CN106766648A - For detecting the method that whether temperature anomaly article is put into refrigerator - Google Patents
For detecting the method that whether temperature anomaly article is put into refrigerator Download PDFInfo
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- CN106766648A CN106766648A CN201611047002.1A CN201611047002A CN106766648A CN 106766648 A CN106766648 A CN 106766648A CN 201611047002 A CN201611047002 A CN 201611047002A CN 106766648 A CN106766648 A CN 106766648A
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- temperature
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- storage space
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Classifications
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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
- F25D29/005—Mounting of control 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
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/008—Alarm devices
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention provides a kind of for detecting the method that whether temperature anomaly article is put into refrigerator, wherein refrigerator includes：At least one infrared sensor that inside is divided into the casing of at least one storage space and is sensed to the temperature of each storage space respectively.The method includes：After door body unlatching, each infrared sensor collecting temperature value；If currently the temperature value of collection is more than default mutation value to any infrared sensor with the absolute value of the difference of the temperature value of last collection, then obtain the first temperature value and corresponding times of collection that the infrared sensor is gathered before it may be put into temperature anomaly article, and the second temperature value that is gathered after it may be put into temperature anomaly article and corresponding times of collection；Second temperature changing value is calculated according to Δ TA=(ln (m) ln (n)) * Q/S；And judge whether temperature anomaly article is put into storage space according to the first temperature value, second temperature value and second temperature changing value.Whether the present invention can relatively accurately judge be put into Superheat Food in a certain storage space.
Description
Technical field
It is more particularly to a kind of for detecting in refrigerator whether be put into temperature anomaly thing the present invention relates to refrigerating equipment
The method of product.
Background technology
The temperature that conventional refrigerator is generally sensed around its position using the temperature sensor for being arranged in chamber interior between storing
Degree, using the temperature as refrigeration control foundation.When carrying out refrigerator control using this control mode, in temperature sensor measurement
Temperature be higher than preset value when, refrigerator start refrigeration.However, storing compartment put thing dividing plate be divided into it is multiple relatively independent
In the case of storage space, if temperature hot food higher is put into a certain storage space of refrigerator by user, on the one hand, hot food
Be put into the temperature that can influence storage space where it, so as to can obtain the various bacteriums being originally present in refrigerator inside food
To grow faster, it is unfavorable for the healthy and safe preservation of food；On the other hand, if integrally carried out to storing compartment indiscriminate
Refrigeration, then can cause waste of energy, while the storage space cooling for being put into hot food can be caused slow.
Additionally, in refrigerator open, being put into temperature hot food higher can cause storage space temperature change, and not be put into
The storage space of hot food is also due to heat exchange causes temperature to become caused by free convection between external environment condition and storing compartment
Change, but distinguish above-mentioned two situations without appropriate method of discrimination all the time in the prior art, cause refrigerator in the prior art
Refrigeration control it is not accurate enough.Do not increase refrigerator hardware cost too much, there is provided one kind can relatively accurately distinguish above-mentioned two
The method of discrimination of the situation of kind is that refrigerator art thirsts for solution but all the time unsolved technical problem always.
The content of the invention
In view of the above problems, it is proposed that the present invention is to overcome above mentioned problem or to solve the above problems at least in part.
The present invention one is further objective is that a kind of side detected and whether temperature anomaly article is put into refrigerator will be provided
Method, to detect whether refrigerator is put into Superheat Food during opening the door.
The present invention another further objective is that to improve the accuracy of the refrigeration control of refrigerator.
Especially, the invention provides a kind of for detecting the method that whether temperature anomaly article is put into refrigerator, wherein
The refrigerator includes：Inside is divided into the casing of at least one storage space, is arranged on the casing anterior door body, Yi Jifen
At least one infrared sensor that the other temperature at least one storage space is sensed, and methods described includes：
After door body unlatching, at least one infrared sensor collecting temperature value is controlled；
By each described infrared sensor, currently the temperature value of collection is compared with the temperature value of last collection, if appointing
The temperature value that current collection occurs in one infrared sensor is prominent more than default with the absolute value of the difference of the temperature value of last collection
The situation of variate, then obtain the infrared sensor and gathered before its corresponding abnormal storage space may be put into temperature anomaly article
The first temperature value and corresponding times of collection, and the second temperature value gathered after temperature anomaly article and corresponding may be put into
Times of collection；
The difference of the second temperature value and first temperature value is calculated, may put as the abnormal storage space
Enter the first temperature change value before and after temperature anomaly article；
Calculating the abnormal storage space according to Δ TA=(ln (m)-ln (n)) * Q/S may be put into temperature anomaly article
It is front and rear due to carrying out second temperature changing value caused by heat exchange between external environment condition and its, wherein Δ TA is the second temperature
Changing value, m is that the second temperature is worth corresponding times of collection, and n is the corresponding times of collection of first temperature value, and S is normal
Number, Q is the environment temperature outside the refrigerator；And
According to first temperature change value and the second temperature changing value judge in the abnormal storage space whether
It is put into temperature anomaly article.
