Signal detection method, cooking control method, electronic device and cooking appliance

Abstract

The present application discloses a signal detection method, a cooking control method, an electronic device and a cooking utensil. It relates to the technical field of cooking control, and the method comprises: obtaining a sampling signal value of a sampling resistor; if the sampling signal value is less than a signal threshold, it is determined that no pressure signal is detected, and the temperature inside the cooking utensil is queried through a relationship curve between the sampling signal value and the temperature value in a non-pressure state; if the sampling signal value is greater than or equal to the signal threshold, it is determined that a pressure signal is detected, and the temperature inside the cooking utensil is queried through a relationship curve between the sampling signal value and the temperature value in a pressure state. Through the present application, the problem that it is difficult for a split electric pressure cooker to accurately detect a pressure signal, and the cooking efficiency is low in order to ensure that the pot does not overflow, is solved.

Description

Technical Field

[0001] The present application relates to the technical field of cooking control, and in particular to a signal detection method, a cooking control method, an electronic device and a cooking appliance. Background Art

[0002] The electric pressure cooker has the function of cooking food quickly and is an indispensable cooking tool in the modern kitchen. Electric pressure cookers include combined electric pressure cookers and split electric pressure cookers. The lid of the split electric pressure cooker can be removed, which is convenient for cleaning and has a wide range of applications.

[0003] The split-type electric pressure cooker in the related technology can detect the temperature signal through the temperature signal detection module on the lid of the electric pressure cooker, and transmit it to the control module of the main body of the electric pressure cooker by wireless transmission. The temperature signal detection module can only sense the temperature signal, but cannot sense the pressure signal of the cooking device, and cannot detect the pressure state inside the cooking utensil. In order to ensure that the pot does not overflow, the boiling during cooking is insufficient and the cooking efficiency is low.

[0004] With regard to the problem that it is difficult for a split electric pressure cooker in the related art to accurately detect the upper pressure signal, in order to ensure that the pot does not overflow and the cooking efficiency is low, no effective solution has been proposed yet. Summary of the invention

[0005] The present application provides a signal detection method, a cooking control method, an electronic device and a cooking utensil to solve the problem in the related art that it is difficult for a split electric pressure cooker to accurately detect an upper pressure signal, and in order to ensure that the pot does not overflow, the cooking efficiency is low.

[0006] According to one aspect of the present application, a signal detection method is provided. Applied to a cooking appliance, the method includes: obtaining a sampling signal value; judging 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 the preset boiling point on the 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; when the sampling signal value is less than the signal threshold, it is determined that the pressure signal is not detected, and the temperature corresponding to the sampling signal value is queried through the first curve to obtain the temperature inside the cooking appliance; when the sampling signal value is greater than or equal to the signal threshold, it is determined that the pressure signal is detected, and the temperature corresponding to the sampling signal value is queried through the second curve to obtain the temperature inside the cooking appliance, wherein the second curve indicates the relationship between the sampling signal value and the temperature value of the cooking appliance in the pressure state. The pressure state in the pot can be determined according to the relationship between the sampling signal value and the signal threshold, and the temperature value corresponding to the sampling signal value is queried according to the curve corresponding to the pressure state in the pot to obtain the temperature inside the cooking appliance, thereby achieving the effect of simultaneously detecting the temperature and pressure state inside the cooking appliance, laying a foundation for improving cooking quality and cooking efficiency.

[0007] Optionally, after determining whether the sampling signal value is greater than the signal threshold, the method further includes: when the sampling signal value is less than the signal threshold, querying the temperature corresponding to the sampling 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 is greater than the preset boiling point, and the sampling signal value of the preset temperature value on the first curve is less than the signal threshold; when the queried temperature value is greater than the preset temperature value, determining that the upper pressure signal detection function is abnormal. When the sampling signal value is less than the signal threshold, judging whether the upper pressure signal detection function is normal based on the relationship between the temperature queried by the first curve and the boiling point temperature, which lays a foundation for accurately collecting the internal temperature and internal pressure state of the cooking appliance.

[0008] Optionally, when the queried temperature value is greater than the preset temperature value, after determining that the upper pressure signal detection function is abnormal, 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; when the sampled signal value is less than the signal threshold, determining that the cause of the abnormality of the upper pressure signal detection function is the first fault; when the sampled signal value is greater than or equal to the signal threshold, determining that the cause of the abnormality of the upper pressure signal detection function is the second fault. The type of fault is determined by using the relationship between the sampled signal value and the signal threshold when the cooking appliance enters the pressure holding stage, so as to achieve the effect of accurately determining the cause of the abnormality of the upper pressure signal detection function.

[0009] 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 value is greater than the minimum value, and the signal threshold value is less than the maximum value; when the sampled 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 has failed; when the sampled signal value is greater than the minimum value and less than the maximum value, determining that the signal detection function has not failed, and executing the step of determining whether the sampled signal value is greater than the signal threshold. First, determine whether the detection signal detection function as a whole has failed based on the relationship between the sampled signal value and the maximum value and the minimum value. When the preliminary detection signal detection function as a whole has not failed, the signal detection function is used to detect the internal temperature and internal pressure state of the cooking appliance, laying a foundation for accurately determining the temperature and pressure state.

[0010] According to another aspect of the present application, a cooking control method is provided. Applied to a cooking appliance with a signal detection module, the method comprises: 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 above-mentioned signal detection method; when the pressure signal detection function is normal, executing a first cooking program, wherein the first cooking program calls the temperature, pressure state and actual boiling point temperature detected by the signal detection module to control the cooking appliance to cook; when the pressure signal detection function is abnormal, executing a second cooking program, wherein the second cooking program controls the cooking appliance to cook according to the temperature collected by the bottom temperature sensor of the cooking appliance and the preset boiling point temperature. When the pressure signal detection function of the signal detection module is normal, the temperature and pressure state are called in real time to control the cooking appliance to cook, thereby achieving the effect of improving the cooking quality and cooking efficiency; when the pressure signal detection function of the signal detection module is abnormal, the cooking appliance is controlled to cook according to the temperature collected by the bottom temperature sensor of the cooking appliance, thereby achieving the effect of ensuring that cooking can be completed normally.

[0011] Optionally, when the upper pressure signal detection function is normal, executing the first cooking program includes: controlling the cooking appliance to enter the heating stage, obtaining the upper pressure signal mark bit from the signal detection module, and controlling the cooking appliance to enter the stamping stage when the upper pressure signal mark bit indicates the presence of the upper pressure signal; in the stamping stage, obtaining the temperature inside the cooking appliance from the signal detection module, and controlling the cooking appliance to enter the pressure holding stage when the temperature inside the cooking appliance reaches the pressure holding temperature, and after the pressure holding stage ends, controlling the cooking appliance to enter the exhaust stage; in the exhaust stage, obtaining the upper pressure signal mark bit from the signal detection module, and controlling the cooking appliance to end the exhaust stage when the upper pressure signal mark bit indicates the absence of the upper pressure signal. The first cooking program implements 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, thereby achieving the effect of accurately controlling the pressure in the pot and efficient cooking.

[0012] Optionally, when the cooking function of the cooking utensil is soup or porridge, the following operations are performed during the pressure holding stage: 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 within the working pressure range of the pressure holding stage by controlling the heating program, and the exhaust operation is performed every preset time period until the pressure holding stage ends. Accurate boiling point detection can be achieved through the signal detection module, and the internal temperature of the cooking utensil can be controlled by the actual boiling point during the pressure holding stage to achieve effective cooking, and the exhaust operation is added to the porridge and soup cooking functions to solve the problem of insufficient boiling and low nutritional indicators during cooking.

[0013] Optionally, in the case of an abnormality in the upper pressure signal detection function, executing the second cooking program includes: controlling the cooking utensil to enter a heating stage, heating the cooking utensil according to a preset power, and controlling the cooking utensil to enter a stamping stage when the temperature collected by the bottom temperature sensor reaches a preset boiling point; in the stamping stage, when the temperature collected by the bottom temperature sensor reaches a pressure holding temperature, controlling the cooking utensil to enter a pressure holding stage, and after the pressure holding stage ends, controlling the cooking utensil to enter an exhaust stage; in the exhaust stage, determining the internal pressure of the cooking utensil according to the internal temperature of the cooking utensil and a preset boiling point, and controlling the cooking utensil to end the exhaust stage when there is no pressure difference between the internal pressure of the cooking utensil and the external pressure of the cooking utensil. The second cooking program implements cooking based on a preset boiling point temperature, determines an estimated pressure inside the cooking utensil 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, so that the cooking of food can be completed even in the case of an abnormality in the upper pressure signal detection function.

[0014] Optionally, during the pressure holding stage and the exhaust stage, if the reason for the abnormality of the upper pressure signal detection function is the second fault, the temperature inside the cooking appliance is obtained from the signal detection module; if the reason for the abnormality of the upper pressure signal detection function is the first fault, the temperature inside the cooking appliance is obtained from the bottom temperature sensor. In the case of an abnormality of the upper pressure signal detection function, the bottom temperature sensor is used to control the temperature in the early stage. After ensuring the pressure holding stage and the exhaust stage after the upper pressure, in the case of the second fault, the top sensor in the signal detection module can also intervene to improve the efficiency of cooking. In the case of the first fault, the temperature is still controlled by the bottom sensor to ensure successful cooking.

[0015] According to another aspect of the present application, a cooking appliance is provided, and a control module of the cooking appliance is used to execute the above cooking control method.

[0016] According to another aspect of the present application, an electronic device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to execute a signal detection method or a cooking control method through the computer program.

[0017] Through the present application, the following steps are adopted: obtaining a sampling signal value; judging 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 the preset boiling point on the 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; when the sampling signal value is less than the signal threshold, determining that the pressure signal is not detected, and querying the temperature corresponding to the sampling signal value through the first curve to obtain the temperature inside the cooking appliance; when the sampling signal value is greater than or equal to the signal threshold, determining that the pressure signal is detected, and querying the temperature corresponding to the sampling signal value through the second curve to obtain the temperature inside the cooking appliance, wherein the second curve indicates the relationship between the sampling signal value and the temperature value of the cooking appliance in the pressure state, solving the problem that it is difficult for a split electric pressure cooker in the related art to accurately detect the pressure signal, and in order to ensure that the pot does not overflow, the cooking efficiency is low. Thus, the effect of simultaneously detecting the temperature and pressure state inside the cooking appliance is achieved, laying a foundation for improving cooking quality and cooking efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0019] Figure 1 is a flow chart of a signal detection method according to an embodiment of the present application;

[0020] Figure 2 is a schematic diagram of a cooking curve according to an embodiment of the present application;

[0021] Figure 3 is a flowchart of an optional signal detection method according to an embodiment of the present application;

[0022] Figure 4 is a flow chart of a cooking control method according to an embodiment of the present application;

[0023] Figure 5 is a flow chart of an optional cooking control method according to an embodiment of the present application;

[0024] Figure 6 is a schematic diagram of a signal detection module according to an embodiment of the present application;

[0025] Figure 7 is a schematic diagram of a cooking control device according to an embodiment of the present application;

[0026] Figure 8 is a schematic diagram of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0030] According to an embodiment of the present application, a signal detection method is provided, which is applied to a cooking appliance.

[0031] When it needs to be explained, the cooking utensil can be a split cooking utensil, such as a split electric pressure cooker. The signal detection module arranged on the cooking utensil includes a wireless upper module and a wireless lower module. The wireless upper module can be arranged on the cover of the split cooking utensil, and the wireless lower module can be arranged on the main body of the split cooking utensil. When the cover of the cooking utensil is closed, the wireless lower module charges the wireless upper module by wireless charging. After the wireless upper module is powered on, the sampling signal value is collected and the sampling signal value is sent to the wireless lower module by wireless communication. The wireless lower module determines the internal temperature and internal pressure state of the cooking utensil according to the sampling signal value.

[0032] Figure 1 FIG. 1 is a flow chart of a signal detection method according to an embodiment of the present application. Figure 1 As shown, the method comprises the following steps:

[0033] Step S102, obtaining a sampled signal value.

[0034] The sampling signal value is the voltage division value of the sampling resistor. The voltage division value of the sampling resistor changes with the temperature inside the cooking utensil. Therefore, the sampling signal value can represent the temperature of the cooking utensil.

[0035] When the cooking appliance is in an unpressurized state (the internal pressure is close to or equal to normal pressure) or in a pressurized state (the internal pressure is higher than normal pressure), the voltage divider value of the sampling resistor changes differently with temperature, so the sampling signal value can represent the pressure state of the cooking appliance. The chip of the wireless upper module sends the sampling signal value to the wireless lower module. Since the sampling signal value can be used to represent 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 sampling signal value.

[0036] Step S104, determining whether the sampled signal value is greater than a signal threshold, wherein the signal threshold is greater than or equal to a 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.

[0037] 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 cross the signal threshold. The pressure state inside the cooking appliance can be determined by judging whether the sampling signal value is greater than the signal threshold.

[0038] Since the cooking appliance jumps from a non-pressurized state to a pressurized state, the temperature inside the cooking appliance will reach the pressurized temperature. During the test phase, the sampling signal value and temperature value of the cooking appliance in the non-pressurized state can be counted, and a first curve is formed by fitting the sampling signal value and temperature value in the non-pressurized state. The sampling signal value on the first curve that is greater than the pressurized temperature is determined as the signal threshold. The pressurized temperature is the boiling point temperature. The sampling signal value on the first curve that is greater than the boiling point temperature can be determined as the signal threshold. It should be noted that, ideally, the cooking appliance reaches the pressurized state when the temperature inside reaches the plain boiling point temperature. The plain boiling point temperature is 99°C. The pressurized state is reached when 99°C is found on the first curve, completely crossing the maximum sampling signal value of the first curve, and immediately switching to the second curve. The sampling signal value corresponding to 99°C in the second curve will also cross the maximum sampling signal value of the first curve. Therefore, the signal threshold can be the sampling signal value corresponding to the plain boiling point temperature. Figure 2 is a schematic diagram of a cooking curve according to an embodiment of the present application, such as Figure 2As shown, the blue dotted 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 value corresponding to the point after point A can be determined as the signal threshold. For example, the plain boiling point is 99°C, and the sampling signal value corresponding to 104°C on the first curve can be determined as the signal threshold.

[0039] Step S106, when the sampling signal value is less than the signal threshold, it is determined that no pressure signal is detected, and the temperature corresponding to the sampling signal value is queried through the first curve to obtain the temperature inside the cooking appliance.

[0040] The sampling signal value is less than the signal threshold, indicating that the sampling signal value has not changed, and the interior of the cooking appliance is still in a non-pressurized state. It is determined that no pressure signal is detected. When no pressure signal is detected, the first curve is used to query the temperature inside the cooking appliance. The temperature corresponding to the sampling signal value is queried on the first curve to obtain the temperature inside the cooking appliance.

[0041] Step S108, when the sampling signal value is greater than or equal to the signal threshold, it is determined that an upward pressure signal is detected, and the temperature corresponding to the sampling signal value is queried through the second curve to obtain the temperature inside the cooking appliance, wherein the second curve indicates the relationship between the sampling signal value and the temperature value of the cooking appliance in the upward pressure state.

[0042] If the sampling signal value is greater than or equal to the signal threshold, it means that the sampling signal value has changed, and the inside of the cooking appliance is in an upward pressure state, and it is determined that an upward pressure signal has been detected. In the test phase, the sampling signal value and temperature value of the cooking appliance in the upward pressure state can be counted, and a second curve can be fitted by the sampling signal value and temperature value in the upward pressure state. When the upward pressure signal is detected, the second curve is used when querying the temperature inside the cooking appliance, and the temperature corresponding to the sampling signal value is queried on the second curve to obtain the temperature inside the cooking appliance. Figure 2 As shown, the black solid line is the second curve, and the red dotted 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.

[0043] The signal detection method provided by the embodiment of the present application obtains the sampling signal value; determines whether the sampling 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 sampling signal value and the temperature value of the cooking appliance in the non-pressurized state; when the sampling signal value is less than the signal threshold, it is determined that the pressure signal is not detected, and the temperature corresponding to the sampling signal value is queried through the first curve to obtain the temperature inside the cooking appliance; when the sampling signal value is greater than or equal to the signal threshold, it is determined that the pressure signal is detected, and the temperature corresponding to the sampling signal value is queried through the second curve to obtain the temperature inside the cooking appliance, wherein the second curve indicates the relationship between the sampling signal value and the temperature value of the cooking appliance in the pressure state, which solves the problem that the split electric pressure cooker in the related art is difficult to accurately detect the pressure signal, and the cooking efficiency is low in order to ensure that the pot does not overflow. The pressure state in the pot can be determined according to the relationship between the sampling signal value and the signal threshold, and the temperature value corresponding to the sampling signal value is queried according to the curve corresponding to the pressure state in the pot to obtain the temperature inside the cooking appliance, thereby achieving the effect of simultaneously detecting the temperature and pressure state inside the cooking appliance, laying a foundation for improving cooking quality and cooking efficiency.

[0044] When the internal temperature and internal pressure state of the cooking appliance are detected by the signal detection module, it is also possible to determine whether the upper pressure signal detection function of the signal detection module is normal. Optionally, in the signal detection method provided in the embodiment of the present application, after determining whether the sampling signal value is greater than the signal threshold, the method further includes: when the sampling signal value is less than the signal threshold, querying the temperature corresponding to the sampling 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 sampling signal value of the preset temperature value on the first curve is less than the signal threshold; when the queried temperature value is greater than the preset temperature value, it is determined that the upper pressure signal detection function is abnormal.

[0045] It should be noted that, when the sampling signal value is less than the signal threshold, the cooking appliance is determined to be in a non-pressurized state, and the temperature inside 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 plain boiling point, 99°C) while the cooking appliance is not pressurized, when the temperature queried through the first curve is already greater than the preset boiling point, if the sampling signal value is still less than the signal threshold, it means that the pressurized state of the cooking appliance cannot be sensed, and an abnormality has occurred in the pressurization signal detection function.

[0046] Through this implementation, when the sampling signal value is less than the signal threshold, the relationship between the temperature queried by the first curve and the boiling point temperature is used to determine whether the upper pressure signal detection function is normal, laying the foundation for accurately collecting the internal temperature and internal pressure state of the cooking appliance.

[0047] The reasons for the abnormality of the upper pressure signal detection function may be different. Optionally, in the signal detection method provided in the embodiment of the present application, when the queried temperature value is greater than the preset temperature value, after determining that the upper pressure signal detection function is abnormal, the method also includes: after the cooking appliance enters the pressure holding stage, judging whether the sampled signal value is greater than the signal threshold; when the sampled signal value is less than the signal threshold, determining that the cause of the abnormality of the upper pressure signal detection function is the first fault; when the sampled signal value is greater than or equal to the signal threshold, determining that the cause of the abnormality of the upper pressure signal detection function is the second fault.

[0048] It should be noted that, under the second fault, the voltage-dividing resistor of the sampling resistor is short-circuited, and since the cooking appliance is actually in an upper pressure state during the pressure-holding stage, the sampling signal value will be greater than the threshold value. Therefore, if the sampling signal value is detected to be greater than or equal to the signal threshold value during the pressure-holding stage, it can be determined that the cause of the abnormality of the upper pressure signal detection function is the second fault. Under the first fault, even if the cooking appliance is actually in an upper pressure state during the pressure-holding stage, the voltage-dividing resistor will not be short-circuited, and the sampling signal value will not be greater than the threshold value. Therefore, if the sampling signal value is detected to be less than the signal threshold value during the pressure-holding stage, it can be determined that the cause of the abnormality of the upper pressure signal detection function is the first fault.

[0049] Through this embodiment, the fault type is determined by utilizing the size relationship between the sampling signal value when the cooking appliance enters the pressure holding stage and the signal threshold, thereby achieving the effect of accurately determining the abnormal cause of the upper pressure signal detection function.

[0050] In addition to detecting whether the detection function of the pressure signal of the signal detection module is normal, it is also necessary to detect whether the signal detection function of the signal detection module as a whole is faulty. Optionally, in the signal detection method provided in the embodiment of the present application, before determining whether the sampling signal value is greater than the signal threshold, the method also includes: determining whether the sampling signal value is greater than or equal to the maximum value, and determining whether the sampling signal value is less than or equal to the minimum value, wherein the signal threshold is greater than the minimum value, and the signal threshold is less than the maximum value; when 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 is faulty; when the sampling signal value is greater than the minimum value and less than the maximum value, determining that the signal detection function is not faulty, and executing the step of determining whether the sampling signal value is greater than the signal threshold.

[0051] Among them, the minimum value can be the sampling signal value when the sampling resistor cannot divide the voltage, and the maximum value can be the sampling signal value when the sampling resistor divides the entire voltage. When the signal detection function is normal, the sampling resistor can divide the voltage to part of the power supply voltage. Therefore, when the sampling 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 a fault.

[0052] Through this embodiment, it is first determined whether the detection signal detection function as a whole has a fault based on the relationship between the sampling signal value and the maximum and minimum values. When it is preliminarily detected that the signal detection function as a whole has no fault, the signal detection function is used to detect the internal temperature and internal pressure state of the cooking appliance, thereby laying the foundation for accurately determining the temperature and pressure state.

[0053] The embodiment of the present application also provides an optional signal detection method, which is applied to a cooking appliance, including:

[0054] Step 1: Obtain the voltage divider value of the sampling resistor to obtain the sampling signal value, wherein 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 induction switch, the thermistor is arranged inside the cooking appliance, and the on-off state of the induction switch is determined by the pressure state inside the cooking appliance.

[0055] It should be noted that a signal detection module is provided on the cooking utensil, and the signal detection module includes a wireless upper module and a wireless lower module. The sampling resistor, thermistor and voltage-dividing resistor are provided in the wireless upper module of the signal detection module. The chip of the wireless upper module collects the voltage-dividing value of the sampling resistor to obtain the sampling signal value. Among them, the thermistor is used to sense the temperature inside the cooking utensil. The resistance value of the thermistor divided by the sampling resistor will change with the temperature inside the cooking utensil, and the voltage-dividing value of the sampling resistor will also change with the temperature, so the sampling signal value can represent the temperature of the cooking utensil. Among them, the induction switch is used to sense the pressure state inside the cooking utensil. For example, when the cooking utensil is in a non-pressurized state (the internal pressure is close to or equal to the normal pressure), the induction switch is disconnected, and when the cooking utensil is in a pressurized state (the internal pressure is higher than the normal pressure), the induction switch is turned on. Since the induction switch is in an open state or a closed state, the law of the voltage-dividing value of the thermistor changing with the temperature is different, and the law of the voltage-dividing value of the sampling resistor changing with the temperature is different, so the sampling signal value can represent the pressure state of the cooking utensil.

[0056] Step 2: Determine whether the sampled signal value is greater than a signal threshold, wherein the signal threshold is the signal value corresponding to any temperature value between 125°C and 130°C on the first curve, and the first curve indicates the relationship between the sampled signal value and the temperature value when the cooking appliance is not pressed.

[0057] The chip of 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 jump from the non-pressurized state to the pressurized state, and the induction switch will change from the open state to the closed state, short-circuiting the voltage-dividing resistor, so that the sampled signal value will jump and cross 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.

[0058] Since the cooking appliance jumps from the non-pressurized state to the pressurized state, the temperature inside the cooking appliance will reach the pressurized temperature. The sampling signal value and temperature value of the cooking appliance in the non-pressurized state can be counted during the test phase. The sampling signal value and temperature value in the non-pressurized state are fitted into a first curve. The sampling signal value on the first curve that is greater than the pressurized temperature is determined as the signal threshold. The pressurized temperature is the boiling point temperature. The sampling signal value on the first curve that is greater than the boiling point temperature can be determined as the signal threshold. Ideally, the temperature inside the cooking appliance reaches the plain boiling point temperature and reaches the pressurized state. The plain boiling point temperature is 99°C. The pressure state is reached when 99°C is found on the first curve, completely exceeding the maximum sampling signal value of the first curve, and immediately switching to the second curve. The sampling signal value corresponding to 99°C in the second curve will also exceed the maximum sampling signal value of the first curve. However, considering that the induction switch may fail, when checking the first curve until 99, if the induction switch has failed, the voltage divider resistor will not be short-circuited by the induction switch in the upper pressure state. If the signal threshold is the sampling signal value corresponding to 99°C on the first curve, when the sampling signal value is greater than the signal threshold, it will immediately switch from the first curve to the second curve, and query the temperature through the second curve. The queried temperature will become significantly smaller and deviate from the actual temperature, causing a misjudgment of the temperature. In order to avoid the influence of the failure of the induction switch on the judgment of the temperature and pressure state inside the cooking appliance, in the signal detection method provided in the embodiment of the present application, the signal value corresponding to any temperature value between 125°C and 130°C on the first curve is determined as the signal threshold.

[0059] If the rated pressure of the pressure limiting valve is 100 kPa, the internal temperature of the cooking utensil under 100 kPa corresponds to 120°C. If the rated pressure of the pressure limiting valve is 112 kPa, the internal temperature of the cooking utensil under 112 kPa corresponds to 125°C. The probability that the internal temperature of the cooking utensil is greater than 125°C is extremely small and will not be greater than 130°C. The sampling signal value corresponding to the temperature value between 125°C and 130°C on the first curve can be determined as the signal threshold. Under normal circumstances, the cooking utensil has been pressurized at 99°C. After the pressure is pressed, 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 of 99°C is only 60, the sampling signal value corresponding to 99°C on the first curve may be only 40. The sampling signal value 40 jumps to 100 and is definitely greater than the value corresponding to the point of 60. This means that when the sampling signal value is greater than 60, the curve should be switched when determining the temperature inside the cooking utensil. In this embodiment, the sampling signal value corresponding to the temperature value between 125°C and 130°C on the first curve is determined as the signal threshold. The first curve from the starting point to the point corresponding to the signal threshold is the use range of the first curve. The temperature corresponding to the signal threshold lags the sampling signal value corresponding to the boiling point temperature on the first curve, and lags the sampling signal value corresponding to the temperature that cannot appear inside the cooking utensil, so as to ensure that the internal temperature of the cooking utensil can be accurately checked even when the induction switch fails. It can avoid setting the signal threshold too small. In the case of failure of the induction switch, the cooking utensil has not been pressed up when the sampling signal value reaches the signal threshold, and the temperature is immediately queried through the second curve, resulting in a significant decrease in temperature, resulting in the problem of misjudgment of temperature.

[0060] Step three, when the sampling signal value is less than the signal threshold, it is determined that no pressure signal is detected, and the temperature corresponding to the sampling signal value is queried through the first curve to obtain the temperature inside the cooking appliance.

[0061] The sampling signal value is less than the signal threshold, indicating that the sampling signal value has not changed, the sensing switch has not changed from the open state to the closed state, and the interior of the cooking appliance is still in a non-pressurized state. It is determined that no pressure signal is detected. When no pressure signal is detected, the first curve is used to query the temperature inside the cooking appliance. The temperature corresponding to the sampling signal value is queried on the first curve to obtain the temperature inside the cooking appliance.

[0062] Step four, when the sampling signal value is greater than or equal to the signal threshold, it is determined that the upper pressure signal is detected, and the temperature corresponding to the sampling signal value is queried through the second curve to obtain the temperature inside the cooking appliance, wherein the second curve indicates the relationship between the sampling signal value and the temperature value of the cooking appliance in the upper pressure state.

[0063] If the sampling signal value is greater than or equal to the signal threshold, it means that the sampling signal value has jumped, the induction switch has changed from the open state to the closed state, and the inside of the cooking appliance is in an upward pressure state, and it is determined that the upward pressure signal is detected. During the test phase, the sampling signal value and temperature value of the cooking appliance in the upward pressure state can be counted, and a second curve can be fitted by the sampling signal value and temperature value in the upward pressure state. When the upward pressure signal is detected, the second curve is used when querying the temperature inside the cooking appliance, and the temperature corresponding to the sampling signal value is queried on the second curve to obtain the temperature inside the cooking appliance. Figure 2 As shown, the black solid line is the second curve, and the red dotted 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.

[0064] The signal detection method provided by the embodiment of the present application obtains the sampling signal value by acquiring the voltage division value of the sampling resistor, wherein the sampling resistor, the thermistor and the voltage division resistor are connected in series between the power supply terminal and the ground terminal, the voltage division resistor is connected in parallel with an induction switch, the thermistor is arranged inside the cooking appliance, and the on-off state of the induction switch is determined by the pressure state inside the cooking appliance; it is judged whether the sampling 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 sampling signal value and the temperature value of the cooking appliance in the non-pressurized state; when the sampling signal value is less than the signal threshold, it is determined that the pressure-up signal is not detected, and the temperature corresponding to the sampling signal value is queried through the first curve to obtain the temperature inside the cooking appliance; when the sampling signal value is greater than or equal to the signal threshold, it is determined that the pressure-up signal is detected, and the temperature corresponding to the sampling signal value is queried through the second curve to obtain the temperature inside the cooking appliance, wherein the second curve indicates the relationship between the sampling signal value and the temperature value of the cooking appliance in the pressure-up state, which solves the problem that it is difficult to accurately detect the pressure-up signal in the split electric pressure cooker in the related art, and the cooking efficiency is low in order to ensure that the pot does not overflow. An induction switch is connected in parallel with the voltage divider resistor connected in series with the sampling resistor and the thermistor. The on and off state of the induction switch is determined by the pressure state inside the cooking appliance. The pressure state in 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 is queried based on the curve corresponding to the pressure state in the pot to obtain the temperature inside the cooking appliance, thereby achieving the effect of simultaneously detecting the temperature and pressure state inside the cooking appliance, laying a foundation for improving cooking quality and cooking efficiency.

[0065] When the internal temperature and internal pressure state of the cooking appliance are detected by the signal detection module, it can also be determined whether the upper pressure signal detection function of the signal detection module is normal. Optionally, in the signal detection method provided in the embodiment of the present application, after determining whether the sampling signal value is greater than the signal threshold, the method further includes: when the sampling signal value is less than the signal threshold, querying the temperature corresponding to the sampling 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 ranges from 103°C to 110°C; when the queried temperature value is greater than the preset temperature value, determining that the upper pressure signal detection function of the signal detection module is abnormal.

[0066] It should be noted that when the sampling signal value is less than the signal threshold, it is determined that the cooking appliance is in a non-pressurized state. The temperature inside the cooking appliance is queried through the first curve. Since it is impossible that the temperature inside the cooking appliance is greater than the preset boiling point (which can be the plain boiling point, 99°C) and the cooking appliance has not yet been pressurized, when the temperature queried through the first curve is greater than the preset boiling point, if the sampling signal value is still less than the signal threshold, it means that the sensor switch cannot sense the pressurized state of the cooking appliance, and the pressurized signal detection function has been abnormal. In order to avoid detection errors, a margin can be added based on the plain boiling point, and any temperature between 103°C and 110°C can be used as the preset temperature value, for example, 105°C. When the temperature inside the cooking appliance is queried through the first curve, if it is found that the sampling signal value of 105°C has not jumped above the signal threshold, it means that the cooking appliance is in a pressurized state and the sensor switch has not detected the pressurized signal, the sensor switch has failed, and the pressurized signal detection function of the signal detection module is abnormal.

[0067] The reason for the abnormality of the upper pressure signal detection function may be that the induction switch is short-circuited or the induction switch is open. Optionally, in the signal detection method provided in the embodiment of the present application, when the queried temperature value is greater than the preset temperature value, after determining that the upper pressure signal detection function of the signal detection module is abnormal, the method also includes: after the cooking appliance enters the pressure holding stage, judging whether the sampled signal value is greater than the signal threshold; when the sampled signal value is less than the signal threshold, determining that the reason for the abnormality of the upper pressure signal detection function is that the induction switch is open; when the sampled signal value is greater than or equal to the signal threshold, determining that the reason for the abnormality of the upper pressure signal detection function is that the induction switch is short-circuited.

[0068] It should be noted that when the induction switch is effective, if the cooking appliance is in an upper pressure state, the induction switch will be closed and the voltage-dividing resistor will be short-circuited. When the induction switch is short-circuited, the voltage-dividing resistor will be short-circuited. Since the cooking appliance is actually in an upper pressure state during the pressure-holding stage, the sampling signal value will be greater than the threshold value when the induction switch is short-circuited. Therefore, if the sampling signal value is detected to be greater than or equal to the signal threshold value during the pressure-holding stage, it can be determined that the reason for the abnormality of the upper pressure signal detection function is the short circuit of the induction switch. When the induction switch is open, even if the cooking appliance is actually in an upper pressure state during the pressure-holding stage, the voltage-dividing resistor will not be short-circuited by the induction switch, and the sampling signal value will not be greater than the threshold value. Therefore, if the sampling signal value is detected to be less than the signal threshold value during the pressure-holding stage, it can be determined that the reason for the abnormality of the upper pressure signal detection function is the open circuit of the induction switch.

[0069] Through this embodiment, the short circuit and open circuit of the induction switch in the upper pressure state have different effects on the voltage-dividing resistor. The relationship between the sampling signal value when the cooking appliance enters the pressure holding stage and the signal threshold is used to determine whether the induction switch is short-circuited or open-circuited, thereby achieving the effect of accurately determining the abnormal cause of the upper pressure signal detection function.

[0070] In addition to detecting whether the detection function of the pressure signal of the signal detection module is normal, it is also necessary to detect whether the signal detection module as a whole is faulty. Optionally, in the signal detection method provided in the embodiment of the present application, before determining whether the sampling signal value is greater than the signal threshold, the method also includes: determining whether the sampling signal value is greater than or equal to the maximum value, and determining whether the sampling signal value is less than or equal to the minimum value, wherein the signal threshold is greater than the minimum value, and the signal threshold is less than the maximum value; when 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 module is faulty; when the sampling signal value is greater than the minimum value and less than the maximum value, determining that the signal detection module is not faulty, and executing the step of determining whether the sampling signal value is greater than the signal threshold.

[0071] Among them, the minimum value can be the sampling signal value when the sampling resistor cannot divide the voltage, and the maximum value can be the sampling signal value when the sampling resistor divides the entire voltage. When the signal detection module is normal, the sampling resistor can divide the voltage to part of the power supply voltage. Therefore, when the sampling 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.

[0072] Through this embodiment, it is first determined whether the detection signal detection module as a whole is faulty based on the relationship between the sampling signal value and the maximum and minimum values. When it is preliminarily detected that the signal detection module as a whole is not faulty, the signal detection module is used to detect the internal temperature and internal pressure state of the cooking appliance, thereby laying the foundation for accurately determining the temperature and pressure state.

[0073] The present application also provides an optional signal detection method. Figure 3 is a flow chart of an optional signal detection method according to an embodiment of the present application; Figure 3 As shown, the method includes:

[0074] The signal detection module is called to obtain the sampling signal value. The sampling signal value can be the voltage divider value of the sampling resistor, which is the AD value. The sampling resistor, the NCT 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 a reed switch. The NCT thermistor is arranged inside the cooking appliance. The on-off state of the reed switch is determined by the upper pressure signal of the cooking appliance.

[0075] Determine whether the AD value is greater than the maximum value or less than the minimum value. If the AD value is greater than the maximum value or less than the minimum value, it indicates that the signal detection module is faulty, and the fault flag bit NTC_Err is set to 1. If the AD value is between the minimum value and the maximum value, it indicates that the signal detection module is normal, and determine whether the AD value is greater than the threshold.

[0076] When the AD value is greater than the threshold, it means that the cooking appliance has been pressurized, the fault flag NTC_Err is set to 0, and the pressurization signal flag Pre_Flg is set to 1, indicating that it has been pressurized. The top temperature of the cooking appliance is queried through the pressurization table, where the pressurization table is a relationship table between the top temperature of the cooking appliance in the pressurized state and the AD value.

[0077] When the AD value is less than the threshold, it means that the cooking appliance is not pressed, the fault flag NTC_Err is set to 0, and the pressure signal flag Pre_Flg is set to 0, indicating that it is not pressed. The top temperature of the cooking appliance is queried through the no-pressurization table, where the no-pressurization table is a relationship table between the top temperature of the cooking appliance in the no-pressurization state and the AD value.

[0078] When the AD value is less than the threshold, it is further determined whether the top temperature of the cooking utensil queried through the non-pressurized table is greater than 105 degrees. When 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. When 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.

[0079] Finally, the signal detection module outputs the internal temperature of the cooking appliance, and outputs a module fault flag, an upper pressure signal fault flag, and an upper pressure signal flag.

[0080] The embodiment of the present application also provides a cooking control method, which is applied to a cooking appliance having a signal detection module. Figure 4 is a flow chart of a cooking control method according to an embodiment of the present application. Figure 4As shown, the method comprises the following steps:

[0081] Step S402, 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 above-mentioned signal detection method.

[0082] The signal detection module stores a pressure signal fault flag bit Pre_Err. When Pre_Err is set to 1, it indicates that the pressure signal detection function is abnormal. When Pre_Err is set to 0, it indicates that the pressure signal detection function is normal. The signal detection module can accurately detect the pressure state and temperature inside the cooking appliance. When the pressure signal cannot be detected, it indicates that the inside of the cooking appliance is in a non-pressure state, and the temperature is queried through the temperature curve in the non-pressure state. When the pressure signal is detected, it indicates that the inside of the cooking appliance is in a pressure state, and the temperature is queried through the temperature curve in the pressure state.

[0083] Step S404, when the upper pressure signal detection function is normal, execute the first cooking program to cook the food inside the cooking utensil, wherein the first cooking program calls the temperature, pressure state and actual boiling point temperature detected by the signal detection module to control the cooking utensil to cook.

[0084] Among them, the first cooking program implements cooking based on the actual boiling point temperature. When the upper pressure signal detection function is normal, it means that the signal detection module can accurately detect the temperature and upper pressure signal inside the cooking utensil. In the exhaust stage, the stop rod falls down and there is no pressure difference between the inside and outside of the cooking utensil. The temperature when the upper pressure signal mark indicates that there is no upper pressure signal is the actual boiling point temperature. It should be noted that the boiling point will not fluctuate in the same area. Users using the same cooking utensil in different areas will cause fluctuations in the boiling point. In order to accurately detect the boiling point, the actual boiling point is updated in the exhaust stage of each cooking of the cooking utensil. It should be noted that in the case of a failure in the upper pressure information detection, the boiling point detection function is considered to be invalid, and the boiling point is no longer updated. In addition, it should be noted that the actual boiling point temperature can be not only the temperature when the upper pressure signal of the cooking utensil disappears in the exhaust stage of the last cooking, but also a preset temperature. For example, the actual boiling point temperature can be preset before leaving the factory according to the shipping area to distinguish between the plain boiling point and the plateau boiling point.

[0085] After obtaining the actual boiling point temperature, the actual pressure inside the cooking utensil is determined based on the real-time detected temperature and the actual boiling point temperature, and the actual pressure of each working stage of the cooking program is controlled to be close to the working pressure of the corresponding stage, thereby achieving the effect of accurately controlling the pressure in the pot and efficient cooking.

[0086] Step S406, when the pressure signal detection function is abnormal, execute the second cooking program to cook the food inside the cooking utensil, 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.

[0087] Among them, the second cooking program implements cooking based on a preset boiling point temperature. The preset boiling point temperature can be a plain boiling point temperature, such as 99°C. In the case of an abnormality in the upper pressure signal detection function, it means that the signal detection module is difficult to accurately detect the upper pressure signal of the cooking utensil, and thus cannot accurately determine the actual boiling point and execute the second cooking program. In the case of an abnormality in the upper pressure signal detection function, the accuracy of the measurement of the internal temperature of the cooking utensil will also be affected. Therefore, the temperature inside the cooking utensil is collected by the bottom temperature sensor to control the cooking utensil for cooking. In each working stage of the cooking program, the estimated pressure inside the cooking utensil is determined based on the temperature detected in real time by the detection module and the preset boiling point temperature, and the estimated pressure of each working stage of the cooking program is controlled to be close to the working pressure of the corresponding stage, so that the cooking of food can be completed even when the upper pressure signal detection function is abnormal.

[0088] The cooking control method provided by the embodiment of the present application determines 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 utensil in real time according to the above-mentioned signal detection method; when the pressure signal detection function is normal, the first cooking program is executed, wherein the first cooking program calls the temperature and pressure state detected by the signal detection module to control the cooking utensil to cook; when the pressure signal detection function is abnormal, the second cooking program is executed, 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, thereby solving the problem that the split electric pressure cooker in the related art is difficult to accurately detect the pressure signal, and the cooking efficiency is low in order to ensure that the pot does not overflow. When the pressure signal detection function of the signal detection module is normal, the temperature and pressure state are called in real time to control the cooking utensil to cook, thereby achieving the effect of improving the cooking quality and cooking efficiency. When the pressure signal detection function of the signal detection module is abnormal, the cooking utensil is controlled to cook according to the temperature collected by the bottom temperature sensor of the cooking utensil, thereby achieving the effect of ensuring that the cooking can be completed normally.

[0089] Optionally, in the cooking control method provided in the embodiment of the present application, when the upper pressure signal detection function is normal, executing the first cooking program, and cooking the food inside the cooking utensil includes: controlling the cooking utensil to enter a heating stage, obtaining an upper pressure signal mark bit from a signal detection module, and controlling the cooking utensil to enter a pressing stage when the upper pressure signal mark bit indicates the presence of an upper pressure signal; in the pressing stage, obtaining the temperature inside the cooking utensil from the signal detection module, and when the temperature inside the cooking utensil reaches the pressure holding temperature, controlling the cooking utensil to enter a pressure holding stage, and after the pressure holding stage ends, controlling the cooking utensil to enter an exhaust stage; in the exhaust stage, obtaining an upper pressure signal mark bit from the signal detection module, and when the upper pressure signal mark bit indicates the absence of an upper pressure signal, controlling the cooking utensil to end the exhaust stage.

[0090] For example, during the heating stage of the cooking appliance, if the upper pressure signal mark indicates the presence of an upper pressure signal, it means that the cooking appliance has reached the upper pressure state or is close to the upper pressure state (there may be cold air in the pot during the heating stage, causing the upper pressure signal to be inaccurately read), and the pressing stage can be entered to increase the heating power to ensure that the pressure can be rushed up and reach the pressure holding temperature (that is, the pressure in the pot reaches the target pressure indicated in the pressure holding stage), then enter the pressure holding stage, and after the pressure holding time is reached, the pressure holding stage ends and enters the exhaust stage. During the exhaust stage, the upper pressure signal mark is read. If the upper pressure signal mark indicates the absence of an upper pressure signal, it means that there is no pressure difference between the inside and outside of the cooking appliance, and the user can open the lid to eat. The exhaust stage can be ended and the lid opening signal can be output.

[0091] It should be noted that in the related art, it is difficult to accurately obtain the boiling point of split cooking utensils. The preset boiling point is the plateau boiling point. In order to avoid overflowing, the exhaust will not be very aggressive. The exhaust is performed at the plateau boiling point. At the end of the exhaust stage, it is difficult to detect when the upper pressure signal disappears. It is difficult to output the cover opening signal when the stop rod just falls down and there is no pressure difference inside and outside the cooking utensil. The cover opening signal can only be output when the inside of the cooking utensil reaches a conservative temperature. The exhaust speed is slow and the user has a long waiting time for exhaust. However, this embodiment can accurately measure the actual boiling point, effectively control the pressure in the pot based on the actual boiling point, flexibly adjust the exhaust, speed up the exhaust speed without overflowing the pot, and output the cover opening signal immediately after detecting that the upper pressure signal disappears, thereby achieving the effect of improving the exhaust efficiency.

[0092] In order to improve the cooking quality, optionally, in the cooking control method provided in the embodiment of the present application, when the cooking function of the cooking utensil is soup or porridge, the following operations are performed during the pressure holding stage: 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 holding stage by controlling the heating program, and the exhaust operation is performed at preset time intervals until the pressure holding stage ends.

[0093] Specifically, when the cooking appliance is cooking food, the signal detection module is always in operation to obtain the internal temperature of the cooking appliance in real time and accurately, calculate the temperature difference between the internal temperature and the boiling point temperature, and use the product of the temperature difference and 5kPa as the actual pressure inside the cooking appliance. During the pressure holding stage, the internal pressure of the cooking appliance is controlled to be near the working pressure of the pressure holding stage by controlling the heating program. The working pressure of the pressure holding stage under different cooking functions is different. For example, the working pressure of soup is 70kPa, and the working pressure of porridge is 50kPa. Controlling the internal pressure of the cooking appliance is to control the internal temperature of the cooking appliance. For example, the working pressure of porridge during the pressure holding stage is 50kPa. The internal temperature of the cooking appliance is controlled at about 110°C in plain areas and at about 103°C in plateau areas.

[0094] It should be noted that in order to improve the nutritional indicators of porridge and soup, exhaust operations can be intervened during the normal cooking process. For example, after the porridge and soup functions enter the pressure holding stage, exhaust is performed during the pressure holding stage to ensure sufficient boiling, thereby making the cooking more complete and improving the nutritional indicators. Different exhaust volumes can also be flexibly set according to different functions. For example, compared with porridge, the exhaust volume of soup is larger and the boiling is more intense.

[0095] In this embodiment, accurate boiling point detection is achieved through the signal detection module, and the internal temperature of the cooking appliance can be controlled by the actual boiling point during the pressure holding stage to achieve effective cooking. In addition, exhaust operations are added to the porridge and soup cooking functions to solve the problems of insufficient boiling and low nutritional indicators during cooking.

[0096] Optionally, in the cooking control method provided in the embodiment of the present application, when the upper pressure signal detection function is abnormal, a second cooking program is executed to cook the food inside the cooking utensil, including: controlling the cooking utensil to enter a heating stage, heating the cooking utensil according to a preset power, and when the temperature collected by the bottom temperature sensor reaches a preset boiling point, controlling the cooking utensil to enter a stamping stage; in the stamping stage, when the temperature collected by the bottom temperature sensor reaches the pressure holding temperature, controlling the cooking utensil to enter a pressure holding stage, and after the pressure holding stage ends, controlling the cooking utensil to enter an exhaust stage; in the exhaust stage, determining the internal pressure of the cooking utensil according to the internal temperature of the cooking utensil and a preset boiling point, and controlling the cooking utensil to end the exhaust stage when there is no pressure difference between the internal pressure of the cooking utensil and the external pressure of the cooking utensil.

[0097] It should be noted that in the case of an abnormality in the upper pressure signal detection function, it is difficult for the signal detection module to accurately detect the upper pressure signal, and it is also difficult to accurately measure the temperature inside the cooking utensil. The temperature is measured by the bottom temperature sensor and low-power heating is performed. During the heating stage, low-power heating is continued. For example, the inside of the cooking utensil is controlled to maintain 80°C for a period of time, heated to 90°C, and then maintained for a period of time. The temperature is slowly increased, and the stamping stage is entered when the temperature reaches the preset boiling point. The stamping stage will not be too aggressive, and low-power heating will continue until the program reaches the pressure holding stage. After the pressure holding time is reached, the pressure holding stage ends and the exhaust stage begins. The exhaust is ended when there is no pressure difference between the internal pressure and the external pressure of the cooking utensil.

[0098] It should be noted that the second cooking program is an abnormal cooking program, and the boiling point detection function is invalid. In order to prevent overflow, no exhaust is performed during the pressure maintaining stage in the porridge and soup cooking functions, and the exhaust speed in the exhaust stage is slowed down to ensure that the food can be cooked. This embodiment does not report an error after the upper pressure signal detection function fails, thereby improving the user experience without affecting normal use.

[0099] The reasons for the abnormality of the upper pressure signal detection function are different, and the temperature measurement methods in the pressure holding stage and the exhaust stage may be different. Optionally, in the cooking control method provided in the embodiment of the present application, in the pressure holding stage and the exhaust stage, if the reason for 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; if the reason for 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.

[0100] It should be noted that, under the second fault, the voltage-dividing resistor of the sampling resistor is short-circuited, and since the cooking appliance is actually in an upper pressure state during the pressure-holding stage, the sampling signal value will be greater than the threshold value. Therefore, if the sampling signal value is detected to be greater than or equal to the signal threshold value during the pressure-holding stage, it can be determined that the cause of the abnormality of the upper pressure signal detection function is the second fault. Under the first fault, even if the cooking appliance is actually in an upper pressure state during the pressure-holding stage, the voltage-dividing resistor will not be short-circuited, and the sampling signal value will not be greater than the threshold value. Therefore, if the sampling signal value is detected to be less than the signal threshold value during the pressure-holding stage, it can be determined that the cause of the abnormality of the upper pressure signal detection function is the first fault.

[0101] Therefore, during the cooking process, the temperature is first controlled by the bottom temperature sensor. After the temperature is controlled to ensure the pressure, if the sampling signal value is less than the signal threshold, it means that the reason for the failure of the induction switch is the first fault, and the temperature is still controlled by the bottom sensor during the pressure holding stage and the exhaust stage. If the sampling signal value of the signal detection module is greater than or equal to the signal threshold, it means that the reason for the failure of the induction switch is the second fault. After the pressure is applied, the temperature can be accurately measured by the signal detection module. During the pressure holding stage and the exhaust stage, the signal detection module takes over the temperature control of the bottom sensor, thereby improving the accuracy of temperature measurement.

[0102] Through this embodiment, in the case of an abnormality in the upper pressure signal detection function, the bottom temperature sensor is used to control the temperature in the early stage. After ensuring the pressure holding stage and the exhaust stage after the upper pressure, in the case of the second fault, the top sensor in the signal detection module can also intervene to improve the cooking efficiency. In the case of the first fault, the temperature is still controlled by the bottom sensor to ensure successful cooking.

[0103] In an optional implementation, the sampling signal value is a voltage-divided value of a 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, the voltage-dividing resistor is connected in parallel with an induction switch, the thermistor is arranged inside the cooking utensil, and the on-off state of the induction switch is determined by the pressure state inside the cooking utensil. Optionally, in the cooking control method provided in the embodiment of the present application, during the pressure-maintaining stage and the exhaust stage, if the reason for the abnormality of the upper pressure signal detection function is a short circuit of the induction switch, the temperature inside the cooking utensil is obtained from the signal detection module, and if the reason for the abnormality of the upper pressure signal detection function is a short circuit of the induction switch, the temperature inside the cooking utensil is obtained from the bottom temperature sensor.

[0104] It should be noted that the failure of the induction switch leads to abnormality in the upper pressure signal detection function. The reason for the failure of the induction switch is open circuit or short circuit. The first fault is the open circuit of the induction switch, and the second fault is the short circuit of the induction switch. After the induction switch fails, the signal detection module cannot accurately measure the temperature. During the cooking process, the bottom temperature sensor is used to control the temperature first. After the temperature is controlled to ensure the upper pressure, if the sampling signal value is less than the signal threshold, it means that the reason for the failure of the induction switch is open circuit. The temperature is still controlled by the bottom sensor during the pressure holding stage and the exhaust stage. If the sampling signal value of the signal detection module is greater than or equal to the signal threshold, it means that the reason for the failure of the induction switch is short circuit. After the upper pressure, the temperature can be accurately measured by the signal detection module. Since the temperature measurement accuracy of the bottom temperature sensor is not high and the fluctuation is large, the signal detection module takes over the temperature control of the bottom sensor during the pressure holding stage and the exhaust stage, thereby improving the accuracy of temperature measurement.

[0105] Through this embodiment, when the upper pressure signal detection function is abnormal, the bottom temperature sensor is used for temperature control in the early stage. During the pressure maintaining stage and the exhaust stage after the upper pressure is ensured, the top sensor in the signal detection module can also intervene when the sensing switch is short-circuited, thereby improving the cooking efficiency. When the sensing switch is open, the temperature is still controlled by the bottom sensor to ensure successful cooking.

[0106] According to another aspect of the present application, a cooking appliance is provided, wherein a control module of the cooking appliance is used to execute the above cooking control method to cook food in the cooking appliance.

[0107] The cooking appliance may be a split cooking appliance, such as a split electric pressure cooker. The cooking appliance is provided with a signal detection module including a wireless upper module and a wireless lower module. The wireless upper module may be provided on the cover of the split cooking appliance, and the wireless lower module may be provided on the main body of the split cooking appliance. When the cover of the cooking appliance is closed, the wireless upper module and the wireless lower module are located within each other's sensing range. The wireless lower module charges the wireless upper module by wireless charging. After the wireless upper module is powered on, the sampling signal value is collected and sent to the wireless lower module by wireless communication. The wireless lower module determines the internal temperature and internal pressure state of the cooking appliance according to the sampling signal value. During the cooking process, the control module of the cooking appliance calls the signal detection module to obtain the internal temperature and internal pressure state of the cooking appliance, and executes the cooking program based on the internal temperature and internal pressure state. In addition, it should be noted that the wireless upper module and the wireless lower module can also be used to implement the opening and closing cover detection method. The control module includes a program for implementing the opening and closing cover detection method. The control module can implement the opening and closing cover detection method based on the communication between the wireless upper module and the wireless lower module (such as the patent "device status judgment method, system, storage medium and electronic device" with application number 202111679962.0, and the patent "device status judgment method, device, storage medium and electronic device" with application number 202210178529.7).

[0108] In an alternative embodiment, the cooking appliance may Figure 5 The cooking control method shown, Figure 5 FIG. 1 is a flow chart of an optional cooking control method according to an embodiment of the present application. Figure 5 As shown, the method comprises the following steps:

[0109] After the cooking appliance is controlled to start cooking, the control module of the cooking appliance reads the boiling point temperature and enters the heating stage, calling the signal detection module to determine whether the upper pressure signal flag Pre_Err is 1 to determine whether the upper pressure signal detection function is normal.

[0110] When Pre_Err is not 1, it indicates that the upper pressure signal detection function is normal. During the cooking process, the temperature and pressure state detected by the signal detection module can be called to control the cooking. In the heating stage, it is determined whether the upper pressure signal flag bit Pre_Flg is 1. When Pre_Flg is 1, it indicates that the stamping stage can be entered, and the power is increased to start stamping to ensure that the pressure can be rushed up. In the stamping stage, the signal detection module is continuously called to obtain the accurate temperature, and the obtained temperature is converted into pressure to determine whether the pressure reaches the target pressure. When the target pressure is reached, the pressure holding stage is entered. After entering the pressure holding stage, for the soup and porridge functions, the solenoid valve exhausts to increase boiling. Different exhaust volumes are set according to different functions to make cooking more complete without overflowing the pot and improve nutritional indicators. After the pressure holding stage, the exhaust stage is carried out. The signal detection module is called to determine whether the upper pressure signal flag bit Pre_Flg is 0. When Pre_Flg is 0, it indicates that the anti-opening rod has fallen, and the pot is in a non-pressurized state. The exhaust stage is over and the lid can be opened safely.

[0111] When Pre_Err is 1, it indicates that the upper pressure signal detection function is abnormal, and the fault cooking mode is entered. Both fault cooking and normal cooking have heating, stamping, pressure holding and exhaust stages, but the temperature control methods and cooking curves of the same stage in the two cooking modes are different. After entering the fault cooking mode, the program of each cooking stage is re-executed from the heating stage to avoid cutting into a certain cooking stage alone and affecting the cooking effect. In the fault cooking mode, the temperature is controlled by the bottom temperature sensor, and the temperature below is not controlled very high. The heat is slowly conducted upward to ensure that cooking can be completed.

[0112] Through this embodiment, when the upper pressure signal detection function is normal, the normal cooking program is executed, and the temperature signal and pressure state collected by the signal detection module are called to efficiently complete cooking. When the upper 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 successful cooking.

[0113] It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and that, although a logical order is shown in the flowcharts, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0114] The embodiment of the present application further provides a signal detection module. It should be noted that the signal detection module of the embodiment of the present application can be used to execute the signal detection method provided by the embodiment of the present application. The signal detection module provided by the embodiment of the present application is introduced below.

[0115] Figure 6is a schematic diagram of a signal detection module according to an embodiment of the present application. Figure 6 As shown, the signal detection module is applied to a cooking appliance, and includes: an acquisition unit 602 , a first judgment unit 604 , a first determination unit 606 and a second determination unit 608 .

[0116] The acquisition unit 602 is used to acquire the sampled signal value.

[0117] The first judgment unit 604 is used to judge 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 the preset boiling point on the 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.

[0118] The first determination unit 606 is used to determine that no pressure signal is detected when the sampling signal value is less than the signal threshold, and to query the temperature corresponding to the sampling signal value through the first curve to obtain the temperature inside the cooking appliance.

[0119] The second unit is used to determine that an upward pressure signal is detected when the sampling signal value is greater than or equal to a signal threshold, and to query the temperature corresponding to the sampling signal value through a second curve to obtain the temperature inside the cooking utensil, wherein the second curve indicates the relationship between the sampling signal value and the temperature value of the cooking utensil in an upward pressure state.

[0120] The signal detection module provided in the embodiment of the present application solves the problem in the related art that it is difficult for a split electric pressure cooker to accurately detect the upper pressure signal, and the cooking efficiency is low in order to ensure that the pot does not overflow, through the acquisition unit 602, the first judgment unit 604, the first determination unit 606 and the second determination unit 608. The pressure state in the pot can be determined according to the relationship between the sampled signal value and the signal threshold, and the temperature value corresponding to the sampled signal value can be queried according to the curve corresponding to the pressure state in the pot to obtain the temperature inside the cooking utensil, thereby achieving the effect of simultaneously detecting the temperature and pressure state inside the cooking utensil, laying a foundation for improving cooking quality and cooking efficiency.

[0121] Optionally, in the signal detection module provided in the embodiment of the present application, the signal detection module also includes: a second judgment unit, used to, after judging whether the sampling signal value is greater than the signal threshold, query the temperature corresponding to the sampling signal value through the first curve when the sampling signal value is less than the signal threshold, and judge whether the queried temperature value is greater than a preset temperature value, wherein the preset temperature value is greater than the preset boiling point, and the sampling signal value of the preset temperature value on the first curve is less than the signal threshold; a third determination unit, used to determine that the upper pressure signal detection function of the signal detection function is abnormal when the queried temperature value is greater than the preset temperature value.

[0122] Optionally, in the signal detection module provided in the embodiment of the present application, the signal detection module also includes: a third judgment unit, used to determine whether the sampling signal value is greater than a signal threshold after the upper pressure signal detection function is abnormal when the queried temperature value is greater than a preset temperature value, and after the cooking appliance enters the pressure holding stage; a fourth determination unit, used to determine that the cause of the abnormality of the upper pressure signal detection function is a first fault when the sampling signal value is less than the signal threshold; and a fifth determination unit, used to determine that the cause of the abnormality of the upper pressure signal detection function is a second fault when the sampling signal value is greater than or equal to the signal threshold.

[0123] Optionally, in the signal detection module provided in the embodiment of the present application, the signal detection module also includes: a fourth judgment unit, used to judge whether the sampling signal value is greater than or equal to the maximum value, and judge whether the sampling signal value is less than or equal to the minimum value before judging whether the sampling 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 a fault when the sampling signal value is greater than or equal to the maximum value or less than or equal to the minimum value; a seventh determination unit, used to determine that the signal detection function has not a fault when the sampling signal value is greater than the minimum value and less than the maximum value, and execute the step of judging whether the sampling signal value is greater than the signal threshold.

[0124] 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 implement corresponding functions.

[0125] The processor includes a kernel, which retrieves the corresponding program unit from the memory. One or more kernels can be set, and the kernel parameters are adjusted to solve the problem in the related art that the split electric pressure cooker is difficult to accurately detect the upper pressure signal, so as to ensure that the pot does not overflow and the cooking efficiency is low.

[0126] The memory may include non-permanent memory in a computer-readable medium, 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.

[0127] The embodiment of the present application also provides a cooking control device. It should be noted that the cooking control device of the embodiment of the present application can be used to execute the signal detection method provided in the embodiment of the present application. The cooking control device provided in the embodiment of the present application is introduced below.

[0128] Figure 7 Schematic diagram of a cooking control device according to an embodiment of the present application. Figure 7 As shown, the device includes: a fifth judgment unit 702 , a first execution unit 704 and a second execution unit 706 .

[0129] A fifth determination unit 702 is used to determine 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 above-mentioned signal detection method;

[0130] The first execution unit 704 is used to execute the first cooking program when the upper pressure signal detection function is normal, wherein the first cooking program calls the temperature, pressure state and actual boiling point temperature detected by the signal detection module to control the cooking utensil to cook;

[0131] The second execution unit 706 is used to execute a second cooking program when the upper pressure signal detection function is abnormal, 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.

[0132] The cooking control device provided in the embodiment of the present application solves the problem in the related art that it is difficult for the split electric pressure cooker to accurately detect the upper pressure signal, and the cooking efficiency is low in order to ensure that the pot does not overflow, through the fifth judgment unit 702, the first execution unit 704 and the second execution unit 706. When the upper pressure signal detection function of the signal detection module is normal, the temperature and pressure state are called in real time to control the cooking utensil for cooking, and the temperature and pressure state are accurately detected according to the signal detection module, thereby improving the cooking quality and cooking efficiency. When the upper pressure signal detection function of the signal detection module is abnormal, the cooking utensil is controlled by the temperature collected by the bottom temperature sensor of the cooking utensil for cooking, thereby achieving the purpose of ensuring that cooking can be completed normally.

[0133] Optionally, in the cooking control device provided in the embodiment of the present application, when the upper 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 the upper pressure signal mark bit from the signal detection module, and control the cooking appliance to enter the stamping stage when the upper pressure signal mark bit indicates the presence of the upper pressure signal; a second control module, used to obtain the temperature inside the cooking appliance from the signal detection module during the stamping stage, and control the cooking appliance to enter the pressure holding stage when the temperature inside the cooking appliance reaches the pressure holding temperature, and after the pressure holding stage ends, control the cooking appliance to enter the exhaust stage; a third control module, used to obtain the upper pressure signal mark bit from the signal detection module during the exhaust stage, and control the cooking appliance to end the exhaust stage when the upper pressure signal mark bit indicates the absence of the upper pressure signal.

[0134] Optionally, in the cooking control device provided in the embodiment of the present application, when the cooking function of the cooking utensil is soup or porridge, the following operations are performed during the pressure holding stage: the temperature inside the cooking utensil is obtained from the signal detection module, and the actual pressure inside the cooking utensil is determined based on 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 holding stage by controlling the heating program, and the exhaust operation is performed at preset time intervals until the pressure holding stage ends.

[0135] Optionally, in the cooking control device provided in the embodiment of the present application, when the upper pressure signal detection function is abnormal, 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 the preset power, and control the cooking appliance to enter the stamping 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 in the stamping stage when the temperature collected by the bottom temperature sensor reaches the pressure holding temperature, and control the cooking appliance to enter the exhaust stage after the pressure holding stage ends; a sixth control module, used to determine the internal pressure of the cooking appliance according to the internal temperature of the cooking appliance and the preset boiling point in the exhaust stage, and control the cooking appliance to end the exhaust stage when there is no pressure difference between the internal pressure of the cooking appliance and the external pressure of the cooking appliance.

[0136] Optionally, in the cooking control device provided in the embodiment of the present application, during the pressure maintaining stage and the exhaust stage, 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; 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.

[0137] 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 implement corresponding functions.

[0138] The processor includes a kernel, which retrieves the corresponding program unit from the memory. One or more kernels can be set, and the kernel parameters are adjusted to solve the problem in the related art that the split electric pressure cooker is difficult to accurately detect the upper pressure signal, so as to ensure that the pot does not overflow and the cooking efficiency is low.

[0139] The memory may include non-permanent memory in a computer-readable medium, 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.

[0140] An embodiment of the present application further provides a computer storage medium, which is used to store a program, wherein when the program is run, the device where the non-volatile storage medium is located is controlled to execute a signal detection method or a cooking control method.

[0141] The embodiment of the present application also provides an electronic device, Figure 8 is a schematic diagram of an electronic device according to an embodiment of the present application, wherein the electronic device 80 comprises a processor and a memory; the memory stores computer-readable instructions, and the processor is used to run the computer-readable instructions, wherein a signal detection method is executed when the computer-readable instructions are run. The electronic device in this article may be a server, a PC, a PAD, a mobile phone, etc.

[0142] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0143] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0144] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0145] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0146] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0147] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0148] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules 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 technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0149] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0150] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A signal detection method, characterized in that: Applied to a cooking appliance, the method comprises: Get the 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 a signal value corresponding to a preset boiling point on a first curve, and the first curve indicates a relationship between the sampled signal value and the temperature value of the cooking appliance in a non-pressurized state; When the sampling signal value is less than the signal threshold, determining that no pressure signal is detected, and querying the temperature corresponding to the sampling signal value through the first curve to obtain the temperature inside the cooking appliance; When the sampling signal value is greater than or equal to the signal threshold, it is determined that the upper pressure signal is detected, and the temperature corresponding to the sampling signal value is queried through the second curve to obtain the temperature inside the cooking utensil, wherein the second curve indicates the relationship between the sampling signal value and the temperature value of the cooking utensil in the upper pressure state.

2. The signal detection method according to claim 1, characterized in that: After determining whether the sampled signal value is greater than a signal threshold, the method further includes: In the case where the sampling signal value is less than the signal threshold, querying the temperature corresponding to the sampling 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 is greater than the preset boiling point, and the sampling signal value of the preset temperature value on the first curve is less than the signal threshold; When the queried temperature value is greater than the preset temperature value, it is determined that the upper pressure signal detection function is abnormal.

3. The signal detection method according to claim 2, characterized in that: When the queried temperature value is greater than the preset temperature value, after determining that the pressure signal detection function is abnormal, the method further includes: After the cooking appliance enters the pressure-maintaining stage, determining whether the sampled signal value is greater than the signal threshold; When the sampling signal value is less than the signal threshold, determining that the cause of the abnormality of the upper pressure signal detection function is a first fault; When the sampling signal value is greater than or equal to the signal threshold, it is determined that the cause of the abnormality of the upper pressure signal detection function is a second fault.

4. The signal detection method according to claim 1, characterized in that: Before determining whether the sampled signal value is greater than a signal threshold, the method further includes: Determine whether the sampled signal value is greater than or equal to a maximum value, and determine whether the sampled signal value is less than or equal to a minimum value, wherein the signal threshold is greater than the minimum value, and the signal threshold is less than the maximum value; When the sampling signal value is greater than or equal to the maximum value or less than or equal to the minimum value, determining that a signal detection function fails; When the sampling signal value is greater than the minimum value and less than the maximum value, it is determined that the signal detection function has not failed, and a step of determining whether the sampling signal value is greater than the signal threshold is performed.

5. A cooking control method, applied to a cooking appliance having a signal detection module, characterized in that: include: 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 signal detection method according to any one of claims 1 to 4; When the upper pressure signal detection function is normal, executing a first cooking program, wherein the first cooking program calls the temperature, pressure state and actual boiling point detected by the signal detection module to control the cooking utensil to cook; In case that the upper pressure signal detection function is abnormal, a second cooking program is executed, 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 a preset boiling point temperature.

6. The cooking control method according to claim 5, characterized in that: When the pressure signal detection function is normal, executing the first cooking program includes: Controlling the cooking appliance to enter a heating stage, obtaining an upper pressure signal flag from the signal detection module, and controlling the cooking appliance to enter a stamping stage when the upper pressure signal flag indicates the presence of an upper pressure signal; In the stamping stage, the temperature inside the cooking utensil is obtained from the signal detection module, and when the temperature inside the cooking utensil reaches the pressure holding temperature, the cooking utensil is controlled to enter the pressure holding stage, and after the pressure holding stage ends, the cooking utensil is controlled to enter the exhaust stage; In the exhaust phase, the upper pressure signal flag is obtained from the signal detection module, and when the upper pressure signal flag indicates that the upper pressure signal does not exist, the cooking appliance is controlled to end the exhaust phase.

7. The cooking control method according to claim 6, characterized in that: When the cooking function of the cooking appliance is soup or porridge, the following operations are performed during the pressure holding stage: Acquire the temperature inside the cooking utensil from the signal detection module, and determine the actual pressure inside the cooking utensil according to the temperature inside the cooking utensil 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 the exhaust operation is performed at preset time intervals until the pressure holding stage ends.

8. The cooking control method according to claim 5, characterized in that: In case that the pressure signal detection function is abnormal, executing the second cooking program includes: Controlling the cooking utensil to enter a heating stage, heating the cooking utensil according to a preset power, and controlling the cooking utensil to enter a stamping stage when the temperature collected by the bottom temperature sensor reaches a preset boiling point; In the stamping stage, when the temperature collected by the bottom temperature sensor reaches the pressure holding temperature, the cooking appliance is controlled to enter the pressure holding stage, and after the pressure holding stage ends, the cooking appliance is controlled to enter the exhaust stage; In the exhaust phase, the internal pressure of the cooking appliance is determined according to the internal temperature of the cooking appliance and the preset boiling point, and the cooking appliance is controlled to end the exhaust phase when there is no pressure difference between the internal pressure of the cooking appliance and the external pressure of the cooking appliance.

9. The cooking control method according to claim 8, characterized in that: During the pressure holding stage and the exhaust stage, 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; 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.

10. An electronic device, characterized in that: It comprises a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the signal detection method described in any one of claims 1 to 4, or execute the cooking control method described in any one of claims 5 to 9 through the computer program.

11. A cooking utensil, characterized in that: The control module of the cooking appliance is used to execute the cooking control method as claimed in any one of claims 5 to 9.

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