CN104904861A - Household intelligent soybean milk machine based on single chip microcomputer - Google Patents

Household intelligent soybean milk machine based on single chip microcomputer Download PDF

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Publication number
CN104904861A
CN104904861A CN201510326722.0A CN201510326722A CN104904861A CN 104904861 A CN104904861 A CN 104904861A CN 201510326722 A CN201510326722 A CN 201510326722A CN 104904861 A CN104904861 A CN 104904861A
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CN
China
Prior art keywords
circuit
triode
chip microcomputer
electromagnetic relay
series
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CN201510326722.0A
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Chinese (zh)
Inventor
吴冬燕
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苏州工业职业技术学院
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Priority to CN201510326722.0A priority Critical patent/CN104904861A/en
Publication of CN104904861A publication Critical patent/CN104904861A/en

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Abstract

The invention discloses a household intelligent soybean milk machine based on a single chip microcomputer. A heating circuit is used for heating water in a soybean milk machine; a temperature detection circuit is used for detecting a water temperature; a grinding circuit is started after the appointed temperature is reached; a timer circuit begins to time; grinding is stopped when the timed time is up; a single chip microcomputer alarms through an alarm circuit, and is also connected with a water level detection circuit which is used for preventing overflowing and parching; the heating circuit comprises an electromagnetic relay K2, a triode Q3 and a heating resistor R9; the heating resistor R9 is connected with an electromagnetic switch circuit of the electromagnetic relay K2 in series; an emitter of the triode Q3 is connected with an electromagnetic coil of the electromagnetic relay K2 in series and then is electrically connected with an output end of a power supply module; a base of the triode Q3 is connected with a resistor R8 in series and then is connected with the single chip microcomputer; a collector of the triode Q3 is grounded; and two ends of the electromagnetic coil of the electromagnetic relay K2 are also connected with a diode D9 for protecting the triode Q3 in parallel. The household intelligent soybean milk machine is low in fault rate, and high in safety performance, and has the function of preventing parching and overflowing.

Description

SCM Based domestic intelligent soy bean milk making machine

Technical field

The present invention relates to a kind of SCM Based domestic intelligent soy bean milk making machine.

Background technology

Well-known soya-bean milk is a kind of health drink.People are to the attention of health, and a lot of people is at selection self-control soya-bean milk.Single-chip microcomputer is particularly suitable for and controls relevant system, is applied to the every field such as control and household electrical appliance automatically more and more widely.

Soy bean milk making machine much on sale does not in the market possess power-off protection function for heater circuit and defibrination circuit, and easily occur the situation of circuit burnout after a loss of power, fault rate is high; And many soy bean milk making machine do not possess anti-overflow, burning prevention function, even if there is control circuit also all too complicated, high cost.

Summary of the invention

The object of the invention is to overcome deficiency of the prior art, a kind of SCM Based domestic intelligent soy bean milk making machine is provided, possesses power-off protection, anti-overflow, burning prevention function.

For achieving the above object, the technical solution adopted in the present invention is: SCM Based domestic intelligent soy bean milk making machine, comprise single-chip microcomputer, heater circuit, defibrination circuit, warning circuit, temperature sensing circuit, timer circuit and power module, described power module is respectively single-chip microcomputer, warning circuit, temperature sensing circuit are powered; Heater circuit is to the water heating in soy bean milk making machine, and temperature sensing circuit detects water temperature, and after reaching assigned temperature, start defibrination circuit, timer circuit starts timing, and timing time arrives, and stops defibrination, and single-chip microcomputer is by warning circuit output alarm;

Described single-chip microcomputer is also connected with for water level detection circuit that is anti-overflow, anti-dry, when water level in soy bean milk making machine is on the low side or higher, single-chip microcomputer cuts out heater circuit and defibrination circuit, and by warning circuit output alarm;

Described heater circuit comprises electromagnetic relay K2, for the heating resistor R9 driving the triode Q3 of electromagnetic relay K2 and be connected in the electromagnetic switch loop of electromagnetic relay K2; Be electrically connected with the output of power module after the solenoid of the emitter stage series electrical magnetic relay K2 of triode Q3, be connected with single-chip microcomputer after the base series resistor R8 of triode Q3, the grounded collector of triode Q3; The solenoid two ends of electromagnetic relay K2 are also parallel with the diode D9 for the protection of triode Q3.

Described defibrination circuit comprises electromagnetic relay K1, for the defibrination motor M driving the triode Q2 of electromagnetic relay K1 and be connected in the electromagnetic switch loop of electromagnetic relay K1; Be electrically connected with the output of power module after the solenoid of the emitter stage series electrical magnetic relay K1 of triode Q2, be connected with single-chip microcomputer after the base series resistor R3 of triode Q3, the grounded collector of triode Q2; The solenoid two ends of electromagnetic relay K1 are also parallel with the diode D8 for the protection of triode Q2.

Described warning circuit comprises: alarm lamp D1, buzzer LS1 and for driving the triode Q1 of buzzer LS1, be electrically connected with the output of power module after the emitter stage series connection buzzer LS1 of triode Q1, the grounded collector of triode Q1, ground connection after the base series resistor R2 of triode Q1; Described alarm lamp D1 one end is connected with the output of power module, and the other end is connected with the corresponding port of single-chip microcomputer.

Described power module comprises transformer T1, rectifier and voltage-stablizer VR1, the former limit of transformer T1 is connected with 220V electric main, secondary is connected with the input of rectifier, the output of rectifier is held with the Vin of voltage-stablizer VR1 by change-over switch S2 and is connected, ground connection after the GND end series resistance R7 of voltage-stablizer VR1, Vin end is connected capacitor C6 between holding with GND, differential concatenation diode D3 between Vin end and Vout hold, Vout end is connected with the output of voltage source, differential concatenation diode D5 between Vout end and GND hold, diode D5 two ends parallel resistance R4, ground connection after resistance R4 series capacitance C7, Vout end also by the resistance R5 that is connected in series, indicator lamp D6 ground connection, the resistance R5 be connected in series, the two ends of indicator lamp D6 also shunt capacitance C5.

Described single-chip microcomputer is also connected with the display circuit for displaying time and warning message.

Compared with prior art, the present invention reaches beneficial effect:in heater circuit, the solenoid two ends of electromagnetic relay K2 are parallel with diode D9, in defibrination circuit, the solenoid two ends of electromagnetic relay K1 are parallel with diode D8, avoiding solenoid to burn the triode for driving at shutdown transient generation inverse electromotive force, reducing fault rate; Can complete from being heated to defibrination, then to heating boiled process and showing accordingly and warning function, and having anti-dry, spillage-proof function, security performance is higher.

Accompanying drawing explanation

Fig. 1 is schematic block circuit diagram of the present invention.

Fig. 2 is the circuit diagram of heater circuit in Fig. 1.

Fig. 3 is the circuit diagram of defibrination circuit in Fig. 1.

Fig. 4 is the circuit diagram of warning circuit in Fig. 1.

Fig. 5 is the circuit diagram of power module in Fig. 1.

Fig. 6 is the circuit diagram of display circuit in Fig. 1.

Fig. 7 is the annexation circuit diagram of single-chip microcomputer and time circuit.

Detailed description of the invention

Below in conjunction with accompanying drawing, the invention will be further described.Following examples only for technical scheme of the present invention is clearly described, and can not limit the scope of the invention with this.

As shown in Figure 1, SCM Based domestic intelligent soy bean milk making machine, comprises single-chip microcomputer, power module, heater circuit, defibrination circuit, warning circuit, temperature sensing circuit, the water level detection circuit water for anti-overflow, anti-dry, the timer circuit for defibrination timing and the display circuit for fault-signal display and timing time display.Power module is respectively single-chip microcomputer, warning circuit, temperature sensing circuit, display circuit are powered.

During use, beans is put into soy bean milk making machine, injects appropriate water, switch on power, heater circuit starts the water heating in soy bean milk making machine, temperature sensing circuit detects water temperature, after reaching assigned temperature, starts defibrination circuit, timer circuit starts timing, timing time arrives, and stops defibrination, and single-chip microcomputer is by warning circuit output alarm.For avoiding anti-dry or spilling, when water level detection circuit detects that in soy bean milk making machine, water level is on the low side or higher, single-chip microcomputer will cut out heater circuit and defibrination circuit, and by warning circuit output alarm.

As shown in Figure 7, be the annexation circuit diagram of single-chip microcomputer and time circuit, single-chip microcomputer adopts AT89S52, the clock circuit that timer circuit adopts single-chip microcomputer to carry, comprise crystal oscillator Y1, one end of crystal oscillator Y1 is by capacitor C3 ground connection, and the other end is by capacitor C4 ground connection.The RESET pin of single-chip microcomputer connects reset circuit.

As shown in Figure 2, heater circuit comprises electromagnetic relay K2, for the heating resistor R9 driving the triode Q3 of electromagnetic relay K2 and be connected in the electromagnetic switch loop of electromagnetic relay K2.Be electrically connected with the output of power module after the solenoid of the emitter stage series electrical magnetic relay K2 of triode Q3, be connected with single-chip microcomputer after the base series resistor R8 of triode Q3, the grounded collector of triode Q3.

