Method for determining liquid level of tank in diesel vehicle, involves filtering signal spectrums by low pass filter, and backtransforming filtered signal into period of time so that backtransformed signal is set as liquid level signal

摘要

The method involves detecting the signal of a level sensor over a predetermined period of time. The detected signal is transformed into the frequency domain by Fourier transformation. The signal spectrums (202) are filtered with a low pass filter. The filtered signal is backtransformed into the period of time and the backtransformed signal is used as liquid level signal (220). Independent claims are included for the following: (1) computer program for determining liquid level of tank in diesel vehicle; and (2) computer program product for determining liquid level of tank in diesel vehicle.