METAL DETECTION ANTENNA AND COIN PROCESSOR

To provide a metal detection antenna and a coin processor making it possible to upgrade the precision in detecting a metal.SOLUTION: A metal detection antenna 5 includes a substrate 51, and plural air-core coils 52 showing a wiring pattern formed on the substrate 51. The air-core coils 52 include ou...

Full description

Saved in:
Bibliographic Details
Main Author NAGASHIMA RYUICHI
Format Patent
LanguageEnglish
Japanese
Published 28.03.2024
Subjects
Online AccessGet full text

Cover

Loading…
More Information
Summary:To provide a metal detection antenna and a coin processor making it possible to upgrade the precision in detecting a metal.SOLUTION: A metal detection antenna 5 includes a substrate 51, and plural air-core coils 52 showing a wiring pattern formed on the substrate 51. The air-core coils 52 include outer coils 52a and inner coils 52b disposed inside the outer coils 52a. The outer coils 52a and inner coils 52b generate a magnetic field. A magnetic flux in the magnetic field generated by the outer coils 52a is smaller than a magnetic flux in the magnetic field generated by the inner coils 52b, so that a difference decreases between a variation in the magnetic flux when a metal in the magnetic field generated by the outer coils 52a is detected and a variation in the magnetic flux when the metal in the magnetic field generated by the inner coils 52b is detected.SELECTED DRAWING: Figure 4 【課題】金属の検知精度を向上させることが可能な金属検知用アンテナおよび硬貨処理装置を提供する。【解決手段】この金属検知用アンテナ5は、基板51と、基板51に形成された配線パターンからなる複数の空芯コイル52と、を備え、複数の空芯コイル52は、外周コイル52aと、外周コイル52aの内側に配置される内周コイル52bとを含み、外周コイル52aと内周コイル52bとは、磁界を発生させるとともに、外周コイル52aが発生させる磁界における金属を検知したときの磁束の変化量と、内周コイル52bが発生させる磁界における金属を検知したときの磁束の変化量との差が小さくなるように、外周コイル52aにより発生する磁界における磁束は、内周コイル52bにより発生する磁界における磁束よりも大きい。【選択図】図4
Bibliography:Application Number: JP20220147324