CN109922647A - It is electromagnetically shielded protective shell, probe assembly and detector - Google Patents
It is electromagnetically shielded protective shell, probe assembly and detector Download PDFInfo
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- CN109922647A CN109922647A CN201910238173.XA CN201910238173A CN109922647A CN 109922647 A CN109922647 A CN 109922647A CN 201910238173 A CN201910238173 A CN 201910238173A CN 109922647 A CN109922647 A CN 109922647A
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- 239000013078 crystal Substances 0.000 claims description 24
- 238000001816 cooling Methods 0.000 claims description 16
- 230000008878 coupling Effects 0.000 claims description 10
- 238000010168 coupling process Methods 0.000 claims description 10
- 238000005859 coupling reaction Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
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- 239000004917 carbon fiber Substances 0.000 claims description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
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- 230000008676 import Effects 0.000 claims description 3
- 230000005389 magnetism Effects 0.000 claims 1
- 238000002600 positron emission tomography Methods 0.000 description 16
- 238000010586 diagram Methods 0.000 description 15
- 238000002595 magnetic resonance imaging Methods 0.000 description 15
- 230000000712 assembly Effects 0.000 description 6
- 238000000429 assembly Methods 0.000 description 6
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- 230000005611 electricity Effects 0.000 description 4
- 239000000696 magnetic material Substances 0.000 description 4
- 238000003384 imaging method Methods 0.000 description 3
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- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
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- 210000003484 anatomy Anatomy 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
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- 238000002591 computed tomography Methods 0.000 description 1
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- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005288 electromagnetic effect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
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- 229910052751 metal Inorganic materials 0.000 description 1
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Abstract
The embodiment of the invention discloses a kind of electromagnetic shielding protective shell, probe assembly and detectors.Wherein, electromagnetic shielding protective shell includes: support unit, and support unit is provided with the first opening, and the first opening is the entrance for being entered the first receiving space of support unit by screen unit；Closed cell, closed cell are provided with the second opening, and the second opening is the entrance for the second accommodation space that support unit enters closed cell, and the second opening is arranged in a staggered manner with the first opening；Support unit is connect with closed cell pull, and the area of the first opening of closed cell covering is with closed cell relative to support unit moving and change along pull direction.Electromagnetic shielding performance can be improved in technical solution provided in an embodiment of the present invention, guarantees that electronic equipment neither interferes other equipment, while also not influenced by other equipment.
Description
Technical field
The present invention relates to electromangnetic spectrum field more particularly to a kind of electromagnetic shielding protective shells, probe assembly and detection
Device.
Background technique
Electromagnetic wave is the major way that electromagnetic energy is propagated.When high-frequency circuit works, the outside radiated electromagnetic wave of meeting, to neighbouring
Other electronic equipments generate interference.The various electromagnetic waves in space can also sense in circuit, interfere to circuit.For example,
PET/MR all-in-one machine be by positron emission tomography and magnetic resonance imaging system organic assembling in the same rack
Instrument, realize the accuracy registration on the room and time of different images mode and fusion.The application of this imaging technique
Molecular function imaging and fine anatomical structure synchronous acquisition are realized, multi-modal molecular image information is capable of providing, in clinic
Using and scientific research field all have important value.But in PET/MR system, the electromagnetic compatibility of PET and MR are whole systems
One of most important difficult point, the detector of positron emission tomography are easy the electromagnetic signal by magnetic resonance imaging system
Influence so that the image quality of positron emission tomography reduces.Therefore it needs to be arranged electromagnetic shielding safeguard measure and comes
Cut off electromagnetic wave propagation approach, to eliminate electromagnetic interference so that electronic equipment neither interferes other equipment, at the same also not by
The influence of other equipment.
Summary of the invention
The embodiment of the present invention provides a kind of electromagnetic shielding protective shell, probe assembly and detector, to improve electromagnetic wave shielding
Can, guarantee that electronic equipment neither interferes other equipment, while also not influenced by other equipment.
In a first aspect, the embodiment of the invention provides a kind of electromagnetic shielding protective shells, comprising:
Support unit, support unit are provided with the first opening, and the first opening is enters the of support unit by screen unit
The entrance of one accommodation space；
Closed cell, closed cell are provided with the second opening, and the second opening is that support unit enters the second of closed cell
The entrance of accommodation space, the second opening are arranged in a staggered manner with the first opening；
Support unit is connect with closed cell pull, closed cell covering first opening area with closed cell relative to
Support unit moves and changes along pull direction.
Further, closed cell includes enclosure portion and pull coupling part, the face of the first opening of enclosure portion covering
For product with closed cell relative to support unit moving and change along pull direction, pull coupling part covers the position of support unit
In the side opposite with the first opening of the opposite two sides and support unit of the first opening.
Further, support unit and closed cell are in cuboid.
Further, the material of support unit and closed cell includes following at least one: copper and carbon fiber.
Further, closed cell is close to the fringe region and support unit of the second opening for covering the second opening
The fringe region of part be provided with soft magnetic materials.
Second aspect, the embodiment of the invention also provides a kind of probe assemblies, comprising: probe unit and the present invention are any real
The electromagnetic shielding protective shell of example offer is applied, probe unit is by screen unit.
Further, probe unit includes crystal structure and two positioning end blocks, and two positioning end blocks are set to crystal knot
The both ends of structure.
Further, probe unit further includes cooling layer and two printed circuit boards, and crystal structure and printed circuit board are electric
Connection, crystal structure, printed circuit board and cooling layer stacked arrangement；
Cooling layer is located between two printed circuit boards, and crystal structure is located at side of the printed circuit board far from cooling layer；
Printed circuit board is for receiving and processing the photon signal that crystal structure detects；
Support unit and/or closed cell are provided with aperture, and the pipeline of the entrance and exit setting of cooling layer passes through aperture
It is connected to respectively with the export and import of cycle power device.
The third aspect, the embodiment of the invention also provides a kind of detectors, including multiple any embodiment of that present invention to provide
Probe assembly.
It further, further include ring support, on a toroidal support, multiple probe assemblies are along ring for multiple probe assembly settings
The circumferencial direction of shape bracket is arranged successively.
The technical solution of the embodiment of the present invention is connected by setting pull with closed cell for support unit, the second opening
It is arranged in a staggered manner with the first opening, the area of the first opening of closed cell covering is with closed cell relative to support unit along pull side
To movement and change, support unit and closed cell assemble the enclosure space for the electromagnetic shielding to be formed, and seam crossing is tightly bonded,
Seam crossing overlapping area is larger, and the gap of generation is smaller, can reduce electromagnetic leakage, improves the efficiency of electromagnetic shielding, can solve
It is opposite in upper and lower two parts housing when certainly the opposite housing of two parts up and down being connected by screw to form electromagnetic shielding protective shell
The position of contact can generate very long rectilinear slot, the problem of causing electromagnetic leakage, influence shield effectiveness, and drawing and pulling type structure
Electromagnetic shielding protective shell it is easy to assembly.
Detailed description of the invention
Fig. 1 is a kind of explosive view for being electromagnetically shielded protective shell provided in an embodiment of the present invention；
Fig. 2 is a kind of structural representation of electromagnetic shielding protective shell in draw process provided in an embodiment of the present invention
Figure；
Fig. 3 is a kind of top view for being electromagnetically shielded protective shell direction BB ' along Fig. 2 provided in an embodiment of the present invention；
Fig. 4 is a kind of structural representation of electromagnetic shielding protective shell in completely enclosed state provided in an embodiment of the present invention
Figure；
Fig. 5 is the structural schematic diagram of another electromagnetic shielding protective shell provided in an embodiment of the present invention；
Fig. 6 is the explosive view of another electromagnetic shielding protective shell provided in an embodiment of the present invention；
Fig. 7 is the structural schematic diagram that a kind of probe unit provided in an embodiment of the present invention is put into support unit；
Fig. 8 is a kind of structural schematic diagram of probe assembly provided in an embodiment of the present invention；
Fig. 9 is a kind of explosive view of probe assembly provided in an embodiment of the present invention；
Figure 10 is the structural schematic diagram of another electromagnetic shielding protective shell provided in an embodiment of the present invention；
Figure 11 is a kind of structural schematic diagram of detector provided in an embodiment of the present invention；
Figure 12 is the structural schematic diagram of another detector provided in an embodiment of the present invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
The embodiment of the present invention provides a kind of electromagnetic shielding protective shell.Fig. 1 is a kind of electromagnetic screen provided in an embodiment of the present invention
Cover the explosive view of protective shell.Fig. 2 is a kind of electromagnetic shielding protective shell in draw process provided in an embodiment of the present invention
Structural schematic diagram.Fig. 3 is a kind of top view for being electromagnetically shielded protective shell direction BB ' along Fig. 2 provided in an embodiment of the present invention.Figure
4 for it is provided in an embodiment of the present invention it is a kind of in completely enclosed state when electromagnetic shielding protective shell structural schematic diagram.In conjunction with
Shown in Fig. 1 to Fig. 4, which includes: support unit 110 and closed cell 120.
Wherein, support unit 110 is provided with the first opening 111, and the first opening 111 is to enter support unit by screen unit
The entrance of 110 first receiving space 112；Closed cell 120 is provided with the second opening 121, and the second opening 121 is support unit
110 enter the entrance of the second accommodation space 122 of closed cell 120, and the second opening 121 is arranged in a staggered manner with the first opening 111；Branch
Support unit 110 is that pull is connect with closed cell 120, and the area of first opening 111 of the covering of closed cell 120 is with closed cell
120 relative to the moving and change along pull direction AA ' of support unit 110.
Wherein, it can be the electronic device of any required setting electromagnetic shielding protection by screen unit, such as can be use
In the probe unit of positron emission tomography (Positron Emission Computed Tomography, PET), electricity
The radio frequency letter that the maskable magnetic resonance imaging system of magnetic screen protective shell (Magnetic Resonance Imaging, MRI) issues
Number, protect the signal integrity of detector internal circuit in positron emission tomography.It can also be by screen unit
Electronic component in magnetic resonance imaging system.The material of support unit 110 may include following at least one: aluminium, copper and carbon fiber
Dimension.The material of closed cell 120 may include following at least one: aluminium, copper and carbon fiber.Support unit 110 and closed cell 120
Between can be and be detachably connected or non-dismountable connection.Optionally, the second opening 121 is less than the first opening 111.It will closing list
Along pull direction AA ' pull to when the first opening 111 is completely covered, the second opening 121 is staggered with the first opening 111 and sets member 120
It sets, without overlapping region.Optionally, support unit 110 can be connect with closed cell 120 by pull connection structure pull.It should
Pull connection structure may be disposed at the opposite two sides for being located at the first opening of support unit.Optionally, closed cell 120 can be with
It is cuboid or cylinder, closed cell 120 can also be the square bodily form.The shape of support unit 110 and closed cell 120
It is same or like.The shape and the first opening 111 and second of support unit 110 and closed cell 120 can be set as needed
The shape and position, the embodiment of the present invention of opening 121 are not construed as limiting this.
Closed cell 120 is not closed out the position that unit 120 covers along pull direction AA ' pull to the first opening 111,
The first receiving space 112 that support unit 110 can will be placed in through the first opening 111 by screen unit, then by closed cell 120
The position of the first opening 111 is completely covered along pull direction AA ' pull to closed cell 120, at this point, support unit 110 is complete
The second opening 121 of covering, support unit 110 and closed cell 120 can form completely enclosed space, single by shielding to surround
Member, so as to extraneous other equipment not interfered by the electromagnetic signal that screen unit generates, also not by the electromagnetic signal of other equipment
It influences.
It should be noted that Fig. 5 is the structural schematic diagram of another electromagnetic shielding protective shell provided in an embodiment of the present invention.
As shown in figure 5, the opposite housing of two parts up and down 170 is connected by screw to, in upper and lower two parts by the electromagnetic shielding protective shell
The position of the opposite contact of housing 170, can generate very long rectilinear slot, seam crossing can not be tightly bonded, and cause electromagnetic leakage, shadow
Ring shield effectiveness.
And it is connected in Fig. 4 by setting pull with closed cell 120 for support unit 110, the second opening 121 and first
Opening 111 is arranged in a staggered manner, and for closed cell 120 for covering the first opening 111, support unit and closed cell assemble the electricity to be formed
The enclosure space of magnetic screen, seam crossing are tightly bonded, and seam crossing overlapping area is larger, and the gap of generation is smaller, can reduce electricity
Magnetic dispersion improves the efficiency of electromagnetic shielding, can solve when being connected by screw to the opposite housing of two parts up and down in Fig. 5,
In the position of the opposite contact of upper and lower two parts housing, very long rectilinear slot can be generated, electromagnetic leakage is caused, influences shield effectiveness
The problem of, and no setting is required screw etc., it is easy to assembly.The electromagnetic shielding protective shell is that complete surround shields housing, and uses pull
The pull mode of the mounting means of movement, drawer-like or matchbox, the screen that can be formed to avoid similar upper and lower two parts housing
Slit caused by shield structure reveals electromagnetic effect, and the full encirclement electromagnetic shielding protective shell is special by mechanical interference fit
Property, keep the sealing at both ends more uniform close, reduces the electromagnetic wave leakage that both ends are cracked.
The technical solution of the present embodiment is connected by setting pull with closed cell for support unit, the second opening and the
One opening is arranged in a staggered manner, and the area of the first opening of closed cell covering is with closed cell relative to support unit along pull direction
Mobile and change, support unit and closed cell assemble the enclosure space for the electromagnetic shielding to be formed, and seam crossing is tightly bonded, seam
Locate overlapping area it is larger, the gap of generation is smaller, can reduce electromagnetic leakage, improves the efficiency of electromagnetic shielding, can solve by
When the opposite housing of two parts up and down is connected by screw to form electromagnetic shielding protective shell, in the opposite contact of upper and lower two parts housing
Position, the electromagnetism of the problem of very long rectilinear slot can be generated, electromagnetic leakage is caused, influence shield effectiveness and drawing and pulling type structure
Shielding protection shell is easy to assembly.
Optionally, the material of support unit and closed cell is carbon fiber, and the electric conductivity anisotropy of carbon fiber is interior
Portion is hardly formed circuit, has the characteristics that hindering high frequency leads to low frequency, relative to metal material, the vortex of generation reduces.
The embodiment of the present invention provides another electromagnetic shielding protective shell.On the basis of the above embodiments, with continued reference to Fig. 1
To Fig. 4, closed cell 120 includes enclosure portion and pull coupling part, and the area of the first opening 111 of enclosure portion covering is with envelope
Unit 120 is closed relative to the moving and change along pull direction AA ' of support unit 110, pull coupling part covers support unit
110 be located at first opening 111 opposite two sides and support unit 110 with first opening 111 opposite sides.
Wherein, each side in the opposite two sides for being located at the first opening 111 of pull coupling part covering support unit 110
At least partly region and support unit 110 with first opening 111 opposite sides at least partly region.In conjunction with Fig. 1
To shown in Fig. 4, the enclosure portion of closed cell 120 includes first part 1201, pull coupling part include second part 1202,
Part III 1203, Part IV 1204 and Part V 1205.Second part 1202 and the covering support of Part III 1203 are single
The opposite two sides for being located at the first opening 111 of member 110.Part IV 1204 and Part V 1205 cover support unit 110
With first opening 111 opposite sides.Wherein, pull coupling part is equivalent to pull connection structure, i.e. pull connection structure
It is an integral structure with closed cell 120, structure is simple, it is not necessary that complicated pull is arranged between support unit and closed cell
Connection structure, and pull coupling part is covered on support unit, so that area coverage increases, is reduced leakage field, is improved electromagnetic screen
Cover effect.
The embodiment of the present invention provides another electromagnetic shielding protective shell.Fig. 6 is another electricity provided in an embodiment of the present invention
The structural schematic diagram of magnetic screen protective shell, on the basis of the above embodiments, support unit 110 and closed cell 120 are in rectangular
The bodily form.
Wherein, support unit 110 includes five faces, and closed cell 120 includes four faces.Four faces of closed cell 120
It is respectively used to the first opening of covering, covering is located at the surface of the opposite two sides of the first opening 111, and covering support unit
The surface of the 110 111 opposite sides that are open with first.At this point, there are two seams for support unit 110 and closed cell 120
Place, positioned at the opposite two sides of the first opening.
Optionally, on the basis of the above embodiments, support unit 110 and closed cell 120 are in cuboid, and support is single
Member 110 include five faces, closed cell 120 include five faces so that the seam crossing of support unit 110 and closed cell 120 into
One step is reduced, only one seam crossing, positioned at the side of the first opening.
Optionally, closed cell 120 is close to the fringe region 123 and support unit 110 of the second opening 121 for covering
The fringe region 113 of the part of the opening of lid second 121 is provided with soft magnetic materials, and fringe region 123 and fringe region 113 are supporting
Part is opposite when unit and closed cell pull to completely enclosed state or is overlapped.The soft magnetic materials can be permalloy.It is logical
It crosses and soft magnetic materials is set in seam crossing, the sealing performance to electromagnetic wave can be increased.
The embodiment of the present invention provides a kind of probe assembly for positron emission tomography.Fig. 7 is that the present invention is implemented
A kind of probe unit that example provides is put into the structural schematic diagram of support unit.Fig. 8 is a kind of detection provided in an embodiment of the present invention
The structural schematic diagram of component.Fig. 9 is a kind of structural schematic diagram of probe assembly provided in an embodiment of the present invention.The probe assembly can
It is set in positron emission tomography, positron emission tomography and magnetic resonance imaging system may be disposed at
In medical imaging devices.Referring to figs. 7 and 8, which includes: probe unit 200 and any embodiment of that present invention
The electromagnetic shielding protective shell of offer, probe unit 200 are by screen unit.
Wherein, probe unit 200 can be used for detecting after those who are investigated have been injected radioactive drugs, and generation has
The photon of 511KeV energy.Magnetic resonance imaging system may include main magnet, gradient coil, RF receiving coil and radio-frequency transmissions line
Circle etc..
The probe unit for being used for positron emission tomography is placed in the electromagnetic shielding protective shell of drawing and pulling type structure
First receiving space reduces the electromagnetic signal of magnetic resonance imaging system to the shadow of the detector of positron emission tomography
It rings, and then the electromagnetic shielding performance of positron emission tomography can be improved, improve positron emission tomography system
The image quality of system.
The technical solution of the present embodiment is connected by setting pull with closed cell for support unit, the second opening and the
One opening is arranged in a staggered manner, and the area of the first opening of closed cell covering is with closed cell relative to support unit along pull direction
Mobile and change, support unit and closed cell assemble the enclosure space for the electromagnetic shielding to be formed, and seam crossing is tightly bonded, seam
Place's overlapping area is larger, and the gap of generation is smaller, can reduce electromagnetic leakage, improves the efficiency of electromagnetic shielding, can solve just
When being connected by screw to the opposite housing of two parts up and down in positron emission tomography system, in upper and lower two parts housing phase
To the position of contact, very long rectilinear slot can be generated, the problem of causing electromagnetic leakage, influence shield effectiveness, can be improved just
The electromagnetic shielding performance of positron emission tomography system improves the image quality of positron emission tomography, and group
Dress is convenient.
Probe assembly provided in an embodiment of the present invention includes the electromagnetic shielding protective shell in above-described embodiment, therefore the present invention
The probe assembly that embodiment provides also has beneficial effect described in above-described embodiment, and details are not described herein again.
Optionally, with continued reference to Fig. 7 and Fig. 8, probe unit 200 includes crystal structure 210 and two positioning end blocks 220,
Two positioning end blocks 220 are set to the both ends of crystal structure 210.
Wherein, crystal structure 210 can include: pixelated scintillators and photodiode array.End block 220 is positioned by determining
Position pin and screw are fixed on support unit 110.Two positioning end blocks 220 are for fixing crystal structure 210, accurately to fix
The spatial position of crystal structure.Being set to the electromagnetic shielding intracorporal positioning end block of protective shell can be nonmetallic materials.By crystal
Structure 210 and positioning end block 220 etc. are set to the inside of electromagnetic shielding protective shell, and electromagnetic shielding protective shell has positioning support function
The gap that mechanical connection generates can be can reduce with the electromagnetic wave shielding function at both ends, reduce probe unit by external electromagnetic waves
While interference, the cost debugged before detector factory is reduced.
Positioning end block 220 is set to the inside of electromagnetic shielding protective shell, can solve and protects using the electromagnetic shielding in Fig. 5
When protective case, crystal structure is placed in the opposite accommodation space surrounded of upper and lower two parts housing 170, crystal structure both ends pass through
Positioning end block is fixed, and positioning end block is fixed on bracket by shop bolt, which is copper billet, and positioning end block is located at upper
Electromagnetic shielding is played to block the both ends of upper and lower two parts housing 170 in the both ends of lower two parts housing 170, positions end block
For very thick copper billet, vortex when generating long during magnetic resonance imaging, the vortex duration for positioning end block is considerably longer than
Lower two parts housing 170, without good attenuating within 1 millisecond (being less than the scan period), the meeting in magnetic resonance imaging
The phase of signal is influenced, the eddy current decay of upper and lower two parts housing 170 quickly, will not be built up in the next scan period, and
The decaying of locating module is very slow, can not decay in present scanning cycle, in this way can be in the different scanning period of magnetic resonance
Phase accumulation is generated, to influence picture quality, and in the work of PET/MR all-in-one machine, upper and lower two parts housing 170 is in seam
Place leads to the problem of vibration noise.
Optionally, the material of support unit and closed cell is carbon fiber, and the electric conductivity anisotropy of carbon fiber is interior
Portion is hardly formed circuit, has the characteristics that hindering high frequency leads to low frequency, relative to metal material, can exist to avoid electromagnetic shielding protective shell
Under the action of the gradient magnetic of magnetic resonance imaging system, serious vortex is generated, the process for causing magnetic resonance imaging system to be imaged
Middle generation artifact.There is not large area or bulk metal in entire detector, has good electromagnetism with magnetic resonance imaging system
Compatible performance, under the precondition for guaranteeing shielding properties, the vortex of generation is smaller, makes the vortex generated in present scanning cycle
It is interior to have decayed, it will not be built up in the next scan period, solve the problems, such as influence of the vortex to the magnetic field of gradient coil.
The embodiment of the present invention provides another probe assembly.Fig. 9 is a kind of probe assembly provided in an embodiment of the present invention
Explosive view.Figure 10 is the structural schematic diagram of another electromagnetic shielding protective shell provided in an embodiment of the present invention.In above-described embodiment
On the basis of, in conjunction with shown in Fig. 7 to Figure 10, probe unit 200 further includes cooling layer 230 and two printed circuit boards 240, crystal
Structure 210 is electrically connected with printed circuit board 240,230 stacked arrangement of crystal structure 210, printed circuit board 240 and cooling layer；It is cold
But layer 230 is located between two printed circuit boards 240, and crystal structure 210 is located at printed circuit board 240 far from cooling layer 230
Side；Printed circuit board 240 is for receiving and processing the photon signal that crystal structure 210 detects；Support unit 110 and/or
Closed cell 120 is provided with aperture 150, the pipeline 233 of the entrance and exit setting of cooling layer 230 pass through aperture 150 respectively with
The export and import of cycle power device (not shown) is connected to.
Wherein, optionally, as shown in fig. 7, the depth H of aperture 150 be more than or equal to 1 centimetre, and be less than or equal to 10
Centimetre.Aperture 150 is equivalent to waveguide, leads to the leakage of electromagnetic wave, and the depth of aperture 150 is bigger, makes the easier decaying of electromagnetic wave.
According to the cut-off characteristics of waveguide, the depth of aperture is set.In conjunction with shown in Fig. 7 and Figure 10, a part setting of any aperture 150 exists
Support unit 110, referring to Fig. 7, another part of any aperture 150 is arranged on closed cell 120, is not shown in the figure, similar
Fig. 7, as shown in Figure 10, when being electromagnetically shielded protective shell in completely enclosed state, aperture 150 is set to support unit 110
A part is opposite with the another part for being set to closed cell 120, can be convenient the cooling layer for being connected with pipeline being packed into support
In unit, avoid bending pipeline when assembling.The cycle power device is coolant in cooling layer and cycle power device
Between offer power is provided.The coolant can be water or gas etc..
The embodiment of the present invention provides a kind of detector.Figure 11 is that a kind of structure of detector provided in an embodiment of the present invention is shown
It is intended to.The detector may be disposed at the medicine including positron emission tomography and magnetic resonance imaging system
In imaging device.The detector 1 includes the probe assembly 10 that multiple any embodiment of that present invention provide.
Wherein, Figure 11 illustratively draws the case where 2 probe assemblies 10 are oppositely arranged.2 probe assemblies 10 are located at quilt
The two sides of examiner.The number of probe assembly can be set as needed, the embodiment of the present invention is not construed as limiting this.The present invention is implemented
The detector that example provides includes probe assembly in above-described embodiment, therefore on detector provided in an embodiment of the present invention also has
Beneficial effect described in embodiment is stated, details are not described herein again.
Optionally, Figure 12 is the structural schematic diagram of another detector provided in an embodiment of the present invention, in above-described embodiment
On the basis of, which further includes ring support 20, and multiple probe assemblies 10 are arranged on a toroidal support, multiple probe assemblies
10 are arranged successively along the circumferencial direction of ring support 20.When those who are investigated are examined, positioned at the inside of ring support 20.Electromagnetic screen
The both ends for covering protective shell are provided with threaded hole or through-hole, and the both ends for being electromagnetically shielded protective shell can be locked by screw and shop bolt
It fastens on a toroidal support.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts, be combined with each other and substitutes without departing from protection scope of the present invention.Therefore, although by above embodiments to this
Invention is described in further detail, but the present invention is not limited to the above embodiments only, is not departing from present inventive concept
In the case of, it can also include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (10)
1. a kind of electromagnetic shielding protective shell characterized by comprising
Support unit, the support unit are provided with the first opening, and first opening is to enter the support by screen unit
The entrance of the first receiving space of unit；
Closed cell, the closed cell are provided with the second opening, and second opening is that the support unit enters the envelope
The entrance of the second accommodation space of unit is closed, second opening is arranged in a staggered manner with first opening；
The support unit is connect with the closed cell pull, and the closed cell covers the area of first opening with institute
Closed cell is stated relative to the support unit moving and change along pull direction.
2. electromagnetic shielding protective shell according to claim 1, which is characterized in that the closed cell include enclosure portion and
Pull coupling part, the area that the enclosure portion covers first opening are single relative to the support with the closed cell
Member moves and changes along pull direction, and what the pull coupling part covered the support unit is located at the opposite of the first opening
Two sides and the support unit with the opposite side of first opening.
3. electromagnetic shielding protective shell according to claim 1, which is characterized in that the support unit and the closed cell
In cuboid.
4. electromagnetic shielding protective shell according to claim 1, which is characterized in that the support unit and the closed cell
Material include following at least one: copper and carbon fiber.
5. electromagnetic shielding protective shell according to claim 1, which is characterized in that the closed cell is opened close to described second
The fringe region that the fringe region and the support unit of mouth are used to cover the part of second opening is provided with soft magnetism material
Material.
6. a kind of probe assembly characterized by comprising probe unit and electromagnetic shielding a method as claimed in any one of claims 1 to 5
Protective shell, the probe unit are by screen unit.
7. probe assembly according to claim 6, which is characterized in that the probe unit includes that crystal structure and two are fixed
Position end block, described two positioning end blocks are set to the both ends of the crystal structure.
8. probe assembly according to claim 7, which is characterized in that the probe unit further includes cooling layer and two prints
Printed circuit board, the crystal structure are electrically connected with the printed circuit board, the crystal structure, the printed circuit board and described
Cooling layer stacked arrangement；
For the cooling layer between described two printed circuit boards, the crystal structure is located at the printed circuit board far from institute
State the side of cooling layer；
The printed circuit board is for receiving and processing the photon signal that the crystal structure detects；
The support unit and/or the closed cell are provided with aperture, the pipeline of the entrance and exit setting of the cooling layer
It is connected to respectively with the export and import of cycle power device across the aperture.
9. a kind of detector, which is characterized in that including multiple such as probe assembly as claimed in claim 6 to 8.
10. detector according to claim 9, which is characterized in that further include ring support, the multiple probe assembly is set
It sets on the ring support, the multiple probe assembly is arranged successively along the circumferencial direction of the ring support.
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