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101results about How to "Raise the upper limit" patented technology
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Biological sequence data-base searching multilayered accelerating method based on flow process
InactiveCN101158952AImprove search speedIncrease computing speedSpecial data processing applicationsCluster systemsSequence database
The invention discloses a multi-level acceleration method of flow-based biological sequence database search, which is to accelerate the search speed of a biological sequence database on the premise of ensuring search accuracy and relatively low cost. The technical proposal is that a cluster system composed of a plurality of personal computers shall be created firstly, and a master control node machine is assigned; the master control node machine distributes the database sequence and stores into each node machine in the cluster system, so as to fill and rearrange an inquiry sequence, and distribute the inquiry sequence to all the node machines in the cluster system; each node machine executes the search task in parallel, so as to be responsible for the completion of search tasks of the inquiry sequence in a local database sequence; the master control node machine collects, summarizes and outputs the results of parallel search tasks on all the node machines. The invention makes the search tasks be executed in parallel between the n node machines of the cluster, each node machine distributes the comparative calculation task of two sequences to p hardware calculation clusters to be conducted in parallel, thereby realizing the multi-level acceleration objective in parallel of three layers including a cluster node layer, a flow-level calculation layer, as well as a flow inner core command layer.
Owner:NAT UNIV OF DEFENSE TECH
Wet sludge incinerating treatment apparatus with particle drier
ActiveCN1931752ASimplify the dry incineration processHeating fastSludge treatment by oxidationByproduct vaporizationSludgeFluidized bed
The wet sludge drying and incinerating treatment apparatus consists of a circulating fluidized bed incinerator hearth, a high temperature gas-solid separator, a tail gas flue, a hot ash distributing valve, a sludge disperser, a drier and an exhaust gas treating unit. The present invention completes the drying and incinerating of sludge in single apparatus, and has less heat loss and no exhaust of gas with bad smell.
Owner:INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
Parallelly connected capacitance type capacitance pressure sensor
InactiveCN106289592ARelative change increasesHigh sensitivityForce measurementRapid change measurementSignal-to-noise ratio (imaging)Internal resistance
The invention aims to provide a parallelly connected capacitance type capacitance pressure sensor which effectively solves the problems that a single capacitance pressure sensor fails to effectively increase capacitance relative variation due to limit on geometric dimensioning and has too large internal resistance and small SNR (signal to noise ratio) and the like. The sensor comprises a matched shell, a fixed electrode assembled with the matched shell, pipe-shaped extraction electrode, a moving electrode and a pressure extraction opening. The sensor is characterized in that the pressure extraction opening is one with a public welding base, two fixed electrodes and moving electrodes with the same specification assembled in the matched shell and a capacitance pressure sensor of the pipe-shaped extraction electrode are connected with one public welding base pressure extraction opening, the fixed electrode is connected with a lead wire to form the capacitance pressure sensor parallelly connected with two capacitance pressure sensors. The parallelly connected capacitance type capacitance pressure sensor has a rational structure design, multiples capacitance relative variation, remarkably improves sensitivity and SNR, is good in stability and high in measuring accuracy and reduces internal resistance, which enables the measuring range, compared with a single one, a constant upper limit and substantial extension in small and micro direction.
Owner:SHENYANG SENSOR TECH INST
Method and device for bringing a manipulator to a standstill
InactiveCN102011932AHigh braking force variationShorter braking distanceProgramme controlProgramme-controlled manipulatorManipulatorEngineering
A method according to the invention for stopping a manipulator (1) includes these steps: advance simulation of stopping distances for different states (q, dq / dt, L) and / or braking force profiles ([tau]) of the manipulator (S10), estimating of an upper limit as the stopping distance (smax) on the basis of the stopping distances simulated in advance (S120), monitoring a zone (A0; A1; A2), and decelerating the manipulator (1) when a zone is violated, wherein the monitored zone is defined variably (S130) during operation on the basis of the stopping distance (smax) of the manipulator.
Owner:库卡实验仪器有限公司
Split burning fame detecting system
InactiveCN101034008AGood effectRaise the upper limitRadiation pyrometryPhotovoltaic detectorsProcess module
A kind of fission type combustion flame detecting system which include only photo detector, fire examine probe and fire examine amplifier that connect to pretreating open circuit of photo detector output terminal. Fire examine amplifier includes one flame analog signal processing circuit, A / D transducer, digital signal processing circuit, display unit, D / A transducer, on-off input and output circuit, and serial communication circuit; the input end of flame analog signal processing circuit attach with pretreating circuit output port of fire examine probe; the input end of A / D transducer attach with flame analog signal processing open circuit's output port; the digital signal processing circuit(DSP) attach with output port of A / D transducer; The display unit, D / A transducer, on-off input and output circuit, and serial communication circuit respectively attach with digital signal processing circuit; the DSP circuit includes microprocessor that has interior signal processing system. The signal processing system includes signal acquisition module, digital filter module and analysis process module. Digital signal processing circuit(DSP)output switching value signal about with or without flame, and with or without trouble, and combustion flame's frequency and its corresponding power spectrum.
Owner:上海神明控制工程有限公司
High-dynamic-range image sensor and manufacturing method thereof
InactiveCN102683374ARaise the upper limit of the dynamic rangeRaise the upper limitRadiation controlled devicesMetal-insulator-metalEngineering
The invention relates to the field of semiconductor devices and discloses a high-dynamic-range image sensor and a manufacturing method thereof. According to the invention, a spare area in a metal wiring layer is ingeniously utilized, a metal-insulator-metal (MIM) capacitor is formed and connected in parallel with a floating diffusion area, the well capacity of the floating diffusion area is improved, and the storage capacity of photo-induced charges of the image sensor is improved, so the upper limit of a dynamic range is raised. Meanwhile, the self area of the floating diffusion area is not increased, so increase of dark current noise is avoided.
Owner:北京三平桐益衡科技有限公司
Augmented reality head-up display system and method
InactiveCN107843985ARaise the upper limitImprove viewing angleOptical elementsHead-up displayPlane mirror
The invention discloses an augmented reality head-up display system, which comprises a projection module, an imaging element, an optical plane mirror, a concave mirror and a holographic optical film,wherein the projection module is used for projecting light rays; the imaging element is used for forming a real image of the light rays and then forming a mirror image on the optical plane mirror; theoptical plane mirror is used for reflecting the mirror image onto the concave mirror, and the imaging element and the optical plane mirror are arranged on a projection path of the projection module;the concave mirror is used for magnifying the mirror image reflected by means of the optical plane mirror and projecting the mirror image onto the holographic optical film; and the holographic opticalfilm is fixed on a windshield of a vehicle. The augmented reality head-up display system and an augmented reality head-up display method increase an upper limit of a depth-of-field distance, can realize the effect of combining virtual indication information with an actual road, and improve the viewing angle of the driver.
Owner:杭州海藻科技服务有限公司
Train safety protection method, device and system
ActiveCN112590871AThe upper limit is fully excavatedRaise the upper limitElectric vehicle charging technologyRailway signalling and safetyEmergency brakeOperating speed
The embodiment of the invention provides a train safety protection method, device and system, and the method comprises the steps: firstly collecting the operation data of a following vehicle in a virtual group at a current moment, and predicting the acceleration of the following vehicle at a next moment according to the operation data; determining a target safety protection model from multiple different safety protection models according to the acceleration of the following vehicle at the next moment, wherein the multiple different safety protection models correspond to different safety speedupper limit values, and finally limiting the running speed of the following vehicle according to the safety protection speed. Different safety protection models are selected according to the predictedacceleration values of the following vehicles at the next moment, and therefore the running speed of the following vehicles of the virtual group can be controlled according to the different safety protection speeds corresponding to the different safety protection models. Compared with the prior art, a conventional safety protection model carries out traction at first and then performs emergent brake, the upper limit value of the running speed of the train can be fully excavated, the running speed of the train is increased, and then the running efficiency is improved.
Owner:TRAFFIC CONTROL TECH CO LTD
Spatial resolution measuring device of X-ray planar detector
ActiveCN105516715AReduce the difficulty of productionImprove measurement accuracyTelevision systemsPhysicsOptical path
The invention provides a spatial resolution measuring device of an X-ray planar detector. The device comprises an X ray generating device, a resolution board, a filter plate and an X-ray planar detector, wherein a pin hole is formed between the resolution board and the X-ray planar detector, and a central ray emitted from the X ray generating device sequentially passes through the center of the resolution board, the center of the filter plate, the pin hole and the center of a photosensitive surface of the X-ray planar detector. A translational table I drives the resolution board to move along a light path direction, and a translational table II drives the pin hole to move along the light path direction so as to adjust the amplification factor of a pin-hole imaging system, and the resolution board is enabled to be imaged on the photosensitive surface of the X-ray planar detector so as to generate a measured line pair beam. The spatial resolution measuring device of the X-ray planar detector, provided by the invention, has the advantages that the spatial resolution and accuracy of measurement are improved, the difficulty of manufacturing of the resolution board is lowered, and the photosensitive surface of the X-ray planar detector is not damaged.
Owner:LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
Industrial camera light supplement control method and system
ActiveCN110418072ARaise the upper limitIncrease light intensity limitTelevision system detailsColor television detailsLuminous intensityThermistor
The invention provides an industrial camera light supplement control method and system, and the system comprises: a control circuit module which is used for the control of a whole machine; A current correction / acquisition module which is connected with the control circuit module; a thermistor voltage amplification module which is connected with the control circuit module; and a lamp bank module which is connected with the control circuit module. The invention further provides an industrial camera light supplement control method using the system. According to the industrial camera light supplement control method and system provided by the invention, high-speed acquisition is carried out on the current generated at the exposure moment of the light emitting module; the current is fed back tothe control module; the light-emitting module is adjusted rapidly in real time through operation, accurate control over single-time rapid exposure and continuous exposure intensity is achieved, and meanwhile temperature compensation and correction of the current sampling resistor and light intensity and temperature drift compensation of the lamp set are added. The method and system make the high-frequency short-time luminous intensity more stable.
Owner:SUZHOU CASIA ALL PHASE INTELLIGENCE TECH CO LTD
Transformer for heating high-voltage high-current lamp filaments
ActiveCN105428036ASmall leakage inductanceImprove pressure resistanceTransformers/inductances coils/windings/connectionsCopperResonance
The invention provides a transformer for heating high-voltage high-current lamp filaments. A secondary side winding of the transformer adopts a complete-covering type design using a copper conductive disc, a conductive rod and a conductive column to form a turn of windings; the inductance leakage is greatly reduced while the upper limit value of the output current is improved; the space between a primary side winding and the secondary side winding is designed by multiple insulating ways that are carried out by adopting transformer oil, a poly-tetra-fluoro shell and an organic glass plate, so that the voltage resistance between the primary side winding and the secondary side winding is effectively improved, and the spacing between the primary side and the secondary side is reduced; the transformer has the advantages of small and compact structure, light weight, high output current, high voltage resistance, low resonance current and the like; and the transformer can stably and effectively provide high current in an electronic beam current generating system and can be used for heating lamp filaments in an electronic gun.
Owner:AVIC BEIJING AERONAUTICAL MFG TECH RES INST
High-speed and high-flux particle speed measuring system based on optical time stretching
ActiveCN109884657AEnables high-speed line scanHigh detection throughputElectromagnetic wave reradiationBeam splitterSpectrum analyzer
The invention discloses a high-speed and high-flux particle speed measuring system based on optical time stretching. The high-speed and high-flux particle speed measuring system comprises a light source (1), a time stretching module (2), a space mapping module (3), an amplifier (4) and a beam splitter (5) which are sequentially connected, the output end of the beam splitter (5) adopts two-way output and is divided into an upper branch (6) and a lower branch (7), the output upper branch of the beam splitter (5) is connected with a spectrum analyzer (8), and the output lower branch of the beam splitter (5) is connected with a photoelectric detector (9) and a data acquisition processor (10). According to the high-speed and high-flux particle speed measuring system, particle high-speed line scanning is completed through an optical time stretching technology, speed limitation and flux limitation of a conventional particle speed measuring method are broken through, and the speed upper limitand the detection flux of particle speed measuring are increased effectively.
Owner:BEIJING UNIV OF CHEM TECH
Method for generating two-dimensional high-volume-fraction earth-rock mixed material geometric model
PendingCN114048663ARaise the upper limitImprove production efficiencyDesign optimisation/simulationComputational physicsContact model
The invention discloses a method for generating a geometric model of a two-dimensional high-volume-fraction earth-rock mixed material, which comprises the following steps of: firstly, generating randomly distributed particles in any shape according to a grading curve; performing Minkowski sum operation on the particles, and controlling the minimum gap between the adjacent particles; achieving transition from particles to clusters by an overlapped discrete element cluster method, and randomly placing the particles in a certain area; assigning a linear contact model, performing DEM simulation, separating overlapped clusters, and recording initial positions, displacement and rotation of the clusters; and finally, reconstructing the model based on the displacement and rotation information. The theoretical maximum volume fraction of any particle shape is easy to obtain, meanwhile, the boundary distribution problem of the particles and the contact problem between the particles are solved, in addition, the periodic boundary condition in the DEM provides a simple implementation method for the periodic microstructure, the generated model better conforms to the actual situation. Reliability of a subsequent numerical method test research result can be improved, and the method has relatively high application significance.
Owner:HOHAI UNIV +1
Screen frame transmission method, device, server and system and storage medium
InactiveCN108848121AImprove fluency and real-time performanceSolve the inefficiency of transmissionTransmissionData transmissionPresent moment
The invention discloses a browser based screen frame transmission method. The method comprises the steps that a display frame in the present moment is captured; data of the captured display frame is transmitted to a local browser; on the basis of the local browser, the data of the display frame is sent to a server; and via the data, the server is triggered to send the frame of the display frame toa subscribed receiving-end device via a multimedia channel, and the receiving-end device which receives the data is triggered to render and display the data via a browser. The multimedia channel includes a communication line of UDP based on WebRTC. An embodiment of the invention further provides a screen frame transmission device and system and a storage medium. Thus, screen frame transmission can be more instant and smoother, and the upper limit of participators that can be supported in screen frame transmission can be increased.
Owner:GUANGZHOU SHIYUAN ELECTRONICS CO LTD +1
Flexible dot-matrix electromyographic signal wireless acquisition system capable of realizing channel hot plugging
ActiveCN112220483ARaise the upper limitImprove comfortDiagnostic recording/measuringSensorsEngineeringWireless data acquisition
The invention discloses a flexible dot-matrix electromyographic signal wireless acquisition system capable of realizing channel hot plugging. The flexible dot-matrix electromyographic signal wirelessacquisition system comprises a plurality of flexible wireless data acquisition modules and a main control unit. The plurality of flexible wireless data acquisition modules can be completely attached to all positions of a human body, and acquire and send human body electromyographic signals; and the main control unit is connected with an upper computer, and is used for receiving the human body electromyographic signals sent by the flexible wireless data acquisition modules, synthesizing an electromyographic image and sending the electromyographic image to the upper computer. According to the flexible dot-matrix electromyographic signal wireless acquisition system, plugging of an acquisition channel can be realized in an electrified state, so that the reliability, rapid maintainability, redundancy, timely recovery capability on faults, and the like of the system are improved, and the adaptability and convenience of the acquisition system are improved; meanwhile, the flexible wireless data acquisition modules can be freely increased and decreased, so that the expansibility of the acquisition system and the comfort in the wearing process are improved; and on the premise of guaranteeingthe acquisition quality, targeting and controllability of electromyographic signal data acquisition are improved, and the flexibility and convenience of the acquisition system are improved.
Owner:CHINA UNIV OF MINING & TECH
Epoxy resin and graphene composite heat dissipation coating for 6061 aluminum alloy plate and preparation method
InactiveCN112063266AHigh mechanical strengthImprove stabilityAnti-corrosive paintsEpoxy resin coatingsFirming agentReactive diluent
The invention relates to the technical field of heat dissipation coatings for electronic components, in particular to an epoxy resin and graphene composite heat dissipation coating for 6061 aluminum alloy plates and a preparation method. The coating is prepared from the following components in parts by weight: 15-25 parts of epoxy resin, 4-6 parts of a reactive diluent, 1-2 parts of a dispersing agent, 3-5 parts of a curing agent, 2-3 parts of a cerium compound, 1-1.5 parts of a nitrogen-boron compound, 2-3 parts of a titanium compound and 0.0008-0.0012 part of graphene oxide powder. Epoxy resin and the curing agent of the heat dissipation coating are cross-linked to form a network-shaped chemical structure with high mechanical strength, the network-shaped chemical structure is used as a matrix, three radiation fillers including the cerium compound, the nitrogen-boron compound and the titanium compound and graphene oxide powder are used as fillers, and the heat dissipation coating is good in cohesiveness, adhesiveness, stability, chemical resistance and insulativity and high in mechanical strength. Most importantly, the heat dissipation coating is of an industrial grade, but the improvement of the heat dissipation performance of the 6061 aluminum alloy plate after the heat dissipation coating is applied to the 6061 aluminum alloy plate is superior to that of an existing nanoscale heat dissipation coating.
Owner:GUANGDONG MORION NANOTECHNOLOGY CO LTD
Hysteresis type power supply circuit
ActiveCN106026656ASimple structureLow costDc-dc conversionEmergency protective arrangement detailsHysteresisFeedback circuits
The invention discloses a hysteresis type power supply circuit, which comprises an input circuit, a switch combination circuit, a sampling and controlling circuit, a feedback circuit and an output circuit. The input circuit is connected to the input end of a power supply, rectifies the power input and provides isolation protection for the input end. The switch combination circuit is connected to the input circuit, turns on or turns off the input circuit to control the output power from the output end of the power source. The sampling and controlling circuit samples the output voltage, compares the output voltage with the reference voltage, and controls the opening and closing of the switch combination circuit according to the comparison result. The feedback circuit is arranged between the switch combination circuit and the sampling and controlling circuit. The switch combination circuit outputs positive feedback signals to the sampling and controlling circuit through the feedback circuit. The positive feedback signals cause a hysteretic effect of the comparison action of a reference power supply chip. The output circuit is connected to the switch combination circuit so as to filter the output of the switch combination circuit and to provide isolation protection for the output end and the output of the output circuit is used as the output of the hysteresis type power supply circuit.
Owner:SEARI ELECTRIC TECH +2
Data controlling method for medium player system
InactiveCN1614953AImprove efficiencyRaise the upper limitData switching networksLower limitData terminal
The system consists of a data terminal and a displaying terminal. The displaying terminal is connected with the data terminal through a network. The data terminal includes an encoder used in encoding media data. The displaying terminal includes a buffer used in storing package of media data. The method compares the package numbers of media data stored in the buffer with an upper limit value and a lower limit value. If the package numbers is more than the upper limit value the encoding speed for the media data will be reduced. If the package numbers is less than the lower limit value the encoding speed for the media will be increased.
Owner:BENQ CORP
Shunting type CVT (Continuously Variable Transmission) mechanism and torque transferring method thereof
InactiveCN102562993AExtended service lifeReduce loadDifferential gearingsTransmission beltShunt types
The invention relates to a shunting type (Continuously Variable Transmission) mechanism and a torque transferring method thereof. The shunting type mechanism comprises a box body (1), an input belt pulley mechanism (2), an output belt pulley mechanism (3) and a torque output mechanism (8), wherein the input belt pulley mechanism (2) and the output belt pulley mechanism (3) are connected with the box body (1) and a transmission belt (15) is connected between the input belt pulley mechanism (2) and the output belt pulley mechanism (3), a first gear (4) is connected with a transition gear mechanism (5) connected with a shell gear (68), a first differential mechanism (6) is arranged on the box body (1), two sides of the first differential mechanism (6) are respectively provided with a second gear (10) and a third gear (9), a second differential mechanism (7) is fixedly arranged on the box body (1), two sides of the second differential mechanism (7) are provided with a fourth gear (12) and a fifth gear (11), and the second differential mechanism (7) is connected with the torque output mechanism (8). According to the shunting type mechanism disclosed by the invention, an input torque is divided into two parts so that the load of the transmission belt is lightened and the upper limit of a transferring torque is largely increased.
Owner:宁波安能捷机电科技有限公司
Quick response access control method and system
InactiveCN109658562ARaise the upper limitReduce data volumeIndividual entry/exit registersSubcutaneous biometric featuresBiometric dataComputer science
The invention discloses a quick response access control method and system. The method comprises steps that S1, a user biological characteristic database is established; S2, other identity identification systems and the user biological characteristic database are utilized to establish a priority comparison database; S3, a secondary comparison database is formed according to the user biological characteristic database and the priority comparison database; S4, the user biological characteristic information is acquired; S5, the collected biological characteristic information is matched to the priority comparison database, if matching is successful, a door opening command is sent to control door opening, if matching is unsuccessful, the process proceeds to a S6; and S6, the biological characteristic information is matched with the secondary comparison database, if matching is successful, the door opening command is sent to control door opening, if matching is unsuccessful and fails, the process returns to the S4. The method is advantaged in that the comparison speed of biological characteristic identification access can be improved, the access user limit is enhanced, and thereby user experience is improved.
Owner:东浓智能科技(上海)有限公司
ZigBee-IP hybrid network
InactiveCN107592253ARaise the upper limitNetwork topologiesStar/tree networksNetwork structureStructure of Management Information
The invention discloses a ZigBee-IP hybrid network. The ZigBee-IP hybrid network comprises central control equipment, and IP network equipment and a central node which are connected with the central control equipment respectively, wherein the central node comprises a gateway and a coordinator; the central node is connected with ZigBee network equipment; the central control equipment is the centerof the whole network, and comprises a driver loader; the gateway is provided with bridging equipment of two networks; and the central control equipment is provided with a corresponding driver for performing specific network access authentication and automatic loading on equipment in a ZigBee network. Through adoption of the ZigBee-IP hybrid network, the ZigBee network can be limited to a certain extent, a network structure with a central node is adopted, and the upper limit of the network scale is raised.
Owner:SUZHOU INSONA INTELLIGENT TECH
High voltage XLPE cable and accessory fundamental wave and multi-harmonic wave superposition testing device
PendingCN107677943ASimultaneous transmissionRaise the upper limitTesting dielectric strengthCapacitanceVoltage amplitude
The invention discloses a high voltage XLPE cable and accessory fundamental wave and multi-harmonic wave superposition testing device, and relates to the power cable detection technical field; the high voltage XLPE cable and accessory fundamental wave and multi-harmonic wave superposition testing device comprises an AC power supply, a fundamental wave and multi-harmonic wave superposition generation unit, a fundamental wave and multi-harmonic wave superposition control unit, an intermediate transformer, a compensation reactor, a standard capacitance unit, a voltage analyzer and a test loop unit; the fundamental wave and multi-harmonic wave superposition voltage signals can be simultaneously transmitted; the testing device can precisely control each harmonic wave voltage amplitude and content, can realize fundamental wave voltage and multi-harmonic wave voltage integrated control and output, and can test the insulation performance of the high voltage XLPE cable and accessories under thefundamental wave and multi-harmonic wave superposition voltage effect.
Owner:ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
Implementation method of openstack full-distributed dhcp service
InactiveCN110851238ARaise the upper limitReduce complexityNetworks interconnectionSoftware simulation/interpretation/emulationOperational systemInternet traffic
The invention discloses an implementation method of an openstack full-distributed type dhcp service, relating to the field of cloud computing. The method comprises steps of deploying dhcp services onall the computing nodes; creating a namespace on each computing node; creating a trunk port on the virtual machine network bridge and associating with the namespaces; setting a rule of the flow table,only allowing network flow of a related port of a virtual machine to flow through the trunk port, establishing a dhcp service process after the port of the virtual machine is bound with a computing node, and only allowing a dhcp service of the computing node to run in the namespace of the computing node. According to the method provided by the invention, the service of the dhcp is only provided by the process of the node; the network does not pass through the network card and directly corresponds to the operating system, so that the performance of the system can be greatly improved, the configuration file of the dnsmasq is simplified, only the information related to the single network card needs to be configured, and the complexity of the configuration file is reduced.
Owner:SHANDONG LANGCHAO YUNTOU INFORMATION TECH CO LTD
Fuse and circuit system
ActiveCN112908805AQuick cutRaise the upper limitBattery cutoff switchesSwitch power arrangementsClosed chamberHemt circuits
Owner:XIAN ZHONGRONG ELECTRIC CO LTD
Electric axle driving system and automobile
InactiveCN106553524ALower option requirementsRaise the upper limitControl devicesForce generationElectric vehicle
An electric axle driving system is used for an electric automobile or a hybrid electric vehicle and comprises a motor, a speed reduction mechanism and a differential mechanism. The speed reduction mechanism is used for amplifying driving force generated by the motor and allocating the driving force to wheels through the differential mechanism. The speed reduction mechanism can amplify the driving force through two different transmission ratios. In the process from driving force generation to allocation of the driving force to the wheels, amplification is conducted at least three times. Within the limited space range, the transmission ratio is increased, and accordingly the workpiece selection requirement of the motor is lowered or the torque output upper limit is increased.
Owner:SCHAEFFLER TECH AG & CO KG
Epoxy resin and graphene composite heat dissipation coating for aluminum alloy form relieved tooth radiator and preparation method
The invention relates to the technical field of radiator coatings, in particular to an epoxy resin and graphene composite heat dissipation coating for an aluminum alloy form relieved tooth radiator and a preparation method of the epoxy resin and graphene composite heat dissipation coating. The composite coating is prepared from 15-25 parts of epoxy resin, 4-6 parts of reactive diluent, 1.2-1.8 parts of dispersing agent, 0.4-0.6 part of leveling agent, 3-5 parts of curing agent, 0.4-0.6 part of magnesium compound, 1-1.5 parts of cerium compound, 1-1.5 parts of carbon nano tube, 0.4-0.6 part ofnitrogen boron compound, 1-1.5 parts of carbon fiber, 1-1.5 parts of copper compound, 0.4-0.6 part of titanium compound and 0.0008-0.0012 part of graphene. The heat dissipation coating has excellent cohesiveness, adhesiveness, stability, chemical resistance, insulativity and high mechanical strength, and most importantly, the heat dissipation coating is industrial, but the improvement of the heatdissipation performance of a radiator after the heat dissipation coating is applied to the radiator is superior to the improvement of the heat dissipation performance of an existing nanoscale heat dissipation coating.
Owner:GUANGDONG MORION NANOTECHNOLOGY CO LTD
Voltage continuously adjustable electric exploding foil volt-ampere characteristic testing device and charging and discharging method
ActiveCN112924800ADetonation guaranteeRaise the upper limitBatteries circuit arrangementsElectrical testingCapacitanceHemt circuits
The invention relates to a slapper detonator electric exploding foil volt-ampere characteristic testing device, in particular to a voltage continuously adjustable electric exploding foil volt-ampere characteristic testing device and a charging and discharging method. The problems are solved that a traditional slapper detonator electric exploding foil volt-ampere characteristic testing device cannot be miniaturized, is poor in use economy and is limited in application range. The voltage continuously adjustable electric exploding foil volt-ampere characteristic testing device comprises a main circuit, a control circuit and a signal generator, and the main circuit comprises a transformer, a field effect transistor, a relay, a first optocoupler, a second optocoupler, a diode, first to fifth capacitors and first to eighth resistors. The transformer is a flyback transformer; the relay is a high-voltage reed pipe relay; the fifth capacitor is a high-voltage capacitor; and the fifth resistor is an adjustable resistor. The device is suitable for the electric explosion performance test of the electric explosion foil.
Owner:ZHONGBEI UNIV
Swinging method of large-scale square object and crane thereof
ActiveCN103112780ARaise the upper limitReduce overall heightTravelling cranesTrolleysEngineeringOverhead crane
The invention discloses a swinging method of a large-scale square object. The scheme of four-lifting-point hoisting is that a bridge crane is provided with two sets of the lifting mechanisms, each lifting mechanism is provided with two lifting points, the four lifting points are utilized to lift the large-scale square object, and a balance arm device is arranged between the two of the four lifting points; and the whole crane is regarded as a lifting system, the two connected lifting points form a lifting point of the system, the four-lifting-point excessive positioning problem is solved, the stable rise and fall and swing of the large-scale square object are realized, and the swinging level of the large-scale square object is improved to the new height. The invention simultaneously discloses a crane of the large-scale square object using the swing method, the crane has the advantages that the design is reasonable, the operation is stable, and the cane is worth of popularizing and applying.
Owner:ZHUZHOU TIANQIAO CRANE
Ultralarge-diameter-ratio asynchronous rolling mill and plate rolling method
ActiveCN112845607AReduce rolling forceReduce warpageMetal rolling stand detailsGuiding/positioning/aligning arrangementsShear stressStructural engineering
The invention belongs to the technical field of plate machining equipment, and particularly relates to an ultralarge-diameter-ratio asynchronous rolling mill and a plate rolling method. The ultralarge-diameter-ratio asynchronous rolling mill comprises a rolling mill rack, a press-down device, a balancing device, an upper roller system and an arc-shaped plate device. An arc-shaped plate and an upper roller are oppositely arranged, and the arc-shaped plate and the upper roller cooperate with each other to complete rolling of a plate strip. According to the ultralarge-diameter-ratio asynchronous rolling mill, ultralarge-reducing-ratio and different-speed rolling can be realized, a large bite angle is provided, and bite is facilitated; the external friction force borne by a rolled piece is reduced, and the plate strip forming quality is improved; and the reducing ratio and the different speed ratio can be adjusted within a wide range, and according to process conditions, the metal shear stress is improved, a twisting and rolling area is enlarged, metal deformation is promoted, rolling force is reduced, and energy consumption is reduced.
Owner:TAIYUAN UNIV OF TECH
Metal mask plate preparation method
InactiveCN107419216AHigh precisionRaise the upper limitVacuum evaporation coatingSemiconductor/solid-state device manufacturingOrganic filmPhotoresist
The present invention relates to the technical field of mask plate manufacturing, particularly to a metal mask plate preparation method. According to the present invention, a photoresist layer with a plurality of openings is formed on an organic film, and after a metal film is formed in the opening, the metal film is peeled off to form a mask plate, such that the precision of the mask plate and the upper limit of the PPI can be improved.
Owner:EVERDISPLAY OPTRONICS (SHANGHAI) CO LTD
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