CN112097213A - Intelligent light compensation solar optical fiber lighting system - Google Patents

Intelligent light compensation solar optical fiber lighting system Download PDF

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Publication number
CN112097213A
CN112097213A CN202010985914.3A CN202010985914A CN112097213A CN 112097213 A CN112097213 A CN 112097213A CN 202010985914 A CN202010985914 A CN 202010985914A CN 112097213 A CN112097213 A CN 112097213A
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China
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optical fiber
light
solar
lighting system
shaped support
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冯宇
安家澍
孟海彬
吴恺
颜浩民
赵泓旭
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Shenzhen Graduate School Harbin Institute of Technology
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Shenzhen Graduate School Harbin Institute of Technology
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S11/00—Non-electric lighting devices or systems using daylight
    • F21S11/007—Non-electric lighting devices or systems using daylight characterised by the means for transmitting light into the interior of a building
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/04—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for filtering out infrared radiation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/06—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for filtering out ultraviolet radiation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/40—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters with provision for controlling spectral properties, e.g. colour, or intensity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S30/00—Arrangements for moving or orienting solar heat collector modules
    • F24S30/40—Arrangements for moving or orienting solar heat collector modules for rotary movement
    • F24S30/42—Arrangements for moving or orienting solar heat collector modules for rotary movement with only one rotation axis
    • F24S30/425—Horizontal axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S50/00—Arrangements for controlling solar heat collectors
    • F24S50/20—Arrangements for controlling solar heat collectors for tracking
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S20/00—Supporting structures for PV modules
    • H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
    • H02S20/32—Supporting structures being movable or adjustable, e.g. for angle adjustment specially adapted for solar tracking
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/10—Controlling the intensity of the light
    • H05B45/12—Controlling the intensity of the light using optical feedback
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V2200/00—Use of light guides, e.g. fibre optic devices, in lighting devices or systems
    • F21V2200/10—Use of light guides, e.g. fibre optic devices, in lighting devices or systems of light guides of the optical fibres type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • 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
    • Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/47—Mountings or tracking
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

Abstract

The invention relates to an intelligent light compensation solar optical fiber lighting system. The invention relates to the technical field of indoor optical fiber lighting systems, which comprise a hexagonal turntable, a light sensor, a Fresnel lens, an optical fiber coupler, a U-shaped support, a charging integrated module, a lithium battery pack, a solar power generation panel, a dimming knob, a visual screen, a compensation LED lamp set, an indoor environment simulation black box, an Arduino controller, a digital light intensity sensor, optical fibers and a transmission mechanism, wherein the optical fiber coupler is arranged on the hexagonal turntable; the invention keeps the indoor illuminance stable; after the sunlight is introduced into the optical fiber, the indoor illumination is sensed through the light intensity sensor, and when the indoor illumination does not reach the required illumination, the automatic illumination compensation is immediately carried out by utilizing the electric light source. Extra electric energy is not required to be provided, and the solar cell panel, the charging integrated module and the storage battery are used for supplying power; through drive mechanism, cooperation light sensor realizes tracking the high accuracy of sun, improves the light collection rate.

Description

Intelligent light compensation solar optical fiber lighting system
Technical Field
The invention relates to the technical field of indoor optical fiber lighting systems, in particular to an intelligent optical compensation solar optical fiber lighting system.
Background
With the energy crisis and the ecological environment destruction, the environmental protection consciousness of people is gradually strengthened, the utilization of solar energy becomes the focus of scientific research, and China becomes the first world energy consumption major country in 2010 and accounts for 20.3% of the total world energy consumption. The solar energy generating capacity accounts for only 1 percent of the national energy consumption in China, and the main reason is that the solar energy conversion efficiency is low and is only 15 to 20 percent, and the solar power generation device is expensive in manufacturing cost.
In buildings such as large office buildings, because high-rise buildings shelter from each other, the lighting in the daytime is insufficient, and even in the daytime, workers need to use the electric energy lighting system for a long time, so that a large amount of electric energy is consumed. The sunlight optical fiber lighting system is a novel technology for directly transmitting outdoor light to the indoor space by using optical fibers for lighting, and reduces loss in energy conversion.
There are many problems with domestic fiber optic lighting systems, such as: the influence of weather factors is large, and the indoor illumination intensity changes at any time due to the fact that the outdoor illumination intensity changes along with the weather change. And in environments such as cloudy day, rainy day, night, indoor illuminance is extremely low, and the requirement of indoor illumination can not be satisfied in exclusive use, often still need use with the cooperation of LED lamp, additionally provides the electric energy.
The precision of the converged sunlight is not high, the spot size of the converged sunlight is far larger than that of the optical fiber under the common condition, and when the position of the sun changes, the center of the sunlight spot is easily deviated from the center of the optical fiber, so that the transmitted luminous flux is reduced, and the indoor illuminance is suddenly reduced.
The price of the products suitable for small-area indoor illumination of some domestic companies producing optical fiber illumination products, such as Shenzhen blue technology development limited company, Nanjing Jett new energy limited company and the like, is over 2 ten thousand yuan.
The required illuminance is difficult to control, and the patent of Liu rain \33411andthe like is 'a sunlight mixed illumination system for an underground station'; also the patent of "intelligent solar optical fiber laser hybrid lighting device and control method thereof" of Ming et al; or the patent of "solar cell and optical fiber lighting illumination system for automatically tracking sun" of dazzling et al, there is no related patent that can observe in real time and manually adjust the illumination required indoors at present.
Disclosure of Invention
The invention provides an intelligent optical compensation solar optical fiber lighting system, aiming at solving the problem of indoor lighting with poor light, carrying out automatic illumination compensation when the indoor illumination does not reach the required illumination and ensuring the stability of the indoor illumination, and providing the following technical scheme:
an intelligent optical compensation solar optical fiber lighting system comprises a hexagonal turntable, an optical sensor, a Fresnel lens, an optical fiber coupler, a U-shaped support, a charging integrated lithium battery pack, a solar power generation panel, a dimming knob, a visual screen, a compensation LED lamp bank, an indoor environment simulation black box, an Arduino controller, a digital light intensity sensor, optical fibers and a transmission mechanism;
the light sensor is arranged at the circle center of the hexagonal turntable and comprises a cross-shaped support and four photosensitive resistors, the four photosensitive resistors are respectively arranged in four quadrants divided by the cross-shaped support and are placed by being tightly attached to the cross-shaped support, the four photosensitive resistors are respectively connected in parallel with a constant value resistor with the same resistance value and are connected with an Arduino controller, and the Arduino controller is connected with a control transmission mechanism; the transmission mechanism comprises a motor, a speed reducer, a transmission shaft and a coupler, the Arduino controller controls the motor to rotate to drive the speed reducer, the transmission shaft and the coupler to rotate, the transmission mechanism is fixed on a U-shaped support, the U-shaped support is fixedly installed on a support, and the transmission mechanism drives the U-shaped support and the hexagonal rotary table;
the solar energy light source comprises a hexagonal turntable, wherein 4 Fresnel lenses are arranged in the hexagonal turntable, the 4 Fresnel lenses correspond to 4 optical fiber couplers, when sunlight is parallelly injected, parallel light is firstly converted into large light spots through the Fresnel lenses, then the large light spots pass through the optical fiber couplers, the optical fiber couplers are installed on a U-shaped support, each optical fiber coupler comprises a threaded sleeve, an aspheric convex lens, a threaded gland, a filter plate and an optical fiber sleeve, the aspheric convex lens is clamped and fixed with the threaded sleeve through the threaded gland, the filter plate is placed at the focus of the aspheric convex lens, and the optical fiber sleeve are fixed through a top wire through a threaded hole reserved in the sleeve;
the optical fiber connection compensation LED lamp bank, the Arduino controller connection control compensation LED lamp bank, the visual screen observation indoor environment simulation black box illumination value, the illumination change through the light adjusting knob, the solar power generation panel collection solar power generation output to the charging integration lithium battery pack, the charging integration lithium battery pack supplies power for the compensation LED lamp bank and the transmission mechanism;
digital light intensity sensor sets up the offside of going into the light mouth at indoor environment simulation black box, digital light intensity sensor connects Arduino controller and visual screen respectively, gathers illumination intensity through digital light intensity sensor.
Preferably, the compensation LED lamp group is formed by connecting 6 LED lamps in series and 3 series branches in parallel.
Preferably, the generated power of the solar power generation panel is 40W, and the generated power is input to the lithium battery pack through the UPS direct current module.
Preferably, adjust luminance knob adopts a 5K's potentiometre as adjust knob, and when the potentiometre knob rotated, the voltage change of middle pin, and the change value of voltage is detected to Arduino controller, adjusts indoor illuminance stable value.
Preferably, the lithium battery pack comprises a battery pack consisting of 4 series-connected 3 parallel-connected total 12 batteries.
Preferably, the UPS direct current module adopts a UPS-1228-12 direct current UPS power supply module.
Preferably, when the four photo resistors have the same resistance value, that is, the photo resistors face the sun.
Preferably, when four photo resistance's resistance value changed, the current value in the return circuit changed, and four photo resistance connect the same definite value resistance of a resistance in parallel respectively, convert current signal into voltage signal, pass to the Arduino controller with the signal again, controller control drive mechanism rotates through control motor, drives reduction gear, transmission shaft and shaft coupling and rotates, and drive actuating mechanism realizes adjusting well to sun.
Preferably, the filter plate selects a quartz lens with a light transmission wavelength of 400nm-760 nm.
Preferably, the digital light intensity sensor adopts a GY-30 digital light intensity sensor based on a BH1750FVI chip.
The invention has the following beneficial effects:
the invention keeps the indoor illuminance stable; after the sunlight is introduced into the optical fiber, the indoor illumination is sensed through the light intensity sensor, and when the indoor illumination does not reach the required illumination, the automatic illumination compensation is immediately carried out by utilizing the electric light source. Extra electric energy is not required to be provided, and the solar cell panel, the charging integrated module and the storage battery are used for supplying power to the whole system; tracking the sun with high precision; through drive mechanism, cooperation light sensor realizes tracking the high accuracy of sun, improves the light collection rate. The cost is low; the cost is only about 2500 yuan, if the area of the sunlight receiving plate and the number of light paths are increased, the cost is not greatly increased, and therefore the sunlight receiving plate has good economy. The invention can observe and manually adjust the indoor illuminance in real time; through the PWM dimming knob, the indoor illumination stable value under different environments can be adjusted, and the requirements under various conditions are met.
The invention designs sunlight collection, optical fiber light guide, optical compensation at the tail end of the optical fiber and solar charging, and the solar charging is utilized in sunny days, stored in a storage battery and supplied to the whole system; the sunlight gathering effect and precision are improved through the sun tracking system, harmful light is filtered out through the filter plate, sunlight is transmitted to the indoor through the optical fiber to be matched with the LED lamp for illumination, and the stability of the optical fiber is kept; according to the practical characteristics of office places, the required illuminance can be manually adjusted, and the device is suitable for different environments. The device has low manufacturing cost, stable operation and strong applicability, improves the solar energy utilization rate and effectively saves energy.
Drawings
FIG. 1 is a block diagram of an intelligent light-compensated solar fiber lighting system;
FIG. 2 is a diagram of a light sensor structure;
FIG. 3 is a view of the transmission structure;
FIG. 4 is a schematic diagram of an optical path;
FIG. 5 is a diagram of a fiber coupler structure;
FIG. 6 is a schematic diagram of a circuit for an Led compensated light source;
FIG. 7 is a schematic diagram of a boost constant-current led driving support control PWM control circuit;
fig. 8 is a flow chart of the optical compensation design.
Detailed Description
The present invention will be described in detail with reference to specific examples.
The first embodiment is as follows:
as shown in fig. 1, the invention provides an intelligent optical compensation solar optical fiber lighting system, which specifically comprises:
an intelligent optical compensation solar optical fiber lighting system comprises a hexagonal turntable 1, an optical sensor 2, a Fresnel lens 3, an optical fiber coupler 4, a U-shaped support 5, a support 6, a charging integrated lithium battery pack 7, a solar power generation panel 8, a dimming knob 9, a visual screen 10, a compensation LED lamp bank 11, an indoor environment simulation black box 12, an Arduino controller, a digital light intensity sensor, an optical fiber 13 and a transmission mechanism 14;
the optical sensor 2 is arranged at the circle center of the hexagonal turntable 1, the optical sensor 2 comprises a cross-shaped support 101 and four photosensitive resistors 102, the four photosensitive resistors 102 are respectively arranged in four quadrants divided by the cross-shaped support 101 and are tightly attached to the cross-shaped support for placement, the four photosensitive resistors are respectively connected with a constant value resistor with the same resistance in parallel and are connected with an Arduino controller, and the Arduino controller is connected with a control transmission mechanism 14; the transmission mechanism 14 comprises a motor, a speed reducer, a transmission shaft and a coupler, the Arduino controller controls the motor to rotate to drive the speed reducer, the transmission shaft and the coupler to rotate, the transmission mechanism 14 is fixed on the U-shaped support 5, the U-shaped support 5 is fixedly arranged on the support 6, and the transmission mechanism 14 drives the U-shaped support 5 and the hexagonal turntable 1;
the solar energy light source comprises a hexagonal rotary table 1, wherein 4 Fresnel lenses 3 are arranged in the hexagonal rotary table 1, the 4 Fresnel lenses correspond to 4 optical fiber couplers 4, when sunlight is parallelly injected, parallel light is changed into large light spots through the Fresnel lenses, then the large light spots pass through the optical fiber couplers, the optical fiber couplers 4 are installed on a U-shaped support 5 and comprise threaded sleeves, aspheric convex lenses, threaded glands, filter plates and optical fiber sleeves, the aspheric convex lenses are clamped and fixed through the threaded glands and the threaded sleeves, the filter plates are placed at the focuses of the aspheric convex lenses, and the optical fibers and the optical fiber sleeves are fixed through reserved threaded holes in the sleeves by jackscrews;
the optical fiber connection compensation LED lamp bank, the Arduino controller connection control compensation LED lamp bank, the visual screen observation indoor environment simulation black box illumination value, the illumination change through the light adjusting knob, the solar power generation panel collection solar power generation output to the charging integration lithium battery pack, the charging integration lithium battery pack supplies power for the compensation LED lamp bank and the transmission mechanism;
digital light intensity sensor sets up the offside of going into the light mouth at indoor environment simulation black box, digital light intensity sensor connects Arduino controller and visual screen respectively, gathers illumination intensity through digital light intensity sensor.
As shown in fig. 6, the compensation LED lamp set is formed by connecting 6 LED lamps in series and 3 series branches in parallel. As shown in fig. 7, the boost constant current led driving supports the control circuit schematic diagram of the PWM technology.
The power generation power of the solar power generation panel is 40W, and the power is input to the lithium battery pack through the UPS direct current module. Considering that the energy of the battery pack is 216W · h, in order to ensure full charge in the effective sunshine time (about 6 hours), but it is difficult for the solar panel to continuously operate for six hours at the maximum power, it is necessary to select a solar panel having a power of at least 36W.
The solar charging module comprises a solar power generation panel 8 and a charging integrated lithium battery pack 7, when sunlight is sufficient, the power generation power of the solar power generation panel 8 is 40w, the UPS direct current module inputs the power to the lithium battery pack, meanwhile, the lithium battery pack discharges, and the power is output to the transmission mechanism 14 and the compensation LED lamp pack 11 through the charging integrated module. The lithium battery pack comprises a battery pack consisting of 4 batteries connected in series and 3 batteries connected in parallel, wherein the batteries are all 12 batteries.
The power consumption of the indoor light compensation system is about 12w, the total power of all motors of the sun tracking system is about 33w when the whole machine rotates, and is about 19.2w when the whole machine is in standby. In order to satisfy the requirement that the indoor light compensation system can continuously work for 16 hours under the outdoor dark and daylighting condition, a battery pack with the weight of at least 192 w.h needs to be prepared. Considering the advantages of high energy density, environmental friendliness, long service life, low self-discharge rate and the like of the lithium battery, a 21700 lithium battery is selected to prepare a battery pack, the single voltage of the 21700 lithium battery is between 2.6w and 4.2w, and the energy is about 18 w.h. The voltage of the battery pack is calculated to be 10.4 w-16.8 w, and the energy reaches 216 w.h.
