CN105044788A - Channel-type parcel security inspection machine based on nuclear quadrupole moment resonance technology - Google Patents
Channel-type parcel security inspection machine based on nuclear quadrupole moment resonance technology Download PDFInfo
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- CN105044788A CN105044788A CN201510447961.1A CN201510447961A CN105044788A CN 105044788 A CN105044788 A CN 105044788A CN 201510447961 A CN201510447961 A CN 201510447961A CN 105044788 A CN105044788 A CN 105044788A
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Abstract
The invention relates to a channel-type parcel security inspection machine based on nuclear quadrupole moment resonance technology. The security inspection machine comprises an electronic component, a transmission component, a structural framework, an excitation and receiving coil assembly, a shielding assembly and an alarm component. The shielding assembly comprises an electronic shielding body and a double-layer shielding body. The double-layer shielding body comprises an inner-layer shielding cover and an outer-layer shielding housing. The outer-layer shielding housing is formed by a machine housing, a roller wrapping head, and an outer-layer conductive rubber curtain. The inner-layer shielding cover is formed by a metal cover, an elastic conductive spring sheet and an inner-layer conductive rubber curtain. The electronic shielding body shields the electronic component, and each surface thereof is provided with radiating holes. The omnibearing shielding of the channel-type inspection device is realized based on the nuclear quadrupole moment resonance technology, and the channel-type parcel security inspection machine provides good foundation for realizing good detection index of the nuclear quadrupole moment resonance technology.
Description
Technical field
The present invention relates to atom nuclear quadrupole resonance safety check technical field, be specifically related to a kind of channel-type mailbag drugs screening machine based on nuclear quadrupole resonance technology.
Background technology
In recent years, national governments constantly strengthen the safety inspection to various public place.In numerous Examined effect, atom nuclear quadrupole resonance detection technique is a kind of harmless, safe and reliable advanced detection technique.Utilize technique can carry out accurate qualitative detection to the dangerous substance such as explosive, drugs.
Atom nuclear quadrupole resonance detection technique signal is very faint, and the electromagnetic interference (EMI) in external environment is very large on the impact detected, so good electromagnetic screen is the key issue using this technology to carry out safety check must to solve.
Technique is applied in channel-type structure, and detected material needs device channels of being back to back, and this causes the body fuselage of equipment not close, and outside electromagnetic interference can enter surveyed area from gateway, causes interference to receiving circuit.Therefore, the electromagnetic screen of channel-type equipment has difficulties, and special needs solves specially.
Summary of the invention
The object of the present invention is to provide a kind of channel-type mailbag screening machine based on nuclear quadrupole resonance technology, this screening machine can identify the dangerous goods such as drugs and explosive, and reaches ideal sensitivity and identify degree of stability.
For achieving the above object, present invention employs following technical scheme:
A kind of channel-type mailbag screening machine based on nuclear quadrupole resonance technology, comprise electronics component, transfer member, structural framing, excite and receiving coil assembly, shield assembly and warning piece, it is characterized in that, shield assembly comprises electronics shield and double layer screen body; Described double layer screen body comprises internal layer radome and outer shielding case, and internal layer radome is made up of metal cap, elastic conduction reed, inner layer conductive rubber curtain; Outer shielding case is made up of body fuselage, cylinder packet header, outer conductive rubber curtain; Described metal cap is made up of bending sheet metal and not bending sheet metal;
Described elastic conduction reed is sickle shaped, sweep is flexible, straight line portion does not have elasticity, inelastic one end is fixed on bending sheet metal, resilient sweep is clipped between not bending sheet metal and bending sheet metal, and not bending sheet metal, elastic conduction reed and bending sheet metal is fixed by the array space of elastic conduction reed.
Further, the sweep of described elastic conduction reed is strip array structure.
Further, described transfer member comprises cylinder and travelling belt, and be fixed with cylinder packet header at the cylinder place at transfer member two ends, cylinder packet header and body fuselage are combined to form and shield completely.
Further, described structural framing comprises bracing frame, front baffle, afterframe and curtain support, described front baffle, excite and be square shape structure with receiving coil assembly and afterframe and be fixedly connected sequentially, after connecting, the bottom of three is fixed on bracing frame through endless belt conveyer.
Further, described outer conductive rubber curtain is separately fixed at the porch of front baffle and the exit of afterframe, and described inner layer conductive rubber curtain is separately fixed at the notch place of front baffle and afterframe by curtain support.
Further, described curtain support is L-type structure, and one end is fixed on the notch place of front baffle and afterframe, and the other end is fixed with inner layer conductive rubber curtain.
Further, described metal cap shields front baffle, excites and receiving coil assembly and afterframe three, body fuselage shielding internal layer radome and electronics shield.
Further, described electronics shield is double-decker, electronics shield is distributed with the louvre array becoming diagonally opposing corner structure between ranks.
Further, the length of described porch inner layer conductive rubber curtain is not more than front baffle notch to exciting the distance with receiving coil assembly coil.
Further, described elastic conduction reed uses elastic conducting material.
From above technical scheme, the invention has the beneficial effects as follows:
(1) the present invention uses double layer screen body, and make in undesired signal equipment more difficult to get access, wherein metal cap and inner layer conductive rubber curtain are to the shielding of passage, also serve the effect of screening electron, outer shielding case isolation outside electromagnetic interference.
(2) the present invention uses the elastic conduction reed of sickle shaped structure at the lap of not bending sheet metal and bending sheet metal, and sweep is strip array structure, the electromagnetic wave that can prevent external interference electromagnetic wave and electronics from producing like this enters from lap.
(3) the present invention is provided with cylinder packet header at the two ends of cylinder, is electrically connected, makes the complete shielding of equipment with body fuselage and outer conductive rubber curtain.
(4) the present invention is provided with electronics component in the below of sense channel, has electronics shield in electronics component outer setting, for the electromagnetic interference (EMI) of screening electron member.Enclosure-type shielding can make the heat accumulation produced in the electronics component course of work, too high temperature can affect electronics work, so arrange the louvre array becoming diagonally opposing corner structure between ranks on electronics shield, the borehole structure of specific range can effectively shield detecting band electromagnetic wave, both solve heat dissipation problem like this, also solve the problem of shielding.
(5) the present invention arranges outer conductive rubber curtain and inner layer conductive rubber curtain at the two ends of passage, when preventing inspected object admission passage, single layer of conductive rubber curtain starts and causes testing environment not exclusively to shield, and the length of inner layer conductive rubber curtain is not more than front baffle notch to exciting the distance with receiving coil assembly coil, has an impact when can prevent outer conductive rubber curtain and inner layer conductive rubber curtain from starting like this to testing result simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural drawing of complete machine in the present invention;
Fig. 2 is the sectional view of left view of the present invention;
Fig. 3 is that in Fig. 2, rear elastic conduction reed position installation diagram is amplified in B region;
Fig. 4 is elastic conduction reed structure figure.
Wherein:
1, electronics component, 2, transfer member, 3-1, bracing frame, 3-2, front baffle, 3-3, afterframe, 3-4, curtain support, 4, excite and receiving coil assembly, 5, cylinder packet header, 6, body fuselage, 7-1, not bending sheet metal, 7-2, bending sheet metal, 8, outer conductive rubber curtain, 9, inner layer conductive rubber curtain, 10, elastic conduction reed, 11, electronics shield, 12, louvre, 13, warning piece.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described:
As Figure 1-4, a kind of channel-type mailbag screening machine based on nuclear quadrupole resonance technology, comprises electronics component 1, transfer member 2, structural framing, excites and receiving coil assembly 4, shield assembly and warning piece 13.Shield assembly comprises electronics shield and double layer screen body.Double layer screen body comprises internal layer radome and outer shielding case, and internal layer radome is made up of metal cap, elastic conduction reed 10, inner layer conductive rubber curtain 9; Outer shielding case is made up of body fuselage 6, cylinder packet header 5, outer conductive rubber curtain 8; Described metal cap is made up of bending sheet metal 7-1 and not bending sheet metal 7-2.Structural framing comprises bracing frame 3-1, front baffle 3-2, afterframe 3-3 and curtain support 3-4, and wherein front baffle 3-2 and afterframe 3-3 has notch on top, and curtain support 3-4 is L-type structure.
