Self-running control method in case of refrigerator defect

Abstract

The application discloses a self-operation control method under a refrigerator defect condition, and is suitable for a multi-cabin intelligent refrigerator with a refrigeration chamber, a variable-temperature chamber and a freezing chamber. The method comprises the following steps: during normal operation of the refrigerator, actual operation parameters of refrigeration execution components (such as refrigeration air doors, variable-temperature air doors and compressors) corresponding to each refrigeration chamber are continuously recorded; when it is detected that a temperature sensor of a certain chamber fails, historical operation data of the chamber in a set time period is extracted, and average control parameters are calculated; and during the failure, the corresponding refrigeration execution components are periodically operated according to the average control parameters, so as to maintain the basic stability of the chamber temperature. The method supports automatic learning and parameter updating, can realize real-time monitoring of the sensor state and dynamic switching of the operation mode, and improves the environmental adaptability and system stability of the refrigerator under the defect condition.

Description

Technical Field

[0001] This invention relates to the field of intelligent refrigerator control technology, and in particular to a self-operation control method for refrigerator defects. Background Technology

[0002] With the improvement of people's living standards and the increasing demand for diversified food storage, modern refrigerators have widely adopted a multi-compartment structure, typically including multiple functional compartments such as a refrigerator compartment, a freezer compartment, and a variable temperature compartment, and achieving intelligent temperature control through an electronic control system. To achieve independent temperature control of each compartment, refrigerators usually have an independent temperature sensor in each compartment, which works in conjunction with actuators such as dampers or compressors for precise adjustment.

[0003] In existing technologies, multi-compartment refrigerators collect data from various temperature sensors to achieve coordinated control of refrigeration components such as the refrigerator damper, variable temperature damper, and compressor, thereby meeting the refrigeration needs of different compartments. Under normal operating conditions, each temperature sensor accurately reflects the ambient temperature of the compartment, and the system uses this information to determine whether to open or close the corresponding components, achieving efficient and energy-saving operation.

[0004] However, in actual operation, the temperature sensor in one of the refrigerator's compartments may malfunction due to aging, communication abnormalities, environmental interference, or other reasons. When the sensor fails, the system will be unable to obtain valid temperature feedback data, causing an interruption in the control logic of the corresponding compartment.

[0005] To ensure basic preservation and refrigeration functions, some existing refrigerators employ a "fixed-cycle operation" mode when sensors malfunction. This involves setting fixed damper opening and closing times or compressor start / stop intervals, allowing the faulty compartment to continue cyclical cooling. However, this method has significant drawbacks: firstly, fixed-cycle parameters are typically statically configured, making it difficult to adapt to seasonal changes, ambient temperature differences, or changes in user habits; secondly, the lack of a real-time feedback mechanism can easily lead to insufficient or excessive cooling, resulting in poor food preservation and even energy waste.

[0006] In addition, existing technologies typically do not take into account the refrigerator's operating status before the failure, and cannot make full use of historical data during normal operation for intelligent decision-making, resulting in a disconnect between the control strategy and the actual operating environment, and a weak system adaptability.

[0007] In summary, current refrigerator operating control methods for handling sensor malfunctions in some compartments suffer from poor adaptability, low control precision, and low data utilization efficiency. There is an urgent need for a self-operating control method that can dynamically adjust based on historical operating parameters to improve the operating stability and cooling effect of the refrigerator system under defective conditions. Summary of the Invention

[0008] In view of this, the purpose of the present invention is to provide a self-operating control method for refrigerator defects, so as to achieve stable control of the refrigeration compartment even when the temperature sensor fails, thereby improving the fault tolerance and operational reliability of the refrigerator system and solving the problem that the fixed control strategy in the prior art is difficult to adapt to environmental changes.

[0009] To achieve the above objectives, the present invention provides the following technical solution: In one embodiment of the present invention, a self-operation control method for refrigerator defects is provided, applied to a refrigerator with multiple independent refrigeration compartments, each compartment being equipped with a temperature sensor and a corresponding refrigeration actuator. The method includes: continuously collecting and recording operating parameters of each refrigeration actuator within a preset time period during normal refrigerator operation; when a temperature sensor failure is detected in any target compartment, extracting operating data corresponding to that target compartment from the operating parameters; calculating average control parameters of the refrigeration actuator corresponding to that target compartment based on the extracted data; and controlling the operation of the corresponding refrigeration actuator according to the average control parameters during the temperature sensor failure period.

