CN2901301Y

CN2901301Y - Portable double energy X-ray detector

Info

Publication number: CN2901301Y
Application number: CN 200520114149
Authority: CN
Inventors: 廖建新; 董明文
Original assignee: First Research Institute of Ministry of Public Security; Beijing Zhongdun Anmin Analysis Technology Co Ltd
Current assignee: First Research Institute of Ministry of Public Security; Beijing Zhongdun Anmin Analysis Technology Co Ltd
Priority date: 2005-07-15
Filing date: 2005-07-15
Publication date: 2007-05-16
Anticipated expiration: 2015-07-15

Abstract

The utility model discloses a portable double energy transient X-ray testing fixture, which comprises a X-ray source carrying box (1), a projection lightproof carrying box (3) and a controller carrying box (4). The utility model controls the filtration plate (24) to put it in the position of energy 'one' and get the perspective image of the inspected object (2) from the computer (6), the computer (6) proceeds and displays the perspective image of different gray-scale layers of the inspected object (2) by making use of FISCAN professional software package for test operator to make initiative judgment. Then, the filtration plate (24) is put in the position of energy 'one' and the new perspective image of the inspected object (2) is generated from the computer (6), the material analysis and process of the previous and latter digital image are operated by making use of FISCAN professional software package of the computer (6) to calculate equivalent atomic number of various objects, make distinction of the organics, inorganics and compound and display in different colors.

Description

Portable double energy X-ray detector

Technical field

The utility model relates to a kind of social public security checkout facility, particularly a kind of portable double energy X-ray detector.

Background technology

The Portable X-ray testing fixture is mainly used in customs, and public places such as airport are used to check contraband goodss such as the metal weapon that is hidden in the article such as luggage parcel, explosive, drugs.

The traditional x-ray imaging technology of the general employing of existing all kinds of Portable X-ray testing fixtures at present, gray-level and graph outline by the inspected object transmission image are discerned, and the gray-level of transmission image and graph outline are that the fluoroscopy images by various article in the X ray transillumination path is formed by stacking.

For being hidden in metal contraband goodss such as gun in clothing, the books, cutter, because its density is than big many of the density of clothing, books, and have tangible shape, traditional x-ray imaging technology can demonstrate more gray-level and tangible profile, thereby than being easier to identification.And for organism such as explosive or drugs, because its density is little, the damping capacity of X ray is little, can't demonstrate more gray-level; And explosive or drugs do not have specific shape facility, thereby difficult the resolution.

The utility model content

The utility model overcomes the shortcoming of prior art, provides a kind of and can obviously differentiate organic portable double energy X-ray detectors such as explosive or drugs.

The utility model adopts the surface detector imaging method, the double-exposure mode, obtain the X ray of two kinds of different-energies with the filtering plate switching device shifter in the ray outlet, the X ray transmission is detected object, on video screen, successively obtain being detected two width of cloth fluoroscopy images of object, through after the software processes, inorganics just shows with different colouring discriminations with organism, thereby reaches the purpose of differentiating explosive or drugs this fluoroscopy images in computing machine.

The utility model comprises that x-ray source carries case, and the projection camera bellows carries case and controller carries case.Described x-ray source carries and comprises x ray generator in the case, micromotor, x-ray source ray exit is equipped with ray filtering plate and filtering plate switching device shifter on the casing of case carrying, described micromotor driving filtering plate switching device shifter is realized the switching to the ray filtering plate, thereby obtains the X ray of two kinds of different-energies.

Described projection camera bellows carries and comprises fluorescent probe in the case, digital camera, reflective mirror, video screen, video screen supporter and acquisition control module.Described video screen supporter is fixed on the box inside wall that the projection camera bellows carries case, is bonded with video screen on the video screen supporter; In the projection camera bellows carries the casing of case, have one with the angled reflective mirror of video screen, described reflective mirror is surperficial aluminizer reflective mirror, its reflective surface position is the video screen direction, on the casing roof above the reflective surface of reflective mirror digital camera and fluorescent probe are installed, reflective mirror and video screen angulation are injected in digital camera and the fluorescent probe for after the fluoroscopic image that is detected object that presents on the video screen can being reflected on the reflective surface of reflective mirror; Described acquisition control module is by image acquisition, fastethernet interface and system control three parts and form, being one is the software and hardware system of core with the embedded microcontroller, on the one hand, divide control hypograph collecting part to obtain image information at systems control division from digital camera, be sent to transport module by fastethernet interface, send computing machine to by transport module again; On the other hand, the control command of system control receiving computer transmits control command by transport module and carries micromotor in the case to x-ray source, regulates the filtering plate position by micromotor driving filtering plate switching device shifter.

Described controller carries transport module and computing machine in the case.Transport module is made up of image data transmission and radiographic source control command transmission two parts, and described image data transmission partly comprises fastethernet interface, wireless ethernet access device and wireless ethernet network interface card; The image data transmission part will be sent to computing machine in wireless or wired mode from the image information that acquisition control module is obtained.Described radiographic source control command hop comprises the control command scrambler, control command transmitter, control command receiver and control command code translator.The control signal that computing machine sends is sent to acquisition control module through transport module, acquisition control module is sent control signal to micromotor again, the encoded device coding of this signal, launch by transmitter, receive by receiver, pass through decoder for decoding again, finally control micromotor and drive the filtering plate switching device shifter.Computing machine is mainly finished system's control, material analysis, Flame Image Process, demonstration, storage and retrieval by FISCAN composite algorism software package.

The utility model volume little, be easy to carry transportation, flexible and convenient operation can the effective recognition explosives or organism such as drugs.

Description of drawings

Fig. 1 is the fundamental diagram of portable double energy X-ray detector;

Fig. 2 is that the projection camera bellows of portable double energy X-ray detector carries the box structure synoptic diagram;

Fig. 3 is the acquisition control module structure principle chart of portable double energy X-ray detector;

Fig. 4 is the transport module structure principle chart of portable double energy X-ray detector;

Fig. 5 is that the radiographic source of portable double energy X-ray detector carries the case synoptic diagram.

Among the figure:

The 1-X radiographic source carries case, and 2-is detected object, and 3-projection camera bellows carries case,

The 4-controller carries case, the 5-transport module, and the 6-computing machine, 7-projection camera bellows carries box body,

The 8-digital camera, the 9-fluorescent probe, 10-video screen supporter, the 11-video screen,

The 12-reflective mirror, the 13-acquisition control module, the 14-image acquisition, the 15-fastethernet interface,

The control of 16-system, 17-wireless ethernet access device, 18-wireless ethernet network interface card,

19-control command scrambler, 20-control command transmitter, 21-control command receiver,

22-control command code translator, the 23-X ray generator, 24-ray filtering plate,

25-filtering plate switching device shifter, the 26-micromotor.

Embodiment

Now structure of the present utility model and principle of work are described further in conjunction with Figure of description:

As accompanying

drawing

1,2,3,4, shown in 5, the utility model comprises that x-ray source carries case 1, the projection camera bellows carries case 3 and controller carries case 4.

Described x-ray source carries and comprises x ray generator 23 in the case 1, micromotor 26, carry at x-ray source that x-ray source ray exit is equipped with ray filtering plate 24 and filtering plate switching device shifter 25 on the casing of case 1, described micromotor 26 drives the switching that filtering plate switching device shifter 25 is realized ray filtering plate 24, thereby obtains the X ray of two kinds of different-energies.Described x-ray source both can have been selected the radiographic source of working in a continuous manner, also can select the radiographic source with pulse mode work, and radiogenic crest voltage is not strict with, and therefore can match flexibly according to user's request and inspected object character.

Described projection camera bellows carries and comprises fluorescent probe 9, digital camera 8, reflective mirror 12, video screen 11, video screen supporter 10 and acquisition control module 13 in the case 3.The inwall that described projection camera bellows carries case 3 is processed into the blackout delustring, to prevent penetrating of visible light.Described video screen supporter 10 is fixed on the box inside wall that the projection camera bellows carries case 3, is bonded with video screen 11 on video screen supporter 10.Described video screen 11 is scintillator video screens, is complementary with the spectrum of digital camera, is guaranteeing also have higher visible light conversion efficiency under the high-resolution condition.One reflective mirror 12 angled with video screen 11 in carrying the casing of case 3, the projection camera bellows arranged, described reflective mirror 12 is surperficial aluminizer reflective mirror, its reflective surface position is the video screen direction, its effect is to reduce the thickness that the projection camera bellows carries box body 7, and makes digital camera 8 shift out the radiation exposure field.Digital camera 8 and fluorescent probe 9 are installed on 7 roofs of the casing above the reflective surface of reflective mirror 12, reflective mirror 12 is injected in the digital camera 8 after the fluoroscopic image that is detected object 2 that presents on the video screen 11 can being reflected on the reflective surface of reflective mirror 12 with video screen 11 angulations, said herein fluorescent probe 9 also can be installed on video screen 11 back, and the imaging visual field that only need avoid digital camera 8 gets final product.Digital camera 8 adopts CCD as sensor devices, can be according to the difference of X ray energy, change the luminous sensitivity of camera in the mode that changes resolution, its shell is surrounded by the lead shield layer and prevents the influence of stray radiation to the CCD device, and camera lens adopts the varifocal wide-angle industrial lens of mega pixel level.Video screen 11, reflective mirror 12, digital camera 8 have constituted X ray to the visible images converting system.Fluorescent probe 9 is made up of photosensitive device, signal amplification circuit and the optically focused parts of high sensitivity, response fast, it surveys the visible light that video screen 12 sends, the output digital signal, its rising edge and negative edge determine the zero hour of digital camera 8 images acquired and stop constantly, thereby can be according to the integration time of the automatic control figure camera 8 of variation of video screen 11 brightness, not needing x ray generator is digital camera output accumulation control signal.Described acquisition control module 13 is by image acquisition 14, fastethernet interface 15 and system control 16 3 parts and form, being one is the software and hardware system of core with the embedded microcontroller, control hypograph collection 14 in system's control 16 is obtained image information from digital camera 8, be sent to transport module 5 by fastethernet interface 15, be sent to computing machine 6 again; And can receive the control command of the computing machine 6 that sends by transport module 5, control micromotor 26 driving filtering plate switching device shifters 25 and regulate filtering plate 24 positions.

Described controller carries transport module 5 and computing machine 6 in the case 4.Transport module 5 is made up of image data transmission and radiographic source control command transmission two parts, and described image data transmission partly comprises fastethernet interface 15, wireless ethernet access device 17 and wireless ethernet network interface card 18; The image data transmission part will be sent to computing machine 6 in wireless or wired mode from the image information that acquisition control module 13 is obtained.Described radiographic source control command transmission comprises control command scrambler 19, control command transmitter 20, control command receiver 21 and control command code translator 22.The control signal that computing machine 6 sends is sent to acquisition control module 13 through transport module 5, acquisition control module 13 is sent control signal to micromotor 26 again, encoded device 19 codings of this signal, by transmitter 20 emissions, receive by receiver 21, through code translator 22 decodings, finally control micromotor 26 and drive filtering plate switching device shifter 25 again.

Principle of work of the present utility model is as follows: at first, computing machine 6 will be ordered by transport module 5 and will be sent to acquisition control module 13, the micromotor 26 driving filtering plate switching device shifters 25 that system's control 16 control x-ray sources in the acquisition control module 13 carry in the case 1 place energy " " position with filtering plate 24, simultaneous computer 6 control x ray generators 23 are by pre-set exposure exposure, the X ray transillumination is detected object 2, and the fluoroscopic image of object 2 appears being detected on video screen 11, this fluoroscopic image is detected by fluorescent probe 9 after reflective mirror 12 reflections, gathers this fluoroscopic image thereby start digital camera 8.After exposure is finished, digital camera 8 is sent to transport module 5 with digital picture by acquisition control module 13, be transferred on the computing machine 6, computing machine 6 is handled according to FISCAN special software bag and is shown the fluoroscopy images that is detected object 2 different gray-levels, tentatively judges for the examiner again.

Then, under the control of computing machine 6, micromotor 26 drives filtering plate switching device shifter 25 filtering plate 24 is placed energy " two " position, carry case 1 not changing x-ray source, the projection camera bellows carries case 3 and is detected the position of object 2, and keep under the identical situation of exposure, exposure once more, a final new width of cloth fluoroscopy images that on computing machine 6, obtains being detected object 2, the material analysis software of FISCAN special software bag carries out material analysis and processing to above-mentioned priority two width of cloth digital pictures in the computing machine 6, calculate the equivalent atom ordinal number of various article, thereby distinguish organism, inorganics and potpourri, and when showing, give different colors.Usually, less than 10, then material is classified as organism, be shown as orange as the equivalent atom ordinal number; As the equivalent atom ordinal number is 10 to 17, then material is classified as potpourri, shown in green; Greater than 17, then material is classified as inorganics as the equivalent atom ordinal number, be shown as blueness; The object blocked up or density is excessive, owing to can not be penetrated by X ray, all shown in red.This shows,, then should give special attention, because explosive and drugs mostly are organism greatly when image in the computing machine is shown as when orange.

Claims

1. portable double energy X-ray detector, comprise that x-ray source carries case (1), the projection camera bellows carries case (3) and controller carries case (4), it is characterized in that described x-ray source carries comprises x ray generator (23) in the case (1), micromotor (26) carries at x-ray source that x-ray source ray exit is equipped with ray filtering plate (24) and filtering plate switching device shifter (25) on the casing of case (1);

Described projection camera bellows carries and comprises fluorescent probe (9) in the case (3), digital camera (8), reflective mirror (12), video screen (11), video screen supporter (10) and acquisition control module (13); Described video screen supporter (10) is fixed on the box inside wall that the projection camera bellows carries case (3), is bonded with video screen (11) on video screen supporter (10); In the projection camera bellows carries the casing of case (3), have one with the angled reflective mirror (12) of video screen (11), its reflective surface position is the video screen direction; On casing (7) roof above the reflective surface of reflective mirror (12), digital camera (8) and fluorescent probe (9) are installed; Described acquisition control module (13) is by image acquisition (14), fastethernet interface (15) and system's control (16) three parts are formed, gather (14) at the control hypograph of system's control (16) and obtain image information from digital camera (8), be sent to transport module (5) by fastethernet interface (15), be sent to computing machine (6) again; And can receive the control command of the computing machine (6) that sends by transport module (5), control micromotor (26) driving filtering plate switching device shifter (25) and regulate filtering plate (24) position;

Described controller carries transport module (5) and computing machine (6) in the case (4); Transport module (5) is made up of image data transmission and radiographic source control command transmission two parts, and described image data transmission partly comprises fastethernet interface (15), wireless ethernet access device (17) and wireless ethernet network interface card (18); The image data transmission part will be sent to computing machine (6) in wireless or wired mode from the image information that acquisition control module (13) obtain; Described radiographic source control command transmission comprises control command scrambler (19), control command transmitter (20), control command receiver (21) and control command code translator (22); The control signal that computing machine (6) sends is sent to acquisition control module (13) through transport module (5), acquisition control module (13) is sent control signal to micromotor (26) again, the encoded device of this signal (19) coding, launch by transmitter (20), receive by receiver (21), pass through code translator (22) decoding again, finally control micromotor (26) and drive filtering plate switching device shifter (25).

2. a kind of portable double energy X-ray detector as claimed in claim 1 is characterized in that the inwall that described projection camera bellows carries case (3) is processed into the blackout delustring.

3. a kind of portable double energy X-ray detector as claimed in claim 1 is characterized in that described reflective mirror (12) is surperficial aluminizer reflective mirror.

4. a kind of portable double energy X-ray detector as claimed in claim 1 is characterized in that reflective mirror (12) and video screen (11) angulation are to inject in the digital camera (8) after the fluoroscopic image that is detected object (2) that presents on the video screen (11) can being reflected on the reflective surface of reflective mirror (12).

5. a kind of portable double energy X-ray detector as claimed in claim 1 is characterized in that digital camera (8) shell is surrounded by the lead shield layer.

6. a kind of portable double energy X-ray detector as claimed in claim 1 is characterized in that fluorescent probe (9) is installed on video screen (11) back, is positioned at outside digital camera (8) visual field.