Sensors 2001, 1(4), 121-137; doi:10.3390/s10400121

A Siren Detection System based on Mechanical Resonant Filters

 and * email
Received: 5 September 2001; in revised form: 20 September 2001 / Accepted: 20 September 2001 / Published: 22 September 2001
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: A system based on mechanical resonant filters is proposed that can be used for the detection of acoustical signals the frequency components of which vary according to specific periodic patterns. Usually, signals of this category produced by the siren of an emergency vehicle. The device essentially implements a mechanical narrow filter bank that covers the frequency range of a typical siren sound. Signal detection is obtained by measuring the time delay between successive activation of the filters of the bank. The whole analysis reveals how a set of simple, low-cost mechanical resonant filters can replace an electronic analog or digital system for the implementation of a filter bank. Moreover, a scaling down procedure is proposed so that a microsystem may be developed.
Keywords: Siren detector; Mechanical filters; Resonant filters; Acoustic filters
PDF Full-text Download PDF Full-Text [265 KB, uploaded 20 June 2014 23:29 CEST]

Export to BibTeX |

MDPI and ACS Style

Fragoulis, D.K.; Avaritsiotis, J.N. A Siren Detection System based on Mechanical Resonant Filters. Sensors 2001, 1, 121-137.

AMA Style

Fragoulis DK, Avaritsiotis JN. A Siren Detection System based on Mechanical Resonant Filters. Sensors. 2001; 1(4):121-137.

Chicago/Turabian Style

Fragoulis, Dimitris K.; Avaritsiotis, John N. 2001. "A Siren Detection System based on Mechanical Resonant Filters." Sensors 1, no. 4: 121-137.

Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert