FIXTURE OPEN/CLOSED DETECTION DEVICE AND FIXTURE LOCKED/UNLOCKED DETECTION DEVICE USING SAME

摘要

The problem addressed by the present invention is to curb the erroneous detection of an open state or a closed state of a fixture. This fixture open/closed detection device (100) detects whether a fixture provided in a doorway or window of a building is open or closed, and is provided with a first magnetic field generation unit (1A) that generates a surrounding magnetic field and a first magnetism detection unit (3A) that detects magnetism. The first magnetism detection unit (3A) has a magnetism detection element (magnetism sensor (30A)) that detects magnetism in a magnetism detection direction, which is a prescribed direction, and the first magnetism detection unit is disposed such that the magnetism detection direction intersects the open/close direction of a fixture. The first magnetic field generation unit (1A) has at least one permanent magnet (10A1, 10A2), and is configured such that the magnetic field in the direction that intersects with the open/close direction of the fixture and is parallel to the magnetism detection direction will be stronger relative to the magnetic field in the direction parallel to the open/close direction of the fixture.