Patent ID: 8326564
Filing Date: 2012-12-04
Classification: G01R,G05B,G06K

Abstract:
1. A detected data processing apparatus comprising: a selecting unit that calculates mutual correlation between a plurality of groups of detected data acquired from a detecting unit that detects an operational state of a circuit board, and then selects as analysis data the detected data of a group whose value indicating correlation with other groups is smaller than a threshold value set up in advance; a first calculating unit that calculates a first Mahalanobis distance on a basis of a first Mahalanobis space generated by using the analysis data selected by the selecting unit from the detected data obtained when a normal circuit board is operated and on a basis of the detected data obtained when a circuit board of diagnosis target is operated, wherein the detecting unit detects operational states of a plurality of detection positions in the circuit board, the selecting unit selects the analysis data for the detected data corresponding to each of the plurality of detection positions, and the first calculating unit calculates the first Mahalanobis distance for each of the plurality of detection positions on the basis of a first Mahalanobis space generated by using the analysis data selected by the selecting unit from the detected data of the detection position obtained when a normal circuit board is operated and on the basis of the detected data of the detection position obtained when the circuit board of diagnosis target is operated; and a second calculating unit that calculates a Mahalanobis distance for each of the plurality of detection positions of a normal circuit board on the basis of the detected data corresponding to each of the plurality of detection positions obtained when the normal circuit board is operated and on the basis of the first Mahalanobis space generated for the detection position, and then calculating a second Mahalanobis distance for the circuit board of diagnosis target on a basis of a second Mahalanobis space generated from the calculated Mahalanobis distance and on the basis of the first Mahalanobis distance calculated for each of the plurality of detection positions.