CN103606375B - One carries high-resolution encoded light chopper wheel - Google Patents
One carries high-resolution encoded light chopper wheel Download PDFInfo
- Publication number
- CN103606375B CN103606375B CN201310545078.7A CN201310545078A CN103606375B CN 103606375 B CN103606375 B CN 103606375B CN 201310545078 A CN201310545078 A CN 201310545078A CN 103606375 B CN103606375 B CN 103606375B
- Authority
- CN
- China
- Prior art keywords
- group
- code channel
- code
- coding
- starting point
- 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.)
- Active
Links
Landscapes
- Optical Communication System (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
One carries high-resolution encoded light chopper wheel, belongs to a kind of light modulating device related in electro-optical guidance technique field。Solve the technical problem that and be: provide one to carry high-resolution encoded light chopper wheel。The technical scheme solved, including substrate, Circular gratings, interior code channel, outer code channel。Circular gratings is positioned at the innermost circle of optical chopper。The coding of inside and outside code channel all accounts for 180 °, and the starting point of interior code channel differs 90 ° with the starting point of outer code channel。Inside and outside code channel all adopts four groups of codings, and often each pair of code plane is the straight line at equal intervals being parallel to each other after launching in group。Interior code channel starting point adopts first group, and to encode 20 right, destination county adopts second group 35 to coding, outer code channel starting point adopts first group, and to encode 25 right, destination county adopts second group 35 to coding, two code channel spaces are inserted clockwise the 3rd group 5 to the 4th group 6 to coding, two groups of coding cut-off points of these two code channel central filler of optical chopper are continuous, and guidance precision is high。
Description
Technical field
The invention belongs to the one related in electro-optical guidance technique field and carry high-resolution coding light modulating device。
Background technology
So-called optical chopper, is that the light beam in light path is encoded modulation, produces the one modulation electro-optical device of continuous modulation optical signal, is used for light guide technical field, is used widely at sciemtifec and technical sphere and industrial circle。
With the present invention closest to prior art be a patent of Changchun Shikai Science and Technology Industry Co., Ltd 2010 application, the patent No.: 20101022259525, patent name: a kind of oblique code light modulation reticle, as shown in Figure 1。Including substrate 1, Circular gratings 2, interior code channel 3, outer code channel 4。
Chromium plating on the base 1, adopts lithography corrosion technology to form Circular gratings 2, interior code channel 3 and outer code channel 4。Circular gratings 2 is positioned at the innermost circle of optical chopper, and the groove of circumference is 200 pairs。The coding range of interior code channel 3 is 180 °, is the straight line being parallel to each other, the length direction of coding and the diameter of the chopper wheel angle of cut at 45 ° after encoding chequered with black and white and planar development。The coding range of outer code channel 4 is also 180 °, is the straight line being parallel to each other, the length direction of coding and the diameter of the chopper wheel angle of cut at 45 ° after encoding chequered with black and white and planar development。The starting point of interior code channel 3 differs 90 ° with the starting point of outer code channel 4, the coding on two code channels, all adopts two groups of codings, and two groups of interior code channel 3 are encoded to 55 pairs and 75 pairs, and two groups of outer code channel 4 are encoded to 90 pairs and 110 pairs。
This coded modulation dish with per second 100 walk around speed turn clockwise time, external laser beam is incident from the starting point of interior code channel 3 and terminal outgoing from outer code channel 4, and laser beam is modulated into modulation optical signal。In spatial information field, modulation optical signal is received by laser receiver, calculates the relative coordinate at the center, relative spatial information field of laser receiver through decoding。
The subject matter that this chopper wheel exists is: the cut-off point of the modulation photoscanning code that laser receiver receives is two groups of code interface points, and aliasing easily occurs in interface point place；The quantity of coding logarithm determines that laser receiver receives the resolution of modulation light, and this chopper wheel coding logarithm is less, and resolution is low, finally affects guidance precision。
Summary of the invention
For the defect overcoming prior art to exist, present invention aims to modulation photoscanning code cut-off point continuous, overcome cut-off point aliasing, improve the resolution of modulation light, and then improve guidance precision。
