Product
Patsnap Eureka
For R&D, Patsnap Eureka makes reading and utilizing patents & technical documents easy.
Patsnap Eureka AIR
Designed for self-driven R&D workflows. Generate viable solutions, solve complex R&D challenges, empower your innovation with AI.
Patsnap Eureka Materials
Designed for material experts only. Revolutionize your material R&D, from search, analyze, to developing new materials.
Feature
TechResearch
Generate reliable direction feasibility study reports for your R&D in just a few steps.
TechSeek
Discover and master advanced knowledge NOW. Basics, ideas, possibilities, all at once.
TechMind
As an expert in R&D Theories, TechMind can generates customized viable solutions instantly.
TechRisk
Analyze your overall solution with one click, know your potential R&D risks in advance.
TechMonitor
Get weekly tech updates, stay abreast of the latest tech innovations and key insights.
Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
34results about How to "Simple switch control" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
Power supply device and air conditioner using the same
InactiveUSRE39060E1Suppressing harmonic distortionReduce switching noiseAc-dc conversion without reversalEfficient power electronics conversionReverse currentPower factor correction circuits
This invention provides a power supply device capable of widening a conduction period of an input current by a simple control to improve a power factor, and reducing a harmonic distortion of the input current The power supply device comprises a rectifier circuit, a reactor, a power factor correction circuit having switching elements, capacitors and a reverse-current blocking rectifier elements, a smoothing capacitor for smoothing an output voltage of the power factor correction circuit to obtain a DC voltage, a pulse signal controller generating and outputting a pulse signal for turning on and off the switching elements, and a driver for receiving the pulse signal to drive a switching elements of the power factor correction circuit.
Owner:PANASONIC CORP
Non-blocking expandable multistage photoswitch array and working method thereof
ActiveCN102740177ARealize the exchange functionEasy to controlMultiplex system selection arrangementsPhotoswitchExchange network
The invention belongs to the technical field of optical communication, and particularly relates to a non-blocking expandable multistage photoswitch array and a working method thereof. The multistage photoswitch array is provided with kN input terminals and kN output terminals, and comprises a packet network with kN input terminals and kN output terminals and a switching network consisting of k N*N non-blocking switching units A. The kN output terminals of the packet network are divided into k output groups. Any one input terminal selected can be connected to the output terminal of any one group of output groups. The N output terminals on each output group are connected with the N input terminals on the switching unit A orderly. The invention has the advantages that a novel network topological structure is put forward, wherein the structure combines the characteristic that mono-stage switching network is simple to control and the advantages of multistage switching network which is low in cost and complexity of hardware. A syncretic topological structure is put forward. The N*N structure is selectively expanded to the kN*kN structure agilely according to the current network traffic. The non-blocking expandable multistage photoswitch array provided by the invention is simple in swapping control and has strict non-blocking characteristics.
Owner:SHANGHAI HUIJUE NETWORK COMM EQUIP
Connection module for the connection of a sensor to a fieldbus
ActiveUS7299310B2Simple switch controlEasy to controlProgramme controlTransmission systemsBus interfaceData format
The invention relates to a connection module for the connection of a sensor, in particular of an optoelectronic sensor, to a fieldbus, comprising a sensor interface for the connection of the connection module to an interface of a sensor, a serial bus interface for the connection of the connection module to an interface of a fieldbus and a gateway circuit which is connected to the bus interface and to the sensor interface in order to convert data received at the bus interface into a data format of a connected sensor and vice versa. The sensor interface of the connection module is made as a parallel interface. At least one I / O circuit is integrated into the connection module and is connected to the bus interface and to the sensor interface. The invention further relates to a method for the connection of a sensor to a fieldbus via a connection module.
Owner:SICK AG
Automotive hydraulic vane pump motor and switching control hydraulic system thereof
InactiveCN103423152AAvoid Volumetric Efficiency LossQuick responseRotary piston pumpsRotary piston liquid enginesFuel tankHydraulic seal
The invention relates to an automotive hydraulic vane pump motor and a switching control hydraulic system thereof. The pump motor comprises a rear pump cover, an oil-in distribution disc, a stator, a rotor, an oil-out distribution disc, a front pump cover, a shaft, a vane, an oil inlet and an oil outlet, wherein a static pressure oil chamber is formed in one side wall of a vane slot in the rotor and is communicated with an external hydraulic source through a signal oil passage; the static pressure oil chamber takes the shape of a groove and has openings which directly face the body of the vane when the vane extends to the maximal position and the minimal position; a vane root oil chamber, which is used for supplying hydraulic pressure to actuate the vane to extend out, is arranged at the root of the vane; an external switching control hydraulic system is used for supplying hydraulic oil to the vane root oil chamber; the switching control hydraulic system comprises an accumulator, a three-position electromagnetic directional valve and a reversing valve; one oil port in an output end of the reversing valve is communicated with the static pressure oil chamber, and the other oil port is connected with the vane root oil chamber; the oil port in an input end of the reversing valve is connected with signal oil, and a non-return valve is arranged on the accessed oil passage; oil ports in the output end of the three-position electromagnetic directional valve are respectively connected with the oil inlet and the oil outlet, and oil ports in the input end of the three-position electromagnetic directional valve are respectively connected with an oil tank and the accumulator.
Owner:胡阳
Uninterruptible direct current power supply method and device
ActiveCN102570592AEasy and reliable switchingSimple switch controlEmergency power supply arrangementsOxide semiconductorElectrical battery
The invention relates to an uninterruptible direct current power supply method and an uninterruptible direct current power supply device. The rectification output of two groups of secondary output coils of a transformer is respectively taken as a main direct current power supply line and a battery power supply line, a battery end is connected to a source of a P-channel metal oxide semiconductor (MOS) field effect transistor, and a drain of the P-channel MOS field effect transistor is connected to an input end of a direct current secondary voltage-stabilizing line. When a grid normally works, the main direct current power supply line converts a received alternating current voltage into a direct current voltage and transmits the direct current voltage to the direct current secondary voltage-stabilizing line, the battery power supply line converts the received alternating current voltage into the direct current voltage, a battery is charged, and the P-channel MOS field effect transistor is in a turn-off state. When the grid fails, the P-channel MOS field effect transistor is in a turn-on state, the direct current voltage which is output by the battery end is transmitted to the direct current secondary voltage-stabilizing line through the P-channel MOS field effect transistor. According to the embodiment of the invention, the main direct current power supply line and the battery power supply line are switched simply and reliably, and instant power-failure or dip of a direct current output voltage is avoided.
Owner:BEIJING GENERAL RES INST OF MINING & METALLURGY
Tunnel lighting device, system and method utilizing sunlight
ActiveCN112728491AHigh damage rateEasy maintenanceMechanical apparatusLighting heating/cooling arrangementsIlluminanceLight guide
The invention discloses a tunnel lighting device, system and method using sunlight. The device comprising a light guide, wherein the light guide is connected to a diffuser mounted in a tunnel through an optical fiber, the light guide is also internally provided with a first illumination sensor and a lamp, the first illumination sensor is used for collecting illumination intensity in the light guide, and the lamp is used for detecting the illumination intensity in the light guide; the lamp is used for adjusting the illumination intensity in the light guide device. When illumination intensity in the light guide device is insufficient, illumination intensity is compensated by utilizing the illumination intensity of the lamp, and compensated illumination intensity is conducted to the diffuser through the optical fiber, so the light beams received in the diffuser are preliminarily mixed in the light guide device; and furthermore, the light emitted by the diffuser has no obvious brightness difference, chromatic aberration or color temperature change, illumination compensation is smoother, and a purpose of stepless dimming is achieved.
Owner:四川纵横交安科技有限公司
Redundancy equalization lithium battery management circuit and method of genetic algorithm combined with K-means clustering
ActiveCN113206307ALow costBalance switching timesCharge equalisation circuitCharacter and pattern recognitionAlgorithmGenetics algorithms
The invention relates to a redundancy equalization lithium battery management circuit and method based on a K-means clustering genetic algorithm. The circuit comprises a single-chip microcomputer unit, and a switch driving unit, an AD sampling unit, a passive equalization driving unit and a Hall sensor which are connected with the single-chip microcomputer unit, and also comprises a battery pack module. The single-chip microcomputer unit collects data according to the AD sampling unit and the Hall sensor, controls corresponding switches through the switch driving unit and the passive equalization driving unit, and further controls all the lithium battery units and all the single lithium batteries in the battery pack module to participate in power supply of the whole redundant equalization lithium battery management circuit or not. The circuit has applicability, can solve the problem that the electric quantity of the discrete battery pack is inconsistent, and reduces the energy difference among the single batteries in the battery pack, thereby improving the consistency of the battery pack.
Owner:FUJIAN UNIV OF TECH
Method for multibank memory scheduling
InactiveUS20050050259A1Cheap and less complex solutionSimple switch controlMemory adressing/allocation/relocationDigital storageOperating systemRecording media
The present invention relates to a method for scheduling and controlling access to a multibank memory having at least two banks, and to an apparatus for reading from and / or writing to recording media using such method. According to the invention, the method comprises the steps of: writing an input stream to the first bank; switching the writing of the input stream to the second bank when a read command for the first bank is received; and switching the writing of the input stream back to the first bank when a read command for the second bank is received.
Owner:THOMSON LICENSING SA
Memory management apparatus in a multi-channel signal processor
InactiveUS6457113B1Simple switch controlSimple structureResource allocationMemory adressing/allocation/relocationMemory addressAddress generation unit
A multi-channel signal processing apparatus comprises a memory unit, a signal processing unit for single-channel implementing predetermined signal processing using a memory region of the memory unit according to a signal processing program for single-channel, an address generation unit generating a first memory address for single-channel processing, a pointer adding unit adding a pointer value indicating the head of an unused memory region of the memory unit to the first memory address generated by the address generation unit each time the signal processing in the signal processing unit is completed to generate a second memory address, and an address selecting unit selecting either the first memory address or the second memory address as a real address for the memory unit, thereby enabling multi-channel signal processing having a high processing efficiency without adding a large modification to the signal processing program for single-channel.
Owner:FUJITSU LTD
Method for controlling access to a multibank memory
InactiveUS7613866B2Cheap and less complex solutionSimple switch controlMemory adressing/allocation/relocationDigital storageOperating systemRecording media
Owner:THOMSON LICENSING SA
Battery series circuit and parallel circuit rapid switching device and switching method
A battery series circuit and parallel circuit rapid switching device comprises a power source, a plurality of battery fixing connection pieces, a switching switch, a plurality of contactors and a plurality of relays, wherein each battery fixing connection piece is provided with a series positive electrode, a series negative electrode, a parallel positive electrode and a parallel negative electrode; each contactor is provided with two normally open contacts which can be opened and closed and a coil; each relay is provided with two normally open contacts which can be opened and closed and a coil; the part between every two battery fixing connection pieces is provided with one contactor, wherein one contact of the contactor is connected with the series positive electrode of one battery fixingconnection piece, and the other contact of the contactor is connected with the series negative electrode of the other battery fixing connection piece; the coils of the contactors are connected with aseries gear and the power source in series to form a closed loop circuit; and each battery fixing connection piece is further provided with one relay, one contact of the relay is connected with the parallel positive electrode of the battery fixing connection piece, and the other contact of the relay is connected with the parallel negative electrode of the battery fixing connection piece; and thecoils of the relays are connected with a parallel gear and the power source in parallel to form a closed loop circuit.
Owner:UNIV OF SHANGHAI FOR SCI & TECH
Inverter device
ActiveUS20140226385A1Simple switch controlSimple processEfficient power electronics conversionDc-dc conversionPower inverterEngineering
A switching power supply device equipped with an inverter device includes a transformer including a primary winding and a secondary winding, which are magnetically coupled with each other. On the primary side, a capacitor and a switching element are connected in series with the primary winding and a switching element is connected in series the switching element and is connected in parallel with the primary winding and the capacitor. On the secondary side, a bidirectional switching element, which includes FETs, is connected in series with the secondary winding. A control circuit alternately turns the first switching element and the second switching element on, and turns the bidirectional switching element on in an off period of the first switching element or the second switching element. Thus, the inverter device outputs an alternating current output voltage by using a single secondary winding of a transformer.
Owner:MURATA MFG CO LTD
Dehydration device of natural gas, switching control method and system
The application provides a natural gas dehydration device, switching control method and system. The method includes: when entering the first working mode, control the third and fifth valves to open, control the fourth and sixth valves to close, and control the second and eighth valves Open, control the first and seventh valves to close, control the heater in the regeneration equipment to start; when the first working mode is switched to the second working mode, keep the current state of the eight valves unchanged, and control the heater to close; in the second When the working mode is switched to the third working mode, control the fourth and sixth valves to open, control the third and fifth valves to close, control the first and seventh valves to open, control the second and eighth valves to close, and control the heater to start; When the third working mode is switched to the fourth working mode, the states of the eight valves are kept unchanged, and the heater is controlled to be turned off. The application reduces the cost of equipment installation and maintenance, the switching control logic of the valve is simple, and the operability and safety of the dehydration device are improved.
Owner:重庆耐德能源装备集成有限公司
A fluid cell type mattress and control method thereof
InactiveCN107224141AReduce in quantitySimple switch controlFluid mattressesNursing bedsEngineeringSupport surface
The invention provides a fluid cell type mattress and a control method thereof. The fluid cell type mattress can realize a supporting surface which can accurately and better handle the distribution of a user's body pressure in a novel and simple structure. The fluid cell type mattress (10) is provided with a unit set (48) which is constituted by a plurality of units (30). The fluid chambers of the plurality of units (30) that constitute the unit set (48) are mutually communicated through an intra-set through channel (46), and the intra-set through channel (46) is provided thereon with first valves (50) which manage the on and off of the fluid chambers (32) of the plurality of units (30) which constitute the unit set (48). On the other hand, a plurality of unit sets (48) are provided, and an inter-set through channel (84) which connect the plurality of unit sets (48) is connected to respective first valve (50) of the plurality of unit sets, such that the through resistance of the intra-set through channel (46) is smaller than the through resistance of a drain side flow path (94) which is constituted by including the inter-set through channel.
Owner:SUMITOMO RIKO CO LTD
Camera-lens position regulating method and apparatus, and camera thereof
InactiveCN101520540ALow costSimple switch controlTelevision system detailsColor television detailsCamera lensEngineering
The invention relates to a camera-lens position regulating method and apparatus, and camera thereof. The camera comprises: a lens holding member, a motor providing revolution driving force in a predetermined direction, a geared ring, a cam, a potential applying element of which one end is connected with one of the geared ring and the cam and the other end is connected with a movable object, and a clutch for controlling joint and separation between the geared ring and the cam. According to the invention, using mono-directional driving force of the motor to control bi-directional movement of the driving device can realize at least one of focusing operation, film feeding operation, zooming operation, lens retracting operation and shuttering operation, with a cheap structure and without expensive driving source.
Owner:RICOH KK
Pressure stabilizing method of bag-type dust collector
ActiveCN111773840AStable gas volumeRelieve pressureDispersed particle filtrationThermodynamicsProcess engineering
The invention discloses a pressure stabilizing method of a bag-type dust collector, which comprises the following steps of: supplementing gas to the bag-type dust collector or a main pipeline connected with the front end of the bag-type dust collector before each pulse ash removal, and keeping the gas supplementing process for a period of time. According to the invention, supplementing gas is introduced; the gas quantity in the bag-type dust collector and the main pipeline is kept stable before pulse ash removal for a period of time and during pulse ash removal; thus, the situation that duringpulse ash removal, original gas is compressed instantaneously due to the fact that ash removal gas is increased instantaneously in the bag-type dust remover and the main pipeline is avoided, and pressure fluctuation, caused by instantaneous increase of the gas volume, of the front end can be greatly reduced. According to the invention, the pressure fluctuation in the bag-type dust collector can meet the requirements, the process negative pressure fluctuation range required by precision production such as vapor deposition is met, and a good effect is generated for improving the production quality of high-added-value products such as lasers and optical fiber preforms.
Owner:HAWK SHANGHAI ENVIRONMENTAL TECH
Two-phase interleaved capacitor clamping type ultrahigh-gain direct-current converter based on coupling inductance
ActiveCN109787475AHigh voltage gainTopological symmetryEfficient power electronics conversionDc-dc conversionCapacitanceLow voltage
The invention discloses a two-phase interleaved capacitor clamping type ultrahigh-gain direct-current converter based on coupling inductance. The two-phase interleaved capacitor clamping type ultrahigh-gain direct-current converter based on coupling inductance comprises a two-phase interleaved Boost structure, a first capacitor clamping circuit and a second capacitor clamping circuit, wherein thetwo-phase interleaved Boost structure comprises an input source, a first coupling inductance primary winding, a second coupling inductance primary winding, a first switch tube and a second switch tube; the first capacitor clamping circuit comprises a first capacitor, a third capacitor, a first diode, a second diode and a second coupling inductance secondary winding, wherein the second capacitor clamping circuit comprises a second capacitor, a fourth capacitor, a third diode, a fourth diode and a first coupling inductance secondary winding. The ultrahigh-gain direct-current converter in the embodiment of the invention has the advantages of being symmetrical in topological structure, simple in switch control, ultra high in voltage gain and ultra low in switch tube voltage stress, and is verysuitable for a low voltage input and high voltage output application occasion, in which a low-voltage high-current gallium nitride device is used.
Owner:BEIJING JIAOTONG UNIV
Confining pressure cavity hydraulic oil recovery device
InactiveCN106402097ASimple processing technologyEasy to operateFluid-pressure actuator componentsTriaxial shear testThick wall
The invention relates to a confining pressure cavity hydraulic oil recovery device which comprises an oil pressure cavity barrel, an oil pressure cavity base, a hydraulic oil recovering control valve, a hydraulic oil recovering pipe and a hydraulic oil recovering barrel; the oil pressure cavity barrel is a thick-wall cylinder with an opening in the lower end, and comprises an oil pressure cavity barrel inner wall and an oil pressure cavity barrel outer wall; the oil pressure cavity base comprises an upper cylinder body of the base and a lower cylinder body of the base, a hydraulic oil recovering hole is formed in the surface of the lower cylinder body of the base, and meanwhile a hydraulic oil recovering channel is formed in the base; and the hydraulic oil recovering barrel is communicated with the hydraulic oil recovering channel through the hydraulic oil recovering hole, a recovering control valve and the hydraulic oil recovering pipe. A complete recovering device is formed by the recovering channel, the recovering hole, the recovering control valve, the recovering pipe and the recovering barrel, and the confining pressure cavity hydraulic oil recovery device is suitable for liquid recovering and reusing, and is particularly suitable for indoor test liquid recovering. The confining pressure cavity hydraulic oil recovery device has a certain application prospect on tri-axial tests of on-site rock mass samples in the field of ground, tunnels, bridges, metros and the like.
Owner:HUBEI POLYTECHNIC INST
Refrigerating device
InactiveCN1281906CSimple structureReduced mode of operationCompression machines with non-reversible cycleCompression machines with several evaporatorsEngineeringHeat exchanger
Owner:DAIKIN IND LTD
Novel bathroom intermittent heating device
InactiveCN105115022APlay the role of heatingRaise the ratioIndirect heat exchangersCentral heating systemEngineeringIntermittent heating
The invention relates to novel bathroom intermittent heating devices and discloses a novel bathroom intermittent heating device which aims at solving the problems that by means of an existing bath heater, the temperature of a bathroom cannot be evenly distributed, energy is wasted and potential safety risks exist. The novel bathroom intermittent heating device comprises gravity type heat pipes, a U-shaped hot water tank, a water inlet pipe, a water returning pipe, a water heater, a shower hot water pipe, a shower nozzle, a hand valve and a pipeline pump. A groove is formed in a wall, a thermal-protective coating is arranged in the groove, and an insulating layer is arranged on the bottom face of the thermal-protective coating. The U-shaped hot water tank is arranged in the groove in parallel with the insulating layer in a horizontal U-shaped mode. An opening is formed in one side of the U-shaped hot water tank, and one side of the opening faces upwards. The lower ends of the gravity type heat pipes are inserted in the opening of the U-shaped hot water tank, and the inserting position is sealed. One pipe opening in the opening side of the U-shaped hot water tank is connected with the water heater, and the other pipe opening in the U-shaped hot water tank is connected with the water heater. The shower hot water pipe is arranged on the side face of the water heater, and the shower nozzle is arranged at the lower end of the shower hot water pipe. The novel bathroom intermittent heating device is used for bathroom heating and showering.
Owner:HARBIN INST OF TECH
Automobile balance device capable of preventing side tilt and forward tilt of automobile, and control method thereof
ActiveCN103600635BImprove comfortCompact structureInterconnection systemsResilient suspensionsSteering wheelWheel speed sensor
The invention discloses an automobile balance device capable of preventing side tilt and forward tilt of an automobile, and a control method thereof. The automobile balance device comprises a sensor module, an ECU (electronic control unit), and an airbag. The sensor module comprises a wheel speed sensor, a steering wheel sensor, and a brake sensor. The wheel speed sensor, the steering wheel sensor and the brake sensor are connected to the input end of the ECU respectively. The airbag is disposed between a wheel arm shaft and an automobile body. The airbag comprises a flexible main gas chamber connected with the automobile body and a rigid auxiliary gas chamber connected with the wheel arm shaft. The flexible main gas chamber and the rigid auxiliary gas chamber are connected or disconnected through an airbag electromagnetic valve. The automobile balance device and the control method thereof have the advantages that the automobile balance device is more accurate and faster, forward tilt and side tilt caused by sudden braking and cornering of the automobile can be eliminated better, and the automobile is more comfortable; the automobile balance device is compact in structure and never produces evident interfering motion; the airbag is adopted, and the automobile balance device is reasonable in price and easy to manufacture.
Owner:ANHUI POLYTECHNIC UNIV
Non-blocking expandable multistage photoswitch array and working method thereof
ActiveCN102740177BRealize the exchange functionEasy to controlMultiplex system selection arrangementsPhotoswitchWorking set
The invention belongs to the technical field of optical communication, and particularly relates to a non-blocking expandable multistage photoswitch array and a working method thereof. The multistage photoswitch array is provided with kN input terminals and kN output terminals, and comprises a packet network with kN input terminals and kN output terminals and a switching network consisting of k N*N non-blocking switching units A. The kN output terminals of the packet network are divided into k output groups. Any one input terminal selected can be connected to the output terminal of any one group of output groups. The N output terminals on each output group are connected with the N input terminals on the switching unit A orderly. The invention has the advantages that a novel network topological structure is put forward, wherein the structure combines the characteristic that mono-stage switching network is simple to control and the advantages of multistage switching network which is low in cost and complexity of hardware. A syncretic topological structure is put forward. The N*N structure is selectively expanded to the kN*kN structure agilely according to the current network traffic. The non-blocking expandable multistage photoswitch array provided by the invention is simple in swapping control and has strict non-blocking characteristics.
Owner:SHANGHAI HUIJUE NETWORK COMM EQUIP
Parallel rectification topological structure and LLC resonant circuit
PendingCN110233579AReduce in quantityAvoid power lossAc-dc conversion without reversalEfficient power electronics conversionTransformerComputer science
The invention discloses a parallel rectification topological structure and an LLC resonant circuit. The parallel rectification topological structure comprises a plurality of rectification circuits, wherein each rectification circuit comprises a transformer and a rectification bridge which are connected with each other, and the rectification bridges of the rectification circuits are connected in parallel; in addition, the two adjacent rectification bridges share one bridge arm; and the transformers of the respective rectification circuits work synchronously, and the rectification circuits are controlled to be connected in series to be output or connected in parallel to be output through switching to synchronous same-phase operation or synchronous reversed-phase operation. According to the parallel rectification topological structure, the rectification bridges of the rectification circuits are connected in parallel, so that two adjacent rectification bridges share one bridge arm, and therectification circuits are controlled to be connected in series to be output or connected in parallel to be output through switching to synchronous same-phase operation or synchronous reversed-phaseoperation of the transformers of the rectification circuits, so that the device cost and the power loss are reduced; and moreover, the switching control is simple, the charging process is not requiredto be interrupted, and the application range is wider.
Owner:BEIJING DYNAMIC POWER CO LTD
Vehicle hydraulic vane pump motor and its switching control hydraulic system
InactiveCN103423152BAvoid Volumetric Efficiency LossQuick responseRotary piston pumpsRotary piston liquid enginesEngineeringOil intake
The invention relates to an automotive hydraulic vane pump motor and a switching control hydraulic system thereof. The pump motor comprises a rear pump cover, an oil-in distribution disc, a stator, a rotor, an oil-out distribution disc, a front pump cover, a shaft, a vane, an oil inlet and an oil outlet, wherein a static pressure oil chamber is formed in one side wall of a vane slot in the rotor and is communicated with an external hydraulic source through a signal oil passage; the static pressure oil chamber takes the shape of a groove and has openings which directly face the body of the vane when the vane extends to the maximal position and the minimal position; a vane root oil chamber, which is used for supplying hydraulic pressure to actuate the vane to extend out, is arranged at the root of the vane; an external switching control hydraulic system is used for supplying hydraulic oil to the vane root oil chamber; the switching control hydraulic system comprises an accumulator, a three-position electromagnetic directional valve and a reversing valve; one oil port in an output end of the reversing valve is communicated with the static pressure oil chamber, and the other oil port is connected with the vane root oil chamber; the oil port in an input end of the reversing valve is connected with signal oil, and a non-return valve is arranged on the accessed oil passage; oil ports in the output end of the three-position electromagnetic directional valve are respectively connected with the oil inlet and the oil outlet, and oil ports in the input end of the three-position electromagnetic directional valve are respectively connected with an oil tank and the accumulator.
Owner:胡阳
Switch discriminating touchless lightswitch
InactiveUS10091860B2Reduce exposureSimple switch controlInput/output for user-computer interactionElectrical apparatusSwitch boxHuman–computer interaction
Control of one or more switches arrayed in a multi-gang switch box is disclosed. One or more sensors may receive or provide an indication of a gesture near one of the switches. An indication of the switch determined to which a gesture is determined to be directed toward may be displayed. A state change may be performed on the switch according to the gesture.
Owner:GOOGLE LLC
A Control System for Variable Cursor on TT&C Radar
InactiveCN107153176BReduce in quantityPrecise positioningWave based measurement systemsRadarControl system
The invention relates to a control system for variable cursors of a measurement and control radar device. The control system comprises a control portion and a structure target holder, according to relative position data of the cursors of the measurement and control radar device, reference of two of reference position data is carried out, a guide rail member is fixed on a guide rail reference member, a cursor guide rail member is locked on the guide rail member, the guide rail reference member and the guide rail member are fixed through utilizing a supporting member, after all the cursors are mounted, the integrated guide rail reference member is led through a safety groove through utilizing a rope onto a structure in the prior art, the guide rail reference member is lastly inserted into a fixing hoop, and mounting of the whole device is accomplished. Branch controllers are distributed around the fixing hoop, cable connection is accomplished, through a host computer, cursor control can be conveniently realized according to a combination control protocol. The system is advantaged in that mounting, adjustment and control are convenient, the cursor position can be accurately positioned, combination control on the cursors can be realized, and quite great application values are realized.
Owner:PLA NO 63686 CORPS
A battery series-parallel circuit fast switching device and switching method
Owner:UNIV OF SHANGHAI FOR SCI & TECH
A tunnel lighting device, system and method using sunlight
ActiveCN112728491BHigh damage rateEasy maintenanceMechanical apparatusLighting heating/cooling arrangementsSolar lightFirst light
A tunnel lighting device, system and method using sunlight, the device includes a light guide, the light guide is connected with a diffuser installed in the tunnel through an optical fiber, and a first An illumination sensor and a lamp, the first illumination sensor is used to collect the light intensity in the light guide, and the light is used to adjust the light intensity in the light guide. In the present invention, when the light intensity in the light guide is insufficient, the illuminance of the lamp is used to compensate the light intensity, and the compensated light intensity is transmitted to the diffuser through the optical fiber, so that the light beam received in the diffuser is in the light guide. The light beam that has been preliminarily mixed in the diffuser, and the light emitted by the diffuser has no obvious brightness difference, color difference or color temperature change, and the compensation of light is smoother, achieving the purpose of stepless dimming.
Owner:四川纵横交安科技有限公司
Camera-lens position regulating method and apparatus, and camera thereof
InactiveCN101520540BLow costSimple switch controlTelevision system detailsColor television detailsCamera lensEngineering
The invention relates to a camera-lens position regulating method and apparatus, and camera thereof. The camera comprises: a lens holding member, a motor providing revolution driving force in a predetThe invention relates to a camera-lens position regulating method and apparatus, and camera thereof. The camera comprises: a lens holding member, a motor providing revolution driving force in a predetermined direction, a geared ring, a cam, a potential applying element of which one end is connected with one of the geared ring and the cam and the other end is connected with a movable object, and aermined direction, a geared ring, a cam, a potential applying element of which one end is connected with one of the geared ring and the cam and the other end is connected with a movable object, and aclutch for controlling joint and separation between the geared ring and the cam. According to the invention, using mono-directional driving force of the motor to control bi-directional movement of theclutch for controlling joint and separation between the geared ring and the cam. According to the invention, using mono-directional driving force of the motor to control bi-directional movement of thedriving device can realize at least one of focusing operation, film feeding operation, zooming operation, lens retracting operation and shuttering operation, with a cheap structure and without expens driving device can realize at least one of focusing operation, film feeding operation, zooming operation, lens retracting operation and shuttering operation, with a cheap structure and without expensive driving source.ive driving source.
Owner:RICOH KK
Redundant balanced lithium battery management circuit and method based on genetic algorithm combined with k-means clustering
ActiveCN113206307BLow costBalance switching timesCharge equalisation circuitCharacter and pattern recognitionAlgorithmGenetics algorithms
Owner:FUJIAN UNIV OF TECH
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Patsnap Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com