Light source calibration method, device and system

Abstract

The invention discloses a light source calibration method, device and system, and belongs to the technical field of light source control, and the method comprises the steps: collecting the actual optical data of a target collection point of a light source, and combining the historical total optical data of the light source for fitting to obtain the prediction optical data of a plurality of other collection points of the light source; then, comparing the actual optical data and the plurality of pieces of prediction optical data with standard full-amount optical data of the plurality of preset acquisition points to obtain a first data deviation result; and finally, performing parameter calibration on the light source according to the first data deviation result so as to calibrate the light source. Therefore, in the light source calibration process of the embodiment, the light source calibration equipment only needs to acquire a small amount of optical data of the target acquisition points, so that the acquisition time and the preprocessing time of the optical data can be reduced, and the light source calibration efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of light source control technology, specifically to a light source calibration method, device, and system. Background Technology

[0002] LED (light-emitting diode) lamps will experience brightness decay and color shift during long-term use, and the degree of decay varies greatly among different lamps. Therefore, when multiple lamps are used in arrays or combined light demonstrations, problems such as inconsistent brightness and obvious color differences are likely to occur.

[0003] In related technologies, during actual after-sales testing, optical data from multiple sampling points of the luminaire can be collected to calibrate the light source and avoid problems such as inconsistent brightness and significant color differences. However, the large amount of optical data from multiple sampling points, coupled with the long acquisition and preprocessing times, leads to low efficiency in light source calibration. Summary of the Invention

[0004] This application provides a light source calibration method, device, and system to at least partially solve the above-mentioned technical problems.

[0005] To achieve the above objectives, in a first aspect, a light source calibration method is provided, comprising the following steps: Acquire historical full optical data of the light source, as well as the actual optical data of the target acquisition point of the light source. The historical full optical data includes historical optical data of multiple preset acquisition points of the light source. Based on actual optical data and historical full-volume optical data, data fitting is performed to obtain predicted optical data for other acquisition points besides the target acquisition point among multiple preset acquisition points; The predicted optical data and actual optical data are compared with the standard full optical data to obtain the first data deviation result. The standard full optical data includes standard optical data from multiple preset collection points. The light source parameters are calibrated based on the first data deviation result.

[0006] In some embodiments, after calibrating the light source parameters based on the first data deviation result, the light source calibration method further includes: Acquire the actual full optical data from multiple preset acquisition points under the control of calibrated light source parameters; The actual full optical data is compared with the standard full optical data to obtain the second data deviation result; Based on the second data deviation result, determine whether the calibration of the light source is effective; When the calibration is determined to be invalid, the actual full optical data of multiple preset acquisition points under the control of the light source parameters before calibration is obtained. The actual full optical data is compared with the standard full optical data to obtain the third data deviation result; The light source parameters were recalibrated based on the third data deviation result.

[0007] In some embodiments, the target acquisition point includes a first target acquisition point and a second target acquisition point, and multiple other acquisition points are located in different partitions. The historical full optical data includes the first historical optical data of the target acquisition point and the second historical optical data of multiple other acquisition points. Based on actual optical data and historical full-volume optical data, data fitting is performed to obtain predicted optical data for other acquisition points besides the target acquisition point among multiple preset acquisition points, including: For each other acquisition point, calculate the stability coefficient of the corresponding second historical optical data relative to the first historical optical data; For each partition, the first fitting weight corresponding to the first target acquisition point and the second fitting weight corresponding to the second target acquisition point are determined based on the spatial distance between the third target acquisition point and the first target acquisition point and the second target acquisition point within the partition. For each partition, construct the corresponding fitting model based on the first fitting weight and the second fitting weight; For each partition, multiple predicted optical data are calculated using the corresponding fitting model based on the actual optical data and the corresponding stability coefficient.

[0008] In some embodiments, the standard full-volume optical data includes first standard optical data of the target acquisition point and second standard optical data of a plurality of other acquisition points; The predicted optical data and actual optical data are compared with the standard full-data optical data respectively to obtain the first data deviation result, including: Calculate the first deviation between the actual optical data and the first standard optical data, and calculate the second deviation between each predicted optical data and the corresponding second standard optical data; The first deviation is compared with the first preset threshold, and each second deviation is compared with the second preset threshold to obtain the first data deviation result; wherein the first preset threshold is less than the second preset threshold.

[0009] In some embodiments, parameter calibration of the light source is performed based on the first data deviation result, including: When the first data deviation result is that the first deviation is greater than the first preset threshold, and / or a preset number of second deviations are greater than the second preset threshold, the parameter adjustment step size is determined from the preset adjustment step size table based on the first deviation and the multiple second deviations. The light source parameters are calibrated by adjusting the step size according to the parameters.

[0010] In some embodiments, it also includes: When the first data deviation result is less than or equal to the first preset threshold, and multiple second deviations are all less than or equal to the second preset threshold, the light source parameters corresponding to the standard full optical data are sent to the light source.

[0011] In some embodiments, after calibrating the light source parameters according to the parameter adjustment step size, the light source calibration method further includes: Package the calibrated light source parameters into a calibration file with a preset format; The calibration file is sent to the light source.

[0012] In some embodiments, actual optical data includes actual luminance data and actual color temperature data, predicted optical data includes predicted luminance data and predicted color temperature data, and standard full optical data includes standard luminance data and standard color temperature data. The predicted optical data and actual optical data are compared with the standard full-data optical data respectively to obtain the first data deviation result, including: The actual brightness data and multiple predicted brightness data are compared with the standard brightness data to obtain the brightness data deviation; The actual color temperature data and multiple predicted color temperature data are compared with the standard color temperature data to obtain the color temperature data deviation; By comparing the brightness data deviation with the preset brightness deviation range, and by comparing the color temperature data deviation with the preset color temperature deviation range, the first data deviation result is obtained.

[0013] In a second aspect, a light source calibration device is also provided, including a memory and a processor, wherein a computer program is stored in the memory, and the computer program, when executed by the processor, implements the method as described above.

[0014] Thirdly, a light source calibration system is also provided, including: A spectrometer is used to collect optical data from a light source; The light source calibration equipment described above is connected to both the light source and the spectrometer.

[0015] In summary, in this application, firstly, actual optical data of the target acquisition point of the light source is collected, and predicted optical data of multiple other acquisition points of the light source is obtained by fitting the historical full optical data of the light source; then, the actual optical data and multiple predicted optical data are compared with the standard full optical data of multiple preset acquisition points to obtain a first data deviation result; finally, the light source is calibrated according to the first data deviation result to achieve the calibration of the light source; thus, in the light source calibration process of this embodiment, the light source calibration device only needs to collect a small amount of optical data of the target acquisition point, which can reduce the acquisition time and preprocessing time of optical data, thereby improving the efficiency of light source calibration.

[0016] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the architecture of a light source calibration system provided in an exemplary embodiment of this application; Figure 2 This is a schematic flowchart of a light source calibration method provided in an exemplary embodiment of this application; Figure 3 This is another schematic flowchart of the light source calibration method provided in an exemplary embodiment of this application; Figure 4 This is a schematic diagram of the structure of a light source calibration device provided in an exemplary embodiment of this application.

[0019] The realization of the objectives, functional features and advantages of the embodiments of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] In the description of this application, 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0022] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0023] Additionally, in this application, the term "exemplary" is used to mean "used as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to implement and use this application. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that this application can be implemented without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of this application with unnecessary detail. Therefore, this application is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0024] First, the light source calibration system involved in the light source calibration method of this application will be described.

[0025] This embodiment provides a light source calibration system, such as Figure 1 As shown, it may include a spectrometer and a light source calibration device. The spectrometer is used to collect optical data from the light source; the light source calibration device is connected to both the light source and the spectrometer, and is used to implement the light source calibration method of any of the embodiments described below.

[0026] In this embodiment, the light source may include an LED (Light Emitting Diode) luminaire. The spectrometer can collect optical data from multiple preset collection points on the LED luminaire, where each preset collection point is a preset point on the emitting surface of the LED luminaire. When calibration of the LED luminaire is required, the user can set the spectrometer at the corresponding position on the LED luminaire and connect the light source calibration device to both the LED luminaire and the spectrometer. This allows the light source calibration device to control the LED luminaire to operate in different optical states using different preset light source parameters, and then acquire the optical data of the luminaire from the spectrometer, thus implementing the optical calibration method of any of the embodiments described below.

[0027] Based on this, this embodiment provides a light source calibration method, such as... Figure 2 As shown, it includes the following steps: Step S201: Obtain the historical full optical data of the light source and the actual optical data of the target acquisition point of the light source. The historical full optical data includes historical optical data from multiple preset acquisition points of the light source. In this embodiment, the entity executing the light source calibration method is a light source calibration device. The optical state of the LED lamp can include at least one standard optical state. When the LED lamp leaves the factory, it can operate according to preset light source parameters to achieve the corresponding standard optical state; the preset light source parameters can include preset brightness parameters and preset color temperature parameters, and one set of preset light source parameters corresponds to one standard optical state. However, as the LED lamp is used, it gradually ages, and when operating according to the preset light source parameters, the optical state of the LED lamp may fail to reach the standard optical state. In this case, the preset light source parameters in the LED lamp can be adjusted to allow the LED lamp to operate according to the adjusted optical parameters to achieve the standard optical state. It is understandable that during actual light source calibration, when the optical state of an LED luminaire includes multiple standard optical states, the light source calibration equipment can adjust the preset light source parameters for each standard optical state according to the light source calibration method provided in this embodiment. This ensures that the LED luminaire continues to operate under the standard optical state, avoiding problems such as inconsistent brightness and significant color difference, and improving the user experience of the LED luminaire. Furthermore, for different LED luminaires, multiple preset data acquisition points for the light source can be pre-determined based on the luminaire type, size, and operating environment. Then, a key acquisition point among these preset points is used as the target acquisition point. For example, the key acquisition point can be at least one of the LED luminaire's zero-normal point and half-power angle point. The zero-normal point can be the direction in which the principal optical axis of the light source coincides with the normal to the illuminated surface, and the half-power angle point can be the angle point corresponding to when the light intensity of the light source drops to 50% of the light intensity at the zero-normal point.

[0028] Therefore, in its specific implementation, the light source calibration device first controls the LED luminaire to operate using preset light source parameters, and then acquires the actual optical data of the target acquisition point from the spectrometer. The actual optical data refers to the optical data of the target acquisition point of the LED luminaire collected by the spectrometer when the light source calibration device controls the LED luminaire to operate. This actual optical data may include actual brightness data and actual color temperature data. Furthermore, the light source calibration device can record the full optical data of multiple preset acquisition points of the light source each time it performs a light source calibration. Thus, during each light source calibration, the light source calibration device can retrieve the historical full optical data of the light source to be calibrated from its memory based on the light source's identification information.

[0029] Step S202: Perform data fitting based on the actual optical data and historical full-data optical data to obtain predicted optical data for other acquisition points besides the target acquisition point among multiple preset acquisition points. In this embodiment, the historical full-data optical data may include the first historical optical data of the target acquisition point and the second historical optical data of other acquisition points besides the target acquisition point among multiple acquisition points. The first historical optical data may include first historical brightness data and first historical color temperature data, and the second historical optical data may include second historical brightness data and second historical color temperature data. Therefore, after the light source calibration device obtains the actual optical data, it can use a fitting algorithm to fit the actual optical data and multiple historical full-data optical data to obtain possible predicted optical data for other acquisition points. The fitting algorithm may be a nonlinear polynomial fitting algorithm, a Gaussian fitting algorithm, or a radial basis function fitting algorithm, and the predicted optical data may include predicted brightness data and predicted color temperature data. It should be noted that the predicted brightness data can be fitted based on the actual brightness data, the first historical brightness data, and the second historical brightness data, and the predicted color temperature data can be fitted based on the actual color temperature data, the first historical color temperature data, and the second historical color temperature data.

[0030] Step S203: Compare the predicted optical data and actual optical data with the standard full-quantity optical data respectively to obtain the first data deviation result. The standard full-quantity optical data includes standard optical data from multiple preset acquisition points. In this embodiment, the standard full-quantity optical data may include standard optical data from the target acquisition point of the LED lamp under preset light source parameter control and standard optical data from multiple other acquisition points. The standard optical data may include standard brightness data and standard color temperature data. For each target acquisition point, the actual optical data is compared with the standard optical data; for each other acquisition point, the predicted optical data is compared with the standard optical data. Based on the deviation between the actual optical data and the standard optical data, and the deviation between the predicted optical data and the standard optical data, the first data deviation result is obtained. This determines whether the LED lamp has reached the standard optical state corresponding to the preset light source parameters, and thus determines whether the LED lamp needs to be calibrated. For example, it can be determined whether the LED luminaire has reached the standard optical state corresponding to the preset light source parameters by judging whether the deviation between the actual optical data and the standard optical data, and the deviation between the predicted optical data and the standard optical data are within the preset range; when the deviation between the actual optical data and the standard optical data, and the deviation between the predicted optical data and the standard optical data are both within the preset range, it is determined that the LED luminaire has reached the standard optical state corresponding to the preset light source parameters; when the deviation between the actual optical data and the standard optical data, and / or the deviation between the predicted optical data and the standard optical data are not within the preset range, it is determined that the LED luminaire has not reached the standard optical state corresponding to the preset light source parameters.

[0031] Step S204: Perform parameter calibration on the light source based on the first data deviation result. In this embodiment, when the LED lamp does not reach the standard optical state corresponding to the preset light source parameters, the LED lamp needs to be calibrated. At this time, the preset light source parameters can be adjusted according to the deviation between the actual optical data and multiple predicted optical data and the standard full optical data to obtain the calibrated light source parameters. The calibrated light source parameters are then sent to the LED lamp to calibrate the LED lamp.

[0032] In summary, the light source calibration method of this embodiment first collects the actual optical data of the target acquisition point of the light source, and then combines it with the historical full optical data of the light source to obtain the predicted optical data of multiple other acquisition points of the light source; then, it compares the actual optical data and multiple predicted optical data with the standard full optical data of multiple preset acquisition points to obtain a first data deviation result; finally, it performs parameter calibration on the light source according to the first data deviation result to achieve the calibration of the light source. Therefore, in the light source calibration process of this embodiment, the light source calibration device only needs to collect a small amount of optical data of the target acquisition point, which can reduce the acquisition time and preprocessing time of optical data, thereby improving the efficiency of light source calibration.

[0033] The following section will describe the specific implementation methods that may be used for the light source calibration method.

[0034] In some embodiments, the target acquisition point may include a first target acquisition point and a second target acquisition point, and multiple other acquisition points may be located in different partitions. Step S202 may include: for each other acquisition point, calculating the stability coefficient of the corresponding second historical optical data relative to the first historical optical data; for each partition, determining the first fitting weight corresponding to the first target acquisition point and the second fitting weight corresponding to the second target acquisition point based on the spatial distance between the third target acquisition point and the first and second target acquisition points within the partition; for each partition, constructing a corresponding fitting model based on the first and second fitting weights; and for each partition, calculating multiple predicted optical data using the corresponding fitting model based on the actual optical data and the corresponding stability coefficient.

[0035] In this embodiment, the first target acquisition point can be the normal zero point of the LED lamp, and the second target acquisition point can be the half-power corner point of the LED lamp. For example, a linear weighted fitting model is used for data fitting, wherein the linear weighted fitting model is as follows: L i =α(k LA,i ×L A +b LA,i )+β(k LB,i ×L B +bLB,i ), where α+β=1.

[0036] L i Let α be the predicted optical data for acquisition point i, β be the first fitting weight, and L be the second fitting weight. A For the optical data of the first target acquisition point, L B For the optical data of the second target acquisition point, k LA,i and b LA,i k is the stability coefficient of the second historical optical data at acquisition point i relative to the first historical optical data at the first target acquisition point. LB,i and b LB,i Let α be the stability coefficient of the second historical optical data of acquisition point i relative to the first historical optical data of the second target acquisition point. The stability coefficient can be calculated by substituting the entire historical data into the above model. When the spatial distance between acquisition point i and the first target acquisition point is greater than the spatial distance between acquisition point i and the second target acquisition point, α < β; when the spatial distance between acquisition point i and the first target acquisition point is less than the spatial distance between acquisition point i and the second target acquisition point, α > β; when the spatial distance between acquisition point i and the first target acquisition point is equal to the spatial distance between acquisition point i and the second target acquisition point, α = β. Furthermore, in this embodiment, the luminous area of ​​the LED lamp can be divided into multiple zones. For each zone, the other acquisition point closest to the center point of that zone is taken as the third target acquisition point. Based on the spatial distance between the third target acquisition point and the first and second target acquisition points, the first and second fitting weights in the fitting model of each other acquisition point within that zone are determined. Therefore, this embodiment does not require calculating the first and second fitting weights for each other acquisition point, reducing data fitting complexity and improving data fitting efficiency.

[0037] In some embodiments, step S203 may include: calculating a first deviation between the actual optical data and the first standard optical data, and calculating a second deviation between each predicted optical data and the corresponding second standard optical data; comparing the first deviation with a first preset threshold, and comparing each second deviation with a second preset threshold to obtain a first data deviation result, wherein the first preset threshold is less than the second preset threshold.

[0038] In this embodiment, a tiered deviation threshold setting method is adopted. Based on the spatial optical distribution requirements and application scenarios of the LED luminaire, different first and second preset thresholds are set for the optical data of key acquisition points and other acquisition points. This ensures the calibration accuracy of critical areas of the LED luminaire while avoiding over-calibration of non-critical areas due to the use of the same deviation threshold. Furthermore, when the LED scale in the luminaire is large, all acquisition points can be divided into different layers, and different deviation thresholds can be set for different layers; for example, all acquisition points can be divided into a core layer, a normal layer, and an edge layer. It is understood that different deviation thresholds can also be set for brightness data and color temperature data to improve calibration accuracy; for example, in scenarios requiring high-precision color temperature, the color temperature deviation threshold can be set lower than the brightness deviation threshold.

[0039] Additionally, it should be noted that the preset quantity can be the total number of other sampling points or a preset percentage of the total number of other sampling points. When the preset quantity is a preset percentage of the total number of other sampling points, the predicted optical parameters of the LED lamps will not be adjusted when only a few other sampling points have a second deviation greater than the second preset threshold, thus avoiding overcalibration.

[0040] In some embodiments, step S204 may include: when the first data deviation result is that the first deviation is greater than a first preset threshold, and / or a preset number of second deviations are greater than a second preset threshold, determining a parameter adjustment step size from a preset adjustment step size table based on the first deviation and the plurality of second deviations; and calibrating the light source parameters according to the parameter adjustment step size. In this embodiment, the parameter adjustment step size can be determined from the preset adjustment step size table based on the first deviation and the plurality of second deviations, and the preset light source parameters can be adjusted to obtain the first target optical parameters. For example, the preset adjustment step size table may include the correspondence between different brightness deviation ranges and different color temperature deviation ranges and different brightness adjustment values ​​and different color temperature adjustment values, and the preset adjustment step size table can be obtained in advance through experiments.

