CN1834829A - Micropower stand-by controller and method thereof - Google Patents
Micropower stand-by controller and method thereof Download PDFInfo
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- CN1834829A CN1834829A CN 200510055250 CN200510055250A CN1834829A CN 1834829 A CN1834829 A CN 1834829A CN 200510055250 CN200510055250 CN 200510055250 CN 200510055250 A CN200510055250 A CN 200510055250A CN 1834829 A CN1834829 A CN 1834829A
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Abstract
The invention relates to a control device and method able to implement micropower standby of electronic and electrical appliance systems, etc, comprising power supply unit, standby control unit and standby signal unit, where the standby control unit is connected AC input end of the power supply unit and can control ON and OFF of the input end of the power supply unit, power supply end of the standby signal unit is connected with DC standby voltage output end of the power supply unit and signal output end of the standby signal unit is connected with signal input end of the standby control unit. As a system operates in a standby mode, the standby signal unit sends a standby signal whose pulse width is t and whose period is T to the standby control unit according to whether the DC standby voltage outputted by the standby signal unit reaches upper and lower limits, so as to make the standby control unit periodically switched on and switched off with the standby signal and switch on the AC power supply of the power supply unit, thus receiving system standby power.
Description
Technical field
The present invention relates to a kind of micropower stand-by control device and method, can make system realize micropower stand-by, can be widely used in line related devices such as electronics, electrical equipment, communication, office equipment, computing machine, power supply adaptor and standby saver with standby mode.
Background technology
In the prior art, system such as electronics, electrical equipment majority all has standby mode, after inserting the supply socket energized, system when not being used (off-mode), also wishes that system works is in standby mode (also claiming low-power mode) even be, so that use soft-touch type button or remote control to start operation, rather than all power supplys of disconnecting device.Therefore the electronic apparatus system still consumes certain electric energy when standby mode.Various electronic apparatus system is also different because of manufacturer and different its standby powers of product type.
Referring to Fig. 1, be the standby theory diagram of systems such as conventional electromagnetic oven, micro-wave oven, range hood and water heater.After attaching plug inserted supply socket, AC power AC directly inputed to the power supply unit (be generally linear power supply, also have and adopt the switchette power supply) of system and ac high-voltage is transformed to DC 5V and DC DC voltage V
L(be generally 9V～12V) and offer system control unit (present product includes microprocessor mostly) and other unit of system.The system that has also has DC VD V
H, be DC18V as the fan electromotor of electromagnetic oven.AC power AC directly enters other unit of system, other unit of said system is meant High frequency power converting unit and the fan electromotor such as electromagnetic oven, the illuminating lamp of micro-wave oven, worktable motor and magnetron unit, the illuminating lamp of range hood and motor, the heating element of water heater etc.Its power consumption is mostly between 3W～6W when standby mode.Even adopt its standby power of system of switchette power supply also comparatively considerable.
One is used power to be 14W as the mellotron of 23W with the standby power of linear power adapter.And can often forget after general user's use and pull out attaching plug.
Televisor uses Switching Power Supply as power pack, and its stand-by power consumption is also very big, and therefore, each manufacturer adopts various measures one after another and reduces the standby power of its product both at home and abroad.The chip that will adopt that has drops to 1W with standby power, and the method for designing auxiliary power that an operate power is little under standby mode of the major and minor power supply of employing that also has is for standby electricity consumptions such as microprocessors, and standby power drops to 0.7W.
Main frame standby power China national standard of computer system will be closed mode off mode and is interpreted as product and be connected on the electric network source, and the power switch of product is " breaking " state, and the unit interval power consumption values of regulation computing machine under the mode of closing should be not more than 3W.The mode of closing of standard to describe is identical with our said standby mode, has manufacturer to release the product of standby power less than 3W in the recent period.
Now having occurred the technology and the product of the standby saver of a kind of family expenses and commercialization again, is the power supply that adopts various electrical installations in the electronic technology pulpit, can save the power consumption of electrical installation under standby mode, but himself still have certain standby power.
Therefore, prior art also only drops to nearly 1W with standby power is minimum, the standby power summation of the various electric equipment productss in the whole world remains a no small number, and the loss of the electric power resource that causes and the environmental pollution that therefore brings must cause our attention and take further measures and reduce.
Summary of the invention
The object of the present invention is to provide a kind of systems such as electronics, electrical equipment that make to realize micropower stand-by control device and method, have power supply unit, Opportunity awaiting control for linear unit and standby signal unit.The Opportunity awaiting control for linear unit is connected the also input end break-make of controllable power unit with the AC ac power input end of power supply unit, the power end of standby signal unit connects the DC standby voltage end of power supply unit output, and its signal output part connects the signal input part of Opportunity awaiting control for linear unit.When system works during at standby mode, whether the DC standby voltage of being exported according to power supply unit by the standby signal unit reaches the upper limit and following alignment Opportunity awaiting control for linear unit, and to send pulsewidth be the standby signal of T for the t cycle, make that the Opportunity awaiting control for linear unit is also periodic thereupon to be disconnected and the AC AC power of energized unit, with the low standby power of further reduction system.
Other purpose of the present invention and advantage are set forth part in the description below, and by practical application of the present invention, can more clearly realize that these advantages from describe.
In the following description, the integral body of devices such as electronics, electrical equipment is described to system (System), and the present invention is described to device (Equipment).
