CN207779418U - A kind of non-contact encoder and electronic equipment - Google Patents
A kind of non-contact encoder and electronic equipment Download PDFInfo
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- CN207779418U CN207779418U CN201820175554.9U CN201820175554U CN207779418U CN 207779418 U CN207779418 U CN 207779418U CN 201820175554 U CN201820175554 U CN 201820175554U CN 207779418 U CN207779418 U CN 207779418U
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Abstract
The utility model is related to encoder techniques field more particularly to a kind of non-contact encoders and electronic equipment.Wherein, which includes：Round circuit board, is laid at least two coil groups positioned at different zones, and each coil group includes at least two coils；Shell, the central axis of round circuit board is oppositely arranged and surround with round circuit board, the rounded bottom of shell towards round circuit board is provided with several metal portions, in rotation case, one metal portion is at least partly fallen in the projection of vertical direction on any coil in any one coil group, and any one metal portion of several metal portions is not in the projection of vertical direction all falls within any one coil group on a remaining coil；Coding circuit, in the coil of the projection and every group of coil group coil of vertical direction, generates encoded signal according to metal portion.Therefore, the non-contact code device the space of vertical direction be it is open with it is unobstructed, therefore, realize the expansion in terms of display.
Description
Technical field
The utility model is related to encoder techniques field more particularly to a kind of non-contact encoders and electronic equipment.
Background technology
Rotary encoder is as signal entering apparatus, in terms of the regulation and control for being widely used in electrical appliance.Wherein, rotation is compiled
Code device includes absolute type encoder and incremental encoder, the operation principle of the two be a series of regular electric signals of output with
It realizes and differentiates and adjust.
Traditional technology provides a kind of incremental encoder comprising shaft and the pulse code-disc with shaft rotation, arteries and veins
It rushes code-disc and uniformly scribes apertured grating, light source and light-sensitive element are installed on code-disc both sides.When code-disc is rotated with shaft, often
The light and shade variation that a gap just generates a light is turned over, light-sensitive element acquires light and shade variation, forms acquisition signal.Acquisition letter
Number amplify by shaping, incremental encoder can export the pulse signal of certain amplitude and power.
Inventor in the process of implementing the utility model, it is found that traditional technology has at least the following problems：Conventional delta
The mechanical realization of formula encoder is more complicated, such as：It is provided with rotation axis, and rotation axis forms with shell seal in vertical direction
Closed region.Due to the blocking of rotation axis, such incremental encoder is difficult to show the expansion of aspect, therefore, serious to limit
The appearance design of product and the expansion of hardware aspect.
Utility model content
In order to overcome above-mentioned technical problem, a purpose of the utility model embodiment to be intended to provide a kind of non-contact coding
Device and electronic equipment solve the technical problem for the coder structure complexity that traditional technology provides.
In a first aspect, the utility model embodiment provides a kind of non-contact encoder, the non-contact encoder includes：
Round circuit board, is laid at least two coil groups positioned at different zones, and each coil group includes at least two coils；Outside
Shell, is oppositely arranged with the round circuit board and surround the central axis of the circle circuit board, and the shell is towards institute
The rounded bottom for stating round circuit board is provided with several metal portions, and when rotating the shell, a metal portion is in vertical direction
Projection at least partly fall on any coil, and any one metal portion of several metal portions is in vertical direction
Projection is not all fallen on any one remaining coil of the coil；It is each in coding circuit, at least two coil group
Coil connects, and for falling the projection in every group of coil group coil in vertical direction in response to metal portion, generates encoded signal.
Optionally, the round circuit board is divided into the subregions such as N, and each coil of each coil group is laid in difference
Single equal subregions in, N is the positive integer more than or equal to 4.
Optionally, several metal portions are uniformly arranged on the rounded bottom of the round circuit board.
Optionally, the quantity of the multiple that the N is 4, several metal portions is N/4；The circle circuit board is laid
It includes the first induction coil and the first reference coil, another line to have two coil groups positioned at different zones, a coil group
Circle group includes the second induction coil and the second reference coil, is fallen in second ginseng in the projection of vertical direction in a metal portion
When examining coil, and the shell being rotated the subregional angle such as X, metal portion is fallen again in the projection of vertical direction described
On first reference coil, wherein X is positive integer.
Optionally, when rotating the shell toward the direction of first reference coil according to second reference coil, institute
It is 3 to state X.
Optionally, when rotating the shell toward the direction of second reference coil according to first reference coil, institute
It is 1 to state X.
Optionally, the N is 32 or 24 or 16 or 8.
Optionally, the metal portion is the metal derby of regular shape.
Optionally, the coding circuit includes：Inductive switching chip connects with each coil of each coil group respectively
It connects, for converting the coil in vertical direction by the metal portion stops and generates oscillator signal；Controller, with institute
The connection of inductive switching chip is stated, for generating encoded signal according to the oscillator signal.
In second aspect, the utility model embodiment provides a kind of electronic equipment, and the electronic equipment includes any one institute
The non-contact encoder stated.
In the non-contact encoder that the utility model embodiment provides, round circuit board is laid with positioned at different zones
At least two groups coil, each coil group include at least two coils.Shell is oppositely arranged with round circuit board and surround circular electric
The rounded bottom of the central axis of road plate, shell towards round circuit board is provided with several metal portions, in rotation case, one
A metal portion is at least partly fallen in the projection of vertical direction on any coil in any one coil group, and several metal portions
Any one metal portion in the projection of vertical direction does not all fall within any one coil group on a remaining coil.Coding
Circuit, in the coil of the projection and every group of coil group coil of vertical direction, generates encoded signal according to metal portion.Therefore, this is non-
Contact encoder the space of vertical direction be it is open with it is unobstructed, therefore, realize the expansion in terms of display.
Description of the drawings
Fig. 1 is that the utility model embodiment provides a kind of oscillation principle block diagram；
Fig. 2 is that the utility model embodiment provides a kind of electrical block diagram of oscillating circuit；
Fig. 3 is the signal that the utility model embodiment provides that a kind of metal portion projects to round circuit board in vertical direction
Figure；
Fig. 4 is that the utility model embodiment provides a kind of connection diagram of coding circuit and each coil；
Fig. 5 is that the utility model embodiment provides a kind of working timing figure of non-contact encoder；
Fig. 6 is that the utility model embodiment provides a kind of circuit structure block diagram of coding circuit；
Fig. 7 is that the utility model embodiment provides a kind of operating diagram of non-contact encoder.
Specific implementation mode
For the ease of understanding the utility model, with reference to the accompanying drawings and detailed description, the utility model is carried out more
Detailed description.It should be noted that when element is expressed " being fixed on " another element, it can be directly in another element
Upper or placed in the middle there may be one or more therebetween elements.When an element is expressed " connection " another element, it can
To be directly to another element or may exist one or more elements placed in the middle therebetween.This specification is used
Term " vertical ", " horizontal ", "left", "right" and similar statement for illustrative purposes only.
Unless otherwise defined, technical and scientific term all used in this specification and the skill for belonging to the utility model
The normally understood meaning of technical staff in art field is identical.Art used in the description of the utility model in this specification
Language is intended merely to the purpose of description specific embodiment, is not intended to limitation the utility model.Art used in this specification
Language "and/or" includes any and all combinations of one or more relevant Listed Items.
For convenience of explanation and understand the technical solution of the utility model embodiment, illustrate below used in the noun of locality
The orientation that attached drawing of being subject to is shown.
The non-contact encoder that the utility model embodiment provides can be applied to each class of electronic devices, and configure as electricity
The regulation and control interface of sub- equipment, such as：Electronic equipment is motor device.In electric system, by adjust non-contact encoder with
Realize the adjusting of motor speed.Electronic equipment is kitchen range equipment.In temperature control system, by adjust non-contact encoder with
Realize non-pole light regulating.Therefore, above-mentioned non-contact encoder can be widely used in electrical appliance.
As previously mentioned, conventional delta formula encoder is in addition to above-mentioned the shortcomings that being previously mentioned, there is also：Due to such increment type
Encoder is contact, and signal pins must be welded on pcb board, occupies a large amount of pcb board spaces, is connect to constrain hardware
The extension of mouth.Also, the poor compatibility of such incremental encoder, all kinds of models need to mold customization, with shell knob
With being also a problem.In addition, the environment resistant pollution capacity of such incremental encoder is poor, it is easy by dust, it is greasy dirt, quiet
The pollutions such as electric dust, moisture cause electrical property bad.
Based on this, the utility model embodiment provides a kind of non-contact encoder.Illustrating above-mentioned non-contact encoder
Before specific implementation mode, the utility model embodiment first illustrates the basic principle involved by above-mentioned non-contact encoder.
Also referring to Fig. 1 and Fig. 2, coil L, peripheral components C and inductive switching chip LDC (Inductance-to-
Digital Converter) composition oscillating circuit.Inductive switching chip LDC is analog signal processing chip.Wherein, inductance turns
Change frequency of oscillation Fs of the chip LDC for detecting oscillating circuit.After the oscillating circuit generates oscillation, inductance L generates magnetic on periphery
.After metallic conductor enters the magnetic field, magnetic field intensity can be changed.Due to the variation in magnetic field, the sensibility reciprocal of coil L can be caused
With the variation of both impedances, and then the variation of frequency of oscillation F is influenced.Inductive switching chip LDC is also encoded with metallic conductor in advance
Oscillating function relationship between magnetic field position P and frequency of oscillation F.
According to above-mentioned illustrated principle, the utility model embodiment provides a kind of non-contact encoder.Also referring to
Fig. 3, Fig. 4 and Fig. 5.The non-contact encoder 300 includes：Round circuit board 31, shell (not shown) and coding circuit 32.
As shown in figure 3, round circuit board 31 is laid at least two coil groups positioned at different zones, each coil group packet
Include at least two coils.For example：One coil group includes the first induction coil 31a1 and the first reference coil 31b1, another
A coil group includes the second induction coil 31a2 and the second reference coil 31b2, all underlapped laying of any two coil.Wherein,
First induction coil 31a1 and the first reference coil 31b1 collectively constitutes input signal all the way, the second induction coil 31a2 and second
Reference coil 31b2 collectively constitutes another way input signal.
For the first induction coil 31a1 and the first reference coil 31b1, when metallic conductor is not yet close or close simultaneously
When the first induction coil 31a1 and the first reference coil 31b1, corresponding to the first induction coil 31a1 and the first reference coil 31b1
Frequency of oscillation it is all equal.It is described herein as that " metallic conductor is not yet close or simultaneously close to the first induction coil 31a1 and first
Reference coil 31b1 " is not throw into the first induction coil 31a1 and the first reference line in the projection of vertical direction by metallic conductor
31b1 is enclosed to define.However, when some coil by close to when, that is, metallic conductor the projection of vertical direction fall first induction
On coil 31a1 or the first reference coil 31b1, then, the frequency of oscillation mutation of the coil increases.
Shell is oppositely arranged with round circuit board 31 and around the central axis of round circuit board 31, and shell direction is round
The rounded bottom of circuit board 31 is provided with several metal portions.When using non-contact encoder 300, shell is as knob, user
It can be adjusted by rotational shell with realizing.In some embodiments, metal portion can be as the knob mounted on outer casing bottom
Metal dish, wherein the metal portion of knob metal dish partially replaces the bottom for being covered with shell with the insulation division of shell.User is each
When rotational shell, it can make in metal portion upright projection to round circuit board 31.Further, metal portion is in vertical direction
It can project to the coil of round circuit board 31, the coil of round circuit board 31 can also be avoided.
In further embodiments, metal portion can be directly installed on the bottom of shell, and be formed in the bottom of shell
The fanning tray of rule.
However, in the utility model embodiment, when user's rotation case, projection of the metal portion in vertical direction
It at least partly falls on any coil in any one coil group, and any one metal portion of several metal portions is in Vertical Square
To projection all do not fall in any one coil group on a remaining coil.For example：Referring again to Fig. 3, Yong Huzhuan
When dynamic shell, a metal portion falls the first induction coil 31a1 in half in the projection of vertical direction, alternatively, covering the comprehensively
One induction coil 31a1.When metal portion is when the projection of vertical direction is fallen in the first induction coil 31a1, outer casing bottom it is arbitrary
One metal portion is not all fallen in the projection of vertical direction on the first reference coil 31b1.It can similarly obtain, for second line of induction
31a2 and the second reference coil 31b2 is enclosed, above-mentioned rotation and projection rule are all followed.
In the present embodiment, if metal portion is all fallen in the first induction coil 31a1 and first simultaneously in the projection of vertical direction
When reference coil 31b1, according to Fig. 1 and operation principle shown in Fig. 2, the first induction coil 31a1 and the first reference coil 31b1
Corresponding frequency of oscillation is all equal, and coding circuit 32 does not distinguish this rotation of shell, and then fails effectively to generate
Encoded signal.
As shown in figure 4, coding circuit 32 is connect with each coil at least two coil groups, for existing in response to metal portion
Vertical direction falls the projection in every group of coil group coil, generates encoded signal.For example：As previously mentioned, when metal portion exists
The projection of vertical direction is fallen in the first reference coil 31b1, is had at this time：The frequency of oscillation Fes of first induction coil 31a1 is less than
The frequency of oscillation Frs of first reference coil 31b1, as shown in figure 5, coding circuit 32 further exports a parameter Switch A
High level.When metal portion is when the projection of vertical direction is fallen in the first induction coil 31a1, have at this time：First induction coil
The frequency of oscillation Fes of 31a1 is more than the frequency of oscillation Frs of the first reference coil 31b1, as shown in figure 5, coding circuit 32 is further
Export the low level of a parameter Switch A.The series of pulses of several parameters Switch A compositions can be used as coding letter
Number.
It can similarly obtain, for the second induction coil 31a2 and the second reference coil 31b2, it is former that above-mentioned logic can be followed
Reason, to an output parameter Switch B as shown in Figure 5.
In some embodiments, user can generate encoded signal according to product demand, self-defining coding circuit 32
Logic.
In some embodiments, which is divided into the subregions such as N, each coil cloth of each coil group
It is located in different single equal subregions, N is the positive integer more than or equal to 4.Therefore, non-contact encoder 300 can be to use
Family provides multiple step values, so as to multi-gear adjustment.
As shown in figure 3, the circle circuit board 31 is divided into 32 equal subregions, the first induction coil 31a1, the first ginseng
Coil 31b1, the second induction coil 31a2 and the second reference coil 31b2 is examined all to be separately positioned in the subregions such as single.Wherein,
It is spaced one between first induction coil 31a1 and the first reference coil 31b1 and waits subregions, the second induction coil 31a2 and second
It is spaced one between reference coil 31b2 and waits subregions.
Further, round circuit board 31 includes area pellucida and dark space, and area pellucida is that metal portion is not fallen in the projection of vertical direction
The region arrived, dark space are metal portion in the region that the projection of vertical direction is fallen on, wherein the division of area pellucida and dark space is not solid
Fixed, follow shell to carry the rotation of metal portion and change.Referring again to Fig. 3, a dark space is in round circuit board 31
In occupation of two equal subregions.
Further, above-mentioned several metal portions are uniformly arranged on rounded bottom.As shown in figure 3,8 gold are arranged in rounded bottom
Category portion, 8 metal portions are regularly spaced setting around the periphery of rounded bottom.Projection of each metal portion in vertical direction
All in occupation of two equal subregions.By using such structure setting, user can more accurately multi-gear adjustment.
Further, as previously mentioned, when metal portion is when the projection of vertical direction covers the first induction coil 31a1, the
The frequency of oscillation Fes of one induction coil 31a1 is more than the frequency of oscillation Frs of the first reference coil 31b1, and coding circuit 32 generates one
The low level of a parameter Switch A, the operation principle for other situations that details are not described herein again.
In general, in above-mentioned each embodiment, the quantity of the multiple that above-mentioned N is 4, several metal portions is N/4.It lifts
For example：Other than the case where above-mentioned N is 36, N can also be 24 or 16 or 8.Then, the quantity of corresponding metal portion according to
It is secondary that be divided into be 6,4,2.
Referring to Fig. 3.When a metal portion is fallen in the projection of vertical direction in the second reference coil 31b2, and will be outer
When shell rotates the subregional angle such as X, metal portion is fallen in the projection of vertical direction on the first reference coil 31b1 again,
In, X is positive integer.
