CN108037145A - A kind of test platform and test method for computer dislocation scanning and imaging system - Google Patents
A kind of test platform and test method for computer dislocation scanning and imaging system Download PDFInfo
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- CN108037145A CN108037145A CN201711216315.XA CN201711216315A CN108037145A CN 108037145 A CN108037145 A CN 108037145A CN 201711216315 A CN201711216315 A CN 201711216315A CN 108037145 A CN108037145 A CN 108037145A
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- 238000012360 testing method Methods 0.000 title claims abstract description 40
- 238000010998 test method Methods 0.000 title claims abstract description 14
- 238000003384 imaging method Methods 0.000 title abstract description 35
- 238000012545 processing Methods 0.000 claims abstract description 41
- 230000001105 regulatory effect Effects 0.000 claims abstract description 23
- 230000033001 locomotion Effects 0.000 claims description 78
- 230000007246 mechanism Effects 0.000 claims description 41
- 230000003028 elevating effect Effects 0.000 claims description 28
- 230000005540 biological transmission Effects 0.000 claims description 18
- 238000006073 displacement reaction Methods 0.000 claims description 15
- 230000008878 coupling Effects 0.000 claims description 12
- 238000010168 coupling process Methods 0.000 claims description 12
- 238000005859 coupling reaction Methods 0.000 claims description 12
- 230000002459 sustained effect Effects 0.000 claims description 6
- 230000001360 synchronised effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- 238000013170 computed tomography imaging Methods 0.000 description 8
- 238000001514 detection method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000008054 signal transmission Effects 0.000 description 4
- 238000002591 computed tomography Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000005693 optoelectronics Effects 0.000 description 2
- 238000003325 tomography Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
- G01N23/046—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material using tomography, e.g. computed tomography [CT]
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/10—Different kinds of radiation or particles
- G01N2223/101—Different kinds of radiation or particles electromagnetic radiation
- G01N2223/1016—X-ray
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/30—Accessories, mechanical or electrical features
- G01N2223/33—Accessories, mechanical or electrical features scanning, i.e. relative motion for measurement of successive object-parts
- G01N2223/3303—Accessories, mechanical or electrical features scanning, i.e. relative motion for measurement of successive object-parts object fixed; source and detector move
Abstract
The invention discloses a kind of test platform and test method for computed tomograph scanner system.The test platform includes master control set, x-ray source, objective table, detector and processing unit；Corresponding telecontrol equipment is provided with x-ray source, on objective table, first position regulating device is provided with detector, x-ray source, detector, processing unit, telecontrol equipment are connected with master control set respectively；Objective table, detector are separately mounted on the guide rail of workbench, are respectively used to distance and the distance between radiographic source and testee between adjustment x-ray source and detector；According to different x-ray source and combinations of detectors, the kinematic parameter of corresponding telecontrol equipment is configured, realizes that axis of the testee respectively under the conditions of anode rays and oblique ray sweeps faultage image and sweep faultage image with spiral, reconstructs the image for meeting a variety of imaging demands.
Description
Technical field
The present invention relates to a kind of test platform for computer dislocation scanning and imaging system, also relates to be based on the survey
The test method that platform is realized is tried, belongs to radiography field.
Background technology
Traditional CT (Computed Tomography, computed tomography) imaging system is by mechanical movement
Mode drives x-ray source and detector to rotate around detected material, so as to obtain a series of Raw projection data.Such as
Shown in Fig. 1 and Fig. 2, the certain thickness aspect in 2 a part of testee is swept by the X-ray beam that x-ray source 1 is sent
Retouch, the X-ray beam through the aspect is received by detector 3 and is converted into visible ray, be then converted into by a series of processing
Digital data transmission to computer carries out image procossing, so as to form the faultage image of 2 a part of testee.
At present, traditional CT imaging systems are generally installed in rack using by x-ray source and detector, then penetrate X
Line source and detector are rotated around testee center, so as to obtain the faultage image of 2 a part of testee.With CT
The development of imaging technique, the faultage images that the continuous multiple sections of testee are obtained using CE-CT imaging system more at present.
No matter in traditional CT imaging systems or CE-CT imaging system, the center line of x-ray source is required to be aligned
The center (as shown in Figure 2) of detector, could obtain the faultage image of a certain section of testee or continuous multiple sections.
Due to the influence (different manufacturers slightly distinguish) of the rotation limit velocity that is limited by machinery and CT imaging systems, the CT imagings are caused to be
The temporal resolution of system, spatial resolution, density resolution etc. be not high, easily produces motion artifacts.Therefore, there is an urgent need to design
A kind of quick test fixture, for completing the test to different x-ray source and combinations of detectors, reconstructs and meets a variety of imagings
The image of demand.
The content of the invention
Primary technical problem to be solved by this invention is to provide a kind of test for computed tomograph scanner system
Platform.
Another technical problem to be solved by this invention is to provide a kind of test for computed tomograph scanner system
Method.
In order to realize foregoing invention purpose, the present invention uses following technical solutions：
First aspect according to embodiments of the present invention, there is provided a kind of test platform for computed tomograph scanner system,
Including master control set, x-ray source, objective table, detector and processing unit；Be provided with the x-ray source the first telecontrol equipment,
Second telecontrol equipment, is provided with the 3rd telecontrol equipment, the 4th telecontrol equipment on the objective table, is provided with the detector
One apparatus for adjusting position, the x-ray source, the detector, the processing unit, first telecontrol equipment, described second
Telecontrol equipment, the 3rd telecontrol equipment, the 4th telecontrol equipment are connected with the master control set respectively；The objective table,
The detector is separately mounted on the guide rail of workbench, is respectively used to adjust the spacing of the x-ray source and the detector
From the distance between with the radiographic source and testee；
According to the different x-ray sources and the combinations of detectors, the kinematic parameter of corresponding telecontrol equipment is configured, it is real
Existing axis of the testee respectively under the conditions of anode rays and oblique ray sweeps faultage image and sweeps faultage image with spiral.
Wherein more preferably, first telecontrol equipment includes the first motor, pitching rotary and the first rotary encoder, described
Pitching rotary is connected by first shaft coupling with first motor, and the pitching rotary is connected with the x-ray source；
Second telecontrol equipment includes the second motor, the first elevating drive mechanism and the first displacement sensor, and described
One elevating drive mechanism is connected by second shaft coupling with second motor, and first elevating drive mechanism is penetrated with the X
Line source connects；
3rd telecontrol equipment includes the 3rd motor, transmission mechanism and the second rotary encoder, and the 3rd motor leads to
Cross the 3rd shaft coupling to be connected with the transmission mechanism, the transmission mechanism is connected with the objective table, passes through the 3rd motor
The transmission mechanism is driven to drive the objective table rotation；
4th telecontrol equipment includes the 4th motor, the second elevating drive mechanism and second displacement sensor, and described
Two elevating drive mechanisms are connected by the 4th shaft coupling with the 4th motor, second elevating drive mechanism and the loading
Platform connects.
Wherein more preferably, second place regulating device is also respectively provided with the objective table and the third place adjusts dress
Put, the second place regulating device uses screw, and the levelness of the objective table is adjusted by adjusting the screw.
Wherein more preferably, the third place regulating device uses backing plate, and the backing plate is used to coordinate the 4th movement
Device makes the testee and the x-ray source sustained height.
Wherein more preferably, the master control set is master controller, and the master controller is provided with the first motion controller,
Two motion controllers, the 3rd motion controller, the 4th motion controller, first motion controller connect with first motor
Connecing, second motion controller is connected with second motor, and the 3rd motion controller is connected with the 3rd motor,
4th motion controller is connected with the 4th motor；Master controller respectively with the x-ray source, the detector, place
Manage device, first rotary encoder, first displacement sensor, second rotary encoder and the second displacement
Sensor connects.
Second aspect according to embodiments of the present invention, there is provided a kind of test method for computed tomograph scanner system,
Realized, included the following steps based on above-mentioned test platform：
Step S1：According to the faultage image type of the testee of required acquisition, sid value and SOD values are adjusted；
Step S2：According to sid value and SOD values, the center of the center line alignment detector of x-ray source is adjusted；
Step S3：According to the faultage image type of the testee of required acquisition, testee sweeps on adjustment objective table
Retouch position；
Step S4：Start exposure after setting the exposure parameter of x-ray source, while control the telecontrol equipment on objective table to move
Make, the axis for obtaining testee sweeps faultage image and spiral sweeps faultage image.
Wherein more preferably, in step S1, by along guide rail moving stage and detector, adjusting sid value and SOD values.
Wherein more preferably, in step S2, the kinematic parameter of the second motor and the first motor is set in processing unit, is passed through
Second motion controller and the first motion controller, which correspond to, drives second motor and first motor by the x-ray source
Adjusting of centerline to the center of alignment detector, realize the center for making the x-ray source be directed at the detector
And the angle between horizontal line is 0 °；
The detector is set to reach predetermined altitude by first position regulating device, in the processing unit described in setting
The kinematic parameter of second motor and first motor, then drives second motor will by second motion controller
The x-ray source is adjusted to suitable position, drives first motor to penetrate the X finally by first motion controller
Line source turns an angle, and realizing makes the x-ray source be directed at the folder behind the center of the detector between horizontal line
Angle is more than 0 °.
