CN109407577A - A kind of wake-up circuit, awakening method and electric cooker - Google Patents
A kind of wake-up circuit, awakening method and electric cooker Download PDFInfo
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- CN109407577A CN109407577A CN201811162795.0A CN201811162795A CN109407577A CN 109407577 A CN109407577 A CN 109407577A CN 201811162795 A CN201811162795 A CN 201811162795A CN 109407577 A CN109407577 A CN 109407577A
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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
- G05B2219/21—Pc I-O input output
- G05B2219/21119—Circuit for signal adaption, voltage level shift, filter noise
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Abstract
The invention discloses a kind of wake-up circuit, awakening method and electric cookers, wherein wake-up circuit, including single-chip microcontroller one, single-chip microcontroller two and power supply one, the wake-up pin of the single-chip microcontroller two is connected to the communication pin of single-chip microcontroller one and single-chip microcontroller two, so that single-chip microcontroller one is issued wake-up signal to single-chip microcontroller two after the power-up, operating mode is switched to by suspend mode when single-chip microcontroller two receives wake-up signal；Compared with prior art, The present invention reduces the lines between single-chip microcontroller, single-chip microcontroller pin resource is occupied less, traditional single-chip microcontroller wake-up is eliminated to need by upper electric pulse, the defect that can not be waken up if missing upper electric pulse when avoiding 220V power supply, is waken up using zero cross signal and needs additional the problem of increasing zero-crossing signal circuit, using present invention saves hardware resource, applicability is more extensive.
Description
Technical field
The present invention relates to electronic control circuit more particularly to a kind of wake-up circuits, awakening method and electric cooker.
Background technique
In order to reduce the power consumption of machine system, it is often necessary to which single-chip microcontroller is in low-power consumption mode.Single-chip microcontroller is waken up at this stage
Method be external interrupt wakeup, the method as described in patent CN102881084B is connected by a pin of single-chip microcontroller 2
The interrupt pin of single-chip microcontroller 1 into suspend mode.So consume a pin resource of single-chip microcontroller 1.If two single-chip microcontrollers need
It to be connected by aerial lug, then need to increase the cost of aerial lug, if necessary to multi computer communication, cost also be will increase.Together
Shi Xianyou awakening method also has the disadvantage that 1, traditional single-chip microcontroller wake-up is needed by upper electric pulse, if missed
Electric pulse can not then wake up.2, it when 220V powers, is waken up using zero cross signal and needs additional increase zero-crossing signal circuit.3, part
Single-chip microcontroller does not have communication arousal function.
It is called out so how to design a kind of single-chip microcontroller suspend mode that can be reduced aerial lug, occupy single-chip microcontroller pin resource less
Wake up method, be in the industry urgent need to resolve the technical issues of.
Summary of the invention
In order to solve the defect existing in the prior art for occupying single-chip microcontroller pin resource, the present invention proposes a kind of wake-up electricity
Road and awakening method and the electric cooker for using the circuit and method.
The technical solution adopted by the present invention is that a kind of wake-up circuit is designed, including single-chip microcontroller one, single-chip microcontroller two and power supply one,
The wake-up pin of the single-chip microcontroller two is connected to the communication pin of single-chip microcontroller one and single-chip microcontroller two, make single-chip microcontroller one after the power-up to
Single-chip microcontroller two issues wake-up signal, switchs to operating mode by suspend mode when single-chip microcontroller two receives wake-up signal.
Wake-up circuit further includes the power supply two powered to single-chip microcontroller two, and the voltage of the power supply two is less than the power supply one.
The power supply one connects the anode of first diode D1, and the power supply two connects the anode of the second diode D2, the
The cathode of one diode D1 and the second diode D2 connect power supply common end, which powers to the single-chip microcontroller two.
The communication pin of the single-chip microcontroller one passes through first resistor R1 connection common end, the communication pin of the single-chip microcontroller two
By 3rd resistor R3 connection common end, the wake-up pin of the single-chip microcontroller two is described by the 4th resistance R4 connection common end
Common end passes through second resistance R2 connection power supply common end.
In one embodiment, the normal pins of the single-chip microcontroller two pass through the 5th resistance R5 connection common end.
In another embodiment, the common end is grounded by the 5th resistance R5.
A kind of awakening method of above-mentioned wake-up circuit enters operating mode after single-chip microcontroller one powers on, and to single-chip microcontroller two
Send wake-up signal；Operating mode is entered by suspend mode after single-chip microcontroller two receives wake-up signal.
The single-chip microcontroller one inquires whether single-chip microcontroller two has woken up, and if do not waken up, continues to send wake-up signal, such as
It has been be waken up that, stop sending wake-up signal；It is issued after single-chip microcontroller two switchs to operating mode from suspend mode to single-chip microcontroller one
Awake signal.
Above-mentioned awakening method, including following operating procedure
The single-chip microcontroller one includes following operating procedure:
Step S10. single-chip microcontroller operates normally；
Whether step S11. detection external condition should wake up single-chip microcontroller two, should not wake up, be transferred to step S10, it should wake up
Then it is transferred to step S12；
Step S12. sends wake-up signal to single-chip microcontroller two；
Whether step S13. inquiry single-chip microcontroller two has woken up, and if not being waken up, is transferred to step S12, if being waken up, turns
Enter step S14；
Step S14. stops wake operation, is transferred to step S10；
The single-chip microcontroller two includes following operating procedure:
Step S20. single-chip microcontroller two enters operating mode；
Step S21. detects whether external condition should enter suspend mode, is transferred to step if it should not enter suspend mode
S20 is transferred to step S22 if it should enter suspend mode；
Step S22. single-chip microcontroller enters suspend mode；
Step S23. is detected whether to receive wake-up signal, wake-up signal is persistently waited if not receiving wake-up signal, such as receives and calls out
Awake signal is then transferred to step S24；
Step S24. single-chip microcontroller two enters operating mode and sends signal of having waken up to single-chip microcontroller one, is transferred to step S20.
The method whether detect external condition in the step S11 should wake up single-chip microcontroller two includes: detection single-chip microcontroller one
Power supply, power supply be initial power-on should then wake up single-chip microcontroller two, power supply is non-initial to be powered on, and single-chip microcontroller two should not be waken up.
Detecting external condition in the step S21 whether to enter the method for suspend mode includes: detection single-chip microcontroller two
Supply voltage, do not enter suspend mode if supply voltage is higher than threshold value, if supply voltage is lower than entering suspend mode mould if threshold value
Formula.
The invention also discloses a kind of electric cooker, the electric cooker has used above-mentioned wake-up circuit.
The invention also discloses a kind of electric cooker, internal single-chip microcontroller uses above-mentioned awakening method.
Compared with prior art, The present invention reduces the lines between single-chip microcontroller, occupy single-chip microcontroller pin resource less, eliminate
Traditional single-chip microcontroller wake-up is needed by upper electric pulse, and the defect that can not wake up if missing upper electric pulse avoids
When 220V powers, is waken up using zero cross signal and need additional the problem of increasing zero-crossing signal circuit, using present invention saves hard
Part resource, applicability are more extensive.
Detailed description of the invention
Below with reference to embodiment and attached drawing, the present invention is described in detail, in which:
Fig. 1 is the line map of two connect power supplys of single-chip microcontroller；
Fig. 2 is two microcontroller communication connection schematic diagrams；
Fig. 3 is two microcontroller communication connection schematic diagrams in preferred embodiment；
Fig. 4 is two microcontroller communication connection schematic diagrams in another embodiment；
Fig. 5 is the control method flow chart of single-chip microcontroller one；
Fig. 6 is the control method flow chart of single-chip microcontroller two.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is described in further detail.It should be appreciated that specific embodiment described herein is used only for explaining the present invention, not
For limiting the present invention.
The invention discloses a kind of wake-up circuits, referring to the line map of the connect power supply of two single-chip microcontrollers shown in fig. 1, wherein
Single-chip microcontroller one is mainly used for controlling high-power components (heating element in such as electric cooker), and mainly control small-power is first for single-chip microcontroller two
Part (display element in such as electric cooker).Power supply one provides electric energy by alternating current, has the characteristics that energy is powerful, continual and steady,
It is powered when normal work from power supply one to single-chip microcontroller one and two.Power supply two is battery powered, with energy is small, can be detached from alternating current
Feature, when power supply one stops power-on time, single-chip microcontroller one is powered off, and power supply two is only powered to single-chip microcontroller two；At this time single-chip microcontroller two into
Enter suspend mode (also known as standby mode or low-power consumption mode), it is energy saving whereby.Power supply one is for power supply two, voltage
It is higher.
Referring to Fig. 2 shows communication connection schematic diagram wrap the technical solution adopted by the present invention is that design a kind of wake-up circuit
Include single-chip microcontroller one, single-chip microcontroller two and power supply one, the wake-up pin of the single-chip microcontroller two is connected to single-chip microcontroller one and single-chip microcontroller two
Pin is communicated, so that single-chip microcontroller one is issued wake-up signal to single-chip microcontroller two after the power-up, by stopping when single-chip microcontroller two receives wake-up signal
Sleep mode switchs to operating mode.Structure can reduce the line between single-chip microcontroller whereby, occupy single-chip microcontroller pin resource less.
In the preferred embodiment, wake-up circuit further includes the power supply two powered to single-chip microcontroller two, the voltage of the power supply two
Less than the power supply one.The power supply one connects the anode of first diode D1, and the power supply two connects the second diode D2's
The cathode of anode, first diode D1 and the second diode D2 connects power supply common end, and the power supply common end is to the single-chip microcontroller
Two power supplies.
Referring to Fig. 2 shows two microcontroller communication connection schematic diagrams, the communication pin of the single-chip microcontroller one passes through first
The communication pin of resistance R1 connection common end, the single-chip microcontroller two passes through 3rd resistor R3 connection common end, the single-chip microcontroller two
Wake-up pin by the 4th resistance R4 connection common end, the common end passes through second resistance R2 connection power supply common end.
Two microcontroller communication connection schematic diagrams in the preferred embodiment shown referring to Fig. 3, the single-chip microcontroller two it is common
Pin passes through the 5th resistance R5 connection common end.
Course of work of the present invention is described in detail below with reference to Fig. 1 and Fig. 3: the voltage of power supply one is greater than power supply two, under normal operation
Powered by power supply one, power supply one power off after powered by power supply two, single-chip microcontroller two detect supply voltage reduce after, single-chip microcontroller two into
Enter suspend mode (low power consumpting state).After the equal recovery of power supplys one powers on, single-chip microcontroller sends wake-up signal to single-chip microcontroller two at the beginning.
After single-chip microcontroller two enters suspend mode, communication pin is set as input port, wakes up pin and is set as input port, in addition there are one common
Pin exports low level, and the effect of normal pins is to enable communication pin and wake up pin keep low level in the hibernation mode.3
A pin is linked together by resistance.After equal power supplys one restore, the communication pin of single-chip microcontroller one first exports high level and exports again
Low level (i.e. the wake-up signal), because the communication pin is connect with the wake-up pin of single-chip microcontroller two, wakes up the electricity of pin
Flat to become low level from high level, single-chip microcontroller two is connected to signal and is waken up.Single-chip microcontroller one has sent wake-up signal, and it is single to start detection
Whether piece machine two has response, if do not replied, repeats to send wake-up signal at interval of a period of time, until receiving single-chip microcontroller
Two signals of having waken up sent.In the normal operating mode, single-chip microcontroller two closes arousal function, and the level change for communicating pin will not
There is any influence to single-chip microcontroller two.Since the resistance value for meeting the 5th resistance R5 of two normal pins of single-chip microcontroller is much smaller than second resistance
R2, the communication of the two of the level of normal pins single-chip microcontroller influences little in the normal operating mode.But in normal operation mode
It is preferable that lower normal pins are set as high level.R1=R3=R4 in Fig. 2, R2 are much larger than R1, and R5 is much larger than R2, wherein one group of example
For R1=R3=R4=470 ohm, R2=10K ohm, R5=120K ohm.
In other one embodiment, the common end is grounded by the 5th resistance R5.Referring to Fig. 4, replaced as one kind
Scheme is changed, two normal pins of single-chip microcontroller are not had to, it, equally can be during two suspend mode of single-chip microcontroller by common end by big resistance eutral grounding
The wake-up pin is drawn as low level, to wait the wake-up signal.It will lead to communication pin level in the program slightly
It reduces, but not influences communication.
Referring to Fig. 2 shows two microcontroller communication connection schematic diagrams in, no normal pins also connect not over resistance
Ground, it is high level that pin and communication pin are waken up in suspend mode, and it is effective should to be changed to low level for wake-up signal in such scheme.
The invention also discloses a kind of awakening methods of above-mentioned wake-up circuit, and Working mould is entered after single-chip microcontroller one powers on
Formula, and wake-up signal is sent to single-chip microcontroller two；Operating mode is entered by suspend mode after single-chip microcontroller two receives wake-up signal.
The single-chip microcontroller one inquires whether single-chip microcontroller two has woken up, and if do not waken up, continues to send wake-up signal, such as
It has been be waken up that, stop sending wake-up signal；It is issued after single-chip microcontroller two switchs to operating mode from suspend mode to single-chip microcontroller one
Awake signal.
Referring in the preferred embodiment shown in Fig. 5, the single-chip microcontroller one includes following operating procedure:
Step S10. single-chip microcontroller operates normally；
Whether step S11. detection external condition should wake up single-chip microcontroller two, should not wake up, be transferred to step S10, it should wake up
Then it is transferred to step S12；
Step S12. sends wake-up signal to single-chip microcontroller two；
Whether step S13. inquiry single-chip microcontroller two has woken up, and if not being waken up, is transferred to step S12(and continues to send wake-up letter
Number), if being waken up, it is transferred to step S14；
Step S14. stops wake operation, is transferred to step S10；
Referring in the preferred embodiment shown in Fig. 6, the single-chip microcontroller two includes following operating procedure:
Step S20. single-chip microcontroller two enters operating mode；
Step S21. detects whether external condition should enter suspend mode, is transferred to step if it should not enter suspend mode
S20 is transferred to step S22 if it should enter suspend mode；
Step S22. single-chip microcontroller enters suspend mode；
Step S23. is detected whether to receive wake-up signal, wake-up signal is persistently waited if not receiving wake-up signal, such as receives and calls out
Awake signal is then transferred to step S24；
Step S24. single-chip microcontroller two enters operating mode and sends signal of having waken up to single-chip microcontroller one, is being transferred to step S20(single-chip microcontroller just
Often operation).
In the preferred embodiment, detect whether external condition should wake up the method packet of single-chip microcontroller two in the step S11
Include: the power supply of detection single-chip microcontroller one, power supply are that initial power-on should then wake up single-chip microcontroller two, and non-initial power on of power supply then should not
Wake up single-chip microcontroller two.
In the preferred embodiment, detect whether external condition should enter the method packet of suspend mode in the step S21
Include: the supply voltage of detection single-chip microcontroller two does not enter suspend mode if supply voltage is higher than threshold value, as supply voltage is lower than threshold
Value then enters suspend mode.Referring to the line map of the connect power supply of two single-chip microcontrollers shown in fig. 1, one voltage of power supply is higher than power supply two
Voltage, the threshold value is between power supply one and power supply two.The connect voltage of single-chip microcontroller two is higher than threshold value, and representative is that power supply one is supplying
Electricity；Voltage is lower than threshold value, and representative is that power supply two is being powered.
The invention also discloses a kind of electric cooker, the electric cooker has used above-mentioned wake-up circuit.Wherein single-chip microcontroller one
It is mainly used for controlling heating element, single-chip microcontroller two mainly controls display element.
The invention also discloses a kind of electric cooker, internal single-chip microcontroller uses above-mentioned awakening method.
Above embodiments are by way of example only, non-to provide constraints.It is any without departing from the application spirit and scope, and to it
The equivalent modifications or change of progress, shall be included in the scope of claims of this application.
Claims (13)
1. a kind of wake-up circuit, including single-chip microcontroller one, single-chip microcontroller two and power supply one, which is characterized in that the single-chip microcontroller two is called out
Awake pin is connected to the communication pin of single-chip microcontroller one and single-chip microcontroller two, issues single-chip microcontroller one to single-chip microcontroller two after the power-up and wakes up
Signal switchs to operating mode by suspend mode when single-chip microcontroller two receives wake-up signal.
