CN205506718U - Dual intensity detector device, system - Google Patents
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- CN205506718U CN205506718U CN201521128077.3U CN201521128077U CN205506718U CN 205506718 U CN205506718 U CN 205506718U CN 201521128077 U CN201521128077 U CN 201521128077U CN 205506718 U CN205506718 U CN 205506718U
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Abstract
The utility model relates to a dual intensity detector device, system belongs to the radiation monitoring field. The device includes: the first pixel detector array who is close to gamma ray source one side for survey the gamma ray source photon, the second pixel detector array of gamma ray source one side keeps away from for survey the gamma ray source photon behind first pixel detector array, wherein first pixel detector array includes the first pixel detector of multirow, it includes first sensitive medium, a light -sensitive device, be used for gamma ray source incident first incident surface and with the the first window of a light -sensitive device coupling, first incident surface is towards the gamma ray source, second pixel detector array includes single second pixel detector, and it includes the sensitive medium of second, the 2nd light -sensitive device, the second incident surface reaches and the second window of the 2nd light -sensitive device coupling, every second pixel detector is the same rather than the elementary area of a plurality of first pixel detector that the dead ahead corresponds. This discernment, promotion space resolution and the effective detection of reinforcing to the ray that openly can take into account material effective atomic number simultaneously.
Description
Technical field
This utility model relates to radiation monitoring technology, in particular to dual-energy detector device, system.
Background technology
In the X-ray inspection system of megavolt level, the resolution capability and the spatial resolving power that promote the effective atom of material are two important developing direction.
Accordingly, it would be desirable to a kind of new dual-energy detector device, system.
Being only used for strengthening the understanding of background of this disclosure in information above-mentioned disclosed in described background section, therefore it can include not constituting the information to prior art known to persons of ordinary skill in the art.
Utility model content
Disclosure one dual-energy detector device, system, it is possible to promote the ability of Object Classification and improve spatial discrimination index.
Other characteristics of the disclosure and advantage will be apparent from by detailed description below, or partially by the practice of the disclosure and acquistion.
According to an aspect of this disclosure, it is provided that a kind of dual-energy detector device, including: near the first pixel detector array of radiographic source side, there is for detection the radiographic source photon of the first energy；Away from the second pixel detector array of described radiographic source side, for the detection radiographic source photon with the second energy after described first pixel detector array, described second can be higher than described first energy.Wherein said first pixel detector array includes ranked first pixel detector more, described first pixel detector include the first sensitive medium, the first light-sensitive device, for incident first plane of incidence of described radiographic source and the first window that couples with described first light-sensitive device, described first plane of incidence is towards described radiographic source；Described second pixel detector array include single second pixel detector, described second pixel detector include the second sensitive medium, the second light-sensitive device, for incident second plane of incidence of described radiographic source and the second window of coupling with described second light-sensitive device；The elemental area of multiple first pixel detectors that each second pixel detector is corresponding with its dead ahead is identical.
An embodiment according to the disclosure, wherein said first sensitive medium is primary scintillator, each first pixel detector includes rectangular described primary scintillator and is coated with the first reflecting layer of described primary scintillator, described first reflecting layer exposes described first window, and the side relative with described first window of each first pixel detector is described first plane of incidence.
An embodiment according to the disclosure, wherein said second sensitive medium is secondary fluor, each second pixel detector includes rectangular described secondary fluor and is coated with the second reflecting layer of described secondary fluor, and described second reflecting layer exposes described second window.
An embodiment according to the disclosure, wherein said first pixel detector also includes the first data acquisition board.
An embodiment according to the disclosure, wherein said second pixel detector also includes the second data acquisition board.
An embodiment according to the disclosure, wherein said radiographic source includes x-ray source and isotopic source.
An embodiment according to the disclosure, the mass thickness of wherein said first pixel detector determines according to any one or a few the combination in described radiographic source type, the first sensitive media type and pixel size.
An embodiment according to the disclosure, the mass thickness of wherein said second pixel detector selects to make described second pixel detector array can effectively detect the described radiographic source photon with the second energy after described first pixel detector array, and the mass thickness of described second pixel detector is more than the mass thickness of described first pixel detector.
