JPS6041494B2 - Motion detection method for optical fiber terminal equipment - Google Patents
Motion detection method for optical fiber terminal equipmentInfo
- Publication number
- JPS6041494B2 JPS6041494B2 JP55053877A JP5387780A JPS6041494B2 JP S6041494 B2 JPS6041494 B2 JP S6041494B2 JP 55053877 A JP55053877 A JP 55053877A JP 5387780 A JP5387780 A JP 5387780A JP S6041494 B2 JPS6041494 B2 JP S6041494B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- terminal device
- optical fiber
- main device
- terminal
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
- G02B6/29346—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by wave or beam interference
- G02B6/29361—Interference filters, e.g. multilayer coatings, thin film filters, dichroic splitters or mirrors based on multilayers, WDM filters
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
- G02B6/29379—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device
- G02B6/2938—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device for multiplexing or demultiplexing, i.e. combining or separating wavelengths, e.g. 1xN, NxM
- G02B6/29388—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device for multiplexing or demultiplexing, i.e. combining or separating wavelengths, e.g. 1xN, NxM for lighting or use with non-coherent light
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
- G02B6/29379—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device
- G02B6/29395—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device configurable, e.g. tunable or reconfigurable
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Communication System (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Selective Calling Equipment (AREA)
Description
【発明の詳細な説明】
この発明は、複数の端末装置のスイッチの接続状態、非
接続状態を主装置において検知する、端末装置の動作検
知方式に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a terminal device operation detection method in which a main device detects the connected state and disconnected state of switches of a plurality of terminal devices.
例えば、鉄鋼圧延プラントでは工程ラインにそって多く
の監視、制御の為の端末装置が並んでおり、これらの端
末装置の動作、非動作を離れた場所にある主装置で検知
する必要がある。従来この種の検知は、主装置と端末装
置の間をそれぞれ電気ケーブルで結び、主装置において
各端末より伝送されてくる端末のスイッチの接続状態に
応じた電気信号を受信することにより行なわれていた。
しかし、圧延プラントなどにおける工程ラインに接する
地域では、電気ノイズが大量に発生している。したがっ
て従来の電気信号を用いた検知方式においては、電気ケ
ーブルに電気ノイズがのり、謀まった信号が発生するの
を防ぐために大がかりな電気シールド網を必要とすると
いう欠点があった。この発明はこの欠点を除去し、更に
簡単な構成を実現するために信号伝送路に光フアィバを
用い、主装置より連続した発光スペクトルの光を各端末
装置に送り、端末装置では各端末装置ごとに割り当てら
れた波長の光をスイッチの接続、非接続状態に応じて主
装置に送りかえす方式としたもので、以下図面について
詳細に説明する。For example, in a steel rolling plant, many terminal devices for monitoring and control are lined up along the process line, and the operation or non-operation of these terminal devices must be detected by a main device located at a remote location. Conventionally, this type of detection was performed by connecting the main device and the terminal devices with electrical cables, and receiving the electrical signals transmitted from each terminal at the main device according to the connection status of the terminal's switch. Ta.
However, large amounts of electrical noise are generated in areas adjacent to process lines in rolling plants and the like. Therefore, the conventional detection method using electric signals has the drawback that a large-scale electric shielding network is required to prevent electric noise from being carried on the electric cable and generating unintended signals. In order to eliminate this drawback and realize a simpler configuration, this invention uses optical fibers for the signal transmission path, and sends light with a continuous emission spectrum from the main device to each terminal device. The system uses a method in which light with a wavelength assigned to the switch is sent back to the main device depending on whether the switch is connected or disconnected.The drawings will be described in detail below.
図はこの発明の実施例を,示す図で端末装置が3つある
場合の例を示してL、る。The figure shows an example of an embodiment of the present invention in which there are three terminal devices.
1は主装置、2,3,4は各端末装置であり装置間の伝
送路には光フアイバ5が用いられて「、る。1 is the main device, 2, 3, and 4 are each terminal device, and an optical fiber 5 is used as a transmission path between the devices.
31は波長^.の光だけを透過する干渉フィル夕板、3
2は波長^2の光だけを透過する千渉フィルタ板、33
は波長^3の光だけを透過する干渉フィルタ板であり、
それぞれ反射板20と一組になっており、この組は図に
おいて矢印方向に移動し袋魔のスイッチが接続している
場合には干渉フィルタ板が光路中に置かれスイッチが遮
断している場合には反射板が光路中に置かれる。31 is the wavelength ^. Interference filter plate that transmits only the light of 3
2 is a Senwata filter plate that transmits only light of wavelength ^2, 33
is an interference filter plate that transmits only light of wavelength ^3,
Each pair is combined with a reflector plate 20, and this pair moves in the direction of the arrow in the figure, and when the blind switch is connected, an interference filter plate is placed in the optical path and when the switch is blocking it. A reflector is placed in the optical path.
この移動は例えば電磁石などを用いて行なわれる。主装
置1には波長^,,入2,^3の成分を含む連続した発
光スペクトルを持った光源9と1本の光路より入射した
光を波長によって独立に分離する機能を有した光波長分
波装置が設置されている。連続して発光スペクトルを持
った光源9には例えばタングステンランプ、ハロゲンラ
ンプなどを用いる事ができる。又光波長分波装置10に
はプリズムを用いた分波装置、クレーティングを用いた
分波装置、干渉フィル夕を用いた分波装置を用いる事が
できる。光源9より発せられた連続スベクト光はしンズ
7により集光され光フアィバに入射し光フアィバ5の中
を伝播する。光フアィバ5を伝播した連続スペクトル光
は分配器6によって分割され各端末装置2,3,4に導
かれる。ここで3つの端末装置2,3,4の中での動作
は同じであるので端末装置2においての動作を説明する
。端末装置2に導かれた連続スペクトル光はしンズ8に
より平行光東に変換される。平行光東は光路に何の障害
物がなければレンズ7によりそのまま出力側の光フアィ
バ5に入射し分配器6を通って主装置1の光波長分波器
1川こ導かれることになるが、端末装置のスイッチが非
接続状態にある場合は反射板20が光路に挿入されるた
めに端末装置からの光は遮断される。これに対してスイ
ッチが接続状態にある場合は波長入,の光だけを透過す
る干渉フィルタ板31が光路に挿入されるために連続ス
ペクトルに光のうち波長入,の光だけを干渉フィルタ板
31を透過して光波長分波器1川こ導かれる。端末装置
2,3においても同様の動作をするが干渉フィル夕板3
2,33の透過波長城がそれぞれ入2,入3と異なるた
め、スイッチ接続時に光波長分波器101こ導かれる波
長が異なる。主装置1の光波長分波器1川こ光フアィバ
により導かれた波長入.,入2,入3の光は独立に取り
出される。したがってここに例えば光を電気信号に変換
する受光素子アレイ40を設置し、波長入,の光は素子
41、波長^2の光は素子42、波長^3の光は43で
受けるように設定すれば、端末装置2,3,4のスイッ
チの接続、非接続状態は受光素子の信号を検出する事に
より容易に検知できる。以上述べたように本発明による
端末装置動作検知方式では信号を光フアィバにより伝送
するので、電気ノイズの影響を受けないという利点があ
る。又各端末装置内には電気回路、及び発光、受光素子
等の一切の能動素子を含んでいないため構成が簡単であ
り信頼性が高いという利点がある。なお、以上は端末装
置の動作、非動作を確認する方式について述べたが、例
えば回転軸をもつような端末装置がいくつかあってその
それぞれの回転数を主装置で知りたい場合、これは、各
端末において上記回転軸に連結された回転軸を有する円
板の円周上に干渉フィルタ板と反射板を交互に配して光
路中に設置すれば、主菱直において光のパルス列を検出
する事により容易に実現できるので、この発明は回転軸
を有する端末の回転数検出方式としても使用できる。以
上のように、この発明に係る光フアィバ端末装置の動作
検知方式では、伝送路に光フアィバを用いることにより
電気ノイズを防ぐことができ、謀まった情報が伝送路に
流れるのを防ぐことができるという効果を有する。This movement is performed using, for example, an electromagnet. The main device 1 includes a light source 9 that has a continuous emission spectrum including components of wavelengths ^, , 2, and 3, and a light source 9 that has a function of independently separating light incident from one optical path according to wavelength. A wave device is installed. For example, a tungsten lamp, a halogen lamp, etc. can be used as the light source 9 having a continuous emission spectrum. Further, as the optical wavelength demultiplexing device 10, a demultiplexing device using a prism, a demultiplexing device using a crating, or a demultiplexing device using an interference filter can be used. The continuous spectrum light emitted from the light source 9 is focused by the lens 7, enters the optical fiber, and propagates through the optical fiber 5. The continuous spectrum light propagated through the optical fiber 5 is divided by a distributor 6 and guided to each terminal device 2, 3, 4. Here, since the operations in the three terminal devices 2, 3, and 4 are the same, the operation in the terminal device 2 will be explained. The continuous spectrum light guided to the terminal device 2 is converted into parallel light by the lens 8. If there are no obstacles in the optical path, the parallel light will enter the optical fiber 5 on the output side as it is through the lens 7, pass through the distributor 6, and be guided to the optical wavelength demultiplexer 1 of the main device 1. When the switch of the terminal device is in the disconnected state, the light from the terminal device is blocked because the reflection plate 20 is inserted into the optical path. On the other hand, when the switch is in the connected state, the interference filter plate 31 that transmits only the light of the wavelength input is inserted into the optical path, so that only the light of the wavelength input of the light is included in the continuous spectrum. The light passes through and is guided to an optical wavelength demultiplexer. The terminal devices 2 and 3 operate in a similar manner, but the interference filter plate 3
Since the transmission wavelength ranges of inputs 2 and 33 are different for inputs 2 and 3, the wavelengths guided by the optical wavelength demultiplexer 101 when the switch is connected are different. Optical wavelength demultiplexer 1 of main device 1 This wavelength input is guided by optical fiber. , input 2, and input 3 are taken out independently. Therefore, for example, a light-receiving element array 40 for converting light into an electrical signal is installed here, and settings are made so that light of the input wavelength is received by the element 41, light of the wavelength ^2 is received by the element 42, and light of the wavelength ^3 is received by the element 43. For example, the connected or disconnected states of the switches of the terminal devices 2, 3, and 4 can be easily detected by detecting the signals of the light receiving elements. As described above, the terminal device operation detection method according to the present invention has the advantage that it is not affected by electrical noise because the signal is transmitted through the optical fiber. Furthermore, since each terminal device does not include an electric circuit or any active elements such as light emitting and light receiving elements, it has the advantage of a simple configuration and high reliability. The above has described a method for checking whether a terminal device is operating or not, but for example, if there are several terminal devices with rotating shafts and you want to know the rotation speed of each of them from the main device, this method is as follows. If interference filter plates and reflection plates are arranged alternately on the circumference of a disk having a rotation axis connected to the rotation axis at each terminal and installed in the optical path, a pulse train of light can be detected at the main rhombus. Since the present invention can be easily realized, the present invention can also be used as a rotation speed detection method for a terminal having a rotating shaft. As described above, in the operation detection method of the optical fiber terminal device according to the present invention, electrical noise can be prevented by using optical fibers in the transmission path, and it is possible to prevent malicious information from flowing into the transmission path. It has the effect of being able to.
又、端末装贋内に一切の能動素子を含んでいないために
、信頼性が高いという利点がある。Furthermore, since the terminal equipment does not include any active elements, it has the advantage of high reliability.
図はこの発明による方式の−実施例を示す図である。 The figure shows an embodiment of the system according to the invention.
Claims (1)
を主装置において検知する方式において、主装置、端末
装置間の信号伝送路として用いられる光フアイバと、こ
の主装置に設けられ、連続した発光スペクトルを持つ一
つの光源と、複数の異なつた波長成分の光を独立して取
り出す機能を有する光波長成分装置と、上記各端末装置
にそれぞれある特定波長の光だけを反射、あるいは透過
するフイルタとを備え、主装置からは前記連続した発光
スペクトルを持つ光をすべての端末に光フアイバを介し
て伝送し、各端末装置においてこの光のうちあらかじめ
各端末装置に割り当てられた特定の波長の光だけをスイ
ツチの接続、非接続状態に応じて主装置に送り返すよう
にしたことを特徴とする光フアイバ端末装置動作検知方
式。1. In a method in which the main device detects the connected and disconnected states of switches of multiple terminal devices, an optical fiber used as a signal transmission path between the main device and the terminal device and a continuous light emitting device installed in this main device are used. A light source with a spectrum, an optical wavelength component device that has the function of independently extracting light of a plurality of different wavelength components, and a filter that reflects or transmits only light of a specific wavelength in each terminal device. The main device transmits light with the continuous emission spectrum to all terminals via optical fibers, and each terminal device transmits only light with a specific wavelength assigned to each terminal device in advance. An optical fiber terminal device operation detection method characterized in that the signal is sent back to the main device depending on whether the switch is connected or disconnected.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55053877A JPS6041494B2 (en) | 1980-04-23 | 1980-04-23 | Motion detection method for optical fiber terminal equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55053877A JPS6041494B2 (en) | 1980-04-23 | 1980-04-23 | Motion detection method for optical fiber terminal equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56149840A JPS56149840A (en) | 1981-11-19 |
JPS6041494B2 true JPS6041494B2 (en) | 1985-09-17 |
Family
ID=12954968
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55053877A Expired JPS6041494B2 (en) | 1980-04-23 | 1980-04-23 | Motion detection method for optical fiber terminal equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6041494B2 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5925439A (en) * | 1982-08-02 | 1984-02-09 | Stanley Electric Co Ltd | Signal transmitter using optical signal |
JPS6024504A (en) * | 1983-07-21 | 1985-02-07 | Honda Motor Co Ltd | Optical selector |
JPS6021707U (en) * | 1983-07-21 | 1985-02-14 | 本田技研工業株式会社 | light selector |
JPS6021708U (en) * | 1983-07-21 | 1985-02-14 | 本田技研工業株式会社 | Optical cable for optical multiplex communication equipment |
JPS6028706U (en) * | 1983-08-02 | 1985-02-26 | 本田技研工業株式会社 | light selector |
JPS60133407A (en) * | 1983-12-21 | 1985-07-16 | Honda Motor Co Ltd | Optical switch device |
JPS6335344U (en) * | 1986-08-22 | 1988-03-07 | ||
US5195162A (en) * | 1987-12-16 | 1993-03-16 | General Motors Corporation | Planar polymer light guide methods and apparatus |
US7262918B1 (en) * | 2006-09-06 | 2007-08-28 | Wafermasters Incorporated | Light beam conditioner |
CN102353630B (en) * | 2011-06-28 | 2013-08-07 | 重庆大学 | Continuous spectrum light source |
CA2884839A1 (en) * | 2012-09-14 | 2014-03-20 | The Gillette Company | Rfid transponder comprising sensor element |
-
1980
- 1980-04-23 JP JP55053877A patent/JPS6041494B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS56149840A (en) | 1981-11-19 |
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