CN106404014B - A kind of incremental angle encoder pattern zero potential reference point coding method and mask plate - Google Patents
A kind of incremental angle encoder pattern zero potential reference point coding method and mask plate Download PDFInfo
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- 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
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Abstract
The invention discloses a kind of incremental angle encoder pattern zero potential reference point coding method and mask plate, method be arranged key light grid and indication grating zero-bit coding optical grating speculum it is symmetrical, first with random sequence coding light transmission coding 1 and impermeable pumped FIR laser 0.Light transmission situation when zero-bit encoded light grid relative motion is simulated by Orthogonal Composite.The sequence of adjustment coding 1 and 0 so that in addition to last column, the 1/3 of the sum of all numbers diagonal with it no more than light transmission coding sum in the digital and its above each row of other each row tails；Determine that the position for facilitating installation optoelectronic scanning and sensing device close to key light grid is then chosen in length and the position in zero-bit coding grating clear zone and dark space, the position of zero-bit coding grating according to coded sequence；Required zero-bit coding grating is obtained according to this.The grating zero-bit coding printed by the above method is short, and the zero signal characteristic remarkable of generation is conducive to the accurate reading of grating zero message, with application of the fit angle encoder in joint of robot.
Description
Technical field
The present invention relates to the research field of encoder, more particularly to a kind of incremental angle encoder pattern zero potential reference point
Coding method and mask plate.
Background technology
Angular encoder with built-in bearing is the special equipment and high precision machines rotary shaft that precise angle measures
Crucial closed loop location sensor.Incremental angle encoder uses incremental measuring method, and grating is by periodic grating columns lines group
At location information is formed effectively through grating clear zone (a) or lattice (clear zone code signal is 1) by visible light or infrared ray
Pulse is counted, then is obtained by calculating the incremental number (measuring step pitch number) being put since certain.Therefore must with absolute reference point come
Determine position, usually there are one or several such absolute reference points, using one of as absolute zero position reference point.
Required incremental number, coding are shorter by zero when decide that encoder identifies zero-bit due to the length of zero reference point coding
The incremental number that occupies of position is fewer, is more conducive to the precision for improving encoder, but encoded short across close, is unfavorable for zero reference point
The reading of position signal.Meanwhile zero-bit coding also needs to make the signal strength of acquisition gradually, slowly to enhance, and believe in zero-bit
Number trigger position, which makes signal rapidly, enhances suitable of short duration and sufficient intensity the signal of formation, to obtain accurate zero message.
It often only considered the length of coding when previous zero signal coding method, but there is no consider that coding forms triggering zero-bit
Signal characteristic, long so as to cause the zero-bit trigger signal signal period, signal characteristic is not notable enough, influences reference point precision and is
System precision.
Invention content
The shortcomings that it is a primary object of the present invention to overcome the prior art and deficiency, provide a kind of incremental angle encoder
The coding method of pattern zero potential reference point and mask plate.
In order to achieve the above object, the present invention uses following technical scheme：
The incremental angle encoder pattern zero potential reference point coding method of the present invention, includes the following steps：
S1, the zero-bits of key light grid is encoded to grating and the zero-bit coding optical grating speculum of indication grating is symmetrical arranged, and by zero
Position coding is divided into light transmission coding and impermeable pumped FIR laser, and wherein light transmission coding indicates that impermeable pumped FIR laser is indicated with 0, Mei Gebian with 1
The corresponding key light grid width of code, first with random sequence coding light transmission coding 1 and impermeable pumped FIR laser 0；
S2, the zero-bit that key light grid under random coded are simulated by Orthogonal Composite encode grating and the zero-bit of indication grating encodes
Light transmission situation when grating relative motion；
S3, the sequence that 1 and impermeable pumped FIR laser 0 are encoded by adjusting light transmission so that in addition to last column, other each row tails
The 1/3 of the sum of all numbers diagonal with it no more than light transmission coding sum in digital and its above each row；
S4, simulation the result shows that caused by final zero-bit coding grating according to the method establishment zero in zero signal
Position trigger signal only accounts for 1 measurement step pitch, and the signal strength at remaining moment is no more than the 1/3 of zero-bit trigger signal intensity；
The zero signal feature conveniently accurately identified is set up according to this, i.e. signal strength gradually, slowly enhances, and in zero signal
Trigger position, which makes signal rapidly, enhances suitable of short duration and sufficient intensity the signal of formation, to obtain accurate zero message；
S5, determine that zero-bit code length and position, zero-bit code length are the product for encoding sum and key light grid width.
It puts in order calculating and to arrange zero-bit coding grating in mask plate bright according to finally determining light transmission coding 1 and impermeable pumped FIR laser 0
The relative position and width in area and dark space, the zero-bit coding single clear zone width of grating are that the continuous light transmission of corresponding coding section is compiled
The product of yardage and key light grid width, it is corresponding coding section continuously opaque volume that zero-bit, which encodes the single dark space width of grating,
The product of yardage and key light grid width, zero-bit coding grating position then chooses close to key light grid and facilitate install optoelectronic scanning and
The position of photoelectric induction device；
S6, grating is encoded to obtain required zero-bit.
As a preferred technical solution, in step S2, the zero-bit that key light grid under random coded are simulated by Orthogonal Composite is compiled
The specific method of light transmission situation when the coding grating relative motion of the zero-bit of code grating and indication grating is：
The light transmission coding 1 and impermeable pumped FIR laser 0 of S21, the first row and first row put in order the random coded before foundation
Sequentially；
Row in S22, first row where all codings 1 all presses random coded sequential encoding light transmission coding 1 and opaque volume
Code 0；
S23, the sum of all numbers diagonal with it in the digital and its above each row of often row tail are calculated.
As a preferred technical solution, in step S4, it is 1 key light grid width that 1, which measures step pitch,.
As a preferred technical solution, in step S5, determine that the specific method of zero-bit code length and position is：
It is the product for encoding sum and key light grid width that zero-bit, which encodes grating length, according to finally determining light transmission coding
1 and impermeable pumped FIR laser 0 put in order and calculating and arrange the relative position and width in the coding of zero-bit in mask plate grating clear zone and dark space
Degree, the zero-bit coding single clear zone width of grating is the continuous light transmission coded number of corresponding coding section and key light grid width multiplies
Product, the zero-bit coding single dark space width of grating are that continuously opaque coded number and key light grid width multiply corresponding coding section
Then choose the position for facilitating installation optoelectronic scanning and photoelectric induction device close to key light grid in the position of product, zero-bit coding grating.
Coding sum is 340 as a preferred technical solution, and wherein 1 sum of light transmission coding is 74, and setting removes last
Row is outer, other each Hang mantissa and its more than the sum of all numbers diagonal with it in each row be no more than 23.
It is including close the present invention is based on the mask plate of incremental angle encoder pattern zero potential reference point coding method establishment
The zero locatino grating substrate of key light grid, the substrate are equipped with clear zone and dark space, and the vertical low-angle covering of the fan in the clear zone and dark space is set
It sets, and the clear zone and the setting of dark space interval, the clear zone is arranged in the left and right sides of printing version, and intermediate region is a clear zone
One dark space in interval is arranged in order；The clear zone is 30, and dark space is 29, and entire code area accounts for 1.47 °.
The clear zone, the printing form of dark space are as follows as a preferred technical solution,：Direction according to coding 1-59 from left to right
Be followed successively by 0.01 ° of the first clear zone, 0.05 ° of the first dark space, 0.02 ° of the second clear zone, 0.04 ° of the second dark space, 0.01 ° of third clear zone,
It is 0.04 ° of third dark space, 0.01 ° of the 4th clear zone, 0.03 ° of the 4th dark space, 0.01 ° of the 5th clear zone, 0.04 ° of the 5th dark space, the 6th bright
0.02 ° of area, 0.02 ° of the 6th dark space, 0.01 ° of the 7th clear zone, 0.03 ° of the 7th dark space, 0.01 ° of the 8th clear zone, the 8th dark space
0.03 °, 0.02 ° of the 9th clear zone, 0.03 ° of the 9th dark space, 0.01 ° of the tenth clear zone, 0.04 ° of the tenth dark space, the 11st clear zone
0.01 °, 0.04 ° of the 11st dark space, 0.01 ° of the 12nd clear zone, 0.05 ° of the 12nd dark space, 0.02 ° of the 13rd clear zone, the 13rd
0.01 ° of dark space, 0.01 ° of the 14th clear zone, 0.04 ° of the 14th dark space, 0.01 ° of the 15th clear zone, 0.05 ° of the 15th dark space,
16 0.01 ° of clear zones, 0.05 ° of the 16th dark space, 0.01 ° of the 17th clear zone, 0.03 ° of the 17th dark space, the 18th clear zone
0.02 °, 0.05 ° of the 18th dark space, 0.01 ° of the 19th clear zone, 0.03 ° of the 19th dark space, 0.01 ° of the 20th clear zone, the 20th
0.05 ° of dark space, 0.01 ° of the 21st clear zone, 0.04 ° of the 21st dark space, 0.02 ° of the 22nd clear zone, the 22nd dark space
0.05 °, 0.01 ° of the 23rd clear zone, the 23rd ° of dark space, 0.02 ° of the 24th clear zone, the 24th dark space
0.04 °, 0.01 ° of the 25th clear zone, 0.02 ° of the 25th dark space, 0.03 ° of the 26th clear zone, the 26th dark space
0.04 °, 0.01 ° of the 27th clear zone, 0.03 ° of the 27th dark space, 0.01 ° of the 28th clear zone, the 28th dark space
0.03 °, 0.01 ° of the 29th clear zone, 0.03 ° of the 29th dark space, 0.01 ° of the 30th clear zone.
Compared with prior art, the present invention having the following advantages that and advantageous effect：
Coding method is simple and effective, and be composed by digital crossover data mapping can Fast simulation compiled according to this
The zero signal feature that the coding of code printing generates.The grating zero-bit coding printed according to this is short, and the zero signal feature of generation is aobvious
Write, intensity gradually, slowly enhances, and make signal rapidly and enhance formation suitably of short duration in zero signal trigger position and
The signal of sufficient intensity can accurately read the zero message of grating, with fit angle encoder answering in joint of robot
With.
Description of the drawings
Fig. 1 is the flow chart of the method for the present invention.
Fig. 2 is the structural schematic diagram of mask plate of the present invention.
Drawing reference numeral explanation：The dark spaces 1-；The clear zones 2-.
Specific implementation mode
Present invention will now be described in further detail with reference to the embodiments and the accompanying drawings, but embodiments of the present invention are unlimited
In this.
Embodiment
As shown in Figure 1, incremental angle encoder pattern zero potential reference point coding method of the present invention, includes the following steps：
The zero-bit coding optical grating speculum of S1, the zero-bit coding grating of key light grid and indication grating are symmetrical, by zero-bit coding point
For light transmission coding and impermeable pumped FIR laser, wherein light transmission coding indicates that impermeable pumped FIR laser is indicated with 0 with 1, each coding corresponding one
A key light grid width, first with random sequence coding light transmission coding 1 and impermeable pumped FIR laser 0；
S2, the zero-bit that key light grid under random coded are simulated by Orthogonal Composite encode grating and the zero-bit of indication grating encodes
Light transmission situation when grating relative motion, first the first row and first row light transmission coding 1 and impermeable pumped FIR laser 0 put in order according to
According to random coded sequence before.Then the row in first row where all codings 1 is all pressed random coded sequential encoding light transmission and is compiled
Code 1 and impermeable pumped FIR laser 0, then calculate the sum of all numbers diagonal with it in the digital and its above each row of often row tail；
S3, the sequence that 1 and impermeable pumped FIR laser 0 are encoded by adjusting light transmission so that in addition to last column, other each rows calculate
1/3 with no more than light transmission coding sum of gained；
S4, simulation the result shows that caused by final zero-bit coding grating according to the method establishment zero in zero signal
Position trigger signal only accounts for 1 and measures step pitch (i.e. 1 key light grid width), and the signal strength at remaining moment is no more than zero-bit and touches
The zero signal feature conveniently accurately identified, i.e. signal strength are set up gradually, slowly in the 1/3 of signalling intensity according to this
Enhance, and make signal rapidly in zero signal trigger position to enhance suitable of short duration and sufficient intensity the signal of formation, to obtain
Obtain accurate zero message；
S5, determine that zero-bit code length and position, zero-bit code length are the product for encoding sum and key light grid width,
It puts in order calculating and to arrange zero-bit coding grating in mask plate bright according to finally determining light transmission coding 1 and impermeable pumped FIR laser 0
The relative position and width in area and dark space, the zero-bit coding single clear zone width of grating are that the continuous light transmission of corresponding coding section is compiled
The product of yardage and key light grid width, it is corresponding coding section continuously opaque volume that zero-bit, which encodes the single dark space width of grating,
The product of yardage and key light grid width, zero-bit coding grating position then chooses close to key light grid and facilitate install optoelectronic scanning and
The position of photoelectric induction device；
S6, grating is encoded to obtain required zero-bit.
Present embodiment adopts the following technical scheme that：Coding sum is 340 numbers, and 1 is that light transmission encodes and 0 is impermeable
1 sum of pumped FIR laser, wherein light transmission coding is 74 numbers.The zero-bit encoded light of key light grid under random coded is simulated by Orthogonal Composite
The zero-bit of grid and indication grating encodes light transmission situation when grating relative motion, by adjusting light transmission coding 1 and impermeable pumped FIR laser 0
Sequence so that in addition to last column, other each Hang mantissa and its more than the sum of all numbers diagonal with it in each row all
No more than 23.Zero-bit code length is the product for encoding sum and key light grid width, and 1 He is encoded according to finally determining light transmission
Impermeable pumped FIR laser 0, which puts in order, calculating and arranges the relative position and width in zero locatino grating clear zone and dark space in mask plate, zero-bit
The coding single clear zone width of grating is the product of corresponding coding section continuous light transmission coded number and key light grid width, and zero-bit is compiled
The code single dark space width of grating is the product of corresponding coding section continuously opaque coded number and key light grid width, zero-bit volume
Then choose the position for facilitating installation optoelectronic scanning and photoelectric induction device close to key light grid in the position of code grating.Knot is calculated according to this
Fruit obtains required zero-bit and encodes grating.Light transmission encodes and the layout form of impermeable pumped FIR laser is as shown in table 1：
1 light transmission of table encodes and the establishment table of impermeable pumped FIR laser
| 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | ||
| 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | ||
| 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | ||
| 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | ||
| 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | ||
| 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | ||
| 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | ||
| 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | ||
| 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | ||
| 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | ||
| 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | ||
| 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | ||
| 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 |
As can be known from the above table, coding sum is 340 numbers, and 1 is that light transmission encodes and 0 is impermeable pumped FIR laser, wherein light transmission coding 1
Sum is 74 numbers.
As shown in Fig. 2, being according to the zero reference point mask plate form that this coding method is worked out：It includes 2 He of clear zone
Dark space 1；The clear zone 2 and the setting of the interval of dark space 1, clear zone 2 are arranged on the both sides of printing template, and intermediate region is a clear zone 2
One dark space 1 in interval is arranged in order；The clear zone 2 is 30, and dark space 1 is 29, and entire code area accounts for 1.47 °.
Further, the clear zone 2, the printing form of dark space 1 are as follows：Direction is followed successively by the from left to right according to coding 1-59
One 0.01 ° of clear zone, 0.05 ° of the first dark space, 0.02 ° of the second clear zone, 0.04 ° of the second dark space, 0.01 ° of third clear zone, third dark space
0.04 °, 0.01 ° of the 4th clear zone, 0.03 ° of the 4th dark space, 0.01 ° of the 5th clear zone, 0.04 ° of the 5th dark space, 0.02 ° of the 6th clear zone,
It is 6th 0.02 ° of dark space, 0.01 ° of the 7th clear zone, 0.03 ° of the 7th dark space, 0.01 ° of the 8th clear zone, 0.03 ° of the 8th dark space, the 9th bright
0.02 ° of area, 0.03 ° of the 9th dark space, 0.01 ° of the tenth clear zone, 0.04 ° of the tenth dark space, 0.01 ° of the 11st clear zone, the 11st dark space
0.04 °, 0.01 ° of the 12nd clear zone, 0.05 ° of the 12nd dark space, 0.02 ° of the 13rd clear zone, 0.01 ° of the 13rd dark space, the 14th
0.01 ° of clear zone, 0.04 ° of the 14th dark space, 0.01 ° of the 15th clear zone, 0.05 ° of the 15th dark space, 0.01 ° of the 16th clear zone,
16 0.05 ° of dark spaces, 0.01 ° of the 17th clear zone, 0.03 ° of the 17th dark space, 0.02 ° of the 18th clear zone, the 18th dark space
0.05 °, 0.01 ° of the 19th clear zone, 0.03 ° of the 19th dark space, 0.01 ° of the 20th clear zone, 0.05 ° of the 20th dark space, the 20th
It is one 0.01 ° of clear zone, 0.04 ° of the 21st dark space, 0.02 ° of the 22nd clear zone, 0.05 ° of the 22nd dark space, the 23rd bright
0.01 ° of area, the 23rd ° of dark space, 0.02 ° of the 24th clear zone, 0.04 ° of the 24th dark space, the 25th clear zone
0.01 °, 0.02 ° of the 25th dark space, 0.03 ° of the 26th clear zone, 0.04 ° of the 26th dark space, the 27th clear zone
0.01 °, 0.03 ° of the 27th dark space, 0.01 ° of the 28th clear zone, 0.03 ° of the 28th dark space, the 29th clear zone
0.01 °, 0.03 ° of the 29th dark space, 0.01 ° of the 30th clear zone.
With the above structure, the present invention has the beneficial effect that：Coding method is simple and effective, and by digital crossover combines
At data mapping can Fast simulation obtain according to this coding printing coding generate zero signal feature.The grating printed according to this
Zero-bit coding is short, and the zero signal characteristic remarkable of generation, intensity gradually, slowly enhances, and in zero signal trigger bit
Setting, which makes signal rapidly, enhances suitable of short duration and sufficient intensity the signal of formation, can accurately read the zero message of grating, with
Application of the fit angle encoder in joint of robot.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, it is other it is any without departing from the spirit and principles of the present invention made by changes, modifications, substitutions, combinations, simplifications,
Equivalent substitute mode is should be, is included within the scope of the present invention.
Claims (6)
1. a kind of incremental angle encoder pattern zero potential reference point coding method, which is characterized in that include the following steps：
S1, the coding grating zero-bit minute surface that the zero-bit of key light grid is encoded to grating and indication grating are symmetrical arranged, and zero-bit are compiled
Code is divided into light transmission coding and impermeable pumped FIR laser, and wherein light transmission coding indicates that impermeable pumped FIR laser is indicated with 0 with 1, each coding pair
A key light grid width is answered, first with random sequence coding light transmission coding 1 and impermeable pumped FIR laser 0；
S2, the zero-bit that key light grid under random coded are simulated by Orthogonal Composite encode grating and the zero-bit of indication grating encodes grating
Light transmission situation when relative motion, specifically includes following the description：
The light transmission coding 1 and impermeable pumped FIR laser 0 of S21, the first row and first row put in order the sequence of the random coded before foundation；
Row in S22, first row where all codings 1 all presses random coded sequential encoding light transmission coding 1 and impermeable pumped FIR laser 0；
S23, the sum of all numbers diagonal with it in the digital and its above each row of often row tail are calculated；
S3, the sequence that 1 and impermeable pumped FIR laser 0 are encoded by adjusting light transmission so that in addition to last column, other each row tails numbers
And its all numbers the sum of diagonal with it are no more than the 1/3 of light transmission coding sum in above each row；
S4, simulation the result shows that zero-bit is touched in zero signal caused by final zero-bit coding grating according to the method establishment
Signalling only accounts for 1 measurement step pitch, and the signal strength at remaining moment is no more than the 1/3 of zero-bit trigger signal intensity；According to this
The zero signal feature conveniently accurately identified is set up, i.e. signal strength gradually, slowly enhances, and is triggered in zero signal
Position, which makes signal rapidly, enhances suitable of short duration and sufficient intensity the signal of formation, to obtain accurate zero message；
S5, determine that zero-bit code length and position, zero-bit code length are the product for encoding sum and key light grid width；
S6, grating is encoded to obtain required zero-bit.
2. incremental angle encoder pattern zero potential reference point coding method according to claim 1, which is characterized in that step
In rapid S4, it is 1 key light grid width that 1, which measures step pitch,.
3. incremental angle encoder pattern zero potential reference point coding method according to claim 1, which is characterized in that step
In rapid S5, determine that the specific method of zero-bit code length and position is：
It is the product for encoding sum and key light grid width that zero-bit, which encodes grating length, and 1 He is encoded according to finally determining light transmission
Impermeable pumped FIR laser 0, which puts in order, calculating and arranges the relative position and width in the coding of zero-bit in mask plate grating clear zone and dark space,
Zero-bit coding the single clear zone width of grating be corresponding coding section continuous light transmission coded number and key light grid width product, zero
The position coding single dark space width of grating is the product of corresponding coding section continuously opaque coded number and key light grid width, and zero
Then choose the position for facilitating installation optoelectronic scanning and photoelectric induction device close to key light grid in the position of position coding grating.
4. incremental angle encoder pattern zero potential reference point coding method according to claim 1, which is characterized in that compile
Code sum is 340, and wherein 1 sum of light transmission coding is 74, is set in addition to last column, other each Hang mantissa and its more than it is each
The sum of all numbers diagonal with it are no more than 23 in row.
5. the mask plate of incremental angle encoder pattern zero potential reference point coding method establishment according to claim 1,
It is characterised in that it includes close to the zero locatino grating substrate of key light grid, the substrate is equipped with clear zone and dark space, the clear zone and dark
The vertical low-angle covering of the fan setting in area, and the clear zone and the setting of dark space interval, the clear zone are arranged in the left and right sides of mask plate,
Intermediate region is that one, clear zone interval dark space is arranged in order；The clear zone is 30, and dark space is 29, and entire code area accounts for
1.47°。
6. the mask plate of incremental angle encoder pattern zero potential reference point coding method establishment according to claim 5,
It is characterized in that, the printing form in the clear zone, dark space is as follows：Direction is followed successively by the first clear zone from left to right according to coding 1-59
0.01 °, 0.05 ° of the first dark space, 0.02 ° of the second clear zone, 0.04 ° of the second dark space, 0.01 ° of third clear zone, 0.04 ° of third dark space,
4th 0.01 ° of clear zone, 0.03 ° of the 4th dark space, 0.01 ° of the 5th clear zone, 0.04 ° of the 5th dark space, 0.02 ° of the 6th clear zone, the 6th are secretly
0.02 ° of area, 0.01 ° of the 7th clear zone, 0.03 ° of the 7th dark space, 0.01 ° of the 8th clear zone, 0.03 ° of the 8th dark space, the 9th clear zone
0.02 °, 0.03 ° of the 9th dark space, 0.01 ° of the tenth clear zone, 0.04 ° of the tenth dark space, 0.01 ° of the 11st clear zone, the 11st dark space
0.04 °, 0.01 ° of the 12nd clear zone, 0.05 ° of the 12nd dark space, 0.02 ° of the 13rd clear zone, 0.01 ° of the 13rd dark space, the 14th
0.01 ° of clear zone, 0.04 ° of the 14th dark space, 0.01 ° of the 15th clear zone, 0.05 ° of the 15th dark space, 0.01 ° of the 16th clear zone,
16 0.05 ° of dark spaces, 0.01 ° of the 17th clear zone, 0.03 ° of the 17th dark space, 0.02 ° of the 18th clear zone, the 18th dark space
0.05 °, 0.01 ° of the 19th clear zone, 0.03 ° of the 19th dark space, 0.01 ° of the 20th clear zone, 0.05 ° of the 20th dark space, the 20th
It is one 0.01 ° of clear zone, 0.04 ° of the 21st dark space, 0.02 ° of the 22nd clear zone, 0.05 ° of the 22nd dark space, the 23rd bright
0.01 ° of area, the 23rd ° of dark space, 0.02 ° of the 24th clear zone, 0.04 ° of the 24th dark space, the 25th clear zone
0.01 °, 0.02 ° of the 25th dark space, 0.03 ° of the 26th clear zone, 0.04 ° of the 26th dark space, the 27th clear zone
0.01 °, 0.03 ° of the 27th dark space, 0.01 ° of the 28th clear zone, 0.03 ° of the 28th dark space, the 29th clear zone
0.01 °, 0.03 ° of the 29th dark space, 0.01 ° of the 30th clear zone.
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| DE112019004545T5 (en) * | 2019-04-23 | 2021-05-20 | Han's Laser Technology Industry Group Co., Ltd. | GRID DISC AND FEEDBACK SYSTEM |
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| CN2320984Y (en) * | 1997-12-05 | 1999-05-26 | 中国科学院紫金山天文台 | Circular grating coder with image area code |
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