Temperature control method, apparatus, medium, and device

Abstract

The embodiment of the application provides a temperature control method, device, medium and equipment, the method obtains the working environment temperature value of a target area; calculates the temperature difference value between the working environment temperature value and a preset temperature value; determines the driving parameter value for adjusting the opening degree of an electronic expansion valve according to the temperature difference value and a preset parameter determination algorithm; and dynamically controls the opening degree of the electronic expansion valve according to the driving parameter value, so that the descending speed of the working environment temperature value is in a stable or tending-to-stable state before triggering the closing of the electronic expansion valve. The embodiment gradually adjusts the opening degree of the electronic expansion valve, effectively alleviates the inertia effect of the refrigerant, and until the descending speed 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 closed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of temperature control, in particular to the technical field of temperature control, and specifically to a temperature control method, device, medium and equipment. BACKGROUND

[0002] Some economical refrigeration equipment on the market, such as fixed-frequency refrigerators or fixed-frequency air conditioners, generally use fixed-frequency compressors and mechanical expansion valves to achieve refrigeration function in order to reduce production costs. Although this configuration reduces costs, it lacks self-adaptive adjustment function due to the fixed-frequency compressor, and the mechanical expansion valve can only provide full-on or full-off working state, which leads to the difficulty of maintaining stable state of the working temperature of the refrigeration equipment. Especially when the mechanical expansion valve reaches the closing condition, due to the inertia effect of the refrigerant, the refrigerant continues to circulate in the system, which may cause the working temperature of the refrigeration equipment to continue to drop, and eventually the working temperature of the refrigeration equipment is still below the expected temperature even if the fixed-frequency compressor and the mechanical expansion valve are closed, thereby affecting the user experience. SUMMARY

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

[0004] In one aspect, the embodiments of the present application provide a temperature control method applied to a refrigeration equipment, the method comprising:

[0005] obtaining a working environment temperature value of a target area;

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

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

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

[0009] Further, in the temperature control method described in the embodiments of the present application, the determination of the driving parameter value for adjusting the opening degree of the electronic expansion valve according to the temperature difference value and the preset parameter determination algorithm comprises:

[0010] determining the temperature difference value;

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

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

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

[0014] performing PID calculation on the opening 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 degree of the electronic expansion valve.

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

[0016] Further, in the temperature control method described in the embodiments of the present application, the dynamic control of the opening degree of the electronic expansion valve according to the driving parameter value includes:

[0017] controlling 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.

[0018] Further, in the temperature control method described in the embodiments of the present application, the dynamic control of the opening degree of the electronic expansion valve according to the driving parameter value includes:

[0019] controlling the electronic expansion valve 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] Further, in the temperature control method described in the embodiments of the present application, after the dynamic control of the opening 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, controlling the fixed-frequency compressor to close to further prevent the working environment temperature value from falling;

[0022] if the electronic expansion valve is in an open state, controlling the fixed-frequency compressor to open to further increase the working environment temperature value.

[0023] Further, in the temperature control method described in the embodiments of the present application, after the working environment temperature value of the target area is obtained, the method further includes:

[0024] monitoring the change amplitude of 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 amplitude.

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

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

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

[0028] a title matching module configured to perform matching processing on each of the video links and each of the video titles based on the first video identification information and the second video identification information;

[0029] an information display module configured to display a target video link and a target video title that have completed the matching in the current page.

[0030] Accordingly, another aspect of the embodiments of the present application further provides a computer storage medium storing a plurality of instructions, which are adapted to be loaded by a processor to execute the temperature control method as described above.

[0031] Accordingly, another aspect of the embodiments of the present application further provides an electronic device comprising 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 embodiments of the present application provide a temperature control method, device, medium and equipment. The method comprises the following steps: obtaining 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; determining a driving parameter value for adjusting the opening degree of an electronic expansion valve according to the temperature difference value and a preset parameter algorithm; and dynamically controlling the opening degree of the electronic expansion valve according to the driving parameter value, so that the descending speed of the working environment temperature value is stable or tends to be stable before the electronic expansion valve is triggered to be closed. By using the temperature control method provided by the embodiments of the present application, the electronic expansion valve is used to replace the traditional mechanical expansion valve, and the characteristics of the electronic expansion valve that can adjust the opening degree according to the working environment temperature change of the refrigeration equipment are used to achieve more precise temperature control. In actual application, when the working environment temperature value of the refrigeration equipment is in a descending process, the opening degree of the electronic expansion valve can be gradually adjusted to effectively alleviate the inertial effect of the refrigerant until the descending speed of the working environment temperature is stable or tends to be stable, thereby avoiding the problem of continuous temperature drop caused by the inertial effect of the refrigerant after the compressor is closed. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort based on these drawings.

