CN111856602A - Double-source double-visual-angle passenger car rapid inspection device - Google Patents
Double-source double-visual-angle passenger car rapid inspection device Download PDFInfo
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- CN111856602A CN111856602A CN202010712246.7A CN202010712246A CN111856602A CN 111856602 A CN111856602 A CN 111856602A CN 202010712246 A CN202010712246 A CN 202010712246A CN 111856602 A CN111856602 A CN 111856602A
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- 238000007689 inspection Methods 0.000 title claims abstract description 42
- 238000001514 detection method Methods 0.000 claims abstract description 60
- 230000002285 radioactive effect Effects 0.000 claims abstract description 34
- 230000005855 radiation Effects 0.000 claims abstract description 29
- 238000012545 processing Methods 0.000 claims abstract description 15
- 230000007246 mechanism Effects 0.000 claims description 27
- 229910052792 caesium Inorganic materials 0.000 claims description 11
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 claims description 11
- 229910017052 cobalt Inorganic materials 0.000 claims description 11
- 239000010941 cobalt Substances 0.000 claims description 11
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 5
- 230000004888 barrier function Effects 0.000 claims description 5
- 239000013078 crystal Substances 0.000 claims description 5
- 239000002223 garnet Substances 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- BEZBEMZKLAZARX-UHFFFAOYSA-N alumane;gadolinium Chemical compound [AlH3].[Gd] BEZBEMZKLAZARX-UHFFFAOYSA-N 0.000 claims description 4
- 229910052733 gallium Inorganic materials 0.000 claims description 4
- 230000009977 dual effect Effects 0.000 claims 2
- 238000003384 imaging method Methods 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 10
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V5/00—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity
- G01V5/20—Detecting prohibited goods, e.g. weapons, explosives, hazardous substances, contraband or smuggled objects
- G01V5/22—Active interrogation, i.e. by irradiating objects or goods using external radiation sources, e.g. using gamma rays or cosmic rays
- G01V5/223—Mixed interrogation beams, e.g. using more than one type of radiation beam
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/03—Investigating materials by wave or particle radiation by transmission
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/10—Different kinds of radiation or particles
- G01N2223/1006—Different kinds of radiation or particles different radiations, e.g. X and alpha
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/30—Accessories, mechanical or electrical features
- G01N2223/316—Accessories, mechanical or electrical features collimators
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/50—Detectors
- G01N2223/505—Detectors scintillation
- G01N2223/5055—Detectors scintillation scintillation crystal coupled to PMT
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- Analysing Materials By The Use Of Radiation (AREA)
- Measurement Of Radiation (AREA)
Abstract
The invention relates to a double-source double-visual-angle passenger car rapid inspection device which comprises a frame type detection channel, a ray system, a detection system and a data processing system, wherein the frame type detection channel is provided with a plurality of detection channels; two sets of ray systems and two sets of corresponding detection systems are arranged on the detection channel; the radioactive sources of the two sets of ray systems are different and are arranged at different positions of the detection channel, so that the data processing system receives different signals from the detection system to form double-view detection data. The invention has the following beneficial effects: according to the invention, two different radioactive sources are adopted, and the double radioactive sources can provide rays with proper energy, can perform radiation imaging on objects with different densities, and form imaging effects of two different rays, so that contraband can be identified effectively.
Description
Technical Field
The invention belongs to the field of safety detection, and particularly relates to a double-source double-visual-angle passenger car rapid inspection device.
Background
At present, in various public security inspection stations and customs vehicle inspection stations, safety inspection needs to be carried out on vehicles entering and leaving through inspection equipment. Mainly including the portal frame who is used for forming inspection passage among the existing check-out set, set up respectively in the ray source and the detector array of portal frame relative both sides, follow two directions through the ray source and launch the ray of different energies to the vehicle, and detector array receives the ray in order to realize radiation imaging to the realization is to the safety inspection of whole vehicle. However, the existing detection device has poor imaging effect and cannot adapt to the increasing detection requirements.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a double-source double-visual-angle passenger car quick inspection device.
