36results about How to "Improve light receiving effect" patented technology

An optical receiving apparatus has a route change detector for detecting occurrence of a route change of received signal light, a memory for beforehand storing optimum dispersion compensation quantity for the received signal light before and after the route change, a tunable dispersion compensator for compensating dispersion of the received signal light, and a controller for controlling a dispersion compensation quantity used by the tunable dispersion compensator according to the optimum dispersion compensation quantity for the received signal light after the route change, which is beforehand stored in the memory, when the route change detector detects occurrence of the route change. The dispersion compensation quantity can be optimized at high-speed for each of optical transmission routes of the received signal light.

A quantum dot-trap infrared receiver structure includes: a semi-insulating GaAs underlay, a GaAs bottom contact layer which is made on the semi-insulating GaAs underlay, a lower GaAs isolation layer which is made at one side of the GaAs bottom contact layer, and a table-board is formed at the other side of the GaAs bottom contact layer; an InAs / InGaAs dot-trap structure layer with 10 periods is made on the lower GaAs isolation layer and is the core part in which photocurrent is formed and the infrared detection is finally realized; a GaAs top contact layer is made on the InAs / InGaAs dot-trap structure layer with 10 periods; an upper electrode is made on the middle part of the GaAs top contact layer, and the externally added voltages carried on the detector can be realized by the upper electrode; the lower electrode is made on the table-board of the GaAs top contact layer, and the externally added voltages carried on the detector can be realized by the lower electrode.

The invention belongs to an illuminance detection device for photoelectric components and in particular discloses an intermittent illuminance detection device. The intermittent illuminance detection device comprises a pedestal, wherein a photoelectric component opening / closing device for placing a photoelectric component is arranged at the bottom of the pedestal; and a driver for driving the photoelectric component opening / closing device to rotate and driving the photoelectric component opening / closing device to extend out of the bottom surface of the pedestal is arranged on the pedestal. Theintermittent illuminance detection device has the advantages that: when the photoelectric component is detected, the illuminated surface of the photoelectric component is not sheltered completely, and when the photoelectric component is not detected, the illuminated surface of the photoelectric component is sheltered completely, so that the accuracy of the detection result is effectively improved; and at the same time, the intermittent illuminance detection device has certain dustproof and rainproof functions, so that overlong illumination duration of the photoelectric component is avoided and the service life of the photoelectric component is guaranteed; in addition, the intermittent illuminance detection device has a better self-checking function, so when the external illuminance does not need to be detected, the illuminated component can be placed in a sealed darkroom, and the normal using performance of the photoelectric component is guaranteed by adopting a standard light source to perform self-checking and correction.

The invention discloses a photovoltaic panel mounting structure, which comprises a photovoltaic panel assembly and a support assembly, wherein the photovoltaic panel assembly comprises a support plate; the upper end surface of the support plate is provided with a plurality of parallelly-distributed grooves; each groove is internally embedded with a plurality of photovoltaic panels distributed along the groove length direction; the side wall of each groove is provided with a folded edge extending towards the middle part of the groove for pressing the photovoltaic panel; the support assembly comprises a bottom plate; one end of the bottom plate is hinged with one end of the support plate; a motor is fixed on the bottom plate; the output shaft of the motor is connected with a screw rod; two ends of the screw rod are in rotating connection with a pair of bearings fixed on the bottom plate; a sliding block is in screw connection onto the screw rod; the bottom plate is provided with a sliding rail; the sliding block is connected onto the sliding rail in a sliding mode; a support rod is hinged at the back part of the support plate; and one end, far away from the support plate, of the support rod is hinged with the sliding block. The photovoltaic panel mounting structure has the advantages that the mounting efficiency is high; the maintenance and the repair are convenient; and the angle formed between the photovoltaic panel and the sunlight can be flexibly adjusted.

The invention relates to a visible light LED wireless communication light receiving antenna. The antenna is of a trapezoid structure formed by bonding a plurality of Fresnel lenses comprising a principal Fresnel lens (1) and plural subordinate Fresnel lenses (2); the principal Fresnel lens is the top face of the trapezoid and the subordinate Fresnel lenses are the lateral faces of the trapezoid; the principal Fresnel lens and the subordinate Fresnel lenses receive incoming optical signals from different directions with the range constrained in the angle formed by a principal optical axis (3) and a subordinate optical axis (4), and focus the light energy on the surface of a receiver (5) so as to expand receiving angle and receivable light energy. The Fresnel lenses are thin and have good short focus focusing effect, and the shapes of the antenna can be combined at will according to actual receiving condition. The invention is simple in structure, small in size, light in weight and low in cost, has large light receiving angle and good receiving performance, and is easy to implement.

The invention discloses silver paste used for printing a crystalline silicon solar cell. The silver paste used for printing the crystalline silicon solar cell is characterized by comprising paste A and paste B, wherein the paste A comprises 80-90% of silver-coated copper powder, 3-5% of paste A glass powder and 5-17% of paste A organic carrier based on mass percentages; and the paste B comprises 85-95% of silver powder, 1-2% of paste B glass powder and 4-13% of paste B organic carrier based on mass percentages. The silver paste used for printing the crystalline silicon solar cell is relatively low in cost and capable of ensuring photoelectric conversion efficiency.

The invention discloses an aerosol cultivation device, and belongs to the technical field of waterless cultivation equipment. The aerosol cultivation device in the technical scheme is characterized inthat multiple cultivation openings distributed at the same distance are formed in a spiral cultivation pipeline and used for placing field planting cups, cultivated plants can be placed in the corresponding field planting cups, multiple plants can be cultivated maximally in a certain floor area, a nutrient solution is atomized by an ultrasonic atomizer in the device and then input into the spiralcultivation pipeline through air distribution branch pipes, nutrient solution aerosol is enabled to be attached to the plant roots and wet the plant roots when flowing in the spiral cultivation pipeline, and the roots of each plant can be sufficiently wetted by the flowing-in nutrient solution through the narrower pipeline; besides, a rotating base tray is arranged below the device and can rotateto allow each plant to be illuminated when the sunlight is sufficient, and a light supplementing lamp is arranged in the middle of the spiral cultivation pipeline and supplements light to the plantswhen the natural illumination is insufficient; compared with a relatively traditional mode, the device has the advantages that the plant lighting effect is improved, the nutrient solution is sprayed to the plant roots more comprehensively, and the utilization rate of the nutrient solution is higher.

The invention discloses a solar greenhouse for flowering plants in winter in high and cold areas. The solar greenhouse for flowering plants in winter in high and cold areas comprises a cold-proof layer, a front wall, a lighting roof, a peak, a rear roof, a rear brick wall, polystyrene boards, an air vent, a biomass reverse-burning multi-pass low-carbon energy-saving water boiler, a cotton quilt, an electric roller shutter machine, and a sun-shading net rack. Lighting angles of roof positions 0.5m-1.5m, 1.5m-2.5m, 2.5m-3.5m, 3.5m-4.5m, 4.5m-5.5m, 5.5m-6.5m and 6.5m-7.5m away from the front wall inside greenhouse are 53DEG-57DEG, 48DEG-52DEG, 43DEG-47DEG, 38DEG-42DEG, 33DEG-37DEG, 28DEG-32DEG, and 23DEG-27DEG respectively. A vertical line of the peak is 0.5-1.5m away from the inner side of the rear brick wall. The peak is 4.4-4.6m off the indoor floor. The polystyrene boards are disposed in the middle of the rear brick wall. The top of the rear wall has an inner elevation of 63DEG-67DEG apart from the roof. The biomass reverse-burning multi-pass low-carbon energy-saving water boiler is disposed in the greenhouse.

