METHOD OF ALARMING EXACT COST OF REFUELING AND METHOD OF INPUTTING DATA AUTOMATICALLY INTO A DRIVER NOTE OF A NAVIGATION SYSTEM

摘要

A method of alarming an exact cost of refueling comprises: allowing a self-diagnosis device of a vehicle to check an amount of retained oil when turning off the ignition of the vehicle entering a filling station; allowing a navigation system installed in the vehicle to check the oil price of the filling station through a DMB signal; allowing a smartphone to receive a refueling cost message after completing refueling; allowing an application installed in the smartphone to transmit the an actual refueling cost contained in the received message to the navigation system; allowing the self-diagnosis device to check the amount of oil increasing when starting the vehicle and to transmit the checked increasing amount of oil to the navigation system; and allowing the navigation system to calculate the estimated refueling costs through the checked oil price and the transmitted increasing amount of oil, to compare the estimated refueling costs with the actual refueling costs, and to inform a driver whether the quantitative oil is refueled in the filling station.