CN108919039A - A kind of three-pin plug, Three-hole socket detection device, method, system and equipment - Google Patents
A kind of three-pin plug, Three-hole socket detection device, method, system and equipment Download PDFInfo
- Publication number
- CN108919039A CN108919039A CN201810468095.8A CN201810468095A CN108919039A CN 108919039 A CN108919039 A CN 108919039A CN 201810468095 A CN201810468095 A CN 201810468095A CN 108919039 A CN108919039 A CN 108919039A
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- Prior art keywords
- hole socket
- hole
- detection unit
- detection
- display
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
- G01R31/68—Testing of releasable connections, e.g. of terminals mounted on a printed circuit board
- G01R31/69—Testing of releasable connections, e.g. of terminals mounted on a printed circuit board of terminals at the end of a cable or a wire harness; of plugs; of sockets, e.g. wall sockets or power sockets in appliances
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing Of Electrical Connectors (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Fire Alarms (AREA)
Abstract
This application discloses a kind of Three-hole socket detection devices, including first detection unit, second detection unit and third detection unit, wherein：First detection unit, second detection unit, third detection unit include concatenated resistance and display element；The first end of first detection unit and the first end of second detection unit are all connected with the first wiring pin of Three-hole socket detection device；The second end of first detection unit and the first end of third detection unit are all connected with the second wiring pin of Three-hole socket detection device；The second end of second detection unit and the second end of third detection unit are all connected with the third wiring pin of Three-hole socket detection device.The Three-hole socket detection device is connect with Three-hole socket to be detected, according to the display of display unit as a result, can determine whether to obtain Three-hole socket to be detected winding displacement whether failure, the installation circuit of Three-hole socket detection device is simple, and judgement is quickly and efficiently.The application accordingly also discloses three-pin plug, Three-hole socket detection method, system, equipment.
Description
Technical field
The present invention relates to electrotechnical apparatus technical field, in particular to a kind of three-pin plug, Three-hole socket detection device, side
Method, system and equipment.
Background technique
With social development and scientific and technological progress, people's living standard is continuously improved, and all kinds of electrical equipments enter daily life.
Requirement with people to life comfort is continuously improved, and electrical equipment uses electric work towards omnipotence, efficient development accordingly
Rate is continuously increased, thus electrical safety is more important.It is reported that China has about 8000 people dead because getting an electric shock every year.Ground wire lacks
It loses or poor contact, zero firewire does not hide some dangers for according to relevant regulations arrangement cabling etc. for Electrical Safety.
Attaching plug and socket are the electrotechnical apparatus most often contacted in people's daily life, wherein to be furnished with the three of earthing pole
Foot attaching plug is most commonly seen, and is chiefly used in large power-consuming equipment.If the Three-hole socket that three-pin power plug connects is asked
Topic, the electrical equipment may be damaged, or even generate security risk to user in electrical equipment use process.In this back
Under scape, how to be effectively detected inside Three-hole socket winding displacement whether failure, be that current those skilled in the art need what is solved to ask
Topic.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of three-pin plug, Three-hole socket detection device, methods, system
And equipment, so as to effectively detection Three-hole socket inside winding displacement whether failure.Its concrete scheme is as follows：
A kind of Three-hole socket detection device, including first detection unit, second detection unit and third detection unit,
In：
The first detection unit, the second detection unit, the third detection unit include concatenated resistance and
Display element；
The first end of the first end of the first detection unit and the second detection unit is all connected with the Three-hole socket
First wiring pin of detection device；
The first end of the second end of the first detection unit and the third detection unit is all connected with the Three-hole socket
Second wiring pin of detection device；
The second end of the second end of the second detection unit and the third detection unit is all connected with the Three-hole socket
The third wiring pin of detection device.
Preferably, the display element is：Unidirection luminous diode or bidirectional luminescence diode.
Correspondingly, the invention discloses a kind of three-pin plugs, including：
Three-hole socket detection device as described above.
Correspondingly, being applied to Three-hole socket as described above the invention also discloses a kind of Three-hole socket detection method and examining
It surveys in device, including：
The Three-hole socket detection device is accessed into Three-hole socket to be detected；
Obtain the display result of three display elements of the detection device；
The display is analyzed as a result, obtaining the testing result of the Three-hole socket.
Preferably, the process that the Three-hole socket detection device is accessed to Three-hole socket to be detected, specifically includes：
First wiring pin of the Three-hole socket detection device is accessed into the ground hole；
Second wiring pin of the Three-hole socket detection device is accessed into the firewire hole；
The third wiring pin of the Three-hole socket detection device is accessed into the null line hole.
Preferably, described to analyze the display as a result, obtaining the process of the testing result of the Three-hole socket, specifically wrap
It includes：
When the display result of three display elements is to go out, the Three-hole socket power supply to be detected is without electricity；
In three display elements, the display result for having any display element be it is bright, then described to be detected three
Spring hole scoket has electricity.
Preferably, described in three display elements, the display result for having any display element is bright, then institute
The process that Three-hole socket to be detected has electricity is stated, is specifically included：
When the display result of the display element of first detection unit, second detection unit, third detection unit be followed successively by it is bright,
It goes out, is bright, then testing result is that the Three-hole socket to be detected has electricity and winding displacement is normal；
Go out when the display result of the display element of first detection unit, second detection unit, third detection unit is followed successively by,
Bright, bright, then testing result is that the Three-hole socket to be detected has electricity and the null line hole misconnection firewire；
Go out when the display result of the display element of first detection unit, second detection unit, third detection unit is followed successively by,
It goes out, is bright, then testing result is that the Three-hole socket to be detected has electricity and the ground hole unearthed line.
Preferably, the normal winding displacement of the Three-hole socket to be detected is specially：
Firewire is inscribed as firewire hole in left hole, and zero curve is inscribed as null line hole in right hole, and interstitial hole is as the inscribed ground of ground string holes
Line.
Correspondingly, the invention also discloses a kind of Three-hole socket detection systems, including：
Wiring module, for the Three-hole socket detection device to be accessed Three-hole socket to be detected；
Obtain module, the display result of three display elements for obtaining the detection device；
Analysis module, for analyzing the display as a result, obtaining the testing result of the Three-hole socket.
Correspondingly, the invention also discloses a kind of Three-hole socket detection devices, including：
Three-hole socket detection device as described above；
Memory, for storing computer program；
Processor, realizing the Three-hole socket detection method as described in any one above when for executing the computer program
Step.
The invention discloses a kind of Three-hole socket detection devices, including first detection unit, second detection unit and third
Detection unit, wherein：The first detection unit, the second detection unit, the third detection unit include concatenated
Resistance and display element；The first end of the first end of the first detection unit and the second detection unit is all connected with described three
First wiring pin of spring hole scoket detection device；The first end of the second end of the first detection unit and the third detection unit
It is all connected with the second wiring pin of the Three-hole socket detection device；The second end of the second detection unit and third detection
The second end of unit is all connected with the third wiring pin of the Three-hole socket detection device.By the Three-hole socket detection device with it is to be checked
Three-hole socket connection is surveyed, the inside winding displacement of Three-hole socket is different, then the display result of display element is different, and user ties according to display
Fruit, that is, can determine whether to obtain Three-hole socket to be detected winding displacement whether failure, the installation circuit of Three-hole socket detection device is simple, sentences
Break quickly and efficiently.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of structural topology figure of Three-hole socket detection device in the embodiment of the present invention；
Fig. 2 is a kind of structural topology figure of specific Three-hole socket detection device in the embodiment of the present invention；
Fig. 3 a is a kind of specific schematic diagram of three-pin plug in the embodiment of the present invention；
Fig. 3 b is a kind of another specific schematic diagram of three-pin plug in the embodiment of the present invention；
Fig. 4 is a kind of step flow chart of Three-hole socket detection method in the embodiment of the present invention；
Fig. 5 is a kind of structure distribution figure of Three-hole socket detection system in the embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It is shown in Figure 1 the embodiment of the invention discloses a kind of Three-hole socket detection device, including first detection unit
11, second detection unit 12 and third detection unit 13, wherein：
The first detection unit 11, the second detection unit 12, the third detection unit 13 include concatenated
Resistance and display element；
It is understood that resistance is for concatenating current limliting.In each detection unit, in the first end and display of resistance
After the first end series connection of element, if the second end of the resistance corresponds to the first end of detection unit, display unit as it
Second end as its correspond to detection unit second end, if the second end of the resistance as its correspond to detection unit second
End, then the second end of display unit corresponds to the first end of detection unit as it.
More specifically, display unit here can be unidirection luminous diode or bidirectional luminescence diode.Fig. 2 is display
Unit is the Three-hole socket detection device of bidirectional luminescence diode.In addition, if display unit is unidirection luminous diode, here
Diode positive and negative anodes when line are not intended to limit, because wired power is alternating current, as long as in display unit access power path,
No matter the connection direction of unidirection luminous diode, which can shine.