[0034] Figure 1 The flowchart of the temperature control method provided by the embodiments of the present application.

[0035] Figure 2 The structural diagram of the temperature control device provided by the embodiments of the present application.

[0036] Figure 3 Another structural diagram of the temperature control device provided by the embodiments of the present application.

[0037] Figure 4 The structural diagram of the electronic device provided by the embodiments of the present application. DETAILED DESCRIPTION

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

[0039] The embodiments of the present application provide a temperature control method, which uses an electronic expansion valve to replace a traditional mechanical expansion valve. The electronic expansion valve can adjust the opening degree according to the working environment temperature of the refrigeration equipment, so as to realize more precise temperature control. In addition, during the process of the working environment temperature of the refrigeration equipment decreasing, the opening degree of the electronic expansion valve is gradually adjusted, so as to effectively alleviate the inertia effect of the refrigerant, until the decreasing speed of the working environment temperature is stable or tends to be stable, thereby avoiding the problem of continuous temperature decrease caused by the inertia effect of the refrigerant after the compressor is turned off.

[0040] The term "and / or" in the present application can be a description of the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and / or B, which can represent the following three cases: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in the present application generally represents an "or" relationship between the front and rear associated objects.

[0041] The terms "first", "second", and the like in the description and in the claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or television set including a series of steps or modules does not necessarily have to be limited to the steps or modules clearly listed, but can include other steps or modules not clearly listed or inherent to the process, method, product, or television set. The naming or numbering of the steps in the present application does not mean that the steps in the method flow must be performed in the order / time sequence indicated by the naming or numbering, and the flow steps that have been named or numbered can change the order of execution according to the technical purpose to be achieved, as long as the same or similar technical effects can be achieved. The division of modules in the present application is a logical division, and in actual application, there can be another division method, for example, a plurality of modules can be combined or integrated into another system, or some features can be ignored or not executed, in addition, the coupling or direct coupling or communication connection between the displayed or discussed modules can be through some interface, the indirect coupling or communication connection between the modules can be electrical or other similar forms, which are not limited in the present application. In addition, the modules or sub-modules described as separate components can or can not be physically separated, can or can not be physical modules, or can be distributed to multiple circuit modules, and some or all of the modules can be selected according to actual needs to achieve the purpose of the present application.

[0042] The temperature control method related by the embodiments of the present application is mainly applied to electronic equipment, which can be a refrigerator, an air conditioner, a smart phone, a tablet computer, a notebook computer, a desktop computer, and a server, etc., which are not limited herein. Alternatively, the server can be a stand-alone 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 Internet of Things televisions, or a cloud server that provides basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communication, middleware services, domain name services, security services, CDN (Content Delivery Network), and big data and artificial intelligence platforms, which are not limited herein.

[0043] For ease of understanding, the specific processes in the embodiments of the present application are described below, please refer to Figure 1 , Figure 1An embodiment flowchart of a temperature control method provided by the embodiments of the present application is shown.

[0044] In Figure 1 In the embodiment shown, the method can be applied to a refrigeration device, such as a refrigerator or an air conditioner, and the method specifically includes the following steps:

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

[0046] In this embodiment, the refrigeration device is taken as an example of a refrigerator, and the corresponding target area can be a refrigeration chamber inside the refrigerator. A temperature detection device such as a temperature sensor is used to obtain a working environment temperature value of the environment in which the refrigeration chamber is located in real time or at regular intervals. Based on the working environment temperature value, the current working state of the refrigeration chamber can be analyzed, such as whether the working environment temperature value is too high or too low or normal, and then the corresponding working state is analyzed according to different working environment temperature values. For example, when the working environment temperature value is too high, the internal temperature of the refrigeration chamber can be lowered to restore it to a normal working environment temperature value; when the working environment temperature value is too low, the internal temperature of the refrigeration chamber can be raised to restore it to a normal working environment temperature value.

