Patent ID: 11920811
Assignee: S.A. ARMSTRONG LIMITED
Field: Control (Instruments)
Classification: CPC F  G | IPC F  G

Claim 23:
24. A non-transitory computer readable medium including instructions recorded thereon which, when executed by at least one controller, causes the at least one controller to execute the instructions for a plurality of devices of a system, the instructions comprising:
for each device:
instructions for determining, by performing testing on the device using a testing facility where instant operating parameters can be controlled to be at a specific operating point, determined model values of a performance parameter of the device over an operating range of at least two operating parameters which affect the performance parameter, wherein each determined model value is representative of an operating point of the at least two operating parameters, the testing performed post manufacturing and prior to installation of the device, wherein the performance parameter comprises power consumed by the device or a variable in which the power consumed can be inferred;
instructions for storing to memory the determined model values of the performance parameter along with a time of said determining and a unique identifier of the device, wherein said determined model values are stored in the memory as a stored multi-dimensional performance table;
instructions for detecting, when the device is installed in the system, during real-time normal operation of the system, detected model values of the performance parameter of the device, with respect to the at least two operating parameters, and storing to the memory the detected model values along with the unique identifier of the device and a time of said detecting, wherein said detected model values are stored in the memory as a detected multi-dimensional performance table;
instructions for comparing, when the device is installed in the system, in real-time during normal operation of the system, the detected multi-dimensional performance table of the performance parameter of the device, with respect to the at least two operating parameters, with the stored multi-dimensional performance table and with one or more earlier multi-dimensional performance tables detected when the device is installed in the system; and
instructions for, in response to said comparing exceeding a respective threshold difference, outputting an alert or sending the alert to a communication device.