76 results about "Direct solar radiation" patented technology

The invention provides an indoor temperature field prediction method and system considering dynamic change of solar radiation, and belongs to the field of indoor temperature field prediction.The method comprises the steps that an equivalent surface heat source intensity model of direct solar radiation and an equivalent surface heat source intensity model of scattered solar radiation are constructed respectively; respectively constructing a sub-temperature field prediction model of direct solar radiation and a sub-temperature field prediction model of scattered solar radiation; and performing linear superposition on the sub-temperature field prediction model of the direct solar radiation and the sub-temperature field prediction model of the scattered solar radiation according to moments to obtain an indoor temperature field space-time distribution prediction result under the influence of dynamic solar radiation. The method fully considers the influence of the dynamic change of the solar radiation, can predict the influence rule of the solar radiation on the indoor temperature distribution in the time and space dimensions, and further obtains an accurate prediction result.

The invention relates to the field of aerospace thermal control, in particular to a star sensor light shield based on foam carbon and phase change materials, which comprises a foam carbon main body, and two phase change materials with different melting points are filled in pores of the foam carbon main body; the graphene film is co-cured on the outer surface of the foam carbon main body and completely covers the outer surface of the foam carbon main body; the heating sheets are adhered to the outer surface of the graphene film in the circumferential direction of the foam carbon main body to form different heating areas; the thermistors are adhered to the positions, corresponding to the heating areas, of the outer surface of the graphene film; the outer surface of the graphene film is covered with the multi-layer heat insulation assembly; and the temperature controller is used for adjusting the output power of the heating sheet by adopting a self-adaptive temperature control algorithm according to the temperature data acquired by the thermistor and the state of the phase change material, and controlling the temperature of the star sensor light shield within a preset temperature range. The direct solar radiation heat flow on the light shield can be effectively inhibited and dredged, and the high thermal stability control of the light shield is realized.

The invention provides a mounting bracket of a photovoltaic power generation panel and a photovoltaic power generation system, which are used for solving the problem that the mounting bracket of the photovoltaic power generation panel in the prior art cannot ensure that the photovoltaic power generation panel always faces the sun. Comprising a base, a rotation driving module and an angle adjusting module. The rotation driving module is arranged on the base, and the angle adjusting module is arranged on the rotation driving module; the photovoltaic power generation panel is mounted on the angle adjusting module; the rotation driving module is used for driving the angle adjusting module and the photovoltaic power generation panel to rotate relative to the base; the angle adjusting module is used for adjusting the inclination angle of the photovoltaic power generation panel relative to the base; the inclination angle of the photovoltaic power generation panel relative to the base is adjusted through the angle adjusting mechanism so as to ensure that the photovoltaic power generation panel can directly face the sun all the time in the daytime, on the other hand, the photovoltaic power generation panel is driven to rotate relative to the base through the rotary driving module so that the photovoltaic power generation panel can adapt to direct solar radiation points in different seasons, and the solar energy utilization rate is improved. And maximization of the efficiency of the photovoltaic power generation system is ensured.

The utility model belongs to the field of photovoltaic heat storage, and particularly relates to photovoltaic heat storage heating equipment which comprises a heat storage box. One side of the bottom end of the heat storage box is fixedly connected with one end of a connecting pipe, the other end of the connecting pipe is fixedly connected with a photovoltaic power generation panel, the photovoltaic power generation panel is electrically connected with a voltage conversion device and electrically connected with the heat storage box through a connecting cable, and an adjusting mechanism is arranged at the bottom end of the photovoltaic power generation panel. The adjusting mechanism comprises a connecting base, the top end of the connecting base is rotationally connected with the rear side of the bottom end of the photovoltaic power generation panel, a supporting base is arranged on the front side of the bottom end of the photovoltaic power generation panel, and a driving screw rod is rotationally connected to the position, close to the right side, of the front end of the connecting base; through the structural design of the adjusting mechanism, the function of adjusting the angle of the photovoltaic power generation panel according to the latitude of an installation area and the difference of direct solar radiation angles all the year round is achieved.

