Vehicle positioning system
AssigneeHitachi Rail GTS Canada Inc.
InventorsDavid Beach, Alon Green
Life of this patent
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Abstract
A vehicle positioning system includes processing circuitry in communication with the vehicle. The system further includes a memory connected to the processing circuitry, where the memory is configured to store executable instructions that, when executed by the processing circuitry, facilitate performance of operations. The operations include to receive vehicle-speed data from a first set of sensors operably coupled to the vehicle. The operations further include to predict a vehicle location based on the vehicle-speed data. The operations further include to receive inertial data from a second set of sensors operably coupled to the vehicle, and update the predicted vehicle location based upon the inertial data.
Claims20
A vehicle positioning system, the system comprising:
- a vehicle on a guideway;
- processing circuitry in communication with the vehicle;
- and
- a memory connected to the processing circuitry, wherein the memory is configured to store executable instructions that, when executed by the processing circuitry, facilitate performance of operations, comprising:
- receive vehicle-speed data from a first set of sensors operably coupled to the vehicle;
- predict a first-chain vehicle location based on the vehicle-speed data;
- receive inertial data from a second set of sensors operably coupled to the vehicle;
- update the predicted first-chain vehicle location based upon the inertial data;
- predict a second-chain vehicle location based on the inertial data;
- cross-check the predicted first-chain vehicle location against the predicted second-chain vehicle location, prior to updating the predicted first-chain vehicle location based upon the inertial data;
- and
- update the predicted second-chain vehicle location based upon the vehicle-speed data.
A non-transitory computer-readable storage medium, comprising executable instructions that, when executed by a processor, facilitate performance of operations, comprising:
- receiving vehicle-speed data from a first set of sensors operably coupled to a vehicle;
- predicting a first-chain vehicle location based on the vehicle speed data;
- receiving inertial data from a second set of sensors operably coupled to the vehicle;
- updating the predicted first-chain vehicle location based upon the inertial data;
- receiving the inertial data from the second set of sensors operably coupled to the vehicle;
- predicting a second-chain vehicle location based on the inertial data;
- and
- assigning a first weight to the predicted first-chain vehicle location or a second weight to the second-chain vehicle location based on cross-checking the predicted first-chain vehicle location and the predicted second-chain vehicle location.
A method of positioning a vehicle comprising:
- receiving vehicle speed data from a first set of sensors operably coupled to a vehicle;
- receiving vehicle inertial data from a second set of sensors operably coupled to the vehicle;
- predicting a first vehicle location with processing circuitry and based on the vehicle speed data;
- predicting a second vehicle location with the processing circuitry and based on the vehicle inertial data;
- cross-checking the first predicted vehicle location against the second predicted vehicle location prior to updating the predicted first-chain vehicle location based upon the inertial data;
- and
- determining whether one of the predicted first vehicle location and the predicted second vehicle location is unreliable based upon the cross-checking.
Dependencies are inferred from the claim text.