CN103399026A - Comprehensive explosive detection system and method based on X-ray fluorescence (XRF) analysis technique - Google Patents
Comprehensive explosive detection system and method based on X-ray fluorescence (XRF) analysis technique Download PDFInfo
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Abstract
The invention relates to a comprehensive explosive detection system and method based on an X-ray fluorescence (XRF) analysis technique. The system comprises a sealing box body for detecting, a conveying channel through which objects pass, a computer and a control system, wherein at least one group of energy spectrum detection assemblies are arranged above and below or on the two sides of the conveying channel and are used for detecting the varieties and content of elements in the movable or static objects in the conveying channel. According to the comprehensive explosive detection system and method provided by the invention, the principle of the XRF analysis technology is used for detecting explosives and the like and is applicable to the fields of online safety monitoring and the like.
Description
Technical field:
The invention belongs to the XRF analysis technical applications, be specifically related to the new use for explosive thing comprehensive detection system of a kind of employing XRF (XRF) analytical technology, and use this system in motion or the explosive in static bulky items carry out the method for fast detecting.
Background technology:
The X-ray fluorescence spectra analytical approach is as one of indispensable method of material composition analysis; being widely used in the fields such as geology, metallurgy, building materials, petrochemical complex, semi-conductor industry, medical and health, environmental protection, is also a kind of quick, the accurate and economic multielement analysis method that material science, life science, environmental science etc. generally adopt.
Existing Xray fluorescence spectrometer, usually design a sample stage, sample to be checked is placed on platform and detects, can only detect for the sample of small volume such as electronic component, soil, sample ore, micro metal sample etc., be difficult to be applied to volume larger, such as parcel, luggage etc., and the determination and analysis of Minor element in baroque article.
In existing luggage security check equipment inspection mode, be to use the x-ray imaging principle, to the parcel, luggage article scan, according to delimitation and the definitions of color of different materials attribute, thereby different article are carried out qualitative analysis.But existing rays safety detection apparatus is to can not identifying fully such as special articles such as explosives, also need rule of thumb principium identification and open bag and check of security staff, this half artificial method of discrimination is very big for the undetected possibility of the stronger explosive of disguise, and both wasted a large amount of manpowers, increased again security staff's danger.
Plastic explosive is marked in order to mention in the pact " Montreal Convention " of surveying about annotating by International Civil Aviation Organization in nineteen nineties, adds the sign material in explosive, makes it to become detectivity.Based on above pact, if (and in explosive raw material) adds the sign material in explosive, the management and control to explosive (and explosive raw material), prevent that the terrorist from implementing illegal act significant.
Summary of the invention:
For the problems referred to above, fundamental purpose of the present invention is to provide a kind of comprehensive detection system of explosive based on the x-ray fluorescence analysis technology and detection method, larger and baroque luggage and article carry out imaging and spectroscopy detection to volume, and some element-specific in article is automatically identified and carried out qualitative and quantitative analysis.
For achieving the above object, a kind of comprehensive detection system of explosive based on the XRF analysis technology provided by the present invention, comprise and detect transfer passage and computing machine and the control system of passing through with closed box, confession article, in the upper and lower or both sides of described transfer passage, at least one group of power spectrum probe assembly is installed, is used for the element contamination of motion in transfer passage or static article is surveyed.
Described power spectrum probe assembly is two groups, is divided into power spectrum probe assembly and lower power spectrum probe assembly, and dislocation is respectively in the above and below of described transfer passage.
Described transfer passage comprises that level is arranged on two groups of belt feeders in described casing, two groups of belt feeder head and the tail are along holding, between narrow and small gap is arranged, upper power spectrum probe assembly is positioned at belt feeder top, lower power spectrum probe assembly is positioned at the belt feeder bottom, and the outlet of the X ray of lower power spectrum probe assembly is over against this gap, and the detecting head of lower power spectrum probe assembly stretches into this gap.
Described power spectrum probe assembly comprises X-ray tube assembly, detector assembly and optical gate assembly, and the detecting head of the outlet of the X ray of described X-ray tube assembly and detector assembly is all towards the space of transfer passage.
Described X-ray tube assembly comprises the annular seal space that is comprised of body, upper cover plate, expander and expander gland, in described annular seal space central authorities, by central dividing plate, is divided into two chambers, places high-tension terminal in a side cavity, places tube core in the opposite side chamber; Described tube core is connected by electric wire with high-tension terminal; In the chamber of placing described tube core, be provided with the protection chamber that X-ray-preventing is revealed, the side in described protection chamber offers the X ray outlet, the described optical gate assembly of described X ray outlet arranged outside; Described tube core is connected with the radiating block outside a chamber, and described expander and expander gland are arranged on described body.
Described optical gate assembly comprises motor mount, motor, rotating disk, rolling bearing, bearing rotating shaft, the web joint with slotted hole, guide plate and U-shaped stereotype, guide plate and U-shaped stereotype form one and are arranged on web joint, and guide plate is arranged in guide groove on described body simultaneously; Rolling bearing one end is arranged on rotating disk by the bearing rotating shaft, and the other end is arranged in the slotted hole of web joint.
With described X ray outlet correspondence position, fluting is equipped with optical filter on described body, and described optical gate assembly is between described X ray outlet and described optical filter.
Both sides at described transfer passage are equipped with three groups of correlation optoelectronic switches along the throughput direction interval, after described power spectrum probe assembly is arranged on second group of correlation optoelectronic switch at least.
One imaging system assembly also is set, is installed on the upper and lower or both sides of described transfer passage, be used for motion or static article in transfer passage are carried out x-ray imaging; Described imaging system assembly comprises X-ray machine and L-type detector panel, and being positioned at is after second group of optoelectronic switch at least, before or after being positioned at described power spectrum probe assembly.
The present invention also provides in a kind of 1 safety check based on the explosive method for comprehensive detection of x-ray fluorescence analysis technology, utilizes described explosive comprehensive detection system, when described imaging system assembly is positioned at before described power spectrum probe assembly, comprises the steps:
1) tested article are positioned on transfer passage and move;
2) make operating article by first group of correlation optoelectronic switch, control system moves to suitable detection height and position with described detector assembly;
3) make tested article continue to move ahead and arrive second group of correlation switch, control system is controlled to the work of picture system component, sends x-ray image to external computer;
4) external computer identification x-ray image, while confirming without suspicious object, article directly pass through; When identification had suspicious object, the suspicious region of computing machine in image added red collimation mark knowledge, and sends this information to control system;
5) the optical gate assembly of control system control power spectrum probe assembly is opened optical gate, article suspicious region on travelling belt is scanned, the XRF signal that the power spectrum probe assembly will gather is transferred to external computer and carries out x-ray fluorescence analysis, whether suspicious object is contained the sign material carry out qualitative and quantitative analysis, obtain testing result.
When described imaging system assembly is positioned at before described power spectrum probe assembly, comprise the following steps:
(1) tested article are positioned on transfer passage and move;
(2) make operating article by first group of correlation optoelectronic switch, control system moves to suitable detection height and position with described detector assembly;
(3) make tested article continue to move ahead and arrive second group of correlation switch, control system is controlled the optical gate assembly of power spectrum probe assembly and is opened optical gate, article on travelling belt are scanned comprehensively, the XRF signal that the power spectrum probe assembly will gather is transferred to external computer and carries out x-ray fluorescence analysis, sign material in article is carried out qualitative and quantitative analysis, obtain testing result and export to computing machine;
(4) computing machine sends output signal to control system, and control system is controlled to the work of picture system component, obtains x-ray image and sends external computer to.
When the explosive comprehensive detection system is not set as the picture system component, by step (1)-(3), implement.
Adopt technique scheme, design of the present invention goes for bulk sample and detects, and the article that can be opposite in passage carry out omnibearing determination and analysis, and Measuring Time is short, and accuracy is high.The rate of failing to report that empirical tests, this X ray integrated security check system include 100g or above explosive to large scale row bag in 0.5%,, to the small size parcel, includes the above explosive of 15g and all can detect.The detection particularly suitable of the present invention to fields such as safety check, online quality monitorings.
Description of drawings
Fig. 1 is surface structure schematic diagram of the present invention;
Fig. 2 is conveying assembly part-structure schematic diagram in the present invention;
Fig. 3 is inner each arrangement of components figure (not containing cabinet shell) of the present invention;
Fig. 4 is probe assembly structural representation on power spectrum in the present invention;
Fig. 5 surveys the modular construction schematic diagram under power spectrum in the present invention;
Fig. 6 is the cut-open view of X-ray tube assembly in the present invention;
Fig. 7 is the axonometric drawing of X-ray tube assembly in the present invention;
Fig. 8 is the body axonometric drawing of X-ray tube assembly in the present invention;
Fig. 9 is the axonometric drawing of optical gate assembly in the present invention;
Figure 10 is the axonometric drawing of middle slideway assembly of the present invention;
Figure 11 is each several part signal connection layout of the present invention.
Number in the figure: 10-box assembly, 20-conveying assembly, 30-imaging system assembly, probe assembly on 40-power spectrum, probe assembly under 50-power spectrum, 60-control system, 70-cooling system;
11-cabinet shell, 12-lower detector protective cover, 13,14,15-correlation optoelectronic switch, 16-relay indicating light, 17-fan, 18-roller;
21,22-belt feeder, 23-transfer passage, 24-plumbous rubber curtain;
31-X-ray machine, 32-L-type high precision detector array plate;
41-X-ray tube assembly, 42-detector assembly, 43-optical gate assembly, 44-slide assemblies, 45-high-voltage power supply, 46-high-voltage suppling power, 51-erecting frame;
411-body, 412-upper cover plate, 413-expander, 414-expander gland, 415-central dividing plate, 416-tube core, 417-radiating block, 418-high-tension terminal, 419-lead lining;
410a-guide plate, 410b-U-shaped stereotype, 411a-U-shaped guide groove, 411b-guide groove, 412c-lining with lead, 415a-sheet lead, 415b-cable tube, 416a-tube core insulating cylinder, 418a-High-Voltage Insulation cylinder, 419a-X ray outlet;
42a-detector, 42b-detector fixed mount, 42c-detector protective sleeve.
431-motor mounting plate, 432-motor, 433-rotating disk, 434-rolling bearing, the rotating shaft of 435-bearing, 436-web joint, 410a-guide plate, and 410b-U-shaped stereotype.
441-motor, 442-driving gear, 443-driven gear, 444-synchronizing wheel, 445-Timing Belt, 446-erecting frame, 447-leading screw, 448-nut seat, 449-mount pad.
Embodiment
, in order to describe technical scheme of the present invention in detail, show with a preferred embodiment and coordinate description of drawings as follows.
In a preferred embodiment, this detection system has comprised that two groups of power spectrum probe assemblies and form as assembly.
As shown in FIG. 1 to 3, detection system provided by the invention, comprise on box assembly 10, conveying assembly 20, imaging system assembly 30, power spectrum the parts such as probe assembly 50, control system 60, cooling system 70 under probe assembly 40, power spectrum, also comprise an external computer.Wherein:
Fixed mount is fixed in the inside of cabinet shell 11, be used for to install, the fixing internal assembly, and shown in Figure 2 is the exploded view that removes after casing, and wherein conveying assembly 20 depends on fixed mount and is fixed on casing.Conveying assembly 20 is included in two groups of belt feeders 21,22 that casing middle part level is installed, two groups of belt feeders 21,22 head and the tail are along holding but independent of one another, have the path channels of narrow and small gap as probe assembly under power spectrum 50 between them, every group of belt feeder mainly is comprised of motor, motorized pulleys, belt, bend pulley, tuningout cylinder, and belt feeder can be in rotating under driven by motor; Delivery port is respectively left in both sides, front and back at cabinet shell 11, and one as import, and one as outlet; The stem of belt feeder 21 is passed import, and the afterbody of belt feeder 22 passed through outlet, with this, forms transfer passage 23.All be covered with pure stereotype around transfer passage 23, plumbous rubber curtain 24 is installed on delivery port, can stop effectively that ray leaks outside.
Referring to Fig. 3, the seam crossing between the inner two groups of belt feeders 21 of box assembly 10 and 22 is equipped with protective cover 12, and is not damaged when article pass through for the protection of probe assembly under power spectrum 50; On the fixed mount of transfer passage 23 both sides, three groups of correlation optoelectronic switches 13,14,15 are equipped with at interval, can measure height and the position of testing sample; First group of height whether the optoelectronic switch 13 tested article of induction enter box house and measure tested article, second and third group optoelectronic switch 14,15 is measured the position that tested article arrive.
As shown in Figure 3, imaging system assembly 30 penetrates imaging technique (identical with existing luggage security check equipment) for the X ray of existing maturation, after being arranged on first group of optoelectronic switch 13 and second group of optoelectronic switch 14, it mainly is comprised of X-ray machine 31 and L-type detector panel 32.X-ray machine 31 is arranged on belt feeder 21 belows, is used for sending the fan-shaped X ray face that needs.L-type high precision detector array plate 32 be arranged on belt feeder 21 and be positioned at X-ray machine 31 directly over, major function is to accept the X ray signal that penetrates tested article that X-ray machine 31 sends, and carries out after conversion process being transferred in external computer carrying out image and processing.
The present embodiment arranges two groups of power spectrum probe assemblies, comprises on power spectrum probe assembly 50 under probe assembly 40 and power spectrum, and dislocation relatively is arranged on respectively the upper and lower both sides of transfer passage, is used for the tested article of dislocation irradiation.The present invention arranges two belt feeders 21 and 22 especially, and on power spectrum, probe assembly 40 is arranged on relatively forward (before the present invention defines position that article first pass through and be, as right in Fig. 3 is front) the top of belt feeder 21, another group power spectrum probe assembly 50 is arranged between two groups of belt feeders the below, gap and makes its X ray outlet 419a(referring to Fig. 6) over against this gap, its detector 42a(is referring to Fig. 5) stretch in gap.Two groups of belt feeders are set also to be considered for the light path design of probe assembly 50 under probe assembly on power spectrum 40 and power spectrum, the upper and lower that on power spectrum, under probe assembly 40 and power spectrum, probe assembly 50 lays respectively at transfer passage just can make both up and down distances as far as possible short, construct shorter light path, be beneficial to increase fluorescence intensity, survey more accurate; If use a belt feeder, under power spectrum detector assembly just must be positioned at belt below, can increase due to the impact of thickness of belt the detection difficulty of surveying the device assembly.
On power spectrum under probe assembly 40 and power spectrum probe assembly 50 structures substantially the same,, take probe assembly 40 on power spectrum as example, as shown in Figure 4, Figure 5, include X-ray tube assembly 41, detector assembly 42, optical gate assembly 43, high-voltage power supply 45 and 48V power supply 46.X-ray tube assembly 41 provides x-ray source, and detector assembly 42 is used for receiving XRF, and optical gate assembly 43 is according to the need of work opening and closing, and when optical gate was closed, XRF was blocked by optical gate fully, and detector assembly 42 can't receive data; High-voltage power supply 45 is used to light pipe to provide Guan Liuguan to press, and 48V power supply 46 is used to high-voltage power supply 45 that power supply is provided.In addition, on power spectrum, probe assembly 40 also comprises that slide assemblies 44(is referring to Fig. 4), under power spectrum, probe assembly 50 also comprises that erecting frame 51(is referring to Fig. 5), all for the power spectrum probe assembly is arranged on fixed mount, the X-ray tube assembly 41 of every group of power spectrum probe assembly, detector assembly 42, optical gate assembly 43, high-voltage power supply 45 and 48V power supply 46 are all made integrated package and are arranged on corresponding slide assemblies 44 or erecting frame 51.
As shown in Figure 6 to 8, X-ray tube assembly 41 comprises the compositions such as a rectangle body 411, upper cover plate 412, expander 413, expander gland 414, central dividing plate 415, tube core 416, radiating block 417, high-tension terminal 418, lead lining 419 and optical gate 410.Wherein, by body 411, upper cover plate 412, expander 413 and expander gland 414, form an annular seal space, annular seal space is divided into two chambers by central dividing plate 415, and one is sidelong to set high and presses socket 418, and opposite side is placed tube core 416; Expander 413 and expander gland 414 are arranged in a circular hole of body 411 bottoms.Expander is a rubber parts, and its effect is exactly to make the cavity volume variation with temperature of light pipe and change, and prevents from squeezing tube core broken because of the heat expansion of chamber inner high voltage insulating oil.
The X ray outlet 419a of optical tube assembly 41 and the detecting head of detector assembly 42, all towards transfer passage 23 spaces, take full advantage of the optimal detection zone of detector, simultaneously All Ranges X ray signal in detection channels.
On power spectrum, in probe assembly 40, as shown in Figure 4, Figure 5, detector assembly 42 comprises detector 42a, detector fixed mount 42b, detector protective sleeve 42c.Detector 42a is main sniffer, uses existing detector, and its front end has a columned detecting head; Detector fixed mount 42b is in order to fixed detector 42a; The detecting head that detector protective sleeve 42c is placed in detector 42a is not subjected to external interference or collision with the protection detector probe outward.
Optical gate assembly 43(is referring to Fig. 4 and Fig. 5) be contained on the body 411 in the X ray outlet 419a outside of X-ray tube assembly 41.As shown in Figure 9, optical gate assembly 43 comprises motor mount 431, motor 432, rotating disk 433, rolling bearing 434, bearing rotating shaft 435, the web joint 436 with slotted hole, guide plate 410a and U-shaped stereotype 410b410b.Guide plate 410a and U-shaped stereotype 410b410b form one and are arranged on web joint 436, and guide plate 410a is arranged in guide groove 411b on body 411 simultaneously; The inner ring of rolling bearing 434 is arranged on rotating disk 433 by bearing rotating shaft 435, and the outer ring of rolling bearing 434 is arranged in the slotted hole of web joint 436; Motor 432 drives rotating disk 433 rotations, rolling bearing 434 moves in slotted hole, move in guide groove 411b by web joint 436 drive guide plate 410a and U-shaped stereotype 410b simultaneously, the purpose of blocking X ray outlet 419a is played in moving up and down of U-shaped stereotype 410b.
Further, offer a U-lag 411a on the body 411 corresponding with X ray outlet 419a position, optical filter is installed in U-lag 411a.The effect of optical filter is the interference that the scattering background of the target characteristic spectral line of eliminating or weaken the interference analysis line, impurity lines, successive line etc. causes, improves detection limits.Ray is blocked in U-shaped stereotype 410b slip before and after X ray outlet 419a and the optical filter outside (in Fig. 6, Fig. 7, direction is up and down).
Outside at tube core 416 connects radiating block 417, and radiating block 417 is connected with heating radiator with water pump, to the target core, carries out cooling.After tube core 416 and radiating block 417 are bolted and become one, with high-tension terminal 418, be arranged on upper cover plate 412 by bolt respectively.
In the present embodiment, for probe assembly on power spectrum 40, detector assembly 42 is assembled into one with optical tube assembly 41 and is arranged on slide assemblies 44, according to the difference of tested article height, slide assemblies can move up and down appropriate location according to the case and bag height with optical tube assembly and detector assembly.For probe assembly under power spectrum 50, detector assembly 42 is assembled into one with optical tube assembly 41 and is arranged on erecting frame 51, is fixed on the fixed mount of box assembly 10.
In the present invention, the electrical parts such as imaging system, high-voltage power supply, X-ray tube, detector, fan, optoelectronic switch, relay indicating light all connect in a usual manner.Control system 60 comprises general feedback module and control module, assembly connection in due form, wherein feedback module comprises feedback channel, for being transferred to external computer after the signal data that receives correlation optoelectronic switch 13,14,15 feedbacks, wherein control module comprises optical gate control channel, slide assemblies control channel and pilot lamp control channel, is respectively used to control the Push And Release of optical gate assembly 43, the movement of slide assemblies 44 and the Push And Release of relay indicating light 16 etc.The data line of each detector (detector assembly 42, L-type high precision detector array plate 32) pools together with external computer and is connected, and by computing machine, directly controls the spectral data that Push And Release and reception collect.Referring to Figure 11.
After on conveying assembly 20, imaging system assembly 30, power spectrum, under probe assembly 40, power spectrum, probe assembly 50, control system 60 and cooling system 70 are assembled by above-mentioned introduction, (referring to Fig. 3) is fixed in the cabinet shell 11 of box assembly 10 again, forms the preferred forms of the X ray integrated security check system (referring to Fig. 1) of multidetector of the present invention and the design of many light pipes.
Utilize the detection method of the above system:
1) article to be measured are positioned on belt feeder 21, start belt feeder 21 operations;
2) operating article are by first group of correlation optoelectronic switch 13, this optoelectronic switch 13 detects the article height of admission passage, send detection signal to external computer, control system 60 is controlled slide assemblies 44 and X-ray tube assembly 41(is in optical gate is closed state to be measured) and upper and lower two groups of detector assemblies 42 move to corresponding detection height position (can effectively increase measuring accuracy).
3) tested article continue to move ahead, arrive second group of correlation switch 14 position, after detecting the article signal, transmits by this optoelectronic switch 14, control system 60 is controlled to as system component 30 and opens X-ray machine 31, relay indicating light 16 lights, the fan-shaped X ray that X-ray machine 31 produces passes the article on travelling belt, and 32 receptions of L-type high precision detector array plate send external computer to by the Transmission X ray signal after tested article and show with image format.
4) scan the x-ray image of generation for 30 pairs of article of imaging system assembly, when external computer was identified without suspicious object, article directly passed through; When if identification has suspicious object, computing machine (or operating personnel are manual) suspicious region in image automatically adds red collimation mark knowledge, and send this information to control system 60, control on power spectrums the optical gate assembly 43 of probe assembly 50 under probe assembly 40 and power spectrum by control system 60 and open optical gate, the beam that the simple X ray that X-ray tube assembly 41 produces becomes certain thickness and width after filtration after mating plate passes the suspicious object (emphasis is surveyed the suspicious region that has added red frame) on travelling belt; Detector assembly 42 receives the XRF that tested suspicious object reflects, the data transmission that collects is carried out x-ray fluorescence analysis to external computer, carry out qualitative and quantitative analysis thereby whether suspicious object is contained the sign material, obtain testing result.
When 5) tested article drive by the 3rd group of correlation optoelectronic switch 15 by belt feeder 22, this optoelectronic switch 15 sends a signal to control system 60, control system control on power spectrum probe assembly 50 under probe assembly 40 and power spectrum optical gate assembly 43 close, tested article, by the plumbous rubber curtain 24 of outlet, detect and finish.
Detection example: for whether existing explosive to detect in article.Article to be checked are placed on belt feeder, open system, click " starting to measure " button on external computer operation interface, article to be checked pass through belt feeder, measure and finish after tens of seconds, display measurement result on the external computer screen, comprise pictograph or sound (be divided into " safety ", " alarm " reaches classifications such as " resurveying ") prompting, also can show quantitative detection numerical value.The method detection speed is fast, and after tested, system of the present invention can detect the large scale row bag of built-in 100g or above explosive, and (size 550mm * 400mm * 300mm), rate of failing to report is in 0.5%; (size: 200mm * 200mm * 100mm), include the above explosive of 15g and all can detect, have good effect for explosive detection for the small size parcel.
Adopt the X ray comprehensive detection system of above-mentioned design, the channel size in this example is that 500mm * 310mm(can extend to according to actual conditions that 1000mm * 1000mm), the X-ray tube assembly has 4, and detector assembly has 6, and enough scanning is used.
In addition, by aforementioned preferred forms, the present invention can also carry out following variation:
Change one, omit imaging system assembly 30.This mode directly scans and detects whole bag with the power spectrum probe assembly, is suitable for need not to obtain radioscopic image, direct situation for sign material qualitative and quantitative detection, is used for the anti-explosion safety inspection field.
Before changing two, the power spectrum probe assembly being arranged on imaging system assembly 30, after second group of optoelectronic switch 14.This mode is suitable for first to sign material qualitative and quantitative detection, the situation of rear formation radioscopic image.
Change three, the present invention utilizes the XRF analysis know-why, can only install one group of power spectrum probe assembly, be arranged on passage or all can in lower or side.
Change four, the present invention utilizes the XRF analysis know-why, can install two groups of above power spectrum probe assemblies, be arranged on passage or all can in lower or side.
As shown in the above description, the present invention carries out the design of built-up pattern blocking with the member of complexity, is more convenient for installing and maintenance.In addition, on box assembly 10 and conveying assembly 20, imaging system assembly 30, power spectrum, the respective design of probe assembly 50 under probe assembly 40, power spectrum, make system of the present invention can further expand the detection that is applicable to bulky items.
Claims (10)
1. comprehensive detection system of the explosive based on the x-ray fluorescence analysis technology, comprise and detect transfer passage and computing machine and the control system of passing through with closed box, confession article, it is characterized in that: in the upper and lower or both sides of described transfer passage, at least one group of power spectrum probe assembly is installed, is used for the element contamination of motion in transfer passage or static article is surveyed.
2. explosive comprehensive detection system according to claim 1, it is characterized in that: described power spectrum probe assembly is two groups, is divided into power spectrum probe assembly and lower power spectrum probe assembly, dislocation is respectively in the above and below of described transfer passage.
3. explosive comprehensive detection system according to claim 2, it is characterized in that: described transfer passage comprises that level is arranged on two groups of belt feeders in described casing, two groups of belt feeder head and the tail are along holding, between narrow and small gap is arranged, upper power spectrum probe assembly is positioned at belt feeder top, lower power spectrum probe assembly is positioned at the belt feeder bottom, and the X ray of power spectrum probe assembly exports over against this gap down, and the detecting head of lower power spectrum probe assembly stretches into this gap.
4. according to claim 1 and 2 or 3 described explosive comprehensive detection systems, it is characterized in that: described power spectrum probe assembly comprises X-ray tube assembly, detector assembly and optical gate assembly, and the detecting head of the outlet of the X ray of described X-ray tube assembly and detector assembly is all towards the space of transfer passage.
5. explosive comprehensive detection system according to claim 4, it is characterized in that: described X-ray tube assembly comprises the annular seal space that is comprised of body, upper cover plate, expander and expander gland, be divided into two chambers in described annular seal space central authorities by central dividing plate, place high-tension terminal in one side cavity, place tube core in the opposite side chamber; Described tube core is connected by electric wire with high-tension terminal; In the chamber of placing described tube core, be provided with the protection chamber that X-ray-preventing is revealed, the side in described protection chamber offers the X ray outlet, the described optical gate assembly of described X ray outlet arranged outside; Described tube core is connected with the radiating block outside a chamber, and described expander and expander gland are arranged on described body.
6. according to claim 4 or 5 described explosive comprehensive detection systems, it is characterized in that: described optical gate assembly comprises motor mount, motor, rotating disk, rolling bearing, bearing rotating shaft, the web joint with slotted hole, guide plate and U-shaped stereotype, guide plate and U-shaped stereotype form one and are arranged on web joint, and guide plate is arranged in guide groove on described body simultaneously; Rolling bearing one end is arranged on rotating disk by the bearing rotating shaft, and the other end is arranged in the slotted hole of web joint.
7. according to claim 5 or 6 described explosive comprehensive detection systems is characterized in that: with described X ray outlet correspondence position, fluting is equipped with optical filter on described body, and described optical gate assembly is between described X ray outlet and described optical filter.
8. explosive comprehensive detection system described according to aforementioned any one claim, it is characterized in that: the both sides at described transfer passage are equipped with three groups of correlation optoelectronic switches along the throughput direction interval, after described power spectrum probe assembly is arranged on second group of correlation optoelectronic switch at least.
9. explosive comprehensive detection system according to claim 8, is characterized in that: an imaging system assembly also is set, is installed on the upper and lower or both sides of described transfer passage, be used for motion or static article in transfer passage are carried out x-ray imaging; Described imaging system assembly comprises X-ray machine and L-type detector panel, and being positioned at is after second group of optoelectronic switch at least, before or after being positioned at described power spectrum probe assembly.
In a safety check based on the explosive method for comprehensive detection of x-ray fluorescence analysis technology, it is characterized in that: utilize the described explosive comprehensive detection system of claim 9, and described imaging system assembly comprises the steps: before being positioned at described power spectrum probe assembly
1) tested article are positioned on transfer passage and move;
2) make operating article by first group of correlation optoelectronic switch, control system moves to suitable detection height and position with described detector assembly;
3) make tested article continue to move ahead and arrive second group of correlation switch, control system is controlled to the work of picture system component, sends x-ray image to external computer;
4), external computer identification x-ray image, while confirming without suspicious object, article directly pass through; When identification had suspicious object, the suspicious region of computing machine in image added red collimation mark knowledge, and sends this information to control system;
5) the optical gate assembly of control system control power spectrum probe assembly is opened optical gate, article suspicious region on travelling belt is scanned, the XRF signal that the power spectrum probe assembly will gather is transferred to external computer and carries out x-ray fluorescence analysis, whether suspicious object is contained the sign material carry out qualitative and quantitative analysis, obtain testing result.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103662723A (en) * | 2013-12-25 | 2014-03-26 | 大同煤矿集团有限责任公司 | Worker-falling-preventing safety protector of pyroelectric infrared rubber belt conveyor |
| CN103808741A (en) * | 2014-03-07 | 2014-05-21 | 黄善花 | Luggage security check machine and check method thereof |
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