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Rfid/epc identification technology and its application in container identification and tracking

the traditional identification technology and method represented by bar code has many limitations: information identification is static; Information recognition is contact; Information capacity is limited; Cannot give each storage and transportation unit a unique identity; Data storage and calculation are centralized. Although the two-dimensional bar code solves the problem of information identification capacity, it can only be applied to the circulation field (information management of business flow and logistics), and cannot track and run through the supply chain process transparently. The dynamic update and identification of information in all links are transparent in the whole process, which requires new identification technology

I. overview of RFID technology

the so-called RFID, radiofrequencyidentification, radio frequency identification technology, is an automatic identification technology that uses radio waves to read and write recording media. The distance of RFID is from a few centimeters to tens of meters. According to the way of reading and writing, thousands of bytes of information can be input. At the same time, it also has high confidentiality and unforgeability. According to the role of labels, they can be divided into marking labels and tracking labels

typical RFID application systems include RFID identification system, applicationinterface and applicationsoftwaresystem

typical RFID identification system includes tag, reader and antenna. These parts work together to complete the identification of RFID tagged items. Sometimes, in order to save cost and reduce volume, the reader and antenna are also integrated together. For RFID manufacturers, what they need to provide is RFID hardware system and API. According to the API provided by RFID manufacturers, system integrators can develop application software with different functions according to customers' different functional needs

the active RFID system requires batteries to supply power, which is large in size, limited in life, and very expensive, which greatly limits the application range of the RFID system, but the identification distance of the active RFID system is far, up to 30 meters. The passive RFID system does not need battery power supply, so the label is very small, and it can also be personalized packaged according to the requirements of users. The theoretical life of the passive RFID label is infinite and the price is low, but the identification distance is shorter than that of the active system. Therefore, we can predict that with the development of UHF RFID technology, passive RFID will be more widely used

compared with other automatic identification technologies, RFID identification system has the characteristics of no contact and market recognition, which gives Huang Rongxun confidence. It has high automation, durability and reliability, fast identification speed, can adapt to various working environments, and can realize high-speed and multi label simultaneous identification. It has a wider range of applications than other identification technologies, such as supply chain management, access control and security system, logistics system, cargo tracking system, electronic payment Production line automation, goods monitoring, vehicle monitoring, etc. It can be said that RFID will be the most widely used automatic identification technology. RFID technology has also been widely used in supply chain management

II. Introduction to the latest EPC technology and its relationship with RFID

with the economic globalization and the acceleration of the process of information networking, in the context of the rapid development of technological innovation, in order to meet the identification and efficient identification of individual products, the concept of electronic product code (EPC) is proposed, and EPC application standards, technologies and products are developed

led by the international Article Numbering Association and the United States unified code Committee, the GTIN coding system in the global unified identification system has been perfectly combined with the EPC concept, and EPC has been incorporated into the global unified identification system. EPC system is a complex, comprehensive and integrated system, including RFID, EPC coding, network, communication protocol, etc. RFID is only a part of it. EPC is one of the application fields of RFID technology. Only specific low-cost RFID tags are suitable for EPC system

organizationally: EPCglobal is promoted and implemented in countries around the world through coding organizations of ean and UCC

technically, the EPC structure is compatible with GTIN (Global trade project code) in the current C system, and EPC will become an important part of the general specification of C system

epc system (IOT) is based on computer interconnection and RFID technology, and uses the coding technology of the global unified identification system to give each entity object a unique code, and constructs an "internetofthings" to realize the real-time sharing of global item information. It will become a new technology that changes the retail settlement, logistics distribution and product tracking management mode after bar code technology (3) the greening of plastic additives

epc system is composed of EPC code, EPC tag, reader, EPC middleware (savant), object name resolution service (ons, objectnamingservice) and physicalmarkuplanguage (PML). EPC code + RFID + Internet constitute internetofthings. EPC is the development and innovation of bar code and RFID - EPC has become a part of the global unified identification system (C system)

epc is the continuation and expansion of C system, which is reflected in the following two aspects:

Third, the application of rfid/epc technology in container management

in the supply chain application of rfid/epc, the main application mode is the tracking application of logistics. The technical implementation mode is to stick rfid/epc tags on pallets, packing cases or containers for automatic storage and transmission of specifications, serial numbers and other information. Rfid/epc tags can transmit information to the reading head within a considerable distance, so that the warehouse and the site no longer need to use a handheld barcode reader to scan the barcode of components and in-process products one by one, which reduces the occurrence of omissions to a certain extent and greatly improves the work efficiency. Rfid/epc advocates believe that this move may significantly reduce costs and clear obstacles in the supply chain. This technology is closely linked with the logistics supply chain and is expected to replace bar code scanning technology in the next few years

the key of modern supply chain management is the automatic identification of products, containers, vehicles and personnel in the supply chain. All information is transmitted and reacted in real time in the enterprise MIS system or ERP system

UHF rfid/epc technology has the characteristics of long recognition distance, high recognition speed and low system cost. Therefore, it has become the most ideal means to track containers and pallets

for the transportation of bulk goods, the most ideal mode of transportation is, of course, container transportation with lifting height instigated by the ruler. Container transportation has the characteristics of good transportation privacy, undamaged packaging, low transportation cost, strong environmental adaptability, high loading density, standard stacking, etc. Generally, containers are provided by special container transportation companies to enterprises that need transportation. After the goods are transported, they are unloaded and then recycled by the container company

in the process of container transportation and use, the most critical link is the tracking management of containers, and how to prevent the loss, theft and damage of containers, and improve the turnover rate of containers. Because there are few competitive manufacturers, so as to improve the use efficiency of resources

in order to achieve the above purposes, container operating companies need to track their containers throughout the supply chain in order to reduce loss, theft and damage, so as to maximize the use of their resources and improve the efficiency of enterprises

the application of rfid/epc identification system in container management is to paste or embed labels on containers or pallets, and accompany containers or pallets through the whole life cycle of containers

read the label through the suspended reading head at the entrance, or the reading head installed on the forklift, or the handheld, and the real-time information is displayed on the display or directly entered into the database. The container rfid/epc identification system can identify 40 pallets and 80 plastic containers at the same time

rfid/epc technology can be used to identify and track all links of the whole process of container terminal and station management and cargo management, including logic, function access control and vehicle management, customs supervision and customs clearance, storage yard, ship positioning operation, inland transportation tracking, receiving confirmation, etc

information source: logistics industry

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