WO2004027320A1 - Intelligent range for gaseous fuel - Google Patents

Abstract

The invention discloses an intelligent range for gaseous fuel on which a pan-rack is installed. A control panel is mounted on the front of the panel of the range. There are a control keyboard, a display, and a telecontrol signal receiving inductor on the surface of the control panel. A temperature inductor and a leak detector mount on the panel of the range. A computer control system is installed inside the control panel. The circuit of the intelligent range comprises a keyboard circuit section, a temperature detecting section, a sound section, a leak detecting section, a low pressure ignition detecting section, an infrared telecontrol signal receiving inductor, an output control section, a display section, a pan detecting section, an extension-pending infrared ray emission section, a serial interface section, an electrical source section.

Description

 Intelligent gas stove

 The invention relates to a gas stove used in people's daily life, in particular to a smart gas stove controlled by a computer. Background technique

 At present, the gas stoves used by people, such as gas and liquefied gas, are mainly realized by manually operating switches such as ignition, regulation of fire, and shutdown of the gas source. Obviously, the manually operated cooker must be under the supervision of the person in the whole process of work, otherwise it will cause problems such as burnout, charring or broth overflowing and causing the burning fire to extinguish. In order to overcome the problems and difficulties of manual operation, the Chinese patent: CN2 2 8 6 8 3 8N, CN 2 04775 9N and the CN 1 2 6 3 2 3 OA patents cooperating with others have proposed gas stoves: automatic Fire system, automatic re-ignition of flameout, air leak alarm, automatic air shut-off, over-temperature alarm, timed cooking and corresponding supporting control device according to the different pots used. Many of the features of these inventions are implemented through the control of a microcomputer. With the further development of science and technology, many designs or technologies are lagging behind in terms of intelligence, especially the lack of related remote control devices. Therefore, further improvements are necessary for the prior art. SUMMARY OF THE INVENTION

 In order to overcome the deficiencies of the existing computer gas stove, the object of the present invention is to provide a smart gas stove which can control various functions of the gas stove through the remote control device.

 The technical solution adopted by the invention to solve the technical problem is as follows: There is a gas stove, the gas stove is provided with a pot rack, the pot rack is provided with an ignition device at the front end of the gas stove; the front panel of the gas stove is provided with a control panel, a control panel The surface is controlled by the keyboard, the display and the remote control receiving sensor, the inside of the control panel; the computer control system is installed; the temperature sensor head and the air leakage sensor are also arranged on the panel of the gas stove; the principle circuit of the intelligent gas stove is based on the single chip microcomputer The core controller is externally connected to the 1st part; the circuit board part, the temperature measuring part, the voice part, the air leak detection, the ignition low voltage detection, the infrared remote control receiving, the output control part, the display part, the no-pot detection part, the infrared emission part to be extended , serial interface part, functional unit of the power supply part.

The keyboard circuit portion: by the microcontroller ICI, the buttons s ₂ , s ₃ , s ₄ , s ₅ , s ₆ , s ₇ , S ₈ , S ₉ , S _{1 ()} , Su, S ₁₂ , S ₁₃ , S ₁₄ , S ₁₅ , S ₁₆ , resistors R ₁₅ , R ₁₆ , R ₁₇ , R ₁₈ to make;

1. Of ₁₂₂ feet and the key _{S 4, S 3, S 2} , an end of Si is connected, is connected to another end of the resistor R S ₄ keys _18, and the other end connected to R ₁₈ and the IC 2 6 feet, S ₃ key The other end is connected to the resistor ₇ , the other end of the R ₁₇ is connected to the 27 pin of ₁ , the other end of the S ₂ button is connected to one end of the resistor R ₁₆ , and the other end of the R ₁₈ is connected to 1. ₁ of the 2 8 feet are connected, the other end of the Si button is connected to one end of the resistor R ₁₅ , and the other end of the R ₁₅ is working? 9 feet connected;

The 2 3 pin of 1^ is connected to one end of the buttons S ₈ , S ₇ , S ₆ , S ₅ , the other end of the S ₈ button is connected to one end of the resistor R ₁₈ , and the other end of R ₁₈ is 1. 26 is connected to pin _1, S ₇ is connected to one end of the other keys of the resistor R _17, R ₁₇ and the other end of 1. 27 pin ₁ is connected, is connected to another end of the resistor R S ₆ keys _16, connected to the other end of R ₁₈ and 1 ^ of 28 feet, is connected to one end of the S ₅ keys and the other end of the resistor R ₁₅ is, R The other end of ₁₅ is with 1. ₁ 2 9 feet connected;

1. ₁ and the key pin 24 _{S 12, Su, S 1 D} , one end is connected to the S _9, is connected to another end of the resistor R S ₁₂ of the key _18, R ₁₈ and the other end of 1. ₁ is connected to pin 26, is connected to one end of the other keys of the resistor R _17, R ₁₇ and the other end of 1. ₁ of 2 7 feet connected, Si. Another end of the resistor R is connected to the keys _16, R ₁₈ and the other end of 1. ₁ is connected to pin 28, is connected to another end of the resistor R and the switch _15, R ₁₅ and the other end: the ^^? 9 feet connected;

1 ^ of 25 feet and switches S _16, S _{15, 14,} one end of the S S ₁₃ is connected, is connected to one end of the S ₁₆ switch and the other end of the resistor R _18, the other end of R ₁₈ is connected to the 26 pin _1, the other end of the switch S ₁₅ and the end of the resistor R ₁₇ is connected to the other end ₇ is connected to the 27 pin ^, ₄ and the other end connected to one end of the switch Si resistor R _16, and R ₁₈ and the other end: a ^^ ? 8 feet are connected, the other end of the switch is connected to one end of the resistor R ₁₅ , and the other end of the R ₁₅ is working? 9 feet connected;

The button S ₁ is a setting button, which can set the time, temperature, and selection control button; the button S ₂ is a time button, which can be used as a time display mode conversion and a clock and minute setting selection; the button S ₃ is a temperature button. It can be used as the conversion of the temperature display mode and the setting of the boiling temperature; the button S ₄ is the selection button, which can be used as the selection of the work type; the button S ₅ is the programming button, which can be used in conjunction with the setting of the timing operation. The keys have 3 ₆ start keys, S ₇ end keys, S ₈ (S ₁₂ ) confirmation keys, and Si. Add button, Si i decrease button; button S _g is start button, can be used to start timing and manual cooking function; button S ₁₃ is power button, can be used as line power on and off; buttons S ₁₄ , S ₁₅ are size The fire key can control the size of the gas of the other cooktop; the button Si ₆ is the fire key to control the shut-off of the gas of the other cooktop.

The temperature measurement part: by the microcontroller Id, the operational amplifier IC ₅ , the IC ₆ thermistor RF ₂ , the positioner F RP ₃ , resistors R _{3 D} , R ₃₁ , R ₃₂ , electrolytic capacitor C ₉ , capacitor C ₇ , . ₈ composition;

Thermistors RF ₂ - a power supply terminal connected to ground and the other terminal of R _31, pin 3 of op amp IC ₅ is connected to the other end 6 R ₃₁ volt power supply is connected to ground; the second IC pin _5, respectively, and the IC The first leg of ₅ , the resistor R ₃ . Connected, R 3. The other end of the IC 6 is connected to the second leg of the IC 6; the third leg of the IC 6 is connected to the first leg and the third leg of the locator RF ³ , and the second leg of the RF ₃ is respectively connected to the third leg of the RF ₃ ; ₆ IC pin 1, pin 33 is connected to the first, the first pin is connected to the RF power source is connected to ground, the second 1 ^ ₁ ^ 1 is connected to pin _32, R ₃₂ and the other end is connected to the 6 volt power supply;

The thermistor RF ₂ and the resistor R ₃₁ form a voltage dividing circuit, and the resistance value of the RF ₂ changes with temperature, and the op amp IC ₅ performs voltage following R ₃ . Into the op amp IC 6 for signal amplification and zero point adjustment evacuation microcontroller _IC:, the A / D conversion and processing.

The voice part is composed of a buzzer LS ₁₇ three-stage tube Q _: , a resistor R ₂₈ , R _{2 S} , R ₁₀₁ , and an LED;

ICi 34th pin is connected to the resistor R _28, the other end of the transistor ₂₈ R (^ a!? End is connected, (c ^ the end of the 6 volt power supply is connected, is connected to the anode and Qi _e buzzer, a cathode LSi and resistor R ₂₉ is connected to the power supply ground and the other end connected to R ₂₉ in. of 3 feet resistor _{1 () 1, 1} R & lt ₍₎ the other end of _a light-emitting diode LED ^ LEDi the other end of the power supply ground.

The output pulse level of the MCU I/O port 34 pin is controlled by the resistor R _{28 to} limit the conduction and cut-off of the triode (^ and the triode (the _6- terminal of the ^ will generate a pulsating DC signal flowing through the buzzer LSp buzzer will Send a sound corresponding to the pulse frequency. If the 34-pin output of the MCU is constant at a high level or a low level, then the triode (^ will be in a constant on or off state, so that the buzzer has no pulsating current flowing through. Sound, the resistor R _{2 9} acts as a current limiting.

The leak detection is as follows: by the operational amplifier IC ₉ , the gas sensitive resistor R ₃₂ , the positioner RF ₄ , the resistors R ₃₃ , R ₃₄ ,

R ₃₆ , R ₃₇ , R _{1 () 3} ;

Gas-sensitive resistor, respectively resistor R ₃₂ R _34, R ₃₆ is connected to the other end 6 volt power supply, the power supply is connected to the other end of R _34, R ₃₆ and the other end of the third leg of the IC _{9, 9} of the second IC feet and resistor R ₃₇ is connected to the other end of the potentiometer R ₃₇ RF pin ₄ is connected to the third, the first RF pin is connected to the resistor R _{4 1 D 3, R 1 ()} 3 to the other end of the power supply, the RP ₄ The second leg is connected to the resistor R ₃₃ , the other end of the R ₃₃ R is connected to the 6 volt power supply, and the first leg of the IC _S is connected to the second pin. .

The gas sensitive resistor R ₃₂ and the resistor R ₃₄ are divided, and the divided voltage signal is sent to the comparison input terminal 3 of the operational amplifier IC ₉ via the resistor R ₃₁ , and the resistors R ₃₃ , RP ₄ , R _{1 D 2 are} divided and pressed to compare the voltage. The comparison input of the delivery amplifier 1C ₉ is another - terminal 2 pin, normal: ₉ pin 3 voltage is lower than 2 pin voltage, IC ₉ pin 1 output low level, when there is air leakage, the resistance of the resistor will decrease, IC ₉ pin 3 voltage rise High, when it is higher than IC ₂ 's 2 pin, IC ₉ 's 1 pin will output a high level to the 2 1 pin of the MCU ^2, the single machine will collect and process the signal, the positioner RF ₄ is to adjust the air leak. Sensitivity of detection.

The ignition low voltage detection is composed of an operational amplifier IC _{1 ()} , a battery B resistor R ₄₁ , R ₄₂ , R ₄₃ , R ₄₄ ;

The positive terminal of the battery and the other end of the resistor R ₄₄ are connected to the second leg of the IC _{1 Q.} The third pin is connected to the resistor R _43, the other end of the resistor R ₄₃ are R _41, R ₄₂ is connected, the other end of R _42, R ₄₁ terminating another 6 volt positive supply, ICi. The first leg is connected to the 1st leg of the ICi.

Op amp. Comparing with resistors R ₄₁ , R ₄₂ , R ₄₃ , R ₄₄ and firing dry cells, R ₄₁ ,

The voltage division of R ₄₂ provides a comparison reference voltage when the battery voltage is lower than the reference voltage. The first pin will output a high level to the microcontroller ICi Γ by the microcontroller 1. ₁ Perform signal collection and processing.

The infrared remote control receives: by the infrared integrated receiver IC ₁₆ , capacitor C _{1 ()} . The resistor R _{1 () 4 is} composed; the second leg of the infrared integrated receiver ICi _e is connected to the I 7 pin of the Id ₆ and the resistor R _{1 Q4} respectively, and the other end of the R ₁₀₄ is connected to the 6 volt positive power supply and the capacitor. . The other end is connected to the battery ground.

Infrared receiver ₁₆ receives the modulated infrared signal via capacitor C _{1 D} . After filtering, the interrupt port of the single chip microcomputer is sent, and the single chip IC _x performs pulse width calculation on the infrared signal to demodulate the corresponding key value and then perform corresponding processing.

The output control part is: by optocoupler IC^, IC ₁₂ , IC ₁₃ , resistor R ₂₅ , R ₁₉ , R ₂₆ , _{2 7} , R ₂₃ , R ₂₄ , transistor Q ₇ , relay Kp solenoid valve battery B switch Si ₇ , S ₁₈ , motor drive chip IC ₁₄ , motor ignition pulse generating circuit ICi ₅ ;

(1) Left-hand ignition: Κ^, the 40-pin resistor R ₂₅ , the other end of R ₂₅ is connected to the 2nd pin of the optocoupler IC^, the 1st pin of the ICi is connected to the 6-volt power supply, the 6th pin of the i Connect 1 2 volt power supply, IC^'s 5th pin is connected to resistor R ₁₉ , and the other end of R ₁₉ is connected to the transistor Q b terminal. (5 ₇ is connected to 12 volt power supply, (^ _{7 6} terminal relay 1^ The control end, the other end of the control is grounded, the controlled end switch 1 is connected to the 12 volt power supply at one end, and the other end of the electromagnetic valve 1^ is grounded at the other end, 5^ the real controlled end switch 2, one end is connected to the outer casing, The other end is connected to the positive end of the battery, and the negative terminal is connected to the control end of the pulse ignition generator Id ₅ ;

When the 40 pin of the MCU outputs a high level, there is no voltage difference between the 2nd pin and the 1st pin of the optocoupler IC. The 5th pin of the optocoupler will output a low level to turn off the transistor Q ₇ , and the relay 1 ^ turns off the solenoid valve 1 ^No current, turning off the gas also makes the power of the ignition drive chip ₅ disconnected from ignition;

When the 40 pin of the MCU outputs a low level, the 2nd pin of the optocoupler ICi i is turned on with the 1st pin, and the 5th of the optocoupler Pin will output high transistor Q ₇ is turned on, the solenoid relay valve 1 ^ current flows also shut off the gas supply so that ignition starts driving chip ₅ is turned on ignition;

(2) Left fire: 1. ₁ of the 39-pin resistor R _2S , the other end of R ₂₆ is connected to the second pin of the optocoupler IC ₁₂ , the first leg of the IC ₁₃ is connected to the 6 volt power supply, and the sixth pin of the IC ₁₂ is connected to the ₁₂ volt power supply, IC ₁₂ The fifth leg is connected to the resistor R ₂₃ , the other end of the R ₂₃ is connected to the second leg of the Si ₇ and the second leg of the Id ₄ is connected, the ^third leg of the Si ₇ is grounded, and the seventh and eighth pins of the IC ₁₄ are respectively connected to the motor. Input of I^;

(3) Left small fire: IC^ 38 is connected to resistor ₂₇ , the other end of R ₂₇ is connected to the second pin of optocoupler IC ₁₃ , IC ₁₃ is connected to 6 volt power supply, and IC ₁₃ is connected to 6th pin. For the 2 volt power supply, the fifth pin of IC ₁₃ is connected to the resistor R ₂₃ , the other end of R ₂₄ is connected to the first leg of the switch S ₁₃ , the second leg of the S ₁₈ is connected to the third leg of the IC ₁₄ , and the third leg of the S ₁₈ Grounding

When the third pin of the microcontroller ICi outputs a high level, the second pin of the optocoupler IC ₁₃ has no voltage difference, and the fifth pin of the optocoupler outputs a low level to the third step of the motor driving chip ICi ₄ , At this time, the motor has no action; when the 38th pin of the MCU outputs a low level, the 2nd pin of the optocoupler ₃ is turned on with the 1st pin, and the 5th pin of the optocoupler outputs a high level through the current limiting resistor R ₂₄ and the switch S. _The rear feed motor drives the third pin of the chip IC ₁₄ , when the motor rotates to the maximum, the switch S _{18 will be} opened, the third pin of the IC ₁₄ will be low, and the motor will stop;

