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745results about How to "Conducive to miniaturization design" patented technology
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Off-set output 3-dof spherical surface parallel mechanism articulated with center spherical surface
InactiveCN101306534AImprove mechanical propertiesIncrease exerciseProgramme-controlled manipulatorAngle alphaMechanical property
The invention discloses a bias output three freedom spherical parallel mechanism with a central spherical hinge, which consists of a three freedom spherical parallel mechanism, the central spherical hinge and a bias output link unit, and is characterized in that the lower end of a lower support bar (3) of the central spherical hinge is fixed to a fixed platform (1); the axis of the lower support bar (3) passes through the central point of the fixed platform (1); a cylindrical straight output link (8) passes through the center of a moving platform (7), is fixed to the moving platform or connected with the moving platform through a prismatic pair; the upper end of the straight output link (8) is fixedly connected with a bias output link (9) at the point of intersection (A) of central lines; the axial included angle alpha h of the cylindrical straight output link (8) and the bias output link (9) ranges from 0 DEG to100 DEG; and the bias direction is random. The bias output three freedom spherical parallel mechanism has the advantages of high restriction, high rigidity, large working space, unloading function and greatly improved mechanical property of mechanism.
Owner:YANSHAN UNIV
Male connector, female connector, connector assembly and communication equipment
ActiveCN110808499AEasy to processHigh mechanical strengthCoupling device detailsNetwork connectorsAnatomyElectrical connection
The present application provides a male connector, a female connector, a connector assembly and a communication equipment. The male connector comprises a male conductive base, wherein a plurality of first through holes are arranged on the male conductive base; a plurality of shielding sleeves which are fixed on the male conductive base and electrically connected with the male conductive base, theshielding sleeves have a sleeve structure, a front-back through shielding cavity is formed in the shielding sleeves, a plurality of the shielding sleeves are corresponding to a plurality of first through holes in a one-to-one way and the shielding cavity is communicated with the corresponding first through holes; and a plurality of male differential pairs, wherein a plurality of male differentialpairs are corresponding to a plurality of shielding sleeves in a one-to-one way, the male differential pairs are fixed in the shielding cavity by penetrating through the first through holes and the male differential pairs are electrically insulated from the male conductive base and the shielding sleeves. Compared with the connectors in the prior art, the connector has the advantages of convenientprocessing, high mechanical strength and good shielding effect.
Owner:HUAWEI MACHINERY
Catalyst for preparing methane by low-temperature oxidization of methane and preparation method and application thereof
InactiveCN101875016AReduce energy consumptionMiniaturizationPreparation by oxidation reactionsMolecular sieve catalystsMolecular sieveCopper oxide
The invention discloses a catalyst for preparing methane by low-temperature oxidization of methane and a preparation method and application thereof. The catalyst consists of a molecular sieve carrier and an active ingredient supported on the carrier; and the active ingredient comprises copper oxide or copper oxide and noble metal compound active ingredient, wherein the mass ratio of the molecular sieve to the copper in the copper oxide to the noble metal is 100:1-5:0-1. The molecular sieve serves as the carrier, and the preparation method for the catalyst comprises the following steps of: mixing a precursor copper acetate of the basic active ingredient or / and a metal precursor of the noble metal active ingredient in a certain ratio to prepare solution; and soaking the molecular sieve in the solution to allow the metals of the active ingredient to be supported on the carrier, and washing, drying and baking to prepare the catalyst. The catalyst can catalyze the methane oxidation at low temperature to prepare the methanol; a catalytic reaction system is simple; and the yield and selectivity of the target product methanol are high.
