Refrigerator air door control method and device, refrigerator and storage medium
By obtaining the position characterization parameters during the rotation of the refrigerator damper, judging the damper status and controlling it to stop rotating, the noise problem caused by excessive driving of the damper is solved, and the user experience and control accuracy are improved.
Patent Information
- Application Number
- CN202411459879.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-18
- Publication Date
- 2024-12-10
AI Technical Summary
The refrigerator damper is prone to overdrive during opening or closing, resulting in an increase in noise and affecting the user experience.
By obtaining the position characterization parameters during the valve rotation, such as sound signals, vibration frequency and pressure values, the operating state of the valve is judged, and the damper is stopped when the damper is fully opened or closed, avoiding excessive driving.
It effectively reduces noise during opening or closing of the damper, improves the user experience, and ensures that the damper reaches the target position accurately.
Smart Images
Figure CN119103790A_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of refrigeration equipment, and in particular, relates to a control method and a control device for a refrigerator damper, a refrigerator, and a storage medium. Background Art
[0002] In the related art, the damper of the refrigerator is driven by a control system during the opening or closing process. In order to ensure the accuracy of the damper resetting, the control system usually sends a full-range drive signal to the damper to drive the damper to rotate a complete stroke. In this process, it is easy to cause the damper to be overdriven, that is, the damper continues to rotate when it rotates to the predetermined position, generating a lot of noise, affecting the user experience. Summary of the invention
[0003] The embodiments of the present application provide a control method and a control device for a refrigerator damper, a refrigerator, and a storage medium to solve the problem that a damper of an existing refrigerator generates a large noise during operation.
[0004] In a first aspect, an embodiment of the present application provides a method for controlling a refrigerator damper, comprising:
[0005] Obtaining position characterization parameters during the damper rotation process;
[0006] Based on the position characterization parameter, determining the operating state of the damper;
[0007] When the operating state is an intermediate state, the damper is controlled to continue rotating; when the operating state is a fully open state or a fully closed state, the damper is controlled to stop rotating.
[0008] In some embodiments of the present application, the position characterization parameter includes a sound signal during the rotation of the damper, and judging the operating state of the damper based on the position characterization parameter includes:
[0009] Based on the sound signal, determining a sound type corresponding to the sound signal;
[0010] Based on the sound type, an operating status of the damper is determined.
[0011] In some embodiments of the present application, before determining the sound type corresponding to the sound signal, the method further includes:
[0012] The sound signal is amplified by a low noise amplifier, background noise in the sound signal is removed based on a bandpass filter, and then the sound signal is sampled based on a preset sampling frequency.
[0013] In some embodiments of the present application, determining the sound type corresponding to the sound signal based on the sound signal includes:
[0014] During the rotation and opening process of the damper, when the frequency corresponding to the sound signal is greater than or equal to the first preset frequency, the sound type is determined to be the first sound type; when the frequency corresponding to the sound signal is less than the first preset frequency, the sound type is determined to be the second sound type;
[0015] During the rotation and closing process of the damper, when the frequency corresponding to the sound signal is greater than or equal to the second preset frequency, the sound type is determined to be the third sound type; when the frequency corresponding to the sound signal is less than the second preset frequency, the sound type is determined to be the second sound type;
[0016] Among them, when it is determined that the sound type is the first sound type, the damper is determined to be in the fully open state; when it is determined that the sound type is the second sound type, the damper is determined to be in the open state; when it is determined that the sound type is the third sound type, the damper is determined to be in the fully closed state.
[0017] In some embodiments of the present application, the position characterization parameter includes the vibration frequency of the damper during rotation, and determining the operating state of the damper based on the position characterization parameter includes:
[0018] When the vibration frequency is greater than or equal to a preset vibration frequency, determining that the damper is in the fully open state or the fully closed state;
[0019] When the vibration frequency is less than the preset vibration frequency, it is determined that the damper is in the intermediate state.
