CN104573600B - A kind of recognition methods based on static wheeled coding - Google Patents
A kind of recognition methods based on static wheeled coding Download PDFInfo
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Abstract
The high recognition methods based on static wheeled coding of simple and precision is decoded the invention discloses a kind of；The recognition methods includes coding step S and decoding step P, namely character wheel is currently presented in the continuous programming code information of scanning area by this method using static surface sweeping mode again by being encoded on character wheel, and coding information is converted to by square-wave signal using photo electric scanning, the width of square-wave signal is converted to by continuous data signal by single-chip microcomputer again, so as to realize accurate measurement, suitable for the angular surveying of wheeled target rotation, and this method has the advantages of decoding is simple, and the degree of accuracy is high.
Description
Technical field
The invention belongs to Bar Code field, specifically disclose it is a kind of decode accurately and non-blind area based on static wheel
The recognition methods of formula coding.
Background technology
In the prior art, character wheel coding information is generally acquired with barcode scanner, wherein barcode scanner principle
System by scanner system, signal shaping, decoding three parts form.Scanning system is by optical system and optical-electrical converter group
Into to complete optical scanner to bar code symbol, and by photodetector, the optical signal of bar code-bar null pattern being converted into
Electric signal；Signal shaping part is amplified by signal, filtered, waveform shaping forms, and its function is the optoelectronic scanning of bar code
Signal transacting turns into the square-wave signal of normal potential, and the width of its low and high level and the bar sky size of bar code symbol are corresponding；
Decoding portion is typically made up of embedded microprocessor, and its function is exactly to enter row decoding to the square-wave signal of bar code, and it is tied
Fruit is output to the data terminal in bar code application system by interface circuit.
In actual use, the scanner employs one-dimension code technology, and can not be realized for existing wheeled one-dimension code
Decoding.As a patent document discloses a kind of circumference code channel decoding method judged based on absolute position（Publication No.
CN103134532A）, this method by rotating character wheel, then being scanned and corresponding code section character and then being added up with this,
So as to obtain the cumulative code progress location determination in position by calculating.But the coding code channel described in this method is in practical application
Middle detection " blind area " to be present, there is the imperfect problem of initial code in decoding when removing initial code.So as to can not character wheel accomplish that decoding is accurate
Phenomenon that is true and avoiding non-blind area.
The content of the invention
In view of this, object of the present invention is to provide it is a kind of decode accurately and non-blind area based on the wheeled coding of static state
Recognition methods, be directed to wheeled target rotation so as to solve and can not realize and completely decode and decode accurate technical problem.
In order to achieve the above object, the invention provides a kind of recognition methods based on static wheeled coding, including coding
Step S and decoding step P, wherein, the decoding step P includes：
P1, with photoelectric scanner scanning continuous programming code containing black and white strip on the static character wheel, and the continuous volume
Code has m positions code, and is converted to square-wave signal, wherein each code actual scanning width isWherein n is the sequence number of code each encoded, and 0<N≤a, a are each coding
Code number, BW is theoretical sweep length；
P2, the width of square-wave signal is scaled by continuous data signal by single-chip microcomputer again, its specific steps includes：
P21, from middle part, selection left and right either direction finds code of continuous two codes for binary one successively, wherein,
It is assumed that the end code of a upper coding and the initial code of this coding；
P22, step back again（a-2）Position area code, and judge whether the code that continuous two codes are binary one；
If P23, step P22 judged result are yes, described to step back（a-2）Position area code is the effective digital of coding
Code；Otherwise step P21 is continued;
P24, the effective digital code in step P23 compared with the digital code numbering stored in single-chip microcomputer, it is final to read
Go out current character wheel reading.
Preferably, the coding step S includes：
S1, the circumferential edges of character wheel are divided into ten equal portions, represent a coding per decile, " 0 " to " 9 " ten numerals according to
Secondary correspondence each encodes, wherein the radian each encoded is 36 °；
S2, each coding is set to be made up of initial code, digital code and end code, wherein initial code and end generation
Code is binary code " 1 ", is had between initial code and end code（a-2）Individual digital code, a are the code each encoded
Number；
S3, each coding is divided into a equidistant region again, wherein radian corresponding to per region is 36 °/a, and every
Black streaking is printed on individual region or informal voucher line to form coding information to combine, and wherein black and white bar code represents binary code respectively
" 0 " and " 1 ".
Preferably, the width of the square-wave signal is the center zw according to each code actual scanning widthnCome
It is determined that it calculates zwnFormula it is as follows：
Wherein n is the sequence number of the code each encoded, and m is the code number of the continuous programming code.
