CN203561476U - Electric pressure cooker and pressure detection device thereof - Google Patents
Electric pressure cooker and pressure detection device thereof Download PDFInfo
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- CN203561476U CN203561476U CN201320631064.2U CN201320631064U CN203561476U CN 203561476 U CN203561476 U CN 203561476U CN 201320631064 U CN201320631064 U CN 201320631064U CN 203561476 U CN203561476 U CN 203561476U
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- 238000001514 detection method Methods 0.000 title claims abstract description 32
- 238000010411 cooking Methods 0.000 claims description 52
- 238000012360 testing method Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 239000000463 material Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 1
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Abstract
The utility model discloses a pressure detection device of an electric pressure cooker. The device comprises a pressure detection circuit that detects pressure in the electric pressure cooker; a temperature detection circuit that detects temperature in the electric pressure cooker; a memory used for storing compensation data, and an arithmetic unit, wherein the memory, the temperature detection circuit and the pressure detection circuit are integrated, the arithmetic unit is connected with the pressure detection circuit, the temperature detection circuit and the memory respectively, and the arithmetic unit compensates the detected pressure in the electric pressure cooker according to the detected temperature in the electric pressure cooker and compensation data to output a pressure signal. The pressure detection device of the electric pressure cooker integrates the temperature detection circuit and the memory to compensate the output pressure signal, thus an external correcting circuit is not needed, the size is small, the cost is low, a relatively accurate pressure signal cab be obtained, the production efficiency is improved, thereby satisfying the requirement for production and use of small household appliance products. The utility model also discloses an electric pressure cooker having the abovementioned pressure detection device.
Description
Technical field
The utility model relates to household electrical appliance technical field, particularly a kind of pressure-detecting device of electric pressure cooking saucepan and have the electric pressure cooking saucepan of this pressure-detecting device.
Background technology
The pressure transducer using on electric pressure cooking saucepan at present, its principle is mostly by the variation of strain gauge material, the voltage signal of connected circuit to be changed, then after voltage signal being amplified, obtain the electric signal that can be identified by main arithmetic system, thereby can obtain the variation of electric pressure cooking saucepan internal pressure.But strain gauge material coefficient of strain under different temperatures can change, this just causes the output accuracy of strain gauge material under different temperatures also can change, the temperature drift phenomenon of namely often saying.While using on electric pressure cooking saucepan, the tested object of pressure transducer is high-temperature steam, this to pressure transducer the accuracy requirement under hot conditions very high.
The main method that solves temperature drift problem in prior art has: the one, and the temperature of the cooling measurand of trying one's best before pressure test, but while adopting the method, the accuracy of detection of pressure transducer reduces greatly, poor reliability; The 2nd, to the additional temperature-compensation circuit of system, still, adopt pressure transducer bulky of the method, cost is high.Therefore, the method for existing solution temperature drift problem is not suitable for using on electric pressure cooking saucepan.
Utility model content
The purpose of this utility model is intended to solve at least to a certain extent above-mentioned technological deficiency.
For this reason, an object of the present utility model is to propose a kind of pressure-detecting device of electric pressure cooking saucepan, by integrated temperature testing circuit and storer in this pressure-detecting device so that output pressure signal is compensated, thereby do not need external correcting circuit, volume is little, cost is low, and can obtain more accurate pressure signal, has improved production efficiency.
Another object of the present utility model is to propose a kind of electric pressure cooking saucepan.
For achieving the above object, the utility model proposes a kind of pressure-detecting device of electric pressure cooking saucepan on the one hand, comprising: the pressure detection circuit that detects electric pressure cooking saucepan internal pressure; Detect the temperature sensing circuit of described Voltage force kettle temperature; For storing the storer of offset data, described storer and described temperature sensing circuit and the integrated setting of described pressure detection circuit; Arithmetical unit, described arithmetical unit is connected respectively with described pressure detection circuit, described temperature sensing circuit and described storer, and described arithmetical unit compensates with output pressure signal the described electric pressure cooking saucepan internal pressure detecting according to the described Voltage force kettle temperature detecting and described offset data.
According to the pressure-detecting device of the electric pressure cooking saucepan the utility model proposes, by pressure detection circuit, detect the pressure in electric pressure cooking saucepan, temperature sensing circuit detects the temperature in electric pressure cooking saucepan, and offset data is stored in storer, arithmetical unit compensates with output pressure signal the electric pressure cooking saucepan internal pressure detecting according to the Voltage force kettle temperature detecting and offset data, therefore, in pressure-detecting device of the present utility model, integrated temperature sensing circuit and storer are to compensate output pressure signal, thereby do not need external correcting circuit, volume is little, cost is low, and can obtain more accurate pressure signal, improved production efficiency, meet production and the user demand of small household appliances series products.
Preferably, the pressure-detecting device of described electric pressure cooking saucepan, also comprises A/D convertor circuit, and described A/D convertor circuit connects between described pressure detection circuit and described arithmetical unit, and described A/D convertor circuit connects between described temperature sensing circuit and described arithmetical unit.
Preferably, the pressure-detecting device of described electric pressure cooking saucepan, also comprises amplifying circuit, and described amplifying circuit is connected between described pressure detection circuit and described AD testing circuit.
Particularly, described offset data can be pressure data, or can be the enlargement factor of described amplifying circuit, or can be the enlargement factor of pressure data and described amplifying circuit.
Further, the pressure-detecting device of described electric pressure cooking saucepan, also comprises the output terminal for exporting described pressure signal.
For achieving the above object, the utility model proposes a kind of electric pressure cooking saucepan on the other hand, comprises the pressure-detecting device of above-mentioned electric pressure cooking saucepan.
According to the electric pressure cooking saucepan the utility model proposes, by integrated temperature testing circuit and storer in pressure-detecting device so that output pressure signal is compensated, make pressure-detecting device not need external correcting circuit, reduced cost, and can obtain more accurate pressure signal, improve production efficiency, met production and the user demand of small household appliances series products.
The aspect that the utility model is additional and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
Accompanying drawing explanation
The utility model above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments obviously and easily and understand, wherein:
Fig. 1 is according to the block diagram of the pressure-detecting device of the electric pressure cooking saucepan of the utility model embodiment;
Fig. 2 is according to the block diagram of the pressure-detecting device of the electric pressure cooking saucepan of a preferred embodiment of the utility model; And
Fig. 3 is according to the block diagram of the electric pressure cooking saucepan of the utility model embodiment.
Reference numeral:
Pressure detection circuit 10, temperature sensing circuit 20, storer 30, arithmetical unit 40, A/D convertor circuit 50, amplifying circuit 60 and output terminal VOUT.
Embodiment
Describe embodiment of the present utility model below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment being described with reference to the drawings, be exemplary, only for explaining the utility model, and can not be interpreted as restriction of the present utility model.
Disclosing below provides many different embodiment or example to be used for realizing different structure of the present utility model.Of the present utility model open in order to simplify, hereinafter the parts to specific examples and setting are described.Certainly, they are only example, and object does not lie in restriction the utility model.In addition, the utility model can be in different examples repeat reference numerals and/or letter.This repetition is in order to simplify and object clearly, itself do not indicate the relation between discussed various embodiment and/or setting.In addition, the various specific technique that the utility model provides and the example of material, but those of ordinary skills can recognize the property of can be applicable to of other techniques and/or the use of other materials.In addition, First Characteristic described below Second Characteristic it " on " structure can comprise that the first and second Characteristics creations are the direct embodiment of contact, also can comprise the embodiment of other Characteristics creation between the first and second features, such the first and second features may not be direct contacts.
In description of the present utility model, it should be noted that, unless otherwise prescribed and limit, term " installation ", " being connected ", " connection " should be interpreted broadly, for example, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be to be directly connected, and also can indirectly be connected by intermediary, for the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term.
With reference to description and accompanying drawing below, by these and other aspects of clear embodiment of the present utility model.In these descriptions and accompanying drawing, specifically disclose some specific implementations in embodiment of the present utility model, represent some modes of the principle of implementing embodiment of the present utility model, but should be appreciated that the scope of embodiment of the present utility model is not limited.On the contrary, embodiment of the present utility model comprises all changes, modification and the equivalent within the scope of spirit and the intension that falls into additional claims.
Describe with reference to the accompanying drawings the pressure-detecting device of the electric pressure cooking saucepan proposing according to the utility model embodiment and there is the electric pressure cooking saucepan of this pressure-detecting device.
Fig. 1 is according to the block diagram of the pressure-detecting device of the electric pressure cooking saucepan of the utility model embodiment.As shown in Figure 1, the pressure-detecting device of this electric pressure cooking saucepan comprises: pressure detection circuit 10, temperature sensing circuit 20, storer 30 and arithmetical unit 40.Wherein, pressure detection circuit 10 detects the pressure in electric pressure cooking saucepan; Temperature sensing circuit 20 detects the temperature in electric pressure cooking saucepan; Storer 30 is for storing offset data; And, storer 30 and temperature sensing circuit 20 and the integrated setting of pressure detection circuit 10.Arithmetical unit 40 is connected respectively with pressure detection circuit 10, temperature sensing circuit 20 and storer 30, and arithmetical unit 40 compensates with output pressure signal the electric pressure cooking saucepan internal pressure detecting according to the Voltage force kettle temperature detecting and offset data.
In a preferred embodiment of the present utility model, as shown in Figure 2, the pressure-detecting device of above-mentioned electric pressure cooking saucepan also comprises A/D convertor circuit 50.Wherein, between A/D convertor circuit 50 Bonding pressure testing circuits 10 and arithmetical unit 40, and A/D convertor circuit 50 connects between temperature sensing circuit 20 and arithmetical unit 40.
Preferably, as shown in Figure 2, the pressure-detecting device of above-mentioned electric pressure cooking saucepan also comprises amplifying circuit 60.Wherein, amplifying circuit 60 is connected between pressure detection circuit 10 and AD testing circuit 50.
Further, as shown in Figure 2, the pressure-detecting device of above-mentioned electric pressure cooking saucepan also comprises the output terminal VOUT for output pressure signal.
In a specific embodiment of the present utility model, can obtain in accordance with the following methods penalty coefficient.Under same normal pressure environment, read the output pressure numerical value of pressure-detecting device under condition of different temperatures, compare and draw difference with normal pressure, can obtain the penalty coefficient of output pressure under different temperatures, penalty coefficient write store 30, arithmetical unit 40 can compensate output signal according to temperature and penalty coefficient again.Wherein, offset data can be pressure data, or can be the enlargement factor of amplifying circuit, or can be the enlargement factor of pressure data and amplifying circuit.
In the utility model embodiment, on the basis of pressure detection circuit 10, increased temperature sensing circuit 20, pressure detection circuit 10 is after amplifying circuit 60, be connected with A/D convertor circuit 50, temperature sensing circuit 20 is connected with A/D convertor circuit 50, after AD conversion, arithmetical unit 40 obtains the pressure and temperature data of measurand, and the penalty coefficient of storing according to storer 30 compensates output pressure signal.
According to the pressure-detecting device of the electric pressure cooking saucepan the utility model proposes, by pressure detection circuit, detect the pressure in electric pressure cooking saucepan, temperature sensing circuit detects the temperature in electric pressure cooking saucepan, and offset data is stored in storer, arithmetical unit compensates with output pressure signal the electric pressure cooking saucepan internal pressure detecting according to the Voltage force kettle temperature detecting and offset data, therefore, in pressure-detecting device of the present utility model, integrated temperature sensing circuit and storer are to compensate output pressure signal, thereby do not need external correcting circuit, volume is little, cost is low, and can obtain more accurate pressure signal, improved production efficiency, meet production and the user demand of small household appliances series products.
