CN110384399A - The control method of cooking apparatus and cooking apparatus - Google Patents
The control method of cooking apparatus and cooking apparatus Download PDFInfo
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- CN110384399A CN110384399A CN201910197821.1A CN201910197821A CN110384399A CN 110384399 A CN110384399 A CN 110384399A CN 201910197821 A CN201910197821 A CN 201910197821A CN 110384399 A CN110384399 A CN 110384399A
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- circuit
- overflow
- controller
- cooking apparatus
- preset duration
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/56—Preventing boiling over, e.g. of milk
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
Abstract
The invention discloses the control methods of a kind of cooking apparatus and cooking apparatus.Cooking apparatus includes anti-overflow probe, the second anti-overflow end, detection circuit and controller；Anti-overflow probe has the first anti-overflow end；Detection circuit includes the first circuit, second circuit and signal output end, the first end of first circuit and the first anti-overflow end electrical connection, the first end of second circuit and the second anti-overflow end electrical connection, signal output end and the electrical connection of the first circuit, insulate between the first circuit and second circuit；The second end electrical connection of the first control signal pin and the first circuit of controller, the second end electrical connection of the second control signal pin and second circuit of controller, the signal acquisition pin and signal output end of controller are electrically connected, controller can be alternately to the first circuit input high level and low level, and accordingly replaces to second circuit input low level and high level.Thereby, it is possible to effectively reduce the electrochemical corrosion of anode, the sensitivity of anti-overflow probe is improved.
Description
Technical field
The present invention relates to cooking apparatus technical fields.
Background technique
Cooking apparatus is provided with anti-overflow probe on the market at present.Anti-overflow probe has resistance-type and two kinds of condenser type.Resistance-type
Anti-overflow probe be metal probe.It is provided in the cooking apparatus of the anti-overflow probe of resistance-type, the anti-overflow probe of resistance-type is anti-
Always as anode in excessive measure loop.The ground connection that anti-overflow measure loop is formed with the anti-overflow probe is additionally provided on cooking apparatus
End.Ground terminal is used as always cathode in anti-overflow measure loop.Liquid when the liquid boiling in cooking space, in cooking space
Body rises, liquid and the contact of resistance-type anti-overflow probe, anti-overflow measure loop conducting, and anti-overflow measure loop issues spill over.In
In the state that anti-overflow measure loop does not turn on, the steam of the rising in cooking space makes at the anti-overflow probe and ground terminal of resistance-type
In lightly conducting state, steam and the anti-overflow probe of resistance-type form electrochemical corrosion, the anti-overflow probe of steam and resistance-type at this time
Oxidation reaction occurs, causes the metal material of the anti-overflow probe of resistance-type to be gradually dissolved, may lead after long-term use in this way
Cause detection failure.
Accordingly, it is desirable to provide the control method of a kind of cooking apparatus and cooking apparatus, is mentioned above at least being partially solved
To the problem of.
Summary of the invention
A series of concept of reduced forms is introduced in Summary, this will in the detailed description section into
One step is described in detail.Summary of the invention is not meant to attempt to limit technical solution claimed
Key feature and essential features do not mean that the protection scope for attempting to determine technical solution claimed more.
In order at least be partially solved the above problem, the invention discloses a kind of cooking apparatus, cooking apparatus includes: anti-overflow
The upper end of the cooking space of cooking apparatus is arranged in probe, anti-overflow probe, and anti-overflow probe has the first anti-overflow end；Second is anti-overflow
End；Detection circuit, detection circuit include the first circuit, second circuit and signal output end, the first end of the first circuit and first
Anti-overflow end electrical connection, the first end of second circuit and the second anti-overflow end electrical connection, signal output end and the electrical connection of the first circuit, the
It insulate between one circuit and second circuit；Controller, the first control signal pin of controller and the second end electricity of the first circuit
The second end electrical connection of connection, the second control signal pin of controller and second circuit, the signal acquisition pin of controller and
Signal output end electrical connection, controller can be alternately to the first circuit input high level and low level, and accordingly replaces
To second circuit input low level and high level.
Cooking apparatus according to the present invention, in the course of work of cooking apparatus, controller alternately to the first circuit and
Second circuit conveys high level and low level, thus avoids some in the first anti-overflow end and the second anti-overflow end of anti-overflow probe
It is constantly in positive state, and then can effectively reduce the electrochemical corrosion of positive electrode, improves the sensitivity of anti-overflow probe.
Optionally, the second anti-overflow end is also disposed on anti-overflow probe.The first anti-overflow end and the second anti-overflow end are respectively provided with as a result,
On anti-overflow probe, detection circuit is simple.
Optionally, detection circuit further includes capacitor, and one end of capacitor is grounded, and the other end and signal output end of capacitor are electrically connected
It connects；Detection circuit further includes first resistor and second resistance, and first resistor is connected on the first circuit, and second resistance is connected on
On two circuits.It is fast that the RC circuit that the resistance in capacitor and detection circuit is constituted as a result, can be avoided the current value in detection circuit
Speed variation, protects detection circuit and controller；And the size of the current value in detection circuit can be reduced, and then reduce anti-overflow
The electrochemical corrosion at the first anti-overflow end and the second anti-overflow end of probe, and then can be improved anti-overflow probe electric conductivity, it improves anti-
The sensitivity of excessive probe.
Optionally, the capacitance C=100nF to 200nF of capacitor.
Optionally, the resistance value R1=50K to 200K of first resistor, the resistance value R2=50K to 200K of second resistance.
Optionally, detection circuit further includes 3rd resistor, and one end of 3rd resistor is electrically connected the first circuit, 3rd resistor
The other end and signal output end electrical connection, the resistance value of 3rd resistor are 50K Ω to 200K Ω.3rd resistor can subtract as a result,
The electric current of circuit where small signal output end protects controller.
Optionally, cooking apparatus further includes socket, and the first end of the first circuit is electrically connected by socket and the first anti-overflow end,
The first end of second circuit passes through socket and the second anti-overflow end electrical connection.Facilitate the installation of anti-overflow probe as a result,.
The present invention also provides a kind of control method of cooking apparatus, cooking apparatus is cooking apparatus above-mentioned, controlling party
Method the following steps are included:
S1. controller inputs the high level of the first preset duration to the first circuit, while pre- to second circuit input first
It is capacitor charging if the low level of duration；
S2. controller acquires the electric signal of the detection circuit of the second preset duration by signal output end；
S3. controller inputs the high level of third preset duration to second circuit, while pre- to the first circuit input third
If the low level of duration, discharge for capacitor.
Control method according to the present invention, control method is for controlling cooking apparatus above-mentioned, in the work of cooking apparatus
In the process, thus controller avoids anti-overflow probe alternately to the first circuit and second circuit conveying high level and low level
Some in first anti-overflow end and the second anti-overflow end is constantly in positive state, and then can effectively reduce the electricity of positive electrode
Chemical attack improves the sensitivity of anti-overflow probe.
Optionally, controller includes: by the electric signal of the detection circuit of signal output end the second preset duration of acquisition
Obtain and store electric signal at interval of the 4th preset duration, controller determine current electric signal and it is adjacent thereto simultaneously
The difference of the electric signal obtained before it determines that the liquid spilling in cooking space is cooked if difference is greater than preset threshold
It prepares food utensil.Thereby, it is possible to preferably judge the liquid condition in cooking space (whether overflowing).
Optionally, the second preset duration is 100ms to 500ms.
Optionally, the first preset duration is 3 to 5 times of t, and third preset duration is 5 to 10 times, t=(R1+R2) * C of t,
Wherein, R1 is the resistance value of first resistor, and R2 is the resistance value of second resistance, and C is the capacitance of capacitor.
Optionally, the 4th preset duration is 300 μ s to 1ms.As a result, in the second preset duration, controller is being taken into account
While computing capability, acquisition sampled data more as far as possible, can guarantee the precision of detection.
Detailed description of the invention
The following drawings of embodiment of the present invention is incorporated herein as part of the present invention for the purpose of understanding the present invention.Show in attached drawing
Embodiments of the present invention and its description, principle used to explain the present invention are gone out.
Fig. 1 is the schematic diagram according to the detection circuit of the cooking apparatus of the preferred embodiment of the present invention；
Fig. 2 is the control system schematic diagram of the cooking apparatus of Fig. 1；
Fig. 3 is the flow diagram of the control method of the cooking apparatus in Fig. 1；
Fig. 4 is the control flow schematic diagram of the controller of cooking apparatus in Fig. 1.
Description of symbols:
100: 110: the first circuit of detection circuit
120: second circuit 130: signal output end
140: capacitor 150: first resistor
160: second resistance 170: 3rd resistor
180: socket 200: anti-overflow probe
300: controller 301: first control signal pin
302: second control signal pin 303: signal acquisition pin
Specific embodiment
In the following description, a large amount of concrete details are given so as to provide a more thorough understanding of the present invention.So
And it will be apparent to one skilled in the art that embodiment of the present invention may not need it is one or more of these thin
It saves and is carried out.In other examples, in order to avoid obscuring with embodiment of the present invention, for well known in the art
Some technical characteristics are not described.
In order to thoroughly understand embodiment of the present invention, detailed structure will be proposed in following description.Obviously, of the invention
The execution of embodiment is not limited to the specific details that those skilled in the art is familiar with.Better embodiment of the invention
It is described in detail as follows, however other than these detailed descriptions, the present invention can also have other embodiments.
Hereinafter, the cooking apparatus to the preferred embodiment of the present invention is illustrated.It is appreciated that according to the present invention cook
Utensil of preparing food can be electric cooker, electric pressure cooking saucepan, electric cooking pot or the other electric heating utensils of electromagnetic heating.And it according to the present invention cooks
Utensil prepare food in addition to having the function of cooking rice, there can also be the various functions such as cook congee.
Cooking apparatus mainly includes cooker body and lid.The substantially rounded rectangular shape of cooker body, and there is cylindrical shape
The interior pot incorporating section of shape, interior pot can freely be put into interior pot incorporating section or take out from interior pot incorporating section, to facilitate internal pot
It is cleaned.The upper surface of interior pot has circular open, for holding material to be heated, rice, soup etc. in inside pot.Lid
The substantially rounded rectangular shape of body, and essentially corresponded to the shape of cooker body.Lid company of pivot in a manner of openable and closable
It is connected to cooker body, closes cooker body for covering.When cover cap closes in cooker body, cooking space is constituted between lid and interior pot.
In present embodiment, as depicted in figs. 1 and 2, cooking apparatus includes anti-overflow probe 200, detection circuit 100 and control
Device 300.Anti-overflow probe 200 is provided on the surface towards cooking space of lid.Anti-overflow probe 200 include the first anti-overflow end and
Second anti-overflow end.First anti-overflow end and the second anti-overflow end are spaced from each other.The anti-overflow end of the first of anti-overflow probe 200 and the second anti-overflow end
It stretches out on lid towards the surface of cooking space.In the present embodiment, the first anti-overflow end and the second anti-overflow end are respectively hereinafter
Anti-overflow circuit positive and negative anodes.As an alternative, anti-overflow probe 200 can also only set an electricity of the anti-overflow end as anti-overflow circuit
Another electricity of electrode as anti-overflow circuit is arranged at other electric elements in cooking apparatus (pot in such as) at this time in pole
Pole, to be electrically connected with detection circuit 100.In this way, during capacitor charging below, controller 300 can be to anti-overflow
Probe 200 is passed through high level so that anti-overflow probe becomes the anode of anti-overflow circuit, while the electricity that controller 300 can inwardly at pot
Pole is passed through low level so that interior pot becomes the cathode of anti-overflow circuit.During capacitor electric discharge, controller 300 can be to anti-overflow
Probe 200 is passed through low level so that anti-overflow probe becomes the cathode of anti-overflow circuit, the electricity that controller 300 can inwardly at pot at this time
Pole is passed through high level so that interior pot becomes the anode of anti-overflow circuit.
