CN102901988B - A kind of inspection vehicle based on large fladellum compton backscattering scanning technique - Google Patents
A kind of inspection vehicle based on large fladellum compton backscattering scanning technique Download PDFInfo
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- CN102901988B CN102901988B CN201210367260.3A CN201210367260A CN102901988B CN 102901988 B CN102901988 B CN 102901988B CN 201210367260 A CN201210367260 A CN 201210367260A CN 102901988 B CN102901988 B CN 102901988B
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- ray
- inspection vehicle
- scattering detector
- collimating apparatus
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Abstract
The embodiment of the invention discloses a kind of inspection vehicle based on large fladellum compton backscattering scanning technique, comprise: a means of transport, one scanning measurement system and being positioned at described means of transport controls the control system of described scanning measurement system work, described scanning measurement system comprises: x-ray machine, scattering detector, front collimating apparatus, rear collimating apparatus and data acquisition system (DAS), wherein, described front collimating apparatus is mounted on the front end of described x-ray machine, described rear collimating apparatus is mounted on the front end of described scattering detector, described data acquisition system (DAS) is connected with described scattering detector and described control system respectively.Adopt the present invention, have easy for installation, safe and reliable, detect advantage rapid and with low cost.
Description
Technical field
The present invention relates to checkout equipment, particularly relate to a kind of inspection vehicle based on large fladellum compton backscattering scanning technique.
Background technology
In recent years, along with country sets up the execution of highway fresh and alive agricultural byproducts green channel policy, policy of reducing or remitting the expenses accordingly that various places government is also supporting, this policy of country is rooted in the hearts of the people, and achieves good social effect.But, also there is certain imperfection in current policy, lack relevant supplementary measures and operation guide, some lawless persons are more had to utilize this policy in policy enforcement procedure, by loading in mixture, false evidence, transfinite, the means such as overload, evade the expenses of taxation of country, make highway be subject to very large economic loss, also just deviate from the original intention of green channel policy Huinong Huimin.According to incompletely statistics, only Guangdong Province 1 year evade highway toll just up to more than 1,300,000,000 yuan, make the possessory interests of highway receive huge loss.
At present, to the technological means that the vehicular traffic transporting fresh and live agricultural product checks be: radar, ultrasonic technology, its subject matter is that penetration power is very weak, only can see the article of surface, compartment one deck, particularly can not pass metal, van and container car cannot be detected at all; Ray transmission imagery technology, its subject matter is: the first, involve great expense; The second, I class and II class gamma ray projector is adopted, such as the cobalt-60γray source of 100 Curie to 300 Curie, radiographic source security protection outstanding problem.Utilize the back scattering imaging technology of U.S.'s technology that " flies spot ", its subject matter is: the spot scan of pen type bundle, detection speed is slow.Meanwhile, current checkout equipment is fixed, and cost of investment is high.
Therefore, the checkout equipment that detectivity is strong, radiation dose is little, detection speed is fast and cost is low is the focus of research at present.
Summary of the invention
Embodiment of the present invention technical matters to be solved is, provides a kind of inspection vehicle based on large fladellum compton backscattering scanning technique.The problem that current detection perform is not good, security protection is bad, detection speed is slow and input cost is high can be solved
In order to solve the problems of the technologies described above, embodiments provide a kind of inspection vehicle based on large fladellum compton backscattering scanning technique, comprising:
One means of transport, one scanning measurement system and being positioned at described means of transport controls the control system of described scanning measurement system work, it is characterized in that, described scanning measurement system comprises: x-ray machine, scattering detector, front collimating apparatus, rear collimating apparatus and data acquisition system (DAS), wherein, described front collimating apparatus is mounted on the front end of described x-ray machine, described rear collimating apparatus is mounted on the front end of described scattering detector, and described data acquisition system (DAS) is connected with described scattering detector and described control system respectively; Described x-ray machine and described scattering detector are positioned at the same side, are equipped with an isolation stereotype between described x-ray machine and described scattering detector; Described means of transport comprises a closed casing, and the side of the contiguous described x-ray machine of described casing and described scattering detector has a transmission window.
Wherein, also comprise a radome, place described scanning measurement system in described radome, wherein, that closes on the side of described transmission window does not establish barricade.
Wherein, also comprise a crane, described crane is fixedly connected with the bottom of described scanning measurement system, for regulating the height of described scanning measurement system.
Wherein, also comprising a video monitoring system, for gathering the realtime graphic of outside vehicle to be measured, and described realtime graphic being sent to described control system.
Wherein, described control system comprises computer, and described control system is placed in the casing of described inspection vehicle.
Wherein, the base of described scanning measurement system is provided with pulley.
Wherein, a standby power supply is also comprised.
Implement the embodiment of the present invention, there is following beneficial effect:
Easy for installation, x-ray backward scattering checkout equipment radiographic source system and detector are positioned at the same side, facility compact, and Installation and Debugging are convenient; Be perfectly safe: x-ray backward scattering checkout equipment adopts spot scan principle, single checks that dosage is low especially, only penetrates the 1/10 even lower of emissive devices (cobalt-60 product); Flexible arrangement: green channel inspection vehicle can move whenever and wherever possible, relative to fixed checkout equipment, check point can be arranged flexibly, can control multiple import and export simultaneously.Have simultaneously and drop into into low and detect reliable advantage.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of inspection vehicle based on large fladellum compton backscattering scanning technique of the present invention;
Fig. 2 is the structural representation of scanning measurement system in this Fig. 1;
Fig. 3 is the operating diagram of scanning measurement system;
Fig. 4 is the structural representation of x-ray machine and front collimating apparatus in Fig. 2.
The parts that attached number in the figure represents are as follows:
1, x-ray machine
2, front collimating apparatus
3, the outgoing seam of x-ray launched by x-ray machine
4, rear collimating apparatus
5, scattering detector
6, the incidence seam of scattered x rays
7, data acquisition system (DAS)
8, low-tension supply
9, scattering detector shielding box
10, plumbous division board
11, mounting bracket
12, crane (scale with a scale)
13, the large fladellum of x-ray of vehicle to be detected is entered
14, the backward scattering bundle of inspection vehicle scanning measurement system is entered
15, scanning measurement system
16, scanning measurement system radome
17, control system
18, computing machine
19, operation keyboard
20, operator seat
21, power supply rack
22, standby power supply
23, video monitoring system
24, the headstock of inspection vehicle
25, inspection vehicle box side transmission window
26, inspection vehicle box bottom
27, the wheel of scanning measurement system radome
28, motor
29, air conditioner
30, means of transport
31, the car side board of examined car
32, the goods of examined car loading
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
See Fig. 1-Fig. 4, for a kind of structural representation of inspection vehicle based on large fladellum compton backscattering scanning technique of the present invention and the structural representation of local device, inspection vehicle comprises means of transport 30, scanning measurement system 15 and control system 17, means of transport 30 is provided with the casing of a sealing, control system 17 and scanning measurement system 15 are placed in the casing of inspection vehicle, casing has transmission window 25 near the side of measuring vehicle, also comprise video monitoring system 23 in casing simultaneously, standby power supply 22, power supply rack 21 and air conditioner 29, wherein scanning measurement system comprises x-ray machine 1, front collimating apparatus 2, rear collimating apparatus 4, scattering detector 5 and data acquisition system (DAS) 7, preferably, radome 16 is also provided with outside scanning measurement system 15, a small amount of x-ray that radome 16 is revealed for shielding x-ray machine, avoid damaging operator, radome does not establish barricade near the one side of transmission window 25, radome is fixedly mounted on mounting bracket 11, control mounting bracket 11 by motor 28 to slide up and down along crane 12, wherein crane 12 is provided with graduated scale, the height of scanning measurement system 15 can be measured, mounting bracket 11 is also provided with the wheel 27 that can brake.Front collimating apparatus 2 is mounted on the front end of x-ray machine 1, and rear collimating apparatus 4 is mounted on the front end of scattering detector 5, and data acquisition system (DAS) 7 is connected with scattering detector 5 and control system 17 respectively; X-ray machine 1 and scattering detector 5 are positioned at the same side, are equipped with an isolation stereotype 10 between x-ray machine 1 and scattering detector 5, and the interference between the x-ray of effectively isolation transmitting and scattered ray, avoids impacting measurement result.
