Rail breakage detection device and rail breakage result management system
US11919550B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2018 |
| Grant date | Mar 5, 2024 |
| Priority date | — |
| Expiry date | Jun 13, 2040 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01B35/06
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A rail breakage detection device includes a first core part provided to a first cable connecting an electrical neutral point of an impedance bond that electrically connects a first rail and a second rail to the first rail, a second core part provided to a second cable connecting the electrical neutral point of the impedance bond to the second rail, a first coil wound around the first core part to generate a first electromotive force in accordance with a current variation occurring in the first cable, a second coil connected electrically to the first coil and wound around the second core part to generate a second electromotive force in accordance with a current variation occurring in the second cable, and a CPU to determine that the first or second rail is broken based on an electromotive force that is a sum of the first and second electromotive forces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.