CN114698175B - AI magnetron system suitable for domestic microwave oven - Google Patents

AI magnetron system suitable for domestic microwave oven Download PDF

Info

Publication number
CN114698175B
CN114698175B CN202210276320.4A CN202210276320A CN114698175B CN 114698175 B CN114698175 B CN 114698175B CN 202210276320 A CN202210276320 A CN 202210276320A CN 114698175 B CN114698175 B CN 114698175B
Authority
CN
China
Prior art keywords
magnetron
signal
microwave
detection
power source
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202210276320.4A
Other languages
Chinese (zh)
Other versions
CN114698175A (en
Inventor
李海龙
陈信岑
殷勇
毕亮杰
蒙林
王彬
袁学松
张平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
University of Electronic Science and Technology of China
Guangdong Witol Vacuum Electronic Manufacture Co Ltd
Original Assignee
University of Electronic Science and Technology of China
Guangdong Witol Vacuum Electronic Manufacture Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by University of Electronic Science and Technology of China, Guangdong Witol Vacuum Electronic Manufacture Co Ltd filed Critical University of Electronic Science and Technology of China
Priority to CN202210276320.4A priority Critical patent/CN114698175B/en
Publication of CN114698175A publication Critical patent/CN114698175A/en
Application granted granted Critical
Publication of CN114698175B publication Critical patent/CN114698175B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • H05B6/6447—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/02—Stoves or ranges heated by electric energy using microwaves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F24C7/081—Arrangement or mounting of control or safety devices on stoves
    • 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
    • H05B6/664—Aspects related to the power supply of the microwave heating 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
    • H05B6/66—Circuits
    • H05B6/68—Circuits for monitoring or control
    • H05B6/687—Circuits for monitoring or control for cooking

Abstract

The invention discloses an AI magnetron system suitable for a household microwave oven, belonging to the technical field of magnetrons in vacuum electronic devices. The system comprises a magnetron, a synthesized power source and control module, a characteristic parameter detection module and a data acquisition and processing module. The invention adopts a power source synthesized based on the duty ratio of a pulse magnetron to emit a detection signal when the magnetron is not in operation, detects the working voltage current, the temperature, the detection signal and the reflection signal of an article to be heated through a characteristic parameter detection module, then collects the detection information and determines the type of the article to be heated through a data acquisition processing module, sends a corresponding control instruction to a synthesized power source and a control module, and changes the working state of the magnetron through changing a microwave heating signal so as to enable the article to be heated to achieve an ideal heating effect. The invention simplifies the cooking operation of the user and can achieve ideal cooking effect.

Description

AI magnetron system suitable for domestic microwave oven
Technical Field
The invention belongs to the technical field of magnetrons in vacuum electronic devices, and particularly relates to an AI magnetron system suitable for a household microwave oven.
Background
With the development of electronic technology, semiconductor devices have basically replaced electric vacuum devices in low power, low frequency, low voltage applications, but electric vacuum devices, especially magnetrons, still have absolute advantages in high power applications. If the magnetron can be combined with the artificial intelligence technology, the use effect of the magnetron is increased, the magnetron occupies a leading position in more civil and military aspects, and the application prospect is greatly widened.
In recent years, with the increasing living standard of people, modern kitchen appliances become household appliances which are indispensable in people daily life. For household appliances for heating some foods, a microwave oven is widely used. The microwave oven is a household appliance for heating food and beverage in a cavity by utilizing electromagnetic energy in a microwave frequency band, and comprises a microwave oven body, a microwave working cavity (resonant cavity) arranged in the oven body, an oven door, and a microwave generating and controlling device comprising a microwave generator, a transformer, a cooling fan, a capacitor, a control circuit (board) and a control panel thereof; the principle of heating food is that the microwave generator (including magnetron and waveguide) converts electric energy into microwave energy and transmits the microwave energy to the working cavity, a distributed microwave field is established in the working cavity, and when the food is in the microwave field, the food absorbs the microwave energy to heat the inside and the outside of the food at the same time, so that the heating speed is high.
The central frequency of a magnetron widely used in a microwave oven is 2450MHz, the continuous wave power can reach 1kW, higher power output can be provided, the efficiency can reach 80%, and the microwave source is one of the existing microwave sources with the lowest cost.
In the using process of the traditional microwave oven, manual operation through experience is needed, parameters such as heating time and heating power are set for cooking food, the operation is complicated, and due to the influence of external factors such as different cooking materials and different experience of operators, the food cannot achieve an ideal effect.
Disclosure of Invention
The present invention is directed to overcoming the disadvantages of the prior art and providing an AI magnetron system suitable for use in a domestic microwave oven. The magnetron system can confirm the kind of the cooking article by detecting the voltage current and the temperature of the magnetron of the microwave oven, the detection signal and the reflection signal in the system, and then sends a control command to the magnetron to change the working state of the magnetron. The invention simplifies the cooking operation of the user and can achieve ideal cooking effect.
The technical scheme of the invention is as follows:
an AI magnetron system suitable for a household microwave oven is characterized by comprising a magnetron, a synthetic power source and control module, a characteristic parameter detection module and a data acquisition and processing module.
The synthetic power source and control module is used for providing a microwave working signal for the magnetron; the microwave working signal is generated by coupling a microwave heating signal and a direct current pulse detection signal which are alternated in a time-sharing manner; the microwave heating signal is used for exciting a magnetron to normally heat and work, and the direct current pulse detection signal is used for exciting the magnetron to generate a detection signal; and the detection signal enters the cavity of the microwave oven and then reacts with the heated object to generate a reflection signal.
The characteristic parameter detection module is used for detecting voltage, current and temperature of a magnetron and detecting microwave signals in a system, wherein the microwave signals comprise detection signals and reflection signals; and sending the detection information to a data acquisition processing module.
The data acquisition processing module is used for acquiring and processing the received detection information to obtain a detection result, and then sending a corresponding control instruction to the synthetic power source and the control module according to the detection result; the synthesis power source and the control module change the microwave heating signal according to the control instruction, thereby changing the heating working state of the magnetron.
Furthermore, the synthesized power source and control module comprises a timing generator, a high-voltage pulse modulator A, a high-voltage pulse modulator B, a magnetron pulse power supply, a direct current pulse power supply and a 2-in-1 output device; the time sequence generator provides 2 paths of dislocation time sequence signals with the same frequency and phase difference duty ratio of 360 degrees; the 2 paths of dislocation time sequence signals are respectively sent to a high-voltage pulse modulator A and a high-voltage pulse modulator B, and a magnetron pulse power supply and a direct-current pulse power supply are controlled to alternately output a microwave heating signal and a direct-current pulse detection signal; the 2-in-1 output device couples the microwave heating signal and the direct current pulse detection signal into a path of microwave working signal.
Further, the characteristic parameter detection module comprises a voltage current probe, a temperature probe and a signal detector; the voltage current probe is used for detecting voltage current of a magnetron, the temperature probe is used for detecting temperature of the magnetron, and the signal detector is used for detecting microwave signals in a system.
Furthermore, the data acquisition and processing module comprises an acquisition device and a micro processor; the collector is used for collecting detection information and sending the detection information to the microprocessor; the microprocessor is used for determining the type of the heated object according to the detection information and then sending a corresponding control instruction to the magnetron pulse power supply to change the microwave heating signal, thereby changing the heating working state of the magnetron.
In terms of working principle, different articles have different microwave absorbing capacities, so that reflected microwave signals are different, and the reflected microwave signals influence the work of a magnetron to cause different voltage and current of the magnetron; and the temperature of the magnetron in different working states is different. The invention can determine which type of heating article of the microwave oven is by the detection information. The invention adopts a power source synthesized based on the duty ratio of a pulse magnetron to emit a detection signal when the magnetron is not in operation, then detects a working voltage current and a temperature of the magnetron through a characteristic parameter detection module, detects the detection signal and a reflection signal of an article to be heated, then collects detection information in a data acquisition processing module and determines the type of the article to be heated, then sends a corresponding control instruction to a synthesis power source and a control module, and changes the working state of the magnetron through changing a microwave heating signal to meet the heating requirement of the article.
The invention provides an AI magnetron system of a household microwave oven, when the microwave oven based on the system heats an object, the system only needs to directly start heating without setting time and the type of the heated object, so that the heated object can achieve the ideal effect, the operation of the microwave oven is simplified, the time is saved, the life is facilitated, the work of a magnetron can be more effective, and the system is energy-saving and environment-friendly.
Drawings
Fig. 1 is a schematic diagram of various structures of an AI magnetron system 1: a microwave oven cavity; 2: a magnetron; 3: a power source and a control module are synthesized; 4.1: a temperature patch probe; 4.2: a voltage current probe; 5: a data acquisition processing module; 6: a signal detector;
FIG. 2 is a block diagram of an AI magnetron system;
FIG. 3 is a schematic block diagram of the operation of a power source based on pulsed magnetron duty cycle synthesis;
FIG. 4 is a waveform diagram of a transmitted power signal when the load is water;
FIG. 5 is a waveform diagram of a reflected power signal when the load is water;
FIG. 6 is a waveform diagram of the transmitting power signal when the load is chicken;
fig. 7 is a waveform diagram of a reflected power signal when the load is chicken.
Detailed Description
In order to make the technical scheme of the invention clearer, the invention is further explained with reference to the attached drawings.
An AI magnetron system suitable for a household microwave oven comprises a magnetron, a synthetic power source and control module, a characteristic parameter detection module and a data acquisition and processing module.
The synthesis power source and control module is used for providing microwave working signals for the magnetron; the microwave working signal is generated by coupling a microwave heating signal and a direct current pulse detection signal which are alternated in a time-sharing manner; the microwave heating signal is used for exciting a magnetron to normally heat and work, and the direct current pulse detection signal is used for exciting the magnetron to generate a detection signal; the detection signal enters the cavity of the microwave oven and then reacts with the heated object to generate a reflection signal.
The synthetic power source and control module comprises a time sequence generator, a high-voltage pulse modulator A, a high-voltage pulse modulator B, a magnetron pulse power supply, a direct-current pulse power supply and a 2-in-1 output device; the time sequence generator provides 2 paths of dislocation time sequence signals with the same frequency and the phase difference duty ratio of 360 degrees; the 2 paths of dislocation time sequence signals are respectively sent to a high-voltage pulse modulator A and a high-voltage pulse modulator B, and a magnetron pulse power supply and a direct-current pulse power supply are controlled to alternately output a microwave heating signal and a direct-current pulse detection signal; and the 2-in-1 output device couples the microwave heating signal and the direct current pulse detection signal into a path of microwave working signal.
The characteristic parameter detection module comprises a voltage current probe, a temperature probe and a signal detector; the voltage and current probe is used for detecting voltage and current of a magnetron, the temperature probe is used for detecting temperature of the magnetron, the signal detector comprises a double-directional waveguide ring coupler and a coupler detector, the double-directional waveguide ring coupler is used for simultaneously detecting detection signals and reflection signals passing through the device, and the microwave signals are converted into electric signals through the coupler detector to facilitate subsequent collection and processing.
Detecting a microwave signal in a system, wherein the microwave signal comprises a detection signal and a reflection signal; and sending the detection information to a data acquisition processing module.
The data acquisition processing module comprises an acquisition device and a micro processor; the collector is used for collecting detection information and sending the detection information to the microprocessor; the microprocessor is used for determining the type of the heated object according to the detection information and then sending a corresponding control instruction to the magnetron pulse power supply to change the microwave heating signal, thereby changing the heating working state of the magnetron.
The working process of the embodiment is as follows:
a microwave oven based on the AI magnetron system is shown in fig. 1. And putting the articles to be heated into the microwave oven, and starting the microwave oven to work only by pressing a start key.
The synthesis power source and control module provides a magnetron with a microwave working signal generated by coupling of a microwave heating signal and a direct current pulse detection signal which are alternated in a time-sharing manner; the microwave heating signal is used for exciting the magnetron to normally heat and work, and the direct current pulse detection signal is used for exciting the magnetron to generate a detection signal.
The detection signal enters the cavity of the microwave oven and then reacts with the heated object to generate a reflection signal; the signal detector detects the reflected signal and the detection signal, the voltage current probe detects the voltage current of the magnetron, and the temperature probe detects the temperature of the magnetron.
The collector collects the detection information and sends the detection information to the microprocessor; the microprocessor determines the kind of the heated material according to the detection information. For example, the amplitudes of the reflected power signal waveforms of water and chicken are obviously different, the amplitude of the water is about 0.88, the amplitude of the chicken is about 0.54, and the measuring range is 1v (see fig. 4, 5, 6 and 7). Then a corresponding control command is sent to the magnetron pulse power supply to change the microwave heating signal, thereby changing the heating working state of the magnetron and enabling the object to be heated to achieve the ideal heating effect.

Claims (4)

1. An AI magnetron system suitable for a household microwave oven is characterized by comprising a magnetron, a synthetic power source and control module, a characteristic parameter detection module and a data acquisition and processing module;
the synthetic power source and control module is used for providing a microwave working signal for the magnetron; the microwave working signal is generated by coupling a microwave heating signal and a direct current pulse detection signal which are alternated in a time-sharing manner; the microwave heating signal is used for exciting a magnetron to normally heat and work, and the direct current pulse detection signal is used for exciting the magnetron to generate a detection signal; the detection signal enters the cavity of the microwave oven and then reacts with the heated object to generate a reflection signal;
the characteristic parameter detection module is used for detecting the voltage, the current and the temperature of a magnetron and detecting microwave signals in a system, wherein the microwave signals comprise detection signals and reflection signals; and sending the detection information to a data acquisition processing module;
the data acquisition processing module is used for acquiring and processing the received detection information to obtain a detection result, and then sending a corresponding control instruction to the synthetic power source and the control module according to the detection result; the synthetic power source and the control module change the microwave heating signal according to the control instruction, so that the heating working state of the magnetron is changed.
2. The AI magnetron system as claimed in claim 1, wherein the synthesized power source and control module comprises a timing generator, a high voltage pulse modulator a, a high voltage pulse modulator B, a magnetron pulse power source, a dc pulse power source, and a 2-in-1 output device; the time sequence generator provides 2 paths of dislocation time sequence signals with the same frequency and phase difference duty ratio of 360 degrees; the 2 paths of dislocation time sequence signals are respectively sent to a high-voltage pulse modulator A and a high-voltage pulse modulator B, and a magnetron pulse power supply and a direct-current pulse power supply are controlled to alternately output a microwave heating signal and a direct-current pulse detection signal; the 2-in-1 output device couples the microwave heating signal and the direct current pulse detection signal into a path of microwave working signal.
3. The AI magnetron system for a domestic microwave oven according to claim 1 or 2, wherein the characteristic parameter detection module comprises a voltage current probe, a temperature probe, a signal detector; the voltage and current probe is used for detecting the voltage and current of the magnetron, the temperature probe is used for detecting the temperature of the magnetron, and the signal detector is used for detecting microwave signals in the system.
4. The AI magnetron system for household microwave ovens of claim 1 or 2, wherein said data acquisition processing module comprises a collector and a microprocessor; the collector is used for collecting detection information and sending the detection information to the microprocessor; the microprocessor is used for determining the type of the heated object according to the detection information and then sending a corresponding control instruction to the magnetron pulse power supply to change the microwave heating signal, thereby changing the heating working state of the magnetron.
CN202210276320.4A 2022-03-21 2022-03-21 AI magnetron system suitable for domestic microwave oven Active CN114698175B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210276320.4A CN114698175B (en) 2022-03-21 2022-03-21 AI magnetron system suitable for domestic microwave oven

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210276320.4A CN114698175B (en) 2022-03-21 2022-03-21 AI magnetron system suitable for domestic microwave oven

Publications (2)

Publication Number Publication Date
CN114698175A CN114698175A (en) 2022-07-01
CN114698175B true CN114698175B (en) 2023-01-06

Family

ID=82138768

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210276320.4A Active CN114698175B (en) 2022-03-21 2022-03-21 AI magnetron system suitable for domestic microwave oven

Country Status (1)

Country Link
CN (1) CN114698175B (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111436481A (en) * 2020-05-09 2020-07-24 上海点为智能科技有限责任公司 Radio frequency pulse thawing and heating equipment and closed-loop control method thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2326141B1 (en) * 2009-11-18 2012-12-26 Whirlpool Corporation Microwave oven and related method including a magnetron for heating and a SSMG for heated objects sensing

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111436481A (en) * 2020-05-09 2020-07-24 上海点为智能科技有限责任公司 Radio frequency pulse thawing and heating equipment and closed-loop control method thereof

Also Published As

Publication number Publication date
CN114698175A (en) 2022-07-01

Similar Documents

Publication Publication Date Title
KR101727904B1 (en) A cooking apparatus using microwave and method for operating the same
US10727675B2 (en) Smart table and method for operating the same
WO1999041950A2 (en) A control system for use with induction heating cooktops
CN107272479B (en) Ultrasonic wave-based touch sensing device, and cooking apparatus and home appliance including the same
CN209472783U (en) Microwave power source
CN102510595A (en) Control method of semiconductor microwave oven
CN114698175B (en) AI magnetron system suitable for domestic microwave oven
CN106037269B (en) Intelligent heat preserving table arrangement and its working method based on magnetic resonance wireless energy transfer
CN207612434U (en) Heating device and cooking apparatus
CN101192335A (en) Wireless emission accurate temperature measurement circuit for pot
CN109931631B (en) Heating device, cooking utensil and heating control method
CN207283855U (en) Electromagnetic heating control device and electromagnetic heating appliance
CN110086372A (en) A kind of microwave power source of plated film
CN210540984U (en) Cooking utensil that machining efficiency is high
CN205754921U (en) There is the electromagnetic heater of radio transmission-receiving function
CN206975133U (en) Electromagnetic oven can present formula electronic load
CN208658968U (en) Heating device and cooking apparatus
KR20030079546A (en) Microwave oven operating circuit
CN218277197U (en) Magnetic wave furnace hybrid heating circuit and magnetic wave furnace
JP2000184963A (en) Heating cooker
CN219351364U (en) Wireless power supply and heating multiplexing device and electrical equipment
CN220139755U (en) Electromagnetic oven and control circuit thereof
CN202747425U (en) Heating system of microwave oven
CN102679418A (en) Household variable-frequency microwave oven
CN111988876B (en) Electromagnetic heating circuit, electromagnetic heating device, drive control method, and heating control method

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right

Effective date of registration: 20221205

Address after: 611731, No. 2006, West Avenue, Chengdu hi tech Zone (West District, Sichuan)

Applicant after: University of Electronic Science and Technology of China

Applicant after: GUANGDONG WITOL VACUUM ELECTRONIC MANUFACTURE Co.,Ltd.

Address before: 611731, No. 2006, West Avenue, Chengdu hi tech Zone (West District, Sichuan)

Applicant before: University of Electronic Science and Technology of China

TA01 Transfer of patent application right
GR01 Patent grant
GR01 Patent grant