| 摘要 |
<p>A glass-breakage detector that provides improved immunity to false triggering when detecting the breakage of a glass window, or similar structure, as sensed by an acoustic transducer. The detector employs a validation method which improves discrimination of commonly known false alarm signals, such as glass flexing. Signals from an acoustic transducer are amplified, conditioned, and measured within three signal processing sections which process the signals at low-frequencies, medium-frequencies, and high-frequencies according to methods highly selective to breakage events. The detector provides an alarm output upon validating a detected breakage event.</p> |
