CN205384035U - Absolute value encoder code wheel - Google Patents
Absolute value encoder code wheel Download PDFInfo
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- CN205384035U CN205384035U CN201521088142.4U CN201521088142U CN205384035U CN 205384035 U CN205384035 U CN 205384035U CN 201521088142 U CN201521088142 U CN 201521088142U CN 205384035 U CN205384035 U CN 205384035U
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- absolute value
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Abstract
The utility model relates to an absolute value encoder code wheel, including the code wheel body, be equipped with on the code wheel body and say and ji quan by logical light ring, the primary key of interior and outer distribution, it arranges with one heart to lead to light ring, primary key way and ji quan, the total N strip code channel of primary key way, N strip code channel outside -in distribute in proper order, and the sign indicating number band number volume of code channel decreases progressively in proper order, and a sign indicating number band number volume between two adjacent code channels is poor to be 2 times. The utility model discloses can improve the precision of code wheel.
Description
Technical field
This utility model relates to Optical encoder field, particularly relates to a kind of absolute value encoder code-disc.
Background technology
Encoder is a kind of device angular displacement or straight-line displacement being converted to the signal of telecommunication.The former is called code-disc, and the latter claims yardstick.Can be divided into contact and contactless two kinds according to playback mode encoder, contact adopts brush output, and a brush contact conduction region or insulation layer represent that the state of code is " 1 " or " 0 "；The contactless sensing element that accepts is light-sensitive element or magneto sensor, adopts and represents that the state of code is " 1 " or " 0 " with transparent area and light tight district during light-sensitive element.
During absolute value encoder axle rotator, have and export with position code one to one (binary system, binary-coded decimal etc.), both forward and reverse directions and displacement location can be differentiated from the change of code size, without direction judgment circuit.It has an absolute zero position code, when having a power failure or after shutdown, start remeasures again, still can read power failure or ground, shutdown position code exactly, and correctly find zero-bit code.Generally the measurement of absolute value encoder ranges for 0～360 degree, but special type also can realize multi-turn and measure.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of absolute value encoder code-disc, it is possible to increase the precision of code-disc.
This utility model solves its technical problem and be the technical scheme is that a kind of absolute value encoder code-disc of offer, and including code-disc body, described code-disc body is provided with the logical aperture, primary key road and the Ji Quan that are distributed from inside to outside；Described logical aperture, primary key road and base circle arranged concentric；Described primary key road has N bar code channel, and described N bar code channel ecto-entad is sequentially distributed, and the code band quantity of code channel is successively decreased successively, and the code band quantity difference between adjacent two code channels is 2 times.
In described N bar code channel, the code band number of outermost code channel is 2N, the code band number of inner side code channel is 1.
Described primary key road is divided into thick code channel and essence code channel, and described thick code channel is made up of four code channels in the middle of code-disc body, remaining code channel composition described essence code channel.
Described Ji Quan is arranged on the position of the outermost edges of code-disc body.
Described code-disc body adopts transparent material to make.
Beneficial effect
Owing to have employed above-mentioned technical scheme, this utility model is compared with prior art, have the following advantages that and good effect: primary key road of the present utility model adopts Gray code (cyclic binary code) to design carry logic, guarantee only have one-bit digital to change when the adjacent code system conversion of each two, ensure that the complete machine monotropic function characteristic in whole range interval and minimum probability of error.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with specific embodiment, this utility model is expanded on further.Should be understood that these embodiments are merely to illustrate this utility model rather than limit scope of the present utility model.In addition, it is to be understood that after having read the content that this utility model is lectured, this utility model can be made various changes or modifications by those skilled in the art, and these equivalent form of values fall within the application appended claims limited range equally.
Embodiment of the present utility model relates to a kind of absolute value encoder code-disc, as it is shown in figure 1, include code-disc body 4, described code-disc body 4 is provided with the logical aperture 3, primary key road 1 and the base circle 2 that are distributed from inside to outside；Described logical aperture 3, primary key road 1 and base circle arranged concentric；Described primary key road 1 has N bar code channel, and described N bar code channel ecto-entad is sequentially distributed, and the code of code channel is with 11 quantity to successively decrease successively, and the code between adjacent two code channels is with 11 quantity differences to be 2 times.Wherein, in described N bar code channel, code band 11 number of outermost code channel is 2N, code band 11 number of inner side code channel is 1, and the code of such code channel is with 11 quantity ecto-entads to be 2 successivelyN, 2N-1, 2N-2... 22, 21, 1, such that it is able to avoid the generation of gross error.
Described primary key road 1 is divided into thick code channel and essence code channel, and described thick code channel is made up of four code channels in the middle of code-disc body, remaining code channel composition described essence code channel.It is to say, be 2 by code band number3, 22, 21, the code channel thick code channel of composition of 1, the code channel composition essence code channel of residue outer ring, this aligning method is easy to adopt wide straight slit, and the error in the precision caused because of factors such as bias can be corrected by the smart code channel of periphery.
Described base circle 2 is arranged on the position of the outermost edges of code-disc body 4.The outermost edges that base circle 2 is arranged in code-disc body can ensure that the rotation error that can reduce frame for movement in the debuging process to greatest extent impact on the not concentric error of grating pattern.
In present embodiment, code-disc adopts transparent material to make, such as optical glass, float glass, lucite, graphic arts film, transparent material etc..These materials need to reach striped degree 3B, bubble degree 3C under normal conditions, and roughness is V level.
Primary key road of the present utility model adopts Gray code (cyclic binary code) to design carry logic, guarantee only have one-bit digital to change when the adjacent code system conversion of each two, ensure that the complete machine monotropic function characteristic in whole range interval and minimum probability of error.
Claims (5)
1. an absolute value encoder code-disc, including code-disc body (4), it is characterised in that described code-disc body (4) is provided with the logical aperture (3), primary key road (1) and the Ji Quan (2) that are distributed from inside to outside；Described logical aperture (3), primary key road (1) and Ji Quan (2) arranged concentric；Described primary key road (1) has N bar code channel, and described N bar code channel ecto-entad is sequentially distributed, and code band (11) quantity of code channel is successively decreased successively, and code band (11) the quantity difference between adjacent two code channels is 2 times.
2. absolute value encoder code-disc according to claim 1, it is characterised in that in described N bar code channel, code band (11) number of outermost code channel is 2N, code band (11) number of inner side code channel is 1.
3. absolute value encoder code-disc according to claim 1, it is characterized in that, described primary key road (1) is divided into thick code channel and essence code channel, and described thick code channel is made up of four code channels in the middle of code-disc body (4), remaining code channel composition described essence code channel.
4. absolute value encoder code-disc according to claim 1, it is characterised in that described Ji Quan (2) is arranged on the position of the outermost edges of code-disc body.
5. absolute value encoder code-disc according to claim 1, it is characterised in that described code-disc body (4) adopts transparent material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521088142.4U CN205384035U (en) | 2015-12-23 | 2015-12-23 | Absolute value encoder code wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521088142.4U CN205384035U (en) | 2015-12-23 | 2015-12-23 | Absolute value encoder code wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205384035U true CN205384035U (en) | 2016-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521088142.4U Expired - Fee Related CN205384035U (en) | 2015-12-23 | 2015-12-23 | Absolute value encoder code wheel |
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| CN (1) | CN205384035U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106525090A (en) * | 2016-12-30 | 2017-03-22 | 横川机器人（深圳）有限公司 | Incremental coded disk with single-turn absolute value torque motor |
| CN106989763A (en) * | 2017-03-31 | 2017-07-28 | 中国科学院长春光学精密机械与物理研究所 | A kind of absolute grating code-disc of image-type photoelectric encoder |
| CN107830819A (en) * | 2017-09-28 | 2018-03-23 | 中国科学院长春光学精密机械与物理研究所 | High-precision angular errors demarcation dish and calibration system with identification groove |
| CN108716927A (en) * | 2018-06-29 | 2018-10-30 | 广东工业大学 | A kind of image-type photoelectric encoder and its grating encoder |
| CN109470279A (en) * | 2019-01-02 | 2019-03-15 | 宝鸡文理学院 | Absolute code coder and its coding method |
| CN110686712A (en) * | 2019-11-22 | 2020-01-14 | 中国科学院长春光学精密机械与物理研究所 | Reflective image photoelectric encoder |
-
2015
- 2015-12-23 CN CN201521088142.4U patent/CN205384035U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106525090A (en) * | 2016-12-30 | 2017-03-22 | 横川机器人（深圳）有限公司 | Incremental coded disk with single-turn absolute value torque motor |
| CN106525090B (en) * | 2016-12-30 | 2019-05-31 | 横川机器人（深圳）有限公司 | A kind of band individual pen absolute value forces torque motor increment type coding disk |
| CN106989763A (en) * | 2017-03-31 | 2017-07-28 | 中国科学院长春光学精密机械与物理研究所 | A kind of absolute grating code-disc of image-type photoelectric encoder |
| CN107830819A (en) * | 2017-09-28 | 2018-03-23 | 中国科学院长春光学精密机械与物理研究所 | High-precision angular errors demarcation dish and calibration system with identification groove |
| CN108716927A (en) * | 2018-06-29 | 2018-10-30 | 广东工业大学 | A kind of image-type photoelectric encoder and its grating encoder |
| CN108716927B (en) * | 2018-06-29 | 2020-11-13 | 广东工业大学 | Image type photoelectric encoder and grating code disc thereof |
| CN109470279A (en) * | 2019-01-02 | 2019-03-15 | 宝鸡文理学院 | Absolute code coder and its coding method |
| CN109470279B (en) * | 2019-01-02 | 2024-05-07 | 宝鸡文理学院 | Absolute code encoder and encoding method thereof |
| CN110686712A (en) * | 2019-11-22 | 2020-01-14 | 中国科学院长春光学精密机械与物理研究所 | Reflective image photoelectric encoder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160713 Termination date: 20171223 |
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| CF01 | Termination of patent right due to non-payment of annual fee |