CN111322811A - Refrigerator freshness detection device and method - Google Patents
Refrigerator freshness detection device and method Download PDFInfo
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- CN111322811A CN111322811A CN202010270782.6A CN202010270782A CN111322811A CN 111322811 A CN111322811 A CN 111322811A CN 202010270782 A CN202010270782 A CN 202010270782A CN 111322811 A CN111322811 A CN 111322811A
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- refrigerator
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- freshness
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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
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/042—Air treating means within refrigerated spaces
- F25D17/045—Air flow control arrangements
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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
- F25D29/00—Arrangement or mounting of control or safety devices
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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
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/04—Treating air flowing to refrigeration compartments
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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
- F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
- F25D2400/36—Visual displays
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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
- F25D2500/00—Problems to be solved
- F25D2500/06—Stock management
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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
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
Abstract
The invention discloses a refrigerator freshness detection device and a method thereof. In the invention: the detection module and the odor removal module are fixedly arranged in an air duct of the refrigerator or arranged in a refrigerator chamber through a fixing box; the collecting unit collects the gas information in the refrigerator and transmits the gas information to the control unit, and the control unit controls the display unit to display a processing result; the odor removal module is used for adsorbing odor in the refrigerator; the two ends of the fixed box are respectively provided with an air inlet and an air outlet; the detection module and the odor removal module are fixed in an air duct between the air inlet and the air outlet. According to the refrigerator, the gas sensor is arranged to sense gas data information in the refrigerator, and the display unit is used for displaying a gas detection result so as to prompt a user about food freshness in time; the detection method is optimized through the matching of the detection module and the odor removal module; real-time fluctuation is reduced, and left-right fluctuation of a threshold range is avoided; and when the peculiar smell is dissipated, the descending degree is accelerated, and the latest freshness data of the food in the refrigerator is rapidly displayed.
Description
Technical Field
The invention belongs to the technical field of refrigerators, and particularly relates to a refrigerator freshness detection device and a refrigerator freshness detection method.
Background
With the increasingly prominent food safety problem, users have more and more requirements on food safety detection functional products, but the traditional food safety detection technology consumes long time and needs professional mechanisms to destroy food for detection. With the development of intelligent technology, rapid, convenient and accurate detection methods for food safety have attracted industrial attention. The refrigerator, as a food storage terminal, is more required to be a safety gate on the tongue tip of a user. The refrigerator trade is applied to the refrigerator with the smell sensor technique, and the user can concern refrigerator food freshness in real time, combines refrigerator intelligence APP, increases intelligent refrigerator's experience and feels.
However, the current gas sensor is applied to the refrigerator and has some problems: the signal fluctuation is large under the influence of temperature, humidity and wind circulation in the refrigerator; a smell removal module is arranged in the refrigerator, smell released by food decay can be detected only by slow accumulation, and the signal value of a fresh-to-decay sensor slowly rises; based on the food storage process, residual smell in the air duct can not be eliminated quickly, so that the smell is reduced slowly after the rotten food is taken out.
Disclosure of Invention
The invention aims to provide a refrigerator freshness detection device and a refrigerator freshness detection method, wherein a gas sensor is arranged to sense gas data information in a refrigerator, and a display unit is used for displaying a gas detection result in time so as to remind a user of food freshness in time; by matching the detection module with the odor removal module and optimizing the detection method, real-time fluctuation can be reduced, and fluctuation of a threshold range from side to side is avoided; and when the peculiar smell is dissipated, the descending degree is accelerated, and the latest freshness data of the food in the refrigerator is rapidly displayed.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a refrigerator freshness detection device and a method thereof, wherein the refrigerator freshness detection device comprises a detection module and a smell removal module, wherein the detection module and the smell removal module are fixedly arranged in an air duct of a refrigerator or arranged in a refrigerator compartment through a fixing box;
the detection module comprises an acquisition unit, a control unit and a display unit; the collecting unit collects the gas information in the refrigerator and transmits the gas information to the control unit, and the control unit processes the received data; the control unit controls the display unit to display a processing result;
the odor removal module is used for adsorbing odor in the refrigerator; the odor removal module adopts a metal ion honeycomb structure;
an air inlet and an air outlet are respectively arranged at two ends of the fixed box; the detection module and the odor removal module are fixed in an air duct between the air inlet and the air outlet; and a fan is also arranged between the detection module and the air inlet.
Further, the acquisition unit adopts a gas sensor; the collection unit is arranged at an air return port of the refrigerator air duct.
Furthermore, the display unit is an indicator light, a buzzer or a display screen, and the corruption condition of the food in the refrigerator is prompted to a user through the on-off of the indicator light or the vibration amplitude of the buzzer.
A refrigerator freshness detection method comprises the following steps:
step one, setting the time for detecting t (t is more than 0) by a gas sensor as a test unit, and updating the reference value of each test unit in real time;
step two, setting a reference value detected by the gas sensor as R0, actual acquired data at the current stage as a1, a2 and … an, and setting a weighted average value of the actual acquired data as R:
when R is larger than or equal to R0, setting the reference value of the next stage to be R0;
when R is less than R0, setting the reference value of the next stage as R0 ═ R;
step three, setting the threshold value of freshness and putrefaction of the refrigerator food as W:
when the actual acquired data of the current stage continuously rises within the time T, the reference value R0 is set as W, and when m points of the actual acquired data continuously fall, the reference value R0 is reset;
wherein, when the actual collected data of the current stage continuously decrease within the time T, the reference value R0 is set as W, and when the actual collected data m points continuously increase, the reference value R0 is reset.
The invention has the following beneficial effects:
according to the refrigerator, the gas sensor is arranged to sense gas data information in the refrigerator, and a gas detection result is displayed in time through the display unit, so that a user is reminded of food freshness in time; by matching the detection module with the odor removal module and optimizing the detection method, real-time fluctuation can be reduced, and fluctuation of a threshold range from side to side is avoided; and when the peculiar smell is dissipated, the descending degree is accelerated, and the latest freshness data of the food in the refrigerator is rapidly displayed.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a refrigerator freshness detecting apparatus;
FIG. 2 is a schematic structural view of the fixing box;
fig. 3 is a diagram illustrating the results of a refrigerator freshness detection method.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.
Referring to fig. 1, the invention relates to a refrigerator freshness detection device, which comprises a detection module 3 and a smell removal module 4, wherein the detection module 3 and the smell removal module 4 are fixedly arranged in a refrigerator air duct 1 or arranged in a refrigerator compartment through a fixing box 5;
the detection module 3 comprises an acquisition unit, a control unit and a display unit; the acquisition unit adopts a gas sensor; the acquisition unit is arranged at an air return port 2 of the refrigerator air duct 1; the collecting unit collects the gas information in the refrigerator and transmits the gas information to the control unit, and the control unit processes the received data; the control unit controls the display unit to display the processing result; the display unit is an indicator lamp, a buzzer or a display screen, and prompts the user of the corruption condition of food in the refrigerator through the on-off of the indicator lamp or the vibration amplitude of the buzzer; the odor removal module 4 is used for adsorbing odor in the refrigerator; the odor removal module 4 adopts a metal ion honeycomb structure;
as shown in fig. 2, an air inlet 6 and an air outlet 7 are respectively arranged at two ends of the fixed box 5; the detection module 3 and the odor removal module 4 are fixed in an air duct between the air inlet 6 and the air outlet 7; a fan 8 is also arranged between the detection module 3 and the air inlet 6.
As shown in fig. 3, a method for detecting freshness of a refrigerator includes the following steps:
step one, setting the time for detecting t (t is more than 0) by a gas sensor as a test unit, and updating the reference value of each test unit in real time;
step two, setting a reference value detected by the gas sensor as R0, actual acquired data at the current stage as a1, a2 and … an, and setting a weighted average value of the actual acquired data as R:
when R is larger than or equal to R0, setting the reference value of the next stage to be R0;
when R is less than R0, setting the reference value of the next stage as R0 ═ R;
step three, setting the threshold value of freshness and putrefaction of the refrigerator food as W:
when the actual acquired data of the current stage continuously rises within the time T, the reference value R0 is set as W, and when m points of the actual acquired data continuously fall, the reference value R0 is reset;
wherein, when the actual collected data of the current stage continuously decrease within the time T, the reference value R0 is set as W, and when the actual collected data m points continuously increase, the reference value R0 is reset.
The first embodiment is as follows:
the refrigerator is a relatively sealed box body, the fresh odor base number of the refrigerator is changed after the refrigerator is used for a period of time or the climate environment of different regions is different, for example, the base number of fresh air of mountainous regions and cities is greatly different, and the fresh odor base number of the new refrigerator and a clean refrigerator after the refrigerator is used for a period of time and is scrubbed is also changed. If the refrigerator freshness detection module adopts a fixed initial value of gas, the fresh detection in different areas and different stages of the refrigerator is inaccurate. For example, the concentration of volatile gas in a new refrigerator is low, the initial value of the detection module is low, even if the refrigerator is cleaned after being used for a period of time, odor remains on the inner walls of the air duct and the refrigerator liner, the odor concentration of the refrigerator is increased relative to the fresh refrigerator, the odor slightly released by food reaches the detection threshold value, the risk of alarming even if the food in the refrigerator is not rotten occurs, and in order to solve the phenomenon, the datum line needs to be moved down. Therefore, the time for detecting t (t > 0) by the gas sensor is set as a test unit, and the reference value of each unit is updated in real time;
the method is that when the weighted average value R of the signal values of the time t of the refrigerator freshness detection module is greater than the reference value R0, the reference value of the next time t is still R0; when the weighted average value R of the signal values of the time t of the refrigerator freshness detection module is smaller than the reference value R0, the reference value R0 of the next time t is moved downwards, and R0 is equal to R.
Setting a threshold value W for freshness and putrefaction of refrigerator food, if actual collected data at the current stage continuously rise within T time, indicating that the concentration of peculiar smell is increasing, probably in the gradual putrefaction process of the food, because a smell removal module is arranged in an air duct of the refrigerator, and the air circulation of the refrigerator is not beneficial to the enrichment of peculiar smell in the putrefaction process of the food, in order to prevent putrefaction lag alarm, setting a reference value R0 as W, and timely alarming to remind a user of the freshness and change condition of the food when a sensor collection value is greater than the threshold value; when the actually collected data continuously decrease for m points, at the moment, the rotten food is taken out possibly, the deodorization has a lag time, in order to improve the experience of the user, the reference value R0 is reset at the moment, the reference value R0 is smaller than the detection threshold value, the system displays the freshness of the refrigerator food, and vice versa.
The detection module 3 adopting the detection method is applied to the refrigerator and is arranged at the air return opening 2 of the refrigerator, so that the fresh condition of food in a refrigerator compartment can be detected in time. The detection module 3 comprises an acquisition unit, a control unit and a display unit, wherein the display unit can be a refrigerator display screen APP, a mobile phone APP, an indoor marquee of a refrigerator or a buzzer on a display panel; the deodorizing module 4 is arranged in the refrigerator air duct 1, and can remove the refrigerator peculiar smell in time when detecting that the concentration of the refrigerator peculiar smell is higher. Detection module 3 can also combine fan 8 to install at refrigerator room indoor top or lateral wall through fixed box 5 with removing flavor module 4, and the circulation of room indoor air in fixed box 5 is accelerated through the fan from module air intake 6, through detection module 3 with remove flavor module 4 after from air outlet 7 air-out to in time detect and get rid of refrigerator room indoor peculiar smell.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (4)
1. The utility model provides a refrigerator freshness detection device, includes detection module (3) and removes flavor module (4), its characterized in that: the detection module (3) and the odor removal module (4) are fixedly arranged in the refrigerator air duct (1) or arranged in a refrigerator compartment through a fixing box (5);
the detection module (3) comprises an acquisition unit, a control unit and a display unit; the collecting unit collects the gas information in the refrigerator and transmits the gas information to the control unit, and the control unit processes the received data; the control unit controls the display unit to display a processing result;
the smell removal module (4) is used for adsorbing peculiar smell gas in the refrigerator; the odor removal module (4) adopts a metal ion honeycomb structure;
an air inlet (6) and an air outlet (7) are respectively arranged at two ends of the fixed box (5); the detection module (3) and the odor removal module (4) are fixed in an air channel between the air inlet (6) and the air outlet (7); and a fan (8) is also arranged between the detection module (3) and the air inlet (6).
2. The refrigerator freshness detection device according to claim 1, wherein the collection unit employs a gas sensor; the acquisition unit is arranged at an air return opening (2) of the refrigerator air duct (1).
3. The refrigerator freshness detection device according to claim 1, wherein the display unit is an indicator lamp or a buzzer or a display screen.
4. A refrigerator freshness detection method according to any one of claims 1 to 3, comprising the steps of:
step one, setting the time for detecting t (t is more than 0) by a gas sensor as a test unit, and updating the reference value of each test unit in real time;
step two, setting a reference value detected by the gas sensor as R0, actual acquired data at the current stage as a1, a2 and … an, and setting a weighted average value of the actual acquired data as R:
when R is larger than or equal to R0, setting the reference value of the next stage to be R0;
when R is less than R0, setting the reference value of the next stage as R0 ═ R;
step three, setting the threshold value of freshness and putrefaction of the refrigerator food as W:
when the actual acquired data of the current stage continuously rises within the time T, the reference value R0 is set as W, and when m points of the actual acquired data continuously fall, the reference value R0 is reset;
wherein, when the actual collected data of the current stage continuously decrease within the time T, the reference value R0 is set as W, and when the actual collected data m points continuously increase, the reference value R0 is reset.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010270782.6A CN111322811A (en) | 2020-04-08 | 2020-04-08 | Refrigerator freshness detection device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010270782.6A CN111322811A (en) | 2020-04-08 | 2020-04-08 | Refrigerator freshness detection device and method |
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| CN111322811A true CN111322811A (en) | 2020-06-23 |
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| CN202010270782.6A Pending CN111322811A (en) | 2020-04-08 | 2020-04-08 | Refrigerator freshness detection device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114739109A (en) * | 2022-04-27 | 2022-07-12 | 长虹美菱股份有限公司 | Control method of fresh-keeping refrigerator |
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| CN114739109A (en) * | 2022-04-27 | 2022-07-12 | 长虹美菱股份有限公司 | Control method of fresh-keeping refrigerator |
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