The technical problem to be solved in the present invention is: provide one to carry high-resolution encoded light chopper wheel。Solve the technical scheme of technical problem as in figure 2 it is shown, include substrate 5, Circular gratings 6, interior code channel 7, outer code channel 8。Circular gratings 6 is positioned at the innermost circle of optical chopper, and the groove of circumference is 200 pairs。The coding range of interior code channel (7) accounts for 180 °, the coding range of outer code channel (8) also accounts for 180 °, the coding of interior code channel (7) ranges for 0 °～180 ° clockwise, the coding of outer code channel (8) ranges for 270 °～90 ° clockwise, and the starting point of interior code channel 7 differs 90 ° with the starting point of outer code channel 8。Interior code channel 7 adopts four groups of codings, and often in group each pair of code plane launch after straight line at equal intervals for being parallel to each other。Interior code channel 7 starting point adopts first group to encode 20 right, and from 0 ° to 18 °, code length clockwise fills up code channel, more shorter and shorter to the outside that radius is big code length clockwise from 18 ° to 90 °。The destination county of interior code channel 7 adopts second group 35 to coding, and from 180 ° to 162 °, code length counterclockwise fills up code channel, then from 162 ° to 90 °, shorter and shorter to the inner side that radius is little code length counterclockwise。First group 20 to second group of 35 diameter angle of cut at 45 ° to length direction and the optical chopper of coding, space together is defined between interior code channel 7 first groups and second group encodes, the scope in space is between 18 °～162 °, and the widest part in space is positioned at 90 °, occupies code channel。This space, road is inserted the 3rd group and the 4th group coding clockwise, the 3rd group 5 is inserted to chequered with black and white coding near the side of 20 pairs of codings, in 5 pairs of codings, the black code starting point of Article 1 is 18 °, and terminal is 90 °, and the white code starting point of the last item is 54 °, terminal is 126 °, inserting the 4th group 6 in remaining space clockwise to chequered with black and white coding, in 6 pairs of codings, the black code starting point of Article 1 is 54 °, and terminal is 126 °, the white code starting point of the last item is 90 °, and terminal is 162 °。Outer code channel 8 is also adopted by four groups of codings, and often in group each pair of code plane launch after straight line at equal intervals for being parallel to each other。Outer code channel 8 starting point adopts first group to encode 25 right, and from 270 ° to 288 °, code length clockwise fills up code channel, more shorter and shorter to the outside that radius is big code length clockwise from 288 ° to 0 °。The destination county of outer code channel 8 adopts second group 35 to coding, and from 90 ° to 72 °, code length counterclockwise fills up code channel, then from 72 ° to 0 °, shorter and shorter to the inner side that radius is little code length counterclockwise。First group 25 to second group of 35 diameter angle of cut at 45 ° to length direction and the optical chopper of coding, space together is defined outside between code channel 8 first groups and second group coding, the scope in space is between 288 °～72 °, and the widest part in space is positioned at 0 °, occupies code channel。This space, road is inserted the 3rd group and the 4th group coding, the 3rd group 5 is inserted clockwise to chequered with black and white coding near the side of 25 pairs of codings, in 5 pairs of codings, the black code starting point of Article 1 is 288 °, and terminal is 0 °, and the white code starting point of the last item is 324 °, terminal is 36 °, inserting the 4th group 6 in remaining space clockwise to chequered with black and white coding, in 6 pairs of codings, the black code starting point of Article 1 is 324 °, and terminal is 36 °, the white code starting point of the last item is 0 °, and terminal is 72 °。
Operation principle illustrates: during optical chopper work, rotate with significantly high clockwise direction, the starting point of interior code channel 7 is external laser beam entrance port, the modulation produced just is swept up and down, the terminal of outer code channel 8 is the exit portal of external laser beam, the modulation produced just left and right is swept, and scans cut-off during the starting point of two groups of central filler coding interface point that is 6 pair codings。Cut-off point consecutive variations, thus, laser receiver can process out continually varying positional information, and then improves guidance precision。One principle of selection group/cording quantity is, the difference in the cycle of the starting point modulation signal of two code channel codings suitably increases, it is easy to the determination of starting point, and the difference in cycles of adjacent two kinds of modulation signals also suitably increases, when signal deforms because of atmospheric agitation, laser receiver still can recognise that it is the code of which kind of frequency, it is ensured that guidance precision。
The positive effect of the present invention: the modulation light cut-off point that laser receiver receives is continuous, without significantly saltus step, has higher resolution, it is adaptable to guidance precision requires high laser-beam riding armament systems。
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art；
Fig. 2 is the structural representation of the present invention；
Fig. 3 be Fig. 2 code channel in filling two groups coding partial structurtes enlarged diagram。
Detailed description of the invention
The present invention presses structure shown in Fig. 2 and implements, and wherein, the material of substrate 5 adopts K9 optical glass four groups of codings in Circular gratings 6, four groups of codings of interior code channel 7 and outer code channel 8 occur through optics cold working, chrome-faced, corrosion。Interior code channel 7 both sides coding adopt 20 to 35 pairs, outer code channel 8 both sides coding adopt 25 to 35 pairs。In interior code channel 7 and outer code channel 8, two groups of filling codings are pressed structure shown in Fig. 3 and are implemented, the 3rd group of the filling of interior code channel 7 and the 4th group coding, being respectively adopted 5 pairs and 6 pairs codings that are chequered with black and white and that be parallel to each other, the 3rd group of the filling of outer code channel 8 and the 4th group coding is respectively adopted 5 pairs and 6 pairs codings that are chequered with black and white and that be parallel to each other。
Claims (1)
1. carry a high-resolution encoded light chopper wheel, including substrate (5), Circular gratings (6), interior code channel (7), outer code channel (8)；Circular gratings (6) is positioned at the innermost circle of optical chopper, and the groove of circumference is 200 pairs；The coding range of interior code channel (7) accounts for 180 °, the coding range of outer code channel (8) also accounts for 180 °, the coding of interior code channel (7) ranges for 0 °～180 ° clockwise, and the coding of outer code channel (8) ranges for 270 °～90 ° clockwise；The starting point of interior code channel (7) differs 90 ° with the starting point of outer code channel (8)；It is characterized in that interior code channel (7) adopts four groups of codings, and often in group each pair of code plane launch after straight line at equal intervals for being parallel to each other；Interior code channel (7) starting point adopts first group to encode 20 right, and from 0 ° to 18 °, code length clockwise fills up code channel, more shorter and shorter to the outside that radius is big code length clockwise from 18 ° to 90 °；The destination county of interior code channel (7) adopts second group 35 to coding, and from 180 ° to 162 °, code length counterclockwise fills up code channel, then from 162 ° to 90 °, shorter and shorter to the inner side that radius is little code length counterclockwise；First group 20 to second group of 35 diameter angle of cut at 45 ° to length direction and the optical chopper of coding, space together is defined between interior code channel 7 first groups and second group encodes, the scope in space is between 18 °～162 °, and the widest part in space is positioned at 90 °, occupies code channel；This space, road is inserted the 3rd group and the 4th group coding clockwise, the 3rd group 5 is inserted to chequered with black and white coding near the side of 20 pairs of codings, in 5 pairs of codings, the black code starting point of Article 1 is 18 °, and terminal is 90 °, and the white code starting point of the last item is 54 °, terminal is 126 °, inserting the 4th group 6 in remaining space clockwise to chequered with black and white coding, in 6 pairs of codings, the black code starting point of Article 1 is 54 °, and terminal is 126 °, the white code starting point of the last item is 90 °, and terminal is 162 °；Outer code channel (8) is also adopted by four groups of codings, and often in group each pair of code plane launch after straight line at equal intervals for being parallel to each other；Outer code channel (8) starting point adopts first group to encode 25 right, and from 270 ° to 288 °, code length clockwise fills up code channel, more shorter and shorter to the outside that radius is big code length clockwise from 288 ° to 0 °；The destination county of outer code channel (8) adopts second group 35 to coding, and from 90 ° to 72 °, code length counterclockwise fills up code channel, then from 72 ° to 0 °, shorter and shorter to the inner side that radius is little code length counterclockwise；First group 25 to second group of 35 diameter angle of cut at 45 ° to length direction and the optical chopper of coding, space together is defined outside between code channel 8 first groups and second group coding, the scope in space is between 288 °～72 °, and the widest part in space is positioned at 0 °, occupies code channel；This space, road is inserted the 3rd group and the 4th group coding, the 3rd group 5 is inserted clockwise to chequered with black and white coding near the side of 25 pairs of codings, in 5 pairs of codings, the black code starting point of Article 1 is 288 °, and terminal is 0 °, and the white code starting point of the last item is 324 °, terminal is 36 °, inserting the 4th group 6 in remaining space clockwise to chequered with black and white coding, in 6 pairs of codings, the black code starting point of Article 1 is 324 °, and terminal is 36 °, the white code starting point of the last item is 0 °, and terminal is 72 °。