Household appliance, control method thereof, and storage medium

Abstract

The present invention discloses a control method for household appliances, comprising receiving a sound signal collected by the sound collection device; when it is detected that the difference between at least one peak volume value of the sound signal and the noise volume value in the sound signal is greater than or equal to a first threshold, controlling the household appliance to perform a corresponding preset operation. The present invention also discloses a household appliance and a storage medium. The present invention determines whether to control the household appliance by identifying the size of the peak volume value in the sound signal. The peak volume value is easy to identify, and the identification accuracy is high, and the identification method is convenient and fast, thereby achieving the purpose of convenient and fast control of the household appliance, especially the on and off control of the household appliance, which has a faster response speed than other controls.

Description

Technical Field

[0001] The present invention relates to the field of household appliances, and in particular to a household appliance, a control method thereof, and a storage medium. Background Art

[0002] As life and technology advance, the ways to turn home appliances on and off are becoming increasingly diverse, from the original remote control to today's mobile phone Wi-Fi control and voice command control. Both remote and mobile phone control methods require external control. If the remote control is not nearby or the corresponding app is not installed on the phone, you need to find the remote control or install the app on the phone to control the home appliance, making it inconvenient to control the home appliance. Voice command control, on the other hand, has problems such as inaccurate voice command recognition and slow response of the home appliance. Therefore, it can be seen that controlling home appliances today is not convenient and fast enough. Summary of the Invention

[0003] The main purpose of the present invention is to provide a household appliance and a control method and storage medium thereof, aiming to solve the inconvenient and inefficient technical problem of household appliances.

[0004] To achieve the above object, the present invention provides a control method for a household appliance, wherein the household appliance is provided with a sound collection device, and the control method for the household appliance comprises the following steps:

[0005] receiving a sound signal collected by the sound collection device;

[0006] When it is detected that the difference between at least one peak volume value of the sound signal and the noise volume value in the sound signal is greater than or equal to a first threshold, the household appliance is controlled to perform a corresponding preset operation.

[0007] Optionally, when it is detected that the difference between at least one peak volume value of the sound signal and a noise volume value in the sound signal is greater than or equal to a first threshold, the step of controlling the household appliance to perform a corresponding preset operation includes:

[0008] When it is detected that the difference between a first peak volume value of the sound signal and a noise volume value in the sound signal is greater than or equal to the first threshold, a second peak volume value is detected, and a time interval between a time point at which the second peak volume value is collected and a time point at which the first peak volume value is collected is less than a preset time interval;

[0009] When the difference between the second peak volume value and the noise volume value is greater than or equal to the first threshold, the household appliance is controlled to perform a corresponding preset operation.

[0010] Optionally, when it is detected that the difference between at least one peak volume value of the sound signal and the noise volume value in the sound signal is greater than or equal to a first threshold, the step of controlling the household appliance to perform a corresponding preset operation further includes:

[0011] When the difference between the second peak volume value and the noise volume value is smaller than the first threshold, the household appliance does not respond.

[0012] Optionally, after the step of detecting the second peak volume value, the method further includes:

[0013] When the difference between the second peak volume value and the noise volume value is greater than or equal to the first threshold, obtaining the difference between the first peak volume value and the second peak volume value;

[0014] When the difference between the first peak volume value and the second peak volume value is less than or equal to a second threshold, the step of controlling the household appliance to perform a corresponding preset operation is performed.

[0015] Optionally, after the step of receiving the sound signal collected by the sound collection device, the method for controlling the household appliance further includes:

[0016] When the peak volume value of the sound signal is detected, obtaining the sum of all noise volume values ​​within a preset time period before the peak volume value is detected;

[0017] Calculate the average noise volume value of the preset time period according to the sum of all the noise volume values;

[0018] The average noise volume value is used as the noise volume value in the sound signal.

[0019] Optionally, after the step of using the average noise volume value as the noise volume value in the sound signal, the method for controlling the household appliance further includes:

[0020] The first threshold is determined according to a noise volume value in the sound signal.

[0021] Optionally, the control method of the household appliance includes:

[0022] Obtain the flow of people in the environment where the household appliances are located;

[0023] The first threshold is determined according to the flow of people in an environment where the household appliance is located.

[0024] Optionally, the step of controlling the household appliance to perform a corresponding preset operation includes:

[0025] The household appliance is controlled to perform a corresponding preset operation according to the current state of the household appliance, where the preset operation includes a power-on operation or a power-off operation.

