Method and system for telematics location sensing
First Claim
1. A method of determining a current telematics device geographic location in the absence of valid GPS data, the method comprising:
- receiving first odometer information and second odometer information and receiving positional information, the positional information including velocity information;
determining a first estimated distance traveled value based on the first and second odometer information and determining a second estimated distance traveled value based on the received positional information;
selecting one of the first and second estimated distance traveled values as a primary distance traveled value by comparing the first and second estimated distance traveled values and determining if the difference between the first and second estimated distance traveled values exceeds a predetermined tolerance value; and
determining a current telematics device geographic location based on the selected primary distance traveled value in the absence of valid GPS data.
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Abstract
The present invention provides a method of operating a telematics device within a mobile vehicle communication system to provide a current telematics device geographic location. The method includes receiving odometer information including velocity information for a specified time period, and receiving positional information including velocity information for a specified time period. The method further includes determining a first distance traveled value based on the received odometer information and determining a second distance traveled value based on the received positional information. The method additionally includes selecting one of the first and second distance traveled values as a primary distance traveled value based on predetermined criteria, and determining a current telematics device geographic location based on the primary distance traveled value. The odometer information may include velocity information from a power-train sensor. The positional information may include velocity information from one or more wheel sensors.
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Citations
7 Claims
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1. A method of determining a current telematics device geographic location in the absence of valid GPS data, the method comprising:
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receiving first odometer information and second odometer information and receiving positional information, the positional information including velocity information; determining a first estimated distance traveled value based on the first and second odometer information and determining a second estimated distance traveled value based on the received positional information; selecting one of the first and second estimated distance traveled values as a primary distance traveled value by comparing the first and second estimated distance traveled values and determining if the difference between the first and second estimated distance traveled values exceeds a predetermined tolerance value; and determining a current telematics device geographic location based on the selected primary distance traveled value in the absence of valid GPS data. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification