CN207096133U - Radiation checking system - Google Patents
Radiation checking system Download PDFInfo
- Publication number
- CN207096133U CN207096133U CN201720382803.7U CN201720382803U CN207096133U CN 207096133 U CN207096133 U CN 207096133U CN 201720382803 U CN201720382803 U CN 201720382803U CN 207096133 U CN207096133 U CN 207096133U
- Authority
- CN
- China
- Prior art keywords
- radiation
- detected
- image
- imaging apparatus
- scan pattern
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Landscapes
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
The utility model discloses a kind of radiation checking system, including：Radiation imaging apparatus；And control device, for controlling radiation imaging apparatus to carry out radiation scanning imaging to object to be detected with the first scan pattern, to obtain scan image, wherein, in the case of the reinspection suspect region for needing to recheck in scan image being present, radiation imaging apparatus is controlled to carry out radiation scanning imaging to part corresponding with rechecking suspect region on object to be detected using the second scan pattern, to obtain rechecking image, the second scan pattern is different from the first scan pattern.Thus, it is scanned by the reinspection suspect region rechecked with the second scan pattern different from the first scan pattern to needs, can accurately, easily determines that the reinspection suspect region that the needs in scan image are rechecked whether there is problem based on obtained reinspection image.
Description
Technical field
Radiography field is the utility model is related to, more particularly to a kind of radiation checking system.
Background technology
The large-scale target such as vehicle and goods is checked using radiant image be comparative maturity safety check technology, according to
Image-forming principle is different, mainly there is transmission-type radiant image and the major class of scattering formula radiant image two.
In general, transmission-type radiation image-forming system is mainly by radiation source, the detector positioned at scanned object opposite side
Composition, radiation source are used to launch flying spot beam to scanned object, and detector is used to receive the spoke from scanned object transmission
Signal is penetrated, received radiation signal has reacted the information such as density and the thickness of illuminated object, can show the internal junction of object
Structure, therefore the transmission image of object to be detected can be formed according to the radiation signal that detector detects.
The transmission image formed based on transmission-type radiant image principle is shown flying spot Shu Lu and worn on footpath is propagated
The projection information of saturating all substances, therefore the inspected object on the propagation path of flying spot beam is multiple superposition objects
When, the transmission image formed based on the transmission signal that detector receives can not differentiate the multiple objects to forward lap well.
Scattering formula radiation image-forming system is mainly imaged by collecting the ray of detected material volume scattering.Work as systematic collection
Scattering ray angle of scattering when between 90 °~180 °, referred to as back scattering imaging, can be with the characteristics of using back scattering
The material of low atomic number is highlighted on the image that system obtains.Object to be detected is carried out using back scattering imaging technology
During detection, it is unfavorable for detecting the contraband being hidden in behind the larger material of absorption coefficient (such as metal).
Therefore, either object to be detected is entered using transmission-type radiation image-forming system or back-scatter radiation imaging system
Row radiant image, the suspect region for needing to further confirm that is there may be in formed image, thus, it is desirable to which a kind of quickly have
The detection scheme that effect ground is rechecked to some suspect regions in object to be detected.
Utility model content
The utility model main purpose in provide it is a kind of can be easily and effectively to the suspect region in object to be detected
The radiation checking system rechecked.
According to one side of the present utility model, there is provided a kind of radiation checking system, for object to be detected it
Between have relative motion in the case of radiation monitoring is carried out to it, including：Radiation imaging apparatus；And control device, for controlling
Radiation imaging apparatus processed carries out radiation scanning imaging with the first scan pattern to object to be detected, to obtain scan image, wherein,
In the case of the reinspection suspect region for needing to recheck in scan image being present, control radiation imaging apparatus uses the second scanning mould
Formula carries out radiation scanning imaging to part corresponding with rechecking suspect region on object to be detected, to obtain rechecking image, the
Two scan patterns are different from the first scan pattern.
Preferably, the radiation checking system can also include：First comparator, it whether there is for comparing in scan image
Pixel value is less than the region of the first predetermined threshold, and pixel value is to recheck suspect region less than the region of the first predetermined threshold；With/
Or second comparator, it is more than the with the presence or absence of object edge quantity in unit area or edge length for comparing in scan image
The region of two predetermined thresholds, the region that object edge quantity or edge length are more than the second predetermined threshold in unit area are multiple
Examine suspect region；And/or the 3rd comparator, for comparing in scan image with the presence or absence of the equivalent atom ordinal number corresponding to pixel
More than the region of the 3rd predetermined threshold, the region that the equivalent atom ordinal number corresponding to pixel is more than the 3rd predetermined threshold is to recheck
Suspect region；And/or the 4th comparator, the part of the specific region for that will correspond in scan image in object to be detected are true
It is set to and rechecks suspect region.
Preferably, second sweep speed of the radiation imaging apparatus under the second scan pattern is more than under the first scan pattern
The first sweep speed, and/or, radiation imaging apparatus under the second scan pattern second scanning visual angle or second scanning
Visual angle combination is different from the first scanning visual angle or the first scanning visual angle combination under the first scan pattern, wherein, scan visual angle
To incide the direction of the launch of the beam of object to be detected and object to be detected and the direction of relative movement of radiation image-forming system
Between angle, and/or the energy of the second flying spot beam that radiation imaging apparatus is launched under the second scan pattern is big
In the energy for the first flying spot beam launched under the first scan pattern, and/or radiation imaging apparatus is in the second scanning
The roentgen dose X rate of second flying spot beam of lower transmitting is more than the first flying spot beam launched under the first scan pattern
Roentgen dose X rate.
