CN115684217A - Multi-mode ray detection device - Google Patents
Multi-mode ray detection device Download PDFInfo
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- CN115684217A CN115684217A CN202211336912.7A CN202211336912A CN115684217A CN 115684217 A CN115684217 A CN 115684217A CN 202211336912 A CN202211336912 A CN 202211336912A CN 115684217 A CN115684217 A CN 115684217A
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Abstract
The invention relates to a multi-mode ray detection device, belongs to the field of ray nondestructive detection, and solves the problem that in the prior art, a revolving body workpiece cannot be subjected to single-wall transillumination and source detection in the detection process, and cannot be linked. The detection device comprises: the device comprises an X-ray machine upright post, an X-ray machine, a workpiece rotary table, a large detector upright post, a small detector cantilever, a small detector and a motion controller; the motion controller is used for controlling the positions of the ray machine, the large detector and the small detector and the pitch angles of the ray machine and the large detector, so that the source detection linkage is realized in the detection process, and the central beam of the ray emitted by the ray machine is kept to be always vertical to the surface of the large detector/the small detector and to pass through the central point of the large detector/the small detector. Single-wall transillumination detection and source detection linkage of the revolving body workpiece are realized.
Description
Technical Field
The invention relates to the technical field of ray nondestructive testing, in particular to a multi-mode ray detection device.
Background
Nondestructive testing is an indispensable tool in industrial development, and reflects the national industrial development level to a certain extent. X-ray detection has been used in industry for nearly a hundred years as a conventional non-destructive detection method. In the early and some current industrial fields (such as military manufacturing field), the X-ray detection usually uses film photography as the main detection method, and the detection method has the problems of long detection period, low detection efficiency, high detection cost, environmental pollution caused by darkroom waste liquid treatment and the like, and is not suitable for the non-destructive detection development trend of the information age.
At present, the X-ray digital imaging detection scheme generally places a workpiece on an object stage, and the object stage is positioned between a ray machine and a detector, so that the transillumination imaging of the workpiece by the X-ray is realized. For the revolving body workpiece, according to the transillumination layout, the X-ray can reach the detector for imaging only by penetrating through the double walls of the revolving body workpiece, so that the obtained image is the aliasing of two layers of wall thickness information, the image contrast sensitivity and the spatial resolution are poor, and the defect image on the image is not determined to be on the front wall or the rear wall.
Meanwhile, in the prior art, an operator manually finishes the alignment of the ray source and the detector, so that the operation difficulty is high, the operation time is long, and the alignment precision cannot be guaranteed.
Therefore, a detection device capable of performing single-wall transillumination on a revolving workpiece and realizing linkage of a ray machine and a detector is needed.
Disclosure of Invention
In view of the foregoing analysis, an embodiment of the present invention is directed to provide a multi-mode radiation detection apparatus, so as to solve the problem that single-wall transillumination and source detection cannot be performed on a revolving workpiece in the detection process in the prior art.
The embodiment of the invention provides a multi-mode ray detection device, which comprises: the device comprises a ray machine upright post, a ray machine, a workpiece rotary table, a large detector upright post, a small detector cantilever, a small detector and a motion controller;
the ray machine upright column and the large detector upright column are arranged on two sides of the workpiece rotary table;
the ray machine can be installed on the ray machine upright post in a pitching mode and can slide up and down along the ray machine upright post;
the large detector can be installed on the large detector upright post in a pitching mode and can slide up and down along the large detector upright post;
the workpiece to be detected is arranged on the workpiece rotary table;
the small detector cantilever is vertically and fixedly connected with the ray machine upright post, the small detector is arranged on the small detector cantilever and can move up and down and left and right along the small detector cantilever, and the small detector can penetrate into the workpiece to be detected for detection;
the motion controller is used for controlling the positions of the ray machine, the large detector and the small detector and the pitch angles of the ray machine and the large detector, so that source detection linkage is realized in the detection process, and a ray central beam emitted by the ray machine is kept to be always vertical to the surface of the large detector/the small detector and to pass through the central point of the large detector/the small detector.
Based on the further improvement of the detection device, the detection device also comprises first to fifth motion actuators and first to fifth motion mechanisms;
the motion controller controls the first motion mechanism to move through the first motion actuator so as to drive the ray machine to move up and down;
the motion controller controls the second motion mechanism to move through a second motion actuator so as to drive the ray machine to rotate in a pitching manner;
the motion controller controls a third motion mechanism to move through a third motion actuator so as to drive the large detector to move left and right;
the motion controller controls a fourth motion mechanism to move through a fourth motion actuator so as to drive the large detector to move up and down;
and the motion controller controls the motion of the fifth motion mechanism through the fifth motion actuator, so that the large detector is driven to rotate in a pitching manner.
