Method and apparatus for automatically testing a railroad interlocking
US7363187B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2005 |
| Grant date | Apr 22, 2008 |
| Priority date | — |
| Expiry date | Aug 26, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61L27/60
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A railroad signal system interlocking is automatically tested. A control point interface corresponding to a predetermined function of the interlocking has an isolated section and a control section. The isolated section is connected with the interlocking and has a normal, inactivated state during operation of the interlocking, and an activated state for testing the interlocking by detecting an electrical characteristic representing the status of the predetermined function executed by the interlocking. The control section drives the isolated section to its activated state and receiving an output from the isolated section in response to the detected electrical characteristic, and delivers a status report.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.