Safe threshold-detection device for a railway system
US8316290B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2009 |
| Grant date | Nov 20, 2012 |
| Priority date | — |
| Expiry date | Jul 6, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B9/03
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A device for the safe threshold-detection of state information from an analog signal including a decision component and at least two acquisition diversity channels including in series a safe adaptation circuit, an electronic analog-to-digital conversion circuit, and a unit for comparing the digital output signal of the analog-to-digital conversion circuit with a reference signal is provided.The device comprises a fault detection circuit for the mutual comparison of digital output signals from the conversion circuits and supplies a consistency result.The output of the decision component is a function of the consistency result supplied by the fault detection unit and of the comparison results from the comparison units associated with the respective acquisition channels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.