CN105116779B - A kind of appliance terminal control panel circuit of low standby power loss - Google Patents
A kind of appliance terminal control panel circuit of low standby power loss Download PDFInfo
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- CN105116779B CN105116779B CN201510584665.6A CN201510584665A CN105116779B CN 105116779 B CN105116779 B CN 105116779B CN 201510584665 A CN201510584665 A CN 201510584665A CN 105116779 B CN105116779 B CN 105116779B
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
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Abstract
The present invention relates to a kind of appliance terminal control panel circuit of low standby power loss, including power module, MCU main control modules, display module, drive module, relay (K1), first triode (Q1), first resistor (R1), first diode (D1), second diode (D2), first electric capacity (C1), 6th resistance (R6), 7th resistance (R7) and power switch (SW1), the input of power module and the live wire incoming end of civil power and zero line incoming end are connected, power module has+12V power output ends and+5V power output ends, it is characterized in that：Also include a safety electric capacity (C), the second triode (Q2), the 3rd triode (Q3), second resistance (R2), 3rd resistor (R3), the 4th resistance (R4), the 5th resistance (R5).Compared with prior art, the advantage of the invention is that：Only increase by two triodes, a safety electric capacity and several resistance, cost is relatively low, you can realize low standby power loss, while there can be buffer action with power network, it is to avoid high pressure is acted directly on appliance terminal control panel circuit.
Description
Technical field
The present invention relates to a kind of appliance terminal control panel circuit of low standby power loss.
Background technology
Current popular rotary drum washing machine control panel is substantially with controllable silicon come drive control, in order to realize inexpensive control
System, governor circuit all uses non-isolated scheme；In order to increase the service life of controllable silicon, make controllable silicon when standby not by power network
Impact, controllable silicon in control panel is disconnected with live wire using relay K1 when standby, and the power unit of governor circuit is also
In succession live wire, therefore power unit still can be impacted by power network, as shown in figure 1, dotted portion can be linear power supply in figure
It can also be Switching Power Supply.The advantage of linear power supply is that reliability is of a relatively high, has the disadvantage that stand-by power consumption is larger, common 3 watts
Transformer stand-by power consumption is between 0.5 watt and 1 watt, with the rise of voltage ripple of power network, particularly line voltage, stand-by power consumption
Steeply rise；And the advantage of Switching Power Supply is that have very high voltage bandwidth (85VAC~264VAC), stand-by power consumption is relatively low,
Typically within 0.5 watt, some low power consumption switch power supplys coordinate the control of governor circuit again, and stand-by power consumption can be made to be less than 0.1
Watt, but have the disadvantage that reliability is more relatively low, to reach the control chip cost of the Switching Power Supply of super-low standby power consumption within 0.1 watt
It is higher, and high frequency transformer coiling also has particular/special requirement, and transformer cost is also increased slightly.
In order to reduce power consumption, someone has invented the control panel of zero-power, increases a conversion hysteria on original control panel
It is 5V electrical points and the connection of Key electrical points under mechanical switch SW1, conversion hysteria mechanical switch SW1 free states, conversion hysteria machinery is opened
Close SW1 be also simultaneously button and relay K1 together, for controlling the disconnection of live wire, circuit theory diagrams are used referring to shown in accompanying drawing 2
This method can be such that power supply is also disconnected with live wire.When pressing conversion hysteria mechanical switch SW1, power unit has connected live wire,
The MCU of governor circuit obtains electric start-up operation, at this moment realizes that the continued access of live wire is led to by control relay K1, relay K1 conversions
Type mechanical switch SW1 still continues electricity after unclamping, after relay K1 adhesives, and conversion hysteria mechanical switch SW1 just loses connection fire
The effect of line, is tightly used as switching on and shutting down button.Press the key under open state, what the MCU of governor circuit was shut down
After instruction, be delayed release relay K1, so that whole control panel power-off.With remodeling, mechanical switch SW1 controls power source design, by
It is fully disconnected after standby with power network, Zero-power-consumption standby can be realized, and substantially increase reliability.Due to control power firestreak
The conversion hysteria mechanical switch SW1 of connection is used in the environment of 220VAC, it is possible to produce electric arc, so to the requirement of its slider material
It is higher, thus it is relatively expensive, while some customer requirements have power-failure memory function (to do washing without completion with regard to power down, incoming call
Brought into operation afterwards from breakpoint) when, existing control panel circuit can not realize automatic start.
The content of the invention
The technical problems to be solved by the invention are that a kind of electrical equipment end of low standby power loss is provided for above-mentioned prior art
Control panel circuit is held, the circuit cost is relatively low, and has buffer action with power network.
The present invention solve the technical scheme that is used of above-mentioned technical problem for：A kind of appliance terminal control of low standby power loss
Plate circuit, including power module, MCU main control modules, display module, drive module, relay, the first triode, first resistor,
First diode, the second diode, the first electric capacity, the 6th resistance, the 7th resistance and power switch, the input of power module with
Live wire incoming end and zero line the incoming end connection of civil power, power module have+12V power output ends and+5V power output ends, its
The first end of repeat circuit coil and the+12V power output ends of power module are connected, the second end connection first of relay coil
It is connected after the colelctor electrode of triode, the base stage connection first resistor of the first triode with the I/O pin of MCU main control modules, diode
Positive pole connect the second end of relay coil, the negative pole of diode connects the first end of relay coil, the of power switch
With MCU main control modules after the+5V power output ends of one end connection power module, the 6th resistance of the second end connection of power switch
Another I/O pin connection, the positive pole of the second diode connects the second end of power switch, the negative pole connection MCU master of the second diode
The first end of the VDD pins of control module, the first electric capacity and the 7th resistance is connected with another I/O pin of MCU main control modules, the
Second end of one electric capacity and the 7th resistance is grounded；It is characterized in that：Also include a safety electric capacity, the second triode, the three or three
Pole pipe, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the first contact of its repeat circuit and the live wire of civil power are accessed
Also it is connected after end connection, the second contact portion safety electric capacity of relay with the live wire incoming end of civil power, the two ends of second resistance
The two ends of safety electric capacity are connected to, the second end of relay coil is connected after connecting the 4th resistance with the base stage of the 3rd triode,
The emitter stage of 3rd triode and the+12V power output ends of power module are connected, the electricity of colelctor electrode connection the 5th of the 3rd triode
Base stage after resistance with the second triode is connected, and the first end of 3rd resistor is connected with the base stage of the second triode, 3rd resistor
Second end is grounded；The emitter stage of display module and the VDD pins of drive module with the second triode is connected；In addition, relay
Emitter stage of the 3rd contact also with the second triode be connected；And the transmitting of the VDD pins and the second triode of MCU main control modules
+ 5V the power output ends of the VDD pins and power module of pole connection or MCU main control modules are connected.
The power module uses Switching Power Supply.
The safety capacitance selection capacitance is 0.01uF safety electric capacity.
Compared with prior art, the advantage of the invention is that：Only increase by two triodes, a safety electric capacity and several
Resistance, cost is relatively low, you can realize low standby power loss, while can have buffer action with power network, it is to avoid high pressure acts directly on electricity
On device terminal control plate circuit, so as to improve the reliability of appliance terminal control panel circuit.
Brief description of the drawings
Fig. 1 is a kind of schematic diagram of appliance terminal control panel circuit in the prior art；
Fig. 2 is another schematic diagram of appliance terminal control panel circuit in the prior art；
Fig. 3 is appliance terminal control panel circuit theory diagrams in the embodiment of the present invention one；
Fig. 4 is appliance terminal control panel circuit theory diagrams in the embodiment of the present invention two.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing embodiment.
Embodiment one
The appliance terminal control panel circuit of low standby power loss as shown in Figure 3, including it is power module, MCU main control modules, aobvious
Show module, drive module, relay K1, the first triode Q1, first resistor R1, the first diode D1, the second diode D2,
One electric capacity C1, the 6th resistance R6, the 7th resistance R7 and power switch SW1, the input of power module and the live wire of civil power are accessed
End and the connection of zero line incoming end, power module have+12V power output ends and+5V power output ends, its repeat circuit K1 coils
First end and the+12V power output ends of power module connect, the second end of relay K1 coils connects the first triode Q1's
It is connected after colelctor electrode, the first triode Q1 base stage connection first resistor R1 with the I/O pin of MCU main control modules, diode D1's
Positive pole connects the second end of relay K1 coils, and diode D1 negative pole connects the first end of relay K1 coils, power switch
SW1 first end connects the+5V power output ends of power module, power switch SW1 the second end connect after the 6th resistance R6 with
Another I/O pin connection of MCU main control modules, the second diode D2 positive pole connection power switch SW1 the second end, the two or two
Pole pipe D2 negative pole connects the VDD pins of MCU main control modules, the first electric capacity C1 and the 7th resistance R7 first end with MCU master
Another I/O pin for controlling module is connected, and the first electric capacity C1 and the 7th resistance R7 the second end are grounded；It is characterized in that：Also include
One safety electric capacity C, the second triode Q2, the 3rd triode Q3, second resistance R2,3rd resistor R3, the 4th resistance R4, the 5th electricity
R5 is hindered, its repeat circuit K1 the first contact and the live wire incoming end of civil power are connected, relay K1 the second contact portion safety
Live wire incoming end after electric capacity C also with civil power is connected, and second resistance R2 two ends are connected to safety electric capacity C two ends, relay
Second end of K1 coils be connected after connecting the 4th resistance R4 with the 3rd triode Q3 base stage, the 3rd triode Q3 emitter stage and
With the second triode after the+12V power output ends connection of power module, the 3rd triode Q3 the 5th resistance R5 of colelctor electrode connection
Q2 base stage connection, the first end of 3rd resistor (R3) is connected with the second triode Q2 base stage, 3rd resistor R3 the second end
Ground connection；The emitter stage of display module and the VDD pins of drive module with the second triode Q2 is connected；In addition, relay K1
Emitter stage of 3rd contact also with the second triode Q2 is connected；And the VDD pins of MCU main control modules and the second triode Q2 hair
Emitter-base bandgap grading is connected.
In foregoing circuit, power module uses Switching Power Supply, and relay K1 is conversion hysteria relay.
Capacitance-resistance step down type load connection circuit in, in the case that load voltage is constant, capacitance-resistance voltage reduction circuit equivalent to
Resistance-capacitance depressurization part, using this feature, is assumed a constant-current source by one constant-current source, and is loaded variable, it is meant that when negative
Load impedance is smaller, and the power of consumption is smaller, if when capacitance-resistance voltage reduction circuit loads change in actual applications, load voltage is to become
Change, the electric current of capacitance-resistance is also change, when loading relatively low (below 36V), varying less for electric current is electric with loading
Pressure increases, and electric current can drastically diminish, according to these characteristics of resistance-capacitance depressurization, in this circuit, by the live wire incoming end of power module
Separated with safety electric capacity, play the effect of decompression protection.
When appliance terminal control panel circuit is under ideal case, relay connects the live wire of Switching Power Supply when losing electricity
Enter end directly to disconnect；At this moment Switching Power Supply live wire incoming end passes through the continuous electricity of safety electric capacity C；Switching Power Supply uses primary side feedback
Mode, using power management chip --- Taiwan is green up to (CR8903) or high precious (OB2666).This two chip has individual characteristic,
It could only be started working when the electrochemical capacitor in switching power circuit charges to 12V, so giving switch electricity in safety electric capacity
When source is continuous electric, Switching Power Supply is not to work always, but the work of interval.
Because Switching Power Supply is discontinuous operation, so whole appliance terminal control panel circuit is in standby, it is standby
Power consumption very little, during civil power 220VAC, stand-by power consumption only has 0.7 watt.And Switching Power Supply is directly connected on power network, works as power network
When voltage is raised, Switching Power Supply enters continuous duty, although in this way, still acting directly on the voltage ratio in Switching Power Supply
Theoretical value is much smaller；Such as when line voltage is up to 350VAC, the stand-by power consumption of whole appliance terminal control panel circuit also only has
0.25 watt.
