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882results about How to "Reduce points of failure" patented technology
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Service link selection control method and device
ActiveCN103905447AReduce loadReduce points of failureTelephonic communicationData switching networksService flowDistributed computing
The invention discloses a service link selection control method and device. The service link selection control method comprises the steps that a service link selection strategy sent by a coordinated device is received, wherein the service link selection strategy comprises the corresponding relation among first strategy contextual information, a first application type and a first service link, the first service link is a path composed of a forward device and a value added service device by which first service flow needs to pass, the first service flow comes from a user matched with the first strategy contextual information, and the type of the first service flow is the first application type; a PCRF unit receives the first strategy contextual information, and a service link selection control strategy is determined according to the first strategy contextual information and the service link selection strategy, wherein the service link selection control strategy comprises the corresponding relation between the first application type and the first service link; the PCRF unit sends the service link selection control strategy to a flow classifier. According to the service link selection control method, unnecessary devices can be prevented from being passed by.
Owner:HUAWEI TECH CO LTD
Ultra-high pressure circuit monitoring system for solar power generation
InactiveCN101359022ARealize long-term online operationSolve power problemsData switching by path configurationFault locationTime informationUltra high pressure
The invention relates to a solar-powered ultra-high voltage line monitoring system, comprising a high-voltage side solar power supply, a high voltage line monitoring device, a low-voltage side solar power supply, a line monitoring host computer and a remote wireless intelligent monitoring system. The high-voltage side solar power supply and the low-voltage side solar power supply comprise solar batteries, rechargeable batteries and power management units; the high voltage line monitoring device and the line monitoring host computer comprise sensing units as well as data acquisition and recording units for detecting and processing field parameters of various lines; and the remote wireless intelligent monitoring system comprises a wireless communication unit and a monitoring system master station. The high-voltage side solar power supply, the high voltage line monitoring device, the low-voltage side solar power supply, the line monitoring host computer and the remote wireless intelligent monitoring system compose a field device which collects and records the running status and fault information of high-voltage lines through solar power and transmits the running status and fault information to the monitoring system master station through the remote wireless communication unit so as to provide real-time information for power line monitoring.
Owner:SOUTHEAST UNIV +2
Network video recorder cluster video monitoring system and method
ActiveCN101877783ALow costMapping implementationClosed circuit television systemsData switching networksVideo monitoringVideo storage
The invention relates to a network video recorder cluster video monitoring system and a method. The system comprises a network encoder, a plurality of network video recorders (NVR) and an NVR manager, wherein the network encoder, the NVR manager and each NVR are all connected with an IP network; each NVR supports a network storage protocol that the network encoder can directly access to audio / video data thereon so as to directly store the audio / vide data output by the network encoder in an encoding manner in the NVR; the NVR manager is composed of a mapping module and a monitoring module, the mapping module is stored with the mapping relationship between the network encoder and each NVR, and the monitoring module monitors and manages the audio-video data received by each NVR; and each NVR receives the audio-video data encoded by the network encoder by the IP network under the control of the NVR manager, records, responses to access requests from a client side or the network encoder, and queries or replays or stores the recording data. The system can manage the NVR in a cluster manner, solves the problems of performance and storage bottlenecks simultaneously and improves the whole system performance.
Owner:HANGZHOU HIKVISION DIGITAL TECH +1
Full digitalized distributed intelligent servo driver
InactiveCN102073302AReduce points of failureLow costElectric motor controlNumerical controlModularityField-programmable gate array
The invention discloses a full digitalized distributed intelligent servo driver which adopts a full digitalized DSP (Digital Signal Processor) + FPGA (Field Programmable Gate Array) structure. The intelligent servo driver provided by the invention integrates the functions of motion control, motor control and a simple PLC (Programmable Logic Controller) and can conveniently construct a motion control system without an upper computer motion controller (card). The intelligent servo driver can be used for controlling and driving a direct current brush (brushless) motor, an alternating current servo motor and a linear motor only through software configuration without changing hardware. The intelligent servo driver can realize the following operation modes: A. an RS232 network control mode; B. an RS485 distributed network control mode; C. an independent driver running mode without the upper computer; D. a pulse command running mode; and E. an analog signal running mode. The servo driver provided in the invention adopts a modularized structure, the same control module can be matched with driving modules of different power levels to form intelligent servo driving systems of different power levels. By utilizing the full digitalized distributed intelligent servo driver, a motion control system with the advantages of low cost, flexible system configuration, simpleness and convenience for operation, reliable performance and convenience of maintenance can be realized.
