Radio Frequency Identification (Radio Frequency IdenTIficaTIon, RFID) technology is a non-contact automatic identification technology (hereinafter referred to as RFID) realized by radio frequency communication. RFID tags are small in size, large in capacity, long in life, and reusable. They support fast reading and writing, non-visual recognition, mobile recognition, multi-target recognition, positioning and long-term tracking management. RFID technology combined with technologies such as the Internet and communications enables global tracking and information sharing.
EPCglobal is a non-profit organization jointly established by the United States Uniform Code Association (UCC) and the International Article Numbering Association (EAN) in September 2003. Its predecessor was a non-profit established at the Massachusetts Institute of Technology on October 1, 1999. Sex Organization Auto-ID Center. EPCglobal's goal is to address the transparency of the supply chain. Transparency means that all partners in the supply chain can understand information about a single item, such as location, date of manufacture, and more. At present, EPCglobal has established branches in China, Canada, Japan and other countries, specializing in the allocation and management of EPC code segments in these countries, the formulation of EPC-related technical standards, the promotion and popularization of EPC-related technologies in the country, and the promotion and application.
EPCglobal is an RFID standardization organization headed by the United States and Europe and involved in many companies and organizations around the world. It is a coalition of standardization organizations, and it is very good in the speed, depth and breadth of RFID standards development, and has received worldwide attention. Visit the website http:// for the RFID standard setting process and related standards.
In order to achieve the above objectives, EPCglobal has developed a standard development process specification [1], which regulates the responsibilities of EPCglobal departments and the business processes for standard development. Conduct multi-party review of the submitted draft standard. The technical review includes anti-collision algorithm performance, application scenarios, tag chip footprint, reader complexity, dense reader network, and data security. The standard is very competitive. The following describes the EPCglobal architecture framework and the corresponding RFID technology standards.
I. EPCglobal RFID Standard System FrameworkIn the EPCglobal standards organization, the function of the architecture committee ARC is to develop a framework of RFID standards, and to coordinate the relationship between the various RFID standards so that they meet the requirements of the RFID standard system framework. The Architecture Committee is very important for the development of complex information technology standards. ARC first gave the EPCglobal RFID system framework [2], which is an abstract model of the typical RFID application system. It contains three main activities, as shown in Figure 1. The specific contents are as follows:
1. EPC physical object exchange: The user interacts with a physical object with an EPC code. For EPCglobal users, the physical object is the item and the user is a member of the item's supply chain. The EPCglobal RFID architecture framework defines the EPC physical object exchange standard to ensure that when a user submits a physical object to another user, the latter will be able to determine the physical object EPC encoding and easily obtain the corresponding item information.
2. EPC infrastructure: In order to realize the sharing of EPC data, each user performs EPC encoding for the newly generated object at the time of application, tracks the EPC code carried by the physical object, and records the collected information to the basis. In the EPC network within the facility. The EPCglobal RFID architecture framework defines the primary facility component interface standard for collecting and recording EPC data, thus allowing users to build their internal systems using interoperable components.
3. EPC data exchange: Users exchange data with each other to improve the visibility of items in the logistics supply chain. The EPCglobal RFID framework defines the EPC data exchange standard, providing users with a way to share EPC data end-to-end and providing users with access to EPCglobal core services and other related shared services.
Further, ARC condenses the RFID system framework model between multiple users (Figure 2) and the individual user internal RFID system framework model (Figure 3) from the RFID application system, which is a component of a typical RFID application system. An abstract model designed to express relationships between entity units. In the model diagram, the solid line box represents the physical unit, which can be a hardware device such as a tag or a reader, or an application software, a management software, a middleware, etc.; a dotted line box represents an interface unit, which is an information interaction between the entity units. Interface. The architecture framework model clearly expresses the interaction between entity units and entity units, and the entity units interact with each other through interfaces. "Interface" is the object of formulating a common standard. Because the interface is unified, as long as the physical unit meets the interface standard, interconnection and interoperability can be realized. This allows different manufacturers to implement "entities" according to their own technology and RFID application characteristics, which means that it provides considerable flexibility to adapt to the development of technology and the particularity of different applications. “Entity†is the object of developing application standards and common product standards. The relationship between "entity" and "interface" is similar to the relationship between component implementation and component interface in components. The interface is relatively stable, and the implementation of components can be determined by the enterprise itself according to technical characteristics and application requirements.
Sound Bar,Rgb Light Sound Bar,Gaming Sound Bar,Hifi Soundbar Speaker,Echo Wall
Comcn Electronics Limited , https://www.comencnspeaker.com