CN107894244A - A kind of high-resolution photoelectric encoder - Google Patents
A kind of high-resolution photoelectric encoder Download PDFInfo
- Publication number
- CN107894244A CN107894244A CN201711439010.5A CN201711439010A CN107894244A CN 107894244 A CN107894244 A CN 107894244A CN 201711439010 A CN201711439010 A CN 201711439010A CN 107894244 A CN107894244 A CN 107894244A
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- China
- Prior art keywords
- bearing
- photoelectric encoder
- light source
- driving wheel
- coding disk
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- 238000001514 detection method Methods 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- 238000009434 installation Methods 0.000 claims description 3
- 238000003708 edge detection Methods 0.000 abstract description 7
- 239000000523 sample Substances 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 2
- 210000001367 artery Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/347—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using displacement encoding scales
- G01D5/34707—Scales; Discs, e.g. fixation, fabrication, compensation
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optical Transform (AREA)
Abstract
The invention discloses a kind of high-resolution photoelectric encoder, and it includes input shaft, encoder shell, encoder protecgulum, driving wheel, driven pulley, four bearings, driven shaft, bearing fixed mount, coding disk, light source driver module, photoelectric detection module and transmission line etc..The present invention is simple in construction, it is easy to load and unload, the gear drive link being made up of driving wheel and driven pulley is introduced between input shaft and coding disk, and the gearratio between driving wheel and driven pulley is more than 1, therefore the input shaft rotational angle corresponding to each probe unit radian at coding disk edge detection is smaller than conventional coders, the resolution ratio conventional coders of the encoder are higher.
Description
Technical field
The present invention relates to photodetection field, and in particular to a kind of high-resolution photoelectric encoder.
Background technology
Encoder is a kind of common angle measurement unit, and it is believed the angle position of rotating shaft by the detection to optical signal
Breath is converted to electric signal output, and application is quite varied.
The structure of current photoelectric encoder is mainly that a single input axle drives a coding disk, in the side of coding disk
There is light source part, opposite side has photodetecting part.Photodetecting part is by detecting the arteries and veins through the light of hole on coding disk
Jig frequency number calculates the offset of angle.As science and technology continues to develop, the resolution requirement in special industry field to encoder
More and more higher, current conventional encoder are increasingly difficult to meet to require.
The content of the invention
For problems of the prior art, it is an object of the invention to provide a kind of high-resolution photoelectric encoder,
The coder structure is simple, easy to loading and unloading, and input shaft rotational angle is completed on driven shaft by a gear drive link
Multiplication, realize that high-resolution detects.
To achieve the above object, the present invention uses following technical scheme：
A kind of high-resolution photoelectric encoder, the photoelectric encoder include input shaft, and the input shaft is arranged on first
On bearing and second bearing, the clutch shaft bearing is arranged on the front shroud of photoelectric encoder, and the second bearing is arranged on light
In the shell of photoelectric coder；Driving wheel is provided with input shaft, the driving wheel is engaged with driven pulley, and the driven pulley is arranged on
On driven shaft, the both ends of the driven shaft are separately mounted in 3rd bearing and fourth bearing, and the 3rd bearing is arranged on light
On the front shroud of photoelectric coder, the fourth bearing is arranged on the bearing fixed mount in the shell of photoelectric encoder；Driven shaft
On be provided with coding disk, be respectively arranged with light source driver module in the shell below the coding disk, at left and right sides of coding disk
And photoelectric detection module；The light source driver module includes light source driving circuit plate and LED light source, the light source driving circuit plate
In hardware circuit drive the LED light source to send stabilized light source, and along the cylindrical hole vertical irradiation coding disk in shell；Institute
Stating photoelectric detection module includes photodetection circuit and photodetection diode, wherein the photodetection diode detection through
The light of notch on coding disk, and be converted into electric signal and be transmitted to the photodetection circuit, the circuit is by being calculated through
The number of electric signal pulse corresponding to the light of notch calculates the rotational angle of input shaft, and will be carried and calculated by transmission line
As a result electric signal outflow.
Further, the radius of the driving wheel is more than the gearratio of the radius, i.e. driving wheel and driven pulley of the driven pulley
More than 1.
