| 摘要 |
The present invention provides a metal object identification apparatus capable of identifying a metal object even when there is scattering in the thickness of a metal surface film. A metal object identification apparatus 10 of the present invention comprises an oscillation circuit 20 comprising a coil 21; an extraction portion 30 which, when a metal object to be identified moves relative to the coil 21, extracts the output from the oscillation circuit 20 as at least two parameters; a correlation storage portion 40 which stores in advance a correlation between parameters for metal objects; and, a metal object identification portion 50 which identifies the metal object by judging whether the parameters extracted by the extraction portion 30 are applicable to the correlation stored in the correlation storage portion 40.
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