DEVICE FOR MAGNETIC NEAR-FIELD MEASUREMENT, METHOD FOR CURRENT PATTERN SPECIFICATION, AND PROGRAM FOR CURRENT PATTERN SPECIFICATION

摘要

PROBLEM TO BE SOLVED: To provide a device for magnetic near-field measurement for specifying a noise current which is a generation source of an unnecessary electromagnetic wave radiated from an electronic apparatus.;SOLUTION: A means for synthesizing magnetic field distribution chart extracts a part where a maximal value of magnetic field intensity exists, based on an intensity distribution of horizontal components and vertical components of a near magnetic field of an inputted measuring object, and generates a synthesized distribution chart. An array code extraction means scans the synthesized distribution chart in the longitudinal direction and in the lateral direction, and extracts an array code showing a state where a domain on which the maximal value of the intensity of horizontal components and vertical components of the magnetic field exists is arrayed. An operation means compares the intensity of each magnetic field of the plurality of vertical components which are elements of the array code with respect to a specific array code, and adds the comparison results to the array code, to thereby generate an array code for retrieval. A retrieval means retrieves a storage device 21 based on the array code for retrieval, and specifies a current pattern in the synthesized distribution chart.;COPYRIGHT: (C)2011,JPO&INPIT