JPS5647755A - Detector for magnetic foreign matter - Google Patents

Detector for magnetic foreign matter

Info

Publication number
JPS5647755A
JPS5647755A JP12347079A JP12347079A JPS5647755A JP S5647755 A JPS5647755 A JP S5647755A JP 12347079 A JP12347079 A JP 12347079A JP 12347079 A JP12347079 A JP 12347079A JP S5647755 A JPS5647755 A JP S5647755A
Authority
JP
Japan
Prior art keywords
detector
detectors
foreign matter
sensor
magnetism
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
Application number
JP12347079A
Other languages
Japanese (ja)
Inventor
Shinjiro Takeuchi
Taku Yamada
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.)
SUKAI ALUM KK
Sky Aluminium Co Ltd
Mishima Kosan Co Ltd
Original Assignee
SUKAI ALUM KK
Sky Aluminium Co Ltd
Mishima Kosan 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 SUKAI ALUM KK, Sky Aluminium Co Ltd, Mishima Kosan Co Ltd filed Critical SUKAI ALUM KK
Priority to JP12347079A priority Critical patent/JPS5647755A/en
Publication of JPS5647755A publication Critical patent/JPS5647755A/en
Pending legal-status Critical Current

Links

Landscapes

  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

PURPOSE: To accurately detect magnetic foreign matter in order to protect processes and products by providing a sensor comprising magnetism detectors and a noise detector, an amplifier, an alarm and a signal processor.
CONSTITUTION: A sensor 10 comprises a group of detectors: one unit of a detector 10a to be a noise detector and 14 units of detectors 11aW11g and 12aW12g to be magnetism detectors are laterally arranged on a belt-shaped aluminium plate having a needed width adjacently to each other at proper intervals. The noise detector 10a, which uses a detector of the same type as the magnetism detectors, is located at a position where it detects no foreign matter (iron piece) in the aluminium plate, and all the signals detected by the detector 10a are supposed to be noises. The output from each detector of the sensor 10 is fed through an amplifier 20 to a signal processor 30, the output from which actuates an alarm 40.
COPYRIGHT: (C)1981,JPO&Japio
JP12347079A 1979-09-26 1979-09-26 Detector for magnetic foreign matter Pending JPS5647755A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12347079A JPS5647755A (en) 1979-09-26 1979-09-26 Detector for magnetic foreign matter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12347079A JPS5647755A (en) 1979-09-26 1979-09-26 Detector for magnetic foreign matter

Publications (1)

Publication Number Publication Date
JPS5647755A true JPS5647755A (en) 1981-04-30

Family

ID=14861417

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12347079A Pending JPS5647755A (en) 1979-09-26 1979-09-26 Detector for magnetic foreign matter

Country Status (1)

Country Link
JP (1) JPS5647755A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0210181A (en) * 1988-06-28 1990-01-12 Murata Mfg Co Ltd Magnetic sensor device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53117457A (en) * 1977-03-24 1978-10-13 Densoku Kougiyou Kk Metal detector

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53117457A (en) * 1977-03-24 1978-10-13 Densoku Kougiyou Kk Metal detector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0210181A (en) * 1988-06-28 1990-01-12 Murata Mfg Co Ltd Magnetic sensor device

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