Patent Document ID: 9558601
Application ID: 14695081
Patent Status: 1

Claim One:
1. A method for detecting vehicle system faults, the method comprising: detecting a predetermined characteristic of a vehicle with one or more sensors onboard the vehicle; obtaining a plurality of sensor signals corresponding to the predetermined characteristic from the one or more sensors; receiving, with a processor onboard the vehicle, the plurality of sensor signals from the one or more sensors onboard the vehicle; thresholding, with the processor, the plurality of sensor signals for each respective sensor substantially in real time; identifying transient instabilities in the dynamics of the plurality of sensor signals by generating, with the processor, abnormal derivative frequency values for each of the plurality of thresholded sensor signals in real time, where the transient instabilities are within a predetermined normal operating range of the one or more sensors, and determining an operational status of at least each of the one or more sensors based on the abnormal derivative frequency values identifying the transient instabilities; and communicating the operational status of the one or more sensors to an operator or crew member of the vehicle.