Systems and methods for acquiring and characterizing time varying signals of interest
US10401513B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 2017 |
| Grant date | Sep 3, 2019 |
| Priority date | — |
| Expiry date | Jun 10, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2200/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods or systems for identifying seismic or acoustic signals of interest originating with moving motorized vehicles or footstep movement or stationary or moving machinery. A related system for monitoring an area includes a plurality of sensing devices each comprising a frame and a piezo-electric sensor element. A monitoring device is coupled to receive information from each of the sensing devices. One method includes providing a processing chain coupled to receive signal data from a sensor device which receives the signals, including a detection stage, a Joint Time Frequency (JTF) domain stage, and a classification stage. The detection stage identifies presence of signals that emerge from the background. The JTF domain stage estimates the state of the signals of interest over time. The classification stage assesses the previously derived information to form a decision about source identity. In one embodiment, the detector stage performs detections on a single cycle basis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.