CN201199235Y - Novel X-ray channel type safety-check system structure - Google Patents
Novel X-ray channel type safety-check system structure Download PDFInfo
- Publication number
- CN201199235Y CN201199235Y CNU200820116180XU CN200820116180U CN201199235Y CN 201199235 Y CN201199235 Y CN 201199235Y CN U200820116180X U CNU200820116180X U CN U200820116180XU CN 200820116180 U CN200820116180 U CN 200820116180U CN 201199235 Y CN201199235 Y CN 201199235Y
- Authority
- CN
- China
- Prior art keywords
- ray
- channel
- production apparatus
- passage
- ray production
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
The utility model discloses a novel structure of an X-ray channel-type safety inspection system, which is provided with three X-ray apparatuses and a front collimator thereof, four linear detector arrays and a rear collimator array thereof, a conveyer-belt device, a frame work, a radiation shield and the like. A DR part of a digital radiogram geometry is formed by the linear detector arrays installed at one side and the lower side of a channel and one X-ray apparatus arranged at the upper side of the channel. A CBS part of a Compton scattering geometry is formed by the linear detector arrays arranged at the left side and the right side of the channel and one X-ray apparatus arranged at the lower side of the channel. A certain distance is available between the DR part and the CBS part. The X-ray channel-type security inspection system has high detecting efficiency, advanced and perfect functions, high image quality, good radiation safety and high performance-price ratio, and can detect not only prohibited metal articles but also explosive/ narcotic drugs/ inflammable and explosive articles, thus being fully applicable to on-site safety inspection.
Description
Technical field
The utility model relates to a kind of X ray channel-type safety check system, more specifically say so a kind of structure of novel channel-type screening machine, utilize the digitizing radiography of X ray to detect the metal contraband goods, utilize the compton backscattering scanning technique in X ray and the matter interaction to detect explosive/drugs/inflammable explosive article.This system is widely used in airport, station, harbour, customs, large stadium and some important place.
Background technology
At present, many companies production and sales X ray channel-type safety check system is arranged both at home and abroad, captured the quite most of of domestic and international market.Three type systematics are roughly arranged:
The first kind is based on the digitizing radiography (DR-Digital Radiography) of X ray, it relatively is applicable to and detects high atomic number (Z) material (as metal) on principle, and poor to low atomic number material recognition capability, even with the DR of dual intensity.
Second class is based on the compton backscattering technology (CBS-Compton BackscatterScanning) of X ray, but all is to utilize " flying spot " (fly spot) and chopper wheel method.In fact, the effect of this method is also not obvious in decades.Use the channel-type screening machine by this method manufacturing not detect explosive during U.S.'s Atlanta Olympic Games, the result causes on-the-spot blast.
The 3rd class is based on computed tomography imaging (CT) technology of X ray, and it is more suitable for being about 1 meter detection passenger checked baggage bag in channel size, but detection speed is slower, the cost costliness, for example:
(1) the CTX9000 DSi baggage screening system of AM General intelligence Science and Technology Ltd. production, the about 1,000,000 dollars/platform of price.
(2) eXaminer of L-3 Communications Security and Detection Systems company production
Explosives Detection System, with 3～4 fixing X-ray production apparatus, 6048 detectors, the about 1,050,000 dollars/platform of price; The baggage screening system that the MVT-HR high resolving power is checked, with 4 x-ray sources independently, 3 * 960 detectors, price is about 400,000 dollars/platform.
Strictly speaking, x-ray ct technology still is based on the X ray transmission absorption and measures, and is low for low atomic number material detection sensitivity.
More than first and second class channel-type safety check system all be difficult to the on-the-spot explosive detection problem that solves.Helplessly, although the 3rd class safety check system costs an arm and a leg, China's import in this year tens of, spent a large amount of foreign exchanges.
The 4th class is the model machine that Chinese utility model patent: ZL97247727.6 " desk-top explosive/drugs signal detecting device " succeeded in developing in 2003, except almost absolutely detecting the metal, can also detect following contraband goods: native explosive 〉=60 grams, TNT 〉=30 grams, slurry explosives 〉=25 grams, gasoline 〉=100ml, little firecrackers 500 sound etc., and passed through national evaluation.But, be gamma ray projector owing to what used at that time, so directly influenced popularization.
The utility model content
The purpose of this utility model provide P/C than high, use x-ray source, function advanced perfect, that radsafe is good, picture quality is good, can really detect explosive and inflammable explosive article, be convenient to the on-the-spot New X ray channel formula safe examination system structure of using.
The technical solution of the utility model is as follows:
New X ray channel formula safe examination system structure, include passage, feed belt is arranged at the bottom, there is bottom lining plate the feed belt below, channel roof one side is equipped with X-ray production apparatus and preceding collimating apparatus thereof, the passage bottom lining plate and with the X-ray production apparatus opposing sideplates on be separately installed with line detector row and collimator array thereafter, constitute digital X radiography geometry structure with the X-ray production apparatus at top; It is characterized in that described channel roof and passage bottom lining plate centre position are separately installed with X-ray production apparatus and preceding collimating apparatus thereof, be separately installed with linear detector array and collimator array thereafter on the and arranged on left and right sides plate of passage, with on channel roof and the passage bottom lining plate X-ray production apparatus formation compton backscattering geometry structure; Between described compton backscattering geometry structure and the digital X radiography geometry structure interference distance that can avoid between the two is arranged; The bundle mouth that goes out of each X-ray production apparatus all faces toward passage, and the sensitive volume of each line detector is all towards passage.
In the described digital X radiography geometry structure, X-ray production apparatus is one, is installed in the right side of channel roof, is separately installed with the line detector row on passage bottom lining plate and the left plate relative with digital X-ray unit and reaches collimator array thereafter; In compton backscattering geometry structure, described channel roof and passage bottom lining plate centre position are separately installed with an X-ray production apparatus.
The preceding collimating apparatus of the X ray of described each X-ray production apparatus emission by separately forms the plane fladellum of segment angle 〉=60 °.
The top of passage and bottom lining plate and and arranged on left and right sides plate all need opened long slit with described fan-shaped plan X-ray beam intersection, so that X-ray beam is not subjected to any receiving end that arrives each line detector with stopping.
The back collimating apparatus in each detector the place ahead and shielding make X ray impinge perpendicularly on each detector sensitive volume end face.
Described each linear detector array adopts multichannel cesium iodide or sodium iodide scintillation crystal and silicon photoelectric diode, or other photomultiplier.
The utility model uses 3 X-ray production apparatus and preceding accurate device thereof, and the top of passage is settled 2, settled 1 at the passage bottom lining plate, and the screening machine very big for channel width can increase x-ray source.Respectively settle 1 linear detector array to reach collimator array thereafter at top, bottom lining plate and the left and right sides plate of passage.Wherein two linear detector arrays on passage left plate and the bottom lining plate constitute digital X radiography geometry structure (being called the DR part) with 1 X-ray production apparatus that is positioned at the channel roof right side; The linear detector array of left and right sides plate positioned vertical and other 2 X-ray production apparatus constitute Compton scattering geometry structure (being called the CBS part).These two parts need have certain interval, and are noiseless each other.
Major technique feature of the present utility model is:
1, the X ray of the X-ray production apparatus emission adopted of the utility model forms the plane fladellum of segment angle 〉=60 ° by preceding collimating apparatus.
2, four linear array detector arrays of the utility model employing are multichannel cesium iodide (CsI (T1)) scintillation crystal and silicon photoelectric diode, and wherein the linear array detector array on the passage biside plate also can adopt multichannel sodium iodide (NaI (T1)) scintillation crystal and photomultiplier.
3, adopting the biography electronic system mainly is made up of prime amplifier, main amplifier, analog signal conditioner circuit, multidiameter option switch, analog to digital converter ADC, programmable gate array (FPGA) control processing circuit, embedded system, interface circuit, power supply etc.
4, use programmable gate array FPGA (or digital signal processor DSP) and embedded system (ARM10) to replace PC or industrial computer.The advantage of this embedded type main control system is that volume is little, low in energy consumption, cost is low, reliability is higher, maintenance is easy.
5, the utility model is except being undertaken the data communication by Ethernet and other system, also use wireless image transmission system and portable terminal (for example mobile phone), so that about the authoritative expert with lead real-time monitored ruuning situation whenever and wherever possible, analyze difficult image.
The utility model has the advantages that:
(1) both can utilize digitized sciagraphy to detect the metal contraband goods, can utilize X ray Compton scattering technology for detection explosive/drugs/inflammable explosive article again.
(2) radiation field is more even, detects no dead angle.Detected luggage case and bag both can stand on end, and can crouch again is placed on the travelling belt of passage.
(3) the function advanced person is perfect.Except detecting the metal contraband goods automatically, can also detect the light materials of violating a ban of various forms automatically, such as solid-state, powdery and liquid explosive/drugs, inflammable explosive article, for example gasoline, alcohol, acetone, banana oil, various acid, alkali, match, firecrackers, cosmetics etc.
(4) software function is powerful, clear picture.
(5) highly sensitive, good resolution.
(6) detection speed is fast.
(7) long-play good stability.
(8) both can carry out data communication, can use wireless image transmission system and portable terminal (for example mobile phone) again by network and other system.
(9) P/C is than high.
Description of drawings
Fig. 1 is the utility model general structure synoptic diagram (side-looking).
Fig. 2 is the utility model DR part-structure synoptic diagram.
Fig. 3 is the utility model CBS part-structure synoptic diagram.
Fig. 4 surveys for the utility model and adopts the biography system block diagram.
The parts that label among the figure is represented are as follows:
1, is positioned at the 1st X-ray production apparatus on channel roof right side
2, be positioned at the 1st linear detector array on the passage left plate
3, be positioned at the 2nd linear detector array on the passage bottom lining plate
4, be positioned at the 2nd middle X-ray production apparatus of channel roof
5, be positioned at the 3rd X-ray production apparatus on the passage bottom lining plate
6, be positioned at the 3rd linear detector array on the passage left plate
7, be positioned at the 4th linear detector array on the passage right plate
8, frame
9, feed belt
10, the underboarding of feed belt below
11, motorized pulleys
12, cylinder
13, epipleural
14, the preceding collimating apparatus of the 1st X-ray production apparatus
15, fan-shaped plan X beam
16, the preceding collimating apparatus of the 2nd X-ray production apparatus
17, the preceding collimating apparatus of the 3rd X-ray production apparatus
18, X ray
19, the back collimator array of the 1st linear detector array
20, linear detector array
21, prime amplifier
22, main amplifier
23, analog signal processing
24, multidiameter option switch
25, analog to digital converter ADC
26, programmable gate array FPGA or digital signal processor DSP
27, embedded system
28, interface circuit
29, liquid crystal display displays image
30, GPRS communication module
31, mobile phone, display image and control
32, wired network adapter
33, motor control module
34, Dc low voltage power supply
35, detected case and bag
36, travelling belt machine inlet
37, travelling belt machine outlet
38, DR zone
39, CBS zone
40, the back collimator array of the 2nd linear detector array
41, the back collimator array of the 3rd linear detector array
42, the back collimator array of the 4th linear detector array
43, the X-ray beam of the 1st X-ray production apparatus emission
44, the X-ray beam of the 2nd X-ray production apparatus emission
45, passage right plate DR head of district slit
46, the X-ray beam of the 3rd X-ray production apparatus emission
47, passage right plate CBS head of district slit
48, passage left plate CBS head of district slit
Embodiment:
Referring to Fig. 1, when tested case and bag 35 are placed on the feed belt 9 of travelling belt machine inlet 36, electric drum 11 is sent to DR zone 38 with tested case and bag 35, by the 1st X-ray production apparatus 1 and linear detector array 2,3 it is carried out X-ray radiography (DR) scanning, then be sent to CBS zone 39, by the 2nd, the 3rd X-ray production apparatus 4,5 and linear detector array 6,7 it is carried out CBS scanning, send by travelling belt machine outlet 37 at last.
Referring to Fig. 2, the 1st X-ray production apparatus 1 and its preceding collimating apparatus 14 are installed in an end of passage epipleural 13 sideling, the X ray 43 that penetrates after the start passes tested case and bag 35 back parts and also arrives linear detector arrays 2 by back collimator array 19 through the long slit 45 of passage right plate, and another part also arrives the linear detector array 3 of downsides by back collimator array 40 through passage bottom lining plate 10 long slits.
