Patent ID: 11860124
Assignee: RTX CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 14:
15. An oil system for a gas turbine engine, comprising:
an oil flow path;
an in-line oil debris monitor sensor;
a controller in communication with the in-line oil debris monitor sensor to determine whether a particle is present, a detection threshold for presence of the particle determined as a function of background noise; and
a tangible, non-transitory memory configured to communicate with the controller, the tangible, non-transitory memory having instructions stored thereon that, in response to execution by the controller, perform operations comprising:
processing ferrous and nonferrous signals to determine signal peaks above a detection threshold;
adjusting the detection threshold if more signal peaks are observed than allowable particles in a given time window; and
summing a discrete rate limit influence continuously over a window to calculate the rate limit.