Design Of Agricultural Product Trace Coding Based On PDF417Two-dimensional Bar Code

Food safety is directly related to the life, health and stability of thecountry, food safety incidents continue to occur, a direct impact on our national foodindustry reputation in the market force and international competitiveness. How toensure food safety has become one of the focus of attention in China and the global,and safety of agricultural products is the most basic aspects of food safety, the safetyof agricultural products related to agricultural planting and breeding, harvesting,transportation, processing, storage, sale and consumption to control security incidentsdo not occur in the whole process, we should start from the source of agriculturalproducts and a full range of hazard analysis and the establishment of the entire supplychain in all aspects of information. Once security problems can be traced back to thebasis of the information problem occurred at a time, place and analyze the possiblecauses of problems.Bar code technology first appeared in the1920s, in the1970s about thepractical application and begin to develop, it is a so far both economical and practicalautomatic identification technology, has been widely used in various industries.Modern information technology is highly developed, a limited amount ofone-dimensional bar code can no longer meet the ever-changing needs. There is anurgent need to bar code in the limited space that more detailed information, in order tomake up for the lack of a one-dimensional bar code, two-dimensional bar code wasborn, two-dimensional bar code information represented in the horizontal and verticaldirections, not only in small The area can express a lot of information, but also toexpress the character and image information, the most important thing is the bar codefrom the database became an independent information carrier.With the increasingly serious food safety issues and people to improve thequality and safety of agricultural products traceability system for food safety havebecome increasingly demanding, and build all kinds of agricultural products traceability system is imperative. And increasing the amount of informationconsumers need, often before the one-dimensional code is limited, the amount ofinformation can no longer meet the needs of agricultural products traceability systeminformation needed to carry the two-dimensional code, so you can more detailed addall kinds of information in the traceability system of agricultural products. This paperpresents a new agricultural products traceability code encoding, which consists of fiveparts of origin code, product processing enterprises code, product code, productiondate code, authentication type code. Case in order to establish a database to know thedetails of the place of origin, the area below the administrative divisions of the codeof origin code with Chinese characters; product processing enterprises of code using acombination of the code of administrative divisions and corporate name; This designfully meet the consumer the needs of those in the study of two-dimensional bar codeencoding based on the theory, the most widely used two-dimensional bar codePDF417barcode, barcode generator using VB language. Provide effective technicalsupport for the realization of agricultural products traceability coding of agriculturalproducts to effectively identify effective tracking provides detailed information fortraceability of agricultural products. Lay the foundation based on the PDF417two-dimensional bar code agricultural products can be traced back to theestablishment of the system will achieve full traceability of the supply chain ofagricultural products.