CN102006690A - Method for acquiring temperatures in cooking cavity of microwave oven - Google Patents
Method for acquiring temperatures in cooking cavity of microwave oven Download PDFInfo
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- CN102006690A CN102006690A CN2009103063251A CN200910306325A CN102006690A CN 102006690 A CN102006690 A CN 102006690A CN 2009103063251 A CN2009103063251 A CN 2009103063251A CN 200910306325 A CN200910306325 A CN 200910306325A CN 102006690 A CN102006690 A CN 102006690A
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- temperature
- microwave oven
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- temperature sensor
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- 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
- H05B6/6447—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors
- H05B6/645—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors using temperature sensors
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- Electromagnetism (AREA)
- Control Of High-Frequency Heating Circuits (AREA)
- Electric Ovens (AREA)
Abstract
The invention relates to a method for acquiring temperatures in a cooking cavity of a microwave oven. The method comprises the following steps of: reading and storing initial temperature values of n infrared temperature sensors arranged in the cooking cavity of the microwave oven; acquiring and storing temperature values of the n infrared temperature sensors according to set time; subtracting the initial temperature value initially acquired from each infrared temperature sensor from the temperature value acquired from the infrared temperature sensor currently to acquire a difference value when temperatures are acquired every time; setting a comparing reference temperature value according to the temperature values acquired in the step 2 of the n infrared temperature sensors; comparing the temperature difference values acquired in the step 3 of the n infrared temperature sensors with the comparing reference value set in the step 4; identifying the sensors at effective positions; tracking the temperature values fed back by the sensors at the effective positions in real time; and regulating the supplied temperatures according to the temperature values. The optimal temperature for heating food can be supplied to the cavity of the microwave oven by an acquisition method for changing the temperatures fed back by the infrared temperature sensors.
Description
Technical field
The present invention relates to temperature acquisition method in a kind of cooking cavity of microwave oven.Particularly relate to a kind of interior temperature acquisition method of a kind of cooking cavity of microwave oven that can gather the interior temperature of cooking cavity of microwave oven in real time and distinguish food, container and glass rotating disk temperature.
Background technology
In general, microwave oven be food is put into and is sealed after, to the magnetron energized that can produce high frequency waves, and with consequent microwave irradiation to food, make the molecule that constitutes the culinary art thing 1 internal vibration in second 2,400,000,000 5 thousand ten thousand times, the cookware that utilizes the frictional heat that produced that food is cooked whereby.
Microwave oven is controlled temperature easily, because each position of food can generate heat simultaneously and can evenly cook all size and variform food, and has the cooking time of saving and multiple advantage such as easy and simple to handle, so be widely used in general family.
As shown in Figure 1, microwave oven has the outward appearance of general lineal hexahedral shape, is by external shell 10 that forms the microwave oven outward appearance and door 20 integral body that constitute that can shield external shell 10 fronts selectively.
Top and the two sides of external shell 10 are integrally formed, and are fixedly connected on bottom panel and the rear board (not shown).
In the inside of microwave oven, be formed with the cavity 12 of the lineal hexahedral shape of the front openings that can put into food for cooking food, after the container of food is equipped with in the placement of the inside of cavity 12, microwave irradiation to food, is cooked food with this.
In the inside bottom surface of described cavity 12, have the pallet 14 that can support the container that food is housed, pallet 14 links with the motor (not shown) that produces revolving force and rotates, and evenly cooks the food that is positioned on the pallet 14 thus.
The right side of cavity 12 or upside have the control part 30 that comprises a plurality of action buttons 32 and display part 34.Control part 30 is connected with a plurality of parts that are installed in microwave oven inside, thus the controlled microwave stove by these parts of control.
The place ahead of cavity 12 openings is provided with door 20.Door 20 is that benchmark is provided with rotationally with the hinge 22 that is positioned at one side top and the bottom, cavity 12 fronts, thus the front of shielding cavity 12 selectively.Door 20 has shielded after the cavity 12, and the microwave that is produced during microwave oven work just can not leak into the outside of described cavity 12.
Be provided with approximately in the back of door 20 and be "
" door lock 24 of shape vertical section.Door lock 24 will be inserted into the door lock that is formed at cavity 12 fronts and insert 16 li in mouth.Door lock insert mouthfuls 16 be formed on door lock 24 corresponding positions on, have vertically long rectangular shape during from forward observation.
The rear side that inserts mouth 16 at door lock is equipped with micro switch (not shown).Micro switch (not shown) plays the effect that optionally makes lamp (not shown) energising, and door lock 24 is inserted into door lock and inserts 16 li in mouth, controls the power supply of turn-on lamp (not shown) by the interference of door lock 24 ends.Forwards rotary door 20 and with door lock 24 from door insert mouthfuls 16 draw after, the interference of 24 pairs of micro switch of door lock (not shown) can be removed, thus the power supply of turn-on lamp (not shown) and light lamp (not shown).
Usually, collection and the control for temperature in the microwave oven cavity is by being arranged on the infrared temperature sensor that is used to detect the temperature in the microwave oven cavity of upside in the microwave oven cavity.It specifically is the infrared temperature sensor that the upside distribution is provided with n collecting temperature in microwave oven cavity, n is the integer greater than 1, when n infrared temperature sensor is installed, the center of the rotating disk in the central point of n infrared temperature sensor and the microwave oven cavity is corresponding, the Temperature Feedback of diverse location is given control part in the microwave oven cavity that n infrared temperature sensor will collect in real time, and control part is adjusted temperature controlling in the microwave oven cavity according to the temperature of being fed back.But, prior art is just gathered temperature whole in the cavity to the temperature acquisition method in the microwave oven cavity, the temperature to the best of food heating comprises food, container and the overall temperature of glass rotating disk, can not distinguish the temperature of food, so also just can not be provided in microwave oven cavity.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of and can gather temperature and the interior temperature acquisition method of a kind of cooking cavity of microwave oven of distinguishing food, container and glass rotating disk temperature in the cooking cavity of microwave oven in real time.
The technical solution adopted in the present invention is: temperature acquisition method in a kind of cooking cavity of microwave oven includes following steps:
1) at first read and store the initial temperature value that is arranged on n infrared temperature sensor in the cooking cavity of microwave oven, described n is the natural number more than or equal to 8;
2) be arranged on the temperature value of n infrared temperature sensor in the cooking cavity of microwave oven by setting-up time collection and storage;
When 3) gathering the temperature of n infrared temperature sensor, all the temperature value of each infrared temperature sensor of this collection is deducted the initial temperature value of this infrared temperature sensor of first collection at every turn, thus the difference of obtaining;
4) set reference temperature value relatively according to the temperature value of n the infrared temperature sensor that step 2 collected;
5) temperature gap with the resulting n of step 3 infrared temperature sensor compares with the benchmark value that step 4 sets respectively, the transducer of identification active position, the temperature value that real-time tracking active position transducer is fed back, and the size of the temperature that is provided according to this temperature value adjustment.
The described setting-up time of step 2 is the temperature value of a n infrared temperature sensor of collection in per 0.5 second.
The difference of the described accounting temperature of step 3 is to be calculated as follows:
Δ Ti=Ti-Ti0, wherein Ti is the current temperature value of being gathered, Ti0 is the last temperature value of being gathered, i=1,2 ... 8.
The fiducial temperature of setting the described comparison of step 4 is Δ Tc, selects Δ Tc=(Δ T4+ Δ T5)/2, and wherein, Δ T4 is the temperature gap of the 4th transducer, and Δ T5 is the temperature gap of the 5th transducer.
In the described comparison of step 5, when the temperature gap Δ Ti of certain infrared temperature sensor 〉=benchmark value Δ Tc, the temperature of this infrared temperature sensor is an effective temperature, otherwise the temperature of this infrared temperature sensor is an ineffective temperature.
Temperature acquisition method in a kind of cooking cavity of microwave oven of the present invention, need not change any structure in the former microwave oven cavity, just by changing acquisition method to the temperature that infrared temperature sensor fed back, just can effectively distinguish out the temperature of food, the temperature of container and the temperature of glass rotating disk, thereby the temperature to the best of food heating can be provided in microwave oven cavity from the temperature in the real-time microwave oven cavity that collects.
