JPH0452517B2 - - Google Patents
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- Publication number
- JPH0452517B2 JPH0452517B2 JP59141054A JP14105484A JPH0452517B2 JP H0452517 B2 JPH0452517 B2 JP H0452517B2 JP 59141054 A JP59141054 A JP 59141054A JP 14105484 A JP14105484 A JP 14105484A JP H0452517 B2 JPH0452517 B2 JP H0452517B2
- Authority
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- Prior art keywords
- light
- coin
- dirt
- detection
- denomination
- 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 - Lifetime
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- 238000001514 detection method Methods 0.000 claims description 104
- 239000000428 dust Substances 0.000 claims description 47
- 230000003287 optical effect Effects 0.000 claims description 32
- 239000013307 optical fiber Substances 0.000 claims description 32
- 239000000463 material Substances 0.000 claims description 23
- 230000006870 function Effects 0.000 description 7
- 230000015654 memory Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000011109 contamination Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
Landscapes
- Testing Of Coins (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Description
〔発明の目的〕
（産業上の利用分野）
本発明は、銀行等の金融機関、スーパーマーケ
ツトおよび百貨店などで使用される硬貨の計数
機、選別計数機、入出金機等の硬貨処理機、或い
は自動釣銭補給式の自動販売機などにおいて、硬
貨表面の汚れを検知する硬貨の汚れ検知装置に関
する。
（従来の技術）
銀行等の金融機関、またはスーパーマーケツト
および百貨店において、硬貨を払出すときに、余
り汚れた硬貨を渡すと顧客に対して印象を悪くす
ることになるので、できるだけ汚れていないきれ
いな硬貨を渡すようにしている。
ところで、例えば特開昭56−33430号公報に記
載されているように、紙弊からの受光量を予め定
められた１つの汚れ判定基準レベルと比較し、紙
弊の汚れを検知する装置が提案されており、この
装置により汚れた紙弊の自動選別を行うようにし
ている。しかし、従来、硬貨の汚れ検知について
の提案はなく、汚れた硬貨の自動選別は行われて
いない。
したがつて、汚れた硬貨の選別は、係員の手作
業により、汚れている硬貨と汚れていない硬貨を
目で判別しながら行つていた。
（発明が解決しようとする問題点）
上述のように、従来は、汚れ硬貨を自動的に検
知する装置はなく、係員の手作業により汚れ硬貨
を選別していたので、手間および時間がかかり、
係員によつて硬貨が汚れているか否かの判断にば
らつきが生じる問題があつた。
また、前記公報に示されるような紙弊の汚れを
検知する装置を硬貨の汚れ検知に適用するとした
場合、硬貨では硬貨同士の接触や搬送通路との摩
擦によつて金属粉等の塵埃が多く発生し、この塵
埃がセンサの検出面に付着しやすいため、検出面
自体が汚れて検知能力の低下をもたらす問題が考
えられる。しかも、汚れを判定する汚れ判定基準
レベルが１つのみでは、検知を行つた硬貨の総枚
数に対して汚れ硬貨を検知する汚れ硬貨検知率を
利用者の要望によつて選択設定することができな
い。
本発明は、このような問題点に鑑みてなされた
もので、硬貨が搬送されてくるごとに硬貨の汚れ
を検出することができ、その硬貨の汚れを検出す
る検出面への塵埃の付着状態を検出して硬貨の汚
れの誤判別を確実に防止することができ、さら
に、利用者の要望する汚れ硬貨検知率に対して複
数の汚れ判定基準レベルにて柔軟に対応すること
ができる硬貨の汚れ検知装置を提供することを目
的とするものである。
〔発明の構成〕
（問題点を解決するための手段）
本発明は、光を発光する発光手段１５、この発
光手段１５の光を一端から入射し他端の発光端５
ａから搬送される硬貨Ｃに対し照射する発光用光
フアイバー５、この発光用光フアイバー５から照
射され硬貨Ｃにて反射した光を一端の受光端６ａ
から入射し他端に伝導する受光用光フアイバー
６、この受光用光フアイバー６の他端から放射さ
れる光を受光する受光手段１８を有し、硬貨Ｃの
表面に対向させて発光用光フアイバー５の発光端
５ａおよび受光用光フアイバー６の受光端６ａと
を一体的に構成した検出面８を設け、この検出面
８に透明板９を密着固定させてなる光学検出手段
２と、この光学検出手段２に対して硬貨搬送方向
の下両流側に設けられ、前記搬送される硬貨Ｃの
材質を検出する材質検出手段３と、前記光学検出
手段２が被識別硬貨Ｃの表面に対向しているとき
の前記材質検出手段３の出力レベル範囲の少なく
とも一部に対応する汚れ検出ゾーンａ〜ｂ、被識
別硬貨Ｃが光学検出手段２を通過したときの材質
検出手段３の出力レベル範囲の少なくとも一部に
対応するダスト検出ゾーンｃ〜ｄを硬貨の被識別
金種ごに予め記憶するゾーン記憶手段３２と、前
記光学検出手段２が硬貨Ｃから受光する受光量に
基づいて硬貨Ｃの汚れを判定するための通常の判
定基準であるノーマルレベル、このノーマルレベ
ルより判定基準を厳しくしたシビアレベルの少な
くとも２つ以上の汚れ定基準レベルを被識別金種
ごとに記憶する汚れ判定基準記憶手段３２と、前
記光学検出手段２が被識別硬貨Ｃの表面に対向し
ていないときに光学検出手段２が受光する受光量
に基づいて塵埃付着状態を判定するための塵埃付
着レベを記憶する塵埃付着基準記憶手段３２と、
汚れを判定する硬貨Ｃの金種を入力する金種指示
入力手段と、前記汚れ判定基準記憶手段３２に記
憶されているいずれかのレベルを選択指定する汚
れ判定基準指定手段と、前記金種指示入力手段に
より指示された金種に対応する前記ゾーン記憶手
段３２に記憶された汚れ検出ゾーンａ〜ｂ内に前
記材質検出手段３の出力があるときに、金種指示
入力手段により指示された金種および前記汚れ判
定基準指定手段により指定されたレベルに対応す
る前記汚れ判定基準記憶手段３２に記憶された汚
れ判定基準レベルと前記光学検出手段２が硬貨Ｃ
の反射光を受光した受光量とを比較して汚れを検
知する汚れ検知手段３１と、前記金種指示入力手
段により指示された金種に対応する前記ゾーン記
憶手段３２に記憶されたダスト検出ゾーンｃ〜ｄ
内に前記材質検出手段３の出力があるときに、前
記塵埃付着基準記憶手段３２に記憶された塵埃付
着レベルと前記光学検出手段２が受光する受光量
とを比較して塵埃付着状態を検知する塵埃付着検
知手段３１とを具備したものである。
（作用）
本発明では、硬貨Ｃの汚れ検知を行う前に、金
種指示入力手段にて汚れを判別する硬貨の金種を
指示入力するとともに、汚れ判定基準指定手段に
て汚れ判定基準レベルを指定する。これにより、
指示金種に対応する汚れ検出ゾーンａ〜ｂおよび
ダスト検出ゾーンｃ〜ｄが設定され、指示金種に
対応する指定汚れ判定基準レベルが設定される。
そして、被識別硬貨Ｃが光学検出手段２および
材質検出手段３の位置に搬送されてきて、光学検
出手段２が被識別硬貨Ｃの表面に対向し、材質検
出手段３の出力が指示金種に対応する汚れ検出ゾ
ーンａ〜ｂ内にあるときに、指示金種の指定され
た汚れ判定基準レベルと光学検出手段２が被識別
硬貨Ｃの表面からの反射光を受光した受光量とを
比較して汚れを検知する。
光学検出手段２を被識別硬貨Ｃが通過した直後
に、材質検出手段３の出力が指示金種に対応する
ダスト検出ゾーンｃ〜ｄ内にあるときに、塵埃付
着基準憶手段３２に記憶された塵埃付着レベルと
光学検出手段２が硬貨Ｃのない状態で受光する受
光量とを比較して、検出面８への塵埃付着状態を
検知する。
また、汚れ判定基準レベルは、各金種ごとにノ
ーマルレベルとシビアレベルの少なくとも２つ以
上有しているため、各金種ごとに確実に汚れを検
知可能となるとともに、利用者の要望する汚れ硬
貨検知率に対して柔軟に対応可能となる。
（実施例）
次に、本発明の一実施例の構成を第１図ないし
第７図を参照して説明する。
第１図および第２図において、１は例えば硬貨
計数機、選別計数機および入出金機等の硬貨処理
機の硬貨Ｃが搬送される硬貨通路で、この硬貨通
路１上に光学検出手段としての光学検出部２およ
び材質検出手段としての材質検出部３とが硬貨Ｃ
の搬送方向順にそれぞれ設けられている。
この光学検出部２は、一端から入射した光を他
端の発光端５ａから照射する発光用光フアイバー
５と、この発光用光フアイバー５の照射した光の
反射光を一端の受光端６ａから受光し他端から放
射する受光用光フアイバー６とを有している。こ
れらの発光および受光用光フアイバー５，６は、
複数本一体的に束ねられその発光端５ａおよび受
光端６ａの各端面を面一に合せて矩形枠状の支持
枠７に納め、第３図に示すような検出面８を構成
している。この検出面８は、受光用光フアイバー
６が支持枠７内の略全体に配置されるのに対し
て、発光用光フアイバー５は所定間隔毎に数列に
配列され（発光用光フアイバー５は太線にて示
す）、かつ、この検出面８には透明板９が密着固
定されている。また、この検出面８が臨む前記硬
貨通路１上には、発光用光フアイバー５から照射
される光が通過する挿通孔１０が開口形成されて
いる。
また、前記材質検出部３は磁気センサ１１を有
し、この磁気センサ１１は前記硬貨通路１に搬送
される硬貨Ｃの表裏面を挾むように略コ字状に設
けられている。そして、この磁気センサ１１の磁
気出力により磁気識別部１２から磁気信号を出力
して、後述する中央処理装置３１は汚れ検出ゾー
ンとダスト検出ゾーンを決定し、また、この磁気
信号に基づき、金種識別も行つて後述するランダ
ムアクセスメモリ３３の磁気金種メモリMDMに
金種信号を記憶させて指示された金種との照合を
行う。
前記発光用光フアイバー５の発光端５ａに対す
る他端には、発光手段１５が接続されている。こ
の発光手段１５は、例えば7000Lx程度の照度を
持つ小型の発光ランプ１６と、この発光ランプ１
６を点灯させる発光回路１７とからなつている。
前記受光用光フアイバー６の受光端６ａに対す
る他端には、受光手段１８が接続されている。こ
の受光手段１８は、検出用受光センサ１９により
受光用光フアイバー６から放射される反射光量を
検出し、検出用受光回路２０により電圧レベル信
号を出力し、A/Dコンバータ２１によりアナロ
グの電圧レベル信号を16進のデイジタル値に変換
した受光信号を出力する。
また、前記発光ランプ１６と発光用光フアイバ
ー５との間には赤外カツトフイルタ２２が介在さ
れ、発光ランプ１６から放射される光のうち赤外
光以上の波長（例えば700nm以上の波長）の光を
カツトし、前記受光センサ１９に対し硬貨Ｃの表
面の汚れ具合によつて反射光量の変化が出易い波
長の光のみを通過させる。
また、前記受光センサ１９と受光用光フアイバ
ー６との間にはイエローフイルタ２３が介在さ
れ、受光用光フアイバー６を伝導してきた反射光
のうち黄色系の光以下の波長（例えば500nm以下
の波長）の光をカツトし、硬貨Ｃの汚れが検出し
易い反射光のみを受光センサ１９に通過させる。
また、前記発光手段１５には発光用光フアイバ
ー５とともにモニター用光フアイバー２４の一端
が接続され、このモニター用光フアイバー２４の
他端にはモニター用受光手段２５が接続されてい
る。このモニター用受光手段２５は、前記発光ラ
ンプ１６が正常に発光しているか否かを判定する
ため発光ランプ１６の光量を検出するもので、前
記受光手段１８と同様に、モニター用光フアイバ
ー２４を伝導してきた光をイエローフイルタ２６
を通してモニター用受光センサ２７で検出し、モ
ニター用受光回路２８から出力される電圧レベル
信号をA/Dコンバータ２９でデイジタル値に変
