CN206353033U - Determine grating and photoelectric encoder - Google Patents
Determine grating and photoelectric encoder Download PDFInfo
- Publication number
- CN206353033U CN206353033U CN201620979543.7U CN201620979543U CN206353033U CN 206353033 U CN206353033 U CN 206353033U CN 201620979543 U CN201620979543 U CN 201620979543U CN 206353033 U CN206353033 U CN 206353033U
- Authority
- CN
- China
- Prior art keywords
- code channel
- increment code
- grating
- increment
- predeterminable area
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Abstract
The utility model, which is disclosed, a kind of determines grating and photoelectric encoder, determine the second increment code channel that grating includes being arranged in predeterminable area, the predeterminable area corresponds to the first increment code channel, it is equal with the width of the first increment code channel, the second increment code channel is the stairstepping code channel divided equally in width according to preset number layer, the length away from equal to the first increment code channel between left and right of the stairstepping code channel, any two adjacent layer is default bias amount in the offset of left and right directions in the same stairstepping code channel, each layer of length is the product with the default bias amount after the preset number adds 1, the default bias amount is equal to the business that the length divided by 2 times of the preset number of the first increment code channel are obtained.The technical scheme that the utility model is provided, can be conducive to carrying out high-precision subdivision to source signal, so as to be conducive to photoelectric encoder while meeting high-resolution and the small requirement of size.
Description
Technical field
The utility model is related to Industry Control and technical field of automation, more particularly to a kind of determines grating and photoelectric coding
Device.
Background technology
Photoelectric encoder be it is a kind of integrate optics, machinery, electric angle-measuring equipment, at mechanical structure and signal
Reason circuit convert optical signals into electric signal so that realize the direct of a variety of physical quantitys such as diagonal displacement, speed and position or
Measurement indirectly.
In absolute optical encoder, each set angle in a circle can be realized by the absolute coding for moving grating
Coding is all unique.In order that photoelectric encoder meets high-resolution and the small requirement of size, it is necessary to by electronic features simultaneously
The mode divided is handled the signal collected, and the electronic fine-grained middle source signal for needing to use is electronic fine-grained foundation stone.
Wherein, the generation of source signal depends on determining the structure design of grating.
In current technology, the design for determining each increment code channel of grating uses rectangular structure, produced source letter
Number be triangular wave patterns, be unfavorable for high-precision subdivision, so as to be difficult to make photoelectric encoder while meeting high-resolution and size
Small requirement.
Utility model content
In view of this, the utility model determines grating and photoelectric encoder there is provided a kind of, can be conducive to entering source signal
The high-precision subdivision of row, so as to be conducive to photoelectric encoder while meeting high-resolution and the small requirement of size.
To achieve the above object, the utility model provides following technical scheme：
It is a kind of to determine grating, applied to photoelectric encoder, the photoelectric encoder include it is described determine grating and dynamic grating, it is described
Dynamic grating includes the first increment code channel, described to determine grating and include：
It is arranged on the second increment code channel in predeterminable area；The predeterminable area corresponds to the first increment code channel, with
The width of the first increment code channel is equal, and the second increment code channel is the rank divided equally in width according to preset number layer
Trapezoidal code channel；
The length away from equal to the first increment code channel between left and right of the stairstepping code channel, the same ladder shape code
Any two adjacent layer is default bias amount in the offset of left and right directions in road, and each layer of length adds for the preset number
Product after 1 with the default bias amount；Length of the default bias amount equal to the first increment code channel divided by 2 times of institute
State the business that preset number is obtained.
It is preferred that, vertically including the second increment code channel described in one or at least two in the predeterminable area.
It is preferred that, two the second increment code channels are being vertically included in the predeterminable area, are being wrapped in the horizontal direction
Include the second increment code channel described at least two；
The second increment code channel is distributed in the width of the perpendicular bisector and the predeterminable area by the long side of the predeterminable area
The perpendicular bisector on side intersects in the 4 sub- predeterminable areas split and formed；
Mutually in two sub- predeterminable areas diagonally, each described second incremental code in a sub- predeterminable area
The distance of horizontal direction is (2n+1) times between each described second increment code channel in road and another sub- predeterminable area
The first increment code channel length, wherein, n is natural number.
It is preferred that, it is each in a sub- predeterminable area in two vertically adjacent sub- predeterminable areas
Horizontal direction between each described second increment code channel in the individual second increment code channel and another sub- predeterminable area
Distance for the first increment code channel of (n+0.5) times length, wherein, n is natural number.
It is preferred that, level side between two the second increment code channels of arbitrary neighborhood in each described sub- predeterminable area
To distance for 2n times of the first increment code channel length, wherein, n is positive integer.
It is preferred that, the second increment code channel is according at least 2 layers stairstepping code channel divided equally in width.
It is preferred that, it is described to determine grating and also include：
The second absolute code channel corresponding with the first absolute code channel of the dynamic grating.
A kind of photoelectric encoder, including：
Determine grating described in dynamic grating and any of the above-described.
Understood via above-mentioned technical scheme, compared with prior art, the utility model determines grating and light there is provided a kind of
Photoelectric coder.What the utility model was provided determines grating, applied to including the photoelectric encoder of dynamic grating, and the dynamic grating includes the
One increment code channel, described to determine the second increment code channel that grating includes being arranged in predeterminable area, the predeterminable area corresponds to institute
State the first increment code channel, it is equal with the width of the first increment code channel, the second increment code channel be width according to
Preset number layer divide equally stairstepping code channel, wherein, the stairstepping code channel between left and right away from equal to the first increment code channel
Length, any two adjacent layer is default bias amount in the offset of left and right directions in the same stairstepping code channel, often
One layer of length is the product with the default bias amount after the preset number adds 1；The default bias amount is equal to described the
The business that the length of one increment code channel divided by 2 times of the preset number are obtained.Determine in grating the due to what the utility model was provided
The structure of two increment code channels is ladder-type structure, and each layer of equal length, so that dynamic grating is in rotary course, optical signal
The first near sinusoidal signal form for being gradually incremented by and gradually successively decreasing again can be realized through the second increment code channel described in grating is determined
The output of light quantity, and use rectangle structure due to determining the increment code channel of grating in the prior art, its realize for triangular waveform
The output of the light quantity of formula, because sinusoidal signal is substantially more beneficial for high-precision subdivision than triangular signal, therefore, this practicality is new
The technical scheme that type is provided, can be conducive to photoelectric encoder while meeting high-resolution and the small requirement of size.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is embodiment of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, also
Other accompanying drawings can be obtained according to the accompanying drawing of offer.
The structure chart of the dynamic grating for the photoelectric encoder that Fig. 1 provides for the utility model embodiment；
The part-structure figure of the dynamic grating for the photoelectric encoder that Fig. 2 provides for the utility model embodiment；
The structure chart of increment code channel in a kind of dynamic grating that Fig. 3 provides for the utility model embodiment；
A kind of structure chart for determining grating that Fig. 4 provides for the utility model embodiment；
A kind of increment code channel structure chart determined in grating that Fig. 5 provides for the utility model embodiment；
The light quantity variation diagram for the increment code channel shown in transmission Fig. 5 that Fig. 6 provides for the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belongs to the scope of the utility model protection.
To enable above-mentioned purpose of the present utility model, feature and advantage more obvious understandable, below in conjunction with the accompanying drawings and tool
Body embodiment is described in further detail to prior art and the utility model.
Embodiment
Refer to Fig. 1~Fig. 5, the structure chart of the dynamic grating for the photoelectric encoder that Fig. 1 provides for the utility model embodiment,
The part-structure figure of the dynamic grating for the photoelectric encoder that Fig. 2 provides for the utility model embodiment, Fig. 3 is implemented for the utility model
The structure chart of increment code channel in a kind of dynamic grating that example is provided, Fig. 4 a kind of determines grating for what the utility model embodiment was provided
Structure chart, a kind of increment code channel structure chart determined in grating that Fig. 5 provides for the utility model embodiment.
Refer to shown in Fig. 1~Fig. 5, what the utility model was provided determines grating, applied to photoelectric encoder, the photoelectricity is compiled
Code device determines grating and dynamic grating including described, and the dynamic grating includes the first increment code channel A (incremental codes in i.e. described dynamic grating
Road), as shown in Fig. 1~Fig. 5, this determines grating, including：
The the second increment code channel B (the i.e. described increment code channel determined in grating) being arranged in predeterminable area Area；
The predeterminable area Area corresponds to the first increment code channel A's, its width h1 and the first increment code channel A
Width h2 is equal；
Specifically, corresponding to accompanying drawing 3 and accompanying drawing 4, the distance between both sides are the width up and down.
The second increment code channel B is the stairstepping code channel divided equally in width according to preset number layer；
The stairstepping code channel between left and right away from the length a equal to the first increment code channel A, the same stairstepping
Any two adjacent layer is default bias amount in the offset of left and right directions in code channel, and each layer of length b is the present count
The product that mesh adds 1 afterwards with the default bias amount；
That is, each layer of length b is equal.
Specifically, the default bias amount is equal to the length divided by 2 times of the preset number of the first increment code channel A
Obtained business.
Specifically, the stairstepping code channel between left and right away from the vertical line and the rightmost side for referring to the stairstepping code channel leftmost side
Vertical line between lateral separation.
Optionally, the second increment code channel is according at least 2 layers stairstepping code channel divided equally in width.
Referring to Fig. 6, the light quantity change of the increment code channel shown in transmission Fig. 5 that Fig. 6 provides for the utility model embodiment
Figure.As shown in fig. 6, transverse axis represents the angle of the dynamic grating rotating, the longitudinal axis represents light quantity；Wherein, the 1 of the dynamic grating rotating
Individual unit angle be equal to 360 °/(2t × y), y is equal to 2 times of the preset number；The light quantity of 1 unit refers to the dynamic grating
The light quantity that 1 unit angle of rotation is incremented by or successively decreased, specifically, 1 unit angle of the dynamic grating rotating is to turn over
The distance of the default bias amount.By Fig. 6 it was determined that the second increment code channel shown in a Fig. 5 is in the dynamic grating
In rotary course, the change of light quantity turns to 20~0~20~0 units of light, and near sinusoidal signal.
Because the structure for determining the second increment code channel in grating that the utility model embodiment is provided is ladder-type structure, and often
One layer of equal length, so that dynamic grating is in rotary course, the second increment code channel can through determining described in grating for optical signal
The output for the light quantity for being first gradually incremented by the near sinusoidal signal form gradually successively decreased again is realized, and in the prior art due to determining grating
Increment code channel use rectangle structure, its realize the light quantity for triangular wave patterns output, because sinusoidal signal substantially compares
Triangular signal is more beneficial for high-precision subdivision, therefore, the technical scheme that the utility model embodiment is provided, and can be conducive to
Photoelectric encoder meets high-resolution and the small requirement of size simultaneously.
Optionally, what the utility model embodiment was provided determines vertically including one in grating, the predeterminable area
Or the second increment code channel B described at least two.
Optionally, what another embodiment of the utility model was provided determines vertically including in grating, the predeterminable area
Two the second increment code channel B, in the horizontal direction including the second increment code channel B described at least two；
The second increment code channel B is distributed in the width of the perpendicular bisector and the predeterminable area by the long side of the predeterminable area
The perpendicular bisector on side intersects in the 4 sub- predeterminable areas split and formed；
Mutually in two sub- predeterminable areas diagonally, each described second incremental code in a sub- predeterminable area
The distance of horizontal direction is (2n+1) between each described second increment code channel B in road B and another sub- predeterminable area
The length of the first increment code channel again, wherein, n is natural number.
Specifically, the purpose being arranged such is made in two sub- predeterminable areas mutually diagonally, a sub- preset areas
The second increment code channel B and the second increment code channel B in another sub- predeterminable area in domain is rotated in dynamic grating
When, half period is differed through the optical signal of the second increment code channel B in the two different sub- predeterminable areas, it is follow-up to facilitate
Difference is carried out to the optical signal of the second increment code channel B the two described, interference signal is eliminated.
Specifically, the corresponding anglec of rotation for assuming the first increment code channel of the dynamic grating is α, then it is described
It is the second increment code channel corresponding sinusoidal signal cycle that dynamic grating, which turns over 2 α, that is, turns over first increment
A code channel and left side is adjacent or right adjacent dark space, dark space between left and right away from the first increment code channel
Between left and right away from equal.It is understood that the quantity for assuming the first increment code channel of dynamic grating is t, then dynamic grating rotation
The angle for turning 360 °/2t is the second increment code channel corresponding sinusoidal signal cycle.
Optionally, it is assumed that vertically including two the second increment code channels in the predeterminable area
B, horizontal direction (same to a line) includes 6 the second increment code channel B, it can be assumed that 4 sub- predeterminable areas according to upper right,
The order of upper left, lower-left and bottom right is divided into 1 region, 2 regions, 3 regions and 4 regions；Then in 2 regions and 4 regions mutually diagonally,
Horizontal direction between each described second increment code channel in each described second increment code channel and 4 regions in 2 regions
Distance for the first increment code channel of (2n+1) times length, wherein, n is natural number.
Optionally, the dynamic grating includes the first absolute code channel X, corresponding, and another embodiment of the utility model is provided
Determining grating also includes：
The second absolute code channel corresponding with the first absolute code channel of the dynamic grating.
Optionally, as shown in figure 4, described determine grating altogether including 8 second absolute code channel Y.
Optionally, what another embodiment of the utility model was provided determines vertically including in grating, the predeterminable area
Two the second increment code channel B, in the horizontal direction including the second increment code channel B described at least two；
The second increment code channel B is distributed in the width of the perpendicular bisector and the predeterminable area by the long side of the predeterminable area
The perpendicular bisector on side intersects in the 4 sub- predeterminable areas split and formed；
In two vertically adjacent sub- predeterminable areas, in a sub- predeterminable area each described
The distance of horizontal direction is between each described second increment code channel in two increment code channels and another sub- predeterminable area
(n+0.5) length of the first increment code channel again, wherein, n is natural number.
Optionally, as shown in figure 4,2 regions and 3 regions are two vertically adjacent sub- predeterminable areas, 2 regions
The distance of horizontal direction between each described second increment code channel in each interior second increment code channel and 3 regions
For the length of the first increment code channel of (n+0.5) times, wherein, n is natural number.
Specifically, being arranged such second increment that purpose is the second increment code channel and 3 regions for passing through 2 regions
Optical signal difference 0.25 cycle, the i.e. pi/2 of code channel, so, to determining grating (the second increment code channel) formation through described
Sinusoidal signal when being finely divided, the position of specific subdivision sine value can be determined more accurately.If as shown in fig. 6, selection
Totally 7 points are as sampled point by C, D, E, F, G, H and I, when being combined using interpolation algorithm and absolute coding, due to identical sine
Value point (such as D and F points) uses one and same coding, now, just cannot be distinguished by the point of the two identical sine values, therefore, introduces just
Value is cut preferably to distinguish, and above-mentioned setting just can realize through 2 regions the second increment code channel and 3 regions described the
The optical signal difference pi/2 of two increment code channels, the convenient tangent value for calculating any time.The technology that i.e. application the utility model is provided
Scheme, the coding of absolute coding, the coding of tangent value and sine value can be combined, realized to source signal by interpolation algorithm
High-precision subdivision.
It is understood that being determined grating due to described and being used cooperatively with the dynamic grating, the dynamic grating is in rotary course
Middle to change the optical signal of transmission, therefore, the structure design for determining grating and the structure of the dynamic grating match, described dynamic
After the first increment code channel A of grating is determined, according to the structure of the dynamic grating, carried according still further to the utility model embodiment
The technical scheme of confession, just can obtain the utility model offer determines grating.
Optionally, what another embodiment of the utility model was provided determines vertically including in grating, the predeterminable area
Two the second increment code channel B, in the horizontal direction including the second increment code channel B described at least two；
The second increment code channel B is distributed in the width of the perpendicular bisector and the predeterminable area by the long side of the predeterminable area
The perpendicular bisector on side intersects in the 4 sub- predeterminable areas split and formed；
In each described sub- predeterminable area between two the second increment code channels of arbitrary neighborhood horizontal direction away from
From the length of the first increment code channel for 2n times, wherein, n is positive integer.
Specifically, above-mentioned purpose of design is to meet each described second increment code channel B in the same sub- predeterminable area
Complete Synchronization when receiving optical signal, i.e., it is synchronous to start to receive, it can not synchronously receive, the intensity for strengthening output optical signal.
As long as it is understood that meeting above-mentioned condition, the utility model is not intended to limit in each sub- predeterminable area
The second increment code channel B quantity.
Optionally, what another embodiment of the utility model was provided determines grating, and the second increment code channel is in width
According at least 2 layers stairstepping code channel divided equally.
