Inductive loop detector with automatic frequency change
US7324014B2 · kind B2 · utility
1Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2003 |
| Grant date | Jan 29, 2008 |
| Priority date | — |
| Expiry date | Dec 8, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B5/75
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system and method is disclosed to the elimination of cross talk between inductive loop detector units in a security system. The system includes appropriate devices for assigning different operational frequencies of each loop detector circuit to avoid cross talk. In a further aspect it provides a system and method for determining actual operational frequencies of various loop detector circuits in a security system and for changing the resonant frequencies to eliminate cross talk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.