A control method for a household appliance, a household appliance, and a control system

Abstract

A control method for a household appliance, a household appliance and a system. The method comprises: acquiring, by a first temperature sensor, a temperature of a first area where a cooking appliance is located, and sending a first signal when the temperature changes by more than a preset value; receiving the first signal, and acquiring, by a second temperature sensor, a temperature of a second area where the cooking appliance is located, wherein the second area is within the range covered by the first area; and controlling a device to control the operation of the household appliance according to the temperature acquired by the second temperature sensor. By using multiple different temperature sensors to detect the temperature of the area where the cooking appliance is located, the interference of external factors is reduced, the temperature detection is more accurate, the heat source can be accurately detected, and the household appliance can be provided with more accurate judgment basis based on the detected temperature, and the degree of intelligence is higher.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and more specifically to a control method, household appliance, and control system for household appliances. Background Technology

[0002] Any object with a temperature above thermodynamic zero will radiate infrared radiation to its surroundings. Infrared temperature sensors use thermopile to receive the far-infrared radiation emitted by the object, and after circuit processing and calculation, the temperature of the object can be measured.

[0003] Currently, some range hoods on the market achieve intelligent control functions by installing a single infrared temperature sensor. These sensors typically use a wide field of view to measure the average temperature of the entire cooktop. However, in actual cooking, the average temperature change on the cooktop is small and easily affected by external objects, leading to inaccurate temperature measurements and causing misjudgments and malfunctions by the range hood. This prevents the range hood from achieving true intelligence.

[0004] In addition, some products achieve intelligent control of the range hood by installing at least two infrared temperature sensors, configured at the factory to be aligned with the heating area. However, in practice, to improve detection accuracy, it is necessary to ensure that the sensors are aligned with the heating area as much as possible, which increases the difficulty and complexity of installing the range hood; furthermore, improper installation will reduce the user experience. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a control method for household appliances. The method includes: acquiring the temperature of a first area where the stove is located using a first temperature sensor, and sending a first signal when the temperature change exceeds a preset value; receiving the first signal and acquiring the temperature of a second area where the stove is located using a second temperature sensor, wherein the second area is within the range covered by the first area; and a control device controlling the operation of the household appliance based on the temperature acquired by the second temperature sensor. By using multiple different temperature sensors in conjunction to detect the temperature of the area where the stove is located, interference from external factors is reduced, temperature detection is more accurate, heat sources can be accurately detected, and more precise judgment criteria can be provided for the household appliance based on the detected temperature, resulting in a higher level of intelligence.

[0006] In one possible embodiment, obtaining the temperature of the second area where the stove is located via a second temperature sensor includes: upon receiving the first signal, controlling the second temperature sensor to begin moving and detecting a heat source; when a heat source is detected, controlling the second temperature sensor to stop moving, at which point the detection range corresponding to the second temperature sensor is the second area; and detecting and obtaining the temperature of the second area via the second temperature sensor. Thus, a movable second temperature sensor can more accurately detect heat sources.

[0007] In one possible embodiment, controlling the second temperature sensor to stop moving when a heat source is detected includes: acquiring the temperature detected by the second temperature sensor during its movement and the corresponding position information of the second temperature sensor; determining the peak value of the temperature change curve and its corresponding position information based on the temperature change curve, where the detection range of the second temperature sensor at this point is the detected heat source; and controlling the second temperature sensor to stop moving at that position based on the corresponding position information. This allows for accurate detection of heat sources.

[0008] In one possible embodiment, the second temperature sensor is controlled to move at a first angle in a first direction and detect a heat source. Preferably, the first angle is 60°.

[0009] In one possible embodiment, the second temperature sensor is controlled to move at a second angle in a second direction and detect the heat source. Preferably, the second angle is 20°.

[0010] In this way, by controlling the second temperature sensor to rotate at different angles in different directions, the sensor can more accurately detect heat sources, stop at a more reasonable position, and detect the temperature of the corresponding area, thus providing accurate judgment for the control of household appliances. Furthermore, it eliminates the need for after-sales service to adjust the installation position of the range hood during installation, reducing installation complexity.

[0011] In one possible embodiment, the first temperature sensor and the second temperature sensor are infrared temperature sensors, and the field of view of the first temperature sensor is greater than that of the second temperature sensor.

[0012] In one possible embodiment, the field of view of the first temperature sensor is 60° and the field of view of the second temperature sensor is 5°.

[0013] In this way, by using infrared temperature sensors with different field of view to work together and detect the temperature of the heat source area, the accuracy of temperature detection is improved.

[0014] In one possible embodiment, the household appliance includes a range hood, and the control device controls the range hood to turn on or off based on temperature changes obtained from a second temperature sensor, or controls the operating mode of the range hood.

[0015] In one possible embodiment, the household appliance includes a stove, and the control device controls the stove to turn off or adjust the stove's heat output based on temperature changes obtained from a second temperature sensor.

[0016] In one possible embodiment, controlling the movement of the second temperature sensor includes controlling at least one motor connected to the second temperature sensor with different rotational directions to rotate, thereby driving the second temperature sensor to rotate. This allows the second temperature sensor to rotate in different directions, improving the accuracy of heat source detection and temperature measurement.

[0017] A household appliance includes a first temperature sensor, a second temperature sensor, and a control device, wherein the control device is configured to perform the aforementioned method.

[0018] A control system for a household appliance includes a first temperature sensor, a second temperature sensor, and a control device, wherein the control device is configured to perform the aforementioned method. Attached Figure Description

[0019] Figure 1 This is a flowchart of a control method according to an embodiment of the present invention;

[0020] Figure 2 This is a structural block diagram of a household appliance according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of a control system applied to a range hood and a cooktop in an embodiment of the present invention;

[0022] Figure 4 This is a logical structure block diagram of a range hood according to an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the first temperature sensor in an embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the structure of the second temperature sensor in an embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the first region and the second region in an embodiment of the present invention. Detailed Implementation

[0026] The embodiments of the present invention can be applied to scenarios where the operation of household appliances needs to be controlled by temperature detection. For example, in a kitchen scenario, a range hood is usually installed above the stove. The temperature sensor can detect the heat source on the stove, such as the temperature of the burner or temperature changes, and determine whether it is necessary to control the range hood to turn on or off, or whether it is necessary to increase the exhaust intensity of the range hood, or whether it is necessary to turn off or adjust the firepower of the stove to prevent dry burning and overflow, etc.

[0027] Combination Figure 1 This invention specifically discloses a control method for household appliances, which includes the following steps:

[0028] S100: The temperature of the first area A1 where the stove 20 is located is obtained through the first temperature sensor, and a first signal is sent when the temperature change is higher than a preset value.

[0029] Reference Figure 2 In a typical kitchen setting, the first temperature sensor 101 can be positioned above the cooktop 20 area to detect the temperature of that area. Here, the range detected by the first temperature sensor 101 is defined by defining a first region A1. The detected temperature is typically the average temperature of that region. Furthermore, the first temperature sensor 101 can be positioned on the range hood 10, or it can be placed elsewhere where the temperature of the cooktop 20 area can be detected.

[0030] When a household appliance, such as a range hood 10, is in standby or operating mode, the first temperature sensor 101 detects the temperature of the cooktop area at a certain frequency, such as 10 Hz. When the detected temperature rises and exceeds a preset value, it means that the burner 30 of the cooktop 20 may be turned on, and the user plans to begin cooking. At this time, the temperature change information detected by the first temperature sensor 101 is sent to the second temperature sensor 102, and the second temperature sensor 102 is activated. The preset value here can be set experimentally.

[0031] S102, receive the first signal, and obtain the temperature of the second area A2 where the stove 20 is located through the second temperature sensor 102, wherein the second area A2 is within the range covered by the first area A1.

[0032] Typically, the second temperature sensor 102 can also be positioned above the cooktop 20 area. After receiving information from the first temperature sensor 101 and being activated, it can be used to detect the temperature of a smaller area within the cooktop 20 area, namely the temperature of the second area A2. Here, the second temperature sensor 102 can be positioned on the range hood 10, or it can be positioned elsewhere where the temperature of the cooktop area can be detected, instead of on the range hood.

[0033] refer to Figure 7 The first region A1 can be the area where the cooktop 20 is located, or it can be smaller than or partially beyond the area where the cooktop 20 is located. The second region A2 is within the area covered by the first region A1, and can be the area where the burner 30 is located, or it can be smaller than or beyond the area where the burner 30 is located. The range of the first region A1 and the second region A2 can be determined according to the field of view of each temperature sensor and the height of the sensor from the cooktop 20. Here, the first region A1 and the second region A2 can be understood as the range that the sensor can detect when the sensor is in a stationary state.

[0034] In one embodiment, the second temperature sensor 102 can be controlled to move or rotate to detect a heat source. Upon receiving a signal from the first temperature sensor 101, the second temperature sensor 102 is activated. Specifically, the second temperature sensor 102 is controlled to begin moving and detecting a heat source; when a heat source is detected, the second temperature sensor 102 is controlled to stop moving. At this point, the detection range corresponding to the second temperature sensor 102 is the second region A2; the temperature of the second region A2 is detected and obtained through the second temperature sensor 102.

[0035] Typically, if a sensor moves from one side of a region to the other and passes a heat source, the detected temperature change will exhibit a trend, that is, the temperature rises from low to high and then falls back down. This trend approximates a parabola. However, this temperature change can also be a trend from high to low or from low to high.

[0036] Specifically, in one embodiment, the method for detecting a heat source can be to detect the temperature at various points within a certain area of ​​the stove 20 and compare these temperature values. When a higher or higher temperature value is found at a certain detection angle, the location corresponding to the temperature sensor can be considered a relatively accurate location of the heat source. Specifically, this includes: acquiring the temperature detected by the second temperature sensor 102 during its movement and the corresponding position information of the second temperature sensor 102; determining the peak value of the curve and its corresponding position information based on the temperature change curve, at which point the detection range corresponding to the second temperature sensor 102 is the detected heat source; and controlling the second temperature sensor 102 to stop moving at that position based on the corresponding position information.

[0037] As mentioned earlier, the second temperature sensor 102 is movable or rotatable. Figure 6 In one embodiment, the method can control the second temperature sensor 102 to move at a first angle in a first direction X and detect the heat source. For example, the first direction X can be the direction of left and right movement with reference to the stove 20, and the first angle of left and right movement is 60°.

[0038] In one embodiment, the method can control the second temperature sensor 102 to move at a second angle in the second direction Y and detect the heat source. For example, the second direction Y can be the direction of back-and-forth movement with reference to the stove 20, and the second angle of back-and-forth movement is 20°.

[0039] Typically, the area where the cooktop 20 is located is an approximately rectangular area. Therefore, the first angle of the sensor can be set to be greater than the second angle, that is, the angle of left-right movement of the sensor can be set to be greater than the angle of forward-backward movement, so as to detect the heat source more accurately.

[0040] In one embodiment, the movement of the second temperature sensor 102 can be controlled by a control drive device 103. The drive device 103 can be a motor with different rotation directions to drive the second temperature sensor to rotate at different angles. For example, the second temperature sensor can be driven to rotate left and right and forward and backward by a single motor, or it can be driven to move left and right by a single motor and forward and backward by a single motor, i.e., a longitudinal rotation motor and a lateral rotation motor.

[0041] S104, the control device 100 controls the operation of the household appliance 1 based on the temperature obtained by the second temperature sensor 102.

