The Research And Implementation Of RFID Middleware

RFID or radio frequency identification technology is a highly efficient data collection and identification technology. This technology is now widely used in logistics, transport information, health care, retail and other industries, could significantly enhance the management and operational efficiency and lower costs. With the formal release of RPID White Paper, China will celebrate the climax of RFID applications.RFID applications system is made up of several components, such as RFID tags, RFID readers, application software, etc.. Along with the continuously deepening of RFID applications, application system exists many problems, such as the problem of equipment incompatible, the problem of data preprocessing, which are discussed in this thesis, which prevent the RFID technology. RFID Middleware plays a very important role as the core technology, when RFID system will be deployed in reality. Its main task is to filter, aggregation, data release which is relevant to tags coming from readers. It establishes a strong message bridge between RFID equipments and application systems.At present, domestic and international research has been done on the RFID middleware, but which still is on the trial stage, rarely have mature products which are more or less restricted and have shortages, the thesis put forward RFID middleware system framework which is made up of the data collection layer, data process layer, information distribution layer.This thesis has also done a lot of researches and explorations on the design and the implementation of RFID middleware, and does a lot of work in some key technologies, such as middleware technology, virtual storage space technology. It also gives a preliminary design thought of the data collection of RFID middleware, which is based on the ethernet interface and the implement technology of data collection which uses the raw socket.After summarizing of the key technologies and implementation of the data collection layer, the thesis particularly introduces the implement technology of the data process layer, including the algorithms of data process, such as ordered searching algorithm, recursion merging sort algorithm and basic sequential algorithmic schema. And then, analyses both the advantages and the disadvantages, especially compares the time complexities, and then chooses the better one finally.