Alternatively, during the door body is opened, if each described infrared sensor does not occur the temperature of current collection
Value and the situation of the absolute value more than default mutation value of the difference of the temperature value of last collection, then judge to be opened in the door body
At least one storage space is not put into temperature anomaly article described in period.
Alternatively, wherein the step of obtaining first temperature value includes：
The corresponding infrared sensor of the abnormal storage space is recorded once to be adopted with upper in the temperature value for current collection occur
The temperature value of the absolute value of the difference of the temperature value of collection nearest E collection more than before the mutation value, as first temperature
Value, wherein E >=2.
Alternatively, wherein the step of obtaining the second temperature value includes：
When the corresponding infrared sensor of the abnormal storage space is once gathered in the temperature value for current collection occur with upper
Temperature value difference absolute value more than after the mutation value, occur continuous N time collection temperature value be satisfied by it is adjacent twice
When the absolute value of the difference of the temperature value of collection is less than the first preset value, the corresponding infrared sensor of the abnormal storage space is recorded
Any temperature value for once gathering is used as the second temperature value, wherein M >=3 in the continuous N time collection, and described first is pre-
If value is less than or equal to the mutation value.
Alternatively, the corresponding infrared sensor of the abnormal storage space in the continuous N time collection for the first time or most
The temperature value for once gathering afterwards is used as the second temperature value.
Alternatively, wherein judging the abnormal storing according to first temperature change value and the second temperature changing value
The step of whether temperature anomaly article is put into space includes：
Judge whether first temperature change value is more than the second preset value with the difference of the second temperature changing value,
If so, then judging to be put into temperature anomaly article in the abnormal storage space；
If it is not, then judging not being put into temperature anomaly article in the abnormal storage space；
Wherein described second preset value is more than or equal to the mutation value.
Alternatively, wherein the quantity of the storage space and the infrared sensor is multiple.
Alternatively, wherein it is to open one in the door body to preset to control at least one infrared sensor collecting temperature value
Carried out after time.
Alternatively, methods described also includes：
If judging to be put into temperature anomaly article in the abnormal storage space, send vision and/or audible signal is reminded
User.
Whether whether the present invention first judges deposited in storage space for detecting the method for being put into temperature anomaly article in refrigerator
May be put into the abnormal storage space of temperature anomaly article, and further by abnormal storage space may to be put into temperature different
The first temperature change value before and after normal article and its may be put into before and after temperature anomaly article due between external environment condition and its
Second temperature changing value caused by heat exchange is carried out, judges whether be put into temperature anomaly article in abnormal storage space.The present invention
Judge that the principle that whether temperature anomaly article is put into abnormal storage space is put into warm-served food during mainly being opened using refrigerator doors
Thing and indoor and outdoor heat exchange cause the temperature change of storage space and open heat inside and outside phase storage space due to refrigerator doors merely hands over
Change caused temperature natural trend to make comparisons, to judge whether be put into Superheat Food in a certain storage space.
At present, not yet in the presence of the method for whether being put into temperature anomaly article in detection refrigerator in current refrigerator.For common
For user, may not yet recognize that Superheat Food (such as temperature is more than the food on 40 DEG C) is put into refrigerator can be made to refrigerator
Which kind of, into adverse effect, it is likely to not take notice of whether the food temperature being put into refrigerator is too high sometimes.For these problems, this
Whether the method for invention can relatively accurately judge be put into Superheat Food in a certain storage space, and can judge in storage space
Prompting is sent when being put into Superheat Food to user, is put again after the temperature of temperature anomaly article tends to normally in order to user
Enter refrigerator storage.Avoid to a certain extent or reduce refrigerator and its interior storing are caused due to being put into overheat article in refrigerator
Adverse effect.
Further, the reason for present invention can relatively accurately distinguish storage space temperature is raised during opening the door because
Temperature food higher is put into or merely due to heat exchange caused by free convection between external environment condition and storage space, so as to have
Carry out relatively reasonable appropriate refrigeration control in light of the circumstances beneficial to refrigerator.
According to the accompanying drawings to the detailed description of the specific embodiment of the invention, those skilled in the art will be brighter
Of the invention above-mentioned and other purposes, advantages and features.
Brief description of the drawings
Describe some specific embodiments of the invention in detail by way of example, and not by way of limitation with reference to the accompanying drawings hereinafter.
Identical reference denotes same or similar part or part in accompanying drawing.It should be appreciated by those skilled in the art that these
What accompanying drawing was not necessarily drawn to scale.In accompanying drawing：
Fig. 1 is the schematic diagram of refrigerator according to an embodiment of the invention；
Fig. 2 is according to an embodiment of the invention for detecting the method that whether temperature anomaly article is put into refrigerator
Schematic diagram；
Fig. 3 is the schematic diagram of the method for first temperature value of acquisition according to an embodiment of the invention and second temperature value；
Whether Fig. 4 is the side for judging to be put into temperature anomaly article in abnormal storage space according to an embodiment of the invention
The schematic diagram of method；
Whether Fig. 5 is the detailed stream for being put into temperature anomaly article in refrigerator for detecting according to an embodiment of the invention
Cheng Tu.
Specific embodiment
Fig. 1 is the schematic diagram of refrigerator according to an embodiment of the invention.Referring to Fig. 1, the refrigerator is in general manner
Can include：The infrared sensor 130 of casing 110 and at least one.Casing 110 can be by roof, bottom wall, rear wall and left and right two
Side wall is surrounded, and the front of casing 110 sets door body (not shown), and door body can be connected on the wall of side using pivot structure.Case
Storing compartment (such as refrigerating chamber) is defined inside body 110.Storing compartment can be separated at least one storage space 140.Example
Storing compartment is such as divided into multiple storage spaces 140 using rack component 120.One of which preferred structure is：Rack
Component 120 includes at least one horizontally disposed dividing plate, and storing compartment is vertically divided into multiple storage spaces
140.In Fig. 1, rack component 120 includes the first dividing plate, second partition, the 3rd dividing plate, wherein the first dividing plate top is formed
Shape between the second storage space, second partition and the 3rd dividing plate is formed between first storage space, the first dividing plate and second partition
Into the 3rd storage space.In other embodiments of the invention, dividing plate quantity and storage space in rack component 120
140 quantity, can in advance be configured according to the volume of refrigerator and use requirement.
At least one infrared sensor 130, is arranged at chamber interior between storing, and it is respectively used to measure each storage space 140
Temperature.Each infrared sensor 130 is corresponding with a storage space 140, to detect the temperature in the storage space 140.
The quantity of infrared sensor 130 is set according to the quantity of storage space 140, and each storage space 140 can set one
Infrared sensor 130.
In order to improve temperature sensing precision of the infrared sensor 130 to the interior items of storage space 140, meet empty to storing
Between 140 requirements freezed, inventor has carried out substantial amounts of test to the installation site of infrared sensor 130, and draws red
The preferred installation site and its preferred configuration mode of outer sensor 130.Storage space 140 where it of infrared sensor 130
Height higher than the whole height of storage space 140 1/2nd at (more excellent scope be higher than or positioned at storage space 140 it is whole
The three of body height/bis-), the infrared receiver center line of infrared sensor 130 is set to relative to angular range straight up
70 degree to 150 degree (more excellent scope is 76 degree to 140 degree)；And the level of the infrared receiver center line of infrared sensor 130
Projection is set to 30 degree to 60 degree (more excellent scope is 30 degree to 45 degree) with the angular range of side wall where it.
Infrared sensor 130 does not launch infrared ray, but passively receive in institute's sensing range the infrared ray of article transmitting and
Background infrared ray, directly perceives the region of variation and temperature of article temperature in storage space 140, is converted to corresponding electric signal.
In the refrigerator of the embodiment of the present invention, the adjacent measurement result twice of each infrared sensor 130 can be carried out
Calculate, obtaining the temperature rise situation of each storage space 140, and then certain is judged according to the temperature rise situation of storage space 140
Whether storage space 140 is put into temperature anomaly article.It will be understood by those skilled in the art that temperature anomaly article herein is
The article of temperature too high (for example temperature is more than or equal to 40 DEG C).
In some embodiments of the invention, refrigerator sets multiple storage spaces 140, and correspondingly, refrigerator sets multiple red
Outer sensor 130.Further, settable more than 3 storage space 140 of refrigerator, correspondingly, refrigerator sets more than 3
Infrared sensor 130.Due to being at most put into temperature anomaly article in two storage spaces 140 of refrigerator simultaneously, so, even if
Two storage spaces 140 place temperature anomaly article simultaneously, still have other storage spaces 140 not place temperature anomaly thing simultaneously
Product.
Fig. 2 is according to an embodiment of the invention for detecting the method that whether temperature anomaly article is put into refrigerator
Schematic diagram.This is used to detect that whether the method for being put into temperature anomaly article in refrigerator can include in general manner：
Step S102, after door body unlatching, controls the collecting temperature value of infrared sensor 130.
Step S104, by each infrared sensor 130, currently the temperature value of collection is carried out with the temperature value of last collection
Compare, judge whether to have during opening the door any infrared sensor 130 temperature value of current collection occur and once gathered with upper
The absolute value of the difference of temperature value is more than the situation of default mutation value, if so, then performing step S106；If it is not, then performing step
S105。
Step S105, each storage space 140 is not put into temperature anomaly article.
Step S106, obtains the infrared sensor and (temperature value of current collection and the temperature value of last collection occurs
Difference absolute value more than default mutation value situation infrared sensor) may be put into its corresponding abnormal storage space
The first temperature value and corresponding times of collection gathered before temperature anomaly article, and may be put into what is gathered after temperature anomaly article
Second temperature value and corresponding times of collection.In this application, for the ease of distinguishing, by the foregoing temperature value for current collection occur
Storage space corresponding more than the infrared sensor of mutation value with the absolute value of the difference of the temperature value of last collection is referred to as can
The abnormal storage space of temperature anomaly article can be put into.
Step S108, calculates the difference of second temperature value and the first temperature value, may put as the abnormal storage space
Enter the first temperature change value before and after temperature anomaly article.
Step S110, calculating the abnormal storage space according to Δ TA=(ln (m)-ln (n)) * Q/S may be put into temperature
Due to carrying out second temperature changing value caused by heat exchange between external environment condition and its before and after exception items, wherein Δ TA is second
Temperature change value, m is that second temperature is worth corresponding times of collection, and n is the corresponding times of collection of the first temperature value, and S is constant, Q
It is the environment temperature outside refrigerator.
Whether step S112, judges put in the abnormal storage space according to the first temperature change value and second temperature changing value
Enter temperature anomaly article.
In step s 102, the open and-shut mode of door body is detected using the door opening detection device of refrigerator.Door opening detection device
Can be detected using various ways such as fan-shaped switch, magnet-sensitive switch, Hall switch, when door body is closed or opened completely
Different electric signals are produced respectively, to indicate the state of door body.Infrared sensor can be controlled after door body opens a Preset Time
130 collecting temperature values.The Preset Time for example can be 2 to 3 seconds.Just gather infrared sensor 130 compared to just having been opened in door body
Temperature value, postponing a Preset Time can avoid causing the temperature value that infrared sensor 130 is gathered to occur to dash forward due to flow perturbation
Become.
Infrared sensor 130 can once be gathered at interval of 0.1ms (numerical value can be adjusted flexibly).It is all infrared
Sensor 130 can be acquired simultaneously.
In step S104, the big I of mutation value is obtained according to experiment.For specific refrigerator, storage space
140 infrared sensor 130 that heat exchange causes is adjacent to be detected twice being carried out due to external environment condition during opening the door and between it
The difference (difference can be designated as the first difference) of temperature value can be drawn by carrying out a large amount of tests to the refrigerator.Art technology
What personnel were realized that, storage space 140 enters due to being put into temperature anomaly article and external environment condition during opening the door with it
The difference (difference can be designated as the second difference) of the adjacent temperature value for detecting twice of infrared sensor 130 that row heat exchange causes should
Above-mentioned first difference should be more than.For example, when certain storage space 140 of refrigerator is put into the article that temperature is 25 DEG C during opening the door
The size of the difference of the adjacent temperature value for detecting twice of infrared sensor 130, can be used as the reference value of mutation value.Mutation value is for example
May be configured as 0.6 DEG C or 0.7 DEG C etc..
That is, in step S104, during door body is opened, if in foregoing at least one infrared sensor 130
The absolute value that the difference of the adjacent temperature value for gathering twice occurs in any infrared sensor 130 is (i.e. any more than the situation of mutation value
The temperature value of the collection of infrared sensor 130 is undergone mutation), then mean there is exception in foregoing at least one storage space 140
Storage space.There is the infrared sensor 130 pair of the absolute value more than mutation value of the difference of the adjacent temperature value for gathering twice in each
The storage space 140 answered is abnormal storage space.During door body is opened, if infrared sensor 130 is adjacent adopts twice for each
The absolute value of the difference of the temperature value of collection is respectively less than equal to mutation value, then mean not deposited in foregoing at least one storage space 140
In abnormal storage space, and then judge not being put into temperature anomaly article in each storing compartment.
In step s 106, obtaining the flow of the first temperature value and second temperature value includes various, and one of which is preferred
Mode can be found in the step of show in Fig. 3 S1062 and step S1064.
Step S1062, records the corresponding infrared sensor of the abnormal storage space in the temperature value for current collection occur
The temperature value gathered for E times recently before being more than the mutation value with the absolute value of the difference of the temperature value of last collection, as institute
State the first temperature value, wherein E >=2.E for example can be 2,3,4,5 etc..That is, in this step, by abnormal storage space pair
The temperature that the temperature value of the infrared sensor collection answered is gathered for E time before undergoing mutation is as abnormal storage space to be put into temperature different
Temperature before normal article.
Step S1064, when the corresponding infrared sensor of the abnormal storage space the temperature value for current collection occur with it is upper
The absolute value of the difference of the temperature value for once gathering more than after the mutation value, temperature value that continuous N time collection occur is satisfied by
When the absolute value of the difference of the adjacent temperature value for gathering twice is less than the first preset value, the abnormal storage space is recorded corresponding red
The temperature value that outer sensor is arbitrarily once gathered in the continuous N time collection is used as the second temperature value.
In step S1064, M >=3, and the first preset value is less than or equal to mutation value.M for example can be 3,4,5,6 etc..First
The big I of preset value is obtained according to experiment.For refrigerator, after temperature anomaly article is put into a certain storage space 140,
Temperature in the abnormal storage space can first be heated up with speed quickly, be tended towards stability afterwards.When in the abnormal storage space
After temperature tends towards stability, its corresponding infrared sensor 130 any temperature value for once gathering in continuous N time collection is satisfied by
The absolute value of the difference of the adjacent temperature value for gathering twice is less than the first preset value.Now, arbitrarily once adopted in continuous N time collection
The temperature value of collection can be used as the temperature of the abnormal storage space after it may be put into temperature anomaly article.First preset value is for example
May be configured as 0.5 DEG C or 0.4 DEG C etc..In a preferred embodiment, second temperature value is the corresponding infrared biography of abnormal storage space
The temperature value that sensor 130 is gathered for the first time or for the last time in continuous N time collection.