The first end of the first detection unit 11 and the first end of the second detection unit 12 are all connected with three hole
First wiring pin a of socket detection device；
The first end of the second end of the first detection unit 11 and the third detection unit 13 is all connected with three hole
Second wiring pin b of socket detection device；
The second end of the second end of the second detection unit 12 and the third detection unit 13 is all connected with three hole
The third wiring pin c of socket detection device.
According to the obtained Three-hole socket detection device of design connection in the present embodiment, can when being connect with Three-hole socket,
By the displays of all display units as a result, quickly judge the Three-hole socket inside winding displacement whether failure, judging result is accurate
Effectively, the indiscoverable potential faults of Three-hole socket are eliminated.
The invention discloses a kind of Three-hole socket detection devices, including first detection unit, second detection unit and third
Detection unit, wherein：The first detection unit, the second detection unit, the third detection unit include concatenated
Resistance and display element；The first end of the first end of the first detection unit and the second detection unit is all connected with described three
First wiring pin of spring hole scoket detection device；The first end of the second end of the first detection unit and the third detection unit
It is all connected with the second wiring pin of the Three-hole socket detection device；The second end of the second detection unit and third detection
The second end of unit is all connected with the third wiring pin of the Three-hole socket detection device.By the Three-hole socket detection device with it is to be checked
Three-hole socket connection is surveyed, the inside winding displacement of Three-hole socket is different, then the display result of display element is different, and user ties according to display
Fruit, that is, can determine whether to obtain Three-hole socket to be detected winding displacement whether failure, the installation circuit of Three-hole socket detection device is simple, sentences
Break quickly and efficiently.
Correspondingly, the embodiment of the invention also discloses a kind of three-pin plugs, including：
Three-hole socket detection device as described in foregoing embodiments.
Referring to shown in Fig. 3 a and Fig. 3 b, wherein wiring pin a, b, c respectively corresponds Three-hole socket in above-described embodiment and detects
The first wiring pin a, the second wiring pin b, third the wiring pin c, LED1, LED2, LED3 of device respectively correspond three detection units
Display unit.
When the three-pin plug be inserted into Three-hole socket, Three-hole socket detection device can first determine whether Three-hole socket winding displacement whether
Failure, if the electrical equipment that can be connected the plant-grid connection three-pin plug of Three-hole socket thereby protects three-pin plug.
Correspondingly, being applied to three hole as described above the embodiment of the invention also discloses a kind of Three-hole socket detection method
It is shown in Figure 4 in socket detection device, including：
S1：The Three-hole socket detection device is accessed into Three-hole socket to be detected；
Wherein, step S1 can be specifically included：
First wiring pin of the Three-hole socket detection device is accessed into the ground hole；
Second wiring pin of the Three-hole socket detection device is accessed into the firewire hole；
The third wiring pin of the Three-hole socket detection device is accessed into the null line hole.
Certainly, reality is it can be seen that three wiring pins only have the difference of position, inner wire in Three-hole socket detection device
Road essence is identical, here only for convenience of following narration, therefore here to the jack of each wiring pin and Three-hole socket
Corresponding relationship dictates, but is not limited to a kind of this corresponding relationship, can also there is other prescriptive procedures.
In addition, the normal winding displacement of Three-hole socket is generally in the specification and execution standard of the architectural electricity installation of China：
Firewire is inscribed as firewire hole in left hole, and zero curve is inscribed as null line hole in right hole, and interstitial hole is as the inscribed ground of ground string holes
Line.
Certainly, it is carried out with the Three-hole socket detection method that the present embodiment also can be used in the Three-hole socket of other standards winding displacement
Winding displacement detection, as long as establishing the corresponding relationship between wiring pin and socket aperture.
S2：Obtain the display result of three display elements of the detection device；
Specifically, it shows that result is to shine or do not shine namely bright or go out；If it is intended to significantly more distinguishing each inspection
Unit is surveyed, different display colors can also be selected to three display elements, quickly to judge to show the corresponding detection of result
Unit.
S3：The display is analyzed as a result, obtaining the testing result of the Three-hole socket.
It is understood that the analysis display has as a result, obtaining the process of the testing result of the Three-hole socket
Body includes：
When the display result of three display elements is to go out, the Three-hole socket power supply to be detected is without electricity；
In three display elements, the display result for having any display element be it is bright, then described to be detected three
Spring hole scoket has electricity.
Further, described in three display elements, the display result for having any display element be it is bright, then
The Three-hole socket to be detected has the process of electricity, specifically includes：
When first detection unit 11, second detection unit 12, third detection unit 13 display element display result according to
It is secondary for it is bright, go out, be bright, then testing result be the Three-hole socket to be detected have electricity and winding displacement it is normal；
When first detection unit 11, second detection unit 12, third detection unit 133 display element display result according to
Secondary is to go out, is bright, is bright, then testing result is that the Three-hole socket to be detected has electricity and the null line hole misconnection firewire；
When first detection unit 11, second detection unit 12, third detection unit 13 display element display result according to
Secondary is to go out, go out, is bright, then testing result is that the Three-hole socket to be detected has electricity and the ground hole unearthed line.
Why obtain above-mentioned testing result, be because the power supply of Three-hole socket to be detected is provided by firewire, firewire with
When forming access between ground line, between firewire and zero curve, the display unit on access will shine.
The present embodiment is only referred to the biggish display result of several probabilities of occurrence, however it is not limited to these situations mentioned.In addition to
The above-mentioned display result and testing result listed, display result are also possible that other situations, and inferring to display result can
Other testing results can be obtained, such as zero curve missing or ground string holes misread firewire etc..
Correspondingly, the embodiment of the invention also discloses a kind of Three-hole socket detection system, it is shown in Figure 5, including：
Wiring module 21, for the Three-hole socket detection device to be accessed Three-hole socket to be detected；
Obtain module 22, the display result of three display elements for obtaining the detection device；
Analysis module 23, for analyzing the display as a result, obtaining the testing result of the Three-hole socket.
Correspondingly, the embodiment of the invention also discloses a kind of Three-hole socket detection devices, including：
Three-hole socket detection device as described in foregoing embodiments；
Memory, for storing computer program；
Processor, realizing the Three-hole socket detection method as described in foregoing embodiments when for executing the computer program
Step.
Detail in relation to Three-hole socket detection method in the present embodiment is referred to the description of above-described embodiment, herein
It repeats no more.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes that
A little elements, but also including other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
A kind of three-pin plug provided by the present invention, Three-hole socket detection device, method, system and equipment are carried out above
It is discussed in detail, used herein a specific example illustrates the principle and implementation of the invention, above embodiments
Explanation be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art,
According to the thought of the present invention, there will be changes in the specific implementation manner and application range, in conclusion in this specification
Appearance should not be construed as limiting the invention.
Claims (10)
1. a kind of Three-hole socket detection device, which is characterized in that detected including first detection unit, second detection unit and third
Unit, wherein：
The first detection unit, the second detection unit, the third detection unit include concatenated resistance and display
Element；
The first end of the first end of the first detection unit and the second detection unit is all connected with the Three-hole socket detection
First wiring pin of device；
The first end of the second end of the first detection unit and the third detection unit is all connected with the Three-hole socket detection
Second wiring pin of device；
The second end of the second end of the second detection unit and the third detection unit is all connected with the Three-hole socket detection
The third wiring pin of device.
2. Three-hole socket detection device according to claim 1, which is characterized in that the display element is：
Unidirection luminous diode or bidirectional luminescence diode.
3. a kind of three-pin plug, which is characterized in that including：
Three-hole socket detection device as claimed in claim 1 or 2.
4. a kind of Three-hole socket detection method, which is characterized in that be applied to Three-hole socket as claimed in claim 1 or 2 detection dress
In setting, including：
The Three-hole socket detection device is accessed into Three-hole socket to be detected；
Obtain the display result of three display elements of the detection device；
The display is analyzed as a result, obtaining the testing result of the Three-hole socket.
5. Three-hole socket detection method according to claim 4, which is characterized in that described by the Three-hole socket detection device
The process for accessing Three-hole socket to be detected, specifically includes：
First wiring pin of the Three-hole socket detection device is accessed into the ground hole；
Second wiring pin of the Three-hole socket detection device is accessed into the firewire hole；
The third wiring pin of the Three-hole socket detection device is accessed into the null line hole.
6. Three-hole socket detection method according to claim 5, which is characterized in that the analysis display is as a result, obtain
The process of the testing result of the Three-hole socket, specifically includes：
When the display result of three display elements is to go out, the Three-hole socket power supply to be detected is without electricity；
In three display elements, have any display element display result be it is bright, then three hole to be detected insert
Seat has electricity.
7. Three-hole socket detection method according to claim 6, which is characterized in that it is described to work as in three display elements,
Have any display element display result be it is bright, then the Three-hole socket to be detected have electricity process, specifically include：
When the display result of the display element of first detection unit, second detection unit, third detection unit be followed successively by it is bright, go out,
Bright, then testing result is that the Three-hole socket to be detected has electricity and winding displacement is normal；
Go out when the display result of the display element of first detection unit, second detection unit, third detection unit is followed successively by, is bright,
Bright, then testing result is that the Three-hole socket to be detected has electricity and the null line hole misconnection firewire；
Go out, go out when the display result of the display element of first detection unit, second detection unit, third detection unit is followed successively by,
Bright, then testing result is that the Three-hole socket to be detected has electricity and the ground hole unearthed line.
8. according to any one of claim 4 to the 7 Three-hole socket detection method, which is characterized in that insert in three hole to be detected
Seat normal winding displacement be specially：
Firewire is inscribed as firewire hole in left hole, and zero curve is inscribed as null line hole in right hole, and ground wire is inscribed as ground string holes in interstitial hole.
9. a kind of Three-hole socket detection system, which is characterized in that including：
Wiring module, for the Three-hole socket detection device to be accessed Three-hole socket to be detected；
Obtain module, the display result of three display elements for obtaining the detection device；
Analysis module, for analyzing the display as a result, obtaining the testing result of the Three-hole socket.
10. a kind of Three-hole socket detection device, which is characterized in that including：
Three-hole socket detection device as claimed in claim 1 or 2；
Memory, for storing computer program；
Processor realizes the Three-hole socket detection side as described in any one of claim 4 to 8 when for executing the computer program
The step of method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810468095.8A CN108919039A (en) | 2018-05-16 | 2018-05-16 | A kind of three-pin plug, Three-hole socket detection device, method, system and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810468095.8A CN108919039A (en) | 2018-05-16 | 2018-05-16 | A kind of three-pin plug, Three-hole socket detection device, method, system and equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108919039A true CN108919039A (en) | 2018-11-30 |
Family
ID=64403614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810468095.8A Pending CN108919039A (en) | 2018-05-16 | 2018-05-16 | A kind of three-pin plug, Three-hole socket detection device, method, system and equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108919039A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110297158A (en) * | 2019-06-25 | 2019-10-01 | 四川九洲线缆有限责任公司 | A kind of circuit effect method of three cores power-line plug line |
| CN110703154A (en) * | 2019-09-20 | 2020-01-17 | 东莞市华博精测仪表科技有限公司 | Socket test circuit and broadcast control method for socket test |
| CN113866523A (en) * | 2020-06-30 | 2021-12-31 | 芜湖美的厨卫电器制造有限公司 | Electrical phase detection device and method for household appliance and household appliance |
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| CN2438132Y (en) * | 2000-08-23 | 2001-07-04 | 王宗汶 | Three-hole socket wiring testing device |
| CN103296541A (en) * | 2013-05-16 | 2013-09-11 | 介国安 | Universal plug with null-line cutoff protection, ground connection and self-checking functions |
| CN204422694U (en) * | 2015-02-17 | 2015-06-24 | 金�雨 | A kind of New single-phase Three-hole socket testing circuit |
| CN205231395U (en) * | 2015-10-22 | 2016-05-11 | 深圳市同盛绿色科技有限公司 | Socket circuits structure |
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- 2018-05-16 CN CN201810468095.8A patent/CN108919039A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2438132Y (en) * | 2000-08-23 | 2001-07-04 | 王宗汶 | Three-hole socket wiring testing device |
| CN103296541A (en) * | 2013-05-16 | 2013-09-11 | 介国安 | Universal plug with null-line cutoff protection, ground connection and self-checking functions |
| CN204422694U (en) * | 2015-02-17 | 2015-06-24 | 金�雨 | A kind of New single-phase Three-hole socket testing circuit |
| CN205231395U (en) * | 2015-10-22 | 2016-05-11 | 深圳市同盛绿色科技有限公司 | Socket circuits structure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110297158A (en) * | 2019-06-25 | 2019-10-01 | 四川九洲线缆有限责任公司 | A kind of circuit effect method of three cores power-line plug line |
| CN110297158B (en) * | 2019-06-25 | 2021-11-09 | 四川九洲线缆有限责任公司 | Circuit verification method for three-core power line plug wire |
| CN110703154A (en) * | 2019-09-20 | 2020-01-17 | 东莞市华博精测仪表科技有限公司 | Socket test circuit and broadcast control method for socket test |
| CN113866523A (en) * | 2020-06-30 | 2021-12-31 | 芜湖美的厨卫电器制造有限公司 | Electrical phase detection device and method for household appliance and household appliance |
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