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132 results about "Maser" patented technology
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A maser (/ˈmeɪzər/, an acronym for microwave amplification by stimulated emission of radiation) is a device that produces coherent electromagnetic waves through amplification by stimulated emission. The first maser was built by Charles H. Townes, James P. Gordon, and Herbert J. Zeiger at Columbia University in 1953. Townes, Nikolay Basov and Alexander Prokhorov were awarded the 1964 Nobel Prize in Physics for theoretical work leading to the maser. Masers are used as the timekeeping device in atomic clocks, and as extremely low-noise microwave amplifiers in radio telescopes and deep space spacecraft communication ground stations.
Linux-based Ethercat maser/slave station control system and method
ActiveCN103425106AChange communication problemImprove performanceTotal factory controlProgramme total factory controlMaserDigital interface
The invention discloses a linux-based Ethercat maser / slave station control system and method. The system comprises an Ethercat maser station system and an Ethercat slave station system, the Ethercat maser station system finishes computing tasks such as task control and motion control and builds an abstract logic circuit by the aid of a hardware abstract layer, the hardware abstract layer is connected with an Ethercat maser station module, data are encoded into an Ethercat message by the Ethercat master station module according to an Ethercat communication protocol, and the Ethercat message is transmitted to the slave station system by an Ethernet port. A position / speed instruction value is transmitted to a digital interface / analog interface by the aid of real-time high-speed communication between the Ethercat maser / slave stations, the digital interface / analog interface receives a pulse instruction value fed back, the pulse instruction value is transmitted to the master station by the Ethercat slave station system, and the Ethercat master station module obtains the feedback position / speed instruction value and feeds back the position / speed instruction value to a motion controller, so that full-closed loop / semi-closed loop control is finished. The system has the advantage that a motion control system is flexible in networking and wiring, high in communication speed and reliability and low in cost.
Owner:SOUTH CHINA UNIV OF TECH
Diamond maser and microwave amplifier
Masers and microwave amplifiers that can function in the continuous-wave mode at room temperature are provided. The maser system can include a diamond gain medium having nitrogen-vacancy centers, and a resonator can be disposed around the gain medium. The resonator can be disposed in a cavity box, and radiation (e.g., visible light) can be provided to the gain medium to cause emission of microwave radiation.
Owner:THE CHINESE UNIVERSITY OF HONG KONG
Full-automatic wafer dicing saw control system based on vision
ActiveCN103111753AImprove efficiencyFunction increaseLaser beam welding apparatusAutomatic controlMaser
The invention relates to a full-automatic wafer dicing saw control system based on vision. The full-automatic wafer dicing saw control system based on the vision is matched with a tool device, an optical maser and a micro-camera. Hardware comprises a computer, a motion control card and a displayer, wherein the control card, the displayer, the optical maser and the micro-camera are respectively connected with the computer, motors are respectively connected with the control card through each shaft motion platform and an actuator corresponding to a rotating device, grating sensors are respectively arranged on the motion platform of an axle X and an axle Y and a direct drive motor, and the grating sensors are connected with the computer through an encoder. The computer adopts the Windows system to carry out the modular design based on the VC++. The computer comprises a data processing module, a motion control module, a control system initialization module, a visual inspection locating module, a display interface module and a laser cutting control module. By the technical scheme, the stable operation of the software matching with the hardware of the whole control system is achieved, the control system organically integrates the tool device, the degree of the automatic control is high, and the scribing efficiency is improved by 20% or so compared with the original scribing system.
Owner:福建省威诺数控有限公司
Measuring device and method for measuring average particulate size and concentration of atmospheric particulates
InactiveCN103728229AFunctionalShort response timeParticle size analysisParticle suspension analysisMaserOptical pathlength
The invention discloses an atmospheric environmental-friendly optical detecting instrument, and particularly discloses measurement of the average particulate size of atmospheric inhalable particulates and detection of particulate concentration. A multi-wavelength output optical maser sends out laser with certain wavelength under the drive of a DSP (Digital Signal Processing) control module; the laser passes through a single mode fiber, is coupled by an optical fiber coupler, enters a multi-optical path sample cell through an incidence hole, interacts with gas to be measured, mainly has scattering and absorbing effects with the gas to be measured, is reflected for several times in the sample cell, and then is ejected out of the sample cell through the incidence hole; the scattered and absorbed gas enters a photoelectric detector through a laser signal ejected out of the sample cell through the incidence hole, and is converted into a weak electrical signal; the electrical signal is conditioned by a signal conditioning circuit and is input into an A / D conversion module of a high-speed DSP controller; the average particulate size and concentration are calculated under the control of a calculation procedure, and are displayed on an LCD (Liquid Crystal Display) module; in addition, the electrical signal can also be transmitted to a remote monitoring device through a wireless communication module.
Owner:TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Method for measuring fluorescence lifetime of probe molecule based on pressure-sensitive coating
The invention relates to a method for measuring fluorescence lifetime of a probe molecule based on a pressure-sensitive coating. An adopted system comprises a pulse excitation light source, a collection camera, a synchronous controller, a computer, a concave lens and a filter. The method comprises the following steps of enabling a pulse light source to excite the coating, quickly exposing twice by the collection camera, and collecting fluorescence light intensity information. The method has the advantages that data is processed by a secondary comparison method, so that the error caused by matching of an experiment image and a reference image of a target with deformation is reduced; a PIV (particle image velocimetry) green optical maser is used for exciting, so that the exposure time is greatly shortened by a high-energy pulse light source, and the movement fuzzy defect is weakened; the system can be applied to the PSP / TSP (personal software process / team software process) measuring experiment of a rotary part.
Owner:AVIC SHENYANG AERODYNAMICS RES INST
Global navigation satellite system receiver and position measurement method
ActiveCN102540200AReduce volumeSame latitude and longitude coordinatesSatellite radio beaconingLaser rangingMaser
The invention discloses a global navigation satellite system (GNSS) receiver and a position measurement method. The GNSS receiver comprises a satellite receiving antenna, a laser ranging instrument, a posture sensor and a maser control board, wherein the posture sensor is used for receiving an azimuth angle, a pitch angle and a roll angle of the satellite receiving antenna. The maser control board is used for obtaining a longitude and latitude coordinate and an elevation coordinate of the phase center of the satellite receiving antenna, transforming the longitude and latitude coordinate and the elevation coordinate into a right-angle coordinate under a local coordinate system SG, obtaining coordinate offset of a measured point and the phase center according to the distance, the azimuth angle, the pitch angle and the roll angle between the satellite receiving antenna and the measured point, and calculating the right-angle coordinate of the measured point under local coordinate system SG. Compared with the prior art, the GNSS receiver improves accuracy of measurement, eliminates a centering rod simultaneously, and reduces the volume. In addition, during measurement, the longitude and latitude coordinate of the satellite receiving antenna has no need to be guaranteed to be identical with a longitude and latitude coordinate of the measured point, thereby reducing operation difficulties.
Owner:HERONAV BEIJING TECH DEV
Coherent maser radiation cold atomic clock
InactiveCN101145025AReduce FWHMExtended transit timeApparatus using atomic clocksPulse automatic controlMaserHelmholtz coil
The present invention discloses a coherent microwave-radiation cold atomic clock; and an ion pump is connected with a vacuum catheter which is connected with a microwave cavity; a light window is fixed in the microwave cavity by quartz glass and three reflective mirrors; a pair of anti-Helmholtz coils and a pair of Helmholtz coils are fixed on the microwave cavity; a pair of rectangular coils are fixed on the microwave cavity; a magnetic shielding system is connected with a vacuum system; semiconductor laser provides captive light and beams of pump-back light; a semiconductor laser on the vertical cavity surface provides a plurality of beams of captive light; a voltage-controlled crystal oscillator is connected with a frequency synthesizers connected with a signal receiver and processor; the semiconductor laser on the vertical cavity surface is connected with the microwave cavity; a photoelectric detector and a microwave-power receiver are connected with the signal receiver and processor connected with the voltage-controlled crystal oscillator as well as the semiconductor laser on the vertical cavity surface. The present invention is characterized in that the structure is compact and the size is small, and has good stability, high accuracy as well as good applicability.
Owner:WUHAN INST OF PHYSICS & MATHEMATICS CHINESE ACADEMY OF SCI
Master-slave parallel control method for energy storage converters of photovoltaic/battery micro grid system
InactiveCN107346896AEasy to expandExpansion plug and playSingle network parallel feeding arrangementsEnergy storageMaserPower Balance
Provided is a master-slave parallel control method for energy storage converters of a photovoltaic / battery micro grid system. When the grid works normally, the maser energy storage converter and the slave energy storage converters of the photovoltaic / battery micro grid system both work in a grid-connected mode, and a three-stage charging strategy including constant-current charging, constant-voltage charging and floating charging is implemented according to the battery state of the energy storage systems. When the grid fails, the master energy storage system is switched to an off-grid mode to establish a voltage and a frequency for the bus of the photovoltaic / battery micro grid system, and the slave energy storage systems continue to work in a grid-connected mode. An energy management system adjusts the output power of the energy storage converters in the slave energy storage systems in real time according to the load power, the state of the master energy storage system and the power of a photovoltaic power generation system, in order to maintain the power balance in the micro grid system. In order to meet the power allocation requirement of each energy storage system in the photovoltaic / battery micro grid system, the energy management system issues power dispatching instructions to the slave energy storage converters according to the battery state, the generation power of the photovoltaic system and the load power.
Owner:北京科诺伟业科技股份有限公司
Relativistic backward wave oscillator for generating linearly polarized TE11 mode directly
ActiveCN105280462AEnhanced interactionImprove beam conversion efficiencyTransit-tube cathodesTransit-tube circuit elementsWave structureMaser
The invention, which belongs to the maser field, directly relates to a relativistic backward wave oscillator for generating a linearly polarized TE11 mode directly. The relativistic backward wave oscillator comprises an arc cathode, a reflector, an angular partition slow wave structure, an output waveguide and a magnetic field coil. The arc cathode is arranged at the front end of the relativistic backward wave oscillator; the reflector, the angular partition slow wave structure, and the output waveguide are arranged at the rear side of the arc cathode successively; and the magnetic field coil is installed at the periphery. According to the invention, with the nonaxisymmetrical arc cathode and the angular partition slow wave structure, the TE11 mode is excited directly. The reflector employs the dual-premodulation-cavity unit preferably and is used for carrying out premodulation on an arc relativistic electron beam and leaking the part of TE11 mode to enter the arc cathode zone, so that certain premodulation of the electron beam at the arc cathode zone is realized and thus the beam wave conversion efficiency is improved. Moreover, the oscillator has advantages of simple structure and high conversion efficiency; and the linearly polarized TE11 mode can be generated directly.
Owner:NORTHWEST INST OF NUCLEAR TECH
System for measuring high temperature moire interference deformation
InactiveCN101349549APrevent swelling from crackingDifficult to adjustUsing optical meansGratingMaser
A high temperature moire interference deformation measuring system belongs to the technical field of optical measurement mechanics, engineering material, component deformation and displacement testing. The invention is formed by an optical maser, a light splitting coupler, a high temperature furnace, a six-dimension adjustable bracket and a moire interference optical path system. The measuring system can realize the high precision timing measuring for u and v displacement fields under the high temperature condition, and uses the green light illumination to avoid the hot radiation red light from affecting the measurement, and realizes the automatic measurement of a displacement field inside a surface through an optical switch, and solves the observing window design of the high temperature furnace through a cross form split double-layer silica glass, and simultaneously uses a lens with 600 lights / mm optical grating, long focus and great diameter as a field lens, thereby increasing the measuring object distance, reducing the affect of high temperature to the measuring system, and increasing the fringe resolution factor. The problem that tested element in the high temperature furnace is difficult to regulate is solved through the six-dimension adjustable bracket and the regulation of the moire interference optical path system. The system has convenient usage and high measuring sensitivity.
Owner:TSINGHUA UNIV
GaN thin film upgrowth method based on Al3O2 substrate
InactiveCN101140867AReduce tensile stressIncrease critical thicknessLaser detailsFinal product manufactureMaserGas phase
The invention discloses a growing direction for GaN thin film based on Al2O3 underlay, which aims to solve the problem of generating excessive heat stress during the growing of AIN layer inserted under low temperature in prior art. The growing process of the Gan thin film is that: put the underlay of Al2O3 in the MOCVD reaction chamber where the chemical vapor deposition of metallorganics occurs; inflate the hydrogen or mixed gas of hydrogen and alkaline air to the reaction chamber and make heat treatment to the underlay chip; grow the GaN orAIN nucleating layer on the heat-processed underlay; grown the GaN top layer on the AIN interposed layer. The technological conditions of AIN interposed layer growing under high temperature is: 20 to 760 Torr in growing pressure, 900 to 1,100 degrees centrigrade in temperature, 120 mu mol / min in flow rate of aluminium resources and 1000 to 5000 sccm in flow rate of alkaline air. The GaN epitaxial layer grown by the method provided in the invention is applicable to making micro wave high power transistor based on GaN, LED and optical maser.
Owner:XIDIAN UNIV
Various methods for industrial scale production of graphene and new devices/instruments to achieve the latter
InactiveUS20110314840A1Low costEasy to disassembleMaterial nanotechnologyPretreated surfacesMaserCarbonization
This invention is comprised of the following innovations: various devices / instruments which may be used in the preparation of a compact monolayer [made up of a suitable organic material (or organic compound)] as well as the carbonization of the latter; efficient methods for preparing a compact monolayer which is free from all “other” materials that were used in the various processes involved in the said preparation of the said compact monolayer; various methods for carbonizing a compact monolayer by means of a suitable “heat source” (which allows the application of a sudden searing “heat” extremely quickly) in order to produce a graphene layer, where the said heat source may be a “hot surface” or a suitable “radiation type beam” such as a suitable laser beam, or a suitable maser beam, or a suitable electron beam; and finally, various methods to provide a protective layer for a graphene layer.
Owner:JAHANGIRI FAMENINI HAMID REZA
Transmit/receive beamforming signal generation
ActiveUS9960883B1Increase effective powerMinimum signal loadingModulation transferenceError preventionMulti bandLocal oscillator signal
Transmit and / or receive beamforming signal generation includes a voltage-controlled oscillator (VCO) for generating a lower or higher master frequency output signal in accordance with a selection of a lower or higher frequency carrier frequency. A local oscillator generates local oscillator signals in quadrature in response to the maser frequency output signal. One or more mixer stages generate sidebands in response to a received information signal and the local oscillator signals in quadrature. The one or more mixer stages generate an output information signal in response to high-side injection of lower sidebands of the developed sidebands when the lower frequency carrier frequency is selected, and generate the output information signal in response to low-side injection of higher sidebands of the developed sidebands when the higher frequency carrier frequency is selected. Multi-band operation of transmit and receive arrays can be performed.
Owner:TEXAS INSTR INC
Phonon maser
InactiveUS20080020935A1Inexpensive and quick and safeReduce sending costsExcitation process/apparatusSolid masersMaserSingle crystal
A phonon maser is comprised of a resonant cavity, a superconductive gain medium, and pumping means. The resonant cavity is comprised of highly reflective means and partially reflective means. The superconductive gain medium is an elongated superconductor, which may be a crystalline high-temperature ceramic superconductor or a single-crystal superconductor. The pumping means provide electromagnetic energy for the superconductive gain medium in order to form and then excite Cooper pairs. Trapped in the resonant cavity and amplified by the population inversion, the resonating bundles of superposed free phonons eventually break through the partially reflective means and enter the vacuum of space in a collimated, coherent, and all-penetrating beam of bundles of superposed guest phonons. This beam changes properties of the ambient space, including its gravitational energy.
Owner:VOLFSON BORIS
Biological total internal reflection type near-field scan microscope
InactiveCN1587979AEffective spatial resolutionHigh strengthChemiluminescene/bioluminescenceSurface/boundary effectMaserFluorescence
A biology inside total reflection near field scanning microscope is consisted of four parts. The first is excitation part comprising laser maser, collimation and reflector of optical system, the second is wave creation part comprising inverse trapezoidal prism and sample to be tested on its top surface, the third is collection, storage and disposal of information comprising optical fiber probe, driving scanning part and second photoelectric probe head and computer, and the fourth is fiber probe height controller comprising optical information colleting part and first photoelectric probe head, and the fourth one has the property of having a fluorescent dye macromolecule or enzyme or quantum point sticking to needle tip or near that of the fiber probe. Being a optical total reflection near field scanning microscope used in testing biological cell microstructure and single element, the invention can also uncover the discipline, which can create the most effective spatial resolution.
Owner:SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
Parallel single cell performance monitoring system and monitoring method
The invention discloses a parallel single cell performance monitoring system and monitoring method. The system comprises a master control module, a voltage acquisition module, a current acquisition module and a current sensor. The maser control module is respectively connected with the voltage acquisition module and the current acquisition module through a CAN bus; the voltage signal joint of the voltage acquisition module is respectively connected with the anode and the cathode of a cell, and the temperature signal joint of the voltage acquisition module is connected with a temperature sensor; the current signal joint of the voltage acquisition module is connected with the current sensor; the master control module is used for receiving, storing and uploading single cell performance parameters transmitted by the current acquisition module and the voltage acquisition module; and the master control module detects insulation resistance of a battery pack and determines whether a fault occurs in a line by use of the relation between the voltage sum of each serially connected single cell and the total voltage of the battery pack. The system provided by the invention can realize measurement of performance parameters of any one single cell in the battery pack and is high in precision.
Owner:JIANGSU UNIV
Full-solid millimeter wave cloud radar calibration probe system and method
InactiveCN104459649AImprove detection powerRealize low-altitude filling blindnessRadio wave reradiation/reflectionICT adaptationMaserControl signal
The invention relates to a full-solid millimeter wave cloud radar calibration probe system and method. The full-solid millimeter wave cloud radar calibration probe system comprises a control module generating control signals, a signal generation module, a millimeter wave receiving module, a full-solid emitter, an antenna feeder sub-system, a signal processing sub-system and a master control module, wherein the signal generation module generates one test signal and two emitting excitation signals according to the control signals within the same period in a set time sequence, the millimeter wave receiving module carries out amplification and down-conversion processing on received test signals and target probe echo signals, the full-solid emitter generates probe signals according to the two emitting excitation signals, the antenna feeder sub-system is used for radiating the probe signals to the space and the target probe echo signals, the signal processing sub-system is used for processing the test signals and the target probe echo signals, and the maser control module is used for displaying and recording a received signal processing result. The full-solid millimeter wave cloud radar calibration probe system generates the test signals and emitting probe excitation signals within the same period and realizes real-time on-line calibration of a receiver. Two emitting excitation pulses work alternatively, the power of radar probe is improved, and meanwhile low-altitude blind area coverage is realized.
Owner:BEIJING INST OF RADIO MEASUREMENT
Apparatus for measuring acceleration by double optical beams, optical fibers and light traps
Owner:ZHEJIANG UNIV
Micro phase delay measuring device for optical element based on laser feedback
The invention relates to a micro phase delay measuring device for an optical element based on laser feedback, belonging to the technical field of laser measurement. The measuring device is characterized in that a double refraction laser feedback system comprising a 632.8nm He-Ne optical maser, an outer reflector and a quarter-wave plate is used to measure the phase delay of the optical element. The optical element to be measured is placed in a laser cavity, and the polarization state of the laser jumps in two orthogonal directions when the outer reflector moves left and right along the laser axis. With the polarization jump, the frequencies of the two eigenstates of the laser mode are different, and the frequency difference thereof is related to the size of phase delay of the laser cavity.The measurement of micro phase delay of the optical element can be realized by the principle. The measuring method of the micro phase delay of the optical element based on laser feedback and an implementation device thereof have the advantages of simple structure, easy assembly and adjustment, high measuring accuracy and low cost.
Owner:TSINGHUA UNIV
Light-spot tracking device of atomic force microscope
InactiveCN1587981AReal-time observationReasonable structureSurface/boundary effectInstrumental componentsFour quadrantsAtomic force microscopy
A light spot tracker device is used for tracker device microscope needle point scanning, comprising which consists of laser maser, reflector on the direction of travel of parallel light beams shot by laser maser and it has adjusting device. Focusing lens and microbracket needle point installed is along the direction of travel direction of reflected light of reflector, center of the focusing lens and top of back of the microbracket needle point are on the optical axis of light G and top of the microbracket needle point is on focus of focusing lens. Imaging lens and two-dimensional adjustable four-quadrant photoelectric sensor are on traveling direction reflected light H of microbracket needle point. Unit scanning devices is formed by a XY direction scanner and Z direction scanner fixed on it, and component modularization. The invention has the advantages of simple structure, convenient adjustment and replacement to each component, reliable tracking laser focus light.
Owner:SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI +1
Improved double-energy CT imaging method and apparatus
InactiveCN105759319ALow costInnovative designMaterial analysis using wave/particle radiationNuclear radiation detectionHigh energyMaser
The invention relates to an improved double-energy CT imaging method and apparatus, and belongs to the field of CT imaging. The apparatus scans a scanning object, the left half portion of a single-layer detector acquires low-energy projection data, the right half portion of the single-layer detector acquires high-energy projection data, according to a conjugation projection principle, equivalent low-energy projection data of the right half portion is obtained through the low-energy projection data of the left half portion of the single-layer detector, the equivalent high-energy projection data of the left half portion is obtained through the high-energy projection data of the right half portion of the single-layer detector, and then data processing and image reconstruction are carried out. The apparatus comprises a radiation source, a radiation source controller, a rotation mechanism, a motion controller, the single-layer detector, a metal filter, a data acquisition controller and a maser control computer. The left half portion of the single-layer detector comprises a low-energy detection element, and the right half portion comprises a high-energy detection element. The method and apparatus provided by the invention decrease the detector cost by nearly 50%.
Owner:THE FIRST RES INST OF MIN OF PUBLIC SECURITY +1
Maser assembly
A maser assembly includes a pump light source; a maser material including molecules that are excited through the absorption of light (1) from the pump light source, and which subsequently transfer via intersystem crossing (9) into the sublevels of their triplet ground states, so causing a population inversion between two sublevels (16,18); an electromagnetic structure in which the masing material is disposed, and which supports a microwave mode that is both resonant in frequency with and magnetically coupled to the transition between these two sublevels; and where energy is supplied to the microwave mode through stimulated emission (25) across the transition at such a rate as to exceed the mode's electromagnetic losses, the microwave mode being a maser mode. The assembly includes provisions for effecting substantially continuous maser activity during operation of the assembly. The laser crystal may be a (perdeuterated) pentacene in p-terphenyl which is held at room temperature without an additional magnetic field and the dye molecules in the single crystal may be pumped by blue LED with a frequency conversion to the yellow and green with the help of a Ce:YAG fluorescent pump light concentrator.
Owner:NPL MANAGEMENT +1
Relativistic backward wave oscillator of direct circular polarization TE11 mode
The invention belongs to the field of masers and relates to a relativistic backward wave oscillator of a direct circular polarization TE11 mode. The relativistic backward wave oscillator comprises an annular cathode, angular partition double-pre-modulation chambers, angular partition slow wave structures, an output waveguide and a magnetic field coil. The annular cathode is at the most front end of the structure and emits an annular relativistic electron beam under the effect of high voltage pulse. The angular partition double-pre-modulation chambers, the angular partition slow wave structures, and the output waveguide are orderly arranged behind the annular cathode. The magnetic field coil is at the periphery of the annular cathode, the angular partition double-pre-modulation chambers, and the angular partition slow wave structures. The angular partition double-pre-modulation chambers and the slow wave structures are employed by the invention, two linearly polarized TE11 modes with the same frequency, similar amplitude and orthogonal polarization can be generated in two groups of structure. Through the offset of d / 4 of two groups of the double-pre-modulation chambers and the slow wave structures in an axial position, thus a 90-degree phase difference is introduced between the linearly polarized TE11 modes with orthogonal polarization, and the circular polarization TE11 mode is obtained in an output waveguide.
Owner:NORTHWEST INST OF NUCLEAR TECH
Method and device for detecting nanostructured staying quality poison material
The invention discloses a detection method and a device for persistance toxic substance in a nanometer structure, laser is coupled into optical fiber by an optical maser which is as excitation light source of the toxic substance, and then the optical master enters into the first circulator, the laser is exported from the first circulator and is shone down nano-substrate adhered to the toxic substance, a frequency excursion Raman signal relative to frequency of the laser light source is returned to the first circulator because of that Raman scattering effect is strengthened in the surface and Raman signal light is generated, then signal light which is arrived to the second circulator and pass through a tunable fiber Bragg grating is returned into the second circulator, and is exported into a light detector from a detecting interface, light intensity of the signal light is measured by the light detector, then the toxic substance which is to be detected is decerned. In the invention, the tunable fiber Bragg grating is adjusted, if the light signal is detected by the light detector, then the frequency of the light signal is obtained by adjusting the state of an adjustment device of the tunable fiber Bragg grating, therefore, the toxic substance which is to be detected can be detected. The invention has advantages of high detection accuracy and easy operation.
Owner:ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
Method and device for parallel transmission of optical fiber energy and optical fiber data
InactiveCN103199927AAvoid interferenceImprove anti-interference abilityFibre transmissionTransceiverMaser
The invention provides a method and a device for parallel transmission of optical fiber energy and optical fiber data. High-energy lasers transmitted by a power optical maser at a host machine end and lasers transmitted by an optical fiber data transceiver and subjected to data modulation are coupled to energy optical fibers through an optical fiber interface, optical energy and data are transmitted to a slave machine end by the energy optical fibers, high-energy laser spots output by the optical fiber interface are diffused to be parallel light by a diverging lens at the slave machine end, the parallel light irradiates on a photocell to generate electric energy, generated electric energy is stored in a storage battery to be used by a low power consumption electrical appliance, meanwhile the data transceiver receives laser modulation signals transmitted by the energy optical fibers, and thus the parallel transmission of the energy and the data is completed. The method and the device for the parallel transmission of the optical fiber energy and the optical fiber data has the advantages of being good in anti-interference performance, small in size and strong in explosion-proof performance, and can be widely applied to the oil and gas field environment or the industry environment which are low in energy consumption, small in data transmission quantity and high in explosion-proof requirement.
Owner:SOUTHWEST PETROLEUM UNIV
Zoned split joint multiple He-Ne laser digital speckle interference measuring system
The invention discloses a sectionalization concatenation multi-He-Ne laser maser digital speckle interference measuring system, comprising digital image processing control survey part which consists of computer, image acquisition card CCD camera, D / A conversion card and optical path part of laser light beam splitter, completely reflecting mirror, extending lens, optical phase shifting, referenced extending lens, imaging shot and semipermeable-semireflecting cubic mirror, whose characters are that several low power He-Ne laser maser with light switch on optical path of each one, different laser maser are used for illumination 8 different parts which are close to each other and have a little polymerization of substances tested in different times by controlling the light switch phase displacement measuring can be realized by using each low power He-Ne laser maser to illuminate separately, combining the measuring results by image concatenation algorithm to get complete information to be measured of large size object.The invention has increased measuring surface square by times and contrast of fringe obtained is high.
Owner:XI AN JIAOTONG UNIV
Optical element surface defect detecting system based on active laser beam scanning
ActiveCN102507596AFlexible combinationSolve environmental adaptability problemsOptically investigating flaws/contaminationMaserLight beam
The invention discloses an optical element surface defect detecting system based on active laser beam scanning. In the detecting system, relative movement is not performed between a to-be-monitored optical element and an optical maser, a guide lens, and a photoelectric probe; point-by-point scanning for the surface of the optical element can be realized only through the two-dimensional rotation of the guide lens; the position of the focal point of a laser beam can be changed in real time during scanning, so that the focal point can always fall on the surface of the optical element. The system can realize on-line monitoring of the optical element in a highlight irradiation environment, a high-vacuum environment and a confined space in a high-power solid laser device. The system disclosed by the invention has simple structure and wide application range, and is flexible to use.
Owner:LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
Speed-modulated relativistic backward wave tube which operates in a locally inhomogeneous magnetic field
ActiveCN109243943AIncrease kinetic energyHigh Output Microwave PowerKlystronsWave structureMicrowave
Owner:NORTHWEST INST OF NUCLEAR TECH
Preparation method for zirconium-based amorphous alloy
The invention provides a preparation method for a zirconium-based amorphous alloy. The preparation method comprises the following steps that 1 one end of a basis material is fixedly connected to the side wall of a reactor, the other end of the basis material is rotatably hung in the reactor, and a cooling medium is pumped into the reactor; 2 zirconium-based mixed fine powders are sent to the upper surface of the basis material through a powder-sending control device at a constant speed, and the fine powders are located under a laser processing head of an optical maser; 3 the optical maser is started, the laser processing head is connected with a gas protecting device, laser is ejected from the laser processing head, the laser is pointed on the upper surface of the basis material point-by point, the optical maser is closed at interval, and amorphous points are formed; 4 the basis material is rotated at a constant speed, so that the solidified amorphous points can be immersed into the cooling medium to conduct the post cooling treatment; the step is repeated, and the zirconium-based amorphous alloy is formed on the upper surface of the basis material. The preparation method for the zirconium-based amorphous alloy has the advantages that the forming ability of the amorphous alloy is high, and the operation is simple and accurate; the preparation method is an ideal method for the preparation of the zirconium-based amorphous alloy.
Owner:TAIYUAN UNIV OF TECH +1
Distribution network 10 kV line load transfer path on-line selection system
InactiveCN104377692AQuick searchHigh speedInformation technology support systemAc network circuit arrangementsMaserParallel computing
The invention relates to a distribution network 10 kV line load transfer path on-line selection system and belongs to the technical field of electric power. The system comprises a master server and working stations. The maser server comprises a data interface, a storage and a processor. Each working station comprises a data interface and a processor. Each data interface comprises a data interface module, the storage comprises a database module, and each processor comprises a topology module and a transfer path analysis module. Each data interface module obtains CIM file data and E file data from an SCADA system. A data analysis module analyzes CIM files and E files, and then the analyzed files are stored in the database module. Each topology module is responsible for topology generation and simplification, and topology data are generated and simplified according to device parameters and the connection relation. Each transfer path analysis module analyzes the load transfer path in each 10 kV line. Compared with the prior art, the distribution network 10 kV line load transfer path on-line selection system has the advantages of being high in calculation speed, high in practicability and high in accuracy and being applied in multiple aspects.
Owner:STATE GRID CORP OF CHINA +2
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