CN102349801A - Intelligent coffee maker circuit without standby power consumption - Google Patents
Intelligent coffee maker circuit without standby power consumption Download PDFInfo
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- CN102349801A CN102349801A CN2011102674541A CN201110267454A CN102349801A CN 102349801 A CN102349801 A CN 102349801A CN 2011102674541 A CN2011102674541 A CN 2011102674541A CN 201110267454 A CN201110267454 A CN 201110267454A CN 102349801 A CN102349801 A CN 102349801A
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Abstract
The invention relates to an intelligent coffee maker circuit without standby power consumption, which comprises micro control unit (MCU) control circuit 3, a circuit switch control circuit 4, a switching power supply circuit 1 and an electromagnetic interference (EMI) absorbing circuit 2. The switching power supply circuit 1 comprises a bidirectional thyristor T1. The two main terminals of the bidirectional thyristor T1 are serially connected with an alternating-current (AC) power supply circuit. When a coffee maker is in a power-on state and does not work, the bidirectional thyristor T1 can open the switching power supply circuit 1 and cut off the power of all components on the MCU control circuit 3 to enable switching power supply circuit 1 and the components to be not powered on when the coffee maker is in a power-on static state. The intelligent coffee maker circuit without the standby power consumption has the advantages of simple structure, no standby power consumption, long service life and the like. When the coffee maker is in a standby state, by directly opening the switching power supply circuit 1 through the bidirectional thyristor T1, the switching power supply circuit 1 is not powered on when the coffee maker is in the power-on static state, the power of all components on the circuit switch control circuit 4 and the MCU control circuit 3 are cut off, the electric energy consumed by the components is reduced, the power consumed by the coffee maker in the standby state is zero and therefore the optimum energy-saving and environment-friendly effect is achieved.
Description
Technical field
The present invention relates to a kind of readiness control circuit of household electric appliance, especially relate to a kind of intelligent coffee machine circuit of no standby power.
Background technology
At present, energy growing tension, the stand-by power consumption of power supply are concerning energy-conserving and environment-protective, and many countries and regions are with the EUP standard of compulsory execution stand-by power consumption less than 0.5W, even higher zero-power is lower than the ERP standard of 0.3W.Existing many small household electrical appliances have idle function; When for example domestic electric appliances such as coffee machine, fruit juice mixer, electronics water pot, electric iron, electric oven, milk-boiling dev are plugged in the wall socket; Even these products leave unused; But, still consuming electric energy because in fact this equipment be in holding state.Along with technology innovation is regenerated and networked development; Appliance manufacturers has been developed (as: remote control switch, lasting digital demonstration, time switch, intelligent switch etc.) various idle functions; These new functions have also caused a large amount of energy wastes providing for the user greatly easily simultaneously.Oxonian family standby energy consumption investigation shows that family's standby energy consumption takies 8% of power consumption total amount, and the investigation of the Organization of Economy and Cooperation Development (OECD) more shows, stand-by power consumption has accounted for 3~13% of home-use electric weight in its member state.Reduce stand-by power consumption and become an energy-conservation important directions of electric equipment products.
Though prior art can reduce stand-by power consumption; But because complicated circuit; Components and parts are more; Generally in non-loaded shutdown or standby; Components and parts charged when all are static are understood consumed power; So present existing technology can only accomplish below the 0.5W that if more at the circuit elements device, circuit is than standard that does not just reach higher green energy conservation under the complicated situation or ERP standard.
Summary of the invention
The object of the invention provides a kind of intelligent coffee machine circuit of no standby power.Solving the existing in prior technology complicated circuit, the clear wasted work rate of standby does not reach the technical problems such as standard of zero-power under the more situation of components and parts.
For solving the problems of the technologies described above; The technical scheme that the present invention adopted is: the intelligent coffee machine circuit of no standby power; Comprise that MCU control circuit 3, contactor control circuit 4, switching power circuit 1, EMI absorb circuit 2; Said switching power circuit 1 comprises bidirectional triode thyristor T1, and two main terminals of this bidirectional triode thyristor T1 are connected in the AC power supply circuits; Said bidirectional triode thyristor T1 is not when coffee machine is worked under "on" position, through cut-off switch power circuit 1, and the components and parts power supply on all MCU control circuits 3, make its no power under the energising quiescent conditions.
