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A robust glass-breakage detector using the MSP430

Posted: 27 Aug 2008 ?? ?Print Version ?Bookmark and Share

Keywords:TI application note? robust glass-breakage detector? signal spectrum?

This application report describes the working and operation of a modified version of the hardware and software described in the application report A Simple Glass-Breakage Detector Using the MSP430 (SLAA351). This modified version is more robust, with comparable current consumption values to the simple glass-breakage detector.

Hardware and software changes are made to the previous design to improve accuracy when detecting a valid glass breakage. The robust glass-breakage detector includes an extra thud detection stage before actual glass-breakage detection. This avoids false triggering of the glass-breakage detector for sound events with signal spectrum similar to a glass-break sound. Hardware and software modifications made to the existing MSP430F2274 glass-breakage detector are shown in this application report.

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