Owner:北京诺信泰伺服科技有限公司
Stand-by safety chain monitoring and protecting device for wind power generation control system
InactiveCN101776042AImprove protectionReduce connectionsWind motor controlMachines/enginesActive safetyControl system
The invention discloses a stand-by safety chain monitoring and protecting device for a wind power generation control system, comprising a power supply, a cable-twisting switch, an engine-room vibration protection switch, a grid protection switch, a converter protection switch, an engine room and tower support emergent stop button, a distributed heartbeat signal monitoring switch, a rotary speed protection switch and a safety chain relay, wherein the power supply generates power signals and is respectively connected in series with the cable-twisting switch, the engine-room vibration protection switch, the grid protection switch, the converter protection switch, the engine room and the tower support emergent stop button, the distributed heartbeat signal monitoring switch, the rotary speed protection switch and the safety chain relay. The monitoring and protecting device adopts an active safety design, runs independent of a PLC system and monitors relevant signals at real time; and when incidents endangering the safety of a machine set occur, the monitoring and protecting device actively controls a pitch system to realize full feathering, thereby achieving the safe shut-down of the machine set.
Owner:NANJING SCIYON AUTOMATION GRP
Serviceable conformal em shield
InactiveUS20110120764A1Easy to disassembleImprove adhesionMagnetic/electric field screeningCircuit security detailsEngineeringElectronic component
A conformal electro-magnetic (EM) shield and a method of applying such a shield are provided herein as well as variations thereof. Variations include, but are not limited to, frequency-selective shielding, shields containing active and / or passive electronic components, and strippable shields that can easily be applied to and removed from underlying components. Variations of a shield structure include at least an insulating layer between the underling component and the shield, and shielding and / or capping layers disposed over the insulating layer.
Owner:LOCKHEED MARTIN CORP
Level-wind system for coiled tubing
InactiveUS20060273213A1Less-expensive to manufactureLess-expensive to maintainDrilling rodsFilament handlingWind systemHorizontal axis
A level-wind head and system for coiled tubing the head adapted for passing coiled tubing of various outside diameters without repositioning or replacing the rollers. A system of an embodiment of the present invention includes a coiled tubing reel mounted for rotation about a horizontal axis, a level-wind head comprising only one pair rollers mounted in spaced relation to one another to form a throat sized to pass various outside diameter coiled tubing, without replacement or repositioning of the pair of rollers, to or from the reel, and a positioning system in connection with the level-wind head for selectively positioning the level-wind head proximate the reel.
Owner:SCHLUMBERGER TECH CORP
Technique and equipment for processing package piece of packaging box
InactiveCN101474889AEasy to produceSimple processBox making operationsPaper-makingCross cutStore food
The invention relates to a technique and an apparatus for producing a packing piece of a packing box which is made of paper composite material and is used for storing foods for a long time in asepsis. In the prior art, the packing piece of the packing box is produced by performing impressing, cross cutting into uniwafers, cutting edges and sealing on the composite and printed wound roll packing material. The prior art needs a plurality of apparatuses for cooperation. The invention aims to provide a technique and an apparatus for producing the packing piece of the packing box. The technique comprises that: the packing material is wound, the axial position is corrected automatically by rectifying a deviation, printing marks are aligned, the indentation line is pressed, a sealing film is adhered, the product enters processes of vertically sealing, hot adhering and press fit after preformation to finish the vertical sealing to produce a paper pipe; the vertical sealing position of the paper pipe is cooled, the paper pipe is pressed flat left and right along the indentation line and is positioned and cut, and the packing piece of a packing box is produced by automatic calibration and collected into a pile. The invention has the advantages that one apparatus finishes the whole production technique, the working procedure is simplified, the number of fault points is small, the rate of finished product is high, the production efficiency is high, the product quality is stable, the production cost is low, and the invention is suitable for large-scale industrial production.
Owner:李玉龙
Asymmetric cylinder closed-loop speed system controlled by electro-hydraulic proportional pump
The invention relates to a control system of electric liquid ratio pump control asymmetry cylinder. Wherein, the oil gate A1 of electric liquid ratio pump (1) with closed-loop flux control system is connected to the single valve (4) oil gate A2, the single valve (7) oil gate A3, the overflow valve (8) oil gate A4, the overflow valve (9) oil gate A5, the flux division overflow valve (19) oil gate A6 and the asymmetry oil cylinder (18) rod chamber; the oil gate B1 of electric liquid ratio pump (1) is connected to the single valve (11) oil gate B2, the single valve (10) oil gate B3, the overflow valve (8) oil gate B4, the overflow valve (9) oil gate B4, and the liquid control single valve (17) oil gate B5; and the oil gate B6 of liquid control single valve (17) is connected to the non-rod chamber of asymmetry oil cylinder (18) and the maintenance-safety circuit. The oil feeding circuit, main pump zero flux unload circuit and pressure-limited circuit are arranged between the non-rod chamber and the rod chamber oil pip.
Owner:WUHAN UNIV OF SCI & TECH
Crystallizer for hydrolyzing carnallite
ActiveCN103073030AIncrease contact areaSolve the problem of overflow from the upper part of the inner cylinder to the bottom of the crystallizer without sufficient mixing and decompositionAlkali metal halide formation shapeDecompositionChloride
The invention relates to a crystallizer for hydrolyzing carnallite. The crystallize comprises an inner cylinder, an outer cylinder, a mother solution distributor, a stirring paddle, a crystallizer cylinder body, a low-sodium carnallite inlet, a mother solution inlet, a decomposition liquid outlet and a product outlet. According to the crystallizer, the remaining time of low-sodium carnallite in a dissolving region can be prolonged, and the problem that low-sodium carnallite is not fully mixed and decomposed and then overflows to the bottom of the crystallizer from the upper part of the inner cylinder in the existing crystallizer is solved; and generated potassium chloride particles can grow above 0.2mm in particle size to ensure that solid potassium chloride is easily dewatered and dried, and washing water and heat energy required by drying are saved.
Owner:ЦИНХАЙ СОЛТ ЛЕЙК ИНДАСТРИ ГРУП КО ЛТД
Infusion calling automatic control and medical care management system
InactiveCN102218170AAccurate detectionEasy to controlAlarmsFlow monitorsAutomatic controlControl system
The invention provides an infusion calling automatic control and medical care management system. The system comprises hospital bed intelligent terminals, a doctor handheld terminal, a nurse handheld terminal, a central master control system for patient handheld terminals and a nurse station, wherein the hospital bed intelligent terminals are arranged on hospital beds and can accurately detect abnormal status information and give the alarm in the infusion process and simultaneously carry out the adjustment on the dropping speed automatically; in the non-infusion process, the hospital bed intelligent terminals can remind nurses of carrying out a nursing procedure on patients at regular time; the patient handheld terminals are used for sending the information to the hospital bed intelligent terminals; and the wireless communication among the doctor handheld terminal, the nurse handheld terminals and the hospital bed intelligent terminals is completed by the central master control system.The system is capable of accurately detecting the abnormal status information and giving the alarm in the infusion process and simultaneously adjusting the dropping speed automatically; the system iscapable of reminding the nurses of carrying out the nursing procedure on patients at regular time in the non-infusion process; the central master control system is used for managing the information of the patients and the information of medical care personnel and carrying out the real-time control and management on the plurality of hospital bed intelligent terminals.
