Systems and methods to isolate lower amplitude signals for analysis in the presence of large amplitude transients

摘要

Some embodiments concern a method of isolating low amplitude signals in one or more electrical signals. The method can include: using a data acquisition device to acquire one or more electrical signals; using a first processor to compute one or more first parameters related to the one or more electrical signals; using the first processor to determine one or more first portions of the one or more electrical signal that comprise one or more transient signals; using the first processor to selectively mask the one or more first portions of the one or more electrical signals to create one or more output signals; and adjusting a gain of the data acquisition device based upon one or more second parameters of the one or more output signals. Other embodiments are disclosed.

主权项

1. A method of isolating low amplitude signals in one or more electrical signals, the method comprising:
using a data acquisition device to acquire one or more electrical signals, the one or more electrical signals comprise one or more transient signals and one or more first signals, amplitudes of the one or more first signals are less than amplitudes of the one or more transient signals, and the data acquisition device is configured to acquire the one or more electrical signals from at least one electrical outlet as one or more analog signals and convert the one or more analog signals to one or more digital signals such that the one or more electrical signals comprise the one or more digital signals; using a first processor to compute one or more first parameters related to the one or more electrical signals, wherein using the first processor to compute the one or more first parameters comprises:
determining a median amplitude of the one or more electrical signals; anddetermining a median slope of the one or more electrical signals; using the first processor to determine one or more first portions of the one or more electrical signals that comprise the one or more transient signals, wherein determining the one or more first portions comprises:
using the first processor to determine the one or more first portions of the one or more electrical signals where at least one of the following is true:
an amplitude of the one or more first portions of the one or more electrical signals is greater than the median amplitude of the one or more electrical signals by a first predetermined amount; ora slope of the one or more first portions of the one or more electrical signals is greater than the median slope of the one or more electrical signals by a second predetermined amount; using the first processor to create one or more output signals; and adjusting a gain of the data acquisition device based upon one or more second parameters of the one or more output signals.