JPS6354085U - - Google Patents
Info
- Publication number
- JPS6354085U JPS6354085U JP14752586U JP14752586U JPS6354085U JP S6354085 U JPS6354085 U JP S6354085U JP 14752586 U JP14752586 U JP 14752586U JP 14752586 U JP14752586 U JP 14752586U JP S6354085 U JPS6354085 U JP S6354085U
- Authority
- JP
- Japan
- Prior art keywords
- detector
- detection circuit
- difference
- output
- disc
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims 4
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
Description
第１図はこの考案の一実施例のブロツク線図、
第２図は第１図のブロツク線図の回路のタイムチ
ヤート、第３図Ａ，Ｂ，Ｃはこの実施例の使用態
様を示す図、第４図Ａ，Ｂ，Ｃはこの実施例の他
の使用態様を示す図である。
１…センサー部、２…補助電極、３…電極、４
，５…単安定マルチバイブレーター、３０…表示
器。
Figure 1 is a block diagram of an embodiment of this invention.
2 is a time chart of the circuit shown in the block diagram of FIG. 1, FIG. 3 A, B, and C are diagrams showing how this embodiment is used, and FIG. FIG. 1...Sensor part, 2...Auxiliary electrode, 3...Electrode, 4
, 5...monostable multivibrator, 30...indicator.
Claims (1)
するセンサー部を有し、このセンサー部にたくわ
えられる電荷の変化を検知する検知回路を設け、
この検知回路の出力に応じて被検物の誘電率の違
いを相対的に表示する表示手段を有する検知器に
おいて、電源を入れた際検知回路の出力に応じセ
ンサー部へ供給する電流を調整するとともに、前
記表示手段の表示レベルを表示範囲のうち上端及
び下端以外の中間位置の一定レベルに当初設定す
る制御手段を有することを特徴とする検知器。 (2) 前記センサー部を円板状の電極とこれを囲
んで同心的に設けられたリング状の補助電極とか
ら構成し、この各電極を検知器の絶縁性箱体の内
面側に設けたことを特徴とする実用新案登録請求
の範囲第１項に記載の検知器。 (3) 前記検知回路は、前記各電極が時定数設定
端子に各々接続された一対の単安定マルチバイブ
レーターと、この一対の単安定マルチバイブレー
ターの出力パルスの差をとる手段とから成ること
を特徴とする実用新案登録請求の範囲第２項に記
載の検知器。 (4) 前記制御手段は、検知器の電源を入れた当
初の前記一対の単安定マルチバイブレーターの差
分の出力が前記表示手段の表示範囲の中間位置の
一定レベルになるよう前記円板状の電極へ供給す
る電流を制御することを特徴とする実用新案登録
請求の範囲第３項に記載の検知器。[Claims for Utility Model Registration] (1) A sensor having a sensor portion whose capacitance changes depending on the difference in dielectric constant of the test object, and a detection circuit that detects a change in the electric charge stored in the sensor portion;
In a detector having a display means that relatively displays the difference in permittivity of the object to be tested according to the output of the detection circuit, when the power is turned on, the current supplied to the sensor section is adjusted according to the output of the detection circuit. The detector further comprises a control means for initially setting the display level of the display means to a constant level at an intermediate position other than the upper and lower ends of the display range. (2) The sensor section is composed of a disc-shaped electrode and a ring-shaped auxiliary electrode provided concentrically surrounding the disc-shaped electrode, and each electrode is provided on the inner surface of the insulating box of the detector. A detector according to claim 1 of the utility model registration claim, characterized in that: (3) The detection circuit is characterized by comprising a pair of monostable multivibrators in which each of the electrodes is connected to a time constant setting terminal, and means for calculating the difference between the output pulses of the pair of monostable multivibrators. The detector according to claim 2 of the utility model registration claim. (4) The control means controls the disc-shaped electrode so that the output of the difference between the pair of monostable multivibrators at the time when the power of the detector is turned on becomes a constant level at an intermediate position of the display range of the display means. 3. The detector according to claim 3, which controls the current supplied to the detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986147525U JPH0515116Y2 (en) | 1986-09-25 | 1986-09-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986147525U JPH0515116Y2 (en) | 1986-09-25 | 1986-09-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6354085U true JPS6354085U (en) | 1988-04-11 |
| JPH0515116Y2 JPH0515116Y2 (en) | 1993-04-21 |
Family
ID=31060968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986147525U Expired - Lifetime JPH0515116Y2 (en) | 1986-09-25 | 1986-09-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0515116Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001267400A (en) * | 2000-03-16 | 2001-09-28 | Kyocera Corp | Wafer support |
| US7116091B2 (en) * | 2004-03-04 | 2006-10-03 | Zircon Corporation | Ratiometric stud sensing |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58171690A (en) * | 1982-03-11 | 1983-10-08 | ロバ−ト・シ−・フランクリン | Electronic inter-wall post sensor |
| JPS5945585U (en) * | 1982-09-20 | 1984-03-26 | ホーチキ株式会社 | crosspiece detector |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5945585B2 (en) * | 1976-08-24 | 1984-11-07 | 三菱電機株式会社 | Elevator failure detection device |
-
1986
- 1986-09-25 JP JP1986147525U patent/JPH0515116Y2/ja not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58171690A (en) * | 1982-03-11 | 1983-10-08 | ロバ−ト・シ−・フランクリン | Electronic inter-wall post sensor |
| JPS5945585U (en) * | 1982-09-20 | 1984-03-26 | ホーチキ株式会社 | crosspiece detector |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0515116Y2 (en) | 1993-04-21 |
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