METHOD AND DEVICE FOR DETECTING TENDENCY OF SMALL FLUCTUATION OF TIME-SERIES DATA

摘要

PURPOSE: To obtain a method and a device which detect tendency of small fluctuation which is generated at a time-series data and then achieves its detection quickly. ;CONSTITUTION: A time-series data which is read by a sensor 1 is A/D converted and is stored in an input buffer 3, a high-frequency noise is eliminated by a median filter 4, and then an additional degree of confidence is determined from an amount of relative change of data, thus obtaining a recent degree of confidence by using a degree-of-confidence connection function. A tendency of small fluctuation of a time-series data is detected by using a threshold for the degree of confidence.;COPYRIGHT: (C)1993,JPO&Japio