JPH0518703Y2 - - Google Patents
Info
- Publication number
- JPH0518703Y2 JPH0518703Y2 JP3148885U JP3148885U JPH0518703Y2 JP H0518703 Y2 JPH0518703 Y2 JP H0518703Y2 JP 3148885 U JP3148885 U JP 3148885U JP 3148885 U JP3148885 U JP 3148885U JP H0518703 Y2 JPH0518703 Y2 JP H0518703Y2
- Authority
- JP
- Japan
- Prior art keywords
- case
- current collector
- detection port
- static electricity
- shutter
- 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
- 238000001514 detection method Methods 0.000 claims description 18
- 230000005611 electricity Effects 0.000 claims description 12
- 230000003068 static effect Effects 0.000 claims description 12
- 230000010355 oscillation Effects 0.000 claims description 4
- 239000000941 radioactive substance Substances 0.000 claims description 2
- 230000005855 radiation Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 239000012857 radioactive material Substances 0.000 description 2
- 229910052695 Americium Inorganic materials 0.000 description 1
- LXQXZNRPTYVCNG-UHFFFAOYSA-N americium atom Chemical compound [Am] LXQXZNRPTYVCNG-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005421 electrostatic potential Methods 0.000 description 1
- 210000004247 hand Anatomy 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 210000003813 thumb Anatomy 0.000 description 1
Landscapes
- Measurement Of Current Or Voltage (AREA)
Description
【考案の詳細な説明】
「産業上の利用分野」
本考案は、静電気が帯電しているか否かを検知
する静電気検知器に関する。[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a static electricity detector that detects whether or not static electricity is charged.
「従来の技術」
従来、静電気を検知するものとして、静電気帯
電物体を測定して電位計で指示する静電気電位測
定器が提供されている。"Prior Art" Conventionally, as a device for detecting static electricity, there has been provided an electrostatic potential measuring device that measures an electrostatically charged object and indicates the result using an electrometer.
「考案が解決しようとする問題点」
しかし、これは、電位を測定指示することを主
眼としているため、電位計の他に種々の回路部品
を必要とし、高価であるとともに、両手で持たな
ければ運べない程の大きさ及び重さで、安易、軽
便に用いることができない。``Problems that the invention attempts to solve'' However, since this method focuses on measuring and instructing electric potential, it requires various circuit parts in addition to the electrometer, is expensive, and requires holding with both hands. It is too large and heavy to be carried, so it cannot be used easily or lightly.
本考案の目的は、電位を測定指示することより
も、容易かつ軽便に使用できることを主眼とし、
片手で操作でき、しかも静電気が帯電しているか
否かを被検知物と無接触の状態で簡単に検知で
き、かつまた安全でもある静電気検知器を提供す
ることにある。 The purpose of this invention is to make it easier and more convenient to use than to give instructions for measuring potential.
To provide a static electricity detector which can be operated with one hand, can easily detect whether or not it is charged with static electricity without contacting an object to be detected, and is also safe.
「問題点を解決するための手段」
本考案の静電気検知器は、前面に検出口が形成
された片手で把持できる大きさのケース内に、放
射性物質の空気電離作用によつて静電気を集電す
る集電器を、検出口に対向させて内蔵するととも
に、この検出口を開閉する導電性シヤツタを手動
開閉自在に装着し、さらに集電器の検出電圧を増
幅する増幅器と、これによつて増幅された電圧を
基準電圧と比較する比較器と、発振器と比較器が
出力を生じたとき発振器の発振信号によつて作動
されるブザー等の報知器とをケースに内蔵してな
ることを特徴とする。``Means for solving the problem'' The static electricity detector of this invention collects static electricity through the air ionization effect of radioactive materials inside a case that is large enough to be held with one hand and has a detection port formed on the front. A current collector is built in facing the detection port, and a conductive shutter that opens and closes this detection port can be manually opened and closed. The case is characterized by a comparator for comparing the generated voltage with a reference voltage, and an alarm such as a buzzer that is activated by the oscillation signal of the oscillator when the oscillator and comparator produce an output. .
「作用」
従つて、ケースを把持してその検出口を被検知
物に向け、シヤツタを手動操作して検出口を開く
と、集電器からの放射線が照射されて被検知物と
集電器との間の空間が電離され、被検知物の電位
が集電器に集電される。このとき、被検知物が基
準値以上に帯電していればブザー等の報知器が作
動して、そのことが報知される。不使用時には、
シヤツタによつて検出口を閉じて放射線の外部へ
の放射を抑制する。``Operation'' Therefore, when you grasp the case and point the detection port at the object to be detected, and manually operate the shutter to open the detection port, the radiation from the current collector will be irradiated and the connection between the object to be detected and the current collector will be irradiated. The space between them is ionized, and the potential of the object to be detected is collected by a current collector. At this time, if the object to be detected is charged to a level higher than a reference value, an alarm such as a buzzer is activated to notify the object. When not in use,
The detection port is closed with a shutter to suppress radiation to the outside.
「実施例」
以下に本考案の一実施例を図面に基づき詳述す
る。``Example'' An example of the present invention will be described below in detail based on the drawings.
本静電気検知器は、第１，２，３図に示すよう
に、片手で把持できる大きさの長方形ケース１に
全構成部品を内蔵し、このケース１の後面開口を
裏蓋２で閉じた単品構造になつている。これらケ
ース１及び裏蓋２は帯電しにくい材質（例えば半
導体）とし、その全表面（外面及び内面）に導電
性塗料を塗布するとよい。 As shown in Figures 1, 2, and 3, this static electricity detector is a single unit with all components built into a rectangular case 1 that can be held with one hand, and the rear opening of this case 1 is closed with a back cover 2. It's structured. It is preferable that the case 1 and the back cover 2 are made of a material that is not easily charged (for example, a semiconductor), and that their entire surfaces (outer and inner surfaces) are coated with conductive paint.
ケース１の上壁３の中央には円形の検出口４が
穿設され、また前壁５のほぼ中央には横長のボタ
ン窓６が穿設されている。このボタン窓６の下辺
縁には係合凹部７が形成されている。前壁５には
また所要個所に多数の通音孔８が穿設されてい
る。 A circular detection port 4 is formed in the center of the upper wall 3 of the case 1, and a horizontally elongated button window 6 is formed approximately in the center of the front wall 5. An engagement recess 7 is formed at the lower edge of the button window 6. The front wall 5 is also provided with a large number of sound holes 8 at required locations.
ボタン窓６には切替ボタン９が左右摺動自在に
嵌装されている。この切替ボタン９はケース１内
の板バネ１０によつて下方に付勢され、常時は、
下面に形成した係合凸部１１をボタン窓６の係合
凹部７に嵌合させて左右動を規制される中立位置
に保持されている。そして、この切替ボタン９
は、板バネ１０に抗して持ち上げて係合凸部１１
を係合凹部７より外すことによつて、ボタン窓６
の左端あるいは右端に切り替え偏倚させることが
できる。切替ボタン９を右端に設定すると後述の
ように検出モードになり、左端に設定すると電池
チエツクモードになる。 A switching button 9 is fitted into the button window 6 so as to be slidable left and right. This switching button 9 is biased downward by a leaf spring 10 inside the case 1, and is normally
The engaging protrusion 11 formed on the lower surface is fitted into the engaging recess 7 of the button window 6, and the button window 6 is held in a neutral position where horizontal movement is restricted. And this switching button 9
is lifted up against the plate spring 10 to remove the engaging protrusion 11.
By removing the button window 6 from the engagement recess 7
It can be switched to the left end or right end. When the switching button 9 is set to the right end, the mode is set to detection mode as described later, and when set to the left end, the mode is set to battery check mode.
