JPH0712934Y2 - High voltage live line approach alarm - Google Patents
High voltage live line approach alarmInfo
- Publication number
- JPH0712934Y2 JPH0712934Y2 JP5983791U JP5983791U JPH0712934Y2 JP H0712934 Y2 JPH0712934 Y2 JP H0712934Y2 JP 5983791 U JP5983791 U JP 5983791U JP 5983791 U JP5983791 U JP 5983791U JP H0712934 Y2 JPH0712934 Y2 JP H0712934Y2
- Authority
- JP
- Japan
- Prior art keywords
- alarm
- antenna member
- voltage live
- safety cap
- alarm device
- 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.)
- Expired - Lifetime
Links
- 238000013459 approach Methods 0.000 title claims description 22
- 238000001514 detection method Methods 0.000 claims description 26
- 230000035945 sensitivity Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Measurement Of Current Or Voltage (AREA)
- Helmets And Other Head Coverings (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は、高電圧電路の作業にお
いて作業者が高電圧充電部へ異常に接近した場合等に自
動的に警報音を発して注意を換気する高圧活線接近警報
器に関するものである。[Field of Industrial Application] The present invention is a high-voltage live line approach alarm device that automatically emits an alarm sound and ventilates attention when a worker abnormally approaches a high-voltage charging part during work on a high-voltage circuit. It is about.
【０００２】[0002]
【従来の技術】高電圧電路の作業において作業者が高電
圧充電部へ異常に接近した場合や活線を停電と誤認して
充電部に近接した場合の感電災害防止対策として高圧活
線接近警報器（以下、警報器と称す。）があり、その具
体例を図３乃至図６を参照して次に示す。最初にその動
作原理を図３に示すと、まず警報器（１）を腕に付けて
充電されている線路（２）に近付いたとする。そうする
と、充電線（２）と警報器（１）との間の浮遊静電容量
（Ｃａ）を通じて微小な電流（Ｉａ）（０．０１μＡ程
度）が人体（Ｂ）を経てアースに流れ、所定の警報開始
距離（Ｓ）の時の動作電流値を超えたとき警報器（１）
は警報音を発する。2. Description of the Related Art A high-voltage live line approach warning is provided as a measure for preventing an electric shock hazard when a worker abnormally approaches a high-voltage charging part during work on a high-voltage electric circuit or when a live line is mistaken for a power failure and approaches a charging part. Device (hereinafter referred to as an alarm device), and a specific example thereof will be described below with reference to FIGS. 3 to 6. First, when the operation principle is shown in FIG. 3, it is assumed that the alarm device (1) is first attached to the arm and approaches the charged line (2). Then, a minute electric current (Ia) (about 0.01 μA) flows to the ground through the human body (B) through the floating electrostatic capacitance (Ca) between the charging line (2) and the alarm device (1), and a predetermined amount is obtained. When the operating current value at the alarm start distance (S) is exceeded, an alarm device (1)
Makes an alarm sound.
【０００３】上記警報器（１）の電気的構成を図４を参
照して次に示すと、同図において（１）は警報器、
（２）は充電線、（３）は検出電極、（４）はレベル検
出回路、（５）は断続回路、（６）は音響発振回路、
（７）は電子ブザー、（８）は電池、（Ｔｓ）はテスト
スイッチ、（Ｃａ）（Ｃｂ）は浮遊静電容量である。上
記構成において充電線（２）に警報器（１）が接近する
と、充電線（２）と検出電極（３）間の静電容量（Ｃ
ａ）を経て微小電流（Ｉａ）が流れる。そして、レベル
検出回路（４）から電池（８）及びプリント基板、人体
との浮遊静電容量（Ｃｂ）を経て人体、アースに流れ
る。そこで、上記電流（Ｉａ）がレベル検出回路（４）
の動作設定値を超えたとき、断続回路（５）、音響発振
回路（６）が動作して電子ブザー（７）より警報音を出
す。又、テストスイッチ（Ｔｓ）を押すと、電池
（８）、テストスイッチ（Ｔｓ）、検出電極（３）、及
びレベル検出回路（４）の経路で、内蔵の電池（８）か
ら模擬的な入力電流が流れて警報器（１）が動作し、電
池の有無や検出回路の異常有無の簡単なチェックを行な
うことが出来る。The electrical configuration of the alarm device (1) will be described below with reference to FIG. 4, in which (1) is an alarm device.
(2) is a charging line, (3) is a detection electrode, (4) is a level detection circuit, (5) is an intermittent circuit, (6) is an acoustic oscillation circuit,
(7) is an electronic buzzer, (8) is a battery, (Ts) is a test switch, and (Ca) and (Cb) are stray capacitances. When the alarm (1) approaches the charging line (2) in the above configuration, the capacitance (C) between the charging line (2) and the detection electrode (3) is increased.
A minute current (Ia) flows through a). Then, it flows from the level detection circuit (4) to the human body and the ground through the battery (8), the printed circuit board, and the floating electrostatic capacitance (Cb) with the human body. Therefore, the current (Ia) is the level detection circuit (4).
When the operation setting value is exceeded, the intermittent circuit (5) and the acoustic oscillation circuit (6) operate and the electronic buzzer (7) emits an alarm sound. Further, when the test switch (Ts) is pushed, a simulated input from the built-in battery (8) is made in the path of the battery (8), the test switch (Ts), the detection electrode (3) and the level detection circuit (4). A current flows and the alarm device (1) operates, and it is possible to easily check the presence or absence of a battery and the presence or absence of an abnormality in the detection circuit.
【０００４】上記警報器（１）は、図５に示すように、
バンド（９）に着脱自在に取り付けられて着衣の上から
検出部が外側になるように上腕部に装着する。或いは、
近年、図６に示すように、作業用安全帽（１０）の後部
に警報器（１）を取り付けたものもある。The alarm device (1) is, as shown in FIG.
It is removably attached to the band (9) and is attached to the upper arm so that the detection part is on the outside of the clothes. Alternatively,
In recent years, as shown in FIG. 6, there has also been a device in which an alarm device (1) is attached to the rear part of the work safety cap (10).
【０００５】[0005]
【考案が解決しようとする課題】解決しようとする課題
は、警報器（１）をバンド（９）、又は安全帽（１０）
の後部に取り付けた場合、検出範囲が一方向のみになっ
て鉄道電気設備の作業においては依然として危険を伴う
点である。The problem to be solved is to set the alarm device (1) to the band (9) or the safety hat (10).
If it is attached to the rear part, the detection range is only one direction, which is still dangerous in the work of railway electric equipment.
【０００６】[0006]
【課題を解決するための手段】本考案は、安全帽後部に
取り付けた警報器検知部と、上記警報器検知部より安全
帽外側面に沿って左右に延在した所定長の検出用アンテ
ナ部材とを具備したことを特徴とする。DISCLOSURE OF THE INVENTION The present invention is directed to an alarm detector attached to a rear portion of a safety cap, and an antenna member for detection having a predetermined length extending from the alarm detector left and right along the outer surface of the safety cap. And is provided.
【０００７】[0007]
【作用】上記技術的手段によれば、安全帽後部に取り付
けた警報器検知部より所定長の検出用アンテナ部材を安
全帽外側面に沿って左右に延在させ、略全方向より高圧
活線の接近を検出する。According to the above technical means, a detection antenna member of a predetermined length is extended left and right along the outer side surface of the safety cap from the alarm detector attached to the rear part of the safety cap, and the high voltage live line is extended from almost all directions. Detect the approach of.
【０００８】[0008]
【実施例】本考案の実施例を図１及び図２を参照して以
下に説明する。まず図１において（１１）は警報器検知
部、（１２）は所定長の検出用アンテナ部材である。上
記警報器検知部（１１）は、図２に示すように、従来の
警報器（１）と同様の構成を有し、安全帽（１０）の後
部に取り付けられる。アンテナ部材（１２）は、警報器
検知部（１１）の検出電極（３）から安全帽（１０）の
外側面に沿って左右に所定長、延在してなり、後述する
ように、略全方向からの高圧活線接近検出を可能にす
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. First, in FIG. 1, (11) is an alarm detector, and (12) is a detection antenna member having a predetermined length. As shown in FIG. 2, the alarm detector (11) has the same structure as the conventional alarm (1) and is attached to the rear part of the safety cap (10). The antenna member (12) extends from the detection electrode (3) of the alarm detector (11) to the left and right along the outer surface of the safety cap (10) for a predetermined length, and as described later, substantially the entire length. Enables high-voltage live line approach detection from any direction.
