Patent ID: 7653456
Filing Date: 2010-01-26
Classification: H04Q

Abstract:
1. A monitoring method of monitoring plural apparatuses each having a sensor, comprising: selecting two or more sample apparatuses out of the plural apparatuses; calculating averages and standard deviations of sensor values detected by the sample apparatuses for each sample apparatus; calculating a confidence interval of the averages and an average of the standard deviations; and calculating an average of sensor values detected by an arbitrary apparatus among the plural apparatuses as an object average and calculating a normal range of the sensor of the arbitrary apparatus from the object average, the confidence interval, and the average of the standard deviations, wherein when the object average is included in the confidence interval, a normal range of the sensor is calculated from the object average and the average of the standard deviations and when the object average is not included in the confidence interval, a normal range of the sensor is calculated from a value within the confidence interval closest to the object average and the average of the standard deviations.