CN208822376U - Cooking device - Google Patents

Abstract

The utility model provides a cooking device, include: a first electrode (11), a second electrode (12), a resistance detection device (13), a capacitance detection device (14) and an anti-overflow detection device (15); the first electrode (11) and the second electrode (12) are arranged at the top of a cavity of the cooking device at intervals for containing food materials; the resistance detection device (13) is used for detecting the resistance value between the first electrode (11) and the second electrode (12); the capacitance detection device (14) is used for detecting the capacitance value between the first electrode (11) and the second electrode (12); the anti-overflow detection device (15) is used for judging whether an overflow signal is generated according to the resistance value and the capacitance value. The utility model provides a technical scheme can improve the rate of accuracy that the anti-overflow detected.

Description

Cooking device

Technical field

The utility model relates to family's electro-technical field more particularly to a kind of cooking devices.

Background technique

Current cooking device, such as electromagnetic oven generally heat up water, cook congee, the functions such as Baoshang, and when cooking congee or Baoshang, Overflowing pot problem often occurs, while causing food resource to waste, also brings inconvenience to user.

Thus occur some cooking devices with Anti-spill in the market, these cooking devices when realizing Anti-spill, It is that anti-overflow detecting electrode and reference electrode are set on cookware mostly.The anti-overflow testing principle of cooking device are as follows: cooking congee or Baoshang When, if not overflowing, the resistance between anti-overflow detecting electrode and reference electrode is very big；If by overflowing or having overflowed, food boiling The vacuole of generation can touch anti-overflow detecting electrode and reference electrode, and the resistance between anti-overflow detecting electrode and reference electrode is overflowing Become smaller under the connection function of vacuole out, the controller in cooking device becomes according to the resistance between anti-overflow detecting electrode and reference electrode Change to determine whether overflowing.

However, in culinary art, due to the difference of cooking food and cooking method, when spilling anti-overflow detecting electrode and with reference to electricity Resistance change difference between pole is very big, not high so as to cause accuracy rate of the controller when carrying out spilling and judging.

Utility model content

In view of this, the present invention provides a kind of cooking devices, for improving the accuracy rate of anti-overflow detection.

To achieve the goals above, the utility model provides a kind of cooking device, comprising: first electrode, second electrode, resistance Detection device, capacitance detecting device and anti-overflow detection device；

First electrode and second electrode are arranged at intervals at the top of the cavity for containing food materials of cooking device；

Resistor detecting device is electrically connected with first electrode and second electrode respectively, for detecting first electrode and second electrode Between resistance value；

Capacitance detecting device is electrically connected with first electrode and second electrode respectively, for detecting first electrode and second electrode Between capacitance；

Anti-overflow detection device is electrically connected with resistor detecting device and capacitance detecting device respectively, for according to resistance value and electricity Capacitance judges whether to generate spill over.

By being arranged first electrode and second electrode at the top of the cavity for containing food materials of cooking device, and setting with While the resistor detecting device that first electrode is connected with second electrode, the capacitor being connected with first electrode and second electrode is set Detection device, and the anti-overflow detection device being connected with resistor detecting device and capacitance detecting device, it is same by anti-overflow detection device When according to resistance value and capacitance judge whether generate spill over, can effectively improve the accuracy rate of anti-overflow detection.

As a kind of optional embodiment of the utility model embodiment, cooking device further includes micro-control unit MCU, resistance Detection device and capacitance detecting device are integrated in MCU.

By the way that resistor detecting device and capacitance detecting device to be integrated in MCU, the circuit that can reduce cooking device is complicated Degree.

As a kind of optional embodiment of the utility model embodiment, first electrode is defeated with the first input of MCU respectively I/O port and the electrical connection of the second I/O port out, second electrode ground connection；Cooking device further includes first resistor and reference capacitance, the first electricity One end of resistance is connect with the second I/O port, and the other end of first resistor connects with the first input and output I/O port and first electrode respectively It connects, one end of reference capacitance and the touch key-press reference capacitance input port of MCU connect, the other end ground connection of reference capacitance.

By the characteristic of I/O port and touch key-press function and analog conversion function common-use tunnel using MCU, by first Electrode is electrically connected with the first input and output I/O port of MCU and the second I/O port respectively, second electrode ground connection, in the touch of MCU Key reference capacitance input port connects reference capacitance, effectively reduces circuit complexity；By in first electrode and second First resistor is connected between I/O port, can play the role of current-limiting protection to circuit.

As a kind of optional embodiment of the utility model embodiment, MCU is used for when detection resistance value, by the 2nd IO Port is set to analog-to-digital conversion AD input channel, and controls the first input and output I/O port and export high level, according to the second I/O port The voltage signal of acquisition calculates the resistance value between first electrode and second electrode.

As a kind of optional embodiment of the utility model embodiment, MCU is also used to when detecting capacitance, by first Input and output I/O port and the second I/O port are set to touch key-press analog input channel, according to the first input and output I/O port or The voltage signal of second I/O port acquisition calculates the capacitor charge and discharge time, and according to the electricity of capacitor charge and discharge time and reference capacitance Capacitance calculates the capacitance between first electrode and second electrode.

As a kind of optional embodiment of the utility model embodiment, cooking device further includes second resistance, second resistance One end be electrically connected with the first input and output I/O port, the other end of second resistance respectively with the other end of first resistor and first Electrode connection.

As a kind of optional embodiment of the utility model embodiment, anti-overflow detection device is integrated in MCU.

By the way that anti-overflow detection device to be integrated in MCU, the circuit complexity of cooking device can be further decreased.

As a kind of optional embodiment of the utility model embodiment, cooking device includes pot cover, first electrode, the second electricity Pole, resistor detecting device, capacitance detecting device and anti-overflow detection device are located on the pot cover, and first electrode and second electrode are extremely The exposed lower surface in pot cover of small part.

By the way that first electrode, second electrode, resistor detecting device, capacitance detecting device and anti-overflow detection device are located at pot It covers, and at least partly exposed lower surface in pot cover of first electrode and second electrode, can be convenient anti-overflow detection device pair The detection of vacuole in cooking device.

As a kind of optional embodiment of the utility model embodiment, cooking device includes electromagnetic oven and cookware.

As a kind of optional embodiment of the utility model embodiment, electromagnetic oven includes controller, controller with it is anti-overflow Detection device electrical connection, for carrying out anti-overflow control according to spill over.

Anti-overflow control is carried out according to spill over by controller, can occur overflowing pot phenomenon to avoid cooking device.

The construction of the utility model and its other purpose of utility model and beneficial effect will be in conjunction with the accompanying drawings Description of preferred embodiments and it is more obvious and easy to understand.

Detailed description of the invention

Fig. 1 is a kind of structural schematic diagram of cooking device provided by the embodiment of the utility model；

Fig. 2 is a kind of electrical block diagram of cooking device provided by the embodiment of the utility model.

Description of symbols:

1- cookware；2- electromagnetic oven；

11- first electrode；12- second electrode；

13- resistor detecting device；14- capacitance detecting device；

The anti-overflow detection device of 15-；10- pot cover；

21- controller.

Specific embodiment

It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to The range of the utility model protection.

Overflowing pot problem occurs in order to prevent, current cooking device is that anti-overflow detecting electrode and reference are arranged on cookware mostly Electrode, according to the resistance between anti-overflow detecting electrode and reference electrode to determine whether overflowing.However, in culinary art, due to cooking It prepares food the difference of food, the conductivity difference of solution can be very big in cookware；In addition, production when different cooking methods also results in spilling The difference in size of raw vacuole is very big, and vacuole is smaller, and the solution proportion contained in vacuole is bigger, conversely, vacuole is bigger, contains in vacuole Solution proportion it is then smaller.If the conductivity very little of solution, and the vacuole that generates is very big when overflowing, then anti-overflow detecting electrode and Resistance change between reference electrode will very little, controller is difficult to judge to overflow, to phenomenon of failing to judge occur, cause The accuracy rate of anti-overflow detection is not high.

In view of the above technical problems, the utility model provides a kind of cooking device, mainly by being used to contain in cooking device Setting first electrode and second electrode at the top of the cavity of food materials, and the resistance inspection being connected in setting with first electrode and second electrode While surveying device, the capacitance detecting device that is connected with first electrode and second electrode is set, and with resistor detecting device and The connected anti-overflow detection device of capacitance detecting device is judged whether to produce according to resistance value and capacitance simultaneously by anti-overflow detection device Raw spill over, to improve the accuracy rate of anti-overflow detection.

With reference to the accompanying drawing, the technical solution of the utility model is described in detail.It is described below with reference to attached drawing Embodiment be exemplary, it is intended to for explaining the utility model, and should not be understood as limiting the present invention.

Fig. 1 is a kind of structural schematic diagram of cooking device provided by the embodiment of the utility model, and Fig. 2 is the utility model implementation A kind of electrical block diagram for cooking device that example provides, as depicted in figs. 1 and 2, cooking device provided in this embodiment include: the One electrode 11, second electrode 12, resistor detecting device 13, capacitance detecting device 14 and anti-overflow detection device 15；Wherein:

First electrode 11 and second electrode 12 are arranged at intervals at the top of the cavity for containing food materials of cooking device；

Resistor detecting device 13 is electrically connected with first electrode 11 and second electrode 12 respectively, for detecting 11 He of first electrode Resistance value between second electrode 12；

Capacitance detecting device 14 is electrically connected with first electrode 11 and second electrode 12 respectively, for detecting 11 He of first electrode Capacitance between second electrode 12；

Anti-overflow detection device 15 is electrically connected with resistor detecting device 13 and capacitance detecting device 14 respectively, for according to resistance Value and capacitance judge whether to generate spill over.

In the present embodiment, cooking device specifically can be electromagnetic oven utensil (including electromagnetic oven and cookware), health-promotion kettle, soya-bean milk Mechanical, electrical rice cooker or electric pressure pot etc. need to carry out the electric cooking appliance of anti-overflow control, Fig. 1 be by taking cooking device is electromagnetic oven utensil as an example into Row exemplary illustration, is not intended to limit the utility model.Below also with cooking device includes electromagnetic oven 2 and cookware 1 to illustrate Example property illustrates the technical solution of the utility model.

Specifically, if not overflowing, resistance is very big between first electrode 11 and second electrode 12 when cooking congee or Baoshang； If overflowing, when the vacuole that food boiling generates touches first electrode 11 and second electrode 12, first electrode 11 and second electrode Resistance between 12 becomes smaller under the connection function for overflowing vacuole, meanwhile, under the touching effect of vacuole, first electrode 11 and the Coupled capacitor can be generated between two electrodes 12.In the present embodiment, anti-overflow detection device 15 is according to first electrode 11 and second electrode Resistance and capacitor between the 12 changed characteristic when food overflows, at the same detect first electrode 11 and second electrode 12 it Between resistance and capacitor, in conjunction with resistance value and capacitance to determine whether occur spillover, compared to only with resistance value carry out The mode of anti-overflow detection can effectively improve the accuracy rate of anti-overflow detection.

Specifically judge when, for resistance value and capacitance, multiple threshold ranges can be respectively set, in conjunction with resistance value with Threshold range locating for capacitance, to determine whether spillover occurs.Such as: two resistance range (first resistor models of setting Enclose and be greater than second resistance range with second resistance range, first resistor range, and be less than first electrode 11 and second electrode 12 it Between maximum resistance) and two capacitance ranges (first capacitor range and the second capacitance range, first capacitor range is less than the second electricity Hold range, and be greater than minimum capacity between first electrode 11 and second electrode 12), when resistance value be located at second resistance range or It when person's capacitance is located at the second capacitance range, determines and spillover occurs, spill over is generated, so as to the controller in cooking device 21 carry out anti-overflow control；Otherwise, it determines spillover does not occur.Certainly, above-mentioned judgment method is intended only as a kind of example, can also To be realized using other methods, the threshold range of setting is also possible to three or more.

By taking the method for the example above as an example, if the conductivity very little of solution, and the vacuole generated when spilling is very big, then the Resistance change between one electrode 11 and second electrode 12 will very little, i.e. electricity between first electrode 11 and second electrode 12 Resistance value is larger, and resistance value is in first resistor range or greater than the maximum resistance value in first resistor range.If only with electricity Resistance value carries out spilling judgement, and anti-overflow detection device 15 can generally be judged to not overflow, to phenomenon of failing to judge occur.And the present embodiment In, judged in combination with resistance value and capacitance, first electrode 11 and second electrode 12 generate coupling due to the touching of vacuole Capacitor is closed, the capacitance of coupled capacitor is in the second capacitance range, and meeting the condition of spilling, (resistance value is located at second resistance range Or capacitance is located at the second capacitance range), anti-overflow detection device 15 then determines to overflow, and so as to avoid phenomenon of failing to judge, mentions The accuracy rate of high anti-overflow detection.

In the present embodiment, first electrode 11 and second electrode 12 are specifically as follows pellet electrode, or columnar electrode Etc. other shapes electrode.Fig. 1 is that example is carried out so that first electrode 11 is pellet electrode, second electrode 12 is columnar electrode as an example Property explanation.

Resistor detecting device 13 can obtain first electrode by the voltage in detection first electrode 11 or second electrode 12 Resistance value between 11 and second electrode 12；Capacitance detecting device 14 can be by detection first electrode 11 or second electrode 12 Voltage obtain the charge and discharge time, and then the capacitor between first electrode 11 and second electrode 12 is obtained according to the charge and discharge time Value；Anti-overflow detection device 15 has arbitration functions, the resistance value and capacitance detecting that can be detected according to resistor detecting device 13 The capacitance that device 14 detects judges whether that spillover occurs, and generates spill over when spillover occurs determining. The present embodiment does not limit for the specific structure of resistor detecting device 13, capacitance detecting device 14 and anti-overflow detection device 15, as long as Corresponding functions can be realized.

In specific implementation, resistor detecting device 13 and capacitance detecting device 14 can be examined simultaneously with certain detection cycle It surveys or sequence detection, such as: detection resistance value and capacitance simultaneously every 5 seconds, alternatively, primary every detection in 5 seconds, when detection The first detection resistance value of resistor detecting device 13, then capacitance detecting device 14 detects capacitance again, alternatively, detecting one every 5 seconds Secondary, capacitance detecting device 14 first detects capacitance when detection, then the detection resistance value again of resistor detecting device 13.

When carrying out anti-overflow judgement, anti-overflow detection device 15 can be according to the judgement of the resistance value and capacitance of single acquisition No generation spill over, the resistance value and capacitance that can also be acquired according to continuous several times judge whether to generate spill over, example Such as: the Median Resistance and capacitor intermediate value of the resistance value and capacitance that are acquired according to continuous 3 times, alternatively, resistance mean value and capacitor are equal Value judges whether to generate spill over.

In the present embodiment, cooking device further includes that micro-control unit (Microcontroller Unit, MCU) (does not show in Fig. 1 Out), resistor detecting device 13 and capacitance detecting device 14 can integrate in MCU, to reduce the circuit complexity of cooking device.

Wherein, MCU has the function of touch key-press, in the present embodiment, the touch key-press function of MCU is utilized to realize first electrode The detection of capacitance between 11 and second electrode 12.

As shown in Fig. 2, in specific implementation, first electrode 11 respectively with the first input and output (Input of MCU Output, IO) port IO1 and the second I/O port IO2 electrical connection, second electrode 12 be grounded GND；Cooking device further includes first resistor R1 and reference capacitance C1, one end of first resistor R1 are connect with the second I/O port IO2, and the other end of first resistor R1 is respectively with One I/O port IO1 and first electrode 11 connect, one end of reference capacitance C1 and the touch key-press reference capacitance input port of MCU The other end of TKCX connection, reference capacitance C1 is grounded GND.

Wherein, the first I/O port IO1 and the second I/O port IO2 is and touch key-press (Touch Key, TK) function and digital-to-analogue Convert the I/O port of (Analog-to-Digital converter, AD) function common-use tunnel.

First resistor R1 is current-limiting resistance, and resistance value size is set as needed；In addition, by selecting different resistance values, It can satisfy different capacitance detecting sensitivity requirements.

The reference capacitance C1 of touch key-press reference capacitance input port TKCX connection is the fixation of the touch key-press function of MCU Reference capacitance namely reference capacitance C1 are the fixed capacity for being connected to the first electrode 11 of MCU touch key-press port；MCU can be with It detects the voltage value on reference capacitance C1, the charge and discharge time of reference capacitance C1 is obtained according to the change procedure of voltage value.When When manpower or other electric conductors touch first electrode 11, an inductance capacitance C can be generated and be coupled on reference capacitance C1, thus The charge and discharge time that MCU is detected can change；MCU can calculate a capacitor according to the charge and discharge time after variation Value, can be obtained the induced electricity between first electrode 11 and second electrode 12 for the capacitance that the capacitance subtracts reference capacitance C1 The capacitance of appearance.

In order to guarantee to detect that inductance capacitance C, reference capacitance C1 answer as small as possible.

MCU realizes resistance detection and capacitance detecting function simultaneously, when being detected, then uses sequence detection mode, i.e., The resistance value between first electrode 11 and second electrode 12 is first detected, between rear detection detection first electrode 11 and second electrode 12 Capacitance, alternatively, first detect the capacitance between first electrode 11 and second electrode 12, rear detection detection 11 He of first electrode Resistance value between second electrode 12.

When detection resistance value, the second I/O port IO2 is set to AD input channel by MCU, and it is defeated to control the first I/O port IO1 High level out calculates the resistance between first electrode 11 and second electrode 12 according to the voltage signal of the second I/O port IO2 acquisition Value.

When detecting capacitance, MCU by the first I/O port IO1 and the second I/O port IO2 be set to touch key-press simulation it is defeated Enter channel, capacitor charge and discharge time, and root are calculated according to the voltage signal that the first I/O port IO1 or the second I/O port IO2 is acquired The capacitance between first electrode 11 and second electrode 12 is calculated according to the capacitance of capacitor charge and discharge time and reference capacitance C1.

Specifically, the resistance R between first electrode 11 and second electrode 12 is very big, and inductance capacitance C is basic when not overflowing When being zero, MCU detection resistance value, the voltage signal of the second I/O port IO2 acquisition is high level signal, voltage value and the first IO The voltage value of port IO1 output is of substantially equal；When MCU detects capacitance, MCU is according to the first I/O port IO1 or the second I/O port The capacitor charge and discharge time that the voltage signal of IO2 acquisition calculates is essentially the reference capacitance C1 intrinsic capacitor charge and discharge time, right Capacitance between the first electrode 11 that should be calculated and second electrode 12 is substantially zeroed.

When overflowing, the resistance R between first electrode 11 and second electrode 12 becomes smaller, and inductance capacitance C increases, MCU detection When resistance value, the voltage value of the voltage signal of the second I/O port IO2 acquisition is reduced, substantially zeroed；When MCU detects capacitance, MCU It is greater than according to the capacitor charge and discharge time that the voltage signal that the first I/O port IO1 or the second I/O port IO2 is acquired calculates with reference to electricity Hold the C1 intrinsic capacitor charge and discharge time, the capacitance between the corresponding first electrode 11 calculated and second electrode 12 is one Biggish value, usually several pF (such as 5pF).

It should be noted that the judgement of capacitance can also be replaced by capacitor charge and discharge by MCU when carrying out anti-overflow judgement The judgement of time directly judges whether that spillover occurs according to capacitor charge and discharge time and resistance value.

In the present embodiment, cooking device can also include second resistance R2, one end of second resistance R2 and the first I/O port IO1 Electrical connection, the other end of second resistance R2 are connect with the other end of first resistor R1 and first electrode 11 respectively.

Wherein, second resistance R2 is divider resistance, and resistance value size is set as needed.

In order to further decrease circuit complexity, in the present embodiment, anti-overflow detection device 15 also be can integrate in MCU.

As shown in Figure 1, cooking device includes pot cover, first electrode 11, second electrode 12, resistance detection dress in the present embodiment Setting 13, capacitance detecting device 14 and anti-overflow detection device 15 can be located on pot cover 10, and first electrode 11 and second electrode 12 At least partly exposed lower surface in pot cover 10, the detection in order to anti-overflow detection device 15 to the vacuole in cooking device.

In specific implementation, resistor detecting device 13, capacitance detecting device 14 and anti-overflow detection device 15 can specific positions In the handle of pot cover 10, and it can integrate in MCU in the handle.

In the present embodiment, electromagnetic oven 2 includes controller 21, and controller 21 is electrically connected with anti-overflow detection device 15, is used for root Anti-overflow control is carried out according to spill over, to avoid there is overflowing pot phenomenon.

Wherein, anti-overflow detection device 15 can be located on pot cover 10, be integrated in the MCU in pot cover 10, to improve electromagnetism The process performance of furnace 2, Fig. 1 are illustrated so that anti-overflow detection device 15 is located on pot cover 10 as an example；Anti-overflow detection dress Setting 15 can also be located in electromagnetic oven 2, be integrated in the controller 21 of electromagnetic oven 2, to facilitate control, when specific implementation can root According to needing to be arranged, the present embodiment is not specially limited.

It can be communicated by wired or wireless way between controller 21 and the MCU of pot cover 10 in electromagnetic oven 2.

By taking anti-overflow detection device 15 is integrated in the MCU on pot cover 10 as an example, when MCU generates spill over, believe overflowing Number it is sent to controller 21 in electromagnetic oven 2 in real time, when controller 21 receives the spill over of MCU transmission, carries out anti-overflow Control, prevents overflowing pot phenomenon.

When specifically carrying out anti-overflow control, it can control electromagnetic oven 2 and stop heating, the heating of electromagnetic oven 2 can also be reduced Power.

In addition, some cooking foods need higher heating temperature just to can achieve the effect that preferably boils, thus, this reality It applies in example, electromagnetic oven 2 can be controlled again to carry out anti-overflow control after carrying out anti-overflow control, after certain period of time Heating power heating before system, can guarantee that the food in cookware 1 reaches the effect that preferably boils in this way.Wherein, the period It can determine that, that is, according to after anti-overflow control, the soup in cookware 1 is restored to from overflow state according to the effect of anti-overflow control Time required for non-overflow state determines.

Cooking device provided in this embodiment, by the way that first electrode is arranged at the top of the cavity for containing food materials of cooking device And second electrode, and while the resistor detecting device that setting is connected with first electrode and second electrode, setting and the first electricity The capacitance detecting device that pole is connected with second electrode, and the anti-overflow detection being connected with resistor detecting device and capacitance detecting device Device is judged whether to generate spill over according to resistance value and capacitance simultaneously by anti-overflow detection device, can effectively improved The accuracy rate of anti-overflow detection.

In the description of the present invention, it should be understood that term " first ", " second " are used for description purposes only, and It cannot be understood as indicating or implying relative importance or implicitly indicate the quantity of indicated technical characteristic.It defines as a result, The feature of " first ", " second " can explicitly or implicitly include at least one of the features.

In addition, in the present invention unless specifically defined or limited otherwise, term " connection ", " connected ", " Gu Calmly ", " installation " etc. shall be understood in a broad sense, such as can be mechanical connection, be also possible to be electrically connected；It can be and be directly connected to, Can the connection inside two elements or the interaction relationship of two elements be can be, removed indirectly connected through an intermediary It is non-separately to have specific restriction, for the ordinary skill in the art, it can understand that above-mentioned term exists as the case may be Concrete meaning in the utility model.

Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new The range of each embodiment technical solution of type.

Claims (10)

1. a kind of cooking device characterized by comprising first electrode (11), second electrode (12), resistor detecting device (13), Capacitance detecting device (14) and anti-overflow detection device (15)；

The first electrode (11) and the second electrode (12) are arranged at intervals on the chamber for being used to contain food materials of the cooking device At the top of body；

The resistor detecting device (13) is electrically connected with the first electrode (11) and the second electrode (12) respectively, for examining Survey the resistance value between the first electrode (11) and second electrode (12)；

The capacitance detecting device (14) is electrically connected with the first electrode (11) and the second electrode (12) respectively, for examining Survey the capacitance between the first electrode (11) and second electrode (12)；

The anti-overflow detection device (15) is electrically connected with the resistor detecting device (13) and the capacitance detecting device (14) respectively It connects, generates spill over for judging whether according to the resistance value and the capacitance.

2. cooking device according to claim 1, which is characterized in that the cooking device further includes micro-control unit MCU, described Resistor detecting device (13) and the capacitance detecting device (14) are integrated in the MCU.

3. cooking device according to claim 2, which is characterized in that the first electrode (11) respectively with the MCU One input and output I/O port and the electrical connection of the second I/O port, second electrode (12) ground connection；The cooking device further includes first Resistance and reference capacitance, one end of the first resistor are connect with second I/O port, the other end point of the first resistor It is not connect with the first input and output I/O port and the first electrode (11), one end of the reference capacitance and the MCU Touch key-press reference capacitance input port connection, the reference capacitance the other end ground connection.

4. cooking device according to claim 3, which is characterized in that the MCU is used for when detecting the resistance value, by institute It states the second I/O port and is set to analog-to-digital conversion AD input channel, and control the first input and output I/O port output high level, root The resistance value between the first electrode (11) and second electrode (12) is calculated according to the voltage signal of second I/O port acquisition.

5. cooking device according to claim 3, which is characterized in that the MCU is also used to when detecting the capacitance, will The first input and output I/O port and second I/O port are set to touch key-press analog input channel, according to described first Input and output I/O port or the voltage signal of second I/O port acquisition calculate the capacitor charge and discharge time, and according to the capacitor The capacitance of charge and discharge time and the reference capacitance calculates the capacitor between the first electrode (11) and second electrode (12) Value.

6. cooking device according to claim 3, which is characterized in that the cooking device further includes second resistance, and described second One end of resistance is electrically connected with the first input and output I/O port, and the other end of the second resistance is electric with described first respectively The other end of resistance and the first electrode (11) connection.

7. cooking device according to claim 2, which is characterized in that the anti-overflow detection device (15) is integrated in the MCU In.

8. cooking device according to claim 1-7, which is characterized in that the cooking device includes pot cover (10), institute State first electrode (11), the second electrode (12), the resistor detecting device (13), the capacitance detecting device (14) and institute It states anti-overflow detection device (15) to be located on the pot cover (10), and the first electrode (11) and the second electrode (12) are extremely The exposed lower surface in the pot cover (10) of small part.

9. cooking device according to claim 1, which is characterized in that the cooking device includes electromagnetic oven (2) and cookware (1).

10. cooking device according to claim 9, which is characterized in that the electromagnetic oven (2) includes controller (21), described Controller (21) is electrically connected with the anti-overflow detection device (15), for carrying out anti-overflow control according to the spill over.