CN107014842A - Safety check information acquisition system - Google Patents
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- CN107014842A CN107014842A CN201710447505.6A CN201710447505A CN107014842A CN 107014842 A CN107014842 A CN 107014842A CN 201710447505 A CN201710447505 A CN 201710447505A CN 107014842 A CN107014842 A CN 107014842A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 63
- 238000001514 detection method Methods 0.000 claims abstract description 55
- 230000007423 decrease Effects 0.000 claims abstract description 6
- 230000003750 conditioning effect Effects 0.000 claims description 26
- 230000008878 coupling Effects 0.000 claims description 11
- 238000010168 coupling process Methods 0.000 claims description 11
- 238000005859 coupling reaction Methods 0.000 claims description 11
- 230000003287 optical effect Effects 0.000 claims description 10
- 230000036541 health Effects 0.000 claims description 7
- 238000003384 imaging method Methods 0.000 claims description 4
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- 238000004519 manufacturing process Methods 0.000 claims 1
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Classifications
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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
- 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
- G01N23/06—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 measuring the absorption
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- G01V5/22—
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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
- G01N2223/04—Investigating materials by wave or particle radiation by transmission and measuring absorption
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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
- G01N2223/05—Investigating materials by wave or particle radiation by diffraction, scatter or reflection
- G01N2223/053—Investigating materials by wave or particle radiation by diffraction, scatter or reflection back scatter
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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
- G01N2223/101—Different kinds of radiation or particles electromagnetic radiation
- G01N2223/1016—X-ray
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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
- G01N2223/40—Imaging
- G01N2223/426—Imaging image comparing, unknown with known substance
Abstract
The safety check information acquisition system that the present invention is provided, gather backscatter signal, go forward side by side line calculation process, acquisition of transmission signal, and logarithm operation processing is carried out, improve the identification of thing 2 to be detected, no matter contraband is high atomic series or low atomic series, it is high density or low-density, can detects, and then improves detection efficiency；The start and stop of X-ray emitter are automatically controlled with light barrier signal, every thing 2 to be detected individually carries out an automatic detection, improves detection efficiency；At least 1 group backscatter detector is set, every group includes 2 backscatter detectors, every group of 2 backscatter detectors are paired, be symmetrically dispersed in the both sides of X-ray emitter, each group backscatter detector can increase and decrease in pairs, can shift position in pairs, it is easy to adjust the test position of backscatter detector according to the size of thing 2 to be detected, user can carry out quantity and position adjustment for different application occasion, and data basis is provided further to improve detection efficiency.
Description
Technical field
The present invention relates to detection technique field, more particularly to safety check information acquisition system.
Background technology
Country is equipped with security detection equipment on harbour, station, airport and other places, contraband is checked, to safeguard country
Safety, social safety and public situation safety.
Rays safety detection apparatus is typically that single energy or dual intensity safety check, this method are carried out to luggage, goods etc. using the penetration power of X-ray
The equivalent atom sequence information of thing to be detected can be accurately extracted, the shape of thing to be detected is obtained, but can not be determined to be detected
The density attributes of thing, for drugs, the material that explosive isodensity is higher, equivalent atom sequence is relatively low, it is impossible to accurately detect, hold
Easily there is missing inspection or flase drop, for the contraband being hidden in behind shelter, be even more difficult to detect.It can be seen that, traditional safety check
System, detection efficiency is low.
The content of the invention
The present invention provides safety check information acquisition system, the problem of detection efficiency that the existing rays safety detection apparatus of solution is present is low.
The present invention solves the above problems by the following technical programs：
Safety check information acquisition system, including controller module, x-ray source controller, X-ray emitter and transmission device,
The controller module sends instruction to x-ray source controller, controls X-ray emitter to be tied to transmission from x-ray source controller
Structure sends X-ray, in addition to the conditioning of back scattering detecting module, backscatter signal conditioning module, transmission detection module, transmission signal
Module, light barrier signal detection module and whole control end；The backscatter signal detector receives x-ray bombardment after thing to be detected
The backscatter signal of generation, the backscatter signal is inputted into backscatter signal conditioning module and nursed one's health, then is inputted to control
In device module processed；The transmission detection module receives the transmission signal after X-ray transmission thing to be detected, the transmission signal input
Nursed one's health, then inputted into controller module to transmission signal conditioning module；Thing to be detected enters detection zone, triggers entrance
Light barrier, produces light barrier signal, and the light barrier signal detection module inputs the light barrier signal detected into controller module, by
Controller module sends instruction to x-ray source controller, starts X-ray emitter, and when thing to be detected goes out detection zone, touches
A mouthful light barrier is sent, light barrier signal is produced, the light barrier signal detection module inputs the light barrier signal detected to controller mould
In block, instruction is sent from controller module to x-ray source controller, stops X-ray emitter；The controller module is to whole control
Each signal that end input is received, in control end imaging eventually；The backscatter signal conditioning module is linear calculating circuit；It is described
Signal-regulated kinase is penetrated for logarithmic operational circuit.
Further, including alarm, the alarm is connected with controller module；Control end image checking goes out contraband eventually
Afterwards, instruction is sent to controller module, starts alarm.
Further, including actuator, the actuator mainly includes motor, while controller module starts alarm
Start motor, close safety check gate.
Further, the transmission detection module is L-type transmission detector array.
Further, light barrier signal detection module is that light barrier detects interface and optical coupling isolator, and affiliated light barrier detects interface
Light barrier trigger signal is received, is inputted into optical coupling isolator, the output end of the optical coupling isolator is connected with controller module.
Further, the back scattering detecting module includes at least 1 group backscatter detector, and every group of backscatter detector is
2 backscatter detectors；Every group of 2 backscatter detectors are paired, be symmetrically dispersed in the both sides of X-ray emitter；Each group
Backscatter detector can increase and decrease in pairs, can shift position in pairs.
Further, in addition to collimater and flywheel；The flywheel is provided with seam；During work, flywheel is clockwise or counterclockwise
Projected after rotation, the X-ray collimator, flywheel on thing to be detected.
Further, the transmission device mainly includes conveyer belt；The thing to be detected is moved on a moving belt, the X
Ray generator and back scattering detecting module are arranged on the same side of conveyer belt；Light is set at the entrance and exit of conveyer belt
Barrier, respectively entrance light barrier and outlet light barrier；The signal of the generation of entrance light barrier and outlet light barrier is inputted to light barrier signal detection
In module.
Advantages of the present invention is with effect：
The 1st, back scattering detecting module and backscatter signal conditioning module are set, backscatter signal, line of going forward side by side fortune is gathered
Calculation is handled, and sets transmission detection module and transmission signal conditioning module, acquisition of transmission signal, and carries out logarithm operation processing, is led to
The dual intensity detection to back scattering and transmission is crossed, and carries out linear and logarithm process respectively, the identification for treating detectable substance, nothing is improved
It is high atomic series or low atomic series by contraband, is high density or low-density, can detect, and then improves detection
Efficiency；The start and stop of X-ray emitter are automatically controlled with light barrier signal, every thing to be detected is individually once examined automatically
Survey, once detecting any contraband, contraband can be determined rapidly on any part article, improve detection efficiency, be easy to safety inspector
Take action in time；
The 2nd, alarm and actuator are set, when detecting contraband, starts alarm, safety inspector can take measures rapidly,
Gate is closed automatically in the drive of actuator, is limited thing to be detected and is crossed safety check, and isolates the carrier of contraband, with around ensureing
The safety of personnel；
The 3rd, at least 1 group backscatter detector is set, and every group includes 2 backscatter detectors, and every group of 2 back scatterings are visited
The both sides that device is paired, be symmetrically dispersed in X-ray emitter are surveyed, each group backscatter detector can in pairs increase and decrease, can move in pairs
Position, is easy to adjust quantity and the position of backscatter detector according to the size of thing to be detected, user can be for different application
Close and carry out quantity and position adjustment, data basis is provided further to improve detection efficiency.
Brief description of the drawings
Fig. 1 is structural principle block diagram of the present invention.
Fig. 2 is the structural representation of transmission device of the present invention.
In figure marked as：1st, conveyer belt；2nd, thing to be detected.
Embodiment
The invention will be further described with reference to embodiments, but the invention is not limited in these embodiments.
Back scattering imaging is very sensitive for the material of low-density, it is adaptable to the detection to drugs, explosive etc., and the present invention is provided
Safety check information acquisition system integrate the back scattering and transmission of X-ray and analyze the density information and effective atom of thing 2 to be detected
Sequence, whether with reference to both information, it is contraband that can accurately judge thing 2 to be detected.
Safety check information acquisition system, including controller module, x-ray source controller, X-ray emitter and transmission device,
The controller module sends instruction to x-ray source controller, controls X-ray emitter to be tied to transmission from x-ray source controller
Structure sends X-ray, in addition to the conditioning of back scattering detecting module, backscatter signal conditioning module, transmission detection module, transmission signal
Module, light barrier signal detection module and whole control end；The backscatter signal detector receives x-ray bombardment in thing 2 to be detected
The backscatter signal produced afterwards, the backscatter signal is inputted into backscatter signal conditioning module and nursed one's health, then input to
In controller module；The transmission detection module receives the transmission signal after X-ray transmission thing 2 to be detected, the transmission signal
Input to transmission signal conditioning module is nursed one's health, then is inputted into controller module；Thing 2 to be detected enters detection zone, touches
Entrance light barrier is sent out, light barrier signal is produced, the light barrier signal detection module inputs the light barrier signal detected to controller mould
In block, instruction is sent from controller module to x-ray source controller, starts X-ray emitter, and go out detection in thing 2 to be detected
During region, triggering outlet light barrier, produce light barrier signal, the light barrier signal detection module by the light barrier signal detected input to
In controller module, instruction is sent from controller module to x-ray source controller, stops X-ray emitter；The controller mould
Block is to each signal that the input of control end is received eventually, in control end imaging eventually；The backscatter signal conditioning module is linear operation electricity
Road；The transmission signal conditioning module is logarithmic operational circuit.
The back scattering detecting module includes at least 1 group backscatter detector, and every group of backscatter detector is 2 back scatterings
Detector；Every group of 2 backscatter detectors are paired, be symmetrically dispersed in the both sides of X-ray emitter；Each group back scattering is detected
Device can increase and decrease in pairs, can shift position in pairs.
X-ray emitter produces X-ray, invests on the thing to be detected 2 on transmission device, produces scattering, back scattering detection
The part energy of device reception space scattering.Because the signal that backscatter detector is acquired is fainter, it can be visited in back scattering
Device is surveyed by using large area plastic scintillant and photomultiplier tube detectors to improve energy resolution, plastic scintillant is received
Lighted after particle, the light sent passes to photomultiplier, electric signal is exported after photomultiplier processing to backscatter signal
Conditioning module.
The backscatter detector that the present invention is provided, with X-ray emitter in the homonymy of transmission device, security staff can basis
Demand increases and decreases in couples, mobile backscatter detector, and the set condition of unrestricted choice measurement can be used in detecting large-scale, geometry
Complex-shaped, multilayer thing 2 to be detected, user can carry out quantity and position adjustment for different application occasion, be further to carry
High detection efficiency provides data basis.
Backscatter signal conditioning module is linear calculating circuit.The mode of current sampling has logarithm, index and linear, due to
Backscatter signal is stronger, and signal intensity meets the scope that A/D changes input voltage, therefore, is believed using linear calculating circuit
Number conditioning.
Transmission detection module is L-type transmission detector array.X-ray bombardment is to after thing 2 to be detected, being transmitted to L-type transmission
On detector array, a series of transmission detectors in L-type transmission detector array absorb.Transmission detectors mainly have flicker
Body and photovoltaic array composition, scintillator surface are covered with opaque material and material containing high reflection, and transmitted light is radiated at scintillator
On, scintillator lights, and the light sent is transferred to photovoltaic array after transparent thin film layer, and photovoltaic array exports electric signal,
Input to logarithmic operational circuit and nursed one's health again.
Because transmitted signal strength is weak, transmission signal is nursed one's health using logarithmic operational circuit.Transmission detectors it is defeated
It is current signal to go out, and logarithmic operational circuit is converted into voltage signal.Logarithmic operational circuit mainly includes prime logarithmic amplification
Device and rear class operational amplifier, prime logafier are used to weak current being converted to voltage signal, by amplifier and low-power consumption
Triode realizes that its output voltage is with input current into logarithmic relationship, and rear class operational amplifier amplifies the voltage signal to pipe,
A/D is convenient for change and input into controller module.
Backscatter signal and transmission signal of the collection x-ray bombardment after thing 2 to be detected, carry out linear operation respectively respectively
Conditioning and logarithm operation conditioning, the strong and weak feature to signal pointedly select suitable conditioning mode, and detectable substance is treated in raising
Identification, no matter contraband is high atomic series or low atomic series, is high density or low-density, can provide accurate
Signal as data basis, for reducing backscatter images and transmission image, for improve detection efficiency data basis is provided.
Light barrier is respectively provided with the porch and exit of detection zone, when needing detectable substance 2 into detection zone, entrance light
Barrier is triggered, when needing detection zone at detectable substance 2, and outlet light barrier is triggered, and the signal that entrance light barrier is produced is detected through light barrier
Inputted after interface, optical coupling isolator to controller module, send X-ray for triggering X-ray emitter, outlet light barrier is produced
Signal is inputted to controller module after detecting interface, optical coupling isolator through light barrier, stops sending X for triggering X-ray emitter
Ray.Light barrier signal detection module is that light barrier detects interface and optical coupling isolator, affiliated light barrier detection interface light barrier triggering
Signal, is inputted into optical coupling isolator, the output end of the optical coupling isolator is connected with controller module.
Control termination admission controller module is provided eventually back scattering and transmission signal, carry out image procossing, obtain thing 2 to be detected
Equivalent atom sequence and density, reconstruct the transmission image and backscatter images of thing 2 to be detected, and further reconstruct to be checked
Survey the true picture of thing 2.
Transmission device mainly includes conveyer belt 1, and the thing 2 to be detected is moved on conveyer belt 1, the X-ray emitter
The same side of conveyer belt 1 is arranged on back scattering detecting module；Light barrier is set at the entrance and exit of conveyer belt 1, is respectively
Entrance light barrier and outlet light barrier, the signal of the generation of entrance light barrier and outlet light barrier are inputted into light barrier signal detection module.
Also include collimater and flywheel；The flywheel is provided with seam；During work, flywheel clockwise or counterclockwise, the X
Projected after ray collimator, flywheel on thing 2 to be detected.The beam of sector is produced after X-ray collimator, then is passed through
Seam on the flywheel of rotation, forms pencil X-ray beam, and is allowed to the thing 2 to be detected of periodic scan according to a certain direction, wherein
A part of Radiolucent thing 2 to be detected, is received by L-type transmission detector array, transmission signal is produced, for rebuilding transmission plot
Picture, another part ray is scattered in body surface, and partial dispersion signal is received by backscatter detector, is dissipated for rebuilding the back of the body
Penetrate image.
Further comprise alarm, the alarm is connected with controller module；Control end image checking goes out after contraband eventually,
Instruction is sent to controller module, starts alarm.Whole control end is reconstructed after transmission image and backscatter images, further weight
The true picture of thing 2 to be detected is built out, is compared with existing contraband database, once judge that thing 2 to be detected is violated
Product, send instruction to controller module immediately, and alarm is started by controller module, and on-the-spot security inspection personnel are appreciated that according to alarm
Information processing contraband and contraband carrier.
Further comprise actuator, the actuator mainly includes motor, and controller module is opened while starting alarm
Dynamic motor, closes safety check gate.Because contraband carrier may be when being detected to carry contraband, scene, which is taken, extremely arranges
Apply, it is therefore necessary to be arranged as required to actuator, start actuator immediately when checking any contraband, close safety check lock
The position of door, limitation contraband and contraband carrier, it is to avoid harm public arena.
The present invention the course of work be：
Thing 2 to be detected enters region to be detected by conveyer belt 1, triggers entrance light barrier, produces light barrier signal, light barrier signal
Detection module is input in controller module, and controller module sends to x-ray source controller and instructed, by x-ray source control
Device processed starts X-ray emitter；The X-ray collimator and flywheel of generation are radiated on thing 2 to be detected, a part of Radiolucent
Thing 2 to be detected is absorbed by L-type transmission detector array, is inputted after logarithm operation is carried out into controller module, transmission information
Input is into control end eventually, and another part ray is scattered on the surface of thing 2 to be detected, is absorbed by backscatter detector, is carrying out
Inputted after linear operation into controller module, back scattering information is inputted into control end eventually；Control end is according to the transmission received eventually
The transmission image and backscatter images of information and back scattering information reconstruction thing 2 to be detected, and the true of thing 2 to be detected is rebuild in a progress
Real image, is compared with existing contraband database, once finding that thing 2 to be detected contains contraband, is sent out immediately to controller module
Go out instruction, start alarm and actuator.
Claims (8)
1. safety check information acquisition system, including controller module, x-ray source controller, X-ray emitter and transmission device, institute
State controller module and send instruction to x-ray source controller, X-ray emitter is controlled to drive mechanism from x-ray source controller
Send X-ray, it is characterised in that：
Also include back scattering detecting module, backscatter signal conditioning module, transmission detection module, transmission signal conditioning module, light
Hinder signal detection module and eventually control end；
The backscatter signal detector receives the backscatter signal that x-ray bombardment is produced afterwards in thing to be detected (2), and the back of the body dissipates
Penetrate signal and input into backscatter signal conditioning module and nursed one's health, then input into controller module；The transmission detection mould
Block receives the transmission signal after X-ray transmission thing to be detected (2), and the transmission signal is inputted to transmission signal conditioning module and carried out
Conditioning, then input into controller module；Thing (2) to be detected enters detection zone, triggers entrance light barrier, produces light barrier signal,
The light barrier signal detection module inputs the light barrier signal detected into controller module, from controller module to X-ray
Source controller sends instruction, starts X-ray emitter, and when thing to be detected (2) goes out detection zone, triggering outlet light barrier, production
The third contact of a total solar or lunar eclipse hinders signal, and the light barrier signal detection module inputs the light barrier signal detected into controller module, by controller
Module sends instruction to x-ray source controller, stops X-ray emitter；The controller module is received to control end input eventually
Each signal, eventually control end imaging；
The backscatter signal conditioning module is linear calculating circuit；The transmission signal conditioning module is logarithmic operational circuit.
2. safety check information acquisition system according to claim 1, it is characterised in that：
Further comprise alarm, the alarm is connected with controller module；Control end image checking goes out after contraband eventually, to control
Device module processed sends instruction, starts alarm.
3. safety check information acquisition system according to claim 1, it is characterised in that：
Further comprise actuator, the actuator mainly includes motor, and controller module starts electricity while starting alarm
Machine, closes safety check gate.
4. safety check information acquisition system according to claim 1, it is characterised in that：The transmission detection module is that L-type is saturating
Penetrate detector array.
5. safety check information acquisition system according to claim 1, it is characterised in that：Light barrier signal detection module is examined for light barrier
Interface and optical coupling isolator are surveyed, affiliated light barrier detects interface light barrier trigger signal, inputs into optical coupling isolator, the light
The output end of coupling isolator is connected with controller module.
6. safety check information acquisition system according to claim 1, it is characterised in that：
The back scattering detecting module includes at least 1 group backscatter detector, and every group of backscatter detector is 2 back scattering detections
Device；Every group of 2 backscatter detectors are paired, be symmetrically dispersed in the both sides of X-ray emitter；Each group backscatter detector can
Increase and decrease in pairs, can shift position in pairs.
7. safety check information acquisition system according to claim 1, it is characterised in that：
Also include collimater and flywheel；The flywheel is provided with seam；During work, flywheel clockwise or counterclockwise, the X-ray
Projected after collimator, flywheel on thing to be detected (2).
8. basis wants right to seek the safety check information acquisition system in 1-7 described in any one, it is characterised in that：
The transmission device mainly includes conveyer belt (1)；The thing to be detected (2) is moved on conveyer belt (1), the X-ray
Generator and back scattering detecting module are arranged on the same side of conveyer belt (1)；Light is set at the entrance and exit of conveyer belt (1)
Barrier, respectively entrance light barrier and outlet light barrier；The signal of the generation of entrance light barrier and outlet light barrier is inputted to light barrier signal detection
In module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710447505.6A CN107014842A (en) | 2017-06-14 | 2017-06-14 | Safety check information acquisition system |
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| CN201710447505.6A CN107014842A (en) | 2017-06-14 | 2017-06-14 | Safety check information acquisition system |
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| CN201710447505.6A Pending CN107014842A (en) | 2017-06-14 | 2017-06-14 | Safety check information acquisition system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107991326A (en) * | 2017-12-18 | 2018-05-04 | 公安部第三研究所 | Single so many energy radioscopy in source merges safe examination system with scattering |
| CN110865415A (en) * | 2018-08-28 | 2020-03-06 | 浙江大华技术股份有限公司 | Security inspection method and device |
| CN113759432A (en) * | 2021-07-20 | 2021-12-07 | 浙江华视智检科技有限公司 | Security check system, data acquisition rate adjusting method and article information detection method |
| CN113960087A (en) * | 2021-10-18 | 2022-01-21 | 山东芯慧微电子科技有限公司 | Image acquisition system for X-ray back scattering security inspection system |
| EP3844487A4 (en) * | 2018-08-30 | 2022-05-04 | Vehant Technologies Private Limited | Single view x-ray baggage scanner |
| 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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