1079 results about "Sunlight irradiation" patented technology

The degradation of directivity performance due to stray light with poor directivity entering and propagating through tapered light guiding members can be prevented, and thus the decrease in the degree of spectrum correspondence with sunlight can be prevented. A light shielding member 41 is placed in between adjacent tapered light guiding members 4. Specifically, the light shielding member 41 is attached to or coiled around the surface of a circumference wall of the tapered light guiding member 4, other than one end surface and the other end surface for allowing light to enter and exit. Further, the light shielding member 41 is placed so that stray light will not enter the tapered light guiding member 4 from the circumferential wall thereof, other than the one end surface and the other end surface.

A multi-functional photochromic chiral nematic liquid crystal window comprises at least a photochromic chiral nematic liquid crystal layer. The windows are able to not only to darken in color upon exposure to sunlight irradiation but also control the light and the heat passing through them, which can be used as the windows of buildings, vehicles, and the like.

The invention belongs to the technical field of chemical materials, and in particular discloses a super-biparental self-cleaning coating material and a preparation method thereof. The coating material of the invention consists of nano TiO2 particles and organic-inorganic hybridized matrix and obtains super-biparental self-cleaning property through sunlight irradiation, wherein the content of the nano TiO2 particles is 0.5 to 10 percent, and the organic-inorganic hybridized matrix is formed by crosslinking and curing siloxane oligomer (A), phenylpropyl oligomer (B) with alkoxyl silicon group and amino silane (C) at the room temperature. The specific preparation method comprises the following steps: firstly preparing slurry from the nano TiO2 particles, then mixing the slurry, the components A and B, organic diluent and the like, adding C into the mixture, stirring the mixture evenly, then coating the mixture on the surface of a base material, drying the mixture at the room temperature, and irradiating the mixture for a period of time by sunlight to form the coating material with required properties. The coating material is suitable for large-area construction, has good weather resistance and remarkable self-cleaning property, and can be used as a self-cleaning coating on the surfaces of a building external wall, a bridge, an oil field and yard mechanical equipment, a guardrail, a glass curtain wall and the like.

The invention discloses a preparation method of a metal oxide modified TiO2 nanometer tube array electrode, which comprises the following steps that: (1) a titanium sheet is used as a base plate, and a highly ordered TiO2 nanometer tube array is prepared by an anodic oxidation method in fluorine-containing electrolyte; (2) the TiO2 nanometer tube array is put into corresponding metal salt solution for ultrasonic treatment, and a metal deposition TiO2 nanometer tube electrode is prepared by the cathode electrolytic deposition; and (3) the TiO2 nanometer tube electrode with metal particles deposited on the surface is used as an anode, and a metal oxide / TiO2 nanometer tube electrode is prepared through the anodic oxidation of lye solution. The invention also discloses the metal oxide modified TiO2 nanometer tube array electrode prepared by the preparation method, and the metal oxide / TiO2 nanometer tube array electrode shows good photoelectrocatalysis activity and visible light response characteristic under the sunlight irradiation and can be used in the fields of photoelectrocatalysis environmental pollutant degradation, photoelectrocatalysis synthesis and hydrogen production through water photolysis.

A visible-light-activated photocatalyst powder and method for producing and modifying the same are provided. The visible-light-activated photocatalyst powder is produced by improving the process conditions or by modifying with platinum oxide. Further, the UV light-activated titanium dioxide is modified to be more visible light activated by loading platinum oxide on the surface of titanium dioxide. The methods enhance the conversion of sunlight irradiation to chemical energy. The air-born pollutants can be degraded by the treatment with the photocatalyst under UV or visible light irradiation.

This invention relates to an acrylate copolymer, more specifically, a sunlight radiation-crosslinked polymer emulsion, its preparation method and its application. The polymer emulsion is composed of: water 50-70 wt.%, emulsifier 0.5-5.0 wt.%,, initiator 0.2-1.0 wt.%, alkyl acrylate 3-40 wt.%, alkyl methacrylate 3-40 wt.%, hydroxyalkyl (meth)acrylate 1.0-10 wt.%, alkyl acrylic acid 0.5-10 wt.%, other acrylate functional monomers 0.5-10 wt.%,, and self-crosslinking monomer 0.5-5.0 wt.%. The self-crosslinked core-shell emulsion is composed of cores with a higher glass transition temperature, and shells with a lower glass transition temperature. The emulsion has such advantages as low film-forming temperature, low film-forming aid consumption, and high hardness of the film, and is environmentally friendly.

The invention discloses a low heat absorption PVC product and a method of preparing adhesive tapes and the rubber sheets from it. The low heat absorption PVC product involved in the invention comprises: 100PHR of PVC powder, 20-120PHR of a plasticizer, 1-10PHR of a stabilizer, 0-10PHR of a modifier, 0-50PHR of a filling agent, 0-20PHR of a foaming agent, and 1-30PHR of an infrared pigment. The prepared products fall into ordinary products and foamed products. The foaming agent is not needed in the ordinary products, and the foaming agent needs to be added in the foamed products. For the PVC product disclosed in the invention, the infrared pigment is added into the PVC powder, so that the PVC product has the advantage that it can reflect infrared rays irradiated from the sunlight so as to lower the temperature of an object.

The invention relates to an agricultural greenhouse wireless monitoring node which comprises a low-power-consumption single-chip microcomputer, a temperature and humidity sensor, a soil temperature sensor, a soil moisture sensor, an oxygen detecting part, a sunlight irradiation sensor, a relay, a ZigBee radio frequency transparent transmission module, a power supply part and a directive antenna. According to the other technical scheme, an agricultural greenhouse data monitoring and controlling method of the agricultural greenhouse wireless monitoring node is provided. The node capable of being used for agricultural greenhouse wireless remote monitoring is provided. The node can provide a new management approach for agricultural greenhouse planting. According to the node, common planting parameters of a greenhouse can be collected, and a means capable of remotely controlling greenhouse planting equipment is provided. A solar power supply and directive antenna transmission enhancement mode is adopted by the node, and the node can be arranged more flexibly. The node is simple in structure, low in cost, reliable in work and beneficial to being popularized in the greenhouse agricultural planting field of our country.

A UV exposure dosimetry system includes at least one UV sensor that accurately measures the UV irradiance intensity. The UV dosimetry system integrates the measured UV irradiance intensity over time to calculate the real-time UV dosage and the vitamin D production by taking into account factors comprising UV sensor location, body surface area, clothing coverage, and sunscreen usage. Based on the measurement, the system can predict the time remaining to skin burn and the time remaining to reach daily goal of vitamin D production. The system can also estimate UV intensity for a time in the future at a geographic location based on the forecast UV index data, and predict UV dose and vitamin D generation for the user corresponding to user defined scenarios. The UV dosimetry system supports multi-user control through an advanced and user friendly input and output interface.

The invention discloses an optical and thermal-oxidative dual-degradation plastic thin film and a manufacturing method thereof. The plastic thin film comprises a TiO2 photocatalyst and a transitional metal carboxylate thermal-oxidative degradation accelerating agent. The preparation method for the plastic thin film comprises the following steps of: uniformly mixing an optical catalyst, transitional metal carboxylate, polyethylene micro powder and oxidized polyethylene wax according to a certain proportion, performing melt extrusion, obtaining optical and thermal-oxidative dual-degradation plastic mother particles, uniformly mixing the plastic mother particles and polyolefin according to a certain proportion, and performing blow molding to obtain the optical and thermal-oxidative dual-degradation plastic thin film. According to the method, the process is simple, the raw materials are available and cheap, and the plastic thin film can be produced by the conventional plastic production equipment. The prepared plastic thin film can generate optical degradation under the irradiation of the sunshine and thermal-oxidative degradation by heat accumulated by stacked garbage, so that the waste plastic thin film which is not degraded by the sunshine completely can be continued to be subjected to thermal degradation. Furthermore, according to the method of the national standard (GB / T19276.2-2003), residues obtained by degradation of the thin film are determined, and a result shows that the degraded residues can be degraded by microorganisms, so that the optical and thermal-oxidative dual-degradation plastic thin film has extremely high practical value.

The invention discloses a coating fluid for preparing inkjet high-gloss waterproof printing paper, which comprises the following components in parts by weight: 10-40 parts of ink powder adsorbent, 30-55 parts of adhesive, 0.05-0.15 part of whitener, 0.05-0.15 part of dispersing agent, 2-5 parts of defoaming agent, 1-3 parts of neutralizer and 140-200 parts of distilled water. The adhesive is a cationic water-based polyurethane emulsion. The invention also discloses a printing paper for preparing the coating fluid and a preparation method thereof. The coating fluid has the advantages of no toxicity, no odor, favorable bonding property and favorable water resistance; the coating has favorable weather resistance and can bear sunlight irradiation for a long time; the coating has the advantages of high internal-structure strength and favorable adhesion for the substrate; and the coating printing surface has favorable scratch resistance. The printing paper prepared from the coating fluid has the advantages of ultrahigh drying rate after ink absorption, bright color, high color reduction degree, no piling phenomenon and favorable waterproof effect; and the output image has clear and sharp picture.

The invention discloses an agricultural planting greenhouse with an automatic cooling function, which comprises a greenhouse body composed of support plates fixedly connected to a ground and a greenhouse framework; the two vertical plates are symmetrically and fixedly connected to the ground, a hollow plate is fixedly connected to the upper ends of the vertical plates, air guide plates are uniformly distributed on and communicated with opposite side walls of the hollow plate, and one end, far away from the side wall of the hollow plate, of each air guide plate is fixedly connected with a sun-shading plate that is of hollow structure. According to the invention, when external sunlight irradiation temperature rises in the noon, a thermal expansion liquid expands rapidly, so that air is introduced into the sun-shading plates that stretch to shield greenhouse protective film, the direct irradiation of sunlight to the greenhouse is reduced, the rise range of the temperature in the greenhouse is narrowed; when the external sunlight irradiation temperature falls, the thermal expansion liquid contracts so that the air in the sun-shading plates contracts less, manually laying and removing sunshade net is prevented, and the workload of people is reduced.

The invention discloses a method and system of measuring solar energy on the spot. The method uses the camera with fish-eye lens to soot the picture of the hole hemisphere, making sure every point's altitude angle and azimuth angle in the picture by the law of imagery and find the corresponding local solar trace picture according to the geographic latitude of the measuring point, connecting the solar trace with the orientation data and measuring the fender condition of the surrounding to the sunlight in one year, obtaining a certain time step from the illuminating time and the lever solar radiation intensity of that step can be computed according to the solar altitude angle h and atmospheric translucence p. The invention can measure the solar radiation intensity of the measuring spot on the level surface, vertical surface, any dip face at a certain time and make sure the best getting-energy surface, which can be used orientate the solar collector and battery and measure the energy of the solar house and sun-breaker.

The invention discloses a method for preparing a porous alpha-Fe2O3 photo-anode and belongs to the technical field of photoelectric water decomposition. The method uses fluorine doped SnO2 conductive glass (FTO) as a substrate, a FeOOH film uniformly grows on an FTO surface through hydrothermal reaction, and then a photo-anode material of an alpha-Fe2O3 film with pores formed in the surface is prepared through microwave assisted heating. The method is simple in operation, mild in reaction condition, short in reaction period and high in repeatability, raw materials are cheap and are easy to obtain, complicated and expensive devices are not needed, the preparation cost is low, the prepared material has excellent oxygen production performance when being applied to photoelectric water decomposition, the photoelectric current density can be up to 2.4 mA / cm<2> under the simulated sunlight irradiation compared with a reversible hydrogen electrode 1.23 V, and the method has wide application prospect on the aspect of development of sustainable clean energy.

