The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 23, 2026
Filed:
Sep. 24, 2021
Mitsubishi Electric Corporation, Tokyo, JP;
Jin Inoue, Tokyo, JP;
Yoshimasa Watanabe, Tokyo, JP;
Yasuyuki Okada, Tokyo, JP;
Akira Hotta, Tokyo, JP;
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Abstract
An alignment direction detection device includes an excitation coil to apply an AC magnetic field to a test object; one or more magnetic field sensors, each of which detects an inductive magnetic field caused by the AC magnetic field; a conveyance device; and processing circuitry. The processing circuitry performs band limitation on a distribution of the voltage outputted from each magnetic field sensor included in the one or more magnetic field sensors based on a radial direction space frequency corresponding to a size of the magnetic field sensor and a distance between the magnetic field sensor and the test object, transforms the band-limited voltage distribution into an output intensity waveform with respect to a space angle at the radial direction space frequency, and calculates a peak angle that is a peak position of the waveform as an alignment angle representing the alignment direction.