TIME-SERIES DATA ACCUMULATION DEVICE

摘要

A storage unit of a time-series data accumulation device of an embodiment stores statistical value data. A determination unit determines an interval function on the basis of data capacity, and a total amount of time elapsed from the beginning of measurement of a time-series data. A first calculation unit calculates an interval indicating an amount of time required to measure all the time-series data items constituting desired statistical value data on the basis of the determined interval function. A second calculation unit acquires all the time-series data items on the basis of the calculated interval, and thereafter calculates the statistical value on the basis of all the acquired time-series data items. A write unit writes the calculated statistical value to the storage unit as the statistical value data.

主权项

1. A time-series data accumulation device comprising:
a storage unit which stores therein statistical value data indicating a statistical value of time-series data indicating data varying with time; a determination unit which determines an interval function on the basis of data capacity indicating a data amount which can be written to the storage unit, and a total amount of time elapsed from the beginning of measurement of the time-series data carried out by an external device configured to measure the time-series data; a first calculation unit which calculates an interval indicating an amount of time required by the external device to measure all the time-series data items constituting desired statistical value data on the basis of the determined interval function; a second calculation unit which acquires all the time-series data items constituting the desired statistical value data from the external device on the basis of the calculated interval, and thereafter calculates the statistical value on the basis of all the acquired time-series data items; and a write unit which writes the calculated statistical value to the storage unit as the statistical value data.