Owner:吴迪熙
Method and device for obtaining data from service panel kernel mode by main control panel user mode
ActiveCN105939365AImprove experienceShorten the data transfer pathTransmissionSystem callComputer science
The invention provides a method and device for transmitting data between a main control panel and a service panel, wherein the method comprises the following steps of: obtaining user request data; sending the user request data to a kernel mode through a system calling communication mechanism; sending a user request message to a service panel kernel mode through a communication mechanism between kernel mode panels; establishing a netlink server when an operation type is a read operation; sending received response data to the netlink server side through a netlink client; returning to a user mode program by the netlink server side after receiving the response data; and analyzing the response data by the user mode program, and forming a user understandable form displayed to users. Due to adoption of the method provided by the embodiment of the invention, a main control panel user mode program can directly read data from a service panel kernel mode program effectively in real time.
Owner:HANGZHOU DPTECH TECH
Automatic cover opening device for sample container
ActiveCN104609348ALow costSimple mechanical structureTight-fitting lid removalThreaded caps removalEconomic benefitsMechanical engineering
Owner:DIRUI MEDICAL TECH CO LTD
Hair-planting machine
The invention discloses a hair-planting machine in the field of hairbrush machinery. A stander is provided with a main motor, a main shaft, a brush body workbench, a hair mouth movement mechanism and drilling mechanisms, wherein the main motor drives the main shaft to rotate; a hair mouth conjugate cam and drilling conjugate cams are all arranged on the main shaft; the upper ends of drilling conjugate rockers are meshed with the corresponding drilling conjugate cams, while lower ends are hinged with the upper ends of corresponding drilling connecting rods; the lower ends of the drilling connecting rods are hinged with the middle parts of corresponding drill stems; the drill stems are positioned in drill stem holes of corresponding drill stem seats and can slide up and down along the corresponding drill stem holes; the upper ends of each drill stem are provided with a drill stem driving wheel and are driven through belts by corresponding drill stem drive motors, while the lower ends are provided with a drill bit and are parallel to a hair mouth; two sets of drilling mechanisms are positioned on the two sides of the hair mouth respectively; a space between a first drill bit and the hair mouth is twice that between a second drill bit and the hair mouth; and drilling and hair planting are sequentially finished after a bottom plate of a brush body is fixed on the workbench without replacing a fixture and recalibrating positions. Therefore, time and labor are greatly saved and the production efficiency is improved.
Owner:YANGZHOU HAIXING CNC BRUSH MACHINERY
Mobile terminal commercial vehicle monitoring system for realizing diagnosis technology and Bluetooth communication under Android platform
InactiveCN104038262ALow technical requirementsFirmly connectedNear-field systems using receiversBus networksArea networkMonitoring system
The invention discloses a mobile terminal commercial vehicle monitoring system for realizing a diagnostic technique and Bluetooth communication under an Android platform. The system comprises a commercial vehicle environment, a lower computer and an upper computer, wherein the vehicle environment is provided with an OBD2 (On-Board Diagnostics 2) diagnostic interface which is connected with the lower computer and can be used for transmitting vehicle Can (Controller Area Network) information consistent with a J1939 protocol in the vehicle; the upper computer and the lower computer can communicate with each other through a Bluetooth module; the lower computer further comprises an OBD2 diagnostic interface male end plug, a power supply module, a CAN receiving-transmitting module, a storage module and the Bluetooth module; the power supply module is connected with a control unit, the storage module, the CAN receiving-transmitting module and the Bluetooth module; the upper computer is an Android mobile terminal. The system acquires real-time state data of the vehicle from the vehicle diagnostic interface, and the vehicle is monitored and managed through the Android mobile terminal. The system has the advantages of low cost, convenience, rapidness, high reliability, high portability, freeness from wiring, reduction of failure points and low requirement on technical personnel.
