CN202188424U - Reflector type sunlight guider - Google Patents
Reflector type sunlight guider Download PDFInfo
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- CN202188424U CN202188424U CN2010206688440U CN201020668844U CN202188424U CN 202188424 U CN202188424 U CN 202188424U CN 2010206688440 U CN2010206688440 U CN 2010206688440U CN 201020668844 U CN201020668844 U CN 201020668844U CN 202188424 U CN202188424 U CN 202188424U
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- sunlight
- sensitization
- mirror
- reflective mirror
- acquisition sensor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/10—Photovoltaic [PV]
Abstract
The utility model discloses a reflector type sunlight guider, which belongs to the technical field of solar energy application. The sunlight guider can automatically track sunlight, adjust angles of a reflector and transmit the sunlight with largest reflecting area, a transmission light path is vertically downwards, and the sunlight can be emitted to a matched second-grade direction reflector at fixed position, then reflected to a three-grade direction reflector and transmitted indoors through a diffusion device. The sunlight guider comprises three two-side reflectors, a fixed reflector, a light collection reflecting transmission system, a sensing detection sensor, a tracking control system, a mechanical transmission device, a sunlight conversion electric energy system, a direction limit switch, a transparent flat plate, a ventilator and a semispherical cylindrical transparent protection cover. The sunlight conversion electric energy system is formed by a photovoltaic battery assembly, a storage battery, a controller and a driving load. The sunlight guider is suitable for high-rise buildings and has the advantages of being long in sunlight transmission distance, low in cost and high in light collection efficiency and saving optical fibers. Roof sunlight is utilized to improve light in the high-rise buildings and enable the inside of the high-rise buildings to be as bright as the outside.
Description
Technical field:
The utility model discloses a kind of sunlight and follow the trail of and pass through the lighting device of reflective mirror transmission sunlight automatically, belong to application of solar.
Background technology:
Illumination is a demand of human consumption most energy.According to statistics, the illumination energy consumption of developed country accounts for more than 9% of total energy consumption, and the illumination energy consumption of China developed regions accounts for 6%～9% of total energy consumption.With the U.S. is example, and the every day flower expense in illumination accounts for about 1/4 of whole generated energy up to more than 100,000,000 dollars, and in electric consumption on lighting, really is used for luminously only 25%, and all the other have then become heat energy.
As everyone knows, sunshine is the lamp the most typical, that energy is the strongest, and inexhaustible.But in fact; Only have sunshine seldom to pass through windowpane, skylight, for people are used as room lighting, therefore further the development and use sunshine not only has great potentiality; Can be effectively energy-conservation, also meet the modern life theory of human pursuing high quality quality of life and living environment simultaneously.
Therefore sunlight optical fibre daylighting lighting engineering is one of external research focus owing to have advantages such as system bulk is small and exquisite, lighting system is special for a long time always.This technology is through collective optics highly effective gathering sunshine, by the optical fiber of softness sunshine is reached any required place easily and use, and for improving lighting efficiency, complete machine also is equipped with in real time, the device of the accurate tracking sun.The utility model applicant has also carried out long-term deep research to this problem; Its core technology achievement once submitted to application number to be to State Intellectual Property Office: 200710022259.6,200810196402.8 multinomial patent applications, 200720037444.8 " positive electricity lighting devices " of wherein having authorized disclose a kind of by the optically focused lighting device, drive mechanical driving device that the optically focused lighting device rotates, control mechanical driving device optical signal feedback processing circuit, transmit the lighting equipment that the light-sensitive detector of detectable signal is formed to optical signal feedback processing circuit.The concrete condition of this device can be referring to disclosed patent document; There is the basic process of lightseeking missile control to be: when the sensitive detection parts perception sunshine angle of incident light in the light-sensitive detector changes; To send corresponding signal to follow-up control circuit; Signal is after comparison, processing and amplifying in follow-up control circuit, and the control mechanical transmission mechanism reaches perfect condition to the respective direction running of adjustment incident ray until the angle of incidence of sunlight degree.
Though the utility model applicant is through the successful tackling key problem to multinomial technology such as optically focused, tracking, biography light; Make the ratio of performance to price from motion tracking sun lighting equipment of development voluntarily be in the leading level in the world; But because this device is all very high to long distance, low-loss transmission performance and the low-cost manufacturing technique requirement of optical fiber; And the transmission wavelength of particular fiber is restricted, and the domestic households ability to shoulder economically is limited in addition, therefore still fails to obtain at home large scale application.
Summary of the invention:
Based on the appeal situation; The purpose of the utility model is: avoid adopting in the above-mentioned technology high-transmission performance of biography light optical fiber existence and the contradiction of price; A kind of distance, high efficiency, full spectrum, low-cost reflective mirror sunlight guider of gathering and transmitting sunshine grown proposed; Thereby make its suitable national conditions, be able to promote.
In order to achieve the above object; A kind of reflective mirror sunlight guider basic technical scheme that the utility model is gathered sunlight is: through being provided with the sensitization acquisition sensor, the direction limit switch that detect the sunshine position, carrying control instruction by the control system to the motor of mechanical driving device; Control drives two-sided reflective mirror and does between east and westly to rotate adjustment to, North and South direction, will gather maximum area and converge sunlight reflected and be transferred on the assigned address; The motor power supply derives from the electric energy that solar-energy photo-voltaic cell transforms.This device is transformed electric energy system, direction limit switch, transparent plate, ventilator, the cylindrical transparent shield of hemisphere and base and is formed by three two-sided reflective mirrors, fixed counter-mirror, daylighting reflection transmission system, sensitization acquisition sensor, Tracing Control system, mechanical driving device, sunlight; Wherein be that three two-sided reflective mirrors are approximate parastates of equidirectional rotation; Described daylighting reflection transmission system comprises three two-sided reflective mirrors, fixed counter-mirror, photoconductive tube, transparent plate; Described sensitization acquisition sensor is ambient light sensor, horizontal sensitization acquisition sensor and vertical sensitization acquisition sensor; Tracing system comprises sunshine tracing sensor, the full-automatic cyclelog of microcomputer and mechanical driving device; During this device busy, the brightness of surround lighting sensitization acquisition sensor ambient light has judged whether the sun with this; Horizontal sensitization acquisition sensor provides sun east-west direction positional information to the control system, the detection of the position of sun through horizontal sensitization acquisition sensor, drive reflective mirror around the motor I axle stand treat, the adjustment of Xiping face orientation angle; Transparent plate is equipped with vertical sensitization acquisition sensor below base; To the control system sun North and South direction positional information is provided; Through vertical sensitization acquisition sensor to position of sun and the reverberation of reflection towards detection; Driving reflective mirror regulates the reflection angle of reflective mirror automatically, and makes the reflective mirror reflected light path vertically downward around II axle work south, north short transverse angle adjustment; And about fixed counter-mirror, hold and lateral location, the limit switch of two correspondences respectively is housed; Thereby realize the motion adjustment of any space angle that the reflective mirror completion tracking sun is required automatically, working stability is reliable, thereby further improves the complete machine performance; Make reflective surface area maximization delivery optics vertically downward; And can make on optic path to the second fixed counter-mirror; Reflex to the 3rd fixed counter-mirror again, and can keep and reflex to again on a plurality of control reflective mirrors, sunlight is transferred to indoor through diffusing globe again.Its mechanical driving device is: the I spindle motor is directly installed on the electric machine support center, and flat key and U-shaped frame through I motor shaft core are connected, and clamper is connected on the U-shaped frame with screw; Two-sided reflective mirror is contained on the clamper, and the II spindle motor is installed in U-shaped frame side, and the II spindle motor connects sprocket wheel by flat key; Connect two-sided reflective mirror through chain, fixed counter-mirror is installed in top to the inside, the base north with screw, and base inner wall is equipped with photoconductive tube; Transparent plate is loaded onto in the base bottom; Cylindrical transparent shield of hemisphere and ventilator are contained in base top, and base is contained on the bracing frame, and bracing frame is connected with foundation bolt with roof; In position, the fixed counter-mirror left and right sides; Two east-west direction A, B limit switch are housed, and the sprocket wheel lateral location is equipped with two North and South direction A, B limit switch, and horizontal sensitization acquisition sensor and surround lighting sensitization acquisition sensor are installed on the U-shaped frame; Vertical sensitization acquisition sensor is housed on the transparent plate, and photovoltaic cell component, battery, the full-automatic cyclelog of microcomputer are installed on the bracing frame; Sunlight transforms the electric energy system and is made up of photovoltaic cell component, battery, controller, driving load.
Further improvement on the utility model technique scheme basis is:
Described reflective mirror is the cold light reflector face, and its material is metallic aluminium, stainless steel, glass, plastics, and working surface must pass through the processing of vacuum plating silver film system mirror; Reflective mirror is that plane mirror also can be the concave curved surface light gathering reflector or convex surface expands the light reflective mirror.
Described transparent plate is float glass process white glass or diamond white glass, and the ring-band shape Fresnel lens assembled flat of acrylic material.
To be surround lighting sensitization acquisition sensor, horizontal sensitization acquisition sensor and vertical sensitization acquisition sensor convert the solar energy signal of four corners of the world direction to the signal of telecommunication in described Tracing Control system; Central processing circuit: after the signal of sun light tracking sensor gathered, behind the operational amplification circuit amplifying signal, be transferred to central processing unit, provide after the central processing unit analysis and control signal to the action drives circuit; The action drives circuit: be made up of driver, limit switch, relay and motor, the control signal that central processing unit provides is amplified the rear drive relay through driver, by relay control motor action.
What deserves to be mentioned is: in order to prevent dust accumulation, the cylindrical transparent shield of hemisphere is housed, its material is acrylic or PC+UV light-passing board, and the certain thickness light that prevents of the surperficial one deck that is covered at least reflects the fluorine series antireflection film of usefulness from the teeth outwards.
The beneficial effect of the utility model is: its light path of reflective mirror reflective surface area maximization is all the time vertically towards transmission down; And can make on optic path to the second fixed counter-mirror; Reflex to again on the 3rd fixed counter-mirror; And can keep and reflex to again on a plurality of control reflective mirrors, sunlight is transferred to indoor through diffusing globe again; Make the collection area of light obtain the utilization of maximum efficiency, effectively reduce cost; Facility is easy for installation flexibly, can adapt to the needs that various buildings form, and especially can be applied to the skyscraper building, utilizes roof sunlight to improve the light in the high building.In sum, the utility model can not only transmit visible light, can also transmit infrared light, ultraviolet light, has therefore really realized the full spectrum utilization of sunshine; It is scientific and reasonable to have design, is fit to the large tracts of land daylighting demand of various buildings, simultaneously economic and practical, and the daylighting effect is high.Be the complete daylighting solution of a cover, will produce high social and economic benefit after the popularization.
Description of drawings:
Fig. 1 is that reflective mirror sunlight guider total reflection form structure is faced schematic views;
Fig. 2 is that reflective mirror sunlight guider total reflection form structure is overlooked schematic views;
The specific embodiment:
Shown in Fig. 1-2, a kind of structure and operation principle of facility have been illustrated, the vertical sensitization acquisition sensor 1 among the figure, clamper 2, U-shaped frame 3; North-south A limit switch 4, photovoltaic cell 5, the motor 6 of I axle, photoconductive tube 7, the cylindrical transparent shield 8 of hemisphere; Horizontal sensitization acquisition sensor 9, fixed counter-mirror 10, the back two-sided reflective mirror 11, north-south B limit switch 12, in two-sided reflective mirror 13; Before two-sided reflective mirror 14, sprocket wheel 15, the motor 16 of II axle, chain 17, transparent plate 18; Base 19,21, the three fixed counter-mirrors 22 of 20, the second fixed counter-mirrors of skyscraper, ventilator 23; The full-automatic cyclelog 24 of microcomputer, battery 25, surround lighting sensitization acquisition sensor 26, east-west direction A limit switch 27, east-west direction B limit switch 28; The sun 29, bracing frame 30, doubly-linked sprocket wheel 31, diffusing globe 32, electric machine support 33.This shows: a kind of reflective mirror sunlight guider comprises that mainly three two-sided reflective mirrors, fixed counter-mirror, daylighting reflection transmission system, sensitization acquisition sensor, Tracing Control system, mechanical driving device, sunlight transform electric energy system, direction limit switch, transparent plate, ventilator, the cylindrical transparent shield of hemisphere and base and forms.
Two-sided reflective mirror 11,13,14 is installed on the clamper 2, and clamper can be regulated arbitrarily according to the size and the shape of reflective mirror, gathers maximum area and converges sunlight, with the sunlight reflected delivery optics vertically downward; And can make on optic path to the second fixed counter-mirror 21, reflex to the 3rd fixed counter-mirror 22 again, and can keep and reflex to again on the multistage direction control reflective mirror, sunlight is transferred to indoor through diffusing globe 32 again.
The sensitization acquisition sensor is to be divided into three groups at the sensor that is provided with detection sunshine position: surround lighting sensitization acquisition sensor 26, horizontal sensitization acquisition sensor 9, vertical sensitization acquisition sensor 1; The brightness of surround lighting sensitization acquisition sensor 26 ambient light has judged whether the sun with this; Horizontal sensitization acquisition sensor 9 provides sun east-west direction positional information to the control system, the detection of the position of sun through horizontal sensitization acquisition sensor, drive reflective mirror around the motor 6 of I axle stand treat, the adjustment of Xiping face orientation angle; Transparent plate 18 is equipped with vertical sensitization acquisition sensor 1 below reflective mirror; To the control system sun North and South direction positional information is provided; Through the position of sun of vertical sensitization acquisition sensor to reflection; Reverberation towards detection, drive reflective mirror around the motor 16 of II axle do south, the reflective mirror reflection angle is regulated automatically to angle adjustment in the north, and the reflected light path that makes reflective mirror is vertically downward; And the lateral location that east-west direction A, B limit switch 27,28 and U-shaped frame 3 are housed at fixed counter-mirror 10 two ends is equipped with north-south A, B limit switch 4,12; Thereby realize the motion adjustment of any space angle that the reflective mirror completion tracking sun is required automatically; Working stability is reliable, thereby further improves the complete machine performance; Make reflective surface area maximization delivery optics vertically downward; And can make on optic path to the second fixed counter-mirror 21; Reflex to the 3rd fixed counter-mirror 22 again, and can keep and reflex to again on a plurality of control reflective mirrors, sunlight is transferred to indoor through diffusing globe 32 again.
To be horizontal sensitization acquisition sensor 9 convert the solar energy signal of four corners of the world direction to the signal of telecommunication with vertical sensitization acquisition sensor 1 in the Tracing Control system; Central processing circuit: after the signal of sun light tracking sensor gathered, behind the operational amplification circuit amplifying signal, be transferred to central processing unit, provide after the central processing unit analysis and control signal to the action drives circuit; The action drives circuit: be made up of driver, limit switch, relay and motor, the control signal that central processing unit provides is amplified the rear drive relay through driver, by relay control motor action; The Tracing Control system can use the prior art of patents such as " sunlight collector control system " patent No. 200910026741.6 and " a kind of control method of solar condenser " patent No. 200910031297.7.
Mechanical driving device comprises motor 6, the motor 16 of II axle, sprocket wheel 15, chain 17, the doubly-linked sprocket wheel 31 of I axle; The motor 6 that electric machine support 33 is installed in the I axle U-shaped frame 3 that is connected; The motor 16 of II axle is connected on the U-shaped frame 3; The doubly-linked sprocket wheel 31 II axle that is connected, doubly-linked sprocket wheel 31 connects sprocket wheels 15 through chain 17, and two-sided reflective mirror 11,13,14 interconnects through chain 17; Two-sided reflective mirror 11,13,14, be installed on the clamper 2, make two-sided reflective mirror 11,13,14 flash back the sunlight delivery optics vertically downward with maximum area; And can make on optic path to the second fixed counter-mirror 21, continue then to reflex to the 3rd fixed counter-mirror 22 once more, and can keep and reflex to again on the multistage direction control reflective mirror, sunlight is transferred to indoor through diffusing globe 32 again; Install and fix reflective mirror 10 in a northerly direction at base 19, and in its left and right sides east-west direction A is housed, B limit switch 27,28, and North and South direction A, B limit switch 4,12 are housed in sprocket wheel 15 lateral location; U-shaped frame 3 is installed horizontal sensitization acquisition sensor 9 and surround lighting sensitization acquisition sensor 26, and transparent plate 18 is installed in base 19 belows, and vertical sensitization acquisition sensor 1 is housed on the transparent plate 18; Like this; When position of sun changed, the sunshine tracing sensor passed to the Tracing Control system with the position of sun signal, the action of driving device transmission device; Be that motor 6 is done the adjustment of East and West direction position through U-shaped frame 3 around the axis of I axle; While motor 16, and under the driving of sprocket wheel 15 chains 17, two-sided reflective mirror 11,13,14 daylightings reflection transmission system is also done the adjustment of inclination angle, north-south around the axis of II axle; The result of its compound motion makes the daylighting face of lighting system keep the most effectively daylighting reflection all the time over against the sun.
Sunlight transforms the electric energy system and is made up of photovoltaic cell component 5, battery 25, controller; By solar photovoltaic cell panel assembly 5 solar radiation is converted into electric energy; As electricity generation system; Let the cell panel power supply charge a battery through the control system, when battery feed acquires a certain degree, the automatic protective system action of establishing in the control system; Cell panel is cut off the electricity supply automatically, carries out protection automatically; As motor-driven.
Facts have proved, the not power consumption of a kind of reflective mirror sunlight guider, long distance, high efficiency, full spectrum, gather at low cost and transmit sunshine, and technology is simple, and is easy to utilize.
The utility model provides a kind of thinking of reflective mirror sunlight guide structure principle; Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model principle, can also make some improvement and variation, these improvement and variation also should be regarded as the utility model and protection domain.
Claims (6)
1. a reflective mirror sunlight guider is mainly transformed electric energy system, direction limit switch, transparent plate, ventilator, the cylindrical transparent shield of hemisphere and base and is formed by three two-sided reflective mirrors, fixed counter-mirror, daylighting reflection transmission system, sensitization acquisition sensor, Tracing Control system, mechanical driving device, sunlight; Wherein be that three two-sided reflective mirrors are approximate parastates of equidirectional rotation; Described daylighting reflection transmission system comprises three two-sided reflective mirrors, fixed counter-mirror, photoconductive tube, transparent plate; Described sensitization acquisition sensor is ambient light sensor, horizontal sensitization acquisition sensor and vertical sensitization acquisition sensor; The Tracing Control system comprises sunshine tracing sensor, the full-automatic cyclelog of microcomputer and mechanical driving device; It is characterized in that: through being provided with the sensitization acquisition sensor, the direction limit switch that detect the sunshine position, carrying control instruction to the motor of mechanical driving device by the control system; Control drives two-sided reflective mirror and does between east and westly to rotate adjustment to, North and South direction, will gather maximum area and converge sunlight reflected and be transferred on the assigned address; The motor power supply derives from the electric energy that solar-energy photo-voltaic cell transforms.
2. according to the said reflective mirror sunlight guider of claim 1, it is characterized in that: the I spindle motor is directly installed on the electric machine support center, and flat key and U-shaped frame through I motor shaft core are connected; Clamper is connected on the U-shaped frame with screw, and two-sided reflective mirror is contained on the clamper, and the II spindle motor is installed in U-shaped frame side; The II spindle motor connects sprocket wheel by flat key, connects two-sided reflective mirror through chain, and fixed counter-mirror is installed in top to the inside, the base north with screw; Base inner wall is equipped with photoconductive tube, and transparent plate is loaded onto in the base bottom, and cylindrical transparent shield of hemisphere and ventilator are contained in base top; Base is contained on the bracing frame; Bracing frame is connected with foundation bolt with roof, in position, the fixed counter-mirror left and right sides, two east-west direction A, B limit switch is housed; The chain wheel side is equipped with two North and South direction A, B limit switch; Horizontal sensitization acquisition sensor and surround lighting sensitization acquisition sensor are installed on the U-shaped frame, vertical sensitization acquisition sensor is housed on the transparent plate, photovoltaic cell component, battery, the full-automatic cyclelog of microcomputer are installed on the bracing frame.
3. according to the said reflective mirror sunlight guider of claim 1, it is characterized in that described sunlight transforms the electric energy system and is made up of photovoltaic cell component, battery, controller and driving load.
4. according to the said reflective mirror sunlight guider of claim 1, it is characterized in that described reflective mirror is the cold light reflector face, its material is metallic aluminium, stainless steel, glass or plastics, and working surface must pass through the processing of vacuum plating silver film system mirror.
5. according to the said reflective mirror sunlight guider of claim 1, it is characterized in that described Tracing Control system is horizontal sensitization acquisition sensor and converts the solar energy signal of four corners of the world direction to the signal of telecommunication with vertical sensitization acquisition sensor; Central processing circuit: after the signal of sun light tracking sensor gathered, behind the operational amplification circuit amplifying signal, be transferred to central processing unit, provide after the central processing unit analysis and control signal to the action drives circuit; The action drives circuit: be made up of driver, limit switch, relay and motor, the control signal that central processing unit provides is amplified the rear drive relay through driver, by relay control motor action.
6. according to the said reflective mirror sunlight guider of claim 1; It is characterized in that said reflective surface area maximization delivery optics vertically downward; And can make on optic path to the second fixed counter-mirror; Reflex to the 3rd fixed counter-mirror again, and can keep and reflex to again on the multistage direction control reflective mirror, sunlight is transferred to indoor through diffusing globe again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206688440U CN202188424U (en) | 2010-12-20 | 2010-12-20 | Reflector type sunlight guider |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206688440U CN202188424U (en) | 2010-12-20 | 2010-12-20 | Reflector type sunlight guider |
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| Publication Number | Publication Date |
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| CN202188424U true CN202188424U (en) | 2012-04-11 |
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| CN2010206688440U Expired - Fee Related CN202188424U (en) | 2010-12-20 | 2010-12-20 | Reflector type sunlight guider |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106838814A (en) * | 2017-02-16 | 2017-06-13 | 吴东辉 | Sunlight reflectoscope |
| CN110161994A (en) * | 2019-05-30 | 2019-08-23 | 常州轻工职业技术学院 | A kind of building control system |
| US10892622B2 (en) | 2016-11-28 | 2021-01-12 | International Business Machines Corporation | Dynamic photovoltaic adaption for managing grid volatility using a photovoltaic harvester |
| CN113188096A (en) * | 2021-05-11 | 2021-07-30 | 陕西科技大学 | Device and method for sunlight directional composite reflection illumination at entrance and exit of tunnel |
| CN113985929A (en) * | 2021-10-26 | 2022-01-28 | 徐方杰 | Light detection feedback device based on sun tracking device |
-
2010
- 2010-12-20 CN CN2010206688440U patent/CN202188424U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10892622B2 (en) | 2016-11-28 | 2021-01-12 | International Business Machines Corporation | Dynamic photovoltaic adaption for managing grid volatility using a photovoltaic harvester |
| CN106838814A (en) * | 2017-02-16 | 2017-06-13 | 吴东辉 | Sunlight reflectoscope |
| CN106838814B (en) * | 2017-02-16 | 2021-05-11 | 陆腾蛟 | Sunlight reflecting lamp |
| CN110161994A (en) * | 2019-05-30 | 2019-08-23 | 常州轻工职业技术学院 | A kind of building control system |
| CN110161994B (en) * | 2019-05-30 | 2022-03-25 | 常州工业职业技术学院 | Building control system |
| CN113188096A (en) * | 2021-05-11 | 2021-07-30 | 陕西科技大学 | Device and method for sunlight directional composite reflection illumination at entrance and exit of tunnel |
| CN113188096B (en) * | 2021-05-11 | 2023-09-01 | 陕西科技大学 | Device and method for directional composite reflection illumination of sunlight at tunnel entrance and exit |
| CN113985929A (en) * | 2021-10-26 | 2022-01-28 | 徐方杰 | Light detection feedback device based on sun tracking device |
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Granted publication date: 20120411 Termination date: 20161220 |