Based on the further improvement of the detection device, the first motion actuator comprises a first servo driver and a first servo motor; the first movement mechanism comprises a first slide rail and a first slide block; the first slide rail is arranged on the upright post of the ray machine, and the first slide block is connected with the first servo motor and can slide up and down along the first slide rail;
the second motion actuator comprises a second servo driver and a second servo motor; the second movement mechanism comprises a ray end supporting mechanism, a ray end crank arm connecting rod, a bearing inner ring and a bearing outer ring; one end of the ray end supporting mechanism is fixedly connected with the first sliding block, and the other end of the ray end supporting mechanism is fixedly connected with the bearing outer ring; one end of the ray end crank arm connecting rod is connected with the second servo motor, and the other end of the ray end crank arm connecting rod is fixedly connected with the bearing inner ring; the bearing inner ring can rotate relative to the bearing outer ring, the ray machine is arranged on the bearing inner ring and fixedly connected with the bearing inner ring, and the second servo motor drives the ray machine to pitch and rotate.
Based on the further improvement of the detection device, the detection device further comprises an equipment base, and the ray machine stand column, the large detector stand column and the workpiece rotary table are all arranged on the equipment base.
Based on the further improvement of the detection device, the third motion actuator comprises a third servo driver and a third servo motor; the third movement mechanism comprises a third slide rail and a third slide block, and the third slide rail is arranged on the equipment base along the connecting line direction of the ray machine upright column and the large detector upright column; the third sliding block is connected with the third servo motor and can move left and right along the third sliding rail; the large detector upright column is arranged on the third sliding block;
the fourth motion actuator comprises a fourth servo driver and a fourth servo motor; the fourth movement mechanism comprises a fourth slide rail and a fourth slide block; the fourth slide rail is arranged on the large detector upright post, and the fourth slide block is connected with the fourth servo motor and can slide up and down along the fourth slide rail;
the fifth motion actuator comprises a fifth servo driver and a fifth servo motor; the fifth movement mechanism comprises a large detector end supporting mechanism, a large detector end crank arm connecting rod and a connecting block; one end of the large detector end supporting mechanism is fixedly connected with the fourth sliding block, and the other end of the large detector end supporting mechanism is rotatably connected with the connecting block; one end of the large detector end crank arm connecting rod is connected with the fifth servo motor, and the other end of the large detector end crank arm connecting rod is fixedly connected with the connecting block; the large detector is fixedly connected with the connecting block, and the fifth servo motor is driven to pitch and rotate.
Based on the further improvement of the detection device, the motion controller is used for sending a control command to the first to fifth servo drivers, and the first to fifth servo drivers drive the respective servo motors to drive the respective motion mechanisms to move to the designated positions according to the control command; the first to fifth servo motors are also used for sending respective positions to the motion controller through respective servo drivers.
Based on the further improvement of the detection device, the motion controller realizes the linkage of the ray machine and the large detector in the following modes:
when the focal length F of the ray machine can be changed, the motion controller automatically calculates the position and the pitch angle of the ray machine according to the position and the pitch angle of the large detector and the horizontal distance between the large detector and the ray machine:
SZ＝DZ-DX·tan(DP)；
SP＝DP；
or, the motion controller automatically calculates the position and the pitch angle of the large detector according to the horizontal distance between the large detector and the ray machine, and the position and the pitch angle of the ray machine:
DZ＝SZ+DX·tan(SP)；
DP＝SP；
DX represents a horizontal distance between a central point of the large detector and a focus of the ray machine, DZ represents a vertical distance between the central point of the large detector and a horizontal plane where the workpiece rotary table is located, DP represents a pitch angle of the large detector, SZ represents a vertical distance between the focus of the ray machine and the horizontal plane where the workpiece rotary table is located, and SP represents a pitch angle of the ray machine.
Based on the further improvement of the detection device, the motion controller realizes the linkage of the ray machine and the large detector in the following modes:
when the focal length F of the ray machine is kept unchanged, the motion controller automatically calculates the position and the pitch angle of the ray machine and the horizontal distance between the large detector and the ray machine according to the position and the pitch angle of the large detector:
SZ＝DZ-F·sin(DP)；
SP＝DP；
DX＝F·cos(DP)；
or, the motion controller automatically calculates the position and the pitch angle of the large detector and the horizontal distance between the large detector and the ray machine according to the position and the pitch angle of the ray machine and the focal length of the ray machine:
DZ＝SZ+F·sin(SP)；
DP＝SP；
DX＝F·cos(SP)；
DX represents a horizontal distance between a central point of the large detector and a focus of the ray machine, DZ represents a vertical distance between the central point of the large detector and a horizontal plane where the workpiece rotary table is located, DP represents a pitch angle of the large detector, SZ represents a vertical distance between the focus of the ray machine and the horizontal plane where the workpiece rotary table is located, and SP represents a pitch angle of the ray machine.
Based on the further improvement of the detection device, the detection device further comprises a sixth motion actuator, a seventh motion actuator, a sixth motion mechanism and a seventh motion mechanism;
the motion controller controls the sixth motion mechanism to move through a sixth motion actuator so as to drive the small detector to move left and right;
and the motion controller controls the seventh motion mechanism to move through a seventh motion actuator so as to drive the small detector to move up and down.
Based on a further improvement of the detection device, the sixth motion actuator comprises a sixth servo driver and a sixth servo motor; the sixth movement mechanism comprises a sixth sliding rail and a sixth sliding block; the sixth sliding rail is arranged on the small detector cantilever, and the sixth sliding block is connected with the sixth servo motor and can move left and right along the sixth sliding rail;
the seventh motion actuator comprises a seventh servo driver and a seventh servo motor; the seventh motion mechanism comprises a telescopic rod; the telescopic rod is arranged on the sixth sliding block, and the small detector is arranged at the lower end of the telescopic rod; the telescopic rod is connected with the seventh servo motor and is driven by the seventh servo motor to stretch, so that the small detector is driven to move up and down;
the motion controller is used for sending control instructions to the sixth servo driver and the seventh servo driver, and the sixth servo driver and the seventh servo driver drive the respective servo motors to drive the respective motion mechanisms to move to designated positions according to the control instructions; the sixth and seventh servo motors are also used for sending respective positions to the motion controller through respective servo drivers.
Compared with the prior art, the invention can realize at least one of the following beneficial effects:
1. the single-wall transillumination imaging of the revolving body workpiece is realized by detecting the small detector by penetrating into the workpiece to be detected.
2. The positions of the ray machine, the large detector and the small detector and the pitch angles of the ray machine and the large detector are controlled through the motion controller, so that source detection linkage is realized in the detection process.
3. Through the combination of a ray machine, a large detector and a small detector, different detectors can be selected for detection according to different types of workpieces to be detected, and the two detectors can share one ray machine.
In the invention, the technical schemes can be combined with each other to realize more preferable combination schemes. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout.
Fig. 1 is a schematic structural diagram of a multi-mode radiation detection apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a multi-mode radiation detecting apparatus according to an embodiment of the present invention;
FIG. 3 is a second schematic diagram illustrating the operation of a multi-mode radiation detection apparatus according to an embodiment of the present invention;
fig. 4 is a second schematic structural diagram of a multi-mode radiation detection apparatus according to an embodiment of the present invention;
fig. 5 is a third schematic structural diagram of a multi-mode radiation detection apparatus according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a second motion mechanism provided in an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a fifth motion mechanism according to an embodiment of the present invention.
Reference numerals are as follows:
1-ray machine upright post; 2-ray machine; 3-a workpiece turntable;
4-large detector; 5-large detector column; 6-small detector cantilever;
7-small detector; 8-workpiece to be detected; 9-a first slide rail;
10-a first slider; 11-a ray end support mechanism; 12-ray end crank arm link;
13-bearing inner ring; 14-a bearing outer ring; 15-a second servo motor;
16-an equipment base; 17-a third slide rail; 18-a third slide;
19-a fourth slide rail; 20-a fourth slider; 21-large detector end support mechanism;
22-big detector end crank arm connecting rod; 23-connecting blocks; 24-a fifth servomotor;
25-a sixth slide rail; 26-a sixth slide; 27-telescopic rod.
Detailed Description
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate preferred embodiments of the invention and together with the description, serve to explain the principles of the invention and not to limit the scope of the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Where the terms "first position" and "second position" are two different positions, and where a first feature is "over", "above" and "on" a second feature, it is intended that the first feature is directly over and obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In one embodiment of the present invention, a multi-mode radiation detection device is disclosed, as shown in fig. 1.
The detection device includes: the device comprises an X-ray machine upright post 1, an X-ray machine 2, a workpiece rotary table 3, a large detector 4, a large detector upright post 5, a small detector cantilever 6, a small detector 7 and a motion controller;
the ray machine upright post 1 and the large detector upright post 5 are arranged on two sides of the workpiece rotary table 3;
the ray machine 2 can be installed on the ray machine upright post 1 in a pitching mode and can slide up and down along the ray machine upright post 1; it will be appreciated that the ray machine 2 can be tilted and moved up and down relative to the ray machine column 1.
The large detector 4 is arranged on the large detector upright post 5 in a pitching manner and can slide up and down along the large detector upright post 5;
the workpiece to be detected is arranged on the workpiece rotary table 3;
the small detector cantilever 6 is vertically and fixedly connected with the ray machine upright post 1, the small detector 7 is arranged on the small detector cantilever 6 and can move up and down and left and right along the small detector cantilever 6, and the small detector 7 can penetrate into the workpiece to be detected for detection;
the motion controller is used for controlling the positions of the ray machine 2, the large detector 4 and the small detector 7 and the pitch angles of the ray machine 2 and the large detector 4, so that source detection linkage is realized in the detection process, and a central ray beam emitted by the ray machine 2 is kept to be always vertical to the surface of the large detector 4/the small detector 7 and to pass through the central point of the large detector 4/the small detector 7.
Specifically, the detection device has two detection modes, namely a large detector detection mode and a small detector detection mode:
in the implementation, as shown in fig. 2, in the large detector detection mode, the workpiece 8 to be detected is arranged on the workpiece turntable 3, and the large detector 4 and the ray machine 2 are used for transillumination imaging of the workpiece 8 to be detected. Under the detection mode of the large detector, the ray machine can realize up-and-down movement and pitching rotation, and the large detector can realize up-and-down, left-and-right movement and pitching rotation.
By moving the ray machine 2 up and down, rotating the ray machine 2 in a pitching manner, moving the large detector 4 up and down and rotating the large detector 4 in a pitching manner, the source detection linkage is realized in the detection process, and the central beam of the ray emitted by the ray machine 2 is kept to be always vertical to the surface of the large detector 4 and pass through the central point of the large detector 4. It should be noted that the source detection linkage means that after the position of the ray machine 2 or the large detector 4 is changed, the corresponding large detector 4 or the ray machine 2 is correspondingly changed and moves to a specified position, so that the central beam of the ray emitted by the ray machine 2 is always perpendicular to the surface of the large detector 4 and passes through the central point of the large detector 4. The position of the ray machine 2 or the large detector 4 can be changed manually, and the position of the ray machine 2 or the large detector 4 can also be changed in an automatic adjustment mode of a motion controller.
As shown in fig. 3, in the small detector detection mode, the workpiece 8 to be detected is arranged on the workpiece turntable 3, and the small detector 7 and the ray machine 2 are used for transillumination imaging of the workpiece 8 to be detected. Under the detection mode of the small detector, the ray machine only needs to move up and down, does not need to rotate in a pitching manner, and the small detector can move up and down and left and right.
The small detector 7 is enabled to be deep into a workpiece 8 to be detected to detect by moving the small detector 7 up and down, and then the ray machine 2 is enabled to move up and down to realize source detection linkage in the detection process, so that the central beam of the ray emitted by the ray machine 2 is kept to be always vertical to the surface of the small detector 7 and to pass through the central point of the small detector 7. Meanwhile, the distance between the ray machine 2 and the small detector 7 can be adjusted by moving the small detector 7 left and right, so that the transillumination focal length and the amplification ratio can be adjusted.
Through the combination of the small detector 7 and the ray machine 2, single-wall transillumination of a workpiece 8 to be detected is realized, so that the contrast sensitivity and the spatial resolution of an image received by the small detector 7 are improved, and whether a defect image on the image is on the front wall or the rear wall can be accurately determined.
Compared with the prior art, the multi-mode ray detection device provided by the embodiment realizes single-wall transillumination of a workpiece to be detected through the combination of the small detector and the ray machine, so that the contrast sensitivity and the spatial resolution of an image received by the small detector are improved, and whether a defect image on the image is on the front wall or the rear wall can be accurately determined; in addition, through the combination of a large detector and a ray machine, the full-coverage detection of a large-size workpiece is realized, the scanning and imaging times are reduced, and the single scanning and imaging field of view is increased; meanwhile, the large detector and the small detector can share one ray machine, and the use efficiency of the ray machine is improved.
Further, as shown in fig. 4, the detection device further includes first to fifth motion actuators and first to fifth motion mechanisms;
the motion controller controls the first motion mechanism to move through the first motion actuator so as to drive the ray machine to move up and down;
the motion controller controls the second motion mechanism to move through a second motion actuator so as to drive the ray machine to rotate in a pitching manner;
the motion controller controls a third motion mechanism to move through a third motion actuator so as to drive the large detector to move left and right;
the motion controller controls a fourth motion mechanism to move through a fourth motion actuator so as to drive the large detector to move up and down;
and the motion controller controls the motion of the fifth motion mechanism through the fifth motion actuator, so that the large detector is driven to rotate in a pitching manner.
During implementation, after the ray machine moves to a certain position point, the motion controller controls the third motion actuator, the fourth motion actuator and/or the fifth motion actuator to respectively move the large detector left and right, move the large detector up and down through the fourth motion mechanism and/or rotate the large detector in a pitching manner through the fifth motion mechanism, so that source detection linkage is realized in the detection process, and a central ray beam emitted by the ray machine is kept to be always vertical to the surface of the large detector and to pass through the central point of the large detector.
Or after the large detector moves to a certain position point, the motion controller respectively controls the first motion actuator and/or the second motion actuator to enable the ray machine to move up and down and/or the second motion mechanism to enable the ray machine to rotate in a pitching mode through the first motion actuator and/or the second motion actuator, so that source detection linkage is achieved in the detection process, and a central ray beam emitted by the ray machine is kept to be perpendicular to the surface of the large detector and to pass through the central point of the large detector all the time.
Preferably, as shown in fig. 5, the first motion actuator comprises a first servo driver, a first servo motor; the first movement mechanism comprises a first slide rail 9 and a first slide block 10; the first slide rail 9 is arranged on the ray machine upright post 1, and the first slide block 10 is connected with the first servo motor and can slide up and down along the first slide rail 9. It can be understood that the first servo driver drives the first servo motor to drive the first slide block 10 in the first moving mechanism to slide up and down on the first slide rail 9.
As shown in fig. 6, the second motion actuator includes a second servo driver, a second servo motor 15; the second movement mechanism comprises a ray end supporting mechanism 11, a ray end crank arm connecting rod 12, a bearing inner ring 13 and a bearing outer ring 14; one end of the ray end supporting mechanism 11 is fixedly connected with the first sliding block 10, and the other end of the ray end supporting mechanism is fixedly connected with the bearing outer ring 14; one end of the radial end crank arm connecting rod 12 is connected with the second servo motor 15, and the other end of the radial end crank arm connecting rod is fixedly connected with the bearing inner ring 13; the bearing inner ring 13 can rotate relative to the bearing outer ring 14, the ray machine 2 is arranged in the bearing inner ring and fixedly connected with the bearing inner ring 13, and the ray machine is driven by the second servo motor 15 to tilt downwards. It can be understood that the second servo driver drives the second servo motor 15 to drive the radial end crank arm connecting rod 12 and further drive the bearing inner ring 13 to rotate, and meanwhile, the radial end supporting mechanism 11 is fixedly connected with the bearing outer ring 14, so that the ray machine 2 fixedly connected with the bearing inner ring 13 rotates in a pitching manner.
Preferably, as shown in fig. 5, the detection apparatus further includes an apparatus base 16, and the ray machine column 1, the large detector column 5, and the workpiece turntable 3 are all disposed on the apparatus base 1. It can be understood that the ray machine upright post 1, the large detector upright post 5 and the workpiece are arranged on the equipment base at the same time, when the detection device needs to be moved in a large range, only the equipment base needs to be moved, and the mobility of the detection device can be provided.
Preferably, as shown in fig. 5, the third motion actuator comprises a third servo driver, a third servo motor; the third movement mechanism comprises a third slide rail 17 and a third slide block 18, and the third slide rail 17 is arranged on the equipment base 16 along the connecting line direction of the ray machine upright 1 and the large detector upright 5; the third slide block 18 is connected with the third servo motor and can move left and right along the third slide rail 17; the large detector column 5 is arranged on the third slide block 17. It can be understood that the third servo driver drives the third servo motor to drive the third slide block 18 to move left and right on the third slide rail 17, and the large detector upright post 5 is arranged on the third slide block 17, so that the large detector upright post 5 can be further driven to move left and right.
As shown in fig. 5, the fourth motion actuator includes a fourth servo driver and a fourth servo motor; the fourth movement mechanism comprises a fourth slide rail 19 and a fourth slide block 20; the fourth slide rail 19 is arranged on the large detector upright post 5, and the fourth slide block 20 is connected with the fourth servo motor and can slide up and down along the fourth slide rail 19; it can be understood that the fourth servo driver drives the fourth servo motor to drive the fourth slide block 20 to slide up and down on the fourth slide rail 19.
As shown in fig. 7, the fifth motion actuator includes a fifth servo driver, a fifth servo motor 24; the fifth movement mechanism comprises a large detector end supporting mechanism 21, a large detector end crank arm connecting rod 22 and a connecting block 23; one end of the large detector end supporting mechanism 21 is fixedly connected with the fourth sliding block 20, and the other end of the large detector end supporting mechanism is rotatably connected with the connecting block 23; one end of the large detector end crank arm connecting rod 22 is connected with the fifth servo motor, and the other end of the large detector end crank arm connecting rod is fixedly connected with the connecting block 23; the large detector 4 is fixedly connected with the connecting block 23, and is driven by the fifth servo motor to pitch and rotate. As can be understood, the fifth servo driver drives the fifth servo motor 24 to drive the crank arm connecting rod 22 at the end of the large detector and the connecting block 23, so that the large detector 4 fixedly connected with the connecting block 23 rotates in a pitching manner; meanwhile, the large detector end supporting mechanism 21 is fixedly connected with the fourth sliding block 20, and when the fourth sliding block 20 moves up and down on the large detector upright post 5, the large detector 4 is driven to move up and down.
Preferably, the motion controller is configured to send a control instruction to the first to fifth servo drivers, and the first to fifth servo drivers drive the respective servo motors to drive the respective motion mechanisms to move to the designated positions according to the control instruction; the first to fifth servo motors are also used for sending respective positions to the motion controller through respective servo drivers.
It can be understood that the motion controller can determine the positions of the ray machine, the large detector and the small detector and the pitching angle of the ray machine and the large detector according to the positions of the servo motors, and realize the source detection linkage according to the positions and the pitching angles.
In the implementation process, after the ray machine moves to a certain position point, the motion controller sends a control instruction to the third servo driver, the fourth servo driver and/or the fifth servo driver, and the third servo driver, the fourth servo driver and/or the fifth servo driver drive the respective servo motors to drive the respective motion mechanisms to move to the specified positions according to the control instruction, so that the source detection linkage is realized in the detection process, and the central beam of the ray sent by the ray machine is kept to be always vertical to the surface of the large detector and to pass through the central point of the large detector.
