105114346AAchieve redundancyRealize automatic regulationPump controlNon-positive displacement fluid enginesElectricityComputer module
The invention provides a device and method for automatically controlling a fan after a server is powered on and relates to the technical field of computer servers. The device comprises a temperature collection module (1), a fan control module (2), a BMC management module (3), a circuit switching module (4) and a fan module (5). A cooling system is monitored and controlled after the server is just powered on through an AC and before a BMC management chip does not complete initialization; meanwhile, the rotation speed of the fan is controlled by automatically switching between two circuits; accordingly, the reliability of heat dissipation of the system can be guaranteed, and consumption of extra power caused by the constant high rotation speed can be avoided.
Owner:LANGCHAO ELECTRONIC INFORMATION IND CO LTD
Method, apparatus and device for designing network attached storage cluster
ActiveCN107734026AImprove usabilityReduce operating costsData switching networksProtocol for Carrying Authentication for Network AccessMagnetic disks
The embodiment of the invention discloses a method, apparatus and device for designing a network attached storage cluster, a computer readable storage medium and a network attached storage cluster system. The method comprises the following steps: setting corresponding virtual machines for controllers of local storage nodes in advance, mounting pre-customized centos mirror images in the virtual machines in advance, adding corresponding magnetic disks, and formatting the magnetic disks as local file systems; separately setting Gluster FS servers and Gluster FS clients for the virtual machines; when the storage nodes receive file access requests, sending the file access requests to kernel VFS layers, and sending the file access requests to corresponding Gluster FS clients via FUSE modules, sending the file access requests to target Gluster FS servers via TCP / IP, and finally sending the file access requests to the local file systems, so that the local file systems return the data corresponding to the file access requests to the storage nodes along the original paths to achieve data access. The reliability, availability and stability of the network additional storage cluster are improved.
Owner:SUZHOU LANGCHAO INTELLIGENT TECH CO LTD
Distributed micro-service registration and calling method based on broadcast
ActiveCN111615066AImprove usabilityAchieve consistencyNetwork traffic/resource managementBroadcast service distributionEngineeringService information
The invention discloses a distributed micro-service registration and calling method based on broadcast. The method comprises the following steps that a registration center is registered in each host deployed with micro-service; when a new micro-service is registered in a certain host, the host sends a registration broadcast to the network to notify other hosts in the network to update the micro-service list in the registration center; when a caller calls the micro-service, the caller initiates a query broadcast to the network; the host deployed with the homonymous micro-service initiates a response to the network, and provides the current load condition of the host and the deployed micro-service information; and after receiving the response, the caller selects a proper host through the load balancer according to the current load conditions of different hosts, transmits a request parameter to the selected host, and calls the micro-service. According to the invention, a distributed and decentralized micro-service registration mechanism is adopted, so that registration and calling of other micro-services are not influenced after one registration node is offline due to a fault, and theavailability of the micro-services is improved.
Owner:OCEAN UNIV OF CHINA
Program synthesis system and method applicable to networked intelligent digital media
ActiveCN102984465AHigh synthesis efficiencyImprove securityTelevision system detailsColor television detailsDisk arrayComputer science
The invention relates to a program synthesis system and a method applicable to networked intelligent digital media. The system comprises a disk array, a management server, a plurality of synthesis servers and a spliced server that are mutually connected by a network, wherein the disk array is internally provided with a storyboard database, a material database, a synthesized database, a spliced record database and a spliced completion database, and the management server is internally provided with an intelligent analysis engine, a service unit, a task monitoring unit and a file management unit. The intelligent analysis engine of the system can be split according to the storyboard complexity, a certain storyboard length and the quantity of configured servers. As a task type analysis device is adopted, the high-definition distinguishing is conducted on a task, the high-definition intelligent switching is supported, the working form of each server is automatically switched according to a synthesis target, the synthesis quality is ensured, the equipment redundancy is achieved due to the synthesis servers, and the safety performance of the system is improved.