The technical scheme of the invention is as follows:
a double-source double-visual-angle passenger car rapid inspection device comprises a frame type detection channel, a ray system, a detection system and a data processing system; two sets of ray systems and two sets of corresponding detection systems are arranged on the detection channel; the radioactive sources of the two sets of ray systems are different and are arranged at different positions of the detection channel, so that the data processing system receives different signals from the detection system to form double-view detection data.
Furthermore, in the rapid inspection device for the double-source double-view passenger car, the radioactive sources of the two sets of ray systems are respectively a cesium source and a cobalt source.
Furthermore, in the double-source double-view passenger vehicle rapid inspection device, the radioactive source of one set of ray system is installed at the top of the detection passage, and the radioactive source of the other set of ray system is installed at the side of the detection passage.
Further, the double-source double-visual angle passenger car quick inspection device comprises a ray system and a detector, wherein the ray system comprises a shielding body and a radioactive source arranged in the shielding body; the shielding body is provided with a slit collimator and a ray outgoing collimator; and a rear collimation structure is arranged at the detection system.
Furthermore, the ray system of the double-source double-visual angle passenger car rapid inspection device further comprises a pneumatic mechanism, a shielding shutter mechanism and a fixed base; the shielding body is arranged on the fixed base; the shielding shutter mechanism is arranged on the shielding body; the pneumatic mechanism drives the shielding shutter mechanism to move so that the shielding shutter gap of the shielding shutter mechanism is aligned with or staggered from the slit of the shielding body.
Further, in the rapid inspection device for the double-source double-visual-angle passenger car, the radioactive source is mounted in the shielding body through the radioactive source fixing structure; the radioactive source fixing structure comprises a conical threaded sleeve, a shielding rod and an anti-theft cover; the inner part of the conical threaded sleeve is provided with a concave pit with an oblique angle, and the size of the concave pit is matched with that of a radioactive source; the conical threaded sleeve is arranged on the shielding rod, and the shielding rod is inserted into the shielding body.
Further, in the double-source double-visual-angle passenger car rapid inspection device, the step is arranged outside the conical threaded sleeve; the shielding rod is provided with a step.
Further, in the double-source double-view passenger car rapid inspection device, the detection system is a single-row linear array formed by coupling cerium-doped gadolinium aluminum gallium garnet crystals and silicon photomultiplier tubes; the detector array for detecting the cobalt source and the detector array for detecting the cesium source have the same end face size and different lengths so as to detect rays with different energies.
Furthermore, the double-source double-visual-angle passenger car rapid inspection device also comprises a drag chain mechanism; the drag chain mechanism passes through the detection channel and sets up in order to wait to examine the article drag in/drag from the detection channel.
Further, in the above dual-source dual-view passenger car rapid inspection apparatus, the drag chain mechanism includes a platform with a conveyor belt passing through the detection channel; slopes convenient for the object to move up and down are arranged at the two ends of the platform.
Further, in the double-source double-view passenger car rapid inspection device, the platform is also provided with a barrier; and shielding plates are arranged on two sides of the platform.
The invention has the following beneficial effects:
1. according to the invention, two different radioactive sources are adopted, and the double radioactive sources can provide rays with proper energy, can perform radiation imaging on objects with different densities, and form imaging effects of two different rays, so that contraband can be identified effectively.
2. The invention adopts a door frame type structure and adopts a double-view angle mode combining top irradiation and side irradiation, so that the radioactive source has a larger ray emergent opening angle (reaching 80 degrees), the distance from the detector array to the ray source is short, and the dead angle of the inspection is reduced when the inspected vehicle is tall and big. Meanwhile, the front collimator and the rear shielding body are additionally arranged behind the support, so that the support can be installed on any outdoor site, and the radiation safety of personnel and environment is guaranteed.
3. The method adopts a matching structure of single-row cerium-doped gadolinium aluminum gallium garnet (GAGG: Ce) crystals and silicon photomultiplier (SiPM), does not use a current method which is commonly used by the prior inspection equipment, but adopts a gamma photon counting method, directly and digitally extracts a real-time perspective image of an object, and greatly reduces the influence of the dose of a ray source on the environment.
4. The invention reduces the radiation environment, improves the detection signal-to-noise ratio of the detector to the ray and improves the imaging effect through the three ray collimators.
Drawings
FIG. 1 is a schematic structural diagram of a frame-type detection channel according to the present invention.
Fig. 2 is a schematic structural diagram of the dual-source dual-view passenger car rapid inspection device of the present invention.
Fig. 3 is a schematic view of the structure of the ray system of the present invention.
Fig. 4 is a schematic cross-sectional view of a radiation system according to the present invention.
In the above drawings, 1, a top beam; 2. a cesium source shield; 3. a cobalt source detector; 4. a column; 5. a cesium source detector; 6. a cobalt source shield; 7. a bottom beam; 8. a slope; 9. a platform; 10. a barrier gate; 11. a shielding plate; 12. a control box; 13. a constant temperature regulating box; 14. a conveyor belt; 15. a shield; 16. a hoisting ring; 17. a guide rail assembly; 18. a shutter; 19. a cylinder; 20. a cylinder sensor; 21. an electromagnetic valve; 22. a position adjusting bolt; 23. a fixed base; 24. an anti-theft cover; 25. a shielding rod; 26. a tapered thread bush; 27. a radioactive source.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
As shown in fig. 2, the present invention provides a fast inspection apparatus for a dual-source dual-view passenger car, which comprises a frame-type detection channel, a ray system, a detection system and a data processing system; two sets of ray systems and two sets of corresponding detection systems are arranged on the detection channel; the radioactive sources of the two sets of ray systems are different and are arranged at different positions of the detection channel, so that the data processing system receives different signals from the detection system to form double-view detection data. In this embodiment, the radiation sources of the two sets of radiation systems are cesium IV sources and cobalt IV sources, respectively.
The invention adopts two different radioactive sources, the shielding tank adopts lead as a tank body for mainly shielding and collimating, a stainless steel cladding is coated outside, and the front end is provided with a pneumatic valve for controlling the opening and closing of the lead collimator. The double radiation sources can provide rays with proper energy, can perform radiation imaging on objects with different densities, form imaging effects of two different rays and are convenient for effectively identifying contraband.
As shown in FIG. 1, the radiation source of one set of radiation system is installed at the top of the detection passage, and the radiation source of the other set of radiation system is installed at the side of the detection passage. In the embodiment, the cesium source shield 2 is placed on the top beam 1, and the corresponding detector arrays are respectively fixed on the upright column 4 and the bottom beam 7; the cobalt source shield 6 is placed on the frame of the upright 4, and the corresponding detectors are respectively installed on the top beam 1 and one upright 4 corresponding to the top beam.
Therefore, the double-view-angle mode combining top irradiation and side irradiation is adopted, so that the radioactive source has a larger ray emergent opening angle (up to 80 degrees), the distance from the detector array to the ray source is short, and when the inspected vehicle is tall and big, the inspection dead angle is reduced. Meanwhile, the front collimator and the rear shielding body are additionally arranged behind the support, so that the support can be installed on any outdoor site, and the radiation safety of personnel and environment is guaranteed.
In this embodiment, the radiation system includes a shield 15 and a radiation source disposed within the shield 15; the shielding body 15 is provided with a slit collimator and a ray outgoing collimator; a rear collimation structure is arranged at the detection system; through the three ray collimators, the radiation environment is reduced, the detection signal-to-noise ratio of the detector to rays is improved, and the imaging effect is improved.
As shown in fig. 3, the radiation system further comprises a pneumatic mechanism, a shielding shutter mechanism and a fixed base 23. The shielding body 15 is installed on a fixed base 23, and a position adjusting bolt 22 is arranged on the fixed base 23 to finely adjust the position of the shielding body 15. The shielding shutter mechanism is mounted on the shielding body 15; the pneumatic mechanism drives the shielding shutter mechanism to move so that the shielding shutter gap of the shielding shutter mechanism is aligned with or staggered from the slit of the shielding body 15. The radioactive source shielding body 15 is integrally cast according to the radiation intensity of the radioactive source, and a collimation slit is formed in the front of the radioactive source shielding body. The top of the shielding body 15 is provided with a mounting hole for a shielding rod 25 and a radioactive source 27. The shield 15 is provided with a hanging ring 16 on the inclined surface, and a set of linear guide rail assemblies 17 are respectively arranged on the upper and lower sides of the inclined surface, and have the functions of fixing the shielding shutter 18 and guiding in the sliding process. The movement mode of the shielding shutter 18 is to adopt a three-position two-way electromagnetic valve 21 and an air cylinder 19 to control the opening and closing of the shielding shutter 18, the movement and the positioning of the shielding shutter 18 depend on an air cylinder sensor 20, when the electromagnetic valve 21 is opened and air is charged into the air cylinder 19, the air cylinder sensor 20 controls the shielding shutter 18 to be opened to a certain position, a gap of the shielding shutter 18 is aligned with a gap of the shielding body 15, and rays are emitted from the gap to start scanning; when the electromagnetic valve 21 is reversed, the air cylinder 19 is charged reversely, the shielding shutter 18 is restored to the initial position, the gap of the shielding shutter 18 is completely staggered with the gap of the shielding body 15, and the shielding effect is achieved by blocking the rays.
As shown in fig. 4, the radioactive source 27 is mounted within the shield 15 by a radioactive source mounting structure; the radioactive source fixing structure comprises a conical threaded sleeve 26, a shielding rod 25 and an anti-theft cover 24; the interior of the conical threaded sleeve 26 is provided with a concave pit with an oblique angle, and the size of the concave pit is matched with that of the radioactive source 27; the tapered thread bush 26 is mounted on the shield rod 25, and the shield rod 25 is inserted into the shield body 15. The outer part of the conical threaded sleeve 26 is provided with a step; the shielding rod 25 is provided with steps, plays a positioning role and forms a labyrinth shape, and plays a shielding function on rays.
In this embodiment, the detection system is a single-row linear array in which a cerium-doped gadolinium-aluminum-gallium garnet crystal is coupled with a silicon photomultiplier; the detector array for detecting the cobalt source and the detector array for detecting the cesium source have the same end face size and different lengths so as to detect rays with different energies, and an independent collimator is arranged around each group of detectors. The method adopts a matching structure of single-row cerium-doped gadolinium aluminum gallium garnet (GAGG: Ce) crystals and silicon photomultiplier (SiPM), does not use a current method which is commonly used by the prior inspection equipment, but adopts a gamma photon counting method, directly and digitally extracts a real-time perspective image of an object, and greatly reduces the influence of the dose of a ray source on the environment.
The detector arrays are arranged in a line on the frame-type detection channel in this embodiment. Each group of detectors is connected into a 32-path gamma photon signal forming circuit, and after integration, voltage comparison and forming, signals are transmitted to a signal acquisition card for counting and processing. And communicating the signal processing result to a foreground computer of an equipment user, communicating with image software in the foreground computer, and calculating and imaging by using the image generation and processing system.
The image generating and processing system inputs the counting pulse of the single photon into the foreground computer continuously in the sampling period time for generating the original gray image. And generating an original gray image by deducting the background, generating a formal image by processing such as digital equalization and the like, and then processing by an image processing program. Including edge enhancement, contrast enhancement, false color, etc. of the image. And the method also comprises the independent processing of any attention area in the whole image at multiple levels so as to carry out more detailed observation analysis.
The control system of the embodiment adopts an automatic control system to automatically control and monitor the whole process of detecting the vehicle, adopts hierarchical and sectional control, and comprises a host computer, a programmable logic controller PLC, an infrared transmitter, an electromagnet controller of a source tank, a camera, a temperature instrument and a dosimeter, and is mainly used for controlling and recording the entrance of the vehicle, automatically opening and closing the radioactive source shielding bodies 2 and 6, detecting the dosage of each part, controlling the temperature and the humidity in a detection frame, and automatically controlling and monitoring the whole process of detecting the vehicle, thereby ensuring the safety of personnel and the smooth proceeding of detection work, and the unified coordination of the work of each part of the system.
As shown in fig. 2, the inspection apparatus of the present invention further includes a drag chain mechanism; the drag chain mechanism passes through the detection channel and sets up in order to wait to examine the article drag in/drag from the detection channel. The drag chain mechanism comprises a platform 9 with a conveyor belt 14 passing through the detection channel; slopes 8 convenient for the object to move up and down are arranged at two ends of the platform 9. A barrier 10 is also arranged on the platform 9; shielding plates 11 are arranged on two sides of the platform 9. And a constant temperature adjusting box 13 is also arranged on the frame type detection channel.
The device comprises the following specific use steps:
1) when the device is electrified, the detector arrays (the cobalt source detector 3 and the cesium source detector 5) and the electronic circuit are in a state of continuous acquisition, signal forming and counting. The operator selects "calibrate" on the front-end computer imaging control software, taking the data acquired at this time as the background count.
2) When the detected vehicle passes through the slope 8 and is driven onto the platform 9, the barrier 10 is opened, and the conveyor belt 14 starts to work to drive the vehicle to move forward.
3) When a vehicle approaches the detector and blocks infrared photoelectricity, the shutter of the cesium source shielding body 2 is opened, after 2 seconds of delay, the shutter of the cobalt source shielding body 6 is opened, and when the detected vehicle completely passes through the detector, the infrared photoelectricity is triggered and the shutter of the radioactive source is closed. The imaging software of the foreground computer performs data operation and imaging according to the acquired different counts. The foreground computer also collects the appearance and license plate image of the vehicle transmitted by the camera for backup.
4) After the vehicle passes through the bracket as a whole, that is, after the whole scanning is completed, the infrared correlation device installed on the other side of the bracket sends another signal to the control box 12, which indicates that the vehicle has passed through the whole. After receiving the signal, the control box 12 sends a signal to the electromagnet controller, and the electromagnet controller powers off the electromagnet. The source loading device in the shielding tank is reset by the reset spring, the shielding body is reset and retracted, and no gamma ray is emitted at the moment. Meanwhile, the control box 12 sends a signal to the foreground computer, and after receiving the signal, the foreground computer performs uniform packing operation on the gamma ray perspective image and data thereof which are imaged by previous operation and the vehicle appearance license plate image which is collected from the camera, and stores the gamma ray perspective image and the data and the image file which are passed by the current vehicle into a file folder appointed by the computer for calling. At the same time, the rotation of the conveyor belt 14 is stopped, and the detection is finished.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.
Claims (11)
1. A double-source double-visual-angle passenger car rapid inspection device is characterized by comprising a frame type detection channel, a ray system, a detection system and a data processing system; two sets of ray systems and two sets of corresponding detection systems are arranged on the detection channel; the radioactive sources of the two sets of ray systems are different and are arranged at different positions of the detection channel, so that the data processing system receives different signals from the detection system to form double-view detection data.
2. The dual-source dual-view passenger car rapid inspection apparatus of claim 1, wherein the radiation sources of the two sets of radiation systems are cesium sources and cobalt sources, respectively.
3. The dual-source dual-view passenger car rapid inspection device of claim 1, wherein the radiation source of one set of radiation system is installed on the top of the inspection tunnel and the radiation source of the other set of radiation system is installed on the side of the inspection tunnel.
