Patent ID: 8243037

Claim:
A system for processing a signal from an electric device, wherein said system comprises: one or more computer storage devices for storing: a reference value for the signal, wherein said reference value is continuously updated and adapted to an actual value of the signal; a spectrum of possible difference values, wherein: said spectrum is subdivided into ranges corresponding with possible causes for a change of the signal in the system; at least one range corresponds with temperature fluctuations; at least one range corresponds with noise; at least one range corresponds with hysteresis effects; and at least one range corresponds with at least one of the relevant changes in the electronic device; and one or processing units programmed to: determine a difference value between the signal and the reference value, so that difference value corresponds with a change of the signal; associate the difference value with the corresponding range of the spectrum; and identify if the difference value results from a disturbance or from a relevant change in the electric device; wherein: the spectrum includes all of the possible positive and negative difference values in view of the electric device for identifying positive and negative changes of the signal; each of the ranges corresponds with a certain causation of the changes of the received signal; and by comparing the change of the signal with the spectrum by the one or more processing units the causation of said change is recognizable.