Acceleration multiplying power ultraviolet test method and system

Abstract

The invention provides an acceleration rate ultraviolet test method and system, and the method comprises the steps: constructing a near ultraviolet radiation test environment through arranging a plurality of near ultraviolet radiation sources in a vacuum cavity in a combined manner; arranging a monitoring module in an irradiation area of each near ultraviolet irradiation source to obtain an irradiation curve of each near ultraviolet irradiation source; obtaining a photocell current value and a near ultraviolet irradiance value under different powers, and calibrating a function relationship among the output power of each near ultraviolet radiation source, the photocell current value and the near ultraviolet irradiance value through data fitting; calculating and distributing near ultraviolet irradiance values respectively borne by the plurality of near ultraviolet radiation sources by adopting an unsaturated distribution mode; the output power of the plurality of near ultraviolet radiation sources is cooperatively adjusted, and the temperature is dynamically adjusted according to the collected sample temperature parameters, so that the sample temperature is maintained in a set range. The acceleration rate of the ultraviolet aging test is improved, the test period is shortened, and the test efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of environmental testing technology, and more specifically, to an accelerated ultraviolet testing method and system. Background Technology

[0002] With the rapid development of the aerospace field, the durability assessment of materials under extreme environments has become particularly important. Ultraviolet (UV) aging testing is an important means of evaluating the anti-aging performance of materials, but current UV aging testing methods have the following problems: low acceleration rate, traditional UV aging testing methods have limited acceleration rates and long test cycles, making it difficult to meet the needs of rapid material durability assessment; existing methods are difficult to simulate high-intensity UV environments, resulting in incomplete environmental simulation.

[0003] Therefore, it is necessary to provide an accelerated ultraviolet testing method and system that can quickly and accurately assess the durability of materials under high-acceleration ultraviolet light conditions. Summary of the Invention

[0004] The purpose of this application is to provide an accelerated ultraviolet (UV) testing method and system that can solve at least one of the aforementioned technical problems. The specific solution is as follows:

[0005] According to a specific embodiment of this application, this application provides an accelerated ultraviolet (UV) irradiation testing method, comprising: constructing a UV irradiation testing environment by arranging multiple UV irradiation sources in combination within a vacuum chamber; arranging monitoring modules in the irradiation areas of each UV irradiation source to obtain the irradiation curves of each UV irradiation source; acquiring the photovoltaic cell current value and UV irradiance value at different powers, and calibrating the functional relationship between the output power of each UV irradiation source, the photovoltaic cell current value, and the UV irradiance value through data fitting; calculating and allocating the UV irradiance value borne by each of the multiple UV irradiation sources according to a preset total UV irradiance requirement using an unsaturated allocation method; and, during the accelerated UV irradiation test, using the calibrated functional relationship, coordinating the output power of the multiple UV irradiation sources and dynamically adjusting the temperature according to the collected sample temperature parameters to maintain the sample temperature within a set range.

[0006] According to a specific embodiment of this application, this application also provides an accelerated ultraviolet (UV) testing system, which executes the accelerated UV testing method described in this application, comprising: a construction module, which constructs a near-UV irradiation testing environment by arranging multiple near-UV irradiation sources in combination within the vacuum chamber; a monitoring and processing module, which arranges monitoring modules in the irradiation areas of each near-UV irradiation source to obtain the irradiation curves of each near-UV irradiation source; a fitting and processing module, which obtains the photovoltaic cell current value and near-UV irradiance value at different powers, and calibrates the functional relationship between the output power of each near-UV irradiation source, the photovoltaic cell current value, and the near-UV irradiance value through data fitting; a calculation module, which calculates and allocates the near-UV irradiance value borne by each of the multiple near-UV irradiation sources according to a preset total near-UV irradiance requirement using an unsaturated allocation method; and an adjustment module, which, during the accelerated UV testing process, uses the calibrated functional relationship to coordinately adjust the output power of the multiple near-UV irradiation sources and dynamically adjusts the temperature according to the collected sample temperature parameters to maintain the sample temperature within a set range.

[0007] According to specific embodiments of this application, this application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method described in any of the preceding claims.

[0008] According to specific embodiments of this application, this application also provides an electronic device, including: one or more processors; and a storage device for storing one or more programs, which, when executed by the one or more processors, cause the one or more processors to perform the method described in any of the preceding claims.

