Embedded RTOS for a Smart RFID Reader

摘要

Location information systems are widespread and the demand for them is growing due to the increasing spread of mobile devices. The information can be used by context-aware systems to provide the user with relevant data corresponding to current actions. In a museum chamber the user can receive detailed information of the surrounding exponents, or when changing the rooms during working hours the office phone can be redirected to the current location. A couple of different location aware infrastructures are available in order to collect position data. Mobile phone towers, GPS satellites, video cameras, badge proximity detectors are just a few of the possible solutions. Through the mentioned sensors, position or proximity information can be obtained. In this paper a system concept based on smart Radio-Frequency Identification (RFID) readers will be presented. Through the proposed system location properties will be provided to the context-aware system. Details of the embedded real time operating system of the smart reader will be provided in order to manage the complex protocol of communicating through RFID technology.