CN110401435A - Knob assembly and household electrical appliance - Google Patents
Knob assembly and household electrical appliance Download PDFInfo
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- CN110401435A CN110401435A CN201910691483.7A CN201910691483A CN110401435A CN 110401435 A CN110401435 A CN 110401435A CN 201910691483 A CN201910691483 A CN 201910691483A CN 110401435 A CN110401435 A CN 110401435A
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- magnetic sensor
- magnetic
- magnet
- knob assembly
- magnet ring
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- 230000006698 induction Effects 0.000 description 15
- 238000010586 diagram Methods 0.000 description 7
- 230000005355 Hall effect Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004851 dishwashing Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/04—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by terrestrial means
- G01C21/08—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by terrestrial means involving use of the magnetic field of the earth
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/90—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of galvano-magnetic devices, e.g. Hall-effect devices
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- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Radar, Positioning & Navigation (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
- Switches With Compound Operations (AREA)
Abstract
The invention discloses a kind of knob assembly and household electrical appliance.Knob assembly includes knob, magnet ring, at least two Magnetic Sensors and controller, at least two Magnetic Sensors or magnet ring are located at knob, magnet ring and at least two Magnetic Sensors are relatively rotatable to each other, magnet ring includes the alternately arranged multiple magnets of south poles, at least two Magnetic Sensors are used to detect the pole change of multiple magnets in the case where magnet ring and at least two Magnetic Sensors relatively rotate and export corresponding at least two groups electric signal, controller is used to determine the relative rotation information of magnet ring and at least two Magnetic Sensors according at least two groups electric signal, in the case that wherein magnet and at least two Magnetic Sensors relatively rotate a circle, the group quantity of electric signal is twice of the number of magnetic poles of magnet.In this way, knob assembly, when being applied to household electrical appliance, the panel of household electrical appliance is not necessarily to aperture, and due to twice of the number of magnetic poles that the group quantity of electric signal is magnet, more control instructions can be achieved in this way, knob assembly precision is high.
Description
Technical field
The present invention relates to fields of home appliance technology, more specifically, are related to a kind of knob assembly and household electrical appliance.
Background technique
In the related art, the switching knob that household electrical appliance use includes the mechanical encoding switching knob of physical connection.
And the knob of physical connection has to the aperture on the panel of electrical equipment when in use and destroy device housings integrality and
Leakproofness, and position of opening fixation causes design limited, in addition, the rotary switch of physical connection is using a period of time
Afterwards, it since mechanical wear makes contact contact resistance become larger, causes poor contact and influences service life.
Summary of the invention
Embodiment of the present invention provides a kind of knob assembly and household electrical appliance.
The knob assembly of embodiment of the present invention includes knob, magnet ring, at least two Magnetic Sensors and controller, it is described extremely
Few two Magnetic Sensors or the magnet ring are located at the knob, and the controller connects at least two Magnetic Sensor, described
Magnet ring and at least two Magnetic Sensor are relatively rotatable to each other, and the magnet ring includes the alternately arranged multiple magnets of south poles,
At least two Magnetic Sensor is used to detect in the case where the magnet ring and at least two Magnetic Sensor relatively rotate
The pole change of the multiple magnet simultaneously exports corresponding at least two groups electric signal, and the controller is used for according to described at least two
Group electric signal determines the relative rotation information of the magnet ring and at least two Magnetic Sensor, wherein the magnet and it is described extremely
In the case that few two Magnetic Sensors relatively rotate a circle, the group quantity of the electric signal is the two of the number of magnetic poles of the magnet
Times.
The knob assembly of above embodiment realizes the output of unlike signal, such set of knobs using magnetic induction principle
For part when being applied to household electrical appliance, the panel of household electrical appliance is not necessarily to aperture, and encloses in magnet and Magnetic Sensor relative rotation one
In the case where, the group quantity of electric signal is twice of the number of magnetic poles of magnet, more control instructions can be achieved in this way, and revolve
The direction of rotation of button component identification and the precision of speed are high.
