Self-monitoring control system for a refrigerator

Abstract

This application relates to a self-monitoring and control system for a refrigerator, which implements a self-monitoring and control method. The self-monitoring and control method includes: setting the expected temperature of the first cooling compartment of the refrigerator to a first set temperature; cooling the first cooling compartment based on a default cooling power, wherein a cooling cycle includes a start-up cycle for cooling and a shutdown cycle for stopping cooling, with the shutdown cycle being a constant value; after the shutdown cycle ends, obtaining the current temperature of the first cooling compartment, and adjusting the default cooling power based on the current temperature of the first cooling compartment. This application maintains a constant shutdown cycle, preventing the compressor from consuming unnecessary power due to frequent starts. After the shutdown cycle ends, the default cooling power can be adjusted accordingly based on the difference between the current temperature of the first cooling compartment and the first set temperature. During long-term operation, the default cooling power is adaptively changed according to the ambient temperature and cooling load, realizing the self-monitoring and control of the refrigerator.

Description

Technical Field

[0001] This application relates to the field of refrigerator refrigeration control technology, and in particular to a self-monitoring and control system for refrigerators. Background Technology

[0002] Traditional household refrigerators allow users to manually adjust the thermostat setting to change the temperature threshold at which the refrigerator stops cooling. When the ambient temperature changes or the load increases, users need to adjust the thermostat setting according to the different ambient temperatures in different seasons or the weight of the stored food to reduce the frequency of compressor starts and save energy.

[0003] However, when users have a specific expectation of the required cooling temperature for their home refrigerator, they may choose to fix the temperature threshold at which the refrigerator stops cooling, for example, through a thermostat. This can easily cause the compressor to start frequently, leading to increased power consumption. Summary of the Invention

[0004] Therefore, it is necessary to provide a self-monitoring and control system for refrigerators to address the aforementioned technical problems.

[0005] This application relates to a self-monitoring control system for refrigerators, used to implement a self-monitoring control method, the self-monitoring control method comprising:

[0006] Set the expected temperature of the first cooling compartment of the refrigerator to the first set temperature;

[0007] The first cooling room is cooled based on the default cooling power. A cooling cycle includes a start-up cycle for cooling and a shutdown cycle for stopping cooling. The shutdown cycle is a constant value.

[0008] After the shutdown cycle ends, the current temperature of the first cooling room is obtained, and the default cooling power is adjusted based on the current temperature of the first cooling room.

[0009] Optionally, adjusting the default cooling power based on the current temperature of the first cooling room specifically includes:

[0010] If the current temperature of the first cooling room is greater than the first set temperature, then the default cooling power is updated to increase by a certain amount;

[0011] If the current temperature of the first cooling room is lower than the first set temperature, then the default cooling power is updated to decrease by a certain amount.

[0012] Optionally, the first set temperature is subtracted from the first predetermined difference to obtain the first temperature threshold.

[0013] Detect the real-time temperature of the first refrigeration room;

[0014] When the real-time temperature of the first cooling room is equal to the first temperature threshold, the cooling power is configured to the default cooling power.

[0015] Optionally, when the real-time temperature of the first cooling room is higher than the first temperature threshold, the cooling power is increased based on the degree of difference from the default cooling power;

[0016] When the real-time temperature of the first cooling room is lower than the first temperature threshold, the cooling power is reduced according to the degree of difference based on the default cooling power.

[0017] Optionally, a second temperature threshold is set for the first cooling room, wherein the second temperature threshold is lower than the first temperature threshold;

[0018] When the real-time temperature of the first cooling room is lower than the second temperature threshold, the shutdown cycle begins.

[0019] Optionally, the refrigerator has a second cooling compartment, and the expected temperature of the second cooling compartment is set to a second set temperature. The second cooling compartment and the first cooling compartment share the default cooling power and the cooling cycle.

[0020] After the shutdown cycle ends, the current temperature of the second cooling room is obtained;

[0021] The default cooling power is adjusted based on the current temperature of the first cooling room and the current temperature of the second cooling room.

[0022] Optionally, the default cooling power is adjusted based on the current temperature of the first cooling room and the current temperature of the second cooling room, specifically including:

[0023] If the current temperature of the first cooling room is equal to the first set temperature, and the current temperature of the second cooling room is equal to the second set temperature, then the original default cooling power is maintained; otherwise, the default cooling power is updated accordingly to decrease or increase by a certain amount.

[0024] Optionally, the first refrigeration room and the second refrigeration room may be either a refrigerator room or a freezer room.

[0025] This application provides a self-monitoring and control system for a refrigerator, comprising:

[0026] A display screen is used to display the expected temperature of the first cooling compartment of the refrigerator, the expected temperature being set to a first set temperature.

[0027] The compressor is used to cool the first refrigeration room based on a default refrigeration power. A refrigeration cycle includes a start-up cycle for refrigeration and a shutdown cycle for stopping refrigeration, wherein the shutdown cycle is a constant value.

[0028] The controller is configured to detect the current temperature of the first cooling room after the shutdown cycle ends, and adjust the default cooling power based on the current temperature of the first cooling room.

[0029] Optionally, the self-monitoring and control system includes:

[0030] A potentiometer, coupled between the compressor and the controller, is used to receive control signals from the controller and accordingly change the operating voltage of the compressor to adjust the cooling power.

[0031] The self-monitoring and control system for refrigerators applied in this application has at least the following effects:

[0032] This application maintains a constant shutdown cycle, preventing the compressor from consuming unnecessary power due to frequent starts. After the shutdown cycle ends, the default cooling power can be adjusted accordingly based on the difference between the current temperature of the first refrigeration room and the first set temperature. During long-term operation, the default cooling power can be adaptively changed based on ambient temperature and cooling load.

[0033] During the entire operation of the refrigerator, the user sets the first set temperature, and then the refrigerator automatically adjusts the default cooling power and can maintain the refrigerator in a temperature range below the first set temperature, thus realizing the refrigerator's self-monitoring and control. Attached Figure Description

[0034] Figure 1 This is a hardware architecture diagram of a self-monitoring and control system for a refrigerator according to one embodiment of this application;

[0035] Figure 2 This is a flowchart of a self-monitoring and control method for a refrigerator in one embodiment of this application;

[0036] Figure 3 This is a partial implementation step diagram of a self-monitoring and control method for a refrigerator in one embodiment of this application;

[0037] Figure 4 This is a partial implementation step diagram of a self-monitoring and control method for a refrigerator in one embodiment of this application;

[0038] Figure 5 This is a partial implementation step diagram of a self-monitoring and control method for a refrigerator in one embodiment of this application;

[0039] The annotations in the figure are explained as follows:

[0040] 1. Self-monitoring and control system; 2. Compressor; 3. Relay; 4. Signal amplifier; 5. Temperature detector; 6. Potentiometer; 7. Display; 8. Microcontroller; 9. Compressor power supply. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0042] See Figure 1 This application provides a self-monitoring and control system 1 for a refrigerator, comprising: a compressor 2, a relay 3 (e.g., a 5V single-channel relay), a signal amplifier 4, a temperature detector 5 (e.g., a resistance temperature detector (RTD)), a potentiometer 6 (e.g., a 0.15kW electronic potentiometer), a display 7 (e.g., an LCD display), a microcontroller 8 (e.g., an Arduino UNO microcontroller), and a compressor power supply 9 (e.g., a 220VAC power supply). During operation, the compressor power supply 9 powers the compressor 2, and also powers the relay 3 and the microcontroller 8. The temperature detector 5, signal amplifier 4, and microcontroller 8 are connected in sequence. The temperature detector 5 detects the real-time temperature of the refrigerator's cooling compartment and sends the real-time temperature to the microcontroller 8 via the signal amplifier 4, whereby the signal amplifier 4 amplifies the electrical signal of the current temperature measured by the temperature detector 5. The microcontroller 8 is connected to the compressor 2 via the relay 3 and is used to monitor and control the compressor's on / off time. The microcontroller 8 is connected to the potentiometer 6 and is used to control the resistance of the potentiometer 6. The microcontroller 8, potentiometer 6, relay 3, and compressor 2 are connected in sequence to enable the compressor 2 to operate according to the cooling power configured by the potentiometer 6. The display 7 serves as both an input and display device, such as a touchscreen, to receive the user-specified set temperature and display both the set temperature and the real-time temperature. This set temperature should be understood as the highest temperature expected during the refrigerator's operation, i.e., the corresponding set temperature for the refrigeration compartment. Based on the set temperature, the microcontroller 8 adjusts the resistance of the potentiometer 6 by increasing or decreasing it by a certain amount, thereby changing the operating voltage of the compressor 2 and increasing or decreasing the refrigeration power. The microcontroller 8 controls the start and stop of the compressor 2 according to a self-monitoring control method, completing the control of the refrigerator's refrigeration cycle. The self-monitoring control method can be written into the microcontroller via code. This code is used to monitor and control the compressor's input voltage and its start and stop. The entire hardware system can automatically detect the compressor's input voltage and on / off time and apply it through the microcontroller interface, thus applying the self-monitoring control method under given environmental and load conditions.

[0043] As shown in the figure, the compressor 2 of the household refrigerator is connected to the compressor power supply 9 and the microcontroller 8 via a relay 3. The microcontroller 8 is programmed under specific conditions to control the power regulation of the compressor 2 and to control the compressor's on / off state via the single-channel relay 3. To determine the specific conditions for power regulation and switching, the current temperature of the refrigeration compartment is recorded by a temperature detector, amplified by a signal amplifier 4, and fed to the microcontroller 8. After the microcontroller 8 determines the specific power regulation conditions, the current setpoint of each refrigerator and freezer compartment is updated synchronously. A potentiometer 6 is connected to the relay 3 and the microcontroller 8, and performs a resistance change function to adjust the input power of the compressor 2 under the influence of specific conditions automatically recognized by the microcontroller 8. At each point in time, the current setpoint and current temperature of each refrigeration compartment are displayed on a display 7 connected to the microcontroller 8, the relay 3, and the potentiometer 6. Specifically, the main components of the relay 3 include an output terminal, an LED, an input terminal, a power LED, a diode, and a switching transistor. The amplifier 4 has an internal signal conditioning amplifier that converts the temperature detection electrical signal from the temperature detector 5 into a voltage compatible with the ADC input channel. The T+ and T- input terminals are connected to the low-noise amplifier A1 to ensure high accuracy of the detection input, while isolating the connection line of the temperature detector 5 from interference sources. The thermoelectric potential output by the temperature detector 5 is amplified by the low-noise amplifier A1, then by the voltage amplifier A2, and then sent to the input of the analog-to-digital converter (ADC). Before converting the temperature voltage value to the equivalent temperature value, the cold junction temperature of the RTD needs to be compensated, for example, the difference between the ambient temperature of the MAX6675 and the actual reference value 0℃ (17). The temperature detector 5 uses a resistance temperature detector (RTD) and includes a resistive element, a bridged output, and a 24V DC power supply. The potentiometer 6, which can be digitally controlled to adjust the resistance value, consists of a high-side voltage, a low-side voltage, a sliding end voltage, n analog switches, and n resistors in series. The microcontroller 8 consists of a power supply, LEDs, a reset button 35, digital input / output ports, and analog input ports.

[0044] See Figure 2 This application provides an embodiment of a self-monitoring control system for a refrigerator, used to implement a self-monitoring control method, which includes steps S100 to S300. Specifically: Step S100 sets the expected temperature of the first cooling compartment of the refrigerator to a first set temperature. Step S200 cools the first cooling compartment based on a default cooling power; one cooling cycle includes a cooling start-up cycle and a cooling stop-down cycle, with the cooling stop-down cycle being a constant value. Step S300, after the cooling stop-down cycle ends, obtains the current temperature of the first cooling compartment and adjusts the default cooling power based on the current temperature of the first cooling compartment.

[0045] The refrigeration room can be, for example, a freezer room or a refrigerator room. The expected temperature of the first refrigeration room should be understood as the highest temperature the user expects the refrigeration room to reach during the changing process. The first set temperature can be specified by the user or specified by the program according to consumer habits. In this embodiment, the constant shutdown cycle prevents the compressor from consuming unnecessary power due to frequent starts. After the shutdown cycle ends, the default cooling power can be adjusted accordingly based on the difference between the current temperature of the first refrigeration room and the first set temperature.

[0046] This embodiment compares the current temperature of the first cooling compartment in step S300 with the first set temperature, enabling the refrigerator to automatically adjust its default cooling power in response to changes in load and ambient temperature. During operation, the refrigerator maintains its temperature within the first set temperature range. Once the user has set the first set temperature, no further user intervention is required.

[0047] Step S300 specifically includes: if the current temperature of the first cooling room is greater than the first set temperature, then update the default cooling power to increase by a certain amount; if the current temperature of the first cooling room is less than the first set temperature, then update the default cooling power to decrease by a certain amount.

[0048] It's understandable that if the current temperature of the first cooling room after the shutdown cycle is higher than the user's expectation, it indicates that the default cooling capacity is too low. Conversely, if it's lower, it's too high. Adjusting the default cooling capacity accordingly will solve the problem.

[0049] Specifically, if the ambient temperature rises in summer and the amount of stored items increases, the current temperature of the cooling compartment after the refrigerator's shutdown cycle may exceed the user's expected set temperature. In this case, this application can automatically and adaptively increase the default cooling power to address the situation.

[0050] Conversely, if the ambient temperature decreases in winter and the amount of stored items decreases, the current temperature of the cooling compartment may be lower than the user's expected set temperature after the refrigerator's shutdown cycle. In this case, this application can automatically and adaptively reduce the default cooling power to address the situation.

[0051] Adaptively reduce or increase the default cooling power, as given by ΔP = mC. p ΔT / Δt is executed, ΔP is the default power adjustment, m is the mass of air in the cooling room, and C is the mass of air in the cooling room. p Δt is the specific heat capacity of the air in the refrigeration room, and Δt is the shortest time required for the temperature detector to record the temperature change after the compressor power changes (the sensitivity of the temperature detector).

[0052] In both cases of increasing or decreasing the default cooling power, the shutdown cycle itself remains unchanged, avoiding frequent compressor starts and ensuring that the refrigerator meets the user's expected set temperature without unnecessary power consumption. This ensures that while maintaining the minimum compressor voltage, the current temperature after the shutdown cycle is always at the user's desired level.

[0053] In some embodiments, the self-monitoring control method includes: step S400, after the shutdown cycle ends, obtaining the current temperature of the first cooling room, and adjusting a first set temperature of the first cooling room based on the current temperature of the first cooling room. Specifically, this includes maintaining the default cooling power, and if the current temperature of the first cooling room is higher than the first set temperature, increasing the first set temperature to the current temperature of the first cooling room.

[0054] One embodiment of this application provides a self-monitoring and control system for a refrigerator, including a display screen, a compressor, and a controller. The display screen shows the expected temperature of the first cooling compartment of the refrigerator, which is set as a first preset temperature. The compressor cools the first cooling compartment based on a default cooling power. A cooling cycle includes an on-time cooling cycle and a off-time cooling cycle, with the off-time being a constant value. The controller, such as a microcontroller, detects the current temperature of the first cooling compartment after the off-time cycle ends and adjusts the default cooling power based on the current temperature.

[0055] In addition, other hardware devices can be configured, such as potentiometers and other hardware devices. The potentiometer is coupled between the compressor and the controller, used to receive control signals from the controller and accordingly change the compressor's operating voltage to adjust the default cooling power.

[0056] In some embodiments, the refrigerator has a second cooling compartment, a first cooling compartment, and a second cooling compartment, one of which is a refrigerator compartment and the other is a freezer compartment. The self-monitoring control method includes: step S500, setting the expected temperature of the second cooling compartment to a second set temperature, wherein the second cooling compartment and the first cooling compartment share a default cooling power and a shared cooling cycle. Step S600, obtaining the current temperature of the second cooling compartment after the shutdown cycle ends. Step S700, adjusting the default cooling power based on the current temperature of the first cooling compartment and the current temperature of the second cooling compartment.

[0057] Step S700 specifically includes: if the current temperature of the first cooling room is equal to the first set temperature, and the current temperature of the second cooling room is equal to the second set temperature, then the original default cooling power is maintained; otherwise, the default cooling power is updated accordingly to decrease or increase by a certain amount. Specifically:

[0058] If the current temperature of the first cooling room is equal to the first set temperature, and the current temperature of the second cooling room is greater than the second set temperature, then the default cooling power is updated to increase by a certain amount.

[0059] If the current temperature of the first cooling room is greater than the first set temperature, and the current temperature of the second cooling room is greater than the second set temperature, then the default cooling power is updated to increase by a certain amount.

