Coding for Agricultural Product Trace
Zhenhua Wu · Zhongguo nongye Kexue · 2011
【Objective】An agricultural product trace coding was designed,which can ensure the public to get the enterprise information by the trace coding without professional database.【Method】As each area position code is associated with only one character,the enterprise information is consisted of area position code.Encryption algorithm was applied according to the increasing of code length.【Result】 The trace coding is composed of product code,producing area code,production date code and attestation type code while the producing area code is composed of administrative division code and enterprise name.Producing area code and production date code is converted by decimal-quaternary conversion and dividing section.The validation code is generated by permutation and combination of the identifiers in producing area code and production date code,and attestation type code.The trace coding with thirty-four bits is converted to that with twenty bits.【Conclusion】The design of this twenty trace coding has the characteristics of short code extent and strong encryption.The key information about production enterprise and agricultural products can be traced to locate the production enterprise quickly and accurately without the database and can take emergency measures when the question concerning quality safety of agricultural products happened.