In some embodiments, at least two Magnetic Sensor includes the first Magnetic Sensor and the second Magnetic Sensor,
The distance between first Magnetic Sensor and second Magnetic Sensor H meet: H=0.5W+n*W, wherein W is the magnetic
The width of one magnetic pole of body, n are positive integer.
In some embodiments, the relative rotation information includes rotation direction and velocity of rotation.
In some embodiments, the controller be used for according to preset multiple groups electric signal arrangement mode and it is described at least
Two groups of electric signals determine the relative rotation information.
In some embodiments, at least two Magnetic Sensor is located at the underface of the magnet ring.
In some embodiments, along the direction of the rotation, each magnet it is of same size.
In some embodiments, electric signal described in one group includes two pulse signals, the phase of described two pulse signals
Potential difference is 90 degree.
In some embodiments, at least two Magnetic Sensor includes two Magnetic Sensors, in the magnet ring and institute
In the case where stating two Magnetic Sensors, half of magnet pole widths of every relative rotation, the change in electric of each Magnetic Sensor output
Once.
In some embodiments, the knob assembly includes circuit board, the controller and Magnetic Sensor setting
In the circuit board.
Embodiment of the present invention also provides a kind of household electrical appliance.Household electrical appliance include the set of knobs of any of the above-described embodiment
Part.
In the household electrical appliance of above embodiment, knob assembly can realize the defeated of unlike signal using magnetic induction principle
Out, for such knob assembly when being applied to household electrical appliance, the panel of household electrical appliance is not necessarily to aperture, and in magnet and Magnetic Sensor
In the case that relative rotation one is enclosed, the group quantity of electric signal is twice of the number of magnetic poles of magnet, and more controls can be achieved in this way
System instruction, and the direction of rotation of knob assembly identification and the precision of speed are high.
The additional aspect and advantage of embodiments of the present invention will be set forth in part in the description, partially will be from following
Description in become obvious, or the practice of embodiment through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect and advantage of the invention is from combining in description of the following accompanying drawings to embodiment by change
It obtains obviously and is readily appreciated that, in which:
Fig. 1 is the diagrammatic cross-section of the knob assembly of embodiment of the present invention.
Fig. 2 is the magnet ring of embodiment of the present invention and the perspective view that the position of Magnetic Sensor is placed.
Fig. 3 is the magnet ring of embodiment of the present invention and the top view that the position of Magnetic Sensor is placed.
Fig. 4 is the circuit diagram of knob assembly in the related technology.
Fig. 5 is the circuit diagram of the knob assembly of embodiment of the present invention.
Fig. 6 is the working principle diagram of the Magnetic Sensor of embodiment of the present invention.
Fig. 7 is another working principle diagram of the Magnetic Sensor of embodiment of the present invention.
Fig. 8 is the first Magnetic Sensor of embodiment of the present invention and the pulse signal schematic diagram of the second Magnetic Sensor output.
Fig. 9 is the magnet ring of embodiment of the present invention and another top view that the position of Magnetic Sensor is placed.
Figure 10 is the magnet ring of embodiment of the present invention and another perspective view that the position of Magnetic Sensor is placed.
Figure 11 is the magnet ring of embodiment of the present invention and the another perspective view that the position of Magnetic Sensor is placed.
Figure 12 is the structural schematic diagram of the household electrical appliance of embodiment of the present invention.
Main element symbol description:
Knob assembly 100, knob 10, magnet ring 20, magnet 22, Magnetic Sensor 30, the first Magnetic Sensor 32, the second magnetic sensing
Device 34, controller 40, the first permanent magnet 50, the second permanent magnet 60, panel 70, circuit board 80, household electrical appliance 1000, display screen
110。
Specific embodiment
Embodiments of the present invention are described below in detail, the example of embodiment is shown in the accompanying drawings, wherein identical or class
As label indicate same or similar element or element with the same or similar functions from beginning to end.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
In the description of embodiments of the present invention, term " first ", " second " are used for description purposes only, and cannot understand
For indication or suggestion relative importance or implicitly indicate the quantity of indicated technical characteristic.Define as a result, " first ",
The feature of " second " can explicitly or implicitly include one or more feature.In embodiments of the present invention
In description, the meaning of " plurality " is two or more, unless otherwise specifically defined.
