CN109115250A - Array structure of photosensitive device and photoelectric encoder - Google Patents
Array structure of photosensitive device and photoelectric encoder Download PDFInfo
- Publication number
- CN109115250A CN109115250A CN201810900008.1A CN201810900008A CN109115250A CN 109115250 A CN109115250 A CN 109115250A CN 201810900008 A CN201810900008 A CN 201810900008A CN 109115250 A CN109115250 A CN 109115250A
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- sensor devices
- array structure
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- coding
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- 230000003287 optical effect Effects 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 8
- 238000003491 array Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
Classifications
-
- 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
- G01D5/3473—Circular or rotary encoders
-
- 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
- G01D5/36—Forming the light into pulses
- G01D5/38—Forming the light into pulses by diffraction gratings
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optical Transform (AREA)
Abstract
The invention relates to an array structure of a photosensitive device and a photoelectric encoder, wherein the array structure of the photosensitive device comprises a photosensitive device array and a shell; the shell is provided with two coding window units arranged opposite to the photosensitive device array and a signal window unit arranged between the two coding window units; each coding window unit comprises at least two columns of coding windows, and the coding windows of two adjacent columns are arranged in a staggered mode. Therefore, under the condition of the same number of coding windows, the size of the array structure of the photosensitive device is smaller, the size of the photoelectric encoder is further reduced, and the photoelectric encoder can achieve the resolution ratio in a linear arrangement mode.
Description
Technical field
The present invention relates to photoelectric encoder technical fields, and in particular to a kind of array structure and photoelectric coding of sensor devices
Device.
Background technique
Photoelectric encoder be it is a kind of integrate optics, machinery, angle-measuring equipment electrically, at mechanical structure and signal
Reason circuit convert optical signals into electric signal, thus realize the direct of a variety of physical quantitys such as diagonal displacement, speed and position or
Measurement indirectly.
Currently, in order to improve the resolution ratio of photoelectric encoder, often through the sense in the array structure for increasing sensor devices
The number of optical device, the size that this will result in the array structure of sensor devices is larger, in turn results in the size of photoelectric encoder
It is larger.
Therefore, how to meet photoelectric encoder high-resolution with higher under smaller size simultaneously is art technology
Personnel's technical problem urgently to be resolved.
Summary of the invention
In view of this, it is an object of the invention to overcome the deficiencies of the prior art and provide a kind of array junctions of sensor devices
Structure and photoelectric encoder, to realize photoelectric encoder high-resolution with higher under smaller size.
In order to achieve the above object, the present invention provides a kind of array structure of sensor devices, including sensor devices array and shell
Body；
It is provided with two coding window units being oppositely arranged with the sensor devices array on the shell and setting exists
Signal window unit between two coding window units；
Each coding window unit includes at least two column coding windows, and the coding window of adjacent two column is staggered.
Further, in the array structure of sensor devices described above, the signal window unit includes at least two column
Signal window；
The signal window of adjacent two column is staggered.
Further, in the array structure of sensor devices described above, the signal window of adjacent two column is symmetrically arranged.
Further, in the array structure of sensor devices described above, the spacing of the coding window of adjacent two column is
0.03㎜。
Further, in the array structure of sensor devices described above, two neighboring coding window in each column coding window
The spacing of mouth is 0.16mm.
Further, in the array structure of sensor devices described above, the area of the coding window is less than the letter
Number window.
Further, in the array structure of sensor devices described above, the sensor devices array is photodiode
Array.
The present invention also provides a kind of photoelectric encoder, including light source device, rotary shaft, code-disc, determine grating, signal processing electricity
The array structure on road and sensor devices as described above；
The rotary shaft passes through code-disc and drives the code-disc rotation, and the optical signal of the light source device is made to pass through the code-disc
Grating is determined by the array structure reception of the sensor devices with described；
The array structure of the sensor devices converts electric signal for the optical signal and is sent to the signal processing circuit.
Further, in photoelectric encoder described above, the array junctions of the size of the code-disc and the sensor devices
The size of structure is corresponding.
Further, in photoelectric encoder described above, spot size that the light source device is formed with it is described photosensitive
The size of the array structure of device is corresponding.
Coding window is distributed as at least two column by the array structure and photoelectric encoder of sensor devices of the invention, adjacent
The coding window of two column is staggered, so that the array structure size of sensor devices is more under equal number of coding window
It is small, and then reduce the size of photoelectric encoder, and photoelectric encoder can be made to reach the resolution ratio under linearly aligned mode.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the array structure embodiment of sensor devices in the prior art.
Fig. 2 is the structural schematic diagram of the array structure embodiment one of sensor devices of the invention.
Fig. 3 is the structural schematic diagram of the array structure embodiment two of sensor devices of the invention.
Fig. 4 is the structural schematic diagram of photoelectric encoder embodiment of the invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical solution of the present invention will be carried out below
Detailed description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are obtained all without making creative work
Other embodiment belongs to the range that the present invention is protected.
Fig. 1 is the structural schematic diagram of the array structure embodiment of sensor devices in the prior art, as shown in Figure 1, existing skill
The array structure of sensor devices in art usually sets linear structure for coding window a, and is distributed in the two of signal window b
Side.
Fig. 2 is the structural schematic diagram of the array structure embodiment one of sensor devices of the invention, as shown in Fig. 2, this implementation
The array structure of the sensor devices of example includes sensor devices array (no longer showing in figure) and shell 10；
In the present embodiment, it is provided with two coding window units being oppositely arranged with sensor devices array on shell 10 and sets
Set the signal window unit between two coding window units；Wherein, each coding window unit includes at least two column codings
Window a, the coding window a of adjacent two column is staggered, to prevent the signal interference between adjacent window apertures, for example, such as a certain moment
It should light not come in, but because coming in apart from not enough will lead to light interference, will lead to product failure in this way.Such as Fig. 2
Shown, the present embodiment is described technical solution of the present invention by taking the coding window a of two column as an example.
In the present embodiment, the spacing of the coding window a of adjacent two column can be preferably 0.03 ㎜, in each column coding window a
The spacing of two neighboring coding window a can be in the way of Fig. 1 linear arrays in, the spacing setting of two coding window a,
To guarantee the integrality of signal, and reach identical resolution ratio, while reducing the array structure of sensor devices, the present embodiment is preferred
For 0.16mm.
Coding window a is distributed as at least two column, the coding of adjacent two column by the array structure of the sensor devices of the present embodiment
Window a is staggered, so that the array structure of sensor devices is smaller, and then subtracts under equal number of coding window a
The size of small photoelectric encoder, and photoelectric encoder can be made to reach the resolution ratio under linearly aligned mode.
As shown in Fig. 2, the present embodiment signal window unit includes at least two column signal window b；The signal window of adjacent two column
Mouth b is staggered.Wherein, the area of coding window a is less than signal window b.
Fig. 3 is the structural schematic diagram of the array structure embodiment two of sensor devices of the invention, as shown in Fig. 2, this implementation
The array structure of the sensor devices of the array structure and embodiment illustrated in fig. 2 of the sensor devices of example, which is distinguished, to be, adjacent two column
Signal window b is symmetrically arranged.
Further, in this embodiment coding window a can be the shapes such as rectangle, square, signal window b can be with
For the shapes such as rectangle, trapezoidal.
Further, in this embodiment sensor devices array be preferably photodiode arrangement.
For example, the present embodiment is for comprising 12 coding window a and 4 signal window b, if coding window a uses Fig. 1
Linear array be arranged, the size of sensor devices array structure is φ 5.305, is staggered according to shown in Fig. 2
Mode is arranged, and the size of sensor devices array structure is φ 4.081, is reduced area ratio and is reached 40.73%, according to figure
Staggered pattern shown in 3 is arranged, and the size of sensor devices array structure is φ 4.142.
Fig. 4 is the structural schematic diagram of photoelectric encoder embodiment of the invention, as shown in figure 4, the photoelectricity of the present embodiment is compiled
Code device includes light source device 2, rotary shaft 3, code-disc 4, the sensor devices for determining grating 5, signal processing circuit 6 and above-described embodiment
Array structure 1；Wherein, rotary shaft 3 drives code-disc 4 to rotate across code-disc 4, and the optical signal of light source device 2 is made to pass through code-disc 4 and determine
Grating 5 is received by the array structure 1 of sensor devices；The array structure 1 of sensor devices converts optical signal into electric signal and is sent to
Signal processing circuit 6 is handled obtained point signal by signal processing circuit 6.
In practical applications, the size of code-disc 4 is corresponding with the size of array structure 1 of sensor devices.For example, due to light
The size of the array structure of device reduces, and the relevant size of code-disc 4 is also required to reduce accordingly.In addition, the array junctions of optical device
The size of structure determines the spot size size of institute's light source device 2, and spot size caused by light source device 2 on the market is most
For φ 4.3 hereinafter, so that the optional range of the light source device 2 of the present embodiment is bigger, photoelectric encoder is enable to make
With different light sources, the practicability of photoelectric encoder is improved.
During a specific implementation, in order to make the resolution ratio of photoelectric encoder higher, in the present embodiment, letter
Number processing circuit 6 can further increase the resolution ratio of photoelectric encoder using algorithm of subdivision, for example, can believe in a cycle
The subdivision of multidigit is injected in inside number, for example by the sine wave of a cycle, is divided into 2, that is, 4 different data,
4 resolution ratio can be thus improved on the basis of original resolution ratio.
It is understood that same or similar part can mutually refer in the various embodiments described above, in some embodiments
Unspecified content may refer to the same or similar content in other embodiments.
It should be noted that in the description of the present invention, term " first ", " second " etc. are used for description purposes only, without
It can be interpreted as indication or suggestion relative importance.In addition, in the description of the present invention, unless otherwise indicated, the meaning of " multiple "
Refer at least two.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiment or examples in can be combined in any suitable manner.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of array structure of sensor devices, which is characterized in that including sensor devices array and shell；
It is provided with two coding window units being oppositely arranged with the sensor devices array on the shell and is arranged at two
Signal window unit between the coding window unit；
Each coding window unit includes at least two column coding windows, and the coding window of adjacent two column is staggered.
2. the array structure of sensor devices according to claim 1, which is characterized in that the signal window unit includes extremely
Few two column signal windows；
The signal window of adjacent two column is staggered.
3. the array structure of sensor devices according to claim 2, which is characterized in that the signal window of adjacent two column is symmetrical
Arrangement.
4. the array structure of sensor devices according to claim 1, which is characterized in that between the coding window of adjacent two column
Away from for 0.03 ㎜.
5. the array structure of sensor devices according to claim 1, which is characterized in that two neighboring in each column coding window
The spacing of coding window is 0.16mm.
6. the array structure of -5 any sensor devices according to claim 1, which is characterized in that the face of the coding window
Product is less than the signal window.
7. the array structure of -5 any sensor devices according to claim 1, which is characterized in that the sensor devices array
For photodiode arrangement.
8. a kind of photoelectric encoder, which is characterized in that including light source device, rotary shaft, code-disc, determine grating, signal processing circuit
With the array structure of sensor devices as claimed in claim 1；
The rotary shaft passes through code-disc and drives the code-disc rotation, and the optical signal of the light source device is made to pass through the code-disc and institute
State the array structure reception for determining grating by the sensor devices；
The array structure of the sensor devices converts electric signal for the optical signal and is sent to the signal processing circuit.
9. photoelectric encoder according to claim 8, which is characterized in that the size of the code-disc and the sensor devices
The size of array structure is corresponding.
10. photoelectric encoder according to claim 8, which is characterized in that the spot size that the light source device is formed with
The size of the array structure of the sensor devices is corresponding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810900008.1A CN109115250A (en) | 2018-08-08 | 2018-08-08 | Array structure of photosensitive device and photoelectric encoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810900008.1A CN109115250A (en) | 2018-08-08 | 2018-08-08 | Array structure of photosensitive device and photoelectric encoder |
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| Publication Number | Publication Date |
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| CN109115250A true CN109115250A (en) | 2019-01-01 |
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ID=64852890
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| CN201810900008.1A Pending CN109115250A (en) | 2018-08-08 | 2018-08-08 | Array structure of photosensitive device and photoelectric encoder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110132327A (en) * | 2019-06-05 | 2019-08-16 | 知恒科技(天津)有限公司 | A kind of photoelectric encoder |
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| CN103591896A (en) * | 2013-11-29 | 2014-02-19 | 重庆理工大学 | Time grating linear displacement sensor based on alternating light fields |
| US20160163763A1 (en) * | 2013-07-24 | 2016-06-09 | Sony Corporation | Radiation image pickup unit and radiation image pickup display system |
| CN106092163A (en) * | 2016-07-28 | 2016-11-09 | 珠海格力节能环保制冷技术研究中心有限公司 | Photoelectric encoder and photoelectric conversion chip thereof and the bonding structure determining grating |
| CN206450234U (en) * | 2016-12-28 | 2017-08-29 | 西安沙尔特宝电气有限公司 | A kind of optical rotary encoder |
-
2018
- 2018-08-08 CN CN201810900008.1A patent/CN109115250A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5017987A (en) * | 1989-03-22 | 1991-05-21 | Ricoh Company, Ltd. | Contact type image sensor |
| CN1389928A (en) * | 2001-05-31 | 2003-01-08 | 柯尼卡株式会社 | CMOS image sensor |
| CN1998092A (en) * | 2004-05-28 | 2007-07-11 | 索尼株式会社 | Photoelectric conversion element array, its integrated device, their packaging structure, and optical information processor |
| US20160163763A1 (en) * | 2013-07-24 | 2016-06-09 | Sony Corporation | Radiation image pickup unit and radiation image pickup display system |
| CN103591896A (en) * | 2013-11-29 | 2014-02-19 | 重庆理工大学 | Time grating linear displacement sensor based on alternating light fields |
| CN106092163A (en) * | 2016-07-28 | 2016-11-09 | 珠海格力节能环保制冷技术研究中心有限公司 | Photoelectric encoder and photoelectric conversion chip thereof and the bonding structure determining grating |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110132327A (en) * | 2019-06-05 | 2019-08-16 | 知恒科技(天津)有限公司 | A kind of photoelectric encoder |
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Application publication date: 20190101 |