Or after the large detector moves to a certain position point, the motion controller sends a control instruction to the first servo driver and/or the second servo driver, and the first servo driver and/or the second servo driver drive the respective servo motors to drive the respective motion mechanisms to move to the specified positions according to the control instruction, so that source detection linkage is realized in the detection process, and a central ray beam sent by the ray machine is kept to be always vertical to the surface of the large detector and pass through the central point of the large detector.
Compared with the prior art, in the multi-mode ray detection device provided by the embodiment, the motion controller receives the control instruction through the first to fifth servo drivers respectively, and drives the respective servo motors to drive the respective motion mechanisms according to the control instruction, so that the ray machine or the large detector moves to the designated position.
Further, the motion controller realizes linkage of the ray machine and the large detector in the following mode:
when the focal length F of the ray machine can be changed, the motion controller automatically calculates the position and the pitch angle of the ray machine according to the position and the pitch angle of the large detector and the horizontal distance between the large detector and the ray machine:
SZ＝DZ-DX·tan(DP)；
SP＝DP；
or, the motion controller automatically calculates the position and the pitch angle of the large detector according to the horizontal distance between the large detector and the ray machine, the position and the pitch angle of the ray machine:
DZ＝SZ+DX·tan(SP)；
DP＝SP；
DX represents a horizontal distance between a central point of the large detector and a focus of the ray machine, DZ represents a vertical distance between the central point of the large detector and a horizontal plane where the workpiece rotary table is located, DP represents a pitch angle of the large detector, SZ represents a vertical distance between the focus of the ray machine and the horizontal plane where the workpiece rotary table is located, and SP represents a pitch angle of the ray machine.
Further, the motion controller realizes the linkage of the ray machine and the large detector in the following modes:
when the focal length F of the ray machine is kept unchanged, the motion controller automatically calculates the position and the pitch angle of the ray machine and the horizontal distance between the large detector and the ray machine according to the position and the pitch angle of the large detector and the focal length of the ray machine:
SZ＝DZ-F·sin(DP)；
SP＝DP；
DX＝F·cos(DP)；
or, the motion controller automatically calculates the position and the pitch angle of the large detector and the horizontal distance between the large detector and the ray machine according to the position and the pitch angle of the ray machine and the focal length of the ray machine:
DZ＝SZ+F·sin(SP)；
DP＝SP；
DX＝F·cos(SP)；
DX represents a horizontal distance between a central point of the large detector and a focus of the ray machine, DZ represents a vertical distance between the central point of the large detector and a horizontal plane where the workpiece rotary table is located, DP represents a pitch angle of the large detector, SZ represents a vertical distance between the focus of the ray machine and the horizontal plane where the workpiece rotary table is located, and SP represents a pitch angle of the ray machine.
In implementation, when the focal length F of the ray machine can be changed, the motion controller automatically calculates the position and the pitch angle of the ray machine according to the position and the pitch angle of the large detector and the horizontal distance between the large detector and the ray machine, or the motion controller automatically calculates the position and the pitch angle of the large detector according to the horizontal distance between the large detector and the ray machine, the position and the pitch angle of the ray machine.
And under the condition that the focal length F of the ray machine is not changed, the motion controller automatically calculates the position and the pitch angle of the ray machine and the horizontal distance between the large detector and the ray machine according to the position and the pitch angle of the large detector, or automatically calculates the position and the pitch angle of the large detector and the horizontal distance between the large detector and the ray machine according to the position and the pitch angle of the ray machine and the focal length of the ray machine.
Compared with the prior art, the multi-mode ray detection device provided by the embodiment can accurately calculate the position and the pitch angle of the changed ray machine according to the position and the pitch angle of the changed large detector respectively under two conditions of whether the focal length F of the ray machine is changed or not, or accurately calculate the position and the pitch angle of the large detector according to the position and the pitch angle of the ray machine, so that the automation of the detection process is improved.
Further, as shown in fig. 4, the detection device further includes a sixth motion actuator, a seventh motion actuator, a sixth motion mechanism, and a seventh motion mechanism;
the motion controller controls the sixth motion mechanism to move through a sixth motion actuator so as to drive the small detector to move left and right;
and the motion controller controls the seventh motion mechanism to move through a seventh motion actuator so as to drive the small detector to move up and down.
Preferably, as shown in fig. 5, the sixth motion actuator comprises a sixth servo driver, a sixth servo motor; the sixth movement mechanism comprises a sixth sliding rail and a sixth sliding block; the sixth sliding rail is arranged on the small detector cantilever, and the sixth sliding block is connected with the sixth servo motor and can move left and right along the sixth sliding rail;
the seventh motion actuator comprises a seventh servo driver and a seventh servo motor; the seventh motion mechanism comprises a telescopic rod 27; the telescopic rod 27 is arranged on the sixth sliding block 26, and the small detector 7 is arranged at the lower end of the telescopic rod 27; the telescopic rod 27 is connected with the seventh servo motor and is driven by the seventh servo motor to stretch, so that the small detector 7 is driven to move up and down;
the motion controller is used for sending control instructions to the sixth servo driver and the seventh servo driver, and the sixth servo driver and the seventh servo driver drive the respective servo motors to drive the respective motion mechanisms to move to designated positions according to the control instructions; the sixth and seventh servo motors are also used for sending respective positions to the motion controller through respective servo drivers.
