CN115067739B

CN115067739B - Pressure cooker, control method of pressure cooker, storage medium and electronic device

Info

Publication number: CN115067739B
Application number: CN202210182190.8A
Authority: CN
Inventors: 韦守荣
Original assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Current assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Priority date: 2022-02-25
Filing date: 2022-02-25
Publication date: 2023-07-14
Anticipated expiration: 2042-02-25
Also published as: CN115067739A

Abstract

The application discloses a pressure cooker, a control method of the pressure cooker, a storage medium and an electronic device. The method comprises the following steps: in the working process of the pressure cooker, a first voltage value sent by a first magnetic field sensor is received, and the first voltage value is compared with a reference voltage value to obtain a current voltage difference value, wherein the first magnetic field sensor is arranged on an outer cooker of the pressure cooker, a magnet is arranged on a cooker body of the pressure cooker, or the first magnetic field sensor is arranged on the cooker body of the pressure cooker, and a magnet is arranged on the outer cooker of the pressure cooker, wherein the current voltage difference value is used for representing the current pressure condition of the outer cooker of the pressure cooker; comparing the current voltage difference value with the target voltage difference value to obtain a comparison result; and controlling the operation of the pressure cooker according to the comparison result. Through this application, solved among the correlation technique pressure cooker after long-time use to the inaccurate problem of pressure control.

Description

Pressure cooker, control method of pressure cooker, storage medium and electronic device

Technical Field

The present application relates to the field of pressure control, and in particular, to a pressure cooker, a control method of the pressure cooker, a storage medium, and an electronic device.

Background

The pressure control method of the electric control pressure cooker utilizes the elastic deformation of the elastic wall of the electric control pressure cooker to generate displacement, the displacement change of the elastic wall triggers the pressure switch, and the electric control pressure cooker is powered off through the pressure switch. However, because the outer bottom of the electric control pressure cooker is subjected to multiple compression deformation, fatigue effect can occur, after a period of use, the elastic wall is compressed and elastically deformed, the generated displacement is poor in consistency, the pressure control capability is attenuated, and the pressure is inconsistent with the set pressure control index.

Aiming at the problem that the pressure cooker in the related art is inaccurate in pressure control after long-time use, no effective solution is proposed at present.

Disclosure of Invention

The application provides a control method of a pressure cooker, which aims to solve the problem that the pressure cooker in the related art is inaccurate in pressure control after long-time use.

According to one aspect of the present application, a control method for a pressure cooker is provided. The method comprises the following steps: in the working process of the pressure cooker, a first voltage value sent by a first magnetic field sensor is received, and the first voltage value is compared with a reference voltage value to obtain a current voltage difference value, wherein the first magnetic field sensor is arranged on an outer cooker of the pressure cooker, a magnet is arranged on a cooker body of the pressure cooker, or the first magnetic field sensor is arranged on the cooker body of the pressure cooker, and a magnet is arranged on the outer cooker of the pressure cooker, wherein the current voltage difference value is used for representing the current pressure condition of the outer cooker of the pressure cooker; comparing the current voltage difference with a target voltage difference to obtain a comparison result, wherein the target voltage difference is a voltage difference corresponding to a target pressure level in a first pressure level table, the first pressure level table comprises a plurality of pressure levels and voltage differences corresponding to each pressure level, the first pressure level table is determined in the pressure level tables according to an initial voltage difference, and the initial voltage difference is a voltage difference between a voltage value sent by a first magnetic field sensor and a reference voltage value in a non-working state of the pressure cooker; and controlling the operation of the pressure cooker according to the comparison result. The pressure cooker is controlled by the difference value between the first voltage value detected by the first magnetic field sensor at the bottom of the outer cooker and the reference voltage value, and the pressure condition of the bottom of the outer cooker can be accurately represented by the difference value under the condition of deformation of the outer cooker, so that the aim of accurately controlling the pressure in the pressure cooker is fulfilled.

Optionally, before comparing the current voltage difference with the target voltage difference, the method further includes: receiving a second voltage value sent by the first magnetic field sensor in a non-working state of the pressure cooker; comparing the second voltage value with the reference voltage value to obtain an initial voltage difference value; determining pressure level tables corresponding to initial voltage difference values in the pressure level tables to obtain a first pressure level table, wherein each pressure level table is associated with different initial voltage difference value ranges, different pressure level tables contain the same number of pressure levels, and the voltage difference value ranges corresponding to the same pressure level in different pressure level tables are different. And confirming the pressure range corresponding to the current voltage difference value according to the pressure grade gauge to control the pressure change in the pot, thereby achieving the purpose of accurately controlling the pressure.

Optionally, before comparing the first voltage value with the reference voltage value to obtain the current voltage difference value, the method further includes: and in the working process of the pressure cooker, receiving the voltage value sent by the second magnetic field sensor, and determining the received voltage value as a reference voltage value, wherein the second magnetic field sensor is arranged on the cooker body of the pressure cooker under the condition that the first magnetic field sensor is arranged on the outer cooker of the pressure cooker and the magnet is arranged on the cooker body of the pressure cooker, and the second magnetic field sensor is arranged on the outer cooker of the pressure cooker under the condition that the first magnetic field sensor is arranged on the cooker body of the pressure cooker and the magnet is arranged on the outer cooker of the pressure cooker. The accuracy of the reference value can be ensured by measuring the reference value by the second magnetic field sensor without errors.

Optionally, before comparing the first voltage value with the reference voltage value to obtain the current voltage difference value, the method further includes: receiving voltage values sent by the second magnetic field sensors respectively in the working process of the plurality of sample pressure cookers to obtain a plurality of voltage values, wherein the second magnetic field sensors are respectively arranged on the pot bodies of the plurality of sample pressure cookers when the first magnetic field sensors are arranged on the outer pot of the pressure cooker and the magnets are arranged on the pot bodies of the pressure cooker, and the second magnetic field sensors are respectively arranged on the outer pot of the plurality of sample pressure cookers when the first magnetic field sensors are arranged on the pot bodies of the pressure cooker and the magnets are arranged on the outer pot of the pressure cooker; an average value of the plurality of voltage values is calculated, and the average value of the plurality of voltage values is determined as a reference voltage value. By determining the average value of the voltage values as the reference voltage value, one Hall sensor can be saved when the reference voltage value is determined, and the cost is reduced.

Optionally, controlling the operation of the pressure cooker according to the comparison result includes: controlling the pressure cooker to stop heating under the condition that the comparison result indicates that the current voltage difference value is smaller than the target voltage difference value; and under the condition that the comparison result indicates that the current voltage difference value is larger than or equal to the target voltage difference value, controlling the pressure cooker to continue heating. The pressure in the pressure cooker can be accurately controlled within the target pressure range by controlling the operation of the pressure cooker through the comparison result of the current voltage difference value and the target voltage difference value.

Optionally, before comparing the current voltage difference with the target voltage difference, the method further includes: judging whether the current voltage difference value falls within a preset voltage difference value range or not; under the condition that the current voltage difference value falls in a preset voltage difference value range, executing the step of comparing the current voltage difference value with a target voltage difference value to obtain a comparison result; and outputting alarm information under the condition that the current voltage difference value does not fall in the preset voltage difference value range. By setting the preset voltage difference range and alarming when the voltage difference exceeds the preset voltage difference range, the damage to the pressure cooker caused by abnormal pressure in the pressure cooker is avoided.

Optionally, in the case that the current voltage difference does not fall within the preset voltage difference range, outputting the alarm information includes: outputting first alarm information when the current voltage difference value does not fall in a preset voltage difference value range and when the current voltage difference value is larger than the upper limit value of the preset voltage difference value range, wherein the first alarm information is used for indicating that the first magnetic field sensor cannot detect the magnetic field intensity; outputting second alarm information under the condition that the current voltage difference is smaller than the small limit value of the preset voltage difference range, wherein the second alarm information is used for indicating that the deformation size of the outer pot is larger than the preset size. Therefore, the fault position of the pressure cooker with the problem can be accurately found out through the prompt information.

Optionally, the first magnetic field sensor is a hall sensor. The Hall sensor can effectively convert the pressure change of the pressure cooker into the change of the voltage difference value so as to control the pressure change.

According to another aspect of the present application, there is provided a pressure cooker including: the inner pot and the pot cover are arranged at the top of the inner pot, and the pot cover is used for sealing the inner pot; the outer pot is arranged outside the inner pot, and is provided with a first magnetic field sensor for detecting the magnetic field intensity between the outer pot and the pot body and converting the magnetic field intensity into a first voltage value; the pot body is arranged outside the outer pot, a magnet and a second magnetic field sensor are arranged on the pot body, and the pot body is used for detecting the magnetic field intensity between the pot body and the outer pot and converting the magnetic field intensity into a second voltage value; and the microcontroller unit is connected with the first magnetic field sensor and the second magnetic field sensor and is used for comparing the first voltage value with the second voltage value to obtain a current voltage difference value, comparing the current voltage difference value with a target voltage difference value to obtain a comparison result and controlling the operation of the heating device according to the comparison result, wherein the target voltage difference value is a voltage difference value corresponding to a target pressure grade in the first pressure grade table, the first pressure grade table comprises a plurality of pressure grades and voltage difference values corresponding to each pressure grade, the first pressure grade table is determined in the plurality of pressure grade tables according to an initial voltage difference value, and the initial voltage difference value is a difference value between the voltage value sent by the first magnetic field sensor and the voltage value sent by the second magnetic field sensor in a non-operating state of the pressure cooker.

According to another aspect of the present application, there is provided a pressure cooker including: the inner pot and the pot cover are arranged at the top of the inner pot, and the pot cover is used for sealing the inner pot; the outer pot is arranged outside the inner pot, a magnet and a second magnetic field sensor are arranged on the outer pot, and the outer pot is used for detecting the magnetic field intensity between the outer pot and the pot body and converting the magnetic field intensity into a second voltage value; the cooker body is arranged outside the outer cooker, and is provided with a first magnetic field sensor for detecting the magnetic field intensity between the cooker body and the outer cooker and converting the magnetic field intensity into a first voltage value; and the microcontroller unit is connected with the first magnetic field sensor and the second magnetic field sensor and is used for comparing the first voltage value with the second voltage value to obtain a current voltage difference value, comparing the current voltage difference value with a target voltage difference value to obtain a comparison result and controlling the operation of the heating device according to the comparison result, wherein the target voltage difference value is a voltage difference value corresponding to a target pressure grade in the first pressure grade table, the first pressure grade table comprises a plurality of pressure grades and voltage difference values corresponding to each pressure grade, the first pressure grade table is determined in the plurality of pressure grade tables according to an initial voltage difference value, and the initial voltage difference value is a difference value between the voltage value sent by the first magnetic field sensor and the voltage value sent by the second magnetic field sensor in a non-operating state of the pressure cooker.

According to another aspect of the present application, there is provided a pressure cooker including: the inner pot and the pot cover are arranged at the top of the inner pot, and the pot cover is used for sealing the inner pot; the outer pot is arranged outside the inner pot, and is provided with a first magnetic field sensor for detecting the magnetic field intensity between the outer pot and the pot body and converting the magnetic field intensity into a first voltage value; the pot body is arranged outside the outer pot and provided with a magnet; and the microcontroller unit is connected with the first magnetic field sensor and is used for comparing the first voltage value with the reference voltage value to obtain a current voltage difference value, comparing the current voltage difference value with a target voltage difference value to obtain a comparison result, and controlling the operation of the heating device according to the comparison result, wherein the target voltage difference value is a voltage difference value corresponding to a target pressure grade in the first pressure grade table, the first pressure grade table comprises a plurality of pressure grades and voltage difference values corresponding to each pressure grade, the first pressure grade table is determined in the plurality of pressure grade tables according to an initial voltage difference value, and the initial voltage difference value is a difference value between the voltage value sent by the first magnetic field sensor and the reference voltage value under the non-operating state of the pressure cooker.

According to another aspect of the present application, there is provided a pressure cooker including: the inner pot and the pot cover are arranged at the top of the inner pot, and the pot cover is used for sealing the inner pot; an outer pot which is arranged outside the inner pot and provided with a magnet; the cooker body is arranged outside the outer cooker, and is provided with a first magnetic field sensor for detecting the magnetic field intensity between the outer cooker and the cooker body and converting the magnetic field intensity into a first voltage value; and the microcontroller unit is connected with the first magnetic field sensor and is used for comparing the first voltage value with the reference voltage value to obtain a current voltage difference value, comparing the current voltage difference value with a target voltage difference value to obtain a comparison result, and controlling the operation of the heating device according to the comparison result, wherein the target voltage difference value is a voltage difference value corresponding to a target pressure grade in the first pressure grade table, the first pressure grade table comprises a plurality of pressure grades and voltage difference values corresponding to each pressure grade, the first pressure grade table is determined in the plurality of pressure grade tables according to an initial voltage difference value, and the initial voltage difference value is a difference value between the voltage value sent by the first magnetic field sensor and the reference voltage value under the non-operating state of the pressure cooker.

According to another aspect of the embodiment of the present invention, there is also provided a non-volatile storage medium, the non-volatile storage medium including a stored program, wherein the program, when running, controls a device in which the non-volatile storage medium is located to execute a control method of a pressure cooker.

According to another aspect of the embodiment of the present invention, there is also provided an electronic device including a processor and a memory; the memory stores computer readable instructions, and the processor is configured to execute the computer readable instructions, wherein the computer readable instructions execute a method for controlling the pressure cooker when executed.

Through the application, the following steps are adopted: in the working process of the pressure cooker, a first voltage value sent by a first magnetic field sensor is received, and the first voltage value is compared with a reference voltage value to obtain a current voltage difference value, wherein the first magnetic field sensor is arranged on an outer cooker of the pressure cooker, a magnet is arranged on a cooker body of the pressure cooker, or the first magnetic field sensor is arranged on the cooker body of the pressure cooker, and a magnet is arranged on the outer cooker of the pressure cooker, wherein the current voltage difference value is used for representing the current pressure condition of the outer cooker of the pressure cooker; comparing the current voltage difference with a target voltage difference to obtain a comparison result, wherein the target voltage difference is a voltage difference corresponding to a target pressure level in a first pressure level table, the first pressure level table comprises a plurality of pressure levels and voltage differences corresponding to each pressure level, the first pressure level table is determined in the pressure level tables according to an initial voltage difference, and the initial voltage difference is a voltage difference between a voltage value sent by a first magnetic field sensor and a reference voltage value in a non-working state of the pressure cooker; the pressure cooker is controlled to work according to the comparison result, so that the problem that the pressure cooker is inaccurate in pressure control after long-time use in the related technology is solved. The pressure change in the pressure cooker is converted into a voltage difference value through the magnetic field sensor and is transmitted to the micro control unit, and the micro control unit controls the pressure cooker to work according to a preset pressure level, so that the effect of accurately controlling the pressure in the pressure cooker is achieved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application, illustrate and explain the application and are not to be construed as limiting the application. In the drawings:

FIG. 1 is a flow chart of a control method of a pressure cooker provided according to an embodiment of the application;

fig. 2 is a flowchart of a pressure level program determination in a control method of a pressure cooker according to an embodiment of the present application;

fig. 3 is a flowchart of a program executed in a micro control unit of the pressure cooker provided according to an embodiment of the present application;

FIG. 4a is a schematic diagram of a distance between a Hall sensor and a magnet provided in accordance with an embodiment of the present application;

FIG. 4b is a schematic diagram II of the distance between a Hall sensor and a magnet provided in accordance with an embodiment of the present application;

FIG. 5 is a schematic illustration I of a pressure cooker provided in accordance with an embodiment of the present application;

FIG. 6 is a schematic diagram II of a pressure cooker provided in accordance with an embodiment of the present application;

FIG. 7 is a schematic diagram III of a pressure cooker provided in accordance with an embodiment of the present application;

FIG. 8 is a schematic diagram IV of a pressure cooker provided in accordance with an embodiment of the present application;

fig. 9 is a schematic view of a control device of a pressure cooker according to an embodiment of the present application.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the present application described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

According to an embodiment of the application, a control method of a pressure cooker is provided.

Fig. 1 is a flowchart of a control method of a pressure cooker according to an embodiment of the present application. As shown in fig. 1, the method comprises the steps of:

step S102, in the working process of the pressure cooker, a first voltage value sent by a first magnetic field sensor is received, the first voltage value is compared with a reference voltage value to obtain a current voltage difference value, wherein the first magnetic field sensor is arranged on an outer cooker of the pressure cooker, a magnet is arranged on a cooker body of the pressure cooker, or the first magnetic field sensor is arranged on the cooker body of the pressure cooker, and a magnet is arranged on the outer cooker of the pressure cooker, wherein the current voltage difference value is used for representing the current pressure condition of the outer cooker of the pressure cooker.

Specifically, the first magnetic field sensor can be a hall sensor, can set up in the outside of the bottom of the outer pot of pressure cooker, and the magnet can set up in the inboard of the bottom of the pot body of pressure cooker, and with first magnetic field sensor relative setting, the first voltage value that first magnetic field sensor sent is through outer pot pressurized and takes place elastic deformation after detecting the voltage value that corresponds after the magnetic field intensity changes, and the reference voltage value is the voltage value that initial magnetic field intensity corresponds between pressure cooker outer pot and the pot body, and the reference voltage value can not change because of pressure cooker takes place elastic deformation, and current voltage difference is made by first voltage value and reference voltage value and is poor.

It should be noted that, in the process of the pressure cooker, the outer pot is pressed to generate elastic deformation to generate displacement change, the hall sensor is arranged at the outer side of the bottom of the outer pot, the hall sensor also generates displacement change, and the magnet is arranged at the inner side of the bottom of the pot body of the pressure cooker, so that the relative displacement of the hall sensor and the magnet also changes, the magnetic field intensity sensed by the hall sensor changes along with the displacement change, and the hall sensor converts the displacement change into an electric signal, namely a first voltage value.

In addition, the setting positions of the first magnetic field sensor and the magnet can be interchanged, for example, in the case that the first magnetic field sensor is a hall sensor, the hall sensor is arranged on the inner side of the bottom of the pot body of the pressure cooker, the magnet is arranged on the outer side of the bottom of the outer pot of the pressure cooker and is opposite to the hall sensor, in the working process of the pressure cooker, the outer pot is pressed to generate elastic deformation to generate displacement change, the magnet also generates displacement change, the relative displacement of the hall sensor and the magnet also changes, and therefore the magnetic field intensity sensed by the hall sensor changes along with the displacement change, and the hall sensor converts the displacement change into an electric signal, namely a first voltage value.

Step S104, comparing the current voltage difference with a target voltage difference to obtain a comparison result, wherein the target voltage difference is a voltage difference corresponding to a target pressure level in a first pressure level table, the first pressure level table comprises a plurality of pressure levels and voltage differences corresponding to each pressure level, the first pressure level table is determined in the pressure level tables according to an initial voltage difference, and the initial voltage difference is a voltage difference between a voltage value sent by a first magnetic field sensor and a reference voltage value in a non-working state of the pressure cooker.

Specifically, the current voltage difference is an instantaneous voltage difference measured when the electric pressure cooker works, the target voltage difference is a voltage difference corresponding to a target pressure level, and the comparison between the current voltage difference and the target voltage difference is used for judging whether the pressure of the electric pressure cooker reaches the target pressure level.

It should be noted that, the target pressure level is the pressure level in the first pressure level meter, the first pressure level meter includes a plurality of pressure levels and the voltage difference value corresponding to each pressure level, because the internal structure of different pressure cookers is different, and the pressure cooker is also changed inside after a period of use, the initial voltage difference value of the first magnetic field sensor when the pressure cooker does not work can change, the pressure level meter corresponding to different initial voltage difference values can be set in advance according to the historical deformation condition of the pressure cooker of the same type before the pressure cooker leaves the factory, and a plurality of pressure level meters are obtained, for example, 3 pressure level meters are set, including the first pressure level meter, the second pressure level meter and the third pressure level meter, each pressure level meter includes a plurality of pressure levels and the voltage difference value corresponding to each pressure level, wherein the number of the pressure levels included in each pressure level meter is the same, but the voltage difference value corresponding to each pressure level is different.

And step S106, controlling the operation of the pressure cooker according to the comparison result.

Specifically, the comparison result is a result of comparing the current voltage difference value with the target voltage difference value, if the current voltage difference value is smaller than the target voltage difference value, the pressure in the pressure cooker is indicated to be within a pressure range of the target pressure level, the micro control unit controls the pressure cooker to stop heating at the moment, and if the current voltage difference value is larger than or equal to the target voltage difference value, the pressure in the pressure cooker is indicated to be within a pressure range of the target pressure level, and the micro control unit controls the pressure cooker to continue heating at the moment. The pressure in the pressure cooker can be accurately controlled within the target pressure range by controlling the operation of the pressure cooker through the comparison result of the current voltage difference value and the target voltage difference value.

According to the control method for the pressure cooker, in the working process of the pressure cooker, a first voltage value sent by a first magnetic field sensor is received, the first voltage value is compared with a reference voltage value to obtain a current voltage difference value, wherein the first magnetic field sensor is arranged on an outer cooker of the pressure cooker, a magnet is arranged on a cooker body of the pressure cooker, and the current voltage difference value is used for representing the current pressure condition of the outer cooker of the pressure cooker; comparing the current voltage difference with a target voltage difference to obtain a comparison result, wherein the target voltage difference is a voltage difference corresponding to a target pressure level in a first pressure level table, the first pressure level table comprises a plurality of pressure levels and voltage differences corresponding to each pressure level, the first pressure level table is determined in the pressure level tables according to an initial voltage difference, and the initial voltage difference is a voltage difference between a voltage value sent by a first magnetic field sensor and a reference voltage value in a non-working state of the pressure cooker; and controlling the operation of the pressure cooker according to the comparison result. Through this application, solved among the correlation technique pressure cooker after long-time use to the inaccurate problem of pressure control. The pressure change in the pressure cooker is converted into a voltage difference value through the magnetic field sensor and is transmitted to the micro control unit, and the micro control unit controls the pressure cooker to work according to a preset pressure level, so that the effect of accurately controlling the pressure in the pressure cooker is achieved.

In order to obtain the current voltage difference value used for representing the pressure condition in the pressure cooker, optionally, in the control method of the pressure cooker provided by the embodiment of the application, before comparing the current voltage difference value with the target voltage difference value to obtain a comparison result, the method further includes: receiving a second voltage value sent by the first magnetic field sensor in a non-working state of the pressure cooker; comparing the second voltage value with the reference voltage value to obtain an initial voltage difference value; determining pressure level tables corresponding to initial voltage difference values in the pressure level tables to obtain a first pressure level table, wherein each pressure level table is associated with different initial voltage difference value ranges, different pressure level tables contain the same number of pressure levels, and the voltage difference value ranges corresponding to the same pressure level in different pressure level tables are different.

It should be noted that, since the initial voltage difference value will change after the pressure cooker is used for many times, it is necessary to set pressure level tables corresponding to different initial voltage difference values in the program of the micro control unit, calculate the initial voltage difference value in advance and find the corresponding pressure level table before the pressure cooker starts to work, specifically, calculate the initial voltage difference value by the second voltage value sent by the first magnetic field sensor in the non-working state of the pressure cooker, so as to determine the pressure level table corresponding to the pressure cooker.

For example, when the pressure cooker of the brand X is used for the 10 th time, the micro control unit measures the reference value of the pressure cooker as AD2, the second voltage value as AD1, calculates the difference value Δad of the reference value AND divides the Δad into a plurality of parts through the program of the micro control unit, namely, the Δad is divided into the Δad1, the Δad2, the Δad3, the term AND the Δadn, AND when the pressure cooker is used for the 11 th time, if the measured AD2 AND the measured AD1 are different from the 10 th time, the program again divides the new Δad ' into the terms of Δad1', Δad2',Δad3',theterm of the delta AD, the term of the Δad1',thedelta AD2, the term of the Δad3, the term of the delta AND the term of the AD1',thedelta AD3, the term of the delta ADN ' is the data verified through the test.

The pressure grade is divided into the following modes: when the pressure cooker leaves the factory, AD1 is 10, AD2 is 0, delta AD of the pressure cooker is 10 when the pressure cooker is used for the first time, 5 pressure grades are divided into delta AD1 of 8, delta AD2 of 6, delta AD3 of 4, delta AD4 of 2 and delta AD5 of 0; when the pressure cooker is used for 20 times after a period of use, AD1 'becomes 8, AD2' becomes 0, then DeltaAD 'is 8, and 5 pressure grades are divided into DeltaAD 1' of 6.4, deltaAD 2 'of 4.8, deltaAD 3' of 3.2, deltaAD 4 'of 1.6 and DeltaAD 5' of 0.

It should be noted that, in actual application, the number and the division condition of the pressure levels are set according to the result of the pressure test in the pressure cooker during program debugging of the micro control unit, for example, the maximum pressure and the minimum pressure in the pressure cooker are detected when the pressure cooker cooks various dishes, the number of the pressure levels is set, and the corresponding pressure range in each pressure level is determined according to the maximum pressure and the minimum pressure.

As shown in fig. 2, D is the distance between the hall sensor and the magnet, and corresponds to Δad, each Δad represents a different pressure level, when the pressure cooker works, the current voltage difference is confirmed by the magnetic field sensor to determine the value of D, when the values of D are D1, D2 and D3 … … respectively, the corresponding pressure level meter is called respectively to determine whether the pressure corresponding to D reaches the target pressure level at the moment, then whether the heating work is performed is determined, and the micro control unit controls the pressure change in the cooker according to the pressure level set in the program, thereby achieving the purpose of accurate pressure control.

Optionally, in the control method of a pressure cooker provided in the embodiment of the present application, before comparing the first voltage value with the reference voltage value to obtain the current voltage difference, the method further includes: and in the working process of the pressure cooker, receiving the voltage value sent by the second magnetic field sensor, and determining the received voltage value as a reference voltage value, wherein the second magnetic field sensor is arranged on the cooker body of the pressure cooker under the condition that the first magnetic field sensor is arranged on the outer cooker of the pressure cooker and the magnet is arranged on the cooker body of the pressure cooker, and the second magnetic field sensor is arranged on the outer cooker of the pressure cooker under the condition that the first magnetic field sensor is arranged on the cooker body of the pressure cooker and the magnet is arranged on the outer cooker of the pressure cooker.

Specifically, the second magnetic field sensor may be a hall sensor, and a voltage value emitted by the hall sensor is used as a reference value to calculate a voltage difference value.

For example, the second magnetic field sensor and the magnet are both fixed at the bottom of the pot body, the bottom of the pot body is not subjected to displacement change caused by pressure, namely, the relative displacement of the second magnetic field sensor and the magnet is fixed, and a circuit of the micro-control unit samples a fixed value AD2 acquired by the second magnetic field sensor, namely, the AD2 is used as a reference value.

For another example, the second magnetic field sensor and the magnet are fixed at the bottom of the outer pot, and the relative displacement of the second magnetic field sensor and the magnet is fixed although the bottom of the outer pot is pressed to generate displacement change, and a circuit of the micro-control unit samples a fixed value AD2 acquired by the second magnetic field sensor, namely AD2 is used as a reference value.

According to the embodiment, the second magnetic field sensor is arranged to measure the reference value, so that the accuracy of the reference value can be ensured, and errors can not occur.

In the method for controlling the pressure cooker provided by the embodiment of the application, before comparing the first voltage value with the reference voltage value to obtain the current voltage difference value, the method further comprises the following steps: receiving voltage values sent by the second magnetic field sensors respectively in the working process of the plurality of sample pressure cookers to obtain a plurality of voltage values, wherein the second magnetic field sensors are respectively arranged on the pot bodies of the plurality of sample pressure cookers when the first magnetic field sensors are arranged on the outer pot of the pressure cooker and the magnets are arranged on the pot bodies of the pressure cooker, and the second magnetic field sensors are respectively arranged on the outer pot of the plurality of sample pressure cookers when the first magnetic field sensors are arranged on the pot bodies of the pressure cooker and the magnets are arranged on the outer pot of the pressure cooker; an average value of the plurality of voltage values is calculated, and the average value of the plurality of voltage values is determined as a reference voltage value.

It should be noted that, the reference value can be directly measured by calculating the average value of a batch of samples, and in this way, one hall sensor can be installed at a small amount, so that the cost is reduced, because the magnet position installed on the pan body will not be displaced basically after the pressure cooker is used for a period of time, when the reference value of the pressure cooker is determined through the advanced experimental test after leaving the factory, the second hall sensor is not required to be additionally installed, and a certain error exists between the reference value obtained by the method of calculating the reference value and then averaging the reference value through the sample pressure cooker test and the actual pressure cooker leaving the factory, and the error can be reduced by measuring more samples.

The fixed reference value set in the program is obtained through experimental test, and the error between the fixed reference value and the actual reference value is large, so that the reference value deviation caused by assembly is reduced by obtaining a large amount of test data and obtaining an average value due to the influence of the assembly of the whole machine, and one Hall sensor can be saved when the average value of a plurality of voltage values is determined as the reference voltage value and the reference voltage value is determined, so that the cost is reduced.

After the current voltage difference is obtained, whether the pressure in the pressure cooker reaches the target pressure level is confirmed according to the current voltage difference, and optionally, in the control method of the pressure cooker provided by the embodiment of the application, the operation of controlling the pressure cooker according to the comparison result comprises the following steps: controlling the pressure cooker to stop heating under the condition that the comparison result indicates that the current voltage difference value is smaller than the target voltage difference value; and under the condition that the comparison result indicates that the current voltage difference value is larger than or equal to the target voltage difference value, controlling the pressure cooker to continue heating.

Specifically, the current voltage difference is an instantaneous voltage difference measured when the pressure cooker works, as shown in fig. 3, in the working process of the pressure cooker, the micro control unit firstly initializes two AD ports, samples the values of AD1 and AD2 through a circuit of the micro control unit and calculates delta AD, the delta AD is classified by a pressure class program, whether the delta AD is in a safe working range is judged, if the delta AD is not in a safe working range, an alarm prompt is not sent out, if the delta AD is not in the safe working range, the working flow is continuously executed, whether the heating work is started is determined through a switch, if the heating work is started, the current voltage difference is compared with a target voltage difference corresponding to a preset grade, if the current voltage difference is smaller than the target voltage difference, the pressure cooker is controlled to stop heating, and if the current voltage difference is larger than the target voltage difference, heating is resumed until the current voltage difference reaches the end of the target voltage difference work.

For example, when the spareribs are stewed by using the pressure cooker, the pressure cooker needs to be adjusted to a working gear of a second gear, at the moment, the preset target voltage difference value corresponding to the second gear of the pressure cooker is delta AD2, the current voltage difference value measured in the working process of the pressure cooker is delta AD, the delta AD2 is a voltage difference value corresponding to 50kPa, and the preset pressure of the spareribs is 50kPa, so that when the spareribs are stewed, the pressure in the cooker can be considered to reach the required pressure value only by detecting the difference value delta AD < [ delta ] AD2 between AD1 and AD2, the heating is stopped, the avoiding pressure continues to be increased, when the difference value delta AD > [ delta ] AD2 between AD1 and AD2 is detected, the pressure in the cooker is reduced to be lower than 50kPa, at the moment, the heating is recovered, the pressure is continuously increased, and the pressure is precisely controlled. The pressure in the pressure cooker can be accurately controlled within the target pressure range by controlling the operation of the pressure cooker through the comparison result of the current voltage difference value and the target voltage difference value.

Optionally, in the control method of the pressure cooker provided in the embodiment of the application, before comparing the current voltage difference value with the target voltage difference value to obtain a comparison result, the method further includes: judging whether the current voltage difference value falls within a preset voltage difference value range or not; under the condition that the current voltage difference value falls in a preset voltage difference value range, executing the step of comparing the current voltage difference value with a target voltage difference value to obtain a comparison result; and outputting alarm information under the condition that the current voltage difference value does not fall in the preset voltage difference value range.

Specifically, the distance D between the hall sensor and the magnet cannot be infinite or infinite small, as shown in fig. 4a, when D is maximum, D is D1, poor sensor assembly cannot sense internal pressure change, as shown in fig. 4b, when D is minimum, D is D2, the outer pot of the pressure cooker is seriously deformed, and the normal operation of the pressure cooker can be ensured only within a safety range, which is obtained by test, and by limiting Δad through a program, for example, setting a maximum voltage difference and a minimum voltage difference to limit Δad within the safety range, and alarming when the voltage difference exceeds the safety range, so that the pressure cooker is prevented from being damaged by abnormal pressure in the pressure cooker.

In the method for controlling a pressure cooker provided by the embodiment of the application, optionally, when the current voltage difference value does not fall within the preset voltage difference value range, outputting the alarm information includes: outputting first alarm information when the current voltage difference value does not fall in a preset voltage difference value range and when the current voltage difference value is larger than the upper limit value of the preset voltage difference value range, wherein the first alarm information is used for indicating that the first magnetic field sensor cannot detect the magnetic field intensity; outputting second alarm information under the condition that the current voltage difference is smaller than the small limit value of the preset voltage difference range, wherein the second alarm information is used for indicating that the deformation size of the outer pot is larger than the preset size.

Specifically, when the current voltage difference delta AD measured by the pressure cooker is not in the safety range, the pressure cooker correspondingly outputs alarm information, for example, when the delta AD is larger than the maximum voltage difference, the distance D between the Hall sensor and the magnet is too large, the Hall sensor cannot sense magnetic field change, the pressure cooker sends out alarm information to prompt poor assembly of the Hall sensor, when the delta AD is smaller than the minimum voltage difference, the distance D between the Hall sensor and the magnet is too small, the pressure cooker is pressed and expanded to deform the outer cooker, the pressure cooker sends out alarm information to prompt the pressure to be too large, and heating is stopped. The fault position of the pressure cooker with the problem can be accurately found out through the prompt information.

The magnetic field sensor is more various, and optionally, in the control method of the pressure cooker provided in the embodiment of the application, the first magnetic field sensor is a hall sensor.

Specifically, the first magnetic field sensor is a hall sensor, under the condition that the outer pot at the bottom of the elastic outer pot is elastically deformed to generate displacement change, the relative displacement between the hall sensor and the magnet also changes, the strength of the sensed magnetic field changes along with the displacement change, the displacement change is converted into an electric signal, and a voltage value acquired by the hall sensor is AD1 by a circuit sampling of the micro control unit. The Hall sensor can accurately obtain a first voltage value corresponding to the magnetic field intensity between the outer pot and the pot body of the pressure cooker.

According to an embodiment of the present application, a pressure cooker is provided. As shown in fig. 5, the pressure cooker includes: an inner pan 501, and a cover 502 provided on top of the inner pan 501, the cover 502 being used to seal the inner pan 501; an outer pot 503, disposed outside the inner pot 501, and provided with a first magnetic field sensor 504 on the outer pot 503, for detecting the magnetic field intensity between the outer pot 503 and the pot body 505, and converting the magnetic field intensity into a first voltage value; the pot body 505 is arranged outside the outer pot 503, and the pot body 505 is provided with a magnet 506 and a second magnetic field sensor 507 for detecting the magnetic field intensity between the pot body 505 and the outer pot 503 and converting the magnetic field intensity into a second voltage value; and the microcontroller unit 508 is connected with the first magnetic field sensor 504 and the second magnetic field sensor 507, and is configured to compare the first voltage value with the second voltage value to obtain a current voltage difference value, compare the current voltage difference value with a target voltage difference value to obtain a comparison result, and control the operation of the heating device according to the comparison result, where the target voltage difference value is a voltage difference value corresponding to a target pressure level in a first pressure level table, the first pressure level table includes a plurality of pressure levels and voltage difference values corresponding to each pressure level, the first pressure level table is determined in the plurality of pressure level tables according to an initial voltage difference value, and the initial voltage difference value is a difference value between a voltage value sent by the first magnetic field sensor 504 and a voltage value sent by the second magnetic field sensor 507 in a state that the pressure cooker is not operated.

Specifically, the inner pot 501 is a container for placing cooking food, the pot cover 502 is a cover for sealing the inner pot to prevent the space in the inner pot from contacting with the external air, the outer pot 503 is a protective cover of the inner pot 501, a first magnetic field sensor 504 is arranged on the outer side of the bottom of the outer pot 503, the inner space of the inner pot 501 is heated by the pressure pot, the pressure of the inner space of the outer pot 501 is increased to cause elastic deformation of the outer pot 503, at the moment, the distance between the outer pot 503 and the bottom of the pot 505 is changed to cause the magnetic field intensity between the outer pot 503 and the pot 505 to be changed, so that the first magnetic field sensor 504 reads a first voltage value for representing the pressure condition in the pressure pot at the moment, the pot 505 is an external supporting structure of the pressure pot, meanwhile, the magnet 506 is installed on the inner side of the bottom of the pot body 505, and is used for forming a magnetic field between the outer pot 503 and the pot body 505, the second magnetic field sensor 507 is fixed on the inner side of the bottom of the pot body 505, and the bottom of the pot body 505 is not pressed to generate displacement change, namely, the relative displacement between the second magnetic field sensor 507 and the magnet is fixed, so that the second magnetic field sensor 507 measures the initial magnetic field intensity between the outer pot 503 and the pot body 505, the initial magnetic field intensity corresponds to a reference voltage value, and the microcontroller unit 508 determines the pressure in the pressure pot through the reference voltage values and the first voltage values acquired by the first magnetic field sensor 504 and the second magnetic field sensor 507 and controls the pressure pot to heat or stop the heating work.

The first magnetic field sensor 504 and the second magnetic field sensor 507 may be hall sensors, the hall sensor and the magnet 506 corresponding to the second magnetic field sensor 507 are both fixed at the bottom of the pot body, the bottom of the pot body is not subject to displacement change due to pressure, that is, the relative displacement between the hall sensor corresponding to the second magnetic field sensor 507 and the magnet is fixed, the voltage value obtained by the hall sensor corresponding to the second magnetic field sensor 507 is sampled by the microcontroller unit 508 to be used as a reference value, the accuracy of the reference value can be ensured, and no error occurs, so that when the pressure cooker works, the pressure cooker is accurately controlled to work under a specified pressure level.

According to an embodiment of the present application, another pressure cooker is provided. As shown in fig. 6, the pressure cooker includes: an inner pan 601, and a cover 602 disposed on top of the inner pan 601, the cover 602 for sealing the inner pan 601; an outer pot 603, which is arranged outside the inner pot 601, and a first magnetic field sensor 604 is arranged on the outer pot 603 and is used for detecting the magnetic field intensity between the outer pot 603 and the pot body 605 and converting the magnetic field intensity into a first voltage value; the pot body 605 is arranged outside the outer pot 603, and a magnet 606 is arranged on the pot body 605; the microcontroller unit 607 is connected to the first magnetic field sensor 604, and is configured to compare the first voltage value with a reference voltage value to obtain a current voltage difference value, and compare the current voltage difference value with a target voltage difference value to obtain a comparison result, and control the operation of the heating device according to the comparison result, where the target voltage difference value is a voltage difference value corresponding to a target pressure level in a first pressure level table, the first pressure level table includes a plurality of pressure levels and a voltage difference value corresponding to each pressure level, the first pressure level table is determined in the plurality of pressure level tables according to an initial voltage difference value, and the initial voltage difference value is a difference value between a voltage value sent by the first magnetic field sensor 604 and the reference voltage value in a state where the pressure cooker is not operated.

Specifically, the inner pot 601 is a container for placing cooking food, the pot cover 602 is a cover for sealing the inner pot to prevent the space in the inner pot from being contacted with external air, the outer pot 603 is a protective cover of the inner pot 601, a first magnetic field sensor 604 is arranged on the outer side of the bottom of the outer pot 603, elastic deformation of the outer pot 603 is caused by pressure increase of the inner space of the inner pot 601 heated by the pressure pot, at the moment, the distance between the outer pot 603 and the bottom of the pot 605 is changed, the magnetic field strength between the outer pot 603 and the pot 605 is caused to be changed, so that the first magnetic field sensor 604 reads a first voltage value for representing the pressure condition in the pressure pot at the moment, the pot 605 is an external supporting structure of the pressure pot, meanwhile, a magnet 606 is arranged on the inner side of the bottom of the pot 605 and used for forming a magnetic field between the outer pot 603 and the pot 605, and the microcontroller unit 607 determines the pressure in the pressure pot through the first voltage value collected by the first magnetic field sensor 604 and a reference voltage value set in a program and controls the pressure pot to heat or stop heating.

In this embodiment, the reference value may be directly measured by calculating an average value of a batch of samples, so that the cost is reduced by installing one hall sensor less, and since the magnet position installed on the pot body is not displaced basically after the pressure cooker is used for a period of time, when the reference value of the pressure cooker is determined through advanced experimental tests after leaving the factory, a second hall sensor is not required to be additionally installed, and it is noted that a certain error exists between the reference value obtained by calculating the reference value by the sample pressure cooker test and the actual pressure cooker leaving the factory, and the error can be reduced by measuring more samples, so that the pressure cooker is accurately controlled to work under the specified pressure level when the pressure cooker works.

According to an embodiment of the present application, a pressure cooker is provided. As shown in fig. 7, the pressure cooker includes: an inner pot 701, and a cover 702 provided on top of the inner pot 701, the cover 702 being used to seal the inner pot 701; an outer pot 703, disposed outside the inner pot 701, on which the magnet 706 and the second magnetic field sensor 707 are disposed, for detecting the magnetic field intensity between the outer pot 703 and the pot body 705 and converting the magnetic field intensity into a second voltage value; the pot body 705 is arranged outside the outer pot 703, and a first magnetic field sensor 704 is arranged on the pot body 705 and used for detecting the magnetic field intensity between the pot body 705 and the outer pot 703 and converting the magnetic field intensity into a first voltage value; and the microcontroller unit 708 is connected with the first magnetic field sensor 704 and the second magnetic field sensor 707, and is configured to compare the first voltage value with the second voltage value to obtain a current voltage difference value, compare the current voltage difference value with a target voltage difference value to obtain a comparison result, and control the operation of the heating device according to the comparison result, where the target voltage difference value is a voltage difference value corresponding to a target pressure level in a first pressure level table, the first pressure level table includes a plurality of pressure levels and voltage difference values corresponding to each pressure level, the first pressure level table is determined in the plurality of pressure level tables according to an initial voltage difference value, and the initial voltage difference value is a difference value between a voltage value sent by the first magnetic field sensor 704 and a voltage value sent by the second magnetic field sensor 707 in a state where the pressure cooker is not operated.

Specifically, the inner pot 701 is a container for placing food, the pot cover 702 is a cover for sealing the inner pot to prevent the space in the inner pot from contacting with external air, the outer pot 703 is a protective cover of the inner pot 701, a magnet 706 and a second magnetic field sensor 707 are arranged on the outer side of the bottom of the outer pot 703, and the relative displacement between the second magnetic field sensor 707 and the magnet is fixed, so that the second magnetic field sensor 707 measures the initial magnetic field intensity between the outer pot 703 and the pot body 705, the initial magnetic field intensity corresponds to a reference voltage value, the pot body 705 is an external supporting structure of the pressure pot, meanwhile, a first magnetic field sensor 704 is arranged on the inner side of the bottom of the pot body 705, the inner space of the inner pot 701 is heated by the pressure pot to cause elastic deformation of the outer pot 703, the bottom of the pot body 705 cannot be subjected to pressure change, the distance between the outer pot 703 and the bottom of the pot body changes, the magnetic field intensity between the outer pot 703 and the pot body 705 changes, the first magnetic field sensor reads the first voltage value at this moment, the pressure condition in the pressure pot can be represented, the microcontroller unit 708 can heat the first magnetic field sensor 704 and the reference voltage value through the first magnetic field sensor 704, or control the heating of the first magnetic field sensor 704, or the heating of the pressure pot is stopped, or the pressure in the pressure cooker is controlled, and the pressure condition is determined.

The first magnetic field sensor 704 and the second magnetic field sensor 707 may be hall sensors, the relative displacement between the hall sensor corresponding to the second magnetic field sensor 707 and the magnet 706 is fixed, and the microcontroller unit 708 samples the voltage value obtained by the hall sensor corresponding to the second magnetic field sensor 707 as a reference value, so that the accuracy of the reference value can be ensured, no error occurs, and thus, when the pressure cooker works, the pressure cooker can be accurately controlled to work under a specified pressure level.

According to an embodiment of the present application, another pressure cooker is provided. As shown in fig. 8, the pressure cooker includes: an inner pan 801, and a cover 802 provided on top of the inner pan 801, the cover 802 being used to seal the inner pan 801; an outer pan 803 arranged outside the inner pan 801, a magnet 806 being arranged on the outer pan 803; the pot body 805 is arranged outside the outer pot 803, and a first magnetic field sensor 804 is arranged on the pot body 805 and used for detecting the magnetic field intensity between the outer pot 803 and the pot body 805 and converting the magnetic field intensity into a first voltage value; and the microcontroller unit 807 is connected to the first magnetic field sensor 804, and is configured to compare the first voltage value with a reference voltage value to obtain a current voltage difference value, and compare the current voltage difference value with a target voltage difference value to obtain a comparison result, and control the operation of the heating device according to the comparison result, where the target voltage difference value is a voltage difference value corresponding to a target pressure level in a first pressure level table, the first pressure level table includes a plurality of pressure levels and a voltage difference value corresponding to each pressure level, the first pressure level table is determined in the plurality of pressure level tables according to an initial voltage difference value, and the initial voltage difference value is a difference value between a voltage value sent by the first magnetic field sensor 804 and the reference voltage value in a state where the pressure cooker is not operated.

Specifically, the inner pot 801 is a container for placing cooking food, the pot cover 802 is a cover for sealing the inner pot to prevent the space in the inner pot from being contacted with external air, the outer pot 803 is a protective cover of the inner pot 801, a magnet 806 is arranged on the outer side of the bottom of the outer pot 803 and is used for forming a magnetic field between the outer pot 803 and the pot body 805, the pot body 805 is an external supporting structure of the pressure pot, meanwhile, a first magnetic field sensor 804 is arranged on the inner side of the bottom of the pot body 805, the inner space of the inner pot 801 is heated through the pressure pot to cause elastic deformation of the outer pot 803, at the moment, the distance between the outer pot 803 and the bottom of the pot body 805 changes, the magnetic field intensity between the outer pot 803 and the pot body 805 changes, the first magnetic field sensor 804 reads a first voltage value to represent the pressure condition in the pressure pot at the moment, and the microcontroller unit 807 determines the pressure in the pressure pot through the first voltage value acquired by the first magnetic field sensor 804 and a reference voltage value set in a program and controls the pressure pot to heat or stop heating.

In this embodiment, the reference value may be directly measured by calculating an average value of a batch of samples, so that the cost is reduced by installing one hall sensor less, and since the magnet 806 installed on the pot 805 is not displaced basically after the pressure cooker is used for a period of time, when the reference value of the pressure cooker is determined through an early experimental test after leaving the factory, a second hall sensor is not required to be additionally installed, and it is noted that a certain error exists between the reference value obtained by calculating the reference value by the sample pressure cooker test and the actual pressure cooker leaving the factory, and the error can be reduced by measuring more samples, so that the pressure cooker is accurately controlled to work under the specified pressure level when the pressure cooker works.

It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer executable instructions, and that although a logical order is illustrated in the flowcharts, in some cases the steps illustrated or described may be performed in an order other than that illustrated herein.

The embodiment of the application also provides a control device of the pressure cooker, and the control device of the pressure cooker can be used for executing the control method for the pressure cooker. The following describes a control device of a pressure cooker provided in an embodiment of the present application.

Fig. 9 is a schematic view of a control device of a pressure cooker according to an embodiment of the application. As shown in fig. 9, the apparatus includes:

the receiving unit 901 is configured to receive a first voltage value sent by a first magnetic field sensor during a working process of the pressure cooker, and compare the first voltage value with a reference voltage value to obtain a current voltage difference value, where the first magnetic field sensor is disposed on an outer pot of the pressure cooker, and a magnet is disposed on a pot body of the pressure cooker, or the first magnetic field sensor is disposed on a pot body of the pressure cooker, and a magnet is disposed on the outer pot of the pressure cooker, where the current voltage difference value is used to characterize a current pressure condition of the outer pot of the pressure cooker.

The comparing unit 902 is configured to compare the current voltage difference with a target voltage difference to obtain a comparison result, where the target voltage difference is a voltage difference corresponding to a target pressure level in a first pressure level table, the first pressure level table includes a plurality of pressure levels and voltage differences corresponding to each pressure level, the first pressure level table is determined in the plurality of pressure level tables according to an initial voltage difference, and the initial voltage difference is a voltage difference between a voltage value sent by the first magnetic field sensor and a reference voltage value in a non-working state of the pressure cooker.

And a control unit 903 for controlling the operation of the pressure cooker according to the comparison result.

According to the control device of the pressure cooker, the receiving unit 901 is used for receiving the first voltage value sent by the first magnetic field sensor in the working process of the pressure cooker and comparing the first voltage value with the reference voltage value to obtain the current voltage difference value, wherein the first magnetic field sensor is arranged on the outer cooker of the pressure cooker, the magnet is arranged on the cooker body of the pressure cooker, and the current voltage difference value is used for representing the current pressure condition of the outer cooker of the pressure cooker; the comparing unit 902 compares the current voltage difference with a target voltage difference to obtain a comparison result, wherein the target voltage difference is a voltage difference corresponding to a target pressure level in a first pressure level table, the first pressure level table comprises a plurality of pressure levels and voltage differences corresponding to each pressure level, the first pressure level table is determined in the pressure level tables according to an initial voltage difference, and the initial voltage difference is a voltage difference between a voltage value sent by a first magnetic field sensor and a reference voltage value in a state that the pressure cooker does not work; the control unit 903 controls the operation of the pressure cooker according to the comparison result, solves the problem that the pressure cooker is not accurately controlled after being used for a long time in the related art, converts the pressure change in the pressure cooker into a voltage difference value through the magnetic field sensor and transmits the voltage difference value to the micro control unit, and the micro control unit controls the operation of the pressure cooker according to the preset pressure level so as to achieve the effect of accurately controlling the pressure in the pressure cooker.

Optionally, in the control device for a pressure cooker provided in the embodiment of the present application, the receiving unit 901 further includes: the first receiving module is used for receiving a second voltage value sent by the first magnetic field sensor in a non-working state of the pressure cooker before comparing the current voltage difference value with the target voltage difference value to obtain a comparison result; the first comparison module is used for comparing the second voltage value with a reference voltage value to obtain an initial voltage difference value; the first determining module is configured to determine pressure level tables corresponding to the initial voltage difference values in the plurality of pressure level tables, and obtain a first pressure level table, where each pressure level table is associated with a different initial voltage difference value range, different pressure level tables include the same number of pressure levels, and the voltage difference value ranges corresponding to the same pressure level in different pressure level tables are different.

Optionally, in the control device for a pressure cooker provided in the embodiment of the present application, the comparing unit 902 further includes: the second receiving module is used for receiving the voltage value sent by the second magnetic field sensor in the working process of the pressure cooker and determining the received voltage value as the reference voltage value before comparing the first voltage value with the reference voltage value to obtain the current voltage difference, wherein the second magnetic field sensor is arranged on the cooker body of the pressure cooker under the condition that the first magnetic field sensor is arranged on the outer cooker of the pressure cooker and a magnet is arranged on the cooker body of the pressure cooker, and the second magnetic field sensor is arranged on the outer cooker of the pressure cooker under the condition that the first magnetic field sensor is arranged on the cooker body of the pressure cooker and a magnet is arranged on the outer cooker of the pressure cooker.

Optionally, in the control device for a pressure cooker provided in the embodiment of the present application, the comparing unit 902 further includes: the third receiving module is used for respectively receiving the voltage values sent by the second magnetic field sensors in the working process of the plurality of sample pressure cookers before comparing the first voltage value with the reference voltage value to obtain the current voltage difference value, so as to obtain a plurality of voltage values, wherein the second magnetic field sensors are respectively arranged on the pot bodies of the plurality of sample pressure cookers when the first magnetic field sensors are arranged on the outer pot of the pressure cooker and the pot bodies of the pressure cooker are provided with magnets, and the second magnetic field sensors are respectively arranged on the outer pot of the plurality of sample pressure cookers when the first magnetic field sensors are arranged on the pot bodies of the pressure cooker and the outer pot of the pressure cooker are provided with magnets; and the second determining module is used for calculating the average value of the plurality of voltage values and determining the average value of the plurality of voltage values as a reference voltage value.

Optionally, in the control device for a pressure cooker provided in the embodiment of the present application, the control unit 903 includes: the first control module is used for controlling the pressure cooker to stop heating under the condition that the comparison result indicates that the current voltage difference value is smaller than the target voltage difference value; and the second control module is used for controlling the pressure cooker to continue heating under the condition that the comparison result indicates that the current voltage difference value is larger than or equal to the target voltage difference value.

Optionally, in the control device for a pressure cooker provided in the embodiment of the present application, the comparing unit 902 further includes: the judging module is used for judging whether the current voltage difference value falls in a preset voltage difference value range before comparing the current voltage difference value with the target voltage difference value to obtain a comparison result; the execution module is used for executing the step of comparing the current voltage difference value with the target voltage difference value to obtain a comparison result under the condition that the current voltage difference value falls in a preset voltage difference value range; the output module is used for outputting alarm information under the condition that the current voltage difference value does not fall in the preset voltage difference value range.

Optionally, in the control device for a pressure cooker provided in the embodiment of the application, the output module includes: the first output sub-module is used for outputting first alarm information when the current voltage difference value is not in the preset voltage difference value range and when the current voltage difference value is larger than the upper limit value of the preset voltage difference value range, wherein the first alarm information is used for indicating that the first magnetic field sensor cannot detect the magnetic field intensity; the second output sub-module is used for outputting second alarm information under the condition that the current voltage difference value is smaller than the small limit value of the preset voltage difference value range, wherein the second alarm information is used for indicating that the deformation size of the outer pot is larger than the preset size.

Optionally, in the control device for a pressure cooker provided in the embodiment of the application, the first magnetic field sensor is a hall sensor.

The control device of the pressure cooker comprises a processor and a memory, wherein the receiving unit 901, the comparing unit 902, the control unit 903 and the like are all stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions.

The processor includes a kernel, and the kernel fetches the corresponding program unit from the memory. The inner core can be provided with one or more than one, and the pressure in the pressure cooker is precisely controlled by adjusting the parameters of the inner core.

The memory may include volatile memory, random Access Memory (RAM), and/or nonvolatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM), among other forms in computer readable media, the memory including at least one memory chip.

The embodiment of the application also provides a nonvolatile storage medium, wherein the nonvolatile storage medium comprises a stored program, and the program is used for controlling equipment where the nonvolatile storage medium is located to execute a control method of the pressure cooker when running.

The embodiment of the application also provides an electronic device, which comprises a processor and a memory; the memory stores computer readable instructions, and the processor is configured to execute the computer readable instructions, wherein the computer readable instructions execute a method for controlling the pressure cooker when executed. The electronic device herein may be a server, a PC, a PAD, a mobile phone, etc.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

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

The memory may include volatile memory in a computer-readable medium, random Access Memory (RAM) and/or nonvolatile memory, etc., such as Read Only Memory (ROM) or flash RAM. Memory is an example of a computer-readable medium.

Computer readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer 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 disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises an element.

The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.

Claims

1. A control method of a pressure cooker, comprising:

in the working process of the pressure cooker, a first voltage value sent by a first magnetic field sensor is received, the first voltage value is compared with a reference voltage value to obtain a current voltage difference value, wherein the first magnetic field sensor is arranged on an outer cooker of the pressure cooker, a magnet is arranged on a cooker body of the pressure cooker, or the first magnetic field sensor is arranged on a cooker body of the pressure cooker, a magnet is arranged on the outer cooker of the pressure cooker, and the current voltage difference value is used for representing the current pressure condition of the outer cooker of the pressure cooker;

comparing the current voltage difference with a target voltage difference to obtain a comparison result, wherein the target voltage difference is a voltage difference corresponding to a target pressure level in a first pressure level table, the first pressure level table comprises a plurality of pressure levels and voltage differences corresponding to each pressure level, the first pressure level table is determined in the plurality of pressure level tables according to an initial voltage difference, and the initial voltage difference is a voltage difference between a voltage value sent by the first magnetic field sensor and the reference voltage value in a state that the pressure cooker does not work;

And controlling the operation of the pressure cooker according to the comparison result.

2. The method of claim 1, wherein prior to comparing the current voltage difference to a target voltage difference, the method further comprises:

receiving a second voltage value sent by the first magnetic field sensor in a non-working state of the pressure cooker;

comparing the second voltage value with the reference voltage value to obtain the initial voltage difference value;

and determining a pressure level table corresponding to the initial voltage difference value in a plurality of pressure level tables to obtain the first pressure level table, wherein each pressure level table is associated with different initial voltage difference value ranges, different pressure level tables contain the same number of pressure levels, and the voltage difference value ranges corresponding to the same pressure level in different pressure level tables are different.

3. The method of claim 1, wherein prior to comparing the first voltage value with a reference voltage value to obtain a current voltage difference, the method further comprises:

and in the working process of the pressure cooker, receiving a voltage value sent by a second magnetic field sensor, and determining the received voltage value as the reference voltage value, wherein the second magnetic field sensor is arranged on the cooker body of the pressure cooker when the first magnetic field sensor is arranged on the outer cooker of the pressure cooker and a magnet is arranged on the cooker body of the pressure cooker, and the second magnetic field sensor is arranged on the outer cooker of the pressure cooker when the first magnetic field sensor is arranged on the cooker body of the pressure cooker and a magnet is arranged on the outer cooker of the pressure cooker.

4. The method of claim 1, wherein prior to comparing the first voltage value with a reference voltage value to obtain a current voltage difference, the method further comprises:

receiving voltage values sent by a second magnetic field sensor respectively in the working process of a plurality of sample pressure cookers to obtain a plurality of voltage values, wherein when the first magnetic field sensor is arranged on an outer pot of the pressure cooker and a magnet is arranged on a pot body of the pressure cooker, the second magnetic field sensor is arranged on the pot body of the plurality of sample pressure cookers respectively, and when the first magnetic field sensor is arranged on the pot body of the pressure cooker and a magnet is arranged on the outer pot of the pressure cooker, the second magnetic field sensor is arranged on the outer pot of the plurality of sample pressure cookers respectively;

an average value of the plurality of voltage values is calculated, and the average value of the plurality of voltage values is determined as the reference voltage value.

5. The method of claim 1, wherein controlling operation of the pressure cooker based on the comparison result comprises:

controlling the pressure cooker to stop heating under the condition that the comparison result indicates that the current voltage difference value is smaller than the target voltage difference value;

And under the condition that the comparison result indicates that the current voltage difference value is larger than or equal to the target voltage difference value, controlling the pressure cooker to continue heating.

6. The method of claim 1, wherein prior to comparing the current voltage difference to a target voltage difference, the method further comprises:

judging whether the current voltage difference value falls within a preset voltage difference value range or not;

executing the step of comparing the current voltage difference value with a target voltage difference value to obtain a comparison result under the condition that the current voltage difference value falls in the preset voltage difference value range;

and outputting alarm information under the condition that the current voltage difference value does not fall in the preset voltage difference value range.

7. The method of claim 6, wherein outputting an alarm message if the current voltage difference does not fall within the preset voltage difference range comprises:

outputting first alarm information when the current voltage difference value does not fall in the preset voltage difference value range and when the current voltage difference value is larger than the upper limit value of the preset voltage difference value range, wherein the first alarm information is used for indicating that the first magnetic field sensor cannot detect the magnetic field intensity;

Outputting second alarm information under the condition that the current voltage difference is smaller than the small limit value of the preset voltage difference range, wherein the second alarm information is used for indicating that the deformation size of the outer pot is larger than the preset size.

8. The method of claim 1, wherein the first magnetic field sensor is a hall sensor.

9. A pressure cooker, comprising:

the inner pot and the pot cover are arranged at the top of the inner pot, and the pot cover is used for sealing the inner pot;

the outer pot is arranged outside the inner pot, and is provided with a first magnetic field sensor for detecting the magnetic field intensity between the outer pot and the pot body and converting the magnetic field intensity into a first voltage value;

the pot body is arranged outside the outer pot, a magnet and a second magnetic field sensor are arranged on the pot body, and the pot body is used for detecting the magnetic field intensity between the pot body and the outer pot and converting the magnetic field intensity into a second voltage value;

and the microcontroller unit is connected with the first magnetic field sensor and the second magnetic field sensor and is used for comparing the first voltage value with the second voltage value to obtain a current voltage difference value, comparing the current voltage difference value with a target voltage difference value to obtain a comparison result and controlling the operation of the heating device according to the comparison result, wherein the target voltage difference value is a voltage difference value corresponding to a target pressure grade in a first pressure grade table, the first pressure grade table comprises a plurality of pressure grades and voltage difference values corresponding to each pressure grade, the first pressure grade table is determined in the plurality of pressure grade tables according to an initial voltage difference value, and the initial voltage difference value is a difference value between a voltage value sent by the first magnetic field sensor and a voltage value sent by the second magnetic field sensor in a state that the pressure cooker does not work.

10. A pressure cooker, comprising:

the outer pot is arranged outside the inner pot, a magnet and a second magnetic field sensor are arranged on the outer pot, and the outer pot is used for detecting the magnetic field intensity between the outer pot and the pot body and converting the magnetic field intensity into a second voltage value;

the pot body is arranged outside the outer pot, and a first magnetic field sensor is arranged on the pot body and used for detecting the magnetic field intensity between the pot body and the outer pot and converting the magnetic field intensity into a first voltage value;

11. A pressure cooker, comprising:

the pot body is arranged outside the outer pot, and a magnet is arranged on the pot body;

and the microcontroller unit is connected with the first magnetic field sensor and is used for comparing the first voltage value with a reference voltage value to obtain a current voltage difference value, comparing the current voltage difference value with a target voltage difference value to obtain a comparison result, and controlling the operation of the heating device according to the comparison result, wherein the target voltage difference value is a voltage difference value corresponding to a target pressure level in a first pressure level meter, the first pressure level meter comprises a plurality of pressure levels and voltage difference values corresponding to each pressure level, the first pressure level meter is determined in the plurality of pressure level meters according to an initial voltage difference value, and the initial voltage difference value is a difference value between the voltage value sent by the first magnetic field sensor and the reference voltage value under the non-operating state of the pressure cooker.

12. A pressure cooker, comprising:

the outer pot is arranged outside the inner pot, and a magnet is arranged on the outer pot;

the cooker body is arranged outside the outer cooker, and is provided with a first magnetic field sensor for detecting the magnetic field intensity between the outer cooker and the cooker body and converting the magnetic field intensity into a first voltage value;

13. A non-volatile storage medium for storing a program, wherein the program, when run, controls a device in which the non-volatile storage medium is located to perform the control method of the pressure cooker according to any one of claims 1 to 8.

14. An electronic device comprising a processor and a memory, the memory having stored therein computer readable instructions for executing the computer readable instructions, wherein the computer readable instructions when executed perform the method of controlling a pressure cooker according to any one of claims 1 to 8.