In the embodiment show in figure 3, the corresponding infrared sensor 130 of recording exceptional storage space is adjacent twice in appearance
The absolute value of the difference of the temperature value of collection exists more than the temperature value gathered for E times recently before mutation value as abnormal storage space
The first temperature value before temperature anomaly article may be put into；The corresponding infrared sensor 130 of recording exceptional storage space is in continuous N
Any temperature value for once gathering in secondary collection, the second temperature as abnormal storage space after it may be put into temperature anomaly article
Angle value.Assuming that the temperature value that the corresponding infrared sensor 130 of abnormal storage space is collected in its n-th is gathered with the N-1 times
The absolute value of the difference of the temperature value for arriving collects the first temperature value, wherein N at the N-E times more than mutation value, then its>E, and E >=
2；Assuming that the corresponding infrared sensor 130 of exception storage space collects second temperature value, wherein Q in its Q times collection point>N.
Abnormal storage space period before and after it may be put into temperature anomaly article is interpreted as the corresponding infrared biography of abnormal storage space
During the first temperature value of collection starts until collection second temperature value terminates, as each infrared sensor 130 exists sensor 130
During the N-E times collection point and the Q times collection point.
In an alternative embodiment, when continuous K collection is occurring first in the corresponding infrared sensor of abnormal storage space
Temperature value be satisfied by the adjacent temperature value for gathering twice difference absolute value be less than the first preset value when, it is in the continuous K
Any temperature value for once gathering is used as the first temperature value, wherein K >=3 in secondary collection, and the first preset value is less than or equal to mutation
Value.K for example can be 3,4,5,6 etc..Any temperature value for once gathering can be empty as the abnormal storing in being gathered at continuous K times
Between temperature before it may be put into temperature anomaly article.In a further embodiment, the first temperature value can be empty for abnormal storing
Between corresponding infrared sensor 130 continuous K times gather in for the first time or last time collection temperature value.
In step s 110, the calculating formula of second temperature changing value, i.e. Δ TA=(ln (m)-ln (n)) * can be pre-set
Q/S.The calculating formula can draw according to experimental simulation.For example, for specific refrigerator, varying environment temperature (such as 20 DEG C, 25 DEG C,
28 DEG C etc.), in refrigerator storage space under conditions of different temperatures (such as 3 DEG C, 5 DEG C, 8 DEG C), refrigerator is gathered by infrared sensor
Temperature value after enabling to before closing the door；Temperature of (i.e. specific environment temperature and specific storage space temperature) collection under the conditions of each
Angle value is made the temperature variation curve related to times of collection, and simulation obtains above-mentioned calculating formula.For specific refrigerator, S is
Definite value, it is related to refrigerator heat insulation effect etc., can be determined by measuring.The result of calculation Δ TA of above-mentioned calculating formula is refrigerator open
Period is due to carrying out temperature rise caused by heat exchange between external environment condition and its.
Whether step S112 judges be put into abnormal storage space according to the first temperature change value and second temperature changing value
The flow of temperature anomaly article includes various, and the preferred mode of one of which can be found in the step of show in Fig. 4 S1122 to step
S1126。
Step S1122, judges whether the first temperature change value is more than the second preset value with the difference of second temperature changing value,
If so, then performing step S1126；If it is not, then performing step S1124.
Step S1126, judges to be put into temperature anomaly article in abnormal storage space.
Step S1124, judges not being put into temperature anomaly article in abnormal storage space.
In step S1122, the second preset value can be more than or equal to mutation value.The size of the second preset value is assert with refrigerator
The minimum temperature of temperature anomaly article is related.If for example, refrigerator thinks article as temperature anomaly thing of the temperature higher than 40 DEG C
Product, then can be put into 40 DEG C of article in a certain storage space 140, and the size of the second preset value is determined by testing.
After step S1126, vision can be sent and/or audible signal reminds user that it is in correspondence storage space 140
The article temperature exception being put into.For example specific music or the tinkle of bells or voice can be sent by pronunciation device built-in in refrigerator
Prompting, and/or word is sent by the display device set on refrigerator door remind, and/or by lighting or flashing indicator light
User is reminded etc. mode.
After step S1124 or step S1126, each infrared sensor 130 can continue collecting temperature value, re-execute step
Rapid S104 to step S112.
Additionally, in certain embodiments, if the period before and after abnormal storage space may be put into temperature anomaly article,
The collecting temperature of the corresponding infrared sensor 130 of other a certain storage spaces 140 is also undergone mutation, then can be stored up the exception is judged
Whether it is put into after temperature anomaly article in object space, then judges another corresponding storing of infrared sensor 130 undergone mutation
Whether space 140 is put into temperature anomaly article.Judge the corresponding storage space 140 of another infrared sensor 130 undergone mutation
Whether the method for temperature anomaly article is put into reference can be made to step S106 to step S112.
Whether Fig. 5 is the detailed stream for being put into temperature anomaly article in refrigerator for detecting according to an embodiment of the invention
Cheng Tu.Wherein the quantity of infrared sensor 130 is three, is respectively used to gather three temperature of storage space 140.
Step S201, judges whether door body opens, if so, performing step S202.
Step S202, after postponing y seconds, 3 collecting temperature value IR (1) of infrared sensor 130.Y can be 2~3 seconds.
Step S204,3 infrared sensors 130 continue collecting temperature value IR (2).
Step S206,3 infrared sensors 130 continue collecting temperature value IR (H).
Step S208, judges the temperature value that currently the temperature value IR (H) of collection was gathered with last time of any infrared sensor 130
Whether the absolute value of the difference of IR (H-1) is more than mutation value A；If so, the temperature value for regarding as the infrared sensor 130 collection occurs
Mutation, performs step S210；If it is not, the temperature value for regarding as three collections of infrared sensor 130 is not undergone mutation, perform
Step S209.In the present invention, if assert, the temperature value of certain infrared sensor 130 collection there occurs mutation, mean this
The corresponding storage space 140 of infrared sensor 130 is likely to be put into temperature anomaly article, causes the temperature of the storage space 140
Degree there occurs mutation.
Whether step S209, judge door body in opening, if so, return to step S206, continues to make three infrared biographies
The collecting temperature value of sensor 130, and repeat to judge that currently the temperature value IR (H) of collection was gathered any infrared sensor 130 with last time
Temperature value IR (H-1) difference absolute value whether be more than mutation value A；If it is not, performing step S211.
Step S211, judges that each storage space 140 is not put into temperature anomaly article.
Step S210, the temperature of the recording exceptional storage space secondary collection of the corresponding H-2 of infrared sensor 130 (i.e. E=2)
(times of collection n=H-2, wherein H are the temperature value and last phase of infrared sensor collection for value IR (H-2) and times of collection
Than the times of collection undergone mutation).The infrared sensor 130 that the temperature value of collection is undergone mutation is identified as in step S208
The first infrared sensor is designated as, other two infrared sensors 130 are designated as the second infrared sensor and the 3rd infrared sensing
Device, then the temperature value IR1 (H- of (i.e. E=2) collection twice before recording the temperature value of the first infrared sensor collection when undergoing mutation
2)。
Step S212,3 infrared sensors 130 continue collecting temperature value IR (H+1).
Step S214, the absolute value of the difference for judging to occur collection value IR (H) and collection value IR (H-1) in step S208 is big
Whether the temperature value gathered after in the infrared sensor 130 (i.e. the first infrared sensor) of the situation of the first preset value A
The temperature value for continuous N time collection occur is satisfied by the absolute value of adjacent difference twice less than the second preset value B, if so, performing step
Rapid S216.
Step S216, the first infrared sensor 130 of record in continuous N time collection collection value IR1 (m) of first time and
Times of collection m.
Step S218, second temperature changing value is calculated according to Δ TA=(ln (m)-ln (H-2)) * Q/S.Wherein Δ TA is institute
Second temperature changing value is stated, m is that the second temperature is worth corresponding times of collection, and H-2 is adopted for first temperature value is corresponding
Collection number of times, S is constant, and Q is the environment temperature outside the refrigerator.
Whether step S220, judge IR1 (m)-IR1 (H-2)-Δ TA more than the second preset value C, if so, then performing step
S222；If it is not, then performing step S224.In step S220, the abnormal storage space gathered using the first infrared sensor is existed
May be put into after temperature anomaly article temperature when tending towards stability with the temperature that may be put into before temperature anomaly article
Difference, is compared with Δ TA, if both differences are more than the second preset value, performs step S222, assert that first is infrared
Temperature anomaly article is put into the corresponding abnormal storage space of sensor；If both differences are less than or equal to the second preset value,
Step S224 is then performed, is assert in the corresponding abnormal storage space of the first infrared sensor and is not put into temperature anomaly article.
After step S222 and step S224, can return to perform step S201.
In certain embodiments, after step S222, prompting can be sent, for example, is lighted to should abnormal storage space
Indicator lamp, to remind user to be put into temperature anomaly article in the storage space 140.
In further embodiments, the judged result of step S220 can be sent to the master control borad of refrigerator, participates in refrigerator system
The control of cooling system.For example, when judged result is to be put into temperature anomaly article in a certain storage space 140, then making refrigeration system
More colds are provided to the storage space 140, so that its temperature is reduced to default storage temperature as early as possible.Using the present embodiment
Whether the method for being put into temperature anomaly article in detection refrigerator, can timely and effectively carry out refrigeration control, it is to avoid high temp objects
Influence to storage space 140 around, improves the hoarding effect of cold compartment of refrigerator, the nutrition leak of food is reduced, while avoiding
To waste of energy caused by whole storing compartment indistinction refrigeration.
Additionally, in certain embodiments, judging whether the corresponding storage space 140 of the first infrared sensor is put into temperature
After exception items, judge whether the temperature value that second, third infrared sensor is gathered undergos mutation using step S208, so that
Determine whether whether be put into temperature anomaly article in the corresponding storage space 140 of second, third infrared sensor.Idiographic flow
Refer to step S210 to step S222 or to step S224.
In an illustrative embodiment, the quantity of infrared sensor 130 is 3, respectively the first infrared sensor,
Second infrared sensor, the 3rd infrared sensor, gather three temperature of storage space 140 respectively, three storage spaces 140
Temperature is set as 5 DEG C.It is 0.6 DEG C to make above-mentioned mutation value, and the first preset value is 0.4 DEG C, and the second preset value is 0.8 DEG C, E=2,
M=4.S is that 12, Q is 25 DEG C.
