TWICE SQUARING METHOD - NONLINEAR ACOUSTIC-SIGNAL PROCESSING TECHNIQUE FOR REAL-TIME DETECTION OF SODIUM BOILING

Authors
HAYASHI K SHINOHARA Y WATANABE K NABESHIMA K
Citation
K. Hayashi et al., TWICE SQUARING METHOD - NONLINEAR ACOUSTIC-SIGNAL PROCESSING TECHNIQUE FOR REAL-TIME DETECTION OF SODIUM BOILING, Annals of nuclear energy, 23(10), 1996, pp. 863-875
Citations number
11
Categorie Soggetti
Nuclear Sciences & Tecnology
Journal title
Annals of nuclear energy → ACNP
ISSN journal
03064549
Volume
23
Issue
10
Year of publication
1996
Pages
863 - 875
Database
ISI
SICI code
0306-4549(1996)23:10<863:TSM-NA>2.0.ZU;2-T
Abstract
A new signal processing method, named the Twice-Squaring method, for a coustic detection of sodium boiling in liquid metal fast breeder react or has been developed. It uses a relatively simple nonlinear signal pr ocessing technique in time domain, consisting of band-pass filtering a nd squaring of signal in two folds. Its advantage is that real-time de tection can be realized using only simple analog circuits without any digital calculation. In the present paper, we describe details of this method and the results of evaluation tests performed for sodium boili ng acoustic data from KNS-1 test rig and from BOR-60.