System and method for RF tripwire based intrusion detection
US11475748B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2020 |
| Grant date | Oct 18, 2022 |
| Priority date | — |
| Expiry date | Dec 4, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B17/318
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Systems and methods for detecting a presence of a target such as a vehicle, an animal, a person, or another object in a monitored area without the use of sensors, are provided. Multiple RF field anomaly detection nodes may be spaced through the monitored area and connected, such as in a mesh network. The RF field anomaly detection nodes may include radio transceivers that communicate with one another and which monitor a signal strength of received signals. The nodes may compare the signal strengths to expected strength values. As a target enters a portion of the monitored area, the dielectric properties of the target cause at least one signal strength of at least one received signal to change. The RF field anomaly detection nodes may detect this change and trigger a further action or human readable alert corresponding to the presence of the target.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.