According to another aspect of the disclosure, it is provided that a kind of dual-energy detector system, including: it is positioned at the radiographic source of tested object side；It is positioned at the dual-energy detector device of described tested object opposite side.Wherein said dual-energy detector device includes: near the first pixel detector array of described radiographic source side, have the radiographic source photon of the first energy for detection；Away from the second pixel detector array of described radiographic source side, for the detection radiographic source photon with the second energy after described first pixel detector array, described second can be higher than described first energy.Wherein said first pixel detector array includes ranked first pixel detector more, described first pixel detector include the first sensitive medium, the first light-sensitive device, for incident first plane of incidence of described radiographic source and the first window that couples with described first light-sensitive device, described first plane of incidence is towards described radiographic source；Described second pixel detector array include single second pixel detector, described second pixel detector include the second sensitive medium, the second light-sensitive device, for incident second plane of incidence of described radiographic source and the second window of coupling with described second light-sensitive device；The elemental area of multiple first pixel detectors that each second pixel detector is corresponding with its dead ahead is identical.
An embodiment according to the disclosure, wherein said first pixel detector also includes the first data acquisition board.
An embodiment according to the disclosure, wherein said second pixel detector also includes the second data acquisition board.
An embodiment according to the disclosure, also include processing means, described processing means is connected with described first data acquisition board and described second data acquisition board respectively, read described first pixel detector array and the output signal of described second pixel detector array, and obtain the effective atomic number information of described analyte according to described output signal.
An embodiment according to the disclosure, wherein said radiographic source includes x-ray source and isotopic source.
Dual-energy detector device according to the disclosure, system, it is possible to promote Object Classification ability and improve spatial discrimination index.
It should be appreciated that it is only exemplary that above general description and details hereinafter describe, the disclosure can not be limited.
Accompanying drawing explanation
Describing its example embodiment in detail by referring to accompanying drawing, above and other feature of the disclosure and advantage will be apparent from.
Fig. 1 schematically shows the structure chart of the dual-energy detector device according to disclosure example embodiment；
Fig. 2 schematically shows the structure chart that ranked first pixel detector array according to disclosure example embodiment more；
Fig. 3 schematically shows the structure chart of the single second pixel detector array according to disclosure example embodiment；
Fig. 4 schematically shows the structure chart of the dual-energy detector system according to disclosure example embodiment；
Fig. 5 schematically shows the flow chart of the method for the dual intensity detection according to disclosure example embodiment.
Detailed description of the invention
It is described more fully with example embodiment referring now to accompanying drawing.But, example embodiment can be implemented in a variety of forms, and is not understood as limited to embodiment set forth herein；On the contrary, it is provided that these embodiments make the disclosure will fully and completely, and the design of example embodiment is conveyed to those skilled in the art all sidedly.The most identical reference represents same or similar part, thus will omit repetition thereof.
Additionally, described feature, structure or characteristic can be combined in one or more embodiment in any suitable manner.In the following description, it is provided that many details thus provide fully understanding of embodiment of this disclosure.It will be appreciated, however, by one skilled in the art that the technical scheme of the disclosure can be put into practice and do not have in described specific detail one or more, or other method, constituent element, material, device, step etc. can be used.In other cases, known features, method, device, realization, material or operation are not shown in detail or describe to avoid each side of the fuzzy disclosure.
Block diagram shown in accompanying drawing is only functional entity, it is not necessary to must be corresponding with physically separate entity.I.e., software form can be used to realize these functional entitys, or in the module that one or more softwares harden, realize the part of these functional entitys or functional entity, or in heterogeneous networks and/or processor device and/or microcontroller device, realize these functional entitys.
Fig. 1 schematically shows the structure chart of the dual-energy detector device according to disclosure example embodiment.
As it is shown in figure 1, this device 110 includes: near the first pixel detector array 120 of radiographic source side, for detecting the radiographic source photon of relative mental retardation；Away from the second pixel detector array 170 of described radiographic source side, for the described radiographic source photon of the detection relative high energy after described first pixel detector array 120.Wherein said first pixel detector array 120 includes ranked first pixel detector more, described first pixel detector include the first sensitive medium, the first light-sensitive device 150, for incident first plane of incidence 130 of described radiographic source and the first window 140 that couples with described first light-sensitive device 150, described first plane of incidence 130 is towards described radiographic source；Described second pixel detector array 170 include single second pixel detector, described second pixel detector include the second sensitive medium, the second light-sensitive device 1100, for incident second plane of incidence 190 of described radiographic source and the second window 180 of coupling with described second light-sensitive device 1100；The elemental area of each second its corresponding multiple first pixel detectors of pixel detector is identical.
According to example embodiment, described first pixel detector is small pixel detector or mental retardation detector, described second pixel detector is big pixel detector or high energy detector, wherein, here " big pixel " and " small pixel ", " high energy " and " mental retardation " is all comparatively speaking, such as, small pixel can compare with secondary electron range according to the lateral dimension (i.e. the size of perpendicular ray incident direction) of described first pixel detector, when both are the most suitable, then it is assumed that described first detector is described small pixel detector.Small pixel can also judge compared with the length of described first sensitive medium (such as scintillator) according to the lateral dimension of described first pixel detector, when the lateral dimension of described first pixel detector is less than described first sensitive one magnitude of medium, during a length of 30mm of the most described first sensitive medium, when the lateral dimension of described first pixel detector is less than 3mm, then it is assumed that described first detector is described small pixel detector.In like manner, described big pixel can also compare with described secondary electron range according to the lateral dimension of described second pixel detector or compare with the length of described second sensitive medium respectively and judge, such as, when the lateral dimension of described second pixel detector and the length of described second sensitive medium are more than the 20% of a magnitude or its length, then it is assumed that described second detector is described big pixel detector.Certainly, specifically can select according to application scenario, this utility model is in this no limit.
According to example embodiment, can arrange according to concrete system, the pixel detector that the x-ray photon that detection is such as less than 2 megavolts is main is referred to as mental retardation detector, and the pixel detector that detection is main higher than 2 megavolts is referred to as high energy detector.Certainly, specifically can select according to application scenario, this utility model is in this no limit.
Fig. 1 is the profile along X-ray incident direction of the dual-energy detector device of the disclosure, mental retardation small pixel detector array is located close to the side of x-ray source, X-ray is perpendicular to sensitive face (the most described first plane of incidence) and incides in this detection device, described first light-sensitive device, the signal of described first light-sensitive device output is had to be sent in described first data acquisition board on the described first window facing described first plane of incidence of each mental retardation small pixel probe access；High energy big pixel detector array is positioned at the rear of mental retardation small pixel detector array, and what it coupled on one face has the second light-sensitive device, described second light-sensitive device output signal to send to the second data acquisition board；In the example shown, a big pixel detector of high energy is corresponding with the 2 × 4 of front mental retardation small pixel detectors, and elemental area is identical.
According to example embodiment, wherein said first sensitive medium is primary scintillator, each first pixel detector includes rectangular described primary scintillator and is coated with the first reflecting layer of described primary scintillator, described first reflecting layer exposes described first window, and the side relative with described first window of each first pixel detector is described first plane of incidence.
According to example embodiment, wherein said second sensitive medium is secondary fluor, and each second pixel detector includes rectangular described secondary fluor and is coated with the second reflecting layer of described secondary fluor, and described second reflecting layer exposes described second window.The side relative with described second window of each second pixel detector is described second plane of incidence.
In current radiation monitoring field, the core component of radiation checking system is its detector array, directly decides the performance indications of whole system.A general radiation checking system needs hundreds of to several ten thousand probe units (in radiant image, then show as pixel), and the size of the sensitive face of each probe unit is from 1mm to tens mm.Scintillation detector is the main flow detector of radiant image at present, and scintillation detector includes multiple scintillator cells (the most described primary scintillator and described secondary fluor)).For convenience of producing, generally by fixing for multiple scintillator cells composition, a row or several rows produces and installs.This type of scintillation detector is mainly the scintillator (the most described sensitive medium) in reflecting layer by periphery and light-sensitive device forms.
At present in the X-ray inspection system of megavolt level, mainly use the method for dual-energy x-ray bundle to realize the measurement of material effective atomic number information, the X-ray beam i.e. formed by being alternately produced two groups of different-energies realizes, but, the time difference is had between this method on the one hand two X-ray beams, i.e. correspond to tested object and there is position deviation, limit the precision of Object Classification；On the other hand, in actual product, general employing dual intensity electron accelerator has higher requirement as x-ray source, the method to stability of its output energy and transmitted intensity, and technical complexity is bigger.
For the spatial discrimination index in the X-ray inspection system of lifting megavolt level, main method is the detector using pixel less.But, small pixel detector has limitation in megavolt level system, in order to ensure to check speed, for small pixel detector, and the plurality of rows of small pixel detector array architecture of general employing.This multiple rows of small pixel detector array architecture requires that the light-sensitive device of scintillation detector is placed in scintillator and facing away from the one side of beam radiation.But, in order to ensure enough detection efficients, scintillator will be bigger along the size (mass thickness of the most described first pixel detector) in the direction of beam incidence, passage of scintillation light needs just can be collected through multiple reflections, thus cause the collection efficiency of passage of scintillation light to reduce, thus affect amplitude and the signal to noise ratio of output signal, affect penetration power index the most at last.Meanwhile, also resulting in the crosstalk between detector increases, and affects spatial discrimination index.Further, processing technique is required higher by the increase of small pixel detector mass thickness, has difficulties the most in the implementation.Here " mass thickness " refers to that (unit is generally g/cm for the product of through-thickness article average density and thickness2)
According to example embodiment, wherein said first pixel detector also includes the first data acquisition board 160.
According to example embodiment, wherein said second pixel detector also includes the second data acquisition board 1110.
According to example embodiment, wherein said radiographic source includes x-ray source and isotopic source.
According to example embodiment, the mass thickness of wherein said first pixel detector determines according to any one or a few the combination in described radiographic source type, the first sensitive media type and pixel size.
According to example embodiment, the mass thickness of wherein said second pixel detector selects the described radiographic source photon making described second pixel detector array can detect described relative high energy, and the mass thickness of described second pixel detector is more than the mass thickness of described first pixel detector.
According to example embodiment, described dual-energy detector device can also be applied in the system of dual-energy x-ray bundle simultaneously, two groups of detectors of high and low energy and high and low energy X-ray beam produce the higher information that can be used for resolving analyte effective atomic number, have the effect promoting its Object Classification ability.
Wherein, preposition small pixel detector can have good spatial resolving power.When analyte is thicker, at this moment in actual job, focus of attention will be penetration power, and the signal of preposition mental retardation small pixel detector and the big pixel detector of rearmounted high energy merges, it is possible to promote penetration power index.
According to example embodiment, the parameters such as the pixel size of described small pixel detector, mass thickness (i.e. along the size of ray incident direction) and material, and the parameter of rearmounted described big pixel detector can calculate according to real system and preferred plan is determined in experiment.If mass thickness is the least, it is difficult to ensure the relative mental retardation x-ray photon that detection is enough；If mass thickness is too big, then can cause detecting the x-ray photon that more energy is higher, affect rearmounted described big pixel detector output signal.Such as, the mass thickness of described small pixel detector can be chosen as 4mm, and the mass thickness of described big pixel detector can be chosen as 30mm, but this utility model is not limited.
The dual-energy detector device of the disclosure includes near radiogenic mental retardation multiple rows of small pixel detector with away from radiogenic single big pixel high energy detector, may be used in the X-ray inspection system of megavolt level, Object Classification and spatial discrimination index can be promoted, it is provided that the function of dual intensity Object Classification and higher spatial resolution, higher detection efficient and higher sensitivity simultaneously.
Fig. 2 schematically shows the structure chart that ranked first pixel detector array according to disclosure example embodiment more.
As shown in Figure 2, this figure is to ranked first pixel detector (such as small pixel detector) array 210 to be perpendicular to the profile of X-ray incident direction more, multiple mental retardation small pixel detectors composition 4 × 16 first pixel detector arrays, the sensitive medium of detector first 220 and the first reflecting layer 230 of outsourcing that each first pixel detector is made up of scintillator are constituted.Concrete small pixel detector two-dimensional arrangements number can select according to application scenario, however it is not limited to shown in Fig. 2.
Fig. 3 schematically shows the structure chart of the single second pixel detector array according to disclosure example embodiment.
As it is shown on figure 3, the second pixel detector (the biggest pixel detector) array 310 that this figure is single is perpendicular to the profile of X-ray incident direction, high energy the second pixel detector array of the high energy big pixel detector composition of 8 passages；The sensitive medium of detector second 320 and the second reflecting layer 330 of outsourcing that the big pixel detector of these high energy is also made up of scintillator are constituted.
The bremsstrahlung X-ray power spectrum that electron accelerator (can be monoenergetic, dual intensity or Multi-function electronic accelerator) produces is a continuum, the energy of x-ray photon has distribution from the energy of 0 to electron beam, from the point of view of on substantially, x-ray photon energy is the highest, its half-value layer is the least, i.e. penetration power is the strongest.Analyte is different according to its effective atomic number, and the x-ray photon ratio of the different-energy of absorption is the most different.Small pixel detector is limited due to mass thickness, it is applicable to preposition and detects the x-ray photon of relative mental retardation, rearmounted high energy detector can detect the x-ray photon of more high energy relatively, resolves the output signal of both detectors, can obtain the effective atomic number information of analyte.So, the energy response to high energy and mental retardation is differential curing in the device of the disclosure, works more stable；And the generation of high energy signal and low energy signal comes from the X-ray beam of synchronization, there is not time and position deviation.
Fig. 4 schematically shows the structure chart of the dual-energy detector system according to disclosure example embodiment.
As shown in Figure 4, this system includes: be positioned at the radiographic source 410 of tested object side；It is positioned at the dual-energy detector device 430 of described tested object 420 opposite side.
Wherein said dual-energy detector device 430 includes: near the first pixel detector array of described radiographic source 410 side, for detecting the radiographic source photon of relative mental retardation；Away from the second pixel detector array of described radiographic source 410 side, for the described radiographic source photon of the detection relative high energy after described first pixel detector array.
Wherein said first pixel detector array includes ranked first pixel detector more, described first pixel detector include the first sensitive medium, the first light-sensitive device, for first plane of incidence of described radiographic source 410 incidence and the first window that couples with described first light-sensitive device, described first plane of incidence is towards described radiographic source 410；Described second pixel detector array include single second pixel detector, described second pixel detector include the second sensitive medium, the second light-sensitive device, for incident second plane of incidence of described radiographic source and the second window of coupling with described second light-sensitive device；The elemental area of each second its corresponding multiple first pixel detectors of pixel detector is identical.
According to example embodiment, the mass thickness of multiple rows of undersized described small pixel detector is according to concrete system, such as the type of electron accelerator mainly used, its factor such as sensitive media type and pixel size, determine that optimal Object Classification effect is determined.This multiple rows of undersized described small pixel detector is used for detecting the x-ray photon that relative energy is relatively low.
According to example embodiment, the detector module arcuate array of described dual-energy detector device 430 composition and radiographic source (such as x-ray source) point are listed in the both sides of tested object 420.The sensitive face of each detector is just towards x-ray source 410.
This module can realize material effective ordinal number identification in the radiation checking system using monoenergetic electrons accelerator；And Object Classification ability can be promoted in using the radiation checking system of X-ray of dual intensity or multipotency.
By small pixel detector and the combination of big pixel detector, spatial discrimination and penetration power index are taken into account.
According to example embodiment, the mass thickness of rearmounted described big pixel detector enough can ensure that and detects major part x-ray photon after described small pixel detector array, these x-ray photons there is relatively high energy.And the pixel size of a big pixel detector is identical with total pixel size of corresponding multiple small pixel detectors of its dead ahead.
According to example embodiment, wherein said first pixel detector also includes the first data acquisition board.
The second data acquisition board is also included according to wherein said second pixel detector of example embodiment.
According to example embodiment, also include processing means, described processing means is connected with described first data acquisition board and described second data acquisition board respectively, read described first pixel detector array and the output signal of described second pixel detector array, and obtain the effective atomic number information of described analyte according to described output signal.
According to example embodiment, wherein said radiographic source includes x-ray source and isotopic source.
According to example embodiment, also include the accessory such as data reading circuit and associated mechanical part.
The system of the disclosure takes into account lifting Object Classification, spatial discrimination and penetration power performance indications simultaneously.By resolving preposition mental retardation small pixel detector array corresponding to position and rearmounted high energy big pixel detector output signal, obtain the effective atomic number information of analyte.Meanwhile, preposition small pixel detector has good spatial discrimination function, combines with rearmounted big pixel detector, contributes to promoting penetration power.
Fig. 5 schematically shows the flow chart of the method for the dual intensity detection according to disclosure example embodiment.
As shown in Figure 5, in step S510, near radiographic source side, the first pixel detector array is being set, for detecting the radiographic source photon of relative mental retardation, wherein said first pixel detector array includes ranked first pixel detector more, described first pixel detector include primary scintillator, the first light-sensitive device, for incident first plane of incidence of described radiographic source and the first window that couples with described first light-sensitive device, described first plane of incidence is towards described radiographic source.
In step S520, away from described radiographic source side, the second pixel detector array is being set, described radiographic source photon for the detection relative high energy after described first pixel detector array, wherein said second pixel detector array includes single second pixel detector, described second pixel detector include secondary fluor, the second light-sensitive device, for incident second plane of incidence of described radiographic source and the second window of coupling with described second light-sensitive device, the elemental area of each second its corresponding multiple first pixel detectors of pixel detector is identical.
In step S530, irradiate described first pixel detector array with described radiographic source from described first plane of incidence.
According to example embodiment, also include: read described first pixel detector array and the output signal of described second pixel detector array；The effective atomic number information of described analyte is obtained according to described output signal.
Other content in present embodiment, with reference to the content in other embodiment above-mentioned, does not repeats them here.
Fig. 5 illustrates the flow chart of the method for the dual intensity detection according to disclosure example embodiment.The method can such as utilize the dual-energy detector device as shown in Fig. 1,2,3 or 4 and system to realize, but the disclosure is not limited to this.It should be noted that Fig. 5 is only schematically illustrating rather than limiting purpose of the process included by the method according to disclosure example embodiment.It can be readily appreciated that the process shown in Fig. 5 is not intended that or limits these time sequencings processed.It addition, be also easy to understand, these process can such as either synchronously or asynchronously perform in multiple module/process/thread.
By the description of above embodiment, those skilled in the art is it can be readily appreciated that the method for disclosure embodiment and corresponding module can realize by the way of software or partial software hardening.Therefore, the technical scheme of disclosure embodiment can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, including some instructions with so that a calculating equipment (can be personal computer, server, mobile terminal or the network equipment etc.) performs the method according to disclosure embodiment.
It will be understood by those skilled in the art that accompanying drawing is the schematic diagram of example embodiment, module or flow process in accompanying drawing are not necessarily implemented necessary to the disclosure, therefore cannot be used for limiting the protection domain of the disclosure.
It will be appreciated by those skilled in the art that above-mentioned each module can be distributed in device according to the description of embodiment, it is also possible to carry out respective change and be disposed other than in one or more devices of the present embodiment.The module of above-described embodiment can merge into a module, it is also possible to is further split into multiple submodule.
More than it is particularly shown and described the exemplary embodiment of the disclosure.It should be understood that the disclosure is not limited to the disclosed embodiments, on the contrary, the disclosure is intended to contain the various amendments and equivalent arrangements comprised in the spirit and scope of the appended claims.
Claims (13)
1. a dual-energy detector device, it is characterised in that including:
Near the first pixel detector array of radiographic source side, there is for detection the radiographic source photon of the first energy；
Away from the second pixel detector array of described radiographic source side, for the detection radiographic source photon with the second energy after described first pixel detector array, described second can be higher than described first energy；Wherein
Described first pixel detector array includes ranked first pixel detector more, described first pixel detector include the first sensitive medium, the first light-sensitive device, for incident first plane of incidence of described radiographic source and the first window that couples with described first light-sensitive device, described first plane of incidence is towards described radiographic source；
Described second pixel detector array include single second pixel detector, described second pixel detector include the second sensitive medium, the second light-sensitive device, for incident second plane of incidence of described radiographic source and the second window of coupling with described second light-sensitive device；
The elemental area of multiple first pixel detectors that each second pixel detector is corresponding with its dead ahead is identical.
2. device as claimed in claim 1, it is characterized in that, wherein said first sensitive medium is primary scintillator, each first pixel detector includes rectangular described primary scintillator and is coated with the first reflecting layer of described primary scintillator, described first reflecting layer exposes described first window, and the side relative with described first window of each first pixel detector is described first plane of incidence.
3. device as claimed in claim 1, it is characterized in that, wherein said second sensitive medium is secondary fluor, and each second pixel detector includes rectangular described secondary fluor and is coated with the second reflecting layer of described secondary fluor, and described second reflecting layer exposes described second window.
4. device as claimed in claim 1, wherein said first pixel detector also includes the first data acquisition board.
5. device as claimed in claim 1, it is characterised in that wherein said second pixel detector also includes the second data acquisition board.
6. device as claimed in claim 1, it is characterised in that wherein said radiographic source includes x-ray source and isotopic source.
7. device as claimed in claim 1, it is characterised in that the mass thickness of wherein said first pixel detector determines according to any one or a few the combination in described radiographic source type, the first sensitive media type and pixel size.
8. device as claimed in claim 7, it is characterized in that, the mass thickness of wherein said second pixel detector selects to make described second pixel detector array can effectively detect the described radiographic source photon with the second energy after described first pixel detector array, and the mass thickness of described second pixel detector is more than the mass thickness of described first pixel detector.
9. a dual-energy detector system, it is characterised in that including:
It is positioned at the radiographic source of tested object side；
It is positioned at the dual-energy detector device of described tested object opposite side；Wherein
Described dual-energy detector device includes:
Near the first pixel detector array of described radiographic source side, there is for detection the radiographic source photon of the first energy；
Away from the second pixel detector array of described radiographic source side, for the detection radiographic source photon with the second energy after described first pixel detector array, described second can be higher than described first energy；Wherein
Described first pixel detector array includes ranked first pixel detector more, described first pixel detector include the first sensitive medium, the first light-sensitive device, for incident first plane of incidence of described radiographic source and the first window that couples with described first light-sensitive device, described first plane of incidence is towards described radiographic source；
Described second pixel detector array include single second pixel detector, described second pixel detector include the second sensitive medium, the second light-sensitive device, for incident second plane of incidence of described radiographic source and the second window of coupling with described second light-sensitive device；
The elemental area of multiple first pixel detectors that each second pixel detector is corresponding with its dead ahead is identical.
10. system as claimed in claim 9, it is characterised in that wherein said first pixel detector also includes the first data acquisition board.
11. systems as claimed in claim 10, it is characterised in that wherein said second pixel detector also includes the second data acquisition board.
12. systems as claimed in claim 11, it is characterized in that, also include processing means, described processing means is connected with described first data acquisition board and described second data acquisition board respectively, read described first pixel detector array and the output signal of described second pixel detector array, and obtain the effective atomic number information of described analyte according to described output signal.
13. systems as claimed in claim 9, it is characterised in that wherein said radiographic source includes x-ray source and isotopic source.
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| CN108333620A (en) * | 2018-02-26 | 2018-07-27 | 奕瑞新材料科技（太仓）有限公司 | The localization method of detection device and middle low energy gamma source |
| CN114878604A (en) * | 2022-07-11 | 2022-08-09 | 芯晟捷创光电科技(常州)有限公司 | Ray detector, detection method and detection system |
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| CN108333620A (en) * | 2018-02-26 | 2018-07-27 | 奕瑞新材料科技（太仓）有限公司 | The localization method of detection device and middle low energy gamma source |
| CN108333620B (en) * | 2018-02-26 | 2023-08-15 | 张岚 | Detection device and positioning method of medium-low energy ray source |
| CN114878604A (en) * | 2022-07-11 | 2022-08-09 | 芯晟捷创光电科技(常州)有限公司 | Ray detector, detection method and detection system |
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