Slip pot detection method, range hood and stove linkage device and range hood and stove linkage system

Abstract

The invention provides a pan slipping detection method and a range hood and stove linkage device and system.The pan slipping detection method comprises the steps that M current friction force corresponding to M first measuring points on the pan bottom of a current pan is obtained, and target preset friction force corresponding to the current pan is obtained, and based on the target preset friction force and the M current friction forces, determining whether the current cookware on the cooker slips or not. Whether pot slipping occurs is judged through the friction force, the pot slipping detection method is simple and reliable, the accuracy of pot slipping detection is improved, and the use safety of a user is guaranteed; meanwhile, the cooker and the range hood are linked through the pan slipping detection method, a series of safe handling operations after pan slipping of the cookware can be intelligently achieved, and safe and reliable products are provided for users.

Description

Technical Field

[0001] This disclosure relates to the field of smart home appliance technology, and in particular to a method for detecting a slippery pot, a range hood and stove linkage device and system. Background Technology

[0002] As gas stoves become common in ordinary households, the cooking process, which requires a lot of water, such as steaming, boiling, and stewing, often results in the pan slipping, causing it to tip over and spill cooking liquids, which can lead to injuries. In addition, the spilled cooking liquids can contaminate the burner head, clog the burner holes, reduce combustion efficiency, and are difficult to clean. Furthermore, they may extinguish the burner flame, and if the thermocouple fails, it can cause a gas leak, which is extremely dangerous.

[0003] Existing technologies include detecting pan slippage through sound, which is costly and susceptible to interference from the external environment, and the accuracy of the detection needs to be improved.

[0004] Therefore, there is an urgent need to improve the existing pan slip detection technology. Summary of the Invention

[0005] The technical problem to be solved by this disclosure is to overcome the shortcomings of existing pan slip detection methods, such as high detection cost, susceptibility to external environmental interference, and low detection accuracy, and to provide a pan slip detection method, a range hood and stove linkage device and system.

[0006] This disclosure solves the above-mentioned technical problems through the following technical solution:

[0007] Firstly, a method for detecting pot slippage is provided, employing a range hood and cooktop linkage device, wherein the range hood and cooktop linkage device includes a cooktop, and the method for detecting pot slippage includes:

[0008] Obtain the M current friction forces corresponding to the M first measurement points on the bottom of the pot;

[0009] Where M is greater than or equal to 3 and is a positive integer;

[0010] Obtain the target preset friction force corresponding to the current cookware;

[0011] Based on the target preset friction force and the M current friction forces, it is determined whether the current pot on the stove is slipping.

[0012] Optionally, the step of obtaining the target preset friction force corresponding to the current cookware includes:

[0013] Obtain N distance values ​​from N second measurement points on the outer surface of the current cookware to the horizontal plane of the stove;

[0014] Wherein, N is greater than or equal to 3 and is a positive integer, the N second measurement points are located on the same straight line at their respective projection points on the horizontal plane of the stove, and the actual distance between each projection point is greater than the preset distance value.

[0015] Based on the N distance values, obtain the current circular plane area corresponding to the N second measurement points;

[0016] The target preset friction force is obtained based on the current circular plane area.

[0017] Optionally, the step of obtaining the target preset friction force based on the current circular plane area includes:

[0018] From the pre-established cookware library, select the historical static friction force corresponding to the historical circular plane area that is the same as the current circular plane area as the target preset friction force;

[0019] The cookware library includes the historical static friction force corresponding to the historical circular plane area of ​​several historical cookware.

[0020] Optionally, the step of determining whether the current pot on the stove is slipping based on the target preset friction force and the M current friction forces includes:

[0021] If all M current friction forces are greater than the target preset friction force, then it is determined that the current cookware has slipped.

[0022] Optionally, the step of determining whether the current pot on the stove is slipping based on the target preset friction force and the M current friction forces includes:

[0023] If at most one of the M current friction forces is greater than the target preset friction force, then it is determined that the current cookware has not slipped, and the risk of slipping is low.

