JPS6388697A - Paper money identifier - Google Patents
Paper money identifierInfo
- Publication number
- JPS6388697A JPS6388697A JP61233319A JP23331986A JPS6388697A JP S6388697 A JPS6388697 A JP S6388697A JP 61233319 A JP61233319 A JP 61233319A JP 23331986 A JP23331986 A JP 23331986A JP S6388697 A JPS6388697 A JP S6388697A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic head
- circuit
- multiplexer
- differential amplifier
- bias
- 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.)
- Granted
Links
- 238000010586 diagram Methods 0.000 description 3
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、磁気ヘッドを用いて紙幣等の印刷物より磁気
に関連した信号を検出し、その紙幣等の真偽を判別する
紙幣識別装置に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a banknote identification device that uses a magnetic head to detect magnetism-related signals from printed matter such as banknotes and determines the authenticity of the banknotes. .
［従来の技術］
一般に、紙幣識別装置は、第３図に示すように紙幣１の
両側に設けられた磁化帯（斜線で表示）を、２個の磁気
ヘッド２および３にてトレースし、磁気を検出すること
により真偽の判別を行うものである。しかして、かかる
装置を安価に提供するために第４図に示す如く、２個の
磁気ヘット２．３の出力を共通の信置処理回路４へ人力
し、交互に信号処理を行い制御部５で判別することが多
く行なわれている。[Prior Art] Generally, as shown in FIG. 3, a banknote identification device traces a magnetized band (indicated by diagonal lines) provided on both sides of a banknote 1 using two magnetic heads 2 and 3, and detects the magnetic Authenticity is determined by detecting . In order to provide such a device at a low cost, as shown in FIG. It is often used to distinguish between
このような信号ＩＡ理理路路としては、第５図に示すよ
うな構成のものが知られている。すなわち、各磁気ヘッ
ト２，３はそわぞわ増幅回路６゜パルス化回路７を経て
パルス化された後、切換回路８に入力され、この切換回
路８で、δｎ気ヘッド２．３からのイパ号は切換えｊｊ
！択されて制御部５に人力さねる。As such a signal IA logic circuit, one having a configuration as shown in FIG. 5 is known. That is, each magnetic head 2, 3 is pulsed through an amplifying circuit 6 and a pulse generator 7, and then input to a switching circuit 8. Change the number jj
! is selected and the control section 5 is manually operated.
［発明が解決しようとする問題点コ
しかしながら、かかる信号処理回路を有する紙幣識別装
面は、２重の回路を要し複雑となるばかりかコストも高
くなるという問題があった。[Problems to be Solved by the Invention] However, a bill identification device having such a signal processing circuit has the problem that it requires a double circuit, which not only makes it complicated but also increases cost.
本発明の目的は、土述の問題を解消し、安価で簡単な構
成の紙幣識別装面を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to solve the aforementioned problems and to provide a banknote identification surface that is inexpensive and has a simple structure.
Ｅ問題点を解決するための手段コ
上記目的を達成するために、本発明は複数の磁気ヘッド
の片側端子を共通にして、差動増幅器の反転入力側に接
続し、磁気ヘッドの反対側の端子をアナログスイッチよ
り成るマルチプレクサを経由して、作ｉ１）増幅器の非
反転入力側に接続し、マルチプレクサに制御信号を送り
、マルチプレクサで切換えて［（］１気ヘッドを選択す
るようにしたことを特徴とする。Means for Solving Problem E To achieve the above object, the present invention connects one side terminal of a plurality of magnetic heads in common to the inverting input side of a differential amplifier, and connects the terminals on the opposite side of the magnetic heads to the inverting input side of a differential amplifier. Connect the terminal to the non-inverting input side of the amplifier via a multiplexer consisting of an analog switch, send a control signal to the multiplexer, and select the [(]1 head) by switching the terminal with the multiplexer. Features.
［作 用コ
上記構成になる本発明の詳細な説明すると、アナログス
イッチより成るマルチプレクサに、例オばＨレベルの制
御信号を送ると、スイッチが切換えらね片側の磁気ヘッ
ドのピックアップ信号が差動増幅器に送られ増幅される
。[Function] To explain in detail the present invention having the above configuration, when a control signal of, for example, H level is sent to a multiplexer consisting of an analog switch, the switch does not change and the pick-up signal of the magnetic head on one side becomes differential. It is sent to an amplifier and amplified.
また、例えば、Ｌレベルの制御信号がマルチプレクサに
送られると、スイッチが切換えられ、他の磁気ヘッドの
ビックアップ１３号が差動増幅器に送られ増幅される。Further, for example, when an L level control signal is sent to the multiplexer, a switch is changed, and the pickup No. 13 of the other magnetic head is sent to the differential amplifier and amplified.
従って、複数の磁気ヘッドが直接増幅器に接続できるの
で回路構成を簡素化でき安価とし得る。Therefore, since a plurality of magnetic heads can be directly connected to the amplifier, the circuit configuration can be simplified and the cost can be reduced.
［実施例］ 以下、本発明の実施例を添付図面を参照して説明する。[Example] Embodiments of the present invention will be described below with reference to the accompanying drawings.
第１図は、本発明の実施例を示すもので、ｌＯは差動増
幅回路、２０は第１の磁気ヘッド、３０は第２の磁気ヘ
ッド、４０は制御部である。FIG. 1 shows an embodiment of the present invention, where lO is a differential amplifier circuit, 20 is a first magnetic head, 30 is a second magnetic head, and 40 is a control section.
差動増幅回路１０は、差動増幅器１１、アナログスイッ
チから成るマルチプレクサ１２、抵抗Ｒ１，Ｒ２゜Ｒ３
、Ｒ４を含む。The differential amplifier circuit 10 includes a differential amplifier 11, a multiplexer 12 consisting of an analog switch, and resistors R1, R2°R3.
, R4.
第１磁気ヘツド２ａど第２磁気ヘツド３ｏの片側端Ｔは
共通にして、抵抗Ｒ，を介して差動増幅器１１の反転入
力側に接続され、この反転入力側と出力側とは抵抗Ｒ２
を介在させて接続されている。One end T of the first magnetic head 2a and the second magnetic head 3o are commonly connected to the inverting input side of the differential amplifier 11 via a resistor R, and the inverting input side and the output side are connected to each other by a resistor R2.
are connected through an intermediary.
一方、第１磁気ヘツド２０と第２磁気ヘツド３ｏのそれ
ぞれの反対側の端子は、抵抗Ｒ５を介して独立にマルチ
プレクサ１２に接続され、このマルチプレクサ１２を経
由１．て、差動増幅器１１の非反転入力側！Ｌ：接続さ
れている。On the other hand, the opposite terminals of the first magnetic head 20 and the second magnetic head 3o are independently connected to a multiplexer 12 via a resistor R5. So, the non-inverting input side of the differential amplifier 11! L: Connected.
また、この非反転入力側は抵抗Ｒ４を介して設置される
。Moreover, this non-inverting input side is installed via a resistor R4.
マルチプレクサ１２には制御部４ｏからの制御信号がさ
られる。A control signal from the control section 4o is applied to the multiplexer 12.
この制御信号は、第３図に示した紙幣１の両側に交互に
設置−Ｊらねた磁化・丑の切換周期等に同期させて１に
ら才するもので紙幣の送り速度と磁化帯の長さに、Ｊ：
って決定される。This control signal is set alternately on both sides of the banknote 1 shown in Fig. 3, and is activated in synchronization with the switching cycle of the magnetization/ox, etc. Length, J:
It is determined that
一制御部４０はマイクロコンピュータ等で構成され、か
かる４、１Ｊ御信号をマルチプレクサ１２に選択指令と
して与える。The control section 40 is composed of a microcomputer or the like, and supplies the 4, 1J control signal to the multiplexer 12 as a selection command.
例えば、ｒ ＨＪレベルの制御４３号であれば、第１磁
気ヘツド２０が選択され、「Ｌ」レベルであれば第２磁
気ヘツド３０が選択されるのである。このような構成に
なる差動増幅回路１０のゲインは、チのＯＮ抵抗）とな
る。For example, if the control number 43 is at the rHJ level, the first magnetic head 20 is selected, and if it is at the "L" level, the second magnetic head 30 is selected. The gain of the differential amplifier circuit 10 having such a configuration is equal to (ON resistance).
また、第２図に、本実施例で使用する無バイアスで用い
る磁気ヘッドの例を示す。これは、コア２３．２３の間
にバイアス用の永久磁石２４を挟持させた、いわゆる磁
石内蔵型である。Further, FIG. 2 shows an example of a magnetic head used without bias in this embodiment. This is a so-called built-in magnet type in which a bias permanent magnet 24 is sandwiched between cores 23 and 23.
無バイアスで用いる磁気ヘッドとしては、他に通常の磁
気ヘッドを一旦、直流で励磁させたものであってもよい
。The magnetic head used without bias may also be a normal magnetic head that is once excited with direct current.
このように、磁気ヘッドを無バイアスで用いる磁気ヘッ
トとすることにより、直流バイアス回路などの外部バイ
アス回路を不要とし、回路を平衡化することで、差動増
幅器の使用を可能１（らしめたのである。In this way, by making the magnetic head a magnetic head that uses no bias, there is no need for an external bias circuit such as a DC bias circuit, and by balancing the circuit, it is possible to use a differential amplifier (1). It is.
［発明の効果コ
以上の説明から明らかなように、本発明によりば、布教
の磁気ヘッドを直接増幅回路に接続できるので回路構成
が簡単となり安価にできる。[Effects of the Invention] As is clear from the above description, according to the present invention, the missionary magnetic head can be directly connected to the amplifier circuit, making the circuit configuration simple and inexpensive.
また、磁気ヘッドを無バイアスで用いているので、余分
な外部バイアス回路がなく回路を平衡化できるので外乱
７ノイズ等に対しても性能の良いものが得られる。Furthermore, since the magnetic head is used without bias, there is no need for an extra external bias circuit and the circuit can be balanced, resulting in good performance even against disturbances such as noise.
第１図は本発明の実施例を示す回路図、第２図は、無バ
イアスで用いる磁気ヘッドのへ例を示す正面図、
第３図は、紙幣の磁化帯を示す平面口、第４図は、従来
の紙幣識別装面のブロック図、第５図は、その信号処理
回路部を詳細に示すブロック図である。
２、 ３．２０．３０・・・磁気ヘッド、４・・・信号
処理回路、
５．４０・・・制御部、
６・・・増幅回路、
７・・・パルス化回路、
１０・・・差動増幅回路、
１１・・・差動増幅器、
１２・・・アナログスイッヂより成るマルヂブレクザう
２，１０殖初電幅喝浴
第２図
、１駅茅
ｈ＼幣２Ｉ３廊イと、、か列くずおか）迎第３図
才足象の系氏壱牟ふ周ｆｌ謔ｔ１の７℃・ゾ２丁図第４
図Fig. 1 is a circuit diagram showing an embodiment of the present invention, Fig. 2 is a front view showing an example of a magnetic head used without bias, Fig. 3 is a plane opening showing the magnetized band of a banknote, Fig. 4 1 is a block diagram of a conventional banknote identification device, and FIG. 5 is a block diagram showing the signal processing circuit section thereof in detail. 2, 3.20.30...Magnetic head, 4...Signal processing circuit, 5.40...Control unit, 6...Amplification circuit, 7...Pulsing circuit, 10...Difference Dynamic amplifier circuit, 11... Differential amplifier, 12... Analog switch. (Kuzuoka) 3rd figure, the lineage of the elephant, Ichimufu Shu fl t1, 7°C, 2nd figure, 4th
figure
Claims (1)
幅器の反転入力側に接続し、前記磁気ヘッドの反対側の
端子をアナログスイッチより成るマルチプレクサを経由
して、前記作動増幅器の非反転入力側に接続し、前記マ
ルチプレクサに制御信号を送り、該マルチプレクサで切
換えて磁気ヘッドを選択するようにしたことを特徴とす
る紙幣識別装置。 ２）前記磁気ヘッドには、バイアスを印加しないことを
特徴とする特許請求の範囲第１項記載の紙幣識別装置。 ３）前記磁気ヘッドには、バイアス用磁石を内蔵したこ
とを特徴とする特許請求の範囲第２項記載の紙幣識別装
置。[Claims] 1) One terminal of a plurality of magnetic heads is made common and connected to the inverting input side of a differential amplifier, and the terminal on the other side of the magnetic head is connected via a multiplexer consisting of an analog switch, A banknote identification device connected to a non-inverting input side of the operational amplifier, sending a control signal to the multiplexer, and switching the multiplexer to select a magnetic head. 2) The banknote identification device according to claim 1, wherein no bias is applied to the magnetic head. 3) The banknote identification device according to claim 2, wherein the magnetic head has a built-in bias magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61233319A JPH0648510B2 (en) | 1986-10-02 | 1986-10-02 | Bill validator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61233319A JPH0648510B2 (en) | 1986-10-02 | 1986-10-02 | Bill validator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6388697A true JPS6388697A (en) | 1988-04-19 |
| JPH0648510B2 JPH0648510B2 (en) | 1994-06-22 |
Family
ID=16953271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61233319A Expired - Lifetime JPH0648510B2 (en) | 1986-10-02 | 1986-10-02 | Bill validator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0648510B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06102252A (en) * | 1990-07-17 | 1994-04-15 | Gao Ges Autom Org Mbh | Testing device for magnetized object under test |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5824984A (en) * | 1981-08-06 | 1983-02-15 | 国産金属工業株式会社 | Magnetic detection circuit for paper money discriminator |
-
1986
- 1986-10-02 JP JP61233319A patent/JPH0648510B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5824984A (en) * | 1981-08-06 | 1983-02-15 | 国産金属工業株式会社 | Magnetic detection circuit for paper money discriminator |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06102252A (en) * | 1990-07-17 | 1994-04-15 | Gao Ges Autom Org Mbh | Testing device for magnetized object under test |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0648510B2 (en) | 1994-06-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
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