Panel lamp integrated with three-gear dial switch to adjust color temperature

Abstract

The invention relates to the technical field of light regulation and control, in particular to a panel lamp integrated with a three-gear dial switch for adjusting color temperature, which is characterized in that an all-time lamp bead operation monitoring system is constructed, the abnormal operation state of equipment is recognized and early warned in time, the risk of lamp bead damage is avoided, and the overall service life of the panel lamp is prolonged. Based on standardized luminous decay data calibration, grading color temperature fine adjustment adaptive to the whole life cycle of the lamp beads and a stable stepped current adjustment scheme, precise color temperature compensation after luminous decay is achieved, the problems of sudden color temperature change and excessive compensation are avoided, and meanwhile, through multi-unit collaboration, the color temperature compensation precision is improved. The full-process automatic management and control of the panel lamp from data acquisition, state judgment to color temperature adjustment is realized, the manual maintenance cost is reduced, finally, the high-quality panel lamp which is convenient to operate, accurate in color temperature, stable in operation and adaptive to long-term use requirements is provided for a user, and the defects of the traditional technology in color temperature regulation and control and equipment management of the double-color-temperature panel lamp are overcome.

Description

Technical Field

[0001] This invention relates to the field of lighting control technology, and in particular to a panel light with an integrated three-level DIP switch for adjusting color temperature. Background Technology

[0002] Panel lights, as a common indoor lighting fixture, are widely used in various scenarios such as homes, offices, and commercial spaces due to their thinness, uniform illumination, and convenient installation. With the upgrading of lighting needs, users have put forward higher requirements for the color temperature adjustment function of panel lights. Dual-color temperature LED panel lights with switchable color temperature are gradually becoming mainstream products. Most dual-color temperature LED panel lights on the market achieve color temperature level switching through DIP switches, touch buttons, etc. Among them, three-level DIP switches have become a common configuration for panel light color temperature adjustment due to their simple operation and low cost.

[0003] Currently, while dual-color temperature panel lights with integrated DIP switches can achieve basic color temperature level switching, they still have many technical shortcomings in actual use, making it difficult to meet users' needs for color temperature accuracy, lamp operation stability, and lifespan. Specific problems are reflected in the following aspects:

[0004] First, the color temperature adjustment only achieves basic level switching and lacks an adaptive light decay compensation mechanism: During long-term use, the light flux of the cool and warm light beads in the dual-color temperature LED bead group will decrease to varying degrees and the luminous efficiency will decrease. Moreover, the light decay rate of the cool and warm light beads is different, that is, asynchronous light decay. The dimming driver power supply of conventional panel lights only outputs according to a preset fixed current ratio and cannot sense the light decay status of the beads, nor can it adjust the current ratio according to the light decay difference. As a result, after the beads have been used for a period of time, the actual output color temperature will deviate significantly from the target color temperature, the color temperature accuracy will drop significantly, and the lighting experience will be affected.

[0005] Secondly, the lack of continuous monitoring of the lamp's operating status leads to untimely fault warnings: the control module of traditional panel lights does not have a systematic operation monitoring unit, which cannot continuously collect operating data such as current, voltage, and temperature rise of the lamp beads, nor has it established a benchmark data range for normal operation of the lamp beads. When the lamp beads exhibit abnormal operating states such as excessive current, excessive temperature rise, or single lamp bead going out, it cannot be judged and warned in time, nor can the color temperature adjustment operation be suspended. This can easily lead to further damage to the lamp beads, reduce the overall service life of the lamp, and increase the later maintenance costs.

[0006] In summary, to address the technical problems of traditional dual-color temperature panel lights with integrated DIP switches, such as low color temperature accuracy, lack of effective light decay compensation, and missing operation monitoring, a new panel light with an integrated three-position DIP switch for color temperature adjustment has been developed. This new panel light features convenient position switching, all-time operation monitoring, graded fine-tuning adaptable to the entire life cycle, and stepped current adjustment. This addresses the shortcomings of existing technologies, improves the color temperature accuracy, operational stability, and lifespan of the panel light, and meets users' high-quality lighting needs. Summary of the Invention

[0007] This invention addresses the technical shortcomings of traditional dual-color temperature panel lights in terms of color temperature adjustment, operation monitoring, and light decay compensation. It aims to provide a panel light with integrated three-level DIP switch for color temperature adjustment. The core objective is to enable convenient multi-level color temperature switching, while simultaneously resolving color temperature deviation issues caused by light decay during long-term use of the LEDs. This improves the accuracy and stability of color temperature adjustment, providing users with a high-quality panel light that is easy to operate, has accurate color temperature, operates stably, and is suitable for long-term use. It also overcomes the deficiencies of traditional technologies in color temperature control and equipment management for dual-color temperature panel lights.