After enabling, 3 infrared sensors 130 start collecting temperature value after the 2nd second.Wherein, the first infrared sensor the 1st time
The temperature value of collection is 5.1 DEG C, the temperature value of the 2nd collection be 5.2 DEG C, the 3rd time temperature values of collection be 5.4 DEG C, the 4th adopts
The temperature value of collection is 5.6 DEG C, the temperature value of the 5th collection be 5.9 DEG C, the 6th time temperature values of collection be 6.2 DEG C, the 7th collection
Temperature value be 6.9 DEG C, the temperature values of the 8th collection be 7.6 DEG C, the 9th time temperature values of collection be 8.2 DEG C, the 10th collection
Temperature value be 8.8 DEG C, the temperature value of the 11st collection be 9.3 DEG C, the 12nd time temperature values of collection for 9.6 DEG C, the 13rd time are adopted
The temperature value of collection is 9.9 DEG C, the temperature value of the 14th collection be 10.2 DEG C, the 15th time temperature values of collection be 10.4 DEG C ....
The temperature value of the 1st collection of the second infrared sensor is that 5.2 DEG C, the 2nd time temperature values of collection are 5.3 DEG C, the 3rd time
The temperature value of collection is 5.5 DEG C, the temperature value of the 4th collection is 5.7 DEG C, the temperature value of the 5th collection is for 5.9 DEG C, the 6th time are adopted
The temperature value of collection is that the temperature value of 6.2 DEG C, the 7th time collections is that 6.4 DEG C, the 8th time temperature values of collection are 6.6 DEG C, gather for the 9th time
Temperature value be 6.8 DEG C, the temperature value of the 10th collection be 7.1 DEG C, the 11st time temperature values of collection for 7.3 DEG C, the 12nd time are adopted
The temperature value of collection is that the temperature value of 7.6 DEG C, the 13rd time collections is that 7.9 DEG C, the 14th time temperature values of collection are 8.2 DEG C, the 15th time
The temperature value of collection be 8.4 DEG C ....
The temperature value of the 3rd infrared sensor the 1st time collection is that 5.1 DEG C, the 2nd time temperature values of collection are 5.3 DEG C, the 3rd time
The temperature value of collection is 5.4 DEG C, the temperature value of the 4th collection is 5.6 DEG C, the temperature value of the 5th collection is for 5.9 DEG C, the 6th time are adopted
The temperature value of collection is that the temperature value of 6.1 DEG C, the 7th time collections is that 6.4 DEG C, the 8th time temperature values of collection are 6.6 DEG C, gather for the 9th time
Temperature value be 6.9 DEG C, the temperature value of the 10th collection be 7.1 DEG C, the 11st time temperature values of collection for 7.4 DEG C, the 12nd time are adopted
The temperature value of collection is that the temperature value of 7.7 DEG C, the 13rd time collections is that 7.9 DEG C, the 14th time temperature values of collection are 8.1 DEG C, the 15th time
The temperature value of collection be 8.3 DEG C ....
According to above-mentioned collection result, it is known that the first infrared sensor the adjacent temperature for gathering twice occurs when gathering for the 7th time
Situation (i.e. | 6.9 DEG C -6.2 DEG C | of the absolute value of the difference of angle value more than mutation value>0.6 DEG C, H=7), the first infrared sensor pair
The storage space 140 answered is abnormal storage space, it is possible to can be put into the storage space 140 of temperature anomaly article.Record the 5th
The temperature value of secondary (i.e. n=H-E=7-2=5) collection is used as the first temperature value.First infrared sensor is since the 12nd time gathers
Meet the adjacent temperature value for gathering twice difference absolute value less than the first preset value situation (the 12nd time collection temperature value with
11st time the absolute value of the difference of the temperature value of collection is less than 0.4 DEG C, i.e. | 9.6 DEG C -9.3 DEG C |<0.4 DEG C, m=12), and to the 15th
Secondary collection meets situation of the continuous 4 times absolute values of the difference of the adjacent temperature value for gathering twice less than the first preset value, then record
First infrared sensor gathers the temperature value of (i.e. the 12nd time collection) as second temperature for the first time in being gathered at continuous 4 times
Value.Correspondingly, the first temperature change value=- 5.9 DEG C=3.7 DEG C of the-the first temperature value=9.6 DEG C of second temperature value.
Second temperature changing value, Δ TA=(ln12-ln5) * 25/12 are calculated according to Δ TA=(ln (m)-ln (n)) * Q/S
=1.82 DEG C, therefore the first temperature change value and -1.82 DEG C of difference=3.7 DEG C=1.88 DEG C of second temperature changing value, it is more than
Second 0.8 DEG C of preset value, therefore judge to be put into temperature anomaly article in the corresponding abnormal storage space of the first infrared sensor.
Second infrared sensor and the 3rd infrared sensor do not occur phase during the 1st collection to the 15th collection
Situation of the absolute value of the difference of the temperature value that neighbour gathers twice more than mutation value.Therefore in the 1st collection of infrared sensor to the 15th
During secondary collection, do not put in the corresponding storage space of the second infrared sensor and the corresponding storage space of the 3rd infrared sensor
Enter temperature anomaly article.