In order to achieve the above object, the invention provides a kind of micropower stand-by control device, it is characterized in that it comprises:
Power supply unit can be operated in standby mode, comprises power conversion unit and energy storage filter capacitor, the AC alternating voltage conversion of input can be output as DC standby voltage V
SBWith the DC DC voltage;
The Opportunity awaiting control for linear unit, can be operated in standby mode, its control output end is connected the AC ac input end of power supply unit, its signal input part connects the signal output part of standby signal unit, receive the standby signal that the standby signal unit sends when standby mode, the AC alternating current input power supplying of control power supply unit periodically turns on and off;
The standby signal unit can be operated in standby mode, the standby voltage V of its power end and power supply unit
SBEnd connects, and its signal output part is connected with the Opportunity awaiting control for linear unit, sends to the Opportunity awaiting control for linear unit when entering standby mode in system and turns on and off signal.
In order to reach above-mentioned and other purpose, the invention provides a kind of micropower stand-by control method that in system, realizes, this device has the power supply unit that the AC alternating voltage of input is converted to the DC DC voltage when system and described device enter standby mode, can turn on and off the Opportunity awaiting control for linear unit of power supply unit input end AC AC power, send the standby signal unit that turns on and off signal to the Opportunity awaiting control for linear unit, wherein the method comprising the steps of:
When system and described device are operated in standby mode, the Opportunity awaiting control for linear unit is subjected to the control of standby signal unit, the alternating current input power supplying of energized unit, make its shutoff through short time t, make its connection again through long-time T-t again, through short time t it is turn-offed again, periodically turn on and off the alternating current input power supplying of power supply unit like this according to pulsewidth t and period T, repeat this step.
This method further comprises step:
When system and described device are operated in standby mode, the AC alternating current input power supplying of energized unit, Opportunity awaiting control for linear unit, power supply unit gets electric, gives its inner energy storage filter capacitor makeup energy, DC standby voltage V
SBRise rapidly, reach in limited time through short time t voltage, standby signal unit output shutdown signal is given Opportunity awaiting control for linear unit, the AC AC power of Opportunity awaiting control for linear unit power down unit, energy storage filter capacitor in the power supply unit continues to keep the standby electricity consumption, standby voltage V
SBSlowly descend, reach down in limited time through long-time T-t voltage, standby signal unit output connection signal is given Opportunity awaiting control for linear unit, the AC AC power of energized unit, Opportunity awaiting control for linear unit, DC standby voltage V
SBRise rapidly, pass through short time t standby voltage V again
SBReach the upper limit rapidly, the standby signal unit is exported shutdown signal again and is given the Opportunity awaiting control for linear unit, the AC AC power of Opportunity awaiting control for linear unit power down unit, and it is the standby signal of t that the standby signal unit sends pulse width by period T to the Opportunity awaiting control for linear unit, standby voltage V
SBCyclical variation between upper and lower bound thereupon repeats above-mentioned steps.
Because the present invention is in system works during at standby mode, whether the DC standby voltage of being exported according to power supply unit by the standby signal unit reaches the upper limit and following alignment Opportunity awaiting control for linear unit, and to send pulsewidth be the standby signal of T for the t cycle, make the AC AC power of also periodic thereupon disconnection in Opportunity awaiting control for linear unit and energized unit, turn-on time, t can be far smaller than turn-off time T-t, and what turn-off is the AC AC power of power supply unit, all that cut off just that power supply unit brings can cause the factor of power consumption, even can also cut off the power supply supply (this describes) of other unit of system as required in following embodiment, therefore make standby power obtain greatly reducing.
Description of drawings
Fig. 1 is the standby theory diagram of typical electric systems such as electromagnetic oven in the prior art, micro-wave oven, range hood and water heater;
Fig. 2 is the standby control apparatus theory diagram of first embodiment of the invention;
Fig. 3 is the standby control apparatus theory diagram of second embodiment of the invention;
Fig. 4 is the standby control apparatus theory diagram of third embodiment of the invention;
Fig. 5 is the standby control apparatus theory diagram of fourth embodiment of the invention;
Fig. 6 is the standby control apparatus theory diagram of fifth embodiment of the invention;
Fig. 7 is the standby control apparatus theory diagram of sixth embodiment of the invention;
Fig. 8 is an Opportunity awaiting control for linear element circuit schematic diagram of the present invention;
Fig. 9 is a standby signal element circuit schematic diagram of the present invention;
Figure 10 is a standby signal sequential chart of the present invention;
Figure 11 is a system works logical flow chart of the present invention.
Embodiment
Fig. 1 is the standby system theory diagram of typical electrical equipment such as electromagnetic oven of the prior art, micro-wave oven, range hood and water heater.Total system 100 comprises power supply unit 110, system control unit 140, other unit 150 of system.Power supply unit 110 comprises power conversion unit 111, energy storage filter capacitor C111, mu balanced circuit 112 and capacitor C 112.Power conversion unit 111 normally is made up of linear transformer and rectifier bridge, the employing switchette power supply that also has.System control unit 140 includes microprocessor (early production employing logical circuit), is used for handling the operation signal of input, and the output shows signal is given the display circuit in the unit, and the output control signal is given other unit 150 of system, to realize the control to system 100.Other unit 150 of system is meant High frequency power converting unit and the fan electromotor such as electromagnetic oven, the illuminating lamp of micro-wave oven, worktable motor and magnetron unit, the illuminating lamp of range hood and motor, the well heater of water heater and corresponding driving unit thereof.
Behind the AC power connecting system 100, alternating voltage AC is added to the power conversion unit 111 of power supply unit 110, through voltage transformation, rectification, obtain other unit 150 of DC12V DC voltage feed system by capacitor C111 filtering again, through obtaining DC5V DC voltage feed system control module 140 after the mu balanced circuit 112 electric capacity of voltage regulation C3 filtering, at this moment, system is in standby mode before system does not start operation.The AC AC power of the front end of power supply unit 110 also is input to other unit 150 of system.For the such system of range hood, system has only other unit 150 illuminating lamp and such load and the driving circuit thereof of motor, as long as system control unit 140 does not send and starts run signal and just not consume electric power for it.But power supply unit 110 still need give system control unit 140 power supplies, and this has just produced certain standby power.Be included in high-voltage section branches such as High frequency power converting unit in other unit 150 of system and magnetron unit in addition for electromagnetic oven system and microwave oven system, as long as system power supply is connected, high-voltage power supply will be added on the part components and parts of its front end, also be in the energising duty all the time even be used for the electric capacity of filter action, also can produce certain leakage current, increase standby power, long-term work has reduced serviceable life etc. again.This also is like this for using Switching Power Supply as televisor, computing machine, the display system of power supply unit.