切替ボタン９の後側には、ケース１内において
金属板製の縦長のシヤツタ１２が起立固着されて
いる。このシヤツタ１２は、その上端部を逆Ｌ字
状に折曲して上端に、検出口４を内側から開閉す
る水平な開閉部１２ａを形成している。シヤツタ
１２は切替ボタン９の切り替えに伴いケース１の
内面に沿つて摺動し、切替ボタン９が上記のよう
に中立位置に保持されているときには、シヤツタ
１２の開閉部１２ａは検出口４を閉じる。 On the rear side of the switching button 9, a vertically long shutter 12 made of a metal plate is erected and fixed in the case 1. The shutter 12 has its upper end bent into an inverted L-shape to form a horizontal opening/closing part 12a for opening and closing the detection port 4 from the inside. The shutter 12 slides along the inner surface of the case 1 as the switch button 9 is switched, and when the switch button 9 is held at the neutral position as described above, the opening/closing part 12a of the shutter 12 closes the detection port 4. .
ケース１内の下端部には電池ケース１３が設置
され、この電池ケース１３に電池１４が着脱自在
に挿着されている。ケース１内にはさらに回路基
板１５が配置され、上記通音孔８に対応する位置
においてこの回路基板１５にブザー１６が取り付
けられているとともに、回路基板１５の上端部に
集電器１７が取り付けられ、さらに回路基板１５
には第４図に示す電気回路が実装されている。 A battery case 13 is installed at the lower end of the case 1, and a battery 14 is detachably inserted into the battery case 13. A circuit board 15 is further arranged inside the case 1, and a buzzer 16 is attached to the circuit board 15 at a position corresponding to the sound hole 8, and a current collector 17 is attached to the upper end of the circuit board 15. , and further circuit board 15
The electric circuit shown in FIG. 4 is mounted on the .
集電器１７は金属製の円筒ケース内に収容さ
れ、数マイクロキユリ程度の極めて弱い放射性物
質（アメリシウム等）を内蔵している。 The current collector 17 is housed in a metal cylindrical case, and contains an extremely weak radioactive material (such as americium) of several micrometers.
第４図において、集電器１７の検出電圧は増幅
器１８によつて増幅された後、オートゼロ回路１
９を介しプラス電位用及びマイナス電位用の一対
の比較器２０，２１に入力され、電圧設定回路２
２で設定した基準電圧と比較される。 In FIG. 4, the detection voltage of the current collector 17 is amplified by the amplifier 18, and then the auto-zero circuit 1
9 to a pair of comparators 20 and 21 for positive potential and negative potential, and voltage setting circuit 2
It is compared with the reference voltage set in step 2.
オートゼロ回路１９にはオートゼロ用スイツチ
２３が接続されている。このスイツチ２３は切替
ボタン９によつて操作され、シヤツタ１２が閉じ
ているときにはオンになつてオートゼロ機能を保
持し、比較器２０，２１の入力電圧をゼロにす
る。一方、切替ボタン９を右端に偏倚させてシヤ
ツタ１２を開くと、スイツチ２３はオフになり、
オートゼロ回路１９は増幅器１８からの出力をそ
のまま両比較器２０，２１へ入力する。これら比
較器２０，２１は、増幅された電圧が基準電圧以
上になつたとき出力を生じ、その出力はORゲー
ト２４を介しANDゲート２５に入力される。こ
のANDゲート２５の入力側には発振器２６が接
続され、出力側には上記ブザー１６が接続されて
いる。 An auto-zero switch 23 is connected to the auto-zero circuit 19. This switch 23 is operated by the changeover button 9, and is turned on when the shutter 12 is closed to maintain the auto-zero function and set the input voltages of the comparators 20 and 21 to zero. On the other hand, when the switch button 9 is biased to the right end and the shutter 12 is opened, the switch 23 is turned off.
The auto-zero circuit 19 inputs the output from the amplifier 18 as it is to both comparators 20 and 21. These comparators 20 and 21 produce an output when the amplified voltage exceeds a reference voltage, and the output is inputted to an AND gate 25 via an OR gate 24. An oscillator 26 is connected to the input side of the AND gate 25, and the buzzer 16 is connected to the output side.
電池ケース１３に挿着した電池１４は電源スイ
ツチ２７と接続される。この電源スイツチ２７は
切替ボタン９を上記のように板バネ１０に抗して
持ち上げるとオンになり、右端あるいは左端に偏
倚させるとオン状態を保持する。さらに、電池１
４はこの電源スイツチ２７及び電池チエツク用ス
イツチ２８を介して電池チエツク回路２９に接続
される。電池チエツク用スイツチ２８は切替ボタ
ン９を左端に偏倚させるとオンなる。これがオン
になると、電池チエツク回路２９が作動し、その
出力がORゲート２４を介してANDゲート２５に
入力され、電池１４の電圧が低下していると発振
器２６からの発振信号がANDゲート２５を介し
てブザー１６に入力され、これが鳴動する。 The battery 14 inserted into the battery case 13 is connected to a power switch 27. The power switch 27 is turned on when the switching button 9 is lifted up against the leaf spring 10 as described above, and remains on when it is biased to the right or left end. Furthermore, battery 1
4 is connected to a battery check circuit 29 via this power switch 27 and a battery check switch 28. The battery check switch 28 is turned on when the switch button 9 is biased to the left end. When this is turned on, the battery check circuit 29 is activated, and its output is input to the AND gate 25 via the OR gate 24. If the voltage of the battery 14 is low, an oscillation signal from the oscillator 26 is applied to the AND gate 25. The signal is input to the buzzer 16 via the buzzer 16, which sounds.
本静電気検知器を使用するには、ケース１を片
手で把持し、その検出口４を被検知物より離した
状態でそれに指向させ、例えば親指で切替ボタン
９を操作して持ち上げながら右端へ偏倚させる。
この偏倚によつてシヤツタ１２は検出口４を開放
し、集電器１７内の放射性物質からの放射線が検
出口４より放射され、集電器１７と被検知物との
間の空気が電離されてイオンが生じ、被検知物と
集電器１７との間に抵抗R1、集電器１７とその
金属性円筒ケースとの間に抵抗R2を介在する導
電路がそれぞれ形成される。ここで、被検知物の
帯電電位をＶとすると、集電器１７の対地電位
Vsは、
Vs＝｛R2／（R1＋R2）｝・Ｖ
で表され、この電位Vsは上記のように増幅器１
７で増幅された後、比較器２０，２１によつて基
準電圧と比較される。 To use this static electricity detector, hold the case 1 with one hand, point the detection port 4 away from the object to be detected, and tilt it to the right edge while lifting it by operating the switch button 9 with your thumb, for example. let
Due to this bias, the shutter 12 opens the detection port 4, and radiation from the radioactive substance in the current collector 17 is emitted from the detection port 4, and the air between the current collector 17 and the object to be detected is ionized and ions are generated. A conductive path is formed between the object to be detected and the current collector 17 with a resistor R 1 interposed therebetween, and a conductive path with a resistor R 2 interposed between the current collector 17 and its metallic cylindrical case. Here, if the charged potential of the object to be detected is V, then the ground potential of the current collector 17 is
Vs is expressed as Vs={R 2 /(R 1 +R 2 )}・V, and this potential Vs is applied to the amplifier 1 as described above.
After being amplified by 7, it is compared with a reference voltage by comparators 20 and 21.
従つて、被検知物が一定の電位以上（プラスあ
るいはマイナス）帯電していると、発振器２６の
発振信号がANDゲート２５を通り、ブザー１６
が鳴動するもので、帯電していることをこれによ
つて報知することができる。 Therefore, when the object to be detected is charged at a certain potential or higher (plus or minus), the oscillation signal from the oscillator 26 passes through the AND gate 25 and the buzzer 16
It makes a sound that lets you know that it is charged.
使用しないときには、シヤツタ１２によつて検
出口４を閉じて放射線の放射を抑制しておく。 When not in use, the detection port 4 is closed by the shutter 12 to suppress radiation emission.
なお、ブザー１６に代えてランプを用いてもよ
い。 Note that a lamp may be used instead of the buzzer 16.
「考案の効果」
以上の通り本考案の静電気検知器は、携帯でき
るとともに片手で持つて操作でき、しかも被検知
物と無接触の状態で検知できるので、容易かつ軽
便に使用でき、また使用しないときはシヤツタに
よつて放射線の外部放射を抑制できるため安全で
ある。``Effects of the invention'' As described above, the static electricity detector of this invention is portable, can be held and operated with one hand, and can detect without contacting the object to be detected, so it is easy and convenient to use and can be used easily. It is safe because the external radiation of radiation can be suppressed by the shutter.
図面は本考案の一実施例を示し、第１図は斜視
図、第２図は一部切欠正面図、第３図は第２図の
−線位置の縦断面図、第４図は電気的構成を
示すブロツク図である。
１……ケース、２……裏蓋、３……ケースの上
壁、４……検出口、５……前壁、６……ボタン
窓、７……係合凹部、８……通音孔、９……切替
ボタン、１０……板バネ、１１……係合凸部、１
２，１２ａ……シヤツタ及びその開閉部、１３…
…電池ケース、１４……電池、１５……回路基
板、１６……ブザー、１７……集電器、１８……
増幅器、１９……オートゼロ回路、２０，２１…
…比較器、２２……電圧設定回路、２３……オー
トゼロ用スイツチ、２４……ORゲート、２５…
…ANDゲート、２６……発振器、２７……電源
スイツチ、２８……電池チエツク用スイツチ、２
９……電池チエツク回路。
The drawings show one embodiment of the present invention, in which Fig. 1 is a perspective view, Fig. 2 is a partially cutaway front view, Fig. 3 is a vertical sectional view taken along the - line in Fig. 2, and Fig. 4 is an electrical diagram. FIG. 2 is a block diagram showing the configuration. 1...Case, 2...Back cover, 3...Top wall of case, 4...Detection port, 5...Front wall, 6...Button window, 7...Engagement recess, 8...Sound hole , 9... Switching button, 10... Leaf spring, 11... Engaging convex portion, 1
2, 12a...shutter and its opening/closing part, 13...
...Battery case, 14...Battery, 15...Circuit board, 16...Buzzer, 17...Current collector, 18...
Amplifier, 19... Auto zero circuit, 20, 21...
... Comparator, 22 ... Voltage setting circuit, 23 ... Auto zero switch, 24 ... OR gate, 25 ...
...AND gate, 26 ... oscillator, 27 ... power switch, 28 ... battery check switch, 2
9...Battery check circuit.
Claims (1)
きさのケース内に、放射性物質の空気電離作用に
よつて静電気を集電する集電器を、上記検出口に
対向させて内蔵するとともに、この検出口を開閉
する導電性シヤツタを手動開閉自在に装着し、さ
らに上記集電器の検出電圧を増幅する増幅器と、
これによつて増幅された電圧を基準電圧と比較す
る比較器と、発振器と、上記比較器が出力を生じ
たとき発振器の発振信号によつて作動されるブザ
ー等の報知器とを上記ケースに内蔵してなること
を特徴とする静電気検知器。 Inside the case, which has a detection port on the front and is large enough to be held with one hand, is a current collector that collects static electricity due to air ionization of radioactive substances, facing the detection port. A conductive shutter that opens and closes the mouth is attached so that it can be opened and closed manually, and an amplifier that amplifies the detected voltage of the current collector;
A comparator that compares the amplified voltage with a reference voltage, an oscillator, and an alarm such as a buzzer that is activated by the oscillation signal of the oscillator when the comparator generates an output are installed in the above case. A static electricity detector characterized by being built-in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3148885U JPH0518703Y2 (en) | 1985-03-07 | 1985-03-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3148885U JPH0518703Y2 (en) | 1985-03-07 | 1985-03-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61147974U JPS61147974U (en) | 1986-09-12 |
| JPH0518703Y2 true JPH0518703Y2 (en) | 1993-05-18 |
Family
ID=30532144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3148885U Expired - Lifetime JPH0518703Y2 (en) | 1985-03-07 | 1985-03-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0518703Y2 (en) |
-
1985
- 1985-03-07 JP JP3148885U patent/JPH0518703Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61147974U (en) | 1986-09-12 |
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