Intrusion detection process and device
US6337625B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2000 |
| Grant date | Jan 8, 2002 |
| Priority date | — |
| Expiry date | Mar 17, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S15/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to an intrusion detection process for detecting an intrusion within a space, in which at least two acoustic or electromagnetic signals are emitted at different frequencies (f1, f2, . . . fn) inside said space; at a point inside said space, a signal is received that is the combination of the signals emitted and reflected in said space; the characteristics of the demodulated signals of different frequencies are compared to establish the presence or absence of an intrusion; an intrusion signal is generated when the presence of an intruder is confirmed. The invention also proposes an intrusion detection device implementing the process according to the invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.