Digital measurement input for an electric automation device, electric automation device comprising a digital measurement input, and method for processing digital input measurement values

An electric automation device, comprising:

• a digital measurement input, containing:
• a receiving device configured to receive digital input measurement values which have been generated by sampling an analog measurement signal at a first sampling rate via a merging unit being different from the electric automation device;
• and
• a signal conversion device configured to form and provide digital output measurement values from the digital input measurement values, at least one of a sampling rate or sampling times of the digital output measurement values is adapted to at least one of a specified sampling rate or specified sampling times, said signal conversion device having a digital encoder filter on an input side and a decoder filter on an output side, between which an interpolator is disposed, said encoder filter, said interpolator and said decoder filter are matched to one another so that an adaptation of at least one of a sampling rate or sampling times of the digital input measurement values is effected by said signal conversion device.

A method for processing digital input measurement values having been generated by sampling an analog measurement signal at a first sampling rate, which comprises the steps of:

• receiving the digital input measurement values via a receiving device of a digital measurement input of an automation device, the digital input measurement values being generated in a merging unit being different from the automation device;
• forming and providing digital output measurement values with a signal conversion device of the digital measurement input from the digital input measurement values, at least one of a sampling rate or sampling times of the digital output measurement values are adapted to at least one of a specified sampling rate or specified sampling times;
• filtering the digital input measurement values with a digital encoder filter of the signal conversion device with formation of encoded digital input measurement values;
• interpolating the encoded digital input measurement values with an interpolator of the signal conversion device with formation of digital auxiliary measurement values;
• and
• filtering the digital auxiliary measurement values with a digital decoder filter of the signal conversion device with formation of the digital output measurement values, the encoder filter, the interpolator and the decoder filter are matched to one another so that they effect an adaptation of at least one of a sampling rate or sampling times of the digital input measurement values.