Fig. 3 is according to the block diagram of the electric pressure cooking saucepan of the utility model embodiment.As shown in Figure 3, this electric pressure cooking saucepan 301 comprises the pressure-detecting device 302 of above-mentioned electric pressure cooking saucepan.
According to the electric pressure cooking saucepan the utility model proposes, by integrated temperature testing circuit and storer in pressure-detecting device so that output pressure signal is compensated, make pressure-detecting device not need external correcting circuit, reduced cost, and can obtain more accurate pressure signal, improve production efficiency, met production and the user demand of small household appliances series products.
In the description of this instructions, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiment or example.
Although illustrated and described embodiment of the present utility model, for the ordinary skill in the art, be appreciated that in the situation that not departing from principle of the present utility model and spirit and can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present utility model is by claims and be equal to and limit.
Claims (6)
1. a pressure-detecting device for electric pressure cooking saucepan, is characterized in that, comprising:
Detect the pressure detection circuit of electric pressure cooking saucepan internal pressure;
Detect the temperature sensing circuit of described Voltage force kettle temperature;
For storing the storer of offset data, described storer and described temperature sensing circuit and the integrated setting of described pressure detection circuit;
Arithmetical unit, described arithmetical unit is connected respectively with described pressure detection circuit, described temperature sensing circuit and described storer, and described arithmetical unit compensates with output pressure signal the described electric pressure cooking saucepan internal pressure detecting according to the described Voltage force kettle temperature detecting and described offset data.
2. the pressure-detecting device of electric pressure cooking saucepan as claimed in claim 1, it is characterized in that, also comprise A/D convertor circuit, described A/D convertor circuit connects between described pressure detection circuit and described arithmetical unit, and described A/D convertor circuit connects between described temperature sensing circuit and described arithmetical unit.
3. the pressure-detecting device of electric pressure cooking saucepan as claimed in claim 2, is characterized in that, also comprises amplifying circuit, and described amplifying circuit is connected between described pressure detection circuit and described AD testing circuit.
4. the pressure-detecting device of electric pressure cooking saucepan as claimed in claim 3, is characterized in that, described offset data is pressure data, or is the enlargement factor of described amplifying circuit, or is the enlargement factor of pressure data and described amplifying circuit.
5. the pressure-detecting device of electric pressure cooking saucepan as claimed in claim 1, is characterized in that, also comprises the output terminal for exporting described pressure signal.
6. an electric pressure cooking saucepan, is characterized in that, comprises the pressure-detecting device of the electric pressure cooking saucepan as described in claim 1-5 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320631064.2U CN203561476U (en) | 2013-10-12 | 2013-10-12 | Electric pressure cooker and pressure detection device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320631064.2U CN203561476U (en) | 2013-10-12 | 2013-10-12 | Electric pressure cooker and pressure detection device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203561476U true CN203561476U (en) | 2014-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320631064.2U Expired - Lifetime CN203561476U (en) | 2013-10-12 | 2013-10-12 | Electric pressure cooker and pressure detection device thereof |
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| Country | Link |
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| CN (1) | CN203561476U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108716957A (en) * | 2018-06-21 | 2018-10-30 | 迈格仪表(成都)有限公司 | A kind of characterization buckling diaphragm capsule |
| CN109459181A (en) * | 2018-10-12 | 2019-03-12 | 惠州市铂蓝德科技有限公司 | Pressure cooker sensor and its fault self-detection method |
-
2013
- 2013-10-12 CN CN201320631064.2U patent/CN203561476U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108716957A (en) * | 2018-06-21 | 2018-10-30 | 迈格仪表(成都)有限公司 | A kind of characterization buckling diaphragm capsule |
| CN109459181A (en) * | 2018-10-12 | 2019-03-12 | 惠州市铂蓝德科技有限公司 | Pressure cooker sensor and its fault self-detection method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140423 |