G - Physics – 01 – R
Patent
G - Physics
01
R
G01R 31/36 (2006.01) G01R 19/00 (2006.01) G06K 19/07 (2006.01)
Patent
CA 2510501
The invention relates to a device for determining the energy level of an energy store (7) of a data carrier, in which a stabilized direct voltage feeding the data carrier is discharged from an unstabilized direct voltage that is available at the energy store by means of a voltage stabilizer. An evaluation circuit (15, 16, 21) comprising a secondary capacitor (13), a circuit for measuring the charging times of the secondary capacitor, and an evaluation circuit is connected to the energy store. A variable describing the energy level of the energy store is supplied at the output (19) of the evaluation circuit.
L'invention concerne un dispositif permettant de déterminer le niveau d'énergie d'un accumulateur d'énergie (7) d'un support de données, dans lequel une tension continue stabilisée pour l'alimentation du support de données est dérivée d'une tension continue non stabilisée disponible au niveau de l'accumulateur d'énergie au moyen d'un stabilisateur de tension. Selon ladite invention, un circuit d'évaluation (15, 16, 21) raccordé à l'accumulateur d'énergie comprend un condensateur auxiliaire (13), un circuit de mesure destiné à mesurer les temps de charge du condensateur auxiliaire et un circuit d'évaluation, à la sortie (19) duquel une grandeur décrivant le niveau d'énergie de l'accumulateur d'énergie est fournie.
Aktiengesellschaft Siemens
Fetherstonhaugh & Co.
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