[0008] The objective of this invention can be achieved through the following technical solution: a panel light with an integrated three-level DIP switch for adjusting color temperature, comprising a panel light frame, a panel light cover fixedly connected to the inside of the front surface of the panel light frame, a panel base fixedly connected to the inside of the rear surface of the panel light frame, and a warm white and cool white dual-color temperature LED bead group fixedly connected to the side of the panel base near the panel light cover.

[0009] A PCB control module is fixedly connected to one side surface of the panel base. The PCB control module contains a database, a data sensing unit, a dynamic control unit, a fine-tuning management unit, and a step control unit.

[0010] Preferably, the data sensing unit continuously collects light decay data and operating data of the warm white and cool white dual-color temperature LED bead group at any color temperature level, and at the same time obtains the reference data of the warm white and cool white dual-color temperature LED bead group, and stores all light decay data, operating data and reference data in the database of the PCB control module.

[0011] The dynamic control unit is used to collect multi-dimensional working information of warm white and cool white dual-color temperature LED lamp beads, and to perform initial color temperature monitoring and discrimination analysis on the multi-dimensional working information, and output color temperature adjustment permission signal or fault warning signal.

[0012] When a color temperature adjustment permission signal is issued, the fine-tuning management unit retrieves the light decay rate LS of the cold light bulb and the light decay rate NS of the warm white and cool white dual-color temperature LED bulb groups, and analyzes them in conjunction with the current target color temperature CT, and outputs the preset current adjustment range of the corresponding fine-tuning level.

[0013] The stepped control unit is used to divide ΔCT, and at the same time, combined with the initial ratio of the dual current corresponding to the current target color temperature, it performs stepped adjustment operation for color temperature that is too warm or too cool, and outputs the current current ratio list or fault warning signal.

[0014] Preferably, the initial color temperature monitoring and discrimination analysis process is as follows:

[0015] T1: Set the monitoring cycle and retrieve the multi-dimensional working information of the warm white and cool white dual-color temperature LED bead groups collected in real time from the database;

[0016] T2: Compare each indicator with the baseline data to determine if the LED is in normal working condition: If all monitored operating indicators are within the normal baseline range, the LED is determined to be operating normally, and the PCB control module sends a color temperature adjustment permission signal. If any operating indicator exceeds the normal baseline range, the LED is determined to be operating abnormally, and the PCB control module sends a fault warning signal. At the same time, all color temperature fine-tuning operations are suspended until the fault is eliminated and the operating status returns to normal. Then, T1 is triggered again and this step is executed again.

[0017] Preferably, when a color temperature adjustment permission signal is issued, the fine-tuning management unit performs the following analysis:

[0018] S1: Obtain the light decay rate LS of the cold light LED beads and the light decay rate NS of the warm white and cool white dual-color temperature LED bead groups based on the database;

[0019] Retrieve the preset LED light decay coefficient k, and calibrate the light decay rate LS of the cold light LED and the light decay rate NS of the warm light LED based on the preset LED light decay coefficient k:

[0020] Calibrate the light decay rate of cold light LED beads = LS × k, calibrate the light decay rate of warm light LED beads = NS × k.

[0021] Preferably, it also includes S2: setting the current target color temperature CT, the initial current ratio of the cold and warm light beads in the warm white and cool white dual color temperature LED bead group under the current target color temperature CT is the cold light ratio DL and the warm light ratio DN, and the cold light ratio DL + warm light ratio DN = 1, the color temperature deviation value is calculated by the formula: ΔCT = current target color temperature CT × [cold light ratio DL × (1 - calibration cold light bead light decay rate) - warm light ratio DN × (1 - calibration warm light bead light decay rate)] × preset color temperature sensitivity coefficient;

[0022] If ΔCT = 0, it is determined to be synchronous optical decay; if ΔCT ≠ 0, a fine-tuning command is triggered.

[0023] S3: When the fine-tuning command is triggered, based on the cumulative working time LJ of the cold and warm light beads, the life stages of the cold and warm light beads are divided into the break-in period (meaning LJ < LJmin), the stable period (meaning LJ ∈ [LJmin, LJmax]), and the aging period (meaning LJ > LJmax).

[0024] During the break-in period, stable period, and aging period, the fine-tuning threshold and preset current adjustment range of ΔCT are set. Based on the current life stage of the cold and warm light beads and the corresponding fine-tuning level of ΔCT in the life stage, the preset current adjustment range of the corresponding fine-tuning level is output.

[0025] Preferably, the analysis process for the step adjustment operation is as follows:

[0026] Retrieve the initial dual-current ratio corresponding to the current target color temperature from the database, including the reference current LA of the cool bead, the reference current NA of the warm bead, and their total current (representing the reference current of the cool bead + the reference current of the warm bead).

[0027] If ΔCT is positive, the color temperature is determined to be cool; if ΔCT is negative, the color temperature is determined to be warm.

[0028] The number of steps N is automatically matched according to the fine-tuning level. If N > 0, the single-step adjustment range ΔP is obtained. ΔP = preset current adjustment range / N.

[0029] Preferably, when the color temperature is too cool or too warm, the current of the warm light bead or the current of the cool light bead is adjusted based on the step adjustment command. Specifically, when the color temperature is too cool, the current of the warm light bead is adjusted, and when the color temperature is too warm, the current of the cool light bead is adjusted.

[0030] After adjusting to the warm light bead reference current NA×(1+ΔP) or the cold light bead reference current LA×(1+ΔP), the maximum operating current threshold of the cold / warm light bead is set simultaneously. If the current exceeds the maximum operating current threshold after a certain step adjustment, the adjustment is immediately stopped, the current is restored to the upper limit of the threshold, and a voice warning of "excessive light decay requires replacement of the LED bead" is issued.

[0031] Preferably, the actual color temperature value of the current panel light is collected, and then the current deviation value is obtained. If the current deviation value is less than or equal to the preset allowable error, it is determined that the compensation is in place and the subsequent step adjustment is terminated. If the current deviation value is greater than the preset allowable error, the next step adjustment is executed. The adjustment-current deviation value comparison process is repeated until all step sequences are completed.

[0032] If the current deviation value is still greater than the preset allowable error after all step adjustments are completed, the PCB control module will issue a fault warning signal and suspend all color temperature fine-tuning operations until it returns to normal. Then, T1 will be triggered again and this step will be executed again.

[0033] If, after all step adjustments are completed, the current deviation value is less than or equal to the preset allowable error for three consecutive times, the average of the three consecutive current deviation values ​​is taken as the final color temperature value. The final color temperature value is compared with the target color temperature. If the deviation between the final color temperature value and the target color temperature is less than or equal to the preset deviation, the dual-channel current ratio fine-tuning is determined to be complete, and the current current ratio list is output.

[0034] The beneficial effects of this invention are as follows:

[0035] (1) This invention uses the coordinated work of each unit in the PCB control module to accurately determine whether the LED bead group is in normal working condition. It can immediately issue a fault warning signal and suspend the color temperature fine-tuning operation until the fault is eliminated. This avoids damage to the equipment caused by abnormal operation from the source, ensures the stable operation of the panel light, and extends the overall service life of the equipment. In addition, it designs a light decay rate calculation and calibration process. It accurately calculates the light decay rate of cold and warm light LED beads through formulas and calibrates it in combination with the preset light decay coefficient of LED beads. This effectively eliminates the light decay data deviation caused by the characteristics of the LED beads themselves. At the same time, it divides the lifespan stage in combination with the cumulative working time of the LED beads, so that the analysis of light decay data is more in line with the actual use status of the LED beads.

[0036] (2) The present invention also divides different fine-tuning levels according to the range of color temperature deviation values. At the same time, it combines the full life stage characteristics of the lamp bead's break-in period, stabilization period and aging period to match the corresponding preset current adjustment amplitude for each fine-tuning level of each stage, so as to realize the precise fine-tuning of color temperature by grade, avoid the problem of insufficient or excessive color temperature compensation caused by a single adjustment standard. At the same time, a stepped current adjustment scheme is designed. According to the fine-tuning level, the corresponding number of steps is matched, and the total current adjustment amplitude is divided into multiple equal single-step adjustment amplitudes to gradually complete the current ratio optimization, so that the color temperature compensation is more stable and effectively improves the accuracy of color temperature adjustment. Attached Figure Description