[0060] If the current temperature of the first cooling room is equal to the first set temperature, and the current temperature of the second cooling room is less than the second set temperature, then the default cooling power is updated to decrease by one increment.

[0061] If the current temperature of the first cooling room is lower than the first set temperature, and the current temperature of the second cooling room is lower than the second set temperature, then the default cooling power is updated to decrease by one increment.

[0062] If the current temperature of the first refrigeration compartment is greater than the first set temperature, and the current temperature of the second refrigeration compartment is greater than the second set temperature. This situation is not the focus of this application. It is caused by a severe imbalance in the refrigeration load between the freezer and refrigerator compartments. In this case, users generally use a separate refrigerator or freezer, rather than a refrigerator that has both freezing and refrigeration functions.

[0063] Furthermore, the terms "greater than" and "less than" in the temperature comparisons used in the various embodiments of this application do not imply extremely precise comparisons. For example, "temperature A equals" temperature B means that temperature A is within the range of temperature B ± tolerance. "Temperature A is greater than" temperature B means that temperature A exceeds the range of temperature B ± tolerance. "Temperature A is less than" temperature B means that temperature A is lower than the range of temperature B ± tolerance. This tolerance can be, for example, 0.5 degrees, or can be relaxed to a larger empirical value. This is to avoid confusion in the control of both the refrigerator and freezer rooms when they are controlled simultaneously.

[0064] See Figure 3 When using the refrigerator, the user first sets two temperature settings: one is the first set temperature T for the first cooling compartment (such as the refrigerator compartment). SP, Another is the second set temperature T for the second refrigeration room (such as the freezer room). SP, The microcontroller attempts to achieve these user-defined first and second set temperatures in the fewest possible iterations by changing the default cooling power. Temperature detectors are configured to monitor the real-time temperatures of both the refrigerator and freezer compartments during a constant shutdown cycle t. * Then, observe whether the actual temperature of the refrigerator compartment deviates from the tolerance range of the first set temperature, and observe whether the actual temperature of the freezer compartment deviates from the tolerance range of the second set temperature. Both tolerance ranges can be the same, denoted as T. TOLThe microcontroller then has two options: to increase the default cooling power or decrease it by a variable amount, for example, by adjusting the potentiometer's resistance. The self-monitoring control process includes the following two scenarios (a) and (b):

[0065] (a) See also Figure 4 If the actual temperature of one or two cooling compartments is lower than the set temperature by more than the allowable tolerance, the microcontroller will now attempt to increase the potentiometer by a resistance value. The compressor's default cooling power will be reduced by a small number accordingly, so that less power can be supplied to the compressor. After the next shutdown cycle, the actual temperature of the cooling compartment will rise and come within the allowable tolerance range.

[0066] (b) See also Figure 5 If the actual temperature of one or two cooling compartments is higher than the set temperature by more than the allowable tolerance, the microcontroller will now try to reduce the resistance of the potentiometer by one value. The default cooling power of the compressor will be increased by a small number accordingly so that more power can be provided to the compressor. After the next shutdown cycle, the actual temperature of the cooling compartment will decrease and come within the allowable tolerance range.

[0067] exist Figure 4 and Figure 5 In the text, the parameters for adjusting the default cooling power are explained as follows: V: Commercial voltage source; I: Current source; ΔP: Power difference; C p : Gas specific heat capacity; R: Potentiometer resistance; R new Updated potentiometer resistor; The mass flow rate of the gas (the heat exchange rate between the gas and the refrigerator can also be changed by altering the mass flow rate). It is understood that the accuracy of the self-monitoring and control method in this application largely depends on the accuracy of the temperature measurement.

[0068] After each shutdown cycle, the above two conditions are monitored repeatedly until the actual temperature of both cooling rooms is within the allowable tolerance of the corresponding set temperature. The resistance value of the potentiometer is no longer changed, and the default cooling power of the previous cycle is maintained.

[0069] In some special cases, one refrigeration compartment may face the situation defined in (a), while another refrigeration compartment may face the situation explained in (b). This is a practical weakness of the technical solution in this application. This problem only needs to be addressed adaptively: First, this situation is less likely to occur due to the severe unevenness of refrigeration and freezing loads, generally appearing when the refrigeration compartment is full and the freezer compartment is empty, or vice versa. This situation is less common in refrigerators that simultaneously have refrigeration and freezing functions. Second, an adaptive solution for this situation is to increase the tolerance of the corresponding first or second set temperature to accommodate this procedural error. Third, for this situation, two independent compressors can also be configured for the two refrigeration compartments to fundamentally solve the problem, at the cost of increasing the refrigerator's manufacturing cost.