In the description of embodiments of the present invention, it should be noted that unless otherwise clearly defined and limited, term
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；Can be directly connected, can also indirectly connected through an intermediary, can be connection inside two elements or
The interaction relationship of two elements.For the ordinary skill in the art, can understand as the case may be above-mentioned
The concrete meaning of term in embodiments of the present invention.
Following disclosure provides many different embodiments or example is used to realize embodiments of the present invention not
Same structure.In order to simplify the disclosure of embodiments of the present invention, hereinafter the component of specific examples and setting are described.When
So, they are merely examples, and is not intended to limit the present invention.In addition, embodiments of the present invention can be in different examples
Repeat reference numerals and/or reference letter in son, this repetition are for purposes of simplicity and clarity, itself not indicate to be begged for
By the relationship between various embodiments and/or setting.In addition, the various specific techniques that embodiments of the present invention provide
With the example of material, but those of ordinary skill in the art may be aware that the application of other techniques and/or other materials make
With.
Fig. 1, Fig. 2 and Fig. 3 are please referred to, the knob assembly 100 of embodiment of the present invention can be used for household electrical appliance 1000.Knob
Component 100 includes knob 10, magnet ring 20, at least two Magnetic Sensors 30 and controller 40, at least two Magnetic Sensors 30 or magnetic
Ring 20 is located at knob 10, and controller 40 connects at least two Magnetic Sensors 30, and magnet ring 20 and at least two sensors can be opposite
Rotation, magnet ring 20 include the alternately arranged multiple magnets 22 of south poles, and at least two Magnetic Sensors 30 are in magnet ring 20 and extremely
Few two Magnetic Sensors 30 detect the pole change of multiple magnets 22 in the case where relatively rotating and export corresponding at least two groups
Electric signal, controller 40 are used to determine the relative rotation of magnet ring 20 and at least two Magnetic Sensors 30 according at least two groups electric signal
Information, in the case that wherein magnet 22 and at least two Magnetic Sensors 30 relatively rotate a circle, the group quantity of electric signal is magnet
Twice of 22 number of magnetic poles.
The knob assembly 100 of above embodiment realizes the output of unlike signal, such knob using magnetic induction principle
For component 100 when being applied to household electrical appliance 1000, the panel of household electrical appliance 1000 is not necessarily to aperture, and senses in magnet 22 and magnetic
In the case that 30 relative rotation one of device is enclosed, the group quantity of electric signal is twice of the number of magnetic poles of magnet 22, be can be achieved so more
More control instructions, and the direction of rotation of the identification of knob assembly 100 and the precision of speed are high.
In the related art, referring to Fig. 4, Fig. 4 is the structure chart of the knob assembly 200 of mechanical type rotating coding.Knob
Component 200 includes mechanical type rotating encoder 210 and integrated circuit board 220 (PCB, Printed Circuit Board).It is mechanical
Formula rotary encoder 210 needs to be embedded into the shell of the knob of physics and aperture is fixed on operation panel.Integrated circuit board
220 are integrated with the two-way phase difference output pulse circuit that acquisition encoder generates.Mechanical encoder 210 is produced using mechanical stress
Raw contact phase difference exports pulse, when knob is rotated both clockwise and counterclockwise, coded combination and group that mechanical stress generates
Closing the sequence occurred is to uniquely determine, and reading corresponding pulses by MCU is that can determine direction of rotation and the speed of knob.
In this way, since the knob assembly 200 of mechanical type rotating coding is had to when in use on the panel of household electrical appliance
Aperture, is easily destroyed the integrality and leakproofness of the shell of household electrical appliance in this way, and position of opening be it is fixed, be easy in this way
Cause design limited.In addition, the knob assembly 200 by physical connection is easy to appear mechanical mill in use for some time
Damage, be easy to cause the contact resistance of contact to become larger in this way, poor contact and influence service life.
And in embodiments of the present invention, the output of unlike signal, such knob assembly are realized using magnetic induction principle
100 when being applied to household electrical appliance 1000, and the panel of household electrical appliance 1000 is not necessarily to aperture, and in magnet 22 and Magnetic Sensor 30
In the case that relative rotation one is enclosed, the group quantity of electric signal is twice of the number of magnetic poles of magnet 22, relative to the relevant technologies
In the case that the group quantity for the electric signal that magnetic induction knob 10 is exported is only one times of the number of magnetic poles of magnet 22, this embodiment party
The knob assembly 100 of formula can realize more control instructions, and the precision of the direction of rotation of the identification of knob assembly 100 and speed
It is high.
Specifically, Fig. 2 and Fig. 3 are please referred to, magnet ring 20 includes the alternately arranged multiple magnets 22 of south poles, it is possible to understand that
For the South Pole (S) and the arctic (N) is alternately arranged, that is to say, that the left and right ends in the South Pole are the arctic.The left and right ends of the arctic are south
Pole.Referring to Fig. 3, magnet ring 20 includes four magnets 22.Each magnet 22 includes south and north poles, the south of plurality of magnet ring 20
Pole and the arctic are alternately arranged, altogether four pairs of magnetic poles, that is to say, that totally eight magnetic poles.
Referring to Fig. 1, in one embodiment, magnet ring 20 is embeddable to arrive knob 10.Magnet ring is driven when knob 10 rotates
20 rotations, and Magnetic Sensor 30 is fixed.In the case where magnet ring 20 rotates, Magnetic Sensor 30 can detect the magnetic pole of multiple magnets 22
Variation.
In another embodiment, Magnetic Sensor 30 is located at knob 10, drives Magnetic Sensor 30 to rotate when knob 10 rotates,
And magnet ring 20 is fixed.In the case where Magnetic Sensor 30 rotates, Magnetic Sensor 30 can detect the pole change of multiple magnets 22.
Controller 40 includes MCU (Microcontroller Unit, microprocessor).Controller 40 can be used for providing meter
Calculation, processing and control ability, support the operation of entire knob assembly 100.
In some embodiments, referring to Fig. 1, knob assembly 100 includes circuit board 80, controller 40 and Magnetic Sensor
30 are arranged in circuit board 80.In this way, controller and Magnetic Sensor 30 can be realized by circuit board 80 and be electrically connected and carry out information
Transmission.
Specifically, circuit board 80 includes PCB (Printed Circuit Board, printed circuit board).30 He of Magnetic Sensor
Controller 40 can be with scolding tin on circuit board 80.Circuit connection on knob assembly 100 can be in the enterprising walking line of circuit board 80.
Referring to Fig. 1, knob assembly 100 further includes the first permanent magnet 50 for being located at knob 10, for installing knob assembly
100 household electrical appliance 1000 include the second permanent magnet 60 and panel 70.First permanent magnet 50 and the second permanent magnet 60 can be mutual
It is attracted so that knob assembly 100 can be adsorbed on panel 70.Knob assembly 100 may make to be easy for installation and removal in this way.
It should be noted that in other implementations, knob 10 can be mounted on panel 70 by modes such as buckle and groove, screws
On, it is not limited here.
In the present embodiment, at least two Magnetic Sensors 30 include two or more Magnetic Sensors 30.It needs
, it is noted that preferably, in one embodiment, knob assembly 100 includes two Magnetic Sensors 30.In this way, control can be reduced
The treating capacity of device 40, improves efficiency.
In the case where magnet ring 20 and two Magnetic Sensors 30, half of magnet pole widths of every relative rotation, each Magnetic Sensor 30
The change in electric of output is primary.So, so that the state of multiple groups of electric signals of two Magnetic Sensors 30 output and suitable
Sequence is unique, is conducive to the direction of rotation and the rotation speed that detect knob assembly 100 in this way.
Specifically, Magnetic Sensor 30 can be hall effect sensor.Hall effect sensor includes voltage-stablizer, Hall member
Part, difference amplifier, Schmitt trigger and output stage.The exportable digital quantity of hall effect sensor.
Referring to Fig. 6, Fig. 6 is the electric signal of the output of Magnetic Sensor 30 and the magnetic induction on the surface by Magnetic Sensor 30
Intensity (B/mT) relational graph.When the South Pole (pole S) is close to Magnetic Sensor 30 and magnetic induction intensity exceeds South Pole threshold value, the Hall
Effect sensor can export low-voltage, be indicated with " 0 ", until the arctic (pole N) is close to Magnetic Sensor 30 and magnetic induction intensity surpasses
Out in the case where the threshold value of the arctic, hall effect sensor meeting output HIGH voltage is indicated with " 1 ".It should be pointed out that in this reality
It applies in mode, it is necessary to which output could be switched by exchanging north and south poles, and integrated magnetic hysteresis can separate South Pole threshold value and arctic threshold value
To provide reliable switching.
In other examples, referring to Fig. 7, Fig. 7 is the electric signal of the output of Magnetic Sensor 30 and senses by magnetic
Another relational graph of the magnetic induction intensity on the surface of device 30.When the South Pole (pole S) is close to Magnetic Sensor 30 and magnetic induction intensity exceeds
When the threshold value of the South Pole, which can export low-voltage, be indicated with " 1 ", until the arctic (pole N) is close to Magnetic Sensor 30
And in the case that magnetic induction intensity exceeds arctic threshold value, hall effect sensor meeting output HIGH voltage is indicated with " 0 ".
It should be noted that the output of Magnetic Sensor 30 and the magnetic induction intensity relationship on the surface by Magnetic Sensor 30 can
It is configured according to the type of Magnetic Sensor 30, it is not limited here.
In some embodiments, Fig. 2 and Fig. 3 are please referred to, at least two Magnetic Sensors 30 include the first Magnetic Sensor 32
With the second Magnetic Sensor 34, the distance between the first Magnetic Sensor 32 and the second Magnetic Sensor 34 H meet: H=0.5W+n*W,
In, W is the width of a magnetic pole of magnet 22, and n is positive integer.
So, so that the width of half of the magnetic pole of every rotation of magnet ring 20, the first Magnetic Sensor 32 and the second Magnetic Sensor
34 output state can change once, so that in the case where one circle of rotation of magnet ring 20,32 He of the first Magnetic Sensor
The group quantity of the electric signal of second Magnetic Sensor 34 output is twice of the number of magnetic poles of magnet 22.
Specifically, Fig. 2 and Fig. 3 are please referred to, in one embodiment, two Magnetic Sensors 30 be located at magnet ring 20 just under
Side.Magnet ring 20 totally 8 magnetic poles, respectively 4 poles N and 4 poles S.The pole N and the pole S are alternately arranged.Wherein, the first Magnetic Sensor 32
Distance with the second Magnetic Sensor 34 is 1.5W, and W is the width of a magnetic pole of magnet 22.Fig. 2 and Fig. 3 show the first magnetic biography
The initial position of sensor 32 and the second Magnetic Sensor 34, the first Magnetic Sensor 32 are located at the underface of the medium position of the pole N, and first
The electric signal that Magnetic Sensor 32 exports is high level, is indicated with " 1 ", the second Magnetic Sensor 34 is located at the intersection of the pole N and the pole S
The electric signal of underface, the output of the second Magnetic Sensor 34 is low level, is indicated with " 0 ".First Magnetic Sensor 32 and the second magnetic pass
One group of electric signal that sensor 34 exports is 10.
Referring to Fig. 2, knob 10 rotates clockwise, and in the case that knob 10 rotates half of magnetic pole, the first Magnetic Sensor
32 are located at the underface of the intersection of the pole N and the pole S, and the electric signal of the first Magnetic Sensor 32 output is high level, is indicated with " 1 ".
