EXTENDABLE CONDITION-BASED MAINTENANCE

• US 20150302666A1
• Filed: 04/17/2015
• Published: 10/22/2015
• Est. Priority Date: 04/17/2014
• Status: Active Grant

• Current Assignee: Lockheed Martin Corporation (Martin Marietta Corporation)
• Original Assignee: Lockheed Martin Corporation (Martin Marietta Corporation)
• Inventors: Das, Sreerupa, Foster, Joshua P., Mortimer, Ryan A.
• Granted Patent: US 9,501,874 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G05B 23/0213 Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
• CPC Class Codes: G07C 5/006 Indicating maintenance
• CPC Class Codes: G07C 5/0808 Diagnosing performance data testing of vehicles G01M17/00; testing of electrical installation on vehicles G01R31/005

Abstract

A flexible condition-based maintenance (CBM) device is disclosed. A CBM device receives a plurality of sensor signals generated by corresponding sensors. The sensor signals indicate real-time conditions of components. The sensor signals are processed to generate sensor data that quantifies the real-time conditions of the components. The CBM device loads a CBM module that implements a plurality of externally invokable functions. The CBM device receives an analytics script. The first analytics script comprises a plurality of interpretable commands, and some of the plurality of interpretable commands are configured to invoke some of the plurality of externally invokable functions. The CBM module invokes a command interpreter module to interpret at least one interpretable command and generate command executable bytecodes. The command executable bytecodes are executed to generate a notification identifying a real-time condition of a component for presentation on a display device.

Claims

1. A method for implementing condition-based maintenance (CBM) on a machine having a plurality of components, comprising:

receiving, by a CBM device comprising a processor, a plurality of sensor signals generated by a plurality of corresponding sensors, the plurality of sensor signals indicating real-time conditions of corresponding components of the plurality of components;

processing the plurality of sensor signals to generate sensor data that quantifies the real-time conditions of the corresponding components;

loading, by the CBM device, a CBM module generated at a first time and implementing a plurality of externally invokable functions;

receiving, by the CBM device, a first analytics script generated at a second time, the first analytics script comprising a plurality of first interpretable commands, some of the plurality of first interpretable commands configured to invoke some of the plurality of externally invokable functions;

invoking, by the CBM module, a command interpreter module to interpret at least one first interpretable command and generate first command executable bytecodes; and

executing the first command executable bytecodes to generate a notification identifying a real-time condition of a first component for presentation on a display device.

2. The method of claim 1, further comprising:

detecting, by the CBM module, the at least one first interpretable command in the first analytics script, the at least one first interpretable command configured to invoke a first externally invokable function of the plurality of externally invokable functions; and

wherein invoking the command interpreter module to interpret the at least one first interpretable command and generate the first command executable bytecodes further comprises;

passing, by the CBM module, the at least one first interpretable command to the command interpreter module; and

generating, by the command interpreter module based on the at least one first interpretable command, the first command executable bytecodes that invoke the first externally invokable function; and

wherein executing the first command executable bytecodes to generate the notification identifying the real-time condition of the first component for presentation on the display device further comprises;

invoking, by the first command executable bytecodes, the first externally invokable function to access the sensor data that quantifies the real-time condition of the first component; and

generating the notification identifying the real-time condition of the first component for presentation on the display device.

3. The method of claim 1, wherein processing the sensor signals to generate the sensor data that quantifies the real-time conditions of the corresponding components comprises filtering the sensor signals and extracting features from the sensor signals to generate the sensor data.

4. The method of claim 1, wherein the CBM module is written in a first programming language having a first syntax, and the plurality of first interpretable commands is written in a second interpretable programming language having a second syntax that is different from the first syntax.

5. The method of claim 4, wherein the plurality of first interpretable commands comprises English language words.

6. The method of claim 1, further comprising:

determining, by the first command executable bytecodes, based on the sensor data, that a characteristic of the first component is outside of a first predetermined range; and

generating, by the first command executable bytecodes, an alert for presentation on the display device that indicates that the characteristic of the first component is outside of the first predetermined range.

7. The method of claim 6, further comprising:

receiving a second analytics script generated at a third time that is later than the second time, the second analytics script replacing the first analytics script, the second analytics script comprising a plurality of second interpretable commands, some of the plurality of second interpretable commands configured to invoke some of the plurality of externally invokable functions;

invoking, by the CBM module, the command interpreter module to interpret at least one second interpretable command and generate second command executable bytecodes;

executing the second command executable bytecodes;

determining, by the second command executable bytecodes, based on the sensor data, that the characteristic of the first component is outside of a second predetermined range that is different from the first predetermined range; and

generating, by the second command executable bytecodes, an alert for presentation on the display device that indicates that the characteristic of the second component is outside of the first predetermined range.

8. The method of claim 7, wherein the characteristic of the first component comprises one of an engine oil temperature and an engine coolant temperature.

9. The method of claim 1, further comprising:

processing, by the CBM module, the first analytics script; and

assigning, by the CBM module based on the first analytics script, each sensor of the plurality of sensors a corresponding port value, and wherein the plurality of first interpretable commands is configured to access the sensor data associated with a corresponding sensor based on the corresponding port value.

10. The method of claim 1, wherein receiving the first analytics script generated at the second time comprises:

interfacing with a remote device; and

receiving the first analytics script generated at the second time from the remote device.

11. A condition-based maintenance (CBM) device for implementing CBM on a machine having a plurality of components, comprising:

a sensor interface configured to be coupled to a plurality of sensors;

a communication interface configured to communicate with a remote device;

a controller comprising a processor coupled to the sensor interface and the communication interface, and configured to;

receive sensor signals generated by corresponding sensors of the plurality of sensors, the sensor signals indicating real-time conditions of corresponding components of the plurality of components;

process the plurality of sensor signals to generate sensor data that quantifies the real-time conditions of the corresponding components;

load a CBM module generated at a first time and implementing a plurality of externally invokable functions;

receive a first analytics script generated at a second time, the first analytics script comprising a plurality of first interpretable commands, some of the plurality of first interpretable commands configured to invoke some of the plurality of externally invokable functions;

invoke, via the CBM module, a command interpreter module to interpret at least one first interpretable command and generate first command executable bytecodes; and

execute the first command executable bytecodes to generate a notification identifying a real-time condition of a first component for presentation on a display device.

12. The CBM device of claim 11, wherein the controller is further configured to:

detect, via the CBM module, the at least one first interpretable command in the first analytics script, the at least one first interpretable command configured to invoke a first externally invokable function of the plurality of externally invokable functions; and

wherein to invoke the command interpreter module to interpret the at least one first interpretable command and generate the first command executable bytecodes, the controller is further configured to;

pass, via the CBM module, the at least one first interpretable command to the command interpreter module; and

generate, via the command interpreter module based on the at least one first interpretable command, first command executable bytecodes that invoke the first externally invokable function; and

wherein to execute the first command executable bytecodes to generate the notification identifying the real-time condition of the first component for presentation on the display device, the controller is further configured to;

invoke, via the first command executable bytecodes, the first externally invokable function to access the sensor data that quantifies the real-time condition of the first component; and

generate the notification identifying the real-time condition of the first component for presentation on the display device.

13. The CBM device of claim 11, wherein to process the sensor signals to generate the sensor data that quantifies the real-time conditions of the corresponding components, the controller is further configured to filter the sensor signals and extract features from the sensor signals to generate the sensor data.

14. The CBM device of claim 11, wherein the CBM module is written in a first programming language having a first syntax, and the plurality of first interpretable commands is written in a second interpretable programming language having a second syntax that is different from the first syntax.

15. The CBM device of claim 14, wherein the plurality of first interpretable commands comprises English language words.

16. The CBM device of claim 11, wherein the controller is further configured to:

determine, via the first command executable bytecodes, based on the sensor data, that a characteristic of the first component is outside of a first predetermined range; and

generate, via the first command executable bytecodes, an alert for presentation on the display device that indicates that the characteristic of the first component is outside of the first predetermined range.

17. The CBM device of claim 16, wherein the controller is further configured to:

receive a second analytics script generated at a third time that is later than the second time, the second analytics script replacing the first analytics script, the second analytics script comprising a plurality of second interpretable commands, some of the plurality of second interpretable commands configured to invoke some of the plurality of externally invokable functions;

invoke, via the CBM module, the command interpreter module to interpret at least one second interpretable command and generate second command executable bytecodes;

execute the second command executable bytecodes;

determine, via the second command executable bytecodes, based on the sensor data, that the characteristic of the first component is outside of a second predetermined range that is different from the first predetermined range; and

generate, via the second command executable bytecodes, an alert for presentation on the display device that indicates that the characteristic of the second component is outside of the first predetermined range.

18. The CBM device of claim 17, wherein the characteristic of the first component comprises one of an engine oil temperature and an engine coolant temperature.

19. A method for implementing condition-based maintenance (CBM) on a machine, comprising:

receiving, by a CBM device comprising a processor, a plurality of sensor signals from a plurality of corresponding sensors, the plurality of sensor signals being indicative of real-time conditions of corresponding components;

accessing, by a CBM module implementing a plurality of externally invokable functions, a first analytics script generated at a point in time, the first analytics script comprising a plurality of first interpretable commands, some of the plurality of first interpretable commands invoking some of the plurality of externally invokable functions; and

in response to a first real-time condition of a respective corresponding component, causing, by the CBM module, execution of a respective first interpretable command to generate an alert for presentation on a display device that indicates that a characteristic of the respective corresponding component is outside of a first predetermined range.