JPS613069A - Discrimination display for live and dead wires - Google Patents
Discrimination display for live and dead wiresInfo
- Publication number
- JPS613069A JPS613069A JP59125787A JP12578784A JPS613069A JP S613069 A JPS613069 A JP S613069A JP 59125787 A JP59125787 A JP 59125787A JP 12578784 A JP12578784 A JP 12578784A JP S613069 A JPS613069 A JP S613069A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- live
- crystal display
- electrodes
- display element
- 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
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/145—Indicating the presence of current or voltage
- G01R19/155—Indicating the presence of voltage
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Measurement Of Current Or Voltage (AREA)
- Liquid Crystal (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は電線などの充電部近くの電界強度を検出し、活
線であるか死線であるかを液晶の表示電圧のしきい値を
利用して判別し、活線時には表示を行なう装置に関する
ものである。Detailed Description of the Invention The present invention detects the electric field strength near live parts such as electric wires, and determines whether the wire is live or dead using the threshold voltage displayed on the liquid crystal. Sometimes it relates to a device that provides a display.
活線・死線の判別は作業の安全性と能率向上のために必
要とされている。現在その判別の方法としては、検電器
による方法や光学式の電界センサーを充電部に取付は電
界強度を測定して判別する方法がある。然るに検電器に
よる方法は作業員が検１！器を持って充電部に近づ叶る
必要があるので感電の危険性があり、噴た光学式のもの
は光ファイバーを引き回わす必要があるので操作性に問
題がある。そこで従来から、感電の危険性がなく。Distinguishing between live wires and dead wires is necessary to improve work safety and efficiency. Currently, there are methods for determining this, such as using a voltage detector or attaching an optical electric field sensor to the charging part to measure the electric field strength. However, with the method using a voltage detector, the worker is the first to check! There is a risk of electric shock as it is necessary to approach the live parts with a container in hand, and optical type sprayers have problems with operability as they require optical fibers to be routed around. Therefore, there has always been no risk of electric shock.
構造が簡単で操作や保守の容易な活線・死線の判別装置
が望まれていた。There was a desire for a live wire/dead wire discrimination device that has a simple structure and is easy to operate and maintain.
本発明はこの要望を満たすために、先ず活線・死線の判
別には電界強度測定はどの高精度は要求されないことに
着眼してその判別に液晶を使用し、この液晶の表示電圧
にしきい値があることを利用するものである。次にこの
液晶の活線・死線判別作用を実用に適するように確実な
ものとするために本発明は液晶表示素子の外面に補助電
極を取付けたものでおる。In order to meet this demand, the present invention first focuses on the fact that field strength measurement does not require high precision to distinguish between live wires and dead wires, and uses a liquid crystal for this discrimination, and sets a threshold value to the display voltage of this liquid crystal. It takes advantage of the fact that there is Next, in order to ensure the ability of the liquid crystal to discriminate between live wires and dead wires so as to be suitable for practical use, the present invention has an auxiliary electrode attached to the outer surface of the liquid crystal display element.
本発明の１実施例を図面について説明するに、第１図に
おいて、液晶表示素子１０前後面に補助電極２，２１が
取付けられ、そのうち背面の電極２は活線・死線の判別
対象物４０表面に貼着される。To explain one embodiment of the present invention with reference to the drawings, in FIG. 1, auxiliary electrodes 2, 21 are attached to the front and rear surfaces of a liquid crystal display element 10, of which the electrode 2 on the back surface is connected to the surface of an object 40 for determining live wires and dead wires. will be affixed to.
対象物４は図面では版状のブスバーとして示されるが、
それに限らず他の任意のものであってよく、オた裸電綜
と被覆電線の何れであってもよい。液晶表示素子１の両
電極は第２図に示すようにリード線３．３によって補助
電析２，２′へ接続される。The object 4 is shown as a block-shaped bus bar in the drawing, but
The wire is not limited to this, and may be any other wire, including either a bare wire or a covered wire. Both electrodes of the liquid crystal display element 1 are connected to auxiliary electrodes 2, 2' by lead wires 3.3, as shown in FIG.