Fig. 2 is the first embodiment of the present invention, is applicable to systems such as electromagnetic oven, micro-wave oven, range hood and water heater.
Little standby power control device according to the present invention comprises: power supply unit 210, Opportunity awaiting control for linear unit 220, standby signal unit 230.
Referring to Fig. 8.Described Opportunity awaiting control for linear unit 220 comprises the phototriode IC221-1 of rectifier bridge BR221, field effect transistor Q221 and photoelectrical coupler IC221.The ac input end N1 of rectifier bridge BR221 and N2 are as the control output end, direct current output positive and negative terminal is connected with source S with field effect transistor Q221 drain D respectively, field effect transistor Q221 grid is connected with the phototriode IC221-1 collector of photoelectrical coupler IC221, and phototriode IC221-1 receives the light signal STAND BY that the photodiode IC221-2 from standby signal unit 230 sends as signal input part N4.
Described Opportunity awaiting control for linear unit 220 also comprises resistance R 221, transistor Q222 and Zener diode ZD221.One end of resistance R 221 is connected with the node of field effect transistor Q221 drain D, the other end is connected with the node of field effect transistor Q221 grid G, transistor Q222 collector is connected with the node of the phototriode IC221-1 collector of photoelectrical coupler IC221, its base stage and phototriode IC221-1 emitter connect to form complex pipe, its emitter is connected with the node of field effect transistor Q221 drain electrode S, Zener diode ZD221 negative electrode is connected with the node of field effect transistor Q221 grid G, and its anode is connected with the node of field effect transistor Q221 drain electrode S.
Referring to accompanying drawing 9.Standby signal circuit 230 comprises voltage detecting circuit IC231, transistor Q231, resistance R 231, R232, R233 and R234, Zener diode ZD231, diode D231.The output terminal of voltage detecting circuit IC231 is connected with the base stage of transistor Q231 by resistance R 233, the collector of transistor Q231 is connected photodiode IC221-2 anode and standby voltage V by resistance R 234 with the photodiode IC221-2 negative electrode of the photoelectrical coupler IC221 that exports as signal
SBEnd N5 connects.The voltage input end of voltage detecting circuit IC231 is by diode D231 and resistance R 231 and standby voltage V
SBEnd connects, and the negative electrode of Zener diode ZD231 is connected between resistance R 231 and the diode D231, anode be connected the pressure limiting effect publicly, to protect voltage detecting circuit IC231.
Standby signal STAND BY is that the phototriode IC221-1 by photoelectrical coupler IC221 receives the light signal that the photodiode IC221-2 from same photoelectrical coupler sends and transmits.
Different systems treats machine magnitude of voltage V
SBScope different requirements is arranged, detection voltage (Detection Voltage) and release voltage (Release Voltage) that might voltage detecting circuit IC231 can not meet the demands, therefore available diode D231 is as adjusting and compensation, if a diode can adopt a plurality of diode series connection to use inadequately.If detection voltage and the release voltage of voltage detecting circuit IC231 can be cancelled diode D231 in our claimed range.Because the electricity consumption that quits work of other unit 250 of system, and the dump energy that power supply unit 210 produces can not be consumed rapidly, causes standby voltage V when system is converted to standby mode by operational mode
SBRise, can near or surpass the operating voltage of voltage detecting circuit IC231, also have the operate as normal that also can influence voltage detecting circuit IC231 from the various disturbing pulses of electrical network, therefore adopt Zener diode ZD231 and resistance R 231 to be protected.If the standby voltage V that system produced
SBUnder various conditions of work, all be no more than the operating voltage of voltage detecting circuit IC231 and do not have stronger disturbing pulse just can cancel Zener diode ZD231 and resistance R 231.Resistance R 232 is the output terminal pull-up resistor of voltage detecting circuit IC231, can cancel this resistance for the chip of CMOS output.
If the voltage detecting circuit IC231 that adopts is its output terminal logical relation (is standby voltage V of the present invention for working as input voltage
SB) reach the upper limit and just export high level with regard to output low level and when reaching lower limit, and self be in the such chip of little power consumption mode at voltage by upper limit voltage detecting circuit IC231 in the process that lower limit reduces, then under the enough prerequisite of chip drives ability, can cancel the transistor Q231 that drives usefulness and change into by resistance R 233 and directly drive photodiode IC221-2.
The standby signal STAND BY of standby mode and DC standby voltage V
SBWaveform as shown in figure 10.Instantaneous when power connection, the AC alternating voltage constitutes loops by the power conversion unit in Opportunity awaiting control for linear unit 220 and the power supply unit 210 211, rectifier bridge BR221 DC terminal in the Opportunity awaiting control for linear unit 220 has high pressure output, be added in the D utmost point and the S utmost point of field effect transistor Q221, by resistance R 221 and Zener diode ZD221 current limliting, voltage stabilizing, DC voltage is added in the G utmost point of field effect transistor Q221 and makes its conducting, the control output end N1 of Opportunity awaiting control for linear unit 220 and the voltage of N2 are dragged down, the AC alternating voltage is added on the two ends N2 and N3 of power conversion unit 211, Opportunity awaiting control for linear unit 220 connect power supply unit 210, this also is the start-up course of described device Opportunity awaiting control for linear unit 220 when initially powering on.Waveform in the intercepting of N2-N3 point is the waveform that is added on the power supply unit 210, shown in Figure 10 D.
