发明名称 |
METHOD OF MANUFACTURING A COIN DETECTOR |
摘要 |
<p>An inductive coin detector for detecting the presence of coins (2) in a coin channel (1) by means of a high-frequency alternating magnetic field exhibits a flat coil (3) arranged outside the coin channel (1). A high-frequency alternating magnetic field generated by the coil (3) penetrates perpendicularly to the running direction of the coin (13) through the coin channel (1). The coil (3) is formed from at least one flat spiral conductor arrangement and is a part of the LC oscillator. Together with a measuring circuit, the oscillator circuit forms a detector circuit (4) for detecting a change in the oscillator frequency caused by the presence of the coin (2). The coil (3) and the detector circuit (4) are arranged in the immediate vicinity on a common carrier and can be enclosed in a flat housing. The coin detector can be connected via a three-wire line which comprises a feed line (7) and a signal line (9). <IMAGE></p> |
申请公布号 |
KR0165135(B1) |
申请公布日期 |
1999.03.20 |
申请号 |
KR19930009794 |
申请日期 |
1993.06.01 |
申请人 |
LANDIS & GYR BUSINESS SUPPORT AG. |
发明人 |
SEITZ, THOMAS |
分类号 |
G07D5/08;G07F1/04;H01F17/00;H01F41/02;(IPC1-7):G07D5/08 |
主分类号 |
G07D5/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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