HAST equipment intelligent cooling method and system based on relay dynamic control and medium

Abstract

The invention provides an intelligent cooling method and system for HAST equipment based on relay dynamic control and a medium, data in a collection box are detected in real time through temperature, humidity and pressure sensors, the switching logic of a heating relay and a humidifying relay is dynamically adjusted in combination with a set target value, the pressure relief control logic is linked, and multi-parameter collaborative decision is achieved; based on the real-time data and a preset rule, a rapid cooling mode, a slow cooling mode or a moisturizing cooling mode is automatically selected; a control parameter set is defined for different cooling modes through a preset mapping table, and parameter initialization and execution mechanism state standardization are achieved; a PID algorithm is introduced to adjust temperature deviation, a pressure grading pressure relief strategy is combined, and emergency shutdown is triggered during overtemperature and overpressure; through dynamic and intelligent control logic, the temperature and humidity adjusting precision, the pressure stability and the sample protection capability are remarkably improved, and meanwhile, the equipment abnormal risk and the test data distortion probability are reduced.

Description

Technical Field

[0001] The present invention relates to the field of HAST equipment, and more particularly to an intelligent cooling method, system and medium for HAST equipment based on dynamic control of relays. Background Art

[0002] Highly accelerated stress testing (HAST) equipment is widely used in reliability verification of electronic components, polymer materials and other products. It simulates extreme working conditions through high temperature, high humidity and high pressure environments to accelerate the exposure of potential defects. However, traditional HAST equipment has significant technical bottlenecks in the environmental control and cooling process; existing equipment mostly uses a single threshold trigger mechanism and lacks comprehensive analysis of multiple parameters such as temperature, humidity, and pressure. For example, when the temperature rises suddenly, the relay response lags, resulting in over-temperature risks; humidity adjustment is not linked to pressure monitoring, which can easily cause box overpressure and threaten equipment safety. Traditional cooling solutions rely on fixed strategies and cannot be dynamically adjusted according to sample characteristics or test requirements. In addition, single sensor data is easily interfered with, and the control parameters lack the ability to be dynamically optimized, resulting in large fluctuations in temperature and humidity, pressure out of control and other problems. The credibility of the test data is reduced, and frequent repeated tests are required to verify the results.

[0003] Therefore, there is an urgent need for an intelligent cooling technology for HAST equipment based on dynamic control of relays to improve test efficiency, data reliability and equipment safety. Summary of the Invention

[0004] In view of the above problems, the purpose of the present invention is to provide a HAST equipment intelligent cooling method, system and medium based on relay dynamic control. Through the real-time acquisition of temperature, humidity and pressure data by multiple sensors, the relay action logic is dynamically adjusted in combination with the target parameters to achieve multi-condition linkage control. An intelligent cooling mode self-adaptive mechanism is introduced to automatically select fast, slow or moisturizing cooling strategies according to the real-time environmental status and sample characteristics to avoid sample damage. A mapping table is used to standardize control parameters, and the PID algorithm and graded pressure relief logic are combined to improve control accuracy. The present invention effectively solves the core problems of traditional HAST equipment, such as response lag, malfunction and poor sample adaptability, and significantly improves test efficiency, data reliability and equipment safety.

[0005] A first aspect of the present invention provides a HAST equipment intelligent cooling method based on relay dynamic control, the method comprising:

[0006] Get the cooling control instructions issued by HMI;

[0007] obtaining first temperature information and first humidity information according to the cooling control instruction;

[0008] collecting second temperature information, second humidity information, and second pressure information based on a preset sensor;

[0009] determining a cooling mode according to the second temperature information, the second humidity information, and the second pressure information;

[0010] Based on a preset mapping table, determining a control parameter set and initializing control parameters according to the cooling mode;

[0011] adjusting a switching control parameter of the heating relay according to a difference between the second temperature information and the first temperature information;

[0012] adjusting a switching control parameter of a humidifying relay according to a difference between the second humidity information and the first humidity information;

[0013] If the second pressure information exceeds a preset pressure threshold, the control parameters are adjusted according to a preset pressure relief control logic.

[0014] In this solution, the cooling mode is determined according to the second temperature information, the second humidity information, and the second pressure information, specifically:

[0015] obtaining first temperature difference information according to a difference between the second temperature information and the first temperature information;

[0016] If the first temperature difference information exceeds a preset rapid cooling threshold and the second pressure information is lower than a preset safety pressure threshold, it is determined to be a rapid cooling mode;

[0017] If the first temperature difference information is lower than the preset slow cooling threshold and the second humidity information is lower than the first humidity information, it is determined to be the moisturizing cooling mode;

[0018] Based on the safety pressure threshold, determining a first pressure threshold;

[0019] If the second pressure information is higher than the first pressure threshold, it is determined to be a slow cooling mode;

[0020] Based on the set priority order, a cooling mode is selected.

[0021] In this solution, the control parameter set and the initialization control parameters are determined based on the preset mapping table according to the cooling mode, specifically:

[0022] When the rapid cooling mode is determined, the control parameter set is the exhaust valve fully open parameter, the fan is the first level speed parameter and the heating relay is closed;

[0023] When the moisturizing cooling mode is determined, the control parameter set is that the exhaust valve is set to the minimum opening parameter, the fan is turned off, and the humidification relay is turned on;

[0024] When the slow cooling mode is determined, the control parameter set is that the exhaust valve is set to the first opening parameter and the fan is set to the second speed parameter;

[0025] According to the selected cooling mode, the corresponding control parameter set is loaded from the mapping table and the actuator state is initialized.

[0026] In this solution, the switching control parameters of the heating relay are adjusted according to the difference between the second temperature information and the first temperature information, specifically:

[0027] Calculating a difference between the second temperature information and the first temperature information to obtain first temperature difference information;

[0028] If the first temperature difference information exceeds a preset first temperature difference threshold, a heating relay closing instruction is generated and the over-temperature duration is recorded;

[0029] If the first temperature difference information is lower than a preset second temperature difference threshold, a heating relay on instruction is generated, and the fan speed parameter is adjusted according to the first temperature difference information based on a preset PID control algorithm;

[0030] When the over-temperature duration exceeds a preset over-temperature time threshold, the temperature abnormality mechanism is triggered, the heating relay is forcibly closed and the backup heat dissipation channel is started.

[0031] In this solution, the switching control parameters of the humidification relay are adjusted according to the difference between the second humidity information and the first humidity information, specifically:

[0032] Calculating a difference between the second humidity information and the first humidity information to obtain first humidity difference information;

[0033] If the first humidity difference is lower than a preset first humidity threshold, starting the humidification relay;

[0034] If the first humidity difference is higher than a preset second humidity threshold, turning off the humidification relay;

[0035] If the first humidity difference is higher than a preset third humidity threshold, the humidification relay is forcibly closed and the fan is started for dehumidification.

[0036] In this solution, if the second pressure information exceeds a preset pressure threshold, the control parameters are adjusted according to a preset pressure relief control logic, specifically:

[0037] Determining a first pressure threshold and a second pressure threshold based on a preset percentage threshold and according to the first pressure information;

[0038] If the second pressure information exceeds the first pressure threshold, the exhaust valve opening is gradually increased according to a preset step;

[0039] If the second pressure information exceeds the second pressure threshold, the exhaust valve opening is set to the maximum, and the heating relay and the humidifying relay are turned off.

[0040] A second aspect of the present invention provides a HAST equipment intelligent cooling system based on relay dynamic control, including a HAST equipment intelligent cooling method program based on relay dynamic control, wherein the HAST equipment intelligent cooling method program based on relay dynamic control, when executed by the processor, implements the following steps:

[0041] Get the cooling control instructions issued by HMI;

[0042] obtaining first temperature information and first humidity information according to the cooling control instruction;

[0043] collecting second temperature information, second humidity information, and second pressure information based on a preset sensor;

[0044] determining a cooling mode according to the second temperature information, the second humidity information, and the second pressure information;

[0045] Based on a preset mapping table, determining a control parameter set and initializing control parameters according to the cooling mode;

[0046] adjusting a switching control parameter of the heating relay according to a difference between the second temperature information and the first temperature information;

[0047] adjusting a switching control parameter of a humidifying relay according to a difference between the second humidity information and the first humidity information;

[0048] If the second pressure information exceeds a preset pressure threshold, the control parameters are adjusted according to a preset pressure relief control logic.

[0049] In this solution, the cooling mode is determined according to the second temperature information, the second humidity information, and the second pressure information, specifically:

[0050] obtaining first temperature difference information according to a difference between the second temperature information and the first temperature information;

[0051] If the first temperature difference information exceeds a preset rapid cooling threshold and the second pressure information is lower than a preset safety pressure threshold, it is determined to be a rapid cooling mode;

[0052] If the first temperature difference information is lower than the preset slow cooling threshold and the second humidity information is lower than the first humidity information, it is determined to be the moisturizing cooling mode;

[0053] Based on the safety pressure threshold, determining a first pressure threshold;

[0054] If the second pressure information is higher than the first pressure threshold, it is determined to be a slow cooling mode;

[0055] Based on the set priority order, a cooling mode is selected.

[0056] In this solution, the control parameter set and the initialization control parameters are determined based on the preset mapping table according to the cooling mode, specifically:

[0057] When the rapid cooling mode is determined, the control parameter set is the exhaust valve fully open parameter, the fan is the first level speed parameter and the heating relay is closed;

[0058] When the moisturizing cooling mode is determined, the control parameter set is that the exhaust valve is set to the minimum opening parameter, the fan is turned off, and the humidification relay is turned on;

[0059] When the slow cooling mode is determined, the control parameter set is that the exhaust valve is set to the first opening parameter and the fan is set to the second speed parameter;

[0060] According to the selected cooling mode, the corresponding control parameter set is loaded from the mapping table and the actuator state is initialized.

[0061] The third aspect of the present invention provides a computer-readable storage medium, which includes a program for an intelligent cooling method for HAST equipment based on dynamic control of relays. When the program for an intelligent cooling method for HAST equipment based on dynamic control of relays is executed by a processor, the steps of the intelligent cooling method for HAST equipment based on dynamic control of relays as described in any one of the above items are implemented.

[0062] The present invention provides an intelligent cooling method, system and medium for HAST equipment based on dynamic control of relays. The method detects data in the collection box in real time through temperature, humidity and pressure sensors, dynamically adjusts the switching logic of the heating relay and the humidifying relay in combination with the set target value, and links the pressure relief control logic to achieve multi-parameter collaborative decision-making; based on real-time data and preset rules, the method automatically selects fast cooling, slow cooling or moisturizing cooling mode; defines control parameter sets for different cooling modes through preset mapping tables, and achieves parameter initialization and actuator state standardization; introduces a PID algorithm to adjust temperature deviation, combines with a pressure graded pressure relief strategy, and triggers an emergency shutdown in the event of overtemperature or overpressure; through dynamic and intelligent control logic, significantly improves the temperature and humidity adjustment accuracy, pressure stability and sample protection capability, while reducing the risk of equipment abnormality and the probability of test data distortion. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope.

[0064] Figure 1 A flow chart of an intelligent cooling method for HAST equipment based on dynamic control of relays according to the present invention is shown;

[0065] Figure 2 A cooling mode determination flow chart provided by an embodiment of the present invention is shown;

[0066] Figure 3 A flow chart of determining a control parameter set provided by an embodiment of the present invention is shown;

[0067] Figure 4 The block diagram of the intelligent cooling system for HAST equipment based on dynamic control of relays of the present invention is shown. DETAILED DESCRIPTION

[0068] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0069] Unless otherwise defined, all terms (including technical and scientific terms) used in the embodiments of the present invention have the same meaning as commonly understood by those skilled in the art to which the present invention belongs. It should also be understood that terms such as those defined in common dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined in this manner in the embodiments of the present invention.

[0070] The terms "first," "second," and similar words used in the embodiments of the present invention do not indicate any order, quantity, or importance, but are only used to distinguish different components. Terms such as "a," "an," or "the" do not indicate a limit on quantity, but rather indicate the presence of at least one. Similarly, terms such as "include," "comprise," and "comprising" mean that the elements or objects preceding the term include the elements or objects listed after the term and their equivalents, without excluding other elements or objects.

[0071] "Connected" or "connected" and similar terms are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The preceding or subsequent steps of the methods of the embodiments of the present invention do not necessarily need to be performed in exact order. Instead, various steps may be performed in reverse order or simultaneously. Furthermore, other operations may be added to these processes, or one or more steps may be removed from these processes.

[0072] In addition, the functional modules in the various embodiments of the present invention may be integrated together to form an independent part, or each module may exist independently, or two or more modules may be integrated to form an independent part.

[0073] Figure 1 The flowchart of the intelligent cooling method of HAST equipment based on dynamic control of relays of the present invention is shown.

[0074] like Figure 1 As shown, the first aspect of the present invention discloses an intelligent cooling method for HAST equipment based on dynamic control of relays, the method comprising:

[0075] S102, obtaining a cooling control instruction issued by the HMI;

[0076] S104, obtaining first temperature information, first humidity information, and first pressure information according to the cooling control instruction;

[0077] S106, collecting second temperature information, second humidity information, and second pressure information based on a preset sensor;

[0078] S108, determining a cooling mode according to the second temperature information, the second humidity information, and the second pressure information;

[0079] S110, determining a control parameter set and initializing control parameters according to the cooling mode based on a preset mapping table;

[0080] S112, adjusting a switching control parameter of a heating relay according to a difference between the second temperature information and the first temperature information;

[0081] S114, adjusting a switching control parameter of a humidifying relay according to a difference between the second humidity information and the first humidity information;

[0082] S116: If the second pressure information exceeds a preset pressure threshold, adjust the control parameters according to a preset pressure relief control logic.

[0083] It should be noted that the first temperature information is the target temperature value of the HAST device; the first humidity information is the target humidity value of the HAST device; the first pressure information is the target pressure value of the HAST device; the second temperature information is the real-time measured temperature value of the HAST device; the second humidity information is the real-time measured humidity value of the HAST device; and the second pressure information is the real-time measured pressure value of the HAST device.

[0084] In this embodiment, first, the user inputs the target temperature, target humidity and maximum allowable pressure through the HMI interface, or calls a preset parameter template to generate a cooling task instruction. For example, the user inputs cooling to 100°C at 85% RH and a maximum allowable pressure of 0.3 MPa through the HMI interface. After receiving the instruction, the main controller parses it into executable cooling task parameters and extracts the target temperature, target humidity and target pressure. Secondly, as an implementation method, a PT100 is used as a temperature sensor to measure the temperature value in the collection box in real time, a humidity probe or a humidifying bucket temperature value is used to convert the humidity value in the collection box in real time, and a SMCISE30A is used as a pressure sensor to measure the pressure value in the collection box in real time. Based on the preset measurement and acquisition frequency, the temperature, humidity and pressure values ​​are measured in real time and stored in the memory. Based on the preset cooling mode rules, the difference between the real-time temperature, humidity and pressure data and the target value is comprehensively considered to enter the corresponding cooling mode, wherein the cooling mode includes a fast cooling mode, a moisturizing cooling mode and a slow cooling mode. As a real-time method, if the real-time temperature is much higher than the target temperature and the pressure is safe, it enters rapid cooling; if the pressure is close to the upper limit or the sample is sensitive, it enters slow cooling; if high humidity needs to be maintained, moisturizing cooling is selected; if the conditions of multiple modes are met at the same time, the cooling mode is selected according to the preset priority order. Then, according to the selected cooling mode, the corresponding control parameter set is loaded from the preset mapping table, where the control parameters include but are not limited to the exhaust valve opening, fan speed, heating / humidification relay action threshold, etc., and the actuator state is initialized based on the control parameter set. Finally, for temperature control, the switching frequency of the heating relay is dynamically adjusted through the PID algorithm according to the difference between the real-time temperature and the target; for humidity control, the working time of the humidification relay is adjusted according to the difference between the real-time humidity and the target humidity; for pressure control, the opening of the exhaust valve is adjusted according to the relationship between the real-time pressure value and the set threshold. This application avoids the response lag or malfunction caused by the traditional single threshold trigger through multi-parameter linkage control; and adopts a dynamic adjustment mechanism to improve the accuracy and stability of temperature and humidity control.

[0085] Figure 2 A cooling mode determination flow chart provided by an embodiment of the present invention is shown.

[0086] According to an embodiment of the present invention, Figure 2As shown, the cooling mode is determined according to the second temperature information, the second humidity information and the second pressure information, specifically:

[0087] S202, obtaining first temperature difference information according to a difference between the second temperature information and the first temperature information;

[0088] S204: If the first temperature difference information exceeds a preset rapid cooling threshold and the second pressure information is lower than a preset safety pressure threshold, a rapid cooling mode is determined;

[0089] S206: If the first temperature difference information is lower than a preset slow cooling threshold and the second humidity information is lower than the first humidity information, it is determined to be a moisturizing cooling mode;

[0090] S208, determining a first pressure threshold based on the safety pressure threshold;

[0091] S210: If the second pressure information is higher than the first pressure threshold, determine that the slow cooling mode is in operation;

[0092] S212: Select a cooling mode based on the set priority order.

[0093] It should be noted that, as an implementation method, +20% of the target temperature is used as the rapid cooling threshold, +5% of the target temperature is used as the slow cooling threshold, and 80% of the target pressure value is used as the first pressure threshold. Taking the target temperature of 100°C, the target pressure value of 0.3MPa, and the target humidity of 85%RH as an example, the rapid cooling threshold is 20°C, the slow cooling threshold is 5°C, and the first pressure threshold is 0.24MPa. When the real-time temperature is higher than the target temperature, if the temperature difference between the real-time temperature and the target temperature exceeds 20°C, and the real-time pressure value is lower than 0.3MPa, it is determined to be in rapid cooling mode; if the temperature difference between the real-time temperature and the target temperature is lower than 5°C, and the real-time humidity value is lower than 85%RH, it is determined to be in moisturizing cooling mode; if the real-time pressure value exceeds 0.24MPa or the tested component is a calibrated sensitive component, it enters slow cooling mode. When conditions for multiple modes are met simultaneously, such as high temperature and high pressure, the cooling mode is selected based on a user-defined priority. In one embodiment, the priority may be fast cooling mode > moisturizing cooling mode > slow cooling mode. This embodiment reduces the risk of misjudgment by regularizing the mode decision logic and employs a priority mechanism to ensure that emergency conditions are handled first.

[0094] Figure 3 A flow chart of determining a control parameter set provided by an embodiment of the present invention is shown.

[0095] According to an embodiment of the present invention, Figure 3As shown, based on the preset mapping table, the control parameter set and the initialization control parameters are determined according to the cooling mode, specifically:

[0096] S302, when it is determined that the rapid cooling mode is in operation, the control parameter set is the exhaust valve fully open parameter, the fan is at the first level speed parameter, and the heating relay is closed;

[0097] S304, when it is determined that the moisturizing cooling mode is in operation, the control parameter set is that the exhaust valve is set to the minimum opening parameter, the fan is turned off, and the humidification relay is turned on;

[0098] S306, when it is determined that the slow cooling mode is in operation, the control parameter set is that the exhaust valve is set to the first opening parameter and the fan is set to the second speed parameter;

[0099] S308 , according to the selected cooling mode, load the corresponding control parameter set from the mapping table and initialize the actuator state.

[0100] It should be noted that, as an embodiment, when in cooling mode, the control parameter set is: exhaust valve opening 100%, fan speed 5000RPM, heating relay off; when in moisturizing cooling mode, the control parameter set is: exhaust valve opening 10%, fan off, humidification relay on; when in slow cooling mode, the control parameter set is: exhaust valve opening 30%, fan speed 3000RPM. Based on the selected cooling mode, the parameters are read from the mapping table and sent to the actuator. This embodiment determines the initial state of each actuator based on the set control parameter set, avoids sudden changes in the actuator's movement, and improves the consistency and stability of the control.

[0101] According to an embodiment of the present invention, adjusting the switching control parameter of the heating relay according to the difference between the second temperature information and the first temperature information is specifically:

[0102] Calculating a difference between the second temperature information and the first temperature information to obtain first temperature difference information;

[0103] If the first temperature difference information exceeds a preset first temperature difference threshold, a heating relay closing instruction is generated and the over-temperature duration is recorded;

[0104] If the first temperature difference information is lower than a preset second temperature difference threshold, a heating relay on instruction is generated, and the fan speed parameter is adjusted according to the first temperature difference information based on a preset PID control algorithm;

[0105] When the over-temperature duration exceeds a preset over-temperature time threshold, the temperature abnormality mechanism is triggered, the heating relay is forcibly closed and the backup heat dissipation channel is started.

[0106] It should be noted that this embodiment provides a temperature control logic. The difference between the real-time temperature Tm and the target temperature Tt is calculated to obtain the first temperature difference information ΔT; wherein, ΔT = Tm-Tt. According to the components tested by HAST, the temperature difference threshold is determined. As an implementation method, if the first temperature difference information exceeds +2°C, a heating relay shutdown instruction is generated, and the over-temperature duration is recorded; if the first temperature difference information is lower than -2°C, a heating relay start instruction is generated, and the fan speed parameter is adjusted according to the first temperature difference information and the preset PID algorithm. In addition, by recording the over-temperature duration, when the over-temperature duration exceeds the set over-temperature time threshold, the temperature anomaly mechanism is triggered, the heating relay is forcibly closed, and the backup heat dissipation channel is started, for example, the backup heat dissipation fan is started. This embodiment uses the PID algorithm to improve the temperature control response speed, and the over-temperature protection mechanism prevents the equipment from being damaged by overheating.

[0107] According to an embodiment of the present invention, adjusting the switching control parameters of the humidification relay according to the difference between the second humidity information and the first humidity information is specifically:

[0108] Calculating a difference between the second humidity information and the first humidity information to obtain first humidity difference information;

[0109] If the first humidity difference is lower than a preset first humidity threshold, starting the humidification relay;

[0110] If the first humidity difference is higher than a preset second humidity threshold, turning off the humidification relay;

[0111] If the first humidity difference is higher than a preset third humidity threshold, the humidification relay is forcibly closed and the fan is started for dehumidification.

[0112] It should be noted that this embodiment provides a humidity control logic. The difference between the real-time temperature Hm and the target temperature Ht is calculated to obtain first humidity difference information ΔH; where ΔH = Hm - Ht. As an implementation, if the first humidity difference information is lower than -5% RH, the humidification relay is activated to increase the humidity within the collection box; if the first humidity difference information is higher than +2% RH, the humidification relay is turned off, stopping the humidification operation; if the first humidity difference information is higher than +5% RH, the humidification relay is turned off, and the fan dehumidification is activated according to the set dehumidification time, using a forced dehumidification mechanism to prevent humidity overshoot.

[0113] According to an embodiment of the present invention, if the second pressure information exceeds a preset pressure threshold, the control parameter is adjusted according to a preset pressure relief control logic, specifically:

[0114] Determining a first pressure threshold and a second pressure threshold based on a preset percentage threshold and according to the first pressure information;

[0115] If the second pressure information exceeds the first pressure threshold, the exhaust valve opening is gradually increased according to a preset step;

[0116] If the second pressure information exceeds the second pressure threshold, the exhaust valve opening is set to the maximum, and the heating relay and the humidifying relay are turned off.

[0117] It should be noted that this embodiment provides a pressure control logic. Take the target pressure value of 0.3MPa as an example. As a real-time method, 80% of the target pressure value is used as the first pressure threshold, and 110% of the target pressure value is used as the second pressure threshold; that is, the first pressure threshold is 0.24MPa, and the second pressure threshold is 0.33MPa. When the real-time pressure value exceeds 0.24MPa, the exhaust valve opening is gradually increased according to the set step, for example, the opening is increased by 10% every 5 seconds. When the real-time pressure value exceeds 0.33MPa, the exhaust valve is fully opened to accelerate the pressure relief, and the heater humidifier is turned off to avoid leakage of hot steam. This application adopts graded pressure relief to avoid shocks caused by sudden pressure drops.

