Signal processing device and process and electrical apparatus comprising such a device
AssigneeSchneider Electric Industries SAS
InventorsRoland Moussanet, Pierre Perichon
Life of this patent
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Abstract
The signal processing device comprises determining means to supply an output signal having a value representative of a time constant of a part of an input signal having an appreciably exponential form. The determining means comprise first integrating means to supply a first integration signal representative of integration of the input signal in two opposite directions for appreciably equal times. Extraction means connected to the first integrating means supply a value representative of a time constant as a function of the first integration signal. The process comprises integration and extraction steps to supply the value representative of a time constant.
Claims16
A device for processing a signal comprising means for determining to supply an output signal having a value representative of a time constant of a part of an input signal having an appreciably exponential form,
- a device wherein the means for determining comprise:
- first integrating means to supply a first integration signal representative of integration of the input signal in a first direction during a first preset time and of integration of the input signal in a second direction opposite to the first direction during a second preset time succeeding the first time and of appreciably equal value to said first time, and
- extraction means connected to the first integrating means to supply, as a function of the first integration signal, the output signal having the value representative of a time constant of a part of a signal having an appreciably exponential form.
A processing process of a signal comprising a determining phase to supply a value representative of a time constant of a part of an input signal having an appreciably exponential form,
- wherein the determining phase comprises:
- a first step of integration of the input signal in a first direction during a first preset time,
- a second step of integration of the input signal in a second direction opposite from the first direction during a second preset time appreciably equal to the first time and succeeding said first step, and
- an extraction step to supply the value representative of a time constant as a function of a signal integrated by the first and second integration step.
Dependencies are inferred from the claim text.