Second Magnetic Sensor 34 is located at the underface of the medium position of the pole N, and the electric signal of the second Magnetic Sensor 34 output is high level, with
" 1 " indicates.First Magnetic Sensor 32 and one group of electric signal of the second Magnetic Sensor 34 output are 11.
And so on, in the case where knob 10 rotates clockwise a circle, the first Magnetic Sensor 32 and the second Magnetic Sensor
34 export 16 groups of electric signals respectively, are respectively as follows: 10,11,01,00,10,11,01,00,10,11,01,00,10,11,01,00.
The state and sequence of 16 groups of electric signals are unique.
In some embodiments, relatively rotating information includes rotation direction and velocity of rotation.
In some embodiments, controller 40 is used for according to preset multiple groups electric signal arrangement mode and at least two groups electricity
Signal, which determines, relatively rotates information.In this way, the accuracy of controller 40 can be improved in this way.
Specifically, in the present embodiment, referring to Fig. 2, due in the case where knob 10 rotates clockwise a circle, the
One Magnetic Sensor 32 and the second Magnetic Sensor 34 export 16 groups of electric signals respectively, be respectively as follows: 10,11,01,00,10,11,01,
00,10,11,01,00,10,11,01,00.16 groups of electric signals can be understood as preset multiple groups electric signal arrangement mode.
It, can be according to the first Magnetic Sensor 32 and the second continuously output two of Magnetic Sensor 34 in the case where knob 10 rotates
Group electric signal determines the rotation direction of the first Magnetic Sensor 32 and the second Magnetic Sensor 34, for example, the first Magnetic Sensor 32 and the
It is respectively 10 and 11 that two Magnetic Sensors 34, which export two groups of electric signals, then can determine that the rotation direction of knob 10 is clockwise.Again
Have, in the present embodiment, the time of two groups of electric signals can be exported according to the first Magnetic Sensor 32 and the second Magnetic Sensor 34
Interval calculation goes out the velocity of rotation of knob 10.
In some embodiments, along rotation direction, each magnet 22 it is of same size.In this way, can be passed in this way with magnetic
The electric signal that sensor 30 exports is according to accurate.Specifically, Fig. 2 and Fig. 3 are please referred to, magnet ring 20 totally 8 magnetic poles, respectively 4 poles N
With 4 poles S, each magnetic pole it is of same size.
Referring to Fig. 8, in some embodiments, electric signal described in one group includes two pulse signals, described two arteries and veins
The phase difference for rushing signal is 90 degree.So, so that controller 40 can identify direction and the rotation of the positive and negative rotation of knob 10
Speed.
Specifically, referring to Fig. 8, Fig. 8 is the pulse signal V exported in 30 unit time of Magnetic Sensor T.Wherein, solid line
For the pulse signal of the first Magnetic Sensor 32 output.Dotted line is the pulse signal of the second Magnetic Sensor 34 output.First magnetic sensing
The phase difference of the pulse signal of pulse signal and the output of the second Magnetic Sensor 34 that device 32 exports is 90 degree.
It should be noted that in other examples, the first Magnetic Sensor 32 and the second Magnetic Sensor 34 can be distinguished
Other positions near magnet ring 20 are set, as long as guaranteeing that the first Magnetic Sensor 32 and second can be made when knob 10 rotates
The state for the electric signal that sensor is exported changes, and guarantees to be greater than by the magnetic induction intensity of the first Magnetic Sensor 32
The magnetic induction intensity of its corresponding magnetic pole threshold value and the second Magnetic Sensor 34 is greater than its corresponding magnetic pole threshold value.
In one embodiment, the first Magnetic Sensor 32 and the second Magnetic Sensor 34 can be separately positioned under magnet ring 20
Side, as shown in Figure 9 and Figure 10.In the case where one circle of rotation of knob 10, the first Magnetic Sensor 32 and the second magnetic can be made to sense
The state for the electric signal that device 34 is exported changes, and the sequence of the electric signal exported is unique.
In another embodiment, the first Magnetic Sensor 32 and the second Magnetic Sensor 34 can be according to knob assemblies 100
Design requirement is separately positioned on the top of magnet ring 20, as shown in figure 11.In the case where one circle of rotation of knob 10, first can be made
The state for the electric signal that Magnetic Sensor 32 and the second Magnetic Sensor 34 are exported changes, and the sequence of the electric signal exported
Uniquely.
Figure 12 is please referred to, embodiment of the present invention also provides a kind of household electrical appliance 1000.Household electrical appliance 1000 include above-mentioned
The knob assembly 100 of any embodiment.
In the household electrical appliance 1000 of embodiment of the present invention, knob assembly 100 can realize difference using magnetic induction principle
The output of signal, for such knob assembly 100 when being applied to household electrical appliance, the panel of household electrical appliance is not necessarily to aperture, and in magnetic
In the case that body 22 and 30 relative rotation one of Magnetic Sensor are enclosed, the group quantity of electric signal is twice of the number of magnetic poles of magnet 22,
More control instructions can be achieved in this way, and the direction of rotation of the identification of knob assembly 100 and the precision of speed are high.
Specifically, household electrical appliance 1000 include display screen 110, and user can be by operation knob component 100 to adjust household
The operating parameter of electric appliance, and corresponding operating parameter can be shown in display screen 110.Household electrical appliance 1000 include but unlimited
In micro-wave oven, oven (including microwave oven, electric oven, gas burning roastor), electric steam furnace, refrigerator, air-conditioning, washing machine, dish-washing machine,
Water dispenser etc..The household electrical appliance 1000 of diagram are micro-wave ovens.
In the description of this specification, reference term " embodiment ", " some embodiments ", " schematically implementation
The description of mode ", " example ", specific examples or " some examples " etc. means the tool described in conjunction with the embodiment or example
Body characteristics, structure, material or feature are contained at least one embodiment or example of the invention.In the present specification,
Schematic expression of the above terms are not necessarily referring to identical embodiment or example.Moreover, the specific features of description, knot
Structure, material or feature can be combined in any suitable manner in any one or more embodiments or example.
Although embodiments of the present invention have been shown and described above, it is to be understood that above embodiment is
Illustratively, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be right
Above-mentioned implementation implementation is changed, modifies, replacement and variant.
Claims (10)
1. a kind of knob assembly is used for household electrical appliance, which is characterized in that the knob assembly includes knob, magnet ring, at least two
Magnetic Sensor and controller, at least two Magnetic Sensor or the magnet ring are located at the knob, and the controller connects institute
At least two Magnetic Sensors are stated, the magnet ring and at least two Magnetic Sensor are relatively rotatable to each other, and the magnet ring includes south
The alternately arranged multiple magnets in the arctic, at least two Magnetic Sensor are used to sense in the magnet ring and at least two magnetic
Device detects the pole change of the multiple magnet in the case where relatively rotating and exports corresponding at least two groups electric signal, the control
Device processed is used to determine that the relative rotation of the magnet ring and at least two Magnetic Sensor is believed according at least two groups electric signal
Breath, wherein in the case that the magnet and at least two Magnetic Sensor relatively rotate a circle, the group quantity of the electric signal
It is twice of the number of magnetic poles of the magnet.
2. knob assembly according to claim 1, which is characterized in that at least two Magnetic Sensor is passed including the first magnetic
Sensor and the second Magnetic Sensor, the distance between first Magnetic Sensor and second Magnetic Sensor H meet: H=0.5W+
N*W, wherein W is the width of a magnetic pole of the magnet, and n is positive integer.
3. knob assembly according to claim 1, which is characterized in that the relative rotation information includes rotation direction and turns
Dynamic speed.
4. knob assembly according to claim 1, which is characterized in that the controller is used for according to preset multiple groups telecommunications
Number arrangement mode and at least two groups electric signal determine the relative rotation information.
5. knob assembly according to claim 1, which is characterized in that at least two Magnetic Sensor is located at the magnet ring
Underface.
6. knob assembly according to claim 1, which is characterized in that along the direction of the rotation, each magnet
It is of same size.
7. knob assembly according to claim 1, which is characterized in that electric signal described in one group includes two pulse signals,
The phase difference of described two pulse signals is 90 degree.
8. knob assembly according to claim 1, which is characterized in that at least two Magnetic Sensor includes that two magnetic pass
Sensor, in the case where the magnet ring and described two Magnetic Sensors half of magnet pole widths of every relative rotation, each magnetic is passed
The change in electric of sensor output is primary.
9. knob assembly according to claim 1, which is characterized in that the knob assembly includes circuit board, the control
Device and the Magnetic Sensor are arranged in the circuit board.
10. a kind of household electrical appliance, which is characterized in that the household electrical appliance include the described in any item set of knobs of claim 1 to 9
Part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910691483.7A CN110401435A (en) | 2019-07-29 | 2019-07-29 | Knob assembly and household electrical appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910691483.7A CN110401435A (en) | 2019-07-29 | 2019-07-29 | Knob assembly and household electrical appliance |
Publications (1)
| Publication Number | Publication Date |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112908761A (en) * | 2021-01-08 | 2021-06-04 | 重庆睿歌微电子有限公司 | Non-contact knob device, identification method thereof and electric equipment |
| CN113433818A (en) * | 2021-06-23 | 2021-09-24 | 广东小天才科技有限公司 | Rotation control device and electronic apparatus |
| CN113701790A (en) * | 2021-09-16 | 2021-11-26 | 美的威灵电机技术（上海）有限公司 | Encoder and servo system |
| CN114138050A (en) * | 2020-09-04 | 2022-03-04 | 佛山市顺德区美的电热电器制造有限公司 | Knob device, household appliance and control method thereof |
| CN115202432A (en) * | 2022-05-31 | 2022-10-18 | 宁波普瑞均胜汽车电子有限公司 | Method for identifying state of knob on screen and knob on screen |
| WO2023040209A1 (en) * | 2021-09-16 | 2023-03-23 | 美的威灵电机技术（上海）有限公司 | Encoder and servo system |
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| CN202434397U (en) * | 2011-11-29 | 2012-09-12 | 孔凡伟 | Magnetic force knob controller |
| CN204731676U (en) * | 2015-07-13 | 2015-10-28 | 浙江绍兴苏泊尔生活电器有限公司 | Adjusting knob and electric appliance product |
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| JP2009150732A (en) * | 2007-12-19 | 2009-07-09 | Asahi Kasei Electronics Co Ltd | Position detection device |
| CN202434397U (en) * | 2011-11-29 | 2012-09-12 | 孔凡伟 | Magnetic force knob controller |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114138050A (en) * | 2020-09-04 | 2022-03-04 | 佛山市顺德区美的电热电器制造有限公司 | Knob device, household appliance and control method thereof |
| CN114138050B (en) * | 2020-09-04 | 2023-11-03 | 佛山市顺德区美的电热电器制造有限公司 | Knob device, household appliance and control method of household appliance |
| CN112908761A (en) * | 2021-01-08 | 2021-06-04 | 重庆睿歌微电子有限公司 | Non-contact knob device, identification method thereof and electric equipment |
| CN113433818A (en) * | 2021-06-23 | 2021-09-24 | 广东小天才科技有限公司 | Rotation control device and electronic apparatus |
| CN113701790A (en) * | 2021-09-16 | 2021-11-26 | 美的威灵电机技术（上海）有限公司 | Encoder and servo system |
| WO2023040209A1 (en) * | 2021-09-16 | 2023-03-23 | 美的威灵电机技术（上海）有限公司 | Encoder and servo system |
| CN115202432A (en) * | 2022-05-31 | 2022-10-18 | 宁波普瑞均胜汽车电子有限公司 | Method for identifying state of knob on screen and knob on screen |
| CN115202432B (en) * | 2022-05-31 | 2024-03-15 | 宁波普瑞均胜汽车电子有限公司 | On-screen knob state identification method and on-screen knob |
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