Signal detection method, cooking control method, electronic equipment and cooking utensil

Abstract

The invention discloses a signal detection method, a cooking control method, electronic equipment and a cooking utensil. A cooking utensil relates to the technical field of cooking control and is provided with a signal detection module, the signal detection module comprises an upper wireless module and a lower wireless module, a sampling resistor, a thermistor and a divider resistor are arranged in the upper wireless module, the divider resistor is connected with an inductive switch in parallel, and the on-off state of the inductive switch is determined by the pressure state in the cooking utensil. The method comprises the steps that the partial pressure value of a sampling resistor is obtained, a sampling signal value is obtained, and the partial pressure value changes along with the temperature in the cooking utensil; the sampling signal value is sent to the wireless lower module; and determining a pressure state in the cooking utensil based on the sampling signal value. According to the electric pressure cooker, the problems that an upper pressure signal is difficult to accurately detect by a split electric pressure cooker and the cooking efficiency is low in order to ensure that the pressure does not overflow are solved.

Description

[0001] This application is a divisional application of Chinese patent application filed on September 30, 2024, with application number 2024113847522 and title "Signal Detection Method, Cooking Control Method, Electronic Device and Cooking Utensil". Technical Field

[0002] This application relates to the field of cooking control technology, and more specifically, to a signal detection method, a cooking control method, an electronic device, and a cooking appliance. Background Technology

[0003] Electric pressure cookers are an indispensable cooking tool in modern kitchens because they can quickly cook food. Electric pressure cookers include combined electric pressure cookers and separate electric pressure cookers. The lid of a separate electric pressure cooker can be removed for easy cleaning and it has a wide range of applications.

[0004] In related technologies, the split-type electric pressure cooker can detect temperature signals through a temperature signal detection module on the lid of the electric pressure cooker and transmit them wirelessly to the control module of the main body of the electric pressure cooker. However, the temperature signal detection module can only sense temperature signals and cannot sense the pressure signal of the cooking device or detect the pressure state inside the cooking appliance. In order to prevent overflow, the boiling is not sufficient during cooking, and the cooking efficiency is low.

[0005] Currently, there is no effective solution to the problem that separate electric pressure cookers in related technologies have difficulty accurately detecting the pressure signal, resulting in low cooking efficiency in order to prevent overflow. Summary of the Invention

[0006] This application provides a signal detection method, a cooking control method, an electronic device, and a cooking appliance to solve the problem in the related art that it is difficult for split-type electric pressure cookers to accurately detect the pressure signal, resulting in low cooking efficiency in order to prevent overflow.

[0007] According to one aspect of this application, a signal detection method is provided. Applied to a cooking appliance, the method includes: acquiring a sampled signal value; determining whether the sampled signal value is greater than a signal threshold, wherein the signal threshold is greater than or equal to the signal value corresponding to a preset boiling point on a first curve, the first curve indicating the relationship between the sampled signal value and the temperature value of the cooking appliance in a non-pressurized state; if the sampled signal value is less than the signal threshold, determining that no pressurized signal has been detected, and querying the temperature corresponding to the sampled signal value through the first curve to obtain the internal temperature of the cooking appliance; if the sampled signal value is greater than or equal to the signal threshold, determining that a pressurized signal has been detected, and querying the temperature corresponding to the sampled signal value through a second curve to obtain the internal temperature of the cooking appliance, wherein the second curve indicates the relationship between the sampled signal value and the temperature value of the cooking appliance in a pressurized state. Based on the relationship between the sampled signal value and the signal threshold, the pressure state inside the pot can be determined; by querying the temperature value corresponding to the sampled signal value based on the curve corresponding to the pressure state inside the pot, the internal temperature of the cooking appliance can be obtained, thus achieving the effect of simultaneously detecting the internal temperature and pressure state of the cooking appliance, laying the foundation for improving cooking quality and efficiency.

[0008] Optionally, after determining whether the sampled signal value is greater than a signal threshold, the method further includes: if the sampled signal value is less than the signal threshold, querying the temperature corresponding to the sampled signal value through a first curve, and determining whether the queried temperature value is greater than a preset temperature value, wherein the preset temperature value is greater than a preset boiling point, and the sampled signal value of the preset temperature value on the first curve is less than the signal threshold; if the queried temperature value is greater than the preset temperature value, determining that the pressure signal detection function is abnormal. When the sampled signal value is less than the signal threshold, determining whether the pressure signal detection function is normal based on the relationship between the temperature queried from the first curve and the boiling point temperature lays the foundation for accurately collecting the internal temperature and internal pressure status of the cooking appliance.

[0009] Optionally, after determining that the pressure signal detection function is malfunctioning when the queried temperature value is greater than the preset temperature value, the method further includes: after the cooking appliance enters the pressure holding stage, determining whether the sampled signal value is greater than a signal threshold; if the sampled signal value is less than the signal threshold, determining the cause of the malfunction of the pressure signal detection function as a first fault; if the sampled signal value is greater than or equal to the signal threshold, determining the cause of the malfunction of the pressure signal detection function as a second fault. By utilizing the relationship between the sampled signal value and the signal threshold when the cooking appliance enters the pressure holding stage, the fault type is determined, achieving the effect of accurately determining the cause of the malfunction of the pressure signal detection function.

[0010] Optionally, before determining whether the sampled signal value is greater than the signal threshold, the method further includes: determining whether the sampled signal value is greater than or equal to the maximum value, and determining whether the sampled signal value is less than or equal to the minimum value, wherein the signal threshold is greater than the minimum value and less than the maximum value; if the sampled signal value is greater than or equal to the maximum value or less than or equal to the minimum value, it is determined that the signal detection function has malfunctioned; if the sampled signal value is greater than the minimum value and less than the maximum value, it is determined that the signal detection function has not malfunctioned, and the step of determining whether the sampled signal value is greater than the signal threshold is performed. First, the relationship between the sampled signal value and the maximum and minimum values ​​is used to determine whether the overall signal detection function has malfunctioned. If the overall signal detection function has not malfunctioned initially, the signal detection function is then used to detect the internal temperature and internal pressure state of the cooking appliance, laying the foundation for accurately determining the temperature and pressure state.

[0011] According to another aspect of this application, a cooking control method is provided. Applied to a cooking appliance with a signal detection module, the method includes: determining whether the pressure signal detection function of the signal detection module is normal, wherein the signal detection module detects the temperature and pressure state inside the cooking appliance in real time according to the aforementioned signal detection method; when the pressure signal detection function is normal, executing a first cooking program, wherein the first cooking program uses the temperature, pressure state, and actual boiling point temperature detected by the signal detection module to control the cooking appliance for cooking; when the pressure signal detection function is abnormal, executing a second cooking program, wherein the second cooking program controls the cooking appliance for cooking according to the temperature collected by a bottom temperature sensor of the cooking appliance and a preset boiling point temperature. When the pressure signal detection function of the signal detection module is normal, real-time use of temperature and pressure states to control the cooking appliance for cooking improves cooking quality and efficiency. When the pressure signal detection function of the signal detection module is abnormal, the cooking appliance is controlled by the temperature collected by the bottom temperature sensor of the cooking appliance, thereby ensuring that cooking can be completed normally.

[0012] Optionally, when the pressure signal detection function is normal, executing the first cooking program includes: controlling the cooking appliance to enter the heating stage, obtaining the pressure signal marker from the signal detection module, and controlling the cooking appliance to enter the pressing stage when the pressure signal marker indicates the presence of a pressure signal; in the pressing stage, obtaining the internal temperature of the cooking appliance from the signal detection module, and controlling the cooking appliance to enter the holding stage when the internal temperature of the cooking appliance reaches the holding temperature; after the holding stage ends, controlling the cooking appliance to enter the venting stage; in the venting stage, obtaining the pressure signal marker from the signal detection module, and controlling the cooking appliance to end the venting stage when the pressure signal marker indicates the absence of a pressure signal. The first cooking program achieves cooking based on the actual boiling point temperature, determines the actual pressure inside the cooking appliance based on the real-time detected temperature and the actual boiling point temperature, and controls the actual pressure of each working stage of the cooking program to be close to the working pressure of the corresponding stage, achieving precise control of the pressure inside the pot and efficient cooking.

[0013] Optionally, when the cooking function of the cooking appliance is for soups or porridges, the following operations are performed during the pressure-holding stage: The internal temperature of the cooking appliance is obtained from the signal detection module; the actual internal pressure of the cooking appliance is determined based on the internal temperature and the actual boiling point; the actual pressure is controlled within the working pressure range of the pressure-holding stage by controlling the heating program; and an venting operation is performed every preset time interval until the pressure-holding stage ends. By achieving precise boiling point detection through the signal detection module, the internal temperature of the cooking appliance can be controlled based on the actual boiling point during the pressure-holding stage, achieving effective cooking. Furthermore, the addition of an venting operation to the porridge and soup cooking functions solves the problem of insufficient boiling and low nutritional value during cooking.

