CN102920357A - Working circuit of electronic oven - Google Patents
Working circuit of electronic oven Download PDFInfo
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- CN102920357A CN102920357A CN2012104891538A CN201210489153A CN102920357A CN 102920357 A CN102920357 A CN 102920357A CN 2012104891538 A CN2012104891538 A CN 2012104891538A CN 201210489153 A CN201210489153 A CN 201210489153A CN 102920357 A CN102920357 A CN 102920357A
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Abstract
The invention relates to a working circuit of an electronic oven. The working circuit comprises a main control circuit, a power circuit, a temperature detection circuit, a display output circuit, a control output circuit and a function selector circuit, and is characterized in that the working circuit also comprises an encoder circuit for implementing increase and decrease regulation of temperature and time; the encoder circuit comprises a rotation signal first output end and a rotation signal second output end; the main control circuit comprises an encoder signal first receiving end and an encoder signal second receiving end; the rotation signal first output end of the encoder circuit is connected with the encoder signal first receiving end; and the rotation signal second output end of the encoder circuit is connected with the encoder signal second receiving end. The working circuit of the electronic oven disclosed by the invention has the advantages that by adopting the encoder circuit alone to implement the increase and decrease control of temperature and time, operation parameters, such as oven temperature and time, can be set through continuous rotation of an encoder knob, which not only improves the operation efficiency, but also can realize stepless regulation, and the operation is more quick and convenient.
Description
Technical field
The present invention relates to the operating circuit of a kind of control circuit, particularly a kind of electric oven.
Background technology
Electric oven is the electric heating appliance that the radiant heat that utilizes heating to send comes baked goods, mainly is made of casing, heating, convection current motor, cooling motor etc.
Traditional electric oven generally all has temperature control, function control and three control modules of timing controlled, these three control module great majority are to adopt respectively the independent operation of mechanical switch and control, and, for the duty that shows that baking box is current, around console switch, also be printed on the mark of display operation unit work at present state, these marks adopt the design of panel silk-screen more, but the mark displaying contents of this panel silk-screen design is limited, can't realize interactive operation.
Be a kind of baking box circuit the Chinese invention patent " a kind of control circuit of oven " of ZL200910223137.2 discloses such as me in the patent No. of first to file, the selection of its function gear, the setting of time, being set as separately of temperature are selected, lack human-computer interaction, operation separately seems and very bothers, and by the revolving rheostat design temperature time, because rheostat can only be rotated in 0～270 degree angle, if firmly rotate to 270 when spending, be rotated further again and just be easy to damage this device, and affect the use of whole baking box.In addition, at present also there is the baking box circuit that the setting of selection, time and the temperature of function gear is combined, but, this Integration Mode is to realize by touch key-press, when adjusting whole temperature and time, seem a bit slow, and baking box can temperature raise after work a period of time, touch key-press on the operator presses face glass can be felt a bit to scald, and is unwell to children's operation.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of for above-mentioned prior art present situation can realize temperature and time quick adjustment and so that the operating circuit of the simple electric oven more convenient to operate of baking box.