The invention relates to an agricultural facility, in particular to an eggplant solar greenhouse growing in an area north of northern latitude 43 degrees in winter. The eggplant solar greenhouse comprises a shed surface (1), a shed frame (2), upright posts (3), cross beams (4), a shed cover (6), a heat-insulating blanket (7) and a heat-insulating wall (8). The eggplant solar greenhouse is characterized in that: for the heat-insulating wall (8) of the solar greenhouse, the bottom width d is 3,900-4,100mm, the upper width g is 2,450-2,550mm and the inside height f is 1,650-1,750mm; the span inside the shed b plus c is 5,400-5,600mm, the distance c between the upright posts (3) and the inside of the heat-insulating wall (8) is 1,080-1,120mm, the cross beams (4) are supported on the upright posts (3) and the total height e of the upright posts (3) and the cross beams (4) is 2,650-2,750mm; and the shed cover (6) is supported on the cross beams (4); and the inside elevation gamma of the shed cover (6) is 41-42 degrees. Compared with the traditional solar greenhouse, structural parameters of the invention have large change, so that the invention remarkably improves the light-acceptance performance and the heat-insulating capability of the greenhouse, provides adequate conditions for the growth of solanaceous fruit vegetables, in particular eggplants, achieves the goal of continuously producing the eggplants all year round by only depending on sunlight heat source in the area north of northern latitude 43 degrees in winter and remarkably improves the economic benefits.

The invention provides a basketball frame device used for physical education. The device includes a bottom plate, the bottom plate fixedly arranged on the ground through an anchor bolt, the upper sideof the bottom plate is fixedly connected with a support frame, the support frame is provided with a groove with an opening facing upward, a threaded rod is arranged in the groove, the bottom of the threaded rod is rotatably connected with the bottom of the support frame, the lower portion of the threaded rod is fixedly connected with a first bevel gear, the left side of the first bevel gear is meshed with a second bevel gear, the left end of the second bevel gear is fixedly connected with a first rotating shaft, the first rotating shaft passes through the support frame and extends outward, and the left end of the first rotating shaft is fixedly connected with a handle; a lifting cylinder is arranged in the groove above the threaded rod, and the lifting cylinder is provided with a threadedgroove with an opening facing downward. The device has the advantages that a solar photovoltaic panel can convert optical energy into electric energy, then electric energy is then supplied to an illuminating lamp, and training can be conducted at night. The solar photovoltaic panel device is used for improving vthe light receiving effect of the solar photovoltaic panel.

The invention discloses a solar greenhouse for flowering plants in winter in northern China. The solar greenhouse for flowering plants in winter in northern China comprises a cold-proof layer, a front wall, a lighting roof, a peak, a rear roof, a rear brick wall, polystyrene boards, an air vent, a cotton quilt, an electric roller shutter machine and a sun-shading net rack. The solar greenhouse is 5DEG-8DEG oriented by west. The span from the front wall to the rear brick wall is 7-9m. lighting angles of roof positions 0.5m-1.5m, 1.5m-2.5m, 2.5m-3.5m, 3.5m-4.5m, 4.5m-5.5m, 5.5m-6.5m and 6.5m-7.5m away from the front wall inside the greenhouse are 53DEG-57DEG, 48DEG-52DEG, 43DEG-47DEG, 38DEG-42DEG, 33DEG-37DEG, 28DEG-32DEG, and 23DEG-27DEG respectively. The peak is 4.4-4.6m vertically off the indoor floor. A slant of the rear roof is 1.1-1.3m in length. The rear brick wall is 3-4m in height. The polystyrene boards 15-25cm thick are arranged in the middle of the rear brick wall. The top of the rear brick has an inner elevation of 63DEG-67DEG apart from the inner roof.

The invention discloses a sunlight greenhouse for winter vegetables in the northern region. The sunlight greenhouse comprises a cold-proof layer, a front wall, a lighting roof, a greenhouse vertex, a rear roof, a loam wall, a quilt and an electric roller machine, wherein the direction of the sunlight greenhouse is 5-8 degrees toward the west; the span from the front wall to the loam wall is 7-9m; the roof lighting angles alpha corresponding to the places of 0.5-1.5m, 1.5-2.5m, 2.5-3.5m, 3.5-4.5m, 4.5-5.5m, 5.5-6.5m and 6.5-7.5m from the start point of the front wall in the greenhouse are 53-57 degrees, 48-52 degrees, 43-47 degrees, 38-42 degrees, 33-37 degrees, 28-32 degrees and 23-27 degrees respectively; the height from the greenhouse vertex to the indoor ground is 4.4-4.6m; the length of the inclined plane of the rear roof is 1.1-1.3m; the elevation angle between the top of the loam wall and the inner side of the roof in the greenhouse is 63-67 degrees; and a bottom angle of the loam wall in the greenhouse is 80-90 degrees.

