CN112857411A - Rotary encoder based on electrofluid jet printing light-emitting code channel and measuring method thereof - Google Patents
Rotary encoder based on electrofluid jet printing light-emitting code channel and measuring method thereof Download PDFInfo
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- CN112857411A CN112857411A CN202110052952.8A CN202110052952A CN112857411A CN 112857411 A CN112857411 A CN 112857411A CN 202110052952 A CN202110052952 A CN 202110052952A CN 112857411 A CN112857411 A CN 112857411A
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000012545 processing Methods 0.000 claims abstract description 17
- 238000006073 displacement reaction Methods 0.000 claims description 13
- 238000001228 spectrum Methods 0.000 claims description 13
- 230000003287 optical effect Effects 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 4
- 230000002688 persistence Effects 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 3
- 239000002096 quantum dot Substances 0.000 description 2
- 239000003086 colorant Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005401 electroluminescence Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000005424 photoluminescence Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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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
- G01D5/264—Mechanical constructional elements therefor ; Mechanical adjustment thereof
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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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/36—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light
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Abstract
The invention relates to the technical field of rotary encoders, in particular to a rotary encoder based on electrofluid jet printing light-emitting code channels and a measuring method thereof, and the technical scheme is as follows: comprises a rotating shaft; the coded disc is fixedly sleeved on the outer side surface of the rotating shaft; the luminous code channel is circumferentially arranged on the outer side face of the code wheel; the photoelectric sensor is arranged on one side of the light-emitting code channel; the lens group is arranged between the light-emitting code channel and the photoelectric sensor; and the high-speed signal processing module is electrically connected with the photoelectric sensor. The invention has the advantages of high measurement precision, easy reading and reliable work.
Description
Technical Field
The invention relates to the technical field of rotary encoders, in particular to a rotary encoder based on electrofluid jet printing light-emitting code channels and a measuring method thereof.
Background
Currently, the rotary encoders generally used in the market are classified into absolute rotary encoders and incremental rotary encoders according to the classification of the code channels. Each position of the absolute encoder corresponds to a determined digital code, parallel light rays are emitted by a photoelectric emission sensor (a light source) to penetrate through grids with alternate light and dark to obtain optical displacement information between the grids, the displacement information is received by a photoelectric receiving device sensor, and after the displacement information is received, the digital code of the termination position is determined through calculation, so that the position information of the rotary encoder can be determined. The incremental encoder obtains the optical displacement information between grids by emitting parallel light rays through a light and dark grid by a photoelectric emitting sensor (light source), then a photoelectric receiving sensor receives the optical signal to convert the displacement into a periodic electric signal, and then the electric signal is converted into counting pulses, and the size of the displacement is represented by the number of the pulses.
Above-mentioned two kinds of traditional rotary encoder all need stable light source system to support whole measurement process, simultaneously, because the code track grid line interval has reached the technological limit of certain numerical value, so under the prerequisite that original optical structure does not take place great change, traditional photoelectric rotary encoder's work receives the restriction of factors such as light path structure and signal detection scanning frequency, realizes that high speed and high accuracy displacement measurement are very difficult.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the rotary encoder based on the electrofluid jet printing light-emitting code channel and the measuring method thereof, and the rotary encoder has the advantages of high measuring precision, easy reading and reliable work.
The technical purpose of the invention is realized by the following technical scheme, and the rotary encoder based on the electrofluid jet printing light-emitting code channel comprises:
a rotating shaft;
the coded disc is fixedly sleeved on the outer side surface of the rotating shaft;
the luminous code channel is circumferentially arranged on the outer side face of the code wheel;
the photoelectric sensor is arranged on one side of the light-emitting code channel;
the lens group is arranged between the light-emitting code channel and the photoelectric sensor;
and the high-speed signal processing module is electrically connected with the photoelectric sensor.
In one embodiment, the incremental light-emitting code channel is circumferentially arranged on the outer side face of the code disc;
the absolute luminous code channel is circumferentially arranged on the outer side surface of the coded disc;
the incremental light-emitting code channel and the absolute light-emitting code channel are arranged at intervals, and the incremental light-emitting code channel is positioned above the absolute light-emitting code channel.
In one embodiment, a first grid group is arranged on the outer side surface of the incremental light-emitting code channel, each grid in the first grid group is uniformly distributed, and the first grid group is arranged in an electrofluid jet printing mode.
In one embodiment, the grids in the first grid set are divided into a red grid, a green grid, and a blue grid.
In one embodiment, a second grid group is arranged on the outer side surface of the absolute type light-emitting code channel, each grid in the second grid group is randomly distributed, and the second grid group is arranged in an electrofluid jet printing mode.
By the technical scheme, the light source is directly omitted, and the traditional light source is replaced by the luminous code channel printed by the electro-fluid jet printing, so that the photosensitive intensity of the reading head is improved, the structure of the reading head is greatly simplified, and the reliability is improved; the quantum dots sprayed and printed by the electrofluid can reach deep submicron size, submicron code channel grid lines can be constructed, and the grid spacing limit is broken through, so that the measurement precision of the rotary encoder is improved, and nanoscale measurement is realized; the light-emitting code channel has an ultra-low work number and low light-emitting power consumption.
The invention also provides a measuring method of the rotary encoder based on the electrofluid jet printing light-emitting code channel, which comprises the following steps:
electrically connecting the high-speed signal processing module to a digital display meter;
adjusting the rotary encoder to rotate in a low-speed mode, and when the code disc rotates along with the rotating shaft, reading a photoelectric quantity analog signal which is amplified by the lens group and is emitted after the absolute luminous code track rotates by the photoelectric sensor to obtain a digital code of a determined position;
and then measuring the incremental light-emitting code channel on the basis of the absolute light-emitting code channel position information, continuously using the photoelectric sensor to receive the optical analog signal of the displacement, processing the read analog signal through the high-speed signal processing module to finish the information conversion processing from the analog signal to the digital signal and then to the photoelectric position information, and finally transmitting the final photoelectric position information to an interface of a digital display meter through an interface to finish the reading of the diagonal displacement information.
In one embodiment, the method further comprises the following steps:
adjust rotary encoder and rotate under high-speed mode, white light luminance spectrum that the red, green, blue three-colour grid of luminous code track is constituteed under the different rotational speeds of accessible photoelectric sensor discernment, thereby confirm rotary encoder's rotational speed, under rotary encoder's high-speed rotation, because the existence of persistence of vision effect, can collect the data of the white light luminance spectrum that the red, green, blue three-colour grid is constituteed on the incremental luminous code track, confirm its and rotary encoder's relation between the rotational speed, thereby establish the function of white light luminance spectrum and rotational speed, the white light luminance spectrum through the luminous code track of matching finally obtains corresponding rotational speed.
Drawings
FIG. 1 is a schematic structural diagram of a rotary encoder in the present embodiment;
FIG. 2 is a schematic distribution diagram of the first grid set in the present embodiment;
fig. 3 is a schematic distribution diagram of the second grid set in the present embodiment.
In the figure: 1. a rotating shaft; 2. code disc; 3. a light-emitting code channel; 31. incremental light emitting code channels; 32. absolute light-emitting code channels; 4. a lens group; 5. a photosensor; 6. a high-speed signal processing module; 7. a digital display meter; 8. a first grid set; 9. a second grid set.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
As shown in fig. 1, a rotary encoder based on electrofluid jet printing of a light-emitting code channel comprises a rotary shaft 1, a code disc 2, a light-emitting code channel 3, a photoelectric sensor 5, a lens group 4 and a high-speed signal processing module 6.
The coded disc 2 is fixedly sleeved on the outer side surface of the rotating shaft 1, and the circumference of the luminous code channel 3 is arranged on the outer side surface of the coded disc 2; the photoelectric sensor 5 is arranged on one side of the light-emitting code channel 3, the lens group 4 is arranged between the light-emitting code channel 3 and the photoelectric sensor 5, and the high-speed signal processing module 6 is electrically connected with the photoelectric sensor 5.
The luminous code channel 3 comprises an incremental luminous code channel 31 and an absolute luminous code channel 32, wherein the incremental luminous code channel 31 is circumferentially arranged on the outer side surface of the coded disc 2, and the absolute luminous code channel 32 is circumferentially arranged on the outer side surface of the coded disc 2.
The incremental light code track 31 and the absolute light code track 32 can replace the photoelectric generator (light source) after electroluminescence or photoluminescence. Therefore, the photosensitive strength of the reading head is improved, the structure of the reading head is greatly simplified, and the reliability is improved; the quantum dots sprayed and printed by the electrofluid can reach deep submicron size, submicron code channel grid lines can be constructed, and the grid spacing limit is broken through, so that the measurement precision of the rotary encoder is improved, and nanoscale measurement is realized; the light-emitting code channel 3 has an ultra-low work number and low light-emitting power consumption.
The incremental light-emitting code channel 31 and the absolute light-emitting code channel 32 are disposed at an interval, and the incremental light-emitting code channel 31 is located above the absolute light-emitting code channel 32.
Specifically, as shown in fig. 2 and fig. 3, the first grid group 8 is disposed on the outer side surface of the incremental light-emitting track 31, each grid in the first grid group 8 is uniformly distributed, and the first grid group 8 is disposed by electrofluid jet printing.
The grids in the first grid group 8 are divided into a red grid, a green grid and a blue grid, and the grids of the three colors are uniformly distributed.
The outer side surface of the absolute type light-emitting code channel 32 is provided with a second grid group 9, each grid in the second grid group 9 is randomly distributed, and the second grid group 9 is arranged in an electrofluid jet printing mode.
The invention also provides a measuring method of the rotary encoder based on the electrofluid spray printing light-emitting code channel 3, which comprises the following steps:
the high-speed signal processing module 6 is electrically connected to the digital display meter 7;
the rotary encoder is adjusted to rotate in a low-speed mode, when the coded disc 2 starts to rotate along with the rotating shaft 1, the photoelectric sensor 5 reads a photoelectric analog signal which is amplified by the mirror group 4 and is emitted after the absolute type luminous code channel 32 rotates, and a digital code of a determined position is obtained;
then, on the basis of the position information of the absolute type light-emitting code track 32, the incremental type light-emitting code track 31 is measured, the photoelectric sensor 5 is continuously used for receiving the optical analog signal of displacement, the read analog signal is processed through the high-speed signal processing module 6 so as to complete the information conversion processing from the analog signal to the digital signal and then to the photoelectric position information, and finally, the final photoelectric position information is transmitted to the interface of the digital display meter 7 through the interface so as to complete the reading of the diagonal displacement information.
Adjust rotary encoder and rotate under high-speed mode, white light luminance spectrum that luminous code track 3's red, green, blue three-colour grid is constituteed under the different rotational speeds is discerned to accessible photoelectric sensor 5, thereby confirm rotary encoder's rotational speed, under rotary encoder's high-speed rotation, because the existence of persistence of vision effect, can collect the data of the white light luminance spectrum that incremental luminous code track 31 went up red, green, blue three-colour grid is constituteed, confirm its and rotary encoder's relation between the rotational speed, thereby establish the function of white light luminance spectrum and rotational speed, finally obtain corresponding rotational speed through the white light luminance spectrum of matching luminous code track 3.
Two different measuring modes are respectively used in the high-speed and low-speed motion states of the code disc 2. Through the arrangement of the low-speed mode and the high-speed mode, the advantages brought by double code channels can be fully utilized, and the purpose of accurate measurement is realized. In the low-speed mode, the initial measurement is carried out through the absolute type light-emitting code channel 32, and then the optical subdivision positioning is carried out on the incremental type light-emitting code channel 31, so that the measurement precision of the rotary encoder is greatly improved. In the high-speed mode, the photoelectric sensor 5 recognizes that white light brightness spectrums formed by red, green and blue grids on the incremental light-emitting code track 31 at different rotating speeds so as to determine the rotating speed of the rotary encoder, which is a measuring method based on the persistence of vision effect.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. A rotary encoder based on electrofluid jet printing light-emitting code channels is characterized by comprising:
a rotating shaft;
the coded disc is fixedly sleeved on the outer side surface of the rotating shaft;
the luminous code channel is circumferentially arranged on the outer side face of the code wheel;
the photoelectric sensor is arranged on one side of the light-emitting code channel;
the lens group is arranged between the light-emitting code channel and the photoelectric sensor;
and the high-speed signal processing module is electrically connected with the photoelectric sensor.
2. The rotary encoder of claim 1, wherein the light-emitting track comprises:
the incremental light-emitting code channel is circumferentially arranged on the outer side surface of the coded disc;
the absolute luminous code channel is circumferentially arranged on the outer side surface of the coded disc;
the incremental light-emitting code channel and the absolute light-emitting code channel are arranged at intervals, and the incremental light-emitting code channel is positioned above the absolute light-emitting code channel.
3. The rotary encoder based on electrofluid jet printing light-emitting code tracks as claimed in claim 2, wherein: the outer side surface of the incremental light-emitting code channel is provided with a first grid group, each grid in the first grid group is uniformly distributed, and the first grid group is arranged in an electrofluid jet printing mode.
4. The rotary encoder based on electrofluid jet printing light-emitting code tracks according to claim 3, characterized in that: the grids in the first grid set are divided into a red grid, a green grid and a blue grid.
5. The rotary encoder based on electrofluidic inkjet light-emitting track of claim 2 or 3, wherein: and a second grid group is arranged on the outer side surface of the absolute type light-emitting code channel, each grid in the second grid group is randomly distributed, and the second grid group is arranged in an electrofluid jet printing mode.
6. A measuring method of a rotary encoder based on electrofluid jet printing light-emitting code channels is characterized by comprising the following steps:
electrically connecting the high-speed signal processing module to a digital display meter;
adjusting the rotary encoder to rotate in a low-speed mode, and when the code disc rotates along with the rotating shaft, reading a photoelectric quantity analog signal which is amplified by the lens group and is emitted after the absolute luminous code track rotates by the photoelectric sensor to obtain a digital code of a determined position;
and then measuring the incremental light-emitting code channel on the basis of the absolute light-emitting code channel position information, continuously using the photoelectric sensor to receive the optical analog signal of the displacement, processing the read analog signal through the high-speed signal processing module to finish the information conversion processing from the analog signal to the digital signal and then to the photoelectric position information, and finally transmitting the final photoelectric position information to an interface of a digital display meter through an interface to finish the reading of the diagonal displacement information.
7. The method for measuring the rotary encoder based on the electrofluid jet printing luminous code channel according to claim 6, characterized by further comprising the following steps:
adjust rotary encoder and rotate under high-speed mode, white light luminance spectrum that the red, green, blue three-colour grid of luminous code track is constituteed under the different rotational speeds of accessible photoelectric sensor discernment, thereby confirm rotary encoder's rotational speed, under rotary encoder's high-speed rotation, because the existence of persistence of vision effect, can collect the data of the white light luminance spectrum that the red, green, blue three-colour grid is constituteed on the incremental luminous code track, confirm its and rotary encoder's relation between the rotational speed, thereby establish the function of white light luminance spectrum and rotational speed, the white light luminance spectrum through the luminous code track of matching finally obtains corresponding rotational speed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110052952.8A CN112857411B (en) | 2021-01-15 | 2021-01-15 | Rotary encoder based on electrofluid jet printing light-emitting code channel and measuring method thereof |
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| CN202110052952.8A CN112857411B (en) | 2021-01-15 | 2021-01-15 | Rotary encoder based on electrofluid jet printing light-emitting code channel and measuring method thereof |
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| CN112857411B CN112857411B (en) | 2022-10-14 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1031133A (en) * | 1987-07-28 | 1989-02-15 | 成都电讯工程学院 | Dynamic-distribution measuring equipment for physical parameters of rotators |
| US5216245A (en) * | 1991-10-04 | 1993-06-01 | General Motors Corporation | Multi-color optical shaft position sensor |
| JPH08233610A (en) * | 1994-12-22 | 1996-09-13 | Renishaw Plc | Photoelectric scale reader |
| JP2007248117A (en) * | 2006-03-14 | 2007-09-27 | Japan Aerospace Exploration Agency | Optical encoder using electroluminescence |
| CN101501455A (en) * | 2006-08-18 | 2009-08-05 | 莱卡地球系统公开股份有限公司 | Optoelectronic angle sensor |
| CN101629832A (en) * | 2009-07-28 | 2010-01-20 | 上海电力学院 | Rotary encoder based on color discrimination |
| CN111077333A (en) * | 2019-12-28 | 2020-04-28 | 中国特种设备检测研究院 | System and method for testing running speed of skating vehicle type recreation facility |
-
2021
- 2021-01-15 CN CN202110052952.8A patent/CN112857411B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1031133A (en) * | 1987-07-28 | 1989-02-15 | 成都电讯工程学院 | Dynamic-distribution measuring equipment for physical parameters of rotators |
| US5216245A (en) * | 1991-10-04 | 1993-06-01 | General Motors Corporation | Multi-color optical shaft position sensor |
| JPH08233610A (en) * | 1994-12-22 | 1996-09-13 | Renishaw Plc | Photoelectric scale reader |
| JP2007248117A (en) * | 2006-03-14 | 2007-09-27 | Japan Aerospace Exploration Agency | Optical encoder using electroluminescence |
| CN101501455A (en) * | 2006-08-18 | 2009-08-05 | 莱卡地球系统公开股份有限公司 | Optoelectronic angle sensor |
| CN101629832A (en) * | 2009-07-28 | 2010-01-20 | 上海电力学院 | Rotary encoder based on color discrimination |
| CN111077333A (en) * | 2019-12-28 | 2020-04-28 | 中国特种设备检测研究院 | System and method for testing running speed of skating vehicle type recreation facility |
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