[0026] In order to achieve the above-mentioned objectives, the present invention also provides a household appliance, which includes a memory, a processor, and a control program stored in the memory and executable on the processor. When the control program is executed by the processor, the various steps of the household appliance control method described above are implemented.

[0027] The present invention further provides a storage medium storing a control program, wherein the control program, when executed by a processor, implements the various steps of the household appliance control method described above.

[0028] The household appliance, control method, and storage medium provided by the present invention utilize a sound collection device to collect sound signals. Upon receiving the sound signal collected by the sound collection device, the method determines whether the sound signal has at least one peak volume value whose difference with the noise volume value in the sound signal is greater than or equal to a first threshold. If so, the peak volume value is determined to be the volume value corresponding to the sound controlling the household appliance, and the household appliance is controlled to perform a corresponding preset operation. This embodiment determines whether to control the household appliance by identifying the peak volume value in the sound signal. The peak volume value is easily identified with high accuracy and is convenient and quick to identify, thereby achieving convenient and quick control of the household appliance. In particular, the on / off control of the household appliance has a faster response speed than other control methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Schematic diagram of the hardware architecture of a household appliance involved in an embodiment of the present invention;

[0030] Figure 2 1. A flow chart of a first embodiment of a method for controlling a household appliance according to the present invention;

[0031] Figure 3 This is a structural diagram of an air-conditioning indoor unit according to an embodiment of the present invention;

[0032] Figure 4 for Figure 3 A structural diagram of the air-conditioning indoor unit from another perspective is shown;

[0033] Figure 5 for Figure 3 A schematic diagram of the three-dimensional structure of the sound receiving component shown;

[0034] Figure 6 for Figure 3 Schematic diagram of the assembly structure of the sound receiving component and the vibration conducting plate shown;

[0035] Figure 7 for Figure 6 A schematic exploded perspective view of the sound receiving assembly and the vibration conducting plate shown;

[0036] Figure 8 2 is a flow chart of a second embodiment of a method for controlling a household appliance according to the present invention;

[0037] Figure 9 FIG. 4 is a flow chart of a third embodiment of a method for controlling a household appliance according to the present invention.

[0038]

[0039]

[0040] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0041] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0042] The main technical solution of an embodiment of the present invention is as follows: receiving a sound signal collected by the sound collection device; when it is detected that the difference between at least one peak volume value of the sound signal and the noise volume value in the sound signal is greater than or equal to a first threshold, controlling the household appliance to perform a corresponding preset operation.

[0043] To better understand the above technical solutions, exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. Instead, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0044] As an implementation method, the hardware environment architecture involved in the control method of the household appliance can be as follows: Figure 1 shown.

[0045] Specifically, the hardware architecture involved in the control method of household appliances is a household appliance, and the household appliance can be an air conditioner such as an air conditioner, a purifier, an atomizer, etc., or a washing machine, a television, etc.

[0046] Wherein, the household appliance is provided with a sound collecting device, and the sound collecting device is used to collect sound signals.

[0047] As an implementation, the household appliance includes: a processor 101, such as a CPU, a memory 102, and a communication bus 103. The communication bus 103 is used to implement connection and communication between these components. The processor 102 is used to call a control program to perform control operations.

[0048] The memory 102 may be a high-speed RAM memory or a non-volatile memory, such as a disk memory.

[0049] It is understood that, in one embodiment, the control program for implementing the household appliance control process is stored in the memory 102 of the household appliance, and when the processor 101 calls the control program from the memory 102, it performs the following operations:

[0050] receiving a sound signal collected by the sound collection device;

[0051] When it is detected that the difference between at least one peak volume value of the sound signal and the noise volume value in the sound signal is greater than or equal to a first threshold, the household appliance is controlled to perform a corresponding preset operation.

[0052] Alternatively, in another embodiment, a control program for implementing the household appliance control process is stored in a computer-readable storage medium. During the process of controlling the household appliance, the processor 101 of the household appliance can call the control program from the computer-readable storage medium, and perform the above operations.

[0053] Based on the hardware architecture of the household appliance described above, various embodiments of a method for controlling a household appliance of the present invention are proposed.

[0054] In the first embodiment, please refer to Figure 2 The control method of the household appliance proposed in this embodiment includes the following steps:

[0055] Step S10, receiving a sound signal collected by a sound collection device;

[0056] Step S20 , when it is detected that the difference between at least one peak volume value of the sound signal and the noise volume value in the sound signal is greater than or equal to a first threshold, controlling the household appliance to execute a corresponding preset operation.

[0057] In this embodiment, the execution terminal is a household appliance, which may be an air conditioner, a washing machine, a television, or other household appliances with a housing, which are not listed here.

[0058] The sound collection device collects sound signals in real time and sends the collected sound signals to the processor of the household appliance. After receiving the sound signals, the processor of the household appliance analyzes the sound signals, obtains a peak volume value in the sound signal, compares the peak volume value with a noise volume value, obtains a difference between the peak volume value and the noise volume value, and compares the difference between the peak volume value and the noise volume value with a first threshold. If the difference between at least one of the peak volume values ​​and the noise volume value is greater than the first threshold, it is determined that the difference between at least one peak volume value and the noise volume value in the sound signal is greater than or equal to the first threshold. If the difference between at least one peak volume value and the noise volume value is greater than or equal to the first threshold, it indicates that the sound collection device has collected a sound with a high instantaneous volume. In this embodiment, the volume value corresponding to this sound is defined as the sound volume value that triggers the household appliance (the difference between the volume value corresponding to the sound and the noise volume value is greater than the first threshold, and the household appliance is triggered). Therefore, when it is detected that the difference between at least one peak volume value and the noise volume value in the sound signal is greater than or equal to the first threshold, it is determined that the household appliance is triggered and controlled to perform a preset operation. On the contrary, if the difference between the peak volume value and the noise volume value in the sound signal is smaller than the first threshold, it is determined that the sound corresponding to the peak volume value is noise and the household appliance does not affect the sound.

[0059] It should be noted that the sound collection device in this embodiment collects the sound signal generated by the vibration of the struck member. Therefore, this embodiment uses the knocking sound to control the household appliance to perform a preset operation. Because the knocking sound can cause the sound signal to produce a peak volume value greater than a certain volume value at a certain moment, the peak volume value is easy to identify, and the identification method is convenient and fast. As such, this embodiment uses knocking sound to control household appliances to solve the operational inconvenience caused by using a remote control to control household appliances, and solves the problems of inaccurate voice command recognition and slow power on and off response associated with voice command control.

[0060] It should be noted that the sound collection device in this embodiment may be a sound wave receiving component, or may be composed of a combination of a sound wave receiving component and a vibration conducting plate.

[0061] For details, please refer to Figures 3 to 7 The principle of sound collection implemented by the household appliance in this embodiment is as follows:

[0062] The household appliance 10 includes a housing 12, a sound wave receiving component 14b, and a controller (not shown), wherein the sound wave receiving component 14b is disposed on the housing 12 and is connected to the controller. The housing 12 includes a struck member having a struck surface, wherein the struck member may be the housing 12, such as when the housing 12 includes a front shell and a rear shell, and the front shell is the struck member, or the struck member may be a part of the housing 12, such as when the housing 12 includes a front panel 12a or a side panel, and the struck member is the inner side of the front panel 12a and / or the side panel.

[0063] In this embodiment, the sound wave receiving component 14b is installed on the knocked part. When the knocked part is knocked and vibrates, the air around the sound wave receiving component 14b is driven to vibrate. The sound wave receiving component 14b receives the sound waves corresponding to the user's knocking based on the air vibration, and the knocking information of the customer can be obtained. The sound wave receiving component 14b includes a mounting base 800 and a sound wave receiving module 600. The mounting base 800 has a mounting cavity 801. The sound wave receiving module 600 is installed in the mounting cavity 801, and the receiving end of the sound wave receiving module 600 faces the opening of the mounting cavity 801. The mounting base 800 is located on the side of the knocked part away from the knocked surface, and the opening of the mounting cavity 801 faces the knocked part. The mounting base 800 is a soundproof base. In this way, the sound wave receiving module 600 can only accurately receive the sound waves generated when the knocked part vibrates based on the mounting base 800. In addition to the sound waves generated by the vibration of the knocked part, the sound wave receiving module 600 is not easy to receive. Therefore, based on the setting of the sound wave receiving component 14b, it is possible to prevent the sound waves generated by the vibration of other air other than the mounting cavity 801 from affecting the sound waves received by the sound wave receiving module 600. That is, as long as the volume value corresponding to the sound wave received by the sound wave receiving module 600 is greater than the preset threshold, or the difference between the peak volume value corresponding to the sound wave and other volume values ​​is greater than the preset difference, it can be determined that the sound wave is generated when the knocked part is knocked. In this way, when the controller receives the sound waves collected by the sound wave receiving module 600, it can accurately and quickly identify the sound waves generated when the knocked part is knocked, and then control the household appliance to perform the preset operation.