Owner:SHAANXI FAST GEAR CO
High-performance computing cluster dynamic node operation method
ActiveCN107040407APrevent idlingReduce the required powerData switching networksOperation schedulingFile system
The invention provides a high-performance computing cluster dynamic node operation method. The method comprises the following steps: providing a unified system file system space and diskless booting based on an Infiniband network, providing cluster operation scheduling, power on / off control, system monitoring and like functions based on the Ethernet. Through above mentioned way, the deployment efficiency of the high-performance computing cluster can be improved, a fault rate is lowered, the job submitting is simplified, the energy source use rate and the capital use rate are improved, and the use efficiency and performance are promoted.
Owner:成都中讯创新科技股份有限公司
POE switch testing device and detection method thereof
InactiveCN105337795AImprove work efficiencyReduce expensesData switching current supplyNetwork packetComputer module
The invention provides a POE switch testing device and a detection method thereof. The POE switch testing device comprises a temperature and humidity adjusting box; a POE switch system disposed in the temperature and humidity adjusting box; a POE system detection tool module connected with the POE switch system, arranged outside the temperature and humidity adjusting box, and used for detecting the power supply function of the POE switch system; an IP network camera connected with the POE switch system and arranged outside the temperature and humidity adjusting box; a temperature acquisition module connected with the POE switch system and used for detecting the temperature rise state of the POE switch system; and a PC arranged outside the temperature and humidity adjusting box, connected with the POE system detection tool module and used for detecting the data packet transmitting and receiving function of the POE switch system. The POE switch testing device solves the defects and the abuses of a conventional detection system using single AC voltage and power frequency by using different AC voltage and power frequency according to users at different regions.
Owner:PHICOMM (SHANGHAI) CO LTD
Systems for capturing a client vehicle
ActiveUS20180297723A1Simple docking architectureImprove reliabilityAircraft componentsArtificial satellitesBiomedical engineeringSpacecraft
Capture assemblies and compliant extension assemblies may be utilized for insertion into a nozzle of a liquid engine of a spacecraft. The capture assembly may include an apparatus such as a probe for insertion into the nozzle and an assembly at least partially enclosed in a forward portion of the probe. The assembly may include a plurality of actuated fingers for deploying outwardly from the probe when the probe is inserted into the nozzle. The compliant extension assembly may be at least partially enclosed in a housing connected to the capture assembly for axial movement of the probe. The compliant extension assembly may facilitate axial movement of the probe between a retracted position and an extended position, wherein the probe is extended forwardly, relative to the housing.
Owner:NORTHROP GRUMMAN SYST CORP
Antenna azimuth transition adjusting device
The invention provides an antenna azimuth transition adjusting device comprising a support frame (101), a power input motor (102), a power transition motor (103), a grooved pulley (201), a puller (202), a driving gear (203), a switching gear (204) and a driven gear (205); the power input motor (102) is directly or switched to be coaxially fixed with the grooved pulley (201); the power transition motor (103) is directly or switched to be coaxially fixed with the puller (202); the driving gear (203), the switching gear (204) and the driven gear (205) can form a gear set; a plurality of sets of worm and gear devices are arranged, and corresponding spur gears (106) and spur racks (107) are arranged so as to convert rotations into linear displacements. The grooved pulley and the worm and gearsare combined, thus changing a conventional mode of sun gear and planetary gear multistage gear drive, reducing parts number, saving assembling time, and reducing fault points.
Owner:WUHAN HONGXIN TELECOMM TECH CO LTD
Running the red light detection method and system based on video
ActiveCN101419754AMutual testimonyImprove response rateDetection of traffic movementSignal generator with multiple pick-up deviceRed light runningVideo based
The invention provides a method for detecting red light running based on video and a system thereof. The method comprises the steps as follows: vehicle entering a red light running detection area is shot for a panoramic video and a close-range video to generate a panoramic video data and a close-range video data of the detected vehicle; the state of a traffic signal lamp in the red light running detection area is shot for the panoramic video to generate traffic signal lamp state video data; a red light signal time period is obtained according to the traffic signal lamp state video data; and the panoramic video data and the close-range video data of the detected vehicle within the red light signal time period are combined and processed to generate a panoramic / close-range red light running vehicle data. The invention improves the validity of a red light running image evidence.
