Driving power supply control circuit, control method and illumination application method

Abstract

The invention relates to the technical field of lighting, in particular to a driving power supply control circuit, a control method and a lighting application method. Comprising the steps that an acquisition module acquires spectral data and temperature data of a current environment; the receiving module receives the target color rendering index, the target color temperature and the target illumination; the control module is connected with the acquisition module and the receiving module, and is used for calculating a PWM duty ratio needing to be compensated according to the temperature data, obtaining a target PWM duty ratio based on the current color rendering index Ra, the current correlated color temperature CCT, the current illumination and the control parameters, and outputting a PWM signal based on the target PWM duty ratio and the PWM duty ratio needing to be compensated; and independent and stable constant-current signals are finally output by using the voltage balancing circuit and the driving module. The problems that an existing LED driving power source is single in function and lacks self-adaptive control capacity and monochromatic light trailing are solved. The LED powder-free lamp can continuously and stably operate, and meanwhile, high color rendering index and dynamic light color balance are achieved.

Description

Technical Field

[0001] The present invention relates to the field of lighting technology, and in particular to a driving power supply control circuit, a control method and a lighting application method. Background Art

[0002] With the rapid development of LED lighting technology, people's requirements for lighting quality are constantly increasing. Traditional LED lighting equipment usually uses blue LED chips to excite phosphors to achieve white light lighting, but this method is not tunable. In order to achieve high-quality lighting, multi-primary color powder-free LED technology came into being.

[0003] Currently, the driving power supplies of multi-primary color LED powder-free lighting systems generally have problems such as single function, lack of adaptive control ability, and single-color light tailing, which makes it difficult to meet the needs of high-quality lighting. Summary of the invention

[0004] The present invention aims to at least improve one of the technical problems existing in the prior art. To this end, the present invention proposes a driving power supply control circuit, a control method and a lighting application method.

[0005] A driving power supply control circuit, applied to a five-primary-color LED powder-free lamp, comprising: The acquisition module is used to collect the spectrum data and temperature data of the current environment; A receiving module, used to receive control parameters, wherein the control parameters include a target color rendering index, a target color temperature, and a target illumination; A control module connected to the acquisition module, used to calculate the current color rendering index Ra, the current correlated color temperature CCT and the current illuminance according to the spectral data, and calculate the PWM duty cycle to be compensated according to the temperature data; the control module is connected to the receiving module, and obtains a target PWM duty cycle based on the current color rendering index Ra, the current correlated color temperature CCT, the current illuminance and the control parameter, and outputs a PWM signal based on the target PWM duty cycle and the PWM duty cycle to be compensated; The driving module is connected to the control module and stably outputs an independent constant current signal based on the PWM signal.

[0006] In a possible technical solution, further, a voltage balancing circuit is included, which is electrically connected to the control module and the drive module respectively to maintain the multi-channel voltage constant and solve the problem of monochromatic light tailing of the powder-free lamp.

[0007] In a possible technical solution, further, it also includes a power management unit, which is respectively connected to the acquisition module and the control module, and is used to convert alternating current into direct current, wherein the power management unit adopts a single-ended flyback topology structure, including a filter circuit and a drain clamp protection circuit, wherein the input and output ends of the drain clamp protection circuit are respectively connected to the filter circuit, which is used to suppress electromagnetic interference and high-frequency oscillation and improve electromagnetic compatibility performance.

[0008] It should be noted that the filter circuit is an EMI filter circuit, which consists of two X capacitors, a common mode inductor and two Y capacitors; the drain clamp protection circuit consists of three resistors, a capacitor and a fast recovery diode. It can reduce ripple and circuit interference, and solve the problem that the PWM frequency of LED powder-free lamps is too high and easily interfered.

[0009] In a possible technical solution, further, the control module adjusts the LED driving current by calculating and adjusting the PWM duty cycle to be compensated to compensate for the light color shift caused by temperature changes. The adjustment range of the PWM duty cycle to be compensated is 0% to 100%, with a resolution of 0.1%, which can achieve fine current regulation.

[0010] In a possible technical solution, further, there are 10 spectral templates, each of which is suitable for a specific lighting demand scenario to ensure the best lighting effect in different application environments, including: natural light mode, work environment mode, reading mode, leisure mode, display mode, warm atmosphere mode, medical lighting mode, photography mode, outdoor night scene mode and custom mode.

[0011] In a possible technical solution, further, in the driving power control method of the present invention, the real-time collection and analysis of temperature data is a key factor in ensuring the stable light output of the LED lamp. By collecting the temperature data of the LED chip in real time through the temperature sensor, the system can dynamically adjust the driving current according to the temperature change of the LED to ensure that the light output and light color of the lamp remain stable. The control module will calculate the PWM duty cycle to be compensated according to the temperature change and refer to the pre-stored relationship curve between temperature and light output, and adjust the driving current of each LED lamp bead to compensate for the color deviation caused by temperature.

[0012] The driving power supply control system of the present invention has the functions of spectrum template selection, user preference customization and intelligent learning, and can automatically switch and adjust the spectrum template according to different user needs and ambient light conditions to ensure the best lighting effect.

[0013] The driving power supply control circuit provided by the present invention can, on the one hand, provide a stable and efficient driving power supply for the five-primary-color LED powder-free lamp, ensuring that the LED powder-free lamp can operate continuously and stably; on the other hand, it can detect the spectral distribution and temperature of the LED powder-free lamp in real time, and can adaptively adjust the output of each channel LED according to the detected parameters, so as to achieve a high color rendering index and dynamic light color balance. More importantly, the present invention also has the following advantages: High color rendering performance: The control strategy executed by the control module is used to calculate and design the five-primary color LED ratio to achieve high-quality light source output with a color rendering index Ra greater than 90 and a color tolerance SDCM less than 1.

[0014] Intelligent adaptive control: The stacked ensemble learning method is used in the execution of control strategies to achieve predictive parameter adjustment, dynamic temperature compensation and energy efficiency optimization, which can adapt to the needs of different lighting scenarios.

[0015] Remote monitoring and control: By integrating WiFi and Bluetooth wireless communication modules in the receiving module, it is possible to receive the working status data of LED lamps in real time, detect and handle faults in time, and has good scalability.

[0016] User-friendly: The present invention can also support multi-user configuration and circadian rhythm lighting functions, which can automatically optimize lighting parameters according to user preferences and natural light changes to provide a more comfortable lighting experience.

[0017] The driving power supply control circuit of the present invention effectively solves the monochromatic light tailing problem caused by different forward voltages of LEDs with different wavelengths in five-primary-color phosphor-free LED lamps, the mutual interference of different electronic devices, and the problem of no adaptive control of conventional powder-free power supplies.

[0018] A driving power supply control method, wherein the control circuit as described above is used to control a five-primary-color LED powder-free lamp, comprising the following steps: Step S101, the control module arbitrarily selects one of the spectrum templates, and provides different currents to different channels of the lamp based on the selected spectrum template to light up the lamp; Step S102, the collection module collects the spectrum data and temperature data of the lamp in real time; Step S103, calculating the current color rendering index Ra, the current correlated color temperature CCT and the current illuminance according to the spectral data; Step S104, the receiving module receives control parameters, wherein the control parameters include a target color rendering index, a target color temperature, and a target illumination; Step S105, the control module compares the calculated current color rendering index Ra, current correlated color temperature CCT and current illuminance with the control parameters, and selects a target PWM duty cycle that meets the control parameter requirements; Step S106, obtaining light output according to the temperature data, and calculating a PWM duty cycle to be compensated based on the light output; Step S107, outputting a PWM signal based on the target PWM duty cycle and the PWM duty cycle to be compensated; Step S108: the control module controls the driving module to stably output an independent constant current signal.

[0019] The driving power supply lighting application method provided by the present invention realizes high-quality lighting of five-primary-color LED powder-free lamps in terms of color rendering index, color temperature stability and intelligence through spectrum detection feedback, intelligent control and temperature compensation technology.

[0020] A driving power supply lighting application method, wherein, it includes using the control circuit as described above to control a five-primary color LED powder-free lamp, and the lighting application method is applied to rhythmic lighting, including the following contents: Spectral template setting: The user can preset 10 spectral templates through the control module. The spectral templates include the following application scenarios: natural light mode, working environment mode, reading mode, leisure mode, display mode, warm atmosphere mode, medical lighting mode, photography mode, outdoor night scene mode and custom mode. Each spectral template contains the parameters of target color rendering index Ra, correlated color temperature CCT and illumination. Ambient light adaptation adjustment: Based on the ambient light data collected in real time by the spectral sensor, the control module automatically adjusts the output spectrum distribution and brightness of the LED to adapt to changes in ambient light and ensure that the lighting effect matches the current ambient light conditions; Adjustment of time and geographic location information: The control module automatically adjusts the color temperature and illumination of the LED lamps based on the user's preset geographic location and time information, with an update frequency of every 2 minutes. The color temperature adjustment range is 2000K to 6500K, and the illumination adjustment range is 0 to 1000lux, to simulate the day and night changes of natural light and achieve the effect of rhythmic lighting; Intelligent coordinated control: The control module coordinates various functional modules by real-time monitoring of spectral data, temperature data and control parameters to achieve intelligent integrated control of spectral distribution control, ambient light adaptation and circadian rhythm lighting, ensuring that the system automatically adjusts light output according to the current environment to maintain stable and efficient lighting effects.

[0021] According to the driving power control method of the embodiment of the present invention, a variety of preset spectral templates are built in to support users to select and realize automatic calibration, and can sense the ambient light conditions, automatically adjust the spectral template parameters, realize ambient light adaptation, and realize intelligent dimming of the circadian rhythm based on the real-time clock and sunrise and sunset times, simulate the natural light environment, provide a more intelligent and comfortable lighting experience, and help maintain the user's physiological rhythm.

[0022] A driving power supply lighting application method, including using the above control circuit to control a five-primary color LED powder-free lamp, the lighting application method adopts an intelligent control algorithm based on machine learning, and the specific steps are as follows: Step S401: data collection and preprocessing, the control module continuously collects the following data: lighting parameters set by the user, ambient light data, LED temperature data, and user feedback data, wherein the lighting parameters include: color temperature, brightness and mode, the ambient light data includes spectrum and illumination, and the time information includes time, week and season; Step S402: the control module preprocesses the collected data, including normalization, missing value processing and outlier detection; Step S403: The control module uses three models, namely, a gradient boosting decision tree, a neural network and a stacking ensemble, for training. The gradient boosting decision tree model is used to predict the lighting parameters preferred by the user, the neural network model is used to predict the temperature change of the LED, and the stacking ensemble model integrates the outputs of the gradient boosting decision tree and the neural network to generate the final lighting parameter adjustment suggestion. Step S404: Based on the trained model, the control module predicts the lighting parameters that the user may prefer at a specific time and environment, and based on the prediction, the control module begins to gradually adjust the lighting parameters 15 minutes to 30 minutes in advance to achieve a smooth transition; Step S405: The control module predicts the temperature change trend of the LED using the neural network model. According to the predicted temperature change, the control module dynamically adjusts the temperature compensation coefficient to ensure the stability of the light color. Step S406: Under the premise of meeting the lighting needs of the user, the control module adjusts the driving current distribution of each LED to select the parameter combination with the lowest energy consumption while ensuring the spectrum quality; Step S407: The system supports multiple user profiles, records each user profile including an independent lighting model and historical data, and automatically switches to the corresponding profile according to the current user; Step S408: The control module monitors the temperature, current, and spectral parameters of the target LED in real time. When abnormal fluctuations are detected, the control module will immediately take measures to reduce the drive current of the target LED, adjust the output of LEDs other than the target LED to maintain normal lighting effects, and send a warning message to the user through the wireless communication module.

[0023] The system continuously learns user preferences and temperature patterns, and makes adjustments in advance to achieve a smooth transition and extend LED life. In addition, the system supports dynamic temperature compensation and energy efficiency optimization, automatically adjusting lighting according to user preferences and ensuring energy saving. The algorithm is evaluated and optimized every 7 days to ensure that the prediction accuracy exceeds 85%. The system also has anomaly detection capabilities to deal with temperature fluctuations and other emergencies to ensure stable system operation.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 is a system block diagram of a driving power supply control circuit according to an embodiment of the present invention; Figure 2 is a system block diagram of one implementation of a driving power supply control circuit according to an embodiment of the present invention; Figure 3 is a circuit schematic diagram of a power management unit according to an embodiment of the present invention; Figure 4 This is a circuit schematic diagram of a multi-channel light source driving module of the present invention; Figure 5 is a circuit schematic diagram of a voltage equalization circuit of the present invention; Figure 6 This is a flow chart of the driving power supply control method of the present invention; Figure 7 This is a color rendering index effect diagram of the five-primary-color powder-free LED lamp driven by the present invention; Figure 8 This is a diagram showing the color tolerance effect of the five-primary-color powder-free LED lamp driven by the present invention.

[0027] Reference numerals: Acquisition module 100, receiving module 200, control module 300, driving module 400; Power management unit 1, multi-channel light source driving module 2, spectrum sensor 3, temperature sensor 4, controller 5, voltage balancing circuit 6, wireless communication module 7, current sampling module 8. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0029] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0031] The terms "first", "second", "third", etc. in the specification and claims of the present application and the drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a series of steps or units are included, or optionally, steps or units not listed are included, or optionally, other steps or units inherent to these processes, methods, products or devices are included.

[0032] Only the part relevant to the present application is shown in the accompanying drawings, but not all of the content. Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processing or methods depicted as flow charts. Although the flow chart describes each operation (or step) as a sequential process, many of the operations therein can be implemented in parallel, concurrently or simultaneously. In addition, the order of each operation can be rearranged. When its operation is completed, the process can be terminated, but it can also have additional steps not included in the accompanying drawings. The process can correspond to a method, function, procedure, subroutine, subprogram, etc.

[0033] The terms "component", "module", "system", "unit", etc. used in this specification are used to represent computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a unit can be, but is not limited to, a process running on a processor, a processor, an object, an executable file, an execution thread, a program, and / or distributed between two or more computers. In addition, these units can be executed from various computer-readable media having various data structures stored thereon. Units can communicate through local and / or remote processes, for example, based on signals having one or more data packets (e.g., data from a second unit interacting with another unit in a local system, a distributed system, and / or a network. For example, the Internet interacts with other systems via signals).

[0034] With the rapid development of LED lighting technology, people's requirements for lighting quality are constantly increasing. Traditional LED lighting equipment usually uses blue LED chips to excite phosphors to achieve white light lighting, but this method has the problem that the spectrum of the lamp is not adjustable. In order to achieve high-quality lighting, multi-primary color LED powder-free technology came into being. However, the current multi-primary color LED powder-free lamps still have the following problems: 1. In the lighting application of multi-primary color LED powder-free lamps, monochromatic light tailing often occurs at the moment of turning on and off. This is because LEDs of different wavelengths have different forward voltages. When the power is turned on, the LED with low forward voltage will be turned on first, and when it is turned off, the LED with low forward voltage will be turned off, resulting in instantaneous monochromatic light output, affecting the visual effect of the lighting and reducing the overall lighting quality.

[0035] Second, the driving control of multi-primary color LED powder-free lamps usually adopts PWM dimming technology, but high-frequency PWM signals are susceptible to electromagnetic interference. Especially in complex electromagnetic environments, such as industrial sites or office environments with a large number of electronic devices, the integrity of PWM signals is easily affected, resulting in unstable LED output, flickering or brightness fluctuations. While affecting the lighting quality, it also causes visual fatigue to users.

[0036] 3. Most existing LED powder-free lighting systems use preset fixed lighting modes and lack the ability to adapt to environmental changes. For example, they cannot automatically adjust the output according to changes in ambient light. This may cause energy waste when there is sufficient natural light, and fail to provide sufficient lighting in time when there is insufficient light; they cannot automatically adjust the color temperature according to the user's physiological rhythm; maintaining a fixed color temperature throughout the day may affect the user's circadian rhythm, reduce work efficiency and sleep quality; and they lack real-time compensation for LED temperature changes.

[0037] The existing power supply-driven multi-primary color LED powder-free lamps generally have monochromatic light tailing, cross interference of electronic devices, and the control method of the driving power supply lacks adaptive control capabilities and single functions. The lighting application method is difficult to meet the diverse needs and other problems, making it difficult to meet the needs of high-quality lighting. Therefore, it is of great practical significance to develop a multi-primary color LED powder-free lamp driving power supply without monochromatic light tailing, multi-channel independent and precise control, anti-electromagnetic interference and intelligent adaptive adjustment.

[0038] To achieve the above purpose, the present invention provides an intelligent driving power supply control circuit and control method for a five-primary color LED powder-free lamp, so as to solve the technical problems of the prior art such as single function, lack of adaptive control capability, cross interference of electronic equipment, monochromatic light tailing, etc. See the following embodiments for details.

[0039] Example 1 A driving power supply control circuit is applied to five-primary-color LED powder-free lamps, such as Figure 1 As shown, including: The acquisition module 100 is used to acquire spectrum data and temperature data of the current environment; The receiving module 200 is used to receive control parameters, wherein the control parameters include a target color rendering index, a target color temperature, and a target illumination; The control module 300 is connected to the acquisition module 100 and is used to calculate the current color rendering index Ra, the current correlated color temperature CCT and the current illuminance according to the spectral data. The control module 300 is connected to the receiving module 200 and is used to execute the control strategy according to the control parameters and temperature data; wherein the control strategy includes: Compare the calculated current color rendering index Ra, current correlated color temperature CCT and current illuminance with the control parameters to select a target PWM duty cycle that meets the control parameter requirements; Obtaining light output according to the temperature data, and calculating a PWM duty cycle to be compensated based on the light output; Outputting a PWM signal based on a target PWM duty cycle and a PWM duty cycle to be compensated; The driving module 400 is connected to the control module 300 and stably outputs an independent constant current signal based on the PWM signal.

[0040] In order to solve the problem of monochromatic light tailing of the powder-free lamp and maintain the multi-channel voltage constant, this embodiment is further improved and further includes a voltage balancing circuit 6, which is electrically connected to the control module 300 and the drive module 400 respectively.

[0041] It should be noted that the control module 300 has ten built-in spectrum templates, including the following application scenarios: natural light mode, work environment mode, reading mode, leisure mode, display mode, warm atmosphere mode, medical lighting mode, photography mode, outdoor night scene mode and custom mode. Each spectrum template includes the relative spectrum of the LED powder-free lamp, the target color rendering index Ra, the target correlated color temperature CCT and the target illumination. The system automatically adjusts the output of each LED lamp according to the spectrum template selected by the user to achieve a specific spectrum distribution.

[0042] It should be noted that in the control strategy, the light output is obtained according to the temperature data, and the PWM duty cycle to be compensated is calculated based on the light output, specifically: A relationship curve between LED light output and temperature change is pre-stored in the control module 300; Obtaining the LED light output according to the temperature data and referring to the relationship curve; Based on the LED light output, the control module 300 calculates the PWM duty cycle that needs to be compensated, and dynamically adjusts the PWM duty cycle of each LED to change the driving current to compensate for the light color shift caused by temperature change.

[0043] Users can switch templates through a remote control module (such as a wireless communication module) or a local control panel. The system automatically adjusts the LED drive current and PWM signal duty cycle based on the user's selection to ensure that the output spectrum matches the target template. Each spectrum template can also be automatically adjusted according to the current ambient light conditions to ensure the best lighting effect.

[0044] It should be noted that the driver module 400 is a multi-channel light source driver module, adopts a Buck circuit topology, has an input voltage of 28VDC to 65VDC, outputs 5 independently adjustable constant current signals, and sets the maximum output current range of each channel to 50mA to 400mA, respectively driving blue, cyan, green, yellow and red five primary color non-phosphor LEDs, and specifically includes the following components: a) An integrated LED drive control chip U1, with LFT, PWM, ZVS, CS, GND, DIM, VIN and DRAIN function pins. This chip is the core of the drive circuit and is used to control the drive current of the LED.

[0045] b) Input filter circuit: It is composed of resistor R1 and capacitor C2. R1 is used to limit the current, and C2 is used to filter out high-frequency noise to improve the stability of the circuit.

[0046] c) PWM control circuit: includes resistor R4 and TVS protection diode D2. R4 is used to limit the current of the PWM signal, and D2 is used to protect the chip from overvoltage damage.

[0047] d) Output Buck circuit: It includes inductor L1, Schottky diode D1, output resistor R2 and output filter capacitor C1. This is the core part of Buck conversion, which is used for voltage reduction and current stabilization.

[0048] e) Current detection circuit: It is composed of parallel precision resistors R7 and R8. The LED current is precisely controlled by detecting the voltage across the resistors.

[0049] f) Feedback regulation circuit: including resistors R5, R9 and R6, capacitors C3 and C5. It is used to adjust the feedback signal to ensure the stability of the output current.

[0050] g) Output filter circuit: It is composed of capacitor C1 and is used to filter out the ripple in the output and provide a stable DC current.

[0051] The module adopts common anode constant current PWM dimming mode, with PWM frequency of 20kHz and resolution of 12 bits. This design can achieve precise current control and smooth dimming effect, effectively reducing flicker phenomenon.

[0052] It should be noted that the acquisition module 100 includes a spectrum sensor and a temperature sensor, wherein the spectrum sensor is connected by wires and packaged inside the five-primary-color powder-free LED lamp, and is used to detect the spectrum distribution in real time, with a wavelength detection range of 380nm to 780nm, a resolution of 10nm, and an integration time of no more than 2s. The temperature sensor is connected by wires and packaged on the five-primary-color powder-free LED lamp bead bracket, and is used to detect the temperature of the LED chip, with a measurement range of -25°C to 150°C, an accuracy of ±0.5°C, and a sampling rate of 1Hz.

[0053] It should be noted that the receiving module includes but is not limited to a wireless communication module, which is connected to the control module through a circuit, wherein the wireless communication module supports WiFi802.11b / g / n and Bluetooth 5.0BLE protocols, and the communication distance is 30 meters.

[0054] In this embodiment, if Figures 2 to 5 As shown, the driving power control circuit includes: a power management unit 1, a multi-channel light source driving module 2, a spectrum sensor 3, a temperature sensor 4, a controller 5, a voltage balancing circuit 6, a wireless communication module 7 and a current sampling module 8.

[0055] The power management unit 1 adopts a single-ended flyback topology, such as Figure 3As shown. The AC input end is connected to the input end of the common-mode inductor LF1 through the fuse F1. The Y capacitors CY1 and CY2 are respectively connected to the two output ends of the common-mode inductor LF1, and the other end is directly grounded; the varistor MOV1 is connected in parallel between the two input ends of the common-mode inductor LF1. One of the output ends of the common-mode inductor LF1 is connected to an AC input end of the rectifier bridge, and the other output end is connected to the other AC input end of the rectifier bridge. Resistors R3 and R4 are connected in series and then connected in parallel to the output end of the common-mode inductor LF1, and the X capacitor CX1 is connected in parallel to the input end of the rectifier bridge. One end of the output of the rectifier bridge is connected to one end of the primary winding of the transformer T1 through the inductor L1, and the other end is grounded. The filter capacitor C1 is connected in parallel between the output ends of the rectifier bridge. One end of the filter capacitor C2 is connected to the node of the inductor L1 and the transformer T1, and the other end is grounded. Among them, resistors R13, R14 and capacitor C4 are connected in parallel and connected in series with resistor R29 and diode D2, and the whole is connected in parallel to the input ends of the primary winding of the transformer T1. One end of the input of the primary winding of transformer T1 is connected to the drain of the switch tube, and the source of the switch tube is grounded through parallel resistors R20, R21 and R22. The HV pin of the control chip U1 is connected to the DC output positive pole of the rectifier bridge through resistor R8, and the VDD pin is connected to the input end of the auxiliary winding of transformer T1 through resistor R12, Schottky diode D3 and resistor R6. The GATE pin and CS of the control chip U1 are connected together and connected to the gate of the switch tube through resistor R16. Resistor R17 and diode D4 are connected in series and connected in parallel at both ends of resistor R16. One end of resistor R1 is connected to the gate of the switch tube, and the other end is grounded through parallel resistors R20, R21 and R22. One end of resistor R9 is connected to the CS pin of the control chip, and the other end is grounded through parallel resistors R20, R21 and R22. After resistor R26 and capacitor C13 are connected in series, one end is connected in parallel to the drain of the switch tube, and the other end is grounded. One end of capacitor C8 and capacitor C5 are connected in parallel to the junction of resistor R12 and Schottky diode D3, and the other end is directly grounded. The output end of transformer T1 also includes a combination of resistors R23 and R24 connected in parallel, capacitor C9 connected in series, and resistors R25 and R18 connected in parallel. One end of the diode is connected to one end of the output winding of transformer T1, and the other end is grounded through capacitor C10. Resistors R19 and R28 are connected in parallel to the positive and negative ends of the output.

[0056] The multi-channel light source driver module 2 adopts a Buck circuit topology structure, such as Figure 4As shown. Taking the blue light channel as an example, the other cyan, green, yellow and red channels have the same structure. It includes an integrated circuit chip U1 (hereinafter referred to as the chip), which has LPF, PWM, ZVS, CS, GND, DIM, VIN and DRAIN pins. Among them, the GND and ZVS pins of chip U1 are directly grounded, the VIN pin is connected to the 12V power supply through resistor R1, and the capacitor C2 is connected in parallel between the VIN pin and the ground. The LPF pin is directly grounded through capacitor C4, the PWM signal output by the controller is input to the PWM pin through resistor R4, and the signal of the PWM pin outputs the SET signal to the controller through the TVS protection diode D2. The DIM pin is connected to the 3.3V power supply through resistor R3. Capacitor C3 and resistor R5 are connected in series and in parallel between the DRAIN pin and CS pin of chip U1. Capacitor C5 and resistors R6 and R9 are connected in series and in parallel between the DRAIN pin and ZVS pin of chip U1. The cathode of Schottky diode D1 is connected to the output of the power management unit, and its cathode is connected to the parallel capacitor C1 and resistor R2. One end of the inductor L1 is connected to the anode of D1, and the other end is connected to the other end of the capacitor C1 and the resistor R2. The circuit controls the working state of the chip U1 through the PWM signal and the SET signal to drive the light source. The resistors R7 and R8 form a voltage divider network to provide voltage sampling for the chip U1. The diode D1, the inductor L1, the capacitor C1 and the resistor R2 form a freewheeling output, which is used to stabilize and filter the output voltage.

[0057] The spectrum sensor 3 is connected by wires and packaged inside the powder-free LED lamp, detects the spectrum distribution in real time, and transmits it to the controller 5 through wires for analysis and processing.

[0058] The temperature sensor 4 is connected and packaged on the LED lamp bead bracket through a wire, and is used to detect the temperature of the LED chip. The temperature data of the LED chip is detected in real time and transmitted to the controller 5 through the wire for analysis and processing.

[0059] The controller 5 uses a 32-bit ARMCortex-M4 core microcontroller with a main frequency of 100MHz, integrated with a 12-bit ADC and hardware PWM module. According to the data of the spectrum sensor 3, the temperature sensor 4 and the remote control command, the output of the multi-channel light source driver module 2 is adjusted to achieve high color rendering index output of the powder-free LED lamp and maintain the dynamic balance of light color.

[0060] The output end of the voltage balancing circuit 6 is connected in parallel to the two ends of the Schottky diode in the multi-channel light source driving module 2, such as Figure 5As shown, it includes a 20μF / 65V energy storage capacitor C1, a 500KΩ discharge resistor R1, and a fast recovery diode D1 with a reverse breakdown voltage of 100V. Each driver module is configured with a set of the above components, the diode anode is connected to the input voltage, the positive pole of the energy storage capacitor is connected to the diode cathode, and the discharge resistor is connected in parallel across the capacitor. This design ensures that each LED obtains sufficient voltage when the lamp is started, maintains a stable voltage when working, and extinguishes synchronously when turned off, effectively solving the problem of monochromatic light tailing caused by different forward voltages of LEDs of different wavelengths. This circuit significantly improves the light color uniformity, dimming performance and reliability of the lamp, maintains good spectral consistency under 10% dimming conditions, extends the life of the lamp, and improves the working stability in the event of a fault.

[0061] The wireless communication module 7 is connected to the controller 5 through a circuit, supports WiFi802.11b / g / n and Bluetooth 5.0 BLE protocols, and the communication distance is greater than 30 meters.

[0062] The controller 5 integrates a high-precision PWM module, which can output a PWM signal with a frequency of 20kHz and a resolution of 12 bits. By adjusting the duty cycle of the PWM signal, the driving current of the LED can be accurately controlled. The duty cycle adjustment range is 0% to 100%, and the minimum adjustment step is 0.1%, which can achieve a minimum current adjustment accuracy of 0.4mA. The high-precision adjustment system provided can accurately compensate for the light color deviation caused by temperature changes, ensuring the light color stability of LED lamps under different ambient temperatures.

[0063] In this embodiment, the specific configuration of the driven five-primary-color phosphor-free LEDs is as follows: blue LED: main wavelength 460nm, quantity 144; cyan LED: main wavelength 480nm, quantity 144; green LED: main wavelength 525nm, quantity 144; yellow LED: main wavelength 560nm, quantity 144; red LED: main wavelength 620nm, quantity 144. This 1:1:1:1:1 ratio can achieve a high color rendering index Ra>90, while covering a wide color gamut, suitable for various high-quality lighting scenarios.

[0064] The power management unit in this embodiment further includes an EMI filter circuit and a drain clamp protection circuit.

[0065] The EMI filter circuit is mainly composed of common mode inductors, X capacitors and Y capacitors. Figure 3As shown, preferably, the common mode inductor LF1 connected in series between the power input terminal and the rectifier bridge has a rated current of 3A. The X capacitor CX1 connected in parallel between the input terminal and the output terminal of the common mode inductor LF1 has a rated voltage of 275VAC and a capacitance of 100nF. The Y capacitors CY1 and CY2 connected to the two output terminals of the common mode inductor LF1 have a rated voltage of 275VAC and a capacitance of 2.2nF. This configuration can effectively suppress differential mode interference and common mode interference.

[0066] In order to further improve the EMI filtering performance, the high-frequency filter capacitor C1 connected in parallel at the DC output end of the rectifier bridge has a rated voltage of 450VDC and a capacitance of 470nF. At the same time, the absorption capacitor C2 connected in parallel at both ends of the primary winding of the switching transformer has a rated voltage of 450VDC and a capacitance of 2.2nF, which is used to absorb the high-frequency oscillation generated during the switching process.

[0067] After testing, the EMI filter circuit has an attenuation of 40dB in the frequency range of 150kHz to 30MHz, which can effectively suppress electromagnetic interference and enable the equipment to pass the EMC test.

[0068] The drain clamp protection circuit is mainly composed of diodes, resistors and capacitors. Figure 3 As shown, preferably, an RCD clamp circuit is connected in parallel between the drain of the switch MOSFET and the connection point of the transformer primary winding and the ground, which consists of a diode D2, a resistor R29, a resistor R13, a resistor R14 and a capacitor C4. Among them, the fast recovery diode D2 has a rated reverse voltage of 100V, the metal film resistor R29 is 33Ω / 1W, the metal film resistors R13 and R14 are 15K / 1W, and the high-voltage ceramic capacitor C4 is 1nF / 1kV.

[0069] When the MOSFET is turned off, the drain voltage increases. When the voltage exceeds the clamping voltage of the clamping circuit, D2 turns on and consumes the excess energy through resistors R13, R14 and capacitor C4, thereby limiting the rise of the drain voltage. By adjusting the parameters of resistors R13, R14 and capacitor C4, the size of the clamping voltage can be controlled.

[0070] After testing, the clamping voltage of the drain clamp protection circuit is 650V, which can effectively protect the MOSFET from overvoltage breakdown. At the same time, due to the use of fast recovery diodes and low ESR capacitors, the clamp circuit has a fast response speed, which can effectively suppress high-frequency oscillation and further improve EMI performance.

[0071] Through the design of the above EMI filter circuit and drain clamp protection circuit, this embodiment not only improves the EMC performance of the driving power supply, but also enhances the reliability and anti-interference ability of the circuit, making it more suitable for use in various complex electromagnetic environments. At the same time, these protection measures also extend the service life of the LED lamp and improve the overall quality of the product.

[0072] The driving power supply control circuit according to the embodiment of the present invention effectively solves the monochromatic light tailing problem caused by the different forward voltages of different wavelength LEDs in the five-primary color fluorescent powder-free LED lamps and the mutual interference problem of different electronic devices. On the one hand, it can provide a stable and efficient driving power supply for the five-primary color LED powder-free lamps to ensure that the LED powder-free lamps can continue to operate stably. On the other hand, it can detect the spectral distribution and temperature of the LED powder-free lamps in real time, and can adaptively adjust the output of each channel LED according to the detected parameters to achieve a high color rendering index and dynamic light color balance. More importantly, the driving power supply based on the control circuit of the present invention also has the following advantages: Intelligent adaptive control: The stacked ensemble learning method is used in the execution of control strategies to achieve predictive parameter adjustment, dynamic temperature compensation and energy efficiency optimization, which can adapt to the needs of different lighting scenarios.

[0073] Remote monitoring and control: By integrating WiFi and Bluetooth wireless communication modules in the receiving module, it is possible to receive the working status data of LED lamps in real time, detect and handle faults in time, and has good scalability.

[0074] User-friendly: The present invention can also support multi-user configuration and circadian rhythm lighting functions, which can automatically optimize lighting parameters according to user preferences and natural light changes to provide a more comfortable lighting experience.

[0075] Example 2 A driving power supply control method, such as Figure 6 As shown, Temperature compensation and PWM duty cycle calculation are key steps to achieve high color rendering index and dynamic light color balance. In specific implementation, the steps are as follows: Step S101: The control module selects a spectrum template at random, and provides different currents to different channels of the lamp based on the selected spectrum template to light up the lamp.

[0076] Specifically, spectral template selection: The control module selects any one of the 10 built-in spectral templates, and based on the parameters of the selected spectral template, such as the target color rendering index Ra, target correlated color temperature CCT and target illumination, provides different currents to the different channel LEDs of the lamp to light up the lamp. The system adjusts the current output through PWM signals according to the needs of different channel LEDs. Step S102: the collection module collects the spectrum data and temperature data of the current environment of the lamp in real time.

