| 摘要 |
PROBLEM TO BE SOLVED: To make identifiable a lightning noise mixed within a system from observing data in real time by judging observed real time data as a noise if a mutual correlation value between observing components exceeds a threshold value. SOLUTION: A mutual correlation value between observing components for every observing step is calculated by using normally observed real time data and compared with a ready set threshold value. If the calculated value exceeds a ready set threshold value, the real time data are judged to be affected by an influence of a lightning noise. And, even if a large change is observed at the real time data, an erroneous alarm is not outputted. Meanwhile, if it is judged that the correlation value does not exceeds the threshold value and the data are judged not to be affected by the influence of the noise and the real time data have a large change, the effect is warned. This process is repeated to identify the presence or absence of mixture of the noise while observing the data to prevent an erroneous operation of the system operated by the data. |
