EPC coding and blockchain

Publish: 2021-04-18 23:34:29

EPC coding principle: uniqueness, simplicity, scalability, confidentiality and security

EPC coding concerns: manufacturers and procts, embedded information, classification, batch proct coding, carrier

EPC coding structure:

EPC coding data structure standard specifies the characteristics and format of EPC data structure, as well as the conversion mode between GTIN, SSCC, Gln, grai, Giai, GSRN, NPC and EPC coding in the existing ean.ucc system. EPC coding data structure standard is applicable to information processing and information exchange of procts (goods, trade items, assets, location, etc.) and services in all links of global and domestic logistics supply chain

< H2 > extended data

EPC, as a unified coding identifier (URI), has the following encoding specification:

urn: EPC: ID: scheme: component1.component2

where scheme is the name of EPC compatible coding scheme, and component1, component2... Are the specific coding components under this coding scheme

for example, urn:epc :id: sgtin:0614141.112345.400 The EPC code represents the URI of the global trade proct code sgtin 061414112345400, where component1 represents the GS1 company prefix of sgtin, and the value is 0614141; Component2 represents the item reference, and the value is 112345; Component3 represents the serial number and the value is 400

EPC code consists of header, manufacturer identification code, object classification code, serial number and other data fields

header to identify the length, type, structure and version number of EPC; Manufacturer identification code, identifying the company or business entity; Object classification code, similar to SKU; Serial number, a special case of tagged object class

EPC coding types are divided into epc-64 type and epc-96 type

EPC coding principle: uniqueness, simplicity, scalability, confidentiality and security

extended materials

in order to realize single item identification, in 1999, the auto ID center of Massachusetts Institute of technology developed EPC, which aims to provide a unique number EPC code for each single item, and construct an Internet of things to realize real-time sharing of global item information by using RFID technology

The foundation of

EPC coding is ean.ucc, and it is expanded on ean.ucc. According to ean.ucc system, EPC coding system is divided into five types: sgtin, sgln, SSCC, GRA and Giai

The URI format of

EPC can be well used in information system, but it is not convenient to use such a long encoding in tag. Therefore, EPC coding also includes the binary coding format suitable for label form, and the conversion method between URI format and binary format

EPC code can provide unique identification for all entities, identify different fields through different fields, scan RFID tags pasted on the surface of the object, then you can know the information and flow direction of the object, and identify the object in the computer network, so as to realize the information transmission and object tracking

The construction of

EPC coding system can be used for reference to the coding integration of each unit and province, and the unification of physical space and information space coding

3. EPC coding system is a new generation of coding standard compatible with GTIN. It is the extension and expansion of the global identity system, an important part of the global identity system, and the core and key of EPC system.

4. Factory head, manufacturer identification code, object classification code and serial number

5. EPC code is managed by the standards committee, which will assign you some codes in the front and your own pipeline code in the back

6. What kind of coding< There are too many compression coding, text coding, speech coding and data coding.
compression:
lossless compression coding types
Huffman coding
arithmetic coding
run length coding
Lempel ZEV coding
(2) lossy compression coding types
prediction coding: DPCM, motion compensation frequency domain method: text transform coding (such as DCT), Subband coding
spatial domain method: statistical block coding
model method: fractal coding, model-based coding
based on importance: filtering, sub sampling, bit allocation, vector quantization
information compression method, also known as lossy compression, distortion coding or entropy compression coding

How to implement EPC? We can prepare for this technology from now on. Fundamentally speaking, the implementation of EPC needs to take three steps: 1
2. Join EPCglobal and make full use of the valuable opportunities provided by EPC network to cooperate with trading partners
3. Start to share your implementation plan with your trading partners so that they can plan and modify accordingly
companies interested in joining EPCglobal can contact ean member organizations (MO) in their countries. The only representative of EPCglobal in the people's Republic of China is EPCglobal China, which is responsible for the registration, management and standardization of EPCglobal EPC in China, the promotion of EPC system, the provision of technical support and the training of EPC system users. Enterprises can join as end users or senior members, and can participate in all behavior groups
what enterprises need to apply? EPCglobal will assign EPC manufacturer identification code to the member enterprises who join EPCglobal as end users once they apply
If an enterprise wants to assign EPC codes to objects that need to be shared with external trading partners, it needs EPC manufacturer identification codes assigned by EPCglobal. The software and hardware of EPCglobal network must comply with EPCglobal standard data protocol
What are the solution providers? How to cooperate with it? By becoming a member of EPCglobal, the company can access a service network of solution providers, manufacturers, consultants and EPC network. EPCglobal compliance and certification process is based on global market driven standards. EPCglobal will provide test suite and management software (conformance, interoperability and performance of tagged indivials) and hardware (performance of tagged containers / pallets) testing to help members select vendors and make other implementation decisions. Yes, I will. EPCglobal members have the right to convert the original ean · UCC manufacturer identification code into EPC manufacturer identification code

8. The relationship between the Internet of things and EPC. When it comes to the Internet of things, it must be connected with the two concepts of EPC and RFID. Let's make a simple comparison. Let's start with EPC. EPC is electronic proct code in English, which is easily misunderstood in Chinese. In December 2003, China's first PEC joint meeting confirmed that EPC should be translated into "proct electronic code". Its feature is to emphasize a general coding scheme which is suitable for coding every article. This coding scheme only involves the identification of the article, and does not involve any characteristics of the article. The EPC code of every item in the Internet of things is equivalent to an index. EPC coding theory and how to implement EPC will be the key content of this book. Let's talk about the Internet of things. The understanding of the Internet of things is in the process of deepening. Our initial understanding is to move everything to the Internet of things. Through the concept of EPC, it is equivalent to establishing a life to death file for every proct on the Internet of things. What are the characteristics of the Internet of things? It is a platform based on the Internet, which can query the information of every item in the world. The index of the Internet of things is the EPC code. There are several components of the Internet of things, one is the function of coding and identification, the other is the function of middleware and management, the other is the function of ons for addressing, and the other is the function of EPCIS and storage. Finally, RFID. Whether the concept of EPC can be put into practice or not depends on the RFID system at the bottom. Its basic components include electronic tags and readers. In theory, the EPC code can be implemented in the way of RFID or not. It is a code, and the way of RFID is chosen as a carrier. EPC tag is a kind of electronic tag, or radio frequency tag. Conceptually, EPC is equivalent to the core of the Internet of things. EPC code exchanges electronic data through the Internet of things, and EPC code uses RFID tags as the carrier, along with the circulation of physical objects in the real society. Through the Internet of things, great social and economic benefits will be generated. Everything is on the Internet of things, and each item has a unique EPC code. In this way, its archives can be found through the Internet of things, and the problems of anti-counterfeiting and a series of problems have been solved.

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