When there is the situation of unexpected power-off, the solenoid of electromagnetic relay can produce larger electric current, and for avoiding burning triode Q3, the solenoid two ends of electromagnetic relay K2 are also parallel with diode D9.

As shown in Figure 3, defibrination circuit comprises electromagnetic relay K1, for the defibrination motor M driving the triode Q2 of electromagnetic relay K1 and be connected in the electromagnetic switch loop of electromagnetic relay K1.Be electrically connected with the output of power module after the solenoid of the emitter stage series electrical magnetic relay K1 of triode Q2, be connected with single-chip microcomputer after the base series resistor R3 of triode Q3, the grounded collector of triode Q2.The solenoid two ends of electromagnetic relay K1 are also parallel with the diode D8 for the protection of triode Q2.

As shown in Figure 4, warning circuit comprises: alarm lamp D1, buzzer LS1 and for driving the triode Q1 of buzzer LS1, be electrically connected with the output of power module after the emitter stage series connection buzzer LS1 of triode Q1, the grounded collector of triode Q1, ground connection after the base series resistor R2 of triode Q1.Alarm lamp D1 one end is connected with the output of power module, and the other end is connected with the corresponding port of single-chip microcomputer.

As shown in Figure 5, power module comprises transformer T1, rectifier and voltage-stablizer VR1, the former limit of transformer T1 is connected with 220V electric main, secondary is connected with the input of rectifier, the output of rectifier is held with the Vin of voltage-stablizer VR1 by change-over switch S2 and is connected, ground connection after the GND end series resistance R7 of voltage-stablizer VR1, Vin end is connected capacitor C6 between holding with GND, differential concatenation diode D3 between Vin end and Vout hold, Vout end is connected with the output of voltage source, differential concatenation diode D5 between Vout end and GND hold, diode D5 two ends parallel resistance R4, ground connection after resistance R4 series capacitance C7, Vout end also by the resistance R5 that is connected in series, indicator lamp D6 ground connection, the resistance R5 be connected in series, the two ends of indicator lamp D6 also shunt capacitance C5.

Voltage-stablizer VR1 adopts LM317 regulator block, and LM317 regulator block is with the variable voltage-stabilized power supply of a kind of output voltage, and the output voltage of voltage-stabilized power supply can calculate with following formula, Vo=1.25(1+R7/R4).Resistance R4 resistance is 200 Europe in the design, and R7 resistance is 680 Europe, and calculating Vo is that 5.5V can be whole circuit and powers, and for making the steady operation of circuit, connects as diode D3 and diode D5, and LM317 burns out by capacitor discharge when preventing power-off in circuit.

As shown in Figure 6, display circuit adopts LED12864.

As preferred version of the present invention, temperature sensing circuit adopts DS18B20 type temperature sensor chip.For reducing production cost, water level detection circuit can select a pair water level probe, be located at bottom and the top of soy bean milk making machine respectively, during normal work, the water level probe being positioned at bottom is not had by water logging, is connected with GND, output low level, the water level probe being positioned at top exposes, and is connected with power module, exports high level; Single-chip microcomputer changes according to the level signal of top water level probe and bottom water level probe, judges whether to be in dry combustion method or overflow status.

The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and distortion, these improve and distortion also should be considered as protection scope of the present invention.

Claims (5)

