Food material thawing method and device, refrigeration equipment and storage medium

Abstract

The application discloses a food material thawing method and device, a refrigeration equipment and a storage medium. The method is applied to the refrigeration equipment with a radio frequency thawing device. The method comprises the following steps: obtaining target food material information of a food material to be thawed through a sensor arranged in the refrigeration equipment, wherein the target food material information comprises a food material type, a food material quality and an initial temperature of the food material to be thawed; determining radio frequency thawing parameters corresponding to the target food material based on the target food material information; and controlling the radio frequency thawing device to operate at the radio frequency thawing parameters, so as to thaw the food material to be thawed. The radio frequency thawing parameters determined by the scheme can be matched with the actual state of the food material to be thawed, so that the thawing effect is effectively improved.

Description

Technical Field

[0001] This invention belongs to the field of home appliances, and particularly relates to a method, apparatus, refrigeration equipment and storage medium for defrosting food. Background Technology

[0002] With the development of science and technology, defrosting equipment has been widely used. Compared with traditional natural defrosting or microwave defrosting, radio frequency defrosting has advantages such as fast defrosting speed, uniform defrosting effect, and convenient and hygienic use. In related technologies, when defrosting food, it is usually necessary to defrost the food manually by the user or according to the system's default defrosting parameters. This can easily lead to over-defrosting or insufficient defrosting, resulting in unsatisfactory defrosting effects. Summary of the Invention

[0003] In view of the above-mentioned technical problems in related technologies, the present invention provides a method, apparatus, refrigeration equipment and storage medium for thawing food, so as to obtain radio frequency thawing parameters that match the food to be thawed and improve the thawing effect.

[0004] In a first aspect, embodiments of the present invention provide a fan speed control method for an air conditioner, applied in a refrigeration device with a radio frequency defrosting device, the method comprising:

[0005] The target food information of the food to be thawed is obtained by the sensors installed in the refrigeration equipment. The target food information includes the food type, food quality and initial temperature of the food to be thawed.

[0006] Based on the target ingredient information, determine the radio frequency defrosting parameters corresponding to the target ingredient information;

[0007] The radio frequency defrosting device is controlled to operate with the radio frequency defrosting parameters to defrost the food to be defrosted.

[0008] In some implementations, the sensors installed in the refrigeration equipment include an NFC sensor, and the step of obtaining target food information of the food to be thawed through the sensors installed in the refrigeration equipment includes:

[0009] The food to be thawed is detected using the NFC sensor.

[0010] If an NFC tag is detected on the food to be thawed, the type and quality of the food to be thawed are obtained from the NFC tag by the NFC sensor.

[0011] In some implementations, the sensors installed in the refrigeration equipment include an image acquisition device, and the acquisition of target food information of the food to be thawed through the sensors installed in the refrigeration equipment includes:

[0012] The image acquisition device is used to scan the image of the food to be thawed.

[0013] If the scanning results indicate that the food to be thawed has a graphic code label, the target food identifier is extracted from the graphic code label, and the target entry information corresponding to the target food identifier is determined from the food entry information database.

[0014] The food ingredient database includes the correspondence between food ingredient identifiers and the types and qualities of the food ingredients entered.

[0015] In some implementations, the sensors installed in the refrigeration equipment include an NFC sensor and an image acquisition device. The step of acquiring target food information of the food to be thawed through the sensors installed in the refrigeration equipment includes:

[0016] The food to be thawed is scanned using the NFC sensor and the image acquisition device.

[0017] If the NFC sensor does not scan the NFC tag and the image acquisition device does not scan the graphic code tag, the target image of the food to be thawed is acquired by the image acquisition device, and the target image contains complete image information of the food to be thawed.

[0018] Image recognition is performed on the target image to determine the type and volume of the food to be thawed; based on the volume of the food to be thawed, the mass of the food to be thawed is determined.

[0019] In some implementations, the refrigeration device includes multiple food storage chambers, each with a corresponding storage temperature. The sensors in the refrigeration device include a status sensor for detecting the opening and closing state of each food storage chamber. The acquisition of target food information for the food to be thawed through the sensors in the refrigeration device includes:

[0020] If the status sensor detects that the target storage cavity has switched from a closed state to an open state, it determines the target storage temperature corresponding to the target storage space and uses the target storage temperature as the initial temperature of the food to be thawed.

[0021] In some implementations, the radio frequency defrosting device includes a radio frequency power amplification circuit and a tuning circuit. The radio frequency power amplification circuit is used to output radio frequency power to the tuning circuit. The step of determining the radio frequency defrosting parameters corresponding to the target food based on the target food information includes: determining the target radio frequency defrosting power and the initial defrosting time of the radio frequency defrosting device based on the target food information.

[0022] The step of controlling the radio frequency defrosting device to operate with the radio frequency defrosting parameters to defrost the food to be defrosted includes: controlling the radio frequency defrosting device to defrost the food according to the initial defrosting time at the target radio frequency defrosting power.

[0023] In some implementations, determining the target radio frequency defrosting power and initial defrosting time of the radio frequency defrosting device based on the target ingredient information includes:

[0024] Based on the initial temperature of the food to be thawed and the preset target temperature, the target temperature difference before and after thawing of the food is determined.

[0025] Based on the target temperature difference, the specific heat capacity of the food to be thawed, and the mass of the food to be thawed, the target energy for thawing the food to be thawed is determined.

[0026] Based on the type of the food to be thawed, a target thawing mode for thawing the food is determined, and based on the target thawing mode, a target radio frequency thawing power is determined.

[0027] Based on the target energy, the target radio frequency defrosting power, and the energy absorption efficiency of the food to be defrosted, the initial defrosting time of the food to be defrosted is determined.

[0028] In some implementations, controlling the radio frequency defrosting device to defrost the food to be defrosted according to the initial defrosting time includes:

[0029] The mismatch frequency of the tuning circuit in the early stage of the initial thawing time is obtained as the initial mismatch frequency. The mismatch frequency is used to characterize the frequency at which the tuning circuit is triggered to perform impedance matching.

[0030] The mismatch frequency of the tuning circuit when the food to be thawed undergoes a phase change is determined as a reference mismatch frequency, and the actual time consumed by the tuning circuit to change from the initial mismatch frequency to the reference mismatch frequency is obtained.

[0031] Based on the initial mismatch frequency and the reference mismatch frequency, as well as the actual consumption time, the theoretical thawing time required for the radio frequency thawing device to thaw the food to be thawed is determined.

[0032] The difference between the initial thawing time and the actual consumption time is determined as the initial remaining thawing time, and the difference between the theoretical thawing time and the actual consumption time is determined as the theoretical remaining thawing time.

[0033] If the theoretical remaining thawing time and the initial remaining thawing time are not approximately equal, then the radio frequency thawing device is controlled to thaw the food to be thawed according to the theoretical remaining thawing time.

[0034] In some implementations, controlling the radio frequency defrosting device to defrost the food to be defrosted according to the initial defrosting time includes:

[0035] During the defrosting process of the food in the radio frequency defrosting device, the reflection coefficient of the tuning circuit is detected. The reflection coefficient is used to characterize the power consumption of the radio frequency power amplification circuit.

[0036] If the reflection coefficient changes abruptly, the actual time consumed by the radio frequency defrosting device from the start of defrosting to the change in the reflection coefficient is obtained, the initial mismatch frequency of the tuning circuit at the beginning of the initial defrosting time, and the reference mismatch frequency of the tuning circuit when the reflection coefficient changes abruptly.

[0037] Based on the initial mismatch frequency and the reference mismatch frequency, as well as the actual consumption time, the theoretical thawing time required for the radio frequency thawing device to thaw the food to be thawed is determined.

[0038] The difference between the initial thawing time and the actual consumption time is determined as the initial remaining thawing time, and the difference between the theoretical thawing time and the actual consumption time is determined as the theoretical remaining thawing time.

[0039] If the theoretical remaining thawing time and the initial remaining thawing time are not approximately equal, then the radio frequency thawing device is controlled to thaw the food to be thawed according to the theoretical remaining thawing time.

[0040] Secondly, embodiments of the present invention provide a food defrosting device, applied in a refrigeration device with radio frequency defrosting function, the device comprising:

[0041] The food information acquisition module is used to acquire target food information of the food to be thawed through sensors installed in the refrigeration equipment. The target food information includes the food type, food quality and initial temperature of the food to be thawed.

[0042] The radio frequency defrosting parameter determination module is used to determine the radio frequency defrosting parameters corresponding to the target food information based on the target food information.

[0043] The control module is used to control the radio frequency defrosting device to operate with the radio frequency defrosting parameters in order to defrost the food to be defrosted.

[0044] Thirdly, embodiments of the present invention provide a refrigeration device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the method described in any embodiment of the first aspect.

[0045] Fourthly, embodiments of the present invention provide a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the above-described food thawing method.

[0046] The embodiments of the present invention provide one or more technical solutions that achieve at least the following technical effects or advantages:

[0047] The food thawing method provided in this specification is applied to a refrigeration device equipped with a radio frequency (RF) thawing unit. During the thawing process, sensors installed in the refrigeration device acquire target food information, including the food type, weight, and initial temperature. Based on this information, RF thawing parameters are determined. The RF thawing unit is then controlled to operate according to these parameters to thaw the food. In this scheme, the RF thawing parameters are determined based on the food information, ensuring they match the actual state of the food. Therefore, the determined RF thawing parameters allow for precise thawing, effectively improving the thawing effect. Furthermore, since the food information is acquired using existing sensors in the refrigeration device, it does not increase the cost or complexity of the equipment, thus saving on equipment costs. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 A flowchart of a food thawing method provided in an embodiment of the present invention;

[0050] Figure 2 A schematic diagram of a refrigerator system with radio frequency defrosting function provided in an embodiment of the present invention;

[0051] Figure 3 This is a schematic diagram of a food defrosting device provided in an embodiment of the present invention;

[0052] Figure 4 This is a schematic diagram of a refrigeration device provided in an embodiment of the present invention. Detailed Implementation

[0053] This specification provides a method, apparatus, refrigeration equipment, and storage medium for thawing food. The method is applied in a refrigeration equipment with a radio frequency (RF) defrosting device. The method includes: during the thawing process of the food to be thawed, acquiring target food information of the food to be thawed through sensors installed in the refrigeration equipment, the target food information including the food type, food mass, and initial temperature of the food to be thawed; determining RF defrosting parameters corresponding to the food to be thawed based on the food information; and controlling the RF defrosting device to operate at the RF defrosting parameters to thaw the food to be thawed.

[0054] In the above solution, the radio frequency (RF) defrosting parameters are determined based on the food information of the food to be defrosted. This ensures that the RF defrosting parameters match the actual state of the food, allowing for precise defrosting and effectively improving the defrosting effect. Furthermore, since the food information is obtained using existing sensors in the refrigeration equipment, it does not increase the cost or complexity of the equipment, thus saving on equipment costs.

[0055] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0056] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0057] like Figure 1 The diagram shown is a flowchart of a food thawing method provided in an embodiment of this specification. The method includes the following steps:

[0058] Step S101: Obtain target ingredient information of the food to be thawed through the sensor installed in the refrigeration equipment. The target ingredient information includes the type of food, the mass of food, and the initial temperature of food.

[0059] Step S102: Based on the target ingredient information, determine the radio frequency defrosting parameters corresponding to the target ingredient information;

[0060] Step S103: Control the radio frequency defrosting device to operate with the radio frequency defrosting parameters to defrost the food to be defrosted.

[0061] The method provided in the embodiments of this specification can be applied to refrigeration equipment with a radio frequency defrosting device. The refrigeration equipment can be a refrigerator, freezer, or other equipment with radio frequency defrosting function, and is not limited here. For ease of explanation, this specification embodiment takes a refrigerator with radio frequency defrosting function as the refrigeration equipment to provide a detailed description of the food defrosting method provided in the embodiments of this specification.

[0062] like Figure 2 The diagram shown is a schematic of a refrigerator system with radio frequency defrosting function provided in an embodiment of this specification. Figure 2 As shown, the refrigerator system may include a defrosting control system and a refrigerator control system.

[0063] The defrosting control system includes a hardware system and a control system. The hardware system includes an adjustable power supply for providing power to the entire refrigeration equipment and enabling output voltage regulation; an RF power amplifier circuit for outputting RF power to the tuning circuit and providing RF defrosting energy to the food during the defrosting process; a tuning circuit for compensating for load impedance mismatch caused by changes in the state of the food; and a defrosting chamber for accommodating the food to be defrosted.

[0064] like Figure 2 The control system shown includes power closed-loop control, which samples the forward and reverse power signals and outputs control signals to the adjustable power supply and RF power amplifier circuit to achieve precise output power closed-loop control; automatic matching control, which automatically acquires the forward and reverse power signals to automatically send impedance matching commands to the tuning circuit when impedance mismatch occurs; and defrosting process control, which controls the output power curve and output time according to the needs of food identification and defrosting process.

[0065] In addition, the defrosting control system also includes a first communication interface for data communication with the refrigerator control system.

[0066] like Figure 2As shown, the refrigerator control system includes a second communication interface, a sensor group, and a main controller. The second communication interface is used to communicate with the defrosting control system. The sensor group includes one or more sensors used to acquire food information about the food to be defrosted. The main controller is used to estimate the radio frequency defrosting parameters.

[0067] It should be noted that the sensor group includes N sensors, where N is a positive integer. The types of sensors can include, but are not limited to, NFC (Near Field Communication) sensors, image acquisition devices, temperature sensors, status detection sensors, and infrared sensors. The number of each type of sensor used in the refrigeration equipment can be selected according to actual needs and is not limited here.

[0068] In step S101, the target ingredient information for the food to be thawed includes, but is not limited to, ingredient type, ingredient quality, and initial temperature. Ingredient type includes, but is not limited to, fat content, water content, and specific species of the ingredient. Since the refrigeration equipment has N sensors, the method of acquiring the target ingredient information will differ depending on the type of sensor. Below, we will explain the process of acquiring target ingredient information using NFC sensors, image acquisition devices, and status detection sensors as examples.

[0069] 1. The sensor is an NFC sensor.

[0070] In the specific implementation process, the target ingredient information can be obtained through the following steps: the NFC sensor detects the ingredient to be thawed; if an NFC tag is detected on the ingredient to be thawed, the ingredient type and quality of the ingredient to be thawed are obtained from the NFC tag read by the NFC sensor.

[0071] Specifically, the NFC sensor can be installed on the refrigeration equipment. For example, taking a refrigerator with an RFID defrosting device as an example, the refrigerator has an NFC sensor. If the food to be defrosted has an NFC tag, simply scanning the NFC tag with the NFC sensor will read the food type, quality, and other information. Alternatively, the NFC sensor can be an NFC sensor on the user's terminal. For example, the user can scan the NFC tag on the food to be defrosted with an NFC-enabled mobile phone, and then send the scanned information, such as the food type and quality, to the refrigeration equipment.

[0072] It should be noted that each food item to be thawed can be pre-assigned with its own NFC tag. For example, for food item A to be thawed, information such as the type and quality of food item A can be written into the NFC tag of food item A through a user terminal or refrigeration equipment, and then the NFC tag with the written data can be attached to food item A.

[0073] Taking the refrigerator system with radio frequency defrosting function as an example, if the food to be defrosted has an NFC tag, the NFC tag can be scanned by the NFC sensor on the refrigerator to read information such as the type and quality of the food to be defrosted. When the system detects that the food to be defrosted has been placed in the defrosting cavity, the defrosting control system will perform precise defrosting control based on the specific information of the food to be defrosted.

[0074] II. The sensor is an image acquisition device.

[0075] In the specific implementation process, the target ingredient information can be obtained through the following steps: the image acquisition device scans the image of the ingredient to be thawed; if the scanning result shows that the ingredient to be thawed has a graphic code label, the target ingredient identifier is extracted from the graphic code label, and the target entry information corresponding to the target ingredient identifier is determined from the ingredient entry information database; wherein, the ingredient entry information database includes the correspondence between the ingredient identifier and the entered ingredient type and ingredient quality.

[0076] Specifically, the image acquisition device can be installed on the refrigeration equipment. For example, taking a refrigerator with an radio frequency defrosting device as an example, the refrigerator is equipped with an image acquisition device. If the food to be defrosted has a graphic code label, such as a QR code or barcode, the image acquisition device can scan and parse the graphic code label to obtain the target food identifier corresponding to the graphic code.

[0077] In this embodiment of the specification, for each graphic code corresponding to a food ingredient identifier, information such as the food type and quality corresponding to each food ingredient identifier can be pre-entered into the system. This establishes a correspondence between food ingredient identifiers and information such as food type and food instructions, forming a food ingredient entry information database. Therefore, after obtaining the target food ingredient identifier by scanning the graphic code label of the food ingredient to be thawed, the food ingredient type, quality, and other information of the food ingredient to be thawed can be obtained by querying the food ingredient entry information database.

[0078] Of course, the graphic code can also directly contain information such as the type and quality of the ingredients. In that case, the ingredient information of the corresponding ingredients can be obtained directly by parsing the graphic code. There is no limitation here.

[0079] It should be noted that for each food item to be thawed, a corresponding graphic code label can be pre-attached to it. When thawing the food item, simply scan the graphic code label with an image acquisition device to obtain information such as the food type and quality.

[0080] III. Sensors include NFC sensors and image acquisition devices.

[0081] In the specific implementation process, the target ingredient information can be obtained through the following steps: scanning the ingredient to be thawed using the NFC sensor and the image acquisition device; if the NFC sensor does not scan the NFC tag and the image acquisition device does not scan the graphic code tag, acquiring the target image of the ingredient to be thawed using the image acquisition device, the target image containing complete image information of the ingredient to be thawed; performing image recognition on the target image to determine the ingredient type and volume of the ingredient to be thawed; and determining the ingredient mass of the ingredient to be thawed based on the volume of the ingredient to be thawed.

[0082] Specifically, the refrigeration equipment is equipped with both an NFC sensor and an image acquisition device. The NFC sensor can be used to scan the NFC tags on the food to be thawed, and the image acquisition device can be used to scan the graphic codes on the food to be thawed.

[0083] In this embodiment, if the NFC sensor does not detect the NFC tag and the image acquisition device does not scan the graphic code tag, the type and quality of the food can be estimated. When estimating the information of the food to be thawed, a target image including complete image information of the food can be acquired by the image acquisition device, and then image recognition can be performed on the target image. In one embodiment, an image recognition model can be pre-trained; the image recognition model can be a convolutional neural network model or other types of models, which are not limited here. After obtaining the target image, the target image is input into the image recognition model to output the type of the food to be thawed. The final output food type can be the major category of the food to be thawed, such as vegetables, fruits, meat, etc., or it can be a specific food type, such as apples, broccoli, meat, etc., which are not limited here.

[0084] When estimating the mass of food to be thawed, the target image can be processed first to determine the size of the food within the image. Then, based on the correspondence between the image coordinate system and the world coordinate system, the size of the food in the image can be converted to its actual size in world coordinates, thus obtaining the volume of the food. Furthermore, after identifying the type of food through image recognition, the density of the food can be determined using a pre-defined correspondence between food type and food density. Finally, based on the density and volume of the food, its mass can be estimated.

[0085] IV. The sensor is a status sensor.

[0086] In the specific implementation process, the refrigeration equipment may include multiple food storage cavities, each of which is set with a corresponding storage temperature. The target food information can be determined by the status sensor through the following steps: if the status sensor detects that the target storage cavity has switched from a closed state to an open state, the target storage temperature corresponding to the target storage cavity is determined, and the target storage temperature is used as the initial temperature of the food to be thawed.

[0087] Specifically, taking a refrigerator with an radio frequency defrosting device as an example, the refrigerator can have multiple food storage compartments. These compartments can be independent drawers for categorized storage. Each compartment can have its own storage temperature, which can be set by the user or be the system default. The storage temperatures can be the same or different for different compartments; there is no limitation on this.

[0088] Generally, before thawing food, it needs to be removed from its corresponding storage chamber and placed into the thawing chamber. Therefore, a status sensor can detect which storage chamber was opened before thawing and designate the opened chamber as the target storage chamber, thus setting the target storage temperature of the target chamber as the initial temperature of the food to be thawed.

[0089] Of course, to accurately determine the target storage cavity corresponding to the food to be thawed, when an opening of the storage cavity is detected, an image acquisition device can be used to acquire image information of the food removed from the opened cavity, and simultaneously, image information of the food placed in the thawing cavity. In one embodiment, if multiple storage cavities are detected to be open, image information of the food corresponding to each storage cavity is obtained, and these images are matched with the image information of the food placed in the thawing cavity. The storage cavity corresponding to the successfully matched food image information is then used as the target storage cavity.

[0090] It should be noted that different types of sensors can be combined according to actual needs during the implementation process, and no restrictions are imposed here.

[0091] In step S102, after obtaining the target ingredient information, the radio frequency (RF) defrosting parameters corresponding to the target ingredient information are determined. In practice, the RF defrosting parameters can be implemented in various ways. For example, a pre-set correspondence between ingredient information and RF defrosting parameters can be used. After determining the target ingredient information, the RF defrosting parameters corresponding to the target ingredient information can be obtained by querying this correspondence.

[0092] In this embodiment of the specification, step S102 may specifically be: determining the target radio frequency defrosting power and initial defrosting time of the radio frequency defrosting device based on the target food information; further, step S103 may be: controlling the radio frequency defrosting device to defrost the food according to the target radio frequency defrosting power and the initial defrosting time.

[0093] Specifically, the target radio frequency defrosting power and initial defrosting time can be achieved in various ways. In some embodiments, for each type of food, the radio frequency defrosting power and initial defrosting time corresponding to that type of food can be preset. After determining the target type of the food to be defrosted, the target radio frequency defrosting power and initial defrosting time can be obtained by querying the preset correspondence.

[0094] In this embodiment of the specification, the target radio frequency defrosting power and the initial defrosting time can be obtained through the following steps: Based on the initial temperature of the food to be defrosted and a preset target temperature, determine the target temperature difference before and after defrosting; based on the target temperature difference, the specific heat capacity of the food to be defrosted, and the mass of the food to be defrosted, determine the target energy for defrosting the food to be defrosted; based on the type of the food to be defrosted, determine the target defrosting mode for defrosting the food to be defrosted, and based on the target defrosting mode, determine the target radio frequency defrosting power; based on the target energy, the target radio frequency defrosting power, and the energy absorption efficiency of the food to be defrosted, determine the initial defrosting time of the food to be defrosted.

[0095] Specifically, the refrigeration equipment can be preset with multiple defrosting modes. For example, multiple defrosting modes can be preset for different foods, such as a defrosting mode for pork, fish, and shrimp. Each defrosting mode is configured with its own radio frequency (RF) defrosting power. The RF defrosting power for each mode can be a fixed value or a RF defrosting power variation curve. When the defrosting power is displayed as an RF defrosting power variation curve, the food to be defrosted can absorb different RF power at different defrosting stages. This avoids wasting RF energy and improves the accuracy of the defrosting scheme matched to the food by the RF defrosting device.

[0096] In the specific implementation process, after the sensor of the refrigeration equipment identifies the type of food to be thawed, the target thawing mode corresponding to the type of food is determined, and the radio frequency thawing power corresponding to the target thawing mode is used as the target radio frequency thawing power.

[0097] In this embodiment of the specification, when determining the initial thawing time, the target energy required by the food to be thawed during the thawing process can be determined first. Specifically, based on the initial temperature of the food to be thawed and the preset target temperature, the target temperature difference before and after thawing is calculated. The target temperature is the temperature of the food after thawing; typically, the target temperature range is -5°C to 0°C. The specific target temperature can be set according to actual needs and is not limited here. The difference between the target temperature and the initial temperature is taken as the target temperature difference. Furthermore, based on the type of food to be thawed, the specific heat capacity of the food to be thawed is determined by querying the preset correspondence between food type and specific heat capacity. Further, the target energy required for thawing the food can be calculated using the following formula:

[0098] Q = mct

[0099] Where Q is the target energy required for thawing, m is the mass of the food to be thawed, c is the specific heat capacity of the food to be thawed, and t is the target temperature difference of the food to be thawed.

[0100] Furthermore, the initial thawing time can be determined using the following formula:

[0101]

[0102] Where T is the initial defrosting time, p is the target radio frequency defrosting power, and η is the energy absorption efficiency of the food to be defrosted. η can be a fixed value, such as 80% or 85%. Of course, η can also vary depending on the food to be defrosted. For example, the correspondence between different foods and η can be pre-set, and the final value of η can be determined by querying the correspondence.

[0103] In step S103, after obtaining the radio frequency (RF) defrosting parameters for the food to be defrosted, the RF defrosting device is controlled to operate according to the RF defrosting parameters to defrost the food. For the RF defrosting device in the embodiments of this specification, after obtaining the target RF defrosting power and the initial defrosting time, the food to be defrosted can be defrosted according to the target RF defrosting power and the initial defrosting time.

[0104] Considering that the state of the food to be thawed is constantly changing during the thawing process, the actual thawing time of the food to be thawed may not match the initial thawing time. If only the initial thawing time is used for thawing without controlling the thawing time of the food to be thawed, problems such as over-thawing or insufficient thawing may occur.

[0105] Based on this, for food items to be thawed, the method in the embodiments of this specification can also calculate the theoretical thawing time of the food items to be thawed, and determine the final thawing time of the food items to be thawed based on the relationship between the theoretical thawing time and the initial thawing time.

[0106] The theoretical thawing time can be determined in several ways. Below, we will explain two of the methods for determining the theoretical thawing time.

[0107] First implementation method:

[0108] The following steps are taken: First, the mismatch frequency of the tuning circuit at the initial stage of the initial thawing time is obtained as the initial mismatch frequency, which characterizes the frequency at which the tuning circuit is triggered for impedance matching. Second, the mismatch frequency of the tuning circuit when the food to be thawed undergoes a phase transition is determined as the reference mismatch frequency, and the actual time consumed by the tuning circuit from the initial mismatch frequency to the reference mismatch frequency is obtained. Third, based on the initial mismatch frequency, the reference mismatch frequency, and the actual time consumed, the theoretical thawing time required for the radio frequency thawing device to thaw the food to be thawed is determined. Fourth, the difference between the initial thawing time and the actual time consumed is determined as the initial remaining thawing time, and the difference between the theoretical thawing time and the actual time consumed is determined as the theoretical remaining thawing time. Fifth, if the theoretical remaining thawing time and the initial remaining thawing time are not approximately equal, the radio frequency thawing device is controlled to thaw the food to be thawed according to the theoretical remaining thawing time.

[0109] Specifically, the mismatch frequency can be interpreted as the number of times impedance mismatch occurs in the tuning circuit within a certain time period (i.e., the number of impedance matching operations). In the initial stage of the thawing process, because most of the free water in the food exists in the form of ice, and ice has a low specific heat capacity, the food heats up faster when it absorbs energy than in the later stages of thawing. Therefore, the rate of change of the state of the free water inside the food is faster in the initial stage, resulting in a higher frequency of tuning circuit mismatch in the initial stage. Thus, the initial mismatch frequency can be understood as the maximum mismatch frequency during the entire thawing process of the food.

[0110] For the mismatch frequency when thawed food undergoes a phase change, since the water content and specific heat capacity of different foods will affect the shape of the mismatch frequency change curve, the mismatch frequency (i.e., the reference mismatch frequency) when different foods undergo a phase change is not a fixed value.

[0111] In some implementations, a reference mismatch frequency can be determined using the initial mismatch frequency. For example, if the initial mismatch frequency is F1, F2 = F1 × 25% can be used as the reference mismatch frequency. It is understood that in this implementation, the mismatch frequency can be monitored in real time, and when the monitored mismatch frequency value is the reference mismatch frequency, the actual time consumed is determined.

[0112] In some implementations, the theoretical thawing time can be determined by the following steps: calculating the ratio between the initial mismatch frequency and the reference mismatch frequency as a reference multiple; and determining the theoretical thawing time required for the radio frequency thawing device to thaw the food based on the actual consumption time and according to the reference multiple.

[0113] For example, if the initial mismatch frequency is determined to be 60 and the reference mismatch frequency is 20, then the ratio of the initial mismatch frequency to the reference mismatch frequency can be calculated to be 3. If the actual time taken for the food to thaw from the initial mismatch frequency to the reference mismatch frequency is 0.5 hours, then the theoretical thawing time can be determined to be 1.5 hours.

[0114] In some implementations, the theoretical thawing time can also be determined as follows: The theoretical thawing time required for the food is determined by multiplying the actual consumption time by an empirical value. For example, if the actual consumption time is determined to be 0.5 hours and the empirical value is 5, then the theoretical thawing time can be determined to be 2.5 hours.

[0115] Furthermore, after obtaining the theoretical thawing time, based on the initial thawing time and the actual consumption time, the initial remaining thawing time and the theoretical remaining thawing time are determined, and it is judged whether the initial remaining thawing time and the theoretical thawing time are approximately equal.

[0116] It should be noted that a preset difference can be used to determine whether the approximate equality is satisfied. For example, if the preset difference is set to 3 minutes, and the theoretical remaining thawing time is 60 minutes and the initial remaining thawing time is 65 minutes, then it can be determined that the theoretical remaining thawing time and the initial remaining thawing time do not satisfy the approximate equality.

[0117] Alternatively, rounding can be used to determine whether the two are approximately equal. For example, if the theoretical remaining thawing time is 64 minutes and the initial remaining thawing time is 60 minutes, then by rounding, the theoretical remaining thawing time can be considered to be 60 minutes, and thus the theoretical remaining thawing time and the initial remaining thawing time are approximately equal.

[0118] It is evident that by utilizing the mismatch frequency of the tuning circuit during the food thawing process to re-determine the thawing time, the initial thawing time is essentially corrected. This, to a certain extent, improves the accuracy of the radio frequency thawing device in thawing food.

[0119] The second implementation method:

[0120] During the defrosting process of the RF defrosting device, the reflection coefficient of the tuning circuit is detected. The reflection coefficient is used to characterize the power consumption of the RF power amplifier circuit. If the reflection coefficient changes abruptly, the actual time consumed by the RF defrosting device from the start of defrosting to the change in reflection coefficient is obtained, along with the initial mismatch frequency of the tuning circuit at the beginning of the initial defrosting time and the reference mismatch frequency of the tuning circuit when the reflection coefficient changes abruptly. Based on the initial mismatch frequency, the reference mismatch frequency, and the actual time consumed, the theoretical defrosting time required by the RF defrosting device to defrost the food to be defrosted is determined. The difference between the initial defrosting time and the actual time consumed is determined as the initial remaining defrosting time, and the difference between the theoretical defrosting time and the actual time consumed is determined as the theoretical remaining defrosting time. If the theoretical remaining defrosting time and the initial remaining defrosting time are not approximately equal, the RF defrosting device is controlled to defrost the food to be defrosted according to the theoretical remaining defrosting time.

[0121] Specifically, during the thawing process, the reflectance of food should change in a stable trend. However, if the food itself contains a lot of ice, at a certain point in time, many ice cubes will melt into water and flow into a new position in the food cavity. This will disrupt the original stable trend of the reflectance.

[0122] In some embodiments, the specific implementation of detecting the reflection coefficient of the tuning circuit can be achieved by the following steps: obtaining the power value output by the radio frequency power amplification circuit as the forward power value, and obtaining the power value output by the tuning circuit as the reverse power value; calculating the ratio between the reflected power value and the forward power value, and determining the ratio as the reflection coefficient.

[0123] If the reflection coefficient changes abruptly, the actual time consumed by the radio frequency defrosting device from the start of defrosting to the change in the reflection coefficient is obtained, the initial mismatch frequency of the tuning circuit at the beginning of the initial defrosting time, and the reference mismatch frequency of the tuning circuit when the reflection coefficient changes abruptly; the mismatch frequency is used to characterize the frequency at which the tuning circuit is triggered to perform impedance matching.

[0124] It should be noted that not all foods will experience a sudden change in reflectance during the thawing process. If no sudden change in reflectance is detected, the radio frequency thawing device can be controlled to thaw the food within the initial thawing time.

[0125] The method for determining the theoretical thawing time can be found in the first implementation method, and will not be repeated here. Further, based on the theoretical thawing time, the initial thawing time, and the actual time consumed, the initial remaining thawing time and the theoretical remaining thawing time are determined. It is then determined whether the initial remaining thawing time is approximately equal to the theoretical thawing time to decide whether to thaw the food according to the theoretical remaining thawing time.

[0126] It is evident that by utilizing the abrupt changes in the reflectance coefficient during the thawing process to re-determine the thawing time of the food, the initial thawing time can be modified to a certain extent. This can further improve the accuracy of the radio frequency thawing device in thawing food.

[0127] In addition, to prevent over-thawing, the embodiments of this specification may also perform the following steps:

[0128] During the operation of the initial thawing time, the temperature of the food to be thawed is monitored; if the temperature of the food to be thawed reaches the target temperature, the thawing of the food to be thawed is stopped; if the temperature of the food to be thawed does not reach the target temperature during the operation, the thawing of the food to be thawed is stopped after the initial thawing time has elapsed.

[0129] Specifically, if the temperature of the food to be thawed reaches the target temperature during the thawing process, it indicates that the food is basically thawed. To avoid over-thawing, the thawing process can be stopped before the initial thawing time is reached. If the temperature of the food to be thawed remains below the target temperature throughout the entire thawing process, the thawing process will stop after the initial thawing time has elapsed.

[0130] In summary, the method provided in this specification can acquire information about the food to be thawed using existing sensors in the refrigeration equipment without increasing the cost or complexity of the equipment. Furthermore, the sensors can accurately acquire target food information such as the type and quality of the food to be thawed. The radio frequency (RF) defrosting parameters determined based on this target food information can be matched with the food to be thawed. Therefore, using RF defrosting parameters determined in this way can effectively improve the defrosting effect.

[0131] Based on the same inventive concept, this invention provides a food defrosting device for use in refrigeration equipment with radio frequency defrosting function. Please refer to [link / reference]. Figure 3 The device includes:

[0132] The food information acquisition module 301 is used to acquire target food information of the food to be thawed through the sensors installed in the refrigeration equipment. The target food information includes the food type, food quality and initial temperature of the food to be thawed.

[0133] The radio frequency defrosting parameter determination module 302 is used to determine the radio frequency defrosting parameters corresponding to the target food information based on the target food information;

[0134] The control module 303 is used to control the radio frequency defrosting device to operate with the radio frequency defrosting parameters in order to defrost the food to be defrosted.

[0135] In some implementations, the sensors installed in the refrigeration equipment include an NFC sensor and a food information acquisition module 301, used for:

[0136] The food to be thawed is detected using the NFC sensor.

[0137] If an NFC tag is detected on the food to be thawed, the type and quality of the food to be thawed are obtained from the NFC tag by the NFC sensor.

[0138] In some implementations, the sensors installed in the refrigeration equipment include an image acquisition device and a food information acquisition module 301, used for:

[0139] The image acquisition device is used to scan the image of the food to be thawed.

[0140] If the scanning results indicate that the food to be thawed has a graphic code label, the target food identifier is extracted from the graphic code label, and the target entry information corresponding to the target food identifier is determined from the food entry information database.

[0141] The food ingredient database includes the correspondence between food ingredient identifiers and the types and qualities of the food ingredients entered.

[0142] In some implementations, the sensors installed in the refrigeration equipment include an NFC sensor and an image acquisition device. The food information acquisition module 301 is used for:

[0143] The food to be thawed is scanned using the NFC sensor and the image acquisition device.

[0144] If the NFC sensor does not scan the NFC tag and the image acquisition device does not scan the graphic code tag, the target image of the food to be thawed is acquired by the image acquisition device, and the target image contains complete image information of the food to be thawed.

[0145] Image recognition is performed on the target image to determine the type and volume of the food to be thawed; based on the volume of the food to be thawed, the mass of the food to be thawed is determined.

[0146] In some embodiments, the refrigeration equipment includes multiple food storage chambers, each with a corresponding storage temperature. The sensors in the refrigeration equipment include a status sensor for detecting the opening and closing state of each food storage chamber. A food information acquisition module 301 is used for:

[0147] If the status sensor detects that the target storage cavity has switched from a closed state to an open state, it determines the target storage temperature corresponding to the target storage space and uses the target storage temperature as the initial temperature of the food to be thawed.

[0148] In some embodiments, the radio frequency defrosting device includes a radio frequency power amplification circuit and a tuning circuit, wherein the radio frequency power amplification circuit is used to output radio frequency power to the tuning circuit;

[0149] The radio frequency defrosting parameter determination module 302 is used to determine the target radio frequency defrosting power and initial defrosting time of the radio frequency defrosting device based on the target food information;

[0150] The control module 303 is used to control the radio frequency defrosting device to defrost the food according to the initial defrosting time under the target radio frequency defrosting power.

[0151] In some implementations, the radio frequency defrosting parameter determination module 302 is used for:

[0152] Based on the initial temperature of the food to be thawed and the preset target temperature, the target temperature difference before and after thawing of the food is determined.

[0153] Based on the target temperature difference, the specific heat capacity of the food to be thawed, and the mass of the food to be thawed, the target energy for thawing the food to be thawed is determined.

[0154] Based on the type of the food to be thawed, a target thawing mode for thawing the food is determined, and based on the target thawing mode, a target radio frequency thawing power is determined.

[0155] Based on the target energy, the target radio frequency defrosting power, and the energy absorption efficiency of the food to be defrosted, the initial defrosting time of the food to be defrosted is determined.

[0156] In some implementations, the control module 303 is used for:

[0157] The mismatch frequency of the tuning circuit in the early stage of the initial thawing time is obtained as the initial mismatch frequency. The mismatch frequency is used to characterize the frequency at which the tuning circuit is triggered to perform impedance matching.

[0158] The mismatch frequency of the tuning circuit when the food to be thawed undergoes a phase change is determined as a reference mismatch frequency, and the actual time consumed by the tuning circuit to change from the initial mismatch frequency to the reference mismatch frequency is obtained.

[0159] Based on the initial mismatch frequency and the reference mismatch frequency, as well as the actual consumption time, the theoretical thawing time required for the radio frequency thawing device to thaw the food to be thawed is determined.

[0160] The difference between the initial thawing time and the actual consumption time is determined as the initial remaining thawing time, and the difference between the theoretical thawing time and the actual consumption time is determined as the theoretical remaining thawing time.

[0161] If the theoretical remaining thawing time and the initial remaining thawing time are not approximately equal, then the radio frequency thawing device is controlled to thaw the food to be thawed according to the theoretical remaining thawing time.

[0162] In some implementations, the control module 303 is used for:

[0163] During the defrosting process of the food in the radio frequency defrosting device, the reflection coefficient of the tuning circuit is detected. The reflection coefficient is used to characterize the power consumption of the radio frequency power amplification circuit.

[0164] If the reflection coefficient changes abruptly, the actual time consumed by the radio frequency defrosting device from the start of defrosting to the change in the reflection coefficient is obtained, the initial mismatch frequency of the tuning circuit at the beginning of the initial defrosting time, and the reference mismatch frequency of the tuning circuit when the reflection coefficient changes abruptly.

[0165] Based on the initial mismatch frequency and the reference mismatch frequency, as well as the actual consumption time, the theoretical thawing time required for the radio frequency thawing device to thaw the food to be thawed is determined.

[0166] The difference between the initial thawing time and the actual consumption time is determined as the initial remaining thawing time, and the difference between the theoretical thawing time and the actual consumption time is determined as the theoretical remaining thawing time.

[0167] If the theoretical remaining thawing time and the initial remaining thawing time are not approximately equal, then the radio frequency thawing device is controlled to thaw the food to be thawed according to the theoretical remaining thawing time.

[0168] Regarding the above-mentioned device, the specific functions of each module have been described in detail in the embodiments of the food thawing method provided in this specification, and will not be elaborated here.

[0169] Based on the same inventive concept, embodiments of the present invention provide a refrigeration device, see reference. Figure 4 As shown, the device includes: a memory 404, a processor 402, and a computer program stored in the memory 404 and executable on the processor 402. When the processor 402 executes the program, it implements any one of the embodiments of the food thawing method.

[0170] Among them, Figure 4In this document, a bus architecture (represented by bus 400) is used. Bus 400 may include any number of interconnected buses and bridges, linking various circuits including one or more processors represented by processor 402 and memory represented by memory 404. Bus 400 may also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. Bus interface 405 provides an interface between bus 400 and receiver 401 and transmitter 403. Receiver 401 and transmitter 403 may be the same element, i.e., a transceiver, providing a unit for communicating with various other devices over a transmission medium. Processor 402 is responsible for managing bus 400 and general processing, while memory 404 can be used to store data used by processor 402 during operation.

[0171] The functions described herein can be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions can be stored as one or more instructions or codes on or transmitted via a computer-readable medium. Other examples and embodiments are within the scope and spirit of this invention and the appended claims. For example, due to the nature of software, the functions described above can be implemented using software executed by a processor, hardware, firmware, hardwired, or any combination thereof. Furthermore, the functional units can be integrated into a single processing unit, or each unit can exist physically separately, or two or more units can be integrated into a single unit.

[0172] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0173] The units described as separate components may or may not be physically separate. Similarly, the components of the control device may or may not be physical units; they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0174] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0175] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A method for thawing food, characterized in that, A method applicable to refrigeration equipment with an RF defrosting device, wherein the RF defrosting device includes an RF power amplification circuit and a tuning circuit, the RF power amplification circuit being used to output RF power to the tuning circuit, the method comprising: The target food information of the food to be thawed is obtained by the sensors installed in the refrigeration equipment. The target food information includes the food type, food quality and initial temperature of the food to be thawed. Based on the target ingredient information, radio frequency (RF) defrosting parameters corresponding to the target ingredient information are determined, and the RF defrosting parameters include the initial defrosting time; Controlling the radio frequency defrosting device to operate with the radio frequency defrosting parameters to defrost the food to be defrosted includes: The mismatch frequency of the tuning circuit in the early stage of the initial thawing time is obtained as the initial mismatch frequency. The mismatch frequency is used to characterize the frequency at which the tuning circuit is triggered to perform impedance matching. The mismatch frequency of the tuning circuit when the food to be thawed undergoes a phase change is determined as a reference mismatch frequency, and the actual time consumed by the tuning circuit to change from the initial mismatch frequency to the reference mismatch frequency is obtained. Based on the initial mismatch frequency and the reference mismatch frequency, as well as the actual consumption time, the theoretical thawing time required for the radio frequency thawing device to thaw the food to be thawed is determined. The difference between the initial thawing time and the actual consumption time is determined as the initial remaining thawing time, and the difference between the theoretical thawing time and the actual consumption time is determined as the theoretical remaining thawing time. If the theoretical remaining thawing time and the initial remaining thawing time are not approximately equal, then the radio frequency thawing device is controlled to thaw the food to be thawed according to the theoretical remaining thawing time, wherein a preset difference is used to determine whether the approximate equality is satisfied.

2. The method as described in claim 1, characterized in that, The sensors installed in the refrigeration equipment include an NFC sensor. The process of obtaining target food information for the food to be thawed through the sensors installed in the refrigeration equipment includes: The food to be thawed is detected using the NFC sensor. If an NFC tag is detected on the food to be thawed, the type and quality of the food to be thawed are obtained from the NFC tag by the NFC sensor.

3. The method as described in claim 1, characterized in that, The sensors installed in the refrigeration equipment include an image acquisition device. The process of acquiring target food information of the food to be thawed through the sensors installed in the refrigeration equipment includes: The image acquisition device is used to scan the image of the food to be thawed. If the scanning results indicate that the food to be thawed has a graphic code label, the target food identifier is extracted from the graphic code label, and the target entry information corresponding to the target food identifier is determined from the food entry information database. The food ingredient database includes the correspondence between food ingredient identifiers and the types and qualities of the food ingredients entered.

4. The method as described in claim 1, characterized in that, The sensors installed in the refrigeration equipment include an NFC sensor and an image acquisition device. The process of acquiring target food information of the food to be thawed through the sensors installed in the refrigeration equipment includes: The food to be thawed is scanned using the NFC sensor and the image acquisition device. If the NFC sensor does not scan the NFC tag and the image acquisition device does not scan the graphic code tag, the target image of the food to be thawed is acquired by the image acquisition device, and the target image contains complete image information of the food to be thawed. Image recognition is performed on the target image to determine the type and volume of the food to be thawed, and the mass of the food to be thawed is determined based on the volume of the food.

5. The method as described in claim 1, characterized in that, The refrigeration equipment includes multiple food storage chambers, each with a corresponding storage temperature. The sensors in the refrigeration equipment include a status sensor for detecting the opening and closing state of each food storage chamber. Obtaining target food information for the food to be thawed through the sensors in the refrigeration equipment includes: If the status sensor detects that the target storage cavity has switched from a closed state to an open state, it determines the target storage temperature corresponding to the target storage cavity and uses the target storage temperature as the initial temperature of the food to be thawed.

6. The method as described in claim 1, characterized in that, The step of determining the radio frequency defrosting parameters corresponding to the target ingredient based on the target ingredient information includes: determining the target radio frequency defrosting power and initial defrosting time of the radio frequency defrosting device based on the target ingredient information; The step of controlling the radio frequency defrosting device to operate with the radio frequency defrosting parameters to defrost the food to be defrosted includes: controlling the radio frequency defrosting device to defrost the food according to the initial defrosting time at the target radio frequency defrosting power.

7. The method as described in claim 6, characterized in that, The step of determining the target radio frequency defrosting power and initial defrosting time of the radio frequency defrosting device based on the target food information includes: Based on the initial temperature of the food to be thawed and the preset target temperature, the target temperature difference before and after thawing of the food is determined. Based on the target temperature difference, the specific heat capacity of the food to be thawed, and the mass of the food to be thawed, the target energy for thawing the food to be thawed is determined. Based on the type of the food to be thawed, a target thawing mode for thawing the food is determined, and based on the target thawing mode, a target radio frequency thawing power is determined. Based on the target energy, the target radio frequency defrosting power, and the energy absorption efficiency of the food to be defrosted, the initial defrosting time of the food to be defrosted is determined.

8. The method as described in claim 6, characterized in that, The step of controlling the radio frequency defrosting device to defrost the food to be defrosted according to the initial defrosting time includes: During the defrosting process of the food in the radio frequency defrosting device, the reflection coefficient of the tuning circuit is detected. The reflection coefficient is used to characterize the power consumption of the radio frequency power amplification circuit. If the reflection coefficient changes abruptly, the actual time consumed by the radio frequency defrosting device from the start of defrosting to the change in the reflection coefficient is obtained, the initial mismatch frequency of the tuning circuit at the beginning of the initial defrosting time, and the reference mismatch frequency of the tuning circuit when the reflection coefficient changes abruptly. Based on the initial mismatch frequency and the reference mismatch frequency, as well as the actual consumption time, the theoretical thawing time required for the radio frequency thawing device to thaw the food to be thawed is determined. The difference between the initial thawing time and the actual consumption time is determined as the initial remaining thawing time, and the difference between the theoretical thawing time and the actual consumption time is determined as the theoretical remaining thawing time. If the theoretical remaining thawing time and the initial remaining thawing time are not approximately equal, then the radio frequency thawing device is controlled to thaw the food to be thawed according to the theoretical remaining thawing time, wherein a preset difference is used to determine whether the approximate equality is satisfied.

9. A food defrosting device, characterized in that, A radio frequency defrosting device, applicable to refrigeration equipment with radio frequency defrosting function, includes a radio frequency power amplification circuit and a tuning circuit. The radio frequency power amplification circuit is used to output radio frequency power to the tuning circuit. The device includes: The food information acquisition module is used to acquire target food information of the food to be thawed through sensors installed in the refrigeration equipment. The target food information includes the food type, food quality and initial temperature of the food to be thawed. The radio frequency defrosting parameter determination module is used to determine the radio frequency defrosting parameters corresponding to the target food information based on the target food information, wherein the radio frequency defrosting parameters include the initial defrosting time; The control module is used to control the radio frequency defrosting device to operate with the radio frequency defrosting parameters to defrost the food to be defrosted. The module includes: acquiring the mismatch frequency of the tuning circuit at the initial stage of the initial defrosting time, as the initial mismatch frequency, where the mismatch frequency characterizes the frequency at which the tuning circuit is triggered for impedance matching; determining the mismatch frequency of the tuning circuit when the food to be defrosted undergoes a phase transition, as the reference mismatch frequency; and acquiring the actual time consumed by the tuning circuit to change from the initial mismatch frequency to the reference mismatch frequency; based on the initial mismatch frequency and the reference mismatch frequency... The radio frequency defrosting device is used to determine the theoretical defrosting time required to defrost the food to be defrosted, based on the frequency and the actual consumption time. The difference between the initial defrosting time and the actual consumption time is determined as the initial remaining defrosting time, and the difference between the theoretical defrosting time and the actual consumption time is determined as the theoretical remaining defrosting time. If the theoretical remaining defrosting time and the initial remaining defrosting time are not approximately equal, the radio frequency defrosting device is controlled to defrost the food to be defrosted according to the theoretical remaining defrosting time. The approximate equality is determined by a preset difference value.

10. A refrigeration device, characterized in that, include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the program, implements the method as described in any one of claims 1-8.

11. A computer-readable storage medium, characterized in that, It stores a computer program that, when executed by a processor, implements the steps of the method according to any one of claims 1-8.

Images