CN108870472B - Microwave oven weighing method and device and microwave oven - Google Patents
Microwave oven weighing method and device and microwave oven Download PDFInfo
- Publication number
- CN108870472B CN108870472B CN201810439724.4A CN201810439724A CN108870472B CN 108870472 B CN108870472 B CN 108870472B CN 201810439724 A CN201810439724 A CN 201810439724A CN 108870472 B CN108870472 B CN 108870472B
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- microwave oven
- weight
- weight sensor
- weighing
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- 238000005303 weighing Methods 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 20
- 230000008859 change Effects 0.000 claims description 5
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 2
- 230000003213 activating effect Effects 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 7
- 238000005259 measurement Methods 0.000 description 7
- 239000011521 glass Substances 0.000 description 5
- 230000006870 function Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010411 cooking Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/66—Circuits
- H05B6/68—Circuits for monitoring or control
- H05B6/687—Circuits for monitoring or control for cooking
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/62—Over or under weighing apparatus
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/80—Apparatus for specific applications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2206/00—Aspects relating to heating by electric, magnetic, or electromagnetic fields covered by group H05B6/00
- H05B2206/04—Heating using microwaves
Abstract
The invention provides a microwave oven weighing method and device and a microwave oven. Relates to the field of intelligent household appliances; the problem that accurate weighing cannot be realized in microwave ovens with various structural designs is solved. The device comprises: and the weight sensor is arranged below the bottom plate of the main body of the microwave oven and is used for measuring the total weight of the whole main body and the contents of the microwave oven, and the weight sensor is electrically connected with a controller of the microwave oven. The technical scheme provided by the invention is suitable for heating equipment such as a microwave oven and the like, and realizes the weight weighing of the universal microwave oven.
Description
Technical Field
The invention relates to the field of intelligent household appliances, in particular to a microwave oven weighing method and device and a microwave oven.
Background
The existing weighing scheme of the articles in the microwave oven mainly comprises the following two steps:
1. the weight sensor is added on the glass turntable base of the microwave oven, so that the weight value change on the glass turntable can be measured.
2. A weighing device is arranged on the microwave oven support legs, and one is arranged on each of three or four support legs.
For the first mode, due to the different internal structures of the microwave oven cavity, a glass turntable structure and a pure platform structure without a turntable exist. For a turntable-free structure, the first approach is not applicable.
For the second mode, the weight distribution is not balanced to four supporting feet in the use of the microwave oven, the gravity center is not in the right center of the whole oven when food is not placed, and the weight deviation can bring errors, so that the measurement result is inaccurate. Although the influence of the unbalance can be reduced by changing the layout of the support legs and using a plurality of sensors, the weight of the food is difficult to accurately measure because the error of the final weight measurement is the sum of the errors of the plurality of sensors, and the problem of inaccurate measurement results still exists.
In summary, the existing microwave oven weighing scheme cannot realize accurate weighing in microwave ovens of various structural designs.
Disclosure of Invention
The present invention is directed to solving the problems described above.
According to a first aspect of the present invention there is provided a microwave oven weighing apparatus comprising a weight sensor disposed beneath a floor of a microwave oven body for measuring the total weight of the entire microwave oven body and contents, the weight sensor being in electrical communication with a controller of the microwave oven.
Preferably, the apparatus further comprises a bracket mounted to the microwave oven body floor, and the weight sensor is fixed to the microwave oven body floor through the bracket.
Preferably, the support comprises a bottom mounting groove and a reinforcing support, and the reinforcing support is arranged in the bottom mounting groove.
Preferably, a reinforcing spacer is interposed between the reinforcing bracket and the weight sensor.
Preferably, the apparatus further comprises a heat insulating plate interposed between the bottom plate of the microwave oven body and the supporter.
Preferably, the shape and area of the heat insulating plate are the same as those of the bottom plate of the microwave oven body.
Preferably, the device further comprises a base connected to the weight sensor, and a reinforcing gasket is arranged between the base and the weight sensor.
The invention also provides a microwave oven which comprises a microwave oven main body and is characterized by further comprising the microwave oven weighing device, wherein a weight sensor of the microwave oven weighing device is electrically connected with a controller in the microwave oven main body.
The invention also provides a microwave oven weighing method, which uses the microwave oven weighing device, and comprises the following steps:
when the suspected article placing operation is detected, starting the weight sensor to acquire the total weight of the microwave oven main body and the content;
subtracting a preset microwave oven dead weight from the total weight to obtain the content weight.
Preferably, before the step of starting the weight sensor to obtain the total weight of the microwave oven body and the contents when the suspected article placing operation is detected, the method further comprises:
upon detection of the door opening and/or closing of the microwave oven, or,
upon receipt of a heating command, or,
when the sensor detects that an article is put in the microwave oven cavity, or,
when the weight sensor detects a weight change,
and judging that the suspected article placing operation occurs.
The invention provides a weighing method and device for a microwave oven and the microwave oven, wherein a weight sensor for measuring the total weight of the whole microwave oven body and contents is added below a bottom plate of the microwave oven body, the weight sensor of the weighing device for the microwave oven is electrically connected with a controller in the microwave oven body, and when the suspected article placing operation is detected, the weight sensor is started to acquire the total weight of the microwave oven body and the contents, and the preset microwave oven dead weight is subtracted from the total weight to acquire the weight of the contents. The weighing device realizes the weighing of the universal microwave oven and solves the problem that accurate weighing cannot be realized in microwave ovens with various structural designs.
Other characteristic features and advantages of the invention will become apparent from the following description of exemplary embodiments, which is to be read with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention. In the drawings, like reference numerals are used to identify like elements. The drawings, which are included in the description, illustrate some, but not all embodiments of the invention. Other figures can be derived from these figures by one of ordinary skill in the art without undue effort.
Fig. 1 exemplarily shows a structure of a weighing device for a microwave oven according to a first embodiment of the present invention;
fig. 2 schematically shows a flow of a weighing method for a microwave oven according to a second embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be arbitrarily combined with each other.
The weighing scheme of the weight sensor is added on the glass turntable base of the microwave oven, and the existing microwave oven has different internal structures, so that the glass turntable structure and the pure platform structure without the turntable exist. For a turntable-free structure, the first approach is not applicable.
The scheme of adding sensors on the supporting legs of the microwave oven for weighing is that the weight distribution is not balanced to the four supporting legs in the use of the microwave oven, and the gravity center is not at the right center of the whole oven when food is not placed, so that the deviation can cause errors, and the measurement result is inaccurate. Although the influence of the unbalance can be reduced by changing the layout of the support legs and using a plurality of sensors, the weight of the food is difficult to accurately measure because the error of the final weight measurement is the sum of the errors of the plurality of sensors, and the problem of inaccurate measurement results still exists.
In order to solve the problems, the embodiment of the invention provides a microwave oven weighing method and device and a microwave oven. The weight sensor capable of being used for weighing is added outside the main body of the microwave oven, and the weight of the articles in the microwave oven is finally obtained by combining software calculation, so that the universal weight weighing for the microwave oven is realized, and the problem that accurate weighing cannot be realized in the microwave ovens with various structural designs is solved.
First, an embodiment of the present invention will be described with reference to the drawings.
The embodiment of the invention provides a weighing device of a microwave oven, the structure of the device is shown in figure 1, and the device comprises:
a weight sensor 103 disposed under the bottom plate 101 of the microwave oven body for measuring the total weight of the entire microwave oven body 102 and contents, the weight sensor 103 being electrically connected to a controller of the microwave oven.
Preferably, the apparatus further comprises a bracket 104, the bracket 104 is mounted on the microwave oven body chassis 101, and the weight sensor 103 is fixed to the microwave oven body chassis 101 through the bracket 104.
Preferably, the bracket 104 includes a bottom mounting groove 1041 and a reinforcing bracket 1042, which is disposed in the bottom mounting groove. The bottom installation groove 1041 is connected to the microwave oven body floor 101 through at least one connection portion 1043. The main function of the reinforcing bracket 1042 is to ensure that the weight sensor 103 is in stable contact with the bottom plate 101 of the main body of the microwave oven, and the shape, size, material and other properties of the reinforcing bracket 1042 can be adjusted according to the design requirements of the product under the condition of comprehensively considering the weight, cost and fixing effect of the product, such as the X-shape shown in fig. 1.
Preferably, a reinforcing spacer 105 is disposed between the reinforcing bracket 1042 and the weight sensor 103 to ensure that the weight sensor 103 does not contact the reinforcing bracket 1042 after being deformed under pressure. The bottom mounting groove 1041 and the reinforcing bracket 1042 support the upper microwave oven body 102 together to prevent the bottom from being deformed for a long time. The bottom mounting groove 1041 can further enhance the supporting strength of the reinforcing bracket 1042.
Preferably, the apparatus further comprises a heat insulating plate 106 interposed between the microwave oven body chassis 101 and the stand 104.
Preferably, the thermal insulation plate 106 has the same shape and area as the microwave oven body chassis 101. The heat shield 106 prevents heat from being diffused from the microwave oven body 102 to the portion of the weighing apparatus of the microwave oven, and improves the stability and reliability of the operation of the weight sensor 103
Preferably, the device further comprises a base 107 connected to the weight sensor 103, and a reinforcing spacer 108 is disposed between the base 107 and the weight sensor 103, so as to ensure that the weight sensor 103 does not contact the base 107 after being deformed under pressure, and the measurement result is affected. The outer bottom surface of the base 107 may be a pure plane or a plane including a plurality of legs, which is not limited in this embodiment of the present invention, and the base 107 is mainly used for contacting with a platform in a use environment such as a desktop, and the base structure capable of achieving this function belongs to the protection scope of the present invention.
Preferably, the weight sensor 103 in the embodiment of the present invention is specifically a cantilever type weight sensor, and two ends of the type of sensor are respectively a fixed end and a bearing end. The fixed end is used for fixing the whole sensor and is connected with the base 107, and specifically, can be fixedly connected through a screw; the bearing ends are connected with the reinforcing brackets 1042. When the pressure on the load-bearing end changes, the weight sensor 103 outputs a corresponding analog electric signal, and the analog electric signal can be converted into a weight digital signal after passing through the amplifying and AD acquisition circuit. The calculation by software is finally called weight value.
The microwave oven weighing device can be integrated in a microwave oven, and a weight sensor of the microwave oven weighing device is electrically connected with a controller in the microwave oven main body.
A second embodiment of the present invention will be described with reference to the accompanying drawings.
The embodiment of the invention provides a microwave oven weighing method, and a process for weighing articles in a microwave oven by using the method is shown in a figure 2, and comprises the following steps:
step 201, when detecting the suspected article placing operation, starting the weight sensor to acquire the total weight of the microwave oven main body and the contents;
in this step, when the following event occurs, it is determined that the suspected article placement operation has occurred:
1. the door of the microwave oven is detected to be open and/or closed. That is, it is considered that an article may be put in when the door of the microwave oven is opened or closed, or when the opening-before-closing operation occurs for a certain time.
2. A heating instruction is received. In the embodiment of the invention, the heating instruction can be an instruction for starting various heating functions or automatic cooking modes of the microwave oven, and can be any heating mode such as microwaves, light waves and the like. The instruction may be generated by a user operating a control panel of the microwave oven, by voice input, or by a client transmitting the instruction via a communication means.
3. The sensor in the microwave oven cavity detects that an article is put in. In the embodiment of the invention, a sensor can be added in the microwave oven cavity for sensing the obstacle, and the article is judged to be put in when the article appears in the heating area.
4. The weight sensor detects a weight change. In the embodiment of the invention, when the weight sensor is a cantilever type weight sensor, the weight change can be sensed, so that weighing is started.
Step 202, subtracting a preset microwave oven dead weight from the total weight to obtain the content weight;
the self weight of the microwave oven can be preset in a memory of the microwave oven, or an initial weight M1 can be measured as the self weight of the microwave oven by starting a weight sensor after power-on. The total weight M2 is measured when a suspected item-in operation is detected. It is determined whether M2 and M1 are the same, and the result of M2-M1 is taken as the content weight when the values are different. The value of the weight of the content is transmitted back to the controller (main control chip) for calculation.
The embodiment of the invention provides a microwave oven weighing method, a device and a microwave oven, wherein a weight sensor for measuring the total weight of the whole microwave oven body and contents is added below a bottom plate of the microwave oven body, the weight sensor of the microwave oven weighing device is electrically connected with a controller in the microwave oven body, when the operation of suspected articles is detected, the weight sensor is started to acquire the total weight of the microwave oven body and the contents, and the preset microwave oven dead weight is subtracted from the total weight to acquire the weight of the contents. The weighing device realizes the weighing of the universal microwave oven and solves the problem that accurate weighing cannot be realized in microwave ovens with various structural designs.
The weight sensor is arranged below the microwave oven main body, and is suitable for weighing the whole microwave oven main body, and is suitable for microwave ovens with various structures; only one sensor is used for testing, so that errors are reduced, and the accurate weight of food put into the microwave oven by a user can be obtained.
In order to ensure the long-term stable and normal operation of the sensor, the design of a bracket, a heat insulation layer and the like is realized. The support on the load bearing end of the weight sensor can effectively shield microwaves emitted by the waveguide tube and heat emitted by the furnace chamber, so that the working accuracy and stability of the weight sensor can be ensured. Because the weight sensor needs to bear pressure for a long time, the reinforced bracket structure solves the problems of dispersion of pressure under the long-time pressure and structural torsion resistance, and is the basis of long-time use stability.
The above description may be implemented alone or in various combinations and these modifications are within the scope of the present invention.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting. Although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. The weighing device of the microwave oven is characterized by comprising a weight sensor which is arranged below a bottom plate of the main body of the microwave oven and is used for measuring the total weight of the whole main body and contents of the microwave oven, wherein the weight sensor is electrically connected with a controller of the microwave oven;
the device also comprises
The bracket is arranged on the main body bottom plate of the microwave oven, and the weight sensor is fixed on the main body bottom plate of the microwave oven through the bracket;
a heat insulation plate arranged between the bottom plate of the microwave oven main body and the bracket;
and the base is connected with the weight sensor.
2. The microwave oven weighing apparatus of claim 1 wherein said bracket includes a bottom mounting slot and a reinforcing bracket, said reinforcing bracket being disposed within said bottom mounting slot.
3. The microwave oven weighing apparatus of claim 2 wherein a reinforcing spacer is interposed between said reinforcing bracket and said weight sensor.
4. The microwave oven weighing apparatus of claim 1 wherein said thermal insulation plate is the same shape and area as said microwave oven body floor.
5. The microwave oven weighing apparatus of claim 1 wherein a reinforcing spacer is interposed between said base and said weight sensor.
6. A microwave oven comprising a microwave oven body, characterized in that the microwave oven further comprises a microwave oven weighing device according to any one of claims 1-5, the weight sensor of the microwave oven weighing device being electrically connected to a controller in the microwave oven body.
7. A method of weighing a microwave oven using a microwave oven weighing apparatus as claimed in any one of claims 1 to 5, comprising:
when the suspected article placing operation is detected, starting the weight sensor to acquire the total weight of the microwave oven main body and the content;
subtracting a preset microwave oven dead weight from the total weight to obtain the content weight.
8. The method of weighing a microwave oven according to claim 7, wherein before the step of activating the weight sensor to obtain the total weight of the microwave oven body and contents when the operation of suspected articles is detected, further comprising:
upon detection of the door opening and/or closing of the microwave oven, or,
upon receipt of a heating command, or,
when the sensor detects that an article is put in the microwave oven cavity, or,
when the weight sensor detects a weight change,
and judging that the suspected article placing operation occurs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810439724.4A CN108870472B (en) | 2018-05-09 | 2018-05-09 | Microwave oven weighing method and device and microwave oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810439724.4A CN108870472B (en) | 2018-05-09 | 2018-05-09 | Microwave oven weighing method and device and microwave oven |
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| Publication Number | Publication Date |
|---|---|
| CN108870472A CN108870472A (en) | 2018-11-23 |
| CN108870472B true CN108870472B (en) | 2024-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810439724.4A Active CN108870472B (en) | 2018-05-09 | 2018-05-09 | Microwave oven weighing method and device and microwave oven |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4724292A (en) * | 1984-07-11 | 1988-02-09 | Sharp Kabushiki Kaisha | Microwave oven with food weight measurement |
| WO2003002953A1 (en) * | 2001-06-28 | 2003-01-09 | Seb S.A. | Cooking oven comprising a weighing device |
| CN103925972A (en) * | 2013-01-16 | 2014-07-16 | 上海朝辉压力仪器有限公司 | Weight sensor, microwave oven with same and container with same |
| CN105832126A (en) * | 2016-05-30 | 2016-08-10 | 广东美的厨房电器制造有限公司 | Cooking appliance |
| CN208523017U (en) * | 2018-05-09 | 2019-02-19 | 海尔优家智能科技（北京）有限公司 | A kind of micro-wave oven weighing device and micro-wave oven |
-
2018
- 2018-05-09 CN CN201810439724.4A patent/CN108870472B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4724292A (en) * | 1984-07-11 | 1988-02-09 | Sharp Kabushiki Kaisha | Microwave oven with food weight measurement |
| WO2003002953A1 (en) * | 2001-06-28 | 2003-01-09 | Seb S.A. | Cooking oven comprising a weighing device |
| CN103925972A (en) * | 2013-01-16 | 2014-07-16 | 上海朝辉压力仪器有限公司 | Weight sensor, microwave oven with same and container with same |
| CN105832126A (en) * | 2016-05-30 | 2016-08-10 | 广东美的厨房电器制造有限公司 | Cooking appliance |
| CN208523017U (en) * | 2018-05-09 | 2019-02-19 | 海尔优家智能科技（北京）有限公司 | A kind of micro-wave oven weighing device and micro-wave oven |
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| Publication number | Publication date |
|---|---|
| CN108870472A (en) | 2018-11-23 |
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