Developing an identification system for museums using ultrasound technology

Abstract

This work presents the design of a low cost electronic system that uses PSK modulated ultrasound signals to perform location and identification in indoor environments. The target application is the identification of works of art in museums. In this paper we describe the design, implementation and testing of the system prototype. This system (composed by three emitters and one receiver) can correctly identify each emitter at distances from 20cm up to 500cm with a BER (Bit Error Rate) below 7%. In the presence of three emitters separated 200cm from each other the system can correctly identify the emitter at distances from 20cm up to 400cm. The system’s probability of false detection is below 10-6.