[0077] Specifically, the acquisition module collects the spectral data output by the lamp in real time through the spectral sensor, measures the current spectral distribution, color rendering index Ra and correlated color temperature CCT. At the same time, the temperature sensor collects the real-time temperature of the LED chip to ensure the data basis for light color compensation and temperature compensation.

[0078] Step S103, calculating the current color rendering index Ra, the current correlated color temperature CCT and the current illuminance according to the spectral data.

[0079] Step S104, the receiving module receives control parameters, wherein the control parameters include a target color rendering index, a target color temperature and a target illumination, wherein the control parameters will be used as a reference for the control algorithm.

[0080] Step S105, the control module compares the calculated current color rendering index Ra, current correlated color temperature CCT and current illuminance with the control parameters, and calculates a target PWM duty cycle that meets the control parameter requirements; Specifically including, PWM duty cycle calculation: The control module compares the current color rendering index Ra, the current correlated color temperature CCT and the current illuminance with the control parameters, and selects the initial PWM duty cycle that meets the control parameter requirements. The algorithm logic is based on difference calculation: the system uses the target parameter (such as the difference between the target color rendering index Ra and the current Ra) as the error value, and adjusts the PWM duty cycle through the proportional integral differential (PID) control algorithm to ensure that the output light color is consistent with the target light color. The step size of each PWM signal is adjusted based on the size of the error. A larger error will trigger a larger PWM adjustment. When the error decreases, the adjustment step size decreases accordingly to achieve a smooth dimming effect.

[0081] Step S106, obtaining the light output according to the temperature data, and calculating the PWM duty cycle to be compensated based on the light output. Specifically comprising: Based on the real-time collected LED chip temperature data, the control module calculates the PWM duty cycle that needs to be compensated through the relationship curve between temperature and light output. This compensation process ensures that the attenuation of LED luminous flux can be corrected in real time when the temperature rises. Temperature compensation algorithm: Relationship curve: The system has pre-stored the relationship curve between LED chip temperature and light output. According to the current temperature, query the relationship curve to obtain the change coefficient of LED light output.

[0082] Compensation formula: The control module calculates the PWM duty cycle to be compensated according to the formula: is the PWM duty cycle after compensation; is the initial PWM duty cycle (i.e. the uncompensated PWM value at the current ambient temperature); γ is the compensation coefficient of PWM duty cycle (this coefficient is determined based on the test results of LED characteristics, light color shift and light output variation, and is usually between 0.001 and 0.003); T−T0 is the difference between the current temperature and the reference temperature.

[0083] Step S107: output a PWM signal based on the target PWM duty cycle and the PWM duty cycle to be compensated. The final PWM duty cycle is determined by the target PWM duty cycle and the PWM duty cycle to be compensated. The control module sends the adjusted PWM signal to the drive module to control the driving current of the LED.

[0084] Step S108, the control module controls the driving module to stably output an independent constant current signal. The driving module stably outputs a constant current signal based on the received PWM signal to ensure that the light output of each LED channel is consistent with the adjusted PWM signal to maintain a constant lighting effect of the lamp.

[0085] It should be noted that, before step S101, a spectrum template is pre-stored in the control module to facilitate adaptive lighting of the lamp when in use.

[0086] It should be noted that the current color rendering index Ra, correlated color temperature CCT and illuminance are calculated based on the collected spectral data using the chromaticity parameters and lookup table pre-stored in the control module.

[0087] It should be noted that step S108 also includes the control module sending current working status data, including color rendering index Ra, correlated color temperature CCT, illuminance and LED temperature and other information to the remote control device to achieve real-time monitoring.

[0088] In this embodiment, through spectral detection feedback, intelligent control and temperature compensation technology, high-quality lighting in terms of color rendering index, color temperature stability and intelligence of the five-primary color LED powder-free lamp is achieved.

[0089] Specific color rendering index effect and color tolerance effect of powder-free LED lamps are as follows: Figure 7 and Figure 8 shown.

[0090] Example 3 A driving power supply control circuit lighting application method can achieve ambient light adaptation, and the specific steps are as follows: Step S201: When the five-primary-color LED powder-free lamp is not turned on, the spectrum sensor collects spectrum distribution data of the ambient light.

[0091] Step S202: The control module analyzes the collected ambient light data and calculates ambient light parameters, including color rendering index Ra_env, correlated color temperature CCT_env and illuminance Lux_env.

[0092] Step S203: According to the ambient light parameters, the control module automatically selects the most suitable spectrum template. The selection criteria are as follows: a) If Lux_env<100lux, select the “Natural Light” template; b) If 100lux≤Lux_env<500lux, select the “Working Environment” template; c) If Lux_env ≥ 500lux, select the “Leisure Mode” template; It should be noted that the spectrum templates in this example are pre-stored in the spectrum template library of the control module 300. Each template contains the relative intensity ratio of five primary color LEDs (blue, cyan, green, yellow, and red), the target color rendering index Ra, the target correlated color temperature CCT, and the target illumination.

[0093] Step S204: The control module makes the following adjustments based on the selected template: a) Adjust the target correlated color temperature CCT to within the range of CCT_env±50K; b) Adjust the target illumination to 750 lux; Step S205: According to the parameters of the spectrum template, the control module calculates the initial value of the driving current of each LED of the five-primary-color LED powder-free lamp.

[0094] Step S206: The control module adjusts the output of each LED to the initial value calculated in step S205 by adjusting the duty cycle of the PWM signal of the multi-channel light source driving module.

[0095] Step S207: The spectrum sensor collects spectrum distribution data of LED output light in real time.

[0096] Step S208: According to the collected spectral distribution data, the control module calculates the actual color rendering index Ra, correlated color temperature CCT and illuminance.

[0097] Step S209: the control module compares the calculated actual color rendering index Ra, correlated color temperature CCT and illuminance with the target color rendering index Ra, target correlated color temperature CCT and target illuminance in the spectrum template.

[0098] Step S210: If there is a deviation, the control module fine-tunes the driving current of each LED and repeats steps S207 to S210 until the target value is reached or the deviation is within an acceptable range.

[0099] It should be noted that, in this embodiment, the deviation should be controlled within the following acceptable range: Color rendering index Ra error ≤ ±1; Correlated color temperature CCT error ≤ ±50K; Illumination error ≤±5%.

[0100] The driving power supply control circuit lighting application method of this embodiment has the ability to adapt to ambient light. The spectrum sensor is not only used to monitor the LED output, but also to collect ambient light data when the LED is not turned on. The controller analyzes this data, calculates the color rendering index, correlated color temperature and illumination of the ambient light, and automatically selects or adjusts the most suitable spectrum template accordingly. Ensure that the output of the LED lamp can be harmoniously integrated with the ambient light to provide a more comfortable lighting experience.

[0101] Example 4 A lighting application method of a driving power supply control circuit, wherein a control module has multiple preset spectrum templates built in, and circadian rhythm lighting can be realized, specifically comprising the following steps: Step S301: The control module has a built-in real-time clock (RTC) module for obtaining the current time.

[0102] Step S302: The control module obtains accurate date and time information from the network time server through the wireless communication module, and obtains the sunrise and sunset times of the day according to the geographical location information set by the user.

[0103] Step S303: After getting up in the morning, the control module controls the lighting of the lamps. The control module dynamically adjusts the color temperature and illumination of the LED according to the following rules based on the sunrise time and real-time time in the current area: a) 1 hour before sunrise to 2 hours after sunrise: the color temperature gradually increases from 2000K to 5000K, and the illumination gradually increases from 100lux to 500lux.

[0104] b) 1 hour after sunrise to 1 hour before sunset: keep the color temperature between 5000K and 6500K and the illumination between 500lux and 1000lux.

[0105] c) 1 hour before sunset to 3 hours after sunset: the color temperature gradually decreases from 5000K to 2000K, and the illumination gradually decreases from 500lux to 100lux.

[0106] d) 3 hours after sunset to bedtime: keep the color temperature at around 2000K, the illumination between 50lux and 100lux, and turn off the lights when sleeping.

[0107] It should be noted that the sunrise and sunset in this embodiment refer to a certain time period of a day, including but not limited to a certain hour.

[0108] Step S304: the control module adjusts the color temperature and illumination every 2 minutes as a time period, and each adjustment range does not exceed 50K (color temperature) and 5lux (illuminance).

[0109] Step S305: after each adjustment, the control module calculates the initial value of the driving current of each LED of the five-primary-color LED powder-free lamp according to the parameters of the spectrum template.

[0110] Step S306: The control module adjusts the output of each LED to the initial value calculated in step S305 by adjusting the duty cycle of the PWM signal of the multi-channel light source driving module.

[0111] Step S307: The spectrum sensor collects spectrum distribution data of LED output light in real time.

[0112] Step S308: According to the collected spectral distribution data, the control module calculates the actual color rendering index Ra, correlated color temperature CCT and illuminance.

[0113] Step S309: the control module compares the calculated actual color rendering index Ra, correlated color temperature CCT and illuminance with the target color rendering index Ra, target correlated color temperature CCT and target illuminance in the spectrum template.

[0114] Step S310: If there is a deviation, the control module fine-tunes the driving current of each LED and repeats steps S307 to S310 until the target value is reached or the deviation is within an acceptable range.

[0115] It should be noted that, in this embodiment, the acceptable range should be specifically controlled within the following range: Color rendering index Ra error ≤ ±1; Correlated color temperature CCT error ≤ ±50K; Illumination error ≤±5%.

[0116] This embodiment supports users to select and implement automatic calibration by building in multiple preset spectral templates, and can sense the ambient light conditions, automatically adjust the spectral template parameters, achieve ambient light adaptation, and realize intelligent dimming of circadian rhythm based on the real-time clock and sunrise and sunset times, simulating the natural light environment, providing a more intelligent and comfortable lighting experience, and helping to maintain the user's physiological rhythm.

[0117] Example 5 A lighting application method for a driving power supply control circuit, wherein an intelligent control algorithm based on machine learning is adopted in the method, and the specific steps are as follows: Step S401: Data collection and preprocessing, the control module continuously collects the following data: lighting parameters set by the user, ambient light data, LED temperature data, and time information, wherein the lighting parameters include: color temperature, brightness, and mode, etc., the ambient light data includes spectrum and illumination, and the time information includes time, week, and season; It is worth mentioning that in this embodiment, in order to provide a satisfaction score through the application, in the step S401, user feedback data can also be continuously collected.

[0118] Step S402: The control module preprocesses the collected data, including normalization, missing value processing and outlier detection.

[0119] Step S403: The control module uses three models, namely, the gradient boosting decision tree (GBDT), the neural network (NN), and the stacking ensemble (Stacking), for training. The GBDT model is used to predict the lighting parameters preferred by the user; the neural network model is used to predict the temperature change of the LED; and the stacking ensemble model combines the outputs of the GBDT and NN to generate the final lighting parameter adjustment suggestions.

[0120] Step S404: Based on the trained model, the control module predicts the lighting parameters that the user may prefer at a specific time and environment. Based on the prediction, the control module gradually adjusts the lighting parameters 15 minutes to 30 minutes in advance to achieve a smooth transition.

[0121] Step S405: The control module predicts the temperature change trend of the LED using the neural network model. According to the predicted temperature change, the control module dynamically adjusts the temperature compensation coefficient to ensure the stability of the light color.

[0122] Step S406: On the premise of meeting the user's lighting needs, the control module adjusts the driving current distribution of each LED to select the parameter combination with the lowest energy consumption while ensuring the spectrum quality.

[0123] Step S407: The system supports 5 user profiles. Each user profile contains independent lighting models and historical data, and automatically switches to the corresponding profile according to the current user, wherein the identity information of the current user can be obtained through user login information or intelligent recognition.

[0124] Step S408: The control module monitors the temperature, current, and spectral parameters of the target LED in real time. When abnormal fluctuations are detected, the control module will immediately take measures to reduce the drive current of the target LED, adjust the output of LEDs other than the target LED to maintain normal lighting effects, and send a warning message to the user through the wireless communication module.

[0125] It should be noted that, in step S408, the abnormal fluctuation includes but is not limited to a sudden temperature increase, spectral anomaly, etc.

[0126] This embodiment uses machine learning, specifically including gradient boosting decision trees, neural networks, and stacked ensemble learning methods. This algorithm combination enables the system to analyze user behavior patterns, LED temperature changes, and environmental factors, and realize multiple intelligent functions. The system has predictive parameter adjustment capabilities. By analyzing historical data, the system learns user preferences and LED temperature change patterns, and can predict and adjust output parameters 15 minutes to 30 minutes in advance to achieve a smooth transition. It not only improves the user experience, but also helps to extend the life of the LED. Secondly, the system can realize dynamic temperature compensation. Based on the neural network model, it can predict the trend of LED temperature changes and adaptively adjust the temperature compensation coefficient according to the predicted changes. Ensure that stable light color output can be maintained at different ambient temperatures. The system intelligently selects the most energy-saving parameter combination while ensuring user experience. By adjusting the drive current distribution of each LED, energy consumption is minimized while ensuring spectral quality. The system supports up to 5 user profiles to establish an independent lighting model for each user. This enables the system to automatically adjust lighting parameters according to the habits and preferences of different users. Through continuous learning and optimization of the algorithm, the system evaluates and adjusts the algorithm every 7 days to ensure a prediction accuracy of more than 85%. At the same time, the system has real-time anomaly detection and processing capabilities, which can cope with sudden temperature fluctuations or other abnormal situations, ensuring the stability and security of the system.

[0127] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the invention.

