A refrigerator-based method and apparatus for easy-cut control of meat in a micro-frozen state

Abstract

The application discloses a kind of meat superchilling easy cutting control method and device based on refrigerator, method includes: control meat hardness detection module's film pressure sensor real-time sensing detection gelatinous substance swelling situation of analog meat state, and gelatinous substance swelling situation extrusion film pressure sensor, make the resistance change signal of film pressure sensor generation;Control the resistance change signal of film pressure sensor generation, through DAC digital-analog converter is converted into resistance change digital signal, obtain the hardness and frozen state grade of current meat;According to the resistance change digital signal of conversion, control the damper switch of refrigerator specified position, and control the start-stop of refrigeration of refrigerator specified position, to control the hardness and frozen state grade of current meat is in predetermined superchilling easy cutting state.The application reduces control cost;Directly carry out refrigeration control at the same time, the maintenance of meat superchilling easy cutting state is more stable, and preservation effect will be better.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of refrigerators, in particular to a meat micro-freezing easy cutting control method and device based on a refrigerator, an intelligent refrigerator and a storage medium. BACKGROUND

[0002] The ice-temperature fresh-keeping technology in the refrigerator industry is a technology different from cold storage or freezing, which maintains meat and other food in a micro-freezing easy cutting state through precise control of refrigeration, greatly improves the fresh-keeping period compared with cold storage, and improves the user's cutting experience compared with freezing.

[0003] However, the existing refrigerator adopts a technical solution of real-time sensing of the surface temperature of the food by a temperature sensor or recording the maintenance time of a certain temperature to "estimate" the freezing condition of the food, and then controlling the refrigeration, rather than directly controlling according to the state of the food itself, so it needs more stable ambient temperature and more accurate refrigeration, and the cost also increases.

[0004] Therefore, the prior art still needs to be improved and developed. SUMMARY

[0005] The technical problem to be solved by the present application is to provide a meat micro-freezing easy cutting control method and device based on a refrigerator, an intelligent refrigerator and a storage medium, aiming to solve the problem of the prior art refrigerator temperature control which is not directly controlled according to the state of the food itself, and the cost also increases. An intelligent method for identifying the hardness degree of meat in a variable temperature drawer is provided, which directly controls the refrigeration start and stop according to the hardness of the meat, and realizes the meat micro-freezing easy cutting.

[0006] The technical solution adopted by the present application to solve the problem is as follows:

[0007] A meat micro-freezing easy cutting control method based on a refrigerator, wherein the method comprises:

[0008] Controlling the meat hardness detection module pre-set at a specified position of the refrigerator to monitor the hardness and freezing state of the meat at the specified position of the refrigerator;

[0009] Controlling the thin film pressure sensor of the meat hardness detection module to real-time inductively detect the expansion of the gel material simulating the state of the meat filled in the meat hardness detection module, and extruding the gel material expansion to the thin film pressure sensor to make the thin film pressure sensor generate a resistance change signal;

[0010] Controlling the resistance change signal generated by the thin film pressure sensor to be converted into a resistance change digital signal by a DAC digital-analog converter;

[0011] According to the converted resistance change digital signal, and the pre-set hardness and frozen state grade of the meat corresponding to each resistance change digital signal range, the hardness and frozen state grade of the current meat are obtained.

[0012] According to the converted resistance change digital signal, the damper switch of the specified position of the refrigerator is controlled, and the start and stop of the refrigeration of the specified position of the refrigerator is controlled, so that the hardness and frozen state grade of the current meat are controlled to be in the pre-determined micro-frozen easy cutting state.

[0013] The meat micro-frozen easy cutting control method based on the refrigerator, wherein the step of monitoring the hardness and frozen state of the meat at the specified position of the refrigerator by the pre-set meat hardness detection module at the specified position of the refrigerator before the control includes:

[0014] A meat hardness detection module is pre-set in the temperature-changing drawer of the refrigerator compartment, and the meat hardness detection module includes:

[0015] a shell,

[0016] a thin film pressure sensor pre-buried in the lower surface of the shell,

[0017] a gel substance simulating the state of the meat filled in the shell and in contact with the thin film pressure sensor,

[0018] a DAC digital-analog converter connected with the thin film pressure sensor.

[0019] The meat micro-frozen easy cutting control method based on the refrigerator, wherein the step of monitoring the hardness and frozen state of the meat at the specified position of the refrigerator by the pre-set meat hardness detection module at the specified position of the refrigerator before the control includes:

[0020] The hardness and frozen state grade of the meat corresponding to each resistance change digital signal range are pre-set;

[0021] When the resistance value of the thin film pressure sensor becomes the first resistance value, the hardness and frozen state grade of the corresponding meat is set to the first hardness H1

[0022] When the resistance value of the thin film pressure sensor becomes the second resistance value, the hardness and frozen state grade of the corresponding meat is set to the second hardness H2.

[0023] The meat micro-frozen easy cutting control method based on the refrigerator, wherein the control of the hardness and frozen state grade of the current meat in the pre-determined micro-frozen easy cutting state according to the converted resistance change digital signal, the damper switch of the specified position of the refrigerator, and the start and stop of the refrigeration of the specified position of the refrigerator includes:

[0024] When the resistance value Rx range of the thin film pressure sensor is controlled to be R1≥R x≥ R2, the gel substance hardness is in a first hardness H1 to a second hardness H2, and the gel substance hardness is in a first hardness H1 to a second hardness H2.

[0025] The refrigerator-based meat micro-frozen easy cutting control method, wherein the control further comprises, before the step of monitoring the hardness and freezing state of the meat in the specified position of the refrigerator by the meat hardness detection module pre-set in the specified position of the refrigerator:

[0026] and setting the first resistance change rate predetermined value of the resistance change digital signal generated by the thin film pressure sensor when the gel substance hardness is in the first hardness H1 state of the micro-frozen easy cutting state,

[0027] setting the second resistance change rate predetermined value of the resistance change digital signal generated by the thin film pressure sensor when the gel substance hardness is in the second hardness H2 state of the micro-frozen easy cutting state.

[0028] The refrigerator-based meat micro-frozen easy cutting control method, wherein the step of controlling the air door switch of the specified position of the refrigerator and the start-stop of the refrigeration of the specified position of the refrigerator according to the converted resistance change digital signal to control the hardness and freezing state level of the current meat to be in the predetermined micro-frozen easy cutting state comprises:

[0029] controlling the air door switch of the variable-temperature drawer of the refrigerator and the start-stop of the refrigeration of the variable-temperature drawer of the refrigerator according to the size of the converted resistance change digital signal to control the hardness and freezing state level of the current meat to be in the predetermined micro-frozen easy cutting state;

[0030] setting the resistance change rate ROC = 100 × (R0-R x ) / R0.

[0031] The refrigerator-based meat micro-frozen easy cutting control method, wherein the step of controlling the air door switch of the specified position of the refrigerator and the start-stop of the refrigeration of the specified position of the refrigerator according to the converted resistance change digital signal to control the hardness and freezing state level of the current meat to be in the predetermined micro-frozen easy cutting state comprises:

[0032] reading the resistance change rate ROC value of the resistance change of the thin film pressure sensor, and when the resistance change rate ROC value ≤ the first resistance change rate predetermined value, controlling to open the electric air door at the back of the variable-temperature drawer;

[0033] when the resistance change rate ROC value ≥ the second resistance change rate predetermined value, controlling to close the electric air door at the back of the variable-temperature drawer;

[0034] when the resistance change rate ROC value is between the first resistance change rate predetermined value and the second resistance change rate predetermined value, maintaining the state control of the previous stage;

[0035] When the resistance change rate ROC value enters from the first resistance change rate predetermined value, the control remains open to the state of the electric damper of the refrigerator temperature-changing drawer, until the resistance change rate ROC value reaches the second resistance change rate predetermined value, the control closes the electric damper of the refrigerator temperature-changing drawer.

[0036] A refrigerator-based meat micro-freezing easy-cut control device, wherein the device comprises:

[0037] A first control module for controlling the meat hardness detection module pre-set at a designated position of the refrigerator to monitor the hardness and freezing state of the meat at the designated position of the refrigerator; the thin-film pressure sensor of the meat hardness detection module is configured to detect the expansion of the gelatinous substance simulating the state of the meat in real time, and the gelatinous substance is extruded to the thin-film pressure sensor, so that the thin-film pressure sensor generates a resistance change signal;

[0038] A conversion module for converting the resistance change signal generated by the thin-film pressure sensor into a resistance change digital signal through a DAC digital-to-analog converter;

[0039] A meat hardness processing module for obtaining the hardness and freezing state grade of the current meat according to the converted resistance change digital signal and the hardness and freezing state grade of the meat corresponding to each resistance change digital signal range pre-set;

[0040] A temperature adjustment control module for controlling the opening and closing of the damper at the designated position of the refrigerator and the start and stop of the refrigeration at the designated position of the refrigerator according to the converted resistance change digital signal, so as to control the hardness and freezing state grade of the current meat to be in a predetermined micro-freezing easy-cut state.

[0041] An intelligent refrigerator, comprising: a refrigerator body, a temperature-changing drawer arranged in the refrigerator body, a meat hardness detection module arranged in the temperature-changing drawer, an angle-adjustable electric damper assembly for controlling the start and stop of refrigeration in the temperature-changing drawer, and a refrigerator main control board.

[0042] The meat hardness detection module comprises:

[0043] a shell,

[0044] a thin-film pressure sensor pre-buried on the lower surface of the shell,

[0045] a gelatinous substance simulating the state of the meat filled in the shell and in contact with the thin-film pressure sensor,

[0046] a DAC digital-to-analog converter connected with the thin-film pressure sensor;

[0047] a main control board, and the DAC digital-to-analog converter is connected with the main control board.

[0048] a memory, the memory connected to the host board, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the execution of the one or more programs by the one or more processors comprising performing any of the methods.

[0049] A non-transitory computer readable storage medium, when instructions in the storage medium are executed by a processor of an electronic device, enable the electronic device to perform any of the methods.

[0050] The present application has the following advantages: the embodiment of the present application directly identifies the hardness of meat, controls refrigeration according to the hardness of meat, and maintains the meat in a micro-frozen easy-to-cut state. By manufacturing a thin film pressure sensor and a gel simulating meat, which are placed in a component in a structural member, after installation, a small piece of meat is equivalent to being additionally placed in the drawer, but the piece of meat can be identified as being frozen to a certain degree, and can be synchronized with the food in the drawer to become soft and hard. The refrigeration is controlled by the device, so that the application environment is not strict, the overall cost can be significantly reduced, and the control cost is reduced. Meanwhile, the refrigeration is directly controlled, the maintenance of the micro-frozen easy-to-cut state of the meat is more stable, and the preservation effect is better. BRIEF DESCRIPTION OF DRAWINGS

[0051] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0052] Figure 1 is a schematic diagram of the structure of the intelligent refrigerator of the embodiment of the present application.

[0053] Figure 2 is a schematic diagram of the installation structure of the meat hardness detection module of the intelligent refrigerator of the embodiment of the present application in the temperature-changing drawer.

[0054] Figure 3 is an exploded view of the meat hardness detection module of the intelligent refrigerator of the embodiment of the present application.

[0055] Figure 4 is a functional principle block diagram of the structure of the intelligent refrigerator of the embodiment of the present application.

[0056] Figure 5 is a flowchart of the method for controlling the micro-frozen easy-to-cut of meat based on a refrigerator provided by the embodiment of the present application.

[0057] Figure 6 is a principle block diagram of the device for controlling the micro-frozen easy-to-cut of meat based on a refrigerator provided by the embodiment of the present application.

[0058] Figure 7 This is a block diagram illustrating the internal structure of the smart refrigerator provided in an embodiment of the present invention. Detailed Implementation

[0059] To make the objectives, technical solutions, and advantages of this invention clearer and more explicit, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0060] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0061] Existing refrigerator technologies either use temperature sensors to sense the surface temperature of food in real time or record the duration of a certain temperature to "predict" the freezing status of the food and then control the cooling, rather than directly controlling the cooling based on the state of the food itself. Therefore, they require more stable ambient temperature and more precise cooling, which increases the cost.

[0062] To address the problems of existing technologies, this invention provides a refrigerator-based method for controlling the micro-freezing and easy cutting of meat. In an embodiment of the invention, a meat hardness detection module is pre-installed inside the refrigerator to monitor the hardness and freezing state of the meat inside the variable-temperature drawer. The meat hardness detection module has a thin-film pressure sensor embedded inside its outer shell, and a gel material simulating the state of meat is filled above the thin-film pressure sensor. During the freezing process, the gel material expands, compressing the thin-film pressure sensor and causing its resistance value to change. The change in resistance signal is converted into a digital signal recognizable by the refrigerator's main control board by a DAC digital-to-analog converter. The refrigerator's main control board controls the opening and closing of the variable-temperature drawer's damper based on the magnitude of the digital signal, thus controlling the on / off operation of the variable-temperature drawer's cooling.

[0063] Exemplary method

[0064] like Figure 1 and Figure 2 As shown, this embodiment provides an intelligent refrigerator, including: a refrigerator body 1, a variable temperature drawer 2 disposed in the refrigerator body 1, a meat hardness detection module 3 disposed in the variable temperature drawer 2, and an angle-adjustable electric air door assembly 4 for controlling the cooling on and off inside the variable temperature drawer, and a main control board 5.

[0065] like Figure 4 As shown, the meat firmness detection module 3 includes:

[0066] The shell, wherein the shell can include a lower shell 31 and an upper shell 32,

[0067] A thin film pressure sensor 33 embedded in the lower surface of the shell,

[0068] A gel material 34 filled in the shell and in contact with the thin film pressure sensor 33, simulating the state of meat,

[0069] A DAC digital-to-analog converter 35 connected to the thin film pressure sensor 33;

[0070] A main control board 5, the DAC digital-to-analog converter is connected to the main control board 5;

[0071] A memory connected to the main control board 5.

[0072] The intelligent refrigerator of the embodiment of the present application sets a meat hardness detection module in the temperature-variable drawer, and the thin film pressure sensor is preferably a resistance type thin film pressure sensor. Figure 2 and Figure 3 As shown, the meat hardness detection module of the embodiment of the present application includes: a (resistance type) thin film pressure sensor 33, a gel material 34 simulating the material of meat, a shell, and a DAC digital-to-analog converter connected to the (resistance type) thin film pressure sensor 33 and the main control board 5 for communication; the gel material of the embodiment of the present application is a material simulating the material of meat. The gel material will produce an expansion pressure in the freezing process, so that the resistance type thin film pressure sensor attached to the inside of the shell is extruded by the gel material to change the resistance signal. The degree of change of the resistance signal corresponds to the freezing degree of the gel material. Then, the resistance signal is converted into a digital signal through data processing by the DAC digital-to-analog converter, which can be fed back to the main control board of the refrigerator to identify the freezing degree of the gel material.

[0073] Then, the main control board 5 of the refrigerator controls the opening and closing of the electric air door 61 according to the signal fed back by the meat hardness detection module 3. When the switch is opened, the opening and closing of the electric air door 61 is driven by the driving motor 62. In the embodiment of the present application, an angle-adjustable electric air door assembly is provided, which includes a driving motor, an air door connected to the driving motor, and the driving motor receives the control instruction of the main control board 5 to control the start and stop of refrigeration in the temperature-variable drawer. That is, whether the refrigeration in the temperature-variable drawer is controlled, so that the hardness of the meat stored in the temperature-variable drawer is maintained in a state similar to the gel material in the meat hardness detection module, that is, a slightly frozen and easy-to-cut state.

[0074] The intelligent refrigerator of the embodiment of the present application can recognize the resistance generated by the initial hardness state H0 of the gelatinous substance 34 simulating the meat material quality extruding the shell through the resistive film pressure sensor 33 of the meat hardness detection module 3, and record it as the initial state resistance R0; when the first hardness H1 of the gelatinous substance corresponding to the first frozen state reached by continuing to control freezing, the gelatinous substance extrudes the shell, the resistance decreases, and the first state resistance generated is recorded as R1; the second state resistance generated by the second hardness H2 of the gelatinous substance corresponding to the second frozen state extruding the shell is recorded as R2.

[0075] In the embodiment of the present application, the first hardness H1 and the second hardness H2 are both in the slightly frozen easy-to-cut state, and the DAC digital-to-analog converter can recognize the resistance change rate ROC, which is the ratio of the difference AR between the initial state resistance R0 of the resistive film pressure sensor and the current R x , and the resistance R0, such as the resistance change rate ROC = 100 x (R0-R x ) / R0; when R x ≥ R2, the refrigerator main control board controls the variable temperature room electric damper to be in an open state according to the ROC value at this time, performs refrigeration on the variable temperature room, and cools and freezes the meat in the variable temperature room; when R x ≤ R1, the variable temperature room electric damper is closed; when R1 > R x > R2, the refrigerator main control board controls the variable temperature room electric damper to be in the previous state according to the ROC value at this time. Through the above method, the hardness of the gelatinous substance simulating the meat material quality is always in the slightly frozen easy-to-cut state between the first hardness H1 and the second hardness H2.

[0076] The gelatinous substance simulating the meat material quality in the embodiment of the present application basically maintains the same hardness state as the meat stored in the variable temperature drawer during the freezing process, and the material can be the material used in the refrigerator freezing load test package.

[0077] Of course, in the embodiment of the present application, the temperature adjustment in the variable temperature drawer of the refrigerator is achieved by controlling the opening and closing of the electric damper controlled by the refrigerator main control board to control the refrigeration air volume entering the variable temperature drawer to control the temperature adjustment in the variable temperature drawer. Specifically, as shown in Figure 4 , the main control board 5 of the refrigerator can also be connected with the electronic transmission part 63 of the sealing degree control assembly, the drawer switch detection device 64, the humidity sensor 65, and the food material state display module 66, respectively. The main control board 5 can recognize the drawer switch state by reading the signal of the drawer switch detection device 64, recognize the relative humidity state in the drawer by reading the signal of the humidity sensor 65, send instructions to the electronic transmission part 63 to adjust the sealing degree of the drawer, and send instructions to the food material state display module 66 to display the food material storage state in the drawer.

[0078] As can be seen from the above, the embodiment of the present application monitors the hardness and freezing state of the meat in the variable-temperature drawer of the refrigerator through a meat hardness detection module in the variable-temperature drawer of the refrigerator fresh-keeping chamber, the meat hardness detection module pre-buries a film pressure sensor in the inside of the shell, the film pressure sensor is filled with gelatinous substance simulating the state of the meat above, the gelatinous substance expands during the freezing process, extrudes the film pressure sensor to change the resistance value of the film pressure sensor, the resistance signal change is converted into a digital signal recognizable by the main control board of the refrigerator by a DAC digital-analog converter, and the main control board of the refrigerator controls the air door switch of the variable-temperature drawer according to the size of the digital signal to control the start and stop of the refrigeration of the variable-temperature drawer. In this way, the meat hardness degree in the variable-temperature drawer can be directly controlled and intelligently recognized, the meat in the variable-temperature drawer of the refrigerator fresh-keeping chamber is directly controlled to be in a state of easy cutting according to the meat hardness, the meat is micro-frozen and easy to cut, the application environment of the present application is not strict, the overall cost can be significantly reduced, the refrigeration control is directly performed, the maintenance of the micro-frozen and easy-to-cut state of the meat is more stable, the preservation effect is better, and convenience is provided for the use of users.

[0079] Based on the above embodiment, as Figure 5 indicated, the embodiment of the present application also provides a refrigerator-based meat micro-frozen and easy-to-cut control method, which can be applied to an intelligent refrigerator. In the embodiment of the present application, the method comprises the following steps:

[0080] Step S100, control the meat hardness detection module pre-set at a specified position of the refrigerator to monitor the hardness and freezing state of the meat at the specified position of the refrigerator; control the film pressure sensor of the meat hardness detection module to detect the expansion of the gelatinous substance simulating the state of the meat filled in the meat hardness detection module in real time, and extrude the film pressure sensor with the expansion of the gelatinous substance to make the film pressure sensor generate a resistance change signal;

[0081] In the specific implementation of the embodiment of the present application, as Figure 1 and Figure 2 indicated, a meat hardness detection module 3 needs to be pre-set in the variable-temperature drawer of the refrigerator fresh-keeping chamber 20, the meat hardness detection module 3 comprises:

[0082] a shell, wherein the shell can comprise a lower shell 31 and an upper shell 32,

[0083] a film pressure sensor 33 pre-buried in the lower surface of the shell,

[0084] gelatinous substance 34 simulating the state of the meat filled in the shell and in contact with the film pressure sensor 33,

[0085] a DAC digital-analog converter 35 connected with the film pressure sensor 33;

[0086] The main control board 5 is connected with a DAC digital-analog converter;

[0087] A memory is connected with the main control board 5.

[0088] In the embodiment, the meat hardness detection module 3 is arranged in the temperature-variable drawer of the refrigerator, and the hardness and freezing state of the meat are detected.

[0089] Specifically, the hardness and freezing state of the meat in the temperature-variable drawer are monitored by the meat hardness detection module 3 arranged in the temperature-variable drawer, and the expansion of the gelatinous substance 34 filled in the meat hardness detection module is detected by the thin-film pressure sensor 33 of the meat hardness detection module 3, and the expansion of the gelatinous substance 34 is pressed against the thin-film pressure sensor, so that the resistance change signal of the thin-film pressure sensor is generated.

[0090] In step S200, the resistance change signal of the thin-film pressure sensor is converted into a resistance change digital signal by the DAC digital-analog converter.

[0091] In this step, the resistance change signal of the thin-film pressure sensor is converted into a resistance change digital signal by the DAC digital-analog converter. In the embodiment, the resistance signal of the thin-film pressure sensor in the meat hardness detection module is converted into a digital signal by the DAC digital-analog converter, which represents the hardness of the meat and communicates with the main control board of the refrigerator in real time.

[0092] In step S300, the hardness and freezing state of the meat are obtained according to the converted resistance change digital signal and the hardness and freezing state of the meat corresponding to each resistance change digital signal range.

[0093] In the embodiment, the hardness and freezing state of the meat corresponding to each resistance change digital signal range are set in advance. Specifically, when the resistance value of the thin-film pressure sensor becomes a first resistance value, for example, R1=1.5MΩ, the hardness and freezing state of the meat corresponding to the first resistance value are set as a first hardness H1, and the first hardness H1 corresponds to the initial freezing degree of the meat in the temperature-variable drawer. When the resistance value of the thin-film pressure sensor becomes a second resistance value, for example, R2=1.0MΩ, the hardness and freezing state of the meat corresponding to the second resistance value are set as a second hardness H2, and the second hardness H2 corresponds to a slightly hard but easy-to-cut state.

[0094] In the embodiment, when the resistance value Rx of the thin-film pressure sensor is in the range of R1≥Rx≥R2, the hardness of the gelatinous substance is in the range of the first hardness H1 to the second hardness H2, and the gelatinous substance is in a slightly frozen and easy-to-cut state. x ≥R2, the hardness of the gelatinous substance is in the range of the first hardness H1 to the second hardness H2, and the gelatinous substance is in a slightly frozen and easy-to-cut state.

[0095] In the embodiment of the present application, for example, the meat hardness detection module 3 is installed on the top panel of the variable-temperature drawer of the refrigerator, and the resistance signal of the thin-film pressure sensor 33 is generated by the resistance of the shell extruded by the initial hardness state H0 of the gel substance 34 simulating the meat material, which is recorded as the initial state resistance R0, such as R0=2.5 MΩ.

[0096] With the start of refrigeration of the variable-temperature drawer, the initial hardness state H0 of the gel substance changes to the first hardness H1 state, at which the freezing degree of the meat inside the variable-temperature drawer is initially higher than the initial state, and the user can cut well, at which the resistance value of the thin-film pressure sensor changes to R1=1.5 MΩ, and continues to refrigerate, the hardness of the gel substance changes to the second hardness H2, at which it is slightly hard but still easy to cut, at which the resistance value of the thin-film pressure sensor changes to R2=1.0 MΩ; the hardness of the gel substance between H1 and H2 belongs to the easy-to-cut state of slight freezing, and the target is to control the resistance value R of the thin-film pressure sensor to be in the range of R1≥R≥R2. x x The hardness of the gel substance between H1 and H2 belongs to the easy-to-cut state of slight freezing.

[0097] In a further embodiment, the main control board of the refrigerator cannot directly read the resistance signal, so in order to more conveniently read the resistance signal of the thin-film pressure sensor, in the embodiment of the present application, the resistance signal is processed by a DAC digital-analog converter, the resistance change rate ROC=100×(R0-R x ) / R0 is set, and when the hardness of the gel substance is in the easy-to-cut state of slight freezing at the first hardness H1 state, the generated resistance change digital signal of the thin-film pressure sensor is a first resistance change rate predetermined value, for example, ROC1 is 40.

[0098] When the hardness of the gel substance is in the easy-to-cut state of slight freezing at the second hardness H2 state, the generated resistance change digital signal of the thin-film pressure sensor is a second resistance change rate predetermined value ROC2, which is 60.

[0099] That is, the first hardness H1 corresponds to ROC1 which is 40, and the second hardness H2 corresponds to ROC2 which is 60.

[0100] Step S400, according to the converted resistance change digital signal, control the damper switch of the specified position of the refrigerator, and control the start and stop of the refrigeration of the specified position of the refrigerator, to control the hardness and freezing state level of the current meat to be in the predetermined easy-to-cut state of slight freezing.

[0101] In this step, according to the size of the converted resistance change digital signal, the damper switch of the variable-temperature drawer of the refrigerator is controlled, and the start and stop of the refrigeration of the variable-temperature drawer of the refrigerator is controlled, to control the hardness and freezing state level of the current meat to be in the predetermined easy-to-cut state of slight freezing.​

[0102] Specifically, when reading the resistance change rate ROC value of the thin film pressure sensor resistance change, when the resistance change rate ROC value ≤ the first resistance change rate predetermined value, for example, less than or equal to 40, at this time the meat stored in the temperature-changing drawer has not reached the first hardness H 1， To prepare for refrigeration, control the opening of the electric air door at the back of the temperature-changing drawer to continuously draw cold air for air intake to control the meat placed in the temperature-changing drawer to reach the first hardness H 1。

[0103] When the resistance change rate ROC value ≥ the second resistance change rate predetermined value, for example, greater than 60, then at this time the hardness state of the meat placed in the temperature-changing drawer has exceeded the second hardness H2, at this time the electric air door at the back of the temperature-changing drawer needs to be controlled to be closed; this is more energy-saving and can also make the meat placed in the temperature-changing drawer return to the easy-to-cut state.

[0104] When the resistance change rate ROC value is between the first resistance change rate predetermined value and the second resistance change rate predetermined value, maintain the control of the previous stage state; that is, if ROC is between 40 and 60, maintain the control of the previous stage state, that is, if the previous stage is the air opening state, continue to control the air door to be in the opening state; and if the previous stage is the air door in the closed state, continue to make the air door in the closed state. In this way, the meat placed in the temperature-changing drawer can be kept in the easy-to-cut state, and direct refrigeration control can be performed, so that the maintenance of the easy-to-cut state of the meat is more stable, and the preservation effect is better.

[0105] When the resistance change rate ROC value enters from the first resistance change rate predetermined value, the control still maintains the state of the electric air door of the temperature-changing drawer of the refrigerator being opened, and until the resistance change rate ROC value reaches the second resistance change rate predetermined value, the control closes the electric air door of the temperature-changing drawer of the refrigerator. That is, if the resistance change rate ROC value enters from 40 to 41, the electric air door is still maintained in the opened state until the ROC reaches 60 and the electric air door is closed. In this way, the meat placed in the temperature-changing drawer can be kept in the easy-to-cut state, and direct refrigeration control can be performed, so that the maintenance of the easy-to-cut state of the meat is more stable, and the preservation effect is better.

[0106] It can be seen that the present application proposes a scheme for maintaining the meat in the easy-to-cut state by directly identifying the hardness of the meat and controlling the refrigeration according to the hardness of the meat. By manufacturing a component in which a thin film pressure sensor and a gel simulating meat are placed in a structural member, after installation, it is equivalent to placing a small piece of meat in the drawer, but this piece of meat can be identified for its freezing degree, and can be synchronized with the food in the drawer to become soft and hard. By controlling the refrigeration through the device, it is not necessary to have a harsh application environment, and the overall cost can be significantly reduced. At the same time, direct refrigeration control can be performed, so that the maintenance of the easy-to-cut state of the meat is more stable, and the preservation effect is better.

[0107] Exemplary device

[0108] As Figure 6 indicated in the above embodiments, the present application provides a refrigerator-based meat micro-freezing easy cutting control device, which comprises:

[0109] a first control module 510, configured to control a meat hardness detection module pre-set at a designated position of the refrigerator to monitor the hardness and freezing state of the meat at the designated position of the refrigerator; control a thin film pressure sensor of the meat hardness detection module to detect in real time the expansion of a gel material simulating the state of the meat filled in the meat hardness detection module, and extrude the gel material expansion to the thin film pressure sensor to make the thin film pressure sensor generate a resistance change signal;

[0110] a conversion module 520, configured to control the resistance change signal generated by the thin film pressure sensor to be converted into a resistance change digital signal by a DAC digital-analog converter;

[0111] a meat hardness processing module 530, configured to obtain the hardness and freezing state grade of the current meat according to the converted resistance change digital signal and the hardness and freezing state grade of the meat corresponding to each resistance change digital signal range pre-set;

[0112] a temperature adjustment control module 540, configured to control the air door switch at the designated position of the refrigerator and the start-stop of the refrigeration at the designated position of the refrigerator according to the converted resistance change digital signal, so as to control the hardness and freezing state grade of the current meat to be in a predetermined micro-freezing easy cutting state.

[0113] Based on the above embodiments, the present application further provides an intelligent refrigerator, and a principle block diagram thereof can be as shown in Figure 7 The intelligent refrigerator comprises a processor, a memory, a network interface, a display screen, and a temperature sensor connected through a system bus. The processor of the intelligent refrigerator is configured to provide computing and control capabilities. The memory of the intelligent refrigerator comprises a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operating system and the computer program in the non-volatile storage medium to run. The network interface of the intelligent refrigerator is configured to communicate with an external terminal through a network connection. The computer program is executed by the processor to implement a refrigerator-based meat micro-freezing easy cutting control method. The display screen of the intelligent refrigerator can be a liquid crystal display screen or an electronic ink display screen. The meat hardness detection module of the intelligent refrigerator is pre-set in the intelligent refrigerator and is configured to detect the hardness of the meat at a designated position of the refrigerator.

[0114] Those skilled in the art can understand, Figure 7The principle block diagram shown in the figure is only a block diagram of part of the structure related to the present application, and does not constitute a limitation on the intelligent refrigerator to which the present application is applied. A specific intelligent refrigerator can include more or fewer components than those shown in the figure, or combine certain components, or have a different component arrangement.

[0115] In one embodiment, an intelligent refrigerator is provided, including a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by one or more processors, the one or more programs including instructions for:

[0116] controlling a meat hardness detection module pre-set at a designated position of the refrigerator to monitor the hardness and freezing state of the meat at the designated position of the refrigerator;

[0117] controlling a thin film pressure sensor of the meat hardness detection module to detect in real time the expansion of a gelatinous substance simulating the state of the meat filled in the meat hardness detection module, and extruding the gelatinous substance to the thin film pressure sensor, so that the thin film pressure sensor generates a resistance change signal;

[0118] controlling the resistance change signal generated by the thin film pressure sensor to be converted into a resistance change digital signal by a DAC digital-to-analog converter;

[0119] obtaining the hardness and freezing state grade of the current meat according to the converted resistance change digital signal and the hardness and freezing state grade of the meat corresponding to each resistance change digital signal range pre-set;

[0120] controlling the damper switch at the designated position of the refrigerator and the start and stop of the refrigeration at the designated position of the refrigerator according to the converted resistance change digital signal, so as to control the hardness and freezing state grade of the current meat to be in a predetermined micro-frozen easy-to-cut state.

[0121] The step of controlling the meat hardness detection module pre-set at the designated position of the refrigerator to monitor the hardness and freezing state of the meat at the designated position of the refrigerator includes:

[0122] pre-setting a meat hardness detection module in a temperature-variable drawer of a refrigerator fresh-keeping compartment, the meat hardness detection module 3 including:

[0123] a shell,

[0124] a thin film pressure sensor pre-buried in the lower surface of the shell,

[0125] a gelatinous substance simulating the state of the meat filled in the shell and in contact with the thin film pressure sensor,

[0126] A DAC (Digital to Analog Converter) connected to the thin film pressure sensor.

[0127] The method further comprises the following steps before the step of monitoring the hardness and freezing state of the meat in the designated position of the refrigerator by the meat hardness detection module prearranged in the designated position of the refrigerator:

[0128] The hardness and freezing state of the meat corresponding to each resistance change digital signal range are prearranged.

[0129] When the resistance value of the thin film pressure sensor becomes the first resistance value, the hardness and freezing state of the meat corresponding to the resistance value are set as the first hardness H1.

[0130] When the resistance value of the thin film pressure sensor becomes the second resistance value, the hardness and freezing state of the meat corresponding to the resistance value are set as the second hardness H2.

[0131] The method further comprises the following steps before the step of monitoring the hardness and freezing state of the meat in the designated position of the refrigerator by the meat hardness detection module prearranged in the designated position of the refrigerator:

[0132] When the resistance value Rx of the thin film pressure sensor is in the range of R1≥R x When the resistance value Rx of the thin film pressure sensor is in the range of R1≥R

[0133] The method further comprises the following steps before the step of monitoring the hardness and freezing state of the meat in the designated position of the refrigerator by the meat hardness detection module prearranged in the designated position of the refrigerator:

[0134] When the hardness of the gelatinous substance is in the first hardness H1 state of the easy-to-cut state of the meat, the resistance change digital signal generated by the thin film pressure sensor is set as the first resistance change rate preset value.

[0135] When the hardness of the gelatinous substance is in the second hardness H2 state of the easy-to-cut state of the meat, the resistance change digital signal generated by the thin film pressure sensor is set as the second resistance change rate preset value.

[0136] The method further comprises the following steps before the step of monitoring the hardness and freezing state of the meat in the designated position of the refrigerator by the meat hardness detection module prearranged in the designated position of the refrigerator:

[0137] The method further comprises the following steps before the step of monitoring the hardness and freezing state of the meat in the designated position of the refrigerator by the meat hardness detection module prearranged in the designated position of the refrigerator:

[0138] The resistance change rate ROC = 100 x (R0-R x ) / R0 is set.

[0139] The step of controlling the current meat hardness and freezing state level to be in the predetermined micro-frozen easy-to-cut state according to the converted resistance change digital signal, controlling the damper switch at the specified position of the refrigerator, and controlling the start and stop of refrigeration at the specified position of the refrigerator includes:

[0140] The resistance change rate ROC value of the resistance change of the thin film pressure sensor is read, and when the resistance change rate ROC value is less than or equal to a first resistance change rate predetermined value, the back electric damper of the variable temperature drawer is controlled to be opened.

[0141] When the resistance change rate ROC value is greater than or equal to a second resistance change rate predetermined value, the back electric damper of the variable temperature drawer is controlled to be closed.

[0142] When the resistance change rate ROC value is between the first resistance change rate predetermined value and the second resistance change rate predetermined value, the state control of the previous stage is maintained.

[0143] When the resistance change rate ROC value enters from the first resistance change rate predetermined value, the state of the electric damper of the refrigerator variable temperature drawer is still controlled to be opened until the resistance change rate ROC value reaches the second resistance change rate predetermined value, and then the electric damper of the refrigerator variable temperature drawer is controlled to be closed.

[0144] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer readable storage medium, and when the computer program is executed, the processes of the above-mentioned embodiments of the methods can be included. Any reference to memory, storage, database or other medium used in the embodiments provided by the present application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration but not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0145] In summary, the application discloses a meat micro-freezing easy cutting control method and device based on a refrigerator, an intelligent refrigerator and a storage medium. The application directly identifies the hardness of meat, controls refrigeration according to the hardness of meat, and maintains the meat in a micro-freezing easy cutting scheme. A thin film pressure sensor and a gel simulating meat are placed in a component in a structure. After installation, a small piece of meat is equivalent to being placed in the drawer. However, the degree of freezing of the meat can be identified, and the food in the drawer can be synchronized to become soft and hard. The refrigeration is controlled through the device, so that the application environment is not strict, the overall cost can be significantly reduced, and the control cost is reduced. At the same time, the refrigeration is directly controlled, the maintenance of the meat micro-freezing easy cutting state is more stable, and the preservation effect is better.

[0146] It should be understood that the application is not limited to the above examples, and those skilled in the art can make improvements or changes according to the above description, and all these improvements and changes should belong to the protection scope of the claims of the application.

Claims

1. A refrigerator-based method for controlling the micro-freezing and easy cutting of meat, characterized in that, The method includes: The control system monitors the hardness and freezing status of meat in a designated location within the refrigerator via a meat hardness detection module that is pre-set in that location. The thin-film pressure sensor of the meat hardness detection module is controlled to sense and detect the expansion of the gel material that simulates the state of meat filled in the meat hardness detection module in real time, and the expansion of the gel material squeezes the thin-film pressure sensor, causing the thin-film pressure sensor to generate a resistance change signal. The control system converts the resistance change signal generated by the thin-film pressure sensor into a digital resistance change signal via a DAC digital-to-analog converter. Based on the converted digital signal of resistance change, and the hardness and freezing status level of the meat corresponding to each preset range of digital signal of resistance change, the current hardness and freezing status level of the meat are obtained. Based on the converted digital signal of resistance change, the system controls the opening and closing of the air damper at a designated location in the refrigerator, as well as the on / off of the cooling at a designated location in the refrigerator, so as to control the current hardness and freezing level of the meat to a predetermined slightly frozen and easy-to-cut state.

2. The method for controlling the micro-freezing and easy cutting of meat based on a refrigerator according to claim 1, characterized in that, The control process, which monitors the hardness and freezing status of meat at a designated location in the refrigerator via a meat hardness detection module pre-installed at that location, includes the following steps prior to this: A meat firmness detection module is pre-installed in the variable temperature drawer of the refrigerator compartment. The meat firmness detection module includes: shell, A thin-film pressure sensor is embedded in the lower surface of the housing. A gel-like substance, simulating the state of meat, is filled inside the casing and connected in contact with a thin-film pressure sensor. A DAC (Digital-to-Analog Converter) connected to a thin-film pressure sensor.

3. The refrigerator-based method for controlling the micro-freezing and easy cutting of meat according to claim 1, characterized in that, The control process, which monitors the hardness and freezing status of meat at a designated location in the refrigerator via a meat hardness detection module pre-installed at that location, includes the following steps prior to this: The hardness and freezing level of the meat are pre-set for each range of digital signals with varying resistance. When the resistance value of the diaphragm pressure sensor changes to the first resistance value, the corresponding meat hardness and freezing state level is set to the first hardness H1. When the resistance value of the membrane pressure sensor changes to the second resistance value, the corresponding meat hardness and freezing state level is set to the second hardness H2.

4. The refrigerator-based method for controlling the micro-freezing and easy cutting of meat according to claim 3, characterized in that, The process of controlling the air damper switch at a designated location in the refrigerator and controlling the cooling on / off at a designated location in the refrigerator based on the converted digital signal of resistance change, so as to control the current meat hardness and freezing level to be in a predetermined slightly frozen and easy-to-cut state, includes: When the resistance value Rx of the control diaphragm pressure sensor is in the range of R1 ≥ R x When R2 is greater than or equal to 2, the hardness of the gel material is between the first hardness H1 and the second hardness H2, which is in a slightly frozen and easily cut state.

5. The refrigerator-based method for controlling the micro-freezing and easy cutting of meat according to claim 3, characterized in that, The control process, which monitors the hardness and freezing status of meat at a designated location in the refrigerator via a meat hardness detection module pre-installed at that location, also includes the following steps before the control process: Furthermore, when the gel material reaches a slightly frozen and easily cut state with a hardness of first hardness H1, the digital signal of the resistance change generated by the corresponding thin-film pressure sensor is set to a predetermined value for the first resistance change rate. When the hardness of the gel material is in the slightly frozen and easily cut state of the second hardness H2 state, the digital signal of the resistance change generated by the corresponding thin film pressure sensor is set to the predetermined value of the second resistance change rate.

6. The refrigerator-based method for controlling the micro-freezing and easy cutting of meat according to claim 5, characterized in that, The steps of controlling the air damper switch at a designated location in the refrigerator and controlling the cooling on / off at a designated location in the refrigerator based on the converted digital signal of resistance change, so as to control the current meat hardness and freezing level to be in a predetermined slightly frozen and easy-to-cut state, include: Based on the magnitude of the converted resistance change digital signal, the opening and closing of the air damper of the refrigerator's variable temperature drawer, as well as the on / off of the refrigerator's variable temperature drawer's cooling, are controlled to keep the current meat hardness and freezing level in a predetermined slightly frozen and easy-to-cut state. Set the resistance change rate ROC = 100 × (R0 - R) x ) / R0.

7. The refrigerator-based method for controlling the micro-freezing and easy cutting of meat according to claim 6, characterized in that, The steps of controlling the air damper switch at a designated location in the refrigerator and controlling the cooling on / off at a designated location in the refrigerator based on the converted digital signal of resistance change, so as to control the current meat hardness and freezing level to be in a predetermined slightly frozen and easy-to-cut state, include: Read the resistance change rate (ROC) value of the thin-film pressure sensor. When the ROC value is less than or equal to the first predetermined resistance change rate value, control the opening of the electric air door at the back of the temperature-controlled drawer. When the resistance change rate ROC value is greater than or equal to the second resistance change rate preset value, the electric damper at the back of the variable temperature drawer is controlled to close. When the resistance change rate ROC value is between the first and second predetermined resistance change rate values, the previous stage state control is maintained. When the resistance change rate ROC value enters from the first predetermined resistance change rate value, the control keeps the electric damper of the refrigerator temperature-controlled drawer open until the resistance change rate ROC value reaches the second predetermined resistance change rate value, at which point the control closes the electric damper of the refrigerator temperature-controlled drawer.

8. A refrigerator-based meat micro-freezing and easy-to-cut control device, characterized in that, The device includes: The first control module is used to control the meat hardness detection module, which is pre-set in a designated location in the refrigerator, to monitor the hardness and freezing status of meat in a designated location in the refrigerator; and to control the thin-film pressure sensor of the meat hardness detection module to sense and detect the expansion of the gel material simulating the state of meat filled in the meat hardness detection module in real time, and to squeeze the thin-film pressure sensor by the expansion of the gel material, so that the thin-film pressure sensor generates a resistance change signal. The conversion module is used to control the conversion of the resistance change signal generated by the thin-film pressure sensor into a digital resistance change signal through a DAC digital-to-analog converter. The meat hardness processing module is used to obtain the current meat hardness and freezing status level based on the converted resistance change digital signal and the meat hardness and freezing status level corresponding to each preset range of resistance change digital signal. The temperature regulation control module is used to control the opening and closing of the air damper at a designated location in the refrigerator, and to control the on / off of the cooling at a designated location in the refrigerator, based on the converted digital signal of resistance change, so as to control the current hardness and freezing level of the meat to a predetermined slightly frozen and easy-to-cut state.

9. A smart refrigerator, characterized in that, include: The refrigerator body, the variable temperature drawer inside the refrigerator body, the meat hardness detection module inside the variable temperature drawer, the adjustable electric air door assembly that controls the cooling on and off inside the variable temperature drawer, and the refrigerator main control board. The meat firmness detection module includes: shell, A thin-film pressure sensor is embedded in the lower surface of the housing. A gel-like substance, simulating the state of meat, is filled inside the casing and connected in contact with a thin-film pressure sensor. A DAC (Digital-to-Analog Converter) connected to a thin-film pressure sensor; The main control board and the DAC digital-to-analog converter are connected to the main control board; The memory is connected to the main control board, and one or more programs are stored in the memory and configured to be executed by one or more processors. The one or more programs include methods for performing the method as described in any one of claims 1-7.

10. A non-transitory computer-readable storage medium, characterized in that, When the instructions in the storage medium are executed by the processor of the electronic device, the electronic device is able to perform the method as described in any one of claims 1-7.

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