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US 12,603,209 B2Granted
Magnetic field generator and motion capture system using the same
AssigneeTDK Corporation
InventorMakoto Kameno
Life of this patent
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Abstract
Disclosed herein is a magnetic field generator that includes a solenoid coil, a soft magnetic body disposed in an inner diameter area of the solenoid coil, and a signal generating part configured to supply an AC signal to the solenoid coil. Since the soft magnetic body is disposed in the inner diameter area of the solenoid coil, the reach of a magnetic field can be significantly expanded as compared with when an air-core coil is used.
Claims17
A magnetic field generator comprising:
- a solenoid coil;
- a soft magnetic body disposed in an inner diameter area of the solenoid coil;
- and
- a signal generating part configured to supply an AC signal to the solenoid coil,
- wherein the soft magnetic body has a cylindrical shape disposed along an inner peripheral wall of the solenoid coil such that a hollow surrounded by the soft magnetic body is formed.
2 more elements
A motion capture system comprising:
- at least one magnetic field generator including:
- a solenoid coil;
- a soft magnetic body disposed in an inner diameter area of the solenoid coil;
- and
- a signal generating part configured to supply an AC signal to the solenoid coil;
- and
- a plurality of magnetic sensors configured to detect a magnetic field generated by the solenoid coil,
- wherein the soft magnetic body has a cylindrical shape disposed along an inner peripheral wall of the solenoid coil such that a hollow surrounded by the soft magnetic body is formed, and
- wherein the plurality of magnetic sensors are disposed in mutually different spatial positions.
6 more elements
A motion capture system comprising:
- a plurality of magnetic field generators each including a solenoid coil, a soft magnetic body disposed in an inner diameter area of the solenoid coil, and a signal generating part configured to supply an AC signal to the solenoid coil;
- and
- a plurality of magnetic sensors configured to detect a magnetic field generated by the solenoid coil included in each of the plurality of magnetic field generators,
- wherein the plurality of magnetic field generators include first and second magnetic field generators,
- wherein the signal generating part included in the first magnetic field generator is configured to supply the AC signal having a first frequency, and
- wherein the signal generating part included in the second magnetic field generator is configured to supply the AC signal having a second frequency different from the first frequency.
3 more elements
Dependencies are inferred from the claim text.