2. wake-up circuit as described in claim 1, which is characterized in that it further include the power supply two powered to single-chip microcontroller two, it is described
The voltage of power supply two is less than the power supply one.
3. wake-up circuit as claimed in claim 2, which is characterized in that the power supply one connects the anode of first diode D1,
The cathode connection power supply of the anode of second diode D2 of the connection of power supply two, first diode D1 and the second diode D2 are public
End, which powers to the single-chip microcontroller two.
4. wake-up circuit as claimed in claim 3, which is characterized in that the communication pin of the single-chip microcontroller one passes through first resistor
R1 connection common end, the communication pin of the single-chip microcontroller two by 3rd resistor R3 connection common end, call out by the single-chip microcontroller two
Pin wake up by the 4th resistance R4 connection common end, the common end passes through second resistance R2 connection power supply common end.
5. wake-up circuit as claimed in claim 4, which is characterized in that the normal pins of the single-chip microcontroller two pass through the 5th resistance
R5 connection common end.
6. wake-up circuit as claimed in claim 4, which is characterized in that the common end is grounded by the 5th resistance R5.
7. a kind of awakening method using any one of claim 1 to 6 wake-up circuit, which is characterized in that when single-chip microcontroller one powers on
Enter operating mode afterwards, and sends wake-up signal to single-chip microcontroller two；After single-chip microcontroller two receives wake-up signal by suspend mode into
Enter operating mode.
8. awakening method as claimed in claim 7, which is characterized in that the single-chip microcontroller one inquire single-chip microcontroller two whether by
It wakes up, if do not waken up, continues to send wake-up signal, if being waken up, stop sending wake-up signal；When single-chip microcontroller two is by suspend mode
Mode switchs to wake up signal to the sending of single-chip microcontroller one after operating mode.
9. awakening method as claimed in claim 8 characterized by comprising
The single-chip microcontroller one includes following operating procedure:
Step S10. single-chip microcontroller operates normally；
Whether step S11. detection external condition should wake up single-chip microcontroller two, should not wake up, be transferred to step S10, it should wake up
Then it is transferred to step S12；
Step S12. sends wake-up signal to single-chip microcontroller two；
Whether step S13. inquiry single-chip microcontroller two has woken up, and if not being waken up, is transferred to step S12, if being waken up, turns
Enter step S14；
Step S14. stops wake operation, is transferred to step S10；
The single-chip microcontroller two includes following operating procedure:
Step S20. single-chip microcontroller two enters operating mode；
Step S21. detects whether external condition should enter suspend mode, is transferred to step if it should not enter suspend mode
S20 is transferred to step S22 if it should enter suspend mode；
Step S22. single-chip microcontroller enters suspend mode；
Step S23. is detected whether to receive wake-up signal, wake-up signal is persistently waited if not receiving wake-up signal, such as receives and calls out
Awake signal is then transferred to step S24；
Step S24. single-chip microcontroller two enters operating mode and sends signal of having waken up to single-chip microcontroller one, is transferred to step S20.
10. awakening method as claimed in claim 8, which is characterized in that detect external condition in the step S11 and whether should
The method for waking up single-chip microcontroller two includes: to detect the power supply of single-chip microcontroller one, and power supply is that initial power-on should then wake up single-chip microcontroller two, electricity
Source is non-initial to be powered on, and single-chip microcontroller two should not be waken up.
11. awakening method as claimed in claim 8, which is characterized in that detect external condition in the step S21 and whether should
Method into suspend mode includes: to detect the supply voltage of single-chip microcontroller two, does not enter suspend mode if supply voltage is higher than threshold value
Mode enters suspend mode if supply voltage is lower than threshold value.
12. a kind of electric cooker, which is characterized in that the electric cooker has used wake-up electricity as claimed in any one of claims 1 to 6
Road.
13. a kind of electric cooker, which is characterized in that the electric cooker uses the described in any item awakening methods of claim 7 to 11.
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| CN201811162795.0A CN109407577B (en) | 2018-09-30 | 2018-09-30 | Wake-up circuit, wake-up method and electric cooker |
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| CN201811162795.0A CN109407577B (en) | 2018-09-30 | 2018-09-30 | Wake-up circuit, wake-up method and electric cooker |
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| CN109407577B (en) | 2021-05-25 |
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