Further, the gearratio of the driving wheel and the driven pulley is 1.4.
Further, the shell of the photoelectric encoder is the cylindrical or long hexahedron available for installation bearing fixed mount
Housing.
The present invention has following advantageous effects：
The present invention is simple in construction, is easy to load and unload, is introduced between input shaft and coding disk by driving wheel and driven pulley structure
Into gear drive link, and the gearratio between driving wheel and driven pulley is more than 1, therefore each spy at coding disk edge detection
The input shaft rotational angle surveyed corresponding to unit radian is smaller than conventional coders, the resolution ratio conventional coders of the encoder
It is higher.
Brief description of the drawings
Fig. 1 is the cross-sectional view of high-resolution photoelectric encoder of the embodiment of the present invention；
In figure：1- input shafts；2- encoder shells；3- encoder protecgulums；4- clutch shaft bearings；5- second bearings；The main teeth of 6-
Wheel；7- driven shafts；8- bearing fixed mounts；9- 3rd bearings；10- fourth bearings；11- driven pulleys；12- coding disks；13- light sources
Drive module；14- photoelectric detection modules；15- transmission lines.
Embodiment
Below, refer to the attached drawing, the present invention is more fully illustrated, shown in the drawings of the exemplary implementation of the present invention
Example.However, the present invention can be presented as a variety of multi-forms, it is not construed as being confined to the exemplary implementation described here
Example.And these embodiments are to provide, so that the present invention is fully and completely, and it will fully convey the scope of the invention to this
The those of ordinary skill in field.
As shown in figure 1, the invention provides a kind of high-resolution photoelectric encoder, the photoelectric encoder includes input shaft 1,
Input shaft 1 is arranged on clutch shaft bearing 4 and second bearing 5, and clutch shaft bearing 4 is arranged on the front shroud 3 of photoelectric encoder, and second
Bearing 5 is arranged in the shell 2 of photoelectric encoder；Driving wheel 6 is provided with input shaft 1, driving wheel 6 engages with driven pulley 11,
Driven pulley 11 is arranged on driven shaft 7, and the both ends of driven shaft 7 are separately mounted in 3rd bearing 9 and fourth bearing 10, the 3rd axle
Hold 9 to be arranged on the front shroud 3 of photoelectric encoder, the bearing that fourth bearing 10 is arranged in the shell 2 of photoelectric encoder is fixed
On frame 8；It is provided with coding disk 12 on driven shaft 7, in the shell 2 of the lower section of coding disk 12, the left and right sides of coding disk 12 sets respectively
It is equipped with light source driver module 13 and photoelectric detection module 14；Light source driver module 13 includes light source driving circuit plate and LED light
Source, the hardware circuit driving LED light source in light source driving circuit plate send stabilized light source, and vertical along the cylindrical hole in shell
Irradiate coding disk 12；Photoelectric detection module 14 includes photodetection circuit and photodetection diode, the wherein pole of photodetection two
Pipe detects the light through notch on coding disk 12, and is converted into electric signal and is transmitted to photodetection circuit, and the circuit passes through
The number for the electric signal pulse being calculated through corresponding to the light of notch calculates the rotational angle of input shaft 1, and by transmission line
Electric signal with result of calculation is spread out of.
The radius of driving wheel is more than the radius of the driven pulley, i.e. the gearratio of driving wheel and driven pulley is more than 1.It is preferred that
The gearratio of ground, driving wheel and driven pulley is 1.4.
The shell of photoelectric encoder is the cylindrical or long hexahedron housing available for installation bearing fixed mount.
The course of work of the present invention is as follows：
Input shaft 1 is driven and is fixed on driving wheel 6 on itself with same angular velocity together by the moment of torsion of left hand external
Rotate, and driving wheel 6 engages with driven pulley 11 and rotates driven pulley 11, if the radius of driving wheel 6 and driven pulley 11 is respectively
R1And R2, then the rotational angle α of driven pulley 112Gearratio R of the size between driving wheel 6 and driven pulley 111/R2With input shaft 6
Rotational angle α1Product, driven pulley 11 is fixed on driven shaft 7, drives driven shaft 7 to rotate same angular by driven pulley 11
Spend α2, and coding disk 12 is also secured on driven shaft 7, and equal angular α is rotated with driven shaft 72, therefore at the edge detection of coding disk 12
Corresponding rotation radian Rad sizes are angle [alpha]2With the radius R of coding disk 123Product, i.e. the rotational angle α of input shaft 11With volume
The radius R of code-disc 123Product multiplied by the gearratio R between driving wheel 6 and driven pulley 111/R2(namely Rad=α1R3R1/R2),
There is the notch of angularly circumference array, there is light source driver module 13 its side, and light source driver module 13 wraps on coding disk 12
Plate containing light source driving circuit and LED light source, the hardware circuit driving LED light source in light source driving circuit plate send stabilized light source,
And along the cylindrical hole vertical irradiation coding disk on shell, and the opposite side of coding disk 12 is photoelectric detection module 14, photoelectricity is visited
Survey module 14 and include photodetection circuit and photodetection diode, wherein the detectable notch that passes through of photodetection diode
Light, and be converted into electric signal and be transmitted to photodetection circuit, the circuit can be by being calculated through corresponding to the light of notch
The number of electric signal pulse obtains the rotational angle α of input shaft 11, and by transmission line 15 by the electric signal with result of calculation
Outflow.
Radian is rotated at the coding disk edge detection of known conventional coders as input shaft rotational angle and coding disk half
The product in footpath, in contrast, if in the present invention driving wheel 6 radius R1Equal to the radius R of driven pulley 112, then coding disk side
Edge detection place rotates radian Rad=α1R3, the resolution ratio of this and conventional coders do not have difference, but main actually in the present invention
The radius R of driving wheel 61Than the radius R of driven pulley 112Greatly, then the gearratio R between driving wheel 6 and driven pulley 111/R2More than 1, therefore
Rotation radian Rad sizableness at the edge detection of the coding disk 12 then rotational angle α of driving shaft 11With the radius R of coding disk 123
Product multiplied by with one be more than 1 coefficients R1/R2, conversely, each probe unit radian Rad ' at coding disk edge detection
The corresponding rotational angle α of input shaft 11'=Rad '/R3·R1/R2, (probe unit arc of the invention smaller than conventional coders
It is identical with conventional coders to spend Rad '), therefore the resolution ratio conventional coders of the encoder are higher.
It is described above simply to illustrate that of the invention, it is understood that the invention is not limited in above example, meets
The various variants of inventive concept are within protection scope of the present invention.
Claims (4)
1. a kind of high-resolution photoelectric encoder, it is characterised in that the photoelectric encoder includes input shaft, the input shaft peace
On clutch shaft bearing and second bearing, the clutch shaft bearing is arranged on the front shroud of photoelectric encoder, the second bearing
In the shell of photoelectric encoder；Driving wheel is provided with input shaft, the driving wheel engages with driven pulley, described driven
Wheel is arranged on driven shaft, and the both ends of the driven shaft are separately mounted in 3rd bearing and fourth bearing, the 3rd bearing
On the front shroud of photoelectric encoder, the fourth bearing is arranged on the bearing fixed mount in the shell of photoelectric encoder
On；It is provided with coding disk on driven shaft, light source is respectively arranged with the shell below the coding disk, at left and right sides of coding disk
Drive module and photoelectric detection module；The light source driver module includes light source driving circuit plate and LED light source, and the light source drives
Hardware circuit in dynamic circuit board drives the LED light source to send stabilized light source, and along the cylindrical hole vertical irradiation in shell
Coding disk；The photoelectric detection module includes photodetection circuit and photodetection diode, wherein the pole of the photodetection two
Pipe detects the light through notch on coding disk, and is converted into electric signal and is transmitted to the photodetection circuit, and the circuit leads to
Cross and be calculated through the number of the electric signal pulse corresponding to the light of notch and calculate the rotational angle of input shaft, and by transmission line
Electric signal with result of calculation is spread out of.
