CN114980714B - Triaxial magnetic compensation coil structure suitable for opening and closing magnetic shielding room door body - Google Patents
Triaxial magnetic compensation coil structure suitable for opening and closing magnetic shielding room door body Download PDFInfo
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- CN114980714B CN114980714B CN202210554301.3A CN202210554301A CN114980714B CN 114980714 B CN114980714 B CN 114980714B CN 202210554301 A CN202210554301 A CN 202210554301A CN 114980714 B CN114980714 B CN 114980714B
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- 238000004804 winding Methods 0.000 claims abstract description 17
- 230000005389 magnetism Effects 0.000 claims abstract description 3
- 230000000694 effects Effects 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 8
- 229910000889 permalloy Inorganic materials 0.000 description 5
- 238000010618 wire wrap Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0071—Active shielding
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
- H01F5/02—Coils wound on non-magnetic supports, e.g. formers
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0001—Rooms or chambers
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The utility model provides a triaxial magnetism compensation coil structure suitable for opening and shutting of magnetic shielding room door body, including shielding room, the door body, X is to compensation coil, Y is to compensation coil and Z is to compensation coil, the door body is including rotating the switching side that is connected to the shielding room, X is to compensation coil regard X axle as the axis and the front side and the rear side of locating the shielding room in the ring, Y is to compensation coil regard Y axle as the axis and the left side and the right side of locating the shielding room in the ring, Z is to compensation coil regard Z axle as the axis and the upside and the downside of locating the shielding room in the ring, at least one set of Y coil or at least one set of Z coil are equipped with the wiring portion that extends to the door body side from the switching side. According to the scheme, the active magnetic compensation coil is formed by the X-direction compensation coil, the Y-direction compensation coil and the Z-direction compensation coil which encircle the outer side of the shielding chamber, and meanwhile, the arrangement of the winding connection part enables the compensation magnetic field generated after the active magnetic compensation coil is electrified to have the characteristics of high uniformity and large uniform area under the condition that the opening and closing of the door body are not affected, so that the shielding chamber has a good magnetic shielding effect.
Description
Technical Field
The invention relates to the field of magnetic shielding technology, in particular to a triaxial magnetic compensation coil structure suitable for opening and closing a magnetic shielding room door body.
Background
The magnetic shielding room is mainly used for shielding the interference of external magnetic fields, providing a quiet 'zero magnetic' working environment, and has extremely important application value in the fields of national defense aviation, leading-edge science, life science, basic physical research, medical research and the like. The traditional magnetic shielding room mostly adopts permalloy materials with higher magnetic permeability to shield external magnetic fields, and meanwhile, in order to realize better magnetic shielding performance, a multi-layer permalloy nested structural design mode is often adopted. The permalloy has higher price and higher density, so that the traditional shielding room has higher cost and higher weight, and is difficult to popularize and apply in a large range. In order to reduce the cost and lighten the weight of the magnetic shielding room, a magnetic shielding design mode of active and passive combination is adopted at present, namely, a coil is arranged on the outer side of the magnetic shielding room, and the external magnetic field is actively compensated by utilizing a reverse magnetic field generated after the coil is electrified to replace the effect of partial permalloy passive shielding, so that the purposes of reducing the cost and the weight are achieved. In order to ensure that the occupied area of the shielding chamber is as small as possible while the opening and closing of the door body of the shielding chamber are not influenced, the existing active magnetic compensation coil adopts a design mode that the door body is prevented from being opened and surrounded and fixed at the edge position of the magnetic shielding chamber. However, considering the problems of small uniform area and poor uniformity of the magnetic field generated by the active magnetic compensation coil, the residual magnetism in the effective working area in the shielded room after shielding is difficult to meet the application requirements.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a triaxial magnetic compensation coil structure suitable for opening and closing a magnetic shielding room door body, which aims to reduce the cost and weight of the magnetic shielding room while ensuring the performance of the magnetic shielding room.
In order to solve the problems, the invention provides a triaxial magnetic compensation coil structure suitable for opening and closing a door body of a magnetic shielding room, which comprises a shielding room, a door body, an X-direction compensation coil, a Y-direction compensation coil and a Z-direction compensation coil, wherein the door body comprises a switching side rotationally connected to the shielding room, the X-direction compensation coil comprises at least two groups of X-coils, the X-coils are respectively arranged on the front side and the rear side of the shielding room in a surrounding manner by taking an X axis as an axis, the Y-direction compensation coil comprises at least two groups of Y-coils, the Y-coils are respectively arranged on the left side and the right side of the shielding room in a surrounding manner by taking a Y axis as an axis, the Z-direction compensation coil comprises at least two groups of Z-coils, the Z-coils are respectively arranged on the upper side and the lower side of the shielding room in a surrounding manner by taking a Z axis as an axis, and at least one group of Y-coils or at least one group of Z-coils are provided with a winding part extending from the switching side to the side of the door body.
According to the scheme, the first-stage passive magnetic shielding is realized through the arrangement of the shielding chamber, meanwhile, the X-direction compensation coil, the Y-direction compensation coil and the Z-direction compensation coil are arranged on the outer side of the shielding chamber, when the X-direction coil, the Y-direction compensation coil and the Z-direction compensation coil are electrified, a reverse active compensation magnetic field can be generated, namely, the second-stage active magnetic shielding is realized, and further, due to the arrangement of the winding connection part on the Y-direction coil or the Z-direction coil, the active compensation magnetic field has the characteristics of high uniformity and large uniformity area under the condition that the opening and closing of the door body of the magnetic shielding chamber are not influenced, so that the magnetic shielding effect is further improved. Compared with the prior art, the shielding chamber of the scheme has the characteristics of high performance, low cost, light weight and the like, and meets the aim of large-scale popularization and application.
Preferably, the X-direction compensation coils are four groups of X-coils, the Y-direction compensation coils are four groups of Y-coils, the Z-direction compensation coils are four groups of Z-coils, the second and third Y-coils from left to right along the shielding chamber are provided with wire-wrapping portions, and the second and third Z-coils from top to bottom along the shielding chamber are provided with wire-wrapping portions, so that the X-direction compensation coils, the Y-direction compensation coils and the Z-direction compensation coils can generate more uniform active compensation magnetic fields in the shielding chamber, and better magnetic shielding effect is achieved.
Preferably, the switching side of the door body is rotatably connected to the front side of the shielding chamber, and the switching side is positioned on the right side of the door body.
Preferably, the winding part of the second Y coil enters the door body from the upper part of the switching side and sequentially passes through the upper part, the left part and the lower part of the door body and then passes through the lower part of the switching side, the winding part of the third Y coil enters the door body from the upper part of the switching side and sequentially passes through the upper part, the right part and the lower part of the door body and then passes through the door body from the lower part of the switching side, so that the Y coil forms an active compensation magnetic field with a large uniform area and high uniformity in the shielding chamber.
Preferably, the winding part of the second Z coil enters the door body from the middle part of the switching side and sequentially passes through the right part, the upper part, the left part and the middle part of the door body and then penetrates out of the door body from the middle part of the switching side, and the winding part of the third Z coil enters the door body from the middle part of the switching side and sequentially passes through the right part, the lower part, the left part and the middle part of the door body and then penetrates out of the door body from the lower part of the switching side, so that the Z coil forms an active compensation magnetic field with a large uniform area and high uniformity in the shielding chamber.
Preferably, the ratio coefficient of the center distance between the second X coil and the third X coil along the shielding chamber from front to back to the center distance between the first X coil and the fourth X coil is 0.25-0.3, the ratio coefficient of the center distance between the second Y coil and the third Y coil along the shielding chamber from left to right to the center distance between the first Y coil and the fourth Y coil is 0.25-0.3, the ratio coefficient of the center distance between the second Z coil and the third Z coil along the shielding chamber from top to bottom to the center distance between the first Z coil and the fourth Z coil is 0.25-0.3, and the active compensation magnetic field formed inside the shielding chamber is ensured to be more uniform.
