Light transmittance adjustable lighting system based on illumination intensity detection

Abstract

The invention discloses a lighting system capable of adjusting light transmittance based on illumination intensity detection, and relates to the technical field of optical assemblys.The lighting system comprises a glass assembly and a control system, the glass assembly is of a composite structure, and the control system is connected with a lighting assembly; the control system comprises a control processing module, a light sensing module, an infrared sensing module, an ultraviolet detection module, a direct current voltage regulation module, a direct current inversion module and a display screen. Through the composite design of the electrochromic glass, the suspended particle film and the photovoltaic film, the light transmittance is automatically and accurately adjusted in combination with light, infrared and ultraviolet detection, and the requirements for energy conservation, comfort and attractiveness are met at the same time under the condition that a sunshade device does not need to be additionally arranged; the system has the beneficial effects of reducing energy consumption, improving the indoor photo-thermal environment, prolonging the service life and reducing the maintenance cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical components, in particular to a daylighting system with adjustable light transmittance based on light intensity detection. BACKGROUND

[0002] At present, with the promotion of building energy saving and the "double carbon" target, and the increasing demand for intelligent buildings and healthy living environment, higher requirements are put forward for natural daylighting systems in terms of energy efficiency, comfort and intelligent control. As a key component for introducing natural light, the performance optimization of daylighting skylight is crucial. However, the traditional fixed light transmittance or manually adjusted daylighting skylight has significant limitations: in strong light conditions, it can easily cause indoor overheating and glare, increase air conditioning energy consumption and reduce comfort; in weak light environment, it is insufficient for daylighting and still needs to rely on artificial lighting; manual adjustment method is inefficient and response lag for large area or high skylight. Although the existing solutions such as electric louver, sunshade curtain and other intelligent shading systems can be partially improved, as additional shading devices, they generally have problems such as affecting the transparency and beauty of the building, complex structure, high maintenance cost, limited adjustment precision (difficult to achieve continuous and fine control of light transmittance), and inconvenience for cleaning, which cannot meet the comprehensive needs of building for integrated, intelligent and fine light environment management.

[0003] As can be seen, the above-mentioned intelligent shading scheme improves the light environment control ability by adding mechanical devices (such as louvers and curtains), but adding these additional devices conflicts with maintaining the transparency of the building, simplifying the structure and reducing the maintenance cost. Therefore, how to realize continuous, automatic and accurate adjustment of transmittance without additional shading devices (simplified structure), and at the same time optimize the light and heat environment, reduce energy consumption, improve comfort and aesthetics is a problem that needs to be solved, and for this purpose, we propose a daylighting system with adjustable light transmittance based on light intensity detection. SUMMARY

[0004] The purpose of the present application is to provide a daylighting system with adjustable light transmittance based on light intensity detection to solve the problems raised in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a daylighting system with adjustable light transmittance based on light intensity detection, comprising: A glass assembly, the glass assembly is provided with a composite structure; A control system connected with the daylighting assembly, the control system comprising a control processing module, a light sensor module, an infrared sensor module, an ultraviolet detection module, a direct current voltage regulation module, a direct current inverter module and a display screen.

[0006] Preferably, the glass assembly comprises: A sealing frame; The first glass is disposed on the inner wall of the sealing frame, and is an electrochromic glass with a light transmittance of 80% when no electricity is applied thereto; The second glass is disposed on the inner wall of the sealing frame, and is a tempered glass; The vacuum cavity is disposed between the first glass and the second glass.

[0007] Preferably, the top end of the first glass is provided with an ultraviolet-proof coating, and the top end of the ultraviolet-proof coating is provided with a photovoltaic film for collecting solar energy and converting it into electric energy.

[0008] Preferably, the direct-current voltage regulating module is connected to the control processing module, and is used to convert electric current into direct current with a proper voltage. The direct-current inverter module is connected to the direct-current voltage regulating module, and is used to convert the direct current into alternating current to provide power for the first glass, so that the first glass changes the light transmittance under the action of alternating current with a certain voltage.

[0009] Preferably, the light sensor module is disposed outside the first glass, and is used to detect the intensity of external light and convert it into a light value to be transmitted to the control processing module. The control processing module is provided with a corresponding table of light value, light transmittance and voltage, and controls the direct-current voltage regulating module to change the output voltage according to the light value to adjust the light transmittance of the first glass.

[0010] Preferably, the infrared sensor module is disposed inside the second glass, and is used to detect the indoor condition and transmit an indoor infrared image to the control processing module. If the control processing module determines that there is a person activity in the room, the light transmittance of the first glass is adjusted according to the light value. If the control processing module determines that there is no one in the room, no adjustment is made.

[0011] Preferably, the ultraviolet detection module is connected to the control processing module, and is used to monitor the intensity of ultraviolet light and adjust the light transmittance of the glass layer in cooperation with the control processing module. The display screen can also be used to manually modify the light transmittance of the glass layer. A user can input a desired light transmittance value through the display screen, and the control processing module controls the direct-current inverter module to change the direct-current voltage according to the value.

[0012] Preferably, the infrared sensing module and the light sensing module detect the indoor personnel activity and the outdoor light value respectively, and transmit the results to the control processing module, the control processing module first judges whether there is personnel activity in the room, if no one, directly controls the direct current voltage regulation module to be powered off, if there is someone, obtains the current outdoor light value, and obtains the corresponding voltage according to the preset table, controls the direct current voltage regulation module to adjust the voltage, changes the light transmittance to the corresponding value in the table, when the light value is higher than 1600 lumens or lower than 100 lumens, it is judged that the outdoor light is too bright or too dark, the control processing module controls the direct current voltage regulation module to be powered off, so that the first glass becomes opaque state, so as to reduce the light intake or avoid the case that the indoor light is more sufficient than the outdoor light, which may see the indoor situation from the outdoor.

[0013] Preferably, the control processing module is provided with a first preset light value threshold and a second preset light value threshold, when the light value detected by the light sensing module is lower than the first preset light value threshold, that is, the outdoor light is too dark, the control processing module controls the direct current inverter module to be powered off, so that the first glass becomes opaque state, when the light value is higher than the second preset light value threshold, that is, the outdoor light is too bright, the direct current inverter module is also powered off, so that the first glass becomes opaque state.

[0014] Preferably, the control processing module is deployed in an edge computing terminal, and the intelligent logic executed by the control processing module is: when the sensing module detects that the light intensity exceeds 500lx and the temperature is higher than 28℃, the glass transmittance is automatically reduced to below 20%, and the air conditioner is started through the IoT interface at the same time, when the light intensity is lower than 200lx, the transmittance is increased to 70% and the auxiliary lighting system is turned off, in addition, the system also trains a light prediction model based on historical data, which can adjust the transmittance 15 minutes in advance, and the adjustment times in a single day are not more than 8 times.

[0015] Technical effects and advantages of the present application: The present application realizes automatic and accurate adjustment of light transmittance through the composite design of electrochromic glass, suspended particle film and photovoltaic film, combined with light, infrared and ultraviolet detection, which can meet the energy saving, comfort and aesthetic requirements without additional sunshade device, and has the beneficial effects of reducing energy consumption, improving indoor light and heat environment, prolonging service life and reducing maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a front view structural schematic diagram of the glass assembly of the present application.

[0017] Fig. 2 It is a lighting system module schematic diagram of the present application.

[0018] In the figure: 102, first glass; 103, second glass; 104, sealing frame; 105, vacuum chamber; 106, anti-ultraviolet coating; 107, photovoltaic thin film. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] This invention provides, for example Figs. 1-2 The illustrated lighting system, based on light intensity detection and adjustable transmittance, includes a glass assembly and a control system. The glass assembly is a composite structure, and the control system is connected to the lighting assembly. The control system includes a control processing module, a light sensing module, an infrared sensing module, an ultraviolet detection module, a DC voltage regulation module, a DC inverter module, and a display screen. Through the close integration of the glass assembly and the control system, a complete closed-loop control architecture for light acquisition, processing, and execution is formed. This not only automatically adjusts the lighting but also avoids the lag inherent in traditional manual adjustments. Furthermore, the modular design enhances the system's scalability and stability, making it adaptable to various architectural applications.

[0021] The glass assembly includes a sealing frame 104, a first glass 102, a second glass 103, and a vacuum chamber 105. The first glass 102 is disposed on the inner wall of the sealing frame 104 and is electrochromic glass. When the power is off, the light transmittance of the first glass 102 is set to 80%. The second glass 103 is disposed on the inner wall of the sealing frame 104 and is tempered glass. The vacuum chamber 105 is disposed between the first glass 102 and the second glass 103. The electrochromic glass provides the ability to automatically adjust the light transmittance with voltage changes, solving the problem that traditional glass cannot dynamically respond to external light. The combination of tempered glass and vacuum chamber 105 improves safety and thermal insulation performance, enabling the system to achieve multiple functions in energy saving, heat insulation, and protection, and ensuring the stability of long-term operation.

[0022] The top end of the first glass 102 is provided with an anti-ultraviolet coating 106, and the top end of the anti-ultraviolet coating 106 is provided with a photovoltaic film 107 for collecting solar energy and converting it into electrical energy. The surface of the glass layer is provided with a composite nano coating, the cycle life is improved to 100,000 times, and the glass has a heat insulation function with a U value of not greater than 1.45 W / (m2·K). The composite design enables the glass to have a wide range of light transmittance, anti-ultraviolet, heat insulation and self-power functions, greatly improving the controllability of the light and heat environment. The introduction of the photovoltaic film 107 not only reduces the dependence on external power supply, but also improves the green energy-saving value of the system. The composite nano coating effectively prolongs the service life of the material and improves the weather resistance and use reliability.

[0023] The direct current voltage regulating module is connected with the control processing module, and is used for converting current into direct current with appropriate voltage. The direct current inverter module is connected with the direct current voltage regulating module, and is used for converting direct current into alternating current to provide power supply for the first glass 102, so that the first glass 102 changes the light transmittance under the action of alternating current with a certain voltage. Through the double conversion of direct current voltage regulation and inversion, the stability and flexibility of the power supply are ensured, so that the electrochromic glass can quickly and smoothly realize light transmittance adjustment. The power supply architecture takes into account energy saving and safety, avoids abnormal response of the glass caused by voltage fluctuation, and improves the overall reliability of the system.

[0024] The light sensing module is arranged outside the first glass 102, and is used for detecting external light intensity and converting the light intensity into a light value and transmitting the light value to the control processing module. The control processing module has a corresponding table of light value, light transmittance and voltage. The output voltage of the direct current voltage regulating module is changed according to the light value, and the light transmittance of the first glass 102 is adjusted. The introduction of the light sensing module realizes real-time sensing of the brightness of the external environment. Combined with the corresponding table in the control processing module, the light value and the light transmittance can be accurately corresponded, so that the instantaneous response to environmental changes can be realized, and the over-bright or over-dark situation in the room can be avoided, thereby improving the comfort and health of the living or office environment.

[0025] The infrared sensing module is arranged on the inner side of the second glass 103, and is used to detect the indoor situation and transmit the indoor infrared image to the control processing module. If the control processing module judges that there is personnel activity in the room, the light transmittance of the first glass 102 is adjusted according to the light value. If the control processing module judges that there is no one in the room, no adjustment is made. The strategy of “personnel adjustment and standby for no one” is realized by detecting the personnel activity in the room, which effectively reduces the energy consumption and prolongs the service life of the system. Through the detection of the personnel activity in the room, the intelligent man-machine interaction logic is realized, unnecessary energy consumption is avoided when there is no one, the system operation frequency is reduced, and the service life of the component is prolonged. The mechanism ensures that the light is always suitable when there is someone, and improves the humanization of the system.

[0026] The ultraviolet detection module is connected with the control processing module, and the ultraviolet detection module is used to monitor the intensity of ultraviolet rays and adjust the light transmittance of the glass layer in cooperation with the control processing module. The display screen can also be used to manually modify the light transmittance of the glass layer. The user can input the desired light transmittance value through the display screen, and the control processing module controls the direct current inversion module to change the direct current voltage according to the value. The ultraviolet detection module enhances the environmental adaptability of the system, and can effectively prevent the damage of excessive ultraviolet rays to the human body and indoor articles. At the same time, the display screen provides an entry for user active intervention, retaining a flexible manual adjustment means in addition to automatic adjustment, so that the system takes into account both intelligence and individualization.

[0027] The infrared sensing module and the light sensing module detect the personnel activity situation in the room and the outdoor light value respectively, and transmit the results to the control processing module. The control processing module first judges whether there is personnel activity in the room. If there is no one, the direct current voltage regulating module is directly controlled to be powered off. If there is someone, the current outdoor light value is obtained, and the corresponding voltage is obtained according to the preset table, the direct current voltage regulating module is controlled to adjust the voltage, and the light transmittance is changed to the corresponding value in the table. When the light value is higher than 1600 lumens or lower than 100 lumens, it is determined that the outdoor light is too bright or too dark, the control processing module controls the direct current voltage regulating module to be powered off, so that the first glass 102 becomes opaque, so as to reduce the light intake or avoid the situation that the indoor light is sufficient and the outdoor light can be seen. The logic not only realizes the accurate adaptation to the light intensity, but also takes into account the energy saving and privacy protection. When the light is extremely extreme, the glass is automatically powered off to be opaque, which not only reduces the air conditioner energy consumption, but also avoids the problem of indoor privacy exposure. Such compound judgment logic significantly improves the safety and practicality of the system.

[0028] The control processing module has a first preset light value threshold and a second preset light value threshold. When the light value detected by the light sensing module is lower than the first preset light value threshold (i.e., the outdoor light is too dim), the control processing module controls the DC inverter module to cut off power, making the first glass 102 opaque. When the light value is higher than the second preset light value threshold (which can be set to 550-1600 lumens, i.e., the outdoor light is too bright), the DC inverter module is also controlled to cut off power, making the first glass 102 opaque. This dual-threshold mechanism effectively solves the problem of light environment management under extreme light changes, ensuring that the indoor environment is always within a suitable light range. By automatically adjusting within the threshold and quickly protecting against exceeding the threshold, the system's robustness to complex climates and sunlight environments is enhanced.

[0029] The control and processing module is deployed on an edge computing terminal. The intelligent logic executed by this module is as follows: when the sensor module detects that the light intensity exceeds 500 lx and the temperature is above 28℃, it automatically reduces the glass transmittance to below 20% and simultaneously activates the air conditioning system via the IoT interface. When the light intensity is below 200 lx, the transmittance is increased to 70% and the auxiliary lighting system is turned off. Furthermore, the system trains a light prediction model based on historical data, enabling it to adjust the transmittance 15 minutes in advance, with a daily adjustment limit of no more than 8 times. The application of edge computing makes data processing more efficient, reduces latency, and allows for rapid response to environmental changes. The IoT linkage with air conditioning and lighting enables comprehensive intelligent management and control of the building environment. The light prediction model further enhances the system's foresight and proactivity, allowing for early adjustments to avoid discomfort caused by sudden changes in light intensity, while the daily adjustment limit ensures operational stability and equipment lifespan.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A light-collecting system with adjustable transmittance based on light intensity detection, characterized in that, include: Glass assembly, wherein the glass assembly is a composite structure; The control system is connected to the light-collecting component and includes a control processing module, a light sensing module, an infrared sensing module, an ultraviolet detection module, a DC voltage regulation module, a DC inverter module, and a display screen.

2. The adjustable transmittance lighting system based on light intensity detection according to claim 1, characterized in that, The glass assembly includes: Sealing frame (104); The first glass (102) is disposed on the inner wall of the sealing frame (104). The first glass (102) is electrochromic glass, and the light transmittance of the first glass (102) is set to 80% when the power is off. The second glass (103) is disposed on the inner wall of the sealing frame (104), and the second glass (103) is tempered glass; A vacuum chamber (105) is disposed between a first glass (102) and a second glass (103).

3. The adjustable transmittance lighting system based on light intensity detection according to claim 2, characterized in that, The top of the first glass (102) is provided with an anti-ultraviolet coating (106), and the top of the anti-ultraviolet coating (106) is provided with a photovoltaic film (107). The photovoltaic film (107) is used to collect solar energy and convert it into electrical energy.

4. The adjustable transmittance lighting system based on light intensity detection according to claim 3, characterized in that, The DC voltage regulating module is connected to the control processing module. The DC voltage regulating module is used to convert the current into DC power of a suitable voltage. The DC inverter module is connected to the DC voltage regulating module. The DC inverter module is used to convert DC power into AC power to provide power to the first glass (102) so that the first glass (102) changes its light transmittance under the action of AC power of a certain voltage.

5. The adjustable transmittance lighting system based on light intensity detection according to claim 4, characterized in that, The light sensing module is located on the outside of the first glass (102). The light sensing module is used to detect the intensity of external light and convert the light intensity into a light value, which is then transmitted to the control processing module. The control processing module has a built-in table of corresponding light values, transmittance, and voltage. Based on the light value, it controls the DC voltage regulation module to change the output voltage and adjust the transmittance of the first glass (102).

6. The adjustable transmittance lighting system based on light intensity detection according to claim 5, characterized in that, The infrared sensing module is located on the inside of the second glass (103). The infrared sensing module is used to detect the indoor situation and transmit the indoor infrared image to the control processing module. If the control processing module determines that there are people active in the room, it adjusts the light transmittance of the first glass (102) according to the light value. If the control processing module determines that there is no one in the room, it does not make any adjustment.

7. The adjustable transmittance lighting system based on light intensity detection according to claim 6, characterized in that, The ultraviolet detection module is connected to the control and processing module. The ultraviolet detection module is used to monitor the ultraviolet intensity and coordinate with the control and processing module to adjust the light transmittance of the glass layer. The display screen can also be used to manually modify the light transmittance of the glass layer. Users can input the desired light transmittance value through the display screen, and the control and processing module controls the DC inverter module to change the DC voltage according to the value.

8. The adjustable transmittance lighting system based on light intensity detection according to claim 7, characterized in that, The infrared sensing module and the light sensing module detect indoor human activity and outdoor light value respectively, and transmit the results to the control processing module. The control processing module first determines whether there is human activity indoors. If there is no human activity, it directly controls the DC voltage regulating module to cut off the power. If there is human activity, it obtains the current outdoor light value and obtains the corresponding voltage according to the preset table. It controls the DC voltage regulating module to adjust the voltage and change the light transmittance to the corresponding value in the table. When the light value is higher than 1600 lumens or lower than 100 lumens, it determines that the outdoor light is too bright or too dim. The control processing module controls the DC voltage regulating module to cut off the power, so that the first glass (102) becomes opaque, so as to reduce light intake or avoid the indoor light being more abundant than the outdoor light, which may cause the outdoor to see the indoor situation clearly.

9. A light-collecting system with adjustable transmittance based on light intensity detection according to claim 8, characterized in that, The control processing module has a first preset light value threshold and a second preset light value threshold. When the light value detected by the light sensing module is lower than the first preset light value threshold, that is, the outdoor light is too dim, the control processing module controls the DC inverter module to cut off the power, so that the first glass (102) becomes opaque. When the light value is higher than the second preset light value threshold, that is, the outdoor light is too bright, the DC inverter module is also controlled to cut off the power, so that the first glass (102) becomes opaque.

10. A light-collecting system with adjustable transmittance based on light intensity detection according to claim 9, characterized in that, The control processing module is deployed on the edge computing terminal. The intelligent logic executed by the control processing module is as follows: when the sensor module detects that the light intensity exceeds 500 lx and the temperature is higher than 28°C, it automatically reduces the glass transmittance to below 20% and simultaneously starts the air conditioning linkage through the IoT interface. When the light intensity is below 200 lx, the transmittance is increased to 70% and the auxiliary lighting system is turned off. In addition, the system also trains a light prediction model based on historical data, which can adjust the transmittance 15 minutes in advance and the number of adjustments per day does not exceed 8.

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