CN203745837U - Instrument and meter micro-power consumption circuit - Google Patents
Instrument and meter micro-power consumption circuit Download PDFInfo
- Publication number
- CN203745837U CN203745837U CN201420086094.4U CN201420086094U CN203745837U CN 203745837 U CN203745837 U CN 203745837U CN 201420086094 U CN201420086094 U CN 201420086094U CN 203745837 U CN203745837 U CN 203745837U
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- instrument
- microcontroller
- meter
- voltage stabilizer
- power consumption
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Abstract
The utility model discloses an instrument and meter micro-power consumption circuit, which comprises a microcontroller, a voltage stabilizer, a clock chip, an MOS tube and an electronic switch circuit, wherein the voltage stabilizer, the clock chip and the electronic switch circuit are respectively connected with the microcontroller, a source of the MOS tube is connected with a power supply, a grid is controlled to be connected with the microcontroller, and a drain is respectively connected with a voltage output end and a power supply input pin of the voltage stabilizer. The instrument and meter micro-power consumption circuit adopts a PCF8563 clock chip to awake the microcontroller MSP430F249, reduces the static sleep power consumption of the system, realizes the switching on/off of the power supply of other electronic element through the MOS tube and the voltage stabilizer TPS78228, cuts off the power of non-working modules completely, and achieves the integral effects of realizing micro power consumption and prolonging the service life of the battery.
Description
Technical field
the utility model relates to electronic circuit field, specifically a kind of instrument and meter micropower circuit.
Background technology
development along with electronic technology, the function of instrument and meter from strength to strength, a lot of instrument and meters have several operational modules, at present, instrument and meter mostly adopts powered battery, in the course of the work, does not have the in harness module also can the certain electric weight of loss, therefore, can greatly shorten the serviceable life of battery; As user, hope is in the situation that meeting other function needs, the quiescent dissipation of instrument and meter is more low better, the low-power consumption of instrument and meter also becomes its design needs one of emphasis factors of considering, and the current method that realizes low power dissipation design is generally to use the electronic devices and components of low-power consumption, device is operated under its low-power consumption mode, although reduced power consumption, also can produces certain power consumption.
Utility model content
The shortcoming existing in order to overcome above-mentioned prior art, the purpose of this utility model is to provide a kind of circuit that makes instrument and meter realize micro-power consumption.
In order to address the above problem, the utility model is by the following technical solutions: a kind of instrument and meter micropower circuit, it is characterized in that, comprise microcontroller, voltage stabilizer, clock chip, metal-oxide-semiconductor and electronic switching circuit, described voltage stabilizer, clock chip and electronic switching circuit are connected with microcontroller respectively, the source electrode of described metal-oxide-semiconductor connects power supply, the controlled connection microcontroller of grid, and drain electrode connects respectively the power supply input pin of voltage output end and voltage stabilizer.
Described electronic switching circuit comprises button S1, button S2, resistance R 1 and resistance R 2, and described button S1 and button S2 are connected on the I/O pin of microcontroller, then by pull-up resistor R1 and resistance R 2, receive on power supply respectively.
Preferably, described clock chip is PCF8563 chip.
Preferably, described voltage stabilizer is TPS78228 chip.
Preferably, described microcontroller is MSP430F249 single-chip microcomputer.
The beneficial effects of the utility model are: it,, by adopting PCF8563 clock chip to wake microcontroller MSP430F249 up, reduces the static dormancy power consumption of system; By button, control metal-oxide-semiconductor and voltage stabilizer TPS78228, realized turning on and off of other electronic devices and components power supplys, make the not thorough power-off of operational module, reached integral body and realized micro-power consumption, extend the effect of battery.
Accompanying drawing explanation
below in conjunction with drawings and Examples, the utility model is described further:
Fig. 1 is circuit diagram of the present utility model.
Embodiment
As shown in Figure 1, a kind of instrument and meter micropower circuit of an embodiment of the present utility model, it is characterized in that, comprise microcontroller, voltage stabilizer, clock chip, metal-oxide-semiconductor and electronic switching circuit, described microcontroller is MSP430F249 single-chip microcomputer, described voltage stabilizer is TPS78228 chip, described clock chip is PCF8563 chip, described metal-oxide-semiconductor is PMOS pipe, between the drain D of PMOS pipe and source S, be provided with parasitic diode, the INT pin of clock chip PCF8563 is connected with the P1.0 pin of MSP430F249 single-chip microcomputer, the P4.3 pin of MSP430F249 single-chip microcomputer connects the EN pin of voltage stabilizer TPS78228 chip, the P4.4 pin of MSP430F249 single-chip microcomputer connects the grid G of PMOS pipe, the source S of described PMOS pipe connects power supply, between the grid G of PMOS pipe and source S, connect a resistance R 4, drain D meets respectively the power supply input pin VIN of voltage output end DVCC and TPS78228 chip.
