JP2008096204A - エンコーダ - Google Patents
エンコーダ Download PDFInfo
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- JP2008096204A JP2008096204A JP2006276600A JP2006276600A JP2008096204A JP 2008096204 A JP2008096204 A JP 2008096204A JP 2006276600 A JP2006276600 A JP 2006276600A JP 2006276600 A JP2006276600 A JP 2006276600A JP 2008096204 A JP2008096204 A JP 2008096204A
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- JP
- Japan
- Prior art keywords
- light
- detected
- encoder
- scale
- detected light
- Prior art date
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- 230000003287 optical effect Effects 0.000 claims description 19
- 230000031700 light absorption Effects 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 abstract description 22
- 238000012937 correction Methods 0.000 abstract description 7
- 239000010408 film Substances 0.000 description 16
- 238000012545 processing Methods 0.000 description 7
- 238000005259 measurement Methods 0.000 description 6
- 239000000428 dust Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/347—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using displacement encoding scales
- G01D5/3473—Circular or rotary encoders
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/347—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using displacement encoding scales
- G01D5/34776—Absolute encoders with analogue or digital scales
- G01D5/34784—Absolute encoders with analogue or digital scales with only analogue scales or both analogue and incremental scales
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/36—Forming the light into pulses
Abstract
【解決手段】 エンコーダ1では、半円状の開口部17が形成された歯車付き回転板8に被検出光を通すことにより、スケール板11のうち、配列ラインL1,L2の半周分を含む領域に被検出光が照射される明部19が形成され、明部19を除く領域に被検出光が照射されない暗部20が形成される。これにより、エンコーダ1では、スケール板11に対する被検出光の照射位置が基準からずれている場合であっても、角度検出時における光強度波形Pの半値幅Wに対応する角度範囲と基準角度範囲との差α°に基づく補正量を加減し、測定対象物の絶対角度を精度良く検出することができる。
【選択図】 図1
Description
図1は、本発明の第1実施形態に係るエンコーダを示す斜視図である。図1に示すエンコーダ1は、いわゆるアブソリュート型のロータリエンコーダであり、例えば自動車のハンドルといった測定対象物(図示しない)の絶対角度を検出するデバイスである。このエンコーダ1は、測定対象物に連結される回転軸2と、この回転軸2に固定された歯車付き円板3とを備えている。歯車付き円板3は、測定対象物と連動する回転軸2の回転に伴って、矢印A方向に回転する。
続いて、本発明の第2実施形態に係るエンコーダについて説明する。図10に示すように、第2実施形態に係るエンコーダ30は、スケール板11に明部19及び暗部20を形成するにあたり、LED6から出射した被検出光を歯車付き回転板31の光反射部32で反射させる点で、被検出光を歯車付き回転板8の開口部17から通過させる第1実施形態と異なっている。
Claims (7)
- 回転体と、
前記回転体に対して被検出光を出射する光源装置と、
複数の受光素子が配列されたスケール、及び前記回転体を経由して前記受光素子に入射する前記被検出光の光強度に基づく出力信号を出力する出力部を有する受光装置とを備え、
前記受光素子は、環状の配列ラインに沿って前記スケールに配列され、
前記回転体は、前記スケールにおいて、前記配列ラインの一部を含む領域を前記被検出光が照射される明部とし、前記配列ラインの一部を除く他の部分を含む領域を前記被検出光が照射されない暗部とすることを特徴とするエンコーダ。 - 前記回転体には、前記配列ラインに対応する径の半円状の光透過部が形成されており、
前記明部は、前記光透過部を通過した前記被検出光によって形成されていることを特徴とする請求項1記載のエンコーダ。 - 前記光透過部は、開口部であることを特徴とする請求項2記載のエンコーダ。
- 前記回転体には、前記配列ラインに対応する径の半円状の光反射部が形成されており、
前記明部は、前記光反射部で反射した前記被検出光によって形成されていることを特徴とする請求項1記載のエンコーダ。 - 前記光反射部は、前記被検出光の光軸中心からずれた位置に形成されていることを特徴とする請求項4記載のエンコーダ。
- 前記受光素子は、前記配列ラインに沿って千鳥状に配列されていることを特徴とする請求項1〜5のいずれか一項記載のエンコーダ。
