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Large-scale face identification method based on GPU accelerated retrieval
ActiveCN107577990AReduce retrieval timeGuaranteed recognition accuracyCharacter and pattern recognitionNeural architecturesFeature matchingMulti gpu
The invention discloses a large-scale face identification method based on GPU accelerated retrieval, which relates to the field of computer vision. The large-scale face identification method comprisesthe steps of face detection and alignment, face feature extraction, Hash feature acquisition, face index database establishment, multi-GPU accelerated Rough matching, hash-based candidate set acquisition, precise matching based on distance metric, voting to obtain a best-matched person and the like. The large-scale face identification method based on GPU accelerated retrieval is based on two-stage feature matching of Hash index and multi-GPU accelerated computing, can accelerate the screening of eigenvectors by utilizing the powerful parallel computing capacity of the GPU, greatly reduces time consumption on large-scale data set retrieval, and can meet various application requirements taking the implementation of a deep convolutional neural network as the basis and having high demand on real-time performance.
Owner:武汉世纪金桥安全技术有限公司 +1
Pulse impact producing mechanism and center differential pressure drill comprising same
InactiveCN106703701ASimple structure and principleWide range of applicationsDrill bitsDrilling drivesDriven elementEngineering
The invention relates to a pulse impact producing mechanism and a center differential pressure drill comprising the same. The pulse impact producing mechanism comprises a righting element, a driving element, a rotating element and a throttling element which are placed sequentially, the righting element, the driving element and the rotating element are connected sequentially, the throttling element and the rotating element are in clearance fit, overcurrent channels which are used for flowing of a drilling fluid are arranged on the righting element and the throttling element, the driving element drives the rotating element to rotate, and the overcurrent channels on the rotating element and the throttling element move relatively. The center differential pressure drill comprises a reaming bit, the pulse impact producing mechanism, a pressure regulating element, a transmission mechanism and a pilot bit, and the pressure regulating element, the transmission mechanism and the pilot bit are connected sequentially. Compared with the prior art, the cuttings hold-down effect of the pilot bit and the reaming bit is reduced while rotary impact drilling of the pilot bit can be realized, further the purposes of protecting the bits, prolonging the service lives and improving the drilling speed are realized, and the drilling effect is further improved.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
Focusing type cold cathode X-ray tube
InactiveCN102427015AAdjustment areaAdjust heating powerX-ray tube electrodesCathode ray concentrating/focusing/directingSoft x rayX-ray
The invention discloses a focusing type cold cathode X-ray tube which comprises a field emission cold cathode, a lamp filament gate electrode formed by lamp filaments, an anode, an X-ray tube case and a ray emergence window, wherein the field emission cold cathode and the anode are respectively arranged at two ends inside the X-ray tube case and are respectively extracted to the outside of the X-ray tube case through a cathode extraction electrode and an anode extraction electrode; the lamp filament gate electrode is arranged between the field emission cold cathode and the anode; two side surfaces of the lamp filament gate electrode are extracted to the outside of the X-ray tube case through the two extraction electrodes; the anode is provided with a slope surface for generating an X-ray by electron bombardment; and the ray emergence window is arranged at the position on the side surface of the e X-ray tube case, which is just opposite to the slope surface. Compared with the general field emission cold cathode X-ray tube, the focusing type cold cathode X-ray tube can be used for effectively carrying out electron bombardment on the anode to degass, improving the vacuum degree in the X-ray tube, simultaneously focusing electron beams, improving the performance of the X-ray tube and prolonging the service life of the X-ray tube.
Owner:SOUTHEAST UNIV
Frequency-domain super-resolution micro-multipath height finding method of sky-wave beyond visual range radar
InactiveCN103048655ADoes not affect implementationEasy to upgradeRadio wave reradiation/reflectionPattern recognitionFinite impulse response
The invention discloses a frequency-domain super-resolution micro-multipath height finding method of a sky-wave beyond visual range radar, wherein the frequency-domain super-resolution micro-multipath height finding method is suitable for a signal processing system of the sky-wave beyond visual range radar. The frequency-domain super-resolution micro-multipath height finding method comprises the following specific steps of: filtering an interested target and multipath signals thereof by using band-pass FIR (Finite Impulse Response) filtering; estimating a mean distance value of the interested target by using a super-resolution method, and designing a distance rectangular projection matrix to filter and remove partial redundant micro-multipath signals; forming a Doppler domain weighted signal sub-space, estimating a mean Doppler value of the Doppler domain weighted signal sub-space; and calculating a Doppler parameter by using a micro-multipath model, correcting by using the mean Doppler value to form a Doppler projection matrix, matching the weighted signal sub-space with the Doppler projection matrix, searching to obtain the estimated height value of the target, wherein the specific steps are shown in figure 1. The method has the advantage of reducing the probability of matching failure caused by noise and parameter errors of an ionization layer. The technology disclosed by the invention is not limited to a sky-wave beyond visual range radar system and can be widely applied to a target height finding occasion with a ground multipath effect, and has popularization and application values.
Owner:AIR FORCE EARLY WARNING ACADEMY
Novel fermentation tank
InactiveCN101358169AImprove throughputExtend the life cycleBioreactor/fermenter combinationsBiological substance pretreatmentsBiochemical engineeringCoupling
The present invention discloses a novel fermentation tank, which comprises a tank body, a membrane filter and a pipeline; wherein, the membrane filter is arranged inside the tank body; one end of the pipeline is connected with the membrane filter in the tank; the other end of the pipeline leads out of the tank or leads out of the tank through a hollow stirring shaft. The membrane filter can be arranged on the wall of the tank through the pipeline or on the hollow stirring shaft, and the included angle between the membrane filter and the longitudinal axis of the tank is between 0 degree and 90 degrees. In the process of bio-fermentation, the fermentation tank can carry out membrane separation, the positive pressure inside the fermentation tank or / and the negative pressure outside the fermentation tank ensure that liquid-phase material can permeate the membrane and pass through the pipeline to reach other devices outside the fermentation tank, and suspended cells and intercepted granules are intercepted in the fermentation tank to keep fermenting. The novel fermentation tank utilizes the characteristic of the combination of the fermentation tank and the membrane separation, to realize the coupling of cell culture and product abstraction. The fermentation tank does not affect the growth and metabolism of cells, the reaction effect is good, the biochemical reaction system is stable, moreover, the cost is low, investment is little, and the fermentation tank is applicable to biological reaction.
Owner:姜泓芳
Slip-sheet for rotary compressor
InactiveCN1815029AImprove COPReduced clearance volumeRotary piston pumpsRotary piston liquid enginesEngineeringSlip sheet
Present invention discloses a slide piece for rotary compressor. Said end surface end surface contour is smooth curve, the curvature centre of said curve deviated to air outlet, the end surface of slide piece bottom being not symmetric along slide piece center line, but one side corresponded air suction port being higher than one side corresponded air outlet. When compressor is in operation, said asymmetrical shape can relieve slide piece tilted position, thereby reducing frictional wear and mechanical friction power loss between slide piece and slide piece trough, reducing slide piece blocking duo to assembly deformation, raising compressor reliability and COP.
Owner:李玉斌
Admittance control method and apparatus of radio communication system
ActiveCN101494877ASimple configurationMonitor performanceNetwork traffic/resource managementAssess restrictionCommunications systemResource utilization
The embodiment of the invention discloses a admission control method in radio communication system, which mainly comprises: judging the QoS class of the service which initiates a call request according to the service quality QoS property; comparing the service satisfaction ratio of corresponding QoS class with the preset admission threshold; and performing admission to the service with service satisfaction ratio no less than the admission threshold. At the same time, The embodiment of the invention further discloses an admission control apparatus in radio communication system, thereby, can avoids complex but inaccurate resource utilization rate calculation.
Owner:HUAWEI TECH CO LTD
Data extraction method and device based on MVC
ActiveCN104281441ADoes not affect implementationReduce couplingSoftware designTransmissionControl layerObject based
Systems and methods are provided for data extraction based on model- view- controller (MVC). For example, a data extraction request of a control layer object is acquired; network address parameters and a data carrier object corresponding to the data extraction request are acquired; a network data capturing function of the data carrier object is called based on at least information associated with the network address parameters to capture network data; the captured network data is analyzed based on at least information associated with the data carrier object; value assignment is performed on the data carrier object based on at least information associated with the analysis of the network data; and the data carrier object is returned to the control layer object corresponding to the data extraction request.
Owner:TENCENT TECH (SHENZHEN) CO LTD
High-fire-retardant scratch-resistant polyphosphazene composite practical coating for automobile
The invention discloses a high-fire-retardant scratch-resistant practical coating for an automobile. The coating is prepared from unsaturated carboxyl-terminated polyester, epoxy resin, triglycidyl isocyanurate, hydroxyl alkyl amide, organic silicon, fillers, zinc stearate, pigment, polyphosphazene and the like. The invention further discloses a preparation technology of the high-fire-retardant scratch-resistant practical coating for the automobile.
Owner:SHANGHAI NEW PORT CHEM TECH SERVICE CO LTD
High-strength impermeable concrete and preparation method thereof
ActiveCN112125608AGuaranteed mechanical propertiesImprove impermeabilityTriethoxysilaneCapillary channel
The invention belongs to the technical field of building materials, and particularly relates to high-strength impermeable concrete which is prepared from modified natural river sand, the natural riversand is modified by 3amino butyl triethoxy silane, amino groups are formed on the surfaces of river sand particles, and the river sand particles are crosslinked with macromolecules in a specially-made polyurethane aqueous dispersion, internal gaps are reduced after concrete curing, capillary channels are blocked, the impermeability of concrete is improved, and the high-strength impermeable concrete has excellent mechanical properties. The invention also provides a preparation method of the concrete.
Owner:台州远巢新型建材有限公司
Biological porous bone cement prepared by compositing Sr-doped calcium-phosphorus bioglass and alpha-tricalcium phosphate and preparation method thereof
InactiveCN102249728AHigh compressive strengthPromote degradationCeramicwarePorosityAlpha-tricalcium phosphate
The invention relates to a biological porous bone cement prepared by compositing Sr-doped calcium-phosphorus bioglass and alpha-tricalcium phosphate and a preparation method thereof. The bone cement provided by the invention is characterized in that the porousness of the bone cement is 39-57%, and the size of a micropore is between 0.5 um and 4 um; and the compression strength is 23.6-38.5 Mpa. In the invention, through compositing the Sr-doped calcium-phosphorus bioglass and alpha-tricalcium phosphate, the porous-structured bone cement is formed. In the invention, the solidification time and microstructure of the bone cement can be adjusted through the rapid dissolving of the Sr-doped calcium-phosphorus glass so as to form a porous structure with a high porousness, and the degradation property of a hydrated product (hydroxyapatite) can be improved; and in addition, by virtue of Sr ions introduced by biodegradable calcium-phosphorus glass, the compression strength of the bone cement is improved, thereby achieving the properties such as high strength and good degradability of the bone cement better.
Owner:TIANJIN UNIV
Drill bit with energy-gathered attack to unload well bottom stress and drilling method
ActiveCN110905418AImprove rock breaking drilling speedUnique ideaDrill bitsDrilling machines and methodsWell drillingMechanical engineering
The invention relates to a drill bit with energy-gathered attack to unload well bottom stress and a drilling method. The drill bit comprises a drill bit body, an energy-gathered spring and a dominanceattack assembly, wherein the dominance attack assembly is installed inside the drill bit body, energy-gathered attack teeth at the bottom end of the dominance attack assembly protrude out of cuttingteeth at the bottom surface of the drill bit body, the energy-gathered spring is installed inside the drill bit body and above the dominance attack assembly, and the dominance attack assembly and thedrill bit body can axially move relative to each other but cannot rotate relative to each other, so that the energy-gathered attack teeth at the bottom end of the dominance attack assembly protrude out of the drill bit cutting teeth at the bottom end of the crown of the drill bit body to crush the well bottom to form an annular well bottom, the well bottom stress is released, the drill bit cuttingteeth at the bottom end of the crown of the drill bit body break rock under pressure and torque, the whole rock breaking process is realized by releasing the stress firstly and breaking the rock of the well bottom completely, and the drilling speed process is improved.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
10 KV electric transmission line zero-sequence current detection system
InactiveCN103901252ASolve problemsThere is no problem of uneven sensitivityCurrent/voltage measurementSignal processing circuitsTransducer
The invention discloses a 10 KV electric transmission line zero-sequence current detection system. The 10 KV electric transmission line zero-sequence current detection system is characterized in that head ends of auxiliary coils of three load current transformers are connected with a load current detection loop respectively, the tail ends of the auxiliary coils of the three load current transformers are connected with the same point SO, and a zero detection transducer is arranged between the point SO and a signal common end com, wherein the point SO is the head end of a primary coil of the zero detection transducer, and the com end is the tail end of the primary coil of the zero detection transducer. A zero-sequence current sampling resistor Rx is connected to the head end of the auxiliary coil of the zero detection transducer, one end of the resistor Rx is connected to a comprehensive signal processing circuit, the other end of the resistor Rx is connected to the com end, and the tail end of the auxiliary coil of the zero detection transducer is connected to the com end. By means of the 10 KV electric transmission line zero-sequence current detection system, the 10 KV electric transmission line zero-frequency current detection mode in the prior art is changed, micromation and invisibility are achieved, detection accuracy is substantially improved, and false zero-sequence current detection is completely avoided.
Owner:烟台市华能电器有限公司
Method for inhibiting sub-synchronous resonance on the basis of phase variation
ActiveCN101552470AImprove the effect of suppressing SSRDoes not affect implementationReactive power adjustment/elimination/compensationReactive power compensationPhase variationSub synchronous resonance
The invention belongs to the thyristor controlled series compensation (TCSC) technology and relates to a method for inhibiting the sub-synchronous resonance on the basis of the phase variation of the circuit current relative to working frequency, in particular to a triggering-level control algorithm of the controlled series compensation, which adopts an additional damping control structure and achieves the purpose of inhibiting the sub-synchronous resonance by the fine-tuning of a controlled series compensation triggering angle. The invention particularly comprises the steps of calculating and obtaining the phase variation Delta t of measurement circuit current relative to the working frequency, which is caused by the sub-synchronous frequency circuit current component, and calculating the additional value Delta Alpha of the triggering angle according to the Delta t, etc.
Owner:CHINA ELECTRIC POWER RES INST +2
Aerobic composting waste heat power generation system and working method thereof
PendingCN110713400ARealize managementEfficient use ofBio-organic fraction processingEnergy inputCompostOrganic solid waste
The invention relates to an aerobic composting waste heat power generation system and a working method thereof, and belongs to the field of organic solid waste resource utilization. The system comprises a waste collection device, a main composting reaction chamber, a waste heat power generation device and a tail gas collection device, wherein a heat conduction cover is arranged at the top of the main composting reaction chamber, the upper space of the main composting reaction chamber is a waste reactor body, the lower space of the main composting reaction chamber is a leachate collection device, a filter screen is arranged between the upper space and the lower space, and the main composting reaction chamber is further connected with an aeration device; the bottom of the heat conduction cover is connected with the reactor body through a heat conduction rod; a waste heat power generation device is installed on the upper surface of the heat conduction cover and is formed by connecting a plurality of semiconductor thermoelectric power generation pieces in series, wherein the electric energy generated by the semiconductor thermoelectric power generation pieces is transmitted to an electricity storage and supply device. According to the invention, heat can be recovered from organic wastes while the organic wastes are treated, and the problem of secondary pollution caused by excessivewaste heat of traditional compost is solved.
Owner:SHANDONG UNIV
Interleaved Boost converter comprising lossless buffer circuit
ActiveCN104113208AReduced turn-off lossPerformance is not affectedDc-dc conversionElectric variable regulationPower switchingEngineering
An interleaved Boost converter comprising a lossless buffer circuit comprises inductors L1, L2...Ln. The input ends of the inductors L1, L2...Ln are connected with the positive electrode of an input power supply Vin. The output ends of the inductors L1, L2...Ln are connected with the anodes of diodes D1, D2...Dn. The output ends of the inductors L1, L2...Ln are connected with the collectors of power switching tubes S1, S2...Sn. The cathodes of the diodes D1, D2...Dn are connected with one end of a filter capacitor C0. The emitters of the power switching tubes S1, S2...Sn and the other end of the filter capacitor C0 are connected with the negative electrode of the input power supply Vin. The interleaved Boost converter can effectively reduce the switching-off loss of the power switching tubes, and has a simple structure. The performance of the original converter is not changed, the difficulty in control and drive circuit implementation is reduced, the cost is low, and no energy loss is caused.
Owner:武汉欣远自控工程有限公司
Shaft bottom stress-induced unloading drill bit and method for increasing drilling speed
ActiveCN111608589AImprove rock breaking drilling speedUnique ideaDrill bitsDrilling rodsStructural engineeringDrill bit
The invention relates to a shaft bottom stress-induced unloading drill bit and a method for increasing the drilling speed. According to the technical scheme, a supporting block, a spring and a stressunloading gear matrix are mounted in a special mounting hole of the shoulder of a drill bit body; a stress unloading gear is mounted on the stress unloading gear matrix; the spring is mounted on one side, close to the inside of the drill bit body, of the stress unloading gear matrix; a combination body of the stress unloading gear matrix and the stress unloading gear can slide relative to the axisdirection of the spring; drill bit cutting teeth are arranged on the outer side of a drill bit blade of the drill bit body; and the extending length of the stress unloading gear is larger than the extending length of the drill bit cutting teeth. The drill bit has the beneficial effects as follows: the stress unloading gear crushes the shaft bottom ahead of the drill bit cutting teeth at the bottom end of the crown of the drill bit body to form the circular groove shaft bottom, the shaft bottom stress is released, then the drill bit cutting teeth at the bottom end of the crown of the drill bitbody break rock under pressure and torque, and the drilling speed is increased in the whole rock breaking process through stress releasing and then overall rock breaking at the shaft bottom.
Owner:CHINA PETROLEUM & CHEM CORP +2
Liquefied natural gas (LNG) cold energy gradient utilization system and control method
PendingCN111102027AWide temperature rangeIncrease relative independenceDomestic cooling apparatusLighting and heating apparatusProcess engineeringLiquefied natural gas
The invention provides a liquefied natural gas (LNG) cold energy gradient utilization system and a control method. When an abnormal working condition appears to a certain technology of a refrigerant expansion electronic system, refrigeration storage area subsystems and data center area subsystems, it is ensured that other areas are not affected to continue production, and other refrigerant gradient technologies can stop due to the abnormal working condition of the certain technology. Thus, efficient cold energy gradient utilization is realized, a temperature utilization range is wide, the relative independentability of each technological segments of the LNG cold energy gradient utilization is improved, the operating flexibility and error-tolerant rate of an overall project are improved, the economic impact of the breakdown is reduced, safety production can be realized, the operation cost is reduced, so that the overall project is environmentally friendly, potential safety hazards are reduced to the lowest, and the implementation of other projects of a station is not affected.
Owner:BEIJING GAS GRP
End cover, valve body matched therewith, main valve of four-way reversing valve, and four-way reversing valve
InactiveCN101963256ADoes not affect implementationAvoid problems with poor weld qualityEqualizing valvesMultiple way valvesEngineeringVALVE PORT
The invention discloses an end cover which is used for being matched with a valve body of a main valve of a four-way reversing valve; the end cover is provided with a large diameter section and a small diameter section which are sequentially arranged along the axial direction, wherein the periphery of the end cover at the large diameter section is used for being fixedly connected with the valve body in a sealing way, and the end part of the end cover at the small diameter section is used for being matched with a piston of the main valve for limiting the work position of the piston; and the end part of the end cover at the large diameter section is provided with a stop hole extending along the radial direction, and the stop hole is used for leaning against and being matched with the end surface of the valve body. Compared with the prior art, the part where the end cover is welded with the valve body is moved to the end surface of the valve body at the outer side, so that the radial clearance between the end cover and the valve body is larger, and the welding technique is not influenced. Therefore, the invention can effectively avoid the problem of poorer welding quality caused by more change of the inner diameter of the valve body. The invention also disclosed the valve body matched with the end cover, main valve of the four-way reversing valve provided with the end cover and the valve body, and the four-way reversing valve.
Owner:ZHEJIANG SANHUA CLIMATE & APPLIANCE CONTROLS GRP CO LTD
Method for receiving group broadcasting business data by mobile station in radio network
InactiveCN1774087ACoding and modulation can be changedVariable resource usageBroadcast service distributionData switching networksBusiness dataRadio networks
A method of receiving multicast ¿C broadcast service data by mobile station in radio network includes setting up fixed mapping relation of index number on modulation and coding mode to coding modulation mode in multicast ¿C broadcast service resource MBS ZONE, obtaining index number of said mode in MBS ZONE and service resource occupied by MBS connection by mobile station, receiving MBS service data by mobile station according service resource occupied by MBS connection and obtaining modulation coding mode corresponding to index number according to fixed mapping relation sought out as per index number for analyzing MBS service data.
Owner:HUAWEI TECH CO LTD
Anti-capture RFID multi-label identification method
InactiveCN106650536AImprove recognition efficiencyAchieve full recognitionSensing by electromagnetic radiationComputer science
The invention discloses an anti-capture RFID multi-label identification method. The method comprises the following steps of: calculating a capture happening condition according to a label quantity and a capture happening probability, and identifying labels; and only carrying out anti-capture processing at the initial stage of label identification and at the label identification finishing moment. Aiming at a basic process and a capture principle of RFID system multi-label identification, the invention discloses a simple and efficient anti-capture RFID multi-label identification method, so that the capture problems in the RFID multi-label identification process is solved without influencing the RFID multi-label identification efficiency. The invention discloses a new label capture processing method, namely, a delayed processing method; through the new label capture processing method, no loss is caused to the identification performance of an original algorithm and the identification efficiency is above 50%; and the new label capture processing method is simple to implement and does not have obvious influences on the identification process and application implementation of the original algorithm.
Owner:SOUTHWEAT UNIV OF SCI & TECH
Rapidly degradable antibacterial plastic film and preparation method thereof
PendingCN113861645AGood dispersionGood mechanical properties and antibacterial propertiesBio-packagingAnti bacterialPolymer chemistry
The invention provides a rapidly degradable antibacterial plastic film. The plastic film takes polylactic acid as matrix resin, and special nano silicon dioxide grafted graphene is added in the preparation process, so that compared with a conventional polylactic acid film, the prepared plastic film has better mechanical property and antibacterial property. The invention also provides a preparation method of the plastic film.
Owner:全晓婷
Unified account system for realizing multi-platform business intercommunication
ActiveCN112804193ARealize unified top-level managementTo achieve the purpose of ecological unityTransmissionBusiness enterpriseComputer science
The invention provides a unified account system for realizing multi-platform business intercommunication, and the system comprises a business platform unified access module which is used for providing an access service for a business platform; and the account center is used for centrally storing the original accounts of the business platforms accessed to the business platform unified access module, formulating the registration, login and authority management specifications of the user accounts and formulating the access standards of the business platforms. According to the invention, business intercommunication among a plurality of business platforms under an enterprise name can be realized.
Owner:AEROSPACE INFORMATION
Multi-passband and ultra wide band switchable UWB filter based on switch principle
InactiveCN105789747ASimple designCompact structureWaveguide type devicesResonanceDielectric substrate
The invention discloses a multi-passband and ultra wide band switchable UWB filter based on a switch principle. The filter is composed of multimode resonance patches (101) which are arranged on the upper surface of a dielectric substrate and are symmetrical, port patches (102), microstrip transmission lines (103), the dielectric substrate (104) and a metal ground plate (105) under the dielectric substrate. According to the filter, through utilization of the multimode resonance patches, the ultra wide band is realized; two states of the multiple passbands and the ultra wide band are switched according to whether a switch patch exists or not. The filter is simple in design structure, compact in structure, micronized in structure, convenient in processing, high in realization performance and low in cost. The two states of the multiple passbands and the ultra wide band can be switched at any time. The filter provided by the invention has a good state switch advantage. The state can be selected at any time according to a demand. Great convenience is brought to the practical application of a project.
Owner:HARBIN HESON SCI & TECH
HDL code simulation coverage rate asynchronous event-driven automatic analysis method
PendingCN114253862AWill not blockDoes not affect functionalitySoftware testing/debuggingRate analysisEngineering
The invention discloses an HDL code simulation coverage rate asynchronous event-driven automatic analysis method. The method comprises the following steps: performing lexical and grammatical analysis on an HDL code; initializing a coverage rate analysis environment; inserting coverage rate primitives; an executable function corresponding to the coverage rate primitive is generated, and then the executable function is inserted into an event queue of the coverage engine to serve as an independent thread or process to be maintained; the executable function and the simulation program are executed asynchronously in parallel to collect coverage rate information; and outputting a coverage rate analysis result and a report. According to the method, the executable function corresponding to the coverage rate primitive is inserted into the event queue of the coverage engine and is executed in parallel and asynchronously with the simulation process, so that the realization of the original circuit function is not influenced, and the influence on the simulation performance can be minimized.
Owner:湖南泛联新安信息科技有限公司
Suspended guide-rail-type high-altitude operation platform and manufacturing method
PendingCN109653481AImproved center of gravity stabilityConstruction safetyScaffold accessoriesBuilding support scaffoldsBuilding construction
Owner:济南四建(集团)有限责任公司
Admittance control method and apparatus of radio communication system
ActiveCN101494877BSimple configurationDoes not affect implementationNetwork traffic/resource managementAssess restrictionCommunications systemResource utilization
The embodiment of the invention discloses a admission control method in radio communication system, which mainly comprises: judging the QoS class of the service which initiates a call request according to the service quality QoS property; comparing the service satisfaction ratio of corresponding QoS class with the preset admission threshold; and performing admission to the service with service satisfaction ratio no less than the admission threshold. At the same time, The embodiment of the invention further discloses an admission control apparatus in radio communication system, thereby, can avoids complex but inaccurate resource utilization rate calculation.
Owner:HUAWEI TECH CO LTD
Self-adhesive polymer modified asphalt waterproof coiled material and preparation method thereof
InactiveCN113072895ADoes not affect implementationImprove waterproof performanceNon-macromolecular adhesive additivesFilm/foil adhesivesPolymer sciencePolymer modified
The invention provides a self-adhesive polymer modified asphalt waterproof coiled material, specially-made thermoplastic polyurethane resin is added into the asphalt layer raw material of the waterproof coiled material, the thermoplastic polyurethane resin has good compatibility with other components, and the waterproof performance and the mechanical performance of the waterproof coiled material can be improved when the thermoplastic polyurethane resin matches the other components for use. The invention further provides a preparation method of the waterproof coiled material.
Owner:林娜
10kv Transmission Line Zero Sequence Current Detection System
InactiveCN103901252BHigh sensitivityImprove accuracyCurrent/voltage measurementElectrical resistance and conductanceSignal processing circuits
The invention discloses a zero-sequence current detection system for a 10KV transmission line. There is a zero-measuring transformer between the point and the signal common terminal com. The first end of the side coil is connected with a zero-sequence current sampling resistor Rx, one end of the resistor Rx is connected to the integrated signal processing circuit, the other end of the resistor Rx is connected to the com terminal, and the tail end of the secondary coil of the zero-measuring transformer is connected to the com terminal. The invention changes the mode of detecting the zero-sequence current of the 10KV transmission line in the prior art, realizes miniaturization and stealth, greatly improves the detection accuracy, and completely eliminates the problem of false detection of false "zero-sequence current".
Owner:烟台市华能电器有限公司
Focusing type cold cathode X-ray tube
InactiveCN102427015BDoes not affect implementationImprove performanceX-ray tube electrodesCathode ray concentrating/focusing/directingCold cathodeElectron bombardment
The invention discloses a focusing type cold cathode X-ray tube which comprises a field emission cold cathode, a lamp filament gate electrode formed by lamp filaments, an anode, an X-ray tube case and a ray emergence window, wherein the field emission cold cathode and the anode are respectively arranged at two ends inside the X-ray tube case and are respectively extracted to the outside of the X-ray tube case through a cathode extraction electrode and an anode extraction electrode; the lamp filament gate electrode is arranged between the field emission cold cathode and the anode; two side surfaces of the lamp filament gate electrode are extracted to the outside of the X-ray tube case through the two extraction electrodes; the anode is provided with a slope surface for generating an X-ray by electron bombardment; and the ray emergence window is arranged at the position on the side surface of the e X-ray tube case, which is just opposite to the slope surface. Compared with the general field emission cold cathode X-ray tube, the focusing type cold cathode X-ray tube can be used for effectively carrying out electron bombardment on the anode to degass, improving the vacuum degree in the X-ray tube, simultaneously focusing electron beams, improving the performance of the X-ray tube and prolonging the service life of the X-ray tube.
Owner:SOUTHEAST UNIV
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