Electromagnetic shielding box for infant incubator in magnetic resonance environment

Abstract

The utility model relates to an electromagnetic shielding box for an infant incubator in a magnetic resonance environment, which comprises a box body and a cover plate, the box body comprises a first panel, a second panel, a third panel and a fourth panel, the box body is divided into a first cavity, a second cavity and a third cavity through a first baffle plate and a second baffle plate, and a main control board, an optical fiber module and a filter are respectively fixed in the first cavity, the second cavity and the third cavity. The electromagnetic shielding box for the infant incubator in the magnetic resonance environment can solve the problems that in the prior art, all input and output cables in an electromagnetic shielding shell are not subjected to filtering shielding, internal electromagnetic interference leaks to the outside along with the internally connected cables, and the electromagnetic shielding box cannot be used for shielding all the input and output cables in the electromagnetic shielding shell. Or external electromagnetic interference enters the interior of the electromagnetic shielding cover along with the cable and causes interference to the main control unit, so that the problems of poor shielding effect of the electromagnetic shielding box, low working stability of the infant incubator and poor imaging quality of a magnetic resonance system are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, and particularly relates to an electromagnetic shielding box for an incubator in a magnetic resonance environment. Background Art

[0002] Magnetic resonance imaging systems are widely used in the fields of clinical medical diagnosis and basic life science research. Magnetic resonance imaging can provide non-radiative imaging examinations and is suitable for radiation-sensitive populations such as pregnant women and children. Secondly, magnetic resonance imaging has the characteristics of multi-parameter imaging, can generate contrasts and images according to tissue characteristics, is more sensitive to detecting lesions and differentiating the nature of lesions, and is convenient for physicians to make diagnoses. An incubator (or baby incubator, warming box) provides a safe, warm, and controlled environment for newborns and is usually used for premature infants, low birth weight infants, or other newborns in need of special care.

[0003] The high magnetic field intensity and radio frequency coil transmitting and receiving devices of the magnetic resonance system in the incubator can cause strong interference to external electronic components. At the same time, external components connected to the incubator may also interfere with the operation of the magnetic resonance. In the prior art, a non-magnetic conductive housing is generally used to fully shield the main control unit to ensure that electromagnetic signals do not leak to the outside. However, all input and output cables in the electromagnetic shielding housing are not filtered and shielded, and internal electromagnetic interference will leak to the outside along the internally connected cables, or external electromagnetic interference will enter the electromagnetic shielding cover along the cables, and at the same time cause interference to the main control unit, resulting in poor shielding effect of the electromagnetic shielding box, low working stability of the incubator, and poor imaging quality of the magnetic resonance system.

[0004] Therefore, the prior art has defects and needs to be improved and developed. Summary of the Invention

[0005] An embodiment of the utility model provides an electromagnetic shielding box for an incubator in a magnetic resonance environment, which is used to solve the problem that in the prior art, a non-magnetic conductive housing is generally used to fully shield the main control unit to ensure that electromagnetic signals do not leak to the outside. However, all input and output cables in the electromagnetic shielding housing are not filtered and shielded, and internal electromagnetic interference will leak to the outside along the internally connected cables, or external electromagnetic interference will enter the electromagnetic shielding cover along the cables, and at the same time cause interference to the main control unit, resulting in poor shielding effect of the electromagnetic shielding box, low working stability of the incubator, and poor imaging quality of the magnetic resonance system.

