CN102080835A - Intelligent integral electromagnetic oven - Google Patents
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- CN102080835A CN102080835A CN2011100448226A CN201110044822A CN102080835A CN 102080835 A CN102080835 A CN 102080835A CN 2011100448226 A CN2011100448226 A CN 2011100448226A CN 201110044822 A CN201110044822 A CN 201110044822A CN 102080835 A CN102080835 A CN 102080835A
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Abstract
The invention relates to an intelligent integral electromagnetic oven. The intelligent integral electromagnetic oven comprises an oven body, and a main control circuit, a peripheral power supply circuit of the main control circuit, a heating circuit, an insulated gate bipolar translator (IGBT) drive circuit, a surge protection circuit and a synchronizing circuit which are arranged in the oven body, wherein a programmable voice processing circuit, an automatic water adding circuit and an electronic weighing circuit are arranged in the oven body and are connected in series sequentially; and the signal output end of the electronic weighing circuit is connected with the signal input end of the main control circuit. In the intelligent integral electromagnetic oven, a voice control function, an automatic water adding function and an electronic weighing function are added, different dishes can be cooked by voice control, multilingual formats can be recorded, the whole cooking process is automatically completed by the electromagnetic oven, and artificial operating troubles are eliminated; and the intelligent integral electromagnetic oven has the advantages of complete functions and is easy to operate.
Description
Technical field:
The present invention relates to a kind of electromagnetic oven, particularly relate to a kind of intelligent integrated electromagnetic oven.Can finish the cooking of multiple different dish by voice control, whole gastronomical process all is to be finished automatically by electromagnetic oven, has saved manually-operated worry.Belong to household electrical appliance technical field.
Background technology:
Electromagnetic oven has another name called electromagnetic stove, is the product of modern kitchen revolution, and it need not naked light or conduction-type heats and allow heat directly produce in the bottom of a pan, so the thermal efficiency is greatly improved.Be a kind of energy-efficient kitchen utensils, be different from all fire being arranged or do not have fire conduction heating kitchen tools of tradition fully.Electromagnetic oven is the electric cooking apparatus that utilizes electromagnetic inductive heating principle to make.Partly form by high-frequency induction heating coil (being magnet exciting coil), RF power conversion equipment, controller and ferromagnetic material the bottom of a pan cooker etc.During use, feed alternating current in the heater coil, just produce an alternating magnetic field around the coil, the magnetic line of force of alternating magnetic field is most of by the metal pan body, produces a large amount of eddy current in the bottom of a pan, thereby produces the required heat of culinary art.In heating process, there is not naked light, so safety, health.Along with development of technology, the function of electromagnetic oven is also increasing gradually; Example: sound prompt function, develop into the control scheme that touches fully, rely on the acoustical vibration source to reach automatic protection functions or the like from non-touch scheme.
As China Patent No. for the utility model patent of " 200820021549.9 " discloses a kind of voice control electromagnetic oven, comprise body of heater, control device, described control device comprises power conversion and filtration module, electromagnetic oven main control microprocessor module, detects control module, it is characterized in that: control device also comprises voice signal pickup model, voice signal identification and processing module.Described voice signal pickup model comprises microphone, signal filter circuit, the signal amplification circuit that receives voice signal.After the user uses voice to assign control command, pick up voice signal by the voice signal pickup model, the voice command that prestores through voice signal identification and processing module and inside relatively after, transmit predefined electromagnetic oven director data and give the electromagnetic oven main control chip, control electromagnetic oven duty promptly just can realize the input of switching on and shutting down, each command function to electromagnetic oven with simple voice command, the increase of firepower/reduce operation such as grade, do not need manual operation, more safe ready.China Patent No. discloses a kind of electromagnetic oven for the utility model patent of " 201020164494.4 ", comprise body of heater, heating spool rest, oscillating circuit, microprocessor, detection control module, display and input keyboard, also comprise data storage and sound circuit; Data storage is connected with microprocessor respectively with sound circuit.The utility model can send corresponding voice operating prompting according to each stage of the cooking dish of menu, and making cooks becomes more simple.Above-mentioned electromagnetic oven all needs manually-operated just can finish the cooking of dish, has troublesome poeration, function singleness, does not have and add the power and water shortcoming of function such as weigh automatically.