The present invention solves the problems of the technologies described above the technical scheme that adopts: a kind of operating circuit of electric oven includes
Governor circuit has power input, function selection input, temperature sampling input, temperature control end, display output and control signal output;
Power circuit is connected to the power input of described governor circuit, is used for providing operating voltage to this governor circuit;
Temperature sensing circuit, operating temperature for detection of baking box, include input, output and FEEDBACK CONTROL end, wherein, the input of described temperature sensing circuit is connected with temperature sensor, the temperature sampling input of the output of this temperature sensing circuit and described governor circuit links to each other, and the FEEDBACK CONTROL end of this temperature sensing circuit and the temperature control end of described governor circuit link to each other;
Display output circuit is used for display pattern or Word message, and the display output of the input of this display circuit and described governor circuit links to each other, and the output of this display circuit is connected with the LCDs that can show described pattern or letter signal;
The control output circuit, the control signal output of its input and described governor circuit links to each other, and this control output circuit reaches under the operating temperature and the state of time of setting at baking box, controls this baking box and quits work;
Function selector circuit, this function selector circuit is for detection of the induced signal by touch key-press or mechanical switch input, and this induced signal is converted to the input signal that can process for described governor circuit, the output of described function selector circuit selects input to link to each other with the function of described governor circuit;
It is characterized in that: also include encoder circuit, be used for realizing the increase and decrease adjusting of temperature and time, wherein, described encoder circuit includes turn signal the first output and turn signal the second output, described governor circuit includes code device signal the first receiving terminal and code device signal the second receiving terminal, wherein, turn signal first output of described encoder circuit and code device signal first receiving terminal of described governor circuit link to each other, and turn signal second output of described encoder circuit and code device signal second receiving terminal of described governor circuit link to each other.
As preferably, described encoder circuit includes the first resistance, the second resistance, the first electric capacity, the second electric capacity and can connect the first plug receptacle of coder switch rotating shaft, wherein, the first terminals first via of described the first plug receptacle is one tunnel the 3rd terminals that take back this first plug receptacle behind described the first electric capacity, and another road links to each other as turn signal first output of described encoder circuit and code device signal first receiving terminal of described governor circuit; The first terminals the second tunnel of described the first plug receptacle are one tunnel the second terminals that take back this first plug receptacle behind described the second electric capacity, and another road links to each other as turn signal second output of described encoder circuit and code device signal second receiving terminal of described governor circuit; The first terminals Third Road ground connection of described the first plug receptacle; A road of the second terminals of described the first plug receptacle link to each other with positive source through described the first resistance, and another road is connected on turn signal first output of described encoder circuit; The 3rd terminals one tunnel of described the first plug receptacle link to each other with positive source through described the second resistance, and another road is through described the first capacity earth.
In order to improve safety in utilization, as further preferred, described control circuit of oven also includes sound out-put circuit, and described governor circuit also includes audio signal output terminal, described sound out-put circuit) input and the audio signal output terminal of described governor circuit link to each other.
In order to improve the sound effect of alarm element, as preferably, described sound out-put circuit includes NPN type the first triode, positive-negative-positive the second triode, NPN type the 3rd triode, positive-negative-positive the 4th triode, NPN type the 5th triode, positive-negative-positive the 6th triode, NPN type the 7th triode and alarm element, this sound out-put circuit also includes the first sound input end, the second sound input end, the 3rd sound input end and trigger control end, described governor circuit includes the triggering signal input, the first audio signal output terminal, second sound signal output and the 3rd audio signal output terminal;
Wherein, the base stage of described the first triode links to each other as the first audio signal output terminal of described the first sound input end and described governor circuit behind the 3rd resistance, the grounded emitter of this first triode, the colelctor electrode of this first triode links to each other through the base stage of the 4th resistance with described the second triode; The emitter stage of described the second triode connects positive source, and the colelctor electrode of this second triode links to each other with the first input end of described alarm element through the 5th resistance; The base stage of described the 3rd triode links to each other as the second sound signal output of described the second sound input end and described governor circuit behind the 6th resistance, the grounded emitter of the 3rd triode, the colelctor electrode of the 3rd triode links to each other through the base stage of the 7th resistance with described the 4th triode; The emitter stage of described the 4th triode connects positive source, and the colelctor electrode of the 4th triode connects the first input end of alarm element through the 8th resistance; The base stage of described the 5th triode links to each other as the 3rd audio signal output terminal of described the 3rd sound input end and described governor circuit behind the 9th resistance, the grounded emitter of the 5th triode, the colelctor electrode of the 5th triode links to each other through the base stage of the tenth resistance with described the 6th triode; The emitter stage of described the 6th triode connects positive source, and the colelctor electrode of the 6th triode links to each other through the first input end of the 11 resistance and alarm element; The second input of described alarm element links to each other with the colelctor electrode of described the 7th triode, the grounded emitter of the 7th triode, and the base stage of the 7th triode links to each other through the triggering signal input of the 12 resistance and described governor circuit.
