JP2006258452A - Redundant optical encoder apparatus - Google Patents

Redundant optical encoder apparatus Download PDF

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Publication number
JP2006258452A
JP2006258452A JP2005072655A JP2005072655A JP2006258452A JP 2006258452 A JP2006258452 A JP 2006258452A JP 2005072655 A JP2005072655 A JP 2005072655A JP 2005072655 A JP2005072655 A JP 2005072655A JP 2006258452 A JP2006258452 A JP 2006258452A
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base
light emitting
light receiving
circuit board
printed circuit
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Kenichi Tamura
健一 田村
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Tamagawa Seiki Co Ltd
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Tamagawa Seiki Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a function of redundant system by providing at least a pair of optical detection parts on the base. <P>SOLUTION: A redundant optical encoder apparatus is provided with the rotary code plate (4) to the rotary shaft (3) provided via the bearing (2) on the base (1), From at least the pair of optical detectors (5, 5A) provided on the base (1), the same encoder output signals are emitted for obtaining the redundant system. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、冗長系光学式エンコーダ装置に関し、特に、発光素子と受光素子からなる光学式検出部を複数配設することにより、冗長系のエンコーダ出力信号を得るようにするための新規な改良に関する。   The present invention relates to a redundant optical encoder device, and more particularly to a novel improvement for obtaining a redundant encoder output signal by disposing a plurality of optical detectors each including a light emitting element and a light receiving element. .

従来、用いられていたこの種のエンコーダとしては、例えば、特許文献１及び２に開示された構成を挙げることができる。
すなわち、特許文献１に開示されたエンコーダは、図３に示されるように、基台１に軸受２を介して回転自在に設けられた回転軸３には、回転符号板４が回転自在に設けられている。 Conventionally used encoders of this type include, for example, the configurations disclosed in Patent Documents 1 and 2.
That is, in the encoder disclosed in Patent Document 1, as shown in FIG. 3, a rotary code plate 4 is rotatably provided on a rotating shaft 3 that is rotatably provided on a base 1 via a bearing 2. It has been.

前記基台１の上部には、発光素子及び受光素子からなる光学式検出部５が設けられており、前記回転軸３及び光学式検出部５を覆うようにカバー６が設けられている。   An optical detection unit 5 including a light emitting element and a light receiving element is provided on the base 1, and a cover 6 is provided so as to cover the rotating shaft 3 and the optical detection unit 5.

また、図示していないが、特許文献２に開示されたエンコーダにおいては、モータに結合されたモータエンコーダの構造であり、モータの回転軸と結合される中空回転軸の回転符号板に対して光学式検出部が設けられている。   Although not shown, the encoder disclosed in Patent Document 2 has a structure of a motor encoder coupled to a motor, and is optical with respect to a rotational code plate of a hollow rotational shaft coupled to the rotational shaft of the motor. An expression detection unit is provided.

特開平９−１０１１７４号公報JP-A-9-101174 特開平９−１０５６４３号公報JP-A-9-105643

従来のエンコーダは、以上のように構成されていたため、次のような課題が存在していた。
すなわち、前述の各特許文献に開示されたエンコーダにおいては、何れも、光学式検出部は１個のみであるため、この光学式検出部の発光素子又は受光素子あるいはエンコーダ信号処理回路等に何らかの支障が生じた場合には、エンコーダ信号の出力が不能となっていた。
また、エンコーダを冗長系とするためには、図示していないが、例えば、図３で示されるエンコーダを２個直列に接続して用いるか、又は、他の回転検出センサを用いるかであったが、軸方向の容積を多く必要とすると共に、コストアップとなり、実用上では大きい支障が発生していた。 Since the conventional encoder is configured as described above, the following problems exist.
That is, in each of the encoders disclosed in the above-mentioned patent documents, since there is only one optical detection unit, there is some problem with the light emitting element or the light receiving element or the encoder signal processing circuit of this optical detection unit. If this occurs, the encoder signal cannot be output.
Moreover, in order to make the encoder a redundant system, although not shown in the figure, for example, two encoders shown in FIG. 3 are connected in series, or another rotation detection sensor is used. However, this requires a large volume in the axial direction and increases the cost.

