CN108009617B - Two-dimensional matrix lattice based on BCD (binary coded decimal) codes for hub tracing and generation method thereof - Google Patents
Two-dimensional matrix lattice based on BCD (binary coded decimal) codes for hub tracing and generation method thereof Download PDFInfo
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
- G06K19/06037—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking multi-dimensional coding
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
- G06K19/06046—Constructional details
- G06K19/06075—Constructional details the marking containing means for error correction
Abstract
The invention relates to the field of artificial intelligence and automatic control, and discloses a two-dimensional matrix lattice based on BCD (binary coded decimal) codes for hub tracing, which comprises the following components: the device comprises a direction code, a check code and a plurality of code text units. The direction code is positioned at the upper left corner of the two-dimensional matrix lattice and is used for representing the identification direction of the code text unit. The check code is positioned at the last bit of the two-dimensional matrix lattice and is used for detecting the correctness of the code text unit or correcting the misread code text unit. And the plurality of code text units are sequentially positioned at the rest positions of the two-dimensional matrix lattice and are used for representing hub tracing information. The code text unit, the direction code and the check code are all in a 2 x 2 lattice structure. The two-dimensional matrix lattice based on the BCD codes for hub tracing is simple in structure and high in identifiability; the method can be increased, decreased, adjusted and deformed according to actual requirements, and is suitable for the requirements of code text coating, engraving and detection under various complex conditions; the device has a check code and certain error prevention and correction capability.
Description
Technical Field
The invention relates to the automobile manufacturing industry, in particular to a two-dimensional matrix lattice based on BCD codes for hub tracing and a generation method thereof.
Background
With the development of the automobile industry, the automobile part manufacturing industry is also developed at a high speed, wherein the hub manufacturing industry is developed most rapidly, so that the quality tracing of products in the hub industry is particularly critical, the hub tracing system is firstly developed in a mode of using an artificial steel number to number the hub, but the information content in the hub is very small, as shown in fig. 1, the hub is only limited to the internal circulation of a factory, the traceability is not high, the hub can only be traced to casting shifts generally, the workload of the artificial steel number marking is large, the working content is tedious, the damage rate of a marking tool is very high, and the phenomenon of industrial injury is frequent.
With the development of information technology and the maturity of two-dimensional Code technology, a large number of automobile factories begin to require that factories use QR two-dimensional codes (QR codes) to trace back hubs. The QR two-dimensional code records data symbol information by black and white figures distributed on a plane (two-dimensional direction) according to a certain rule by using a certain specific geometric figure. However, after tests, the QR two-dimensional code in the traditional form cannot meet various hubs with various models, as shown in fig. 2 and 3. Compared with other automobile parts, the hub manufacturing process has particularity which is mainly expressed in the aspects of environment temperature, equipment temperature, casting workpiece temperature, surface treatment mode, irregular weight-reducing pit size depth and the like. Some problems which cannot be solved or can be solved only with extremely high cost in the prior art appear in the QR two-dimensional code, for example: QR two-dimensional code is very high to marking the position demand, but the wheel hub subtracts and can't provide enough space in the heavy nest, if mark by force, the little later stage of sign indicating number text is difficult to discern, as shown in figure 4. When the QR two-dimensional code uses the dot matrix to beat standard, the requirement of counting is too high, can't satisfy the beat requirement of mill, and it is big to count many simultaneously and just means to beat the mark back QR two-dimensional code area, and a lot of wheel hub flanges subtract heavy nest and spoke and subtract heavy nest and can't provide effectual mark space of beating. In addition, the traditional QR two-dimensional code can only use a matrix form, the modeling is rigid, the flexibility is avoided, the marking time is long, the post-processing code text is damaged, and the marking tool is high in manufacturing cost.
Therefore, a two-dimensional matrix lattice based on BCD coding for hub tracing, which has a simple structure, high identifiability, high flexibility, easy marking and no influence on later code text content identification, and can be deformed according to the shape and size of a specific weight reduction pit, is urgently needed.
Disclosure of Invention
The invention aims to provide a two-dimensional matrix lattice based on BCD codes for hub tracing and a generation method thereof, and aims to solve the problems that the traditional QR two-dimensional code is large in area, only can use matrix form, is rigid in modeling and free of flexibility, a large number of hub flange weight reducing pits and spoke weight reducing pits cannot provide effective marking space, the marking time is long, and the post-processing code text is damaged.