【０００９】上記構成に基づき本考案の動作を次に説明
する。まず図１に示すように、安全帽（１０）の前方に
充電線（２ａ）がある場合、アンテナ部材（１２）の外
表面と充電線（２ａ）との間の浮遊静電容量（Ｃｃ）、
及びアンテナ部材（１２）の内表面と頭部（Ｈ）との間
の浮遊静電容量（Ｃｄ）だけでなく、頭部（Ｈ）との隙
間を通り、アンテナ部材（１２）の内表面と充電線（２
ａ）との間の浮遊静電容量（Ｃｅ）を通じて微小電流が
流れる。（但し、浮遊静電容量は右半面のみ描いて図示
を簡略化する。）この時、静電容量（Ｃｄ）を通じてア
ースに流れる微小電流に対し、静電容量（Ｃｃ）（Ｃ
ｅ）からアンテナ部材（１２）を経て警報器検知部（１
１）に流れる微小電流が増大して前方充電線（２ａ）の
接近検出感度が従来よりも大きく向上する。The operation of the present invention based on the above configuration will be described below. First, as shown in FIG. 1, when there is a charging wire (2a) in front of the safety cap (10), a floating capacitance (Cc) between the outer surface of the antenna member (12) and the charging wire (2a). ,
And not only the floating capacitance (Cd) between the inner surface of the antenna member (12) and the head (H) but also the gap between the head (H) and the inner surface of the antenna member (12). Charging line (2
A minute electric current flows through the floating capacitance (Ce) between a). (However, the floating electrostatic capacitance is drawn only on the right half surface to simplify the illustration.) At this time, the electrostatic capacitance (Cc) (C
e) via the antenna member (12) to the alarm detector (1
The minute current flowing through 1) increases, and the approach detection sensitivity of the front charging line (2a) is greatly improved as compared with the conventional case.
【００１０】又、安全帽（１０）の後方に充電線（２
ｂ）がある場合、従来と同様、警報器検知部（１１）の
検出電極（３）と充電線（２ｂ）との間の浮遊静電容量
（Ｃａ）だけでなく、アンテナ部材（１２）との間の浮
遊静電容量（Ｃｆ）、及び検出電極（３）と頭部（Ｈ）
との間の浮遊静電容量（Ｃｇ）、更に上記浮遊静電容量
（Ｃｄ）を通じてそれぞれ微小電流が流れる。この時、
静電容量（Ｃａ）（Ｃｆ）を通じて充電線（２ｂ）より
微小電流が警報器検知部（１１）に流れる一方、静電容
量（Ｃｄ）（Ｃｇ）を経てアースに流れる微小電流が増
加する。そこで、アンテナ部材（１２）が長くなる程、
アースに流れる微小電流がふえて後方充電線（２ｂ）の
接近検出感度が低下していくため、十分な感度を得るよ
うにアンテナ部材（１２）の長さを設定する。尚、アン
テナ部材（１２）の無い場合とその２種類の長さの各場
合における方向別検知離隔の測定結果を次表に示す。Further, a charging line (2) is provided behind the safety cap (10).
When there is b), as in the conventional case, not only the floating capacitance (Ca) between the detection electrode (3) of the alarm detector (11) and the charging line (2b) but also the antenna member (12). Capacitance (Cf) between electrodes, and detection electrode (3) and head (H)
A minute current flows through the floating electrostatic capacitance (Cg) between and, and further through the floating electrostatic capacitance (Cd). This time,
A minute current flows from the charging line (2b) to the alarm detector (11) through the capacitances (Ca) (Cf), while a minute current flows to the ground via the capacitances (Cd) (Cg). Therefore, the longer the antenna member (12) is,
Since the approach current detection sensitivity of the rear charging line (2b) is reduced due to the small current flowing to the ground, the length of the antenna member (12) is set so as to obtain sufficient sensitivity. The following table shows the measurement results of the direction-dependent detection distance in the case where the antenna member (12) is absent and in the cases of the two types of lengths.
【００１１】[0011]
【表１】 [Table 1]
【００１２】上記測定結果より、上述した如く、アンテ
ナ部材（１２）が長くなる程、前方向の接近検出感度が
大きくなる一方、後部方向の感度が低下していくことが
知られる。そこで、アンテナ部材（１２）を所定の長さ
に設定すると、略全方向より高圧活線の接近を検出出来
る。From the above measurement results, as described above, it is known that the longer the antenna member (12), the higher the approach detection sensitivity in the front direction and the lower the sensitivity in the rear direction. Therefore, when the antenna member (12) is set to have a predetermined length, it is possible to detect the approach of the high voltage live line from almost all directions.
【００１３】[0013]
【考案の効果】本考案によれば、安全帽後部に取り付け
た警報器検知部より安全帽外側面に沿って左右に所定長
の検出用アンテナ部材を延在したから、略全方向より高
圧活線の接近を検出出来るようになる。EFFECTS OF THE INVENTION According to the present invention, a detection antenna member of a predetermined length is extended left and right along the outer side surface of the safety cap from the alarm detector attached to the rear portion of the safety cap, so that the high voltage is activated in almost all directions. It becomes possible to detect the approach of lines.
【図１】本考案に係る高圧活線接近警報器の実施例を示
す平面図である。FIG. 1 is a plan view showing an embodiment of a high-voltage live-line approach alarm device according to the present invention.
【図２】本考案に係る高圧活線接近警報器の実施例を示
す回路図である。FIG. 2 is a circuit diagram showing an embodiment of a high-voltage live-line approach alarm device according to the present invention.
