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36 results about "Net operation" patented technology
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A radio net is three or more radio stations communicating with each other on a common channel or frequency. A net is essentially a moderated conference call conducted over two-way radio, typically in half-duplex operating conditions. The use of half-duplex operation requires a very particular set of operating procedures to be followed in order to avoid inefficiencies and chaos.
Large temperature-difference central heating system
ActiveCN101231004ALarge heating temperature differenceImprove delivery capacityHeat recovery systemsLighting and heating apparatusElectricityExternal energy
The invention relates to a central heating system with large temperature difference, which belongs to the energy field. The system comprises a steam turbine, a condenser, a steam absorption heat pump, a steam-water heat exchanger, a hot water absorption heat pump, a water-water heat exchanger as well as a connecting pipe and accessories. The invention is characterized in that the temperature difference of the heat net supply is large, and is about one time higher than the conventional heat net operation, thus the transmission capacity of the heat net is greatly increased, and at the same time, no heat preservation and thermal stress compensation problems exist as the backwater temperature of the heating is low, thereby reducing the investment of the backwater pipeline network and the whole pipeline network; the steam turbine is utilized to discharge steam and preheat the backwater of the large heat net, and circulating cooling water is utilized to be taken as the low level heat energy of the absorption heat pumps. The invention has the advantages that the residual heat produced in the electricity generating process of a power plant is recycled to the greatest extent as much as possible, the combination mode of the hot water absorption heat pump and the water-water heat exchanger is adopted at the end to heat the hot water of the secondary heat net supply, and the temperature difference of the supply-water and the backwater of the large heat net are increased, at the same time, the heat net does not need external energy to be the driving force.
Owner:TSINGHUA UNIV +1
Centralized remote electric power system
InactiveCN101299517ASolve space problemsSolve the problem of hotspot areas where the website cannot be opened due to mass disputesOverhead installationDistribution substationsElectric power transmissionElectric power system
The invention relates to a centralization remote power feeding system including a primary device machine room arranged with wireless primary devices and power supply primary devices, which include an inverter and a transmission primary device for converting the external electricity 380 V industrial electricity into the -48 to 24 V DC to access to the wireless primary devices to cause the wireless primary devices operate normally; the -48 to 24 V DC is converted to the 220-380V AC through the inverter of the power supply primary devices, then the power is transmitted to the farend unit of the farend covering system of the base station part newly built through the common rod transmission mode of the power transmission line and the optical fiber transmission line, providing the stable power to the farend unit, thereby completing the construction of the whole base station. The invention reduces the building size of the base station, saves the project invest and advances the net operation safety reliability, which is applied in the signal covering of the road, the subway , the tunnel of the city and the small countryside base station.
Owner:CHINA MOBILE GRP GUANGDONG CO LTD
Lining segment structure of city subway up-down section overlapping shield tunnels
ActiveCN104612711AEffective reinforcementMeet the performance of grouting constructionUnderground chambersTunnel liningStress reliefShield tunneling
The invention discloses a lining segment structure of city subway up-down section overlapping shield tunnels. The structure can satisfy construction loads such as the weight of a shield tunneling machine, the pressure supplied by the shield tunneling machine and stratum excavation stress relief under construction and structure safety and deformation under the effect of water and soil pressure and subway train loads during operation, satisfy construction performance of secondary slip casting on the back of a lining segment structure wall and synchronous and uniform slip casting of interlayers between the up-down overlapping tunnels, and at last satisfy the waterproofness and durability of tunnel use. The lining segment structure can be applied to V-level and VI-level strata in a city subway, the separation distance of the up-down overlapping section tunnels is 2 m-3 m, the shield excavation order of down first and then up is used for supplying technical assurance to the segment structure of the city subway up-down section overlapping shield tunnels under the conditions of up-down overlapping complex lines, and the section overlapping tunnels can better solve the problems of limit of surrounding environment, narrow boundary lines of roads and requirements for a net operation transfer function and is applied widely.
Owner:ZHEJIANG PROVINCIAL INST OF COMM PLANNING DESIGN & RES CO LTD +1
Dynamic management and netting of transactions using executable rules
Systems and methods for dynamically managing and netting transactions based on one or more sets of netting rules are disclosed. The present invention dynamically associates transactions with one or more collections based on the execution of netting rules to identify transactions that may be ideal for netting and to perform netting operations and calculations accordingly. The present invention may execute the netting rules according to the priority of the netting rule within a rule hierarchy and utilizes unique solutions allowing for the efficient processing of transactions even as netting rules are created, modified and removed from time-to-time. In addition, embodiments of the disclosed netting system utilize denormalized sets of data and maintain a complete audit trail for all operations.
Owner:JPMORGAN CHASE BANK NA
Pantograph-catenary operation state online detection system and method based on stereoscopic vision
ActiveCN109584238AHigh speed acquisitionGuaranteed uptimeImage enhancementImage analysisCombined methodCalibration result
The invention relates to a pantograph-catenary operation state online detection system and method based on stereoscopic vision. The pantograph-catenary operation state comprises a pantograph-catenarycontact point movement position and pantograph offset. The detection method comprises the following steps: designing a stereoscopic vision sensor structural body placed on a vehicle roof; The inertialnavigation system and the trigger device combined with the odometer are used for obtaining information such as the vehicle speed, the GPS and the deflection degree of the vehicle body at the same time of image collection. The system also comprises two high-performance servers containing a core detection algorithm and related electrical and mechanical structures. Actual operation, The detection system collects a high-speed image entering the server, an image contact point is positioned by using a detection and tracking combined method, a three-dimensional visual sensor obtains a three-dimensional track of a pantograph-catenary contact point corresponding to an image sequence according to a pre-calibration result, and meanwhile, the offset of the pantograph is solved according to information provided by inertial navigation. The method is suitable for on-line detection of bow net operation conditions in actual operation of the high-speed train.
Owner:BEIHANG UNIV
Face detection method and system
InactiveCN110321841ALow costReduce computationImage enhancementImage analysisFace detectionSobel edge detection
The invention relates to a face detection method and system. The method comprises the following steps: acquiring a to-be-detected original image; carrying out skin color detection and foreground detection on an original image to extract a suspected face area in the original image, and drawing a target box for the suspected face area; defining the size of a target frame, and screening the target frame by adopting a Sobel edge detection algorithm to filter out non-target frames in the target frame; sequentially performing R-Net operation and O-Net operation are on the filtered target frame to obtain a target frame including a real face region and five feature points in each of the target frames for indicating a face contour.According to the technical scheme, a traditional MTCNN network is improved, a skin color detection method and a foreground detection method are combined, a suspected face area is extracted, the operand is greatly reduced under the condition that the frame scale of anoriginal image is not reduced, the detection precision and the operation time are balanced, the cost of face detection equipment is reduced, and higher universality is provided.
Owner:CHENGDU DINGDING TECH CO LTD
Line loss analysis method based on power distribution automation platform
ActiveCN103036229AImprove timelinessGuaranteed quasi real-timeAc network circuit arrangementsSimulationOperation mode
The invention discloses a line loss analysis method based on a power distribution automation platform. The line loss analysis method based on the power distribution automation platform is characterized by comprising the following steps: getting basic data, integrating relative data with different types of a plurality of systems by means of an information interact bus carrier and an interface message and is unified, analyzed and shared to the power distribution automation platform so that the basic data can be provided for analysis and application of line losses, and automatically getting the interface data before two days everyday; getting operation mode data, the whole net operation modes are recorded by the power distribution automation platform everyday, when the daily line losses is calculated, times are adjusted according to an operation mode of a line each day and an operation mode section at a certain moment is selected to be used as a computational frame; calculating line losses, according to the gotten interface data and the operation mode data each day, the line losses before two days is calculated and analyzed so that accurate instantaneity of calculation and query of the line losses are ensured. The line loss analysis method based on the power distribution automation platform can achieve the accurate instantaneity of calculation and analysis of the net distribution line losses and ensure timeliness and accuracy of calculation.
Owner:NARI TECH CO LTD +2
Thermal infrared imager and laser radar based thermal infrared bow net operation monitoring system
InactiveCN105681735AWon't add weightReal-time theoretical basisTransmission systemsClosed circuit television systemsElectricityContact network
The invention discloses a thermal infrared imager and laser radar based thermal infrared bow net operation monitoring system. The thermal infrared imager and laser radar based thermal infrared bow net operation monitoring system comprises a thermal infrared imager, a laser radar, a visible light vidicon, a vehicle-mounted server, a massive mobile hard disk, a GPRS vehicle-mounted transmission module and a data inquiry analysis system. The thermal infrared imager, the laser radar and the visible light vidicon are arranged on the top of a locomotive and are connected with the vehicle-mounted server in the locomotive; the GPRS vehicle-mounted transmission module and the data inquiry analysis system are also connected with the vehicle-mounted server; and the massive mobile hard disk is arranged on the vehicle-mounted server. As temperature distribution of a bow net is detected by adopting the thermal infrared imager, the height of a conductor and a stagger value are detected by adopting the laser radar, and the parameters are transmitted to a scheduling room in real time through the GPRS data transmission network, installation of a detection sensor on a head of a pantograph is unnecessary, the weight of the head of the pantograph is not added, and accurate and real-time theoretical basis is provided for maintenance and post-accident inquiry of a contact network.
Owner:CHENGDU JETCOM TECH
Method for processing IMS session and module with query calling session controlling function
ActiveCN1983999AImprove satisfactionReduce risks in operationsData switching by path configurationSession controlComputer science
This invention involves a kind of conversation dealing method and I-CSCF module. When the S-CSCF is detected by the called attribution domain I-CSCF module or the contracted users server to be in the useless condition in the route process, the contracted users server will send to the I-CSCF the S-CSCF Competence Set information; after it receives the Competence Set information, I-CSCF will choose another S-CSCF, then the subsequent user will be called to the chosen S-CSCF to process. This invention resolves the problem that because of the accident in the S-CSCF, it cannot supply the user with the registering business, especially in the PSI case. As the result, the risk in the net operation is reduced, the reliability of the IMS network is enhanced, and the user satisfaction is improved.
Owner:HUAWEI TECH CO LTD
Contact net inspection device
The invention relates to a contact net inspection device. A main platform is arranged on the upper part of a main column. The rear ends of horizontal suspension arms are installed on the main column, and side columns are arranged at the front ends of the horizontal suspension arms. The side platforms are installed on the side columns. The main column consists of M retractable structures. A main oil cylinder for driving the main platform to lift is arranged on the lower part of the main platform. The side column consists of N retractable structures. Side oil cylinders for driving the side platforms to lift are arranged on the lower parts of the side platforms capable of rotating around the centers of the side columns. The main platform is provided with a suspension arm oil cylinder or a hydraulic motor for driving the horizontal suspension arms to drive the side platforms to rotate around a hinged point of the main column. The device provided by the invention is installed on a contact net operation trolley and can replace original rotary lifting operation platform for maintaining and preserving the contact net for electrified railways. The main platform is lifted to maintain the contact leads and parts on the lower part of the contact net. The side platforms can avoid the contact net lead and are lifted to the highest position. The device provided by the invention is convenient in operation, agile in function and compact in structure.
Owner:GEMAC ENG MACHINERY
Subway vehicle pantograph carbon slide plate abrasion estimation method and service life prediction method
ActiveCN109783929AImprove securityShorten the timeSpecial data processing applicationsRate curveSlide plate
The invention provides a subway vehicle pantograph carbon slide plate abrasion estimation method and a service life prediction method, which are used for solving the problem that the carbon slide plate abrasion cannot be accurately estimated in the prior art. The invention discloses a wear estimation method and a life prediction method. The method comprises the following steps: calculating the abrasion quantities of the carbon slide plate at different positions within a certain running mileage by combining the arrangement mode of a carbon slide plate abrasion rate curve and a contact line to obtain an abrasion profile transversely distributed along the carbon slide plate, calculating and visualizing the abrasion profile distribution of the carbon slide plate, and further predicting the service life of the carbon slide plate. According to the invention, the wear degree of the carbon slide plate is pre-judged; The carbon slide plate grinding and replacing device has the advantages that targeted carbon slide plate grinding or replacing suggestions are provided for maintenance departments, time and economic cost are reduced, areas with severe abrasion of the carbon slide plate are obtained, corresponding technical adjustment is performed through cause analysis, grooves are prevented from being formed in the carbon slide plate, accordingly, the safety of bow net operation is improved, and certain economic benefits and social benefits are achieved.
Owner:BEIJING JIAOTONG UNIV +1
Method for resolving 1X/HRPD double mode terminal double net operation
InactiveCN1784066AExtend standby timeLoad balancing controlNetwork traffic/resource managementNetwork data managementDouble networkDual network
This invention relates to a method for solving double network operation of Ix / HRPT bimodule terminal. It contains using spare ACCOLC of Ix configuring overload grade instruction of bimodule terminal, the HRPD overlaid Ix BBS system sending total service redirection message, terminal using state response message reporting roaming message. Said invention uses retention value of access overload grade instruction to label Ix / HRPD bimodule terminal. Said bimodule terminal searches HRPD signal in area having HRPD covering for raise terminal standby time, uses Ix system state response message reporting terminal access overload instruction to network to realize double network load equalization control.
Owner:BEIJING SAMSUNG TELECOM R&D CENT +1
Dynamic detection system of overhead line system
ActiveCN106017576ATimely detection of abnormal defectsImprove detection efficiencyMeasurement devicesEngineeringHigh pressure
The invention discloses a dynamic detection system of an overhead line system. The dynamic detection system comprises high pressure data collection portions arranged on the two sides of the roof of a locomotive, a low pressure data collection portion arranged in the middle of the roof of the locomotive, and a data processing portion arranged inside the locomotive. Each high pressure data collection portion comprises a storage battery, a current controller electrically connected with the storage battery, a current transformer, a stagger value detection unit and a hard spot detection unit, wherein the current transformer, the stagger value detection unit and the hard spot detection unit are connected with the current controller. The low pressure data collection portion comprises a visual camera, an infrared camera, a GPS positioning module, a 4G wireless module and an electric arc unit which are connected with the data processing unit. The data processing portion comprises an image processing host, a signal collector and a UPS, wherein the signal collector and the UPS power source are connected with the image processing host. The system can achieve online detection of the overhead line system and a bow net operation state in real time in an all-weather mode and can timely find abnormal defects existing in the overhead line system.
Owner:成都骏盛科技有限责任公司
Dynamic management and netting of transactions using executable rules
Owner:JPMORGAN CHASE BANK NA
Spatial measurement method for seine encirclement
ActiveCN105509835BSolve the problem of rounding up space measurement difficultiesFacilitate optimization researchContainer/cavity capacity measurementProtractorInfrared
Owner:EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
Sail type net mouth scissoring and assembling method
The present invention is sail type standing net mouth shearing and assembling method and relates to marine fishing production. The present invention solves the technological problems of making reasonable net stress, reducing net damage and relaxing, increasing effective net water filtering area, and raising net operation efficiency and safety. The technological scheme includes net piece shearing and upper and lower headrope assembling; and features remaining certain amount of meshes on two sides of the net mouth, shearing towards the center in the slopes of 1-3, 1-5 and 1-7, and finally retaining 22 meshes in the center so as to horizontal mesh takeup in the length of 0.80 upper or lower headrope and upper and lower horizontal headrope coefficient of 0.2. the method of the present invention is suitable for sail type standing net for marine fishing production.
Owner:EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
Systems and methods for optimizing network transaction throughput using batched transaction netting
Systems and methods for optimizing netting operations of server device are disclosed. In one embodiment, a method is disclosed comprising receiving a plurality of transactions; building one or more currency pair positions based on the transactions; breaking down each of the currency pair positions into individual currency positions; netting the individual currency positions; identifying a plurality of high-priority currency pairs based on the netted individual currency positions; converting the high-priority currency pairs to an absolute value equivalent using current market rates; identifying a largest absolute value equivalent of the high-priority currency pairs; generating a foreign exchange order for the largest absolute value equivalent; and executing the foreign exchange order.
Owner:WISE TRADING TECH INC
DEH control method for single turbine isolated network operation
ActiveCN109066780AOvercome the defect of not being able to control the operation of a stand-alone isolated networkImplementation of defects that cannot control the operation of a single machine isolated networkSingle network parallel feeding arrangementsSwitching signalPower grid
A DEH control method for single turbine isolated network operation relates to a single turbine control method in order to solve problem that the existing DEH cannot be used to control the operation ofsingle-machine isolated network. When the steam turbine generator set is detected as a de-netting state signal, or the steam turbine rotational speed signal is greater than 3035RPM, or the steam turbine rotational speed signal is less than 2965RPM, or the solitary network manual input signal is detected, the invention controls the solitary network corresponding to the corresponding steam turbinegenerator set to be input into a large power network. When it is detected that the generator set corresponding to the steam turbine is in the grid-connected state and the rotational speed of the steamturbine is 2965 RPM <= steam turbine speed <= 3035 RPM, or when manual cutting is required, the grid part corresponding to the corresponding generator set of the steam turbine is controlled to be cutout from the large grid to form an isolated grid. And then the partial de-netting operation signals of the power grid is collected corresponding to the corresponding steam turbine generator sets, thesteam turbine speed signals and the secondary frequency modulation switching signals; The output of secondary frequency modulation is superposed with the actual rotational speed of steam turbine andthe primary frequency modulation is regulated. The method is suitable for the switch-on and switch-off control of single turbine isolated network.
Owner:HARBIN TURBINE +1
A lining segment structure for overlapping shield tunnels in the upper and lower sections of urban subways
ActiveCN104612711BEffective reinforcementMeet the performance of grouting constructionUnderground chambersTunnel liningEngineeringStress relief
The invention discloses a lining segment structure of city subway up-down section overlapping shield tunnels. The structure can satisfy construction loads such as the weight of a shield tunneling machine, the pressure supplied by the shield tunneling machine and stratum excavation stress relief under construction and structure safety and deformation under the effect of water and soil pressure and subway train loads during operation, satisfy construction performance of secondary slip casting on the back of a lining segment structure wall and synchronous and uniform slip casting of interlayers between the up-down overlapping tunnels, and at last satisfy the waterproofness and durability of tunnel use. The lining segment structure can be applied to V-level and VI-level strata in a city subway, the separation distance of the up-down overlapping section tunnels is 2 m-3 m, the shield excavation order of down first and then up is used for supplying technical assurance to the segment structure of the city subway up-down section overlapping shield tunnels under the conditions of up-down overlapping complex lines, and the section overlapping tunnels can better solve the problems of limit of surrounding environment, narrow boundary lines of roads and requirements for a net operation transfer function and is applied widely.
Owner:ZHEJIANG PROVINCIAL INST OF COMM PLANNING DESIGN & RES CO LTD +1
Measuring method for round-up space of purse seine
ActiveCN105509835ASolve the problem of rounding up space measurement difficultiesFacilitate optimization researchContainer/cavity capacity measurementProtractorWater entry
The invention provides a measuring method for a round-up space of a purse seine. A depth finder, a protractor and an infrared distancer are adopted. The measuring method is characterized by comprising the steps that the depth finder is fixed to a foot line, and the sedimentation depth of a foot line closing point is actually measured; the infrared distancer measures the spacing distance between a floating ball and a seine ship; the protractor measures the purse line water entry angle; the spatial position of the foot line closing point is determined by applying the purse line water entry angle and the sedimentation depth of the foot line closing point; a catenary equation of netting of any portions of the purse seine is solved by applying the horizontal spacing distance between the floating ball and the ship body and the spatial position of the foot line closing point; the horizontal spacing distance between the netting at any water depth and the foot line closing point when the foot line is closed is calculated according to a curve equation. Accurate estimation data is supplied to purse seine operation performance evaluation, the problem that measurement of the round-up space of the purse seine is difficult is solved, and net operation performance optimization study is facilitated.
Owner:EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
Wind generating set high-voltage ride-through control method, device and system
ActiveCN108879767AGuaranteed uptimeGuaranteed stabilitySingle network parallel feeding arrangementsWind energy generationControl signalPower grid
The invention discloses a wind generating set high-voltage ride-through control method, device and system. The method comprises the steps that a regional power grid controller sends a high-voltage ride-through control command when the voltage of the power grid is higher than a preset threshold value; a wind power plant central controller is used for ranking the predicted power values of all the wind generating sets according to the priority from large to small, and generating and sending a first high-voltage ride-through control signal and a second high-voltage ride-through control signal, wherein the first high-voltage ride-through control signal is used for controlling the wind generating sets at the front N positions to run at a preset high-voltage ride-through operation strategy when the voltage of the power grid is higher than the preset threshold value, and the second high-voltage ride-through control signal is used for controlling the other wind generating sets to perform off-net operation when the voltage of the power grid is higher than the preset threshold value; and enabling a controller of the wind generating sets to receive the first or second high-voltage ride-throughcontrol signals and to perform corresponding control actions. By implementing the method, the normal operation of the power grid can be ensured when the minimum high-voltage ride-through software andhardware are adopted at each wind generator side.
Owner:INNER MONGOLIA POWER GRP
Method for rejecting 1x paging transmission in high speed grouping data network
ActiveCN101222420AImprove operational capabilitiesAccurate transmissionRadio/inductive link selection arrangementsData switching networksDual networkPaging
The invention discloses a method for transferring a 1x paging which is refused in a high speed group data network. The method aims at an HRPD of an SC / MM positioned at a PCF and applies a Secondary Color Code mechanism to the method so as to ensures that an AN registered by an MS / AT sends an A13-paging request message to other peripheral ANs. A mobile phone is paged by all the ANs; meanwhile, some new messages are added to complete the refused flow. In regard to the MS / AT with a plurality of AN borderlines, the invention ensures that the MS / AT in a state of idleness or hibernation effectively receives the service paging from the 1x network in a plurality of AN borderline areas of the HRPD and refuses the 1x service according to the choice of a user as well as guarantees the ability of the dual net operation.
Owner:ZTE CORP
Method for power generation by waste heat of coal gas
InactiveCN101344016AEmission reductionSave powerBlast furnace componentsBlast furnace detailsAlternating currentNet operation
The invention relates to a method for using the rest heat of coal gas to generate electricity; the method comprises the following steps: the rest coal gas of a blast furnace is purified, recycled and conveyed to a boiler of an electric power plant for burning; the generated steam is distributed to a gas turbine for rotation-impulsing, so as to drive a capacity generator to rotate, and generate alternating current at the three phases of the two ends of the generator in a mode of self-excitation, and the electricity is conveyed to users by a single-net operation for use after power transformation; the invention reduces the discharge of harmful gas, recoveries and uses the gas for electricity generation, saves the quantity of electricity, reduces the consumption, saves the electricity cost and does not consume electric resources additionally.
Owner:NANJING BANQIAO SLAG
Line loss analysis method based on power distribution automation platform
ActiveCN103036229BReduce Data Maintenance EffortsWork lessAc network circuit arrangementsSimulationOperation mode
Owner:NARI TECH CO LTD +2
Volume measurement device for plant leaves, and measurement method for same
PendingCN107560682APrevent floatingTo achieve the purpose of marking the height of the water surfaceContainer/cavity capacity measurementGraduated cylinderEngineering
The invention relates to a volume measurement device for plant leaves. The device comprises a diameter-adjustable imbedding groove, a measuring cylinder placed in the diameter-adjustable imbedding groove, an operation board and a water container, wherein a leaf stopping net, a buoy and a water guide pipe are disposed in the measuring cylinder; a water valve is disposed on the water guide pipe, andtail end is inserted into the water container; a battery groove with a built-in battery and an operation rod of the leaf stopping net are disposed on the back face of the operation board, and a display screen, a zero clearing key, a reading key, a computation key, a water adding key and a leaf stopping net operation key are disposed on the front face; one end of the operation rod of the leaf stopping net is connected to the leaf stopping net and the other end is connected to the leaf stopping net operation key; a battery cover is disposed on the battery groove; the buoy is connected to the reading key by a sensing line; the water adding key is connected to the water valve; and the battery is connected to the display screen, the zero cleaning key, the reading key, the computation key, thewater adding key, the leaf stopping net operation key, the water valve and the leaf stopping net operation rod by circuits. The invention also discloses a measurement method for the device. The devicedisclosed by the invention is carried easily; and measurement speed is quick.
Owner:COLD & ARID REGIONS ENVIRONMENTAL & ENG RES INST CHINESE
The Method of Secondary Development in Industrial Configuration Software
ActiveCN103309718BExtensibilityImprove acceleration performanceProgram controlMemory systemsExtensibilityCommon Language Runtime
Owner:SHANGHAI ZHENHUA HEAVY IND
Apple network device
InactiveCN107892008BImprove work efficiencyIndividual articlesPackaging fruits/vegetablesCircular discEngineering
Owner:KAIFENG UNIV
CATV (Community Antenna Television) insertion sheet type fixed attenuator identification circuit
ActiveCN109030900AEfficient identificationResistance/reactance/impedenceElectrical testingComputer moduleEngineering
The invention discloses a CATV (Community Antenna Television) insertion sheet type fixed attenuator identification circuit, which comprises an insertion sheet type fixed attenuator, a power supply module, a detection module and an MCU (Microprogrammed Control Unit) identification module, wherein the power supply module is used for supplying power to the identification circuit; the detection moduleis used for detecting the partial pressure value of an output circuit; the MCU identification module is used for automatically judging which the attenuator of a value the detected partial pressure value belongs to; the power supply module is connected to the input end of the insertion sheet type fixed attenuator; the detection module is connected to the output end of the insertion sheet type fixed attenuator; and the detection module is connected with the MCU identification module. By use of the identification circuit, the CATV insertion sheet type fixed attenuator can be effectively identified so as to remotely judge whether a net operation is correct or not, and problems can be subjected to positioning and fixed point analysis when faults happen.
Owner:APPLIED OPTOELECTRONICS INC
Method for Improving Power Quality of Power Grid in Isolated Grid Operation Before and After Start-up and Stop of High-power Equipment
ActiveCN106253325BPrevent crashAvoid wastingSingle network parallel feeding arrangementsAc network load balancingPower qualityTransformer
The invention discloses a method for improving the electric energy quality of a power grid in isolated net operation before and after starting and stopping of high-power equipment. An energy storage system is added into a power grid in isolated net operation and consists of a grid-connected switch, an energy storage feeding transformer, a bidirectional inverter and an energy storage device. The energy storage device is connected to a high-voltage bus of a self-generation power plant by the bidirectional inverter, the energy storage feeding transformer, and the grid-connected switch; and the high-voltage bus of the self-generation power plant is used for completing electric energy collection and distribution. The method has following beneficial effects: on the basis of the absorption process of the electric energy by the energy storage system, problems of grid frequency rising and voltage rising after working stopping of the high-power equipment of the power grid can be solved; and energy wasting caused by an excessive grid power phenomenon can be avoided. On the basis of the releasing process of the electric energy by the energy storage system, problems of grid frequency reduction and large voltage drop due to starting of the high-power equipment of the power grid can be solved; and grid backout caused by an insufficient grid power can be avoided.
Owner:STATE GRID HEBEI ENERGY TECH SERVICE CO LTD +2
Automatic control device for radiating and ventilating facility of engine of contact net operation vehicle
InactiveCN102505983AImprove working environmentAccurately control the ventilation volumeCoolant flow controlMachines/enginesAutomatic controlSignal processing circuits
The invention relates to the control field of radiating and ventilating facilities of engines of contact net operation vehicles, in particular to an automatic control device for a radiating and ventilating facility of an engine of a contact net operation vehicle. The radiating and ventilating facility of the engine of the contact net operation vehicle is controlled intelligently, the automatic control device comprises a master control module, a signal acquisition module, an actuating module and a power module, an output end of the signal acquisition module is connected with a signal acquisition input end of the master control module, a control signal input end of the actuating module is connected with a control signal output end of the master control module, the signal acquisition module comprises a signal processing circuit, a temperature sensor, a speed sensor and a direction distinguishing sensor, and output ends of the temperature sensor, the speed sensor and the direction distinguishing sensor are connected with the signal acquisition input end of the master control module by the signal processing circuit. The automatic control device for the radiating and ventilating facility of the engine of the contact net operation vehicle is reasonable in structure and fine in service effect, can effectively reduce work intensity of operators of the operation vehicle, and improves technological content of the contact net operation vehicle.
Owner:CRRC TAIYUAN CO LTD
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