A solar fiber optic lighting system with intelligent light compensation

Abstract

The present invention is a solar fiber optic lighting system with intelligent light compensation. The present invention relates to the technical field of indoor fiber optic lighting systems, and the system includes a hexagonal turntable, a light sensor, a Fresnel lens, a fiber optic coupler, a U-shaped bracket, a bracket, a charging integrated module and a lithium battery pack, a solar power generation panel, a dimming knob, a visualization screen, a compensation LED light group, an indoor environment simulation black box, an Arduino controller, a digital light intensity sensor, an optical fiber and a transmission mechanism; the present invention keeps the indoor light intensity stable; after the optical fiber introduces sunlight, the indoor illumination is sensed by the light intensity sensor, and when the indoor illumination does not reach the required illumination, the electric light source is used to perform automatic light compensation in real time. No additional electric energy is required, and the solar panel, the charging integrated module and the battery are used for power supply; through the transmission mechanism, in conjunction with the light sensor, high-precision tracking of the sun is achieved to improve the light collection rate.

Description

Technical Field

[0001] The invention relates to the technical field of indoor optical fiber lighting systems, in particular to a solar optical fiber lighting system with intelligent light compensation. Background Art

[0002] With the energy crisis and ecological damage, people's awareness of environmental protection has gradually increased, and the use of solar energy has become the focus of scientific research. In 2010, my country became the world's largest energy consumer, accounting for 20.3% of the world's total energy consumption. In my country, solar power generation accounts for only 1% of the country's energy consumption. The main reason is that the solar energy conversion efficiency is low, only 15%-20%, and the cost of solar power generation equipment is expensive.

[0003] In large office buildings and other buildings, high-rise buildings block each other, resulting in insufficient daylighting indoors. Even during the day, workers need to use electric lighting systems for a long time, which consumes a lot of electricity. The solar fiber optic lighting system is a new technology that uses optical fibers to transmit outdoor light directly to indoor lighting, reducing the loss in energy conversion.

[0004] At present, there are many problems with domestic fiber optic lighting systems. For example, they are greatly affected by weather factors. Since the outdoor light intensity changes at any time with the weather, the indoor light intensity changes all the time. In addition, in cloudy days, rainy days, nights and other environments, the indoor light intensity is extremely low. Using it alone cannot meet the requirements of indoor lighting. It often needs to be used in conjunction with LED lights to provide additional power.

[0005] The accuracy of focusing sunlight is not high. Under normal conditions, the size of the focused sunlight spot is much larger than the size of the optical fiber. When the position of the sun changes, it is easy to cause the center of the sunlight spot to deviate from the center of the optical fiber, reducing the transmitted light flux and causing a sharp drop in indoor illumination.

[0006] The cost is high. According to investigations, some domestic companies producing fiber optic lighting products, such as Shenzhen Lanxu Technology Development Co., Ltd. and Nanjing Jet New Energy Co., Ltd., have products suitable for small-area indoor lighting that cost more than 20,000 yuan.

[0007] It is difficult to control the required light intensity. No matter whether it is Liu Yupeng et al.'s patent "A solar light hybrid lighting system for underground stations"; or Shen Xiaoming et al.'s patent "Intelligent solar fiber laser hybrid lighting device and control method thereof"; or Zhang Yaoming et al.'s patent "Solar cell and optical fiber lighting system for automatic tracking of the sun", there is currently no relevant patent that can observe in real time and manually adjust the required light intensity indoors. Summary of the invention

[0008] The present invention is to solve the lighting problem of a room with poor light. When the indoor illumination does not reach the required illumination, automatic illumination compensation is performed to ensure the stability of the indoor illumination. The present invention provides a solar fiber optic lighting system with intelligent light compensation. The present invention provides the following technical solutions:

[0009] A solar fiber optic lighting system with intelligent light compensation, the system comprising a hexagonal turntable, a light sensor, a Fresnel lens, a fiber coupler, a U-shaped bracket, a bracket, a charging integrated lithium battery pack, a solar power generation panel, a dimming knob, a visualization screen, a compensation LED light group, an indoor environment simulation black box, an Arduino controller, a digital light intensity sensor, an optical fiber and a transmission mechanism;

[0010] The light sensor is installed at the center of the hexagonal turntable. The light sensor includes a cross-shaped bracket and four photoresistors. The four photoresistors are respectively installed in the four quadrants divided by the cross-shaped bracket and placed close to the cross-shaped bracket. The four photoresistors are respectively connected in parallel with a fixed resistor with the same resistance value and connected to an Arduino controller. The Arduino controller is connected to control the transmission mechanism; the transmission mechanism includes a motor, a reducer, a transmission shaft and a coupling. The Arduino controller controls the motor to rotate, driving the reducer, the transmission shaft and the coupling to rotate. The transmission mechanism is fixed on the U-shaped bracket, and the U-shaped bracket is fixedly installed on the bracket. The transmission mechanism drives the U-shaped bracket and the hexagonal turntable;

[0011] Four Fresnel lenses are arranged in the hexagonal turntable, and the four Fresnel lenses correspond to four fiber couplers. When the sunlight is incident in parallel, it first passes through the Fresnel lens to convert the parallel light into a large light spot, and then passes through the fiber coupler. The fiber coupler is installed on a U-shaped bracket. The fiber coupler includes a threaded sleeve, an aspheric convex lens, a threaded gland, a filter and an optical fiber sleeve. The aspheric convex lens is clamped and fixed by the threaded gland and the threaded sleeve. The filter is placed at the focus of the aspheric convex lens. The optical fiber and the optical fiber sleeve are fixed by a screw through a threaded hole reserved on the sleeve.

[0012] The optical fiber is connected to the compensation LED light group, the Arduino controller is connected to control the compensation LED light group, the visual screen observes the indoor environment to simulate the illuminance value in the black box, the illuminance is changed by the dimming knob, the solar power generation panel collects solar power and outputs it to the charging integrated lithium battery pack, and the charging integrated lithium battery pack supplies power to the compensation LED light group and the transmission mechanism;

[0013] The digital light intensity sensor is arranged on the opposite side of the light inlet of the indoor environment simulation black box, and the digital light intensity sensor is respectively connected to the Arduino controller and the visualization screen, and the light intensity is collected through the digital light intensity sensor.

[0014] Preferably, the compensation LED lamp group is composed of 6 LED lamps connected in series and 3 series branches connected in parallel.

[0015] Preferably, the power generated by the solar panel is 40W, which is input to the lithium battery pack through a UPS DC module.

[0016] Preferably, the dimming knob uses a 5K potentiometer as an adjustment knob. When the potentiometer knob is turned, the voltage of the middle pin changes, and the Arduino controller detects the voltage change value to adjust the indoor light illumination stability value.

[0017] Preferably, the lithium battery pack includes a battery pack consisting of 12 batteries in total, 4 of which are connected in series and 3 of which are connected in parallel.

[0018] Preferably, the UPS direct current module adopts a UPS-1228-12 direct current UPS power supply module.

[0019] Preferably, when the resistance values ​​of the four photoresistors are the same, it is when facing the sun.

[0020] Preferably, when the resistance values ​​of the four photoresistors change, the current value in the loop changes, and the four photoresistors are respectively connected in parallel with a fixed resistor with the same resistance value to convert the current signal into a voltage signal, which is then transmitted to the Arduino controller. The controller controls the transmission mechanism, controls the rotation of the motor, drives the reducer, the transmission shaft and the coupling to rotate, and drives the actuator to achieve alignment with the sun.

[0021] Preferably, the filter is a quartz lens with a light transmission wavelength of 400nm-760nm.

[0022] Preferably, the digital light intensity sensor adopts a GY-30 digital light intensity sensor based on a BH1750FVI chip.

[0023] The present invention has the following beneficial effects:

[0024] The present invention keeps the indoor light intensity stable; after the optical fiber introduces sunlight, the indoor light intensity sensor senses the indoor light intensity, and when the indoor light intensity does not reach the required light intensity, the electric light source is used to instantly perform automatic light compensation. No additional electric energy is required, and the entire system is powered by solar panels, integrated charging modules and batteries; high-precision tracking of the sun is achieved through the transmission mechanism and the light sensor, thereby improving the light collection rate. The cost is low; the cost is only about 2,500 yuan. If the focusing area is to be increased, it is only necessary to increase the area of ​​the solar light receiving panel and the number of light paths, and the cost does not increase significantly, so it has very good economic efficiency. The present invention can observe and manually adjust the indoor light intensity in real time; through the PWM dimming knob, the indoor light intensity stability value can be adjusted under different environments to meet the needs under various conditions.

[0025] The present invention designs sunlight collection, optical fiber light guiding, optical compensation at the end of the optical fiber and solar charging. On sunny days, solar energy is used for charging, and the energy is stored in the battery and supplied to the whole system. The solar tracking system is used to improve the effect and accuracy of sunlight collection. After filtering out harmful light through the filter, the optical fiber transmits sunlight to the room to cooperate with the LED lamp for lighting, maintaining the stability of the optical fiber. According to the actual characteristics of the office space, the required illumination can be manually adjusted, and it is suitable for different environments. The device has low manufacturing cost, stable operation, strong applicability, and improves the utilization rate of solar energy, effectively saving energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The structure diagram of solar fiber optic lighting system for intelligent light compensation;

[0027] Figure 2 This is the structure diagram of the light sensor;

[0028] Figure 3 It is the structure diagram of the transmission mechanism;

[0029] Figure 4 This is the optical path schematic diagram;

[0030] Figure 5 is the structure diagram of the optical fiber coupler;

[0031] Figure 6 This is the schematic diagram of the LED compensation light source circuit;

[0032] Figure 7 To support the control of PWM control circuit schematic diagram for boost constant current LED drive;

[0033] Figure 8 Design a flow chart for light compensation. DETAILED DESCRIPTION

[0034] The present invention is described in detail below in conjunction with specific embodiments. Specific embodiment one:

[0036] according to Figure 1 As shown, the present invention provides a solar fiber optic lighting system with intelligent light compensation, specifically:

[0037] A solar fiber optic lighting system with intelligent light compensation, the system comprising a hexagonal turntable 1, a light sensor 2, a Fresnel lens 3, a fiber coupler 4, a U-shaped bracket 5, a bracket 6, a charging integrated lithium battery pack 7, a solar power generation panel 8, a dimming knob 9, a visualization screen 10, a compensation LED light group 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;

[0038] The light sensor 2 is installed at the center of the hexagonal turntable 1. The light sensor 2 includes a cross-shaped bracket 101 and four photoresistors 102. The four photoresistors 102 are respectively installed in the four quadrants divided by the cross-shaped bracket 101 and are placed close to the cross-shaped bracket. The four photoresistors are respectively connected in parallel with a fixed resistor with the same resistance value and connected to an Arduino controller. The Arduino controller is connected to control the transmission mechanism 14; the transmission mechanism 14 includes a motor, a reducer, a transmission shaft and a coupling. The Arduino controller controls the motor to rotate, driving the reducer, the transmission shaft and the coupling to rotate. The transmission mechanism 14 is fixed on the U-shaped bracket 5, and the U-shaped bracket 5 is fixedly installed on the bracket 6. The transmission mechanism 14 drives the U-shaped bracket 5 and the hexagonal turntable 1;

[0039] Four Fresnel lenses 3 are arranged in the hexagonal turntable 1. The four Fresnel lenses correspond to four fiber couplers 4. When the sunlight is incident in parallel, it first passes through the Fresnel lens to convert the parallel light into a large light spot, and then passes through the fiber coupler. The fiber coupler 4 is installed on a U-shaped bracket 5. The fiber coupler includes a threaded sleeve, an aspheric convex lens, a threaded gland, a filter and an optical fiber sleeve. The aspheric convex lens is clamped and fixed by the threaded gland and the threaded sleeve. The filter is placed at the focus of the aspheric convex lens. The optical fiber and the optical fiber sleeve are fixed by a screw through a threaded hole reserved on the sleeve.

[0040] The optical fiber is connected to the compensation LED light group, the Arduino controller is connected to control the compensation LED light group, the visual screen observes the indoor environment to simulate the illuminance value in the black box, the illuminance is changed by the dimming knob, the solar power generation panel collects solar power and outputs it to the charging integrated lithium battery pack, and the charging integrated lithium battery pack supplies power to the compensation LED light group and the transmission mechanism;

[0041] The digital light intensity sensor is arranged on the opposite side of the light inlet of the indoor environment simulation black box, and the digital light intensity sensor is respectively connected to the Arduino controller and the visualization screen, and the light intensity is collected through the digital light intensity sensor.

[0042] like Figure 6 As shown, the compensation LED lamp group is composed of 6 LED lamps connected in series and 3 series branches connected in parallel. Figure 7 As shown, the boost constant current LED driver supports the control PWM technology control circuit schematic.

[0043] The solar panel generates 40W of power, which is input into the lithium battery pack through the UPS DC module. Considering that the energy of the battery pack is 216W·h, in order to ensure that it is fully charged within the effective sunshine time (about 6 hours), it is difficult for the solar panel to work continuously at maximum power for six hours, so a solar panel with a power of at least 36W is required.

[0044] The solar charging module includes a solar panel 8 and a charging integrated lithium battery pack 7. When there is sufficient sunlight, the solar panel 8 generates 40W of power, which is input to the lithium battery pack by the UPS DC module. At the same time, the lithium battery pack discharges and is output to the transmission mechanism 14 and the compensation LED lamp group 11 through the charging integrated module. The lithium battery pack includes a battery pack consisting of 4 series and 3 parallel batteries, totaling 12 batteries.

[0045] The power consumption of the indoor light compensation system is about 12w, and the total power of all motors of the solar tracking system is about 33w when the whole machine is rotating, and about 19.2w when in standby. In order to meet the requirement that the indoor light compensation system can continue to work for 16 hours when it is dark and there is no light outdoors, a battery pack of at least 192w·h is needed. Considering the advantages of lithium batteries such as high energy density, environmental friendliness, long life, and low self-discharge rate, a 21700 lithium battery is selected to make the battery pack. The single cell voltage of the 21700 lithium battery is between 2.6w and 4.2w, and the energy is about 18w·h. The calculated voltage of the battery pack is 10.4w~16.8w, and the energy reaches 216w·h.

[0046] When the light intensity transmitted by the optical fiber is lower than the preset threshold value in the module, the Arduino automatically controls the compensation LED light group 11 to light up and stabilize at the preset value, such as Figure 8As shown in the light compensation design flow chart. The visualization screen 10 can observe the light intensity value in the indoor environment simulation black box 12 in real time. When the light intensity demand changes, the preset threshold can be changed by manually adjusting the dimming knob 9, thereby changing the stable light intensity in the system. The dimming knob uses a 5K potentiometer as the adjustment knob. When the potentiometer knob is turned, the voltage of the middle pin changes. The Arduino controller detects the voltage change value and adjusts the indoor light intensity stability value.

[0047] like Figure 4 As shown, when the sunlight is incident in parallel, it first passes through the Fresnel lens 3 to convert the parallel light into a large spot, then passes through the aspheric plano-convex lens in the fiber coupler 4 to convert the large spot into a small spot, and then passes through the filter in the fiber coupler 4 to filter out the ultraviolet and infrared rays in the sunlight, leaving only visible light, which is then transmitted to the optical fiber 13.

[0048] like Figure 5 As shown, the fiber coupler comprises a threaded sleeve 202, an aspheric convex lens 205, a threaded gland 201, a filter 204 and a fiber sleeve 203. The aspheric convex lens 205 is clamped and fixed by the threaded gland 201 and the threaded sleeve 202, and the filter 204 is placed at the focus of the aspheric convex lens 205 to ensure the formation of the smallest light spot, and the converged light all enters the optical fiber, and the optical fiber and the fiber sleeve 203 are fixed by a screw through the threaded hole reserved on the sleeve.

[0049] The UPS DC module adopts UPS-1228-12 DC UPS power module. The present invention adopts two ways of parallel connection and series connection to form a battery pack, so each battery must be equipped with a battery protection circuit to cut off the power supply after the battery is fully charged and cut off the load after the battery is exhausted. At the same time, the solar power generation panel is always charging the battery, and the sun tracking system will cause voltage fluctuations in the charging circuit when it is working. The DC UPS power module ensures that the solar power generation panel can still charge the battery normally when the load is working.

[0050] like Figure 2As shown, the light sensor includes a cross-shaped bracket 101 and four photoresistors 102. The four photoresistors are respectively installed in the four quadrants divided by the cross-shaped bracket 101 and placed close to the bracket. The resistance value of the photoresistor is related to the light intensity. When the sunlight is vertically irradiated on the light sensor, the cross-shaped bracket 101 does not block the sunlight to produce a shadow. The photosensitive area of ​​the photoresistor is the same and the resistance value is the same. When the sunlight is not vertical to the light sensor, the angle formed by the sunlight and the cross-shaped bracket 101 will deviate, and the bracket will block the sunlight to produce shadows on several of the photoresistors, thereby affecting the resistance value of the photoresistor. When the photoresistor value changes, the current value in the loop will change accordingly. The four photoresistors 102 are respectively connected in parallel with a fixed resistor with the same resistance value, and the current signal is converted into a voltage signal. Then the signal is transmitted to Arduino, and the transmission mechanism 14 can be controlled to drive the U-shaped bracket 5 and the hexagonal turntable 1. This is the working principle of the light sensor.

[0051] like Figure 3 As shown, the transmission mechanism includes a motor 303, a reducer 301, a transmission shaft 302, and a coupling 304. When Arduino receives a signal from a light sensor, it controls the motor 303 to rotate, thereby driving the reducer 301, the transmission shaft 302, and the coupling 304 to rotate, and further drives the transmission mechanism to achieve alignment with the sun. When the resistance values ​​of the four photoresistors are the same, it is when facing the sun. Since outdoor light will not change instantly, in order to prevent objects from blocking and causing erroneous judgment of the sun's position, a low-pass filtering algorithm is used to process the collected voltage information to reduce the interference of external factors. After obtaining the processed data, in order to obtain the approximate position of the sun, it is necessary to first find the photoresistor with the largest light intensity, that is, the highest voltage signal, so the bubbling algorithm is used to sort the data, thereby obtaining the maximum voltage signal, and then comparing it with the minimum voltage signal. If the difference is very small, it indicates that the sun's position has been locked, otherwise it is not aligned with the sun, and the approximate position of the sun can be obtained by the position of the photoresistor that generates the maximum voltage signal. After obtaining the approximate position of the sun, the Arduino controls the tracking device to rotate a preset angle toward the corresponding position. The above process is repeated after each rotation until the sun's position is locked.

[0052] The filter is a quartz lens with a light transmission wavelength of 400nm-760nm, which can filter out harmful ultraviolet and infrared rays in sunlight, reduce the light spot temperature, and prevent the optical fiber coupler from melting.

[0053] Since the AD analog-to-digital converter of Arduino has a 10-bit precision, that is, a range of 0 to 1023, and the digital light intensity sensor can reach a 16-bit precision, that is, a range of 0 to 65525, the digital light intensity sensor adopts the GY-30 digital light intensity sensor based on the BH1750FVI chip.

[0054] Indoor test, data collection time: June 2020. The total light collection area is calculated to be 70650mm based on the radius of the Fresnel lens. 2 , the theoretical concentration ratio of the device can reach more than 150 times. In order to simulate the real environment of a lightless room, we made a 1m×1m×1m box. The light intensity in the box was 30-50Lux when there was no light input. In the state of not tracking sunlight and tracking sunlight, an optical fiber was used to transmit sunlight, and the light intensity in the box was recorded in the two cases, as shown in Table 1. It can be clearly seen that the transmission effect of the optical fiber is better when tracking the sun, which is about 5.5 times that of not tracking the sun.

[0055] Table 1 The light intensity in the box when not tracking the sun and tracking the sun using an optical fiber

[0056]

[0057] The device is designed with 4 optical fibers, and the average light intensity in the box is about 920Lux. 2 The indoor light intensity is about 92Lux. The "Architectural Lighting Design Standard" GB 50034-2013 stipulates the general illumination standard values ​​for newly built, renovated and expanded residential, public and industrial buildings. The illumination under different national standards, the illumination generated by optical fiber transmission in a 10 square meter room, and the lighting effect improved by the light compensation system in a 10 square meter room are shown in Table 2.

[0058] Table 2 Illumination standard values ​​for general environments and four optical fibers at 10m 2 Light intensity in the environment

[0059]

[0060] The present invention rationally combines light collection fiber optic lighting, solar power generation, and fiber optic compensation based on PWM dimming technology, making full use of their respective advantages, without consuming conventional power supply, and can achieve a higher utilization rate of sunlight. After actual verification, the effect is ideal.

[0061] The above is only a preferred implementation of a solar fiber optic lighting system with intelligent light compensation. The protection scope of a solar fiber optic lighting system with intelligent light compensation is not limited to the above embodiments. All technical solutions under this idea belong to the protection scope of the present invention. It should be pointed out that for those skilled in the art, several improvements and changes without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A solar fiber optic lighting system with intelligent light compensation, characterized by: The system includes a hexagonal turntable, a light sensor, a Fresnel lens, a fiber coupler, a U-shaped bracket, a bracket, a rechargeable lithium battery pack, a solar panel, a dimming knob, a visualization screen, a compensation LED light group, 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 installed at the center of the hexagonal turntable. The light sensor includes a cross-shaped bracket and four photoresistors. The four photoresistors are respectively installed in the four quadrants divided by the cross-shaped bracket and placed close to the cross-shaped bracket. The four photoresistors are respectively connected in parallel with a fixed resistor with the same resistance value and connected to an Arduino controller. The Arduino controller is connected to control the transmission mechanism; the transmission mechanism includes a motor, a reducer, a transmission shaft and a coupling. The Arduino controller controls the motor to rotate, driving the reducer, the transmission shaft and the coupling to rotate. The transmission mechanism is fixed on the U-shaped bracket, and the U-shaped bracket is fixedly installed on the bracket. The transmission mechanism drives the U-shaped bracket and the hexagonal turntable; Four Fresnel lenses are arranged in the hexagonal turntable, and the four Fresnel lenses correspond to four fiber couplers. When the sunlight is incident in parallel, it first passes through the Fresnel lens to convert the parallel light into a large light spot, and then passes through the fiber coupler. The fiber coupler is installed on a U-shaped bracket. The fiber coupler includes a threaded sleeve, an aspheric convex lens, a threaded gland, a filter and an optical fiber sleeve. The aspheric convex lens is clamped and fixed by the threaded gland and the threaded sleeve. The filter is placed at the focus of the aspheric convex lens. The optical fiber and the optical fiber sleeve are fixed by a screw through a threaded hole reserved on the sleeve. The optical fiber is connected to the compensation LED light group, the Arduino controller is connected to control the compensation LED light group, the visual screen observes the indoor environment to simulate the light intensity value in the black box, the light intensity is changed by the dimming knob, the solar power generation panel collects solar power and outputs it to the rechargeable lithium battery pack, and the rechargeable lithium battery pack supplies power to the compensation LED light group and the transmission mechanism; The digital light intensity sensor is arranged on the opposite side of the light inlet of the indoor environment simulation black box, and the digital light intensity sensor is connected to the Arduino controller and the visualization screen respectively, and the light intensity is collected by the digital light intensity sensor; The dimming knob uses a 5K potentiometer as an adjustment knob. When the potentiometer knob is turned, the voltage of the middle pin changes. The Arduino controller detects the voltage change value and adjusts the indoor light intensity to a stable value.

2. The solar fiber optic lighting system with intelligent light compensation according to claim 1 is characterized in that: The compensation LED lamp group is composed of 6 LED lamps connected in series and 3 series branches connected in parallel.

3. The solar fiber optic lighting system with intelligent light compensation according to claim 1 is characterized in that: The solar panel generates 40W of power, which is input into the lithium battery pack through the UPS DC module.

4. The solar fiber optic lighting system with intelligent light compensation according to claim 1 is characterized in that: The lithium battery pack includes a battery pack consisting of 12 batteries in total, 4 of which are connected in series and 3 are connected in parallel.

5. The solar fiber optic lighting system with intelligent light compensation according to claim 3 is characterized by: The UPS direct current module adopts a UPS-1228-12 direct current UPS power supply module.

6. The solar fiber optic lighting system with intelligent light compensation according to claim 1 is characterized in that: When the resistance values ​​of the four photoresistors are the same, it is facing the sun.

7. A solar fiber optic lighting system with intelligent light compensation according to claim 1 or 6, characterized in that: When the resistance values ​​of the four photoresistors change, the current value in the loop changes. The four photoresistors are respectively connected in parallel with a fixed resistor with the same resistance value to convert the current signal into a voltage signal, and then transmit the signal to the Arduino controller. The controller controls the transmission mechanism to drive the reducer, transmission shaft and coupling to rotate by controlling the rotation of the motor, thereby driving the actuator to achieve alignment with the sun.

8. The solar fiber optic lighting system with intelligent light compensation according to claim 1 is characterized in that: The filter is a quartz lens with a light transmission wavelength of 400nm-760nm.

9. The solar fiber optic lighting system with intelligent light compensation according to claim 1 is characterized in that: The digital light intensity sensor adopts a GY-30 digital light intensity sensor based on a BH1750FVI chip.

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