Owner:BEIJING DAYANG TECH DEV
On-the-spot bus scatter control station
InactiveCN1455566AIncrease the level of automationIncrease costElectric signal transmission systemsElectric controllersIntelligent NetworkPrimary station
The control station is based on a network node of FF protocol and it comprises control main station module based on FF protocol, universal I / O terminal base and various I / O modules. Each I / O module is connected to control main station module through the universal I / O terminal base. The control main station module is intelligent network communication device based on the FF protocol, which comprises two modules of I / O management and control as well as FF protocol communication. The first central precessor in charge of I / O management is connected in logic and adherence with the second one is charge of FF protocol communication module operation via dual mouth and control logic circuit to carry on data exchange i.e dual CPU structure is applied as embedding virtualizer of programmable algorithm functional block for finalizing operation of the said block.
Owner:SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
Multi-cloud-storage management system capable of improving storage availability
ActiveCN107566463AAchieve redundancyImprove reliabilityTransmissionSpecial data processing applicationsDirectory structureData management
The invention provides a multi-cloud-storage management system capable of improving storage availability. In order to overcome defects in the existing cloud storage uploading interface and multi-cloud-storage data management, the invention puts forward a multi-cloud-storage management system capable of improving storage availability, thereby improving data reliability, optimizing an uploading rate, eliminating repeated data in cloud storage, and providing a convenient directory structure management.
Owner:BEIHANG UNIV
Battery management system, battery and motor vehicle having a battery management system, and method for monitoring a battery
ActiveCN103781653ACutting costsEliminate difficultiesElectric devicesElectrical testingMicrocontrollerComputer module
Owner:ROBERT BOSCH GMBH +1
Method for controlling parallel redundancy of MVB master
ActiveCN103825791AGuaranteed data transferGuaranteed uptimeError preventionBus networksNetworked systemUsability
The invention discloses a method for controlling the parallel redundancy of an MVB master. According to the method, two identical VCM modules are used as bus master modules, and the two VCM modules are connected into a network system simultaneously and monitor the state of an MVB simultaneously; under the condition that a master module on the MVB has a failure or is lost, a standby main module conducts redundancy switch, becomes a bus master and takes over the MVB. The method for controlling the parallel redundancy of the MVB master has the advantages that the principle is simple, and the reliability and the usability of the whole network system can be improved.
Owner:ZHUZHOU CSR TIMES ELECTRIC CO LTD
System and method for downloading data
InactiveCN104702702AMeet independent readMeet the high I/O demands of reading fragmentationTransmissionOperational systemDistributed File System
The invention discloses a system and a method for downloading data. The system comprises a plurality of downloading groups, wherein each downloading group comprises an Linux virtual server LVS, at least two downloading nodes Nginx and a distributed file system HDFS; an Nginx operation system is used for mounting storage service of the HDFS through a user space file system FUSE; the LVS is used for receiving a download request from the user, performing scheduling selection for each Nginx and forwarding the download request to the selected Nginx; the Nginx are used for accessing data stored in the HDFS through the FUSE after receiving the download request forwarded by the LVS, and responding to the download request of the user; the HDFS is used for storing data. According to the method, the demand on download service under large storage data quantity, large file quantity and non-concentrated access hot spots of some service users can be met.
Owner:BEIJING QIHOO TECH CO LTD
Intelligent housing system based on Internet of Things
InactiveCN104898453AEasy to viewSave electricityComputer controlProgramme total factory controlIot gatewayControl signal
An intelligent housing system based on Internet of Things comprises an intelligent socket, an internet of things gateway, a two-dimensional code tag and a remote control terminal. The intelligent socket is connected with the internet of things gateway via a radio communication mode and is applicable to monitoring consumption power of a power device in real time and transmitting the consumption power of the power device to the internet of things gateway, the internet of things gateway is connected with the remote control terminal via the radio communication way and is applicable to transferring the consumption power of the power device to the remote control terminal and generating control signals changing operating states of the power device according to the remote control commands transmitted by the remote control terminal, the two-dimensional code tag is arranged on the surface of the internet of things gateway and is applicable to recording address of the internet of things gateway, and the remote control terminal is wirelessly communicated with the internet of things gateway by reading the two-dimensional code tag, displays the consumption power of the power deice to users and generates the remote control commands according to user operations. The intelligent housing system based on Internet of Things controls the operating states of the power device according to the consumption power of the power device.
Owner:CHENGDU ZHONGSHAN SCI & TECH
Uninterruptedly powered handset and use method
ActiveCN101621569AAvoid the trouble of switching on and offExtend your lifeSubstation equipmentEmergency power supply arrangementsSupply managementEngineering
The invention discloses an uninterruptedly powered handset and a use method. The uninterruptedly powered handset comprises a main battery, an auxiliary battery and a power supply management and control module which is connected with two power supplies and controls the conducting state of the power supplies. The use method comprises the following steps: (1)connecting a main power supply, and disconnecting an auxiliary power supply; (2) supplying power to the handset by the main power supply; (3)checking whether the voltage of the main power supply is lower than working voltage or not; if so, executing step (4); if not, executing step (2); (4) displaying prompting information, disconnecting the main power supply, and connecting the auxiliary power supply; (5) supplying power to the handset by the auxiliary power supply; (6) checking whether the handset needs charging or not or the main battery needs changing; if so, executing step (2); if not executing step (7); (7) checking whether the voltage of the auxiliary power supply is lower than latch voltage or not, if so, executing step (8), if not, executing step (6); (8) displaying prompting information; (9) checking whether the handset needs charging or the auxiliary battery needs changing; if so, executing step (6); if not, shutting down the handset. The invention can automatically switch power supplies when the handset is in use.
Owner:HUAQIN TECH CO LTD
Method, device and system for connecting and switching server
ActiveCN101714949AReduce business lossAchieve redundancyData switching networksHolding timeStart time
The invention provides a method, a device and a system for connecting and switching a server. The method comprises the following steps: receiving a connection request sent by a front-end server, and establishing a long connection with the front-end server according to the connection request; according to a load balancing algorithm, determining a rear-end server which can interact data with the front-end server, and establishing the long connection with the rear-end server; receiving a rear-end server changing request transmitted from outside; according to the rear-end server changing request, during the period from a change starting time to a service stream holding time, forwarding a trading request packet which is sent to a change server by the front-end server to other rear-end servers re-determined by the load balancing algorithm, and sending a return packet which is fed back to the front-end server by the change server to the front-end server; and during the period from the service stream holding time to a change ending time, stopping communication with the change server. The method, the device and the system allow a trade which is being carried out by a client to be normally carried out when one end server is stopped to be maintained or switched.
Owner:INDUSTRIAL AND COMMERCIAL BANK OF CHINA
Satellite-borne clock redundant system and method
ActiveCN106154824ARealize clock redundancy functionImprove reliabilitySafety arrangmentsThird partyControl system
The invention provides a satellite-borne clock redundant system and method. The satellite-borne clock redundant system and method are used for providing a system clock for a spaceflight control system. According to the system and method, an external high-accuracy clock and two internal clocks sources of which are not the same serve as a main clock, a backup clock and a third-party clock respectively, the third-party clock can be adopted for arbitration only when the main clock and the backup clock are inconsistent, single-redundancy faults of the clock can be allowed, the tri-redundancy aim is achieved, implementation is simple, and cost is low. According to the satellite-borne clock redundant system and method, the clock redundancy function of a control system is achieved through the high-accuracy clock of an inertia unit and the two clocks in a flight control computer, the high-accuracy clock of the inertia unit is sufficiently used, influences of faults of the clock on running of the control system are avoided, the reliability and the safety of the control system can be improved, and the satellite-borne clock redundant system and method have the advantages of being low in implementation cost and facilitating engineering realization.
Owner:BEIJING AEROSPACE AUTOMATIC CONTROL RES INST +1
Method for achieving dual-network hot standby redundancy of blank pipe automatic system
ActiveCN103442035AEfficient Network MonitoringEfficient methodError preventionData switching networksControl flowTimestamp
The invention discloses a method for achieving dual-network hot standby redundancy of a blank pipe automatic system. The method comprises the steps of establishing network hardware connecting topology, establishing network state monitoring process in an application layer of a control procedure of each machine, establishing a working net switching control procedure in a network monitoring procedure of each machine, establishing a redundancy sending operation procedure at the data sending end of each machine, establishing a data filtering control procedure at the receiving end of each machine, establishing a network state monitoring terminal and the like. The method has the advantages that a distributed network monitoring mechanism is adopted, the network state is monitored in real time, and the automatic switching speed of a network is high; two three-layer exchangers are in cascade connection so that when one of the networks of each machine is normal, communication between the two sides can be conducted and the cross fault can be avoided; in terms of data transmission, data are simultaneously sent to the main network and the standby network of each receiving end by one sending end, and redundancy of the data on the main network and the standby network is achieved; due to the filtering of data numbers and timestamps, a repeat and leakage of data receiving are avoided and the effectiveness and the seamlessness of switching are guaranteed.
Owner:CIVIL AVIATION UNIV OF CHINA
Battery, method for monitoring battery, and battery system comprising battery
InactiveCN104795604AImprove reliabilityEasy to monitorRadiation pyrometryElectric devicesEngineeringBattery system
The invention relates to a battery (10, 20), which includes many battery cells (1001-1004) for storing electric energy and many sensors (3201-3204) for detecting the temperature measurement values of the battery cells (1001-1004). Each of the battery cells (1001-1004) is provided with one of the sensors (3201-3204), and includes another one sensor (420) for detecting the temperature measurement value of the battery (10, 20) and also includes a monitoring device (510). The monitoring device is connected to the sensors (3201-3204) and the sensor (420), and is used for processing the temperature measurement values of the sensors (3201-3204) and the temperature measurement value of the sensor (420), so the monitoring device (510) performs redundant monitoring of the battery cells (1001-1004). The invention also relates to a battery system, and a transport tool and method.
Owner:ROBERT BOSCH GMBH
Rocket ground test control system based on redundant structure
The invention discloses a rocket ground test control system based on a redundant structure. The rocket ground test control system based on the redundant structure comprises a front-end sending controlling PLC unit, an optical terminal machine unit, a rear-end interchanger unit and a main control computer. The front-end sending controlling PLC unit comprises two redundantly configured front-end PLC sub-systems and at least two bus stations, wherein the two front-end PLC sub-systems are connected with the bus stations respectively, the bus stations are sequentially connected with other bus stations, the two front-end PLC sub-systems are respectively provided with a CPU module and at least one input module, the two CPU modules are mutually connected, all the input modules simultaneously receive the same way of input signals, and each bus station is respectively provided with at least one output module. The rocket ground test control system based on the redundant structure has the advantages of achieving redundancy, improving the reliability of a test process and reducing the possibility that a single-point failure mode occurs.
Owner:SHANGHAI AEROSPACE COMP TECH INST
Blower filter device, respiratory protection device, operational infrastructure and method
InactiveUS20170001048A1Improve perceptionAssistance is facilitatedChemical protectionHeat protectionCommunication interfaceRespirator
A blower filter device includes a blower unit that draws and delivers ambient air; a filter unit that filters a harmful substance, or a filter coupling to couple and uncouple the filter unit. A control unit is configured to actuate the blower unit, to determine an operating state of the blower filter device and / or other respirator system components and / or a respirator system (100) as a whole and to generate an alarm if a determined operating state indicates a disturbance. An output unit is configured to receive the alarm from the control unit and to output the alarm. A communication interface (228) is configured for wireless network integration and to transmit the alarm via the network (238). A respirator system (100) with such a blower filter device, an operational infrastructure (300) with such a respirator system, as well as a method of blower filter operation and operational infrastructure monitoring are provided.
Owner:DRAGER SAFETY
Power supply system supporting redundancy backup and hot plugging
ActiveCN104319870ARealize redundant backup functionAchieve redundancyEmergency power supply arrangementsMonitoring systemEngineering
The invention discloses a power supply system supporting redundancy backup and hot plugging, comprising at least two power supply systems. Each power supply system comprises a power supply unit, a first control switch, a second control switch, a first controllable switch driving unit, a second controllable switch driving unit, a voltage comparison unit, a first sampling unit, and a second sampling unit. Under the condition that the power supply system is not current-shared, power supply switching can be carried out automatically, and a redundancy backup function can be achieved; and hot plugging is carried out without spark or power cut, and no other auxiliary connecting line is needed except the connection of two output voltages between the power supply systems. In addition, power supply system switching is actively implemented by the power supply system itself, no external monitoring system is needed, and redundancy and backup functions are truly achieved. The power supply system supporting redundancy backup and hot plugging can be widely applied to the field of redundant power supplies.
Owner:BANGYAN TECH
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