Design of Middleware Architecture for Active Sensor Tags

RFID sensor tag has been widely adopted in many domains, especially in the environment sensitive applications. RFID middleware plays an important role in processing RFID tag data. It collects the raw data from heterogeneous data sources and provides RFID related services for user applications. EPCglobal has defined a standard RFID middleware—Application Level Events (ALE) for filtering and collecting RFID data. However it does not support active sensor tag, as well as the manipulation of sensor data and tag configuration. In this paper, we propose an extended middleware architecture which is based on the standard ALE middleware. Our middleware can support both passive and active sensor tag, as well as provides extended functions for processing RFID events and sensing events.