[0064] When tapping the housing 12, for example, the portion of the housing 12 corresponding to the sound wave receiving component 14b is tapped. This facilitates the sound wave receiving component 14b to receive the sound waves. It is understood that in other embodiments, other portions of the housing 12 may also be tapped, as long as the sound waves including the user's tapping information can be received by the sound wave receiving component 14b.

[0065] In some embodiments, a sound insulation ring 300 is provided on the side of the struck member facing away from the struck surface. The sound insulation ring 300 extends axially into the mounting cavity 801 of the mounting seat 800 and covers the sound wave receiving module 600 .

[0066] Specifically, when the struck object vibrates, a sound insulation ring 300 is positioned in the direction of vibration propagation, sealing the sound wave receiving module 600 within the ring. This further improves the accuracy of collecting the sound waves generated by the struck object and prevents interference from other voice information. The sound insulation ring 300 isolates sound waves in the non-percussive sound transmission path, preventing them from being received by the sound wave receiving module 600. This further improves the "oversensitivity" or "insensitivity" phenomenon, thereby enhancing the accuracy of household appliance control.

[0067] In some embodiments, the sound collecting device is the sound wave receiving component 14b; or in another embodiment, the sound collecting device includes the sound wave receiving component 14b and the vibration conducting plate 200, as specifically described below by way of example:

[0068] In actual applications, sounds other than those produced by knocking on the appliance, such as unusual noises from the appliance itself or noises from the surrounding environment, can also trigger the appliance to operate. This can easily lead to an "oversensitive" control of the appliance by knocking on it. In the "insensitive" state, knocking on the appliance may not trigger the appliance to operate. In other words, in actual applications, the "oversensitive" or "insensitive" control of the appliance by knocking on it can easily lead to low accuracy in controlling the appliance.

[0069] Therefore, a vibration conducting plate 200 is provided on the side of the struck member facing the mounting seat 800 . The vibration conducting plate 200 has a receiving side 202 and a conducting side 204 . The receiving side 202 is in close contact with the struck member, and the sound insulation ring 300 is provided on the conducting side 204 .

[0070] A vibration conduction plate 200 is provided to transmit the vibrations generated by the knocking. This solid-state conduction method of "vibration conduction plate 200 transmitting the vibrations generated by the knocking" makes the acoustic loss coefficient of the sound produced by knocking the household appliance significantly smaller than the acoustic loss coefficient of the sound produced by non-knocking the household appliance. As a result, the sound waves generated by the knocking household appliance, located along the knocking sound transmission path, can be effectively transmitted to the sound wave receiving assembly 14b, while the sound waves generated by non-knocking the household appliance are less likely to be transmitted to the sound wave receiving assembly 14b. This effectively reduces the phenomenon of "oversensitivity" or "insensitivity," thereby improving the accuracy of household appliance control. That is, in this embodiment, by planning the transmission path of the sound waves generated by the knocking to the sound wave receiving assembly 14b, the acoustic loss coefficients of the knocking sound transmission path and the non-knocking sound transmission path are different, thereby effectively reducing the phenomenon of "oversensitivity" and "insensitivity," thereby improving the accuracy of household appliance control.

[0071] In this embodiment, the side of the vibration conducting plate 200 away from the sound wave receiving assembly 14b is used to be in close contact with the struck object. The close contact between the vibration conducting plate 200 and the struck object makes it very convenient for the vibration conducting plate 200 to receive the vibration generated by the striking.

[0072] In this embodiment, if Figure 3-Figure 7 As shown, the vibration conducting plate 200 is used to conduct the vibration generated by the knocking and make the air in the knocking sound transmission path vibrate to generate sound waves received by the sound wave receiving component 14b. The side of the vibration conducting plate 200 away from the sound wave receiving component 14b is used to be in close contact with the knocked part.

[0073] In this embodiment, the vibration conducting plate 200 has a receiving side 202 and a conducting side 204 located on the knocking sound transmission path. The receiving side 202 is used to be in close contact with the knocked object.

[0074] It can be understood that the above are only some embodiments for implementing the control process of the embodiment of the present invention. The above limitations are only for a better understanding of the implementation process of the control process of the embodiment of the present invention, and are not limited to the above structure.

[0075] Optionally, the noise volume value can be a fixed value preset in the household appliance, such as the noise volume value collected over a period of time based on a household appliance installation environment test, and the noise volume value with the highest frequency in the time period is used as the fixed value, or the noise volume value varies according to the current time, such as after receiving the sound signal collected by the sound collection device, obtaining the current time, determining the noise volume value corresponding to the current time based on the mapping relationship between the preset time and the noise volume value, and then comparing the peak volume value with the noise volume value.

[0076] Alternatively, in a preferred embodiment, the noise volume value is determined by real-time acquisition of the noise level in the current environment. After the step of receiving the sound signal collected by the sound collection device, the control method of the household appliance further includes:

[0077] When the peak volume value of the sound signal is detected, obtaining the sum of all noise volume values ​​within a preset time period before the peak volume value is detected;

[0078] Calculate the average noise volume value of the preset time period according to the sum of all the noise volume values;

[0079] The average noise volume value is used as the noise volume value in the sound signal.

[0080] That is, when a peak volume value is detected in the sound signal, all noise volume values ​​of a preset time period before the peak volume value are obtained, and then the average noise volume value of the preset time period is calculated according to the sum of the noise volume values ​​and the preset time period, and the average noise volume value is used as the noise volume value in the sound signal. The noise volume value is then compared with the peak volume value to determine whether the difference between the peak volume value and the noise volume value is greater than a first threshold, so as to determine whether the household appliance triggers control.

[0081] This embodiment improves the accuracy of peak volume determination by real-time sampling of the noise volume in the current environment to determine whether the peak volume meets the requirements for triggering a household appliance. If the noise volume is a fixed value, and the household appliance determines the knocking sound by comparing the fixed value with the peak volume, then when the ambient noise is high, there may be a moment when the difference between the peak volume of the noise generated and the fixed noise volume is greater than the first threshold. If the household appliance responds to the sound signal at this time, it will be mistakenly triggered. Therefore, compared with the embodiment in which the noise volume is a fixed value, this embodiment has higher accuracy in sound recognition.

[0082] It should be noted that the first threshold is a preset household appliance trigger value, which can be a fixed value. For example, the first threshold is defined by the difference between the volume collected when the struck part is struck and the background noise volume through experimental testing.

[0083] Alternatively, in one embodiment, the first threshold is determined according to the noise volume value. After the step of setting the average noise volume value to the noise volume value in the sound signal, the control method of the household appliance further includes:

[0084] The first threshold is determined according to a noise volume value in the sound signal.

[0085] The larger the noise volume value, the smaller the first threshold value (the first threshold value is greater than zero). When the ambient noise is loud, the difference between the peak volume value generated by knocking on the knocked part and the noise volume value may be smaller. If the first threshold value is a fixed value, the knocking sound recognition accuracy may be low. In this embodiment, the first threshold value is determined according to the noise volume value in the sound signal. The larger the noise volume value, the smaller the first threshold value. In this way, the recognition accuracy can be improved when the ambient noise is loud.

[0086] It should be noted that the noise volume value and the first threshold value may have a linear relationship or a nonlinear relationship.

[0087] For example, in a nonlinear relationship, the first threshold value can be calculated by presetting a first threshold value calculation model and using the first threshold value calculation model. Specifically, the first threshold value calculation model representing the mapping relationship between the noise volume value and the first threshold value is generated by training the historical control data of the user on the household appliance, wherein the historical control data includes at least one of the historical noise volume value, the historical peak volume value generated when the knocked part is knocked, the difference between the historical peak volume value and the historical noise volume value, the first threshold value and the response information of the household appliance, etc. Then, after determining the noise volume value in the sound signal, the noise volume value is used as the input parameter of the first threshold value calculation model, and the first threshold value calculation model outputs the first threshold value based on the noise volume value, and then compares whether the difference between the peak volume value of the sound signal and the noise volume value is greater than or equal to the first threshold value to determine whether to control the household appliance to perform the preset operation.

[0088] It should be noted that the above operation is performed once each time a peak volume value is detected in the sound signal, until the difference between at least one peak volume value and the noise volume value is greater than or equal to the first threshold value, then it is determined that the sound signal generated when the knocked part is struck is detected, it is determined that the control signal of the household appliance is detected, and the household appliance is controlled to perform the preset operation.

[0089] In this embodiment, the first threshold is determined based on the noise volume value, which can improve the recognition accuracy of the knocking sound signal.

[0090] Alternatively, in another embodiment, the first threshold is determined according to the environment in which the household appliance is located, such as the method for controlling the household appliance includes:

[0091] Obtain the flow of people in the environment where the household appliances are located;

[0092] The first threshold is determined according to the flow of people in an environment where the household appliance is located.

[0093] This embodiment has the same effect as the above embodiment, both of which aim to improve the recognition accuracy of the knocking sound signal. The difference is that this embodiment determines the first threshold by detecting the flow of people in the environment where the household appliance is located. For example, the greater the flow of people, the smaller the first threshold. When there is a large flow of people, the noise level in the environment where the household appliance is located is high. To improve recognition accuracy, the smaller the first threshold, the higher the recognition accuracy of the peak volume value.

[0094] It should be noted that, in this embodiment, when it is detected that the difference between at least one peak volume value and the noise volume value in the sound signal is greater than or equal to a first threshold value, it is determined that the household appliance is triggered and controlled, and the household appliance is controlled to perform a corresponding preset operation, wherein the preset operation includes but is not limited to a power-on operation and / or a power-off operation, and the corresponding preset operation performed is different according to the preset knocking control rules.

[0095] If the preset operation is a power-on operation and / or a power-off operation, the step of controlling the household appliance to perform the corresponding preset operation includes:

[0096] The home appliance is controlled to perform a corresponding preset operation according to the current state of the home appliance. For example, when the current state of the home appliance is the power-on state, the preset operation is the power-off operation; when the current state of the home appliance is the power-off state, the preset operation is the power-on operation.

[0097] In other embodiments, the preset operation may also be mode switching or mode entry control, for example, the steps of controlling the household appliance to perform the corresponding preset operation include:

[0098] When it is detected that the difference between the two peak volume values ​​of the sound signal and the noise volume value in the sound signal is greater than or equal to a first threshold, the household appliance is controlled to perform a mode switching operation.

[0099] A preset tapping control rule is provided, such as tapping once to control power on or off, and tapping twice to control mode switching of the household appliance. In this way, the preset operation to be performed by the household appliance is determined by determining the number of peak volume values.

[0100] Furthermore, a more specific control process can be set up. For example, when knocking twice, the target mode is determined according to the time interval of knocking. For example, when it is detected that the difference between the two peak volume values ​​of the sound signal and the noise volume value in the sound signal is greater than or equal to a first threshold, the time interval between the two peak volume values ​​is obtained; the target mode of the household insulation device is determined according to the time interval; and the household appliance is controlled to switch to the target mode.

[0101] This embodiment realizes intelligent control of household appliances by associating preset control rules with knocking sounds.

[0102] In this embodiment, a sound collection device is provided to collect sound signals. Upon receiving the sound signals collected by the sound collection device, a determination is made as to whether the sound signal has at least one peak volume value whose difference from the noise volume value in the sound signal is greater than or equal to a first threshold. If so, the peak volume value is determined to be the volume value corresponding to the sound for controlling the household appliance, and the household appliance is controlled to perform a corresponding preset operation. In this embodiment, determining whether to control the household appliance by identifying the magnitude of the peak volume value in the sound signal makes it easy to identify the peak volume value with high accuracy and a convenient and quick identification method, thereby achieving convenient and quick control of the household appliance. In particular, the on / off control of the household appliance has a faster response speed than other control methods.

[0103] Please refer to Figure 8 Based on the first embodiment, the present invention provides a second embodiment of a household appliance. In this embodiment, when the difference between at least one peak volume value of the sound signal and the noise volume value in the sound signal is detected to be greater than or equal to a first threshold, the step of controlling the household appliance to perform a corresponding preset operation includes:

[0104] Step S21: When it is detected that the difference between a first peak volume value of the sound signal and a noise volume value in the sound signal is greater than or equal to the first threshold, a second peak volume value is detected, and the time interval between the acquisition time points of the second peak volume value and the first peak volume value is less than a preset time interval;

[0105] Step S22: When the difference between the second peak volume value and the noise volume value is greater than or equal to the first threshold, control the household appliance to perform a corresponding preset operation.

[0106] Step S23: When the difference between the second peak volume value and the noise volume value is less than the first threshold value, the household appliance does not respond.

[0107] In order to improve the accuracy of the tapping control, this embodiment sets the number of tapping to at least two times, and controls the household appliance to perform the corresponding preset operation. In this way, it can avoid that when the user taps the household appliance by mistake, the household appliance also performs the corresponding preset operation, resulting in frequent switching of the household appliance and affecting the control effect.

[0108] Specifically, in this embodiment, after obtaining the sound signal, it is detected in real time or periodically whether there is a peak volume value in the sound signal and the difference between the peak volume value and the noise volume value in the sound signal is greater than or equal to the first threshold value. If it is detected that the difference between the first peak volume value (that is, the first peak volume value) in the sound signal and the noise volume value in the sound signal is greater than or equal to the first threshold value, then the second peak volume value whose difference with the noise volume value is greater than or equal to the first threshold value is continuously detected until the second peak volume value is detected. Then, it is determined to control the household appliance to perform the corresponding preset operation. In order to further improve the accuracy of the control, the time interval between the acquisition time points of the first peak volume value and the second peak volume value is less than the preset time interval, and the preset time interval can be set to 3 to 5 seconds. In this way, it can be further determined that the first peak volume value and the second peak volume value are generated when the two knocked parts are continuously knocked, and it can be further determined that the sound generated by the knocking action is the sound of controlling the household appliance, thereby controlling the household appliance to perform the corresponding preset operation.

[0109] On the contrary, if the time interval between the collection time points of the first peak volume value and the second peak volume value is greater than or equal to the preset time interval, it is possible that the first peak volume value and the second peak volume value are both generated when the user accidentally taps the tapped part at different times. At this time, the household appliance is controlled not to respond.

[0110] Optionally, a second peak volume value may also be detected at a preset time interval, but the second peak volume value may also be caused by ambient noise. Therefore, whether the second peak volume value is valid is determined by judging whether the difference between the second peak volume value and the noise volume value is less than the first threshold. If the difference is less than the first threshold, the household appliance does not respond.

[0111] This embodiment controls the household appliance by using the peak volume value generated by knocking the knocked part twice, thereby avoiding false triggering and improving the accuracy of the control of the household appliance.

[0112] Please refer to Figure 9 The present invention proposes a third embodiment of the household appliance based on the second embodiment. In this embodiment, after the step of detecting the second peak volume value, the third embodiment further includes:

[0113] Step S24: when the difference between the second peak volume value and the noise volume value is greater than or equal to the first threshold, obtaining the difference between the first peak volume value and the second peak volume value;

[0114] Step S25, determining whether the difference between the first peak volume value and the second volume value is less than or equal to a second threshold;

[0115] When the difference between the first peak volume value and the second peak volume value is less than or equal to a second threshold, the step of controlling the household appliance to perform a corresponding preset operation is performed.

[0116] When the difference between the first peak volume value and the second peak volume value is greater than or equal to the second threshold, the household appliance is prevented from responding.

[0117] This embodiment is based on the above-mentioned second embodiment. When it is detected that the difference between the second peak volume value and the noise volume value is greater than or equal to the first threshold value within the preset time interval, it is determined whether the difference between the first peak volume value and the second peak volume value is less than or equal to the second threshold value. If so, it means that the first peak volume value and the second peak volume value are both generated by knocking on the knocked part, and then the sound signal is determined to be a control signal of the household appliance, and the household appliance is controlled to perform the corresponding preset operation.

[0118] On the contrary, if the difference between the first peak volume value and the second peak volume value is greater than or equal to the second threshold value, it is possible that the first peak volume value or the second peak volume value is not generated when the knocked part is knocked, but is generated by two different vibration sources. At this time, there is a false triggering situation. Therefore, this embodiment is arranged that when the difference between the first peak volume value and the second peak volume value is greater than or equal to the second threshold value, the household appliance does not respond, so as to further improve the control accuracy of the household appliance.

[0119] This embodiment determines whether the first peak volume value and the second peak volume value are both generated when the struck part is struck by judging the magnitudes of the first peak volume value and the second peak volume value, thereby further improving the accuracy of knocking sound recognition.

[0120] Optionally, in other embodiments, the household appliance may be further provided with at least two sound collection devices, and the sound collection devices are respectively provided at different positions of the household appliance. For example, when the household appliance is an air conditioner, the sound collection devices are respectively provided on the front panel and the side panel of the indoor unit of the air conditioner. The control method of the household appliance further includes:

[0121] When it is detected that the difference between at least one peak volume value of the sound signal and the noise volume value in the sound signal is greater than or equal to a first threshold, the position information of the sound collection device that collects the peak volume value is obtained, and the household appliance is controlled to perform a corresponding preset operation according to the position information.

