Projeto e implementação de PNRD e PNRD estendida a distância

Abstract

RFID (Radio Frequency Identification) technology is being used increasingly on industrial and logistics aplications, however, just as a manner of enabling item identification. In this work, a model based on Petri Nets, proposed by [2] is implemented, that, besides the identification of the product, it allows to update the item state in relation to the expected process in real-time. The Petri Net in question was named PNRD (Petri Net Inside RFID Database) and defines that RFID tags are used as a database containing the item identification, the expected process that said item will go through (stored on the Incident Matrix from the PNRD) and the current state of the item, besides that, in the middleware, are the information about how the process advances in function of pre-conditions determined from reads from the tags (antenna, distance, state of tag) needed to trigger the Petri Net’s transition. This work presents the implemented middleware to extract information from tags and store the trigger information from transitions. As well an example of implementation that shows a unidirectional control of a vehicle using PNRD.