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159 results about "Radiation flux" patented technology
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Radiation flux is a measure of the amount of radiation received by an object from a given source. This can be any type of radiation, including electromagnetic, sound, and particles from a radioactive source.
Method and system of dynamically controlling shaping time of a photon counting energy-sensitive radiation detector to accommodate variations in incident radiation flux levels
ActiveUS7149278B2Avoid saturationDetection sacrificedMaterial analysis using wave/particle radiationRadiation/particle handlingPhoton counting detectorHigh flux
A method and system of counting and tagging radiation energy received by a radiation detector is presented. The method and system are designed to dynamically control the sampling window or shaping time characteristics of a photon counting detector to accommodate variations of flux experienced by the detector so as to preserve optimum detector performance and prevent saturation during high flux conditions.
Owner:GENERAL ELECTRIC CO
Pulsed blackbody radiation flux enhancement
Owner:NEW STAR LASERS
Digital film grain
ActiveUS7015479B2Reduce lossesReduces and prevents signalTelevision system detailsSolid-state devicesSheet filmRadiation flux
Owner:CARESTREAM HEALTH INC
Regional earth surface sensible heat/latent heat flux inversion method and system based on remote sensing data
InactiveCN106169014AInformaticsSpecial data processing applicationsEarth surfaceNormalized Difference Vegetation Index
The invention discloses a regional earth surface sensible heat / latent heat flux inversion method based on remote sensing data. The method comprises the following steps that a research area and the remote sensing data are determined; remote sensing earth surface and regional meteorological parameters are prepared according to the remote sensing data, wherein the remote sensing earth surface parameters comprise a normalized difference vegetation index NDVI, vegetation coverage f, albedo, earth surface emissivity Emiss, earth surface temperature Ts and a leaf area index LAI, and the regional meteorological parameters comprise air temperature Ta and relative humidity RH; net radiation flux Rn inversion is conducted according to the remote sensing earth surface and regional meteorological parameters; soil heat flux G inversion is conducted according to the leaf area index LAI, the air temperature Ta and net radiation flux Rn; radiation-convection impedance rae inversion is conducted according to theoretical two-dimensional space of the net radiation flux Rn, soil heat flux G, the vegetation coverage f and the earth surface temperature Ts and a temperature profile equation estimated through sensible heat flux; regional earth surface sensible heat H / latent heat LE flux inversion is achieved according to radiation-convection impedance rae.
Owner:CHINA INST OF WATER RESOURCES & HYDROPOWER RES
Imaging system
InactiveUS7576332B2Material analysis by optical meansPhotometry using electric radiation detectorsImage detectionRadiation flux
Owner:ST GEORGES HEALTHCARE NHS TRUST +2
Light attenuation device capable of continuously adjusting light intensity
ActiveCN105388610ARealize piecewise continuous attenuationEvenly distributedOptical elementsUltrasound attenuationAttenuation coefficient
The invention discloses a light attenuation device capable of continuously adjusting the light intensity. The light attenuation device includes a light source, two or more than two integrating spheres; wherein each integrating sphere is provided with a light inlet hole and a light outlet hole, the integrating spheres are in sequential cascade connection,i.e., the light output hole of the previous integrating sphere is connected to the light inlet hole of the next integrating sphere, each connection position between the two integrating spheres which are in sequential cascade connection, is provided with an electronic changeable diaphragm which is used for adjusting the radiation flux of light entering the integrating spheres and light emitted from the integrating spheres. The light attenuation device capable of continuously adjusting the light intensity can achieve sectionally continuous attenuation and quantitative adjustment of the light intensity, the attenuated light intensity is uniformly distributed, and the adjustment range of the attenuation coefficient is wide; the light attenuation device capable of continuously adjusting the light intensity can be applied to a light attenuator capable of widely, continuously and quantitatively adjusting the light intensity, or can be applied to light detection sensitivity detection of a device or equipment, light source radiant quantity and color measurement, spectral characteristic analysis, and the like.
Owner:NANJING UNIV 5D TECH
Method and system for controlling an X-ray imaging system
ActiveUS20060104496A1Material analysis using wave/particle radiationRadiation/particle handlingUltrasound attenuationX-ray
Methods and systems for controlling an X-ray imaging system. The method for controlling an X-ray imaging system includes acquiring a plurality of subviews of patient attenuation data wherein a first set of subviews of patient attenuation data is acquired at a first radiation flux level and a second set of subviews of patient attenuation data is acquired at a second radiation flux level. The first radiation flux level is different than the second radiation flux level. The method further includes combining the first set of subviews of patient attenuation data and the second set of subviews of patient attenuation data to form corrected views for subsequent image generation.
Owner:GENERAL ELECTRIC CO
Realizing method and device of high precision radiation brightness standard based on standard detector
This invention relates to a visible light wave band based on the standard detector high accuracy radiation brightness datum realization means and the equipment. This invention by the low temperature radiation set took the ray radiation flux measurement the primary datum, has used based on the light trap structure multi- wave bands light filter type radiation brightness idea, has realized the low temperature absolute radiac set to the Trap standard detector standard transmission. This invention multi- wave bands light filter type spoke brightness counts the structure compact, long-term stability high, the design has the precise constant temperature control system, may use in the different ambient temperature but the measuring accuracy not being able to reduce, suits extremely as the spoke brightness laboratory datum performs the long-term preservation or took the daily working standard performs to use, is extremely convenient. May reduce the existing spoke brightness datum greatly the uncertainty, has provided set of brand-new mentalities and the method.
Owner:ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
Assembly for detection of radiation flux and contamination of an optical component, lithographic apparatus including such an assembly and device manufacturing method
InactiveUS20050133727A1Accurate valueAccurately establishedThermometer detailsBeam/ray focussing/reflecting arrangementsRadiation fluxSignal detector
Owner:ASML NETHERLANDS BV
Free-form surface lens construction method based on lighting of LED desk lamp
InactiveCN104317053ASimple design methodImprove effective utilizationPoint-like light sourceSpecial data processing applicationsIlluminanceLight spot
The invention provides a free-form surface lens construction method based on lighting of an LED desk lamp. According to the method, the mode that the free-form surface lens of the LED desk lamp is obtained in a three-dimensional space is simplified into the mode that the generatrix 1 of the free-form surface of the lens is obtained in a two-dimensional space, coordinates are established with the light source of the LED desk lamp as the origin, the relation between an incident light vector, an emergent light vector and a normal vector is listed according to the Snell law, and an equation is established; an equation can be listed because the radiation flux of the light source of the LED desk lamp is equal to the luminous flux received by a target lighting face, light spots formed on the target lighting face in calculation are even round light spots, and therefore the illuminance E is the same, and the relation between the known coordinates on the target lighting face and the lens free-form surface coordinates can be established. According to the coordinates on the known target face, the generatrix 1 of the free-form surface of the lens is obtained through iteration solution with a numerical method, the generatrix 1 is subjected to data fitting and rotates around an axis so that the free-form surface can be obtained, and the free-form surface is subjected to closed materialization so that the lens can be obtained. Through the method, the effective utilization rate of light and the uniformity ratio of the illuminance are increased.
Owner:CHONGQING UNIV OF POSTS & TELECOMM
Photovoltaic plate failure hazard detection equipment and method based on wireless communication
ActiveCN102288856APrecise positioningAccelerate Troubleshooting HazardsTransmission systemsElectrical testingDiscriminatorDisplay device
The invention relates to a photovoltaic polar plate fault damage detection device based on wireless communication and a method of the same. The device comprises a temperature sensor, a solar radiation meter, a voltage sensor, a CPU (central processing unit) motherboard, a wireless signal transmitter, a fault display and the like, wherein the CPU motherboard comprises a wireless signal receiver, a radiation amount converter, a power comparator, a current comparator, a temperature converter, a fault discriminator, a register, a fault processor and the like. The temperature sensor, the solar radiation meter and the current transformer are arranged in an array to collect the ambient temperature, the solar radiation flux per unit area and the current of each series group of the photovoltaic array, data are transmitted into the register through wireless communication and respectively to the radiation amount / power converter, the temperature converter, the current comparator and a summing device to obtain the theoretical array output power, the actual array output power, the total current and the current of the series groups with differences, results are transmitted into the power comparator, the fault discriminator and the fault processor to obtain the current fault state and the series group with the fault, and results are transmitted into the fault display. The possibility of failure is verified through coupling of multiple parameters, and thus the false alarm rate can be reduced effectively. Meanwhile, the fault can be positioned, and the speed of troubleshooting of the photovoltaic polar plate can be increased.
Owner:JIANGSU WEIHENG INTELLIGENT TECH CO LTD
Pulsed blackbody radiation flux enhancement
A system and method for enhancing the flux and separation properties of water filtration membranes by oxidizing raw or processed water constituents with direct photolysis of the water matrix by pulsed blackbody UV, yielding ozone and hydrogen peroxide, hydroxyl radicals and other short lived oxidizing species. The result thereof, causing precipitation of inorganic molecules or organically complexed minerals, partial or complete mineralization of organic molecules and the deactivation or destruction of microbes including: virus, bacteria and protozoa. The system and method comprises a pulsed blackbody, deep-UV reactor having at least one treatment chamber, the reactor having a conveying assembly to convey the water to be treated into the chamber; a filter assembly to screen the UV treated water; a caustic supply means for the post-treatment of water; a recovering assembly recovering the permeate at an outlet of the filtration means. The effect of such UV water treatment is multifaceted. One aspect is the reduction of the transmembrane pressure (TMP), another is the reduction of duration of backwash and caustic cleaning cycles. Also, the oxidation of iron and manganese to insoluble compounds, without the addition of oxidizing agents, does not harm the membranes. Iron and manganese turn into hydroxide crystals trapped by the filtration membrane and separated from the permeate. These effects integrate to enhance the water flux through the filter membrane.
Owner:NEW STAR LASERS
Detector for Use in Charged-Particle Microscopy
ActiveUS20120205539A1Material analysis using wave/particle radiationElectric discharge tubesRadiation fluxParticle physics
A method of investigating a sample using a charged-particle microscope is disclosed. By directing an imaging beam of charged particles at a sample, a resulting flux of output radiation is detected from the sample. At least a portion of the output radiation is examined using a detector, the detector comprising a Solid State Photo-Multiplier. The Solid State Photo-Multiplier is biased so that its gain is matched to the magnitude of output radiation flux.
Owner:FEI CO
LED (Light-emitting Diode) street lamp with adjustable spectrum in foggy days
InactiveCN104329628AImprove the lighting environmentFlexible and convenient controlMechanical apparatusPoint-like light sourceEffect lightOperability
The invention belongs to the technical field of semiconductor lighting devices, and particularly relates to an LED (Light-emitting Diode) street lamp with adjustable spectrum in foggy days. The street lamp comprises an LED street lamp part with the adjustable spectrum, a remote control device and a manual control panel, wherein the LED part internally comprises multiple groups of LED package devices with different light colors which are mixed to emit white light; the LED package devices at least comprise one group of yellow light packaging devices with the peak wavelength of 570-600nm; each group of packaging devices is controlled by independent drive, and has adjustable power. The street lamp can emit white light at night with favorable visibility, and provides illumination for roads; the street lamp can be switched to emit yellow light with strong fog permeability in foggy days with poor visibility or under severe dust-haze weather, and the radiation flux of the yellow light is enhanced. The street lamp can provide favorable illumination environment for the roads at different weather conditions, so that the traffic accident rate can be effectively reduced, and the road traffic security is improved; the street lamp is flexible, simple and convenient to control, has strong operability, and can be widely applied in various occasions such as docks, airports and tunnels.
Owner:FUDAN UNIV +1
Radiation intensity-based method for simulating radiation transfer of complex terrain area
InactiveCN101876700AFor accurate simulationRealize computingWave based measurement systemsTerrainComputer graphics
The invention relates to a radiation intensity-based method for simulating the radiation transfer of a complex terrain area. The method comprises the following steps of: (1) inputting a digital elevation model of a research area, calculating the orientations of surficial grid bins and making data preparation; (2) inputting a sun incidence position and energy distribution state data and calculating initial solar radiation flux density received by each surficial grid bin; (3) calculating visible factors among the surficial grid bins by a computer graphics method; (4) inputting spectral characteristic data of the surficial grid bins and establishing a radiation intensity equation of the complex terrain area; (5) solving the radiation intensity equation by a numerical iteration method to obtain the radiation flux density of each surficial grid bin after the radiation is balanced; and (6) calculating a directional reflectance ratio factor and surficial grid bin radiance of the complex terrain area according to the sampling location of a sensor and realizing accurate simulation and calculation of a radiation transfer process of the complex terrain area.
Owner:BEIHANG UNIV
Building outer face fire simulation apparatus
ActiveCN106875822AEasy to operateImprove economyEducational modelsCombustion chamberMeasuring instrument
The invention discloses a building outer face fire simulation apparatus, characterized by comprising: a multi-layer combustion chamber, a simulated side wall, a moving platform, an armored thermocouple probe, a heat radiation flux measuring instrument, a thermocouple patch, a glass frame, sunlight-controlled film-coated glass, simulated combustibles, a water-cooled heat flow meter, an axial fan, a DV camera, and a telescopic fireproof cornice. The multi-layer combustion chamber is formed by the lamination of two combustion chambers. The simulated side wall is combined with the wall faces with windows to form a U shaped structure. The telescopic fireproof cornice is arranged at the upper part of the lower-layer combustion chamber's windows. The apparatus of the invention can be used in the research on the fire spreading condition of the outer wall face of a high rise building under the action of an environmental wind, the research on the development characteristics of the fire flames and the smoke plume under the restrictive condition of the side wall as well as the characteristic rule of a secondary fire generated from the fire overflow at the outer side of the building into the upper layer combustion chamber, so as to provide reference to fire prevention designs for similar buildings.
Owner:HEFEI UNIV OF TECH +1
Method and apparatus for detecting high-energy radiation using a pulse mode ion chamber
A method for measuring high-energy radiation flux includes applying a positive voltage to electrodes in an ion chamber filled with a gas capable of forming charged ions by a high-energy radiation, measuring a positive ion current signal related to ion currents induced by the positive voltage, applying a negative voltage to the electrodes, measuring a negative signal related to ion currents induced by the negative voltage, and determining a magnitude of the high-energy radiation flux based on the ion current signal.
Owner:THERMO FISHER SCIENTIFIC INC
Non-vision-field imaging technology based on single-photon detector
InactiveCN108333596AOptical detectionElectromagnetic wave reradiationSingle-photon avalanche diodeNonlinear model
The invention provides a non-vision-field imaging technology based on a single-photon detector. The technology includes the main contents of forward and reverse light transmitting, non-vision-field imaging boundary, and non-vision-field imaging by means of the single-photon detector, and mainly includes the steps of giving the total radiation flux when light is reflected out of the surface of a material, directly imaging a visible light material panel by detecting pixels, vectorizing imaging models according to the alphabet sequencing mode to express indirect illumination components and conduct solving through the iterative least square method, recording the behaviors of a photon through the single-photon avalanche diode detector, recording the incidence time of a photon stream by means ofa determined time window, expressing the probability of detecting a certain number of photon behaviors through poisson distribution, and describing the problem into a maximum likelihood estimation problem and conducting solving. A non-vision-field imaging nonlinear model and a dual-convex solving method are put forward on the basis of the single-photon detector, and the technology has the advantages of being better in algorithm performance and more robust in system.
Owner:SHENZHEN WEITESHI TECH
Detector for use in charged-particle microscopy
ActiveUS8735849B2Thermometer detailsMaterial analysis using wave/particle radiationRadiation fluxParticle physics
Owner:FEI CO
Transmitted-light base for a microscope, and method for regulating the illumination intensity of a transmitted-light base
Owner:LEICA INSTR SINGAPORE PTE
Method and device of non-uniformed correction for short wave infrared detector
InactiveCN103065280AImprove the effect of non-uniformity correctionSimple structureImage enhancementImaging processingRadiation flux
The invention relates to a method and a device of non-uniformed correction for a short wave infrared detector, and belongs to the field of the technical field of image processing. The method of non-uniformed correction for the short wave infrared detector make the non-uniformed correction standard radiation as a source of radiation of the short wave infrared detector, and control the radiation flux received by the short wave infrared detector by adopting a diaphragm, provide standard input for the non-uniformed correction, calculate and correct the non-uniformed correction coefficient through a stream-lined module mode. Thus non-uniformed correction effect of the short wave infrared detector is improved. The device for non-uniformed correction of short wave infrared detector is simple in structure, easy to realize and good in effect.
Owner:LUOYANG INST OF ELECTRO OPTICAL EQUIP OF AVIC
Two-point correction method for uncooled infrared detector
The invention discloses a two-point correction method for an uncooled infrared detector. According to the method, two kinds of materials different in radiation rate are utilized as blocking pieces toconduct two-point correction on the detector. Firstly, a two-point correction system for the uncooled infrared detector is constructed, wherein the two-point correction system comprises the blocking piece A, the blocking piece B, the detector, an output circuit module, a blocking piece control module and an FPGA data processing module; secondly, the detector and the output circuit module are utilized to collect analog signals and convert the analog signals into digital signals; thirdly, the blocking piece control module is utilized to control the blocking piece A and the blocking piece B to appear in front of a glass window of the detector in order to obtain different radiation fluxes; finally, the FPGA data processing module is utilized to achieve two-point nonuniform correction through the utilization of collected data. By means of the method, the bias and gain of a photosensitive element of the detector are both compensated for, and the imaging quality is effectively improved.
Owner:BEIJING INST OF REMOTE SENSING EQUIP
Flooring material heat radiation tester
The invention discloses a flooring material heat radiation tester. The tester comprises a test rack, wherein a smoke exhaust fan, a heat source assembly, a workbench and a heat flow meter assembly are arranged on the test rack; the smoke exhaust fan is arranged at the top of the test rack, the heat source assembly cooperates with the workbench, and the heat flow meter assembly is arranged on the lower side of the workbench; the heat source assembly comprises a radiation heat source and a burner. According to the flooring material heat radiation tester, a certain radiation flux curve is obtained through calibration by the heat flow meter assembly, and the flame propagation distance is converted into the critical radiation flux value; according to the principle, the tester can predict the burning flame propagation capacity and the fireproof performance of materials; the tester can better simulate the burning behavior of the materials in a real fire environment, is applicable to quantitative tests of flame resistance of various materials and can be used by various material or product manufacturing institutions, research and development institutions, inspection departments, scientific research institutions and the like.
Owner:江苏费尔曼安全科技有限公司
Light adjusting-type infrared radiation calibration method
InactiveCN104316194ADrawn preciselyMatch the actual responseRadiation pyrometryIlluminanceTwo temperature
The invention relates to the field of optical infrared radiation calibration, and provides a light adjusting-type infrared radiation calibration method. Through adjusting radiation flux incident to a calibrated device by blackbody radiation, irradiance radiated to the image surface of a calibrated system is changed, blackbodies with two temperatures are used at the same time, or the same blackbody changes temperature for one time, radiation flux incident to the calibrated system is calculated, and an infrared radiation response curve of the calibrated device is drawn. The common mode in which the temperature of the blackbody is adjusted to calibrate the device response curve is changed, the calibration speed is fast, influences such as background, radiation of the calibrated device itself and local output can be effectively removed, and the response curve of the calibrated curve can be drawn more accurately.
Owner:中国人民解放军63620部队
Transmission type flat response soft X-ray radiation flux measuring device
ActiveCN105842727ALess installation workLess calibration workX/gamma/cosmic radiation measurmentSoft x rayCurrent limiting
The invention provides a transmission type flat response soft X-ray radiation flux measuring device. A cone is fixedly arranged at the periphery of the back end of an anode; an output head is arranged at the periphery of the cone; the output head is connected with a shell; an inner cylinder is fixedly arranged at the periphery of a clamping ring; a thin film cathode is pressed in the inner cylinder through the clamping ring; an outer cylinder is arranged at the periphery of the inner cylinder; an insulating layer is arranged between the inner cylinder and the outer cylinder; a locking ring is arranged at the periphery of the outer cylinder; an insulating ring is pressed in the conical outer cylinder through the locking ring; the outer cylinder is connected with the output head through a connecting ring; the shell is fixedly connected with a high-pressure pipe; a ceramic valve, a connecting pin, an insulating cylinder and a high-pressure head are sequentially connected with one another on the axis of the high-pressure pipe; and a current limiting resistor is connected with the inner cylinder and the ceramic valve. According to the transmission type flat response soft X-ray radiation flux measuring device of the invention, the thin film cathode can provide conditions for optoelectron subsequent processing; and a flat response filter and an XRD detector are integrated, so that the structure of the device is more compact. With the device adopted, X-ray radiation flux measurement in the inertial confinement fusion field can be realized.
Owner:LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
Spectral imaging
ActiveCN102395901ASolve the real problemX/gamma/cosmic radiation measurmentRadiation fluxPhotomultiplier
An imaging system includes a scintillator array (202) and a digital photomultiplier array (204). A photon counting channel (212), an integrating channel (210), and a moment generating channel (214) process the output signal of the digital photomultiplier array (204). A reconstructor (122) spectrally resolves the first, the second and the third output signals. In one embodiment, a controller (232) activates the photon counting channel (212) to process the digital signal only if a radiation flux is below a predetermined threshold. An imaging system includes at least one direct conversion layer (302) and at least two scintillator layers (304) and corresponding photosensors (306).; A photon counting channel (212) processes an output of the at least one direct conversion layer (302), and an integrating channel (210) and a moment generating channel (214) process respective outputs of the photosensors (306). A reconstructor (122) spectrally resolves the first, the second and the third output signals.
Owner:KONINKLIJKE PHILIPS ELECTRONICS NV
Method and system for controlling an X-ray imaging system
ActiveUS7649974B2Material analysis using wave/particle radiationRadiation/particle handlingUltrasound attenuationSoft x ray
Owner:GENERAL ELECTRIC CO
Filtered back-projection algorithm for Compton telescopes
InactiveUS7345283B2Reconstruction from projectionMaterial analysis by optical meansBack projectionCelestial sphere
Owner:RGT UNIV OF CALIFORNIA
Radiation detecting device and method of operating
ActiveUS20100294946A1Material analysis by optical meansNeutron radiation measurementEngineeringRadiation flux
A method of operating a radiation-detecting device includes charging a first charge storage region of a charge storage structure to place a first charge value at the first charge storage region, and charging a second charge storage region of the charge storage structure to place a second charge value at the second charge storage region. The method further includes conducting a first read operation to determine a change in the first charge value at the first charge storage region at a first time after charging the first charge storage region, and determining a first radiation flux value for an environment containing the charge storage structure based on the change in the first charge value at the first time.
Owner:INFINEON TECH LLC
Method of localizing fluorescent markers
InactiveCN1789982AMaterial analysis using wave/particle radiationElectric discharge tubesExcitation beamFluorescent radiation
The present invention describes a method for determining the location of fluorescent labels in a sample (4) with high spatial resolution. For this purpose, the sample (4) is irradiated with the excitation beam (11), while the sample (4) is scanned with the particle beam (3). During scanning, the markers are collided with the particle beam (3) and destroyed so that the collided markers no longer emit fluorescent radiation. This results in a decrease in the fluorescence radiation flux. Detect this drop. Since the position of the particle beam (3) relative to the sample is known at the moment the marker is destroyed, the position of the marker in the sample can also be known.
Owner:FEI CO
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