[0122] In this embodiment, when the preset position information is different, the preset operations executed by the corresponding household appliance are different. For example, if the peak volume value is collected by the sound collection device on the front panel, the household appliance is controlled to perform a power-on operation or a mode switching operation, and if the peak volume value is collected by the sound collection device on the side panel, the household appliance is controlled to perform a power-off operation or enter a noise reduction mode, etc. If a user taps on the side panel of a household appliance, it is generally because the user is in an inconvenient position, such as in bed or on a chair. At this time, the user may want to turn off the appliance, such as when getting up, or when entering a noise reduction mode when sleeping, or when sitting on a chair and entering a working state, and the household appliance needs to enter a noise reduction mode. The household appliance can be controlled by tapping on the side panel of the household appliance.

[0123] This embodiment enriches the functions of tapping control by arranging the sound collection devices at different locations of the household appliance.

[0124] It should be noted that the above are only preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A control method for a household appliance, characterized in that: The household appliance is provided with a sound collecting device, and the control method of the household appliance comprises the following steps: Receiving the sound signal collected by the sound collection device; When it is detected that the difference between at least one peak volume value of the sound signal and the noise volume value in the sound signal is greater than or equal to a first threshold, controlling the household appliance to perform a corresponding preset operation; The step of controlling the household appliance to perform a corresponding preset operation when it is detected that the difference between at least one peak volume value of the sound signal and the noise volume value in the sound signal is greater than or equal to a first threshold value comprises: When it is detected that the difference between a first peak volume value of the sound signal and a noise volume value in the sound signal is greater than or equal to the first threshold, a second peak volume value is detected, and the time interval between the acquisition time points of the second peak volume value and the first peak volume value is less than a preset time interval; When the difference between the second peak volume value and the noise volume value is greater than or equal to the first threshold, controlling the household appliance to perform a corresponding preset operation; After the step of detecting the second peak volume value, the method further includes: When the difference between the second peak volume value and the noise volume value is greater than or equal to the first threshold, obtaining the difference between the first peak volume value and the second peak volume value; When the difference between the first peak volume value and the second peak volume value is less than or equal to a second threshold, the step of controlling the household appliance to perform a corresponding preset operation is performed.

2. The control method of a household appliance according to claim 1, characterized in that: When it is detected that the difference between at least one peak volume value of the sound signal and the noise volume value in the sound signal is greater than or equal to a first threshold, the step of controlling the household appliance to perform a corresponding preset operation further includes: When the difference between the second peak volume value and the noise volume value is smaller than the first threshold, the household appliance does not respond.

3. The control method of a household appliance according to claim 1 or 2, characterized in that: After the step of receiving the sound signal collected by the sound collection device, the control method of the household appliance further includes: When the peak volume value of the sound signal is detected, obtaining the sum of all noise volume values ​​within a preset time period before the peak volume value is detected; Calculate the average noise volume value of the preset time period according to the sum of all the noise volume values; The average noise volume value is used as the noise volume value in the sound signal.

4. The control method of a household appliance according to claim 3, characterized in that: After the step of setting the average noise volume value to the noise volume value in the sound signal, the control method of the household appliance further includes: The first threshold is determined according to a noise volume value in the sound signal.

5. The control method of a household appliance according to claim 1, characterized in that: The control method of the household appliance comprises: Get the flow of people in the environment where the household appliances are located; The first threshold is determined according to the flow of people in an environment where the household appliance is located.

6. The control method of a household appliance according to claim 1, characterized in that: The step of controlling the household appliance to perform a corresponding preset operation comprises: The household appliance is controlled to perform a corresponding preset operation according to the current state of the household appliance, where the preset operation includes a power-on operation or a power-off operation.

7. A household appliance, characterized in that: The household appliance includes a memory, a processor, and a control program stored in the memory and executable on the processor. When the control program is executed by the processor, the steps of the household appliance control method according to any one of claims 1 to 6 are implemented.

8. A storage medium, characterized in that: The storage medium stores a control program, and when the control program is executed by the processor, each step of the method for controlling a household appliance according to any one of claims 1 to 6 is implemented.

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