Granted Patent B2

US 11,107,297 · App. 16/218,145 · Granted Aug 31, 2021

Inventor: Alan M. Duke (Ferrisberg, VT)

Assignee: Simmonds Precision Products, Inc.

G07C3/06G07C7/00

Abstract

Claims (71)

1. A method of monitoring a condition of a system, the method comprising:

receiving a first sampled signal having a first plurality of sampled points that originated from a process of sensing a component of a system over a dimension, the first sampled signal being sampled at a first sampling rate, and each first sampled point having an associated measured value and a dimension value;

receiving a second sampled signal having a second plurality of sampled points that originated from the sensing process and was sampled at a second sampling rate, the second sampled points each having an associated measured value and dimension value;

determining a first shift over the dimension between the first sampled signal and the second sampled signal at a first sampled point of the first sampled signal;

determining a second shift over the dimension between the first sampled signal and the second sampled signal at a second sampled point of the first sampled signal, the second sampled point being different than the first sampled point;

determining a calculated shift that is a function of the first shift and the second shift;

generating a merged signal that includes each of the first plurality of sampled points and each of the second plurality of sampled points shifted based on the calculated shift;

determining whether there is at least a threshold indication of failure based on analysis of the merged signal; and

disabling or recommending for removal the component in response to determining that there is at least a threshold indication of failure.

2. The method of claim 1 , wherein the first sampled point has a corresponding measured value MV 1 , and determining the first shift comprises:

selecting third and fourth consecutive sampled points of the second plurality of sampled points, the third and fourth sampled points having respective corresponding measured values MV 3 and MV 4 , wherein MV 3 ≤MV 1 <MV 4 ;

determining a first line having a first slope and a first intercept that passes through the third and fourth sampled points;

determining a first point on the first line that has measured value MV 1 ; and

determining the first shift to be a first distance between a first dimension value DV 1 that corresponds to the first sampled point and a second dimension value DV 2 that corresponds to the first point.

3. The method of claim 1 , wherein the second sampled point has a corresponding measured value MV 2 and dimension DV 3 , and determining the second shift comprises:

selecting third and fourth consecutive sampled points of the second plurality of sampled points, the third and fourth sampled points having respective corresponding measured values MV 4 and MV 5 , wherein MV 4 ≤MV 2 <MV 5 ;

determining a second line having a second slope and a second intercept that passes through the third and fourth sampled points;

determining a second point on the second line that has measured value MV 2 ; and

determining the second shift to be a second distance between a second dimension value DV 3 that corresponds to the second sampled point and a second dimension value DV 5 that corresponds to the second point.

4. The method of claim 1 , further comprising selecting the first and second sampled points along a ramped portion of the first sampled signal.

5. The method of claim 1 , wherein the first and second sampled points are not consecutive sampled points.

6. The method of claim 1 , wherein the first and second sampled points are consecutive sampled points.

7. The method of claim 1 , further comprising sampling the merged signal to generate a third plurality of sampled points, wherein determining whether there is at least the threshold indication of failure is performed by analyzing the third plurality of sampled points.

8. A condition monitoring system comprising:

a memory configured to store instructions;

a processor disposed in communication with the memory, wherein:

the processor, upon execution of the instructions is configured to:

receive a first sampled signal having a first plurality of sampled points that originated from a process of sensing a component of a system over a dimension, the first sampled signal being sampled at a first sampling rate, and each first sampled point having an associated measured value and a dimension value;

receive a second sampled signal having a second plurality of sampled points that originated from the sensing process and was sampled at a second sampling rate, the second sampled points each having an associated measured value and dimension value;

determine a first shift over the dimension between the first sampled signal and the second sampled signal at a first sampled point of the first sampled signal;

determine a second shift over the dimension between the first sampled signal and the second sampled signal at a second sampled point of the first sampled signal, the second sampled point being different than the first sampled point;

determine a calculated shift that is a function of the first shift and the second shift;

generate a merged signal that includes each of the first plurality of sampled points and each of the second plurality of sampled points shifted based on the calculated shift;

determine whether there is at least a threshold indication of failure based on analysis of the merged signal; and

perform an action to have the component disabled or removed in response to determining that there is at least a threshold indication of failure.

9. The condition monitoring (CM) system of claim 8 , wherein the first sampled point has a corresponding measured value MV 1 , and determining the first shift comprises:

selecting third and fourth consecutive sampled points of the second plurality of sampled points, the third and fourth sampled points having respective corresponding measured values MV 3 and MV 4 , wherein MV 3 ≤MV 1 <MV 4 ;

determining a first line having a first slope and a first intercept that passes through the third and fourth sampled points;

determining a first point on the first line that has measured value MV 1 ; and

determining the first shift to be a first distance between a first dimension value DV 1 that corresponds to the first sampled point and a second dimension value DV 2 that corresponds to the first point.

10. The condition monitoring (CM) system of claim 8 , wherein the second sampled point has a corresponding measured value MV 1 , and determining the second shift comprises:

selecting third and fourth consecutive sampled points of the second plurality of sampled points, the third and fourth sampled points having respective corresponding measured values MV 3 and MV 4 , wherein MV 3 ≤MV 1 <MV 4 ;

determining a first line having a first slope and a first intercept that passes through the third and fourth sampled points;

determining a first point on the first line that has measured value MV 1 ; and

determining the second shift to be a first distance between a first dimension value DV 1 that corresponds to the first sampled point and a second dimension value DV 2 that corresponds to the first point.

11. The condition monitoring (CM) system of claim 8 , wherein the processor, upon execution of the instructions is configured to select the first and second sampled points along a ramped portion of the first sampled signal.

12. The condition monitoring (CM) system of claim 8 , wherein the first and second sampled points are not consecutive.

13. The condition monitoring (CM) system of claim 8 , wherein the first and second sampled points are consecutive.

14. The condition monitoring (CM) system of claim 8 , wherein the processor, upon execution of the instructions is further configured to sample the merged signal to generate a third plurality of sampled points, wherein determining whether there is at least the threshold indication of failure is performed by analyzing the third plurality of sampled points.

15. A non-transitory computer readable storage medium having one or more computer programs stored therein, the computer programs comprising instructions, which when executed by a processor of a computer system, cause the processor to:

receive a first sampled signal having a first plurality of sampled points that originated from a process of sensing a component of a system over a dimension, the first sampled signal being sampled at a first sampling rate, and each first sampled point having an associated measured value and a dimension value;

receive a second sampled signal having a second plurality of sampled points that originated from the sensing process and was sampled at a second sampling rate, the second sampled points each having an associated measured value and dimension value;

determine a first shift over the dimension between the first sampled signal and the second sampled signal at a first sampled point of the first sampled signal;

determine a second shift over the dimension between the first sampled signal and the second sampled signal at a second sampled point of the first sampled signal, the second sampled point being different than the first sampled point;

determine a calculated shift that is a function of the first shift and the second shift;

generate a merged signal that includes each of the first plurality of sampled points and each of the second plurality of sampled points shifted based on the calculated shift;

determine whether there is at least a threshold indication of failure based on analysis of the merged signal; and

perform an action to have the component to be disabled or removed in response to determining that there is at least a threshold indication of failure.

16. The non-transitory computer readable storage medium of claim 15 , wherein the first sampled point has a corresponding measured value MV 1 , and determining the first shift comprises:

selecting third and fourth consecutive sampled points of the second plurality of sampled points, the third and fourth sampled points having respective corresponding measured values MV 3 and MV 4 , wherein MV 3 ≤MV 1 <MV 4 ;

determining a first line having a first slope and a first intercept that passes through the third and fourth sampled points;

determining a first point on the first line that has measured value MV 1 ; and

determining the first shift to be a first distance between a first dimension value DV 1 that corresponds to the first sampled point and a second dimension value DV 2 that corresponds to the first point.

17. The non-transitory computer readable storage medium of claim 15 , wherein the second sampled point has a corresponding measured value MV 1 , and determining the second shift comprises:

selecting third and fourth consecutive sampled points of the second plurality of sampled points, the third and fourth sampled points having respective corresponding measured values MV 3 and MV 4 , wherein MV 3 ≤MV 1 <MV 4 ;

determining a first line having a first slope and a first intercept that passes through the third and fourth sampled points;

determining a first point on the first line that has measured value MV 1 ; and

determining the second shift to be a first distance between a first dimension value DV 1 that corresponds to the first sampled point and a second dimension value DV 2 that corresponds to the first point.

18. The non-transitory computer readable storage medium of claim 15 , wherein the instructions when executed further cause the processor to select the first and second sampled points along a ramped portion of the first sampled signal.

19. The non-transitory computer readable storage medium of claim 15 , wherein the first and second sampled points are consecutive.

20. The non-transitory computer readable storage medium of claim 15 , wherein the instructions when executed further cause the processor to sample the merged signal to generate a third plurality of sampled points, wherein determining whether there is at least the threshold indication of failure is performed by analyzing the third plurality of sampled points.

Assignments (9)