(4) The display portion of the right output control portion and the left output control portion are the same - the microprocessor IC transformer Ί , the VFD connector J ₂ , and the resistor R _{1 () 5} ;

1 ^ 4, 5, 6, 7, 8 feet respectively J 8, 9, 1 0, 1 1, 1 2 pin ₂ is connected, J 1 foot ₂ is connected to the power supply ground, J 2 _2, The 3 feet are respectively connected to the output of the transformer T, the 4th pin of J ₂ is connected to the 6 volt positive power supply, the 5th pin of J ₂ is connected to the 40 volt positive power supply, and the 6th pin of J ₂ is connected to the resistor R _{l fl5} , R _{1 Q5} The other end is connected to a 40 volt power supply, the input terminal of the transformer is connected to 220 AC mains, and the middle tap of the output is connected to the power ground;

The MCU uses the 4, 5, 6, 7, and 8 pin serial input and output data and control signals to the VFD drive interface J ₂ to control the content and indication of the VFD display;

The infrared non-pot detection portion is composed of an integrated receiver IC ₄ , a non-gate IC ₃ , and resistors R _{1 D6} , R ₁₀₇ , R _n . , capacitor C _{1 (U} , C ₁₀₂ , diode D infrared light-emitting tube PD, composed;

The first pin of IC ₄ is connected to the 6 volt positive power supply, the third pin of IC ₄ is connected to the power ground, and the second pin of IC ₄ is connected to the electrical circuit R _{1 Q7} and the capacitor C _1Q1 respectively, and the other end of R _{1 () 7} is The 6 volt positive power supply is connected, the other end of the IC _lfll is connected to the diode D, and the other end is connected to the resistor ₀₆ , the capacitor C _1Q2 , and the ^4th pin of the non-gate IC _{3 to} the 1st 0th pin. IC ₃ 1 4 feet to 6 volt positive power, the second IC pin ₃ and pin 7 of IC ₃ is connected to power ground. The second leg is connected to the resistor Ru. , . The other end is connected to the infrared light-emitting tube P, and the other end is connected to the power ground;

The second pin of the MCU outputs a pulse of a certain frequency through the resistor. After the current limiting, the infrared light emitting tube emits a certain frequency of infrared output; when there is a pot, the infrared light is reflected by the pot body, and the integrated receiver IC ₄ receives the pulse signal from the second pin of the IC ₄ through the diode rectification, the capacitor C _{1 () 2} filter, and resistor R _{1 Q6} discharge loop after the non-gate to the integer output low level and then IC ₃ inverting output high level through the 0 0 pin of the microcontroller, by the microcontroller to collect and Corresponding processing, when there is no pot, the infrared light is not reflected, the integrated receiver 1 has no infrared light receiving, the second pin of IC ₄ will output a fixed high level separated by the capacitor C _1Q1 , no current charges the capacitor C _1Q2 , capacitor C _{1 () 2} through the resistor. Discharge circuit ₆ after the input of the NAND gate is low NAND gate IC ₃ outputs a high level and then outputs a low level by the microcontroller 20 pin of the IC ₃ through the inverter performed by the microcontroller preclude set accordingly and ICi deal with.

The infrared emitting portion to be extended is composed of a resistor R _{1 Q g} , R _{1 D 4} , a triode Q ₂ , and an infrared light emitting tube PD ₂ ;

The first pin of IC ₂ is connected to the resistor. ₉ , . _{9 The} other end is connected to the 13 end of the transistor 3⁄4, (3⁄4 of the ₆ end grounded, Q ₂ c end connected to the infrared light emitting diode PD ₂ , ?. ₂ the other end of the resistor R _{1 Q 4} , R _{1 D 4} the other end 6 volt positive power supply; single-chip microcomputer 1. ₁ pin output with software-modulated pulse output of different frequencies through the resistor. ₉ after the current limit, the transistor Q _{2 is} intermittently turned on, the infrared light-emitting tube PD^ emits the same frequency as the IC 1 pin Infrared light output to control the motion of other devices.

The serial interface part is: by RS 2 3 2 converter IC ₂ , DB _g core interface ^, capacitor C _{ia 3} , C 1 0 4, Ci o 5, C! o 6 composition;

Pins 14 and 15 of ICi are connected to pins 1 and 1 of level shifter IC ₂ , and pin 1 of IC ₂ is connected to capacitor. _{1 () 4,} C _{l fl} other end ₄ of the IC 3 feet _2, IC 4 feet ₂ to the capacitor C _{1 () 3,} C the other end of the IC _{1 Q 3 2} ⁵ feet, IC pin 2 ^ ₂ to the capacitor. ₅ , the other end of C _{1 Q 5} is connected to the 6 volt positive power supply. The 6th pin of IC ₂ is connected to the capacitor C _{1 () 6} , the other end of C _{1 D 6} is connected to the power ground, and the 16th pin of IC ₂ is connected to 6 volts. positive power source, the IC 15 of the pin ₂ is connected to power ground, first the IC 12, pin 14 and _2, respectively, DB ₉ of the core 2, pin 3 connected to the interface, of 7, 5 feet power ground.

The power supply part: 2 2 0 volt AC is filtered by the transformer step-down rectification, the output is positive 6 volt power supply, positive 12 volt power supply, positive 40 volt power supply and ground, positive 6 volt power supply respectively with the first 0 , pin 30, IC ₂ pin 1, IC ₄ pin 1, IC ₁₆ pin 1, IC ₅ pin 8, IC ₆ pin 8.

The beneficial effects of the water invention are: the scan input through the keyboard and the processing of the corresponding key value, and the output of the display data And refresh, temperature acquisition and operation processing control the corresponding output level of the control terminal, receiving and transmitting of serial data, detection and processing of ignition low voltage signal, detection and processing of air leakage, output of speech frequency, output of alarm signal, Output control of the control part, software decoding of the infrared remote control signal and processing of the corresponding signal, emission control of the infrared signal and scanning processing without the pot detection input, software delay, storage of the timing function, fuzzy control of the size and fire, etc. To achieve the intended purpose. DRAWINGS

 The structure and function of the smart gas stove of the present invention will be further described in detail below with reference to the accompanying drawings, in which:

 BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a general schematic view of a cooktop of the present invention.

 Figure 2 is a circuit diagram of the keyboard portion, the temperature measuring portion, the voice portion, the infrared transmitting portion to be extended, and the serial interface portion of the present invention.

 Fig. 3 is a circuit diagram of a leak detecting portion of the present invention. Fig. 4 is a circuit diagram of a portion of the ignition low voltage detection portion of the present invention.

 Figure 5 is a circuit diagram of the infrared remote control receiving portion of the present invention.

 Figure 6 is a circuit diagram of an output control portion of the present invention.

 Figure 7 is a partial circuit diagram of the display of the present invention.

 Figure 8 is a circuit diagram of a portion of the non-pot detection portion of the present invention. Detailed ways

 Example 1:

 In Fig. 1, there is a gas stove 1, a gas cooker 1 is provided with a pan holder 2, and the pan holder 2 is provided with an ignition device at the front end of the gas stove 1; the front end of the gas stove 1 is provided with a control panel 3, and the surface of the control panel 3 is Control keyboard, display and remote control receiving induction ^ I, inside control panel 3; installed with computer control system; gas stove 1 is also provided with temperature sensing head 4 and air leakage sensor 5 on the panel. The principle circuit of the intelligent gas stove is based on the single-chip microcomputer as the core controller. 1 part: the circuit part of the disk, the temperature measurement part, the voice part, the air leak detection, the low-voltage detection of the ignition, the infrared remote control receiving, the output control part, the display part, the power supply Part of the functional unit is composed.

Keyboard circuit part: by the microcontroller IC^ buttons S ₂ , S ₃ , S ₄ , S ₅ , S ₆ , S ₇ , S ₈ , S ₉ , S ₁₀ , Su , S ₁₂ , S ₁₃ , S ₁₄ , S ₁₅ , S ₁₆ , resistors R ₁₅ , R ₁₆ , R ₁₇ , R ₁₈ - 1. The 2 2 pin of ₁ is connected to one end of the buttons S ₄ , S ₃ , S ₂ , Si, the other end of the S ₄ button is connected to one end of the resistor R ₁₈ , and the other end of R ₁₈ is 1. The 2 6 pins of ₁ are connected, the other end of the S ₃ button is connected to the resistor ₇ , and the other end of the R ₁₇ is connected? 7 feet are connected, the other end of the S ₂ button is connected to one end of the resistor R ₁₆ , and the other end of the R ₁₈ is working? 8 feet are connected, the other end of the Si button is connected to one end of the resistor ₅ , and the other end of the R ₁₅ is connected to the 2 9 leg of the 1^;

^? 3 feet with the key S _8, S _7, is connected to _6, one end of the S S _5, and is connected to another end of the resistor R S ₈ key _18, connected to the other end of R ₁₈ and 1 ^ of 26 feet, S ₇ key end of the other end is connected to the resistor R _17, R ₁₇ is connected to the other end of the pin and the IC 2 7, and the other end connected to one end of the resistor R S ₆ keys _16, R ₁₈ and the other end:! ^? Pin 8 is connected, is connected to one end of the other key S ₅ and the resistor R _15, and R is connected to the other end ₁₅ of the pin IC R _29;

The 2 4 pin of 1^ is connected to one end of the buttons S ₁₂ , S „ , S _{1 D} , S ₉ , the other end of the S ₁₂ button is connected to one end of the resistor R ₁₈ , and the other end of the R _{1 S} is: 2 of the ^ ₁ 6 pin is connected, is connected to another end of the key with a resistor R _17, the other end of R ₁₇ is connected to the IC 2 7 feet, Si. the other end of the key is connected to one end of resistor R _16, the other end of R ₁₈ and workers ? pin 8 is connected, is connected to another end of the resistor R and the switching station _{15, 15} and the other end of R ^ 1 is connected to the pin 29;

The 2 5 pin of _{1 is} connected to one end of the switches S _{1 6} , S ₁₅ , S ₁₄ , S ₁₃ , the other end of the S ₁₆ switch is connected to one end of the resistor R ₁₈ , and the other end of R ₁₈ is 1. The other end of the S ₁₅ switch is connected to one end of the resistor R 1 ₇ , and the other end of the R ₁₇ is connected to 1. The 2-7 pin of ₁ is connected, the other end of the Si ₄ switch is connected to one end of the resistor R ₁₆ , the other end of R ₁₈ is connected to the 2 8 pin of ₁ , and the other end of the switch is connected to one end of the resistor R ₁₅ , R ₁₅ The other end is with 1. ₁ 2 9 feet connected;

The button Si is the setting button, the time, temperature, and selection control button can be set; the button S ₂ is the time button, which can be used as the time display mode conversion and the clock and minute setting selection; the button S ₃ is the temperature button, As the temperature display mode conversion and boiling point temperature setting selection; button S ₄ is the selection button, which can be used as the selection of the work type; button 3 ₅ is the programming button, which can be used as the setting for the timing operation with the key used in conjunction with it. There are 3 ₆ start keys, S ₇ end keys, S ₈ (S ₁₂ ) confirmation keys, and Si. Add button, Si i decrease button; button S ₉ is the start button, which can be used to start timing and manual cooking function; button S ₁₃ is the power button, which can be used as the line power on and off; buttons S ₁₄ and S ₁₅ are the size The fire key can control the size of the gas of the other cooktop; the button Si ₆ is the fire key to control the shut-off of the gas of the other cooktop.

The temperature measurement section in Fig. 2: by the microcontroller Id, the operational amplifier IC ₅ , IC ₆ , the thermistor RF ₂ , the positioner RP RF ₃ , the resistor R ₃ . , R ₃₁ , R ₃₂ , electrolytic capacitor C ₉ , capacitor C ₇ , C ₈ ; Thermistors P ₂ - a power supply terminal connected to ground and the other terminal of op amp IC with R ₃₁ 3 is connected to pin _5, R ₃₁ and the other end is connected to the 6 volt power supply; a ^second IC pin ₅ of IC ₅ and are The first leg, the resistor R ₃ . Connected, R ₃ . The other end of the IC ₆ is connected to the second leg of the IC ₆ ; the third leg of the IC ₆ is connected to the first leg and the third leg of the locator RF ₃ , and the second leg of the RF ₃ is respectively connected to the ^third leg of the RF ₃ ; The first leg of the IC ₆ IC6 is connected to the third leg of the third leg, and the first leg of the IC ₆ IC6 is connected to the power ground. ^ No.? The foot is connected to R _{32 and} the other end of R _{32 is} connected to a 6 volt power supply;

The thermistor F ₂ and the resistor R ₃₁ form a voltage dividing circuit, and the resistance value of the RF ₂ changes with temperature, and the op amp IC ₅ performs voltage following R ₃ . After the amplifier is sent to the op amp 3⁄4 ₆ for signal amplification and zero adjustment, it is sent to the microcontroller IC for A/D conversion and processing.

The voice part of Figure 2: consists of the buzzer LS^ three-stage tube resistor R ₂₈ , R ₂₉ , R ₁₀ i> LED LED i ;

ICi 34th pin is connected to the resistor R _28, R ₂₈ is connected to terminal 15 of the transistor and the other end (a ^, C 6 volt power supply is connected to the terminal, ₍₆ ^ buzzer anode connected LSi, LSi and cathode The resistor R _{29 is} connected, and the other end of the R ₂₃ is connected to the power ground. The third end of the ICi is connected to the resistor R _{1 Q 1} , and the other end of the R _{1 D 1} is connected to the other end of the LED LEDi.

The output pulse level of the I/O port 34 pin of the MCU ^^ is limited by the resistor R _{28 and} then the transistor is turned on and off. The e-end of the triode will generate a pulsating DC signal flowing through the buzzer LS^ buzzer will issue a pulse frequency corresponding to the noise, if the microcontroller ₃₄ outputs a constant pin high or low so transistor (^ a constant state or turned off, such that no ripple current buzzer If the sound does not sound, the resistor R ₂₉ acts as a current limiter.

Leakage detection in Figure 3: consisting of op amp IC ₉ , varistor R ₃₂ , locator F ₄ , resistors R ₃₃ , R ₃₄ , R ₃₆ , R ₃₇ , R _{1 () 3} ;

Gas-sensitive resistor, respectively resistor R ₃₂ R _34, R ₃₆ is connected to the other end 6 volt power supply, the power supply is connected to the other end of R _34, R ₃₆ and the other end of the third leg of the IC _{9, 9} of the second IC feet and resistor R ₃₇ is connected to the other end of the potentiometer R ₃₇ RF third pin ₄ is connected, is connected to the first pin and the RF resistance R _{l fl 4} is _3, R _{1 D 3} to the other end of the power supply, RF ₄ The second pin is connected to the resistor R ₃₃ , the other end of the R ₃₃ is connected to the 6 volt power source, and the first leg of the IC ₉ is connected to the second leg of the ICi;

The gas sensitive resistor R ₃₂ and the resistor R ₃₄ are divided, and the divided voltage signal is sent to the comparison input terminal 3 of the operational amplifier IC ₉ via the resistor R ₃₁ , and the resistors R ₃₃ , RF ₄ , R _{1 Q 3 are} divided and pressed to compare the voltage. Send the transport amplifier 1. ₉ compare input to the other end 2 feet, normal: IC _g 's 3 pin voltage is lower than 2 pin voltage, ₉ pin 1 output low level, when there is air leak The resistance of the time sensitive resistor will decrease, and the voltage of the 3 pin of IC _g will rise. When it is higher than the 2 pin of IC _S , the 1 pin of IC _g will output a high level to the 2 1 pin of the single chip ₁ , and the single machine will The signal is collected and processed, and the positioner 1^ ₄ is used to adjust the sensitivity of the leak detection.

The ignition low voltage detection in Figure 4: consists of the operational amplifier IC _{1 ()} , battery B resistors R ₄₁ , R ₄₂ , R ₄₃ , R ₄₄ ;

The positive terminal of the battery and the other end of the resistor R ₄₄ are connected to ICi. The second leg is connected. The third pin is connected to the resistor R _43, the other end of the resistor R ₄₃ are R _41, R ₄₂ is connected, the other end of R _42, R ₄₁ terminating another 6 volt positive supply. The 1st foot of the 1st foot;

Op amp. Comparing with the resistors R ₄₁ , R ₄₂ , R ₄₃ , R ₄₄ and the firing dry battery, the voltage division of R ₄₁ and R ₄₂ provides a comparison reference voltage when the battery voltage is lower than the reference voltage. The first pin will output a high level to the microcontroller IC for signal acquisition and processing by the microcontroller ICi.

The infrared remote control receiving in FIG. 5 is composed of an infrared integrated receiver IC ₁₆ , a capacitor C _{1 QQ} , and a resistor R _{i a4} ; the second leg of the infrared integrated receiver ₆ is respectively connected with a 17-pin, resistor. ₄ connected, . The other end of ₄ is connected to a 6 volt positive supply, capacitor d. The other end of _Q is connected to the battery ground;

The infrared receiving head ₆ receives the modulated infrared signal via a capacitor. . After filtering, the interrupt port of the MCU is sent, and the MCU performs pulse width calculation on the red signal to demodulate the corresponding key value and then perform corresponding processing.

The output control in Figure 6 is part 6: by optocoupler Id IC ₁₂ , IC ₁₃ , resistor R ₂₅ , R ₁₉ , R ₂₆ , R ₂₇ , R ₂₃ , R ₂₄ , transistor Q ₇ , relay solenoid valve battery Bp switch S ₁₇ , S ₁₈ , motor driving chip ₄ , motor ignition pulse generating circuit Id ₅ ;

(1) Left Ignition: 1 ^ 40 feet of resistor R _25, R optocoupler IC ₂₅ and the other end of the second leg is connected ^, IC ^ 6 connected to the first pin-volt power supply, IC ^ of 6 The foot is connected to the 12 volt power supply, the fifth leg of the IC^ is connected to the resistor R ₁₉ , and the other end of the R _ig is connected to the triode (the 13 end of the 3 ₇ , (the 0 terminal of the 0 ₇ is connected to the 1 2 power supply, and the 0 _{7 6} terminal relay) The electric control terminal, the other end of the control is grounded, the controlled termination switch 1 is connected to the 1 2 power supply at one end, and the other end is connected to the solenoid valve! ^, the other end is grounded, the controlled end switch 2 is connected to the outer casing, and the other end is connected to the outer casing. One end is connected to the positive end of the battery B, and the negative end is connected to the control end of the pulse ignition generator Id ₅ ;

When the 40 pin of the MCU outputs a high level, there is no voltage difference between the 2nd pin and the 1st leg of the optocoupler ICi i. The 5th pin of the optocoupler will output a low level to turn off the transistor Q ₇ , and the relay turns off the solenoid valve 1 ^ No current, turning off the gas also makes the power of the ignition drive chip ₅ disconnected from ignition;

When the 40 pin of the MCU outputs a low level, the optocoupler ^ is the first? The foot and the third leg are turned on, and the fifth pin of the optocoupler will output a high level to turn on the transistor Q ₇ , and the relay pulls the solenoid valve 1 ^ to have a current flowing through the closed gas. At the same time, the power of the ignition drive chip ₅ is turned on to start firing;

(2) Left-hand fire: ^^'s 3 9-pin resistor ₂₆ , the other end of R ₂₆ is connected to the 2nd pin of optocoupler IC ₁₂ , IC ₁₃ 's 1st pin is connected to 6 volt power supply, IC ₁₂ 's ^6th pin is connected 1 2 volt power supply, IC ₁₂ 's 5th pin is connected to resistor R ₂₃ , R ₂₃ is connected to the other end of switch S ₁₇ and the second leg of IC ₁₄ is connected to the second leg of IC ₁₄ , the third leg of S ₁₇ is grounded, IC ₁₄ 7, 8 feet are respectively connected to the input end of the motor Mi;

(3) Left small fire: 10 ₁ 3 ⁸ pin connected resistor R ₂₇ , R ₂₇ the other end is connected to the 2nd pin of optocoupler IC ₁₃ , IC ₁₃ 's 1st pin is connected to 6 volt power supply, IC ₁₃ is 6th The pin is connected to the 12 volt power supply, the fifth pin of the IC ₁₃ is connected to the resistor R ₂₃ , the other end of the R ₂₄ is connected to the first leg of the switch S ₁₃ , the second leg of the S ₁₈ is connected to the third leg of the IC ₁₄ , and the third leg of the Si ₈ ³ feet grounded;

When the pin 38 of the microcontroller output high optocoupler Id second pin with the first pin ₃ no voltage difference, the fifth optical coupler pin will drive the chip output low feed motor 3 feet _4, then The motor has no action;

When the 3rd pin of the microcontroller ICi outputs a low level, the 2nd pin of the optocoupler IC ₁₃ and the 1st pin are turned on, and the 5th pin of the optocoupler outputs a high level after the current limiting resistor R ₂₄ and the switch S _{1 S} Send the third leg of the motor drive chip IC ₁₄ , when the motor rotates to the maximum, the switch S _{18 will be} disconnected, the third pin of the IC ₁₄ will be low, and the motor will stop.

 (4) The right output control section is the same as the connection of the left output control section.

The display portion in FIG. 7 is composed of a microprocessor Id, a transformer Ί\, a VFD connector J ₂ , and a resistor R _{1 () 5} ;

1 ^ 4, 5, 6, 7, 8 feet respectively J 8, 9, 1 0, 1 1, 1 2 pin ₂ is connected, J 1 foot ₂ is connected to the power supply ground, J 2 _2, The 3 feet are respectively connected to the output of the transformer ^, the 4th pin of J ₂ is connected to the 6 volt positive power supply, the 5th pin of J ₂ is connected to the positive power supply of 40 volts, and the 6th pin of J ₂ is connected to the resistor R _{1 Q 5} , R The other end of the ₁₀₅ is connected to the 40 volt power supply, the input end of the transformer 1\ is connected to the 2 2 0 AC mains, and the middle tap of the output is connected to the power ground;

The MCU uses the 4, 5, 6, 7, and 8 pin serial input and output data and control signals to the VFD drive interface J ₂ to control the content and indication of the VFD display;

The infrared non-pot detection part in Figure 8: by integrated receiver IC ₄ , non-gate IC ₃ , resistor R _{1 Q 6} , R ₁₀₇ , R ₁₁₀ , capacitor C _{1 Q 1} , C ₁₀₂ - diode D infrared tube composition;

The first pin of IC ₄ is connected to the 6 volt positive power supply. The third pin of IC ₄ is connected to the power ground. The second pin of IC ₄ is connected to the resistor R ₁₀₇ capacitor C _{1 Q 1} , and the other end of R _{la 7} is 6 volt positive. The power supply is connected, and the other end of the IC _{1 () 1} is connected to the other end of the diode D ₁₇ and the resistor R _{1 Q 6} , the capacitor C _{1 Q 2} , and the fourth leg of the non-gate IC ₃ 2 0 feet. IC pin ₃ 1 4 6 volt positive supply connection, the second IC pin ₃ and pin 7 of IC ₃ is connected to power ground. IC _X 's 2nd pin is connected to ^. , . The other end of the infrared light-emitting tube PD PDi is connected to the power supply ground; the second pin of the single-chip ICi outputs a pulse of a certain frequency through the resistor! . After the current limiting, the infrared light emitting tube emits a certain frequency of infrared output; when there is a pot, the infrared light is reflected by the pot body, and the integrated receiver IC ₄ receives, and the pulse signal from the second pin of the IC ₄ is output through the diode 0 rectification. , Capacitor C _{1 D 2} filtering, and resistor 1^. _{After the} discharge circuit, the non-gate is sent to the non-gate to output the low level. After the IC _{3 is} inverted, the output level is high. The second pin of the ICI ICi is collected by the single chip ICi and processed accordingly. When there is no pot, the Infrared light is non-reflective, integrated receiver ^ ₄ no infrared light receiving, IC ₄ 's 2nd pin will output a fixed high level isolated by capacitor C _{1 Q 1} , no current charges capacitor C _{1 Q 2} , capacitor C _{1 () 2} After the resistor R _{1 () 6} discharge circuit, the input of the non-gate is low level non-gate 1. ₃ output high level and then output low level after IC ₃ inversion, through the 20th pin of the microcontroller ICI, the acquisition by the MCU and corresponding processing.

The infrared emitting portion to be expanded in Fig. 2 is composed of a resistor R _{1 Q 9} , a R _{1 Q 4} transistor Q ₂ , and an infrared light emitting tube PD ₂ ;

ICi's first pin is connected to the resistor ^^ ₁ . _{9 the} other end of the triode (5 ₂ of the 13 end, (^ ₂ of the ₆ end of the ground, 0 ₂ (: terminate the infrared LED PD ₂ , PD ₂ the other end of the resistance ^. ₄ , R _{1 Q 4} of the other One end is connected to a 6 volt positive power supply;

The single chip IC^1 pin outputs the pulse output of the different frequencies modulated by software through the resistor. After the current limiting, the transistor Q _{2 is} intermittently turned on, and the infrared light emitting diode PD^ is emitted with 1. The 1 pin has the same frequency of infrared light output to control the motion of other devices.

In the figure, the serial interface part of 2: by RS 2 3 2 converter IC ₂ , DB ₉ core interface: ^, capacitor C _{1 D 3} ,

C io 4 ^ Ci o 5, C _χ o 6 composition;

The first and fifth legs of ICi are connected to the first, third and first legs of the level shifter IC ₂ , and the first leg of IC ₂ is connected to the other end of the capacitor C _{1 () 4} , C _{1 () 4} pin 3 of the IC _2, the fourth IC pin ₂ to the capacitor _{C 1 Q 3, C 1 (} ) the other end ₃ of the IC ₂ 5 feet, the second pin ₂ of the IC to the capacitor. _{1 () 5} , C _{1 Q 5} is connected to the 6 volt positive power supply at the other end. The 6th pin of IC ₂ is connected to the capacitor C _{1 () s} , the other end of C _{1 () 6} is connected to the power supply ground, IC ₁ of the 1st 6 feet to 6 volt positive power supply, the IC of 15 feet ₂ to the power ground, the IC 1 2, 1 4 pin ₂ is connected to the second pin 3 _9-pin interface DB, respectively, of 7, 5 feet power Ground.

Power supply part: 2 2 G volt AC after transformer step-down rectification and filtering, output positive 6 volt power supply, positive 1 2 power supply, positive 40 volt power supply and ground terminal, positive 6 volt power supply and ICi's 1 0, 3 0 respectively Feet, 1. ₂ of 1 foot, 1. 1 pin of ₄ , pin 1 of IC ₁₆ , pin 8 of IC ₅ , pin 8 of ICJ; During operation, the microprocessor is mainly responsible for the microcontroller IC i: keyboard scan input and corresponding key value processing, display data output and refresh, temperature acquisition and operation processing control the corresponding control terminal output level, serial data reception and transmission , detection and processing of ignition low voltage signal, detection and processing of air leakage, output of speech frequency, output of alarm signal, output control of control part, software decoding of infrared remote control signal and processing of corresponding signal, emission of infrared signal Control and scan processing without pot detection input, software delay, timing function storage, fuzzy control of size and fire.

Claims

Rights request

1. A smart gas stove, characterized in that: there is a gas stove, a gas cooker is provided with a pot rack, and the pot rack is provided with an ignition device at the front end of the gas stove; the front end of the gas stove is provided with a control panel, the control panel The surface is a control keyboard, a display and a remote control receiving sensor. A computer control system is installed inside the control panel; a temperature sensing head and a gas leakage sensor are also arranged on the panel of the gas stove.

 2. A smart gas stove, characterized in that: the intelligent gas stove principle circuit is based on the single chip IC1 as the core controller externally connected to the 1 1 part: the health circuit part, the temperature measurement part, the voice part, the air leak detection, the ignition low pressure detection The infrared remote control receiving, output control part, display part, non-pot detection part, infrared transmission part to be extended, serial interface part, and functional unit of the power supply part are composed.

 3. The smart gas stove according to claim 2, wherein the single chip IC1 is used as a core controller external part circuit, and the feature is: the keyboard circuit part: by the micro controller IC1, l, S2, S3, S4, S5 , S6, S7, S8, S9, SI 0, SI 1, SI 2, SI 3, SI 4, SI 5, SI 6, resistors Rl 5, R1 6, R1 7, R1 8;

 The 2 2 pin of IC 1 is connected to one end of button S 4, S3, S 2, SI, the other end of S 4 button is connected to one end of resistor R18, and the other end of R1 8 is connected with pin 26 of IC1, S3 button The other end is connected to the resistor R1 7. The other end of the R1 7 is connected to the pin 7 of 1.1, the other end of the S 2 button is connected to one end of the resistor R 16 , and the other end of the R1 8 is connected to the pin 28 of the IC1. Connected, the other end of the S1 button is connected to one end of the resistor R1 5 , and the other end of the R 1 5 is connected to the pin 9 of the IC 1;

 The 2 3 pin of the IC 1 is connected to one end of the buttons S 8 , S 7 , S 6 , S 5 , the other end of the S 8 button is connected to one end of the resistor R1 8 , and the other end of the R 1 8 is connected to the 26 pin of the IC 1 , The other end of the S 7 button is connected to one end of the resistor R1 7 , the other end of the R1 7 is connected to the 27 pin of the IC 1 , the other end of the S 6 button is connected to one end of the resistor R1 6 , and the other end of the R1 8 is connected to the IC 1 . 8 feet are connected, the other end of the S 5 button is connected to one end of the resistor R 1 5 , and the other end of the R 1 5 is connected to the 2 9 pin of the IC 1;

 The 2 4 pin of IC 1 is connected to one end of the buttons S1 2, S1 1 , S1 0, S9, the other end of the S 1 2 button is connected to one end of the resistor R1 8 , and the other end of the R1 8 is connected to the 26 pin of the IC 1 , The other end of the SI 1 button is connected to one end of the resistor R1 7 , the other end of the R1 7 is connected to the 27 pin of the IC 1 , the other end of the S 10 button is connected to one end of the resistor R1 6 , and the other end of the R1 8 is connected to the IC 1 2 8 feet are connected, the other end of the SI 1 switch is connected to one end of the resistor R1 5 , and the other end of the R1 5 is connected to the 2 9 pin of the IC 1;

The 2 5 pin of IC 1 is connected to one end of the switches S 1 6 , S1 5 , S1 4 , S1 3 , and the S 1 6 switch The other end is connected to one end of the resistor R18, the other end of the R1 8 is connected to the 26 pin of the IC1, the other end of the S1 5 switch is connected to the end of the resistor R1 7 , and the other end of the R1 7 is connected to the 27 pin of the IC1. Connected, the other end of the S1 4 switch is connected to one end of the resistor R16, the other end of the R1 8 is connected to the 28 pin of the IC1, the other end of the SI 1 switch is connected to one end of the resistor R1 5, and the other end of the R1 5 is connected to the IC1. 2 9 feet connected;

 The button S1 is the setting button, the button S 2 is the time button, the button S3 is the temperature button, the button S 4 is the selection button, which can be used as the selection of the work type; the button S 5 is the programming button, and the button used with the button is S6 Start button, S7 end button, S83⁄4S1 2 confirmation button, S1 0 increment button, SI 1 decrease button; button S 9 is the start button, button S1 3 is the power button, buttons S1 4, S1 5 are the size fire button, button S1 6 is the ignition key.

 4. The smart gas stove according to claim 2, wherein the single chip IC 1 is used as a core controller external part circuit, wherein: the temperature measuring part: by the microcontroller IC1, the operational amplifier IC5, IC1 6, heat Sensing resistor RF 2, positioner RF 1 , RF 3 , resistor R 3 0, R 3 1 , R3 2, electrolytic capacitor C9, capacitor C7, C8;

 The other end of the thermistor F 2 is connected to the power ground, and the other end is connected to the third leg of the R 3 1 and the operational amplifier IC 5, and the other end of the R 3 1 is connected to the 6-volt power supply; the second leg of the IC 5 is respectively The first pin of IC 5 and the resistor R 3 0 are connected, and the other end of R 3 0 is connected to the second leg of IC 6; the third leg of IC 6 is the first leg of the locator RF 3 and the third pin of RF 1 respectively. The legs are connected, and the second leg of RF 3 is connected to pin 3 of RF 3, pin 1 of IC 6 , pin 3 of IC 1 , and pin 1 of RF 1 is connected to power ground, RF 1 2 The foot is connected to R3 2, and the other end of R3 2 is connected to a 6 volt power supply;

 The thermistor RF2 and the resistor R3 1 form a voltage dividing circuit, and the resistance value of the RF 2 changes with the temperature, and the voltage of the operational amplifier IC 5 is sent to the operational amplifier IC 6 through R 3 0 for signal amplification and zero point adjustment. The microcontroller IC 1 performs A/D conversion and processing.

 5. The smart gas stove according to claim 2, wherein the single-chip microcomputer IC 1 is used as a core controller and the partial circuit is externally controlled, wherein: the voice portion is: a buzzer LSI, a three-stage tube Q1, and a resistor R2 8 , R 2 9 , R 1 0 1 , LED LED 1;

 The third leg of IC1 is connected to the resistor R2 8 , and the other end of R 2 8 is connected to the b terminal of the transistor Q 1 .

The c-terminal of Q1 is connected to a 6-volt power supply, the e of Q1 is connected to the anode of the buzzer LSI, the cathode of the LSI is connected to the resistor R 2 9 , and the other end of the R2 9 is connected to the power ground; the third leg of the IC1 is connected to the resistor R1 0 1 , the other end of R1 0 1 is connected to the LED 1 , and the other end of the LED 1 is pressed to the ground;

The output pulse level of I / 0 port 3 4 pin of IC 1 is regulated by R 2 8 and then turned on and off by transistor Q 1 . The e terminal of transistor Q 1 will generate a pulsating DC signal flowing through the buzzer. LS 1, buzzer The sound corresponding to the pulse frequency will be emitted. If the 3 4 pin of the MCU outputs a constant 髙 level or low level, the transistor Q1 will be in a constant on or off state, so that the buzzer has no pulsating current flowing through. A sound is emitted, and the resistor R2 9 acts as a current limiting.

 6. The smart gas stove according to claim 2, wherein the single chip microcomputer IC 1 is used as a core controller externally connected to the smashing circuit, wherein: the gas leakage detection: by the operational amplifier IC9, the gas varistor R3 2 , the locator RP4, the resistors R3 3, R3 4, R3 6, R3 7, R1 0 3;

 The gas sensitive resistor R3 2 is connected to the resistors R3 4 and R3 6 respectively, the other end is connected to the 6 volt power supply, the other end of the R3 4 is connected to the power ground, and the other end of the R 3 6 is connected to the third leg of the IC 9, the IC 9 Pin 2 is connected to resistor R 3 7 , the other end of R3 7 is connected to pin 3 of potentiometer RF4, pin 1 of RF4 is connected to resistor R1 0 3 , and the other end of R1 0 3 is connected to the power ground, the second of RF 4 The pin is connected to the resistor R3 3, the other end of the R3 3R is connected to the 6 volt power supply, and the 笫1 pin of the IC 9 is connected to the 2nd pin of the IC 1;

 The gas sensitive resistor R3 2 and the resistor R3 4 are divided, and the voltage dividing signal is sent to the comparison input terminal 3 of the IC 9 through the resistor R3 1 , and the resistors R3 3, RF4, and R1 0 3 are divided to provide a common voltage transmission. Put the comparison input of IC 9 to the other end 2 pin. When normal: IC9's 3 pin voltage is lower than 2 pin voltage, IC9 pin 1 outputs low level, when there is air leakage, the resistance of the varistor will decrease, IC9 The voltage of the 3 pin rises. When it is higher than the 2 pin of IC9, the 1 pin of IC 9 will output a high level to the 2 1 pin of the IC 1 of the single chip microcomputer. The single machine will collect and process the signal. The positioner RF4 is used to adjust the leakage. The sensitivity of the gas detection.

 7. The smart gas stove according to claim 2, wherein the single-chip microcomputer IC 1 is used as a core controller and the partial circuit is externally controlled, wherein: the ignition low-voltage detection is performed by: an operational amplifier IC1 0, a battery B1, a resistor R 4 1. R4 2, R4 3, R4 4;

 The other end of the battery B 1 and the other end of the resistor R4 4 are connected to the second leg of the IC 10, the third leg of the IC 10 is connected to the resistor R4 3 , and the other end of the R 4 3 is connected to the resistors R4 1 and R4 2 respectively. The other end of R4 2 is grounded, the other end of R4 1 is connected to a 6 volt positive power supply, and the first leg of IC1 0 is connected to the 16th pin of IC1;

 The operational amplifier IC1 0 and the resistors R4 1 , R4 2, R4 3, R4 4 and the pyrotechnic battery B 1 form a comparator, and R4 1 and R4 2 perform voltage division to provide a comparison reference voltage, when the battery voltage is lower than the reference voltage IC The first pin of 1 0 will output the high level to the microcontroller IC 1, and the signal acquisition and processing will be performed by the single chip IC 1.

 8. The smart gas stove according to claim 2, wherein the single-chip microcomputer IC 1 is used as a core controller external part circuit, wherein: the infrared remote control receives: the infrared integrated receiver IC 1 6 , the capacitor C1 0 0 , The resistor R1 0 4 is composed;

The second leg of the infrared integrated receiver IC 1 6 is connected to the 71 pin of IC 1 and the resistor R 1 0 4 respectively. The other end of Rl 04 is connected to a 6 volt positive power supply, and the other end of the capacitor C1 0 0 is connected to the battery ground; the infrared receiving head IC1 6 receives the modulated infrared signal through the capacitor C1 0 0. After filtering, it is sent to the interrupt port of the single chip microcomputer, the single chip IC 1 Perform pulse width calculation on the red signal to demodulate the corresponding key value and then process accordingly.

 9. The smart gas stove according to claim 2, wherein the single-chip microcomputer IC 1 is an external part of the core controller, and the output control part is: the optocoupler IC1 1 , IC1 2 , IC1 3 , and the resistor R2 5, Rl 9, R2 6, R2 7, R2 3, R24, Transistor Q 7, Relay K 1, Solenoid valve L 1, Battery Β 1, Switch S 1 7, S 1 8, Motor drive chip IC 1 4, Motor Μ 1, the ignition pulse generating circuit IC1 5;

 (1) Left-hand ignition: IC1's 40-pin is connected to resistor R2 5, the other end of R2 5 is connected to the second pin of optocoupler IC 1 1 , and the first leg of IC 1 1 is connected to 6-volt power supply, IC 1 1 The 6th pin is connected to the 12 volt power supply, the 5th pin of IC 1 1 is connected to the resistor R1 9 , the other end of R1 9 is connected to the b terminal of the transistor Q7, the c terminal of Q 7 is connected to the 1 2 power supply, and the e terminal of Q7 is connected to the relay power. K1 control terminal, the other end of K1 control is grounded, K1 controlled end switch 1, one end is connected to 1 2 power supply, the other end is connected to solenoid valve Ll, the other end of L1 is grounded, K1 controlled end switch 2, one end is connected to the outer casing The other end is connected to the positive end of the battery B 1 , and the negative end of the B 1 is connected to the control end of the pulse ignition generator IC 15;

 When the 40 pin output of the MCU is at the 髙 level, there is no voltage difference between the 2nd pin and the 1st pin of the optocoupler IC1. The 5th pin of the optocoupler will output a low level to turn off the transistor Q7. The relay K1 turns off the solenoid valve L1. No current, the gas is turned off and the power of the ignition driving chip IC 1 5 is also disconnected;

 When the 40 pin of the MCU outputs a low level, the 2nd pin of the optocoupler IC 1 1 and the 1st pin are turned on, and the 5th pin of the optocoupler will transfer the high level to make the transistor Q7 turn on, and the relay K1 pulls the electromagnetic valve L 1 If a current flows through the closed gas, the ignition power of the IC 1 5 is also turned on to start the ignition;

 (2) Left fire: IC 1's 3 9-pin resistor R 2 6, R2 6 is connected to the 2nd pin of the optocoupler IC 1 2, IC1 3's 1st pin is connected to the 6 volt power supply, IC1 2 6 feet connected to 1 2 volt power supply, IC 1 2's 5th pin is connected to resistor R 2 3, R2 3 is connected to the other end of switch S 1 7 and the 2nd pin of IC 1 4 is connected to the second leg of IC 1 4, S 1 7 3 feet are grounded, and the 7th and 8th pins of IC 1 4 are respectively connected to the input end of the motor M 1 ;

 (3) Left side small fire: IC 1's 3 8 pin presses resistor R 27, R27's other end is connected to the 2nd pin of optocoupler IC 1 3, IC1 3's 1st pin is connected to 6 volt power supply, IC1 3's 6th When the pin is connected to the 12 volt power supply, the fifth pin of IC 1 3 is connected to the resistor R2 3, the other end of R24 is connected to the first leg of the switch S1 3 , and the second leg of the S1 8 is connected to the third pin of the IC 14 , S1 8 The third leg is grounded;

When the 3rd pin of the microcontroller IC 1 outputs a high level, the 2nd pin and the 1st pin of the optocoupler IC 1 3 have no voltage. Poor, the fifth pin of the optocoupler will output the low level to the third step of the motor drive chip IC1 4, when the motor has no action;

 When the 3rd pin of the single-chip IC 1 outputs a low level, the 2nd pin of the optocoupler IC 1 3 and the 1st pin are turned on, and the 5th pin of the optocoupler will output a high level after the current limiting resistor R24 and the switch S1 8 Send the third leg of the motor drive chip IC1 4, when the motor rotates to the maximum, the switch S 18 will be disconnected, the third pin of IC 1 4 will be low, and the motor will stop;

 ( ) The right output control section is the same as the connection of the left output control section.

 1 0. The smart gas stove according to claim 2, wherein the single chip IC 1 is used as a core part external circuit, and the display part is: the display part: by the microprocessor IC1, the transformer Tl, the VFD connection seat J2 , the resistor R1 0 5 is composed;

 The 4, 5, 6, 7, and 8 pins of IC 1 are connected to the 8, 9, 10, 1 1 and 1 2 legs of J 2 respectively, and the 1st pin of J 2 is connected to the ground of the power supply, and the 2nd of J 2 The 3 feet are respectively connected to the output of the transformer T 1 , the 4th pin of J 2 is connected to the 6 volt positive power supply, the 5th pin of J 2 is connected to the positive power supply of 40 volts, and the 6th pin of J 2 is connected to the resistor R 1 0 5 , The other end of R1 0 5 is connected to the 40 volt power supply, the input end of the transformer T1 is connected to the 2 2 0 AC mains, and the middle tap of the T 1 output is connected to the power ground;

 The MCU uses the 4, 5, 6, 7, and 8 pin serial input/output small data and control signals to the VFD drive interface J 2 to control the content and indication of the VFD display.

 1 . The smart gas stove according to claim 2, wherein the single-chip microcomputer IC1 is used as a core controller external part circuit, wherein: the infrared non-pot detection part: by the integrated receiver IC 4, the non-gate IC3 , resistor R1 0 6 , R1 0 7 , R1 1 0, capacitor C 1 0 1 , C 1 0 2, diode D 1, infrared light-emitting tube PD1;

 The first pin of IC 4 is connected to the 6 volt positive power supply. The third pin of IC 4 is connected to the power ground. The second pin of IC 4 is connected to the resistor R1 0 7 and the capacitor CI Q 1 respectively. The other end of R1 0 7 is 6 volts. The positive power supply is connected, the other end of C1 0 1 is connected to the diode Dl, and the other end of the D1 is respectively connected with the resistor R1 0 6 and the capacitor C1 0 2 , and the fourth leg of the non-gate IC 3 is connected to the 0th pin of the IC1; 1 4 feet connected to 6 volts positive power supply, IC 2's 2nd pin and IC 3's 7th pin are connected to the power ground; IC1's 2nd pin is connected to resistor Rl 1 0, Rl 1 0 and the other end is connected to the infrared light-emitting tube PDl, PD1 The other end is connected to the power ground;

The second pin of the single chip IC1 outputs a pulse of a certain frequency and is limited by the resistor Rl 1 0 to cause the infrared light emitting tube PD1 to emit a certain frequency of infrared output; when there is a pot, the red light is reflected by the pot body, and the integrated receiver IC 4 receiving, outputting the pulse signal from the second pin of IC 4 through diode D1, capacitor C 1 0 2 filtering, and Resistor Rl 0 6 After the discharge loop is sent to the non-gate to perform the integer output low level, then the IC 3 is inverted and the output is high. The second Q pin of the single chip IC1 is collected by the single chip IC 1 and processed accordingly. In the pot, the infrared light is not reflected, the integrated receiver IC 4 has no infrared light receiving, the second pin of IC 4 will output a fixed high level separated by the capacitor C1 0 1 , no current charges the capacitor C1 0 2 , the capacitor C1 0 2 After the resistor R1 0 6 discharge circuit, the input terminal of the non-gate is low level. The gate of the non-gate IC 3 outputs a high level and then outputs the low level after the inversion of the IC 3 via the 0 0 pin of the single chip IC1. The one-chip computer IC1 performs the collection and corresponding processing.

 2 . The smart gas stove according to claim 2 , wherein the single-chip microcomputer IC1 is used as a core controller external part circuit, wherein: the infrared emitting part to be extended is: by a resistor R1 0 9 , R1 0 4 , a triode 2 2, the infrared light emitting tube PD 2 is composed;

 The first pin of IC1 is connected to the resistor R1 0 9 , R1 0 9 and the other end is connected to the b terminal of the transistor Q2, the e terminal of Q2 is grounded, the c terminal of Q2 is connected to the infrared light emitting diode PD2, and the other end of the PD 2 is connected to the resistor R1 0 4, The other end of R1 0 4 is connected to the 6 volt positive power supply - the output of the pin 1 of the microcontroller IC1 is modulated by the software. The pulse output of the different frequency is limited by the resistor R1 0 9 to make the transistor Q 2 intermittently conduct, and the infrared LED PD 2 will be issued. Infrared light output at the same frequency as pin 1 of IC 1 to control the operation of other devices.

 The intelligent gas stove according to claim 2, wherein the single-chip microcomputer IC1 is used as a core controller external part circuit, wherein: the serial interface part is: by RS 2 3 2 converter IC2, DB9 core interface J 1, capacitor C1 0 3, C1 0 4, C1 0 5, C1 0 6 composition;

 The first 4th and the 1st legs of the IC 1 are respectively connected to the 1st, 1st pins of the level shifter IC 2, and the 1st pin of the IC 2 is connected to the other end of the capacitor C1 0 4, C1 0 4 to the IC 2 Pin 3, IC4's 4th pin is connected to capacitor C 1 0 3, C1 0 3 is connected to the 5th pin of IC 2, IC 2's 2nd pin is connected to capacitor C 1 0 5, C 1 0 5 at the other end Connect 6 volt positive power supply, IC6's 6th pin is connected to capacitor C1 0 6 , C1 0 6 is connected to the power supply ground, IC2's 16th pin is connected to 6 volt positive power supply, IC2's 1st pin is connected to power ground, IC The 1st, 2nd, and 9th pins of 2 are connected to the 2nd and 3rd legs of the DB 9-pin connector J 1 respectively, and the 7th and 5th pins of J 1 are connected to the power ground.

 The intelligent gas stove according to claim 2, wherein the single-chip microcomputer IC 1 is used as a core controller external part circuit, wherein: the power supply part: 2 2 0 volt alternating current is filtered by a step-down rectification filter, and the output is Positive 6 volt power supply, positive 1 2 power supply, positive 40 volt power supply and ground terminal, positive 6 volt power supply with IC1's 1st and 30th pins, IC 2's 1 pin, IC 4's 1 pin, IC 1 6 Pin 1 of the IC, pin 8 of IC 5, and pin 8 of IC 6 are connected.