CN207601560U - A kind of domestic electric appliances controller - Google Patents
A kind of domestic electric appliances controller Download PDFInfo
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- CN207601560U CN207601560U CN201721465436.3U CN201721465436U CN207601560U CN 207601560 U CN207601560 U CN 207601560U CN 201721465436 U CN201721465436 U CN 201721465436U CN 207601560 U CN207601560 U CN 207601560U
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- 230000005611 electricity Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The utility model discloses a kind of domestic electric appliances controllers, are related to control field, which includes：Switching Power Supply, MCU, load unit, driving circuit and regulator circuit, the input terminal connection power supply of Switching Power Supply, the output terminal of Switching Power Supply connects load unit and regulator circuit respectively, the feeder ear of the output terminal connection MCU of regulator circuit, the input terminal of the output terminal connection driving circuit of MCU, the feedback end of the output terminal connecting valve power supply of driving circuit, the application can be under the premise of MCU normal works be ensured, the whole stand-by power consumption of domestic electric appliances controller is greatly reduced, it is made to meet the power consumption requirements less than 0.5W.
Description
Technical field
The utility model is related to control field, especially a kind of domestic electric appliances controller.
Background technology
Standby power is product in shutdown or energy consumption when not exercising its major function, the EC (European of European Union
Community) instruction requirement, the standby power of second stage (2013.1.7) product should be less than 0.5W, but household electrical appliances at this stage
The stand-by power consumption of controller is substantially in 1W or so, it is difficult to meet the requirements.
The electric current when stand-by power consumption for reducing domestic electric appliances controller at present is mainly by reducing standby is realized, that is, selects tool
There is the MCU (Microcontroller Unit, micro-control unit) of standby mode, MCU turns off the mould for not needing to work when standby
Block reduces so as to reduce current drain according to power consumption formula P=U*I, current drain I, and standby power P also accordingly reduces.But
Many MCU do not support that MCU does not allow access into standby mode, therefore in system standby for standby mode or some occasions
The operating current of MCU itself has determined that stand-by power consumption is difficult the power consumption requirements met less than 0.5W.
Utility model content
The present inventor is regarding to the issue above and technical need, it is proposed that a kind of domestic electric appliances controller, this application are treated by reducing
The entirety of domestic electric appliances controller under the premise of MCU normal works are ensured, can be greatly reduced in the output voltage of Switching Power Supply during machine
Stand-by power consumption makes it meet the power consumption requirements less than 0.5W.
The technical solution of the utility model is as follows：
A kind of domestic electric appliances controller, the domestic electric appliances controller include：Switching Power Supply, micro-control unit MCU, load unit, driving
Circuit and regulator circuit, the input terminal connection power supply of Switching Power Supply, the output terminal of Switching Power Supply connect load unit respectively
And regulator circuit, the feeder ear of the output terminal connection MCU of regulator circuit, the input terminal of the output terminal connection driving circuit of MCU drive
The feedback end of the output terminal connecting valve power supply of dynamic circuit, Switching Power Supply are used to be converted to the supply voltage that power supply provides
First voltage simultaneously exports first voltage to load unit and regulator circuit；Regulator circuit is used to first voltage being converted to MCU
Operating voltage, and output services voltage be MCU power supply；MCU is used for when detecting that domestic electric appliances controller is in standby mode, is led to
Overdrive circuit exports standby signal to the feedback end of Switching Power Supply, changes the feedback voltage of Switching Power Supply, while MCU controls man
Load unit in electric controller is stopped in stand-by mode；Switching Power Supply is used for when feedback voltage changes, and is adjusted
Whole is that the supply voltage that power supply provides is converted to second voltage, and second voltage is less than first voltage and more than or equal to MCU
Operating voltage, for exporting second voltage to regulator circuit, regulator circuit is used to second voltage being converted to MCU Switching Power Supply
Operating voltage and output services voltage for MCU power supply.
