CN1779444A - Safety CT inspection and inspector for liquid by ray resource - Google Patents
Safety CT inspection and inspector for liquid by ray resource Download PDFInfo
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- CN1779444A CN1779444A CN 200410009897 CN200410009897A CN1779444A CN 1779444 A CN1779444 A CN 1779444A CN 200410009897 CN200410009897 CN 200410009897 CN 200410009897 A CN200410009897 A CN 200410009897A CN 1779444 A CN1779444 A CN 1779444A
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Abstract
A method for carrying out CT safety detection on liquid by radioactive source includes setting detected liquid article on rotary platform, emitting ray on liquid article by radioactive source and passing ray through said article to be received by detector and data collector just facing ray beam and to be formed as projective data, transmitting projective data to computer data processor for obtaining liquid density of detected liquid article, comparing obtained density to density of dangerous article stored in databank and displaying detection result of detected liquid article in direct - viewing way.
Description
Technical field
The present invention relates to radiant image detection technique field, particularly liquid is carried out the method and the device thereof of CT safety detection with radiographic source.
Background technology
In the safety check system of civil aviaton, need under situation about not breaking a seal, check the liquid article that the passenger carries.The inspection method of using in the prior art mainly contains: chemical method, electromagnetic method and neutron detection method.Be divided into smell method of identification and ion scan explosive detection method etc. in the chemical detection method again, these methods often are subjected to having a strong impact on of detected material package encapsulation situation in actual applications, and the chemical detection method has the shortcoming that susceptibility is strong, false drop rate is high.Electromechanical detection method is subjected to electromagnetic interference (EMI) easily owing to weak output signal, and can not detect the liquid article with mental package.The use meeting of neutron detection method causes radiation residual because of " neutron activation " to tested liquid, and radiation shield complexity, poor stability, occupation area of equipment are big, investment is high, are not suitable for using on a large scale in the safety check system of civil aviaton.Existing X-ray scanning detection system is will see through the X ray of inspected object through in the detector, according to its Strength Changes, and the Density Distribution in the reflection inspected object, and transmitted intensity is transformed into gradation of image, thus obtain the fluoroscopy images of inspected object.Thisly carry out the X-ray scanning detection method of imaging and can't realize the imaging of the uniform liquid article of Density Distribution is detected by differentiating the inspected object density variation.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the purpose of this invention is to provide a kind of method and device thereof that liquid is carried out the CT safety detection with radiographic source.It utilizes radiographic source that the liquid article of encapsulation is carried out the CT detection, thereby obtains the density of liquid information of surveying.Apparatus of the present invention have that volume is little, accuracy is high, strong interference immunity, safe and reliable, the advantage that is easy to protect.Be applicable to the safety check system in civil aviaton and other important place.
In order to reach above-mentioned goal of the invention, technical scheme of the present invention realizes as follows:
A kind ofly with radiographic source liquid is carried out the method for CT safety detection, it comprises uses radioactive source, detector and data acquisition unit, computer data processor; Its key step is:
1) tested liquid article is placed on the rotatable rotatable platform;
2) sending ray by radiographic source passes liquid article and receives and form data for projection by detector and data acquisition unit over against ray beam;
3) data for projection is transferred to the fluid density that the article of surveying were handled and obtained to computer data processor, the density of dangerous material in result and the existing database is made comparisons again, and the tested liquid article of demonstration directly perceived then detects information.
Realize above-mentionedly with radiographic source liquid being carried out the device of CT safety detection method, it comprises radiographic source, detector and data acquisition unit, computer data processor.Described detector and data acquisition unit are the integral module structure, comprise data amplification wave-shaping circuit in the data acquisition unit.The database that comprises the dangerous material material density in the computer data processor.Its design feature is, described radiographic source places rotatable platform mechanism one side that can place tested liquid article, and described detector and data acquisition unit place the opposite side of rotatable platform mechanism and X, the gamma-rays light beam that penetrates over against radiographic source.The data output cable of detector and data acquisition unit is connected with computer data processor.
In above-mentioned device, described radiographic source adopts X-ray machine or isotope.
In above-mentioned device, described detector adopts solid probe or gas detector.
In above-mentioned device, described data acquisition unit can work in current integration mode or counting mode.
In above-mentioned device, the co-ordination of described radiographic source, detector and data acquisition unit, computer data processor and rotatable platform mechanism is by set scanning monitor synchro control.
The present invention is owing to adopted above-mentioned method and structure, utilize radiographic source that but the liquid article of its rotation of Be Controlled of encapsulation is carried out tomography CT detection, form the density information of the liquid article of surveying, again the dangerous liquid density value of storing in the survey density of liquid information and date storehouse is compared, thus judge the liquid of surveying whether be dangerous material.Compare with prior art, volume of the present invention is little, the accuracy height of strong interference immunity, detection, be easy to shielding, safe and reliable.
The present invention is described further below in conjunction with accompanying drawing and concrete embodiment.
Description of drawings
Accompanying drawing is a structural representation of the present invention.
Embodiment
Referring to accompanying drawing, the present invention includes the detector that adopts X-ray machine or isotopic radiographic source 1, integral module structure and data acquisition unit 4, computer data processor 6.Detector adopts solid probe or gas detector, comprises in the data acquisition unit that data amplification wave-shaping circuit can work in current integration mode or counting mode.The database that comprises the dangerous material material density in the computer data processor 6.Radiographic source 1 places rotatable platform mechanism 3 one sides that can place tested liquid article, and detector and data acquisition unit 4 place the opposite side of rotatable platform mechanism 3 and X, the gamma-rays light beam that penetrates over against radiographic source 1.The data output cable of detector and data acquisition unit 4 is connected with computer data processor 6.The co-ordination of radiographic source 1, detector and data acquisition unit 4, computer data processor 6 and rotatable platform mechanism 3 is by set scanning monitor 5 synchro control.
Step during apparatus of the present invention are used is:
1) connects power supply, tested liquid article is placed in the rotatable rotatable platform mechanism 3 by radiographic source 1, detector and data acquisition unit 4, computer data processor 6 and the rotatable platform mechanism 3 of scanning monitor 5 controls.
2) sending ray by radiographic source 1 passes liquid article and receives and form the projection data for projection by detector and data acquisition unit 4 over against ray beam.Scanning monitor 5 control rotatable platform mechanisms 3 drive liquid article with certain speed rotation, simultaneously detector and data acquisition unit 4 also under the control of scanning monitor 5 with certain speed sampling, obtain a plurality of projection data for projection of liquid article in this tomography.
3) data for projection is transferred to computer data processor 6 and proofreaies and correct, rebuilds, and calculates the fluid density of the liquid article of being surveyed, and the density of dangerous material in result and the existing database is made comparisons again, the detection information that shows tested liquid article directly perceived then.
Claims (6)
1, a kind ofly with radiographic source liquid is carried out the method for CT safety detection, it comprises uses radiographic source, detector and data acquisition unit, computer data processor; Its key step is:
1) tested liquid article is placed on the rotatable rotatable platform;
2) sending ray by radiographic source passes liquid article and receives and form data for projection by detector and data acquisition unit over against ray beam;
3) data for projection is transferred to the fluid density that the article of surveying were handled and obtained to computer data processor, the density of dangerous material in result and the existing database is made comparisons again, and the tested liquid article of demonstration directly perceived then detects information.
2, realize the device that liquid is carried out the method for CT safety detection with radiographic source as claimed in claim 1, it comprises radiographic source (1), detector and data acquisition unit (4), computer data processor (6), described detector and data acquisition unit (4) are the integral module structure, comprise data amplification wave-shaping circuit in the data acquisition unit, the database that comprises the dangerous material material density in the computer data processor (6), it is characterized in that, described radiographic source (1) places rotatable platform mechanism (3) one sides that can place tested liquid article (2), described detector and data acquisition unit (4) place the opposite side of rotatable platform mechanism (3) and the X that penetrates over against radiographic source (1), the gamma-rays light beam, the data output cable of detector and data acquisition unit (4) is connected with computer data processor (6).
According to the described device of claim 2, it is characterized in that 3, described radiographic source (1) adopts X-ray machine or isotope source.
According to claim 2 or 3 described devices, it is characterized in that 4, described detector adopts solid probe or gas detector.
According to the described device of claim 4, it is characterized in that 5, described data acquisition unit can work in current integration mode or counting mode.
According to the described device of claim 5, it is characterized in that 6, the co-ordination of described radiographic source (1), detector and data acquisition unit (4), computer data processor (6) and rotatable platform mechanism (3) is by set scanning monitor (5) synchro control.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410009897 CN1779444B (en) | 2004-11-26 | 2004-11-26 | Safety CT inspector for liquid by ray resource |
| GB0821723A GB2452187B (en) | 2004-11-26 | 2005-11-22 | Computed Tomography apparatus for detecting unsafe liquids |
| GB0523738A GB2420683B (en) | 2004-11-26 | 2005-11-22 | A computer tomography method and apparatus for identifying a liquid article based on the density of the liquid article |
| US11/286,559 US7508908B2 (en) | 2004-11-26 | 2005-11-23 | CT method and apparatus for liquid safety-detection with a radiation source |
| DE200510056086 DE102005056086B4 (en) | 2004-11-26 | 2005-11-24 | CT method and apparatus for liquid safety detection with a radiation source |
| PCT/CN2005/001999 WO2006056134A1 (en) | 2004-11-26 | 2005-11-25 | Ct security inspection method for liquid by radiation source and its device |
| HK06112939.3A HK1092525A1 (en) | 2004-11-26 | 2006-11-24 | Device for carrying out ct safety detection on liquid by radioactive source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410009897 CN1779444B (en) | 2004-11-26 | 2004-11-26 | Safety CT inspector for liquid by ray resource |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1779444A true CN1779444A (en) | 2006-05-31 |
| CN1779444B CN1779444B (en) | 2010-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410009897 Active CN1779444B (en) | 2004-11-26 | 2004-11-26 | Safety CT inspector for liquid by ray resource |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1779444B (en) |
| HK (1) | HK1092525A1 (en) |
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008037133A1 (en) * | 2006-09-05 | 2008-04-03 | Nuctech Company Limited | Method and device for security-inspection of liquid articles with radiations |
| WO2009003346A1 (en) * | 2007-06-29 | 2009-01-08 | Tsinghua University | Method for inspecting the drug concealed in a liquid article and its device |
| WO2009043232A1 (en) * | 2007-10-05 | 2009-04-09 | Tsinghua University | Method and device for detecting liquid article |
| WO2009043233A1 (en) * | 2007-10-05 | 2009-04-09 | Tsinghua University | Method and device for detecting liquid article |
| 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 |
| CN101281146B (en) * | 2008-05-16 | 2011-01-05 | 中国兵器工业第二一三研究所 | Method for detecting industry CT of batch product internal material density |
| US7991112B2 (en) | 2007-12-27 | 2011-08-02 | Nuctech Company Limited | Article detection apparatus and a detecting method |
| CN102435620A (en) * | 2007-10-05 | 2012-05-02 | 清华大学 | Method and device for checking liquid articles |
| CN102456129A (en) * | 2010-10-26 | 2012-05-16 | 同方威视技术股份有限公司 | Image deviation-rectifying method and system for safety inspection |
| CN102539455A (en) * | 2007-10-05 | 2012-07-04 | 清华大学 | Examination method and examination equipment for liquid articles |
| CN102565107A (en) * | 2007-10-05 | 2012-07-11 | 清华大学 | Liquid article inspection method and equipment |
| CN102565102A (en) * | 2007-10-05 | 2012-07-11 | 清华大学 | Liquid item inspection method and equipment |
| CN101629916B (en) * | 2008-07-15 | 2012-12-12 | 公安部第一研究所 | Double-energy X-ray spiral CT device for detecting liquid safety, and detection method thereof |
| CN102095666B (en) * | 2007-10-05 | 2012-12-12 | 清华大学 | Method and equipment for checking liquid object |
| CN102095664B (en) * | 2007-10-05 | 2013-03-27 | 清华大学 | Method and device for checking liquid article |
| CN102095663B (en) * | 2007-10-05 | 2013-06-05 | 清华大学 | Method and equipment for inspecting liquid substances |
| CN102162798B (en) * | 2007-10-05 | 2013-12-04 | 清华大学 | Method and equipment for inspecting liquid article |
| CN102147376B (en) * | 2007-10-05 | 2014-02-26 | 清华大学 | Liquid article detection method and device |
| CN102608135B (en) * | 2007-10-05 | 2015-02-18 | 清华大学 | Method and equipment for confirming CT (Computed Tomography) scanning position in dangerous goods inspection system |
| CN105067644A (en) * | 2015-07-30 | 2015-11-18 | 安徽中杰信息科技有限公司 | Method for identifying liquid hazardous article through X-ray inspection system |
| CN105910956A (en) * | 2016-04-15 | 2016-08-31 | 中国科学院上海硅酸盐研究所 | Industrial CT analysis method of object density and density distribution |
| CN107422388A (en) * | 2017-07-29 | 2017-12-01 | 合肥千奴信息科技有限公司 | A kind of method that liquid dangerous material are identified with X-ray inspection system |
| CN109490801A (en) * | 2017-09-12 | 2019-03-19 | 西门子(深圳)磁共振有限公司 | The detection method and device of the transmitting antenna level sensor of magnetic resonance imaging system |
| CN109612923A (en) * | 2018-12-12 | 2019-04-12 | 长江大学 | Different rotary mode liquid experiment instrument and application method based on imaging system |
| WO2019119845A1 (en) * | 2017-12-22 | 2019-06-27 | 有方（合肥）医疗科技有限公司 | X-ray imaging device and method for imaging by using same |
| CN112748040A (en) * | 2020-12-24 | 2021-05-04 | 郑州工程技术学院 | Slurry pipeline conveying density change detection meter and detection method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102095665B (en) * | 2007-10-05 | 2013-04-17 | 清华大学 | Method and equipment for inspecting liquid substances |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO1992006636A1 (en) * | 1990-10-22 | 1992-04-30 | Innovative Imaging Systems, Inc. | Three-dimensional tomographic system |
| CN2262709Y (en) * | 1996-10-25 | 1997-09-17 | 丁厚本 | Transmission/compton back scattering dual-purpose 3-D ray tomoscanning imaging apparatus |
| CN1164928C (en) * | 2001-09-21 | 2004-09-01 | 清华大学 | Detecting method and equipment for X-or gamma-radiation imaging |
-
2004
- 2004-11-26 CN CN 200410009897 patent/CN1779444B/en active Active
-
2006
- 2006-11-24 HK HK06112939.3A patent/HK1092525A1/en unknown
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| US7634055B2 (en) | 2006-09-05 | 2009-12-15 | Nuctech Company Limited | Method and device for security-inspection of liquid articles with radiations |
| WO2008037133A1 (en) * | 2006-09-05 | 2008-04-03 | Nuctech Company Limited | Method and device for security-inspection of liquid articles with radiations |
| WO2009003346A1 (en) * | 2007-06-29 | 2009-01-08 | Tsinghua University | Method for inspecting the drug concealed in a liquid article and its device |
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| WO2009043233A1 (en) * | 2007-10-05 | 2009-04-09 | Tsinghua University | Method and device for detecting liquid article |
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Also Published As
| Publication number | Publication date |
|---|---|
| HK1092525A1 (en) | 2007-02-09 |
| CN1779444B (en) | 2010-04-14 |
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