[0009] Compared with the prior art, the above-described solutions of this application have at least the following beneficial effects:

[0010] This application achieves high-efficiency and high-accuracy ground-based testing through multiple near-ultraviolet irradiation source combinations, environmental parameter control, multi-irradiation source collaborative control, and dynamic temperature control strategies. Specifically, by employing real-time current and irradiance conversion algorithms, it overcomes the problem of ultraviolet light source decay over time, effectively ensuring long-term consistency of test conditions. The optimized combination of multiple near-ultraviolet irradiation sources and the adoption of an unsaturated power allocation strategy not only improve the consistency of the irradiation field and significantly extend the lifespan of expensive ultraviolet lamps, but also significantly increase the acceleration rate of ultraviolet aging tests, shorten the test cycle, improve test efficiency, and save test costs. Attached Figure Description

[0011] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings:

[0012] Figure 1 This is a flowchart illustrating the accelerated ultraviolet testing method according to an embodiment of this application;

[0013] Figure 2 This is a schematic diagram of an application example of the accelerated ultraviolet testing method according to an embodiment of this application;

[0014] Figure 3 This is a schematic diagram of the diffusion of irradiated ultraviolet light from a near-ultraviolet irradiation source in the accelerated ultraviolet testing method of this application embodiment;

[0015] Figure 4 This is a schematic diagram illustrating the relationship between the photocell current value and the near-ultraviolet irradiance value of the near-ultraviolet irradiation source at different output powers in the accelerated ultraviolet testing method of this application embodiment;

[0016] Figure 5 This is a schematic diagram showing the distribution of near-ultraviolet irradiance values ​​of the near-ultraviolet irradiation source on the sample target stage in the accelerated ultraviolet testing method of this application embodiment.

[0017] Figure 6 This is a schematic diagram showing another distribution of the near-ultraviolet irradiance value of the near-ultraviolet irradiation source on the sample target stage in the accelerated ultraviolet testing method of this application embodiment.

[0018] Figure 7 This is a schematic diagram of the accelerated ultraviolet testing system according to an embodiment of this application;

[0019] Figure 8 This is a schematic diagram of the electronic device structure shown in an embodiment of this application. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail 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 in 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] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the application. The singular forms “a,” “said,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms, and “multiple” generally includes at least two unless the context clearly indicates otherwise.

[0022] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0023] It should be understood that although the terms first, second, third, etc., may be used in the embodiments of this application, these descriptions should not be limited to these terms. These terms are only used to distinguish the descriptions. For example, first may also be referred to as second without departing from the scope of the embodiments of this application, and similarly, second may also be referred to as first.

[0024] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or device. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or device that includes said element.

[0025] This application provides a method for determining the acceleration ratio of ultraviolet (UV) irradiation. By combining multiple near-UV irradiation sources, controlling environmental parameters, coordinating the control of multiple irradiation sources, and employing a dynamic temperature control strategy, it achieves high-efficiency and high-accuracy ground-based testing, significantly improves the acceleration ratio of UV aging tests, shortens the test cycle, increases test efficiency, and saves test costs. At the same time, it can simulate extreme UV environments, providing a reliable basis for material research and development and performance evaluation.

[0026] It should be noted that this application has a wide range of applications, and is particularly suitable for aging tests of spacecraft materials and ground-exposed materials.

[0027] The following is in conjunction with the appendix Figures 1 to 6 Detailed description of optional embodiments of the method of this application.

[0028] like Figure 1 As shown, in step S101, a near-ultraviolet irradiation test environment is constructed by arranging multiple near-ultraviolet irradiation sources in combination within the vacuum cavity.

[0029] Multiple near-ultraviolet irradiation sources are arranged inside a vacuum chamber, and a near-ultraviolet irradiation experimental environment is constructed by combining multiple near-ultraviolet irradiation sources.

[0030] For multiple near-ultraviolet irradiation sources, for example, the axis of each near-ultraviolet irradiation source forms a specified angle with the vertical axis of the vacuum cavity, the specified angle being 15° to 45°.

[0031] The multiple near-ultraviolet irradiation sources are, for example, multiple (N≥2) near-ultraviolet lamps (such as high-pressure mercury-xenon lamps or high-power UV-LEDs). By arranging them in an array, an overlapping and uniform irradiation field is ensured to be formed in the target area of ​​the sample to be tested.

[0032] exist Figure 2 In the example, two near-ultraviolet irradiation sources, temperature control equipment, and sample target stage are arranged in a vacuum chamber. Under the premise of ensuring that the area of ​​a specific irradiation region and the temperature control conditions remain unchanged, a near-ultraviolet irradiation test environment is constructed by combining multiple near-ultraviolet irradiation sources.

[0033] The axes of the two near-ultraviolet irradiation sources are at a specified angle to the vertical axis of the vacuum cavity, and the specified angle is 30°.

[0034] Specifically, by deploying a monitoring module, two near-ultraviolet (NIUV) irradiance sources are activated to obtain irradiance data from both sources. Then, a control module controls the output power of the two NIUV irradiance sources to achieve the required NIUV acceleration ratio. When the NIUV irradiance sources are activated, the irradiated ultraviolet light from each source diffuses and forms an irradiation area. The diffusion of the irradiated ultraviolet light is as follows: Figure 3 As shown.

[0035] It should be noted that the above is only an optional example and should not be construed as a limitation of this application.

[0036] Next, in step S102, monitoring modules are arranged in the irradiation areas of each near-ultraviolet irradiation source to obtain the irradiation curves of each near-ultraviolet irradiation source.

[0037] Specifically, a monitoring module (e.g., the first photovoltaic cell, see details) is placed at a designated location within the irradiated area. Figure 2 This ensures that the monitoring module can provide feedback on the irradiation curves of each near-ultraviolet irradiation source in the designated irradiation area, and is not affected by interference from other near-ultraviolet irradiation sources.

[0038] Optionally, the designated location of the irradiation area refers to arranging the first photovoltaic cell at the edge of the effective envelope region of each light source, and controlling the output power of each near-ultraviolet irradiation source according to its irradiation curve. A light shield or angle compensation is used to ensure that the arranged photovoltaic cells only receive signals from the specific corresponding light source.

[0039] Furthermore, a second photovoltaic cell is provided on the sample target stage, which is used to provide feedback on the irradiance achieved by all near-ultraviolet irradiation sources.

[0040] Monitoring modules are deployed in the irradiation areas of each near-ultraviolet radiation source, and the irradiation curves of each near-ultraviolet radiation source are obtained using the monitoring modules (i.e., the first photovoltaic cell).

[0041] It should be noted that the above is only an optional example and should not be construed as a limitation of this application.

[0042] Next, in step S103, the photovoltaic cell current value and near-ultraviolet irradiance value under different power are obtained, and the functional relationship between the output power, photovoltaic cell current value and near-ultraviolet irradiance value of each near-ultraviolet irradiation source is determined by data fitting.

[0043] Each near-ultraviolet irradiation source was calibrated.

[0044] Specifically, the near-ultraviolet irradiation source is turned on, and the ultraviolet irradiance is used in conjunction with the monitoring module (i.e., the first photovoltaic cell) to obtain the photovoltaic cell current value and near-ultraviolet irradiance value (sometimes simply referred to as "irradiance") at different power levels. The functional relationship between the output power of each near-ultraviolet irradiation source, the photovoltaic cell current value, and the near-ultraviolet irradiance value is determined through data fitting.

[0045] Furthermore, the initial near-ultraviolet (NIUV) irradiation source power was 650W, and the photovoltaic current value of the first photovoltaic cell was read as 13.39mA, with a near-ultraviolet irradiance value of 2.3. After the initial test step, the NIUV irradiation source power was adjusted for each subsequent test step, and the photovoltaic current value and near-ultraviolet irradiance value were obtained under different NIUV irradiation source powers.

[0046] Specifically, this is achieved by adjusting the power of the near-ultraviolet irradiation source within a specified range, which is 650W to 1000W.

[0047] For example, the ultraviolet source power can be set to 1000W, 950W, 850W, 750W, and 650W respectively. By reading the photovoltaic cell current value and near-ultraviolet irradiance value respectively, the relationship between the photovoltaic cell current value and near-ultraviolet irradiance value of each near-ultraviolet irradiation source at different output powers can be obtained. See [link to documentation] for details. Figure 3 Specifically, the least squares method was used for data fitting, and the following expression was used to represent the relationship between the photovoltaic cell current value and the near-ultraviolet irradiance value of each near-ultraviolet irradiation source under different output powers.

[0048] Y = aX + b (1)

[0049] Where Y represents the near-ultraviolet irradiance value; X represents the photovoltaic current value detected by the first photovoltaic cell; b represents the first linear coefficient; and a represents the second linear coefficient.

[0050] Calculations based on multiple sets of data in Table 1 yielded values ​​a = 0.3829 and b = -2.7394. The values ​​a and b were input into the control program, and the output power of the near-ultraviolet power supply was adjusted by the detection current fed back to the control program by the first photovoltaic cell, thereby ensuring the near-ultraviolet irradiance value of the near-ultraviolet irradiation source 1.

[0051] Table 1

[0052]

[0053] By fitting and calculating the above data, the relationship between the photovoltaic cell current value and the near-ultraviolet irradiance value of each near-ultraviolet irradiation source under different output powers can be accurately determined.

[0054] It should be noted that the above is only an optional example and should not be construed as a limitation of this application.

[0055] Next, in step S104, based on the preset total near-ultraviolet irradiance requirement, an unsaturated allocation method is used to calculate and allocate the near-ultraviolet irradiance value borne by each of the multiple near-ultraviolet irradiance sources.

[0056] Specifically, based on the set total near-ultraviolet irradiance requirement (e.g., setting a target total irradiance value or segmented target total irradiance values), an unsaturated allocation method is adopted to calculate and allocate the near-ultraviolet irradiance value (i.e., the irradiance share each of the multiple near-ultraviolet irradiance sources) to be borne by each source, and the output power of the multiple near-ultraviolet irradiance sources is adjusted collaboratively by the controller.

[0057] For example, when the target near-ultraviolet irradiance is 10 SC, the control system allocates near-ultraviolet irradiance source 1 to provide 2 SC, near-ultraviolet irradiance source 2 to provide 3 SC, near-ultraviolet irradiance source 3 to provide 2 SC, and near-ultraviolet irradiance source 4 to provide 3 SC, thereby ensuring the accuracy of the near-ultraviolet irradiance in the test area and reserving power adjustment margin to cope with light source attenuation.

[0058] In one specific embodiment, the axial direction of each near-ultraviolet irradiation source (in this example, the axis along the length) is parallel to the vertical axis of the vacuum cavity (specifically, the vertical axis perpendicular to the sample target surface, for example...). Figure 2 The specified angle between the vertical axis O of the vacuum cavity and the axis (representing the vertical axis of the vacuum cavity) is 30°. For each near-ultraviolet light source's axis (in this example, the axis along the length direction, for example...) Figure 2The specified angle between the axis Z1 or Z2 in the vacuum cavity and the vertical axis of the vacuum cavity is 30°. This results in a ratio of approximately 9:11 between the irradiance of the leftmost light source line at the smallest angle to the vertical axis and the irradiance of the rightmost light source line at the largest angle to the vertical axis during ultraviolet light diffusion. Based on this ratio, the coordinated irradiation of the four near-ultraviolet irradiation sources can achieve a complementary arrangement of the sample target stage's irradiation uniformity and irradiance distribution. The basic principle is to follow the complementary principle of mutually symmetrical near-ultraviolet irradiation sources. According to the complementary principle of near-ultraviolet irradiation sources, the allocation of near-ultraviolet irradiation sources should follow, for example, a pairwise symmetrical principle.

[0059] It should be noted that in this example, each near-ultraviolet irradiation source includes an axial direction (i.e., the axis of the light source or the axis of its length), the leftmost light source line (i.e., the leftmost irradiation ray), and the rightmost light source line (i.e., the rightmost irradiation ray). When the specified angle between the axial direction of a certain near-ultraviolet irradiation source and the vertical axis of the vacuum cavity is 30°, the angle between the leftmost light source line of the near-ultraviolet irradiation source and the vertical axis of the vacuum cavity is less than 30°, and is the smallest angle among the set of angles formed by all the light source lines of the near-ultraviolet irradiation source and the vertical axis of the vacuum cavity (assuming that each light source line forms an angle with the vertical axis of the vacuum cavity, thus forming a set of angles). The angle between the rightmost light source line of the near-ultraviolet irradiation source and the vertical axis of the vacuum cavity is greater than 30°, and it is the largest angle among the set of angles formed by all light source lines of the near-ultraviolet irradiation source and the vertical axis of the vacuum cavity (assuming each light source line forms an angle with the vertical axis of the vacuum cavity, thus forming a set of angles). Because the angles formed are different, the irradiance also varies. Therefore, the irradiance distribution of the near-ultraviolet irradiation source is determined based on multiple influencing factors, including the number and location of the near-ultraviolet irradiation sources, the specified angles formed by the axis of each near-ultraviolet irradiation source and the vertical axis of the vacuum cavity, and the maximum and minimum angles formed by the light source lines and the vertical axis of the vacuum cavity.