【図３】高圧活線接近警報器の動作原理を示す概略側面
図である。FIG. 3 is a schematic side view showing the operating principle of the high-voltage live-line approach alarm device.
【図４】従来の高圧活線接近警報器の具体例を示す回路
図である。FIG. 4 is a circuit diagram showing a specific example of a conventional high-voltage live-line approach alarm device.
【図５】バンドに取り付けた従来の高圧活線接近警報器
を示す斜視図である。FIG. 5 is a perspective view showing a conventional high-voltage live-line approach alarm attached to a band.
【図６】安全帽後部に取り付けた従来の高圧活線接近警
報器を示す平面図である。FIG. 6 is a plan view showing a conventional high-voltage hot line approach alarm attached to the rear part of the safety cap.
１０ 安全帽 １１ 警報器検知部 １２ 検出用アンテナ部材 10 Safety cap 11 Alarm detector 12 Antenna member for detection
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭52−119963（ＪＰ，Ａ) 特開 昭64−17195（ＪＰ，Ａ) 特公 昭41−4941（ＪＰ，Ｂ１) 実公 昭44−18625（ＪＰ，Ｙ１) 実公 昭37−23374（ＪＰ，Ｙ１) ─────────────────────────────────────────────────── --Continued from the front page (56) References JP-A-52-119963 (JP, A) JP-A-64-17195 (JP, A) JP-B-41-4941 (JP, B1) JP-B-44- 18625 (JP, Y1) Showa 37-23374 (JP, Y1)
Claims (1)
と、上記警報器検知部より安全帽外側面に沿って左右に
延在した所定長の検出用アンテナ部材とを具備したこと
を特徴とする高圧活線接近警報器。1. An alarm device detection part attached to the rear part of the safety cap, and a detection antenna member of a predetermined length extending from the alarm device detection part to the left and right along the outer surface of the safety cap. A high-voltage live line approach alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5983791U JPH0712934Y2 (en) | 1991-07-30 | 1991-07-30 | High voltage live line approach alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5983791U JPH0712934Y2 (en) | 1991-07-30 | 1991-07-30 | High voltage live line approach alarm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0514932U JPH0514932U (en) | 1993-02-26 |
| JPH0712934Y2 true JPH0712934Y2 (en) | 1995-03-29 |
Family
ID=13124738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5983791U Expired - Lifetime JPH0712934Y2 (en) | 1991-07-30 | 1991-07-30 | High voltage live line approach alarm |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0712934Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS617345U (en) * | 1984-06-20 | 1986-01-17 | オカモト株式会社 | Air bag for air support device |
| JP7306872B2 (en) * | 2019-05-16 | 2023-07-11 | 株式会社関電工 | AC voltage source proximity detection method and detection voltage detector |
-
1991
- 1991-07-30 JP JP5983791U patent/JPH0712934Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0514932U (en) | 1993-02-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7733078B2 (en) | Self-test probe design & method for non-contact voltage detectors | |
| JP7128298B2 (en) | Device for detecting the presence or absence of an occupant inside the passenger compartment of a vehicle | |
| JPH0712934Y2 (en) | High voltage live line approach alarm | |
| JP7306872B2 (en) | AC voltage source proximity detection method and detection voltage detector | |
| CN203365533U (en) | Entire-loop AC self-check high-voltage electroscope | |
| DE69914490D1 (en) | ELECTRIC FENCE DEVICE | |
| JP2022182256A (en) | Electric field proximity detection method, voltage detector | |
| JP2016127607A (en) | Dc voltage power failure confirmation device and dc voltage power failure confirmation method | |
| CA2607922C (en) | Self-test probe design and method for non-contact voltage detectors | |
| JP3172629B2 (en) | Current / voltage detector | |
| JP2535841Y2 (en) | Voltage detector | |
| CN204719116U (en) | Alarming in short range of electric power wrister | |
| US6310557B1 (en) | Circuit and device to detect grounding problems in electrical soldering irons | |
| JPH023946B2 (en) | ||
| JPH0650781Y2 (en) | Voltage detector | |
| CN203101491U (en) | Non-contact type adjustable test pen | |
| JP2022079006A (en) | Ac voltage source approach detection electroscope | |
| CN213481240U (en) | Insulating pad with reminding function | |
| JP3079001U (en) | Air ion generator | |
| JPH0425664Y2 (en) | ||
| JPS5823086Y2 (en) | Flame detection device test circuit | |
| JPS6392389A (en) | Water level detector of washing machine | |
| CN2101879U (en) | Multifunctional test pencil | |
| JPS6395096A (en) | Water level detector of washing machine etc. | |
| KR200163633Y1 (en) | Upper garmet of work clothes with electroscopic function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19950926 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |