CN115014025B - Colony monitoring method and device in deep freezing mode and refrigerator - Google Patents

Colony monitoring method and device in deep freezing mode and refrigerator Download PDF

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Publication number
CN115014025B
CN115014025B CN202210655614.8A CN202210655614A CN115014025B CN 115014025 B CN115014025 B CN 115014025B CN 202210655614 A CN202210655614 A CN 202210655614A CN 115014025 B CN115014025 B CN 115014025B
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food
protein activity
colony
temperature
activity change
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CN115014025A (en
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黄扬杰
辛海亚
陈艳君
李琦
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/006—Safety devices

Abstract

The invention discloses a colony monitoring method and device in a deep freezing mode and a refrigerator. Wherein the method comprises the following steps: after the food is identified to be placed in the deep freezing compartment, starting a deep freezing mode; gradually reducing the temperature of the intermediate room to a preset temperature in a deep freezing mode, and recording protein activity change data of the food during the period; and determining the colony type of the surface of the food according to the protein activity change data so as to identify whether harmful colonies exist on the surface of the food. The invention can actively monitor food in the refrigerator, identify the colony type on the surface of the food, and timely inform a user after identifying harmful colonies, thereby ensuring the quality of the stored food in the refrigerator and avoiding the risk of 'entering from the mouth' of the user.

Description

Colony monitoring method and device in deep freezing mode and refrigerator
Technical Field
The invention relates to the technical field of refrigerators, in particular to a colony monitoring method and device in a deep freezing mode and a refrigerator.
Background
With the increasing importance of people on daily food safety. Bacterial viruses and the like are not completely inactivated at low temperature, and refrigerating frozen products becomes a common way for bacterial virus transmission.
Since the main living substance of viruses and various bacteria is protein, the biological characteristics of the protein determine that the protein cannot be completely inactivated at low temperature, but the protein can generate obvious phenomenon of activity reduction at lower temperature, and at the moment, the propagation and transmission speed of the viruses and various bacteria can be obviously inhibited.
The deep freezing mode of the refrigerator can reach below minus 30 ℃ generally, and under the environment, the conditions of inhibiting the propagation and transmission of viruses and bacteria can be met. However, during the storage and transportation of refrigerated and frozen foods, residues of viruses and harmful bacteria may occur. Therefore, even in the deep freezing mode of the refrigerator, absolute safety of the stored food cannot be ensured.
Aiming at the problem of how to effectively ensure food safety of a refrigerator in a deep freezing mode in the prior art, no effective solution is proposed at present.
Disclosure of Invention
The embodiment of the invention provides a colony monitoring method and device in a deep freezing mode and a refrigerator, and aims to solve the problem of how to effectively guarantee food safety of the refrigerator in the deep freezing mode in the prior art.
In order to solve the technical problems, the invention provides a colony monitoring method in a deep freezing mode, wherein the method comprises the following steps: after the food is identified to be placed in the deep freezing compartment, starting a deep freezing mode; gradually reducing the temperature of the intermediate room to a preset temperature in a deep freezing mode, and recording protein activity change data of the food during the period; and determining the colony type of the surface of the food according to the protein activity change data so as to identify whether harmful colonies exist on the surface of the food.
Further, the temperature of the intermediate room gradually decreases to a preset temperature in the deep-freezing mode, during which the protein activity change data of the food is recorded, comprising: record the temperature T of the compartment when the deep freeze mode is turned on 0 And the protein activity value IU of the food at the room temperature 0 The method comprises the steps of carrying out a first treatment on the surface of the Recording a plurality of room temperatures T during the gradual decrease of the room temperature 1 、T 2 ……T n And the amount of protein activity IU of the food at each compartment temperature 1 、IU 2 ……IU n The method comprises the steps of carrying out a first treatment on the surface of the According to a plurality of room temperatures T 0 、T 1 、T 2 ……T n And a corresponding plurality of protein activity values IU 1 、IU 2 ……IU n Obtaining protein activity change data of the food; wherein n is a natural number.
Further, the protein activity value of the food product is calculated by: the thermal movement rate of molecules on the surface of the food is monitored, and the protein activity value is determined according to the thermal movement rate of the molecules.
Further, determining colony species on the surface of the food product based on the protein activity change data, comprising: generating a protein activity change IU-T curve according to the protein activity change data; comparing the protein activity change IU-T curve with a preset protein activity change curve of various colony types, and determining the colony types on the surface of the food according to the comparison result.
Further, comparing the protein activity change IU-T curve with a preset protein activity change curve of various colony types, and determining the colony types on the surface of the food according to the comparison result, wherein the method comprises the following steps: comparing the protein activity change IU-T curve with a preset protein activity change curve of each colony type by adopting a quadratic derivative fitting comparison method; if the comparison shows that the curves remain identical, the colony type on the surface of the food product can be determined.
Further, determining colony types on the surface of the food product based on the protein activity change data to identify whether harmful colonies exist on the surface of the food product, comprising: after determining the colony type of the food surface, judging whether the colony type contains harmful colonies or not; if yes, a prompt message is sent to a user, and the temperature of the deep freezing compartment is controlled to be the preset minimum temperature; if not, sending food detection qualified information to a user, and increasing the temperature of the deep freezing compartment.
The invention also provides a colony monitoring device in the deep freezing mode, wherein the device comprises: the starting module is used for starting a deep freezing mode after recognizing that food is placed in the deep freezing compartment; a recording module for gradually reducing the temperature of the intermediate room to a preset temperature in a deep freezing mode, and recording protein activity change data of the food during the period; and the processing module is used for determining the colony type of the surface of the food according to the protein activity change data so as to identify whether harmful colonies exist on the surface of the food.
Further, the processing module includes: a judging unit for judging whether the colony type contains harmful colonies or not after determining the colony type on the surface of the food; the first processing unit is used for sending prompt information to a user and controlling the temperature of the deep freezing compartment to be a preset minimum temperature under the condition that the judging result of the judging unit is yes; and the second processing unit is used for sending food detection qualified information to a user and increasing the temperature of the deep freezing compartment under the condition that the judging result of the judging unit is negative.
The invention also provides a refrigerator, wherein the refrigerator comprises the colony monitoring device in the deep freezing mode.
The invention also provides a computer readable storage medium having stored thereon a computer program, wherein the program when executed by a processor implements a method as described above.
By applying the technical scheme of the invention, the food in the refrigerator can be actively monitored, the colony type of the surface of the food is identified, and the user is timely notified after the harmful colony is identified, so that the quality of the stored food in the refrigerator is ensured, and the risk of 'illness entering from the mouth' of the user is avoided.
Drawings
FIG. 1 is a flow chart of a colony monitoring method in deep freeze mode according to an embodiment of the invention;
FIG. 2 is a graphical representation of protein activity profiles of different colony types stored in a database according to an embodiment of the present invention;
FIG. 3 is a flow chart of a method of biological monitoring in deep freeze mode according to an embodiment of the invention;
fig. 4 is a block diagram of a colony monitoring device in deep freeze mode according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, the "plurality" generally includes at least two.
It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrase "if determined" or "if detected (stated condition or event)" may be interpreted as "when determined" or "in response to determination" or "when detected (stated condition or event)" or "in response to detection (stated condition or event), depending on the context.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a commodity or device comprising such element.
Alternative embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Example 1
FIG. 1 is a flow chart of a colony monitoring method in deep freeze mode according to an embodiment of the invention, as shown in FIG. 1, the method comprising the steps of:
step S101, after the food is identified to be placed in the deep freezing compartment, a deep freezing mode is started.
Step S102, the temperature of the intermediate chamber gradually decreases to a preset temperature in the deep freezing mode, and the protein activity change data of the food is recorded during the period. It should be noted that, in general, the preset temperature is lower than the conventional set temperature of the deep freezing mode, so that a falling interval of the room temperature can be ensured, thereby facilitating the collection of related data.
Step S103, determining colony types on the surface of the food according to the protein activity change data so as to identify whether harmful colonies exist on the surface of the food. The colony species include various bacteria, viruses, etc., such as lactic acid bacteria, helicobacter pylori, coronavirus, staphylococcus aureus, salmonella, listeria monocytogenes, escherichia coli, vibrio parahaemolyticus, etc. The different kinds of colonies may be beneficial bacteria or harmful bacteria, so that after the kinds of the colonies on the surface of the food are determined, it is further confirmed whether the colonies on the surface of the food are harmful colonies.
According to the embodiment, the food in the refrigerator can be actively monitored, the colony type on the surface of the food is identified, the user is timely notified after the harmful colony is identified, the quality of the stored food in the refrigerator is guaranteed, and the risk of 'illness entering' of the user is avoided.
During the period that the temperature of the intermediate room gradually decreases to a preset temperature in the deep freezing mode, recording protein activity change data of food, wherein the method specifically comprises the following steps: record the temperature T of the compartment when the deep freeze mode is turned on 0 And the protein activity value IU of the food at the room temperature 0 . Recording a plurality of room temperatures T during the gradual decrease of the room temperature 1 、T 2 ……T n And the amount of protein activity IU of the food at each compartment temperature 1 、IU 2 ……IU n . Then, according to the plurality of room temperatures T 0 、T 1 、 T 2 ……T n And a corresponding plurality of protein activity values IU 1 、IU 2 ……IU n Obtaining protein activity change data of food; wherein n is a natural number.
The protein activity value of the food was calculated by: the rate of molecular thermal motion of the surface of the food product is monitored and the amount of protein activity is determined based on the rate of molecular thermal motion. An optical infrared detection probe with higher precision can be arranged in the deep freezing chamber, and the probe has the following functions: the rate of molecular thermal movement of the surface of the food product is monitored. Specifically, the detection probe carries out infrared monitoring on the food in the position range, the number of molecules passing through the probe in unit time is recorded, and the thermal movement rate of the molecules is obtained. And then, taking the molecular thermal movement rate as a reference value to characterize the protein activity value of the food surface.
The protein activity change data may be a change rate of the protein activity value with the room temperature, and the change rate is compared with a preset change rate of various colony types, and the colony types can be determined if the values are relatively close (for example, the value difference is smaller than the preset difference). Based on this, the colony type can be determined intuitively and accurately.
Alternatively, a protein activity change IU-T curve generated based on a plurality of compartment temperatures and a plurality of protein activity values may be compared with a predetermined protein activity change curve of various colony types, and the colony type on the surface of the food may be determined based on the comparison result. FIG. 2 is a schematic diagram showing protein activity change curves of different colony types stored in a database, wherein the curves represent protein activity change conditions by taking the protein activity value as the vertical axis and taking the room temperature as the horizontal axis. FIG. 2 is a schematic illustration of Staphylococcus aureus, salmonella, escherichia coli, listeria monocytogenes, and other common colony species included in the database. In the process of curve comparison, specifically, a quadratic derivative fitting comparison method can be adopted to compare the protein activity change IU-T curve with a preset protein activity change curve of each colony type, and if the comparison result is that the curves keep identical, the colony type on the surface of the food can be determined. The colony type on the surface of the food may be determined as one type or a plurality of types.
The control panel of the refrigerator can store the protein activity information of common bacteria and viruses in nature, and the protein activity information records the trend of the protein activity value of the organisms along with the temperature change, so as to form a biological database. In the case of staphylococcus aureus, the protein activity value is optimal at 37 ℃, and the protein activity value is reduced and the molecular weight is reduced with the reduction of temperature (low temperature below zero) or the increase of temperature (high temperature).
After the colony type of the food surface is determined, judging whether the colony type contains harmful colonies, if yes, sending prompt information to a user, and controlling the temperature of the deep freezing compartment to be the preset minimum temperature, so that the growth and the diffusion of bacteria and viruses are inhibited to the greatest extent. And adjusting the temperature of the deep freezing chamber to be a preset temperature until the food is taken out. If not, the food detection qualified information is sent to the user, and the temperature of the deep freezing chamber can be properly increased to ensure the activity of the food.
Example 2
In this embodiment, a detailed description is given of a biological monitoring method in a deep freeze mode, and fig. 3 is a flowchart of the biological monitoring method in the deep freeze mode according to an embodiment of the present invention, as shown in fig. 3, and the flowchart includes the following steps:
step S301, after the food is identified to be placed in the deep freezing compartment, a deep freezing mode is started, and a biological monitoring function is started. When the biological monitoring function is started, the food freezing device can be automatically triggered, and can remind a user after recognizing that food is placed in the deep freezing chamber, and the user can select whether to start or not.
The refrigerator is generally internally provided with an independent deep freezing compartment, and the characteristics of the deep freezing compartment are as follows: the temperature of the compartment can be freely adjusted, the temperature adjusting range is wider, and the temperature adjusting range is generally an adjustable temperature range of minus 6 ℃ to minus 40 ℃.
Step S302, detecting a food storage position.
For example, the food storage position is detected by an infrared probe having a scanning function, and the space in which the protein activity is reacted is set as the food storage position by default by scanning the entire space inside the deep freezing compartment.
Step S303, obtaining the current chamber temperature T 0 Determining the protein activity value IU of the food at the current temperature 0 。
In step S304, the temperature of the chamber is adjusted to be gradually reduced to the lowest temperature in the adjustable temperature range.
Step S305, inter-chamber temperature adjustment periodBetween, collect a plurality of room temperatures T 1 、T 2 ……T n Collecting the protein activity value IU at each room temperature 1 、IU 2 ……IU n . n is a natural number and represents the number of acquired compartment temperature data.
Shown in Table 1 are the acquired compartment temperature data and protein activity magnitude data.
TABLE 1
Temperature (temperature) Protein Activity magnitude
T 0 IU 0
T 1 IU 1
T 2 IU 2
... ...
T n IU n
Step S306, forming a change trend IU-T curve of the protein activity value decreasing with the room temperature according to the data.
Step S307, comparing IU-T curve with preset protein activity change curve of various colony types, and determining colony types on food surface. Specifically, the curve comparison can be performed by adopting a quadratic derivative fitting comparison, after the two curves are subjected to quadratic derivative, the curves are kept identical, namely, the curves of the same colony can be judged, the derivative is obtained through the slope of the curves, and the second derivative is obtained through direct computer calculation according to the function of the derivative.
Step S308, judging whether toxic bacterial colonies exist on the surface of the food, if so, executing step S309, and if not, executing step S310.
Step S309, sending a food ingredient detection report to the user and alerting the user to possible hazards, maintaining the minimum temperature operation of the adjustable temperature range, e.g. -30 ℃.
Step S310, a prompt of 'food detection qualified' is sent to the user, and the temperature of the compartment can be properly increased, for example, the compartment is kept running at-18 ℃.
According to the embodiment, the colony type of the food surface in the deep freezing compartment can be timely and accurately identified, if high-infectivity or high-pathogenicity bacteria or viruses exist in the food, the refrigerator can send a food component detection report to a user through WIFI, remind the user of possible harm, keep the compartment temperature at a preset minimum temperature before the food is taken out, and reduce the activity of the compartment temperature to play a role in blocking transmission. If there are no significant detrimental colony species in the food, a "food-check-up" cue is sent to the user and the compartment temperature can be suitably raised, e.g., held at-18℃, before the food is removed, thereby preserving food activity.
In the embodiment, biological species detection is carried out on food put into the refrigerator by a user, and protein activity is characterized by detecting the thermal movement rate of molecules on the surface of the food. And judging the colony types on the surface of the food by the protein activity change trend at different room temperatures. When a toxic bacterial colony is identified, the harmful substances are reminded, and the risk of 'disease entering from the mouth' of a user is avoided.
Example 3
Corresponding to the colony monitoring method in the deep freeze mode described in fig. 1, the embodiment provides a colony monitoring device in the deep freeze mode, as shown in a structural block diagram of the colony monitoring device in the deep freeze mode in fig. 4, where the device includes:
a starting module 10, configured to start a deep freezing mode after recognizing that the food is placed in the deep freezing compartment;
a recording module 20 for gradually decreasing the temperature of the intermediate room to a preset temperature in the deep freezing mode, during which the protein activity change data of the food is recorded;
a processing module 30 for determining colony types on the surface of the food based on the protein activity change data to identify whether harmful colonies are present on the surface of the food.
Preferably, the processing module 30 includes: a judging unit for judging whether the colony type contains harmful colonies after determining the colony type on the surface of the food; the first processing unit is used for sending prompt information to a user and controlling the temperature of the deep freezing compartment to be the preset minimum temperature under the condition that the judging result of the judging unit is yes; and the second processing unit is used for sending food detection qualified information to a user and increasing the temperature of the deep freezing compartment under the condition that the judging result of the judging unit is negative.
According to the embodiment, the food in the refrigerator can be actively monitored, the colony type on the surface of the food is identified, the user is timely notified after the harmful colony is identified, the quality of the stored food in the refrigerator is guaranteed, and the risk of 'illness entering' of the user is avoided.
The embodiment also provides a refrigerator, which comprises the colony monitoring device in the deep freezing mode.
Example 4
The embodiment of the invention provides software for executing the technical scheme described in the embodiment and the preferred implementation mode.
Embodiments of the present invention provide a non-volatile computer storage medium having stored thereon computer-executable instructions that are operable to perform the colony monitoring method in deep freeze mode of any of the method embodiments described above.
The above-described software is stored in the above-described storage medium including, but not limited to: optical discs, floppy discs, hard discs, erasable memory, etc.
The product can execute the method provided by the embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method. Technical details not described in detail in this embodiment may be found in the methods provided in the embodiments of the present invention.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (9)

1. A method of colony monitoring in deep freeze mode, the method comprising:
after the food is identified to be placed in the deep freezing compartment, starting a deep freezing mode;
gradually reducing the temperature of the intermediate room to a preset temperature in a deep freezing mode, and recording protein activity change data of the food during the period;
determining colony types on the surface of the food according to the protein activity change data so as to identify whether harmful colonies exist on the surface of the food;
wherein determining colony species on the surface of the food product based on the protein activity change data comprises: generating a protein activity change IU-T curve according to the protein activity change data; comparing the protein activity change IU-T curve with a preset protein activity change curve of various colony types, and determining the colony types on the surface of the food according to a comparison result; IU is the protein activity value, T is the compartment temperature.
2. The method of claim 1, wherein the temperature of the intermediate chamber gradually decreases to a preset temperature in the deep-frozen mode, during which protein activity change data of the food product is recorded, comprising:
record the temperature T of the compartment when the deep freeze mode is turned on 0 And the protein activity value IU of the food at the room temperature 0 ；
Recording a plurality of room temperatures T during the gradual decrease of the room temperature 1 、T 2 ……T n And the amount of protein activity IU of the food at each compartment temperature 1 、IU 2 ……IU n ；
According to a plurality of room temperatures T 0 、T 1 、T 2 ……T n And a corresponding plurality of protein activity values IU 1 、IU 2 ……IU n Obtaining protein activity change data of the food; wherein n is a natural number.
3. The method of claim 2, wherein the protein activity magnitude of the food product is calculated by:
the thermal movement rate of molecules on the surface of the food is monitored, and the protein activity value is determined according to the thermal movement rate of the molecules.
4. The method of claim 1, wherein comparing the protein activity change IU-T curve with a predetermined protein activity change curve for each colony type, and determining the colony type on the surface of the food product based on the comparison result, comprises:
comparing the protein activity change IU-T curve with a preset protein activity change curve of each colony type by adopting a quadratic derivative fitting comparison method;
if the comparison shows that the curves remain identical, the colony type on the surface of the food product can be determined.
5. The method of claim 1, wherein determining colony species on the surface of the food product based on the protein activity change data to identify the presence of detrimental colonies on the surface of the food product comprises:
after determining the colony type of the food surface, judging whether the colony type contains harmful colonies or not;
if yes, a prompt message is sent to a user, and the temperature of the deep freezing compartment is controlled to be the preset minimum temperature;
if not, sending food detection qualified information to a user, and increasing the temperature of the deep freezing compartment.
6. A colony monitoring device in deep freeze mode for implementing the colony monitoring method in deep freeze mode according to any of claims 1 to 5, the device comprising:
the starting module is used for starting a deep freezing mode after recognizing that food is placed in the deep freezing compartment;
a recording module for gradually reducing the temperature of the intermediate room to a preset temperature in a deep freezing mode, and recording protein activity change data of the food during the period;
and the processing module is used for determining the colony type of the surface of the food according to the protein activity change data so as to identify whether harmful colonies exist on the surface of the food.
7. The apparatus of claim 6, wherein the processing module comprises:
a judging unit for judging whether the colony type contains harmful colonies or not after determining the colony type on the surface of the food;
the first processing unit is used for sending prompt information to a user and controlling the temperature of the deep freezing compartment to be a preset minimum temperature under the condition that the judging result of the judging unit is yes;
and the second processing unit is used for sending food detection qualified information to a user and increasing the temperature of the deep freezing compartment under the condition that the judging result of the judging unit is negative.
8. A refrigerator comprising the colony monitoring device in deep freeze mode of claim 6 or 7.
9. A computer readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, implements the method according to any one of claims 1 to 5.
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