CN111190373B - Electrical equipment, standby control circuit and control method thereof - Google Patents
Electrical equipment, standby control circuit and control method thereof Download PDFInfo
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- CN111190373B CN111190373B CN202010042592.9A CN202010042592A CN111190373B CN 111190373 B CN111190373 B CN 111190373B CN 202010042592 A CN202010042592 A CN 202010042592A CN 111190373 B CN111190373 B CN 111190373B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25257—Microcontroller
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Abstract
The invention discloses an electric appliance, a standby control circuit and a control method thereof, wherein the standby control circuit is respectively connected with a main chip and a power panel of the electric appliance and comprises a protection module, a switch module and an adjusting module; the protection module outputs the control signal output by the main chip to the switch module; when the control signal is a first level signal, the switch module outputs a corresponding trigger signal according to the control signal to control the power panel to start up; when the control signal is a second level signal, the switch module outputs a corresponding trigger signal according to the control signal to control the power panel to be in standby; the adjusting module adjusts the voltage value of the trigger signal when the power panel is started, so that the standby power consumption of the electrical equipment in standby is effectively reduced, and the power panel can be normally started according to application requirements.
Description
Technical Field
The invention relates to the technical field of electric appliance circuits, in particular to an electric appliance, a standby control circuit and a control method thereof.
Background
The current standby control circuit always generates conduction current no matter whether the product is in work or standby, so that the standby power consumption of the product in standby is increased.
Meanwhile, when the resistance value of a pull-up resistor in the standby circuit is increased, the standby power consumption is reduced, but the voltage value of the correspondingly output startup trigger signal is also reduced, so that the power panel cannot be started; when the resistance value of the pull-up resistor is reduced, the voltage value of the startup trigger signal is increased, but the standby power consumption is also increased, so that the voltage value of the startup trigger signal cannot be flexibly adjusted.
Thus, the prior art has yet to be improved and enhanced.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide an electrical device, a standby control circuit and a control method thereof, which can effectively reduce the standby power consumption of the electrical device during standby and ensure that a power panel can be normally opened according to application requirements.
In order to achieve the purpose, the invention adopts the following technical scheme:
a standby control circuit is respectively connected with a main chip and a power panel of electrical equipment and comprises a protection module, a switch module and an adjusting module; the protection module outputs the control signal output by the main chip to the switch module; when the control signal is a first level signal, the switch module outputs a corresponding trigger signal according to the control signal to control the power panel to start up; when the control signal is a second level signal, the switch module outputs a corresponding trigger signal according to the control signal to control the power panel to be in standby; the adjusting module adjusts the voltage value of the trigger signal when the power panel is started.
In the standby control circuit, the switch module comprises a first switch unit and a second switch unit; when the control signal is a first level signal, the first switch unit controls the second switch unit to be conducted according to the control signal, so that the second switch unit outputs a corresponding trigger signal to control the power panel to be started; when the control signal is a second level signal, the first switch unit controls the second switch unit to be turned off according to the control signal, so that the second switch unit outputs a corresponding trigger signal to control the power panel to stand by.
In the standby control circuit, the protection module comprises a protection unit and a voltage division unit, and the protection unit outputs the control signal to the first switch unit; when the first switch unit is conducted according to the control signal, the voltage division unit controls the second switch unit to be conducted according to the conducting state of the first switch unit; when the first switch unit is turned off according to the control signal, the voltage division unit controls the second switch unit to be turned off according to the turn-off state of the first switch unit.
In the standby control circuit, the first switch unit comprises a first triode, the base electrode of the first triode is connected with the protection unit, the collector electrode of the first triode is connected with the voltage division unit, and the emitting electrode of the first triode is grounded.
In the standby control circuit, the second switch unit comprises a second triode and a first resistor, the base electrode of the second triode is connected with the voltage division unit, and the collector electrode of the second triode and one end of the first resistor are connected with the power panel; the emitter of the second triode is connected with electricity through the regulating module; the other end of the first resistor is grounded.
In the standby control circuit, the protection unit comprises a second resistor and a third resistor, one end of the second resistor and one end of the third resistor are both connected with the main chip, the other end of the second resistor is connected with the power supply, and the other end of the third resistor is connected with the first switch unit.
In the standby control circuit, the voltage dividing unit comprises a fourth resistor and a fifth resistor, one end of the fifth resistor is connected with the first switch unit, the other end of the fifth resistor and one end of the fourth resistor are both connected with the second switch unit, and the other end of the fourth resistor is connected with the power supply.
In the standby control circuit, the adjusting module comprises a sixth resistor, one end of the sixth resistor is connected with the power supply, and the other end of the sixth resistor is connected with the second switch unit.
A control method based on the standby control circuit as described above, comprising the steps of:
the protection module outputs the control signal output by the main chip to the switch module;
when the control signal is a first level signal, the switch module outputs a corresponding trigger signal according to the control signal to control the power panel to start up; when the control signal is a second level signal, the switch module outputs a corresponding trigger signal according to the control signal to control the power panel to be in standby;
the adjusting module adjusts the voltage value of the trigger signal when the power panel is started.
An electrical equipment comprises a main chip, a power panel and the standby control circuit.
Compared with the prior art, the invention provides the electric equipment, the standby control circuit and the control method thereof, wherein the standby control circuit is respectively connected with the main chip and the power panel of the electric equipment and comprises a protection module, a switch module and an adjusting module; the protection module outputs the control signal output by the main chip to the switch module; when the control signal is a first level signal, the switch module outputs a corresponding trigger signal according to the control signal to control the power panel to start up; when the control signal is a second level signal, the switch module outputs a corresponding trigger signal according to the control signal to control the power panel to be in standby; the adjusting module adjusts the voltage value of the trigger signal when the power panel is started, so that the standby power consumption of a product during standby is effectively reduced, and the power panel can be normally started according to application requirements.
Drawings
FIG. 1 is a block diagram of a standby control circuit according to the present invention
FIG. 2 is a schematic circuit diagram of a standby control circuit according to the present invention;
fig. 3 is a flowchart illustrating steps of a control method of a standby control circuit according to the present invention.
Detailed Description
The invention aims to provide electric equipment, a standby control circuit and a control method thereof, which can effectively reduce the standby power consumption of the electric equipment during standby and ensure that a power panel can be normally started according to application requirements.
In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a standby control circuit 10 provided by the present invention is respectively connected to a main chip 20 and a power board 30 of an electrical apparatus, and both the main chip 20 and the standby control circuit 10 are disposed on a main board of the electrical apparatus; the standby control circuit 10 includes a protection module 100, a switch module 200, and a regulation module 300; the protection module 100 is respectively connected to the main chip 20 and the switch module 200, and the switch module 200 is further connected to the adjustment module 300 and the power board 30; the standby control circuit 10 provided by the present invention can be applied to any product that needs to control the standby of the power panel 30, such as a conference tablet, an electronic whiteboard, a television, an advertisement machine, a monitor, etc.
In specific implementation, the protection module 100 outputs the control signal output by the main chip 20 to the switch module 200; when the control signal is a first level signal, the switch module 200 outputs a corresponding trigger signal according to the control signal to control the power panel 30 to start up; when the control signal is a second level signal, the switch module 200 outputs a corresponding trigger signal according to the control signal to control the power panel 30 to stand by; the adjusting module 300 adjusts the voltage value of the trigger signal when the power panel 30 is turned on, in this embodiment, the first level signal is a high level signal, and the second level signal is a low level signal.
In this embodiment, when the electrical equipment normally works, the switch module 200 is turned on when the control signal is at a high level, so that the output corresponding trigger signal is also at a high level, and the power panel 30 is further controlled to be turned on to enter a working state; under the condition that the electrical equipment enters a standby state, the switch module 200 is correspondingly turned off when the control signal is at a low level, so that the output corresponding trigger signal is also at a low level, and the power panel 30 is further controlled to be in standby, thereby reducing the power consumption of the product in standby; when the power panel 30 is in a standby state, the switch module 200 in the standby control circuit 10 is turned off, so that no on-current and no power consumption are generated in the standby control circuit 10, and standby power consumption of a product in the standby state is further reduced, and when the power panel 30 is turned on, the adjusting module 300 in the standby control circuit 10 can flexibly adjust the voltage value of the trigger signal, so that the voltage value of the trigger signal meets the voltage required by the working state of the power panel 30, and normal turn-on is ensured, therefore, the standby control circuit 10 of the present invention can effectively reduce standby power consumption of the product in the standby state, and ensure that the power panel 30 can be normally turned on according to application requirements.
Further, referring to fig. 2, the switch module 200 includes a first switch unit 210 and a second switch unit 220, and both the first switch unit 210 and the second switch unit 220 are connected to the protection module 100; when the control signal is a first level signal, the first switch unit 210 controls the second switch unit 220 to be turned on according to the control signal, so that the second switch unit 220 outputs a corresponding trigger signal to control the power panel 30 to be turned on; when the control signal is a second level signal, the first switch unit 210 controls the second switch unit 220 to turn off according to the control signal, so that the second switch unit 220 outputs a corresponding trigger signal to control the power panel 30 to stand by, thereby reducing the standby power consumption of the product.
When the electrical equipment enters a working state, the control signal is a high level signal, the first switch unit 210 is turned on according to the control signal, and then the second switch unit 220 is controlled to be correspondingly turned on, and the output trigger signal is a high level when the second switch unit 220 is turned on, so that the power panel 30 is turned on according to the trigger signal; when the electrical equipment enters a standby state, the control signal is a low level signal, the first switch unit 210 is turned off according to the control signal, and then the second switch unit 220 is controlled to be correspondingly turned off, and the output trigger signal is a low level when the second switch unit 220 is turned off, so that the power board 30 enters the standby state according to the trigger signal, that is, the first switch unit 210 and the second switch unit 220 are simultaneously turned on when the electrical equipment normally works, and are simultaneously turned off after the electrical equipment enters the standby state, so that no conducting current exists in the standby control circuit 10, and the standby control circuit 10 does not have power consumption at the time, thereby further reducing the standby power consumption of the electrical equipment.
Further, the protection module 100 includes a protection unit 110 and a voltage dividing unit 120, the protection unit 110 is respectively connected to the main chip 20 and the first switch unit 210, and the voltage dividing unit 120 is respectively connected to the first switch unit 210 and the second switch unit 220.
Wherein the protection unit outputs the control signal to the first switching unit; the protection unit is used for absorbing impact current brought by input of the control signal, damage to a subsequent circuit caused by overlarge impact current is avoided, and safety of the standby control circuit is improved by arranging the protection unit.
When the control signal is a first level signal and the first switch unit 210 is turned on according to the control signal, the voltage dividing unit 120 controls the second switch unit 220 to be turned on according to the on state of the first switch unit 210, so that the trigger signal output by the second switch unit 220 is a high level, and the power panel 30 is controlled to be turned on and enter a working state; when the control signal is a second level signal, and the first switch unit 210 is turned off according to the control signal, the voltage dividing unit 120 controls the second switch unit 220 to be turned off according to the off state of the first switch unit 210, so that the trigger signal output by the second switch unit 220 is a low level, and the power panel 30 is controlled to enter a standby state; that is to say, when the power panel 30 enters the standby state, the first switch unit 210 and the second switch unit 220 are both turned off, and at this time, there is no on-current in the standby control circuit 10, and there is no corresponding power consumption, so that the standby power consumption of the electrical equipment is reduced. Further, with reference to fig. 2, the first switching unit 210 includes a first transistor Q1, a base of the first transistor Q1 is connected to the protection unit 110, a collector of the first transistor Q1 is connected to the voltage dividing unit 120, an emitter of the first transistor Q1 is grounded, the second switching unit 220 includes a second transistor Q2 and a first resistor R1, a base of the second transistor Q2 is connected to the voltage dividing unit 120, and a collector of the second transistor Q2 and one end of the first resistor R1 are connected to the power board 30; the emitter of the second triode Q2 is connected with power; in this embodiment, the first triode Q1 is an NPN-type triode, and the second triode Q2 is a PNP-type triode, so that when the electrical equipment enters the standby state, the first triode Q1 and the second triode Q2 are controlled to be turned off and stopped at the same time, and further, no conducting current exists in the standby control circuit 10 after the electrical equipment enters the standby state, so as to further reduce the standby power consumption of the electrical equipment.
Furthermore, the protection unit 110 includes a second resistor R2 and a third resistor R3, one end of the second resistor R2 and one end of the third resistor R3 are both connected to the main chip 20, the other end of the second resistor R2 is connected to power, and the other end of the third resistor R3 is connected to the base of the first transistor Q1; the voltage dividing unit 120 includes a fourth resistor R4 and a fifth resistor R5, one end of the fifth resistor R5 is connected to the collector of the first triode Q1, the other end of the fifth resistor R5 and one end of the fourth resistor R4 are both connected to the base of the second triode Q2, and the other end of the fourth resistor R4 is connected to the power supply, wherein the second resistor R2 is a pull-up resistor, and the pull-up action of the second resistor R2 ensures that the control signal is default to a high-level signal, so that the first triode Q1 and the second triode Q2 are in a conducting state, and the power supply board is default to an open state; the third resistor R3 is used to absorb the surge current, protect the base of the first transistor Q1, and avoid the first transistor from being burned out due to the over-high surge current.
When electrical equipment normally works, the control signal received by the STANDBY _ PWR signal end connected to the main chip 20 of the protection unit 110 is a high-level signal, the control signal passes through the third resistor R3 and is output to the base of the first triode Q1, at this time, the base of the first triode Q1 is at a high level, because the emitter of the first triode Q1 is grounded, a voltage difference Vbe1 between the base and the emitter of the first triode Q1 is Vb1-Ve1 is H, wherein Vb1 is the base voltage of the first triode Q1, Ve1 is the emitter voltage of the first triode Q1, H is a voltage value when the control signal is a high-level signal, at this time, a conduction condition of the first triode Q1 is reached (Vbe is greater than or equal to 0.65V), and the first triode Q1 is conducted; that is, the collector of the first transistor Q1 is turned on to the emitter, which corresponds to the fact that the collector of the first transistor Q1 is also grounded; then, a voltage dividing circuit is formed by a power input at the 5V _ STB signal end connected to the other end of the fourth resistor R4 through the fourth resistor R4 to the fifth resistor R5 and then to ground, and a divided voltage is generated at the connection between the fourth resistor R4 and the fifth resistor R5, that is, (R5/R4+ R5) × 5V — 3.11V, and the base voltage of the second transistor Q2 is 3.11V, so the difference between the emitter and the base of the second transistor Q2 is Veb2 ═ Ve2-Vb 8 ═ 5V-3.11V — 1.89V, where Ve2 is the emitter voltage of the second transistor Q2, Vb 8 is the base voltage of the second transistor Q6866, the conduction condition of the second transistor Q2 (Veb ≧ 0.65V), the second transistor Q6327 is turned ON, the power signal flows from the collector of the second transistor Q73727 to the second transistor PS, and the power input terminal of the second transistor Q30 is adjusted to ground through the second transistor STB 3673730, that is turned ON-PS At this time, the trigger signal output by the PS-ON signal terminal is at a high level, the power panel 30 is in a normal output working state, and the voltage value of the trigger signal can be adjusted by the adjusting module 300, so that the standby control circuit 10 can adapt to different power panels 30 according to actual needs.
When the electrical equipment enters a STANDBY state, the control signal received by the STANDBY _ PWR signal terminal is a low level signal, and is output to the base of the first triode Q1 through the third resistor R3, at this time, the base of the first triode Q1 is at a low level, and the emitter of the first triode Q1 is grounded, so that the voltage difference Vbe1 between the base and the emitter of the first triode Q1 is Vb1-Ve1 is L, where L is a voltage value when the control signal is a low level signal, the conduction condition of the first triode Q1 is not satisfied (Vbe is greater than or equal to 0.65V), the first triode Q1 is turned off, at this time, the base of the second triode Q2 is pulled up to a high level by the power input by the 5V _ STB signal terminal through the fourth resistor R4, the emitter of the second triode Q2 is pulled up to a high level by the power input by the 5V _ STB signal terminal through the regulation module 300, the voltage difference between the emitter and the base of the second triode Q2 is Veb ═ 5V _ STB-5V _ STB is L, and the conduction condition of the second triode Q2 is not satisfied (Veb ≥ 0.65V), the second triode Q2 is cut off, at this time, the trigger signal output by the PS-ON signal end is pulled down to a low level through the first resistor R1, and the power board 30 is further controlled to enter a standby state, so that the first triode Q1 and the second triode Q2 are controlled by the control signal, it is ensured that the first triode Q1 and the second triode Q2 are both turned ON when the electrical equipment is in normal operation, the electrical equipment is simultaneously cut off when the electrical equipment enters the standby state, no additional ON current is generated, and the standby power consumption of the electrical equipment is further effectively reduced.
Further, the adjusting module 300 includes a sixth resistor R6, one end of the sixth resistor R6 is connected to power, the other end of the sixth resistor R6 is connected to the collector of the second transistor Q2 and the PS-ON signal terminal, the sixth resistor R6 is a pull-up resistor, when the electrical equipment works normally, the first triode Q1 and the second triode Q2 are both conducted, the voltage value of the trigger signal output by the PS-ON signal end can be adjusted by changing the resistance value of the sixth resistor R6, the maximum voltage value can be adjusted to 5V, through the adjustment of the adjustment module 300, the standby control circuit 10 can be matched with different power panels 30, that is, it is ensured that the electrical equipment can be adapted to different power panels 30, the power panel 30 cannot work normally due to the excessively low voltage of the trigger signal output by the PS-ON signal end, and the application range of the standby control circuit 10 is also expanded.
The present invention also provides a method for controlling a standby control circuit, referring to fig. 3, the method for controlling the standby control circuit includes the following steps:
s100, the protection module outputs a control signal output by the main chip to the switch module;
s200, when the control signal is a first level signal, the switch module outputs a corresponding trigger signal according to the control signal to control the power panel to be started; when the control signal is a second level signal, the switch module outputs a corresponding trigger signal according to the control signal to control the power panel to be in standby;
s300, the adjusting module adjusts the voltage value of the trigger signal when the power panel is started.
The invention also provides an electrical device, which comprises a main chip, a power panel and the standby control circuit, wherein the standby control circuit is described in detail above, and the standby control circuit is not described again.
In summary, according to the electrical equipment, the standby control circuit and the control method thereof provided by the present invention, the standby control circuit is respectively connected to the main chip and the power board of the electrical equipment, and includes a protection module, a switch module and an adjustment module; the protection module outputs the control signal output by the main chip to the switch module; when the control signal is a first level signal, the switch module outputs a corresponding trigger signal according to the control signal to control the power panel to start up; when the control signal is a second level signal, the switch module outputs a corresponding trigger signal according to the control signal to control the power panel to be in standby; the adjusting module adjusts the voltage value of the trigger signal when the power panel is started, so that the standby power consumption of the electrical equipment in standby is effectively reduced, and the power panel can be normally started according to application requirements.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the scope of the appended claims.
Claims (5)
1. A standby control circuit is respectively connected with a main chip and a power panel of electrical equipment and is characterized by comprising a protection module, a switch module and an adjusting module; the protection module outputs the control signal output by the main chip to the switch module; when the control signal is a first level signal, the switch module outputs a corresponding trigger signal according to the control signal to control the power panel to start up; when the control signal is a second level signal, the switch module outputs a corresponding trigger signal according to the control signal to control the power panel to be in standby; the adjusting module adjusts the voltage value of the trigger signal when the power panel is started; the switch module comprises a first switch unit and a second switch unit; when the control signal is a first level signal, the first switch unit controls the second switch unit to be conducted according to the control signal, so that the second switch unit outputs a corresponding trigger signal to control the power panel to be started; when the control signal is a second level signal, the first switch unit controls the second switch unit to be turned off according to the control signal, so that the second switch unit outputs a corresponding trigger signal to control the power panel to be in standby; the protection module comprises a protection unit and a voltage division unit, and the protection unit outputs the control signal to the first switch unit; when the first switch unit is conducted according to the control signal, the voltage division unit controls the second switch unit to be conducted according to the conducting state of the first switch unit; when the first switch unit is turned off according to the control signal, the voltage division unit controls the second switch unit to be turned off according to the turn-off state of the first switch unit; the protection unit comprises a second resistor and a third resistor, one end of the second resistor and one end of the third resistor are both connected with the main chip, the other end of the second resistor is connected with the power supply, and the other end of the third resistor is connected with the first switch unit; the voltage dividing unit comprises a fourth resistor and a fifth resistor, one end of the fifth resistor is connected with the first switch unit, the other end of the fifth resistor and one end of the fourth resistor are both connected with the second switch unit, and the other end of the fourth resistor is connected with the power supply; the adjusting module comprises a sixth resistor, one end of the sixth resistor is connected with the power supply, the other end of the sixth resistor is connected with the second switch unit, and the standby control circuit is matched with different power panels through adjustment of the adjusting module;
the second resistor is used for defaulting the control signal to be a high-level signal through a pull-up action; the third resistor is used for protecting the first triode from being damaged by impact current; the power connection end of the fourth resistor and the power connection end of the sixth resistor are respectively connected with the same input power supply, when the control signal is a first level signal, the input power supply is grounded after passing through the fourth resistor and the fifth resistor, and a voltage division for conducting the second switch unit is formed at the connection part of the fourth resistor and the fifth resistor; when the control signal is at a second level, the input end of the second switch unit is pulled up to a high level by an input power supply through the fourth resistor and the sixth resistor, respectively, so that the second switch unit is turned off.
2. The standby control circuit according to claim 1, wherein the first switching unit comprises a first transistor, a base of the first transistor is connected to the protection unit, a collector of the first transistor is connected to the voltage dividing unit, and an emitter of the first transistor is grounded.
3. The standby control circuit according to claim 2, wherein the second switching unit includes a second transistor and a first resistor, a base of the second transistor is connected to the voltage dividing unit, and a collector of the second transistor and one end of the first resistor are connected to the power board; the emitter of the second triode is connected with electricity through the regulating module; the other end of the first resistor is grounded.
4. A control method based on the standby control circuit of any one of claims 1-3, comprising the steps of:
the protection module outputs the control signal output by the main chip to the switch module;
when the control signal is a first level signal, the switch module outputs a corresponding trigger signal according to the control signal to control the power panel to start up; when the control signal is a second level signal, the switch module outputs a corresponding trigger signal according to the control signal to control the power panel to be in standby;
the adjusting module adjusts the voltage value of the trigger signal when the power panel is started.
5. An electrical appliance comprising a main chip and a power strip, characterized in that it further comprises a standby control circuit according to any one of claims 1 to 3.
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| CN202010042592.9A CN111190373B (en) | 2020-01-15 | 2020-01-15 | Electrical equipment, standby control circuit and control method thereof |
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| CN202010042592.9A CN111190373B (en) | 2020-01-15 | 2020-01-15 | Electrical equipment, standby control circuit and control method thereof |
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| CN111190373B true CN111190373B (en) | 2021-12-28 |
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| CN201114445Y (en) * | 2007-06-11 | 2008-09-10 | 青岛海信电器股份有限公司 | Electronic device with idle control circuit |
| CN103425056B (en) * | 2012-05-15 | 2016-05-04 | 珠海格力电器股份有限公司 | Quasi-zero power consumption standby control circuit device and control method |
| CN206833289U (en) * | 2017-05-27 | 2018-01-02 | 上海一诺仪表有限公司 | A kind of slave computer |
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