[0037] The invention will now be further described with reference to the accompanying drawings;

[0038] Figure 1 This is a three-dimensional view of the structure of the present invention;

[0039] Figure 2 This is a flowchart of the system of the present invention;

[0040] Figure 3 This is a reference analysis diagram of the fine-tuning management unit of the present invention;

[0041] Illustration: 1. Panel lamp holder; 2. Panel lamp shade; 3. Panel base. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments;

[0044] Example 1: Please refer to Figures 1 to 3 As shown, the present invention is a panel light with an integrated three-position DIP switch for adjusting color temperature. It includes a panel light holder 1, a panel light cover 2 fixedly connected to the inside of the front surface of the panel light holder 1, a panel base 3 fixedly connected to the inside of the rear surface of the panel light holder 1, and a warm white and cool white dual-color temperature LED bead group fixedly connected to the side of the panel base 3 near the panel light cover. The user can switch between three color temperatures by controlling the three-position DIP switch to switch between different positions.

[0045] For example, the specific color temperature switching operation is as follows:

[0046] When a user switches to a certain position (such as warm white / neutral white / cool white) using a three-position DIP switch, the three-position DIP switch will send an electrical signal corresponding to the position to the PCB control module, and the PCB control module will transmit the electrical signal corresponding to the position to the dimming drive power supply.

[0047] The dimming driver power supply receives the electrical signal of the corresponding level based on a preset program (such as pre-stored dual-channel constant current output ratio parameters corresponding to the three levels), and outputs a preset reference (such as current, voltage, etc.) to adjust the color temperature of the warm white and cool white dual-color temperature LED lamp beads.

[0048] A PCB control module is fixedly connected to one side surface of the panel base 3. The PCB control module is equipped with a database, a data sensing unit, a dynamic control unit, a fine-tuning management unit, and a step control unit. The database is connected to the data sensing unit and the dynamic control unit. The dynamic control unit is connected to the fine-tuning management unit. The fine-tuning management unit is connected to the step control unit.

[0049] The data sensing unit continuously collects light decay data such as luminous flux attenuation value and luminous efficiency change value of the warm white and cool white dual-color temperature LED chip group at any color temperature level, as well as operating data such as current and voltage. At the same time, it acquires the reference data of the warm white and cool white dual-color temperature LED chip group. The reference data includes the rated parameters of the LED chips of the warm white and cool white dual-color temperature LED chip group (such as rated luminous flux, luminous efficiency, rated operating current / voltage, rated temperature rise threshold), color temperature deviation threshold gradient, operating status monitoring and judgment criteria, initial light emission reference value (representing the initial light emission data of the warm white and cool white dual-color temperature LED chip group), and normal status reference range (representing the initial operating data of the LED chips under no-load / rated operation). All light decay data, operating data and reference data are stored in the database of the PCB control module.

[0050] The dynamic control unit is used to collect multi-dimensional operating information of the warm white and cool white dual-color temperature LED bead group, and to perform initial color temperature monitoring and discrimination analysis on the multi-dimensional operating information, outputting a color temperature adjustment permission signal or a fault warning signal, specifically including:

[0051] T1: Set the monitoring cycle and retrieve multi-dimensional working information such as real-time operating current, real-time operating voltage, real-time temperature rise, and actual lighting status of the warm white and cool white dual-color temperature LED bead groups from the database.

[0052] T2: Compare each LED with the baseline data to determine whether the LEDs are in normal working condition.

[0053] If all monitored operating indicators are within the normal baseline range, the LED is determined to be operating normally, and the PCB control module sends a color temperature adjustment permission signal.

[0054] If any operating indicator exceeds the normal baseline range (such as excessive current, excessive temperature rise, or LED bead going out), the LED bead is determined to be operating abnormally. The PCB control module issues a fault warning signal and suspends all color temperature fine-tuning operations until the fault is cleared and the operating status returns to normal. Then, T1 is triggered again and this step is executed again.

