Health evaluation and prognostic method for non-monotonic dependent parameters

• US 10,124,752 B2
• Filed: 05/26/2016
• Issued: 11/13/2018
• Est. Priority Date: 05/26/2016
• Status: Active Grant

• Current Assignee: The Boeing Co.
• Original Assignee: The Boeing Co.
• Inventors: Boggio, John M.
• Primary Examiner(s): Kuan, John
• Application Number:
  US15/165,706
• Publication Number:
  US 20170341606A1
• Time in Patent Office: 901 Days
• Field of Search: None
• CPC Class Codes: B60R 16/0232 for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions
• CPC Class Codes: B64D 13/08 the air being heated or cooled
• CPC Class Codes: B64D 2013/0603 Environmental Control Systems
• CPC Class Codes: B64D 2045/0085 Devices for aircraft health monitoring, e.g. monitoring flutter or vibration
• CPC Class Codes: G06Q 10/063 Operations research, analysis or management
• CPC Class Codes: G06Q 10/107 Computer-aided management of electronic mailing [e-mailing]
• CPC Class Codes: G07C 5/0841 Registering performance data recording measured values G01D; information storage G11B

Abstract

A method of evaluating health of a control system with fluctuating parameters is provided. The method may include receiving session data including actual parameters and target parameters of the control system, segmenting the session data into one or more data segments, calculating a segment score for each data segment based on at least a linear regression correlation coefficient and an average parameter difference, generating a session score based on a combination of the segment scores, and generating a notification indicative of a comparison between the session score and a predefined threshold.

Claims

1. A method of evaluating health of a climate control system with fluctuating parameters, comprising:

measuring actual temperature parameters by one or more temperature sensors of a sensor network;

setting, at one or more temperature control devices, target temperature parameters;

receiving, at a controller, session data including the actual temperature parameters and the target temperature parameters from the climate control system;

segmenting, at the controller, the session data into one or more data segments;

calculating, at the controller, a segment score for each of the data segments based on at least one of a linear regression correlation coefficient and an average parameter difference;

generating, at the controller, a session score based on a combination of the segment scores;

generating, at the controller, an alert providing a notification indicative of a comparison between the session score and a predefined threshold; and

including the notification within a report of a flight data recorder, the notification including information pertaining to one or more failures.

2. The method of claim 1, wherein the target temperature parameters and the actual temperature parameters are of a cabin of an aircraft, and the notification is communicated to the flight data recorder.

3. The method of claim 1, wherein the session data is segmented into one or more data segments based on changes in the target temperature parameters.

4. The method of claim 1, wherein the segment score is further calculated based on a segment trend and a segment duration.

5. The method of claim 4, wherein the segment score is calculated according to a scoring algorithm, the scoring algorithm being configured to calculate the segment score based on the linear regression correlation coefficient of the actual temperature parameters, the average difference between the actual temperature parameters and the target temperature parameters, an average slope of the actual temperature parameters, a percentage of time the actual temperature parameters are not within an acceptable range of the target temperature parameters, and a duration of the data segment.

6. The method of claim 1, wherein the notification includes information pertaining to one or more failures in the temperature sensors, the temperature control devices, and the sensor network.

7. The method of claim 1, wherein the predefined threshold includes one or more session scores corresponding to previously obtained session data.

8. The method of claim 1, wherein the notification includes information pertaining to one or more failures in the climate control system responsible for controlling the actual temperature parameters.

9. A controller for evaluating health of a climate control system with fluctuating parameters, comprising:

one or more temperature sensors of a sensor network configured to detect one or more actual temperature parameters;

one or more temperature control devices configured to set a target temperature parameter;

a communication module configured to acquire session data including the actual temperature parameters and the target temperature parameters of the climate control system;

a segmentation module configured to segment the session data into one or more data segments;

a data analysis module configured to calculate a segment score for each of the data segments based on at least one of a linear regression correlation coefficient and an average parameter difference;

a scoring module configured to generate a session score based on a combination of the segment scores; and

wherein the communication module is further configured to generate a notification indicative of a comparison between the session score and a predefined threshold and include the notification within a report of a flight data recorder, the notification including information pertaining to one or more failures.

10. The controller of claim 9, wherein the target temperature parameters and the actual temperature parameters are of a cabin of an aircraft detected by one or more temperature sensors, the communication module further being configured to communicate the notification to the flight data recorder.

11. The controller of claim 9, wherein the segmentation module is configured to segment the session data into one or more data segments based on changes in the target temperature parameters, and the scoring module is configured to generate the session score based on the segment score and a segment duration of each of the data segments.

12. The controller of claim 9, wherein the data analysis module is configured to calculate the segment score according to a scoring algorithm, the scoring algorithm being configured to calculate the segment score based on the linear regression correlation coefficient of the actual temperature parameters, the average difference between the actual temperature parameters and the target temperature parameters, an average slope of the actual temperature parameters, a percentage of time the actual temperature parameters are not within an acceptable range of the target temperature parameters, and a duration of the data segment.

13. The controller of claim 9, wherein the predefined threshold includes one or more session scores corresponding to previously obtained session data, and the notification includes information pertaining to one or more failures in the climate control system responsible for controlling the actual temperature parameters.

14. An information management system for evaluating fluctuating temperature parameters, comprising:

a sensor network configured to detect one or more actual temperature parameters;

one or more temperature control devices configured to adjust the one or more actual temperature parameters by setting corresponding target temperature parameters; and

a controller in electrical communication with the sensor network and the temperature control devices, the controller configured to acquire session data based on the actual temperature parameters and the target temperature parameters, segment the session data into one or more data segments, calculate a segment score for each of the data segments based on at least a linear regression correlation coefficient and an average parameter difference, generate a session score based on a combination of the segment scores, generate a notification indicative of a comparison between the session score and a predefined threshold, and include the notification within a report of a flight data recorder, the notification including information pertaining to one or more failures.

15. The information management system of claim 14, wherein the target temperature parameters and the actual temperature parameters are of a cabin of an aircraft detected by one or more temperature sensors.

16. The information management system of claim 14, wherein the controller is configured to segment the session data into one or more data segments based on changes in the target temperature parameters.

17. The information management system of claim 14, wherein the controller is configured to calculate the segment score further based on a segment trend and a segment duration.

18. The information management system of claim 14, wherein the controller is configured to calculate the segment score according to a scoring algorithm, the scoring algorithm being configured to calculate the segment score based on the linear regression correlation coefficient of the actual temperature parameters, the average difference between the actual temperature parameters and the target temperature parameters, an average slope of the actual temperature parameters, a percentage of time the actual temperature parameters are not within an acceptable range of the target temperature parameters, and a duration of the data segment.

19. The information management system of claim 14, wherein the controller is configured to generate the session score based on the segment score and a segment duration of each of the data segments.

20. The information management system of claim 14, wherein the controller is further configured to communicate the notification to the flight data recorder, the predefined threshold including one or more session scores corresponding to previously obtained session data, the notification including information pertaining to one or more failures in the climate control system responsible for controlling the actual parameters.