CN102749984B - Computer power-off reminding circuit for saving energy - Google Patents
Computer power-off reminding circuit for saving energy Download PDFInfo
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- CN102749984B CN102749984B CN201110100684.9A CN201110100684A CN102749984B CN 102749984 B CN102749984 B CN 102749984B CN 201110100684 A CN201110100684 A CN 201110100684A CN 102749984 B CN102749984 B CN 102749984B
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- nand gate
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Abstract
A kind of computer power-off reminding circuit for saving energy, including a connector, one light emitting diode, one NAND gate, one voltage output end and rotating key switch, described rotating key switch includes that first and second switchs, the start pin of described adapter connects the first end of described first switch, second end ground connection of described first switch, the voltage pin of described adapter connects the first end of described second switch, second end of described second switch connects described voltage output end, the voltage end of described NAND gate and the first input end of described NAND gate, the signal pins of described adapter connects the second input of described NAND gate, the outfan of described NAND gate connects the anode of described light emitting diode, the minus earth of described light emitting diode.Described energy-conservation alert circuit reminds computer user to come energy-conservation by rotating key switch OFF 5V standby voltage by the luminescence of described light emitting diode.
Description
Technical field
The present invention relates to a kind of alert circuit, particularly to a kind of computer power-off reminding circuit for saving energy.
Background technology
According to ACPI (Advanced Configuration and Power Interface, ACPI) specification, the duty of computer can be divided into S0 to S5 by computer power management system, they represent implication respectively:
S0: computer normally works, all hardware design is completely in the state opened or normally work；
S1: also referred to as POS(Power
On Suspend, CPU quit work), other hardware device the most normally works；
S2: CPU is closed, but remaining hardware device still operates；
S3: commonly referred to STR(Suspend
To RAM, suspends to internal memory), after operating data write internal memory, close hard disk；
S4: also referred to as STD(Suspend
To Disk, suspends to hard disk), memory information write hard disk, the most all parts quit work；
S5: all hardware equipment (including power supply) is all closed, i.e. computer is in off-mode.
User can check the mode of operation of computer by the power management menu of computer, and when computer is in S0 state, power supply is in opening；After computer shuts down, power supply starts to proceed to S5 state, and now motherboard is further connected with the standby voltage signal of+5VSB, using the working power as mainboard power supply supervisory circuit, support the functions such as computer wake-up, thus shutdown aft engine plate is also persistently consuming electric energy, causes unnecessary waste.
Summary of the invention
In view of this, it is necessary to a kind of computer power-off reminding circuit for saving energy is provided, electric energy is saved with shutoff standby voltage after computer shuts down.
nullA kind of computer power-off reminding circuit for saving energy，Including a connector、One light emitting diode、One NAND gate、One voltage output end and rotating key switch，Described rotating key switch includes that first and second switchs，The start pin of described adapter connects the first end of described first switch，Second end ground connection of described first switch，The voltage pin of described adapter connects the first end of described second switch，Second end of described second switch connects described voltage output end、The voltage end of described NAND gate and the first input end of described NAND gate，The signal pins of described adapter connects the second input of described NAND gate，The outfan of described NAND gate connects the anode of described light emitting diode，The minus earth of described light emitting diode，When first and second switch described all closes，First and second end of described NAND gate all receives high level signal，The outfan of described NAND gate exports a low level signal，Described light emitting diode does not works，Described voltage output end exports a standby voltage，When described first switches off, described second switch closes，The first input end of described NAND gate receives a high level signal and the second input of described NAND gate receives a low level signal，The outfan of described NAND gate exports a high level signal，Described lumination of light emitting diode，Described voltage output end does not export described standby voltage.
Comparing prior art, described computer power-off reminding circuit for saving energy can remind computer user by the 5V standby voltage on computer motherboard described in described rotating key switch OFF by the luminescence of described light emitting diode after computer shuts down, and reaches energy-conservation purpose with this.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the better embodiment of computer power-off reminding circuit for saving energy of the present invention.