In order to prevent that the operational order of the rear baking box of outage disappears suddenly, avoid restarting the trouble that resets instruction behind the power supply, improve the intellectuality of operation, as preferably, the operating circuit of described electric oven also includes circuit-breaking memory circuit, being used for storage selects input circuit to input to the operation information of described governor circuit by function, wherein, described circuit-breaking memory circuit has the input of triggering and Card read/write end, correspondingly, described governor circuit has the output of triggering and communication ends, the triggering input of described circuit-breaking memory circuit and the triggering output of described governor circuit link to each other, and the Card read/write end of described circuit-breaking memory circuit and the communication ends of described governor circuit link to each other.
Described circuit-breaking memory circuit can be various types of memory of the prior art, as preferably, simply, described circuit-breaking memory circuit includes the storage chip that a model is 24C02, described storage chip has eight pins, one tunnel ground connection after the first pin of this storage chip, the second pin, three-prong and the 4th pin connect altogether, another Lu Jingdi three electric capacity connect positive source; The 5th pin of this storage chip is described Card read/write end, and the 5th pin links to each other through the communication ends of the 14 resistance and described governor circuit; The 6th pin of this storage chip is described triggering input, and the 6th pin links to each other through the triggering output of the 13 resistance and described governor circuit; The 7th pin ground connection of described storage chip, the 8th pin of this storage chip connects described positive source.
Compared with prior art, the invention has the advantages that: adopt independent encoder circuit to realize the increase and decrease control of temperature and time, at user selection behind the different functional modes, can set the operating parameters such as oven temperature, time by the continuous rotation of encoder knob, not only improved operating efficiency, and can realize step-less adjustment, operate more efficient and convenient; Secondly, adopt the structure of three tunnel parallel connections, carry out alarm sound control by different gating modes, than the mode of original employing pure software control, sound effect is better.
Description of drawings
Fig. 1 is the circuit theory diagrams of the embodiment of the invention.
Fig. 2 is the line map of the governor circuit of the embodiment of the invention.
Fig. 3 is the line map of the encoder circuit of the embodiment of the invention.
Fig. 4 is the line map of the sound out-put circuit of the embodiment of the invention.
Fig. 5 is the line map of the circuit-breaking memory circuit of the embodiment of the invention.
The specific embodiment
Embodiment is described in further detail the present invention below in conjunction with accompanying drawing.
Such as Fig. 1～shown in Figure 5, the present embodiment discloses a kind of electric oven operating circuit, this baking box adopts electronic control mode, realizes step-less adjustment by encoder, so that the user is more quick and convenient and simple in the operating temperature of setting baking box and the operation of working time.
The baking box operating circuit of the present embodiment includes:
Governor circuit 1, have power input 11, function selection input 12, temperature sampling input 13, display output 15, control signal output 16, code device signal the first receiving terminal 171, code device signal the second receiving terminal 172, audio signal output terminal 18, trigger output 191 and communication ends 192, this governor circuit 1 is used for receiving and processing the information of each input, and this information is converted to through the pattern of display output 15 outputs or letter signal with through the control signal of control signal output 16 outputs;
Power circuit 2 is connected to the power input 11 of governor circuit 1, and being used for provides+direct-current working volts of 5V to this governor circuit 1;
Temperature sensing circuit 3, for detection of the operating temperature of baking box, include input 31 and output 32, wherein, the input 31 of temperature sensing circuit 3 is connected with temperature sensor, and the output 32 of this temperature sensing circuit 3 links to each other with the temperature sampling input 13 of governor circuit 1;
Display output circuit 4 is used for display pattern or Word message, and the display output 15 of the input of this display circuit 4 and governor circuit 1 links to each other, but the output of this display circuit 4 is connected with the LCDs of display pattern or letter signal;
Control output circuit 5, the control signal output 16 of its input 51 and governor circuit 1 links to each other, and reaches at baking box under the operating temperature and the state of time of setting, controls this baking box and quits work;
Function selector circuit 6, this function selector circuit 6 is for detection of the induced signal by touch key-press or mechanical switch input, and this induced signal is converted to the input signal that can process for governor circuit 1, the function of the output of function selector circuit 6 and governor circuit 1 selects input 12 to link to each other;
Encoder circuit 7, be used for realizing the increase and decrease adjusting of temperature and time, wherein, encoder circuit 7 includes turn signal the first output 71 and turn signal the second output 72, governor circuit 1 includes code device signal the first receiving terminal 171 and code device signal the second receiving terminal 172, and, turn signal first output 71 of encoder circuit 7 and code device signal first receiving terminal 171 of governor circuit 1 link to each other, and turn signal second output 72 of encoder circuit 7 and code device signal second receiving terminal 172 of governor circuit 1 link to each other;
Sound out-put circuit 8, this sound out-put circuit 8 has trigger control end, first sound tone signal input, second sound signal input and the 3rd voice signal input, correspondingly, governor circuit 1 has can be respectively and the corresponding triggering signal input that links to each other of trigger control end, first sound tone signal input, second sound signal input and the 3rd voice signal input, the first audio signal output terminal, second sound signal output and the 3rd audio signal output terminal, and alarm element is serially connected in the sound out-put circuit;
Circuit-breaking memory circuit 9, be used for storage is inputed to governor circuit 1 by function selector circuit 6 and encoder circuit 7 operation information (such as the work gear pattern of baking box, heat time heating time and corresponding desired temperature etc.), this circuit-breaking memory circuit 9 has the input 91 of triggering and Card read/write end 92, the triggering input 91 of circuit-breaking memory circuit 9 links to each other with the triggering output 191 of governor circuit 1, and the Card read/write end 92 of circuit-breaking memory circuit 9 links to each other with the communication ends 192 of governor circuit 1.
In above-mentioned each functional circuit, wherein, power circuit 2, temperature sensing circuit 3, display output circuit 4, control output circuit 5 and function selector circuit 6 all are prior aries, can adopt various circuit connection structure of the prior art to realize, are not described further at this.
It is the integrated chip IC1 of MB95470H that the governor circuit 1 of the present embodiment adopts the model of Fujitsu, and this integrated chip IC1 has 64 pins, wherein, the 1st pin of integrated chip IC1 be power input 11(integrated chip IC1 operating voltage for+5V); The 7th～12 pin of this integrated chip IC1 and the 15th pin are that function is selected input 12; 3 pin of integrated chip IC1 are temperature sampling input 13; 25～28 pin of integrated chip IC1 and 49～63 pin are display output 15; 17～21 pin of integrated chip IC1 and 29 pin be can control relay the control signal output 16 of action; 6 pin of integrated chip IC1 are code device signal the first receiving terminal 171, and 5 pin of integrated chip IC1 are code device signal the second receiving terminal 172; 30～32 pin of integrated chip are audio signal output terminal 18, when baking box breaks down, the corresponding input of can being connected with sound out-put circuit connects, being used for the control alarm element sounds the alarm, 13 pin (T001) of integrated chip IC1 are trigger control end, be used for the break-make of control alarm element (buzzer), this trigger control end is in conducting state always when integrated chip IC1 works, and closes after integrated chip IC1 outage; 38 pin of integrated chip IC1 are for triggering output 191, and 37 pins of integrated chip IC1 are communication ends 192.
The encoder circuit 7 of the present embodiment includes the first resistance R 1, the second resistance R 2, the first capacitor C 1, the second capacitor C 2 and can connect the first plug receptacle CON1 of coder switch rotating shaft, wherein, the first terminals first via of the first plug receptacle CON1 is one tunnel the 3rd terminals that take back this first plug receptacle CON1 after the first capacitor C 1, and another road is as the turn signal first output 71(T3 of encoder circuit 7) with 6 pin of the code device signal first receiving terminal 171(integrated chip IC1 of governor circuit 1) link to each other; The first terminals the second tunnel of the first plug receptacle CON1 are one tunnel the second terminals that take back this first plug receptacle CON1 after described the second capacitor C 2, and another road is as the turn signal second output 72(T4 of encoder circuit 7) with 5 pin of the code device signal second receiving terminal 172(integrated chip IC1 of governor circuit 1) link to each other; The first terminals Third Road ground connection of the first plug receptacle CON1; A road of the second terminals of the first plug receptacle CON1 link to each other with positive source through the first resistance R 1, and another road is connected on turn signal first output 71 of encoder circuit 7; The 3rd terminals one tunnel of the first plug receptacle CON1 link to each other with positive source through the second resistance R 2, another road the first capacitor C 1 ground connection.
The encoder circuit 7 of the present embodiment can be realized the continuous stepless adjusting of temperature and time, the encoder of the present embodiment adopts the cross encoder, as user during at turn encoder knob, can be at the turn signal first output 71(T3 of this encoder circuit 7) and turn signal the second output 72(T4) square wave that circulates produced respectively, when encoder clockwise rotates, turn signal the first output 71(T3) the output square wave is 01100110 ..., turn signal the second output 72(T4) output square wave be 00110011 When encoder rotates counterclockwise, turn signal the first output 71(T3) the output square wave is 00110011 ..., turn signal the second output 72(T4) output square wave be 01100110 Integrated chip IC1 makes up to judge according to the square wave model from the 6th pin and the input of the 5th pin two ends whether the user has the rotation direction at rotary encoder and this encoder, thereby determine that temperature or the time regulated are to increase or reduce, the cross encoder of the present embodiment can be realized continuous rotation, and then realizes the plus-minus step-less adjustment to temperature or time.
The sound out-put circuit 8 of the present embodiment includes NPN type the first triode Q1, positive-negative-positive the second triode Q2, NPN type the 3rd triode Q3, positive-negative-positive the 4th triode Q4, NPN type the 5th triode Q5, positive-negative-positive the 6th triode Q6, NPN type the 7th triode Q7 and alarm element BUZZ(buzzer), this sound out-put circuit 8 also includes first sound tone signal input PA5, second sound signal input PA6, the 3rd voice signal input PA7 and trigger control end T001,18 pairs of the audio signal output terminals of governor circuit 1 should have first sound tone signal output (30 pin of integrated chip IC1), second sound signal output (31 pin of integrated chip IC1) and the 3rd audio signal output terminal (32 pin of integrated chip IC1), this governor circuit 1 also have the triggering signal input (13 pin of integrated chip IC1) that can be connected with the trigger control end T001 of sound out-put circuit 8;
Wherein, the base stage of the first triode Q1 links to each other as 30 pin of first sound tone signal input PA5 and integrated chip IC1 after the 3rd resistance R 3, the grounded emitter of the first triode Q1, the colelctor electrode of the first triode Q1 links to each other through the base stage of the 4th resistance R 4 and the second triode Q2; The emitter stage of the second triode Q2 connects positive source, and the colelctor electrode of the second triode Q2 links to each other with the first input end of alarm element BUZZ through the 5th resistance R 5; The base stage of the 3rd triode Q3 links to each other as 31 pin of second sound signal input PA6 and integrated chip IC1 after the 6th resistance R 6, the grounded emitter of the 3rd triode Q3, the colelctor electrode of the 3rd triode Q3 links to each other through the base stage of the 7th resistance R 7 and the 4th triode Q4; The emitter stage of the 4th triode Q4 connects positive source, and the colelctor electrode of the 4th triode Q4 connects the first input end of alarm element BUZZ through the 8th resistance R 8; The base stage of the 5th triode Q5 links to each other as 32 pin of the 3rd voice signal input PA7 and integrated chip IC1 after the 9th resistance R 9, the grounded emitter of the 5th triode Q5, the colelctor electrode of the 5th triode Q5 links to each other through the base stage of the tenth resistance R 10 and the 6th triode Q6; The emitter stage of the 6th triode Q6 connects positive source, and the colelctor electrode of the 6th triode Q6 links to each other through the first input end of the 11 resistance R 11 and alarm element BUZZ; The second input of alarm element BUZZ links to each other with the colelctor electrode of the 7th triode Q7, the grounded emitter of the 7th triode Q7, and the base stage of the 7th triode Q7 links to each other through 13 pin of the 12 resistance R 12 and integrated chip IC1.The sound out-put circuit 8 of the present embodiment is mainly realized control by hardware, and is different by the gating of first three road parallel circuit of alarm element BUZZ, can produce three kinds of different sound effects, and its effect is effective more a lot of than the sound effect of pure software debugging.
The operating circuit of the present embodiment electric oven also includes circuit-breaking memory circuit 9, the storage chip IC2 of this circuit-breaking memory circuit 9 take a model as 24C02 is core, this storage chip IC2 has eight pins, one tunnel ground connection after the first pin A0 of storage chip IC2, the second pin A1, three-prong A2 and the 4th pin GND connect altogether, another Lu Jingdi three capacitor C 3 connect positive source; Card read/write end 92, the five pin SDA that the 5th pin SDL of this storage chip IC2 is circuit-breaking memory circuit 9 link to each other through 37 pin (communication ends 192) of the 14 resistance R 14 and integrated chip IC1; The 6th pin SCL of this storage chip IC2 is triggering input 91, the six pin SCL of circuit-breaking memory circuit 9 and links to each other through 38 pin (triggering output 191) of the 13 resistance R 13 and integrated chip IC1; The 7th pin WP ground connection of storage chip IC2, the 8th pin Vcc of storage chip IC2 connects positive source.
After unexpected outage is restarted baking box again, integrated chip IC1 can send triggering signal to the triggering input 91 of storage chip IC2 again through 38 pin (triggering output 191), then, the functional parameter (such as heat time heating time, pattern, heating-up temperature etc.) that arranges before integrated chip IC1 can read from the Card read/write end 92 of storage chip IC2 continues to carry out food process according to the pattern that arranges before.
The baking box operating circuit of the present embodiment has been set up encoder circuit 7 in traditional control circuit, so that behind selected functional mode, the user is as long as can realize the setting of temperature and time by a continuous rotation of encoder knob, so that the increase and decrease of temperature and time operation is more convenient; Simultaneously, the baking box operating circuit of the present embodiment has improved original sound out-put circuit 8, mainly realizes voice output with hardware controls, has improved widely the sound effect effect of alarm element; In addition, circuit-breaking memory circuit 9 can be remembered the work gear pattern of baking box and corresponding temperature, time setting value etc., if run in the situation of outage, re-power rear baking box and still can carry out work by original setting, do not need manually to reset, so that baking box work is more intelligent.