Operation principle of the present invention is: when coffee machine does not have control not touch POWER KEY key static state in energising; The IO mouth PIN KEY POWER of MCU control circuit 3 is input as high level always; The MCU start that is not triggered this moment; The IO mouth PWR CTRL pin of MCU control circuit 3 is a low level always; Make triode Q1, diode D2 all end, do not have electric current to pass through to break off in the circuit always; The controllable silicon T1 control end G utmost point does not have trigger current to form simultaneously, and this controllable silicon T1 is in cut-off state; The input pin of controllable silicon T1 and not conducting of output pin; Be directed at the contactor control circuit 4 that controllable silicon T1 exports to the back; All circuit of MCU and controllable silicon output thereof are disconnected; There is not electric current to pass through; Can't form the loop; On this circuit elements device, do not switch on, and do not have power consumption, consume thereby reach zero of non-loaded standby or shutdown electric energy.
As preferably; The IO interface pin KEY1 of said MCU control circuit 3 links to each other with resistance R 12 series connection and with the MCU circuit; The pin KEY POWER of MCU control circuit 3 joins through the negative electrode of resistance R 10 with diode D4 with capacitor C 4 parallelly connected backs; The pin PWR CTRL of MCU control circuit 3 links to each other with the base stage of triode Q1 through resistance R 5; The colelctor electrode of triode Q1 links to each other with the MCU circuit, the emitter stage connecting to neutral current potential of triode Q1.
As preferably, said triode Q1 is the NPN type triode that high level conducting, low level are ended.
As preferably, said switching power circuit 1 comprises fuse F 1, piezo-resistance VDR1, capacitor C 1, resistance R 3, R1, R2, and wherein piezo-resistance VDR1, capacitor C 1 and resistance R 1, R2 series circuit are parallelly connected.
As preferably, said POWER KEY, diode D3, D2 join through resistance R 4 and the G level of bidirectional triode thyristor T1, and the input pin of said bidirectional triode thyristor T1 controlled end links to each other with electric main; Bidirectional triode thyristor T1 output pin is connected with inductor L1 through commutation diode D1, and commutation diode D1 selects for use the higher IN4007 of withstand voltage to carry out rectification, and the inductance value of inductor L1 is 1.2mH, and saturation current is 350mA.
As preferably, said super capacitor C2 and C3 and inductor L1 form " mouth " mode filter to satisfy the requirement of EMI circuit.
As preferably; Said contactor control circuit 4 converts output current into voltage through resistance R 9 with super capacitor C6; Through resistance R 10 it is being fed back to the feedback pin of LNK306P; Wherein to select the precision of 4.3K Ω for use be 1% measuring resistance to resistance R 10; It is 1% measuring resistance that resistance R 9 is selected the precision of 2K Ω for use; Super capacitor C6 gets 10uF, and withstand voltage is 50V.
Advantages such as that the present invention has is simple in structure, no standby power, long service life, when the coffee machine standby, directly cut-off switch power circuit 1 makes its no power under energising is static through a bidirectional triode thyristor in the present invention.Controllable silicon does not have under the conducting situation; Components and parts power supply on contactor control circuit 4 and the MCU control circuit 3 all breaks off; Reduced the electric energy that consumes on the components and parts, making the consumed power of coffee machine when standby is zero, thereby reaches best energy-conserving and environment-protective purpose.
Description of drawings
Fig. 1 is the structural representation of circuit of the present invention.
The specific embodiment
Pass through embodiment below, and combine accompanying drawing, technical scheme of the present invention is further specified.
Fig. 1 is the structural representation of circuit of the present invention.Can know by Fig. 1; The intelligent coffee machine circuit of no standby power; Comprise that MCU control circuit 3, contactor control circuit 4, switching power circuit 1, EMI absorb circuit 2; Wherein switching power circuit 1 comprises fuse F 1, piezo-resistance VDR1, capacitor C 1; Resistance R 3, R1, R2 and bidirectional triode thyristor T1 wherein connect with resistance R 3 again after piezo-resistance VDR1, capacitor C 1 and resistance R 1, the parallel connection of R2 series circuit.Two main terminals of said bidirectional triode thyristor T1 are connected in the AC power supply circuits; This bidirectional triode thyristor T1 is not when coffee machine is worked under "on" position; Through cut-off switch power circuit 1, and the components and parts power supply on all MCU control circuits 3, make its no power under the energising quiescent conditions.
Power output stage is made up of relevant components and parts such as LNK306P in the contactor control circuit 4, works in constant current output, is convenient to circuit working in stable state.Circuit utilizes the FB pin of LinkSwitch-TN temperature stabilization that accurate output current is provided as a reference; Convert output current into voltage through resistance R 9 with super capacitor C6; Through resistance R 10 it is being fed back to the feedback pin of LNK306P; Wherein to select the precision of 4.3K Ω for use be 1% measuring resistance to resistance R 10; It is 1% measuring resistance that resistance R 9 is selected the precision of 2K Ω for use; Super capacitor C6 gets 10uF, and withstand voltage is 50V.
The IO interface pin KEY1 of said MCU control circuit 3 links to each other with resistance R 12 series connection and with the MCU circuit; The pin KEY POWER of MCU control circuit 3 joins through the negative electrode of resistance R 8 with diode D4 with capacitor C 4 parallelly connected backs; The pin PWR CTRL of MCU control circuit 3 links to each other with the base stage of triode Q1 through resistance R 5; The colelctor electrode of triode Q1 links to each other with circuit, the emitter stage connecting to neutral current potential of triode Q1.Wherein triode Q1 is the NPN type triode that high level conducting, low level are ended.POWER KEY, diode D3, D2 join through resistance R 4 and the G level of bidirectional triode thyristor T1, and the input pin of said bidirectional triode thyristor T1 controlled end links to each other with electric main; Bidirectional triode thyristor T1 output pin is connected with inductor L1 through commutation diode D1, and commutation diode D1 selects for use the higher IN4007 of withstand voltage to carry out rectification, and the inductance value of inductor L1 is 1.2mH, and saturation current is 350mA.Super capacitor C2 forms the requirement (for wave filter can according to the different demands of product design) of " mouth " mode filter to satisfy the EMI circuit with C3 and inductor L1.
Operation principle: when coffee machine does not have control not touch POWER KEY key static state in energising; The IO mouth PIN KEY POWER of MCU control circuit 3 is input as high level always; The MCU start that is not triggered this moment; The IO mouth PWR CTRL pin of MCU control circuit is a low level always; Make triode Q1, diode D2 all end, be equivalent to break off always; Controllable silicon T1 is not because the control end G utmost point has trigger current to form, so controllable silicon is in cut-off state.The input pin of controllable silicon T1 and not conducting of output pin; Be equivalent to break off; Be directed at the contactor control circuit 1 that controllable silicon T1 exports to the back; All circuit of MCU control circuit 3 and controllable silicon output thereof are disconnected; Energising can't not form the loop, on this circuit elements device, does not switch on; And do not have power consumption, thereby reached the consumption that is reduced in non-loaded standby or shutdown electric energy greatly.
Coffee machine is in normal operating conditions:
Short click POWER KEY and makes J1 two terminal shortcircuits once, what connect respectively because of the negative pole of D2, D3 is the zero potential of DC power supply; Because the cathode voltage of diode is greater than cathode voltage; So two diode D2, D3 change conducting state into by ending simultaneously; Being equivalent to a lead is communicated with; Electric current arrives the CGD zero potential through R4 then; This moment, the G utmost point trigger electrode of bidirectional triode thyristor T1 was split into trigger current; The input pin of controllable silicon T1 and output short-circuit, controllable silicon T1 is switched on.Just the G utmost point of start back controllable silicon T1 triggers pin has the trigger current of formation and conducting always.MCU receives that the IO mouth KEY POWER output of instruction back detects once for triggering start for level simultaneously; MCU start back PWR CTRL exports high level always; Through resistance R 5 triode Q1 B very high level by saturation conduction; (Q1 is the NPN type, the high level conducting) this moment, diode D2 was switched on.AC power supplies passes through switching power circuit 1 through commutation diode D1 rectification; Pass through the filter circuit that EMI is made up of inductor L1, super capacitor C2, C3 again; MCU and control circuit 3 have been supplied with through output DC power supply 5V after 4 step-downs of contactor control circuit at last; Make MCU control circuit 3 and other components and parts and work always; Formed a loop control, made whole coffee function obtain the power supply supply.
Coffee machine is in holding state:
Only needing once more weak point to click POWER KEY makes J1 be shorted to zero potential CGD; Diode D4 conducting this moment; Thereby make the KEY-POWER pin of MCU detect low level once; After being triggered; The PWR-CTRL pin output low level of MCU; The base stage of triode Q1 detects low level through resistance R 5 and ends (Q1 is the NPN type, and low level is ended).The colelctor electrode, the emitter stage that are equivalent to triode Q1 are opened a way, and make diode D2 negative pole and the open circuit that links to each other, and the triggering pin G utmost point of controllable silicon T1 does not form trigger current, and controllable silicon T1 input pin and output pin break off.AC power supplies is disconnected, after the controllable silicon T1 no-output, and the no DC power supplys output of contactor control circuit 4, MCU and control circuit 3 do not have electric energy fully, thereby get into off-mode, and consumed power not, the standard of zero consumed power when reaching non-loaded standby or shutdown.
The above only is the preferred embodiments of the present invention, can not limit scope of the present invention with this, and the present invention also can be used for other similar electronic equipment and domestic electric appliance.
Claims (7)
1. the intelligent coffee machine circuit of no standby power; Comprise that MCU control circuit 3, contactor control circuit 4, switching power circuit 1, EMI absorb circuit 2; It is characterized in that; Said switching power circuit 1 comprises bidirectional triode thyristor T1, and two main terminals of this bidirectional triode thyristor T1 are connected in the AC power supply circuits; Said bidirectional triode thyristor T1 is not when coffee machine is worked under "on" position, through cut-off switch power circuit 1, and the components and parts power supply on all MCU control circuits 3, make its no power under the energising quiescent conditions.
2. the intelligent coffee machine circuit of no standby power according to claim 1; It is characterized in that; The IO interface pin KEY1 of said MCU control circuit 3 links to each other with resistance R 12 series connection and with the MCU circuit; The pin KEY POWER of MCU control circuit 3 joins through the negative electrode of resistance R 10 with diode D4 with capacitor C 4 parallelly connected backs; The pin PWR CTRL of MCU control circuit 3 links to each other with the base stage of triode Q1 through resistance R 5; The colelctor electrode of triode Q1 links to each other with the MCU circuit, the emitter stage connecting to neutral current potential of triode Q1.
3. the intelligent coffee machine circuit of no standby power according to claim 1 and 2 is characterized in that, said triode Q1 is the NPN type triode that high level conducting, low level are ended.
4. the intelligent coffee machine circuit of no standby power according to claim 1; It is characterized in that; Said switching power circuit 1 comprises fuse F 1, piezo-resistance VDR1, capacitor C 1, resistance R 3, R1, R2, and wherein piezo-resistance VDR1, capacitor C 1 and resistance R 1, R2 series circuit are parallelly connected.
5. the intelligent coffee machine circuit of no standby power according to claim 1 and 2; It is characterized in that; Said POWER KEY, diode D3, D2 join through resistance R 4 and the G level of bidirectional triode thyristor T1, and the input pin of said bidirectional triode thyristor T1 controlled end links to each other with electric main; Bidirectional triode thyristor T1 output pin is connected with inductor L1 through commutation diode D1, and commutation diode D1 selects for use the higher IN4007 of withstand voltage to carry out rectification, and the inductance value of inductor L1 is 1.2mH, and saturation current is 350mA.
6. the intelligent coffee machine circuit of no standby power according to claim 1 and 2 is characterized in that, said super capacitor C2 and C3 and inductor L1 form " mouth " mode filter to satisfy the requirement of EMI circuit.
7. the intelligent coffee machine circuit of no standby power according to claim 1; It is characterized in that; Said contactor control circuit 4 converts output current into voltage through resistance R 9 with super capacitor C6; Through resistance R 10 it is being fed back to the feedback pin of LNK306P; Wherein to select the precision of 4.3K Ω for use be 1% measuring resistance to resistance R 10; It is 1% measuring resistance that resistance R 9 is selected the precision of 2K Ω for use, and super capacitor C6 gets 10uF, and withstand voltage is 50V.
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CN107346144A (en) * | 2017-03-13 | 2017-11-14 | 苏州咖博士咖啡系统科技有限公司 | A kind of coffee machine heating system control circuit of high reliability |
CN109814458A (en) * | 2019-02-14 | 2019-05-28 | 深圳朗特智能控制股份有限公司 | Low-power consumption standby control circuit |
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Address after: 518000 Guangdong city in Shenzhen Province, Baoan District Whampoa manhole Street East Ring Road No. 148 building, third industrial park is the wind Patentee after: Shenzhen Langte intelligent control Limited by Share Ltd Address before: 518000 Guangdong city in Shenzhen Province, Baoan District Whampoa manhole Street East Ring Road No. 148 building, third industrial park is the wind Patentee before: Shenzhen Longtech Electronics Co.,Ltd. |