APPARATUS AND METHOD OF ESTIMATING ROAD SLOPE BY USING GRAVITATIONAL ACCELERATION SENSOR
First Claim
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1. An apparatus for estimating road slope by using a gravitational acceleration sensor comprising:
- a data detector configured to detect data for estimating road slope;
a navigation device configured to output road information according to a location of a vehicle; and
a controller configured to correct an error of the gravitational acceleration sensor by using an altitude value detected by the data detector and a current altitude of the vehicle according to the road information received from the navigation device.
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Abstract
An apparatus for estimating road slope by using a gravitational acceleration sensor may include a data detector configured to detect data for estimating road slope, a navigation device configured to output road information according to a location of a vehicle, and a controller configured to correct an error of the gravitational acceleration sensor by using an altitude value detected by the data detector and a current altitude of the vehicle according to the road information received from the navigation device.
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Citations
8 Claims
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1. An apparatus for estimating road slope by using a gravitational acceleration sensor comprising:
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a data detector configured to detect data for estimating road slope; a navigation device configured to output road information according to a location of a vehicle; and a controller configured to correct an error of the gravitational acceleration sensor by using an altitude value detected by the data detector and a current altitude of the vehicle according to the road information received from the navigation device. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of estimating road slope by using a gravitational acceleration sensor, comprising:
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receiving altitude information from a navigation device; calculating a current altitude of the vehicle based on the received altitude information; calculating an offset value based on a difference between an altitude value detected by a global positioning system (GPS) sensor and the current altitude of the vehicle; and correcting an error of the gravitational acceleration sensor by using the offset value. - View Dependent Claims (8)
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Specification