Preferably, the theoretical scanning overall width is the π R/ (10a) of BW=2, and R is the radius of character wheel, and a is the generation each encoded
Yardage.
Further, the code of the sequence number n of the code each encoded, the code number a that each encodes and continuous programming code
Number m meets：0 ＜ n≤a≤m, and a ＞ 2.
The beneficial effect of the present invention compared with prior art：By being encoded on character wheel to use static surface sweeping mode again
Character wheel is currently presented in the continuous programming code information of scanning area, and coding information is converted to by rectangle using photo electric scanning
Ripple signal, then the width of square-wave signal is converted to by continuous data signal by single-chip microcomputer, so as to realize accurate measurement, fit
For the angular surveying of wheeled target rotation, and this method has the advantages of decoding is simple, and the degree of accuracy is high.
Brief description of the drawings
Fig. 1 is the flow chart of the recognition methods of the present invention based on static wheeled coding.
Fig. 2 is the particular flow sheet of the coding step of the recognition methods of the present invention based on static wheeled coding.
Fig. 3 is that the continuous programming code schematic diagram on character wheel is scanned described in Fig. 1.
Fig. 4 is the number axis schematic diagram of square wave information described in Fig. 1.
Fig. 5 is the particular flow sheet of step P2 in Fig. 1.
Fig. 6 is the scanning area schematic diagram of the embodiments of Fig. 5 mono-.
Fig. 7 is the scanning area schematic diagram of another embodiments of Fig. 5.
In figure, 100- character wheels, 101- codes, Q- scanning areas.
Embodiment
There is further understanding with understanding for ease of the technological means to the present invention and operation, hereby match somebody with somebody for embodiment
Schema is closed, is described in detail as follows.
As depicted in figs. 1 and 2, the invention provides a kind of recognition methods based on static wheeled coding, including coding step
Rapid S and decoding step P.Wherein, the coding step S includes：
S1, the circumferential edges of character wheel 100 are divided into ten equal portions, a coding, " 0 " to " 9 " ten numbers are represented per decile
Word is corresponding in turn to each coding, wherein the radian each encoded is 36 °.
S2, each coding is set to be made up of initial code, digital code and end code, wherein initial code and end generation
Code is binary code " 1 ", is had between initial code and end code（a-2）Individual digital code, a are the code each encoded
Number.
S3, each coding is divided into a equidistant region again, wherein radian corresponding to per region is 36 °/a, and every
Black streaking is printed on individual region or informal voucher line to form coding information to combine, and wherein black and white bar code represents binary code respectively
" 0 " and " 1 ".
As shown in Figure 3 and Figure 4, the decoding step P includes：
P1, with photoelectric scanner scanning continuous programming code containing black and white strip on the static character wheel 100, and this is continuous
Coding has m positions code 101, and is converted to square-wave signal, wherein each code actual scanning width isWherein n is the sequence number of code each encoded, and 0<N≤a, a are each coding
Code number, BW is theoretical sweep length.Such as：The code number a each encoded is 6, each code actual scanning width
For：
rw1=BW×cos(36°)≈BW×0.809,
rw2=BW × cos (30 °) ≈ BW × 0.866,
……
It can similarly obtain：
rw7=BW ... ..., rw12≈ BW × 0.866, rw13≈BW×0.809。
As shown in figure 4, the feature for the square-wave signal width that the scanner actual scanning comes out is narrow for middle wide both sides.
The width of the square-wave signal is the center zw according to each code actual scanning widthnTo determine, its
Calculate zwnFormula it is as follows：
Wherein n is the sequence number of the code each encoded, and m is the code number of the continuous programming code.Such as：The generation each encoded
Yardage a is 6, and the code number m for scanning the continuous programming code of gained is 13, and assumes the theoretical sweep length for the π R/ of BW=2
(10a)=1, then after single-chip microcomputer computing, the center of each code actual scanning width is drawn, shown in table 1 specific as follows.
Table 1 is the center distribution table of each code actual scanning width
P2, the width of square-wave signal is scaled by continuous data signal by single-chip microcomputer again, with reference to shown in Fig. 5, its
Specific steps include：
P21, from middle part, selection left and right either direction finds code of continuous two codes for binary one successively, wherein,
It is assumed that the end code of a upper coding and the initial code of this coding；
P22, step back again（a-2）Position area code, and judge whether the code that continuous two codes are binary one；
If P23, step P22 judged result are yes, described to step back（a-2）Position area code is the effective digital of coding
Code；Otherwise step P21 is continued;
P24, the effective digital code in step P23 compared with the digital code numbering stored in single-chip microcomputer, it is final to read
Go out current character wheel reading.Wherein table 2 is the digital code number table and is free of initial code and end code, table specific as follows
Shown in 2.
Table 2 is the digital code（And be free of initial code and end code）Number table
| Numeral | Coding | Numeral | Coding | Numeral | Coding | Numeral | Coding | Numeral | Coding |
| 0 | 1010 | 2 | 0100 | 4 | 0010 | 6 | 0001 | 8 | 0011 |
| 1 | 0101 | 3 | 1001 | 5 | 1100 | 7 | 1000 | 9 | 0110 |
Such as：The code number a each encoded is 6, and the code number m for scanning the continuous programming code of gained is 13, when character wheel turns
When moving half, situation about enumerating between 0~1 numeral, specific verification process is as follows：
Citing 1：
Shown in reference picture 6, coding information generation after the scanning area Q is expressed as being close to wheel digital " 0 " on one side and read
Code is 1110101101011, shown in table 1 specific as follows.
Table 3 is the code reordering table by taking 13 input bits as an example
| Code | 1 | 1 | 1 | 0 | 1 | 0 | 1 | 1 | 0 | 1 | 0 | 1 | 1 |
| Sequence number | D-6 | D-5 | D-4 | D-3 | D-2 | D-1 | D0 | D1 | D2 | D3 | D4 | D5 | D6 |
It is concretely comprised the following steps：
Step P21, D-4 and D-5 is simultaneously binary one, it is assumed that D-5 is the end code of upper one coding, and D-4 is this volume
The initial code of code；
Step P22, postpone 4, be binary one during D1 with D2 differences；
Step P23, judge that coding information code " 0101 " corresponding to D-3~D0 is not valid code, then return to step P21
D-5 and D-6 are sought to the left while be binary one, it is assumed that D-5 is the end code of upper one coding, and D-4 is the starting generation of this coding
Code；Step P22 is carried out again, be that is to say and is postponed 4 again, D0 and D1 are simultaneously binary one, and judge D3~D6 coding information generations
Code " 1010 " is valid code.
Step P24, effective digital code compares with the digital code numbering shown in table 2, and final decoding obtains numeral 0.
Citing 2：
Shown in reference picture 7, coding information generation after the scanning area Q is expressed as deviateing wheel digital " 0 " on one side and read
Code is 1101011010111, shown in table 4 specific as follows.
Table 4 is the code reordering table by taking 13 input bits as an example
| Code | 1 | 1 | 0 | 1 | 0 | 1 | 1 | 0 | 1 | 0 | 1 | 1 | 1 |
| Sequence number | D-6 | D-5 | D-4 | D-3 | D-2 | D-1 | D0 | D1 | D2 | D3 | D4 | D5 | D6 |
It is concretely comprised the following steps：
Step P21, D-1 and D0 is simultaneously binary one, it is assumed that D-1 is the end code of upper one coding, and D0 is this coding
Initial code；
Step P22,4 are postponed, D5 and D6 are simultaneously binary one；
Step P23, judge that coding information code " 0101 " corresponding to D1~D4 is valid code；
Step P24, coding information code corresponding to D1~D4 and the digital code numbering shown in table 2 are compared, finally
Decoding obtains numeral 1.
Can be seen that through the example above checking, the present invention can evade character wheel go between two numerals caused by misread or can not
The phenomenon of reading.
Wherein, the theoretical sweep length is the π R/ (10a) of BW=2, and R is the radius of character wheel, and a is the code each encoded
Number.
The sequence number n of the code each encoded, the code number a each encoded and continuous programming code code number m meet：
0 ＜ n≤a≤m, and a ＞ 2.
Character wheel is currently presented in scanning area by the present invention using static surface sweeping mode again by being encoded on character wheel
Continuous programming code information, and coding information is converted to by square-wave signal using photo electric scanning, then by single-chip microcomputer by square
The width of shape ripple signal is converted to continuous data signal, so as to realize accurate measurement, suitable for the angle of wheeled target rotation
Measurement, and this method has the advantages of decoding is simple, and the degree of accuracy is high.
Only it is the preferred embodiment of the present invention in summary.It should be pointed out that come for one of ordinary skill in the art
Say, under the premise without departing from the principles of the invention, some variations and modifications can also be made, these also should be regarded as belonging to the present invention
Protection domain.
Claims (4)
1. a kind of recognition methods based on static wheeled coding, including coding step S and decoding step P, it is characterised in that described
Decoding step P includes：
P1, with photoelectric scanner scanning continuous programming code containing black and white strip on the static character wheel (100), and the continuous volume
Code has m positions code (102), and is converted to square-wave signal, wherein each code actual scanning width isWherein n is the sequence number of code each encoded, and 0<N≤a, a are each coding
Code number, BW is theoretical sweep length；
P2, the width of square-wave signal is scaled by continuous data signal by single-chip microcomputer again, its specific steps includes：
P21, from middle part, selection left and right either direction finds code of continuous two codes for binary one successively, wherein it is assumed that
The initial code of end code and this coding for upper one coding；
P22, (a-2) position code is stepped back again, and judge whether the code that continuous two codes are binary one；
It is described to step back effective digital code of (a-2) position code for coding if P23, step P22 judged result are yes；It is no
Then continue step P21；
P24, the effective digital code in step P23 compared with the digital code numbering stored in single-chip microcomputer, final read is worked as
Preceding character wheel reading；
The coding step S includes：
S1, the circumferential edges of character wheel (100) are divided into ten equal portions, a coding, " 0 " to " 9 " ten numerals are represented per decile
Each coding is corresponding in turn to, wherein the radian each encoded is 36 °；
S2, each coding is set to be made up of initial code, digital code and end code, wherein initial code and end code is equal
For binary code " 1 ", there is (a-2) individual digital code between initial code and end code, a is the code each encoded
(101) number；
S3, each coding is divided into a equidistant region again, wherein radian corresponding to per region is 36 °/a, and in each area
Black streaking or informal voucher line is printed on domain to form coding information to combine, wherein black and white bar code represent respectively binary code " 0 " and
“1”。
2. the recognition methods according to claim 1 based on static wheeled coding, it is characterised in that the square-wave signal
Width be center zw according to each code (101) actual scanning widthnTo determine, it calculates zwnFormula it is as follows：
Wherein n is the sequence number of the code each encoded, and m is the code of the continuous programming code
Number.
3. the recognition methods according to claim 1 based on static wheeled coding, it is characterised in that the theoretical scanning is total
Width is BW=2 π R/ (10a), and R is the radius of character wheel, and a is code (101) number each encoded.
4. the recognition methods based on static wheeled coding according to claims 1 to 3 any one, it is characterised in that institute
State sequence number n, the code number a each encoded of the code (101) of each coding and code (101) number m of continuous programming code meets：
0 ＜ n≤a≤m, and a ＞ 2.
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| CN110245535B (en) * | 2016-11-19 | 2022-06-28 | 哈尔滨理工大学 | Coding inner layer structure |
| CN110928996A (en) * | 2019-11-29 | 2020-03-27 | 北大方正集团有限公司 | Formula serial number checking system, method, device and computer readable storage medium |
| CN111368576B (en) * | 2020-03-12 | 2023-04-21 | 成都信息工程大学 | Global optimization-based Code128 bar Code automatic reading method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1493853A (en) * | 2003-10-10 | 2004-05-05 | 杨俊志 | Universal coding method of single loop absolute type angle coder |
| CN101476902A (en) * | 2009-01-13 | 2009-07-08 | 常州大地测绘科技有限公司 | Single-code channel absolute position encoding method |
| CN102003976A (en) * | 2010-08-27 | 2011-04-06 | 中国科学院长春光学精密机械与物理研究所 | Single-code channel absolute position coding method, decoding method and measuring device |
| CN202422192U (en) * | 2011-12-30 | 2012-09-05 | 成都市三宇仪表科技发展有限公司 | Coding print wheel for photoelectric direct-reading meter counter |
| CN103134532A (en) * | 2013-02-07 | 2013-06-05 | 大连民族学院 | Circumferential code channel coding and decoding method based on judgment to absolute position |
-
2013
- 2013-10-24 CN CN201310504146.5A patent/CN104573600B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1493853A (en) * | 2003-10-10 | 2004-05-05 | 杨俊志 | Universal coding method of single loop absolute type angle coder |
| CN101476902A (en) * | 2009-01-13 | 2009-07-08 | 常州大地测绘科技有限公司 | Single-code channel absolute position encoding method |
| CN102003976A (en) * | 2010-08-27 | 2011-04-06 | 中国科学院长春光学精密机械与物理研究所 | Single-code channel absolute position coding method, decoding method and measuring device |
| CN202422192U (en) * | 2011-12-30 | 2012-09-05 | 成都市三宇仪表科技发展有限公司 | Coding print wheel for photoelectric direct-reading meter counter |
| CN103134532A (en) * | 2013-02-07 | 2013-06-05 | 大连民族学院 | Circumferential code channel coding and decoding method based on judgment to absolute position |
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