[0020] In some embodiments of the present application, the position characterization parameter includes a pressure value between the damper and the door frame, and determining the operating state of the damper based on the position characterization parameter includes:
[0021] During the rotation and opening process of the damper, when the pressure value is greater than or equal to a first pressure threshold, it is determined that the damper is in the fully open state; when the pressure value is less than the first pressure threshold, it is determined that the damper is in the open state;
[0022] During the rotation and closing process of the damper, when the pressure value is greater than or equal to the second pressure threshold, the damper is determined to be in the fully closed state; when the pressure value is less than the second pressure threshold, the damper is determined to be in the open state.
[0023] In some embodiments of the present application, the method further includes:
[0024] Calculating the number of rotation steps of the driving motor of the damper during the switching process between the fully open state and the fully closed state;
[0025] Based on the number of rotation steps, the drive motor is controlled to operate according to the number of rotation steps during the next door opening or closing process.
[0026] In a second aspect, an embodiment of the present application further provides a control device for a refrigerator damper, comprising:
[0027] An acquisition module, used for acquiring position characterization parameters during the rotation of the damper;
[0028] A judgment module, used for judging the operating state of the damper based on the position characterization parameter;
[0029] The control module is used to control the damper to continue rotating when the operating state is an intermediate state; and to control the damper to stop rotating when the operating state is a fully open state or a fully closed state.
[0030] In a third aspect, an embodiment of the present application further provides a refrigerator, comprising:
[0031] Air duct;
[0032] A damper rotatably mounted on the air duct;
[0033] A sensor for detecting position characterization parameters during the rotation of the damper;
[0034] A controller is electrically connected to the damper and the sensor to execute the refrigerator damper control method described in the above embodiment.
[0035] In a fourth aspect, an embodiment of the present application further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the refrigerator damper control method as described in the above embodiment.
[0036] The control method of the refrigerator damper provided in the embodiment of the present application includes obtaining position characterization parameters during the damper rotation process; judging the operating state of the damper based on the position characterization parameters; controlling the damper to continue rotating when the operating state is an intermediate state; and controlling the damper to stop rotating when the operating state is a fully open state or a fully closed state. By obtaining the position characterization parameters during the damper rotation process, it is determined whether the damper is in an intermediate state, a fully open state, or a fully closed state. After detecting that the damper is in a fully open state or a fully closed state, the damper is controlled to stop rotating, which can effectively avoid overdriving during the opening or closing process of the damper, reduce noise, and improve the user experience.
[0037] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.
[0039] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings. In the following description, the same reference numerals represent the same parts.
[0040] Figure 1 Schematic diagram of the process of the refrigerator control method provided in the embodiment of the present application Figure 1 .
[0041] Figure 2 Schematic diagram of the process of the refrigerator control method provided in the embodiment of the present application Figure 2 .
[0042] Figure 3 Schematic diagram of the process of the refrigerator control method provided in the embodiment of the present application Figure 3 .
[0043] Figure 4 A schematic diagram of the structure of a refrigerator control device provided in an embodiment of the present application.
[0044] Figure 5 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION
[0045] The following is a further detailed description of the implementation of the present application in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application but cannot be used to limit the scope of the present application.
[0046] In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.
[0047] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.
[0048] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0049] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.
[0050] In the related art, when the refrigerator damper is opened or closed, the motor rotates a fixed number of steps to drive the damper to rotate to open or close the damper. However, when the damper is not in the reference position before driving the damper to rotate, it is easy for the damper to be still controlled by excess drive signals after moving to fully open or fully closed, causing the damper to continue to collide with the door frame or the drive gear to get stuck and continue to rotate, causing the refrigerator damper to be overdriven and produce abnormal noise, affecting the user's normal use.
[0051] The present application provides a refrigerator damper control method, a control device, a refrigerator and a storage medium to solve the problem that the existing refrigerator damper generates a lot of noise during operation. Figure 1-5 Provide explanation.
