JPS6124682U - High sensitivity sensor - Google Patents
High sensitivity sensorInfo
- Publication number
- JPS6124682U JPS6124682U JP10890884U JP10890884U JPS6124682U JP S6124682 U JPS6124682 U JP S6124682U JP 10890884 U JP10890884 U JP 10890884U JP 10890884 U JP10890884 U JP 10890884U JP S6124682 U JPS6124682 U JP S6124682U
- Authority
- JP
- Japan
- Prior art keywords
- coil
- output
- detection
- reference coil
- eddy current
- 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
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案の一実施例の構成を示す断面図、第２図
ａ−ｃは第１図で被検出物体が位置Ａ〜Ｃにあるときの
検出差動出力の特性を示す図である。
１・・・駆動発振器、２・・・検出出力端子、３・・・
基準出力端子、４・・・Ｅ形コア、５・・・駆動コイル
、６・・・検出コイノペ７・・・基準コイル、８・・・
差動増幅器、９・・・うず電流発生素子、１０・・・被
検出物体。FIG. 1 is a sectional view showing the configuration of an embodiment of the present invention, and FIGS. 2 a to 2 c are diagrams showing the characteristics of the detected differential output when the detected object is at positions A to C in FIG. 1. be. 1... Drive oscillator, 2... Detection output terminal, 3...
Reference output terminal, 4... E-type core, 5... Drive coil, 6... Detection Koinope 7... Reference coil, 8...
Differential amplifier, 9... Eddy current generating element, 10... Object to be detected.
Claims (3)
イルと、該駆動コイルの一方と磁気的に結合している検
出コイルと、前記駆動コイルの他方と磁気的に結合して
いる基準コイルとからなり、前記検出コイルの出力と前
記基準コイルの出力との差動分である検出差動出力を出
力することにより前記検出コイルの近傍における磁性体
または導電体の存在を検出するセンサにおし）で、前記
検出差動出力と前記基準コイルの出力との位相差を弁別
して検出動作を行なうことを特徴とする高惑度センサ。(1) Two sets of drive coils driven by a common drive signal, a detection coil magnetically coupled to one of the drive coils, and a reference coil magnetically coupled to the other drive coil. The sensor detects the presence of a magnetic substance or a conductive substance in the vicinity of the detection coil by outputting a detection differential output that is the differential between the output of the detection coil and the output of the reference coil. (b), wherein a detection operation is performed by discriminating a phase difference between the detected differential output and the output of the reference coil.
ための小片を設けたことを特徴とする実用新案登録請求
の範囲第１項に記載の高感度センサ。(2) The high-sensitivity sensor according to claim 1, characterized in that a small piece for generating eddy current loss is provided near the reference coil.
置調整の可能なものであることを特徴とする実用新案登
録請求の範囲第２項に記載の高惑度センサ。(3) The highly sensitive sensor according to claim 2, wherein the small piece for generating eddy current loss is adjustable in position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10890884U JPS6124682U (en) | 1984-07-20 | 1984-07-20 | High sensitivity sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10890884U JPS6124682U (en) | 1984-07-20 | 1984-07-20 | High sensitivity sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6124682U true JPS6124682U (en) | 1986-02-14 |
Family
ID=30668080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10890884U Pending JPS6124682U (en) | 1984-07-20 | 1984-07-20 | High sensitivity sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6124682U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03241105A (en) * | 1990-02-16 | 1991-10-28 | Nippon Telegr & Teleph Corp <Ntt> | Road surface cutter |
-
1984
- 1984-07-20 JP JP10890884U patent/JPS6124682U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03241105A (en) * | 1990-02-16 | 1991-10-28 | Nippon Telegr & Teleph Corp <Ntt> | Road surface cutter |
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