Specifically, the second increment code channel shown in Fig. 5 is 4 layers of ladder code channel, it is necessary to which explanation, this practicality is newly
Type is not intended to limit the specific number of plies.
In order to more comprehensively illustrate the technical scheme that the utility model is provided, the utility model is also disclosed a kind of photoelectricity and compiled
Code device.
The photoelectric encoder that the utility model embodiment is provided, including：
Determine grating described in dynamic grating and any one above-mentioned embodiment.
It is, of course, understood that the photoelectric encoder that the utility model embodiment is provided also includes：
Structure, LED, photosensitive unit, and the signal processing circuit being connected with the photosensitive unit；
The dynamic grating, described determine grating, the LED and the photosensitive unit and be arranged on the structure.
Understood via above-mentioned technical scheme, compared with prior art, the utility model determines grating and light there is provided a kind of
Photoelectric coder.What the utility model was provided determines grating, applied to including the photoelectric encoder of dynamic grating, and the dynamic grating includes the
One increment code channel, described to determine the second increment code channel that grating includes being arranged in predeterminable area, the predeterminable area corresponds to institute
State the first increment code channel, it is equal with the width of the first increment code channel, the second increment code channel be width according to
Preset number layer divide equally stairstepping code channel, wherein, the stairstepping code channel between left and right away from equal to the first increment code channel
Length, any two adjacent layer is default bias amount in the offset of left and right directions in the same stairstepping code channel, often
One layer of length is the product with the default bias amount after the preset number adds 1；The default bias amount is equal to described the
The business that the length of one increment code channel divided by 2 times of the preset number are obtained.Determine in grating the due to what the utility model was provided
The structure of two increment code channels is ladder-type structure, and each layer of equal length, so that dynamic grating is in rotary course, optical signal
The first near sinusoidal signal form for being gradually incremented by and gradually successively decreasing again can be realized through the second increment code channel described in grating is determined
The output of light quantity, and use rectangle structure due to determining the increment code channel of grating in the prior art, its realize for triangular waveform
The output of the light quantity of formula, because sinusoidal signal is substantially more beneficial for high-precision subdivision than triangular signal, therefore, this practicality is new
The technical scheme that type is provided, can be conducive to photoelectric encoder while meeting high-resolution and the small requirement of size.
Finally, in addition it is also necessary to explanation, herein, such as first and second or the like relational terms be used merely to by
One entity or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or operation
Between there is any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant meaning
Covering including for nonexcludability, so that process, method, article or equipment including a series of key elements not only include that
A little key elements, but also other key elements including being not expressly set out, or also include be this process, method, article or
The intrinsic key element of equipment.In the absence of more restrictions, the key element limited by sentence "including a ...", is not arranged
Except also there is other identical element in the process including the key element, method, article or equipment.
The embodiment of each in this specification is described by the way of progressive, and what each embodiment was stressed is and other
Between the difference of embodiment, each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or new using this practicality
Type.A variety of modifications to these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can in other embodiments be realized in the case where not departing from spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (8)
1. a kind of determine grating, applied to photoelectric encoder, the photoelectric encoder include it is described determine grating and dynamic grating, it is described to move
Grating includes the first increment code channel, it is characterised in that described to determine grating and include：
It is arranged on the second increment code channel in predeterminable area；The predeterminable area corresponds to the first increment code channel, and described
The width of first increment code channel is equal, and the second increment code channel is the stairstepping divided equally in width according to preset number layer
Code channel；
In the length away from equal to the first increment code channel between left and right of the stairstepping code channel, the same stairstepping code channel
Any two adjacent layer is default bias amount in the offset of left and right directions, each layer of length for the preset number add 1 it
Afterwards with the product of the default bias amount；The default bias amount be equal to the first increment code channel length divided by 2 times described
The business that preset number is obtained.
2. according to claim 1 determine grating, it is characterised in that in the predeterminable area vertically include one or
Second increment code channel described in person at least two.
3. according to claim 1 determine grating, it is characterised in that is vertically including two institutes in the predeterminable area
The second increment code channel is stated, in the horizontal direction including the second increment code channel described at least two；
The second increment code channel is distributed in the broadside of the perpendicular bisector and the predeterminable area by the long side of the predeterminable area
Perpendicular bisector intersects in the 4 sub- predeterminable areas split and formed；
Mutually in two sub- predeterminable areas diagonally, each described second increment code channel in a sub- predeterminable area with
Institute of the distance of horizontal direction for (2n+1) again between each described second increment code channel in another sub- predeterminable area
The length of the first increment code channel is stated, wherein, n is natural number.