[0128] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0129] Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Mentioning "embodiment" in this article means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present embodiment application. The appearance of this phrase in various positions in the specification is not necessarily the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It can be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0130] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A driving power supply control circuit, applied to a five-primary-color LED powder-free lamp, characterized in that: include: A collection module (100), used for collecting spectrum data and temperature data of the current environment; A receiving module (200) is used to receive control parameters, wherein the control parameters include a target color rendering index, a target color temperature, and a target illumination; A control module (300) connected to the acquisition module (100) and used to calculate a current color rendering index Ra, a current correlated color temperature CCT and a current illuminance according to the spectral data, and to calculate a PWM duty cycle to be compensated according to the temperature data; the control module (300) is connected to the receiving module (200), and obtains a target PWM duty cycle based on the current color rendering index Ra, the current correlated color temperature CCT, the current illuminance and the control parameter, and outputs a PWM signal based on the target PWM duty cycle and the PWM duty cycle to be compensated; The driving module (400) is connected to the control module (300) and stably outputs an independent constant current signal based on the PWM signal.

2. The driving power supply control circuit according to claim 1, characterized in that: It also includes a voltage balancing circuit (6) which is connected to the control module (300) and the drive module (400) respectively.

3. The driving power supply control circuit according to claim 1, characterized in that: It also comprises a power management unit (1), which is respectively connected to the acquisition module (100) and the control module (300) and is used to convert alternating current into direct current, wherein the power management unit (1) adopts a single-ended flyback topology structure, comprises a filter circuit and a drain clamp protection circuit, wherein the input end and the output end of the drain clamp protection circuit are respectively connected to the filter circuit.

4. The driving power supply control circuit according to claim 1, characterized in that: The control module adjusts the LED drive current by calculating and adjusting the PWM duty cycle to be compensated to compensate for the light color deviation caused by temperature change. The adjustment range of the PWM duty cycle to be compensated is 0% to 100%, with a resolution of 0.1%.

5. The driving power supply control circuit according to claim 1, characterized in that: The control module (300) has a plurality of built-in spectrum templates, each spectrum template including a relative spectrum of an LED powder-free lamp, a target color rendering index Ra, a target correlated color temperature CCT, and a target illumination.

6. The driving power supply control circuit according to claim 1, characterized in that: In the control strategy, the light output is obtained according to the temperature data, and the PWM duty cycle to be compensated is calculated based on the light output, specifically: A relationship curve between LED light output and temperature change is pre-stored in the control module (300); Obtaining the LED light output according to the temperature data and referring to the relationship curve; Based on the LED light output, the control module (300) calculates the PWM duty cycle to be compensated, and dynamically adjusts the PWM duty cycle of each LED to change the driving current to compensate for the light color deviation caused by temperature change.

7. A driving power supply control method, characterized in that: The method comprises using the driving power supply control circuit as claimed in any one of claims 1 to 6 to control a five-primary-color LED powder-free lamp, comprising the following steps: Step S101, the control module selects a spectrum template at random, and provides different currents to different channels of the lamp based on the selected spectrum template to light up the lamp; Step S102, the collection module collects the spectrum data and temperature data of the current environment of the lamp in real time; Step S103, calculating the current color rendering index Ra, the current correlated color temperature CCT and the current illuminance according to the spectral data; Step S104, the receiving module receives control parameters, wherein the control parameters include a target color rendering index, a target color temperature, and a target illumination; Step S105, the control module compares the calculated current color rendering index Ra, current correlated color temperature CCT and current illuminance with the control parameters, and calculates a target PWM duty cycle that meets the control parameter requirements; Step S106, obtaining a light output according to the temperature data, and calculating a PWM duty cycle to be compensated based on the light output; Step S107, outputting a PWM signal based on the target PWM duty cycle and the PWM duty cycle to be compensated; Step S108: the control module controls the driving module to stably output an independent constant current signal.

8. A driving power lighting application method, characterized in that: The method comprises using the driving power supply control circuit as claimed in any one of claims 1 to 6 to control a five-primary-color LED powder-free lamp, wherein the lighting application method is rhythmic lighting, and comprises the following contents: Spectral template setting: The user can preset 10 spectral templates through the control module, each of which contains the parameters of the target color rendering index Ra, correlated color temperature CCT and illumination; Ambient light adaptation adjustment: Based on the ambient light data collected in real time by the spectral sensor, the control module automatically adjusts the output spectrum distribution and brightness of the LED to adapt to changes in ambient light and ensure that the lighting effect matches the current ambient light conditions; Adjustment of time and geographic location information: The control module automatically adjusts the color temperature and illumination of the LED lamps based on the user's preset geographic location and time information, with an update frequency of every 2 minutes. The color temperature adjustment range is 2000K to 6500K, and the illumination adjustment range is 0 to 1000lux, to simulate the day and night changes of natural light and achieve the effect of rhythmic lighting; Intelligent coordinated control: The control module coordinates various functional modules by real-time monitoring of spectral data, temperature data and control parameters to achieve intelligent integrated control of spectral distribution control, ambient light adaptation and circadian rhythm lighting, ensuring that the system automatically adjusts light output according to the current environment to maintain stable and efficient lighting effects.

9. A driving power lighting application method, characterized in that: The method comprises using the driving power supply control circuit as claimed in any one of claims 1 to 6 to control the five-primary-color LED powder-free lamp, wherein the lighting application method adopts an intelligent control algorithm based on machine learning, and the specific steps are as follows: Step S401: data collection and preprocessing, the control module continuously collects the following data: lighting parameters set by the user, ambient light data, LED temperature data, and user feedback data, wherein the lighting parameters include: color temperature, brightness and mode, the ambient light data includes spectrum and illumination, and the time information includes time, week and season; Step S402: the control module preprocesses the collected data, including normalization, missing value processing and outlier detection; Step S403: The control module uses three models, namely, a gradient boosting decision tree, a neural network and a stacking ensemble, for training. The gradient boosting decision tree model is used to predict the lighting parameters preferred by the user, the neural network model is used to predict the temperature change of the LED, and the stacking ensemble model integrates the outputs of the gradient boosting decision tree and the neural network to generate the final lighting parameter adjustment suggestion. Step S404: Based on the trained model, the control module predicts the lighting parameters that the user may prefer at a specific time and environment, and based on the prediction, the control module begins to gradually adjust the lighting parameters 15 minutes to 30 minutes in advance to achieve a smooth transition; Step S405: The control module predicts the temperature change trend of the LED using the neural network model. According to the predicted temperature change, the control module dynamically adjusts the temperature compensation coefficient to ensure the stability of the light color. Step S406: Under the premise of meeting the lighting needs of the user, the control module adjusts the driving current distribution of each LED to select the parameter combination with the lowest energy consumption while ensuring the spectrum quality; Step S407: The system supports multiple user profiles, records each user profile including an independent lighting model and historical data, and automatically switches to the corresponding profile according to the current user; Step S408: The control module monitors the target LED temperature, current, and spectral parameters in real time. When abnormal fluctuations are detected, the control module will immediately take measures to adjust the LED drive current to maintain normal lighting effects and send a warning message to the user through the wireless communication module.

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