Method for adjusting the protection frequency of an ultrasonic device and related apparatus

Abstract

The application discloses an ultrasonic device protection frequency adjustment method and related equipment. The method comprises the following steps: acquiring at least one ultrasonic output frequency of an ultrasonic device in normal operation; determining a deviation between the at least one ultrasonic output frequency and a protection frequency average value; wherein the protection frequency average value is an average value of a protection frequency upper limit value and a protection frequency lower limit value, the protection frequency upper limit value and the protection frequency lower limit value are used to determine a protection frequency range, and the protection frequency range is used to limit the ultrasonic output frequency of the ultrasonic device; and in response to the deviation exceeding a preset deviation threshold, resetting the protection frequency upper limit value and / or the protection frequency lower limit value. In this way, the application can reduce the misjudgment rate of the protection mechanism on the ultrasonic output frequency.

Description

Technical Field

[0001] The present application relates to the field of household appliances, and in particular to a method for adjusting the protection frequency of an ultrasonic device and related equipment. Background Art

[0002] When an ultrasonic drive device operates normally under load, the ultrasonic transducer's energy is transferred to the load, resulting in a lower temperature rise. When unloaded, the ultrasonic transducer's energy is not transferred, causing the transducer to overheat and become damaged. Because the ultrasonic transducer's operating resonant frequency is related to the load, the resonant frequency varies with different loads. Therefore, the load can be determined by the operating frequency.

[0003] However, as the working time increases, the parameters of the ultrasonic transducer, circuit board inductance, capacitance and other components will shift, causing the working resonant frequency to shift, resulting in misjudgment of the device's initial load identification parameters. Summary of the Invention

[0004] The present application mainly provides a method for adjusting the protection frequency of an ultrasonic device and related equipment, which solves the problem in the prior art that the ultrasonic device cannot adjust the protection frequency and is prone to erroneous shutdown.

[0005] In order to solve the above technical problems, the first aspect of the present application provides a method for adjusting the protection frequency of an ultrasonic device, the method comprising: obtaining at least one ultrasonic output frequency of the ultrasonic device during normal operation; determining the deviation between the at least one ultrasonic output frequency and the protection frequency mean; wherein the protection frequency mean is the average of the protection frequency upper limit value and the protection frequency lower limit value, the protection frequency upper limit value and the protection frequency lower limit value are used to determine the protection frequency range, and the protection frequency range is used to limit the ultrasonic output frequency of the ultrasonic device; in response to the deviation exceeding a preset deviation threshold, resetting the protection frequency upper limit value and / or protection frequency lower limit value.

[0006] To solve the above technical problems, the second aspect of the present application provides a household appliance, which includes: an ultrasonic output module for outputting ultrasonic waves to process food in a container; a frequency detection module for detecting the frequency of the ultrasonic waves; a protection frequency correction module for resetting the protection frequency upper limit value and / or the protection frequency lower limit value according to the method provided in the above first aspect; wherein the protection frequency upper limit value and the protection frequency lower limit value are used to determine a protection frequency range, and the protection frequency range is used to limit the ultrasonic output frequency of the ultrasonic device.

[0007] In order to solve the above technical problems, the third aspect of the present application provides a computer device, which includes a processor and a memory coupled to each other; a computer program is stored in the memory, and the processor is used to execute the computer program to implement the method for adjusting the protection frequency of the ultrasonic device provided in the first aspect above.

[0008] In order to solve the above technical problems, the fourth aspect of the present application provides a computer-readable storage medium, which stores program data. When the program data is executed by the processor, the method for adjusting the protection frequency of the ultrasonic device provided in the first aspect is implemented.

[0009] The beneficial effect of the present application is: different from the prior art, the present application first obtains at least one ultrasonic output frequency of the ultrasonic device during normal operation, and then determines the deviation between the at least one ultrasonic output frequency and the protection frequency mean, wherein the protection frequency mean is the average of the protection frequency upper limit value and the protection frequency lower limit value, the protection frequency upper limit value and the protection frequency lower limit value are used to determine the protection frequency range, and the protection frequency range is used to limit the ultrasonic output frequency of the ultrasonic device, and finally, in response to the deviation exceeding the preset deviation threshold, the protection frequency upper limit value and / or the protection frequency lower limit value are reset. In the above manner, the deviation between the ultrasonic output frequency and the protection frequency range can be judged, so as to correct the protection frequency upper limit value and / or the protection frequency lower limit value according to the deviation, so as to reduce the probability of misjudgment of the protection mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] 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. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0011] Figure 1 This is a schematic flow chart of an embodiment of a method for adjusting the protection frequency of an ultrasonic device according to the present application;

[0012] Figure 2 This is a schematic flow chart of another embodiment of the method for adjusting the protection frequency of an ultrasonic device of the present application;

[0013] Figure 3 This is a schematic flow chart of another embodiment of the method for adjusting the protection frequency of an ultrasonic device of the present application;

[0014] Figure 4 This is a schematic block diagram of a process for resetting the upper limit value of the protection frequency according to an embodiment of the present application;

[0015] Figure 5 This is a schematic block diagram of a process for resetting the protection frequency lower limit value according to an embodiment of the present application;

[0016] Figure 6 This is a schematic structural block diagram of an embodiment of the household appliance of the present application;

[0017] Figure 7 This is a schematic block diagram of the structure of an embodiment of a computer device of the present application;

[0018] Figure 8 This is a schematic structural block diagram of an embodiment of a computer-readable storage medium of the present application. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0020] The term "and / or" in this document simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the related objects are in an "or" relationship. Furthermore, "many" in this document means two or more than two.

[0021] The terms "first" and "second" in this application are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices.

[0022] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor do they constitute independent or alternative embodiments that are mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0023] See also Figure 1 , Figure 1 This is a flowchart of an embodiment of the method for adjusting the protection frequency of an ultrasonic device of the present invention. It should be noted that if there is substantially the same result, this embodiment is not used. Figure 1 The process sequence shown is limited. This embodiment includes the following steps:

[0024] Step S11: Acquire at least one ultrasonic output frequency of the ultrasonic device during normal operation.

[0025] The ultrasonic device of the present application is, for example, a household appliance using an ultrasonic transducer, such as a cold brew machine. When the ultrasonic transducer is working, the ultrasonic transducer is used to generate ultrasonic waves and transmit the generated wave energy to water or other food contained in the container.

[0026] Normal operation means that the ultrasonic output frequency is within the protection frequency range and the protection mechanism is not triggered.

[0027] It can be understood that under load conditions, the operating frequency of the ultrasonic transducer is relatively low, and under no-load conditions, the operating frequency of the ultrasonic transducer is relatively high. Therefore, a protection frequency range can be set. The protection frequency range includes a protection frequency lower limit value fa and a protection frequency upper limit value fb. When it is detected that the operating frequency of the ultrasonic transducer exceeds the protection frequency range (that is, the operating frequency is lower than the frequency lower limit value fa or higher than the protection frequency upper limit value fb), the protection mechanism is triggered, and the device can be controlled to shut down, or the voltage, power, etc. can be reduced.

[0028] In one embodiment, when the ultrasonic device is operating normally, the ultrasonic output frequency is sampled at every preset interval to obtain at least one ultrasonic output frequency.

[0029] The preset interval time is, for example, 0.1 seconds to 0.3 seconds, and can be set according to actual detection requirements.

[0030] Step S12: Determine the deviation between at least one ultrasonic output frequency and the protection frequency mean.

[0031] The protection frequency mean is the mean between the protection frequency upper limit and the protection frequency lower limit. The protection frequency upper limit and the protection frequency lower limit are used to determine the protection frequency range. The protection frequency range is used to limit the ultrasonic output frequency of the ultrasonic device.

[0032] Specifically, when an ultrasonic device is used for cooking, if there is a load (such as water or other substances) in the corresponding container and the ultrasonic energy is transmitted to the load, the temperature of the ultrasonic transducer will be small; however, in the case of no load, the energy of the ultrasonic transducer is difficult to transmit, resulting in a high temperature rise of the transducer, which can easily cause damage to the device and reduce the life of the device.

[0033] The deviation measures the degree to which the ultrasonic output frequency deviates from the protection frequency range. Generally speaking, when an ultrasonic device is operating normally, its output frequency remains stable at the protection frequency mean, or fluctuates slightly around the protection frequency mean. This deviation is considered zero or minimal. However, when an ultrasonic device is operating abnormally, such as when there is no water in the container, its output frequency may increase to the point where it exceeds the protection frequency limit. This is considered a significant deviation. Upon detecting that the ultrasonic frequency has exceeded the protection frequency range, the detection module initiates protective measures to prevent damage to the device.

[0034] After long-term research, researchers have discovered that during the use of ultrasonic devices, the ultrasonic output frequency may destabilize at the protection frequency mean due to other factors, and may even exceed the protection frequency limit. This deviation can increase, leading to misjudgment by the protection mechanism, causing the ultrasonic device to malfunction. For example, device aging can cause stress relief in the device, which in turn increases the ultrasonic output frequency, causing it to deviate further from the protection frequency mean, even exceeding the protection frequency limit. This can lead to misjudgment by the protection mechanism, making it difficult for the device to continue operating, or even causing it to malfunction.

[0035] In one embodiment, the deviation can be determined by the difference between the mean of at least one ultrasonic output frequency and the mean of the protection frequency. If the difference is too large, the deviation may be high. If the difference is small, it can be considered that the ultrasonic output frequency is stable around the mean of the protection frequency.

[0036] In another embodiment, the degree of deviation can also be determined by the proportion of sampling data that is greater than or less than the protection frequency mean. If the proportion of sampling data that is greater than or less than the protection frequency mean is too high, it can be considered that the degree of deviation is high and the protection frequency range needs to be adjusted. Otherwise, if the proportion of sampling data that is greater than or less than the protection frequency mean is relatively low, it can be indicated that the fluctuation of the ultrasonic output frequency is small and stable around the protection frequency mean, the probability of misjudgment is low, and there is no need to adjust the protection frequency range.

[0037] Step S13: in response to the deviation exceeding the preset deviation threshold, resetting the protection frequency upper limit value and / or the protection frequency lower limit value.

[0038] If the deviation exceeds the preset deviation threshold, it indicates that there is a high risk that the ultrasonic output frequency exceeds the protection frequency range, and the protection frequency upper limit and / or protection frequency lower limit should be reset.

[0039] The principle of resetting the upper limit of the protection frequency is to reduce the deviation and reduce the possibility that the ultrasonic output frequency exceeds the protection frequency.

[0040] For example, when the difference between the mean of the ultrasonic output frequency and the mean of the protection frequency exceeds the preset deviation threshold, and when the mean of the ultrasonic output frequency is greater than the mean of the protection frequency, you can choose to increase the upper limit of the protection frequency, and at the same time, you can choose to decrease the lower limit of the protection frequency or keep it unchanged; when the difference between the mean of the ultrasonic output frequency and the mean of the protection frequency exceeds the preset deviation threshold, and when the mean of the ultrasonic output frequency is less than the mean of the protection frequency, you can choose to decrease the lower limit of the protection frequency, and at the same time, you can choose to decrease the upper limit of the protection frequency or keep it unchanged.

[0041] Specifically, the method of resetting the upper limit value of the protection frequency and the lower limit value of the protection frequency is given in the following embodiments.

[0042] Different from the existing technology, the above method can correct the upper limit and / or lower limit of the protection frequency by judging the deviation between the ultrasonic output frequency and the protection frequency mean when the ultrasonic device is working normally, so as to prevent the ultrasonic output frequency from subtly increasing or decreasing due to device aging or changes in capacitance and inductance parameters in the circuit, which ultimately leads to the situation that the ultrasonic device cannot be used normally under load.

[0043] Among them, the time from the start of the ultrasonic device to the normal shutdown after the work is completed is a sampling period. Within the sampling period, the ultrasonic output frequency can be sampled at any working period. For example, data sampling can be performed within the preset time from the start of work, or sampling can be performed at preset intervals from the start of work to the completion of work to obtain the ultrasonic output frequency sampling of the entire working process of the ultrasonic device. In this way, the judgment of the deviation of the sampling data is more accurate, and the adjustment of the upper limit value and the lower limit value of the protection frequency is ultimately more accurate.

[0044] If the protection mechanism is triggered within a sampling period, all sampling data of the sampling period will be invalidated, no deviation judgment will be performed, and the upper and lower limits of the protection frequency will not be corrected, so as to avoid inaccurate judgment of the deviation of the ultrasonic output frequency within the protection frequency range due to abnormal frequency data, resulting in incorrect adjustment of the protection frequency range.

[0045] See also Figure 2 , Figure 2 This is a flow chart showing another embodiment of the method for adjusting the protection frequency of an ultrasonic device of the present invention. It should be noted that if there is substantially the same result, this embodiment is not used. Figure 2 The process sequence shown is limited. This embodiment includes the following steps:

[0046] Step S21: Acquire at least one ultrasonic output frequency of the ultrasonic device during normal operation.

[0047] This step is the same as step S11 in the previous embodiment and will not be described again here.

[0048] Step S22: Calculate a first average value of at least one ultrasonic output frequency.

[0049] Specifically, the at least one ultrasonic output frequency obtained in step S21 can be expressed as: f1, f2, ..., fn, and the first mean value of this step can be expressed as

[0050] Step S23: Determine the absolute value of the difference between the first mean and the protection frequency mean, and use the absolute value as the deviation.

[0051] Among them, the mean value of protection frequency can be expressed as: The deviation can be expressed as

[0052] Step S24: In response to the deviation exceeding the preset deviation threshold, determining the magnitude relationship between the first mean and the second mean.

[0053] If the deviation If the deviation exceeds the preset threshold, it can be considered that the deviation of the ultrasonic output frequency is too large. and the mean protection frequency The size relationship determines the deviation of the ultrasonic output frequency.

[0054] If the deviation If the preset deviation threshold is not exceeded, it can be considered that the deviation of the ultrasonic output frequency is small, and the possibility of misjudgment is small. The previously set protection frequency upper limit value and protection frequency lower limit value are retained and are not reset.

[0055] In one embodiment, the preset deviation threshold may be 0, and as long as the deviation exceeds 0 (i.e., as long as and If the frequency deviations are not equal), it is considered that the deviation is too large and the upper limit value of the protection frequency and / or the lower limit value of the protection frequency need to be adjusted or reset.

[0056] In other embodiments, the preset deviation threshold may not be 0, and a small deviation is allowed. The specific value of the preset deviation threshold is not limited here, and those skilled in the art may set it as needed.

[0057] Step S25: If the first mean value is greater than the protection frequency mean value, it is determined to reset the protection frequency upper limit value; if the first mean value is less than the protection frequency mean value, it is determined to reset the protection frequency lower limit value.

[0058] First mean Greater than the protection frequency mean This indicates that the ultrasonic frequency output value is deviating from the upper limit of the protection frequency. This can easily lead to false positives, such as no-load or other situations requiring protection mechanisms to be triggered. Therefore, it is necessary to reset the upper limit of the protection frequency to reduce false positives. You can choose to reset only the upper limit of the protection frequency or also the lower limit of the protection frequency.

[0059] Similarly, the first mean Less than the mean protection frequency This indicates that the ultrasonic frequency output value is deviating from the lower limit of the protection frequency. This can easily exceed the lower limit and trigger the protection mechanism. Therefore, it is necessary to reset the lower limit of the protection frequency to reduce false positives. You can choose to reset only the lower limit of the protection frequency or also the upper limit of the protection frequency.

[0060] This embodiment directly uses the first mean value of the collected ultrasonic output frequency to compare with the protection frequency mean value, and determines whether the protection frequency upper limit value and / or the protection frequency lower limit value should be reset according to whether the difference between the two exceeds the preset deviation threshold value. The first mean value can reflect the overall situation of all sampled data and act on the deviation judgment. It has high accuracy in deviation judgment, small calculation amount, and low processing power requirements.

[0061] See also Figure 3 , Figure 3 This is a flow chart of another embodiment of the method for adjusting the protection frequency of an ultrasonic device of the present invention. It should be noted that if there is substantially the same result, this embodiment is not used. Figure 3 The process sequence shown is limited. This embodiment includes the following steps:

[0062] Step S31: Acquire at least one ultrasonic output frequency of the ultrasonic device during normal operation.

[0063] This step is the same as step S11 in the above embodiment and will not be described again here.

[0064] Step S32: Determine the proportion of at least one ultrasonic output frequency that is greater than the protection frequency mean and whose difference from the protection frequency mean exceeds a preset difference threshold, or the proportion of at least one ultrasonic output frequency that is less than the protection frequency mean and whose difference from the protection frequency mean exceeds a preset difference threshold, and use the proportion as the deviation.

[0065] Specifically, the proportion of sampling data that is greater than the protection frequency mean and whose difference with the protection frequency mean exceeds the preset difference threshold in the total sampling data is calculated, or the proportion of sampling data that is less than the protection frequency mean and whose difference with the protection frequency mean exceeds the preset difference threshold in the total sampling data is calculated, and the calculated proportion result is used as the deviation.

[0066] Step S33: If the proportion of at least one ultrasonic output frequency that is greater than the protection frequency mean and whose difference from the protection frequency mean exceeds a preset difference threshold exceeds a first preset ratio, it is determined to reset the protection frequency upper limit.

[0067] In this step, the first preset ratio is used as the preset deviation threshold. If the ratio exceeds the first preset ratio, it is considered that the ultrasonic output frequency deviates too much from the protection frequency mean and deviates towards the protection frequency upper limit, and the protection frequency upper limit needs to be reset.

[0068] Optionally, the first preset ratio is between 40% and 80%, for example, 40%, 60%, 80%, etc.

[0069] Step S34: If the proportion of at least one ultrasonic output frequency that is less than the protection frequency mean and whose difference from the protection frequency mean exceeds the preset difference threshold exceeds a second preset proportion, it is determined to reset the protection frequency lower limit.

[0070] In this step, the first preset ratio is used as the preset deviation threshold. If the ratio exceeds the second preset ratio, it is considered that the ultrasonic output frequency deviates too much from the protection frequency mean and deviates towards the protection frequency lower limit, and the protection frequency lower limit needs to be reset.

[0071] Optionally, the first preset ratio is between 40% and 80%, for example, 40%, 60%, 80%, etc.

[0072] The second preset ratio may be the same as or different from the first preset ratio.

[0073] Optionally, this embodiment can simultaneously calculate the proportion of ultrasonic output frequencies that are greater than the protection frequency mean and whose difference with the protection frequency mean exceeds a preset difference threshold, as well as the proportion of frequencies that are less than the protection frequency mean and whose difference with the protection frequency mean exceeds a preset difference threshold. If both results meet step S33 and step S34 respectively, it can be determined that the deviation of the ultrasonic output frequency from the protection frequency upper limit and the protection frequency lower limit is relatively large, and it is determined that both the protection frequency upper limit and the protection frequency lower limit need to be reset.

[0074] Optionally, the preset difference threshold may be 0, or may be set to any value greater than 0.

[0075] In this embodiment, the proportion of the sampling data that is greater than the protection frequency mean and whose difference with the protection frequency mean exceeds the preset difference threshold is compared with the first preset proportion, and the proportion of the sampling data that is less than the protection frequency mean and whose difference with the protection frequency mean exceeds the preset difference threshold is compared with the second preset proportion. The proportion results can reflect the distribution of the sampling data in the protection frequency range, and the judgment of the deviation is more accurate.

[0076] See also Figure 4 , Figure 4 This is a flowchart of an embodiment of resetting the upper limit of the protection frequency in this application. It should be noted that if there is substantially the same result, this embodiment does not use Figure 4 The process sequence shown is limited. This embodiment includes the following steps:

[0077] Step S41: Determine a first update value based on the first average value, the protection frequency lower limit value, and the protection frequency upper limit value.

[0078] Specifically, the sum of the average value of the difference between the protection frequency upper limit value and the protection frequency lower limit value and the first mean value is used as the first update value.