また前面の′Ｍ極２’ＩＣはその中央に液晶表示窓５が
開けられ、この窓を通じて液晶表示グー７１の表示の有
無を看取する。Further, a liquid crystal display window 5 is opened in the center of the 'M pole 2' IC on the front side, and the presence or absence of a display on the liquid crystal display 71 can be checked through this window.
液晶を用いた電界の検出には液晶の電気光学効果を利用
できると考えられるが、実にの結果によれは単に液晶を
空間に面いて外（ＨＩＩ電界を印加しても液晶内部には
液晶を表示させるに十分な電界が発生しないことが判明
した。これは液晶自体の静電容量が大きく、また両側を
ガラス状や偏光板に挾まれているためである。そこで上
記のように液晶表示素子１の外に補助電極２，２′を取
付けると、液晶表示素子１の両極間に十分大きいπζ位
差を発生させることができる。It is thought that the electro-optical effect of liquid crystals can be used to detect electric fields using liquid crystals, but the actual results show that it is possible to simply expose the liquid crystal to the outside (even if an HII electric field is applied, there is no liquid crystal inside the liquid crystal). It was found that a sufficient electric field was not generated for display.This is because the capacitance of the liquid crystal itself is large and it is sandwiched between glass or polarizing plates on both sides.Therefore, as described above, the liquid crystal display element By attaching auxiliary electrodes 2 and 2' to the electrodes 1 and 1, a sufficiently large πζ position difference can be generated between the two electrodes of the liquid crystal display element 1.
次に液晶の表示電圧にはしきい値があるので、補助電極
２，２′によって液晶表示素子１の両極間に発生する一
位差が上記表示電圧しきい値を超過するように設定して
おく。すると対象物４が活線の場合には液晶表示素子１
け常に表示を犯出し、この表示は宥５を通じて容易に見
ることができる。Next, since the display voltage of the liquid crystal has a threshold value, it is set so that the one-point difference generated between the two electrodes of the liquid crystal display element 1 by the auxiliary electrodes 2 and 2' exceeds the display voltage threshold value. put. Then, if the object 4 is a live wire, the liquid crystal display element 1
This display is easily visible through the driver.
従って本装置による活線・死線の判別は作業員が液晶の
表示の有無を確しするだけで容易に可能である。Therefore, using this device, a worker can easily distinguish between live wires and dead wires by simply checking the presence or absence of the display on the liquid crystal display.
本発明によれば次のような効果が得られる。（１）液晶
の表示を活線から遠隔の位置で読取ることができるので
、感電の危険性がない。（２）活線・死線の判別を表示
の有無で行うため判断が容易である。According to the present invention, the following effects can be obtained. (1) Since the liquid crystal display can be read at a location remote from live wires, there is no risk of electric shock. (2) It is easy to distinguish between live wires and dead wires by checking whether they are displayed or not.
（３）可動部がなく、構造が簡単で、量産が可能であり
、且つ保守が容易である。(3) There are no moving parts, the structure is simple, mass production is possible, and maintenance is easy.
