JPS60181802A - Device working in response to light - Google Patents
Device working in response to lightInfo
- Publication number
- JPS60181802A JPS60181802A JP3698084A JP3698084A JPS60181802A JP S60181802 A JPS60181802 A JP S60181802A JP 3698084 A JP3698084 A JP 3698084A JP 3698084 A JP3698084 A JP 3698084A JP S60181802 A JPS60181802 A JP S60181802A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- pulse width
- pulse
- converter
- optical
- 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.)
- Granted
Links
Classifications
-
- 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
- G01D5/12—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 using electric or magnetic means
- G01D5/244—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 using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
- G01D5/246—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 using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains by varying the duration of individual pulses
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Feedback Control In General (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の属する技術分野〕
本発明は伝送された光信号を受光し、この光信号のもつ
エネルギーによって作動するとともに、これに含まれる
信号に対応した空気圧信号を出力する光応動装置に関す
るものである。[Detailed description of the invention] [Technical field to which the invention pertains] The present invention receives a transmitted optical signal, operates with the energy of this optical signal, and outputs a pneumatic signal corresponding to the signal included in the optical signal. This invention relates to a photoresponsive device.
従来より光信号を光ファイバを介して伝送し、受信端側
で電気信号に変換し、信号処理するシステムは公知であ
るが、伝送された光信号のもつエネルギーによって受信
端が動作し、光信号に含まれる操作信号に応じた空気圧
信号を出力するような装置は、これまでなかった。Conventionally, systems have been known in which optical signals are transmitted via optical fibers, converted into electrical signals at the receiving end, and processed. Until now, there has been no device that outputs a pneumatic signal in response to an operation signal included in the air pressure signal.
この様々装置を実現するためには、受信端側での消費電
力をできるだけ少なくする必要があり、また、応答時間
を短かくする必要がある。 ？〔本発明の目的〕
本発明は、伝送された光信号のもつエネルギーによって
動作するように消費電力が小さく、応答時間の速い光応
動装置を実現しようとするものである。In order to realize these various devices, it is necessary to reduce the power consumption at the receiving end as much as possible, and it is also necessary to shorten the response time. ? [Object of the present invention] The present invention aims to realize a light-responsive device with low power consumption and quick response time, which operates using the energy of a transmitted optical signal.
本発明に係る装置は、送信端側から光ファイバを介して
送られる光信号を受光する光電変換手段−と、この光電
変換手段から得られる電力によって作動し、光信号に含
まれるパルス状の信号を入力しこの信号を処理して操作
信号に対応したパルス幅信号を出力するパルス幅信号変
換器と、一端が空気圧供給源に接続され他端がタンクに
接続された第１の空気スイッチと、一端が開放し他端が
タンクに接続された第２の空気スイッチとで構成され、
第１．第２の空気スイッチはパルス幅信号変換器からの
パルス幅信号に対応してオン、オフ時間が制御される点
に構成上の特徴がある。The device according to the present invention includes a photoelectric conversion means for receiving an optical signal sent from a transmission end side via an optical fiber, and a device operated by the power obtained from the photoelectric conversion means, and converts a pulsed signal included in the optical signal. a pulse width signal converter that processes the signal and outputs a pulse width signal corresponding to the operation signal; a first air switch that has one end connected to the air pressure supply source and the other end connected to the tank; a second air switch having one end open and the other end connected to the tank; The second air switch is characterized in that its on and off times are controlled in response to a pulse width signal from a pulse width signal converter.
第１図は本発明に係る装置の一例を示す構成ブロック図
である。この図において、ＴＲは送信端、ＡＣは操作端
、ＯＦは送信端ＴＲと操作端ＡＣとを結ぶ光ファイバで
ある。FIG. 1 is a block diagram showing an example of a device according to the present invention. In this figure, TR is a transmitting end, AC is an operating end, and OF is an optical fiber connecting the transmitting end TR and the operating end AC.
送信端ＴＲ［おいて、１は光ファイバＯＦの一端に結合
している例えばレーザダイオ−）’ （ＬＤ ）のよう
な光源、２はこの光源を断続するスイッチで、後述する
ようなパルス信号によって駆動される０第２図は、送信
端ＴＲから光ファイバＯＦを介して伝送される光信号の
形態の一例を示す波形図である。送信端ＴＲからは、こ
の図に示すように、連続する光信号（パワー光）と、こ
の光信号を断続することによって生ずるパルス状の信号
とが伝送される。At the transmitting end TR, 1 is a light source such as a laser diode (LD) coupled to one end of the optical fiber OF, and 2 is a switch that switches this light source on and off, and is driven by a pulse signal as described below. FIG. 2 is a waveform diagram showing an example of the form of an optical signal transmitted from the transmission end TR via the optical fiber OF. As shown in this figure, a continuous optical signal (power light) and a pulse-like signal generated by interrupting this optical signal are transmitted from the transmitting end TR.
ここで、パルス状の信号は、３個のパルスｐ１゜Ｐ２．
Ｐ５で操作信号を構成しており、パルスｐ１とｐ５の
相互間の時間Ｔ８が基準パルス幅の情報を、パルスｐ１
とｐ２の相互間の時間ｔＸがパルス幅、すなわち操作量
の情報を含むようにしである。従って、受信端側では、
Ｔｓ、ｔｘを計測し、ｔＸ／’ｒｓｔ；演算することに
よって、操作信号を得ることができるようになっている
。Here, the pulse-like signal consists of three pulses p1°P2 .
P5 constitutes an operation signal, and the time T8 between pulses p1 and p5 provides information on the reference pulse width.
The time tX between p2 and p2 includes information on the pulse width, that is, the manipulated variable. Therefore, at the receiving end,
The operation signal can be obtained by measuring Ts and tx and calculating tX/'rst;.
なお、この例では、各パルスｐ１〜ｐ３はノくツー光を
断にすることによって発生させるもので、これらのパル
スのパルス幅はできるだけ細いパルス幅であることが望
ましい。また、各パルスは、パワー光の強さく振幅）を
小さくすることによって発生させてもよいし、また、パ
ワー光とは異々りた波長としてもよい。In this example, each of the pulses p1 to p3 is generated by cutting off the light beam, and it is desirable that the pulse width of these pulses be as narrow as possible. Further, each pulse may be generated by reducing the intensity and amplitude of the power light, or may have a wavelength different from that of the power light.
第１図に戻り、操作端（受信端）ＡＣにおいて。Returning to FIG. 1, at the operating end (receiving end) AC.
３は光電変換部で、光ファイバＯＦの他端から出射する
光を受光する光電池３０、この光電池３０から得られる
電力を蓄電するとともに平滑させる抵抗３１゜コンデン
サ３２及びレギュレータ３５とで構成されている。４は
光電変換部３から得られる電力が供給されて作動するパ
ルス幅信号変換器で、コンデンサ４０を介して光信号に
含まれているパルス状の信号が印加され、この信号を処
理して操作量に対応したパルス幅信号を出力する。、な
お、ここでは、パルス幅信号変換器４は、入力されるパ
ルス状信号のパルス相互間の時間ｔｘとＴｓを計測し、
ｔＸ／Ｔｓを演算してこれに対応した信号ｅＩを出力す
る信号処理回路４１と、ここからの信号ｅ１と後述する
帰還信号・ｆとの偏差Ｓをめる加算回路４２と、偏差信
号６に対応したパルス幅信号を出力するパルス幅信号発
生回路４３とで構成されている。Reference numeral 3 denotes a photoelectric conversion unit, which is composed of a photovoltaic cell 30 that receives light emitted from the other end of the optical fiber OF, a 31° resistor capacitor 32 for storing and smoothing the electric power obtained from the photovoltaic cell 30, and a regulator 35. . Reference numeral 4 denotes a pulse width signal converter that is operated by being supplied with electric power obtained from the photoelectric converter 3, to which a pulsed signal included in the optical signal is applied via a capacitor 40, and this signal is processed and operated. Outputs a pulse width signal corresponding to the amount. , Incidentally, here, the pulse width signal converter 4 measures the inter-pulse times tx and Ts of the input pulsed signal,
A signal processing circuit 41 that calculates tX/Ts and outputs a signal eI corresponding to this, an adder circuit 42 that calculates the deviation S between the signal e1 from this and a feedback signal/f to be described later, and a deviation signal 6. The pulse width signal generation circuit 43 outputs a corresponding pulse width signal.
