CN107797641A - Power supply control method and control circuit for processor and electronic equipment - Google Patents
Power supply control method and control circuit for processor and electronic equipment Download PDFInfo
- Publication number
- CN107797641A CN107797641A CN201710980046.8A CN201710980046A CN107797641A CN 107797641 A CN107797641 A CN 107797641A CN 201710980046 A CN201710980046 A CN 201710980046A CN 107797641 A CN107797641 A CN 107797641A
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- processor
- power supply
- power
- control
- trigger signal
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000001960 triggered effect Effects 0.000 claims description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005059 dormancy Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/3243—Power saving in microcontroller unit
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Power Sources (AREA)
Abstract
The invention discloses a power supply control method and a control circuit for a processor and electronic equipment comprising the control circuit, wherein the method comprises the following steps: a triggering step, which is used for generating a triggering signal capable of starting to supply power to the processor; a power supply control step of receiving power supply to the processor by using the generated trigger signal; and a locking step of locking the power supply to the processor by using the control signal output by the processor. According to the power supply control method and the power supply control circuit for the processor and the electronic equipment comprising the power supply control circuit, the processor chip does not consume current in the shutdown state, the equipment can be started to work through external triggering, the equipment can be automatically shut down after the work is finished, and the endurance time of the equipment can be greatly prolonged.
Description
Technical field
The present invention relates to a kind of method for controlling power supply and control circuit, more particularly to a kind of power supply control for processor
Method processed and control circuit and the electronic equipment comprising the control circuit.
Background technology
At present, with processor chips in electronic equipment of various, such as MCU chip, although reducing itself as possible
Electric current comes the cruising time of extension device, but can not accomplish to be completely eliminated all the time, even if using external interrupt wakeup, also still such as
This.When the low-power consumption mode electric current of processor chips can not accomplish very little, power consumption can not be tolerated.Or work as external signal
Change can not be converted into external interrupt, and during the situation of change of the frequent monitoring peripheral hardware of needs, reduce power consumption and just more seem especially heavy
Will.
Therefore, it is necessary to a kind of method for controlling power supply and control circuit for processor, when equipment is in off-mode
Processor chips no current consumes, and and can makes equipment work immediately by external trigger, and can automatic shutdown after having worked, can
Greatly prolong the cruising time of equipment.
The content of the invention
A kind of the defects of the invention aims to overcome prior art to exist, there is provided power supply control for processor
Method and control circuit and the electronic equipment comprising the control circuit.In order to realize this purpose, the skill that the present invention is taken
Art scheme is as follows：
According to the first aspect of the embodiment of the present invention, there is provided a kind of method for controlling power supply for processor, including：Triggering step
Suddenly, the trigger signal powered to processor can be started for producing；Power supply control step, connected using caused trigger signal
Power supply to processor；And lock step, the power supply to processor is connected using the control signal locking of processor output.
According to one embodiment, the described method for controlling power supply for processor also includes deenergizing step, for locating
After managing device end-of-job, the power supply to processor is disconnected by changing the control signal of processor output.
According to further embodiment, in step is triggered, produced using passive device and by changing external environment condition tactile
Signal.
According to another embodiment, in the triggering step, using nfc coils and by the mobile phone brush nfc coils and
Produce trigger signal.
According to another embodiment, wherein the low high level exported by processor realizes that locking is connected to processor
Power and disconnect the power supply to processor.
According to the second aspect of the embodiment of the present invention, there is provided a kind of power-supplying circuit for processor, including：Triggering
Unit, the trigger signal powered to processor can be started for producing；Supply control unit, connect using caused trigger signal
Lead to the power supply of processor；And locking/power-off unit, connected using the control signal locking of processor output to processor
Power or disconnect the power supply to processor.
According to one embodiment, it is preferred that the trigger element includes nfc coils.
According to further embodiment, it is preferred that the supply control unit further comprises：Can be by the trigger signal
The switching transistor of control；And by switching transistor control, for connect/deenergization and processor feeder ear powered
Controlling transistor.
According to another embodiment, it is preferred that the locking/power-off unit includes：Processor；And power supply control is brilliant
Body pipe；The control pole of the control termination power supply control transistor of the processor of wherein exportable low high level controling signal.
According to the third aspect of the embodiment of the present invention, there is provided a kind of electronic equipment, including processor, additionally include according to
Power-supplying circuit described in second aspect of the embodiment of the present invention.
According to method for controlling power supply of the embodiment of the present invention for processor and control circuit and include control electricity
The electronic equipment on road, in off-mode, processor chips no current consumes, and and can makes equipment work immediately by external trigger
Make, and can automatic shutdown after having worked, the cruising time of equipment can be greatly prolonged.
It is specifically described below in conjunction with accompanying drawing and by embodiment to the present invention, wherein identical or essentially identical portion
Part is indicated using identical reference.
Brief description of the drawings
Fig. 1 is the schematic block diagram according to the power-supplying circuit for processor of one embodiment of the invention；
Fig. 2 is the schematic diagram according to the power-supplying circuit for processor of one embodiment of the invention；
Fig. 3 is the indicative flowchart according to the method for controlling power supply for processor of one embodiment of the invention；And
Fig. 4 is the flow chart according to the power supply control process of the power-supplying circuit for processor shown in Fig. 2.
Embodiment
As shown in figure 1, it is the schematic knot according to the power-supplying circuit for processor of one embodiment of the invention
Structure block diagram, including：Trigger element 100, supply control unit 102, and locking/power-off unit 104.Wherein trigger element 100
It can start the trigger signal powered to processor for producing；Trigger signal caused by the utilization of supply control unit 102 is connected
Power supply to processor；And locking/power-off unit 104 is connected to processor using the control signal locking of processor output
Power or disconnect the power supply to processor.
Usual user is when using the electronic product comprising processor, it is easy to the change of an external environment condition is brought, this
The change of external environment condition is converted into electric signal by sample can by a passive component, and makes the equipment in off-mode
Work immediately, worked rear automatic shutdown again, can greatly prolong the cruising time of equipment.
As shown in Fig. 2 it is the schematic diagram according to the power-supplying circuit for processor of one embodiment of the invention.Its
Middle trigger element 100 includes external signal and produces part, and it is passive device, can be by changing external environment condition（Such as electromagnetic wave）
It is set to produce electric signal.Preferably, in one embodiment, the passive device is a nfc coil U1, when use mobile phone brush
During the nfc coils, nfc coils produce induced voltage by the radiofrequency signal of mobile phone, and power supply control list is output to by U1 A pin
Member 102.
In one embodiment, supply control unit 102 is mainly made up of NPN transistor Q1 and PNP transistor Q2,
Wherein transistor Q1 control pole（That is base stage）B meets the output end of trigger element 100, transistor Q1 colelctor electrodes c by resistor R1
Power supply, transistor Q1 emitter es ground connection GND are connect by resistor R2；So that transistor Q1 is operated on off state, work as triggering
After unit 100 is triggered, when having voltage output, transistor Q1 is turned on；When the output voltage of trigger element 100 disappears, crystal
Pipe Q1 ends.
Wherein transistor Q2 is power supply control transistor, for making to connect or disconnect between power supply and processor feeder ear.
Transistor Q2 control poles（That is base stage）B meets transistor Q1 colelctor electrode c, and transistor Q2 emitter es connect power supply VCC, transistor Q2 collection
Electrode c connects the feeder ear of processor.When Q1 is turned on, Q1 colelctor electrode c is changed into low level, that is, Q2 base stage b is low electricity
It is flat, promote Q2 to turn on, Q2 colelctor electrode c output high level（Essentially VCC）, processor is worked on power.
In one embodiment, locking/power-off unit 104 includes processor IC and power supply control transistor Q2, wherein
The control terminal of the processor of exportable low high level controling signal is that pin 10 connects power supply control transistor by resistor R3
Control pole（That is base stage）b.After processor works, by the output low level of pin 10 to Q2 base stage b, self-locking is formed it into,
When now removing triggering level caused by external signal, processor can also be powered, and keep work.When processor has been handled
During the thing done, high level is exported by pin 10, and transistor Q2 is in nonconducting state, processor is cut off electricity
Source, with this come reach extend processor cruising time, avoid processor dormancy or low power consumpting state spent by electric current.
When needing processor to rework, again by external environment condition is changed, its trigger element is set to produce electric signal.
In the embodiment shown in Figure 2, although supply control unit 102 is shown as mainly including triode Q1 and Q2,
It is not precluded from that other switching devices, such as metal-oxide-semiconductor etc. can be used.In addition, processor includes but is not limited to MCU, PLC, monolithic
Machine etc..In addition, can be used for according to the power-supplying circuit of the embodiment of the present invention in the various electronic equipments comprising processor, it is right
This is it is readily appreciated by a person skilled in the art that will not be described here.
As shown in figure 3, it is the schematic stream according to the method for controlling power supply for processor of one embodiment of the invention
Cheng Tu, mainly include：Trigger step 300, power supply control step 302, and lock step 304；In other embodiments, may be used also
Including deenergizing step 306.Wherein trigger step 300 to be used to produce the trigger signal that can start to processor power supply, in a reality
Apply in example, using such as passive device of nfc coils and by changing external environment condition, such as by the mobile phone brush nfc coils, and
Produce trigger signal；In power supply control step 302, the power supply to processor is connected using caused trigger signal；Locking
Determine in step 304, the control signal exported using processor（Such as low level signal）The power supply to processor is connected in locking；With
And deenergizing step 306 is used for after processor end-of-job, by the control signal for changing processor output（Such as by low level
Signal is changed into high level signal）And disconnect the power supply to processor.
As shown in figure 4, it is the flow according to the power supply control process of the power-supplying circuit for processor shown in Fig. 2
Figure, after the flow of frame 400 starts, initially enter frame 402 and produce external electric signal i.e. trigger signal（That is step 300）；In frame 404
Triode Q1 is turned on, and is then turned in the triode Q2 of frame 406（That is step 302）；Then, work is started in the Micro-processor MCV of frame 408
Make, then export low level in the pin 10 of the Micro-processor MCV of frame 410, force Q2 constantly on（That is step 304）；Into frame
412 Micro-processor MCVs handle task, after the completion of the processing of the Micro-processor MCV task of frame 414, then in the microprocessor of frame 416
Device MCU pin 10 exports high level, is de-energized into the Micro-processor MCV of frame 418（That is step 306）.
Above by specific embodiment, the present invention is described, but the present invention is not limited to these specific implementations
Example.It will be understood by those skilled in the art that various modifications, equivalent substitution, change etc. can also be made to the present invention, such as will be upper
State in embodiment step or unit is divided into two or more steps or unit to realize, or on the contrary, by above-mentioned reality
The function of applying two or more steps in example or unit is placed in a step or unit to realize.But these are converted
, all should be within protection scope of the present invention without departing from the spirit of the present invention.In addition, present specification and claims
Some terms used in book, it is not limitation, it is only for be easy to describe.In addition, " the implementation described in above many places
Example ", " another embodiment " etc., represent different embodiments, naturally it is also possible to which its all or part is incorporated in into a reality
Apply in example.
Claims (10)
- A kind of 1. method for controlling power supply for processor, it is characterised in that including：Step is triggered, can start the trigger signal powered to processor for producing；Power supply control step, the power supply to processor is connected using caused trigger signal；AndLock step, the power supply to processor is connected using the control signal locking of processor output.
- 2. it is used for the method for controlling power supply of processor as claimed in claim 1, it is characterised in that further comprising the steps of：Deenergizing step, for after processor end-of-job, being disconnected by changing the control signal of processor output to processing The power supply of device.
- 3. it is used for the method for controlling power supply of processor as claimed in claim 1 or 2, it is characterised in that：In step is triggered, profit Trigger signal is produced with passive device and by changing external environment condition.
- 4. it is used for the method for controlling power supply of processor as claimed in claim 3, it is characterised in that：In the triggering step, Trigger signal is produced using nfc coils and by the mobile phone brush nfc coils.
- 5. it is used for the method for controlling power supply of processor as claimed in claim 1 or 2, it is characterised in that：Wherein pass through processor The low high level of output, which is realized, locks the power supply connected to processor and the power supply disconnected to processor.
- A kind of 6. power-supplying circuit for processor, it is characterised in that including：Trigger element, the trigger signal powered to processor can be started for producing；Supply control unit, the power supply to processor is connected using caused trigger signal；AndLocking/power-off unit, connect the power supply to processor using the control signal locking of processor output or disconnect to processing The power supply of device.
- 7. it is used for the power-supplying circuit of processor as claimed in claim 6, it is characterised in that the trigger element includes： Nfc coils.
- 8. it is used for the power-supplying circuit of processor as claimed in claim 6, it is characterised in that the supply control unit enters One step includes：The switching transistor that can be controlled by the trigger signal；AndBy switching transistor control, for connecting/power supply control the transistor of deenergization and processor feeder ear.
- 9. it is used for the power-supplying circuit of processor as claimed in claim 6, it is characterised in that the locking/power-off unit Including：Processor；AndPower supply control transistor；The control pole of the control termination power supply control transistor of the processor of wherein exportable low high level controling signal.
- 10. a kind of electronic equipment, including processor, it is characterised in that：Also include any one of claims 6 to 9 Power-supplying circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710980046.8A CN107797641A (en) | 2017-10-19 | 2017-10-19 | Power supply control method and control circuit for processor and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710980046.8A CN107797641A (en) | 2017-10-19 | 2017-10-19 | Power supply control method and control circuit for processor and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107797641A true CN107797641A (en) | 2018-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710980046.8A Pending CN107797641A (en) | 2017-10-19 | 2017-10-19 | Power supply control method and control circuit for processor and electronic equipment |
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| Country | Link |
|---|---|
| CN (1) | CN107797641A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2829948A1 (en) * | 2013-07-25 | 2015-01-28 | Samsung Electronics Co., Ltd | Electronic apparatus and power controlling method |
| CN204463019U (en) * | 2014-12-30 | 2015-07-08 | 环旭电子股份有限公司 | A kind of power-supplying circuit |
| CN105204601A (en) * | 2015-09-16 | 2015-12-30 | 江苏辰汉电子科技有限公司 | System automatic power-on circuit and method |
-
2017
- 2017-10-19 CN CN201710980046.8A patent/CN107797641A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2829948A1 (en) * | 2013-07-25 | 2015-01-28 | Samsung Electronics Co., Ltd | Electronic apparatus and power controlling method |
| CN204463019U (en) * | 2014-12-30 | 2015-07-08 | 环旭电子股份有限公司 | A kind of power-supplying circuit |
| CN105204601A (en) * | 2015-09-16 | 2015-12-30 | 江苏辰汉电子科技有限公司 | System automatic power-on circuit and method |
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Application publication date: 20180313 |
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| RJ01 | Rejection of invention patent application after publication |