Preferably, the first flying spot beam of object to be detected is incided under the first scanning visual angle under the first scan pattern
The direction of the launch substantially perpendicular to object to be detected and radiation image-forming system direction of relative movement, under the second scan pattern
The angle at the second scanning visual angle and the first scanning visual angle is more than or equal to 5 °.
Preferably, when detection means detects that object to be detected enters scanning area, control device control radiant image
Device launches flying spot beam, when detection means detects that object to be detected leaves scanning area, control device control radiation
Imaging device stops transmitting flying spot beam.
Preferably, radiation imaging apparatus can include：Radiation source, for launching the scanning for imaging to object to be detected
Beam；One or more detectors, for receiving the radiation signal from detected material volume scattering or transmission；Image processor,
For the radiation signal received according to one or more detectors, corresponding radiation image is generated.
Preferably, radiation checking system can also include：Positioner, filled for obtaining object to be detected with radiant image
Relative displacement information between putting, in order to which control system determines that the position for rechecking suspect region is believed according to relative displacement information
Breath.
Preferably, when positioner starts to carry out radiation scanning imaging to object to be detected for obtaining radiation imaging apparatus
Starting relative position between object to be detected, and/or radiation imaging apparatus stop radiating object to be detected
Termination relative position during scanning imagery between object to be detected, control system are used for according to starting relative position/or terminated
The image acquisition speed of relative displacement, image processor between relative position, object to be detected and radiation imaging apparatus,
Position coordinates of the length and reinspection suspect region of scan image in scan image, it is determined that rechecking the start bit of suspect region
Put and/or end position.
Preferably, radiation checking system can also include：Identity recognition device, the identity for obtaining object to be detected are believed
Breath, wherein, identity information includes following one or more：The attribute information of object to be detected；It whether there is in object to be detected
Need the reinspection suspect region rechecked；Recheck the positional information of suspect region；Mould of the object to be detected under the first scan pattern
Formula information.
Preferably, radiation checking system can also include：Drive device, for driving radiation imaging apparatus along planned orbit
Move back and forth.
Radiation checking system of the present utility model by with the second scan pattern different from the first scan pattern to need
The reinspection suspect region of reinspection is scanned, and can accurately, easily be determined based on obtained reinspection image in scan image
The reinspection suspect region for needing to recheck whether there is problem.
Brief description of the drawings
Disclosure illustrative embodiments are described in more detail in conjunction with the accompanying drawings, the disclosure above-mentioned and its
Its purpose, feature and advantage will be apparent, wherein, in disclosure illustrative embodiments, identical reference number
Typically represent same parts.
Fig. 1 is the schematic block diagram for the structure for showing the radiation checking system according to the embodiment of the utility model one.
Fig. 2 is to show the schematic diagram being scanned using radiation checking system of the present utility model to object to be detected.
Fig. 3 A, Fig. 3 B are to show to be scanned object to be detected in the obtained schematic diagram of scan image.
Fig. 4 is to show the workflow schematic diagram being scanned to object to be detected.
Embodiment
The preferred embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although the disclosure is shown in accompanying drawing
Preferred embodiment, however, it is to be appreciated that may be realized in various forms the disclosure without the embodiment party that should be illustrated here
Formula is limited.On the contrary, these embodiments are provided so that the disclosure is more thorough and complete, and can be by the disclosure
Scope is intactly communicated to those skilled in the art.
As described in the background section, transmission-type radiation image-forming system or back-scatter radiation imaging system are being utilized to quilt
When detection object carries out radiant image, the suspect region for needing to further confirm that is there may be in formed image.Therefore, this
Utility model proposes a kind of radiation monitoring system that easily and effectively can be rechecked to the suspect region in object to be detected
System.
Fig. 1 is the schematic block for the structure for showing the radiation checking system 100 according to the embodiment of the utility model one
Figure.
Referring to Fig. 1, radiation checking system 100 includes radiation imaging apparatus 110 and control device 120.
Radiation imaging apparatus 110 can be transmission-type radiation imaging apparatus or back-scatter radiation imaging device.And
And radiation checking system 100 can include one or more radiation imaging apparatus 110.
Radiation imaging apparatus 110 can include radiation source, one or more detectors and image processor.Radiation source is used
In launching the flying spot beam for imaging to object to be detected, one or more detectors are used to receive to be dissipated from object to be detected
The radiation signal penetrated or transmitted.It is different (back scattering imaging or transmission imaging) according to the image-forming principle of radiation imaging apparatus 110, visit
The arrangement of survey device is also different, and the specific set-up mode of detector is known to those skilled in the art, repeats no more here.
Image processor is used for the radiation signal received according at least one detector array, generates corresponding radiation image.In addition,
Radiation imaging apparatus 110 can also include other auxiliary devices such as collimater, repeat no more here.
Control device 120 is used to control radiation imaging apparatus 110 to radiate object to be detected with the first scan pattern
Scanning imagery, to obtain scan image.In the case of the reinspection suspect region for needing to recheck in scan image being present, control dress
120 control radiation imaging apparatus 110 are put with the second scan pattern to portion corresponding with rechecking suspect region on object to be detected
Divide and carry out radiation scanning imaging, to obtain rechecking image, the second scan pattern is different from the first scan pattern.
In the case of the reinspection suspect region for needing to recheck in scan image being present, control device 120 can control spoke
Penetrate imaging device 110 and spoke only is carried out to part corresponding with rechecking suspect region on object to be detected using the second scan pattern
Scanning imagery is penetrated, radiation imaging apparatus 110 can also be controlled complete using being carried out using the second scan pattern to object to be detected
Radiation scanning imaging.
Used radiation imaging apparatus 110 can be a set of radiant image under first scan pattern and the second scan pattern
Device or two sets of independent radiation imaging apparatus.Further, the first scan pattern and the second scan pattern is lower is made
Radiation imaging apparatus 110 can be based on transmission-type radiation imaging apparatus made of transmission-type image-forming principle or
Based on back-scatter radiation imaging device made of back scattering imaging principle, can also be based on made of two kinds of radiant image principles
The radiation imaging apparatus that transmission-type radiant image and can carries out back scattering imaging can be carried out.
Second scan pattern is different from the first scan pattern.First scan pattern can be considered as what object to be detected was carried out
Whole detection, the second scan pattern can be considered as the detection of the reinspection suspect region to needing to recheck on object to be detected, therefore
The sweep parameter of second scan pattern should be set more fine, or scanning visual angle or the combination of scanning visual angle are swept different from first
Pattern is retouched, can conveniently, accurately to cause reinspection image of the security staff based on the sweep parameter formation under the second scan pattern
Ground determines to recheck whether suspect region is implicitly present in problem.
Herein can be by controlling sweep speed, scanning visual angle or scanning visual angle combination, the energy of flying spot beam, scanning
One or more sweep parameters such as the roentgen dose X rate of beam, to cause the second scan pattern to be different from the first scan pattern,
Design parameter sets as follows.
1st, the second sweep speed under the second scan pattern can be less than the first sweep speed under the first scan pattern, by
This is higher based on the reinspection image resolution ratio that the second sweep speed is formed.
2nd, the second scanning visual angle under the second scan pattern or the second scanning visual angle combination can be differently configured from the first scanning mould
The first scanning visual angle or the first scanning visual angle combination under formula, wherein, scanning visual angle is the beam for inciding object to be detected
The direction of the launch and object to be detected relative to the angle between the direction of motion of radiation image-forming system.By with different from first
The scanning visual angle of scan pattern or the combination of scanning visual angle are scanned to rechecking suspect region, can obtain different visual angles or visual angle
Reinspection image under combination, it is possible thereby to solve due to multiple superposition objects in object to be detected be present, caused by scan image
It is middle the problem of reinspection suspect region for needing to recheck to be present.
As an alternative embodiment of the present utility model, under the first scan pattern first scanning visual angle under incide by
The direction of the launch of first flying spot beam of detection object may be substantially perpendicular to object to be detected and radiation image-forming system
Direction of relative movement, the second scanning visual angle under the second scan pattern can have certain angle α, α with the first scanning visual angle
Angular range can be set according to actual conditions, such as α >=5 °.
3rd, the energy for the second flying spot beam launched under the second scan pattern, which can be more than under the first scan pattern, to be launched
The first flying spot beam energy, and/or, the roentgen dose X for the second flying spot beam launched under the second scan pattern
Rate can be more than the roentgen dose X rate for the first flying spot beam launched under the first scan pattern.Thus, it is possible to so that based on the
The reinspection image that two sweep speeds are formed becomes apparent from.
To sum up, can be by controlling when being checked using radiation checking system of the present utility model object to be detected
Device 120 controls radiation imaging apparatus 110 to be detected using the first scan pattern to it first, in the scanning figure that detection obtains
, can be by controlling the sweep parameter of radiation imaging apparatus 110, using not when the reinspection suspect region for needing to recheck as in be present
The second scan pattern for being same as the first scan pattern is scanned to the part for corresponding to reinspection suspect region on object to be detected
Imaging, to obtain corresponding to the reinspection image for the part for rechecking suspect region on object to be detected.By to recheck image do into
One step is analyzed, it is possible to determines that the reinspection suspect region in scan image whether there is problem.
As shown in figure 1, radiation checking system 100 can also include following one or more servicing units.
First, comparator
Comparator 130 can be entered based on one or more comparison rules to the scan image obtained based on the first scan pattern
Row judges, to determine whether to have the reinspection suspect region for needing to recheck.It can specifically be sentenced based on following one or more
Disconnected rule is determined in scan image with the presence or absence of needing the reinspection suspect region rechecked.
1. it is to recheck suspect region to judge the region that pixel value is less than the first predetermined threshold in scan image.
Propagated as it was noted above, flying spot Shu Lu is shown based on the image that transmission-type radiant image principle is formed
The projection information of all substances penetrated on footpath, therefore the inspected object mass thickness on the propagation path of flying spot beam
When bigger, through object to be detected beam intensity than relatively low, hide suspicion thing therein and be just difficult to be identified.Cause
The larger region of mass thickness in object to be detected, can be considered as the reinspection suspect region for needing to recheck, you can that will wear by this
The region that transmitted intensity after saturating object to be detected is less than certain threshold value is suspect region, and penetrates the ray after object to be detected
Intensity is directly proportional to the intensity based on the pixel formed by the ray received on scan image, therefore can be by scan image
Pixel value is defined as rechecking suspect region less than the region of the first predetermined threshold.That is, comparator 130 can be used for comparing
It is less than the region of the first predetermined threshold in scan image with the presence or absence of pixel value, pixel value is less than the region of the first predetermined threshold
To recheck suspect region.
2. judge that object edge quantity or edge length are more than the area of the second predetermined threshold in unit area in scan image
Domain is reinspection suspect region.
In unit area there are multiple objects in a fairly large number of region of object edge in scan image, and in object to be detected
The intensive existing region of object belongs to the suspicion thing hidden in the larger region of suspicion and is difficult to be identified, therefore will directly can sweep
Object edge quantity is defined as rechecking suspect region more than the region of predetermined threshold in unit area as in for tracing.
The larger region of the edge length of object in unit area in scan image, in hide suspicion thing be also difficult to be known
, do not fall within the larger region of suspicion, thus can also by scan image in unit area object edge length be more than it is predetermined
The region of threshold value is defined as rechecking suspect region.