Main element symbol description
| Computer power-off reminding circuit for saving energy | 100 |
| Adapter | 10 |
| Electric capacity | C1、C2 |
| Resistance | R1-R4 |
| NAND gate | U1 |
| Light emitting diode | D1 |
| Rotating key switchs | 20 |
| Switch | S1、S2 |
| Voltage output end | Vout |
| Voltage source | VCC |
Following detailed description of the invention will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Detailed description of the invention
As shown in Figure 1, computer power-off reminding circuit for saving energy 100 of the present invention is arranged on a computer motherboard, its better embodiment includes a connector 10, electric capacity C1 and C2, resistance R1-R4, a light emitting diode (light emitting diode, LED) D1, NAND gate U1, a voltage output end Vout and rotating key switch 20.In the present embodiment, described rotating key switch 20 and described LED D1 is arranged on described computer front panel, by the described rotating key switch 20 described computer of startup.Described rotating key switch 20 is that known techniques describes the most in detail at this, its function be can press upspring the most rotatable, after pressing this key switch, can close or disconnect a switch, such as the switch S1 in present embodiment, when rotating to a certain appointment position (as started position or closed position), then can close or disconnect another switch, such as the switch S2 in present embodiment.
The start pin PS_ON of described adapter 10 connects one end of described switch S1, and the other end ground connection of described switch S1, described electric capacity C1 is serially connected between start pin PS_ON and the ground of described adapter 10.Voltage pin P5V_STBY of described adapter 10 connects one end of described switch S2, and the other end of described switch S2 connects described voltage output end Vout, the voltage end of described NAND gate U1 and connects the first input end of described NAND gate U1 through described resistance R3.Signal pins PWRGD_PS of described adapter 10 connects the second input of described NAND gate U1, described electric capacity C2 is serially connected between signal pins PWRGD_PS and the ground of described adapter 10, described resistance R1 is serially connected between signal pins PWRGD_PS of described adapter 10 and a voltage source VCC, and described resistance R2 is serially connected between signal pins PWRGD_PS and the ground of described adapter 10.The outfan of described NAND gate U1 connects the anode of described LED D1, and the negative electrode of described LED D1 is through described resistance R4 ground connection, the earth terminal ground connection of described NAND gate U1.
nullDuring use，Described adapter 10 connects the power supply unit of described computer，When described rotating key switch 20 rotates to start position (i.e. Guan Bi switch S2) and press this key switch 20(i.e. close switch S1) time，Described power supply unit receives a low level starting-up signal by the pin PS_ON of described adapter 10，Described booting computer，Now power supply unit exports the power good signal of a high level by the pin PWRGD_PS of described adapter 10 and exports a 5V standby voltage by the pin P5V_STBY of described adapter 10，The power good signal of described 5V standby voltage and described high level is respectively supplied to first and second input of described NAND gate U1，The outfan of described NAND gate U1 exports a low level signal，Described LED D1 is the most luminous，To indicate described computer to be in normal operating conditions，Described voltage output end Vout exports 5V standby voltage.
nullWhen again pressing this key switch 20，I.e. disconnect switch S1 and switch S2 and still close，Described power supply unit is not received by starting-up signal by the pin PS_ON of described adapter 10 and closes，Described computer shuts down，Second input pin of described NAND gate U1 receives a low level power good signal，Because the most described power supply unit still has 5V standby voltage to export，The first input end of the most described NAND gate U1 receives 5V standby voltage，The outfan of described NAND gate U1 exports a high level signal，Described LED D1 conducting and luminous，To indicate described computer be in off-mode and remind user that described rotating key switch 20 rotates to closed mode (i.e. disconnecting switch S2)，So that described 5V standby voltage will not be exported to the electronic component on described computer motherboard by described voltage output end Vout，5V standby voltage is closed to realize energy-conservation purpose with this.
Described computer power-off reminding circuit for saving energy 100 can remind computer user by the 5V standby voltage on the described rotating key switch 20 described computer motherboard of shutoff after computer shuts down by the luminescence of described light emitting diode D1, reaches energy-conservation purpose with this.