4. according to claim 3 determine grating, it is characterised in that two vertically adjacent sub- predeterminable areas
In, each described second increment code channel in a sub- predeterminable area and each in another sub- predeterminable area
The distance of horizontal direction is the length of the first increment code channel of (n+0.5) again between the second increment code channel, wherein, n
For natural number.
5. determine grating according to claim 3 or 4, it is characterised in that arbitrary neighborhood in each described sub- predeterminable area
Two the second increment code channels between horizontal direction distance for 2n times of the first increment code channel length, wherein, n
For positive integer.
6. according to claim 1 determine grating, it is characterised in that the second increment code channel is according to extremely in width
Few 2 layers of stairstepping code channel respectively.
7. according to claim 1 determine grating, it is characterised in that described to determine grating and also include：
The second absolute code channel corresponding with the first absolute code channel of the dynamic grating.
8. a kind of photoelectric encoder, it is characterised in that including：
Determine grating described in dynamic grating and any one of claim 1~7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620979543.7U CN206353033U (en) | 2016-08-29 | 2016-08-29 | Determine grating and photoelectric encoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620979543.7U CN206353033U (en) | 2016-08-29 | 2016-08-29 | Determine grating and photoelectric encoder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206353033U true CN206353033U (en) | 2017-07-25 |
Family
ID=59346879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620979543.7U Withdrawn - After Issue CN206353033U (en) | 2016-08-29 | 2016-08-29 | Determine grating and photoelectric encoder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206353033U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106248117A (en) * | 2016-08-29 | 2016-12-21 | 珠海格力节能环保制冷技术研究中心有限公司 | Determine grating and photoelectric encoder |
| CN114207384A (en) * | 2019-04-10 | 2022-03-18 | 威世半导体有限公司 | Optical encoder |
-
2016
- 2016-08-29 CN CN201620979543.7U patent/CN206353033U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106248117A (en) * | 2016-08-29 | 2016-12-21 | 珠海格力节能环保制冷技术研究中心有限公司 | Determine grating and photoelectric encoder |
| CN114207384A (en) * | 2019-04-10 | 2022-03-18 | 威世半导体有限公司 | Optical encoder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106248117B (en) | Determine grating and photoelectric encoder | |
| CN108362208A (en) | A kind of pseudorandom code channel grating scale and its read method | |
| CN103759749B (en) | Single-code-channel absolute position encoder | |
| CN206353033U (en) | Determine grating and photoelectric encoder | |
| CN102037332B (en) | Position measuring device | |
| CN103512500A (en) | Image collecting circuit of high-speed absolute grating ruler | |
| CN105424073A (en) | Incremental photoelectric encoder precision detection system | |
| CN204359326U (en) | A kind of linear grating chi | |
| CN104677394A (en) | Code and device for sensing position or angular position | |
| CN103528612A (en) | Method for increasing resolution ratio of absolute rotary encoder | |
| CN104167874A (en) | Servo motor with encoder function and position detection method of servo motor with encoder function | |
| CN104567955A (en) | Grating subdivision device and method based on FPGA | |
| CN102095378B (en) | Grating linear displacement transducer | |
| CN109029514A (en) | Gating angular displacement measuring system when single-code channel absolute type | |
| CN208282777U (en) | A kind of pseudorandom code channel grating scale | |
| CN109724519B (en) | Absolute linear displacement sensor based on decimal shift coding | |
| CN104501844A (en) | Linear grating ruler | |
| CN101984328A (en) | Single-code channel photoelectric coder | |
| CN105783715B (en) | A kind of absolute grating scale measuring device and its measurement method | |
| CN209559237U (en) | Grating and photoelectric encoder are determined for photoelectric encoder | |
| CN204388869U (en) | A kind of magneto-electric absolute value encoder | |
| CN103122984B (en) | Based on conjugate gears pair and the design method thereof of Rack | |
| CN100451558C (en) | Absolute type angular displacement sensor | |
| CN106248115B (en) | Determine grating, dynamic grating and photoelectric encoder | |
| CN204788428U (en) | Many rings of absolute encoder of magnetic induction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170725 Effective date of abandoning: 20181130 |