JPS6045890A - Discrimination of sheet paper - Google Patents
Discrimination of sheet paperInfo
- Publication number
- JPS6045890A JPS6045890A JP58152820A JP15282083A JPS6045890A JP S6045890 A JPS6045890 A JP S6045890A JP 58152820 A JP58152820 A JP 58152820A JP 15282083 A JP15282083 A JP 15282083A JP S6045890 A JPS6045890 A JP S6045890A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- discrimination
- signal
- sensor
- vibration detection
- 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.)
- Pending
Links
Landscapes
- Inspection Of Paper Currency And Valuable Securities (AREA)
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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（２１）発明の技術分野
本発明は磁気的方式の紙葉類弁別装置に係り、とくに該
装置における弁別能力の向上に関する。DETAILED DESCRIPTION OF THE INVENTION (21) Technical Field of the Invention The present invention relates to a magnetic paper sheet discriminating device, and particularly to improving the discriminating ability of the device.
（ｂ）技術の背景
近年、自動預金機あるいは自動販売機の普及が進展しつ
つあるが、これらの機器においては、紙幣の金種さらに
は真偽を自動的に弁別することが必要である。従来、こ
の種の機器における弁別方式には、光学的手段を用いる
ものと磁気的手段を用いるものとがある。(b) Background of the Technology In recent years, automatic teller machines and automatic vending machines have become increasingly popular, but these devices need to automatically distinguish the denomination of banknotes as well as the authenticity of the banknotes. Conventionally, discrimination methods in this type of equipment include those using optical means and those using magnetic means.
（ｃｌ従来技術と問題点
磁気的手段を用いる方式は、紙幣等の表面にθり気イン
クを用いて形成されたパターンを磁気センサにより検出
するのであるが、一般に該磁気センサは走行している紙
幣等の被検紙葉類と接触状態で動作するように設計され
ている。このために、該磁気センサからの出力信号には
、通電、摺動ノイズが重畳されている。該摺動ノイズば
、磁気センサと紙葉類との機械的摺動の際に該磁気セン
サに対して断続的に加わる衝撃力に関係するものと考え
られ、その大きさは不規則に変動するために、検出すべ
き磁気信号のＳ／Ｎ比を著しく悪化さ−Ｕ゛、弁別能力
を低下させる原因となっていた。(cl Prior Art and Problems) In the method using magnetic means, a pattern formed using θ ink on the surface of a banknote, etc. is detected by a magnetic sensor, but generally the magnetic sensor is It is designed to operate in contact with paper sheets to be inspected such as banknotes.For this reason, energization and sliding noise are superimposed on the output signal from the magnetic sensor.The sliding noise For example, this is thought to be related to the impact force that is intermittently applied to the magnetic sensor during mechanical sliding between the magnetic sensor and the paper sheet, and the magnitude of the impact fluctuates irregularly, making detection difficult. This significantly deteriorates the S/N ratio of the magnetic signal to be detected, causing a decrease in discrimination ability.
ｆｄ１発明の目的
本発明は、紙葉類弁別装置における磁気センサの出力信
号から上記のような摺動ノイズ成分を除去可能とし、該
装置の弁別能力を向上させることを目的とする。fd1 Object of the Invention The present invention aims to make it possible to remove the above-mentioned sliding noise component from the output signal of a magnetic sensor in a paper sheet discrimination device, and to improve the discrimination ability of the device.
（ｅ）発明の構成
本発明は、紙葉類の表面に形成された磁気的パターンを
検出して行う紙葉類弁別方法において、磁気センサに振
動検知センサを搭載し、磁気的パターンを検出する際に
おける該磁気センサの振動を該振動検知センサによって
検出し、該振動検知センサの出力信号により該磁気セン
サの出力信号を補正し′ζ弁別用信号とするこ、とを特
徴とする。(e) Structure of the Invention The present invention provides a paper sheet discrimination method performed by detecting a magnetic pattern formed on the surface of a paper sheet, in which a vibration detection sensor is mounted on the magnetic sensor to detect the magnetic pattern. The present invention is characterized in that the vibration of the magnetic sensor during the operation is detected by the vibration detection sensor, and the output signal of the magnetic sensor is corrected based on the output signal of the vibration detection sensor to be used as a signal for 'ζ discrimination.
（ｆ１発明の実施例 以下に本発明の実施例を図面を参照して説明する。(Example of f1 invention Embodiments of the present invention will be described below with reference to the drawings.
第１図は本発明に係る弁別方式の機能ブロック図であっ
て、磁気センサ１は矢印方向に移動するｉ１Ｅ幣等の紙
葉類２と接触し、該紙葉類２上に形成されている磁気的
パターンを検出している。また、磁気センサ１には、該
磁気センサ１の機械的振動を検出するだめの振動検知セ
ンサ３が搭載されている。該振動検知センサ３ば、その
目的に従えば、磁気センサ１に直接ねし止めあるいは接
着等によって搭載されることが望ましく、また、それ自
体が紙葉類２と接触する必要はない。なお、該振動検知
センサ３としては、いわゆるピックアップセンサと称さ
れている、一種の加速度計等が好適である。FIG. 1 is a functional block diagram of the discrimination method according to the present invention, in which a magnetic sensor 1 comes into contact with paper sheets 2 such as i1E banknotes moving in the direction of the arrow, and is formed on the paper sheets 2. Detecting magnetic patterns. Further, the magnetic sensor 1 is equipped with a vibration detection sensor 3 for detecting mechanical vibrations of the magnetic sensor 1. According to its purpose, the vibration detection sensor 3 is desirably mounted directly on the magnetic sensor 1 by screwing or adhesive, and there is no need for the vibration detection sensor 3 to come into contact with the paper sheet 2 itself. Note that, as the vibration detection sensor 3, a type of accelerometer or the like called a so-called pickup sensor is suitable.
振動検知センサ３の出力信号はアンプ４で増幅されたの
ち、振動検出回路５に入力し、ここで磁気センサの振動
に比例した補正信号が磁気信号検出回路６に送られる。The output signal of the vibration detection sensor 3 is amplified by an amplifier 4 and then input to a vibration detection circuit 5, where a correction signal proportional to the vibration of the magnetic sensor is sent to a magnetic signal detection circuit 6.
一方、磁気センサ１の出力信号はアンプ４１で増幅され
たのち、磁気信号補正回路６に入力さる。On the other hand, the output signal of the magnetic sensor 1 is amplified by the amplifier 41 and then input to the magnetic signal correction circuit 6.
ここで磁気検出信号は前記振動検出回路５からの補正信
号によって補正される。すなわち、該振動検出信号は前
記摺動ノイズの原因である磁気センサ１に対する衝撃力
が振動として検出されたものであると見なすことができ
るので、磁気検出信号と補正信号との差信号を取り出せ
は、該差信号が磁気検出信号から摺動ノイズ成分が除去
された、本来の磁気パターン信号に相当することになる
。Here, the magnetic detection signal is corrected by a correction signal from the vibration detection circuit 5. In other words, since the vibration detection signal can be considered to be a vibration detected by the impact force on the magnetic sensor 1, which is the cause of the sliding noise, it is necessary to extract the difference signal between the magnetic detection signal and the correction signal. , the difference signal corresponds to the original magnetic pattern signal obtained by removing the sliding noise component from the magnetic detection signal.
これを第２図以下によって、より具体的に説明する。す
なわち、第２図は磁気センサの出力信号波形であって、
摺動ノイス成分を含んだ状態のままである。同図におい
て、波形の周期は磁気パターンを形成する磁性体におけ
る磁区の通過に対応しており必ずしも一定ではない。ま
た該波形のピークの包絡線の波形が摺動ノイズ成分であ
って、その周期は磁気パターン表面あるいは紙葉類表面
の凹凸等に関係し、実際にはそのピーク値および周期の
不規則性は図示したよりも大きい。一方、振動検知セン
サの出力信号波形は第３図のようであり、前記摺動ノイ
ズ成分の波形と同様に単純化して示しである。This will be explained in more detail with reference to FIG. 2 and subsequent figures. That is, FIG. 2 shows the output signal waveform of the magnetic sensor,
It remains in a state containing sliding noise components. In the figure, the period of the waveform corresponds to the passage of magnetic domains in the magnetic material forming the magnetic pattern, and is not necessarily constant. In addition, the waveform of the envelope of the peak of the waveform is a sliding noise component, and its period is related to the unevenness of the magnetic pattern surface or the surface of paper sheets, and in reality, the irregularity of the peak value and period is Larger than shown. On the other hand, the output signal waveform of the vibration detection sensor is as shown in FIG. 3, which is shown in a simplified manner similar to the waveform of the sliding noise component.
ここで、各時刻において、第２図に示す磁気センサの出
力信号から第３図に示す振動検知センサの出力信号を減
じる（補正する）と、第４図に示すような波形の信号が
得られる。これが検出すべき本来の磁気パターン信号で
漏る。Here, if the output signal of the vibration detection sensor shown in Figure 3 is subtracted (corrected) from the output signal of the magnetic sensor shown in Figure 2 at each time, a signal with a waveform as shown in Figure 4 is obtained. . This leaks in the original magnetic pattern signal that should be detected.
上記のようにしてネｄｉ正、す□なわち摺動ノイス成分
を除去することによって整形された磁気検出信号は、第
１図に示す処理回路７に入力され、ここで所定レヘルて
スライスされたのち、Ａ／Ｄ変換および２値化されてメ
モリに格納され、弁別処理データとして用いられる。The magnetic detection signal, which has been shaped as described above by removing the negative noise component, that is, the sliding noise component, is input to the processing circuit 7 shown in FIG. 1, where it is sliced at a predetermined level. Thereafter, the data is A/D converted and binarized, stored in a memory, and used as discrimination processing data.
上記のように、本発明の弁別方法においては、処理回路
７においてスライスされる磁気検出信号が整形されてい
るために、２値化信号に入る誤差が小さくなり、以後の
弁別処理におけるマージンを高くすることができる。す
なわち、本発明の方法を用いた弁別装置においては、従
来は紙幣等を誤弁別あるいは弁別不能としてしまうよう
な大きさの摺動ノイズが混入しても、正常な弁別が可能
となるのである。As described above, in the discrimination method of the present invention, since the magnetic detection signal sliced in the processing circuit 7 is shaped, the error entering the binarized signal is reduced, and the margin in the subsequent discrimination processing is increased. can do. That is, in the discrimination device using the method of the present invention, normal discrimination is possible even if there is a sliding noise of a magnitude that would conventionally cause banknotes to be incorrectly discriminated or rendered indistinguishable.
（ｇ＋発明の効果
本発明によれば、紙葉類弁別装置の弁別能力を比較的容
易に向上することができ、高信頼度の、かつ高能率の紙
葉類弁別を可能とする効果がある。(g+ Effect of the invention According to the present invention, the discrimination ability of the paper sheet discriminator can be improved relatively easily, and there is an effect that highly reliable and highly efficient paper sheet discrimination is possible. .
第１図は本発明に係る紙葉類弁別方式の機能ゾロツク図
、第２図ないし第４図はその信号波形を示す図である。
図において、■は磁気センサ、２ば紙葉類、３６才振動
検知センザ、４および４１はアンプ、５は振動検出回路
、６は磁気信号補正回路、７は処理回路である。FIG. 1 is a functional diagram of the paper sheet discrimination system according to the present invention, and FIGS. 2 to 4 are diagrams showing signal waveforms thereof. In the figure, ■ is a magnetic sensor, 2 is a paper sheet, a 36-year-old vibration detection sensor, 4 and 41 are amplifiers, 5 is a vibration detection circuit, 6 is a magnetic signal correction circuit, and 7 is a processing circuit.
Claims (1)
う１ｌｌｃ葉類弁別方法において、磁気センサに振動検
知センサを搭載し、磁気的パターンを検出する際の該磁
気センサの振動を振動検知センサによって検出し１、該
振動検知センサの出力信号により該磁気セン力・の出力
信号を補正して弁別用信号とすることを特徴とする紙葉
類弁別方法。In the 1llc leaf discrimination method performed by detecting a magnetic pattern formed on the surface of paper sheets, a vibration detection sensor is mounted on the magnetic sensor, and the vibration of the magnetic sensor when detecting the magnetic pattern is detected by vibration. 1. A method for discriminating paper sheets, comprising: detecting the paper sheets with a sensor; and correcting the output signal of the magnetic sensor using the output signal of the vibration detection sensor to obtain a discrimination signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58152820A JPS6045890A (en) | 1983-08-22 | 1983-08-22 | Discrimination of sheet paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58152820A JPS6045890A (en) | 1983-08-22 | 1983-08-22 | Discrimination of sheet paper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6045890A true JPS6045890A (en) | 1985-03-12 |
Family
ID=15548865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58152820A Pending JPS6045890A (en) | 1983-08-22 | 1983-08-22 | Discrimination of sheet paper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6045890A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8578603B2 (en) | 2010-02-18 | 2013-11-12 | Denso Corporation | Compressor and manufacturing method thereof |
-
1983
- 1983-08-22 JP JP58152820A patent/JPS6045890A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8578603B2 (en) | 2010-02-18 | 2013-11-12 | Denso Corporation | Compressor and manufacturing method thereof |
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