US 2019/0196026 A1Published application

Real-Time Kinematics for End of Train

AssigneeWestinghouse Air Brake Technologies Corporation

InventorsStephen Craven, Jeffrey D. Kernwein

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Abstract

A method of determining geographic positions of a head of train (HOT) unit and an end of train (EOT) unit of a train includes receiving, by the HOT, first satellite radio position data and position correction data; determining, by the HOT, a first geographic location of the HOT based on the first satellite radio position data and the position correction data received by the HOT; receiving, by the EOT, second satellite radio position data; receiving, by the EOT from the HOT via a communication link, a copy of the position correction data received by the HOT; determining, by the EOT, a second geographic location of the EOT based on the second satellite radio position data and the position correction data received by the EOT; and receiving, by the HOT from the EOT, a copy of second geographic location of the EOT.

Claims20

Dependent claims

A method comprising:

(a) receiving, by first and second radio receivers mounted to respective lead and last vehicles of a train, satellite radio positioning data;
(b) receiving, by the first radio receiver, position correction data;
(c) determining first geographical position data corresponding to a first geographical position of the first radio receiver based on the position correction data received by the first radio receiver in step (b) and the satellite radio positioning data received by the first radio receiver in step (a);
(d) following step (b), receiving at the last vehicle of the train a copy of the position correction data received by the first radio receiver in step (b), wherein the copy of the position correction data received by the first radio receiver is communicated from the lead vehicle of the train to the last vehicle of the train;
(e) following step (d), determining second geographical position data corresponding to a second geographical position of the second radio receiver based on the position correction data received at the last vehicle of the train in step (d) and the satellite radio positioning data received by the second radio receiver in step (a);
and
(f) following step (e), receiving at the lead vehicle of the train from the last vehicle of the train the second geographical position data determined in step (e).

4 more elements

A method comprising:

(a) providing, in a first vehicle of a train, a head of train (HOT) unit;
(b) providing, in a second vehicle of the train, an end of train (EOT) unit;
(c) providing a radio communication link between the HOT and the EOT;
(d) receiving, by the HOT, first satellite radio position data and position correction data;
(e) determining, by the HOT, a first geographic location of the HOT based on the first satellite radio position data and the position correction data received by the HOT in step (d);
(f) receiving, by the EOT, second satellite radio position data;
(g) receiving, by the EOT from the HOT via the radio communication link, a copy of the position correction data received by the HOT in step (d);
(h) determining, by the EOT, a second geographic location of the EOT based on the second satellite radio position data and the position correction data received by the EOT in step (g);
and
(i) receiving, by the HOT from the EOT, a copy of second geographic location of the EOT.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/855,427Filed 27 Dec 2017
Published: 27 Jun 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

G01S 19/50
Determining position: whereby the position solution is constrained to lie upon a particular curve or surface, e.g. for locomotives on railway tracks
G01S 19/071
Providing data for correcting measured positioning data, e.g. DGPS [differential GPS] or ionosphere corrections: dGPS corrections
G01S 19/14
Receivers: specially adapted for specific applications
G01S 19/41
Correcting position, velocity or attitude: differential correction, e.g. DGPS [differential GPS]