Wherein more preferably, in step S3, when needing the axis for obtaining the testee to sweep faultage image, the load is adjusted
The process of the scan position of the testee on thing platform is：The kinematic parameter of 4th motor is set in processing unit, is led to
Cross the section that the 4th motion controller drives the 4th motor to be scanned required for the testee on the objective table
Behind the center of layer alignment detector and x-ray source, the 4th motor is closed；
When need to obtain the testee it is spiral sweep faultage image when, adjust the measured object on the objective table
The process of the scan position of body is：The kinematic parameter of 4th motor is set in the processing unit, passes through the described 4th movement
Controller drives the 4th motor to be adjusted to the starting point of certain segment distance scanned required for the testee and the spy
Survey device sustained height.
Wherein more preferably, in step S4, the kinematic parameter of the 3rd motor is set in processing unit, is controlled by the 3rd movement
Device processed drives the 3rd motor to rotate the testee, and detector will receive 360 ° of models from the testee
Several optical signals of interior different angle are enclosed, and the axis that the testee is obtained after being handled by the processing unit sweeps tomography
Image；
The kinematic parameter of 3rd motor and the 4th motor is set in the processing unit, passes through the described 3rd movement
Controller and the 4th motion controller difference synchronous driving the 3rd motor and the 4th motor, revolve the testee
Also synchronous vertically movement upwards while turning, the detector will receive continuous multiple disconnected from the testee
Some optical signals in the range of 360 ° of face, and obtain the spiral of the testee after processing unit is handled and sweep tomograph
Picture.
Computer dislocation scanning and imaging system test platform provided by the present invention can switch different x-ray sources and spy
Device combination is surveyed, by adjusting the distance of the distance of x-ray source and detector, testee and detector, and is put down by the test
The kinematic parameter of each telecontrol equipment of platform flexible configuration, under the cooperation of first position regulating device, adjustment x-ray source alignment detection
Angle behind device center between horizontal line, it is possible to achieve axis of the testee under the conditions of anode rays and oblique ray sweep and
It is spiral to sweep faultage image, the test to different x-ray source and combinations of detectors is completed, reconstructs and meets a variety of imaging demands
Image.
Brief description of the drawings
Fig. 1 is the principle schematic of traditional CT imaging system；
Fig. 2 is the principle of equal effects schematic diagram of the traditional CT imaging system shown in Fig. 1；
Fig. 3 is the structure diagram of computer dislocation scanning and imaging system test platform provided by the invention；
Fig. 4 is the schematic diagram of master control set in computer dislocation scanning and imaging system test platform provided by the present invention；
Fig. 5 is the structural representation of objective table in computer dislocation scanning and imaging system test platform provided by the present invention
Figure；
Fig. 6 is the structural representation of x-ray source in computer dislocation scanning and imaging system test platform provided by the present invention
Figure；
Fig. 7 is the structural representation of detector in computer dislocation scanning and imaging system test platform provided by the present invention
Figure；
Fig. 8 is the flow chart of computer dislocation scanning and imaging system test method provided by the present invention；
Fig. 9 is the principle schematic of computer dislocation scanning and imaging system test platform provided by the present invention；
Figure 10 is the principle of equal effects schematic diagram of the computer dislocation scanning and imaging system test platform shown in Fig. 9.
Embodiment
The technology contents of the present invention are described in further detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in Figure 3 and Figure 4, computer dislocation scanning and imaging system test platform provided by the present invention is filled including master control
Put 4, x-ray source 1, objective table 5, detector 3 and processing unit 20；Wherein, the first telecontrol equipment is provided with x-ray source 1
6th, the second telecontrol equipment 7, is provided with the 3rd telecontrol equipment 8, the 4th telecontrol equipment 9 on objective table 5, is set on detector 3
Have a first position regulating device 10, x-ray source 1, detector 3, processing unit 20, the first telecontrol equipment 6, the second telecontrol equipment 7,
3rd telecontrol equipment 8, the 4th telecontrol equipment 9 are connected with master control set respectively.Objective table 5, detector 3 are separately mounted to work
On the guide rail 11 of platform 14 so that objective table 5, detector 3 can be moved along guide rail 11.By this computed tomography into
As the test platform of system can be switched fast different x-ray sources 1 and detector 3 combines, and according to x-ray source 1 and detection
3 flexible configuration the first telecontrol equipment 6 of device, the second telecontrol equipment 7, the 3rd telecontrol equipment 8, the kinematic parameter of the 4th telecontrol equipment 9,
It can not only realize testee 2 in anode rays (behind the center of the center line alignment detector 3 of x-ray source 1, with level
Angle between line is 0 °) under the conditions of axis sweep and sweep faultage image with spiral, can also realize that (X is penetrated testee 2 in oblique ray
Behind the center of the center line alignment detector 3 of line source 1, angle between horizontal line is more than 0 °) under the conditions of axis sweep and
It is spiral to sweep faultage image, so as to reconstruct the image for meeting a variety of imaging demands.
