157 results about "Radiation flux" patented technology

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.

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.

An assembly for detection of at least one of radiation flux and contamination on an optical component includes a detector configured to receive at least one of the radiation flux and contamination, and when the assembly is in use, to generate a detector signal correlated to at least one of the radiation flux and contamination on the component. A meter is configured to measure the detector signal. The detector includes at least one wire.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.