CN208573431U - A kind of application circuit of intelligent electric cooker - Google Patents

Abstract

The utility model relates to a kind of application circuits of intelligent electric cooker, it is characterized by comprising have main control unit, the power supply unit of power supply is provided for entire circuit, the unit being electrically connected with main control unit, LCD liquid crystal display, LED light display unit, backlight driving unit, touch key-press detection unit, NTC temperature feedback unit, relay drive unit, buzzer driving unit, wherein, MCU detects temperature by the thermistor (NTC) for the negative temperature coefficient being affixed on PTC heater central point in governor circuit, control the conducting and shutdown of triode Q1 and Q2 afterwards compared with temperature is set, whether heating to control PTC1 and PTC2.The beneficial effects of the utility model are: application circuit has out short circuit and dry-burning warning function.

Description

A kind of application circuit of intelligent electric cooker

Technical field

The utility model relates to a kind of application circuits of intelligent electric cooker.

Background technique

Currently, major part in the market is heated by the way of mechanically either using constant power, energy utilization rate It is low, it has a single function, it is difficult to meet the growing life requirement of people.Intelligence electricity meal of the electric cooker from mechanical principle till now It stews, during which experienced many stages.Electric cooker play new and high technology advantage, be with delicious cooking it is leading, keep product richer Rich and fashion-orientation has formed micro computer, computer and mechanical three categories type, ten different styles.Although mechanical electric cooker price Aspect embodies except its advantage, other aspects are difficult to meet the needs of people are to modern life high-quality.Micro computer or electricity The intelligent electric cooker of brain control meets the requirement of modern, humanized interface, so that people find out work at present at a glance State allows you more to feel at ease, and various gastronomical process are all automatically controlled by computer, these features meet modern it is time saving, laborsaving, Durable idea.

Summary of the invention

In view of the above-mentioned problems, the utility model, including following technical scheme:

A kind of mini electric cooker N6N7 application circuit of intelligence, which includes main control unit, provides electricity for entire circuit The power supply unit in source, the liquid crystal display being electrically connected with main control unit, LED light display unit, backlight driving unit, touching Touch key detection unit, NTC temperature feedback unit, PTC heater relay drive unit, buzzer driving unit.Such electricity The electric cooker of compatible two different capacity in road, can select corresponding model according to wire jumper.User is in use, can be by pressing Required function is arranged in key.The mini electric cooker application circuit of intelligence has out short circuit and dry-burning warning function.

The main control unit connects each unit by a master control IC, is the core of entire application circuit, for controlling The work of entire application circuit, the MCU of governor circuit have the convenient sampling to various analog quantitys and the power to each load AD, PWM resource of control, resistance R20 connect structure bleeder circuit with NTC, for the change in resistance of NTC to be converted into voltage change To facilitate sampling, capacitor C11 can inhibit AD sample port voltage transient to change, for reducing the sampling error of analog quantity.

The power supply unit includes 12V and 5V direct current supply, and the unit is by AC-DC power management IC and peripheral circuit It is formed with voltage-stabiliser tube reduction voltage circuit, AC-DC power management IC and peripheral circuit are by safety capacitor CX1, varistor MOV1, insurance Pipe F1, rectifier diode D1, D2, D3, electrolytic capacitor EC1, EC2, EC3, EC4, resistance R4, R6, R7, R8, R9, R10, R11, electricity Hold C6, inductance L1, L2, copper plug male connector ACN, ACL, power management chip LP2707A composition；Voltage-stabiliser tube reduction voltage circuit is by resistance R1, voltage-stabiliser tube 7805, capacitor C2, electrolytic capacitor EC5 composition.

The unit includes resistance R16, R17, R18, R19, capacitor C12, driving chip CS1621D.

LCD liquid crystal display is the liquid crystal display that a display scale is 4*13.

It is characterized by: LED light display unit includes resistance R13, and blue plug-in unit lamp LED1, LED2, LED3, red Lan Shuan Colored lights L3, backlight driving unit include resistance R11, R12, backlight BL1, triode Q1.

Touch key-press detection unit includes resistance R2, R5, R6, R7, capacitor C1, C2, C3, C4, C8, C9, spring button K1, K2, K3, K4 touch chip YS1306.

NTC temperature feedback unit includes resistance R14, R20, capacitor C11, stand J5.

Relay drive unit includes resistance R2, R3, RJ0, triode Q1, Q2, diode D4, D5, relay RY1, RY2, copper plug male connector HEATER1, HEATER2.

Buzzer driving unit includes resistance R5, buzzer BUZZER.

The beneficial effects of the utility model are: application circuit has out short circuit and dry-burning warning function.

Detailed description of the invention

Fig. 1 is the board structure of circuit schematic diagrames in the utility model specific embodiment；

Fig. 2 is the display panel structure schematic diagram in the utility model specific embodiment.

Specific embodiment

The embodiment of the present invention is described in detail below in conjunction with attached drawing, but the utility model can be by claim It limits and the multitude of different ways of covering is implemented.

Shown in refering to fig. 1, the mini electric cooker N6N7 application circuit of intelligence includes power circuit power supply module Fig. 1 unit 1；PTC heater relay driving module Fig. 1 unit 2；Buzzer warning control module Fig. 1 unit 3；Temperature detecting module Fig. 2 Unit 3；2 unit 4 of governor circuit module map；Touch key-press detection module Fig. 2 unit 5；LED light display module Fig. 2 unit 6；Back Light lamp drive module Fig. 2 unit 8；And LCD MODULE Fig. 2 unit 9 and unit 10.

In the utility model, due to the limitation of complete machine structure characteristic, circuit board is divided into power panel (Fig. 1) and display board (figure 2) it is separately mounted to different positions, power panel and display board are electrically connected by soft arranging wire.Power circuit power supply module (Fig. 1 unit 1), PTC heater relay driving module (Fig. 1 unit 2), buzzer warning control module (Fig. 1 unit 3) are integrated On power panel, each component parameter of power panel is as shown in Figure 1；One-chip machine simulation module (Fig. 2 unit 2), temperature detecting module (Fig. 2 unit 3), governor circuit module (Fig. 2 unit 4), touch key-press detection module (Fig. 2 unit 5), LED light display module (figure 2 units 6), backlight driver module (Fig. 2 unit 8) and LCD MODULE (Fig. 2 unit 9,10) it is integrated on the display panel, with Each module is illustrated by specific embodiment down.

Power circuit power supply module Fig. 1 unit 1 includes that the power supply unit includes 12V and 5V direct current supply.The list Member is made of AC-DC power management IC and peripheral circuit and voltage-stabiliser tube reduction voltage circuit.AC-DC power management IC and peripheral circuit by External power interface ACN1 and ACL1, safety capacitor CX1, varistor MOV1, protective tube F1, rectifier diode D1, D2, D3, Electrolytic capacitor EC1, EC2, EC3, EC4, resistance R4, R6, R7, R8, R9, R10, R11, capacitor C6, inductance L1, L2, copper plug are public Head ACN, ACL, power management chip LP2707A composition；Voltage-stabiliser tube reduction voltage circuit is by resistance R1, voltage-stabiliser tube 7805, capacitor C2, electricity Solve capacitor EC5 composition.

PTC heater relay driving module Fig. 1 unit 2 includes resistance R2, R3, RJ0, triode Q1, Q2, diode D4, D5, relay RY1, RY2, copper plug male connector HEATER1, HEATER2.Resistance R2 is connected to the base stage of triode Q1, resistance R2 The emitter of another RY2 for being connected to the sub- J2 of 5 foots, triode Q1 is grounded, and the collector of triode Q1 is connected to diode D5, and two Another termination DC12V of pole pipe D5, diode D5 is in parallel with the coil voltage end of relay RY2, the switch terminals difference of relay RY2 Connect copper plug ACL and HEATER2；Resistance R3 is connected to the base stage of triode Q2, and resistance R3 is another to be connected to the sub- J2's of 5 foots The emitter of RY1, triode Q2 are grounded, and the collector of triode Q2 is connected to diode D4, another termination DC12V of diode D4, Diode D4 is in parallel with the coil voltage end of relay RY1, the switch terminals of relay RY1 be separately connected copper plug ACL and HEATER1。

Buzzer warning control module Fig. 1 unit 3 includes resistance R5, buzzer BUZZER.Wherein the one end R5 is grounded, separately One connects and terminates to buzzer BUZZER；Another buzzer control for being connected to main control chip SN8F570320 of buzzer BUZZER is drawn Foot；

Temperature detecting module Fig. 2 unit 3 includes the terminal of the sub- J5(NTC of 2 foots), mono- termination power of J5 is another to terminate to The temperature detection foot of another termination main control chip SN8F570320 of resistance R14, resistance R14.

2 unit 4 of governor circuit module map includes main control chip U4, filter capacitor C10.Wherein main control chip U4 is taiwanensis The 20th foot of the MCU of vast single-chip microcontroller Co., Ltd, model SN8F570320, U4 meets power supply VCC, and the 1st foot is grounded, and the 1st and the 20th Shunt-wound capacitance C10 between foot, the 2nd, 5 feet be respectively connected to RY2, RY1 of the sub- J6 of 5 foots, the 3rd foot is connected to the BU of the sub- J6 of 5 foots, the 4th, 6,7,8 feet are 13,14,15,16 feet that key is respectively connected to U2, and the 9th, 10,11,12,13 draw for LED light display module interface Foot, the 15th, 16,17 are connected with the 12nd, 11, the 10 of LCD drive chip U5 respectively, the 14th foot be backlight control pin, the 18th Foot is emulation and wire jumper pin, the 19th foot temperature detection pin.

Touch key-press detection module Fig. 2 unit 5 includes resistance R2, R5, R6, R7, capacitor C1, C2, C3, C4, C8, C9, Spring button K1, K2, K3, K4 touch chip YS1306.Wherein capacitor C8 be touch IC filter capacitor, capacitor C1, C2, C3, C4, C9 are adjustable keystroke sensitivities, and C9 is to adjust whole keystroke sensitivity, and capacitance is bigger, and sensitivity is higher, holds Value range is 6.8nF-33nF, and C1, C2, C3, C4 are the sensitivity for downgrading corresponding key, and capacitance is bigger, and sensitivity is lower, is held Value range is 0-5PF.

LED light display module Fig. 2 unit 6 includes resistance R13, blue plug-in unit lamp LED1, LED2, LED3, red Lan Shuanse Lamp L3.

Backlight driver module Fig. 2 unit 8 includes resistance R11, R12, backlight BL1, triode Q1.Backlight BL1 anode It is connected to power supply, cathode is connected to current-limiting resistance R12, another collector for being connected to triode Q1 of resistance R12, the transmitting of triode Q1 Pole ground connection, the base stage of triode Q1 are connected to resistance R11, another 14 feet for being connected to main control chip SN8F570320 of resistance R11.

The liquid driving chip that LCD MODULE Fig. 2 unit 9 and unit 10 use is the CS1621 of middle microelectronics, CS1621 4 COM feet be connected respectively with 4 COM feet of liquid crystal, each SEG foot of CS1621 is connected with each SEG foot of liquid crystal respectively, CS1621 receives the display data sent come main control module by the 10th, 11,12 feet.

The above is only the preferred embodiments of the utility model, are not intended to limit the utility model, for this field Technical staff for, various modifications and changes may be made to the present invention.Within the spirit and principle of the utility model, Any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.

Claims (10)

1. a kind of application circuit of intelligent electric cooker, it is characterised in that: include main control unit, provide power supply for entire circuit Power supply unit, the unit being electrically connected with main control unit, LCD liquid crystal display, LED light display unit, backlight Lamp driving unit, touch key-press detection unit, NTC temperature feedback unit, relay drive unit, buzzer driving unit, In, MCU detects temperature by the thermistor for the negative temperature coefficient being affixed on PTC heater central point in governor circuit, with Temperature is set and controls the conducting and shutdown of triode Q1 and Q2 more afterwards, thus control PTC heater one and PTC heater two plus Whether heat.

2. the application circuit of intelligent electric cooker as described in claim 1, it is characterised in that: the main control unit is by a master Control IC connects each unit, is the core of entire application circuit, for controlling the work of entire application circuit, governor circuit MCU has AD, PWM resource of the convenient sampling to analog quantity and the power control to each load, and resistance R20 connects structure with NTC Bleeder circuit, for the change in resistance of NTC to be converted into voltage change to facilitate sampling, capacitor C11 can inhibit AD sample port Voltage transient variation, for reducing the sampling error of analog quantity.

3. the application circuit of intelligent electric cooker as described in claim 1, it is characterised in that: the power supply unit includes 12V With 5V direct current supply, the unit is made of AC-DC power management IC and peripheral circuit and voltage-stabiliser tube reduction voltage circuit, AC-DC electricity Source control IC and peripheral circuit are by safety capacitor CX1, varistor MOV1, protective tube F1, rectifier diode D1, D2, D3, electrolysis Capacitor EC1, EC2, EC3, EC4, resistance R4, R6, R7, R8, R9, R10, R11, capacitor C6, inductance L1, L2, copper plug male connector ACN, ACL, power management chip LP2707A composition；Voltage-stabiliser tube reduction voltage circuit is by resistance R1, voltage-stabiliser tube 7805, capacitor C2, electrolysis Capacitor EC5 composition.

4. the application circuit of intelligent electric cooker as described in claim 1, it is characterised in that: the unit includes There are resistance R16, R17, R18, R19, capacitor C12, driving chip.

5. the application circuit of intelligent electric cooker as described in claim 1, it is characterised in that: LCD liquid crystal display is one Display scale is the liquid crystal display of 4*13.

6. the application circuit of intelligent electric cooker as described in claim 1, it is characterised in that: LED light display unit includes electricity R13, blue plug-in unit lamp LED1, LED2, LED3 are hindered, red indigo plant bi-colour light L3, backlight driving unit includes resistance R11, R12, Backlight BL1, triode Q1.

7. the application circuit of intelligent electric cooker as described in claim 1, it is characterised in that: touch key-press detection unit includes Resistance R2, R5, R6, R7, capacitor C1, C2, C3, C4, C8, C9, spring button K1, K2, K3, K4 touch chip.

8. the application circuit of intelligent electric cooker as described in claim 1, it is characterised in that: NTC temperature feedback unit includes Resistance R14, R20, capacitor C11, stand J5.

9. the application circuit of intelligent electric cooker as described in claim 1, it is characterised in that: relay drive unit includes electricity Hinder R2, R3, RJ0, triode Q1, Q2, diode D4, D5, relay RY1, RY2, multiple copper plug male connectors.

10. the application circuit of intelligent electric cooker as described in claim 1, it is characterised in that: buzzer driving unit includes Resistance R5 and buzzer.