During implementation, after the position of the ray machine is changed, the motion controller sends a control instruction to the sixth servo driver and the seventh servo driver, and the sixth servo driver and the seventh servo driver drive the sixth servo motor and the seventh servo motor to move the sixth motion mechanism and the seventh motion mechanism to the specified positions according to the control instruction, so that source detection linkage is realized in the detection process, and a ray central beam sent by the ray machine is kept to be always vertical to the surface of the small detector.
Specifically, the motion controller can realize linkage through the acquired position DZ1 of the small detector and the position SZ of the ray machine; DZ1 represents the vertical distance between the central point of the small detector and the horizontal plane of the workpiece rotary table;
when the ray machine position is changed, DZ1= SZ.
Alternatively, when the small detector position is changed, SZ = DZ1.
Those skilled in the art will appreciate that all or part of the processes implemented by the motion controller according to the above embodiments may be implemented by a computer program, which may be stored in a computer-readable storage medium, to instruct the relevant hardware. The computer readable storage medium is a magnetic disk, an optical disk, a read-only memory or a random access memory.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (10)
1. A multi-mode radiation detection device, said detection device comprising: the device comprises an X-ray machine upright post, an X-ray machine, a workpiece rotary table, a large detector upright post, a small detector cantilever, a small detector and a motion controller;
the ray machine upright column and the large detector upright column are arranged on two sides of the workpiece rotary table;
the ray machine can be installed on the ray machine upright post in a pitching mode and can slide up and down along the ray machine upright post;
the large detector can be installed on the large detector upright post in a pitching mode and can slide up and down along the large detector upright post;
the workpiece to be detected is arranged on the workpiece rotary table;
the small detector cantilever is vertically and fixedly connected with the ray machine upright post, the small detector is arranged on the small detector cantilever and can move up and down and left and right along the small detector cantilever, and the small detector can penetrate into the workpiece to be detected for detection;
the motion controller is used for controlling the positions of the ray machine, the large detector and the small detector and the pitching angles of the ray machine and the large detector, so that source detection linkage is realized in the detection process, and a central ray beam emitted by the ray machine is kept to be always perpendicular to the surface of the large detector/the small detector and to pass through the central point of the large detector/the small detector.
2. The detection device according to claim 1, further comprising first to fifth motion actuators and first to fifth motion mechanisms;
the motion controller controls the first motion mechanism to move through the first motion actuator so as to drive the ray machine to move up and down;
the motion controller controls the second motion mechanism to move through a second motion actuator so as to drive the ray machine to rotate in a pitching manner;
the motion controller controls a third motion mechanism to move through a third motion actuator so as to drive the large detector to move left and right;
the motion controller controls a fourth motion mechanism to move through a fourth motion actuator so as to drive the large detector to move up and down;
and the motion controller controls the motion of the fifth motion mechanism through the fifth motion actuator, so that the large detector is driven to rotate in a pitching manner.
3. The detection device of claim 2, wherein the first motion actuator comprises a first servo drive, a first servo motor; the first movement mechanism comprises a first slide rail and a first slide block; the first slide rail is arranged on the upright post of the ray machine, and the first slide block is connected with the first servo motor and can slide up and down along the first slide rail;
the second motion actuator comprises a second servo driver and a second servo motor; the second movement mechanism comprises a ray end supporting mechanism, a ray end crank arm connecting rod, a bearing inner ring and a bearing outer ring; one end of the ray end supporting mechanism is fixedly connected with the first sliding block, and the other end of the ray end supporting mechanism is fixedly connected with the bearing outer ring; one end of the ray end crank arm connecting rod is connected with the second servo motor, and the other end of the ray end crank arm connecting rod is fixedly connected with the bearing inner ring; the bearing inner ring can rotate relative to the bearing outer ring, the ray machine is arranged on the bearing inner ring and fixedly connected with the bearing inner ring, and the ray machine is driven by the second servo motor to pitch downwards and rotate.
4. The detection apparatus according to claim 2, further comprising an equipment base on which the ray machine column, the large detector column, and the workpiece turntable are disposed.
5. The detection device of claim 4, wherein the third motion actuator comprises a third servo drive, a third servo motor; the third movement mechanism comprises a third slide rail and a third slide block, and the third slide rail is arranged on the equipment base along the connecting line direction of the ray machine upright column and the large detector upright column; the third sliding block is connected with the third servo motor and can move left and right along the third sliding rail; the large detector upright column is arranged on the third sliding block;
the fourth motion actuator comprises a fourth servo driver and a fourth servo motor; the fourth movement mechanism comprises a fourth slide rail and a fourth slide block; the fourth slide rail is arranged on the large detector upright post, and the fourth slide block is connected with the fourth servo motor and can slide up and down along the fourth slide rail;
the fifth motion actuator comprises a fifth servo driver and a fifth servo motor; the fifth movement mechanism comprises a large detector end supporting mechanism, a large detector end crank arm connecting rod and a connecting block; one end of the large detector end supporting mechanism is fixedly connected with the fourth sliding block, and the other end of the large detector end supporting mechanism is rotatably connected with the connecting block; one end of the large detector end crank arm connecting rod is connected with the fifth servo motor, and the other end of the large detector end crank arm connecting rod is fixedly connected with the connecting block; the large detector is fixedly connected with the connecting block, and the fifth servo motor is driven to pitch and rotate.
6. The detection device according to claim 3 or 5, wherein the motion controller is configured to issue control commands to the first to fifth servo drivers, and the first to fifth servo drivers drive the respective servo motors to drive the respective motion mechanisms to move to designated positions according to the control commands; the first to fifth servo motors are also used for sending respective positions to the motion controller through respective servo drivers.
7. A detection apparatus according to claim 6, wherein the motion controller effects linkage of the ray machine with the large detector by:
when the focal length F of the ray machine can be changed, the motion controller automatically calculates the position and the pitch angle of the ray machine according to the position and the pitch angle of the large detector and the horizontal distance between the large detector and the ray machine:
SZ＝DZ-DX·tan(DP)；
SP＝DP；
or, the motion controller automatically calculates the position and the pitch angle of the large detector according to the horizontal distance between the large detector and the ray machine, the position and the pitch angle of the ray machine:
DZ＝SZ+DX·tan(SP)；
DP＝SP；
DX represents a horizontal distance between a central point of the large detector and a focus of the ray machine, DZ represents a vertical distance between the central point of the large detector and a horizontal plane where the workpiece rotary table is located, DP represents a pitch angle of the large detector, SZ represents a vertical distance between the focus of the ray machine and the horizontal plane where the workpiece rotary table is located, and SP represents a pitch angle of the ray machine.
8. A test device according to claim 6, wherein the motion controller is configured to effect the linkage of the ray machine to the large detector by:
when the focal length F of the ray machine is kept unchanged, the motion controller automatically calculates the position and the pitch angle of the ray machine and the horizontal distance between the large detector and the ray machine according to the position and the pitch angle of the large detector:
SZ＝DZ-F·sin(DP)；
SP＝DP；
DX＝F·cos(DP)；
or, the motion controller automatically calculates the position and the pitch angle of the large detector and the horizontal distance between the large detector and the ray machine according to the position and the pitch angle of the ray machine and the focal length of the ray machine:
DZ＝SZ+F·sin(SP)；
DP＝SP；
DX＝F·cos(SP)；
DX represents a horizontal distance between a central point of the large detector and a focus of the ray machine, DZ represents a vertical distance between the central point of the large detector and a horizontal plane where the workpiece rotary table is located, DP represents a pitch angle of the large detector, SZ represents a vertical distance between the focus of the ray machine and the horizontal plane where the workpiece rotary table is located, and SP represents a pitch angle of the ray machine.
9. The detection device of claim 1, further comprising a sixth motion actuator, a seventh motion actuator, a sixth motion mechanism, and a seventh motion mechanism;
the motion controller controls the sixth motion mechanism to move through a sixth motion actuator so as to drive the small detector to move left and right;
and the motion controller controls the seventh motion mechanism to move through a seventh motion actuator so as to drive the small detector to move up and down.
10. The detection apparatus of claim 9, wherein the sixth motion actuator comprises a sixth servo drive, a sixth servo motor; the sixth movement mechanism comprises a sixth sliding rail and a sixth sliding block; the sixth sliding rail is arranged on the small detector cantilever, and the sixth sliding block is connected with the sixth servo motor and can move left and right along the sixth sliding rail;
the seventh motion actuator comprises a seventh servo driver and a seventh servo motor; the seventh motion mechanism comprises a telescopic rod; the telescopic rod is arranged on the sixth sliding block, and the small detector is arranged at the lower end of the telescopic rod; the telescopic rod is connected with the seventh servo motor and is driven by the seventh servo motor to stretch, so that the small detector is driven to move up and down;
the motion controller is used for sending control instructions to the sixth servo driver and the seventh servo driver, and the sixth servo driver and the seventh servo driver drive the respective servo motors to drive the respective motion mechanisms to move to designated positions according to the control instructions; the sixth and seventh servo motors are also used for sending respective positions to the motion controller through respective servo drivers.
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| CN202211336912.7A CN115684217A (en) | 2022-10-28 | 2022-10-28 | Multi-mode ray detection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117169257A (en) * | 2023-11-01 | 2023-12-05 | 上海超群检测科技股份有限公司 | X-ray imaging device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117169257A (en) * | 2023-11-01 | 2023-12-05 | 上海超群检测科技股份有限公司 | X-ray imaging device |
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