Method to determine on-board network state of vehicle; involves evaluating instantaneous or time-averaged voltage from which transient alterations has been filtered as battery voltage, and assessing whether this reaches critical threshold

摘要

The method involves determining whether the vehicle battery voltage for the on-board network reaches a threshold level, which represents a critical network state. After each network situation an instantaneous voltage or a voltage averaged over a long time, from which the short term voltage alterations has been filtered is evaluated as the battery voltage. An Independent claim is included for a device for implementing the method.