[0024] Optionally, the step of determining whether the current pot on the stove is slipping based on the target preset friction force and the M current friction forces includes:

[0025] If at least one and at most M-1 of the M current friction forces are greater than the target preset friction force, then it is determined that the current cookware will slip, and the risk of slipping is high.

[0026] Optionally, the method for detecting a slippery pot further includes:

[0027] If it is determined that the current cookware has slipped, a first adjustment signal is sent to the stove to adjust the stove to turn off the heat;

[0028] And / or, if it is determined that the current cookware has slipped, a prompt message is triggered to remind that the cookware has slipped;

[0029] And / or, the range hood and stove linkage device further includes a range hood, and the pan slip detection method further includes:

[0030] If it is determined that the current cookware has slipped, a second adjustment signal is sent to the range hood to adjust the range hood to its maximum airflow.

[0031] Secondly, a range hood and stove linkage device is provided, the range hood and stove linkage device includes a stove, and the range hood and stove linkage device uses the above-described pot slip detection method to detect the current pot slippage on the stove.

[0032] Optionally, the range hood and stove linkage device also includes a range hood;

[0033] And / or, the cooktop is equipped with a friction sensor, which is used to detect the current friction force corresponding to a first measuring point on the bottom of the cooktop;

[0034] And / or, the cooktop is equipped with a distance sensor, which is used to detect the distance value between a second measuring point on the outer side of the current cookware and the horizontal plane of the cooktop.

[0035] Thirdly, a range hood and cooktop linkage system is provided, the range hood and cooktop linkage system including cookware and the aforementioned range hood and cooktop linkage device.

[0036] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this disclosure.

[0037] The positive and progressive effects of this disclosure are as follows:

[0038] This disclosed method for detecting pot slippage, along with a range hood and cooktop linkage device and system, acquires M current frictional forces corresponding to M first measurement points on the bottom of the pot, and obtains a target preset frictional force corresponding to the pot. Based on the target preset frictional force and the M current frictional forces, it determines whether the pot on the cooktop has slipped. This method of determining pot slippage through friction is simple and reliable, improving the accuracy of pot slippage detection and ensuring user safety. Furthermore, the method links the cooktop and range hood, intelligently implementing a series of safety procedures after pot slippage, providing users with a safe and reliable product. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the first process of the pan slip detection method provided in Embodiment 1 of this disclosure;

[0040] Figure 2 This is a schematic diagram of the second process of the pan slip detection method provided in Embodiment 1 of this disclosure;

[0041] Figure 3 This is a schematic diagram of the third process of the pan slip detection method provided in Embodiment 1 of this disclosure;

[0042] Figure 4 This is a schematic diagram of the fourth process of the pan slip detection method provided in Embodiment 1 of this disclosure;

[0043] Figure 5 This is a schematic diagram of the fifth process of the pan slip detection method provided in Embodiment 1 of this disclosure;

[0044] Figure 6 This is a schematic diagram of the sixth process of the pan slip detection method provided in Embodiment 1 of this disclosure;

[0045] Figure 7 This is a schematic diagram of the seventh process of the pan slip detection method provided in Embodiment 1 of this disclosure;

[0046] Figure 8 This is a schematic diagram showing the sensor placement location in the range hood and stove linkage device provided in Embodiment 2 of this disclosure. Detailed Implementation

[0047] The present disclosure is further illustrated below by way of embodiments, but the present disclosure is not limited to the scope of the embodiments described herein.

[0048] The prefixes such as "first" and "second" used in this disclosure are merely for distinguishing different descriptive objects and do not limit the position, order, priority, quantity, or content of the described objects. The use of ordinal numbers and other prefixes used to distinguish descriptive objects in this disclosure does not constitute a limitation on the described objects. The description of the described objects is given in the claims or the context of the embodiments, and should not constitute an unnecessary limitation due to the use of such prefixes. Furthermore, in the description of this embodiment, unless otherwise stated, "multiple" means two or more.