Referring to Fig. 3, the 2nd X-ray production apparatus 4 and preceding collimating apparatus 16 thereof are installed in the central authorities outside of passage epipleural 13, exit portal vertically downward, the 3rd X-ray production apparatus 5 and preceding collimating apparatus 17 thereof are installed in the central authorities below of passage bottom lining plate 10, exit portal vertically upward.After the start, the scattered-out beam that the 2nd and the 3rd two the formed plane of X-ray production apparatus fan-shaped x-ray beams 44 and 46 produce when passing tested case and bag 35 is respectively through the long slit 47,48 of passage biside plate and by back collimator array 41,42 arrival linear detector arrays 6 and 7.
Referring to Fig. 4, X ray 18 (or 43 or 44 or 46) enters linear detector array 20 (or 2 or 3 or 6 or 7) by back collimator array 19 (or 40 or 41 or 42), the signal that each detector produced is sent into analog signal processing circuit 23 through the prime amplifier 21 and main amplifier 22 processing on each road, pass through multidiameter option switch 24 again, arrive the analog to digital converter 25 of high-speed, high precision, be defeated by programmable gate array FPGA (or digital signal processor) 26 after each road simulating signal all is converted to digital signal, finish multi-channel pulse analysis, and in the inner amplitude of monitor signal in real time of FPGA, pulsewidth, pulse energy, filtering does not meet the pulse of standard, counts satisfactory pulse then and preserves in storer.Send embedded system (ARM10) 27 to by private bus again, by embedded system 27 the data run related algorithm that obtains is finished imaging and warning function, give LCD 29 display images by interface circuit 28 at last, or image signal radio is transferred to terminal device (mobile phone) 31 by communication module (GPRS) 30, or be sent to network by wired network adapter 32, maybe instruction is passed to motor control module 33, the operation of control travelling belt machine.
Claims (6)
1. New X ray channel formula safe examination system structure, include passage, feed belt is arranged at the bottom, there is bottom lining plate the feed belt below, channel roof one side is equipped with X-ray production apparatus and preceding collimating apparatus thereof, the passage bottom lining plate and with the X-ray production apparatus opposing sideplates on be separately installed with line detector row and collimator array thereafter, constitute digital X radiography geometry structure with the X-ray production apparatus at top; It is characterized in that described channel roof and passage bottom lining plate centre position are separately installed with X-ray production apparatus and preceding collimating apparatus thereof, be separately installed with linear detector array and collimator array thereafter on the and arranged on left and right sides plate of passage, with on channel roof and the passage bottom lining plate X-ray production apparatus formation compton backscattering geometry structure; Between described compton backscattering geometry structure and the digital X radiography geometry structure interference distance that can avoid between the two is arranged; The bundle mouth that goes out of each X-ray production apparatus all faces toward passage, and the sensitive volume of each line detector is all towards passage.
2. New X ray channel formula safe examination system structure according to claim 1, it is characterized in that in the described digital X radiography geometry structure, X-ray production apparatus is one, be installed in the right side of channel roof, be separately installed with the line detector row on passage bottom lining plate and the left plate relative and reach collimator array thereafter with X-ray production apparatus; In compton backscattering geometry structure, described channel roof and passage bottom lining plate centre position are separately installed with an X-ray production apparatus.
3. New X ray channel formula safe examination system structure according to claim 1, the X ray that it is characterized in that described each X-ray production apparatus emission preceding collimating apparatus by separately forms the plane fladellum of segment angle 〉=60 °.
4. the structure of novel channel-type safe examination system according to claim 1, it is characterized in that the top of passage and bottom lining plate and and arranged on left and right sides plate all need open long slit with described fan-shaped plan X-ray beam intersection, so that X-ray beam is not subjected to any receiving end that arrives each line detector with stopping.
5. the structure of novel channel-type safe examination system according to claim 1 is characterized in that the back collimating apparatus in each detector the place ahead and shielding make X ray impinge perpendicularly on each detector sensitive volume end face.