Pass through voltage transformation, the rectification of power conversion unit 211 then, the filtered DC direct current of capacitor C 211 energy storage standby voltage V
SBBe added on the standby signal unit 230, this voltage is to be risen rapidly by zero beginning that powers on when initial, and its waveform is for intercepting N5 point waveform over the ground, shown in Figure 10 B.By the elapsed time t1 that initially powers on, the voltage detecting circuit IC231 in standby signal unit 230 detects standby voltage V
SBReach upper limit V
ULWhen promptly reaching the release voltage (Release Voltage) of voltage detecting circuit IC231, the low level of its output when initial becomes high level, make transistor Q231 conducting through resistance R 233, and by the photodiode IC221-2 conducting among the transistor Q231 control photoelectrical coupler IC221, send the standby signal STAND BY that power down unit 210 power supplys are supplied with to Opportunity awaiting control for linear unit 220, the waveform that the standby signal waveform of this moment is ordered for intercepting N4 is shown in Figure 10 A.
Standby signal STAND BY is transferred to the phototriode IC221-1 in the same photoelectrical coupler in the Opportunity awaiting control for linear unit 220 with the pattern of light in photoelectrical coupler IC221 inside, the complex pipe conducting that itself and transistor Q222 are formed, the G pole tension of field effect transistor Q221 is dragged down, field effect transistor Q221 ends, make as Opportunity awaiting control for linear unit 220 control output end N1 and N2 shutoff by rectifier bridge BR221, just turn-offed the power supply of power supply unit 210 and supplied with.
After power supply unit 210 is turned off, in capacitor C 211, still storing certain electric weight, can continue to keep the power supply supply of standby signal unit 230 and mu balanced circuit 212 and system control unit 240, but standby voltage V
SBReduce gradually, be turned off beginning from power supply unit 210 and pass through long-time T-t again, as standby voltage V
SBBe reduced to lower limit V
LLWhen being the detection voltage (Detection Voltage) of voltage detecting circuit IC231, its output terminal level is by high step-down, transistor Q231 ends, the photodiode IC221-2 of photoelectrical coupler IC221 inside also ends, and standby signal unit 230 sends the standby signal of energized unit 210 to Opportunity awaiting control for linear unit 220.The standby signal of this moment is to end by the complex pipe that ending of the photodiode IC221-2 of photoelectrical coupler IC221 causes its inner phototriode IC221-1 and transistor Q222 are formed, therefore make the G utmost point of field effect transistor Q221 get electric its conducting that makes, rectifier bridge BR221 makes as Opportunity awaiting control for linear unit 220 control output end N1 and N2 voltage and drags down, 220 energized unit 210, Opportunity awaiting control for linear unit, standby voltage V
SBRise rapidly.Be switched on beginning from power supply unit 210 and pass through short time t again, standby voltage V
SBReached upper limit V again
UL, standby signal unit 230 sends the standby signal of shutoff again to the Opportunity awaiting control for linear unit.After this every one-period T connects and turn-offs once, from the time that is switched to shutoff be t, repeat this step, both guaranteed that the electric power of system under standby mode supplies with, greatly reduced the stand-by power consumption of system again.
As can be seen from Figure 10, in the oscillogram of the oscillogram of Figure 10 A standby signal STAND BY and Figure 10 D power supply unit 210 input end N2 and N3 turn-on time t and turn-off time T-t and period T be corresponding mutually.
Figure 10 C is the oscillogram in the intercepting of N6 point.When system control unit 240 input enabling signals make the system start-up operation, system control unit 240 wakes up, make other unit 250 of system enter the startup operational mode, need enough electric energy to guarantee normal operation, therefore system control unit 240 drives the photodiode IC222-2 conducting of photoelectrical coupler IC222, make the photoelectricity bidirectional triode thyristor IC222-1 conducting of the same photoelectrical coupler in the Opportunity awaiting control for linear unit 220, power supply unit 210 is connected fully, enters standby mode once more up to end of run.
As can be seen, when power supply unit 210 was connected fully under operational mode, the N4 point of Figure 10 A intercepting did not have standby signal output, the N5 point standby voltage V of Figure 10 B intercepting
SBBecome normal burning voltage V
L, the N6 point of Figure 10 C intercepting sends the ON/KEEP signal (conducting) in the ON/KEEP/OFF signal, makes the N2 and the N3 point of the power supply unit 210 of Figure 10 D intercepting connect the AC AC power fully.
When end of run enters standby mode, send OFF signal (ending) in the ON/KEEP/OFF signal at the N6 point of Figure 10 C intercepting, the standby voltage V that the N5 that intercepts at Figure 10 B is ordered
SBSlowly descend, reach lower limit V behind the elapsed time t2 again
LL, standby signal unit 230 sends the standby signal of connection again to the Opportunity awaiting control for linear unit, make power supply unit 210 connect the AC AC power, and is after this identical with above-mentioned standby mode.
Figure 11 is a system works logical flow chart of the present invention.As shown in figure 11, at step S301, initially the power on power supply of 220 energized unit 210, Opportunity awaiting control for linear unit of system, at step S302, judge whether to start operation, make system start-up because importing startup operation signal after system powers at any time, though systems generally can be at the instantaneous starting of energized behind the energized unit 220 that initially powers on, but enter behind the standby mode when the standby mode working cycle arrived also have below the step S301 this start operation may, therefore judge whether to start operation at step S302, if just change step S309 over to and start operation, if not, just change step S303 over to.