[0070] In some embodiments, the self-control monitoring method includes: for a first cooling room, step S1, subtracting a first predetermined difference from a first set temperature to obtain a first temperature threshold; step S2, detecting the real-time temperature of the first cooling room; and step S3, when the real-time temperature of the first cooling room equals the first temperature threshold, configuring the cooling power to the default cooling power.

[0071] Step S3 specifically includes: when the real-time temperature of the first cooling room is higher than the first temperature threshold, the cooling power is increased according to the degree of difference based on the default cooling power; when the real-time temperature of the first cooling room is lower than the first temperature threshold, the cooling power is decreased according to the degree of difference based on the default cooling power.

[0072] In this embodiment, the default cooling power refers to the cooling power when the real-time temperature is at a first temperature threshold. When the real-time temperature is higher or lower than the first temperature threshold, the cooling power increases or decreases linearly based on the default cooling power. That is, the higher the temperature relative to the first temperature threshold, the higher the cooling power relative to the default cooling power, and vice versa.

[0073] In some embodiments, the self-control monitoring method includes: step S4, setting a second temperature threshold for the first refrigeration chamber, the second temperature threshold being lower than a first temperature threshold; when the real-time temperature of the first refrigeration chamber is lower than the second temperature threshold, entering a shutdown cycle. It can be understood that the second threshold is fixed and does not change during compressor operation, while the first threshold changes during compressor operation.

[0074] In some embodiments, the second cooling chamber independently has a third temperature threshold and a fourth temperature threshold.

[0075] The third temperature threshold of the second refrigeration room is functionally equivalent to the first temperature threshold of the first refrigeration room.

[0076] The fourth temperature threshold of the second refrigeration room is functionally equivalent to the second temperature threshold of the first refrigeration room.

[0077] The self-control monitoring method includes: Step S5, for the second cooling room, subtracting a second predetermined difference from the second set temperature to obtain a third temperature threshold for the second cooling room. Step S6, detecting the real-time temperature of the second cooling room. Step S7, when the real-time temperature of the second cooling room is equal to the third temperature threshold, the cooling power is configured to the default cooling power. Step S8, setting a fourth temperature threshold for the second cooling room, where the fourth temperature threshold is lower than the third temperature threshold; when the real-time temperature of the second cooling room is lower than the fourth temperature threshold, entering a shutdown cycle.

[0078] Furthermore, for steps S1 to S8, the first predetermined difference and the second predetermined difference are the same. For a refrigerator that simultaneously has a first cooling compartment and a second cooling compartment, the cooling power is adjusted based on the corresponding default cooling power according to the following three conditions. The default cooling power can be configured based on either the first or second cooling compartment. If the real-time temperature of the first cooling compartment is lower than a second temperature threshold and the real-time temperature of the second cooling compartment is lower than a fourth temperature threshold, the compressor is turned off until this condition is violated.

[0079] The self-monitoring and control system for refrigerators provided in the embodiments of this application maintains a constant cooling shutdown cycle, preventing the compressor from consuming unnecessary power due to frequent starts. After the shutdown cycle ends, the default cooling power is adjusted accordingly based on the difference between the current temperature of the first cooling compartment and the first set temperature. During long-term operation, the default cooling power is adaptively changed based on ambient temperature and cooling load. When using the refrigerator, the user only needs to set the desired first set temperature, after which the refrigerator automatically adjusts the default cooling power, thus achieving self-monitoring and control of the refrigerator.

[0080] One embodiment of this application provides a computer program product, including step S100, setting the expected temperature of the first cooling compartment of a refrigerator to a first set temperature. Step S200, cooling the first cooling compartment based on a default cooling power, wherein a cooling cycle includes an on-time cooling cycle and a off-time cooling cycle, the off-time being a constant value. Step S300, after the off-time ends, obtaining the current temperature of the first cooling compartment, and adjusting the default cooling power based on the current temperature of the first cooling compartment.

[0081] The self-monitoring control method can be written into a microcontroller to execute the steps of the self-monitoring control method in the embodiments of this application. The computer program product can be stored on a computer-readable recording medium. The computer program product can also be provided for download via a data network (e.g., via RAN, via the Internet, and / or via RBS). Alternatively or additionally, the method can be encoded in a field-programmable gate array (FPGA) and / or application-specific integrated circuit (ASIC), or its functionality can be provided for download by means of a hardware description language.

[0082] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, storage, databases, or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), Rambus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0083] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered to be within the scope of this specification. When technical features of different embodiments are embodied in the same drawing, it can be regarded as the drawing also disclosing examples of combinations of the various embodiments involved.

[0084] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A self-monitoring and control system for a refrigerator, characterized in that, A self-monitoring and control method is used to implement the self-monitoring and control method, the self-monitoring and control method comprising: Set the expected temperature of the first cooling compartment of the refrigerator to the first set temperature; The first cooling room is cooled based on the default cooling power. A cooling cycle includes a start-up cycle for cooling and a shutdown cycle for stopping cooling. The shutdown cycle is a constant value. After the shutdown cycle ends, the current temperature of the first cooling room is obtained, and the default cooling power is adjusted based on the current temperature of the first cooling room.

2. The self-monitoring and control system as described in claim 1, characterized in that, Adjusting the default cooling power based on the current temperature of the first cooling room specifically includes: If the current temperature of the first cooling room is greater than the first set temperature, then the default cooling power is updated to increase by a certain amount; If the current temperature of the first cooling room is lower than the first set temperature, then the default cooling power is updated to decrease by a certain amount.

3. The self-monitoring and control system as described in claim 1, characterized in that, Subtracting the first predetermined difference from the first set temperature yields the first temperature threshold. Detect the real-time temperature of the first refrigeration room; When the real-time temperature of the first cooling room is equal to the first temperature threshold, the cooling power is configured to the default cooling power.

4. The self-monitoring and control system as described in claim 3, characterized in that, When the real-time temperature of the first cooling room is higher than the first temperature threshold, the cooling power is increased according to the degree of difference based on the default cooling power. When the real-time temperature of the first cooling room is lower than the first temperature threshold, the cooling power is reduced according to the degree of difference based on the default cooling power.

5. The self-monitoring and control system as described in claim 4, characterized in that, A second temperature threshold is set for the first cooling room, and the second temperature threshold is lower than the first temperature threshold. When the real-time temperature of the first cooling room is lower than the second temperature threshold, the shutdown cycle begins.

6. The self-monitoring and control system as described in claim 1, characterized in that, The refrigerator has a second cooling compartment, and the expected temperature of the second cooling compartment is set to a second set temperature. The second cooling compartment and the first cooling compartment share the default cooling power and the cooling cycle. After the shutdown cycle ends, the current temperature of the second cooling room is obtained; The default cooling power is adjusted based on the current temperature of the first cooling room and the current temperature of the second cooling room.

7. The self-monitoring and control system as described in claim 6, characterized in that, Adjusting the default cooling power based on the current temperature of the first cooling room and the current temperature of the second cooling room specifically includes: If the current temperature of the first cooling room is equal to the first set temperature, and the current temperature of the second cooling room is equal to the second set temperature, then the original default cooling power is maintained; otherwise, the default cooling power is updated accordingly to decrease or increase by a certain amount.

8. The self-monitoring and control system as described in claim 6, characterized in that, The first refrigeration room and the second refrigeration room, one of which is a refrigerator room and the other is a freezer room.

9. A self-monitoring and control system for a refrigerator, characterized in that, include: A display screen is used to display the expected temperature of the first cooling compartment of the refrigerator, the expected temperature being set to a first set temperature. The compressor is used to cool the first refrigeration room based on a default refrigeration power. A refrigeration cycle includes a start-up cycle for refrigeration and a shutdown cycle for stopping refrigeration, wherein the shutdown cycle is a constant value. The controller is configured to detect the current temperature of the first cooling room after the shutdown cycle ends, and adjust the default cooling power based on the current temperature of the first cooling room.

10. The self-monitoring and control system as described in claim 9, characterized in that, The self-monitoring and control system includes: A potentiometer, coupled between the compressor and the controller, is used to receive control signals from the controller and accordingly change the operating voltage of the compressor to adjust the cooling power.

Images