CN201289453Y - Soft closedown circuit - Google Patents
Soft closedown circuit Download PDFInfo
- Publication number
- CN201289453Y CN201289453Y CNU2008201547133U CN200820154713U CN201289453Y CN 201289453 Y CN201289453 Y CN 201289453Y CN U2008201547133 U CNU2008201547133 U CN U2008201547133U CN 200820154713 U CN200820154713 U CN 200820154713U CN 201289453 Y CN201289453 Y CN 201289453Y
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- triode
- resistance
- resistor
- diode
- processor mcu
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Abstract
The utility model relates to a soft-off circuit of a viscometer, which comprises a triode Q1, a triode Q2, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a diode D1, a diode D2, a button S1 and a processor MCU, wherein, e electrode of the triode Q1 is connected with an input power supply VIN and one end of the resistor R1; the other end of the resistor R1 is connected with c electrode of triode Q2, D1 cathode of diode D1 and one end of resistor R2; b electrode of the triode Q1 is connected with the other end of the resistor R2; c electrode of triode Q1 is connected with one end of the resistor R3 and a pin VCC of the processor MCU; the other end of the resistor R3 is connected with the cathode of diode D2 and a pin IO1 of the processor MCU; b electrode of the triode Q2 is connected with one end of the resistor R4; e electrode of triode Q2 is connected with one end of the button S1 and one end of the resistor R5; the other end of the button S1 is connected with an anode of the diode D1 and an anode of the diode D2; and the other end of the resistor R4 is connected with the other end of the resistor R5 and a pin IO2 of the processor MCU. By adopting the technical scheme of the utility model, the soft-off circuit of the viscometer has the advantages of higher power management efficiency and high intellectualization degree, and effectively prolongs the service life of key parts, such as a touch screen, etc.
Description
Technical field
The utility model relates to soft-off circuit, particularly a kind of viscosity meter soft-off circuit.
Background technology
The hard shutdown circuit of the many employings of existing Digital Viscometer; because the power work mode of hard shutdown circuit is more single; intelligent degree is low; under the long-time inactive situation of user; system is still charged; be unfavorable for protecting the critical components such as touch-screen of instrument, greatly reduced the viscosity meter time between failures.And the employing soft-off circuit can the existing problem of fine solution.
The utility model content
The purpose of this utility model provides a kind of soft-off circuit, and the system that makes can better protect the parts of easy loss.
The technical solution of the utility model is, a kind of soft-off circuit, it is characterized in that, comprise triode Q1, triode Q2, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, diode D1, diode D2, button S1 and processor MCU, wherein the e utmost point of triode Q1 and input power supply VIN, one end of resistance R 1 connects, the c utmost point of the other end of resistance R 1 and triode Q2, diode D1 negative pole, one end of resistance R 2 connects, the b utmost point of triode Q1 is connected with the other end of resistance R 2, the c utmost point of triode Q1 and an end of resistance R 3, the pin VCC of processor MCU connects, the other end of resistance R 3 and diode D2 negative pole, the pin IO1 of processor MCU connects, the b utmost point of triode Q2 is connected with an end of resistance R 4, the e utmost point of triode Q2 and the end of button S1, one end ground connection of resistance R 5, the other end of button S1 and diode D1 positive pole, diode D2 is anodal to connect the other end of the other end of resistance R 4 and resistance R 5, the pin IO2 of processor MCU connects.
The beneficial effects of the utility model are, by the selection and the combination of device, make the power management efficiency of viscosity meter soft-off circuit higher, and intelligent degree height effectively prolongs life-span of critical components such as touch-screen.
Description of drawings
Fig. 1 is the circuit theory synoptic diagram of the utility model one embodiment
Embodiment
Below in conjunction with accompanying drawing, the embodiment of technical solutions of the utility model is elaborated.
