阅读说明：本技术 控制方法、微波设备和存储介质 (Control method, microwave device and storage medium ) 是由 吴添洪 陈茂顺 唐相伟 邓雁青 于 2020-05-29 设计创作，主要内容包括：本发明公开了一种控制方法、微波设备和存储介质。控制方法用于微波设备,微波设备包括微波源,控制方法包括：获取扫描时段内的加热参数和扫描参数；根据加热参数确定扫描时段内的总能量阈值；根据扫描参数确定扫描时段内的扫描总能量；在扫描总能量小于总能量阈值的情况下,在微波设备根据加热参数在扫描时段内进行加热的过程中,控制微波源根据扫描参数在扫描时段内进行扫描,以确定回损信息；根据回损信息更新加热参数。如此,可以避免扫描能量过大而影响微波设备的正常工作,有利于保证微波设备的安全性和加热效果。(The invention discloses a control method, microwave equipment and a storage medium. The control method is used for the microwave equipment, the microwave equipment comprises a microwave source, and the control method comprises the following steps: acquiring heating parameters and scanning parameters in a scanning time period; determining a total energy threshold value in a scanning time period according to the heating parameters; determining total scanning energy in a scanning time period according to the scanning parameters; under the condition that the total scanning energy is smaller than the total energy threshold, controlling a microwave source to scan in a scanning time period according to the scanning parameters in the process that the microwave equipment heats in the scanning time period according to the heating parameters so as to determine return loss information; and updating the heating parameters according to the return loss information. Therefore, the normal work of the microwave equipment can be prevented from being influenced by overlarge scanning energy, and the safety and the heating effect of the microwave equipment can be ensured.)

1. A control method for a microwave apparatus, the microwave apparatus comprising a microwave source, the control method comprising:

acquiring heating parameters and scanning parameters in a scanning time period;

determining a total energy threshold value within the scanning period according to the heating parameters;

determining total scanning energy in the scanning time period according to the scanning parameters;

under the condition that the total scanning energy is smaller than the total energy threshold, controlling the microwave source to scan in the scanning time period according to the scanning parameters in the process that the microwave equipment heats in the scanning time period according to the heating parameters so as to determine return loss information;

and updating the heating parameters according to the return loss information.

2. The control method of claim 1, wherein determining a total energy threshold for the scan period based on the heating parameter comprises:

determining the total heating energy in the scanning time period according to the heating parameters;

determining the total energy threshold value according to the total heating energy.

3. The control method according to claim 1, characterized by comprising:

and updating the scanning parameters when the total scanning energy is larger than or equal to the total energy threshold, and entering the step of determining the total scanning energy in the scanning time interval according to the scanning parameters.

4. The control method of claim 3, wherein the scan parameter comprises a scan power, and updating the scan parameter comprises:

and reducing the scanning power within a preset power range.

5. The control method according to claim 3, wherein the scanning parameters include a total number of scanning frequency points, and adjusting the scanning parameters includes:

and reducing the total number of the scanning frequency points.

6. The control method according to claim 5, wherein reducing the total number of the scanning frequency points comprises:

and increasing the scanning step length in a preset scanning frequency band to reduce the total number of the scanning frequency points.

7. The control method according to claim 5, wherein reducing the total number of the scanning frequency points comprises:

and reducing the total number of the scanning frequency points according to the preset frequency point priority.

8. The control method of claim 1, wherein the sweep parameter comprises a sweep power ranging from: 50% -100% of the maximum output power of the microwave source.

9. Microwave device, characterized in that it comprises a microwave source and a controller for performing the control method according to any of claims 1-8.

10. A computer-readable storage medium, on which a computer program is stored, characterized in that the program, when executed by a processor, implements the steps of the control method according to any one of claims 1 to 8.

Technical Field

The present invention relates to household appliances, and more particularly, to a control method, a microwave device, and a storage medium.

Background

In the related art, a microwave device using a semiconductor power amplifier as a power source generally performs scanning during heating food, so as to obtain the response characteristic of a cavity containing food through signal excitation and reflection detection, thereby providing a basis for a subsequent heating algorithm. However, the sampling detection is liable to affect the heating process and thus the proper operation of the microwave device.

Disclosure of Invention

The embodiment of the invention provides a control method, microwave equipment and a storage medium.

The control method of the embodiment of the invention is used for microwave equipment, the microwave equipment comprises a microwave source, and the control method comprises the following steps:

acquiring heating parameters and scanning parameters in a scanning time period;

determining a total energy threshold value within the scanning period according to the heating parameters;

determining total scanning energy in the scanning time period according to the scanning parameters;

under the condition that the total scanning energy is smaller than the total energy threshold, controlling the microwave source to scan in the scanning time period according to the scanning parameters in the process that the microwave equipment heats in the scanning time period according to the heating parameters so as to determine return loss information;

and updating the heating parameters according to the return loss information.

According to the control method of the embodiment of the application, under the condition that the total scanning energy in the scanning period is smaller than the total energy threshold in the scanning period, the microwave source is controlled to scan to determine the return loss information, and the heating parameters are updated according to the return loss information, so that the influence on the normal work of the microwave equipment due to the overlarge scanning energy can be avoided, and the safety and the heating effect of the microwave equipment can be favorably ensured.

In some embodiments, determining a total energy threshold value within the scan period from the heating parameter comprises:

determining the total heating energy in the scanning time period according to the heating parameters;

determining the total energy threshold value according to the total heating energy.

In certain embodiments, the control method comprises:

and updating the scanning parameters when the total scanning energy is larger than or equal to the total energy threshold, and entering the step of determining the total scanning energy in the scanning time interval according to the scanning parameters.

In some embodiments, the scan parameter comprises a scan power, and updating the scan parameter comprises:

and reducing the scanning power within a preset power range.

In some embodiments, the scanning parameters include a total number of scanning frequency points, and adjusting the scanning parameters includes:

and reducing the total number of the scanning frequency points.

In some embodiments, reducing the total number of scanned frequency points comprises:

and increasing the scanning step length in a preset scanning frequency band to reduce the total number of the scanning frequency points.

In some embodiments, reducing the total number of scanned frequency points comprises:

and reducing the total number of the scanning frequency points according to the preset frequency point priority.

In some embodiments, the scan parameter comprises a scan power, the scan power ranging from: 50% -100% of the maximum output power of the microwave source.

The microwave device of the embodiment of the invention comprises a microwave source and a controller, wherein the controller is used for executing the control method of any one of the above embodiments.

According to the microwave equipment provided by the embodiment of the invention, under the condition that the total scanning energy in the scanning period is smaller than the total energy threshold in the scanning period, the microwave source is controlled to scan to determine the return loss information, and the heating parameters are updated according to the return loss information, so that the influence on the normal work of the microwave equipment due to the overlarge scanning energy can be avoided, and the safety and the heating effect of the microwave equipment can be ensured.

A computer-readable storage medium of an embodiment of the present invention has a computer program stored thereon, which when executed by a processor, implements the steps of the control method of any of the above-described embodiments.

According to the computer-readable storage medium provided by the embodiment of the invention, under the condition that the total scanning energy in the scanning period is smaller than the total energy threshold in the scanning period, the microwave source is controlled to scan to determine the return loss information, and the heating parameters are updated according to the return loss information, so that the influence on the normal work of the microwave equipment due to the overlarge scanning energy can be avoided, and the safety and the heating effect of the microwave equipment can be ensured.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic flow chart of a control method according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a microwave apparatus according to an embodiment of the present invention;

FIG. 3 is a block schematic diagram of a microwave apparatus according to an embodiment of the present invention;

FIG. 4 is a schematic flow chart of a control method according to another embodiment of the present invention;

FIG. 5 is a schematic flow chart of a control method according to yet another embodiment of the present invention;

FIG. 6 is a flow chart illustrating a control method according to still another embodiment of the present invention;

FIG. 7 is a schematic flow chart of a control method according to another embodiment of the present invention;

FIG. 8 is a schematic flow chart of a control method according to yet another embodiment of the present invention;

fig. 9 is a flowchart illustrating a control method according to still another embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

Referring to fig. 1 and 2, a control method and a microwave apparatus 100 are provided according to an embodiment of the present invention. The control method is used for the microwave device 100, the microwave device 100 comprises a microwave source 110, and the control method comprises the following steps:

step S11: acquiring heating parameters and scanning parameters in a scanning time period;

step S12: determining a total energy threshold value in a scanning time period according to the heating parameters;

step S13: determining total scanning energy in a scanning time period according to the scanning parameters;

step S14: under the condition that the total scanning energy is smaller than the total energy threshold, in the process that the microwave device 100 heats in the scanning time period according to the heating parameters, controlling the microwave source 110 to scan in the scanning time period according to the scanning parameters so as to determine return loss information;

step S16: and updating the heating parameters according to the return loss information.

The control method in the embodiment of the present invention can be implemented by the microwave apparatus 100 in the embodiment of the present invention.

Referring to fig. 3, a microwave apparatus 100 according to an embodiment of the present invention includes a microwave source 110 and a controller 120, wherein the controller 120 is configured to obtain a heating parameter and a scanning parameter during a scanning period; and a total energy threshold value used for determining the total energy in the scanning time period according to the heating parameters; and is used for determining the total scanning energy in the scanning time interval according to the scanning parameters; and is used for controlling the microwave source 110 to scan in the scanning time interval according to the scanning parameters in the process that the microwave device 100 heats in the scanning time interval according to the heating parameters under the condition that the total scanning energy is smaller than the total energy threshold value so as to determine return loss information; and for updating the heating parameters in dependence on the return loss information.

In the control method and the microwave device 100 of the embodiment, when the total scanning energy in the scanning period is smaller than the total energy threshold in the scanning period, the microwave source 110 is controlled to scan to determine the return loss information and update the heating parameters according to the return loss information, so that the influence of the excessive scanning energy on the normal operation of the microwave device 100 can be avoided, and the safety and the heating effect of the microwave device 100 can be ensured.

Note that the return loss is also the return loss, which is a logarithmic value of the ratio of the emitted power to the reflected power. In step S14, the return loss information may include a return loss value corresponding to each scanned frequency bin. Thus, the return loss information is scanned based on the full frequency band, the scanning frequency points are more, and the characteristics of the load, namely the food, can be described more accurately, so that the microwave equipment 100 is controlled to operate more accurately.

In addition, the return loss value can be converted with parameters such as reflection coefficient, standing wave value and the like. Therefore, parameters such as a reflection coefficient, a standing wave value and the like can be obtained firstly, and then a return loss value is determined according to the obtained parameters; or obtaining the return loss value, and determining parameters such as the reflection coefficient, the standing wave value and the like according to the return loss value.

It can be understood that, in the related art, the microwave device 100 using the semiconductor power amplifier as the power source generally performs scanning during the process of heating food, so as to obtain the response characteristics of the cavity containing food through signal excitation and reflection detection, and quantize the response characteristics into different forms of return loss such as reflection coefficient and standing wave, thereby providing a basis for the subsequent heating algorithm, that is, providing a basis for updating the heating parameters.

Since the load, i.e. the food, responds differently at different frequencies, the reflection coefficient fluctuates within the available sweep frequency range. The more intense the fluctuation, the greater the number of frequency points that need to be scanned. Under the same sampling speed, the more the frequency points are, the longer the sampling time is required in the whole frequency band of the scanning frequency band. This results in a greater total energy of scanning within the scanning period relative to the total energy of heating of the heating process within the scanning period.

Furthermore, the related art generally requires that the heating process use certain specific frequency points, specific phases, at specific stages. Therefore, the scanning total energy with excessive specific gravity can interfere with the energy distribution of the heating process, influence the heating parameters, and further have great influence on the heating result.

In the control method of the embodiment, the microwave source 110 is controlled to scan to determine the return loss information only when the total scanning energy in the scanning period is smaller than the total energy threshold in the scanning period, and the limitation of the total energy threshold avoids the excessive scanning energy, which is beneficial to ensuring the safety and the heating effect of the microwave device 100.

In step S11, the scanning period may coincide with the heating period, or may be a partial period in the heating period. The specific relationship of the scanning period and the heating period is not limited herein.

The heating parameters include, but are not limited to, heating amplitude, heating frequency, heating phase, heating switch, etc. The initial heating parameters may be determined from input information and preset menus. The input information includes, but is not limited to, the weight, type, taste bias, etc. of the food input by the user.

The scanning parameters include, but are not limited to, scanning power, scanning frequency point, scanning phase, and the like. The specific form of the heating parameters and the scanning parameters is not limited herein.

In step S13, the total energy of the scan within the scan period may be determined by the following formula: e ═ P_kX t x N; wherein E is total scanning energy, P_kFor the scanning power, t is the shortest scanning time of each scanning frequency point, and N is the total number of the scanning frequency points.

The scanning power and the total number of scanning frequency points can be adjusted. The shortest scanning time of each scanning frequency point is determined by the microwave source 110, is an inherent parameter of the microwave source 110, and may be stored in the controller 120 in advance, or the model of the microwave source 110 may be obtained first, and then the shortest scanning time of each scanning frequency point is queried according to the model of the microwave source 110. It can be understood that the shortest scanning time of each scanning frequency point can be minimized by increasing the scanning speed of each scanning frequency point to the maximum value.

In this embodiment, the scan parameter includes a scan power, and the range of the scan power is: 50% -100% of the maximum output power of the microwave source 110. Therefore, the accuracy of return loss information can be improved, and the cost of the detection device can be reduced.

That is, P_kP × k; wherein, P_kFor the scan power, P is the maximum output power of the microwave source 110 and k is the scaling factor. The range of the proportionality coefficient is 50% -100%.

Alternatively, the total energy of the scan over the scan period may be determined by the following equation: e ═ P × k × t × N.

Specifically, the scanning power is, for example, 50%, 54%, 61%, 75%, 82%, 93%, 100% of the maximum output power of the microwave source 110. The specific numerical relationship between the scanning power and the maximum output power of the microwave source 110 is not limited to the above range.

It will be appreciated that the related art typically employs lower power levels during the scanning process in order to avoid scanning detection from affecting the heating process. For example: for a microwave device 100 with a maximum power of around 500W, the scanning power is 10W, even less than 1W. Thus, the scanning power and total scanning energy are almost negligible with respect to the heating power and total heating energy.

However, because the heating power and the scanning power have a great difference, there is a deviation between the return loss value of the scanning result and the theoretical return loss value, and if the return loss information obtained by scanning with a smaller power is directly adopted to adjust the heating parameter heated with a larger power, the adjustment of the heating parameter is easily inaccurate, so that the heating effect is poor. Moreover, since the impedance of the microwave device 100 varies greatly under different load conditions at different frequency points, the above deviation cannot be compensated by one-time calibration.

Also, lower levels of scan power require more accuracy in forward and backward power detection. In addition, the power during heating is typically close to the maximum power, and therefore forward power also needs to be monitored. In this case, the forward detection element needs to detect a small forward power and a large forward power, and the reverse detection element needs to detect a small reverse power and a large reverse power. That is, the sensing element needs to have a large dynamic range. While a larger dynamic range results in higher costs.

For example, when the detection device detects a high power backward wave during heating, the upper limit of detection is usually larger than the maximum output power of the microwave source 110. The detection device is used for detecting the backward wave of the scanning process with low power, and the backward wave is 20dB lower than the scanning power in individual states. If the scanning power is 17-20dB lower than the maximum heating power of the microwave source 110, the dynamic range of the detection device needs to reach 37-40dB, the requirement on the detection device is high, and the corresponding cost is high. If the detection precision of the reverse wave is reduced to be less than 20dB, the detection precision of the load response characteristic is reduced, so that the heating parameter is not beneficial to updating accurately, and the heating effect is poor.

Note that the unit dB is used to characterize the relative value. In the above example, the unit dB may be used to characterize the relative value to the maximum output power of the microwave source 110. Namely: dB ═ 10lg (power w/maximum output power w of microwave source 110). In other examples, the unit dB may also be used to characterize the relative values of the two powers being compared. It will be appreciated that in other embodiments, the power may also be measured in units of w. And are not limited herein.

In addition, even if the forward direction detection is performed by using a detection element with a larger dynamic range, the return loss value obtained by scanning with low power is greatly different from the return loss value corresponding to high power during heating due to the nonlinear characteristics of the detection element, and data needs to be calibrated greatly, which is likely to cause more errors.

In the control method and the microwave apparatus 100 of the present embodiment, the range of the scanning power is: the maximum output power of the microwave source 110 is 50% -100%, so that the scanning power is close to the maximum output power of the microwave source 110, the accuracy of return loss information can be improved, the accuracy of heating parameters updated according to the return loss information is improved, calibration is not needed, errors caused by calibration can be avoided, and the heating effect can be improved. Moreover, the dynamic range required by the detection device can be smaller by adopting larger scanning power, and the cost of the detection device is favorably reduced.

In step S14, in the process that the microwave device 100 heats in the scanning time period according to the heating parameter, the microwave source 110 is controlled to scan in the scanning time period according to the scanning parameter, which may be controlling the microwave device 100 to start heating first and then controlling the microwave source 110 to start scanning; it is also possible to control the microwave source 110 to start scanning at the same time as the microwave apparatus 100 is controlled to start heating. In other words, it is sufficient that both heating and scanning are performed within the scanning period. The specific sequence of controlling the microwave apparatus 100 to start heating and controlling the microwave source 110 to start scanning is not limited herein.

In step S16, the heating parameter is updated based on the return loss information, that is, the heating parameter in the next heating stage is updated based on the return loss information. In other words, after the heating parameters are updated according to the return loss information, the process may proceed to step S11 to perform control such as scanning in the next heating stage.

Taking thawing as an example, if it is determined from the return loss information that the temperature of the food has risen from-18 ℃ to-3 ℃ to 0 ℃, the heating power may be reduced or a preset on-off heating mode may be adopted to avoid local overheating of the food due to high-power heating.

In addition, in the case where it is determined that the heating is not ended, the flow may proceed to step S11; in the case where it is determined that heating is finished, the cycle may be skipped and the control may be finished. Therefore, the control flow can be prevented from being continuously executed, and the waste of energy consumption is avoided. It is understood that in the case of updating the heating parameter, the total energy threshold determined according to the heating parameter is also updated, so that the total scanning energy may not be smaller than the total energy threshold any more, and therefore, step S11 may be proceeded to perform the next round of control to avoid that the scanning energy is too large in the next stage to affect the normal operation of the microwave apparatus 100.

In the present embodiment, the microwave apparatus 100 is a semiconductor microwave oven. The microwave sources 110 are semiconductor microwave sources 110, the number of the microwave sources 110 may be 1, 2, 3 or other numbers, and the microwave sources 110 may generate microwave signals of 2.4GHz-2.5 GHz.

In other embodiments, microwave apparatus 100 may include a microwave dryer, a microwave sterilizer, and the like. The specific form of the microwave device 100 is not limited herein.

Referring to fig. 2 again, the microwave apparatus 100 further includes an antenna 130, a heating tube 140, and a side frame 150.

The antenna 130 is used to couple microwaves generated by the microwave source 110 into the cavity of the microwave device 100. It will be appreciated that in other embodiments, the microwaves generated by the microwave source 110 may be coupled into the cavity of the microwave apparatus 100 by other means, such as equivalent magnetron coupling, probe coupling, etc. In the example of fig. 2, the number of antennas 130 is 2. It is understood that the number of antennas 130 may be 1, 3, 4, or other numbers in other examples. The specific number of antennas 130 is not limited herein.

The heat generating pipe 140 may be disposed at the top of the case of the microwave apparatus 100, and the heat generating pipe 140 is used to emit high temperature infrared rays. The controller 120 can control the heating tube 140 to operate independently, and can also control the heating tube 140 to operate synchronously with the microwave source 110. Thus, different operation modes can be realized through the heating tube 140 and the microwave source 110.

The side frame 150 is provided at an inner wall of the microwave apparatus 100. The side frame 150 may be used to hold a tray of the microwave oven. In the example of fig. 2, the number of the side frames 150 is two, and the two side frames 150 are disposed to face each other. One of the side frames 150 is disposed at a first inner wall, and the other side frame 150 is disposed at a second inner wall opposite to the first inner wall.

Referring to fig. 4, in some embodiments, step S12 includes:

step S121: determining the total heating energy in the scanning time period according to the heating parameters;

step S122: and determining a total energy threshold according to the total heating energy.

In some embodiments, the controller 120 is configured to determine a total heating energy over the scan period based on the heating parameter; and for determining a total energy threshold from the total heating energy.

In this way, a determination of the total energy threshold within the scanning period from the heating parameter is achieved. Specifically, in step S121, the total heating energy in the scanning period may be calculated from the heating power and the heating time period in the scanning period. In this way, a determination of the total heating energy within the scanning period from the heating parameters may be achieved. Further, the heating time period within the scanning period may be equal to the time period of the scanning period. In other words, the total heating energy within the scanning period may be calculated from the heating power and the duration of the scanning period.

In step S122, the product of the total heating energy and the preset coefficient may be used as the total energy threshold. Therefore, under the condition that the total scanning energy is smaller than the total energy threshold, the proportion of the total scanning energy to the total heating energy is smaller than the proportionality coefficient, and the influence of scanning on the heating process can be ensured to be small in a proportionality mode, so that the safety and the heating effect of the microwave equipment 100 are ensured.

Further, the range of the preset coefficients is: 1 to 10 percent. For example, the following are: 1%, 2%, 3.2%, 4.1%, 5%, 6.6%, 7%, 7.5%, 8.3%, 9.1%, 10%.

In the present embodiment, the predetermined coefficient is 5%. That is, the total energy threshold is 5% of the total heating energy. Therefore, the influence of scanning on the heating process can be ensured to be small, the condition that the total energy threshold value is difficult to meet due to the fact that the preset coefficient is too small can be avoided, and the control efficiency is improved.

In step S122, the difference between the total heating energy and the preset threshold may also be used as the total energy threshold. Therefore, under the condition that the total scanning energy is smaller than the total energy threshold, the difference between the total heating energy and the total scanning energy is smaller than the total energy threshold, and the influence of scanning on the heating process can be ensured to be smaller in a difference mode, so that the safety and the heating effect of the microwave equipment 100 are ensured.

It is understood that the total energy threshold may be determined in other ways according to the total heating energy, and the specific way is not limited herein.

Referring to fig. 5, in some embodiments, the control method includes:

step S15: and under the condition that the total scanning energy is greater than or equal to the total energy threshold, updating scanning parameters, and determining the total scanning energy in the scanning period according to the scanning parameters.

In some embodiments, the controller 120 is configured to update the scan parameters if the total energy of the scan is greater than or equal to the total energy threshold, and to proceed with the step of determining the total energy of the scan within the scan period based on the scan parameters.

In this way, when the total scanning energy is greater than or equal to the total energy threshold, the scanning parameters are updated to adjust the scanning parameters, so as to ensure that the influence of scanning on the heating process is small when the microwave source 110 performs scanning. It will be appreciated that steps S13 and S15 form a loop, and if the total energy of the scan determined from the scan parameters fails to satisfy the condition of being less than the total energy threshold, the scan parameters are updated until the total energy of the scan determined from the scan parameters satisfies the condition of being less than the total energy threshold.

Referring to fig. 6, in some embodiments, the scan parameter includes a scan power, and step S15 includes:

step S151: the scanning power is reduced within a preset power range.

In some embodiments, the controller 120 is configured to reduce the scan power within a predetermined power range.

Therefore, the scanning parameters are updated by reducing the scanning power, the control is simple, the adjustment is convenient, and the effect of reducing the total scanning energy is better. Specifically, the preset power range may be the same as the range of the scan power. For example, 50% -100% of the maximum output power of the microwave source 110. Therefore, the reduced scanning power is ensured not to exceed the range of the scanning power, and the problems that the updated scanning power is too low, the accuracy of return loss information is low and the cost of a detection device is high are avoided.

Further, the scanning power can be reduced within a preset power range according to the preset adjustment power. Furthermore, the difference between the scanning power before updating and the adjusted power can be used as the updated scanning power within the preset power range. Therefore, the adjustment power is subtracted from the scanning power every time the scanning power is updated, the scanning power is stably reduced according to the numerical value, the scanning power meeting the total energy threshold value is ensured to be as large as possible, and the accuracy of return loss information is ensured to be higher.

Further, the scanning power can be reduced within a preset power range according to a preset adjustment ratio. Furthermore, the product of the scanning power before updating and the adjustment ratio can be used as the updated scanning power within the preset power range. Therefore, the scanning power is multiplied by the adjustment proportion every time the scanning power is updated, so that the scanning power is stably reduced in proportion, the scanning power meeting the total energy threshold value is ensured to be as large as possible, and the accuracy of return loss information is ensured to be higher.

The specific manner of reducing the scan power within the preset power range is not limited herein.

Referring to fig. 7, in some embodiments, the scanning parameters include a total number of scanning frequency points, and step S15 includes:

step S152: and reducing the total number of scanning frequency points.

In some embodiments, the controller 120 is configured to reduce the total number of scanned bins.

Therefore, the total number of the scanning frequency points is reduced to update the scanning parameters, the control is simple, the adjustment is convenient, and the effect of reducing the total scanning energy is better. Similarly, the total number of scanning frequency points can be reduced within a preset range of the total number of scanning frequency points. Therefore, the poor accuracy of return loss information caused by the total number of the scanning frequency points can be avoided.

Similarly, the total number of scanning frequency points of the preset number can be reduced each time, and the total number of scanning frequency points of the preset proportion can also be reduced each time. The specific way of reducing the total number of scanning frequency points is not limited herein.

Referring to fig. 8, in some embodiments, step S152 includes:

step S1521: and increasing the scanning step length in the preset scanning frequency band to reduce the total number of the scanning frequency points.

In some embodiments, the controller 120 is configured to increase the scanning step size within the preset scanning frequency band to decrease the total number of scanning frequency points.

Therefore, the total number of the scanning frequency points is reduced by increasing the scanning step length, so that the scanning frequency points after the total number is reduced are still uniformly distributed in the scanning frequency band, and each scanning frequency point can be uniformly scanned in the scanning frequency band, thereby being beneficial to improving the accuracy of return loss information. It can be understood that, because the scanning frequency band is fixed, the range of the scanning frequency band is also fixed, the larger the scanning step length is, the larger the interval of the scanning frequency points is, and the smaller the total number of the scanning frequency points is. Therefore, the total number of the scanning frequency points can be reduced by increasing the scanning step length in the scanning frequency band.

Referring to fig. 9, in some embodiments, step S152 includes:

step S1522: and reducing the total number of the scanning frequency points according to the preset frequency point priority.

In some embodiments, the controller 120 is configured to reduce the total number of scanned frequency points according to a preset frequency point priority.

Therefore, the total number of the scanning frequency points is reduced through the frequency point priority, the scanning frequency points with higher priority can be preferentially scanned, and the scanning frequency points with lower priority are abandoned, so that the reduction of the scanning effect caused by the reduction of the total number of the scanning frequency points is avoided as much as possible, and the accuracy of return loss information is favorably ensured.

Specifically, the updated scanning frequency points can be determined according to the priority and the preset number of the frequency points, so as to reduce the total number of the scanning frequency points. For example, the scanning frequency points with the preset number with the lowest priority in the frequency point priorities are removed.

And determining the updated scanning frequency points according to the frequency point priority and the preset proportion so as to reduce the total number of the scanning frequency points. For example, the scanning frequency point with the lowest priority in the preset proportion is removed from the frequency point priorities.

The specific manner of reducing the total number of scanned frequency points according to the preset frequency point priority is not limited herein.

Please note that, the scanning power may be reduced within a preset power range, and the total number of scanning frequency points is reduced when the total scanning energy is still not less than the total energy threshold value even if the scanning power is reduced to the minimum within the preset power range; or the total number of scanning frequency points can be reduced firstly, and under the condition that the total scanning frequency points are reduced to the lowest within the range of the preset total scanning frequency points and the total scanning energy still cannot be smaller than the total energy threshold, the scanning power is reduced within the preset power range; and the scanning power can be reduced and the total number of scanning frequency points can be reduced within a preset power range at the same time.

The specific manner of updating the scan parameters is not limited herein.

Embodiments of the present invention further provide a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the steps of the control method of any of the above embodiments.

For example, in the case where the program is executed by a processor, the following are implemented: step S11: acquiring heating parameters and scanning parameters in a scanning time period; step S12: determining a total energy threshold value in a scanning time period according to the heating parameters; step S13: determining total scanning energy in a scanning time period according to the scanning parameters; step S14: under the condition that the total scanning energy is smaller than the total energy threshold, in the process that the microwave device 100 heats in the scanning time period according to the heating parameters, controlling the microwave source 110 to scan in the scanning time period according to the scanning parameters so as to determine return loss information; step S16: and updating the heating parameters according to the return loss information.

In the computer-readable storage medium of this embodiment, when the total scanning energy in the scanning period is smaller than the total energy threshold in the scanning period, the microwave source 110 is controlled to scan to determine the return loss information and update the heating parameter according to the return loss information, so that the influence of the excessive scanning energy on the normal operation of the microwave device 100 can be avoided, and the security and the heating effect of the microwave device 100 can be ensured.

The computer readable storage medium may be disposed in the microwave device 100, or may be disposed in a cloud server, and the microwave device 100 may communicate with the cloud server to obtain the corresponding program.

It will be appreciated that the computer program comprises computer program code. The computer program code may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable storage medium may include: any entity or device capable of carrying computer program code, recording medium, U-disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), software distribution medium, and the like.

The controller 120104 of the microwave device 100 is a single chip, and integrates a processor, a memory, a communication module, and the like. The processor may refer to a processor included in the controller 120104. The Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc.

In the description herein, references to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example" or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.

The logic and/or steps represented in the flowcharts or otherwise described herein, such as an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processing module-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.

It should be understood that portions of embodiments of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.

It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.

In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.

The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art within the scope of the present invention.