[0055] When a color temperature adjustment permission signal is issued, the fine-tuning management unit retrieves the light decay rates LS and NS of the cool white and warm white dual-color temperature LED bead groups, analyzes them in conjunction with the current target color temperature CT, and outputs the preset current adjustment range for the corresponding fine-tuning level, specifically including:

[0056] S1: Based on the database, obtain the light decay rate LS of the cold light LED beads and the light decay rate NS of the warm white and cool white dual-color temperature LED bead groups. Wherein, the light decay rate LS of the cold light LED beads = (initial luminous flux of the cold light LED beads - real-time luminous flux of the cold light LED beads) / initial luminous flux of the cold light LED beads × 100%, and the light decay rate NS of the warm light LED beads = (initial luminous flux of the warm light LED beads - real-time luminous flux of the warm light LED beads) / initial luminous flux of the warm light LED beads × 100%.

[0057] Retrieve the preset LED light decay coefficient k (the preset LED light decay coefficient k is provided by the LED manufacturer, or calibrated through aging tests during system initialization), and calibrate the light decay rate LS of the cold light LED and the light decay rate NS of the warm light LED based on the preset LED light decay coefficient k:

[0058] Calibrate the light decay rate of cold light LED beads = LS × k, calibrate the light decay rate of warm light LED beads = NS × k;

[0059] S2: Set the current target color temperature CT (e.g., 4000K). In the warm white and cool white dual-color temperature LED bead group, the initial current ratio of the cool light beads and the warm light beads under the current target color temperature CT is the cool light ratio DL and the warm light ratio DN, and the cool light ratio DL + warm light ratio DN = 1. The color temperature deviation value is calculated by the formula: ΔCT = current target color temperature CT × [cool light ratio DL × (1 - calibration cool light bead light decay rate) - warm light ratio DN × (1 - calibration warm light bead light decay rate)] × preset color temperature sensitivity coefficient;

[0060] If ΔCT = 0, it is determined to be synchronous optical decay; if ΔCT ≠ 0, a fine-tuning command is triggered.

[0061] S3: When the fine-tuning command is triggered, based on the cumulative working time LJ of the cold and warm light beads, the life stages of the cold and warm light beads are divided into the break-in period (meaning LJ < LJmin), the stable period (meaning LJ ∈ [LJmin, LJmax]), and the aging period (meaning LJ > LJmax).

[0062] During the break-in period, stable period and aging period, the fine-tuning threshold and preset current adjustment range of ΔCT are set. Based on the current life stage of the cold and warm light beads and the fine-tuning level of ΔCT in the corresponding life stage, the preset current adjustment range of the fine-tuning level is output.

[0063] That is: if the current cold and warm light beads are in the break-in period: if ΔCT < ΔCTmin, it is determined to be a first-level fine adjustment, and the preset current adjustment range corresponding to the first-level fine adjustment is retrieved; if ΔCT ∈ [ΔCTmin, ΔCTmax], it is determined to be a second-level fine adjustment, and the preset current adjustment range corresponding to the second-level fine adjustment is retrieved; if ΔCT > ΔCTmax, it is determined to be a third-level fine adjustment, and the preset current adjustment range corresponding to the third-level fine adjustment is retrieved.

[0064] If the current cold and warm light beads are in a stable period: if ΔCT < ΔCTmin, it is determined to be a first-level fine adjustment, and the preset current adjustment range corresponding to the first-level fine adjustment is retrieved; if ΔCT ∈ [ΔCTmin, ΔCTmax], it is determined to be a second-level fine adjustment, and the preset current adjustment range corresponding to the second-level fine adjustment is retrieved; if ΔCT > ΔCTmax, it is determined to be a third-level fine adjustment, and the preset current adjustment range corresponding to the third-level fine adjustment is retrieved.

[0065] If the current cold and warm light beads are in the aging period: if ΔCT < ΔCTmin, it is determined to be a level 1 fine adjustment, and the preset current adjustment range corresponding to the level 1 fine adjustment is retrieved; if ΔCT ∈ [ΔCTmin, ΔCTmax], it is determined to be a level 2 fine adjustment, and the preset current adjustment range corresponding to the level 2 fine adjustment is retrieved; if ΔCT > ΔCTmax, it is determined to be a level 3 fine adjustment, and the preset current adjustment range corresponding to the level 3 fine adjustment is retrieved.

[0066] Example 2: The stepped adjustment unit is used to divide ΔCT and, in conjunction with the initial dual-path current ratio corresponding to the current target color temperature, performs stepped adjustment operations for colors that are too warm or too cool, outputting a list of current ratios, specifically including:

[0067] Retrieve the initial dual-current ratio corresponding to the current target color temperature from the database, including the reference current LA of the cool bead, the reference current NA of the warm bead, and their total current (representing the reference current of the cool bead + the reference current of the warm bead).

