CN104678831A - Electric cooking device as well as power failure recovery device and power failure recovery control method thereof - Google Patents
Electric cooking device as well as power failure recovery device and power failure recovery control method thereof Download PDFInfo
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- CN104678831A CN104678831A CN201410467015.9A CN201410467015A CN104678831A CN 104678831 A CN104678831 A CN 104678831A CN 201410467015 A CN201410467015 A CN 201410467015A CN 104678831 A CN104678831 A CN 104678831A
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- 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
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Abstract
The invention discloses a power failure recovery device of an electric cooking device. The power failure recovery device comprises a zero crossing detection circuit, a power failure time delay circuit and a control circuit, wherein the zero crossing detection circuit detects zero crossing signals of alternating current commercial power input into the electric cooking device; the power failure time delay circuit detects the power failure time of the electric cooking device; the control circuit is respectively connected with the zero crossing detection circuit and the power failure time delay circuit, and the control circuit judges whether the electric cooking device generates power failure or not according to the zero crossing signals, and judges whether the electric cooking device is controlled to recover the work state during the power failure according to the power failure time of the electric cooking device during the re-electrification after the power failure of the electric cooking device. The power failure recovery device has the advantages that the power failure time of the electric cooking device during the re-electrification can be judged, and whether the electric cooking device is controlled to recover the work state during the power failure or not is judged according to the power failure time, so the requirements of users are sufficiently met, and the experience of the users is improved. The invention also discloses the electric cooking device and a power failure recovery method of the electric cooking device.
Description
Technical field
The present invention relates to living electric apparatus technical field, particularly a kind of electric cooking pot power interruption recovering device, a kind of there is the electric cooking pot of this power interruption recovering device and a kind of power interruption recovering controlling method of electric cooking pot.
Background technology
Along with the high speed development of electronic technology, the function of electronic micro-wave oven is more and more abundanter, and present micro-wave oven not only can arrange cooking length of time, firepower, can also arrange clock, demo mode and more customizing mode.
But existing electronic micro-wave oven, when powering on again after power cut-off, just resets to original state when computer board powers on.Such as, when user is provided with clock, if unexpected power cut-off a few second, at this moment computer board has reset to original state after powering on, and clock is also initial time, and such user just must reset once, bring trouble to the use of user, affect Consumer's Experience.
In correlation technique, duty when also having micro-wave oven can preserve micro-wave oven power-off after a loss of power, returns to duty during power-off when micro-wave oven re-powers.But if user allowed micro-wave oven power on every one day again, if duty when now micro-wave oven returns to power-off, obvious clock is not right, mode of operation may user be wanted, and also can make troubles to user.
Summary of the invention
Object of the present invention is intended at least solve above-mentioned technological deficiency.
For this reason, first object of the present invention is the power interruption recovering device proposing a kind of electric cooking pot, the power-off time of electric cooking pot can be judged when re-powering, judge whether to control duty when electric cooking pot returns to power-off according to power-off time, fully meet the needs of user, improve Consumer's Experience.
Second object of the present invention is to propose a kind of electric cooking pot.3rd object of the present invention is the power interruption recovering controlling method proposing a kind of electric cooking pot.
For achieving the above object, the power interruption recovering device of a kind of electric cooking pot that one aspect of the present invention embodiment proposes, comprising: zero cross detection circuit, and described zero cross detection circuit detects the zero cross signal being input to the electric main of electric cooking pot; Detect the power-off delay circuit of the power-off time of described electric cooking pot; And control circuit, described control circuit is connected with described power-off delay circuit respectively with described zero cross detection circuit, described control circuit judges the whether power-off of described electric cooking pot according to described zero cross signal, and judges whether to control duty when described electric cooking pot returns to power-off according to the power-off time of described electric cooking pot when re-powering after described electric cooking pot power-off.
According to the power interruption recovering device of the electric cooking pot of the embodiment of the present invention, detect by zero cross detection circuit the zero cross signal being input to the electric main of electric cooking pot and judge the whether power-off of electric cooking pot, if judge electric cooking pot power-off, then preserve duty during electric cooking pot power-off, and the power-off time of electric cooking pot when re-powering after electric cooking pot power-off, is detected by power-off delay circuit, then control circuit judges whether to control when electric cooking pot returns to power-off according to the power-off time of electric cooking pot duty, such as when power-off time is shorter, control circuit controls duty when electric cooking pot returns to power-off, control control circui electricity cooking pot when power-off time is longer and reset to original state, user is needed to reset the mode of operation etc. of electric cooking pot after avoiding electric cooking pot short supply interruption to power on again, it also avoid duty when still to return to original power-off after the long-time power-off of electric cooking pot powers on again and the clock disorder that causes waits puzzlement, fully meet the needs of user, bring conveniently to user, improve Consumer's Experience.
Wherein, when the power-off time of described electric cooking pot is less than Preset Time, the described electric cooking pot of described control circuit control returns to duty during power-off; When the power-off time of described electric cooking pot is more than or equal to described Preset Time, described control circuit controls described electric cooking pot and resets to original state.
According to one embodiment of present invention, described Preset Time is arranged according to described power-off delay circuit.
According to one embodiment of present invention, described power-off delay circuit comprises: the first metal-oxide-semiconductor, and the drain electrode of described first metal-oxide-semiconductor is connected with default power supply, and the grid of described first metal-oxide-semiconductor is connected with described control circuit; Second metal-oxide-semiconductor, the drain electrode of described second metal-oxide-semiconductor is connected with the source electrode of described first metal-oxide-semiconductor, and the grid of described second metal-oxide-semiconductor is connected with described control circuit; First triode, the base stage of described first triode is connected with the source electrode of described second metal-oxide-semiconductor, the grounded emitter of described first triode, and the collector of described first triode is connected with described control circuit; First resistance, one end of described first resistance is connected with described default power supply, and the other end of described first resistance is connected with described control circuit with the collector of described first triode respectively; First electrochemical capacitor, the positive terminal of described first electrochemical capacitor is connected with the drain electrode of described second metal-oxide-semiconductor with the source electrode of described first metal-oxide-semiconductor respectively, the negative pole end ground connection of described first electrochemical capacitor; Second resistance, described second resistance is in parallel with described first electrochemical capacitor.
The power-off delay circuit of the embodiment of the present invention only adopts several simple discrete component, and without the need to increasing very large cost, and circuit is simple and reliable, also accurately can control Preset Time.
According to one embodiment of present invention, described control circuit comprises: control chip, first time delay pin of described control chip is connected with the grid of described first metal-oxide-semiconductor, second time delay pin of described control chip is connected with the grid of described second metal-oxide-semiconductor, and the 3rd time delay pin of described control chip is connected with the collector of described first triode; First electric capacity, one end ground connection of described first electric capacity, the other end of described first electric capacity is connected with the first pin of described control chip; Second electric capacity, one end ground connection of described second electric capacity, the other end of described second electric capacity is connected with the second pin of described control chip; Crystal oscillator, described crystal oscillator is connected between the other end of described first electric capacity and the other end of described second electric capacity; 3rd resistance, described 3rd resistance is in parallel with described crystal oscillator.
According to one embodiment of present invention, described zero cross detection circuit comprises: the 4th resistance, and one end of described 4th resistance is connected with the first end of described electric main; First diode, the negative electrode of described first diode is connected with the second end of described electric main; Optocoupler, the first end of described optocoupler is connected with the other end of described 4th resistance, and the second end of described optocoupler is connected with the anode of described first diode, the 3rd end ground connection of described optocoupler; 5th resistance, one end of described 5th resistance is connected with described default power supply, and the other end of described 5th resistance is connected with the 4th end of described optocoupler; 6th resistance, one end of described 6th resistance is connected with the 4th end of described optocoupler with the other end of described 5th resistance respectively, and the described other end of the 6th resistance is connected with the zero passage detection pin of described control chip; 3rd electric capacity, one end of described 3rd electric capacity is connected with the other end of described 6th resistance, ground connection after the other end of described 3rd electric capacity is connected with the 3rd end of described optocoupler.
For achieving the above object, the power interruption recovering controlling method of a kind of electric cooking pot that the present invention's another aspect embodiment proposes, comprises the following steps: detect the zero cross signal being input to the electric main of electric cooking pot; The whether power-off of described electric cooking pot is judged according to described zero cross signal; If judge described electric cooking pot power-off, then preserve the duty of described electric cooking pot when power-off, and detected the power-off time of described electric cooking pot by the power-off delay circuit in described electric cooking pot when described electric cooking pot re-powers; And judge whether to control duty when described electric cooking pot returns to power-off according to the power-off time of described electric cooking pot.
According to one embodiment of present invention, when the power-off time of described electric cooking pot is less than Preset Time, control duty when described electric cooking pot returns to power-off; When the power-off time of described electric cooking pot is more than or equal to described Preset Time, controls described electric cooking pot and reset to original state.
Further, described Preset Time is arranged according to described power-off delay circuit.
According to the power interruption recovering controlling method of the electric cooking pot of the embodiment of the present invention, first the zero cross signal that is input to the electric main of electric cooking pot is detected to judge the whether power-off of electric cooking pot, if judge electric cooking pot power-off, then preserve duty during electric cooking pot power-off, and detected the power-off time of electric cooking pot by power-off delay circuit when electric cooking pot re-powers, then judge whether to control duty when electric cooking pot returns to power-off according to the power-off time of electric cooking pot, duty when electric cooking pot returns to power-off is such as controlled when power-off time is shorter, control electric cooking pot when power-off time is longer and reset to original state, thus electric cooking pot short supply interruption needs user to reset the mode of operation etc. of electric cooking pot after can be avoided to power on again, it also avoid duty when still to return to original power-off after the long-time power-off of electric cooking pot powers on again and the clock disorder that causes waits puzzlement, electric cooking pot is made fully to meet the needs of user, bring conveniently to user, improve Consumer's Experience.
In addition, embodiments of the invention also proposed a kind of electric cooking pot, and it comprises the power interruption recovering device of above-mentioned electric cooking pot.
The electric cooking pot of the embodiment of the present invention, by judging that the length of power-off time judges that duty when returning to power-off still resets to original state when can re-power after a loss of power, duty during power-off is such as returned to when power-off time is shorter, original state is reset to when power-off time is longer, thus short supply interruption needs user to reset mode of operation etc. after can be avoided to power on again, it also avoid duty when still to return to original power-off after long-time power-off powers on again and the clock disorder that causes waits puzzlement, fully meet the needs of user, bring conveniently to user, improve Consumer's Experience.
The aspect that the present invention adds and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
The present invention above-mentioned and/or additional aspect and advantage will become obvious and easy understand from the following description of the accompanying drawings of embodiments, wherein:
Fig. 1 is the circuit diagram of the power interruption recovering device of electric cooking pot according to the embodiment of the present invention;
Fig. 2 is the process flow diagram of the power interruption recovering controlling method of electric cooking pot according to the embodiment of the present invention;
Fig. 3 is the control flow chart of micro-wave oven when power-off according to an embodiment of the invention; And
Fig. 4 is the control flow chart of micro-wave oven when re-powering according to an embodiment of the invention.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
Disclosing hereafter provides many different embodiments or example is used for realizing different structure of the present invention.Of the present invention open in order to simplify, hereinafter the parts of specific examples and setting are described.Certainly, they are only example, and object does not lie in restriction the present invention.In addition, the present invention can in different example repeat reference numerals and/or letter.This repetition is to simplify and clearly object, itself does not indicate the relation between discussed various embodiment and/or setting.In addition, the various specific technique that the invention provides and the example of material, but those of ordinary skill in the art can recognize the property of can be applicable to of other techniques and/or the use of other materials.In addition, fisrt feature described below second feature it " on " structure can comprise the embodiment that the first and second features are formed as directly contact, also can comprise other feature and be formed in embodiment between the first and second features, such first and second features may not be direct contacts.
In describing the invention, it should be noted that, unless otherwise prescribed and limit, term " installation ", " being connected ", " connection " should be interpreted broadly, such as, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be directly be connected, also indirectly can be connected by intermediary, for the ordinary skill in the art, the concrete meaning of above-mentioned term can be understood as the case may be.
Describe the power interruption recovering device of the electric cooking pot proposed according to the embodiment of the present invention with reference to the accompanying drawings, there is the electric cooking pot of this power interruption recovering device and the power interruption recovering controlling method of electric cooking pot.
Fig. 1 is the circuit diagram of the power interruption recovering device of electric cooking pot according to the embodiment of the present invention.As shown in Figure 1, the power interruption recovering device of this electric cooking pot comprises: zero cross detection circuit 10, power-off delay circuit 20 and control circuit 30.
Wherein, zero cross detection circuit 10 detects the zero cross signal being input to the electric main of electric cooking pot, power-off delay circuit 20 detects the power-off time of described electric cooking pot, control circuit 30 is connected with power-off delay circuit 20 respectively with zero cross detection circuit 10, control circuit 30 judges the whether power-off of described electric cooking pot according to described zero cross signal, if judge electric cooking pot power-off, duty when then preserving electric cooking pot power-off, and judge whether to control duty when described electric cooking pot returns to power-off according to the power-off time of described electric cooking pot when re-powering after described electric cooking pot power-off.
According to one embodiment of present invention, when the power-off time of described electric cooking pot is less than Preset Time, control circuit 30 controls duty when described electric cooking pot returns to power-off; When the power-off time of described electric cooking pot is more than or equal to described Preset Time, control circuit 30 controls described electric cooking pot and resets to original state, such as, remove mode of operation, clock etc. that electric cooking pot is arranged.
Wherein, described Preset Time is arranged according to power-off delay circuit 20.That is, namely Preset Time is the delay time of power-off delay circuit 20, such as, can be 10 seconds.
Therefore say, in an embodiment of the present invention, the zero cross signal of the electric main that control circuit 30 detects according to zero cross detection circuit 10 judges the whether power-off of electric cooking pot, if judge electric cooking pot power-off, control chip then in control circuit 30 triggers zero passage and interrupts, and duty when preserving electric cooking pot power-off such as preserves clock, the parameters of user and state variable, display interface etc.Control circuit 30 is when electric cooking pot re-powers, by detecting power-off delay circuit 20, can obtain the power-off time of electric cooking pot, if power-off time is less than Preset Time such as 10 seconds, control circuit 30 controls duty when described electric cooking pot returns to power-off; If power-off time is more than or equal to Preset Time such as 10 seconds, control circuit controls described electric cooking pot and resets to original state.
Particularly, according to one embodiment of present invention, as shown in Figure 1, power-off delay circuit 20 comprises: the first metal-oxide-semiconductor M1, the second metal-oxide-semiconductor M2, the first triode Q1, the first resistance R1, the first electrochemical capacitor EC1 and the second resistance R2.
Wherein, the drain electrode of the first metal-oxide-semiconductor M1 is connected with the power supply of default power supply such as 5V, and the grid of the first metal-oxide-semiconductor M1 is connected with control circuit 30, and the drain electrode of the second metal-oxide-semiconductor M2 is connected with the source electrode of the first metal-oxide-semiconductor M1, and the grid of the second metal-oxide-semiconductor M2 is connected with control circuit 30; The base stage of the first triode Q1 is connected with the source electrode of the second metal-oxide-semiconductor M2, the grounded emitter of the first triode Q1, and the collector of the first triode Q1 is connected with control circuit 30; One end of first resistance R1 is connected with the power supply of default power supply such as 5V, and the other end of the first resistance R1 is connected with control circuit 30 with the collector of the first triode Q1 respectively; The positive terminal of the first electrochemical capacitor EC1 is connected with the drain electrode of the second metal-oxide-semiconductor M2 with the source electrode of the first metal-oxide-semiconductor M1 respectively, and the negative pole end ground connection of the first electrochemical capacitor EC1, the second resistance R2 is in parallel with the first electrochemical capacitor EC1.It can thus be appreciated that the power-off delay circuit of the embodiment of the present invention only adopts several simple discrete component, without the need to increasing very large cost, and circuit is simple and reliable, also accurately can control Preset Time.
Further, as shown in Figure 1, control circuit 30 comprises: control chip 301, first electric capacity C1, the second electric capacity C2, crystal oscillator OSC1 and the 3rd resistance R3.First time delay pin Delay_1 of control chip 301 is connected with the grid of the first metal-oxide-semiconductor M1, second time delay pin Delay_2 of control chip 301 is connected with the grid of the second metal-oxide-semiconductor M2, and the 3rd time delay pin Delay_3 of control chip 301 is connected with the collector of the first triode Q1; One end ground connection of the first electric capacity C1, the other end of the first electric capacity C1 is connected with the first pin Xout of control chip 301, one end ground connection of the second electric capacity C2, and the other end of the second electric capacity C2 is connected with the second pin Xin of control chip 301; Crystal oscillator OSC1 is connected between the other end of the first electric capacity C1 and the other end of the second electric capacity C2, and the 3rd resistance R3 is in parallel with crystal oscillator OSC1.
That is, be made up of the basic Single Chip Microcomputer (SCM) system of electric cooking pot electric capacity C1, C2 and crystal oscillator OSC1, resistance R3 and control chip 301, the underlying hardware that the control program as electric cooking pot runs.Power-off delay circuit is made up of metal-oxide-semiconductor M1, M2 and triode Q1, resistance R1, resistance R2, electrochemical capacitor EC1, when electric cooking pot re-powers, the power-off time of electric cooking pot can be obtained by the signal of the 3rd time delay pin Delay_3 of detection control chip 301.
Wherein, by the capacitance of the resistance and electrochemical capacitor EC1 that arrange resistance R2 to arrange the delay time such as 10 seconds of Preset Time and power-off delay circuit 30.The computing formula of delay time is: t=R2*EC1*Ln (5/0.7).Such as, if the signal the 3rd time delay pin Delay_3 being detected is low level, then judge that power-off time is less than delay time such as 10 seconds.
According to one embodiment of present invention, as shown in Figure 1, zero cross detection circuit 10 comprises: the 4th resistance R4, the first diode D1, optocoupler IC1, the 5th resistance R5, the 6th resistance R6 and the 3rd electric capacity C3.Wherein, one end of the 4th resistance R4 is connected with the first end of electric main AC such as live wire L, and the negative electrode of the first diode D1 is connected with the second end such as zero line N of described electric main AC; The first end 1 of optocoupler IC1 is connected with the other end of the 4th resistance R4, second end 2 of optocoupler IC1 is connected with the anode of the first diode D1,3rd end 3 ground connection of optocoupler IC1, one end of 5th resistance R5 is connected with the power supply of described default power supply such as 5V, and the other end of the 5th resistance R5 is connected with the 4th end 4 of optocoupler IC1; One end of 6th resistance R6 is connected with the 4th end 4 of optocoupler IC1 with the other end of the 5th resistance R5 respectively, the other end of the 6th resistance R6 is connected with the zero passage detection pin ZERO of control chip, one end of 3rd electric capacity C3 is connected with the other end of the 6th resistance R6, ground connection after the other end of the 3rd electric capacity C3 is connected with the 3rd end 3 of optocoupler IC1.This zero cross detection circuit 10 is used for detecting electric cooking pot and whether connects electric main AC, when connecting electric main, control chip 301 is square wave by the zero cross signal that zero passage detection pin ZERO detects, if during electric cooking pot power-off, control chip 301 is high level by the zero cross signal that zero passage detection pin ZERO detects.
