Refrigerator fault detection method and device, refrigerator and computer readable storage medium

Abstract

The invention relates to the technical field of intelligent household appliances, and discloses a refrigerator fault detection method which comprises the following steps: determining a corresponding to-be-detected load according to fault state information of a refrigerator sensor and an abnormal operation state of a compressor; determining a refrigerator fault type according to the load power value of the to-be-detected load and the refrigerator reference power value; wherein the number of the loads to be detected is one or more. According to the method, when the refrigerator breaks down, after-sales maintenance personnel can quickly, accurately and comprehensively locate the fault reason of the refrigerator, and the working efficiency of the after-sales maintenance personnel and the experience of a refrigerator user are improved. The invention further discloses a device for refrigerator fault detection, the refrigerator and a computer readable storage medium.

Description

Technical Field

[0001] The present application relates to the technical field of smart home appliances, and for example, relates to a method and device for refrigerator fault detection, a refrigerator, and a computer-readable storage medium. Background Art

[0002] Currently, with the development of mobile Internet and artificial intelligence, smart home appliances have entered people's lives and changed people's lifestyles. As an important part of the home appliance field, refrigerators are inevitably developing towards high-end intelligence.

[0003] In order to achieve high-end intelligence of refrigerators, related technologies disclose that refrigerators need to use many electronic devices such as sensors to detect parameters during the operation of the refrigerator to achieve high-end intelligence of the refrigerator. For aesthetics and practicality, these electronic devices are often encapsulated in a highly sealed space.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related technologies:

[0005] There are many electronic devices in the refrigerator and the sealing is strong. When the refrigerator fails, it is difficult for after-sales maintenance personnel to quickly, accurately, and comprehensively locate the cause of the refrigerator failure, resulting in low work efficiency of after-sales maintenance personnel and poor experience of refrigerator users.

[0006] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Invention

[0007] To have a basic understanding of some aspects of the disclosed embodiments, a simple summary is given below. The summary is not a general review, nor is it intended to identify key / important constituent elements or delineate the protection scope of these embodiments, but rather serves as a preface to the subsequent detailed description.

[0008] The embodiments of the present disclosure provide a method and device for refrigerator fault detection, a refrigerator, and a computer-readable storage medium, so that when the refrigerator fails, after-sales maintenance personnel can quickly, accurately, and comprehensively locate the cause of the refrigerator failure, improving the work efficiency of after-sales maintenance personnel and the experience of refrigerator users.

[0009] In some embodiments, the method includes: determining a corresponding load to be detected according to the fault status information of the refrigerator sensor and the abnormal operation status of the compressor; determining the refrigerator fault type according to the load power value of the load to be detected and the refrigerator reference power value; where the number of loads to be detected is single or multiple.

[0010] Optionally, determine the corresponding load to be detected according to the fault status information of the refrigerator sensors and the abnormal operation status of the compressor, including: when the abnormal operation status of the compressor is normal, determine the corresponding load to be detected according to the fault status information of the refrigerator sensors; when the abnormal operation status of the compressor is abnormal, determine that the refrigerator fault type is compressor abnormality.

[0011] Specifically, the abnormal operation status of the compressor being normal includes: the difference between the operating speed of the compressor and the set speed is within the normal range of speed difference. The abnormal operation status of the compressor being abnormal includes: the difference between the operating speed of the compressor and the set speed is not within the normal range of speed difference.

[0012] More specifically, the value range of the normal range of speed difference is [-10 r / min (revolutions per minute), 10 r / min]. The value range of the set speed is [1000 r / min, 5000 r / min].

[0013] Optionally, determining the corresponding load to be detected according to the fault status information of the refrigerator sensors includes: determining that the fault status information of the refrigerator sensors is the first type of abnormality or the second type of abnormality; when the fault status of the refrigerator sensors is the first type of abnormality, determining that the corresponding load to be detected is a single load; and / or, when the fault status of the refrigerator sensors is the second type of abnormality, determining that the corresponding load to be detected is multiple loads.

[0014] Optionally, the first type of abnormality includes any one or more of the following: abnormal temperature of the refrigerating defrost sensor, abnormal temperature of the freezing defrost sensor, abnormal refrigerating fan, abnormal freezing fan, abnormal cooling fan, abnormal solenoid valve, abnormal compressor speed.

[0015] Optionally, the second type of abnormality includes any one or more of the following: abnormal temperature of the refrigerating sensor, abnormal temperature of the freezing sensor, abnormal variable temperature sensor, abnormal ice maker sensor.

[0016] Optionally, when the failure state of the refrigerator sensor is a first - type anomaly, determining the corresponding load to be detected as a single load includes: when the failure state of the refrigerator sensor is that the temperature of the refrigeration defrost sensor is abnormal, determining the corresponding load to be detected as the refrigeration defrost heating wire; and / or, when the failure state of the refrigerator sensor is that the temperature of the freezing defrost sensor is abnormal, determining the corresponding load to be detected as the freezing defrost heating wire; and / or, when the failure state of the refrigerator sensor is that the refrigeration fan is abnormal, determining the corresponding load to be detected as the refrigeration fan; and / or, when the failure state of the refrigerator sensor is that the freezing fan is abnormal, determining the corresponding load to be detected as the freezing fan; and / or, when the failure state of the refrigerator sensor is that the cooling fan is abnormal, determining the corresponding load to be detected as the cooling fan; and / or, when the failure state of the refrigerator sensor is that the solenoid valve is abnormal, determining the corresponding load to be detected as the solenoid valve; and / or, when the failure state of the refrigerator sensor is that the compressor speed is abnormal, determining the corresponding load to be detected as the compressor.

[0017] Optionally, when the failure state of the refrigerator sensor is a second - type anomaly, determining the corresponding load to be detected as multiple loads includes: when the failure state of the refrigerator sensor is that the temperature of the refrigeration sensor is abnormal, determining the corresponding load to be detected as the refrigeration fan, the cooling fan, the solenoid valve, and the compressor; and / or, when the failure state of the refrigerator sensor is that the temperature of the freezing sensor is abnormal, determining the corresponding load to be detected as the freezing fan, the cooling fan, the solenoid valve, and the compressor; and / or, when the failure state of the refrigerator sensor is that the temperature of the variable - temperature sensor is abnormal, determining the corresponding load to be detected as the variable - temperature air damper, the freezing fan, the cooling fan, the solenoid valve, and the compressor; and / or, when the failure state of the refrigerator sensor is that the ice - maker sensor is abnormal, determining the corresponding load to be detected as the freezing fan, the cooling fan, the solenoid valve, and the compressor.

[0018] Optionally, the failure - state information of the refrigerator sensor is determined in the following manner: determining the failure - state information of the refrigerator sensor according to the set temperature and / or set duty cycle of the refrigerator sensor.

[0019] Optionally, determining the failure - state information of the refrigerator sensor according to the set temperature and / or set duty cycle of the refrigerator sensor includes: determining that the failure state of the refrigerator sensor is one or more of abnormal temperature of the refrigeration sensor, abnormal temperature of the freezing sensor, abnormal temperature of the variable - temperature sensor, abnormal temperature of the refrigeration defrost sensor, abnormal temperature of the freezing defrost sensor, abnormal temperature of the ambient - temperature sensor, and abnormal temperature of the ice - maker sensor according to the difference between the temperature of the refrigerator sensor and the set temperature; and / or, determining that the failure state of the refrigerator sensor is one or more of abnormal refrigeration fan, abnormal freezing fan, and abnormal cooling fan according to the difference between the duty cycle of the refrigerator sensor and the set duty cycle.

[0020] Specifically, according to the difference between the temperature of the refrigerator sensor and the set temperature, the fault state of the refrigerator sensor is determined to be one or more of abnormal temperature of the refrigerating sensor, abnormal temperature of the freezing sensor, abnormal temperature of the variable temperature sensor, abnormal temperature of the refrigerating defrosting sensor, abnormal temperature of the freezing defrosting sensor, abnormal temperature of the ambient temperature sensor, and abnormal temperature of the ice maker sensor, including: when the difference between the temperature of the refrigerating sensor and the refrigerating set temperature is greater than or equal to the set temperature difference value, determining that the fault state of the refrigerator sensor is abnormal temperature of the refrigerating sensor; and / or, when the difference between the temperature of the freezing sensor and the freezing set temperature is greater than or equal to the set temperature difference value, determining that the fault state of the refrigerator sensor is abnormal temperature of the freezing sensor; and / or, when the difference between the temperature of the variable temperature sensor and the variable temperature set temperature is greater than or equal to the set temperature difference value, determining that the fault state of the refrigerator sensor is abnormal temperature of the variable temperature sensor; and / or, when the difference between the temperature of the refrigerating defrosting sensor and the refrigerating defrosting set temperature is greater than or equal to the set temperature difference value, determining that the fault state of the refrigerator sensor is abnormal temperature of the refrigerating defrosting sensor; and / or, when the difference between the temperature of the freezing defrosting sensor and the freezing defrosting set temperature is greater than or equal to the set temperature difference value, determining that the fault state of the refrigerator sensor is abnormal temperature of the freezing defrosting sensor; and / or, when the difference between the temperature of the ambient temperature sensor and the ambient temperature set temperature is greater than or equal to the set temperature difference value, determining that the fault state of the refrigerator sensor is abnormal temperature of the ambient temperature sensor; and / or, when the difference between the temperature of the ice maker sensor and the ice maker set temperature is greater than or equal to the set temperature difference value, determining that the fault state of the refrigerator sensor is abnormal temperature of the ice maker sensor.

[0021] More specifically, the value range of the set temperature is [-40°C, 40°C], and the value range of the set temperature difference value is [-1°C, 1°C].

[0022] Specifically, according to the difference between the duty cycle of the refrigerator sensor and the set duty cycle, determine that the fault state of the refrigerator sensor is one or more of abnormal refrigeration fan, abnormal freezing fan, and abnormal cooling fan, including: when the difference between the duty cycle of the refrigeration fan sensor and the set duty cycle of the refrigeration fan is greater than or equal to the set duty cycle difference, determine that the fault state of the refrigerator sensor is abnormal refrigeration fan; and / or, when the difference between the duty cycle of the freezing fan sensor and the set duty cycle of the freezing fan is greater than or equal to the set duty cycle difference, determine that the fault state of the refrigerator sensor is abnormal freezing fan; and / or, when the difference between the duty cycle of the cooling fan sensor and the set duty cycle of the cooling fan is greater than or equal to the set duty cycle difference, determine that the fault state of the refrigerator sensor is abnormal cooling fan. More specifically, the value range of the set duty cycle is [0, 100%]. The value of the set duty cycle difference can be [-1%, 1%].

[0023] Optionally, according to the load power value of the load to be detected and the reference power value of the refrigerator, determine the refrigerator fault type, including: determining the reference power value of the refrigerator; according to the reference power value of the refrigerator, determining the load power value of the load to be detected; determining the fault of the load to be detected with abnormal load power value.

[0024] Optionally, determining the reference power value of the refrigerator includes: when all the loads of the refrigerator are turned off for the first duration for the jth time, detecting the standby power of the refrigerator at the current moment as the jth refrigerator standby power value; removing the maximum and minimum values of the M refrigerator standby power values and then taking the average to obtain the reference power value of the refrigerator; where j = 1, 2,..., M; M is the total number of times of turning off all the loads of the refrigerator. Specifically, the value of M can be 10.

[0025] Optionally, before all the loads of the refrigerator are turned off for the first duration for the jth time, it further includes: controlling all the loads of the refrigerator to be turned off for the jth time. Specifically, the value of the first duration can be 5s.

[0026] Optionally, according to the reference power value of the refrigerator, determining the load power value of the load to be detected includes: when the ith load to be detected runs alone for the second duration, detecting the total power value of the corresponding refrigerator as the ith total power value; determining the load power value of the ith load to be detected according to the reference power value of the refrigerator and the ith total power value; where i = 1, 2,..., N; N is the total number of loads to be detected.

[0027] Optionally, the value of the second duration can be 3s.

[0028] Optionally, determining the load power value of the ith load to be detected according to the reference power value of the refrigerator and the ith total power value includes: calculating the difference between the ith total power value and the reference power value of the refrigerator as the load power value of the ith load to be detected.

[0029] Optionally, determining a load fault to be detected with an abnormal load power value includes: determining a power difference between the load power value and the set load power value; determining a load fault to be detected where the power difference is within the corresponding abnormal load power range.

[0030] Specifically, determining a load fault to be detected where the power difference is within the corresponding abnormal load power range includes: when the power difference of the refrigerated door body lamp is within the abnormal power range of the refrigerated door body lamp, determining that the refrigerated door body lamp is faulty; and / or, when the power difference of the refrigerated lighting lamp is within the abnormal power range of the refrigerated lighting lamp, determining that the refrigerated lighting lamp is faulty; and / or, when the power difference of the freezing defrosting heating wire is within the abnormal power range of the freezing defrosting heating wire, determining that the freezing defrosting heating wire is faulty; and / or, when the power difference of the refrigerated defrosting heating wire is within the abnormal power range of the refrigerated defrosting heating wire, determining that the refrigerated defrosting heating wire is faulty; and / or, when the power difference of the upright beam heating wire is within the abnormal power range of the upright beam heating wire, determining that the upright beam heating wire is faulty; and / or, when the power difference of the solenoid valve is within the abnormal power range of the solenoid valve, determining that the solenoid valve is faulty; and / or, when the power difference of the cooling fan is within the abnormal power range of the cooling fan, determining that the cooling fan is faulty; and / or, when the power difference of the refrigerated fan is within the abnormal power range of the refrigerated fan, determining that the refrigerated fan is faulty; and / or, when the power difference of the freezing fan is within the abnormal power range of the freezing fan, determining that the freezing fan is faulty; and / or, when the power difference of the variable temperature air damper is within the abnormal power range of the variable temperature air damper, determining that the variable temperature air damper is faulty; and / or, when the power difference of the sterilization module is within the abnormal power range of the sterilization module, determining that the sterilization module is faulty; and / or, when the power difference of the compressor is within the abnormal power range of the compressor, determining that the compressor is faulty.

[0031] Specifically, the value range of the abnormal power range of the refrigerated door body lamp is [10W, 25W]. The value range of the abnormal power range of the refrigerated lighting lamp is [3W, 7W]. The value range of the abnormal power range of the freezing defrosting heating wire is [160W, 220W]. The value range of the abnormal power range of the refrigerated defrosting heating wire is [15W, 35W]. The value range of the abnormal power range of the upright beam heating wire is [15W, 25W]. The value range of the abnormal power range of the solenoid valve is [6W, 13W]. The value range of the abnormal power range of the cooling fan is [3W, 7W]. The value range of the abnormal power range of the refrigerated fan is [4W, 9W]. The value range of the abnormal power range of the freezing fan is [3W, 9W]. The value range of the abnormal power range of the variable temperature air damper is [3W, 8W]. The value range of the abnormal power range of the sterilization module is [3W, 12W]. The value range of the abnormal power range of the compressor is [20W, 150W].

[0032] Optionally, before determining the corresponding load to be detected according to the fault status information of the refrigerator sensor and the abnormal operation status of the compressor, it further includes: controlling the compressor to start through a PWM (Pulse Width Modulation) square wave signal. Detecting the abnormal operation status of the compressor.

[0033] Optionally, after the abnormal operation status of the compressor is normal and before determining the corresponding load to be detected according to the fault status information of the refrigerator sensor, it further includes: detecting the fault status information of the refrigerator sensor.

[0034] In some embodiments, the device includes: a first determination module configured to determine the corresponding load to be detected according to the fault status information of the refrigerator sensor and the abnormal operation status of the compressor; a second determination module configured to determine the refrigerator fault type according to the load power value of the load to be detected and the refrigerator reference power value; wherein, the number of loads to be detected is single or multiple.

[0035] In some embodiments, the device includes a processor and a memory storing program instructions, and the processor is configured to execute the method for refrigerator fault detection when running the program instructions.

[0036] In some embodiments, the refrigerator includes: a refrigerator body; the device for refrigerator fault detection is installed on the refrigerator body.

[0037] In some embodiments, the computer-readable storage medium stores program instructions, and when the program instructions are running, they are used to cause a computer to execute the method for refrigerator fault detection.

[0038] The method, device, refrigerator, and computer-readable storage medium for refrigerator fault detection provided by the embodiments of the present disclosure can achieve the following technical effects:

[0039] In the case of a refrigerator failure, according to the fault status information of the refrigerator sensor and the abnormal operation status of the compressor, first determine the load to be detected that needs to be detected. The load to be detected can be single or multiple. Thus, loads that are not faulty and do not require power detection can be initially excluded to improve the fault troubleshooting efficiency. Then, according to the load power value of the load to be detected and the refrigerator reference power value, determine the refrigerator fault type. Thus, faulty loads can be further screened out to improve the fault troubleshooting efficiency. When the refrigerator fails, it enables after-sales maintenance personnel to quickly, accurately, and comprehensively locate the cause of the refrigerator failure, improving the work efficiency of after-sales maintenance personnel and the experience of refrigerator users.

[0040] The above general description and the following description are only exemplary and explanatory, and are not used to limit this application. Description of the Drawings

[0041] One or more embodiments are exemplarily illustrated by corresponding drawings. These exemplary illustrations and the drawings do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation, and wherein:

[0042] Figure 1 is a schematic diagram of a method for refrigerator fault detection provided by an embodiment of the present disclosure;

[0043] Figure 2 is a schematic diagram of another method for refrigerator fault detection provided by an embodiment of the present disclosure;

[0044] Figure 3 is a schematic diagram of another method for refrigerator fault detection provided by an embodiment of the present disclosure;

[0045] Figure 4 is a schematic diagram of another method for refrigerator fault detection provided by an embodiment of the present disclosure;

[0046] Figure 5 is a schematic diagram of another device for refrigerator fault detection provided by an embodiment of the present disclosure;

[0047] Figure 6 is a schematic diagram of another device for refrigerator fault detection provided by an embodiment of the present disclosure;

[0048] Figure 7 is a schematic diagram of a refrigerator provided by an embodiment of the present disclosure. Detailed Description of the Embodiments

[0049] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the drawings. The attached drawings are for reference and illustration purposes only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of explanation, numerous details are provided to give a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be shown in a simplified manner to simplify the drawings.

[0050] Terms such as "first", "second", etc. in the specification, claims and above-mentioned drawings of the embodiments of the present disclosure are used to distinguish similar objects and do not necessarily need to be used to describe a specific order or sequence; it should be understood that such data can be interchanged under appropriate circumstances so as to implement the embodiments of the present disclosure described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0051] Unless otherwise specified, the term "a plurality of" means two or more.

[0052] In the embodiments of the present disclosure, the character " / " indicates that the objects before and after are in an "or" relationship. For example, A / B means: A or B.

[0053] The term "and / or" is an associative relationship describing an object, indicating that there can be three relationships. For example, A and / or B means: A or B, or, A and B, these three relationships.

[0054] The term "corresponding" can refer to an associative relationship or a binding relationship. A corresponding to B means that there is an associative relationship or a binding relationship between A and B.

[0055] Combined with Figure 1 As shown, the embodiments of the present disclosure provide a method for refrigerator fault detection, including:

[0056] S101, the refrigerator determines the corresponding load to be detected according to the fault status information of the refrigerator sensor and the abnormal operation status of the compressor.

[0057] S102, the refrigerator determines the refrigerator fault type according to the load power value of the load to be detected and the refrigerator reference power value.

[0058] Wherein, the number of loads to be detected is single or multiple.

[0059] By using the method for refrigerator fault detection provided by the embodiments of the present disclosure, in the case of a refrigerator failure, according to the fault status information of the refrigerator sensor and the abnormal operation status of the compressor, first determine the load to be detected that needs to be detected. The load to be detected can be single or multiple. Thus, the loads that are not faulty and do not need to detect power can be initially excluded to improve the fault troubleshooting efficiency. Then, according to the load power value of the load to be detected and the refrigerator reference power value, determine the refrigerator fault type, thereby further screening out the faulty loads to improve the fault troubleshooting efficiency. When the refrigerator fails, it enables after-sales maintenance personnel to quickly, accurately, and comprehensively locate the cause of the refrigerator failure, improving the work efficiency of after-sales maintenance personnel and the experience of refrigerator users.

[0060] Optionally, the refrigerator determines the corresponding load to be detected according to the fault status information of the refrigerator sensor and the abnormal operation status of the compressor, including: when the abnormal operation status of the compressor is normal, the refrigerator determines the corresponding load to be detected according to the fault status information of the refrigerator sensor. When the abnormal operation status of the compressor is abnormal, it is determined that the refrigerator fault type is compressor abnormality.

[0061] In this way, according to whether the operating state of the compressor is normal or abnormal, the type of refrigerator fault caused by the compressor can be initially excluded. Thus, it can be initially determined whether the compressor needs to be tested for power. If so, the power of the compressor can be directly tested; if not, the power of the compressor does not need to be tested subsequently. Therefore, when a refrigerator fails, the after-sales maintenance personnel can quickly, accurately, and comprehensively locate the cause of the refrigerator fault, improving the work efficiency of the after-sales maintenance personnel and the experience of refrigerator users.

[0062] Specifically, the normal operating state of the compressor includes that the difference between the operating speed of the compressor and the set speed is within the normal range of the speed difference. The abnormal operating state of the compressor includes that the difference between the operating speed of the compressor and the set speed is not within the normal range of the speed difference.

[0063] More specifically, the value range of the normal range of the speed difference is [-10 r / min (revolutions per minute), 10 r / min]. The value range of the set speed is [1000 r / min, 5000 r / min].

[0064] In this way, according to whether the difference between the operating speed of the compressor and the set speed is within the normal range of the speed difference, the type of refrigerator fault caused by the compressor can be initially excluded. Thus, it can be initially determined whether the compressor needs to be tested for power. If so, the power of the compressor can be directly tested; if not, the power of the compressor does not need to be tested subsequently. Therefore, when a refrigerator fails, the after-sales maintenance personnel can quickly, accurately, and comprehensively locate the cause of the refrigerator fault, improving the work efficiency of the after-sales maintenance personnel and the experience of refrigerator users.