Owner:苏州万集车联网技术有限公司
Intelligent variable-frequency motor and water supply system
ActiveCN104953752AImprove reliabilityOverall small sizeSupports/enclosures/casingsElectric machineControl theory
The invention discloses an intelligent variable-frequency motor and a water supply system. The intelligent variable-frequency motor comprises a casing, a stator, a rotor, a controller and a variable-frequency module, wherein the stator and the rotor are mounted in the casing; the rotor is provided with a rotating shaft; one end of the casing is an output end part, and the other end of the casing is a non-output end part; one end of the rotating shaft is an output end, and the other end of the rotating shaft is a non-output end; the output end of the rotating shaft extends out of the output end part of the casing; an electrical installation cooling cavity is formed in the output end part of the casing, and the electrical installation cooling cavity extends in the axial direction of the rotating shaft in the aspect of height; the rotating shaft is provided with a rotating shaft extending part matched with the electrical installation cooling cavity for extending; the controller and the variable-frequency module are arranged in the electrical installation cooling cavity. The overall size of the intelligent variable-frequency motor is reduced, the integration level of the intelligent variable-frequency motor is increased, and the reliability of the intelligent variable-frequency motor is improved.
Owner:QINGDAO SANLI INTELLIGENT POWER
Technique for folding and producing adsorption type napkin paper and device thereof
InactiveCN101474891ARealize in-line printingRealize the collectionPaper/cardboard articlesHigh ratePulp and paper industry
The invention relates to a high-speed adsorption napkin paper folding and manufacturing process and device needing wire printing and folding. The prior adopted mechanical linkage vertical folding structure has the defects of complex structure, low folding accuracy, more fault points, low rate of finished products, low production efficiency, and the like. Therefore, the invention designs the adsorption napkin paper folding and manufacturing process and device. The process comprises that: the napkin paper is pulled by a traction mechanism, aligned and longitudinally folded by a longitudinal folding mechanism, smoothed by a compression roller and then aligned by an aligning mechanism, fed into an adsorption transversely folding mechanism through the traction mechanism and then aligned and transversely folded; and then the longitudinally folded paper is cut by a cutting knife roll, and manufactured into finished products by an adsorption counting mechanism and a collecting and packaging mechanism. The process and the device achieve wire printing and folding of the napkin paper conveniently and reliably, have the advantages of high folding accuracy, few fault points, high rate of finished products, high production efficiency, stable quality of the products and low production cost, and are suitable for large-scale industrialized production.
Owner:李玉龙
High-precision inner-cooling automatic control system
The invention relates to a high-precision automatic internal cooling control system for an internal mixer. An air inlet fan and an air exhaust fan are variable frequency type fans; a fixed specified value is provided for the rotating speed of the air exhaust fan according to the production technique; three to six ultrasonic sensors are arranged on the circumference above a bubble cooling line; after a signal of distance between the ultrasonic sensors to the bubble is measured and acquired, the signal is transmitted to a controller; the actual value of the bubble breadth is calculated through the controller; the actual value of the bubble breadth is compared with the specified value of the breadth; PID operation is performed to the differential value through an amplifier; a control signal is output to an air inlet fan frequency converter; the frequency converter controls the rotating speed of the air inlet fan, so that the air inlet amount and the air exhaust amount are maintained in balance. The control system has the advantages that the operation and the use are simple, the maintenance is convenient, the running is stable and reliable, the control precision is high, a large amount of raw materials is saved for the users, and the production cost is greatly reduced.
Owner:恒力石化股份有限公司
Tower rack type combined transmission oil pumping machine
The invention relates to a tower frame type combined driving oil extractor, which comprises a tower frame, a power system, a driving system, a control system, a balance weight box, a balance weight pulling rope, a driving rope, a polished rod eye and a guide wheel mechanism, wherein the driving system transmits power to a first transmission shaft after first reduction through a belt, a chain or combination of the belt and the chain, and drives a second transmission shaft after second reduction through a pair of gears, to drive the driving rope and the balance weight pulling rope which are rewound and fixed on a rope pulley, thereby a pumping rod and the balance weight box move up and down to complete operation of oil extraction. The driving system of the tower frame type combined driving oil extractor adopts the combined transmission form of gears and belts; the balance weight box adopts main and auxiliary multilevel adjustable balance weight; and the guide wheel is fixed on an operating platform through a rotating shaft, so that the tower frame type combined driving oil extractor has the advantages of simple structure, low cost, small number of fault points, convenient maintenance, suitability for various operating conditions of oil extraction, high transmission efficiency, low energy consumption and so on.
Owner:毛宏伟 +1
Real-time broken rail detecting transmitter system inside long tunnel
InactiveCN103273946AWeaken the occupancy detection functionSolve the shortcomings of being greatly affected by the environment of the track bedRailway auxillary equipmentRailway profile gaugesMicrocomputerMicrocontroller
The invention discloses a real-time broken rail detecting transmitter system inside a long tunnel. The real-time broken rail detecting transmitter system inside the long tunnel comprises an upper computer and a lower computer. The upper computer comprises a single chip microcomputer, a signal producing module, an amplitude control module, a power amplifier module, a protection module, a detection module and a communication module. The single chip microcomputer enables frequency control words to be written in the signal producing module, the signal producing module is controlled to produce sine wave detecting signals with a corresponding frequency, the sine wave detecting signals are output to a steel rail through the power amplifier module, and meanwhile the detection module collects the frequency and the voltage of the output signals. The single chip microcomputer compares the collected voltage and the collected frequency with set voltage and frequency information, when breakdowns happen, an amplitude control unit and the signal producing module are used for adjusting and enabling collected lower computer information to be transmitted to the upper computer to be displayed and to give an alarm through a communication unit. The real-time broken rail detecting transmitter system inside the long tunnel is suitable for real-time broken rail detecting inside the long tunnel with a hostile environment.
Owner:LANZHOU JIAOTONG UNIV
On-line repair method and special combined machine tool thereof
InactiveCN1454744AStable cutting processGuaranteed uptimeOther manufacturing equipments/toolsLarge fixed membersFrequency conversionEngineering
The present invention provides a kind of special combination machine tool repairing the large-scale unmovable overhead device; it possesses all kinds of function such as boring, milling and cutting and belongs to the machining device field. According to different machining object the present invention can assemble and unassemble different machine tool, many functions can be piled up. The machine tool structure adopts floor milling machine frame, and its circuit adopts one-drive-two frequency conversion control technique, to fit milling, boring and cutting device together. The machine tool can quickly move toward three-dimensional direction and lock any direction to make machining steady going. Moreover it has highly precision and simple machine structure.
Owner:NANJING NANGANG IND DEV CO LTD
External circulating fermentation technique and device thereof
InactiveCN101864454AAvoid corrosionAvoid the disadvantages of difficult maintenanceBioreactor/fermenter combinationsBiological substance pretreatmentsElectricityControl system
The invention relates to an external circulating fermentation technique and a device thereof. The technique comprises the following steps that: step (A), materials flow into a fermentation tank of the device naturally by a material outlet of a dry-type fermentation device; step (B), the materials in the fermentation tank are pumped into a heat exchange device for heating, and after the temperature rises, the materials return into the fermentation tank for heat preservation and fermentation by a circulating pump; and step (C), the materials in the fermentation tank are fermented continuously so as to generate methane, and the methane slag and methane liquid are discharged from respective outlets. The device comprises the fermentation tank, the heat exchange device, an inner film, an outer film, the circulating pump, a control system and the like; the heat exchange device is arranged outside the fermentation tank; the fermentation tank is provided with a methane outlet valve and a material outlet valve, and the top part of the fermentation tank is provided with the inner film and the outer film in sequence; the upper part of the outer film is provided with a safety valve; a gas-filled cavity is formed between the inner film and the outer film; an air blower and a pipeline are communicated with the gas-filled cavity; the lower part of the tank is provided with a temperature sensor; and the control system is electrically connected with the temperature sensor and the heat exchange device. The invention is mainly applied in dry-type fermentation techniques of crop straws.
Owner:SHENGLI OIL FIELD SHENGLI POWER MACHINERY GRP
Wireless electricity-taking car and road contactless power supply system
InactiveCN101917071APowerful vertical high-frequency electromagnetic wavesStrong alternating magnetic fieldBatteries circuit arrangementsElectromagnetic wave systemHigh energyTransformer
The invention relates to a wireless electricity-taking car and a road contactless power supply system in road traffic and transport means. In the invention, a power supply is not directly input through electric wire, while a contactless electromagnetic induction transformer arranged under a chassis of a car head indirectly absorbs electric energy in a special power supply cable embedded on a road and charges a storage battery on the car while driving the car to move. Particularly by adopting electric-magnetic-electric contactless power supply and electricity-taking technologies, a 10kV / 15-40KHz high-frequency and high-voltage cable is embedded on a road surface to generate a high-energy vertical electromagnetic wave and an alternating magnetic field; and the transformer arranged under the car is applied with comprehensive induction of the high-frequency electromagnetic wave and the alternating electromagnetic field when the transformer is close to vertical distance of 150-450mm of the cable to induce resultant current in coils and restore magnetic energy into electric energy, thus providing advancing power for the car and charging the battery on the car, and guaranteeing the car can run for longer distance with sufficient electricity after leaving the power supply road. The technology of the invention thoroughly solves the difficult problems of limited energy storage and troublesome charging of the storage battery of the existing similar cars, and explores a new way for energy conservation and emission reduction of the cars.
Owner:王瑜
Voltage tracking retainer on the basis of single-phase inversion
ActiveCN105591459AStructure does not changeDoes not affect normal workEmergency power supply arrangementsAc network circuit arrangementsVoltage amplitudePower quality
The present invention provides a voltage tracking retainer on the basis of single-phase inversion. The voltage tracking retainer on the basis of single-phase inversion comprises a sampling and control module, a power supply module and an inversion module. The sampling and control module includes a mains voltage amplitude detection sampling circuit, 220V network voltage and current phase sampling circuit, a load voltage and current detection circuit and a single chip microcomputer main control unit. The power supply module includes a rectification module, a direct current reduction voltage module, a power supply bidirectional selection controller, an intelligent charge and discharge circuit, a high frequency PWM generation circuit and a transformer push-pull output circuit. The inversion module includes a driving circuit and an inverter switching main circuit. The voltage tracking retainer on the basis of single-phase inversion is able to realize the sampling of power grid sinusoidal voltage amplitudes and the sampling of voltage and current phases through adoption of the alternating current sampling technology, and solve the voltage tracking accuracy problem through adoption of an improved double closed loop control algorithm. Through analysis of the voltage state, the voltage tracking retainer on the basis of single-phase inversion triggers a network voltage tracking retainer to invert and output the sinusoidal voltage, remains an alternating current contactor to continue actuation, overcomes the problem of poor quality of the short-time electric energy and ensures the continuous stabilization operation of a device.
Owner:ELECTRIC POWER RES INST STATE GRID JIANGXI ELECTRIC POWER CO +1
Discharging method of supporting capacitor of electric automobile driving system
InactiveCN105235525ALow costReduce points of failureElectric devicesVehicular energy storageCapacitanceCar driving
The invention discloses a discharging method of a supporting capacitor of an electric automobile driving system and belongs to the technical field of circuits in order to solve the technical problem how to fast run out charges on the supporting capacitor. The electric automobile driving system comprises the supporting capacitor, inverse three-phase axles connected with the two ends of the supporting capacitor, and a three-phase motor connected with the inverse three-phase axles. The discharging method includes the steps that the electric automobile driving system is electrically processed; the inverse three-phase axles are driven so that the three-phase motor can be electrically connected with the supporting capacitor, and the supporting capacitor is discharged through internal resistance of the three-phase motor.
Owner:ZHUZHOU CSR TIMES ELECTRIC CO LTD
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