Performance test method and system for driving power supply of light-emitting device

Abstract

The invention relates to the technical field of driving power supply performance testing, and discloses a performance testing method and system for a light-emitting device driving power supply. The method comprises the following steps: acquiring a first output current and a first output power of a driving power supply in a first preset acquisition time interval in an expected state and a second output current and a second output power in an actual state, and calculating an output current difference factor and an output power difference factor; determining a performance feedback difference factor of each acquisition time interval according to the output current difference factor and the output power difference factor; a performance feedback difference factor curve is constructed, a performance test difference factor of the light-emitting device driving power supply is calculated, quantitative analysis is performed on data corresponding to an expected state and an actual state, the performance of the light-emitting device driving power supply is tested more comprehensively and accurately, and the potential performance deviation or degradation trend of the driving power supply is accurately identified. And a reliable basis is provided for optimal design, fault diagnosis and service life prediction of the light-emitting device driving power supply.

Description

Technical Field

[0001] This invention relates to the field of driving power supply performance testing technology, and more specifically, to a method and system for testing the performance of a driving power supply for a light-emitting device. Background Technology

[0002] With the widespread application of light-emitting devices in lighting, displays, and other fields, the performance stability and reliability of their driving power supplies have become key factors affecting the overall performance of these devices. The driving power supply determines the operating efficiency, lifespan, and light output quality of the light-emitting device. Therefore, accurate performance testing and evaluation of the driving power supply for light-emitting devices is of great significance.

[0003] Traditional driver power supply performance testing methods are typically based on static or single-point-in-time test data. However, these methods struggle to comprehensively reflect the performance changes of the driver power supply under dynamic operating conditions, especially its stability and consistency across different time intervals. Furthermore, existing technologies lack quantitative analysis of the differences between expected and actual state data, resulting in test results that cannot accurately identify potential performance deviations or degradation trends in the driver power supply. Summary of the Invention

[0004] This invention provides a performance testing method and system for a power supply driving a light-emitting device. The invention performs quantitative analysis on the data corresponding to the expected state and the actual state, and tests the performance of the power supply driving the light-emitting device more comprehensively and accurately. It can accurately identify potential performance deviations or degradation trends of the power supply driving power, and provide a reliable basis for the optimized design, fault diagnosis and life prediction of the power supply driving the light-emitting device.

[0005] To achieve the above objectives, the present invention provides a performance testing method for a power supply driving a light-emitting device, comprising: Multiple acquisition time intervals are preset to acquire the first output current and first output power of the light-emitting device driving power supply in the first preset acquisition time interval under the expected state, as well as the second output current and second output power under the actual state. Each acquisition time interval includes multiple acquisition timestamps. Based on the first output current, the first output power, the second output current, and the second output power, calculate the output current difference factor and the output power difference factor of the drive power supply; The performance feedback difference factor for each acquisition time interval is determined based on the output current difference factor and the output power difference factor for each acquisition time interval. A performance feedback difference factor curve is constructed based on the performance feedback difference factor corresponding to each acquisition time interval, and the performance feedback difference factor curve is analyzed to calculate the performance test difference factor of the light-emitting device driving power supply.

[0006] Further, when calculating the output current difference factor and output power difference factor of the drive power supply based on the first output current, the first output power, the second output current, and the second output power, the calculation includes: The first output current coefficient is determined based on the first output current, and the first output current difference coefficient is determined based on the first output current coefficient and the first output current. The second output current coefficient is determined based on the second output current, and the second output current difference coefficient is determined based on the second output current coefficient and the second output current. A first output power coefficient is determined based on the first output power, and a first output power difference coefficient is determined based on the first output power coefficient and the first output power. The second output power coefficient is determined based on the second output power, and the second output power difference coefficient is determined based on the second output power coefficient and the second output power. Calculate the absolute value of the difference between the first output current difference coefficient and the second output current difference coefficient, and use it as the output current difference factor of the drive power supply. Calculate the absolute value of the difference between the first output power difference coefficient and the second output power difference coefficient, and use it as the output power difference factor of the drive power supply.

[0007] Further, when determining the first output current coefficient based on the first output current, and when determining the first output current difference coefficient based on the first output current coefficient and the first output current, the process includes: A first output current coefficient is determined based on the first output current, wherein the first output current coefficient is the average value of all first output currents within a first preset acquisition time interval; Determine the absolute value of the output current difference between each first output current and the first output current coefficient; Determine the standard deviation of the output current based on the absolute values ​​of all output current differences, and use it as the first output current difference coefficient.

[0008] Further, when determining the first output power coefficient based on the first output power, and determining the first output power difference coefficient based on the first output power coefficient and the first output power, the process includes: A first output power coefficient is determined based on the first output power, wherein the first output power coefficient is the average value of all first output powers within a first preset acquisition time interval; Determine the absolute value of the output power difference between each first output power and the first output power coefficient; Determine the standard deviation of the output power for the absolute values ​​of all output power differences, and use it as the first output power difference coefficient.

[0009] Furthermore, when determining the performance feedback difference factor for each acquisition time interval based on the output current difference factor and output power difference factor for each acquisition time interval, the following is included: The output current difference factor and the output power difference factor are weighted and summed to obtain the performance feedback difference factor corresponding to each acquisition time interval.

[0010] Furthermore, when analyzing the performance feedback difference factor curve and calculating the performance test difference factor of the light-emitting device driving power supply, the following steps are included: The performance feedback difference factor curves were analyzed, and multiple groups of the same performance feedback change degree were obtained based on the analysis results. The performance test difference factor of the light-emitting device driving power supply is calculated based on all groups of performance feedback variation.

[0011] Furthermore, when analyzing the performance feedback difference factor curve and obtaining multiple groups of the same performance feedback change degree based on the analysis results, the analysis includes: Obtain the extreme values ​​of all performance feedback difference factors on the performance feedback difference factor curve; Determine the absolute value of the difference between the extreme values ​​of any two adjacent extreme values ​​of a factor; Determine the last collection timestamp corresponding to each collection time interval, and bind the last collection timestamp to the corresponding performance feedback difference factor one by one; Determine the last collection timestamp corresponding to each factor extreme value, and determine the collection timestamp interval between the last collection timestamps corresponding to every two adjacent factor extreme values. The ratio of the absolute value of the extreme value difference of the factor to the collection timestamp interval is used as the degree of change in performance feedback. By combining groups of the same degree of performance feedback change, multiple groups of the same degree of performance feedback change can be obtained.

[0012] Furthermore, when calculating the performance test difference factor of the light-emitting device driving power supply based on all groups of performance feedback variation, the following is included: The number of the first performance feedback change group in the statistical performance feedback change group; Extract one performance feedback change level from each of the groups of performance feedback change levels, and calculate the first performance feedback change level and value; A preset performance feedback change level is set, all performance feedback change level groups that are less than the preset performance feedback change level are eliminated, and the number of second performance feedback change level groups of the remaining performance feedback change level groups is counted. Extract one degree of performance feedback change from each of the remaining groups of performance feedback change degrees, and calculate the second degree of performance feedback change and its value; The performance test difference factor of the light-emitting device driving power supply is calculated based on the number of the first performance feedback change group, the number of the second performance feedback change group, the sum of the first performance feedback change degree and the sum of the second performance feedback change degree.

[0013] Further, when calculating the performance test difference factor of the light-emitting device driving power supply based on the number of the first performance feedback change degree groups, the number of the second performance feedback change degree groups, the sum of the first performance feedback change degree and the sum of the second performance feedback change degree, the calculation includes: The performance test difference factor of the driving power supply for the light-emitting device is calculated according to the following formula: ; Where c is the performance test difference factor of the light-emitting device driving power supply, b1 is the number of the first performance feedback change degree group, b2 is the number of the second performance feedback change degree group, n1 is the sum of the first performance feedback change degree and n2 is the sum of the second performance feedback change degree and value.

[0014] To achieve the above objectives, the present invention also provides a performance testing system for a light-emitting device driving power supply, comprising: The data acquisition module is used to pre-set multiple acquisition time intervals to acquire the first output current and first output power of the light-emitting device driving power supply in the first preset acquisition time interval under the expected state, and the second output current and second output power under the actual state. Each acquisition time interval includes multiple acquisition timestamps. The factor calculation module is used to calculate the output current difference factor and output power difference factor of the drive power supply based on the first output current, the first output power, the second output current and the second output power. The factor determination module is used to determine the performance feedback difference factor for each acquisition time interval based on the output current difference factor and the output power difference factor for each acquisition time interval. The performance testing module is used to construct a performance feedback difference factor curve based on the performance feedback difference factor corresponding to each acquisition time interval, analyze the performance feedback difference factor curve, and calculate the performance test difference factor of the light-emitting device driving power supply.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention collects the first output current and first output power of the driving power supply under expected conditions within a first preset collection time interval, as well as the second output current and second output power under actual conditions, and calculates the output current difference factor and output power difference factor. Based on the output current difference factor and output power difference factor, it determines the performance feedback difference factor for each collection time interval; constructs a performance feedback difference factor curve, calculates the performance test difference factor of the light-emitting device driving power supply, and performs quantitative analysis on the data corresponding to the expected and actual conditions. This allows for a more comprehensive and accurate test of the performance of the light-emitting device driving power supply, accurately identifies potential performance deviations or degradation trends of the driving power supply, and provides a reliable basis for the optimized design, fault diagnosis, and lifespan prediction of the light-emitting device driving power supply. Attached Figure Description

[0016] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A schematic flowchart of a performance testing method for a light-emitting device driving power supply according to an embodiment of the present invention is shown; Figure 2 A schematic diagram of the structure of a performance testing system for a light-emitting device driving power supply according to an embodiment of the present invention is shown. Detailed Implementation

[0017] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0018] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0019] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0021] The following is a description of preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0022] like Figure 1 As shown, an embodiment of the present invention discloses a performance testing method for a light-emitting device driving power supply, comprising: S110: Multiple acquisition time intervals are preset to acquire the first output current and first output power of the light-emitting device driving power supply in the first preset acquisition time interval under the expected state, and the second output current and second output power under the actual state, wherein each acquisition time interval includes multiple acquisition timestamps. In this embodiment, the collection time interval is preset and is a time period, such as [second 1, second 60], (second 60, second 120], etc., which are not shown one by one here. The number of collection time intervals is preferably 20.

[0023] In this embodiment, the expected state refers to the working state under the theoretical or design goal, assuming that all conditions are perfect (such as no component error, no temperature fluctuation, absolutely stable input voltage, etc.), which is an ideal state. The actual state refers to the state in the real working environment, which is affected by factors such as component aging, temperature change, input fluctuation, load change, etc.

[0024] In this embodiment, multiple acquisition timestamps are set within each acquisition time interval. An acquisition timestamp refers to a specific acquisition time point. For example, as mentioned above, if the acquisition time interval is [second 1, second 60], then the corresponding acquisition timestamps are set to second 1, second 5, second 10, second 15, second 20, second 25, second 30, second 35, second 40, second 45, second 50, second 55, and second 60. It should be noted that each acquisition timestamp corresponds to a first output current, a first output power, a second output current, and a second output power.

[0025] S120: Based on the first output current, the first output power, the second output current, and the second output power, calculate the output current difference factor and the output power difference factor of the drive power supply; In some embodiments of this application, when calculating the output current difference factor and output power difference factor of the drive power supply based on the first output current, the first output power, the second output current, and the second output power, the calculation includes: The first output current coefficient is determined based on the first output current, and the first output current difference coefficient is determined based on the first output current coefficient and the first output current. The second output current coefficient is determined based on the second output current, and the second output current difference coefficient is determined based on the second output current coefficient and the second output current. A first output power coefficient is determined based on the first output power, and a first output power difference coefficient is determined based on the first output power coefficient and the first output power. The second output power coefficient is determined based on the second output power, and the second output power difference coefficient is determined based on the second output power coefficient and the second output power. Calculate the absolute value of the difference between the first output current difference coefficient and the second output current difference coefficient, and use it as the output current difference factor of the drive power supply. Calculate the absolute value of the difference between the first output power difference coefficient and the second output power difference coefficient, and use it as the output power difference factor of the drive power supply.

[0026] The beneficial effects of the above technical solution are as follows: This invention calculates the absolute value of the difference between the first output current difference coefficient and the second output current difference coefficient as the output current difference factor of the driving power supply. The output current difference factor can characterize the difference between the output current under the expected state and the output current under the actual state. It also calculates the absolute value of the difference between the first output power difference coefficient and the second output power difference coefficient as the output power difference factor of the driving power supply. The output power difference factor can characterize the difference between the output current under the expected state and the output current under the actual state. This provides reliable data support for the performance testing of the driving power supply of the light-emitting device, and ensures the comprehensiveness and accuracy of the performance testing of the driving power supply of the light-emitting device.

[0027] In some embodiments of this application, determining the first output current coefficient based on the first output current and determining the first output current difference coefficient based on the first output current coefficient and the first output current includes: A first output current coefficient is determined based on the first output current, wherein the first output current coefficient is the average value of all first output currents within a first preset acquisition time interval; Determine the absolute value of the output current difference between each first output current and the first output current coefficient; Determine the standard deviation of the output current based on the absolute values ​​of all output current differences, and use it as the first output current difference coefficient.

[0028] In this embodiment, the absolute value of the output current difference refers to the absolute value of the difference between each first output current and the first output current coefficient.

[0029] In this embodiment, the standard deviation of the output current refers to the standard deviation of the absolute values ​​of all output current differences.

[0030] The beneficial effects of the above technical solution are: the present invention can obtain the first output current difference coefficient, which can characterize the difference in the change of all output currents under the expected state, laying the foundation for the performance testing of the driving power supply of light-emitting devices.

[0031] In some embodiments of this application, it should be noted that the second output current coefficient is determined based on the second output current, and the second output current difference coefficient is determined based on the second output current coefficient and the second output current. The specific determination process of the second output current coefficient and the second output current difference coefficient is consistent with that of the first output current difference coefficient. To avoid redundancy, it will not be repeated here; adaptive adjustment calculations are sufficient. The second output current difference coefficient can characterize the variation differences of all output currents under actual conditions, and then be compared with the variation differences of all output currents under expected conditions. This ensures the performance testing accuracy of the power supply for the light-emitting device.

[0032] In some embodiments of this application, determining a first output power coefficient based on the first output power and determining a first output power difference coefficient based on the first output power and the first output power includes: A first output power coefficient is determined based on the first output power, wherein the first output power coefficient is the average value of all first output powers within a first preset acquisition time interval; Determine the absolute value of the output power difference between each first output power and the first output power coefficient; Determine the standard deviation of the output power for the absolute values ​​of all output power differences, and use it as the first output power difference coefficient.

[0033] In this embodiment, the absolute value of the output power difference refers to the absolute value of the difference between each first output power and the first output power coefficient.

[0034] In this embodiment, the standard deviation of output power refers to the standard deviation of the absolute values ​​of all output power differences.

[0035] The beneficial effects of the above technical solution are: the present invention can obtain a first output power difference coefficient, which can characterize the difference in the change of all output power under the expected state, laying the foundation for the performance testing of the driving power supply of light-emitting devices.

[0036] In some embodiments of this application, it should be noted that a second output power coefficient is determined based on the second output power, and a second output power difference coefficient is determined based on the second output power coefficient and the second output power. The specific determination process of the second output power coefficient and the second output power difference coefficient is consistent with that of the first output power difference coefficient. To avoid redundancy, it will not be repeated here; adaptive adjustment calculations are sufficient. The second output power difference coefficient can characterize the variation difference of all output power under actual conditions, and then be compared with the variation difference of all output power under expected conditions. This ensures the performance testing accuracy of the power supply for the light-emitting device.

[0037] S130: Determine the performance feedback difference factor for each acquisition time interval based on the output current difference factor and output power difference factor for each acquisition time interval; In some embodiments of this application, when determining the performance feedback difference factor corresponding to each acquisition time interval based on the output current difference factor and the output power difference factor corresponding to each acquisition time interval, the following steps are included: The output current difference factor and the output power difference factor are weighted and summed to obtain the performance feedback difference factor corresponding to each acquisition time interval.

[0038] In this embodiment, the output current difference factor and the output power difference factor are weighted. The specific weighting methods include subjective weighting and objective weighting. The specific weighting method can be selected according to the actual needs. Here, the weight of the output current difference factor is configured as 0.65 and the weight of the output power difference factor is configured as 0.35.

[0039] The beneficial effects of the above technical solution are as follows: The present invention performs a weighted summation of the output current difference factor and the output power difference factor to obtain the performance feedback difference factor corresponding to each acquisition time interval. The performance feedback difference factor can provide feedback on the comprehensive performance of the light-emitting device driving power supply, avoiding overly simplistic performance testing. At the same time, it incorporates time variations to further ensure the performance testing accuracy of the light-emitting device driving power supply.

[0040] S140: Construct a performance feedback difference factor curve based on the performance feedback difference factor corresponding to each acquisition time interval, analyze the performance feedback difference factor curve, and calculate the performance test difference factor of the light-emitting device driving power supply.

[0041] In some embodiments of this application, the analysis of the performance feedback difference factor curve and the calculation of the performance test difference factor of the light-emitting device driving power supply include: The performance feedback difference factor curves were analyzed, and multiple groups of the same performance feedback change degree were obtained based on the analysis results. The performance test difference factor of the light-emitting device driving power supply is calculated based on all groups of performance feedback variation.

[0042] In this embodiment, according to the above scheme, the performance feedback difference factor corresponding to each collection time interval can be obtained, that is, each collection time interval corresponds to a performance feedback difference factor.

[0043] In some embodiments of this application, when analyzing the performance feedback difference factor curve and obtaining multiple identical groups of performance feedback change degrees based on the analysis results, the process includes: Obtain the extreme values ​​of all performance feedback difference factors on the performance feedback difference factor curve; Determine the absolute value of the difference between any two adjacent factor extrema; Determine the last collection timestamp corresponding to each collection time interval, and bind the last collection timestamp to the corresponding performance feedback difference factor one by one; Determine the last collection timestamp corresponding to each factor extreme value, and determine the collection timestamp interval between the last collection timestamps corresponding to every two adjacent factor extreme values. The ratio of the absolute value of the extreme value difference of the factor to the collection timestamp interval is used as the degree of change in performance feedback. By combining groups of the same degree of performance feedback change, multiple groups of the same degree of performance feedback change can be obtained.

[0044] In this embodiment, extreme values ​​refer to the peak or valley values ​​reached within a local range in the sequence.

[0045] In this embodiment, as mentioned above, [second 1, second 60], (second 60, second 120], the end timestamps are second 60 and second 120 respectively, and other examples will not be shown.

[0046] In this embodiment, each collection time interval corresponds to a performance feedback difference factor and a corresponding end collection timestamp.

[0047] In this embodiment, the timestamp interval between the 60th second and the 120th second mentioned above is 60 seconds, and other examples will not be shown.

[0048] The beneficial effects of the above technical solution are: the present invention combines the same degree of performance feedback change to obtain multiple groups of the same degree of performance feedback change, thereby achieving accurate division of the degree of performance feedback change, providing reliable data support for determining the performance test difference factor of the light-emitting device driving power supply, and thus ensuring the performance test accuracy of the light-emitting device driving power supply.

[0049] In some embodiments of this application, when calculating the performance test difference factor of the light-emitting device driving power supply based on all groups of performance feedback change levels, the following is included: The number of the first performance feedback change group in the statistical performance feedback change group; Extract one performance feedback change level from each of the groups of performance feedback change levels, and calculate the first performance feedback change level and value; A preset performance feedback change level is set, all performance feedback change level groups that are less than the preset performance feedback change level are eliminated, and the number of second performance feedback change level groups of the remaining performance feedback change level groups is counted. Extract one degree of performance feedback change from each of the remaining groups of performance feedback change degrees, and calculate the second degree of performance feedback change and its value; The performance test difference factor of the light-emitting device driving power supply is calculated based on the number of the first performance feedback change group, the number of the second performance feedback change group, the sum of the first performance feedback change degree and the sum of the second performance feedback change degree.

[0050] In this embodiment, the preset performance feedback change level is preferably 2, but it can be adjusted adaptively according to actual needs.

[0051] The beneficial effects of the above technical solution are as follows: This invention calculates the performance test difference factor of the light-emitting device driving power supply based on the number of the first performance feedback change degree group, the number of the second performance feedback change degree group, the sum of the first performance feedback change degree and the sum of the second performance feedback change degree, and ensures the calculation accuracy of the performance test difference factor. Through the performance test difference factor, the performance test status of the light-emitting device driving power supply can be comprehensively fed back, taking into account the changes of current and power over time, ensuring the accuracy and efficiency of the performance analysis of the light-emitting device driving power supply, accurately identifying potential performance deviations or degradation trends of the driving power supply, and providing a reliable basis for the optimized design, fault diagnosis and life prediction of the light-emitting device driving power supply.

[0052] In some embodiments of this application, when calculating the performance test difference factor of the light-emitting device driving power supply based on the number of the first performance feedback change degree groups, the number of the second performance feedback change degree groups, the sum of the first performance feedback change degree and the sum of the second performance feedback change degree, the following steps are included: The performance test difference factor of the driving power supply for the light-emitting device is calculated according to the following formula: ; Where c is the performance test difference factor of the light-emitting device driving power supply, b1 is the number of the first performance feedback change degree group, b2 is the number of the second performance feedback change degree group, n1 is the sum of the first performance feedback change degree and n2 is the sum of the second performance feedback change degree and value.

[0053] To further illustrate the technical concept of this invention, the technical solution of this invention will now be described in conjunction with specific application scenarios.

[0054] Correspondingly, such as Figure 2 As shown, this application also provides a performance testing system for a light-emitting device driving power supply, comprising: The data acquisition module is used to pre-set multiple acquisition time intervals to acquire the first output current and first output power of the light-emitting device driving power supply in the first preset acquisition time interval under the expected state, and the second output current and second output power under the actual state. Each acquisition time interval includes multiple acquisition timestamps. The factor calculation module is used to calculate the output current difference factor and output power difference factor of the drive power supply based on the first output current, the first output power, the second output current and the second output power. The factor determination module is used to determine the performance feedback difference factor for each acquisition time interval based on the output current difference factor and the output power difference factor for each acquisition time interval. The performance testing module is used to construct a performance feedback difference factor curve based on the performance feedback difference factor corresponding to each acquisition time interval, analyze the performance feedback difference factor curve, and calculate the performance test difference factor of the light-emitting device driving power supply.

[0055] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0056] Although the invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The fact that not all of these combinations are described in this specification is merely for the sake of brevity and resource conservation.

[0057] It will be understood by those skilled in the art that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A performance testing method for a power supply driving a light-emitting device, characterized in that, include: Multiple acquisition time intervals are preset to acquire the first output current and first output power of the light-emitting device driving power supply in the first preset acquisition time interval under the expected state, as well as the second output current and second output power under the actual state. Each acquisition time interval includes multiple acquisition timestamps. Based on the first output current, the first output power, the second output current, and the second output power, calculate the output current difference factor and the output power difference factor of the drive power supply; The performance feedback difference factor for each acquisition time interval is determined based on the output current difference factor and the output power difference factor for each acquisition time interval. A performance feedback difference factor curve is constructed based on the performance feedback difference factor corresponding to each acquisition time interval, and the performance feedback difference factor curve is analyzed to calculate the performance test difference factor of the light-emitting device driving power supply.

2. The performance testing method for the driving power supply of the light-emitting device according to claim 1, characterized in that, When calculating the output current difference factor and output power difference factor of the drive power supply based on the first output current, the first output power, the second output current, and the second output power, the calculation includes: The first output current coefficient is determined based on the first output current, and the first output current difference coefficient is determined based on the first output current coefficient and the first output current. The second output current coefficient is determined based on the second output current, and the second output current difference coefficient is determined based on the second output current coefficient and the second output current. A first output power coefficient is determined based on the first output power, and a first output power difference coefficient is determined based on the first output power coefficient and the first output power. The second output power coefficient is determined based on the second output power, and the second output power difference coefficient is determined based on the second output power coefficient and the second output power. Calculate the absolute value of the difference between the first output current difference coefficient and the second output current difference coefficient, and use it as the output current difference factor of the drive power supply. Calculate the absolute value of the difference between the first output power difference coefficient and the second output power difference coefficient, and use it as the output power difference factor of the drive power supply.

3. The performance testing method for the driving power supply of the light-emitting device according to claim 2, characterized in that, When determining the first output current coefficient based on the first output current, and when determining the first output current difference coefficient based on the first output current coefficient and the first output current, the process includes: A first output current coefficient is determined based on the first output current, wherein the first output current coefficient is the average value of all first output currents within a first preset acquisition time interval; Determine the absolute value of the output current difference between each first output current and the first output current coefficient; Determine the standard deviation of the output current based on the absolute values ​​of all output current differences, and use it as the first output current difference coefficient.

4. The performance testing method for the driving power supply of the light-emitting device according to claim 2, characterized in that, When determining the first output power coefficient based on the first output power, and when determining the first output power difference coefficient based on the first output power coefficient and the first output power, the process includes: A first output power coefficient is determined based on the first output power, wherein the first output power coefficient is the average value of all first output powers within a first preset acquisition time interval; Determine the absolute value of the output power difference between each first output power and the first output power coefficient; Determine the standard deviation of the output power for the absolute values ​​of all output power differences, and use it as the first output power difference coefficient.

5. The performance testing method for the driving power supply of the light-emitting device according to claim 1, characterized in that, When determining the performance feedback difference factor for each acquisition time interval based on the output current difference factor and output power difference factor for each acquisition time interval, the following is included: The output current difference factor and the output power difference factor are weighted and summed to obtain the performance feedback difference factor corresponding to each acquisition time interval.

6. The performance testing method for the driving power supply of the light-emitting device according to claim 1, characterized in that, When analyzing the performance feedback difference factor curve and calculating the performance test difference factor of the light-emitting device driving power supply, the following steps are included: The performance feedback difference factor curves were analyzed, and multiple groups of the same performance feedback change degree were obtained based on the analysis results. The performance test difference factor of the light-emitting device driving power supply is calculated based on all groups of performance feedback variation.

7. The performance testing method for the driving power supply of the light-emitting device according to claim 6, characterized in that, When analyzing the performance feedback difference factor curve and obtaining multiple groups of the same performance feedback change degree based on the analysis results, the analysis includes: Obtain the extreme values ​​of all performance feedback difference factors on the performance feedback difference factor curve; Determine the absolute value of the difference between any two adjacent factor extrema; Determine the last collection timestamp corresponding to each collection time interval, and bind the last collection timestamp to the corresponding performance feedback difference factor one by one; Determine the last collection timestamp corresponding to each factor extreme value, and determine the collection timestamp interval between the last collection timestamps corresponding to every two adjacent factor extreme values. The ratio of the absolute value of the extreme value difference of the factor to the collection timestamp interval is used as the degree of change in performance feedback. By combining groups of the same degree of performance feedback change, multiple groups of the same degree of performance feedback change can be obtained.

8. The performance testing method for the driving power supply of the light-emitting device according to claim 6, characterized in that, When calculating the performance test difference factor of the light-emitting device driving power supply based on all groups of performance feedback variation, the following is included: The number of the first performance feedback change group in the statistical performance feedback change group; Extract one performance feedback change level from each of the groups of performance feedback change levels, and calculate the first performance feedback change level and value; A preset performance feedback change level is set, all performance feedback change level groups that are less than the preset performance feedback change level are eliminated, and the number of second performance feedback change level groups of the remaining performance feedback change level groups is counted. Extract one degree of performance feedback change from each of the remaining groups of performance feedback change degrees, and calculate the second degree of performance feedback change and its value; The performance test difference factor of the light-emitting device driving power supply is calculated based on the number of the first performance feedback change group, the number of the second performance feedback change group, the sum of the first performance feedback change degree and the sum of the second performance feedback change degree.

9. The performance testing method for the driving power supply of the light-emitting device according to claim 1, characterized in that, When calculating the performance test difference factor of the light-emitting device driving power supply based on the number of the first performance feedback change group, the number of the second performance feedback change group, the sum of the first performance feedback change degree and the sum of the second performance feedback change degree and value, the calculation includes: The performance test difference factor of the driving power supply for the light-emitting device is calculated according to the following formula: ； Where c is the performance test difference factor of the light-emitting device driving power supply, b1 is the number of the first performance feedback change degree group, b2 is the number of the second performance feedback change degree group, n1 is the sum of the first performance feedback change degree and n2 is the sum of the second performance feedback change degree and value.

10. A performance testing system for a light-emitting device driving power supply, applied to the performance testing method for a light-emitting device driving power supply as described in any one of claims 1-9, characterized in that, include: The data acquisition module is used to pre-set multiple acquisition time intervals to acquire the first output current and first output power of the light-emitting device driving power supply in the first preset acquisition time interval under the expected state, and the second output current and second output power under the actual state. Each acquisition time interval includes multiple acquisition timestamps. The factor calculation module is used to calculate the output current difference factor and output power difference factor of the drive power supply based on the first output current, the first output power, the second output current and the second output power. The factor determination module is used to determine the performance feedback difference factor for each acquisition time interval based on the output current difference factor and the output power difference factor for each acquisition time interval. The performance testing module is used to construct a performance feedback difference factor curve based on the performance feedback difference factor corresponding to each acquisition time interval, analyze the performance feedback difference factor curve, and calculate the performance test difference factor of the light-emitting device driving power supply.

Images