The invention relates to a photovoltaic array layout optimization method and device based on irradiation and shadow dynamic coupling, and the method comprises the steps: constructing a total irradiance model related to the inclination angle and azimuth angle of a photovoltaic module according to the direct solar radiation, scattered radiation and reflected radiation of the inclined surface of the photovoltaic module; calculating a shadow loss factor in combination with the critical unshielded spacing and the actual spacing of the front row and the rear row of the photovoltaic module array, and coupling the shadow loss factor to the total irradiance model to obtain an effective irradiance model; taking maximization of annual effective irradiance as an optimization objective, and constructing an optimization objective function based on an effective irradiance model; and by taking the inclination angle of the photovoltaic module, the azimuth angle of the photovoltaic module and the actual spacing as optimization variables, carrying out comprehensive balance optimization of dynamic irradiance income and shadow loss on the optimization objective function by adopting a fox-monkey optimization algorithm to obtain an optimal variable combination. According to the method, the core problems of large irradiation calculation error, shadow evaluation staticization and low optimization efficiency can be solved.

The invention provides a rotating device of a photovoltaic power generation panel and a photovoltaic power generation system. The rotating device is used for solving the problem that the photovoltaic power generation panel cannot directly face the sun all the time in the prior art. Comprising a mounting base, a first rotating module, a second rotating module and a third rotating module; on one hand, the inclination angle of the photovoltaic power generation panel relative to the mounting base in the length direction is adjusted through the first angle adjusting mechanism, so that the photovoltaic power generation panel can always face the sun in the daytime; and on the other hand, the first rotating module drives the photovoltaic power generation panel to rotate relative to the mounting base, and the third rotating module adjusts the inclination angle of the width direction of the photovoltaic power generation panel relative to the mounting base, so that the photovoltaic power generation panel adapts to direct solar radiation points in different seasons, and it is ensured that the efficiency of the photovoltaic power generation system can be maximized.

The invention discloses a building sunshade control method and system, and is applied to the technical field of sunshade equipment, and the method comprises the steps: determining a plurality of pieces of sunshade equipment and a plurality of indoor areas of a target building; for each piece of sunshade equipment, determining a plurality of control areas in the plurality of indoor areas according to the solar elevation angle, the solar azimuth angle and the window illumination value of each indoor area, and obtaining target control parameters of the sunshade equipment according to control parameters of each control area relative to the sunshade equipment; wherein the control area is an indoor area which is located in a direct solar radiation area and has a window illumination value larger than a preset illumination threshold value under the condition that solar rays directly enter a room of the target building; and according to the target control parameter of each piece of sunshade equipment, controlling each piece of sunshade equipment so as to shade each control area. According to the invention, cooperative sunshade control of a plurality of control areas and a plurality of sunshade devices is realized, and the sunshade control precision is improved.

The invention discloses a passive radiation-evaporative cooling composite coating and a preparation method thereof. The passive radiation-evaporative cooling composite coating comprises a radiation cooling film on the upper layer and hygroscopic hydrogel on the lower layer. The radiation cooling layer with high sunlight reflectivity and high and medium infrared emissivity provides all-weather radiation cooling and protects the hydrogel on the lower layer from direct solar radiation; and the hydrogel can be evaporated and cooled in the daytime and can absorb moisture at night to realize self-regeneration. The invention has the advantages of low cost of required raw materials, simple preparation and large-scale production. The prepared double-layer cooling material has excellent and adjustable optical properties, the temperature of the double-layer cooling material is reduced by more than 15 DEG C under the direct irradiation of sunlight in the daytime, and meanwhile, the double-layer cooling material has a hydrophobic surface. As a refrigeration technology without power consumption and emission, the method is expected to reduce energy consumption and carbon emission of traditional refrigeration, and can be widely applied to spontaneous cooling of the surfaces of devices and facilities.

The system of photovoltaic solar panels comprises a plurality of photovoltaic solar panels (3) arranged in parallel and spaced rows (2) in an open field (F), thereby enabling agricultural or animal husbandry use of the area of the field (F) between said rows (2). Each photovoltaic solar panel (3) is carried by a support structure, in which there is inserted a tracking device configured to rotate the photovoltaic solar panel (3) during a diurnal motion of the sun. Each photovoltaic solar panel (3) comprises an array of double-sided photovoltaic solar cells (C) having opposite sides (A, B) exposed on a first side and a second side of the photovoltaic solar panel (3), respectively, to collect both direct solar radiation and diffused solar radiation. The tracking device is configured in such a way that the angle of inclination formed between the plane of each photovoltaic solar panel (3) and a vertical plane parallel to the longitudinal direction of the row (2) never exceeds a value of 45 DEG throughout the entire duration of the solar diurnal movement, unless at a temporary stage of the zenith of the sun, in which stage the solar panel (3) is positioned in the vertical direction of the row (2). The photovoltaic solar panel (3) is turned over within a period of time of no more than one hour. In this manner, the panel is controlled to move between a vertical position and a relatively close vertical position throughout the duration of the apparent motion of the sun, such that the projection of the photovoltaic system onto the ground is always minimized.

The invention discloses a reservoir invalid evaporation ecologicalization inhibition system suitable for a pumped storage power station, which comprises a plurality of floating units, and the plurality of floating units are mutually connected to float and cover the water surface of a reservoir; the photovoltaic panels are mounted on the upper portions of the floating units correspondingly; the floating ball floats on the water surface of the reservoir, and the floating ball is arranged in gaps among the plurality of floating units. The solar photovoltaic panels are laid on the water surface of the reservoir to prevent direct solar radiation on the water surface, water surface evaporation is reduced, water surface evaporation of the reservoir is reduced, rubber balls are adopted to float on the water surface along the periphery of the reservoir bank and local photovoltaic panel gaps, direct solar radiation is further shielded, water surface evaporation is reduced, the defects of an existing method can be overcome, and the water surface evaporation is reduced. And huge economic and social benefits can be generated.

The present invention discloses a real-time calibration method for the scattering channel of a spectroradiometer based on direct solar irradiance, which includes: obtaining the calibration values of the entire wavelength band of the direct channel of the spectroradiometer through a hybrid calibration method that combines the Langley calibration method in the non-absorbing wavelength band and the theoretical calculation of the solar irradiance at the top of the atmosphere in the strong absorption wavelength band; accurately obtaining the spectral irradiance reaching the optical acquisition system of the radiometer and the atmospheric transmittance through the calibration of the direct channel; using the measured direct solar radiation passing through the atmosphere and the atmospheric transmittance in real time, combining the solar irradiance at the top of the atmosphere and the optical component parameters of the instrument to obtain the real-time calibration values of the entire wavelength band of the scattering channel. Without using other auxiliary materials, the present invention transfers the calibration of the direct channel of the spectroradiometer to the calibration of the scattering channel, and will be applied to devices that simultaneously measure direct solar light and atmospheric scattered light.

The utility model relates to the technical field of teaching aids, and discloses a day and night alternation demonstration instrument, which comprises an earth shaft, an earth model, a clamping seat and a base, one end of the earth shaft is connected with the earth model, the other end of the earth shaft is connected with a circular ring, an earth shaft connecting hole is arranged in the circular ring, the upper hole is deeper, and the lower hole is shallower. During connection, the ground shaft is inserted into the upper hole firstly and then inserted into the lower hole, the top and the bottom of the circular ring are connected with the two ends of the sunlight perpendicular incidence plate through connecting rods, circular ring connecting holes are formed in the sunlight perpendicular incidence plate, the upper hole is deeper, the lower hole is shallower, the ground shaft is inserted into the upper hole firstly and then inserted into the lower hole during connection, and parallel light rays are marked on the front face and the back face of the sunlight perpendicular incidence plate. The center line of the parallel light rays is marked with a direct solar radiation point, a groove in the bottom of the direct solar radiation plate is connected with a groove in the top of the clamping base, the direct solar radiation plate and the clamping base are connected with the base, the first day and night plate is connected with the base, and the second day and night plate is connected with the base. The demonstration instrument is convenient to disassemble and assemble and has interestingness.

The invention relates to an intelligent building coating capable of preparing a film with temperature discoloration response and radiation refrigeration functions and a preparation method of the intelligent building coating. Intelligent discoloration of the appearance of a building, visual judgment of the temperature of the building and reduction of the refrigeration energy consumption of the building are achieved. The coating disclosed by the invention is prepared from the following components in percentage by mass: 5 to 15 weight percent of montmorillonite, 5 to 15 weight percent of silicon oxide microspheres, 5 to 15 weight percent of silver tetraiodo-mercurate, 10 to 30 weight percent of polymer with transparent visible spectrum or high infrared emission spectrum emission, 0 to 5 weight percent of functional additive and 30 to 50 weight percent of solvent. The reflectivity of the radiation refrigeration function layer in a solar spectrum waveband area is larger than or equal to 0.87, the emissivity of the radiation refrigeration function layer in the 8-12-micron waveband of an atmospheric window is larger than or equal to 0.81, the refrigeration efficiency under the direct solar radiation condition is larger than or equal to 80 W / m < 2 >, and the film is light yellow and reddish brown at the temperature of 50 DEG C or below so that visual judgment of the building temperature can be achieved. The preparation method provided by the invention is simple in process, the refrigeration energy consumption of the building can be effectively reduced, the building is endowed with good aesthetic characteristics, and the energy efficiency and living suitability of the building can be improved.

The invention discloses angle-adjustable photovoltaic power generation equipment for new energy power generation, and relates to the technical field of photovoltaic power generation, the angle-adjustable photovoltaic power generation equipment comprises a base, the inner side surface of the base is rotatably connected with a scissor fork mechanism, the inner side surface of the scissor fork mechanism is fixedly connected with a lifting assembly, and the lifting assembly is used for lifting adjustment of the scissor fork mechanism. And the windproof mechanism is rotationally mounted at the top of the scissor fork mechanism. According to the angle-adjustable photovoltaic power generation equipment for new energy power generation, the purpose that the sun rises in east and falls in west is achieved, in the device, the angle between the solar panel and the ground changes along with the change of the direct solar radiation angle, the rotation angle range of the solar panel is large, hydraulic control is replaced with a simple mechanical structure, and the power generation efficiency is improved. The arrangement of a plurality of worm gears and a meshing assembly enables the second screw rod sliding table to be more stable during rotation, the use efficiency of the device can be effectively improved, and the problems that a rotation angle adjusting structure of the solar panel is too complex and is difficult to apply in batches are solved.

The utility model provides a photovoltaic assembly installation device. The photovoltaic assembly installation device comprises an installation frame used for installing a photovoltaic assembly and a scraping mechanism used for cleaning the photovoltaic assembly. The scraping mechanism is connected with the mounting frame; the scraping mechanism comprises a support and a transverse frame, the support is arranged on the mounting frame, the transverse frame is connected with the support, and a cleaning object is arranged on the transverse frame. The photovoltaic module is cleaned by arranging the scraping mechanism, so that dust adhered to the surface of the photovoltaic module is cleaned, the direct solar radiation rate is improved, and the purpose of improving the power generation efficiency is achieved.

The invention relates to the field of agricultural information, and discloses a crop light energy capturing capability determination method and system based on spectral analysis under canopy, a medium and equipment, and the method comprises the following steps: collecting a direct solar radiation spectrum and a transmission spectrum under the canopy of a crop in a space-time synchronization mode; preprocessing the collected spectral data, analyzing and determining the light energy capturing capability of the crop canopy, and performing accurate quantitative evaluation on the photosynthetic capability of the crop through the light energy capturing capability. According to the invention, the limitation of traditional single-point acquisition can be broken through, and non-destructive and real-time photosynthetic potential monitoring is realized.

The invention discloses a polar axis type solar direct radiation spectrum measurement method and system, belongs to the technical field of solar direct radiation spectrum measurement, and aims to solve the problems that an existing measurement system depends on complex double-axis tracking, has many errors, is high in maintenance cost and is insufficient in latitude adaptability. The system comprises a polar axis rotating reflector and a solar spectrum measurement system, the polar axis rotating reflector directly radiates and reflects the sun with the solar elevation angle of + / -23.5 degrees and the solar azimuth angle of + / -90 degrees to the measurement system, and measurement is achieved in combination with a spectrum reconstruction model. The spectral resolution is superior to 2 nm, the single-point error ranges from-6.83% to 6.61%, the area error ranges from-0.03% to 0.05%, the space-time uniformity is larger than or equal to 99.92%, the structure is simplified, all-year-round all-latitude high-precision measurement without moving tracking is achieved, and the method is suitable for the fields of solar energy development, climate change research and the like.

The invention relates to the technical field of distributed photovoltaic power prediction, and discloses a CNN-SENet-Transfomer distributed photovoltaic ultra-short-term power prediction method based on an energy storage control strategy, and the method comprises the following steps: S1, carrying out the analysis of the influence factors of distributed photovoltaic power; selecting total solar radiation, direct solar radiation, scattered solar radiation and historical power as important characteristic factors; s2, constructing a CNN-SENet-Transfomer prediction model, connecting the CNN model, the SENet model and the Transfomer model in series, realizing weight dynamic adjustment of different total solar radiation, direct solar radiation, scattered solar radiation and historical power, and outputting predicted power; s3, predicting a model training optimization process; and S4, correcting the deviation of the predicted power curve. Accurate prediction of the distributed photovoltaic power station is realized by dynamically adjusting the weights of the historical meteorological features and the historical distributed photovoltaic power and highlighting important features, and finally the predicted power is corrected through the energy storage battery, so that the proportion of distributed photovoltaic access to the power grid is increased, and safe and stable operation of the power grid can be guaranteed.

The invention provides a photovoltaic panel solar radiation quantity prediction method and device. The method comprises the steps of collecting a sky image and synthesizing the sky image into an HDR image; analyzing sky radiation information according to the HDR image; establishing a real-time sky model according to the sky radiation information; and calculating the incident radiation quantity of the photovoltaic panel, wherein the incident radiation quantity of the photovoltaic panel comprises direct solar radiation, sky scattering radiation and ground reflection radiation. According to the photovoltaic panel solar radiation quantity prediction method and device provided by the invention, the prediction of the solar radiation quantity of the photovoltaic panel in a complex shielding environment is realized, and the defect that an ideal sky model cannot describe an actual external environment is effectively avoided by constructing a shielding-oriented high-resolution sky radiation field; through fusion of the HDR image and the real-time sky model and in combination with the shielding relationship, the distribution accuracy of the incident radiation on the surface of the photovoltaic panel in time and space dimensions is improved.

The invention discloses a water resource recycling method for an arid region, which belongs to the technical field of water resource recycling and comprises the following steps of S1, site selection and laying, S2, installation and butt joint, S3, planting, S4, working, S5, backflow and S6, maintenance. By recycling moisture-containing air generated during transpiration of sea-buckthorn crops planted in a greenhouse and moisture-containing air generated by evaporation of internal moisture of external sandy soil through direct solar radiation in the daytime, the problem of water resource shortage in arid regions can be effectively relieved, and agricultural development in the arid regions can also be supported. Meanwhile, due to the fact that the arid region is windy and dusty, the greenhouse can serve as a barrier to block the windy and dusty sand and reduce the damage of the windy and dusty sand, in addition, due to artificial planting of the hippophae rhamnoides, excessive collection of the wild hippophae rhamnoides is effectively reduced, and ecological balance is protected.

The application relates to a photovoltaic array layout optimization method and device based on irradiation and shadow dynamic coupling, and the method comprises the following steps: constructing a total irradiance model about a photovoltaic component inclination angle and a photovoltaic component azimuth angle according to direct solar radiation, scattering radiation and reflected radiation of the inclined surface of the photovoltaic component; calculating a shadow loss factor by combining a critical unshaded spacing and an actual spacing of front and rear rows of the photovoltaic component array, and coupling the shadow loss factor to the total irradiance model to obtain an effective irradiance model; constructing an optimization objective function based on the effective irradiance model by taking the maximization of annual effective irradiance as an optimization objective; and adopting the lemur optimization algorithm to perform comprehensive balance optimization of dynamic irradiance benefits and shadow losses on the optimization objective function by taking the photovoltaic component inclination angle, the photovoltaic component azimuth angle and the actual spacing as optimization variables to obtain an optimal variable combination. The application can solve the core problems of large irradiation calculation error, static shadow evaluation and low optimization efficiency.

System of photovoltaic solar panels includes solar panels arranged in rows in an open field to facilitate agricultural or pastoral use of areas of the field between the rows. Each solar panel is carried by a support structure, with interposition of a tracking device for rotating the solar panel during an apparent diurnal motion of the sun. Each solar panel includes an array of double-sided photovoltaic solar cells having opposite sides exposed respectively on first and second faces of the solar panel, to collect both direct solar radiation and diffuse solar radiation. The tracking device is configured such that, for the entire duration of the apparent diurnal motion of the sun, the inclination angle formed between the plane of each photovoltaic solar panel and a vertical plane parallel to the longitudinal direction of the row never exceeds the value of 45°, except for a temporary phase at the solar zenith.

The invention relates to a building radiation refrigeration ceramic tile taking industrial silicon slag as a raw material and a preparation method thereof. The ceramic is prepared by molding industrial silicon slag powder with the particle size of more than or equal to 100 meshes at room temperature and sintering at high temperature. The sintered ceramic is of a porous structure and mainly comprises silicon oxide and silicate. The porous structure has a strong Mie scattering effect on a solar spectrum and does not absorb solar spectrum energy, silicon oxide and silicate components have strong infrared radiation characteristics in an atmospheric window, and the ceramic tile has a radiation refrigeration function by combining the two mechanisms. When the ceramic tile is used for building exterior wall decoration, building refrigeration energy consumption can be effectively reduced. According to the radiation refrigeration ceramic tile, the sunlight spectrum wave band reflectivity is larger than or equal to 0.85, the 8-12 micron wave band emissivity in an atmospheric window is larger than or equal to 0.82, the refrigeration efficiency under the direct solar radiation condition is larger than or equal to 83 W / m < 2 >, and the refrigeration temperature difference of 6.2 DEG C is achieved. Theoretical calculation shows that in the typical environment of the Nanchang city, by using the ceramic tile, the refrigeration energy consumption can be saved by more than or equal to 16 MJ / m < 2 > all year round. According to the invention, high-value utilization of the industrial silicon slag can be realized, and the prepared building radiation refrigeration ceramic tile has good application potential in the field of reduction of building energy consumption, so that the purpose of sustainable and green social development is achieved.

The utility model discloses a crane cooling mechanism of a gantry bridge crane, and belongs to the technical field of gantry bridge cranes. A lifting appliance is arranged at the top of the vehicle body, a motor is fixed at the top of the vehicle body, and a motor driving end is in transmission connection with a power receiving end of the lifting appliance; a supporting plate is fixed to the outer wall of the vehicle body, a protective shell is slidably connected to the top of the supporting plate, a reflective heat insulation coating is arranged on the top of the protective shell, two rows of symmetrical ventilation grids are arranged on the outer wall of the protective shell, an opening is formed in one end of the protective shell, the protective shell covers the motor through the opening, and a fan is fixed to one end of the protective shell. According to the utility model, when the motor of the vehicle body operates in a hot day with direct solar radiation outdoors, the protection shell is utilized to increase the heat dissipation capability for the motor, and the cooling and heat dissipation efficiency is greatly improved.

Solar thermal collectors primarily utilize direct solar radiation and minimize convective heat exchange with the environment. This has the advantage of allowing high temperatures, far exceeding the ambient temperature, to be achieved. A disadvantage is that the heat from the ambient air cannot be utilized, even when there is no direct solar radiation. According to the invention, this disadvantage is overcome by providing the housing containing the actual collector, through which the heat transfer medium flows, with at least two openings. These openings are tightly closed by flaps or similar devices when direct solar radiation is sufficiently high, but can be opened when needed, i.e., when direct solar radiation is low, allowing air to flow over the actual collector, either by natural draft or driven by a fan.The opening and closing of the flaps or similar devices, and the operation of any fan (if present), are controlled by a system that calculates and compares the heat gain from direct solar radiation and airflow, and reacts accordingly by switching the fan on or off and opening or closing the flaps. A further control system, depending on the temperature of the heat transfer medium and the hot water in the storage tank, as well as the heating demand, determines whether the heat transfer medium is used to further heat the hot water in the storage tank or to power a heat pump.

The present invention relates to a hybrid prediction model for direct irradiance based on multi-feature extraction of ground-based cloud maps, which combines knowledge-based cloud detection with an improved deep convolutional neural network. The extracted global features and local features are used as inputs to the feature fusion and irradiance prediction module, together with the solar altitude angle as input data. The features are comprehensively processed through a multi-layer fully connected network, thereby learning the complex relationship between the features; finally, the predicted value of direct irradiance is given through the regression output layer. The present invention fully considers and addresses the problem of direct solar radiation prediction under complex meteorological conditions. Through the joint extraction of global and local features, the model can more comprehensively describe the cloud characteristics, thereby achieving high-precision irradiance prediction; experimental results verify the effectiveness and superiority of the present invention, especially under complex and changeable weather conditions, showing high prediction accuracy and stability.

The invention provides a visual satellite optical load direct solar radiation stray light determination method and system. The method comprises the following steps: calculating a solar zenith angle and a solar azimuth angle in a satellite illumination change period; constructing a sun vector aggregate according to the sun vectors in the solar zenith angle and the solar azimuth angle range; moving the sun vector aggregate to a point to be determined on the load; and judging whether the sun vector aggregate intersects with the satellite body or not, and if a part which does not intersect with the satellite body exists, judging that the part is influenced by direct solar radiation stray light. According to the visual satellite optical load direct solar radiation stray light judgment method, whether the satellite optical load is influenced by direct solar radiation stray light in orbit or not can be quickly and visually judged.

The invention is suitable for the technical field of marine fishery, and discloses monitoring equipment for marine fishery. The device aims to solve the technical problem that in the prior art, fish school monitoring limitation is large, the device comprises a lower shell and an upper shell, the lower shell and the upper shell are fixed together, a monitoring assembly is installed on the lower shell, and an air cavity system is arranged in the upper shell and the lower shell; according to the device, seawater is decomposed to generate water-insoluble gas for gas filling of the whole gas cavity system, the whole gas cavity system can be used for changing the buoyancy of the whole device, the buoyancy of the device can be automatically increased after the electricity of the device is used up, and the device can be used for water-insoluble gas filling of the whole gas cavity system. The equipment floats to the sea surface and is charged through direct solar radiation, and after charging is completed, the equipment can be automatically deflated, buoyancy of the equipment is reduced, the equipment enters the seabed again and suspends, and the growth condition and distribution of seabed fish schools are flexibly monitored.

The invention discloses a polar axis rotation type solar direct radiation spectrum measurement system and method, and belongs to the technical field of solar radiation measurement, the system comprises a solar direct radiation focusing free-form surface reflecting mirror and a solar spectrum measurement optical system, the effective reflection focusing half angle of the reflecting mirror is 2.5 degrees, and the effective reflection focusing half angle of the reflecting mirror is 2.5 degrees. A 52-degree * 5-degree field-of-view direct light beam can be converged to a system slit, and the system is constructed and optimized based on a polar axis principle, so that the irradiance uniformity and the light spot overlap ratio are ensured. The spectral measurement system adopts a crossed Czerny-Turner structure, the working spectrum band is 380-780 nm, and the spectral resolution is lt; the RMS radius is 1t, 2nm; 6 [mu] m; the system further comprises a self-adaptive sampling space-time spectrum radiation intensity reconstruction link, errors are compensated through uniform and dynamic sampling, the WMO requirement is met, the global latitude does not need to be frequently aligned and tracked all year round, the measurement precision is high, and the reliability is high.

The invention discloses a solar direct radiation simulation system based on grating inverse dispersion, and aims to solve the bottleneck that the irradiance and the solar field angle of a traditional system are mutually restricted and cannot be matched with AM0G / AM1.5 G double spectrums at the same time. The system comprises a spectrum modulation optical engine, a diffraction beam combination system and a multi-aperture imaging type reconstruction system which are coaxially arranged in sequence. The solar field angle reaches 28.8 ', the working condition irradiance of AM0G / AM1.5 G is 1450.54 W / m, the working condition irradiance of AM0G / AM1.5 G is 1398.80 W / m, spectrum matching and non-uniformity both meet the IEC60904-9: 2020A + level, and the method can be used in the fields of spacecraft testing, solar energy conversion and the like.