In present embodiment, the first anti-overflow end and the second anti-overflow end are arranged on anti-overflow probe 200, detection circuit 100
Simply.
Detection circuit 100 includes the 170, electricity of 3rd resistor of second resistance 160, one of first resistor 150, one
Hold 140 and socket 180.First resistor 150 is serially connected on the first circuit 110.The first end and controller 300 of first resistor 150
First control signal pin 301 be electrically connected, the second end of first resistor 150 pass through socket 180 and anti-overflow probe 200 first
Anti-overflow end electrical connection.Second resistance 160 is serially connected on second circuit 120.The first end of second resistance 160 and controller 300
Second control signal pin 302 is electrically connected, and the second end of second resistance 160 is prevented by the second of socket 180 and anti-overflow probe 200
It overflows and holds electrical connection.First circuit 110 and second circuit 120 form anti-overflow circuit.Controller 300 can pass through the first control in this way
120 inputing power of the first circuit 110 and second circuit of signal pins and second control signal pin to detection circuit 100.The
One circuit 110 and second circuit 120 are a pair of by the first anti-overflow end and the second anti-overflow end one of socket 180 and anti-overflow probe 200
It should be electrically connected.First circuit 110 and second circuit 120 are connect with first and second control signal pins of controller 300 respectively,
Controller 300 can control first and second control signal pins with high level or low level output, it is to be appreciated that controlled
The anti-overflow end that device 300 processed is passed through high level is the anode of anti-overflow circuit, and it is anti-overflow for being passed through low level anti-overflow end by controller 300
The cathode of circuit, so can control the electrode at the first anti-overflow end and the second anti-overflow end by controller 300.
Preferably, the resistance value R1=50K to 200K of first resistor 150.The resistance value R2=50K to 200K of second resistance 160.
In present embodiment, detection circuit 100 further includes signal output end 130.Signal output end 130 and the first circuit
110 electrical connections.The signal acquisition pin 303 and signal output end 130 of controller 300 are electrically connected.Cooking apparatus works as a result,
When, controller 300 can be passed through electric energy to anti-overflow probe 200 by the first circuit 110 and second circuit 120.300 energy of controller
The electric signal in detection circuit 100 is enough obtained by signal output end 130.
When the liquid boiling in the cooking space of cooking apparatus overflows cooking apparatus, liquid in cooking space and anti-
First anti-overflow end of excessive probe 200 and the second anti-overflow end in contact, the first anti-overflow end and second for thus turning on anti-overflow probe 200 are prevented
Overflow end, and then the first circuit 110 of conducting and second circuit 120, that is, anti-overflow circuit is connected, and detection circuit 100 provides electric signal.This
When the electric signal that is received by signal output end 130 of controller 300 change.Therefore controller 300 can connect according to it
The variation for the electric signal being subject to judges whether the liquid in the cooking space of cooking apparatus overflows cooking apparatus, and then takes correlation
Operation is to control the work of the heating module of cooking apparatus, such as stops heating or reduce heating power, and then avoids culinary art empty
Interior liquid overflows cooking apparatus.
The electrical connection of the second end of the first end of 3rd resistor 170 and first resistor 150, the second end of 3rd resistor 170 and
Signal output end 130 is electrically connected.3rd resistor 170 can reduce the electric current of the circuit where signal output end 130 as a result, protect
Protect controller 300.The resistance value of 3rd resistor 170 can be 50K Ω to 200K Ω.Preferably, the resistance value of 3rd resistor 170 can be with
For 82K Ω.