Described electronic switching circuit comprises button S1, button S2, resistance R 1 and resistance R 2, and described button S1 and button S2 are connected on the I/O pin of microcontroller, then by pull-up resistor R1 and resistance R 2, receive on power supply respectively.
When instrument is during in dormant state, MSP430F249 single-chip microcomputer enters extremely low power dissipation state, and when needs are worked, extremely low power dissipation clock chip PCF8563 learns that according to external signal instrument and meter will work, then to MSP430F249 single-chip microcomputer, send look-at-me, wake MSP430F249 single-chip microcomputer up; Then manual control button S1 and S2, the S1 that pushes button, PMOS manages conducting, and DVCC outward element obtains electric, the S2 that pushes button, MSP430F249 single-chip microcomputer sends signal to TPS78228 chip, and the VOUT pin outward element of TPS78228 chip obtains electric; Clock chip PCF8563 and MSP430F249 single-chip microcomputer are low-power chip, with sheet, outer extremely low power dissipation clock chip PCF8563 controls waking up of MSP430F249 single-chip microcomputer, reduced the static dormancy power consumption of system, and then needed the components and parts of work to power by the selection of button S1 and button S2, do not need the direct power-off of components and parts of work, its some electric energy is not also wasted, and it is down to minimum by the static dormancy power consumption of system and work power consumption simultaneously.
Claims (5)
1. an instrument and meter micropower circuit, it is characterized in that, comprise microcontroller, voltage stabilizer, clock chip, metal-oxide-semiconductor and electronic switching circuit, described voltage stabilizer, clock chip and electronic switching circuit are connected with microcontroller respectively, the source electrode of described metal-oxide-semiconductor connects power supply, the controlled connection microcontroller of grid, drain electrode connects respectively the power supply input pin of voltage output end and voltage stabilizer.
2. instrument and meter micropower circuit according to claim 1, it is characterized in that, described electronic switching circuit comprises button S1, button S2, resistance R 1 and resistance R 2, described button S1 and button S2 are connected on the I/O pin of microcontroller, then by pull-up resistor R1 and resistance R 2, receive on power supply respectively.
3. instrument and meter micropower circuit according to claim 1, is characterized in that, described clock chip is PCF8563 chip.
4. instrument and meter micropower circuit according to claim 1, is characterized in that, described voltage stabilizer is TPS78228 chip.
5. instrument and meter micropower circuit according to claim 1, is characterized in that, described microcontroller is MSP430F249 single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420086094.4U CN203745837U (en) | 2014-02-28 | 2014-02-28 | Instrument and meter micro-power consumption circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420086094.4U CN203745837U (en) | 2014-02-28 | 2014-02-28 | Instrument and meter micro-power consumption circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203745837U true CN203745837U (en) | 2014-07-30 |
Family
ID=51345616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420086094.4U Expired - Fee Related CN203745837U (en) | 2014-02-28 | 2014-02-28 | Instrument and meter micro-power consumption circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203745837U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112332664A (en) * | 2020-10-20 | 2021-02-05 | 石家庄通合电子科技股份有限公司 | Low-power-consumption standby circuit method for power battery monitoring power supply of pure electric vehicle |
-
2014
- 2014-02-28 CN CN201420086094.4U patent/CN203745837U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112332664A (en) * | 2020-10-20 | 2021-02-05 | 石家庄通合电子科技股份有限公司 | Low-power-consumption standby circuit method for power battery monitoring power supply of pure electric vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Guo Xungong Inventor after: Guo Zifeng Inventor before: Guo Xungong Inventor before: Cao Hongyi |
|
| COR | Change of bibliographic data | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160411 Address after: 256209, Han Zhen, Zouping County, Binzhou, Shandong Patentee after: SHR AUTOMATION TECHNOLOGY CO., LTD. Address before: 256209 Shandong city of Binzhou province Zouping County Han town resident Patentee before: Shandong Changrun Science and Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140730 Termination date: 20180228 |