Claims (6)
1. the operating circuit of an electric oven includes
Governor circuit (1) has power input (11), function selection input (12), temperature sampling input (13), display output (15) and control signal output (16);
Power circuit (2) is connected to the power input (11) of described governor circuit (1), is used for providing operating voltage to this governor circuit (1);
Temperature sensing circuit (3), operating temperature for detection of baking box, include input (31) and output (32), wherein, the input (31) of described temperature sensing circuit (3) is connected with temperature sensor, and the output (32) of this temperature sensing circuit (3) links to each other with the temperature sampling input (13) of described governor circuit (1);
Display output circuit (4), be used for display pattern or Word message, the display output (15) of the input of this display circuit (4) and described governor circuit (1) links to each other, and the output of this display circuit (4) is connected with the LCDs that can show described pattern or letter signal;
Control output circuit (5), the control signal output (16) of its input (51) and described governor circuit (1) links to each other, this control output circuit (5) reaches under the operating temperature and the state of time of setting at baking box, controls this baking box and quits work;
Function selector circuit (6), this function selector circuit (3) is for detection of the induced signal by touch key-press or mechanical switch input, and this induced signal is converted to the input signal that can process for described governor circuit (1), the function of the output of described function selector circuit (3) and described governor circuit (1) selects input (12) to link to each other;
It is characterized in that: also include encoder circuit (7), be used for realizing the increase and decrease adjusting of temperature and time, wherein, described encoder circuit (7) includes turn signal the first output (71) and turn signal the second output (72), described governor circuit (1) includes code device signal the first receiving terminal (171) and code device signal the second receiving terminal (172), wherein, turn signal first output (71) of described encoder circuit (7) links to each other with code device signal first receiving terminal (171) of described governor circuit (1), and turn signal second output (72) of described encoder circuit (7) links to each other with code device signal second receiving terminal (172) of described governor circuit (1).
2. the operating circuit of electric oven according to claim 1, it is characterized in that: described encoder circuit (7) includes the first resistance (R1), the second resistance (R2), the first electric capacity (C1), the second electric capacity (C2) and first plug receptacle (CON1) that can connect the coder switch rotating shaft, wherein, the first terminals first via of described the first plug receptacle (CON1) takes back the 3rd terminals of this first plug receptacle (CON1) through described the first electric capacity (C1) Hou Yilu, another road links to each other as turn signal first output (71) of described encoder circuit (7) and code device signal first receiving terminal (171) of described governor circuit (1); The first terminals the second tunnel of described the first plug receptacle (CON1) take back the second terminals of this first plug receptacle (CON1) through described the second electric capacity (C2) Hou Yilu, another road links to each other as turn signal second output (72) of described encoder circuit (7) and code device signal second receiving terminal (172) of described governor circuit (1); The first terminals Third Road ground connection of described the first plug receptacle (CON1); A road of the second terminals of described the first plug receptacle (CON1) link to each other with positive source through described the first resistance (R1), and another road is connected on turn signal first output (71) of described encoder circuit (7); The 3rd terminals one tunnel of described the first plug receptacle (CON1) link to each other with positive source through described the second resistance (R2), and another road is through described the first electric capacity (C1) ground connection.
3. the operating circuit of electric oven according to claim 1, it is characterized in that: described control circuit of oven also includes sound out-put circuit (8), described governor circuit (1) also includes audio signal output terminal (18), and the audio signal output terminal (18) of the input of described sound out-put circuit (8) and described governor circuit (1) links to each other.
