CN200950638Y - Standing low-power consumption circuit and television set having the same - Google Patents
Standing low-power consumption circuit and television set having the same Download PDFInfo
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- CN200950638Y CN200950638Y CN 200620010452 CN200620010452U CN200950638Y CN 200950638 Y CN200950638 Y CN 200950638Y CN 200620010452 CN200620010452 CN 200620010452 CN 200620010452 U CN200620010452 U CN 200620010452U CN 200950638 Y CN200950638 Y CN 200950638Y
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Abstract
The utility model discloses a low-power consumption standby circuit and a television set with the standby circuit, which includes a main power supply and a main central processing unit; the low-voltage power supply terminal of the main power supply is connected with a power supply terminal of a lower-power consumption processor; the processor receives a start-up command signal through the input terminal, which is connected with a control terminal of a switch circuit through the output terminal; the gating terminal of the switch circuit is connected with a lower-voltage power supply terminal of the main power supply and the power supply terminal of the main central processing unit. When the processor receives start-up command, the processor supplies power to the power supply terminal of the main central processing unit through the switch circuit. The utility model realizes a reception of standby remote control start-up through adding a small-power processor in a small signal system circuit board of the television set so as to eliminate the problem of huge standby power consumption due to continuous operation of the central processing unit, which meets the needs for energy saving of the electrical products and improves the competitive strength of television products in the markets.
Description
Technical field
The utility model belongs to the TV set circuit technical field, relates to a kind of improvement of television set stand-by circuit, specifically, relates to a kind of control circuit of realizing television set standby low-power consumption.
Background technology
For some specific products such as television set, need control and operate product by remote controller, comprise opening and closing of power supply, this just needs television set when standby, its host CPU chip is still in running order, to receive the remote-controlled start-up instruction that remote controller sends.Usually in small signal system, the supply power voltage of main power source is less, and current requirements is bigger.Voltage is generally+5V, and electric current will be about 1 ampere.If adopting traditional dependence host CPU chip controls the operating state of other chips, under holding state, keep host CPU work, the main power source supply power voltage will maintain+5V, electric current maintains 200～300mA, the power that host CPU chip and other chips consume in the small-signal disposable plates is 0.5W nearby, is difficult to reach the requirement of national energy conservation standard, promptly under the electric equipment products holding state power consumption less than 1W.Therefore, the power loss that needs the special circuit design of employing to subdue this partial circuit as much as possible reaches energy saving purposes.
Summary of the invention
The utility model receives the remote-controlled start-up signal in order to solve available technology adopting host CPU chip, and then realize other chip operation states are controlled the big problem of being brought of stand-by power consumption, a kind of novel low-power consumption standby control circuit is provided, by on system circuit board, setting up a small-power processor, be used for receiving the starting-up signal that remote controller sends, and then make the host CPU chip when standby, be in the outage off position, thereby realized the purpose of standby low-power consumption, reached energy-conservation requirement.
For solving the problems of the technologies described above, the utility model is achieved by the following technical solutions:
A kind of standby low consumption circuit and have the television set of described stand-by circuit, comprise main power source and host CPU, the low-voltage power supply end of described main power source connects the power end of a low power processor, described processor receives the start-up command signal by its input, the control end that connects a switching circuit by its output, the gating end of described switching circuit connects the low-voltage power supply end of described main power source and the power end of host CPU, powers to the power end of host CPU by described switching circuit control main power source when processor receives start-up command.
Wherein, in described switching circuit, include a NPN type triode and a P channel MOS tube, the base stage of described NPN type triode connects the control signal output ends of described processor, grounded emitter, collector electrode connects the grid of described P channel MOS tube, and connects the low-voltage power supply end of described main power source through resistance; The source electrode of described P channel MOS tube connects the low-voltage power supply end of described main power source, and drain electrode connects the power end power supply of described host CPU.
In order to improve described processor to the driving force of switching circuit and the stability of switch controlling signal transmission, the control signal output ends of described processor connects the low-voltage power supply end of described main power source by pull-up resistor, and connects the base stage of described NPN type triode through rc filter circuit.
Described processor adopting one small-power monolithic machine chip is realized, receives the remote-controlled start-up command signal that remote controller sends by its input.
Compared with prior art, advantage of the present utility model and good effect are: the utility model is by setting up a little chip of low-power scm outside the television system host CPU, when television set is in holding state, thoroughly cut off the power supply power supply of host CPU, make it be in the outage off position, the power consumption during with the minimizing standby.The remote-controlled start-up command signal of sending for remote controller then receives by single-chip microcomputer, and then the control main power source is powered to host CPU when start, recovers the television system operate as normal.The utility model is by adopting above-mentioned simple circuit configuration, solved the big problem of television set stand-by power consumption with lower cost, realized the purpose of complete machine stand-by power consumption, reached the requirement of national energy conservation standard, brought the improvement of the matter of television system function less than 1W.
Description of drawings
Fig. 1 is single-chip microcomputer and its peripheral circuit catenation principle figure in the utility model;
Fig. 2 is a switching circuit schematic diagram in the utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is done explanation in further detail.
The utility model employing model is that the small-power monolithic machine of ATMEGA48 cooperates peripheral switching circuit to form stand-by circuit, when the television set standby, receive the remote-controlled start-up command signal that remote controller sends, and then the switch motion by the control switch circuit, main power source is to the direct current supply of host CPU when being implemented in television boot-strap, and physical circuit is referring to Fig. 1, shown in Figure 2.
Among Fig. 1, main power source output+5V direct voltage 5V_STBY connects the feeder ear of single-chip microcomputer, when the television set standby, keeps single-chip microcomputer and work on power, and receive the command signal that remote controller sends by its input PB0.Filter circuit connection as shown in Figure 2 the ON-OFF control circuit of the output PC3 of described single-chip microcomputer by forming by resistance R 470, capacitor C 426, and connect the dc voltage output end 5V_STBY of described main power source through pull-up resistor R466, to improve the switch drive ability of single-chip microcomputer to switching circuit.
In described switching circuit, as Fig. 2, the base stage that connects NPN type triode Q14 by the switch controlling signal LPWRON of single-chip microcomputer output PC3 output through resistance R 173, capacitor C 344, the grounded emitter of described NPN type triode Q14, collector electrode connects the grid of a P channel MOS tube Q15A, and connects the dc voltage output end 5V_STBY of main power source by parallel resistor R172, capacitor C 327.The source electrode of described P channel MOS tube Q15A connects the dc voltage output end 5V_STBY of described main power source, and drain electrode connects the feeder ear VCC of host CPU.
When television set was in holding state, main power source was the single-chip microcomputer power supply, keep single-chip microcomputer work, and the main power source output current only need maintain tens milliamperes, and the singlechip consumed power is starkly lower than the host CPU stand-by power consumption far less than 0.1W.At this moment, the current potential of single-chip microcomputer output PC3 is low, NPN type triode Q1 ends, + 5V DC power supply affacts the grid of P channel MOS tube Q15A by resistance R 172, makes metal-oxide-semiconductor be in cut-off state, thereby the blocking-up main power source is to the power supply of host CPU, host CPU thoroughly cuts off the power supply when realizing standby, be in off position, thereby realized the obvious reduction of stand-by power consumption, reached energy saving purposes.
When television set need be started shooting work, send the remote-controlled start-up signal by remote controller, single-chip microcomputer is monitored the remote-control transmitting signal that its input PB0 transmits in real time, when receiving the remote-controlled start-up command signal, by the output PC3 output high-level control signal LPWRON of single-chip microcomputer, control NPN type triode Q14 conducting, drag down the collector voltage of triode Q14, make P channel MOS tube Q15A conducting, realize of the power supply of start back main power source, finish the normal startup work of television set to host CPU.
The reception of remote-controlled start-up instruction when the utility model is realized standby by set up small-power monolithic machine in television set small signal system circuit board, thereby the big problem of stand-by power consumption that host CPU works on and brought when having avoided standby, satisfy country to the energy-saving and cost-reducing requirement of electric equipment products, improved the market competitiveness of tv product.Certainly; above-mentioned explanation is not to be to restriction of the present utility model; the utility model also is not limited in above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art are made in essential scope of the present utility model also should belong to protection range of the present utility model.
Claims (10)
1. standby low consumption circuit, comprise main power source and host CPU, it is characterized in that: the low-voltage power supply end of described main power source connects the power end of a low power processor, described processor receives the start-up command signal by its input, the control end that connects a switching circuit by its output, the gating end of described switching circuit connects the low-voltage power supply end of described main power source and the power end of host CPU, powers to the power end of host CPU by described switching circuit control main power source when processor receives start-up command.
2. standby low consumption circuit according to claim 1, it is characterized in that: in described switching circuit, include a NPN type triode and a P channel MOS tube, the base stage of described NPN type triode connects the control signal output ends of described processor, grounded emitter, collector electrode connects the grid of described P channel MOS tube, and connects the low-voltage power supply end of described main power source through resistance; The source electrode of described P channel MOS tube connects the low-voltage power supply end of described main power source, and drain electrode connects the power end power supply of described host CPU.
3. standby low consumption circuit according to claim 2 is characterized in that: the control signal output ends of described processor connects the low-voltage power supply end of described main power source by pull-up resistor, and connects the base stage of described NPN type triode through rc filter circuit.
4. standby low consumption circuit according to claim 1 is characterized in that: described processor receives the remote-controlled start-up command signal that remote controller sends by its input.
5. standby low consumption circuit according to claim 1 is characterized in that: described processor is a small-power monolithic machine chip.
6. television set with the described standby low consumption circuit of claim 1, comprise main power source and host CPU, it is characterized in that: the low-voltage power supply end of described main power source connects the power end of a low power processor, described processor receives the start-up command signal by its input, the control end that connects a switching circuit by its output, the gating end of described switching circuit connects the low-voltage power supply end of described main power source and the power end of host CPU, powers to the power end of host CPU by described switching circuit control main power source when processor receives start-up command.
