9 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.

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 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.

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 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 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.