When the illuminance transmitted by the optical fiber is lower than the preset threshold value in the module, the Arduino automatically controls the compensation LED lamp set 11 to light up and stabilize at the preset value, as shown in the light compensation design flow chart of fig. 8. The visualization screen 10 can observe the light intensity value in the indoor environment simulation black box 12 in real time. When the illuminance requirement changes, the preset threshold value can be changed by manually adjusting the dimming knob 9, so that the stable illuminance in the system is changed. Adjust luminance knob adopts one piece of 5K's potentiometre as adjust knob, and when the potentiometre knob rotated, the voltage change of middle pin, the change value of voltage was detected to the Arduino controller, adjusts indoor illuminance stable value.
As shown in fig. 4, when the sunlight is incident in parallel, the parallel light is first changed into a large light spot through the fresnel lens 3, then the large light spot is changed into a small light spot through the aspheric plano-convex lens in the optical fiber coupler 4, and then the ultraviolet ray and the infrared ray in the sunlight are filtered out through the filter in the optical fiber coupler 4, only the visible light is remained, and then the visible light is transmitted into the optical fiber 13.
As shown in fig. 5, the optical fiber coupler includes a threaded sleeve 202, an aspheric convex lens 205, a threaded gland 201, a filter 204, and an optical fiber sleeve 203. The aspheric convex lens 205 is clamped and fixed by the threaded gland 201 and the threaded sleeve 202, the filter 204 is placed at the focus of the aspheric convex lens 205 to ensure that a minimum light spot is formed, the converged light completely enters the optical fiber, and the optical fiber sleeve 203 are fixed by jackscrews through a threaded hole reserved on the sleeve.
The UPS direct current module adopts a UPS-1228-12 direct current UPS power module. The invention adopts two modes of parallel connection and series connection to form the battery pack, so a battery protection circuit must be arranged on each battery to realize that the power supply is cut off after the battery is fully charged and the load is cut off after the battery runs out of electric quantity. Meanwhile, the solar panel charges the battery all the time, the voltage fluctuation of the charging circuit can be caused when the sun tracking system works, and the solar panel can still charge the battery normally when the load works through the direct-current UPS power module.
As shown in fig. 2, the light sensor includes a cross-shaped support 101 and four photo-resistors 102, which are respectively installed in four quadrants divided by the cross-shaped support 101 and are disposed close to the support. The resistance value of the photoresistor is related to the illumination intensity, when sunlight vertically irradiates on the light sensor, the cross-shaped support 101 does not shield the sunlight to generate a shadow, the photosensitive areas of the photoresistors are the same, and the resistance values are the same. When the sunlight is not perpendicular to the optical sensor, the angle formed by the sunlight and the cross-shaped support 101 is deviated, and the support can block the sunlight to generate shadows on a plurality of photoresistors, so that the resistance value of the photoresistors is influenced. When the photoresistance value changes, the current value in the return circuit can change correspondingly, connect a definite value resistance that the resistance is the same with four photoresistances 102 in parallel respectively, convert the current signal into voltage signal, transmit the signal to Arduino again, can control drive mechanism 14, drive U type support 5, hexagon carousel 1, it is the theory of operation of light sensor.
As shown in fig. 3, the transmission mechanism includes a motor 303, a speed reducer 301, a transmission shaft 302, and a coupling 304, and after the Arduino receives a signal from the optical sensor, the motor 303 is controlled to rotate, so as to drive the speed reducer 301, the transmission shaft 302, and the coupling 304 to rotate, further drive the transmission mechanism, and realize alignment to the sun. When the four photoresistors have the same resistance value, namely the resistance value is opposite to the sun. Because outdoor light rays cannot change instantly, in order to prevent the situation that objects are shielded to cause misjudgment of the sun direction, collected voltage information is processed by adopting a low-pass filtering algorithm, and interference of external factors is reduced. After the processed data is obtained, in order to obtain the approximate direction of the sun, the photoresistor with the maximum light intensity, namely the highest voltage signal, needs to be found firstly, so that the data is sorted by adopting a bubbling algorithm, the maximum voltage signal is obtained, then the data is compared with the minimum voltage signal, if the difference value is small, the position of the sun is locked, otherwise, the sun is not aligned, and the approximate direction of the sun can be obtained according to the direction of the photoresistor generating the maximum voltage signal. After the approximate direction of the sun is obtained, the Arduino controls the tracking device to rotate towards the corresponding position by a preset angle, and the process is repeated after each rotation until the position of the sun is locked.
The filter plate selects the quartz lens with the light transmission wavelength of 400nm-760nm, can filter ultraviolet rays and infrared rays harmful to a human body in sunlight, reduces the temperature of light spots and prevents the optical fiber coupler from being melted.
Because Arduino's AD analog-to-digital converter is 10 bit accuracies namely 0 ~ 1023 scope, and digital light intensity sensor can reach 16 bit accuracies namely 0 ~ 65525 scope, digital light intensity sensor adopts GY-30 digital light intensity sensor based on BH1750FVI chip.
Indoor test, data acquisition time: year 2020, 6 months. The total light collecting area is calculated to be 70650mm from the radius of the Fresnel lens2The theoretical light-gathering magnification of the device can reach more than 150 times. In order to simulate a real environment in a dark room, a box with the size of 1m multiplied by 1m is manufactured, and the illumination intensity in the box is 30-50 Lux when no light is input. In the state of untracked sunlight and tracked sunlight, one optical fiber is used for sunlight conduction, and the illumination intensity in the box body in the two cases is respectively recorded, as shown in table 1. It can be obviously seen that the transmission effect of the optical fiber is better when the optical fiber tracks the sun, and is about 5.5 times of that of the optical fiber under the state of not tracking the sun.
TABLE 1 light intensity in the case without and with tracking sun using one fiber optic transmission
Figure BDA0002689195780000061
The device designs 4 optical fibers in total, the average illumination intensity in the box body is about 920Lux, and if the device is applied to 10m2The indoor illumination intensity is about 92 Lux. The building illumination design standard GB 50034-2013 specifies the standard values of general illumination of residential, public and industrial buildings newly built, reconstructed and expanded, the illuminance under different national standards, the illuminance generated by the light transmitted by the optical fiber in a 10-square-meter room and the illumination effect enhanced by the optical compensation system in a 10-square-meter room as shown in table 2.
TABLE 2 standard values of illuminance for general environment and four optical fibers at 10m2Intensity of ambient light
Figure BDA0002689195780000071
The invention reasonably combines light collection optical fiber illumination, solar power generation and optical fiber compensation based on the PWM dimming technology, fully utilizes the respective advantages, does not consume a conventional power supply, can achieve higher sunlight utilization rate, and has ideal effect after practical verification
The above description is only a preferred embodiment of the intelligent light compensation solar optical fiber lighting system, and the protection range of the intelligent light compensation solar optical fiber lighting system is not limited to the above embodiments, and all technical solutions belonging to the idea belong to the protection range of the present invention. It should be noted that modifications and variations which do not depart from the gist of the invention will be those skilled in the art to which the invention pertains and which are intended to be within the scope of the invention.

