CN205691142U - A kind of photoelectric code disk and encoder - Google Patents
A kind of photoelectric code disk and encoder Download PDFInfo
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- CN205691142U CN205691142U CN201620552399.9U CN201620552399U CN205691142U CN 205691142 U CN205691142 U CN 205691142U CN 201620552399 U CN201620552399 U CN 201620552399U CN 205691142 U CN205691142 U CN 205691142U
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Abstract
The utility model discloses a kind of photoelectric code disk and encoder, this code-disc includes: code-disc matrix, phase place code channel, zero-bit code channel and increment code channel；Wherein, phase place code channel, zero-bit code channel and increment code channel, load on one heart on the different-diameter circumference of code-disc matrix；Zero-bit code channel, including: the first zero-bit sequence (Z) and the second zero-bit sequence (/Z), the first zero-bit sequence (Z) and the second zero-bit sequence (/Z) are positioned at the both sides of increment code channel；The groove of the first zero-bit sequence (Z), including: 2～5 bright grid and 4～10 dark grid；The groove of the second zero-bit sequence (/Z), including: the dark grid identical with the bright grizzly bar number of the first zero-bit sequence (Z), and the bright grid identical with the dark grizzly bar number of the first zero-bit sequence (Z).Scheme of the present utility model, can overcome in prior art that contrast is low, certainty of measurement is low and the defect such as poor reliability, it is achieved contrast is high, certainty of measurement is high and the beneficial effect of good reliability.
Description
Technical field
This utility model belongs to encoder techniques field, is specifically related to a kind of photoelectric code disk and encoder, particularly relates to one
Plant high-contrast incremental encoder code-disc and there is the photoelectric encoder of this code-disc.
Background technology
Photoelectric encoder is a kind of to integrate light, mechanical, electrical angle-measuring equipment, by frame for movement and signal processing circuit
Convert optical signals into the signal of telecommunication, thus realize the direct or indirect survey of the multiple physical quantitys such as diagonal displacement, position and speed
Amount.In incremental optical-electricity encoder, the measurement of position must with absolute zero position (such as: reference position during calculating with calculating
Or with reference to Fixed Initial Point) make reference, therefore the absolute zero position of encoder is one of core element of incremental encoder design, affects
The service behaviour of photoelectric encoder and certainty of measurement.
Zero locatino grating (such as: be carved with the grating scale of the coding strain line group of mark zero-bit) is by one group of unequal interval, non-wide
Bright line and the concealed wire of degree are formed, and when zero locatino grating relative motion, can form sharp pulse jumpy (such as: directly dash forward
The pulse become), processing circuit can using this sharp pulse as on-level (such as: when circuit input end connects nominal load, make electricity
The minimum input current potential that road output is allowed in the electronegative potential upper limit), form the absolute zero position of encoder.Zero locatino grating is in fortune
Time big luminous flux formed during Dong is referred to as contrast with the ratio of highlight flux, current incremental encoder zero locatino grating
Contrast is generally 1/2～1/3, in the case of strong electromagnetic, zero-bit error code easily occurs, causes miscount, encoder
Reliability cannot meet use requirement.
In prior art, have that contrast is low, certainty of measurement is low and the defect such as poor reliability.
Utility model content
The purpose of this utility model is, for drawbacks described above, it is provided that a kind of photoelectric code disk and encoder, existing to solve
The problem that in technology, zero locatino grating contrast is low, reaches to improve the effect of absolute zero position accuracy.
This utility model provides a kind of photoelectric code disk, including: code-disc matrix, phase place code channel, zero-bit code channel and increment code channel；
Wherein, described phase place code channel, zero-bit code channel and increment code channel, load on one heart on the different-diameter circumference of described code-disc matrix；
Described zero-bit code channel, including: the first zero-bit sequence and the second zero-bit sequence, described first zero-bit sequence and the second zero-bit sequence bit
Both sides in described increment code channel；The groove of described first zero-bit sequence, including: 2～5 bright grid and 4～10 dark grid；Described
The groove of the second zero-bit sequence, including: the dark grid identical with the bright grizzly bar number of described first zero-bit sequence, and with described first
The bright grid that the dark grizzly bar number of zero-bit sequence is identical.
Alternatively, the bright grid of described first zero-bit sequence and/or dark grid, with the dark grid of described second zero-bit sequence and/or
Bright grid, are mutually correspondingly arranged in the both sides of described phase place code channel.
Alternatively, the groove of described first zero-bit sequence, including: 5 bright grid and 10 dark grid.
