JPH0210478Y2 - - Google Patents
Info
- Publication number
- JPH0210478Y2 JPH0210478Y2 JP1979079003U JP7900379U JPH0210478Y2 JP H0210478 Y2 JPH0210478 Y2 JP H0210478Y2 JP 1979079003 U JP1979079003 U JP 1979079003U JP 7900379 U JP7900379 U JP 7900379U JP H0210478 Y2 JPH0210478 Y2 JP H0210478Y2
- Authority
- JP
- Japan
- Prior art keywords
- room
- floor
- magnetic field
- vibration
- magnetically shielded
- 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.)
- Expired
Links
- 230000035699 permeability Effects 0.000 claims description 4
- 239000000696 magnetic material Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 6
- 238000005259 measurement Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000005389 magnetism Effects 0.000 description 3
- 229910000889 permalloy Inorganic materials 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000005668 Josephson effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000000747 cardiac effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 208000019622 heart disease Diseases 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Landscapes
- Building Environments (AREA)
- Details Of Measuring And Other Instruments (AREA)
- Measuring Magnetic Variables (AREA)
Description
【考案の詳細な説明】
本考案は高透磁率磁性体よりなる磁気的に密閉
された室本体と該室の床面とを別々に構成し、前
記室本体と床面とは夫々防振装置を介して大地に
置かれている磁気シールド・ルームに関する。[Detailed description of the invention] The invention consists of a magnetically sealed chamber body made of a high permeability magnetic material and a floor surface of the chamber, and the chamber body and the floor surface are each equipped with a vibration isolator. Concerning a magnetically shielded room that is placed on the ground via.
近年、心臓から発生する微少な磁気信号をジヨ
セフソン効果を利用して測り、心臓病の診断をし
たり、あるいは地球物理学上、岩石の微少な残留
磁気を測定するために、外部磁場の影響を極力少
くした環境を有する高性能磁気シールド・ルーム
が必要となつて来ている。心臓の磁気の計測や残
留磁気の精密な測定を行うためには、磁気シール
ド・ルーム内の磁場が極めて低く、しかも安定性
が良く、さらにはルーム内の磁場分布が広領域に
亘り均一であることが要求される。一般には磁気
シールド・ルームの構成は高透磁率材パーマロイ
等を使用して製作されるが、パーマロイ自体磁性
体であるため、地面から伝わる振動によつて地球
磁場中で振動することになり、シールド内部の磁
場が変動する。このために、シールド・ルーム本
体に防振装置を取り付けて地面からの振動を防止
することが考えられている。 In recent years, the influence of external magnetic fields has been studied to diagnose heart disease by measuring minute magnetic signals generated by the heart using the Josephson effect, or to measure minute residual magnetism in rocks from a geophysical perspective. There is a growing need for high performance magnetically shielded rooms with minimal environmental impact. In order to accurately measure cardiac magnetism and residual magnetism, the magnetic field in a magnetically shielded room must be extremely low and stable, and the magnetic field distribution within the room must be uniform over a wide area. This is required. Generally, magnetically shielded rooms are constructed using high magnetic permeability materials such as permalloy, but since permalloy itself is a magnetic material, it vibrates in the earth's magnetic field due to vibrations transmitted from the ground, and the shield The internal magnetic field fluctuates. To this end, it has been considered to attach a vibration isolator to the main body of the shielded room to prevent vibrations from the ground.
しかしながら、従来の磁気シールド・ルームは
シールド・ルームの本体と床の部分が一体構造に
なつているため、地面から伝わる振動をおさえた
としても磁気シールド・ルーム内にある人間や装
置からの振動をおさえることが出来ないので、磁
場の変動を生じ、安定なシールド・ルームが得ら
れず、精密な微弱磁場測定を行うことが困難であ
つた。 However, in conventional magnetically shielded rooms, the main body of the shielded room and the floor are integrated, so even if vibrations transmitted from the ground are suppressed, vibrations from people and equipment inside the magnetically shielded room can be suppressed. Since it cannot be suppressed, the magnetic field fluctuates, making it impossible to obtain a stable shielded room and making it difficult to perform precise weak magnetic field measurements.
本考案は、かかる欠点を除去するために、磁気
シールド・ルーム本体と床部分を別々に構成し、
地面から伝わる振動系とシールド・ルーム内で測
定中に発生する振動系を分離し、しかもシール
ド・ルーム本体と床のおさえの部分に夫々防振装
置を施し、磁気シールド・ルーム内に発生する磁
場の変動を抑え、微弱な磁場の精密測定を行い得
る磁気シールド・ルームを提供せんとするもので
ある。 In order to eliminate such drawbacks, the present invention configures the magnetically shielded room body and the floor separately,
The vibration system transmitted from the ground and the vibration system generated during measurement inside the shielded room are separated, and vibration isolators are applied to the shielded room itself and the holding part of the floor, respectively, to reduce the magnetic field generated inside the magnetically shielded room. The aim is to provide a magnetically shielded room that can suppress fluctuations in magnetic fields and perform precise measurements of weak magnetic fields.
即ち本考案は、磁気シールド・ルームにおい
て、磁気シールド・ルームの本体と床部分とを分
離する様に構成し、しかも前記シールド本体と床
部分に夫々防振装置を施したことを特徴とする磁
気シールドルームである。 That is, the present invention provides a magnetically shielded room characterized in that the main body and the floor of the magnetically shielded room are separated, and vibration isolators are applied to the shield main body and the floor, respectively. It is a shield room.
次に本考案を図面について説明する。 Next, the present invention will be explained with reference to the drawings.
第１図および第２図は従来の磁気シールド・ル
ームの構造を示し、１は磁気シールド・ルームの
本体でその測壁を高透磁率材パーマロイ板、鉄
板、高導電率のアルミ板、銅板などのシールド材
で構成したものである。 Figures 1 and 2 show the structure of a conventional magnetically shielded room. 1 is the main body of the magnetically shielded room, and its measuring walls are made of high magnetic permeability materials such as permalloy plates, iron plates, high conductivity aluminum plates, and copper plates. It is constructed of shielding material.
第２図の２はシールド・ルームの床部で、この
床部はシールド材の上に直接に接している。第３
図および第４図は夫々本考案の一実施例を示す断
面図である。３は夫々防振装置で床部の振動を防
振するための装置である。４は３と同じ、ゴム部
材、空気バネ、スプリングあるいは流体等による
防振装置で、磁気シールド・ルーム本体の防振の
ための装置である。５はシールド・ルーム内の床
部２と防振装置３を連結する支柱で床の大きさに
応じて３本またはそれ以上の数をもつて構成す
る。６は地面または建造物の床部である。第１
図，第２図の様な従来の磁気シールド・ルームの
構造では、１，２，６が一体構造になつている
が、第４図に示す本考案の26面体の三層構造磁気
シールド・ルーム１では防振装置４を経て地面ま
たは建造物の床６に設置され、一方シールド・ル
ーム床部２も柱５、防振装置３を経て地面または
建造物の床６に設置され振動系が分離されてい
る。 2 in FIG. 2 is the floor of the shield room, and this floor is in direct contact with the top of the shield material. Third
This figure and FIG. 4 are sectional views each showing an embodiment of the present invention. 3 is a vibration isolator, which is a device for isolating the vibrations of the floor. 4 is a vibration isolating device using a rubber member, air spring, spring, fluid, etc., which is the same as 3, and is a device for vibration isolating the main body of the magnetically shielded room. Reference numeral 5 denotes pillars connecting the floor 2 and the vibration isolator 3 in the shield room, and the number of pillars 5 is three or more depending on the size of the floor. 6 is the ground or the floor of a building. 1st
In the conventional magnetic shield room structure as shown in Fig. 2, 1, 2, and 6 are integrated, but the present invention's 26-sided three-layer magnetic shield room structure shown in Fig. 4 1 is installed on the ground or the floor 6 of a building via a vibration isolator 4, while the shield room floor 2 is also installed on the ground or the floor 6 of a building via a column 5 and a vibration isolator 3, so that the vibration system is separated. has been done.
上述の如く本考案によれば地面から伝わる振動
及びシールド・ルーム内部で発生する振動は各防
振装置で減衰されるので、磁気シールド・ルーム
本体の振動はおさえられ、従つて磁場の変動もな
くなる。第５図は従来の磁気シールド・ルーム内
の磁気変動を表わし、第６図は本考案における磁
場変動を示す。図において横軸は時間Ｔを、縦軸
は磁場変動Ｇを示す。本考案の磁場変動Ｇは第５
図に示す従来の磁場変動に比べ極めて小さくなり
微弱な磁場測定において精度の高い測定が出来る
ことを示している。 As mentioned above, according to the present invention, the vibration transmitted from the ground and the vibration generated inside the shield room are attenuated by each vibration isolator, so the vibration of the main body of the magnetic shield room is suppressed, and therefore, fluctuations in the magnetic field are also eliminated. . FIG. 5 shows magnetic fluctuations in a conventional magnetically shielded room, and FIG. 6 shows magnetic field fluctuations in the present invention. In the figure, the horizontal axis represents time T, and the vertical axis represents magnetic field fluctuation G. The magnetic field fluctuation G of this invention is the fifth
This is extremely small compared to the conventional magnetic field fluctuation shown in the figure, indicating that highly accurate measurements can be made in weak magnetic field measurements.
第７図および第８図はそれぞれ第３図および第
４図の防振装置４の具体例を示す。即ち防振装置
４は空気バネを使用する。その圧力補給源として
ガスボンベ７を用いガス管８を通し前記空気バネ
に空気、窒素等のガスを供給し所定の圧力を保持
する。圧力補給源として圧縮機を使用するときは
その機械的振動がシールドルーム内に伝達され好
ましくない。ガスボンベを使用するときはかかる
振動を伴わないためルーム内の磁場振動を極力抑
えることができる。 FIGS. 7 and 8 show specific examples of the vibration isolating device 4 shown in FIGS. 3 and 4, respectively. That is, the vibration isolator 4 uses an air spring. A gas cylinder 7 is used as a pressure supply source, and a gas such as air or nitrogen is supplied to the air spring through a gas pipe 8 to maintain a predetermined pressure. When a compressor is used as a pressure supply source, its mechanical vibrations are transmitted into the shielded room, which is undesirable. When using a gas cylinder, there is no such vibration, so it is possible to suppress the magnetic field vibration in the room as much as possible.
第１図は従来の磁気シールド・ルームの斜視
図、第２図は従来の磁気シールド・ルームの断面
図であり、第３，第４図は本考案の磁気シール
ド・ルームの実施例を示す断面図である。第５図
は従来のシールド・ルームの磁場変動を表わす特
性図、第６図は本考案による磁気シールド・ルー
ムの磁場変動を表わす特性図を示している。また
第７図および第８図はそれぞれ第３図および第４
図の防振装置の具体例を示す。
１……磁気シールド・ルーム本体、２……シー
ルド・ルーム床部、３，４……防振装置、５……
支柱、６……地面又は建造物の床、Ｇ……磁気変
動、Ｔ……時間、７……ガスボンベ、８……ガス
管。
Figure 1 is a perspective view of a conventional magnetically shielded room, Figure 2 is a sectional view of a conventional magnetically shielded room, and Figures 3 and 4 are cross sections showing an embodiment of the magnetically shielded room of the present invention. It is a diagram. FIG. 5 is a characteristic diagram showing magnetic field fluctuations in a conventional shielded room, and FIG. 6 is a characteristic diagram showing magnetic field fluctuations in a magnetically shielded room according to the present invention. Also, Figures 7 and 8 are similar to Figures 3 and 4, respectively.
A specific example of the vibration isolator shown in the figure is shown. 1... Magnetic shield room body, 2... Shield room floor, 3, 4... Vibration isolator, 5...
Pillar, 6... Ground or building floor, G... Magnetic fluctuation, T... Time, 7... Gas cylinder, 8... Gas pipe.
Claims (1)
本体と該室の床面とを別々に構成し、前記室本体
と床面とは夫々防振装置を介して大地に置かれて
いる磁気シールド・ルーム。 A magnetically sealed chamber body made of a high magnetic permeability magnetic material and a floor surface of the chamber are configured separately, and the chamber body and floor surface are each placed on the ground via a vibration isolator. shield room.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979079003U JPH0210478Y2 (en) | 1979-06-12 | 1979-06-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979079003U JPH0210478Y2 (en) | 1979-06-12 | 1979-06-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55179395U JPS55179395U (en) | 1980-12-23 |
| JPH0210478Y2 true JPH0210478Y2 (en) | 1990-03-15 |
Family
ID=29312437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1979079003U Expired JPH0210478Y2 (en) | 1979-06-12 | 1979-06-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0210478Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6903930B2 (en) * | 2017-02-13 | 2021-07-14 | Tdk株式会社 | Magnetic shield room |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52151041U (en) * | 1976-05-12 | 1977-11-16 |
-
1979
- 1979-06-12 JP JP1979079003U patent/JPH0210478Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55179395U (en) | 1980-12-23 |
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