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JP2004333284A - Coin sensor - Google Patents

Coin sensor Download PDF

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Publication number
JP2004333284A
JP2004333284A JP2003129322A JP2003129322A JP2004333284A JP 2004333284 A JP2004333284 A JP 2004333284A JP 2003129322 A JP2003129322 A JP 2003129322A JP 2003129322 A JP2003129322 A JP 2003129322A JP 2004333284 A JP2004333284 A JP 2004333284A
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JP
Japan
Prior art keywords
coin
range
coins
sensor
coil
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JP2003129322A
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Japanese (ja)
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JP4211974B2 (en
Inventor
Toshihiro Kawasaki
敏寛 川▲崎▼
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Minerva KK
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Minerva KK
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Priority to JP2003129322A priority Critical patent/JP4211974B2/en
Publication of JP2004333284A publication Critical patent/JP2004333284A/en
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  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Testing Of Coins (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coin sensor capable of accurately identify the denomination of a coin, even if the installation range of a detection coil is narrow, with respect to a coin passage range. <P>SOLUTION: A coin sensor 3 is constituted so that a primary coil 12 and a secondary coil 13 are arranged to be separated from and facing a coin 2, which passes through a coin passage range 1 so as to be opposed to each other, in a spaced-part state and identifies the coin 2 passing through the coin passage range 1. The primary and secondary coils 12 and 13 are arranged to at substantially the center of the coin passage range 1 along the feed direction of the coin 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、コインセンサに関する。
【0002】
【従来の技術】
硬貨(以下「コイン」という)の金種を識別(選別)するコインセンサとして図7び図8に示すようにコイン通路範囲1を水平に搬送されてくるコイン2の上下に離隔対向して配置されているタイプのものがある。コインセンサ3は、1次コイル4と2次コイル5、5から成り、1次コイル4のコア6は、コイン通路範囲1を搬送される最大径のコインの外径全体を十分にカバー可能な幅広の薄板をなし、コイン通路範囲1の下方位置に搬送方向に対して直角に横切るように幅方向に沿って配置されている。
【0003】
2次コイル5、5のコア7、7は、幅狭の薄板をなし、コア6の幅方向に沿い且つコイン通路範囲1の中心Lに対して左右対称に間隔を存して並設されている。1次コイル4は、高周波電流で励磁され、2次コイル5、5の出力信号は加算されて識別信号とされる。コインセンサ3は、搬送されてくるコイン2の両面が対向する1次コイル4と2次コイル5、5との間を通過するときに2次コイル5、5の出力が変化し、この出力変化を検出してコイン2の金種を識別する。2つの2次コイル5、5の出力信号の和を取ることで、コイン2がコイン通路範囲1を横方向にずれて搬送されてきた場合でも識別可能としている(例えば、特許文献1参照。)。
【0004】
また、コインは、金種によって合金の成分が似ているものがあり、このように合金の成分が似ている場合には外径(表面積)の違いにより電気的特性が異なることで識別している。
【0005】
【特許文献1】
特開平5−281195号公報
【0006】
【発明が解決しようとする課題】
通常コインセンサ3は、図7及び図8に示すようにコイン通路範囲1の中央に位置するように設置されるが、搭載する機器によっては図9に2点鎖線で示すように他の装置8、9等がコイン通路範囲1の中央位置近傍まで入り込んで配置されているような場合、これらの装置8、9に規制されてコイン2の幅(外径)全体をカバーするように1次コイル4、2次コイル5、5を配置することができず、コイン通路範囲1の中心位置Lから幅方向(側方)に大きくずらせて設置しなければならない場合がある。このようにコインセンサ3がコイン通路範囲1の中心位置Lから幅方向に大きくずれて配置された場合、金種の識別が不可能となる。
【0007】
図10は、図9に示すようにコインセンサ3がコイン通路範囲1の中心位置Lから略半分程度側方にずれて配置された場合におけるコインの検出データの一例を示す。前述したようにコインは、金種によって合金の成分が似ているものがあり、合金の成分が似ている場合には外径(表面積)の違いにより電気的特性が異なることで選別している。そこで、合金成分が略同じで外径の異なる3種類(大、中、小)のコインA、B、Cを使用し、コインAを大径、コインBを中径、コインCを小径としたものである。このような材質が同じで外形の違う硬貨として例えば、旧500円硬貨、100円硬貨、50円硬貨がある。
【0008】
図10は、コインセンサ3の検出感度を横軸、発生頻度回数を縦軸とし、前記コインA、B、Cをコイン通路範囲1の任意の位置を通過させた場合の検出感度を示す。尚、図の棒グラフにおいてコインAを白抜き、コインBをハッチング、コインCを梨地で表している。この図10から明らかなように、各コインA、B、Cの検出感度の範囲(データ範囲)が重なってしまい、識別不可能となる。
【0009】
本発明は、上述の点に鑑みてなされたもので、コイン通路範囲に対し検出コイルの設置可能範囲が狭い場合でも正確に金種の識別が可能なコインセンサを提供することを目的とする。
【0010】
【課題を解決するための手段】
上記目的を達成するために請求項1の発明は、コイン通路範囲を通過するコインと離隔対向し、且つ互いに対向するように1次コイルと2次コイルとを配置し、前記通過するコインを識別するコインセンサであって、前記1次コイルと2次コイルとを前記コイン通路範囲の略中央に前記コインの搬送方向に沿って配置したことを特徴とする。
【0011】
コインセンサは、1次コイルと2次コイルとの間のコイン通路範囲を通過するときに当該コインの金種を識別する。コインセンサは、コイン通路範囲の中央位置にコインの搬送方向に沿って配置することで、設置可能な範囲が狭い場合でも配置可能となる。
請求項2の発明は、前記コインセンサは、複数の1次コイルと複数の2次コイルとを有し、前記複数の1次コイル及び2次コイルは、前記コイン通路範囲の中央から幅方向に対称位置に所定の間隔を存して平行に配置されていることを特徴とする。
【0012】
コインセンサの1次コイル、2次コイルを夫々搬送通路に幅方向に所定の間隔を存して複数並設することで、コインがコイン通路範囲を幅方向にずれて通過する場合でも正確に金種を識別することが可能となる。
【0013】
【発明の実施の形態】
以下、本発明の実施形態を図面により詳細に説明する。
図1は、本発明係るコインセンサの第1の実施形態を示す斜視図、図2は、図1の正面図である。図1及び図2に示すようにコインセンサ11は、1次コイル12と2次コイル13から成り、これらの1次コイル12と2次コイル13は、コイン通路範囲1を挟んで上下に所定の間隔を存して離隔対向して配置されている。1次コイル12のコア14、2次コイル13のコア15は、コイン通路範囲1の中央位置Lにコイン2の搬送方向に沿って配置されている。1次コイル12のコア14は、コイン搬送方向に沿う幅(長さ)Wがコイン通路範囲1を水平に搬送されてくるコイン2の外径全体を十分にカバー可能な幅広の薄板とされており、2次コイル13のコア15は、コイン搬送方向に沿う幅(長さ)Wがコア14のコインの搬送方向に沿う幅Wよりも幅狭(数分の一例えば、1/4〜1/5程度)の薄板とされている。尚、コイン通路範囲1にコインを搬送する方法として、搬送ベルト上にコインを載せて搬送する方法、或いはコインを上から搬送ベルトで通路に押し付けて滑動させて搬送する方法等がある。
【0014】
コインセンサ11の1次コイル12、2次コイル13をコイン通路範囲1の中央位置Lの下方にコイン2の搬送方向に沿って配置することで、図2に2点鎖線で示すように他の装置8、9等がコイン通路範囲1の中央位置L近傍まで入り込んで配置されているような場合でも設置可能である。また、2次コイル13のコア15のコイン搬送方向に沿う幅Wを1次コイルのコア14のコイン搬送方向に沿う幅Wに比べて幅狭とすることで、コインが連続して搬送された場合でも識別可能としている。
【0015】
図5に示すように1次コイル12は、高周波発振回路(正弦波)31に接続され、2次コイル13は、増幅回路32に接続されている。増幅回路32で増幅された検出信号は、整流回路33により整流されて出力され、不図示の判別回路に入力される。この判別回路は、入力信号のレベルにより金種を判別する。
図11は、前述した3種類のコインA、B、Cを使用し、図1及び図2に示すコイン通路範囲1の或る特定位置を通過したとき例えば、コイン通路範囲1の中央位置に載置して搬送したときの検出感度の範囲(データ範囲)の一例を示す図である。図11から明らかなように各コインA、B、C(金種)の検出範囲が重なることがなく、また、安定した結果が得られており、図9に示す従来のコインセンサ3の検出データとは顕著な差異があり、十分に識別可能である。
【0016】
図12は、図1において前述した3種類のコインA、B、Cをコイン通路範囲1のある一定通過範囲の任意の位置を通過させた場合即ち、コイン通路範囲1の任意の位置をコインが通過した場合の検出感度の一例を示し、一部でコインBとCとの検出感度の範囲(データ範囲)が重なっている。この場合、コインBとCとの金種の判別ができなくなる。しかしながら、コインを使用する機器は、全てのコインが使用し得るものではなく、使用し得ない、又は使用しない硬貨もある。例えば、通常自動販売機等においては5円硬貨や1円硬貨は使用し得ないコインである。従って、コインセンサは、全ての硬貨に対して判別可能であることを必要とするものではない。従って、使用するコインの金種が限られているもの、例えば、図12においてコインB又はCを使用しないものにおいては図1に示すコインセンサ11を使用することができる。
【0017】
このようにコインセンサ11の1次コイル12、2次コイル13をコイン通路範囲1の中央位置Lにコインの搬送方向に沿って配置することで、コイン通路範囲1に対して1次、2次コイルの設置可能な範囲が狭い場合でも配置可能となり、コインの金種を正確に識別することが可能である。
図1において、2次コイル13のコア15のコイン搬送方向に沿う幅Wを1次コイル12のコア14のコイン搬送方向に沿う幅Wに比べて幅狭(数分の一)とすることにより、コインが続けて搬送された場合でも個々に識別することが可能となり、コインの選別処理の高速化を図ることが可能である。
【0018】
図3は、本発明のコインセンサの第2実施形態を示す斜視図、図4は、図3の正面図である。図3及び図4においてコインセンサ21は、コイン通路範囲1の幅方向に1次コイル、2次コイルを夫々複数例えば、2つ並設した構成したもので、2つの1次コイル22、22と、2つの2次コイル23、23から成り、1次コイル22、22のコア24、24、及び2次コイル23、23のコア25、25は、夫々コイン通路範囲1の中央位置Lから左右(幅方向)対称に所定の間隔例えば、数ミリ程度の幅狭い間隔を存して、且つコイン通路範囲1の搬送方向に沿って平行に配置されている。この場合も図4に2点鎖線で示すように他の装置8、9等がコイン通路範囲1の中央位置L近傍まで入り込んで配置されているような場合でも設置可能である。
【0019】
1次コイル22のコア24は、コイン搬送方向に沿う幅(長さ)Wがコイン通路範囲1を水平に搬送されてくるコイン2の外径全体を十分にカバー可能な幅広の薄板とされており、2次コイル23のコア25は、コイン搬送方向に沿う幅(長さ)Wがコア24のコイン搬送方向に沿う幅Wよりも幅狭(数分の一例えば、1/4〜1/5程度)の薄板とされている。
【0020】
図6に示すように1次コイル22、22は、直列に接続されて高周波発振回路31に接続され、2次コイル23、23の出力信号は、夫々増幅器32、32で増幅された後整流回路33、33で整流され、各整流された出力信号1、2が加算されて判別回路に入力されるように構成されている。
図13は、上記構成のコインセンサ21において前述した3種類のコインA、B、Cを使用し、コイン通路範囲1の任意の位置を通過させたときの検出感度範囲(データ範囲)の一例を示す。図13から明らかなように金種毎の検出感度範囲(データ範囲)は広がるが、重なる範囲は無く、3種類のコインA、B、C全てを確実に識別することが可能である。
【0021】
尚、図3において2次コイル23のコア25のコイン搬送方向に沿う幅Wを1次コイル22のコア24のコイン搬送方向に沿う幅Wに比べて幅狭とすることにより、コインが続けて搬送された場合でも個々に識別することが可能となり、コインの選別処理の高速化を図ることが可能となる。
また、上記第2実施形態においてコイン通路範囲1の幅方向に1次コイルと2次コイルとを夫々2つ並設した場合について記述したが、これに限るものではなく、1次コイルと2次コイルとを夫々2つ以上コイン通路範囲1の幅方向に所定の間隔を存して並設してもよい。これにより、コインがコイン通路範囲を幅方向にずれて通過する場合でも更に正確に金種を識別することが可能となる。
【0022】
【発明の効果】
以上説明したように、請求項1の本発明によれば、コインセンサの1次コイル、2次コイルをコイン通路範囲の略中央にコインの搬送方向に沿って配置することで、前記コイン通路範囲に対してコイルの設置可能な範囲が狭い場合でも設置することが可能となり、且つ金種を正確に識別することが可能でとなる。これにより、コインセンサを搭載可能な機器の拡大が図られる。
【0023】
請求項2の発明によれば、コインセンサの1次コイル、2次コイルを夫々搬送通路に幅方向に複数並設することで、コインがコイン通路範囲を幅方向にずれて通過する場合でも正確に検出することが可能となる。
【図面の簡単な説明】
【図1】本発明に係るコインセンサの第1実施形態を示す斜視図である。
【図2】図1に示すコインセンサの正面図である。
【図3】本発明に係るコインセンサの第2実施形態を示す斜視図である。
【図4】図3に示すコインセンサの正面図である。
【図5】図1に示すコインセンサの回路構成の一例を示すブロック図である。
【図6】図3に示すコインセンサの回路構成の一例を示すブロック図である。
【図7】従来のコインセンサの斜視図である。
【図8】図7に示すコインセンサの正面図である。
【図9】図8に示すコインセンサがコイン通路範囲から側方にずれて配置されている場合を示す図である。
【図10】図8に示すコインセンサの検出感度の一例を示す図である。
【図11】図1に示すコインセンサの検出感度の一例を示す図である。
【図12】図1に示すコインセンサの検出感度の他の例を示す図である。
【図13】図3に示すコインセンサの検出感度の一例を示す図である。
【符号の説明】
1 コイン通路範囲
2、A、B、C コイン
11、21 コインセンサ
12、22 1次コイル
13、23 2次コイル
14、24 コア(1次コイルのコア)
15、25 コア(2次コイルのコア)
31 発振回路
32 増幅回路
33 整流回路
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a coin sensor.
[0002]
[Prior art]
As a coin sensor for identifying (selecting) a denomination of a coin (hereinafter referred to as a "coin"), the coin sensor is disposed in a coin passage range 1 as shown in FIGS. There are types that are. The coin sensor 3 includes a primary coil 4 and secondary coils 5 and 5, and the core 6 of the primary coil 4 can sufficiently cover the entire outer diameter of the coin having the largest diameter conveyed in the coin passage area 1. It is formed of a wide thin plate, and is disposed along the width direction at a position below the coin passage area 1 so as to cross at right angles to the transport direction.
[0003]
The cores 7, 7 of the secondary coils 5, 5 are formed in a narrow thin plate, and are arranged along the width direction of the core 6 and symmetrically with respect to the center L of the coin passage range 1 with a space left and right. I have. The primary coil 4 is excited by a high-frequency current, and the output signals of the secondary coils 5 and 5 are added and used as an identification signal. The coin sensor 3 changes the output of the secondary coils 5 and 5 when both sides of the conveyed coin 2 pass between the opposed primary coil 4 and the secondary coils 5 and 5. Is detected and the denomination of the coin 2 is identified. By taking the sum of the output signals of the two secondary coils 5 and 5, it is possible to identify even if the coin 2 is conveyed while being shifted laterally in the coin passage range 1 (for example, see Patent Document 1). .
[0004]
Some coins have similar alloy components depending on the denomination. If the alloy components are similar, the coins are identified by different electrical characteristics due to differences in outer diameter (surface area). I have.
[0005]
[Patent Document 1]
JP-A-5-281195
[Problems to be solved by the invention]
Normally, the coin sensor 3 is installed so as to be located at the center of the coin passage area 1 as shown in FIGS. 7 and 8, but depending on the equipment to be mounted, as shown by a two-dot chain line in FIG. , 9, etc., are disposed so as to enter the vicinity of the center of the coin passage area 1, the primary coil is controlled by these devices 8, 9 so as to cover the entire width (outer diameter) of the coin 2. 4. In some cases, the secondary coils 5 and 5 cannot be arranged, and the coins must be installed so as to be largely displaced from the center position L of the coin passage area 1 in the width direction (side). When the coin sensor 3 is disposed so as to be largely shifted in the width direction from the center position L of the coin passage range 1, it is impossible to identify the denomination.
[0007]
FIG. 10 shows an example of coin detection data in a case where the coin sensor 3 is arranged so as to be shifted from the center position L of the coin passage range 1 by about half the side as shown in FIG. As described above, some coins have similar alloy components depending on the denomination, and when the alloy components are similar, the coins are sorted out because the electrical characteristics are different due to the difference in outer diameter (surface area). . Therefore, three types of coins A, B, and C (large, medium, and small) having substantially the same alloy components and different outer diameters were used, and the coin A was set to a large diameter, the coin B was set to a medium diameter, and the coin C was set to a small diameter. Things. As coins having the same material but different shapes, there are, for example, old 500 yen coin, 100 yen coin, and 50 yen coin.
[0008]
FIG. 10 shows the detection sensitivity when the coins A, B, and C pass through any position in the coin passage range 1 with the detection sensitivity of the coin sensor 3 as the horizontal axis and the frequency of occurrence as the vertical axis. In the bar graph of the figure, coin A is outlined, coin B is hatched, and coin C is matte. As is apparent from FIG. 10, the detection sensitivity ranges (data ranges) of the coins A, B, and C overlap, and the coins cannot be identified.
[0009]
The present invention has been made in view of the above point, and an object of the present invention is to provide a coin sensor capable of accurately identifying a denomination even when a detection coil installation range is narrower than a coin passage range.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, a primary coil and a secondary coil are arranged so as to be spaced apart from a coin passing through a coin passage area and to face each other, and to identify the passing coin. The coin sensor is characterized in that the primary coil and the secondary coil are arranged substantially in the center of the coin passage area along the coin transport direction.
[0011]
The coin sensor identifies the denomination of the coin when passing through the coin passage area between the primary coil and the secondary coil. By arranging the coin sensor at the center position of the coin passage area along the coin transport direction, the coin sensor can be arranged even when the installable range is narrow.
According to a second aspect of the present invention, the coin sensor has a plurality of primary coils and a plurality of secondary coils, and the plurality of primary coils and the secondary coils extend in a width direction from a center of the coin passage area. It is characterized by being arranged in parallel at a predetermined interval at a symmetric position.
[0012]
By arranging a plurality of primary coils and secondary coils of the coin sensor in the transport path at predetermined intervals in the width direction, even if the coin passes the coin path range shifted in the width direction, the gold can be accurately determined. Species can be identified.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view showing a first embodiment of a coin sensor according to the present invention, and FIG. 2 is a front view of FIG. As shown in FIGS. 1 and 2, the coin sensor 11 includes a primary coil 12 and a secondary coil 13, and the primary coil 12 and the secondary coil 13 are located at predetermined positions above and below the coin passage range 1. They are spaced apart and face each other. The core 14 of the primary coil 12 and the core 15 of the secondary coil 13 are arranged at the center position L of the coin passage range 1 along the transport direction of the coin 2. The core 14 of the primary coil 12, the width (length) along the coin transporting direction W 1 is sufficiently cover possible wide thin outer径全of coins 2 being transported on the coin path range 1 horizontally The core 15 of the secondary coil 13 has a width (length) W 2 along the coin transport direction smaller than a width W 1 of the core 14 along the coin transport direction (a fraction of, for example, 1 / (About 4 to 1/5). As a method of transporting coins to the coin passage area 1, there is a method of placing coins on a transport belt and transporting them, or a method of transporting coins by pressing the coins from above onto a passage with a transport belt and sliding them.
[0014]
By arranging the primary coil 12 and the secondary coil 13 of the coin sensor 11 below the center position L of the coin passage range 1 along the transport direction of the coin 2, another primary coil 12 and a secondary coil 13 are provided as shown by a two-dot chain line in FIG. It can be installed even when the devices 8, 9 and the like are arranged so as to enter near the center position L of the coin passage range 1. In addition, by setting narrower than the width W 2 along the coin transporting direction of the core 15 of the secondary coil 13 to the width W 1 along the coin transporting direction of the core 14 of the primary coil, conveying coins are continuously Even if it is done, it can be identified.
[0015]
As shown in FIG. 5, the primary coil 12 is connected to a high-frequency oscillation circuit (sine wave) 31, and the secondary coil 13 is connected to an amplifier circuit 32. The detection signal amplified by the amplifier circuit 32 is rectified and output by the rectifier circuit 33, and is input to a discrimination circuit (not shown). This discrimination circuit discriminates the denomination based on the level of the input signal.
FIG. 11 shows a case where the above-mentioned three types of coins A, B, and C are used and when they pass through a specific position in the coin passage range 1 shown in FIGS. FIG. 5 is a diagram illustrating an example of a range of detection sensitivity (data range) when the wafer is placed and transported. As is clear from FIG. 11, the detection ranges of the coins A, B, and C (denominations) do not overlap, and stable results are obtained, and the detection data of the conventional coin sensor 3 shown in FIG. There is a significant difference from this and it is well identifiable.
[0016]
FIG. 12 shows a case where the three types of coins A, B, and C described above with reference to FIG. An example of the detection sensitivity when passing is shown, and the detection sensitivity ranges (data ranges) of the coins B and C partially overlap. In this case, the denomination of coins B and C cannot be determined. However, devices that use coins cannot be used by all coins, and some coins cannot be used or are not used. For example, in a vending machine or the like, a 5-yen coin or a 1-yen coin is a coin that cannot be used. Therefore, the coin sensor does not need to be able to discriminate all coins. Therefore, the coin sensor 11 shown in FIG. 1 can be used for coins that use only limited denominations, for example, coins B or C are not used in FIG.
[0017]
By arranging the primary coil 12 and the secondary coil 13 of the coin sensor 11 at the center position L of the coin passage area 1 in the coin transport direction in this way, the primary coil 12 and the secondary coil 13 Even if the range where the coil can be installed is narrow, the coil can be arranged, and the coin denomination can be accurately identified.
In FIG. 1, the width W 2 of the core 15 of the secondary coil 13 along the coin transport direction is narrower (a fraction of a few) than the width W 1 of the core 14 of the primary coil 12 along the coin transport direction. Thus, even if coins are continuously transported, it is possible to identify them individually, and it is possible to speed up coin selection processing.
[0018]
FIG. 3 is a perspective view showing a second embodiment of the coin sensor of the present invention, and FIG. 4 is a front view of FIG. 3 and 4, the coin sensor 21 has a configuration in which a plurality of primary coils and a plurality of secondary coils, for example, two are arranged in parallel in the width direction of the coin passage range 1. The cores 24, 24 of the primary coils 22, 22 and the cores 25, 25 of the secondary coils 23, 23 are located right and left (from the center position L of the coin passage range 1, respectively). They are arranged symmetrically at a predetermined interval, for example, a narrow interval of about several millimeters, and are arranged in parallel along the transport direction of the coin passage area 1. Also in this case, as shown by a two-dot chain line in FIG. 4, the apparatus can be installed even when other devices 8, 9, etc. are arranged so as to enter near the center position L of the coin passage range 1.
[0019]
The core 24 of the primary coil 22, the width (length) along the coin transporting direction W 1 is sufficiently cover possible wide thin outer径全of coins 2 being transported on the coin path range 1 horizontally and, the core 25 of the secondary coil 23, the width (length) along the coin transporting direction W 2 is narrower than the width W 1 along the coin transporting direction of the core 24 (fraction of example, 1/4 (About 1 /).
[0020]
As shown in FIG. 6, the primary coils 22, 22 are connected in series and connected to a high-frequency oscillation circuit 31, and the output signals of the secondary coils 23, 23 are amplified by amplifiers 32, 32, respectively, and then rectified by the rectifier circuit. The rectified output signals 1 and 2 are added at 33 and 33, and the rectified output signals 1 and 2 are added and input to the discriminating circuit.
FIG. 13 shows an example of the detection sensitivity range (data range) when the three types of coins A, B, and C described above are used in the coin sensor 21 having the above-described configuration and the coin sensor 21 is passed through an arbitrary position in the coin passage range 1. Show. As is clear from FIG. 13, although the detection sensitivity range (data range) for each denomination is widened, there is no overlapping range, and all three types of coins A, B, and C can be reliably identified.
[0021]
In FIG. 3, the width W 2 of the core 25 of the secondary coil 23 along the coin transport direction is smaller than the width W 1 of the core 24 of the primary coil 22 along the coin transport direction. Even if they are conveyed continuously, they can be individually identified, and the coin sorting process can be speeded up.
In the second embodiment, the case where two primary coils and two secondary coils are arranged in the width direction of the coin passage range 1 has been described. However, the present invention is not limited to this. Two or more coils may be provided side by side at predetermined intervals in the width direction of the coin passage area 1. This makes it possible to more accurately identify the denomination even when coins pass through the coin passage area in the width direction.
[0022]
【The invention's effect】
As described above, according to the first aspect of the present invention, the primary coil and the secondary coil of the coin sensor are arranged substantially in the center of the coin passage area along the coin conveying direction, thereby providing the coin passage area. Can be installed even when the range in which the coil can be installed is narrow, and the denomination can be accurately identified. As a result, devices capable of mounting the coin sensor can be expanded.
[0023]
According to the invention of claim 2, by arranging a plurality of primary coils and secondary coils of the coin sensor in the conveying path in the width direction, even if the coin passes through the coin path range in the width direction, it is accurate. Can be detected.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a first embodiment of a coin sensor according to the present invention.
FIG. 2 is a front view of the coin sensor shown in FIG.
FIG. 3 is a perspective view showing a second embodiment of the coin sensor according to the present invention.
FIG. 4 is a front view of the coin sensor shown in FIG. 3;
FIG. 5 is a block diagram showing an example of a circuit configuration of the coin sensor shown in FIG.
6 is a block diagram showing an example of a circuit configuration of the coin sensor shown in FIG.
FIG. 7 is a perspective view of a conventional coin sensor.
FIG. 8 is a front view of the coin sensor shown in FIG. 7;
FIG. 9 is a diagram showing a case where the coin sensor shown in FIG. 8 is arranged laterally shifted from a coin passage range.
FIG. 10 is a diagram illustrating an example of a detection sensitivity of the coin sensor illustrated in FIG. 8;
11 is a diagram showing an example of the detection sensitivity of the coin sensor shown in FIG.
12 is a diagram showing another example of the detection sensitivity of the coin sensor shown in FIG.
13 is a diagram showing an example of the detection sensitivity of the coin sensor shown in FIG.
[Explanation of symbols]
1 Coin passage area 2, A, B, C Coin 11, 21 Coin sensor 12, 22 Primary coil 13, 23 Secondary coil 14, 24 Core (core of primary coil)
15, 25 cores (secondary coil cores)
31 oscillating circuit 32 amplifying circuit 33 rectifying circuit

Claims (2)

コイン通路範囲を通過するコインと離隔対向し、且つ互いに対向するように1次コイルと2次コイルとを配置し、前記通過するコインを識別するコインセンサであって、
前記1次コイルと2次コイルとを前記コイン通路範囲の略中央に前記コインの搬送方向に沿って配置したことを特徴とするコインセンサ。
A coin sensor for identifying a passing coin, wherein a primary coil and a secondary coil are arranged so as to be spaced apart and opposed to a coin passing through a coin passage range, and to face each other,
The coin sensor according to claim 1, wherein the primary coil and the secondary coil are arranged substantially in the center of the coin passage area along the coin transport direction.
前記コインセンサは、複数の1次コイルと複数の2次コイルとを有し、前記複数の1次コイル及び2次コイルは、前記コイン通路範囲の中央から幅方向に対称位置に間隔を存して平行に配置されていることを特徴とする請求項1記載のコインセンサ。The coin sensor has a plurality of primary coils and a plurality of secondary coils, and the plurality of primary coils and the secondary coils are spaced from each other in a widthwise symmetric position from the center of the coin passage range. 2. The coin sensor according to claim 1, wherein the coin sensors are arranged in parallel.
JP2003129322A 2003-05-07 2003-05-07 Coin sensor Expired - Fee Related JP4211974B2 (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013101129A (en) * 2012-12-25 2013-05-23 Hamamatsu Koden Kk Eddy current sensor and detection object discrimination circuit
WO2017164347A1 (en) * 2016-03-25 2017-09-28 グローリー株式会社 Magnetic detection device, coin identification device and magnetic detection method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013101129A (en) * 2012-12-25 2013-05-23 Hamamatsu Koden Kk Eddy current sensor and detection object discrimination circuit
WO2017164347A1 (en) * 2016-03-25 2017-09-28 グローリー株式会社 Magnetic detection device, coin identification device and magnetic detection method
US11054488B2 (en) 2016-03-25 2021-07-06 Glory, Ltd. Magnetic detection apparatus, coin recognition unit and magnetic detection method

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