7. television set according to claim 6, it is characterized in that: in described switching circuit, include a NPN type triode and a P channel MOS tube, the base stage of described NPN type triode connects the control signal output ends of described processor, grounded emitter, collector electrode connects the grid of described P channel MOS tube, and connects the low-voltage power supply end of described main power source through resistance; The source electrode of described P channel MOS tube connects the low-voltage power supply end of described main power source, and drain electrode connects the power end power supply of described host CPU.
8. television set according to claim 7 is characterized in that: the control signal output ends of described processor connects the low-voltage power supply end of described main power source by pull-up resistor, and connects the base stage of described NPN type triode through rc filter circuit.
9. television set according to claim 6 is characterized in that: described processor receives the remote-controlled start-up command signal that remote controller sends by its input.
10. television set according to claim 6 is characterized in that: described processor is a small-power monolithic machine chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620010452 CN200950638Y (en) | 2006-09-26 | 2006-09-26 | Standing low-power consumption circuit and television set having the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620010452 CN200950638Y (en) | 2006-09-26 | 2006-09-26 | Standing low-power consumption circuit and television set having the same |
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| Publication Number | Publication Date |
|---|---|
| CN200950638Y true CN200950638Y (en) | 2007-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620010452 Expired - Fee Related CN200950638Y (en) | 2006-09-26 | 2006-09-26 | Standing low-power consumption circuit and television set having the same |
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| Country | Link |
|---|---|
| CN (1) | CN200950638Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101197979B (en) * | 2007-12-05 | 2010-10-06 | 深圳创维数字技术股份有限公司 | Energy-saving standby system of digital television receiver |
| CN102487278A (en) * | 2010-12-01 | 2012-06-06 | 晨星软件研发(深圳)有限公司 | Low-leakage output/input circuit and related device |
| CN103167316A (en) * | 2010-05-26 | 2013-06-19 | 友达光电股份有限公司 | Input signal detection circuit and related liquid crystal television |
| CN103425235A (en) * | 2013-08-13 | 2013-12-04 | 佛山市顺德万和电气配件有限公司 | Single chip microcomputer low power consumption standby circuit and control method |
| CN104090140A (en) * | 2014-06-30 | 2014-10-08 | 惠州中城电子科技有限公司 | Double-relay control circuit for one-phase meter |
| CN104917982A (en) * | 2015-05-20 | 2015-09-16 | 青岛歌尔声学科技有限公司 | Standby circuit and television set with same |
| CN107295279A (en) * | 2017-07-27 | 2017-10-24 | 广东长虹电子有限公司 | A kind of television set of low power standby |
| WO2019109487A1 (en) * | 2017-12-04 | 2019-06-13 | 广东宝乐机器人股份有限公司 | Water tank circuit of cleaning device, cleaning device, and method for controlling water tank of cleaning device |
| CN112083794A (en) * | 2020-09-11 | 2020-12-15 | 深圳市当智科技有限公司 | Power management circuit, electronic product and control method |
-
2006
- 2006-09-26 CN CN 200620010452 patent/CN200950638Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101197979B (en) * | 2007-12-05 | 2010-10-06 | 深圳创维数字技术股份有限公司 | Energy-saving standby system of digital television receiver |
| CN103167316A (en) * | 2010-05-26 | 2013-06-19 | 友达光电股份有限公司 | Input signal detection circuit and related liquid crystal television |
| CN103167316B (en) * | 2010-05-26 | 2015-06-17 | 友达光电股份有限公司 | Input signal detection circuit and related liquid crystal television |
| CN102487278A (en) * | 2010-12-01 | 2012-06-06 | 晨星软件研发(深圳)有限公司 | Low-leakage output/input circuit and related device |
| CN102487278B (en) * | 2010-12-01 | 2017-08-04 | 晨星软件研发(深圳)有限公司 | The output/input circuit and relevant apparatus of Low dark curient |
| CN103425235A (en) * | 2013-08-13 | 2013-12-04 | 佛山市顺德万和电气配件有限公司 | Single chip microcomputer low power consumption standby circuit and control method |
| CN104090140A (en) * | 2014-06-30 | 2014-10-08 | 惠州中城电子科技有限公司 | Double-relay control circuit for one-phase meter |
| CN104917982A (en) * | 2015-05-20 | 2015-09-16 | 青岛歌尔声学科技有限公司 | Standby circuit and television set with same |
| CN107295279A (en) * | 2017-07-27 | 2017-10-24 | 广东长虹电子有限公司 | A kind of television set of low power standby |
| WO2019109487A1 (en) * | 2017-12-04 | 2019-06-13 | 广东宝乐机器人股份有限公司 | Water tank circuit of cleaning device, cleaning device, and method for controlling water tank of cleaning device |
| CN112083794A (en) * | 2020-09-11 | 2020-12-15 | 深圳市当智科技有限公司 | Power management circuit, electronic product and control method |
| CN112083794B (en) * | 2020-09-11 | 2022-07-08 | 深圳市当智科技有限公司 | Power management circuit, electronic product and control method |
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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: 20070919 Termination date: 20100926 |