CN204065718U - Micro control system electric power management circuit - Google Patents
Micro control system electric power management circuit Download PDFInfo
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- CN204065718U CN204065718U CN201420536205.7U CN201420536205U CN204065718U CN 204065718 U CN204065718 U CN 204065718U CN 201420536205 U CN201420536205 U CN 201420536205U CN 204065718 U CN204065718 U CN 204065718U
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Abstract
The utility model discloses a kind of micro control system electric power management circuit, comprise power input interface, Voltage stabilizing module and power output interface, it is characterized in that: between power input interface and the input end of Voltage stabilizing module, be serially connected with the first electronic switch, the output termination power output interface of this Voltage stabilizing module, this power output interface provides power supply to microcontroller, the drive end of the first electronic switch is connected with power input interface through resistance R26, the drive end of this first electronic switch is also connected with one end of resistance R27, the other end of resistance R27 is respectively through a mechanical switch and the second electronic switch ground connection, described second electronic switch receives the power supply maintenance signal that microcontroller exports.Its effect is: circuit structure is simple, and it is convenient to control, and this circuit can allow whole micro control system powered down sleep, mechanical switch can be utilized manually to wake up, and the power supply receiving microcontroller upon awakening maintains signal, system energy consumption is low, effectively can extend the power supply cruising time of micro control system.
Description
Technical field
The utility model relates to a kind of power circuit, specifically, is a kind of micro control system electric power management circuit.
Background technology
Usually all remain duty after existing micro control system powers on, especially for the micro control system with wireless communication module, because system remains wireless transmit or wireless receiving state for a long time, system energy consumption is higher.
For above-mentioned defect, people have devised many micro controller systems with park mode, as namely Chinese patent 201210151322.7 discloses a kind of method and the realizing circuit thereof that realize controller of whole electric vehicle dormancy and awakening mode switching.
But prior art often all only takes power-off to control for part of module, appoint and so need a controller job carry out timing or wake detection up, energy saving of system is limited.
Utility model content
In order to overcome above-mentioned defect, the utility model provides micro control system electric power management circuit, can realize whole system dormancy, and by manually waking up, saves system energy consumption, maintains the cruising time of power supply.
To achieve these goals, the concrete technical scheme that adopts of the utility model is as follows:
A kind of micro control system electric power management circuit, comprise power input interface, Voltage stabilizing module and power output interface, its key is: be serially connected with the first electronic switch between described power input interface and the input end of Voltage stabilizing module, power output interface described in the output termination of this Voltage stabilizing module, this power output interface provides power supply to microcontroller, the drive end of described first electronic switch is connected with power input interface through resistance R26, the drive end of this first electronic switch is also connected with one end of resistance R27, the other end of resistance R27 is respectively through a mechanical switch and the second electronic switch ground connection, described second electronic switch receives the power supply maintenance signal that microcontroller exports.
Based on above-mentioned design, in system hibernates state, the first electronic switch disconnects, and Voltage stabilizing module must not be electric, and microcontroller does not work; Now need by mechanical switch triggerable electronic R27 ground connection, it is made to form a bleeder circuit by resistance R26 and resistance R27, trigger the first electronic switch conducting, Voltage stabilizing module obtains electric rear microcontroller and starts working, export a power supply maintenance signal by microcontroller and trigger the second electronic switch conducting, keep resistance R27 ground connection, when the power supply that microcontroller exports maintains blackout, again can enter dormant state.
As further describing, described first electronic switch is PNP triode Q11, described power input interface is connected on the emitter of PNP triode Q11, the collector of this PNP triode Q11 connects the input end of described Voltage stabilizing module, the base stage connecting described resistance R26, PNP triode Q11 between the emitter and base stage of described PNP triode Q11 is connected with one end of resistance R27.As equivalent variations, also can select NPN triode here, as long as change the connected mode of collector and emitter.
In order to keep power supply one-way transmission, diode D13 is serially connected with between described power input interface and the emitter of PNP triode Q11, between the collector and the input end of Voltage stabilizing module of PNP triode Q11, be serially connected with diode D9, between resistance R27 and mechanical switch, be also serially connected with diode D10.
For micro control system with bluetooth module or other wireless communication module, because its working power is different from microcontroller, therefore, the output terminal of described Voltage stabilizing module is connected with the source electrode of metal-oxide-semiconductor Q10, the drain electrode of metal-oxide-semiconductor Q10 is as second source output interface, between the source electrode and grid of metal-oxide-semiconductor Q10, be connected with resistance R18, by second source output interface to bluetooth module or other wireless communication module power supply, but its on/off situation is synchronous with microcontroller.
For the ease of the operation of microcontroller dormancy program, the grid of described metal-oxide-semiconductor Q10 is as a look-at-me output terminal, for inputting a look-at-me to microcontroller, a look-at-me can be saved when microcontroller is started working, by the timing mechanism of inside, can judge that when removing power supply maintains signal.