In computer dislocation scanning and imaging system test platform provided by the present invention, as shown in Figure 3 and Figure 5, penetrated in X
The first telecontrol equipment 6 set on line source 1 is radiographic source elevating movement device, which includes the first electricity
Machine 601,603 and first rotary encoder 602 of pitching rotary, pitching rotary 603 are connected by first shaft coupling and the first motor 601
Connect, pitching rotary 603 is also connected with x-ray source 1, drives pitching rotary 603 to drive x-ray source about 1 by the first motor 601
Rotate；The second telecontrol equipment 7 set on x-ray source 1 is radiographic source linear motion device, the radiographic source linear motion device
Including the second motor 701, the first elevating drive mechanism (inside for being arranged on sleeve 12) and the first displacement sensor 702, first
Elevating drive mechanism is connected by second shaft coupling with the second motor 701, and the first elevating drive mechanism is also connected with x-ray source 1,
The first lifting transmission mechanism is driven to drive x-ray source 1 vertically to move up and down by the second motor 701.X-ray source 1 is logical
Cross sleeve 12 to be fixed on pedestal 13, radiographic source 1 is set predeterminated position by mobile foundation 13, you can to realize radiographic source 1
Face detector 3 and objective table 5.
As shown in fig. 6, it is objective table rotation device that the 3rd telecontrol equipment 8 is provided with objective table 5, the objective table
Rotation device includes the 3rd motor 801, transmission mechanism and the second rotary encoder 802, and the 3rd motor 801 passes through the 3rd
Axis device is connected with transmission mechanism, and transmission mechanism is also connected with objective table 5, passes through 801 drive transmission device of the 3rd motor band dynamic load
Thing platform is rotated by 360 °.It is objective table linear motion device that the 4th telecontrol equipment 9 is provided with objective table 5, the objective table straight line
Telecontrol equipment includes the 4th motor 901, the second elevating drive mechanism 903, limit switch 18 and second displacement sensor 902, the
Two elevating drive mechanisms 903 are connected by the 4th shaft coupling with the 4th motor 901, and the second elevating drive mechanism 903 is gone back and loading
Platform 5 connects, and drives the second elevating drive mechanism 903 vertically to be moved up and down with dynamic object stage 5 by the 4th motor 901；
Limit switch 18 is separately positioned on the extreme position of the second elevating drive mechanism 903, and limit switch 18 can use optoelectronic switch,
Optoelectronic switch can be connected with master control set 4, when the position of the second elevating drive mechanism 903 movement reaches extreme lower position or highest
The 4th motor 901 will be closed during the limit switch 18 of position.Objective table linear motion device and load can be made by master control set 4
Thing platform rotation device is realized and is synchronized with the movement, so as to form a kind of spiral movement locus.Second elevating drive mechanism 903 and
One elevating drive mechanism can use leading screw modular structure.Second place regulating device is also respectively provided with objective table 5
15 and the third place regulating device 16, second place regulating device 15 can use screw, load can be adjusted by adjusting screw
The levelness (adjustment objective table 5 to horizontal level or obliquity) of thing platform 5.The third place regulating device 16 can use pad
Plate, when objective table linear motion device can not meet to make testee 2 with 1 sustained height of x-ray source, passes through different size
Backing plate can further aid in the height of adjustment testee 2 so that testee 2 is highly consistent with x-ray source 1.Carrying
Thing platform bottom is provided with sliding block 17, which is installed on guide rail 11 so that and objective table is moved along guide rail 11, so that
Adjust SOD (the distance between x-ray source 1 to testee) value.
In computer dislocation scanning and imaging system test platform provided by the present invention, detector 3 can be that tablet is visited
Survey device, curved detector (as shown in Figure 7) etc..The image projected to from x-ray source 1 on detector 3 is received by detector 3
Information, and the image information received is changed into the view data that processing unit 20 can receive, and transmitted by master control set 4
To processing unit 20, processing unit 20 is handled after receiving the view data, and most complete image is at last
It is existing, facilitate staff specifically to be analyzed according to shown image.Wherein, processing unit 20 can use computer real
It is existing, by installing the image processing software to match from different detectors on computers, realize the picture number to being received
Presented on the computer screen according to being handled, and by complete image.Image processing software is existing mature technology, herein not
Repeat again.
In one embodiment of the invention, by taking curved detector as an example, as shown in fig. 7, curved detector includes installation
Stent 302, signal-processing board 303, signal transmission plate 304 and several sizes it is identical rectangular detector detection plate 301 form.
The inner headed face of mounting bracket 302 is the polygonal profile being fitted to by several facets, and detector detection plate 301 is installed one by one
On the facet, also, detector detection plate 301 is connected with signal-processing board 303, signal-processing board 303 and signal transmission
Plate 304 connects, and signal transmission plate 304 is connected with master control set 4.Since detector photosurface is by several detectors detection plate
301 are along the circumferential direction spliced, and splicing gap is small enough to that detector photosurface approximate simulation cambered surface can be made, and arc is visited
There is one layer of photosensitive material in the outer surface for surveying device, and photosensitive material periphery will also install one layer of thin carbon fiber board of arc and reach lucifuge mesh
's.The X-ray beam of reception can be converted into by the photosensitive material of curved detector outer surface by visible ray, and by signal
After reason plate 303 is converted into digital signal, it is transferred to by signal transmission plate 304 and master control set 4 at processing unit 20
Reason, so as to reconstruct the image for meeting a variety of imaging demands.
As shown in fig. 7, the first position regulating device 10 set in curved detector can use different specification size
Bearing, can be realized by bearing makes curved detector be in different height, and the bearing moves along a straight line with x-ray source
Device is used cooperatively, and after realization makes the center of center line alignment detector 3 of x-ray source 1, is had not between horizontal line
Same angle, which can be depending on actual test demand.Rest base is provided with sliding block 19, which is installed
On guide rail 11 so that curved detector is moved along guide rail 11, so as to adjust sid value, (x-ray source 1 is between detector 3
Distance) value.First position regulating device 10 can also use the 5th motor, the 3rd elevating drive mechanism and triple motion sensing
Device, the 3rd elevating drive mechanism are connected by the 5th shaft coupling with the 5th motor, and the 3rd elevating drive mechanism also connects with detector 3
Connect, drive the 3rd lifting transmission mechanism to drive detector 3 vertically to move up and down by the 5th motor；The first position tune
Regulating device 10 is used cooperatively with x-ray source linear motion device, realizes the center for the center line alignment detector 3 for making x-ray source 1
Behind position, there is different angles between horizontal line, which can be depending on actual test demand.It is also possible to will
3rd elevating drive mechanism is arranged in sleeve, sets sliding block 19 in the bottom of sleeve, the function of sliding block 19 is same as above.
In one embodiment of the invention, master control set 4 is the master controller using fpga chip as core, the main control
Device 4 has very high real-time and antijamming capability, so as to improve the reliability integrally controlled.As shown in figure 4, master controller
4 are provided with the first motion controller 401, the second motion controller 402, the 3rd motion controller 403, the 4th motion controller
404.Wherein, the first motion controller 401 is x-ray source elevating movement controller, and the second motion controller 402 is x-ray source
Move along a straight line controller, and the 3rd motion controller 403 is objective table rotary motion controller, and the 4th motion controller 404 is load
Thing platform linear motion controller.First motion controller 401 is connected with the first motor 601, the second motion controller 402 and second
Motor 701 connects, and the 3rd motion controller 403 is connected with the 3rd motor 801, the 4th motion controller 404 and the 4th motor 901
Connection.Master controller 4 respectively with x-ray source 1, detector 3, computer, the first rotary encoder 602, the first displacement sensor
702nd, the second rotary encoder 802 and second displacement sensor 902 connect.When first position regulating device 10 is using the 5th electricity
, it is necessary to be set on the basis of the control principle of above-mentioned master controller 4 when machine, the 3rd elevating drive mechanism and triple motion sensor
5th motion controller, the 5th motion controller are connected with the 5th motor, and master controller 4 is also connected with triple motion sensor.
The position of x-ray source 1 can be fed back in time by master controller 4 by the first rotary encoder 602, the first displacement sensor 702,
Control corresponding motor to work respectively by master controller 4, x-ray source 1 is moved to predeterminated position.Pass through second
The position of objective table 5 can be fed back to master controller 4 in time by displacement sensor 902, be controlled respectively by master controller 4 corresponding
Motor works, and objective table 5 is moved to predeterminated position.Can be by the position of objective table 5 by the second rotary encoder 802
Put and feed back to master controller 4 in time, control corresponding motor to drive article carrying platform 5 to rotate by master controller 4.Pass through the 3rd
The position of detector 3 can be fed back to master controller 4 in time by displacement sensor, control corresponding motor to carry out by master controller 4
Work, enables detector 3 to move to predeterminated position.Master controller 4 can also control degree of transmission and the exposure of x-ray source 1
Sequential.Since master controller 4 is connected with detector 3, so, master controller 4 can also control the work schedule of detector 3.Root
According to actual demand, realize testee 2 just by inputting in the operation interface of computer and adjusting the kinematic parameter of each motor
Under the conditions of ray (behind the center of the center line alignment detector 3 of x-ray source 1, the angle between horizontal line is 0 °)
Axis is swept sweeps faultage image with spiral, and testee 2 can also be realized in oblique ray (the center line alignment detector 3 of x-ray source 1
Center after, angle between horizontal line is more than 0 °) under the conditions of axis sweep and sweep faultage image with spiral, so as to fulfill
The image for meeting a variety of imaging demands is reconstructed in the case of same x-ray source 1 and detector 3；It can also realize and be penetrated in same X
In the case of line source 1, replace different detectors 3 and reconstruct the image for meeting a variety of imaging demands；Can also be in same detection
In the case of device 3, replace different x-ray sources 1 and reconstruct the image for meeting a variety of imaging demands；Different X can also be replaced
Radiographic source 1 and detector 3, reconstruct the image for meeting a variety of imaging demands.
Computer dislocation scanning and imaging system test platform provided by the present invention is mainly used for simulating quiescent imaging, but not
It is limited to simulate such a imaging mode, can also be more by the test platform simulated implementation of the computer dislocation scanning and imaging system
Imaging mode.Below in a manner of quiescent imaging exemplified by, and be directed to same x-ray source 1 and detector 3, break to this computer
The test method of the test platform of layer scanning imaging system describes in detail.
As shown in figure 8, the test method of computer dislocation scanning and imaging system test platform provided by the present invention includes
Following steps：
Step S1：According to the faultage image type of the testee of required acquisition, sid value and SOD values are adjusted；
Due to the faultage image type including 1 alignment detector 3 of x-ray source of testee 1 center and with level
The 2 a certain section (axis sweeps function) of testee or continuous multiple sections (spiral to sweep function) that angle between line obtains when being 0 °
Faultage image, and angle behind the center of 1 alignment detector 3 of x-ray source between horizontal line is more than what is obtained at 0 °
2 a certain section (axis sweeps function) of testee or the faultage image of continuous multiple sections (spiral to sweep function).Testee 2 is different
The faultage image of species, may correspond to different sid values and SOD values, the testee 2 that therefore, it is necessary to be obtained needed for
Faultage image type, along 11 moving stage 5 of guide rail and detector 3, realizes adjustment SID (between x-ray source 1 and detector 3
Distance) value and SOD (the distance between x-ray source 1 and testee 2) value.
Step S2：According to sid value and SOD values, the center of the center line alignment detector of x-ray source is adjusted；
Center and the angle between horizontal line to make 1 alignment detector 3 of x-ray source are 0 °, can located
The kinematic parameter of second motor 701 and the first motor 601 is set on reason device 20, and is controlled by the second movement of master control set 4
402 and first motion controller 401 of device processed corresponds to the second motor 701 of driving and the first motor 601 by the center line of x-ray source 1
It is adjusted to the center of alignment detector 3.Therefore, under actual demand, sid value and SOD values that can be according to different groups, be adjusted
The center of the center line alignment detector of whole x-ray source.
As shown in figure 9, at the center of the center alignment testee 2 of detector 3, and x-ray source 1 is located at detector
3 outer shroud, the angle behind the center to make 1 alignment detector 3 of x-ray source between horizontal line is more than 0 °, sharp first
Detector 3 is reached predetermined altitude with the first position regulating device 10 of detector 3, then set second in processing unit 20
The kinematic parameter of 701 and first motor 601 of motor, the second motor is driven by the second motion controller 402 of master control set 4
X-ray source 1 is adjusted to suitable position by 701, and the first motor is driven finally by the first motion controller 401 of master control set 4
601 make x-ray source 1 turn an angle, and ensure that the center line of x-ray source 1 is capable of the center of alignment detector 3, penetrate X
Angle behind the center of 1 alignment detector 3 of line source between horizontal line is more than 0 ° (as shown in Figure 10).Therefore, Ke Yi
In the case of same group of sid value and SOD values, have after adjusting the center of 1 alignment detector 3 of x-ray source between horizontal line
Different angles.
Step S3：According to the faultage image type of the testee of required acquisition, testee sweeps on adjustment objective table
Retouch position；
When the axis for needing to obtain testee 2 sweeps faultage image (including the axis of anode rays and oblique ray sweeps faultage image)
When, the kinematic parameter of the 4th motor 901, and the 4th motion control for passing through master control set 4 can be set in processing unit 20
Device 404 drives the 4th motor 901 by the sectional layer alignment detector 3 and X-ray of scanning required for testee 2 on objective table 5
Behind the center in source 1, the 4th motor 901 is closed；
When need to obtain testee 2 spiral sweep faultage image (including anode rays and the spiral of oblique ray sweep tomograph
Picture) when, the kinematic parameter of the 4th motor 901 can be set in processing unit 20, pass through the 4th motion control of master control set 4
Device 404 drives the 4th motor 901 by the starting point of certain segment distance (having certain thickness tomography) of scanning required for testee 2
It is adjusted to and 3 sustained height of detector.Certain segment distance of scanning is adjusted so as to by the preceding collimation of x-ray source 1 required for testee 2
Arrive.
Step S4：By starting exposure after the exposure parameter of computer settings x-ray source, while control the fortune on objective table
Dynamic device action, the axis for obtaining testee sweep faultage image and sweep faultage image with spiral.
When the axis for needing to obtain testee 2 sweeps faultage image (including the axis of anode rays and oblique ray sweeps faultage image)
When, exposed by starting after the exposure parameter of computer settings x-ray source 1, the 3rd motor 801 is set in processing unit 20
Kinematic parameter, while drive the 3rd motor 801 to rotate testee 2 by the 3rd motion controller 403 of master control set 4
360 °, detector 3 will receive several optical signals of different angle in the range of 360 ° from testee 2, and pass through one
The a certain section of testee 2 is obtained after image series processing (being handled with 3 corresponding image processing software of detector)
Faultage image.
When need to obtain testee 2 spiral sweep faultage image (including anode rays and the spiral of oblique ray sweep tomograph
Picture) when, exposed by starting after the exposure parameter of computer settings x-ray source 1, the 3rd motor is set in processing unit 20
801 and the 4th motor 901 kinematic parameter, pass through the 3rd motion controller 403 of master control set 4 and the 4th motion controller
404 synchronously drive the 3rd motor 801 and the 4th motor 901 respectively, make testee 2 also synchronous along vertical while being rotated by 360 °
Direction is moved upwards, and detector 3 believes some light received in the range of 360 ° from the continuous multiple sections of testee 2
Number, and obtain several tomographs after a series of images handles (being handled with 3 corresponding image processing software of detector)
Picture.To be swept compared to axis, spiral several faultage images swept in energy single pass testee a distance, sweep time is shorter,
Dose of radiation is lower, and 3-D view can also be formed by processing.
Computed tomograph scanner system test platform provided by the present invention can switch different x-ray source and detector
Combination, by adjusting the distance of the distance of x-ray source and detector, testee and detector, and passes through test platform spirit
The kinematic parameter living for configuring each telecontrol equipment, under the cooperation of first position regulating device, adjusts in x-ray source alignment detector
Angle behind heart position between horizontal line, it is possible to achieve axis of the testee under the conditions of anode rays and oblique ray sweep with it is spiral
Faultage image is swept, the test to different x-ray source and combinations of detectors is completed, reconstructs the figure for meeting a variety of imaging demands
Picture.
The test platform provided by the present invention for computed tomograph scanner system and test method are carried out above
Detailed description.For those of ordinary skill in the art, it is done on the premise of without departing substantially from true spirit
Any obvious change, will all belong to the protection domain of patent right of the present invention.
Claims (10)
1. a kind of test platform for computed tomograph scanner system, it is characterised in that including master control set, x-ray source, load
Thing platform, detector and processing unit；The first telecontrol equipment, the second telecontrol equipment, the objective table are provided with the x-ray source
On be provided with the 3rd telecontrol equipment, the 4th telecontrol equipment, first position regulating device is provided with the detector, the X is penetrated
Line source, the detector, the processing unit, first telecontrol equipment, second telecontrol equipment, the 3rd sportswear
Put, the 4th telecontrol equipment is connected with the master control set respectively；The objective table, the detector are separately mounted to work
On the guide rail of platform, it is respectively used to adjust distance and the radiographic source and testee between the x-ray source and the detector
The distance between；
According to the different x-ray sources and the combinations of detectors, the kinematic parameter of corresponding telecontrol equipment is configured, realizes institute
Axis of the testee respectively under the conditions of anode rays and oblique ray is stated to sweep faultage image and spiral sweep faultage image.
2. it is used for the test platform of computed tomograph scanner system as claimed in claim 1, it is characterised in that：
First telecontrol equipment includes the first motor, pitching rotary and the first rotary encoder, and the pitching rotary passes through
One shaft coupling is connected with first motor, and the pitching rotary is connected with the x-ray source；
Second telecontrol equipment includes the second motor, the first elevating drive mechanism and the first displacement sensor, described first liter
Drop transmission mechanism is connected by second shaft coupling with second motor, first elevating drive mechanism and the x-ray source
Connection；
3rd telecontrol equipment includes the 3rd motor, transmission mechanism and the second rotary encoder, and the 3rd motor passes through
Three shaft couplings are connected with the transmission mechanism, and the transmission mechanism is connected with the objective table, are driven by the 3rd motor
The transmission mechanism drives the objective table rotation；
4th telecontrol equipment includes the 4th motor, the second elevating drive mechanism and second displacement sensor, described second liter
Drop transmission mechanism is connected by the 4th shaft coupling with the 4th motor, and second elevating drive mechanism connects with the objective table
Connect.
3. it is used for the test platform of computed tomograph scanner system as claimed in claim 2, it is characterised in that：
Second place regulating device and the third place regulating device, the second place tune are also respectively provided with the objective table
Regulating device uses screw, and the levelness of the objective table is adjusted by adjusting the screw.
4. it is used for the test platform of computed tomograph scanner system as claimed in claim 3, it is characterised in that：
The third place regulating device uses backing plate, and the backing plate is used to coordinate the 4th telecontrol equipment to make the measured object
Body and the x-ray source sustained height.
5. it is used for the test platform of computed tomograph scanner system as claimed in claim 2, it is characterised in that：
The master control set is master controller, and the master controller is provided with the first motion controller, the second motion controller,
Three motion controllers, the 4th motion controller, first motion controller are connected with first motor, second movement
Controller is connected with second motor, and the 3rd motion controller is connected with the 3rd motor, the 4th movement control
Device processed is connected with the 4th motor；Master controller respectively with the x-ray source, the detector, processing unit, described first
Rotary encoder, first displacement sensor, second rotary encoder and second displacement sensor connection.
A kind of 6. test method for computed tomograph scanner system, based on the survey described in any one in Claims 1 to 5
Try platform to realize, it is characterised in that include the following steps：
Step S1：According to the faultage image type of the testee of required acquisition, sid value and SOD values are adjusted；
Step S2：According to sid value and SOD values, the center of the center line alignment detector of x-ray source is adjusted；
Step S3：According to the faultage image type of the testee of required acquisition, the scanning position of testee on objective table is adjusted
Put；
Step S4：Start exposure after setting the exposure parameter of x-ray source, while control the telecontrol equipment on objective table to act, obtain
Take the axis of testee to sweep faultage image and sweep faultage image with spiral.
7. it is used for the test method of computed tomograph scanner system as claimed in claim 6, it is characterised in that：
In step S1, by along guide rail moving stage and detector, adjusting sid value and SOD values.
8. it is used for the test method of computed tomograph scanner system as claimed in claim 6, it is characterised in that：
In step S2, the kinematic parameter of the second motor and the first motor is set in processing unit, passes through the second motion controller
Driving corresponding with the first motion controller second motor and first motor arrive the adjusting of centerline of the x-ray source
The center of alignment detector, makes the x-ray source be directed at the center of the detector and the folder between horizontal line
Angle is 0 °；
The detector is reached predetermined altitude by first position regulating device, described second is set in the processing unit
The kinematic parameter of motor and first motor, then drives second motor by described in by second motion controller
X-ray source is adjusted to suitable position, drives first motor to make the x-ray source finally by first motion controller
Turn an angle, the angle that the x-ray source is aligned behind the center of the detector between horizontal line is more than 0 °.
9. it is used for the test method of computed tomograph scanner system as claimed in claim 6, it is characterised in that：
In step S3, when needing the axis for obtaining the testee to sweep faultage image, the quilt on the objective table is adjusted
The process of scan position for surveying object is：The kinematic parameter of 4th motor is set in processing unit, passes through the 4th motion control
Device drives the sectional layer alignment detector and X that the 4th motor will scan required for the testee on the objective table
Behind the center of radiographic source, the 4th motor is closed；
When need to obtain the testee it is spiral sweep faultage image when, adjust the testee on the objective table
The process of scan position is：The kinematic parameter of 4th motor is set in the processing unit, passes through the 4th motion control
Device drives the 4th motor to be adjusted to the starting point of certain segment distance scanned required for the testee and the detector
Sustained height.
10. it is used for the test method of computed tomograph scanner system as claimed in claim 6, it is characterised in that：
In step S4, the kinematic parameter of the 3rd motor is set in processing unit, described the is driven by the 3rd motion controller
Three motors rotate the testee, and detector will receive different angle in the range of 360 ° from the testee
Several optical signals, and the axis that the testee is obtained after being handled by the processing unit sweeps faultage image；
The kinematic parameter of 3rd motor and the 4th motor is set in the processing unit, passes through the 3rd motion control
Device and the 4th motion controller difference synchronous driving the 3rd motor and the 4th motor, make the testee rotating
Also synchronous vertically movement upwards at the same time, the detector will be received from the continuous multiple sections of the testee
Some optical signals in the range of 360 °, and obtain the spiral of the testee after processing unit is handled and sweep faultage image.
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