[0068] If ΔCT is positive, the color temperature is determined to be too cool, indicating that the luminous intensity of the cold light bead is relatively too high (or the luminous intensity of the warm light bead is insufficient due to light decay). It is necessary to increase the current ratio of the warm light bead while keeping the current of the cold light bead unchanged.

[0069] If ΔCT is negative, it is determined that the color temperature is too warm, indicating that the luminous intensity of the warm light beads is relatively too high (or the luminous intensity of the cold light beads is insufficient due to light decay). It is necessary to increase the current ratio of the cold light beads while keeping the current of the warm light beads unchanged.

[0070] The number of steps N (N>0) is automatically matched according to the fine-tuning level. For example: Level 1 fine-tuning N=2, Level 2 fine-tuning N=3, Level 3 fine-tuning N=4 (an extra level can be added during the aging period to avoid excessive single adjustment).

[0071] Obtain the single-step adjustment amplitude ΔP, where ΔP = preset current adjustment amplitude / N. For example, for a total amplitude of 4% for the second-stage fine-tuning during the stabilization period: N = 3, ΔP = 1.33%. Generate step adjustment instructions from low to high, for example, for a total amplitude of 4%: the sequence is [1.33%, 2.66%, 4.00%].

[0072] When the color temperature is too cool or too warm, the current of the warm light bead or the current of the cool light bead is adjusted based on the step adjustment command. Specifically, when the color temperature is too cool, the current of the warm light bead is adjusted, and when the color temperature is too warm, the current of the cool light bead is adjusted.

[0073] After adjusting to the warm light bead reference current NA×(1+ΔP) or the cool light bead reference current LA×(1+ΔP), simultaneously set the maximum operating current threshold for the cool / warm light bead (e.g., 110% of the rated current). If the current exceeds the maximum operating current threshold after a certain step adjustment, immediately stop the adjustment and restore the current to the upper limit of the threshold (e.g., the maximum operating current threshold), while issuing a voice warning of "excessive light decay requires replacement of the LED bead".

[0074] Collect the actual color temperature value of the current panel light, and then obtain the current deviation value. If the current deviation value is ≤ the preset allowable error (e.g., ≤ 1%), it is determined that the compensation is in place and the subsequent step adjustment is terminated.

[0075] If the current deviation value is greater than the preset allowable error, execute the next step adjustment, repeat the adjustment-current deviation value comparison process, until all step sequences are completed;

[0076] If the current deviation value is still greater than the preset allowable error after all step adjustments are completed, the PCB control module will issue a fault warning signal and suspend all color temperature fine-tuning operations until the fault is eliminated and the operating status returns to normal. Then, T1 will be triggered again and this step will be executed again.

[0077] If, after all step adjustments are completed, the current deviation value is less than or equal to the preset allowable error for three consecutive times, the average of the three consecutive current deviation values ​​will be used as the final color temperature value.

[0078] The final color temperature value is compared with the target color temperature. If the deviation between the final color temperature value and the target color temperature is less than or equal to the preset deviation, the dual-channel current ratio fine-tuning is determined to be complete, and the current current ratio list is output.

[0079] If the deviation between the final color temperature value and the target color temperature is greater than the preset deviation, the dual-path current ratio fine-tuning is determined to have failed. The PCB control module issues a fine-tuning failure signal, pauses all color temperature fine-tuning operations, and executes the voice prompt "Fine-tuning failure" to promptly adjust the system and improve the effectiveness and reliability of fine-tuning.

[0080] Among them, the reference current of the warm light bead NA×(1+ΔP) or the reference current of the cold light bead LA×(1+ΔP) when the compensation is in place is the final fine-tuned warm light bead current or cold light bead current.

[0081] In summary, the coordinated operation of each unit in the PCB control module accurately determines whether the LED group is in normal working condition. It can immediately issue a fault warning signal and suspend the color temperature fine-tuning operation until the fault is eliminated. This avoids damage to the equipment caused by abnormal operation from the source, ensures the stable operation of the panel lights, and extends the overall service life of the equipment. In addition, the light decay rate calculation and calibration process is designed. The light decay rate of cold and warm light LEDs is accurately calculated by formula and calibrated by combining the preset light decay coefficient of LEDs, which effectively eliminates the light decay data deviation caused by the characteristics of the LEDs themselves.

[0082] Simultaneously, the lifespan is divided into stages based on the cumulative working time of the LED beads, making the analysis of light decay data more consistent with the actual usage status of the LED beads. Different fine-tuning levels are also divided according to the range of color temperature deviation values. Furthermore, considering the full lifespan characteristics of the LED beads during the break-in period, stabilization period, and aging period, corresponding preset current adjustment amplitudes are matched for each stage and each fine-tuning level. This achieves precise fine-tuning of color temperature in stages, avoiding the problems of insufficient or excessive color temperature compensation caused by a single adjustment standard. At the same time, a stepped current adjustment scheme is designed, matching the corresponding number of steps according to the fine-tuning level. The total current adjustment amplitude is divided into multiple equal-amplitude single-step adjustment amplitudes, gradually completing the current ratio optimization, making color temperature compensation more stable, and effectively improving the accuracy of color temperature adjustment.

[0083] The threshold is set for comparative analysis of results to determine whether they are good or bad. The value of the threshold is determined by a combination of large-scale model analysis of sample data and human experience. It can also be adjusted appropriately based on seasonal or common-sense influencing factors.

[0084] The size of the coefficient is a specific value obtained by quantifying each parameter to facilitate subsequent comparison. The size of the coefficient depends on the amount of sample data and the corresponding operating coefficient initially set by those skilled in the art for each set of sample data; as long as it does not affect the proportional relationship between the parameter and the quantified value.

[0085] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A panel light with integrated three-position DIP switch for adjusting color temperature, comprising a panel light holder (1), characterized in that, A panel lampshade (2) is fixedly connected to the inside of the front surface of the panel lamp holder (1), and a panel base (3) is fixedly connected to the inside of the rear surface of the panel lamp holder (1). A warm white and cool white dual-color temperature LED bead group is fixedly connected to the side of the panel base (3) near the panel lampshade. A PCB control module is fixedly connected to one side surface of the panel base (3). The PCB control module is equipped with a database, a data sensing unit, a dynamic control unit, a fine-tuning management unit, and a step control unit.

2. A panel light with an integrated three-position DIP switch for adjusting color temperature according to claim 1, characterized in that, The data sensing unit continuously collects light decay data and operating data of the warm white and cool white dual-color temperature LED bead group at any color temperature level, and at the same time obtains the reference data of the warm white and cool white dual-color temperature LED bead group, and stores all light decay data, operating data and reference data in the database of the PCB control module. The dynamic control unit is used to collect multi-dimensional working information of warm white and cool white dual-color temperature LED lamp beads, and to perform initial color temperature monitoring and discrimination analysis on the multi-dimensional working information, and output color temperature adjustment permission signal or fault warning signal. When a color temperature adjustment permission signal is issued, the fine-tuning management unit retrieves the light decay rate LS of the cold light bulb and the light decay rate NS of the warm white and cool white dual-color temperature LED bulb groups, and analyzes them in conjunction with the current target color temperature CT, and outputs the preset current adjustment range of the corresponding fine-tuning level. The stepped control unit is used to divide ΔCT, and at the same time, combined with the initial ratio of the dual current corresponding to the current target color temperature, it performs stepped adjustment operation for color temperature that is too warm or too cool, and outputs the current current ratio list or fault warning signal.

3. A panel light with an integrated three-position DIP switch for adjusting color temperature according to claim 1, characterized in that, The initial color temperature monitoring and discrimination analysis process is as follows: T1: Set the monitoring cycle and retrieve the multi-dimensional working information of the warm white and cool white dual-color temperature LED bead groups collected in real time from the database; T2: Compare each indicator with the baseline data to determine if the LED is in normal working condition: If all monitored operating indicators are within the normal baseline range, the LED is determined to be operating normally, and the PCB control module sends a color temperature adjustment permission signal. If any operating indicator exceeds the normal baseline range, the LED is determined to be operating abnormally, and the PCB control module sends a fault warning signal. At the same time, all color temperature fine-tuning operations are suspended until the fault is eliminated and the operating status returns to normal. Then, T1 is triggered again and this step is executed again.

4. A panel light with an integrated three-position DIP switch for adjusting color temperature according to claim 1, characterized in that, When a color temperature adjustment permission signal is issued, the fine-tuning management unit performs the following analysis: S1: Obtain the light decay rate LS of the cold light LED beads and the light decay rate NS of the warm white and cool white dual-color temperature LED bead groups based on the database; Retrieve the preset LED light decay coefficient k, and calibrate the light decay rate LS of the cold light LED and the light decay rate NS of the warm light LED based on the preset LED light decay coefficient k: Calibrate the light decay rate of cold light LED beads = LS × k, calibrate the light decay rate of warm light LED beads = NS × k.

5. A panel light with an integrated three-position DIP switch for adjusting color temperature according to claim 4, characterized in that, It also includes S2: Set the current target color temperature CT. In the warm white and cool white dual-color temperature LED lamp bead group, the initial current ratio of the cool light bead and the warm light bead under the current target color temperature CT is the cool light ratio DL and the warm light ratio DN, and the cool light ratio DL + warm light ratio DN = 1. The color temperature deviation value is calculated by the formula: ΔCT = current target color temperature CT × [cool light ratio DL × (1 - calibration cool light bead light decay rate) - warm light ratio DN × (1 - calibration warm light bead light decay rate)] × preset color temperature sensitivity coefficient; If ΔCT = 0, it is determined to be synchronous optical decay; if ΔCT ≠ 0, a fine-tuning command is triggered. S3: When the fine-tuning command is triggered, based on the cumulative working time LJ of the cold and warm light beads, the life stages of the cold and warm light beads are divided into the break-in period (meaning LJ < LJmin), the stable period (meaning LJ ∈ [LJmin, LJmax]), and the aging period (meaning LJ > LJmax). During the break-in period, stable period, and aging period, the fine-tuning threshold and preset current adjustment range of ΔCT are set. Based on the current life stage of the cold and warm light beads and the corresponding fine-tuning level of ΔCT in the life stage, the preset current adjustment range of the corresponding fine-tuning level is output.

6. A panel light with an integrated three-position DIP switch for adjusting color temperature according to claim 1, characterized in that, The analysis process for the step adjustment operation is as follows: Retrieve the initial dual-current ratio corresponding to the current target color temperature from the database, including the reference current LA of the cool bead, the reference current NA of the warm bead, and their total current (representing the reference current of the cool bead + the reference current of the warm bead). If ΔCT is positive, the color temperature is determined to be cool; if ΔCT is negative, the color temperature is determined to be warm. The number of steps N is automatically matched according to the fine-tuning level. If N > 0, the single-step adjustment range ΔP is obtained. ΔP = preset current adjustment range / N.

7. A panel light with an integrated three-position DIP switch for adjusting color temperature according to claim 6, characterized in that, When the color temperature is too cool or too warm, the current of the warm light bead or the current of the cool light bead is adjusted based on the step adjustment command. Specifically, when the color temperature is too cool, the current of the warm light bead is adjusted, and when the color temperature is too warm, the current of the cool light bead is adjusted. After adjusting to the warm light bead reference current NA×(1+ΔP) or the cold light bead reference current LA×(1+ΔP), the maximum operating current threshold of the cold / warm light bead is set simultaneously. If the current exceeds the maximum operating current threshold after a certain step adjustment, the adjustment is immediately stopped, the current is restored to the upper limit of the threshold, and a voice warning of "excessive light decay requires replacement of the LED bead" is issued.

8. A panel light with an integrated three-position DIP switch for adjusting color temperature according to claim 7, characterized in that, Collect the actual color temperature value of the current panel light, and then obtain the current deviation value. If the current deviation value is less than or equal to the preset allowable error, it is determined that the compensation is in place and the subsequent step adjustment is terminated. If the current deviation value is greater than the preset allowable error, the next step adjustment is executed. The adjustment-current deviation value comparison process is repeated until all step sequences are completed. If the current deviation value is still greater than the preset allowable error after all step adjustments are completed, the PCB control module will issue a fault warning signal and suspend all color temperature fine-tuning operations until it returns to normal. Then, T1 will be triggered again and this step will be executed again. If, after all step adjustments are completed, the current deviation value is less than or equal to the preset allowable error for three consecutive times, the average of the three consecutive current deviation values ​​is taken as the final color temperature value. The final color temperature value is compared with the target color temperature. If the deviation between the final color temperature value and the target color temperature is less than or equal to the preset deviation, the dual-channel current ratio fine-tuning is determined to be complete, and the current current ratio list is output.

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