Its further technical solution is that the output terminal of driving circuit includes the first output terminal and second output terminal, driving
One end of the input terminal connection first resistor of circuit, the other end of first resistor connect the base of second resistance and triode respectively
Pole, the other end of second resistance are connected with the emitter of triode and connect the feeder ear of driving circuit, the collector of triode
Connect photoelectrical coupler first input end, photoelectrical coupler the second input terminal connection 3rd resistor, 3rd resistor it is another
End ground connection；First output terminal of photoelectrical coupler connects the 4th resistance, and the other end of the 4th resistance connects the first of driving circuit
Output terminal, the second output terminal of the second output terminal connection driving circuit of photoelectrical coupler, the first output terminal and second output terminal
The feedback end of connecting valve power supply respectively.
Its further technical solution is that in the voltage range of 12~15V, the operating voltage of MCU is first voltage
3.3V or 5V, second voltage is in the voltage range of 5~7V.
The advantageous effects of the utility model are：
1st, MCU by the feedback pin of driving circuit connecting valve power supply, is not needed in standby mode in the application
During loaded work piece, by changing feedback voltage, so as to reduce the output voltage of Switching Power Supply, while the output voltage after reduction is still
It can so ensure the normal work of MCU, under the premise of operating current is immovable, the entirety for significantly reducing domestic electric appliances controller is treated
Machine power consumption can meet the power consumption standard that stand-by power consumption is less than 0.5W.
2nd, circuit control disclosed in the present application is simple of low cost, and reliability is high, versatile, can be adapted for all
Controller is readily applicable to any kind of Switching Power Supply.And original MCU schemes do not need to change, and save research and development and verification
Period is all suitable for the MCU with or without standby mode, equally can be in its original for the MCU with standby mode
On the basis of further reduce standby work(.
Description of the drawings
Fig. 1 is the circuit diagram of domestic electric appliances controller disclosed in the present application.
Fig. 2 is the circuit diagram of the driving circuit in domestic electric appliances controller.
Fig. 3 is the connection diagram of driving circuit and Switching Power Supply in domestic electric appliances controller.
Specific embodiment
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings.
This application discloses a kind of domestic electric appliances controllers, please refer to Fig.1 the circuit structure diagram of the domestic electric appliances controller shown, should
The circuit of domestic electric appliances controller includes Switching Power Supply, MCU (Microcontroller Unit, micro-control unit), load unit, drive
Dynamic circuit and regulator circuit.Switching Power Supply in the application is the various types such as inverse-excitation type switch power-supply, BULK formula Switching Power Supplies
Switching Power Supply, Switching Power Supply input terminal connection power supply, power supply can be that mains supply can also be accumulator
Power supply etc., Switching Power Supply are used to the supply voltage that power supply provides being converted to direct voltage output, in domestic electric appliances controller just
Often during work, Switching Power Supply usually exports 12~15V DC voltages, and Fig. 1 is by taking Switching Power Supply exports 15V voltages as an example.Switch electricity
The output terminal in source connects load unit and regulator circuit respectively, and load unit includes each load in domestic electric appliances controller, voltage stabilizing
Circuit can be implemented as a LDO (low dropout regulator, low pressure difference linear voltage regulator).Switching Power Supply output 12~
Each loaded work piece of 15V DC voltage normal driving load units, 12~15V DC voltages warp of Simultaneous Switching power supply output
Cross regulator circuit to be depressured, the feeder ear of the output terminal of regulator circuit connection MCU, regulator circuit Switching Power Supply is exported 12
It is MCU power supplies after the operating voltage that the decompression of~15V DC voltages is MCU, the operating voltage of MCU is 3.3V voltages under normal conditions
Or 5V voltages, for Fig. 1 by taking the operating voltage of MCU is 3.3V as an example, the MCU in the application can be the MCU for supporting standby mode,
Can be the MCU for not supporting standby mode.The input terminal of the output terminal connection driving circuit of MCU, the output terminal of driving circuit connect
The feedback end of Switching Power Supply is connect, MCU can change the feedback voltage of Switching Power Supply by driving circuit.
The circuit of increased driving circuit is simple in the application, please refers to Fig.2 the circuit diagram shown, the input of driving circuit
One end of IO connection first resistors R1 is held, the other end of first resistor R1 connects the base of second resistance R2 and triode J1 respectively
Pole, the other end of second resistance R2 are connected with the emitter of triode J1 and connect the feeder ear of driving circuit, driving circuit
Feeder ear is generally also the output terminal for connecting regulator circuit, is powered after being depressured by regulator circuit, therefore driving circuit is usual
Identical with the operating voltage of MCU, Fig. 2 is used by driving circuit for 3.3V voltages.The collector connection photoelectricity coupling of triode J1
The first input end of clutch U1, the second input terminal connection 3rd resistor R3 of photoelectrical coupler U1, the other end of 3rd resistor R3
Ground connection；The first output terminal of photoelectrical coupler U1 connects the 4th resistance R4, the other end connection driving circuit of the 4th resistance R4
The second output terminal FB of the second output terminal connection driving circuit of first output terminal FB1, photoelectrical coupler U1, the first output terminal
The feedback end of FB1 and second output terminal FB difference connecting valve power supplys, driving circuit receive switch electricity by the first output terminal FB1
The signal of source transmission sends signal by second output terminal FB to Switching Power Supply.Driving circuit and the company of traditional Switching Power Supply
Connecing schematic diagram can be with reference chart 3.
The operation principle of domestic electric appliances controller shown in above-mentioned Fig. 1-Fig. 3 is as follows：
Step 1：Under the normal operating conditions of domestic electric appliances controller, the supply voltage that Switching Power Supply provides power supply turns
It is changed to first voltage, output first voltage to load unit and regulator circuit；First voltage is converted to MCU's by regulator circuit
Operating voltage, and output services voltage is powered for MCU.As described above, it is generally the case that the first voltage is in the electricity of 12~15V
In the range of pressure, the operating voltage of MCU is 3.3V or 5V.
Step 2：When MCU detects that domestic electric appliances controller is in standby mode, standby signal is exported extremely by driving circuit
The feedback end of Switching Power Supply changes the feedback voltage of Switching Power Supply, and standby signal is usually preset fixed signal, while MCU
Load unit in control domestic electric appliances controller is stopped in stand-by mode.
Step 3：Switching Power Supply is adjusted to the supply voltage for providing power supply since feedback voltage changes
Be converted to second voltage, second voltage is less than first voltage and the operating voltage more than or equal to MCU, when first voltage 12~
When the voltage range of 15V is interior, the operating voltage of MCU is 3.3V or 5V, second voltage is in the voltage range of 5~7V.
Step 4：Switching Power Supply exports second voltage to regulator circuit, and second voltage is converted to the work of MCU by regulator circuit
Make voltage, and output services voltage is powered for MCU namely when domestic electric appliances controller is standby, since each load does not need to work,
Therefore the output voltage of Switching Power Supply can be turned down, and when the output voltage of Switching Power Supply is down to second voltage from first voltage
When, it still can ensure the voltage needed for MCU normal works, can ensure the normal work of MCU.Simultaneously according to power consumption formula P
=U*I is it is found that the reduction of the output voltage due to Switching Power Supply so that the stand-by power consumption of domestic electric appliances controller also reduces.Such as
MCU use 3.3V voltages when, first voltage be 15V when, second voltage can be 5V, then the output voltage of Switching Power Supply reduces
2/3rds, and operating current does not change, then corresponding stand-by power consumption also significantly reduces 2/3rds, can meet standby work(
Power consumption requirements of the consumption less than 0.5W.
Above-described is only the preferred embodiment of the application, and the utility model is not limited to above example.It can manage
Solution, those skilled in the art do not depart from the utility model spirit and design under the premise of directly export or associate other
It improves and changes, be considered as being included within the scope of protection of this utility model.
Claims (3)
1. a kind of domestic electric appliances controller, which is characterized in that the domestic electric appliances controller includes：Switching Power Supply, is born micro-control unit MCU
Carrier unit, driving circuit and regulator circuit, the input terminal connection power supply of the Switching Power Supply, the output of the Switching Power Supply
End connects the load unit and the regulator circuit respectively, and the output terminal of the regulator circuit connects the feeder ear of the MCU,
The output terminal of the MCU connects the input terminal of the driving circuit, and the output terminal of the driving circuit connects the Switching Power Supply
Feedback end, the Switching Power Supply be used for by the supply voltage that the power supply provides be converted to first voltage and export described in
First voltage is to the load unit and the regulator circuit；The regulator circuit is used to the first voltage being converted to institute
The operating voltage of MCU is stated, and exports the operating voltage and powers for the MCU；The MCU is used to detect that the family is automatically controlled
When device processed is in standby mode, standby signal is exported to the feedback end of the Switching Power Supply by the driving circuit, changes institute
The feedback voltage of Switching Power Supply is stated, while the MCU controls the load unit in the domestic electric appliances controller in the standby mode
Under be stopped；The Switching Power Supply is used for when feedback voltage changes, and is adjusted to the electricity for providing the power supply
Source voltage is converted to second voltage, and the second voltage is less than the first voltage and the operating voltage more than or equal to the MCU,
For exporting the second voltage to the regulator circuit, the regulator circuit is used for the second voltage Switching Power Supply
It is converted to the operating voltage of the MCU and exports the operating voltage and power for the MCU.
2. domestic electric appliances controller according to claim 1, which is characterized in that it is defeated that the output terminal of the driving circuit includes first
Outlet and second output terminal, one end of the input terminal connection first resistor of the driving circuit, the other end of the first resistor
Second resistance and the base stage of triode are connected respectively, and the other end of the second resistance is connected simultaneously with the emitter of the triode
Connect the feeder ear of the driving circuit, the first input end of the collector connection photoelectrical coupler of the triode, the light
The second input terminal connection 3rd resistor of electric coupler, the other end ground connection of the 3rd resistor；The of the photoelectrical coupler
One output terminal connects the 4th resistance, and the other end of the 4th resistance connects the first output terminal of the driving circuit, the light
The second output terminal of electric coupler connects the second output terminal of the driving circuit, first output terminal and second output
End connects the feedback end of the Switching Power Supply respectively.
3. domestic electric appliances controller according to claim 1 or 2, which is characterized in that the first voltage is in the voltage of 12~15V
In the range of, the operating voltage of the MCU is 3.3V or 5V, and the second voltage is in the voltage range of 5~9V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721465436.3U CN207601560U (en) | 2017-11-06 | 2017-11-06 | A kind of domestic electric appliances controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721465436.3U CN207601560U (en) | 2017-11-06 | 2017-11-06 | A kind of domestic electric appliances controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207601560U true CN207601560U (en) | 2018-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721465436.3U Expired - Fee Related CN207601560U (en) | 2017-11-06 | 2017-11-06 | A kind of domestic electric appliances controller |
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| CN (1) | CN207601560U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111358355A (en) * | 2018-12-26 | 2020-07-03 | 北京奇虎科技有限公司 | Standby control circuit and sweeping robot |
-
2017
- 2017-11-06 CN CN201721465436.3U patent/CN207601560U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111358355A (en) * | 2018-12-26 | 2020-07-03 | 北京奇虎科技有限公司 | Standby control circuit and sweeping robot |
| CN111358355B (en) * | 2018-12-26 | 2023-02-17 | 北京奇虎科技有限公司 | Standby control circuit and sweeping robot |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180710 Termination date: 20211106 |