For example：It is rotated according to the direction (that is, counterclockwise) of the second reference coil 31b2 toward the first reference coil 31b1
When shell, which is 3.As shown in figure 3, the second induction coil 31a2 and the second reference coil 31b2 are first observed, at this point, the second ginseng
It examines coil 31b2 and is located at dark space, the second induction coil 31a2 is located at area pellucida.Defined herein the second induction coil 31a2 at this time,
The state between the projection of metal portion is first state to two reference coil 31b2 respectively.
And then, when rotating counterclockwise the subregional angles such as 3, shell, observe at this time the first induction coil 31a1 with
First reference coil 31b1, the first reference coil 31b1 is located at dark space, and the first induction coil 31a1 is located at area pellucida.It is defined herein this
When the first induction coil 31a1, the first reference coil 31b1 respectively the state between the projection of metal portion be the second state.
Obviously, first state is equal to the second state.
Again for example：It is outer according to the rotation (clockwise) of the direction of the first reference coil 31b1 toward the second reference coil 31b2
When shell, which is 1.As shown in figure 3, the second induction coil 31a2 and the second reference coil 31b2 are first observed, at this point, the second reference
Coil 31b2 is located at dark space, and the second induction coil 31a2 is located at area pellucida.Defined herein the second induction coil 31a2 at this time, second
The state between the projection of metal portion is first state to reference coil 31b2 respectively.
And then, when rotating clockwise the subregional angles such as 1, shell, observe at this time the first induction coil 31a1 with
First reference coil 31b1, the first reference coil 31b1 is located at dark space, and the first induction coil 31a1 is located at area pellucida.It is defined herein this
When the first induction coil 31a1, the first reference coil 31b1 respectively the state between the projection of metal portion be the second state.
Obviously, first state is equal to the second state.
Therefore, each coil and metal portion are set according to above-mentioned rule, encoded signal can not only be generated, and it is also
It may determine that the rotation direction of shell, that is,：Judge it is clockwise with it is counterclockwise, therefore, which can be real
Existing functional diversities.
In above-mentioned each embodiment, metal portion is the metal derby of regular shape.Therefore, the design of user can be reduced
Difficulty.
In above-mentioned each embodiment, as shown in fig. 6, the coding circuit 32 includes：Inductive switching chip 321 and controller
322, controller 322 is connect with inductive switching chip 321.
Inductive switching chip 321 distinguishes each coil connection of each coil group, in vertical direction for reset coil
The oscillator signal for being stopped and generated by metal portion.For example：First reference coil 31b1 is in vertical direction by metal portion
Stop and generate oscillator signal (at this point, the first induction coil 31a1 is located at area pellucida), inductive switching chip 321 samples oscillation letter
Number.
Controller 322 is used to generate encoded signal according to oscillator signal.For example, also referring to Fig. 3 and Fig. 5.
When original state, since the first reference coil 31b1 is in area pellucida, the first induction coil 31a1 is in dark space, the second reference coil 31b2
In dark space, the second induction coil 31a2 is in area pellucida, and therefore, Switch B are high level, and Switch A are low level.
When user rotates clockwise shell so that when shell moves a decile regional perspective, the second reference coil 31b2
In dark space, the second induction coil 31a2 in area pellucida, the first reference coil 31b1 in dark space, the first induction coil 31a1 in area pellucida,
Therefore, Switch B and Switch A are all high level.
When user rotates counterclockwise shell so that when shell moves a decile regional perspective, the second reference coil 31b2
In area pellucida, the second induction coil 31a2 in dark space, the first reference coil 31b1 in dark space, the first induction coil 31a1 in dark space,
Therefore, Switch B and Switch A are all low level.
The content that those skilled in the art are instructed and guided according to the present embodiment can all push over out subsequent sequential level,
This is not repeated.
It notices：When just having started rotation case for user, clockwise under Switch B it is equal with Switch A phases,
Switch B under counterclockwise differ 90 degree with Switch A phases, and then, coding circuit 32 can judge that user rotates
The direction of shell.
In above-mentioned each embodiment, controller can be general processor, digital signal processor (DSP), special collection
It is compiled at circuit (ASIC), field programmable gate array (FPGA), microcontroller, ARM (Acorn RISC Machine) or other
Any combinations of journey logical device, discrete gate or transistor logic, discrete hardware component or these components.In addition, control
Device can also be any conventional processors, controller, microcontroller or state machine.Controller can also be implemented as computing device
Combination, for example, the combination of DSP and microprocessor, multi-microprocessor, one or more microprocessors combination DSP core or appoint
What its this configuration.
To sum up, using non-contact encoder provided in this embodiment, the space of vertical direction be it is open with it is without hindrance
Gear, therefore, realize the expansion in terms of display.
Further, as shown in fig. 7, non-contact encoder provided in this embodiment is on the basis for not changing hardware plan
On, the coil position more easily changed in the distribution and round circuit board of metal portion can directly change stepping etc.
Grade.
Further, non-contact encoder environment provided in this embodiment is adaptable, is not easily susceptible to dust, greasy dirt,
The pollutions such as ELECTROSTATIC DUST, moisture cause electrical property bad.
Further, non-contact encoder provided in this embodiment is not on the basis of changing hardware, by changing gold
The function of absolute type encoder may be implemented in the structure in category portion, and condition is created for the seriation extension of product.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement etc., should be included in the utility model made by within the spirit and principle of utility model
Protection domain within.
Claims (10)
1. a kind of non-contact encoder, which is characterized in that including：
Round circuit board, is laid at least two coil groups positioned at different zones, and each coil group includes at least two lines
Circle；
Shell is oppositely arranged with the round circuit board and surround the central axis of the round circuit board, the shell
The rounded bottom of the round circuit board is provided with several metal portions, when rotating the shell, a metal portion is being hung down
Histogram to projection at least partly fall on any coil, and any one metal portion of several metal portions is vertical
The projection in direction is not all fallen on any one remaining coil of the coil；
Coding circuit is connect with each coil at least two coil group, is used in response to metal portion in vertical direction
The projection in every group of coil group coil is fallen, encoded signal is generated.
2. non-contact encoder according to claim 1, which is characterized in that the circle circuit board is divided into N deciles
Each coil in region, each coil group is laid in different single equal subregions, and N is the positive integer more than or equal to 4.
3. non-contact encoder according to claim 2, which is characterized in that several metal portions are uniformly arranged on described
The rounded bottom of round circuit board.
4. non-contact encoder according to claim 3, which is characterized in that
The quantity of the multiple that the N is 4, several metal portions is N/4；
The circle circuit board is laid with two coil groups positioned at different zones, a coil group include the first induction coil with
First reference coil, another coil group includes the second induction coil and the second reference coil, in a metal portion in Vertical Square
To projection fall in second reference coil, and when by subregional angles such as shell rotation X, metal portion is vertical
The projection in direction is fallen again on first reference coil, wherein X is positive integer.
5. non-contact encoder according to claim 4, which is characterized in that
When rotating the shell toward the direction of first reference coil according to second reference coil, the X is 3.
6. non-contact encoder according to claim 4, which is characterized in that
When rotating the shell toward the direction of second reference coil according to first reference coil, the X is 1.
7. non-contact encoder according to claim 2, which is characterized in that the N is 32 or 24 or 16 or 8.
8. non-contact encoder according to claim 1, which is characterized in that the metal portion is the metal of regular shape
Block.
9. according to the non-contact encoder of claim 1 to 8 any one of them, which is characterized in that the coding circuit includes：
Inductive switching chip is connect with each coil of each coil group respectively, for converting the coil in vertical direction
On by the metal portion stops and generates oscillator signal；
Controller is connect with the inductive switching chip, for generating encoded signal according to the oscillator signal.
10. a kind of electronic equipment, which is characterized in that including non-contact encoder as described in any one of claim 1 to 9.
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| CN201820175554.9U CN207779418U (en) | 2018-01-31 | 2018-01-31 | A kind of non-contact encoder and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820175554.9U CN207779418U (en) | 2018-01-31 | 2018-01-31 | A kind of non-contact encoder and electronic equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108225383A (en) * | 2018-01-31 | 2018-06-29 | 深圳和而泰智能控制股份有限公司 | A kind of non-contact encoder and electronic equipment |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108225383A (en) * | 2018-01-31 | 2018-06-29 | 深圳和而泰智能控制股份有限公司 | A kind of non-contact encoder and electronic equipment |
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