Cooking equipment, zero-pressure detection method thereof and computer storage medium

Abstract

The invention provides a zero-pressure detection method of cooking equipment, the cooking equipment and a computer storage medium. The zero-pressure detection method comprises the following steps: acquiring a displacement signal output by a displacement detection piece based on the displacement amount of the cooking equipment, determining a zero-pressure judgment parameter, and determining whether pressure exists in a cooking cavity of the cooking mechanism based on the displacement signal and the zero-pressure judgment parameter. Through the mode, the zero-pressure detection structure of the cooking equipment can be simplified, and the cost is saved.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and in particular to a zero-pressure detection method for a cooking device, a cooking device, and a computer storage medium. Background Art

[0002] In related art, cooking equipment, such as pressure cookers, uses a pressure sensor to detect the position of a zero-pressure float, combined with circuit design. For example, a reed switch is used. When there is pressure in the pot, the zero-pressure float rises. The reed switch detects that the float rises and deems that zero pressure (pressure) is detected. When there is no pressure in the pot, the zero-pressure float falls. The reed switch detects that the zero-pressure float falls and deems that no zero pressure (no pressure) is detected. However, this solution is complex in structure and relatively expensive. Summary of the Invention

[0003] The present application provides a zero-pressure detection method for a cooking device, a cooking device, and a computer storage medium, so as to simplify the zero-pressure detection structure of the cooking device and save costs.

[0004] To address the above technical issues, the present application employs a technical solution: providing a zero-pressure detection method for a cooking device. The cooking device includes a cooking mechanism and a displacement detection element for measuring the displacement of the cooking mechanism. The zero-pressure detection method comprises: obtaining a displacement signal output by the displacement detection element based on the displacement of the cooking mechanism; determining a zero-pressure determination parameter; and determining whether pressure exists within the cooking chamber of the cooking mechanism based on the displacement signal and the zero-pressure determination parameter.

[0005] The cooking mechanism includes a heating mechanism, and determining the zero-pressure determination parameter includes: determining a positional relationship between the displacement detection element and the heating mechanism; and determining the zero-pressure determination parameter based on the positional relationship.

[0006] Wherein, determining the zero-pressure judgment parameter based on the positional relationship includes: in response to the positional relationship being a first relationship, obtaining the maximum deformation amount of the heating mechanism at the position corresponding to the first relationship, and determining the zero-pressure judgment parameter based on the maximum deformation amount; wherein, the first relationship makes the direction of the displacement signal generated by the displacement detection member affected by the deformation of the heating mechanism consistent with the direction of the displacement signal generated by the pressure in the cooking cavity of the cooking mechanism.

[0007] Determining the zero-pressure determination parameter based on the maximum deformation amount includes: obtaining the sum of the maximum deformation amount and a preset determination parameter as the zero-pressure determination parameter.

[0008] Among them, determining the zero pressure judgment parameter based on the position relationship also includes: in response to the position relationship being a second relationship, using the preset judgment parameter as the zero pressure judgment parameter; wherein the second relationship makes the displacement signal generated by the displacement detection member not affected by the deformation of the heating mechanism.

[0009] Among them, determining the zero-pressure judgment parameter based on the position relationship also includes: in response to the position relationship being a third relationship, setting the displacement detection member to zero when the displacement signal is negative, and using the preset judgment parameter as the zero-pressure judgment parameter; wherein, the third relationship makes the displacement signal generated by the displacement detection member affected by the deformation of the heating mechanism opposite to the direction of the displacement signal generated by the pressure in the cooking cavity of the cooking mechanism.

[0010] Among them, determining the zero-pressure judgment parameter based on the position relationship also includes: in response to the position relationship being a third relationship, obtaining the maximum deformation of the heating mechanism at the position corresponding to the third relationship; obtaining the difference between the maximum deformation and the preset judgment parameter as the zero-pressure judgment parameter; wherein the third relationship makes the displacement signal generated by the displacement detection part affected by the deformation of the heating mechanism and the displacement signal generated by the pressure in the cooking cavity of the cooking mechanism have opposite directions.

[0011] Among them, the zero pressure judgment parameter includes: a pressure judgment parameter; determining whether there is pressure in the cooking cavity of the cooking mechanism based on the displacement signal and the zero pressure judgment parameter, including: obtaining the pressure value of the cooking mechanism based on the displacement signal; determining whether there is pressure in the cooking cavity of the cooking mechanism based on the pressure value and the pressure judgment parameter.