[0079] The first update value can be expressed as:

[0080] Step S42: using the first updated value as the upper limit value of the protection frequency to complete the resetting of the upper limit value of the protection frequency.

[0081] The difference between the second mean value between the first update value and the protection frequency lower limit and the first mean value is within a first preset error range. The first preset error range is, for example,

[0082] Optionally, the protection frequency lower limit can be adaptively adjusted to so that the difference between the updated mean of the lower limit value of the protection frequency and the upper limit value of the protection frequency and the first mean value is within the first preset error range. between.

[0083] In this embodiment, after determining to reset the protection frequency upper limit, the average value of the difference between the protection frequency upper limit and the protection frequency lower limit and the sum of the first average value are used as the update value to reset the protection frequency upper limit, and the protection frequency lower limit can be optionally set at In this way, the deviation of the ultrasonic output frequency within the protection frequency range is smaller, thereby reducing the misjudgment of the protection mechanism.

[0084] See also Figure 5 , Figure 5 This is a flowchart of an embodiment of resetting the protection frequency lower limit value of the present application. It should be noted that if there is substantially the same result, this embodiment does not use Figure 5 The process sequence shown is limited. This embodiment includes the following steps:

[0085] Step S51: Determine a second update value based on the first average value, the protection frequency lower limit value, and the protection frequency upper limit value.

[0086] Specifically, the sum of the average value of the difference between the protection frequency lower limit value and the protection frequency upper limit value and the first average value is used as the second update value.

[0087] The second update value can be expressed as:

[0088] Step S52: Use the second updated value as the protection frequency lower limit value to complete the resetting of the protection frequency lower limit value.

[0089] The difference between the third mean value between the second update value and the upper limit value of the protection frequency and the first mean value is within the second preset error range. The second preset error range is, for example,

[0090] Optionally, the upper limit of the protection frequency can be adaptively adjusted to between the updated protection frequency lower limit value and the protection frequency upper limit value, so that the difference between the average of the first average value and the updated protection frequency lower limit value is within the second preset error range. between.

[0091] In this embodiment, after determining to reset the protection frequency lower limit, the average value of the difference between the protection frequency lower limit and the protection frequency upper limit and the sum of the first average value are used as the update value to reset the protection frequency lower limit, and the protection frequency upper limit can be optionally set at In this way, the deviation of the ultrasonic output frequency within the protection frequency range is smaller, thereby reducing the misjudgment of the protection mechanism.

[0092] In addition to the above method, in another embodiment, the ultrasonic output frequency of the ultrasonic device can be tested under rated load and under no-load respectively, and the protection frequency upper limit and protection frequency lower limit can be set according to the two measurement results.

[0093] Specifically, the ultrasonic output frequency under no-load is, for example, F 空 , the ultrasonic output frequency under rated load is, for example, F 负 , then set the protection frequency upper limit value to F 负 -A, set the protection frequency upper limit to F 空 +B, where A and B are configurable frequency values, which can be equal or unequal. The specific settings can be made according to the device conditions and are not limited here.

[0094] See also Figure 6 , Figure 6 The figure is a schematic block diagram of the structure of an embodiment of a household appliance of the present application. The household appliance 100 includes: an ultrasonic output module 110, a frequency detection module 120, and a frequency correction module 130. The ultrasonic output module 110 is used to output ultrasonic waves to process food, the frequency detection module 120 is used to detect the frequency of the ultrasonic waves, and the frequency correction module 130 is used to reset the upper limit value and / or lower limit value of the protection frequency according to the method for adjusting the protection frequency of the ultrasonic device of each embodiment of the present application. The upper limit value and the lower limit value of the protection frequency are used to determine the protection frequency range, and the protection frequency range is used to limit the ultrasonic output frequency of the ultrasonic device.

[0095] Among them, the household appliance 100 is, for example, a cold brew machine or other device that uses ultrasonic energy to process food. Specifically, during operation, after food is placed in the container, the ultrasonic output module 110 emits ultrasonic waves. After the ultrasonic waves come into contact with the food, they will peel off and destroy the tissue cells in the food to quickly release the nutrients and flavor molecules inside the food, thereby achieving low-temperature extraction of the food.

[0096] The ultrasonic output module 110 is, for example, an ultrasonic transducer, which is used to convert input electrical power into ultrasonic waves and then transmit them.

[0097] The frequency detection module 120 is used to detect the ultrasonic output frequency when the household appliance 100 is working. When it is detected that the ultrasonic output frequency exceeds the protection frequency range, the protection mechanism is triggered to shut down the device or enable other protection measures to prevent damage to the household appliance 100.

[0098] The frequency correction module 130 is used to perform the following operations: obtain at least one ultrasonic output frequency of the ultrasonic device during normal operation; determine the deviation between the at least one ultrasonic output frequency and the protection frequency mean; in response to the deviation exceeding a preset deviation threshold, reset the protection frequency upper limit value and / or the protection frequency lower limit value.

[0099] For the description of each step executed by the frequency correction module 130 , please refer to the description of each step of the embodiment of the method for adjusting the protection frequency of an ultrasonic device of the present application, which will not be repeated here.

[0100] See also Figure 7 , Figure 7 The computer device 200 includes a processor 210 and a memory 220 coupled to each other. The memory 220 stores a computer program. The processor 210 is configured to execute the computer program to implement the method for adjusting the protective frequency of an ultrasonic device described in the above embodiments.

[0101] For the description of each step of the processing execution, please refer to the description of each step of the embodiment of the method for adjusting the protection frequency of the ultrasonic device of the present application, which will not be repeated here.

[0102] The memory 220 can be used to store program data and modules. The processor 210 executes various functional applications and data processing by running the program data and modules stored in the memory 220. The memory 220 may mainly include a program storage area and a data storage area. The program storage area may store an operating system, at least one application required for a function (such as a data processing function, a computing function, etc.), etc.; the data storage area may store data created based on the use of the computer device 200 (such as ultrasonic output frequency data, protection frequency range data), etc. In addition, the memory 220 may include a high-speed random access memory and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage device. Accordingly, the memory 220 may also include a memory controller to provide the processor 210 with access to the memory 220.

[0103] The computer device 200 can be installed on the appliance to directly perform protection frequency range correction, or it can be installed on a server. After the appliance detects the ultrasonic output frequency, it sends the data to the server, so that the server can calculate the deviation of the data to determine whether to reset the protection frequency upper limit value and / or protection frequency lower limit value. Specifically, the appliance can be provided with a communication unit, such as a cellular communication module, a WiFi module, a wired network (such as an optical fiber), etc., to send the ultrasonic output frequency data to the server via the network. The server calculates whether to reset the protection frequency upper limit value and the protection frequency lower limit value, and if so, calculates the specific values ​​of the protection frequency upper limit value and the protection frequency lower limit value, and sends it to the appliance.

[0104] In the various embodiments of the present application, the disclosed methods and devices can be implemented in other ways. For example, the various embodiments of the computer device 200 described above are merely illustrative. For example, the division of the modules or units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interface, device or unit, which can be electrical, mechanical or other forms.

[0105] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of this embodiment.

[0106] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0107] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, or the part that contributes to the existing technology, or all or part of the technical solution, can be embodied in the form of a software product, and the computer software product can be stored in a storage medium.

[0108] See Figure 8 , Figure 8This is a schematic structural block diagram of an embodiment of a computer-readable storage medium of the present application. The computer-readable storage medium 300 stores program data 310. When the program data 310 is executed, the steps of each embodiment of the method for adjusting the protection frequency of an ultrasonic device as described above are implemented.

[0109] For the description of each step of the processing execution, please refer to the description of each step of the embodiment of the method for adjusting the protection frequency of the ultrasonic device of the present application, which will not be repeated here.

[0110] The computer-readable storage medium 300 may be any medium that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0111] The above description is merely an embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A method for adjusting the protection frequency of an ultrasonic device, characterized in that: The method comprises: Obtaining at least one ultrasonic output frequency of the ultrasonic device during normal operation; Determine the degree of deviation between the at least one ultrasonic output frequency and the protection frequency mean; wherein the protection frequency mean is the mean of the protection frequency upper limit value and the protection frequency lower limit value, and the protection frequency upper limit value and the protection frequency lower limit value are used to determine a protection frequency range, and the protection frequency range is used to limit the ultrasonic output frequency of the ultrasonic device; wherein, determining the degree of deviation between the at least one ultrasonic output frequency and the protection frequency mean includes: calculating a first mean value of the at least one ultrasonic output frequency; determining the absolute value of the difference between the first mean value and the protection frequency mean value, and taking the absolute value as the degree of deviation; or, determining the proportion of the at least one ultrasonic output frequency that is greater than the protection frequency mean value and whose difference from the protection frequency mean value exceeds a preset difference threshold, or the proportion of the at least one ultrasonic output frequency that is less than the protection frequency mean value and whose difference from the protection frequency mean value exceeds a preset difference threshold, and taking the proportion as the degree of deviation; In response to the deviation exceeding a preset deviation threshold, the protection frequency upper limit value and / or the protection frequency lower limit value are reset.

2. The method according to claim 1, characterized in that The obtaining of at least one ultrasonic output frequency of the ultrasonic device during normal operation includes: When the ultrasonic device is operating normally, the ultrasonic output frequency is sampled at every preset interval to obtain at least one ultrasonic output frequency.

3. The method according to claim 1, characterized in that In response to the deviation exceeding a preset deviation threshold, determining to reset the protection frequency upper limit value and / or the protection frequency lower limit value includes: In response to the deviation exceeding the preset deviation threshold, determining a magnitude relationship between the first mean value and the protection frequency mean value; If the first mean value is greater than the protection frequency mean value, determining to reset the protection frequency upper limit value; If the first mean value is smaller than the protection frequency mean value, it is determined to reset the protection frequency lower limit value.

4. The method according to claim 1, wherein In response to the deviation exceeding a preset deviation threshold, determining to reset the protection frequency upper limit value and / or the protection frequency lower limit value includes: If the proportion of the at least one ultrasonic output frequency greater than the protection frequency average exceeds a first preset proportion, determining to reset the protection frequency upper limit; If the proportion of the at least one ultrasonic output frequency that is less than the protection frequency average exceeds a second preset proportion, it is determined to reset the protection frequency lower limit.

5. The method according to any one of claims 3 or 4, characterized in that After determining to reset the protection frequency upper limit value, the method includes: Determining a first update value based on the first average value, the protection frequency lower limit value, and the protection frequency upper limit value; Using the first updated value as the protection frequency upper limit value to complete resetting the protection frequency upper limit value; The difference between a second mean value between the first update value and the protection frequency lower limit value and the first mean value is within a first preset error range.

6. The method according to claim 5, characterized in that The determining a first update value based on the first average value, the protection frequency lower limit value, and the protection frequency upper limit value includes: The first update value is taken as the sum of an average value of the difference between the protection frequency upper limit value and the protection frequency lower limit value and the first mean value.

7. The method according to any one of claims 3 or 4, characterized in that After determining to reset the protection frequency lower limit value, the method further includes: Determining a second update value based on the first average value, the protection frequency lower limit value, and the protection frequency upper limit value; Using the second updated value as the protection frequency lower limit value to complete resetting the protection frequency lower limit value; The difference between a third mean value between the second update value and the protection frequency upper limit value and the first mean value is within a second preset error range.

8. A household appliance, characterized in that: The household appliances include: An ultrasonic output module, used for outputting ultrasonic waves to process food in the container; A frequency detection module, used to detect the frequency of the ultrasonic wave; A frequency correction module, used to reset the protection frequency upper limit value and / or the protection frequency lower limit value according to the method described in any one of claims 1 to 7; wherein the protection frequency upper limit value and the protection frequency lower limit value are used to determine a protection frequency range, and the protection frequency range is used to limit the ultrasonic output frequency of the ultrasonic device.

9. A computer device, characterized in that: The computer device includes a processor and a memory coupled to each other; a computer program is stored in the memory, and the processor is configured to execute the computer program to implement the steps of the method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores program data, and when the program data is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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