Temperature control method and device, medium and equipment

Abstract

The embodiment of the invention provides a temperature control method and device, a medium and equipment. The method comprises the following steps: acquiring a working environment temperature value of a target area; calculating a temperature difference value between the working environment temperature value and a preset temperature value; according to the temperature difference value and a preset parameter determination algorithm, a driving parameter value used for adjusting the opening degree of the electronic expansion valve is calculated; and the opening degree of the electronic expansion valve is dynamically controlled according to the driving parameter value, so that the descending speed of the working environment temperature value is in a stable or tending to be stable state before the electronic expansion valve is triggered to be closed. By gradually adjusting the opening degree of the electronic expansion valve, the inertia effect of the refrigerant is effectively relieved till the falling speed of the working environment temperature is in a stable or tending to be stable, and therefore the problem that after the compressor is closed, the temperature is continuously decreased due to the inertia effect of the refrigerant is avoided.

Description

Technical Field

[0001] The present application relates to the field of temperature control technology, in particular to a temperature control technology field, and more particularly to a temperature control method, device, medium and equipment. Background Art

[0002] To reduce production costs, some economical refrigeration equipment currently on the market, such as fixed-frequency refrigerators or fixed-frequency air conditioners, generally utilize a fixed-frequency compressor and mechanical expansion valve configuration to achieve cooling. While this configuration reduces costs, the lack of adaptive adjustment capabilities in the fixed-frequency compressor and the mechanical expansion valve's ability to operate only in either fully open or fully closed states make it difficult for the refrigeration equipment to maintain a stable operating temperature. In particular, when the mechanical expansion valve reaches the closing condition, the inertia of the refrigerant causes the refrigerant to continue circulating in the system, potentially causing the refrigeration equipment's operating temperature to continue to drop. Ultimately, even after the fixed-frequency compressor and mechanical expansion valve are closed, the refrigeration equipment's operating temperature remains below the expected level, impacting the user experience. Summary of the Invention

[0003] Embodiments of the present application provide a temperature control method, apparatus, medium, and device. The temperature control method provided in the embodiments of the present application is used to overcome the problem of unstable temperature control caused by mechanical expansion valves in refrigeration equipment, particularly excessive temperature drops caused by the inertial effect of the refrigerant, thereby improving the user experience.

[0004] On the one hand, an embodiment of the present application provides a temperature control method applied to a refrigeration device, the method comprising:

[0005] Get the working environment temperature value of the target area;

[0006] Calculating the temperature difference between the working environment temperature value and the preset temperature value;

[0007] Calculating a driving parameter value for adjusting the opening and closing degree of the electronic expansion valve according to the temperature difference and a preset parameter determination algorithm;

[0008] The opening and closing degree of the electronic expansion valve is dynamically controlled according to the driving parameter value, so that the decreasing speed of the working environment temperature value is stable or tends to be stable before triggering the electronic expansion valve to close.

[0009] Furthermore, in the temperature control method described in the embodiment of the present application, the driving parameter value for adjusting the opening and closing degree of the electronic expansion valve is calculated based on the temperature difference and a preset parameter determination algorithm, including:

[0010] determining the temperature difference;

[0011] constructing a proportional term for responding to a change in the temperature difference according to the temperature difference;

[0012] constructing an integral term for eliminating steady-state errors according to the accumulated value of the temperature difference;

[0013] constructing a differential term for predicting future changes in the temperature difference according to the rate of change of the temperature difference;

[0014] The PID calculation is performed on the opening and closing degree of the electronic expansion valve through the proportional term, the integral term and the differential term to obtain a driving parameter value for adjusting the opening and closing degree of the electronic expansion valve.

[0015] Furthermore, in the temperature control method described in the embodiment of the present application, the driving parameter includes a driving voltage or a driving current for controlling the opening and closing degree of the electronic expansion valve.

[0016] Furthermore, in the temperature control method described in the embodiment of the present application, dynamically controlling the opening and closing degree of the electronic expansion valve according to the driving parameter value includes:

[0017] The electronic expansion valve is controlled to close according to the driving parameter value, wherein the temperature difference corresponding to the driving parameter value is less than a preset minimum temperature threshold.

[0018] Furthermore, in the temperature control method described in the embodiment of the present application, dynamically controlling the opening and closing degree of the electronic expansion valve according to the driving parameter value includes:

[0019] The electronic expansion valve is controlled to open according to the driving parameter value, wherein the temperature difference corresponding to the driving parameter value is greater than a preset maximum temperature threshold.

[0020] Furthermore, in the temperature control method described in the embodiment of the present application, after dynamically controlling the opening and closing degree of the electronic expansion valve according to the driving parameter value, the method further includes:

[0021] If the electronic expansion valve is in a closed state, the fixed-frequency compressor is controlled to be closed to further prevent the working environment temperature from decreasing;

[0022] If the electronic expansion valve is in an open state, the fixed-frequency compressor is controlled to start, so as to further increase the working environment temperature value.

[0023] Furthermore, in the temperature control method described in the embodiment of the present application, after obtaining the working environment temperature value of the target area, the method further includes:

[0024] Monitor the change range of the working environment temperature value of the target area within a preset time period, and dynamically adjust the minimum temperature threshold and / or the maximum temperature threshold according to the change range.

[0025] Accordingly, another aspect of the present application further provides a temperature control device, the temperature control device comprising:

[0026] A data extraction module, configured to extract at least one video link and video title from the current page based on a preset strategy;

[0027] An information acquisition module, configured to determine first video identifier information corresponding to each of the video links, and second video identifier information corresponding to each of the video titles;

[0028] a title matching module, configured to match each of the video links and each of the video titles based on the first video identifier information and the second video identifier information;

[0029] The information display module is used to display the matched target video link and target video title on the current page.

[0030] Correspondingly, another aspect of the embodiment of the present application further provides a computer storage medium, wherein the computer storage medium stores a plurality of instructions, and the instructions are suitable for loading by a processor to execute the temperature control method as described above.

[0031] Correspondingly, another aspect of an embodiment of the present application further provides an electronic device, including a processor and a memory, wherein the memory stores a plurality of instructions, and the processor loads the instructions to execute the temperature control method as described above.

[0032] The present application provides a temperature control method, apparatus, medium, and device. The method comprises obtaining a target operating environment temperature value; calculating a temperature difference between the operating environment temperature value and a preset temperature value; calculating a driving parameter value for adjusting the opening and closing degree of an electronic expansion valve based on the temperature difference and a preset parameter determination algorithm; and dynamically controlling the opening and closing degree of the electronic expansion valve based on the driving parameter value so that the rate of decrease of the operating environment temperature value is stable or tends to be stable before triggering the electronic expansion valve to close. The temperature control method provided by the present application replaces a traditional mechanical expansion valve with an electronic expansion valve. The electronic expansion valve's ability to adjust its opening and closing degree according to changes in the operating environment temperature of the refrigeration equipment achieves more precise temperature control. Furthermore, in actual use, when the operating environment temperature of the refrigeration equipment is in a decreasing process, the inertia effect of the refrigerant can be effectively alleviated by gradually adjusting the opening and closing degree of the electronic expansion valve until the rate of decrease of the operating environment temperature is stable or tends to be stable, thereby avoiding the problem of continuous temperature drop caused by the inertia effect of the refrigerant after the compressor is turned off. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0034] Figure 1 A schematic flow chart of the temperature control method provided in an embodiment of the present application.

[0035] Figure 2 This is a schematic diagram of the structure of the temperature control device provided in an embodiment of the present application.

[0036] Figure 3 Another structural schematic diagram of the temperature control device provided in an embodiment of the present application.

[0037] Figure 4 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0039] An embodiment of the present application provides a temperature control method that utilizes an electronic expansion valve in place of a traditional mechanical expansion valve. This method utilizes the electronic expansion valve's ability to adaptively adjust its opening and closing degrees based on changes in the refrigeration equipment's operating ambient temperature, thereby achieving more refined temperature control. Furthermore, as the refrigeration equipment's operating ambient temperature decreases, the inertia effect of the refrigerant is effectively mitigated by gradually adjusting the opening and closing degrees of the electronic expansion valve until the rate of decrease in the operating ambient temperature stabilizes or approaches a stable state, thereby avoiding the problem of a continued temperature drop caused by the refrigerant's inertia effect after the compressor is shut down.

[0040] The term "and / or" as used in this application can be used to describe an association relationship between related objects, indicating that three possible relationships exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0041] The terms "first", "second" etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments described herein can be implemented in a sequence other than the content illustrated or described here. In addition, the terms "comprise" and "have" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or television set comprising a series of steps or modules need not be limited to the steps or modules clearly listed, but may include other steps or modules that are not clearly listed or that are inherent to these processes, methods, products or television sets. The naming or numbering of the steps in this application does not mean that the steps in the method flow must be performed in the time / logical sequential order indicated by the naming or numbering. The process steps that have been named or numbered can be changed in execution order according to the technical purpose to be achieved, as long as the same or similar technical effect can be achieved. The division of modules in this application is a logical division. In actual application, there may be other division methods. For example, multiple modules can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between modules can be electrical or other similar forms, which are not limited in this application. Moreover, the modules or submodules described as separate components may or may not be physically separated, may or may not be physical modules, or may be distributed into multiple circuit modules. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this application.

[0042] The temperature control method involved in the embodiments of the present application is mainly applied to electronic devices, which may be refrigerators, air conditioners, smart phones, tablet computers, laptop computers, desktop computers, and servers, etc., which are not limited here. Optionally, the server may be an independent physical server, or a server cluster or distributed system composed of multiple physical servers, or an IoT cloud (Internet of Things cloud) that provides the ability to store, process and manage data generated by IoT televisions, or a cloud server that provides cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, domain name services, security services, CDN (Content Delivery Network), and basic cloud computing services such as big data and artificial intelligence platforms, which are not limited here.

[0043] For ease of understanding, the specific process in the embodiment of this application is described below. Figure 1 , Figure 1A flow chart of an embodiment of the temperature control method provided in the embodiment of the present application.

[0044] exist Figure 1 In the embodiment shown, the method can be applied to refrigeration equipment, such as a refrigerator or an air conditioner, and other equipment with a refrigeration function. The method specifically includes the following steps:

[0045] S101, obtaining the working environment temperature value of the target area.

[0046] In this embodiment, the refrigeration device uses a refrigerator as an example, and the corresponding target area can be the refrigerator compartment within the refrigerator. A temperature detection device, such as a temperature sensor, is used to periodically or in real time obtain the operating ambient temperature of the refrigerator compartment. Based on the operating ambient temperature, the current operating state of the refrigerator compartment can be analyzed, such as whether the operating ambient temperature is too high, too low, or normal. The corresponding operating state can then be analyzed based on the different operating ambient temperature values. For example, if the operating ambient temperature is too high, the internal temperature of the refrigerator compartment can be lowered to restore it to a normal operating ambient temperature. If the operating ambient temperature is too low, the internal temperature of the refrigerator compartment can be raised to restore it to a normal operating ambient temperature.

[0047] S102: Calculate the temperature difference between the working environment temperature value and a preset temperature value.

[0048] In this embodiment, the preset temperature value refers to the temperature value corresponding to normal operation of the refrigeration device. The preset temperature value can be either a factory default setting or a manually set value. For example, a user can set the preset temperature value of the refrigerator's refrigeration compartment to 5°C and detect in real time or periodically whether there is a difference between the current operating ambient temperature of the refrigeration compartment and the preset temperature value. Specifically, the preset temperature value can be subtracted from the operating ambient temperature value to calculate the temperature difference between the operating ambient temperature value and the preset temperature value, thereby analyzing the current operating status of the refrigeration compartment. For example, if the current operating ambient temperature of the refrigeration compartment is measured to be 10°C, the corresponding temperature difference is 10 minus 5, which equals 5. Assuming that the upper limit of the temperature difference is 3, the calculated temperature difference clearly exceeds the set upper limit, indicating that the current operating ambient temperature of the refrigeration compartment is too high. It is necessary to promptly take appropriate temperature control measures to reduce the internal temperature of the refrigeration compartment to restore it to a normal operating ambient temperature value, that is, to control the temperature difference below the upper limit. Similarly, when the current working environment temperature of the refrigeration room is measured to be 0°C, the corresponding temperature difference is 0 minus 5, which equals -5. Assuming that the lower limit of the temperature difference is -2, the calculated temperature difference is obviously lower than the set lower limit, indicating that the current working environment temperature of the refrigeration room is too low. It is necessary to take corresponding temperature control measures in time to increase the internal temperature of the refrigeration room and restore it to the normal working environment temperature, that is, to control the temperature difference above the lower limit.

[0049] S103: Calculating a driving parameter value for adjusting the opening and closing degree of the electronic expansion valve according to the temperature difference and a preset parameter determination algorithm.

[0050] In this embodiment, an electronic expansion valve is used to replace the traditional mechanical expansion valve, and an algorithm is determined based on the temperature difference and preset parameters to calculate the driving parameter value for adjusting the opening and closing degree of the electronic expansion valve. The electronic expansion valve is capable of adaptively adjusting the opening and closing degree according to changes in the working environment temperature of the refrigeration equipment, thereby achieving more precise temperature control.

[0051] It should be explained that electronic expansion valves and mechanical expansion valves are both commonly used throttling devices in refrigeration systems. They are both functionally used to regulate the flow of refrigerant, but there are significant differences in their working principles and characteristics. Mechanical expansion valves usually rely on spring force and the pressure difference of the refrigerant to control the opening and closing of the valve. They adjust the valve opening by sensing the pressure changes of the refrigerant, thereby controlling the flow of refrigerant. Mechanical expansion valves generally have only two operating states, namely fully open and fully closed, and lack the ability to adjust the intermediate state. Electronic expansion valves, on the other hand, use electronic signals to control the stepper motor or servo motor to precisely adjust the opening and closing of the valve. They can achieve any opening between fully closed and fully open, thereby more precisely controlling the flow of refrigerant.

[0052] In some embodiments, the driving parameter value calculated by the temperature difference and the preset parameter determination algorithm includes a driving voltage or a driving current for controlling the opening and closing degree of the electronic expansion valve, or other types of driving parameters, which are not limited here.

[0053] S104 , dynamically controlling the opening and closing degree of the electronic expansion valve according to the driving parameter value, so that the decreasing speed of the working environment temperature value is stable or tends to be stable before triggering the electronic expansion valve to close.

[0054] It should be explained that this solution is mainly aimed at some economical refrigeration equipment currently on the market, such as fixed-frequency refrigerators or fixed-frequency air conditioners. In order to reduce production costs, this type of refrigeration equipment generally adopts the configuration of fixed-frequency compressors and mechanical expansion valves to achieve refrigeration functions. Although this configuration reduces costs, the lack of adaptive adjustment function of the fixed-frequency compressor and the fact that the mechanical expansion valve can only provide fully open or fully closed working states make it difficult for the working temperature of the refrigeration equipment to maintain a stable state. In particular, when the mechanical expansion valve reaches the closing condition, due to the inertia effect of the refrigerant (i.e., the refrigerant), the refrigerant continues to circulate in the refrigeration system, which may cause the working temperature of the refrigeration equipment to continue to drop. Ultimately, even if the compressor and expansion valve are closed, the working temperature of the refrigeration equipment is still below the expected temperature, thereby affecting the user experience. In order to solve the above problems, in this embodiment, an electronic expansion valve is used to replace the traditional mechanical expansion valve, and the electronic expansion valve is used to adaptively adjust the opening and closing degree according to the changes in the working environment temperature of the refrigeration equipment to achieve more precise temperature control. Moreover, as the working environment temperature of the refrigeration equipment drops, the inertia effect of the refrigerant is effectively alleviated by gradually adjusting the opening and closing degree of the electronic expansion valve until the rate of decrease in the working environment temperature is stable or tends to be stable, thereby avoiding the problem of continuous temperature drop due to the inertia effect of the refrigerant after the compressor is turned off.

[0055] In some embodiments, the calculating of the driving parameter value for adjusting the opening and closing degree of the electronic expansion valve based on the temperature difference and a preset parameter determination algorithm includes:

[0056] determining the temperature difference;

[0057] constructing a proportional term for responding to a change in the temperature difference according to the temperature difference;

[0058] constructing an integral term for eliminating steady-state errors according to the accumulated value of the temperature difference;

[0059] constructing a differential term for predicting future changes in the temperature difference according to the rate of change of the temperature difference;

[0060] The PID calculation is performed on the opening and closing degree of the electronic expansion valve through the proportional term, the integral term and the differential term to obtain a driving parameter value for adjusting the opening and closing degree of the electronic expansion valve.

[0061] It's important to explain that the PID (Proportional-Integral-Derivative) algorithm is a feedback control algorithm used in industrial control systems. It adjusts the control input to reduce the deviation between the process variable (such as temperature, pressure, position, etc.) and the desired value. A PID controller consists of three main components: the proportional term (P), the integral term (I), and the differential term (D), each of which controls different characteristics of the controlled process.

[0062] The following are the basic principles and formulas of the PID algorithm:

[0063] Proportional term (P): The proportional term controls the current error (i.e., the temperature difference in this case). The larger the error, the stronger the proportional term. While the proportional term can respond quickly to errors, it often leaves a steady-state error.

[0064] Integral term (I): The integral term controls based on past error accumulation, aiming to eliminate steady-state error. While the integral term can ultimately stabilize the system at the setpoint, it has a slow response and can potentially cause overshoot and oscillation.

[0065] Derivative term (D): The differential term performs predictive control based on the error trend (i.e., the differential of the error). The differential term can predict error changes, allowing for early adjustments and reducing overshoot.

[0066] The PID algorithm is expressed using the following formula:

[0067] U=P+I+D=k p *e k +k i *(e0+e1+...+e k )+k d *(e k -e k-1 )

[0068] Among them, U represents the driving parameter; P represents the proportional term; I represents the proportional term; D represents the proportional term; k p represents the proportional term coefficient; k i Represents the integral term coefficient; k d represents the differential term coefficient; e k Represents the error (i.e., temperature difference) of the kth acquisition.

[0069] In this embodiment, a PID calculation is performed on the opening and closing degree of the electronic expansion valve using the proportional term, the integral term, and the differential term to obtain a driving parameter value for adjusting the opening and closing degree of the electronic expansion valve, such as a driving voltage for controlling the opening and closing degree of the electronic expansion valve. The PID algorithm can accurately calculate a control signal (such as a driving voltage) based on the temperature difference between the operating ambient temperature of the target area and a preset temperature value, which is used to adjust the opening and closing degree of the electronic expansion valve. This can improve the matching between the output of the refrigeration equipment and actual demand, reduce temperature fluctuations, and improve control accuracy. Furthermore, the use of the PID algorithm can convert the changing process of the temperature difference into a driving parameter such as a driving voltage, thereby rationally controlling the opening and closing degree of the electronic expansion valve, so that the opening and closing degree of the electronic expansion valve can be adjusted according to the changes in the temperature difference. Compared with the traditional method of directly closing the mechanical expansion valve, dynamically adjusting the opening and closing degree of the electronic expansion valve is beneficial to the consumption of refrigerant cooling capacity and can effectively alleviate the inertia effect of the refrigerant, thereby avoiding the problem of continuous temperature drop caused by the inertia effect of the refrigerant after the compressor is shut down.

[0070] In some embodiments, dynamically controlling the opening and closing degree of the electronic expansion valve according to the driving parameter value includes:

[0071] The electronic expansion valve is controlled to close according to the driving parameter value, wherein the temperature difference corresponding to the driving parameter value is less than a preset minimum temperature threshold.

[0072] In this embodiment, when the temperature difference corresponding to the driving parameter value is less than the preset minimum temperature threshold, it means that the working environment temperature of the target area is too low. At this time, the electronic expansion valve is controlled to be completely closed to prevent the working environment temperature of the target area from continuing to drop.

[0073] In some embodiments, dynamically controlling the opening and closing degree of the electronic expansion valve according to the driving parameter value includes:

[0074] The electronic expansion valve is controlled to open according to the driving parameter value, wherein the temperature difference corresponding to the driving parameter value is greater than a preset maximum temperature threshold.

[0075] In this embodiment, when the temperature difference corresponding to the driving parameter value is greater than the preset maximum temperature threshold, it means that the working environment temperature of the target area is too high. At this time, the electronic expansion valve is controlled to be fully opened to reduce the working environment temperature of the target area and prevent the working environment temperature of the target area from continuing to rise.

[0076] In some embodiments, after dynamically controlling the opening and closing degree of the electronic expansion valve according to the driving parameter value, the method further includes:

[0077] If the electronic expansion valve is in a closed state, the fixed-frequency compressor is controlled to be closed to further prevent the working environment temperature from decreasing.

[0078] In this embodiment, by controlling the fixed-frequency compressor to be turned off and combining it with the temperature control measure of closing the electronic expansion valve, it is possible to further prevent the working environment temperature from decreasing.

[0079] If the electronic expansion valve is in a closed state, the fixed-frequency compressor is controlled to be turned on to further increase the working environment temperature value.

[0080] In this embodiment, the working environment temperature value can be further increased by controlling the fixed-frequency compressor to start up and combining the temperature control measure of opening the electronic expansion valve.

[0081] In some embodiments, after obtaining the working environment temperature value of the target area, the method further includes:

[0082] Monitor the change range of the working environment temperature value of the target area within a preset time period, and dynamically adjust the minimum temperature threshold and / or the maximum temperature threshold according to the change range.

[0083] In this embodiment, the temperature difference threshold is dynamically adjusted by monitoring the operating environment temperature of the target area in real time or periodically. For example, if a significant change in the operating environment temperature is detected within a minute, the minimum and / or maximum temperature thresholds are modified to reduce the frequent adjustment of the electronic expansion valve, thereby improving system stability and saving power.

[0084] All of the above optional technical solutions can be combined in any way to form optional embodiments of the present application, and will not be described in detail here.

[0085] During specific implementation, the present application is not limited by the execution order of the various steps described. If no conflict occurs, some steps can be performed in other orders or simultaneously.

