Method for monitoring the position of a parked rail vehicle, and computer program, in particular for a train safety system

Patent metadata

Field	Value
Publication number	US-2023127674-A1
Application number	US-202117916192-A
Country	US
Kind code	A1
Filing date	Mar 1, 2021
Priority date	Mar 31, 2020
Publication date	Apr 27, 2023
Grant date	—

Abstract

The position of a rail vehicle that is parked on a track is monitored in a cold movement detection. A vehicle-side device of an automatic train safety system is deactivated when the vehicle is parked. Prior to the deactivation, a first positional value is determined by the automatic train safety system, and independently, a second positional value is determined by another localization system. With the vehicle-side device deactivated, the actual position of the vehicle is monitored by the other localization system. The additional positional values and/or a deviation of the actual position from a target position is transmitted to a track-side device of the train safety system. When the vehicle-side device is activated, the track-side device transmits the actual position of the vehicle to the vehicle-side device. If the vehicle has not moved, the automatic train guidance system can immediately assume the monitoring process starting from the first position

First claim

1 - 15 . (canceled)

16 . A method for monitoring a position of a vehicle parked on a track, the method which comprises:
providing the vehicle with a vehicle-side device of an automatic train safety system, and deactivating the vehicle-side device when the vehicle is parked; prior to deactivating the vehicle-side device, determining a first positional value from the position of the vehicle by the automatic train safety system and, independently thereof, determining a second positional value by a further localization system; assigning the second positional value to the vehicle; in a deactivated state of the vehicle-side device, monitoring an actual position of the vehicle by the further localization system and determining further positional values, thereby using the second positional value as a target position of the vehicle; transmitting at least one of the further positional values or a deviation of the actual position from the target position to a trackside device of the train safety system; and following an activation of the vehicle-side device, transmitting the positional value representing the actual position of the vehicle from the trackside device to the vehicle-side device.

17 . The method according to claim 16 , which comprises specifying a tolerance range for the deviation of the actual position from the target position, and ruling out a movement of the vehicle by the train safety system as an evaluation result while the actual position lies within the tolerance range.

18 . The method according to claim 16 , wherein the target position is a parking position for the vehicle.

19 . The method according to claim 17 , wherein the tolerance range allows a deviation from the target position by less than 100 cm.

20 . The method according to claim 19 , wherein the tolerance range allows a deviation from the target position by less than 50 cm.

21 . The method according to claim 17 , wherein the tolerance range allows a deviation from the target position by less than 20 cm.

22 . The method according to claim 16 , wherein the train safety system refuses control for a departure of the vehicle when a comparison of the actual position with the target position reveals that the vehicle has moved during the deactivated state of the vehicle-side device.

23 . The method according to claim 22 , which comprises releasing the vehicle by the train safety system for a manual supervision run, and taking over a control of the vehicle as soon as a localization has been completed by the train safety system.

24 . The method according to claim 23 , wherein the train safety system is configured to take over control only when a manual release has been completed first, wherein the train safety system waits for a release signal signifying the manual release.

25 . The method according to claim 16 , which comprises taking over control for a departure of the vehicle by the train safety system in a secure mode when a result of a comparison of the actual position with the target position reveals that the vehicle has moved during the deactivated state of the vehicle-side device, wherein the control is based on the actual position being the positional value.

26 . The method according to claim 25 , which comprises accepting a current positional value by the train safety system as soon as the current positional value has been determined by a passing of a trackside locating device of the train safety system, and subsequently terminating the secure mode by the train safety system.

27 . The method according to claim 16 , which comprises, following an activation of the vehicle-side device, displaying the actual position of the vehicle or the deviation of the actual position from the target position of the vehicle on a display device in the vehicle.

28 . The method according to claim 16 , which comprises, following an activation of the vehicle-side device, displaying the actual position of the vehicle or a proposal for a calculated position of the vehicle, and providing an input device to enable entering a confirmation verifying that the actual position or the proposal of the calculated position coincides with a true position of the vehicle.

29 . The method according to claim 16 , wherein the further localization system is a system selected from the group consisting of a satellite-based navigation system and a local tracking system installed at the location where the vehicle is powered down.

30 . A computer program product, comprising program commands in non-transitory form for performing the method according to claim 16 .

31 . A non-transitory computer program carrier containing a computer program with computer code for performing the method according to claim 16 .

32 . An automatic train control system, comprising:
a computer program product with computer code for performing the method according to claim 16 ; said computer code being stored in a trackside device of the automatic train control system; or both in the trackside device of the automatic train control system and in a vehicle-side device mounted in a train vehicle.

Assignees

• Siemens Mobility GmbH

Inventors

• Hammerl Malte
• Kohlruss Jacob Johannes

Classifications

• B61L25/025 Primary

  Absolute localisation, e.g. providing geodetic coordinates · CPC title

• B61L27/70

  Details of trackside communication · CPC title

• B61L2201/00

  Control methods · CPC title

• B61L25/021 Primary

  Measuring and recording of train speed · CPC title

• B61L27/04

  Automatic systems, e.g. controlled by train; Change-over to manual control · CPC title