CN107478664B - Linear dual-energy X-ray sensor and linear dual-energy X-ray detection system - Google Patents
Linear dual-energy X-ray sensor and linear dual-energy X-ray detection system Download PDFInfo
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- CN107478664B CN107478664B CN201710796582.2A CN201710796582A CN107478664B CN 107478664 B CN107478664 B CN 107478664B CN 201710796582 A CN201710796582 A CN 201710796582A CN 107478664 B CN107478664 B CN 107478664B
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Abstract
The invention provides a linear dual-energy X-ray sensor and a linear dual-energy X-ray detection system, wherein the linear dual-energy X-ray sensor comprises: the front surface of the PCB is provided with a first connecting structure; the linear diode array panel is attached to the front surface of the PCB through the back surface, and a second connecting structure is arranged on the front surface of the linear diode array panel and is electrically connected with the first connecting structure; the high-energy pixel array structure is positioned on the front side of the linear diode array panel and is electrically connected with the second connecting structure; and the low-energy pixel array structure is positioned on the front surface of the linear diode array panel and has a distance with the high-energy pixel array structure, and the low-energy pixel array structure is electrically connected with the second connecting structure. Compared with the existing vertical linear dual-energy X-ray sensor, the invention has the advantages of simple structure, small volume, low cost and the like.
Description
Technical Field
The invention belongs to the technical field of X-ray imaging, and particularly relates to a linear dual-energy X-ray sensor and a linear dual-energy X-ray detection system.
Background
The linear dual-energy X-ray detection equipment is a core component of various safety inspection and industrial inspection equipment, and the linear dual-energy X-ray sensor is the most key component of the linear dual-energy X-ray detection equipment. In practical applications, it is usually necessary to determine and classify the material, density, etc. of the detected object, so dual-energy X-ray detection is usually adopted.
The structure of the existing line type dual energy X-ray sensor is shown in fig. 1, and the line type dual energy X-ray sensor comprises: a first PCB (printed circuit board) 101, a front surface of which is provided with a first connecting structure 102 and a second connecting structure 103; a first LDA panel (linear diode array panel) 104 attached to the front surface of the first PCB 101; an high-energy pixel array structure 105 located on the front side of the first LDA panel 104, the high-energy pixel array structure 105 including high-energy pixels 1051 and a first scintillator 1052 located on the upper surface of the high-energy pixels 1051; a third connection structure 106 located on the front side of the first LDA panel 104, wherein the high-energy pixels 1051 are electrically connected to the third connection structure 106; a first FPC board (flexible circuit board) electrically connected to the third connection structure 106 and the first connection structure 102; a second PCB board 108 located directly above the first LDA-panel 104; a second LDA panel 109 attached to the front surface of the second PCB 108; a low energy pixel array structure 110 located on the front surface of the second LDA panel 109, the low energy pixel array structure 110 comprising a low energy pixel 1101 and a second scintillator 1102 covering the upper surface of the low energy pixel 1101; a fourth connection structure 111 located on the front surface of the second LDA panel 109, the low energy pixel 1101 being electrically connected to the fourth connection structure 111; a second FPC board 112 electrically connected to the fourth connection structure 111 and the second connection structure 103; and a copper foil 113 positioned on the back surface of the second PCB 108.
However, the structure of the conventional linear dual-energy X-ray sensor is complicated, and the two LDA panels of the first LDA panel 104 and the second LDA panel 109 need to be attached to respective PCBs, and further need to have respective independent FPCs electrically connected to the two connection structures on the first PCB 101. The existing linear dual-energy X-ray sensor has the following disadvantages: 1. the structure is complex, the design difficulty is high and the cost is high; 2. the first LDA panel 104 and the second LDA panel 109 have high requirement for vertical alignment accuracy, and if there is a large misalignment, the low-energy X-rays that do not pass through the low-energy pixel array structure 110 are directly received by the high-energy pixel array 105 located below, thereby affecting the image quality; the size of the whole structure is large.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a linear dual-energy X-ray sensor and a linear dual-energy X-ray detection system, which are used to solve the problems of the linear dual-energy X-ray sensor in the prior art, such as complicated structure, large design difficulty, large size, high cost, high requirement for alignment accuracy of the upper and lower LDA panels, and easy influence on image quality.
To achieve the above and other related objects, the present invention provides a linear dual energy X-ray sensor including:
the front surface of the PCB is provided with a first connecting structure;
the linear diode array panel is attached to the front surface of the PCB through the back surface, a second connecting structure is arranged on the front surface of the linear diode array panel, and the second connecting structure is electrically connected with the first connecting structure;
the high-energy pixel array structure is positioned on the front surface of the linear diode array panel, is electrically connected with the second connecting structure and is used for receiving high-energy X rays;
and the low-energy pixel array structure is positioned on the front surface of the linear diode array panel and has a distance with the high-energy pixel array structure, and the low-energy pixel array structure is electrically connected with the second connecting structure and is used for receiving low-energy X rays.
As a preferred embodiment of the linear dual-energy X-ray sensor of the present invention, the high-energy pixel array structure includes a plurality of high-energy pixels, and the plurality of high-energy pixels are arranged in parallel at intervals; the low-energy pixel array structure comprises a plurality of low-energy pixels which are arranged in parallel at intervals.
As a preferred scheme of the linear dual-energy X-ray sensor of the present invention, a plurality of the high-energy pixels are arranged in a plurality of rows and a column, and the arrangement direction of the plurality of the high-energy pixels is consistent with the width direction of the PCB; the low-energy pixels are arranged in a plurality of rows and a plurality of columns, and the arrangement direction of the low-energy pixels is consistent with the width direction of the PCB.
As a preferred scheme of the linear dual-energy X-ray sensor of the present invention, a plurality of the high-energy pixels are arranged in multiple rows and multiple columns, and the arrangement direction of the plurality of the high-energy pixels is consistent with the width direction of the PCB; the low-energy pixels are arranged in multiple rows and columns, and the arrangement direction of the low-energy pixels is consistent with the width direction of the PCB.
As a preferable solution of the linear dual-energy X-ray sensor of the present invention, the high-energy pixel array structure further includes a first scintillator, and the first scintillator covers a surface of each of the high-energy pixels; the low-energy pixel array structure further comprises a second scintillator covering the surface of each low-energy pixel.
As a preferable aspect of the linear dual energy X-ray sensor of the present invention, the first scintillator and the second scintillator are made of different materials and/or have different thicknesses.
As a preferable aspect of the line type dual-energy X-ray sensor of the present invention, the high-energy pixel array structure further includes a light shielding layer, which is located on an upper surface of the first scintillator and is configured to filter low-energy X-rays.
In a preferred embodiment of the line-type dual-energy X-ray sensor according to the present invention, the light shielding layer includes at least one of a third scintillator and a copper foil.
As a preferable scheme of the linear dual-energy X-ray sensor of the present invention, the high-energy pixel array structure, the low-energy pixel array structure, and the second connection structure are sequentially arranged at intervals, and the second connection structure is located on one side of the low-energy pixel array structure close to the first connection structure.
As a preferable scheme of the linear dual-energy X-ray sensor of the present invention, the low-energy pixel array structure, the high-energy pixel array structure, and the second connection structure are sequentially arranged at intervals, and the second connection structure is located on one side of the high-energy pixel array structure close to the first connection structure.
As a preferable aspect of the linear dual-energy X-ray sensor of the present invention, the linear dual-energy X-ray sensor further includes a flexible circuit board, and the flexible circuit board is electrically connected to the second connection structure and the first connection structure.
The present invention also provides a linear dual-energy X-ray detection system, including:
a linear dual energy X-ray sensor as described in any of the above aspects;
the X-ray source is positioned above the linear dual-energy X-ray sensor and used for emitting X-rays, and the emitted X-rays cover the linear diode array panel in the linear dual-energy X-ray sensor;
the transmission module is positioned between the linear dual-energy X-ray sensor and the X-ray source and is used for driving an object to be detected to move;
the speed sensor is used for detecting the movement speed of the object to be detected or the movement speed of the conveying module;
and the fitting module is electrically connected with the linear dual-energy X-ray sensor and the speed sensor and is used for fitting according to the high-energy image and the low-energy image of the same region of the object to be detected, which are collected by the linear dual-energy X-ray sensor, the distance between the high-energy pixel array structure and the low-energy pixel array structure and the moving speed of the object to be detected to obtain the image of the region of the object to be detected.
As described above, the linear dual-energy X-ray sensor and the linear dual-energy X-ray detection system according to the present invention have the following advantageous effects: the high-energy pixel array structure and the low-energy pixel array structure are arranged on the same linear diode array panel, and the linear diode array panel is attached to the PCB.
Drawings
Fig. 1 is a schematic cross-sectional view of a linear dual-energy X-ray sensor in the prior art.
Fig. 2 is a schematic cross-sectional view of a linear dual-energy X-ray sensor according to an embodiment of the present invention.
Fig. 3 is a schematic top view of a linear dual-energy X-ray sensor according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a linear dual-energy X-ray detection system according to a second embodiment of the present invention.
Fig. 5 and fig. 6 are schematic diagrams illustrating the working principle of the linear dual-energy X-ray detection system according to the second embodiment of the present invention.
Description of the element reference numerals
101 first PCB
102 first connecting structure
103 second connecting structure
104 first LDA Panel
105 high-energy pixel array structure
1051 high-energy pixel
1052 first scintillator
106 third connecting structure
107 first FPC board
108 second PCB board
109 second LDA panel
110 low energy pixel array structure
1101 low-energy pixel
1102 second scintillator
111 fourth connection structure
112 second FPC board
113 copper foil
2-line type dual-energy X-ray sensor
21 PCB board
22 first connecting structure
23 line type diode array panel
24 second connecting structure
25 high-energy pixel array structure
251 high-energy pixel
252 first scintillator
253 light-shielding layer
2531 copper foil
2532 third scintillator
26 low energy pixel array structure
261 Low energy Pixel
262 second scintillator
27 flexible circuit board
28 metal connecting wire
3X-ray source
4 transfer module
5 speed sensor
6 fitting module
7 object to be detected
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
Please refer to fig. 2 to 6. It should be noted that the drawings provided in the present embodiment are only schematic and illustrate the basic idea of the present invention, and although the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation, the form, quantity and proportion of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.
Example one
Referring to fig. 2 and 3, the present invention provides a linear dual-energy X-ray sensor 2, wherein the linear dual-energy X-ray sensor 2 includes: the PCB comprises a PCB 21, wherein a first connecting structure 22 is arranged on the front surface of the PCB 21; the linear diode array panel 23 is attached to the front surface of the PCB board 21 through the back surface, the front surface of the linear diode array panel 23 is provided with a second connection structure 24, and the second connection structure 24 is electrically connected with the first connection structure 22; a high-energy pixel array structure 25, wherein the high-energy pixel array structure 25 is located on the front surface of the linear diode array panel 23, and is electrically connected to the second connection structure 24 for receiving high-energy X-rays; a low-energy pixel array structure 26, wherein the low-energy pixel array structure 26 is located on the front surface of the linear diode array panel 23 and has a distance with the high-energy pixel array structure 25, and the low-energy pixel array structure 26 is electrically connected with the second connection structure 24 for receiving low-energy X-rays.
As an example, the first connection structure 22 and the second connection structure 24 may be connection pads or connectors. The first connection structure 22 is electrically connected to a lead structure (not shown) located inside the PCB board 21.
As an example, as shown in fig. 2 and fig. 3, the high-energy pixel array structure 25 and the low-energy pixel array structure 26 are attached to the surface of the line-type diode array panel 23 and are arranged at intervals in parallel along the surface of the line-type diode array panel 23.
As an example, as shown in fig. 3, the high-energy pixel array structure 25 includes a plurality of high-energy pixels 251, and the plurality of high-energy pixels 251 are arranged in parallel at intervals; the low-energy pixel array structure 2 comprises a plurality of low-energy pixels 261, and the plurality of low-energy pixels 261 are arranged in parallel at intervals. Each of the high-energy pixels 251 is electrically connected to the second connection structure 24 through a metal wire 28, and each of the low-energy pixels 261 is electrically connected to the second connection structure 24 through a metal wire 28.
In one example, as shown in fig. 3, a plurality of the high-energy pixels 251 are arranged in a plurality of rows and a column, and the arrangement direction of the plurality of the high-energy pixels 251 is consistent with the width direction of the PCB 21; the plurality of low-energy pixels 261 are arranged in a plurality of rows and a column, and the arrangement direction of the plurality of low-energy pixels 261 is consistent with the width direction of the PCB 21.
In an example, a plurality of the high-energy pixels 251 may be arranged in a plurality of rows and columns, and the arrangement direction of the plurality of the high-energy pixels 251 is consistent with the width direction of the PCB 21; the plurality of low-energy pixels 261 are arranged in multiple rows and multiple columns, and the arrangement direction of the plurality of low-energy pixels 261 is consistent with the width direction of the PCB 21.
As an example, continuing to refer to fig. 2, the high-energy pixel array structure 25 further includes a first scintillator 252, and the first scintillator 252 covers the surface of each of the high-energy pixels 251; the low energy pixel array structure 26 further includes a second scintillator 262, and the second scintillator 262 covers a surface of each of the low energy pixels 261.
As an example, the first scintillator 252 is of a different material and/or thickness than the second scintillator 262, i.e., the first scintillator 252 is of a different material than the second scintillator 262, or the first scintillator 252 is of a different thickness than the second scintillator 262.
As an example, the high-energy pixel array structure 25 further includes a light shielding layer 253, where the light shielding layer 253 is located on an upper surface of the first scintillator 252 and is used for filtering low-energy X-rays to prevent the low-energy X-rays from affecting image quality of the high-energy X-ray collection.
In an example, the light-shielding layer 253 includes at least one of a third scintillator 2532 and a copper foil 2531, that is, the light-shielding layer 253 may be the copper foil 2531, the third scintillator 2532, or a stacked structure of the copper foil 2531 and the third scintillator 2532, and in this case, as shown in fig. 2, the copper foil 2531 may be located on an upper surface of the first scintillator 252, and the third scintillator 2532 may be located on an upper surface of the copper foil 2531.
For convenience of illustration, the first scintillator 252, the light shielding layer 253, and the second scintillator 262 are not shown in fig. 3.
In an example, referring to fig. 3, the high-energy pixel array structure 25, the low-energy pixel array structure 26 and the second connection structure 24 are sequentially arranged at intervals, and the second connection structure 24 is located at a side of the low-energy pixel array structure 25 close to the first connection structure 22, so that the second connection structure 24 is electrically connected to the first connection structure 22.
In another example, the low-energy pixel array structure 2, the high-energy pixel array structure 25 and the second connection structure 24 are sequentially arranged at intervals, and the second connection structure 24 is located on one side of the high-energy pixel array structure 25 close to the first connection structure 22.
As an example, the line type dual energy X-ray sensor 2 further includes a flexible circuit board 27, and the flexible circuit board 27 is electrically connected to the second connection structure 24 and the first connection structure 21, that is, the second connection structure 24 is electrically connected to the first connection structure 22 through the flexible circuit board 27. Of course, in other examples, the second connection structure 24 may be electrically connected to the first connection structure 22 through a metal wire.
Example two
Referring to fig. 4, the present embodiment further provides a linear dual-energy X-ray detection system, including: the linear dual-energy X-ray sensor 2 according to the first embodiment, please refer to the first embodiment for a specific structure of the linear dual-energy X-ray sensor 2, which will not be described herein; an X-ray source 3, wherein the X-ray source 3 is located above the linear dual-energy X-ray sensor 2, and is used for emitting X-rays, and the emitted X-rays cover the linear diode array panel 23 in the linear dual-energy X-ray sensor 2; the transmission module 4 is located between the linear dual-energy X-ray sensor 2 and the X-ray source 3, and is used for driving the object 7 to be detected to move, and specifically, the transmission module 4 may be, but is not limited to, a conveyor belt; the speed sensor 5 is configured to detect a moving speed of the object 7 to be detected or a moving speed of the conveying module 4, specifically, the speed sensor 5 may directly detect the moving speed of the conveying module 4, and of course, the speed sensor 5 may also be connected to the conveying module 4, and the moving speed of the object 7 to be detected is obtained by detecting the conveying speed of the conveying module 4; and the fitting module 6 is electrically connected with the linear dual-energy X-ray sensor 2 and the speed sensor 5, and is configured to fit the high-energy image and the low-energy image of the same region of the object 7 to be detected, which are collected by the linear dual-energy X-ray sensor 2, the distance between the high-energy pixel array structure 25 and the low-energy pixel array structure 26, and the moving speed of the object 7 to be detected to obtain an image of the region of the object 7 to be detected.
Referring to fig. 5 and 6 in conjunction with fig. 4, it should be noted that, for convenience of illustration, the X-ray source 3, the transmission module 4 and the speed sensor 5 shown in fig. 4 are not shown in fig. 5 and 6, and the operation principle of the linear dual-energy X-ray detection system of the present invention is as follows:
first, as shown in fig. 5, at time T1, an a region (e.g., a region marked with an "a" in fig. 5 and 6) of the object 7 to be detected passes over the high-energy pixel array structure 25, and is detected by the high-energy pixel array structure 25 under the irradiation of X-rays (e.g., vertical arrows in fig. 5 and 6), and a high-energy image of the a region of the object 7 to be detected is collected;
next, as shown in fig. 6, at time T2, the a region of the object 7 to be detected moves to above the low energy pixel array structure 26, and is detected by the low energy pixel array structure 26 under the irradiation of the X-ray, and a low energy image of the a region of the object 7 to be detected is collected; when the object 7 to be detected moves, the speed sensor 5 detects the moving speed of the object 7 to be detected in real time;
finally, the fitting module 6 fits the high-energy image and the low-energy image of the same region of the object 7 to be detected, which are collected by the linear dual-energy X-ray sensor 2, the distance L between the high-energy pixel array structure 25 and the low-energy pixel array structure 26, and the moving speed S of the object 7 to be detected, to obtain an image of the region of the object 7 to be detected.
It should be noted that, the distance L between the high-energy pixel array structure 25 and the low-energy pixel array structure 26 is a fixed value, and in this process, the relationship between T2 and T1 is: t2 ═ T1+ L/S; the fitting obtained by the fitting module 6 is integration of the high-energy image of the region acquired at the time T1 and the low-energy image of the region acquired at the time T2, wherein the image of the region a of the object 7 to be detected is obtained by fitting.
It should be further noted that, in practical use, since the low-energy pixel array structure 26 and the high-energy pixel array structure 25 have a distance L in the horizontal space, the time for obtaining a complete image may be later than that of the conventional solution: assuming that the distance L between the low-energy pixel array structure 26 and the high-energy pixel array structure 25 is 2mm, and the moving speed S of the object 7 to be detected is 0.2m/S, the time difference between the acquisition time of the complete image and the conventional scheme is Δ T2-T1L/S10 ms, and the time difference in milliseconds is practically negligible, so that the linear dual-energy X-ray sensor of the present invention has no significant bad difference in performance compared with the linear dual-energy X-ray sensor in the prior art.
It should be further noted that the above "the distance between the low-energy pixel array structure 26 and the high-energy pixel array structure 25" is specifically the distance between the low-energy pixels 261 and the high-energy pixels 251.
In summary, the present invention provides a linear dual-energy X-ray sensor and a linear dual-energy X-ray detection system, wherein the linear dual-energy X-ray sensor includes: the front surface of the PCB is provided with a first connecting structure; the linear diode array panel is attached to the front surface of the PCB through the back surface, a second connecting structure is arranged on the front surface of the linear diode array panel, and the second connecting structure is electrically connected with the first connecting structure; the high-energy pixel array structure is positioned on the front surface of the linear diode array panel, is electrically connected with the second connecting structure and is used for receiving high-energy X rays; and the low-energy pixel array structure is positioned on the front surface of the linear diode array panel and has a distance with the high-energy pixel array structure, and the low-energy pixel array structure is electrically connected with the second connecting structure and is used for receiving low-energy X rays. The high-energy pixel array structure and the low-energy pixel array structure are arranged on the same linear diode array panel, and the linear diode array panel is attached to the PCB.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (9)
1. A linear dual energy X-ray detection system, comprising:
the linear dual-energy X-ray sensor comprises a PCB (printed Circuit Board), a linear diode array panel, a high-energy pixel array structure and a low-energy pixel array structure; the front surface of the PCB is provided with a first connecting structure; the linear diode array panel is attached to the front surface of the PCB through the back surface, a second connecting structure is arranged on the front surface of the linear diode array panel, and the second connecting structure is electrically connected with the first connecting structure; the high-energy pixel array structure is positioned on the front surface of the linear diode array panel, is electrically connected with the second connecting structure and is used for receiving high-energy X rays; the high-energy pixel array structure comprises a plurality of high-energy pixels, a first scintillator and a shading layer; the light shielding layer is used for filtering low-energy X rays and comprises a copper foil and a third scintillator; the first scintillator covers the surface of the high-energy pixel, the copper foil is positioned on the upper surface of the first scintillator, and the third scintillator is positioned on the upper surface of the copper foil; the low-energy pixel array structure is positioned on the front surface of the linear diode array panel, has a distance L with the high-energy pixel array structure in a horizontal space, and is electrically connected with the second connecting structure and used for receiving low-energy X rays; wherein L = (T2-T1) × S, S is the moving speed of the object to be detected, at the time of T1, the a region of the object to be detected passes above the high-energy pixel array structure, and is detected by the high-energy pixel array structure under the irradiation of X-rays, and the high-energy image of the a region of the object to be detected is collected; at time T2, the A area of the object to be detected moves to the upper part of the low-energy pixel array structure, the low-energy pixel array structure detects the A area of the object to be detected under the irradiation of the X-ray, and a low-energy image of the A area of the object to be detected is collected;
the X-ray source is positioned above the linear dual-energy X-ray sensor and used for emitting X-rays, and the emitted X-rays cover the linear diode array panel in the linear dual-energy X-ray sensor;
the transmission module is positioned between the linear dual-energy X-ray sensor and the X-ray source and is used for driving an object to be detected to move;
the speed sensor is used for detecting the movement speed of the object to be detected or the movement speed of the conveying module;
and the fitting module is electrically connected with the linear dual-energy X-ray sensor and the speed sensor and is used for fitting according to the high-energy image and the low-energy image of the same region of the object to be detected, which are collected by the linear dual-energy X-ray sensor, the distance between the high-energy pixel array structure and the low-energy pixel array structure and the moving speed of the object to be detected to obtain the image of the region of the object to be detected.
2. The linear dual energy X-ray detection system of claim 1, wherein: the high-energy pixel array structure comprises a plurality of high-energy pixels which are arranged in parallel at intervals; the low-energy pixel array structure comprises a plurality of low-energy pixels which are arranged in parallel at intervals.
3. The linear dual energy X-ray detection system of claim 2, wherein: the high-energy pixels are arranged in a plurality of rows and a column, and the arrangement direction of the high-energy pixels is consistent with the width direction of the PCB; the low-energy pixels are arranged in a plurality of rows and a plurality of columns, and the arrangement direction of the low-energy pixels is consistent with the width direction of the PCB.
4. The linear dual energy X-ray detection system of claim 2, wherein: the high-energy pixels are arranged in multiple rows and multiple columns, and the arrangement direction of the high-energy pixels is consistent with the width direction of the PCB; the low-energy pixels are arranged in multiple rows and columns, and the arrangement direction of the low-energy pixels is consistent with the width direction of the PCB.
5. The linear dual energy X-ray detection system of any one of claims 2 to 4, wherein: the low-energy pixel array structure further comprises a second scintillator covering the surface of each low-energy pixel.
6. The linear dual energy X-ray detection system of claim 5, wherein: the first scintillator is a different material and/or a different thickness than the second scintillator.
7. The linear dual energy X-ray detection system of claim 1, wherein: the high-energy pixel array structure, the low-energy pixel array structure and the second connecting structure are sequentially arranged at intervals, and the second connecting structure is positioned on one side of the low-energy pixel array structure close to the first connecting structure.
8. The linear dual energy X-ray detection system of claim 1, wherein: the low-energy pixel array structure, the high-energy pixel array structure and the second connecting structure are sequentially arranged at intervals, and the second connecting structure is positioned on one side of the high-energy pixel array structure close to the first connecting structure.
9. The linear dual energy X-ray detection system of claim 1, wherein: the linear dual-energy X-ray sensor further comprises a flexible circuit board, and the flexible circuit board is electrically connected with the second connecting structure and the first connecting structure.
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