Method of using flash memory for storing metering data

G - Physics – 08 – C

Patent

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G08C 25/00 (2006.01) G11C 16/10 (2006.01)

Patent

CA 2483415

A metering data preservation and storage methodology, including steps for protecting data during periods in which power is lost to the meter, is provided. In particular, a methodology for using nonvolatile flash memory structures is used in association with various volatile memory structures for the storage and preservation of metering data acquired from a solid-state utility meter. The methodology includes the use of the volatile memory structures for the temporary storage (146) and alteration (148) of the measured and calculated metering data so as to avoid an effective reduction in the lifespan of the non-volatile memory structure which can only be written, erased and rewritten to a finite number of times. Further, such usage reduces costs associated with the maintenance and incorporation of such memory types in the meter. The methodology further includes the use of the non-volatile flash memory (126) as a permanent storage medium for the acquired metering data during power loss (124) to the meter.

L'invention concerne un procédé de conservation et de stockage de données de mesure comprenant les étapes de protection de données dans les périodes pendant lesquelles la puissance est perdue pour l'appareil de mesure. On utilise notamment un procédé d'utilisation de structures de mémoire flash non volatile en association avec différentes structures de mémoire volatile pour le stockage et la conservation de données de mesure obtenues à partir d'un appareil de mesure utilitaire à l'état solide. Ce procédé comporte l'utilisation de structures de mémoire volatile pour le stockage temporaire (146) et la modification (148) des données mesurées et de mesure calculées pour éviter une réduction effective de la durée de vie de la structure de mémoire non volatile qui peut être écrite, effacée et réécrite seulement un nombre de fois limité. En outre, un tel usage réduit les coûts associés à la maintenance et à l'intégration de tels types de mémoire dans l'appareil de mesure. Enfin, ce procédé utilise la mémoire flash non volatile (126) comme un moyen de stockage permanent de l'appareil de mesure pour les données de mesure détectées pendant la perte de puissance (124).

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