Patent ID: 11914003
Assignee: ROSEMOUNT AEROSPACE INC.
Field: Measurement (Instruments)
Classification: CPC G  H  B | IPC G  H

Claim 8:
9. A method for predicting failure of a resistive heating element of an air data probe, the method comprising:
providing, via an electrical power source, electrical operating power to the resistive heating element;
sensing, via an electrical sensor, electrical current provided to the resistive heating element;
detecting, via a high-frequency signal detector, high-frequency components of the electrical current sensed;
detecting, via the high-frequency signal detector, high-frequency components of voltage of the electrical operating power provided to the resistive heating element; and
estimating, via a remaining-life prediction engine, a remaining life of the resistive heating element based on high-frequency components of the electrical current detected, wherein the remaining-life prediction engine estimates the remaining life of the resistive heating element based on a ratio of the high-frequency components of the electrical current detected to the high-frequency components of the voltage of the electrical operating power provided to the resistive heating element.