Owner:CHINA NAT OFFSHORE OIL CORP +1
Direct drive type exciter and screen sounding device
ActiveCN108616797ASimple structureFew partsElectrical transducersLoudspeakersEngineeringSounds device
The invention discloses a direct drive type exciter and a screen sounding device. The exciter comprises a magnetic circuit system and a vibration system. The magnetic circuit system connected with thedevice is used for forming a magnetic gap. The vibration system consists of a coil, an elastic support member and a connecting member; the elastic support member includes an outer connecting portion,an inner connecting portion and an elastic portion arranged between the outer connecting portion and the inner connecting portion; a coil and a connecting element are fixed on the two surface of theinner connecting portion respectively; one end, far away from the inner connecting portion, of the coil is inserted into the magnetic gap; one end, far away from the inner connecting portion, of the connecting element is configured to connect a screen; and the outer connecting portion is fixed at a side magnetic circuit part.
Owner:GOERTEK INC
Pan-tilt and operation method thereof, control method, mobile device using same
A pan-tilt 100 comprsies a driving mechanism 40 comprising a rotor assembly 43, an installing member 432 used for bearing an external load, a driving member arranged on the installing member 431; a stator rotatably abutting against the driving member 433 and comprising a spherical surface 411 contacted with the driving member 433, wherein the driving member 433 can drive the installing member 431 to rotate relative to the stator 41; and a first sensor 62 arranged on the rotor assembly 43 used for deteting the motion state of the rotor assembly 43, wherein a detection result of the first sensor 62 can be used to adjust the motion of the rotor assembly 43.
Owner:SZ DJI TECH CO LTD
Projection module and manufacturing method therefor and depth camera
PendingCN107229173AMiniaturizationGuaranteed performanceProjectorsCamera body detailsForeign matterMiniaturization
Embodiments of the invention relate to the photoelectric technical field, and provide a projection module and a depth camera. The projection module comprises a base, a light source, a lens supported by an internal bracket, and a pattern generator supported by an external bracket for generating structural optical patterns, wherein the internal bracket and the external bracket are independent non-integrated structures; the internal bracket and the external bracket are mounted on the base; the projection module adopts the internal bracket to support the lens, and adopts the external bracket to bear the pattern generator; the internal bracket and the external bracket are independent structures, so that installation of the lens and the pattern generator can be performed separately without causing mutual constraint; when the internal bracket equipped with the lens and the external bracket equipped with the pattern generator are mounted on the base, the relative positions of the light source, the lens and the pattern generator can be adjusted in a relative easy manner, the installation precision can be controlled easily, the installation efficiency is high and the miniaturization of the depth camera can be facilitated; and in addition, falling off of foreign matters, such as dust and chippings and the like, in the installation process can be avoided, and the lens performance can be ensured.
Owner:SHENZHEN ORBBEC CO LTD
Wearable device
ActiveCN109782447AConducive to miniaturization designReduce volumeOptical elementsFlexible circuitsMechanical engineering
Owner:HUAWEI TECH CO LTD
Intelligent watch antenna and intelligent watch structure with external antenna
InactiveCN106207381AExquisite structureGuaranteed textureAntenna supports/mountingsRadio-controlled time-piecesElectrical and Electronics engineering
The invention relates to the field of intelligent watches and discloses an intelligent watch antenna and an intelligent watch structure with an external antenna. A watch frame is changed into the watch antenna, the receiving face of the antenna can be externally arranged, in this way, the shielding influences of a metal watch shell and other components can be greatly reduced, the receiving effect can be improved, the situation that the antenna occupies the internal space of a watch can be avoided, and an internal movement and the whole watch can be miniaturized. In addition, material limit is not produced on the metal watch shell or the other components, the texture of the intelligent watch can be guaranteed, the intelligent watch has the advantages that the cost is low, and the overall structure is attractive and descent, and the intelligent watch can be conveniently applied and popularized in reality.
Owner:CHENGDUSCEON ELECTRONICS
One-key type multifunctional control circuit and wearable electronic product
ActiveCN103809492ASimple structureEasy to operate and controlProgramme controlComputer controlKey pressingCapacitance
The invention discloses a one-key type multifunctional control circuit and a wearable electronic product. The wearable electronic product comprises a power supply, a keying circuit, a power supply control circuit, a reset circuit and a processor; the keying circuit is provided with a key, the power supply control circuit opens or closes a power supply loop of the processor according to the open / close state of the key; the reset circuit is provided with a first switch element and a capacitance charge-discharge circuit, the capacitance charge-discharge circuit controls the on and off of the first switch element according to the open / close state of the key so as to generate a control signal to control the power supply control circuit to close the power supply loop of the processor or keep the current state. The one-key type multifunctional control circuit is capable of controlling the on, off and reset through one key. By means of an NFC circuit and a power supply charging circuit, the electronic product does not only have NFC function and charging function but also has NFC awakening function and charging booting function, and the electronic product starting mode diversity and agility are improved.
Owner:QINGDAO GOERTEK
Ultra-wideband radar pulse transmitter and method
ActiveCN102121983ACompact structureEasy to miniaturize designWave based measurement systemsPhysicsVIT signals
The invention discloses an ultra-wideband radar pulse transmitter and method, relating to a pulse signal generating technology. The pulse transmitter comprises a microwave audion, an SRD (Step Recovery Diode) and a Scotty diode. A signal with a rapider edge is formed by utilizing switching characteristic of the microwave audion through the charging and discharging process of a capacitor so that the SRD is changed from a switch-on state to a switch-off state, and an ultra-wideband Gaussian narrow pulse is generated. By changing the power supply voltage and the charging and discharging capacitance, the width and the amplitude of the Gaussian pulse can be adjusted. The pulse transmitter provided by the invention comprises a subnanosecond pulse circuit, a nanosecond pulse circuit, a single-period pulse circuit or a bipolar pair pulse circuit, and the generated pulse signal has good waveform quality and can meet the application needs of different pulse radar transmitter systems.
Owner:INST OF ELECTRONICS CHINESE ACAD OF SCI
Ultra-wideband low-profile circularly-polarized two-arm spiral antenna
InactiveCN105870605ALow return lossHigh gainRadiating elements structural formsAntennas earthing switches associationUltra-widebandDielectric substrate
The invention belongs to the technical field of antennas, provides an ultra-wideband low-profile circularly-polarized two-arm spiral antenna, and aims at solving the contradiction of consideration of ultra-wideband, low profile, circular polarization and high gain development of an existing spiral antenna. The spiral antenna comprises a back cavity, a radiator dielectric substrate, an antenna spiral arm, a balun and a coaxial joint, wherein a feeding port is formed in the center of the radiator dielectric substrate; the antenna spiral arm is located on the upper surface of the radiator dielectric substrate and is connected with the upper end of the balun through the feeding port; the balun is located in the back cavity; the lower end of the balun is connected with the coaxial joint; the back cavity comprises a cylinder and a slope; the cylinder is arranged at the center of the back cavity; the slope is connected with the cylinder; the cylinder and the slope jointly form a circular truncated cone; an annular groove and a window are formed in the cylinder; and the window is used for arranging the balun. By the spiral antenna provided by the invention, the performance requirements of the wide band, low profile, circular polarization and high gain of the spiral antenna are well considered; and meanwhile, the frequency band bandwidth of the antenna is greatly improved.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Giant magnetostictive longitudinal-torsional coupled vibration ultrasonic transducer
ActiveCN103203312ASimple structureCompact structureMechanical vibrations separationUltrasonic sensorTransducer
The invention discloses a giant magnetostictive longitudinal-torsional coupled vibration ultrasonic transducer which comprises a transducer main body, a coil support and a shell, wherein the shell comprises a top plate, a base plate as well as a plurality of giant magnetostictive bar installation pipes, a plurality of giant magnetostictive bars, a first magnetic conduction sheet, a second magnetic conduction sheet, an upper cover plate, a lower cover plate, a fastening element, a magnetic element and a coil; the plurality of giant magnetostictive bar installation pipes are arranged between the top plate and the base plate; the plurality of giant magnetostictive bars are respectively installed in the giant magnetostictive bar installation pipes; the coil is reeled on the coil support; the coil and the fastening element are coaxial; and an ultrasonic frequency alternating current is introduced into the coil so as to generate an alternating magnetic field to drive the giant magnetostictive bars to generate longitudinal-torsional coupled vibration. According to the giant magnetostictive longitudinal-torsional coupled vibration ultrasonic transducer provided by the embodiment of the invention, parts are reduced; and the structure of the transducer is simplified, so that the structure of the transducer is compact, and the ultrasonic energy can be transmitted efficiently.
Owner:深圳市青鼎装备有限公司
Phased array beam tracking method
ActiveCN104297747ARealize beam tracking functionSimple designRadio wave reradiation/reflectionClassical mechanicsMiniaturization
The invention discloses a phased array beam tracking method. The method includes the steps that an annular syntype phased array traverses all wave potentials on an azimuth by controlling beams on the azimuth, and a wave potential of the azimuth where a tracking target is located is determined; the wave potential on the azimuth is controlled to point to the wave potential where the tracking target is located, and the wave potential serves as a center wave potential of tracking loop scanning; the center wave potential serves as the center of the annular syntype phased array, tracking loop scanning is carried out on three wave potentials in adjacent airspaces of the tracking target, and target echo energy is recorded; the annular syntype phased array compares the magnitudes of the target echo energy of the three wave potentials in the adjacent airspace of the tracking target, and the wave potential where the target echo energy is largest is determined to be a center wave potential of next tracking circulating scanning. The direction of the target is determined according to the magnitudes of the target echo energy, the phased array achieves a beam tracking function on the azimuth, complexity of phased array design is effectively reduced, design space is reduced and miniaturization design of the phased array is facilitated.
Owner:SHANGHAI RADIO EQUIP RES INST
Millimeter wave active antenna unit and inter-PCB (Printed Circuit Board) interconnection structure
PendingCN110167261AHighly integratedConducive to miniaturization designSimultaneous aerial operationsHigh frequency circuit adaptationsSignal processing circuitsMiniaturization
The invention relates to a millimeter wave active antenna unit and an inter-PCB (Printed Circuit Board) interconnection structure. The inter-PCB interconnection structure comprises a main board and anAIP (Antenna in package) antenna module. The main board is a first multilayer PCB and provided with a signal transmission line and a first pad electrically connected with the signal transmission line. The AIP antenna module is a second multilayer PCB and provided with a second pad, an impedance matching transmission branch, an impedance line and a signal processing circuit. The main board and theAIP antenna module adopts a mode of direct welding interconnection between the multilayer PCBs, thereby saving an expensive millimeter wave interconnection assembly on the one hand, and thus being very low in cost; On the other hand, the mode of direct welding between the boards improves the reliability of the product, the interconnection design between the multilayer PCBs can be realized, and the integration between the multilayer PCBs is greatly improved, thereby being conducive to the miniaturization design of millimeter wave equipment. In addition, the second pad and the signal processingcircuit are provided with the impedance matching transformation branch and the impedance line therebetween, thereby being suitable for a wider frequency range and a wider lamination number range.
Owner:COMBA TELECOM SYST CHINA LTD
System and method for receiving ultra wide band pulsed radar
ActiveCN102147460AImprove sampling efficiencyConducive to miniaturization designWave based measurement systemsMicrocontrollerCapacitance
The invention discloses a system for receiving an ultra wide band pulsed radar, which is composed of an ultra wide band receiver and a control unit, wherein the ultra wide band receiver takes a sampling phase detector (SPD) as the key component of a receiver sampling gate; a microwave triode is used for generating sampling pulses by combining with a capacitance charging and discharging process; and the sampling bandwidth is 6GHz; and the control unit takes a PIC (peripheral interface controller) singlechip as a core and provides a sampling clock signal for the receiver by combining with a programmable time delay chip. In the system for receiving the ultra wide band non-carrier frequency pulsed radar, the waveform of an ultra wide band signal from an antenna can be accurately reconstructed so as to collect signals by low-speed A / D and lower system cost.