[0047] S102, calculating a temperature difference value 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 the normal working state of the refrigeration device, which can be a default value set at the factory or a value set by a user. For example, a user can set the preset temperature value of the refrigeration chamber of the refrigerator to 5°C, and detect in real time or at regular intervals whether there is a difference between the current working environment temperature value of the refrigeration chamber and the preset temperature value. Specifically, the working environment temperature value can be subtracted from the preset temperature value to calculate the temperature difference value between the working environment temperature value and the preset temperature value, and then the current working state of the refrigeration chamber is analyzed. For example, when the current working environment temperature value of the refrigeration chamber is measured to be 10°C, the corresponding temperature difference value is 10 minus 5, which equals 5. Assuming that the upper limit value of the temperature difference value is 3, the calculated temperature difference value obviously exceeds the set upper limit value, indicating that the current working environment temperature of the refrigeration chamber is too high, and appropriate temperature control measures need to be taken in a timely manner to lower the internal temperature of the refrigeration chamber to restore it to a normal working environment temperature value, i.e., to control the temperature difference value below the upper limit value. Similarly, when the current working environment temperature value of the refrigeration chamber is measured to be 0°C, the corresponding temperature difference value is 0 minus 5, which equals -5. Assuming that the lower limit value of the temperature difference value is -2, the calculated temperature difference value is obviously lower than the set lower limit value, indicating that the current working environment temperature of the refrigeration chamber is too low, and appropriate temperature control measures need to be taken in a timely manner to raise the internal temperature of the refrigeration chamber to restore it to a normal working environment temperature value, i.e., to control the temperature difference value above the lower limit value.

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

[0050] In the embodiment, the electronic expansion valve is used to replace the traditional mechanical expansion valve, and a driving parameter value for adjusting the opening degree of the electronic expansion valve is calculated according to the temperature difference and a preset parameter determination algorithm. The electronic expansion valve can adaptively adjust the opening degree according to the working environment temperature of the refrigeration equipment, so as to realize more precise temperature control.

[0051] It should be explained that the electronic expansion valve and the mechanical expansion valve are two commonly used throttling devices in the refrigeration system. Both of them are used to adjust the flow of refrigerant, but there are significant differences in working principle and characteristics. The mechanical expansion valve usually relies on spring force and pressure difference of refrigerant to control the opening and closing of the valve. It adjusts the opening degree of the valve by sensing the pressure change of the refrigerant, so as to control the flow of the refrigerant. The mechanical expansion valve generally has only two working states, i.e. fully open and fully closed, and lacks intermediate adjustment capability. The electronic expansion valve adjusts the opening degree of the valve through electronic signals to control the stepping motor or servo motor, so as to accurately adjust the opening degree of the valve. It can realize any opening degree from fully closed to fully open, so as to more precisely control 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 degree of the electronic expansion valve, or other types of driving parameters, which are not limited here.

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

[0054] It needs to be explained that the present scheme is mainly aimed at some economic refrigeration equipment on the market at present, such as fixed-frequency refrigerator or fixed-frequency air conditioner. In order to reduce production cost, the refrigeration equipment generally adopts the configuration of fixed-frequency compressor and mechanical expansion valve to realize refrigeration function. Although this configuration reduces the cost, it causes the working temperature of the refrigeration equipment to be difficult to maintain a stable state due to the lack of self-adaptive adjustment function of the fixed-frequency compressor and the full-on or full-off working state provided by the mechanical expansion valve. Especially when the mechanical expansion valve reaches the closing condition, due to the inertial effect of the refrigerant (i.e. refrigerant), the refrigerant continues to circulate in the refrigeration system, which may cause the working temperature of the refrigeration equipment to continue to drop, and eventually the working temperature of the refrigeration equipment is below the expected temperature even if the compressor and the expansion valve are closed, thereby affecting the user experience. In order to solve the above problems, in the present embodiment, the traditional mechanical expansion valve is replaced by an electronic expansion valve, which can adaptively adjust the opening degree according to the change of the working environment temperature of the refrigeration equipment, so as to realize more precise temperature control. And in the process of the working environment temperature value of the refrigeration equipment decreasing, by gradually adjusting the opening degree of the electronic expansion valve, the inertial effect of the refrigerant is effectively alleviated, until the descending speed of the working environment temperature is stable or tends to be stable, thereby avoiding the problem of continuous temperature drop caused by the inertial effect of the refrigerant after the compressor is closed.

[0055] In some embodiments, the driving parameter value for adjusting the opening degree of the electronic expansion valve is calculated according to the temperature difference value and a preset parameter determination algorithm, comprising:

[0056] determining the temperature difference value;

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

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

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

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

[0061] It needs to be explained that PID (proportional-integral-differential) algorithm is a feedback control algorithm applied in industrial control system. It adjusts the control input to reduce the deviation between the process variable (such as temperature, pressure, position, etc.) and the desired value. The PID controller mainly consists of three parts: proportional term (P), integral term (I) and differential term (D), each part controls the different characteristics of the controlled process.

[0062] The basic principles and formulas of PID algorithm are as follows:

[0063] Proportional term (P): The role of the proportional term is to control according to the current error (i.e. temperature difference in this scheme). The greater the error, the stronger the role of the proportional term. The proportional term can quickly respond to errors, but usually leaves a steady-state error.

[0064] Integral term (I): The role of the integral term is to control according to the past error accumulation, with the purpose of eliminating steady-state error. The integral term can make the system eventually stable at the set value, but the response speed is slow, which may lead to system overshoot and oscillation.

[0065] Derivative term (D): The role of the derivative term is to perform predictive control according to the trend of error change (i.e. the derivative of error). The derivative term can predict the change of error, so as to adjust in advance and reduce overshoot.

[0066] The PID algorithm is expressed by 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] Where 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 derivative term coefficient; e k represents the error (i.e. temperature difference) collected at the kth time.

[0069] In the embodiment, the opening degree of the electronic expansion valve is calculated by the proportional term, the integral term and the differential term, and a driving parameter value for adjusting the opening degree of the electronic expansion valve, such as a driving voltage for controlling the opening degree of the electronic expansion valve, can be obtained. The PID algorithm can accurately calculate a control signal (such as a driving voltage) for adjusting the opening degree of the electronic expansion valve according to the temperature difference between the target area working environment temperature value and the preset temperature value. In this way, the matching degree between the output of the refrigeration equipment and the actual demand can be improved, the temperature fluctuation can be reduced, and the control accuracy can be improved. On the other hand, the use of the PID algorithm can convert the change process of the temperature difference into the form of the driving parameter such as the driving voltage, and then reasonably control the opening degree of the electronic expansion valve, so that the opening degree of the electronic expansion valve can be adjusted according to the change of the temperature difference. Compared with the traditional mechanical expansion valve directly closed mode, dynamically adjusting the opening degree of the electronic expansion valve is beneficial to the consumption of the refrigerant cooling capacity, and can effectively alleviate the inertial effect of the refrigerant, thereby avoiding the problem of continuous temperature drop after the compressor is turned off due to the inertial effect of the refrigerant.

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

[0071] controlling the electronic expansion valve to be closed 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 the embodiment, when the temperature difference corresponding to the driving parameter value is less than the preset minimum temperature threshold, it indicates that the working environment temperature of the target area is too low, and the electronic expansion valve is controlled to be completely closed to avoid the working environment temperature of the target area from continuing to drop.

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

[0074] controlling the electronic expansion valve to be opened 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 the embodiment, when the temperature difference corresponding to the driving parameter value is greater than the preset maximum temperature threshold, it indicates that the working environment temperature of the target area is too high, and the electronic expansion valve is controlled to be completely opened to reduce the working environment temperature of the target area and avoid the working environment temperature of the target area from continuing to rise.

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

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

[0078] In this embodiment, by controlling the fixed-frequency compressor to be closed, in combination with the temperature control measure of closing the electronic expansion valve, the working environment temperature value can be further prevented from decreasing.

[0079] If the electronic expansion valve is in the closed state, the fixed-frequency compressor is controlled to be closed to further prevent the working environment temperature value from decreasing.

[0080] In this embodiment, by controlling the fixed-frequency compressor to be closed, in combination with the temperature control measure of closing the electronic expansion valve, the working environment temperature value can be further prevented from decreasing.

[0081] In some embodiments, after the working environment temperature value of the target area is obtained, the method further comprises:

[0082] Monitoring the change amplitude of 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 amplitude.

[0083] In this embodiment, by monitoring the change of the working environment temperature of the target area in real time or at a fixed time, the temperature difference threshold is dynamically adjusted. For example, when it is detected that the working environment temperature changes greatly within 1 minute, the minimum temperature threshold and / or the maximum temperature threshold are modified to reduce the frequent adjustment of the electronic expansion valve, improve the stability of the system, and also save power consumption.

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

[0085] In specific implementation, the present application is not limited by the execution order of each step, and certain steps can also be performed in other order or simultaneously without conflict.