[0065] Optionally, the refrigerator determines the corresponding load to be tested according to the fault status information of the refrigerator sensor, including: the refrigerator determines that the fault status information of the refrigerator sensor is the first type of abnormality or the second type of abnormality. When the fault status of the refrigerator sensor is the first type of abnormality, the refrigerator determines that the corresponding load to be tested is a single load. And / or, when the fault status of the refrigerator sensor is the second type of abnormality, the refrigerator determines that the corresponding load to be tested is multiple loads.

[0066] In this way, if the type of refrigerator fault is not caused by the compressor, first determine whether the fault status of the refrigerator sensor is the first type of abnormality or the second type of abnormality to determine whether the number of corresponding loads to be tested is single or multiple. If the number of loads to be tested is single, only this load needs to be tested subsequently, thus improving the efficiency of fault troubleshooting. If the number of loads to be tested is multiple, only the loads to be tested need to be tested, without testing all loads. Therefore, when a refrigerator fails, the after-sales maintenance personnel can quickly, accurately, and comprehensively locate the cause of the refrigerator fault, improving the work efficiency of the after-sales maintenance personnel and the experience of refrigerator users.

[0067] Optionally, the first type of abnormality includes any one or more of the following: abnormal temperature of the refrigerating defrost sensor, abnormal temperature of the freezing defrost sensor, abnormal refrigerating fan, abnormal freezing fan, abnormal cooling fan, abnormal solenoid valve, abnormal compressor speed.

[0068] In this way, the temperature of the refrigerating defrost sensor only reflects the fault status information of the refrigerating defrost heating wire, the temperature of the freezing defrost sensor only reflects the fault status information of the freezing defrost heating wire, and if there are abnormalities in the refrigerating fan, freezing fan, cooling fan, solenoid valve, and compressor speed, they only reflect their own fault status information. Therefore, if the fault status of the refrigerator sensor is the first type of abnormality, the number of loads to be detected is single, and only this load needs to be detected subsequently. Thus, when the refrigerator fails, it enables after-sales maintenance personnel to quickly, accurately, and comprehensively locate the cause of the refrigerator failure, improving the work efficiency of after-sales maintenance personnel and the experience of refrigerator users.

[0069] Optionally, the second type of abnormality includes any one or more of the following: abnormal temperature of the refrigerating sensor, abnormal temperature of the freezing sensor, abnormal temperature-changing sensor, abnormal ice maker sensor.

[0070] In this way, the temperature of the refrigerating sensor reflects the fault status information of the refrigerating fan, cooling fan, solenoid valve, and compressor, the temperature of the freezing sensor reflects the fault status information of the freezing fan, cooling fan, solenoid valve, and compressor, the temperature-changing sensor reflects the fault status information of the temperature-changing air damper, freezing fan, cooling fan, solenoid valve, and compressor, and the ice maker sensor reflects the fault status information of the freezing fan, cooling fan, solenoid valve, and compressor. Therefore, if the fault status of the refrigerator sensor is the second type of abnormality, the number of loads to be detected is multiple, and only the loads to be detected need to be detected subsequently, without detecting all loads. Thus, when the refrigerator fails, it enables after-sales maintenance personnel to quickly, accurately, and comprehensively locate the cause of the refrigerator failure, improving the work efficiency of after-sales maintenance personnel and the experience of refrigerator users.

[0071] Optionally, when the failure state of the refrigerator sensor is a first - type anomaly, the refrigerator determines the corresponding load to be detected as a single load, including: when the failure state of the refrigerator sensor is that the temperature of the refrigeration defrosting sensor is abnormal, the refrigerator determines the corresponding load to be detected as the refrigeration defrosting heating wire. And / or, when the failure state of the refrigerator sensor is that the temperature of the freezing defrosting sensor is abnormal, the refrigerator determines the corresponding load to be detected as the freezing defrosting heating wire. And / or, when the failure state of the refrigerator sensor is that the refrigeration fan is abnormal, the refrigerator determines the corresponding load to be detected as the refrigeration fan. And / or, when the failure state of the refrigerator sensor is that the freezing fan is abnormal, the refrigerator determines the corresponding load to be detected as the freezing fan. And / or, when the failure state of the refrigerator sensor is that the cooling fan is abnormal, the refrigerator determines the corresponding load to be detected as the cooling fan. And / or, when the failure state of the refrigerator sensor is that the solenoid valve is abnormal, the refrigerator determines the corresponding load to be detected as the solenoid valve. And / or, when the failure state of the refrigerator sensor is that the compressor speed is abnormal, the refrigerator determines the corresponding load to be detected as the compressor.

[0072] In this way, if the failure state of the refrigerator sensor is a first - type anomaly, the refrigeration defrosting heating wire, the freezing defrosting heating wire, the refrigeration fan, the freezing fan, the cooling fan, the solenoid valve, and the compressor can be quickly determined as the single load to be detected according to the failure state of the refrigerator sensor, and the single load to be detected can be quickly detected without detecting all loads. Thus, when the refrigerator fails, the after - sales maintenance personnel can quickly, accurately, and comprehensively locate the cause of the refrigerator failure, improving the work efficiency of the after - sales maintenance personnel and the experience of refrigerator users.

[0073] Optionally, when the failure state of the refrigerator sensor is a second - type anomaly, the refrigerator determines the corresponding load to be detected as multiple loads, including: when the failure state of the refrigerator sensor is that the temperature of the refrigeration sensor is abnormal, the refrigerator determines the corresponding load to be detected as the refrigeration fan, the cooling fan, the solenoid valve, and the compressor. And / or, when the failure state of the refrigerator sensor is that the temperature of the freezing sensor is abnormal, the refrigerator determines the corresponding load to be detected as the freezing fan, the cooling fan, the solenoid valve, and the compressor. And / or, when the failure state of the refrigerator sensor is that the variable - temperature sensor is abnormal, the refrigerator determines the corresponding load to be detected as the variable - temperature air damper, the freezing fan, the cooling fan, the solenoid valve, and the compressor. And / or, when the failure state of the refrigerator sensor is that the ice - maker sensor is abnormal, the refrigerator determines the corresponding load to be detected as the freezing fan, the cooling fan, the solenoid valve, and the compressor.

[0074] In this way, if the failure state of the refrigerator sensor is a second - type anomaly, then if the temperature of the refrigerating sensor is abnormal, the loads to be detected are the refrigerating fan, the cooling fan, the solenoid valve, and the compressor. If the temperature of the freezing sensor is abnormal, the loads to be detected are the freezing fan, the cooling fan, the solenoid valve, and the compressor. If the temperature of the variable - temperature sensor is abnormal, the loads to be detected are the variable - temperature air damper, the freezing fan, the cooling fan, the solenoid valve, and the compressor. If the ice - maker sensor is abnormal, the loads to be detected are the freezing fan, the cooling fan, the solenoid valve, and the compressor. Only the loads to be detected need to be detected, without detecting all loads. Thus, when the refrigerator fails, it enables after - sales maintenance personnel to quickly, accurately, and comprehensively locate the cause of the refrigerator failure, improving the work efficiency of after - sales maintenance personnel and the experience of refrigerator users.

[0075] Optionally, the failure - state information of the refrigerator sensor is determined in the following manner: The refrigerator determines the failure - state information of the refrigerator sensor according to the set temperature and / or set duty ratio of the refrigerator sensor.

[0076] In this way, it is beneficial to more accurately determine the failure - state information of the refrigerator sensor.

[0077] Optionally, the refrigerator determines the failure - state information of the refrigerator sensor according to the set temperature and / or set duty ratio of the refrigerator sensor, including: The refrigerator determines that the failure state of the refrigerator sensor is one or more of abnormal temperature of the refrigerating sensor, abnormal temperature of the freezing sensor, abnormal temperature of the variable - temperature sensor, abnormal temperature of the refrigerating defrosting sensor, abnormal temperature of the freezing defrosting sensor, abnormal temperature of the ambient - temperature sensor, and abnormal temperature of the ice - maker sensor according to the difference between the temperature of the refrigerator sensor and the set temperature. And / or, the refrigerator determines that the failure state of the refrigerator sensor is one or more of abnormal refrigerating fan, abnormal freezing fan, and abnormal cooling fan according to the difference between the duty ratio of the refrigerator sensor and the set duty ratio.

[0078] In this way, whether the temperatures of the refrigerating sensor, the freezing sensor, the variable - temperature sensor, the refrigerating defrosting sensor, the freezing defrosting sensor, the ambient - temperature sensor, and the ice - maker sensor are abnormal can be determined by the difference from the set temperature. Whether the duty ratios of the refrigerating fan, the freezing fan, and the cooling fan are abnormal can be determined by the difference from the set duty ratio. This is beneficial to more accurately judge the failure state of the refrigerator sensor. Thus, when the refrigerator fails, it enables after - sales maintenance personnel to quickly, accurately, and comprehensively locate the cause of the refrigerator failure, improving the work efficiency of after - sales maintenance personnel and the experience of refrigerator users.

[0079] Specifically, the refrigerator determines the fault status of the refrigerator sensor as one or more of abnormal temperature of the refrigerating sensor, abnormal temperature of the freezing sensor, abnormal temperature of the variable temperature sensor, abnormal temperature of the refrigerating defrosting sensor, abnormal temperature of the freezing defrosting sensor, abnormal temperature of the ambient temperature sensor, and abnormal temperature of the ice maker sensor according to the difference between the temperature of the refrigerator sensor and the set temperature, including: when the difference between the temperature of the refrigerating sensor and the set refrigerating temperature is greater than or equal to the set temperature difference value, the refrigerator determines the fault status of the refrigerator sensor as abnormal temperature of the refrigerating sensor. And / or, when the difference between the temperature of the freezing sensor and the set freezing temperature is greater than or equal to the set temperature difference value, the refrigerator determines the fault status of the refrigerator sensor as abnormal temperature of the freezing sensor. And / or, when the difference between the temperature of the variable temperature sensor and the set variable temperature is greater than or equal to the set temperature difference value, the refrigerator determines the fault status of the refrigerator sensor as abnormal temperature of the variable temperature sensor. And / or, when the difference between the temperature of the refrigerating defrosting sensor and the set refrigerating defrosting temperature is greater than or equal to the set temperature difference value, the refrigerator determines the fault status of the refrigerator sensor as abnormal temperature of the refrigerating defrosting sensor. And / or, when the difference between the temperature of the freezing defrosting sensor and the set freezing defrosting temperature is greater than or equal to the set temperature difference value, the refrigerator determines the fault status of the refrigerator sensor as abnormal temperature of the freezing defrosting sensor. And / or, when the difference between the temperature of the ambient temperature sensor and the set ambient temperature is greater than or equal to the set temperature difference value, the refrigerator determines the fault status of the refrigerator sensor as abnormal temperature of the ambient temperature sensor. And / or, when the difference between the temperature of the ice maker sensor and the set ice maker temperature is greater than or equal to the set temperature difference value, the refrigerator determines the fault status of the refrigerator sensor as abnormal temperature of the ice maker sensor. More specifically, the value range of the set temperature is [-40°C, 40°C], and the value range of the set temperature difference value is [-1°C, 1°C].

[0080] In this way, whether the temperatures of the refrigerating sensor, the freezing sensor, the variable temperature sensor, the refrigerating defrosting sensor, the freezing defrosting sensor, the ambient temperature sensor, and the ice maker sensor are abnormal can be determined by whether the difference from the corresponding set temperature is within a certain range. This is beneficial for more accurately judging the fault status of the refrigerator sensor. Thus, when the refrigerator breaks down, it enables after-sales maintenance personnel to quickly, accurately, and comprehensively locate the cause of the refrigerator fault, improving the work efficiency of after-sales maintenance personnel and the experience of refrigerator users.

[0081] Specifically, the refrigerator determines the fault status of the refrigerator sensor as one or more of abnormal refrigerating fan, abnormal freezing fan, and abnormal cooling fan according to the difference between the duty cycle of the refrigerator sensor and the set duty cycle, including: when the difference between the duty cycle of the refrigerating fan sensor and the set duty cycle of the refrigerating fan is greater than or equal to the set duty cycle difference, the refrigerator determines that the fault status of the refrigerator sensor is abnormal refrigerating fan. And / or, when the difference between the duty cycle of the freezing fan sensor and the set duty cycle of the freezing fan is greater than or equal to the set duty cycle difference, the refrigerator determines that the fault status of the refrigerator sensor is abnormal freezing fan. And / or, when the difference between the duty cycle of the cooling fan sensor and the set duty cycle of the cooling fan is greater than or equal to the set duty cycle difference, the refrigerator determines that the fault status of the refrigerator sensor is abnormal cooling fan. More specifically, the value range of the set duty cycle is [0, 100%]. The value of the set duty cycle difference can be [-1%, 1%].

[0082] In this way, whether the duty cycles of the refrigerating fan, freezing fan, and cooling fan are abnormal can be determined by the differences from the corresponding set duty cycles. This is conducive to more accurately judging the fault status of the refrigerator sensor. Thus, when the refrigerator breaks down, it enables after-sales maintenance personnel to quickly, accurately, and comprehensively locate the cause of the refrigerator fault, improving the work efficiency of after-sales maintenance personnel and the experience of refrigerator users.

[0083] Optionally, the refrigerator determines the refrigerator fault type according to the load power value of the load to be detected and the refrigerator reference power value, including: the refrigerator determines the refrigerator reference power value. The refrigerator determines the load power value of the load to be detected according to the refrigerator reference power value. The refrigerator determines the fault of the load to be detected with an abnormal load power value.

[0084] In this way, first determine the refrigerator reference power value, then determine the load power value of the load to be detected according to the refrigerator reference power value. If the load power value is abnormal, then the load to be detected has a fault. This can further screen out the faulty load to improve the fault troubleshooting efficiency. When the refrigerator breaks down, it enables after-sales maintenance personnel to quickly, accurately, and comprehensively locate the cause of the refrigerator fault, improving the work efficiency of after-sales maintenance personnel and the experience of refrigerator users.

[0085] Optionally, the refrigerator determines the refrigerator reference power value, including: when all the loads of the refrigerator are turned off for the first duration for the jth time, the refrigerator detects the standby power of the refrigerator at the current moment as the jth refrigerator standby power value. The refrigerator removes the maximum value and the minimum value of the M refrigerator standby power values and then calculates the average value to obtain the refrigerator reference power value. Where j = 1, 2,..., M. M is the total number of times of turning off all the loads of the refrigerator. Specifically, the value of M can be 10.

[0086] In this way, all loads are turned off multiple times to put the refrigerator in the standby state. Multiple standby power values are detected, and the maximum and minimum values are removed, and then the average value is obtained as the refrigerator reference power value, which helps to make the refrigerator reference power value more accurate. Thus, the load power value to be detected can be determined more accurately. When the refrigerator fails, the after-sales maintenance personnel can accurately locate the cause of the refrigerator failure, improving the work efficiency of the after-sales maintenance personnel and the experience of refrigerator users.

[0087] Optionally, before all loads of the refrigerator are turned off for the j-th time for the first duration, it further includes: the refrigerator controls all loads of the refrigerator to be turned off for the j-th time. Specifically, the value of the first duration can be 5s.

[0088] In this way, at the moment when all the refrigerator loads are just turned off, the standby total power value of the refrigerator is not stable at this time. Therefore, it is necessary to detect the standby total power after all loads are turned off for the first duration.

[0089] Optionally, the refrigerator determines the load power value of the load to be detected according to the refrigerator reference power value, including: when the i-th load to be detected of the refrigerator operates alone for the second duration, the detected total power value of the corresponding refrigerator is the i-th total power value; the load power value of the i-th load to be detected is determined according to the refrigerator reference power value and the i-th total power value. Wherein, i = 1, 2,..., N. N is the total number of loads to be detected. Specifically, the value of the second duration can be 3s.

[0090] In this way, at the initial moment when the i-th load to be detected operates alone, the i-th total power value of the refrigerator is not stable at this time. Therefore, it is necessary to detect the total power value after the i-th load to be detected operates alone for the second duration. The load power value of the i-th load to be detected is determined according to the refrigerator reference power value and the i-th total power value. It helps to more accurately determine the load power value to be detected. When the refrigerator fails, the after-sales maintenance personnel can accurately locate the cause of the refrigerator failure, improving the work efficiency of the after-sales maintenance personnel and the experience of refrigerator users.

[0091] Optionally, the refrigerator determines the load power value of the i-th load to be detected according to the refrigerator reference power value and the i-th total power value, including: the refrigerator calculates the difference between the i-th total power value and the refrigerator reference power value as the load power value of the i-th load to be detected. Thus, it helps to make the refrigerator reference power value more accurate, and further more accurately determine the load power value to be detected. When the refrigerator fails, the after-sales maintenance personnel can accurately locate the cause of the refrigerator failure, improving the work efficiency of the after-sales maintenance personnel and the experience of refrigerator users.

[0092] In this way, the i-th total power value corresponds to the sum of the power value of the i-th load to be detected and the standby total power value. Therefore, it is necessary to subtract the reference power value of the refrigerator to obtain the difference in order to obtain the power value of the i-th load to be detected. When the refrigerator malfunctions, it enables after-sales maintenance personnel to accurately locate the cause of the refrigerator malfunction, improving the work efficiency of after-sales maintenance personnel and the experience of refrigerator users.

[0093] Optionally, the refrigerator determines the load fault to be detected with an abnormal load power value, including: the refrigerator determines that the difference between the load power value and the set load power value is the power difference. The refrigerator determines the load fault to be detected when the power difference is within the corresponding abnormal load power range.

[0094] In this way, if the difference between the load power value and the set load power value is within the corresponding abnormal load power range, it is determined that the load to be detected is abnormal. When the refrigerator malfunctions, it enables after-sales maintenance personnel to quickly, accurately, and comprehensively locate the cause of the refrigerator malfunction, improving the work efficiency of after-sales maintenance personnel and the experience of refrigerator users.

[0095] Specifically, the refrigerator determines the load fault to be detected when the power difference is within the corresponding abnormal load power range, including: the refrigerator determines a fault in the refrigerated door body light when the power difference of the refrigerated door body light is within the abnormal power range of the refrigerated door body light. And / or, the refrigerator determines a fault in the refrigerated lighting lamp when the power difference of the refrigerated lighting lamp is within the abnormal power range of the refrigerated lighting lamp. And / or, the refrigerator determines a fault in the defrost heating wire of the freezer when the power difference of the defrost heating wire of the freezer is within the abnormal power range of the defrost heating wire of the freezer. And / or, the refrigerator determines a fault in the defrost heating wire of the refrigerated compartment when the power difference of the defrost heating wire of the refrigerated compartment is within the abnormal power range of the defrost heating wire of the refrigerated compartment. And / or, the refrigerator determines a fault in the vertical beam heating wire when the power difference of the vertical beam heating wire is within the abnormal power range of the vertical beam heating wire. And / or, the refrigerator determines a fault in the solenoid valve when the power difference of the solenoid valve is within the abnormal power range of the solenoid valve. And / or, the refrigerator determines a fault in the cooling fan when the power difference of the cooling fan is within the abnormal power range of the cooling fan. And / or, the refrigerator determines a fault in the refrigerated fan when the power difference of the refrigerated fan is within the abnormal power range of the refrigerated fan. And / or, the refrigerator determines a fault in the freezer fan when the power difference of the freezer fan is within the abnormal power range of the freezer fan. And / or, the refrigerator determines a fault in the variable temperature air damper when the power difference of the variable temperature air damper is within the abnormal power range of the variable temperature air damper. And / or, the refrigerator determines a fault in the sterilization module when the power difference of the sterilization module is within the abnormal power range of the sterilization module. And / or, the refrigerator determines a fault in the compressor when the power difference of the compressor is within the abnormal power range of the compressor.

[0096] Specifically, the value range of the abnormal power interval of the refrigerated door body lamp is [10W, 25W]. The value range of the abnormal power interval of the refrigerated lighting lamp is [3W, 7W]. The value range of the abnormal power interval of the freezing defrosting heating wire is [160W, 220W]. The value range of the abnormal power interval of the refrigerated defrosting heating wire is [15W, 35W]. The value range of the abnormal power interval of the vertical beam heating wire is [15W, 25W]. The value range of the abnormal power interval of the electromagnetic valve is [6W, 13W]. The value range of the abnormal power interval of the cooling fan is [3W, 7W]. The value range of the abnormal power interval of the refrigerated fan is [4W, 9W]. The value range of the abnormal power interval of the freezing fan is [3W, 9W]. The value range of the abnormal power interval of the variable temperature air damper is [3W, 8W]. The value range of the abnormal power interval of the sterilization module is [3W, 12W]. The value range of the abnormal power interval of the compressor is [20W, 150W].

[0097] In this way, if the difference between the load power value and the set load power value is within the corresponding abnormal load power interval, it is determined that the load to be detected is abnormal. When the refrigerator fails, it enables after-sales maintenance personnel to quickly, accurately, and comprehensively locate the cause of the refrigerator failure, improving the work efficiency of after-sales maintenance personnel and the experience of refrigerator users.

[0098] Optionally, before the refrigerator determines the corresponding load to be detected based on the fault status information of the refrigerator sensors and the abnormal operation status of the compressor, it further includes: the refrigerator controls the compressor to start through a PWM square wave signal. Detect the abnormal operation status of the compressor.

[0099] In this way, first control the compressor to start, then detect the abnormal operation status of the compressor, and then proceed with the fault status information of other refrigerator sensors. Since the abnormal operation of the compressor may affect the detection of the fault status information of other refrigerator sensors and lead to inaccuracies, and performing the detection of the abnormal operation status of the compressor first is beneficial for more quickly checking whether it is a compressor fault. When the compressor is operating normally, then perform the detection of the fault status information of other refrigerator sensors, which is beneficial for making the detection results of the fault status information of the refrigerator sensors more accurate. When the refrigerator fails, it enables after-sales maintenance personnel to quickly, accurately, and comprehensively locate the cause of the refrigerator failure, improving the work efficiency of after-sales maintenance personnel and the experience of refrigerator users.

[0100] Optionally, after the abnormal operation status of the compressor is normal and before determining the corresponding load to be detected based on the fault status information of the refrigerator sensors, it further includes: the refrigerator detects the fault status information of the refrigerator sensors.

[0101] In this way, first control the compressor to start, then detect the abnormal operation state of the compressor, and then obtain the fault state information of other refrigerator sensors. Since the abnormal operation of the compressor may affect the detection accuracy of the fault state information of other refrigerator sensors, and detecting the abnormal operation state of the compressor first is beneficial to quickly identify whether it is a compressor fault. When the compressor is operating normally, detecting the fault state information of other refrigerator sensors is beneficial to making the detection result of the fault state information of the refrigerator sensors more accurate. When a refrigerator fails, it enables after-sales maintenance personnel to quickly, accurately, and comprehensively locate the cause of the refrigerator fault, improving the work efficiency of after-sales maintenance personnel and the experience of refrigerator users.

[0102] Combined with Figure 2 As shown, the embodiments of the present disclosure provide another method for refrigerator fault detection, including:

[0103] S201, the refrigerator controls the compressor to start through a PWM square wave signal.

[0104] S202, the refrigerator detects the abnormal operation state of the compressor.

[0105] S203, the refrigerator determines the corresponding load to be detected according to the fault state information of the refrigerator sensors and the abnormal operation state of the compressor.

[0106] S204, the refrigerator determines the refrigerator fault type according to the load power value of the load to be detected and the refrigerator reference power value.

[0107] Among them, the number of loads to be detected is single or multiple.

[0108] By using the method for refrigerator fault detection provided by the embodiments of the present disclosure, when a refrigerator fails, first control the compressor to start, then detect the abnormal operation state of the compressor, and then detect the fault state information of other refrigerator sensors. Since the abnormal operation of the compressor may affect the detection of the fault state information of other refrigerator sensors and lead to inaccuracy, and detecting the abnormal operation state of the compressor first is conducive to more quickly checking whether it is a compressor fault. When the compressor is operating normally, detecting the fault state information of other refrigerator sensors is conducive to making the detection result of the fault state information of the refrigerator sensors more accurate. According to the fault state information of the refrigerator sensors and the abnormal operation state of the compressor, first determine the load to be detected. The load to be detected can be single or multiple. Thus, the loads that are not faulty and do not require power detection can be initially excluded to improve the fault troubleshooting efficiency. Then, according to the load power value of the load to be detected and the refrigerator reference power value, determine the refrigerator fault type, thereby further screening out the faulty loads to improve the fault troubleshooting efficiency. When the refrigerator fails, it enables after-sales maintenance personnel to quickly, accurately, and comprehensively locate the cause of the refrigerator fault, improving the work efficiency of after-sales maintenance personnel and the experience of refrigerator users.

[0109] Combined with Figure 3 As shown, the embodiments of the present disclosure provide another method for refrigerator fault detection, including:

[0110] S301, the refrigerator controls the compressor to start through a PWM square wave signal.

[0111] S302, the refrigerator detects the abnormal operation state of the compressor.

[0112] S303, when the abnormal operation state of the compressor is normal, the refrigerator detects the fault state information of the refrigerator sensors.

[0113] S304, the refrigerator determines the corresponding load to be detected according to the fault state information of the refrigerator sensors.

[0114] S305, when the abnormal operation state of the compressor is abnormal, the refrigerator determines that the refrigerator fault type is compressor abnormality.

[0115] S306, the refrigerator determines the refrigerator fault type according to the load power value of the load to be detected and the refrigerator reference power value.

[0116] Wherein, the number of loads to be detected is single or multiple.

[0117] Using the method for refrigerator fault detection provided by the embodiments of the present disclosure, in the case of a refrigerator failure, first control the compressor to start, then detect the abnormal operation state of the compressor, and then detect the fault state information of other refrigerator sensors. Since the abnormal operation of the compressor may affect the detection of the fault state information of other refrigerator sensors and lead to inaccuracy, and detecting the abnormal operation state of the compressor first is beneficial to quickly find out whether it is a compressor fault. When the compressor is operating normally, then detecting the fault state information of other refrigerator sensors is beneficial to make the detection result of the fault state information of the refrigerator sensors more accurate. According to the fault state information of the refrigerator sensors and the abnormal operation state of the compressor, first determine the load to be detected. The load to be detected can be single or multiple. Thus, the loads that are not faulty and do not require power detection can be initially excluded to improve the fault troubleshooting efficiency. First determine the refrigerator reference power value, and then determine the load power value of the load to be detected according to the refrigerator reference power value. If the load power value is abnormal, the load to be detected is faulty. Thus, the faulty loads can be further screened out to improve the fault troubleshooting efficiency. Thus, the faulty loads can be further screened out to improve the fault troubleshooting efficiency. When the refrigerator fails, it enables after-sales maintenance personnel to quickly, accurately, and comprehensively locate the cause of the refrigerator failure, improving the work efficiency of after-sales maintenance personnel and the experience of refrigerator users.

[0118] Combined with Figure 4 As shown, the embodiments of the present disclosure provide another method for refrigerator fault detection, including:

[0119] S401. The refrigerator determines the corresponding load to be detected according to the fault state information of the refrigerator sensors and the abnormal operation state of the compressor.

[0120] S402. The refrigerator determines the refrigerator reference power value.

[0121]

[0122] S403. The refrigerator determines the load power value of the load to be detected according to the refrigerator reference power value.

[0122] S404. The refrigerator determines that the load to be detected with an abnormal load power value is faulty.

[0123] Among them, the number of loads to be detected is single or multiple.

[0124] Using the method for refrigerator fault detection provided by the embodiments of the present disclosure, when a refrigerator fails, first control the compressor to start, then detect the abnormal operation state of the compressor, and then detect the fault state information of other refrigerator sensors. Since the abnormal operation of the compressor may affect the detection of the fault state information of other refrigerator sensors and lead to inaccuracy, and detecting the abnormal operation state of the compressor first is conducive to more quickly finding out whether it is a compressor fault. When the compressor is operating normally, detecting the fault state information of other refrigerator sensors is conducive to making the detection result of the fault state information of the refrigerator sensors more accurate. According to the fault state information of the refrigerator sensors and the abnormal operation state of the compressor, first determine the load to be detected. The load to be detected can be single or multiple. Thus, the loads that are not faulty and do not require power detection can be preliminarily excluded to improve the fault troubleshooting efficiency. First determine the reference power value of the refrigerator, and then determine the load power value of the load to be detected according to the reference power value of the refrigerator. If the load power value is abnormal, the load to be detected is faulty. Thus, the faulty loads can be further screened out to improve the fault troubleshooting efficiency. Thus, the faulty loads can be further screened out to improve the fault troubleshooting efficiency. When the refrigerator fails, it enables the after-sales maintenance personnel to quickly, accurately and comprehensively locate the cause of the refrigerator fault, improving the work efficiency of the after-sales maintenance personnel and the experience of refrigerator users.

[0125] Combined with Figure 5 As shown, the embodiments of the present disclosure provide a device 200 for refrigerator fault detection, including a first determination module 501 and a second determination module 502. The first determination module 501 is configured to determine the corresponding load to be detected according to the fault state information of the refrigerator sensors and the abnormal operation state of the compressor. The second determination module 502 is configured to determine the refrigerator fault type according to the load power value of the load to be detected and the reference power value of the refrigerator; wherein, the number of loads to be detected is single or multiple.

[0126] Using the device 200 for refrigerator fault detection provided by the embodiments of the present disclosure, when a refrigerator fails, according to the fault state information of the refrigerator sensors and the abnormal operation state of the compressor, first determine the load to be detected. The load to be detected can be single or multiple. Thus, the loads that are not faulty and do not require power detection can be preliminarily excluded to improve the fault troubleshooting efficiency. Then determine the refrigerator fault type according to the load power value of the load to be detected and the reference power value of the refrigerator. Thus, the faulty loads can be further screened out to improve the fault troubleshooting efficiency. When the refrigerator fails, it enables the after-sales maintenance personnel to quickly, accurately and comprehensively locate the cause of the refrigerator fault, improving the work efficiency of the after-sales maintenance personnel and the experience of refrigerator users.