In the periphery of structural framing, outer shielding case and internal layer radome are installed.Metal cap is combined with elastic conduction reed 10, with shield excite with Received signal strength beyond signal.Wherein elastic conduction reed 10 is without playing partial fixing on bending sheet metal 7-2, resilient sweep is clipped between not bending sheet metal 7-1 and bending sheet metal 7-2, and not bending sheet metal 7-1, elastic conduction reed 10 and bending sheet metal 7-2 is fixed by the array space of elastic conduction reed 10.Same, the cross surface of all not bending sheet metal 7-1 and bending sheet metal 7-2 is all equipped with elastic conduction reed 10 and shields further.The resilient sweep of elastic conduction reed 10 is array structure, and such structure makes to form seamless link between not bending sheet metal 7-1 and bending sheet metal 7-2.And elastic conduction reed 10 is elastic conducting material, has better shield effectiveness.
Further, transfer member 2 passes and is fixed on bracing frame 3-1, transfer member 2 comprises travelling belt and cylinder, cylinder is arranged on the two ends of bracing frame 3-1, enter from the transfer member 2 stretched out for preventing noise, at the two ends of transfer member 2, cylinder packet header 5 is housed, cylinder packet header 5 and body fuselage 6 combination realize the shielding completely of sense channel.
Further, front baffle 3-2, excite the centre position being fixed on bracing frame 3-1 with receiving coil assembly 4 and afterframe 3-3 successively, and all surround shielding by internal layer radome.Wherein, front baffle 3-2 is fixed on porch, and outer conductive rubber curtain 8 is fixed on front baffle 3-2 foremost, and inner layer conductive rubber curtain 9 is fixed on the notch place of front baffle 3-2 by curtain support 3-4.Same, be provided with afterframe 3-3 in exit, outer conductive rubber curtain 8 is fixed on the rearmost end of afterframe 3-3, and inner layer conductive rubber curtain 9 is fixed on the notch place of afterframe 3-3 by curtain support 3-4.Wherein the height of inner layer conductive rubber curtain 9 is less than the height of outer conductive rubber curtain 8, front baffle 3-2 notch place is not less than the height of inner layer conductive rubber curtain 9 with the distance of coil on receiving coil assembly 4 with exciting, and prevents inner layer conductive rubber curtain 9 from being affected testing result by starting.Be positioned in the middle of front baffle 3-2 and afterframe 3-3 to excite with receiving coil assembly 4 be hollow structure, excite and be positioned at the centre of endless belt conveyer with the bottom of receiving coil assembly 4 together with front baffle 3-2 and afterframe 3-3 and be fixed on bracing frame 3-1, due to the rotation of travelling belt, make inspected object can pass front baffle 3-2 successively with travelling belt, excite and receiving coil assembly 4 and afterframe 3-3, through when exciting with receiving coil assembly 4, excite, with the coil on receiving coil assembly 4, testing result is sent into electronics component.
Further, electronics component 1 loads the below of bracing frame 3-1, and the outside of electronics component 1 is provided with electronics shield 11, and wherein electronics shield 11 is double-decker, the electromagnetic interference (EMI) of so better screening electron.And on electronics shield 11, have circular louvre 12 array becoming diagonally opposing corner structure between ranks, so both solve electronics heat dissipation problem, also prevent the electromagnetic interference (EMI) of electronics component 1 from having an impact to detection to the testing result signal that has an impact.
The testing process of this shielding screening machine is as follows:
After the work of atom nuclear quadrupole resonance detection technique screening machine, inspected object is placed on travelling belt that transfer member 2 operates, inspected object successively by outer conductive rubber curtain 8, inner layer conductive rubber curtain 9, the front baffle 3-2 of porch, excite and the inner layer conductive rubber curtain 9 in receiving coil assembly 4, afterframe 3-3, exit and outer conductive rubber curtain 8.When inspected object is in time exciting with receiving coil assembly 4, excite, with receiving coil assembly 4 coil, testing result is sent to electronics component 1, through the process of electronics component 1, judge that whether inspected object is dangerous, at that time during dangerous goods, electronics component 1 controls warning piece 13 and works, the final function realizing detecting.
Above-described embodiment is only be described the preferred embodiment of the present invention; not scope of invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.
Claims (10)
1. the channel-type mailbag screening machine based on nuclear quadrupole resonance technology, comprise electronics component, transfer member, structural framing, excite and receiving coil assembly, shield assembly and warning piece, it is characterized in that, shield assembly comprises electronics shield and double layer screen body; Described double layer screen body comprises internal layer radome and outer shielding case, and internal layer radome is made up of metal cap, elastic conduction reed, inner layer conductive rubber curtain; Outer shielding case is made up of body fuselage, cylinder packet header, outer conductive rubber curtain; Described metal cap is made up of bending sheet metal and not bending sheet metal;
Described elastic conduction reed is sickle shaped, sweep is flexible, straight line portion does not have elasticity, inelastic one end is fixed on bending sheet metal, resilient sweep is clipped between not bending sheet metal and bending sheet metal, and not bending sheet metal, elastic conduction reed and bending sheet metal is fixed by the array space of elastic conduction reed.
2. a kind of channel-type mailbag screening machine based on nuclear quadrupole resonance technology according to claim 1, it is characterized in that, the sweep of described elastic conduction reed is strip array structure.
3. a kind of channel-type mailbag screening machine based on nuclear quadrupole resonance technology according to claim 1, it is characterized in that, described transfer member comprises cylinder and travelling belt, be fixed with cylinder packet header at the cylinder place at transfer member two ends, cylinder packet header and body fuselage are combined to form and shield completely.
4. a kind of channel-type mailbag screening machine based on nuclear quadrupole resonance technology according to claim 1, it is characterized in that, described structural framing comprises bracing frame, front baffle, afterframe and curtain support, described front baffle, excite and be square shape structure with receiving coil assembly and afterframe and be fixedly connected sequentially, after connecting, the bottom of three is fixed on bracing frame through endless belt conveyer.
5. a kind of channel-type mailbag screening machine based on nuclear quadrupole resonance technology according to claim 4, it is characterized in that, described outer conductive rubber curtain is separately fixed at the porch of front baffle and the exit of afterframe, and described inner layer conductive rubber curtain is separately fixed at the notch place of front baffle and afterframe by curtain support.
6. a kind of channel-type mailbag screening machine based on nuclear quadrupole resonance technology according to claim 5, it is characterized in that, described curtain support is L-type structure, and one end is fixed on the notch place of front baffle and afterframe, and the other end is fixed with inner layer conductive rubber curtain.
7. a kind of channel-type mailbag screening machine based on nuclear quadrupole resonance technology according to claim 4, it is characterized in that, described metal cap shields front baffle, excites and receiving coil assembly and afterframe three, body fuselage shielding internal layer radome and electronics shield.
8. a kind of channel-type mailbag screening machine based on nuclear quadrupole resonance technology according to claim 1, it is characterized in that, described electronics shield is double-decker, electronics shield is distributed with the louvre array becoming diagonally opposing corner structure between ranks.
9. a kind of channel-type mailbag screening machine based on nuclear quadrupole resonance technology according to claim 6, is characterized in that, the length of described porch inner layer conductive rubber curtain is not more than front baffle notch to exciting the distance with receiving coil assembly coil.
10. a kind of channel-type mailbag screening machine based on nuclear quadrupole resonance technology according to claim 1, is characterized in that, described elastic conduction reed uses elastic conducting material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510447961.1A CN105044788A (en) | 2015-07-24 | 2015-07-24 | Channel-type parcel security inspection machine based on nuclear quadrupole moment resonance technology |
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| CN201510447961.1A CN105044788A (en) | 2015-07-24 | 2015-07-24 | Channel-type parcel security inspection machine based on nuclear quadrupole moment resonance technology |
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| CN105044788A true CN105044788A (en) | 2015-11-11 |
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Cited By (1)
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| CN106405667A (en) * | 2016-10-20 | 2017-02-15 | 中控智慧科技股份有限公司 | X-ray security inspection machine |
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