A train positioning method includes acquiring first device identification information at an antenna; acquiring train positioning information; after determining the first device identification information is trustworthy, storing the first device identification information and the positioning information in a non-volatile memory; after awakening the train from dormancy mode, receiving second device identification information using the antenna; according to the received second device identification information and the first device identification information from the memory, determining whether, after being awakened, the train is at the same position as before entering dormancy mode; upon determining that, after awakening, the train is at the same position as before entering dormancy mode, determining the current position and direction of the train match positioning information in the memory, and completing positioning of the train. This ensures the usage experience of users of a train. An apparatus, a system, and a computer-readable medium are also provided.

A train positioning method includes acquiring first device identification information at an antenna; acquiring train positioning information; after determining the first device identification information is trustworthy, storing the first device identification information and the positioning information in a non-volatile memory; after awakening the train from dormancy mode, receiving second device identification information using the antenna; according to the received second device identification information and the first device identification information from the memory, determining whether, after being awakened, the train is at the same position as before entering dormancy mode; upon determining that, after awakening, the train is at the same position as before entering dormancy mode, determining the current position and direction of the train match positioning information in the memory, and completing positioning of the train. This ensures the usage experience of users of a train. An apparatus, a system, and a computer-readable medium are also provided.

Examples of techniques for vital train tracking using an ultra-wideband ranging system are disclosed. The system includes a train disposed on a track, the train having at least two onboard UWB beacons configured to broadcast a unique beacon identification number. The system also includes a plurality of wayside UWB beacons disposed along the track, a subset of the plurality of wayside UWB beacons being connected to a wayside communications network, wherein at least two of the plurality of wayside UWB beacons are configured to receive the unique beacon identification number. The system also includes a central computer in communication with the wayside communications network, wherein the central computer is configured to determine a position of the train on the track based at least in part upon known location of the at least two wayside UWB beacons.

Examples of techniques for vital train tracking using an ultra-wideband ranging system are disclosed. The system includes a train disposed on a track, the train having at least two onboard UWB beacons configured to broadcast a unique beacon identification number. The system also includes a plurality of wayside UWB beacons disposed along the track, a subset of the plurality of wayside UWB beacons being connected to a wayside communications network, wherein at least two of the plurality of wayside UWB beacons are configured to receive the unique beacon identification number. The system also includes a central computer in communication with the wayside communications network, wherein the central computer is configured to determine a position of the train on the track based at least in part upon known location of the at least two wayside UWB beacons.

This monitoring device comprises: an acceleration acquisition unit for acquiring acceleration data of a vehicle traveling along a track; an acceleration effective value acquisition unit for acquiring a plurality of acceleration effective values obtained by applying a bandpass filter for each of a plurality of constant specific bandwidths to the acceleration data; a corrected acceleration calculation unit for calculating a corrected acceleration on the basis of each of the acceleration effective values of the respective constant specific bandwidths and predetermined correction coefficients corresponding to the respective constant specific bandwidths; and an abnormality detection unit for detecting an abnormality of the vehicle or of the track on the basis of the magnitude of the corrected acceleration.

External sensor data is efficiently recorded without changing a resolution or a sampling rate. In a data recording device, an acquired data property storing unit stores, as a data property, an external environment in which external sensor data is to be recorded, an external sensor data property recognizing unit recognizes, as a data property, the external environment corresponding to the external sensor data, a data recording necessity determining unit determines, based on the data property recognized by the external sensor data property recognizing unit and the data property stored in the acquired data property storing unit, whether the external sensor data is required to be recorded, and a data recording unit records the external sensor data when it is determined by the data recording necessity determining unit that the external sensor data is required to be recorded.

External sensor data is efficiently recorded without changing a resolution or a sampling rate. In a data recording device, an acquired data property storing unit stores, as a data property, an external environment in which external sensor data is to be recorded, an external sensor data property recognizing unit recognizes, as a data property, the external environment corresponding to the external sensor data, a data recording necessity determining unit determines, based on the data property recognized by the external sensor data property recognizing unit and the data property stored in the acquired data property storing unit, whether the external sensor data is required to be recorded, and a data recording unit records the external sensor data when it is determined by the data recording necessity determining unit that the external sensor data is required to be recorded.

Provided is a computer-implemented method for determining a communication status in a train consist operating in a distributed power system, the train consist including a lead locomotive and a plurality of remote locomotives. The method includes, for each remote locomotive of the plurality of remote locomotives that receives the command message directly from the lead locomotive, setting the message source indicator of the remote locomotive to a first state representative of a direct receipt of the command message, incrementing the message source counter for each response message received by the remote locomotive from other remote locomotives in which the respective message source indicator is set to the first state, generating a response message including a value of the message source indicator and a value of the message source counter, and transmitting the response message. A system and computer program product are also disclosed.

A method for wagon-to-wagon communication between wagons of a train is disclosed. The train includes a first train wagon and at least one further train wagon, the first train wagon having a first transmitter/receiver device, and the further train wagon having a further transmitter/receiver device. The first transmitter/receiver device sends a request message using short distance communication. The further transmitter/receiver device sends an acknowledgement to the first transmitter/receiver device using short distance communication. The first transmitter/receiver device sends a first identification code identifying the first train wagon to the further train wagon. A method for checking train integrity and a train wagon is also disclosed.

A method for wagon-to-wagon communication between wagons of a train is disclosed. The train includes a first train wagon and at least one further train wagon, the first train wagon having a first transmitter/receiver device, and the further train wagon having a further transmitter/receiver device. The first transmitter/receiver device sends a request message using short distance communication. The further transmitter/receiver device sends an acknowledgement to the first transmitter/receiver device using short distance communication. The first transmitter/receiver device sends a first identification code identifying the first train wagon to the further train wagon. A method for checking train integrity and a train wagon is also disclosed.