JPH03243866A - Live-line approach warning device - Google Patents
Live-line approach warning deviceInfo
- Publication number
- JPH03243866A JPH03243866A JP2038299A JP3829990A JPH03243866A JP H03243866 A JPH03243866 A JP H03243866A JP 2038299 A JP2038299 A JP 2038299A JP 3829990 A JP3829990 A JP 3829990A JP H03243866 A JPH03243866 A JP H03243866A
- Authority
- JP
- Japan
- Prior art keywords
- radio wave
- transmitter
- live
- charging
- person
- 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
- 238000013459 approach Methods 0.000 title claims abstract description 10
- 238000001514 detection method Methods 0.000 abstract description 13
- 230000005684 electric field Effects 0.000 abstract description 8
- 230000035945 sensitivity Effects 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 7
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000004397 blinking Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 210000000707 wrist Anatomy 0.000 description 1
Landscapes
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Measurement Of Current Or Voltage (AREA)
- Emergency Alarm Devices (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は、充電部に人が近づいた時に、表示や警報をし
て注意を喚起する、活線接近警報器の検出方式に関する
ものである。[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a detection method for a live wire proximity alarm that issues a display or alarm to call attention when a person approaches a live part. .
「従来の技術」
活線接近警報器は普通、人が携帯し、携帯者が充電部に
近づくと表示や警報をして注意を喚起する。``Prior Art'' A live wire proximity alarm is usually carried by a person and alerts the user by displaying a display or warning when the person approaches a live part.
従来の活線接近警報器は充電部と大地間の電界の強さを
検出する方式で、電界中に置かれた２枚の電極板が充電
部に接近し、電極の両端に発生した電圧が、しきい値を
超えると表示、警報する。Conventional live wire proximity alarms detect the strength of the electric field between a live part and the ground, and when two electrode plates placed in the electric field approach a live part, the voltage generated at both ends of the electrodes is detected. , displays and warns when the threshold is exceeded.
「発明が解決しようとする課題」
上記の検出方式は構成が簡単であるが、電界の強さは周
囲の環境構造の影響を受は易いため、例えば、至近に構
造物がある場合には、電界分布が変化して、動作感度が
低下したりする。"Problem to be Solved by the Invention" Although the above detection method has a simple configuration, the strength of the electric field is easily affected by the surrounding environment structure. The electric field distribution changes and the operating sensitivity decreases.
このため、携帯者が危険距離に近づいても表示や警報を
しない場合が生じ、逆に感度を高めると、不要な動作を
して混乱を招くことがあった。For this reason, there are cases in which the device does not display or issue a warning even when the person carrying the device approaches a dangerous distance, and conversely, if the sensitivity is increased, unnecessary operations may occur, causing confusion.
「課題を解決するための手段」
本発明の特徴は、周囲の環境、構造物の影響を受けるこ
となく、充電部に対し等距離で動作させる手段として、
充電部側には充電中だけ微弱電波を発信する発信装置を
取り付け、人が携帯する活線接近警報器本体は、その電
波を受信して表示や警報をする検出方式にある。“Means for Solving the Problems” The present invention is characterized by:
A transmitting device that emits weak radio waves only during charging is attached to the charging part, and the live wire proximity alarm that people carry uses a detection method that receives these radio waves and issues a display or warning.
「作用」
第工図を用いて本発明の詳細な説明する。第■図は本発
明の全体を示すブロック図である。"Operation" The present invention will be explained in detail using the drawings. FIG. 3 is a block diagram showing the entirety of the present invention.
第５図は、従来の活線接近警報器４の構成を示す図て、
電界中に置いた２枚の電極板３の両端に発生した電圧を
増幅部５１て増幅し、その大きさがレベル検出部５２の
しきい値を超えたら表示警報部５３を駆動して出力する
。電源は電池５４から供給する。この方法では、周辺に
構造物があると、充電部から等距離にあっても、その影
響で電極板両端に発生する電圧か小さくなり、動作しな
い場合か出る。FIG. 5 is a diagram showing the configuration of a conventional live wire proximity alarm 4.
The voltage generated at both ends of the two electrode plates 3 placed in the electric field is amplified by the amplifying section 51, and when the magnitude exceeds the threshold of the level detecting section 52, the display alarm section 53 is driven and output. . Power is supplied from a battery 54. In this method, if there are structures in the vicinity, even if they are equidistant from the live parts, the voltage generated across the electrode plate will be reduced, and the device may not work.
第１図の１は発信装置て、これを取り付けた電線路や機
器が充電状態の時、所定の周波数、所定のレベルの電波
を発信する。充・停電中の判別は電界中に置いた電極板
３の両端の電圧有無により行う。Reference numeral 1 in FIG. 1 indicates a transmitter, which emits radio waves at a predetermined frequency and level when the electric line or equipment to which it is attached is in a charging state. Discrimination between charging and power outage is made by the presence or absence of voltage across both ends of the electrode plate 3 placed in an electric field.
他方は、作業者か携帯する活線接近警報器本体２て、発
信装置１からの電波を受信し、その強さがしきい値以上
であれば表示、警報して携帯者の注意を喚起する。本発
明によれば、電波の直進範囲内では、周辺の構造物の影
響を受けにくい分、検出感度か安定する。即ち充電部か
ら機等距離で動作する。On the other hand, the live wire proximity alarm body 2 carried by the worker receives the radio waves from the transmitting device 1, and if the strength of the radio waves exceeds a threshold value, a display is displayed and an alarm is issued to call the wearer's attention. According to the present invention, detection sensitivity is stabilized within the range of straight forward movement of radio waves because it is less affected by surrounding structures. That is, it operates at the same distance from the charging part.
「実施例」
第２ａ図および第２ｂ図は、本発明の第１の実施例を説
明するためのブロック図である。第２ａ図は発信装置側
で、工事の時に活線箇所に仮設する危険標識板（図面略
）に組み込む。電源は電池を使用する。Embodiment FIGS. 2a and 2b are block diagrams for explaining a first embodiment of the present invention. Figure 2a shows the transmitter side, which is incorporated into a danger sign board (not shown) that will be temporarily installed at a live wire location during construction. The power source uses batteries.
発信装置１は充 停電検出部２１、発信部２２と電池２
３て構成する。充・停電検出部２工は、電界中に置かれ
た電極板３の両端に電圧が発生している時、電線路や機
器が充電状態にあるとして出力し、発信部２２を起動す
る。発信部２２は充停電検出部２１が出力している間、
電池２３から電源供給を受けて、所定の周波数、出力の
電波を発信する。The transmitting device 1 includes a charging/power failure detecting section 21, a transmitting section 22, and a battery 2.
3. Configure. When voltage is generated at both ends of the electrode plate 3 placed in the electric field, the charging/power outage detection unit 2 outputs that the electric line or equipment is in a charging state, and activates the transmitting unit 22. While the charging/power failure detection unit 21 is outputting, the transmitting unit 22
It receives power from the battery 23 and transmits radio waves at a predetermined frequency and output.
第２ｂ図は、活線接近警報器本体側で、発信装置上の電
波を受信する受信部２４、表示警報部２５、と電池２３
からなる。受信した電波の強さがしきい値以上の時、受
信部２４は出力し、後段の表示警報部２５を駆動する。Figure 2b shows a receiving section 24 that receives radio waves from a transmitting device, a display alarm section 25, and a battery 23 on the live wire proximity alarm main body side.
Consisting of When the strength of the received radio wave is equal to or higher than the threshold value, the receiving section 24 outputs an output and drives the display/alarm section 25 at the subsequent stage.
活線接近警報器本体は作業者が腕などに装身して使用し
、光と音で注意を喚起する。検出感度が安定したことか
ら、受信部２４の検出感度を可変にしておけば感動距離
を設定することが出来、また、信号の大きさによって別
々に動作する表示警報部を設けるようにすれば、充電部
への接近度合によって音色や音量を変えるなどの応用も
出来る。The live wire proximity alarm is worn by workers on their wrists and uses light and sound to alert them. Since the detection sensitivity has been stabilized, if the detection sensitivity of the receiving section 24 is made variable, it is possible to set the impression distance, and if a display alarm section is provided that operates separately depending on the magnitude of the signal, Applications such as changing the tone and volume depending on the degree of proximity to the live part can also be used.
第３図は、本発明の第２の実施例を説明するためのブロ
ック図である。発信装置１°を工事の時に仮設して使用
する課電表示器（図面略）に組み込む。この場合は発信
装置↑−自身も表示するので、注意喚起能力が向上する
。FIG. 3 is a block diagram for explaining a second embodiment of the present invention. The transmitter 1° will be incorporated into a power display (not shown) that will be temporarily installed during construction. In this case, since the transmitting device ↑- itself is also displayed, the ability to attract attention is improved.
発信装置↑゛には充・停電検出部２１、発信部２２、電
池２３のほかに、点滅信号を得るための駆動部３１と液
晶素子３２が加わる。電線路や機器が充電状態であれば
、実施例１と同様に電波を発信し、同時に液晶素子を点
滅表示する。The transmitting device ↑゛ includes a charging/power failure detecting section 21, a transmitting section 22, a battery 23, and a driving section 31 and a liquid crystal element 32 for obtaining a blinking signal. If the electric line or equipment is in a charging state, it transmits radio waves as in the first embodiment, and at the same time flashes the liquid crystal element.
太陽電池や長寿命の電池を使用すれば、常設形の課電表
示器と兼用することもできる。If solar cells or long-life batteries are used, it can also be used as a permanent power display.
活線接近警報器本体の測は、実施例■の場合と全く同じ
である。The measurement of the main body of the live wire proximity alarm is exactly the same as in Example (2).
第４図は、本発明の第３の実施例を説明するための図で
ある。対象となる活線域が広い場合は、発信装置を多数
設置する代りにアンテナ線だけを延長する。アンテナ線
は安全区画用の綱やネットと兼用する。敷設の自由度を
高めるために、充停電検出部４１は、電極板のあとに増
幅回路を設け、充電部から離れた位置で電線路や機器の
充停電を検出する。FIG. 4 is a diagram for explaining a third embodiment of the present invention. If the target live line area is wide, just extend the antenna line instead of installing multiple transmitters. The antenna wire can also be used as a rope or net for the safety zone. In order to increase the degree of freedom in installation, the charge/failure detection section 41 includes an amplifier circuit after the electrode plate, and detects charge/failure of the electric line or equipment at a position away from the charging section.
「発明の効果」
本発明による活線接近警報器は、付近に構造物かあって
も動作距離が影響を受けにくいので、これを携帯した人
が電線路や機器の充電部に接近した時、より確実に注意
喚起が出来る。``Effects of the Invention'' The operating distance of the live wire proximity alarm according to the present invention is not easily affected even if there are structures nearby, so when a person carrying the device approaches a live wire or a live part of a device, It is possible to alert people more reliably.
第■図は、本発明の詳細な説明するための全体を示すフ
ロック図。
第２図、第３図、第４図は実施例を、第５図は従来の活
線接近警報器の構成と動作を説明するための図である。
図において、
丁、１゛↑“′は発信装置
２は活線接近警報器本体
３は電極板
４は従来の活線接近警報器
２１は発信装置の充・停電検出部
２２、を発信部
２３よ電池
３１ま表示警報付き発信装置の駆動部
３２ｉ液晶素子
４１よ増幅回路を追加した充・停電検出部５１は従来の
活線接近警報器の増幅部
５２はレベル検出部
５３は表示警報部
５４は電池である。FIG. 3 is a block diagram showing the entire structure for explaining the present invention in detail. FIGS. 2, 3, and 4 show examples, and FIG. 5 is a diagram for explaining the configuration and operation of a conventional live wire proximity alarm. In the figure, 1゛↑"' is the transmitting device 2, the live wire proximity alarm body 3 is the electrode plate 4, the conventional live wire proximity alarm 21 is the charge/power failure detection section 22 of the transmitting device, and the transmitting section 23. The battery 31, the drive unit 32 of the transmitting device with display alarm, the liquid crystal element 41, the charge/power failure detection unit 51 with an added amplifier circuit, the amplification unit 52 of the conventional live wire approach alarm, the level detection unit 53, the display alarm unit 54 is a battery.
Claims (1)
示警報して注意を喚起する活線接近警報器において、充
電部側に取り付け、充電中のみ電波を発する発信装置と
、その電波を受信して表示警報する本体で構成すること
を特徴とした活線接近警報器。A live wire proximity alarm that is carried by a person and displays an alarm to call attention when a person approaches a power line or a live part of a device, includes a transmitting device that is attached to the live part side and emits radio waves only while charging, and the radio wave. A live wire proximity alarm comprising a main body that receives and displays an alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2038299A JPH03243866A (en) | 1990-02-21 | 1990-02-21 | Live-line approach warning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2038299A JPH03243866A (en) | 1990-02-21 | 1990-02-21 | Live-line approach warning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03243866A true JPH03243866A (en) | 1991-10-30 |
Family
ID=12521431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2038299A Pending JPH03243866A (en) | 1990-02-21 | 1990-02-21 | Live-line approach warning device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03243866A (en) |
-
1990
- 1990-02-21 JP JP2038299A patent/JPH03243866A/en active Pending
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