Summary of the invention:
Purpose of the present invention is to have the more single shortcoming of function ratio in order to solve electromagnetic oven of the prior art, and a kind of intelligent integrated electromagnetic oven that voice are controlled, added the sub-function of weighing of power and water automatically that has is provided.
Purpose of the present invention can reach by taking following technical scheme:
Intelligent integrated electromagnetic oven comprises body of heater, and is arranged on main control circuit, power circuit, heater circuit, IGBT drive circuit, surge protection circuit and synchronous circuit in the body of heater, and its design feature is:
1) in body of heater, be provided with speech processing circuit able to programme, add water circuit and electronic-weighing circuit automatically; Speech processing circuit able to programme, add water circuit automatically and the electronic-weighing circuit is connected in series successively, the signal output part of electronic-weighing circuit is connected with the signal input part of main control circuit;
2) main control circuit is formed by connecting by host scm MCU1 able to programme and peripheral circuit; Speech processing circuit able to programme is formed by connecting by voice single-chip microprocessor MCU 2 and peripheral circuit, and described voice single-chip microprocessor MCU 2 is built-in with amplifier of microphone, A/D converter, speech processor and I/O controller; Automatically adding water circuit is formed by connecting by relay R EL1, water level switch CN3, triode Q12, diode D25, resistance R 51, resistance R 52; The electronic-weighing circuit is formed by connecting by programmable single chip computer MCU3 and peripheral power circuit, pressure sensor, display circuit, keyboard circuit.
In the practical application, elder generation is good the register holds that used speech sentences is entered into voice single-chip microprocessor MCU 2 inside, acquiescence national language identification after electromagnetic oven powers on, ready food is put into the pot the inside, then the title of food is said, after voice single-chip microprocessor MCU 2 identification through analyzing automatically after the system handles, select a kind of suitable internal processes menu, enter then and add water function automatically, automatically adding water is to be controlled by host scm MCU1 able to programme, the pressure sensor of the electronic scale of process host scm MCU1 peripheral circuit able to programme transfers induction weight to electric energy, the judgement that re-uses the AD value is input to then exports a triggering signal again and is given to host scm MCU1 able to programme and finishes and add water after programmable single chip computer MCU3 handles, the overall process that adds water all is to handle automatically by single-chip microprocessor MCU 3, finish and add behind the water and a kind of suitable timing menu of automatic selection, until boiling food, whole process all is to be assisted mutually by each single-chip microcomputer to finish.
Purpose of the present invention can also reach by taking following technical scheme:
A kind of embodiment of the present invention is: the model of the host scm MCU1 able to programme of described main control circuit is JYM01020ED, the peripheral circuit of main control circuit is by diode D9, electrochemical capacitor EC8, EC16, capacitor C 32, C34, C35, AT17, resistance R 13, R33, R34, R35, R36, R37, VR1 are formed by connecting.
A kind of embodiment of the present invention is: the model of the voice single-chip microprocessor MCU 2 of described speech processing circuit able to programme is AP7003, the peripheral circuit of speech processing circuit able to programme is by capacitor C 23, C24, C25, C26, C27, resistance R 80, R81, R82, R83, R84, LED 1, LED2, buzzer MIC is formed by connecting.
A kind of embodiment of the present invention is: the model of the programmable single chip computer MCU3 of described electronic-weighing circuit is SH79FO85, the peripheral circuit of electronic-weighing circuit is by pressure sensor L5, triode Q13, electrochemical capacitor C37, C38, C38, capacitor C 12, C43, C44, C45, C46, resistance R 18, R19, R20, R21, R22, R49, R50, buzzer BEEP1 is formed by connecting.
A kind of embodiment of the present invention is: described power circuit is by chip IC 1, IC4, transformer T1, diode D3, D4, D5, D10, D11, D12, D24, Zener diode Z1, electrochemical capacitor EC2, EC4, EC5, EC6, EC7, C22, capacitor C 3, C4, C5, C8, C20, resistance R 38, R39, R40, R47, R48, fuse FUSE1 is formed by connecting.
A kind of embodiment of the present invention is: described heater circuit is by insulated gate bipolar transistor IGBT 1, rectifier bridge DB1, and inductance L 2, capacitor C 20, C21, resistance R 24 is formed by connecting.
A kind of embodiment of the present invention is: described IGBT drive circuit is by triode Q1, Q3, Q11, diode D6, D26, and electrochemical capacitor EC3, capacitor C 2, resistance R 4, R6, R7, R8, R25, R26, R30 are formed by connecting.
A kind of embodiment of the present invention is: described surge protection circuit is by triode Q2, capacitor C 7, and resistance R 27, R28, R29, R32 are formed by connecting.
A kind of embodiment of the present invention is: described synchronous circuit is by capacitor C 9, C11, C14, and resistance R 1, R2, R3, R5, R9, R10, R11, R12 are formed by connecting.
Beneficial effect of the present invention:
Compared with prior art, because the present invention is provided with voice control function, adds water function and electronic-weighing function automatically, can finish the distribution and the cooking program of multiple different dish by voice control, can the multi-lingual form of typing, on the one hand whole gastronomical process is finished automatically by electromagnetic oven, save manually-operated worry, had simple to operate and multiple functional advantage; Use the countries and regions that go for different languages on the other hand, has advantage of wide range of application.
Description of drawings:
Fig. 1 is the circuit function block diagram of the specific embodiment of the invention.
Fig. 2 is the circuit theory diagrams of the speech processing circuit able to programme of the specific embodiment of the invention.
Fig. 3 is the functional block diagram of the chip AP7003 of the specific embodiment of the invention.
Fig. 4 is the circuit theory diagrams that add water circuit automatically of the specific embodiment of the invention.
Fig. 5 is the circuit theory diagrams of the electronic-weighing circuit of the specific embodiment of the invention.
Fig. 6 is the main control circuit of the specific embodiment of the invention and the circuit theory diagrams of peripheral circuit thereof.
The specific embodiment:
Specific embodiment:
With reference to Fig. 1 and Fig. 6, the described intelligent integrated electromagnetic oven of present embodiment, comprise body of heater, and be arranged on speech processing circuit able to programme 1 in the body of heater, add water circuit 2 and electronic-weighing circuit 3 main control circuits 4, power circuit 5, heater circuit 6, IGBT drive circuit 7, surge protection circuit 8 and synchronous circuit 9 automatically; Speech processing circuit 1 able to programme, add water circuit 2 and electronic-weighing circuit 3 automatically and be connected in series successively, the signal output part of electronic-weighing circuit 3 is connected with the signal input part of main control circuit 4; Main control circuit 4 is formed by connecting by host scm MCU1 able to programme and peripheral circuit; Speech processing circuit 1 able to programme is formed by connecting by voice single-chip microprocessor MCU 2 and peripheral circuit, and described voice single-chip microprocessor MCU 2 is built-in with amplifier of microphone, A/D converter, speech processor and I/O controller; Automatically adding water circuit 2 is formed by connecting by relay R EL1, water level switch CN3, triode Q12, diode D25, resistance R 51, resistance R 52; Electronic-weighing circuit 3 is formed by connecting by programmable single chip computer MCU3 and peripheral power circuit, pressure sensor, display circuit, keyboard circuit.
In the present embodiment:
With reference to Fig. 2, described speech processing circuit able to programme is formed by connecting by voice single-chip microprocessor MCU 2 and peripheral circuit, the model of the voice single-chip microprocessor MCU 2 of speech processing circuit able to programme is AP7003, the peripheral circuit of speech processing circuit able to programme is by capacitor C 23, C24, C25, C26, C27, resistance R 80, R81, R82, R83, R84, LED 1, LED2, buzzer MIC is formed by connecting.
Voice single-chip microprocessor MCU 2 (AP7003) is a novel, low-cost speech recognition special chip, can discern 12 groups of different words after preliminary treatment, every group of duration 1.5 seconds, but conjunction or word identification.Its I/O mouth has 2 common inputs, 4 triggering inputs, 12 triggering outputs, 2 LED to drive.Adopt the operating voltage of 2.4～2.5V, possess low-power consumption mode, instruction is optimized, and is user-friendly to.
Voice single-chip microprocessor MCU 2 (AP7003) comprises AP7003-1 (by the CPU Serial Control) and two kinds of models of AP7003-2 (directly being controlled by button).It has the programmability of height, and is easy to use, can be widely used in fields such as voice-operated household electrical appliances, toy, automatic answering machine.The speech recognition circuit that constitutes with AP7003-2 wherein, simple in structure, peripheral component is few, design, make, debugging and operation be very easy.Therefore selecting AP7003-2 for use is the core of home appliance voice controller.
With reference to Fig. 3, voice single-chip microprocessor MCU 2 (AP7003) is built-in with amplifier of microphone, A/D converter, speech processor and I/O controller.
With reference to table one, voice single-chip microprocessor MCU 2 (AP7003) has two kinds of button patterns, and PIM1 connects high level, is 12 key patterns; PIM1 connects high level and connects low level, is 8 key patterns.Here adopt 12 key control patterns, its typical application circuit as shown in Figure 2.POSL connects low level, and it is effective that POA1～POA12 is output as low level; POSL connects high level, and it is effective that POA1～POA12 is output as high level.
Table one AP7003-2 pin function table
| Pin name | Functional description |
| GNDD | Digitally |
| LED1 | Low level LED1 drive end |
| LED2 | Low level LED2 drive end |
| POB1～POB4 | Output port B |
| PIT1～PIT4 | Low level triggers input, the band pull-up resistor |
| VDDD | Positive supply |
| CAPV | With must be connected an electric capacity between the ground to adjust builtin voltage |
| OSC1 | The oscillator frequency control end |
| PIM1～2 | The pattern control input end |
| TEST | Test lead |
| POSL | The output mode selector of output port A |
| GNDA | Simulation ground |
| TREF | The Critical Control end of phonetic entry |
| A2OUT | Second amplifier out |
| A1IN | The negative input of first amplifier |
| A1OUT | The output of first amplifier |
| MICP | The cathode power supply of microphone |
| VDDA | The analog electrical pressure side |
| POA1～POA122 | Output port A1～A12 |
| PORES | The high level input |
With reference to Fig. 4, the described water circuit 2 that adds automatically is formed by connecting by relay R EL1, water level switch CN3, triode Q12, diode D25, resistance R 51, resistance R 52;
With reference to Fig. 5, described electronic-weighing circuit 3 is formed by connecting by programmable single chip computer MCU3 and peripheral power circuit, pressure sensor, display circuit, keyboard circuit.The model of the programmable single chip computer MCU3 of electronic-weighing circuit 3 is SH79FO85, the programmable gain amplifier (PGA) of built-in 20 ∑s of the SH79F085 of middle clever electronic development-Δ analog-digital converter (ADC) and 1～200 times.Because the built-in aboundresources of SH79F085 can be saved peripheral circuit, makes things convenient for system debug again, and can also effectively improve the EMI performance of system.Hardware circuit mainly comprises: SH79F085 single-chip microcomputer, power circuit, pressure sensor, display circuit, keyboard circuit.SH79F085 single-chip microcomputer operating voltage is 3.0V～5.5V, and built-in LDO source of stable pressure output 2.7V voltage (VDDR) is powered to sensor.AIN2 difference port is the load cell signal input, and AIN0 difference port is the battery voltage detection input.In addition, the built-in VREF reference power supply of SH79F085, output area able to programme is: 0.1V～0.8V, can regulate output area by register according to the actual requirements, be used for doing signal by P0.4-P0.8 and output to JYM01020ED and control heating.The peripheral circuit of electronic-weighing circuit 3 is by pressure sensor L5, triode Q13, electrochemical capacitor C37, C38, C38, capacitor C 12, C43, C44, C45, C46, and resistance R 18, R19, R20, R21, R22, R49, R50, buzzer BEEP1 is formed by connecting.
With reference to Fig. 6, described intelligent integrated electromagnetic oven also comprises buzzer circuit 10, IGRT face sensor circuit 11, boiler face sensor circuit and by triode Q5, diode D7, the circuit that resistance R 42 and socket CN1 constitute etc.
Described main control circuit 4 is formed by connecting by host scm MCU1 able to programme and peripheral circuit; The model of host scm MCU1 able to programme is JYM01020ED, and the peripheral circuit of main control circuit is by diode D9, electrochemical capacitor EC8, EC16, and capacitor C 32, C34, C35, AT17, resistance R 13, R33, R34, R35, R36, R37, VR1 are formed by connecting.
Described power circuit 5 is by chip IC 1, IC4, transformer T1, diode D3, D4, D5, D10, D11, D12, D24, Zener diode Z1, electrochemical capacitor EC2, EC4, EC5, EC6, EC7, C22, capacitor C 3, C4, C5, C8, C20, resistance R 38, R39, R40, R47, R48, fuse FUSE1 is formed by connecting.
Described heater circuit 6 is by insulated gate bipolar transistor IGBT 1, rectifier bridge DB1, and inductance L 2, capacitor C 20, C21, resistance R 24 is formed by connecting.
Described IGBT drive circuit 7 is by triode Q1, Q3, Q11, diode D6, D26, and electrochemical capacitor EC3, capacitor C 2, resistance R 4, R6, R7, R8, R25, R26, R30 are formed by connecting.
Described surge protection circuit 8 is by triode Q2, capacitor C 7, and resistance R 27, R28, R29, R32 are formed by connecting.
Described synchronous circuit 9 is by capacitor C 9, C11, C14, and resistance R 1, R2, R3, R5, R9, R10, R11, R12 are formed by connecting.
Described buzzer circuit 10 is formed by connecting by buzzer B1, capacitor C 10, resistance R 41, R43.
Described IGRT face sensor circuit 11 is formed by connecting by resistance R T1, R15, R17 and capacitor C 13.
Described boiler face sensor circuit 12 is by resistance R 14, R16, and capacitor C 33 and socket CN2 are formed by connecting.
The course of work of present embodiment is as follows:
Elder generation is good the register holds that used speech sentences is entered into programmable voice Chip Microcomputer A P7003 inside, acquiescence national language identification after electromagnetic oven powers on, ready food is put into the pot the inside, then the title of food is said, after the voice Chip Microcomputer A P7003 identification through analyzing automatically after the system handles, select a kind of suitable internal processes menu, enter then and add water function automatically, automatically adding water is to be controlled by programmable special-purpose single-chip microcomputer JYM01020ED, the pressure sensor of the electronic scale of the programmable single-chip microcomputer SH79FO85 peripheral circuit of process transfers induction weight to electric energy, the judgement that re-uses the AD value is input to then exports a triggering signal again and is given to single-chip microcomputer JYM01020ED and finishes and add water after programmable single chip computer SH79FO85 handles, the overall process that adds water all is to handle automatically by programmable single chip computer SH79FO85, finish and add behind the water and a kind of suitable timing menu of automatic selection, until boiling food, whole process all is to be assisted mutually by each single-chip microcomputer to finish.
The above; only be the preferable specific embodiment of the present invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the scope that the present invention discloses; be equal to replacement or change according to technical scheme of the present invention and inventive concept thereof, all belonged to protection scope of the present invention.
Claims (9)
1. intelligent integrated electromagnetic oven comprises body of heater, and is arranged on main control circuit (4), power circuit (5), heater circuit (6), IGBT drive circuit (7), surge protection circuit (8) and synchronous circuit (9) in the body of heater, it is characterized in that:
1) in body of heater, be provided with speech processing circuit able to programme (1), add water circuit (2) and electronic-weighing circuit (3) automatically; Speech processing circuit able to programme (1), add water circuit (2) automatically and electronic-weighing circuit (3) is connected in series successively, the signal output part of electronic-weighing circuit (3) is connected with the signal input part of main control circuit (4);
2) main control circuit (4) is formed by connecting by host scm MCU1 able to programme and peripheral circuit; Speech processing circuit able to programme (1) is formed by connecting by voice single-chip microprocessor MCU 2 and peripheral circuit, and described voice single-chip microprocessor MCU 2 is built-in with amplifier of microphone, A/D converter, speech processor and I/O controller; Automatically adding water circuit (2) is formed by connecting by relay R EL1, water level switch CN3, triode Q12, diode D25, resistance R 51, resistance R 52; Electronic-weighing circuit (3) is formed by connecting by programmable single chip computer MCU3 and peripheral power circuit, pressure sensor, display circuit, keyboard circuit.
2. intelligent integrated electromagnetic oven according to claim 1, it is characterized in that: the model of the host scm MCU1 able to programme of described main control circuit (4) is JYM01020ED, the peripheral circuit of main control circuit is by diode D9, electrochemical capacitor EC8, EC16, capacitor C 32, C34, C35, AT17, resistance R 13, R33, R34, R35, R36, R37, VR1 are formed by connecting.
3. intelligent integrated electromagnetic oven according to claim 1, it is characterized in that: the model of the voice single-chip microprocessor MCU 2 of described speech processing circuit able to programme (1) is AP7003, the peripheral circuit of speech processing circuit able to programme is by capacitor C 23, C24, C25, C26, C27, resistance R 80, R81, R82, R83, R84, LED 1, LED2, buzzer MIC is formed by connecting.
4. intelligent integrated electromagnetic oven according to claim 1, it is characterized in that: the model of the programmable single chip computer MCU3 of described electronic-weighing circuit (3) is SH79FO85, the peripheral circuit of electronic-weighing circuit is by pressure sensor L5, triode Q13, electrochemical capacitor C37, C38, C38, capacitor C 12, C43, C44, C45, C46, resistance R 18, R19, R20, R21, R22, R49, R50, buzzer BEEP1 is formed by connecting.
5. intelligent integrated electromagnetic oven according to claim 1, it is characterized in that: described power circuit (5) is by chip IC 1, IC4, transformer T1, diode D3, D4, D5, D10, D11, D12, D24, Zener diode Z1, electrochemical capacitor EC2, EC4, EC5, EC6, EC7, C22, capacitor C 3, C4, C5, C8, C20, resistance R 38, R39, R40, R47, R48, fuse FUSE1 is formed by connecting.
6. intelligent integrated electromagnetic oven according to claim 1 is characterized in that: described heater circuit (6) is by insulated gate bipolar transistor IGBT 1, rectifier bridge DB1, and inductance L 2, capacitor C 20, C21, resistance R 24 is formed by connecting.
7. intelligent integrated electromagnetic oven according to claim 1, it is characterized in that: described IGBT drive circuit (7) is by triode Q1, Q3, Q11, diode D6, D26, electrochemical capacitor EC3, capacitor C 2, resistance R 4, R6, R7, R8, R25, R26, R30 are formed by connecting.
8. intelligent integrated electromagnetic oven according to claim 1 is characterized in that: described surge protection circuit (8) is by triode Q2, capacitor C 7, and resistance R 27, R28, R29, R32 are formed by connecting.
9. intelligent integrated electromagnetic oven according to claim 1 is characterized in that: synchronous circuit (9) is by capacitor C 9, C11, C14, and resistance R 1, R2, R3, R5, R9, R10, R11, R12 are formed by connecting.
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| CN201110044822.6A CN102080835B (en) | 2011-02-23 | 2011-02-23 | Intelligent integral electromagnetic oven |
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Cited By (5)
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| CN104510329A (en) * | 2015-01-16 | 2015-04-15 | 孙昊 | Recipe generation system of cooking utensil and cooking utensil |
| CN106402959A (en) * | 2016-12-02 | 2017-02-15 | 合肥龙多电子科技有限公司 | Intelligent induction cooker control panel |
| CN106950874A (en) * | 2017-02-23 | 2017-07-14 | 北京联合大学 | A kind of electric cooking training system of use voice guide |
| CN107068151A (en) * | 2017-05-24 | 2017-08-18 | 佛山科学技术学院 | A kind of speech recognition and phonetic controller |
| CN108361767A (en) * | 2018-02-27 | 2018-08-03 | 青岛芯源通电子有限公司 | A kind of four-head touch crystallite stove for saving electric energy |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104510329A (en) * | 2015-01-16 | 2015-04-15 | 孙昊 | Recipe generation system of cooking utensil and cooking utensil |
| CN104510329B (en) * | 2015-01-16 | 2017-01-25 | 孙昊 | Recipe generation system of cooking utensil and cooking utensil |
| CN106402959A (en) * | 2016-12-02 | 2017-02-15 | 合肥龙多电子科技有限公司 | Intelligent induction cooker control panel |
| CN106950874A (en) * | 2017-02-23 | 2017-07-14 | 北京联合大学 | A kind of electric cooking training system of use voice guide |
| CN107068151A (en) * | 2017-05-24 | 2017-08-18 | 佛山科学技术学院 | A kind of speech recognition and phonetic controller |
| CN108361767A (en) * | 2018-02-27 | 2018-08-03 | 青岛芯源通电子有限公司 | A kind of four-head touch crystallite stove for saving electric energy |
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| CN102080835B (en) | 2015-08-05 |
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