SYSTEM AND METHOD FOR ESTIMATING AND DETECTING SPEED
First Claim
1. A system comprising:
- a controller that is operable to receive information for a mobile asset from which a location envelope in which the mobile asset is located, an indicated direction of travel of the mobile asset, and an indicated speed of the mobile asset can be derived, the controller also operable to derive, at a sample time, the location envelope, the indicated speed, and the direction of travel and to select a first governing speed for the mobile asset based at least in part on the derived location envelope and the direction of travel.
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Accused Products
Abstract
A system for determining instances when a vehicle'"'"'s indicated speed exceeds a governing speed includes a receiver to receive information from which a vehicle'"'"'s location envelope, indicated direction of travel, and indicated speed can be derived, and a processor. The processor is configured to ascertain a location envelope in which the vehicle is located, an indicated speed of the vehicle, and a direction of travel of the vehicle at a sample time. It is also configured to and select the governing speed for the vehicle at the sample time, which includes ascertain possible road segments with at least a portion within the location envelope, eliminate road segments with a road segment direction of travel inconsistent with the indicated direction of travel, and select as the governing speed a speed associated with a remaining road segment. The processor will then determine if the indicated speed exceeds the governing speed.
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Citations
23 Claims
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1. A system comprising:
a controller that is operable to receive information for a mobile asset from which a location envelope in which the mobile asset is located, an indicated direction of travel of the mobile asset, and an indicated speed of the mobile asset can be derived, the controller also operable to derive, at a sample time, the location envelope, the indicated speed, and the direction of travel and to select a first governing speed for the mobile asset based at least in part on the derived location envelope and the direction of travel. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method comprising:
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receiving information for a mobile asset from which a location envelope in which the mobile asset is located, an indicated direction of travel of the mobile asset, and an indicated speed of the mobile asset can be derived; deriving the location envelope, the indicated speed, and the direction of travel; selecting a first governing speed for the mobile asset based at least in part on the derived location envelope and the direction of travel. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A system comprising:
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a receiver configured to receive information representative of a location of a mobile asset; and a processor configured to derive a location envelope of the mobile asset, an indicated direction of travel of the mobile asset, and an indicated speed of the mobile asset from the information that is received, the processor further configured to obtain plural potential route segments on which the mobile asset could be traveling on in the location envelope, the potential route segments associated with respective governing speeds and respective directions of travel, the processor also configured to identify a first route segment from the potential route segments based at least in part on a comparison of the indicated direction of travel of the mobile asset with the directions of travel associated with the potential route segments and to determine a first governing speed associated with the first route segment, wherein the processor is configured to determine whether movement of the mobile asset exceeds the first governing speed based at least in part on the indicated speed. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification