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111 results about "Velocity modulation" patented technology
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Velocity modulation. noun. : modification of the velocity of a stream of electrons by imparting alternate accelerations and decelerations to the electrons in such a way that they are caused to bunch together with the result that each bunch causes a cycle of current as it passes an output electrode.
Vehicle air conditioner control method and control method thereof
ActiveCN101428544AOptimize circuit designMeet multi-functional requirementsMechanical apparatusAir-treating devicesActuatorControl theory
The invention provides an auto air-conditioner control system and a control method thereof, and aims to satisfy the requirements of security and comfort. The system comprises an air-conditioner control unit. The air-conditioner control unit receives signals from an internal temperature sensor, a sunlight sensor, an external temperature sensor, an air quality sensor and an evaporator temperature sensor and sends control commands to control the work of an electric velocity modulation module, a blower, an internal and external throttle actuator, a mixture throttle actuator, a pattern throttle actuator and a defrosting throttle actuator, especially the air-conditioner control unit is connected with a front body electronic control system and an engine electronic injection control system through a CAN bus; and the air-conditioner control unit adjusts the work of the air condition system through the state information of the front body electronic control system and the engine electronic injection control system. The system optimizes circuit design, simplifies the operation procedure, satisfies the comfort requirement of a driver, and improves maintenance convenience and the reliability and safety of the system.
Owner:CHERY AUTOMOBILE CO LTD
Mixed field excitation type flux switch motor
InactiveCN101277053AImprove robustnessSuitable for high speed operationSynchronous machinesElectric machineExcitation current
The present invention provides a hybrid field excitation flux switching electric motor. On one hand, a stator part adopts a centralized armature winding, an exciting winding, a straight channel rotor, and a permanent magnet arranged in the stator. On the other hand, the rotor part is a salient pole and is not provided with a permanent magnet or a winding. The structure is extraordinary simple and durable. The electromagnetic capability of four centralized armature coils which are designed to form a single-phase armature winding is controlled by the corresponding exciting winding coil through the exciting current. On structure, the advantages of compactness, simpleness, good robustness and suitability for operation with high speed of the permanent magnet flux switching electric motor are kept. The function of hybrid field excitation can be realized without additionally adding the volume of the electric motor. The electric motor is guaranteed to have stronger torque output capability and higher power density. The electric motor is especially suitable for the application occasion with high volume and large output. The functions of large torque in torque-constant area and broad velocity modulation in power-constant area can be realized.
Owner:SOUTHEAST UNIV
Device and method for continuously preparing active carbon by biomass in bulk
InactiveCN101885487ASolve for uniformityAvoid intermediate manual linksCarbon compoundsEnergy inputCombustionCarbonization
The invention relates to a device and a method for continuously preparing active carbon by a biomass in bulk. The invention is characterized in that the device comprises a spiral dryer (1), a spiral carbonization activation device (2), a spiral cooling device (3), a combustion furnace (4), a waste heat boiler (5), a circulating fan (6), a blower (7), an induced fan (8), a chimney (9), a velocity modulation motor (10), a spray tower (14), a waste liquor circulation pool (15), and a circulation water pump (16), wherein the spiral dryer (1) is provided with a feed port (11), a waste air outlet(1a), a material outlet after drying (13), a coil and a sleeve; and the spiral carbonization activation device (2) comprises a carbonization section (2-1) and an activation section (2-2) communicated with the carbonization section (2-1). By using the invention, the defects of low heat utilization efficiency, low drying / carbonization / activation efficiencies, discontinuous production course and the like in the existing active carbon preparation technology are overcome.
Owner:SOUTHEAST UNIV
Noise reduction device and television receiver
InactiveUS20050212972A1Reduce noiseLower Level RequirementsTelevision system detailsTelevision system scanning detailsTelevision receiversNoise detection
A noise reduction circuit performs noise reduction by an arithmetic operation on an input video signal and its one-frame delayed video signal. At that time, a noise reduction level is always maintained at a constant value that suppresses a trail behind a moving image. An aperture correction circuit performs image-quality correction by using a high frequency component extracted from the video signal as a correction signal. When a detection level of a noise detection circuit exceeds a predetermined value, the level of the correction signal is controlled to decrease. A velocity modulation circuit supplies the high frequency component extracted from the video signal to an auxiliary deflecting coil of a cathode ray tube as a scanning velocity modulation signal so as to perform image-quality correction. When a detection level of the noise detection circuit exceeds a predetermined value, the level of the scanning velocity modulation signal is controlled to decrease.
Owner:KK TOSHIBA
Lumber feed system with load responsive speed modulation
InactiveUS6220423B1Precise position controlAccurate flow regulationFeeding devicesControl devices for conveyorsVelocity modulationHigh rate
The disclosure describes a system to provide a steady supply of lumber pieces to a board separating device and insure the correct positioning of each lumber piece, at the proper time, thus allowing the separating device to function at a substantially higher rate than hitherto possible with previously known infeeding arrangements.
Owner:BID GRP TECH LTD +1
Enclosed return circuit hydraulic beam-pumping unit utilizing frequency conversion technology
This invention publicized one kind to use the frequency conversion technology closed type the return route hydraulic pressure pumping unit The application frequency conversion technology control motor rotational speed, the control pumps the output current capacity, then the control pumping unit running rate, may enable the oil pump the dynamic coordination, the production increase, the energy conservation obvious: The frequency conversion velocity modulation can provide the current capacity according to the system demand the low overflow loss, how regardless of the load does change, the output all can adapt the load request change, has very strong automatic control About the use the limit switch, the speed, the position transmitter and so on, through the controller, the frequency changer realization to the electric motor and the control valve electro-magnet and so on the vector transformation control technology, the realization overloads, crosses the electric current, overvoltage, the instant loses speed and so on the protection function This invention from enhances the pumping unit the overall efficiency to embark, in reduces the pumping unit the installing equipment power, effectively uses the pumping unit under good energy at the same time, maximum limit enhances the hydraulic pump and the electrical machinery efficiency This pumping unit may widely apply to the oil field extraction
Owner:ZHEJIANG UNIV
Light and small type permanent magnetic packaging Ku waveband coaxial transition device
ActiveCN108470667AEfficient emissionsGuaranteed normal transmissionTransit-tube cathodesReflex klystronsElectrical conductorElectromagnetic field
The invention relates to a light and small type permanent magnetic packaging Ku waveband coaxial transition device. The cathode A of a focusing cathode E is loaded; explosion electronic emission occurs under the condition of externally added high voltage; after electronic beams pass cascading double resonance reflection cavities, initial speed pre-modulation is acquired; speed modulation is completely converted into density modulation; high-frequency electric fields in the cavities are extracted and sufficient interactions occur between the high-frequency electric fields and clustering electronics transmitted therein; generated Ku waveband HPM is externally coupled and output through coaxial output waves; and finally, coaxial grooves in an inner conductor B absorb electronic beams of restenergy. The intensity of the generated electric fields is 0.3T, the weight of the permanent magnet is 63.5kg; and under the guidance magnetic field, effective emission and transmission of the electronic beams are achieved. By introducing the cascading double resonance reflection cavities, coupling of the electromagnetic fields in the modulation cavities to diode regions is reduced, radial fluctuation of the electronic beams is reduced and the required guidance magnetic field is reduced. The working mode of the device is TM02, so the novel device is allowed to have quite high power cavity in the Ku waveband.
Owner:NAT UNIV OF DEFENSE TECH
Velocity modulation fuel saving diesel-electric set electric supply tyre type gantry container crane
InactiveCN101348215ALow costMeet normal operation requirementsBase supporting structuresBraking devices for hoisting equipmentsFrequency changerCapacitance
The invention relates to a tire-type gantry container crane with power supplied by a speed-control fuel-saving diesel generating set, which is characterized in that the crane comprises an electrical system; a three-phase AC power source generated by the diesel generating set capable of operating at variable speed, together with a speed control device thereof, is converted into a DC power source via a power electronic reversible rectifying device used for controlling the generated electricity quantity of the diesel generating set, and then direct current is directly supplied to frequency converters driving mechanisms to operate; the DC power source is converted into an AC power source with adjustable frequency so as to be used for driving a hoisting mechanism, a cart mechanism and a trolley mechanism; a super capacitor set is connected with a DC side bus in parallel; the total capacitance of the super capacitor set is below 10 farad; and a central control link is formed by an intelligent industrial control system and is used for detecting the current and voltage states on the DC bus so as to calculate the power situation of the DC bus, and then the power situation is used as the speed control basis of the diesel generating set so as to control the rotating speed and torque of a generator. The container crane has the advantages of low cost, energy conservation and environmental protection.
Owner:北京运达伟业科贸有限责任公司
Tunnel intelligent ventilating control method
ActiveCN107288675AAchieve energy saving and emission reductionEfficient ventilationMining devicesTunnel/mines ventillationFrequency changerIntegral action
The invention discloses a tunnel intelligent ventilating control method. Corresponding deviation and a deviation change rate are calculated through the pollutant concentration, the wind speed and the traffic volume parameters fed back by a field detector, then the values of a proportionality coefficient Kp, an integral action coefficient Ki and a derivative action coefficient Kd are regulated according to a preset fuzzy control rule, the control frequency of a frequency converter is obtained through PID operation, a jet fan is controlled to convert frequency and operate, the ventilation environment in velocity modulation is rapidly changed, the pollutant concentration and the wind speed parameters are circularly fed back, the current control frequency is continuously calculated and output, and demand ventilation is achieved.
Owner:CHINA MERCHANTS CHONGQING COMM RES & DESIGN INST
Liquid ejection system including drop velocity modulation
ActiveUS8657419B2Minimizing drop volume variation of dropQuality improvementPrintingLiquid jetSpray nozzle
A continuous ejection system includes a chamber containing liquid under pressure sufficient to eject a liquid jet through a nozzle. A drop formation device modulates the jet causing portions to break into drop pairs including first and second drops separated in time on average by a drop pair period. A charging device includes a varying electrical potential source providing a waveform including first and second distinct voltage states and a period equal to the drop pair period. The charging device produces first and second charge states on first and second drops of the drop pair, respectively. A drop velocity modulation device varies a relative velocity of first and second drops of selected drop pairs causing first and second drops of selected drop pairs to form combined drops having a third charge state. A deflection device causes the first, second, and combined drops to travel along different paths.
Owner:EASTMAN KODAK CO
A home sewer motor actiyator
InactiveCN101237210AControl outputControl output torqueSewing-machine control devicesField or armature current controlElectricityLow speed
The invention belongs to the sewing machine manufacturing technique technical field and relates to a motor velocity modulation controller of a domestic sewing machine. The motor velocity modulation controller is in electric connection with a power supply and a motor and comprises a rectification circuit, a regulated power supply circuit, a detection and control circuit, a plug-in unit and a foot pedal control circuit, wherein, the rectification circuit is in electric connection with the power supply, the regulated power supply circuit, the detection and control circuit and the plug-in unit, the detection and control circuit is in electric connection with the plug-in unit and the motor, the plug-in unit is in electric connection with the foot pedal control circuit. The motor velocity modulation controller of the domestic sewing machine can regulate the output moment of the motor automatically according to the size of the practical load and effectively controls the motor to realize the output with low speed and great moment, thereby ensuring that a shank runs stably when thick cloth is sewed. In addition, the motor velocity modulation controller of the domestic sewing machine of the invention is also provided with a shank stopping sensor; when the sensor receives the stopping command, the top stitch position of the shank can be found and the machine stops at the position.
Owner:NINGBO GUGAO NC SCI & TECH
Repair device for semi-automatic electric rush plating of automobile engine cylinder body plane
Disclosed is a semiautomatic electric brush plating repair device for automobile engine cylinder plane in the vehicle technology filed, wherein a direct current velocity modulation electrical machine is fixed at a large carriage and meshes with rack gears fixed at a machine frame, an extensible guide is horizontally arranged at the machine frame and is equipped with limiting switches at its both ends, a feeding worm is connected together with a cutting feed spider handle which are fixed at the large carriage, a small carriage and the feeding worm form a screw drive mechanism, an anodization head and a liquid supply nozzle are fixed at the small carriage, an engine cylinder is horizontally deposited at an elevating table trolley, a liquid supply bath, a drawing liquid pump, a perfusion tube and a liquid supply nozzle constitutes a liquid supply system, two poles (positive and negative) connected externally with the brush plating electrical source are connect to a plating head and the engine cylinder. By applying the present invention, the work efficiency for improving cylinder repair and the stability of manufacturing technique can be improved, and the mass repair of automobile engine cylinder can be realized, and then requests for green circulation economics can be thoroughly embodied.
