US 12,111,333 B2
Sensor arrangement, apparatus for position determination, rail vehicle and method for position determination for a rail vehicle
Lars Johannes, Braunschweig (DE)
Assigned to Siemens Mobility GmbH, Munich (DE)
Filed by Siemens Mobility GmbH, Munich (DE)
Filed on Apr. 20, 2022, as Appl. No. 17/724,687.
Claims priority of application No. 10 2021 203 898 (DE), filed on Apr. 20, 2021.
Prior Publication US 2022/0334142 A1, Oct. 20, 2022
Int. Cl. G01P 3/36 (2006.01); B60W 40/105 (2012.01); B61L 15/00 (2006.01); B61L 25/02 (2006.01); G01S 17/58 (2006.01); G01S 19/21 (2010.01)
CPC G01P 3/36 (2013.01) [B60W 40/105 (2013.01); B61L 15/0063 (2013.01); B61L 15/0081 (2013.01); B61L 25/021 (2013.01); B61L 25/025 (2013.01); B61L 25/026 (2013.01); G01S 17/58 (2013.01); G01S 19/215 (2013.01); B60Y 2400/303 (2013.01); B61L 2205/04 (2013.01)] 8 Claims
OG exemplary drawing
 
1. 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

OG Complex Work Unit Math
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.