JPS6398514A - Angle-of-rotation detector - Google Patents
Angle-of-rotation detectorInfo
- Publication number
- JPS6398514A JPS6398514A JP24583486A JP24583486A JPS6398514A JP S6398514 A JPS6398514 A JP S6398514A JP 24583486 A JP24583486 A JP 24583486A JP 24583486 A JP24583486 A JP 24583486A JP S6398514 A JPS6398514 A JP S6398514A
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- reference voltage
- output
- amplifier
- slit
- 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
- 230000003287 optical effect Effects 0.000 claims abstract description 9
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 8
- 239000000835 fiber Substances 0.000 abstract description 22
- 238000001514 detection method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000000284 extract Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Optical Transform (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明ハ自動機のモータのコントロールツタめの信号
を検出する回転角検出装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a rotation angle detection device for detecting a control signal of a motor of an automatic machine.
第５図は従来の回転角検出装置を示す断面図であり、図
において、Ｃ１）はモータ、（２）はモータにより回転
する回転軸、（３）は軸受け、（４）はスリットを通り
ぬけた光を反射させる反射板、（５）はモータの回転に
より回転するスリット、（６）はファイバの発光口、（
ｎｋｉ ７７ イ／（、（８）けＬｍ！Ｄ、（９）は反
射板から反射された光を受は取るホトダイオード、（１
０けホトダイオードで受けた信号を処理する信号制御部
、（社）は光をスリットを通して反射板（４）に当てる
ことにより信号を取り出す回転角検出部である。FIG. 5 is a sectional view showing a conventional rotation angle detection device. In the figure, C1) is a motor, (2) is a rotating shaft rotated by the motor, (3) is a bearing, and (4) is a shaft that passes through a slit. (5) is a slit that rotates with the rotation of the motor, (6) is a fiber light emitting port, (
nki 77 I/(, (8) ke Lm!D, (9) is a photodiode that receives and takes the light reflected from the reflector, (1
The signal control unit that processes the signal received by the zero photodiode is a rotation angle detection unit that extracts a signal by applying light to the reflection plate (4) through a slit.
また第６図は、信号制御部αＯの回路図であり、Ｃ２は
ホトダイオードで受けた出力を増幅するアンプであり、
０けコンパレータであり、Ｃ４はコンパレータの基準電
圧発生装置である。FIG. 6 is a circuit diagram of the signal control unit αO, and C2 is an amplifier that amplifies the output received by the photodiode.
It is a zero comparator, and C4 is a reference voltage generator for the comparator.
また第７図、第８図は、回転角検出部０の回転するスリ
ット（５）とファイバの発光口（６）の間の断面図であ
る。7 and 8 are cross-sectional views between the rotating slit (5) of the rotation angle detection unit 0 and the light emitting port (6) of the fiber.
従来の回転角検出装置は、上記のように構成きれ％ＬＫ
Ｄ（８１を発光させ、ファイバ（７）を通して光をファ
イバの発光口（６）から、スリットを通して反射板（４
）に反射させ、その反射光をホトダイオード（９）に当
てることにより、出力電圧を発生させ、アンプ面により
増幅し、コンパレータＧ３によって、アンプにより増幅
された出力電圧と基準電圧発生装置［相］により調整さ
れた基準電圧により、パルスに変換し、その情報を読み
取るようになっている。The conventional rotation angle detection device is configured as described above.
D (81) is made to emit light, and the light is passed through the fiber (7) from the light emitting port (6) of the fiber and through the slit to the reflection plate (4).
), and the reflected light is applied to the photodiode (9) to generate an output voltage, which is amplified by the amplifier surface, and by the comparator G3, the output voltage amplified by the amplifier and the reference voltage generator [phase] are combined. The regulated reference voltage converts it into pulses and reads the information.
上記のような従来の回転角検出装置では、ファイバーの
長さの変化、及びＬＥＤやアンプなどの温度変化により
、ホトダイオードの受ける出力が変化するため、コンパ
レータの出力のパルスがひずまないように、基準電圧発
生装置ωによって、基準電圧を調整しなければならない
という問題点があった。In the conventional rotation angle detection device as described above, the output received by the photodiode changes due to changes in the length of the fiber and changes in the temperature of the LED or amplifier. There is a problem in that the reference voltage must be adjusted by the voltage generator ω.
この発明は、かかる問題点を解決するためになされたも
ので、ファイバーの長さの変化、及びＬＥＤやアンプな
どの温度変化により、ホトダイオードの受ける出力が変
化しても、無調整でコンパレータの基準電圧を設定でき
ることを目的とする。This invention was made to solve this problem, and even if the output received by the photodiode changes due to changes in the length of the fiber or changes in the temperature of the LED or amplifier, the comparator standard can be adjusted without adjustment. The purpose is to be able to set the voltage.
この発明に係る回転角検出装置は、信号発生相とけ別に
、ＬＥＤより発光した光をスリットで、遮断する時がな
い相、つまり直流出力をもつファイバ相を取り付けたも
のである。The rotation angle detection device according to the present invention is equipped with a phase in which the light emitted from the LED is not interrupted by a slit, that is, a fiber phase having DC output, in addition to the signal generation phase.
この発明においては、ファイバの長さ、及びＬＥＤやア
ンプの温度変化による光信号発生相の変動を基準電圧発
生相が相殺する。In this invention, the reference voltage generation phase cancels out fluctuations in the optical signal generation phase due to fiber length and temperature changes of the LED and amplifier.
第１図はこの発明の一実施例を示す断面図であり、（１
）〜αｌ）、α４１，１１５は、上記従来装置と全く同
一のものであり、異なる点は、ファイバの相が１つ増え
ている点である。FIG. 1 is a cross-sectional view showing one embodiment of the present invention.
) to αl), α41, and 115 are exactly the same as the conventional device described above, and the difference is that the number of fiber phases is increased by one.
また第２図は信号制御部ｉ１Ｇの回路図であり、（７）
〜（９） ｓ ０２〜α４は上記従来装置と全く同一の
ものであり、コンパレータの基準電圧を設定する相似が
存在している。FIG. 2 is a circuit diagram of the signal control unit i1G, (7)
~(9) s02~α4 are completely the same as the above conventional device, and there is a similarity in setting the reference voltage of the comparator.
また第３図第４図は、回転角検出部αＤの回転するスリ
ット（５）とファイバの発光口（６）との間の断面図で
あり、（２’ ＋ （５１、（６） 、 Ｃ４１け従来
装置と全く同一のものであり、基準電圧発生相似が存在
している。3 and 4 are cross-sectional views between the rotating slit (5) of the rotation angle detection unit αD and the light emitting port (6) of the fiber, and (2' + (51, (6), C41) This is exactly the same as the conventional device, and there is a similarity in reference voltage generation.
上記のように構成きれた回転角検出装置では、４つの同
じ特性の丁Ｊ Ｚ Ｄ ｆ７＞をそれぞれのファイバ相
で発光させ、第４図のファイバの発光口（６）から、そ
れぞれのスリットを通して、光を反射板に当て、反射光
をホトダイオード（９）に当てるが、その際に基準電圧
発生相では、第４図の基準電圧発生相［相］のファイバ
の発光口（６）の所のスリットと、そのスリットと重さ
なるスリットの方向が縦と横になるようにセットし、ホ
トダイオード（９）で受ける光が一定出力、つまり直流
出力になるようにする。また第２図で、基準電圧発生相
似のアンプ面で直流出力を増幅し、他の３つの光信号発
生相のフンパレータの基準電圧設定端子にその直流出力
を入力し、光信号発生相のアンプからの出力と合わせて
パルスを発生させるようにしである。In the rotation angle detection device configured as described above, four fibers having the same characteristics are emitted in each fiber phase, and the light is emitted from the light emitting port (6) of the fiber in Fig. 4 through each slit. , the light is applied to the reflector plate and the reflected light is applied to the photodiode (9), but at this time, in the reference voltage generation phase, the light emitting port (6) of the fiber of the reference voltage generation phase [phase] in Fig. 4 is The slit and the slit that overlap the slit are set so that the directions of the slit are vertical and horizontal, so that the light received by the photodiode (9) has a constant output, that is, a DC output. In addition, in Fig. 2, the DC output is amplified by an amplifier surface similar to the reference voltage generation phase, and the DC output is inputted to the reference voltage setting terminal of the amplifier of the other three optical signal generation phases, and then from the amplifier of the optical signal generation phase. The pulse is generated in conjunction with the output of the
この発明は以上説明したとおり、３つの光信号発生相の
他に、コンパレータの基準電圧を設定する相を設けるこ
とにより、Ｌ］！ｉＤやアンプの温度変化やファイバ長
の変化に無調整で、コンパレータからひずみのないパル
スを発生させることができる。As explained above, the present invention provides a phase for setting the reference voltage of the comparator in addition to the three optical signal generation phases, so that L]! It is possible to generate distortion-free pulses from the comparator without adjusting for temperature changes in the iD or amplifier or changes in fiber length.
第１図はこの発明の一実施例を示す断面図、第２図はこ
の発明の信号制御部の回路図、第３図第４図はこの発明
の回転角検出部の回転するスリットとファイバの発光口
との間の断面図、第５図は従来の回転角検出装置を示す
断面図、第６図は従来装置の信号制御部の回路図、第７
図第８図は従来装置の回転角検出部の回転するスリット
とファイバの発光口との間の断面図である。
図において、（４）は反射板、Ｃ５）は回転するスリッ
） 、（６）はファイバの発光口、（７）はファイバ、
Ｃ４は光信号発生相、卵は基準電圧発生相である。
なお、各図中、同一符号は同一または相当部分を示す。FIG. 1 is a sectional view showing an embodiment of the present invention, FIG. 2 is a circuit diagram of a signal control section of the present invention, and FIG. 3 and FIG. 5 is a sectional view showing a conventional rotation angle detection device, FIG. 6 is a circuit diagram of a signal control section of the conventional device, and FIG.
FIG. 8 is a sectional view between the rotating slit of the rotation angle detecting section and the light emitting port of the fiber in the conventional device. In the figure, (4) is a reflecting plate, C5) is a rotating slit), (6) is a fiber light emitting port, (7) is a fiber,
C4 is an optical signal generation phase, and egg is a reference voltage generation phase. In each figure, the same reference numerals indicate the same or corresponding parts.
Claims (1)
回転体の回転により変調する光変調器、この変調光を電
気信号に変換する光電変換器およびこの電気信号を増幅
する増幅器とからなり互に異なる変調を与える以外各構
成要素が互にほゞ等しい特性を有する複数の光信号発生
相と 前記光信号発生相ごとに設けられその増幅された電気信
号をそれぞれ信号入力端子から得て、互の組み合せによ
り、前記回転体の回転角を復元可能な論理信号を出力す
る複数のコンパレータと回転により変調を与えないこと
を除いて、前記光信号発生相と同一構成であり、その出
力電気信号を前記全てのコンパレータのレファレンス入
力端子に与える基準電圧発生相とを 備えた回転角検出装置。(1) Both include a light source, an optical modulator that modulates the light from this light source by the rotation of the same rotating body to be measured, a photoelectric converter that converts this modulated light into an electrical signal, and an amplifier that amplifies this electrical signal. a plurality of optical signal generation phases each having substantially the same characteristics except for providing mutually different modulation; The configuration is the same as that of the optical signal generation phase, except that a plurality of comparators output logic signals capable of restoring the rotation angle of the rotating body by mutual combination, and no modulation is applied due to rotation, and the output thereof and a reference voltage generation phase that applies electrical signals to reference input terminals of all of the comparators.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24583486A JPS6398514A (en) | 1986-10-15 | 1986-10-15 | Angle-of-rotation detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24583486A JPS6398514A (en) | 1986-10-15 | 1986-10-15 | Angle-of-rotation detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6398514A true JPS6398514A (en) | 1988-04-30 |
Family
ID=17139541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24583486A Pending JPS6398514A (en) | 1986-10-15 | 1986-10-15 | Angle-of-rotation detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6398514A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0329819A (en) * | 1989-06-28 | 1991-02-07 | Matsushita Electric Ind Co Ltd | Compensation circuit for detection signal of optical type encoder |
-
1986
- 1986-10-15 JP JP24583486A patent/JPS6398514A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0329819A (en) * | 1989-06-28 | 1991-02-07 | Matsushita Electric Ind Co Ltd | Compensation circuit for detection signal of optical type encoder |
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