More stable in order to allow power supply export, the input end and output terminal of described Voltage stabilizing module are all connected with filter capacitor.
For some micro control system, usually need to utilize mechanical switch to carry out the switch control rule of miscellaneous equipment, therefore, described mechanical switch also accesses microcontroller, for microcontroller input switch signal through resistance R30.
As preferably, described mechanical switch is pushbutton switch.
Further, described second electronic switch is NPN triode Q12, the collector of this NPN triode Q12 is connected with resistance R27, the grounded emitter of this NPN triode Q12, the power supply that the base stage of NPN triode Q12 receives microcontroller output through a current-limiting resistance maintains signal, between the base stage and emitter of NPN triode Q12, be also connected with resistance R38.
In conjunction with concrete chip type selecting, described power input interface connects 12V direct supply, and this 12V direct supply is converted to 3.3V direct current through described Voltage stabilizing module and exports, and this 3.3V direct current exports powers for microcontroller.
Remarkable result of the present utility model is:
Circuit structure is simple, and it is convenient to control, and this circuit can allow whole micro control system powered down sleep, mechanical switch can be utilized manually to wake up, and the power supply receiving microcontroller upon awakening maintains signal, system energy consumption is low, effectively can extend the power supply cruising time of micro control system.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model and principle of work are described in further detail.
As shown in Figure 1, a kind of micro control system electric power management circuit, comprise power input interface, Voltage stabilizing module and power output interface, the first electronic switch is serially connected with between described power input interface and the input end of Voltage stabilizing module, power output interface described in the output termination of this Voltage stabilizing module, this power output interface provides power supply to microcontroller, the drive end of described first electronic switch is connected with power input interface through resistance R26, the drive end of this first electronic switch is also connected with one end of resistance R27, the other end of resistance R27 is respectively through a mechanical switch and the second electronic switch ground connection, described second electronic switch receives the power supply maintenance signal that microcontroller exports.
As can be seen from Figure 1, power input interface connects 12V direct supply, first electronic switch is PNP triode Q11, power input interface is connected on the emitter of PNP triode Q11 through diode D13, the collector of this PNP triode Q11 connects the input end of described Voltage stabilizing module through diode D9, contact resistance R26 between the emitter and base stage of PNP triode Q11, the base stage of PNP triode Q11 is connected with one end of resistance R27, diode D10 is also serially connected with between resistance R27 and mechanical switch, here mechanical switch is pushbutton switch, this mechanical switch also accesses microcontroller through resistance R30, for to microcontroller input switch signal, BUTTON pin shown in figure, the input end and output terminal of described Voltage stabilizing module are all connected with filter capacitor, C17 shown in figure, C15, C18 and C7, 12V direct supply is converted to 3.3V direct current through described Voltage stabilizing module and exports, it is 3V3 pin shown in figure, this 3.3V direct current exports powers for microcontroller.
It can also be seen that from Fig. 1, second electronic switch is NPN triode Q12, the collector of this NPN triode Q12 is connected with resistance R27, the grounded emitter of this NPN triode Q12, the power supply that the base stage of NPN triode Q12 receives microcontroller output through a current-limiting resistance maintains signal, be KEEP pin shown in figure, between the base stage and emitter of NPN triode Q12, be also connected with resistance R38.
In order to meet the power supply of other chip module, the output terminal of described Voltage stabilizing module is connected with the source electrode of metal-oxide-semiconductor Q10, the drain electrode of metal-oxide-semiconductor Q10 is as second source output interface, resistance R18 is connected with between the source electrode and grid of metal-oxide-semiconductor Q10, as seen in Figure 1, the DC converting of 3.3V is that 3V exports by metal-oxide-semiconductor Q10, can for bluetooth module or the work of other wireless communication module.
For the ease of microcontroller implementation sleep management, the grid of described metal-oxide-semiconductor Q10, as a look-at-me output terminal, for inputting a look-at-me to microcontroller, is BTPWR pin shown in figure.
Principle of work of the present utility model is:
Utilize the first electronic switch to control the power supply input of Voltage stabilizing module, under system hibernates state, the first electronic switch disconnects, and microcontroller and other the equal power-off of chip module, quit work; Now need by pressing mechanical switch, trigger resistance R27 ground connection, for NPN triode Q11, resistance R27 one end ground connection, the other end can produce a high level and trigger emitter and collector conducting, and now Voltage stabilizing module obtains electric, microcontroller work;
When microcontroller obtains electric work, receive the look-at-me of BTPWR pin input simultaneously, utilize inner dormancy mechanism, first export a power supply by KEEP pin and maintain signal, keep resistance R27 ground connection, when system does not still have other to operate in the given time, microcontroller can maintain signal from dynamic circuit breaker power down source, NPN triode Q11 disconnects, system cut-off, thus the object reaching energy saving of system.
Finally it should be noted that, above embodiment is only in order to illustrate the utility model best-of-breed technology scheme but not restriction technologies scheme, above-mentioned word is explained in detail the utility model with reference to preferred embodiment, although be not described in detail the dormancy mechanism of microcontroller, but be to be understood that as those of ordinary skill in the art, above-mentioned technology is all mature technologies, need not repeat at this, and the amendment that also can carry out technical solutions of the utility model of those skilled in the art or equivalently to replace, the aim of the technical program and scope can not be departed from, all should be encompassed in the middle of the utility model right.
Claims (10)
1. a micro control system electric power management circuit, comprise power input interface, Voltage stabilizing module and power output interface, it is characterized in that: between described power input interface and the input end of Voltage stabilizing module, be serially connected with the first electronic switch, power output interface described in the output termination of this Voltage stabilizing module, this power output interface provides power supply to microcontroller, the drive end of described first electronic switch is connected with power input interface through resistance R26, the drive end of this first electronic switch is also connected with one end of resistance R27, the other end of resistance R27 is respectively through a mechanical switch and the second electronic switch ground connection, described second electronic switch receives the power supply maintenance signal that microcontroller exports.
2. micro control system electric power management circuit according to claim 1, it is characterized in that: described first electronic switch is PNP triode Q11, described power input interface is connected on the emitter of PNP triode Q11, the collector of this PNP triode Q11 connects the input end of described Voltage stabilizing module, the base stage connecting described resistance R26, PNP triode Q11 between the emitter and base stage of described PNP triode Q11 is connected with one end of resistance R27.
3. micro control system electric power management circuit according to claim 2, it is characterized in that: between described power input interface and the emitter of PNP triode Q11, be serially connected with diode D13, between the collector and the input end of Voltage stabilizing module of PNP triode Q11, be serially connected with diode D9, between resistance R27 and mechanical switch, be also serially connected with diode D10.
4. micro control system electric power management circuit according to claim 1, it is characterized in that: the output terminal of described Voltage stabilizing module is connected with the source electrode of metal-oxide-semiconductor Q10, the drain electrode of metal-oxide-semiconductor Q10, as second source output interface, is connected with resistance R18 between the source electrode and grid of metal-oxide-semiconductor Q10.
5. micro control system electric power management circuit according to claim 4, is characterized in that: the grid of described metal-oxide-semiconductor Q10 as a look-at-me output terminal, for inputting a look-at-me to microcontroller.
6. micro control system electric power management circuit according to claim 1, is characterized in that: on the input end and output terminal of described Voltage stabilizing module, be all connected with filter capacitor.
7. micro control system electric power management circuit according to claim 1, is characterized in that: described mechanical switch also accesses microcontroller, for microcontroller input switch signal through resistance R30.
8. the micro control system electric power management circuit according to claim 1 or 7, is characterized in that: described mechanical switch is pushbutton switch.
9. according to the arbitrary described micro control system electric power management circuit of claim 1-7, it is characterized in that: described second electronic switch is NPN triode Q12, the collector of this NPN triode Q12 is connected with resistance R27, the grounded emitter of this NPN triode Q12, the power supply that the base stage of NPN triode Q12 receives microcontroller output through a current-limiting resistance maintains signal, between the base stage and emitter of NPN triode Q12, be also connected with resistance R38.
10. micro control system electric power management circuit according to claim 9, it is characterized in that: described power input interface connects 12V direct supply, this 12V direct supply is converted to 3.3V direct current through described Voltage stabilizing module and exports, and this 3.3V direct current exports powers for microcontroller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420536205.7U CN204065718U (en) | 2014-09-17 | 2014-09-17 | Micro control system electric power management circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420536205.7U CN204065718U (en) | 2014-09-17 | 2014-09-17 | Micro control system electric power management circuit |
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| CN204065718U true CN204065718U (en) | 2014-12-31 |
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| CN201420536205.7U Active CN204065718U (en) | 2014-09-17 | 2014-09-17 | Micro control system electric power management circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104682352A (en) * | 2015-03-05 | 2015-06-03 | 深圳市九洲电器有限公司 | Improved power management device |
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2014
- 2014-09-17 CN CN201420536205.7U patent/CN204065718U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104682352A (en) * | 2015-03-05 | 2015-06-03 | 深圳市九洲电器有限公司 | Improved power management device |
| CN104682352B (en) * | 2015-03-05 | 2017-06-16 | 深圳市九洲电器有限公司 | A kind of improved electric power controller |
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Effective date of registration: 20160308 Address after: 400010 B building 181, Minsheng Road, Yuzhong District, Chongqing, 10-6 Patentee after: CHONGQING TESILIAN INTELLIGENCE TECHNOLOGY CO., LTD. Address before: 400010 No. 8, No. 47, 28, Minquan Road, Yuzhong District, Chongqing Patentee before: CHONGQING TERMINUS TECHNOLOGY CO., LTD. |