Solar panel on-load follow-up variable color temperature and brightness independent illumination system

Abstract

The utility model discloses a solar panel on-load following variable color temperature and brightness independent lighting system, which comprises a double-color-temperature LED module, a color temperature switching module, an LED constant-current driving module, a solar panel, a storage battery, a charging adaptation module, a PIR module, a battery detection module, a battery boosting module, an ambient light detection module and an output power control module, when the solar panel works under the illumination condition, the solar panel supplies energy to the storage battery through cooperation of the charging adaptation module and the battery detection module, and the double-color-temperature LED module achieves the illumination function of simulating changes along with the external brightness and color temperature. When the solar panel works under the condition of no illumination, the storage battery is boosted through the cooperation of the battery detection module and the battery boosting module, and the boosted storage battery is matched with the ambient light detection module, the LED constant-current driving module, the color temperature switching module and the output power control module, so that the double-color-temperature LED module realizes a low-brightness illumination function.

Description

Technical Field

[0001] This utility model relates to the technical field of LED lighting technology, and in particular to a solar panel-driven independent lighting system with variable color temperature and brightness. Background Technology

[0002] Traditional roof skylight structures typically guide sunlight into the room by placing a transparent glass panel on the roof and making openings, or by designing a skylight to bring sunlight into the room. However, sunlight is direct, and its intensity will quickly weaken after deviating from a certain angle, thus failing to provide a stable level of lighting to the room.

[0003] Therefore, based on the above-mentioned technical problems, this application proposes a solar panel-driven independent lighting system with stable and energy-saving illumination and variable color temperature and brightness. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a solar panel-driven independent lighting system with stable and energy-saving illumination and variable color temperature and brightness.

[0005] To achieve the above objectives, this utility model provides a solar panel-driven, variable color temperature and brightness independent lighting system, comprising a dual-color temperature LED module, a color temperature switching module, and an LED constant current drive module. The dual-color temperature LED module is connected to the output port of the LED constant current drive module. The system also includes a solar panel, a battery, a charging adapter module, a PIR module, a battery detection module, a battery boost module, an ambient light detection module, and an output power control module. The output terminal of the solar panel is connected to the input terminals of the charging adapter module and the ambient light detection module, respectively. The charging adapter module is connected to the battery detection module and then to the battery. The output terminal of the battery detection module is connected to the battery boost module. The input terminal of the PIR module is connected to the battery detection module, and the output terminal is connected to... The system is connected to a battery boost module. The output of the ambient light detection module is connected to the input of the LED constant current drive module. A color temperature switching module and an output power control module are connected in series between the output of the LED constant current drive module and the input of the dual-color temperature LED module. The output of the ambient light detection module is connected to the dual-color temperature LED module. The input of the output power control module is connected to the output of the LED constant current drive module. The charging adapter module is used to convert the electrical energy input from the solar panel and supply power to the battery. The PIR module is used to control the on / off state of the dual-color temperature LED module by sensing human movement signals. The battery detection module activates the PIR module when it detects low battery power. The ambient light detection module is used to detect the intensity of outdoor light and control the intensity of indoor light.

[0006] When the solar panel operates under sunlight, it supplies power to the battery through the cooperation of the charging adapter module and the battery detection module. It also works in conjunction with the ambient light detection module, the LED constant current drive module, the color temperature switching module, and the output power control module to enable the dual-color temperature LED module to simulate lighting changes that follow the ambient color temperature. When the solar panel operates without sunlight, the battery boosts its voltage through the cooperation of the battery detection module and the battery boost module. This boosted voltage then works in conjunction with the ambient light detection module, the LED constant current drive module, the color temperature switching module, and the output power control module to enable the dual-color temperature LED module to provide low-brightness lighting.

[0007] Furthermore, the circuit composed of the PIR module and the battery detection module includes: a battery, a PIR module, a PIR module interface J2, a PIR output signal processing transistor Q6, a battery mode conversion enable control transistor Q5, and a battery boost processor U6. The battery is connected to the PIR module interface for power supply and is also connected to the boost circuit. The PIR module signal port is connected to the signal processing transistor Q6, and then connected to the boost processor U6 through the enable control transistor Q5.

[0008] Furthermore, the circuit composed of the battery detection module and the battery boost module includes: a battery, resistors R28 and R29, transistor Q4, boost processor U6, inductor L3, diodes D6 and D7, and Zener diode ZD2. The two ends of resistors R28 and R29 are respectively connected to the solar panel and transistor Q4 through Zener diode ZD2, and the output control signal of transistor Q4 is connected to port 4 of boost processor U6. After boosting through port 1 of boost processor U6, the voltage is supplied to the subsequent dual-color temperature LED module through diodes D6 and D7.

[0009] Furthermore, the circuit of the charging adapter module and the battery detection module includes: a processor U5, a solar panel, a battery, a fuse resistor R44, a resistor R22, and an inductor L2. The solar panel is connected to port 4 of the processor U5 via diode D1, fuse resistor R44, and resistor R22; port 6 of the processor U5 is connected to the battery via inductor L2 and diode D5.

[0010] Furthermore, the circuit consisting of the ambient light detection and LED constant current driving module includes: processor U1, resistor R5, output current setting resistor R6, output current setting resistor R7, and MOSFET Q1. One end of the current detection signal is connected between ports 4 of processor U1. After port 6 of processor U1 drives MOSFET Q1 and output current setting resistors R6 and R7 through resistor R5, controlled variable constant current output is achieved.

[0011] Furthermore, the dual-color-temperature LED module circuit includes: an interface J1 and a plurality of high color-temperature LED units and low color-temperature LED units, wherein the plurality of high color-temperature LED units are connected in series with each other, and the plurality of low color-temperature LED units are connected in series with each other; the high color-temperature LED units are respectively connected to the C port and the LED port of the interface J1, and the low color-temperature LED units are respectively connected to the W port and the LED port of the interface J1.

[0012] Furthermore, it also includes a current detection module for detecting the magnitude of the output load current of the LED constant current drive module. The circuit composed of the LED constant current drive module and the current detection module includes: processor U4, current detection resistor R14, MOSFET Q2 and MOSFET Q3.

[0013] Furthermore, the color temperature switching module includes: processor U2, MOSFET Q2 and MOSFET Q3. After the 7 port of processor U2 is connected to MOSFET Q2, the 6 port of processor U2 is connected to MOSFET Q3. A circuit is formed with the LED constant current driving module through the current detection resistor R14. MOSFET Q2 is connected to the W port of the dual color temperature LED module, and MOSFET Q3 is connected to the C port of the dual color temperature LED module.

[0014] Furthermore, the current signal detected and processed by the current detection resistor R14 at port 5 of the processor U4 is then output as a color temperature control signal to port 3 of the processor U2 via port 7 of the processor U4.

[0015] The present invention adopts the above-described solution, and its beneficial effects are as follows:

[0016] By designing a solar panel-driven independent lighting system that tracks variable color temperature and brightness, the solar panel collects solar energy and converts it into electricity. Furthermore, the control circuit controls the dual-color temperature LED module to carry the lighting, thereby enabling the indoor light to adjust its output brightness in accordance with changes in outdoor light. In particular, by having the dual-color temperature LED module provide a gradual change from low to high color temperature to simulate changes in outdoor light, a more comfortable user experience is provided.

[0017] Secondly, the lighting fixtures using this system can determine their own installation locations without damaging the existing building structure, thus providing lighting for corridors, attics, bathrooms, and other locations, improving practicality.

[0018] In summary, the circuit structure of this utility model is simple, easy to implement, and has low operating costs, making it highly practical and user-friendly. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the composition of the solar panel-driven independent lighting system with variable color temperature and brightness in this embodiment.

[0020] Figure 2 This is a circuit diagram of the PIR module, battery detection module and battery boost module in this embodiment.

[0021] Figure 3 This is a circuit diagram of the charging adapter module and the battery detection module in this embodiment.

[0022] Figure 4 This is a circuit schematic diagram of the ambient light detection module and the LED constant current drive module in this embodiment.

[0023] Figure 5 This is a circuit diagram of the color temperature switching module and the dual-color temperature LED module in this embodiment.

[0024] Figure 6 This is a circuit diagram of the current detection module and the dual-color temperature LED module in this embodiment. Detailed Implementation

[0025] To facilitate understanding of this utility model, a more complete description of it is provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0026] See appendix Figure 1As shown, in this embodiment, a solar panel-driven, variable color temperature and brightness independent lighting system includes a dual-color temperature LED module, a color temperature switching module, and an LED constant current drive module. The dual-color temperature LED module is connected to the output port of the LED constant current drive module. The system also includes a solar panel, a battery, a charging adapter module, a PIR module, a battery detection module, a battery boost module, an ambient light detection module, and an output power control module. The output of the solar panel is connected to the inputs of the charging adapter module and the ambient light detection module. The charging adapter module is connected to the battery detection module and then to the battery. The output of the battery detection module is connected to the battery boost module. The input of the PIR module is connected to the battery detection module, and its output is connected to the battery boost module. The output of the ambient light detection module is connected to the input of the LED constant current drive module. A color temperature switching module and an output power control module are connected in series between the output of the LED constant current drive module and the input of the dual-color temperature LED module. The output of the ambient light detection module is connected to the dual-color temperature LED module, and the input of the output power control module is connected to the output of the LED constant current drive module. The charging adapter module converts the electrical energy input from the solar panel and supplies power to the battery. The PIR module controls the on / off state of the dual-color temperature LED module by sensing human movement signals. The battery detection module activates the PIR module when it detects low battery power (the mode can be switched according to the battery's usage status). The ambient light detection module detects the intensity of outdoor light and controls the intensity of indoor light.

[0027] It should be noted that by setting the PIR module to start when the battery is low, the PIR module can sense human movement signals and control the on / off state of the dual-color temperature LED module, thereby achieving a power-saving mode where the light turns on when someone is present and turns off after a delay when the person leaves. This reduces electricity costs without compromising the user experience.

[0028] See appendix Figure 2 As shown, in this embodiment, the components include a battery, a PIR module, a PIR module interface J2, a PIR output signal processing transistor Q6, a battery mode conversion enable control transistor Q5, and a battery boost processor U6. The battery is connected to the PIR module interface for power supply and to the boost circuit. The PIR module signal port is connected to the signal processing transistor Q6, and then connected to the boost processor U6 through the enable control transistor Q5.

[0029] See appendix Figure 2As shown, the circuit consisting of the battery detection module and the battery boost module further includes: a battery, resistors R28 and R29, transistor Q4, boost processor U6, inductor L3, diodes D6 and D7, and Zener diode ZD2. The two ends of resistors R28 and R29 are connected to the solar panel and transistor Q4 respectively through Zener diode ZD2, and the output control signal of transistor Q4 is connected to port 4 of boost processor U6. After boosting through port 1 of boost processor U6, the voltage is supplied to the subsequent dual-color temperature LED module through diodes D6 and D7.

[0030] See appendix Figure 3 As shown, in this embodiment, the circuit of the charging adapter module and the battery detection module includes: processor U5, solar panel, battery, fuse resistor R44, resistor R22 and inductor L2. The solar panel is connected to port 4 of processor U5 via diode D1, fuse resistor R44 and resistor R22. Port 6 of processor U5 is connected to the battery via inductor L2 and diode D5.