[0014] Optionally, in the event of a malfunction in the pressure signal detection function, the execution of the second cooking program includes: controlling the cooking appliance to enter the heating stage, heating the cooking appliance according to a preset power, and controlling the cooking appliance to enter the pressing stage when the temperature collected by the bottom temperature sensor reaches the preset boiling point; in the pressing stage, controlling the cooking appliance to enter the pressure holding stage when the temperature collected by the bottom temperature sensor reaches the pressure holding temperature, and controlling the cooking appliance to enter the venting stage after the pressure holding stage ends; in the venting stage, determining the internal pressure of the cooking appliance based on the internal temperature and the preset boiling point, and controlling the cooking appliance to end the venting stage when there is no pressure difference between the internal pressure and the external pressure of the cooking appliance. The second cooking program achieves cooking based on the preset boiling point temperature, determines the estimated internal pressure of the cooking appliance based on the temperature detected in real time by the detection module and the preset boiling point temperature, and controls the estimated pressure of each working stage of the cooking program to be close to the working pressure of the corresponding stage, thereby enabling the cooking of food to be completed even when the pressure signal detection function is malfunctioning.

[0015] Optionally, during the pressure holding and venting stages, if the abnormal pressure signal detection function is due to a second fault, the internal temperature of the cooking appliance is obtained from the signal detection module. If the abnormal pressure signal detection function is due to a first fault, the internal temperature of the cooking appliance is obtained from the bottom temperature sensor. In the case of an abnormal pressure signal detection function, the bottom temperature sensor is used for temperature control initially. After ensuring pressure is reached, during the pressure holding and venting stages, the top sensor in the signal detection module can also intervene in the case of a second fault to improve cooking efficiency. In the case of a first fault, the bottom sensor is still used for temperature control to ensure successful cooking.

[0016] According to another aspect of this application, a cooking appliance is provided, wherein the control module of the cooking appliance is used to perform the cooking control method described above.

[0017] According to another aspect of this application, an electronic device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute a signal detection method or a cooking control method through the computer program.

[0018] This application employs the following steps: acquiring a sampling signal value; determining whether the sampling signal value is greater than a signal threshold, wherein the signal threshold is greater than or equal to the signal value corresponding to a preset boiling point on a first curve, and the first curve indicates the relationship between the sampling signal value and the temperature value of the cooking appliance in a non-pressurized state; if the sampling signal value is less than the signal threshold, determining that no pressurization signal has been detected, and querying the temperature corresponding to the sampling signal value through the first curve to obtain the internal temperature of the cooking appliance; if the sampling signal value is greater than or equal to the signal threshold, determining that a pressurization signal has been detected, and querying the temperature corresponding to the sampling signal value through a second curve to obtain the internal temperature of the cooking appliance, wherein the second curve indicates the relationship between the sampling signal value and the temperature value of the cooking appliance in a pressurized state. This solves the problem in related technologies where split-type electric pressure cookers have difficulty accurately detecting pressurization signals, resulting in low cooking efficiency in order to prevent overflow. Furthermore, it achieves the effect of simultaneously detecting the internal temperature and pressure state of the cooking appliance, laying the foundation for improving cooking quality and efficiency. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0020] Figure 1 This is a flowchart of a signal detection method according to an embodiment of this application;

[0021] Figure 2 This is a schematic diagram of a cooking curve according to an embodiment of this application;

[0022] Figure 3 This is a flowchart of an optional signal detection method according to an embodiment of this application;

[0023] Figure 4 This is a flowchart of a cooking control method according to an embodiment of this application;

[0024] Figure 5 This is a flowchart of an optional cooking control method according to an embodiment of this application;

[0025] Figure 6 This is a schematic diagram of a signal detection module according to an embodiment of this application;

[0026] Figure 7 This is a schematic diagram of a cooking control device according to an embodiment of this application;

[0027] Figure 8 This is a schematic diagram of an electronic device according to an embodiment of this application. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0030] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0031] According to an embodiment of this application, a signal detection method is provided, which is applied to a cooking appliance.

[0032] When necessary, the cooking appliance can be a modular cooking appliance, such as a modular electric pressure cooker. The cooking appliance is equipped with a signal detection module, which includes a wireless upper module and a wireless lower module. The wireless upper module can be located on the lid of the modular cooking appliance, and the wireless lower module can be located on the main body of the modular cooking appliance. When the cooking appliance is closed, the wireless lower module charges the wireless upper module wirelessly. After the wireless upper module is powered on, it collects the sampling signal value and sends the sampling signal value to the wireless lower module wirelessly. The wireless lower module determines the internal temperature and internal pressure status of the cooking appliance based on the sampling signal value.

[0033] Figure 1 This is a flowchart of a signal detection method according to an embodiment of this application. For example... Figure 1 As shown, the method includes the following steps:

[0034] Step S102: Obtain the sampled signal value.

[0035] The sampled signal value is the voltage drop across the sampling resistor. The voltage drop across the sampling resistor changes with the internal temperature of the cooking appliance, so the sampled signal value can characterize the temperature of the cooking appliance.

[0036] When a cooking appliance is in a depressurized state (internal pressure close to or equal to atmospheric pressure) and a pressurized state (internal pressure higher than atmospheric pressure), the voltage drop across the sampling resistor changes differently with temperature. Therefore, the sampled signal value can characterize the pressure state of the cooking appliance. The chip in the wireless up-module sends the sampled signal value to the wireless down-module. Since the sampled signal value can characterize the internal temperature and pressure state of the cooking appliance, the wireless down-module can determine the internal temperature and pressure state of the cooking appliance based on the sampled signal value.

[0037] Step S104: Determine whether the sampled signal value is greater than the signal threshold. The signal threshold is greater than or equal to the signal value corresponding to the preset boiling point on the first curve. The first curve indicates the relationship between the sampled signal value and the temperature value of the cooking appliance in the unpressurized state.

[0038] It should be noted that during the operation of the cooking appliance, it will jump from a non-pressurized state to a pressurized state, causing the sampling signal value to jump and exceed the signal threshold. The internal pressure state of the cooking appliance can be determined by judging whether the sampling signal value is greater than the signal threshold.

[0039] Since the cooking appliance transitions from a non-pressurized state to a pressurized state, the internal temperature of the appliance will reach the pressurized temperature. During the testing phase, the sampled signal values ​​and temperature values ​​of the cooking appliance in the non-pressurized state can be statistically analyzed. A first curve is formed by fitting the sampled signal values ​​and temperature values ​​in the non-pressurized state. The sampled signal value on the first curve that is higher than the pressurized temperature is determined as the signal threshold. The pressurized temperature is the boiling point temperature. The sampled signal value on the first curve that is higher than the boiling point temperature can be determined as the signal threshold. It should be noted that, ideally, the internal temperature of the cooking appliance reaches the plateau boiling point temperature, which is 99℃. On the first curve, reaching 99℃ indicates the pressurized state, completely exceeding the maximum sampled signal value of the first curve. Immediately switch to the second curve. The sampled signal value corresponding to 99℃ on the second curve will also exceed the maximum sampled signal value of the first curve. Therefore, the signal threshold can be the sampled signal value that is higher than the plateau boiling point temperature. Figure 2 This is a schematic diagram of a cooking curve according to an embodiment of this application, such as... Figure 2 As shown, the blue dashed line is the first curve. The sampling signal value corresponding to point A in the first curve is the sampling signal value corresponding to the boiling point temperature. The sampling signal values ​​corresponding to points after point A can be determined as the signal threshold. For example, if the boiling point of the plain is 99℃, the sampling signal value corresponding to 104℃ on the first curve can be determined as the signal threshold.

[0040] Step S106: If the sampled signal value is less than the signal threshold, it is determined that no pressure signal is detected, and the temperature corresponding to the sampled signal value is obtained by querying the first curve to obtain the temperature inside the cooking appliance.

[0041] If the sampled signal value is less than the signal threshold, it means that the sampled signal value has not changed and the inside of the cooking appliance is still in a non-pressurized state. It is determined that no pressurized signal has been detected. In the case that no pressurized signal has been detected, the first curve is used to query the temperature inside the cooking appliance. The temperature corresponding to the sampled signal value is found on the first curve to obtain the temperature inside the cooking appliance.

[0042] Step S108: If the sampled signal value is greater than or equal to the signal threshold, it is determined that an upward pressure signal has been detected, and the temperature corresponding to the sampled signal value is queried through the second curve to obtain the temperature inside the cooking appliance. The second curve indicates the relationship between the sampled signal value and the temperature value of the cooking appliance under the upward pressure state.

[0043] If the sampled signal value is greater than or equal to the signal threshold, it indicates that the sampled signal value has changed abruptly, and the cooking appliance is under pressure, confirming the detection of a pressure signal. During the testing phase, the sampled signal value and temperature value of the cooking appliance under pressure can be statistically analyzed. A second curve can be fitted using these values. When a pressure signal is detected, this second curve is used to query the internal temperature of the cooking appliance. The temperature corresponding to the sampled signal value is found on the second curve, thus obtaining the internal temperature of the cooking appliance. Figure 2 As shown, the solid black line is the second curve, and the dashed red line is the actual temperature curve inside the cooking appliance. That is, the actual temperature curve is composed of the first half of the first curve and the second half of the second curve.

[0044] The signal detection method provided in this application acquires a sampled signal value; determines whether the sampled signal value is greater than a signal threshold, wherein the signal threshold is greater than or equal to the signal value corresponding to a preset boiling point on a first curve, and the first curve indicates the relationship between the sampled signal value and the temperature value of the cooking appliance in a non-pressurized state; if the sampled signal value is less than the signal threshold, it is determined that no pressurized signal has been detected, and the temperature corresponding to the sampled signal value is obtained by querying the first curve to obtain the internal temperature of the cooking appliance; if the sampled signal value is greater than or equal to the signal threshold, it is determined that a pressurized signal has been detected, and the temperature corresponding to the sampled signal value is obtained by querying the second curve to obtain the internal temperature of the cooking appliance, wherein the second curve indicates the relationship between the sampled signal value and the temperature value of the cooking appliance in a pressurized state. This solves the problem in related technologies where split-type electric pressure cookers are difficult to accurately detect pressurized signals, resulting in low cooking efficiency in order to prevent overflow. The pressure state inside the pot can be determined based on the relationship between the sampled signal value and the signal threshold, and the internal temperature of the cooking appliance can be obtained by querying the temperature value corresponding to the sampled signal value based on the curve corresponding to the internal pressure state. This achieves the effect of simultaneously detecting the internal temperature and pressure state of the cooking appliance, laying the foundation for improving cooking quality and efficiency.

[0045] In the case of detecting the internal temperature and internal pressure status of the cooking appliance through the signal detection module, it can also be determined whether the pressure signal detection function of the signal detection module is normal. Optionally, in the signal detection method provided in this application embodiment, after determining whether the sampled signal value is greater than the signal threshold, the method further includes: if the sampled signal value is less than the signal threshold, querying the temperature corresponding to the sampled signal value through the first curve, and determining whether the queried temperature value is greater than the preset temperature value, wherein the preset temperature value is greater than the preset boiling point, and the sampled signal value of the preset temperature value on the first curve is less than the signal threshold; if the queried temperature value is greater than the preset temperature value, it is determined that the pressure signal detection function is abnormal.

[0046] It should be noted that when the sampled signal value is less than the signal threshold, the cooking appliance is determined to be in an unpressurized state. The internal temperature of the cooking appliance is queried through the first curve. Since it is impossible for the internal temperature of the cooking appliance to be greater than the preset boiling point (which can be the boiling point of the plain, 99°C) and the cooking appliance is not pressurized, if the sampled signal value is still less than the signal threshold when the temperature queried through the first curve is greater than the preset boiling point, it means that the pressurized state of the cooking appliance cannot be sensed, and the pressurization signal detection function has malfunctioned.

[0047] Through this implementation, when the sampled signal value is less than the signal threshold, the relationship between the temperature and boiling point temperature obtained from the first curve is used to determine whether the pressure signal detection function is normal, laying the foundation for accurately collecting the internal temperature and internal pressure status of the cooking appliance.

[0048] The reasons for the abnormal pressure signal detection function may vary. Optionally, in the signal detection method provided in this application embodiment, after determining that the abnormal pressure signal detection function is caused by a query temperature value greater than a preset temperature value, the method further includes: after the cooking appliance enters the pressure holding stage, determining whether the sampled signal value is greater than a signal threshold; if the sampled signal value is less than the signal threshold, determining that the abnormal pressure signal detection function is caused by a first fault; if the sampled signal value is greater than or equal to the signal threshold, determining that the abnormal pressure signal detection function is caused by a second fault.

[0049] It should be noted that in the second fault condition, the voltage divider resistor of the sampling resistor is short-circuited. Since the cooking appliance is actually under pressure during the pressure holding stage, the sampled signal value will be greater than the threshold. Therefore, if the sampled signal value is detected to be greater than or equal to the signal threshold during the pressure holding stage, the cause of the abnormal pressure signal detection function can be determined to be the second fault. In the first fault condition, even if the cooking appliance is actually under pressure during the pressure holding stage, the voltage divider resistor will not be short-circuited, and the sampled signal value will not be greater than the threshold. Therefore, if the sampled signal value is detected to be less than the signal threshold during the pressure holding stage, the cause of the abnormal pressure signal detection function can be determined to be the first fault.

[0050] This embodiment utilizes the relationship between the sampling signal value and the signal threshold when the cooking appliance enters the pressure holding stage to determine the fault type, thereby achieving the effect of accurately determining the cause of abnormality in the pressure signal detection function.

[0051] In addition to checking whether the voltage signal detection function of the signal detection module is normal, it is also necessary to check whether the overall signal detection function of the signal detection module is faulty. Optionally, in the signal detection method provided in this application embodiment, before determining whether the sampled signal value is greater than the signal threshold, the method further includes: determining whether the sampled signal value is greater than or equal to the maximum value, and determining whether the sampled signal value is less than or equal to the minimum value, wherein the signal threshold is greater than the minimum value and less than the maximum value; if the sampled signal value is greater than or equal to the maximum value or less than or equal to the minimum value, it is determined that the signal detection function is faulty; if the sampled signal value is greater than the minimum value and less than the maximum value, it is determined that the signal detection function is not faulty, and the step of determining whether the sampled signal value is greater than the signal threshold is executed.

[0052] The minimum value is the sampled signal value when the sampling resistor receives no voltage, and the maximum value is the sampled signal value when the sampling resistor receives the full voltage. When the signal detection function is normal, the sampling resistor can receive a portion of the power supply voltage. Therefore, if the sampled signal value is greater than or equal to the maximum value, or less than or equal to the minimum value, it is determined that the signal detection function is faulty.

[0053] In this embodiment, the relationship between the sampled signal value and the maximum and minimum values ​​is first used to determine whether the overall detection signal detection function is faulty. If the overall detection signal detection function is not faulty, the signal detection function is then used to detect the internal temperature and internal pressure of the cooking appliance, laying the foundation for accurately determining the temperature and pressure.

[0054] This application also provides an optional signal detection method for use in cooking appliances, including:

[0055] Step 1: Obtain the voltage divider value of the sampling resistor to obtain the sampling signal value. The sampling resistor, the thermistor, and the voltage divider resistor are connected in series between the power supply terminal and the ground terminal. The voltage divider resistor is connected in parallel with an inductive switch. The thermistor is placed inside the cooking appliance. The on / off state of the inductive switch is determined by the pressure state inside the cooking appliance.

[0056] It should be noted that the cooking appliance is equipped with a signal detection module, which includes a wireless up module and a wireless down module. A sampling resistor, a thermistor, and a voltage divider resistor are located in the wireless up module. The chip in the wireless up module collects the voltage division value of the sampling resistor to obtain the sampled signal value. The thermistor senses the internal temperature of the cooking appliance. The resistance of the thermistor, which divides the voltage with the sampling resistor, changes with the internal temperature of the cooking appliance, and the voltage division value of the sampling resistor also changes with temperature. Therefore, the sampled signal value can characterize the temperature of the cooking appliance. The inductive switch senses the internal pressure state of the cooking appliance. For example, when the cooking appliance is in a non-pressurized state (internal pressure close to or equal to atmospheric pressure), the inductive switch is open; when the cooking appliance is in a pressurized state (internal pressure higher than atmospheric pressure), the inductive switch is closed. Because the voltage division value of the thermistor changes differently with temperature when the inductive switch is open or closed, and the voltage division value of the sampling resistor changes differently with temperature, the sampled signal value can characterize the pressure state of the cooking appliance.

[0057] Step 2: Determine whether the sampled signal value is greater than the signal threshold. The signal threshold is the signal value corresponding to any temperature value between 125°C and 130°C on the first curve. The first curve indicates the relationship between the sampled signal value and the temperature value of the cooking appliance in the unpressurized state.

[0058] The chip in the wireless upper module sends the sampled signal value to the wireless lower module. Since the sampled signal value can be used to characterize the temperature and pressure state inside the cooking appliance, the wireless lower module can determine the temperature and pressure state inside the cooking appliance based on the sampled signal value. It should be noted that during the operation of the cooking appliance, it will switch from an unpressurized state to a pressurized state. The inductive switch will change from an open state to a closed state, short-circuiting the voltage divider resistor, causing the sampled signal value to jump and exceed the signal threshold. The wireless lower module can determine the pressure state inside the cooking appliance by judging whether the sampled signal value is greater than the signal threshold.

[0059] Since the cooking appliance transitions from a non-pressurized state to a pressurized state, the internal temperature of the appliance will reach the pressurized temperature. During the testing phase, the sampled signal values ​​and temperature values ​​of the cooking appliance in the non-pressurized state can be statistically analyzed. A first curve is constructed by fitting these sampled signal values ​​and temperature values ​​from the non-pressurized state. The sampled signal values ​​on the first curve that exceed the pressurized temperature are determined as the signal threshold. The pressurized temperature is the boiling point temperature, and the sampled signal values ​​on the first curve that exceed the boiling point temperature are also determined as the signal threshold. Ideally, the cooking appliance reaches the pressurized state when its internal temperature reaches the plateau boiling point temperature, which is 99℃. On the first curve, reaching 99℃ indicates the pressurized state has been achieved, completely exceeding the maximum sampled signal value of the first curve. The system then immediately switches to the second curve, where the sampled signal value corresponding to 99℃ will also exceed the maximum sampled signal value of the first curve. However, considering the possibility of sensor switch failure, if the sensor switch has failed while checking the first curve up to 99°C, the voltage divider resistor will not be short-circuited by the sensor switch under the applied voltage. If the signal threshold is the sampling signal value corresponding to 99°C on the first curve, and the sampling signal value is greater than the signal threshold, the system will immediately switch from the first curve to the second curve. Checking the temperature through the second curve will result in a significantly lower temperature, deviating from the actual temperature and causing misjudgment. To avoid sensor switch failure affecting the judgment of the internal temperature and pressure state of the cooking appliance, the signal detection method provided in this application defines the signal value corresponding to any temperature value between 125°C and 130°C on the first curve as the signal threshold.

[0060] If the pressure relief valve has a rated pressure of 100 kPa, the internal temperature of the cooking appliance corresponds to 120°C at 100 kPa. If the pressure relief valve has a rated pressure of 112 kPa, the internal temperature corresponds to 125°C at 112 kPa. The probability of the internal temperature of the cooking appliance exceeding 125°C is extremely small, and it will not exceed 130°C. Therefore, the sampling signal value corresponding to the temperature values ​​between 125°C and 130°C on the first curve can be determined as the signal threshold. Under normal circumstances, the cooking appliance is pressurized at 99°C. After pressurization, the sampling signal value corresponding to 99°C on the second curve is much higher than the sampling signal value corresponding to 125°C on the first curve. If the actual sampling signal value corresponding to 99°C on the second curve is 100, but the sampling temperature value corresponding to 125°C on the first curve is only 60, and the sampling signal value corresponding to 99°C on the first curve may only be 40, then the jump from a sampling signal value of 40 to 100 is definitely greater than the value corresponding to the point of 60. This indicates that when the sampling signal value is greater than 60, a curve switch should be performed when determining the internal temperature of the cooking appliance. In this embodiment, the sampling signal value corresponding to the temperature values ​​between 125℃ and 130℃ on the first curve is determined as the signal threshold. The range of the first curve from its starting point to the point corresponding to the signal threshold is the applicable range of the first curve. The temperature corresponding to the signal threshold lags behind the sampling signal value corresponding to the boiling point temperature on the first curve, and also lags behind the sampling signal value corresponding to temperatures that are impossible to occur inside the cooking appliance. This ensures that the internal temperature of the cooking appliance can be accurately detected even when the sensor switch fails. This avoids the problem of setting the signal threshold too low, which could lead to a significant decrease in temperature and misjudgment if the second curve is immediately used to query the temperature before the cooking appliance is pressurized when the sensor switch fails.

[0061] Step 3: If the sampled signal value is less than the signal threshold, it is determined that no pressure signal has been detected, and the temperature corresponding to the sampled signal value is obtained by querying the first curve to obtain the temperature inside the cooking appliance.

[0062] If the sampled signal value is less than the signal threshold, it means that the sampled signal value has not changed, the induction switch has not changed from the open state to the closed state, and the inside of the cooking appliance is still in an unpressurized state. It is determined that no pressurized signal has been detected. In the case of no pressurized signal being detected, the first curve is used to query the temperature inside the cooking appliance. The temperature corresponding to the sampled signal value is found on the first curve to obtain the temperature inside the cooking appliance.

[0063] Step 4: If the sampled signal value is greater than or equal to the signal threshold, it is determined that an upward pressure signal has been detected. The temperature corresponding to the sampled signal value is then queried through the second curve to obtain the internal temperature of the cooking appliance. The second curve indicates the relationship between the sampled signal value and the temperature value of the cooking appliance under the upward pressure state.

[0064] If the sampled signal value is greater than or equal to the signal threshold, it indicates that the sampled signal value has changed abruptly, the inductive switch has changed from an open state to a closed state, and the cooking appliance is under pressure, confirming that a pressure signal has been detected. During the testing phase, the sampled signal value and temperature value of the cooking appliance under pressure can be statistically analyzed. A second curve can be fitted using the sampled signal value and temperature value under pressure. When a pressure signal is detected, this second curve is used to query the temperature inside the cooking appliance. The temperature corresponding to the sampled signal value is found on the second curve to obtain the internal temperature of the cooking appliance. Figure 2 As shown, the solid black line is the second curve, and the dashed red line is the actual temperature curve inside the cooking appliance. That is, the actual temperature curve is composed of the first half of the first curve and the second half of the second curve.

[0065] The signal detection method provided in this application obtains a sampled signal value by acquiring the voltage divider value of a sampling resistor. The sampling resistor, thermistor, and voltage divider resistor are connected in series between the power supply terminal and the ground terminal. An inductive switch is connected in parallel with the voltage divider resistor. The thermistor is located inside the cooking appliance. The on / off state of the inductive switch is determined by the pressure state inside the cooking appliance. The method determines whether the sampled signal value is greater than a signal threshold. The signal threshold is greater than or equal to the signal value corresponding to a preset boiling point on a first curve, which indicates the relationship between the sampled signal value and the temperature value of the cooking appliance in a non-pressurized state. If the sampled signal value is less than the signal threshold, it is determined that no pressurized signal has been detected, and the temperature corresponding to the sampled signal value is obtained by querying the first curve to obtain the temperature inside the cooking appliance. If the sampled signal value is greater than or equal to the signal threshold, it is determined that a pressurized signal has been detected, and the temperature corresponding to the sampled signal value is obtained by querying the second curve to obtain the temperature inside the cooking appliance. The second curve indicates the relationship between the sampled signal value and the temperature value of the cooking appliance in a pressurized state. This method solves the problem in related technologies where split-type electric pressure cookers have difficulty accurately detecting pressurized signals, resulting in low cooking efficiency in order to prevent overflow. A voltage divider resistor connected in series with the sampling resistor and the thermistor is connected in parallel with an inductive switch. The opening and closing state of the inductive switch is determined by the pressure state inside the cooking appliance. The pressure state inside the pot can be determined based on the relationship between the sampling signal value and the signal threshold. The temperature value corresponding to the sampling signal value can be found by looking up the curve corresponding to the pressure state inside the pot, thus obtaining the temperature inside the cooking appliance. This achieves the effect of simultaneously detecting the temperature and pressure state inside the cooking appliance, laying the foundation for improving cooking quality and efficiency.

[0066] In the case of detecting the internal temperature and internal pressure status of the cooking appliance through the signal detection module, it can also be determined whether the pressure signal detection function of the signal detection module is normal. Optionally, in the signal detection method provided in this application embodiment, after determining whether the sampled signal value is greater than the signal threshold, the method further includes: if the sampled signal value is less than the signal threshold, querying the temperature corresponding to the sampled signal value through the first curve, and determining whether the queried temperature value is greater than a preset temperature value, wherein the preset temperature value ranges from 103℃ to 110℃; if the queried temperature value is greater than the preset temperature value, determining that the pressure signal detection function of the signal detection module is abnormal.

[0067] It should be noted that when the sampled signal value is less than the signal threshold, the cooking appliance is determined to be in an unpressurized state. The internal temperature of the cooking appliance is then checked using the first curve. Since it's impossible for the internal temperature of the cooking appliance to exceed the preset boiling point (which could be the flat boiling point, 99°C) without pressurization, if the sampled signal value is still less than the signal threshold even when the temperature checked via the first curve is greater than the preset boiling point, it indicates that the sensor switch cannot detect the pressurized state of the cooking appliance, and the pressurization signal detection function has malfunctioned. To avoid detection errors, a margin can be added based on the flat boiling point, using any temperature between 103°C and 110°C as the preset temperature value, for example, 105°C. When checking the internal temperature of the cooking appliance via the first curve, if the sampled signal value at 105°C has not yet jumped above the signal threshold, it indicates that the cooking appliance is in a pressurized state, but the sensor switch has not detected the pressurization signal, the sensor switch has failed, and the pressurization signal detection function of the signal detection module is abnormal.

[0068] The abnormality of the pressure signal detection function can be caused by a short circuit or an open circuit in the induction switch. Optionally, in the signal detection method provided in this application embodiment, after determining that the pressure signal detection function of the signal detection module is abnormal when the queried temperature value is greater than the preset temperature value, the method further includes: after the cooking appliance enters the pressure holding stage, determining whether the sampled signal value is greater than the signal threshold; if the sampled signal value is less than the signal threshold, determining that the cause of the abnormality of the pressure signal detection function is an open circuit in the induction switch; if the sampled signal value is greater than or equal to the signal threshold, determining that the cause of the abnormality of the pressure signal detection function is a short circuit in the induction switch.

[0069] It should be noted that when the induction switch is active, if the cooking appliance is under pressure, the induction switch will close, short-circuiting the voltage divider resistor. When the induction switch is short-circuited, the voltage divider resistor will also be short-circuited. Since the cooking appliance is actually under pressure during the pressure holding phase, the sampled signal value will be greater than the threshold value when the induction switch is short-circuited. Therefore, if a sampled signal value greater than or equal to the signal threshold is detected during the pressure holding phase, the cause of the abnormal pressure signal detection function can be determined to be a short circuit in the induction switch. Conversely, when the induction switch is open, even if the cooking appliance is actually under pressure during the pressure holding phase, the voltage divider resistor will not be short-circuited by the induction switch, and the sampled signal value will not be greater than the threshold value. Therefore, if a sampled signal value less than the signal threshold is detected during the pressure holding phase, the cause of the abnormal pressure signal detection function can be determined to be an open circuit in the induction switch.

[0070] In this embodiment, the effects of short circuit and open circuit of the inductive switch on the voltage divider resistor are different under the pressure state. By using the relationship between the sampling signal value and the signal threshold when the cooking appliance enters the pressure holding stage, it is possible to determine whether the inductive switch is short circuit or open circuit, thereby achieving the effect of accurately determining the cause of abnormality in the pressure signal detection function.

[0071] In addition to checking whether the voltage signal detection function of the signal detection module is normal, it is also necessary to check whether the signal detection module as a whole is faulty. Optionally, in the signal detection method provided in this application embodiment, before determining whether the sampled signal value is greater than the signal threshold, the method further includes: determining whether the sampled signal value is greater than or equal to the maximum value, and determining whether the sampled signal value is less than or equal to the minimum value, wherein the signal threshold is greater than the minimum value and less than the maximum value; if the sampled signal value is greater than or equal to the maximum value or less than or equal to the minimum value, it is determined that the signal detection module is faulty; if the sampled signal value is greater than the minimum value and less than the maximum value, it is determined that the signal detection module is not faulty, and the step of determining whether the sampled signal value is greater than the signal threshold is performed.

[0072] The minimum value is the sampled signal value when the sampling resistor receives no voltage, and the maximum value is the sampled signal value when the sampling resistor receives the full voltage. When the signal detection module is working properly, the sampling resistor can receive a portion of the power supply voltage. Therefore, if the sampled signal value is greater than or equal to the maximum value, or less than or equal to the minimum value, it is determined that the signal detection module is faulty.

[0073] In this embodiment, the relationship between the sampled signal value and the maximum and minimum values ​​is first used to determine whether the detection signal module as a whole is faulty. If the detection signal module as a whole is not faulty in the initial detection, the signal detection module is then used to detect the internal temperature and internal pressure of the cooking appliance, laying the foundation for accurately determining the temperature and pressure.

[0074] This application also provides an optional signal detection method. Figure 3 This is a flowchart of an optional signal detection method according to an embodiment of this application; such as Figure 3 As shown, the method includes:

[0075] The signal detection module is invoked to obtain the sampled signal value. The sampled signal value can be the voltage division value of the sampling resistor, which is an AD value. The sampling resistor, NCT thermistor, and voltage divider resistor are connected in series between the power supply terminal and the ground terminal. A reed switch is connected in parallel with the voltage divider resistor. The NCT thermistor is located inside the cooking appliance. The on / off state of the reed switch is determined by the voltage signal from the cooking appliance.

[0076] Determine if the AD value is greater than the maximum or less than the minimum. If the AD value is greater than the maximum or less than the minimum, it indicates a fault in the signal detection module, and the fault flag NTC_Err is set to 1. If the AD value is between the minimum and maximum, it indicates that the signal detection module is functioning normally, and it is then determined whether the AD value is greater than the threshold.

[0077] If the AD value is greater than the threshold, it indicates that the cooking appliance has been pressurized. The fault flag bit NTC_Err is set to 0, and the pressurization signal flag bit Pre_Flg is set to 1, indicating that the appliance has been pressurized. The top temperature of the cooking appliance can be queried through the pressurization table, which is a table showing the relationship between the top temperature of the cooking appliance under pressurization and the AD value.

[0078] If the AD value is less than the threshold, it indicates that the cooking appliance is not pressurized. The fault flag bit NTC_Err is set to 0, and the pressurization signal flag bit Pre_Flg is set to 0, indicating that no pressure is applied. The top temperature of the cooking appliance can be queried through the non-pressurized table, which is a table showing the relationship between the top temperature of the cooking appliance and the AD value when it is not pressurized.

[0079] If the AD value is less than the threshold, further determine whether the top temperature of the cooking appliance queried by the pressure gauge is greater than 105 degrees. If the top temperature is less than or equal to 105 degrees, it indicates that the reed switch detection circuit is normal and the pressure signal fault flag Pre_Err is set to 0. If the top temperature is greater than 105 degrees, it indicates that the reed switch detection circuit is abnormal and the pressure signal fault flag Pre_Err is set to 1.

[0080] Finally, the signal detection module outputs the internal temperature of the cooking appliance, as well as the module fault flag, the pressure signal fault flag, and the pressure signal flag.

[0081] This application also provides a cooking control method, applied to a cooking appliance with a signal detection module. Figure 4 This is a flowchart of a cooking control method according to an embodiment of this application. Figure 4As shown, the method includes the following steps:

[0082] Step S402: Determine whether the pressure signal detection function of the signal detection module is normal. The signal detection module detects the temperature and pressure status inside the cooking appliance in real time according to the above signal detection method.

[0083] The signal detection module stores a pressure signal fault flag, Pre_Err. When Pre_Err is set to 1, it indicates a malfunction in the pressure signal detection function. When Pre_Err is set to 0, it indicates a normal function. The signal detection module can accurately detect the pressure and temperature inside the cooking appliance. If no pressure signal is detected, it means the appliance is in a non-pressurized state, and the temperature can be determined using the temperature curve under non-pressurized conditions. If a pressure signal is detected, it means the appliance is under pressurized conditions, and the temperature can be determined using the temperature curve under pressurized conditions.

[0084] Step S404: If the pressure signal detection function is normal, execute the first cooking program to cook the food inside the cooking appliance. The first cooking program calls the temperature, pressure status and actual boiling point temperature detected by the signal detection module to control the cooking appliance to cook.

[0085] The first cooking program is based on the actual boiling point temperature. With the pressure signal detection function functioning normally, this indicates that the signal detection module can accurately detect the internal temperature and pressure signal of the cooking appliance. During the venting phase, when the stop lever falls, there is no pressure difference between the inside and outside of the cooking appliance. The temperature indicated by the absence of a pressure signal at the pressure signal marker is the actual boiling point temperature. It should be noted that the boiling point does not fluctuate within the same region. However, using the same cooking appliance in different regions will cause fluctuations in the boiling point. To accurately detect the boiling point, the actual boiling point is updated during each venting phase of cooking. It should also be noted that if the pressure information detection fails, the boiling point detection function is considered invalid, and the boiling point will not be updated. Furthermore, it should be noted that the actual boiling point temperature can be the temperature at which the pressure signal disappeared during the previous venting phase of cooking, or it can be preset. For example, the actual boiling point temperature can be preset before shipment based on the shipping region to distinguish between boiling points in plains and high-altitude areas.

[0086] After obtaining the actual boiling point temperature, the actual pressure inside the cooking appliance is determined based on the real-time detected temperature and the actual boiling point temperature. The actual pressure of each working stage of the cooking program is controlled to be close to the working pressure of the corresponding stage, thus achieving precise control of the pressure inside the pot and efficient cooking.

[0087] Step S406: In the event of an abnormal pressure signal detection function, execute the second cooking program to cook the food inside the cooking appliance. The second cooking program controls the cooking appliance to cook according to the temperature collected by the temperature sensor at the bottom of the cooking appliance and the preset boiling point temperature.

[0088] The second cooking program is based on a preset boiling point temperature, which can be a flat boiling point, such as 99°C. If the pressure signal detection function malfunctions, it indicates that the signal detection module cannot accurately detect the pressure signal from the cooking appliance, thus failing to accurately determine the actual boiling point and execute the second cooking program. The malfunctioning pressure signal detection function also affects the accuracy of internal temperature measurement within the cooking appliance. Therefore, a bottom temperature sensor is used to collect the internal temperature of the cooking appliance to control cooking. At each stage of the cooking program, the estimated pressure inside the cooking appliance is determined based on the real-time temperature detected by the detection module and the preset boiling point temperature. The estimated pressure at each stage of the cooking program is controlled to be close to the corresponding working pressure, thus ensuring that food can be cooked even when the pressure signal detection function malfunctions.

[0089] The cooking control method provided in this application determines whether the pressure signal detection function of the signal detection module is normal. The signal detection module detects the temperature and pressure state inside the cooking appliance in real time according to the aforementioned signal detection method. When the pressure signal detection function is normal, a first cooking program is executed, which uses the temperature and pressure state detected by the signal detection module to control the cooking appliance for cooking. When the pressure signal detection function is abnormal, a second cooking program is executed, which uses the temperature collected by the bottom temperature sensor of the cooking appliance to control the cooking appliance for cooking. This solves the problem in related technologies where separate electric pressure cookers have difficulty accurately detecting the pressure signal, resulting in low cooking efficiency in order to prevent overflow. When the pressure signal detection function of the signal detection module is normal, the real-time use of temperature and pressure states to control the cooking appliance improves cooking quality and efficiency. When the pressure signal detection function of the signal detection module is abnormal, the cooking appliance is controlled by the temperature collected by the bottom temperature sensor of the cooking appliance, ensuring that cooking can be completed normally.

[0090] Optionally, in the cooking control method provided in this application embodiment, when the pressure signal detection function is normal, executing the first cooking program to cook the food inside the cooking appliance includes: controlling the cooking appliance to enter the heating stage, obtaining the pressure signal marker bit from the signal detection module, and controlling the cooking appliance to enter the pressing stage when the pressure signal marker bit indicates the presence of a pressure signal; in the pressing stage, obtaining the internal temperature of the cooking appliance from the signal detection module, and controlling the cooking appliance to enter the holding stage when the internal temperature of the cooking appliance reaches the holding temperature; after the holding stage ends, controlling the cooking appliance to enter the venting stage; in the venting stage, obtaining the pressure signal marker bit from the signal detection module, and controlling the cooking appliance to end the venting stage when the pressure signal marker bit indicates the absence of a pressure signal.

[0091] For example, during the heating stage of the cooking appliance, if the pressure signal marker indicates the presence of a pressure signal, it means the cooking appliance has reached or is close to a pressure-up state (cold air inside the pot may cause inaccurate pressure signal readings during the heating stage). The appliance can then enter the pressurization stage, increasing the heating power to ensure the pressure is reached and the holding temperature is achieved (i.e., the pressure inside the pot reaches the target pressure indicated by the holding stage). Once the holding time is reached, the holding stage ends, and the appliance enters the venting stage. During the venting stage, the pressure signal marker is read. If the pressure signal marker indicates the absence of a pressure signal, it means there is no pressure difference between the inside and outside of the cooking appliance, and the user can open the lid to eat. The venting stage can then end, and an open lid signal is output.

[0092] It should be noted that in related technologies, it is difficult to accurately obtain the boiling point of separate cooking appliances. The preset boiling point is the plateau boiling point. To avoid overflow, the venting is not very aggressive. Venting at the plateau boiling point in the plains makes it difficult to detect when the pressure signal disappears at the end of the venting phase. It is also difficult to output the lid-opening signal when the stop lever just drops and there is just no pressure difference between the inside and outside of the cooking appliance. The only option is to output the lid-opening signal when the internal temperature of the cooking appliance reaches a conservative level. The venting speed is slow, and the user has to wait a long time for venting. In contrast, this embodiment can accurately measure the actual boiling point and effectively control the pressure inside the pot based on the actual boiling point. It can flexibly adjust the venting and accelerate the venting speed without overflowing. The lid-opening signal is output immediately after the pressure signal disappears, thus improving the venting efficiency.

[0093] To improve cooking quality, optionally, in the cooking control method provided in this application embodiment, when the cooking function of the cooking appliance is soup or porridge, the following operations are performed during the pressure holding stage: the temperature inside the cooking appliance is obtained from the signal detection module, and the actual pressure inside the cooking appliance is determined based on the temperature inside the cooking appliance and the actual boiling point; the actual pressure is controlled within the working pressure range of the pressure holding stage by controlling the heating program, and an exhaust operation is performed every preset time period until the pressure holding stage ends.

[0094] Specifically, during the cooking process, the signal detection module continuously operates to accurately acquire the internal temperature of the cooking appliance in real time. It calculates the temperature difference between the internal temperature and the boiling point, and uses the product of this temperature difference and 5 kPa as the actual internal pressure of the cooking appliance. During the pressure-holding phase, the internal pressure is controlled near the working pressure of the pressure-holding phase by controlling the heating program. The working pressure of the pressure-holding phase varies depending on the cooking function; for example, it is 70 kPa for simmering soup and 50 kPa for cooking porridge. Controlling the internal pressure of the cooking appliance is equivalent to controlling its internal temperature. For example, the working pressure during the pressure-holding phase when cooking porridge is 50 kPa. In plains areas, the internal temperature of the cooking appliance is controlled at around 110°C, while in high-altitude areas, it is controlled at around 103°C.

[0095] It should be noted that in order to improve the nutritional value of porridge and soup, a venting operation can be performed during normal cooking. For example, after the porridge or soup cooking function enters the pressure holding stage, venting can be performed during the pressure holding stage to ensure full boiling, thereby making the cooking more thorough and improving the nutritional value. Different venting volumes can also be flexibly set according to different functions. For example, compared with porridge cooking, soup venting has a larger venting volume and more vigorous boiling.

[0096] In this embodiment, precise boiling point detection is achieved through a signal detection module, which can control the internal temperature of the cooking appliance through the actual boiling point during the pressure holding stage, thus achieving effective cooking. Furthermore, the addition of a venting operation in the porridge and soup cooking functions solves the problem of insufficient boiling and low nutritional value during cooking.

[0097] Optionally, in the cooking control method provided in this application embodiment, when the pressure signal detection function is abnormal, executing a second cooking procedure to cook the food inside the cooking appliance includes: controlling the cooking appliance to enter the heating stage, heating the cooking appliance according to a preset power, and controlling the cooking appliance to enter the pressing stage when the temperature collected by the bottom temperature sensor reaches the preset boiling point; in the pressing stage, controlling the cooking appliance to enter the holding stage when the temperature collected by the bottom temperature sensor reaches the holding temperature, and controlling the cooking appliance to enter the venting stage after the holding stage ends; in the venting stage, determining the internal pressure of the cooking appliance based on the internal temperature and the preset boiling point, and controlling the cooking appliance to end the venting stage when there is no pressure difference between the internal pressure and the external pressure of the cooking appliance.

[0098] It should be noted that if the pressure signal detection function malfunctions, the signal detection module will have difficulty accurately detecting the pressure signal and accurately measuring the internal temperature of the cooking appliance. Temperature will then be measured using a bottom temperature sensor, and low-power heating will be applied. During the heating phase, low-power continuous heating will occur; for example, the internal temperature of the cooking appliance will be maintained at 80°C for a period of time, then heated to 90°C, and maintained for a period of time, gradually increasing the temperature until the preset boiling point is reached, at which point the pressure-pressing phase begins. The pressure-pressing phase will not be too aggressive, continuing low-power heating until the program reaches the pressure-holding phase. After the pressure-holding time is reached, the pressure-holding phase ends, and the venting phase begins. Venting ends when there is no pressure difference between the internal pressure and the external pressure of the cooking appliance.

[0099] It should be noted that the second cooking program is an abnormal cooking program, and the boiling point detection function is malfunctioning. In order to prevent overflow, the pressure holding stage of the porridge and soup cooking functions is no longer vented, and the venting speed during the venting stage is slowed down to ensure that the food can be cooked completely. In this embodiment, no error is reported after the pressure signal detection function fails, which improves the user experience without affecting normal use.

[0100] The reasons for the abnormality of the pressure signal detection function are different, and the temperature measurement methods in the pressure holding stage and the exhaust stage can be different. Optionally, in the cooking control method provided in the embodiments of this application, if the reason for the abnormality of the pressure signal detection function is a second fault, the temperature inside the cooking appliance is obtained from the signal detection module in the pressure holding stage and the exhaust stage. If the reason for the abnormality of the pressure signal detection function is a first fault, the temperature inside the cooking appliance is obtained from the bottom temperature sensor.

[0101] It should be noted that in the second fault condition, the voltage divider resistor of the sampling resistor is short-circuited. Since the cooking appliance is actually under pressure during the pressure holding stage, the sampled signal value will be greater than the threshold. Therefore, if the sampled signal value is detected to be greater than or equal to the signal threshold during the pressure holding stage, the cause of the abnormal pressure signal detection function can be determined to be the second fault. In the first fault condition, even if the cooking appliance is actually under pressure during the pressure holding stage, the voltage divider resistor will not be short-circuited, and the sampled signal value will not be greater than the threshold. Therefore, if the sampled signal value is detected to be less than the signal threshold during the pressure holding stage, the cause of the abnormal pressure signal detection function can be determined to be the first fault.

[0102] Therefore, during the cooking process, the bottom temperature sensor is used to control the temperature first. Once the pressure is secured, if the sampled signal value is less than the signal threshold, it indicates that the inductive switch has failed, which is the first fault. During the pressure holding and exhaust phases, the bottom sensor continues to control the temperature. If the sampled signal value of the signal detection module is greater than or equal to the signal threshold, it indicates that the inductive switch has failed, which is the second fault. After pressure is secured, the signal detection module can accurately measure the temperature. During the pressure holding and exhaust phases, the signal detection module takes over the bottom sensor's temperature control, thereby improving the accuracy of temperature measurement.

[0103] In this embodiment, when the pressure signal detection function is abnormal, the bottom temperature sensor is used to control the temperature in the early stage. After ensuring the pressure is maintained during the pressure holding and venting stages, the top sensor in the signal detection module can also intervene in the second fault to improve cooking efficiency. In the first fault, the bottom sensor is still used to control the temperature to ensure successful cooking.

[0104] In an optional implementation, the sampling signal value is the voltage division value of the sampling resistor. The sampling resistor, the thermistor, and the voltage dividing resistor are connected in series between the power supply terminal and the ground terminal. An inductive switch is connected in parallel with the voltage dividing resistor. The thermistor is located inside the cooking appliance. The on / off state of the inductive switch is determined by the pressure state inside the cooking appliance. Optionally, in the cooking control method provided in this application embodiment, during the pressure holding stage and the exhaust stage, if the cause of the abnormal pressure signal detection function is a short circuit in the inductive switch, the temperature inside the cooking appliance is obtained from the signal detection module. If the cause of the abnormal pressure signal detection function is a short circuit in the inductive switch, the temperature inside the cooking appliance is obtained from the bottom temperature sensor.

[0105] It should be noted that a malfunctioning inductive switch leads to abnormal pressure signal detection. The inductive switch malfunction can be caused by an open circuit or a short circuit. The first fault is an open circuit, and the second is a short circuit. After the inductive switch malfunctions, the signal detection module's temperature measurement becomes inaccurate. During cooking, the bottom temperature sensor is used to control the temperature initially. Once pressure is achieved, if the sampled signal value is less than the signal threshold, it indicates that the inductive switch malfunctioned due to an open circuit. During the pressure holding and exhaust phases, temperature control is still performed by the bottom sensor. If the sampled signal value of the signal detection module is greater than or equal to the signal threshold, it indicates that the inductive switch malfunctioned due to a short circuit. After pressure is achieved, the signal detection module can accurately measure the temperature. Because the bottom temperature sensor's temperature measurement accuracy is not high and fluctuates greatly, the signal detection module takes over temperature control from the bottom sensor during the pressure holding and exhaust phases, thereby improving the accuracy of temperature measurement.

[0106] In this embodiment, when the pressure signal detection function is abnormal, the bottom temperature sensor is used to control the temperature in the early stage. After ensuring the pressure is maintained and the exhaust stage, the top sensor in the signal detection module can also intervene in the case of a short circuit in the induction switch, which improves the cooking efficiency. Even when the induction switch is open, the bottom sensor is still used to control the temperature to ensure successful cooking.

[0107] According to another aspect of this application, a cooking appliance is provided, wherein the control module of the cooking appliance is used to execute the above-described cooking control method to cook food within the cooking appliance.

[0108] The cooking appliance can be a modular appliance, such as a modular electric pressure cooker. The appliance is equipped with a signal detection module, including a wireless upper module and a wireless lower module. The upper module can be located on the lid, and the lower module can be located on the main body. When the lid is closed, the upper and lower modules are within each other's sensing range. The lower module wirelessly charges the upper module. After powering on, the upper module collects sampled signal values ​​and transmits them wirelessly to the lower module. The lower module determines the internal temperature and pressure of the appliance based on the sampled signal values. During cooking, the appliance's control module calls the signal detection module to obtain the internal temperature and pressure, and executes the cooking program based on these conditions. In addition, it should be noted that the wireless upper module and the wireless lower module can also be used to implement the lid opening and closing detection method. The control module contains the program for implementing the lid opening and closing detection method. The control module can implement the lid opening and closing detection method based on the communication between the wireless upper module and the wireless lower module (e.g., patent application number 202111679962.0 "Method, System, Storage Medium and Electronic Device for Determining Device Status" and patent application number 202210178529.7 "Method, Device, Storage Medium and Electronic Device for Determining Device Status").

[0109] In one alternative implementation, the cooking appliance can Figure 5 The cooking control method shown Figure 5 This is a flowchart of an optional cooking control method according to an embodiment of this application. For example... Figure 5 As shown, the method includes the following steps:

[0110] After the cooking appliance starts cooking, the control module of the cooking appliance reads the boiling point temperature and enters the heating stage. It calls the signal detection module to determine whether the pressure signal flag Pre_Err is 1, so as to determine whether the pressure signal detection function is normal.

[0111] If Pre_Err is not 1, it indicates that the pressure signal detection function is normal. During cooking, the temperature and pressure status detected by the signal detection module can be used to control the cooking process. During the heating stage, it checks if the pressure signal flag Pre_Flg is 1. If Pre_Flg is 1, it indicates that the pressure-pressing stage can begin, and the power is increased to ensure the pressure is reached. During the pressure-pressing stage, the signal detection module is continuously called to obtain accurate temperature, which is converted into pressure. It is then checked whether the target pressure has been reached, and if so, the pressure-holding stage begins. After entering the pressure-holding stage, for soup and porridge functions, the solenoid valve releases air to increase boiling. Different air release volumes are set according to different functions to ensure more thorough cooking without overflowing, thus improving nutritional value. After the pressure-holding stage ends, the air release stage begins. The signal detection module checks if the pressure signal flag Pre_Flg is 0. If Pre_Flg is 0, it indicates that the stop lever has fallen, the pot is in a non-pressurized state, the air release stage ends, and the lid can be safely opened.

[0112] When Pre_Err is 1, it indicates a malfunction in the pressure signal detection function, triggering a fault cooking mode. Both fault cooking and normal cooking involve heating, pressurizing, holding, and venting stages, but the temperature control methods for the same stages differ between the two modes, resulting in different cooking curves. Upon entering fault cooking mode, the program for each cooking stage is re-executed from the heating stage to prevent interrupting a particular stage and affecting the cooking result. In fault cooking mode, temperature is controlled by a bottom temperature sensor, preventing the bottom temperature from becoming too high and allowing heat to be gradually conducted upwards to ensure cooking is completed.

[0113] In this embodiment, when the pressure signal detection function is normal, the normal cooking program is executed, and the temperature signal and pressure status collected by the signal detection module are used to efficiently complete the cooking. When the pressure signal detection function is abnormal, the fault cooking program is executed, and the bottom temperature sensor is used to control the temperature to ensure that the cooking can be successful.

[0114] It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases the steps shown or described may be executed in a different order than that shown here.

[0115] This application also provides a signal detection module. It should be noted that the signal detection module of this application can be used to execute the signal detection method provided in this application. The signal detection module provided in this application is described below.

[0116] Figure 6This is a schematic diagram of a signal detection module according to an embodiment of this application. Figure 6 As shown, the signal detection module is applied to cooking appliances and includes: an acquisition unit 602, a first judgment unit 604, a first determination unit 606, and a second determination unit 608.

[0117] Acquisition unit 602 is used to acquire the sampled signal value.

[0118] The first judgment unit 604 is used to determine whether the sampled signal value is greater than the signal threshold, wherein the signal threshold is greater than or equal to the signal value corresponding to the preset boiling point on the first curve, and the first curve indicates the relationship between the sampled signal value and the temperature value of the cooking appliance in the unpressurized state.

[0119] The first determining unit 606 is used to determine that no pressure signal has been detected when the sampled signal value is less than the signal threshold, and to obtain the temperature inside the cooking appliance by querying the temperature corresponding to the sampled signal value through the first curve.

[0120] The second unit is used to determine that an upward pressure signal has been detected when the sampled signal value is greater than or equal to the signal threshold, and to obtain the temperature inside the cooking appliance by querying the temperature corresponding to the sampled signal value through the second curve. The second curve indicates the relationship between the sampled signal value and the temperature value of the cooking appliance under the upward pressure state.

[0121] The signal detection module provided in this application, through the acquisition unit 602, the first judgment unit 604, the first determination unit 606, and the second determination unit 608, solves the problem in related technologies where split-type electric pressure cookers struggle to accurately detect the pressure signal, leading to low cooking efficiency in order to prevent overflow. The pressure state inside the pot can be determined based on the relationship between the sampled signal value and the signal threshold. The temperature value corresponding to the sampled signal value is then retrieved from the curve corresponding to the pressure state inside the pot, thus obtaining the internal temperature of the cooking appliance. This achieves the effect of simultaneously detecting both the internal temperature and pressure state of the cooking appliance, laying the foundation for improving cooking quality and efficiency.

[0122] Optionally, in the signal detection module provided in this application embodiment, the signal detection module further includes: a second judgment unit, used to, after judging whether the sampled signal value is greater than a signal threshold, if the sampled signal value is less than the signal threshold, query the temperature corresponding to the sampled signal value through a first curve, and judge whether the queried temperature value is greater than a preset temperature value, wherein the preset temperature value is greater than a preset boiling point, and the sampled signal value of the preset temperature value on the first curve is less than the signal threshold; and a third determination unit, used to, if the queried temperature value is greater than the preset temperature value, determine that the pressure signal detection function of the signal detection function is abnormal.

[0123] Optionally, in the signal detection module provided in this application embodiment, the signal detection module further includes: a third judgment unit, used to determine whether the sampled signal value is greater than a signal threshold after the cooking appliance enters the pressure holding stage, after determining that the pressure signal detection function is abnormal when the queried temperature value is greater than a preset temperature value; a fourth determination unit, used to determine that the cause of the abnormal pressure signal detection function is a first fault when the sampled signal value is less than the signal threshold; and a fifth determination unit, used to determine that the cause of the abnormal pressure signal detection function is a second fault when the sampled signal value is greater than or equal to the signal threshold.

[0124] Optionally, in the signal detection module provided in this application embodiment, the signal detection module further includes: a fourth judgment unit, used to determine whether the sampled signal value is greater than or equal to the maximum value and whether the sampled signal value is less than or equal to the minimum value before determining whether the sampled signal value is greater than the signal threshold, wherein the signal threshold is greater than the minimum value and the signal threshold is less than the maximum value; a sixth determination unit, used to determine that the signal detection function has malfunctioned when the sampled signal value is greater than or equal to the maximum value or less than or equal to the minimum value; and a seventh determination unit, used to determine that the signal detection function has not malfunctioned when the sampled signal value is between the minimum value and the maximum value, and to perform the step of determining whether the sampled signal value is greater than the signal threshold.

[0125] The signal detection module includes a processor and a memory. The acquisition unit 602, the first judgment unit 604, the first determination unit 606, and the second determination unit 608 are all stored in the memory as program units. The processor executes the program units stored in the memory to achieve the corresponding functions.

[0126] The processor contains a kernel, which retrieves the corresponding program unit from memory. One or more kernels can be configured. By adjusting kernel parameters, the problem of inaccurate pressure signal detection in split-type electric pressure cookers, leading to low cooking efficiency and preventing overflow, can be addressed.

[0127] The memory may include non-permanent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0128] This application also provides a cooking control device. It should be noted that the cooking control device of this application can be used to execute the signal detection method provided in this application. The cooking control device provided in this application is described below.

[0129] Figure 7 This is a schematic diagram of a cooking control device according to an embodiment of this application. Figure 7 As shown, the device includes: a fifth judgment unit 702, a first execution unit 704, and a second execution unit 706.

[0130] The fifth judgment unit 702 is used to judge whether the pressure signal detection function of the signal detection module is normal. The signal detection module detects the temperature and pressure status inside the cooking appliance in real time according to the above signal detection method.

[0131] The first execution unit 704 is used to execute a first cooking program when the pressure signal detection function is normal. The first cooking program calls the temperature, pressure status and actual boiling point temperature detected by the signal detection module to control the cooking appliance to cook.

[0132] The second execution unit 706 is used to execute a second cooking program when the pressure signal detection function is abnormal. The second cooking program controls the cooking appliance to cook according to the temperature collected by the temperature sensor at the bottom of the cooking appliance and the preset boiling point temperature.

[0133] The cooking control device provided in this application, through the fifth judgment unit 702, the first execution unit 704, and the second execution unit 706, solves the problem in related technologies where split-type electric pressure cookers have difficulty accurately detecting the pressure signal, resulting in low cooking efficiency in order to prevent overflow. When the pressure signal detection function of the signal detection module is normal, the cooking appliance is controlled in real time based on the temperature and pressure status, achieving accurate detection of temperature and pressure status by the signal detection module, thereby improving cooking quality and efficiency. When the pressure signal detection function of the signal detection module is abnormal, the cooking appliance is controlled by the temperature collected by the temperature sensor at the bottom of the cooking appliance, thus ensuring that cooking can be completed normally.

[0134] Optionally, in the cooking control device provided in this application embodiment, when the pressure signal detection function is normal, the first execution unit 704 includes: a first control module, used to control the cooking appliance to enter the heating stage, obtain a pressure signal marker from the signal detection module, and control the cooking appliance to enter the pressing stage when the pressure signal marker indicates the presence of a pressure signal; a second control module, used to obtain the internal temperature of the cooking appliance from the signal detection module during the pressing stage, and control the cooking appliance to enter the holding stage when the internal temperature of the cooking appliance reaches the holding temperature, and control the cooking appliance to enter the venting stage after the holding stage ends; and a third control module, used to obtain a pressure signal marker from the signal detection module during the venting stage, and control the cooking appliance to end the venting stage when the pressure signal marker indicates the absence of a pressure signal.

[0135] Optionally, in the cooking control device provided in the embodiments of this application, when the cooking function of the cooking appliance is soup or porridge, the following operations are performed during the pressure holding stage: the temperature inside the cooking appliance is obtained from the signal detection module, and the actual pressure inside the cooking appliance is determined according to the temperature inside the cooking appliance and the actual boiling point; the actual pressure is controlled within the working pressure range of the pressure holding stage by controlling the heating program, and an exhaust operation is performed every preset time period until the pressure holding stage ends.

[0136] Optionally, in the cooking control device provided in this application embodiment, in the event of an abnormality in the pressure signal detection function, the second execution unit 706 includes: a fourth control module, used to control the cooking appliance to enter the heating stage, heat the cooking appliance according to a preset power, and control the cooking appliance to enter the pressing stage when the temperature collected by the bottom temperature sensor reaches the preset boiling point; a fifth control module, used to control the cooking appliance to enter the pressure holding stage when the temperature collected by the bottom temperature sensor reaches the pressure holding temperature during the pressing stage, and control the cooking appliance to enter the venting stage after the pressure holding stage ends; and a sixth control module, used to determine the internal pressure of the cooking appliance based on the internal temperature and the preset boiling point during the venting stage, and control the cooking appliance to end the venting stage when there is no pressure difference between the internal pressure and the external pressure of the cooking appliance.

[0137] Optionally, in the cooking control device provided in the embodiments of this application, during the pressure holding stage and the exhaust stage, if the cause of the abnormal pressure signal detection function is a second fault, the temperature inside the cooking appliance is obtained from the signal detection module; if the cause of the abnormal pressure signal detection function is a first fault, the temperature inside the cooking appliance is obtained from the bottom temperature sensor.

[0138] The cooking control device includes a processor and a memory. The fifth judgment unit 702, the first execution unit 704, and the second execution unit 706 are all stored in the memory as program units. The processor executes the program units stored in the memory to realize the corresponding functions.

[0139] The processor contains a kernel, which retrieves the corresponding program unit from memory. One or more kernels can be configured. By adjusting kernel parameters, the problem of inaccurate pressure signal detection in split-type electric pressure cookers, leading to low cooking efficiency and preventing overflow, can be addressed.

[0140] The memory may include non-permanent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0141] This application also provides a computer storage medium for storing a program, wherein the program, when running, controls the device where the non-volatile storage medium is located to execute a signal detection method or a cooking control method.

[0142] This application also provides an electronic device. Figure 8 This is a schematic diagram of an electronic device according to an embodiment of this application. The electronic device 80 includes a processor and a memory; the memory stores computer-readable instructions, and the processor is used to execute the computer-readable instructions, wherein the computer-readable instructions execute a signal detection method when they are run. The electronic device in this document may be a server, PC, PAD, mobile phone, etc.

[0143] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0144] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0145] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0146] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0147] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0148] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0149] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0150] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0151] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A signal detection method, characterized by, The application is applied to a cooking utensil provided with a signal detection module, the signal detection module comprises a wireless upper module and a wireless lower module, a sampling resistor, a thermistor and a voltage dividing resistor are arranged in the wireless upper module, the voltage dividing resistor is connected in parallel with an induction switch, the on-off state of the induction switch is determined by the pressure state inside the cooking utensil, and the method comprises: obtaining a voltage dividing value of the sampling resistor to obtain a sampling signal value, wherein the voltage dividing value changes with the temperature inside the cooking utensil; sending the sampling signal value to the wireless lower module; determining the pressure state inside the cooking utensil based on the sampling signal value.

2. The signal detection method of claim 1, wherein, The sampling signal value represents the pressure state inside the cooking utensil, and determining the pressure state inside the cooking utensil based on the sampling signal value comprises: determining whether the sampling signal value is greater than a signal threshold value; in the case that the sampling signal value is less than the signal threshold value, determining that no upper pressure signal is detected; in the case that the sampling signal value is greater than or equal to the signal threshold value, determining that the upper pressure signal is detected.

3. The signal detection method of claim 1, wherein, Before determining whether the sampling signal value is greater than a signal threshold value, the method further comprises: determining whether the sampling signal value is greater than or equal to a maximum value and whether the sampling signal value is less than or equal to a minimum value, wherein the signal threshold value is greater than the minimum value and the signal threshold value is less than the maximum value; in the case that the sampling signal value is greater than or equal to the maximum value or less than or equal to the minimum value, determining that the signal detection function fails; in the case that the sampling signal value is greater than the minimum value and less than the maximum value, determining that the signal detection function does not fail, and performing the step of determining whether the sampling signal value is greater than the signal threshold value. 4.A cooking control method applied to a cooking appliance having a signal detection module, the method comprising: comprises: determining whether the upper pressure signal detection function of the signal detection module is normal, wherein the signal detection module detects the temperature and pressure state inside the cooking utensil in real time according to the signal detection method in any one of claims 1 to 3; in the case that the upper pressure signal detection function is normal, performing a first cooking program, wherein the first cooking program controls the cooking utensil to cook according to the temperature, pressure state and actual boiling point temperature detected by the signal detection module; in the case that the upper pressure signal detection function is abnormal, performing a second cooking program, wherein the second cooking program controls the cooking utensil to cook according to the temperature collected by the bottom temperature sensor of the cooking utensil and the preset boiling point temperature.

5. The cooking control method according to claim 4, characterized by, in the case that the upper pressure signal detection function is normal, performing a first cooking program comprises: controlling the cooking utensil to enter a heating stage, obtaining an upper pressure signal mark bit from the signal detection module, and in the case that the upper pressure signal mark bit indicates that there is an upper pressure signal, controlling the cooking utensil to enter a pressure stage. In the stamping phase, the temperature inside the cooking utensil is obtained from the signal detection module, and in the case that the temperature inside the cooking utensil reaches the pressure maintaining temperature, the cooking utensil is controlled to enter the pressure maintaining phase, and after the end of the pressure maintaining phase, the cooking utensil is controlled to enter the exhaust phase. In the exhaust phase, the upper pressure signal marker bit is obtained from the signal detection module, and in the case that the upper pressure signal marker bit indicates that the upper pressure signal does not exist, the cooking utensil is controlled to end the exhaust phase.

6. The cooking control method according to claim 5, characterized by, In the case that the cooking function of the cooking utensil is soup or porridge, the following operations are performed in the pressure maintaining phase: The temperature inside the cooking utensil is obtained from the signal detection module, and the actual pressure inside the cooking utensil is determined according to the temperature inside the cooking utensil and the actual boiling point; The actual pressure is controlled to be within the working pressure range of the pressure maintaining phase through the control of the heating program, and the exhaust operation is performed every preset time period until the end of the pressure maintaining phase.

7. The cooking control method according to claim 4, characterized by, In the case that the upper pressure signal detection function is abnormal, the second cooking program includes: The cooking utensil is controlled to enter the heating phase, and the cooking utensil is heated at a preset power, and in the case that the temperature collected by the bottom temperature sensor reaches the preset boiling point, the cooking utensil is controlled to enter the stamping phase; In the stamping phase, in the case that the temperature collected by the bottom temperature sensor reaches the pressure maintaining temperature, the cooking utensil is controlled to enter the pressure maintaining phase, and after the end of the pressure maintaining phase, the cooking utensil is controlled to enter the exhaust phase; In the exhaust phase, the internal pressure of the cooking utensil is determined according to the internal temperature of the cooking utensil and the preset boiling point, and in the case that there is no pressure difference between the internal pressure of the cooking utensil and the external pressure of the cooking utensil, the cooking utensil is controlled to end the exhaust phase.

8. The cooking control method according to claim 7, characterized by, In the pressure maintaining phase and the exhaust phase, if the cause of the abnormality of the upper pressure signal detection function is the second fault, the temperature inside the cooking utensil is obtained from the signal detection module, and if the cause of the abnormality of the upper pressure signal detection function is the first fault, the temperature inside the cooking utensil is obtained from the bottom temperature sensor.

9. An electronic device, comprising: A cooking utensil includes a memory and a processor, the memory stores a computer program, and the processor is configured to execute the signal detection method of any one of claims 1 to 3 or the cooking control method of any one of claims 4 to 8 through the computer program.

10. A cooking appliance characterized by, A control module of a cooking utensil is used to execute the cooking control method of any one of claims 4 to 8.

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