In order to solve the technical problem, the embodiment of the invention discloses a method for generating a two-dimensional matrix lattice based on BCD (binary coded decimal) codes for hub tracing, which comprises the following steps of:
encoding the traceability information of the hub into a digital combination comprising a plurality of numbers;
BCD coding is carried out on a plurality of digits in the digit combination respectively, so that a plurality of BCD codes are generated;
respectively converting the BCD codes into code text units of a preset 2 x 2 lattice structure, wherein one BCD code uniquely corresponds to one 2 x 2 lattice structure;
taking a 2 x 2 lattice structure with 4 points as a direction code, and placing the direction code at the upper left corner of the two-dimensional matrix lattice;
calculating the direction code and all code text units to obtain a check code with a 2 x 2 lattice structure, and placing the check code at the last bit of the two-dimensional matrix lattice;
and sequentially placing the code text units on the rest positions of the two-dimensional matrix lattice so as to form the complete two-dimensional matrix lattice.
The embodiment of the invention also discloses a two-dimensional matrix lattice based on BCD codes for hub tracing, which comprises the following steps: the direction code, the check code and the plurality of code text units;
the direction code is positioned at the upper left corner of the two-dimensional matrix lattice and used for representing the identification direction of the code text unit;
the check code is positioned at the last bit of the two-dimensional matrix lattice and is used for detecting the correctness of the code text unit or correcting the misread code text unit;
the plurality of code text units are sequentially located at the rest positions of the two-dimensional matrix lattice and are used for representing the hub tracing information;
the code text unit is a 2 x 2 lattice structure converted from BCD codes, the BCD codes are generated by BCD coding from numbers 0 to 9, and one BCD code is preset to uniquely correspond to one 2 x 2 lattice structure;
the direction code is a 2 x 2 lattice structure with 4 points;
the check code is a 2 x 2 lattice structure obtained by the operation of the direction code and all code text units.
Compared with the prior art, the implementation mode of the invention has the main differences and the effects that:
the tracing information of the hub is coded into a two-dimensional matrix lattice based on BCD coding, the structure is simple, and the identifiability is high; the method can be increased, decreased, adjusted and deformed according to actual requirements, and is suitable for the requirements of code text coating, engraving and detection under various complex conditions; the device has a check code and certain error prevention and correction capability.
Furthermore, the hub tracing uses a two-dimensional matrix lattice based on BCD coding, has high flexibility, can deform according to the shape and size of a specific weight-reducing pit, and does not influence the recognition of code text content in the later period.
Furthermore, the code text content is a dot matrix, after marking, due to the fact that marking is conducted in a physical mode, the code text points are deep and clear, the code text point marking method is completely suitable for all processes in the hub production and machining process, and after all the processes are completed, the code text content is still clear and free of damage.
Furthermore, the coding rule is simple, the requirements on the number of points and the shape of the code text are low, the marking operation can be completed only in a very short time, and the hub can be suitable for various types of hubs in a deformation mode without carrying out secondary design on the hubs.
Drawings
FIG. 1 is a schematic illustration of numbering on a hub in the form of manually numbering steel grades;
FIG. 2 is a schematic view of a hub;
FIG. 3 is a schematic view of another hub;
FIG. 4 is a schematic view of a marked QR two-dimensional code on a hub;
fig. 5 is a schematic flow chart of a method for generating a BCD-code-based two-dimensional matrix lattice for hub tracing according to a first embodiment of the present invention;
FIG. 6 is a diagram of a code word unit corresponding to decimal digits 0 through 9;
FIG. 7 is a basic structure and layout of a two-dimensional matrix lattice based on BCD coding for hub tracing;
FIG. 8 is a modified layout of the two-dimensional matrix lattice for hub traceability based on BCD coding shown in FIG. 7;
fig. 9 is another modified layout of the two-dimensional matrix lattice for hub traceability based on BCD encoding shown in fig. 7.
Detailed Description
In the following description, numerous technical details are set forth in order to provide a better understanding of the present application. However, it will be understood by those skilled in the art that the technical solutions claimed in the present application can be implemented without these technical details and with various changes and modifications based on the following embodiments.
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The first embodiment of the invention relates to a method for generating a two-dimensional matrix lattice based on BCD (binary coded decimal) codes for hub tracing. Fig. 5 is a schematic flow chart of a method for generating a BCD-code-based two-dimensional matrix lattice for hub tracing.
Specifically, as shown in fig. 5, the method for generating the two-dimensional matrix lattice for hub tracing based on BCD coding includes the following steps:
in step 501, the traceability information of the hub is encoded into a numerical combination comprising a plurality of numbers.
Thereafter, step 502 is entered, and a plurality of numbers in the word combination are BCD encoded, respectively, to generate a plurality of BCD codes.
Then, step 503 is performed to convert the multiple BCD codes into a codebook unit with a predetermined 2 × 2 lattice structure, wherein one BCD code uniquely corresponds to one 2 × 2 lattice structure.
The code text units are 2 × 2 lattice structures converted from BCD codes, and the code text units may represent decimal numbers 0 to 9.
In each embodiment of the present invention, a 2 × 2 lattice structure corresponding to a predetermined BCD code is required, and the two are in a one-to-one correspondence relationship.
Preferably, fig. 6 shows a correspondence of a code text unit to decimal numbers 0 to 9. In each embodiment of the present invention, the correspondence relationship shown in fig. 6 is described as an example.
Of course, this is only a preferred embodiment, and in other embodiments of the present invention, the code text units and the decimal numbers 0 to 9 may have another corresponding relationship, which is not limited to this.
Thereafter, step 504 is entered, where a 2 × 2 lattice structure with 4 points is used as a direction code, and the direction code is placed at the upper left corner of the two-dimensional matrix lattice. The direction code is used for representing the identification direction of the code text unit.
Therefore, the direction code is obviously different from the code text unit and the check code and has uniqueness. In addition, any combination of two code text units or combination of one code text unit and the check code cannot form a code text the same as the upper left-corner direction code, so that the identification direction of the code text cannot be influenced.
Then, step 505 is performed to calculate the direction code with all code text units to obtain a check code with a 2 × 2 lattice structure, and the check code is placed at the last bit of the two-dimensional matrix lattice.
In this embodiment, the check code is preferably obtained by performing summation (sum check) or parity determination (parity check) or cyclic redundancy calculation (cyclic redundancy check) on the direction code and all the code words, and can detect the correctness of the code words or correct some of the misread code words.
Then, step 506 is entered, and the code text units are sequentially placed on the remaining positions of the two-dimensional matrix lattice, so as to form a complete two-dimensional matrix lattice.
This flow ends thereafter.
To sum up, the hub tracing uses a two-dimensional matrix lattice based on BCD coding, and the two-dimensional matrix lattice is composed of a direction code, a check code and a plurality of code text units. The code text unit, the direction code and the check code are all in a 2 x 2 lattice structure.
The code text content is a dot matrix, after marking, due to the fact that marking is conducted in a physical mode, code text points are deep and clear, the code text marking method is completely suitable for all processes in the hub production and machining process, and after all the processes are completed, the code text content is still clear and free of damage.
Moreover, the coding rule is simple, the requirements on the number of points and the shape of the code text are low, the marking operation can be completed only in a very short time, and the hub can be suitable for various types of hubs in a deformation mode without carrying out secondary design on the hubs.
The hub tracing uses a two-dimensional matrix lattice based on BCD codes to deform a BCD code corresponding to numbers into a lattice, the minimum number of points represents 10 numbers from 0 to 9, and the structure is simple. The average dot number of the dot matrix code is 1.7, the dot matrix code corresponds to a 7-digit code text, the maximum dot number is 27, the average dot number of the dot matrix code is 8.2, and the maximum dot number is 84, so that the structure is simpler, and the mechanical marking is facilitated. Because the dot matrix has the direction code, and the direction code is a 2 x 2 square matrix, easy to position, carry on the morphological transformation according to the length and width of square matrix, thus position the code text area; and then, the method is divided according to the length and the width of the square matrix unit, and the code text bit stream can be obtained by judging the area of the pixel in the area so as to analyze the code text.
Fig. 7 is a basic structure and layout of a two-dimensional matrix lattice based on BCD coding for hub tracing. Wherein, the first represents the direction code, the second represents the code text unit, and the third represents the check code.
The code text which can be expressed by each code text unit is decimal number from '0' to '9', and is obtained by converting the corresponding relation of BCD codes corresponding to the numbers as shown in figure 6. In addition, in order to prevent the dot matrix blank and enhance the recognizability, the BCD code of "10" can be obtained as 1010 by the BCD code calculation rule, and the number represents the actual number "0".
As shown in fig. 7, wherein the code text "1234579". In particular, if a parity operation method is employed: parity (1) + even (2) + odd (3) + even (4) + odd (5) + odd (7) + odd (9) ═ odd, with 1 being defined as odd and 2 being even, parity (1) is checked.
In particular, if the operation method of sum check is adopted: in fig. 7, if the code word "1234579" indicates that the sum check operation is 1+2+3+4+5+7+ 9-31 (3+1) -4 and the sum check is 4, and if the code word "1111311", the sum check calculation is 1+1+1+1+3+1+ 1-9.
The check code can detect the correctness of the code text or correct part of the misread code text. Specifically, if the check is 6, the check mode is a sum check, the current identification code text is "3333332", the check obtained from the code text is 3+3+3+3+3+ 2-14 (1+4) -5, and the check is inconsistent with the identified check code, so the code text is incorrect; for a sum check of 6, the code word most consistent with the code word "3333332" is "3333333", so that the last code word 2 can be corrected to 3, and the correction is completed.
In addition, preferably, the direction code, the code text unit and the check code can be combined into a two-dimensional matrix lattice with any shape to adapt to the coating, carving and detection in a complex environment.
For example, if a two-dimensional matrix lattice based on BCD codes is used for hub tracing, if 7-bit digital code text is to be inscribed, and 9 bits of direction codes and check codes are added, the two-dimensional matrix lattice can be deformed into a 3 × 3 square matrix, a 2 × 5 or 5 × 2 rectangular matrix or a 1 × 9 or 9 × 1 bar matrix according to an actual inscribed area.
Specifically, as shown in fig. 8, fig. 8 is a modified layout of the BCD-based two-dimensional matrix lattice for hub tracing shown in fig. 7. Wherein, # represents a direction code, # represents a code text unit, and # represents a check code. From the 3 × 3 square matrix shown in fig. 7, a 1 × 9 bar matrix is transformed. Only the form is changed, and the direction code, the code text unit and the check code are not changed, namely the hub tracing information represented by the direction code, the code text unit and the check code are not changed.
Fig. 9 is another modified layout of the two-dimensional matrix lattice for hub traceability based on BCD encoding shown in fig. 7. Wherein, # represents direction code, ninthly represents code text unit, and r represents check code, 11 represents filling code text unit.
Therefore, the hub tracing can be deformed according to actual requirements and marking positions by using the two-dimensional matrix lattice based on the BCD codes, the requirements of code text coating and engraving under complex conditions are met, and the later identification of code text content is not influenced.
The tracing information of the hub is coded into a two-dimensional matrix lattice based on BCD coding, a pneumatic or electric needle type marking machine can be used for directly marking on the surface of the hub lightening pit in a physical mode, the main marking positions are in a flange lightening pit and a spoke lightening pit, and the hub lightening pit is simple in structure and high in identifiability; the method can be increased, decreased, adjusted and deformed according to actual requirements, and is suitable for the requirements of code text coating, engraving and detection under various complex conditions; the device has a check code and certain error prevention and correction capability.
The invention solves the problems that the identifiability of code text, the long time for coating and engraving the code text and the size and the form of the code text limited by the coating and engraving position of the hub tracing code under the complex condition.
The method embodiments of the present invention may be implemented in software, hardware, firmware, etc. Whether the present invention is implemented as software, hardware, or firmware, the instruction code may be stored in any type of computer-accessible memory (e.g., permanent or modifiable, volatile or non-volatile, solid or non-solid, fixed or removable media, etc.). Also, the Memory may be, for example, Programmable Array Logic (PAL), Random Access Memory (RAM), Programmable Read Only Memory (PROM), Read-Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), a magnetic disk, an optical disk, a Digital Versatile Disk (DVD), or the like.
The second embodiment of the invention relates to a two-dimensional matrix lattice based on BCD coding for hub tracing. Fig. 7 to 9 are schematic structural diagrams of the two-dimensional matrix lattice based on BCD coding for hub tracing.
Specifically, as shown in fig. 7 to 9, the two-dimensional matrix lattice for hub tracing based on BCD coding includes: the direction code, the check code and the plurality of code text units;
the direction code is positioned at the upper left corner of the two-dimensional matrix lattice and is used for representing the identification direction of the code text unit.
The check code is positioned at the last bit of the two-dimensional matrix lattice and is used for detecting the correctness of the code text unit or correcting the misread code text unit.
And the plurality of code text units are sequentially positioned at the rest positions of the two-dimensional matrix lattice and are used for representing hub tracing information.
The code text unit is a 2 x 2 lattice structure converted from BCD codes, the BCD codes are generated by BCD coding from numbers 0 to 9, and one BCD code is preset to uniquely correspond to one 2 x 2 lattice structure;
the direction code is a 2 x 2 lattice structure with 4 points;
the check code is a 2 x 2 lattice structure obtained by the operation of the direction code and all code text units.
