JPS6146463U - magnetic sensing device - Google Patents

magnetic sensing device

Info

Publication number
JPS6146463U
JPS6146463U JP13169784U JP13169784U JPS6146463U JP S6146463 U JPS6146463 U JP S6146463U JP 13169784 U JP13169784 U JP 13169784U JP 13169784 U JP13169784 U JP 13169784U JP S6146463 U JPS6146463 U JP S6146463U
Authority
JP
Japan
Prior art keywords
magnetic
coil
detection
detection device
sensing 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.)
Granted
Application number
JP13169784U
Other languages
Japanese (ja)
Other versions
JPH0428058Y2 (en
Inventor
士郎 中川
昇 山中
Original Assignee
ティーディーケイ株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ティーディーケイ株式会社 filed Critical ティーディーケイ株式会社
Priority to JP13169784U priority Critical patent/JPS6146463U/en
Publication of JPS6146463U publication Critical patent/JPS6146463U/en
Application granted granted Critical
Publication of JPH0428058Y2 publication Critical patent/JPH0428058Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Dry Development In Electrophotography (AREA)

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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案に係る磁気的検知装置の電気回路図、第
２図は本考案に係る磁気的検知装置の同期検波作用を説
明するための波形図、第３図は本考案に係る磁気的検知
装置の更に具体的な電気回路図、第４図は本考案に係る
磁気的検知装置を構成する差動トランスの断面図、第５
図は従来の磁気的検知装置の電気回路図である。 １・・・・・・交流駆動源、２・・・・・・差動トラン
ス、４・・・・・・同期検波回路、Ｎ１・・・・・・一
次コイル、Ｎ２・・・・・・検知コイル、Ｎ２。Fig. 1 is an electric circuit diagram of the magnetic detection device according to the present invention, Fig. 2 is a waveform diagram for explaining the synchronous detection action of the magnetic detection device according to the present invention, and Fig. 3 is the magnetic detection device according to the present invention. A more specific electric circuit diagram of the target detection device, FIG. 4 is a sectional view of a differential transformer constituting the magnetic detection device according to the present invention, and FIG.
The figure is an electrical circuit diagram of a conventional magnetic sensing device. 1... AC drive source, 2... Differential transformer, 4... Synchronous detection circuit, N1... Primary coil, N2... Detection coil, N2.

Claims (3)

【実用新案登録請求の範囲】[Scope of utility model registration request] （１）交流駆動源で駆動される一次コイルと、該一次コ
イルに結合される検知コイル及び基準コイルとを具備し
、前記検知コイル近傍における磁性体の存在、分量、濃
度または距離等を、前記検知コイルと前記基準コイルと
の差動出力に基づいて検知する磁気的検知装置において
、前記基準コイルと前記検知コイルの差動出力を前記一
次コイル駆動周波数で同期検波を行なう同期検波回路を
備えることを特徴とする磁気的検知装置。(1) A primary coil driven by an AC drive source, a detection coil and a reference coil coupled to the primary coil, and the presence, amount, concentration, distance, etc. of a magnetic substance in the vicinity of the detection coil can be detected as described above. A magnetic detection device that performs detection based on a differential output between a detection coil and the reference coil, including a synchronous detection circuit that performs synchronous detection of the differential output between the reference coil and the detection coil at the primary coil drive frequency. A magnetic detection device featuring: （２）前記磁性体は、磁性キャリアと絶縁性トナーとを
含むことを特徴とする実用新案登録請求の範囲第１項に
記載の磁気的検知装置。(2) The magnetic sensing device according to claim 1, wherein the magnetic material includes a magnetic carrier and an insulating toner. （３）前記基準コイルは、その磁路の一部に磁気効率を
可変調整する導電体また磁性体を含むことを特徴とする
実用新案登録請求の範囲第１項または第２項に記載の磁
気的検知装置。(3) The magnetic field according to claim 1 or 2, wherein the reference coil includes a conductive material or a magnetic material that variably adjusts the magnetic efficiency in a part of its magnetic path. Target detection device.
JP13169784U 1984-08-30 1984-08-30 magnetic sensing device Granted JPS6146463U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13169784U JPS6146463U (en) 1984-08-30 1984-08-30 magnetic sensing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13169784U JPS6146463U (en) 1984-08-30 1984-08-30 magnetic sensing device

Publications (2)

Publication Number Publication Date
JPS6146463U true JPS6146463U (en) 1986-03-28
JPH0428058Y2 JPH0428058Y2 (en) 1992-07-07

Family

ID=30690272

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13169784U Granted JPS6146463U (en) 1984-08-30 1984-08-30 magnetic sensing device

Country Status (1)

Country Link
JP (1) JPS6146463U (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6367583A (en) * 1986-09-09 1988-03-26 Nec Corp Magnetism detector
JPH032588A (en) * 1989-05-30 1991-01-08 Kajima Corp Nondestructive detecting device for buried conductor
JPH0486588A (en) * 1990-07-31 1992-03-19 Nishimatsu Constr Co Ltd M type deep steel reinforcement prober
JPH04317349A (en) * 1991-04-17 1992-11-09 Nec Corp Inspecting apparatus for integrated circuit device
JP2012185033A (en) * 2011-03-04 2012-09-27 Makome Kenkyusho:Kk Proximity sensor
JP2012185032A (en) * 2011-03-04 2012-09-27 Makome Kenkyusho:Kk Displacement sensor
JP2016517289A (en) * 2013-03-13 2016-06-16 エンドマグネティクス リミテッド Magnetic detector

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5910814A (en) * 1982-07-12 1984-01-20 Hitachi Metals Ltd Level sensor for toner

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5910814A (en) * 1982-07-12 1984-01-20 Hitachi Metals Ltd Level sensor for toner

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6367583A (en) * 1986-09-09 1988-03-26 Nec Corp Magnetism detector
JPH032588A (en) * 1989-05-30 1991-01-08 Kajima Corp Nondestructive detecting device for buried conductor
JPH0486588A (en) * 1990-07-31 1992-03-19 Nishimatsu Constr Co Ltd M type deep steel reinforcement prober
JPH04317349A (en) * 1991-04-17 1992-11-09 Nec Corp Inspecting apparatus for integrated circuit device
JP2012185033A (en) * 2011-03-04 2012-09-27 Makome Kenkyusho:Kk Proximity sensor
JP2012185032A (en) * 2011-03-04 2012-09-27 Makome Kenkyusho:Kk Displacement sensor
JP2016517289A (en) * 2013-03-13 2016-06-16 エンドマグネティクス リミテッド Magnetic detector

Also Published As

Publication number Publication date
JPH0428058Y2 (en) 1992-07-07

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