換し、モニター受光信号を出力する。
次に、３１は硬貨処理機全体を制御する中央処
理装置（以下CPUと呼ぶ）で、このCPU３１に
は、ゾーン記憶手段、汚れ判定基準記憶手段およ
び塵埃付着基準記憶手段の機能を有するリードオ
ンリーメモリ３２（以下ROMと呼ぶ）と、ラン
ダムアクセスメモリ３３（以下RAMと呼ぶ）と
が接続されている。
CPU３１は前記発光回路１１を制御して発光
ランプ１６を点灯制御し、一方、CPU３１に前
記磁気識別部１２から磁気信号および前記A/D
コンバータ２１，２９から各受光信号がそれぞれ
入力される。
また、CPU３１は、図示しない金種指示入力
手段により指示された金種に対応するゾーン記憶
手段（ROM３２）に記憶された汚れ検出ゾーン
ａ〜ｂ（後述する）内に材質検出手段（磁気識別
部１２）の出力があるときに、金種指示入力手段
により指示された金種および図示しない汚れ判定
基準指定手段により指定されたレベルに対応する
汚れ判定基準記憶手段（ROM３２）に記憶され
た汚れ判定基準レベルと光学検出手段（受光手段
１８）が硬貨Ｃの反射光を受光した受光量とを比
較して汚れを検知する汚れ検知手段の機能と、金
種指示入力手段により指示された金種に対応する
ゾーン記憶手段（ROM３２）に記憶されたダス
ト検出ゾーンｃ〜ｄ（後述する）内に材質検出手
段（磁気識別部１２）の出力があるときに、塵埃
付着基準記憶手段（ROM３２）に記憶された塵
埃看付着レベルと光学検出手段（受光手段１８）
が受光する受光量とを比較して塵埃付着状態を検
知する塵埃付着検知手段の機能とを備えている。
ROM３２は、制御プログラムを記憶するとと
もに、後述する表１の汚れ検出ゾーンａ〜ｂおよ
びダスト検出ゾーンｃ〜ｄのゾーン判定レベル、
表２の汚れ判定基準レル、塵埃付着状態を判定す
るための塵埃付着レベルをそれぞれ記憶する。
RAM３３は、少なくとも第４図に示すような
各種のフラグ、メモリ、カウンターを有してい
る。
また、CPU３１には、硬貨処理部３４および
表示部３５も接続されている。この硬貨処理部３
４は、前記硬貨通路１に硬貨Ｃを１枚ずつ搬送す
る。表示部３５は、少なくとも汚れ・塵埃付着・
光量不足等の異常時の表示を行い、さらに、硬貨
計数枚数表示・金種別選別機能を有する場合は金
種別枚数等の表示も行う。また、正常硬貨と汚れ
硬貨とを分けてそれぞれ枚数を表示させてもよ
い。
次に、本実施例の作用について説明する。
第５図において、磁気識別部１２からCPU３
１に入力された磁気信号はａ，ｂ，ｃ，ｄの点に
分けられ、ａ〜ｂ間を汚れ検出ゾーン、ｃ〜ｄ間
をダスト検出ゾーンとしている。なお、このダス
トとは、検出面８に付着て光学検出部２の検知能
力を低下させる塵埃、汚れ等のことを意味する。
そして、この各ゾーンを決定するａ，ｂ，ｃ，ｄ
のレベルは、金種毎に異なり、ゾーン記憶手段と
してのROM３２にそれぞれ記憶されている。こ
のROM３２に記憶されたレベルを、次の表１の
ゾーン判定表に示す。
[Purpose of the Invention] (Field of Industrial Application) The present invention is applicable to coin processing machines such as coin counting machines, sorting counters, and deposit/withdrawal machines used in financial institutions such as banks, supermarkets, department stores, etc. The present invention relates to a coin dirt detection device for detecting dirt on the surface of coins in automatic change replenishing vending machines and the like. (Prior art) When dispensing coins at financial institutions such as banks, supermarkets, and department stores, handing out too many dirty coins will give a bad impression to customers, so it is best to use clean, clean coins as much as possible. I try to give them coins. By the way, for example, as described in Japanese Patent Application Laid-Open No. 56-33430, a device has been proposed that detects stains on paper by comparing the amount of light received from the paper with a predetermined stain determination reference level. This device automatically sorts out dirty paper. However, until now, there has been no proposal for detecting dirt on coins, and automatic sorting of dirty coins has not been carried out. Therefore, the sorting of dirty coins was carried out manually by the clerk, visually distinguishing between dirty and clean coins. (Problems to be Solved by the Invention) As mentioned above, in the past, there was no device to automatically detect dirty coins, and the dirty coins had to be manually sorted by staff, which took time and effort.
There was a problem in which the judgment of whether a coin was dirty or not varied depending on the clerk. In addition, if the device for detecting dirt on paper as shown in the above publication is applied to detect dirt on coins, the coins will collect a lot of dust such as metal powder due to contact between coins and friction with the conveyance path. This dust is likely to adhere to the detection surface of the sensor, which may cause the detection surface itself to become dirty, resulting in a decrease in detection ability. Furthermore, if there is only one dirt judgment standard level for judging dirt, the user cannot select and set the dirt coin detection rate for detecting dirt coins based on the total number of coins detected. . The present invention was made in view of these problems, and is capable of detecting dirt on a coin each time it is transported, and detecting the state of dust adhering to the detection surface for detecting dirt on the coin. It is possible to reliably prevent misjudgment of dirt on coins by detecting dirt, and furthermore, it is possible to flexibly respond to the user's desired dirt detection rate by using multiple dirt judgment criteria levels. The object of the present invention is to provide a dirt detection device. [Structure of the Invention] (Means for Solving the Problems) The present invention includes a light emitting means 15 that emits light, the light of the light emitting means 15 entering from one end, and the light emitting end 5 at the other end.
A light emitting optical fiber 5 irradiates the coin C conveyed from the light emitting fiber 5, and a light receiving end 6a at one end receives the light irradiated from the light emitting optical fiber 5 and reflected by the coin C.
A light-receiving optical fiber 6 that enters the light-receiving optical fiber 6 and conducts it to the other end, and a light-receiving means 18 that receives light emitted from the other end of the light-receiving optical fiber 6. 5 and the light receiving end 6a of the light receiving optical fiber 6 are provided, and a transparent plate 9 is closely fixed to the detection surface 8. A material detecting means 3 is provided on both downstream sides of the coin conveying direction with respect to the detecting means 2, and detects the material of the coin C being conveyed, and the optical detecting means 2 is arranged so as to face the surface of the coin C to be identified. dirt detection zones a to b corresponding to at least a part of the output level range of the material detection means 3 when the coin C passes through the optical detection means 2; A zone storage means 32 stores in advance dust detection zones c to d corresponding to at least a part of each denomination of the coin, and the optical detection means 2 detects dirt on the coin C based on the amount of light received from the coin C. Contamination determination standard storage means 32 that stores at least two contamination standard levels for each denomination to be identified, including a normal level, which is a normal determination standard for determining the denomination, and a severe level, which has stricter determination criteria than the normal level. and a dust adhesion standard for storing a dust adhesion level for determining a dust adhesion state based on the amount of light received by the optical detection means 2 when the optical detection means 2 is not facing the surface of the coin C to be identified. storage means 32;
a denomination instruction input means for inputting the denomination of the coin C whose dirt is to be determined; a stain determination criterion designating means for selecting and specifying one of the levels stored in the stain determination criterion storage means 32; When the output of the material detection means 3 is within the dirt detection zones a to b stored in the zone storage means 32 corresponding to the denomination designated by the input means, the denomination designated by the denomination instruction input means Coin C
a dirt detection means 31 for detecting dirt by comparing the amount of received light reflected by the received light; and a dust detection zone stored in the zone storage means 32 corresponding to the denomination designated by the denomination instruction input means. c～d
When there is an output of the material detecting means 3 within, the dust adhesion state is detected by comparing the dust adhesion level stored in the dust adhesion reference storage means 32 and the amount of light received by the optical detecting means 2. It is equipped with a dust adhesion detection means 31. (Function) In the present invention, before detecting the dirt on the coin C, the denomination of the coin whose dirt is to be determined is input using the denomination instruction input means, and the dirt judgment reference level is input using the dirt judgment reference specifying means. specify. This results in
Dirt detection zones a to b and dust detection zones c to d corresponding to the designated denomination are set, and a designated stain determination reference level corresponding to the designated denomination is set. Then, the coin C to be identified is conveyed to the position of the optical detection means 2 and the material detection means 3, the optical detection means 2 faces the surface of the coin C to be identified, and the output of the material detection means 3 corresponds to the designated denomination. When the coin is within the corresponding stain detection zones a to b, the optical detection means 2 compares the specified stain determination reference level of the designated denomination with the amount of light received by the optical detection means 2 of the reflected light from the surface of the coin to be identified C. to detect dirt. Immediately after the coin C to be identified passes through the optical detection means 2, when the output of the material detection means 3 is within the dust detection zone c to d corresponding to the designated denomination, the dust adhesion standard storage means 32 stores it. The level of dust adhesion is compared with the amount of light received by the optical detection means 2 in the absence of the coin C, and the state of dust adhesion to the detection surface 8 is detected. In addition, each denomination has at least two dirt determination standard levels, a normal level and a severe level, so it is possible to reliably detect dirt for each denomination, and it is also possible to detect dirt according to the user's needs. It becomes possible to respond flexibly to the coin detection rate. (Embodiment) Next, the configuration of an embodiment of the present invention will be described with reference to FIGS. 1 to 7. In FIGS. 1 and 2, reference numeral 1 denotes a coin passage through which coins C of a coin processing machine such as a coin counting machine, sorting/counting machine, deposit/dispensing machine, etc. are conveyed. The optical detection section 2 and the material detection section 3 as material detection means are used to detect the coin C.
are provided in the order of the transport direction. The optical detection unit 2 includes a light-emitting optical fiber 5 that emits light incident from one end from a light-emitting end 5a at the other end, and receives reflected light of the light emitted by the light-emitting optical fiber 5 from a light-receiving end 6a at one end. and an optical fiber 6 for receiving light emitted from the other end. These light emitting and light receiving optical fibers 5 and 6 are
A plurality of them are bundled together and housed in a rectangular frame-shaped support frame 7 with the respective end faces of the light emitting end 5a and the light receiving end 6a flush with each other to form a detection surface 8 as shown in FIG. In this detection surface 8, the light-receiving optical fibers 6 are arranged almost entirely within the support frame 7, whereas the light-emitting optical fibers 5 are arranged in several rows at predetermined intervals (the light-emitting optical fibers 5 are shown in bold lines). ), and a transparent plate 9 is tightly fixed to this detection surface 8. Further, an insertion hole 10 through which light emitted from the light-emitting optical fiber 5 passes is formed on the coin passage 1 which the detection surface 8 faces. Further, the material detecting section 3 has a magnetic sensor 11, and the magnetic sensor 11 is provided in a substantially U-shape so as to sandwich the front and back surfaces of the coin C conveyed to the coin passage 1. Then, a magnetic signal is output from the magnetic identification unit 12 based on the magnetic output of the magnetic sensor 11, and the central processing unit 31, which will be described later, determines the dirt detection zone and the dust detection zone. After identification, the denomination signal is stored in the magnetic denomination memory MDM of the random access memory 33, which will be described later, and is compared with the designated denomination. A light emitting means 15 is connected to the other end of the light emitting optical fiber 5 to the light emitting end 5a. This light emitting means 15 includes a small light emitting lamp 16 having an illuminance of about 7000Lx, and this light emitting lamp 1.
6 and a light emitting circuit 17 that lights up the light. A light receiving means 18 is connected to the other end of the light receiving optical fiber 6 to the light receiving end 6a. The light receiving means 18 detects the amount of reflected light emitted from the light receiving optical fiber 6 by a detection light receiving sensor 19, outputs a voltage level signal by a detection light receiving circuit 20, and outputs an analog voltage level signal by an A/D converter 21. Outputs the received light signal by converting the signal into a hexadecimal digital value. Further, an infrared cut filter 22 is interposed between the light emitting lamp 16 and the light emitting optical fiber 5, and among the light emitted from the light emitting lamp 16, light having a wavelength of infrared light or more (for example, a wavelength of 700 nm or more) is cut off, and only light of a wavelength whose amount of reflected light is likely to change depending on the degree of dirt on the surface of the coin C is passed through the light receiving sensor 19. Further, a yellow filter 23 is interposed between the light receiving sensor 19 and the light receiving optical fiber 6, and among the reflected light transmitted through the light receiving optical fiber 6, a wavelength of yellow light or less (for example, a wavelength of 500 nm or less) is provided. ), and only the reflected light that can easily detect dirt on the coin C is allowed to pass through the light receiving sensor 19. Further, one end of a monitor optical fiber 24 is connected to the light emitting means 15 together with the light emitting optical fiber 5, and a monitor light receiving means 25 is connected to the other end of the monitor optical fiber 24. This monitoring light receiving means 25 detects the amount of light from the light emitting lamp 16 in order to determine whether or not the light emitting lamp 16 is emitting light normally.Similarly to the light receiving means 18, the monitoring optical fiber 24 is Yellow filter 26 filters the transmitted light.
The monitor light receiving sensor 27 detects the voltage level signal through the monitor light receiving sensor 27, and the voltage level signal output from the monitoring light receiving circuit 28 is converted into a digital value by the A/D converter 29, and the monitor light receiving signal is output. Next, 31 is a central processing unit (hereinafter referred to as CPU) that controls the entire coin processing machine, and this CPU 31 has a read-only memory that has the functions of zone storage means, dirt judgment standard storage means, and dust adhesion standard storage means. 32 (hereinafter referred to as ROM) and a random access memory 33 (hereinafter referred to as RAM) are connected. The CPU 31 controls the light emitting circuit 11 to control the lighting of the light emitting lamp 16. Meanwhile, the CPU 31 receives a magnetic signal from the magnetic identification section 12 and the A/D
Each light reception signal is input from converters 21 and 29, respectively. Further, the CPU 31 selects a material detecting means (magnetic identification section) within dirt detection zones a to b (described later) stored in the zone storage means (ROM 32) corresponding to the denomination designated by the denomination instruction input means (not shown). 12), the stain judgment stored in the stain judgment standard storage means (ROM 32) corresponding to the denomination specified by the denomination instruction input means and the level specified by the stain judgment standard specification means (not shown). The function of the dirt detection means to detect dirt by comparing the reference level and the amount of light received by the optical detection means (light receiving means 18) of the reflected light of the coin C, and the function of the dirt detection means to detect dirt by comparing the amount of light received by the optical detection means (light receiving means 18) with the amount of light received by the optical detection means (light receiving means 18). When there is an output from the material detection means (magnetic identification section 12) in dust detection zones c to d (described later) stored in the corresponding zone storage means (ROM 32), the dust adhesion standard storage means (ROM 32) stores Detection of dust adhesion level and optical detection means (light receiving means 18)
It also has the function of a dust adhesion detection means for detecting the state of dust adhesion by comparing the amount of light received by the sensor. The ROM 32 stores a control program, and zone determination levels of dirt detection zones a to b and dust detection zones c to d in Table 1, which will be described later.
The dirt determination reference level in Table 2 and the dust adhesion level for determining the dust adhesion state are respectively stored. The RAM 33 includes at least various flags, memories, and counters as shown in FIG. Further, a coin processing section 34 and a display section 35 are also connected to the CPU 31. This coin processing section 3
4 conveys the coins C one by one to the coin passage 1. The display section 35 is free from at least dirt, dust,
Displays in the event of an abnormality such as insufficient light, and also displays the number of coins by denomination if it has the function of displaying the number of coins counted and sorting by denomination. Alternatively, the number of normal coins and dirty coins may be displayed separately. Next, the operation of this embodiment will be explained. In FIG. 5, from the magnetic identification section 12 to the CPU 3
The magnetic signal inputted to 1 is divided into points a, b, c, and d, with the area between a and b serving as a dirt detection zone, and the area between c and d serving as a dust detection zone. Note that this dust refers to dust, dirt, etc. that adhere to the detection surface 8 and reduce the detection ability of the optical detection section 2.
Then, a, b, c, d to determine each zone.
The level differs for each denomination and is stored in the ROM 32 as zone storage means. The levels stored in this ROM 32 are shown in the zone determination table of Table 1 below.
【表】
そして、汚れ検出ゾーンのａレベル（例えば10
円貨の場合は５レベル）に磁気信号が達すると、
このａレベルのt1に対する受光手段１８からの受
光信号のx1のレベルを検出し、さらにこのx1のレ
ベルを検出した後、t2に対するx2，t3に対するx3
というように磁気信号がｂレベル（例えば10円貨
の場合15レベル）に達するまで所定時間間隔で受
光信号の数個所のレベルを検出する。そして、
CPU３１により、これらの受光信号の出レベル
を検出毎に予じめ設定されている汚れ判定基準レ
ベルと比較し、硬貨Ｃの汚れ具合を判定する。
この汚れ判定基準レベルは、金種毎に異なると
ともに各金種毎に複数種類あり、汚れ判定基準記
憶手段としてのROM３２にそれぞれ記憶されて
いる。そして、このROM３２に記憶された汚れ
判定基準レベルを、次の表２の汚れ判定表に示
す。[Table] Then, the A level of the dirt detection zone (for example, 10
When the magnetic signal reaches level 5 (for yen coins),
After detecting the level of x 1 of the light reception signal from the light receiving means 18 for t 1 of this a level, and further detecting the level of x 1 , x 2 for t 2 and x 3 for t 3
In this way, the levels of the light reception signal at several points are detected at predetermined time intervals until the magnetic signal reaches level b (for example, level 15 in the case of a 10 yen coin). and,
The CPU 31 compares the output levels of these light reception signals with a dirt determination reference level set in advance for each detection, and determines the degree of dirt on the coin C. This stain determination reference level differs for each denomination, and there are a plurality of types for each denomination, and these are stored in the ROM 32 as stain determination standard storage means. The dirt judgment reference levels stored in this ROM 32 are shown in the dirt judgment table in Table 2 below.
本発明によれば、硬貨が搬送されてくるごとに
硬貨表面の反射光を受光することにより硬貨の汚
れを検出し、硬貨が光学検出手段を通過した直後
に硬貨のない状態で受光量を検出して塵埃付着の
状態を検出することができる。特に、汚れた硬貨
が通過すると、光学検出手段の光学系に塵埃が付
着し、それ以後の判別に悪影響を及ぼすため、硬
貨の通過直後に塵埃付着状態を検出することによ
り確実に誤判別を防止することができる。
また、金種ごとに塵埃付着状態を検出するタイ
ミングを材質検出手段と光学検出手段との配置状
態および材質検出手段の出力レベルによるタイミ
ング（ダスト検出ゾーンによつて各金種ごとに適
切な時期に行い得るので、より確実に塵埃付着状
態の検出が可能である。
さらに、硬貨の汚れの検出も各金種ごとにノー
マルレベルとシビアレベルの少なくとも２つ以上
の汚れ判定基準レベルを有しているので、各金種
ごとに確実に汚れを検出することができるととも
に、利用者の要望する汚れ硬貨検知率に対して複
数の汚れ判定基準レベルにて複数の基準にて柔軟
に対応することができる。
According to the present invention, dirt on the coin is detected by receiving reflected light from the surface of the coin each time the coin is transported, and the amount of received light is detected immediately after the coin passes the optical detection means without the coin. It is possible to detect the state of dust adhesion. In particular, when a dirty coin passes, dust adheres to the optical system of the optical detection means and has a negative effect on subsequent discrimination, so by detecting dust adhesion immediately after the coin passes, misjudgment can be reliably prevented. can do. In addition, the timing for detecting the state of dust adhesion for each denomination is determined by the arrangement of the material detection means and the optical detection means and the output level of the material detection means. Therefore, it is possible to detect dust adhesion more reliably.Furthermore, each denomination has at least two dirt determination standard levels, normal level and severe level, for detecting dirt on coins. Therefore, it is possible to reliably detect dirt for each denomination, and it is also possible to flexibly respond to the user's desired dirt coin detection rate using multiple dirt judgment criteria levels and multiple criteria. .
第１図は本発明の硬貨の汚れ検知装置の一実施
例を示す構成図、第２図は一部の斜視図、第３図
はその検出面の正面図、第４図はそのランダムア
クセスメモリの内容を示す説明図、第５図はその
各信号の波形図、第６図は一部の断面図、第７図
はそのフローチヤート図、第８図および第９図は
検出面の他の実施例を示す正面図、第１０図は本
発明の装置の光学検出部の他の実施例を示す縦断
面図である。
２…光学検出手段としての光学検出部、３…材
質検出手段としての材質検出部、５…発光用光フ
アイバー、５ａ…発光端、６…受光用光フアイバ
ー、６ａ…受光端、８…検出面、９…透明板、１
５…発光手段、１８…受光手段、３１…汚れ検知
手段の機能および塵埃付着検知手段の機能を有す
る中央処理装置（CPU）、３２…ゾーン記憶手
段、汚れ判定基準記憶手段および塵埃付着基準記
憶手段としてのリードオンリーメモリ（ROM）、
Ｃ…硬貨。
Fig. 1 is a block diagram showing one embodiment of the coin dirt detection device of the present invention, Fig. 2 is a partial perspective view, Fig. 3 is a front view of its detection surface, and Fig. 4 is its random access memory. Fig. 5 is a waveform diagram of each signal, Fig. 6 is a cross-sectional view of a part of it, Fig. 7 is a flowchart thereof, and Figs. 8 and 9 are other diagrams of the detection surface. FIG. 10 is a front view showing an embodiment, and FIG. 10 is a longitudinal sectional view showing another embodiment of the optical detection section of the apparatus of the present invention. 2... Optical detection section as optical detection means, 3... Material detection section as material detection means, 5... Optical fiber for light emission, 5a... Light emitting end, 6... Optical fiber for light reception, 6a... Light receiving end, 8... Detection surface , 9...transparent plate, 1
5...Light emitting means, 18...Light receiving means, 31...Central processing unit (CPU) having the function of dirt detection means and dust adhesion detection means, 32...Zone storage means, dirt judgment criterion storage means, and dust adhesion criterion storage means Read-only memory (ROM), as
C...coin.