Description of drawings
Fig. 1 is the microwave oven structure schematic diagram;
Fig. 2 is the flow chart of temperature acquisition method of the present invention.
Embodiment
Below, be described with reference to the accompanying drawings of the present invention
As shown in Figure 1, temperature acquisition method in a kind of cooking cavity of microwave oven of the present invention is characterized in that, includes following steps:
1) read and store the initial temperature value that is arranged on n infrared temperature sensor in the cooking cavity of microwave oven, described n is the natural number more than or equal to 8;
At first the software/hardware to system carries out initialization, reads and store the initial temperature value that is arranged on n infrared temperature sensor in the cooking cavity of microwave oven then.
2) be arranged on the temperature value of n infrared temperature sensor in the cooking cavity of microwave oven by setting-up time collection and storage;
Described setting-up time is the temperature value of a n infrared temperature sensor of collection in per 0.5 second, upgrades a secondary data, and guarantees the real-time collection of system in promptly per 0.5 second.
When 3) gathering the temperature of n infrared temperature sensor, all the temperature value of each infrared temperature sensor of this collection is deducted the initial temperature value of this infrared temperature sensor of first collection at every turn, thus the difference of obtaining;
The difference of above-mentioned accounting temperature is to be calculated as follows:
Δ Ti=Ti-Ti0, wherein Ti is the current temperature value of being gathered, Ti0 is the last temperature value of being gathered, i=1,2 ... 8.
4) set reference temperature value relatively according to the temperature value of n the infrared temperature sensor that step 2 collected;
The fiducial temperature of setting described comparison is Δ Tc, select Δ Tc=(Δ T4+ Δ T5)/2, wherein, Δ T4 is the temperature gap of the 4th transducer, Δ T5 is the temperature gap of the 5th infrared temperature sensor, this is because normally food is placed on the centre position of rotating disk, and the 4th and the 5th infrared temperature sensor is the transducer that is arranged at the centre position.
5) temperature gap with the resulting n of step 3 infrared temperature sensor compares with the benchmark value Δ Tc that step 4 sets respectively, the transducer of identification active position, in described comparison, when the temperature gap Δ Ti of certain infrared temperature sensor 〉=benchmark value Δ Tc, the temperature of this infrared temperature sensor is an effective temperature, i.e. the temperature of food, otherwise, the temperature of this infrared temperature sensor is an ineffective temperature, i.e. temperature beyond the food.The temperature value that real-time tracking active position transducer is fed back, and effectively control the food heating-up temperature according to this temperature value.
Circulation is carried out repeatedly as mentioned above, thereby can gather and judge the situation of food heating in real time, controls the food heating-up temperature in real time.
Claims (5)
1. the interior temperature acquisition method of cooking cavity of microwave oven is characterized in that, includes following steps:
1) at first read and store the initial temperature value that is arranged on n infrared temperature sensor in the cooking cavity of microwave oven, described n is the natural number more than or equal to 8;
2) be arranged on the temperature value of n infrared temperature sensor in the cooking cavity of microwave oven by setting-up time collection and storage;
When 3) gathering the temperature of n infrared temperature sensor, all the temperature value of each infrared temperature sensor of this collection is deducted the initial temperature value of this infrared temperature sensor of first collection at every turn, thus the difference of obtaining;
4) set reference temperature value relatively according to the temperature value of n the infrared temperature sensor that step 2 collected;
5) temperature gap with the resulting n of step 3 infrared temperature sensor compares with the benchmark value that step 4 sets respectively, the transducer of identification active position, the temperature value that real-time tracking active position transducer is fed back, and the size of the temperature that is provided according to this temperature value adjustment.
2. temperature acquisition method in a kind of cooking cavity of microwave oven according to claim 1 is characterized in that, the described setting-up time of step 2 is the temperature value of a n infrared temperature sensor of collection in per 0.5 second.
3. temperature acquisition method in a kind of cooking cavity of microwave oven according to claim 1 is characterized in that the difference of the described accounting temperature of step 3 is to be calculated as follows:
Δ Ti=Ti-Ti0, wherein Ti is the current temperature value of being gathered, Ti0 is the last temperature value of being gathered, i=1,2 ... n.
4. temperature acquisition method in a kind of cooking cavity of microwave oven according to claim 1, it is characterized in that, the fiducial temperature of setting the described comparison of step 4 is Δ Tc, select Δ Tc=(Δ Tn/2+ Δ Tn/2+1)/2, wherein, Δ T n/2 is the temperature gap of n/2 transducer, and Δ T n/2+1 is the temperature difference t value of n/2+1 transducer.
5. temperature acquisition method in a kind of cooking cavity of microwave oven according to claim 1, it is characterized in that, in the described comparison of step 5, when the temperature gap Δ Ti of certain infrared temperature sensor 〉=benchmark value Δ Tc, the temperature of this infrared temperature sensor is an effective temperature, otherwise the temperature of this infrared temperature sensor is an ineffective temperature.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009103063251A CN102006690B (en) | 2009-08-29 | 2009-08-29 | Method for acquiring temperatures in cooking cavity of microwave oven |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009103063251A CN102006690B (en) | 2009-08-29 | 2009-08-29 | Method for acquiring temperatures in cooking cavity of microwave oven |
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| CN102006690A true CN102006690A (en) | 2011-04-06 |
| CN102006690B CN102006690B (en) | 2013-11-27 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105496216A (en) * | 2015-11-25 | 2016-04-20 | 广东美的厨房电器制造有限公司 | Device and method for determining food temperature, temperature control system and cooking device |
| CN108664445A (en) * | 2018-04-16 | 2018-10-16 | 深圳和而泰小家电智能科技有限公司 | A kind of temperature computation method and electronic equipment |
| CN108917980A (en) * | 2018-05-09 | 2018-11-30 | 海尔优家智能科技（北京）有限公司 | A kind of micro-wave temperature detection method, device, medium and computer equipment |
| CN109696257A (en) * | 2017-10-24 | 2019-04-30 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heating cooking utensil and its temp measuring method and device |
| CN111897381A (en) * | 2020-07-30 | 2020-11-06 | 珠海格力电器股份有限公司 | Oven control method and device and oven |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1450310A (en) * | 2002-04-09 | 2003-10-22 | 乐金电子(天津)电器有限公司 | Unfreezing control method for microwave oven |
| JP2005146261A (en) * | 2003-10-20 | 2005-06-09 | Toray Ind Inc | Injection-molded product |
-
2009
- 2009-08-29 CN CN2009103063251A patent/CN102006690B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1450310A (en) * | 2002-04-09 | 2003-10-22 | 乐金电子(天津)电器有限公司 | Unfreezing control method for microwave oven |
| JP2005146261A (en) * | 2003-10-20 | 2005-06-09 | Toray Ind Inc | Injection-molded product |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105496216A (en) * | 2015-11-25 | 2016-04-20 | 广东美的厨房电器制造有限公司 | Device and method for determining food temperature, temperature control system and cooking device |
| CN105496216B (en) * | 2015-11-25 | 2018-07-03 | 广东美的厨房电器制造有限公司 | Determine the device and method, temperature control system and cooker of the temperature of food |
| CN109696257A (en) * | 2017-10-24 | 2019-04-30 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heating cooking utensil and its temp measuring method and device |
| CN109696257B (en) * | 2017-10-24 | 2020-10-30 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heating cooking utensil and temperature measuring method and device thereof |
| CN108664445A (en) * | 2018-04-16 | 2018-10-16 | 深圳和而泰小家电智能科技有限公司 | A kind of temperature computation method and electronic equipment |
| CN108917980A (en) * | 2018-05-09 | 2018-11-30 | 海尔优家智能科技（北京）有限公司 | A kind of micro-wave temperature detection method, device, medium and computer equipment |
| CN111897381A (en) * | 2020-07-30 | 2020-11-06 | 珠海格力电器股份有限公司 | Oven control method and device and oven |
| CN111897381B (en) * | 2020-07-30 | 2021-08-20 | 珠海格力电器股份有限公司 | Oven control method and device and oven |
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| CN102006690B (en) | 2013-11-27 |
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