The operation principle of foregoing circuit is：In the standby state, MCU main control modules are without electricity, this usage benefit
It is that program is simple, when pressing power switch SW1 ,+5V the power output ends of power module pass through power switch SW1, then pass through
Second diode D2 makes MCU main control modules obtain electric start-up operation；When MCU main control modules read power switch SW1 for high level, inhale
Relay K1 is closed, at this moment the first triode Q1, the second triode Q2 and the 3rd triode Q3 are all in conducting state；When power supply is opened
When closing SW1 releases, the second triode Q2 for being in conducting state replaces power switch SW1 and the second diode D2 to give display mould
Block, drive module and MCU main control modules are powered；When MCU main control modules read power switch SW1 for high level again, release
Relay K1, while the first triode Q1, the second triode Q2 and the 3rd triode Q3 also enter cut-off state, then unclamps power supply
When switching SW1, MCU main control modules lose electric energy, into holding state；This method software control is simple, can reach low work(
The effect of consumption, can also reach the effect for isolating anti-power network impact indirectly, have the disadvantage that power-failure memory function can not be realized, i.e. laundry does not have
There is completion with regard to power down, the function of being brought into operation after incoming call from breakpoint.
Because load is change, the voltage of load is also change, and safety electric capacity C electric current is also change.And
The sinusoidal voltage that load voltage gets over high pass safety electric capacity C can serious distortion.When Switching Power Supply does not work, load belongs to electricity
Electric capacity is solved, is charged equivalent to electrochemical capacitor.I.e. the charging voltage of the voltage electrochemical capacitor of load, due to load voltage U
It is dynamic change, so load is also cyclically-varying.The cycle of load, change was fixed when the voltage of power network is fixed
, but whether change by power frequency.So in actual engineer applied, safety electric capacity C selection is too big, and Switching Power Supply is just
Working condition is had been at, the effect of insulation blocking is just reduced；Safety electric capacity C chooses too small, especially in low pressure, during charging
Between it is oversize, the first time for connecting power network to Switching Power Supply output 5V voltages is oversize, and user can not receive.So we need not
The size of the safety electric capacity C used in calculating is gone using complicated formula, but during by minimum operating voltage, is connected after power network,
Export 5V voltage times to choose C. for washing machine control panel to Switching Power Supply, it is desirable to can normal work in low pressure -15%
Make, when surplus is amplified into -25%, i.e. voltage as little as 165VAC (220* (1-25%)), it is desirable to from power network is connected to switch electricity
The time of source output 5V voltages is no more than 2 seconds (general user after plug is plugged, to the time for turning round operation control panel
Can be more than 2 seconds), under 165VAC voltages, experiment is gone with different safety electric capacity, start the time when now from 0.01uF only
1.66 seconds are needed, meets actual operation requirements.
Embodiment two
From unlike embodiment one ,+5V the power output ends of the VDD pins of MCU main control modules directly with power module
Connection.
Operation principle and embodiment one are essentially identical, unlike MCU main control modules VDD pins directly and power module
The connection of+5V power output ends, MCU main control modules have electricity always.And in order that standby lower saving electric energy (makes 5V voltages keep not
Become), it is necessary to allow MCU main control modules in a dormant state, only power switch SW1 is pressed or could activated when upper for the first time electric
MCU main control modules, as long as therefore power network has electricity, MCU main control modules just have electricity, thus except realize embodiment one describe function
Outside, moreover it is possible to realize power-failure memory function.
Claims (3)
1. a kind of appliance terminal control panel circuit of low standby power loss, including power module, MCU main control modules, display module, drive
Dynamic model block, relay (K1), the first triode (Q1), first resistor (R1), the first diode (D1), the second diode (D2),
First electric capacity (C1), the 6th resistance (R6), the 7th resistance (R7) and power switch (SW1), the input and civil power of power module
Live wire incoming end and the connection of zero line incoming end, power module has+12V power output ends and+5V power output ends, and it is relayed
The first end of electrical equipment (K1) coil and the+12V power output ends of power module are connected, the second end connection of relay (K1) coil
The colelctor electrode of first triode (Q1), the first triode (Q1) base stage connection first resistor (R1) afterwards with MCU main control modules
I/O pin is connected, and the positive pole of diode (D1) connects second end of relay (K1) coil, the negative pole connection of diode (D1) after
The first end of electrical equipment (K1) coil, the first end of power switch (SW1) connects+5V power output ends of power module, and power supply is opened
The second end the 6th resistance (R6) of connection for closing (SW1) is connected with another I/O pin of MCU main control modules afterwards, the second diode (D2)
Positive pole connection power switch (SW1) the second end, the negative pole of the second diode (D2) connects the VDD pins of MCU main control modules,
The first end of first electric capacity (C1) and the 7th resistance (R7) is connected with another I/O pin of MCU main control modules, the first electric capacity
(C1) it is grounded with the second end of the 7th resistance (R7)；It is characterized in that：Also include a safety electric capacity (C), the second triode
(Q2), the 3rd triode (Q3), second resistance (R2), 3rd resistor (R3), the 4th resistance (R4), the 5th resistance (R5), wherein
First contact of relay (K1) and the live wire incoming end of civil power are connected, the second contact portion safety electric capacity of relay (K1)
(C) the live wire incoming end after also with civil power is connected, and the two ends of second resistance (R2) are connected to safety electric capacity (C) two ends, relay
Second end of device (K1) coil connects base stage of the 4th resistance (R4) afterwards with the 3rd triode (Q3) and is connected, the 3rd triode (Q3)
Emitter stage and the+12V power output ends of power module connect, the colelctor electrode of the 3rd triode (Q3) connects the 5th resistance (R5)
The base stage with the second triode (Q2) is connected afterwards, and the first end of 3rd resistor (R3) is connected with the base stage of the second triode (Q2),
The second end ground connection of 3rd resistor (R3)；The transmitting of display module and the VDD pins of drive module with the second triode (Q2)
Pole is connected；In addition, emitter stage of the 3rd contact of relay (K1) also with the second triode (Q2) is connected；And MCU main control modules
VDD pins be connected with the emitter stage of the second triode (Q2) or MCU main control modules VDD pins and power module+5V electricity
Source output terminal is connected.
2. the appliance terminal control panel circuit of low standby power loss according to claim 1, it is characterised in that：The power supply mould
Block uses Switching Power Supply.
3. the appliance terminal control panel circuit of low standby power loss according to claim 1, it is characterised in that：The safety electricity
Hold the safety electric capacity that selection capacitance is 0.01uF.
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| CN201510584665.6A CN105116779B (en) | 2015-09-15 | 2015-09-15 | A kind of appliance terminal control panel circuit of low standby power loss |
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| CN201510584665.6A CN105116779B (en) | 2015-09-15 | 2015-09-15 | A kind of appliance terminal control panel circuit of low standby power loss |
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| CN105116779B true CN105116779B (en) | 2017-09-22 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108092361A (en) * | 2017-12-26 | 2018-05-29 | 深圳市恒浩伟业科技有限公司 | The battery protecting circuit of low standby power loss and car emergency startup power supply |
| CN111258257B (en) * | 2020-03-30 | 2024-08-27 | 宁波亿盛电机有限公司 | Controller for food waste disposer |
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| CN101533303A (en) * | 2008-03-12 | 2009-09-16 | 鸿富锦精密工业（深圳）有限公司 | Switch power supply circuit with power saving function |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201813355U (en) * | 2010-01-21 | 2011-04-27 | 代傲电子控制（南京）有限公司 | Single chip-based switch circuit with low stand-by power consumption |
| CN201876695U (en) * | 2010-10-22 | 2011-06-22 | 深圳市振邦实业有限公司 | Household appliance control circuit with low standby power |
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Address after: 315327 Ningbo Province, Hangzhou Bay New District, the town of the East Yuan Xiang Village Industrial Park, No. two weft Road, No. 758 Applicant after: Zhejiang zhuoao Polytron Technologies Inc Address before: Two road 315327 Zhejiang province Andong town of Cixi City Industrial Zone No. 758 weft Applicant before: Ningbo ZuoAo Electronics Technology Co., Ltd. |
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