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:
May. 31, 2022
Filed:
Mar. 15, 2016
Mitsubishi Electric Corporation, Chiyoda-ku, JP;
Jin Inoue, Chiyoda-ku, JP;
Akihide Shiratsuki, Chiyoda-ku, JP;
Keita Mochizuki, Chiyoda-ku, JP;
Masahiro Ishikawa, Chiyoda-ku, JP;
MITSUBISHI ELECTRIC CORPORATION, Chiyoda-ku, JP;
Abstract
Provided is an apparatus configured to detect a car position by performing threshold processing on a voltage caused by an AC magnetic response through use of an identification plate in which a slit pattern is formed and a plurality of coils, the apparatus including a circuit configuration capable of switching between a normal operation for detecting the car position based on an on/off detection operation using the plurality of coils and a self-diagnosis operation capable of verifying the on/off detection operation irrespective of the presence or absence of the identification plate with a car in a stopped state by forcedly applying a magnetic field to the coils.