Claims (10)

1. The utility model provides an intelligence light compensation's solar optical fiber lighting system which characterized by: the system comprises a hexagonal turntable, a light sensor, a Fresnel lens, an optical fiber coupler, a U-shaped support, a charging integrated lithium battery pack, a solar power generation panel, a dimming knob, a visual screen, a compensation LED lamp set, an indoor environment simulation black box, an Arduino controller, a digital light intensity sensor, an optical fiber and a transmission mechanism;
the light sensor is arranged at the circle center of the hexagonal turntable and comprises a cross-shaped support and four photosensitive resistors, the four photosensitive resistors are respectively arranged in four quadrants divided by the cross-shaped support and are placed by being tightly attached to the cross-shaped support, the four photosensitive resistors are respectively connected in parallel with a constant value resistor with the same resistance value and are connected with an Arduino controller, and the Arduino controller is connected with a control transmission mechanism; the transmission mechanism comprises a motor, a speed reducer, a transmission shaft and a coupler, the Arduino controller controls the motor to rotate to drive the speed reducer, the transmission shaft and the coupler to rotate, the transmission mechanism is fixed on a U-shaped support, the U-shaped support is fixedly installed on a support, and the transmission mechanism drives the U-shaped support and the hexagonal rotary table;
the solar energy light source comprises a hexagonal turntable, wherein 4 Fresnel lenses are arranged in the hexagonal turntable, the 4 Fresnel lenses correspond to 4 optical fiber couplers, when sunlight is parallelly injected, parallel light is firstly converted into large light spots through the Fresnel lenses, then the large light spots pass through the optical fiber couplers, the optical fiber couplers are installed on a U-shaped support, each optical fiber coupler comprises a threaded sleeve, an aspheric convex lens, a threaded gland, a filter plate and an optical fiber sleeve, the aspheric convex lens is clamped and fixed with the threaded sleeve through the threaded gland, the filter plate is placed at the focus of the aspheric convex lens, and the optical fiber sleeve are fixed through a top wire through a threaded hole reserved in the sleeve;
the optical fiber connection compensation LED lamp bank, the Arduino controller connection control compensation LED lamp bank, the visual screen observation indoor environment simulation black box illumination value, the illumination change through the light adjusting knob, the solar power generation panel collection solar power generation output to the charging integrated lithium battery pack, the charging integrated lithium battery pack supplies power for the compensation LED lamp bank and the transmission mechanism;
digital light intensity sensor sets up the offside of going into the light mouth at indoor environment simulation black box, digital light intensity sensor connects Arduino controller and visual screen respectively, gathers illumination intensity through digital light intensity sensor.
2. The intelligent light-compensated solar optical fiber lighting system according to claim 1, wherein: the compensation LED lamp group is formed by connecting 6 LED lamps in series and 3 series branches in parallel.
3. The intelligent light-compensated solar optical fiber lighting system according to claim 1, wherein: the power generation power of the solar power generation panel is 40W, and the power is input to the lithium battery pack through the UPS direct current module.
4. The intelligent light-compensated solar optical fiber lighting system according to claim 1, wherein: adjust luminance knob adopts one piece of 5K's potentiometre as adjust knob, and when the potentiometre knob rotated, the voltage change of middle pin, the change value of voltage was detected to the Arduino controller, adjusts indoor illuminance stable value.
5. The intelligent light-compensated solar optical fiber lighting system according to claim 1, wherein: the lithium battery pack comprises a battery pack consisting of 4 batteries connected in series and 3 batteries connected in parallel, wherein the batteries are all 12 batteries.
6. The intelligent light-compensated solar optical fiber lighting system according to claim 3, wherein: the UPS direct current module adopts a UPS-1228-12 direct current UPS power module.
7. The intelligent light-compensated solar optical fiber lighting system according to claim 1, wherein: when the four photoresistors have the same resistance value, namely the resistance value is opposite to the sun.
8. The intelligent light-compensated solar optical fiber lighting system according to claim 1 or 7, wherein: when four photo resistance's resistance value changes, the current value in the return circuit changes, and four photo resistance connect the same definite value resistance of resistance in parallel respectively, convert current signal into voltage signal, pass to the signal for the Arduino controller again, controller control drive mechanism rotates through control motor, drives reduction gear, transmission shaft and shaft coupling and rotates, drives actuating mechanism, realizes adjusting well to sun.
9. The intelligent light-compensated solar optical fiber lighting system according to claim 1, wherein: the filter plate selects a quartz lens with the light transmission wavelength of 400nm-760 nm.
10. The intelligent light-compensated solar optical fiber lighting system according to claim 1, wherein: the digital light intensity sensor adopts a GY-30 digital light intensity sensor based on a BH1750FVI chip.
CN202010985914.3A 2020-09-18 2020-09-18 Intelligent light compensation solar optical fiber lighting system Pending CN112097213A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116828675A (en) * 2023-06-01 2023-09-29 无锡照明股份有限公司 Unstructured multimode dynamic intelligent lighting control system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116828675A (en) * 2023-06-01 2023-09-29 无锡照明股份有限公司 Unstructured multimode dynamic intelligent lighting control system
CN116828675B (en) * 2023-06-01 2024-01-12 无锡照明股份有限公司 Unstructured multimode dynamic intelligent lighting control system

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