[0012] Among them, the pressure judgment parameter includes a pressure judgment parameter with pressure and a pressure-free pressure judgment parameter; determining whether there is pressure in the cooking cavity of the cooking mechanism based on the pressure value and the pressure judgment parameter includes: in response to the pressure value being greater than or equal to the pressure judgment parameter with pressure, determining that there is pressure in the cooking cavity of the cooking mechanism; in response to the pressure value being less than or equal to the pressure judgment parameter without pressure, determining that there is no pressure in the cooking cavity of the cooking mechanism.

[0013] Among them, determining whether there is pressure in the cooking cavity of the cooking mechanism based on the pressure value and the zero pressure judgment parameter also includes: in response to the pressure value being less than zero, setting the pressure value to zero; in response to the pressure value being greater than zero, comparing the pressure value with the pressure judgment parameter.

[0014] Among them, the zero pressure judgment parameter includes: a signal judgment parameter; determining whether there is pressure in the cooking cavity of the cooking mechanism based on the displacement signal and the zero pressure judgment parameter, including: obtaining the signal parameter of the displacement signal; determining whether there is pressure in the cooking cavity of the cooking mechanism based on the signal parameter and the signal judgment parameter.

[0015] To solve the above technical problems, another technical solution adopted by this application is to provide a cooking device. The cooking device includes: a cooking mechanism; a displacement detection member disposed on the cooking mechanism or within a cooking cavity of the cooking mechanism; and a control mechanism connected to the displacement detection member and the cooking mechanism, and configured to perform zero-pressure detection using the above-described zero-pressure detection method.

[0016] To solve the above technical problem, another technical solution adopted by the present application is to provide a computer storage medium having program instructions stored thereon, which are executed by a processor to implement the above zero-voltage detection method.

[0017] The present application provides a beneficial effect: the cooking device provided herein is provided with a displacement detection element for detecting the displacement of a cooking mechanism. The present application first obtains a displacement signal output by the displacement detection element based on the displacement of the cooking device, determines a zero-pressure determination parameter, and then determines whether there is pressure in the cooking cavity of the cooking mechanism based on the displacement signal and the zero-pressure determination parameter. Because the cooking mechanism produces different displacements under different pressures, the displacement detection element outputs different displacement signals based on the different displacements. Therefore, the displacement signal can reflect the pressure information of the cooking mechanism. The present application determines whether there is pressure in the cooking cavity of the cooking mechanism based on the displacement signal and the zero-pressure determination parameter, eliminating the need for a zero-pressure float and related circuitry. This simplifies the zero-pressure detection structure of the cooking device and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive work, among which:

[0019] Figure 1 This is a flow chart of an embodiment of a zero-pressure detection method for a cooking device of the present application;

[0020] Figure 2 Schematic diagram of the positional relationship between the installation position (detection position) of the displacement detection element of the present application and the hot plate;

[0021] Figure 3 yes Figure 1 Schematic diagram of the specific process of step S12 in the zero-pressure detection method of the embodiment;

[0022] Figure 4 yes Figure 1 A specific flow chart of step S13 in the zero-pressure detection method of the embodiment;

[0023] Figure 5 yes Figure 1 Another specific flow chart of step S13 in the zero-pressure detection method of the embodiment;

[0024] Figure 6 This is a structural diagram of an embodiment of the cooking device of the present application;

[0025] Figure 7This is a flow chart of an embodiment of a zero-pressure detection method for a cooking device of the present application;

[0026] Figure 8 It is a structural diagram of an embodiment of the computer storage medium of the present application. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0028] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0029] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0030] This application first proposes a zero-pressure detection method for cooking equipment, such as Figure 1 As shown, Figure 1 The present invention is a flow chart of an embodiment of a zero-pressure detection method for a cooking device according to the present invention. The cooking device according to this embodiment includes a cooking mechanism, which includes, for example, a pot, a pot lid, a heating mechanism (such as a heating plate), etc. The cooking mechanism according to this embodiment also includes a displacement detection element disposed within the pot, pot lid, heating mechanism, or a cooking member of the pot. The displacement detection element is used to directly detect the displacement of the pot, pot lid, or heating mechanism as the displacement of the cooking mechanism. The displacement detection element may include a displacement sensor, such as a potentiometer-type displacement sensor, a capacitive displacement sensor, or a linear displacement sensor.

[0031] In some embodiments, the cooking mechanism may further include an elastic member, such as an elastic diaphragm, which is arranged corresponding to the pot body, lid body or heating mechanism to move with the pot body, lid body or heating mechanism; the displacement detection member can detect the displacement of the elastic member to indirectly obtain the displacement of the pot body, lid body or heating mechanism as the displacement of the cooking mechanism.

[0032] The zero-voltage detection method of this embodiment specifically includes the following steps:

[0033] S11: Acquire a displacement signal output by the displacement detection member based on the displacement amount of the cooking mechanism.

[0034] The displacement detection element detects different displacements of the cooking mechanism and outputs different displacement signals. Therefore, the displacement signal output by the displacement detection element can be used to obtain pressure information of the cooking mechanism for zero pressure determination. The displacement signal can be identified by identifying signal parameters such as frequency or pulse width. Specifically, the pressure information of the cooking mechanism can be obtained from the displacement signal parameters such as frequency or pulse width.

[0035] S12: Determine zero pressure judgment parameters.

[0036] Among them, the zero pressure judgment parameter refers to the judgment threshold used to determine whether there is pressure in the cooking cavity of the cooking mechanism; the signal parameters of the above-mentioned displacement signal or the pressure information obtained from the signal parameters can be compared with the parameter threshold, and whether there is pressure in the cooking cavity of the cooking mechanism can be determined based on the comparison result.

[0037] The zero pressure determination parameter can be pre-stored in the cooking device before cooking to improve cooking efficiency.

[0038] During the assembly process of the cooking device, different cooking devices may have different positional relationships between the displacement detection member and the heating mechanism, such as the hot plate. The hot plate will deform during heating, so the displacement signal output by the displacement detection member may be affected by the deformation of the hot plate. Figure 2 As shown, Figure 2 It is a structural diagram showing the positional relationship between the installation position (detection position) of the displacement detection member of the present application and the hot plate.

[0039] Among them, Q1 is the shape of the hot plate in a cold state. Q2 is the shape of the hot plate when it is deformed by heat and has not yet been squeezed by the pot body (if there is pressure in the pot, it will squeeze the pot body and indirectly squeeze the hot plate). S1 refers to the first position (area) of the installation / detection of the displacement detection component. The characteristic of this first position is that the hot plate is cold in the initial state, and the displacement detection component is in the initial position at this time; when the hot plate is heated but not yet squeezed by the pot body, the hot plate deforms and squeezes the displacement detection component downward. The displacement detection component detects a displacement signal with positive pressure (the same direction as the displacement generated when there is pressure in the pot), but when pressure is generated in the pot, it squeezes the hot plate downward. The hot plate will first move towards the Q1 shape, and the displacement detection component detects a displacement signal with negative pressure (the opposite direction to the displacement generated when there is pressure in the pot) and then squeezes the displacement detection component downward. The displacement detection component detects a displacement signal with positive pressure again; that is, the deformation of the hot plate due to heat before the pressure is applied will also cause the displacement detection component to output a positive displacement signal. This error needs to be considered when determining zero pressure to avoid misjudgment. S2 refers to the second position where the displacement detector is installed / detected. The characteristic of this second position is that no matter whether the hot plate is deformed by heat or not, the displacement detector will not be squeezed due to its own changes. S3 refers to the third position (area) where the displacement detector is installed / detected. The characteristic of this third position is that in the initial state, the hot plate is cold, and the displacement detector is in the initial position. When the hot plate is heated but not yet squeezed by the pot body, the hot plate deforms and stretches the displacement detector upward. The displacement detector detects a displacement signal with a negative pressure (the opposite direction of the displacement generated when there is pressure in the pot body). However, when pressure is generated in the pot body, it squeezes the hot plate downward. The hot plate will first move towards the Q1 shape. The displacement detector detects a displacement signal with a positive pressure (the same direction of displacement generated when there is pressure in the pot body) and then squeezes the displacement detector downward. The displacement detector continues to detect a displacement signal with a positive pressure. That is, the displacement detector outputs a negative displacement signal due to the deformation of the hot plate due to heat before the pressure is applied. This error needs to be considered when determining zero pressure to avoid misjudgment.

[0040] To solve the above problem, this embodiment can be implemented as follows: Figure 3 The method described implements step S12, and the method of this embodiment includes step S31 and step S32.

[0041] Step S31: Determine the positional relationship between the displacement detection member and the heating mechanism.

