Approches logicielles de sûreté de fonctionnement pour les systèmes RFID

Abstract : We are witnessing today a growing use of RFID (Radio Frequency IDentification) systems in various application areas (logistics,production systems, product traceability, etc.). Some of these applications are critical such as food-related cold chain logistics orbaggage handling systems in airports. Nevertheless, RFID are very sensitive to their environment, including electromagneticdisturbances or presence of obstacles, making them error-prone. Also, because of the large number of elements (tags, readers,and sensors) constituting current RFID systems, erroneous behaviors are more frequent. Hence, it is important to address all theproblems related to RFID system dependability and deal with them in order to make these systems more robust.The goal of this thesis is the development of software test and online diagnosis facilities for RFID systems to improve theirrobustness. In recent years, the effective use of RFID systems has seen the development of RFID middleware solutions, whoserole is to provide services for the management of large amounts of raw data of the various RFID sources. Due to the distributednature of current RFID systems, the use of such solutions is of great interest regarding the improvement of RFID systemdependability. In particular, thanks to the integration of dependability mechanisms, specifically the online test and diagnosisapproaches in the RFID middleware solution. In addition, because of the middleware is considered as the backbone of an RFIDsystem, whereby the whole RFID dataflow passes; all the needed information will be availabe to our proposed approaches toperform a correct diagnosis. We proposed several solutions to cover the two main layers of RFID systems; namely, themiddleware layer and the communication layer between the middleware and the data sources, the Low Level Reader Protocol(LLRP). We have proposed a LLRP compliant middleware solution, used to accommodate a probabilistic diagnosis algorithm todetect potential failures of the RFID system components on the basis of a probabilistic model that takes into account theexecution conditions. Then, we proposed a complementary mechanism to the previous algorithm for analyzing the log files ofthe LLRP communication interface allowing further analysis by looking for the causes of the detected failures on the basis of an already defined set of failure signatures. Finally, we proposed an extension of the LLRP standard to make it more reliable bytaking into account several RFID failures.
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Rafik Kheddam. Approches logicielles de sûreté de fonctionnement pour les systèmes RFID. Autre [cs.OH]. Université de Grenoble, 2014. Français. ⟨NNT : 2014GRENM011⟩. ⟨tel-01548411⟩



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