Glass break sensor

Details Glass break sensor Glass break sensor

1996-05-13

1999-06-29

Mullen, Jr., Thomas J.

Communications: electrical

Condition responsive indicating system

Specific condition

340566, G08B 1300

Patent

active

059174102

ABSTRACT:
The glass break detector uses sampling techniques to a low band and a high band portion of a signal from a transient event to assess whether the bands are random. In addition, an assessment of the envelope shape of the signal is made to confirm the signal is consistent with a rapid rise followed by a sloped decay typical of transient events. It has been found that dividing of the signal into high and low bands and analyzing each portion over a short front end portion of a transient event is effective in distinguishing glass break events from other common events.

REFERENCES:
patent: 4054867 (1977-10-01), Owens
patent: 4668941 (1987-05-01), Davenport et al.
patent: 4952931 (1990-08-01), Serageldin et al.
patent: 5117220 (1992-05-01), Marino et al.
patent: 5510765 (1996-04-01), Madau
patent: 5510767 (1996-04-01), Smith
patent: 5543783 (1996-08-01), Clark et al.
patent: 5608377 (1997-03-01), Zhevlev et al.
patent: 5675320 (1997-10-01), Cecic et al.

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