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Coin sensor

A technology of coins and funnels, which is applied in the direction of coin counting, coin inspection, handling coins or valuable banknotes, etc., and can solve problems such as coin counting errors

Inactive Publication Date: 2007-07-18
ASAHI SEIKO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conversely, due to the presence of two coin signals, the two coin signals are counted twice, also producing a coin count error

Method used

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  • Coin sensor
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Experimental program
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Effect test

Embodiment Construction

[0033] FIG. 1 is a detection circuit diagram of the coin sensor of this embodiment. Fig. 2 is a perspective view of a sensor unit of the coin sensor of the present embodiment. Fig. 3 is a schematic diagram of a coin and a magnetic core related to this embodiment. FIG. 4 is a schematic diagram illustrating the work of FIG. 1 .

[0034] First, the sensor unit 9 will be explained. The magnetic core 1A is made of ferromagnetic material and is rectangular as shown in the figure. The edge surface 2A of the magnetic core 1A is rectangular, and the major axis 3 of the rectangle intersects the traveling direction D of the coin C perpendicularly.

[0035] A copper wire is wound in the magnetic core 1A, and forms a coil 4A. The wound rectangular coil 4A can be attached around the magnetic core 1A and bonded thereto, however, when the coil 4A wound in the magnetic core 1A approaches the magnetic core 1A, the effectiveness of the magnetic flux increases.

[0036] The retaining wall 5A...

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PUM

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Abstract

To prevent the counting mistakes of bimetal coins in a coin sensor for detecting the presence of coins advancing a coin passage without any contact. The coin sensor comprises a transmission coil, a reception coil arranged near the transmission coil, a detection circuit connected to the reception coil, a comparison circuit connected to the detection circuit, and a switching circuit for turning on or off based on the output of the comparison circuit. A high-pass filter is connected in parallel with the comparison circuit.

Description

technical field [0001] The present invention relates to a coin hopper in which a coin sensor detects coins moving along a coin path. In particular, the coin sensor in the coin hopper of the present invention detects bimetallic coins without physical contact. "Coin" as used in this specification includes coin-like metal medals or token chips. Background technique [0002] The coin hopper dispenses coins one by one in a known manner. As shown in FIG. 5 , the coin hopper 101 dispenses the coins 105 stored in the coin box 104 from the outlet 106 one by one through the rotating disc 103 rotating on the base 102 . [0003] Coins 105 are dispensed from an outlet 106 and pass an adjacent coin sensor 107 after which they are dispensed from a dispense chute 108 . The coin sensor 107 generally uses a proximity sensor; for example, Japanese Laid-Open Patent Specification No. 2001-313556. The prior art includes a transmitting coil connected to a high frequency transmitting circuit an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V3/10G07D5/00A63F5/04G07D1/00H03K17/95
CPCG07D9/008
Inventor 大友博
Owner ASAHI SEIKO CO LTD