Near magnetic field probe and near magnetic field probe unit and near magnetic field probe array and magnetic field instrumentation system

摘要

PROBLEM TO BE SOLVED: To reduce the error of measurement by increasing the positioning precision of a near-by magnetic field probe by a simple structure, which approaches an object substance of measurement, performs near-by magnetic field detection necessary on the occasion of specifying a current to be a noise source, and detects the current. ;SOLUTION: A near-by magnetic field probe 1 having loop coils 2 constituted with planes as a detecting element, is characterized by that the above-mentioned loop coils 2 (conductors 5 constituting them) are laminated approximately at the same position with insulators 6 between. Since the loop coils 2 constituting the near-by magnetic field probe 1 are laminated approximately at the same position with the insulators 6 between. In this way, it becomes possible to perform positioning by comparing the outputs of a plurality of coils laminated, on the occasion of approaching the near-by magnetic field probe 1 to an object substance of measurement (distributing wires 8b, etc., of a printed wiring board 8), and high-precision measurement becomes feasible.;COPYRIGHT: (C)1999,JPO