CN101540004B - Mechanical barcode nameplate - Google Patents
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- CN101540004B CN101540004B CN200910014091A CN200910014091A CN101540004B CN 101540004 B CN101540004 B CN 101540004B CN 200910014091 A CN200910014091 A CN 200910014091A CN 200910014091 A CN200910014091 A CN 200910014091A CN 101540004 B CN101540004 B CN 101540004B
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Abstract
The invention discloses a mechanical barcode nameplate which solves the problem of the informationization of a manufacture industry, has simple structure and convenient use and can be well applied to severe environments, such as a mechanical workout industry, the manufacture industry, and the like. The mechanical barcode nameplate comprises a nameplate body, both sides of the nameplate body are blank spaces, at least one binary data area of a one-dimensional or two-dimensional bar code is arranged among the blank spaces, the binary data areas are formed by concave or convex column bars and spaces among the column bars, and the number of the spaces among the column bars can be regulated.
Description
Technical Field
The invention relates to a bar code technology used in the field of machining and the field of automatic identification, in particular to a mechanical bar code nameplate.
Technical Field
The product nameplate is widely applied to the production of the square surface, is an indispensable important mark for most of electromechanical products, steel products and the like, and contains important information such as product performance, specification, delivery code, national standard, production date and the like. The realization of the whole process informatization logistics management from production, warehousing and sale of products to users is an inevitable requirement of informatization development, and the completion of the process not only requires that the products have identifiability (nameplate information making), but also needs to automatically identify the products (nameplate information automatic input). At present, the recording work of each link from the production, warehousing, ex-warehouse and market of electromechanical products in China is basically finished manually, and the workload is very large. Therefore, after the nameplate information is collected, the nameplate information is automatically input, and the method has important significance for informatization stream management.
The automatic identification technology is an integrated technology which is based on information technology and automation technology and takes data acquisition, identification, analysis and transmission as main contents, and is an important method and means for realizing information data identification and input. At present, the bar code technology is the most widely applied automatic identification technology, and more than 100 thousands of products adopting bar code identification in China are produced. Although bar code technology has been used in many fields, there are still disadvantages, such as easy scratching requiring outer layer processing protection, easy unevenness of printing plane, easy dust contamination, curling of base paper or printed label, and different specifications of scanner, which limit its wider application. Particularly in the manufacturing industry with strong informatization requirements, the application of the bar code technology is limited by the special conditions and application conditions of the industry, for example, the severe production manufacturing environment and the storage environment of the steel industry, and the traditional bar code technology is not suitable any more. The method is characterized in that the Optical Character Recognition (OCR) technology is utilized to directly recognize characters of a nameplate image, as the nameplate imprinted characters are directly imprinted and formed on the surface of the nameplate by a character mold, no chromatic aberration exists between a character region and a background region, the character region and the background region have different heights, and the characters are not imaged through chromatic aberration but are imaged through reflection of the character region and the background region to light rays in different ways. The problems of low recognition rate, accuracy and recognition speed are caused, and the direct application of the technology is limited.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, solve the problem of informatization of the manufacturing industry and provide the mechanical bar code nameplate which has the advantages of simple structure and convenience in use and can be well applied to severe environments such as machining and manufacturing industries and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
the mechanical bar code nameplate comprises a nameplate body, wherein blank areas are arranged on two sides of the nameplate body, at least one binary data area of a one-dimensional or two-dimensional bar code is arranged between the blank areas, the data area is composed of concave or convex vertical bars and spaces among the vertical bars, and the number of the spaces among the vertical bars is adjustable.
The mechanical bar codes in the one-dimensional data area are arranged in a line, and each mechanical bar code comprises a starting symbol vertical bar, a data character vertical bar, a check symbol vertical bar and an ending symbol vertical bar which are separated by a plurality of spaces and are sequentially arranged; wherein,
the initial character vertical bar is the first one-bit or several-bit character vertical bar in the mechanical bar code and is used for identifying the beginning of one mechanical bar code;
the data symbol vertical bar is positioned behind the initial symbol vertical bar and is an area for storing coding information by the mechanical bar code, and the number of bits of data in the data symbol area is arbitrarily defined according to actual requirements;
the check symbol vertical bar is positioned in a few bit character vertical bar behind the data symbol vertical bar area, and the correctness of data character identification is checked during identification;
the terminator bar is the last or several-digit character bar of the mechanical bar code and is used to identify the end of a mechanical bar code.
The two-dimensional data area comprises two or more rows of mechanical bar codes, and each row of mechanical bar codes comprises a starting symbol vertical bar, a data character vertical bar, a check symbol vertical bar and an ending symbol vertical bar which are separated by a plurality of spaces and arranged in sequence; wherein,
the initial character vertical bar is the first one-bit or several-bit character vertical bar in the mechanical bar code and is used for identifying the beginning of one mechanical bar code;
the data symbol vertical bar is positioned behind the initial symbol vertical bar and is an area for storing coding information by the mechanical bar code, and the number of bits of data in the data symbol area is arbitrarily defined according to actual requirements;
the check symbol vertical bar is positioned at a plurality of characters behind the data symbol vertical bar area, and the correctness of data character identification is checked during identification;
the terminator bar is the last or several-digit character bar of the mechanical bar code and is used to identify the end of a mechanical bar code.
The two-dimensional data area comprises a matrix type mechanical bar code consisting of a plurality of vertical bars and spaces among the vertical bars; wherein, the first row and the first column are the initial row and the initial column of the mechanical bar code;
starting from the second line to the second last line, each line is provided with a plurality of spaced starting symbol vertical bars, data character vertical bars, check symbol vertical bars and termination symbol vertical bars which are sequentially arranged, wherein the starting symbol vertical bars are first one or more character vertical bars in the mechanical bar codes and are used for identifying the start of one mechanical bar code; the data symbol vertical bar is positioned behind the initial symbol vertical bar and is an area for storing coding information by the mechanical bar code, and the number of bits of data in the data symbol area is arbitrarily defined according to actual requirements; the check symbol vertical bar is positioned at a plurality of characters behind the data symbol vertical bar area, and the correctness of data character identification is checked during identification; the terminator vertical bar is the last character vertical bar or a plurality of character vertical bars of the mechanical bar code and is used for identifying the end of one mechanical bar code;
and parity calculation is carried out on the binary characters of each column from the second row to the last column according to the second row to the second last row of the last row.
The space is the distance between the smallest vertical bars that can be imprinted or identified in a mechanical barcode.
And a character reading/inputting area for people is arranged below the data area, consists of at least one of concave or convex Arabic numerals or characters, and is a hexadecimal reading corresponding to the binary mechanical bar code.
The difference between the invention and the common label and the license plate is that: the application is different: the mechanical bar code nameplate is used for machine identification; and the license plate is directly used for people to read. The purposes are different: the mechanical bar code nameplate is used as a mark and provides high-reliability recognition rate; the license plate is just a logo. The direct relationship of characters is different: the mechanical bar code nameplate characters have a close relation derived by a strict mathematical algorithm; the relation between the characters of the license plate is loose. The character structures are different: the mechanical bar code nameplate has a bar code structure of a data symbol, a check symbol and the like; the license plate does not. The representative information is different: the two-dimensional mechanical bar code directly represents detailed information of the product; license plates represent only limited identification information. The generation of characters differs: the characters of the mechanical bar code nameplate are reflection difference characters formed by concave-convex characters; the license plate is a color difference character.
The invention has the beneficial effects that: the invention provides a brand-new nameplate manufacturing technology, namely a mechanical bar code nameplate, by analyzing the prior art and combining the practical application background according to the developed mature bar code technology. The technology of the invention can be widely applied to industries and enterprises with extremely bad environmental conditions, high reliability requirements and informatization requirements under the condition of increasing little cost. Compared with the existing bar code technology, the mechanical bar code nameplate is manufactured by manufacturing bar holes on the nameplate by a mechanical processing method. This method is currently unique. The coding and decoding of the mechanical bar code nameplate have strict and measurable recognition rate, error rate, rejection rate and the like by means of a coding technology. Different from the existing nameplate or label, the nameplate or label is a symbol processed on a carrier and is in a simple bar and empty form, and the one-dimensional mechanical bar code nameplate does not directly represent the information of a product.
The characteristics of the enterprise nameplate informatization technology are analyzed, the advantages of the bar code technology are absorbed, and the mechanical bar code nameplate manufacturing technology realized by adopting the machining technology is invented. The method for coding the products is adopted, each product is provided with an independent code, and the codes are identified by using an optical character identification technology, so that the products are identified and automatically input. The technology has the characteristics of simple mode, simple and convenient realization, visual reading, high reliability, anti-counterfeiting and the like. The method realizes quick and accurate identification without increasing cost basically, has high reliability, and the error rate can be less than one millionth. Compared with other automatic bar code identification technologies, the method has stronger adaptability and wider application field, and particularly has good popularization and use values in industries with severe storage environment, difficult checking and high reliability requirements.
While this invention has been shown and described in what is presently considered to be the most practical and preferred embodiment, it will be apparent to those skilled in the art that many modifications may be made within the scope of the invention, which scope is to be accorded the broadest interpretation of the appended claims so as to encompass all equivalent methods and products.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a binary data field of a one-dimensional bar code;
FIG. 3 is a binary data field of a two-dimensional bar code;
FIG. 4 is an empty schematic;
FIG. 5a is a schematic diagram of the structure of start and stop symbols with different numbers of vertical bar spaces;
FIG. 5b is a schematic diagram of the structure of start and stop symbols with different numbers of vertical bar spaces;
FIG. 5c is a schematic diagram of the structure of start and stop symbols with different numbers of vertical bar spaces;
FIG. 5d is a schematic diagram of the structure of the start and stop symbols with different numbers of vertical bar spaces.
Detailed Description
The invention is further described with reference to the following figures and examples.
1. Mechanical bar code structure
The device consists of blank areas on two sides, a start symbol vertical bar, a data character vertical bar, a check symbol vertical bar (self-check), an end symbol vertical bar and a character vertical bar for people to read. The basic structure of the mechanical bar code is shown in the following figures 1 and 2:
the blank area, also called the quiet area, is an area without any character vertical bar or mechanical bar code information, usually the background of the mechanical bar code carrier or the same as the empty characters in the mechanical bar code, located on both sides of the mechanical bar code. And prompting the identification instrument, namely prompting the mechanical bar code identification instrument to prepare for scanning the mechanical bar code symbol.
Start symbol bar: the first character bar or bars in a mechanical bar code are used by special character bars or bar space mechanisms to identify the beginning of a mechanical bar code. The recognition instrument first confirms the existence of the vertical bar of the character, and then continues to recognize the subsequent information.
Data symbol vertical bar: the mechanical bar code is positioned behind the vertical bar of the start symbol, and an area for storing coding information is arranged on the mechanical bar code, so that the digit of data in the data symbol area can be arbitrarily defined according to actual requirements.
Checking the symbol vertical bar: the several-bit character vertical bars located in the data character area and the terminator area are determined by performing a certain arithmetic operation on the data character vertical bars, and the correctness of the identification of the data character vertical bars is checked during the identification.
Terminator vertical bar: the last character bar or bars of the mechanical bar code, which are formed by special character bars or bar spaces, are used to identify the end of a mechanical bar code. The recognition instrument recognizes and confirms the existence of the character so as to confirm that the mechanical bar code scanning is finished and avoid incomplete information input.
The data symbol vertical bar, the check symbol vertical bar and the terminator vertical bar jointly form a data area of the mechanical bar code.
For a person to read/input characters: the mechanical bar code is positioned in the lower area of the mechanical bar code and can be identified by a manual input method when the mechanical bar code cannot be identified. This item is not what the mechanical barcode must appear in, and may not appear in the mechanical barcode.
Certain blank areas are also arranged above and below the mechanical bar code printing area, in order to ensure the mechanical positioning of stamping and the like to be distinguished from identification,
2. symbol structure of mechanical bar code
The symbolic composition of the mechanical bar code can be designed into two or more symbols according to actual conditions. The mechanical bar code symbol is a concave-convex symbol vertical bar which is imprinted on a nameplate by a mechanical processing method, and is different from a printing symbol of a common bar code. The definition of the symbol must be based on the recognition of the recognition device, for example, the vertical bar or the Arabic numeral 1 symbol is adopted, and the characteristics of simple manufacture, high printing speed, high recognition accuracy and the like are provided.
3. Coding of mechanical bar codes
Any bar code is composed of bars and spaces according to the preset coding rule and related standard. The code sequence composed of numbers, letters, and alphanumerics, which is prepared for the management object, is called a code. The mechanical bar code is an information code which is arranged according to a certain coding rule in a combined mode.
The coding method of the mechanical bar code refers to the logic setting of the bar, the empty coding rule and the binary mark in the mechanical bar code. The encoding method of the one-dimensional mechanical bar code mainly comprises two methods: a module assembly coding method and a width adjustment coding method. The module assembly coding method refers to that in the bar code symbol, the bar and the space are formed by combining modules with standard width. The information of the mechanical bar code is realized by different bar and empty module combination modes. The width regulation coding method is a method for forming a bar code by arranging different bar empty modules with different widths.
The length and the coding method of the mechanical bar code can be changed according to actual needs.
3.1 mechanical Bar code embossed symbol area size
In fig. 4, the so-called null is the mechanical barcode minimum distance: the distance between the smallest symbols that can be imprinted or identified in a mechanical barcode is called the minimum distance or minimum resolution distance for short. Mechanical barcode safety distance: the minimum distance of the mechanical bar code is defined as 2 times of the minimum distance of the mechanical bar code, and is called the safety distance for short. Mutual independence between the areas is ensured, and errors caused by mechanical positioning errors and identification algorithm requirements are prevented. The width of the area where the single data character of the mechanical barcode is printed is defined as 4 times the minimum distance and 2 times the safe distance. The mechanical barcode start/stop print area is defined as 8 times the minimum distance, 4 times the safe distance.
3.2 mechanical Bar code Start/stop coding rules
The mechanical bar code start/stop coding rules define the bar-space combination of start and stop and the choice of symbol. For example
The start character is defined as 2 times of the length of a single data character area (defined as 8 times of the minimum resolution distance or 4 times of the safety distance), three bar characters are stamped in the area, the positions of the two bar characters before and after the area are fixed as the left and right limit positions of the area, and the middle character position can be selected from four stamping positions: z is a, b is 1, 4; 2: 3; 3: 2; 4: 1. Where a is the distance from the middle character to the extreme left character, represented in fig. 5a as the distance from the middle black bar to the left black bar, and b is the distance from the middle character to the extreme right character, represented in the figure as the distance from the middle black bar to the right black bar.
Fig. 5 a-5 d are schematic diagrams of different stamping distance ratios of the start/stop of the mechanical barcode, wherein fig. 5a shows the encoding rule Z of the start/stop of the mechanical barcode is 0.25; fig. 5b shows the mechanical bar code start/stop coding rule Z as 0.67; fig. 5c shows the mechanical bar code start/stop coding rule Z as 1.5; fig. 5d shows the mechanical bar code start/stop coding rule Z as 4.
The selection of the start/stop symbols of the mechanical bar code can be combined in equal scale combinations and in different scale combinations, so that up to 10 sets of start/stop symbols can be selected. For example: the start symbol with Z equal to 1.5 and the end symbol with Z equal to 1.5 may be selected, or the start symbol with Z equal to 0.5 and the end symbol with Z equal to 1.5 may be selected
3.3 mechanical Bar code data symbol encoding rules
The mechanical bar code data symbol code can select the digit according to the actual requirement. But is influenced by practical conditions, such as minimum resolution distance, length of the stamping carrier, accuracy of identification and the like. The coding rules can be compiled according to a sequential increasing method and a maximum code distance method. The sequential increasing method is to compile according to the Arabic numerals sequence from big to small, and the maximum code distance method is to compile to ensure the maximum code distance between two adjacent mechanical bar codes.
3.4 mechanical Bar code check symbol encoding rules
Redundant bits are introduced to identify the data bit representation value in order to ensure the correctness of the bar code identification. The width and shape of the check bit region are selected to be the same as those of the data bit, so as to ensure the stamping speed and the positioning accuracy.
The check symbol number selection reaches 99.99 percent according to the identification requirement, CRC-4 is selected preliminarily, and the production polynomial is as follows: x is the number of4+ x +1, see standard ITU g.704 standard.
The check symbols are encoded in polynomial form, and a binary bit string can be represented by a univariate polynomial with coefficients of 0 and 1. There is a K-bit mechanical bar code data bit, corresponding to the polynomial m (x), and its check symbol is calculated by: a generator polynomial G (x) of r times predetermined is used as a divisor, a polynomial corresponding to a new bit string formed by adding r 0 bits to the tail of the information bit string is used as a dividend, the dividend and the new bit string are subjected to modulo-2 division, the finally obtained r-bit remainder is a check symbol, and the r-bit check symbol is added to the tail of the original information bit string to form a mechanical code of k ten r bits.
During verification, directly removing the k-bit data bit information by using the same generator polynomial G (x), if the k-bit data bit information is completely removed, indicating that the mechanical bar code is correctly identified, and removing tail r bits from a received k + r bit binary sequence to obtain the required k-bit data bit information; if the error is not completely eliminated, the identification error is determined to be required to be corrected.
3.5 mechanical Bar code for people to read/input character encoding rules
The mechanical bar code is used for people to read/input characters, so that the characters are manually input when the characters cannot be identified due to factors such as damage of the mechanical bar code, and normal reading of the mechanical bar code is guaranteed to the greatest extent. The coding rule is related to the mechanical bar code, and a hexadecimal and binary corresponding mode can be selected according to different digits of the mechanical bar code. For example: the mechanical barcode is 1011110010010011, and the characters that are read by a human can be represented as BC 93.
Application example:
suppose the information bits or data symbols of the mechanical barcode are: 1011001, the generator polynomial is: g (x) x4+x3+1, then the corresponding check symbol for this data symbol is: 1010.
the characters for people to read/input are: B34. as shown in fig. 2.
4. Two-dimensional mechanical bar code nameplate
The two-dimensional mechanical bar code nameplate is divided into a layer-arranged type two-dimensional bar code nameplate and a matrix type two-dimensional mechanical bar code nameplate according to a mechanical bar code realization principle. The layer-row type two-dimensional mechanical bar code is based on a one-dimensional mechanical bar code, and information is expressed by stacking two or more lines of the one-dimensional mechanical bar code with the layer-row height shortened according to needs. The one-dimensional mechanical bar code has the characteristics of a one-dimensional mechanical bar code in aspects of coding design, a checking principle, a reading mode and the like, and is a multilayer symbol.
Matrix type two-dimensional mechanical bar code is a mechanical bar code which is built on the basis of computer image processing technology, combined coding principle and the like, adopts a coding mode of row-column correlation, can contain identification characters with different composition rules from other units.
The matrix type two-dimensional mechanical bar code coding method comprises the following steps: the first row and the first column are a starting row and a starting column of the two-dimensional mechanical barcode, and the starting row and the starting column are selected to be distinguished by different adjustable distances. The second column from the second row to the second column through to the last column of the last row is the data symbol area. Except the last line, each line of the data symbol area generates a mechanical bar code according to the encoding rule of the one-dimensional mechanical bar code. And (4) performing parity check calculation according to the coding rule from the second column to the last column of the last row according to each column of binary characters in the data character area. For example, in fig. 3, the first row and the first column are the starting row and the starting column of the two-dimensional mechanical barcode, and the starting row and the starting column select the equal-pitch encoding method. The second mechanical barcode generated is 10110011010; a third row 01010011001; a fourth row 10110101101; fifth element 11100011000. Then the second character of the sixth row is determined as binary 0 obtained by parity checking the binary 1 of the second row, the binary 0 of the third row, the binary 1 of the fourth row and the binary 1 of the fifth row, and the corresponding column of the last row is obtained in the same way.
The implementation mode is as follows:
manufacture of mechanical bar code nameplate
The mechanical bar code is the only bar code technology realized by adopting a machining technology at present, can be directly machined and manufactured at a place needing identification by hand, and can also be manufactured by adopting a machining method. The numerical control nameplate printer (model: YP or YQ series) is recommended to be adopted, and has the advantages of simple and reliable structure, high automation degree, high printing speed and friendly control interface; the printing position of the characters on the nameplate is controlled and determined, the positioning is accurate, the characters are arranged orderly, and the subsequent recognition is facilitated.
And the mechanical bar code generated by the mechanical bar code coding system is related to the nameplate content and is recorded in a corresponding database. And manufacturing the generated mechanical bar code at a proper position of the nameplate or on the back of the nameplate by adopting a machining method. For example, a numerical control nameplate printer (model: YP or YQ series) can be used for directly stamping the content of the nameplate, and simultaneously stamping the group of mechanical bar codes at the corresponding positions. And finishing the manufacture of the mechanical bar code nameplate.
Generally speaking, characters printed by a numerical control nameplate printer have the problems of positioning errors, random errors, inconsistent distances among the characters and the like. The anti-counterfeiting function of the mechanical bar code can be achieved by combining with a mechanical bar code reading network technology, and the benefits of enterprises and users are effectively protected.
Compared with the existing bar code technology, the mechanical bar code nameplate is manufactured by manufacturing bar holes on the nameplate by a mechanical processing method. This method is currently unique. The coding and decoding of the mechanical bar code nameplate have strict and measurable recognition rate, error rate, rejection rate and the like by means of a coding technology. Different from the existing nameplate or label, the symbol is processed on the carrier, is in a simple strip and empty form, and does not directly represent the information of the product.
The characteristics of the enterprise nameplate informatization technology are analyzed, the advantages of the bar code technology are absorbed, and the mechanical bar code nameplate manufacturing technology realized by adopting the machining technology is invented. The method for coding the products is adopted, each product is provided with an independent code, and the codes are identified by using an optical character identification technology, so that the products are identified and automatically input. The technology has the characteristics of simple mode, simple and convenient realization, visual reading, high reliability, anti-counterfeiting and the like. The method realizes quick and accurate identification without increasing cost basically, has high reliability, and the error rate can be less than one millionth. Compared with other automatic bar code identification technologies, the method has stronger adaptability and wider application field, and particularly has good popularization and use values in industries with severe storage environment, difficult checking and high reliability requirements.
While this invention has been shown and described in what is presently considered to be the most practical and preferred embodiment, it will be apparent to those skilled in the art that many modifications may be made within the scope of the invention, which scope is to be accorded the broadest interpretation of the appended claims so as to encompass all equivalent methods and products.
Claims (2)
1. A mechanical bar code nameplate is characterized by comprising a nameplate body, wherein blank areas are arranged on two sides of the nameplate body, at least one binary data area of a two-dimensional bar code is arranged between the blank areas, the binary data area consists of concave or convex vertical bars and spaces among the vertical bars, and the number of the spaces among the vertical bars is adjustable; the space is the distance between the smallest vertical bars which can be stamped or identified in the mechanical bar code; a character reading/inputting area is arranged below the binary data area, consists of at least one of concave or convex Arabic numerals or characters, and is a hexadecimal reading corresponding to the binary mechanical bar code; the binary data area of the two-dimensional bar code comprises two or more rows of mechanical bar codes, and each row of mechanical bar codes comprises a start symbol vertical bar, a data character vertical bar, a check symbol vertical bar and an end symbol vertical bar which are separated by a plurality of spaces and arranged in sequence; wherein,
the initial character vertical bar is the first one-bit or several-bit character vertical bar in the mechanical bar code and is used for identifying the beginning of one mechanical bar code;
the vertical bar of the data character is positioned behind the vertical bar of the initial symbol, and is an area for storing coding information by the mechanical bar code, and the digit of the data character in the vertical bar area of the data symbol is arbitrarily defined according to actual requirements;
the check symbol vertical bar is positioned at the rear few characters outside the data symbol vertical bar area, and the correctness of data character recognition is checked during recognition;
the terminator bar is the last or several-digit character bar of the mechanical bar code and is used to identify the end of a mechanical bar code.
2. A mechanical bar code nameplate is characterized by comprising a nameplate body, wherein blank areas are arranged on two sides of the nameplate body, at least one binary data area of a two-dimensional bar code is arranged between the blank areas, the binary data area consists of concave or convex vertical bars and spaces among the vertical bars, and the number of the spaces among the vertical bars is adjustable; the space is the distance between the smallest vertical bars which can be stamped or identified in the mechanical bar code; a character reading/inputting area is arranged below the binary data area, consists of at least one of concave or convex Arabic numerals or characters, and is a hexadecimal reading corresponding to the binary mechanical bar code; the binary data area of the two-dimensional bar code comprises a matrix type mechanical bar code consisting of a plurality of vertical bars and spaces among the vertical bars; wherein,
the first row and the first column are the initial row and the initial column of the mechanical bar code;
starting from the second line to the second last line, each line is provided with a plurality of spaced starting symbol vertical bars, data character vertical bars, check symbol vertical bars and termination symbol vertical bars which are sequentially arranged, wherein the starting symbol vertical bars are first one or more character vertical bars in the mechanical bar codes and are used for identifying the start of one mechanical bar code; the vertical bar of the data character is positioned behind the vertical bar of the initial symbol, and is an area for storing coding information by the mechanical bar code, and the digit of the data character in the vertical bar area of the data symbol is arbitrarily defined according to actual requirements; the check symbol vertical bar is positioned at the rear few characters outside the data symbol vertical bar area, and the correctness of data character recognition is checked during recognition; the terminator vertical bar is the last character vertical bar or a plurality of character vertical bars of the mechanical bar code and is used for identifying the end of one mechanical bar code;
and (4) performing parity check calculation on the binary characters of each column in the vertical bar area of the data character according to the encoding rule from the second column of the last row to the last column.
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| CN103310173A (en) * | 2013-05-30 | 2013-09-18 | 广州中国科学院沈阳自动化研究所分所 | Die recognition device and die recognition method based on contact-type mechanical two-dimensional code |
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| CN102270323A (en) * | 2011-06-09 | 2011-12-07 | 湖南中烟工业有限责任公司 | Multi-security cigarette digital anti-counterfeiting method |
| CN102888665A (en) * | 2012-09-28 | 2013-01-23 | 东华大学 | Spinneret plate with identification codes |
| CN107220690A (en) * | 2017-06-06 | 2017-09-29 | 北京华大九天软件有限公司 | A kind of method that bar code is quickly generated in domain |
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| CN1716307A (en) * | 2004-06-30 | 2006-01-04 | 水城钢铁（集团）有限责任公司 | Bar code information managing system for iron and steel products and bar code tag |
| CN201084186Y (en) * | 2007-08-10 | 2008-07-09 | 王颖 | A bar code automobile number plate |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1716307A (en) * | 2004-06-30 | 2006-01-04 | 水城钢铁（集团）有限责任公司 | Bar code information managing system for iron and steel products and bar code tag |
| CN201084186Y (en) * | 2007-08-10 | 2008-07-09 | 王颖 | A bar code automobile number plate |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103310173A (en) * | 2013-05-30 | 2013-09-18 | 广州中国科学院沈阳自动化研究所分所 | Die recognition device and die recognition method based on contact-type mechanical two-dimensional code |
| CN103310173B (en) * | 2013-05-30 | 2016-08-24 | 广州中国科学院沈阳自动化研究所分所 | A kind of mold identification device based on contact mechanical two-dimensional code and recognition methods |
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| CN101540004A (en) | 2009-09-23 |
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