[0086] It can be learned from the above that the temperature control method provided in the embodiments of the present application obtains the working environment temperature value of a target area; calculates a temperature difference value between the working environment temperature value and a preset temperature value; calculates a driving parameter value for adjusting the opening degree of an electronic expansion valve according to the temperature difference value and a preset parameter determination algorithm; and dynamically controls the opening degree of the electronic expansion valve according to the driving parameter value, so that the descending speed of the working environment temperature value is in a stable or tending-to-stable state before the electronic expansion valve is triggered to be closed. By using the temperature control method provided in the embodiments of the present application, the electronic expansion valve is used to replace the traditional mechanical expansion valve, and the characteristics that the electronic expansion valve can adjust the opening degree according to the working environment temperature change of the refrigeration equipment are used to realize more fine temperature control. Moreover, in the process of the working environment temperature value of the refrigeration equipment descending, the opening degree of the electronic expansion valve is gradually adjusted, the inertial effect of the refrigerant is effectively relieved, and the descending speed of the working environment temperature is in a stable or tending-to-stable state until the temperature continues to descend due to the inertial effect of the refrigerant after the compressor is closed, thereby avoiding the problem.

[0087] The embodiments of the present application further provide a temperature control device, which can be integrated in an electronic device.

[0088] Please refer to Figure 2 , Figure 2 The structure schematic diagram of the temperature control device provided in the embodiments of the present application is shown. The temperature control device 30 can include:

[0089] The data acquisition module 31 is configured to obtain the working environment temperature value of a target area.

[0090] The first calculation module 32 is configured to calculate a temperature difference value between the working environment temperature value and a preset temperature value.

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

[0092] The temperature control module 34 is configured to dynamically control the opening degree of the electronic expansion valve according to the driving parameter value, so that the descending speed of the working environment temperature value is in a stable or tending-to-stable state before the electronic expansion valve is triggered to be closed.

[0093] In some embodiments, the second calculation module 33 is configured to determine the temperature difference value, construct a proportional term for responding to a change in the temperature difference value according to the temperature difference value, construct an integral term for eliminating steady-state error according to a cumulative value of the temperature difference value, and construct a differential term for predicting a future change in the temperature difference value according to a rate of change of the temperature difference value; and perform PID calculation on the opening degree of the electronic expansion valve through the proportional term, the integral term, and the differential term to obtain a drive parameter value for adjusting the opening 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 drive parameter value, where the temperature difference corresponding to the drive parameter value is less than a preset minimum temperature threshold.

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

[0096] In some embodiments, the device further comprises a compressor control module configured to control a fixed-frequency compressor to close if the electronic expansion valve is in a closed state, so as to further prevent the working environment temperature value from decreasing, and control the fixed-frequency compressor to open if the electronic expansion valve is in an open state, so as to further increase the working environment temperature value.

[0097] In some embodiments, the device further comprises a threshold adjustment module configured to monitor a change amplitude 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 amplitude.

[0098] In implementation, each of the above modules can be implemented as an independent entity, or can be combined as the same or several entities.

[0099] From the above, the temperature control device 30 provided by the embodiment of the present application, wherein the data acquisition module 31 is configured to acquire the working environment temperature value of the target region; the first calculation module 32 is configured to calculate the temperature difference value between the working environment temperature value and the preset temperature value; the second calculation module 33 is configured to calculate the driving parameter value for adjusting the opening degree of the electronic expansion valve according to the temperature difference value and the preset parameter determination algorithm; and the temperature control module 34 is configured to dynamically control the opening degree of the electronic expansion valve according to the driving parameter value, so that the descending speed of the working environment temperature value is in a stable or tending-to-stable state before triggering the electronic expansion valve to be closed. The temperature control device 30 provided by the embodiment of the present application replaces the traditional mechanical expansion valve with the electronic expansion valve, and utilizes the characteristic that the electronic expansion valve can adaptively adjust the opening degree according to the working environment temperature change of the refrigeration equipment, to realize more precise temperature control. Moreover, in the process of the working environment temperature value of the refrigeration equipment descending, the opening degree of the electronic expansion valve is gradually adjusted, so as to effectively alleviate the inertial effect of the refrigerant, until the descending speed of the working environment temperature is in a stable or tending-to-stable state, thereby avoiding the problem that the temperature continuously descends due to the inertial effect of the refrigerant after the compressor is closed.

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

[0101] In the implementation, the above various modules can be realized as independent entities, or can be combined as the same or several entities.

[0102] Please refer to Figure 3 , Figure 3 Another structural diagram of the temperature control device provided by the embodiment of the present application is shown in FIG. 2. 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 can 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 various 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 codes. The applications can constitute 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 can include a high-speed random access memory, and can also include a non-volatile memory such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state memory device. Accordingly, the memory 120 can also include a memory controller to provide the processor 180 with access to the memory 120.

[0104] The processor 180 is the control center of the device, which connects all parts of the device through various interfaces and lines, executes various functions of the device and processes data by running or executing the applications stored in the memory 120 and calling the data stored in the memory 120, and thus monitors the whole device. Optionally, the processor 180 can include one or more processing cores; preferably, the processor 180 can integrate an application processor and a modem processor, wherein the application processor mainly processes operating systems, user interfaces, and applications.

[0105] In particular, in the embodiment, the processor 180 loads the executable code corresponding to the process of one or more applications into the memory 120 according to the following instructions, and runs the applications stored in the memory 120 by the processor 180, thereby realizing various functions:

[0106] The data acquisition instruction is used to acquire the working environment temperature value of the target area;

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

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

[0109] The temperature control instruction is used to dynamically control the opening degree of the electronic expansion valve according to the driving parameter value, so that the descending 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 based on the temperature difference to respond to changes in the temperature difference; construct an integral term based on the cumulative value of the temperature difference to eliminate steady-state error; construct a differential term based on the rate of change of the temperature difference to predict future changes in the temperature difference; and perform PID calculation on the opening degree of the electronic expansion valve using the proportional term, integral term, and differential term to obtain drive parameter values ​​for adjusting the opening degree of the electronic expansion valve.

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

[0112] In some embodiments, the temperature control command is used to control the electronic expansion valve 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.

[0113] In some embodiments, the program further includes compressor control commands for controlling the fixed-frequency compressor to shut down if the electronic expansion valve is in a closed state, so as to further prevent the operating environment temperature from decreasing; and controlling the fixed-frequency compressor to turn on if the electronic expansion valve is in an open state, so as to further increase the operating environment temperature.

[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] This application also provides an electronic device. Please refer to [link / reference]. Figure 4 , Figure 4 A schematic diagram of an electronic device provided in an embodiment of this application is shown. This electronic device can be used to implement the temperature control method provided in the above embodiments. 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, etc. Those skilled in the art will understand that... Figure 4The structure of the electronic device 1200 shown in the figure is not a limitation on the electronic device 1200, and the electronic device 1200 can include more or fewer components than those shown, or a combination of some components, or different arrangement of components. Among them:

[0117] The RF circuit 110 is configured to receive and send electromagnetic waves, and to convert electromagnetic waves and electrical signals to each other, so as to communicate with a communication network or other televisions. The RF circuit 110 can include various existing circuit elements 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, a memory, and the like. The RF circuit 110 can communicate with various networks such as the Internet, an intranet, a wireless network, or communicate with other televisions through a wireless network.

[0118] The memory 120 can be configured to store software programs and modules, such as the program instructions / modules corresponding to the temperature control method in the above embodiments. The processor 180 can execute various function applications and data processing by running the software programs and modules stored in the memory 120, and can automatically select a vibration reminder mode for temperature control according to the current scene of the electronic device, so as to ensure that the conference and the like are not disturbed, and the user can perceive the incoming call, thereby improving the intelligence of the electronic device. The memory 120 can include a high-speed random access memory, and can further include a non-volatile memory such as one or more magnetic storage devices, flash memories, or other non-volatile solid-state memories. In some examples, the memory 120 can further include a memory remotely arranged with respect to the processor 180, and the remote memory can be connected to the electronic device 1200 through a network. Examples of the above network include but are not limited to the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof.

[0119] The input unit 130 can be configured to receive input digital or character information, and to generate a key signal, a mouse signal, a lever signal, an optical or a track ball signal related to a user's setting and function control. Specifically, the input unit 130 can include a touch sensitive surface 131 and other input devices 132. The touch sensitive surface 131, also called a touch screen or a touch pad, can collect a touch operation (e.g., a user's operation using a finger, a stylus, or any suitable object or accessory near or on the touch sensitive surface 131) on or near the touch sensitive surface 131 and drive a corresponding connection device according to a pre-set program. Optionally, the touch sensitive surface 131 can include two parts, a touch detection device and a touch controller. The touch detection device detects a user's touch position and detects a signal caused by a touch operation and transmits the signal to the touch controller. The touch controller receives the touch information from the touch detection device, converts it into touch coordinates, and sends it to the processor 180, and can receive a command from the processor 180 and execute it. In addition, the touch sensitive surface 131 can be implemented in various types such as a resistive type, a capacitive type, an infrared type, and a surface acoustic wave type. In addition to the touch sensitive surface 131, the input unit 130 can include other input devices 132. Specifically, the other input devices 132 can include one or more of a physical keyboard, function keys (e.g., a volume control button, a power button, etc.), a trackball, a mouse, a lever, etc.

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

[0121] ​The electronic device 1200 can also include at least one sensor 150, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor can include an ambient light sensor that can adjust the brightness of the display panel 141 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 141 and / or the backlight when the electronic device 1200 is moved to the ear. As one of the motion sensors, the gravity acceleration sensor can detect the magnitude of acceleration in each direction (generally three axes), and when at rest, can detect the magnitude and direction of gravity, and can be used for identifying the posture of the mobile phone application (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, knock), and the like. As for other sensors that the electronic device 1200 can also be configured, such as a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, and the like, will not be described here.

[0122] The audio circuit 160, the speaker 161, and the microphone 162 can provide an audio interface between the user and the electronic device 1200. The audio circuit 160 can convert the received audio data into an electrical signal, transmit it to the speaker 161, and convert it into a sound signal output by the speaker 161. On the other hand, the microphone 162 converts the collected sound signal into an electrical signal, which is received by the audio circuit 160 and converted into audio data. After being processed by the processor 180, the audio data is transmitted to another terminal via the RF circuit 110, or output to the memory 120 for further processing. The audio circuit 160 can also include a jack for providing communication between the external earphone and the electronic device 1200.

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

[0124] The processor 180 is the control center of the electronic device 1200, connects all parts of the mobile phone through various interfaces and lines, performs various functions of the electronic device 1200 and processes data by running or executing software programs and / or modules stored in the memory 120 and calling data stored in the memory 120, thereby monitoring the mobile phone as a whole. Optionally, the processor 180 can include one or more processing cores; in some embodiments, the processor 180 can integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs, and the modem processor mainly processes wireless communication. It can be understood that the above-mentioned modem processor can also not be integrated into the processor 180.

[0125] The electronic device 1200 further includes a power supply 190 for supplying power to various components, and in some embodiments, the power supply can be logically connected to the processor 180 through a power management system, so as to realize functions such as power management, power consumption management, etc. through the power management system. The power supply 190 can also include one or more than one direct or alternating current power supply, a recharging system, a power failure detection circuit, a power converter or inverter, a power state indicator, and any other components.

[0126] Although not shown, the electronic device 1200 can also include a camera (such as a front camera, a rear camera), a Bluetooth module, etc., which will not be described here. In particular, in the present 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, and the one or more programs include instructions for performing the following operations:

[0127] Data acquisition instructions for acquiring a working environment temperature value of a target area;

[0128] First calculation instructions for calculating a temperature difference value between the working environment temperature value and a preset temperature value;

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

[0130] Temperature control instructions for dynamically controlling the opening degree of the electronic expansion valve according to the driving parameter value, so that the descending 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 computing instruction is configured to determine the temperature difference value, construct a proportional term for responding to a change in the temperature difference value according to the temperature difference value, construct an integral term for eliminating steady-state error according to a cumulative value of the temperature difference value, and construct a differential term for predicting a future change in the temperature difference value according to a rate of change of the temperature difference value; and the PID computing instruction is configured to perform PID calculation on the opening / closing degree of the electronic expansion valve through the proportional term, the integral term, and the differential term to obtain the driving parameter value for adjusting the opening / closing degree of the electronic expansion valve.

[0132] In some embodiments, the temperature control instruction is configured to control the electronic expansion valve to close according to the driving parameter value, where 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 configured to control the electronic expansion valve to open according to the driving parameter value, where the temperature difference corresponding to the driving parameter value is greater than a preset maximum temperature threshold.

[0134] In some embodiments, the program further includes a compressor control instruction configured to control a fixed-frequency compressor to close if the electronic expansion valve is in a closed state, so as to further prevent the working environment temperature value from decreasing, and control the fixed-frequency compressor to open if the electronic expansion valve is in an open state, so as to further increase the working environment temperature value.

[0135] In some embodiments, the program further includes a threshold adjustment instruction configured to monitor a variation amplitude 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 variation amplitude.

[0136] The embodiments of the present application further provide an electronic device. The electronic device can be a refrigerator, an air conditioner, or the like.

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

[0138] obtaining a working environment temperature value of a target area;

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

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

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

[0142] The embodiment of the present application also provides a storage medium, wherein the storage medium stores a computer program, and when the computer program runs on a computer, the computer executes the following steps:

[0143] obtaining a working environment temperature value of a target area;

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

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

[0146] dynamically controlling the opening degree of the electronic expansion valve according to the driving parameter value, so that the descending speed of the working environment temperature value is stable or tends to be stable before triggering the electronic expansion valve to be closed.

[0147] It should be noted that, for the temperature control method of the present application, all or part of the processes of the temperature control method of the embodiment of the present application can be understood by those skilled in the art as being completed by a computer program controlling related hardware, the computer program can be stored in a computer readable storage medium, such as a storage medium of an electronic device, and executed by at least one processor in the electronic device, and in the execution process, the processes of the embodiment of the temperature control method can be included. 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, each functional module can be integrated in one processing chip, or each module can exist physically alone, or two or more modules can be integrated in one module. The integrated module can be realized in the form of hardware or in the form of a software functional module. If the integrated module is realized in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer readable storage medium, such as a read-only memory, a magnetic disk or an optical disk, etc.

[0149] The temperature control method, device, medium and equipment provided by the embodiment of the present application are described in detail above. The principles and implementation manners of the present application are described by applying specific examples in this paper, and the above embodiment is only used to help understand the method and core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation manner and application range can be changed, and the above description should not be understood as limiting the present application.

Claims

1. A temperature control method applied to refrigeration equipment, characterized in that, include: Obtain the ambient temperature value of the target area; Calculate the temperature difference between the ambient temperature and the preset temperature. Based on the temperature difference and the preset parameter determination algorithm, the driving parameter value used to adjust the opening degree of the electronic expansion valve is calculated. The opening and closing degree of the electronic expansion valve is dynamically controlled according to the driving parameter value so that the rate of decrease of the working environment temperature value is stable or tends to be stable before triggering the electronic expansion valve to close. Specifically, this includes: controlling the electronic expansion valve 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; After obtaining the working environment temperature value of the target area, the method further includes: monitoring the change range of the working environment temperature value of the target area within a preset time period, and dynamically adjusting the maximum temperature threshold according to the change range.

2. The temperature control method as described in claim 1, characterized in that, The step of calculating the driving parameter value for adjusting the opening degree of the electronic expansion valve based on the temperature difference and a preset parameter determination algorithm includes: Determine the temperature difference value; Construct a proportional term to respond to changes in the temperature difference based on the temperature difference value; An integral term for eliminating steady-state error is constructed based on the cumulative value of the temperature difference; Construct a differential term to predict future changes in the temperature difference based on the rate of change of the temperature difference; By performing PID calculations on the opening and closing degree of the electronic expansion valve using the proportional, integral, and derivative terms, the driving parameter values ​​used to adjust the opening and closing degree of the electronic expansion valve are obtained.

3. The temperature control method as described in claim 2, characterized in that, The driving parameters include the driving voltage or driving current that controls the opening and closing degree of the electronic expansion valve.

4. The temperature control method as described in claim 1, characterized in that, The step of dynamically controlling the opening degree of the electronic expansion valve based on 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 as described in claim 4, characterized in that, After dynamically controlling the opening degree of the electronic expansion valve according to the driving parameter value, the method further includes: If the electronic expansion valve is in the closed state, the fixed-frequency compressor is controlled to shut down to further prevent the operating environment temperature from dropping.

6. The temperature control method as described in claim 4, characterized in that, After obtaining the ambient temperature value of the target area, the method further includes: Monitor the change in the ambient temperature of the target area within a preset time period, and dynamically adjust the minimum temperature threshold based on the change.

7. A temperature control device, applied to refrigeration equipment, characterized in that, The temperature control device includes: The data acquisition module is used to acquire the ambient temperature value of the target area. The first calculation module is used to calculate the temperature difference between the working environment temperature value and the preset temperature value; The second calculation module is used to calculate the driving parameter value for adjusting the opening degree of the electronic expansion valve based on the temperature difference and the preset parameter determination algorithm. The temperature control module is used to dynamically control the opening degree of the electronic expansion valve according to the driving parameter value, so that the rate of decrease of the working environment temperature value is stable or tends to be stable before triggering the electronic expansion valve to close; and is used to control the electronic expansion valve 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. The threshold adjustment module is used to monitor the change in the working environment temperature of the target area within a preset time period, and dynamically adjust the maximum temperature threshold according to the change.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a plurality of instructions adapted for loading by a processor to execute the temperature control method according to any one of claims 1 to 6.

9. An electronic device, characterized in that, The device includes a processor and a memory, the memory storing multiple instructions, and the processor loading the instructions to execute the temperature control method according to any one of claims 1 to 6.

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