JPS58150869A - Signal measuring system - Google Patents
Signal measuring systemInfo
- Publication number
- JPS58150869A JPS58150869A JP57032254A JP3225482A JPS58150869A JP S58150869 A JPS58150869 A JP S58150869A JP 57032254 A JP57032254 A JP 57032254A JP 3225482 A JP3225482 A JP 3225482A JP S58150869 A JPS58150869 A JP S58150869A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- optical
- light
- wavelength
- optical fiber
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/22—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-emitting devices, e.g. LED, optocouplers
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
Description
【発明の詳細な説明】
（ｗ５ＷＡの技術分野〕
この発明は、信号測定方式、特に、ａｇｏ値号線から夫
々電圧を取り出し、この電圧波形で電気光学効果素子を
用６て光信号に変調をかけ、得られえ光信号を基に電圧
波形を測定する方式の載置に関する。Detailed Description of the Invention (Technical Field of W5WA) This invention is a signal measurement method, in particular, extracting voltages from each AGO value line and modulating an optical signal using an electro-optic effect element with this voltage waveform. , relates to a system for measuring voltage waveforms based on optical signals obtained.
Ｉｔ来の三相交流電圧の測定方式を菖１−１第２順を参
照して１１例する。Eleven examples of the conventional three-phase AC voltage measurement method will be described with reference to the second order of 1-1.
三相交流電力が送電＠１１ 、１２ 、１３によって送
られているとすると、各送電ｆｉｌｌ 、 １２ 、１
３から、電圧（５００１Ｖ）を、夫々分圧器２１，２２
．２３テ＊り出す。りまシ、分圧ｌＩ２１．Ｕ、２３は
、夫々２個の直夕蟻なコンデンサを、送１１１巌Ｈ、１
２、１３とアース点との間に配し、前述の２１１のコン
デンサの接続点から分圧された電圧（約１００Ｖ）を得
るようにし友ものである。Assuming that three-phase AC power is being sent by power transmission @11, 12, 13, each power transmission fill, 12, 1
3, the voltage (5001V) is applied to voltage dividers 21 and 22, respectively.
．． 23 Te* comes out. Partial pressure lI21. U, 23 each carry two straight capacitors, 111 and 1 H, 1
2 and 13 and the ground point, and a divided voltage (approximately 100 V) is obtained from the connection point of the capacitor 211 mentioned above.
この分圧＠２１．２２．２３で優られた電圧は、夫々検
出１１３１．３２．３３に入力される。検出＠ａｉ 、
ｕ 。The voltages prevailing in this partial voltage @21.22.23 are input to the respective detections 1131.32.33. Detection@ai,
u.
羽は８２図に示す電気光学効果素子加を有するもので、
＾体的には、電気光学効釆嵩子（５）は１例えはＬ１Ｎ
ｂｏ！などの電気光学効ＪＩＬ素子結晶３１１０上向、
下面に夫々電極；１１４ 、３１５を蒸着し、左端面、
右４曲に大々偏元板３１２ 、３１３ ｔＷＡ着し九も
のである。そして、電極３１４からは、例えは分圧ｓｎ
。The wings have an electro-optic effect element shown in Figure 82,
^ Physically, the electro-optical effect Kako (5) is 1, for example L1N.
bo! Electro-optic effect JIL element crystal 3110 upward, such as
Electrodes 114 and 315 were deposited on the bottom surface, respectively, and the left end surface,
The four tracks on the right have a large biasing plate of 312 and 313 tWA, making nine pieces. Then, from the electrode 314, for example, the partial pressure sn
.
２２ 、２３−［！リー））１３１ｔｉカ延び、電＠
３１５ カらはアース点へ延びるリード−３１７が延び
る。ＩＫ。22, 23-[! Lee)) 131tika extension, electric @
315 has a lead 317 extending to the ground point. I.K.
偏光ＩＩＩＬ３１３は、５を信号が入力してくる元ファ
イノ（４０、と光学的に像絖され、偏ｔ、板３１２は光
信号が出力する元ファイバ４００とｗ！続される。The polarized light IIIL 313 is optically imaged with the original fiber 40 from which the optical signal is input, and the polarization plate 312 is connected to the original fiber 400 from which the optical signal is output.
光ファイバ４０．かう入力し九大傷号は、偏′ｌｔＩ［
３１３で直−偏光光となｐ１電気党学効果嵩子−１３１
１で偏ｇＩＬ面が、電極３１４ 、３１５関の電圧に比
例して一転し、これが偏光＄３１２を通過することによ
って、光の強直の変化が加わり九元傷号に変換され、光
強ｆ変調され九光備考とｆｋ−）て出力する。Optical fiber 40. After inputting this, the nine major scars are biased ′ltI[
Directly polarized light at 313 p1 electromagnetic effect 131
1, the polarized gIL surface changes in proportion to the voltage across the electrodes 314 and 315, and when this passes through the polarized light $312, a change in the tonicity of the light is added and it is converted into a nine-dimensional flaw, resulting in light intensity f modulation. It is output with nine light notes and fk-).
以上のよりな機能を有する検出部３１には、１ｌＩｌ定
装置栃の識定−路団から、所定の電気信号が出力される
と例えは、波長ム、（又はλ）Ｏ光信号が光送値器社か
ら党７アイパ４１Ｔ１を介して入力され為ようになって
いる。そして、変調を受は九光値号は大ファイバ４１Ｄ
を介して、光受１ｉ１１＆ｌＫ入力され電気信号とされ
て糊５ｆ１４６１１路協に人力堪れる。従って、この一
定一路５３に入力された電気信号は、送電１ｉ１１１の
電圧ａｉ形を反影している。When a predetermined electric signal is outputted from the identification unit of the identification device 1 to the detection unit 31 having the above-mentioned functions, for example, a wavelength wave, (or λ) O optical signal is transmitted. It is inputted from Seikisha via Toto 7 Aipa 41T1. And the modulation is received by the large fiber 41D
Through the light receivers 1i11 & 1K, the signals are input into electrical signals and sent to the glue 5f14611 by hand. Therefore, the electrical signal input to this constant path 53 reflects the voltage ai type of the power transmission 1i111.
塘九、樵ｔｔＳ鄭ｇには、測定−路団から、所定の電気
信号が出力されると９例えば、波長λ２（又鉱Ｊ）の光
信号が′１ｔｆｓ儂器協から元ファイバ４２．を介して
入力されるようになっている。そして、変−を受は九九
備考は光ファイバ４２Ｄを介して元受信器５１に入力さ
れ電気信号とされて測定回路団に入力される。従って、
この測定回路＆に入力された電気信号は、送電Ｉｖ１２
の電圧波形を反影している。For example, when a predetermined electrical signal is output from the measuring group, an optical signal of wavelength λ2 (also mine J) is transmitted from the original fiber 42. It is now input via the . Then, the multiplication table notes are inputted to the original receiver 51 via the optical fiber 42D, converted into electrical signals, and inputted to the measurement circuit group. Therefore,
The electrical signal input to this measurement circuit &
It reflects the voltage waveform of .
史に１検出１１３３には、測定１路団から、所定の電気
４Ｉｉ号が出力されると５例えは、波長λ３（又はλ）
の光信号が光送信ｉｌ！５２から元ファイバ４３ｕとを
介して入力されるようになっている。そして、褒詞を受
１九元信号は光ファイバ４３゜を介して光受信ｉｉ！５
１に入力され電気信号とされて測定−ｗＩ５３に入力さ
れる。従って、この＃ｊ定回ｗ！Ｉ団に入力された電気
信号は、送′ｌＬ＠１３の電圧波形を反影している。In history 1 detection 1133, when a predetermined electricity No. 4Ii is output from the measurement group 5, for example, the wavelength λ3 (or λ)
The optical signal is optically transmitted il! 52 and the original fiber 43u. Then, the complimentary signal is optically received via the optical fiber 43° ii! 5
1, is converted into an electrical signal, and is input to the measurement wI 53. Therefore, this #j regular time lol! The electrical signal input to group I reflects the voltage waveform of transmission 'lL@13.
測定＆ｇｌ路閏では取り込んだ電気信号を基に、電圧、
波形などが解析される。Measurement & gl The voltage,
Waveforms etc. are analyzed.
こＯよ６な測定方式では、分圧器中検出鄭が過１ｍの近
くに置かれ、電圧波形を忠＊ＷＣＭｉＬり出すことがで
き、かつ、光ファイバを用いて遠い欄電装置まで光信号
を伝送するので、強電界下においても正確な検出がｕｎ
ｉｔ″ｃＴｏる。一方、このような従来方式では、−相
の電圧波形を４ＬＤ出す良めに、往（３１２本の元ファ
イバを必簀とする。しかも、検出部と測定装置とが違く
隅丸っている場合が多い。In this sophisticated measurement method, the detector in the voltage divider is placed close to 1 meter away, and the voltage waveform can be output faithfully *WCMiL, and the optical signal can be transmitted to the distant electric field equipment using an optical fiber. transmission, accurate detection is not possible even under strong electric fields.
On the other hand, in this conventional method, 312 original fibers are required to output the -phase voltage waveform in 4LDs.Moreover, the detection unit and measurement device are different. Often has rounded corners.
従って、システムとしては、コスト鳥なものとなる上、
光７アイパの長さが長いにけ信頼性に欠け、保守上も好
ましくないという欠点が６つ九。Therefore, as a system, it becomes costly, and
Although the Hikari 7 Eyepa is long, it lacks reliability and is undesirable in terms of maintenance.
本殆＃８は、以上のような欠点に１みなされ良ものであ
る。それ故、本発明の目的は、光７アイノ（Ｏ長さを短
くて龜、これにより経ｆｌｔ性、信頼性、保守性の優れ
たシステムを提供し得る信号の測定方式を提供すること
である。Book #8 is considered to be a good product despite the above-mentioned drawbacks. Therefore, an object of the present invention is to provide a signal measurement method that can shorten the optical length and thereby provide a system with excellent stability, reliability, and maintainability. .
そこで、本発明で絋、一本の光７アイノ＜によりて、測
定装置と複数０４１号−に対し夫々設けられた電気党学
効果本子を有する信号線数の検出部とを直列的にルーフ
“をなすように結合し、更に、測定装置からｇＩ号鱒数
の直兼の元１ｇ号ヶ送出し、各検出部にて自己に割り当
てられた波長の光信号にのみに調をかけて光信号を送出
させ、他の波長の光信号な着湯させ、最終的に測定装置
で得られ圧覚信号に基づ〈測定をすることにし良。Therefore, in the present invention, a measuring device and a signal line number detecting section each having an electrical effect head provided for each of the plurality of No. Furthermore, the measuring device sends out 1 g of gI trout, and each detection section tunes only the optical signal of the wavelength assigned to itself to generate an optical signal. We decided to send out an optical signal of another wavelength, and finally measure it based on the pressure signal obtained by the measuring device.
以下、−向を参照して、本発明の詳細な説明する。実施
例で鉱、慎号巌が３本の三相交流を例とする。論３幽は
、本尭１を適用したシステムのブロック図である。同一
においては、ｌｔ を図に比べて以下の構成を変化させ
え。Hereinafter, the present invention will be described in detail with reference to the - direction. In the example, a three-phase alternating current with three wires, Mine and Shingo Iwao, will be taken as an example. Figure 3 is a block diagram of a system to which Hon'ei 1 is applied. In the same case, compare lt with the figure and change the following configurations.
先ず、測定装置１（ＪＯ嬬、測定−路１０１と光送信器
１０２と元受信器１０３と合波＠ １０４と分波＠ １
０５とで構成される。＃定回路１０１からは、光送信器
１０２へａ＄１類の波長λ１．礼、λ、の光信号を送出
するように、信号が出力される。すると、光送信＃ １
０２からは、λ１．λ８．λ、の波長を有する光信号が
出力され會＊１ｌ１０４に＃る。合波ＩＩ １０４で、
これらの大備考嬬波長多重１れて、餠ら丸亀元信号とさ
れる。こｏｉｓｒｂ大な光信号は、合波−１０４から光
７アイパＩを介して、検出部３４に＃る。＃Ｌ出郁あで
は、例えは、波長λ亀のｆｔ、信号に０−）武瞬がかけ
られ、伽の波長４．１１の党備考鉱通過させられる。First, the measurement device 1 (JO Tsumu), the measurement path 101, the optical transmitter 102, the original receiver 103, the multiplexer @ 104 and the demultiplexer @ 1
05. # From the constant circuit 101, the wavelength λ1. of the a$1 class is sent to the optical transmitter 102. A signal is output so as to send out an optical signal of λ. Then, optical transmission #1
From 02, λ1. λ8. An optical signal having a wavelength of λ is outputted and sent to the system 104. Combined wave II 104,
These important points are considered to be the original Marugame signal after wavelength multiplexing. The large optical signal is sent from the multiplexer 104 to the detector 34 via the optical 7-iper I. #L output, for example, the wavelength λ turtle's ft, 0-) Takeshun is applied to the signal, and the signal with the wavelength of 4.11 is passed through.
異体的には、検出郁誦は、例えは１ｓ４■Ｏように構成
されている。つ壕ｐ１検出ｌＩｕで嬬、入力側プリズム
３４１が九７アイパ―から入力されｆＩ−光信号を分解
する１分解され圧覚信号は波長によって屈折する直音が
異なるので、入力側プリズム３４１から＃Ｉｌの光信号
（＃Ｌ長λ１）が出力される部分に絽１０光７アイパ３
４２の人口を設けておく。Variantly, the detection recitation is configured as, for example, 1s4■O. When the trench p1 is detected lIu, the input prism 341 is input from the 97 eyeper and decomposes the fI-optical signal.Since the decomposed pressure signal has a direct sound that is refracted depending on the wavelength, the input prism 341 In the part where the optical signal (#L length λ1) is output,
Let's set a population of 42.
同機に％第２の光信号（波長λＳ）が出力される部分に
第２の光ファイバ３４３０入口を設け、ＩＫ３０元傷号
（Ｒ長λ、）が出力される部分に纂３０党ファイバ３４
４０人口を設ける。第３の［７アイノ１３４４に入力し
九波長λ１．Ｏ第３０党僅号は、電気光学効果素子３４
５に入力され、分圧器ムからＪｕｌ込壜れ良電圧によっ
て変調を受ける。この変調され良党値号は、第４の光フ
ァイバ３４６を介して出力側プリズム３４７に入力され
る。ここで、第１０光７アイパ３４２、第２０党２アイ
パ３４３．＄１４の光ファイバ３４６の元ファイバの出
口は、夫々、それらから出力１れる光信号が屈折する度
合を考慮して、出力され素光１１Ｍが出力側プリズム３
４７で集合され一つの光路を通って光ファイバ４５へ到
るように構成される。A second optical fiber 3430 is installed in the part where the second optical signal (wavelength λS) is outputted, and a second optical fiber 3430 is installed in the part where the IK30 original signal (R length λ,) is outputted.
Establish a population of 40. The third [7 wavelengths λ1. The 30th party number O is electro-optic effect element 34
5 and is modulated by the positive voltage from the voltage divider. This modulated signal is inputted to the output prism 347 via the fourth optical fiber 346. Here, the 10th light 7 Aipa 342, the 20th party 2 Aipa 343. At the exits of the original fibers of the $14 optical fiber 346, the output element light 11M is outputted from the output side prism 3, taking into account the degree of refraction of the optical signal output from each of them.
47 and are configured to reach the optical fiber 45 through one optical path.
このようにして、検出＠３４から出力された光信号は、
党７アイパーを介して検出部３５に到る。検ｍ５ｍ５も
ｓ ｍ４ＷＡで示した検出部調と同機の構成となってい
る。喪だ、検出１１３６０電気光学効果嵩子に入力され
ｈ光信号は １１２の光信号（波長λ、、）てあ為。In this way, the optical signal output from the detection@34 is
It reaches the detection unit 35 via the party 7 eyeper. The detector m5m5 also has the same configuration as the detection section shown in the sm4WA. Unfortunately, the optical signal input to the electro-optic effect detector 11360 is the optical signal 112 (wavelength λ,...).
検出Ｓ易から出力された光信号は元ファイバーを介して
―出Ｓ謔に到る。検出Ｓ菖も、第４−で示し九槍出ＩＩ
；１４と岡榔Ｏ構威で、検出Ｓ謡では、ｌｌｍ１０党信
号（波長λ１）にのみ変調がかけられ、出力される。The optical signal output from the detection module reaches the output module via the source fiber. Detection of S irises is also indicated by the 4th - Kyuyari II
;14 and Okasuke O configuration, in the detection song, only the llm10 party signal (wavelength λ1) is modulated and output.
このようにして、童での光信号ＫＩＥ調がかけられ鍋音
させられた光信号は、党７アイノ（４７を介して分１ｍ
９１０１５ Ｋ到る。分波器１０６では、入力堪れ九党
信号は、変調のかけられた、纂１０光儒考・ｊ１２の光
信号・Ｊ１３Ｏ１信号に別けられ、これらはｊｔ受信器
１０３に入力されて夫々電気信号とされる。ｒ−Ｏ電気
信号は、測定１ｉ１１１０１に人力壜れて、電圧波形が
解析される。In this way, the optical signal at the child's KIE tone was applied and the optical signal was made to make a pot sound.
91015 K arrives. In the demultiplexer 106, the input signal is divided into a modulated optical signal of J12, and a J13O1 signal, which are input to the JT receiver 103 and converted into electrical signals, respectively. It is said that The rO electrical signal is manually measured 1i11101 and the voltage waveform is analyzed.
以上ｏｉｉ明は、３種ＩＩｏｔＩＬＩＩｋの光信号を液
量多重して同時に送出する方式なｍ１ｖＡシ九が、３穏
−〇ｖ長の光信号を時分割多重して送出することによ６
６波長間の干渉による影響（小さい）をほとんど皆無に
することも回部で魯為、こＯようにすると＊ Ｆｉ、ｓ
ａｌｌ類の波長Ｏ党償号０道出Ｏ纏ｐ巡えし時間を、
送電−の地線等に際して、三＠５２！銀の電圧が変化す
る時間よｐ十分値くすることが重畳である。まえ、得ら
れるデータは％崎關約に乗散しえデータとなゐＯで、橢
ｉｉ翳１１にマイタロプロセッサを内戚させて、中間デ
ー７０補完を行うようにしても良い。The reason for this is that the m1vA system, which is a system that volume-multiplexes three types of IIotILIIk optical signals and sends them out simultaneously, is able to time-division-multiplex and send out optical signals of 3-0V length.
It is also possible to almost completely eliminate the influence (small) of interference between the six wavelengths.
The time spent going through all the wavelengths of O parties,
3@52 for power transmission ground wires, etc. The superposition is to make p sufficiently large for the time the silver voltage changes. First, since the data obtained is not data that can be multiplied by the percentage ratio, it is also possible to interpolate the intermediate data 70 by using a Mytalo processor in the computer 11.
１九％ｊＩＩｎ−で説明し九検出部は、半導体の基板上
に％党ファイバプリズム、電気光学効果素子細晶を一体
化して、ｆｔ、Ｉｃ化し１−良い。The detection section explained in terms of 19%jIIn- is made by integrating a fiber prism and an electro-optic effect element fine crystal on a semiconductor substrate, and converting it into FT, IC.
更に、プリズムは、分波横比を有するものであれば、フ
ィルタなとでも良い。Furthermore, the prism may be a filter as long as it has a splitting/lateral ratio.
以上説−し丸ように、本発明によれば、元ファイバの長
さを全体として短くでき、信頼性、保守性、鯖６１！性
の優れ九システムを提供し得る。しかも１党ファイバに
よっているので、強電界下で正確なａｔ定かで自るなと
の特性を合せ持つ。As described above, according to the present invention, the length of the original fiber can be shortened as a whole, and reliability and maintainability are improved. It can provide nine systems with excellent performance. Moreover, since it uses a single-party fiber, it also has the characteristic of being able to operate accurately and reliably under strong electric fields.
４、 ｌ１ｉｉｌＯ簡単な＃Ｊｌ明
第１１ｉ１１ｔｉ従来例を説明するためのブロック図、
ｓ２図は電気光学効果素子のＩＩＩ向図、第３図は本弛
明の実施例を１１明する丸めのブロック図、第４閣は１
１３−のｍｉｓの儒向図である。4. A block diagram for explaining a simple #Jlming11i11ti conventional example,
Figure s2 is a III-direction diagram of the electro-optical effect element, Figure 3 is a rounded block diagram showing the 11th embodiment of the present invention, and the 4th figure is 1.
This is a Confucian diagram of 13-mis.
調、３５．３６・・・検出部 １００・・・測定装
置（資）、３４５・・・電気光学効果素子３４１ 、
３４７・・・プリズム
代埴人 弁層士 本 １） 崇第１図Key, 35.36...Detection unit 100...Measuring device (equipment), 345...Electro-optic effect element 341,
347...Prism Daihanito Benreshi Book 1) Takashi Diagram 1
Claims (1)
電圧＃Ｌ形で電気光学効果素子を用いて元信号に変調を
珈け、得られ九党信号を基に電圧波形を測定する信号ｍ
に方式において、 一本の元ファイバによって欄に装置と、複数の信号線に
対し夫々設けられ九電気元学効果素子を有する複数の検
出部とを直列的にループをなすように結合するとともに
、 前記測定装置から信号線数の波長の光信号を送出し、前
記各検出部にて自己に＠り蟲てられ九波長の光信号にの
み変調をかけて光信号を送出させ輪のｍ長の元信号を通
過させることを特徴とする信号測定方式。 （２ン 前記画定装置から送られる信号線数の波長の
元僅号嬬波長多重されて送出されることを特徴とする特
許請求の範囲第ＩＸＪＩ配畝の儂号醐建方式。 （３）前記測定ａｍから送られる信号＊ａの波長の光信
号は時分割多重で送出されることを特徴とする特許請求
の範閥纂１項記載の信号測定方式。 （４）前記検出部は党を入力して分解する入力側プリズ
ムと、入力側プリズムによって分解され九自らに鋒関係
の波長の元信号を通過さぜる光フアイバ群と、電気光学
効果素子と、入力側プリズムによシ分解され九自己Ｋｌ
ｌ轟てられ九波長の元信号ｔ＊り込み電気光学効果素子
に導く導入元ファイバと、前記電気光学効果素子から出
力され元信号を通過させゐ導出光ファイバと、前記光フ
アイバ群及び導出光７アイパの出力を集合して出力する
出力儒１リズムとから威ることｔ％黴とする特許請求の
範ＷＡｊ１１１項ないし鵬３項のいずれか記載の信号測
定方式。[Claims] (1) Take voltages from each of a plurality of signals, modulate the original signal using an electro-optic effect element with this voltage #L type, and create a voltage waveform based on the nine-party signal obtained. The signal m to be measured
In this method, a single source fiber connects the device and a plurality of detection sections each provided for a plurality of signal lines and having nine electric element effect elements in series to form a loop, and The measurement device sends out an optical signal with a wavelength equal to the number of signal lines, and each detection section modulates only the nine wavelengths of the optical signal to determine the m length of the ring. A signal measurement method characterized by passing the original signal. (2) Our method according to Claim IXJI, characterized in that the wavelengths of the signal lines sent from the demarcation device are multiplexed and sent out. (3) The above-mentioned The signal measurement method according to claim 1, characterized in that the optical signal having the wavelength of the signal *a sent from the measurement am is sent out by time division multiplexing. (4) The detection unit inputs the signal an input-side prism that is decomposed by the input-side prism; a group of optical fibers that pass the original signal of the wavelength related to the optical fiber; an electro-optical effect element; and an input-side prism that is decomposed by the input-side prism. Self Kl
l A source fiber into which the nine-wavelength original signal t* is guided to the electro-optic effect element, an output optical fiber through which the original signal output from the electro-optic effect element passes, and the optical fiber group and the output light. 7. The signal measuring method according to any one of claims WAj111 to Peng3, wherein t% is determined from the output rhythm that collects and outputs the outputs of the 7-aipa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57032254A JPS58150869A (en) | 1982-03-03 | 1982-03-03 | Signal measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57032254A JPS58150869A (en) | 1982-03-03 | 1982-03-03 | Signal measuring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58150869A true JPS58150869A (en) | 1983-09-07 |
Family
ID=12353875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57032254A Pending JPS58150869A (en) | 1982-03-03 | 1982-03-03 | Signal measuring system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58150869A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4894609A (en) * | 1985-08-07 | 1990-01-16 | Ngk Insulators, Ltd. | Electrical measuring device |
| WO1993013429A1 (en) * | 1985-08-07 | 1993-07-08 | Toshisada Fujiki | Voltage detector |
| EP0882989A1 (en) * | 1997-06-06 | 1998-12-09 | GEC ALSTHOM T & D BALTEAU | Electro-optical sensing device with a voltage divider unit |
-
1982
- 1982-03-03 JP JP57032254A patent/JPS58150869A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4894609A (en) * | 1985-08-07 | 1990-01-16 | Ngk Insulators, Ltd. | Electrical measuring device |
| WO1993013429A1 (en) * | 1985-08-07 | 1993-07-08 | Toshisada Fujiki | Voltage detector |
| EP0882989A1 (en) * | 1997-06-06 | 1998-12-09 | GEC ALSTHOM T & D BALTEAU | Electro-optical sensing device with a voltage divider unit |
| FR2764390A1 (en) * | 1997-06-06 | 1998-12-11 | Gec Alsthom T D Balteau | ELECTRO-OPTICAL SENSOR WITH SOLID VOLTAGE DIVIDER |
| US6127817A (en) * | 1997-06-06 | 2000-10-03 | Gec Alsthom T&D Balteau | Pockels cell electro-optic sensor coupled to solid voltage divider |
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