That is, comparator 130 can be used for comparing in scan image with the presence or absence of object edge number in unit area
Amount or edge length are more than the region of the second predetermined threshold, and it is pre- to be more than second for object edge quantity or edge length in unit area
The region for determining threshold value is to recheck suspect region.
3. it is reinspection to judge the region that the equivalent atom ordinal number in scan image corresponding to pixel is more than the 3rd predetermined threshold
Suspect region.
Some special nuclear materials, if uranium (U, atomic number 92), plutonium (Pu, atomic number 94) etc. are high Z-material,
Also it is used for the material of alpha ray shield, if tungsten (W, atomic number 74), lead (Pb, atomic number 82) etc. are also high Z-material.
Therefore, can be with when the equivalent atom ordinal number of certain area pixel in scan image is more than certain threshold value (atomic number 82 of such as lead)
It is high Z-material to think the region material, then may have special nuclear material in the region or be concealed with other radioactive substances (such as
Cs137, Co60 etc.), now the region can be assumed that to need the reinspection suspect region rechecked.Thus, comparator 130 can be used
In the region for being more than the 3rd predetermined threshold in scan image with the presence or absence of the equivalent atom ordinal number corresponding to pixel for comparing, as
The region that equivalent atom ordinal number corresponding to element is more than the 3rd predetermined threshold is to recheck suspect region.Wherein, the 3rd predetermined threshold
The concrete numerical value of value can be set according to actual conditions, and the equivalent atom ordinal number in scan image corresponding to pixel can be by more
Kind mode determines, such as dual intensity method can be utilized to obtain equivalent atom ordinal number, realizes and carries out material identification to object to be detected, makees
For an example of the present utility model, equivalent atom sequence can be obtained using the technical scheme disclosed in CN101019042A
Number.
4. part corresponding with the specific region in object to be detected in scan image is judged to recheck suspect region.
Can according to the self attributes of object to be detected, using the larger specific region in suspect region in object to be detected as
Recheck suspect region.For example, when object to be detected is container or compartment, can be by the front and rear wall in compartment, top plate bottom plate etc.
Region is set as needing the reinspection suspect region rechecked, and judges whether the effective atomic number corresponding to the area pixel is less than
Certain threshold value (such as 8), is defined as suspicion area if threshold value is less than.Therefore, comparator 130 can be also used in scan image
It is defined as rechecking suspect region corresponding to the part of the specific region in object to be detected.
To sum up, comparator 130 can be compared based on above-mentioned one or more judgment rules to scan image, to determine
Wherein with the presence or absence of reinspection suspect region.As an alternative embodiment of the present utility model, radiation checking system 100 can wrap
One or more comparators 130 are included, different comparators 130 can determine to sweep using the different judgment rules addressed above
Tracing is as in the presence or absence of reinspection suspect region.For example, radiation checking system 100 can be with four comparators.
2nd, detection means
Check device 140 is used to detect whether object to be detected enters and whether leave scanning area, and it can be pair
Penetrate formula light curtain or laser radar, vision sensor, proximity transducer etc..
When detection means 140 detects that object to be detected enters scanning area, control device 120 can control radiation into
As device 110 launches flying spot beam, when detection means 140 detects that object to be detected leaves scanning area, control device
120 can control radiation imaging apparatus 110 to stop transmitting flying spot beam.Detection means 140 can be by two sub- detection means
Form, two sub- detection means can be separately positioned on the both sides of the transmitting radiation beam of radiation imaging apparatus 110, be respectively intended to examine
Survey whether object to be detected enters scanning area, whether object to be detected leaves scanning area.
3rd, positioner
Positioner 150 is used to obtain the relative displacement information between object to be detected and radiation imaging apparatus 110, so as to
The position of part corresponding with rechecking suspect region on object to be detected is determined according to relative displacement information in control system 120
Information.
Specifically, positioner 150 can obtain radiation imaging apparatus 110 and start under the first scan pattern to tested
Starting relative position during survey object progress radiation scanning imaging between object to be detected, and/or radiation imaging apparatus
110 stop the termination relative position between object to be detected during to object to be detected progress radiation scanning imaging
Control system 120 object to be detected can be scanned according to radiation imaging apparatus 110 imaging sweep speed,
Into the length of scan image, the acquisition speed of scan image, starting relative position and/or terminate relative position, it is determined that tested
Survey the original position and/or end position of part corresponding with rechecking suspect region on object.
In specific implementation, positioner 150 can directly be gathered with predetermined sample frequency positioner 140 relative to
The relative displacement data of object to be detected.The method directly gathered be used for portable scan pattern it is more convenient, for example, radiation into
As device 110 can be integrated on moveable platform, radiation imaging apparatus 110 can move integrally with moveable platform.It is fixed
Position device 150 can use encoder, and encoder can be arranged at the travel mechanism of moveable platform.Using moveable platform as
Vehicle, exemplified by encoder is arranged at the axletree of vehicle, encoder can be using some position on ground as the origin of coordinates, example
Such as can be using the Exit positions of the flying spot beam of radiation imaging apparatus 110 as the origin of coordinates.So, radiation imaging apparatus is worked as
When 110 movements are scanned, encoder starts counting up, and is the angle of wheel rotation corresponding to it, i.e. correspondence proving equipment is relative
The distance of origin of coordinates movement.Thus, vehicle often moves the preset distance vehicle wheel rotation one of vehicle (can be enclose), and encoder is just
Once counted.In addition, positioner 150 can also use the positioning of the various structures such as range sensor, displacement transducer
Equipment.
4th, identity recognition device
Identity recognition device 160 can be used for the identity information for obtaining object to be detected.Identity information described herein can
Whether there is the reinspection suspect region for needing to recheck in the attribute information including object to be detected, object to be detected, recheck and dislike
Doubt one or more in all multi informations such as the pattern information of the positional information, object to be detected in region under the first scan pattern
.Control device 120 can be according to the identity information of the object to be detected indicated by identity recognition device 160, it is determined whether right
Scan pattern when object to be detected is rechecked and rechecked.
Identity recognition device 160 can be license plate recognition device LPR, container number identification device CCR, bar code read set
Standby, Quick Response Code reads equipment, RFID reads a variety of devices such as equipment.It is bar code reading taking equipment, Quick Response Code in identity recognition device
, it is necessary to which object to be detected carries corresponding bar code, Quick Response Code or RFID label tag, bar when reading equipment either RFID reading equipment
The identity information related to object to be detected is stored with code, Quick Response Code or RFID label tag.
5th, drive device
Because radiation imaging apparatus 110 is in the case of being subjected to displacement between object to be detected, realize to being detected
The scanning of object, therefore radiation image-forming system 100 can also include drive device 170.Drive device 170 can be used for driving
Radiation imaging apparatus 110 moves along planned orbit, is subjected to displacement with realizing between radiation imaging apparatus 110 and object to be detected.
Wherein, preferably, drive device 170 can be used for driving radiation imaging apparatus 110 to move back and forth along planned orbit.
So far, the structure that radiation checking system 100 of the present utility model can have is schematically illustrated with reference to Fig. 1.Below
The process just detected in conjunction with specific embodiments using radiation checking system of the present utility model to object to be detected is done into one
Walk explanation.
As shown in Fig. 21 is scan channel, 2 be radiation imaging apparatus, for object to be detected carry out radiation scanning into
Picture.By drive device (not shown) radiation imaging apparatus 2 can be driven to be moved reciprocatingly along scan channel 1.
The left side of flying spot beam is emitted in radiation imaging apparatus 2 can install the first detection unit 3, be filled in radiant image
The second detection unit 4 can be installed by putting the right side of 2 outgoing flying spot beams.First detection unit 3 and second described herein is examined
It is suitable with the detection means addressed above to survey unit 4.
First detection unit 3 and the second detection unit 4 can be that correlation light curtain or laser radar, vision pass
Sensor, proximity transducer etc..First detection unit 3 and the second detection unit 4 can be used for detecting whether object to be detected enters
Enter detection zone and leave detection zone.
5 arrange to be arranged in the scale grating of scan channel side, or magnetic scale grating, or by default spacing
Station location marker block, corresponding grating reading head or detection sensor (not shown) can be installed on radiation imaging apparatus 2
On, the current location for Scanning Detction radiation imaging apparatus 2.Wherein, it can also directly use and be arranged on radiation imaging apparatus 2
The encoder being connected with drive device as positioner, other relative displacement transducers, distance measuring sensor can also be used
Substituted Deng positioner.6 be object to be detected, is herein vehicle.7 be identity recognition device, for obtaining detected material body
Part information, the porch of scan channel 1 can be installed on.
When starting to be scanned imaging to object to be detected 6, spoke can be controlled by control system (not shown)
Penetrate imaging device 2 to run with the first scan pattern, such as can be quick single-view pattern, speed 0.8m/s, outgoing is swept
Retouch direction of relative movement of the direction of the launch substantially perpendicular to object to be detected 1 and radiation imaging apparatus 2 of beam.
As an example, control system can control drive device to work so that radiation imaging apparatus 2 starts to transport from right to left
Dynamic, speed is ramped up to 0.8m/s, when the first detection unit 3 (can be correlation light curtain) detects object to be detected 6 i.e.
When will enter scanning area, the radiographic source of control system control radiation imaging apparatus 2 sends the beam for scanning imagery, spoke
The image collection module for penetrating imaging device 2 starts to obtain the view data of detector generation.Meanwhile magnetic grating scale 5 can be passed through
Obtain the current location information of radiation imaging apparatus.Hereafter radiation imaging apparatus 2 continues to left movement, when the second detection unit 4
When detecting that object to be detected 6 has been moved off scanning area, the radiographic source of control system control radiation imaging apparatus 2 stops sending
Ray, the image collection module of radiation imaging apparatus 2 stop obtaining view data.Control system control drive device is gradually slowed down
Until the stop motion of radiation imaging apparatus 2.In addition, control system can also control the radiographic source of radiation imaging apparatus 2 to go out in advance
Beam is penetrated, when the image collection module of radiation imaging apparatus 2 starts to obtain the view data of detector generation, to radiate
The transmitted intensity that the radiographic source of imaging device 2 is sent is in a more stable state.
, can be by suspect region mark module or manually to needing that rechecks to answer in scan image after scan image is obtained
Inspection suspect region is marked.Wherein when being marked, together it can also will enter rower without the other suspect regions rechecked
Remember, and recheck suspect region and other suspect regions to be marked in a different manner.As shown in Figure 3A, 8 be acquisition
Scan image, orthogonal rectangle shown in 9 for need recheck suspect region mark, 10 be suspicion thing.13 be other suspect regions
Mark, the region is without rechecking.
Control system can be according to the sweep speed of scan image, it is assumed that is V1(meter per second), image length Limg(row), figure
As acquisition speed Ld(row/second), positioner record start scanning imagery when position P1, in scan image, recheck suspicion
The left border abscissa S of area's mark 90, right side boundary abscissa S1.It can be calculated, it is necessary to which the reinspection suspect region 9 rechecked is risen
Beginning, position was：
Recheck suspect region 9 end position be：
When being rechecked to object to be detected 6, by control system drive device can be controlled gradually to accelerate to the right pre-
Fixed reinspection speed, such as 0.1m/s.Control system can be according to the current location information detected by positioner, judgement
Correspond to the original position for rechecking suspect region 9 on no arrival object to be detected, if it is decided that reach the position, then can control
The radiation source of radiation imaging apparatus 2 sends radiation beam and is scanned imaging, while the image collection module of radiation imaging apparatus 2 is opened
Begin to obtain image.When reaching the end position for rechecking suspect region 9, control system can control the spoke of radiation imaging apparatus 2
Penetrate source and stop transmitting radiation beam, now the image collection module of radiation imaging apparatus 2 stops obtaining image, and control system can be same
When control drive device be gradually decelerated to stopping.
In some cases, initial sweep position is in the left side of scan position, i.e., scanned imagery device is from the upper figures of Fig. 2
Start to scan to the right on the left of truck, then position during positioner record beginning scanning imagery is P0, recheck rising for suspect region 9
Beginning, position was：
Recheck suspect region 9 end position be：
In certain embodiments, positioner not only records position when starting scanning imagery, and also record end is scanned into
As when position.The position in left side is designated as P0, the position on right side is designated as P1, then formula (1) can use formula (4) represent, formula
(2) formula (3) can be used to represent.
In some cases, multiple reinspection suspect regions for needing to recheck are there may be in scan image.As shown in Figure 3 B,
Occur 3 suspicion areas for needing to recheck in scan image 8 simultaneously, be 9,11,12 respectively.In this case, it is likely that occur
The original position that two or more recheck suspect region is overlapping, all overlapping to the range section of end position, or even one
The starting position in suspicion area to end position scope in the range of the starting position in another suspicion area to end position, this
The beginning and end position joint account of reinspection suspect region for rechecking these needs is needed, takes the leftmost side position in these regions
The leftward position for needing to recheck region is set to, the right-most position for taking these regions is the right positions for needing to recheck region.
As shown in Figure 3 B, recheck the left side abscissa of suspect region 9 and be designated as S0, right side abscissa is designated as S1, recheck suspect region
11 left side abscissas are designated as S2, right side abscissa is designated as S3, recheck the left side abscissa of suspect region 12 and be designated as S4, recheck suspicion area
Abscissa is designated as S on the right side of domain5.Wherein recheck suspect region 9 and recheck the original position of suspect region 11 to the model of end position
Enclose and partly overlap, it is necessary to merge, take 11 left side abscissa S2For the left side abscissa after merging, 9 right side abscissa S is taken1For
Right side abscissa after merging.
With reference to Fig. 2, illustrated in case of radiation imaging apparatus 2 carries out reinspection scanning from left to right.After merging
The scope for needing to recheck is changed into, and is with rechecking 12 corresponding original position of suspect region：
It is with rechecking 12 corresponding end position of suspect region：
With rechecking suspect region 9,11 corresponding original positions are：
With rechecking suspect region 9,11 corresponding end positions are：
When being rechecked to object to be detected, drive device can be controlled to be accelerated to the right by gradually by control system pre-
Fixed reinspection speed, such as 0.1m/s, continue to move right, the present bit confidence that control system detects according to positioner
Breath, judge whether to reach the original position (referring to formula 5) for rechecking suspect region 12, if reaching the position, control radiation
Imaging device sends ray and is scanned imaging, and starts to obtain image.Radiation imaging apparatus continues to move ahead, and dislikes when reaching to recheck
When doubting end position (referring to the formula 6) in area 12, control system control radiation imaging apparatus stopping sends ray and is scanned into
Picture simultaneously stops obtaining image.Hereafter control system control radiation imaging apparatus continues to move ahead, and suspect region 9 and 11 is rechecked when reaching
During corresponding original position (referring to formula 7), then control radiation imaging apparatus to send ray again and be scanned imaging and start
Obtain image.Radiation imaging apparatus continues to move ahead, when end position corresponding to arrival reinspection suspicion area 9 and 11 (referring to formula 8)
When, control system control radiation imaging apparatus stopping sends ray and is scanned imaging and stops obtaining image.So far complete
Reinspection to object to be detected, control system can control radiation imaging apparatus to be gradually decelerated to stopping.
As an alternative embodiment of the present utility model, radiation image-forming system of the present utility model is being utilized to scanning figure
Multiple reinspection suspect regions for needing to recheck as present in are rechecked, and after obtaining multiple reinspection images, can be used a variety of
Mode is bound multiple reinspection images with corresponding reinspection suspect region.For example, the filename for rechecking image can be ordered
The corresponding left side abscissa for rechecking suspect region in the scan image that entitled first scan pattern obtains, can also use one
Single file record each rechecks the left side abscissa that suspect region is rechecked corresponding to image, at the same time it can also record first
The coordinate position and size of suspect region are rechecked in the scan image that scan pattern obtains.
As an alternative embodiment of the present utility model, radiation image-forming system of the present utility model completes first mode
Scanning imagery after, interpretation can be carried out to the scan image of acquisition by figure inspection person.The reinspection suspicion that needs in figure are rechecked
Area marking needs the reinspection suspect region mark rechecked, and other are marked without the suspicion area other suspect regions of mark rechecked
Note.As shown in Figure 3 B, 9,11,12 is need the reinspection suspect region rechecked, and it is labeled as orthogonal rectangle, and 13 be without rechecking
Other suspect regions, it is labeled as round rectangle.Figure inspection person can scheme inspection knot accordingly to each terrain feature edit without rechecking
By.Then figure inspection person can confirm that the object to be detected needs to recheck.After control system receives reinspection instruction, phase can be performed
The reinspection flow answered.In certain embodiments, before confirming to recheck, figure inspection person can select the specific works of the second scan pattern
Parameter, for example, sweep speed, scanning visual angle etc..