Alternatively, described phase place code channel, including: first phase code channel, second phase code channel and third phase code channel；Its
In, described first phase code channel, it is positioned at the described first zero-bit sequence side away from described increment code channel；Described second phase code
Road, is positioned at the described second zero-bit sequence side away from described increment code channel；Described third phase code channel, is positioned at described second phase
Bit code road is away from the side of described second zero-bit sequence.
Alternatively, the groove of described first phase code channel, including: be distributed on the corresponding circumference of described code-disc matrix and
Light and dark bright grid and dark grid.
Alternatively, the groove number of described first phase code channel, second phase code channel and third phase code channel is identical and initial
There is between groove default angle；Described groove number and/or described default angle, adapt to, the Permanent Magnet and Electric adaptive with described code-disc
The number of poles of machine.
Alternatively, described increment code channel, including: the first increment code channel and the second increment code channel；Described first increment code channel
And/or second groove of increment code channel, including: it is distributed on the corresponding circumference of described code-disc matrix and light and dark bright grid
With dark grid.
Alternatively, the groove number of described increment code channel, including: 512,1024,2500 at least one.
Alternatively, described code-disc matrix, including: optical flat.
Alternatively, described optical flat is circular.
Matching with above-mentioned code-disc, on the other hand this utility model provides a kind of encoder, including: above-described photoelectricity
Code-disc.
Scheme of the present utility model, by strengthening the contrast of photoelectric encoder zero-bit sequence, can improve absolute zero position
Accuracy, to ensure encoder reliability in application process, so solve photoelectric encoder code-disc zero-bit sequence (i.e. zero
Position grating) problem that contrast is not enough, and solve the encoder problem that absolute zero position is abnormal in application process.
Further, scheme of the present utility model, by using the code-disc of high-contrast zero-bit sequence (such as: incremental encoding
Device code-disc), it is possible to it is effectively improved the accuracy of incremental optical-electricity encoder absolute zero position, it is ensured that the certainty of measurement of photoelectric encoder
And functional reliability, it is also possible to improve the reliability during encoder applies.
Thus, scheme of the present utility model, utilize the mode of contrast strengthening zero-bit sequence, solve in prior art zero
The position low problem of grating contrast, thus, overcome that contrast in prior art is low, certainty of measurement is low and the defect of poor reliability,
Realize contrast height, certainty of measurement height and the beneficial effect of good reliability.
Other features and advantages of the utility model will illustrate in the following description, and, partly from description
In become apparent, or by implement this utility model and understand.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of an embodiment of photoelectric code disk of the present utility model；
Fig. 2 is the structural representation of an embodiment of zero-bit code channel and increment code channel in photoelectric code disk of the present utility model；
Fig. 3 is the partial enlargement structural representation of an embodiment in S portion in Fig. 2.
In conjunction with accompanying drawing, in this utility model embodiment, reference is as follows:
100-code-disc matrix.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearer, concrete below in conjunction with this utility model
Technical solutions of the utility model are clearly and completely described by embodiment and corresponding accompanying drawing.Obviously, described embodiment
It is only a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, this area
The every other embodiment that those of ordinary skill is obtained under not making creative work premise, broadly falls into this utility model
The scope of protection.
According to embodiment of the present utility model, it is provided that a kind of photoelectric code disk, photoelectric code the most of the present utility model
The structural representation of one embodiment of dish.This photoelectric code disk may include that code-disc matrix 100, phase place code channel, zero-bit code channel and increasing
Amount code channel.
Such as: as it is shown in figure 1, this photoelectric code disk is by zero-bit code channel Z ,/Z, phase place code channel U, V, W, increment code channel A, B and code
Dish matrix 100 forms.
Wherein, described phase place code channel, zero-bit code channel and increment code channel, load on the difference of described code-disc matrix 100 with one heart
On diameter circumference.
Specifically, described zero-bit code channel, may include that the first zero-bit sequence Z and the second zero-bit sequence/Z, the described 1st
Bit sequence Z and the second zero-bit sequence/Z is positioned at the both sides of described increment code channel；The groove of described first zero-bit sequence Z, including: 2
～5 bright grid and 4～10 dark grid；The groove of described second zero-bit sequence/Z, including: bright with described first zero-bit sequence Z
The dark grid that grizzly bar number is identical, and the bright grid identical with the dark grizzly bar number of described first zero-bit sequence Z.
Such as: zero-bit code channel is made up of zero-bit sequence Z and zero-bit sequence/Z.
Thus, the bar number of bright grid and dark grid by arranging zero-bit sequence, the contrast of zero-bit sequence can be strengthened, to solve
The problem that certainly existing code-disc zero-bit alignment's degree is not enough, is conducive to improving the accuracy of absolute zero position.