[0060] exist Figure 5 and Figure 6 The examples listed are two near-ultraviolet (NIUV) irradiation sources: NIUV source 1 and NIUV source 3. Because the specified angles formed by the light source rays (i.e., irradiation rays) of the NIUV irradiation sources and the vertical axis of the vacuum cavity differ, the UV irradiance received on the sample stage will vary. The specified angle between NIUV source 1 and the vertical axis of the vacuum cavity is 30°, resulting in a UV irradiance distribution on the sample stage that is larger on the left and smaller on the right (i.e.,...). Figure 5 (In the numerical distribution within the inner circle, the values ​​on the left are larger, and the values ​​on the right are smaller. See details.) Figure 5As shown. The specified angle between the near-ultraviolet irradiation source 3 and the vertical axis of the vacuum cavity is 30°, resulting in a distribution of ultraviolet irradiance on the sample target stage that is smaller on the left and larger on the right (i.e., Figure 6 (In the numerical distribution within the inner circle, the values ​​on the left are smaller, and the values ​​on the right are larger. See details.) Figure 6 In the combined irradiation process, the symmetrical near-ultraviolet irradiation sources work together to compensate for each other's illuminance distribution in the irradiated area, forming a relatively uniform ultraviolet irradiation region.

[0061] It should be noted that the above is only an optional example and should not be construed as a limitation of this application.

[0062] Next, in step S105, during the accelerated ultraviolet test, the output power of multiple near-ultraviolet irradiation sources is adjusted in a coordinated manner using the calibrated functional relationship, and the temperature is dynamically adjusted according to the collected sample temperature parameters so that the sample temperature is maintained within the set range.

[0063] During the experiment, the ultraviolet irradiance intensity and temperature parameters of the sample surface are collected in real time; the power of the ultraviolet source is adjusted in a closed loop according to the feedback current of the photovoltaic cell using a calibrated functional relationship; at the same time, the heating or cooling output of the temperature control equipment is dynamically adjusted according to the sample temperature change to ensure that the sample temperature is maintained within the set range.

[0064] For customized temperature control strategies at different acceleration rates, when the surface temperature of the sample to be tested exceeds the set temperature range, the temperature control device is controlled to cool down the sample target stage.

[0065] For example, when the acceleration ratio is set to 10 SC, light energy is converted into heat energy, and the surface temperature of the sample under test rises rapidly. Through real-time sensing by the PT100, when the temperature exceeds the upper limit of the range of 40℃ to 50℃, the flow rate of the target stage cooling unit is automatically increased or the refrigerant temperature is reduced to offset the radiant heat.

[0066] When the surface temperature of the sample to be tested is lower than the set temperature range, the temperature control device is used to heat up the sample target stage.

[0067] For example, at an acceleration rate of 5SC, due to the reduced light and heat input, the temperature of the sample under test is lower in the vacuum chamber environment (lacking air convection insulation). In this case, the temperature control equipment switches from cooling to compensating heating to ensure that the temperature of the sample under test does not fall below the lower limit required by the test.

[0068] The customized temperature control strategy described above can effectively ensure that the temperature of the sample under test always meets the test conditions at different irradiation intensities.

[0069] In one specific embodiment, the sample to be tested needs to be subjected to 5000 ESH of near-ultraviolet irradiation. Throughout the near-ultraviolet irradiation, the temperature of the sample is controlled between 40°C and 50°C. For 3000 ESH of near-ultraviolet irradiation, an acceleration factor of 10 SC is required, and for 2000 ESH, an acceleration factor of 5 SC is required. During the above experiment, the near-ultraviolet irradiation acceleration factor of the sample to be tested at different experimental stages is adjusted by the "ultraviolet light source configuration".

[0070] Because near-ultraviolet (NIUV) irradiation causes the surface temperature of the sample to rise during the irradiation process, temperature control equipment is needed to regulate the temperature of the sample stage and maintain a constant sample temperature. For example, at an acceleration ratio of 10 SC, without temperature control, the sample temperature would remain between 80°C and 90°C, exceeding the experimental requirements. To maintain the sample temperature between 40°C and 50°C, temperature control equipment is needed to cool the sample stage, ensuring the sample receives NIUV irradiation at this temperature. Conversely, at an acceleration ratio of 5 SC, without temperature control, the sample temperature would remain between 10°C and 20°C, below the experimental requirements. To maintain the sample temperature between 40°C and 50°C, temperature control equipment is needed to heat the sample stage, ensuring the sample receives NIUV irradiation at this temperature. For example, by adjusting the output temperature of the temperature control device through the test environment temperature feedback module, it is possible to effectively ensure that the temperature of the sample under test meets the test conditions during the near-ultraviolet irradiation test.