[0118] It is worth mentioning that before the control parameters are initialized, the following steps are also included:

[0119] After the device is powered on, the self-check mechanism is activated. If the exhaust valve is stuck or the fan speed is abnormal, the system switches to the backup actuator and displays the fault code on the HMI.

[0120] According to historical operating data and based on a preset neural network model, optimal initialization parameters are output and the mapping table is updated, wherein the optimal initialization parameters include at least an initial value of a PID coefficient, a reference opening of an exhaust valve, and a reference speed of a fan.

[0121] It should be noted that after the HAST device is powered on, a self-check mechanism is started to detect whether each actuator is operating normally. For example, the opening and closing action of the exhaust valve is detected by current to see if there is any jamming, and the fan speed deviation is detected by the encoder to see if it is too large. When there is an abnormality in the self-check, the standby actuator is switched to, and the fault code is displayed through the HMI. In addition, this embodiment also uses a preset neural network model to analyze the operating status of each actuator based on historical operating data, including but not limited to the effects of aging and mechanical wear, so as to output the optimal initialization parameters and update the mapping table. The optimal initialization parameters include at least the initial value of the PID coefficient, the exhaust valve reference opening, and the fan reference speed. This embodiment improves the reliability of the system through a self-check mechanism, and reduces labor costs by optimizing parameters based on a neural network.

[0122] It is worth mentioning that it also includes:

[0123] Based on the temperature, humidity and pressure errors after each adjustment of the control parameters, a control parameter training set is established;

[0124] According to the control parameter training set, a preset neural network model is trained to automatically optimize the PID coefficient, the exhaust valve reference opening and the fan reference speed.

[0125] It should be noted that a training set is formed by recording the temperature error, humidity error, and pressure overshoot after each parameter adjustment. Based on a preset time period, the neural network model is trained and updated based on the training set to automatically optimize parameters such as the PID coefficient and exhaust valve reference opening. This application improves long-term control accuracy and reduces performance degradation caused by environmental changes or equipment aging by periodically updating and optimizing the neural network model.

[0126] Figure 4 The block diagram of the intelligent cooling system for HAST equipment based on dynamic control of relays of the present invention is shown.

[0127] like Figure 4 As shown, the second aspect of the present invention discloses a HAST equipment intelligent cooling system 4 based on relay dynamic control, including a memory 41 and a processor 42. The memory includes a HAST equipment intelligent cooling method program based on relay dynamic control. When the HAST equipment intelligent cooling method program based on relay dynamic control is executed by the processor, the following steps are implemented:

[0128] Get the cooling control instructions issued by HMI;

[0129] According to the cooling control instruction, first temperature information, first humidity information, and first pressure information are obtained;

[0130] collecting second temperature information, second humidity information, and second pressure information based on a preset sensor;

[0131] determining a cooling mode according to the second temperature information, the second humidity information, and the second pressure information;

[0132] Based on a preset mapping table, determining a control parameter set and initializing control parameters according to the cooling mode;

[0133] adjusting a switching control parameter of the heating relay according to a difference between the second temperature information and the first temperature information;

[0134] adjusting a switching control parameter of a humidifying relay according to a difference between the second humidity information and the first humidity information;

[0135] If the second pressure information exceeds a preset pressure threshold, the control parameters are adjusted according to a preset pressure relief control logic.

[0136] It should be noted that the first temperature information is the target temperature value of the HAST device; the first humidity information is the target humidity value of the HAST device; the first pressure information is the target pressure value of the HAST device; the second temperature information is the real-time measured temperature value of the HAST device; the second humidity information is the real-time measured humidity value of the HAST device; and the second pressure information is the real-time measured pressure value of the HAST device.

[0137] In this embodiment, first, the user inputs the target temperature, target humidity and maximum allowable pressure through the HMI interface, or calls a preset parameter template to generate a cooling task instruction. For example, the user inputs cooling to 100°C at 85% RH and a maximum allowable pressure of 0.3 MPa through the HMI interface. After receiving the instruction, the main controller parses it into executable cooling task parameters and extracts the target temperature, target humidity and target pressure. Secondly, as an implementation method, a PT100 is used as a temperature sensor to measure the temperature value in the collection box in real time, a humidity probe or a humidifying bucket temperature value is used to convert the humidity value in the collection box in real time, and a SMCISE30A is used as a pressure sensor to measure the pressure value in the collection box in real time. Based on the preset measurement and acquisition frequency, the temperature, humidity and pressure values ​​are measured in real time and stored in the memory. Based on the preset cooling mode rules, the difference between the real-time temperature, humidity and pressure data and the target value is comprehensively considered to enter the corresponding cooling mode, wherein the cooling mode includes a fast cooling mode, a moisturizing cooling mode and a slow cooling mode. As a real-time method, if the real-time temperature is much higher than the target temperature and the pressure is safe, it enters rapid cooling; if the pressure is close to the upper limit or the sample is sensitive, it enters slow cooling; if high humidity needs to be maintained, moisturizing cooling is selected; if the conditions of multiple modes are met at the same time, the cooling mode is selected according to the preset priority order. Then, according to the selected cooling mode, the corresponding control parameter set is loaded from the preset mapping table, where the control parameters include but are not limited to the exhaust valve opening, fan speed, heating / humidification relay action threshold, etc., and the actuator state is initialized based on the control parameter set. Finally, for temperature control, the switching frequency of the heating relay is dynamically adjusted through the PID algorithm according to the difference between the real-time temperature and the target; for humidity control, the working time of the humidification relay is adjusted according to the difference between the real-time humidity and the target humidity; for pressure control, the opening of the exhaust valve is adjusted according to the relationship between the real-time pressure value and the set threshold. This application avoids the response lag or malfunction caused by the traditional single threshold trigger through multi-parameter linkage control; and adopts a dynamic adjustment mechanism to improve the accuracy and stability of temperature and humidity control.

[0138] According to an embodiment of the present invention, determining the cooling mode according to the second temperature information, the second humidity information, and the second pressure information is specifically:

[0139] obtaining first temperature difference information according to a difference between the second temperature information and the first temperature information;

[0140] If the first temperature difference information exceeds a preset rapid cooling threshold and the second pressure information is lower than a preset safety pressure threshold, it is determined to be a rapid cooling mode;

[0141] If the first temperature difference information is lower than the preset slow cooling threshold and the second humidity information is lower than the first humidity information, it is determined to be the moisturizing cooling mode;

[0142] Based on the safety pressure threshold, determining a first pressure threshold;

[0143] If the second pressure information is higher than the first pressure threshold, it is determined to be a slow cooling mode;

[0144] Based on the set priority order, a cooling mode is selected.

[0145] It should be noted that, as an implementation method, +20% of the target temperature is used as the rapid cooling threshold, +5% of the target temperature is used as the slow cooling threshold, and 80% of the target pressure value is used as the first pressure threshold. Taking the target temperature of 100°C, the target pressure value of 0.3MPa, and the target humidity of 85%RH as an example, the rapid cooling threshold is 20°C, the slow cooling threshold is 5°C, and the first pressure threshold is 0.24MPa. When the real-time temperature is higher than the target temperature, if the temperature difference between the real-time temperature and the target temperature exceeds 20°C, and the real-time pressure value is lower than 0.3MPa, it is determined to be in rapid cooling mode; if the temperature difference between the real-time temperature and the target temperature is lower than 5°C, and the real-time humidity value is lower than 85%RH, it is determined to be in moisturizing cooling mode; if the real-time pressure value exceeds 0.24MPa or the tested component is a calibrated sensitive component, it enters slow cooling mode. When conditions for multiple modes are met simultaneously, such as high temperature and high pressure, the cooling mode is selected based on a user-defined priority. In one embodiment, the priority may be fast cooling mode > moisturizing cooling mode > slow cooling mode. This embodiment reduces the risk of misjudgment by regularizing the mode decision logic and employs a priority mechanism to ensure that emergency conditions are handled first.

[0146] According to an embodiment of the present invention, the control parameter set and the initialization control parameters are determined based on the preset mapping table and according to the cooling mode, specifically:

[0147] When the rapid cooling mode is determined, the control parameter set is the exhaust valve fully open parameter, the fan is the first level speed parameter and the heating relay is closed;

[0148] When the moisturizing cooling mode is determined, the control parameter set is that the exhaust valve is set to the minimum opening parameter, the fan is turned off, and the humidification relay is turned on;

[0149] When the slow cooling mode is determined, the control parameter set is that the exhaust valve is set to the first opening parameter and the fan is set to the second speed parameter;

[0150] According to the selected cooling mode, the corresponding control parameter set is loaded from the mapping table and the actuator state is initialized.

[0151] It should be noted that, as an embodiment, when in cooling mode, the control parameter set is: exhaust valve opening 100%, fan speed 5000RPM, heating relay off; when in moisturizing cooling mode, the control parameter set is: exhaust valve opening 10%, fan off, humidification relay on; when in slow cooling mode, the control parameter set is: exhaust valve opening 30%, fan speed 3000RPM. Based on the selected cooling mode, the parameters are read from the mapping table and sent to the actuator. This embodiment determines the initial state of each actuator based on the set control parameter set, avoids sudden changes in the actuator's movement, and improves the consistency and stability of the control.

[0152] According to an embodiment of the present invention, adjusting the switching control parameter of the heating relay according to the difference between the second temperature information and the first temperature information is specifically:

[0153] Calculating a difference between the second temperature information and the first temperature information to obtain first temperature difference information;

[0154] If the first temperature difference information exceeds a preset first temperature difference threshold, a heating relay closing instruction is generated and the over-temperature duration is recorded;

[0155] If the first temperature difference information is lower than a preset second temperature difference threshold, a heating relay on instruction is generated, and the fan speed parameter is adjusted according to the first temperature difference information based on a preset PID control algorithm;

[0156] When the over-temperature duration exceeds a preset over-temperature time threshold, the temperature abnormality mechanism is triggered, the heating relay is forcibly closed and the backup heat dissipation channel is started.

[0157] It should be noted that this embodiment provides a temperature control logic. The difference between the real-time temperature Tm and the target temperature Tt is calculated to obtain the first temperature difference information ΔT; wherein, ΔT = Tm-Tt. According to the components tested by HAST, the temperature difference threshold is determined. As an implementation method, if the first temperature difference information exceeds +2°C, a heating relay shutdown instruction is generated, and the over-temperature duration is recorded; if the first temperature difference information is lower than -2°C, a heating relay start instruction is generated, and the fan speed parameter is adjusted according to the first temperature difference information and the preset PID algorithm. In addition, by recording the over-temperature duration, when the over-temperature duration exceeds the set over-temperature time threshold, the temperature anomaly mechanism is triggered, the heating relay is forcibly closed, and the backup heat dissipation channel is started, for example, the backup heat dissipation fan is started. This embodiment uses the PID algorithm to improve the temperature control response speed, and the over-temperature protection mechanism prevents the equipment from being damaged by overheating.

[0158] According to an embodiment of the present invention, adjusting the switching control parameters of the humidification relay according to the difference between the second humidity information and the first humidity information is specifically:

[0159] Calculating a difference between the second humidity information and the first humidity information to obtain first humidity difference information;

[0160] If the first humidity difference is lower than a preset first humidity threshold, starting the humidification relay;

[0161] If the first humidity difference is higher than a preset second humidity threshold, turning off the humidification relay;

[0162] If the first humidity difference is higher than a preset third humidity threshold, the humidification relay is forcibly closed and the fan is started for dehumidification.

[0163] It should be noted that this embodiment provides a humidity control logic. The difference between the real-time temperature Hm and the target temperature Ht is calculated to obtain first humidity difference information ΔH; where ΔH = Hm - Ht. As an implementation, if the first humidity difference information is lower than -5% RH, the humidification relay is activated to increase the humidity within the collection box; if the first humidity difference information is higher than +2% RH, the humidification relay is turned off, stopping the humidification operation; if the first humidity difference information is higher than +5% RH, the humidification relay is turned off, and the fan dehumidification is activated according to the set dehumidification time, using a forced dehumidification mechanism to prevent humidity overshoot.

[0164] According to an embodiment of the present invention, if the second pressure information exceeds a preset pressure threshold, the control parameter is adjusted according to a preset pressure relief control logic, specifically:

[0165] Determining a first pressure threshold and a second pressure threshold based on a preset percentage threshold and according to the first pressure information;

[0166] If the second pressure information exceeds the first pressure threshold, the exhaust valve opening is gradually increased according to a preset step;

[0167] If the second pressure information exceeds the second pressure threshold, the exhaust valve opening is set to the maximum, and the heating relay and the humidifying relay are turned off.

[0168] It should be noted that this embodiment provides a pressure control logic. Take the target pressure value of 0.3MPa as an example. As a real-time method, 80% of the target pressure value is used as the first pressure threshold, and 110% of the target pressure value is used as the second pressure threshold; that is, the first pressure threshold is 0.24MPa, and the second pressure threshold is 0.33MPa. When the real-time pressure value exceeds 0.24MPa, the exhaust valve opening is gradually increased according to the set step, for example, the opening is increased by 10% every 5 seconds. When the real-time pressure value exceeds 0.33MPa, the exhaust valve is fully opened to accelerate the pressure relief, and the heater humidifier is turned off to avoid leakage of hot steam. This application adopts graded pressure relief to avoid shocks caused by sudden pressure drops.

[0169] It is worth mentioning that before the control parameters are initialized, the following steps are also included:

[0170] After the device is powered on, the self-check mechanism is activated. If the exhaust valve is stuck or the fan speed is abnormal, the system switches to the backup actuator and displays the fault code on the HMI.

[0171] According to historical operating data and based on a preset neural network model, optimal initialization parameters are output and the mapping table is updated, wherein the optimal initialization parameters include at least an initial value of a PID coefficient, a reference opening of an exhaust valve, and a reference speed of a fan.

[0172] It should be noted that after the HAST device is powered on, a self-check mechanism is started to detect whether each actuator is operating normally. For example, the opening and closing action of the exhaust valve is detected by current to see if there is any jamming, and the fan speed deviation is detected by the encoder to see if it is too large. When there is an abnormality in the self-check, the standby actuator is switched to, and the fault code is displayed through the HMI. In addition, this embodiment also uses a preset neural network model to analyze the operating status of each actuator based on historical operating data, including but not limited to the effects of aging and mechanical wear, so as to output the optimal initialization parameters and update the mapping table. The optimal initialization parameters include at least the initial value of the PID coefficient, the exhaust valve reference opening, and the fan reference speed. This embodiment improves the reliability of the system through a self-check mechanism, and reduces labor costs by optimizing parameters based on a neural network.

[0173] It is worth mentioning that it also includes:

[0174] Based on the temperature, humidity and pressure errors after each adjustment of the control parameters, a control parameter training set is established;

[0175] According to the control parameter training set, a preset neural network model is trained to automatically optimize the PID coefficient, the exhaust valve reference opening and the fan reference speed.

[0176] It should be noted that a training set is formed by recording the temperature error, humidity error, and pressure overshoot after each parameter adjustment. Based on a preset time period, the neural network model is trained and updated based on the training set to automatically optimize parameters such as the PID coefficient and exhaust valve reference opening. This application improves long-term control accuracy and reduces performance degradation caused by environmental changes or equipment aging by periodically updating and optimizing the neural network model.

[0177] The third aspect of the present invention provides a computer-readable storage medium, which includes a program for an intelligent cooling method for HAST equipment based on dynamic control of relays. When the program for an intelligent cooling method for HAST equipment based on dynamic control of relays is executed by a processor, the steps of the intelligent cooling method for HAST equipment based on dynamic control of relays as described in any one of the above items are implemented.

[0178] In summary, the present invention provides an intelligent cooling method, system and medium for HAST equipment based on dynamic control of relays. The method detects the data in the collection box in real time through temperature, humidity and pressure sensors, and dynamically adjusts the switching logic of the heating relay and the humidifying relay in combination with the set target value, and links the pressure relief control logic to realize multi-parameter collaborative decision-making; based on real-time data and preset rules, the method automatically selects fast cooling, slow cooling or moisturizing cooling mode; defines control parameter sets for different cooling modes through preset mapping tables, realizes parameter initialization and actuator state standardization; introduces PID algorithm to adjust temperature deviation, combines with pressure graded pressure relief strategy, and triggers emergency shutdown in case of overtemperature and overpressure; through dynamic and intelligent control logic, significantly improves the temperature and humidity adjustment accuracy, pressure stability and sample protection capability, while reducing the risk of equipment abnormality and the probability of test data distortion.

[0179] If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0180] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An intelligent cooling method for HAST equipment based on dynamic control of relays, characterized in that: The method comprises: Get the cooling control instructions issued by HMI; obtaining first temperature information and first humidity information according to the cooling control instruction; collecting second temperature information, second humidity information, and second pressure information based on a preset sensor; determining a cooling mode according to the second temperature information, the second humidity information, and the second pressure information; Based on a preset mapping table, determining a control parameter set and initializing control parameters according to the cooling mode; adjusting a switching control parameter of the heating relay according to a difference between the second temperature information and the first temperature information; adjusting a switching control parameter of a humidifying relay according to a difference between the second humidity information and the first humidity information; If the second pressure information exceeds a preset pressure threshold, the control parameters are adjusted according to a preset pressure relief control logic.

2. The intelligent cooling method for HAST equipment based on relay dynamic control according to claim 1, characterized in that: The determining of the cooling mode according to the second temperature information, the second humidity information, and the second pressure information is specifically: obtaining first temperature difference information according to a difference between the second temperature information and the first temperature information; If the first temperature difference information exceeds a preset rapid cooling threshold and the second pressure information is lower than a preset safety pressure threshold, it is determined to be a rapid cooling mode; If the first temperature difference information is lower than the preset slow cooling threshold and the second humidity information is lower than the first humidity information, it is determined to be the moisturizing cooling mode; Based on the safety pressure threshold, determining a first pressure threshold; If the second pressure information is higher than the first pressure threshold, it is determined to be a slow cooling mode; Based on the set priority order, a cooling mode is selected.

3. The intelligent cooling method for HAST equipment based on relay dynamic control according to claim 2, characterized in that: The control parameter set and the initialization control parameters are determined based on the preset mapping table and according to the cooling mode, specifically: When the rapid cooling mode is determined, the control parameter set is the exhaust valve fully open parameter, the fan is the first level speed parameter and the heating relay is closed; When the moisturizing cooling mode is determined, the control parameter set is that the exhaust valve is set to the minimum opening parameter, the fan is turned off, and the humidification relay is turned on; When the slow cooling mode is determined, the control parameter set is that the exhaust valve is set to the first opening parameter and the fan is set to the second speed parameter; According to the selected cooling mode, the corresponding control parameter set is loaded from the mapping table and the actuator state is initialized.

4. The intelligent cooling method for HAST equipment based on relay dynamic control according to claim 1, characterized in that: The switching control parameter of the heating relay is adjusted according to the difference between the second temperature information and the first temperature information, specifically: Calculating a difference between the second temperature information and the first temperature information to obtain first temperature difference information; If the first temperature difference information exceeds a preset first temperature difference threshold, a heating relay closing instruction is generated and the over-temperature duration is recorded; If the first temperature difference information is lower than a preset second temperature difference threshold, a heating relay on instruction is generated, and the fan speed parameter is adjusted according to the first temperature difference information based on a preset PID control algorithm; When the over-temperature duration exceeds a preset over-temperature time threshold, the temperature abnormality mechanism is triggered, the heating relay is forcibly closed and the backup heat dissipation channel is started.

5. The intelligent cooling method for HAST equipment based on relay dynamic control according to claim 1 is characterized in that: The switching control parameters of the humidification relay are adjusted according to the difference between the second humidity information and the first humidity information, specifically: Calculating a difference between the second humidity information and the first humidity information to obtain first humidity difference information; If the first humidity difference is lower than a preset first humidity threshold, starting the humidification relay; If the first humidity difference is higher than a preset second humidity threshold, turning off the humidification relay; If the first humidity difference is higher than a preset third humidity threshold, the humidification relay is forcibly closed and the fan is started for dehumidification.

6. The intelligent cooling method for HAST equipment based on relay dynamic control according to claim 1, characterized in that: If the second pressure information exceeds the preset pressure threshold, the control parameters are adjusted according to the preset pressure relief control logic, specifically: Determining a first pressure threshold and a second pressure threshold based on a preset percentage threshold and according to the first pressure information; If the second pressure information exceeds the first pressure threshold, the exhaust valve opening is gradually increased according to a preset step; If the second pressure information exceeds the second pressure threshold, the exhaust valve opening is set to the maximum, and the heating relay and the humidifying relay are turned off.

7. An intelligent cooling system for HAST equipment based on dynamic control of relays, characterized in that: The system includes a memory and a processor. The memory includes a HAST equipment intelligent cooling method program based on relay dynamic control. When the HAST equipment intelligent cooling method program based on relay dynamic control is executed by the processor, the following steps are implemented: Get the cooling control instructions issued by HMI; obtaining first temperature information and first humidity information according to the cooling control instruction; collecting second temperature information, second humidity information, and second pressure information based on a preset sensor; determining a cooling mode according to the second temperature information, the second humidity information, and the second pressure information; Based on a preset mapping table, determining a control parameter set and initializing control parameters according to the cooling mode; adjusting a switching control parameter of the heating relay according to a difference between the second temperature information and the first temperature information; adjusting a switching control parameter of a humidifying relay according to a difference between the second humidity information and the first humidity information; If the second pressure information exceeds a preset pressure threshold, the control parameters are adjusted according to a preset pressure relief control logic.

8. The intelligent cooling system for HAST equipment based on relay dynamic control according to claim 7, characterized in that: The determining of the cooling mode according to the second temperature information, the second humidity information, and the second pressure information is specifically: obtaining first temperature difference information according to a difference between the second temperature information and the first temperature information; If the first temperature difference information exceeds a preset rapid cooling threshold and the second pressure information is lower than a preset safety pressure threshold, it is determined to be a rapid cooling mode; If the first temperature difference information is lower than the preset slow cooling threshold and the second humidity information is lower than the first humidity information, it is determined to be the moisturizing cooling mode; Based on the safety pressure threshold, determining a first pressure threshold; If the second pressure information is higher than the first pressure threshold, it is determined to be a slow cooling mode; Based on the set priority order, a cooling mode is selected.

9. The intelligent cooling system for HAST equipment based on relay dynamic control according to claim 8, characterized in that: The control parameter set and the initialization control parameters are determined based on the preset mapping table and according to the cooling mode, specifically: When the rapid cooling mode is determined, the control parameter set is the exhaust valve fully open parameter, the fan is the first level speed parameter and the heating relay is closed; When the moisturizing cooling mode is determined, the control parameter set is that the exhaust valve is set to the minimum opening parameter, the fan is turned off, and the humidification relay is turned on; When the slow cooling mode is determined, the control parameter set is that the exhaust valve is set to the first opening parameter and the fan is set to the second speed parameter; According to the selected cooling mode, the corresponding control parameter set is loaded from the mapping table and the actuator state is initialized.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: The computer-readable storage medium includes a program for an intelligent cooling method for HAST equipment based on dynamic control of relays. When the program for an intelligent cooling method for HAST equipment based on dynamic control of relays is executed by a processor, the steps of the intelligent cooling method for HAST equipment based on dynamic control of relays as described in any one of claims 1 to 6 are implemented.

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