6. the structure of novel channel-type safe examination system according to claim 1 is characterized in that described each linear detector array, adopts cesium iodide or sodium iodide scintillation crystal and silicon photoelectric diode, or other photomultiplier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820116180XU CN201199235Y (en) | 2008-05-12 | 2008-05-12 | Novel X-ray channel type safety-check system structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820116180XU CN201199235Y (en) | 2008-05-12 | 2008-05-12 | Novel X-ray channel type safety-check system structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201199235Y true CN201199235Y (en) | 2009-02-25 |
Family
ID=40450389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820116180XU Expired - Fee Related CN201199235Y (en) | 2008-05-12 | 2008-05-12 | Novel X-ray channel type safety-check system structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201199235Y (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858989A (en) * | 2010-05-25 | 2010-10-13 | 深圳黎明镒清图像技术有限公司 | Ultra-low-dose X-ray human body security inspection system with double exchange platforms |
| CN101887131A (en) * | 2009-05-13 | 2010-11-17 | 株式会社石田 | X ray checking device |
| CN102183533A (en) * | 2011-05-24 | 2011-09-14 | 深圳市鑫源通电子有限公司 | Channel type X-ray safety check method and device |
| CN102360083A (en) * | 2011-08-19 | 2012-02-22 | 上海高晶影像科技有限公司 | Method for removing belt artifacts in images for line scanning X-ray security inspection equipment |
| CN103064127A (en) * | 2013-01-04 | 2013-04-24 | 合肥希贝爱斯光电科技有限公司 | Digitization radiography (DR) and liquid spot (LS) and Compton back scattering (CBS) compound type X-ray passageway type security inspection device |
| WO2015096785A1 (en) * | 2013-12-26 | 2015-07-02 | 清华大学 | Ct system and method therefor |
| CN104792805A (en) * | 2015-04-16 | 2015-07-22 | 中国原子能科学研究院 | Transmission detector and interpolation data calculation method |
| CN104808252A (en) * | 2015-04-27 | 2015-07-29 | 成都中兢伟奇科技有限责任公司 | Monitoring device for X-ray object perspective of railway security checking |
| CN104936366A (en) * | 2015-06-03 | 2015-09-23 | 合肥泰禾光电科技股份有限公司 | Optical path restriction slit structure for preventing X ray leakage and improving imaging quality |
| CN107300367A (en) * | 2017-08-23 | 2017-10-27 | 西安近代化学研究所 | A kind of propellant powder companding shaping medicinal strip dimension measurement method |
| CN108648262A (en) * | 2012-12-27 | 2018-10-12 | 同方威视技术股份有限公司 | The three-dimensional Enhancement Method and equipment of back scattering human body check image |
| CN109239795A (en) * | 2018-07-31 | 2019-01-18 | 苏州奥腾电子科技有限公司 | Safety check automated induction systems and its bootstrap technique |
| CN110036283A (en) * | 2017-08-18 | 2019-07-19 | 富士电机株式会社 | X-ray inspection system and X-ray reception device |
| CN111856603A (en) * | 2020-07-23 | 2020-10-30 | 北京永新医疗设备有限公司 | Gate device and control method thereof |
-
2008
- 2008-05-12 CN CNU200820116180XU patent/CN201199235Y/en not_active Expired - Fee Related
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101887131A (en) * | 2009-05-13 | 2010-11-17 | 株式会社石田 | X ray checking device |
| CN101887131B (en) * | 2009-05-13 | 2013-05-08 | 株式会社石田 | X-ray inspection device |
| CN101858989B (en) * | 2010-05-25 | 2012-09-19 | 深圳黎明镒清图像技术有限公司 | Ultra-low-dose X-ray human body security inspection system with double exchange platforms |
| CN101858989A (en) * | 2010-05-25 | 2010-10-13 | 深圳黎明镒清图像技术有限公司 | Ultra-low-dose X-ray human body security inspection system with double exchange platforms |
| CN102183533A (en) * | 2011-05-24 | 2011-09-14 | 深圳市鑫源通电子有限公司 | Channel type X-ray safety check method and device |
| CN102183533B (en) * | 2011-05-24 | 2013-04-24 | 深圳市鑫源通电子有限公司 | Channel type X-ray safety check method and device |
| CN102360083A (en) * | 2011-08-19 | 2012-02-22 | 上海高晶影像科技有限公司 | Method for removing belt artifacts in images for line scanning X-ray security inspection equipment |
| CN108648262A (en) * | 2012-12-27 | 2018-10-12 | 同方威视技术股份有限公司 | The three-dimensional Enhancement Method and equipment of back scattering human body check image |
