System and method to determine low-speed and stationary state of a rail vehicle
US11774573B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 9, 2020 |
| Grant date | Oct 3, 2023 |
| Priority date | — |
| Expiry date | Jul 12, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61L23/041
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for determining a stationary state of a rail vehicle on a track includes a first radar mounted at an end of the rail vehicle and a second radar mounted at another end of the rail vehicle. A speed sensor is mounted on the rail vehicle. A series of fixed reflective track features are found along the track. A processing unit, communicably connected with the speed sensor, the first radar and the second radar receives data from the first radar and the second radar corresponding to the distance to the fixed reflective track features and determines the stationary state or low-speed condition of the rail vehicle and checks the state or condition by comparing it with an output of the speed sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.