1. SCM Based domestic intelligent soy bean milk making machine, it is characterized in that, comprise single-chip microcomputer, heater circuit, defibrination circuit, warning circuit, temperature sensing circuit, timer circuit and power module, described power module is respectively single-chip microcomputer, warning circuit, temperature sensing circuit are powered; Heater circuit is to the water heating in soy bean milk making machine, and temperature sensing circuit detects water temperature, and after reaching assigned temperature, start defibrination circuit, timer circuit starts timing, and timing time arrives, and stops defibrination, and single-chip microcomputer is by warning circuit output alarm;
Described single-chip microcomputer is also connected with for water level detection circuit that is anti-overflow, anti-dry, when water level in soy bean milk making machine is on the low side or higher, single-chip microcomputer cuts out heater circuit and defibrination circuit, and by warning circuit output alarm;
Described heater circuit comprises electromagnetic relay K2, for the heating resistor R9 driving the triode Q3 of electromagnetic relay K2 and be connected in the electromagnetic switch loop of electromagnetic relay K2; Be electrically connected with the output of power module after the solenoid of the emitter stage series electrical magnetic relay K2 of triode Q3, be connected with single-chip microcomputer after the base series resistor R8 of triode Q3, the grounded collector of triode Q3; The solenoid two ends of electromagnetic relay K2 are also parallel with the diode D9 for the protection of triode Q3.
2. SCM Based domestic intelligent soy bean milk making machine according to claim 1, it is characterized in that, described defibrination circuit comprises electromagnetic relay K1, for the defibrination motor M driving the triode Q2 of electromagnetic relay K1 and be connected in the electromagnetic switch loop of electromagnetic relay K1; Be electrically connected with the output of power module after the solenoid of the emitter stage series electrical magnetic relay K1 of triode Q2, be connected with single-chip microcomputer after the base series resistor R3 of triode Q3, the grounded collector of triode Q2; The solenoid two ends of electromagnetic relay K1 are also parallel with the diode D8 for the protection of triode Q2.
3. SCM Based domestic intelligent soy bean milk making machine according to claim 1, it is characterized in that, described warning circuit comprises: alarm lamp D1, buzzer LS1 and for driving the triode Q1 of buzzer LS1, be electrically connected with the output of power module after the emitter stage series connection buzzer LS1 of triode Q1, the grounded collector of triode Q1, ground connection after the base series resistor R2 of triode Q1; Described alarm lamp D1 one end is connected with the output of power module, and the other end is connected with the corresponding port of single-chip microcomputer.
4. SCM Based domestic intelligent soy bean milk making machine according to claim 1, it is characterized in that, described power module comprises transformer T1, rectifier and voltage-stablizer VR1, the former limit of transformer T1 is connected with 220V electric main, secondary is connected with the input of rectifier, the output of rectifier is held with the Vin of voltage-stablizer VR1 by change-over switch S2 and is connected, ground connection after the GND end series resistance R7 of voltage-stablizer VR1, Vin end is connected capacitor C6 between holding with GND, differential concatenation diode D3 between Vin end and Vout hold, Vout end is connected with the output of voltage source, differential concatenation diode D5 between Vout end and GND hold, diode D5 two ends parallel resistance R4, ground connection after resistance R4 series capacitance C7, Vout end also by the resistance R5 that is connected in series, indicator lamp D6 ground connection, the resistance R5 be connected in series, the two ends of indicator lamp D6 also shunt capacitance C5.
5. SCM Based domestic intelligent soy bean milk making machine according to claim 1, is characterized in that, described single-chip microcomputer is also connected with the display circuit for displaying time and warning message.
CN201510326722.0A 2015-06-15 2015-06-15 Household intelligent soybean milk machine based on single chip microcomputer CN104904861A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105078253A (en) * 2015-09-21 2015-11-25 苏州工业职业技术学院 Soybean milk machine based on singlechip
CN107232992A (en) * 2017-08-12 2017-10-10 合肥全飞信息科技有限公司 A kind of Safety pan lid

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1306762A (en) * 2000-01-24 2001-08-08 王旭宁 Production process of delicious soy bean milk and automatic intelligent soy bean milk machine
CN101342054A (en) * 2008-08-05 2009-01-14 美的集团有限公司 Food processing device and processing method
CN101504553A (en) * 2009-01-14 2009-08-12 东莞市步步高家用电器有限公司 Automatic heat preserving control method and automatic heat preserving apparatus for intelligent soya-bean milk maker
CN201340532Y (en) * 2009-02-04 2009-11-04 金莱克电气股份有限公司 Control circuit of automobile soymilk maker
CN201477410U (en) * 2009-07-22 2010-05-19 励春亚 Soymilk maker control circuit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1306762A (en) * 2000-01-24 2001-08-08 王旭宁 Production process of delicious soy bean milk and automatic intelligent soy bean milk machine
CN101342054A (en) * 2008-08-05 2009-01-14 美的集团有限公司 Food processing device and processing method
CN101504553A (en) * 2009-01-14 2009-08-12 东莞市步步高家用电器有限公司 Automatic heat preserving control method and automatic heat preserving apparatus for intelligent soya-bean milk maker
CN201340532Y (en) * 2009-02-04 2009-11-04 金莱克电气股份有限公司 Control circuit of automobile soymilk maker
CN201477410U (en) * 2009-07-22 2010-05-19 励春亚 Soymilk maker control circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105078253A (en) * 2015-09-21 2015-11-25 苏州工业职业技术学院 Soybean milk machine based on singlechip
CN107232992A (en) * 2017-08-12 2017-10-10 合肥全飞信息科技有限公司 A kind of Safety pan lid

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Inventor after: Jiang Airu

Inventor after: Wu Dongyan

Inventor before: Wu Dongyan

RJ01 Rejection of invention patent application after publication
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Application publication date: 20150916