[0042] The positional relationship between the displacement detecting member and the heating mechanism can include a first relationship, a second relationship, and a third relationship. The first relationship corresponds to S1 above, whereby the displacement signal generated by the displacement detecting member due to deformation of the heating mechanism and the displacement signal generated by the displacement detecting member due to pressure within the cooking chamber of the cooking mechanism are in the same direction. The second relationship corresponds to S2 above, whereby the displacement signal generated by the displacement detecting member is unaffected by the pressure within the cooking chamber of the heating mechanism. The third relationship corresponds to S3 above, whereby the displacement signal generated by the displacement detecting member due to deformation of the heating mechanism and the displacement signal generated by pressure within the cooking chamber of the cooking mechanism are in opposite directions.

[0043] Step S32: Determine a zero pressure determination parameter based on the positional relationship.

[0044] The zero pressure determination parameter is determined based on the first relationship, the second relationship, or the third relationship.

[0045] The above analysis shows that the aforementioned errors may occur due to differences in the positional relationship between the displacement detector and the heating mechanism, resulting in reduced accuracy in zero-pressure detection. Therefore, this embodiment determines the positional relationship between the displacement detector and the heating mechanism and determines the zero-pressure determination parameters based on this relationship. This can mitigate the impact of these errors on the accuracy of zero-pressure determination (pressure presence / absence determination), thereby improving the accuracy of zero-pressure determination.

[0046] Optionally, in response to the positional relationship between the displacement detecting member and the heating mechanism being a first relationship, the maximum deformation amount of the heating mechanism at a position corresponding to the first relationship is acquired, and the zero pressure determination parameter is determined based on the maximum deformation amount.

[0047] Specifically, the sum of the maximum deformation amount and the preset judgment parameter is obtained as the zero pressure judgment parameter.

[0048] The preset judgment parameter refers to the parameter threshold value for zero pressure judgment when the deformation of the heating mechanism is not considered.

[0049] From the above analysis, it can be seen that when the positional relationship between the displacement detection part and the heating mechanism is the first relationship, before the pressure is initiated, the deformation of the heating mechanism will cause the displacement detection part to output a positive displacement signal, which is the same direction as the displacement signal output by the displacement detection part caused by the displacement of the pot body. Therefore, it is necessary to add the maximum deformation variable of the heating mechanism at the position corresponding to the first relationship to the preset judgment parameter, so that the final zero-pressure judgment parameter can take into account the maximum deformation variable of the heating mechanism at the position corresponding to the first relationship, thereby improving the influence of the error caused by the maximum deformation variable of the heating mechanism at the position corresponding to the first relationship on the zero-pressure judgment.

[0050] For example, in prototype 1, the maximum downward displacement caused by the deformation of the hot plate S1 area is 2, and the preset judgment parameters are P0=3 and P1=1, wherein P0 is the preset pressure value for judging whether pressure is detected, and P1 is the preset pressure value for judging whether no pressure is detected, satisfying P0≥P1>0. If the displacement detection component is installed in the S1 area, the original P0 and P1 are added with the maximum deformation amount 2 of the hot plate S1 area, and the zero pressure judgment parameters corresponding to the S1 area are obtained as P0=5 and P1=3.

[0051] Optionally, in response to the positional relationship between the displacement detecting member and the heating mechanism being the second relationship, the preset determination parameter is used as the zero-pressure determination parameter.

[0052] When the positional relationship between the displacement detecting member and the heating mechanism is the second relationship, the output signal of the displacement detecting member will not be affected by the deformation of the heating mechanism, and thus the preset determination parameter can be directly used as the zero-pressure determination parameter.

[0053] When the positional relationship between the displacement detection member and the heating mechanism is the third relationship, the displacement detection member is reset to zero, and the preset judgment parameters are used as the zero-pressure judgment parameters. For example, in prototype 2, the displacement detection member is installed in the S3 area. The maximum upward displacement caused by the deformation of the hot plate S3 area is 2. The preset judgment parameters P0 = 3 and P1 = 1. The displacement detection member is affected by the deformation of the heating mechanism and produces a negative displacement signal. At this time, the displacement detection member can be reset to zero (which can be understood as setting a compensation value corresponding to the maximum deformation amount for the displacement detection member). Then, the preset judgment parameters P0 = 3 and P1 = 1 are used as the final zero-pressure judgment parameters.

[0054] In some embodiments, when the positional relationship between the displacement detection member and the heating mechanism is a third relationship, the maximum deformation of the heating mechanism at the position corresponding to the third relationship is obtained; the difference between the maximum deformation and the preset judgment parameter is obtained as the zero pressure judgment parameter; for example, prototype 3, the displacement detection member is installed in the S3 area, the maximum upward displacement caused by the deformation of the hot plate S3 area is 2, and the preset judgment parameters P0=1, P1=-1.

[0055] S13: Determine whether there is pressure in the cooking cavity of the cooking mechanism based on the displacement signal and the zero-pressure determination parameter.

[0056] Whether there is pressure in the cooking cavity of the cooking mechanism refers to whether the pressure in the cooking cavity reaches a determination threshold. If so, it is determined that there is pressure in the cooking cavity; if not, it is determined that there is no pressure in the cooking cavity.

[0057] Determining whether there is pressure in the cooking cavity can improve the safety and ease of operation of the cooking device, and can alleviate safety and improper operation issues caused by user operation due to pressure in the cooking cavity.

[0058] This embodiment first obtains a displacement signal output by the displacement detection element based on the displacement of the cooking device, determines a zero-pressure determination parameter, and then determines whether there is pressure in the cooking cavity of the cooking mechanism based on the displacement signal and the zero-pressure determination parameter. Because the cooking mechanism produces different displacements under different pressures, the displacement detection element outputs different displacement signals based on these displacements. Therefore, the displacement signal can reflect the pressure information of the cooking mechanism. This embodiment determines the presence of pressure in the cooking cavity of the cooking mechanism based on the displacement signal and the zero-pressure determination parameter. This eliminates the need for a zero-pressure float and related circuitry, simplifying the zero-pressure detection structure of the cooking device and saving costs.

[0059] Optionally, the zero pressure determination parameter of this embodiment includes a pressure determination parameter, which can be determined by Figure 4 The method shown implements step S13 , and the method of this embodiment includes step S41 and step S42 .

[0060] Step S41: Obtaining the pressure value of the cooking mechanism based on the displacement signal.

[0061] The relationship between the displacement signal of the displacement detection element and the pressure value of the cooking mechanism can be determined and pre-stored in the cooking device as a preset relationship. This preset relationship can be a conversion relationship between the frequency or pulse width of the displacement signal and the pressure value, or corresponding pre-stored data information. When performing zero-pressure detection, the pressure value corresponding to the displacement signal can be obtained based on this preset relationship as the pressure value of the cooking mechanism.

[0062] Step S42: determining whether there is pressure in the cooking cavity of the cooking mechanism based on the pressure value and the pressure determination parameter.

[0063] The pressure determination parameter includes a pressure determination parameter and a no-pressure determination parameter. If the pressure value is greater than or equal to the pressure determination parameter, it is determined that the cooking cavity of the cooking mechanism is pressurized. If the pressure value is less than or equal to the no-pressure determination parameter, it is determined that the cooking cavity of the cooking mechanism is no-pressured.

[0064] For example, in prototype 1, the maximum downward displacement caused by the deformation of the hot plate is 2, and the preset judgment parameters P0=3 and P1=1, wherein P0 is the preset pressure value for determining whether pressure is detected, and P1 is the preset pressure value for determining whether no pressure is detected, satisfying P0≥P1>0. If the displacement detection component is installed in the S1 area, the original P0 and P1 are added with the maximum deformation 2 of the hot plate at the position corresponding to the first relationship, and the zero pressure judgment parameters P0=5 and P1=3 corresponding to the S1 area are obtained; during the cooking process, when the pot body is heated and pressure is generated in the cooking cavity of the pot body, the pressure detected by the displacement signal output by the displacement detection component is greater than or equal to the pressure judgment parameter P0, that is, 5kPa, it is considered that pressure is detected, and there is pressure in the cooking cavity; when the pressure is released by exhaust, the pressure detected by the displacement signal output by the displacement detection component is less than or equal to the no-pressure judgment parameter P1, that is, 3kPa, it is considered that no pressure is detected, that is, there is no pressure in the cooking cavity.

[0065] For another example, in prototype 2, the displacement detection component is installed in the S3 area, and the maximum upward displacement caused by the deformation of the hot plate in the S3 area is 2. The preset judgment parameters P0=3 and P1=1 can be reset to zero when the displacement signal is negative (for the first time) (it can be understood as setting a compensation value corresponding to the maximum deformation amount for the displacement detection component), and the preset judgment parameters P0=3 and P1=1 are directly used as the final zero-pressure judgment parameters; when pressure is generated in the cooking cavity of the pot body, the pressure detected by the displacement signal output by the displacement detection component is greater than or equal to the pressure judgment parameter P0, that is, 3kpa, it is considered that pressure is detected, and there is pressure in the cooking cavity; when the pressure is released by exhaust, the pressure detected by the displacement signal output by the displacement detection component is less than or equal to the no-pressure judgment parameter P1, that is, 1kpa, it is considered that no pressure is detected, that is, there is no pressure in the cooking cavity.

[0066] In another embodiment, the zero pressure determination parameter of this embodiment includes a signal determination parameter, which can be determined by Figure 5 The method shown implements step S13 , and the method of this embodiment includes step S51 and step S52 .

[0067] Step S51: Acquire signal parameters of the displacement signal.

[0068] The signal parameter of the displacement signal may be information such as frequency or pulse width; correspondingly, the signal determination parameter may be a frequency determination parameter or a pulse width determination parameter.

[0069] Step S52: Determine whether there is pressure in the cooking cavity of the cooking mechanism based on the signal parameter and the signal determination parameter.

[0070] The signal determination parameter includes a pressure signal determination parameter and a no-pressure signal determination parameter. If the signal parameter is greater than or equal to the pressure signal determination parameter, it is determined that there is pressure in the cooking cavity. If the signal parameter is less than or equal to the no-pressure signal determination parameter, it is determined that there is no pressure in the cooking cavity.

[0071] Optionally, in order to reduce the impact of the zero-pressure judgment of the negative displacement signal when the displacement detection member is in the S3 area, the following method can be used for zero-pressure judgment. Specifically, in response to the signal parameter being less than zero, the position detection member is set to zero; in response to the signal parameter being greater than zero, the signal parameter is compared with the pressure signal judgment parameter, and the above method is used for zero-pressure judgment.

[0072] The present application further proposes a cooking device. The cooking device of this embodiment includes a cooking mechanism, a displacement detection component, and a control mechanism. The displacement detection component is arranged on the cooking mechanism or in the cooking cavity of the cooking mechanism, and is used to measure the displacement of the cooking mechanism; the control mechanism is connected to the displacement detection component and the cooking mechanism, and is used to control the operation of the cooking device using the above-mentioned calibration method.

[0073] Alternatively, as Figure 6 As shown, the cooking mechanism includes an inner pot 91, a pot cover 92, a heating mechanism, a displacement detection member 94, and an elastic diaphragm 95; the pot cover 92 is arranged on the cooking cavity of the inner pot 91; the heating mechanism is located at the bottom of the inner pot 91 and is used to heat the inner pot 91; the elastic diaphragm 95 is arranged below the heating mechanism and moves as the inner pot 91 moves up and down; the displacement detection member 94 is arranged corresponding to the elastic diaphragm 95 and is used to obtain the displacement of the elastic diaphragm 95.

[0074] The inner pot 91 can be displaced as the pressure in the cooking cavity changes, thereby driving the heating mechanism and then the elastic diaphragm 95 to be displaced. The displacement detection part 94 can obtain the displacement of the elastic diaphragm 95, and can obtain the pressure condition in the cooking cavity of the inner pot 91 based on the displacement.

[0075] In other embodiments, the displacement detection member may also be provided corresponding to the inner pot, the pot cover or the heating mechanism to obtain the displacement of the inner pot, the pot cover or the heating mechanism.

[0076] Optionally, the displacement detection member 94 may include a displacement sensor, such as a potentiometer displacement sensor, a capacitive displacement sensor, or a linear displacement sensor, etc. The control mechanism may include a control chip, such as an MCU, etc., or a non-integrated circuit with control and data processing functions.

[0077] In an application scenario, such as Figure 7 As shown, Figure 7This is a flow chart of an embodiment of the zero-pressure detection method for a cooking device of the present application. When the cooking device is in use, after the cooking device is powered on, the control mechanism obtains the displacement signal K output by the displacement detection member 94 in real time; the control mechanism calculates P according to a preset relationship, such as the formula P=a*K+b, where the formula is the relationship between the pressure P of the cooking mechanism and the displacement K output by the displacement detection member 94, a and b are constants, and a≠0 is satisfied; if P is less than 0, the control mechanism sets the displacement detection member 94 to zero and then obtains P, otherwise it directly obtains P; the control mechanism further determines the size between P and P0 (see the above implementation introduction), and if P is greater than or equal to P0, then The control mechanism determines that pressure is detected and that there is pressure in the pot, and then continues to obtain the displacement signal output by the displacement detection member 94 to repeat the zero-pressure determination process; if P is less than P0, the control mechanism determines the size between P and P1 (refer to the above implementation introduction); if P is less than or equal to P1, the control mechanism determines that no pressure is detected and there is no pressure in the pot, and then continues to obtain the displacement signal output by the displacement detection member 94 to repeat the zero-pressure determination process; if P is greater than P1, it directly continues to obtain the displacement signal output by the displacement detection member 94 to repeat the zero-pressure determination process.

[0078] This application further proposes a computer storage medium, such as Figure 8 As shown, Figure 8 It is a structural diagram of an embodiment of the computer storage medium of the present application.

[0079] The computer storage medium 90 of the embodiment of the present application stores program instructions 911 therein, and the program instructions 911 are executed to implement the control method of the water purifier.

[0080] The program instructions 911 may be formed into a program file and stored in the aforementioned storage medium in the form of a software product, so that an electronic device (which may be a personal computer, server, or network device, etc.) or a processor executes all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: a USB flash drive, a mobile hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, etc., which can store program code, or a terminal device such as a computer, server, mobile phone, or tablet.

[0081] The computer storage medium 90 in this embodiment can be, but is not limited to, a USB flash drive, an SD card, a PD optical drive, a mobile hard drive, a large-capacity floppy drive, a flash memory, a multimedia memory card, a server, and the like.

[0082] In one embodiment, a computer program product or computer program is provided, the computer program product or computer program including computer instructions stored in a computer storage medium. A processor of an electronic device reads the computer instructions from the computer storage medium and executes the computer instructions, causing the electronic device to perform the steps of each of the above method embodiments.

[0083] In addition, if the above functions are implemented as software functions and sold or used as independent products, they can be stored in a storage medium readable by a mobile terminal. That is, the present application also provides a storage device storing program data, which can be executed to implement the methods of the above embodiments. The storage device can be, for example, a USB flash drive, an optical disk, a server, etc. In other words, the present application can be embodied in the form of a software product, which includes a number of instructions for causing a smart terminal to execute all or part of the steps of the methods described in each embodiment.

[0084] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0085] The cooking device provided herein is equipped with a displacement detection element for detecting the displacement of a cooking mechanism. The present invention first obtains a displacement signal output by the displacement detection element based on the displacement of the cooking device, determines a zero-pressure determination parameter, and then determines whether there is pressure within the cooking cavity of the cooking mechanism based on the displacement signal and the zero-pressure determination parameter. Because the cooking mechanism produces different displacements under different pressures, the displacement detection element outputs different displacement signals based on the different displacements. Therefore, the displacement signal can reflect the pressure information of the cooking mechanism. The present invention determines whether there is pressure within the cooking cavity of the cooking mechanism based on the displacement signal and the zero-pressure determination parameter, eliminating the need for a zero-pressure float and related circuitry. This simplifies the zero-pressure detection structure of the cooking device and reduces costs.

[0086] Furthermore, the zero-pressure detection solution for cooking equipment provided in the present application utilizes the characteristic that the elastic diaphragm of the elastic pressure cooker will deform or the pot body will displace when there is pressure in the pot, and uses a displacement sensor to detect the displacement change, thereby determining whether there is pressure in the pot; zero-pressure detection is achieved without increasing costs or changing the product structure, greatly improving the user experience of the product and enhancing the product's competitiveness.

[0087] The above is only an implementation method of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A zero-pressure detection method for cooking equipment, characterized in that: The cooking device includes a cooking mechanism and a displacement detection member for measuring the displacement of the cooking mechanism, and the zero-pressure detection method includes: acquiring a displacement signal output by the displacement detecting member based on the displacement amount of the cooking mechanism; Determine zero pressure judgment parameters; It is determined whether there is pressure in the cooking cavity of the cooking mechanism based on the displacement signal and the zero-pressure determination parameter.

2. The zero-pressure detection method according to claim 1, characterized in that: The cooking mechanism includes a heating mechanism, and the determining of the zero-pressure judgment parameter includes: determining a positional relationship between the displacement detecting member and the heating mechanism; A zero pressure determination parameter is determined based on the positional relationship.

3. The zero-pressure detection method according to claim 2, characterized in that: The determining of the zero pressure determination parameter based on the position relationship includes: In response to the positional relationship being a first relationship, obtaining a maximum deformation amount of the heating mechanism at a position corresponding to the first relationship, and determining the zero-pressure determination parameter based on the maximum deformation amount; The first relationship ensures that the direction of the displacement signal generated by the displacement detecting member affected by the deformation of the heating mechanism is consistent with the direction of the displacement signal generated by the displacement detecting member affected by the pressure in the cooking cavity of the cooking mechanism.

4. The zero-pressure detection method according to claim 3, characterized in that: The determining the zero-pressure judgment parameter based on the maximum deformation amount includes: The sum of the maximum deformation amount and a preset judgment parameter is obtained as the zero-pressure judgment parameter.

5. The zero-voltage detection method according to claim 2, wherein: The determining of the zero pressure determination parameter based on the position relationship further includes: In response to the position relationship being the second relationship, using the preset determination parameter as the zero pressure determination parameter; Wherein, the second relationship ensures that the displacement signal generated by the displacement detection member is not affected by the deformation of the heating mechanism.

6. The zero-voltage detection method according to claim 2, wherein: The determining of the zero pressure determination parameter based on the position relationship further includes: In response to the position relationship being the third relationship, when the displacement signal is negative, the displacement detection member is reset to zero, and a preset determination parameter is used as a zero pressure determination parameter; The third relationship is such that the direction of the displacement signal generated by the displacement detecting member affected by the deformation of the heating mechanism is opposite to the direction of the displacement signal generated by the displacement detecting member affected by the pressure in the cooking cavity of the cooking mechanism.

7. The zero-voltage detection method according to claim 2, wherein: The determining of the zero pressure determination parameter based on the position relationship further includes: In response to the positional relationship being a third relationship, obtaining a maximum deformation amount of the heating mechanism at a position corresponding to the third relationship; Obtaining the difference between the maximum deformation amount and the preset judgment parameter as a zero pressure judgment parameter; The third relationship is such that the direction of the displacement signal generated by the displacement detecting member affected by the deformation of the heating mechanism is opposite to the direction of the displacement signal generated by the displacement detecting member affected by the pressure in the cooking cavity of the cooking mechanism.

8. The zero-voltage detection method according to any one of claims 1 to 7, characterized in that: The zero-pressure determination parameter includes: a pressure determination parameter; and determining whether there is pressure in the cooking cavity of the cooking mechanism based on the displacement signal and the zero-pressure determination parameter includes: acquiring a pressure value of the cooking mechanism based on the displacement signal; It is determined whether there is pressure in the cooking cavity of the cooking mechanism based on the pressure value and the pressure determination parameter.

9. The zero-voltage detection method according to claim 8, characterized in that: The pressure determination parameters include a pressure determination parameter with pressure and a pressure-free pressure determination parameter; and determining whether there is pressure in the cooking cavity of the cooking mechanism based on the pressure value and the pressure determination parameters includes: In response to the pressure value being greater than or equal to the pressure determination parameter, determining that there is pressure in the cooking cavity of the cooking mechanism; In response to the pressure value being less than or equal to the no-pressure determination parameter, it is determined that there is no pressure in the cooking cavity of the cooking mechanism.

10. The zero-pressure detection method according to claim 9, characterized in that: The determining whether there is pressure in the cooking cavity of the cooking mechanism based on the pressure value and the zero-pressure determination parameter further includes: In response to the pressure value being less than zero, setting the pressure value to zero; In response to the pressure value being greater than zero, the pressure value is compared with the pressurized pressure determination parameter.

11. The zero-pressure detection method according to any one of claims 1 to 7, characterized in that: The zero-pressure determination parameter includes: a signal determination parameter; and determining whether there is pressure in the cooking cavity of the cooking mechanism based on the displacement signal and the zero-pressure determination parameter includes: obtaining signal parameters of the displacement signal; It is determined whether there is pressure in the cooking cavity of the cooking mechanism based on the signal parameter and the signal determination parameter.

12. A cooking device, characterized in that: The cooking device comprises: cooking institutions; a displacement detection member, disposed on the cooking mechanism or in the cooking cavity of the cooking mechanism; A control mechanism is connected to the displacement detection member and the cooking mechanism, and is used to perform zero-pressure detection according to the zero-pressure detection method according to any one of claims 1 to 11.

13. A computer storage medium, characterized in that Program instructions are stored thereon, and the program instructions are executed by a processor to implement the zero-voltage detection method according to any one of claims 1 to 11.

Images