CN106676830B - Door lock state detection method, system and the washing machine of washing machine - Google Patents
Door lock state detection method, system and the washing machine of washing machine Download PDFInfo
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- CN106676830B CN106676830B CN201510766324.0A CN201510766324A CN106676830B CN 106676830 B CN106676830 B CN 106676830B CN 201510766324 A CN201510766324 A CN 201510766324A CN 106676830 B CN106676830 B CN 106676830B
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- door lock
- duty ratio
- power supply
- signal duty
- washing machine
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/42—Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door
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- D06F2224/00—
Abstract
The invention discloses door lock state detection method, system and the washing machines of a kind of washing machine, wherein, method includes the following steps: in scheduled detection time, multiple door lock signals and multiple power supply signals are read with predetermined time interval, wherein, predetermined time interval is less than scheduled detection time；Door lock signal duty ratio is obtained according to multiple door lock signals, obtains power supply signal duty ratio according to multiple power supply signals；Current door lock state is judged according to door lock signal duty ratio and power supply signal duty ratio, wherein door lock state includes open state and closed state.The door lock state detection method of washing machine according to an embodiment of the present invention can be improved the accuracy of door lock state detection.
Description
Technical field
The present invention relates to field of home appliance technology, in particular to door lock state detection method, the system of a kind of washing machine
And washing machine.
Background technique
In roller washing machine, many control logics are directed to door lock state.For example, some washing machines can be in door lock
Control washing machine stops dehydration when state is open state；When door lock state is in off state, it is pre- to press pause button
If allowing door lock state to be changed to open state after the time.Therefore, the door lock state detection of washing machine is particularly important.
Currently, the detection for door of washing machine lock status is only realized by the detection to door lock signal mostly.Generally,
When door lock is opened, no voltage at door lock signal detection, when door lock is closed, door lock signal detection will appear voltage.Therefore,
It can judge that door lock state is in off state when door lock signal is high voltage signal, otherwise, judge door lock state for opening state
State.
However, washing machine uses in a humid environment mostly, the shell of grounded parts such as heating tube and motor it is exhausted
Edge state can decline, can between the shell of grounded parts and the firewire of circuit board when the firewire of household electricity and zero curve reversal connection
Electromotive force can be generated, the electromotive force is smaller compared with alternating current, and when alternating current is 220V, which is generally 120V or so, therefore can
It is called empty electricity.It is influenced by empty electricity, even if being also possible to occur at door lock signal detection when door lock state is open state
High voltage signal.There is mistake in this detection that will lead to door lock state.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
Purpose is to propose a kind of door lock state detection method of washing machine, can be improved the accuracy of door lock state detection.
Second object of the present invention is to propose a kind of door lock state detection system of washing machine.
Third object of the present invention is to propose a kind of washing machine.
The door lock state detection method of the washing machine of embodiment according to a first aspect of the present invention, comprising the following steps: pre-
In fixed detection time, multiple door lock signals and multiple power supply signals are read with predetermined time interval, wherein the predetermined time
Interval is less than the scheduled detection time；Door lock signal duty ratio is obtained according to the multiple door lock signal, according to described more
A power supply signal obtains power supply signal duty ratio；Worked as according to the door lock signal duty ratio and power supply signal duty ratio judgement
Preceding door lock state, wherein the door lock state includes open state and closed state.
The door lock state detection method of washing machine according to an embodiment of the present invention, by the duty for obtaining multiple door lock signals
Judge than the duty ratio with multiple power supply signals, and according to the duty ratio of multiple door lock signals and the duty ratio of multiple power supply signals
Current door lock state, thereby, it is possible to effectively avoid mistakenly judging door lock state because of the influence of empty electricity, to improve door
The accuracy of lock status detection.
In addition, the door lock state detection method of washing machine according to the above embodiment of the present invention can also have following add
Technical characteristic:
According to one embodiment of present invention, described that door lock signal duty ratio, root are obtained according to the multiple door lock signal
Power supply signal duty ratio is obtained according to the multiple power supply signal, further comprises: being judged respectively every in the multiple door lock signal
The level value of each power supply signal in a door lock signal and the multiple power supply signal；According to each in the multiple door lock signal
The level value of door lock signal calculates the door lock signal duty ratio, and according to power supply signal each in the multiple power supply signal
Level value calculates the power supply signal duty ratio.
According to one embodiment of present invention, described according to the door lock signal duty ratio and the power supply signal duty ratio
Judge current door lock state, further comprise: the door lock signal duty ratio and the power supply signal duty ratio；If
The absolute value of the difference of the power supply signal duty ratio and the door lock signal duty ratio is greater than predetermined difference value, then determines the door lock
State is open state；If the absolute value of the difference of the power supply signal duty ratio and the door lock signal duty ratio is less than or waits
In predetermined difference value, then determine that the door lock state is in off state.
According to one embodiment of present invention, the scheduled detection time is 100 milliseconds, and the predetermined time interval is
10 milliseconds.
The door lock state detection system of the washing machine of embodiment according to a second aspect of the present invention, comprising: detection module is used for
In scheduled detection time, multiple door lock signals and multiple power supply signals are read with predetermined time interval, wherein described predetermined
Time interval is less than the scheduled detection time；Module is obtained, for obtaining door lock signal according to the multiple door lock signal
Duty ratio obtains power supply signal duty ratio according to the multiple power supply signal；Judgment module, for being accounted for according to the door lock signal
Sky is than judging current door lock state with the power supply signal duty ratio, wherein the door lock state includes open state and pass
Closed state.
The door lock state detection system of washing machine according to an embodiment of the present invention, by the duty for obtaining multiple door lock signals
Judge than the duty ratio with multiple power supply signals, and according to the duty ratio of multiple door lock signals and the duty ratio of multiple power supply signals
Current door lock state, thereby, it is possible to effectively avoid mistakenly judging door lock state because of the influence of empty electricity, to improve door
The accuracy of lock status detection.
In addition, the door lock state detection system of washing machine according to the above embodiment of the present invention can also have following add
Technical characteristic:
According to one embodiment of present invention, the acquisition module is used for: being judged respectively every in the multiple door lock signal
The level value of each power supply signal in a door lock signal and the multiple power supply signal；According to each in the multiple door lock signal
The level value of door lock signal calculates the door lock signal duty ratio, and according to power supply signal each in the multiple power supply signal
Level value calculates the power supply signal duty ratio.
According to one embodiment of present invention, the judgment module is used for: the door lock signal duty ratio and described
Power supply signal duty ratio；If the absolute value of the difference of the power supply signal duty ratio and the door lock signal duty ratio is greater than predetermined
Difference then determines the door lock state for open state；If the power supply signal duty ratio and the door lock signal duty ratio
Absolute value of the difference be less than or equal to predetermined difference value, then determine that the door lock state is in off state.
According to one embodiment of present invention, the scheduled detection time is 100 milliseconds, and the predetermined time interval is
10 milliseconds.
The washing machine of embodiment according to a third aspect of the present invention, the washing machine including embodiment according to a second aspect of the present invention
Door lock state detection system.
Washing machine according to an embodiment of the present invention, by obtain multiple door lock signals duty ratio and multiple power supply signals
Duty ratio, and current door lock state is judged according to the duty ratio of the duty ratio of multiple door lock signals and multiple power supply signals, by
This, can effectively be avoided mistakenly judging door lock state because of the influence of empty electricity, to improve the accurate of door lock state detection
Property
Detailed description of the invention
Fig. 1 is the flow chart according to the door lock state detection method of the washing machine of one embodiment of the invention；
Fig. 2 is the schematic diagram according to the door lock state detection circuit of the washing machine of one embodiment of the invention；
Fig. 3 is the structural block diagram according to the door lock state detection system of the washing machine of one embodiment of the invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
Door lock state detection method, system and the washing machine of the washing machine of the embodiment of the present invention are described with reference to the accompanying drawing.
Fig. 1 is the flow chart according to the door lock state detection method of the washing machine of one embodiment of the invention.
In an embodiment of the present invention, washing machine is preferably roller washing machine.
As shown in Figure 1, the door lock state detection method of the washing machine of the embodiment of the present invention, comprising the following steps:
S101 reads multiple door lock signals and multiple power supply signals in scheduled detection time with predetermined time interval,
Wherein, predetermined time interval is less than scheduled detection time.
In one embodiment of the invention, can be detected respectively by the Test terminal of circuit shown in Fig. 2 door lock signal and
Power supply signal.In one embodiment of the invention, scheduled detection time can be 100 milliseconds, and predetermined time interval can be 10
Millisecond.Thereby, it is possible to read 10 door lock signals and 10 power supply signals.
S102, obtains door lock signal duty ratio according to multiple door lock signals, obtains power supply signal according to multiple power supply signals
Duty ratio.
Specifically, each power supply letter in each door lock signal and multiple power supply signals can be judged in multiple door lock signals respectively
Number level value, door lock signal duty ratio, and root are then calculated according to the level value of door lock signal each in multiple door lock signals
Power supply signal duty ratio is calculated according to the level value of each power supply signal in multiple power supply signals.
S103 judges current door lock state according to door lock signal duty ratio and power supply signal duty ratio, wherein door lock shape
State includes open state and closed state.
It should be appreciated that power supply signal is metastable, therefore its duty ratio is relatively stable.It and is to close in door lock state
When state, door lock signal may occur in which more high level signal, therefore the difference of door lock signal duty ratio and power supply signal duty ratio
It is worth smaller；When door lock state is open state, generally, there is not high level signal in door lock signal, duty ratio 0, i.e.,
Make empty electricity occur, door lock signal duty ratio is also smaller, therefore door lock signal duty ratio and the difference of power supply signal duty ratio are larger.
Therefore, in one embodiment of the invention, it may compare door lock signal duty ratio and power supply signal duty ratio, if
The absolute value of the difference of power supply signal duty ratio and door lock signal duty ratio is greater than predetermined difference value, then determines door lock state for opening state
State；If the absolute value of the difference of power supply signal duty ratio and door lock signal duty ratio is less than or equal to predetermined difference value, decision gate
Lock status is in off state.Wherein, predetermined difference value can be set according to power standard and the physical circuit of generation door lock signal,
This is not limited to specific value.
The door lock state detection method of washing machine according to an embodiment of the present invention, by the duty for obtaining multiple door lock signals
Judge than the duty ratio with multiple power supply signals, and according to the duty ratio of multiple door lock signals and the duty ratio of multiple power supply signals
Current door lock state, thereby, it is possible to effectively avoid mistakenly judging door lock state because of the influence of empty electricity, to improve door
The accuracy of lock status detection.
To realize above-described embodiment, the present invention also proposes a kind of door lock state detection system of washing machine.
Fig. 3 is the structural block diagram according to the door lock state detection system of the washing machine of one embodiment of the invention.
As shown in figure 3, the door lock state detection system of the washing machine of the embodiment of the present invention, comprising: detection module 10 obtains
Module 20 and judgment module 30.
Wherein, detection module 10 is used in scheduled detection time, reads multiple door lock signals with predetermined time interval
With multiple power supply signals, wherein predetermined time interval is less than scheduled detection time.
In one embodiment of the invention, can be detected respectively by the Test terminal of circuit shown in Fig. 2 door lock signal and
Power supply signal.In one embodiment of the invention, scheduled detection time can be 100 milliseconds, and predetermined time interval can be 10
Millisecond.Thereby, it is possible to read 10 door lock signals and 10 power supply signals.
It obtains module 20 to be used to obtain door lock signal duty ratio according to multiple door lock signals, be obtained according to multiple power supply signals
Power supply signal duty ratio.
Specifically, obtaining module 20 can judge in multiple door lock signals respectively in each door lock signal and multiple power supply signals
Then the level value of each power supply signal calculates door lock signal according to the level value of door lock signal each in multiple door lock signals and accounts for
Empty ratio, and power supply signal duty ratio is calculated according to the level value of power supply signal each in multiple power supply signals.
Judgment module 30 is used to according to door lock signal duty ratio and power supply signal duty ratio judge current door lock state,
In, door lock state includes open state and closed state.
It should be appreciated that power supply signal is metastable, therefore its duty ratio is relatively stable.It and is to close in door lock state
When state, door lock signal may occur in which more high level signal, therefore the difference of door lock signal duty ratio and power supply signal duty ratio
It is worth smaller；When door lock state is open state, generally, there is not high level signal in door lock signal, duty ratio 0, i.e.,
Make empty electricity occur, door lock signal duty ratio is also smaller, therefore door lock signal duty ratio and the difference of power supply signal duty ratio are larger.
Therefore, in one embodiment of the invention, judgment module 30 may compare door lock signal duty ratio and power supply signal
Duty ratio determines door lock if the absolute value of the difference of power supply signal duty ratio and door lock signal duty ratio is greater than predetermined difference value
State is open state；If the absolute value of the difference of power supply signal duty ratio and door lock signal duty ratio is less than or equal to predetermined poor
Value, then determine that door lock state is in off state.Wherein, predetermined difference value can be according to the specific electricity of power standard and generation door lock signal
Road and set, be not limited to specific value herein.
The door lock state detection system of washing machine according to an embodiment of the present invention, by the duty for obtaining multiple door lock signals
Judge than the duty ratio with multiple power supply signals, and according to the duty ratio of multiple door lock signals and the duty ratio of multiple power supply signals
Current door lock state, thereby, it is possible to effectively avoid mistakenly judging door lock state because of the influence of empty electricity, to improve door
The accuracy of lock status detection.
Corresponding above-described embodiment, the present invention also propose a kind of washing machine.
Wherein, the washing machine of the embodiment of the present invention can be roller washing machine.
The washing machine of the embodiment of the present invention, the door lock state detection system of the washing machine including the above embodiment of the present invention.
Its specific embodiment can refer to above-described embodiment, and details are not described herein.
Washing machine according to an embodiment of the present invention, by obtain multiple door lock signals duty ratio and multiple power supply signals
Duty ratio, and current door lock state is judged according to the duty ratio of the duty ratio of multiple door lock signals and multiple power supply signals, by
This, can effectively be avoided mistakenly judging door lock state because of the influence of empty electricity, to improve the accurate of door lock state detection
Property.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (8)
1. a kind of door lock state detection method of washing machine, which comprises the following steps:
In scheduled detection time, multiple door lock signals and multiple power supply signals are read with predetermined time interval, wherein described
Predetermined time interval is less than the scheduled detection time；
Door lock signal duty ratio is obtained according to the multiple door lock signal, power supply signal is obtained according to the multiple power supply signal and is accounted for
Empty ratio；
Current door lock state is judged according to the door lock signal duty ratio and the power supply signal duty ratio, wherein the door
Lock status includes open state and closed state；
It is described that current door lock state is judged according to the door lock signal duty ratio and the power supply signal duty ratio, further wrap
It includes:
Compare the door lock signal duty ratio and the power supply signal duty ratio；
If the absolute value of the difference of the power supply signal duty ratio and the door lock signal duty ratio is greater than predetermined difference value, determine
The door lock state is open state；
If the absolute value of the difference of the power supply signal duty ratio and the door lock signal duty ratio is less than or equal to predetermined difference value,
Then determine that the door lock state is in off state.
