At present, the degree of informatization in the automotive industry varies greatly. Some are highly informatized. Some are just getting started and some still even use completely manual records. However, all enterprises hope to establish an identification system to help the management of the entire enterprise to a certain level. The efficiency of the entire logistics chain can be improved and the error rate can be reduced. Although most enterprises have established their own ERP system, each enterprise has its own information system, its information island is in a serious situation, and the degree of informatization is not the same. The informationization situation of our domestic enterprises lags behind in particular. However, each enterprise's investment in information technology is long-term, and the urgency of establishing an identification system is very strong.
Auto parts industry is an important part of the automotive industry is to ensure the long-term stable development of the automotive industry basis. After several years of development, auto parts market reached 200 billion yuan, maintenance market reached 60 billion yuan. Not only formed a certain economic scale, the quality of the car has also been greatly improved. Auto parts with the localization of the car led to the initial formation of more complete and mature parts and components supporting system.
Radio Frequency Identification (RFID), radio frequency identification technology is an automatic identification technology that began to emerge in the 1990s. Radio frequency identification technology is a technology that uses radio frequency signals to realize spatial coupling (alternating magnetic field or electromagnetic field) Technology that communicates with and communicates through information to identify purposes.
With the rapid development of global economic integration, the automobile industry is opening up more and more, and the domestic automobile manufacturing industry is under tremendous operating pressure. Some aspects of the automotive industry are highly informative, while others still follow a completely manual record-keeping approach. Although most enterprises have established their own information system, most of them have inconsistent information. At the same time, with the mass production and use of vehicles, the society will also have more and more requirements for the development of automobile industry. All enterprises hope to establish identification system to improve their management level in order to improve efficiency and reduce error rate. The automotive industry is bound to be a major area where RFID technology has a huge impact.
1 RFID system, the basic principles
RFID (Radio Frequency Identification) is a rapid identification technology developed rapidly in recent years. Compared with the traditional bar code technology, it has the advantages of large data capacity, no contact identification and long storage time , Stain resistant to harsh environments and other characteristics, are widely used in various industries.
Automotive manufacturers and component suppliers are under greater pressure than other industries to: on the one hand, they need to keep lowering their costs; on the other, they must ensure that their products meet the industry's strictest quality standards. In recent years, automakers have spent significant IT budgets on supply chain management systems to achieve a transparent and flexible supply chain. RFID technology in the material and product tracking on the role of the automotive supply chain will have a positive impact, through the deployment of RFID systems, supply chain process can be realized visual management and manufacturing process of distributed control.
Typical RFID automatic identification system consists of the following parts: data carrier, read / write unit and interface module, the interface module to the bus or serial communication with the PLC, PC and other control unit connected.
The basic principle of RFID is to realize the contactless transmission of object information through the coupling or propagation of space electromagnetic waves in order to achieve the purpose of automatically identifying the object to be identified and obtaining the related information of the object of identification [3]. When the system is started, the reader generates a radio signal of a specific frequency to excite a program in the tag's internal chip, thereby generating a radio frequency wave and transmitting the ID code in the memory back to the reader. After being decoded by the computer Complete identification function. A set of the most basic RFID system generally consists of two parts: electronic tags (Tag) and reader (Reader). Electronic tags and readers through the coupling element to achieve the spatial coupling of RF signals (alternating magnetic field or electromagnetic field), in the coupling channel, according to the timing relationship between the energy Transfer and data exchange. In order to accomplish the reading function of the radio frequency identification technology better, in the larger RFID system, the use of ancillary equipment such as middleware is also required to manage the multi-head identification system.
2 RFID in the automobile production line application
In the enterprise workshop site to establish a unified database, as an information platform for the circulation of goods in order to facilitate the overall standardization of management. In the industrial sector using RFID technology for each WIP given an identification number (ID), which is the name of the parts in the information network, through the RFID technology, the production status, inventory mapping to the information network, registered in On-site database, sent to the information system (such as ERP, MRP)
The RFID technology used in production line monitoring, automatic control and detection can be achieved, saving costs. RFID tag can uniquely identify every 1 product, through the application of raw materials and sources for each product record, production line location, production process and inventory status and other information, to provide an effective basis for enterprises to better manage production and adjust inventory.
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