73 results about "Radiation-Total" patented technology

The invention discloses a method for remote sensing estimation of net primary productivity of plants. The method comprises the steps of performing data pre-processing on remote sensing data; extracting LAI data of an MODIS product in the remote sensing data, and calculating an FPAR; calculating astronomical radiation total Q0 according to geographical location information of a research area including longitude and latitude and date; extracting an empirical coefficient according to conventional global radiation and sunshine percentage data of the research area; using Q0 and the empirical coefficient to calculate solar total radiation quantity SOL; calculating photosynthetically active radiation (APAR) according to the FPAR and the SOL; extracting soil water content and an empirical parameter in the remote sensing data, calculating current leaf water potential, and calculating water stress factor in combination with the previous empirical coefficient; extracting temperature data in the research area in meteorological data, calculating temperature stress factor f1(Ta); calculating solar energy utilization rate epsilon according to f1(Ta), and the maximum solar energy utilization rate; and calculating net primary productivity (NPP) according to the APAR and epsilon. The method has the advantages of being high in estimation precision.

The invention provides a method for forecasting a photovoltaic power generation quantity. The method comprises the following steps of: screening and classifying historic power generation quantity data of a photovoltaic power station, excavating the historical data of the photovoltaic power station and reprocessing weather data to obtain a total radiation quantity of the photovoltaic power station; and normalizing the type of the weather, the temperature, the rainfall, the humidity, the season and the total radiation quantity as an input of a forecasting model and calculating through a nerve network so as to forecast the power generation quantity of the photovoltaic power station within 12 hours or 4 hours.

The invention discloses a total dose irradiation test method for an MCM/HIC circuit based on low-energy X-ray. The method comprises the following steps: firstly analyzing the MCM/HIC circuit to determine irradiation sensitive components in the MCM/HIC circuit, then irradiating one or a plurality of sensitive components by an irradiation fixture in the operating state of the MCM/HIC circuit to determine the radiation resistance of the sensitive components in the operating state of the circuit, and finally performing total dose irradiation on the whole MCM/HIC circuit and testing electrical parameters of the MCM/HIC circuit in an on-line monitoring manner. The technology of the invention can be used for achieving anti-radiation total dose level test evaluation on a multi-chip hybrid integrated circuit, thus evaluating the radiation resistance of the whole circuit, and studying the radiation resistance of the sensitive components in the circuit, which is good for the partial anti-radiation reinforcement design of a circuit.

The invention provides an asphalt ultraviolet ray ageing indoor test method. An ultraviolet ray ageing simulation system is utilized to simulate radiation intensity of strengthened ultraviolet ray under the natural condition in the man-made environment, outdoor ultraviolet ray radiation total effective time is converted into indoor ultraviolet ray radiation total effective time, so that the radiation intensity of ultraviolet ray reaches more than ten times that of the outdoor condition, test result can be obtained in a short time period, ultraviolet ray indoor test is ensured to well simulate the ultraviolet ray outdoor environment, thus having significance for completely analyzing asphalt ultraviolet ray ageing degree, disclosing changing rule in asphalt ultraviolet ray ageing process, researching asphalt ageing principle and determining asphalt ultraviolet ray ageing resistant evaluation indexes in a strong ultraviolet ray area. The test method is reasonable in design, and test operation is simple, convenient and feasible.

The embodiment of the invention provides a method for calculating the cooling and heating load of a building. The method comprises the steps that the total heat obtaining amount and the total heat transfer amount of each calculation time step length are obtained; wherein the total heating amount comprises the total indoor heating amount and the total room solar radiation total heating amount; wherein the total heat transfer amount comprises heat transfer amount of a room through an enclosure structure and room ventilation heat exchange amount; and according to the total indoor heating amount,the total room solar radiation heating amount, the heat transfer amount of the room through an enclosure structure and the ventilation and heat exchange amount of the room, a cooling load and a heating load are calculated respectively. According to the method for calculating the building cooling and heating load, the building cooling and heating load can be accurately and rapidly calculated.

The embodiment of the invention provides an array antenna total radiation power measurement method and device, and a computer storage medium, and the method enables the number of sampling points to bereduced in the measurement process of the total radiation power of an array antenna through the partitioning of the to-be-measured array antenna, and can greatly improve the testing efficiency in some implementation processes.

The invention discloses a line box for an aerospace craft star sensor. The line box comprises multiple circuit boards with different functions and is characterized by also comprising a frame, a cover plate and a driftbolt. The circuit boards and a power board are fixed in the frame to form a module; the modules have the same appearance size and are mutually overlapped in a direction vertical to the module board to form a whole; the circuit board with a power supply function is mounted below all modules; data transmission connectors matched with each other are arranged between the circuit boards of adjacent two modules, and the circuit boards are inserted together after the assembly; the cover plate is mounted on the top module; and after the assembly, the driftbolt penetrates through the overlapped modules in a direction vertical to the circuit board to fix all the modules together. The line box disclosed by the invention has enough strength and rigidity, good heat radiation, certain resistance against the radiation total dose, compact structure, low weight and good expandability, and is convenient to mount and easy for realization of batch production of the products.

A distributed fiberoptic radiation sensor is described which may employ one or more radiation sensor elements distributed in a single optical fiber. Such optical fibers may be placed on surfaces, or even within parts, to unobtrusively measure radiation in precise and even difficult to reach locations. Different sensor elements may respond to different radiation types and wavelength ranges, with each sensor element causing a different wavelength of light to be emitted or absorbed within the fiber. By employing an appropriate combination of detection methods at the ends of the fiber, the distributed sensor may provide type and calorimetric discrimination of radiation incident on one or more distinguishable locations. The radiation information thus detected may be integrated, if desired, to obtain corresponding real-time dose information. With such integration, the device becomes a distributed real-time dosimeter. In another embodiment, the particular radiation sensors distributively employed may undergo permanent change in absorption characteristics. Such a device infers a total radiation dose over a particular period by measuring a change in optical response between the beginning and the end of the particular period.

The invention relates to a total dose radiation test method and device for a nano field effect transistor, and the test method comprises the following steps: providing a field effect transistor devicewith statistical significance, carrying out the first electrical parameter test, and obtaining a first threshold voltage; performing radiation processing on the field effect transistor for a plurality of times until a preset total radiation dose is reached, and performing a second electrical parameter test after each radiation processing; performing bias processing on the field effect transistorafter radiation processing to the total radiation dose, and then performing a third electrical parameter test to acquire a third threshold voltage; and judging whether the field effect transistor device meets the product requirement or not according to the defect distribution value obtained by data processing. The test method provides an analysis method for the nano field effect transistor, and effectively solves the problems that the fluctuation amplitude is large due to the quantum effect and the fluctuation effect of the nano field effect transistor, and the traditional technology cannot accurately analyze.

The invention discloses a short-term solar radiation prediction method based on CNN-LSTM, and the method comprises the steps: (1) taking a target site and an adjacent site as sample sites, and collecting the meteorological parameters and radiation data of the sample sites; (2) forming a two-dimensional matrix based on meteorological parameters of all sample stations, and reconstructing spatial features; (3) reconstructing time characteristics based on the historical solar radiation sequences of all the sample stations; and (4) respectively taking the spatial features and the time features as inputs of the CNN part and the LSTM part of the CNN-LSTM hybrid model, and predicting the total solar radiation of the target station. The invention further discloses a short-term solar radiation prediction device based on the CNN-LSTM. The method and the device are based on meteorological parameters and radiation data of a target site and peripheral sites. According to the method, the spatial features and the time features are reconstructed and input into the CNN-LSTM hybrid model to predict the solar radiation of the target station, so that the precision of solar radiation prediction is improved, and the optimal scheduling and safe and stable operation of a power system are guaranteed.

The invention relates to a method for preparing safe and nutritional soybean milk; a motor, a crushing cutter, a heating device and a cup body are provided; the method at least includes the following several stages: (1) a crushing stage including a step of adopting the motor to drive the crushing cutter to rotatingly crush a material and a step of allowing the motor to stop working; and (2) a heating stage including a step of adopting the heating device to heat a liquid in the cup body and a step of allowing the heating device to stop heating. In the method for preparing the safe and nutritional soybean milk, the radiation total heat of the heating device is Q, the soybean milk preparing total amount is V, and the ratio of Q to V is 300-800 kJ/L. Therefore, urease and trypsin inhibitors in the soybean milk can be fully inactivated, and thus the soybean milk is allowed to be more nutritional and safer.

The invention discloses a super-radiation cooling coating structure. A city building is covered with the super-radiation cooling coating structure, and the super-radiation cooling coating structure comprises a coupling agent layer, a solar spectrum radiation total reflection layer and an infrared emission layer from inside to outside. The sunlight is reflected through the solar spectrum radiationtotal reflection layer, absorption of energy in the sunlight is reduced, and the heat of the building is radiated outwards through the infrared emission layer. In the two ways, the temperature of thebuilding is lowered, the heat island effect of a city is eased, the consumption of electricity for city refrigeration is reduced, and the situation that harmful smoke is generated due to the heat island effect, and the health of urban residents is harmed is avoided.

The invention discloses a numerical weather forecast total radiation system error classification calculation method. The method comprises steps of preprocessing historical power sample data of a photovoltaic power station, including power sequence missing measurement processing and power sequence smoothing processing; feature extraction being carried out from the photovoltaic daily output amplitude and the fluctuation condition, and corresponding daily power sequence features being constructed; constructing an input vector matrix based on a self-organizing neural network, and performing normalization processing; determining a forecast weather type according to the forecast day numerical forecast data; and calculating a numerical weather forecast total radiation system error. Compared withthe prior art, changes of all meteorological data are integrated from the perspective of power characteristics, and the classification result is more suitable for photovoltaic power station historicaldata classification compared with multi-meteorological-factor clustering and has higher accuracy; the influence of NWP misinformation on system error calculation is avoided, and the obtained NWP total radiation system error is more accurate.

The invention discloses a preparation process of a conductive agent of a lithium ion battery based on modified grapheme. The process comprises the following steps of: the step 1, performing activatingtreatment of the 55-60 parts of grapheme, mixing the grapheme with aluminum-based rare earth liquid according to the mass ratio of 1:(1.2-1.8) to be transmitted into a high-pressure reactor, and employing a radiation source with 60Cor to perform radiation processing, wherein the radiation total dose is 4.0-5.0Gy, and the radiation time is 40-50 min; and employing deionized water to wash the mixture after the reaction is finished and performing surface modification processing for standby application. The grapheme is activated to allow the activate to be more fully combined with the aluminum-based rare earth liquid, the aluminum-based rare earth liquid takes Al as a matrix, rare earth metal elements of SC, Y and Tm are added to form a compound, and the compound is prepared with concentratedhydrochloric acid to form rare-earth salts so as to improve the conductive conduction of grapheme, and the two are stable in performance after high-pressure radiation.

The invention relates to a method for determining the total dose resistant capacity of a device by combining ground and on-orbit environments. The method comprises the steps of determining on-orbit ionization radiation total dose environmental parameters of the device, determining a performance test dose point of a ground irradiation test of the device and a dose rate of the irradiation test according to the on-orbit ionization radiation total dose parameters, determining an ionization radiation total dose sensitive parameter of the device through the ground irradiation test, conducting an on-orbit test on the device, detecting variations of the sensitive parameter of the device and the ionization radiation total dose value borne by the device in real time, and thus determining the ionization radiation total dose resistant capacity of the device. The method determines the ionization radiation total dose resistant capacity of the device is determined by combining the ground irradiationtest and the on-orbit environment, and has the characteristic of being more accurate.

The invention relates to the field of X ray shooting equipment, in particular to a scanning type beam limiting collimation mechanism of an X ray source, and a scanning control method of the scanning type beam limiting collimation mechanism of an X ray source. The technical scheme adopted by the invention lies in that the scanning type beam limiting collimation mechanism of an X ray source comprises a scanning collimation block, a scanning direction limiting block and a scanning drive device, wherein the scanning collimation block is driven by the scanning drive device to move in a manner of sticking the upper surface of the scanning direction limiting block in the direction from a first scanning limiting block to a second scanning limiting block. The scanning type beam limiting collimationmechanism of an X ray source disclosed by the invention has the advantages that through driving the scanning collimation block having a unit light field passage in the middle to move for scanning onthe upper surface of the scanning direction limiting block having an effective light field opening in the middle, besides, through cooperation with a lateral limiting block, scattered X rays are shielded and absorbed by the scanning collimation block, the scanning direction limiting block and the lateral limiting block, so that instantaneous radiation dosage and total radiation dosage of environment are reduced, medical personnel and shot people are protected, and image quality is increased.

The invention discloses a remote sensing satellite high-resolution camera in-orbit absolute radiation calibration method and device. The method comprises the steps of: setting five levels of targets in a preset experiment field region, and uniformly selecting a plurality of sampling points on each target; collecting and measuring the surface reflectance of each sampling point in a preset time period before and after a satellite passes through the five levels of targets through a ground spectrometer; according to the surface reflectance of each sampling point and the acquired other parameters (atmospheric characteristic data, solar diffusion radiation, total radiation data and the like) of a radiation transmission model, determining the entrance pupil radiance of each target in the preset time period before and after imaging of a satellite camera; and calculating to obtain an absolute radiometric calibration coefficient according to the acquired remote sensing satellite high-resolutioncamera image data, the entrance pupil radiance of each target and a preset linear equation model. The technical problem that in the prior art, the requirement for in-orbit absolute radiometric calibration of a high-resolution camera of a high-resolution remote sensing satellite cannot be met is solved.

The invention relates to a method for reversing aerogel extinction coefficient from aerogel glass experiment data and provides a method for calculating optical performance of aerogel. An aerogel glass optical model is rebuilt through an interface energy balance method, hourly radiation transmittance under each extinction coefficient is solved by combining hourly sun height angle, transmitted radiation total energy is solved according to experiment data, and squares of differences of hourly transmittance energy and the experiment data are summed; the aerogel extinction coefficient and the transmitted radiation total energy have a function relationship in one-to-one correspondence, so that the extinction coefficient with minimum errors is solved through a golden section method and is the extinction coefficient of aerogel under sunlight; a calculation result is proved to be still accurate and reliable at other time.

The invention provides an anomaly detection method and device for a total radiometer and the total radiometer. The method comprises the steps of acquiring the current temperature, the current relativehumidity and the last desiccant replacement time in a cavity of the total radiometer; determining the current absolute humidity in the cavity of the total radiometer according to the current temperature and the current relative humidity in cavity of the total radiometer; determining an anomaly moment according to a relationship between the current absolute humidity and a preset humidity threshold; and determining an anomaly detection result according to a preset desiccant action time threshold, the last desiccant replacement time and the anomaly moment. According to the anomaly detection method provided by the scheme, the reason causing the anomaly of the total radiation meter can be analyzed according to the time difference between the anomaly moment and the last desiccant replacement time and the preset desiccant action time threshold, and the anomaly detection result is determined, so that the accuracy of the anomaly detection result is improved, the anomaly detection efficiency isimproved, and a foundation is laid for guaranteeing the reliability of the total radiometer.

The invention discloses an equivalent method for calculating a radiation near field of a circular-aperture antenna, and the method comprises the following steps: 1, setting a plurality of sampling points on an aperture surface of the circular-aperture antenna at certain intervals; 2, calculating a corresponding equivalent magnetic current according to the field distribution at each sampling point;3, calculating a radiation field of the equivalent magnetic current at each sampling point in space; 4, superposing the radiation fields of the sampling points to obtain a radiation total field of equivalent magnetic current on the aperture surface; and 5, calculating a field intensity correction coefficient. The invention is suitable for circular aperture antennas, and can also be popularized and applied to antennas with other shapes and apertures; and the limitation that a geometric model or geometric parameters cannot be obtained is overcome, and engineering applicability is achieved.

The invention relates to a total radiometer indoor calibration system, which comprises an integrating sphere and a light source; the integrating sphere is a shell composed of a cylindrical shell, twohemispherical shells and a plane, the two ends of the cylindrical shell are respectively connected with the hemispherical shells respectively, the lower parts of the cylindrical shell and the hemispherical shells are connected with the plane; a first light outlet hole and a second light outlet hole are formed in the plane, a light inlet hole is formed in the cylindrical shell, the light source isinstalled in the light inlet hole, and the light source is used for providing light for an inner cavity of the integrating sphere; a to-be-measured total radiometer receives the illumination in the integrating sphere through the first light outlet hole and a standard total radiometer receives the illumination in the integrating sphere through the second light outlet hole, or the standard total radiometer receives the illumination in the integrating sphere through the first light outlet hole and the to-be-measured total radiometer receives the illumination in the integrating sphere through thesecond light outlet hole. According to the invention, the volume of the integrating sphere is reduced, the stability of the light source is convenient to adjust, the calibration convenience is improved, and user operation is facilitated.

Fractionation optimization receives inputs including a radiation dose distribution to be delivered by fractionated radiation therapy, maximum and minimum number of fractions, and Biologically Effective Dose (BED) constraints for one or more organs-at-risk. A two-dimensional (2D) graph is displayed of a parameter X equal to or proportional to (I) versus a parameter Y equal to or proportional to (II) where N is the number of fractions, D is a total radiation dose to be delivered by the fractionated radiation therapy, and d t is the fractional dose in fraction t. A constraint BED lines are displayed on the 2D graph depicting each BED constraint. A marker is displayed at a location on the 2D graph defined by a current fractionation and a current total dose. A new value for the current fractionation and/or the current total dose is received, and the marker is updated accordingly. Alternatively a second marker is displayed showing the new fractionation scheme along with its comparative advantages and disadvantages with respect to the current fractionation.