Radio Frequency Identification (rfid), The Key Technologies And The Application Of Reverse Logistics, Remanufacturing Electronic Waste

RFID (Radio Frequency Identification) is an automatic identification technology, with which data can be duplex transported contactlessly between reader and tag. Because of its many advantages such as contactless, long working distance, suitable for bad environment, efficient recognizing ability, RFID is rapidly spreading in industry, commerce, and traffic transport management fields etc. Chinese government and enterprises have started to research RFID technology, and some RFID projects have been put into practice. The national standard drawing of RFID ISO 18000 has begun in September 2005. RFID technology is also adopted in our second issue identification card. It is necessary to rapidly research RFID technology with own intelligent property and compatible with international standard, for our country will need billions of RFID in the near future.Based on above background, RFID technology, its development and application and research situation will be firstly introduced in this paper. Secondly the author will analyze and research deeply RFID's basic theory and working principle, including digital encoding, digital modulating, energy supplying for the tag from the reader, the data transmission between reader and tag, data integrity and security etc. Especially, the author studied thorough the collisions problem in transmitting data simultaneity within reader's scope. In this thesis, the innovation is development of Dynamic Binary-Tree algorithm on base of Binary-Tree Protocol. Combining with each tag exclusive EPC (Electronic Product Code), the inspecting collisions by bit, and this paper formed this algorithm principle, proved and validated it by simulation. Conclusions are that the algorithm's efficiency of utilization is higher. So it can resolve those collisions much better that multiple tags are transmitting data at the same time within reader's scope. It can promote RFID applications in more fields. Finally, based on the above knowledge, a Waste Electrical Apparatus Remanufacturing Reverse Logistic Management System based on the RFID technique are developed and discussed. The paper used Microsoft Visio and Access database as management tools and information systems technology to design the business operational flow charts, data flow diagrams, data dictionary and system flowchart. The paper designs the code management module about the real remanufacturing reverse logistic management case.