Preferably, the number of turns of the second X coil and the third X coil which are from front to back along the shielding chamber are the same and are a, the number of turns of the first X coil and the fourth X coil which are from front to back along the shielding chamber are the same and are b, and the ratio coefficient value of a/b is 2 to 2.5; the turns of the second Y coil and the third Y coil from left to right along the shielding chamber are all c, the turns of the first Y coil and the fourth Y coil from left to right along the shielding chamber are the same and are d, and the ratio coefficient value of c/d is 2-2.5, so that the active compensation magnetic field formed inside the shielding chamber is more uniform.
Preferably, the X coils are symmetrically distributed with respect to the central surface of the shielding chamber in the X direction, the Y coils are symmetrically distributed with respect to the central surface of the shielding chamber in the Y direction, and the Z coils are symmetrically distributed with respect to the central surface of the shielding chamber in the Z direction, so that the uniformity and the uniformity of the active compensation magnetic field generated by the triaxial magnetic compensation coil in the shielding chamber are better.
Drawings
FIG. 1 is a schematic distribution diagram of a three-axis magnetic compensation coil structure suitable for opening and closing a magnetic shielding chamber door;
FIG. 2 is a schematic diagram showing the distribution of X-direction compensation coils of a three-axis magnetic compensation coil structure suitable for opening and closing a magnetic shielding chamber door body;
FIG. 3 is a schematic diagram showing the distribution of Y-direction compensation coils of a three-axis magnetic compensation coil structure suitable for opening and closing a magnetic shielding chamber door body;
fig. 4 is a schematic distribution diagram of a Z-direction compensation coil of a triaxial magnetic compensation coil structure suitable for opening and closing a magnetic shielding chamber door body.
Reference numerals illustrate:
1. a shielding chamber; 2. a door body; 2.1, a transfer side; 3. an X-direction compensation coil; 4. a Y-direction compensation coil; 5. a Z-direction compensation coil; 6. and a winding connection part.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. It should be further noted that, in the embodiments of the present invention, all directional indications (such as up, down, left, right, front, back, inner, and outer) are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is correspondingly changed.
Referring to fig. 1 to 4, fig. 1 is a schematic distribution diagram of a triaxial magnetic compensation coil structure suitable for opening and closing a magnetic shielding chamber door body; FIG. 2 is a schematic diagram showing the distribution of X-direction compensation coils of a three-axis magnetic compensation coil structure suitable for opening and closing a magnetic shielding chamber door body; FIG. 3 is a schematic diagram showing the distribution of Y-direction compensation coils of a three-axis magnetic compensation coil structure suitable for opening and closing a magnetic shielding chamber door body; fig. 4 is a schematic distribution diagram of a Z-direction compensation coil of a triaxial magnetic compensation coil structure suitable for opening and closing a magnetic shielding chamber door body. It should be noted that, since the partial areas of the X-direction compensation coil 3, the Y-direction compensation coil 4, and the Z-direction compensation coil 5 in fig. 1 form overlapping, the specific arrangement of the X-direction compensation coil 3, the Y-direction compensation coil 4, and the Z-direction compensation coil 5 is based on fig. 2, fig. 3, and fig. 4, respectively.
The three-axis magnetic compensation coil structure suitable for opening and closing a door body of a magnetic shielding room provided by the embodiment of the invention comprises a shielding room 1, a door body 2, an X-direction compensation coil 3, a Y-direction compensation coil 4 and a Z-direction compensation coil 5, wherein the door body 2 comprises a switching side 2.1 rotatably connected to the shielding room 1, the X-direction compensation coil 3 comprises at least two groups of X-coils, the X-coils are respectively arranged on the front side and the rear side of the shielding room 1 in a surrounding manner by taking an X axis as an axis, the Y-direction compensation coil 4 comprises at least two groups of Y-coils, the Y-coils are respectively arranged on the left side and the right side of the shielding room 1 in a surrounding manner by taking a Y axis as an axis, the Z-direction compensation coil 5 comprises at least two groups of Z-coils, the Z-coils are respectively arranged on the upper side and the lower side of the shielding room 1 in a surrounding manner by taking a Z axis as an axis, and the at least one group of Y-coils or the at least one group of Z-coils are provided with a winding part 6 extending from the switching side 2.1 to the side of the door body 2.
According to the scheme, the first-stage passive magnetic shielding is realized through the arrangement of the shielding chamber 1, meanwhile, the X-direction compensation coil 3, the Y-direction compensation coil 4 and the Z-direction compensation coil 5 are arranged on the outer side of the shielding chamber 1, and when the X-direction coil, the Y-direction compensation coil and the Z-direction compensation coil are electrified, a reverse active compensation magnetic field can be generated, namely, the second-stage active magnetic shielding is realized, and further, due to the arrangement of the winding connection part 6 on the Y-direction coil or the Z-direction coil, the active compensation magnetic field has the characteristics of high uniformity and large uniform area under the condition that the opening and closing of the magnetic shielding chamber door body 2 are not influenced, so that the magnetic shielding effect is further improved. Compared with the prior art, the shielding room 1 of the scheme has the characteristics of high performance, low cost, light weight and the like, and meets the aim of large-scale popularization and application. In the above scheme, the shielding chamber 1 is made of a material with high magnetic permeability, such as permalloy material, so that a good passive magnetic shielding effect can be formed.
In this embodiment, a working area is disposed in the shielding chamber 1, the working area is connected to the front side of the shielding chamber 1, the switching side 2.1 of the door body 2 is rotatably connected to the front side of the shielding chamber 1, and the switching side 2.1 is located on the right side of the door body 2. The X-direction compensation coil 3 is four groups of X coils, the Y-direction compensation coil 4 is four groups of Y coils, the Z-direction compensation coil 5 is four groups of Z coils, the second and third Y coils from left to right along the shielding chamber 1 are provided with a wire-wrapping part 6, the second and third Z coils from top to bottom along the shielding chamber 1 are provided with wire-wrapping parts 6, so that the X-direction compensation coil 3, the Y-direction compensation coil 4 and the Z-direction compensation coil 5 can generate more uniform and stable active compensation magnetic fields at the outer side of the shielding chamber 1, and better magnetic shielding effect is realized. It should be understood that in other embodiments, the door body 2 may be located on any side of the shielding chamber 1, and the switching side 2.1 may also be any side of the door body 2, so long as the X-direction compensation coil 3, the Y-direction compensation coil 4, and the Z-direction compensation coil 5 are correspondingly adjusted, and the design is not limited. It should be noted that the X-direction compensation coil 3, the Y-direction compensation coil 4 and the Z-direction compensation coil 5 are all located outside the shielding chamber 1 and the door body 2, so that the active compensation magnetic field formed after the X-direction compensation coil 3, the Y-direction compensation coil 4 and the Z-direction compensation coil 5 are energized can cover all areas of the shielding chamber 1.
Further, the winding part 6 of the second Y coil enters the door body 2 from the upper part of the switching side 2.1 and sequentially passes through the upper part, the left part and the lower part of the door body 2 and then passes through the lower part of the switching side 2.1, the winding part 6 of the third Y coil enters the door body 2 from the upper part of the switching side 2.1 and sequentially passes through the upper part, the right part and the lower part of the door body 2 and then passes through the lower part of the switching side 2.1 and then passes through the door body 2, so that the Y-direction compensation coil 4 generates an active compensation magnetic field with larger uniform area and better uniformity in the Y direction inside the shielding chamber 1 under the condition that the opening and closing of the door body 2 of the shielding chamber 1 are not influenced.
Further, the winding part 6 of the second Z coil enters the door body 2 from the middle part of the switching side 2.1 and sequentially passes through the right part, the upper part, the left part and the middle part of the door body 2 and then penetrates out of the door body 2 from the middle part of the switching side 2.1, the winding part 6 of the third Z coil enters the door body 2 from the middle part of the switching side 2.1 and sequentially passes through the right part, the lower part, the left part and the middle part of the door body 2 and then penetrates out of the door body 2 from the lower part of the switching side 2.1, so that the Z-direction compensation coil 5 generates an active compensation magnetic field with larger uniform area and better uniformity in the Z direction inside the shielding chamber 1 under the condition that the opening and closing of the door body 2 of the shielding chamber 1 are not influenced.
Based on fig. 1, the ratio of the center distance of the second and third X coils from front to back along the shielding chamber 1 to the center distance of the first and fourth X coils is 0.25 to 0.3, preferably 0.26 or 0.28 in this embodiment; the ratio of the center distance of the second and third Y coils from left to right along the shielding chamber 1 to the center distance of the first and fourth Y coils is 0.25 to 0.3, preferably 0.26 or 0.28; the ratio of the center distance of the second and third Z coils to the center distance of the first and fourth Z coils along the shielding chamber 1 from top to bottom is 0.25 to 0.3, preferably 0.26 or 0.28; ensuring that the active compensation magnetic field formed inside the shielding chamber 1 is more uniform.
Further, the number of turns of the second X coil and the third X coil from front to back along the shielding chamber 1 are the same and a, the number of turns of the first X coil and the fourth X coil from front to back along the shielding chamber 1 are the same and b, and the ratio coefficient value of a/b is 2-2.5, preferably 2 or 2.5; the number of turns of the second and third Y coils from left to right along the shielding chamber 1 is c, the number of turns of the first and fourth Y coils from left to right along the shielding chamber 1 is the same and d, and the ratio coefficient value of c/d is 2-2.5, preferably 2 or 2.5, so that the active compensation magnetic field formed inside the shielding chamber 1 is ensured to be more uniform.
In this embodiment, the X coils are symmetrically distributed with respect to the central surface of the shielding chamber 1 in the X direction, the Y coils are symmetrically distributed with respect to the central surface of the shielding chamber 1 in the Y direction, and the Z coils are symmetrically distributed with respect to the central surface of the shielding chamber 1 in the Z direction, so that the uniformity and uniformity of the active compensation magnetic field generated inside the shielding chamber 1 are better.
Compared with the prior art, the scheme can generate the active compensation magnetic field with high uniformity and large uniform area in the shielding chamber 1 under the condition that the opening and closing of the door body 2 of the shielding chamber 1 is not influenced by the arrangement of the X-direction compensation coil 3, the Y-direction compensation coil 4 and the Z-direction compensation coil 5 which surround the outer side of the shielding chamber, so that a better magnetic shielding effect is realized, and the shielding chamber finally realizes the effects of high performance, low cost and light weight, thereby solving the targets of large-scale popularization and application.
Although the present disclosure is described above, the scope of protection of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the invention.
Claims (5)
1. Triaxial magnetism compensation coil structure suitable for magnetic shielding room door body opens and shuts, its characterized in that: the X-direction compensation coil (3) comprises at least two groups of X coils, the X coils are respectively arranged on the front side and the rear side of the shielding chamber (1) in a surrounding mode by taking an X axis as an axis, the Y-direction compensation coil (4) comprises at least two groups of Y coils, the Y coils are respectively arranged on the left side and the right side of the shielding chamber (1) in a surrounding mode by taking a Y axis as an axis, the Z-direction compensation coil (5) comprises at least two groups of Z coils, the Z coils are respectively arranged on the upper side and the lower side of the shielding chamber (1) in a surrounding mode by taking a Z axis as an axis, and at least one group of Y coils or at least one group of Z coils are provided with winding parts (6) extending from the switching side (2.1) to the side of the door body (2);
The X-direction compensation coils (3) are four groups of X coils, the Y-direction compensation coils (4) are four groups of Y coils, the Z-direction compensation coils (5) are four groups of Z coils, the second and third Y coils from left to right along the shielding chamber (1) are provided with winding connection parts (6), and the second and third Z coils from top to bottom along the shielding chamber (1) are provided with winding connection parts (6);
The switching side (2.1) of the door body (2) is rotatably connected to the front side of the shielding chamber (1), and the switching side (2.1) is positioned on the right side of the door body (2);
the wire-wound part (6) of the second Y coil enters the door body (2) from the upper part of the switching side (2.1) and sequentially passes through the upper part, the left part and the lower part of the door body (2) and then passes through the lower part of the switching side (2.1) and then passes out of the door body (2), and the wire-wound part (6) of the third Y coil enters the door body (2) from the upper part of the switching side (2.1) and sequentially passes through the upper part, the right part and the lower part of the door body (2) and then passes through the lower part of the switching side (2.1).
2. The triaxial magnetic compensation coil structure suitable for opening and closing a magnetic shielding chamber door body according to claim 1, characterized in that: the wire-wound part (6) of the second Z coil enters the door body (2) from the middle part of the switching side (2.1) and sequentially passes through the right part, the upper part, the left part and the middle part of the door body (2), then penetrates out of the door body (2) from the middle part of the switching side (2.1), and the wire-wound part (6) of the third Z coil enters the door body (2) from the middle part of the switching side (2.1) and sequentially passes through the right part, the lower part, the left part and the middle part of the door body (2) and then penetrates out of the door body (2) from the lower part of the switching side (2.1).
3. The triaxial magnetic compensation coil structure suitable for opening and closing a magnetic shielding chamber door body according to claim 1, characterized in that: the ratio coefficient of the center distance of the second X coil and the third X coil from front to back along the shielding chamber (1) to the center distance of the first X coil and the fourth X coil is 0.25-0.3, the ratio coefficient of the center distance of the second Y coil and the third Y coil from left to right along the shielding chamber (1) to the center distance of the first Y coil and the fourth Y coil is 0.25-0.3, and the ratio coefficient of the center distance of the second Z coil and the third Z coil from top to bottom along the shielding chamber (1) to the center distance of the first Z coil and the fourth Z coil is 0.25-0.3.
4. A triaxial magnetic compensation coil structure suitable for opening and closing a magnetic shielding door body according to claim 1 or 3, characterized in that: the turns of the second X coil and the third X coil which are from front to back along the shielding chamber (1) are the same and are a, the turns of the first X coil and the fourth X coil which are from front to back along the shielding chamber (1) are the same and are b, and the ratio coefficient value of a/b is 2-2.5; the number of turns of the second Y coil and the third Y coil from left to right along the shielding chamber (1) are all c, the number of turns of the first Y coil and the fourth Y coil from left to right along the shielding chamber (1) are the same, the turns of the first Y coil and the fourth Y coil are all d, and the ratio coefficient value of c/d is 2-2.5.
5. The triaxial magnetic compensation coil structure suitable for opening and closing a magnetic shielding chamber door body according to claim 4, characterized in that: the X coils are symmetrically distributed relative to the central surface of the shielding chamber (1) in the X direction, the Y coils are symmetrically distributed relative to the central surface of the shielding chamber (1) in the Y direction, and the Z coils are symmetrically distributed relative to the central surface of the shielding chamber (1) in the Z direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210554301.3A CN114980714B (en) | 2022-05-19 | 2022-05-19 | Triaxial magnetic compensation coil structure suitable for opening and closing magnetic shielding room door body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210554301.3A CN114980714B (en) | 2022-05-19 | 2022-05-19 | Triaxial magnetic compensation coil structure suitable for opening and closing magnetic shielding room door body |
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| CN114980714A CN114980714A (en) | 2022-08-30 |
| CN114980714B true CN114980714B (en) | 2024-05-28 |
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| CN202210554301.3A Active CN114980714B (en) | 2022-05-19 | 2022-05-19 | Triaxial magnetic compensation coil structure suitable for opening and closing magnetic shielding room door body |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110958830A (en) * | 2019-12-27 | 2020-04-03 | 中国船舶重工集团有限公司第七一0研究所 | Combined type environmental interference magnetic field shielding system |
| CN111579859A (en) * | 2020-05-18 | 2020-08-25 | 浙江巨磁智能技术有限公司 | Magnetic balance sensor based on digital compensation technology |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110958830A (en) * | 2019-12-27 | 2020-04-03 | 中国船舶重工集团有限公司第七一0研究所 | Combined type environmental interference magnetic field shielding system |
| CN111579859A (en) * | 2020-05-18 | 2020-08-25 | 浙江巨磁智能技术有限公司 | Magnetic balance sensor based on digital compensation technology |
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