CN102607076A - Device and method for accurately measuring temperature of electromagnetic oven - Google Patents

Device and method for accurately measuring temperature of electromagnetic oven Download PDF

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Publication number
CN102607076A
CN102607076A CN2012100457446A CN201210045744A CN102607076A CN 102607076 A CN102607076 A CN 102607076A CN 2012100457446 A CN2012100457446 A CN 2012100457446A CN 201210045744 A CN201210045744 A CN 201210045744A CN 102607076 A CN102607076 A CN 102607076A
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CN
China
Prior art keywords
temperature
electromagnetic oven
control module
power control
measuring equipment
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Pending
Application number
CN2012100457446A
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Chinese (zh)
Inventor
梁为磊
温城
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Midea Group Co Ltd
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Midea Group Co Ltd
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Publication date
Application filed by Midea Group Co Ltd filed Critical Midea Group Co Ltd
Priority to CN2012100457446A priority Critical patent/CN102607076A/en
Publication of CN102607076A publication Critical patent/CN102607076A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a device and a method for accurately measuring temperature of an electromagnetic oven. The device for accurately measuring temperature of the electromagnetic oven comprises a panel of the electromagnetic oven, a coil panel, a circuit board and a temperature sensing device, wherein the circuit board comprises a single chip microcomputer and a power control module; the temperature measuring device is arranged on the coil panel and connected with the circuit board; the temperature measuring device comprises at least two temperature sensors and a bottom surface thermal-insulating layer; and the different temperature sensors in the temperature measuring device are respectively connected with different temperature detection circuits on the circuit board. The method for accurately measuring temperature of the electromagnetic oven comprises the following steps: the single chip microcomputer receives and detects temperature detection signals output by each temperature detection circuit, and analyzes the signals; and the single chip microcomputer communicates with the power control module, detects a heating state, and controls the power control module to change the heating state according to an analysis result of the temperature detection signals simultaneously. According to the method and the device, disclosed by the invention, the temperature of cooking substances can be controlled accurately, and the disadvantages that the current technology cannot meet the use requirement of minus 20 DEG C and cannot accurately test at a high temperature which is above 200 DEG C are conquered.

Description

Accurate temperature measuring equipment of a kind of electromagnetic oven and method
Technical field
The invention belongs to household appliance technical field, be specifically related to the thermometry of electromagnetic oven, accurate temperature measuring equipment of particularly a kind of electromagnetic oven and method.
Background technology
At present; The pan temperature detection of electromagnetic oven product mainly adopts the mode of thermistor to realize; A thermistor promptly is set under ceramic wafer; Through temperature sensing circuit thing to be detected is carried out temperature detection, see the curve C among Fig. 3, only can accurately test the temperature range a ' ' about 100 ℃-b ' '.The environment for use temperature of general household electrical appliance is-20 ℃~40 ℃, and a ' ' temperature can't accurately be tested the low-temperature heat stage far above-20 ℃.In the actual cooking operation, mainly comprise oil and the two kinds of patterns to boil water of boiling.60 ℃ of major control holding temperatures and boiling temperature are 100 ℃ when to boil water.This scheme still can satisfy user demand.But when boiling oil, the general oil temperature that requires is accurately controlled in 180 ℃~250 ℃ scopes, and this scheme then can't satisfy user demand, influences user's use greatly, and Product Safety is generally lower.
Summary of the invention
The objective of the invention is to overcome the shortcoming of above-mentioned prior art and provide a kind of total temperature scope accurately to detect culinary art, and accurate temperature measuring equipment of electromagnetic oven and the scheme temperature controlled through control module.
The technical scheme that realizes the object of the invention is following: the accurate temperature measuring equipment of a kind of electromagnetic oven; The panel, coil panel, the circuit board that comprise electromagnetic oven; And be installed on the coil panel and be connected in the temperature measuring equipment of circuit board; It is characterized in that said temperature measuring equipment comprises the thermal insulation layer of at least two temperature sensors and bottom surface, the different temperature sensor in the temperature measuring equipment is connected to different temperature testing circuit on the circuit board.I.e. corresponding temperature sensing circuit of temperature sensor.
The foregoing circuit plate also includes single-chip microcomputer and power control module, and all temperature sensing circuits are connected with single-chip microcomputer in the circuit board, and said power control module also is connected on the single-chip microcomputer.
Further, the thermal insulation layer in the described temperature measuring equipment is soft heat-barrier material or mica sheet, can prevent that temperature measuring equipment and below circuit board from transmitting temperature, also can be used for the temperature measuring equipment supporting structure.
A kind of method that adopts the accurate temperature measuring equipment thermometric of above-mentioned electromagnetic oven is characterized in that, the single-chip microcomputer on the said circuit board receives and detect the temperature detection signal of each temperature sensing circuit output, and this signal is analyzed; Single-chip microcomputer simultaneously and the power control module communication, the status information of received power control module detects the heated condition of power control module, simultaneously according to the analysis result to temperature detection signal, the control power control module changes heated condition.
Further, the temperature detection signal of described temperature sensing circuit output is analog voltage or data signal.
The invention has the beneficial effects as follows: temperature measuring equipment adopts at least two temperature sensors, and its temperature and detection signal curve are seen curve A and the curve B among Fig. 3.The accurate thermometric temperature of curve A is in a~b scope, and the accurate thermometric temperature of curve B is in a '~b ' scope.Wherein b point temperature is more than or equal to the temperature of a ', and b ' some temperature is greater than 200 ℃, and a point temperature is less than 0 ℃.This scheme adopts at least two temperature sensing circuits that the different temperature section is accurately detected, and realizes the accurate detection of culinary art total temperature.Can realize treating the temperature of cooking thing accurately controls.
Description of drawings
Fig. 1 is the embodiment of the invention structure chart with two temperature sensors;
Fig. 2 is that the circuit with embodiment of the invention of two temperature sensors connects block diagram;
Fig. 3 is the temperature and the detection signal correlation curve figure of the prior art and the embodiment of the invention;
Fig. 4 is the embodiment of the invention circuit connection diagram with two temperature sensors.
The specific embodiment
As shown in Figure 1, the accurate temperature measuring equipment of a kind of electromagnetic oven comprises panel 1, coil panel 2, the circuit board 3 of electromagnetic oven, and is installed on the coil panel 2 and is connected in the temperature measuring equipment 4 of circuit board 3.Temperature measuring equipment 4 comprises the thermal insulation layer 43 of two temperature sensors 41,42 and bottom surface in the present embodiment; Temperature sensing circuit 31 on the temperature sensor 41 connecting circuit plates 3, temperature sensor 42 connects temperature sensing circuit 32.
As shown in Figure 2, said circuit board 3 also includes single-chip microcomputer 33 and power control module 34, and all temperature sensing circuits are connected with single-chip microcomputer 33 in the circuit board 3, and said power control module 34 also is connected on the single-chip microcomputer 33.
During work, single-chip microcomputer on the circuit board 3 33 receives and the temperature detection signal a and the temperature detection signal b of detected temperatures testing circuit 31 and temperature sensing circuit 32 outputs, and this two signal is analyzed.33 whiles and power control module 34 communications of single-chip microcomputer; The status information of received power control module 34; Heated condition to power control module 34 detects; According to the analysis result to temperature detection signal a and temperature detection signal b, control power control module 34 changes heated condition simultaneously, realizes accurately control.
The curve of actual temp detection signal is as shown in Figure 3, and curve C wherein is the temperature detection signal curve of prior art, only can accurately test the temperature range a ' ' about 100 ℃-b ' '.And the present invention adopts 31,32 pairs of different temperature sections of at least two temperature sensing circuits accurately to detect, and realizes the accurate detection of culinary art total temperature.When temperature was low, the thermometric curve was a curve A, can accurately test a-b scope; When temperature was higher, the thermometric curve was a curve B, can accurately test the temperature in a '~b ' scope.Obviously, the accurate temperature-measuring range of two temperature sensing circuits 31,32 is a-b ', and a point temperature is less than 0 ℃, and b ' some temperature is greater than 200 ℃.Therefore, both can accurately test, also can accurately test the heat stage to the low-temperature heat stage.Satisfy in the actual cooking operation, the temperature of boiling oil and two kinds of patterns to boil water is accurately tested, security of products is also higher.
As shown in Figure 4, the concrete connection of temperature sensing circuit is on the circuit board: the output of temperature sensing circuit 31 connects the input of single-chip microcomputer 33.In the temperature sensing circuit 31, temperature sensor 41 (R10) termination power Vcc, an end of an other terminating resistor R11, resistance R 12, capacitor C 10.Resistance R 11 1 termination temperature sensors 41 (R10), resistance R 12 and capacitor C 10, an other end ground connection GND.Resistance R 12 1 termination temperature sensors 41 (R10), resistance R 11, capacitor C 10, an other end connects the input port of single-chip microcomputer 33.One termination temperature sensor 41 (R10) of capacitor C 10, resistance R 11, resistance R 12, an other end ground connection GND.
The output of temperature sensing circuit 32 connects the input of single-chip microcomputer 33.In the temperature sensing circuit 32, temperature sensor 42 (R20) termination power Vcc, an end of an other terminating resistor R21, resistance R 22, capacitor C 20.Resistance R 21 1 termination temperature sensors 42 (R20), resistance R 22 and capacitor C 20, an other end ground connection GND.Resistance R 22 1 termination temperature sensors 42 (R20), resistance R 21, capacitor C 20, an other end connects the input port of single-chip microcomputer 33.One termination temperature sensor 42 (R20) of capacitor C 20, resistance R 21, resistance R 22, an other end ground connection GND.
Single-chip microcomputer 33 connects power control module 34 through PORT COM.Single-chip microcomputer 33 receives and the analog voltage of detected temperatures testing circuit 31 and temperature detection 32 outputs, and this magnitude of voltage is analyzed.33 whiles and power control module 34 communications of single-chip microcomputer; The status information of received power control module 34 detects the heated condition of power control module 34, simultaneously according to the analysis result to analog voltage; Control power control module 34 changes heated condition, realizes accurately control.

Claims (6)

1. accurate temperature measuring equipment of electromagnetic oven; The panel (1), coil panel (2), the circuit board (3) that comprise electromagnetic oven; And be installed on the temperature measuring equipment (4) that circuit board (3) were gone up and be connected in to coil panel (2); It is characterized in that said temperature measuring equipment (4) comprises at least two temperature sensors (41,42), the different temperature sensor of (4) (41,42) is connected to circuit board (3) and goes up different temperature testing circuit (31,32) in the temperature measuring equipment.
2. the accurate temperature measuring equipment of electromagnetic oven according to claim 1; It is characterized in that; Said circuit board (3) also includes single-chip microcomputer (33) and power control module (34); All temperature sensing circuits are connected with single-chip microcomputer (33) in the circuit board (3), and said power control module (34) also is connected on the single-chip microcomputer (33).
3. the accurate temperature measuring equipment of electromagnetic oven according to claim 1 is characterized in that, described temperature measuring equipment (4) bottom surface has thermal insulation layer (43).
4. the accurate temperature measuring equipment of electromagnetic oven according to claim 3 is characterized in that, the thermal insulation layer (43) in the described temperature measuring equipment (4) is soft heat-barrier material or mica sheet.
5. the method for the accurate thermometric of electromagnetic oven is characterized in that, the single-chip microcomputer (33) on the foregoing circuit plate (3) receives and detect the temperature detection signal of each temperature sensing circuit output, and this signal is analyzed; Single-chip microcomputer (33) while and power control module (34) communication; The status information of received power control module (34); Heated condition to power control module (34) detects; According to the analysis result to temperature detection signal, control power control module (34) changes heated condition simultaneously.
6. the method for the accurate thermometric of electromagnetic oven according to claim 5 is characterized in that, the temperature detection signal of described temperature sensing circuit output is analog voltage or data signal.
CN2012100457446A 2012-02-27 2012-02-27 Device and method for accurately measuring temperature of electromagnetic oven Pending CN102607076A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012100457446A CN102607076A (en) 2012-02-27 2012-02-27 Device and method for accurately measuring temperature of electromagnetic oven

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012100457446A CN102607076A (en) 2012-02-27 2012-02-27 Device and method for accurately measuring temperature of electromagnetic oven

Publications (1)

Publication Number Publication Date
CN102607076A true CN102607076A (en) 2012-07-25

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103196212A (en) * 2013-04-18 2013-07-10 中国扬子集团滁州扬子空调器有限公司 Indoor motor control circuit of brushless motor air-conditioning system
CN103812480A (en) * 2012-11-15 2014-05-21 美的集团股份有限公司 IGBT (Insulated Gate Bipolar Transistor) driving device
CN103857083A (en) * 2012-12-03 2014-06-11 美的集团股份有限公司 IGBT drive device for electromagnetic heating system
CN104359575A (en) * 2014-11-26 2015-02-18 华帝股份有限公司 Novel temperature sensor for gas stove
CN105375909A (en) * 2015-11-16 2016-03-02 许继集团有限公司 IGBT turn-on control method, IGBT turn-on control device, IGBT turn-off control method and IGBT turn-off control device
CN111385925A (en) * 2018-12-29 2020-07-07 佛山市顺德区美的电热电器制造有限公司 Electromagnetic cooking appliance and control method thereof

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CN202101298U (en) * 2011-06-04 2012-01-04 罗爱国 Embedded electric ceramic heater
CN202109540U (en) * 2011-04-20 2012-01-11 九阳股份有限公司 Wireless control electromagnetic oven assembly
CN202132995U (en) * 2011-06-28 2012-02-01 刘俊 Minitype induction-cooker control panel
CN202521670U (en) * 2012-02-27 2012-11-07 美的集团有限公司 Accurate temperature measuring device of induction cooker

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JPH077501B2 (en) * 1986-02-17 1995-01-30 花王株式会社 Magnetic recording medium
JP4077501B2 (en) * 2007-05-25 2008-04-16 三菱電機株式会社 Cooker
CN101334179A (en) * 2007-06-27 2008-12-31 株式会社东芝 Heating cooker
CN201416934Y (en) * 2009-06-08 2010-03-03 深圳市鑫汇科科技有限公司 Coil panel of electromagnetic oven
WO2011055279A1 (en) * 2009-11-03 2011-05-12 BSH Bosch und Siemens Hausgeräte GmbH Cook top comprising at least one temperature sensor
CN202109540U (en) * 2011-04-20 2012-01-11 九阳股份有限公司 Wireless control electromagnetic oven assembly
CN202101298U (en) * 2011-06-04 2012-01-04 罗爱国 Embedded electric ceramic heater
CN202132995U (en) * 2011-06-28 2012-02-01 刘俊 Minitype induction-cooker control panel
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103812480B (en) * 2012-11-15 2017-08-04 美的集团股份有限公司 A kind of IGBT drive devices
CN103812480A (en) * 2012-11-15 2014-05-21 美的集团股份有限公司 IGBT (Insulated Gate Bipolar Transistor) driving device
CN103857083A (en) * 2012-12-03 2014-06-11 美的集团股份有限公司 IGBT drive device for electromagnetic heating system
CN103196212B (en) * 2013-04-18 2015-09-09 中国扬子集团滁州扬子空调器有限公司 Brushless electric machine air-conditioning system indoor motor control circuit
CN103196212A (en) * 2013-04-18 2013-07-10 中国扬子集团滁州扬子空调器有限公司 Indoor motor control circuit of brushless motor air-conditioning system
CN104359575A (en) * 2014-11-26 2015-02-18 华帝股份有限公司 Novel temperature sensor for gas stove
CN105375909A (en) * 2015-11-16 2016-03-02 许继集团有限公司 IGBT turn-on control method, IGBT turn-on control device, IGBT turn-off control method and IGBT turn-off control device
CN105375909B (en) * 2015-11-16 2018-10-19 许继集团有限公司 Control method, device and IGBT shutdowns control method, device is connected in IGBT
CN111385925A (en) * 2018-12-29 2020-07-07 佛山市顺德区美的电热电器制造有限公司 Electromagnetic cooking appliance and control method thereof
CN111385925B (en) * 2018-12-29 2022-04-19 佛山市顺德区美的电热电器制造有限公司 Electromagnetic cooking appliance and control method thereof

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Applicant before: Meidi Group Co., Ltd.

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Application publication date: 20120725

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