Claims (3)
1. a computer power-off reminding circuit for saving energy, including a connector, a light emitting diode, one with non-
Door, a voltage output end and rotating key switch, described rotating key switch includes that first and second is opened
Closing, the start pin of described adapter connects the first end of described first switch, the of described first switch
Two end ground connection, the voltage pin of described adapter connects the first end of described second switch, and described second opens
The second end closed connects described voltage output end, the voltage end of described NAND gate and the first of described NAND gate
Input, the signal pins of described adapter connects the second input of described NAND gate, described NAND gate
Outfan connect described light emitting diode anode, the minus earth of described light emitting diode, when described
When first and second switch all closes, first and second input of described NAND gate all receives high level
Signal, the outfan of described NAND gate exports a low level signal, and described light emitting diode does not works, described
Voltage output end exports a standby voltage, when when described first switches off, described second switch closes,
The first input end of described NAND gate receives the second input termination of a high level signal and described NAND gate
Receiving a low level signal, the outfan of described NAND gate exports a high level signal, described light-emitting diodes
Pipe is luminous, and the most described voltage output end still exports described standby voltage, to indicate described computer for shutdown
State also reminds user by described rotating key switch rotary to closed mode, so that described standby electricity
Pressure will not be exported to the electronic component on described computer motherboard by described voltage output end, and then closes
Described standby voltage realizes energy-conservation.
2. computer power-off reminding circuit for saving energy as claimed in claim 1, it is characterised in that: described rotation
Key switch is arranged on a computer front panel.
3. computer power-off reminding circuit for saving energy as claimed in claim 1, it is characterised in that: described luminescence
Diode is arranged on a computer front panel.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110100684.9A CN102749984B (en) | 2011-04-21 | Computer power-off reminding circuit for saving energy | |
| TW100114754A TWI494746B (en) | 2011-04-21 | 2011-04-27 | Remind circuit after shutting up computer to save energy |
| US13/104,017 US8427332B2 (en) | 2011-04-21 | 2011-05-10 | Energy-saving reminder circuit for computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110100684.9A CN102749984B (en) | 2011-04-21 | Computer power-off reminding circuit for saving energy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102749984A CN102749984A (en) | 2012-10-24 |
| CN102749984B true CN102749984B (en) | 2016-12-14 |
Family
ID=
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5657257A (en) * | 1994-09-28 | 1997-08-12 | Samsung Electronics Co., Ltd. | Power-supply controller of computer |
| CN101604282A (en) * | 2008-06-13 | 2009-12-16 | 鸿富锦精密工业（深圳）有限公司 | Voltage detection alarm device |
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5657257A (en) * | 1994-09-28 | 1997-08-12 | Samsung Electronics Co., Ltd. | Power-supply controller of computer |
| CN101604282A (en) * | 2008-06-13 | 2009-12-16 | 鸿富锦精密工业（深圳）有限公司 | Voltage detection alarm device |
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Effective date of registration: 20160324 Address after: 518109 Guangdong province Shenzhen city Longhua District Dragon Road No. 83 wing group building 11 floor Applicant after: SCIENBIZIP CONSULTING (SHEN ZHEN) Co.,Ltd. Address before: 518109 Guangdong city of Shenzhen province Baoan District Longhua Town Industrial Zone tabulaeformis tenth East Ring Road No. 2 two Applicant before: HONG FU JIN PRECISION INDUSTRY (SHENZHEN) Co.,Ltd. Applicant before: HON HAI PRECISION INDUSTRY Co.,Ltd. |
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Effective date of registration: 20160602 Address after: 518000 Guangdong Province, Shenzhen New District of Longhua City, Dalang street, Hua Sheng Lu Yong Jingxuan commercial building 1608 Applicant after: Jinyang Shenzhen sea Network Intelligent Technology Co.,Ltd. Address before: 518109 Guangdong province Shenzhen city Longhua District Dragon Road No. 83 wing group building 11 floor Applicant before: SCIENBIZIP CONSULTING (SHEN ZHEN) Co.,Ltd. |
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Effective date of registration: 20160922 Address after: 225599 Cao village, Jiangyan Town, Jiangyan District, Jiangsu, Taizhou Applicant after: Taizhou Zhigu Software Park Co.,Ltd. Address before: Tianhe District Tong East Road Guangzhou city Guangdong province 510665 B-101 No. 5, room B-118 Applicant before: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Effective date of registration: 20160922 Address after: Tianhe District Tong East Road Guangzhou city Guangdong province 510665 B-101 No. 5, room B-118 Applicant after: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Address before: 518000 Guangdong Province, Shenzhen New District of Longhua City, Dalang street, Hua Sheng Lu Yong Jingxuan commercial building 1608 Applicant before: Jinyang Shenzhen sea Network Intelligent Technology Co.,Ltd. |
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