In an embodiment of the present invention, electric cooking pot can be micro-wave oven.When micro-wave oven works in normal power-up, " Delay1 " signal that control chip 301 is exported by the first time delay pin Delay_1 is high level, control the first metal-oxide-semiconductor M1 conducting, and be low level by second time delay pin Delay_2 output " Delay2 " signal, control the second metal-oxide-semiconductor M2 to turn off, the default power supply of 5V continues to charge to electrochemical capacitor EC1, and the voltage keeping electrochemical capacitor EC1 is 5V.
When after the unexpected power-off of micro-wave oven, zero cross signal becomes high level and the interruption of trigger control chip 301 zero passage from square-wave signal, and control chip 301 preserves duty during micro-wave oven power-off before+5V voltage drops to resetting voltage; And turn off metal-oxide-semiconductor M1, M2 first immediately during micro-wave oven power-off, electrochemical capacitor EC1 discharges by means of only resistance R2, the tension discharge of electrochemical capacitor EC1 to the time t=R2*EC1*Ln (5/0.7) of 0.7V, Here it is delay time and Preset Time.Be understandable that, in an embodiment of the present invention, delay time can be adjusted by the parameter adjusting R2, EC1.
When micro-wave oven re-powers, and after the I/O mouth initialization of control chip, " Delay1 " signal that control chip 301 is exported by the first time delay pin Delay_1 is low level, controls the first metal-oxide-semiconductor M1 and turns off, and prevents the abnormal charging of electrochemical capacitor EC1; Then, " Delay2 " signal that control chip 301 is exported by the second time delay pin Delay_2 is high level, controls the second metal-oxide-semiconductor M2 conducting.Wherein, control chip 301 detects " Delay3 " signal of the 3rd time delay pin Delay_3 within 10 milliseconds of times, if now power-off time is less than delay time, namely the voltage of electrochemical capacitor EC1 is also greater than 0.7V, then triode Q1 is still in saturation conduction state, " Delay3 " signal is low level, and control chip detects that namely low level judges that power-off time is less than 10 seconds, can't detect, and judges that power-off time is more than or equal to 10 seconds.
Judge the power-off time of micro-wave oven at control chip 301 after, control chip 301 controls micro-wave oven according to power-off time and automatically restores to corresponding state.If power-off time is less than 10 seconds, then control chip 301 controls duty when micro-wave oven recovers power-off, otherwise, just control micro-wave oven and reset to original state.
In sum, the power interruption recovering device of the electric cooking pot of the embodiment of the present invention, by detecting the length of power-off time, judges the duty whether electric cooking pot power-off returns to power-off when re-powering time.If very of short duration such as 1 second ~ 1 minute of power-off time, then control duty when electric cooking pot returns to power-off; If power-off time is long, then controls electric cooking pot and reset to original state.Therefore, for occurring that electric main trips, user changes the of short duration powering-off states such as supply socket, and user is then without the need to again arranging electric cooking pot such as micro-wave oven, and bring conveniently to user, Consumer's Experience is better simultaneously.Further, power-off delay circuit only uses 6 simple discrete components, and circuit is simple, and utilize metal-oxide-semiconductor control capacitance discharge and recharge path, within delay time can be accurate to 1 second, within namely the decision threshold of power-off time can be as accurate as 1 second, control accuracy is high.
According to the power interruption recovering device of the electric cooking pot of the embodiment of the present invention, detect by zero cross detection circuit the zero cross signal being input to the electric main of electric cooking pot and judge the whether power-off of electric cooking pot, if judge electric cooking pot power-off, then preserve duty during electric cooking pot power-off, and the power-off time of electric cooking pot when re-powering after electric cooking pot power-off, is detected by power-off delay circuit, then control circuit judges whether to control when electric cooking pot returns to power-off according to the power-off time of electric cooking pot duty, such as when power-off time is shorter, control circuit controls duty when electric cooking pot returns to power-off, control control circui electricity cooking pot when power-off time is longer and reset to original state, user is needed to reset the mode of operation etc. of electric cooking pot after avoiding electric cooking pot short supply interruption to power on again, it also avoid duty when still to return to original power-off after the long-time power-off of electric cooking pot powers on again and the clock disorder that causes waits puzzlement, fully meet the needs of user, bring conveniently to user, improve Consumer's Experience.
Fig. 2 is the process flow diagram of the power interruption recovering controlling method of electric cooking pot according to the embodiment of the present invention.As shown in Figure 2, the power interruption recovering controlling method of this electric cooking pot comprises the following steps:
S1, detects the zero cross signal being input to the electric main of electric cooking pot.
S2, judges the whether power-off of electric cooking pot according to zero cross signal.
S3, if judge electric cooking pot power-off, then closes the metal-oxide-semiconductor M1 in power-off delay circuit immediately, M2, and duty when preserving electric cooking pot power-off, and when electric cooking pot re-powers, detected the power-off time of electric cooking pot by the power-off delay circuit in electric cooking pot.
S4, judges whether to control duty when electric cooking pot returns to power-off according to the power-off time of electric cooking pot.
Wherein, when the power-off time of described electric cooking pot is less than Preset Time, control duty when described electric cooking pot returns to power-off; When the power-off time of described electric cooking pot is more than or equal to described Preset Time, controls described electric cooking pot and reset to original state, such as, remove mode of operation, clock etc. that electric cooking pot is arranged.
Further, described Preset Time is arranged according to described power-off delay circuit.That is, namely Preset Time is the delay time of power-off delay circuit, such as, can be 10 seconds.
In an embodiment of the present invention, above-mentioned electric cooking pot can be micro-wave oven.
Particularly, according to one embodiment of present invention, as shown in Figure 3, the control flow of micro-wave oven when power-off comprises:
S301, triggers zero passage and interrupts.That is, when the unexpected power-off of micro-wave oven, detect that zero cross signal becomes high level, trigger zero passage and interrupt, enter zero passage interruption subroutine.
S302, first close metal-oxide-semiconductor M1, M2, then preserves clock.
S303, preserves the parameter of user's setting and the state variable of micro-wave oven.
S304, preserves the display interface of micro-wave oven.
S305, returns master routine.
After entering zero passage interruption subroutine, need first to close metal-oxide-semiconductor M1, M2, then carry out the preservation of clock, parameters and state variable, display interface, namely preserve duty during micro-wave oven power-off, then return the master routine of micro-wave oven.It should be noted that, in an embodiment of the present invention, when the unexpected power-off of micro-wave oven, preserve current operating state is not limited to clock, user is arranged the parameter, display interface etc. of micro-wave oven.
According to one embodiment of present invention, as shown in Figure 4, control flow when micro-wave oven re-powers comprises:
S401, initialization, namely carries out initialization when micro-wave oven re-powers to the I/O mouth of control chip.
S402, Delay1=0, " Delay1 " signal that namely control chip is exported by the first time delay pin Delay_1 is low level, controls the first metal-oxide-semiconductor M1 and turns off, and prevents the abnormal charging of electrochemical capacitor EC1.
S403, Delay2=1, " Delay2 " signal that namely control chip is exported by the second time delay pin Delay_2 is high level, controls the second metal-oxide-semiconductor M2 conducting.
S404, time delay 10ms start to detect Delay3 signal.
S405, reads Delay3 signal.
S406, judges whether time delay 10ms terminates.If so, step S409 is performed; If not, step S407 is performed.
S407, judges whether Delay3 signal is low level.If so, step S408 is performed; If not, step S405 is returned.
S408, recovers off-position and display interface, namely controls duty when micro-wave oven returns to power-off, performs step S410.
S409, controls micro-wave oven and resets to original state, perform step S410.
S410, Delay1=1, Delay2=0, namely " Delay1 " signal that control chip is exported by the first time delay pin Delay_1 is high level, control the first metal-oxide-semiconductor M1 conducting, and be low level by second time delay pin Delay_2 output " Delay2 " signal, control the second metal-oxide-semiconductor M2 and turn off, the default power supply of 5V continues to charge to electrochemical capacitor EC1, and the voltage keeping electrochemical capacitor EC1 is 5V.
S411, returns.
In the present embodiment, after micro-wave oven power-up initializing, " Delay1 " signal that control chip is exported by the first time delay pin Delay_1 is low level, control the first metal-oxide-semiconductor M1 to turn off, prevent the abnormal charging of electrochemical capacitor EC1, " Delay2 " signal that control chip is exported by the second time delay pin Delay_2 is simultaneously high level, controls the second metal-oxide-semiconductor M2 conducting.When detecting " Delay " signal, in in 10ms, whether duplicate detection and judgement " Delay " signal are low level, if detect that " Delay " signal is low level, then control duty when micro-wave oven returns to power-off, and no longer detect " Delay " signal; If 10ms can't detect low level in the time, then control micro-wave oven and reset to original state.Finally, " Delay1 " signal that control chip is exported by the first time delay pin Delay_1 is high level, control the first metal-oxide-semiconductor M1 conducting, and be low level by second time delay pin Delay_2 output " Delay2 " signal, control the second metal-oxide-semiconductor M2 to turn off, power-off delay circuit starts charging, for next power cut off delay is prepared.
In sum, the power interruption recovering controlling method of the electric cooking pot of the embodiment of the present invention, by detecting the length of power-off time, judges the duty whether electric cooking pot power-off returns to power-off when re-powering time.If very of short duration such as 1 second ~ 1 minute of power-off time, then control duty when electric cooking pot returns to power-off; If power-off time is long, then controls electric cooking pot and reset to original state.Therefore, for occurring that electric main trips, user changes the of short duration powering-off states such as supply socket, and user is then without the need to again arranging electric cooking pot such as micro-wave oven, and bring conveniently to user, Consumer's Experience is better simultaneously.
According to the power interruption recovering controlling method of the electric cooking pot of the embodiment of the present invention, first the zero cross signal that is input to the electric main of electric cooking pot is detected to judge the whether power-off of electric cooking pot, if judge electric cooking pot power-off, then preserve duty during electric cooking pot power-off, and detected the power-off time of electric cooking pot by power-off delay circuit when electric cooking pot re-powers, then judge whether to control duty when electric cooking pot returns to power-off according to the power-off time of electric cooking pot, duty when electric cooking pot returns to power-off is such as controlled when power-off time is shorter, control electric cooking pot when power-off time is longer and reset to original state, thus electric cooking pot short supply interruption needs user to reset the mode of operation etc. of electric cooking pot after can be avoided to power on again, it also avoid duty when still to return to original power-off after the long-time power-off of electric cooking pot powers on again and the clock disorder that causes waits puzzlement, electric cooking pot is made fully to meet the needs of user, bring conveniently to user, improve Consumer's Experience.
In addition, embodiments of the invention also proposed a kind of electric cooking pot, and it comprises the power interruption recovering device of above-mentioned electric cooking pot.
The electric cooking pot of the embodiment of the present invention, by judging that the length of power-off time judges that duty when returning to power-off still resets to original state when can re-power after a loss of power, duty during power-off is such as returned to when power-off time is shorter, original state is reset to when power-off time is longer, thus short supply interruption needs user to reset mode of operation etc. after can be avoided to power on again, it also avoid duty when still to return to original power-off after long-time power-off powers on again and the clock disorder that causes waits puzzlement, fully meet the needs of user, bring conveniently to user, improve Consumer's Experience.
Describe and can be understood in process flow diagram or in this any process otherwise described or method, represent and comprise one or more for realizing the module of the code of the executable instruction of the step of specific logical function or process, fragment or part, and the scope of the preferred embodiment of the present invention comprises other realization, wherein can not according to order that is shown or that discuss, comprise according to involved function by the mode while of basic or by contrary order, carry out n-back test, this should understand by embodiments of the invention person of ordinary skill in the field.
In flow charts represent or in this logic otherwise described and/or step, such as, the sequencing list of the executable instruction for realizing logic function can be considered to, may be embodied in any computer-readable medium, for instruction execution system, device or equipment (as computer based system, comprise the system of processor or other can from instruction execution system, device or equipment instruction fetch and perform the system of instruction) use, or to use in conjunction with these instruction execution systems, device or equipment.With regard to this instructions, " computer-readable medium " can be anyly can to comprise, store, communicate, propagate or transmission procedure for instruction execution system, device or equipment or the device that uses in conjunction with these instruction execution systems, device or equipment.The example more specifically (non-exhaustive list) of computer-readable medium comprises following: the electrical connection section (electronic installation) with one or more wiring, portable computer diskette box (magnetic device), random access memory (RAM), ROM (read-only memory) (ROM), erasablely edit ROM (read-only memory) (EPROM or flash memory), fiber device, and portable optic disk ROM (read-only memory) (CDROM).In addition, computer-readable medium can be even paper or other suitable media that can print described program thereon, because can such as by carrying out optical scanning to paper or other media, then carry out editing, decipher or carry out process with other suitable methods if desired and electronically obtain described program, be then stored in computer memory.
Should be appreciated that each several part of the present invention can realize with hardware, software, firmware or their combination.In the above-described embodiment, multiple step or method can with to store in memory and the software performed by suitable instruction execution system or firmware realize.Such as, if realized with hardware, the same in another embodiment, can realize by any one in following technology well known in the art or their combination: the discrete logic with the logic gates for realizing logic function to data-signal, there is the special IC of suitable combinational logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA) etc.
Those skilled in the art are appreciated that realizing all or part of step that above-described embodiment method carries is that the hardware that can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, this program perform time, step comprising embodiment of the method one or a combination set of.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing module, also can be that the independent physics of unit exists, also can be integrated in a module by two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, and the form of software function module also can be adopted to realize.If described integrated module using the form of software function module realize and as independently production marketing or use time, also can be stored in a computer read/write memory medium.
The above-mentioned storage medium mentioned can be ROM (read-only memory), disk or CD etc.
In the description of this instructions, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments without departing from the principles and spirit of the present invention, scope of the present invention is by claims and equivalency thereof.
Claims (10)
1. a power interruption recovering device for electric cooking pot, is characterized in that, comprising:
Zero cross detection circuit, described zero cross detection circuit detects the zero cross signal being input to the electric main of electric cooking pot;
Detect the power-off delay circuit of the power-off time of described electric cooking pot; And
Control circuit, described control circuit is connected with described power-off delay circuit respectively with described zero cross detection circuit, described control circuit judges the whether power-off of described electric cooking pot according to described zero cross signal, and judges whether to control duty when described electric cooking pot returns to power-off according to the power-off time of described electric cooking pot when re-powering after described electric cooking pot power-off.
2. the power interruption recovering device of electric cooking pot as claimed in claim 1, is characterized in that,
When the power-off time of described electric cooking pot is less than Preset Time, the described electric cooking pot of described control circuit control returns to duty during power-off;
When the power-off time of described electric cooking pot is more than or equal to described Preset Time, described control circuit controls described electric cooking pot and resets to original state.
3. the power interruption recovering device of electric cooking pot as claimed in claim 2, is characterized in that, described Preset Time is arranged according to described power-off delay circuit.
4. the power interruption recovering device of electric cooking pot as claimed in claim 1, is characterized in that, described power-off delay circuit comprises:
First metal-oxide-semiconductor, the drain electrode of described first metal-oxide-semiconductor is connected with default power supply, and the grid of described first metal-oxide-semiconductor is connected with described control circuit;
Second metal-oxide-semiconductor, the drain electrode of described second metal-oxide-semiconductor is connected with the source electrode of described first metal-oxide-semiconductor, and the grid of described second metal-oxide-semiconductor is connected with described control circuit;
First triode, the base stage of described first triode is connected with the source electrode of described second metal-oxide-semiconductor, the grounded emitter of described first triode, and the collector of described first triode is connected with described control circuit;
First resistance, one end of described first resistance is connected with described default power supply, and the other end of described first resistance is connected with described control circuit with the collector of described first triode respectively;
First electrochemical capacitor, the positive terminal of described first electrochemical capacitor is connected with the drain electrode of described second metal-oxide-semiconductor with the source electrode of described first metal-oxide-semiconductor respectively, the negative pole end ground connection of described first electrochemical capacitor;
Second resistance, described second resistance is in parallel with described first electrochemical capacitor.
5. the power interruption recovering device of electric cooking pot as claimed in claim 4, is characterized in that, described control circuit comprises:
Control chip, first time delay pin of described control chip is connected with the grid of described first metal-oxide-semiconductor, second time delay pin of described control chip is connected with the grid of described second metal-oxide-semiconductor, and the 3rd time delay pin of described control chip is connected with the collector of described first triode;
First electric capacity, one end ground connection of described first electric capacity, the other end of described first electric capacity is connected with the first pin of described control chip;
Second electric capacity, one end ground connection of described second electric capacity, the other end of described second electric capacity is connected with the second pin of described control chip;
Crystal oscillator, described crystal oscillator is connected between the other end of described first electric capacity and the other end of described second electric capacity;
3rd resistance, described 3rd resistance is in parallel with described crystal oscillator.
6. the power interruption recovering device of electric cooking pot as claimed in claim 5, is characterized in that, described zero cross detection circuit comprises:
4th resistance, one end of described 4th resistance is connected with the first end of described electric main;
First diode, the negative electrode of described first diode is connected with the second end of described electric main;
Optocoupler, the first end of described optocoupler is connected with the other end of described 4th resistance, and the second end of described optocoupler is connected with the anode of described first diode, the 3rd end ground connection of described optocoupler;
5th resistance, one end of described 5th resistance is connected with described default power supply, and the other end of described 5th resistance is connected with the 4th end of described optocoupler;
6th resistance, one end of described 6th resistance is connected with the 4th end of described optocoupler with the other end of described 5th resistance respectively, and the described other end of the 6th resistance is connected with the zero passage detection pin of described control chip;
3rd electric capacity, one end of described 3rd electric capacity is connected with the other end of described 6th resistance, ground connection after the other end of described 3rd electric capacity is connected with the 3rd end of described optocoupler.
7. an electric cooking pot, is characterized in that, comprises the power interruption recovering device of the electric cooking pot according to any one of claim 1-6.
8. a power interruption recovering controlling method for electric cooking pot, is characterized in that, comprises the following steps:
Detect the zero cross signal being input to the electric main of electric cooking pot;
The whether power-off of described electric cooking pot is judged according to described zero cross signal;
If judge described electric cooking pot power-off, then preserve the duty of described electric cooking pot when power-off, and detected the power-off time of described electric cooking pot by the power-off delay circuit in described electric cooking pot when described electric cooking pot re-powers; And
Judge whether to control duty when described electric cooking pot returns to power-off according to the power-off time of described electric cooking pot.
9. the power interruption recovering controlling method of electric cooking pot as claimed in claim 8, is characterized in that,
When the power-off time of described electric cooking pot is less than Preset Time, control duty when described electric cooking pot returns to power-off;
When the power-off time of described electric cooking pot is more than or equal to described Preset Time, controls described electric cooking pot and reset to original state.
10. the power interruption recovering controlling method of electric cooking pot as claimed in claim 9, is characterized in that, described Preset Time is arranged according to described power-off delay circuit.
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