[0127] Combined with Figure 6As shown in the figure, an embodiment of the present disclosure provides a device 70 for refrigerator fault detection, including a processor 700 and a memory 701. Optionally, the device 70 may further include a communication interface 702 and a bus 703. Among them, the processor 700, the communication interface 702, and the memory 701 can complete mutual communication through the bus 703. The communication interface 702 can be used for information transmission. The processor 700 can call the logical instructions in the memory 701 to execute the method for refrigerator fault detection in the above embodiment.

[0128] In addition, when the logical instructions in the above-mentioned memory 701 are implemented in the form of a software functional unit and sold or used as an independent product, they can be stored in a computer-readable storage medium.

[0129] The memory 701, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as the program instructions / modules corresponding to the method in the embodiment of the present disclosure. The processor 700 executes functional applications and data processing by running the program instructions / modules stored in the memory 701, that is, implements the method for refrigerator fault detection in the above embodiment.

[0130] The memory 701 may include a program storage area and a data storage area. Among them, the program storage area can store an operating system and application programs required for at least one function; the data storage area can store data created according to the use of the terminal device, etc. In addition, the memory 701 may include a high-speed random access memory and may also include a non-volatile memory.

[0131] Combined with Figure 7 As shown in the figure, an embodiment of the present disclosure provides a refrigerator 100, including: a refrigerator body, and the above-mentioned device 200(70) for refrigerator fault detection. The device 200(70) for refrigerator fault detection is installed on the refrigerator body. The installation relationship described here is not limited to being placed inside the refrigerator body, but also includes installation connections with other components of the refrigerator 100, including but not limited to physical connections, electrical connections, or signal transmission connections, etc. Those skilled in the art can understand that the device 200(70) for refrigerator fault detection can be adapted to a feasible refrigerator body, and further implement other feasible embodiments.

[0132] An embodiment of the present disclosure provides a computer-readable storage medium storing computer-executable instructions, and the computer-executable instructions are set to execute the above-mentioned method for refrigerator fault detection.

[0133] The technical solution of the embodiments of the present disclosure can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes one or more instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in the embodiments of the present disclosure. The aforementioned storage medium may be a non-transitory storage medium, such as: a USB flash drive, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk, or an optical disc, and other media that can store program codes.

[0134] The above description and the drawings fully illustrate the embodiments of the present disclosure, enabling those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, process, and other changes. The embodiments only represent possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations can vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terms used in this application are only for describing the embodiments and are not used to limit the claims. As used in the description of the embodiments and the claims, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" are intended to also include the plural forms. Similarly, as used in this application, the term "and / or" refers to any and all possible combinations including one or more of the associated listed items. Additionally, when used in this application, the term "comprise" and its variants "comprises" and / or "comprising" etc. mean the presence of the stated features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or groupings of these. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of another identical element in the process, method, or device including the element. In this article, what each embodiment focuses on can be the differences from other embodiments, and the same or similar parts among the embodiments can be referred to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiments, the relevant parts can be referred to the description of the method part.

[0135] Those skilled in the art will realize that the units and algorithm steps of each example described in connection with the embodiments disclosed herein can be implemented in electronic hardware, or in a combination of computer software and electronic hardware. Whether these functions are executed in hardware or software can depend on the specific application and design constraints of the technical solution. The skilled person can use different methods for each specific application to implement the described functions, but such implementation should not be considered to exceed the scope of the embodiments of the present disclosure. The skilled person can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated herein.

[0136] In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units can be merely a logical function division, and there can be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Additionally, the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces. The indirect couplings or communication connections of devices or units can be in electrical, mechanical or other forms. The units described as separate components can be or can not be physically separated, and the components displayed as units can be or can not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to implement this embodiment. Additionally, in the embodiments of the present disclosure, the functional units can be integrated in one processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit.

[0137] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagram may represent a module, a segment of code, or a portion thereof that contains one or more executable instructions for implementing the specified logical function. In some alternative implementations, the functions noted in the blocks may occur in a different order than noted in the accompanying drawings. For example, two consecutive blocks may in fact be executed substantially in parallel, or they may sometimes be executed in the reverse order, depending on the functions involved. In the description corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks may also occur in a different order than disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps may in fact be executed substantially in parallel, or they may sometimes be executed in the reverse order, depending on the functions involved. Each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented by a dedicated hardware-based system that performs the specified functions or actions, or can be implemented by a combination of dedicated hardware and computer instructions.

Claims

1. A method for refrigerator fault detection, characterized in that, including: determine the corresponding load to be detected according to the fault status information of the refrigerator sensor and the abnormal operation status of the compressor; determine the refrigerator fault type according to the load power value of the load to be detected and the refrigerator reference power value; wherein, the number of loads to be detected is single or multiple.

2. The method according to claim 1, wherein Determining the corresponding load to be detected according to the fault status information of the refrigerator sensor and the abnormal operation status of the compressor includes: when the abnormal operation status of the compressor is normal, determine the corresponding load to be detected according to the fault status information of the refrigerator sensor; when the abnormal operation status of the compressor is abnormal, determine that the refrigerator fault type is compressor abnormality.

3. The method according to claim 2, wherein Before determining the corresponding load to be detected according to the fault status information of the refrigerator sensor after the abnormal operation status of the compressor is normal, it further includes: detect the fault status information of the refrigerator sensor.

4. The method according to claim 1, wherein Determining the refrigerator fault type according to the load power value of the load to be detected and the refrigerator reference power value includes: determine the refrigerator reference power value; determine the load power value of the load to be detected according to the refrigerator reference power value; determine the fault of the load to be detected with abnormal load power value.

5. The method according to claim 4, wherein Determining the refrigerator reference power value includes: when all the loads of the refrigerator are turned off for the first duration for the jth time, detect the standby power of the refrigerator at the current moment as the jth refrigerator standby power value; remove the maximum and minimum values of the M refrigerator standby power values and then calculate the average value to obtain the refrigerator reference power value; wherein, j = 1, 2,..., M; M is the total number of times of turning off all the loads of the refrigerator.

6. The method according to any one of claims 1 to 4, characterized in that, Before determining the corresponding load to be detected according to the fault status information of the refrigerator sensor, it further includes: control the compressor to start through a pulse width modulation (PWM) square wave signal; detect the abnormal operation status of the compressor.

7. A device for refrigerator fault detection, characterized in that, including: a first determination module configured to determine the corresponding load to be detected according to the fault status information of the refrigerator sensor and the abnormal operation status of the compressor; a second determination module configured to determine the refrigerator fault type according to the load power value of the load to be detected and the refrigerator reference power value; wherein, the number of loads to be detected is single or multiple.

8. A device for refrigerator fault detection, comprising a processor and a memory storing program instructions, characterized in that, The processor is configured to execute the method for refrigerator fault detection according to any one of claims 1 to 6 when running the program instructions.

9. A refrigerator, characterized in that, including: a refrigerator body; the device for refrigerator fault detection according to claim 7 or 8, installed on the refrigerator body.

10. A computer-readable storage medium storing program instructions, characterized in that, When the program instructions are running, they are used to cause the computer to execute the method for refrigerator fault detection according to any one of claims 1 to 6.

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