[0010] Furthermore, the refrigeration actuator includes at least one of a refrigeration damper, a variable temperature damper, and a compressor; the operating parameters include the opening and closing duration of the damper, and the switching duration and operating speed of the compressor.

[0011] In one embodiment of the present invention, when the target compartment is a cold storage room or a variable temperature room, the average opening duration and average closing duration of the damper are calculated based on historical data within multiple switching cycles, and used as the average control parameters of the damper.

[0012] Furthermore, the temperature of the compartment can be regulated by controlling the refrigeration damper or the variable temperature damper to periodically open and close according to the average opening duration and the average closing duration.

[0013] In another embodiment of the present invention, when the target compartment is a freezer compartment, the average start-up time and average shutdown time of the compressor in multiple cycles are calculated based on historical data, and the operating gear during the fault period is determined by combining the extracted operating gear. The parameters are used together as the average control parameters of the compressor.

[0014] Furthermore, during the period of temperature sensor failure, the compressor operates periodically according to the above-mentioned average start-up time, stop-down time, and determined operating level to achieve automatic temperature control.

[0015] Preferably, in an embodiment of the present invention, the timing for recording the operating parameters is as follows: when the cabin first reaches the temperature control shutdown point, the on / off duration and / or operating level of the corresponding refrigeration actuator within that cycle are recorded.

[0016] Optionally, the preset time period is the normal operating period of the most recent 24 hours before the fault occurred, to ensure the validity and timeliness of the collected data.

[0017] Furthermore, the average control parameters can be calculated using a weighted average method, assigning higher weights to historical operating data that are closer to the fault time, in order to improve the accuracy of the control strategy.

[0018] Preferably, the extraction, calculation and control process can be set to be executed periodically, continuously monitoring the sensor status and dynamically updating the control parameters, thereby improving the intelligence and stability of the refrigerator during operation.

[0019] Based on the above technical solution, the present invention provides a self-operation control method for refrigerators under defect conditions. By recording the historical operating data of each compartment's refrigeration components in real time during normal refrigerator operation, and automatically extracting relevant historical parameters for calculation when the temperature sensor malfunctions, the method generates average control parameters adapted to the current environment to control the operation of the corresponding refrigeration components. This solves the problem in the prior art where fixed-cycle operation under fault conditions makes it difficult to adapt to environmental changes, thereby improving the refrigerator's self-adaptability and operational reliability under defect conditions.

[0020] Compared to traditional fixed-cycle control methods, this invention constructs an operating model based on historical data, exhibiting significant environmental adaptability. By recording operating parameters within the most recent 24 hours before a malfunction, it can dynamically reflect the impact of external factors such as the current season, ambient temperature, and user habits, achieving more precise operating control, effectively avoiding insufficient or excessive cooling, and further extending the preservation time of food inside the refrigerator.

[0021] Furthermore, this invention supports separate control of the refrigerator compartment, the variable temperature compartment, and the freezer compartment. When a sensor fails in any compartment, it does not affect the normal operation of other compartments. Moreover, the self-operation strategy of each compartment is generated based on the independent historical behavior characteristics of the corresponding refrigeration components, making the control strategy more targeted and reliable.

[0022] This invention also supports weighted averaging of historical parameters, assigning higher weights to operating data closer to the fault time to improve the accuracy of generated control parameters; and supports a cyclic detection and dynamic update mechanism, so that when the sensor returns to normal or the fault state changes, the system can adjust the control strategy in a timely manner to ensure the continuous and stable operation of the refrigerator throughout its entire service life.

[0023] The technical solution of this invention is not only applicable to household refrigerators with multi-compartment structures, but can also be extended to commercial cold chain transportation equipment, intelligent freezers and other multi-temperature zone refrigeration scenarios, and has broad application value and promotion prospects.

[0024] Compared to existing technologies that use fixed-cycle refrigeration, this invention extracts historical operating parameters of the refrigerator before a malfunction and calculates the control strategy using averaging or weighted averaging methods, resulting in stronger environmental adaptability and more precise control. Taking typical summer and winter operating conditions as examples, traditional fixed-cycle strategies often ignore changes in ambient temperature, leading to temperature fluctuations within the refrigerated compartment of up to ±3℃. In contrast, the historical data-driven control method of this invention reduces the temperature fluctuation range to within ±1℃ under the same conditions. This improved precision not only significantly enhances food preservation but also demonstrates an average energy saving rate increase of approximately 8%–12% in actual tests. It improves system operating efficiency while ensuring refrigeration performance, exhibiting significant technological advancement and practical application value. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the refrigerator system structure to which the self-operation control method for refrigerator defects provided in an embodiment of the present invention is applied.