Claims (1)
一端から入射し他端の発光端から搬送される硬貨
に対し照射する発光用光フアイバー、この発光用
光フアイバーから照射され硬貨にて反射した光を
一端の受光端から入射し他端に伝導する受光用光
フアイバー、この受光用光フアイバーの他端から
放射される光を受光する受光手段を有し、硬貨の
表面に対向させて発光用光フアイバーの発光端お
よび受光用光フアイバーの受光端とを一体的に構
成した検出面を設け、この検出面に透明板を密着
固定させてなる光学検出手段と、 この光学検出手段に対して硬貨搬送方向の下流
側に設けられ、前記搬送される硬貨の材質を検出
する材質検出手段と、 前記光学検出手段が被識別硬貨表面に対向して
いるときの前記材質検出手段の出力レベル範囲の
少なくとも一部に対応する汚れ検出ゾーン、被識
別硬貨が光学検出手段を通過したときの材質検出
手段の出力レベル範囲の少なくとも一部に対応す
るダスト検出ゾーンを硬貨の被識別金種ごとに予
め記憶するゾーン記憶手段と、 前記光学検出手段が硬貨から受光する受光量に
基づいて硬貨の汚れを判定するための通常の判定
基準であるノーマルレベル、このノーマルレベル
より判定基準を厳しくしたシビアレベルの少なく
とも２つ以上の汚れ判定基準レベルを被識別金種
ごとに記憶する汚れ判定基準記憶手段と、 前記光学検出手段が被識別硬貨表面に対向して
いないときに光学検出手段が受光する受光量に基
づいて塵埃付着状態を判定するための塵埃付着レ
ベルを記憶する塵埃付着基準記憶手段と、 汚れを判定する硬貨の金種を入力する金種指示
入力手段と、 前記汚れ判定基準記憶手段に記憶されているい
ずれかのレベルを選択指定する汚れ判定基準指定
手段と、 前記金種指示入力手段により指示された金種に
対応する前記ゾーン記憶手段に記憶された汚れ検
出ゾーン内に前記材質検出手段の出力があるとき
に、金種指示入力手段により指示された金種およ
び前記汚れ判定基準指定手段により指定されたレ
ベルに対応する前記汚れ判定基準記憶手段に記憶
された汚れ判定基準レベルと前記光学検出手段が
硬貨の反射光を受光した受光量とを比較して汚れ
を検知する汚れ検知手段と、 前記金種指示入力手段により指示された金種に
対応する前記ゾーン記憶手段に記憶されたダスト
検出ゾーン内に前記材質検出手段の出力があると
きに、前記塵埃付着基準記憶手段に記憶された塵
埃付着レベルと前記光学検出手段が受光する受光
量とを比較して塵埃付着状態を検知する塵埃付着
検知手段と を具備したことを特徴とする硬貨の汚れ検知装
置。[Scope of Claims] 1. A light-emitting means for emitting light, a light-emitting optical fiber that enters the light of the light-emitting means from one end and irradiates the coin conveyed from the other light-emitting end, and irradiation from the light-emitting optical fiber. A light-receiving optical fiber enters the light reflected by the coin from one light-receiving end and transmits it to the other end, and a light-receiving means receives the light emitted from the other end of the light-receiving optical fiber. an optical detection means comprising: a detection surface integrally configured with a light emitting end of a light emitting optical fiber and a light receiving end of a light receiving optical fiber; a material detection means that is provided on the downstream side of the coin transport direction with respect to the detection means and detects the material of the transported coin; and a material detection means when the optical detection means faces the surface of the coin to be identified. a dirt detection zone corresponding to at least part of the output level range of the coin to be identified, and a dust detection zone corresponding to at least part of the output level range of the material detection means when the coin to be identified passes through the optical detection means; a zone storage means for storing each species in advance; and a normal level, which is a normal judgment standard for judging dirt on a coin based on the amount of light received by the optical detection means from the coin, and a judgment standard stricter than this normal level. a dirt judgment criterion storage means for storing at least two or more dirt judgment criterion levels of severe levels determined for each denomination to be identified; a dust adhesion standard storage means for storing a dust adhesion level for determining a dust adhesion state based on the amount of light received; a denomination instruction input means for inputting the denomination of a coin to be judged as dirty; and the dirt judgment standard storage. a dirt detection criterion specifying means for selecting and specifying one of the levels stored in the means; When there is an output from the material detecting means, the stain judgment standard level stored in the stain judgment standard storage means corresponds to the denomination specified by the denomination instruction input means and the level specified by the stain judgment standard designation means. and dirt detection means for detecting dirt by comparing the amount of light received by the optical detection means with the amount of light reflected from the coin; and a zone storing means corresponding to the denomination designated by the denomination instruction input means. When the output of the material detection means is within the dust detection zone, the dust adhesion state is determined by comparing the dust adhesion level stored in the dust adhesion reference storage means and the amount of light received by the optical detection means. A coin dirt detection device characterized by comprising a dust adhesion detection means for detecting dirt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14105484A JPS6118844A (en) | 1984-07-06 | 1984-07-06 | Apparatus for detecting contamination of circular article such as coin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14105484A JPS6118844A (en) | 1984-07-06 | 1984-07-06 | Apparatus for detecting contamination of circular article such as coin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6118844A JPS6118844A (en) | 1986-01-27 |
| JPH0452517B2 true JPH0452517B2 (en) | 1992-08-24 |
Family
ID=15283178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14105484A Granted JPS6118844A (en) | 1984-07-06 | 1984-07-06 | Apparatus for detecting contamination of circular article such as coin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6118844A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04127564U (en) * | 1991-05-13 | 1992-11-20 | 和泉電気株式会社 | defect detector |
| JPH04335145A (en) * | 1991-05-13 | 1992-11-24 | Idec Izumi Corp | Sheet material defect detector |
| JP2006268482A (en) * | 2005-03-24 | 2006-10-05 | Glory Ltd | Coin discriminating device |
| JP2012242711A (en) * | 2011-05-23 | 2012-12-10 | Ricoh Co Ltd | Method for manufacturing toner |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5633530A (en) * | 1979-08-14 | 1981-04-04 | Gao Ges Automation Org | Method of inspecting state of paper money or like |
-
1984
- 1984-07-06 JP JP14105484A patent/JPS6118844A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5633530A (en) * | 1979-08-14 | 1981-04-04 | Gao Ges Automation Org | Method of inspecting state of paper money or like |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6118844A (en) | 1986-01-27 |
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| LAPS | Cancellation because of no payment of annual fees |