4. the operating circuit of electric oven according to claim 3, it is characterized in that: described sound out-put circuit (8) includes NPN type the first triode (Q1), positive-negative-positive the second triode (Q2), NPN type the 3rd triode (Q3), positive-negative-positive the 4th triode (Q4), NPN type the 5th triode (Q5), positive-negative-positive the 6th triode (Q6), NPN type the 7th triode (Q7) and alarm element (BUZZ), this sound out-put circuit (8) also includes first sound tone signal input (PA5), second sound signal input (PA6), the 3rd voice signal input (PA7) and trigger control end (T001), the audio signal output terminal (18) of described governor circuit (1) is to there being first sound tone signal output, second sound signal output and the 3rd audio signal output terminal, this governor circuit (1) also have the triggering signal input that can be connected with the trigger control end (T001) of sound out-put circuit (8);
Wherein, the base stage of described the first triode (Q1) links to each other as first audio signal output terminal of described first sound tone signal input (PA5) with described governor circuit (1) behind the 3rd resistance (R3), the grounded emitter of this first triode (Q1), the colelctor electrode of this first triode (Q1) links to each other through the base stage of the 4th resistance (R4) with described the second triode (Q2); The emitter stage of described the second triode (Q2) connects positive source, and the colelctor electrode of this second triode (Q2) links to each other through the first input end of the 5th resistance (R5) with described alarm element (BUZZ); The base stage of described the 3rd triode (Q3) links to each other as the second sound signal output of described second sound signal input (PA6) with described governor circuit (1) behind the 6th resistance (R6), the grounded emitter of the 3rd triode (Q3), the colelctor electrode of the 3rd triode (Q3) links to each other through the base stage of the 7th resistance (R7) with described the 4th triode (Q4); The emitter stage of described the 4th triode (Q4) connects positive source, and the colelctor electrode of the 4th triode (Q4) connects the first input end of alarm element (BUZZ) through the 8th resistance (R8); The base stage of described the 5th triode (Q5) links to each other as the 3rd audio signal output terminal of described the 3rd voice signal input (PA7) and described governor circuit (1) behind the 9th resistance (R9), the grounded emitter of the 5th triode (Q5), the colelctor electrode of the 5th triode (Q5) links to each other through the base stage of the tenth resistance (R10) with described the 6th triode (Q6); The emitter stage of described the 6th triode (Q6) connects positive source, and the colelctor electrode of the 6th triode (Q6) links to each other through the first input end of the 11 resistance (R11) with alarm element (BUZZ); The second input of described alarm element (BUZZ) links to each other with the colelctor electrode of described the 7th triode (Q7), the grounded emitter of the 7th triode (Q7), the base stage of the 7th triode (Q7) links to each other through the triggering signal input of the 12 resistance (R12) with described governor circuit (1).
5. the operating circuit of electric oven according to claim 1, it is characterized in that: the operating circuit of described electric oven also includes circuit-breaking memory circuit (9), being used for storage selects input circuit (6) to input to the operation information of described governor circuit (1) by function, wherein, described circuit-breaking memory circuit (9) has triggering input (91) and Card read/write end (92), correspondingly, described governor circuit (1) has triggering output (191) and communication ends (192), the triggering input (91) of described circuit-breaking memory circuit (9) links to each other with the triggering output (191) of described governor circuit (1), and the Card read/write end (92) of described circuit-breaking memory circuit (9) and the communication ends (192) of described governor circuit (1) link to each other.
6. the operating circuit of electric oven according to claim 5, it is characterized in that: described circuit-breaking memory circuit (9) includes the storage chip that a model is 24C02 (IC2), described storage chip (IC2) has eight pins, one tunnel ground connection after first pin (A0) of this storage chip (IC2), the second pin (A1), three-prong (A2) and the 4th pin (GND) connect altogether, another Lu Jingdi three electric capacity (C3) connect positive source; The 5th pin (SDL) of this storage chip (IC2) is described Card read/write end (92), and the 5th pin (SDL) links to each other through the communication ends (192) of the 14 resistance (R14) and described governor circuit (1); The 6th pin (SCL) of this storage chip (IC2) is described triggering input (91), and the 6th pin (SCL) links to each other through the triggering output (191) of the 13 resistance (R13) and described governor circuit (1); The 7th pin (WP) ground connection of described storage chip (IC2), the 8th pin (Vcc) of this storage chip (IC2) connects described positive source.
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| CN201210489153.8A CN102920357B (en) | 2012-11-27 | 2012-11-27 | Working circuit of electronic oven |
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| CN201210489153.8A CN102920357B (en) | 2012-11-27 | 2012-11-27 | Working circuit of electronic oven |
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| CN107019439A (en) * | 2017-06-01 | 2017-08-08 | 无锡天麦机械有限公司 | A kind of casing of the electric oven of novel intelligent acoustic control |
| CN108255077A (en) * | 2016-12-29 | 2018-07-06 | 佛山市顺德区美的电热电器制造有限公司 | A kind of control method and device |
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| CN102920357B (en) | 2014-08-20 |
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