So far, although those skilled in the art will appreciate that detailed herein have shown and described multiple of the invention and show
Example property embodiment, but, without departing from the spirit and scope of the present invention, still can be direct according to present disclosure
It is determined that or deriving many other variations or modifications for meeting the principle of the invention.Therefore, the scope of the present invention is understood that and recognizes
It is set to and covers all these other variations or modifications.
Claims (9)
1. a kind of for detecting the method that whether temperature anomaly article is put into refrigerator, wherein the refrigerator includes：Inside divides
For at least one storage space casing, be arranged on the anterior door body of the casing and respectively at least one storing
At least one infrared sensor that the temperature in space is sensed, and methods described includes：
After door body unlatching, at least one infrared sensor collecting temperature value is controlled；
By each described infrared sensor, currently the temperature value of collection is compared with the temperature value of last collection, if any red
There is the temperature value of current collection in outer sensor and the absolute value of the difference of the temperature value of last collection is more than default mutation value
Situation, then obtain the infrared sensor is gathered before its corresponding abnormal storage space may be put into temperature anomaly article
One temperature value and corresponding times of collection, and the second temperature value and corresponding collection gathered after temperature anomaly article may be put into
Number of times；
The difference of the second temperature value and first temperature value is calculated, temperature may be put into as the abnormal storage space
The first temperature change value before and after degree exception items；
Calculating the abnormal storage space according to Δ TA=(ln (m)-ln (n)) * Q/S may be put into before and after temperature anomaly article
Due to carrying out second temperature changing value caused by heat exchange between external environment condition and its, wherein Δ TA is second temperature change
Value, m is that the second temperature is worth corresponding times of collection, and n is the corresponding times of collection of first temperature value, and S is constant, Q
It is the environment temperature outside the refrigerator；And
Judge whether be put into the abnormal storage space according to first temperature change value and the second temperature changing value
Temperature anomaly article.
2. method according to claim 1, also includes：
During the door body is opened, if the temperature value that each described infrared sensor does not occur current collection is adopted with the last time
The absolute value of the difference of the temperature value of collection more than default mutation value situation, then judge the door body open during it is described at least
One storage space is not put into temperature anomaly article.
3. method according to claim 1, wherein the step of obtaining first temperature value includes：
The corresponding infrared sensor of the abnormal storage space is recorded once to be gathered with upper in temperature value that current collection occur
The temperature value of the absolute value of the difference of temperature value nearest E collection more than before the mutation value, as first temperature value, its
Middle E >=2.
4. method according to claim 1, wherein the step of obtaining the second temperature value includes：
When the corresponding infrared sensor of the abnormal storage space is in the temperature value and the upper temperature for once gathering for current collection occur
The absolute value of the difference of angle value more than after the mutation value, temperature value that continuous N time collection occur is satisfied by adjacent gathering twice
Temperature value difference absolute value be less than the first preset value when, record the corresponding infrared sensor of the abnormal storage space in institute
Any temperature value for once gathering is used as the second temperature value, wherein M >=3, first preset value in stating continuous N time collection
Less than or equal to the mutation value.
5. method according to claim 4, wherein
The corresponding infrared sensor of the abnormal storage space in the continuous N time collection for the first time or last time collection
Temperature value is used as the second temperature value.
6. method according to claim 1, wherein according to first temperature change value and the second temperature changing value
Judge that whether the step of being put into temperature anomaly article in the abnormal storage space includes：
Judge whether first temperature change value is more than the second preset value with the difference of the second temperature changing value,
If so, then judging to be put into temperature anomaly article in the abnormal storage space；
If it is not, then judging not being put into temperature anomaly article in the abnormal storage space；
Wherein described second preset value is more than or equal to the mutation value.
7. method according to claim 1, wherein the quantity of the storage space and the infrared sensor is multiple.
8. method according to claim 1, wherein it is in institute to control at least one infrared sensor collecting temperature value
Stating after door body opens a Preset Time is carried out.
9. method according to claim 1, also includes：
If judging to be put into temperature anomaly article in the abnormal storage space, send vision and/or audible signal reminds user.
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| WO2018095332A1 (en) * | 2016-11-23 | 2018-05-31 | 青岛海尔股份有限公司 | Method for detecting whether item of abnormal temperature has been placed in refrigerator |
| WO2018095334A1 (en) * | 2016-11-23 | 2018-05-31 | 青岛海尔股份有限公司 | Method for detecting whether item of abnormal temperature has been placed in refrigerator |
| CN111833548A (en) * | 2020-06-10 | 2020-10-27 | 合肥美的智能科技有限公司 | Monitoring method of storage cabinet, server, storage cabinet and storage system |
| CN112789644A (en) * | 2018-10-02 | 2021-05-11 | 松下电器（美国）知识产权公司 | Information providing method |
| CN113899158A (en) * | 2021-10-15 | 2022-01-07 | 珠海格力电器股份有限公司 | Temperature determination method, refrigeration control method and refrigeration equipment |
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| CN106766648B (en) | 2019-02-15 |
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