第１図は本発明による装置の斜視図、第２図は要部の接
続図である。
１：液晶表示素子 ２，２’：補助電極３：リード
線 ４：判定対象物５：液晶表示窓FIG. 1 is a perspective view of the device according to the present invention, and FIG. 2 is a connection diagram of the main parts. 1: Liquid crystal display element 2, 2': Auxiliary electrode 3: Lead wire 4: Judgment object 5: Liquid crystal display window
Claims (1)
記液晶表示素子の電極とを結線し、活線時に充電部近く
の電界によって上記補助電極相互間に発生する電位差が
上記液晶表示素子の表示電圧しきい値を超過するように
設定した活線・死線の判別表示器。Two auxiliary electrodes attached to sandwich the liquid crystal display element are connected to the electrode of the liquid crystal display element, and when the wire is live, the potential difference generated between the auxiliary electrodes due to the electric field near the live part changes the display of the liquid crystal display element. A live wire/dead wire discrimination indicator that is set to exceed the voltage threshold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59125787A JPS613069A (en) | 1984-06-18 | 1984-06-18 | Discrimination display for live and dead wires |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59125787A JPS613069A (en) | 1984-06-18 | 1984-06-18 | Discrimination display for live and dead wires |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS613069A true JPS613069A (en) | 1986-01-09 |
Family
ID=14918848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59125787A Pending JPS613069A (en) | 1984-06-18 | 1984-06-18 | Discrimination display for live and dead wires |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS613069A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6310470U (en) * | 1986-07-09 | 1988-01-23 | ||
| JPS6347279U (en) * | 1986-09-11 | 1988-03-30 | ||
| JPS6375872U (en) * | 1986-11-05 | 1988-05-20 | ||
| JPH01224678A (en) * | 1988-03-04 | 1989-09-07 | Tohoku Electric Power Co Inc | Liquid crystal element structure for electric field sensor |
| WO2004074850A2 (en) | 2003-02-24 | 2004-09-02 | Abb Sp. Z.O.O. | Liquid-crystal voltage indicator |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5754064B2 (en) * | 1978-10-11 | 1982-11-16 |
-
1984
- 1984-06-18 JP JP59125787A patent/JPS613069A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5754064B2 (en) * | 1978-10-11 | 1982-11-16 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6310470U (en) * | 1986-07-09 | 1988-01-23 | ||
| JPS6347279U (en) * | 1986-09-11 | 1988-03-30 | ||
| JPS6375872U (en) * | 1986-11-05 | 1988-05-20 | ||
| JPH01224678A (en) * | 1988-03-04 | 1989-09-07 | Tohoku Electric Power Co Inc | Liquid crystal element structure for electric field sensor |
| WO2004074850A2 (en) | 2003-02-24 | 2004-09-02 | Abb Sp. Z.O.O. | Liquid-crystal voltage indicator |
| JP2006518869A (en) * | 2003-02-24 | 2006-08-17 | エービービー・エスピー．・ゼット．オー．オー． | LCD indicator showing the presence of voltage |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206223099U (en) | Vehicle overall dimension automatic checkout system | |
| EP0071106A1 (en) | Optical voltage and electric field sensor | |
| CN103424604B (en) | A kind of Multi-purpose non-contact electricity tester | |
| US4789035A (en) | Load cell | |
| CN210513023U (en) | Irregular product size metering device | |
| US4810885A (en) | Heated scintillator | |
| CN211014436U (en) | On-line monitoring instrument | |
| CN209994493U (en) | Detect two mesh cameras for 3D display module | |
| CN207148329U (en) | A kind of radioactive pollution detects alarm | |
| JPH07181212A (en) | Surface potential measurement sensor | |
| JP3388020B2 (en) | Diagnosis method for earthquake resistance of buildings | |
| CN107918060A (en) | Electromagnetic field on-line monitoring system and its method of work | |
| CN214750859U (en) | Fixed measuring device for depth position of 3mm of directional dose equivalent rate | |
| CN215005887U (en) | Fixed measuring device for depth position with directional dose equivalent rate of 7mm | |
| JP2527459Y2 (en) | Contact pressure detector | |
| CN219037991U (en) | Building slope warning equipment for building monitoring | |
| JPS6235245A (en) | Measuring instrument for deterioration of operating fluid | |
| CN212567377U (en) | Safety detection device for building structure | |
| CN212966452U (en) | Electricity testing locking device | |
| JP3232580B2 (en) | Zero-phase voltage detector | |
| CN110440755A (en) | A kind of dedicated vertical checkout ruler of architectural engineering | |
| JPS55122161A (en) | Device for measuring velocity of wind | |
| JPH02216716A (en) | Defective insulator detector | |
| JPH02214892A (en) | No-voltage display type electro-mechanical display device | |
| CN206224626U (en) | A kind of driving safety monitoring device |