Patent ID: 11946986
Assignee: FUJIDENOLO CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A magnetic detector configured to detect a magnetic field formed by a magnetic moment of a magnetic body moving in a first direction among the first direction, a second direction, and a third direction, the first direction being a specific direction, and the second direction and the third direction intersecting the first direction, the magnetic detector comprising:
a first magnetic sensor configured to measure a first magnetic field component, the first magnetic field component being a component of the first direction of the magnetic field;
a second magnetic sensor disposed in close proximity to or integrated with the first magnetic sensor, and configured to measure a possible magnetic field component including at least one of a second magnetic field component or a third magnetic field component, the second magnetic field component being a component of the second direction of the magnetic field, and the third magnetic field component being a component of the third direction of the magnetic field;
a processor; and
a memory configured to store a program executed by the processor, wherein
the program stored in the memory, when executed by the processor, instructs the processor to perform processes comprising:
closest proximity detection processing of detecting a timing at which the magnetic body passes a closest proximity position, the closest proximity position being a position of the magnetic body when the magnetic body moving in the first direction is in closest proximity to the first magnetic sensor;
closest proximity position component acquisition processing of acquiring the first magnetic field component measured by the first magnetic sensor at the timing and the possible magnetic field component measured by the second magnetic sensor;
predetermined position component acquisition processing of acquiring the first magnetic field component measured by the first magnetic sensor when the magnetic body is at a predetermined position separated by a predetermined distance from the first magnetic sensor;
distance estimation processing of estimating a third direction distance based on the first magnetic field component acquired by each of the closest proximity position component acquisition processing and the predetermined position component acquisition processing, the third direction distance being a distance between the magnetic body and the first magnetic sensor in the third direction; and
magnetic moment amount estimation processing of estimating a magnitude of the magnetic moment, based on the third direction distance estimated by the distance estimation processing, and on at least one of the first magnetic field component or the possible magnetic field component acquired by the closest proximity position component acquisition processing.