[0006] An embodiment of the present utility model provides an electromagnetic shielding box for an incubator in a magnetic resonance environment, which includes an integrally formed box body and a cover plate for sealing the box body. The box body is rectangular and includes a bottom plate located on the rectangular bottom surface. The box body further includes a first panel, a second panel, a third panel, and a fourth panel that are perpendicular to the bottom plate and sequentially enclose. A first baffle is vertically fixed between the first panel and the third panel. The space between the first baffle and the fourth panel is defined as a first cavity, and the first cavity is used to provide an installation space for the main control board of the incubator. A first screw hole is opened on the bottom plate, and the first screw hole is used to fix the main control board; a power supply port and an external debugging port that penetrate the first cavity are opened on the fourth panel. Quick connectors are fixed at one end of the power supply port and the external debugging port outside the box body, and one end of the power supply port and the external debugging port inside the box body is electrically connected to the main control board; a second baffle is vertically fixed between the first baffle and the second panel. The space between the second baffle and the first panel is defined as a second cavity, and the second cavity is used to provide an installation space for the optical fiber module. Second screw holes are opened on the bottom plate and the second panel, and the second screw holes are used to fix the optical fiber module; a first notch and a second notch are opened at the top of the first baffle in the second cavity. When the cover plate is buckled on the box body, the first notch and the second notch are respectively used to fix the sensor cable and the conductive cable of the optical fiber module, and the sensor cable and the conductive cable are electrically connected to the main control board; at least three third notches with different sizes are opened at the top of the second panel in the second cavity. When the cover plate is buckled on the box body, the third notches are used to fix the optical fiber cable of the optical fiber module; a grounding port that penetrates the second cavity is opened at the bottom of the second panel in the second cavity. A quick connector is fixed at one end of the grounding port outside the box body; the space between the second baffle and the third panel is defined as a third cavity, and the third cavity is used to provide an installation space for the filter, and there is at least one filter; third screw holes are opened on the bottom plate and the second panel, and the third screw holes are used to fix the filter; a functional cable connector port that penetrates the third cavity is opened on the second panel in the third cavity. A quick connector is fixed at one end of the functional cable connector port outside the box body, and one end of the functional cable connector port inside the box body is connected to the input port of the filter; when the filter is fixed in the third cavity, the height of the first baffle in the third cavity is not higher than the output port of the filter, and the output port of the filter is electrically connected to the main control board.

[0007] Further, both ends of the first baffle have first bending portions perpendicular to the plate surface of the first baffle. Fourth screw holes are provided on the first bending portions. Fourth screw holes are also provided on the first panel and the third panel corresponding to the positions of the first bending portions. The first baffle is fixed between the first panel and the third panel by screws passing through the fourth screw holes.

[0008] Further, a metal shielding net is filled between the first bending portion close to the first panel and the first panel, and a metal shielding net is filled between the first bending portion close to the third panel and the third panel.

[0009] Further, both ends of the second baffle have second bending portions perpendicular to the plate surface of the second baffle. Fifth screw holes are provided on the second bending portions. Fifth screw holes are also provided on the second panel and the first baffle corresponding to the positions of the second bending portions. The second baffle is fixed between the second panel and the first baffle by screws passing through the fifth screw holes.

[0010] Further, a metal shielding net is filled between the second bending portion close to the second panel and the second panel, and a metal shielding net is filled between the second bending portion close to the first baffle and the second baffle.

[0011] Further, at least one third bending portion perpendicular to the plate surface of the cover plate is provided on the four sides of the cover plate. Sixth screw holes are provided on the third bending portions. Sixth screw holes are also provided on the first panel, the second panel, the third panel and the fourth panel corresponding to the positions of the third bending portions. The cover plate seals the box body by screws passing through the sixth screw holes.

[0012] Further, the quick connector is a metal type quick connector.

[0013] Further, the box body is a non-magnetic and highly conductive box body.

[0014] Further, the cover plate is a non-magnetic and highly conductive cover plate.

[0015] Further, the filter is at least one of a low-pass filter, a band-pass filter, and a band group filter.

[0016] Beneficial effects:

[0017] As can be seen from the above technical solutions, the present utility model provides an electromagnetic shielding box for an incubator in a magnetic resonance environment. The box body is divided into three cavities by a first baffle and a second baffle, ensuring that components with different working natures do not affect each other, reducing near-field coupling and common-mode interference. By adding a filter, the filter realizes filtering, thereby improving the shielding effect of the electromagnetic shielding box and the working stability of the incubator, and making the imaging quality of the magnetic resonance system good.

[0018] It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be regarded as part of the inventive subject matter of the present disclosure as long as such concepts do not contradict each other.

[0019] The foregoing and other aspects, embodiments, and features of the teachings of the present invention can be more fully understood from the following description in conjunction with the accompanying drawings. Other additional aspects of the present invention, such as the features and / or beneficial effects of exemplary embodiments, will be apparent in the following description or will be learned through practice of the specific embodiments according to the teachings of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings are not drawn to scale in accordance with real reference objects. In the drawings, each identical or approximately identical component shown in each figure can be denoted by the same reference numeral. For the sake of clarity, not every component is labeled in each figure. Now, embodiments of various aspects of the present invention will be described by way of example and with reference to the drawings, wherein:

[0021] Figure 1 It is an overall structure diagram of an electromagnetic shielding box for an incubator in a magnetic resonance environment in an embodiment of the present application.

[0022] Figure 2 It is a structure diagram of an electromagnetic shielding box for an incubator in a magnetic resonance environment in an embodiment of the present application after removing the cover plate.

[0023] Figure 3 It is a structure diagram of an electromagnetic shielding box for an incubator in a magnetic resonance environment in an embodiment of the present application after removing the cover plate and the filter.

[0024] Figure 4 It is a structure diagram of the cover plate of an electromagnetic shielding box for an incubator in a magnetic resonance environment in an embodiment of the present application.

[0025] Description of the reference numerals in the drawings:

[0026] Cover plate 1; bottom plate 2; first panel 3; second panel 4; third notch 401; grounding port 402; functional cable connector port 403; third panel 5; fourth panel 6; power supply port 601; external debugging port 602; first baffle 7; first notch 701; second notch 702; second baffle 8; filter 9; first screw hole 10; second screw hole 11; third screw hole 12; fourth screw hole 13; fifth screw hole 14; sixth screw hole 15. Detailed implementation mode

[0027] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein shall have the ordinary meanings understood by those of ordinary skill in the art to which the present invention pertains.

[0028] The "first", "second" and similar terms used in the specification and claims of this patent application for invention do not denote any order, quantity or importance, but are only used to distinguish different components. Similarly, unless the context clearly indicates otherwise, the singular forms "a",

[0029] "one" or "the" and similar terms do not denote a limitation of quantity either, but mean that there is at least one.

[0030] The terms "comprising" or "including" and similar terms mean that the elements or items appearing before "comprising" or "including" cover the features, wholes, steps, operations, elements and / or components listed after "comprising" or "including", and do not exclude the existence or addition of one or more other features, wholes, steps, operations, elements, components and / or their combinations. The terms "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0031] The high magnetic field intensity and the RF coil transmitting and receiving device of the magnetic resonance system inside the incubator can cause strong interference to external electronic components. At the same time, the external components connected to the incubator may also interfere with the operation of the magnetic resonance. In the prior art, a non-magnetic conductive housing is generally used to fully shield the main control unit to ensure that electromagnetic signals do not leak out. However, all the input and output cables inside the electromagnetic shielding housing are not filtered and shielded, and the internal electromagnetic interference will leak to the outside along the internal connected cables, or the external electromagnetic interference will enter the inside of the electromagnetic shielding cover along the cables, interfering with the main control unit at the same time, resulting in poor shielding effect of the electromagnetic shielding box, low working stability of the incubator, and poor imaging quality of the magnetic resonance system.

[0032] In view of this, an embodiment of the present utility model provides an electromagnetic shielding box for an incubator in a magnetic resonance environment. Referring to Figures 1 to 4 , it includes an integrally formed box body and a cover plate 1 for closing the box body. The box body is rectangular and includes a bottom plate 2 located on the rectangular bottom surface. The box body also includes a first panel 3, a second panel 4, a third panel 5, and a fourth panel 6 that are perpendicular to the bottom plate 2 and enclose each other in sequence.

