CN104422556A - Electric pressure cooker and pressure detecting device and method thereof - Google Patents
Electric pressure cooker and pressure detecting device and method thereof Download PDFInfo
- Publication number
- CN104422556A CN104422556A CN201310393020.5A CN201310393020A CN104422556A CN 104422556 A CN104422556 A CN 104422556A CN 201310393020 A CN201310393020 A CN 201310393020A CN 104422556 A CN104422556 A CN 104422556A
- Authority
- CN
- China
- Prior art keywords
- pressure
- cooking saucepan
- electric
- electric pressure
- pressure cooking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Cookers (AREA)
Abstract
The invention discloses a pressure detecting device of an electric pressure cooker. The device comprises a zero pressure switch, a pressure sensor and a controller, wherein the zero pressure switch is turned on/off according to relative pressure value in the electric pressure cooker; the pressure sensor detects first absolute pressure value in the electric pressure cooker when the zero pressure switch is turned off and detects second absolute pressure value in the electric pressure cooker when the zero pressure switch is turned on; the controller is respectively connected with the zero pressure switch and the pressure sensor and acquires the relative pressure value in the electric pressure cooker according to the first absolute pressure value and the second absolute pressure value. The pressure detecting device can modify parameters of the pressure sensor by using the controller, and can reliably and accurately detect the relative pressure value in the electric pressure cooker at different altitudes and different environmental temperatures, so that normal pressure control of the electric pressure cooker is guaranteed, and the using safety of a product is improved. The invention also discloses a pressure detecting method of the electric pressure cooker and the electric pressure cooker which is provided with the pressure detecting device.
Description
Technical field
The present invention relates to household electrical appliance technical field, particularly a kind of pressure-detecting device of electric pressure cooking saucepan, a kind of pressure detection method of electric pressure cooking saucepan and a kind of electric pressure cooking saucepan with this pressure-detecting device.
Background technology
Existing electric pressure cooking saucepan is when using pressure transducer to carry out pressure detection, and detected atmospheric pressure value is absolute pressure value, and electric control gear is then according to the absolute pressure value detected, control voltage power pot heats, thus realizes the cooking process of electric pressure cooking saucepan.
In Different Altitude, at varying environment temperature, atmospheric pressure can be different, and therefore, when the difference of the absolute pressure value in relative pressure in pot and pot and atmospheric pressure is 0KPA, the absolute pressure value in corresponding pot is also different.Like this, in the use procedure of electric pressure cooking saucepan, the force value that pressure transducer detects is absolute pressure value, direct employing absolute pressure value controls the pressure in pot, the relative pressure in pot can be caused inaccurate, thus electric control gear can not relative pressure correctly in control voltage power pot, has influence on the use safety of user.
Summary of the invention
Object of the present invention is intended to solve above-mentioned technological deficiency at least to a certain extent.
For this reason, first object of the present invention is the pressure-detecting device proposing a kind of electric pressure cooking saucepan, this pressure-detecting device can utilize the parameter of controller to pressure transducer to revise, the relative pressure in electric pressure cooking saucepan reliably can be detected exactly at Different Altitude, varying environment temperature, ensure that the normal pressure of electric pressure cooking saucepan controls, improve the safety in utilization of product.
Second object of the present invention is the pressure detection method proposing a kind of electric pressure cooking saucepan.3rd object of the present invention is to propose a kind of electric pressure cooking saucepan.
For achieving the above object, the pressure-detecting device of a kind of electric pressure cooking saucepan that first aspect present invention embodiment proposes, comprising: zero-voltage-switch, described zero-voltage-switch is according to the relative pressure closed and disconnected in electric pressure cooking saucepan; Pressure transducer, described pressure transducer detects the first absolute pressure value in described electric pressure cooking saucepan when described zero-voltage-switch disconnects, described pressure transducer detects the second absolute pressure value in described electric pressure cooking saucepan when described zero-voltage-switch closes; Controller, described controller is connected with pressure transducer respectively with described zero-voltage-switch, and described controller obtains the relative pressure in described electric pressure cooking saucepan according to described first absolute pressure value and the second absolute pressure value.