The automobile lamellar telescopic device of solar cell plate in vehicle and mounted in the top of vehicle may have 2-5 layers, including one fixed top layer and the lower telescopic layers controlled with in-vehicle control system for automatic telescopic motion. The control system has a motor to drive a gear and gear racks to realize telescopic motion in small power consumption. The automobile lamellar telescopic device of solar cell plate has increased sunlight irradiation area and thus high photovoltaic electricity generating power. The present invention may be used in different types of electrically driven vehicle.

The invention relates to a method for photocatalytic degradation of pesticide residues. The method is characterized by: taking butyl titanate, zinc acetate, urea and the like as raw materials, conducting co-precipitation to synthesize a ZnO / TiO2 composite nano-material with photocatalytic activity, spraying the composite nano-material on plants, and making use of sunlight irradiation to degrade pesticide residues. The material has high absorption strength and strong photocatalytic activity in both ultraviolet and visible ranges, and has the characteristics of obvious degradation effects, simple operation and low cost when used in pesticide residue degradation, thus having wide application and popularization value.

The invention discloses a solar energy and fuel coal coupled flexible power generation system and a running method. The system comprises a coal-fired power generation unit thermodynamic system and a high-temperature heat storing system which comprises a solar heat collection system, cold and hot heat storing medium tanks, a heat storing medium pump, a heat storing medium and feed water heat exchanger and the like and is coupled with solar thermal power generation; a heat storing medium heater is arranged in a boiler flue; the flow of a heat storing medium entering the solar heat collection device and the heat storing medium heater is adjusted through cooperation of a solar heat storing medium adjusting valve and the heat storing medium pump, therefore, influences of sunlight irradiation changes are eliminated, and the output power is kept stable; peak regulation is conducted through the heat storing medium tank, and the steam turbine output power is reduced under the stable combustioncondition of a boiler; and the flow and temperature of feed water entering the heat storing medium and feed water heat exchanger are adjusted through opening and closing of a high-pressure heater adjusting valve group, and then the system meets the requirements of the quick load changing rate of a unit. According to the solar energy and fuel coal coupled flexible power generation system and the running method, solar energy and fuel coal power generation coupling can be achieved, coal consumption is reduced, and the flexibility and economical efficiency of the unit are significantly improved.

The invention provides a preparation method of a acidic bismuth titanate photocatalyst with photocatalytic activity under sunlight. The invention adopts a chemical solution decomposition method (CSD), and uses bismuth nitrate and P25 as the main raw materials to prepare bismuth titanate (Bi4Ti3Oi2), which is then subjected to acid treatment to obtain the bismuth titanate photocatalyst with sunlight photocatalytic activity. The photocatalyst has excellent methyl orange (MO) degradation performance in the sunlight irradiation. The production process involved in the invention is simple and has cheap and easily available raw materials; the obtained powder has efficient light response degree, and widens the application range of bismuth titanate in photocatalysis field.

The invention discloses a brand-new arm type vehicle-mounted intelligent bracket of mobile communication equipment. A mobile phone and a vehicle-mounted multimedia system are connected into a system through an intelligent module, are independent from each other, have respective functions, and are compatible with each other; the arm type vehicle-mounted intelligent bracket comprises a mobile phone fixing seat, an intelligent control module, a connecting rod folding and releasing mechanism, a bracket mounting seat, a bracket assembly, and a self-adhesive driving recorder. The arm type vehicle-mounted intelligent bracket is mounted at a column A or the upper part of front windshield of a vehicle, can be freely adjusted by a driver to move, rotate and stop relatively freely within a certain space range, and can be placed back to a normal working position, so that the purposes of not influencing sight, not influencing operation of drivers, avoiding influence of sunlight irradiation, and facilitating mounting and detaching of a mobile phone are achieved, and mobile phones can be used quite conveniently in a vehicle.

A solar energy thermostatic controller using a solid-state microcomputer that manages air mover(s) to supply heated air for building space heating. Methods includes microcomputer software for communicating with temperature sensors located at the solar heating source, the supply vent source and the building room / interior. The present invention thermostatic control device features a data logger to record temperatures and humidity history, and elapsed time usage history of solar heated air available from attics and crawl spaces; or solar collectors mounted in or on walls, rooftops, or exterior locations. The thermostatic control device manages use of limited solar heated air for building environmental control. Program controlled temperature set points manage an HVAC blower to gather solar heated air during the daily sunlight solar excursion and to control shutdown of the supply system when solar heated air temperature falls below present room / interior temperature. Methods include permanent memory storage of historical data.

The invention discloses an arc-shaped track type solar cell panel mobile positioning device, which comprises a base (01), an arc-shaped track component (02), a mobile stand (04) and the like, wherein a solar cell panel (05) is fixedly mounted on the mobile stand (04); two ends of the arc-shaped track component (02) are hinged with the base (01), and are each provided with a pushing mechanism (03) used for pushing the arc-shaped track component (02) to rotate around a hinge shaft; the mobile stand (04) is arranged on the outer side of the arc-shaped track component (02), a driving wheel of the mobile stand (04) meshes with wheel teeth of the arc-shaped track component (02), and a limiting wheel of the mobile stand (04) cooperates with a limiting track of the arc-shaped track component (02); and the solar cell panel (05) is perpendicular to the direction of sunlight irradiation through controlling the arc-shaped track component (02) and the mobile stand (04) to move separately. The arc-shaped track type solar cell panel mobile positioning device is simple in structure, and can be installed independently or in linkage of multiple sets.

The invention discloses a method for rapidly preparing a nano-silver bacteriostatic agent through a ligustrum quihoui fruit extracting solution, and belongs to the technical field of nano-biology. Themethod comprises the following steps that the mature ligustrum quihoui fruit is collected, the ligustrum quihoui fruit is dried to the constant weight after being thoroughly cleaned, and the ligustrum quihoui fruit is ground into powder; the ligustrum quihoui fruit powder is taken, ultra pure water is added, heating and refluxing are conducted, after natural cooling, pressure-reduction suction filtration is conducted, centrifuging is conducted, and finally the ligustrum quihoui fruit extracting solution is obtained; the ligustrum quihoui fruit extracting solution is taken, the AgNO3 solutionis added, diluting to graduation is performed by using the ultra pure water, and the constant-volume solution is arranged in an ultrasound instrument to be subjected to ultrasound treatment; and meanwhile, sunlight irradiation is conducted, and the nano-silver bacteriostatic agent is obtained. According to the method, the ligustrum quihoui fruit extractive is utilized for biologically synthesizingnano-silver, the light-catalyzed reaction with the assistance of ultrasonic waves is adopted, the synthesizing speed is obviously increased, and synthesizing can be finished within 1-15 min. The method is environment-friendly, materials are easy to obtain, the products have high uniformity and dispersibility, the product quality is stable, an obvious antibacterial effect is achieved, the antimicrobial spectrum is wide, and popularization is facilitated.

The invention provides a back surface junction N-type double-sided crystal silicon cell and a preparation method thereof. The cell comprises a front surface Ag electrode, a front surface antireflection film, a phosphorus diffusion N+ front surface field layer, an N-type substrate, a boron diffusion emission electrode P+ layer, a back surface passivation composite film and a back surface AgAl electrode. The front surface and the back surface of the cell have a textured structure. The back surface passivation composite film comprises a borosilicate glass layer and a silicon nitride layer. The borosilicate glass layer is arranged on the boron diffusion emission electrode P+ layer. The silicon nitride layer is deposited on the borosilicate glass layer. Both of the front surface and the back surface of the cell can effectively receive sunlight irradiation for power generation so that comprehensive efficiency of the cell can be enhanced; and the laminated film of the borosilicate glass layer and the silicon nitride layer through oxidation treatment is adopted to act as a boron emission electrode passivation layer and a diffusion masking layer of subsequent phosphorus diffusion so that boron emission electrode passivation and diffusion masking functions can be realized simultaneously, and the process of multiple times of etching and mask deposition in the manufacturing process can be reduced. The back surface junction N-type double-sided crystal silicon cell is simple in technology, high in production efficiency and low in production technology cost.

The invention discloses a novel photo-biological floating filler for sewage treatment, and the filler comprises two parts of an internal filler loading shell and an external loading layer. The internal filler loading shell is a hollow ball which adopts polyethylene or polyurethane as a material, and has a diameter of 3-5 cm; the external loading layer is biological bacterial sludge embedded in a sol doped with titanium dioxide. Since the internal filler loading shell has a hollow structure, the filler floats in water; with sunlight irradiation, the photocatalytic degradation of sewage is realized; since microorganisms are embedded in the external loading layer, the biological treatment and photodegradation are tightly coupled and have synergistic effect; the sewage treatment effect is improved, and the treatment efficiency is increased. The novel photo-biological floating filler of the invention is in a fluidized state in water, has good mass transfer performance, does not need fixed trusses, has low cost and a long service life, and is convenient for replacement. The problems of short service life and poor treatment effect of current fillers as a result that fixed trusses are easy to be corroded by sewage are solved.

The invention relates to an automatic tea leave withering room, which consists of a sun lounge and equipment installed inside the lounge. The room has the characteristics that the sun lounge is a sheltering room provided with at least a surface which is exposed to sunlight and made of a transparent material; a humidity-discharging device is arranged at the lower part of the room; and the equipment installed inside the room comprises a left bracket and a right bracket, wherein, two sets of synchronous chain wheel and chain combinations are fixed on the both brackets respectively, each set comprises at least two chain wheels and a chain connecting with both wheels, a hook is positioned on part of the pin roll of the chain at a constant angle, a rest is fixed between corresponding hooks of the two chains, at least two corresponding chain wheels of the two chain wheel and chain combinations are taken as the driving synchronous chain wheels and driven by the power mechanism, and a supporting slide track is arranged below the chains and fixed on the brackets. The invention has the advantages that the sun lounge makes good use of the forces of nature, and is windproof, rainproof, sanitary, clean and free from the defects of open-air drying. Moreover, the drying equipment installed inside the room can transfer tea leaves from the sunlight area to the shady area and vice versa for alternate withering.

The invention discloses a weed prevention and control method used in the organic rice planting process. The weed prevention and control method used in the organic rice planting process is low in cost, good in effect, truly free of toxin and damage and practical. The method is characterized that a rice seedling bed is irrigated 7-10 days after rice seedlings are transplanted, deep water weed control is achieved, the weed control water level is kept to be 55-65% of the height of the rice seedlings, and the water level is kept continuously for 8-10 days and nights; during the time from transplanting of the rice seedlings to water treatment, the water level is kept in the field, soil can not be exposed, and growth of weeds and weed seeds is inhibited or the weeds and the weed seeds are dead under the condition that oxygen and sunlight irradiation lack. The method is low in implementation cost, good in weed prevention and control effect and very beneficial to later growth of rice. The method solves the problems which farmers long to solve all the time but are not solved in the organic rice planting process, and has an important promoting significance in planting of organic rice.

The invention provides railway structure concrete protecting coating and a preparation method and a using method thereof. The protecting coating comprises a sealing primer layer, a polyurethane middlepaint layer and a fluorocarbon finish paint layer. The protecting coating has excellent adhesion; when the protecting coating is used for protecting a railway concrete bridge, the protecting coatingcan avoid occurrence of a situation that the railway concrete bridge cracks first and then is repaired in a special environmental region, significantly improves the durability of the railway concretebridge, prolongs the service life the railway concrete bridge, can achieve an excellent concrete protecting effect in the case of relatively thin concrete bridge coating thickness, and is convenient and fast to use; the protecting coating can also be used for protecting the surface of a ballastless track structure, and when the protecting coating is applied to the surface of a concrete track plateunder a steel rail or the surface of a ballast bed plate, the temperature difference between day and night due to sunlight irradiation can be reduced, the warpage amount of the track plate can be reduced, the open joints of plate corners or upwarp of the ballast bed plate or other damages can be reduced or even eliminated, and the effect of improving the durability of a ballastless track high-speed railway with a strict requirement on the smoothness is relatively good.

The invention discloses an electricity larceny prevention monitoring apparatus and method of a distributed photovoltaic power generation system. The apparatus comprises a sunlight irradiation intensity monitoring unit, a core data processing unit and a feed network monitoring unit. The core data processing unit calculates convertible solar energy according to a time characteristic curve of sunlight irradiation intensity output by the sunlight irradiation intensity monitoring unit; the core data processing unit, according to time characteristic feed network currents, voltages, power and a time characteristic curve of electric energy, calculating to obtain the electric energy output from the photovoltaic power generation system; the core data processing unit makes a comparison between the time characteristics of parameters outputted by the two units in terms of consistency; if a deviation is smaller than a set value, it is determined that the electric energy output from the photovoltaic power generation system comes from the solar energy converted by a photovoltaic battery pack; and if the deviation of the consistency of the two is greater than the set value, electricity larceny alarm information is output. According to the invention, automatic monitoring, identification and early warning of potential electricity larceny behaviors of users of a distributed photovoltaic grid-connected power generation system can be realized at an early stage.

The invention discloses a light adjustment and temperature adjustment control system for a sightseeing lift, which belongs to the technical field of lift control systems. The light adjustment and temperature adjustment control system comprises a detection module, a control module and an output module, wherein both the detection module and the output module are connected with the control module; the output module comprises electrically-controlled liquid crystal light adjusting glass which is connected with the control module; and the detection module comprises a light sensing device which is connected with the control module. The invention further discloses a light adjustment and temperature adjustment control method for the sightseeing lift. According to the system and the method, the control module is used for transmitting a processing result signal to the output module when illumination intensity is very high and is higher than a first preset illumination intensity value according to the detection of the light sensing device, and the electrically-controlled liquid crystal light adjusting glass is closed and is driven to enter a light insulating and heat insulating state, so that strong sunlight irradiation is insulated, the generation of high temperature in a lift car due to irradiation is avoided, the consumed electric energy of an air conditioner is reduced, and the aims of saving energy and protecting environment are fulfilled.

The invention relates to a fixed-point reflective sunlight-tracking system and belongs to the technical field of environment protection and energy saving. A plurality of plane mirrors are laid on a support frame of the plane mirrors. A heating film is arranged at the back part of each plane mirror so that each mirror can be heated independently. The small plane mirrors are combined to form a matrix. A mechanical device, which is driven by a motor and connected with a one-chip-microcomputer controller, is arranged on each plane mirror. The small plane mirrors in each line and each row of the matrix can be adjusted upwards and downwards and left wards and rightwards independently. Positioning sensors are installed in places in which projection is needed. The device enables a place in which sunlight is unavailable for a long time to obtain sufficient sunlight irradiation in sunny days and has the characteristics of being high in reflectivity, low-carbon and environment-friendly and convenient to maintain and use. The device is applicable to occasions such as family houses, factories, office buildings and agricultural sheds and the like so that the device is an energy-saving and safe and health product.