[0041] In some embodiments, the light source calibration method may include: when the first data deviation result is less than or equal to a first preset threshold, and multiple second deviations are all less than or equal to a second preset threshold, sending the light source parameters corresponding to the standard full optical data to the light source. In this embodiment, when it is determined that the LED lamp has reached the standard optical state, the preset light source parameters corresponding to the standard full optical data can be directly sent to the LED lamp, so that the LED lamp works according to the preset light source parameters, thereby achieving the corresponding standard optical state.

[0042] In some embodiments, after step S204, the light source calibration method may further include: packaging the calibrated light source parameters into a calibration file of a preset format; and sending the calibration file to the light source. In this embodiment, the light source calibration device can package the calibrated light source parameters into a binary standard file (BIN file) and then send it to the LED lamp to achieve the calibration of the light source.

[0043] In some embodiments, step S203 may include: comparing the actual brightness data and multiple predicted brightness data with standard brightness data respectively to obtain brightness data deviation; comparing the actual color temperature data and multiple predicted color temperature data with standard color temperature data respectively to obtain color temperature data deviation; comparing the brightness data deviation with a preset brightness deviation range, and comparing the color temperature data deviation with a preset color temperature deviation range to obtain a first data deviation result. In this embodiment, the light source calibration device can detect whether the brightness of the LED lamp reaches the standard optical state and whether the color temperature of the LED lamp reaches the standard optical state under the control of predicted optical parameters; comparing the brightness data deviation with a preset brightness deviation range, and comparing the color temperature data deviation with a preset color temperature deviation range; when the brightness data deviation is not within the preset brightness deviation range, it is determined that the brightness of the LED lamp has not reached the standard optical state, and the preset brightness parameter is adjusted; when the color temperature data deviation is not within the preset color temperature deviation range, it is determined that the color temperature of the LED lamp has not reached the standard optical state, and the preset color temperature parameter is adjusted. Thus, the brightness state and color temperature state of the LED lamp are calibrated.

[0044] In some other embodiments, after step S204, such as Figure 3 As shown, the light source calibration method may further include the following steps: Step S301: Acquire actual full optical data from multiple preset acquisition points under the control of calibrated light source parameters. Step S302: Compare the actual full optical data with standard full optical data to obtain a second data deviation result. Step S303: Determine whether the light source calibration is effective based on the second data deviation result. In this embodiment, after calibration, the LED lamp can be controlled to operate using the calibrated light source parameters, and actual full optical data from all preset acquisition points of the LED lamp can be acquired. Based on the second data deviation result between the actual full optical data and the standard full optical data, the validity of the calibration can be determined. If the calibration is deemed invalid, a recalibration process is triggered, improving the reliability of the light source calibration method. The actual full optical data may include the first actual optical data of the target acquisition point and the second actual optical data of multiple other acquisition points. In practice, the effectiveness of the light source calibration can be determined by comparing the deviation between the actual full optical data and the standard full optical data with a preset range. When the deviation between the actual full optical data and the standard full optical data is within the preset range, the calibration is deemed effective. When the deviation between the actual full optical data and the standard full optical data is not within the preset range, the calibration is deemed invalid.

[0045] Step S303: When calibration is deemed invalid, acquire the actual full optical data from multiple preset acquisition points under the control of the light source parameters before calibration. Step S304: Compare the actual full optical data with the standard full optical data to obtain the third data deviation result. Step S305: Calibrate the preset light source parameters based on the third data deviation result to obtain the second target optical parameters.

[0046] In this embodiment, when calibration is deemed invalid, a recalibration process is triggered. The light source is re-controlled using preset light source parameters, and all preset optical data points of the LED luminaire are re-acquired. The LED luminaire is then calibrated based on this actual full optical data. Since the actual full optical data reflects the actual optical state of multiple preset acquisition points, the accuracy of calibrating the LED luminaire based on this data is high, avoiding calibration invalidity caused by inaccurate data fitting in special circumstances. It should be noted that the specific implementations of steps S302 and S304 in this embodiment can refer to step S203, and the specific implementation of step S305 can refer to step S204. For the sake of brevity, these will not be described in detail here. Therefore, this embodiment verifies the rapid calibration process of the above embodiment. When the rapid calibration process of the above embodiment is invalid, the LED luminaire can be calibrated promptly using the standard calibration process.

[0047] In addition, the light source calibration equipment can also upload the actual optical data of the LED lamps, the actual full optical data, and the adjusted first or second target optical parameters to the cloud management platform to form repeatable and traceable data records, so as to support light source attenuation analysis and historical traceability, and ensure that the calibration process remains standardized under different lamps, different times and different operators.

[0048] On the other hand, this embodiment provides a light source calibration device, which may include a memory and a processor. The memory stores a computer program, and when the computer program is executed by the processor, it implements the method as described in any of the above embodiments. The light source calibration device may include components such as a processor 401 with one or more processing cores, a memory 402 with one or more computer-readable storage media, a power supply 403, and an input unit 404. Those skilled in the art will understand that... Figure 4 The structure of the light source calibration device shown does not constitute a limitation on the light source calibration device. It may include more or fewer components than shown, or combine certain components, or have different component arrangements. The processor 401 is the control center of the light source calibration device, connecting various parts of the entire light source calibration device through various interfaces and lines. By running or executing software programs and / or modules stored in the memory 402, and calling data stored in the memory 402, it performs various functions and processes data of the light source calibration device, thereby providing overall monitoring of the light source calibration device. Optionally, the processor 401 may include one or more processing cores; preferably, the processor 401 may integrate an application processor and a modem processor, wherein the application processor mainly handles the operating system, user interface, and computer programs, and the modem processor mainly handles wireless communication. It is understood that the aforementioned modem processor may also not be integrated into the processor 401.

[0049] The memory 402 can be used to store software programs and modules. The processor 401 executes various functional applications and data processing by running the software programs and modules stored in the memory 402. The memory 402 may mainly include a program storage area and a data storage area. The program storage area may store the operating system, computer programs required for at least one function (such as sound playback function, image playback function, etc.), etc.; the data storage area may store data created according to the use of the server, etc. In addition, the memory 402 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device. Accordingly, the memory 402 may also include a memory controller to provide the processor 401 with access to the memory 402.

[0050] The light source calibration equipment also includes a power supply 403 that supplies power to the various components. Preferably, the power supply 403 can be logically connected to the processor 401 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system. The power supply 403 may also include one or more DC or AC power supplies, recharging systems, power fault detection circuits, power converters or inverters, power status indicators, and other arbitrary components.

[0051] The light source calibration device may also include an input unit 404, which can be used to receive input digital or character information, and generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function control.

[0052] Although not shown, the light source calibration device may also include a display unit, etc., which will not be described in detail here. Specifically, in this embodiment, the processor 401 in the light source calibration device loads the executable files corresponding to the processes of one or more computer programs into the memory 402 according to the following instructions, and the processor 401 runs the computer programs stored in the memory 402 to perform the light source calibration method as described in any of the above embodiments.

[0053] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0054] The above provides a detailed description of a light source calibration method, device, and system provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

[0055] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A light source calibration method, characterized in that, include: Acquire historical full optical data of the light source, as well as the actual optical data of the target acquisition point of the light source, wherein the historical full optical data includes historical optical data of multiple preset acquisition points of the light source; Based on the actual optical data and the historical full optical data, data fitting is performed to obtain the predicted optical data of other acquisition points besides the target acquisition point among the multiple preset acquisition points; The predicted optical data and the actual optical data are compared with the standard full-quantity optical data respectively to obtain the first data deviation result, wherein the standard full-quantity optical data includes standard optical data of multiple preset acquisition points; The parameters of the light source are calibrated based on the first data deviation result.

2. The light source calibration method according to claim 1, characterized in that, After calibrating the light source parameters based on the first data deviation result, the light source calibration method further includes: Acquire the actual full optical data of multiple preset acquisition points under the control of calibrated light source parameters; The actual full optical data is compared with the standard full optical data to obtain the second data deviation result; Based on the second data deviation result, determine whether the calibration of the light source is effective; When the calibration is determined to be invalid, the actual full optical data of multiple preset acquisition points under the control of the light source parameters before calibration is obtained; The actual full optical data is compared with the standard full optical data to obtain the third data deviation result; The light source parameters are recalibrated based on the third data deviation result.

3. The light source calibration method according to claim 1, characterized in that, The target acquisition point includes a first target acquisition point and a second target acquisition point, and the other acquisition points are located in different partitions. The historical full optical data includes the first historical optical data of the target acquisition point and the second historical optical data of the other acquisition points. The step of fitting data based on the actual optical data and the historical full-data optical data to obtain predicted optical data for other acquisition points besides the target acquisition point among multiple preset acquisition points includes: For each of the other acquisition points, calculate the stability coefficient of the corresponding second historical optical data relative to the first historical optical data; For each partition, based on the spatial distance between the third target acquisition point within the partition and the first target acquisition point and the second target acquisition point, a first fitting weight corresponding to the first target acquisition point and a second fitting weight corresponding to the second target acquisition point are determined. For each partition, a corresponding fitting model is constructed based on the first fitting weight and the second fitting weight; For each partition, multiple predicted optical data are calculated using the corresponding fitting model based on the actual optical data and the corresponding stability coefficient.

4. The light source calibration method according to claim 3, characterized in that, The standard full-volume optical data includes the first standard optical data of the target acquisition point and the second standard optical data of multiple other acquisition points; The step of comparing the predicted optical data and the actual optical data with the standard full-data optical data to obtain the first data deviation result includes: Calculate the first deviation between the actual optical data and the first standard optical data, and calculate the second deviation between each predicted optical data and the corresponding second standard optical data; The first deviation is compared with the first preset threshold, and each second deviation is compared with the second preset threshold to obtain the first data deviation result; wherein the first preset threshold is less than the second preset threshold.

5. The light source calibration method according to claim 4, characterized in that, The step of calibrating the parameters of the light source based on the first data deviation result includes: When the first data deviation result is that the first deviation is greater than the first preset threshold, and / or a preset number of second deviations are greater than the second preset threshold, the parameter adjustment step size is determined from the preset adjustment step size table based on the first deviation and the multiple second deviations; The light source is calibrated by adjusting the step size according to the parameters.

6. The light source calibration method according to claim 5, characterized in that, Also includes: When the first data deviation result is less than or equal to the first preset threshold, and multiple second deviations are all less than or equal to the second preset threshold, the light source parameters corresponding to the standard full optical data are sent to the light source.

7. The light source calibration method according to claim 5, characterized in that, After adjusting the step size according to the parameters to calibrate the light source parameters, the light source calibration method further includes: Package the calibrated light source parameters into a calibration file with a preset format; The calibration file is sent to the light source.

8. The light source calibration method according to claim 1, characterized in that, The actual optical data includes actual brightness data and actual color temperature data; the predicted optical data includes predicted brightness data and predicted color temperature data; and the standard full-volume optical data includes standard brightness data and standard color temperature data. The step of comparing the predicted optical data and the actual optical data with the standard full-data optical data to obtain the first data deviation result includes: The actual brightness data and multiple predicted brightness data are compared with the standard brightness data to obtain the brightness data deviation; The actual color temperature data and multiple predicted color temperature data are compared with the standard color temperature data to obtain the color temperature data deviation; The first data deviation result is obtained by comparing the brightness data deviation with the preset brightness deviation range and comparing the color temperature data deviation with the preset color temperature deviation range.

9. A light source calibration device, characterized in that, It includes a memory and a processor, wherein the memory stores a computer program that, when executed by the processor, implements the method as described in any one of claims 1-8.

10. A light source calibration system, characterized in that, include: A spectrometer is used to collect optical data from a light source; The light source calibration device as described in claim 9 is connected to both the light source and the spectrometer.

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