本発明による冗長系光学式エンコーダ装置は、基台に軸受を介して回転自在に設けられた回転軸と、前記基台に設けられた発光素子又は受光素子と、前記回転軸に設けられた回転符号板と、前記基台に支持され前記発光素子又は受光素子と対向する受光素子又は発光素子を有するプリント基板とを備え、前記基台には、前記発光素子又は受光素子が少なくとも一対設けられ、前記プリント基板には、前記受光素子又は発光素子が少なくとも一対設けられ、少なくとも二重冗長系とした構成であり、また、前記プリント基板は、複数の支柱を介して前記基台に支持されている構成であり、また、前記基台に設けられた一対の前記発光素子又は受光素子は、前記基台上で１８０度対向して配設されている構成であり、また、前記プリント基板は、分割して形成された少なくとも一対のプリント基板片よりなる構成であり、また、前記回転符号板は１枚の円板よりなり、前記各発光素子及び受光素子に対して共通に用いられる構成であり、また、前記各プリント基板片には、各々独立したエンコーダ信号処理回路が設けられている構成である。 A redundant optical encoder device according to the present invention includes a rotating shaft that is rotatably provided on a base via a bearing, a light emitting element or a light receiving element that is provided on the base, and a rotation that is provided on the rotating shaft. A code board and a printed circuit board having a light receiving element or a light emitting element supported by the base and facing the light emitting element or the light receiving element, and the base is provided with at least a pair of the light emitting element or the light receiving element, The printed circuit board is provided with at least a pair of the light receiving elements or light emitting elements, and is configured to be at least a double redundant system, and the printed circuit board is supported on the base via a plurality of support columns. Further, the pair of light emitting elements or light receiving elements provided on the base is configured to be opposed to each other by 180 degrees on the base, and the printed circuit board includes: The rotary code plate is composed of at least one pair of printed circuit board pieces formed by splitting, and is configured to be used in common for each of the light emitting element and the light receiving element. Each of the printed circuit board pieces is provided with an independent encoder signal processing circuit.

本発明による冗長系光学式エンコーダ装置は、以上のように構成されているため、次のような効果を得ることができる。
すなわち、光学式検出部が基台上に少なくとも一対設けられているため、冗長系を構成することができる。
また、各光学式検出部に接続された駆動回路及びエンコーダ信号処理回路等が独立してプリント基板に形成されているため、冗長系の信頼性を向上させることができる。 Since the redundant optical encoder device according to the present invention is configured as described above, the following effects can be obtained.
That is, since at least one pair of optical detection units is provided on the base, a redundant system can be configured.
In addition, since the drive circuit and encoder signal processing circuit connected to each optical detection unit are independently formed on the printed circuit board, the reliability of the redundant system can be improved.

本発明は、発光素子と受光素子からなる光学式検出部を複数配設することにより、冗長系のエンコーダ出力を得るようにした冗長系光学式エンコーダ装置を提供することを目的とする。   SUMMARY OF THE INVENTION An object of the present invention is to provide a redundant optical encoder device that provides a redundant encoder output by arranging a plurality of optical detectors each composed of a light emitting element and a light receiving element.

以下、図面と共に本発明による冗長系光学式エンコーダ装置の好適な実施の形態について説明する。
尚、従来例と同一又は同等部分には同一符号を付して説明する。
図１において符号１で示されるものは、基台であり、この基台１に軸受２を介して回転自在に設けられた回転軸３には１枚の輪状の円板からなる回転符号板４が一体回転自在に設けられている。 A preferred embodiment of a redundant optical encoder device according to the present invention will be described below with reference to the drawings.
In addition, the same code | symbol is attached | subjected and demonstrated to a part the same as that of a prior art example, or an equivalent part.
In FIG. 1, reference numeral 1 denotes a base, and a rotary code plate 4 formed of a single ring-shaped disc is provided on a rotary shaft 3 that is rotatably provided on the base 1 via a bearing 2. Are provided so as to be integrally rotatable.

前記基台１上の互いに１８０度対向する位置には、一対のＬＥＤからなる発光素子１０，１１が設けられており、この基台１上には支柱１２を介して一対の互いに独立したプリント基板片１３，１４が前記基台１の上面１ａに対して平行な状態で配設されている。   Light emitting elements 10 and 11 made of a pair of LEDs are provided at positions on the base 1 that are opposed to each other by 180 degrees. The pieces 13 and 14 are arranged in parallel with the upper surface 1a of the base 1.

前記各プリント基板片１３，１４の下面には、一対の受光素子２０，２１が前記各発光素子１０，１１に対向して配設されている。
前記発光素子１０及び受光素子２０により光学式検出部５が形成され、前記発光素子１１及び受光素子２１により光学式検出部５Ａで形成されている。 A pair of light receiving elements 20, 21 are disposed on the lower surfaces of the printed circuit board pieces 13, 14 so as to face the light emitting elements 10, 11.
An optical detection unit 5 is formed by the light emitting element 10 and the light receiving element 20, and an optical detection unit 5A is formed by the light emitting element 11 and the light receiving element 21.

前記基台１上には、前記回転軸３、各光学式検出部５，５Ａ及び各プリント基板片１３，１４を覆うためのキャンプ状のカバー６が設けられており、前記各プリント基板片１３，１４には、前記各発光素子１０，１１を駆動するための図示しない駆動回路及び前記各受光素子２０，２１からの出力信号を処理してエンコーダ信号を出力ケーブル３０，３１から外部に出力するためのエンコーダ信号処理回路３５，３６が独立した状態で設けられている。   On the base 1, a camp-like cover 6 is provided to cover the rotating shaft 3, the optical detection units 5, 5 </ b> A, and the printed board pieces 13, 14. , 14 process drive signals (not shown) for driving the light emitting elements 10 and 11 and output signals from the light receiving elements 20 and 21, and output encoder signals from the output cables 30 and 31 to the outside. Encoder signal processing circuits 35 and 36 are provided in an independent state.

従って、前述の構成で、回転軸３を回転させ、共通の回転符号板４を介して各光学式検出部５，５Ａから出力された出力信号は、各プリント基板片１３，１４の各エンコーダ信号処理回路３５，３６からエンコーダ信号として全く同一の冗長系の信号を得ることができる。   Therefore, with the above-described configuration, the rotation shaft 3 is rotated, and the output signals output from the optical detection units 5 and 5A via the common rotation code plate 4 are the encoder signals of the printed circuit board pieces 13 and 14, respectively. From the processing circuits 35 and 36, exactly the same redundant signal can be obtained as an encoder signal.

尚、前述の構成においては、冗長系を２系統として用いた場合について述べたが、２系統以上の３系統等とすることもできる。
又、前述の構成における各プリント基板片１３，１４は、一体の輪状のプリント基板４０として用いることもできる。 In the above-described configuration, the case where the redundant system is used as two systems has been described, but it is also possible to use three systems of two systems or more.
Moreover, each printed circuit board piece 13 and 14 in the above-mentioned structure can also be used as an integral ring-shaped printed circuit board 40.

本発明は、２重冗長系に限らず、２重以上の多重冗長系に適用できるものである。   The present invention is applicable not only to a double redundant system but also to a multiple redundant system of double or more.

本発明による冗長系光学式エンコーダ装置を示す断面図である。It is sectional drawing which shows the redundant type | system | group optical encoder apparatus by this invention. 図１の平面図である。It is a top view of FIG. 従来構成を示す断面図である。It is sectional drawing which shows a conventional structure.

符号の説明Explanation of symbols

１ 基台
２ 軸受
３ 回転軸
４ 回転符号板
５，５Ａ 光学式検出部
１０，１１ 発光素子
１２ 支柱
１３，１４ プリント基板片
２０，２１ 受光素子
３０，３１ 出力ケーブル
３５，３６ エンコーダ信号処理回路 DESCRIPTION OF SYMBOLS 1 Base 2 Bearing 3 Rotating shaft 4 Rotation code plate 5, 5A Optical detection part 10, 11 Light emitting element 12 Strut 13, 14 Printed circuit board piece 20, 21 Light receiving element 30, 31 Output cable 35, 36 Encoder signal processing circuit

Claims (6)

基台(1)に軸受(2)を介して回転自在に設けられた回転軸(3)と、前記基台(1)に設けられた発光素子(10,11)又は受光素子と、前記回転軸(3)に設けられた回転符号板(4)と、前記基台(1)に支持され前記発光素子(10,11)又は受光素子と対向する受光素子(20,21)又は発光素子を有するプリント基板(40)とを備え、
前記基台(1)には、前記発光素子(10,11)又は受光素子が少なくとも一対設けられ、前記プリント基板(40)には、前記受光素子(20,21)又は発光素子が少なくとも一対設けられ、少なくとも二重冗長系を構成することを特徴とする冗長系光学式エンコーダ装置。 A rotating shaft (3) provided rotatably on a base (1) via a bearing (2), a light emitting element (10, 11) or a light receiving element provided on the base (1), and the rotation A rotary sign plate (4) provided on the shaft (3), and a light receiving element (20, 21) or light emitting element supported by the base (1) and facing the light emitting element (10, 11) or the light receiving element. A printed circuit board (40) having,
The base (1) is provided with at least a pair of light emitting elements (10, 11) or light receiving elements, and the printed circuit board (40) is provided with at least a pair of light receiving elements (20, 21) or light emitting elements. And a redundant optical encoder device comprising at least a double redundant system. 前記プリント基板(40)は、複数の支柱(12)を介して前記基台(1)に支持されていることを特徴とする請求項１記載の冗長系光学式エンコーダ装置。   The redundant optical encoder device according to claim 1, wherein the printed circuit board (40) is supported by the base (1) via a plurality of support columns (12). 前記基台(1)に設けられた一対の前記発光素子(10,11)又は受光素子は、前記基台(1)上で１８０度対向して配設されていることを特徴とする請求項１又は２記載の冗長系光学式エンコーダ装置。   The pair of the light emitting elements (10, 11) or the light receiving elements provided on the base (1) are disposed to face each other at 180 degrees on the base (1). 3. The redundant optical encoder device according to 1 or 2. 前記プリント基板(40)は、分割して形成された少なくとも一対のプリント基板片(13,14)よりなることを特徴とする請求項１ないし３の何れかに記載の冗長系光学式エンコーダ装置。   4. The redundant optical encoder device according to claim 1, wherein the printed circuit board (40) comprises at least a pair of printed circuit board pieces (13, 14) formed separately. 前記回転符号板(4)は１枚の円板よりなり、前記各発光素子(10,11)及び受光素子(20,21)に対して共通に用いられる構成としたことを特徴とする請求項１ないし４の何れかに記載の冗長系光学式エンコーダ装置。   The rotary code plate (4) is composed of a single disc, and is configured to be used in common for the light emitting elements (10, 11) and the light receiving elements (20, 21). 5. The redundant optical encoder device according to any one of 1 to 4. 前記各プリント基板片(13,14)には、各々独立したエンコーダ信号処理回路(35,36)が設けられていることを特徴とする請求項１記載の冗長系光学式エンコーダ装置。   The redundant optical encoder device according to claim 1, wherein each of the printed circuit board pieces (13, 14) is provided with an independent encoder signal processing circuit (35, 36).
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013536428A (en) * 2010-08-24 2013-09-19 ロトーク・コントロールズ・リミテッド Device adapted to indicate the angular position of the input member over multiple revolutions
WO2016079796A1 (en) * 2014-11-17 2016-05-26 光洋電子工業株式会社 Rotary encoder

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4625827Y1 (en) * 1967-12-21 1971-09-06
JPS5739311A (en) * 1980-08-20 1982-03-04 Fanuc Ltd Pulse encoder device having alarm circuit
JPS6224315A (en) * 1985-07-24 1987-02-02 Nec Corp Keyboard
JPS6367818A (en) * 1986-08-26 1988-03-26 アメリカン　テレフオン　アンド　テレグラフ　カムパニ− Domino cmos logic circuit
JPS63106522A (en) * 1986-10-24 1988-05-11 Toshiba Corp Photoelectric type pulse transmitter
JPH0317516A (en) * 1989-06-15 1991-01-25 Tamagawa Seiki Co Ltd Optical encoder
WO2004005937A2 (en) * 2002-07-02 2004-01-15 Aktiebolaget Skf Antifriction bearing equipped with a sensor and electrical motor equipped therewith

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4625827Y1 (en) * 1967-12-21 1971-09-06
JPS5739311A (en) * 1980-08-20 1982-03-04 Fanuc Ltd Pulse encoder device having alarm circuit
JPS6224315A (en) * 1985-07-24 1987-02-02 Nec Corp Keyboard
JPS6367818A (en) * 1986-08-26 1988-03-26 アメリカン　テレフオン　アンド　テレグラフ　カムパニ− Domino cmos logic circuit
JPS63106522A (en) * 1986-10-24 1988-05-11 Toshiba Corp Photoelectric type pulse transmitter
JPH0317516A (en) * 1989-06-15 1991-01-25 Tamagawa Seiki Co Ltd Optical encoder
WO2004005937A2 (en) * 2002-07-02 2004-01-15 Aktiebolaget Skf Antifriction bearing equipped with a sensor and electrical motor equipped therewith

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013536428A (en) * 2010-08-24 2013-09-19 ロトーク・コントロールズ・リミテッド Device adapted to indicate the angular position of the input member over multiple revolutions
US9310195B2 (en) 2010-08-24 2016-04-12 Rotork Controls Limited Apparatus adapted to provide an indication of an angular position of an input member over multiple turns
WO2016079796A1 (en) * 2014-11-17 2016-05-26 光洋電子工業株式会社 Rotary encoder

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