2. high-resolution photoelectric encoder according to claim 1, it is characterised in that the radius of the driving wheel is more than institute
The radius of driven pulley is stated, i.e. the gearratio of driving wheel and driven pulley is more than 1.
3. high-resolution photoelectric encoder according to claim 2, it is characterised in that the driving wheel and the driven pulley
Gearratio be 1.4.
4. high-resolution photoelectric encoder according to claim 1, it is characterised in that the shell of the photoelectric encoder is
Cylindrical or long hexahedron housing available for installation bearing fixed mount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711439010.5A CN107894244A (en) | 2017-12-27 | 2017-12-27 | A kind of high-resolution photoelectric encoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711439010.5A CN107894244A (en) | 2017-12-27 | 2017-12-27 | A kind of high-resolution photoelectric encoder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107894244A true CN107894244A (en) | 2018-04-10 |
Family
ID=61808763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711439010.5A Pending CN107894244A (en) | 2017-12-27 | 2017-12-27 | A kind of high-resolution photoelectric encoder |
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| Country | Link |
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| CN (1) | CN107894244A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111486811A (en) * | 2019-01-25 | 2020-08-04 | 科沃斯机器人股份有限公司 | Distance measurement module, distance measurement method thereof and cleaning robot |
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|---|---|---|---|---|
| CN2685827Y (en) * | 2004-03-25 | 2005-03-16 | 上海精浦机电有限公司 | Apparatus for changing absolute single-turn photoelectric coder to absolute multi-turn photoelectric coder |
| CN1731099A (en) * | 2004-09-27 | 2006-02-08 | 中国科学院长春光学精密机械与物理研究所 | The circle scrambler is surveyed in a kind of absolute type three-shaft linkage angle measurement |
| CN103644864A (en) * | 2013-12-17 | 2014-03-19 | 广东工业大学 | Machinery device for improving resolution of angle encoder and measurement precision |
| CN203908568U (en) * | 2014-05-28 | 2014-10-29 | 韦瑞峯 | Reading device of mechanical counter wheel and remote metering device |
| CN204373674U (en) * | 2015-01-08 | 2015-06-03 | 佛山轻子精密测控技术有限公司 | A kind of photoresistance scrambler based on machinery segmentation |
| CN206740152U (en) * | 2017-03-27 | 2017-12-12 | 广州林茨机电科技有限公司 | A kind of track traffic high precision photoelectric encoder |
-
2017
- 2017-12-27 CN CN201711439010.5A patent/CN107894244A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2685827Y (en) * | 2004-03-25 | 2005-03-16 | 上海精浦机电有限公司 | Apparatus for changing absolute single-turn photoelectric coder to absolute multi-turn photoelectric coder |
| CN1731099A (en) * | 2004-09-27 | 2006-02-08 | 中国科学院长春光学精密机械与物理研究所 | The circle scrambler is surveyed in a kind of absolute type three-shaft linkage angle measurement |
| CN103644864A (en) * | 2013-12-17 | 2014-03-19 | 广东工业大学 | Machinery device for improving resolution of angle encoder and measurement precision |
| CN203908568U (en) * | 2014-05-28 | 2014-10-29 | 韦瑞峯 | Reading device of mechanical counter wheel and remote metering device |
| CN204373674U (en) * | 2015-01-08 | 2015-06-03 | 佛山轻子精密测控技术有限公司 | A kind of photoresistance scrambler based on machinery segmentation |
| CN206740152U (en) * | 2017-03-27 | 2017-12-12 | 广州林茨机电科技有限公司 | A kind of track traffic high precision photoelectric encoder |
Non-Patent Citations (1)
| Title |
|---|
| 康拉德莱夫: "《汽车工程手册》", 31 January 2016 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111486811A (en) * | 2019-01-25 | 2020-08-04 | 科沃斯机器人股份有限公司 | Distance measurement module, distance measurement method thereof and cleaning robot |
| CN111486811B (en) * | 2019-01-25 | 2022-01-18 | 科沃斯机器人股份有限公司 | Distance measurement module, distance measurement method thereof and cleaning robot |
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Application publication date: 20180410 |
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| RJ01 | Rejection of invention patent application after publication |