CN105444792A - Sine wave encoder encoding disc - Google Patents
Sine wave encoder encoding disc Download PDFInfo
- Publication number
- CN105444792A CN105444792A CN201510984874.XA CN201510984874A CN105444792A CN 105444792 A CN105444792 A CN 105444792A CN 201510984874 A CN201510984874 A CN 201510984874A CN 105444792 A CN105444792 A CN 105444792A
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- code channel
- variable code
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- 239000012780 transparent material Substances 0.000 claims description 4
- 125000002950 monocyclic group Chemical group 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 101000860173 Myxococcus xanthus C-factor Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000005329 float glass Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000005304 optical glass Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000003442 weekly effect Effects 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 relates to a sine wave encoder encoding disc. The sine wave encoder encoding disc comprises an encoding disc body; the encoding disc body is provided with a first variable code channel, a second variable code channel, a third variable code channel and a fourth variable code channel which are distributed from inside to outside; an increment code channel is arranged between the second variable code channel and the third variable code channel; a group of zero position signals is arranged between the increment code channel and the second variable code channel; the first variable code channel, the second variable channel, the third variable code channel, the fourth variable code channel and the increment code channel are arranged concentrically; the phase difference between the first variable code channel, the second variable code channel, the third variable code channel and the fourth variable code channel is 90 degrees; the first variable code channel, the second variable code channel, the third variable code channel and the fourth variable code channel are respectively provided with a single slit; the increment code channel is provided with four groups of cluster slits; and a single slit is located at the zero position signals. The precision of the encoding disc can be improved.
Description
Technical field
The present invention relates to Optical encoder field, particularly relate to a kind of sinusoidal coder code-disc.
Background technology
In this technical field of scrambler, have a lot of kinds, TR scrambler, sinusoidal coder are exactly one wherein.Sinusoidal coder also belongs to incremental encoder, sinusoidal wave analog signals when main difference is to output signal, instead of digital quantity signal.Its appearance mainly in order to meet the needs of electric field, as the feedback detecting element of motor.On the basis compared with other system, during in order to obtain better dynamic perfromance, usually sinusoidal coder can be adopted.
The sinusoidal wavelength-division two kinds that existing sinusoidal coder exports: a kind of is the sine wave signal of multicycle incremental, and another kind is monocyclic position type sine wave signals.The often circle of multicycle incremental sine wave is the grid line sine wave in n cycle, and two-way sine wave signal A and B samples and move the same grid line code channel of grating outmost turns in circle, and what reading was changed is multiply periodic increment signal.A and B is that two frequencies are equal, and phase differential is the sine wave signal of T/4, can be used for the increment size measuring circumference, can as velocity measuring and angle detecting; The sinusoidal wave often circle of monocyclic position type is that the grid line of one-period is sinusoidal wave, the sine wave signal of one-period weekly when monocyclic position type C and D signal, C signal and D signal phase difference T/4, C, D two paths of signals composition position signalling, C, D signal can be used for the absolute value parameter such as turned position, angle value measuring turning axle, also can measure the direction of rotation simultaneously.But the precision of existing sinusoidal coder can not meet the demand of some high precision industries.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of sinusoidal coder code-disc, can improve the precision of code-disc.
The technical solution adopted for the present invention to solve the technical problems is: provide a kind of sinusoidal coder code-disc, comprise code-disc body, described code-disc body is provided with the first variable code channel, the second variable code channel, ternary code channel and the 4th variable code channel that distribute from inside to outside, be provided with one article of increment code channel between described second variable code channel and ternary code channel, between described increment code channel and the second variable code channel, be provided with one group of zero signal; Described first variable code channel, the second variable code channel, ternary code channel, the 4th variable code channel and increment code channel arranged concentric, described first variable code channel, the second variable code channel, phase differential between ternary code channel and the 4th variable code channel are 90 degree; Described first variable code channel, the second variable code channel, ternary code channel and the 4th variable code channel respectively there is a single slit; Described increment code channel is provided with four cohort slits, described zero signal has a single slit.
The logical light slit of described single slit is equal with the logical light slit width of grating.
The logical light slit of described group's slit is equal with the logical light slit width of grating.
The logical light slit quantity of described group's slit is odd number.
Described code-disc body adopts transparent material to make.
Beneficial effect
Owing to have employed above-mentioned technical scheme, the present invention compared with prior art, there is following advantage and good effect: increment code channel of the present invention is provided with four cohort cracks, group's crack is adopted to carry out reading, area due to photoelectric apparatus be greater than one fan-shaped, thus reduce short-term error.The present invention utilizes four variable code channels, and the phase differential of four variable code channels is 90 degree, thus reduces error between circle.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with specific embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
Embodiments of the present invention relate to a kind of sinusoidal coder code-disc, as shown in Figure 1, comprise code-disc body, described code-disc body be provided with distribute from inside to outside the first variable code channel B1, the second variable code channel B2, ternary code channel B3 and the 4th variable code channel B4, be provided with one article of increment code channel C between described second variable code channel B2 and ternary code channel B3, between described increment code channel C and the second variable code channel B2, be provided with one group of zero signal Z; Described first variable code channel B1, the second variable code channel B2, ternary code channel B3, the 4th variable code channel B4 and increment code channel C arranged concentric, described first variable code channel B1, the second variable code channel B2, phase differential between ternary code channel B3 and the 4th variable code channel B4 are 90 degree; Described first variable code channel B1, the second variable code channel B2, ternary code channel B3 and the 4th variable code channel B4 respectively there is a single slit; Described increment code channel C is provided with four cohort slits, described zero signal Z has a single slit.
Can find according to rotation curve, although the change haggling over level and photosignal amplitude can make the position of transfer point change, if make zone of transition diminish, the variable quantity of position of conversion point will be reduced.That is, when transfer point close to zero time, the position of transfer point is also just constant.If transfer point is close to zero, so that is, at this moment the logical light slit of single slit just close to zero, but if the logical light slit of single slit is close to zero, does not so just have photosignal yet yet, therefore selects the logical light slit value of suitable single slit very important.Therefore, the logical light slit of single slit described in present embodiment is equal with the logical light slit width of grating.
The effect of group's slit is identical with single slit, in some figure places higher or code-disc radius smaller in, even if even if the logical light slit value of single slit is reached to greatest extent, the photosignal amplitude obtained is also very faint, the width increasing logical light slit is again unallowed, therefore only having the number by increasing logical light slit, the amplitude of photosignal could be improved, be thisly called as group slit with the slit that several logical light slits are combined into a group.Adopt group's slit can increase the amplitude of photosignal, on average can also fall the scoring errors of a part.Therefore, the logical light slit of the slit of group described in present embodiment is equal with the logical light slit width of grating, and the logical light slit quantity of described group's slit is odd number.
In present embodiment, code-disc adopts transparent material to make, as optical glass, float glass, organic glass, graphic arts film, transparent material etc.These materials need to reach striped degree 3B under normal conditions, bubble degree 3C, and roughness is V level.
Be not difficult to find, increment code channel of the present invention is provided with four cohort cracks, adopts group crack to carry out reading, the area due to photoelectric apparatus be greater than one fan-shaped, thus reduce short-term error.The present invention utilizes four variable code channels, and four variable code channels are 90 degree, thus reduces error between circle.
Claims (5)
1. a sinusoidal coder code-disc, comprise code-disc body, it is characterized in that, described code-disc body is provided with the first variable code channel, the second variable code channel, ternary code channel and the 4th variable code channel that distribute from inside to outside, be provided with one article of increment code channel between described second variable code channel and ternary code channel, between described increment code channel and the second variable code channel, be provided with one group of zero signal; Described first variable code channel, the second variable code channel, ternary code channel, the 4th variable code channel and increment code channel arranged concentric, described first variable code channel, the second variable code channel, phase differential between ternary code channel and the 4th variable code channel are 90 degree; Described first variable code channel, the second variable code channel, ternary code channel and the 4th variable code channel respectively there is a single slit; Described increment code channel is provided with four cohort slits, described zero signal has a single slit.
2. sinusoidal coder code-disc according to claim 1, is characterized in that, the logical light slit of described single slit is equal with the logical light slit width of grating.
3. sinusoidal coder code-disc according to claim 1, is characterized in that, the logical light slit of described group's slit is equal with the logical light slit width of grating.
4. sinusoidal coder code-disc according to claim 1, is characterized in that, the logical light slit quantity of described group's slit is odd number.
5. sinusoidal coder code-disc according to claim 1, is characterized in that, described code-disc body adopts transparent material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510984874.XA CN105444792B (en) | 2015-12-23 | A kind of sinusoidal coder code-disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510984874.XA CN105444792B (en) | 2015-12-23 | A kind of sinusoidal coder code-disc |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105444792A true CN105444792A (en) | 2016-03-30 |
| CN105444792B CN105444792B (en) | 2018-08-31 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953824A (en) * | 2016-06-08 | 2016-09-21 | 珠海格力节能环保制冷技术研究中心有限公司 | Photoelectric encoding disc and encoder |
| 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 |
| CN106248115A (en) * | 2016-09-19 | 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, dynamic grating and photoelectric encoder |
| CN108332778A (en) * | 2018-02-09 | 2018-07-27 | 滁州职业技术学院 | A kind of increment type corner metering device |
| CN114846301A (en) * | 2020-12-01 | 2022-08-02 | 深圳市速腾聚创科技有限公司 | Grating disc, Z-phase signal identification method, photoelectric encoder and laser radar |
| CN116026376A (en) * | 2023-01-05 | 2023-04-28 | 浙江锐鹰传感技术有限公司 | An Incremental Inductive Encoder and Its Zero Signal Realization Method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS608714A (en) * | 1983-06-29 | 1985-01-17 | Tamagawa Seiki Kk | Absolute position detection type optical shaft encoder |
| CN201859150U (en) * | 2010-10-19 | 2011-06-08 | 叶建丰 | Glass coding disc |
| CN102261927A (en) * | 2011-04-28 | 2011-11-30 | 南京中科天文仪器有限公司 | Single code channel grating encoder for outputting monocyclic position type sine wave signal |
| CN104614000A (en) * | 2013-11-05 | 2015-05-13 | 株式会社安川电机 | Encoder, motor with encoder, and servo system |
| CN104718434A (en) * | 2013-03-11 | 2015-06-17 | 株式会社安川电机 | Encoder, motor with encoder, and servo system |
| CN205384033U (en) * | 2015-12-23 | 2016-07-13 | 宁波微科光电有限公司 | Sinusoidal wave encoder code wheel |
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS608714A (en) * | 1983-06-29 | 1985-01-17 | Tamagawa Seiki Kk | Absolute position detection type optical shaft encoder |
| CN201859150U (en) * | 2010-10-19 | 2011-06-08 | 叶建丰 | Glass coding disc |
| CN102261927A (en) * | 2011-04-28 | 2011-11-30 | 南京中科天文仪器有限公司 | Single code channel grating encoder for outputting monocyclic position type sine wave signal |
| CN104718434A (en) * | 2013-03-11 | 2015-06-17 | 株式会社安川电机 | Encoder, motor with encoder, and servo system |
| CN104614000A (en) * | 2013-11-05 | 2015-05-13 | 株式会社安川电机 | Encoder, motor with encoder, and servo system |
| CN205384033U (en) * | 2015-12-23 | 2016-07-13 | 宁波微科光电有限公司 | Sinusoidal wave encoder code wheel |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953824A (en) * | 2016-06-08 | 2016-09-21 | 珠海格力节能环保制冷技术研究中心有限公司 | Photoelectric encoding disc and encoder |
| 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 |
| CN106248115A (en) * | 2016-09-19 | 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, dynamic grating and photoelectric encoder |
| CN108332778A (en) * | 2018-02-09 | 2018-07-27 | 滁州职业技术学院 | A kind of increment type corner metering device |
| CN114846301A (en) * | 2020-12-01 | 2022-08-02 | 深圳市速腾聚创科技有限公司 | Grating disc, Z-phase signal identification method, photoelectric encoder and laser radar |
| CN114846301B (en) * | 2020-12-01 | 2024-02-27 | 深圳市速腾聚创科技有限公司 | Grating disc, Z-phase signal identification method, photoelectric encoder and laser radar |
| CN116026376A (en) * | 2023-01-05 | 2023-04-28 | 浙江锐鹰传感技术有限公司 | An Incremental Inductive Encoder and Its Zero Signal Realization Method |
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Address after: 315800 Zhejiang city of Ningbo province Beilun Daqi Longtan Road No. 51, building 1, No. 1 Applicant after: Ningbo microscience Au Optronics Co Address before: 315800 Zhejiang city of Ningbo province Beilun Daqi Longtan Road No. 51, building 1, No. 1 Applicant before: Ningbo Weco Elevator-Optical Co., Ltd. |
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Address after: 315800 No.1, building 1, 88 daqihulin Road, Beilun District, Ningbo City, Zhejiang Province Patentee after: NINGBO WECO OPTOELECTRONICS Co.,Ltd. Address before: 315800 No.1, building 1, No.51 Longtanshan Road, Daqi, Beilun District, Ningbo City, Zhejiang Province Patentee before: NINGBO WECO OPTOELECTRONICS Co.,Ltd. |
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