28 results about "Overcast sky" patented technology

The invention relates to the technical field of bionic navigation orientation and positioning, in particular to a carrier course angle measuring method based on polarized light imaging in a non-Rayleigh atmosphere. Comprising the steps of real-time sky polarized light imaging, atmospheric polarization mode resolving based on Mueller matrix imaging, non-Rayleigh polarization information interference removal, polarization orientation resolving based on Rayleigh scattering, space projection conversion and sun position information resolving. Alignment information of the sun in a carrier coordinate system is obtained by utilizing a Rayleigh scattering model and actual sky polarization imaging, and then a carrier course angle is obtained according to the orientation of the sun in a local geographic coordinate system, so that an orientation function is realized; meanwhile, the error influence caused by image registration and time-sharing rotation measurement of the multi-view-field polarization detector and the interference of environmental factors on a single point are avoided, the method can adapt to sunny and cloudy weather, is also applicable to cloudy and other non-Rayleigh weather, and is wide in application range.

A self-adaptive dynamic sunshade PV skylight is provided with a window body assembly of a hollow cavity structure, the window body assembly is composed of an outer side glass slide and an inner side glass slide, and a thermochromic layer is arranged on the inner surface of the outer side glass slide and used for automatically reducing the light transmittance when the environment temperature rises so as to achieve passive sunshade. An electrically controllable optical layer is arranged on the outer surface or the inner surface of the inner side glass slide and is used for realizing active and partitioned optical performance adjustment under the driving of the controller and acquiring environmental parameters such as external illumination intensity, incident angle, indoor temperature and humidity and cavity condensation risk in real time. The strip-shaped micro photovoltaic array is arranged on the edge of the window frame, the segmented bypass wiring and the weak light MPPT technology are combined, solar energy can still be efficiently collected even in the local shielding or cloudy day low-illumination environment, and it is ensured that the system stably runs for a long time under the condition that no external power source is connected in cooperation with the super-capacitor energy storage unit.

The invention belongs to the technical field of energy optimization of a traditional thermal power plant, and discloses a thermal power auxiliary engine system based on wind and light direct drive and an energy efficiency improving method thereof. The wind-solar direct-drive auxiliary engine is preferentially adopted to operate in the daytime, redundant power is used for energy storage, the compressed air energy storage system supplies power at night or in cloudy days, and peak load shifting of energy is achieved; the central control system dynamically adjusts an energy supply structure and a power distribution strategy based on a meteorological prediction model, historical load data of the auxiliary machine and a real-time state, so that new energy resources are utilized to the greatest extent while stable operation of the auxiliary machine is ensured, and coal consumption reduction and power plant energy efficiency improvement are realized. According to the invention, the ratio of coal consumption to station service power of the auxiliary machine is obviously reduced, the utilization rate of wind power and photovoltaic power generation is improved, and flexible scheduling and high frequency response of operation of the auxiliary machine are realized.

The invention relates to a multi-area coupled vehicle body integrated solar power generation system and method, the system comprises a vehicle body top cover, an engine hood and vehicle door glass, the vehicle body top cover is provided with a transparent skylight and an illumination sensor, and the engine hood is provided with a heat insulation layer, a heat dissipation device and a temperature sensor; and the solar module comprises a transparent perovskite laminated cell which is coupled on the transparent skylight in a partitioned manner, a CIGS thin film cell on the engine hood and a dye-sensitized cell on the automobile door glass. According to the transparent perovskite laminated cell, the flexible substrate can be adopted, the bendable and foldable design can be achieved, the cell is suitable for an electric vehicle roof and the like, the wind resistance coefficient is reduced, a semitransparent or colored cell can be prepared by adjusting the thickness and the band gap of the perovskite layer, and the aesthetic requirement of the vehicle roof is met; the light absorption coefficient is high, high power generation efficiency can still be kept in cloudy days or under the indoor weak light condition, the temperature coefficient is close to zero, and the efficiency loss in the high-temperature environment is extremely small.

A method comprises measuring a light intensity at a window; determining if the light intensity exceeds a cloudy-day threshold; operating in a sunlight penetration limiting mode to control the motorized window treatment to control the sunlight penetration distance in the space; enabling the sunlight penetration limiting mode if the light intensity is greater than the cloudy-day threshold; and disabling the sunlight penetration limiting mode if the total lighting intensity is less than the cloudy-day threshold. The cloudy-day threshold is maintained at a constant threshold if a calculated solar elevation angle is greater than a predetermined solar elevation angle, and the cloudy-day threshold varies with time if the calculated solar elevation angle is less than the predetermined solar elevation angle. The cloudy-day threshold is a function of the calculated solar elevation angle if the calculated solar elevation angle is less than the predetermined solar elevation angle.

The invention relates to the technical field of photovoltaic modules, in particular to a high-reflectivity one-way light-transmitting film and a preparation method and application thereof.The high-reflectivity one-way light-transmitting film comprises an adhesive layer, a metal coating, a base material layer and a nano-particle scattering layer which are sequentially arranged; the nano-particle scattering layer is prepared from the following raw materials in parts by weight: 50-70 parts of hydroxy acrylic resin, 8-15 parts of nano-scattering particles, 0.3-1 part of a dispersing agent, 10-25 parts of deionized water and 3-7 parts of a curing agent, and the nano-particle scattering layer is arranged on the surface and is matched with other film layers, so that the surface of the nano-particle scattering layer is coated with the nano-particle scattering layer; the problem that the light energy utilization rate is poor under the condition of low-light environments (such as high-latitude areas, cloudy days, morning or evening) is effectively solved, and the actual application requirements are better met.

The utility model discloses an airing device and a clothes airing machine, which are characterized in that a controller is used for reading time information of a clock module, generating a brightness control signal, a color temperature control signal and an air supply signal according to the time information and outputting the signals to a brightness adjusting module, a color temperature adjusting module and an air supply module, and the brightness adjusting module is used for adjusting the brightness of a lamp. The color temperature adjusting module is used for adjusting the color temperature of the lamp, so that sunlight at different time is simulated, meanwhile, the air supply module is used for accelerating air drying of clothes, airing of real sunlight can be simulated in cloudy days or rainy days, and the clothes airing effect is improved.

The application discloses a cloud condition automatic identification and daily scale weather classification method based on ground photosynthetically active radiation real-time monitoring, acquires flux site data and site basic information, calculates the solar zenith angle of a corresponding moment according to the longitude and latitude and time of the site; according to the longitude and latitude and time information of the site, the physical relationship between the solar zenith angle and the photosynthetically active radiation is utilized, the data in the daytime is selected for fitting, and a theoretical clear sky radiation reference model is constructed; based on the fitting result of the clear sky radiation reference model, the absolute error, the relative error and the correlation coefficient between the observed photosynthetically active radiation and the fitting value are calculated, and triple error characteristics are constructed; according to the error characteristics and the photosynthetically active radiation fitting curve form, the radiation sample at each moment is divided into'sunny' and 'cloudy' types; the proportion of the clear sky sample in the effective radiation observation period is counted, and the cloud condition automatic classification from hour to day scale is realized. The application can automatically distinguish sunny day, cloudy day and typical conditions such as overcast without relying on a sky camera or external meteorological data, and provides a scientific basis for ground flux observation, ecological process simulation and other researches.

The invention discloses a cloudy day mode trigger control method and a cloudy day mode trigger control system for a photovoltaic tracking assembly. The cloudy day mode trigger control method comprises the following steps: acquiring global horizontal irradiation dose GHI, a solar zenith angle Zenth and a solar constant; according to the GHI and the Zenth sum, calculating to obtain a clearness index, and according to the clearness index, calculating to obtain a scattering irradiation amount ratio; according to the GHI, calculating to obtain a scattering irradiation dose DHI; according to the DHI, the GHI and the Zenth, the direct irradiation dose DNI is obtained through calculation; according to the GHI, the DHI and the DNI, calculating to obtain a total irradiation amount POA received by a photovoltaic tracking assembly plane; and comparing the POA with the GHI, and carrying out cloudy day mode triggering judgment on the photovoltaic tracking module according to a comparison result. The problem that in an existing cloudy day mode triggering judgment method based on the GHI threshold value, under the sunrise or sunset or other low-irradiation conditions, the GHI is smaller than the threshold value, and misjudgment is caused is solved.

The invention relates to a heat transfer fluid heat collecting pipe and a solar heat collecting device, the heat transfer fluid heat collecting pipe comprises an outer pipe, an inner pipe and a phase change heat storage device, an incident part and a non-incident part are distributed on the pipe wall of the outer pipe in the circumferential direction, and the incident part is transparent so that incident light can penetrate through the incident part; the inner pipe is arranged in a pipe cavity of the outer pipe, and a transparent heat preservation structure is formed between the inner pipe and the outer pipe. The phase change heat storage device comprises a device body and a phase change heat storage medium, the position, corresponding to the non-incident part, of the device body is in heat conduction fit with the inner pipe, and the phase change heat storage medium is arranged in the device body in a sealed mode. According to the phase change heat storage device in the heat transfer fluid heat collection pipe, the stored heat is transferred to the heat transfer fluid in the inner pipe through the inner pipe, so that the problem that the heat transfer fluid in the inner pipe is easily condensed, frozen and blocked in cloudy days or at night is relieved or avoided, and the reliability and stability of the whole system are improved.

Method for positioning a single-axis solar tracker during overcast periods, comprising using a radiation-detecting sensor in the vicinity of the single-axis solar tracker to measure values of global horizontal irradiance (GHI) of the sun during a time interval; determining an estimation of a diffuse horizontal irradiance (DHIapx) based on measured values of global horizontal irradiance (GHI); determining an estimation of a global tilted irradiance (GTIapx) also based on measured values of global horizontal irradiance (GHi); comparing the diffuse horizontal irradiance (DHIapx) with the global tilted irradiance (GTIapx); and obtaining a maximum tracking angle (p) based on said comparison, such that when the diffuse horizontal irradiance (DHIapx) is greater than the global tilted irradiance (GTIapx) the rotation of the single horizontal axis (10) is limited to the maximum tracking angle (p).

This invention relates to the field of water purification technology, and in particular to a photocatalytic treatment device and method for microplastics in water based on solar tracking. The device includes a photocatalytic membrane module, a focusing module, a supplementary lighting unit, a light intensity sensor, a flow sensor, a transmembrane pressure differential sensor, a reaction vessel module, and a controller. By setting up a Fresnel lens and a dual-axis light tracker, it can make full use of moving sunlight, improve the utilization rate of sunlight, and the supplementary lighting unit only starts when natural light is insufficient and actual pollution accumulation reaches a threshold. The duration is precisely calculated based on material balance, which can significantly reduce the working time of the supplementary lighting, reduce energy consumption, and prevent the photocatalytic membrane module from being blocked and thus reducing its capacity attenuation even on continuous cloudy days, thereby extending the service life of the photocatalytic membrane module.

The invention relates to the technical field of tower-type photo-thermal power generation, in particular to a tower-type photo-thermal heliostat calibration method based on unmanned aerial vehicle aerial survey and image analysis, which comprises three steps of unmanned aerial vehicle calibration and data acquisition, image analysis and deviation calculation, and regression analysis and parameter calibration, under the condition of night or cloudy days, the deviation between the actual normal direction and the theoretical value of the heliostat is calculated through the red LED marker lamp and the offset of the reflected light spots; and fitting multi-point data by using a least square method, separating an azimuth pitching initial angle deviation and a stand column inclination angle deviation, and realizing automatic compensation. The tower-type photo-thermal heliostat calibration method is efficient, high in precision and flexible through organic combination of aerial survey of the unmanned aerial vehicle and the image analysis technology, the limitation that a traditional correction method depends on sunlight is solved, the calibration efficiency and precision are remarkably improved, and the tower-type photo-thermal heliostat calibration method has important technical significance and wide application prospects.

A method comprises measuring a light intensity at a window; determining if the light intensity exceeds a cloudy-day threshold; operating in a sunlight penetration limiting mode to control the motorized window treatment to control the sunlight penetration distance in the space; enabling the sunlight penetration limiting mode if the light intensity is greater than the cloudy-day threshold; and disabling the sunlight penetration limiting mode if the total lighting intensity is less than the cloudy-day threshold. The cloudy-day threshold is maintained at a constant threshold if a calculated solar elevation angle is greater than a predetermined solar elevation angle, and the cloudy-day threshold varies with time if the calculated solar elevation angle is less than the predetermined solar elevation angle. The cloudy-day threshold is a function of the calculated solar elevation angle if the calculated solar elevation angle is less than the predetermined solar elevation angle.

The application discloses an infrared lamp adjusting circuit, a law enforcement recorder and a control method of an infrared lamp. The infrared lamp adjusting circuit comprises an infrared lamp assembly, an ambient light detection circuit, a distance detection circuit and an infrared lamp control circuit. The ambient light detection circuit is used for detecting the light intensity in the environment and outputting a light intensity detection signal. The distance detection circuit is used for detecting the distance between a measured target and the infrared lamp assembly and outputting a distance detection signal. The infrared lamp control circuit is connected with the ambient light detection circuit and the distance detection circuit respectively. The infrared lamp control circuit is used for outputting a control signal to control the operation of the infrared lamp assembly and adjusting the brightness of the infrared lamp assembly according to the light intensity detection signal and the distance detection signal. The application aims at solving the problem that the infrared lamp cannot automatically adjust the brightness of the infrared lamp and always works with high power consumption in different scenes (for example, overcast day, night, early morning or evening or indoor or outdoor).

The invention belongs to the technical field of energy management equipment, and discloses an intelligent monitoring system and method for optical heat storage cooperation of a zero-carbon well site of an oil field, and the system achieves the accurate distribution and time sequence optimization of energy through the unified scheduling and fusion analysis of photovoltaic, energy storage and photo-thermal through an energy management system. Photovoltaic power is preferentially consumed when sunlight is sufficient, the energy storage system supplies power at night or in cloudy days, the intermittent problem of renewable energy sources is effectively solved, and clean energy sources are utilized to the maximum extent; according to the invention, unified scheduling and fusion analysis are carried out on photovoltaic, energy storage and photo-thermal through the energy management system, and accurate distribution and time sequence optimization of energy are realized. The photovoltaic power is preferentially consumed when sunlight is sufficient, the energy storage system supplies power at night or in cloudy days, the intermittent problem of renewable energy sources is effectively solved, clean energy is utilized to the maximum extent, dependence of an oil field well site on a traditional power grid and fossil energy is remarkably reduced, and zero-carbonization operation is achieved.

The invention discloses a photovoltaic equipment light following compensation system based on a reflector, which comprises an intelligent dynamic tracking compensation system, a light following positioning system, light following compensation equipment and photovoltaic panel equipment, and is characterized in that the intelligent dynamic tracking compensation system acquires sunlight angle information of the light following positioning system in real time; and the intelligent dynamic tracking compensation system acquires illumination data, real-time output current, output voltage and output power of the photovoltaic panel, and local temperature, local humidity, local wind direction and wind power data in real time, and dynamically adjusts the reflector through analysis and processing. Compared with the prior art, a fusion path of'fixed photovoltaic panel equipment and an intelligent light following compensation technology 'is adopted, the system has obvious illumination compensation capability on fixed photovoltaic, has the most obvious gain effect under the condition of weak light, can realize stable power generation gain, and expands the application capability of the system under weak light scenes such as cloudy days and nightfall.

A method of determining and responding to an overcast sky condition during daylight hours in a solar tracker installation utilizing a single, fixed-position irradiance sensor associated with a set of solar tracker assemblies of the solar tracker installation and, if a series of irradiance levels communicated by the irradiance sensor to an array controller of a solar tracker control system of the installation indicates that an overcast sky condition has been present for a predetermined overcast sky duration period, the array controller transmitting control signals to a set of solar tracker controllers associated with the set of solar tracker assemblies to deviate from a normal solar tracking mode to an overcast sky mode by pivoting respective tables of the associated set of solar tracker assemblies to one or more predetermined overcast sky condition angles of inclination, and a solar tracker control system for implementing the foregoing method.

To provide a standard time sundial with a sunlight auxiliary function, which does not require correction of time difference due to differences in latitude and longitude or change of shape, can display standard time, and enables time to be confirmed by using auxiliary lighting even when sunlight is reduced or absent. [Solution] The sundial 10a is made from a transparent material and has a translucent time display section 13a. By making it cylindrical or polygonal, the time can be checked from the front of the main body or from the reverse side, which is 180° opposite. Because it can be made hollow, it can also be used as a storage box, pen holder, etc. By tilting the main body of the sundial and making the position of the time display section, which incorporates the curves of the gnomon and analemma, adjustable, it is possible to check standard time regardless of changes in the latitude and longitude of the installation location. By providing a lighting mechanism to illuminate or display the shadow and light point of the gnomon in a way that supplements sunlight, it can be used in areas with shade, cloudy days, at night, or polar night.

The present invention discloses a coating reflectance test device and method, which defines a test space inside a test box that can surround a light source, a test board bracket and a test instrument, and a matte material layer is provided on the wall of the test space, so that the test space is not affected by the external environment, and the light source simulates the cloudy natural light conditions, which has the following advantages: 1. Only a test board with a tested coating on the surface needs to be prepared, and there is no need to process the environment (for example, there is no need to coat the tested coating on the wall of the test space), and it can be used repeatedly, thereby greatly reducing the test cycle and test cost; 2. After the test space is closed, it is not affected by the external environment, and the light source can accurately and stably simulate the cloudy natural light that meets the conditions, thereby ensuring the test accuracy. 3. The entire test device can be made relatively small and easy to move, and the time and place of use are not restricted, so the purpose of testing can be achieved anytime and anywhere.

The utility model discloses a multi-angle identification look-around device which comprises a look-around equipment shell, one side of the surface of the look-around equipment shell is connected with a fixed machine shell, a fixed auxiliary camera is connected in the fixed machine shell in a clamped mode, one side of the fixed machine shell is provided with a first screw, and the top of the look-around equipment shell is fixedly provided with a radar induction lamp. According to the multi-angle identification looking-around device, the novel multi-angle identification looking-around device is provided with the fixed type auxiliary camera, the rotary type dome camera and the double looking-around equipment, the monitoring range is enhanced through the fixed type auxiliary camera and the rotary type dome camera, and meanwhile the radar induction lamp and the radar module are installed; the lamp is turned on and turned off in a distance sensing mode, sufficient light is provided during monitoring, the equipment can be used in cloudy days and darker night, the slip ring is used by the equipment, the problem of winding of a connecting wire is solved through the slip ring, and the equipment can be used by 360 degrees.

The invention discloses a solar photovoltaic follow spot compensation system based on a Fresnel lens, which comprises an intelligent dynamic tracking compensation system, a follow spot positioning system, a follow spot compensation device and a photovoltaic panel device, and is characterized in that the intelligent dynamic tracking compensation system acquires sunlight angle information of the follow spot positioning system in real time; and the intelligent dynamic tracking compensation system is used for acquiring illumination data, real-time output current, output voltage and output power of the photovoltaic panel and local temperature, local humidity, local wind direction and wind power data in real time, and dynamically adjusting the Fresnel lens through analysis and processing. Compared with the prior art, a fusion path of'fixed photovoltaic panel equipment and an intelligent light following compensation technology 'is adopted, the system has obvious illumination compensation capability on fixed photovoltaic, has the most obvious gain effect under the condition of weak light, can realize stable power generation gain, and expands the application capability of the system under weak light scenes such as cloudy days and nightfall.

The utility model provides a wind direction and wind speed sensor heat preservation and anti-freezing device, and relates to the technical field of wind force induction, the wind direction and wind speed sensor heat preservation and anti-freezing device comprises an installation bottom plate and a sensor heat preservation mechanism, the sensor heat preservation mechanism is installed on the upper side of the installation bottom plate, and wind receiving plate shifting assemblies are installed on the outer sides of storage batteries. When the solar panel needs to be used, the solar panel can convert solar energy into electric energy, and the electric energy is stored in the storage battery, so that during use, the dependence on external electric energy can be reduced, the solar panel is slightly influenced by the environment, and the solar panel can be continuously used in cloudy days without the sun or in the dark stage, and the solar panel of the monocrystalline silicon solar panel can be effectively reduced; the influence of low temperature on the solar panel is avoided, the service life can be effectively prolonged, the overall operation is smoother and more stable, and after the wind direction and wind speed sensor is wrapped by the cotton gasket, the problem that heat dissipation is too fast due to the fact that the sensor body is made of aluminum can be effectively solved.

The utility model relates to a reserved hole protection structure, which belongs to the technical field of reserved hole protection, and comprises a hole sealing cover plate, a hole plugging cylinder, an interception net and a sealing cover, the hole plugging cylinder can be connected with the hole sealing cover plate through screws, the hole plugging cylinder is provided with a plugging rubber air bag, and the hole sealing cover plate is provided with a lower rubber air bag. The hole sealing cover plate is provided with a grip, a first inflation valve, a second inflation valve and an air bag air pressure sensor, and the interception net is fixedly provided with an annular frame. According to the utility model, the device can be adapted to holes with different sizes for rapid installation, has a sealing effect, not only can prevent sundries from passing through, but also can prevent water seepage, has a better protection effect, has adjustability and a rapid disassembly and assembly function, can be rapidly locked at the edge of the hole for installation, is provided with a warning structure, and is convenient to use. The alarm device can give an alarm at night and in cloudy days with dark optical fibers, an openable drainage hole is formed, a filter screen is arranged and can be opened when necessary for drainage, and accumulated water blockage is avoided.

The present invention discloses a pipeline heat preservation device in a solar power tower. By arranging a heat storage medium part inside the solar power tower body, the heat absorption medium pipeline is wrapped by the heat storage medium therein; an optical path channel is opened on the solar power tower body, and a corresponding heat absorption area is arranged on the heat storage medium part. The secondary reflector performs secondary reflection on the discarded light of the external mirror field, and the discarded light is secondarily reflected to the heat absorption area through the optical path channel. The heat storage medium in the heat storage medium part absorbs and stores the heat energy of sunlight, and the heat accumulated by the discarded light is stored in the heat storage medium. When the heat absorption system stops operating (such as during night and cloudy days, etc.), this part of heat energy can maintain the temperature of the heat absorption medium pipeline, thereby realizing the replacement of the electric tracing equipment. Without energy consumption, the heating and heat preservation of the heat absorption medium pipeline can be completed, solving the problems of high cost and large energy consumption caused by the existing heat absorption medium pipeline using electric tracing equipment.

The invention discloses a greenhouse heat preservation system coupling photochemistry and hot water energy storage, which belongs to the technical field of solar energy storage and comprises a photochemistry energy storage system, a solar hot water wall system, a heat exchange system and an automatic control system. The photochemical energy storage system absorbs ultraviolet rays and part of visible light and converts the ultraviolet rays and part of visible light into stable chemical energy to be stored, and the solar hot water wall system achieves heat exchange between a water medium and the greenhouse. When the water temperature of the water storage tank drops, the heat exchange system releases the stored solar energy to exchange heat with a water medium, and the heat supply capacity of the heat preservation system is maintained; and the automatic control system controls the other three systems. By the adoption of the system, photons of different frequencies of solar energy are utilized respectively, full-spectrum efficient energy storage utilization is achieved, and a greenhouse has the long-period heat storage function and the capacity of coping with long-time continuous cloudy days.

The utility model discloses a new energy window opener which comprises a first outer frame. The second outer frame is arranged at the bottom of the first outer frame; the fan frame is arranged on the side part of the first outer frame; the wire pressing frame is clamped on the side part of the fan frame; the connecting mechanism is arranged between the first outer frame and the fan frame; and the auxiliary mechanism is arranged at the bottom of the connecting mechanism, the auxiliary mechanism comprises a solar panel, and the connecting mechanism is used for connecting and positioning the installation of the solar panel. According to the utility model, the first conversion frame, the second conversion frame, the hollow cavity, the assembly frame, the solar panel, the mounting rack and the charging control panel are matched with one another, and the solar panel is mounted in the second conversion frame through the assembly frame and the mounting rack, so that the solar panel can be ensured to fully and effectively work no matter whether the window is opened or closed; meanwhile, the peripheral area of the window sash is large, so that redundant electric energy generated in sunny days can be stored in a storage battery matched with the charging panel and can be used in cloudy days.

The application provides an LED control method and a control terminal. The method is used for controlling an LED light source; the LED light source comprises multiple LED lamp strings; the control method comprises the following steps: acquiring RGB data of ambient light, and determining a current weather according to the RGB data; wherein the current weather is sunny or overcast; if the current weather is sunny, determining a sunlight spectrum color coordinate according to the RGB data; if the current weather is overcast, acquiring a current weather parameter, and calculating the sunlight spectrum color coordinate according to the current weather parameter; and controlling each LED lamp string according to the sunlight spectrum color coordinate. The application can control the LED light source to simulate sunlight in sunny days, and can simulate sunlight in normal sunny days based on the sunlight spectrum color coordinate calculated according to an atmospheric model in overcast days. The LED light source can be adaptively adjusted according to weather and seasons, so that a user can obtain comfortable simulated sunlight lighting experience in all time periods.