[0042] In a specific application scenario, the household appliance 1 is a range hood 10. The control device 100 controls the operation of the range hood 10 based on the temperature changes obtained by the second temperature sensor 102. For example, when the second temperature sensor 102 detects a temperature increase, it means that the user may be preparing to cook or is cooking at a high temperature, so the control device turns on the range hood 10 or increases the exhaust intensity of the range hood; when the temperature decreases, it means that the user may be stopping cooking or cooking at a low temperature, so the control device turns off the range hood or reduces the exhaust intensity of the range hood.

[0043] When the household appliance 1 is a stove 20, the control device 100 controls the stove 20 to turn off or adjust the heat level of the stove 20 based on the temperature changes obtained by the second temperature sensor 102. For example, when the temperature rises and exceeds a threshold, it is possible that the pot is dry-burning or the cooking area is too hot, so the control device turns off the heat or reduces the heat level.

[0044] The specific conditions under which the range hood 10 or the cooktop 20 is controlled can be set according to the actual situation. One implementation method could be to set temperature changes or temperature thresholds, and then execute the control program when the threshold is exceeded.

[0045] In some embodiments, the first temperature sensor 101 and the second temperature sensor 102 are infrared temperature sensors, and the field of view of the first temperature sensor 101 is larger than the field of view of the second temperature sensor 102. The field of view of the infrared temperature sensor is related to the distance and area of ​​the detected region. Under the same distance, the larger the field of view, the larger the area that can be tested.

[0046] In some embodiments, such as Figure 3 The field of view of the first temperature sensor 101 can be 60°, and the field of view of the second temperature sensor 102 can be 5°.

[0047] By using temperature sensors with different field of view to detect temperature changes in larger and smaller areas respectively, the temperature of the heat source can be accurately detected, thus providing a basis for the intelligent control of household appliances such as range hoods or stoves. Furthermore, by using a first temperature sensor in conjunction with a movable second temperature sensor, the heat source can be accurately identified.

[0048] like Figure 2 The present invention also discloses a household appliance 1, including a first temperature sensor 101, a second temperature sensor 102 and a control device 100, wherein the control device 100 is configured to execute the control method described above.

[0049] The following describes the solution using range hood 10 as an example.

[0050] refer to Figure 2 , Figure 3 , Figure 4 and Figure 6 A range hood 10 includes a main body, a first temperature sensor 101 and a second temperature sensor 102 disposed on the main body, and a control device 1001. The first temperature sensor 101 is configured to detect the temperature of a first area A1 where a cooktop 20 is located. The second temperature sensor 102 is configured to detect the temperature of a second area A2 where the cooktop 20 is located, wherein the second area A2 is within the area covered by the first area A1. The control device 1001 is configured to control the operation of the second temperature sensor 102 based on the temperature change of the first area A1 detected by the first temperature sensor 101, and to control the operation of the range hood 10 based on the temperature change of the second area A2 detected by the second temperature sensor 102.

[0051] In some embodiments, the range hood 10 may also include a movable or rotatable second temperature sensor 102. Specifically, this can be achieved by including a drive device 103 connected to the second temperature sensor 102, used to drive the second temperature sensor 102 to move or rotate according to instructions from the control device.

[0052] In one embodiment, the drive device 103 may be a horizontal or vertical rotation motor.

[0053] Specifically, such as Figure 3 , 4As shown in Figure 5, the lateral rotation motor can be a first drive unit 1031, used to drive the second temperature sensor 102 to move at a first angle in a first direction X according to the instructions of the control device 1001. For example, the first direction X can be a direction of left and right movement with the axis a perpendicular to the stove 20 as a reference, which can be understood as a direction of left and right movement with the stove 20 as a reference. Starting from axis a, the first drive unit 1031 can drive the second temperature sensor 102 to move 30° to the left and 30° to the right, for a total of 60°.

[0054] like Figure 6 As shown, the longitudinal rotation motor can be a second drive unit 1032, used to drive the second temperature sensor 102 to move at a second angle in the second direction Y according to the instructions of the control device 100. For example, the second direction Y can be a direction of vertical movement with the axis y parallel to the stove 20 as a reference, which can be understood as a direction of vertical movement with the stove 20 as a reference. Starting from axis b, the second drive unit 1032 can drive the second temperature sensor 102 to move 10° vertically and 10° vertically, for a total of 20°.

[0055] like Figure 4-6 The control device 1001 can be connected to the first drive unit 1031 and the second drive unit respectively. Alternatively, the control device 1003 can be connected to the first drive unit 1031 to control its operation, and the control device 1004 can be connected to the second drive unit 1032 to control its operation. The control device 1003 and the control device 1004 can be connected, and then the control device 1004 can be connected to the control device 1001 of the range hood. Here, the control device 1003 and the control device 1004 can be microcontrollers, which can accurately control the drive unit and the temperature sensor without increasing the internal space of the range hood and reducing the complexity of the internal wiring of the range hood.

[0056] The first driving unit 1031 and the second driving unit 1032 can be set to either one or both.

[0057] In some embodiments, the second region A2 may be the detection range corresponding to when the second temperature sensor 102 stops moving.

[0058] In some cases, the first temperature sensor 101 or the second temperature sensor 102 may be located in the middle of the body, and this location corresponds to the middle of the first region.

[0059] The first temperature sensor 101 and the second temperature sensor 102 are infrared sensors, and the field of view (FOV) of the first temperature sensor is greater than that of the second temperature sensor. Preferably, the FOV of the first temperature sensor is 60° and the FOV of the second temperature sensor is 5°.

[0060] The present invention also discloses a control system for household appliances, including a first temperature sensor, a second temperature sensor, and a control device, wherein the control device is configured to execute the control method described above.

[0061] The following explanation uses the range hood and stove linkage system as an example.

[0062] Reference Figure 3 The system includes a range hood 10 and a cooktop 20, both of which can control their respective working status and mode based on the detection parameters of the temperature detection device.

[0063] As mentioned above, the range hood 10 includes a first temperature sensor 101, a second temperature sensor 102, and a control device 1001 connected to both. The first temperature sensor 101 has a field of view (FOV) of 60°, which can detect temperature changes in the area where the cooktop 20 is located in real time, and the detection range of the first temperature sensor 101 can also cover the entire cooktop surface.

[0064] The second temperature sensor 102 has a field of view (FOV) of 5°. It can be activated based on the temperature detected by the first temperature sensor 101 and can rotate to detect temperature changes in a small area, such as the location of the heat source, burner, or cookware. Both temperature sensors can be fixedly installed in the center of the range hood 10.

[0065] Combination Figure 6 The second temperature sensor 102 is driven by two motors. The control device 1001 or 1004 can control one motor to rotate 30° left and right and the other motor to rotate 10° forward and backward to adjust the detection range of the second temperature sensor.

[0066] The cooktop 20 includes a burner 30 and a control device 1002, wherein the control device 1002 can control the operation of the cooktop 20 based on the temperature detected by the second temperature sensor 102.

[0067] The system's workflow is as follows:

[0068] When the range hood 10 is in standby or working mode, the first temperature sensor 101 detects the temperature of the countertop where the cooktop 20 is located at a frequency of 10Hz, and performs filtering calculations on the temperature data to save it as the current temperature data.

[0069] When the first temperature sensor 101 detects that the temperature of the cooktop 20 surface has risen above a preset value, the control device 1003 of the first temperature sensor 101 sends the temperature change information of the cooktop 20 surface to the control device 1004 of the second temperature sensor 102. The control device 1004 of the second temperature sensor 102 controls the movement of two motors. The motors drive the second temperature sensor 102 to perform temperature detection scanning of the cooktop 20 surface at 30° left and right and 10° front and back. When a heat source is detected, the motor movement stops, the sensor position is fixed, and the temperature of the heat source is detected.

[0070] The second temperature sensor 102 continuously detects the temperature of the heat source and calculates the temperature change curve based on the detected temperature. It then notifies the control device 1001 of the range hood 10 to control the on / off operation and fan speed adjustment, and the control device 1002 of the stove 20 to control the flameout and adjust the flame intensity.

[0071] The aforementioned solution allows for accurate location and precise temperature measurement of heat sources, providing a reliable basis for the intelligent operation of household appliances such as range hoods and cooktops. Furthermore, it reduces the complexity and difficulty of installing appliances, especially range hoods, resulting in a better user experience.

[0072] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

[0073] Furthermore, the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0074] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0075] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0076] In the several embodiments provided in this application, it should be understood that the disclosed systems and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed.

[0077] The units described as separate components may or may not be physically separate. 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 can be selected to achieve the purpose of the embodiments of the present invention, depending on actual needs.

[0078] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0079] 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 the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods of the various embodiments of the present invention.

Claims

1. A control method for household appliances, characterized in that, The method includes: The temperature of the first area where the stove is located is obtained by the first temperature sensor, and a first signal is sent when the temperature change is higher than a preset value; The first signal is received, and the temperature of the second area where the stove is located is obtained through the second temperature sensor, wherein the second area is within the range covered by the first area; The control device controls the operation of household appliances based on the temperature obtained from the second temperature sensor. The step of obtaining the temperature of the second area where the stove is located through the second temperature sensor includes: Upon receiving the first signal, the second temperature sensor is controlled to begin moving and detecting the heat source; When a heat source is detected, the second temperature sensor is controlled to stop moving. At this time, the detection range corresponding to the second temperature sensor is the second region. The temperature of the second region is detected and acquired by a second temperature sensor.

2. The method as described in claim 1, characterized in that, The step of controlling the second temperature sensor to stop moving when a heat source is detected includes: acquiring the temperature detected by the second temperature sensor during its movement and the corresponding position information of the second temperature sensor; determining the peak value of the curve and its corresponding position information based on the change curve of the detected temperature, wherein the detection range of the second temperature sensor at this time is the detected heat source; and controlling the second temperature sensor to stop moving at that position based on the corresponding position information.

3. The method as described in claim 1, characterized in that, include: The second temperature sensor is controlled to move at a first angle in a first direction and to detect the heat source.

4. The method as described in claim 3, characterized in that, The first angle is 60°.

5. The method as described in claim 1 or 3, characterized in that, include: The second temperature sensor is controlled to move at a second angle in a second direction and to detect the heat source.

6. The method as described in claim 5, characterized in that, The second angle is 20°.

7. The method according to any one of claims 1-6, characterized in that, The first and second temperature sensors are infrared temperature sensors, and the field of view of the first temperature sensor is greater than that of the second temperature sensor.

8. The method as described in claim 7, characterized in that, The field of view of the first temperature sensor is 60°, and the field of view of the second temperature sensor is 5°.

9. The method as described in claim 1, characterized in that, The household appliance includes a range hood. The control device controls the range hood to turn on or off based on the temperature changes obtained from the second temperature sensor, or controls the operating mode of the range hood.

10. The method as described in claim 1 or 9, characterized in that, The household appliance includes a stove, and the control device controls the stove to turn off or adjust the firepower based on the temperature changes obtained by the second temperature sensor.

11. The method as described in claim 1, characterized in that, The control of the movement of the second temperature sensor includes controlling at least one motor connected to the second temperature sensor to rotate in a different direction of rotation, thereby causing the second temperature sensor to rotate.

12. A household appliance, characterized in that, The device includes a first temperature sensor, a second temperature sensor, and a control device, wherein the control device is configured to perform the method as described in any one of claims 1-11.

13. A control system for household appliances, characterized in that, The device includes a first temperature sensor, a second temperature sensor, and a control device, wherein the control device is configured to perform the method as described in any one of claims 1-11.

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