JPS5856154B2 - coin sorting device - Google Patents
coin sorting deviceInfo
- Publication number
- JPS5856154B2 JPS5856154B2 JP6576376A JP6576376A JPS5856154B2 JP S5856154 B2 JPS5856154 B2 JP S5856154B2 JP 6576376 A JP6576376 A JP 6576376A JP 6576376 A JP6576376 A JP 6576376A JP S5856154 B2 JPS5856154 B2 JP S5856154B2
- Authority
- JP
- Japan
- Prior art keywords
- coin
- detection coil
- phase difference
- output
- level
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Electronic Switches (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Testing Of Coins (AREA)
Description
【発明の詳細な説明】
本発明は交番磁界を発生する磁界中に硬貨を置くことで
信号の位相変化にて磁界の変化を検出して硬貨の種類及
び真贋を判定する硬貨選別装置に関するものであり、そ
の目的とするところは精度の高い硬貨の選別を行い得る
硬貨選別装置を提供することにある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a coin sorting device that detects changes in the magnetic field based on changes in the phase of signals by placing a coin in a magnetic field that generates an alternating magnetic field to determine the type and authenticity of the coin. The purpose is to provide a coin sorting device that can sort coins with high precision.
このように磁気特性を調べて検査硬貨を判定する方式は
極めて有効な手段でよあるが、前記交番磁界の周波数で
はたまたま略同−の磁界の変化を示すような偽貨が投入
されると誤って選別する不具合を生じていた。Although this method of determining test coins by examining their magnetic properties is an extremely effective method, if a counterfeit coin that happens to exhibit approximately the same change in magnetic field at the frequency of the alternating magnetic field is inserted, it may be mistaken. There was a problem with the sorting process.
第1図は磁界の変化を位相でとらえた場合の実験結果を
示すものであり横軸の対数軸には周波数そして縦軸には
励磁コイル等の励磁器で誘起される電圧と検出コイル等
の検出器で検出される電圧との位相差をとって正貨であ
る白銅と銅のクラッド貨の磁気特性A、同じく正貨であ
る銀貨の磁気特性B及びA特性Qつ硬貨と同外径で板厚
の薄い銅偽貨の磁気特性C及び正貨である白銅貨の磁気
特性りを夫々示す。Figure 1 shows the experimental results when changes in the magnetic field are viewed in terms of phase. The logarithmic axis of the horizontal axis shows the frequency, and the vertical axis shows the voltage induced by an exciter such as an excitation coil and the voltage induced by an exciter such as a detection coil. The phase difference with the voltage detected by the detector is taken to determine the magnetic property A of the cupronickel and copper clad coin, which is a genuine coin, and the magnetic property B and A property Q of a silver coin, which is also a genuine coin. The magnetic properties C of a thin copper counterfeit coin and the magnetic properties C of a genuine cupronickel coin are shown.
この実験結果より各磁気特性A、B、C,Dは何れかの
磁気特性と交わることがわかる。From this experimental result, it can be seen that each of the magnetic properties A, B, C, and D intersects with any one of the magnetic properties.
即ち成る周波数では位相差が同じ値を生じる為に誤選別
の原因となっている。In other words, the same phase difference occurs at these frequencies, which causes erroneous selection.
このような実験結果から従来の選別装置は各磁気特性A
、B、C,Dが交わる周波数(例えば本実験の条件の下
では4KC付近)を外して設定することで解決したもの
としていた。Based on these experimental results, the conventional sorting device
, B, C, and D intersect (for example, around 4KC under the conditions of this experiment).
しかしながら硬貨通路山内を硬貨がランダムに通過する
と硬貨面と検出コイルとの間隔は常に一定ではなく検査
の度ごとにその間隔は異なっている筈である。However, when coins pass randomly through the coin passage pile, the distance between the coin surface and the detection coil is not always constant, and the distance is different every time an inspection is performed.
ここで第2図に興味ある実験結果を示すが第2図は第1
図と同じ条件(即ち励磁コイル及び検出コイルは同じも
のを使用)の下ではあるがただ第1図は検出コイルと硬
貨面との間隔をOmmにして測定したのに対してこの間
隔を2關にして実験を行ったものである。Figure 2 shows some interesting experimental results.
Although measurements were taken under the same conditions as in the figure (i.e., the same excitation coil and detection coil were used), the distance between the detection coil and the coin surface was set to 0 mm in Figure 1, whereas this distance was measured at 2 mm. The experiment was conducted using
この二つの図を比較すると位相差が全般に低いこともさ
ることながら各磁気特性A、B、C,Dの交点が同じ周
波数でないことを挙げねばならない。Comparing these two figures, it must be mentioned that not only the phase difference is generally low, but also that the intersections of the magnetic characteristics A, B, C, and D are not at the same frequency.
これは励磁コイルより誘起されて検査する金属材料の内
部に渦電流損失を発生せしめる磁束の浸透度が金属材料
の固有抵抗に反比例するためである。This is because the degree of penetration of the magnetic flux induced by the excitation coil and causing eddy current loss inside the metal material to be inspected is inversely proportional to the resistivity of the metal material.
即ち固有抵抗の小さい材質A、B、Cは硬貨表面と検出
コイルの距離が小さいときは渦電流が硬貨表面部に生じ
このとき非常に大きな位相差を生じるが逆にこの距離が
大きくなると位相差が急激に低下することによって、こ
のように第2図り結果は第1図と比較して特に材質A、
B、Cでは大きな違いを示すのである。In other words, for materials A, B, and C with low resistivity, when the distance between the coin surface and the detection coil is short, an eddy current is generated on the coin surface, resulting in a very large phase difference, but conversely, when this distance increases, the phase difference increases. As a result of the sudden decrease in
There is a big difference between B and C.
従って前述の如く一つの実験結果に基いて周波数を設定
しても硬貨の投入状況に応じて硬貨面と検出コイルとの
間隔は一様ではない為に値が一定せず無意味であること
がわかる。Therefore, as mentioned above, even if the frequency is set based on one experimental result, the distance between the coin surface and the detection coil is not uniform depending on the coin insertion situation, so the value will not be constant and it will be meaningless. Recognize.
この対策としては硬貨通路の巾を硬貨の厚みと略等しく
設定して常に硬貨面と検出コイルの間隔を一定にするか
または硬貨通路を傾斜させて硬貨を硬貨通路壁に沿って
転動するようにして一定にする方法がある。As a countermeasure for this, either set the width of the coin passage approximately equal to the thickness of the coin so that the distance between the coin surface and the detection coil is always constant, or tilt the coin passage so that the coins roll along the wall of the coin passage. There is a way to make it constant.
しかしこのように硬貨と検出コイルの間隔を一定に構成
しても種々の偽貨が考えられる。However, even if the distance between the coin and the detection coil is made constant in this way, various counterfeit coins may be generated.
例えば正貨の材質に比較的固有抵抗が近似した材質で外
径を等しくし板厚を適当に変え総合的な電気特性を正貨
に等価させたり略同形状で一部に穴をあける方法が考え
られる。For example, it is possible to use a material whose specific resistance is relatively similar to that of a genuine coin, make the outer diameter the same, change the plate thickness appropriately, and make the overall electrical characteristics equivalent to that of a genuine coin, or make a hole in a part with approximately the same shape. Conceivable.
これらの偽貨に対する対策として硬貨の材質及び形状に
よって異なる夫々の磁気特性をより明確にするよう周波
数を少くとも二点とって三周波数での測定結果を論理回
路で判別する方法が公知である。As a countermeasure against these counterfeit coins, a method is known in which at least two frequencies are measured and a logic circuit is used to determine the measurement results at the three frequencies in order to more clearly distinguish the magnetic properties that differ depending on the material and shape of the coin.
この方法は比較的精度良く判別することが可能であるが
少くとも二つ以上の励磁コイルに夫々別々の周波数を印
加して異なる周波数での回路処理を行うため非常に高価
な装置となってしまうものである。Although this method allows for relatively accurate discrimination, it is a very expensive device because it applies different frequencies to at least two or more excitation coils and performs circuit processing at different frequencies. It is something.
斯かる点から本発明は二種類の剃波数を使用しなくとも
一種類の周波数で磁気特性を明確に把握する方式を提示
するものである。From this point of view, the present invention proposes a method for clearly grasping magnetic characteristics using one type of frequency without using two types of shaving numbers.
第1図及び第2図より磁気特性A、B、C,Dの交点周
波数は硬貨面と検出コイルの間隔の相違によって異なる
ことが明確となったが、例えば磁気特性B及びCは硬貨
面と検出コイルの間隔を07IL7ILにした場合0交
点周波数は3.8KCであるが2間にすると5KCを示
している。From Figures 1 and 2, it is clear that the intersection frequencies of magnetic characteristics A, B, C, and D differ depending on the difference in the distance between the coin surface and the detection coil. For example, magnetic characteristics B and C differ from the coin surface. When the interval between the detection coils is set to 07IL7IL, the zero crossing frequency is 3.8KC, but when it is set to 2, it is 5KC.
このことから励磁コイルの周波数を例えば3.8KCの
みに設定しても硬貨面と検出コイルの間隔を07ILr
IL及び2關で夫々検査すれば一種類の周波数でも充分
に各々の磁気特性の相違が確認できるものである。Therefore, even if the frequency of the excitation coil is set to only 3.8KC, the distance between the coin surface and the detection coil will be 07ILr.
By inspecting both IL and two angles, it is possible to sufficiently confirm the difference in magnetic properties even at one type of frequency.
斯かる特性を利用して本発明は一種類の周波数のみを使
用する簡単な構成で磁気特性の相違を確認できて精度の
高い選別を行う硬貨選別装置を提供するものである。Utilizing such characteristics, the present invention provides a coin sorting device that uses only one type of frequency, has a simple configuration, can confirm differences in magnetic characteristics, and performs highly accurate sorting.
以下図面に基いて一実施例を詳述する。One embodiment will be described in detail below based on the drawings.
第3図は本発明装置の概略図であり、硬貨投入口4より
投入される検査硬貨Cは硬貨通路3を転動する間に夫々
検知器5,6にて順次位相差を測定されて第6図に示す
夫々対応のレベル設定器L1.L2にて検査硬貨Cの金
種が判定される。FIG. 3 is a schematic diagram of the device of the present invention, in which a test coin C inserted from the coin input port 4 is sequentially measured for phase difference by detectors 5 and 6 while rolling in the coin passage 3. The corresponding level setters L1.6 shown in FIG. At L2, the denomination of the test coin C is determined.
夫夫の検知器5,6はコア1’ 、 2’に巻回した励
磁コイル1及び検出コイル2より構成され、第4図のご
とく硬貨面と同じ面に両コイルを配設してもよいしまた
は第5図のごとく硬貨を挟んで一面及び他面に配設して
も良く装置の設計上の都合で適宜使い分けられる。The husband's detectors 5 and 6 are composed of an excitation coil 1 and a detection coil 2 wound around cores 1' and 2', and both coils may be arranged on the same surface as the coin surface as shown in Fig. 4. Alternatively, as shown in FIG. 5, the coins may be placed on one side and the other side with the coin sandwiched between them, depending on the design of the device.
また検知器5,6の位相検出装置15.16は励磁コイ
ル1と検出コイル2の信号位相差を夫々検出してその値
に応じた電圧レベルを出力するものである。Further, the phase detection devices 15 and 16 of the detectors 5 and 6 detect the signal phase difference between the excitation coil 1 and the detection coil 2, respectively, and output a voltage level corresponding to the detected value.
そして検知器5,6の夫々の励磁コイル1に印加する周
波数は同じであるが、検出コイル2の検出面と硬貨面と
の間隔は夫々差を持たせるべく硬貨通路壁7と検出コイ
ル2を有するコア2との間隔tは相違させなければなら
ない。The frequencies applied to the excitation coils 1 of the detectors 5 and 6 are the same, but the distance between the detection surface of the detection coil 2 and the coin surface is different between the coin passage wall 7 and the detection coil 2. The distance t between the core 2 and the core 2 must be different.
このような検知器5,6に検査硬貨Cが通過するとこの
間隔tに応じた位相差が夫々検出され各検知器5,6に
対応した前記レベル設定器L1.L2にて金種が判定さ
れる。When the test coin C passes through such detectors 5 and 6, a phase difference corresponding to this interval t is detected, and the level setter L1. The denomination is determined at L2.
即ちレベル設定器L1は検知器5が硬貨選別装置の取扱
い金種に応じてその正貨にて取り得る位相差が許容でき
る誤差範囲のレベルで設定され、同じくレベル設定器L
2も検知器6がやはり前記金種に応じてその正貨にて取
り得る位相差が許容できる誤差範囲のレベルで設定され
ている。That is, the level setter L1 is set at a level within an allowable error range for the phase difference that the detector 5 can take with a genuine coin depending on the denomination handled by the coin sorting device, and the level setter L1 is set at a level within an allowable error range.
In the case of No. 2, the detector 6 is also set at a level within an allowable error range for the phase difference that can be obtained with the genuine coin depending on the denomination.
そして両レベル設定器L1.L2の前記判定が一致すれ
ば即ちAND論理にてこの硬貨選別装置は最終的に検査
硬貨Cの金種を判断し、金種毎に設けられた硬貨収納筒
8.9.10の倒れかに検査硬貨Cを導入する。and both level setters L1. If the above judgments of L2 match, that is, using AND logic, this coin sorting device finally judges the denomination of the test coin C, and determines whether the coin storage cylinders 8, 9, and 10 provided for each denomination have fallen. Introduce test coin C.
例えば白銅−銅クラッド貨、銀貨、白銅貨を区別するこ
とを目的とする本実施例では検知器5の前記tの値を0
1171(即ち第1図の特性)検知器6の前記tの値を
21+!2+1 (即ち第2図の特性)に設定し、両方
の励磁コイル1とも発振器20に接続されて3.8KC
の交番磁界を誘起している。For example, in this embodiment whose purpose is to distinguish between cupronickel-copper clad coins, silver coins, and cupronickel coins, the value of t of the detector 5 is set to 0.
1171 (i.e. the characteristic shown in FIG. 1) The value of t of the detector 6 is 21+! 2+1 (i.e., the characteristics shown in Figure 2), and both excitation coils 1 are connected to the oscillator 20 to generate 3.8KC.
This induces an alternating magnetic field.
そして第1図に示す特性に関してレベル設定器L1には
、位相差104°に対応して上限電圧レベル11及び下
限電圧レベルe2が設定されており、また位相差36°
に対応して上限電圧レベル12及び下限電圧レベルe4
が設定されている。Regarding the characteristics shown in FIG. 1, the level setter L1 is set with an upper limit voltage level 11 and a lower limit voltage level e2 corresponding to a phase difference of 104 degrees, and a phase difference of 36 degrees.
Upper limit voltage level 12 and lower limit voltage level e4 correspond to
is set.
したがってレベル設定器L1は、位相検出装置15から
出力される信号電圧が41〜e2の範囲内にあると、位
相差が104’付近を示すクラッド貨或いは銀貨が検知
器5を通過したことを判定して出力Mを生じ、また位相
検出装置15から出力される信号電圧が13〜14の範
囲内にあると、位相差が36°゛付近を示す白銅貨が検
知器5を通過したことを判定して出力Nを生じる。Therefore, when the signal voltage output from the phase detection device 15 is within the range of 41 to e2, the level setter L1 determines that a clad coin or a silver coin whose phase difference is around 104' has passed through the detector 5. If the signal voltage output from the phase detection device 15 is within the range of 13 to 14, it is determined that the cupronickel coin has passed through the detector 5 with a phase difference of around 36°. to produce an output N.
一方、第2図に示す特性に関してレベル設定器L2には
、位相差36°に対応して上限電圧レベル15及び下限
型モレベル16が設定されており、位相差26°に対応
して上限電圧レベル17及び下限電圧レベル18が設定
されており、位相差13°に対応して上限重臣レベルl
、及び下限電圧レベル11oが設定されている。On the other hand, regarding the characteristics shown in FIG. 2, an upper limit voltage level 15 and a lower limit type mole level 16 are set in the level setter L2 corresponding to a phase difference of 36 degrees, and an upper limit voltage level is set corresponding to a phase difference of 26 degrees. 17 and a lower limit voltage level 18 are set, and an upper limit voltage level l is set corresponding to a phase difference of 13°.
, and a lower limit voltage level 11o are set.
したがって硬貨の検知器6の通過にてレベル設定器L2
は、位相検出装置16より出力される信号電圧が12〜
16の範囲内にあると銀貨と判定して出力Oを生じ17
〜18の範囲内にあるとクラッド貨と判定して出力Pを
生じ、l、〜110の範囲内にあると白銅貨と判定して
出力Qを生じる。Therefore, when the coin passes through the detector 6, the level setter L2
, the signal voltage output from the phase detection device 16 is 12~
If it is within the range of 16, it will be determined that it is a silver coin and output O will be generated.
If it is within the range of ~18, it is determined that it is a clad coin and an output P is generated, and if it is within the range of l, ~110, it is determined that it is a cupronickel coin and an output Q is generated.
従って硬貨Cが投入され、レベル設定器L1゜L2に夫
々出力M及び出力Oが生じるとANDゲート17の出力
で銀貨であることが示され、またレベル設定器L1.L
2に夫々出力N及び出力Qが生じるとANDゲート18
の出力で白銅貨であることが示され、そしてレベル設定
器L1.L2に夫夫出力M及び出力Pが生じるとAND
ゲート19の出力でクラッド貨であることが示される。Therefore, when a coin C is inserted and the outputs M and O are generated in the level setters L1 and L2, the output of the AND gate 17 indicates that it is a silver coin, and the level setters L1 and L2 respectively output an output M and an output O. L
When output N and output Q occur at 2, respectively, the AND gate 18
The output of L1. indicates that it is a cupronickel coin, and the level setter L1. When husband output M and output P occur in L2, AND
The output of gate 19 indicates that the coin is a clad coin.
しかしながら検査硬貨Cの検知器5,6でもとめられる
位相差がレベル設定器L1.L2のどちらか一方若しく
は両方のいづれの許容レベル内にもあてはまらない場合
には、ANDゲート17,18,19゜に出力が得られ
ず贋硬貨と判定して返却通路11より返却される。However, the phase difference detected by the detectors 5 and 6 of the test coin C is the level setter L1. If one or both of L2 does not fall within the allowable level, no output is obtained from the AND gates 17, 18, and 19°, and the coin is determined to be a counterfeit coin and is returned from the return path 11.
このような各硬貨収納筒8,9゜10の導入手段として
は鉄筒の上端開口にあって閉塞時には硬貨通路3を形成
している各硬貨収納筒蓋12,13,14の何れかをA
NDゲート17.18,19の出力に基いてソレノイド
により開放するようにし、硬貨導入を周知のコインスイ
ッチにより確認後再び閉塞するように構成すれば良く、
前記AND論理の出力が無い場合には何れの硬貨収納筒
蓋12,13,14は開放せず返却通路11に導入され
る。The introduction means for each of the coin storage cylinders 8, 9 and 10 is to use any one of the coin storage cylinder lids 12, 13 and 14 which are located at the upper end opening of the iron cylinder and form the coin passage 3 when closed.
The ND gates 17, 18, and 19 may be opened by a solenoid based on their outputs, and after confirmation of coin introduction by a well-known coin switch, the gates may be closed again.
If there is no output from the AND logic, none of the coin storage cylinder lids 12, 13, 14 is opened and the coins are introduced into the return path 11.
以上詳述してきた本発明は硬貨面と検出コイルの間隔を
変えて測定することで検査硬貨の磁気特性を明確に把握
することができ精度の高い選別が期待できる。The present invention, which has been described in detail above, makes it possible to clearly grasp the magnetic characteristics of test coins by measuring the distance between the coin surface and the detection coil while changing the distance between the coin surface and the detection coil, and is expected to perform highly accurate sorting.
しかも単一の周波数しか使用しない為に回路が複雑とな
らず安価に製造できる利点がある。Moreover, since only a single frequency is used, the circuit is not complicated and can be manufactured at low cost.
第1図及び第2図は硬貨面と検出コイルの差を夫々Om
m、2mrttにした場合の銀貨、クラッド貨、白銅貨
の周波数に対する位相差特性を示し、第3図は本発明の
硬貨選別装置そして第4図及び第5図は検知器の概略を
夫々示し、第6図は回路を示すブロック図である。
主な図番の説明、1・・・・・・励磁コイル、2・・・
・・・検出コイル、3・・・・・・硬貨通路。Figures 1 and 2 show the difference between the coin surface and the detection coil, respectively.
Fig. 3 shows the coin sorting device of the present invention, and Figs. 4 and 5 show the outline of the detector, respectively. FIG. 6 is a block diagram showing the circuit. Explanation of main drawing numbers, 1...excitation coil, 2...
...Detection coil, 3...Coin passage.
Claims (1)
検知器を、各検出コイルと硬貨面までの距離が互いに異
るように硬貨の移動方向に沿って順次配設すると共に、
前記励磁コイルには全て同一の周波数による発振磁界を
形成せしめ、硬貨の通過により各々の前記検知器にて測
定される前記励磁コイルと前記検出コイルの信号位相差
の値が夫夫予定範囲内にあれば通過硬貨を適正と判定す
る硬貨選別装置。1. At least two detectors that are connected to the excitation coil and the detection coil are sequentially arranged along the direction of movement of the coin so that the distances from each detection coil to the coin surface are different from each other, and
An oscillating magnetic field having the same frequency is formed in all of the excitation coils, and when a coin passes, the value of the signal phase difference between the excitation coil and the detection coil measured by each of the detectors is within a predetermined range. A coin sorting device that determines passing coins as appropriate.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6576376A JPS5856154B2 (en) | 1976-06-04 | 1976-06-04 | coin sorting device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6576376A JPS5856154B2 (en) | 1976-06-04 | 1976-06-04 | coin sorting device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS52149199A JPS52149199A (en) | 1977-12-12 |
JPS5856154B2 true JPS5856154B2 (en) | 1983-12-13 |
Family
ID=13296378
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6576376A Expired JPS5856154B2 (en) | 1976-06-04 | 1976-06-04 | coin sorting device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5856154B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6814499B1 (en) * | 2020-09-30 | 2021-01-20 | Eddyrent Japan株式会社 | Coin identification sensor and coin identification method |
-
1976
- 1976-06-04 JP JP6576376A patent/JPS5856154B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS52149199A (en) | 1977-12-12 |
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