Alternatively, the bright grid of described first zero-bit sequence Z and/or dark grid, with the dark grid of described second zero-bit sequence/Z and/
Or bright grid, mutually it is correspondingly arranged in the both sides of described phase place code channel.
Such as: as shown in Figures 2 and 3, the sequence order of zero-bit sequence Z is: " 101000100100001 ", wherein, and " 1 "
Representing bright grid, " 0 " represents dark grid.The sequence order of zero-bit sequence/Z is: " 010111011011110 ".
Thus, by being correspondingly arranged of bright grid and dark grid in zero-bit sequence Z in zero-bit code channel and/Z, be conducive to carrying further
The contrast of high zero-bit sequence, is conducive to improving the accuracy using this code-disc to measure and reliability.
Alternatively, the groove of described first zero-bit sequence Z, may include that 5 bright grid and 10 dark grid.
Such as: zero-bit sequence Z, it is made up of 5 bright grid and 10 dark grid；Zero-bit sequence/Z, by 10 bright grid and 5 dark grid
Composition.
Such as: during zero-bit sequence motion, the highlight flux of formation is 5, and secondary big luminous flux is 1, the contrast that can be formed
Value is 1/5, hence it is evident that higher than the contrast of general incremental encoder zero-bit sequence, even if under strongly disturbing applicable cases, the most not
Zero-bit error code phenomenon easily occur, it is ensured that the accuracy of absolute zero position, the certainty of measurement and the work that improve photoelectric encoder can
By property.
Such as: alternately, removing the bright grid of part in above-mentioned zero-bit sequence and dark grid, zero-bit sequence still can use (example
As: contrast value is 1/3～1/2), but the maximum that can reduce zero locatino grating leads to light quantity and contrast, incremental encoder absolute zero
The accuracy of position can decrease, and also reduces certainty of measurement and the functional reliability of photoelectric encoder simultaneously.
Thus, by the high-contrast of grid bright in zero-bit sequence and dark grid is arranged, the anti-interference energy of code-disc can be promoted
Power, it is ensured that the accuracy of absolute zero position.
In an optional embodiment, described phase place code channel, may include that first phase code channel U, second phase code channel
V and third phase code channel W.
Such as: phase place code channel is made up of U, V, W.
Wherein, described first phase code channel U, it is positioned at the described first zero-bit sequence Z side away from described increment code channel；Institute
State second phase code channel V, be positioned at the described second zero-bit sequence/Z side away from described increment code channel；Described third phase code channel
W, is positioned at the described second phase code channel V side away from described second zero-bit sequence/Z.
Such as: phase place code channel, may be used for providing position of magnetic pole for driver during electric motor starting.
Thus, the phase place code channel arranged by layering, preferably can provide magnetic pole position accurate, reliable for driver
Put, and safety is good.
Alternatively, the groove of described first phase code channel U, may include that the corresponding circle being distributed in described code-disc matrix 100
Zhou Shang and light and dark bright grid and dark grid.
Such as: 4 bright grid, 4 dark grid, uniform form and light and dark is used.
Thus, by uniform and light and dark bright grid and the setting of dark grid, be conducive to improving position of magnetic pole further and carry
The accuracy of confession and reliability.
Alternatively, described first phase code channel U, second phase code channel V identical with the groove number of third phase code channel W and
Between initial groove, there is default angle；Described groove number and/or described default angle, adapt to, with described code-disc adaptation forever
The number of poles of magneto.
Such as: the angle between the groove number of phase place code channel and initial groove is relevant with the number of poles of magneto.
Such as: the groove of 8 pole motors is 8,4 bright grid, 4 dark grid.
Such as: the angle between U, V, W groove differs 30 ° successively.
Thus, by the adaptive setting of angle between groove number and initial groove with the number of poles of magneto, be conducive to promoting
The reliability of magneto work and safety.
In an optional embodiment, described increment code channel, may include that the first increment code channel A and the second incremental code
Road B；Described first increment code channel A and/or the groove of the second increment code channel B, may include that and be distributed in described code-disc matrix 100
Corresponding circumference on and light and dark bright grid and dark grid.
Such as: increment code channel is made up of A, B, its groove uses uniform form, and light and dark, for angle or position
The counting put.
Thus, the increment code channel arranged by two-way, two pulse signals can be exported；By uniform and light and dark
Bright grid and dark grid, accuracy and the reliability of output of pulse signal can be improved.
Alternatively, the groove number of described increment code channel, may include that 512,1024,2500 at least one.
Such as: the number of the groove of increment code channel decides the resolution of encoder, conventional groove number have 512,1024,
2500 etc..
Thus, by can the adaptive increment code channel selecting groove number, it is provided that multiple Measurement Resolution, to be applicable to need
Wanting the multiple occasion of output of pulse signal, highly versatile, reliability is high.
In an optional embodiment, described code-disc matrix 100, may include that optical flat.
Such as: code-disc matrix is optical glass, it is the carrier of each code channel groove.
Thus, by optical flat as code-disc matrix, good in optical property, the accuracy and reliability of measurement is good.
Alternatively, described optical flat is circular.By circular code-disc matrix, lightweight and flexible rotation,
Motility and the reliability of code-disc work can be improved.
Through substantial amounts of verification experimental verification, use the technical scheme of the present embodiment, by strengthening photoelectric encoder zero-bit sequence
Contrast, can improve the accuracy of absolute zero position, to ensure encoder reliability in application process, and then solves photoelectricity
The problem that encoder code disc zero-bit alignment's degree is not enough, and solve encoder abnormal asking of absolute zero position in application process
Topic.
According to embodiment of the present utility model, additionally provide a kind of encoder corresponding to photoelectric code disk.This encoder packet
Include: above-described photoelectric code disk.
In one example, this photoelectric code disk, can be high-contrast zero-bit sequence code-disc.
In one example, this encoder, can be photoelectric encoder.
In one example, this photoelectric encoder, can be incremental encoder, it is also possible to be absolute type encoder.
In a detailed description of the invention, as it is shown in figure 1, the structure of above-mentioned photoelectric code disk (i.e. incremental encoder code-disc),
May include that zero-bit code channel Z ,/Z, phase place code channel U, V, W, increment code channel A, B and code-disc matrix.By strengthening code-disc zero-bit sequence
The contrast of row, improves the accuracy of incremental optical-electricity encoder absolute zero position, and then ensures the measurement essence of photoelectric encoder
Degree and functional reliability.
Wherein, described zero-bit code channel is made up of zero-bit sequence Z and/Z, as shown in Figures 2 and 3, and the wherein sequence order of Z
For: " 101000100100001 " (" 1 " represents bright grid, and " 0 " represents dark grid), it is made up of 5 bright grid and 10 dark grid；Wherein/Z
Sequence order be: " 010111011011110 ", be made up of 10 bright grid and 5 dark grid；During zero-bit sequence motion, formation
Highlight flux is 5, and secondary big luminous flux is 1, and the contrast value that can be formed is 1/5, hence it is evident that higher than general incremental encoder zero-bit
The contrast of sequence, even if under strongly disturbing applicable cases, is not easy to zero-bit error code phenomenon occur, it is ensured that absolute zero position
Accuracy, improves certainty of measurement and the functional reliability of photoelectric encoder.
Wherein, zero-bit sequence Z and the/sequence order of Z, it is also possible to be the actual demand with user match other is suitable
Sequence.
Wherein, described phase place code channel is made up of U, V, W, the angle between its groove number and initial groove and the pole of magneto
Number is relevant, provides position of magnetic pole for driver when electric motor starting；The groove of such as 8 pole motors is 8,4 bright grid, 4
Dark grid, use uniform form, and light and dark；Angle between U, V, W groove differs 30 ° successively.
Wherein, described increment code channel is made up of A, B, and its groove uses uniform form, and light and dark, for angle or
The counting of person position；The number of its groove decides the resolution of encoder, and conventional groove number has 512,1024,2500 etc..
Wherein, described code-disc matrix is optical glass, is the carrier of each code channel groove.
In an optional embodiment, this encoder, it is also possible to including: photoelectric detection system；Described Photoelectric Detection fills
Put, install with described photoelectric code disk adaptation.
Alternatively, described photoelectric detection system, including: structure is (such as: install axle, bearing, mounting bracket, erecting bed
The mechanical structured members such as face), LED, photosensitive unit and signal processing circuit.
Such as: described structure and photosensitive unit, install with described code-disc adaptation respectively；Described LED and photosensitive unit, suitable
Join and be connected to signal processing circuit.
The process realized due to the encoder of the present embodiment and function essentially correspond to the code shown in earlier figures 1 to Fig. 3
The embodiment of dish, principle and example, therefore the most detailed part in the description of the present embodiment, may refer to being correlated with in previous embodiment
Illustrate, do not repeat at this.
Through substantial amounts of verification experimental verification, use the technical solution of the utility model, by using high-contrast zero-bit sequence
Code-disc (such as: incremental encoder code-disc), it is possible to be effectively improved the accuracy of incremental optical-electricity encoder absolute zero position, it is ensured that light
The certainty of measurement of photoelectric coder and functional reliability, it is also possible to improve the reliability during encoder applies.
To sum up, skilled addressee readily understands that, on the premise of not conflicting, above-mentioned each advantageous manner can be certainly
By ground combination, superposition.
The foregoing is only embodiment of the present utility model, be not limited to this utility model, for this area
Technical staff for, this utility model can have various modifications and variations.It is all within spirit of the present utility model and principle,
Any modification, equivalent substitution and improvement etc. made, within should be included in right of the present utility model.
Claims (11)
1. a photoelectric code disk, it is characterised in that including: code-disc matrix (100), phase place code channel, zero-bit code channel and increment code channel；
Wherein,
Described phase place code channel, zero-bit code channel and increment code channel, load on the different-diameter circumference of described code-disc matrix (100) with one heart
On；
Described zero-bit code channel, including the first zero-bit sequence (Z) and the second zero-bit sequence (/Z), described first zero-bit sequence (Z) and
Second zero-bit sequence (/Z) is positioned at the both sides of described increment code channel；
The groove of described first zero-bit sequence (Z), including: 2～5 bright grid and 4～10 dark grid；
The groove of described second zero-bit sequence (/Z), including: identical with the bright grizzly bar number of described first zero-bit sequence (Z) is dark
Grid, and the bright grid identical with the dark grizzly bar number of described first zero-bit sequence (Z).
Code-disc the most according to claim 1, it is characterised in that the bright grid of described first zero-bit sequence (Z) and/or dark grid,
With dark grid and/or the bright grid of described second zero-bit sequence (/Z), mutually it is correspondingly arranged in the both sides of described phase place code channel.
Code-disc the most according to claim 1 and 2, it is characterised in that the groove of described first zero-bit sequence (Z), including: 5
The bright grid of bar and 10 dark grid.
Code-disc the most according to claim 1 and 2, it is characterised in that described phase place code channel, including: first phase code channel
(U), second phase code channel (V) and third phase code channel (W)；Wherein,
Described first phase code channel (U), is positioned at the described first zero-bit sequence (Z) side away from described increment code channel；
Described second phase code channel (V), is positioned at the described second zero-bit sequence (/Z) side away from described increment code channel；
Described third phase code channel (W), is positioned at described second phase code channel (V) away from the one of described second zero-bit sequence (/Z)
Side.
Code-disc the most according to claim 4, it is characterised in that the groove of described first phase code channel (U), including: uniform
On the corresponding circumference of described code-disc matrix (100) and light and dark bright grid and dark grid.
Code-disc the most according to claim 5, it is characterised in that described first phase code channel (U), second phase code channel (V)
Between and initial groove identical with the groove number of third phase code channel (W), there is default angle；
Described groove number and/or described default angle, adapt to, the number of poles of the magneto adaptive with described code-disc.
Code-disc the most according to claim 1 and 2, it is characterised in that described increment code channel, including: the first increment code channel (A)
With the second increment code channel (B)；
Described first increment code channel (A) and/or the groove of the second increment code channel (B), including: it is distributed in described code-disc matrix
(100) on corresponding circumference and light and dark bright grid and dark grid.
Code-disc the most according to claim 7, it is characterised in that the groove number of described increment code channel, including: 512,1024
Bar, 2500 at least one.
Code-disc the most according to claim 1 and 2, it is characterised in that described code-disc matrix (100), including: optical glass
Plate.
Code-disc the most according to claim 9, it is characterised in that described optical flat is circular.
11. 1 kinds of encoders, it is characterised in that including: the photoelectric code disk as described in claim 1-10 is arbitrary.
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Cited By (4)
| 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 |
| 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 |
| CN110794383A (en) * | 2019-11-07 | 2020-02-14 | 上海禾赛光电科技有限公司 | Code disc, photoelectric encoder and laser radar |
| CN114353842A (en) * | 2021-12-15 | 2022-04-15 | 苏州汇川控制技术有限公司 | Multi-group vernier code disc, photoelectric encoder and light source position calculating method |
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Cited By (5)
| 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 |
| 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 |
| CN110794383A (en) * | 2019-11-07 | 2020-02-14 | 上海禾赛光电科技有限公司 | Code disc, photoelectric encoder and laser radar |
| CN114353842A (en) * | 2021-12-15 | 2022-04-15 | 苏州汇川控制技术有限公司 | Multi-group vernier code disc, photoelectric encoder and light source position calculating method |
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