Step S303 is 220 energized unit, 210 back standby voltage V to its output in the Opportunity awaiting control for linear unit
SBWhether reach the upper limit and judge,, return step S302 upper end and continue step S302, S303, if reach upper limit execution in step S304 if do not reach the upper limit by standby signal unit 230.
Step S304 Opportunity awaiting control for linear unit 220 power down unit 210.For initially powering on be from step S301 to step S304, supply with because of first the capacitor C in the power supply unit 210 211 and standby signal unit 230 etc. being carried out electric power, voltage rises since 0, reaches standby voltage V behind the elapsed time t1
SBThe upper limit, though very of short duration, also long than entering the electric power prolongation t that carried out after the normal standby mode.
Step S305 is in the standby mode.From step S301, only otherwise enter step S309, this circulation step all belongs in the standby mode, is exactly the circulation step of right side part from S302 to S308 from Figure 11.
Step S306 judges whether to start operation, if, just enter step S309, if not, just enter step S307.
Step S307 judges standby voltage V by standby signal unit 230
SBWhether reach lower limit, if not, get back to step S306 upper end, if change step S308 over to.
220 energized unit 210, step S308 Opportunity awaiting control for linear unit are got back to step S302 upper end afterwards, continue next circulation.
From step S304 power down unit 210 begin to 210 this section periods of step S308 energized unit be T-t, the time president who continues, in above description, be referred to as long-time, this is that consumption will be slack-off because have only standby signal unit 230 and system control unit 240 to consume very faint electric current under standby mode.
Circulate from the next one, 210 to step S304 power down unit, 210 used time t can be very short by step S308 energized unit, in above description, be referred to as the short time, time t1 used when ratio initially powers on is short, this is because capacitor C 211 stores certain electric weight after initially power on, and makes standby voltage V
SBNot by zero but by lower limit V
LLBegin to replenish, so will reach the upper limit rapidly.
Change step S309 startup operation over to carry out the instruction that starts operation when system after, enter 210 energized unit 210, step S310 Opportunity awaiting control for linear unit, enter step 311 operational mode.Be defined as the operational mode scope from step S309 to step S313.
Carry out instruction out of service in step S312 system, and then execution in step S313 Opportunity awaiting control for linear unit 220 power down unit 210, change step S305 standby mode then over to.
Because different electronic apparatus systems can dispose the different types of different power conversion units and the energy storage filter capacitor of different capacity and different capabilities, therefore the period T of standby signal is also therefore different with pulsewidth t, the cycle of the AC power of t institute envelope is also different, the just signal that Figure 10 provides has been taked the exaggerative technique of painting for the ease of understanding.Be subjected to the electromagnetic interference (EMI) of extraneous and electrical network easily because of load and power supply, the phase angle of the AC power waveform of each cut-in point and pass breakpoint institute envelope is not necessarily on same point, therefore the period T and the pulsewidth t in each cycle are also not necessarily identical, but gap is little, in order clearly to describe principle of the present invention and central idea, this can be ignored.
At a power supply is that application data actual measurement on the AC220V electromagnetic oven is: T=110S, and t=35mS, the momentary current maximal value when energized unit, Opportunity awaiting control for linear unit (for the linear transformer power supply) is I=5.13mA.More than be repeatedly the mean value of test data.
As can be seen, the described standby signal of present embodiment unit 230 is by detecting DC standby voltage V
SBWhether reach upper and lower bound and decide the AC power of when turn-offing, the standby voltage V of power supply unit 210 outputs under its standby mode with energized unit 210
SBLoad capacity be can be along with the variation of load is self-regulating, be subjected to increase load capacity automatically to adapt to this variation when extraneous interference such as electromagnetism slightly increase if load on, if AC power supplies voltage is subjected to the influence of electrical network that sudden change is arranged or decreases, it also can be regulated automatically, guarantees standby voltage V
SBAt V
ULAnd V
LLBetween, make system and device stably under standby mode with extremely low standby power work, when the sudden change of load or line voltage, guarantee that enough electric power supply are arranged, avoid system in case of system halt, can under the environment of inclement condition, use.
In addition, DC standby voltage V
SBBecause having connected the AC AC power of power supply unit 210 fully, Opportunity awaiting control for linear unit 220 make power supply unit 211 disengaging standby modes change operational mode over to, the DC standby voltage V of its output in system start-up operation back
SBVoltage V when also having returned to operation
LUse for other unit of system.
Because grid threshold voltage (the Gate Threshold Voltage) V of general field effect transistor
GS (th)=2～4V, therefore, the field effect transistor Q221 of Opportunity awaiting control for linear unit 220 can produce greater than V between the D and the S utmost point when conducting state
GS (th)Voltage drop, be generally about 8V, add the pressure drop on the rectifier bridge, can reach about 10V, after entering operational mode, standby mode also adopt the method for control field effect transistor Q221 conducting to make power supply unit 210 connect operation if finish, the long-time running meeting causes field effect transistor Q221 heating, makes the input terminal voltage of power supply unit 210 be starkly lower than the AC power supplies voltage of being introduced by attaching plug, causes energy loss.Therefore, at the ac input end of the rectifier bridge BR221 of readiness control circuit 220 and connect an on-off element, that exemplify in the present embodiment circuit is the photoelectrical coupler IC222 that adopts bidirectional triode thyristor output, and also available relay replaces.When system enters the startup operational mode by standby mode, mu balanced circuit 212 output DC5V voltages are given system control unit 240, and the photodiode IC222-2 that is controlled among the photoelectrical coupler IC222 by system control unit 240 makes its conducting, startup/operation/cut-off signals ON/KEEP/OFF makes its conducting for photoelectricity bidirectional triode thyristor IC222-1 by photoelectrical coupler IC222 inside with optical signal transmission, therefore power supply unit 210 can be connected fully.
In order to make stand-by power consumption drop to floor level, the resistance of resistance R 221 is preferably in tens of M Ω, and resistance R 233 and R234 are preferably in hundreds of k Ω.DC standby voltage V
SBShould be controlled in the time of to make this device be operated in standby mode and the instantaneous needed minimum voltage of startup or the richness of slightly having a surplus, can guarantee that so promptly this device can be operated in standby mode reliably and can reliably start operation, can make this device at standby voltage V again
SBUnder the standby current minimum, the standby power that is consumed is also minimum.
For the power conversion unit in the power supply unit is the device of linear transformer, in order to eliminate this device periodic electromagnetic interference (EMI) of connecting the power cutoff transformer and bringing under standby mode, should and connect an anti-interference capacitor on the primary coil of power transformer to electrical network.For power conversion unit is the device of Switching Power Supply, and generally the input end of this type of power supply itself just has anti-interference capacitor, therefore can not consider.
When entering standby mode in system, the microprocessor in the system control unit 240 should enter sleep state rapidly, to reduce standby power.When starting operation, input operation signal wakes and carries out the startup working procedure rapidly up.
Referring to Fig. 3, the second embodiment of the present invention and first embodiment the Opportunity awaiting control for linear principle identical, different is:
For other unit 250 of system that also can produce considerable power consumption at standby mode, switch element 260 can be set to be controlled its power supply that power consumption is bigger under standby mode, the switch element 260 of power supply is connected between other unit 250 of system that power consumption is bigger under the DC dc output end of power supply unit 210 and the standby mode, and be subjected to the control of other unit 240 of system, the DC direct current supply of switch element 260 other unit 250 of cut-out system under standby mode is with further reduction standby power.If the V of other unit 250 of system
LEnd input power supply standby power under standby mode is bigger, just to V
LControl, and for as V
HCan control with the input power supply that AC so can consumed power under standby mode.When system enters the startup operational mode by standby mode, the V of switch element 260 other unit 250 of connection system
LThe power supply of end is supplied with, and makes system enter normal startup operational mode.
Referring to Fig. 4, the Opportunity awaiting control for linear principle of the third embodiment of the present invention is same as the previously described embodiments, is with the difference of the foregoing description:
If system is to V
LThe power requirement voltage stabilizing of end, and mu balanced circuit 213 also can produce bigger power consumption under standby mode, therefore mu balanced circuit 213 need be arranged on after the output terminal of switch element 260, also input end can be located at higher direct supply V according to concrete system
HEnd, the switch element of being controlled by system control unit 240 when entering standby mode in system 260 is its shutoff, when system enters when starting operational mode again with its connection.
If the AC AC power that power supply unit 210 offers other unit 250 of system also has certain power consumption and considers this part device when standby mode components and parts also long-term energising and bring hidden danger easily or reduce serviceable life of components and parts during standby, the words of also the AC AC power of other unit 250 of system being turn-offed when we wish to enter standby mode in system, an on-off element 270 can be set, be connected between the AC power supplies input end of system power supply AC end and other unit 250 of system, and by system control unit 240 controls, when system enters standby mode, the AC AC power of other unit 250 of system is turn-offed, enter when starting operational mode again with its connection.On-off element can adopt relay or solid-state relay or controllable silicon to the requirement of AC electric current according to system.
Referring to Fig. 5, the Opportunity awaiting control for linear principle of the fourth embodiment of the present invention is same as the previously described embodiments, is with the difference of the foregoing description:
If system control unit 240 still can produce bigger power consumption under standby mode, then increase standby operation unit 280, its power supply is by the DC standby voltage V of power supply unit 210
SBProvide, it is as an output termination switch element 261 and 262 of control, other unit 240 of another output terminal welding system.When 280 inputs of standby operation unit start the operation signal of operation, an one output terminal ON control switch unit 261 and 261 is connected the direct supply of mu balanced circuit 212 and mu balanced circuit 213 and other unit 250 of system, on-off element 270 is subjected to the driving of the DC5V of mu balanced circuit 212 outputs to connect the AC AC power of other unit 250 of system, its another output terminal is exported startup run signal to system control unit 240, makes system enter the startup operational mode and export maintenance (KEEP) signal by system control unit and makes its maintenance connection and system's maintenance is moved to switch element 261 and 261.Finish runtime system control module 240 and stop output and keep (KEEP) signal and transfer shutoffs (OFF) signal to and make its shutoff to switch element 261 and 261, system is out of service, enters standby mode.
Referring to Fig. 6, the fifth embodiment of the present invention is that the Opportunity awaiting control for linear with computer system is that example is described, and its Opportunity awaiting control for linear principle and the foregoing description are basic identical, is with the difference of the foregoing description:
When system connected the AC AC power, the standby principle was same as the previously described embodiments, need to prove that standby operation unit 280 does not have signal to export to on-off element 270 at this moment, and on-off element 270 also just can not be connected host power supply unit 290.
When startup (start) signal can be imported in standby operation unit 280, standby operation unit 280 output enabling signal ON made its AC AC power of connecting host power supply unit 290 for on-off element 270, and output+5V
SBGive decapacitation filter capacitor C211 in standby operation unit 280, standby signal unit 230 and the power supply unit 210 by diode D201, guarantee that they have enough electric power to use for operational mode and lay in as entering standby mode next time; Also output+5V is as keeping (KEEP) signal to give standby operation unit 280, and making its signal that also keeps (KEEP) to give on-off element 270 is on-state.(shutdown) signal is closed in 280 inputs when the standby operation unit, its output terminal also will be closed the PS-ON end that (shutdown) signal (OFF) is given host power supply unit 290 thereupon, and make host power supply unit 290 close (shutdown), + 5V stops output, just send and close (shutdown) signal (OFF) to standby operation unit 280, standby operation unit 280 sends to on-off element thereupon closes (shutdown) signal (OFF), cut off the AC AC power of host power supply unit 290, make system enter standby mode.
Switch S 201 is switches of telecommunication network start-up mode and standby electricity-saving mode.When switch being forwarded to+5V
SBTerminals the time be the telecommunication network start-up mode, also can be behind this moment shut down of computer by+5V
SBSend maintenance (KEEP) signal to the standby operation unit, the AC AC power that makes the on-off element 270 of its control can not turn-off host power supply unit 290 during this period.
Referring to Fig. 7, Opportunity awaiting control for linear principle and the foregoing description of the sixth embodiment of the present invention are basic identical, are with the difference of the foregoing description:
Cancelled in the foregoing description independently standby signal unit 230, its standby signal is to be produced by the microprocessor of holding concurrently in the system control unit 240 in the standby signal unit, and the generation of standby signal is according to DC standby voltage V
SBThe required time of rising in standby mode and dropping to upper and lower bound is write the standby signal program, and the standby signal that microprocessor is sent reaches actual requirement, as shown in Figure 9.Therefore, the standby signal program draws through design and test.Stand-by power consumption with a kind of its stand-by circuit of different model kind of product also can not be identical, and therefore standby signal program only is applicable to the system standby device of specific model.
The advantage of present embodiment is the cost that has reduced the standby signal unit, shortcoming is in order to make this device also have enough electric power to use for standby during the sudden change of load or line voltage under standby mode, the period T of standby signal and pulsewidth t leave enough surpluses than the standby signal of testing circuit with voltage, and the corresponding meeting of standby power increases to some extent like this.
Turn on and off under standby mode it and produce DC standby voltage V by the Opportunity awaiting control for linear unit controls
SBSupply with standby signal unit and standby operation unit, make its whole shutoffs by on-off element control other unit of intrasystem power supply unit, system control unit and system except that this device,
According to the principle that the standby signal of the foregoing description produces, standby signal is not confined to adopt voltage detecting circuit and microprocessor, can be realized by logical circuit yet.This is easy to realize for the professional and technical personnel.
Because the present invention is the DC standby voltage V according to power supply unit output when standby mode
SBWhether reach the AC AC power that upper and lower bound turns on and off the power supply unit input, the electric current of the ac input circuit of system and Opportunity awaiting control for linear unit and power supply unit is extremely small during power supply unit is turned off, only be the electric current of tens of million resistance of being connected with fet gate in the Opportunity awaiting control for linear unit, and turn-on time, t was far smaller than turn-off time T-t.Compare with the standby power of prior art, the standby power of exemplary embodiments approximately is 1/1000 of a present minimum standby power.
More than provided the present invention at typical electrical equipment such as electromagnetic oven, micro-wave oven, range hood, water heater and the embodiment that in computer and system thereof, uses, for as televisor, video disc player, printer, power supply adaptor, standby saver, refrigerator, air conditioner, electronic apparatuss such as disinfection cabinet and some small household electrical appliances are suitable for equally.Can expect those technical skilled personnel under the situation of principle of the present invention and spirit, can make some in these embodiments and change that protection scope of the present invention is to be limited by claims and their condition of equivalent.
Claims (10)
1, a kind of little standby power control device is characterized in that it comprises:
Power supply unit can be operated in standby mode, comprises power conversion unit and energy storage filter capacitor, the AC alternating voltage conversion of input can be output as DC standby voltage V
SBWith the DC DC voltage;
The Opportunity awaiting control for linear unit, can be operated in standby mode, its control output end connects the AC ac input end of power supply unit, its signal input part connects the signal output part of standby signal unit, receive the standby signal that the standby signal unit sends when standby mode, the AC alternating current input power supplying of control power supply unit periodically turns on and off;
The standby signal unit can be operated in standby mode, the standby voltage V of its power end and power supply unit
SBEnd connects, and its signal output part is connected with the Opportunity awaiting control for linear unit, sends to the Opportunity awaiting control for linear unit when entering standby mode in system and turns on and off signal.
2, device as claimed in claim 1 is characterized in that:
Described Opportunity awaiting control for linear unit comprises rectifier bridge, field effect transistor and photoelectrical coupler;
The ac input end of rectifier bridge is as the control output end, dc output end is connected with source electrode with the field effect transistor drain electrode, fet gate is connected with the phototriode pipe collector of photoelectrical coupler, and the phototriode of photoelectrical coupler receives the light signal that the photodiode from the standby signal unit sends as signal input part.
3, device as claimed in claim 2 is characterized in that:
Described Opportunity awaiting control for linear unit also comprises resistance, transistor and Zener diode, one end of resistance is connected with the node of field effect transistor drain electrode, the other end is connected with the node of fet gate, transistor collector is connected with the node of the phototriode pipe collector of photoelectrical coupler, the phototriode emitter of its base stage and photoelectrical coupler connects to form complex pipe, its emitter is connected with the node of field effect transistor drain electrode, the Zener diode negative electrode is connected with the node of fet gate, and its anode is connected with the node of field effect transistor drain electrode.
4, device as claimed in claim 1 is characterized in that:
Described standby signal unit comprises a voltage detecting circuit and photoelectrical coupler, the V of voltage detecting circuit
DdDetect standby voltage V as detecting input end
SBWhether reach set upper limit and lower limit, its output terminal Out drives as the standby signal of the photodiode output respective cycle of the photoelectrical coupler of standby signal cell signal output terminal and pulsewidth and disconnects and connection for the AC AC power of Opportunity awaiting control for linear unit controls power supply unit.
5, device as claimed in claim 4 is characterized in that:
Described standby signal unit also comprises transistor and resistance, transistorized base stage is connected with the output terminal of voltage detecting circuit by resistance, its collector is connected with the photodiode of photoelectrical coupler by resistance, the V of transistorized emitter and voltage detecting circuit
SsConnect as the ground end, to be the photodiode that drives photoelectrical coupler by resistance, transistor be transferred to standby signal to the Opportunity awaiting control for linear unit voltage detecting circuit.
6, device as claimed in claim 1 is characterized in that:
Voltage detecting circuit in the described standby signal circuit also can be substituted by pulse signal generation circuit, pulse generating circuit can be realized single-chip microcomputer or be realized that by logical circuit the pulsewidth t of the standby signal that it sends and period T should be able to make the DC voltage V of readiness control circuit control power circuit by microprocessor
SBIn set upper limit and lower range, change.
7, a kind of little standby power control method of system, this device has the power supply unit that the AC alternating voltage of input is converted to the DC DC voltage when system and described device enter standby mode, can turn on and off the Opportunity awaiting control for linear unit of power supply unit input end AC AC power, send the standby signal unit that turns on and off signal to the Opportunity awaiting control for linear unit, wherein the method comprising the steps of:
When system and described device are operated in standby mode, the Opportunity awaiting control for linear unit is subjected to the control of standby signal unit, the alternating current input power supplying of energized unit, make its shutoff through short time t, make its connection again through long-time T-t again, through short time t it is turn-offed again, periodically turn on and off the alternating current input power supplying of power supply unit like this according to pulsewidth t and period T, repeat this step.
8, method as claimed in claim 7 is characterized in that also comprising step:
When system and described device are operated in standby mode, the AC alternating current input power supplying of energized unit, Opportunity awaiting control for linear unit, power supply unit gets electric, gives its inner energy storage filter capacitor makeup energy, DC standby voltage V
SBRise rapidly;
Reach in limited time through short time t voltage, standby signal unit output shutdown signal is given Opportunity awaiting control for linear unit, the AC AC power of Opportunity awaiting control for linear unit power down unit;
Energy storage filter capacitor in the power supply unit continues to keep the standby electricity consumption, standby voltage V
SBSlowly descend;
Reach down in limited time through long-time T-t voltage, standby signal unit output connection signal is given Opportunity awaiting control for linear unit, the AC AC power of energized unit, Opportunity awaiting control for linear unit, DC standby voltage V
SBRise rapidly;
Pass through short time t standby voltage V again
SBReach the upper limit rapidly, the standby signal unit is exported shutdown signal again and is given Opportunity awaiting control for linear unit, the AC AC power of Opportunity awaiting control for linear unit power down unit;
It is the standby signal of t that the standby signal unit sends pulse width by period T to the Opportunity awaiting control for linear unit, standby voltage V
SBCyclical variation between upper and lower bound thereupon repeats above-mentioned steps.
9, method as claimed in claim 8 is characterized in that also comprising step:
Voltage detecting circuit in the standby signal unit detects standby voltage V
SBWhen reaching the release voltage (Release Voltage) that the upper limit promptly reaches voltage detecting circuit, voltage detecting circuit output high level and the photodiode conducting by resistance and transistor controls photoelectrical coupler are sent cut-off signals to the Opportunity awaiting control for linear unit;
Voltage detecting circuit in the standby signal unit detects standby voltage V
SBWhen reaching the detection voltage (Detection Voltage) that lower limit promptly reaches voltage detecting circuit, voltage detecting circuit output low level and the photodiode by resistance and transistor controls photoelectrical coupler end, and send connection signal to the Opportunity awaiting control for linear unit.
10, method as claimed in claim 8 is characterized in that also comprising step: for standby signal is the device that is produced by microprocessor or logical circuit, and the generation of standby signal is according to DC standby voltage V
SBThe required time of rising in standby mode and dropping to upper and lower bound writes the standby signal program of microprocessor or adjusts the parameter of logical circuit, guarantees that standby signal pulse width t and the period T sent when standby mode reach requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510055250 CN1834829A (en) | 2005-03-17 | 2005-03-17 | Micropower stand-by controller and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510055250 CN1834829A (en) | 2005-03-17 | 2005-03-17 | Micropower stand-by controller and method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN1834829A true CN1834829A (en) | 2006-09-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510055250 Pending CN1834829A (en) | 2005-03-17 | 2005-03-17 | Micropower stand-by controller and method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101606319B (en) * | 2006-12-28 | 2012-06-20 | 日本电气株式会社 | Semiconductor integrated circuit device and power supply voltage control system |
| CN102752563A (en) * | 2011-04-19 | 2012-10-24 | 联昌电子企业股份有限公司 | Standby circuit and display device |
| CN104168679A (en) * | 2013-05-17 | 2014-11-26 | 美的集团股份有限公司 | Induction cooker and induction cooker discharge method |
| TWI595801B (en) * | 2015-08-05 | 2017-08-11 | 三菱電機股份有限公司 | Optical module |
-
2005
- 2005-03-17 CN CN 200510055250 patent/CN1834829A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101606319B (en) * | 2006-12-28 | 2012-06-20 | 日本电气株式会社 | Semiconductor integrated circuit device and power supply voltage control system |
| CN102752563A (en) * | 2011-04-19 | 2012-10-24 | 联昌电子企业股份有限公司 | Standby circuit and display device |
| CN104168679A (en) * | 2013-05-17 | 2014-11-26 | 美的集团股份有限公司 | Induction cooker and induction cooker discharge method |
| CN104168679B (en) * | 2013-05-17 | 2016-02-10 | 美的集团股份有限公司 | Electromagnetic oven and charging method thereof |
| TWI595801B (en) * | 2015-08-05 | 2017-08-11 | 三菱電機股份有限公司 | Optical module |
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