As shown in Figure 1, a kind of soft-off circuit, comprise triode Q1, triode Q2, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, diode D1, diode D2, button S1 and processor MCU, wherein the e utmost point of triode Q1 and input power supply VIN, one end of resistance R 1 connects, the c utmost point of the other end of resistance R 1 and triode Q2, diode D1 negative pole, one end of resistance R 2 connects, the b utmost point of triode Q1 is connected with the other end of resistance R 2, the c utmost point of triode Q1 and an end of resistance R 3, the pin VCC of processor MCU connects, the other end of resistance R 3 and diode D2 negative pole, the pin IO1 of processor MCU connects, the b utmost point of triode Q2 is connected with an end of resistance R 4, the e utmost point of triode Q2 and the end of button S1, one end ground connection of resistance R 5, the other end of button S1 and diode D1 positive pole, diode D2 is anodal to connect the other end of the other end of resistance R 4 and resistance R 5, the pin IO2 of processor MCU connects.
After the VIN power supply is ready, as pressing the button S1 this moment, the b of triode Q1 is low level very, triode Q1 conducting, the power supply VCC of processor MCU and other circuit output that powers on, processor MCU is started working, processor MCU judges that on the IO1 pin be that low level is just put high level on pin IO2, triode Q2 conducting, the b utmost point of triode Q1 will keep low level and conducting always, processor MCU and other circuit operate as normal.When the long-time inoperation of user or user press the button S1 once more, the counter of processor MCU overflows or processor judges that low level on the IO1 pin is after a period of time, processor is differentiated oneself state, put low level on pin IO2, triode Q2 ends, and the b utmost point of triode Q1 will become high level and end, the power supply VCC of processor MCU and other circuit will disconnect, critical components such as touch-screen also cut off the power supply, and can effectively reduce power consumption like this, prolong the life-span of critical components such as touch-screen.
After viscosity meter had adopted above circuit, the work efficiency of power supply was improved, and average power consumption reduces, and intelligent degree is higher, control more flexible, user's more convenient operation, the prolongation of critical component life-span, the instrument global reliability is better.
Claims (1)
1, a kind of soft-off circuit, it is characterized in that, comprise triode Q1, triode Q2, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, diode D1, diode D2, button S1 and processor MCU, wherein the e utmost point of triode Q1 and input power supply VIN, one end of resistance R 1 connects, the c utmost point of the other end of resistance R 1 and triode Q2, diode D1 negative pole, one end of resistance R 2 connects, the b utmost point of triode Q1 is connected with the other end of resistance R 2, the c utmost point of triode Q1 and an end of resistance R 3, the pin VCC of processor MCU connects, the other end of resistance R 3 and diode D2 negative pole, the pin IO1 of processor MCU connects, the b utmost point of triode Q2 is connected with an end of resistance R 4, the e utmost point of triode Q2 and the end of button S1, one end ground connection of resistance R 5, the other end of button S1 and diode D1 positive pole, diode D2 is anodal to connect the other end of the other end of resistance R 4 and resistance R 5, the pin IO2 of processor MCU connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201547133U CN201289453Y (en) | 2008-10-31 | 2008-10-31 | Soft closedown circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201547133U CN201289453Y (en) | 2008-10-31 | 2008-10-31 | Soft closedown circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201289453Y true CN201289453Y (en) | 2009-08-12 |
Family
ID=40981137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201547133U Expired - Fee Related CN201289453Y (en) | 2008-10-31 | 2008-10-31 | Soft closedown circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201289453Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213993A (en) * | 2010-04-01 | 2011-10-12 | 康佳集团股份有限公司 | Circuit for soft startup and soft shutdown |
| CN102508536A (en) * | 2011-10-28 | 2012-06-20 | 惠而邦电子衡器（昆山）有限公司 | One-button startup and shutdown circuit in embedded system and control method thereof |
-
2008
- 2008-10-31 CN CNU2008201547133U patent/CN201289453Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213993A (en) * | 2010-04-01 | 2011-10-12 | 康佳集团股份有限公司 | Circuit for soft startup and soft shutdown |
| CN102213993B (en) * | 2010-04-01 | 2015-06-17 | 康佳集团股份有限公司 | Circuit for soft startup and soft shutdown |
| CN102508536A (en) * | 2011-10-28 | 2012-06-20 | 惠而邦电子衡器（昆山）有限公司 | One-button startup and shutdown circuit in embedded system and control method thereof |
| CN102508536B (en) * | 2011-10-28 | 2014-07-09 | 台衡精密测控(昆山)股份有限公司 | One-button startup and shutdown circuit in embedded system and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090812 Termination date: 20121031 |