Systems and methods for deploying locomotives within a consist
An energy-management system of a train performs real-time assessment of operating parameters of the train and characteristics of a route using machine-learning algorithms. A consist management module within the energy-management system evaluates predictions of future performance by the train when different numbers of locomotives within a consist are inactive. Calculating and comparing operating benefits obtained from the predictions with respect to an upcoming distance, the consist management module identifies a number of locomotives to place in an isolation mode to provide efficient operation of the train. The number identified is provided to a driving strategy module for consideration in maneuvering the train over the upcoming distance.
1 . A computer-implemented method, comprising:
identifying addressable locomotives within a consist of a train, the addressable locomotives being individually addressable by a control system on the train;
receiving, during movement of the train along a path, current operating parameters of the train and characteristics of the path across an upcoming distance;
predicting, based at least in part on the current operating parameters and the characteristics, baseline operational metrics for the train across the upcoming distance under a baseline condition, the baseline condition being a baseline set of the addressable locomotives will be deployed;
predicting in real time, based at least in part on the current operating parameters and the characteristics, first operational metrics for the train across the upcoming distance under a first condition, the first condition being a first set of the addressable locomotives will be deployed;
calculating a baseline benefit from the baseline operational metrics;
calculating a first benefit from the first operational metrics, wherein calculating the baseline benefit and calculating the first benefit comprise identifying an operational metric for the train across the upcoming distance comprising at least one of fuel used, emissions released, or total energy consumed;
comparing the baseline benefit with the first benefit;
when the first benefit exceeds the baseline benefit, selecting the first set of addressable locomotives as an updated set of addressable locomotives; and
causing the updated set of addressable locomotives to be deployed for the train.
2 . The computer-implemented method of claim 1 , wherein causing the updated set of addressable locomotives to be deployed comprises deactivating a first of the addressable locomotives in the baseline set.
3 . The computer-implemented method of claim 2 , further comprising:
predicting in real time, based at least in part on the current operating parameters and the characteristics, second operational metrics for the train across the upcoming distance under a second condition, the second condition being a second set of the addressable locomotives will be deployed;
calculating a second benefit from the second operational metrics;
comparing the baseline benefit with the second benefit; and
when the second benefit exceeds the baseline benefit, selecting the second set of addressable locomotives as the updated set of addressable locomotives.
4 . The computer-implemented method of claim 1 , wherein causing the updated set of addressable locomotives to be deployed comprises activating a second of the addressable locomotives in the baseline set.
5 . The computer-implemented method of claim 2 , wherein deactivating the first of the addressable locomotives comprises sending instructions to the first of the addressable locomotives to operate in isolation mode or idle mode.
6 . The computer-implemented method of claim 1 , further comprising providing identification of the updated set of addressable locomotives to a driving strategy module within the control system, the driving strategy module determining driving behavior for the train over the upcoming distance based on the updated set of addressable locomotives being deployed.
7 . The computer-implemented method of claim 1 , wherein calculating a baseline benefit and calculating a first benefit comprise identifying a ratio of operational metrics for the train across the upcoming distance.
8 . The computer-implemented method of claim 7 , wherein the ratio of operational metrics is at least one of (fuel used)/(time lost), (train speed)/(speed limit), (motive force available)/(motive force required), or (emissions released)/(time lost).
9 . A control system for a consist of locomotives, comprising:
a consist storage module configured to store status data regarding the locomotives, the status data indicating availability of the locomotives for providing motive force along a route;
a prediction module configured to:
predict in real time, based at least in part on current operating parameters of a train moving along a path and characteristics of the path across an upcoming distance, baseline operational metrics expected for the train across the upcoming distance under a baseline condition, the baseline condition being that a group of the locomotives will be deployed, and
predict in real time, based at least in part on the current operating parameters and the characteristics, alternate operational metrics expected for the train across the upcoming distance under an alternate condition, the alternate condition being that a subset of the group of the locomotives will be deployed;
a consist management module configured to:
calculate a baseline benefit from the baseline operational metrics, calculate an alternate benefit from the alternate operational metrics, wherein calculating the baseline benefit and calculating the alternate benefit comprise identifying an operational metric for the train across the upcoming distance comprising at least one of fuel used, emissions released, or total energy consumed,
compare the baseline benefit with the alternate benefit,
when the alternate benefit exceeds the baseline benefit, assign the subset of the group of the locomotives as an updated assignment of the locomotives, and
cause the updated assignment of the locomotives to be deployed for the train; and
a driving strategy module configured to:
determine a strategy for controlling movement of the train over the path using the updated assignment of the locomotives.
10 . The control system of claim 9 , wherein the consist management module is further configured to cause the updated assignment of the locomotives to be deployed for the train by communicating instructions to a locomotive control system for one of the locomotives in the group of the locomotives to operate in an isolation mode.
11 . The control system of claim 9 , wherein the prediction module is further configured to:
predict in real time, based at least in part on the current operating parameters and the characteristics, additional operational metrics for the train across the upcoming distance under an additional condition, the additional condition being that a superset of the group of the locomotives will be deployed; and
wherein the consist management module is further configured to:
calculate an additional benefit from the additional operational metrics, compare the baseline benefit with the additional benefit, and
when the additional benefit exceeds the baseline benefit, assign the superset of the group of the locomotives as the updated assignment of the locomotives.
12 . The control system of claim 9 , wherein the consist storage module is further configured to update the status data in response to the updated assignment of the locomotives.
13 . The control system of claim 9 , wherein calculating the baseline benefit and calculating the alternate benefit comprise identifying a ratio of operational metrics for the train across the upcoming distance.
14 . A consist of locomotives for a train, comprising:
a lead locomotive containing, at least in part, a control system for the train;
a first locomotive individually addressable by the control system via a communication network;
a second locomotive individually addressable by the control system via the communication network; and
an energy-management system, at least partially contained within control system, the energy-management system configured to:
receive, during movement of the train along a path, current operating parameters of the train and characteristics of the path across an upcoming distance,
predict in real time, based at least in part on the current operating parameters and the characteristics, baseline operational metrics for the train across the upcoming distance under a baseline condition that the first locomotive and the second locomotive will be deployed,
predict in real time, based at least in part on the current operating parameters and the characteristics, alternate operational metrics for the train across the upcoming distance under an alternate condition that the first locomotive will be deployed and the second locomotive will not be deployed,
calculate a baseline benefit from the baseline operational metrics,
calculate an alternate benefit from the alternate operational metrics, wherein calculating the baseline benefit and calculating the alternate benefit are based, at least in part, on an operational metric for the train across the upcoming distance, the operation metric being one or more of fuel used, emissions released, or total energy consumed,
compare the baseline benefit with the alternate benefit, and
when the alternate benefit exceeds the baseline benefit, assign the baseline set without the second locomotive as an updated set of the locomotives; and
a locomotive control system, within at least the second locomotive, configured to cause the second locomotive to operate in an isolation mode in response to the assignment of the updated set by the energy-management system.
15 . The consist of claim 14 , wherein the energy-management system is further configured to:
store status data regarding the first locomotive and the second locomotive, the status data indicating availability of the first locomotive and the second locomotive for providing motive force along the path.
16 . The consist of claim 14 , wherein the energy-management system is further configured to:
determine a strategy for controlling movement of the train over the path using the updated set of the locomotives and communicating instructions according to the strategy to at least a locomotive control system.
17 . The consist of claim 14 , further comprising:
at least one additional locomotive in the train, the at least one additional locomotive not being individually addressable by the control system.
18 . The computer-implemented method of claim 1 , wherein the baseline benefit and the first benefit are at least one of fuel savings, decreased emissions, or lower noise.
19 . The control system of claim 9 , wherein the baseline benefit and the alternate benefit are at least one of fuel savings, decreased emissions, or lower noise.
20 . The consist of claim 14 , wherein the baseline benefit and the alternate benefit are at least one of fuel savings, decreased emissions, or lower noise.