| CN108648262B (en) * | 2012-12-27 | 2021-04-13 | 同方威视技术股份有限公司 | Three-dimensional enhancement method and apparatus for backscatter human inspection images |
| CN103064127A (en) * | 2013-01-04 | 2013-04-24 | 合肥希贝爱斯光电科技有限公司 | Digitization radiography (DR) and liquid spot (LS) and Compton back scattering (CBS) compound type X-ray passageway type security inspection device |
| WO2015096785A1 (en) * | 2013-12-26 | 2015-07-02 | 清华大学 | Ct system and method therefor |
| CN104792805B (en) * | 2015-04-16 | 2017-09-12 | 中国原子能科学研究院 | A kind of transmission detectors and interpolated data computational methods |
| CN104792805A (en) * | 2015-04-16 | 2015-07-22 | 中国原子能科学研究院 | Transmission detector and interpolation data calculation method |
| CN104808252A (en) * | 2015-04-27 | 2015-07-29 | 成都中兢伟奇科技有限责任公司 | Monitoring device for X-ray object perspective of railway security checking |
| CN104936366A (en) * | 2015-06-03 | 2015-09-23 | 合肥泰禾光电科技股份有限公司 | Optical path restriction slit structure for preventing X ray leakage and improving imaging quality |
| CN110036283A (en) * | 2017-08-18 | 2019-07-19 | 富士电机株式会社 | X-ray inspection system and X-ray reception device |
| CN107300367A (en) * | 2017-08-23 | 2017-10-27 | 西安近代化学研究所 | A kind of propellant powder companding shaping medicinal strip dimension measurement method |
| CN109239795A (en) * | 2018-07-31 | 2019-01-18 | 苏州奥腾电子科技有限公司 | Safety check automated induction systems and its bootstrap technique |
| CN111856603A (en) * | 2020-07-23 | 2020-10-30 | 北京永新医疗设备有限公司 | Gate device and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201199235Y (en) | Novel X-ray channel type safety-check system structure | |
| US20180328861A1 (en) | Radiation Threat Detection | |
| CN102707324B (en) | Backscatter and transmission combined safety detector of X rays | |
| CN1779444B (en) | Safety CT inspector for liquid by ray resource | |
| CN102914555B (en) | Unisource X-ray transmission and compton scattering security check device in L-shaped structure | |
| CN102183533B (en) | Channel type X-ray safety check method and device | |
| CN202119732U (en) | Channel type X-ray security inspector | |
| US20040179647A1 (en) | Contain inspection system using cobalt-60 gamma-ray source and cesium iodide or cadmium tungstate array detector | |
| CN202994690U (en) | Single-source X-ray transmission and Compton scattering security check device in L-shaped structure | |
| CN105807328A (en) | Detecting system and method based on back scattering imaging | |
| CN103018263A (en) | DR (Digital Radiography) and LS (Liquid Security) composite X-ray channel type security inspection machine | |
| CN205670194U (en) | Detecting system based on back scattering imaging | |
| CN101349657A (en) | Passenger car radiation imaging detection system | |
| CN1164928C (en) | Detecting method and equipment for X-or gamma-radiation imaging | |
| CN103064127A (en) | Digitization radiography (DR) and liquid spot (LS) and Compton back scattering (CBS) compound type X-ray passageway type security inspection device | |
| CN202870001U (en) | U-shaped unisource X-ray transmission and compton scattering safety inspection device | |
| CN103018782B (en) | Single source low energy X ray backward scattering and transmission human body detecting device | |
| CN201421439Y (en) | Multi-energy X-ray security inspection machine | |
| CN1723388A (en) | Radiographic equipment | |
| CN202854352U (en) | X-ray backscattering and transmission combined type safety detector | |
| CN203275670U (en) | Inspection vehicle based on large fanned-beam Compton back scattering scanning technology | |
| CN103995015A (en) | Explosive detection device | |
| CN202870002U (en) | Double-source X-ray transmission and back scattering security detection device | |
| RU114369U1 (en) | PORTABLE DEVICE FOR IDENTIFICATION OF HIDDEN SUBSTANCES (OPTIONS) | |
| CN107797155A (en) | Compton backscattering detection means |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090225 Termination date: 20110512 |