Determining enclosure breach ultrasonically
US8406082B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 19, 2007 |
| Grant date | Mar 26, 2013 |
| Priority date | — |
| Expiry date | Jul 14, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B29/188
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A structure intrusion may be determined. For example, a signal may be received corresponding to a wave propagating in the structure. Next, the received signal may be analyzed. Based on the analysis in a “passive mode”, a breach may be determined to have occurred in the structure when the received signal indicates that at least one aspect of the received signal crosses a predetermined threshold. Furthermore, based on the analysis in an “active mode”, a breach may be determined to have occurred in the structure when comparing the received signal to a baseline waveform indicates that at least one aspect of the received signal varies from the baseline waveform by a predetermined amount. The wave propagating in the structure may comprise an elastic wave and may be in an acoustic frequency range or in an ultrasonic frequency range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.