Owner:INST OF ELECTRONICS CHINESE ACAD OF SCI
SVPWM (Space Vector Pulse Width Modulation) control method for Z-source inverter
InactiveCN102969921AReduce switching timesSmall rippleDc-ac conversion without reversalZ-source inverterEngineering
The invention relates to an SVPWM (Space Vector Pulse Width Modulation) control method for a Z-source inverter, belongs to the technical field of inverter control and solves the problem of generation of a larger inductive current ripple caused by the existing SVPWM control method for the Z-source inverter. The states of three switching tubes of an upper bridge arm are represented by eight vectors, and the eight vectors divide a control interval into six sectors. For taking the third (III) sector as an example, the vectors taking actions in Ts in each SVPWM period are allocated sequentially from left to right as 111, 110, 100, 000, 000, 100, 110 and 111, wherein the total acting time of a traditional zero vector is set as T0; the total acting time of a direct-through zero vector is set as t0 which is greater than 0 and less than or equal to T0; and the total acting time t0 of the direct-through zero vector is divided into four sections inserted between the acting times of the traditional zero vector and an adjacent effective vector, thereby realizing SVPWM control of the Z-source inverter. The SVPWM control method is suitable for the SVPWM control of the Z-source inverter.
Owner:HARBIN INST OF TECH
Electronic equipment control method and system comprising touch terminal
InactiveCN102902476AConducive to miniaturization designSimple structureSelective content distributionInput/output processes for data processingControl electronicsHuman–computer interaction
The invention discloses an electronic equipment control method and a system comprising a touch terminal. The method is characterized in that through wireless communication of the touch terminal and electronic equipment, horizontal switching of a display interface of the electronic equipment is controlled by horizontal sliding on the touch region of the touch terminal, and vertical switching of the display interface of the electronic equipment is controlled by vertical sliding on the touch region of the touch terminal. The method and the system have the following beneficial effects: horizontal switching and vertical switching of the display interface are achieved by utilizing horizontal sliding touch and vertical sliding touch of the touch terminal, so that the user feels more convenient and time-saving and trouble-saving when using the touch terminal; turn-on adjustment of the volume is achieved through sliding touch for moving two points upward, and turn-down adjustment of the volume is achieved through sliding touch for moving the points downward; and narrowing of the display interface is achieved through sliding touch for ensuring the two points to draw close inward, and amplification of the display interface is achieved through sliding touch for separating the two points outward, thus further perfecting the use functions of the touch terminal.
Owner:SHENZHEN RAPOO TECH
Camera lens with regulating mechanism
InactiveCN100368846CReduce the numberReduce procurement costsTelevision system detailsColor television detailsAxial displacementCamera lens
The invention discloses an adjustable camera lens of close-perspective recording in the mobile phone and digital camera, which comprises the following parts: holders, close-perspective recording loop connecting among holders, close-perspective recording mirror room and resilient resisted in the mirror room, wherein the close-perspective recording loop connects rotatable holder, which rotates holder to generate axial displacement correspondingly along the displacement orbit which is setting between the loop and orbit. The camera reaches a common close-perspective recording effect by adjusting the distance from axial displacement to lens focuses.
Owner:东莞信泰光学有限公司
Miniature holder type mobile phone
InactiveCN109547600AImprove shot qualityEasy maintenanceTelevision system detailsColor television detailsDepth of fieldEngineering
The invention discloses a miniature holder type mobile phone. The miniature holder mobile phone comprises an intelligent mobile phone, a miniature holder and a lens module. The miniature holder is provided with three or more stages of rocker arms, which comprise driving arms and moving arms. The moving arm of the previous stage of the rocker arm is the driving arm of the next stage of the rocker arm; and the intelligent mobile phone is set as the driving arm of the first stage of the rocker arm. When the number of lens groups is set to be two or more, a binocular vision system is formed, and an active rotation offset motion of the miniature holder can be controlled through a program to obtain depth-of-field information and three-dimensional information of an object so as to simulate humanvision for establishing stereoscopic vision. By implementing the technical scheme of the miniature holder, a technical scheme for achieving a full-screen mobile phone is obtained incidentally.
Owner:罗轶
Electronic device with fingerprint identification function
InactiveCN106991394AHighly integratedLow production costUnauthorised/fraudulent call preventionPrint image acquisitionFinger touchFingerprint
The present invention discloses an electronic device with a fingerprint identification function. The electronic device comprises a camera module comprising a camera and a transparent cover plate located at one side of a camera light inlet, wherein the transparent cover plate comprises a transparent substrate and a transparent electrode located on the surface of the transparent substrate; an induction chip electrically connected with the transparent electrode and used for obtaining the fingerprint texture information of a finger touching the transparent cover plate via the transparent electrode; a processor electrically connected with a fingerprint detection chip and used for controlling the electronic device to execute the preset functions according to the fingerprint texture information. According to the electronic device of the technical scheme of the present invention, the transparent electrode is arranged on the surface of the transparent substrate of the transparent cover plate of the camera module, and the fingerprint texture information of the finger is obtained by the transparent electrode, so that the integration degree is improved, the slotting on a display panel and a fingerprint identification module are not needed, the manufacturing cost is reduced, and the miniaturization design of the electronic device is convenient.
Owner:LENOVO (BEIJING) CO LTD
Mobile terminal broadband antenna with adjustable capacitors for impedance matching
ActiveCN104377444AWorking bandwidthEasy to adjustSimultaneous aerial operationsRadiating elements structural formsCapacitanceTerminal equipment
The invention provides a mobile terminal broadband antenna with adjustable capacitors for impedance matching. The whole antenna is formed by an antenna matching circuit composed of the adjustable capacitors and an antenna body arranged on a support in a covering mode. The antenna body is an IFA antenna and is suitable for mobile terminal devices which become smaller and smaller, the first end of the first adjustable capacitor is connected with the antenna body, the second end of the first adjustable capacitor is connected with an external device, the second adjustable capacitor is connected with the first end of the first adjustable capacitor, and the other end of the second adjustable capacitor is grounded. Through the antenna matching circuit of the basic structure, the working frequency band of the antenna can be conveniently adjusted so that impedance matching between the antenna body and the external device can be achieved, and the working bandwidth of the antenna can be effectively broadened. The antenna is simple in structure, easy to manufacture, suitable for being applied in a severe environment and small in size, and does not occupy too much space, and the minimization design of a mobile terminal provided with the antenna is facilitated.
Owner:SHANGHAI AMPHENOL AIRWAVE COMM ELECTRONICS CO LTD
Camera lens with regulating mechanism
InactiveCN1734305AReduce the numberReduce procurement costsTelevision system detailsColor television detailsAxial displacementCamera lens
The invention discloses an adjustable camera lens of close-perspective recording in the mobile phone and digital camera, which comprises the following parts: holders, close-perspective recording loop connecting among holders, close-perspective recording mirror room and resilient resisted in the mirror room, wherein the close-perspective recording loop connects rotatable holder, which rotates holder to generate axial displacement correspondingly along the displacement orbit which is setting between the loop and orbit. The camera reaches a common close-perspective recording effect by adjusting the distance from axial displacement to lens focuses.