５．６はパルス幅信号変換器４からのパルス幅信号に応
じてオン、オフ動作する第１．第２の空気圧スイッチで
、ここでは、空気圧によって変位するダイアフラム５１
． ＩＮを含んで構成されるものが用すである。７は空
気圧供給源、８はタンク、８０は出力端子、９は空気圧
電気変換手段で、タンク８の出力空気圧に対応し六電気
信号＠ｆを、パルス幅信号変換器４に負帰還している。Reference numeral 5.6 indicates a first switch which is turned on and off in accordance with the pulse width signal from the pulse width signal converter 4. A second pneumatic switch, here a diaphragm 51 displaced by air pressure.
．． The one that includes IN is used. 7 is a pneumatic pressure supply source, 8 is a tank, 80 is an output terminal, and 9 is a pneumatic-electrical conversion means, which negatively feeds an electric signal @f corresponding to the output air pressure of the tank 8 to the pulse width signal converter 4. .
第１の空気圧スイッチ５において、スイッチの入力端側
に相当する管５２は、空気圧供給源７に接続され、ま゛
た出力端に相当する管５３は、タン°り８に接続されて
おυ、ダイアフラム５１が変位することにより、管５２
と５３の間がオン、オフする。ダイアフラム５１を変位
させるためのスイッチ制御用空気圧が導びかれる管５４
の一端は、ノズル５５が接続され、また、このノズル５
５はパルス幅信号変換器４からのパルス幅信号Ｔｄ１に
対応して変位するフラッパ５６に対抗している。In the first pneumatic switch 5, a pipe 52 corresponding to the input end of the switch is connected to the pneumatic supply source 7, and a pipe 53 corresponding to the output end is connected to the tank 8. , by displacing the diaphragm 51, the tube 52
and 53 are turned on and off. A pipe 54 to which switch control air pressure for displacing the diaphragm 51 is guided.
One end is connected to a nozzle 55, and this nozzle 5
5 opposes a flapper 56 that is displaced in response to the pulse width signal Td1 from the pulse width signal converter 4.
第２の空気圧スイ、チロにおいて、スイッチの入力端側
に相当する管６２は開放し、また出力端に相当する管６
３は、タンク８に接続されている。また、スイッチ制御
用空気圧が導ひかれる管６４の一端は、ノズル６５が接
続され、また、このノズル６５は、パルス幅信号変換器
４からのパルス幅信号Ｔｄ２に対応して変位するフラッ
パ６６に対抗している。In the second pneumatic switch, Chiro, the pipe 62 corresponding to the input end side of the switch is open, and the pipe 62 corresponding to the output end side of the switch is open.
3 is connected to tank 8. A nozzle 65 is connected to one end of the pipe 64 through which the switch control air pressure is introduced, and this nozzle 65 is connected to a flapper 66 that is displaced in response to the pulse width signal Td2 from the pulse width signal converter 4. I'm fighting against it.
なお、ノズル５５．６’ｉには、空気圧供給源７からの
空気圧が絞り５７．６７を介して供給されている。Note that air pressure from the air pressure supply source 7 is supplied to the nozzle 55.6'i via a restriction 57.67.
まり、フラッパ５６’、６６は、例えばパルスモータで
構成され、パルス幅に対応した時間だけ、矢印方向に変
位する。In other words, the flappers 56' and 66 are constructed of, for example, pulse motors, and are displaced in the direction of the arrow for a time corresponding to the pulse width.
このように構成した装置Ω動作は次の通りである。The operation of the device configured as described above is as follows.
送信端ＴＲからは、操作端ＡＣ側に光ファイバＯＦを介
して、第２図に示されるように、パルス相互間の間隔に
情報をもつパルスを含む光信号が伝送される。操作端Ａ
Ｃの光電変換部５は、伝送された光信号を電気信号に変
換し、パルス幅信号変換器４の作動電力として供給する
とともに、パルス信号はコンデンサ４０を介してパルス
幅信号変換器４に印加される。このパルス幅信号変・換
器４において、信号処理回路４１は、例えばロジ、り回
路、カウンタ、サンプルホールド回路を含んで構成され
ており、各パルスの相互間の間隔ｔｘ、Ｔ８を計測する
とともに、ｔＸ／Ｔｓを演算し、この演算結果に対応し
た信号ｅＩを出力する。また、パルス幅発生回路４３は
、信号処理回路４１からの信号ｅｒａ、帰還信号ｅ。As shown in FIG. 2, an optical signal containing pulses with information in the intervals between the pulses is transmitted from the transmitting end TR to the operating end AC via the optical fiber OF. Control end A
The photoelectric conversion unit 5 of C converts the transmitted optical signal into an electric signal and supplies it as operating power to the pulse width signal converter 4, and the pulse signal is applied to the pulse width signal converter 4 via the capacitor 40. be done. In this pulse width signal converter 4, the signal processing circuit 41 includes, for example, a logic circuit, a counter, and a sample-and-hold circuit, and measures the intervals tx and T8 between each pulse. , tX/Ts, and outputs a signal eI corresponding to the result of this calculation. Further, the pulse width generation circuit 43 receives the signal era and the feedback signal e from the signal processing circuit 41.
との偏差εを入力し、これに対応したパルス間隔Ｔｄの
正負逆方向のパルス間隔信号を偏差６の符号に応じて切
換え、２つの出力端子から例えば第３（イ）に示すパル
ス間隔Ｔｄ１のパルス間隔信号は、パルスＰＨで第１の
空気圧スイッチ５のフラツノラ６を矢印方向に変位させ
、パルスＰＬで元に戻す。したがって７ラツパ５６はＴ
ｄｌの間、矢印方向に変位している′また、同様に（ロ
）に示すパルス間隔Ｔｄ２のパルス間隔信号は、第２の
空気圧スイッチ６のフラッパ６６をＴａ２の間矢印方向
に変位させる０フラッパ５６．６６が矢印方向に変位す
ると、対抗するノズル背圧は低くなり、各パルス間隔Ｔ
ｄ、 、’ｒａ２の時間、第１．第２の空気圧スイッチ
５，６がオンとなる。input the deviation ε between the two output terminals, switch the pulse interval signal in the positive and negative directions of the corresponding pulse interval Td according to the sign of the deviation 6, and output from the two output terminals, for example, the pulse interval Td1 shown in the third (A). The pulse interval signal displaces the flat roller 6 of the first pneumatic switch 5 in the direction of the arrow with the pulse PH, and returns it with the pulse PL. Therefore, 7 Ratsupa 56 is T
Similarly, the pulse interval signal of pulse interval Td2 shown in (b) is a zero flapper that displaces the flapper 66 of the second pneumatic switch 6 in the arrow direction during Ta2. When 56.66 is displaced in the direction of the arrow, the opposing nozzle back pressure becomes lower and each pulse interval T
d, ,'ra2 time, 1st. The second air pressure switches 5 and 6 are turned on.
第４図は、゛第１．第２の空気圧スイッチ、空気圧供給
源７及びタンク８の接続図を簡略化して示した図であり
、第５図は、第４図を電気回路で等価させた等価回路図
である。Figure 4 shows "1. This is a diagram showing a simplified connection diagram of the second pneumatic switch, the pneumatic pressure supply source 7, and the tank 8, and FIG. 5 is an equivalent circuit diagram equivalent to FIG. 4 using an electric circuit.
これらの図において、Ｐｓを空気圧供給源７の出力圧、
Ｒ１，Ｒ２を管５２．５５．６２．６３の抵抗、Ｃをタ
ンク８の容量とすると、タンク日の出力空気圧ＰＯは、
次式で表わされる。In these figures, Ps is the output pressure of the pneumatic supply source 7,
When R1 and R2 are the resistances of the pipes 52, 55, 62, and 63, and C is the capacity of the tank 8, the output air pressure PO on the tank day is:
It is expressed by the following formula.
加圧のとき
減圧のとき
よって、出力空気圧Ｐｏは、パルス間隔信号’ｒａ、
。Depending on when the pressure is increased or when the pressure is decreased, the output air pressure Po is determined by the pulse interval signal 'ra,
.
Ｔａ２、すなわち、入力電気信号ｅ、に正確に対応した
ものと°なる。Ta2, that is, exactly corresponds to the input electrical signal e.
出力空気圧Ｐｏは、空気圧電気変換手段９によって電気
信号ｅ（に変換され、・し夫ス幅信号発生回路４３は、
Ｊ”＠１となるようにパルス幅信号を出力する。これに
より、タンク８からの出力空気圧ｐ□は、電気信号ｅ１
１すなわち、操作量に正確に対応するように迅速に追従
し、維持される。The output air pressure Po is converted into an electric signal e (by the air pressure electric conversion means 9, and the air pressure width signal generation circuit 43 is
A pulse width signal is output so that J"@1. As a result, the output air pressure p□ from the tank 8 is equal to the electric signal e1
1, that is, it is quickly followed and maintained in such a way that it accurately corresponds to the manipulated variable.
第６図は第１図におけるパルス幅信号発生回路４３の一
例を示す構成ブロック図である。ここでは、ｅｉとｅｆ
の備差εを入力する比較器ＣＯ，、偏差εをスイッチＳ
１を介して積分する積分器ＩＮＴ、この積分器ＩＮＴの
出力を入力する比較器Ｃ０２、この出力をスイッチＳ５
を介して入力するモノマルチＭＭ１゜Ｍ２．比較器ＣＯ
４の出力を入力し、各スイッチ８１〜Ｓ５を制御するロ
ジック回路、帰還信号６ｆを入力し、スイッチＳ２．Ｓ
３を介して非線形出力１！ ｙ ＋ −１ｊ ｒを積分
器ＩＮＴの入力端に出力する非線形回路ＮＬ、 。FIG. 6 is a block diagram showing an example of the pulse width signal generation circuit 43 in FIG. 1. Here, ei and ef
The comparator CO inputs the difference ε, and the switch S inputs the deviation ε
1, a comparator C02 to which the output of this integrator INT is input, and a switch S5 to input this output.
Mono-multi MM1゜M2. Comparator CO
A logic circuit which inputs the output of switches S2. S
Nonlinear output 1 through 3! a nonlinear circuit NL, which outputs y + −1j r to the input terminal of the integrator INT;
Ｎｂ２で構成したものである。It is made of Nb2.
第７図はこの回路の各部分の動作波形の一例を示す波形
図である。FIG. 7 is a waveform diagram showing an example of the operating waveforms of each part of this circuit.
各スイッチ８１〜Ｓ５は第７図（ロ）〜に）に示すよう
にロジック回路ＬＧによって駆動され、モノマルチＭＭ
１． ＭＭ２の出力端からｆｌＶ３ Ｋ示すように偏差
信号ａＶｃ関連したパルス間隔Ｔｄｉ 、 ’ｒｄ２
を有するパルス幅信号を出力する。なお、ここで、各非
線形回路ＮＬ１． Ｎｂ２は、偏差６と、出力空気圧Ｐ
ｏの圧力変化量とが直線関係でなく、圧力変化方向とそ
の時の出力圧によって変化するので、これを補償するた
めに設けたものである。Each switch 81 to S5 is driven by a logic circuit LG as shown in FIG.
1. From the output end of MM2 flV3 K As shown, the pulse interval Tdi, 'rd2 related to the deviation signal aVc
outputs a pulse width signal having a pulse width of . Note that here, each nonlinear circuit NL1. Nb2 is the deviation 6 and the output air pressure P
This is provided to compensate for the fact that the amount of pressure change in o is not in a linear relationship and varies depending on the direction of pressure change and the output pressure at that time.
なお、上記の実施例では、空気圧電気変換手段９を設け
、出力空気圧Ｐ。に対応した電気信号ｅｆをパルス幅信
号変換器に負帰還させるようにしたが、この負帰還ルー
プはなくてもよい。また、パルス幅信号変換器としては
、第６図に示す回路を含むものに限定されず、例えばマ
イクロコンピュータ等を用いたものでもよい。また、空
気圧スイッチとしては、ノズルフラッパからの背圧によ
って変位するダイアプラムを含む構成のものに一定され
ず、例えば電磁弁を用いてもよい。In the above embodiment, the pneumatic-electrical converter 9 is provided to convert the output pneumatic pressure P. Although the electrical signal ef corresponding to the pulse width signal converter is negatively fed back to the pulse width signal converter, this negative feedback loop may not be provided. Further, the pulse width signal converter is not limited to one including the circuit shown in FIG. 6, but may be one using a microcomputer or the like, for example. Further, the pneumatic switch is not limited to a structure including a diaphragm that is displaced by back pressure from the nozzle flapper, and for example, a solenoid valve may be used.
また、上記の実施例において、送信端ＴＲがら伝送させ
る光信号の形態としては、パルス相互間の間隔釦情報を
も九ぜたもの以外、パルス周波数やパルス幅信号等、他
の信号形態とｌ−てもよい。また、光信号の形態によっ
ては、２本の光ファイバを介して送信端と、操作端とを
結合させてもよい。In addition, in the above embodiment, the form of the optical signal transmitted from the transmitting end TR is not limited to the one in which the interval button information between pulses is also included, but also includes other signal forms such as pulse frequency and pulse width signals. - May be. Further, depending on the form of the optical signal, the transmitting end and the operating end may be coupled via two optical fibers.
以上説明したように、本発明によれば消費電力が少なく
、伝送された光信号によってのみ作動し、従って電気信
号を伝送する必要のない、光応動装置が実現できる。ま
た、空気圧電気変換手段を含む負帰還ループを設けるこ
とによって、応答性を高くすることができるとともに、
操作量に正確に対応した空気圧信号を得るととができ石
。As described above, according to the present invention, it is possible to realize a light-responsive device that consumes less power, operates only by transmitted optical signals, and therefore does not need to transmit electrical signals. In addition, by providing a negative feedback loop including a pneumatic-electric conversion means, responsiveness can be increased, and
It is possible to obtain a pneumatic signal that accurately corresponds to the amount of operation.
第１図は本発明に係る装置の一例を示す構成ブロック図
、第２図は第１図装置において送信端から伝送する光信
号の形態の一例を示す波４．形図、第３図は第１図装置
におけるパルス幅信号変換器から得られるパルス幅信号
の波形図、第４図は第１図における要部の簡略図、第５
図はその等何回路、第６図はパルス幅信号発生回路の一
例を示す構成ブロック図、第７図は第６図各部分の動作
波形の一例を示す波形図である。
ＴＲ・・・送信端、ＡＣ・・・操作端、ＯＦ・・・光フ
ァイバ、３・・・光電変換部、４・・・パルス幅信号変
換器、Ｓ、６・・・空気圧スイッチ、７・・・空気圧供
給源、８・・・タンク、９・・・空気圧電気変換手段。FIG. 1 is a configuration block diagram showing an example of a device according to the present invention, and FIG. 2 is a wave 4. Figure 3 is a waveform diagram of the pulse width signal obtained from the pulse width signal converter in the apparatus shown in Figure 1. Figure 4 is a simplified diagram of the main parts in Figure 1.
6 is a configuration block diagram showing an example of a pulse width signal generating circuit, and FIG. 7 is a waveform diagram showing an example of operating waveforms of each part of FIG. 6. TR...Transmission end, AC...Operation end, OF...Optical fiber, 3...Photoelectric conversion unit, 4...Pulse width signal converter, S, 6...Pneumatic switch, 7. ... Pneumatic supply source, 8... Tank, 9... Pneumatic-electrical conversion means.
Claims (3)
号を受光する光電変換手段と、この光電変換手段から得
られる電力によって作動し前記光信号に含まれるパルス
状の信号を入力しこの信号を処理して操作量に対応した
パルス幅信号を出力するパルス幅信号変換器と、一端が
空気圧供給源に接続され他端がタンクに接続された第１
の空気スイッチと、一端が開放し他端がタンクに接続さ
れた第２の空気スイッチとを備え、 前記第１．第２の空気スイッチのオン、オフ時間を前記
パルス幅信号変換器からのパルス幅信号によって制御す
るようにしたことを特徴とする光応動装置。(1) A photoelectric conversion means that receives an optical signal sent via an optical fiber from the transmitting end side, and a pulse-shaped signal included in the optical signal that is operated by the power obtained from the photoelectric conversion means and inputs the pulsed signal contained in the optical signal. a pulse width signal converter that processes the pulse width signal and outputs a pulse width signal corresponding to the manipulated variable; and a first pulse width signal converter that processes the pulse width signal and outputs a pulse width signal corresponding to the manipulated variable;
and a second air switch having one end open and the other end connected to the tank; A photoresponsive device characterized in that the on/off time of the second air switch is controlled by a pulse width signal from the pulse width signal converter.
の時間に操作量に関連する情報を有しており、パルス幅
信号変換器はパルス相互間の時間を計測する手段を含ん
で構成されている特許請求の範囲第１項記載の光応動装
置。(2) The pulse-like signal included in the optical signal has information related to the manipulated variable in the time between pulses, and the pulse width signal converter includes a means for measuring the time between pulses. A photoresponsive device according to claim 1.
した電気信号をも入力し、この電気信号と、操作量に関
連した信号との差信号が零になるように前記第１．第２
の空気スイッチをオン、オフするパルス幅信号を出力す
る特許請求の範囲第１項記載の光応動装置。(3) The pulse width signal converter also inputs an electrical signal corresponding to the output air pressure signal, and converts the first signal so that the difference signal between this electrical signal and the signal related to the manipulated variable becomes zero. Second
2. The photoresponsive device according to claim 1, which outputs a pulse width signal for turning on and off an air switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3698084A JPS60181802A (en) | 1984-02-28 | 1984-02-28 | Device working in response to light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3698084A JPS60181802A (en) | 1984-02-28 | 1984-02-28 | Device working in response to light |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60181802A true JPS60181802A (en) | 1985-09-17 |
| JPH0332801B2 JPH0332801B2 (en) | 1991-05-14 |
Family
ID=12484897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3698084A Granted JPS60181802A (en) | 1984-02-28 | 1984-02-28 | Device working in response to light |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60181802A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0310213U (en) * | 1989-06-19 | 1991-01-31 | ||
| WO2007136854A3 (en) * | 2006-05-19 | 2008-04-03 | Watlow Electric Mfg | Sensor adaptors and methods |
| US7496469B2 (en) | 2006-05-19 | 2009-02-24 | Watlow Electric Manufacturing Company | Temperature sensor adaptors and methods |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW540251B (en) | 1999-09-24 | 2003-07-01 | Semiconductor Energy Lab | EL display device and method for driving the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58155001U (en) * | 1982-04-07 | 1983-10-17 | 横河電機株式会社 | process control equipment |
| JPS58155002U (en) * | 1982-04-07 | 1983-10-17 | 横河電機株式会社 | process control equipment |
-
1984
- 1984-02-28 JP JP3698084A patent/JPS60181802A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58155001U (en) * | 1982-04-07 | 1983-10-17 | 横河電機株式会社 | process control equipment |
| JPS58155002U (en) * | 1982-04-07 | 1983-10-17 | 横河電機株式会社 | process control equipment |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0310213U (en) * | 1989-06-19 | 1991-01-31 | ||
| WO2007136854A3 (en) * | 2006-05-19 | 2008-04-03 | Watlow Electric Mfg | Sensor adaptors and methods |
| US7496469B2 (en) | 2006-05-19 | 2009-02-24 | Watlow Electric Manufacturing Company | Temperature sensor adaptors and methods |
| US7496481B2 (en) | 2006-05-19 | 2009-02-24 | Watlow Electric Manufacturing Company | Sensor adaptors and methods |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0332801B2 (en) | 1991-05-14 |
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