Motor vehicle acceleration determining system
First Claim
1. A method for analyzing accelerations as a road segment characteristic in a vehicle, the method comprising:
- identifying a road segment from map data based on a current position;
measuring a plurality of acceleration values or a plurality of velocity values within the identified road segment;
reading stored parameter data indicative of a probability distribution of acceleration associated with the identified road segment from a memory device;
calculating updated parameter data indicative of a probability distribution of acceleration with the identified road segment using the stored parameter data and at least one of the plurality of acceleration values or the plurality of velocity values;
storing the updated parameter data indicative of the probability distribution in the memory device;
determining a reliability indicator in addition to the calculated updated parameter data; and
storing the calculated updated parameter data indicative of the probability distribution of acceleration with the reliability indicator associated with the calculated updated parameter data.
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Accused Products
Abstract
Systems and methods for analyzing acceleration as a road segment characteristic in a vehicle are provided for determining information about a route including for example, the estimated fuel consumption of the route. An example of a system includes a data storage medium for storing map data having road segments, a bus interface to a data bus for receiving measured values of a velocity or an acceleration from a velocity or acceleration sensor, a position data receiver configured to receive position data for determining a current position, and a system controller. The system controller is configured to identify a road segment associated with the current position. The system controller retrieves parameters of a probability distribution of acceleration associated with the identified road segment from the data storage medium. Updated parameters of the probability distribution of acceleration are determined from the measured values of the velocity or acceleration.
12 Citations
18 Claims
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1. A method for analyzing accelerations as a road segment characteristic in a vehicle, the method comprising:
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identifying a road segment from map data based on a current position; measuring a plurality of acceleration values or a plurality of velocity values within the identified road segment; reading stored parameter data indicative of a probability distribution of acceleration associated with the identified road segment from a memory device; calculating updated parameter data indicative of a probability distribution of acceleration with the identified road segment using the stored parameter data and at least one of the plurality of acceleration values or the plurality of velocity values; storing the updated parameter data indicative of the probability distribution in the memory device; determining a reliability indicator in addition to the calculated updated parameter data; and storing the calculated updated parameter data indicative of the probability distribution of acceleration with the reliability indicator associated with the calculated updated parameter data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for analyzing acceleration as a road segment characteristic in a vehicle comprising:
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a memory device for storing map data having road segments; a bus interface to a data bus for receiving measured values of a velocity or an acceleration from a velocity or acceleration sensor; a position data receiver configured to receive position data for determining a current position; a system controller configured to identify a road segment associated with the current position, to use parameter data indicative of a probability distribution of acceleration stored in the memory device where the parameter data is associated with the identified road segment, and to determine updated parameter data of the probability distribution of acceleration from the measured values of the velocity or acceleration, and to determine a reliability indicator in addition to the calculated updated parameter data, and storing the calculated updated parameter data indicative of the probability distribution of acceleration and the reliability indicator associated with the calculated updated parameter data. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification