Produktspårning med RFID
Konceptutveckling och utvärdering
The aim of this thesis was to investigate the possibility of integrating an item tracking systemwith a monitoring system currently under development at Fifth Generation Technologies (P) Ltd.A literature study of RFID technology and the networks ZigBee and MiWi was done. Based onthe literature study a concept for a distributed system was developed.The concept is to have several RFID readers placed in the area where tracking is to be performedand allow them to communicate with each other through wireless communication. The RFIDreaders shall be able to form zones and filter the data that is forwarded from the zones to theservers and thus perform some of the work that the server would normally have to do. Theconcept has been evaluated by prototype development and testing. The prototype uses an ultrahigh frequency RFID reader and a MiWi network.The test indicated some limitations with the selected technologies. The angle between the RFIDtag and RFID readers, the density of RFID tags and the presence of certain materials was someof the things identified to affect performance. It was also shown that the network had reliabilityproblems in terms of online time.Proposals are given on how most of the problems can be avoided. With overlapping coverage,structuring of product flows and the need to analyze and tailor each implementation the systembecomes costly to implement and a deeper analyze of the gain must be done. Once installed thesystem could prove to be a very useful resource for both accounting and the daily work.