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310545078.7A CN103606375B (en) | 2013-11-06 | 2013-11-06 | One carries high-resolution encoded light chopper wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310545078.7A CN103606375B (en) | 2013-11-06 | 2013-11-06 | One carries high-resolution encoded light chopper wheel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103606375A CN103606375A (en) | 2014-02-26 |
| CN103606375B true CN103606375B (en) | 2016-06-22 |
Family
ID=50124594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310545078.7A Active CN103606375B (en) | 2013-11-06 | 2013-11-06 | One carries high-resolution encoded light chopper wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103606375B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113607197A (en) * | 2021-07-19 | 2021-11-05 | 西安微普光电技术有限公司 | Laser frame beam guidance coding disc and encoder |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1542404A (en) * | 2003-07-28 | 2004-11-03 | 中国科学院长春光学精密机械与物理研 | Absolute type matrix coding disk for exporting thirteen bits by utilizing three circle channels |
| CN1896693A (en) * | 2005-10-12 | 2007-01-17 | 中国科学院长春光学精密机械与物理研究所 | Absolute matrix coding disk for outputting 12-site code by precisive-code gap damaged phase |
| CN101893454A (en) * | 2010-07-14 | 2010-11-24 | 长春师凯科技产业有限责任公司 | Oblique code light modulation reticle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005300180A (en) * | 2004-04-06 | 2005-10-27 | Alps Electric Co Ltd | Angle of rotation detection device |
-
2013
- 2013-11-06 CN CN201310545078.7A patent/CN103606375B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1542404A (en) * | 2003-07-28 | 2004-11-03 | 中国科学院长春光学精密机械与物理研 | Absolute type matrix coding disk for exporting thirteen bits by utilizing three circle channels |
| CN1896693A (en) * | 2005-10-12 | 2007-01-17 | 中国科学院长春光学精密机械与物理研究所 | Absolute matrix coding disk for outputting 12-site code by precisive-code gap damaged phase |
| CN101893454A (en) * | 2010-07-14 | 2010-11-24 | 长春师凯科技产业有限责任公司 | Oblique code light modulation reticle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103606375A (en) | 2014-02-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103900489B (en) | A kind of line laser scanning three-dimensional contour measuring method and device | |
| CN102608574A (en) | Measurement device and measurement method for relative position between each two units of multiple intelligent agents | |
| CN104049255B (en) | A kind of based on code modulated laser three-D radar installations | |
| CN103606375B (en) | One carries high-resolution encoded light chopper wheel | |
| CN104467953A (en) | Space optical communication system without accuracy alignment | |
| CN101556206A (en) | System for detecting dynamic resolution of aerial camera | |
| CN105092610A (en) | Scan imaging system | |
| CN101872065B (en) | Combined raster scanning system of photoelectric shaft angle encoder | |
| CN101893454B (en) | Oblique code light modulation reticle | |
| CN204301735U (en) | A kind of novel obstacle recognition system | |
| CN108945936A (en) | A kind of positioning reverse control method of rail mounted RGV | |
| CN108801257A (en) | A kind of localization method for indoor automatic parking | |
| CN203464944U (en) | Multi ring absolute encoder applied to multi turn electric actuator | |
| CN204694274U (en) | Reflective optical encoder | |
| CN204572994U (en) | A kind of groove-shaped indexing cam mechanism of one chip applying barrel shaped roller | |
| CN103472539A (en) | Hollow optical slip ring and optical signal transmission method thereof | |
| CN103197678A (en) | Intelligent navigation system of sweeping robot | |
| CN104075742A (en) | Method for designing absolute type photoelectric encoder based on phase shift compensation technology | |
| CN103471529B (en) | Based on the High-precision small photoelectricity angle sensor of image procossing | |
| CN108196225B (en) | Three-dimensional space positioning method and system fusing coding information | |
| CN101806896B (en) | Laser ranging device using phase method | |
| CN103792598A (en) | Lens capable of achieving laser transversely-moving type coaxial linear scanning | |
| CN104079349A (en) | Ultraviolet light communication optical system | |
| CN203981189U (en) | The rotary encoder of full light formula Optical Fiber Transmission | |
| CN203432604U (en) | Digital direct-reading device of intelligent metering instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |