Intrinsically safe DSL circuit
US8351176B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 2008 |
| Grant date | Jan 8, 2013 |
| Priority date | — |
| Expiry date | Sep 12, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/25428
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An electrical installation comprising control and/or monitoring means connected to a field device by means of an electrical communications circuit, in which the communications circuit comprises a power supply, a communications device, the field device as a load thereof, and Intrinsic Safety means, in which the communications device is adapted to send and receive signals over the communications circuit to and from the field device, in which the field device is adapted to send and receive signals over the communications circuit to and from the communications device, in which the Intrinsic Safety means renders all or part of the communications circuit Intrinsically Safe, in which the field device is located in an Intrinsically Safe part of the communications circuit, characterized in which the communications circuit is adapted to carry DSL signals, and in which the communications device and the field device communicate with one another according to the DSL protocol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.