[0049] Example 1

[0050] This embodiment provides a method for detecting pot slippage, which utilizes a range hood and cooktop linkage device. The range hood and cooktop linkage device includes a cooktop, such as... Figure 1 As shown, the method for detecting a slippery pan includes:

[0051] S1. Obtain the M current friction forces corresponding to the M first measurement points on the bottom of the pot.

[0052] S2. Obtain the target preset friction force corresponding to the current cookware.

[0053] S3. Determine whether the pot on the stove is slipping based on the target preset friction force and M current friction forces.

[0054] The cookware currently in use refers to the cookware that is currently placed on the stove.

[0055] For the same object on an inclined plane, static friction is usually greater than kinetic friction. Static friction is the frictional force acting on an object when it remains stationary on an inclined plane, and its maximum value is: F_s = mu_s * N;

[0056] Where mu_s is the static friction coefficient (usually greater than the dynamic friction coefficient (mu_k), and N is the normal force (the force perpendicular to the inclined plane).

[0057] Kinetic friction is the frictional force experienced by an object when it slides on an inclined plane. Its value is: F_k = mu_k * N; where mu_k is the coefficient of kinetic friction (usually less than the coefficient of static friction (mu_s)) and N is the normal force (the force perpendicular to the inclined plane).

[0058] The normal force (N) on the same object on the same inclined plane is the same because it is determined by the object's weight and the angle of the inclined plane. Since mu_s > mu_k, the maximum value of static friction F_smax is always greater than the kinetic friction F_k.

[0059] The preset friction force is the maximum value of static friction force, and the target preset friction force is the maximum value of static friction force corresponding to the current cookware. Therefore, it is possible to determine whether the cookware is slipping based on the target preset friction force and the M current friction forces of the cookware.

[0060] Specifically, there are at least three first measurement points on the bottom of the pot, meaning M is greater than or equal to three and is a positive integer. For example, the number of first measurement points can be related to the number of branches on the stove's pot support. Specifically, the current friction force can be measured by friction sensors installed on the stove's pot support; therefore, the number of friction sensors is at least three, consistent with the number of first measurement points.

[0061] Friction force sensors include contact and non-contact types. Contact types can be strain gauge sensors, while non-contact types can be fiber optic sensors, etc.

[0062] For contact-type friction sensors, the friction sensor is preferably positioned on the inner slope of the pot support bracket on the stovetop, at the end furthest from the center of the burner. This ensures that regardless of whether the pot is flat-bottomed or round-bottomed, the outer surface of the pot bottom contacts the friction sensor to form a contact point, which is the first measurement point. Alternatively, the friction sensor can be positioned at other locations on the inner slope of the pot support bracket, ensuring contact between the outer surface of the pot bottom and the friction sensor. Similarly, this contact point is also the first measurement point. For example, if friction sensors are placed on each branch of the pot support, at least three branches are needed to ensure the pot rests stably on the stovetop. Therefore, there should also be at least three first measurement points corresponding to the friction, located on each branch of the pot support and on the same circumference. When there are four branches of the pot support, the friction sensor can be placed on each branch, resulting in four first measurement points; alternatively, the friction sensor can be placed on three of the four branches, resulting in three first measurement points. The more first measurement points are set, the more friction sensors are required, the more accurate the detection, but the higher the detection cost. After verification, 3 friction sensors (corresponding to 3 first measurement points) can meet the detection accuracy requirements.

[0063] The non-contact friction sensor can be set at the end of the inner inclined surface of the pot support plate, away from the center of the stove head. It can be at the middle of the inner inclined surface of the plate, or at any position between the middle and the end position. It does not need to be on the same circumference. As long as it can detect the current friction force between the outer surface of the pot bottom and the pot support, it is necessary to ensure that the outer surface of the pot bottom contacts the pot support to form a contact point, which is the first measurement point.

[0064] This disclosure does not impose specific restrictions on the location of the first measuring point, as long as it can detect the current frictional force between the bottom of the pot and the pot support.

[0065] The pot slip detection method in this embodiment obtains M current friction forces corresponding to M first measurement points on the bottom of the pot, and obtains a target preset friction force corresponding to the pot. Based on the target preset friction force and the M current friction forces, it determines whether the pot on the stove has slipped. This method of determining whether pot slippage has occurred by using friction force is simple and reliable, improves the accuracy of pot slippage detection, and ensures user safety.

[0066] In an alternative implementation, such as Figure 2 As shown, step S2 above includes:

[0067] S21. Obtain the N distance values ​​from the N second measurement points on the outer side of the current pot to the horizontal plane of the stove.

[0068] Where N is greater than or equal to 3 and is a positive integer, the projection points of the N second measurement points on the horizontal plane of the stove are located on the same straight line, and the actual distance between each projection point is greater than the preset distance value.

[0069] S22. Obtain the current circular plane area corresponding to N second measurement points based on N distance values.

[0070] S23. Obtain the target preset friction force based on the current circular plane area.

[0071] Specifically, the distance between a second measuring point on the outer side of the cookware and the horizontal plane of the cookware can be detected by a distance sensor installed on the cookware.

[0072] The distance sensor can be placed outside the cooktop, but it needs to be unobstructed to ensure that it can detect the distance between the cooktop and the outer surface of the cookware. That is, the distance between the second measuring point on the outer surface of the cookware and the horizontal plane of the cooktop, which is the horizontal plane where the distance sensor is located.

[0073] The distance sensor can also be installed inside the cooktop, but it needs to be protected from obstructions to ensure it can detect the distance between the sensor and the outer surface of the cookware. Specifically, it measures the distance from a second measuring point on the outer surface of the cookware to the horizontal plane of the cooktop, which is the same horizontal plane where the distance sensor is located.

[0074] The three points will form a circular area, therefore, the current circular plane area can be obtained through the second measurement point. There are at least 3 second measurement points on the outer surface of the cookware, that is, N is greater than or equal to 3 and is a positive integer. Therefore, the number of distance sensors is set to at least 3, which is consistent with the number of second measurement points.

[0075] Multiple distance sensors should be on the same horizontal plane. If the center of the stove is taken as the center, then all distance sensors are located on the same straight line on the same horizontal plane, with different distances from the center. The positional interval between each distance sensor is greater than a preset interval, meaning the set positions change sequentially. Taking three distance sensors as an example, one can be set near the center, one away from the center, and one in the center. This allows for the detection of the distance values ​​from the horizontal plane of the stove at three locations: near the bottom of the pot, away from the bottom of the pot, and in the center of the outer side of the pot. Based on these three distance values, the current circular plane area corresponding to the three second measurement points is obtained, and then the target preset friction force is obtained based on the current circular plane area.

[0076] The pot slip detection method of this embodiment obtains N distance values ​​from N second measuring points on the outer surface of the pot to the horizontal plane of the stove. Based on the N distance values, the area of ​​the current circular plane corresponding to the N second measuring points can be obtained. Then, based on the current circular plane area, a target preset friction force can be obtained. Finally, based on the target preset friction force and M current friction forces, it is determined whether the pot on the stove has slipped. This pot slip detection method is simple and reliable, improves the accuracy of pot slip detection, and ensures user safety.

[0077] In an alternative implementation, such as Figure 3 As shown, step S23 above includes:

[0078] S231. Select the historical static friction force corresponding to the historical circular plane area with the same area as the current circular plane from the pre-established cookware library as the target preset friction force.

[0079] The cookware library includes the historical static friction force corresponding to the historical circular plane area of ​​several historical cookware.

[0080] The historical static friction force corresponding to the historical circular plane area of ​​several historical cookwares can be obtained through experimental statistics, thus forming a cookware library.

[0081] The pot slip detection method of this embodiment selects the historical static friction force corresponding to a historical circular plane area with the same area as the current circular plane from the pot library as the target preset friction force. This allows for quick determination of the target preset friction force corresponding to the current pot, and based on the target preset friction force and M current friction forces, it determines whether the current pot on the stove has slipped. This pot slip detection method is simple and reliable, improves the accuracy of pot slip detection, and ensures user safety.

[0082] In an alternative implementation, such as Figure 4 As shown, step S3 above includes:

[0083] S31. If all M current friction forces are greater than the target preset friction force, then it is determined that the current pot has slipped.

[0084] In an alternative implementation, such as Figure 4 As shown, step S3 above includes:

[0085] S32. If at most one of the M current friction forces is greater than the target preset friction force, then it is determined that the current pot has not slipped and the risk of slipping is low.

[0086] In an alternative implementation, such as Figure 4 As shown, step S3 above includes:

[0087] S33. If at least one and at most M-1 of the current friction forces are greater than the target preset friction force, then it is determined that the current cookware will slip, and the risk of slipping is high.

[0088] In an alternative implementation, if it is determined that the cookware has slipped, such as Figure 5 As shown, the method for detecting a slippery pan also includes:

[0089] S4. Send the first adjustment signal to the stove to adjust the stove to turn off.

[0090] If the cookware has already slipped off the stove, turn it off to prevent the cooking liquid from extinguishing the gas flame and causing a gas leak. Therefore, you need to turn off the stove immediately to avoid a continued gas leak.

[0091] The pot slip detection method of this embodiment links the stove and the pot together, and can intelligently realize a series of safety handling operations after the pot slips, providing users with a safe and reliable product.

[0092] In an alternative implementation, if it is determined that the cookware has slipped, such as Figure 6 As shown, the method for detecting a slippery pan also includes:

[0093] S5. Trigger a notification message to remind you that the pot has slipped.

[0094] If the cookware has already slipped, a notification will be sent to the user, which can be a voice announcement or a buzzer. This disclosure does not limit the type of notification message.

[0095] In an optional embodiment, the range hood and cooktop linkage device further includes a range hood; if it is determined that the cookware has slipped, such as... Figure 7 As shown, the method for detecting a slippery pan also includes:

[0096] S6. Send a second adjustment signal to the range hood to adjust the range hood to its maximum airflow.

[0097] Generally speaking, when a cookware slips, the cooking liquid in the pot will extinguish the open flame of the gas, leading to a gas leak. It is necessary to turn off the stove immediately to prevent the gas leak from continuing. At the same time, turn the range hood to the maximum speed to quickly remove the leaked gas and ensure user safety.

[0098] The pot slip detection method of this embodiment links the stove, pot and range hood, and can intelligently realize a series of safety handling operations after the pot slips, providing users with a safe and reliable product.

[0099] Example 2

[0100] This embodiment provides a stove-range cooker linkage device, which includes a cooker. The stove-range cooker linkage device uses the pot slip detection method in Embodiment 1 to detect the current pot slippage on the cooker.

[0101] In an optional embodiment, the range hood and stove linkage device also includes a range hood.

[0102] In one alternative embodiment, the cooktop is equipped with a friction sensor for detecting the current friction force at a first measuring point on the bottom of the cooktop.

[0103] Specifically, M friction sensors are set to detect the M current friction forces corresponding to the M first measurement points on the bottom of the pot. The number of friction sensors is the same as the number of measurement points, and M is greater than or equal to 3 and is a positive integer.

[0104] Friction force sensors include contact and non-contact types. Contact types can be strain gauge sensors, while non-contact types can be fiber optic sensors, etc.

[0105] For contact-type sensors, the sensor is preferably placed on the inclined surface inside the corner piece of the cooktop's pot support, at the end furthest from the center of the burner head. This ensures that the outer bottom of the pot, whether flat-bottomed or round-bottomed, makes contact with the sensor. For example, friction sensors can be placed on each branch of the pot support. To ensure the pot rests stably on the cooktop, the pot support must have at least three branches. Therefore, there should be at least three friction measurement points, located on each branch of the pot support and on the same circumference. When the pot support has four branches, friction sensors can be placed on each branch, resulting in four measurement points, or three of the four branches can be used, resulting in three measurement points. More measurement points require more friction sensors, leading to more accurate detection, but also higher costs. Verification has shown that three friction sensors (corresponding to three primary measurement points) are sufficient to meet the required accuracy.

[0106] The non-contact friction sensor can be set at the end of the inner inclined surface of the pot support plate, away from the center of the stove head. It can be at the middle of the inner inclined surface of the plate, or at any position between the middle and the end position. It does not need to be on the same circumference. As long as it can detect the current friction force between the outer surface of the pot bottom and the pot support, it is necessary to ensure that the outer surface of the pot bottom contacts the pot support to form a contact point, which is the first measurement point.

[0107] This disclosure does not restrict the placement of the friction sensor, as long as it can detect the current friction between the bottom of the pot and the pot support.

[0108] In an optional embodiment, the cooktop is equipped with a distance sensor for detecting the distance between a second measuring point on the outer side of the cookware and the horizontal plane of the cooktop.

[0109] Specifically, N distance sensors are set up to detect the N distance values ​​between the N second measurement points on the outer side of the current pot and the horizontal plane of the stove. The number of distance sensors is the same as the number of measurement points, and N is greater than or equal to 3 and is a positive integer.

[0110] The distance sensor can be placed outside the cooktop, but it needs to be unobstructed to ensure that it can detect the distance between the cooktop and the outer surface of the cookware. That is, the distance between the measuring point on the outer surface of the cookware and the horizontal plane of the cooktop, which is the horizontal plane where the distance sensor is located.

[0111] The distance sensor can also be installed inside the cooktop, but it needs to be protected from obstructions to ensure it can detect the distance between the sensor and the outside of the cookware. Specifically, it measures the distance from the measurement point on the outside of the cookware to the horizontal plane of the cooktop, which is the same horizontal plane where the distance sensor is located.

[0112] Multiple distance sensors should be on the same horizontal plane. If the center of the stove is taken as the center, then all distance sensors are located on the same straight line on the same horizontal plane, with different distances from the center. The positional interval between each distance sensor is greater than a preset interval, meaning the set positions change sequentially. Taking three distance sensors as an example, one can be set near the center, one away from the center, and one in the center. This allows for the detection of the distance values ​​from the horizontal plane of the stove at three locations: near the bottom of the pot, away from the bottom of the pot, and in the center of the outer side of the pot. Based on these three distance values, the current circular plane area corresponding to the three second measurement points is obtained, and then the target preset friction force is obtained based on the current circular plane area.

[0113] like Figure 8 As shown, the friction sensor is located on the corner plate of the pot support, and the distance sensor is located inside the stove.

[0114] The range hood and cooktop linkage device in this embodiment uses the pot slip detection method in Embodiment 1 to determine whether the pot on the cooktop has slipped. This pot slip detection method is simple and reliable, improves the accuracy of pot slip detection, and ensures user safety. At the same time, the range hood and cooktop linkage device links the cooktop and the range hood, and can intelligently realize a series of safety handling operations after the pot slips, providing users with a safe and reliable product.

[0115] Example 3

[0116] This embodiment provides a range hood and cooktop linkage system, which includes cookware and the range hood and cooktop linkage device in Embodiment 2.

[0117] The range hood and cooktop linkage system may also include other components, such as a communication module and a cooktop status acquisition module. The communication module can communicate with the control circuit boards inside the cooktop and the range hood respectively. The cooktop status acquisition module can acquire the status of the cooktop, such as on and off signals, through the communication module, and send the cooktop status to the control circuit board inside the range hood through the communication module to realize the linkage control of the range hood and cooktop.

[0118] The range hood and cooktop linkage system of this embodiment includes a cookware and the range hood and cooktop linkage device of Embodiment 2. It acquires M current friction forces corresponding to M first measurement points on the bottom of the cookware, and obtains a target preset friction force corresponding to the cookware. Based on the target preset friction force and the M current friction forces, it determines whether the cookware on the cooktop has slipped. This slip-out detection method is simple and reliable, improving the accuracy of slip-out detection and ensuring user safety. Simultaneously, the range hood and cooktop linkage system links the cooktop and range hood, intelligently implementing a series of safety procedures after the cookware slips, providing users with a safe and reliable product.

[0119] While specific embodiments of this disclosure have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this disclosure is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this disclosure, but all such changes and modifications fall within the scope of protection of this disclosure.

Claims

1. A method for detecting a slippery pot, characterized in that, The application of a range hood and cooktop linkage device, wherein the range hood and cooktop linkage device includes a cooktop, and the method for detecting a slipping pot includes: Obtain the M current friction forces corresponding to the M first measurement points on the bottom of the pot; Where M is greater than or equal to 3 and is a positive integer; Obtain the target preset friction force corresponding to the current cookware; Based on the target preset friction force and the M current friction forces, it is determined whether the current pot on the stove is slipping.

2. The method for detecting slippage in a pot according to claim 1, characterized in that, The step of obtaining the target preset friction force corresponding to the current cookware includes: Obtain N distance values ​​from N second measurement points on the outer surface of the current cookware to the horizontal plane of the stove; Wherein, N is greater than or equal to 3 and is a positive integer, the N second measurement points are located on the same straight line at their respective projection points on the horizontal plane of the stove, and the actual distance between each projection point is greater than the preset distance value. Based on the N distance values, obtain the current circular plane area corresponding to the N second measurement points; The target preset friction force is obtained based on the current circular plane area.

3. The method for detecting slippage in a pot according to claim 2, characterized in that, The step of obtaining the target preset friction force based on the current circular plane area includes: From the pre-established cookware library, select the historical static friction force corresponding to the historical circular plane area that is the same as the current circular plane area as the target preset friction force; The cookware library includes the historical static friction force corresponding to the historical circular plane area of ​​several historical cookware.

4. The method for detecting slippage in a pot according to claim 1, characterized in that, The step of determining whether the current pot on the stove is slipping based on the target preset friction force and the M current friction forces includes: If all M current friction forces are greater than the target preset friction force, then it is determined that the current cookware has slipped.

5. The method for detecting slippage in a pot according to claim 1, characterized in that, The step of determining whether the current pot on the stove is slipping based on the target preset friction force and the M current friction forces includes: If at most one of the M current friction forces is greater than the target preset friction force, then it is determined that the current cookware has not slipped, and the risk of slipping is low.

6. The method for detecting slippage in a pot according to claim 1, characterized in that, The step of determining whether the current pot on the stove is slipping based on the target preset friction force and the M current friction forces includes: If at least one and at most M-1 of the M current friction forces are greater than the target preset friction force, then it is determined that the current cookware will slip, and the risk of slipping is high.

7. The method for detecting slippage in a pot according to claim 4, characterized in that, The method for detecting a slippery pot also includes: If it is determined that the current cookware has slipped, a first adjustment signal is sent to the stove to adjust the stove to turn off the heat; And / or, if it is determined that the current cookware has slipped, a prompt message is triggered to remind that the cookware has slipped; And / or, the range hood and stove linkage device further includes a range hood, and the pan slip detection method further includes: If it is determined that the current cookware has slipped, a second adjustment signal is sent to the range hood to adjust the range hood to its maximum airflow.

8. A range hood and stove linkage device, characterized in that, The range hood and stove linkage device includes a stove, and the range hood and stove linkage device uses the pot slip detection method as described in any one of claims 1-7 to detect the current pot slippage on the stove.

9. The range hood and stove linkage device according to claim 8, characterized in that, The range hood and stove linkage device also includes a range hood; And / or, the cooktop is equipped with a friction sensor, which is used to detect the current friction force corresponding to a first measuring point on the bottom of the cooktop; And / or, the cooktop is equipped with a distance sensor, which is used to detect the distance value between a second measuring point on the outer side of the current cookware and the horizontal plane of the cooktop.

10. A range hood and stove linkage system, characterized in that, The range hood and cooktop linkage system includes cookware and the range hood and cooktop linkage device as described in claim 8 or 9.

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