2. the door lock state detection method of washing machine according to claim 1, which is characterized in that described according to the multiple
Door lock signal obtains door lock signal duty ratio, obtains power supply signal duty ratio according to the multiple power supply signal, further comprises:
Each power supply signal in each door lock signal and the multiple power supply signal is judged in the multiple door lock signal respectively
Level value；
The door lock signal duty ratio is calculated according to the level value of door lock signal each in the multiple door lock signal, and according to institute
The level value for stating each power supply signal in multiple power supply signals calculates the power supply signal duty ratio.
3. the door lock state detection method of washing machine according to claim 1 or 2, which is characterized in that the scheduled inspection
Surveying the time is 100 milliseconds, and the predetermined time interval is 10 milliseconds.
4. a kind of door lock state detection system of washing machine characterized by comprising
Detection module, for reading multiple door lock signals and multiple power supplys with predetermined time interval in scheduled detection time
Signal, wherein the predetermined time interval is less than the scheduled detection time；
Module is obtained, for obtaining door lock signal duty ratio according to the multiple door lock signal, according to the multiple power supply signal
Obtain power supply signal duty ratio；
Judgment module, for judging current door lock shape according to the door lock signal duty ratio and the power supply signal duty ratio
State, wherein the door lock state includes open state and closed state；
The judgment module is used for:
Compare the door lock signal duty ratio and the power supply signal duty ratio；
If the absolute value of the difference of the power supply signal duty ratio and the door lock signal duty ratio is greater than predetermined difference value, determine
The door lock state is open state；
If the absolute value of the difference of the power supply signal duty ratio and the door lock signal duty ratio is less than or equal to predetermined difference value,
Then determine that the door lock state is in off state.
5. the door lock state detection system of washing machine according to claim 4, which is characterized in that the acquisition module is used
In:
Each power supply signal in each door lock signal and the multiple power supply signal is judged in the multiple door lock signal respectively
Level value；
The door lock signal duty ratio is calculated according to the level value of door lock signal each in the multiple door lock signal, and according to institute
The level value for stating each power supply signal in multiple power supply signals calculates the power supply signal duty ratio.
6. the door lock state detection system of washing machine according to claim 4 or 5, which is characterized in that the scheduled inspection
Surveying the time is 100 milliseconds, and the predetermined time interval is 10 milliseconds.
7. a kind of washing machine characterized by comprising according to the door lock state of the described in any item washing machines of claim 4-6
Detection system.
8. washing machine according to claim 7, which is characterized in that the washing machine is roller washing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510766324.0A CN106676830B (en) | 2015-11-11 | 2015-11-11 | Door lock state detection method, system and the washing machine of washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510766324.0A CN106676830B (en) | 2015-11-11 | 2015-11-11 | Door lock state detection method, system and the washing machine of washing machine |
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| CN106676830B true CN106676830B (en) | 2018-12-28 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107187419B (en) * | 2017-05-18 | 2023-08-08 | 辽宁科大物联科技有限公司 | Automobile door lock state identification device and identification method |
| CN109879134A (en) * | 2019-04-09 | 2019-06-14 | 深圳市海浦蒙特科技有限公司 | A kind of high pressure door lock detection circuit and method |
| CN111455613B (en) * | 2020-03-17 | 2021-09-21 | 无锡飞翎电子有限公司 | Unlocking processing method and device of electronic door lock, clothes processing device and medium |
| CN113550121B (en) * | 2021-08-17 | 2023-10-03 | 四川虹美智能科技有限公司 | Washing machine door lock state detection method and device |
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| CN106676830A (en) | 2017-05-17 |
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Effective date of registration: 20190807 Address after: 214028 No. 18 Changjiang South Road, Wuxi National High-tech Development Zone, Jiangsu Province Patentee after: Wuxi Swan Electrical Appliances Co., Ltd. Address before: 214028 Wuxi Changjiang Road, Wuxi New District, Jiangsu, No. 18 Patentee before: Wuxi Xiaotianer Co., Ltd. |
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