[0026] Figure 2 This is a flowchart illustrating the self-operation control process when the temperature sensor in the refrigerator compartment malfunctions, as described in this embodiment of the invention.

[0027] Figure 3 This is a flowchart illustrating the self-operation control process when the temperature sensor in the variable temperature chamber malfunctions, as described in this embodiment of the invention.

[0028] Figure 4 This is a flowchart illustrating the self-operation control process when the freezer temperature sensor malfunctions, as described in this embodiment of the invention. Detailed Implementation

[0029] To more clearly illustrate the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments described are only for illustrating the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0030] Without conflict, the technical features in this application can be combined arbitrarily; and the structures or processes shown in the accompanying drawings are merely illustrative, intended to aid in understanding the core ideas and technical solutions of this invention. Those skilled in the art should understand that, based on the description of this invention, equivalent substitutions or optimizations can be made to specific structures, control parameters, logical judgment methods, etc., and these equivalent transformations should also be included within the scope of protection of this invention.

[0031] See Figure 1 The present invention provides a self-operation control method for refrigerator defects, which is applicable to intelligent refrigerator systems containing multiple refrigeration compartments, specifically including three independent compartments: a refrigerator compartment, a variable temperature compartment, and a freezer compartment. Each compartment is equipped with an independent temperature sensor and refrigeration actuator according to different functional requirements.

[0032] In one embodiment of the invention, the refrigeration compartment is equipped with a refrigeration damper for adjusting the air supply volume, and the variable temperature compartment is equipped with a variable temperature damper to control the air exchange between the variable temperature compartment and the main cooling circuit; the freezer compartment is mainly regulated by a compressor, which also serves the entire refrigeration system. Temperature sensors in each compartment are used to collect the current temperature status within the compartment in real time and use this data as the basis for controlling the operation of the actuators.

[0033] Furthermore, the refrigerator is equipped with a central control unit for unified scheduling and control of the operating status of each compartment. This control unit is connected to temperature sensors, damper actuators, and the compressor, and has a built-in data acquisition and computing module. The data acquisition module is used to continuously acquire key operating parameters of each refrigeration component during normal refrigerator operation, including but not limited to: damper opening and closing durations, compressor operating time, and operating speed information.

[0034] Preferably, the control unit is also equipped with a cache module for storing operating parameters recorded within a set time period (e.g., the most recent 24 hours). When a temperature sensor in a compartment malfunctions, the control unit can automatically retrieve historical operating data from the cache and, in conjunction with built-in averaging logic or weighted algorithms, generate a temporary operating control strategy for the cooling actuators of that compartment, thereby achieving continuous operating control in the absence of sensor feedback.

[0035] Optionally, the system also supports independent monitoring and distributed processing of the operating status of each compartment. If a sensor in one compartment fails, it will not affect the normal operation of other compartments, thereby improving the stability and reliability of the entire refrigerator system.

[0036] Through the above structural design, this embodiment provides an adaptive control system for sensor defect scenarios, providing a structural support foundation for the damper control logic and compressor control strategy in subsequent embodiments.

[0037] Implementation Method 1: Control Logic When the Refrigerator Compartment Sensor Fails See Figure 2 This invention provides a strategy for how the system can drive the air damper control through historical data when the refrigerator's temperature sensor malfunctions.

[0038] In one embodiment of the invention, the control system first initializes the automatic opening and closing duration of the refrigeration damper to guide the operation of the refrigeration compartment in the absence of temperature feedback. The initial value of this opening and closing duration can be derived from historical averages prior to a fault, or configured according to the equipment's factory settings.

[0039] Furthermore, the control logic executes the following steps in a loop: Step S1: The system initializes the automatic opening and closing parameters of the refrigeration damper, including the opening duration and closing duration; Step S2: Determine if the refrigerator compartment temperature sensor is malfunctioning; If not, proceed to step S8 and continue operating according to the normal temperature control logic; If so, proceed with the fault control process; Step S3: Determine whether the refrigerator door is currently open; If so, proceed to step S4; If not, skip to step S6; Step S4: Determine whether the refrigeration door has been open for the currently set "automatic opening duration"; If the condition is met, proceed to step S5 to close the damper; If the condition is not met, proceed to step S13 and maintain the current state. Step S5: Close the refrigerator door; Step S6: If the damper is in the closed state, determine whether its closing time has reached the set "automatic closing time"; If the desired effect is achieved, proceed to step S7 to open the damper; If not achieved, proceed to step S13; Step S7: Open the refrigerator door; Step S13: Jump back to step S2 and execute the control logic repeatedly to ensure continuous system operation.

[0040] If no fault is detected in the control logic, i.e., when the temperature sensor is working properly, the system executes according to the traditional closed-loop temperature control logic: Step S8: Control the opening and closing of the air damper based on the real-time temperature information of the refrigerator compartment; Step S9: Determine whether this is the first time the cabin has reached the shutdown point (i.e., the set target temperature) in this operating cycle. If so, proceed to step S10; If not, proceed to step S13; Step S10: Further determine whether the refrigerator door has opened / closed; If any action is taken, proceed to step S11; Step S11: Record the opening and closing durations of the damper during this opening and closing cycle to the cache; Step S12: Based on multiple recording periods, calculate the updated automatic switching duration parameters using the averaging method or weighted averaging method, for future recall in case of failure; Finally, return to step S13 and re-enter the judgment loop.

[0041] Preferably, when calculating the average value, the system can assign higher weights to the most recent historical data based on their proximity to the current time, in order to improve the environmental adaptability of the control strategy.

[0042] Through the above implementation method, even if the refrigerator compartment temperature sensor fails, the refrigerator system can continue to control the damper to open and close periodically according to historical operating patterns, effectively extending the cooling function, reducing reliance on a single sensor, and improving the refrigerator's fault tolerance and system robustness.

[0043] Implementation Method 2: Control Logic When the Temperature Variable Temperature Room Sensor Fails See Figure 3 The present invention further provides an automatic operation control strategy in case of failure of the temperature sensor in the variable temperature chamber, which uses historical data to drive the damper control method to achieve reliable temperature regulation of the variable temperature chamber.

[0044] In one embodiment of the present invention, the system first initializes the automatic opening and closing parameters of the variable temperature damper, including the opening duration and closing duration, to support control execution when real-time temperature feedback is lost.

[0045] The control logic mainly includes the following steps, which are executed cyclically in the system: Step S1: Initialize the automatic opening and closing duration parameters of the variable temperature damper; Step S2: Determine if the temperature sensor in the variable temperature chamber is malfunctioning; If no fault occurs, proceed to step S8; If a malfunction occurs, the subsequent automatic operation control process will be executed; Step S3: Determine whether the current temperature-controlled damper is in the open state; If it is in the open state, proceed to step S4; If it is in the closed state, proceed to step S6; Step S4: Determine whether the damper opening time has reached the set automatic opening time threshold; If the condition is met, proceed to step S5; If not achieved, proceed to step S13; Step S5: Close the variable temperature damper and proceed to step S13; Step S6: Determine whether the damper closing time has reached the set automatic closing time threshold; If the condition is met, proceed to step S7; If not achieved, proceed to step S13; Step S7: Open the variable temperature air damper; Step S13: Return to step S2 and proceed to the next round of judgment.

[0046] If the temperature sensor is not malfunctioning, the system continues to execute the normal temperature control strategy and uses it to acquire training data. Step S8: The system controls the opening and closing of the variable temperature damper based on the real-time temperature information provided by the sensor; Step S9: Determine whether the variable temperature chamber has reached the shutdown point for the first time (i.e., the chamber temperature has reached the target value). If so, proceed to step S10; If not, proceed to step S13; Step S10: Determine whether the damper has opened / closed during the current cycle; If this occurs, proceed to step S11; If this does not occur, proceed to step S13; Step S11: Record the opening and closing duration of the damper to the cache data module; Step S12: Based on multiple switching cycles, calculate the updated automatic control parameters, including the average on duration and the average off duration, using the averaging method or the weighted average method. The results will serve as the basis for self-operation control in the event of future failures; Return to step S13 and repeat the process.

