CN101936554A - Wireless temperature measuring device for induction cooker - Google Patents

Wireless temperature measuring device for induction cooker Download PDF

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Publication number
CN101936554A
CN101936554A CN2010102681004A CN201010268100A CN101936554A CN 101936554 A CN101936554 A CN 101936554A CN 2010102681004 A CN2010102681004 A CN 2010102681004A CN 201010268100 A CN201010268100 A CN 201010268100A CN 101936554 A CN101936554 A CN 101936554A
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circuit
temperature
electromagnetic oven
measuring device
signal
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CN2010102681004A
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CN101936554B (en
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蔡才德
李永强
刘云
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Zhejiang Supor Electrical Appliances Manufacturing Co Ltd
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Zhejiang Supor Electrical Appliances Manufacturing Co Ltd
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  • Induction Heating Cooking Devices (AREA)

Abstract

The invention discloses a wireless temperature measuring device for an induction cooker. The wireless temperature measuring device comprises an induction cooker operating coil, a control circuit, at least one temperature acquisition circuit, a signal transmitting circuit, a signal receiving circuit and an induction cooker operation detecting circuit, wherein the induction cooker operation detecting circuit is electrically connected with the temperature acquisition circuit, and comprises an inductance coil; the inductance coil is arranged in the electromagnetic field area of the induction cooker operating coil; and the operation detecting circuit is used for converting a voltage signal induced by the inductance coil into a high level capable of being recognized by the temperature acquistion circuit so as to start the temperation acquistion and data transmission operations of the temperature circuit, or a low level capable of being recognized by the temperature acquistion circuit so as to close the temperation acquistion and data transmission operations of the temperature circuit, or a low level capable of being recognized by the temperature acquistion circuit so as to delay the time limit and then to close the temperation acquistion and data transmission operations of the temperature circuit. The wireless temperature measuring device of the invention is provided with the operation detecting circuit, and utilizes the magnetic field of the induction cooker operating coil to start the temperature acquisition circuit, thereby being capable of improving the product reliability and prolonging the battery life.

Description

A kind of electromagnetic oven wireless temperature measuring device
 
Technical field
The invention belongs to the electromagentic furnace technology field, be specifically related to the wireless temperature measuring device that electromagnetic oven is used.
Background technology
Existing electromagnetic oven heating utensil, great majority are to adopt the thermistor that is installed in Inside coil dish centre to come detected temperatures.This thermistor is close to the ceramic wafer lower surface by resiliency supported, electromagnetic heating device is to make by electromagnetic induction principle to be subjected to the heating of heat load bottom, heat is by being subjected to heat load to pass to ceramic wafer, conduct to thermistor again by ceramic wafer, sensed temperature can not directly reflect the true temperature in the pot like this.The influence of some heater members in the electromagnetic oven and cooling fan is bigger in addition, so shortcoming such as this thermometric mode exists that temperature-sensitive is slow, thermometric is inaccurate and reliability is low pan distortion or electromagnetic oven often occur and damages.
For this reason, Chinese invention patent CN1239115 (open day on 02 01st, 2006) provides a kind of wireless temperature measurement pan, be comprise a pot body, temperature sensing circuit and temperature-control circuit, also comprise one group of wireless launcher and radio receiver, described temperature sensing circuit is located at pot surface and is electrically connected with wireless launcher, and described radio receiver is electrically connected with temperature-control circuit.Because of the temperature sensing circuit in this invention wireless temperature measurement pan is to be directly arranged on pot surface, can promptly and accurately temperature information be issued radio receiver by the wireless launcher that is electrically connected with it, realize accuracy control over temperature by the temperature-control circuit that is electrically connected with radio receiver then.But the prior art causes temperature collection circuit and radio receiving transmitting module or circuit in running order always, and the electric energy of consuming cells has shortened service time of battery greatly.
Summary of the invention
The present invention is directed to the problem that prior art exists, its purpose be to provide a kind of simple in structure, realize easily the electromagnetic oven wireless temperature measuring device of energy saving.
For achieving the above object, the present invention adopts following solution:
A kind of electromagnetic oven wireless temperature measuring device, comprise the electromagnetic oven actuating coil, control circuit, at least one temperature collection circuit, signal sending circuit and signal receiving circuit, temperature collection circuit output termination signal sending circuit, signal receiving circuit output connection control circuit, control circuit and electromagnetic oven actuating coil are electrically connected, temperature collection circuit is launched the temperature signal that obtains with wireless mode, signal receiving circuit will be sent to control circuit from the signal of signal transtation mission circuit, it is characterized in that this electromagnetic oven also comprises an electromagnetic oven operation detection circuit with wireless temperature measuring device, electromagnetic oven operation detection circuit and temperature collection circuit are electrically connected, this electromagnetic oven operation detection circuit comprises an inductance coil, this inductance coil places in the electromagnetic field zone of electromagnetic oven actuating coil, and the operation detection circuit goes the temperature acquisition and the data transmission work of closing temperature Acquisition Circuit after time limit that transfers that high level deactivation that temperature collection circuit can discern or low level go to close or low level is delayed time in order to the voltage signal with inductance coil induction.
Further, described electromagnetic oven operation detection circuit comprises inductance coil, first resistance, second resistance, diode and electric capacity, first resistance string is associated between inductance coil one end and the diode anode, diode cathode is connected to the input/output port of temperature collection circuit, the other end of inductance coil is connected to ground, second resistance be connected again between diode anode and the ground after electric capacity is in parallel.
Described temperature collection circuit comprises temperature sensor, and this temperature sensor is installed in position, the as close as possible the bottom of a pan, pan surface.
Compared to existing technology, beneficial effect of the present invention is:
(1) because the present invention has the operation detection circuit, utilizes the magnetic field start-up temperature Acquisition Circuit of electromagnetic oven actuating coil, can improve reliability of products, prolong battery service time.
(2) the electromagnetic oven actuating coil is started working the back with regard to the start-up temperature collection, and temperature sense is quick, can reflect variation of temperature in real time.
(3) thermometric is more accurate, whole performance and the control effect that promotes product.
Description of drawings
Fig. 1 is a theory diagram of the present invention.
Fig. 2 is a circuit diagram of the present invention.
Fig. 3 is for using electromagnetic oven of the present invention cross section cut-away view
Among the figure, 1 is the electromagnetic oven wireless temperature measuring device; 2 is the electromagnetic oven actuating coil; 3 is the crystallite panel; 4 is control circuit; 5 are the heating pan; 6 is electromagnetic oven; 7 is signal receiving circuit; 8 is induction coil; 9 is electromagnetic oven operation detection circuit; 10 is temperature collection circuit; 11 is signal sending circuit.
 
The specific embodiment
Come the present invention is further specified below in conjunction with specific embodiment, but do not limit the invention to these specific embodiment.One skilled in the art would recognize that the present invention contained in claims scope all alternatives, improvement project and the equivalents that may comprise.
Embodiment 1
Electromagnetic oven of the present invention comprises with wireless temperature measuring device, comprise electromagnetic oven actuating coil 2, control circuit 4, a temperature collection circuit 10, signal sending circuit 11 and signal receiving circuit 7, temperature collection circuit 10 output termination signal sending circuits 11, signal receiving circuit 7 output connection control circuits 4, control circuit 4 is electrically connected with electromagnetic oven actuating coil 2, temperature collection circuit 10 will obtain that temperature signal is converted to high-frequency electric wave and with wireless mode emission, signal receiving circuit 7 will be converted into temperature signal and be sent to control circuit 4 from the high-frequency electric wave of signal transtation mission circuit from temperature collection circuit.
This electromagnetic oven also comprises an electromagnetic oven operation detection circuit 9 with wireless temperature measuring device, electromagnetic oven operation detection circuit 9 is electrically connected with temperature collection circuit 10, this electromagnetic oven operation detection circuit such as Fig. 2, comprise inductance coil, first resistance R 4, second resistance R 5, diode Dfa and capacitor C 6, first resistance R 4 is connected between inductance coil 8 one ends and the diode Dfa anode, diode Dfa negative electrode is connected to the input/output port of temperature collection circuit 10, the other end of inductance coil 8 is connected to ground GND, is connected between diode Dfa anode and the ground after second resistance R 5 and capacitor C 6 are in parallel again.This inductance coil 8 places in the electromagnetic field zone of electromagnetic oven actuating coil, can be positioned at the electromagnetic oven actuating coil directly over, also be to be positioned at side top, as long as can sense signal.
The wireless temperature measuring device course of work of the present invention is as follows:
In electromagnetic oven work, the voltage that electromagnetic oven operation detection circuit inductance coil 8 produces by way of electromagnetic induction, through first resistance R, 4 current limlitings and diode Dfa rectification, again behind the RC filter filtering through second resistance R 5 and capacitor C 6 formations, the high level that the formation temperature Acquisition Circuit can be discerned, this high level signal transfers to the input/output port of temperature collection circuit 10, temperature collection circuit 10 is according to the high level signal of this input/output port, and start-up temperature collection and data send; If electromagnetic oven work or not, inductance coil 8 just can not induce the electromagnetic field of electromagnetic oven actuating coil 2, will export a low level and give input/output port, temperature collection circuit is according to the low level signal of this input/output port, close the work of whole temperature collection circuit after time-delay a period of time, the time of time-delay can set up on their own as required.
In this circuit, 4 metering functions of first resistance R, diode Dfa plays rectified action; The RC wave filter that second resistance R 5 and capacitor C 6 constitute plays filter action.First resistance R 4 and second resistance R 5 are generally got 2K, and diode can be common diodes such as In4148, if select for use the lower diode effect of fast recovery and tube voltage drop better.Capacitor C 6 can be common ceramic disc capacitor 104 and gets final product.
Temperature collection circuit 10 can be the single-chip microcomputer with A/D modular converter and input/output port, is a kind of known prior art.Can select integrated package MPC1652A for use, the A/D modular converter is contained in its inside; Also can be the uPD78F9212MA single-chip microcomputer of NEC, the single-chip microcomputer of this type all be present mature technique and extensive use.
With reference to Fig. 2, shown in Figure 3, Fig. 2 is a schematic block circuit diagram of the present invention, and Fig. 3 is a kind of electromagnetic oven of the present invention wireless temperature measuring device circuit theory diagrams.As shown in the figure, electromagnetic oven operation detection circuit 9 is connected with temperature collection circuit 10, after starting working, electromagnetic oven 6 can generate an electromagnetic field by the coil panel 2 of electromagnetic oven, electromagnetic oven operation detection circuit inductance coil 8 produces voltage by way of electromagnetic induction, output to temperature collection circuit 10 through forming a high level behind the diode Dfa, thereby start whole wireless temperature measuring device work; At this time begin, temperature collection circuit 10 is transferred to signal sending circuit 11 and sends in the signal receiving circuit after the temperature signal that collects is handled.Signal sending circuit adopts the frequency work of 433MHz, also can adjust the RF communication frequency according to actual conditions.Whole electromagnetic oven adopts battery that power supply is provided with wireless temperature measuring device, when electromagnetic oven quits work, electromagnetic oven operation detection circuit 9 detects the electromagnetic field that produces less than coil panel 2 will export a low level to temperature collection circuit 10, promptly close whole wireless temperature measuring device behind the time-delay certain hour, save the power consumption of battery, prolong battery service time.
Structural section figure with reference to application shown in Figure 3 wireless temperature measuring device of the present invention.1 is electromagnetic oven wireless temperature measuring device of the present invention, is installed in the handling position of electromagnetic oven with pan, and the temperature sensor that temperature measurement circuit contains is installed in the position in the surperficial as close as possible the bottom of a pan of pan.Electromagnetic oven 6 can generate an electromagnetic field when work, and electromagnetic oven operation detection circuit 9 can transmit a high level to temperature collection circuit 10 after detecting electromagnetic field.After electromagnetic oven is started working, wireless temperature measuring device also begins startup work, temperature in the pan is sampled and sent to signal receiving circuit 7 in real time, signal receiving circuit sends control circuit 4 to after receiving temperature data, and control circuit is taked the control that responds according to the temperature signal that feeds back.When electromagnetic oven is not worked, just transmit a low level and give temperature collection circuit 10, close whole electromagnetic oven wireless temperature measuring device, play conserve battery power, extend working time.
Carry out temperature sampling by electromagnetic oven with wireless temperature measuring device, thermometric accurately, in time, and is safe and reliable, can break through traditional electromagnetic oven cooking technology, realizes accurate temperature controlling, promotes the culinary art effect of food.For example can realize that electromagnetic oven is cooked automatically, the function of Baoshang, some electric cooker series products such as cook congee, reach its culinary art effect.

Claims (3)

1. electromagnetic oven wireless temperature measuring device, comprise the electromagnetic oven actuating coil, control circuit, at least one temperature collection circuit, signal sending circuit and signal receiving circuit, temperature collection circuit output termination signal sending circuit, signal receiving circuit output connection control circuit, control circuit and electromagnetic oven actuating coil are electrically connected, temperature collection circuit is launched the temperature signal that obtains with wireless mode, signal receiving circuit will be sent to control circuit from the signal of signal transtation mission circuit, it is characterized in that this electromagnetic oven also comprises an electromagnetic oven operation detection circuit with wireless temperature measuring device, electromagnetic oven operation detection circuit and temperature collection circuit are electrically connected, this electromagnetic oven operation detection circuit comprises an inductance coil, this inductance coil places in the electromagnetic field zone of electromagnetic oven actuating coil, and the operation detection circuit goes the temperature acquisition and the data transmission work of closing temperature Acquisition Circuit after time limit that transfers that high level deactivation that temperature collection circuit can discern or low level go to close or low level is delayed time in order to the voltage signal with inductance coil induction.
2. electromagnetic oven wireless temperature measuring device as claimed in claim 1, it is characterized in that described electromagnetic oven operation detection circuit comprises inductance coil, first resistance, second resistance, diode and electric capacity, first resistance string is associated between inductance coil one end and the diode anode, diode cathode is connected to the input/output port of temperature collection circuit, the other end of inductance coil is connected to ground, second resistance be connected again between diode anode and the ground after electric capacity is in parallel.
3. electromagnetic oven wireless temperature measuring device as claimed in claim 1 is characterized in that temperature collection circuit comprises temperature sensor, and this temperature sensor is installed in position, the as close as possible the bottom of a pan, pan surface.
CN201010268100.4A 2010-08-31 2010-08-31 A kind of wireless temperature measuring device for induction cooker Active CN101936554B (en)

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102178464A (en) * 2011-04-09 2011-09-14 佛山市顺德区美的电热电器制造有限公司 Temperature measuring device and temperature measuring method for induction cooker pot
CN102226539A (en) * 2011-04-21 2011-10-26 浙江苏泊尔家电制造有限公司 Induction cooker and temperature measurement method thereof
CN102306309A (en) * 2011-08-05 2012-01-04 佛山市顺德区美的电热电器制造有限公司 Wireless identification device and method used between heating device and cooker
CN102356994A (en) * 2011-08-05 2012-02-22 佛山市顺德区美的电热电器制造有限公司 Communication method for induction heating device and cooker
CN103263224A (en) * 2013-05-10 2013-08-28 浙江绍兴苏泊尔生活电器有限公司 Electric heating device, electric cooker and wireless temperature control method
WO2015154237A1 (en) * 2014-04-09 2015-10-15 史伯梅 Induction heating assembly, induction cooker and cookware
CN105222184A (en) * 2014-06-17 2016-01-06 吴燕珊 A kind of can the electromagnetic oven of thermometric
CN106705145A (en) * 2016-12-15 2017-05-24 汕头市鼎翔电子科技有限公司 Intelligent electricity-saving induction cooker and electricity-saving control method
CN106921220A (en) * 2015-12-28 2017-07-04 佛山市顺德区美的电热电器制造有限公司 For the wireless power communicating circuit and method of pot
WO2017113426A1 (en) * 2015-12-28 2017-07-06 佛山市顺德区美的电热电器制造有限公司 Wireless power supply communication circuit for electric cooking pot, electric cooking pot, and method
CN109100037A (en) * 2018-07-25 2018-12-28 南京磊智电子科技有限公司 Applied to the cooking bottom temperature measurement method of electromagnetic oven, apparatus and system
CN109327928A (en) * 2018-09-20 2019-02-12 中国空气动力研究与发展中心超高速空气动力研究所 Induction heating power inductance coil earthing or grounding means and earthing method
US10819153B2 (en) 2015-12-28 2020-10-27 Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co., Ltd. Wireless power supply communication circuit for electric cooking pot, electric cooking pot and method for the same

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EP1154675B1 (en) * 2000-05-11 2002-09-18 Schott Glas Device and method to control the cooktop surface of a glass ceramic plate
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CN101192335A (en) * 2006-11-25 2008-06-04 浙江苏泊尔家电制造有限公司 Wireless emission accurate temperature measurement circuit for pot
CN201160763Y (en) * 2008-03-14 2008-12-10 白军民 Water temperature and level observing and controlling circuit of teakettle matching electromagnetic oven
CN201858680U (en) * 2010-08-31 2011-06-08 浙江苏泊尔家电制造有限公司 Wireless temperature measurement device of induction cooker

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1154675B1 (en) * 2000-05-11 2002-09-18 Schott Glas Device and method to control the cooktop surface of a glass ceramic plate
US20060030912A1 (en) * 2002-01-18 2006-02-09 Apsara Medical Corporation System, method and apparatus for evaluating tissue temperature
CN1545963A (en) * 2003-12-12 2004-11-17 林志鹏 Wireless temperature measurement cooking pot
CN101193464A (en) * 2006-11-25 2008-06-04 浙江苏泊尔家电制造有限公司 Induction temperature sensing pan
CN101192335A (en) * 2006-11-25 2008-06-04 浙江苏泊尔家电制造有限公司 Wireless emission accurate temperature measurement circuit for pot
CN201160763Y (en) * 2008-03-14 2008-12-10 白军民 Water temperature and level observing and controlling circuit of teakettle matching electromagnetic oven
CN201858680U (en) * 2010-08-31 2011-06-08 浙江苏泊尔家电制造有限公司 Wireless temperature measurement device of induction cooker

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102178464A (en) * 2011-04-09 2011-09-14 佛山市顺德区美的电热电器制造有限公司 Temperature measuring device and temperature measuring method for induction cooker pot
CN102226539A (en) * 2011-04-21 2011-10-26 浙江苏泊尔家电制造有限公司 Induction cooker and temperature measurement method thereof
CN102226539B (en) * 2011-04-21 2015-07-15 浙江苏泊尔家电制造有限公司 Induction cooker and temperature measurement method thereof
CN102306309A (en) * 2011-08-05 2012-01-04 佛山市顺德区美的电热电器制造有限公司 Wireless identification device and method used between heating device and cooker
CN102356994A (en) * 2011-08-05 2012-02-22 佛山市顺德区美的电热电器制造有限公司 Communication method for induction heating device and cooker
CN102356994B (en) * 2011-08-05 2013-12-18 佛山市顺德区美的电热电器制造有限公司 Communication method for induction heating device and cooker
CN103263224B (en) * 2013-05-10 2016-08-24 浙江绍兴苏泊尔生活电器有限公司 Electric heating device, electric cooker and wireless temperature control method
CN103263224A (en) * 2013-05-10 2013-08-28 浙江绍兴苏泊尔生活电器有限公司 Electric heating device, electric cooker and wireless temperature control method
WO2015154237A1 (en) * 2014-04-09 2015-10-15 史伯梅 Induction heating assembly, induction cooker and cookware
CN105222184A (en) * 2014-06-17 2016-01-06 吴燕珊 A kind of can the electromagnetic oven of thermometric
CN106921220A (en) * 2015-12-28 2017-07-04 佛山市顺德区美的电热电器制造有限公司 For the wireless power communicating circuit and method of pot
WO2017113426A1 (en) * 2015-12-28 2017-07-06 佛山市顺德区美的电热电器制造有限公司 Wireless power supply communication circuit for electric cooking pot, electric cooking pot, and method
US10819153B2 (en) 2015-12-28 2020-10-27 Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co., Ltd. Wireless power supply communication circuit for electric cooking pot, electric cooking pot and method for the same
CN106705145A (en) * 2016-12-15 2017-05-24 汕头市鼎翔电子科技有限公司 Intelligent electricity-saving induction cooker and electricity-saving control method
CN109100037A (en) * 2018-07-25 2018-12-28 南京磊智电子科技有限公司 Applied to the cooking bottom temperature measurement method of electromagnetic oven, apparatus and system
CN109327928A (en) * 2018-09-20 2019-02-12 中国空气动力研究与发展中心超高速空气动力研究所 Induction heating power inductance coil earthing or grounding means and earthing method

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