公开(公告)号：EP4184179A1

公开(公告)日：2023-05-24

申请号：EP22020563.7

申请日：2022-11-16

申请人： Uniks S.r.l.

发明人： Scuro, Francesco ,  Ronconi, Stefano

IPC分类号： G01R15/12 ,  G01R27/16 ,  G01R19/25 ,  G01R19/252 ,  G01R23/167

摘要： An apparatus (10) for measuring loop impedance comprises a differential amplifier (1) suitable for conditioning a Vgen input signal, a controlled current generator (5) capable of making an Igen current signal flow between two measuring terminals A, B, and a microcontroller (6) set up for acquisition of the signals, for processing the signals and for controlling the current generator (5). The microcontroller (6) comprises a frequency selector (2), suitable for analysis of the Vgen signal for identifying frequencies which are free of network interference in such a way as to generate the Igen current signal at a frequency identified, a digital filter (3) suitable for extracting the component of Vgen derived from application of the Igen current signal, and processing means (4) suitable for supplying the impedance measurement.