CN107966113B - Control method of die body imaging test bed - Google Patents
Control method of die body imaging test bed Download PDFInfo
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- CN107966113B CN107966113B CN201711258988.1A CN201711258988A CN107966113B CN 107966113 B CN107966113 B CN 107966113B CN 201711258988 A CN201711258988 A CN 201711258988A CN 107966113 B CN107966113 B CN 107966113B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The invention relates to a control method of a die body imaging test bed, which comprises the following steps: 1. starting the objective table and the grating to enable the objective table to run at a constant speed, and enabling the grating to return to a zero position; 2. recording the photographing times to be zero; 3. sending out a photographing signal, enabling the grating to rotate at a constant speed, stopping photographing the signal when the object stage rotates for 30 degrees from a photographing starting position, and enabling the grating to rotate for 23-27 degrees; 4. adding one to the photographing times; if the photographing times are integral multiples of six, turning to the step 6; otherwise, turning to step 5; 5. the object stage continues to rotate for 30 degrees, the grating decelerates and rotates for 5 degrees, and the step 3 is carried out; 6. the grating rotates 5 ° while the stage completes the following specific actions: after the objective table rotates once, before the 7 th photographing: rotating for 60 degrees, and turning to the step 3; after the objective table rotates for two circles, before 13 th photographing: rotating 120 degrees, and turning to the step 3; after the object stage rotates three times, before 19 th photographing: rotated 30 deg., and turned to step 3.
Description
Technical Field
The invention relates to the technical field of control of die body imaging, in particular to a control method of a die body imaging test bed.
Background
In phantom imaging experiments, it is required to take a picture of the same position of the phantom using gratings with different fringes. After the imaging of different positions of the die body on different stripe gratings is obtained, the three-dimensional image of the die body can be reconstructed according to the spatial position relation of the obtained image on the die body. The three-dimensional reconstruction algorithm requires accurate positioning of the motif and the grating, and the acquired image sequence has a determined spatial relationship. The control method adopted at present is complex, and the spatial relationship of the acquired images is not clear enough.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a control method of a die body imaging test bed, which can simplify the control requirement and ensure that the acquired images have a definite spatial relationship.
The invention is realized by the following technical proposal, provides a control method of a die body imaging test bed,
the method comprises the following steps:
(1) Starting the objective table and the grating to enable the objective table to run at a constant speed, and enabling the grating to return to a zero position;
(2) Recording the photographing times to be zero;
(3) Sending out a photographing signal, enabling the grating to rotate at a constant speed, stopping photographing the signal when the object stage rotates for 30 degrees from a photographing starting position, and enabling the grating to rotate for 23-27 degrees at the moment;
(4) Adding one to the photographing times; if the photographing times are integral multiples of six, turning to the step (6); otherwise go to step (5);
(5) The object stage continues to rotate for 30 degrees, and simultaneously, the grating decelerates and rotates for 5 degrees, and the step (3) is carried out;
(6) The grating is decelerated, the object stage rotates 5 degrees when the object stage completes the following specific actions, and the object stage simultaneously completes the following actions according to the difference of photographing times: after the objective table rotates once, before the 7 th photographing: rotating for 60 degrees, and turning to the step (3); after the objective table rotates for two circles, before 13 th photographing: rotating 120 degrees, and turning to the step (3); after the object stage rotates three times, before 19 th photographing: rotating for 30 degrees, and turning to the step (3); after the objective table rotates four times, before the 25 th photographing: rotating 120 degrees, and turning to the step (3); after the objective table rotates five circles, before the 31 st photographing: rotating for 60 degrees, and turning to the step (3); after the object stage rotates six circles, after 36 th photographing: stop, go to step (7).
(7) Stopping the grating and ending the experiment.
As an optimization, in the step (4), after the control system sends out the photographing signal, the photographing system continuously photographs at a preset frame rate until the photographing signal stops.
The beneficial effects of the invention are as follows: the positioning precision requirements and experimental procedures of the objective table and the grating are greatly simplified, the cost of the experiment table is obviously reduced, and the experimental efficiency is improved.
Drawings
FIG. 1 is a schematic view of a stage of the present invention;
shown in the figure.
Detailed Description
In order to clearly illustrate the technical characteristics of the scheme, the scheme is explained below through a specific embodiment.
A control method of a die body imaging test bed is suitable for a die body imaging test bed which is formed by three grating fringe patterns formed by 12 grating components and collects 2160 images of a die body. In the die body imaging test bed, gratings with different stripes are arranged on a circular ring, and the die body is placed on an objective table, so that the rotation of the gratings and the objective table is reasonably controlled, and photographed images of the gratings with different stripes and different angles of the die body can be obtained.
In the method, the grating is divided into 3 areas, namely a grating 1 area, a grating 2 area and a grating 3 area, and each area is 4 pieces. The stage (phantom) is divided into 12 slices, designated as a, b, c, d, e, f, g, h, i, j, k, l as shown in FIG. 1.
When the test starts, the grating is positioned at a zero position, and the position corresponds to the starting point (clockwise direction) of the a piece of the objective table; when the grating rotates, the grating sequentially passes through the 1, 2 and 3 partitions of the grating. The imaging mode of the embodiment includes imaging at intervals of 0.5 degrees, a photographing frame rate of 30FPS, and a rotational speed of the objective table of 2.5RPM (15 DEG/second), and specifically includes the following steps:
1. pressing a start button;
2. starting the objective table and the grating to enable the objective table to run at a constant speed, and enabling the grating to return to a zero position;
3、NOP；
4. recording the photographing times to be zero;
5. sending out a photographing signal (a contact is closed, a transistor outputs DC24V voltage), enabling the grating to rotate at a constant speed, starting constant-speed operation after the grating is ready for photographing, finishing photographing, adjusting the rotating speed by the grating when entering a grating modulator Wen Jiange, crossing the interval without grating stripes, entering the next grating stripe area in advance, enabling the grating to rotate at a constant speed, and enabling the grating to operate in the same stripe area when photographing next time to obtain an image required by an experiment, stopping photographing signals (contact opening) when the object stage rotates 30 DEG from a photographing starting position, and enabling the grating to rotate by about 25 DEG;
6. adding one to the photographing times; if the photographing times are integer multiples of six, turning to the step 8; otherwise, turning to the step 7;
7. the objective table continues to rotate 30 degrees, and simultaneously, the grating decelerates and rotates 5 degrees, and the step 5 is reached;
8. the grating is decelerated and rotated 5 ° while the stage completes the following specific actions. According to the difference of shooting times, the following actions are completed by the object stage at the same time: after the objective table rotates once, before the 7 th photographing: rotating for 60 degrees, and turning to the step 5; after the objective table rotates for two circles, before 13 th photographing: rotating 120 degrees, and turning to the step 5; after the object stage rotates three times, before 19 th photographing: rotating for 30 degrees, and turning to the step 5; after the objective table rotates four times, before the 25 th photographing: rotating 120 degrees, and turning to the step 5; after the objective table rotates five circles, before the 31 st photographing: rotating for 60 degrees, and turning to the step 5; after the object stage rotates six circles, after 36 th photographing: stopping. Go to step 9.
9. Stopping the grating and ending the experiment.
In step 5, after the control system sends out the photographing signal, the photographing system continuously photographs at a preset frame rate until the photographing signal stops.
According to the control logic, photographing sequentially obtains images of the following areas:
stage first turn: imaging the grating 1 region: a-c; imaging a grating 2 region: e-g; imaging a grating 3 region: i-k;
stage second circle: imaging the grating 1 region: b-d; imaging a grating 2 region: f-h; imaging a grating 3 region: j-l;
stage third turn: imaging the grating 1 region: e-g; imaging a grating 2 region: i-k; imaging a grating 3 region: a-c;
fourth circle of objective table: imaging the grating 1 region: f-h; imaging a grating 2 region: j-l; imaging a grating 3 region: b-d;
fifth circle of objective table: imaging the grating 1 region: i-k; imaging a grating 2 region: a-c; imaging a grating 3 region: e-g;
sixth turn of objective table: imaging the grating 1 region: j-l; imaging a grating 2 region: b-d; imaging a grating 3 region: f-h.
After the objective table selects six circles, the same position of each partition of the die body respectively obtains a photographing image passing through the 1-3 partitions of the grating.
By using the control method of the invention, all interference images required by three-dimensional reconstruction can be obtained in the continuous rotation process of the grating and the objective table, and the obtained image sequence has a definite spatial position relationship.
Of course, the above description is not limited to the above examples, and the technical features of the present invention that are not described may be implemented by or by using the prior art, which is not described herein again; the above examples and drawings are only for illustrating the technical scheme of the present invention and not for limiting the same, and the present invention has been described in detail with reference to the preferred embodiments, and it should be understood by those skilled in the art that changes, modifications, additions or substitutions made by those skilled in the art without departing from the spirit of the present invention and the scope of the appended claims.
Claims (2)
1. A control method of a die body imaging test bed is characterized by comprising the following steps of: the gratings with different stripes are arranged on a circular ring, and the die body is arranged on the object stage; dividing the grating into 3 areas, namely a grating 1 area, a grating 2 area and a grating 3 area, wherein each area is 4 pieces; the stage is divided into 12 pieces, which are marked as a, b, c, d, e, f, g, h, i, j, k and l;
when the test starts, the grating is positioned at a zero position, and the position corresponds to the starting point of the a piece of the objective table; when the grating rotates, the grating sequentially passes through the 1, 2 and 3 partitions of the grating;
the method comprises the following steps:
(1) Starting the objective table and the grating to enable the objective table to run at a constant speed, and enabling the grating to return to a zero position;
(2) Recording the photographing times to be zero;
(3) Sending out a photographing signal, enabling the grating to rotate at a constant speed, stopping photographing the signal when the object stage rotates for 30 degrees from a photographing starting position, and enabling the grating to rotate for 23-27 degrees at the moment;
(4) Adding one to the photographing times; if the photographing times are integral multiples of six, turning to the step (6); otherwise go to step (5);
(5) The object stage continues to rotate for 30 degrees, and simultaneously, the grating decelerates and rotates for 5 degrees, and the step (3) is carried out;
(6) The grating is decelerated, the object stage rotates 5 degrees when the object stage completes the following specific actions, and the object stage simultaneously completes the following actions according to the difference of photographing times: after the objective table rotates once, before the 7 th photographing: rotating for 60 degrees, and turning to the step (3); after the objective table rotates for two circles, before 13 th photographing: rotating 120 degrees, and turning to the step (3); after the object stage rotates three times, before 19 th photographing: rotating for 30 degrees, and turning to the step (3); after the objective table rotates four times, before the 25 th photographing: rotating 120 degrees, and turning to the step (3); after the objective table rotates five circles, before the 31 st photographing: rotating for 60 degrees, and turning to the step (3); after the object stage rotates six circles, after 36 th photographing: stopping, and turning to the step (7);
(7) Stopping the grating and ending the experiment.
2. The method for controlling a phantom imaging test stand according to claim 1, wherein: in the step (3), after the control system sends out the photographing signal, the photographing system continuously photographs at a preset frame rate until the photographing signal stops.
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| CN201711258988.1A CN107966113B (en) | 2017-12-04 | 2017-12-04 | Control method of die body imaging test bed |
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| CN107966113A CN107966113A (en) | 2018-04-27 |
| CN107966113B true CN107966113B (en) | 2023-08-11 |
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| CN103365067A (en) * | 2012-04-01 | 2013-10-23 | 中国科学院高能物理研究所 | Grating shearing imaging device and method capable of realizing three-dimensional dynamic observation |
| CN104457614A (en) * | 2014-11-11 | 2015-03-25 | 南昌航空大学 | Stripe reflection three-dimensional measurement method based on binary stripe defocusing |
| CN204559704U (en) * | 2015-05-20 | 2015-08-12 | 哈尔滨康远多维科技发展有限公司 | Small angle oscillation complex parts three-dimensional scanner |
| CN204963810U (en) * | 2015-08-13 | 2016-01-13 | 黄喜荣 | Three -dimensional scanning system of developments object |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019127385A1 (en) * | 2017-12-29 | 2019-07-04 | Shenzhen United Imaging Healthcare Co., Ltd. | Systems and methods for patient positioning |
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- 2017-12-04 CN CN201711258988.1A patent/CN107966113B/en active Active
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| CN101881922A (en) * | 2010-05-26 | 2010-11-10 | 程亚奇 | True three-dimensional display system |
| CN103365067A (en) * | 2012-04-01 | 2013-10-23 | 中国科学院高能物理研究所 | Grating shearing imaging device and method capable of realizing three-dimensional dynamic observation |
| CN104457614A (en) * | 2014-11-11 | 2015-03-25 | 南昌航空大学 | Stripe reflection three-dimensional measurement method based on binary stripe defocusing |
| CN204559704U (en) * | 2015-05-20 | 2015-08-12 | 哈尔滨康远多维科技发展有限公司 | Small angle oscillation complex parts three-dimensional scanner |
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