JPS55162078A - Detecting method for magnetic substance - Google Patents

Detecting method for magnetic substance

Info

Publication number
JPS55162078A
JPS55162078A JP6995279A JP6995279A JPS55162078A JP S55162078 A JPS55162078 A JP S55162078A JP 6995279 A JP6995279 A JP 6995279A JP 6995279 A JP6995279 A JP 6995279A JP S55162078 A JPS55162078 A JP S55162078A
Authority
JP
Japan
Prior art keywords
magnetic
magnetic field
axis
detector
magnetic substance
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
JP6995279A
Other languages
Japanese (ja)
Other versions
JPS5830557B2 (en
Inventor
Tomiyo Yamato
Yuji Nozawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kyosan Electric Manufacturing Co Ltd
Original Assignee
Kyosan Electric Manufacturing Co Ltd
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 Kyosan Electric Manufacturing Co Ltd filed Critical Kyosan Electric Manufacturing Co Ltd
Priority to JP54069952A priority Critical patent/JPS5830557B2/en
Publication of JPS55162078A publication Critical patent/JPS55162078A/en
Publication of JPS5830557B2 publication Critical patent/JPS5830557B2/en
Expired legal-status Critical Current

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  • Geophysics And Detection Of Objects (AREA)

Abstract

PURPOSE: To realize the detection for the magnetic substance regardless of the size of the magnetic substance, by providing the magnetic field detector having the directivity in the right-angle coordinates axial direction and then giving the operation to the output magnetic field component of the detector.
CONSTITUTION: Magnetic field detector X is attached vertically to the area under horizontal acrylic plate 1. And small magnet 4 is put on plate 1 and in parallel to direction X and then shifted toward X to be shifted sequentially from the area on axis X toward direction Y to be then shifted toward X. In this case, the directional cosines l, m and n of magnetic efficiency M to axis X, Y and Z feature l=0 and m=n=0 each since efficiency m is turned toward X. And maximum value HZmax of magnetic field component HZ of axis Z features 48M/(25×51/2×Z3); while magnetic field component HX of axis X features M[(3X2/r5)-(1/r3)]. Then the ratio is obtained between HZmax and HX to obtain the side distance. Accordingly, the detection becomes possible in case the magnetic substance passes through a fixed range of the side distance from the side of the detector and regardless of the size of the passing magnetic substance since the value of the ratio can be satisfied even with use of the small magnet having the different magnetic efficiency.
COPYRIGHT: (C)1980,JPO&Japio
JP54069952A 1979-06-06 1979-06-06 How to detect magnetic substances Expired JPS5830557B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54069952A JPS5830557B2 (en) 1979-06-06 1979-06-06 How to detect magnetic substances

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54069952A JPS5830557B2 (en) 1979-06-06 1979-06-06 How to detect magnetic substances

Publications (2)

Publication Number Publication Date
JPS55162078A true JPS55162078A (en) 1980-12-17
JPS5830557B2 JPS5830557B2 (en) 1983-06-29

Family

ID=13417489

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54069952A Expired JPS5830557B2 (en) 1979-06-06 1979-06-06 How to detect magnetic substances

Country Status (1)

Country Link
JP (1) JPS5830557B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0274892A (en) * 1988-09-10 1990-03-14 Kyosan Electric Mfg Co Ltd Method and apparatus for detecting overhead passage of magnetic body
JPH03282393A (en) * 1990-03-30 1991-12-12 Hitachi Ltd Device and method for magnetic body detection

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH043851Y2 (en) * 1985-05-22 1992-02-05
DE3532119A1 (en) * 1985-09-10 1987-03-19 Ver Glaswerke Gmbh ELECTRICALLY HEATED CAR GLASS DISC
JPS62150658U (en) * 1986-03-14 1987-09-24
GB2192023B (en) * 1986-06-26 1990-01-04 Pilkington Brothers Plc An edge-encapsulated glazing module
JPS6369393U (en) * 1986-10-21 1988-05-10

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0274892A (en) * 1988-09-10 1990-03-14 Kyosan Electric Mfg Co Ltd Method and apparatus for detecting overhead passage of magnetic body
JPH03282393A (en) * 1990-03-30 1991-12-12 Hitachi Ltd Device and method for magnetic body detection

Also Published As

Publication number Publication date
JPS5830557B2 (en) 1983-06-29

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