Owner:SHANGHAI BESTECH MECHANICAL TECH
High power wide velocity modulation built-in permanent magnet brushless wheel motor for electric automobile
InactiveCN101436793AIncrease powerRun at high speedMagnetic circuit rotating partsElectric machinesInsertion depthMagnetic poles
The invention relates to a high-power wide-speed adjustment built-in permanent magnet brush wheel-free motor for an electric automobile, which comprises a shell, and a rotor and a stator arranged in the shell. The rotor comprises a stator core and a stator winding which are fixed on the inner wall of the shell. The stator core comprises a stator yoke, a stator slot and a stator tooth. The rotor comprises a rotating shaft and a rotor core. An inner circle of the rotor core is uniformly embedded with radical magnetizing rectangular magnetic steel strips or cracked radical magnetizing rectangular steel strips along the circumferential direction. The radical magnetizing rectangular magnetic steel strips or the cracked radical magnetizing rectangular steel strips form permanent magnetic poles. An external circle of a pole shoe of a rotor is of a non-concentric arc-shaped curved surface and provided with non-uniformly symmetric radial air gaps. Magnet-shielding magnetic bridges are arranged between the magnetic poles and the high saturation of a magnetic circuit at a cross section of the magnet-shielding magnetic bridges is ensured. The radical insertion depth of the magnetic steel strips in the core, the width of an empty groove of a magnet-embedding steel groove, the angle of the empty groove of the magnet-embedding steel groove, the angle of polar arc and so on are adjusted to realize smooth operation with high efficiency, high power output, wide speed adjustment and quick response.
Owner:苏州和鑫电气股份有限公司
Liquid ejection method using drop velocity modulation
ActiveUS8469496B2Minimizing drop volume variation of dropQuality improvementPrintingLiquid jetEngineering
A liquid jet, ejected through a nozzle, is modulated using a drop formation device to cause the jet to form drop pairs, including first and second drops, traveling along a path separated in time on average by a drop pair period. A charging device, synchronized with the formation device, produces first and second charge states on the first and second drops, respectively, using a waveform including a period equal to the drop pair period and first and second distinct voltage states. A relative velocity of first and second drops from a selected drop pair is varied using a velocity modulation device to control whether the first and second drops of the selected drop pair form a combined drop having a third charge state. A deflection device causes the first, second, and combined drops having the first, second, and third charge states to travel along first, second, and third paths, respectively.
Owner:EASTMAN KODAK CO
Reciprocating petroleum beam-pumping unit with hydraulic transmission
A hydraulic transmission petroleum mining pumping unit, it compose of foundation, front bracket, rear bracket, up pull-rod and diagonal pull-rod that are connected by hinge, hydraulic transmission assembly is set between front and rear bracket which compose of slide-block type variable and reversing gear hydraulic pump of combinational flat valve, slide-block type plate transmission low-speed torque hydraulic motor, oil-box and accessories group of pipe line, that is the transmission system operates opening pump motor to volume velocity modulation and reversing loop, and combine by hydraulic transmission wheel connecting with transmission pieces of mining pump, control by machined, electric and hydraulic adjustable system to work continuously and reciprocally with the needful stroke and stroke time.
Owner:彭利
High-power millimeter-wave and terahertz wave signal frequency multiplier device
InactiveCN103050356ALow costStable high-frequency millimeter waveTransit-tube circuit elementsWave structureLow frequency band
The invention discloses a high-power millimeter-wave and terahertz wave signal frequency multiplier device, which comprises a low-frequency-band slow-wave structure, a high-frequency-band slow-wave structure and a drift tube, wherein the drift tube is connected between the low-frequency-band slow-wave structure and the high-frequency-band slow-wave structure. A low-frequency-band millimeter wave or terahertz wave and an electron beam are interacted in the low-frequency-band slow-wave structure to generate velocity modulation, the electron beam generates electron bunching and density modulation in a drift tube area, and the bunched electron beams carry signals to excite high-frequency electromagnetic waves in the high-frequency-band slow-wave structure and the high-frequency electromagnetic waves are amplified. The device provided by the invention can obtain stable high-frequency-band millimeter wave and high-frequency terahertz wave signals, and simultaneously has the characteristic of low cost.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Device and method for mechanically controlling exposure time
InactiveCN101634792ALarge dynamic rangeImprove consistencyShuttersTelescopesBrushless motorsGround system
The invention provides a device for mechanically controlling exposure time, which comprises a disc-like shutter with a fan-shaped hole, a direct current brushless motor for controlling the rotation of the disc-like shutter, and a control circuit for controlling the rotational speed of the direct current brushless motor, wherein the control circuit is used for computing the rotational speed of the direct current brushless motor according to the currently-required exposure time and the current position of the disc-like shutter, and controlling the direct current brushless motor to work at the rotational speed. The invention simultaneously provides a corresponding method for controlling the exposure time. The device and the method utilize a speed modulation and large-hole residing mode to realize the exposure time, and can realize 27 segments of exposure time, wherein the minimum accurate exposure time can reach 2 ms and the maximum accurate exposure time can be infinitely extended upwards, thus the dynamic range is wide; the consistency, the uniformity and the reliability are all good; the accuracy is high; and the device and the method can be applied to aerospace systems and ground systems.
Owner:NAT SPACE SCI CENT CAS
Liquid ejection system including drop velocity modulation
ActiveCN103547456AReduces the possibility of splashingReduce complexityInking apparatusLiquid jetVelocity modulation
A continuous liquid ejection system includes a liquid chamber in fluidic communication with a nozzle. The liquid chamber contains liquid under pressure sufficient to eject a liquid jet through the nozzle. A drop formation device is associated with the liquid jet and is actuatable to produce a modulation in the liquid jet that cause portions of the liquid jet to break off into a series of drop pairs traveling along a path. Each drop pair is separated in time on average by a drop pair period. Each drop pair includes a first drop and a second drop. A charging device includes a charge electrode associated with the liquid jet and a source of varying electrical potential between the charge electrode and the liquid jet. The source of varying electrical potential provides a waveform that includes a period that is equal to the drop pair period. The waveform also includes a first distinct voltage state and a second distinct voltage state. The charging device is synchronized with the drop formation device to produce a first charge state on the first drop and to produce a second charge state on the second drop. A drop velocity modulation device varies a relative velocity of a first drop and a second drop of a selected drop pair to control whether the first drop and the second drop of the selected drop pair combine with each other to form a combined drop. The combined drop has a third charge state. A deflection device causes the first drop having the first charge state to travel along a first path, causes the second drop having the second charge state to travel along a second path, and causes the combined drop having the third charge state to travel along a third path.
Owner:EASTMAN KODAK CO
Superconducting engine
InactiveCN101247069AReduce energy consumptionImprove efficiencyDynamo-electric machinesSuperconductor elements usageElectric machineHigh energy
A superconducting engine relates to a superconducting direct-current motor, wherein, the electric motor is composed of a stator, a rotor and a bearing. The rotor is provided with a U-shaped annular groove single-pole magnetic field surrounded by the permanent magnet. The stator is provided with a U-shaped annular groove single-pole magnetic field which is arranged in the rotor and a superconducting armature coil that spaces the permanent magnet of the rotor with a clearance. The superconducting armature coil is immersed in the refrigeration liquid and generates cyclic current in the superconducting armature coil thereby driving the engine to work. The motor has the advantages of no commutator, no electric brush, and no iron loss in stable operation, extraordinary high energy saving rate, extraordinary high efficiency, long service lifetime, easy velocity modulation and broad usage.
Owner:刘新广
Modulated laser range finder and method
The invention provides a modulated laser range finder and method. The laser range finder including a laser configured to project a laser beam onto a target object thereby causing a target beam to be reflected from the target object, wherein the laser beam has a frequency, and wherein the frequency is modulated at a known rate, a first beam splitter positioned to split a reference beam from the laser beam, a second beam splitter positioned to receive the target beam and the reference beam, wherein the target beam and the reference beam are coherently combined, the coherently combined beams establishing a difference frequency, and a detector configured to measure the difference frequency.
Owner:THE BOEING CO
Building internal thermal energy circulation utilizing system integrated energy-saving device
InactiveCN101067528AReduce evaporated waterLow costHeat pumpsDomestic hot-water supply systemEngineeringEnergy conservation
The invention discloses an integration energy conservation installment of building internal heat energy circulation use system, including frequency conversion velocity modulation intelligence control device, central air-conditioning system equipment, disc heat interchanger and heat pump unit, among: after parallel connected with the one side feed-water end of the heat pump unit (12), the disc heat interchanger (26) one side feed-water end through the one feed-water motorized valve (15) of the heat pump unit (12) connects the cooling water discharging piping(38), after parallel connected with the one side water exit end of the heat pump unit (12), the disc heat interchanger (26) one side water exit end through the one water exit motorized valve (13) of the heat pump unit (12) connects the cooling water feed-water piping(37); the input end of the frequency conversion velocity modulation intelligence control device connects the related sensor of the air conditioning main engine(2), the output end connects the related working pump and the stand-by pump of the air conditioning main engine(2). The invention can raises the lower order heat energy of building internal cooling water, center water, fire control water to the higher order heat energy, shifts and uses this kind of heat energy, directly prepared the hygienic hot water which is used for the user.
Owner:贵州华城楼宇科技有限公司
Liquid ejection method using drop velocity modulation
ActiveUS20120300001A1High resolutionMinimizing drop volume variation of dropPrintingLiquid jetElectric potential
A method of ejecting liquid drops includes providing liquid under pressure sufficient to eject a liquid jet through a nozzle of a liquid chamber. The liquid jet is modulated to cause portions of the liquid jet to break off into a series of drop pairs traveling along a path using a drop formation device. Each drop pair is separated in time on average by the drop pair period. Each drop pair includes a first drop and a second drop. A charging device is provided that includes a charge electrode associated with the liquid jet and a source of varying electrical potential between the charge electrode and the liquid jet. The source of varying electrical potential provides a waveform that includes a period that is equal to the drop pair period. The waveform also includes a first distinct voltage state and a second distinct voltage state. The charging device is synchronized with the drop formation device to produce a first charge state on the first drop and to produce a second charge state on the second drop. A relative velocity of a first drop and a second drop of a selected drop pair is varied using a drop velocity modulation device to control whether the first drop and the second drop of the selected drop pair combine with each other to form a combined drop. The combined drop has a third charge state. A deflection device is used to cause the first drop having the first charge state to travel along a first path, to cause the second drop having the second charge state to travel along a second path, and to cause the combined drop having the third charge state to travel along a third path.
Owner:EASTMAN KODAK CO
Liquid ejection system including drop velocity modulation
ActiveUS20120300000A1High resolutionMinimizing drop volume variation of dropPrintingLiquid jetEngineering
A continuous liquid ejection system includes a liquid chamber in fluidic communication with a nozzle. The liquid chamber contains liquid under pressure sufficient to eject a liquid jet through the nozzle. A drop formation device is associated with the liquid jet and is actuatable to produce a modulation in the liquid jet that cause portions of the liquid jet to break off into a series of drop pairs traveling along a path. Each drop pair is separated in time on average by a drop pair period. Each drop pair includes a first drop and a second drop. A charging device includes a charge electrode associated with the liquid jet and a source of varying electrical potential between the charge electrode and the liquid jet. The source of varying electrical potential provides a waveform that includes a period that is equal to the drop pair period. The waveform also includes a first distinct voltage state and a second distinct voltage state. The charging device is synchronized with the drop formation device to produce a first charge state on the first drop and to produce a second charge state on the second drop. A drop velocity modulation device varies a relative velocity of a first drop and a second drop of a selected drop pair to control whether the first drop and the second drop of the selected drop pair combine with each other to form a combined drop. The combined drop has a third charge state. A deflection device causes the first drop having the first charge state to travel along a first path, causes the second drop having the second charge state to travel along a second path, and causes the combined drop having the third charge state to travel along a third path.
Owner:EASTMAN KODAK CO
Complete digital control alternating current-direct current velocity modulation and load application system for teaching
InactiveCN101354851AReduce labor intensityExperiment Efficient and FairEducational modelsOperational systemData acquisition
The invention relates to a full-digital control AC-DC speed adjustment and loading system for teaching. The core of the system comprises two parts of a hardware part and a software part. The system is characterized in that the software part is embedded in an operating system of the hardware part; in the hardware part, a movement control card and a data acquisition card of a computer are both connected with a test line, the test line is connected with a voltage signal feedback of rotary speed and current and an AC-DC motor, the AC-DC motor is coaxially connected with a magnetic powder brake, the data acquisition card is connected with the magnetic powder brake by a magnetic powder brake controller, and the remote programmable control loading is completed. The system of the invention has the advantages of digitization, intelligence, networking, simulating and systematization.
Owner:ZHEJIANG TIANHUANG TECH INDAL
Fingerprint authentication system and operation method
InactiveUS20100080424A1Simple and intuitive swipe guidanceCharacter and pattern recognitionAlarmsAuthentication systemComputer science
A fingerprint authentication system with a slide sensor provides guidance to help the user swipe his or her fingertip across the slide sensor at the ideal speed by modulating a pulse signal according to the swipe speed and converting the modulated pulse signal to an audible tone with a pitch that varies with the swipe speed, or to an equivalent visible display.
Owner:LAPIS SEMICON CO LTD
Three-dimensional high-speed wide view field tomography method and device thereof
ActiveCN108593605AGuaranteed resolutionGuaranteed light efficiencyAnalysis by material excitationPupilDepth of field
The invention provides a three-dimensional high-speed wide view field tomography method and a device thereof. The method comprises the following steps: 1, generating light beams; 2, performing high-speed space-time focusing surface scanning: performing dispersion and parallel collimation on the light beams, applying different phases to the light beams with different wavelengths / frequencies to carry out modulation in order to make the light beams have different time delays, and converging the modulated light beams onto a sample in order to form a focusing surface; 3, performing expanded field depth detection: arranging a high-speed zoom lens on the conjugate plane of the pupil entrance surface of an objective lens for lights formed by exiting the sample to achieve excitation end axial scanning synchronized imaging of object planes with different depths; and 4, simultaneously controlling: simultaneously controlling the light velocity modulation in the high-speed space-time focusing surface scanning step and the high-speed zoom lens in the developed field depth detection step. The method can improve the imaging speed and realize the high-time resolution three-dimensional imaging underthe premise of ensuring the spatial resolution.
Owner:浙江荷湖科技有限公司
Hydraulic system of back cavity proportionality velocity modulation garbage disposal apparatus
ActiveCN101324244AReasonable structureGuaranteed uptimeServomotor componentsServomotorsBridge typeEngineering
The utility model discloses a hydraulic system of a proportional speed-regulating garbage disposal device with a back cavity, which comprises a pushing oil cylinder and an oil tank; a back-cavity proportional speed-regulating circuit is arranged between the back cavity of the pushing oil cylinder and the oil cylinder; the back-cavity proportional speed-regulation circuit comprises a bridge-type return circuit composed of a first one-way valve, a second one-way valve, a third one-way valve and a fourth one-way valve; a proportional speed-regulating valve is arranged between the first one-way valve and the second one-way valve; a reversing valve is arranged between the bridge-type return circuit and the oil tank. The hydraulic system has a reasonable structure and ensures the stable operation of the oil cylinder at the normal crawl speed through a small-flow proportional speed-regulating valve. The return circuit is arranged in the return circuit of the back cavity of an executive oil cylinder and realizes proportional speed regulation through the bridge-type return circuit. The specification of the proportional speed-regulating valve is adopted on the basis of the flow required by the back cavity. The return circuit requirement of a large-flow proportional reversing valve can be satisfied through the small-flow proportional speed-regulating valve.
Owner:江苏指南润滑液压科技有限公司
Cathode ray tube apparatus having velocity modulation coil
InactiveUS7012360B2Modulation sensitivity improvesSimple structureTravelling sacksCathode-ray/electron-beam tube electrical connectionVertical deflectionPhosphor
A CRT apparatus is composed of a CRT, a deflection yoke, a velocity modulation coil, and a magnetic member. The CRT includes a glass bulb made up of a panel and a funnel connected together and an electron gun housed within the glass bulb, and emits an electron beam from the electron gun toward a phosphor screen formed on an inner surface of the panel. The deflection yoke includes a horizontal deflection coil and a vertical deflection coil, and scans the electron beam over the phosphor screen. The velocity modulation coil is arranged outside the CRT, and modulates a velocity at which the electron beam is scanned horizontally. The magnetic member is arranged to surround an outer circumference of the CRT with the velocity modulation coil positioned therebetween, so as to cover a position corresponding to a space between axially aligned electrodes of the electron gun.
Owner:PANASONIC CORP
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