JPS643579A - Magnetic shielding body - Google Patents
Magnetic shielding bodyInfo
- Publication number
- JPS643579A JPS643579A JP62159992A JP15999287A JPS643579A JP S643579 A JPS643579 A JP S643579A JP 62159992 A JP62159992 A JP 62159992A JP 15999287 A JP15999287 A JP 15999287A JP S643579 A JPS643579 A JP S643579A
- Authority
- JP
- Japan
- Prior art keywords
- helmet
- dies
- shell
- internally
- magnetic field
- 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
- Measuring Magnetic Variables (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
Abstract
PURPOSE:To completely shut off incoming noise magnetic fields so that measurement with good accuracy can be made by consisting a titled body of a shell which has internally a space capable of enclosing an object to be examined and is engaged dividably to two parts and constituting the shell of a superconducting material. CONSTITUTION:A helmet 2 which is the shell to cover the outside of a head part 1 is constituted of the superconducting material. This helmet 2 has internally the space capable of sufficiently enveloping the head part 2 and is provided with at least a piece of skid sensor. A slight magnetic field is detected by using this skid sensor without being affected by the external magnetic fields. The material constituting the helmet 2 is formed by preparing the powdery superconductor of, for example, a Y-Ba-Sr-Cu-O system, adding an aq. soln. dissolved with a slight amt. of PVA, kneading the ceramics to an easily pressable state, putting the mixture into press dies of a helmet shape and molding the same. The dies are so designed that the dies are divided to two parts and steps 31 and 32 of ruggedness do not create a part where the external magnetic field leaks when the dies are butted to each other. As the result, a costly magnetic shielding room is not necessitated.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62159992A JPS643579A (en) | 1987-06-26 | 1987-06-26 | Magnetic shielding body |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62159992A JPS643579A (en) | 1987-06-26 | 1987-06-26 | Magnetic shielding body |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS643579A true JPS643579A (en) | 1989-01-09 |
Family
ID=15705636
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62159992A Pending JPS643579A (en) | 1987-06-26 | 1987-06-26 | Magnetic shielding body |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS643579A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4998593A (en) * | 1989-03-31 | 1991-03-12 | Aisin Seiki Kabushiki Kaisha | Steering and brake controlling system |
JP2012152515A (en) * | 2011-01-28 | 2012-08-16 | Konica Minolta Holdings Inc | Magnetism sensor and biomagnetism measurement apparatus using the same |
-
1987
- 1987-06-26 JP JP62159992A patent/JPS643579A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4998593A (en) * | 1989-03-31 | 1991-03-12 | Aisin Seiki Kabushiki Kaisha | Steering and brake controlling system |
JP2012152515A (en) * | 2011-01-28 | 2012-08-16 | Konica Minolta Holdings Inc | Magnetism sensor and biomagnetism measurement apparatus using the same |
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