An intelligent temperature and humidity control method and system for a rapid temperature change test chamber

Abstract

This application relates to the technical field of environmental parameter control, and particularly to an intelligent temperature and humidity control method and system for a rapid temperature change test chamber. The method includes: obtaining the environmental parameter values inside the test chamber within a preset time period before the current moment to determine the trend value of the environmental parameter values at the current moment; according to the magnitude relationship between the trend value at the current moment and the preset trend threshold, respectively determining the weight values of different moments within the preset time period relative to the current moment to perform weighted averaging on the environmental parameter values at different moments within the preset time period, and taking the difference between the target value of the environmental parameter values and the weighted average result as the first adjustment amount information; adjusting the operating parameter values of the environmental parameter control module of the test chamber according to the first adjustment amount information so that the environmental parameter control module controls the environmental parameter values inside the test chamber. Through the above technical solutions, more accurate control of the environmental parameter values inside the test chamber can be achieved.

Description

Technical Field

[0001] This application relates to the technical field of environmental parameter control, and particularly relates to an intelligent temperature and humidity control method and system for a rapid temperature change test chamber. Background Art

[0002] The rapid temperature change test chamber is simply referred to as the fast temperature change test chamber. The fast temperature change test chamber is an environmental simulation test device, mainly used to simulate the environment in which the product experiences rapid temperature changes in a short period of time, so as to detect the performance and reliability of the product under rapid temperature change conditions. For example, the temperature inside the test chamber can be adjusted through a temperature adjustment component; the test chamber can also quickly adjust the humidity inside the test chamber through a humidity adjustment component to test the performance and reliability of the product to be tested under rapid humidity change conditions.

[0003] In order to control the temperature and humidity inside the test chamber, in the related art, for example, in the Chinese patent application document with the publication number CN117772296A, a constant temperature and humidity test chamber and its control method are provided, including: a main control module, a temperature and humidity detection module, a heating module, a refrigeration module, a humidification module, and a dehumidification module. The constant temperature and humidity test chamber is initialized to obtain the set test temperature and test humidity; the temperature inside the constant temperature and humidity test chamber is adjusted to the test temperature, and the humidity inside the constant temperature and humidity test chamber is adjusted to the test humidity; the test sample is placed into the constant temperature and humidity test chamber for heat compensation; the temperature inside the constant temperature and humidity test chamber is maintained at the test temperature, and the humidity inside the constant temperature and humidity test chamber is maintained at the test humidity.

[0004] When using the temperature adjustment component or humidity adjustment component inside the test chamber to adjust the temperature or humidity inside the test chamber, there is a lag in perceiving the change of the temperature or humidity inside the test chamber, making it difficult to accurately adjust the temperature or humidity inside the test chamber. Summary of the Invention

[0005] To overcome the problem in the related art that it is difficult to accurately adjust the temperature or humidity inside the test chamber, this application provides an intelligent temperature and humidity control method and system for a rapid temperature change test chamber.

[0006] According to the first aspect of the embodiments of the present application, a method for intelligent temperature and humidity control of a rapid temperature change test chamber is provided, including: obtaining the environmental parameter values inside the test chamber within a preset time period before the current moment to determine the trend value of the environmental parameter values at the current moment; the trend value is used to characterize the change rate of the environmental parameter values within the preset time period, and the environmental parameter value is any one of the temperature value or the humidity value; according to the magnitude relationship between the trend value at the current moment and the preset trend threshold, respectively determine the weight values of different moments within the preset time period relative to the current moment; use the weight values corresponding to different moments within the preset time period to perform weighted averaging on the environmental parameter values at different moments within the preset time period, and take the difference between the target value of the environmental parameter value and the weighted average result as the first adjustment amount information; adjust the operating parameter values of the environmental parameter control module of the test chamber according to the first adjustment amount information, so that the environmental parameter control module controls the environmental parameter values inside the test chamber.

[0007] In this way, the trend value of the environmental parameter value at the current moment is determined. According to the magnitude relationship between the trend value at the current moment and the preset trend threshold, the weight values of different moments within the preset time period before the current moment relative to the current moment are determined to obtain the first adjustment amount information. And the weight values of different moments are determined according to the trend value of the environmental parameter value, so that the first adjustment amount information can not only comprehensively consider the magnitude of the environmental parameter value within the preset time period, but also take into account the change trend of the environmental parameter value. By using the first adjustment amount information to adjust the operating parameter values of the environmental parameter control module of the test chamber, the operating parameter values of the environmental parameter control module can adapt to the change of the environmental parameter value, thereby realizing more accurate control of the environmental parameter value inside the test chamber.

[0008] Optionally, the trend value of the environmental parameter value at the current moment is determined by the following method: , where k is the trend value of the environmental parameter value at the current moment, n is the number of moments within the preset time period, and are respectively the environmental parameter values at the jth and j + 1th moments inside the test chamber within the preset time period, and are respectively the maximum and minimum values of the environmental parameter values inside the test chamber within the preset time period, and are respectively the timestamp information corresponding to the latest moment and the earliest moment within the preset time period.

[0009] In this way, by comparing the environmental parameter values at adjacent moments inside the test chamber within the preset time period, it can better reflect the actual adjustment speed of the environmental parameter values inside the test chamber within the preset time period. Therefore, the trend value of the environmental parameter value at the current moment can better characterize the change rate of the environmental parameter values within the preset time period.

[0010] Optionally, according to the magnitude relationship between the trend value at the current moment and the preset trend threshold, the weight values of different moments within the preset time period relative to the current moment are determined respectively, including: when the trend value at the current moment is greater than the preset trend threshold, according to the time interval between the current moment and the target moment, a weight value negatively correlated with the time interval is determined; the target moment is any moment within the preset time period; when the trend value at the current moment is less than or equal to the preset trend threshold, according to the ratio of the first standard deviation to the second standard deviation, the weight value of the target moment is determined; the first standard deviation is the standard deviation of the environmental parameter values within the time period composed of the other moments except the target moment within the preset time period, and the second standard deviation is the standard deviation of the environmental parameter values within the preset time period.

[0011] In this way, according to the magnitude relationship between the trend value at the current moment and the preset trend threshold, the weight values of different moments within the preset time period relative to the current moment can be adaptively set respectively, so as to use the weight values to perform weighted summation on the environmental parameter values of different moments within the preset time period.

[0012] Optionally, when the trend value at the current moment is greater than the preset trend threshold, according to the time interval between the current moment and the target moment, a weight value negatively correlated with the time interval is determined, including: taking the reciprocal of the time interval between the current moment and the target moment as the weight value corresponding to the target moment.

[0013] In this way, taking the reciprocal of the time interval between the current moment and the target moment as the weight value corresponding to the target moment can set a larger weight value for the historical moment closer to the current moment, so as to improve the contribution of the environmental parameter value closer to the current moment to the prediction process of the environmental parameter value of the future moment of the current moment.

[0014] Optionally, according to the first adjustment amount information, the operating parameter value of the environmental parameter control module of the test chamber is adjusted, including: according to the first adjustment amount information and the preset corresponding relationship, the second adjustment amount information is determined, and the preset corresponding relationship is used to represent the corresponding relationship between different first adjustment amount information and different second adjustment amounts; according to the second adjustment amount information and the operating parameter value of the environmental parameter control module at the current moment, the operating parameter value of the environmental parameter control module at the next moment of the current moment is determined.

[0015] In this way, since the first adjustment amount is determined according to the environmental parameter values inside the test chamber within a preset time period, the first adjustment amount can better match the adjustment amount required to adjust the environmental temperature value inside the test chamber. According to the first adjustment amount information and the preset corresponding relationship, the second adjustment amount information is determined, and based on the second adjustment amount information and the operating parameter values of the environmental parameter control module at the current moment, more accurate control of the environmental parameter values can be achieved, so as to better complete the performance test of the product to be tested inside the test chamber at different temperatures.

[0016] Optionally, when the environmental parameter value is a temperature value, the environmental parameter control module is a temperature adjustment module, and the operating parameter value includes the adjustment power for the temperature value inside the test chamber.

[0017] Optionally, when the environmental parameter value is a humidity value, the environmental parameter control module is a humidity adjustment module, and the operating parameter value includes the adjustment power for the humidity value inside the test chamber.

[0018] Optionally, the preset trend threshold is determined in the following manner: the trend values at different moments within the preset time period are determined respectively, and the maximum trend value and the minimum trend value are determined from the multiple trend values at different moments within the corresponding preset time period; the average value of the maximum trend value and the minimum trend value is used as the preset trend threshold.

[0019] In this way, since the trend value can reflect the change rate of the environmental parameter value within a period of time before a certain moment, using the average value of the maximum trend value and the minimum trend value as the preset trend threshold can adaptively determine a more suitable preset trend threshold in combination with the actual situation of the environmental parameter values inside the test chamber.

[0020] According to the second aspect of the embodiments of the present application, a fast temperature change test chamber intelligent temperature and humidity control system is provided, including: a processor and a memory, where the memory stores computer program instructions, and when the computer program instructions are executed by the processor, the steps of the fast temperature change test chamber intelligent temperature and humidity control method provided in the first aspect of the present application are implemented.

[0021] The technical solutions provided by the embodiments of the present application may include the following beneficial effects: determining the trend value of the environmental parameter value at the current moment, and determining the weight values of different moments within a preset time period before the current moment relative to the current moment according to the magnitude relationship between the trend value at the current moment and the preset trend threshold, so as to obtain the first adjustment amount information, and the weight values of different moments are determined according to the trend value of the environmental parameter value, enabling the first adjustment amount information to not only comprehensively consider the magnitude of the environmental parameter value within the preset time period, but also take into account the change trend of the environmental parameter value, and using the first adjustment amount information to adjust the operating parameter value of the environmental parameter control module of the test chamber, and the operating parameter value of the environmental parameter control module can adapt to the change of the environmental parameter value, thereby achieving more accurate control of the environmental parameter value in the test chamber.

[0022] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. Brief Description of the Drawings

[0023] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0024] Figure 1 is a flowchart of an intelligent temperature and humidity control method for a rapid temperature change test chamber shown according to an exemplary embodiment;

[0025] Figure 2 is a schematic structural diagram of an intelligent temperature and humidity control system for a rapid temperature change test chamber shown according to an exemplary embodiment. Detailed Description of the Embodiments

[0026] Here, the exemplary embodiments will be described in detail, and the examples are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application.

[0027] First, a brief introduction to the application scenario of the embodiments of the present application is given. In the application scenario of the present application, in order to test the performance and reliability of the product to be tested under rapid humidity or changing conditions, an environmental parameter control module can be used to realize the regulation of the environmental parameter value in the test chamber. For example, the environmental parameter value can be a temperature value or a humidity value. The temperature in the test chamber can be adjusted through the temperature adjustment module, and the humidity in the test chamber can be adjusted through the humidity adjustment module.

[0028] However, when regulating the temperature value or humidity value in the test chamber, it is mainly based on the temperature value or humidity value in the test chamber at the current moment, making it difficult to adapt to the change of the temperature value in the regulation of temperature or humidity.

[0029] For example, when heating the environment inside the test chamber and the temperature value has not reached the target temperature value, according to the temperature value of the environment inside the test chamber at the current moment, if the temperature is adjusted with a larger adjustment power, the temperature value may exceed the target temperature value; if the temperature is adjusted with a smaller adjustment power, it may take a longer adjustment time for the environmental temperature value inside the test chamber, affecting the test effect of the performance of the product under test under rapid temperature changes.

[0030] To address the above technical problems, an embodiment of the present application provides an intelligent temperature and humidity control method and system for a rapid temperature change test chamber. Figure 1 It is a flowchart of an intelligent temperature and humidity control method for a rapid temperature change test chamber shown according to an exemplary embodiment, as Figure 1 shown, and the method includes the following steps.

[0031] In step S101, obtain the environmental parameter values inside the test chamber within a preset time period before the current moment to determine the trend value of the environmental parameter values at the current moment.

[0032] The environmental parameter value is any one of the temperature value or the humidity value; at least one temperature sensor and at least one humidity sensor can be provided inside the test chamber, so as to periodically obtain the temperature value of the internal environment of the test chamber through the temperature sensor, and periodically obtain the humidity value of the internal environment of the test chamber through the humidity sensor.

[0033] The temperature adjustment module can be used to control the temperature value of the internal environment of the test chamber, such as heating or cooling the internal environment of the test chamber; the humidity adjustment module can be used to control the humidity value of the internal environment of the test chamber, such as humidifying or dehumidifying the internal environment of the test chamber.

[0034] The environmental parameter values inside the test chamber within a preset time period before the current moment can reflect the level of the environmental parameter values inside the test chamber within a certain period of time before the current moment, and can also reflect the change trend of the environmental parameter values inside the test chamber. For example, it can help determine the actual adjustment effect of the temperature adjustment module on the temperature value of the internal environment of the test chamber, or can help determine the actual adjustment effect of the humidity adjustment module on the humidity value of the internal environment of the test chamber.

[0035] The trend value is used to characterize the change rate of the environmental parameter value within the preset time period; the larger the trend value at the current moment, the greater the change rate of the environmental parameter value inside the test chamber within a period of time before the current moment, and the more obvious the adjustment effect of the environmental parameter control module on the environmental parameter value inside the test chamber in the past period of time.

[0036] On the contrary, the smaller the trend value at the current moment, the smaller the change rate of the environmental parameter value inside the test chamber during a period of time before the current moment, and the milder the adjustment effect of the environmental parameter control module on the environmental parameter value inside the test chamber during the past period of time.

[0037] The duration of the preset time period can be set according to actual needs. For example, the duration of the preset time period can be between 10 seconds and 20 seconds; for example, when the current moment is 10:00:00, the preset time period can be the time period from 09:59:50 to 10:00:00.

[0038] In one embodiment, the trend value of the environmental parameter value at the current moment is determined by the following method: , where k is the trend value of the environmental parameter value at the current moment, and n is the number of moments within the preset time period. And are respectively the environmental parameter values at the j-th and j + 1-th moments within the preset time period inside the test chamber. And are respectively the maximum and minimum values of the environmental parameter values inside the test chamber within the preset time period. And are respectively the timestamp information corresponding to the latest moment and the earliest moment within the preset time period.

[0039] Determining the trend value of the environmental parameter value at the current moment helps to predict the change of the environmental parameter value inside the test chamber in the future time period, so as to take corresponding preventive measures before the environmental parameter value exceeds the set range and maintain the continuity of the change of the environmental parameter value inside the test chamber.

[0040] When controlling the environmental parameter value inside the test chamber through the environmental parameter control module, for example, by increasing the temperature value inside the test chamber through the heating component, the temperature value inside the test chamber rises at a certain speed; or by increasing the humidity value inside the test chamber through the humidifying component, the humidity value inside the test chamber rises at a certain speed.

[0041] By determining the change amount of the environmental parameter value inside the test chamber between two adjacent moments, the change speed of the environmental parameter value inside the test chamber at a certain moment can be reflected. In the case of determining the adjustment direction of the environmental parameter value, the change speed of the environmental parameter value inside the test chamber at different moments within the preset time period can reflect the change speed of the environmental parameter value inside the test chamber within the preset time period.

[0042] The change rate of the environmental parameter values inside the test chamber within a preset time period can affect the environmental parameter values at the next moment inside the test chamber at the current moment. Therefore, by determining the trend value of the environmental parameter values at the current moment, it helps to more accurately adjust the environmental parameter values at different moments within a future time period inside the test chamber.

[0043] Since the adjustment directions of the environmental parameter values inside the test chamber are the same within the same time period, the difference between the maximum value and the minimum value among the environmental parameter values at different moments within the preset time period can reflect the adjustment amount of the environmental parameter values inside the test chamber within the preset time period.

[0044] The latest moment within the preset time period refers to the moment with the smallest time interval from the current moment within the preset time period; the earliest moment within the preset time period refers to the moment with the largest time interval from the current moment within the preset time period.

[0045] The difference between the timestamp information corresponding to the latest moment within the preset time period and the timestamp information corresponding to the earliest moment within the preset time period is equal to the duration of the preset time period; dividing the adjustment amount of the environmental parameter values inside the test chamber within the preset time period by the duration of the preset time period can reflect the overall adjustment rate of the environmental parameter values inside the test chamber within the preset time period.

[0046] In this way, comparing the environmental parameter values at adjacent moments inside the test chamber within the preset time period can better reflect the actual adjustment rate of the environmental parameter values inside the test chamber within the preset time period. Therefore, the trend value of the environmental parameter values at the current moment can better represent the change rate of the environmental parameter values within the preset time period.

[0047] In step S102, according to the magnitude relationship between the trend value at the current moment and the preset trend threshold, the weight values of different moments within the preset time period relative to the current moment are respectively determined.

[0048] When using the test chamber to conduct experiments on the performance and reliability of products under rapid temperature or humidity change conditions, corresponding temperature change curves or humidity change curves are usually specified to better implement the experiments on the performance or reliability of products at different temperatures.

[0049] Among them, the temperature change curve can include the corresponding relationship between different moments and different temperature values; the humidity change curve can include the corresponding relationship between different moments and different humidity values.

[0050] In order to match the actual environmental parameter values inside the test chamber at different times with the expected environmental parameter values, if the operating parameter values of the environmental parameter control module at the next moment are adjusted directly based on the environmental parameter values of the test chamber at the current moment, there is a lag in the adjustment process of the environmental parameter values, resulting in a low adjustment accuracy of the environmental parameter values. It is difficult to make the actual environmental parameter values inside the test chamber at different times match the expected environmental parameter values at different times.

[0051] Therefore, it is necessary to determine the weight values relative to the current moment for different times within a preset time period, so as to predict the environmental parameter values at future moments by using the weight values and environmental parameter values at different times within the preset time period, thereby more accurately realizing the adjustment of the environmental parameter values at future moments.

[0052] When the trend value at the current moment is greater than the preset trend threshold, it indicates that the adjustment speed of the environmental parameter values inside the test chamber is relatively fast within the preset time period before the current moment. If the environmental parameter control module continues to adjust the environmental parameter values according to the operating parameter values within the preset time period, there is a high probability that the change speed of the environmental parameter values inside the test chamber will continue to be relatively fast within the preset time period in the future time period after the current moment.

[0053] When the trend value at the current moment is less than or equal to the preset trend threshold, it indicates that the adjustment speed of the environmental parameter values inside the test chamber is relatively slow within the preset time period before the current moment. This relatively slow adjustment speed may be due to the fact that the environmental parameter values inside the test chamber have reached the environmental parameter values that match the operating parameter values of the environmental parameter control module.

[0054] If the environmental parameter control module continues to adjust the environmental parameter values according to the operating parameter values within the preset time period, there is a high probability that the change speed of the environmental parameter values inside the test chamber will continue to be the same as that within the preset time period in the future time period after the current moment.

[0055] Therefore, according to the magnitude relationship between the trend value at the current moment and the preset trend threshold, it can reflect the relationship between the actual adjustment speed of the environmental parameter values inside the test chamber and the preset adjustment speed, thereby allocating corresponding weight values for different times within the preset time period.

[0056] In one embodiment, the preset trend threshold is determined in the following manner: determine the trend values at different times within the preset time period respectively, and determine the maximum trend value and the minimum trend value from the multiple trend values at different times within the corresponding preset time period; take the average value of the maximum trend value and the minimum trend value as the preset trend threshold.

[0057] According to the determination method of the trend value at the current moment, the trend values at different moments within a preset time period can be determined respectively; through the trend values at different moments within the preset time period, the change rates of the environmental parameter values inside the test chamber at different moments within the preset time period can be respectively characterized.

[0058] In this way, since the trend value can reflect the change rate of the environmental parameter value within a period of time before a certain moment, taking the average value of the maximum trend value and the minimum trend value as the preset trend threshold can adaptively determine a more matching preset trend threshold in combination with the actual situation of the environmental parameter value inside the test chamber.

[0059] In one embodiment, according to the magnitude relationship between the trend value at the current moment and the preset trend threshold, the weight values of different moments within the preset time period relative to the current moment are determined respectively, including: when the trend value at the current moment is greater than the preset trend threshold, according to the time interval between the current moment and the target moment, a weight value negatively correlated with the time interval is determined; the target moment is any moment within the preset time period; when the trend value at the current moment is less than or equal to the preset trend threshold, according to the ratio of the first standard deviation to the second standard deviation, the weight value of the target moment is determined; the first standard deviation is the standard deviation of the environmental parameter values within the time period composed of other moments except the target moment within the preset time period, and the second standard deviation is the standard deviation of the environmental parameter values within the preset time period.

[0060] When the trend value at the current moment is greater than the preset trend threshold, it indicates that the actual adjustment rate of the environmental parameter value inside the test chamber within the preset time period is relatively large; compared with the historical moments with a longer time interval from the current moment, the environmental parameter values of the historical moments closer to the current moment have a greater impact on the environmental parameter value at the next moment of the current moment.

[0061] Therefore, when the trend value at the current moment is greater than the preset trend threshold, a weight value negatively correlated with the time interval can be determined according to the time interval between the current moment and the target moment, increasing the weights of other moments close to the current moment within the preset time period and decreasing the weights of other moments far from the current moment within the preset time period, so as to better predict the environmental parameter value at the next moment of the current moment inside the test chamber.

[0062] When the trend value at the current moment is less than or equal to the preset trend threshold, it indicates that the environmental temperature value inside the test chamber is relatively stable within the preset time period before the current moment; when the environmental parameter value inside the test chamber is relatively stable within the preset time period, the standard deviation of the environmental parameter values within the preset time period is relatively small.

[0063] The first standard deviation is the standard deviation of the environmental parameter values within a time period composed of other times except the target time within a preset time period, and the second standard deviation is the standard deviation of the environmental parameter values within the preset time period; when the environmental temperature value inside the test chamber is relatively stable within the preset time period, if the second standard deviation is greater than or equal to the first standard deviation, it indicates that the environmental parameter values within the time period composed of other times except the target time within the preset time period are more stable.

[0064] If the second standard deviation is greater than or equal to the first standard deviation, it indicates that the difference between the environmental parameter value at the target time and the overall environmental parameter values within the preset time period is relatively large, and a sudden abnormal event may have occurred in the test chamber. Such a sudden abnormal event may end quickly after it occurs. Therefore, the ratio between the first standard deviation and the second standard deviation helps to avoid the influence of the possible sudden abnormal event on the prediction result.

[0065] For example, during the heating process of the test chamber, it is abnormally opened, resulting in temperature loss, or during the refrigeration process of the test chamber, it is abnormally opened and the noise causes abnormal temperature rise, so that the temperature sensor detects a temperature value significantly different from the environmental temperature value of the test chamber, and after the test chamber is abnormally opened, it is quickly closed, and the temperature monitored by the temperature sensor returns to the environmental temperature value inside the test chamber.

[0066] When the trend value at the current time is less than or equal to the preset trend threshold, the weight value of the target time is determined according to the ratio of the first standard deviation to the second standard deviation; for example, the ratio of the first standard deviation to the second standard deviation can be normalized, and the ratios corresponding to different times within the preset time period are normalized to the range of 0 to 1, which is convenient for comparing the weight values of different times.

[0067] If the second standard deviation is less than the first standard deviation corresponding to the target time, it indicates that when the environmental parameter value at the target time is not considered, the standard deviation of the environmental parameter values within the time period composed of other times except the target time is larger. The environmental parameter value at the target time is a relatively stable environmental parameter value within the preset time period, and the environmental parameter value corresponding to the target time is more common among the multiple environmental parameter values within the preset time period. The target time has not had a significant impact on the stability of the environmental parameter values. Therefore, through the ratio between the first standard deviation and the second standard deviation that is less than the first standard deviation, a larger weight value can be assigned to the target time, and a higher weight value can be assigned to the environmental parameter values obtained by the sensors of the test chamber in a non-abnormal state.

[0068] To more intuitively show the determination process of the weight values of different times within the preset time period in the embodiments of the present application, the following takes an exemplary formula as an example to elaborate on the determination process of the weight values of different times within the preset time period: In the case of ; k is the trend value of the environmental parameter value at the current moment, is a preset trend threshold, is the weight value of the j-th moment relative to the current moment within a preset time period, and norm is a normalization processing function, is the timestamp information at the current moment, is the timestamp information of the j-th moment within a preset time period; in case, , is the standard deviation of the environmental parameter values within the time period composed of other moments except the j-th moment within a preset time period, is the standard deviation of the environmental parameter values within a preset time period.

[0069] To avoid the denominator being zero, in case, if the timestamp information of the j-th moment is relatively close to the timestamp information of the current moment, for example, the j-th moment is equal to the current moment, it can be set = 1.

[0070] In this way, according to the magnitude relationship between the trend value at the current moment and the preset trend threshold, the weight values relative to the current moment can be adaptively set for different moments within a preset time period, so as to use the weight values to perform weighted summation on the environmental parameter values at different moments within a preset time period.

[0071] In one embodiment, in the case where the trend value at the current moment is greater than the preset trend threshold, according to the time interval between the current moment and the target moment, a weight value negatively correlated with the time interval is determined, including: taking the reciprocal of the time interval between the current moment and the target moment as the weight value corresponding to the target moment.

[0072] In this way, taking the reciprocal of the time interval between the current moment and the target moment as the weight value corresponding to the target moment can set a larger weight value for the historical moment closer to the current moment, so as to increase the contribution of the environmental parameter value closer to the current moment to the prediction process of the environmental parameter value of the future moment of the current moment.

[0073] In step S103, the environmental parameter values at different moments within a preset time period are weighted and averaged by using the weight values corresponding to different moments within a preset time period, and the difference between the target value of the environmental parameter value and the weighted average result is used as the first adjustment amount information.

[0074] Weight-average the environmental parameter values at different times within a preset time period. Since the environmental temperature value at the next moment of the current moment is affected by the environmental temperature values within the preset time period, the obtained weighted-average result can reflect the environmental temperature value inside the test chamber at the next moment of the current moment, enabling prediction of the environmental temperature value at the next moment of the current moment, so that the environmental parameter control module can adapt to the change of the environmental temperature value inside the test chamber in advance and improve the regulation accuracy of the environmental temperature value inside the test chamber.

[0075] The target value of the environmental parameter value can refer to the environmental parameter value to be achieved at the next moment of the current moment. The target value of the environmental parameter value can be determined according to the pre-stored environmental parameter curve, and the environmental parameter curve can include the environmental parameter values inside the test chamber at different times.

[0076] For example, when the environmental parameter value is the temperature value, the environmental parameter curve can be the pre-stored temperature value curve; when the environmental parameter value is the humidity value, the environmental parameter value can be the pre-stored humidity value curve.

[0077] Take the difference between the target value of the environmental parameter value and the weighted-average result as the first adjustment amount information. If the first adjustment amount information is greater than 0, it indicates that there is a certain difference between the environmental parameter value that the inside of the test chamber will reach at the next moment and the target value. The difference between the environmental temperature value and the target value can be reduced by increasing the operating parameter value of the environmental parameter control module.

[0078] For example, when the environmental parameter value is the temperature value, if the environmental parameter control module of the test chamber is performing the heating task for the inside of the test chamber and the first adjustment amount information is greater than 0, it indicates that there is a certain difference between the environmental parameter value that the inside of the test chamber will reach at the next moment and the target value. The heating power for the inside environment of the test chamber can be increased to reduce the temperature difference between the environmental temperature value and the target value.

[0079] If the first adjustment amount information is less than 0, it indicates that the environmental temperature value that the inside of the test chamber will reach at the next moment will exceed the target value. The difference between the environmental temperature value and the target value can be reduced by decreasing the operating parameter value of the environmental parameter control module.

[0080] In step S104, adjust the operating parameter value of the environmental parameter control module of the test chamber according to the first adjustment amount information, so that the environmental parameter control module controls the environmental parameter value inside the test chamber.

[0081] The first adjustment amount information is used to characterize the expected change amount of the environmental parameter value when adjusting the environmental parameter value of the test chamber. For example, when heating the environment of the test chamber through the heating module, the expected increase amount of the environmental temperature value of the test chamber, or the expected decrease amount of the environmental temperature value of the test chamber; when expecting to adjust the environmental parameter value inside the test chamber, different expected change amounts of the environmental temperature value correspond to different adjustment amounts of the operating parameter value of the environmental parameter control module.

[0082] By actually testing or simulating and testing the operating parameter value of the environmental parameter control module in advance, it is possible to determine the adjustment amount that needs to be made to the operating parameter value of the environmental parameter control module in order to change the environmental temperature value under different actual environmental parameter values.

[0083] For example, when the environmental temperature value inside the test chamber is T 1 the power for heating the inside of the test chamber is P 1 In order to increase the environmental temperature value inside the test chamber by T 2 by actually testing or simulating and testing the heating power of the heating module in advance, it can be determined that when the heating power is increased by P 2 the environmental temperature value inside the test chamber can be increased from T 1 to T 1 +T 2 within a certain period of time.

[0084] In one embodiment, adjusting the operating parameter value of the environmental parameter control module of the test chamber according to the first adjustment amount information includes: determining second adjustment amount information according to the first adjustment amount information and a preset corresponding relationship, where the preset corresponding relationship is used to characterize the corresponding relationship between different first adjustment amount information and different second adjustment amounts; determining the operating parameter value of the environmental parameter control module at the next moment of the current moment according to the second adjustment amount information and the operating parameter value of the environmental parameter control module at the current moment.

[0085] The first adjustment amount is the expected adjustment amount of the environmental parameter value of the test chamber within a certain period of time. The first adjustment amount can be a positive number, a negative number, or 0; correspondingly, the second adjustment amount can be a positive number, a negative number, or 0; in order to make the change amount of the environmental parameter value of the test chamber actually reach the first adjustment amount within a certain period of time, the adjustment amount that needs to be made to the operating parameter value of the environmental parameter control module is the second adjustment amount.

[0086] By actually testing or simulating the operation of the environmental parameter control module under different environmental parameter values according to the operating parameter values, the corresponding relationship between different first adjustment amounts and different second adjustment amounts can be obtained. Based on the first adjustment amount information and the preset corresponding relationship, the second adjustment amount information can be determined.

[0087] According to the second adjustment amount information and the operating parameter values of the environmental parameter control module at the current moment, the operating parameter values of the environmental parameter control module at the next moment can be determined. For example, by adding the second adjustment amount information to the operating parameter values of the environmental parameter control module at the current moment, the operating parameter values of the environmental parameter control module at the next moment can be obtained.

[0088] In this way, since the first adjustment amount is determined based on the environmental parameter values inside the test chamber within a preset time period, the first adjustment amount can better match the adjustment amount required to adjust the environmental temperature value inside the test chamber. Based on the first adjustment amount information and the preset corresponding relationship, the second adjustment amount information is determined, and according to the second adjustment amount information and the operating parameter values of the environmental parameter control module at the current moment, more accurate control of the environmental parameter values can be achieved, so as to better complete the performance test of the product to be tested in the test chamber at different temperatures.

[0089] Through the intelligent temperature and humidity control method for the rapid temperature change test chamber provided by the embodiments of the present application, the trend value of the environmental parameter value at the current moment is determined. According to the magnitude relationship between the trend value at the current moment and the preset trend threshold, the weight values of different moments within a preset time period before the current moment relative to the current moment are determined to obtain the first adjustment amount information, and the weight values of different moments are determined according to the trend value of the environmental parameter value, so that the first adjustment amount information can not only comprehensively consider the magnitude of the environmental parameter value within the preset time period, but also take into account the change trend of the environmental parameter value. The operating parameter values of the environmental parameter control module of the test chamber are adjusted using the first adjustment amount information, and the operating parameter values of the environmental parameter control module can adapt to the change of the environmental parameter value, thereby achieving more accurate control of the environmental parameter values inside the test chamber.

[0090] In one embodiment, when the environmental parameter value is a temperature value, the environmental parameter control module is a temperature adjustment module, and the operating parameter values include the adjustment power for the temperature value inside the test chamber.

[0091] The temperature adjustment module can be used to control the temperature value of the internal environment of the test chamber. For example, when testing the performance change of the product to be tested inside the test chamber during the temperature rise process, the temperature adjustment module can be heating components such as resistance wire heaters and electric heating rods. By heating the air inside the test chamber through the temperature adjustment module, the temperature value of the internal environment of the test chamber can be increased.

[0092] For another example, when testing the performance change of a product to be tested in a test chamber during the temperature drop process, the temperature adjustment module can be a compressor. The compressor compresses the refrigerant to increase the pressure and temperature of the refrigerant; the refrigerant releases heat in the condenser and changes from a gaseous state to a liquid state; the refrigerant absorbs heat in the evaporator and changes from a liquid state to a gaseous state, thereby reducing the temperature inside the test chamber; through the expansion valve in the compressor, the flow rate of the refrigerant can be adjusted, thereby adjusting the refrigeration effect on the temperature inside the test chamber; or the temperature adjustment module can also absorb heat by expanding certain gases (such as nitrogen, helium, etc.) to achieve the refrigeration effect inside the test chamber. The specific adjustment or means of the temperature value inside the test chamber in the embodiments of the present application are not limited.

[0093] In one embodiment, when the environmental parameter value is a humidity value, the environmental parameter control module is a humidity adjustment module, and the operating parameter value includes the adjustment power for the humidity value inside the test chamber.

[0094] The control of the humidity value inside the test chamber can be achieved through a humidity adjustment component; for example, in order to increase the humidity value inside the test chamber, water can be atomized by using a high-pressure pump and sprayed into the test chamber through a nozzle, and the humidity inside the test chamber is increased as the water mist quickly evaporates in the air; or, ultrasonic vibration can be used to break water into water mist particles, and the water mist can be blown into the test chamber by a fan, thereby increasing the humidity value inside the test chamber.

[0095] For another example, in order to reduce the humidity value inside the test chamber, the air inside the test chamber can be compressed to condense the moisture in the air, and the condensed moisture can be discharged to the outside of the test chamber through a separator; or, the humidity value of the internal environment of the test chamber can be reduced by means such as a dehumidification wheel or electroosmotic dehumidification; the specific adjustment or means of the humidity value inside the test chamber in the embodiments of the present application are not limited.

[0096] Figure 2 It is a schematic structural diagram of an intelligent temperature and humidity control system 1000 for a rapid temperature change test chamber shown according to an exemplary embodiment. Refer to Figure 2 , the intelligent temperature and humidity control system 1000 for the rapid temperature change test chamber includes: a processor 1100 and a memory 1200. The memory 1200 stores computer program instructions, and when the computer program instructions are executed by the processor 1100, all or part of the steps of the intelligent temperature and humidity control method for the rapid temperature change test chamber in the present application are implemented.

[0097] It should be understood that unless otherwise specifically stated, the features of various embodiments of the present application described herein can be combined with each other.

[0098] Although terms such as "first", "second", and "third" may be used herein to describe various components, parts, regions, layers, or sections, these components, parts, regions, layers, or sections are not limited to these terms. Instead, these terms are only used to distinguish one component, part, region, layer, or section from another. Thus, the first component, part, region, layer, or section mentioned in the examples described herein may also be referred to as the second component, part, region, layer, or section without departing from the teachings of the respective examples.

[0099] In addition, 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 quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description herein, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0100] Furthermore, the word "exemplary" is used herein to mean serving as an example, instance, or illustration. Any aspect or design described herein as "exemplary" is not necessarily to be construed as being advantageous as compared to other aspects or designs. Instead, the use of the word exemplary is intended to present concepts in a concrete manner. As used herein, the term "or" is intended to mean an inclusive "or" rather than an exclusive "or".

[0101] Likewise, although the present application has been shown and described with respect to one or more implementations, equivalent variations and modifications will occur to those skilled in the art upon reading and understanding the specification and drawings. With particular reference to the various functions performed by the above-described components (e.g., elements, resources, etc.), unless otherwise indicated, the terms used to describe such components are intended to correspond to any component (functionally equivalent) that performs the specific function of the described component, even if not structurally equivalent to the disclosed structure.

[0102] In addition, although specific features of the present application may have been disclosed with respect to only one of several implementations, such features may, as may be desired and advantageous for any given or particular application, be combined with one or more other features of other implementations.

[0103] Other embodiments of the present application will be readily apparent to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. The present application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of the present application and include known common knowledge or conventional technical means in the technical field not disclosed herein. The specification and examples are to be considered exemplary only.

[0104] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope.

Claims

1. A method for intelligent temperature and humidity control of a rapid temperature change test chamber, characterized in that: include: Obtain the environmental parameter values ​​inside the test chamber within a preset time period before the current moment to determine the trend value of the environmental parameter value at the current moment; The trend value is used to characterize the rate of change of the environmental parameter value within a preset time period, and the environmental parameter value is any one of the temperature value or the humidity value; According to the relationship between the trend value at the current moment and the preset trend threshold, the weight values ​​of different moments in the preset time period relative to the current moment are determined respectively; Using the weight values ​​corresponding to different moments in the preset time period, weighted averaging the environmental parameter values ​​at different moments in the preset time period, and taking the difference between the target value of the environmental parameter value and the weighted average result as the first adjustment amount information; Adjusting the operating parameter value of the environmental parameter control module of the test box according to the first adjustment amount information, so that the environmental parameter control module controls the environmental parameter value inside the test box; The trend value of the environmental parameter value at the current moment is determined in the following way: , k is the trend value of the environmental parameter value at the current moment, n is the number of moments in the preset time period, as well as are the environmental parameter values ​​of the interior of the test chamber at the jth and j+1th moments within the preset time period, as well as They are the maximum and minimum values ​​of the environmental parameters inside the test chamber within the preset time period. as well as The timestamp information corresponding to the latest time and the earliest time in the preset time period respectively; According to the relationship between the trend value at the current moment and the preset trend threshold, the weight values ​​of different moments in the preset time period relative to the current moment are determined respectively, including: When the trend value at the current moment is greater than the preset trend threshold, a weight value negatively correlated with the time interval is determined according to the time interval between the current moment and the target moment; the target moment is any moment within the preset time period; When the trend value at the current moment is less than or equal to the preset trend threshold, the weight value of the target moment is determined according to the ratio of the first standard deviation to the second standard deviation; the first standard deviation is the standard deviation of the environmental parameter value in the time period composed of other moments in the preset time period except the target moment, and the second standard deviation is the standard deviation of the environmental parameter value in the preset time period; When the trend value at the current moment is greater than the preset trend threshold, a weight value negatively correlated with the time interval is determined according to the time interval between the current moment and the target moment, including: The reciprocal of the time interval between the current time and the target time is used as the weight value corresponding to the target time; Adjusting the operating parameter value of the environmental parameter control module of the test box according to the first adjustment amount information includes: Determine the second adjustment amount information according to the first adjustment amount information and a preset corresponding relationship, wherein the preset corresponding relationship is used to characterize the corresponding relationship between different first adjustment amount information and different second adjustment amounts; Determining the operating parameter value of the environmental parameter control module at the next moment after the current moment according to the second adjustment amount information and the operating parameter value of the environmental parameter control module at the current moment; The preset trend threshold is determined in the following way: Determine the trend values ​​at different times within the preset time period respectively, and determine the maximum trend value and the minimum trend value from the multiple trend values ​​at different times within the corresponding preset time period; The average value of the maximum trend value and the minimum trend value is used as the preset trend threshold.

2. The intelligent temperature and humidity control method for a rapid temperature change test chamber according to claim 1 is characterized in that: In the case where the environmental parameter value is a temperature value, the environmental parameter control module is a temperature regulating module, and the operating parameter value includes a regulating power for the temperature value inside the test box.

3. The intelligent temperature and humidity control method for a rapid temperature change test chamber according to claim 1 is characterized in that: In the case where the environmental parameter value is a humidity value, the environmental parameter control module is a humidity adjustment module, and the operating parameter value includes an adjustment power for the humidity value inside the test box.

4. An intelligent temperature and humidity control system for a rapid temperature change test chamber, characterized in that: include: A processor and a memory, wherein the memory stores computer program instructions, and when the computer program instructions are executed by the processor, the intelligent temperature and humidity control method for a fast temperature change test chamber according to any one of claims 1 to 3 is implemented.

Images