Ballistic Source Location Identification System

Abstract

This system enables a user to find and locate the source of a signal on a pad made with a material whose acoustic properties are known beforehand. For an impact like a touch can create P and S waves that radiate through the pad. The system consists of piezoelectric transducers strategically placed to capture signals such that the difference in identification or the relative shift in the detection can be used to determine the direction and location of the source within the pad. This concept can be implemented to detect the position of a finger on the pad without scanning the entire pad itself as seen in a regular conventional pad. The system is implemented on an FPGA architecture for the requirement of real time signal monitoring. Furthermore, the detected signal can give the exact location with high precision.