4. The dual-source dual-view passenger car rapid inspection device of claim 1, wherein said radiation system comprises a shield and a radiation source disposed within the shield; the shielding body is provided with a slit collimator and a ray outgoing collimator; and a rear collimation structure is arranged at the detection system.
5. The dual-source dual-view passenger car rapid inspection device of claim 4, wherein the radiation system further comprises a pneumatic mechanism, a shielding shutter mechanism and a fixed base; the shielding body is arranged on the fixed base; the shielding shutter mechanism is arranged on the shielding body; the pneumatic mechanism drives the shielding shutter mechanism to move so that the shielding shutter gap of the shielding shutter mechanism is aligned with or staggered from the slit of the shielding body.
6. The dual-source dual-viewing angle passenger car rapid inspection device of claim 4, wherein said radioactive source is mounted within said shield by a radioactive source mounting structure; the radioactive source fixing structure comprises a conical threaded sleeve, a shielding rod and an anti-theft cover; the inner part of the conical threaded sleeve is provided with a concave pit with an oblique angle, and the size of the concave pit is matched with that of a radioactive source; the conical threaded sleeve is arranged on the shielding rod, and the shielding rod is inserted into the shielding body.
7. The dual-source dual-viewing angle passenger car rapid inspection device of claim 6, wherein the tapered threaded sleeve is externally provided with a step; the shielding rod is provided with a step.
8. The rapid inspection apparatus of claim 2, wherein the detection system is a single-row linear array of cerium-doped gadolinium aluminum gallium garnet crystals coupled with a silicon photomultiplier; the detector array for detecting the cobalt source and the detector array for detecting the cesium source have the same end face size and different lengths so as to detect rays with different energies.
9. The dual-source dual-vision passenger vehicle rapid inspection device of any one of claims 1 to 8, further comprising a tow chain mechanism; the drag chain mechanism passes through the detection channel and sets up in order to wait to examine the article drag in/drag from the detection channel.
10. The dual source dual vision passenger vehicle rapid inspection device of claim 9, wherein said drag chain mechanism comprises a platform with a conveyor belt passing through said detection tunnel; slopes convenient for the object to move up and down are arranged at the two ends of the platform.
11. The dual-source dual-view passenger car rapid inspection device of claim 10, wherein a barrier is further disposed on the platform; and shielding plates are arranged on two sides of the platform.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010712246.7A CN111856602A (en) | 2020-07-22 | 2020-07-22 | Double-source double-visual-angle passenger car rapid inspection device |
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| CN202010712246.7A CN111856602A (en) | 2020-07-22 | 2020-07-22 | Double-source double-visual-angle passenger car rapid inspection device |
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| CN212675197U (en) * | 2020-07-22 | 2021-03-09 | 中国原子能科学研究院 | Double-source double-visual-angle passenger car rapid inspection device |
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| CN2638060Y (en) * | 2002-09-23 | 2004-09-01 | 清华大学 | Garma ray radiation source device used for vehicle load container-detection system |
| CN103091720A (en) * | 2011-10-28 | 2013-05-08 | 中国原子能科学研究院 | Vehicle scanning inspection device |
| CN203535242U (en) * | 2013-11-18 | 2014-04-09 | 公安部第一研究所 | Radiation scanning detection device for small and medium size vehicle |
| CN106442580A (en) * | 2016-11-28 | 2017-02-22 | 深圳黎明镒清图像技术有限公司 | Double-view-angle channel type automobile scanning inspection system |
| CN107991324A (en) * | 2017-12-25 | 2018-05-04 | 北京华力兴科技发展有限责任公司 | Double-visual angle passenger car scanography equipment |
| CN212675197U (en) * | 2020-07-22 | 2021-03-09 | 中国原子能科学研究院 | Double-source double-visual-angle passenger car rapid inspection device |
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