[0052] The refrigerator damper control method provided in the embodiment of the present application can be applied to a refrigerator, which can be a single-door refrigerator, a double-door refrigerator or a three-door refrigerator. Figure 1 , Figure 1 A flow chart of a refrigerator damper control method provided in an embodiment of the present application.
[0053] refer to Figure 1 As shown, the control method of the refrigerator damper may include:
[0054] S101: Acquire position characterization parameters during the damper rotation process.
[0055] It can be understood that, in this embodiment, the position characterization parameter is a parameter used to describe the rotation position of the damper in the refrigerator, which can be detected by a corresponding sensor.
[0056] Exemplarily, the position characterization parameters may include at least one of a sound signal during the rotation of the damper, a vibration frequency during the rotation of the damper, and a pressure value between the damper and the door frame. By detecting the sound signal, the vibration frequency or the pressure value, it can be determined whether the damper is in an intermediate state, a fully open state or a fully closed state.
[0057] S102: Determine the operating state of the damper based on the position characterization parameter.
[0058] In an optional embodiment, the position characterization parameters include sound signals during the rotation of the damper, such as frequency, amplitude, duration and other characteristics of the sound. Based on the position characterization parameters, judging the operating status of the damper includes: based on the sound signal, determining the sound type corresponding to the sound signal; based on the sound type, determining the operating status of the damper.
[0059] When an existing single damper of a refrigerator is in normal use, the damper mainly emits a low-pitched buzzing sound during the opening or closing process. When the damper continues to rotate after being fully opened or fully closed, the damper will emit a loud clicking sound. In this embodiment, after detecting the sound signal during the rotation of the damper, the sound signal is analyzed to determine whether the corresponding sound type is a clicking sound or a buzzing sound, thereby determining whether the damper is in an intermediate state, a fully open state, or a fully closed state.
[0060] Optionally, in this embodiment, a highly sensitive MEMS microphone is selected as a sound sensor to ensure that various sound signals emitted by the damper during its rotation can be accurately captured, and the sound sensors are arranged at the upper, lower, left and right corners of the refrigerator damper, which can ensure that the sound signals of the damper are captured from multiple angles, thereby improving the comprehensiveness and accuracy of sound collection. Combined with corresponding sound signal processing and analysis algorithms, accurate judgment of the operating status of the refrigerator damper can be achieved.
[0061] In an optional embodiment, before determining the sound type corresponding to the sound signal, the control method also includes: amplifying the sound signal through a low-noise amplifier, removing background noise in the sound signal based on a bandpass filter, and then sampling the sound signal based on a preset sampling frequency.
[0062] In this embodiment, the low noise amplifier is used to amplify the weak sound signal collected by the MEMS microphone to increase the signal amplitude and signal-to-noise ratio. The low noise amplifier has a low noise characteristic and can reduce the additional noise introduced during the amplification process, thereby maintaining the original characteristics of the sound signal.
[0063] The bandpass filter is used to remove background noise and interference signals in the sound signal, which can improve the purity and signal-to-noise ratio of the sound signal, provide more favorable conditions for subsequent sound feature extraction and classification, and then sample based on the preset frequency, for example, the sampling frequency is 44.1kHz.
[0064] In an optional embodiment, based on the sound signal, determining the sound type corresponding to the sound signal includes: during the rotation and opening process of the damper, when the frequency corresponding to the sound signal is greater than or equal to the first preset frequency, determining the sound type to be the first sound type; when the frequency corresponding to the sound signal is less than the first preset frequency, determining the sound type to be the second sound type; during the rotation and closing process of the damper, when the frequency corresponding to the sound signal is greater than or equal to the second preset frequency, determining the sound type to be the third sound type; when the frequency corresponding to the sound signal is less than the second preset frequency, determining the sound type to be the second sound type; wherein, when the sound type is determined to be the first sound type, it is determined that the damper is in a fully open state; when the sound type is determined to be the second sound type, it is determined that the damper is in an open state; when the sound type is determined to be the third sound type, it is determined that the damper is in a fully closed state.
