| 摘要 |
PROBLEM TO BE SOLVED: To provide a metal detection system, a metal detection device and a metal detection method, for improving measurement accuracy for metal detection by increasing a magnetic changing rate caused by existence of a metal. SOLUTION: The metal detection system 10 for detecting a metal includes a detection coil 11 arranged in a detection area, a capacitor 12 connected in series to the detection coil 11, and an ammeter 15 or a lock-in amplifier 16 for detecting a metal based on a magnitude change or a phase angle change in an impedance or a current of the detection coil 11 and the capacitor 12 with respect to a state where a current is made to flow into the detection coil 11 and the capacitor 12 with a frequency for resonating in series the detection coil 11 and the capacitor 12. COPYRIGHT: (C)2011,JPO&INPIT |