[0031] See appendix Figure 4 As shown, in this embodiment, the circuit consisting of ambient light detection and LED constant current driving module includes: processor U1, resistor R5, output current setting resistor R6, output current setting resistor R7, and MOSFET Q1. One end of the current detection signal is connected between ports 4 of processor U1. After port 6 of processor U1 drives MOSFET Q1 and output current setting resistors R6 and R7 through resistor R5, controlled variable constant current output is achieved.

[0032] See appendix Figure 5 As shown, in this embodiment, the dual-color temperature LED module includes an interface J1 and several high color temperature LED units and low color temperature LED units. The high color temperature LED units are connected in series, and the low color temperature LED units are connected in series. The high color temperature LED units are connected to the C port and the LED port of the interface J1, respectively, and the low color temperature LED units are connected to the W port and the LED port of the interface J1, respectively. The low color temperature covers the color temperature of morning sunlight, and the high color temperature covers the color temperature of midday sunlight. The color temperature range provided by the high color temperature LED units and the low color temperature LED units in the dual-color temperature LED module is preferably 1800K~6500K, which can cover the color temperature range of outdoor light and provide indoor lighting that matches the intensity of outdoor light. Furthermore, in conjunction with the color temperature switching module, the dual-color temperature LED module can achieve the effect of following changes in the external color temperature.

[0033] See appendix Figure 5 , 6As shown, in this embodiment, a current detection module for detecting the magnitude of the output load current of the LED constant current drive module is also included. The circuit composed of the LED constant current drive module and the current detection module includes: processor U4, current detection resistor R14, MOSFET Q2 and MOSFET Q3; Secondly, the color temperature switching module includes: processor U2, MOSFET Q2 and MOSFET Q3. After the 7 port of processor U2 is connected to MOSFET Q2, the 6 port of processor U2 is connected to MOSFET Q3, and a loop is formed with the LED constant current drive module through the current detection resistor R14. MOSFET Q2 is connected to the W port of the dual color temperature LED module, and MOSFET Q3 is connected to the C port of the dual color temperature LED module. The 5 port of processor U4 detects and processes the current signal through the current detection resistor R14, and then the 7 port of processor U4 outputs a color temperature control signal to the 3 port of processor U2.

[0034] Based on the circuit composition described above, a solar panel-driven independent lighting system with variable color temperature and brightness is formed. For ease of understanding, the working principle will be further explained below with reference to specific embodiments.

[0035] In this embodiment, when the solar panel is operating under sunlight, it supplies power to the battery through the cooperation of the charging adapter module and the battery detection module. This allows the battery to be powered by the remaining modules when there is no sunlight, reducing operating costs. Specifically, when the battery detection module detects that the battery is charging, it stops charging when the voltage reaches a preset upper limit value; when the battery detection module detects that the battery is discharging, it stops discharging when the voltage reaches a preset lower limit value, thereby protecting the normal operation of the battery and extending its service life.

[0036] Secondly, the solar panel works in conjunction with the ambient light detection module (which provides the dimming signal), the LED constant current drive module, the color temperature switching module, and the output power control module to enable the dual-color temperature LED module to achieve lighting functionality that follows changes in the ambient color temperature. Specifically, the ambient light detection module detects the load voltage input to the solar panel and converts it into the dimming signal required by the LED constant current drive module. This causes the LED constant current drive module to output a constant current to the downstream load that varies with the intensity of outdoor light, simulating the current changes in outdoor ambient light brightness. This allows the dual-color temperature LED module to provide indoor lighting that is proportional to the brightness of outdoor light. As the outdoor ambient light brightness changes, the current changes accordingly, and the color temperature switching module simultaneously adjusts the current ratio of the two LEDs. This ensures that the dual-color temperature LED module provides indoor lighting that is proportional to the brightness of outdoor light while also mimicking the changes in the outdoor ambient light color temperature.

[0037] When the solar panel is working in the absence of sunlight, the battery boosts the voltage through the cooperation of the battery detection module and the battery boost module. After boosting, it works with the ambient light detection module, the LED constant current drive module, the color temperature switching module, and the output power control module to enable the dual-color temperature LED module to achieve low-brightness lighting function. Specifically, the voltage output by the battery is converted and boosted by the battery boost module so that the voltage output by the battery can supply the operation of the subsequent load module, enabling the dual-color temperature LED module to provide a low-brightness state.

[0038] When the battery detection module detects that the battery power is below 40% (this value can be set according to actual needs), it first turns off the dual-color temperature LED module to stop lighting, and then turns on the PIR module; when the PIR module senses human movement, it starts the low-brightness lighting mode of the dual-color temperature LED module, and cuts off the power supply after a delay of 10 seconds, causing the dual-color temperature LED module to stop lighting.

[0039] Secondly, the current detection module detects and converts the current output by the LED constant current drive module into a voltage signal. This signal is then amplified by the color temperature switching module and converted into two sets of inverse PWM signals. This automatically activates one of the corresponding load groups in the two load paths, or activates both load paths simultaneously (two complementary pulse width modulation signals). This controls the dual-output power circuit to mix colors, thereby adjusting the color temperature of the dual-color temperature LED module to correspond to the color temperature changes of outdoor light for illumination.

[0040] In addition, the current detection module converts the current output by the LED constant current drive module into a voltage signal, which is then converted into two complementary pulse width modulation signals by the color temperature gradient switching circuit. These signals control the output power control module to mix the colors of the LED units, so that the color temperature of the dual-color temperature LED module can change with the light intensity.

[0041] Furthermore, the solar panel-driven, variable color temperature, and brightness independent lighting system of this embodiment has broad application prospects. For example, by converting solar energy into electricity and controlling the dual-color temperature LED module load lighting through various modules, the brightness can follow the changes in outdoor light output (the gradual change between low and high color temperatures simulates the changes in outdoor light). It can be applied in places where outdoor light is difficult to directly illuminate, such as corridors, attics, and bathrooms, meeting the lighting needs of users in different scenarios. The installation position of the lamps can be determined according to actual needs without damaging the existing building structure. In addition, by adding a battery, the normal operation of the lighting system can be ensured even in the absence of sunlight.

[0042] In summary, the solar panel-driven independent lighting system with variable color temperature and brightness in this embodiment realizes functions such as gradual color temperature switching and low-cost lighting, providing users with a more energy-efficient, convenient, and comfortable lighting experience.

[0043] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the utility model in any way. Any modifications or variations made by those skilled in the art to the technical solution of this utility model without departing from its scope are equivalent embodiments of this utility model. Therefore, all equivalent changes made based on the concept of this utility model without departing from its scope should be covered within the protection scope of this utility model.

Claims

1. A solar panel-driven, independently adjustable color temperature and brightness lighting system, comprising a dual-color temperature LED module, a color temperature switching module, and an LED constant current drive module, wherein the dual-color temperature LED module is connected to the output port of the LED constant current drive module, characterized in that: It also includes a solar panel, a battery, a charging adapter module, a PIR module, a battery detection module, a battery boost module, an ambient light detection module, and an output power control module. The output terminal of the solar panel is connected to the input terminals of the charging adapter module and the ambient light detection module, respectively. The charging adapter module is connected to the battery detection module and then to the battery. The output terminal of the battery detection module is connected to the battery boost module. The input terminal of the PIR module is connected to the battery detection module, and the output terminal is connected to the battery boost module. The output terminal of the ambient light detection module is connected to the input terminal of the LED constant current drive module. A color temperature switching module and an output power control module are connected in series between the output terminal of the dynamic module and the input terminal of the dual-color temperature LED module. The output terminal of the ambient light detection module is connected to the dual-color temperature LED module. The input terminal of the output power control module is connected to the output terminal of the LED constant current drive module. The charging adapter module is used to convert the electrical energy input from the solar panel and supply power to the battery. The PIR module is used to control the on / off state of the dual-color temperature LED module by sensing human movement signals. The battery detection module activates the PIR module when it detects low battery power. The ambient light detection module is used to detect the intensity of outdoor light and control the intensity of indoor light.

2. The solar panel-driven, load-following, variable color temperature and brightness independent lighting system according to claim 1, characterized in that: The circuit consisting of the PIR module and the battery detection module includes: a battery, a PIR module, a PIR module interface J2, a PIR output signal processing transistor Q6, a battery mode conversion enable control transistor Q5, and a battery boost processor U6. The battery is connected to the PIR module interface for power supply and is also connected to the boost circuit. The PIR module signal port is connected to the signal processing transistor Q6, and then connected to the boost processor U6 through the enable control transistor Q5.

3. A solar panel-driven, load-following, variable color temperature and brightness independent lighting system according to claim 1 or 2, characterized in that: The circuit consisting of the battery detection module and the battery boost module includes: a battery, resistors R28 and R29, transistor Q4, boost processor U6, inductor L3, diodes D6 and D7, and Zener diode ZD2. The two ends of resistors R28 and R29 are connected to the solar panel and transistor Q4 respectively through Zener diode ZD2, and the output control signal of transistor Q4 is connected to port 4 of boost processor U6. After boosting at port 1 of boost processor U6, the voltage is supplied to the subsequent dual-color temperature LED module through diodes D6 and D7.

4. A solar panel-driven, load-following, variable color temperature and brightness independent lighting system according to claim 1, characterized in that: The circuit of the charging adapter module and the battery detection module includes: processor U5, solar panel, battery, fuse resistor R44, resistor R22 and inductor L2. The solar panel is connected to port 4 of processor U5 via diode D1, fuse resistor R44 and resistor R22. Port 6 of processor U5 is connected to battery via inductor L2 and diode D5.

5. A solar panel-driven, load-following, variable color temperature and brightness independent lighting system according to claim 1, characterized in that: The circuit consisting of the ambient light detection and LED constant current driving module includes: processor U1, resistor R5, output current setting resistor R6, output current setting resistor R7, and MOSFET Q1. One end of the current detection signal is connected between ports 4 of processor U1. After port 6 of processor U1 drives MOSFET Q1 and output current setting resistors R6 and R7 through resistor R5, controlled variable constant current output is achieved.

6. A solar panel-driven, load-following, variable color temperature and brightness independent lighting system according to claim 1, characterized in that: The circuit of the dual color temperature LED module includes: an interface J1 and several high color temperature LED units and several low color temperature LED units, wherein the several high color temperature LED units are connected in series and the several low color temperature LED units are connected in series; the high color temperature LED units are respectively connected to the C port and the LED port of the interface J1, and the low color temperature LED units are respectively connected to the W port and the LED port of the interface J1.

7. A solar panel-driven, load-following, variable color temperature and brightness independent lighting system according to claim 1, characterized in that: It also includes a current detection module for detecting the magnitude of the output load current of the LED constant current drive module. The circuit composed of the LED constant current drive module and the current detection module includes: processor U4, current detection resistor R14, MOSFET Q2 and MOSFET Q3.

8. A solar panel-driven, load-following, variable color temperature and brightness independent lighting system according to claim 7, characterized in that: The color temperature switching module includes a processor U2, a MOSFET Q2, and a MOSFET Q3. After the 7th port of the processor U2 is connected to the MOSFET Q2, the 6th port of the processor U2 is connected to the MOSFET Q3. A circuit is formed with the LED constant current drive module through the current detection resistor R14. The MOSFET Q2 is connected to the W port of the dual color temperature LED module, and the MOSFET Q3 is connected to the C port of the dual color temperature LED module.

9. A solar panel-driven, load-following, variable color temperature and brightness independent lighting system according to claim 7 or 8, characterized in that: The processor U4's port 5 detects and processes the current signal through the current detection resistor R14, and then the color temperature control signal is output from the processor U4's port 7 to the processor U2's port 3.

Images