The operation here may be a summation operation (sum check) or a parity judgment (parity check) or a cyclic redundancy operation (cyclic redundancy check). The check code is used for detecting the correctness of the code text or correcting part of the misread code text.
The two-dimensional matrix lattice based on the BCD codes for hub tracing is simple in structure and high in identifiability; the method can be increased, decreased, adjusted and deformed according to actual requirements, and is suitable for the requirements of code text coating, engraving and detection under various complex conditions; the device has a check code and certain error prevention and correction capability.
The first embodiment is a method embodiment corresponding to the present embodiment, and the present embodiment can be implemented in cooperation with the first embodiment. The related technical details mentioned in the first embodiment are still valid in this embodiment, and are not described herein again in order to reduce repetition. Accordingly, the related-art details mentioned in the present embodiment can also be applied to the first embodiment.
It is to be noted that in the claims and the description of the present patent, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the use of the verb "comprise a" to define an element does not exclude the presence of another, same element in a process, method, article, or apparatus that comprises the element.
While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (9)
1. A generation method of a two-dimensional matrix lattice based on BCD codes for hub tracing is characterized by comprising the following steps:
encoding the traceability information of the hub into a digital combination comprising a plurality of numbers;
BCD coding is carried out on a plurality of digits in the digit combination respectively, so that a plurality of BCD codes are generated;
respectively converting the BCD codes into code text units of a preset 2 x 2 lattice structure, wherein one BCD code uniquely corresponds to one 2 x 2 lattice structure;
taking a 2 x 2 lattice structure with 4 points as a direction code, and placing the direction code at the upper left corner of the two-dimensional matrix lattice;
calculating the direction code and all code text units to obtain a check code with a 2 x 2 lattice structure, and placing the check code at the last bit of the two-dimensional matrix lattice;
sequentially placing the code text units on the rest positions of the two-dimensional matrix lattice so as to form a complete two-dimensional matrix lattice; the direction code is obviously different from the code text unit and the check code and has uniqueness.
2. The method for generating the BCD code-based two-dimensional matrix lattice for hub tracing according to claim 1, wherein the operation is a summation operation.
3. The method for generating a two-dimensional matrix lattice based on BCD coding for hub tracing according to claim 1, wherein the operation is an odd-even judgment operation.
4. The method for generating a two-dimensional matrix lattice based on BCD codes for hub tracing according to claim 1, wherein the operation is a cyclic redundancy operation.
5. The method for generating a BCD code-based two-dimensional matrix lattice for hub tracing according to any one of claims 1 to 4, wherein the codebook cells can represent numbers 0 to 9.
6. The generation method of the BCD-coding-based two-dimensional matrix lattice for hub tracing according to claim 1, wherein any combination of two code text units or a combination of one code text unit and the check code cannot form a code text identical to an upper left-hand direction code.
7. The method for generating the BCD-code-based two-dimensional matrix lattice for hub tracing according to claim 6, wherein the direction code, the code text unit and the check code can be combined into a two-dimensional matrix lattice with any shape to adapt to painting and detection in a complex environment.
8. The utility model provides a hub is traceed back with two-dimensional matrix lattice based on BCD code which characterized in that includes: the direction code, the check code and the plurality of code text units;
the direction code is positioned at the upper left corner of the two-dimensional matrix lattice and used for representing the identification direction of the code text unit;
the check code is positioned at the last bit of the two-dimensional matrix lattice and is used for detecting the correctness of the code text unit or correcting the misread code text unit;
the code text units are sequentially located at the rest positions of the two-dimensional matrix lattice and are used for representing the tracing information of the hub;
the code text unit is a 2 x 2 lattice structure converted from BCD codes, the BCD codes are generated by BCD coding from numbers 0 to 9, and one BCD code is preset to uniquely correspond to one 2 x 2 lattice structure;
the direction code is a 2 x 2 lattice structure with 4 points;
the check code is a 2 x 2 lattice structure obtained by the operation of the direction code and all code text units;
the direction code is obviously different from the code text unit and the check code and has uniqueness.
9. The BCD-code-based two-dimensional matrix lattice for hub tracing according to claim 8, wherein said operation is any one of a summation operation, a parity judgment operation and a cyclic redundancy operation.
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| CN105760919B (en) * | 2016-02-06 | 2018-08-07 | 深圳市天朗时代科技有限公司 | A kind of coding of dot matrix Quick Response Code and recognition methods |
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