[0033] A first baffle 7 is vertically fixed between the first panel 3 and the third panel 5. The space between the first baffle 7 and the fourth panel 6 is defined as the first cavity, and the first cavity is used to provide an installation space for the main control board of the incubator. A first screw hole 10 is opened on the bottom plate 2, and the first screw hole 10 is used to fix the main control board; a power supply port 601 and an external debugging port 602 that penetrate the first cavity are opened on the fourth panel 6. Quick connectors are fixed at one ends of the power supply port 601 and the external debugging port 602 outside the box body, and one ends of the power supply port 601 and the external debugging port 602 inside the box body are electrically connected to the main control board.

[0034] The main control board is in a separate area and the main control board can be designed with press riveting studs for threaded connection with the first screw hole 10. Through the fixation and grounding of the press riveting studs, the main control board in the separate area helps to reduce electromagnetic interference, reduce the signal loop impedance, and reduce the ground potential difference, thereby improving the stability and anti-interference ability of the control main board; at the same time, according to the overall layout of the main control board, the first screw holes 10 with different positions and different numbers can be designed, so as to provide more stable mechanical support and prevent the main control board from being bent or damaged under the influence of external forces during installation and use.

[0035] A second baffle 8 is vertically fixed between the first baffle 7 and the second panel 4. The space between the second baffle and the first panel 3 is defined as the second cavity, and the second cavity is used to provide an installation space for the optical fiber module. Second screw holes 11 are provided on the bottom plate 2 and the second panel 4, and the second screw holes 11 are used to fix the optical fiber module; at the top of the first baffle 7 in the second cavity, a first notch 701 and a second notch 702 are provided. When the cover plate 1 is buckled on the box body, the first notch 701 and the second notch 702 are respectively used to fix the sensor cable and the conductive cable of the optical fiber module, and the sensor cable and the conductive cable are electrically connected to the main control board; at the top of the second panel 4 in the second cavity, at least 3 third notches 401 of different sizes are provided. When the cover plate 1 is buckled on the box body, the third notches 401 are used to fix the optical fiber cable of the optical fiber module; at the bottom of the second panel 4 in the second cavity, a grounding port 402 penetrating the second cavity is provided, and a quick connector is fixed at one end of the grounding port 402 outside the box body.

[0036] A first notch 701 and a second notch 702 are designed between the main control board and the optical fiber module area. The first notch 701 and the second notch 702 are U-shaped grooves, which are respectively used for fixing the cable of the optical fiber sensor and the power supply cable of the optical fiber module. Similarly, at least 3 third notches 401 of different sizes are provided at the top of the second panel 4 in the second cavity. The third notches 401 are also U-shaped grooves, which are convenient for the installation and replacement of the optical fiber cable and the later maintenance and replacement. The U-shaped groove can be adjusted according to the thickness of the optical fiber cable.

[0037] The space between the second baffle 8 and the third panel 5 is defined as the third cavity, and the third cavity is used to provide an installation space for the filter 9. Refer to Figure 2 , there is at least 1 filter 9; third screw holes 12 are provided on the bottom plate 2 and the second panel 4, and the third screw holes 12 are used to fix the filter 9; on the second panel 4 in the third cavity, a functional cable connector port 403 penetrating the third cavity is provided, and a quick connector is fixed at one end of the functional cable connector port 403 outside the box body. One end of the functional cable connector port 403 inside the box body is connected to the input port of the filter 9; when the filter 9 is fixed in the third cavity, the height of the first baffle in the third cavity is not higher than the output port of the filter 9, and the output port of the filter 9 is electrically connected to the main control board.

[0038] The interfaces on the second panel 4 are the interfaces for the main control board to work externally. The electrical cables work externally through quick-connect joints. The interfaces for the main control board to work externally are all fixed on the second panel 4, which facilitates good contact between the shielding layers of each output cable and the grounding port 402, reduces impedance differences, and prevents common-mode currents caused by voltage differences between the shielding layers, thereby inducing voltages and currents in adjacent cables, resulting in signal noise and interference as well as electromagnetic radiation. Due to working in a magnetic resonance environment, fiber optic sensors need to be used. The fiber optic sensors are made of passive glass materials, and channels need to be reserved for the external output of the fiber optic sensors. Therefore, the first notch 701 is designed.

[0039] A power supply port 601 and an external debugging port 602 are opened on the fourth panel 6. Similar to the front panel, the electrical cables work externally through quick-connect joints. Since the box body is integrally formed and made of non-magnetic and highly conductive metal by bending and welding, it can effectively ensure that all shielding layers of the electromagnetic shielding box are connected to the entire box body through metal quick-connect joints, with a small impedance value, improving the electromagnetic anti-interference ability. In some other embodiments, the entire box body is integrally bent from non-magnetic and highly conductive metal materials, and metal welding technology is used at the bending joints to ensure that electromagnetic radiation does not leak through the gaps.

[0040] The interior of the box body is divided into three regions according to functions, namely the first cavity, the second cavity, and the third cavity. The first cavity is the main control unit region, the second cavity is the fiber optic module region, and the third cavity is the filter 9 component region. Conventional electromagnetic shielding boxes place all electrical units that need to be shielded in a single shielding shell. In fact, inside the electromagnetic shielding box, the working functions of each component are different, and the electromagnetic radiation intensities between them are different. Placing them together easily causes near-field coupling and common-mode interference. Specifically, it is manifested as an increase in the electromagnetic field intensity, that is, when multiple electromagnetic radiation devices are closely stacked together, the electromagnetic field intensities between the devices will be superimposed on each other, resulting in an increase in the electromagnetic field intensity in a local area; it is manifested as intermodulation interference, that is, electromagnetic waves of different frequencies may be coupled to each other between the devices, generating intermodulation interference, which is usually difficult to predict and control; it is manifested as radiation cross-coupling, that is, closely stacked devices will cause the radiation signals of each other to directly affect adjacent devices through near-field coupling, increasing signal distortion and noise. In the embodiments of the present invention, functional division is carried out according to the functions and electromagnetic radiation capabilities of the devices, which can reduce interference with each other, reduce near-field coupling, and reduce radiation cross-influence and common-mode interference.

[0041] In some embodiments, refer to Figure 3, both ends of the first baffle 7 have first bending portions perpendicular to the plate surface of the first baffle 7. Fourth screw holes 13 are provided on the first bending portions. Fourth screw holes 13 are also provided on the first panel 3 and the third panel 5 corresponding to the positions of the first bending portions. The first baffle 7 is fixed between the first panel 3 and the third panel 5 by screws passing through the fourth screw holes 13.

[0042] In some embodiments, a metal shielding net is filled between the first bending portion close to the first panel 3 and the first panel 3, and a metal shielding net is filled between the first bending portion close to the third panel 5 and the third panel 5.

[0043] In some embodiments, referring to Figure 3 , both ends of the second baffle have second bending portions perpendicular to the plate surface of the second baffle. Fifth screw holes 14 are provided on the second bending portions. Fifth screw holes 14 are also provided on the second panel 4 and the first baffle corresponding to the positions of the second bending portions. The second baffle is fixed between the second panel 4 and the first baffle 7 by screws passing through the fifth screw holes 14.

[0044] In some embodiments, a metal shielding net is filled between the second bending portion close to the second panel 4 and the second panel 4, and a metal shielding net is filled between the second bending portion close to the first baffle and the second baffle 8.

[0045] In some embodiments, referring to Figure 4 , at least one third bending portion perpendicular to the plate surface of the cover plate 1 is provided on the four sides of the cover plate 1. Sixth screw holes 15 are provided on the third bending portions. Sixth screw holes 15 are also provided on the first panel 3, the second panel 4, the third panel 5 and the fourth panel 6 corresponding to the positions of the third bending portions. The cover plate 1 seals the box body by screws passing through the sixth screw holes 15.

[0046] Through the screw fixing process using the first bending portion, the second bending portion and the third bending portion, the tightness of the connection is ensured, and electromagnetic radiation is prevented from leaking to other areas through the gaps. The filled metal shielding net cannot ensure the tightness of the fixation and prevent electromagnetic leakage.

[0047] In some embodiments, the quick connector is a metal type quick connector.

[0048] In some embodiments, the box body is a non-magnetic and highly conductive box body.

[0049] In some embodiments, the cover plate 1 is a non-magnetic and highly conductive cover plate 1.

[0050] In some embodiments, the filter 9 is at least one of a low-pass filter, a band-pass filter, and a band group filter.

[0051] Due to the working characteristics of magnetic resonance and its sensitivity to electromagnetic signals, it is necessary to filter electrical signals to remove noise and unnecessary frequency components in the signal and ensure high-quality imaging effects. Therefore, the electromagnetic shielding box provided by the embodiments of the present utility model is different from conventional electromagnetic shielding boxes. In addition to considering the electromagnetic shielding performance of the main control electronic unit including the main control board, a filter 9 is also designed inside the electromagnetic shielding box. The filter 9 can directly select various filters 9 in the prior art. The types of the filters 9 can be different or the same, thereby forming a filter component. The design of the filter component is relatively flexible, and different filters 9 can be selected according to the electromagnetic characteristics of each component. When different types of filters 9 or filters 9 used to achieve different functions are installed in the third cavity, each filter 9 has an independent housing, which also prevents the working devices with different electromagnetic parameters from interfering with each other. All working cables are connected to the working devices of the external incubator after passing through the filter 9 to achieve filtering. In addition, when multiple filters 9 are selected to achieve a multi-module design, each filter 9 is independently installed to ensure that there is no mutual crosstalk between each filter 9, reduce the conducted radiation of the internal main board to the outside through the input and output cables, and at the same time facilitate later maintenance and upgrading.

[0052] In summary, for the electromagnetic shielding box for an incubator in a magnetic resonance environment provided by the present utility model, by selecting non-magnetic and highly conductive materials for the box body, the cover plate 1, the first baffle 7, and the second baffle 8, a non-magnetized design is achieved, and the electromagnetic shielding box can be applied in a magnetic resonance environment. The box body is divided into three cavities by the first baffle 7 and the second baffle 8 to ensure that components with different working natures do not affect each other, reduce near-field coupling and common-mode interference, and reduce the problems of electromagnetic wave radiation and electromagnetic field radiation generated by the operation of the components on the main control board, so as to reduce the influence of these radiations on magnetic resonance imaging and improve the signal-to-noise ratio of the image. By adding the filter 9 and selecting the filter 9 according to different signal characteristics, the electromagnetic compatibility is improved, and it is convenient for later maintenance and upgrading. When the filter 9 realizes filtering, it can reduce the influence of electromagnetic radiation on the magnetic resonance system and also improve the signal-to-noise ratio of the image, thereby realizing the improvement of the shielding effect of the electromagnetic shielding box and the working stability of the incubator, and enabling the magnetic resonance system to have good imaging quality. By fixing the main control board with screws passing through the first screw holes 10, the interference to the electronic components on the main control board in a magnetic resonance environment can be effectively reduced.

[0053] Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Those with ordinary knowledge in the technical field to which the present invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to what is defined by the claims.

Claims

1. An electromagnetic shielding box for an incubator in a magnetic resonance environment, comprising an integrally formed box body and a cover plate for sealing the box body, wherein the box body is rectangular and comprises a bottom plate located on the bottom surface of the rectangle, and the box body further comprises a first panel, a second panel, a third panel and a fourth panel which are perpendicular to the bottom plate and enclosed in sequence, characterized in that: A first baffle is vertically fixed between the first panel and the third panel, and the space between the first baffle and the fourth panel is defined as a first cavity, the first cavity is used to provide an installation space for the main control board of the incubator, and a first screw hole is provided on the bottom plate, and the first screw hole is used to fix the main control board; a power supply port and an external debugging port that pass through the first cavity are provided on the fourth panel, and a quick-connect connector is fixed at one end of the power supply port and the external debugging port located outside the box, and one end of the power supply port and the external debugging port located inside the box is electrically connected to the main control board; A second baffle is vertically fixed between the first baffle and the second panel, and the space between the second baffle and the first panel is defined as a second cavity, and the second cavity is used to provide an installation space for the optical fiber module, and second screw holes are provided on the bottom plate and the second panel, and the second screw holes are used to fix the optical fiber module; a first notch and a second notch are provided on the top of the first baffle in the second cavity, and when the cover plate is buckled on the box body, the first notch and the second notch are respectively used to fix the sensor cable and the conductive cable of the optical fiber module, and the sensor cable and the conductive cable are electrically connected to the main control board; at least three third notches of different sizes are provided on the top of the second panel in the second cavity, and when the cover plate is buckled on the box body, the third notch is used to fix the optical fiber cable of the optical fiber module; a grounding port that runs through the second cavity is provided at the bottom of the second panel in the second cavity, and a quick-plug connector is fixed at one end of the grounding port located outside the box body; The space between the second baffle and the third panel is defined as a third cavity, and the third cavity is used to provide an installation space for the filter, and there is at least one filter; third screw holes are provided on the bottom plate and the second panel, and the third screw holes are used to fix the filter; a functional cable connector port that passes through the third cavity is provided on the second panel in the third cavity, and a quick-connect connector is fixed to the end of the functional cable connector port located outside the box, and the end of the functional cable connector port located inside the box is connected to the input port of the filter; when the filter is fixed in the third cavity, the height of the first baffle in the third cavity is not higher than the output port of the filter, and the output port of the filter is electrically connected to the main control board.

2. The electromagnetic shielding box for an incubator in a magnetic resonance environment according to claim 1, characterized in that: Both ends of the first baffle have a first bending portion perpendicular to the plate surface of the first baffle, a fourth screw hole is provided on the first bending portion, and fourth screw holes are also provided at positions of the first panel and the third panel corresponding to the first bending portion, and the first baffle is fixed between the first panel and the third panel by screws passing through the fourth screw holes.

3. The electromagnetic shielding box for an incubator in a magnetic resonance environment according to claim 2, characterized in that: A metal shielding mesh is filled between the first bending portion close to the first panel and the first panel, and a metal shielding mesh is filled between the first bending portion close to the third panel and the third panel.

4. The electromagnetic shielding box for an incubator in a magnetic resonance environment according to claim 1, characterized in that: Both ends of the second baffle plate have a second bending portion perpendicular to the plate surface of the second baffle plate, a fifth screw hole is provided on the second bending portion, and a fifth screw hole is also provided at the position of the second panel and the first baffle plate corresponding to the second bending portion, and the second baffle plate is fixed between the second panel and the first baffle plate by screws passing through the fifth screw holes.

5. The electromagnetic shielding box for an incubator in a magnetic resonance environment according to claim 4, characterized in that: A metal shielding mesh is filled between the second bending portion close to the second panel and the second panel, and a metal shielding mesh is filled between the second bending portion close to the first baffle and the second baffle.

6. The electromagnetic shielding box for an incubator in a magnetic resonance environment according to claim 1, characterized in that: The four sides of the cover plate have at least one third bending portion perpendicular to the plate surface of the cover plate, and the third bending portion is provided with a sixth screw hole. The first panel, the second panel, the third panel and the fourth panel are also provided with a sixth screw hole at a position corresponding to the third bending portion, and the cover plate is screwed through the sixth screw hole to seal the box body.

7. The electromagnetic shielding box for an incubator in a magnetic resonance environment according to claim 6, characterized in that: The quick-plug connector is a metal quick-plug connector.

8. The electromagnetic shielding box for an incubator in a magnetic resonance environment according to claim 7, characterized in that: The box body is a non-magnetic and highly conductive box body.

9. The electromagnetic shielding box for an incubator in a magnetic resonance environment according to claim 8, characterized in that: The cover plate is a non-magnetic and highly conductive cover plate.

10. The electromagnetic shielding box for an incubator in a magnetic resonance environment according to claim 9, characterized in that: The filter is at least one of a low-pass filter, a band-pass filter, and a band group filter.

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