JPS5647755A - Detector for magnetic foreign matter - Google Patents
Detector for magnetic foreign matterInfo
- 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
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
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53117457A (en) * | 1977-03-24 | 1978-10-13 | Densoku Kougiyou Kk | Metal detector |
-
1979
- 1979-09-26 JP JP12347079A patent/JPS5647755A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53117457A (en) * | 1977-03-24 | 1978-10-13 | Densoku Kougiyou Kk | Metal detector |
Cited By (1)
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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