[0071] It should be noted that the above is only an optional example and should not be construed as a limitation of this application.

[0072] Compared with existing technologies, this application achieves high-efficiency and high-accuracy ground-based testing through multiple near-ultraviolet irradiation source combinations, environmental parameter control, multi-irradiation source collaborative control, and dynamic temperature control strategies. Specifically, by employing real-time current and irradiance conversion algorithms, it overcomes the problem of ultraviolet light source decay over time, effectively ensuring long-term consistency of test conditions. The optimized combination of multiple near-ultraviolet irradiation sources and the adoption of an unsaturated power allocation strategy not only improve the consistency of the irradiation field and significantly extend the lifespan of expensive ultraviolet lamps, but also significantly increase the acceleration rate of ultraviolet aging tests, shorten the test cycle, improve test efficiency, and save test costs.

[0073] The following is in conjunction with the appendix Figure 7 Detailed description of optional embodiments of the system in this application.

[0074] This application also provides an accelerated ultraviolet testing system that performs the accelerated ultraviolet testing method described in this application.

[0075] like Figure 7 As shown, the accelerated ultraviolet testing system includes a construction module 410, a monitoring and processing module 420, a fitting and processing module 430, a calculation module 440, and an adjustment module 450.

[0076] Specifically, the construction module 410 constructs a near-ultraviolet (NIUV) irradiation test environment by arranging multiple NIUV irradiation sources in a combined manner within the vacuum chamber. The monitoring and processing module 420 deploys monitoring modules in the irradiation areas of each NIUV irradiation source to obtain the irradiation curves of each source. The fitting and processing module 430 acquires the photovoltaic cell current value and NIUV irradiance value at different power levels, and calibrates the functional relationship between the output power of each NIUV irradiation source, the photovoltaic cell current value, and the NIUV irradiance value through data fitting. The calculation module 440 calculates and allocates the NIUV irradiance value borne by each of the multiple NIUV irradiation sources according to the preset total NIUV irradiance requirement, using an unsaturated allocation method. During the accelerated UV test, the adjustment module 450 utilizes the calibrated functional relationship to coordinately adjust the output power of the multiple NIUV irradiation sources and dynamically adjusts the temperature based on the collected sample temperature parameters to maintain the sample temperature within the set range.

[0077] According to an optional embodiment, the axial direction of each near-ultraviolet irradiation source forms a specified angle with the vertical axis of the vacuum cavity, wherein the specified angle is 15° to 45°. The number of near-ultraviolet irradiation sources is greater than or equal to two.

[0078] According to an optional implementation, by adjusting a specified range of the power of the near-ultraviolet irradiation source, the relationship between the photovoltaic cell current value and the near-ultraviolet irradiance value of each near-ultraviolet irradiation source at different output powers can be obtained, wherein the specified range is 650W to 1000W.

[0079] According to the optional implementation method, the least squares method is used for data fitting, and the following expression is used to represent the relationship between the photovoltaic cell current value and the near-ultraviolet irradiance value of each near-ultraviolet irradiation source under different output powers.

[0080] Y = aX + b

[0081] Where Y represents the near-ultraviolet irradiance value; X represents the photovoltaic current value detected by the first photovoltaic cell; b represents the first linear coefficient; and a represents the second linear coefficient.

[0082] According to the optional implementation method, based on the set target total irradiance value or the segmented target total irradiance value of multiple segments, an unsaturated allocation method is adopted to calculate and allocate the near-ultraviolet irradiance value borne by each of the multiple near-ultraviolet irradiance sources. The output power of the multiple near-ultraviolet irradiance sources is coordinated and adjusted by the controller to meet the set target total irradiance value or the segmented target total irradiance value of multiple segments.

[0083] According to the optional implementation, when the surface temperature of the sample to be tested exceeds the set temperature range, the temperature control device is controlled to cool down the sample target stage; when the surface temperature of the sample to be tested is lower than the set temperature range, the temperature control device is controlled to heat up the sample target stage.

[0084] It should be noted that the content of the accelerated ultraviolet testing method performed by the accelerated ultraviolet testing system in this application embodiment is largely the same as the content of the accelerated ultraviolet testing method in this application, so the description of the same content is omitted.

[0085] Compared with existing technologies, this application achieves high-efficiency and high-accuracy ground-based testing through multiple near-ultraviolet irradiation source combinations, environmental parameter control, multi-irradiation source collaborative control, and dynamic temperature control strategies. Specifically, by employing real-time current and irradiance conversion algorithms, it overcomes the problem of ultraviolet light source decay over time, effectively ensuring long-term consistency of test conditions. The optimized combination of multiple near-ultraviolet irradiation sources and the adoption of an unsaturated power allocation strategy not only improve the consistency of the irradiation field and significantly extend the lifespan of expensive ultraviolet lamps, but also significantly increase the acceleration rate of ultraviolet aging tests, shorten the test cycle, improve test efficiency, and save test costs.

[0086] like Figure 8 As shown, this embodiment provides an electronic device, which includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, which are executed by the at least one processor to enable the at least one processor to perform the method steps described in the above embodiment.

[0087] This application provides a non-volatile computer storage medium storing computer-executable instructions that can perform the steps described in the above embodiments.

[0088] The following is for reference. Figure 8 The diagram illustrates a structural schematic of an electronic device suitable for implementing the embodiments of this application. The terminal devices in the embodiments of this application may include, but are not limited to, mobile terminals such as mobile phones, laptops, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), in-vehicle terminals (e.g., in-vehicle navigation terminals), and fixed terminals such as digital TVs and desktop computers. Figure 8 The electronic device shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments of this application.

[0089] like Figure 8As shown, the electronic device may include a processing unit (e.g., a central processing unit, a graphics processing unit, etc.) 401, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 402 or a program loaded from a storage device 408 into a random access memory (RAM) 403. The RAM 403 also stores various programs and data required for the operation of the electronic device. The processing unit 401, ROM 402, and RAM 403 are interconnected via a bus 404. An input / output (I / O) interface 405 is also connected to the bus 404.

[0090] Typically, the following devices can be connected to I / O interface 405: input devices 406 including, for example, touchscreens, touchpads, keyboards, mice, cameras, microphones, accelerometers, gyroscopes, etc.; output devices 407 including, for example, liquid crystal displays (LCDs), speakers, vibrators, etc.; storage devices 408 including, for example, magnetic tapes, hard disks, etc.; and communication devices 409. Communication device 409 allows electronic devices to communicate wirelessly or wiredly with other devices to exchange data. Although Figure 8 Electronic devices with various devices are shown, but it should be understood that it is not required to implement or have all of the devices shown. More or fewer devices may be implemented or have alternatively.

[0091] Specifically, according to embodiments of this application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of this application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication device 409, or installed from a storage device 408, or installed from a ROM 402. When the computer program is executed by the processing device 401, it performs the functions defined in the methods of the embodiments of this application.

[0092] It should be noted that the computer-readable medium described above in this application can be a computer-readable signal medium, a computer-readable storage medium, or any combination thereof. A computer-readable storage medium can be, for example,—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this application, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In this application, a computer-readable signal medium can include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium can be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to: wires, optical fibers, RF (radio frequency), etc., or any suitable combination thereof.

[0093] The aforementioned computer-readable medium may be included in the aforementioned electronic device; or it may exist independently and not assembled into the electronic device.

[0094] Computer program code for performing the operations of this application can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0095] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0096] The units described in the embodiments of this application can be implemented in software or hardware. The names of the units are not, in some cases, limiting the scope of the unit itself.

Claims

1. An accelerated ultraviolet (UV) testing method, characterized in that, include: A near-ultraviolet irradiation test environment is constructed by combining multiple near-ultraviolet irradiation sources in a vacuum chamber. Monitoring modules are deployed in the irradiation areas of each near-ultraviolet irradiation source to obtain the irradiation curves of each near-ultraviolet irradiation source; The photovoltaic cell current value and near-ultraviolet irradiance value under different power were obtained, and the functional relationship between the output power, photovoltaic cell current value and near-ultraviolet irradiance value of each near-ultraviolet irradiation source was calibrated by data fitting; Based on the preset total near-ultraviolet irradiance requirement, an unsaturated allocation method is used to calculate and allocate the near-ultraviolet irradiance value borne by each of the multiple near-ultraviolet irradiance sources. During accelerated ultraviolet (UV) testing, the output power of multiple near-UV irradiation sources is adjusted in a coordinated manner using the calibrated functional relationship, and the temperature is dynamically adjusted according to the collected sample temperature parameters to maintain the sample temperature within the set range.

2. The accelerated ultraviolet testing method according to claim 1, characterized in that, include: The axial direction of each near-ultraviolet irradiation source forms a specified angle with the vertical axis of the vacuum cavity, wherein the specified angle is 15° to 45°; The number of near-ultraviolet radiation sources is greater than or equal to two.

3. The accelerated ultraviolet testing method according to claim 1, characterized in that, Further includes: By adjusting a specified range of near-ultraviolet irradiation source power, the relationship between the photovoltaic cell current value and near-ultraviolet irradiance value of each near-ultraviolet irradiation source under different output powers is obtained, wherein the specified range is 650W to 1000W.

4. The accelerated ultraviolet testing method according to claim 3, characterized in that, Further includes: The least squares method was used for data fitting, and the following expression was used to represent the relationship between the photovoltaic cell current value and the near-ultraviolet irradiance value of each near-ultraviolet irradiation source under different output powers: Y = aX + b Where Y represents the near-ultraviolet irradiance value; X represents the photovoltaic current value detected by the first photovoltaic cell; b represents the first linear coefficient; and a represents the second linear coefficient.

5. The accelerated ultraviolet testing method according to claim 1, characterized in that, include: Based on the set target total irradiance value or the segmented target total irradiance value, an unsaturated allocation method is adopted to calculate and allocate the share of near-ultraviolet irradiance value borne by each of the multiple near-ultraviolet irradiance sources. The output power of the multiple near-ultraviolet irradiance sources is adjusted by the controller to meet the set target total irradiance value or the segmented target total irradiance value.

6. The accelerated ultraviolet testing method according to claim 1, characterized in that, include: When the surface temperature of the sample to be tested exceeds the set temperature range, the temperature control device is used to cool down the sample target stage. When the surface temperature of the sample to be tested is lower than the set temperature range, the temperature control device is used to heat up the sample target stage.

7. An accelerated ultraviolet testing system, characterized in that, The accelerated ultraviolet testing method according to any one of claims 1 to 6 includes: The construction module constructs a near-ultraviolet irradiation test environment by combining multiple near-ultraviolet irradiation sources in a vacuum chamber. The monitoring and processing module is deployed in the irradiation area of ​​each near-ultraviolet irradiation source to obtain the irradiation curve of each near-ultraviolet irradiation source. The fitting processing module obtains the photovoltaic cell current value and near-ultraviolet irradiance value under different power levels, and calibrates the functional relationship between the output power, photovoltaic cell current value and near-ultraviolet irradiance value of each near-ultraviolet irradiation source through data fitting. The calculation module calculates and allocates the near-ultraviolet irradiance value borne by each of the multiple near-ultraviolet irradiance sources according to the preset total near-ultraviolet irradiance requirement using an unsaturated allocation method. During accelerated ultraviolet testing, the adjustment module utilizes the calibrated functional relationship to coordinate the output power of multiple near-ultraviolet irradiation sources and dynamically adjusts the temperature based on the collected sample temperature parameters, so as to maintain the sample temperature within the set range.

8. The accelerated ultraviolet testing system according to claim 7, characterized in that, The above includes: The axial direction of each near-ultraviolet irradiation source forms a specified angle with the vertical axis of the vacuum cavity, wherein the specified angle is 15° to 45°; The number of near-ultraviolet radiation sources is greater than or equal to two.

9. The accelerated ultraviolet testing system according to claim 7, characterized in that, Further includes: By adjusting a specified range of near-ultraviolet irradiation source power, the relationship between the photovoltaic cell current value and near-ultraviolet irradiance value of each near-ultraviolet irradiation source under different output powers is obtained, wherein the specified range is 650W to 1000W.

10. The accelerated ultraviolet testing system according to claim 9, characterized in that, Further includes: The least squares method was used for data fitting, and the following expression was used to represent the relationship between the photovoltaic cell current value and the near-ultraviolet irradiance value of each near-ultraviolet irradiation source under different output powers: Y = aX + b Where Y represents the near-ultraviolet irradiance value; X represents the photovoltaic current value detected by the first photovoltaic cell; b represents the first linear coefficient, and a represents the second linear coefficient.

Images