[0065] It is understandable that in this embodiment, the buzzing sound usually appears as a stable low-frequency signal, while the rattling sound appears as a high-frequency impact signal. By analyzing the frequency of the sound during the rotation of the damper, it can be determined whether the sound is a rattling sound or a buzzing sound.
[0066] Specifically, when the damper rotates to open, if the frequency corresponding to the sound signal is greater than or equal to the first preset frequency, the sound type is determined to be the first sound type (clicking sound), indicating that the damper is in a fully open state; if the frequency corresponding to the sound signal is less than the first preset frequency, the sound type is determined to be the second sound type (buzzing sound), indicating that the damper is in an intermediate state (not fully open).
[0067] When the damper rotates to close, if the frequency corresponding to the sound signal is greater than or equal to the second preset frequency, the sound type is determined to be the third sound type (clicking sound), indicating that the damper is in a fully closed state. If the frequency corresponding to the sound signal is less than the second preset frequency, the sound type is also determined to be the second sound type (buzzing sound), indicating that the damper is in an intermediate state.
[0068] In some embodiments, the first preset frequency is equal to the second preset frequency; in other embodiments, when the damper is just rotated to a fully open state and just rotated to a fully closed state, the sound frequencies in the two states are also different due to factors such as mechanical motion characteristics, material friction, and air flow. In order to improve the accuracy of judging the operating state of the damper, in this embodiment, it is first determined whether the damper is in the process of rotating to open or rotating to close, and then compared with the preset frequency threshold (i.e., the first preset frequency and the second preset frequency) to determine the sound type (i.e., the state of the damper), so that the judgment is more comprehensive and accurate, which is conducive to reducing noise generation.
[0069] When the existing single damper of a refrigerator is in normal use, the damper mainly emits low-frequency vibrations (continuous, smooth, and without obvious rhythmic changes) during the opening or closing process. When the damper continues to rotate after being fully opened or fully closed, due to friction, collision or poor operation between mechanical parts, the damper will produce high-frequency, discontinuous, rhythmic vibrations.
[0070] S103: When the operating state is an intermediate state, the damper is controlled to continue rotating; when the operating state is a fully open state or a fully closed state, the damper is controlled to stop rotating.
[0071] In this embodiment, the control method of the refrigerator damper includes obtaining position characterization parameters during the damper rotation process; judging the operating state of the damper based on the position characterization parameters; controlling the damper to continue rotating when the operating state is an intermediate state; and controlling the damper to stop rotating when the operating state is a fully open state or a fully closed state. By obtaining the position characterization parameters during the damper rotation process, it is determined whether the damper is in an intermediate state, a fully open state, or a fully closed state. After detecting that the damper is in a fully open state or a fully closed state, the damper is controlled to stop rotating, which can effectively avoid overdriving during the opening or closing process of the damper, reduce noise, and improve the user experience.
[0072] In an alternative embodiment, reference Figure 2 As shown, the position characterization parameter includes the vibration frequency during the rotation of the damper. Based on the position characterization parameter, determining the operating state of the damper includes:
[0073] S201: When the vibration frequency is greater than or equal to a preset vibration frequency, determine whether the damper is in a fully open state or a fully closed state.
[0074] S202: When the vibration frequency is less than a preset vibration frequency, determine that the damper is in an intermediate state.
[0075] In this embodiment, the vibration frequency of the damper during rotation is detected by a vibration sensor. The vibration sensor can be set at the upper, lower, left and right corners of the refrigerator damper. When the vibration frequency is greater than or equal to the preset vibration frequency, it means that the damper is vibrating more strongly at this time, indicating that the damper has moved to a fully open position or a fully closed position. When the damper continues to rotate, it will collide with other parts or produce greater vibrations due to gear jamming. The damper is already in a fully open state or a fully closed state. Otherwise, it means that the damper is still in an intermediate state.
