Guideway mounted vehicle localization system
First Claim
1. A system, comprising:
- a set of sensors on a first end of a vehicle having the first end and a second end, the sensors of the set of sensors each being configured to generate corresponding sensor data based on a detected marker of a plurality of markers along a direction of movement of the vehicle, a first sensor of the set of sensors has a first inclination angle with respect to a horizon line, and a second sensor of the set of sensors has a second inclination angle with respect to the horizon line; and
a controller coupled with the set of sensors, the controller being configured to;
compare a time at which the first sensor detected the marker of the plurality of markers with a time at which the second sensor detected the marker of the plurality of markers; and
calculate a position of the first end of the vehicle based on a distance between a first marker of the plurality of markers and the detected marker of the plurality of markers.
1 Assignment
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Accused Products
Abstract
A system comprises a set of sensors on a first end of a vehicle having the first end and a second end, and a controller. The sensors are configured to generate corresponding sensor data based on a detected marker along a direction of movement of the vehicle. A first sensor has a first inclination angle with respect to the detected marker, and a second sensor has a second inclination angle with respect to the detected marker. The controller is configured to compare a time at which the first sensor detected the marker with a time at which the second sensor detected the marker to identify the first end or the second end as a leading end of the vehicle, and to calculate a position of the leading end of the vehicle based on the sensor data generated by one or more of the first sensor or the second sensor.
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Citations
22 Claims
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1. A system, comprising:
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a set of sensors on a first end of a vehicle having the first end and a second end, the sensors of the set of sensors each being configured to generate corresponding sensor data based on a detected marker of a plurality of markers along a direction of movement of the vehicle, a first sensor of the set of sensors has a first inclination angle with respect to a horizon line, and a second sensor of the set of sensors has a second inclination angle with respect to the horizon line; and a controller coupled with the set of sensors, the controller being configured to; compare a time at which the first sensor detected the marker of the plurality of markers with a time at which the second sensor detected the marker of the plurality of markers; and calculate a position of the first end of the vehicle based on a distance between a first marker of the plurality of markers and the detected marker of the plurality of markers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method, comprising:
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generating sensor data based on a detection of a marker of a plurality of markers along a direction of movement of a vehicle having a first end and a second end using a set of sensors on the first end of the vehicle, wherein each sensor of the set of sensors on the first end of the vehicle is configured to generate corresponding sensor data, a first sensor of the set of sensors has a first inclination angle with respect to a horizon line, and a second sensor of the set of sensors has a second inclination angle with respect to the horizon line; comparing a time the first sensor detected the marker of the plurality of markers with a time the second sensor detected the marker of the plurality of markers; count a quantity of markers of the plurality of markers detected by the set of sensors during a predetermined duration of time; search a memory for the stored distance between each pair of markers of the plurality of markers detected by the set of sensors during the predetermined duration of time, the memory having stored therein a distance separating pairs of markers of the plurality of markers; and add the distances between each pair of markers of the plurality of markers for the quantity of markers detected by the set of sensors to determine a distance the vehicle traveled during the predetermined duration of time, wherein the distances between each pair of markers of the plurality of markers is determined based on; searching a memory for the stored distance between each pair of markers of the plurality of markers detected by the set of sensors during the predetermined duration of time, the memory having stored therein a distance separating pairs of markers of the plurality of markers;
orcounting a quantity of markers of the plurality of markers detected by the set of sensors on the first end of the vehicle within a predetermined duration of time and calculating a distance the vehicle traveled during the predetermined duration of time based on a total quantity of the detected markers and an equal distance between each of the markers of the plurality of markers. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification