Design of analog-to-digital converter interface for hydrophone applications

Author

Sarwoprasojo, T. ; Gondokaryono, Yudi Satria

Author_Institution

Electr. Eng., Inst. Teknol. Bandung, Bandung, Indonesia

fYear

2011

fDate

17-19 July 2011

Firstpage

1

Lastpage

6

Abstract

Ship noise signature recognition needs a high dynamic range analog interface. We designed such interface connecting piezoelectric hydrophone to a PC. The design covers from signal conditioning preamplifier, ADC interfacing, to the acquisition software displaying a real-time frequency spectrum graph. DC-servo circuit was used in the preamplifier to address DC-offset issue inherent to piezoelectric hydrophones. A modified PCI sound card was used to transfer data from ADC to PC. The sound card CODEC was replaced by ADC being used. Tests were conducted in lab with a small-scale model.

Keywords

acoustic noise; analogue-digital conversion; computerised instrumentation; hydrophones; piezoelectric transducers; preamplifiers; signal conditioning circuits; sonar target recognition; ADC interfacing; DC-servo circuit; acquisition software; analog-to-digital converter interface; design; high dynamic range analog interface; hydrophone applications; interface connecting piezoelectric hydrophone; real-time frequency spectrum graph; ship noise signature recognition; signal conditioning preamplifier; sound card CODEC; Integrated circuit modeling; Noise; Piezoelectric transducers; Preamplifiers; Propellers; Sonar equipment; ADC; DC-servo; hydrophone; ship noise signature; sound card;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Engineering and Informatics (ICEEI), 2011 International Conference on

Conference_Location

Bandung

ISSN

2155-6822

Print_ISBN

978-1-4577-0753-7

Type

conf

DOI

10.1109/ICEEI.2011.6021651

Filename

6021651