JPH02222810A - Rotary encoder - Google Patents
Rotary encoderInfo
- Publication number
- JPH02222810A JPH02222810A JP1455489A JP1455489A JPH02222810A JP H02222810 A JPH02222810 A JP H02222810A JP 1455489 A JP1455489 A JP 1455489A JP 1455489 A JP1455489 A JP 1455489A JP H02222810 A JPH02222810 A JP H02222810A
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- rotary encoder
- optical
- noise
- output
- 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
- Arrangements For Transmission Of Measured Signals (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Optical Transform (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】
〔産業上の利用分野〕
この発明は、回転体の回転速度もしくは回転位置を検出
する検出器に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a detector that detects the rotational speed or rotational position of a rotating body.
従来のこの種の物として例えば
デュポンジャパンリ之テッド社製（１９８７年１２月発
行）デュポン光源氏・ファイバエンコーダ製品仕様書型
式ＦＩＩｔＫ−４ＢＯフ２０−８！（６−００８および
ＩＦ ＩｔＫ−４Ｂ０７ｇＯ−４１６−００８に示すよ
うなファイバーエンコーダがあった。An example of a conventional product of this type is the DuPont Hikari Genji Fiber Encoder Product Specification Form FIItK-4BO Fu20-8! manufactured by DuPont Japan Limited (issued December 1987). (There were fiber encoders as shown in 6-008 and IF ItK-4B07gO-416-008.
また、
コパル電子株式会社製カタログＭｉｎｉ−Ｒｏｔａｒｙ
ＩＣｎｏｏｄ・ｒ ＲＩＩＩ ５ｅｒｉ・Ｓ に示す
ようなロータリエンコーダがあった。In addition, the catalog Mini-Rotary manufactured by Copal Electronics Co., Ltd.
There was a rotary encoder as shown in ICnood・r RIII 5eri・S.
的記ファイバエンコーダは、光信号発生部及び受信部で
成るアンプ部と被検出部に取り付けられるエンコーダ本
体とで構成されるロータリエンコーダであυ、エンコー
ダ本体は電気回路を有さない為、ＩＩ！Ｍｘ対策不用の
検出器となっている。−方前記コバル電子株式会社製ロ
ータリエンフーダは、±５％の精度を持つ直流電力を電
源端子よυ供電する事により、ＰＬＯ内部電気回路が動
作し検出出力としてＰＩ、Ｇ内部のトランジスタのＯＮ
・ｏｙｙ信号が出力される構成となっている。Note: A fiber encoder is a rotary encoder consisting of an amplifier section consisting of an optical signal generating section and a receiving section, and an encoder body attached to the detected section.Since the encoder body does not have an electric circuit, II! This detector does not require Mx countermeasures. - On the other hand, in the rotary enhancer manufactured by Kobal Electronics Co., Ltd., by supplying DC power with an accuracy of ±5% to the power supply terminal, the internal electric circuit of the PLO operates and the transistors inside PI and G are turned on as a detection output.
・The configuration is such that an oyy signal is output.
従来のＰＬＧは以上のように構成されているのでファイ
バエンコーダはアンプ部を別置する必要があり、且つ高
価である。又、コパル社製のようなＰＬＯは安定した直
流電力を供給しなけれはならなく且つ出力信号の伝送に
ついては伝送路の周波数特性や信号の反射による波形歪
の問題や電線路より流入するノイズの問題を考慮する必
要があった。又、上記いずれのＰＩ、Ｇも検出信号伝送
距離をｌｏｎ以下で考慮しており、外来ノイズの影響な
く数百メートルに及ぶ信号伝送が出来ないと云う課題が
あった。Since the conventional PLG is configured as described above, the fiber encoder requires a separate amplifier section and is expensive. In addition, PLOs such as those made by Copal must supply stable DC power, and when transmitting output signals, there are problems with the frequency characteristics of the transmission line, waveform distortion due to signal reflection, and noise flowing in from the electric line. The problem needed to be considered. Furthermore, in both the PI and G, the detection signal transmission distance is considered to be less than lon, and there is a problem in that it is not possible to transmit signals over hundreds of meters without being affected by external noise.
この発明は上記のような課題点を解消するためになされ
たものでＰＬＯへの給電電圧の許容変動中を大とする一
方、給電線路のＩＭＩ対策を軽減させると共に出力信号
伝送路をノイズフリーとし、安価で且つ長距離に及ぶ出
力信号伝送が可能であるＰＩ、Ｇを得る事を目的とする
。This invention was made to solve the above-mentioned problems, and while increasing the permissible variation of the power supply voltage to the PLO, it also reduces the IMI countermeasures for the power supply line and makes the output signal transmission line noise-free. The purpose of this invention is to obtain PI and G that are inexpensive and capable of transmitting output signals over long distances.
この発明に係るロータリエンコーダ装置はこの四−タリ
エンコーダに供給する電圧よりも高い電・圧の外部電源
からノイズフィルタを直して径、安定化電源で安定化し
てから供給し、ロータリエンコーダの出力は電光変換器
で光信号にして光コネクタｔ−１１１で光ファイバーで
伝送し、ノイズフィルタ、安定化電源、光コネクタ、電
光変換器は少くともシールドケース内に収納したもので
ある。The rotary encoder device according to the present invention supplies the output of the rotary encoder after fixing the noise filter and stabilizing it with the stabilized power supply from an external power supply with a voltage higher than the voltage supplied to the four-way encoder. The signal is converted into an optical signal by an electro-optic converter and transmitted through an optical fiber via an optical connector T-111, and the noise filter, stabilized power supply, optical connector, and electro-optical converter are housed at least in a shield case.
この発明におけるロータリエンコーダ装置はノイズフィ
ルタの設置、出力信号の先代、Ｉ！：Ｍ工しゃへい能力
の高いシールドケースへの収納によりＩＭＩに強ＰＬＧ
を実現させると共に、安定化電源を内蔵させる事により
、給電電圧の許容電圧変動幅を大とし、また、光信号に
より出力信号の長距離伝送を可能とする。The rotary encoder device in this invention includes the installation of a noise filter, the predecessor of the output signal, and the I! : PLG strong against IMI due to storage in a shield case with high M engineering shielding ability
In addition to realizing this, by incorporating a stabilized power supply, the permissible voltage fluctuation range of the power supply voltage is increased, and long-distance transmission of output signals using optical signals is possible.
以下、この発明の一実施例を図にっ−て説明する。第１
図において（１）は電力供給端子、（ＮＩＦ）はノイズ
フィルタ、（２）は（ＮＩＦ）出力端子、（Ｍ）はＮ？
接地端子、（ＲＩＧ）は出力電圧よ炒も高い電圧を受電
電圧とするスイッチング型安定化電源、（３）はＲＩＧ
入力端子、（４）はＲＩＧ出力端子、（５）は電力供給
線路、（６）は電源、（７）は出力信号伝送路である光
ファイバ、（ＯＯＮ）は光コネクタ、（］Ｌ！１０）は
電気信号を光信号に変換する電光変換器、（８）はロー
タリエンコーダ（ＰＬＯ）の検出信号出力回路、（９）
はＩｔＭ工防止用のシールドナースである。An embodiment of the present invention will be described below with reference to the drawings. 1st
In the figure, (1) is the power supply terminal, (NIF) is the noise filter, (2) is the (NIF) output terminal, and (M) is N?
Ground terminal, (RIG) is a switching type stabilized power supply whose receiving voltage is higher than the output voltage, (3) is RIG
Input terminal, (4) is RIG output terminal, (5) is power supply line, (6) is power supply, (7) is optical fiber which is output signal transmission line, (OON) is optical connector, (]L!10 ) is an electro-optical converter that converts electrical signals into optical signals, (8) is a rotary encoder (PLO) detection signal output circuit, (9)
is a shield nurse for preventing ITM.
上記（ＮＩＦ）は電源線路（５）により拾われて（ｐｂ
Ｇ）へと伝達されてくるノイズを端子（Ｋ）を経てケー
スへバイパスサセル。又はラインフィルタ内インピーダ
ンスで吸収する等によりその出力！ （２）でのノイズ
を著しく減少させる。その為（Ｒ１１！Ｇ）へ供給され
る電力のノイズは僅少となる。−力出力信号伝送路は光
信号路である為、ノイズを拾う事は無く更にＰＬＧ周辺
でのＩＩＩＭ工はケースによりじゃへ−され、電源回路
を含むロータリエンコータ回路へのノイズの流入は僅少
となる。一方（ＲＩＧ ）を例えばＤＯ２５Ｖ±２０％
をＤＯ５Ｖに変換する安定化電源であり変換効率８０％
で出力電流０，８ＡとするとＤＯ２５Ｖ＋２０％受電の
場合
ＤＯ２５７−２０％受電の場合
となり電力供給電線路の抵抗値を１〔Ω〕とすると電源
（６）は
ｇ５Ｘ１．２＋−〜２１５Ｘ０．８＋−即ち
３０．１’Ｆ 〜 ２０．２５の範囲で選択す
れば良い事となる。これは従来の５７：！：５％を供給
する場合の［源（６）の採るべき値５ Ｘ Ｏ，９５＋
０．８〜５ Ｘ １．０５ ＋０．８即ち
５．６５
６．０５
に比べ著しく裕度の高い電源で良い事を示す。The above (NIF) is picked up by the power line (5) and (pb
Noise transmitted to G) is bypassed to the case via terminal (K). Or its output by absorbing it with the impedance inside the line filter! (2) Significantly reduces noise. Therefore, the noise of the power supplied to (R11!G) is minimal. - Since the force output signal transmission path is an optical signal path, it does not pick up noise, and the IIIM work around the PLG is obstructed by the case, so there is little noise flowing into the rotary encoder circuit including the power supply circuit. becomes. On the other hand (RIG), for example, DO25V±20%
It is a stabilized power supply that converts DO5V to DO5V and has a conversion efficiency of 80%.
If the output current is 0.8A, DO25V + 20% power reception is DO257-20% power reception, and if the resistance value of the power supply line is 1 [Ω], the power supply (6) is g5X1.2+- to 215X0.8+-, i.e. It is sufficient to select it within the range of 30.1'F to 20.25. This is the conventional 57:! :When supplying 5%, the value to be taken for source (6) 5 X O, 95+
This shows that a power supply with a significantly higher margin than 0.8 to 5 x 1.05 +0.8, that is, 5.65 6.05, is sufficient.
又、光ファイバによる信号伝送は、例えば株式会社オプ
トス製ＤＬＲ−ＢＲ３００１、ＤＬＲ−ＢＮ３００１、
デュポンジャパン製フイイバコードＯＢエーム工Ｍ ２
５０ Ｌを用いれば実用上（本発明ではＤｏ〜５０ＫＨ
クロック伝送）は伝送信号の波形歪みの問題は無（Ｉｌ
ｊＭ）での伝送が可能である０なお上記実施例ではＰＬ
Ｇ用電源（ＲＲｌＧ）を直流電源としたが交流電源とし
ても良い。In addition, for signal transmission using optical fiber, for example, DLR-BR3001, DLR-BN3001, manufactured by Optos Co., Ltd.
Dupont Japan made fiber cord OB Aime M2
If 50L is used, it is practical (in the present invention, Do~50KH
clock transmission), there is no problem of waveform distortion of the transmission signal (Il
In the above embodiment, PL
Although the G power supply (RRlG) is a DC power supply, it may be an AC power supply.
又、信号伝送路は１本で記しであるが、正逆回転判別機
能を有するインクリメンタル型の場合２本、２相付きの
場合は３本、アブソリュート型の場合はその出力信号数
に対応するファイバ線を設けても良い。In addition, the number of signal transmission lines is shown as one, but in the case of an incremental type with forward/reverse rotation discrimination function, there are two, in the case of a two-phase type there are three, and in the case of an absolute type, there are fibers corresponding to the number of output signals. A line may be provided.
以上のように、この発明によれは電源部にノイズフィル
タを設け、出力信号線路を光化し、ジ−ルートケースを
用いたのでノイズに強く、降電圧形の安定化電源を設け
たので外部の供給電圧の許容範囲を大きく採れる。又、
光信号により長距離伝送が可能になる効果がある。As described above, according to the present invention, a noise filter is provided in the power supply section, the output signal line is made optical, and a G-root case is used, so it is resistant to noise, and a step-down voltage stabilized power supply is provided, so that external Allows for a wide allowable range of supply voltage. or,
The optical signal has the effect of enabling long-distance transmission.
第１図は、この発明の一実施例によるロータリエンコー
ダ装置のブロック図で、（ＭＰ）はノイズフィルタ、（
１） （２）はＮアの入出力端子、（ＲＩＧ）は安定化
電源、（３） （４）はＲＩＧの入出力端子、（５）は
電力供給線路、（６）は外部電源、（７）は光フアイバ
ケーブル、（ＯＯＮ）は光コネクタ、（ＩＩ！１０）は
電光変換器、（ＰＬＯ） ｄロータリエンコータ、（８
）ハロータリエンコーダ検出信号信号出力回路、（９）
はシールドケースを示す０
なお、図中、同一符号は同一、又は相当部分を示す。FIG. 1 is a block diagram of a rotary encoder device according to an embodiment of the present invention, where (MP) is a noise filter, (
1) (2) is the input/output terminal of NA, (RIG) is the stabilized power supply, (3) (4) is the input/output terminal of RIG, (5) is the power supply line, (6) is the external power supply, ( 7) is an optical fiber cable, (OON) is an optical connector, (II!10) is an electro-optical converter, (PLO) d rotary encoder, (8
) Hello encoder detection signal signal output circuit, (9)
0 indicates a shield case. In the figures, the same reference numerals indicate the same or equivalent parts.
Claims (1)
、 この電気信号出力を光信号に変換する電光変換器、この
光信号を外部へ伝送する伝送用の光ファイバを接続する
光コネクタ、 上記ロータリエンコーダ用の電力を供給すると共に上記
ロータリエンコーダの所定の必要電圧より高い電圧を供
給する外部電源に接続され、この外部電源からのノイズ
を除去するノイズフィルタ、このノイズフィルタを通し
た電力を上記ロータリエンコーダの所定の必要電圧に降
圧すると共に安定化する安定化電源、 少くとも上記ノイズフィルタ、安定化電源、電光変換器
、光コネクタを内蔵して電磁的にシールドするシールド
ケースを備えたロータリエンコーダ装置。[Claims] A rotary encoder that converts rotational input into an electrical signal output, an electro-optical converter that converts this electrical signal output into an optical signal, and an optical fiber that connects a transmission optical fiber that transmits this optical signal to the outside. a connector, connected to an external power supply that supplies power for the rotary encoder and a voltage higher than the predetermined required voltage of the rotary encoder, and a noise filter that removes noise from the external power supply; A stabilized power supply that steps down and stabilizes the power to the predetermined required voltage of the rotary encoder, and a shield case that electromagnetically shields at least the noise filter, stabilized power supply, electro-optical converter, and optical connector built in. rotary encoder device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1455489A JPH02222810A (en) | 1989-01-23 | 1989-01-23 | Rotary encoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1455489A JPH02222810A (en) | 1989-01-23 | 1989-01-23 | Rotary encoder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02222810A true JPH02222810A (en) | 1990-09-05 |
Family
ID=11864367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1455489A Pending JPH02222810A (en) | 1989-01-23 | 1989-01-23 | Rotary encoder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02222810A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009079981A (en) * | 2007-09-26 | 2009-04-16 | Railway Technical Res Inst | Optical communication type 3D sensing stone with built-in triaxial acceleration sensor and PIC microcomputer |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5780517A (en) * | 1980-11-07 | 1982-05-20 | Fuji Electric Co Ltd | Transducer circuit |
| JPS57105100A (en) * | 1980-12-23 | 1982-06-30 | Tokyo Shibaura Electric Co | Transducer system |
-
1989
- 1989-01-23 JP JP1455489A patent/JPH02222810A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5780517A (en) * | 1980-11-07 | 1982-05-20 | Fuji Electric Co Ltd | Transducer circuit |
| JPS57105100A (en) * | 1980-12-23 | 1982-06-30 | Tokyo Shibaura Electric Co | Transducer system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009079981A (en) * | 2007-09-26 | 2009-04-16 | Railway Technical Res Inst | Optical communication type 3D sensing stone with built-in triaxial acceleration sensor and PIC microcomputer |
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