According to the pressure-detecting device of the electric pressure cooking saucepan that the embodiment of the present invention proposes, pressure transducer is utilized to detect the first absolute pressure value in electric pressure cooking saucepan when zero-voltage-switch disconnects, the second absolute pressure value in electric pressure cooking saucepan is detected when zero-voltage-switch closes, thus controller obtains the relative pressure in electric pressure cooking saucepan according to the first absolute pressure value and the second absolute pressure value, realize revising the parameter of pressure transducer, solve electric pressure cooking saucepan at Different Altitude, varying environment temperature, pressure detection and control inaccurate problem.Further, by the relative pressure in electric pressure cooking saucepan reliably being detected exactly, ensureing that the normal pressure of electric pressure cooking saucepan controls, improving the safety in utilization of product, ensure the use safety of user, fully meet the request for utilization of user.
In one embodiment of the invention, when described zero-voltage-switch disconnects, the relative pressure in described electric pressure cooking saucepan is 0; When described zero-voltage-switch closes, the relative pressure in described electric pressure cooking saucepan is not 0.
Wherein, the relative pressure in electric pressure cooking saucepan is the difference of described second absolute pressure value and described first absolute pressure value.
Further, described controller controls described electric pressure cooking saucepan according to the relative pressure in described electric pressure cooking saucepan.
In one particular embodiment of the present invention, described controller comprises the peripheral circuit of control chip and control chip, wherein, the peripheral circuit of described control chip comprises: the first resistance, one end of described first resistance is connected with the output terminal of described pressure transducer, the other end ground connection of described first resistance; First diode, described first diode and described first resistor coupled in parallel, the plus earth of described first diode, the negative electrode of described first diode is connected with one end of described first resistance; Second diode, described second diode and described first Diode series, the anode of described second diode is connected with the negative electrode of described first diode, and the negative electrode of described second diode is connected with default power supply; First electric capacity of series connection and the second resistance, one end ground connection of described first electric capacity, the other end of described first electric capacity is connected respectively with described control chip one end with described second resistance, and the other end of described second resistance is connected with one end of described first resistance.
For achieving the above object, second aspect present invention embodiment proposes a kind of pressure detection method of electric pressure cooking saucepan, comprises the following steps: the on off state detecting zero-voltage-switch in electric pressure cooking saucepan; When described zero-voltage-switch disconnects, detect the first absolute pressure value in described electric pressure cooking saucepan; When described zero-voltage-switch closes, detect the second absolute pressure value in described electric pressure cooking saucepan; The relative pressure in described electric pressure cooking saucepan is obtained according to described first absolute pressure value and the second absolute pressure value.
According to the pressure detection method of the electric pressure cooking saucepan that the embodiment of the present invention proposes, by detecting the on off state of zero-voltage-switch in electric pressure cooking saucepan, the first absolute pressure value in electric pressure cooking saucepan is detected when zero-voltage-switch disconnects, the second absolute pressure value in electric pressure cooking saucepan is detected when zero-voltage-switch closes, thus the relative pressure obtained according to the first absolute pressure value and the second absolute pressure value in electric pressure cooking saucepan, solve electric pressure cooking saucepan at Different Altitude, varying environment temperature, pressure detection and control inaccurate problem.Further, by the relative pressure in electric pressure cooking saucepan reliably being detected exactly, ensureing that the normal pressure of electric pressure cooking saucepan controls, improving the safety in utilization of product, ensure the use safety of user, fully meet the request for utilization of user.In addition, the pressure detection method of this electric pressure cooking saucepan is simple and reliable, is easy to carry out.
In one embodiment of the invention, when described zero-voltage-switch disconnects, the relative pressure in described electric pressure cooking saucepan is 0; When described zero-voltage-switch closes, the relative pressure in described electric pressure cooking saucepan is not 0.
Wherein, the relative pressure in described electric pressure cooking saucepan is the difference of described second absolute pressure value and described first absolute pressure value.
Further, the pressure detection method of above-mentioned electric pressure cooking saucepan, also comprises: control described electric pressure cooking saucepan according to the relative pressure in described electric pressure cooking saucepan.
For achieving the above object, third aspect present invention embodiment proposes a kind of electric pressure cooking saucepan, comprises the pressure-detecting device of above-mentioned electric pressure cooking saucepan.
According to the electric pressure cooking saucepan that the embodiment of the present invention proposes, can revise the parameter of the pressure transducer in electric pressure cooking saucepan, solve electric pressure cooking saucepan at Different Altitude, varying environment temperature, pressure detection and control inaccurate problem.Further, by the relative pressure in electric pressure cooking saucepan reliably being detected exactly, ensureing that the normal pressure of electric pressure cooking saucepan controls, improving the safety in utilization of product, ensure the use safety of user, fully meet the request for utilization of user.
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 block diagram of the pressure-detecting device of electric pressure cooking saucepan according to the embodiment of the present invention;
Fig. 2 is the circuit diagram of the pressure-detecting device of electric pressure cooking saucepan according to the present invention's specific embodiment;
Fig. 3 is the process flow diagram of the pressure detection method of electric pressure cooking saucepan according to the embodiment of the present invention;
Fig. 4 is the process flow diagram of the pressure detection method of electric pressure cooking saucepan according to an embodiment of the invention; And
Fig. 5 is the block diagram of the electric pressure cooking saucepan according to the embodiment of the present invention.
Reference numeral:
Peripheral circuit 302, first resistance R1, the first diode D1 of zero-voltage-switch 10, pressure transducer 20, controller 30, control chip 301, control chip, the second diode D2, the first electric capacity C1 and the second resistance R2.
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.
With reference to description below and accompanying drawing, these and other aspects of embodiments of the invention will be known.Describe at these and in accompanying drawing, specifically disclose some particular implementation in embodiments of the invention, representing some modes of the principle implementing embodiments of the invention, but should be appreciated that the scope of embodiments of the invention is not limited.On the contrary, embodiments of the invention comprise fall into attached claims spirit and intension within the scope of all changes, amendment and equivalent.
Describe the pressure-detecting device of electric pressure cooking saucepan according to embodiment of the present invention proposition, the pressure detection method of electric pressure cooking saucepan with reference to the accompanying drawings and there is the electric pressure cooking saucepan of above-mentioned pressure-detecting device.
Fig. 1 is the block diagram of the pressure-detecting device of electric pressure cooking saucepan according to the embodiment of the present invention.As shown in Figure 1, the pressure-detecting device of this electric pressure cooking saucepan comprises: zero-voltage-switch 10, pressure transducer 20 and controller 30.
Wherein, zero-voltage-switch 10 is according to the relative pressure closed and disconnected in electric pressure cooking saucepan.Pressure transducer 20 detects the first absolute pressure value in electric pressure cooking saucepan when zero-voltage-switch 10 disconnects, pressure transducer 20 detects the second absolute pressure value in electric pressure cooking saucepan when zero-voltage-switch 10 closes.Controller 30 is connected with pressure transducer 20 respectively with zero-voltage-switch 10, and controller 30 obtains the relative pressure in electric pressure cooking saucepan according to the first absolute pressure value and the second absolute pressure value.
In one embodiment of the invention, when zero-voltage-switch 10 disconnects, the relative pressure in electric pressure cooking saucepan is 0; When zero-voltage-switch 10 closes, the relative pressure in electric pressure cooking saucepan is not 0.That is, when zero-voltage-switch disconnects, represent in electric pressure cooking saucepan without pressure (not playing pressure), namely the pressure in pot equals local atmospheric pressure, and the pot inner pressure that pressure transducer 20 detects i.e. the first absolute pressure value is the absolute pressure value of local environment, is designated as A kPa, wherein, different height above sea level and environment temperature, corresponding absolute pressure value A is different, and the pressure data detected i.e. the first absolute pressure value is sent to controller 30 by pressure transducer 20; When zero-voltage-switch closes air pressure, pressure is had in pot, the pressure that now pressure transducer 20 detects is absolute pressure value i.e. the second absolute pressure value in pot, is designated as B kPa, and the absolute pressure value in pot now i.e. the second absolute pressure value is sent to controller 30.
Controller 30 compares according to A and B received, and both differences are the relative pressure such as P in electric pressure cooking saucepan, i.e. P=B-A.Namely say, the relative pressure in electric pressure cooking saucepan is the difference of the second absolute pressure value B and the first absolute pressure value A.For different height above sea level, under different environment temperatures, A value can change, and by the difference comparsion of computing formula, in the P value obtained and pot, relative pressure is by the impact of height above sea level and environment temperature, thus reaches the object revising pressure transducer parameter.
In an embodiment of the present invention, controller 30 controls electric pressure cooking saucepan according to the relative pressure P in electric pressure cooking saucepan, wherein, be relative pressure in pot after corrected parameter by the P value calculated, eliminate the impact of Different Altitude and varying environment temperature, achieve the reliable Stress control accurately of electric pressure cooking saucepan.
In one particular embodiment of the present invention, as shown in Figure 2, controller 30 comprises the peripheral circuit 302 of control chip 301 and control chip, wherein, the peripheral circuit 302 of control chip comprises: the first resistance R1, the first diode D1, the second diode D2, the first electric capacity C1 and the second resistance R2.
Wherein, one end of the first resistance R1 is connected with the output terminal TTOP of pressure transducer 20, the other end ground connection of the first resistance R1; First diode D1 is in parallel with the first resistance R1, the plus earth of the first diode D1, and the negative electrode of the first diode D1 is connected with one end of the first resistance R1; Second diode D2 connects with the first diode D1, and the anode of the second diode D2 is connected with the negative electrode of the first diode D1, and the negative electrode of the second diode D2 is connected with default power vd D1; First electric capacity C1 and the second resistance R2 connects, one end ground connection of the first electric capacity C1, the other end of the first electric capacity C1 is connected with one end of the second resistance R2 respectively with the pin TTOP-IC of control chip 301, and the other end of the second resistance R2 is connected with one end of the first resistance R1.
When electric pressure cooking saucepan is in (without pressure) when relative pressure is 0 kPa, controller 30 records the first absolute pressure value A keeping pressure transducer 20 to detect.When relative pressure in pot is not 0 kPa (having pressure), controller 30 records the second absolute pressure value B in pot that pressure transducer 20 detects, and controller 30, by computing formula P=B-A, can obtain the relative pressure P in pot.In the P value calculated and pot, relative pressure is by the impact of height above sea level and environment temperature, thus reaches the object revising pressure transducer parameter.
According to the pressure-detecting device of the electric pressure cooking saucepan that the embodiment of the present invention proposes, pressure transducer is utilized to detect the first absolute pressure value in electric pressure cooking saucepan when zero-voltage-switch disconnects, the second absolute pressure value in electric pressure cooking saucepan is detected when zero-voltage-switch closes, thus controller obtains the relative pressure in electric pressure cooking saucepan according to the first absolute pressure value and the second absolute pressure value, realize revising the parameter of pressure transducer, solve electric pressure cooking saucepan at Different Altitude, varying environment temperature, pressure detection and control inaccurate problem.Further, by the relative pressure in electric pressure cooking saucepan reliably being detected exactly, ensureing that the normal pressure of electric pressure cooking saucepan controls, improving the safety in utilization of product, ensure the use safety of user, fully meet the request for utilization of user.
Fig. 3 is the process flow diagram of the pressure detection method of electric pressure cooking saucepan according to the embodiment of the present invention.As shown in Figure 3, the pressure detection method of this electric pressure cooking saucepan comprises the following steps:
S1, detects the on off state of zero-voltage-switch in electric pressure cooking saucepan.
S2, when zero-voltage-switch disconnects, detects the first absolute pressure value in electric pressure cooking saucepan.
Particularly, when zero-voltage-switch disconnects, the relative pressure in electric pressure cooking saucepan is 0, and electric pressure cooking saucepan has not started pressure, and wherein, the relative pressure in electric pressure cooking saucepan is the difference of absolute pressure value in electric pressure cooking saucepan and atmospheric pressure value.That is, when zero-voltage-switch disconnects, the pressure in electric pressure cooking saucepan equals local atmospheric pressure, and the first absolute pressure value A detected is local atmospheric pressure value.
S3, when zero-voltage-switch closes, detects the second absolute pressure value in electric pressure cooking saucepan.
Particularly, when zero-voltage-switch closes, the relative pressure in electric pressure cooking saucepan is not 0, and electric pressure cooking saucepan has started pressure.That is, when zero-voltage-switch closes, the second absolute pressure value B detected is the absolute pressure value in electric pressure cooking saucepan.
S4, obtains the relative pressure in electric pressure cooking saucepan according to the first absolute pressure value and the second absolute pressure value.Wherein, the relative pressure P in electric pressure cooking saucepan is the difference of the second absolute pressure value B and the first absolute pressure value A, i.e. P=B-A.
Further, in one embodiment of the invention, as shown in Figure 4, after step s4, the pressure detection method of above-mentioned electric pressure cooking saucepan also comprises:
S5, controls electric pressure cooking saucepan according to the relative pressure in electric pressure cooking saucepan.
For Different Altitude, varying environment temperature, atmospheric pressure can change, and also namely the first absolute pressure value A can change.By the difference comparsion of the second absolute pressure value B and the first absolute pressure value A, in the pot obtained, relative pressure P is not subject to the impact of height above sea level and environment temperature, thus have modified the parameter of pressure transducer, eliminate the impact of Different Altitude and varying environment temperature, achieve the reliable Stress control accurately of electric pressure cooking saucepan.
According to the pressure detection method of the electric pressure cooking saucepan that the embodiment of the present invention proposes, by detecting the on off state of zero-voltage-switch in electric pressure cooking saucepan, the first absolute pressure value in electric pressure cooking saucepan is detected when zero-voltage-switch disconnects, the second absolute pressure value in electric pressure cooking saucepan is detected when zero-voltage-switch closes, thus the relative pressure obtained according to the first absolute pressure value and the second absolute pressure value in electric pressure cooking saucepan, solve electric pressure cooking saucepan at Different Altitude, varying environment temperature, pressure detection and control inaccurate problem.Further, by the relative pressure in electric pressure cooking saucepan reliably being detected exactly, ensureing that the normal pressure of electric pressure cooking saucepan controls, improving the safety in utilization of product, ensure the use safety of user, fully meet the request for utilization of user.In addition, the pressure detection method of this electric pressure cooking saucepan is simple and reliable, is easy to carry out.
Fig. 5 is the block diagram of the electric pressure cooking saucepan according to embodiment of the present invention proposition.As shown in Figure 5, this electric pressure cooking saucepan 501 comprises the pressure-detecting device 502 of above-mentioned electric pressure cooking saucepan.
According to the electric pressure cooking saucepan that the embodiment of the present invention proposes, can revise the parameter of the pressure transducer in electric pressure cooking saucepan, solve electric pressure cooking saucepan at Different Altitude, varying environment temperature, pressure detection and control inaccurate problem.Further, by the relative pressure in electric pressure cooking saucepan reliably being detected exactly, ensureing that the normal pressure of electric pressure cooking saucepan controls, improving the safety in utilization of product, ensure the use safety of user, fully meet the request for utilization of user.
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 pressure-detecting device for electric pressure cooking saucepan, is characterized in that, comprising:
Zero-voltage-switch, described zero-voltage-switch is according to the relative pressure closed and disconnected in electric pressure cooking saucepan;
Pressure transducer, described pressure transducer detects the first absolute pressure value in described electric pressure cooking saucepan when described zero-voltage-switch disconnects, described pressure transducer detects the second absolute pressure value in described electric pressure cooking saucepan when described zero-voltage-switch closes;
Controller, described controller is connected with pressure transducer respectively with described zero-voltage-switch, and described controller obtains the relative pressure in described electric pressure cooking saucepan according to described first absolute pressure value and the second absolute pressure value.
2. the pressure-detecting device of electric pressure cooking saucepan as claimed in claim 1, is characterized in that,
When described zero-voltage-switch disconnects, the relative pressure in described electric pressure cooking saucepan is 0; And
When described zero-voltage-switch closes, the relative pressure in described electric pressure cooking saucepan is not 0.
3. the pressure-detecting device of electric pressure cooking saucepan as claimed in claim 1, it is characterized in that, the relative pressure in described electric pressure cooking saucepan is the difference of described second absolute pressure value and described first absolute pressure value.
4. the pressure-detecting device of electric pressure cooking saucepan as claimed in claim 3, it is characterized in that, described controller controls described electric pressure cooking saucepan according to the relative pressure in described electric pressure cooking saucepan.
5. the pressure-detecting device of electric pressure cooking saucepan as claimed in claim 1, it is characterized in that, described controller comprises the peripheral circuit of control chip and control chip, and wherein, the peripheral circuit of described control chip comprises:
First resistance, one end of described first resistance is connected with the output terminal of described pressure transducer, the other end ground connection of described first resistance;
First diode, described first diode and described first resistor coupled in parallel, the plus earth of described first diode, the negative electrode of described first diode is connected with one end of described first resistance;
Second diode, described second diode and described first Diode series, the anode of described second diode is connected with the negative electrode of described first diode, and the negative electrode of described second diode is connected with default power supply;
First electric capacity of series connection and the second resistance, one end ground connection of described first electric capacity, the other end of described first electric capacity is connected respectively with described control chip one end with described second resistance, and the other end of described second resistance is connected with one end of described first resistance.
6. an electric pressure cooking saucepan, is characterized in that, comprises the pressure-detecting device of the electric pressure cooking saucepan as described in any one of claim 1-5.
7. a pressure detection method for electric pressure cooking saucepan, is characterized in that, comprises the following steps:
Detect the on off state of zero-voltage-switch in electric pressure cooking saucepan;
When described zero-voltage-switch disconnects, detect the first absolute pressure value in described electric pressure cooking saucepan;
When described zero-voltage-switch closes, detect the second absolute pressure value in described electric pressure cooking saucepan; And
The relative pressure in described electric pressure cooking saucepan is obtained according to described first absolute pressure value and the second absolute pressure value.
8. the pressure detection method of electric pressure cooking saucepan as claimed in claim 7, is characterized in that,
When described zero-voltage-switch disconnects, the relative pressure in described electric pressure cooking saucepan is 0; And
When described zero-voltage-switch closes, the relative pressure in described electric pressure cooking saucepan is not 0.
9. the pressure detection method of electric pressure cooking saucepan as claimed in claim 7, it is characterized in that, the relative pressure in described electric pressure cooking saucepan is the difference of described second absolute pressure value and described first absolute pressure value.
10. the pressure detection method of electric pressure cooking saucepan as claimed in claim 9, is characterized in that, also comprise:
According to the relative pressure in described electric pressure cooking saucepan, described electric pressure cooking saucepan is controlled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310393020.5A CN104422556A (en) | 2013-09-02 | 2013-09-02 | Electric pressure cooker and pressure detecting device and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310393020.5A CN104422556A (en) | 2013-09-02 | 2013-09-02 | Electric pressure cooker and pressure detecting device and method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104422556A true CN104422556A (en) | 2015-03-18 |
Family
ID=52972192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310393020.5A Pending CN104422556A (en) | 2013-09-02 | 2013-09-02 | Electric pressure cooker and pressure detecting device and method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104422556A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108523644A (en) * | 2018-04-28 | 2018-09-14 | 佛山市顺德区美的电热电器制造有限公司 | The test method and device of pressure cooking appliance |
| CN109846344A (en) * | 2017-11-30 | 2019-06-07 | 佛山市顺德区美的电热电器制造有限公司 | A kind of compress control method, device and computer readable storage medium |
| CN110089931A (en) * | 2018-01-31 | 2019-08-06 | 佛山市顺德区美的电热电器制造有限公司 | Pressure cooking appliance and its control method |
| CN110613333A (en) * | 2018-06-20 | 2019-12-27 | 佛山市顺德区美的电热电器制造有限公司 | Heating control method and system of pressure cooking appliance and pressure cooking appliance |
| CN113384137A (en) * | 2020-03-11 | 2021-09-14 | 佛山市顺德区美的电热电器制造有限公司 | Control method and device of cooking equipment, cooking equipment and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009216396A (en) * | 2008-03-07 | 2009-09-24 | Mitomi Giken:Kk | Pneumatic pressure measuring method and instrument therefor |
| CN201578035U (en) * | 2009-11-26 | 2010-09-15 | 杭州老板电器股份有限公司 | Electric pressure cooker pressure detecting device capable of detecting pressure directly and accurately |
| CN102429574A (en) * | 2011-10-31 | 2012-05-02 | 九阳股份有限公司 | Electric pressure cooker capable of automatically controlling pressure and pressure control method thereof |
| CN203455128U (en) * | 2013-09-02 | 2014-02-26 | 美的集团股份有限公司 | Electric pressure cooker and pressure detection apparatus thereof |
-
2013
- 2013-09-02 CN CN201310393020.5A patent/CN104422556A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009216396A (en) * | 2008-03-07 | 2009-09-24 | Mitomi Giken:Kk | Pneumatic pressure measuring method and instrument therefor |
| CN201578035U (en) * | 2009-11-26 | 2010-09-15 | 杭州老板电器股份有限公司 | Electric pressure cooker pressure detecting device capable of detecting pressure directly and accurately |
| CN102429574A (en) * | 2011-10-31 | 2012-05-02 | 九阳股份有限公司 | Electric pressure cooker capable of automatically controlling pressure and pressure control method thereof |
| CN203455128U (en) * | 2013-09-02 | 2014-02-26 | 美的集团股份有限公司 | Electric pressure cooker and pressure detection apparatus thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109846344A (en) * | 2017-11-30 | 2019-06-07 | 佛山市顺德区美的电热电器制造有限公司 | A kind of compress control method, device and computer readable storage medium |
| CN110089931A (en) * | 2018-01-31 | 2019-08-06 | 佛山市顺德区美的电热电器制造有限公司 | Pressure cooking appliance and its control method |
| CN108523644A (en) * | 2018-04-28 | 2018-09-14 | 佛山市顺德区美的电热电器制造有限公司 | The test method and device of pressure cooking appliance |
| CN110613333A (en) * | 2018-06-20 | 2019-12-27 | 佛山市顺德区美的电热电器制造有限公司 | Heating control method and system of pressure cooking appliance and pressure cooking appliance |
| CN110613333B (en) * | 2018-06-20 | 2021-08-10 | 佛山市顺德区美的电热电器制造有限公司 | Heating control method and system of pressure cooking appliance and pressure cooking appliance |
| CN113384137A (en) * | 2020-03-11 | 2021-09-14 | 佛山市顺德区美的电热电器制造有限公司 | Control method and device of cooking equipment, cooking equipment and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104422556A (en) | Electric pressure cooker and pressure detecting device and method thereof | |
| CN102735365B (en) | Ambient temperature detection device and fault judgment method thereof | |
| CN104422562A (en) | Electric pressure cooker and failure detecting device and method thereof | |
| CN203455128U (en) | Electric pressure cooker and pressure detection apparatus thereof | |
| CN103836681A (en) | Cookware detection method for electromagnetic range and electromagnetic range | |
| CN105708303A (en) | Electric cooking apparatus, cooking method of electric cooking apparatus and method for detecting rice and water amounts in electric cooking apparatus | |
| CN105747828A (en) | Electric rice cooker and porridge cooking control method for electric rice cooker | |
| CN104835994A (en) | Electric vehicle, heating control method and heating control apparatus of power battery of the electric vehicle | |
| CN105078199A (en) | Electric cooker and electric cooker control method | |
| CN203897997U (en) | Electric cooker | |
| CN105490253A (en) | Electromagnetic heating system, over-temperature protection method and device for power device of electromagnetic heating system | |
| CN105520503A (en) | Pressure cooking utensil and control method thereof | |
| CN103397925A (en) | Vehicle and engine oil level detection device of vehicle | |
| CN104955187A (en) | Electromagnetic heating device as well as control assembly and control method thereof | |
| CN203455136U (en) | Electric pressure cooker and fault detection device thereof | |
| CN104061685A (en) | Water boiler and control method thereof | |
| CN104819500A (en) | Extractor hood as well as gas flow detection method, device and air speed control method | |
| CN203447082U (en) | Electric pressure cooker and control device thereof | |
| CN104244481B (en) | The method for heating and controlling of electromagnetic induction heater and electromagnetic induction heater | |
| CN107468191A (en) | Dish-washing machine water inlet detection method and dish-washing machine | |
| CN104414438A (en) | Electric pressure cooker and control device and method thereof | |
| CN204143276U (en) | Pressure cooking appliance and heating control apparatus thereof | |
| CN104110885B (en) | The control method of electric heater and electric heater | |
| CN104414439A (en) | Electric pressure cooker and control device and method thereof | |
| CN203447084U (en) | Electric pressure cooker and automatic cover overturning device thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150318 |
|
| RJ01 | Rejection of invention patent application after publication |