JPH069106A - Double feeding detecting circuit for paper sheet, etc. - Google Patents
Double feeding detecting circuit for paper sheet, etc.Info
- Publication number
- JPH069106A JPH069106A JP16810992A JP16810992A JPH069106A JP H069106 A JPH069106 A JP H069106A JP 16810992 A JP16810992 A JP 16810992A JP 16810992 A JP16810992 A JP 16810992A JP H069106 A JPH069106 A JP H069106A
- Authority
- JP
- Japan
- Prior art keywords
- value
- luminous energy
- value information
- paper
- document
- 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.)
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Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は紙葉類の重送検出回路に
関し、特にOCR(光学的文字読取装置)の帳票搬送に
おける紙葉類の重送検出回路に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet double feed detection circuit, and more particularly to a sheet double feed detection circuit in OCR (optical character reading device) document conveyance.
【0002】[0002]
【従来の技術】図3は従来の紙葉類の重送検出回路の一
例を示すブロック図である。2. Description of the Related Art FIG. 3 is a block diagram showing an example of a conventional double feed detection circuit for paper sheets.
【0003】本例の光学的文字読取装置における重送検
出回路は帳票の用紙透過光量を測定した後に光電変換す
る透過光量測定部1と、その測定電圧を調整する可変抵
抗器11を付加した増幅器2とを備えている。測定され
た透過光量値は次に基準値設定部6に設定されたアナロ
グ/デジタル変換(以下A/D変換)基準値によりA/
D変換部7にて電気信号変換される。The double feed detection circuit in the optical character reader of this embodiment is an amplifier having a transmitted light amount measuring unit 1 for photoelectrically converting the amount of transmitted light on a sheet of paper and a variable resistor 11 for adjusting the measured voltage. 2 and. The measured amount of transmitted light is then A / D based on the analog / digital conversion (hereinafter A / D conversion) reference value set in the reference value setting unit 6.
An electric signal is converted by the D converter 7.
【0004】搬送制御部8はA/D変換部7の変換出力
値を用紙厚値情報として参照する。この時、増幅器2で
は事前に用紙厚が定義された定型帳票(調整帳票)を搬
送することにより得られる用紙厚値情報が規定の値とな
るように可変抵抗器11によって調整されている。用紙
厚記憶部9には帳票重送時の用紙厚情報(重送値情報)
が蓄えられている。帳票重送の有無は搬送制御部8が重
送値情報とA/D変換部7から出力される用紙厚情報と
を比較して演算することにより判定処理される。The transport controller 8 refers to the converted output value of the A / D converter 7 as paper thickness value information. At this time, in the amplifier 2, the variable resistor 11 is adjusted so that the paper thickness value information obtained by conveying the standard form (adjustment form) in which the paper thickness is defined in advance becomes a specified value. The paper thickness storage unit 9 stores paper thickness information (double feed value information) at the time of double feeding of documents.
Is stored. The presence / absence of double-feeding of documents is determined by the conveyance control unit 8 by comparing and calculating the double-feed value information and the sheet thickness information output from the A / D conversion unit 7.
【0005】[0005]
【発明が解決しようとする課題】この従来の光学的文字
読取装置における重送検出回路では、回路使用部品の特
性偏差,経時変動,周囲環境状況により透過光量測定値
が変動するので、運用前に調整帳票を用いた可変抵抗器
による調整が必要となる。In the double feed detection circuit in the conventional optical character reading device, the transmitted light amount measurement value fluctuates due to the characteristic deviation of circuit components, the temporal change, and the ambient environment. Adjustment with a variable resistor using an adjustment form is required.
【0006】また、重送の有無を検出するには、予め登
録された重送値情報と実際に測定された用紙厚値情報を
それぞれ参照,比較演算するという煩雑な処理をしなけ
ればらなないという問題点がある。Further, in order to detect the presence / absence of double feed, it is necessary to perform a complicated process of referring to and comparing the previously registered double feed value information and the actually measured sheet thickness value information, respectively. There is a problem.
【0007】[0007]
【課題を解決するための手段】本発明の紙葉類の重送検
出回路は、紙葉類を搬送する搬送経路上のセンサが用紙
の無い状態で測定する用紙透過光量値情報を蓄える白基
準記憶部と、前記紙葉類の搬送時に電気信号変換処理に
使用される基準値を演算する基準値補正部とを備えてい
る。SUMMARY OF THE INVENTION A double-feed detection circuit for paper sheets according to the present invention is a white reference for storing paper-transmitted light quantity value information measured by a sensor on a conveyance path for conveying paper sheets in the absence of paper. The storage unit includes a storage unit and a reference value correction unit that calculates a reference value used for an electric signal conversion process when the paper sheet is conveyed.
【0008】そして、用紙透過光量値により重送の有無
を検出する重送判定部を付加してもよい。Then, a double feed determining section for detecting the presence or absence of double feed based on the value of the amount of light transmitted through the paper may be added.
【0009】[0009]
【実施例】次に本発明について図面を参照して説明す
る。図1,図2は本発明の紙葉類の重送検出回路の第
1,第2の実施例を示すブロック図である。The present invention will be described below with reference to the drawings. 1 and 2 are block diagrams showing first and second embodiments of a double feed detection circuit for paper sheets according to the present invention.
【0010】第1の実施例では、透過光量測定部1は搬
送された帳票の用紙透過光量を測定した後に測定値を光
電変換する。増幅器2は付加された固定抵抗器3により
その測定値電圧を一定の倍率で電圧変換する。白基準記
憶部4は事前に帳票無搬送時(帳票無しの状態)の用紙
透過光量値情報(白基準情報)を蓄える。基準値補正部
5は白基準記憶部4からの白基準情報と搬送制御部8か
ら定義される帳票の用紙厚に応じた用紙透過光量値情報
とを比較演算する。In the first embodiment, the transmitted light amount measuring unit 1 photoelectrically converts the measured value after measuring the sheet transmitted light amount of the conveyed form. The amplifier 2 converts the measured value voltage into a voltage by a fixed factor by the added fixed resistor 3. The white reference storage unit 4 stores in advance the sheet transmitted light amount value information (white reference information) when the form is not conveyed (state where the form is not present). The reference value correction unit 5 compares the white reference information from the white reference storage unit 4 with the sheet transmitted light amount value information according to the sheet thickness of the form defined by the transport control unit 8.
【0011】また、基準値補正部5はその演算結果を白
基準変動分とし、基準値設定部6に設定されたA/D変
換基準値の補正を行ってA/D変換部7へ出力する。A
/D変換部7は補正されたA/D変換基準値から搬送帳
票の透過光量測定値を電気信号に変換し、用紙厚値情報
として出力する。搬送制御部8はこの用紙厚値情報と用
紙厚記憶部9に蓄えられている重送値情報を比較演算し
て帳票の重送検出処理を行う。Further, the reference value correction unit 5 uses the calculated result as the white reference variation amount, corrects the A / D conversion reference value set in the reference value setting unit 6, and outputs it to the A / D conversion unit 7. . A
The / D conversion unit 7 converts the transmitted light amount measurement value of the transport form into an electric signal from the corrected A / D conversion reference value and outputs it as paper thickness value information. The conveyance control unit 8 compares and calculates the paper thickness value information and the multi-feed value information stored in the paper thickness storage unit 9 to perform the multi-feed detection process of the form.
【0012】次に第2の実施例では、第1の実施例の回
路構成に重送判定部10を付加した構成となっている。Next, the second embodiment has a configuration in which the double feed determining section 10 is added to the circuit configuration of the first embodiment.
【0013】まず、帳票が搬送されると前述した第1の
実施例における手順と同様の手順によって帳票の透過光
量が測定され、用紙厚値情報がA/D変換部7から出力
される。重送判定部10はこの用紙厚値情報の入力と同
期して用紙厚記憶部9から読み出した重送値情報を参照
し、この比較結果から直ちに重送有無の判定情報を搬送
制御部8へ出力する。First, when the form is conveyed, the amount of transmitted light of the form is measured by a procedure similar to the procedure in the first embodiment described above, and the paper thickness value information is output from the A / D converter 7. The multi-feed determination unit 10 refers to the multi-feed value information read from the paper thickness storage unit 9 in synchronization with the input of the paper thickness value information, and immediately outputs the determination information of the presence or absence of the multi-feed to the conveyance control unit 8 from the comparison result. Output.
【0014】[0014]
【発明の効果】以上説明したように本発明は、光学的文
字読取装置の重送検出回路において、帳票の透過光量測
定値の変動を補正することを可能としたので、装置運用
前の調整作業が不要となる効果を有する。また帳票重送
の判定処理を搬送制御部から分離することにより、搬送
制御処理負荷を軽減する効果を有する。As described above, according to the present invention, in the double feed detection circuit of the optical character reading device, it is possible to correct the fluctuation of the measured value of the transmitted light amount of the form. Has the effect of becoming unnecessary. Further, by separating the form multifeed determination process from the transport control unit, there is an effect of reducing the transport control process load.
【図1】本発明の紙葉類の重送検出回路の第1の実施例
を示すブロック図である。FIG. 1 is a block diagram showing a first embodiment of a double feed detection circuit for paper sheets according to the present invention.
【図2】本発明の紙葉類の重送検出回路の第2の実施例
を示すブロック図である。FIG. 2 is a block diagram showing a second embodiment of a double feed detection circuit for paper sheets according to the present invention.
【図3】従来の紙葉類の重送検出回路の一例を示すブロ
ック図である。FIG. 3 is a block diagram showing an example of a conventional double feed detection circuit for paper sheets.
1 透過光量測定部 2 増幅器 3 固定抵抗器 4 白基準記憶部 5 基準値補正部 6 基準値設定部 7 A/D変換部 8 搬送制御部 9 用紙厚記憶部 10 重送判定部 1 Transmitted light amount measuring unit 2 Amplifier 3 Fixed resistor 4 White reference storage unit 5 Reference value correction unit 6 Reference value setting unit 7 A / D conversion unit 8 Transport control unit 9 Paper thickness storage unit 10 Double feed determination unit
Claims (2)
用紙の無い状態で測定する用紙透過光量値情報を蓄える
白基準記憶部と、前記紙葉類の搬送時に電気信号変換処
理に使用される基準値を演算する基準値補正部とを備え
ることを特徴とする紙葉類の重送検出回路。1. A white reference storage unit for storing information about the amount of transmitted light of a paper measured by a sensor on a conveyance path for conveying the paper without a paper, and used for an electric signal conversion process when the paper is conveyed. A double feed detection circuit for paper sheets, comprising:
する重送判定部を付加してなることを特徴とする請求項
1記載の紙葉類の重送検出回路。2. The double-feed detection circuit for paper sheets according to claim 1, further comprising a double-feed determination unit that detects the presence or absence of double-feed based on the value of the amount of light transmitted through the paper.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16810992A JPH069106A (en) | 1992-06-26 | 1992-06-26 | Double feeding detecting circuit for paper sheet, etc. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16810992A JPH069106A (en) | 1992-06-26 | 1992-06-26 | Double feeding detecting circuit for paper sheet, etc. |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH069106A true JPH069106A (en) | 1994-01-18 |
Family
ID=15862023
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16810992A Pending JPH069106A (en) | 1992-06-26 | 1992-06-26 | Double feeding detecting circuit for paper sheet, etc. |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH069106A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20020070860A (en) * | 2001-03-01 | 2002-09-11 | 가부시끼가이샤 도시바 | Analog/digital converter |
US8995027B2 (en) | 2012-09-14 | 2015-03-31 | Pfu Limited | Image reading apparatus and an image processing system including an image sensor and a reference plate on the conveyance path for detecting the thickness of a medium |
US9674389B2 (en) | 2012-09-14 | 2017-06-06 | Pfu Limited | Image unit with guide unit movable in direction perpendicular to conveyance path |
-
1992
- 1992-06-26 JP JP16810992A patent/JPH069106A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20020070860A (en) * | 2001-03-01 | 2002-09-11 | 가부시끼가이샤 도시바 | Analog/digital converter |
US8995027B2 (en) | 2012-09-14 | 2015-03-31 | Pfu Limited | Image reading apparatus and an image processing system including an image sensor and a reference plate on the conveyance path for detecting the thickness of a medium |
US9674389B2 (en) | 2012-09-14 | 2017-06-06 | Pfu Limited | Image unit with guide unit movable in direction perpendicular to conveyance path |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20020820 |