The course of work is: utilize suitable middle low energy x-ray scanning checked property, receiving by the x-ray of checked property scattering with the high efficiency scattering detector of x-ray machine same lateral position preset direction and preset distance place, obtain scattered light subnumber, by data processing and reconstruction, draw the eigenwerts such as the mass density of the electron density distribution of checked property, two-dimentional Density Distribution and examined material, effective atomic number and relative percentage content, thus determine whether fresh and live agricultural product uniquely.Also by the autonomous identification database created, by automatically contrasting indices, can automatically differentiate whether be fresh and live agricultural product.
Testing staff on operator seat 20 is connected the power supply 21 of power supply rack and is judged the height of detected vehicle car side plate 15 by video monitoring system 23, fixed after being with the crane 12 of altitude scale to arrive predetermined altitude by motor 28 drive installation support 11, by computing machine 18 and operation keyboard 19, run scanning measurement system 15, inspection vehicle 30 travel to parallel with the car side board 31 of tested measuring car and near time, the goods 32 of scanning measurement system 15 to tested measuring car car side board inside of inspection vehicle 30 carries out scanning survey.If the detected excessive height of car side board 31 or the excessive height of lade 32, be then increased to suitable height by the mounting bracket 11 of scanning measurement system 15 along crane 12 by motor 28, to obtain all images information of lade 32.
The concrete course of work of scanning measurement system is:
X-ray machine by front collimating apparatus 2 launch one there is predetermined thickness carry out continuous sweep with fan-shaped X-ray 13 pairs of lades of predetermined angular, in the present embodiment, the shape of front collimating apparatus 2 is a triangle, centre is provided with long and narrow gap, x-ray is launched from this gap, during concrete enforcement, the shape of front collimating apparatus 2 is not restricted.
X-ray is radiated at and diffuse reflection occurs lade and forms scattered ray 14, the scattering detector 5 with rear collimating apparatus 4 high by the detection efficiency being positioned at x-ray machine 1 homonymy preset bearing receives, when the lorry of lade moves, this fan-shaped x-ray bundle continuously sweeps lade with regard to one piece of area, one piece of area.Scattering detector 5(is such as oxidized Gadolinium and Dianization Cesium adds photodiode), convert the scattered ray received to electric signal and be sent to data acquisition system (DAS) 7, be also provided with shielding box 9 outside data acquisition system (DAS) 7, avoid interference.Be sent to control system 17 after data acquisition system (DAS) 7 pairs of electric signal carry out time sharing sampling, control system 17 generates the image of lade and every detected parameters.
Implement embodiments of the invention, have easy for installation, safe and reliable, detect advantage rapid and with low cost, x-ray backward scattering checkout equipment radiographic source system and detector are positioned at the same side, facility compact, and Installation and Debugging are convenient.
One of ordinary skill in the art will appreciate that all or part of flow process realized in above-described embodiment method, that the hardware that can carry out instruction relevant by computer program has come, described program can be stored in a computer read/write memory medium, this program, when performing, can comprise the flow process of the embodiment as above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-OnlyMemory, ROM) or random store-memory body (RandomAccessMemory, RAM) etc.
Above disclosedly be only a kind of preferred embodiment of the present invention, certainly the interest field of the present invention can not be limited with this, one of ordinary skill in the art will appreciate that all or part of flow process realizing above-described embodiment, and according to the equivalent variations that the claims in the present invention are done, still belong to the scope that invention is contained.
Claims (8)
1. the inspection vehicle based on large fladellum compton backscattering scanning technique, comprise: a means of transport, one scanning measurement system and being positioned at described means of transport controls the control system of described scanning measurement system work, it is characterized in that, described scanning measurement system comprises: x-ray machine, scattering detector, front collimating apparatus, rear collimating apparatus and data acquisition system (DAS), wherein, described front collimating apparatus is mounted on the front end of described x-ray machine, described rear collimating apparatus is mounted on the front end of described scattering detector, described data acquisition system (DAS) is connected with described scattering detector and described control system respectively, described x-ray machine and described scattering detector are positioned at the same side, are equipped with an isolation stereotype between described x-ray machine and described scattering detector, described means of transport comprises a closed casing,
The x-ray that described x-ray machine sends forms fan-shaped x-ray by described front collimating apparatus, described fan-shaped x-ray is radiated on article to be measured by the gap in described front collimating apparatus and forms scattered ray, described scattered ray collimating apparatus after described is detected by described scattering detector, described scattering detector converts the described scattered ray detected to electric signal and is sent to described data acquisition system (DAS), described data acquisition system (DAS) is sent to described control system after carrying out time sharing sampling to described electric signal, with the image making described control system generate article to be measured; Wherein, described scattering detector receives the x-ray by described article scattering to be measured, obtain scattered light subnumber, by data processing and reconstruction, draw the eigenwert comprising electron density distribution, two-dimentional Density Distribution, mass density, effective atomic number and relative percentage content of described article to be measured, contrasted by indices in institute's eigenwert and identification database, whether article to be measured described in automatic decision are fresh and live agricultural product.
2. inspection vehicle as claimed in claim 1, it is characterized in that, described scanning measurement system outside is also provided with a radome, a small amount of x-ray that described radome is revealed for shielding described x-ray machine, wherein, that closes on the side of described transmission window does not establish barricade.
3. inspection vehicle as claimed in claim 2, it is characterized in that, also comprise a crane, described crane is fixedly connected with the bottom of described scanning measurement system, for regulating the height of described scanning measurement system.
4. inspection vehicle as claimed in claim 3, it is characterized in that, described crane is provided with scale, and is raised by motor drive installation support or reduce.
5. inspection vehicle as claimed in claim 4, is characterized in that, also comprises a video monitoring system, for gathering the realtime graphic of outside vehicle to be measured, and described realtime graphic being sent to described control system.
6. inspection vehicle as claimed in claim 5, it is characterized in that, described control system comprises computer, and described control system is placed in the casing of described inspection vehicle.
7. inspection vehicle as claimed in claim 6, it is characterized in that, the base of described scanning measurement system is provided with pulley.
8. the inspection vehicle as described in any one of claim 1-7, is characterized in that, also comprises a standby power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210367260.3A CN102901988B (en) | 2012-09-28 | 2012-09-28 | A kind of inspection vehicle based on large fladellum compton backscattering scanning technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210367260.3A CN102901988B (en) | 2012-09-28 | 2012-09-28 | A kind of inspection vehicle based on large fladellum compton backscattering scanning technique |
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| Publication Number | Publication Date |
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| CN102901988A CN102901988A (en) | 2013-01-30 |
| CN102901988B true CN102901988B (en) | 2016-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210367260.3A Expired - Fee Related CN102901988B (en) | 2012-09-28 | 2012-09-28 | A kind of inspection vehicle based on large fladellum compton backscattering scanning technique |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106526688A (en) * | 2016-12-28 | 2017-03-22 | 同方威视技术股份有限公司 | Back scattering inspection vehicle |
| CN106901771B (en) * | 2017-03-14 | 2020-03-13 | 丁厚本 | Ray compton back scattering CT scanning head and CT scanner |
| CN108508049B (en) * | 2018-02-08 | 2021-03-26 | 同济大学 | Mobile car chassis security inspection device based on X-ray backscattering |
| CN109521482B (en) * | 2019-01-04 | 2024-03-01 | 同方威视技术股份有限公司 | Mobile inspection system and inspection method |
| WO2021185239A1 (en) * | 2020-03-19 | 2021-09-23 | 清华大学 | Back-scatter scanning system |
| CN114354656B (en) * | 2021-12-07 | 2023-12-12 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | System-level sample testing system |
| CN115291287A (en) * | 2022-09-29 | 2022-11-04 | 北京紫方启研科技有限公司 | Vehicle-mounted security inspection system |
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| CN101571497A (en) * | 2008-04-29 | 2009-11-04 | 同方威视技术股份有限公司 | Detecting equipment |
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Patent Citations (5)
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| CN1779451A (en) * | 2004-11-26 | 2006-05-31 | 清华大学 | Back scattering safety inspection and inspector for liquid by radioactive resource |
| CN101329285A (en) * | 2007-06-20 | 2008-12-24 | 沈阳华德汽车贸易有限公司 | Vehicle mounted checking system of cobalt-60 container |
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