Owner:东莞信泰光学有限公司
Multi-parameter sensor and measurement system based on photonic crystal fiber
InactiveCN101871791AHigh measurement accuracyHigh precisionCladded optical fibreOptical waveguide light guideEngineeringMeasurement precision
The invention discloses a multi-parameter sensor based on a photonic crystal fiber. An input end and an output end of the sensor are respectively provided with an input coupler and an output coupler, an annular photonic crystal fiber cavity is formed in the way that a section of hollow photonic crystal fiber is connected between the two couplers, and the section of hollow photonic crystal fiber is used as a sensing head of the multi-parameter sensor. The invention also discloses a multi-parameter measurement system which comprises a signal acquiring, processing and displaying module and the multi-parameter sensor, the sensor is respectively connected with a light source and a photoelectric detector through the input coupler and the output coupler thereof, and the photoelectric detector is connected to the signal acquiring, processing and displaying module. The invention additionally provides a pressure measurement system comprising the multi-parameter measurement system and a pressurizing device arranged on the sensing head, and the pressuring device comprises a plenum chamber, a photonic crystal fiber clamp, a connector and the like. The multi-parameter sensor and measurement system of the invention has the advantages of simple and convenient operation, simplified structure, high measurement precision, easy miniaturization and standardization design and the like.
Owner:NAT UNIV OF DEFENSE TECH
Spectrum splicing optical frequency domain reflection-type distributed fiber sensor and signal demodulation method
ActiveCN109186644AReduced requirement for non-mode-hopping spectral rangeLow cost designConverting sensor output opticallyPhotovoltaic detectorsMiniaturization
The present invention discloses a spectrum splicing optical frequency domain reflection-type distributed fiber sensor and a signal demodulation method. The spectrum splicing optical frequency domain reflection-type distributed fiber sensor comprises a narrow linewidth scanning laser, a first optical fiber coupler, an optical circulator, a sensing optical fiber, a polarization control unit, a second optical fiber coupler, a first polarization beam splitter, a second polarization beam splitter, a first balance photoelectric detector, a second balance photoelectric detector, a third optical fibercoupler, a first Faraday rotation reflector, a second Faraday rotation reflector, a reference fiber optic interferometer, a photoelectric detector and a signal collection processing unit. Through spectrum splicing, it is avoided that a laser with a broadband spectrum range and without mode jump is employed to reduce the cost; the laser package and control are simplified to facilitate miniaturization design; and the requirements for the environment temperature and the vibration condition are reduced to facilitate project promotion application.
Owner:BEIJING INST OF AEROSPACE CONTROL DEVICES
Containment passive pressure suppression system
InactiveCN107293335AAlleviate the boost effectLower the altitudeNuclear energy generationShieldingNuclear engineeringNuclear power
The invention discloses a containment passive pressure suppression system. A pressure suppression pool of the system comprises a water space and an air space, wherein the water space is arranged around a reactor pit and communicates with a containment drywell; cooling water is contained in the water space; the initial water level in the water space is higher than a reactor core in the reactor pit; the air space is arranged around the water space and communicates with the water space. The water space and the air space are in transverse arrangement, so that the height of the pressure suppression pool is reduced, so that the space volume of the pressure suppression pool occupied by the containment is reduced; the dimension of the containment can be further reduced; meanwhile, the duplex isolation function can be realized; the realization of the radiation shielding function is facilitated, so that the containment can use the single layer structure; the structure is simpler; the small-size design of the containment of a marine nuclear power station is facilitated. In addition, the air isolation is realized between the water space and the air space; the air-water isolation can also be ensured in the swinging environment.
Owner:CHINA NUCLEAR POWER TECH RES INST CO LTD +2
Hidden bracket
ActiveCN103633576ASmall footprintSmall space requirementSwitchgear with withdrawable carriageEngineeringChassis
Owner:STATE GRID CORP OF CHINA +2
Dielectric waveguide coupling structure and multi-stage dielectric waveguide filter
The invention relates to the field of radio-frequency filter devices, and discloses a novel dielectric waveguide coupling structure and a multi-stage dielectric waveguide filter. For the dielectric waveguide coupling structure formed in a splicing mode, no milling tool is needed for machining, the coupling bridge length / coupling amount of the dielectric waveguide coupling structure are not limited by the size of the milling tool any more, the coupling quantity between two dielectric waveguide monomers can be adjusted by adjusting the thickness of a metal shield layer arranged on a connecting surface and / or the plane shape of a metal shield layer missing hole and / or the like, and the purpose of precise coupling is achieved. Meanwhile, no milling tool is needed for machining, the coupling bridge length / coupling amount of the dielectric waveguide coupling structure can be not limited by the size of the milling tool any more. In addition, the dielectric waveguide coupling structure can be formed only through technologies such as the regional back silver technology and the edge welding technology, the machining process is greatly simplified, the machining difficulty is lowered, production is convenient, and the cost is lowered.
Owner:SICHUAN TAOGUANG COMM
Antenna and wireless signal transmit-receive system
InactiveCN104577355AUniform radiationSatisfy the directional requirementsDifferential interacting antenna combinationsFrequency bandPhysics
The embodiment of the invention discloses an antenna which comprises two antenna arrays. Each antenna array comprises two microstrip antenna units, the feed magnitudes of every two microstrip antenna units are equal, the feed phase difference between the every two microstrip antenna units is 180 degrees, the work frequencies of every two microstrip antenna units are the same, and the distance between the centers of every two microstrip antenna units ranges from 0.5 wave length to 1 wave length of the center frequency of a work frequency band of any one microstrip antenna unit. The included angle between the two antenna arrays ranges from 30 to 150 degrees in the same plane, and the distance between the middle point of the distance between the centers of the two microstrip antenna units of the first antenna array and the middle point of the distance between the centers of the two microstrip antenna units of the second antenna array is smaller than or equal to 3 wave lengths of the center frequency of the work frequency band of the microstrip antenna unit with the shortest wave length. The embodiment of the invention further discloses a wireless signal transmit-receive system. By means of the antenna and the wireless signal transmit-receive system, the uniformity of antenna radiation signals can be improved, and the blind area of radiation coverage is reduced.
Owner:XIAN RUIXIN TECH CO LTD
Laser projection equipment
ActiveCN103747221AReduce volumeConducive to miniaturization designProjectorsPicture reproducers using projection devicesLaser lightColored light
The invention provides laser projection equipment. The laser projection equipment comprises a light combination module and a light splitting module, wherein the light combination module comprises a first laser light source group, a quarter-wave plate, a first spectroscope and a reflector; the first laser light source group comprises a first laser light source and a second laser light source, which are oppositely arranged and are used for respectively transmitting first polarized light and second polarized light with the same polarization; the first spectroscope is inclined to the quarter-wave plate for reflecting the second polarized light to penetrate the quarter-wave plate and reflecting the first polarized light; the reflector is parallel to the quarter-wave plate and is adjacent to the first laser light source group for reflecting the second polarized light to the quarter-wave plate so as to cause the second polarized light to penetrate through the first spectroscope and to be combined with the first polarized light to form laser beam after penetrating through the quarter-wave plate. The light splitting module is used for receiving the laser beam so as to split the laser beam into a plurality of imaging colored light.
Owner:QISDA OPTRONICS (SUZHOU) CO LTD +1
Low earth orbit satellite data transmission system
ActiveCN106850034AEasy to miniaturize designEnables high-gain spot beam transmissionNetwork topologiesRadio transmissionSatellite dataNatural satellite
The invention discloses a low earth orbit satellite data transmission system, comprising a low earth orbit satellite transceiving end and a ground user terminal. The ground user terminal sends position information to the low earth orbit satellite transceiving end. A sending antenna of the low earth orbit satellite transceiving end points to the ground user terminal and sends service data.
Owner:SHANGHAI ENG CENT FOR MICROSATELLITES
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