CN102006690B - 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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- CN102006690B CN102006690B CN2009103063251A CN200910306325A CN102006690B CN 102006690 B CN102006690 B CN 102006690B CN 2009103063251 A CN2009103063251 A CN 2009103063251A CN 200910306325 A CN200910306325 A CN 200910306325A CN 102006690 B CN102006690 B CN 102006690B
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- temperature
- microwave oven
- infrared
- value
- infrared temperature
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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 a kind of method for acquiring temperatures in cooking cavity of microwave oven.Particularly relate to a kind of can the Real-time Collection cooking cavity of microwave oven in temperature and distinguish a kind of method for acquiring temperatures in cooking cavity of microwave oven of food, container and glass rotary disc temperature.
Background technology
In general, micro-wave oven be food is put into and is sealed after, to the magnetron that can produce high frequency waves, switch on power, and by consequent microwave irradiation to food, make to form the molecule of culinary art thing 1 internal vibration in second 2,400,000,000 5 thousand ten thousand times, the cookware that utilizes whereby the heat of friction that produces to cook food.
Micro-wave oven is easily controlled temperature, 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 the multiple advantage such as easy and simple to handle, so be widely used in general family.
As shown in Figure 1, micro-wave oven has the outward appearance of general lineal hexahedral shape, is by the external shell 10 that forms the micro-wave oven outward appearance and door 20 integral body that form that can shield selectively external shell 10 fronts.
Top and the two sides of external shell 10 are integrally formed, and are fixedly connected on bottom panel and rear panel (not shown).
In the inside of micro-wave 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 inside placement 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 and rotates with the motor (not shown) that produces revolving force, and evenly culinary art is positioned over the food on 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 arranged on microwave oven internal, by controlling these parts, controls micro-wave oven thus.
The place ahead of cavity 12 openings is provided with door 20.Door 20 be take the hinge 22 that is positioned at cavity 12 Yi Ce top and the bottom, front and is arranged rotationally as benchmark, thus the front of shielding cavity 12 selectively.After door 20 had shielded cavity 12, the microwave produced during micro-wave oven work just can not leak into the outside of described cavity 12.
In the back of door 20, be provided with approximately and be
The door lock 24 of shape vertical section.Door lock 24 will be inserted into 16 li of door lock insert ports that are formed at cavity 12 fronts.Door lock insert port 16 is formed on the position corresponding with door lock 24, during from forward observation, has vertically long rectangular shape.
Rear side in door lock insert port 16 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 16 li of door lock insert ports, by the interference of door lock 24 ends, controls the power supply of turn-on lamp (not shown).Forwards rotary door 20 and by door lock 24 after door insert port 16 is drawn, 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 put bright light (not shown).
Usually, collection and the control for temperature in microwave oven cavity is by being arranged on the infrared temperature sensor for detection of the temperature in microwave oven cavity of upside in microwave oven cavity.Specifically upside distributes and to be provided with the infrared temperature sensor of n collecting temperature in microwave oven cavity, n is greater than 1 integer, when n infrared temperature sensor is installed, the center of the rotating disk in the central point of n infrared temperature sensor and microwave oven cavity is corresponding, in the microwave oven cavity that n infrared temperature sensor arrives Real-time Collection, the temperature feedback of diverse location is to control part, and control part is adjusted the control to temperature in microwave oven cavity according to the temperature of feeding back.But, prior art just gathers temperature whole in cavity to the temperature acquisition method in microwave oven cavity, comprise the temperature that food, container and glass rotary disc are overall, can not distinguish the temperature of food, so also just can not in microwave oven cavity, provide the temperature to the best of food heating.
Summary of the invention
Technical matters to be solved by this invention is, provide a kind of can the Real-time Collection cooking cavity of microwave oven in temperature and distinguish a kind of method for acquiring temperatures in cooking cavity of microwave oven of food, container and glass rotary disc temperature.
The technical solution adopted in the present invention is: a kind of method for acquiring temperatures in 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 cooking cavity of microwave oven, described n is more than or equal to 8 natural number;
2) by setting-up time collection storage, be arranged on the temperature value of n infrared temperature sensor in cooking cavity of microwave oven;
While 3) gathering the temperature of n infrared temperature sensor, all the temperature value of each infrared temperature sensor of this collection is deducted to the initial temperature value of this infrared temperature sensor of first collection at every turn, thus the difference of obtaining;
The temperature value of n the infrared temperature sensor 4) collected according to step 2 is set reference temperature value relatively;
5) temperature gap of the resulting n of step 3 infrared temperature sensor is compared with the benchmark value that step 4 sets respectively, the sensor of identification active position, the temperature value that real-time follow-up active position sensor feeds back, and the size of the temperature 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 every 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 gathered, Ti0 is the last temperature value gathered, i=1,2 ... 8.
The reference 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 sensor, and Δ T5 is the temperature gap of the 5th sensor.
Step 5 described relatively in, when the temperature gap Δ Ti of certain infrared temperature sensor >=benchmark value Δ Tc, the temperature of this infrared temperature sensor is effective temperature, otherwise the temperature of this infrared temperature sensor is ineffective temperature.
A kind of method for acquiring temperatures in cooking cavity of microwave oven of the present invention, do not need to change any structure in former microwave oven cavity, just by changing the acquisition method of the temperature that infrared temperature sensor is fed back, just can effectively distinguish the temperature of food, the temperature of container and the temperature of glass rotary disc from the temperature in the real-time microwave oven cavity collected, thereby can in microwave oven cavity, provide the temperature to the best of food heating.
The accompanying drawing explanation
Fig. 1 is the structural representation of micro-wave oven;
Fig. 2 is the process flow diagram 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, a kind of method for acquiring temperatures in 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 cooking cavity of microwave oven, described n is more than or equal to 8 natural number;
At first the software/hardware of system carried out to initialization, then read and store the initial temperature value that is arranged on n infrared temperature sensor in cooking cavity of microwave oven.
2) by setting-up time collection storage, be arranged on the temperature value of n infrared temperature sensor in cooking cavity of microwave oven;
Described setting-up time is the temperature value of a n infrared temperature sensor of collection in every 0.5 second, upgrades a secondary data in namely every 0.5 second, guarantees the Real-time Collection of system.
While 3) gathering the temperature of n infrared temperature sensor, all the temperature value of each infrared temperature sensor of this collection is deducted to 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 gathered, Ti0 is the last temperature value gathered, i=1,2 ... 8.
The temperature value of n the infrared temperature sensor 4) collected according to step 2 is set reference temperature value relatively;
The reference 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 sensor, Δ T5 is the temperature gap of the 5th infrared temperature sensor, this is because normally food is placed on to the centre position of rotating disk, and the 4th and the 5th infrared temperature sensor is the sensor that is arranged at centre position.
5) temperature gap of the resulting n of step 3 infrared temperature sensor is compared with the benchmark value Δ Tc that step 4 sets respectively, the sensor of identification active position, described relatively in, when the temperature gap Δ Ti of certain infrared temperature sensor >=benchmark value Δ Tc, the temperature of this infrared temperature sensor is effective temperature, i.e. the temperature of food, otherwise, the temperature of this infrared temperature sensor is ineffective temperature, i.e. temperature beyond food.The temperature value that real-time follow-up active position sensor feeds back, and effectively control the food heating-up temperature according to this temperature value.
Iterative cycles carries out as mentioned above, thereby can Real-time Collection and judge the situation of food heating, controls in real time the food heating-up temperature.
Claims (2)
1. a method for acquiring temperatures in 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 cooking cavity of microwave oven, described n is more than or equal to 8 natural number;
2) by setting-up time collection storage, be arranged on the temperature value of n infrared temperature sensor in cooking cavity of microwave oven;
While 3) gathering the temperature of n infrared temperature sensor, all the temperature value of each infrared temperature sensor of this collection is deducted to the initial temperature value of this infrared temperature sensor of first collection at every turn, thus the difference of obtaining;
The temperature value of n the infrared temperature sensor 4) collected according to step 2 is set reference temperature value relatively;
5) temperature gap of the resulting n of step 3 infrared temperature sensor is compared with the benchmark value that step 4 sets respectively, the sensor of identification active position, the temperature value that real-time follow-up active position sensor feeds back, and the size of the temperature provided according to this temperature value adjustment.
2. a kind of method for acquiring temperatures in 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 every 0.5 second.
3. a kind of method for acquiring temperatures in 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 T
i=T
i-T
I0, T wherein
iFor the current temperature value gathered, T
I0For the first temperature value gathered, i=1,2 ... n.
4. a kind of method for acquiring temperatures in cooking cavity of microwave oven according to claim 1, is characterized in that, step 5 described relatively in, as the temperature gap Δ T of certain infrared temperature sensor
i>=benchmark value Δ T
cThe time, the temperature of this infrared temperature sensor is effective temperature, otherwise the temperature of this infrared temperature sensor is ineffective temperature.
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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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CN2009103063251A CN102006690B (en) | 2009-08-29 | 2009-08-29 | Method for acquiring temperatures in cooking cavity of microwave oven |
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CN102006690A CN102006690A (en) | 2011-04-06 |
CN102006690B true CN102006690B (en) | 2013-11-27 |
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Families Citing this family (5)
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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 |
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 |
CN108664445B (en) * | 2018-04-16 | 2022-11-25 | 深圳和而泰小家电智能科技有限公司 | Temperature calculation method and electronic equipment |
CN108917980B (en) * | 2018-05-09 | 2021-07-16 | 海尔优家智能科技(北京)有限公司 | Microwave oven temperature detection method, device, medium and computer equipment |
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 |
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 |
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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 |
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