[0076] In an optional embodiment, the vibration frequency when the damper is just rotated to a fully open state may be different from that when it is just rotated to a fully closed state. Compared with the judgment scheme type based on sound signals, it is possible to first determine whether the damper is in the opening process or the closing process, and then compare the vibration frequency with the corresponding preset vibration frequency, so that the judgment is more comprehensive and accurate, which is conducive to reducing noise generation.
[0077] In an optional embodiment, the position characterization parameters include pressure values between the damper and the door frame. A pressure sensor is provided at a target position on the door frame of the damper (on the contact surface with the door frame when the damper is fully open or fully closed) for collecting the pressure applied by the damper to the pressure sensor on the door frame. When the damper is rotated to a fully open state or a fully closed state, the damper just contacts the pressure sensors on the door frame. If the damper continues to rotate, pressure will continue to be generated on the pressure sensor, the pressure value will increase, and the noise generated by the damper will also increase.
[0078] Specifically, refer to Figure 3 As shown, based on the position characterization parameters, determining the operating state of the damper includes:
[0079] S301: During the rotation and opening process of the damper, when the pressure value is greater than or equal to the first pressure threshold, it is determined that the damper is in a fully open state; when the pressure value is less than the first pressure threshold, it is determined that the damper is in an open state.
[0080] S302: During the rotation and closing process of the damper, when the pressure value is greater than or equal to the second pressure threshold, it is determined that the damper is in a fully closed state; when the pressure value is less than the second pressure threshold, it is determined that the damper is in an open state.
[0081] In this embodiment, the first pressure threshold is determined based on the pressure characteristics between the damper and the door frame in a fully open state, and the second pressure threshold is determined based on the pressure characteristics between the damper and the door frame in a fully closed state. Since the pressure values of the damper in the fully open or fully closed state may be different, the first pressure threshold is not equal to the second pressure threshold, which can more accurately determine whether the damper has just moved to a fully open state or a fully closed state, thereby improving the accuracy of the judgment and reducing noise generation.
[0082] For example, in a specific embodiment, it is found through experimental verification that when the pressure value of the pressure sensor at the target position of the damper on the door frame is in the range of 3-5, the damper is just completely closed and no loud noise is generated. If the pressure is greater than 5, a clicking sound and loud noise will be generated.
[0083] In an optional embodiment, the control method further includes: calculating the number of rotation steps of the drive motor during the switching process of the damper between a fully open state and a fully closed state; based on the number of rotation steps, controlling the drive motor to operate according to the number of rotation steps during the next opening or closing process.
[0084] In this embodiment, by recording the actual number of rotation steps of the driving motor when the damper is fully opened and closed, the number of rotation steps between these two states can be obtained, which is used as a reference for the operation of the driving motor in the subsequent control process. Based on the number of rotation steps of the driving motor, the driving motor is controlled to operate according to the predetermined number of rotation steps during the next opening or closing process, ensuring that the damper can accurately reach the target position.
[0085] By designing a closed-loop feedback adjustment mechanism, it can be ensured that the damper can move to the predetermined opening position (fully open state or fully closed state) during the next opening or closing process, thereby improving the accuracy of damper control and achieving precise control of the damper position.
[0086] In a specific embodiment, a method for controlling a refrigerator damper includes: using a sound sensor to collect the sound made by the damper during the opening and closing process, the damper starts and makes a buzzing sound, recording the sound characteristics of the damper reaching a predetermined position and the number of rotation steps of the motor (num1); after reaching the predetermined position and the buzzing sound stops, if the damper continues to rotate to produce a clicking sound, recording the rotation angle of the refrigerator damper and the number of rotation steps of the motor at this time (num2), judging the sound type through sound recognition technology, and feedback-adjusting the rotation angle of the refrigerator damper and the number of rotation steps of the motor according to different types of dampers and their sound characteristics, so that the damper just reaches the predetermined position, thereby reducing unnecessary noise generation.
[0087] After acquiring the sound signal, a frequency domain analysis algorithm based on Fourier transform can be used to distinguish between buzzing and clicking. Buzzing usually appears as a stable low-frequency signal, while clicking appears as a high-frequency impact signal. The algorithm can identify the spectral characteristics of these two sounds and classify them.
[0088] Optionally, an ARM Cortex-M0 microcontroller is used as the core of the control unit, and its control logic includes: receiving data from the sound sensor; calling the sound feature recognition algorithm for sound classification; calculating the required damper rotation angle and motor rotation steps according to the sound type and the current state of the damper; sending instructions to the motor drive module to adjust the damper position. The driving process selects a stepper motor as the driving device of the damper, equipped with a corresponding driver, and the motor drive module can accurately control the motor speed and steps according to the instructions of the control unit, and can realize a closed-loop control system, monitor the sound of the damper switch process in real time through the sound sensor, and feed back the data to the control unit. The control unit adjusts the control parameters according to the feedback information to achieve accurate control of the damper position.
[0089] The detection scheme based on vibration frequency and pressure value can refer to the detection scheme based on sound signal, which will not be described in detail in this embodiment.
[0090] In an optional implementation, two or three parameters among the sound signal, the vibration frequency, and the pressure value may be combined to determine the operating state of the damper, thereby improving the accuracy of determining the movement position of the damper.
[0091] Second, refer to Figure 4 As shown, the embodiment of the present application also provides a control device for a refrigerator damper, comprising:
[0092] An acquisition module 401 is used to acquire position characterization parameters during the rotation of the damper;
[0093] A judgment module 402, used to judge the operating state of the damper based on the position characterization parameter;
[0094] The control module 403 is used to control the damper to continue rotating when the operating state is an intermediate state; and to control the damper to stop rotating when the operating state is a fully open state or a fully closed state.
[0095] In a third aspect, an embodiment of the present application also provides a refrigerator, comprising an air duct, an air door, a sensor and a controller. The air door can be rotatably installed in the air duct, and the sensor is used to detect position characterization parameters during the rotation of the air door; the controller is electrically connected to the air door and the sensor to execute the control method of the refrigerator air door of the above embodiment.
[0096] Figure 5 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 5 As shown, the electronic device may include: a processor 501 (processor), a communication interface 502 (Communications Interface), a memory 503 (memory) and a bus 504, wherein the processor 501, the communication interface 502, and the memory 503 communicate with each other through the communication bus 504. The processor 501 may call the logic instructions in the memory 503 to execute the steps of the refrigerator air door control method.
[0097] In addition, the logic instructions in the above-mentioned memory 503 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present application can be embodied in the form of a software product, which is stored in a storage medium and includes a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory 503 (ROM, Read-Only Memory), a random access memory 503 (RAM, Random Access Memory), a disk or an optical disk, and other media that can store program codes.
[0098] On the other hand, an embodiment of the present application also provides a computer program product, which includes a computer program stored on a computer-readable storage medium, and the computer program includes program instructions. When the program instructions are executed by a computer, the computer can execute the refrigerator damper control method provided by the above-mentioned method embodiments.
[0099] On the other hand, an embodiment of the present application further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by the processor 501, is implemented to execute the refrigerator damper control method provided in the above-mentioned embodiments.
[0100] Computer-readable storage media can be any available media or data storage devices that can be accessed by the processor, including but not limited to magnetic storage (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical storage (such as CD, DVD, BD, HVD, etc.), and semiconductor storage (such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drive (SSD)), etc.
[0101] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, i.e., they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Those of ordinary skill in the art may understand and implement it without creative effort.
[0102] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods of each embodiment or some parts of the embodiment.
[0103] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.
[0104] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. A method for controlling a refrigerator damper, characterized in that: include: Obtaining position characterization parameters during the damper rotation process; Based on the position characterization parameter, determining the operating state of the damper; When the operating state is an intermediate state, the damper is controlled to continue rotating; when the operating state is a fully open state or a fully closed state, the damper is controlled to stop rotating.
2. The refrigerator damper control method according to claim 1, characterized in that: The position characterization parameter includes a sound signal during the rotation of the damper, and judging the operating state of the damper based on the position characterization parameter includes: Based on the sound signal, determining a sound type corresponding to the sound signal; Based on the sound type, an operating status of the damper is determined.
3. The refrigerator damper control method according to claim 2, characterized in that: Before determining the sound type corresponding to the sound signal, the method further includes: The sound signal is amplified by a low noise amplifier, background noise in the sound signal is removed based on a bandpass filter, and then the sound signal is sampled based on a preset sampling frequency.
4. The refrigerator damper control method according to claim 2, characterized in that: The determining, based on the sound signal, a sound type corresponding to the sound signal includes: During the rotation and opening process of the damper, when the frequency corresponding to the sound signal is greater than or equal to the first preset frequency, the sound type is determined to be the first sound type; when the frequency corresponding to the sound signal is less than the first preset frequency, the sound type is determined to be the second sound type; During the rotation and closing process of the damper, when the frequency corresponding to the sound signal is greater than or equal to the second preset frequency, the sound type is determined to be the third sound type; when the frequency corresponding to the sound signal is less than the second preset frequency, the sound type is determined to be the second sound type; Among them, when it is determined that the sound type is the first sound type, the damper is determined to be in the fully open state; when it is determined that the sound type is the second sound type, the damper is determined to be in the open state; when it is determined that the sound type is the third sound type, the damper is determined to be in the fully closed state.
5. The refrigerator damper control method according to claim 1, characterized in that: The position characterization parameter includes a vibration frequency of the damper during rotation, and determining the operating state of the damper based on the position characterization parameter includes: When the vibration frequency is greater than or equal to a preset vibration frequency, determining that the damper is in the fully open state or the fully closed state; When the vibration frequency is less than the preset vibration frequency, it is determined that the damper is in the intermediate state.
6. The refrigerator damper control method according to claim 1, characterized in that: The position characterization parameter includes a pressure value between the damper and the door frame, and determining the operating state of the damper based on the position characterization parameter includes: During the rotation and opening process of the damper, when the pressure value is greater than or equal to a first pressure threshold, it is determined that the damper is in the fully open state; when the pressure value is less than the first pressure threshold, it is determined that the damper is in the open state; During the rotation and closing process of the damper, when the pressure value is greater than or equal to the second pressure threshold, the damper is determined to be in the fully closed state; when the pressure value is less than the second pressure threshold, the damper is determined to be in the open state.
7. The refrigerator damper control method according to any one of claims 1 to 6, characterized in that: The method further comprises: Calculating the number of rotation steps of the driving motor of the damper during the switching process between the fully open state and the fully closed state; Based on the number of rotation steps, the drive motor is controlled to operate according to the number of rotation steps during the next door opening or closing process.
8. A control device for a refrigerator damper, characterized in that: include: An acquisition module, used for acquiring position characterization parameters during the rotation of the damper; A judgment module, used for judging the operating state of the damper based on the position characterization parameter; The control module is used to control the damper to continue rotating when the operating state is an intermediate state; and to control the damper to stop rotating when the operating state is a fully open state or a fully closed state.
9. A refrigerator, characterized in that: include: Air duct; A damper rotatably mounted on the air duct; A sensor for detecting position characterization parameters during the rotation of the damper; A controller is electrically connected to the damper and the sensor to execute the refrigerator damper control method according to any one of claims 1 to 7.
10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the refrigerator damper control method as described in any one of claims 1 to 7 are implemented.