Method and system for diagnosing machine malfunctions
First Claim
1. A method for diagnosing a malfunction of a machine, the method comprising:
- receiving sequential operating parameter data from a machine;
receiving a fault indication from the machine;
selecting sequential operating parameter data from a selectively focused time interval about the fault indication; and
using the selected sequential operating parameter data and the fault indication to diagnose a malfunction of the machine.
2 Assignments
0 Petitions
Accused Products
Abstract
A system (830) and method (800) for diagnosing a malfunctioning machine. A fault event is selected (806) together with sequential operating parameter data (808) from a selectively focused time interval about the fault event for evaluation of a machine (810). The selectively focused time interval may include data occurring just before, just after, or spanning the fault event. Characterizing information such as slope, rate of change, and absolute sign of the data may be derived (809) from the operating parameter data over the selectively focused time interval and used in the diagnosis. The fault event and operating parameter data may be compared to existing cases in a case database (834). A set of rules (817) or candidate anomalies (841) may be executed over the operating parameter data to further improve the accuracy of the diagnosis.
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Citations
24 Claims
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1. A method for diagnosing a malfunction of a machine, the method comprising:
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receiving sequential operating parameter data from a machine;
receiving a fault indication from the machine;
selecting sequential operating parameter data from a selectively focused time interval about the fault indication; and
using the selected sequential operating parameter data and the fault indication to diagnose a malfunction of the machine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 20, 21, 22, 24)
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13. A method of diagnosing a malfunction of a mobile vehicle, the method comprising:
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recording sequential operating parameter data from the vehicle;
receiving a fault indication from the vehicle;
selecting sequential operating parameter data from a selectively focused time interval about the fault indication; and
using the selected sequential operating parameter data and the fault indication to diagnose a malfunction of the vehicle.
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23. An apparatus for diagnosing a malfunction of a machine, the apparatus comprising;
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an operating parameter database containing sequential operating parameter data from a machine;
a fault log database containing fault log data from the machine;
a processor connected to the operating parameter database and the fault log database;
programmed instructions executable by the processor to select a fault event;
programmed instructions executable by the processor to select sequential operating parameter from a selectively focused time interval about the fault indication; and
programmed instructions executable by the processor to use the selected sequential operating parameter data and the fault event to diagnose a malfunction of the machine.
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Specification