Method and circuit for detecting an electric arc in a circuit, and switching device using such a circuit - Archive ouverte HAL Accéder directement au contenu
Brevet Année : 2019

Method and circuit for detecting an electric arc in a circuit, and switching device using such a circuit

Jonathan Andrea
  • Fonction : Auteur
  • PersonId : 778429
  • IdRef : 154481858
Patrick Schweitzer
Serge Weber
Etienne Tisserand
Marc Bournat
  • Fonction : Auteur

Résumé

A method and a circuit for detecting an electric arc in an electric circuit supplied with AC current during a supply period includes measuring at least one input signal (S) among a current (I) and an input voltage (U) of the electric circuit, supplying a warning signal (A1) to indicate that an electric arc occurs when the input signal (S) is constant over at least one portion of the supply period, digitally sampling the input signal (S) during the measurement thereof according to predetermined levels and, to identify that the input signal (S) is constant, determining the frequency at which each level is reached by the input signal (S) over a predetermined time window, comparing the frequency of each level with a predetermined warning threshold, and issuing the warning signal if the frequency of at least one of the levels is higher than the warning threshold.
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Dates et versions

hal-03938786 , version 1 (13-01-2023)

Identifiants

  • HAL Id : hal-03938786 , version 1

Citer

Jonathan Andrea, Patrick Schweitzer, Serge Weber, Etienne Tisserand, Marc Bournat. Method and circuit for detecting an electric arc in a circuit, and switching device using such a circuit. United States, Patent n° : 10211618. 2019. ⟨hal-03938786⟩
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