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Liquid crystal display substrate and preparation method thereof and liquid crystal display device
InactiveCN103033992AUniform thicknessMiniaturizationNon-linear opticsLiquid-crystal displayEngineering
The invention provides a liquid crystal display substrate and a preparation method thereof and a liquid crystal display device, which belong to the technical field of alignment films and can be used for solving the problem of difficulty in miniaturizing and realizing narrow frame design for a liquid crystal display device due to the presence of a Halo region on the edge part of the conventional alignment film. The liquid crystal display substrate comprises a substrate and an alignment film arranged on the substrate, wherein the substrate is provided with a display region for displaying; the substrate is provided with a retaining wall positioned on the periphery of the display region; the alignment film covers the display region, and the outer edge of the alignment film is contacted with the retaining wall; and the thickness of the alignment film is smaller than or equal to the height of the retaining wall. The liquid crystal display substrate preparation method provided by the invention is used for preparing the liquid crystal display substrate. The liquid crystal display device provided by the invention comprises the liquid crystal display substrate. The liquid crystal display substrate and the preparation method can be applied to a liquid crystal display device, in particular to a thin film transistor array liquid crystal display device.
Owner:BOE TECH GRP CO LTD +1
Frame structure for a motor vehicle, rear frame structure, and vehicle body
InactiveCN102530082ALarge structural spaceFirmly connectedUnderstructuresSuperstructure subunitsVehicle frameEngineering
A frame structure is provided for a motor vehicle having at least two longitudinal girders, each having a first longitudinal section and a second longitudinal section, which are at an angle to one another, so that in the installed state of the frame structure in a motor vehicle, the first longitudinal section lies essentially horizontally below a floor plate of the vehicle body and the second longitudinal section extends essentially upward and, viewed in the forward travel direction, the first longitudinal section is arranged behind the second longitudinal section. It is provided that beginning in the area of the transition from the second longitudinal section to the first longitudinal section or an area adjacent thereto, the longitudinal girders extend at least partially away from one another in the direction of the first longitudinal section. Furthermore, the invention relates to a rear frame structure and a vehicle body.
Owner:GM GLOBAL TECH OPERATIONS LLC
Single-ended input and differential output parallel dual-frequency low noise amplifier and design method thereof
ActiveCN102355200AAchieve improvementIncrease system areaAmplifier modifications to reduce noise influenceDifferential amplifiersDual frequencyAudio power amplifier
The invention discloses a single-ended input and differential output parallel dual-frequency low noise amplifier (LNA) and a design method thereof. The LNA can be applied to a digital TV, wireless communication and a navigation receiver and mainly comprises an input matching network, a main amplification circuit, an output network and a single-ended to differential circuit. The main amplification circuit adopts a cascode structure and has favorable reverse isolation degree; the input matching network enables the LNA to realize impedance matching and noise matching simultaneously in input stage and dual frequency ranges, and thus the noise performance of the circuit is improved at the same time of ensuring the maximum power transmission; and the singled-ended to differential circuit ensures that the LNA can be directly cascaded with a front-end antenna and a rear-end mixer circuit and easy to integrate. The LNA disclosed by the invention not only has a simple design, but also ensures that the system power consumption and area are reduced due to parallel dual-frequency receiving.
Owner:BEIHANG UNIV
High-frequency high-voltage transformer structure
InactiveCN103050227ASmall leakage inductanceReduce leakage fluxTransformers/inductances coils/windings/connectionsFixed transformers or mutual inductancesForce linesButt joint
Disclosed is a high-frequency high-voltage transformer structure. A magnetic core of a transformer comprises two U-shaped magnetic cores (1) in butt joint, primary windings (5) and secondary windings (4) are respectively provided with a two-section structure and are wound on two primary winding frameworks (3) and two secondary winding frameworks (2) respectively, and the secondary winding frameworks (2) are sleeved outside the primary winding frameworks (3) to form a coaxial structure. The two primary winding frameworks and the two secondary winding frameworks are sleeved on magnetic arms in the height direction of the U-shaped magnetic cores (1), the primary windings are connected in series, the secondary windings are connected in series, and magnetic force lines generated by the windings are in the same direction in the magnetic cores by a series connection direction. The primary windings and the magnetic cores (1) of the transformer are insulated by the primary winding frameworks (3), and the secondary windings and the primary windings are insulated by the wall thicknesses of the secondary winding frameworks (2) and gaps among the primary windings (5) and the inner walls of the secondary winding frameworks. By the aid of a set of fixtures (6 and 7), the two magnetic cores in butt joint are clamped, and the transformer is fixed.
Owner:INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
Off-axis TMA optical system for reducing processing and resetting difficulty
InactiveCN102062936AMeet the requirements of image qualityDesigned for easy implementationOptical elementsOptical propertySpace optics
The invention relates to an off-axis three-mirror-anastigmatic (TMA) optical system for reducing processing and resetting difficulty, relates to the technical field of space optics, and solves the problems that the conventional off-axis TMA optical system difficultly reaches optical imaging indexes due to difficulty in processing, detection and resetting. In the system, a secondary reflecting mirror is designed to be a sphere, a main reflecting mirror and a third reflecting mirror are designed to be aspheric surfaces, a quadratic term coefficient is set as zero, the main reflecting mirror and the third reflecting mirror are high-order aspheric surfaces containing a six-order term and an eight-order term respectively; thus, the off-axis TMA optical system reaches diffraction limit optical property. When a transfer function is 50 lp, imaging quality is approximately 0.6, and Streh1 Rate is increased from 0.91 to 0.93; surface shape processing tolerance is expanded from Lambda / 50 to Lambda / 40; and the resetting tolerance of the main reflecting mirror, the secondary reflecting mirror and the third reflecting mirror is expanded by four times. By the system, the processing and resetting difficulty is reduced; and the system can conveniently realize the optical property of diffraction limit.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
Coal gasification furnace for recycling industrial wastewater and gasification process
InactiveCN108329952ALower oxygen consumptionSolve the pollution of the environmentGasification processes detailsGranular/pulverulent flues gasificationIndustrial effluentSlag
The invention discloses a coal gasification furnace for recycling industrial wastewater. The coal gasification furnace comprises a pressure-bearing furnace body, the top of the furnace body is provided with a top cover which is connected by a flange, a waste water burning nozzle and mounting openings of three coal burning nozzles surrounding the waste water burning nozzle are arranged in the center of the top cover, a reactor is isolated in the inner part of the furnace body by a water cooling wall, and a chilling water spraying ring is arranged below the slag opening in the bottom of the reactor, and a chilling chamber is provided with a descending pipe and an ascending sleeve pipe. The invention further relates to a gasification process using the gasification furnace.
Owner:北京瑞达科博技术有限公司
Design method of wind-farm digitization platform and processing equipment
InactiveCN108491649AFacilitates continuous optimizationEasy to displayDesign optimisation/simulationSpecial data processing applicationsProcess equipmentDimensional modeling
The application provides a design method of a wind-farm digitization platform and processing equipment, which are used for obtaining the three-dimensional wind-farm digitization platform. The design method of the wind-farm digitization platform provided by the application includes: acquiring a first three-dimensional model by processing equipment, wherein the first three-dimensional model is a target geographic-three-dimensional-model, and the target geographic-three-dimensional-model corresponds to a target location; constructing a three-dimensional model of a wind farm on the first three-dimensional model by the processing equipment to obtain the second three-dimensional model; and importing the second three-dimensional model into a geographic information system by the processing equipment to obtain the wind-farm digitization platform. Relevant designers are enabled to be freed from repetitive and low-efficient traditional two-dimensional drawing design, efficiency of engineering design and design accuracy are improved through three-dimensional design at the same time, the three-dimensional wind-farm digitization platform can also better display and analyze design products, and realization of design of smart wind farms and continuous optimization of the wind farms are facilitated.
Owner:深圳智润新能源电力勘测设计院有限公司
A flow guiding polarized plate of fuel battery
The invention relates to guiding board of fuel battery, said guiding board is guiding two-way board, said guiding two-way board comprises positive air guiding groove board; negative hydrogen guiding groove board and middle cooling flow interlayer, said guiding two-way board possesses flow hole for air, hydrogen, cooling liquid and guiding groove which is connected between flow holes; said flow hole which air or hydrogen in and out is single hole for in, two or more hole for out, the guiding groove which is designed between air or hydrogen holes is designed to direct flow groove or nearly direct flow groove; said flow hole for cooling liquid is single hole or double holes or more holes for in, two holes or more holes for out, guiding groove which is set between flow hole for cooling liquid is designed to direct flow groove or nearly direct flow groove. Comparing with current technique, the invention can decrease resistance and pressure reduction, liquid can flow on liquid field evenly, effective area can be increased; jam of guiding groove can be avoided.
Owner:SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
Preparation method of hydroxyl-terminated polymethylphenyl siloxane with controllable viscosity
InactiveCN111072969AViscosity is easy to controlThe dosage is easy to controlPolymer sciencePtru catalyst
The invention provides a preparation method of hydroxyl-terminated polymethylphenyl siloxane with controllable viscosity, which comprises the following steps: A) mixing methylphenylcyclosiloxane and methylcyclosiloxane, and dehydrating under vacuum conditions to obtain a dehydrated material; B) adding a double-hydroxy-terminated siloxane end-capping agent and a basic catalyst into the dehydrated material, heating to 90-110 DEG C, reacting for 3-6 hours, continuously heating to 120-160 DEG C, and introducing nitrogen to break the medium, with the dosage of the double-hydroxyl-terminated siloxane end-capping reagent calculated according to a formula (1) and accounting for 0.05%-5% of the total weight of the ring body; and C) removing low-boiling-point substances in the reaction product obtained in the step B) under a vacuum condition to obtain the viscosity-controllable hydroxyl-terminated polymethylphenyl siloxane with the structure shown in the formula I. The preparation method solvesthe problem of poor compatibility between the end-capping agent and the raw material, and finally, realizes the controllable viscosity of a methylphenyl 108 adhesive.
Owner:ZHEJIANG XINAN CHEM INDAL GROUP
Low-complexity millimeter wave multicast beamforming method
ActiveCN110365388ADesigned for easy implementationReduce complexitySpatial transmit diversityTransmission monitoringMolecular arrayComputation complexity
The invention discloses a low-complexity millimeter wave multicast beamforming method. According to the method, multicast communication for multiple users is realized by designing a beam forming vector. The millimeter wave antenna array is divided into a plurality of sub-arrays, each sub-array forms a sub-wave beam which points to different users, and phase shift factors are added to different sub-arrays to improve the design flexibility. Through the molecular array, the number of variables needing to be optimized is greatly reduced, and the calculation complexity is greatly reduced while theperformance is close to that of an existing scheme.
Owner:SOUTHEAST UNIV
Narrow-face copper plate for asymmetric slab continuous casting chamfering crystallizer
The invention provides a narrow-face copper plate for an asymmetric slab continuous casting chamfering crystallizer and belongs to the technical field of steelmaking-continuous casting. A working face of the narrow-face copper plate consists of a middle working face (2), a large-size inner-arc chamfer (3) and a small-size outer-arc chamfer (4). An upper opening of the narrow-face copper plate is defined by a small-size outer-arc chamfering upper edge (5), a middle working face upper edge (6), a large-size inner-arc chamfering upper edge (7), an inner-arc copper plate upper edge (8), an outer-arc copper plate upper edge (9) and a copper plate back side upper edge (10). Two-dimensional heat transfer of corner portions is changed by changing corner portions of a medium-thickness slab, the slab corner portion temperature is improved, meanwhile differential treatment is performed by considering inner-outer-arc difference, accordingly the problem that corner transverse crack defects easily occurred in the continuous casting slab can be solved. In addition, the temperature difference between the outer arc and the inner arc is also considered, and the safety of the slab on a heating furnace roller way is ensured while the outer-arc corner transverse crack defects are overcome.
Owner:SHOUGANG CORPORATION
Failure monitoring processing device based on virtual interruption and method
The invention relates to a failure monitoring processing device based on virtual interruption and a method. For the purpose that a computer user can process the fault after the processor is abnormal under the user state of the processor in a safe key system, the failure monitoring processing device based on virtual interruption provided by the invention comprises a fault monitoring reporting module, a system-level fault scheduling module, a system-level default fault processing module, a partition virtual interruption controller module, a partition fault processing table, a partition default fault processing module, a task fault processing table, a task fault processing module and a user-level fault scheduling module. When the system running is in fault, under the condition of confirming as a user fault, the used fault processing module is confirmed through the query task fault processing table and the partition fault processing table, the fault processing module is taken as a partition virtual interruption processing function and the system can enter into the processor user state so as to perform corresponding fault processing.
Owner:XIAN FLIGHT SELF CONTROL INST OF AVIC
Multi-weighted opportunity beamforming system and method based on joint optimal power allocation
ActiveCN108964728ASimple algorithmSimple designSpatial transmit diversityHigh level techniquesSignal-to-noise ratio (imaging)Engineering
The invention provides a multi-weighted opportunity beamforming system and method based on joint optimal power allocation and belongs to the technical field of wireless communications. The system of the present invention comprises a transmitting end and a user end; the transmitting end comprises an OBF matrix selector, a power splitter, a superimposer and a radiating antenna array. The method of the present invention comprises the following steps: firstly, an OBF matrix selector determines an OBF matrix input value transmitted this time by using a joint optimal power allocation algorithm and an OBF matrix with the maximum signal-to-noise ratio is selected for each user; the power splitter determines the power allocated to each user; then, the superimposer performs superposition on the userdata subjected to power allocation and the user data is transmitted to the radiating antenna array; the radiating antenna array performs broadcast; finally, each user end obtains the broadcast data and carries out decoding, respectively. The multi-weighted opportunity beamforming system and method based on joint optimal power allocation in the invention solve the problem that the transmitting endof the prior art can only serve one user at one transmission moment, resulting in low transmission efficiency of the system. The multi-weighted opportunity beamforming system and method based on joint optimal power allocation in the invention can be used for opportunistic beamforming.
Owner:HARBIN INST OF TECH
Dehumidifying and drying heat pump system fused with compressor driving type pseudo-loop heat pipe
ActiveCN114111313AIncrease the proportion of latent heatIncrease dehumidificationHeat pumpsDrying gas arrangementsRefrigerantEvaporator
The invention relates to a dehumidifying and drying heat pump system fused with a compressor driving type quasi-loop heat pipe, which comprises a refrigerant circulating flow path and an air flow path, and the refrigerant circulating flow path comprises a compressor, a condenser, a condensation reheating section, a throttle valve and a refrigerant flow path of an evaporator which are connected in sequence; the dehumidifying and drying heat pump system integrating the compressor driving type quasi-loop heat pipe further comprises an evaporation pre-cooling section connected into the refrigerant circulating flow path. The air flow path comprises an evaporation pre-cooling section, an evaporator, a condensation reheating section and a first air branch of a condenser which are connected in sequence, the evaporation pre-cooling section is used for pre-cooling air return, and the condensation reheating section is used for reheating air return. Compared with the prior art, through the effect of the compressor driving type quasi-loop heat pipe, heat exchange of air fluid in front of and behind the evaporator is achieved, useless cooling effect sensible heat carried by air at an inlet of the evaporator is reduced, the proportion of latent heat corresponding to dehumidification in the total refrigerating capacity is increased, and therefore the dehumidification amount is increased, and the dehumidification energy efficiency is improved.
Owner:TONGJI UNIV
Magnetic latching relay with asymmetric magnetic circuit
InactiveCN105047480ASame power consumptionSame calorific valueElectromagnetic relay detailsMiniaturizationPerformance index
Disclosed in the invention is a magnetic latching relay with an asymmetric magnetic circuit. The magnetic latching relay comprises a sealed housing, an electromagnetic system and a contact system, wherein the electromagnetic system and the contact system are arranged in the sealed housing. The electromagnetic system is arranged above the contact system and has an asymmetric structure; and s corresponding contact of the contact system is in a normally-open state in a return state and a corresponding contact of the contact system is in a normally-closed state in a self-holding state. The contact system consists of a pedestal, an auxiliary contact leading-out rod, a main contact leading-out rod, a connecting spring plate, a movable contact and a static contact; the two ends of the connecting spring plate are respectively connected with an armature and the auxiliary contact leading-out rod; the static contact and the main contact leading-out rod are connected; and the moving contact and the armature are connected. When the armature moves, the moving contact group is driven to move, thereby realizing state conversion. The magnetic latching relay has characteristics of simple magnetic circuit structure, miniaturization design, and high severe environment performance index.
Owner:G & A TECH
Radio frequency identification tag and label paper product applying same
ActiveCN108510040AIncrease the tilt angleDesigned for easy implementationRecord carriers used with machinesRadio frequencySignal source
The invention relates to a radio frequency identification tag and a label paper product applying the same. The radio frequency identification tag comprises a signal source structure, a radiation structure, an isolation structure and a base material, wherein the signal source structure comprises a loop antenna and a radio frequency identification chip, and the radio frequency identification chip iselectrically connected to the loop antenna; the radiation structure surrounds the signal source structure; the isolation structure is arranged at one side of the radiation structure at an interval; and the base material is used for bearing the signal source structure, the radiation structure and the isolation structure.
Owner:台湾中国钢铁股份有限公司
A hydrogen flow guiding slot plate of fuel battery
ActiveCN101087025AIncrease active areaImprove power densityCell electrodesCollectors/separatorsSingle holeFluid field
The invention relates to hydrogen guiding groove board of fuel battery, said hydrogen guiding groove board comprises positive hydrogen guiding groove board; negative surface is flat board or single board with cooling flow groove, said hydrogen guiding groove board possesses flow hole for air, hydrogen, cooling liquid and guiding groove which is connected between flow holes; said flow hole which air or hydrogen in and out is single hole for in, two or more hole for out, the guiding groove which is designed between hydrogen holes is designed to direct flow groove or nearly direct flow groove; said flow hole for cooling liquid is single hole or double holes or more holes for in, two holes or more holes for out, guiding groove which is set between flow hole for cooling liquid is designed to direct flow groove or nearly direct flow groove. Comparing with current technique, the invention can decrease resistance and pressure reduction, liquid can flow on liquid field evenly, effective area can be increased; jam of guiding groove can be avoided.
Owner:SHANGHAI MUNICIPAL ELECTRIC POWER CO +2
GIL post insulator bursting fault simulation test platform and measurement method
PendingCN112130041AComprehensive observationAccurate data measurementTesting using acoustic measurementsMeasurement instrument housingComputational physicsUltrahigh frequency
The invention discloses a GIL post insulator bursting fault simulation test platform and a measurement method. The platform is characterized in that a GIL test cavity is divided into a left cavity anda right cavity by a gas insulation spacer; the left cavity and the right cavity are respectively provided with a gas-pressure meter and a gas charging and discharging port; the left cavity is connected with a lead-out bushing through a flange; the right cavity is provided with an observation window for observing the bursting process of a GIL post insulator and a detection device for recording thebursting process of the GIL post insulator; and the detection device mainly comprises a temperature detection device, an ultrasonic partial discharge detection device, an ultrahigh frequency partialdischarge detection device, and an SF6 gas decomposition product detection device. By adopting the GIL post insulator bursting fault simulation test platform, while the bursting process of the post insulator is observed, parameters such as the temperature, the partial discharge amount and the vibration of the post insulator are continuously measured at different moments, and a multivariate statistical analysis method is applied to establish an operation correlation matrix to analyze the autocorrelation of each characteristic parameter.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)
Device and method for fault monitoring and processing based on virtual interrupt
ActiveCN106293986BImprove reliabilityDesigned for easy implementationFault responseComputer usersProcess module
The invention relates to a failure monitoring processing device based on virtual interruption and a method. For the purpose that a computer user can process the fault after the processor is abnormal under the user state of the processor in a safe key system, the failure monitoring processing device based on virtual interruption provided by the invention comprises a fault monitoring reporting module, a system-level fault scheduling module, a system-level default fault processing module, a partition virtual interruption controller module, a partition fault processing table, a partition default fault processing module, a task fault processing table, a task fault processing module and a user-level fault scheduling module. When the system running is in fault, under the condition of confirming as a user fault, the used fault processing module is confirmed through the query task fault processing table and the partition fault processing table, the fault processing module is taken as a partition virtual interruption processing function and the system can enter into the processor user state so as to perform corresponding fault processing.
Owner:XIAN FLIGHT SELF CONTROL INST OF AVIC
Power battery heating module and preparation method thereof
PendingCN111526610AGood flexibilityHigh far-infrared radiation conversion efficiencySecondary cellsOhmic-resistance heatingPower batterySilver electrode
The invention provides a power battery heating module. The power battery heating module comprises a conductive heating structural member, the conductive heating structural member comprises a grapheneheating body, two copper electrodes and two silver electrodes, wherein the graphene heating body comprises a patterned graphene heat conduction film with two ends, each end is connected with one end of one silver electrode, and the other end of the silver electrode is connected with one copper electrode; an upper insulating film and a lower insulating layer, wherein the electric heating structuralcomponent is packaged in the upper insulating film and the lower insulating film, and the inner surfaces of the upper insulating film and the lower insulating film are respectively provided with an upper adhesive layer and a lower adhesive layer which are used for bonding the electric heating structural component; and electrode terminals used for connecting a lead, wherein the upper insulating film and the upper adhesive layer are provided with two terminal holes, and the two copper electrodes are exposed through the two terminal holes to form two electrode terminals.
Owner:安徽宇航派蒙健康科技股份有限公司
Three-dimensional radar level meter based on vertical linear array and design method thereof
ActiveCN111649803AEasy to integrateHigh energyWave based measurement systemsMachines/enginesLow-pass filterArray element
The invention discloses a three-dimensional radar level meter based on a vertical linear array and a design method thereof, and relates to the technical field of millimeter wave radar imaging. The method comprises the following steps of: selecting appropriate array elements, selecting an appropriate voltage-controlled oscillator, selecting an appropriate primary noise amplifier, an appropriate low-pass filter and an appropriate power amplifier, selecting a four-channel 16-bit digital-to-analog conversion module, selecting an appropriate digital phase compensation synthesizer, carrying out two-dimensional distance direction correction on echo signals, and performing imaging through a response function of a receiving signal inversion target. According to the method, on the premise that the size and the cost are not increased, high resolution can be guaranteed, and faster imaging performance can be achieved.
Owner:SHIJIAZHUANG TIEDAO UNIV +1
Testing device for spring valve vibration frequency response characteristics
ActiveCN106949117AAccurate vibration frequency response characteristicsVibration frequency response characteristics are effectiveFluid-pressure actuator testingVibration accelerationEngineering
The invention discloses a testing device for spring valve vibration frequency response characteristics. The device comprises an acceleration sensor, a valve rod, a spring, a valve element, a piston block, a crank-link mechanism, a valve body and a variable frequency motor. The acceleration sensor is placed at the extending end of the valve rod, and the extending end of the valve rod extends out of the valve body. The valve rod is connected with the spring. The piston block is arranged on the inner wall of the valve body of a spring valve. The lower end of the piston block is connected with the small end of the crank-link mechanism. The variable frequency motor is connected with the large end of the crank-link mechanism. Pressure pulsed excitation is produced through the variable frequency motor, the vibration acceleration of the spring valve is directly tested through the acceleration sensor, and the device is applicable to testing spring valve vibration frequency response characteristics under various kinds of pressure pulsed excitation.
Owner:HARBIN ENG UNIV
An airflow guiding slot plate of fuel battery
The invention relates to air guiding groove board of fuel battery, said air guiding groove board comprises positive air guiding groove board; negative surface is flat board or single board with cooling flow groove, said air guiding groove board possesses flow hole for air, hydrogen, cooling liquid and guiding groove which is connected between flow holes; said flow hole which air or hydrogen in and out is single hole for in, two or more hole for out, the guiding groove which is designed between hydrogen holes is designed to direct flow groove or nearly direct flow groove; said flow hole for cooling liquid is single hole or double holes or more holes for in, two holes or more holes for out, guiding groove which is set between flow hole for cooling liquid is designed to direct flow groove or nearly direct flow groove. Comparing with current technique, the invention can decrease resistance and pressure reduction, liquid can flow on liquid field evenly, effective area can be increased; jam of guiding groove can be avoided.
Owner:SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
Off-axis TMA optical system for reducing processing and resetting difficulty
InactiveCN102062936BMeet the requirements of image qualityReaching Diffraction-Limited Optical PropertiesOptical elementsOptical propertySpace optics
The invention relates to an off-axis three-mirror-anastigmatic (TMA) optical system for reducing processing and resetting difficulty, relates to the technical field of space optics, and solves the problems that the conventional off-axis TMA optical system difficultly reaches optical imaging indexes due to difficulty in processing, detection and resetting. In the system, a secondary reflecting mirror is designed to be a sphere, a main reflecting mirror and a third reflecting mirror are designed to be aspheric surfaces, a quadratic term coefficient is set as zero, the main reflecting mirror andthe third reflecting mirror are high-order aspheric surfaces containing a six-order term and an eight-order term respectively; thus, the off-axis TMA optical system reaches diffraction limit optical property. When a transfer function is 50 lp, imaging quality is approximately 0.6, and Streh1 Rate is increased from 0.91 to 0.93; surface shape processing tolerance is expanded from Lambda / 50 to Lambda / 40; and the resetting tolerance of the main reflecting mirror, the secondary reflecting mirror and the third reflecting mirror is expanded by four times. By the system, the processing and resettingdifficulty is reduced; and the system can conveniently realize the optical property of diffraction limit.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
Single-ended input and differential output parallel dual-frequency low noise amplifier and design method thereof
ActiveCN102355200BAchieve improvementIncrease system areaAmplifier modifications to reduce noise influenceDifferential amplifiersDual frequencyAudio power amplifier
The invention discloses a single-ended input and differential output parallel dual-frequency low noise amplifier (LNA) and a design method thereof. The LNA can be applied to a digital TV, wireless communication and a navigation receiver and mainly comprises an input matching network, a main amplification circuit, an output network and a single-ended to differential circuit. The main amplification circuit adopts a cascode structure and has favorable reverse isolation degree; the input matching network enables the LNA to realize impedance matching and noise matching simultaneously in input stage and dual frequency ranges, and thus the noise performance of the circuit is improved at the same time of ensuring the maximum power transmission; and the singled-ended to differential circuit ensures that the LNA can be directly cascaded with a front-end antenna and a rear-end mixer circuit and easy to integrate. The LNA disclosed by the invention not only has a simple design, but also ensures that the system power consumption and area are reduced due to parallel dual-frequency receiving.
Owner:BEIHANG UNIV
Radio frequency identification tags and label paper products using the same
ActiveCN108510040BIncrease the tilt angleDesigned for easy implementationRecord carriers used with machinesRadio frequencySignal source
Radio frequency identification tags and label paper products using them. The present invention relates to a radio frequency identification label and a label paper product using the same. The radio frequency identification tag includes a signal source structure, a radiation structure, an isolation structure and a base material. The signal source structure includes a loop antenna and a radio frequency identification chip, and the radio frequency identification chip is electrically connected to the loop antenna. The radiating structure surrounds the signal source structure. The isolation structure is disposed on one side of the radiation structure at intervals. The substrate is used for carrying the signal source structure, the radiation structure and the isolation structure.
Owner:台湾中国钢铁股份有限公司
Frame structure, rear frame structure and body of automobile
InactiveCN102530082BLarge structural spaceFirmly connectedUnderstructuresSuperstructure subunitsVehicle frameClassical mechanics
The invention relates to a vehicle frame (1) having at least two longitudinal beams (2, 3) each having a first longitudinal section (4) and a second longitudinal section at an angle to one another segment (5), so that when the vehicle frame (1) is loaded into the vehicle, the first longitudinal segment (1) is basically horizontally located below the floor (110) of the vehicle body (100), so Said second longitudinal section (5) extends substantially upwards and said first longitudinal section (4) is arranged behind said second longitudinal section (5), seen in the forward direction (6). The invention provides that starting from the transition region of the second longitudinal section (5) to the first longitudinal section (4) or a region adjacent thereto, the longitudinal beams (2, 3) towards the first The directions of the longitudinal sections (4) run at least partially away from each other. The invention also relates to a rear frame structure (10) and an automobile body (100).
Owner:GM GLOBAL TECH OPERATIONS LLC
Independent traveling unit and vehicle
ActiveCN102673334BImprove adaptabilityAchieve diversificationLiquid based dampersMotor depositionVehicle frameReduction drive
The invention discloses an independent traveling unit comprising a hydro-pneumatic spring cylinder, a steering device, a bracket, a speed reducer, a motor and a wheel assembly, wherein the hydro-pneumatic spring cylinder is fixedly connected with a frame; the steering device is arranged on the hydro-pneumatic spring cylinder and can rotate around the hydro-pneumatic spring cylinder; one end of the bracket is fixedly connected with one end of the hydro-pneumatic spring cylinder, the other end of the bracket supports the motor; and the speed reducer is arranged between the motor and the wheel assembly and can drive the wheel assembly to rotate. The invention also provides a vehicle comprising the independent traveling unit. According to the technical scheme provided by the invention, a driving system and a braking system are both realized through hydraulic pressure; the hydro-pneumatic spring cylinder is fixedly connected with the frame, therefore the suitability to an unsmooth road surface and the height adjustability of a finished vehicle are realized; single tyre steering modes and whole vehicle steering modes are diverse; and the structure is simple and the weight of the whole vehicle body is reduced.
Owner:BEIJING SANY HEAVY MASCH CO LTD
A hydrogen flow guiding slot plate of fuel battery
ActiveCN100536206CEvenly distributedReduce areaCell electrodesCollectors/separatorsFuel cellsEngineering
The invention relates to hydrogen guiding groove board of fuel battery, said hydrogen guiding groove board comprises positive hydrogen guiding groove board; negative surface is flat board or single board with cooling flow groove, said hydrogen guiding groove board possesses flow hole for air, hydrogen, cooling liquid and guiding groove which is connected between flow holes; said flow hole which air or hydrogen in and out is single hole for in, two or more hole for out, the guiding groove which is designed between hydrogen holes is designed to direct flow groove or nearly direct flow groove; said flow hole for cooling liquid is single hole or double holes or more holes for in, two holes or more holes for out, guiding groove which is set between flow hole for cooling liquid is designed to direct flow groove or nearly direct flow groove. Comparing with current technique, the invention can decrease resistance and pressure reduction, liquid can flow on liquid field evenly, effective area can be increased; jam of guiding groove can be avoided.
Owner:SHANGHAI MUNICIPAL ELECTRIC POWER CO +2
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