- 前記スケールにおいて、前記受光素子が配列された領域を除く領域には、光吸収膜が形成されていることを特徴とする請求項1〜6のいずれか一項記載のエンコーダ。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006276600A JP4890190B2 (ja) | 2006-10-10 | 2006-10-10 | エンコーダ |
US11/605,474 US7544925B2 (en) | 2006-10-10 | 2006-11-29 | Encoder including rotating member, light source device and photodetecting device including a scale having photodetecting elements arranged thereon |
CN2007800379783A CN101523163B (zh) | 2006-10-10 | 2007-06-19 | 编码器 |
KR1020097004178A KR20090074725A (ko) | 2006-10-10 | 2007-06-19 | 인코더 |
DE112007002449T DE112007002449T5 (de) | 2006-10-10 | 2007-06-19 | Codeumsetzer |
PCT/JP2007/062278 WO2008044367A1 (fr) | 2006-10-10 | 2007-06-19 | Codeur |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006276600A JP4890190B2 (ja) | 2006-10-10 | 2006-10-10 | エンコーダ |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008096204A true JP2008096204A (ja) | 2008-04-24 |
JP4890190B2 JP4890190B2 (ja) | 2012-03-07 |
Family
ID=39274321
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006276600A Active JP4890190B2 (ja) | 2006-10-10 | 2006-10-10 | エンコーダ |
Country Status (6)
Country | Link |
---|---|
US (1) | US7544925B2 (ja) |
JP (1) | JP4890190B2 (ja) |
KR (1) | KR20090074725A (ja) |
CN (1) | CN101523163B (ja) |
DE (1) | DE112007002449T5 (ja) |
WO (1) | WO2008044367A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105378436A (zh) * | 2013-07-08 | 2016-03-02 | 爱默生过程管理阀门自动化公司 | 绝对位置检测器 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1936331A4 (en) * | 2005-10-13 | 2015-12-09 | Hamamatsu Photonics Kk | ENCODER AND LIGHT RECEIVING DEVICE FOR ENCODER |
JP2008096205A (ja) * | 2006-10-10 | 2008-04-24 | Hamamatsu Photonics Kk | エンコーダ及びエンコーダ用受光装置 |
US8212202B2 (en) * | 2009-01-08 | 2012-07-03 | Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. | Reflective optical encoder package and method |
US8063355B2 (en) * | 2009-01-08 | 2011-11-22 | Avago Technologies Limited | Reflective multi-turn encoders with different light sensing systems |
EP3276856B1 (en) * | 2015-03-25 | 2021-05-05 | Kuang-Chi Intelligent Photonic Technology Ltd. | Optical signal reception apparatus |
CN104792351B (zh) * | 2015-04-20 | 2017-04-26 | 哈尔滨工业大学 | 用于绝对式码盘的复合式码盘误码校正方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6114518A (ja) * | 1984-06-25 | 1986-01-22 | エナジ− イノベ−シヨンズ インコ−ポレイテツド | 非接触軸角度検出器 |
JPH01196514A (ja) * | 1988-02-01 | 1989-08-08 | Fuji Electric Co Ltd | 光電変換式回転位置検出器 |
JP2003315101A (ja) * | 2002-04-22 | 2003-11-06 | Olympus Optical Co Ltd | 光学式エンコーダ |
JP2004317357A (ja) * | 2003-04-17 | 2004-11-11 | Sanyo Electric Co Ltd | 受光素子及びそれを備える光エンコーダ |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
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DE3035012C2 (de) * | 1980-09-17 | 1982-08-12 | Fa. Carl Zeiss, 7920 Heidenheim | Einrichtung zur Winkelmessung |
JPS6047917A (ja) | 1983-08-26 | 1985-03-15 | Fuji Electric Corp Res & Dev Ltd | 回転角度検出装置 |
JPS60210718A (ja) | 1984-04-04 | 1985-10-23 | Sumitomo Electric Ind Ltd | 光検出方式 |
JPS61169703A (ja) | 1985-01-24 | 1986-07-31 | Nissan Motor Co Ltd | 位置検出装置 |
JPS61241621A (ja) | 1985-04-19 | 1986-10-27 | Japan Aviation Electronics Ind Ltd | 光フアイバロ−タリエンコ−ダ |
JPS6288917A (ja) * | 1985-10-16 | 1987-04-23 | Fuji Electric Co Ltd | 回転位置検出装置 |
AT385682B (de) | 1985-11-08 | 1988-05-10 | Voest Alpine Ag | Verfahren zum trennen von gasgemischen, sowie vorrichtung zur durchfuehrung dieses verfahrens |
JPH0810145A (ja) | 1994-06-28 | 1996-01-16 | Matsushita Electric Ind Co Ltd | 炊飯器 |
JP3631551B2 (ja) * | 1996-01-23 | 2005-03-23 | 株式会社ミツトヨ | 光学式エンコーダ |
JP4182299B2 (ja) | 1997-11-14 | 2008-11-19 | 株式会社安川電機 | 光学式エンコーダおよび光学式エンコーダの固定側素子取り付け方法 |
US6127676A (en) * | 1998-02-20 | 2000-10-03 | Tseng; Hsin Te | Photo sensing device with means to eliminate light beam interference |
JP3659029B2 (ja) | 1998-11-04 | 2005-06-15 | 富士電機機器制御株式会社 | アブソリュートエンコーダ |
JP4981203B2 (ja) | 2000-08-01 | 2012-07-18 | オリンパス株式会社 | 光学式エンコーダー |
US6713756B2 (en) * | 2000-05-09 | 2004-03-30 | Olympus Corporation | Optical encoder and optical rotary encoder |
JP2002139353A (ja) | 2000-11-06 | 2002-05-17 | Olympus Optical Co Ltd | 光学式ロータリエンコーダ |
ES2244823T3 (es) * | 2002-01-17 | 2005-12-16 | Dr. Johannes Heidenhain Gmbh | Dispositivo de medicion de posicion. |
JP2005121612A (ja) | 2003-10-20 | 2005-05-12 | Hamamatsu Photonics Kk | アブソリュートエンコーダ及び角度検出方法 |
JP2006119082A (ja) | 2004-10-25 | 2006-05-11 | Hitachi Cable Ltd | 操舵角検出装置 |
US7784694B2 (en) * | 2005-11-21 | 2010-08-31 | Avago Technologies General Ip (Singapore) Pte. Ltd. | Reflective encoder with lens on code strip |
-
2006
- 2006-10-10 JP JP2006276600A patent/JP4890190B2/ja active Active
- 2006-11-29 US US11/605,474 patent/US7544925B2/en active Active
-
2007
- 2007-06-19 DE DE112007002449T patent/DE112007002449T5/de not_active Ceased
- 2007-06-19 KR KR1020097004178A patent/KR20090074725A/ko not_active Application Discontinuation
- 2007-06-19 WO PCT/JP2007/062278 patent/WO2008044367A1/ja active Application Filing
- 2007-06-19 CN CN2007800379783A patent/CN101523163B/zh active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6114518A (ja) * | 1984-06-25 | 1986-01-22 | エナジ− イノベ−シヨンズ インコ−ポレイテツド | 非接触軸角度検出器 |
JPH01196514A (ja) * | 1988-02-01 | 1989-08-08 | Fuji Electric Co Ltd | 光電変換式回転位置検出器 |
JP2003315101A (ja) * | 2002-04-22 | 2003-11-06 | Olympus Optical Co Ltd | 光学式エンコーダ |
JP2004317357A (ja) * | 2003-04-17 | 2004-11-11 | Sanyo Electric Co Ltd | 受光素子及びそれを備える光エンコーダ |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105378436A (zh) * | 2013-07-08 | 2016-03-02 | 爱默生过程管理阀门自动化公司 | 绝对位置检测器 |
Also Published As
Publication number | Publication date |
---|---|
CN101523163A (zh) | 2009-09-02 |
US7544925B2 (en) | 2009-06-09 |
KR20090074725A (ko) | 2009-07-07 |
US20080083869A1 (en) | 2008-04-10 |
DE112007002449T5 (de) | 2009-09-03 |
CN101523163B (zh) | 2011-07-20 |
WO2008044367A1 (fr) | 2008-04-17 |
JP4890190B2 (ja) | 2012-03-07 |
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