The invention discloses a solar photovoltaic support suitable for windy and dusty areas and convenient for angle adjustment, belongs to the field of solar photovoltaic supports, can reduce the straight surface impact strength of fine sand in wind and reduce the possibility of damage to a solar photovoltaic panel, and when the wind and sand stop, a buffer shielding layer is matched with a spiral elastic piece to quickly roll and reset. Daily photovoltaic operation is maintained, and the angle of a connecting frame and the solar photovoltaic panel is changed, so that the windward area of the solar photovoltaic panel impacted by wind and sand is reduced, the possibility that the solar photovoltaic panel is directly impacted by sundries such as zip-top cans is reduced, the possibility that the solar photovoltaic panel is damaged is reduced, and property loss is reduced. When wind and sand completely stop, a connecting frame and the solar photovoltaic panel are subjected to angle resetting through an elastic supporting frame, a buffer shielding layer is tightly attached to the solar photovoltaic panel all the time in the sandstorm process, dust residues on the surface of the solar photovoltaic panel are reduced, and the normal light receiving condition of the solar photovoltaic panel is maintained.

The invention provides a box type transformer substation. The box type transformer substation comprises a main box and an underground box arranged on the lower portion of the main box in a connected mode. A rotating shaft is arranged on the upper portion of the main box and connected with a rotating motor, and a solar cell panel is arranged on the rotating motor. An internal control device is arranged on the inner side wall of the main box, a ventilation fan is arranged on the outer side wall of the main box, and the main box is communicated with the underground box through an internal door. A general control device, a low-voltage switch chamber, a transformer chamber and a high-voltage switch chamber are arranged inside the underground box. The general control device is connected with the low-voltage switch chamber, the transformer chamber and the high-voltage switch chamber through transmission circuits, the general control device is connected with the internal control device through a control circuit, and a camera is arranged at the top of the underground box. The box type transformer substation can well solve the problem that because an existing box type transformer substation is frequently high in noise, people are disturbed.

A diffractive optical element 1 has a diffraction grating which multiplexes the light beam of the different wavelength, and the diffraction grating is structured by a binary structure in which the diffraction surface top part 2 and the diffraction surface bottom part 4 repeat the concave and convex shape through a rising surface 3 part along the optical axis direction P, and the diffraction surface top part and the diffraction surface bottom part are inclined to the rising surface part. By this diffractive optical element 1, the diffraction angle of the light beam is maintained, and the diffraction efficiency of the light beam can be improved. Then, by using this diffractive optical element 1, the optical communication module in which, while the separation angle of the light beam of the different wavelength is maintained, the signal receiving performance is increased, can be provided.

The invention discloses a northern vegetable sunlight greenhouse with three layers of greenhouse films. The northern vegetable sunlight greenhouse comprises a cold-proof layer, a front wall, a day lighting roofing, an internal steel pipe layer, a greenhouse top point, a rear roofing, a cob wall, a cotton quilt and an electric rolling blinds machine, wherein the orientation of the sunlight greenhouse is 5-8 degrees westwards; the day lighting roofing comprises the internal steel pipe layer, a middle steel pipe layer and an external steel pipe layer; the span from the front wall to the cob wall is 7-9m; the front wall is taken as a starting point in the greenhouse; for positions of 0.5-1.5m, 1.5-2.5m, 2.5-3.5m, 3.5-4.5m, 4.5-5.5m, 5.5-6.5m and 6.5-7.5m from the front wall, the corresponding roofing day lighting angles alphas are 53-57 degrees, 48-52 degrees, 43-47 degrees, 38-42 degrees, 33-37 degrees, 28-32 degrees and 23-27 degrees; the height from the greenhouse top point to an indoor ground plane is 4.4-4.6m; the section of the cob wall is trapezoidal; the elevation angle between the top part of the cob wall and the interior of the greenhouse roofing is 63-67 degrees; and the base angle located in the greenhouse is 80-90 degrees.

The invention discloses a method for auxiliary etching the conical array silicon surface through pine structure porous copper. Firstly the pine wood is sintered in the non-oxidizing atmosphere to obtain porous carbon having a pine structure, then the porous carbon is immersed in a copper nitrate solution, and porous copper having the pine structure is obtained after drying and anaerobic sintering;and the porous copper acts as the catalyst and is put on the silicon plane, monocrystalline silicon is immersed in a corrosive, and the silicon surface is corroded under the catalytic auxiliary effect of the copper so as to form the conical array silicon surface having the opposite convex-concave structure of that of the porous copper. According to the manufactured silicon surface conical array structure, the microscopic structure of the pine is topological, high degree of learning from the nature is realized and the excellent hydrophobicity and the photon receiving capacity can be acquired;and the acquired conical array silicon surface has the advantages of further narrow top part and smaller contact area with the water so that the adhesion of the silicon surface to the water can be further reduced and the better hydrophobicity can be acquired.

A display panel and a display device are provided by the present disclosure, wherein the display panel includes a pixel region having a plurality of pixels. The pixel region includes a first area and a second area, wherein the transmittance of the second area is greater than the transmittance of the first area. The second area has a coverage, and a width of the coverage is not less than 0.43 millimeters.

The invention discloses a winter vegetable sunlight greenhouse in alpine regions. The winter vegetable sunlight greenhouse comprises a cold-proof layer, a front wall, a daylighting roofing, a greenhouse top, a rear roofing, a cob wall, a biomass counter-burning multipass low-carbon and energy-saving hot water boiler, a hot water outlet pipe, a heat sink, a water return pipe, a chimney, a cotton quilt and an electric roller shutter machine, wherein the front wall is taken as a starting point; the corresponding roofing daylighting angles are 53 DEG -57 DEG, 48 DEG -52 DEG, 43 DEG -47 DEG, 38 DEG -42 DEG, 33 DEG -37 DEG, 28 DEG -32 DEG and 23 DEG -27 DEG respectively at the distances of 0.5 m -1.5m, 1.5 m -2.5m, 2.5 m -3.5m, 3.5 m -4.5m, 4.5 m -5.5m, 5.5 m -6.5m and 6.5 m -7.5m from the front wall; a distance from a perpendicular line of the greenhouse top to the interior of the cob wall is 0.5-1.5m; a height from the greenhouse top to an indoor ground plane is 4.4-4.6m; an elevation angle between a top part of the cob wall and the interior of the greenhouse roofing is 63 DEG -67 DEG; a base angle located in the greenhouse is 80 DEG -90 DEG; and the biomass counter-burning multipass low carbon and energy-saving hot water boiler is arranged in the greenhouse.

The invention provides a slot type solar energy collection device based on a black body absorption principle. A rotary table fixedly-connected gear is installed on the lower portion of a heat collection device rotary table of the device, a paraboloid heat collection tube joint shaft drives two heat collection tube supporting columns and a parabolic reflector to rotate axially, a heat collection tube is installed on the two heat collection tube supporting columns, a water pump is communicated with the heat collection tube through two flexible water tubes to form a water circulation passage, a gap is formed in the side face of the heat collection tube which is of a double circular tube sleeve cavity structure, and an interlayer of a double circular tube is filled with a nanofluid medium; a photoelectric sensor and a temperature sensor transmit a sensed signal to a control integrated box. The problems that for an existing slot type solar energy collection heat collection technology, the heat collection tube heat collection efficiency is low, the heat transmission efficiency is low, and the heat loss is large are solved. Accordingly, the collection efficiency and transmission efficiency are improved, and by means of an aerogel insulating layer, heat loss due to radiation is reduced; by means of a light chasing system and a temperature control system, the whole adaptability of the device is improved.

The invention discloses a passivated emitter region back surface partial diffused crystalline silicon solar cell preparation method. The method includes the following steps of: silicon wafer front surface inverted pyramid structure production; silicon wafer back surface partial region boron diffusion; silicon wafer front surface gate interdigital electrode heavy phosphorous diffusion; silicon wafer front surface light phosphorus diffusion; silicon wafer front surface silicon oxide (SiO2) anti-reflection passivation layer deposition; silicon wafer back surface silicon oxide (SiO2) passivation layer deposition; silicon wafer back surface electrode contact hole photoetching; silicon wafer front surface gate interdigital electrode lead hole photoetching, silicon wafer front surface gate interdigital electrode evaporation; silicon wafer back surface aluminum electrode evaporation; silicon wafer front surface electrosilvering and annealing; and solar cell formation. With the method of the invention adopted, the front surface of a cell is of an inverted pyramid structure, and the light receiving effect of the cell is better than that of an ordinary texturized surface structure, and the cell has very low reflectivity, and therefore, the Jsc of the cell can be improved.

The invention discloses an intelligent solar distributed power station illumination energy-saving system comprising a plurality of portal frames arranged on a pavement. Cross-beam frames are erected on the tops between the adjacent portal frames; a plurality of pedestal support frames are arranged on the cross-beam frames; a plurality of bearing frames are arranged on the pedestal support frames; a plurality of condensation assemblies are arranged uniformly in the bearing frames and are connected with photoelectric conversion devices; the photoelectric conversion devices are connected with electric energy storage devices connected with light bands; and the light bands are arranged at the bottoms of the portal frames. Switch controllers are arranged between the light bands and the electric energy storage devices. According to the invention, with the condensation assemblies having high conversion efficiency, the equipment size is reduced; little setting geographic restriction exists; power transmission can be carried out conveniently; power losses are reduced; and the usage rate is improved.

The invention belongs to an illuminance detection device for photoelectric components and in particular discloses an intermittent illuminance detection device. The intermittent illuminance detection device comprises a pedestal, wherein a photoelectric component opening / closing device for placing a photoelectric component is arranged at the bottom of the pedestal; and a driver for driving the photoelectric component opening / closing device to rotate and driving the photoelectric component opening / closing device to extend out of the bottom surface of the pedestal is arranged on the pedestal. Theintermittent illuminance detection device has the advantages that: when the photoelectric component is detected, the illuminated surface of the photoelectric component is not sheltered completely, and when the photoelectric component is not detected, the illuminated surface of the photoelectric component is sheltered completely, so that the accuracy of the detection result is effectively improved; and at the same time, the intermittent illuminance detection device has certain dustproof and rainproof functions, so that overlong illumination duration of the photoelectric component is avoided and the service life of the photoelectric component is guaranteed; in addition, the intermittent illuminance detection device has a better self-checking function, so when the external illuminance does not need to be detected, the illuminated component can be placed in a sealed darkroom, and the normal using performance of the photoelectric component is guaranteed by adopting a standard light source to perform self-checking and correction.

The invention discloses an intelligent solar distributed power station illumination energy-saving system comprising a plurality of portal frames arranged on a pavement. Cross-beam frames are erected on the tops between the adjacent portal frames; a plurality of pedestal support frames are arranged on the cross-beam frames; a plurality of bearing frames are arranged on the pedestal support frames; a plurality of condensation assemblies are arranged uniformly in the bearing frames and are connected with photoelectric conversion devices; the photoelectric conversion devices are connected with electric energy storage devices connected with light bands; and the light bands are arranged at the bottoms of the portal frames. Switch controllers are arranged between the light bands and the electric energy storage devices. According to the invention, with the condensation assemblies having high conversion efficiency, the equipment size is reduced; little setting geographic restriction exists; power transmission can be carried out conveniently; power losses are reduced; and the usage rate is improved.

The invention relates to a plant bonsai light shaping guiding system and method. The system comprises a flowerpot pose adjusting mechanism, a ring light intensity detection array, an image acquisitiondevice, a bonsai pose evaluation software module and a visual correction decision software module, wherein the image acquisition device is arranged above the flowerpot pose adjusting mechanism for acquiring a vertical view of the bonsai; the bonsai pose evaluation software module runs on a control microcomputer for analyzing the vertical view acquired by the image acquisition device to obtain differences between the current bonsai state and a state set by a user; and the visual correction decision software module runs on the control microcomputer for using the light intensity information obtained by the ring light intensity detection array and combining the difference information obtained by the bonsai pose evaluation software module to calculate and obtain the horizontal rotation angle,the lifting angle and the residence time of the flowerpot pose adjusting mechanism. In comparison with the prior art, through the flowerpot pose adjusting mechanism, parts of the bonsai receive different light, coiled branches with rich ornamental effects are thus generated, and particularly, growth of the plant in the pot in a room with insufficient light is also facilitated.

The invention discloses a passivated emitter region back surface partial diffused crystalline silicon solar cell preparation method. The method includes the following steps of: silicon wafer front surface inverted pyramid structure production; silicon wafer back surface partial region boron diffusion; silicon wafer front surface gate interdigital electrode heavy phosphorous diffusion; silicon wafer front surface light phosphorus diffusion; silicon wafer front surface silicon oxide (SiO2) anti-reflection passivation layer deposition; silicon wafer back surface silicon oxide (SiO2) passivation layer deposition; silicon wafer back surface electrode contact hole photoetching; silicon wafer front surface gate interdigital electrode lead hole photoetching, silicon wafer front surface gate interdigital electrode evaporation; silicon wafer back surface aluminum electrode evaporation; silicon wafer front surface electrosilvering and annealing; and solar cell formation. With the method of the invention adopted, the front surface of a cell is of an inverted pyramid structure, and the light receiving effect of the cell is better than that of an ordinary texturized surface structure, and the cell has very low reflectivity, and therefore, the Jsc of the cell can be improved.

The invention discloses an equipment box floor mounting and solar power supply method. According to the method, a concrete foundation, a foundation bolt, a horizontal sealed box body, a fixing bolt, arotatable solar support, a solar panel and a power supply line are involved, after a foundation pit is excavated between rail tracks, the concrete foundation is poured, the foundation bolt is arranged to fix the horizontal sealing box body, newly added equipment is arranged in the horizontal sealed box body, the rotatable solar support and the solar panel are fixed on the top of the horizontal sealed box body, the rotatable solar support can obtain the best solar light receiving effect through rotating to adjust angles, and the solar panel supplies power to the equipment in the horizontal sealed box body through the power supply line. According to the method, the train safety protection distance of the newly added equipment between the rail tracks is met, the influence of wind speed and rainwater on the newly-added equipment and train operation is avoided, the angle of the solar panel is adjusted through the rotatable solar support, the light receiving effect of the solar panel is improved while power is supplied for the equipment, and the problem of power supply of the newly added equipment between the rail tracks is solved.

The invention provides a slot type solar energy collection device based on a black body absorption principle. A rotary table fixedly-connected gear is installed on the lower portion of a heat collection device rotary table of the device, a paraboloid heat collection tube joint shaft drives two heat collection tube supporting columns and a parabolic reflector to rotate axially, a heat collection tube is installed on the two heat collection tube supporting columns, a water pump is communicated with the heat collection tube through two flexible water tubes to form a water circulation passage, a gap is formed in the side face of the heat collection tube which is of a double circular tube sleeve cavity structure, and an interlayer of a double circular tube is filled with a nanofluid medium; a photoelectric sensor and a temperature sensor transmit a sensed signal to a control integrated box. The problems that for an existing slot type solar energy collection heat collection technology, the heat collection tube heat collection efficiency is low, the heat transmission efficiency is low, and the heat loss is large are solved. Accordingly, the collection efficiency and transmission efficiency are improved, and by means of an aerogel insulating layer, heat loss due to radiation is reduced; by means of a light chasing system and a temperature control system, the whole adaptability of the device is improved.