Sensor arrangement, apparatus for position determination, rail vehicle and method for position determination for a rail vehicle
AssigneeSiemens Mobility GmbH
InventorLars Johannes
Life of this patent
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Abstract
A sensor arrangement for position determination of a rail vehicle includes at least two sensors that can be attached to the rail vehicle. Each of the sensors is configured to ascertain a position speed and to be disposed on the rail vehicle at different positions transverse to the direction of travel. At least one processing apparatus which is connected to the sensors is configured to process the position speeds ascertained by the sensors. An apparatus for position determination of a rail vehicle, a rail vehicle, and a method for position determination for a rail vehicle are also provided.
Claims8
An apparatus for position determination of a rail vehicle, the apparatus comprising:
- at least one satellite navigation apparatus configured to provide GNSS data;
- at least two sensors for ascertaining an angular velocity ω and a position speed of the rail vehicle, said at least two sensors configured to be attached to the rail vehicle at mutually different positions transverse to a direction of travel of the rail vehicle, at least one of said at least two sensors being:
- an optical sensor, or
- an inductive sensor, or
- configured as dual radar;
- at least one processing apparatus configured to process the position speeds ascertained by said at least two sensors and to ascertain the angular velocity ω of the rail vehicle by using a formula
- ω
- =
- v
- 1
- -
- v
- 2
- Δ
-
- r
- ,
- where v1 and v2 are position speeds ascertained by using said at least two sensors and Δr is a separation of said at least two sensors from each other;
- and
- at least one checking apparatus configured to check the GNSS data provided by said at least one satellite navigation apparatus or a position ascertained from the GNSS data provided by said at least one satellite navigation apparatus;
- said at least one checking apparatus configured to compare an angular velocity ascertained by using the GNSS data with the angular velocity ascertained by said at least two sensors and to trigger an action when a difference between the angular velocities exceeds a predetermined limit value.
Dependencies are inferred from the claim text.