Active oil debris monitor particle detection and monitoring system
A method for determining the presence of a particle while actively calculating and monitoring oil debris monitor phase angle in an oil system including collecting I and Q channel data from an oil debris monitor sensor; determining whether the I and Q data is symmetric; processing the I and Q channel data to identify a ferrous and nonferrous signal in response to the I and Q data being symmetric; processing the ferrous and nonferrous signals to determine if a particle is present; determining a symmetry factor from the I and Q channel data in response to the particle being present and confirming that the particle is present from the symmetry factor.
1. A method for determining the presence of a particle while actively calculating and monitoring oil debris monitor phase angle in an oil system, comprising: a) collecting I and Q channel data from an oil debris monitor sensor; b) determining whether the I and Q channel data is symmetric; c) processing the I and Q channel data to identify a ferrous and nonferrous signal in response to the I and Q channel data being symmetric in step b); d) processing the ferrous and nonferrous signals to determine if the particle is present; e) determining a symmetry factor from the I and Q channel data in response to the particle present in step d); and f) confirming that the particle is present from the symmetry factor.
2. The method as recited in claim 1 , wherein step b) comprises determining if lobe peaks are symmetric.
3. The method as recited in claim 1 , wherein the ferrous and nonferrous signals are used for particle detection.
4. The method as recited in claim 1 , wherein said step d) comprises filtering and phase adjusting the ferrous and nonferrous signals.
5. The method as recited in claim 1 , further comprising continually filling a buffer of a controller with the I and Q channel data.
6. The method as recited in claim 1 , further comprising converting the I and Q channel data to digital I and Q data within a controller on-board an aircraft.
7. The method as recited in claim 6 , further comprising locating the oil debris monitor sensor within an oil supply path.
8. The method as recited in claim 6 , further comprising locating the oil debris monitor sensor within an oil return path.
9. The method as recited in claim 1 , wherein the symmetry factor=peak/absolute value of the I and Q channel data.
10. The method as recited in claim 9 , wherein the particle is rejected in response to the symmetry factor being less than a threshold.
11. The method as recited in claim 10 , wherein the threshold is between 1-4.
12. The method as recited in claim 9 , wherein the symmetry factor is applied to the I channel data.
13. The method as recited in claim 9 , wherein the symmetry factor is applied to the Q channel data.
14. An oil system for a gas turbine engine, comprising: an oil flow path; an in-line oil debris monitor sensor; and a control system in communication with the in-line oil debris monitor sensor to collect I and Q channel data from the oil debris monitor sensor; determine whether the I and Q channel data is symmetric; process the I and Q channel data to identify a ferrous and nonferrous signal in response to the I and Q channel data being symmetric; process the ferrous and nonferrous signals to determine if the particle is present; determine a symmetry factor from the I and Q channel data in response to the particle present; and confirm that the particle is present from the symmetry factor.
15. The system as recited in claim 14 , wherein the oil flow path is in communication with a geared architecture of the gas turbine engine.
16. The system as recited in claim 14 , wherein the oil flow path is an oil supply path.
17. The system as recited in claim 14 , wherein the oil flow path is an oil return path.
18. The system as recited in claim 14 , further comprising a chip collector within the oil flow path.
19. The system as recited in claim 14 , wherein the control system comprises a controller.