CN104897231B - Refrigerator uses volume measurement method and apparatus - Google Patents
Refrigerator uses volume measurement method and apparatus Download PDFInfo
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- CN104897231B CN104897231B CN201510219350.1A CN201510219350A CN104897231B CN 104897231 B CN104897231 B CN 104897231B CN 201510219350 A CN201510219350 A CN 201510219350A CN 104897231 B CN104897231 B CN 104897231B
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- volume
- refrigerator
- value
- storage room
- detection components
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F17/00—Methods or apparatus for determining the capacity of containers or cavities, or the volume of solid bodies
-
- 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
- F25D27/00—Lighting arrangements
Abstract
Volume measurement method and apparatus is used the present invention provides a kind of refrigerator.Wherein, refrigerator uses volume measurement method, it is less than or equal to the refrigerator of preset volume threshold value suitable for the storage room volume of refrigerator, this method comprises: utilizing visual intensity and infrared luminous intensity in the single detection components detection storage room being arranged in inside the storage room of refrigerator；According to visual intensity estimating using volume to storage room, the estimated value using volume is obtained；The modifying factor of volume is used according to infrared light Strength co-mputation；Cumulative estimated value and modifying factor obtain the calculated value using volume.Of the invention uses statistical detection method, is detected using optical principle to the used volume of refrigerator storage room, testing result is accurate, without opening refrigerator door, improving the usage experience of user and maintaining the good storage ambient of food.
Description
Technical field
The present invention relates to refrigerator control fields, use volume measurement method and apparatus more particularly to a kind of refrigerator.
Background technique
The intelligence of refrigerator is a direction of refrigerator development and the emphasis of numerous refrigerator producers developmental research.With
Improvement of living standard, people require refrigerator not only to rest on the requirement of this level of basic foodstuff keeping-freshness storage function, right
In that people can be facilitated to live, the intelligent operations such as improve the quality of living require also higher and higher.
As storage food household electrical appliance, user it should be understood that interior refrigerator space service condition, to determine food
Amount of storage, in the prior art, people generally opening by way of refrigerator doors observe, estimate that the use of refrigerator is held
Product.This just needs user to operate near refrigerator, and often switch refrigerator doors can be brought to the storage of food it is unfavorable
It influences, this brings great inconvenience to the use of user.
Based on problem above, also occur utilizing weight of object, detection in weight sensor measurement refrigerator in the prior art
Specific storing position storage configuration, arrangement camera multiple technologies means, for obtaining the service condition of refrigerator space, however these
Some testing results inaccuracy in scheme, some are only capable of detecting special food, cannot accurately reflect refrigerator volume
Actual use situation.
Summary of the invention
It is an object of the present invention to provide a kind of refrigerator that refrigerator volume detection is realized by optical principle.
Particularly, volume measurement method is used the present invention provides a kind of refrigerator, the storage room suitable for refrigerator is held
Product is less than or equal to the refrigerator of preset volume threshold value, this method comprises: single inside the storage room of refrigerator using being arranged in
Detection components detect the visual intensity and infrared luminous intensity in storage room；Use according to visual intensity to storage room
Volume is estimated, the estimated value using volume is obtained；The modifying factor of volume is used according to infrared light Strength co-mputation；It is cumulative to estimate
Calculation value and modifying factor obtain the calculated value using volume.
Optionally, estimate including: to use according to 1 Dui of formula using volume to storage room according to visual intensity
Volume is estimated: formula 1:V '=SA × k, and in equation 1, V ' is the estimated value using volume, and SA is detection components detection
The visual intensity value arrived, k are that the visible light of detection components estimates coefficient.
It optionally, the use of the modifying factor of volume include: to calculate to use volume according to formula 2 according to infrared light Strength co-mputation
Modifying factor:
Formula 2:M=SP × J × T/SA,
In formula 2, M is modifying factor, and SP is the infrared light intensity value that detection components detect, J is detection components
Infrared light corrects constant, and T is the corresponding distance value of infrared luminous intensity that detection components detect.
Optionally, k and J is the constant pre-saved in refrigerator, is obtained by preparatory test statistics.
Optionally, before the step of detecting visual intensity and infrared luminous intensity further include: obtain volume measurement triggering
Signal, volume measurement trigger signal include following any one or more: timing signal, the door signal of refrigerator, user's operation
Trigger signal.
Optionally, after obtaining using the calculated value of volume further include: according to the calculated value adjustment refrigerator for using volume
Refrigerating state and/or to user export calculated value.
According to another aspect of the present invention, a kind of use device for measuring volume of refrigerator is additionally provided, refrigerator is suitable for
Storage room volume be less than or equal to preset volume threshold value refrigerator, device includes: data acquisition module, is configured with cloth
The visual intensity and infrared luminous intensity being placed in the single detection components detection storage room inside the storage room of refrigerator；Estimate
Module is calculated, the estimating using volume to storage room according to visual intensity is configured to, obtains the estimated value using volume；
Correction module is configured to use the modifying factor of volume according to infrared light Strength co-mputation；Result-generation module is configured to add up and estimate
Calculation value and modifying factor obtain the calculated value using volume.
Optionally, estimation block is configured to: it is estimated using volume according to 1 Dui of formula, formula 1:V '=SA × k,
In equation 1, V ' is the estimated value using volume, and SA is the visual intensity value that detection components detect, k is detection components
Visible light estimates coefficient；Correction module is configured to: according to formula 2 calculate use volume modifying factor: formula 2:M=SP ×
J × T/SA, in formula 2, M is modifying factor, and SP is the infrared light intensity value that detection components detect, J is detection components
Infrared light corrects constant, and T is the corresponding distance value of infrared luminous intensity that detection components detect, and wherein k and J is to pre-save
In the constant of refrigerator, obtained by preparatory test statistics.
Optionally, volume measurement trigger signal, volume measurement touching apparatus above further include: trigger module is configured to: are obtained
Signal include it is following any one or more: timing signal, the door signal of refrigerator, user's operation trigger signal.
Optionally, apparatus above further include: execution module is configured to the system according to the calculated value adjustment refrigerator for using volume
Cold state and/or to user export calculated value.
Refrigerator of the invention uses volume measurement method and apparatus, is less than or equal to the storage of preset threshold in available space
One detection components of indoor arrangement, detect the used volume of refrigerator storage room using optical principle between object, detect
As a result accurate, without opening refrigerator door, improving the usage experience of user and maintaining the good storage ambient of food.
Further, refrigerator of the invention can realize the intelligent control of refrigerator using the refrigerator volume detected, improve
The intelligence degree of refrigerator.
According to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will be brighter
The above and other objects, advantages and features of the present invention.
Detailed description of the invention
Some specific embodiments of the present invention is described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter.
Identical appended drawing reference denotes same or similar part or part in attached drawing.It should be appreciated by those skilled in the art that these
What attached drawing was not necessarily drawn to scale.In attached drawing:
Fig. 1 is the schematic diagram using volume measurement refrigerator that method is applicable in of refrigerator according to an embodiment of the invention；
Fig. 2 is a kind of control block diagram of refrigerator shown in FIG. 1；
Fig. 3 is another control block diagram of refrigerator shown in FIG. 1；
Fig. 4 is the schematic diagram using volume measurement method of refrigerator according to an embodiment of the invention；And
Fig. 5 is the schematic diagram using device for measuring volume of refrigerator according to an embodiment of the invention.
Specific embodiment
Fig. 1 is the schematic diagram using volume measurement refrigerator that method is applicable in of refrigerator according to an embodiment of the invention；
The refrigerator is generally can include: cabinet and a detection components 100.
The cabinet in the refrigerator of the present embodiment defines storage room 400, and cabinet includes horizontally disposed top
Wall, bottom wall and the side wall being vertically arranged.In general, being vertically arranged side wall includes three vertical side walls, respectively as a left side
Side wall, right side wall and rear wall, left side wall and right side wall are arranged in parallel, and rear wall is vertically arranged with left side wall and right side wall, door
Body is oppositely arranged with rear wall.
Detection components 100 are optionally arranged on a side of storage room roof or storage room side wall.
Such as detection components can be arranged on rear wall.If being provided with drawable drawer in refrigerator storage room, inspection
Surveying component can be arranged in the back plate of drawer.The refrigerator of the present embodiment requires the volume of storage room to be less than or equal to default threshold
Value generally requires the active volume of storage room to be no more than 30L.According to test result, if exceeding this threshold value, it is possible to lead
Cause biggish detection error.
Fig. 2 and Fig. 3 is two kinds of control block diagrams of refrigerator shown in FIG. 1 respectively.In the embodiment shown in Figure 2, detection group
Visible light source 110 of the visible light that part 100 detects from setting detection components.Which is primarily adapted for use in refrigerator storage room
The case where interior lighting source is unable to satisfy testing requirements.In the embodiment shown in fig. 3.Meet volume in lighting source 500
Testing requirements, the lighting source that script can be used issue visible light.Detection components 100 are at least further include: infrared light supply 120,
Light sensitive device 130.Infrared light supply 120 is configured to issue infrared light to the inside of storage room 400.Light sensitive device 130 is configured to examine
Survey the visual intensity and infrared luminous intensity of 100 position of detection components.The quantity of detection components 100 can be according between storing
The volume and structure of room 400 are determined.
With the change using size using volume of storage room 400, it is seen that light and infrared light are in storage room 400
Interior reflection and the case where blocking, change, and there is also differences for the propagation characteristic of visible light and infrared light, by invention
The summary and test of people sums up the rule that visual intensity and infrared luminous intensity change with the variation for using volume, thus
Realize the detection that refrigerator volume is realized using optical principle.
Apparatus for calculating capacity 200 is electrically connected with detection components 100, and is configured to: obtaining visual intensity and infrared light intensity
Degree, and according to the use volume of visual intensity and infrared light Strength co-mputation storage room 400.
The above apparatus for calculating capacity 200 can be integrally disposed with detection components 100, can also be arranged in the master control borad of refrigerator
It is upper to be electrically connected by cable with detection components, to transmit detection signal.
The refrigerator of the present embodiment can also include: control device 300.The control device 300 can be to 100 He of detection components
Apparatus for calculating capacity 200 is controlled, and can also carry out intelligent control using refrigeration of the volume to refrigerator according to calculated.Example
It as control device 300 can be separately connected with apparatus for calculating capacity 200 and detection components 100, and is configured to: obtaining volumeter
Trigger signal is calculated, and controls apparatus for calculating capacity 200 and the unlatching of detection components 100.The trigger signal can be refrigerator shutdown
Signal, timing signal etc..Due to that can pick and place to food after generally opening refrigerator doors, control device 300 can be every
A volume measurement is triggered after secondary shutdown.
In addition, control device 300 is configured to: what acquisition apparatus for calculating capacity 200 was calculated uses volume；And root
Volume is used according to the refrigerating state for using volume adjustment refrigerator and/or to user's output.Such as in the shutdown letter for getting refrigerator
After number, start the device for measuring volume in refrigerator storage room 400, to detect the use volume of storage room 400；Compare detection
Out use volume and refrigerator to close the door before use volume；If it is detected that using volume be greater than close the door before use volume,
Drive the cold source of storage room 400 with high-power operation, so that refrigerator enters cooling pattern.So that the food temperature being just put into is fast
Speed decline.The size that can be changed into the time of cooling pattern according to volume determines.Control device 300 can also be by wireless
Mode uses volume to user terminal output, and when being less than preset volume threshold value using volume, exports food to refrigerator user
Supplement standby signal.
The refrigerator of the present embodiment can be executed using volume measurement method by apparatus for calculating capacity 200, between storing
Room is calculated using volume.Fig. 4 is the signal using volume measurement method of refrigerator according to an embodiment of the invention
Figure, this method comprises:
Step S402, using be arranged in inside the storage room of refrigerator single detection components detection storage room in can
Light-exposed intensity and infrared luminous intensity；
Step S404 obtains estimating using volume according to visual intensity estimating using volume to storage room
Calculation value；And
Step S406 uses the modifying factor of volume according to infrared light Strength co-mputation；Cumulative estimated value and modifying factor obtain
To the calculated value for using volume.
Wherein step S404 uses volume estimating storage room according to visual intensity, obtains using volume
A kind of calculation of estimated value is
It is estimated using volume according to 1 Dui of formula:
Formula 1:V '=SA × k, in equation 1, V ' be using volume estimated value, SA be detection components detect can
Light-exposed intensity value, k are that the visible light of detection components estimates coefficient.
Step S406 according to infrared light Strength co-mputation using volume modifying factor the step of may include: according to formula 2
Calculate the modifying factor for using volume:
Formula 2:M=SP × J × T/SA,
In formula 2, M is modifying factor, and SP is the infrared light intensity value that detection components detect, J is detection components
Infrared light corrects constant, and T is the corresponding distance value of infrared luminous intensity that detection components detect.
Finally use calculated value V=V '+M=SA × k+SP × J × T/SA of volume.K and J is to pre-save in refrigerator
Constant show that the available space of storage room and the position of detection components generate shadow to k and J by preparatory test statistics
It rings, after the position of refrigerator volume and detection components determines, the numerical value of k and J are also determining.
Can also include: to obtain volume measurement trigger signal before step S402, volume measurement trigger signal include with
Under it is any one or more: timing signal, the door signal of refrigerator, user's operation trigger signal.To in varied situations
Start volume measurement.In addition after obtaining using the calculated value of volume further include: according to the calculated value adjustment ice for using volume
The refrigerating state of case and/or to user export calculated value.Such as after getting the door signal of refrigerator, between starting refrigerator storing
Device for measuring volume in room 400, to detect the use volume of storage room 400；Compare use volume and the refrigerator detected
Volume is used before shutdown；If it is detected that using volume be greater than close the door before use volume, drive the cold of storage room 400
Source is with high-power operation, so that refrigerator enters cooling pattern.So that the food temperature being just put into declines rapidly.Into cooling pattern
Time can according to volume change size determine.Control device 300 can also be exported wirelessly to user terminal
Using volume, and when being less than preset volume threshold value using volume, food is exported to refrigerator user and supplements standby signal.
The embodiment of the invention also provides a kind of device for measuring volume that uses of refrigerator, and Fig. 5 is a reality according to the present invention
Apply the schematic diagram using device for measuring volume of the refrigerator of example.The refrigerator generally may be used using the detection device 600 of volume
To include: data acquisition module 610, estimation block 620, correction module 630, result-generation module 640, trigger module 650 held
Row module 660.These components, which can according to need, flexibly to be configured, may not necessarily configure in some optional embodiments more than
All modules.
In with upper-part, data acquisition module 610 is configured with single inside the storage room for being arranged in refrigerator
Detection components detect the visual intensity and infrared luminous intensity in storage room.Estimation block 620 is configured to according to visible light intensity
Estimating using volume to storage room is spent, the estimated value using volume is obtained.Correction module 630 is configured to according to infrared
Luminous intensity calculates the modifying factor for using volume.Result-generation module 640, which is configured to cumulative estimated value and modifying factor, to be made
With the calculated value of volume.
Wherein, the algorithm of estimation block 620 can be with are as follows: is estimated using volume according to 1 Dui of formula, formula 1:V '=SA
× k, in equation 1, V ' are the estimated value using volume, and SA is the visual intensity value that detection components detect, k is detection group
The visible light of part estimates coefficient；Correction module 630 is configured to: the modifying factor for using volume: formula 2 is calculated according to formula 2:
M=SP × J × T/SA, in formula 2, M is modifying factor, and SP is the infrared light intensity value that detection components detect, J is detection
The infrared light of component corrects constant, and T is the corresponding distance value of infrared luminous intensity that detection components detect, and wherein k and J is pre-
It is first stored in the constant of refrigerator, is obtained by preparatory test statistics.The use that result-generation module 640 is finally calculated is held
Long-pending calculated value V=V '+M=SA × k+SP × J × T/SA.K and J is the constant pre-saved in refrigerator, passes through preparatory examination
It tests statistics to obtain, the available space of storage room and the position of detection components have an impact k and J.
Trigger module 650 is configured to: obtaining volume measurement trigger signal, volume measurement trigger signal includes following any one
Or it is multinomial: timing signal, the door signal of refrigerator, user's operation trigger signal.
Execution module 660 can be configured to according to use volume calculated value adjust refrigerator refrigerating state and/or to
Family exports calculated value.In addition execution module 660 can also judge whether be less than preset volume threshold value using volume；If so, Xiang Bing
The user of case exports food and supplements standby signal.Standby signal can be shown by the display screen of refrigerator local, Huo Zhetong
It crosses and lights preset warning light to remind user, more preferably reminding method is to be tied up in advance by wireless network to the refrigerator to one kind
Fixed mobile terminal (such as mobile phone) sends prompt information to be reminded.
The refrigerator of the present embodiment uses volume measurement method and apparatus, is less than or equal to preset threshold in available space
A detection components are arranged in storage room, the used volume of refrigerator storage room is detected using optical principle, are examined
It is accurate to survey result, without opening refrigerator door, improving the usage experience of user and maintaining the good storage ambient of food.And
The intelligent control that refrigerator can be realized using the refrigerator volume detected, improves the intelligence degree of refrigerator.
Claims (7)
1. a kind of refrigerator uses volume measurement method, the storage room volume suitable for the refrigerator is less than or equal to default hold
The refrigerator of product threshold value, which comprises
The visible light in the storage room is detected using the single detection components inside the storage room for being arranged in the refrigerator
Intensity and infrared luminous intensity；
According to the visual intensity estimating using volume to the storage room, the estimation using volume is obtained
Value, comprising:
It is estimated using volume according to formula 1 described:
Formula 1:V '=SA × k,
In the formula 1, V ' is the estimated value using volume, and SA is the visual intensity that the detection components detect
Value, k are that the visible light of the detection components estimates coefficient；
The modifying factor of volume is used according to the infrared light Strength co-mputation, comprising:
The modifying factor using volume is calculated according to formula 2:
Formula 2:M=SP × J × T/SA,
In the formula 2, M is the modifying factor, and SP is the infrared light intensity value that the detection components detect, J is institute
The infrared light amendment constant of detection components is stated, T is the corresponding distance value of infrared luminous intensity that the detection components detect；
It adds up the estimated value and the modifying factor obtains the calculated value using volume.
2. according to the method described in claim 1, wherein,
The k and J is to pre-save in the constant of the refrigerator, is obtained by preparatory test statistics.
3. method according to any one of claim 1 to 2, wherein in detection visual intensity and infrared luminous intensity
Before step further include:
Volume measurement trigger signal is obtained, the volume measurement trigger signal includes following any one or more: timing signal,
The trigger signal of the door signal of the refrigerator, user's operation.
4. method according to any one of claim 1 to 2, wherein after obtaining the calculated value using volume
Further include:
The refrigerating state of the refrigerator is adjusted according to the calculated value using volume and/or exports the calculated value to user.
5. a kind of refrigerator uses device for measuring volume, the storage room volume suitable for the refrigerator is less than or equal to default hold
The refrigerator of product threshold value, described device include:
Data acquisition module is configured with described in the single detection components detection inside the storage room for being arranged in the refrigerator
Visual intensity and infrared luminous intensity in storage room；
Estimation block is configured to being estimated using volume to the storage room according to the visual intensity, obtains institute
The estimated value using volume is stated, the estimation block is configured to:
It is estimated using volume according to formula 1 described,
Formula 1:V '=SA × k,
In the formula 1, V ' is the estimated value using volume, and SA is the visual intensity that the detection components detect
Value, k are that the visible light of the detection components estimates coefficient；
Correction module is configured to use the modifying factor of volume, the correction module according to the infrared light Strength co-mputation
It is configured to:
The modifying factor using volume is calculated according to formula 2:
Formula 2:M=SP × J × T/SA,
In the formula 2, M is the modifying factor, and SP is the infrared light intensity value that the detection components detect, J is institute
The infrared light amendment constant of detection components is stated, T is the corresponding distance value of infrared luminous intensity that the detection components detect,
Described in k and J be to pre-save in the constant of the refrigerator, obtained by preparatory test statistics；And
Result-generation module, is configured to add up the estimated value and the modifying factor obtains the calculated value using volume.
6. device according to claim 5, further includes:
Trigger module is configured to: obtaining volume measurement trigger signal, the volume measurement trigger signal includes following any one
Or it is multinomial: timing signal, the door signal of the refrigerator, user's operation trigger signal.
7. device according to claim 5, further includes:
Execution module is configured to adjust the refrigerating state of the refrigerator according to the calculated value using volume and/or to user
Export the calculated value.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510219350.1A CN104897231B (en) | 2015-04-30 | 2015-04-30 | Refrigerator uses volume measurement method and apparatus |
| PCT/CN2015/088671 WO2016173168A1 (en) | 2015-04-30 | 2015-08-31 | Method and device for detecting used capacity of refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510219350.1A CN104897231B (en) | 2015-04-30 | 2015-04-30 | Refrigerator uses volume measurement method and apparatus |
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| CN104897231A CN104897231A (en) | 2015-09-09 |
| CN104897231B true CN104897231B (en) | 2019-05-31 |
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| CN201510219350.1A Active CN104897231B (en) | 2015-04-30 | 2015-04-30 | Refrigerator uses volume measurement method and apparatus |
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| WO (1) | WO2016173168A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104897232B (en) * | 2015-04-30 | 2018-10-12 | 青岛海尔股份有限公司 | The use volume measurement method of refrigerator and refrigerator |
| CN108168189A (en) * | 2017-12-25 | 2018-06-15 | 青岛海尔股份有限公司 | Refrigerating device and its control method |
| CN113063261B (en) * | 2020-01-02 | 2022-12-13 | 佛山市云米电器科技有限公司 | Refrigerator control method, refrigerator and computer-readable storage medium |
| CN111811181A (en) * | 2020-06-28 | 2020-10-23 | 董潇儒 | Artificial intelligence refrigerator |
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| CN103443566A (en) * | 2011-03-02 | 2013-12-11 | 松下电器产业株式会社 | Refrigerator |
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| WO2011154423A2 (en) * | 2010-06-08 | 2011-12-15 | Arcelik Anonim Sirketi | A cooling device |
| JP5316677B2 (en) * | 2011-05-09 | 2013-10-16 | パナソニック株式会社 | refrigerator |
| EP2767786B1 (en) * | 2011-10-14 | 2018-12-05 | Panasonic Corporation | Refrigerator |
| EP2851636B1 (en) * | 2012-05-18 | 2016-11-02 | Panasonic Intellectual Property Management Co., Ltd. | Refrigerator |
| JP5478685B2 (en) * | 2012-09-05 | 2014-04-23 | 三菱電機株式会社 | refrigerator |
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| CN104896863B (en) * | 2015-04-30 | 2018-03-23 | 青岛海尔股份有限公司 | The use volume measurement method of refrigerator and refrigerator |
| CN104807285B (en) * | 2015-04-30 | 2018-02-02 | 青岛海尔股份有限公司 | Refrigerator and its control method |
| CN104897232B (en) * | 2015-04-30 | 2018-10-12 | 青岛海尔股份有限公司 | The use volume measurement method of refrigerator and refrigerator |
| CN104896825B (en) * | 2015-04-30 | 2018-02-02 | 青岛海尔股份有限公司 | Refrigerator |
| CN104807284B (en) * | 2015-04-30 | 2018-02-02 | 青岛海尔股份有限公司 | Refrigerator |
| CN104807283B (en) * | 2015-04-30 | 2017-12-29 | 青岛海尔股份有限公司 | Refrigerator uses volume measurement method and apparatus |
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- 2015-04-30 CN CN201510219350.1A patent/CN104897231B/en active Active
- 2015-08-31 WO PCT/CN2015/088671 patent/WO2016173168A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103443566A (en) * | 2011-03-02 | 2013-12-11 | 松下电器产业株式会社 | Refrigerator |
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