Patent ID: 9103684
Filing Date: 2015-08-11
Classification: G01C,G01S

Abstract:
1. A system for odometer calibration for a motor vehicle comprising: a speed sensor onboard the motor vehicle providing first speed data for the motor vehicle for a duration of operation of the motor vehicle; a global positioning system (GPS) controller onboard the motor vehicle providing GPS speed data for the motor vehicle for a portion of the duration of operation of the motor vehicle during which the GPS controller is active; a control module that computes an overall average speed based on the first speed data and the duration of operation of the motor vehicle, an intermittent average speed based on the first speed data and the portion of the duration of operation of the motor vehicle, and computes a GPS average speed based on the GPS speed data and the portion of the duration of operation of the motor vehicle; wherein the control module computes corrected odometer data based on the overall average speed, the GPS average speed, and the intermittent average speed; wherein the control module computes corrected odometer using the following equation: where D is corrected odometer data value for the motor vehicle, v aveGPS is average GPS speed data value, v aveSpeed is intermittent average speed data value, v overallaveSpeed is overall average speed data value, t is the duration, and D 1 is current odometer data value.