Vehicle-mounted devices and determination methods

Abstract

This invention provides a vehicle-mounted device and a determination method. A new technology is provided that enables position detection without using GNSS or ground components. The vehicle-mounted device (1) includes: a magnetic sensor unit (10) having a plurality of magnetic sensor elements arranged in a predetermined positional relationship to detect a magnetic field generated by the magnetism of a magnetic body constituting a track; a detection unit (353) that detects a magnetic field distribution based on the detection values ​​of each of the magnetic sensor elements; and a determination unit (355) that determines that a predetermined set position has been achieved when the combination of similarities between the magnetic field distribution detected by the detection unit (353) and each of the plurality of reference magnetic field distributions satisfies a predetermined condition.

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