In present embodiment, one end of capacitor 140 is grounded, and the other end of capacitor 140 and the second end of 3rd resistor 170 connect
It connects.As a result, when controller 300 is to the first 110 input high level of circuit, capacitor 140 charges.When the first circuit 110 and second
When circuit 120 is connected, the RC circuit that the resistance in capacitor 140 and detection circuit 100 is constituted be can be avoided in detection circuit 100
Current value quickly changes, and protects detection circuit 100 and controller 300.The capacitance of capacitor 140 can be for C=100nF extremely
200nF.Preferably, the capacitance of capacitor 140 can be C=100nF.
As shown in figure 3, the cooking apparatus of present embodiment can be controlled by following control method: control method includes:
S1. controller inputs the high level of the first preset duration to the first circuit, while pre- to second circuit input first
It is capacitor charging if the low level of duration；
S2. controller acquires the electric signal of the detection circuit of the second preset duration by signal output end；
S3. controller inputs the high level of third preset duration to second circuit, while pre- to the first circuit input third
If the low level of duration, discharge for capacitor.
Specifically, as shown in figure 4, control method may include the control flow configured in controller 300, control flow
The following steps are included:
Step S301: cooking apparatus is started to work, and system starting executes step S302.
Step S302: 300 shutdown signal of controller acquires the sampling functions of pin, at this time the not acquisition testing of controller 300
Electric signal in circuit 100.Controller 300 is to 110 input high level of the first circuit, while controller 300 is to second circuit 120
Input low level, to charge for the capacitor 140 in detection circuit 100.In this way, the resistance in capacitor 140 and detection circuit is constituted
RC circuit is avoided that the current value in detection circuit 100 quickly changes during charging.Execute step S303.
Step S303: controller 300 judges whether the charging duration of capacitor 140 is greater than or equal to the first preset duration, if
It is to execute step S304.If otherwise returning to step S303.As a result, when controller 300 starts sampling, the two of capacitor 140
The voltage stabilization at end, capacitor 140 are able to maintain that the stabilization of the electric signal in detection circuit 100.
Preferably, the first preset duration is 3 to 5 times of t.T=(R1=R2) * C, wherein R1 is the electricity of first resistor 150
Resistance value, R2 are the resistance value of second resistance 160, and C is the capacitance of capacitor 140.
Step S304: 300 open signal of controller acquires the sampling functions of pin, to collect and record detection circuit 100
Electric signal.Controller 300 continues to 110 input high level of the first circuit in the process, while controller 300 is electric to second
120 input low level of road executes step S305.
Step S305: while the sampling functions of 300 open signal of controller acquisition pin, the control meter of controller 300
When device start sample timing, if timer sampling timing duration be greater than the second preset duration, then controller 300 execute step
S310；If otherwise controller 300 executes step S306.Second preset duration can be 100ms to 500ms.It avoids controlling as a result,
The sampling duration of device 300 is too long or too short, in the case where taking into account the computing capability of controller 300, increases sampling as much as possible
Duration with the more sampling electric signals of enough acquisitions, and then can guarantee the precision of detection.Preferably, the second preset duration can be with
For 500ms.
Step S306: controller 300 obtains and records the new electric signal (sampling electric signal) an of detection circuit 100.
Then by the electric signal currently obtained and it is adjacent thereto and before it obtain electric signal compare, determine the difference of two electric signals
Value.Execute step S307.It should be noted that if being that controller executes step S306 for the first time, then not by current electric signal
With it is adjacent thereto and before it obtain electric signal compare, with determine two electric signals difference.
Step S307: controller 300 by difference compared with preset threshold, if difference be less than or equal to preset threshold, then
Illustrate that the first circuit 110 and second circuit 120 are not turned on, executes step S308 at this time.Otherwise illustrate the first circuit 110 and
The conducting of two circuits 120, executes step 309 at this time.
Step 308: controller 300 judge current time and it is preceding it is primary obtain detection circuit 100 electric signal at the time of it
Between duration whether be greater than or equal to the 4th preset duration, if then returning to step S306, if otherwise returning to step
308.4th preset duration, which can according to need, to be configured.In present embodiment, one is obtained at interval of the 4th preset duration
Electric signal is sampled, the entire sampling duration of electric signal covering is thus sampled, can be monitored in the cooking space in entire sampling duration
Liquid condition (whether overflowing), and then can preferably judge the liquid condition (whether overflowing) in cooking space.
Preferably, the 4th preset duration can be 300 μ s to 1ms.As a result, in the second preset duration, control is being taken into account
While the computing capability of device 300, acquisition sampled data more as far as possible, can guarantee the precision of detection.
Step S309: controller 300 determines that the liquid in cooking space overflows cooking apparatus, and controller 300 controls at this time
Cooking apparatus heating module executes relevant operation, overflows cooking apparatus to avoid the liquid in cooking space.
Step S310: 300 shutdown signal of controller acquires the sampling functions of pin, at this time the not acquisition testing of controller 300
Electric signal in circuit 100.In present embodiment, in order to avoid controller 300 is constantly in high level state, and then electricity is reduced
Chemical attack.After the electric signal that controller 300 acquires the detection circuit 100 of the second preset duration, controller 300 is electric to first
110 input low level of road, while controller 300 is to 120 input high level of second circuit.Capacitor in detection circuit 100 at this time
140 electric discharges, execute step S311.
Step S311: controller 300 judges whether the electric discharge duration of capacitor 140 is greater than or equal to third preset duration, if
It is that the electric energy stored in capacitor 140 discharges completely, returns to step S302 at this time.If otherwise returning to step S311.
Preferably, third preset duration is 5 to 10 times of t.
In present embodiment, in the course of work of cooking apparatus, controller 300 is alternately to the first circuit 110 and
Two circuits 120 convey high level and low level, thus avoid certain in the first anti-overflow end and the second anti-overflow end of anti-overflow probe 200
One is constantly in positive state, and then can effectively reduce the electrochemical corrosion of anode, improves the sensitive of anti-overflow probe 200
Property.
Preferably, controller 300 can be single-chip microcontroller, the first control signal pin of controller 300 and the second control letter
Number pin can be the I/O port of single-chip microcontroller.It is controlled in the first circuit 110 and second circuit 120 by the I/O port of single-chip microcontroller in this way
High level and low level switching cost it is low compared with the cost controlled by oscillating circuit.The signal acquisition of controller 300 is drawn
Foot can be the AD sampling pin of single-chip microcontroller.Thus, it is possible to which sampling pin by the AD of single-chip microcontroller carries out AD sampling.
Unless otherwise defined, technical and scientific term used herein and those skilled in the art of the invention
Normally understood meaning is identical.Term used herein is intended merely to describe specifically to implement purpose, it is not intended that limitation is originally
Invention.Terms such as herein presented " components " can both indicate single part, can also indicate the group of multiple parts
It closes.The terms such as herein presented " installation ", " setting " can both indicate that a component was attached directly to another component,
It can also indicate that a component is attached to another component by middleware.The feature described in one embodiment herein
It can be applied in combination another embodiment individually or with other feature, unless this feature is in the another embodiment
In be not suitable for or be otherwise noted.
The present invention is illustrated by above embodiment, but it is to be understood that, above embodiment is
Purpose for illustrating and illustrating, and be not intended to limit the invention within the scope of described embodiment.Art technology
Personnel are it is understood that introduction according to the present invention can also make more kinds of variants and modifications, these variants and modifications
All fall within the scope of the claimed invention.
Claims (12)
1. a kind of cooking apparatus, which is characterized in that the cooking apparatus includes:
Anti-overflow probe (200), the upper end of the cooking space of the cooking apparatus is arranged in the anti-overflow probe (200), described anti-
The probe (200) that overflows has the first anti-overflow end；
Second anti-overflow end；
Detection circuit (100), the detection circuit (100) include that the first circuit (110), second circuit (120) and signal export
It holds (130), the first end of first circuit (110) and the first anti-overflow end electrical connection, the of the second circuit (120)
One end and the second anti-overflow end electrical connection, the signal output end (130) and first circuit (110) electrical connection, it is described
It insulate between first circuit (110) and the second circuit (120)；
The of controller (300), the first control signal pin (301) of the controller (300) and first circuit (110)
The electrical connection of two ends, the second control signal pin (302) of the controller (300) and the second end of the second circuit (120)
Electrical connection, signal acquisition pin (303) and the signal output end (130) electrical connection of the controller (300),
The controller (300) can be alternately to the first circuit (110) input high level and low level, and accordingly
Alternately to the second circuit (120) input low level and high level.
2. cooking apparatus according to claim 1, which is characterized in that the second anti-overflow end is also disposed at the anti-overflow spy
On head (200).
3. cooking apparatus according to claim 1, which is characterized in that the detection circuit (100) further includes capacitor
(140), one end ground connection of the capacitor (140), the other end and the signal output end (130) of the capacitor (140) are electrically connected
It connects；The detection circuit (100) further includes first resistor (150) and second resistance (160), first resistor (150) series connection
On first circuit (110), the second resistance (160) is connected on the second circuit (120).
4. cooking apparatus according to claim 3, which is characterized in that the capacitance C=100nF of the capacitor (140) is extremely
200nF。
5. cooking apparatus according to claim 3, which is characterized in that the resistance value R1=50K of the first resistor (150)
To 200K, the resistance value R2=50K to 200K of the second resistance (160).
6. cooking apparatus according to claim 3, which is characterized in that the detection circuit (100) further includes 3rd resistor
(170), one end of the 3rd resistor (170) is electrically connected first circuit (110), the 3rd resistor (170) it is another
End and the signal output end (130) electrical connection, the resistance value of the 3rd resistor (170) are 50K Ω to 200K Ω.
7. cooking apparatus according to claim 3, which is characterized in that the cooking apparatus further includes socket (180), described
The first end of first circuit passes through the socket (180) and the first anti-overflow end electrical connection, the institute of the second circuit
It states first end and passes through the socket (180) and the second anti-overflow end electrical connection.
8. a kind of control method of cooking apparatus, which is characterized in that the cooking apparatus is any one of claim 3 to 7 institute
The cooking apparatus stated, the control method the following steps are included:
S1. controller (300) first circuit of Xiang Suoshu (110) inputs the high level of the first preset duration, while to described
Second circuit (120) inputs the low level of the first preset duration, is the capacitor charging；
S2. the controller acquires the detection circuit (100) of the second preset duration by the signal output end (130)
Electric signal；
S3. the controller inputs the high level of third preset duration to the second circuit (120), while electric to described first
Road (110) inputs the low level of third preset duration, discharges for the capacitor.
9. control method according to claim 8, which is characterized in that the controller passes through the signal output end
(130) electric signal of the detection circuit (100) of the second preset duration of acquisition includes:
The electric signal is obtained and stored at interval of the 4th preset duration, and the controller (300) determines the current telecommunications
Number and the difference of the electric signal that is adjacent thereto and obtaining before it determine if the difference is greater than preset threshold
Liquid in the cooking space overflows the cooking apparatus.
10. control method according to claim 9, which is characterized in that second preset duration is 100ms to 500ms.
11. control method according to claim 10, which is characterized in that first preset duration is 3 to 5 times of t, institute
State 5 to 10 times that third preset duration is the t, t=(R1+R2) the * C, wherein the R1 is the first resistor
(150) resistance value, the R2 are the resistance value of the second resistance (160), and the C is the capacitance of the capacitor (140).
12. control method according to claim 10, which is characterized in that the 4th preset duration is 300 μ s to 1ms.
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