In certain embodiments, in order to improve the service efficiency of radiation image-forming system of the present utility model, it can set and treat
Area and Accreditation Waiting Area are examined, specific workflow is as shown in figure 4, Fig. 4 is to show the complete stream being scanned to object to be detected
Journey.
Referring to Fig. 4, object to be detected waits in line radiation scanning inspection (step S210) in region to be checked.Work as detected material
When body enters scan channel (step S220), object to be detected identity (step S230), institute can be obtained by identity acquisition device
The identity information of acquisition can include the identity information related to object to be detected, for example, the attribute information of object to be detected, being
No first scan pattern that has been based on has carried out preliminary scan, the sweep parameter of preliminary scan, preliminary scan to object to be detected
Scan image in the presence or absence of the positional information etc. rechecked suspect region and recheck suspect region for needing to recheck.
Radiation image-forming system can be judged according to the identity information of acquired object to be detected object to be detected need into
Row is rechecked or initial survey (step S240), in the case where judging that needs are rechecked, can use the second scan pattern to quilt
With rechecking that suspect region is corresponding partly carries out radiation scanning imaging (step S245) in detection object, judging to need to carry out just
In the case of inspection, the first scan pattern can be used to carry out radiation scanning imaging (step S250) to object to be detected.Obtaining
After scan image or reinspection image, by scan image or image can be rechecked with being tied up by the identity information of object to be detected
Fixed (step S260).
After object to be detected completes radiation scanning imaging, conclusion can be examined without waiting for the figure of figure inspection person, leave scanning
Passage, into waiting area Waiting Graph inspection conclusion (step S270).Other follow-up objects to be detected can enter scan channel, enter
The same radiation scanning inspection of row.
When figure inspection conclusion instruction need not recheck, waiting area is may exit off in the object to be detected that waiting area waits,
Into other regions (step S290), when figure inspection conclusion instruction needs to recheck, needed in the object to be detected that waiting area waits
Area to be checked is reentered to wait in line to recheck (step S210).Wherein, if object to be detected obtains the conclusion for needing to recheck,
Object to be detected can be needed to the information updating rechecked into its identity information, in order to which control system can be known according to identity
The identity information for the object to be detected that other device obtains, obtain will carry out radiation scanning inspection object to be detected whether be into
The object to be detected that row is rechecked, and control radiation scanning apparatus to carry out corresponding radiation scanning inspection.Such as work as object to be detected
During into passage, control system obtains the speed V of its first mode inspection according to the identity information of object to be detected1(meter per second),
Image length Limg(row), image acquisition speed Ld(row/second), positioner record start scanning imagery when position P1, sweep
Direction is retouched from right to left, it is necessary to the suspicion area left border abscissa S rechecked0, right side boundary abscissa S1.Scanning side during reinspection
To be also from right to left, start scanning position be P2, then when rechecking, the original position for rechecking suspect region is：
Recheck suspect region end position be：
Above it is described in detail by reference to accompanying drawing according to radiation checking system of the present utility model.
It is described above each embodiment of the present utility model, described above is exemplary, and non-exclusive, and
And it is also not necessarily limited to disclosed each embodiment.In the case of without departing from the scope and spirit of illustrated each embodiment, for
Many modifications and changes will be apparent from for those skilled in the art.The choosing of term used herein
Select, it is intended to best explain the principle, practical application or the improvement to the technology in market of each embodiment, or lead this technology
Other those of ordinary skill in domain are understood that each embodiment disclosed herein.
Claims (9)
- A kind of 1. radiation checking system, it is characterised in that including：Radiation imaging apparatus, for carrying out radiation scanning imaging to object to be detected with the first scan pattern, to obtain scanning figure Picture, and in the case of the reinspection suspect region rechecked in the scan image in the presence of needs, with the second scan pattern to institute State and carry out radiation scanning imaging with rechecking the corresponding part in suspect region to obtain rechecking image on object to be detected, described the Two scan patterns are different from first scan pattern；AndControl device, for controlling the radiation imaging apparatus between first scan pattern and second sweep mode Switching.
- 2. radiation checking system according to claim 1, it is characterised in thatSecond sweep speed of the radiation imaging apparatus under second scan pattern is more than in first scan pattern Under the first sweep speed, and/or,Second scanning visual angle or second scanning visual angle combination of the radiation imaging apparatus under second scan pattern are different In the first scanning visual angle under first scan pattern or the first scanning visual angle combination, wherein, scanning visual angle is to incide Folder between the direction of the launch and object to be detected of the beam of object to be detected and the direction of relative movement of radiation image-forming system Angle, and/orThe energy for the second flying spot beam that the radiation imaging apparatus is launched under second scan pattern is more than described The energy for the first flying spot beam launched under first scan pattern, and/orThe roentgen dose X rate for the second flying spot beam that the radiation imaging apparatus is launched under the described second scanning is more than in institute State the roentgen dose X rate for the first flying spot beam launched under the first scan pattern.
- 3. radiation checking system according to claim 2, it is characterised in thatThe direction of the launch of the first flying spot beam of object to be detected is incided under the first scanning visual angle under first scan pattern Substantially perpendicular to object to be detected and the direction of relative movement of radiation image-forming system,The angle at the second scanning visual angle and the described first scanning visual angle under the second scan pattern is more than or equal to 5 °.
- 4. radiation checking system according to claim 1, it is characterised in that also include：Detection means,When the detection means detects that object to be detected enters scanning area, the control device controls the radiant image Device launches flying spot beam,When the detection means detects that object to be detected leaves scanning area, the control device controls the radiant image Device stops transmitting flying spot beam.
- 5. radiation checking system according to claim 1, it is characterised in that the radiation imaging apparatus includes：Radiation source, for launching the flying spot beam for imaging to the object to be detected；One or more detectors, for receiving the radiation signal from the detected material volume scattering or transmission；Image processor, for the radiation signal received according to one or more of detectors, generate corresponding radiation diagram Picture.
- 6. radiation checking system according to claim 5, it is characterised in that also include：Positioner, for obtaining the relative displacement information between the object to be detected and the radiation imaging apparatus, so as to The positional information of the reinspection suspect region is determined according to the relative displacement information in the control system.
- 7. radiation checking system according to claim 6, it is characterised in thatThe positioner starts to carry out radiation scanning imaging to the object to be detected for obtaining the radiation imaging apparatus When and the object to be detected between starting relative position, and/or the radiation imaging apparatus stops to described tested Termination relative position during survey object progress radiation scanning imaging between the object to be detected,The control system be used for according to it is described starting relative position/or it is described termination relative position, the object to be detected with The image acquisition speed of relative displacement, described image processor between the radiation imaging apparatus, the scan image Length and it is described recheck position coordinates of the suspect region in the scan image, determine rising for the reinspection suspect region Beginning position and/or end position.
- 8. radiation checking system according to claim 1, it is characterised in that also include：Identity recognition device, for obtaining The identity information of the object to be detected, wherein, the identity information includes following one or more：The attribute information of the object to be detected；With the presence or absence of the reinspection suspect region for needing to recheck in the object to be detected；Recheck the positional information of suspect region；Pattern information of the object to be detected under the first scan pattern.
- 9. the radiation checking system according to any one of claim 1 to 8, it is characterised in that also include：Drive device, for driving the radiation imaging apparatus to be moved back and forth along planned orbit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720382803.7U CN207096133U (en) | 2017-04-12 | 2017-04-12 | Radiation checking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720382803.7U CN207096133U (en) | 2017-04-12 | 2017-04-12 | Radiation checking system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207096133U true CN207096133U (en) | 2018-03-13 |
Family
ID=61550326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720382803.7U Ceased CN207096133U (en) | 2017-04-12 | 2017-04-12 | Radiation checking system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207096133U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106950232A (en) * | 2017-04-12 | 2017-07-14 | 北京君和信达科技有限公司 | Radiation testing method and radiation checking system |
| CN109407165A (en) * | 2018-03-09 | 2019-03-01 | 同方威视技术股份有限公司 | Expandable type millimeter wave safe examination system, scanning element and the method that safety inspection is carried out to human body |
| WO2022109867A1 (en) * | 2020-11-25 | 2022-06-02 | Shenzhen Xpectvision Technology Co., Ltd. | Imaging systems |
| WO2024032342A1 (en) * | 2022-08-08 | 2024-02-15 | 同方威视技术股份有限公司 | Suspicious article positioning system and method |
-
2017
- 2017-04-12 CN CN201720382803.7U patent/CN207096133U/en not_active Ceased
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106950232A (en) * | 2017-04-12 | 2017-07-14 | 北京君和信达科技有限公司 | Radiation testing method and radiation checking system |
| CN109407165A (en) * | 2018-03-09 | 2019-03-01 | 同方威视技术股份有限公司 | Expandable type millimeter wave safe examination system, scanning element and the method that safety inspection is carried out to human body |
| WO2022109867A1 (en) * | 2020-11-25 | 2022-06-02 | Shenzhen Xpectvision Technology Co., Ltd. | Imaging systems |
| WO2024032342A1 (en) * | 2022-08-08 | 2024-02-15 | 同方威视技术股份有限公司 | Suspicious article positioning system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106950232A (en) | Radiation testing method and radiation checking system | |
| CN207096133U (en) | Radiation checking system | |
| CN103064125B (en) | For improving the system and method for the people screening guided | |
| CN1327249C (en) | Method and device for examining an object | |
| CN104254769B (en) | High-speed secure inspection system | |
| AU2002307053B2 (en) | X-ray inspection system | |
| CN101501477B (en) | X-ray inspection with contemporaneous and proximal transmission and backscatter imaging | |
| RU2444723C2 (en) | Apparatus and method of inspecting objects | |
| US5910973A (en) | Rapid X-ray inspection system | |
| CN100422769C (en) | Adaptive scanning of materials using nuclear resonance fluorescence imaging | |
| US20030169843A1 (en) | Apparatus and method for detecting items in objects | |
| CN101606084A (en) | Check system and method | |
| AU2002307053A1 (en) | X-ray inspection system | |
| US10585052B2 (en) | Security inspection apparatus and method | |
| CN1224495A (en) | Straddle inspection system | |
| CN105333826A (en) | Quick vehicle inspection method and system | |
| EP3816615A1 (en) | Radiation inspection system and radiation inspection method | |
| US20210181369A1 (en) | Three-dimensional x-ray baggage scanner | |
| CN107664774A (en) | radiation checking system and method | |
| CN106896120A (en) | Multi-modal detecting system and method | |
| WO2024002340A1 (en) | Method and system for tracking target object in object to be inspected | |
| CN107228869A (en) | Radiation checking system and radiation testing method | |
| CN207263667U (en) | Radiation checking system | |
| CN203981903U (en) | X ray backscattered channel formula vehicle safe examination system based on distributed source of radiation | |
| CN107228868A (en) | Radiation checking system and radiation testing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20210430 Decision number of declaring invalidation: 49500 Granted publication date: 20180313 |
|
| IW01 | Full invalidation of patent right |