JPH01233373A - Surge observer - Google Patents

Surge observer

Info

Publication number
JPH01233373A
JPH01233373A JP63059276A JP5927688A JPH01233373A JP H01233373 A JPH01233373 A JP H01233373A JP 63059276 A JP63059276 A JP 63059276A JP 5927688 A JP5927688 A JP 5927688A JP H01233373 A JPH01233373 A JP H01233373A
Authority
JP
Japan
Prior art keywords
converter
signal
surge
optical
converted
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
Application number
JP63059276A
Other languages
Japanese (ja)
Inventor
Kouichi Masuzawa
舛沢 弘一
Masahiro Suga
菅 雅弘
Akitoshi Ando
彰敏 安藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP63059276A priority Critical patent/JPH01233373A/en
Publication of JPH01233373A publication Critical patent/JPH01233373A/en
Pending legal-status Critical Current

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  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)

Abstract

PURPOSE:To eliminate adverse effect on a change in characteristic of a component requirement, by using an optical fiber as transmission part to turn a signal to an optical signal converted into digital. CONSTITUTION:An invading surge current is converted into a digital value with an A/D converter 3 and, further, into an optical signal with an E/O converter 4. The optical signal is transmitted to an O/E converter 6 with an optical fiber 5 to be converted into an electrical signal, which is outputted with an output device 9 to observe a surge. A plurality, n+1, of optical fibers 5 as transmission part are connected to the E/O converter 4. Thus, the E/O converter 4, the optical fibers 5 and the like are given a sufficient allowance as digital criterion, thereby eliminating the lowering of a measuring accuracy regardless of specified changes caused by temperature change or secular change.

Description

【発明の詳細な説明】 〔発明の目的〕 (産業上の利用分野) 本発明は伝送形態を改良したサージ観測装置に関する。[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a surge observation device with an improved transmission form.

(従来の技術) 一般に、避雷器等の機器には、雷等のサージによる機器
の信頼性低下を防止するためにサージ観測装置が設けら
れている。
(Prior Art) Generally, equipment such as lightning arresters is provided with a surge observation device in order to prevent reliability of the equipment from decreasing due to surges caused by lightning or the like.

そして、従来のサージffl fi11装置はサージを
検出する検出部と、このサージ検出部からの出力を伝送
する伝送部と、この伝送部からの信号を出力する出力部
とを備える。
The conventional surge ffl fi11 device includes a detection section that detects a surge, a transmission section that transmits an output from this surge detection section, and an output section that outputs a signal from this transmission section.

また、伝送部は信号として通常振幀変調されたアナログ
の光信号が用いられていた。
Further, the transmission section usually uses an analog optical signal that is vibrationally modulated as a signal.

しかしながら、従来の振幅変調による光信号はアナログ
信号として光ファイバで伝送されている。
However, conventional amplitude modulated optical signals are transmitted as analog signals through optical fibers.

よって、LED、フォトダイオード、光ファイバ等の温
度特性等により信号の精度が左右され、サージ観測装置
としての精度が低下する。しかも、光信号の強度が精度
に影響するので、光ファイバとの接続に細心の注意を払
う必要がある。
Therefore, the accuracy of the signal is affected by the temperature characteristics of the LED, photodiode, optical fiber, etc., and the accuracy of the surge observation device is reduced. Moreover, since the strength of the optical signal affects the accuracy, it is necessary to pay close attention to the connection with the optical fiber.

(発明が解決しようとする課題) このように、従来のサージ観測装置においては、振幅変
調によるアナログ信号を伝送していたので。
(Problems to be Solved by the Invention) As described above, conventional surge observation devices transmit analog signals using amplitude modulation.

構成機器の特性変化による影響を受は精度の低下が避け
られなかった。
A decrease in accuracy was unavoidable due to changes in the characteristics of the component equipment.

本発明は上記問題点を除去するために成されたもので、
測定精度を向上したサージ観測装置を提供することを目
的とする。
The present invention was made to eliminate the above problems, and
The purpose is to provide a surge observation device with improved measurement accuracy.

〔発明の構成〕[Structure of the invention]

(課題を解決するための手段) 上記目的を達成するために本発明においては。 (Means for solving problems) In order to achieve the above object, the present invention provides.

伝送部として光ファイバを用い、かつ信号をデジタル変
換された光信号としている。
An optical fiber is used as the transmission section, and the signal is a digitally converted optical signal.

(作  用) このように構成することにより、E/O変換装置等の特
性が変化してもデジタル判定の裕度でこの変化を吸収す
ることができるので、測定精度を向上させることができ
る。
(Function) With this configuration, even if the characteristics of the E/O converter etc. change, this change can be absorbed by the margin of digital determination, so that measurement accuracy can be improved.

(実 施 例) 以下本発明の一実施例を図を、参照して説明する。即ち
1図示しない避雷器等サージにさらされる機器には、サ
ージによる高周波信号を入力する入力装置1を接続する
。この入力袋@1には、高周波信号をインピーダンスを
変換するバッファアンプ2を接続する。そして、バッフ
ァアンプ2は、インピーダンス変換された高周波信号を
アナログ量からデジタル量に変換するA/D変換装置3
に接続される。尚、このA/D変換装置3は常時動作し
ているものとする。さらに、A/D変換装置3には、電
気量を光量に変換するE/O変換装置4を接続する。こ
れらの入力装置1、バッファアンプ2.A/D変換装@
3及びE/O変換装置4は、サージにさらされる機器の
近傍にサージ検出部として配置する。
(Example) An example of the present invention will be described below with reference to the drawings. That is, 1. An input device 1 for inputting a high frequency signal caused by a surge is connected to a device exposed to surges, such as a lightning arrester (not shown). A buffer amplifier 2 for converting the impedance of a high frequency signal is connected to this input bag @1. The buffer amplifier 2 includes an A/D converter 3 that converts the impedance-converted high-frequency signal from an analog quantity to a digital quantity.
connected to. It is assumed that this A/D conversion device 3 is always operating. Furthermore, an E/O converter 4 that converts an amount of electricity into an amount of light is connected to the A/D converter 3. These input device 1, buffer amplifier 2. A/D converter @
3 and the E/O converter 4 are placed as a surge detection unit near equipment exposed to surges.

また、E/O変換装置4には、複数例えばn+1本の伝
送部としての光ファイバ5を接続する。
Further, a plurality of optical fibers 5, for example, n+1 optical fibers 5 as transmission sections are connected to the E/O converter 4.

この場合、A/D変換装置3はnビットであり、n本の
光ファイバ5が信号伝送用に、1本の光ファイバ5がタ
イミング信号伝送用に使用される。
In this case, the A/D converter 3 is n-bit, and n optical fibers 5 are used for signal transmission, and one optical fiber 5 is used for timing signal transmission.

さらに、光ファイバ5には光量を電気量に変換するO/
E変換装置6を接続する。そして、この0/E変換装置
6にはデジタル量をアナログ量に変換するD/A変換装
置7を接続する。このD/A変換装置7には、さらにバ
ッファアンプ8が接続される。また、このバッファアン
プ8に、サージの状態を表示する出力装置9が接続され
る。これらのO/E変換装置6、D/A変換装置7、バ
ッファアンプ8及び出力装置9は出力部として制御室等
に配aされている。
Furthermore, the optical fiber 5 has an O/
Connect the E conversion device 6. A D/A converter 7 for converting digital quantities into analog quantities is connected to this O/E converter 6. A buffer amplifier 8 is further connected to this D/A converter 7. Further, an output device 9 for displaying the surge status is connected to the buffer amplifier 8. These O/E converter 6, D/A converter 7, buffer amplifier 8, and output device 9 are arranged in a control room or the like as an output section.

次にこのように構成したサージa)fil装置の作用を
説明する。避雷器等に侵入したサージ電流は、高周波信
号として入力装置1に入力されバッファアンプ2にてイ
ンピーダンス変換される。この後、サージ電流はA/D
変換装置3にてデジタル量に変換され、さらにE/D変
換装置4で光信号に変換される。
Next, the operation of the surge a)fil device configured as described above will be explained. A surge current that has entered a lightning arrester or the like is input to an input device 1 as a high frequency signal, and is impedance-converted by a buffer amplifier 2. After this, the surge current becomes A/D
The conversion device 3 converts it into a digital quantity, and the E/D conversion device 4 converts it into an optical signal.

そして、この光信号は光ファイバ5にてO/E変換装置
6へ伝送される。にのO/E変換装置6で光信号は電気
信号に変換され、さらにD/A変換装置7にてアナログ
量に変換され、バッファアンプ8を介して出力装置9に
出方されサージの観測がなされる。この出力装置9には
記録装置、表示装置1判定装置等がある。
This optical signal is then transmitted to the O/E converter 6 via the optical fiber 5. The optical signal is converted into an electrical signal by the O/E converter 6 in It will be done. The output device 9 includes a recording device, a display device 1 determining device, and the like.

本実施例においては、光ファイバ5にて伝送する信号を
デジタル変換された光信号としている。
In this embodiment, the signal transmitted through the optical fiber 5 is a digitally converted optical signal.

よって、E/O変換装置4、光フアイバ5等に温度変化
または経年変化による特性変化が発生しても、デジタル
判定としての十分な裕度を有するので測定精度が低下す
ることがない。また、 E/O変換装置4及びO/E変
換装置6の非直線性により測定精度が低下することはな
い。
Therefore, even if characteristic changes occur in the E/O converter 4, the optical fiber 5, etc. due to temperature changes or aging, there is sufficient margin for digital determination, and measurement accuracy will not deteriorate. Furthermore, measurement accuracy does not deteriorate due to nonlinearity of the E/O converter 4 and the O/E converter 6.

さらに、光ファイバ5の接続に際しても、従来の如き光
強度により測定するのと異なり光の有無を判別をするの
みの本実施例では接続が容易となる。
Furthermore, when connecting the optical fibers 5, the connection is facilitated in this embodiment, in which only the presence or absence of light is determined, unlike the conventional measurement based on light intensity.

尚5本発明はこの実施例に限定されるものではなく、必
要に応じバッファアンプ2、D/A変換装置7、バッフ
ァアンプ8等を省略して接続することもできる。
It should be noted that the present invention is not limited to this embodiment, and the buffer amplifier 2, D/A converter 7, buffer amplifier 8, etc. can be omitted and connected as necessary.

また、A/D変換装置3とE/D変換装置4との間にパ
ラレル・シリアル変換装置を設け、0/E変換装置6と
D/A変換装rR7どの間にシリアル・パラレル変換装
置を設けることで光ファイバ5の本数を大幅に減らすこ
とができる。
Further, a parallel/serial converter is provided between the A/D converter 3 and the E/D converter 4, and a serial/parallel converter is provided between the 0/E converter 6 and the D/A converter rR7. This allows the number of optical fibers 5 to be significantly reduced.

〔発明の効果〕〔Effect of the invention〕

以上説明したように本発明においては、伝送部として光
ファイバを用い、信号をデジタル変換された光信号とし
たので、構成要件の特性の変化に悪影響を受けない信頼
性の高いサージ観測装置を提供することができる。
As explained above, in the present invention, an optical fiber is used as the transmission section and the signal is a digitally converted optical signal, so that a highly reliable surge observation device that is not adversely affected by changes in the characteristics of the constituent elements is provided. can do.

【図面の簡単な説明】[Brief explanation of the drawing]

図は本発明の一実施例を示すサージ観測装置の概略構成
図である。 1・・・入力装置、゛   2・・・バッファアンプ。 3・・・A/D変換装置、 4・・・E/O変換装置、
5・・・光ファイバ、    6・・・O/E変換装置
。 7・・・D/A変換装置、 8・・・バッファアンプ。 9・・・出力装置。 代理人 弁理士 則 近 憲 佑 同  第子丸 健
The figure is a schematic configuration diagram of a surge observation device showing an embodiment of the present invention. 1... Input device, 2... Buffer amplifier. 3... A/D conversion device, 4... E/O conversion device,
5... Optical fiber, 6... O/E conversion device. 7...D/A converter, 8...Buffer amplifier. 9...Output device. Agent Patent Attorney Noriyuki Chika Yudo Ken Daishimaru

Claims (1)

【特許請求の範囲】[Claims] サージ測定機器のサージ電流を入力する入力装置と、こ
の入力装置に接続されたサージ電流をデジタル変換する
A/D変換装置と、このA/D変換装置に接続され電気
信号を光信号に変換するE/O変換装置と、このE/O
変換装置に一側を接続され他側を光信号を電気信号に変
換するO/E変換装置に接続された光ファイバと、前記
O/E変換装置に接続された出力装置とを備えてなるサ
ージ観測装置。
An input device that inputs the surge current of a surge measuring device, an A/D converter connected to this input device that converts the surge current into digital, and an A/D converter connected to this A/D converter that converts an electrical signal into an optical signal. E/O converter and this E/O
A surge comprising: an optical fiber connected on one side to a conversion device and on the other side connected to an O/E conversion device that converts an optical signal into an electrical signal; and an output device connected to the O/E conversion device. Observation equipment.
JP63059276A 1988-03-15 1988-03-15 Surge observer Pending JPH01233373A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63059276A JPH01233373A (en) 1988-03-15 1988-03-15 Surge observer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63059276A JPH01233373A (en) 1988-03-15 1988-03-15 Surge observer

Publications (1)

Publication Number Publication Date
JPH01233373A true JPH01233373A (en) 1989-09-19

Family

ID=13108697

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63059276A Pending JPH01233373A (en) 1988-03-15 1988-03-15 Surge observer

Country Status (1)

Country Link
JP (1) JPH01233373A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4932678A (en) * 1972-07-20 1974-03-25
JPS54107780A (en) * 1978-02-10 1979-08-23 Sumitomo Electric Ind Ltd Electric shock current measuring apparatus
JPS5533606A (en) * 1978-08-31 1980-03-08 Oki Electric Ind Co Ltd Surge detector

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4932678A (en) * 1972-07-20 1974-03-25
JPS54107780A (en) * 1978-02-10 1979-08-23 Sumitomo Electric Ind Ltd Electric shock current measuring apparatus
JPS5533606A (en) * 1978-08-31 1980-03-08 Oki Electric Ind Co Ltd Surge detector

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