How Bss Can Be Used on Eddy Current Sensor Based on Induction Balance Principle

B lind Source Separation is now intensively studied and applied in many domains [1] [2] [3] [4]. It provides an excellent response, under some conditions, to problems of multiple perturbations. The application we have developed consists in creating an eddy current sensor able to identify buried metallic tags characteristic of different pipe contents. The main problem we met is the great influence of the external environment during the signal acquisitions, especially when metallic objects are buried near the tags or when the tags are too close from each other. As there is no signal processing methods able to completely remove these negative effects [5], we have chosen to apply BSS techniques in order to solve this particular problem. In this paper, we test the possibility of BSS applications to our sensor according to the theoretical requirements they need. From this analysis, we study the feasibility of such a new system in an industrial context. In the first part of this article, we check if the different conditions that require BSS are fulfilled and how they are. We also show how we have to modify the sensor working to obtain the wanted result. After this work, we present the capacity and the performances of the developed device to solve very awkward real cases met in test sessions. Finally, we conclude by the great improvements (robustness, reliability) that can bring the BSS technique implantation on the eddy current we have developed.