[0086] As can be seen from the above, the temperature control method provided in the embodiment of the present application obtains the working environment temperature value of the target area; calculates the temperature difference between the working environment temperature value and the preset temperature value; calculates the driving parameter value for adjusting the opening and closing degree of the electronic expansion valve based on the temperature difference and the preset parameter determination algorithm; and dynamically controls the opening and closing degree of the electronic expansion valve based on the driving parameter value so that the decreasing rate of the working environment temperature value is in a stable or tending to stable state before triggering the electronic expansion valve to close. Using the temperature control method provided in the embodiment of the present application, an electronic expansion valve is used to replace the traditional mechanical expansion valve, and the electronic expansion valve is used to adjust the opening and closing degree according to the change of the working environment temperature of the refrigeration equipment, thereby achieving more precise temperature control. In addition, during the process of the working environment temperature value of the refrigeration equipment decreasing, by gradually adjusting the opening and closing degree of the electronic expansion valve, the inertia effect of the refrigerant is effectively alleviated until the decreasing rate of the working environment temperature is in a stable or tending to stable state, thereby avoiding the problem of continuous temperature drop caused by the inertia effect of the refrigerant after the compressor is turned off.

[0087] An embodiment of the present application further provides a temperature control device, which can be integrated into an electronic device.

[0088] See also Figure 2 , Figure 2 This is a schematic diagram of the structure of the temperature control device provided in an embodiment of the present application. The temperature control device 30 may include:

[0089] The data acquisition module 31 is used to obtain the working environment temperature value of the target area;

[0090] A first calculation module 32 is used to calculate the temperature difference between the working environment temperature value and the preset temperature value;

[0091] A second calculation module 33 is configured to calculate a driving parameter value for adjusting the opening and closing degree of the electronic expansion valve according to the temperature difference and a preset parameter determination algorithm;

[0092] The temperature control module 34 is used to dynamically control the opening and closing degree of the electronic expansion valve according to the driving parameter value, so that the decreasing speed of the working environment temperature value is stable or tends to be stable before triggering the electronic expansion valve to close.

[0093] In some embodiments, the second calculation module 33 is used to determine the temperature difference; construct a proportional term for responding to the change of the temperature difference based on the temperature difference; construct an integral term for eliminating steady-state errors based on the accumulated value of the temperature difference; construct a differential term for predicting future changes in the temperature difference based on the rate of change of the temperature difference; and perform PID calculation on the opening and closing degree of the electronic expansion valve through the proportional term, integral term and differential term to obtain a driving parameter value for adjusting the opening and closing degree of the electronic expansion valve.

[0094] In some embodiments, the temperature control module 34 is configured to control the electronic expansion valve to close according to the driving parameter value, wherein the temperature difference corresponding to the driving parameter value is less than a preset minimum temperature threshold.

[0095] In some embodiments, the temperature control module 34 is configured to control the opening of the electronic expansion valve according to the driving parameter value, wherein the temperature difference corresponding to the driving parameter value is greater than a preset maximum temperature threshold.

[0096] In some embodiments, the device also includes a compressor control module, which is used to control the fixed-frequency compressor to be turned off if the electronic expansion valve is in a closed state, so as to further prevent the working environment temperature value from dropping; if the electronic expansion valve is in an open state, the fixed-frequency compressor is controlled to be turned on, so as to further increase the working environment temperature value.

[0097] In some embodiments, the device further includes a threshold adjustment module for monitoring the change in the working environment temperature value of the target area within a preset time period, and dynamically adjusting the minimum temperature threshold and / or the maximum temperature threshold according to the change.

[0098] During specific implementation, the above modules can be implemented as independent entities, or can be arbitrarily combined to be implemented as the same entity or several entities.

[0099] As can be seen from the above, the temperature control device 30 provided in the embodiment of the present application, wherein the data acquisition module 31 is used to obtain the working environment temperature value of the target area; the first calculation module 32 is used to calculate the temperature difference between the working environment temperature value and the preset temperature value; the second calculation module 33 is used to calculate the driving parameter value for adjusting the opening and closing degree of the electronic expansion valve based on the temperature difference and the preset parameter determination algorithm; the temperature control module 34 is used to dynamically control the opening and closing degree of the electronic expansion valve based on the driving parameter value, so that the decreasing speed of the working environment temperature value is in a stable or stable state before triggering the electronic expansion valve to close. The temperature control device 30 provided in the embodiment of the present application adopts an electronic expansion valve to replace the traditional mechanical expansion valve, and utilizes the characteristic of the electronic expansion valve that can adaptively adjust the opening and closing degree according to the working environment temperature changes of the refrigeration equipment to achieve more precise temperature control. Moreover, as the working environment temperature of the refrigeration equipment drops, the inertia effect of the refrigerant is effectively alleviated by gradually adjusting the opening and closing degree of the electronic expansion valve until the rate of decrease in the working environment temperature is stable or tends to be stable, thereby avoiding the problem of continuous temperature drop due to the inertia effect of the refrigerant after the compressor is turned off.

[0100] An embodiment of the present application further provides a temperature control device, which can be integrated into an electronic device.

[0101] During specific implementation, the above modules can be implemented as independent entities, or can be arbitrarily combined to be implemented as the same entity or several entities.

[0102] See also Figure 3 , Figure 3 This is another schematic diagram of the structure of a temperature control device provided in an embodiment of the present application. The temperature control device 30 includes a memory 120, one or more processors 180, and one or more application programs, wherein the one or more application programs are stored in the memory 120 and configured to be executed by the processor 180; the processor 180 may include a data acquisition module 31, a first calculation module 32, a second calculation module 33, and a temperature control module 34. For example, the structure and connection relationship of the above components can be as follows:

[0103] The memory 120 can be used to store applications and data. The applications stored in the memory 120 include executable code. The applications can be composed of various functional modules. The processor 180 executes various functional applications and data processing by running the applications stored in the memory 120. In addition, the memory 120 may include high-speed random access memory and non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device. Accordingly, the memory 120 may also include a memory controller to provide the processor 180 with access to the memory 120.

[0104] Processor 180 is the control center of the device, connecting all components of the terminal using various interfaces and circuits. It executes or manages the various functions of the device and processes data by running or executing applications stored in memory 120 and accessing data stored in memory 120, thereby monitoring the entire device. Optionally, processor 180 may include one or more processing cores; preferably, processor 180 integrates an application processor and a modem processor, with the application processor primarily handling the operating system, user interface, and application programs.

[0105] Specifically, in this embodiment, the processor 180 loads the executable code corresponding to one or more application processes into the memory 120 according to the following instructions, and the processor 180 runs the application stored in the memory 120 to implement various functions:

[0106] Data acquisition instruction, used to obtain the working environment temperature value of the target area;

[0107] A first calculation instruction is used to calculate the temperature difference between the working environment temperature value and the preset temperature value;

[0108] a second calculation instruction for calculating a driving parameter value for adjusting the opening and closing degree of the electronic expansion valve according to the temperature difference and a preset parameter determination algorithm;

[0109] The temperature control instruction is used to dynamically control the opening and closing degree of the electronic expansion valve according to the driving parameter value, so that the decreasing speed of the working environment temperature value is stable or tends to be stable before triggering the electronic expansion valve to close.

[0110] In some embodiments, the second calculation instruction is used to determine the temperature difference; construct a proportional term for responding to changes in the temperature difference based on the temperature difference; construct an integral term for eliminating steady-state errors based on the accumulated value of the temperature difference; construct a differential term for predicting future changes in the temperature difference based on the rate of change of the temperature difference; and perform PID calculation on the opening and closing degree of the electronic expansion valve through the proportional term, integral term, and differential term to obtain a driving parameter value for adjusting the opening and closing degree of the electronic expansion valve.

[0111] In some embodiments, the temperature control instruction is used to control the electronic expansion valve to close according to the driving parameter value, wherein the temperature difference corresponding to the driving parameter value is less than a preset minimum temperature threshold.

[0112] In some embodiments, the temperature control instruction is used to control the opening of the electronic expansion valve according to the driving parameter value, wherein the temperature difference corresponding to the driving parameter value is greater than a preset maximum temperature threshold.

[0113] In some embodiments, the program also includes a compressor control instruction, which is used to control the fixed-frequency compressor to be turned off if the electronic expansion valve is in a closed state, so as to further prevent the working environment temperature value from dropping; if the electronic expansion valve is in an open state, the fixed-frequency compressor is controlled to be turned on, so as to further increase the working environment temperature value.

[0114] In some embodiments, the program further includes a threshold adjustment instruction for monitoring the change in the working environment temperature value of the target area within a preset time period, and dynamically adjusting the minimum temperature threshold and / or the maximum temperature threshold according to the change.

[0115] The present application also provides an electronic device. Figure 4 , Figure 4 The electronic device 1200 is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application, which can be used to implement the temperature control method provided in the above embodiment. The electronic device 1200 can be an air conditioner or a refrigerator.

[0116] like Figure 4 As shown, the electronic device 1200 may include an RF (Radio Frequency) circuit 110, a memory 120 including one or more (only one is shown in the figure) computer-readable storage media, an input unit 130, a display unit 140, a sensor 150, an audio circuit 160, a transmission module 170, a processor 180 including one or more (only one is shown in the figure) processing cores, and a power supply 190. Those skilled in the art will understand that Figure 4The structure of the electronic device 1200 shown in the figure does not constitute a limitation on the electronic device 1200, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0117] The RF circuit 110 is used to receive and transmit electromagnetic waves, converting them into electrical signals, thereby enabling communication with a communication network or other televisions. The RF circuit 110 may include various existing circuit components for performing these functions, such as an antenna, a radio frequency transceiver, a digital signal processor, an encryption / decryption chip, a subscriber identity module (SIM) card, and memory. The RF circuit 110 can communicate with various networks such as the Internet, an intranet, or a wireless network, or with other televisions via a wireless network.

[0118] The memory 120 can be used to store software programs and modules, such as the program instructions / modules corresponding to the temperature control method in the above-mentioned embodiment. The processor 180 executes various functional applications and data processing by running the software programs and modules stored in the memory 120. It can automatically select the vibration reminder mode to perform temperature control according to the current scene of the electronic device. This can not only ensure that scenes such as meetings are not disturbed, but also ensure that the user can feel the incoming call, thereby improving the intelligence of the electronic device. The memory 120 may include a high-speed random access memory and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 120 may further include a memory remotely located relative to the processor 180, and these remote memories can be connected to the electronic device 1200 via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0119] The input unit 130 can be used to receive input digital or character information and generate keyboard, mouse, joystick, optical, or trackball signal input related to user settings and function control. Specifically, the input unit 130 may include a touch-sensitive surface 131 and other input devices 132. The touch-sensitive surface 131, also known as a touch display or touchpad, can detect user touch operations on or near it (for example, operations performed by a user using a finger, stylus, or any other suitable object or accessory on or near the touch-sensitive surface 131) and drive corresponding connected devices according to a pre-set program. Optionally, the touch-sensitive surface 131 may include a touch detection device and a touch controller. The touch detection device detects the user's touch position and detects signals generated by the touch operation, transmitting the signals to the touch controller. The touch controller receives touch information from the touch detection device, converts it into touch point coordinates, and then sends it to the processor 180. It can also receive and execute commands sent by the processor 180. In addition, the touch-sensitive surface 131 can be implemented using various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch-sensitive surface 131, the input unit 130 can also include other input devices 132. Specifically, the other input devices 132 can include, but are not limited to, one or more of a physical keyboard, function keys (such as a volume control button, a power button, etc.), a trackball, a mouse, a joystick, and the like.

[0120] The display unit 140 can be used to display information input by the user or information provided to the user and various graphical user interfaces of the electronic device 1200. These graphical user interfaces can be composed of graphics, text, icons, videos and any combination thereof. The display unit 140 may include a display panel 141. Optionally, the display panel 141 may be configured in the form of LCD (Liquid Crystal Display), OLED (Organic Light-Emitting Diode), etc. Further, the touch-sensitive surface 131 may cover the display panel 141. When the touch-sensitive surface 131 detects a touch operation on or near it, it is transmitted to the processor 180 to determine the type of touch event. The processor 180 then provides corresponding visual output on the display panel 141 according to the type of touch event. Although in Figure 4 In the embodiment, the touch-sensitive surface 131 and the display panel 141 are implemented as two independent components to implement input and output functions. However, in some embodiments, the touch-sensitive surface 131 and the display panel 141 can be integrated to implement input and output functions.

[0121] The electronic device 1200 may also include at least one sensor 150, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display panel 141 according to the brightness of the ambient light, and the proximity sensor may turn off the display panel 141 and / or the backlight when the electronic device 1200 is moved to the ear. As a type of motion sensor, the gravity acceleration sensor can detect the magnitude of acceleration in all directions (generally three axes), and can detect the magnitude and direction of gravity when stationary. It can be used for applications that recognize the posture of the mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), etc.; as for other sensors that the electronic device 1200 can also be configured with, such as gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., they will not be described here.

[0122] The audio circuit 160, speaker 161, and microphone 162 provide an audio interface between the user and the electronic device 1200. The audio circuit 160 can convert received audio data into electrical signals and transmit them to the speaker 161, which then converts the signals into sound signals for output. Furthermore, the microphone 162 converts the collected sound signals into electrical signals, which are then received by the audio circuit 160 and converted into audio data. The audio data is then processed by the output processor 180 and transmitted to, for example, another terminal via the RF circuit 110, or the audio data is output to the memory 120 for further processing. The audio circuit 160 may also include an earphone jack to provide communication between an external headset and the electronic device 1200.

[0123] The electronic device 1200 can help users send and receive emails, browse web pages, and access streaming media through the transmission module 170 (such as a Wi-Fi module), which provides users with wireless broadband Internet access. Figure 4 The transmission module 170 is shown, but it is understandable that it is not an essential component of the electronic device 1200 and can be omitted as needed without changing the essence of the invention.

[0124] Processor 180 is the control center of electronic device 1200. It connects all components of the phone using various interfaces and circuits. By running or executing software programs and / or modules stored in memory 120 and accessing data stored in memory 120, it executes various functions of electronic device 1200 and processes data, thereby providing overall monitoring of the phone. Optionally, processor 180 may include one or more processing cores. In some embodiments, processor 180 may integrate an application processor and a modem processor. The application processor primarily handles the operating system, user interface, and application programs, while the modem processor primarily handles wireless communications. It is understood that the modem processor may not be integrated into processor 180.

[0125] Electronic device 1200 also includes a power supply 190 for supplying power to various components. In some embodiments, the power supply can be logically connected to processor 180 via a power management system, thereby enabling the power management system to manage discharge and power consumption. Power supply 190 can also include any components such as one or more DC or AC power supplies, a recharging system, a power failure detection circuit, a power converter or inverter, and a power status indicator.

[0126] Although not shown, the electronic device 1200 may further include a camera (such as a front camera, a rear camera), a Bluetooth module, etc., which will not be described in detail here. Specifically, in this embodiment, the display unit 140 of the electronic device 1200 is a touch screen display, and the electronic device 1200 further includes a memory 120 and one or more programs, wherein the one or more programs are stored in the memory 120 and are configured to be executed by the one or more processors 180. The one or more programs include instructions for performing the following operations:

[0127] Data acquisition instruction, used to obtain the working environment temperature value of the target area;

[0128] A first calculation instruction is used to calculate the temperature difference between the working environment temperature value and the preset temperature value;

[0129] a second calculation instruction for calculating a driving parameter value for adjusting the opening and closing degree of the electronic expansion valve according to the temperature difference and a preset parameter determination algorithm;

[0130] The temperature control instruction is used to dynamically control the opening and closing degree of the electronic expansion valve according to the driving parameter value, so that the decreasing speed of the working environment temperature value is stable or tends to be stable before triggering the electronic expansion valve to close.

[0131] In some embodiments, the second calculation instruction is used to determine the temperature difference; construct a proportional term for responding to changes in the temperature difference based on the temperature difference; construct an integral term for eliminating steady-state errors based on the accumulated value of the temperature difference; construct a differential term for predicting future changes in the temperature difference based on the rate of change of the temperature difference; and perform PID calculation on the opening and closing degree of the electronic expansion valve through the proportional term, integral term, and differential term to obtain a driving parameter value for adjusting the opening and closing degree of the electronic expansion valve.

[0132] In some embodiments, the temperature control instruction is used to control the electronic expansion valve to close according to the driving parameter value, wherein the temperature difference corresponding to the driving parameter value is less than a preset minimum temperature threshold.

[0133] In some embodiments, the temperature control instruction is used to control the opening of the electronic expansion valve according to the driving parameter value, wherein the temperature difference corresponding to the driving parameter value is greater than a preset maximum temperature threshold.

[0134] In some embodiments, the program also includes a compressor control instruction, which is used to control the fixed-frequency compressor to be turned off if the electronic expansion valve is in a closed state, so as to further prevent the working environment temperature value from dropping; if the electronic expansion valve is in an open state, the fixed-frequency compressor is controlled to be turned on, so as to further increase the working environment temperature value.

[0135] In some embodiments, the program further includes a threshold adjustment instruction for monitoring the change in the working environment temperature value of the target area within a preset time period, and dynamically adjusting the minimum temperature threshold and / or the maximum temperature threshold according to the change.

[0136] The embodiment of the present application further provides an electronic device, which may be a refrigerator, an air conditioner, or the like.

[0137] As can be seen from the above, an embodiment of the present application provides an electronic device 1200, which performs the following steps:

[0138] Get the working environment temperature value of the target area;

[0139] Calculating the temperature difference between the working environment temperature value and the preset temperature value;

[0140] Calculating a driving parameter value for adjusting the opening and closing degree of the electronic expansion valve according to the temperature difference and a preset parameter determination algorithm;

[0141] The opening and closing degree of the electronic expansion valve is dynamically controlled according to the driving parameter value, so that the decreasing speed of the working environment temperature value is stable or tends to be stable before triggering the electronic expansion valve to close.

[0142] An embodiment of the present application further provides a storage medium, wherein the storage medium stores a computer program. When the computer program is executed on a computer, the computer performs the following steps:

[0143] Get the working environment temperature value of the target area;

[0144] Calculating the temperature difference between the working environment temperature value and the preset temperature value;

[0145] Calculating a driving parameter value for adjusting the opening and closing degree of the electronic expansion valve according to the temperature difference and a preset parameter determination algorithm;

[0146] The opening and closing degree of the electronic expansion valve is dynamically controlled according to the driving parameter value, so that the decreasing speed of the working environment temperature value is stable or tends to be stable before triggering the electronic expansion valve to close.

[0147] It should be noted that, for the temperature control method described in this application, ordinary testers in this field can understand that all or part of the process of implementing the temperature control method described in the embodiment of this application can be completed by controlling the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, such as a memory of an electronic device, and executed by at least one processor in the electronic device. During the execution process, the process of the embodiment of the temperature control method may be included. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only memory (ROM), a random access memory (RAM), etc.

[0148] For the temperature control device of the embodiment of the present application, its various functional modules can be integrated into a single processing chip, or each module can exist physically separately, or two or more modules can be integrated into a single module. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software functional modules. If the integrated modules are implemented in the form of software functional modules and sold or used as independent products, they can also be stored in a computer-readable storage medium, such as a read-only memory, a magnetic disk, or an optical disk.

[0149] The temperature control method, device, medium, and equipment provided in the embodiments of the present application are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only intended to help understand the method and core concept of the present application. At the same time, those skilled in the art may vary in the specific implementation methods and application scope based on the concept of the present application. In summary, the contents of this specification should not be construed as limiting the present application.

Claims

1. A temperature control method, applied to refrigeration equipment, characterized in that: include: Get the working environment temperature value of the target area; Calculating the temperature difference between the working environment temperature value and a preset temperature value; Calculating a driving parameter value for adjusting the opening and closing degree of the electronic expansion valve according to the temperature difference and a preset parameter determination algorithm; The opening and closing degree of the electronic expansion valve is dynamically controlled according to the driving parameter value, so that the decreasing speed of the working environment temperature value is in a stable or stable state before triggering the electronic expansion valve to close.

2. The temperature control method according to claim 1, characterized in that: The step of calculating the driving parameter value for adjusting the opening and closing degree of the electronic expansion valve according to the temperature difference and a preset parameter determination algorithm includes: determining the temperature difference; Constructing a proportional term for responding to a change in the temperature difference according to the temperature difference; constructing an integral term for eliminating steady-state errors according to the accumulated value of the temperature difference; constructing a differential term for predicting future changes in the temperature difference according to the rate of change of the temperature difference; The PID calculation is performed on the opening and closing degree of the electronic expansion valve through the proportional term, the integral term and the differential term to obtain a driving parameter value for adjusting the opening and closing degree of the electronic expansion valve.

3. The temperature control method according to claim 2, characterized in that: The driving parameters include a driving voltage or a driving current for controlling the opening and closing degree of the electronic expansion valve.

4. The temperature control method according to claim 1, characterized in that: The dynamically controlling the opening and closing degree of the electronic expansion valve according to the driving parameter value includes: The electronic expansion valve is controlled to close according to the driving parameter value, wherein the temperature difference corresponding to the driving parameter value is less than a preset minimum temperature threshold.

5. The temperature control method according to claim 4, characterized in that: The dynamically controlling the opening and closing degree of the electronic expansion valve according to the driving parameter value includes: The electronic expansion valve is controlled to open according to the driving parameter value, wherein the temperature difference corresponding to the driving parameter value is greater than a preset maximum temperature threshold.

6. The temperature control method according to claim 4 or 5, characterized in that: After dynamically controlling the opening and closing degree of the electronic expansion valve according to the driving parameter value, the method further includes: If the electronic expansion valve is in a closed state, the fixed-frequency compressor is controlled to be closed to further prevent the working environment temperature from decreasing; If the electronic expansion valve is in an open state, the fixed-frequency compressor is controlled to start, so as to further increase the working environment temperature value.

7. The temperature control method according to claim 5, characterized in that: After obtaining the working environment temperature value of the target area, the method further includes: Monitor the change range of the working environment temperature value of the target area within a preset time period, and dynamically adjust the minimum temperature threshold and / or the maximum temperature threshold according to the change range.

8. A temperature control device, applied to refrigeration equipment, characterized in that: The temperature control device comprises: A data acquisition module is used to obtain the working environment temperature value of the target area; A first calculation module, used to calculate the temperature difference between the working environment temperature value and the preset temperature value; A second calculation module, used to calculate a driving parameter value for adjusting the opening and closing degree of the electronic expansion valve according to the temperature difference and a preset parameter determination algorithm; The temperature control module is used to dynamically control the opening and closing degree of the electronic expansion valve according to the driving parameter value, so that the decreasing speed of the working environment temperature value is stable or tends to be stable before triggering the electronic expansion valve to close.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a plurality of instructions, and the instructions are suitable for being loaded by a processor to execute the temperature control method according to any one of claims 1 to 7.

10. An electronic device, characterized in that: It comprises a processor and a memory, wherein the memory stores a plurality of instructions, and the processor loads the instructions to execute the temperature control method according to any one of claims 1 to 7.

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