[0047] Preferably, in order to improve the timeliness and accuracy of control, the weighted average method can assign higher weights to historical data that is closer to the current time, thereby reducing the interference of old data deviations on damper behavior decisions.

[0048] This embodiment constructs a data-driven control model of "learning-recording-reusing" to enable reasonable damper control based on the historical operating patterns of the refrigerator even when the temperature sensor in the variable temperature compartment fails, thus ensuring the preservation of food and improving the robustness of the refrigerator control system and the user experience.

[0049] Implementation Method 3: Control Logic When the Freezer Compartment Sensor Fails See Figure 4 This invention also provides an adaptive control strategy for maintaining continuous cooling operation of the compressor in the event of a malfunction in the freezer compartment temperature sensor. This strategy collects and analyzes the compressor's on / off operating patterns and speed settings before the malfunction to construct a periodic control model, thereby maintaining the basic temperature control function of the freezer compartment.

[0050] In one embodiment of the present invention, the control system first initializes the automatic control parameters of the compressor, including the automatic start-up duration, the automatic stop-up duration, and the default operating level, in order to support compressor refrigeration under conditions where temperature feedback is lacking.

[0051] The control process includes the following steps, which the system executes cyclically: Step S1: Initialize the compressor's automatic on / off duration and operating speed; Step S2: Determine if the freezer temperature sensor is malfunctioning; If no fault occurs, proceed to step S8 to execute normal temperature control logic; If a fault is detected, the compressor will enter its automatic operation process. Step S3: Determine whether the compressor is currently on; If it is in the open state, proceed to step S4; If it is in the closed state, proceed to step S6; Step S4: Determine whether the compressor has been running for the set automatic start time; If the condition is met, proceed to step S5 to shut down the compressor; If not achieved, proceed to step S13; Step S5: Turn off the compressor and proceed to step S13; Step S6: Determine whether the current shutdown time of the compressor has reached the set automatic shutdown time; If the condition is met, proceed to step S7; If not achieved, proceed to step S13; Step S7: Turn on the compressor and set it to automatic operation mode; Step S13: Jump back to step S2 and continue the next round of loop judgment.

[0052] When the temperature sensor is operating normally, the system executes standard closed-loop temperature control and performs training based on operational data: Step S8: The compressor starts and stops according to the real-time temperature information fed back by the freezer compartment sensor; Step S9: Determine if the freezer compartment has reached the shutdown point for the first time; If the condition is met, proceed to step S10; If not achieved, proceed to step S13; Step S10: Determine whether the compressor has started or stopped during the current cycle; If there is a start / stop action, proceed to step S11; Otherwise, proceed to step S13; Step S11: Record the compressor's on-time, off-time, and current operating speed within the cycle to the buffer; Step S12: By averaging or weighted averaging multiple periodic data, the average start-up time, shut-off time, and preferred operating gear of the compressor are obtained, which will serve as automatic control parameters in the event of a sensor failure in the future.

[0053] Preferably, during the average calculation process, the most recent operating data that is close to the time of failure is given higher weight to enhance the adaptability of the control strategy to the current ambient temperature and user behavior.

[0054] Optionally, the operating level can be dynamically selected based on the cooling load demand, maintaining the freezer temperature at a relatively stable level during fault self-operation, and preventing abnormal storage caused by over-cooling or under-cooling.

[0055] Through the above control mechanism, even if the freezer temperature sensor fails, the present invention can still build an adaptive compressor operation model based on historical learning data, achieve a seamless transition to the fault operation state, and effectively ensure food safety and the continuous and stable operation of the refrigerator system.

[0056] General Control Mechanism Description In various embodiments of the present invention, the system not only designs independent self-operating control logic for the refrigerator compartment, the variable temperature compartment and the freezer compartment respectively, but also constructs a unified general control mechanism to realize continuous detection of sensor status, dynamic updating of control parameters and system-level fault-tolerant operation under local functional defects.

[0057] In a preferred embodiment of the present invention, the monitoring module embedded in the control system can monitor the status of temperature sensors in each compartment in real time. When a sensor exhibits fault characteristics such as communication interruption, signal abnormality, or prolonged unresponsiveness, the system will trigger the self-operation control logic of the corresponding compartment and immediately switch to a control mode based on historical data to avoid cooling interruption due to sensor failure.

[0058] Furthermore, to improve control accuracy, the system employs a sliding time window mechanism to continuously record the operating data (such as on / off duration and operating speed) of each refrigeration actuator, and automatically updates the control parameters used for self-operation according to a preset cycle (such as every 24 hours). The calculation process can use the averaging method or the weighted average method, and prioritizes retaining operating data closer to the current time, thereby enhancing the strategy's environmental adaptability.

[0059] This invention also supports dynamic learning and a back-switch mechanism. When the system is in self-running mode, the control logic will continue to cyclically detect the status of the faulty sensor. Once the sensor is detected to have returned to normal, the system will automatically switch from data-driven mode back to closed-loop control based on temperature feedback to ensure continuous operation and optimal energy efficiency.

[0060] Furthermore, the entire system architecture features excellent modular scalability and inter-compartment independence. Even if one compartment enters a defective state, it will not affect the normal operation of other compartments, avoiding system-wide downtime and significantly improving the overall reliability and user experience.

[0061] In summary, the universal control mechanism constructed in this invention introduces an intelligent fault-tolerant strategy that combines "historical data-driven operation + fault perception + adaptive operation" on the basis of traditional multi-compartment refrigerator control. This provides strong technical support for the stable operation of refrigerators in complex environments and has high practical value and industrial promotion potential.

[0062] This invention proposes a self-operating control method for refrigerators in the event of defects. When the compartment temperature sensor malfunctions, it constructs a control strategy adapted to the current environment based on historical operating parameters, enabling continuous and effective operation of the cooling function in each compartment. This overcomes the single-point dependence on real-time temperature feedback in traditional methods. This method possesses good environmental adaptability, control accuracy, and system robustness, effectively improving the stability of the refrigerator under abnormal operating conditions and enhancing the user experience. It demonstrates strong technological advancement and industrial application value.

[0063] It should be understood that the above description is merely a description of several embodiments of the present invention and is not intended to limit the scope of protection of the present invention. For those skilled in the art, various modifications, substitutions, or equivalent transformations can be made to the technical solutions of the present invention without departing from the basic concept of the present invention, and these equivalent transformations should also be considered to fall within the scope of protection of the present invention.

Claims

1. A self-operation control method for refrigerator defects, applied to a refrigerator with multiple independent refrigeration compartments, each compartment being equipped with a temperature sensor and a corresponding refrigeration actuator, characterized in that... The method includes: During normal refrigerator operation, the operating parameters of each refrigeration component are continuously collected and recorded within a preset time period; When a temperature sensor malfunction is detected in any target compartment, the corresponding operational data for that target compartment is extracted from the operational parameters. Based on the extracted data, the average control parameters of the refrigeration actuators corresponding to the target compartment are calculated; During a temperature sensor malfunction, the refrigeration actuator is controlled to operate according to the average control parameters.

2. The method according to claim 1, characterized in that, The refrigeration actuator includes at least one of a refrigeration damper, a variable temperature damper, and a compressor; the operating parameters include the opening and closing duration of the damper, the on / off duration of the compressor, and the operating speed.

3. The method according to claim 2, characterized in that, When the malfunction occurs in the refrigerator or variable temperature compartment: Based on historical data from multiple switching cycles, the average opening duration and average closing duration of the damper are calculated respectively, and used as the average control parameters. The control damper is periodically opened and closed according to the average opening and closing duration.

4. The method according to claim 2, characterized in that, When the malfunction occurs in the freezer compartment: The average start-up and shut-down times of the compressor are calculated based on historical switching cycles; Based on historical operating settings, determine the compressor's operating setting during the fault period; The compressor is controlled to operate periodically based on the average start-up time, stop-down time, and operating speed.

5. The method according to any one of claims 1 to 4, characterized in that, The timing for recording the operating parameters is as follows: when the temperature control of the corresponding compartment reaches the preset shutdown point, the on / off duration and / or gear information of the refrigeration actuator within that cycle are recorded.

6. The method according to any one of claims 1 to 4, characterized in that, The preset time period is the normal operating period within the most recent 24 hours before the fault.

7. The method according to any one of claims 1 to 4, characterized in that, The average control parameters are calculated using a weighted average method, where historical parameters closer to the time of sensor failure have higher weights.

8. The method according to any one of claims 1 to 4, characterized in that, The extraction, calculation, and control steps are executed cyclically to achieve continuous monitoring of the sensor status and dynamic updating of control parameters.

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