PROCÉDÉ ET APPAREIL DE MESURE DE LA CONSOMMATION D'ÉNERGIE D'UN SYSTÈME SUR PUCE NUMÉRIQUE PERMETTANT DE PRÉDIRE LA DURÉE DE VIE DE BATTERIES

摘要

The invention discloses a method for metering power consumption of a digital system-on-chip (SoC) for predicting battery life of a battery used by the SoC. The object to find a possibility to observe and meter the battery life of small, low-cost SoC, especially of IoT systems, which is cheap and compact and space-saving, and which can avoid the need for external components, will be solved by the method comprising the following steps: Partitioning of all digital circuitry of the SoC into voltage and/or clock domains; Metering a power consumption of every domain by counting a charge pulse of each domain every time a gate of said domain has been switched; Accumulating said counted charge pulses of each domain by an accumulator; Calculating an overall sum R of all charges drained from the battery by said domains of the SoC; Post-processing said overall sum R for predicting battery life by an integrated micro-processor; and signaling an imminent battery loss; and an apparatus for performing the method of metering power consumption of a SoC