CN102235984B - Triggering device, scanning system and triggering and scanning method for industrial computed tomography (CT) - Google Patents
Triggering device, scanning system and triggering and scanning method for industrial computed tomography (CT) Download PDFInfo
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Abstract
The invention discloses a triggering device, a scanning system and a triggering and scanning method for industrial computed tomography (CT). The triggering device comprises a group of position sensors, a storage module, a control module and an enabling module, wherein at least one position sensor corresponding to the degree of freedom (DOF) is arranged at the transmission tail end of the moving DOF in scanning; the storage module is used for storing a group of triggering conditions, wherein one triggering condition is all or partial output quantity of the group of position sensors; the control module is used for comparing the all or partial output quantity in the group of position sensors wit the triggering conditions; when the output quantity is matched with at least one triggering condition, the enabling module is started; and the enabling module is used for sending a triggering signal during starting each time. Through the triggering device, the scanning process is not affected by the transmission error and the movement velocity of a mechanical device, and the accuracy of the rebuilt three-dimensional image is improved.
Description
Technical field
The present invention relates to industry CT field of non destructive testing, relate in particular to a kind of flip flop equipment, scanning system and triggering, scan method of industry CT.
Background technology
Industry CT is the abbreviation of industrial computer tomography technology.Compare with traditional tomography technology, industry CT can obtain checked object at the fault imaging of a plurality of degree of freedom.In the scanography that same object is carried out, need repeatedly to convert tripleplane's image that scan mode obtains checked object, in this case, for the projecting image data under various scan modes necessary clear and definite its each degree of freedom position or angle, the 3-dimensional image of guarantee object is rebuilt.Consider the journey error of mechanism system, the driving error of the velocity variations of mechanism system start-stop process and machinery, the scanning process triggering by constant duration is inhomogeneous, the projecting image data obtaining can bring the error of uncertain spatial resolution in image reconstruction, cannot proofread and correct.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of flip flop equipment, scanning system and triggering, scan method of industry CT, can make scanning process not be subject to the impact of driving error and the movement velocity of mechanical hook-up, improves the accuracy of the 3-dimensional image of rebuilding.
In order to address the above problem, the invention provides a kind of flip flop equipment of industry CT, comprising:
One group of position transducer; In scanning, will in the driven end of the degree of freedom of motion, at least respectively install one corresponding to the position transducer of this degree of freedom;
Memory module, for preserving one group of trigger condition; Wherein, a described trigger condition is all or part of output quantity in described one group of position transducer;
Control module, for comparing all or part of output quantity and each trigger condition of described one group of position transducer; When mating with at least one trigger condition, described output quantity starts described enable module;
Enable module, for send trigger pip at every turn when starting.
Further, described flip flop equipment also comprises:
First timer and second timer; The timing of described first timer equals described radiogenic excitation time delay, and the timing of described second timer equals the signal processing delay time of described signal acquisition and processing apparatus;
Described trigger pip comprises for triggering described radiogenic the first trigger pip and for triggering the second trigger pip of described signal acquisition and processing apparatus;
Described enable module first starts described first, second timer after each startup, when described first timer produces described the first trigger pip then, when described second timer produces described the second trigger pip then.
Further, described flip flop equipment also comprises:
The 3rd timer;
Described control module also for restarting described the 3rd timer, when described the 3rd timer starts described enable module then when described output quantity is mated with at least one trigger condition.
Further, described control module compares output quantity all or part of in described one group of position transducer and each trigger condition specifically and refers to:
Described control module is preserved in scanning in advance by the degree of freedom of motion, in the output quantity of described one group of position transducer, selects the output quantity of the position transducer corresponding with preserved degree of freedom, compares with corresponding output quantity in described each trigger condition.
Further, described control module is also for the output quantity of position transducer corresponding to the degree of freedom of not moving before scanning being saved as to the position initial value of this degree of freedom, as the output quantity of position transducer corresponding to this degree of freedom in this scanning.
The present invention also provides a kind of scanning system of industry CT, comprising:
For produce the radiographic source of ray when receiving trigger pip;
For when receiving trigger pip, according to ray, penetrate the signal acquisition and processing apparatus that decay obtains image information and preserves;
Flip flop equipment, comprising:
One group of position transducer; In scanning, will in the driven end of the degree of freedom of motion, at least respectively install one corresponding to the position transducer of this degree of freedom;
Memory module, for preserving one group of trigger condition; Wherein, a described trigger condition is all or part of output quantity in described one group of position transducer;
Control module, for comparing all or part of output quantity and each trigger condition of described one group of position transducer; When mating with at least one trigger condition, described output quantity starts described enable module;
Enable module, for send respectively described trigger pip to described radiographic source and described signal acquisition and processing apparatus when starting at every turn, by described, send to described signal acquisition and processing apparatus with the output quantity of at least one trigger condition coupling together with described trigger pip;
When described signal acquisition and processing apparatus is preserved image information, preserve together with the output quantity of receiving when this receives described trigger pip.
The present invention also provides a kind of triggering method of industry CT, comprising:
One group of position transducer is installed, in scanning, will in the driven end of the degree of freedom of motion, be at least respectively installed one corresponding to the position transducer of this degree of freedom;
Preserve one group of trigger condition; Wherein, a described trigger condition is all or part of output quantity in described one group of position transducer;
Output quantity and each trigger condition all or part of in described one group of position transducer are compared; When described output quantity is mated with at least one trigger condition, produce trigger pip.
Further, described trigger pip comprises for triggering described radiogenic the first trigger pip and for triggering the second trigger pip of described signal acquisition and processing apparatus;
The step of described generation trigger pip specifically comprises:
After waiting for described first schedule time, produce described the first trigger pip, produce described the second trigger pip after waiting for described second schedule time; The length of described first schedule time equals described radiogenic excitation time delay, and the length of described second schedule time equals the signal processing delay time of described signal acquisition and processing apparatus.
Further, described triggering method also comprises:
When mating with at least one trigger condition, described output quantity restarts timing; When the time equals described the 3rd schedule time, carry out the step of described generation trigger pip.
Further, the described step that output quantity all or part of in described one group of position transducer and each trigger condition are compared specifically comprises:
In preservation scanning in advance, by the degree of freedom of motion, in the output quantity of described one group of position transducer, select the output quantity of the position transducer corresponding with preserved degree of freedom, compare with corresponding output quantity in described each trigger condition.
Further, described triggering method also comprises:
The current output quantity of position transducer corresponding to the degree of freedom of not moving before scanning is saved as to the position initial value of this degree of freedom, as the output quantity of position transducer corresponding to this degree of freedom in this scanning.
The present invention also provides a kind of scan method of industry CT, comprising:
One group of position transducer is installed, in scanning, will in the driven end of the degree of freedom of motion, be at least respectively installed one corresponding to the position transducer of this degree of freedom;
Preserve one group of trigger condition; Wherein, a described trigger condition is all or part of output quantity in described one group of position transducer;
Output quantity and each trigger condition all or part of in described one group of position transducer are compared; When described output quantity is mated with at least one trigger condition, produce trigger pip;
According to described trigger pip, produce ray, and preserve ray and penetrate decay and obtain image information and described output quantity of mating with at least one trigger condition.
Technical scheme of the present invention can be controlled checked object and scan in a plurality of degree of freedom, obtain the image of checked object, can not rely on the multiplication relationship in movement velocity and the time interval to determine that checked object is in position or the angle of certain specific degree of freedom, the projected image that its each trigger sweep record obtains has unique locus, be not subject to the impact of driving error and the movement velocity of mechanical hook-up, guarantee that the 3-dimensional image of scanned object can accurately be rebuild.
Accompanying drawing explanation
Fig. 1 is the schematic block diagram of the flip flop equipment of industry CT in embodiment tri-;
Fig. 2 is the schematic block diagram of the example of the scanning system of industry CT in embodiment tri-.
Embodiment
Below in conjunction with drawings and Examples, technical scheme of the present invention is described in detail.
It should be noted that, if do not conflicted, each feature in the embodiment of the present invention and embodiment can mutually combine, all within protection scope of the present invention.In addition, in the step shown in the process flow diagram of accompanying drawing, can in the computer system such as one group of computer executable instructions, carry out, and, although there is shown logical order in flow process, but in some cases, can carry out shown or described step with the order being different from herein.
Embodiment mono-, and a kind of flip flop equipment of industry CT as shown in Figure 1, comprising:
One group of position transducer; In scanning, will in the driven end of the degree of freedom of motion, at least respectively install one corresponding to the position transducer of this degree of freedom;
Memory module, for preserving one group of trigger condition; Wherein, a described trigger condition is all or part of output quantity in described one group of position transducer;
Control module, for comparing all or part of output quantity and each trigger condition of described one group of position transducer; When mating with at least one trigger condition, described output quantity starts described enable module;
Enable module, for send trigger pip at every turn when starting.
In the present embodiment, described driven end refers to last the link used unit that transmits action; Described degree of freedom comprises translational degree of freedom and rotational freedom.
If only carry out the motion in one degree of freedom during scanning, do not get rid of one group of described position transducer and only include a position transducer.
The flip flop equipment of the present embodiment is applicable to have the industry CT equipment of controllable radiographic source and signal acquisition and processing apparatus, and described radiographic source and signal acquisition and processing apparatus are worked when receiving described trigger pip.
In the present embodiment, described one group of position transducer is arranged in each driven end of physical construction of described scan table, each position that physical construction reaches is like this corresponding to the output signal of one group of position transducer.This position sensor output signal only produces in specific locus, is not subject to the impact of mechanical hook-up movement velocity and driving error, has eliminated the inconsistent error of bringing of mechanical hook-up movement velocity.
In practical application, can, according to different sweep objects and scanning requirement, set described trigger condition.
In the present embodiment, corresponding each locus of described one group of trigger condition (hereinafter also referred to as trigger position) needs not be uniform, can produce trigger pip according to the optional position of setting, for example at radiogenic marginal position, considerably less trigger position can be set, the trigger position of very dense is set in radiogenic center, also can forbids scanning at some sensitive position that is scanned object.
In the present embodiment, described flip flop equipment can also comprise timer;
Described enable module first starts described timer after each startup, and this timer then sends described trigger pip afterwards; When trigger pip can start, just produce, in the time of also can sending, produce again.
During practical application, can be also described control module when described output quantity is mated with a trigger condition, first start this timer, when this timer starts described enable module then.
Described timer can comprise first timer and second timer; The timing of described first timer equals described radiogenic excitation time delay, and the timing of described second timer equals the signal processing delay time of described signal acquisition and processing apparatus.
Described trigger pip comprises for triggering described radiogenic the first trigger pip and for triggering the second trigger pip of described signal acquisition and processing apparatus.
Described enable module first starts described first, second timer after each startup, when described first timer produces described the first trigger pip then, when described second timer produces described the second trigger pip then.
Can come independently to control from finding that certain position meets trigger condition (on this position time by the timing of first, second timer is set like this, the output quantity of all or part of position transducer is mated with at least one trigger condition) the moment, to radiographic source and signal acquisition and processing apparatus, receive the time delay of described trigger pip, make described radiographic source and the signal acquisition and processing apparatus can be because of not different from the distance of this flip flop equipment, or have the problems such as delay and can not synchronous working.
In the present embodiment, described flip flop equipment can also comprise one the 3rd timer.
In an embodiment of the present embodiment, described control module can also be for whenever described the 3rd timer then starts described enable module afterwards, and restart described the 3rd timer.
In this embodiment, described flip flop equipment is that two kinds of triggering modes are parallel, not only can work as when position meets trigger condition and trigger, can also clocked flip.
In the another kind of embodiment of the present embodiment, described control module can also be for restarting described the 3rd timer, when described the 3rd timer starts described enable module then when described output quantity is mated with at least one trigger condition.
In this embodiment, described flip flop equipment can switch adaptively between " time " and " position " these two kinds of triggering modes, when within a period of time, (length is the timing of described the 3rd timer) all do not have position to meet trigger condition, trigger; If there is position to meet trigger condition, restart regularly.
In the present embodiment, described control module compares output quantity all or part of in described one group of position transducer and each trigger condition specifically and can refer to:
Described control module is preserved in scanning in advance by the degree of freedom of motion, in the output quantity of described one group of position transducer, selects the output quantity of the position transducer corresponding with preserved degree of freedom, compares with corresponding output quantity in described each trigger condition.
In the present embodiment, described control module can receive the output quantity of whole position transducers, then therefrom selects; Also can receive only the output quantity of the position transducer corresponding with preserved degree of freedom.
Such as trigger condition comprises the output quantity of the position transducer that corresponds respectively to X, Y, Z axis, suppose only to carry out the motion in X-direction, now, only need the output quantity of the judgement position transducer corresponding with X-axis whether to mate with trigger condition, and without the output quantity of taking notice of the position transducer corresponding with other degree of freedom.
In the present embodiment, described control module can also be for the current output quantity of position transducer corresponding to the degree of freedom of not moving before scanning being saved as to the position initial value of this degree of freedom, as the output quantity of position transducer corresponding to this degree of freedom in this scanning; The position transducer output quantity corresponding due to the degree of freedom of not moving can not change, therefore can be with described position initial value when reconstruction image the output quantity as position transducer corresponding to this degree of freedom; So,, in carrying out the motion scanning process of specific degree of freedom, the position skew and the error that in the degree of freedom of not moving, produce also can be corrected.
Embodiment bis-, and a kind of triggering method of industry CT, comprising:
One group of position transducer is installed, in scanning, will in the driven end of the degree of freedom of motion, be at least respectively installed one corresponding to the position transducer of this degree of freedom;
Preserve one group of trigger condition; Wherein, a described trigger condition is all or part of output quantity in described one group of position transducer;
Output quantity and each trigger condition all or part of in described one group of position transducer are compared; When described output quantity is mated with at least one trigger condition, produce trigger pip.
In the present embodiment, described driven end refers to last the link used unit that transmits action; Described degree of freedom comprises translational degree of freedom and rotational freedom.
In the present embodiment, the step of described generation trigger pip specifically comprises:
Wait for after the schedule time, produce described trigger pip.
The described schedule time can comprise first schedule time and second schedule time; The length of described first schedule time equals described radiogenic excitation time delay, and the length of described second schedule time equals the signal processing delay time of described signal acquisition and processing apparatus.
Described trigger pip comprises for triggering described radiogenic the first trigger pip and for triggering the second trigger pip of described signal acquisition and processing apparatus.
The step of described generation trigger pip specifically can comprise:
After waiting for described first schedule time, produce described the first trigger pip, produce described the second trigger pip after waiting for described second schedule time.
In an embodiment of the present embodiment, described triggering method can also comprise:
Every one the 3rd schedule time, carry out once the step of described generation trigger pip.
In this embodiment, described flip flop equipment is that two kinds of triggering modes are parallel, not only can work as when position meets trigger condition and trigger, can also clocked flip.
In the another kind of embodiment of the present embodiment, described triggering method can also comprise:
When mating with at least one trigger condition, described output quantity restarts timing; When the time equals described the 3rd schedule time, carry out the step of described generation trigger pip.
In this embodiment, described flip flop equipment can switch adaptively between " time " and " position " these two kinds of triggering modes, when within a period of time, (length is described the 3rd schedule time) all has position to meet trigger condition, does not trigger; If there is position to meet trigger condition, restart timing.
In the present embodiment, the described step that output quantity all or part of in described one group of position transducer and each trigger condition are compared specifically can comprise:
In preservation scanning in advance, by the degree of freedom of motion, in the output quantity of described one group of position transducer, select the output quantity of the position transducer corresponding with preserved degree of freedom, compare with corresponding output quantity in described each trigger condition.
Can receive the output quantity of whole position transducers, then therefrom select; Also can receive only the output quantity of the position transducer corresponding with preserved degree of freedom.
In the present embodiment, described triggering method can also comprise:
The current output quantity of position transducer corresponding to the degree of freedom of not moving before scanning is saved as to the position initial value of this degree of freedom, as the output quantity of position transducer corresponding to this degree of freedom in this scanning; When rebuilding image, in each scan image, can be with described position initial value the output quantity as position transducer corresponding to this degree of freedom; So,, in carrying out the motion scanning process of specific degree of freedom, the position skew and the error that in the degree of freedom of not moving, produce also can be corrected.
Other realizes details can be with described in embodiment mono-.
Embodiment tri-, and a kind of scanning system of industry CT, comprising:
For produce the radiographic source of ray when receiving trigger pip;
For when receiving trigger pip, according to ray, penetrate the signal acquisition and processing apparatus that decay obtains image information and preserves;
Flip flop equipment, comprising:
One group of position transducer; In scanning, will in the driven end of the degree of freedom of motion, at least respectively install one corresponding to the position transducer of this degree of freedom;
Memory module, for preserving one group of trigger condition; Wherein, a described trigger condition is all or part of output quantity in described one group of position transducer;
Control module, for comparing all or part of output quantity and each trigger condition of described one group of position transducer; When mating with at least one trigger condition, described output quantity starts described enable module;
Enable module, for send respectively described trigger pip to described radiographic source and described signal acquisition and processing apparatus when starting at every turn, by described, send to described signal acquisition and processing apparatus with the output quantity of at least one trigger condition coupling together with described trigger pip;
When described signal acquisition and processing apparatus is preserved image information, preserve together with the output quantity of receiving when this receives described trigger pip.
In the present embodiment, described driven end refers to last the link used unit that transmits action; Described degree of freedom comprises translational degree of freedom and rotational freedom.
In the present embodiment, other of described flip flop equipment realized details can be with shown in embodiment mono-.
In the present embodiment, described radiographic source produces ray and refers to according to predefined scan pattern generation ray when receiving trigger pip; Described scan pattern comprise produced ray power, hold time, sweep limit etc.
In this scanning system, radiographic source and signal acquisition and processing apparatus are subject to the control of flip flop equipment, and the trigger pip being produced by flip flop equipment is controlled radiographic source and signal acquisition and processing apparatus carries out the work of discontinuous.The position of radiographic source and signal acquisition and processing apparatus can be adjusted, but in scanning process, keeps immobilizing.The object being scanned can carry out the motion of a plurality of degree of freedom with respect to radiographic source and signal acquisition and processing apparatus, comprise rotatablely move, parallel moves with vertical.
In practical application, can, according to different sweep objects and scanning requirement, set described trigger condition and described scan pattern.
In the present embodiment, described one group of position transducer is arranged in each driven end of physical construction of described scan table, each position that physical construction reaches is like this corresponding to the output signal of one group of position transducer.This position sensor output signal only produces in specific locus, is not subject to the impact of mechanical hook-up movement velocity and driving error, has eliminated the inconsistent error of bringing of mechanical hook-up movement velocity.
As shown in Figure 2, be a concrete example of applying of the present embodiment, wherein, described radiographic source is the impulse type accelerator 1 of an external control; Described signal acquisition and processing apparatus 2 only just carries out a signals collecting and processing when trigger pip arrives.
Object to be scanned is placed on scan table 3, and the physical construction of scan table 3 (not shown in FIG.) can gated sweep platform 3 be rotated 21, parallel 22 and vertical mobile 23; In this example, position transducer is arranged on this scan table 3, in practical application, does not also get rid of and be arranged on object to be scanned.
In the rotatablely moving of described physical construction, parallel and vertical mobile driven end, fixedly mounted respectively first, second, and third position transducer, be respectively used to produce the output quantity 10,11,12 that is used to indicate the position in corresponding degree of freedom and send to flip flop equipment 4.It is the position transducer based on types such as optics, electricity or machineries that these position transducers can be, but not limited to, and one group of output quantity that these position transducers provide can unique locus of determining the object to be scanned of carrying on described scan table 3.
When scanning, described physical construction is determined direction of motion and the movement velocity of object to be scanned.Meanwhile, can, according to the direction of motion of this scan table 3, determine the current output quantity of the position transducer that output quantity can not change; Determine several trigger positions that will scan, and corresponding obtaining on this or these trigger position, one or more output quantities of the position transducer that output quantity can change (being hereinafter called ad-hoc location sensor), the one or more output quantity is combined with described current output quantity respectively, obtain one or more trigger conditions.
Due in motion process, some position transducer output quantities do not change, therefore can only corresponding output quantity in the output quantity of ad-hoc location sensor and trigger condition be compared, when consistent, just produce trigger pip, this trigger pip can generate respectively controls the first trigger pip 13 of radiographic source generation ray and the second trigger pip 14 that control signal acquisition processing device scans.
Flip flop equipment can independently be controlled from finding the moment of the ad-hoc location predefined certain trigger of sensing station information conforms position, the time delay of starting working to radiographic source and signal acquisition and processing apparatus, so as to meeting the signal processing delay of radiogenic excitation delay and signal acquisition and processing apparatus.The time delays of the Trig control signal of radiographic source and signal acquisition and processing apparatus is started to default to flip flop equipment before scanning in system.
Produce after trigger pip, flip flop equipment is recorded the output quantity of institute's position sensor this moment, and pass to described signal acquisition and processing apparatus by communication mode, together with by signal acquisition and processing apparatus, the image information of the output quantity of position transducer and this scanning being kept at.The scan image comprising in such scanning result and the locus that produces this scan image, in the time of reconstruction of three-dimensional projection, can determine angular coordinate and the planimetric coordinates of sweep object, signal acquisition and processing apparatus does not just need the image information that guarantees each scanning and to transmit according to sequencing record, when carrying out image reconstruction, can recover accurately according to the positional information of position transducer angular coordinate and the planimetric coordinates of its scan image.
Embodiment tetra-, and a kind of scan method of industry CT, comprising:
One group of position transducer is installed, in scanning, will in the driven end of the degree of freedom of motion, be at least respectively installed one corresponding to the position transducer of this degree of freedom;
Preserve one group of trigger condition; Wherein, a described trigger condition is all or part of output quantity in described one group of position transducer;
Output quantity and each trigger condition all or part of in described one group of position transducer are compared; When described output quantity is mated with at least one trigger condition, produce trigger pip;
According to described trigger pip, produce ray, and preserve ray and penetrate decay and obtain image information and described output quantity of mating with at least one trigger condition.
In the present embodiment, described driven end refers to last the link used unit that transmits action; Described degree of freedom comprises translational degree of freedom and rotational freedom.
In the present embodiment, the motion of object to be scanned need not be carried out according to fixed mode, such as can repeatedly moving back and forth a position, obtains the image of a plurality of these positions by Multiple-Scan, the reference each other of these images, thus improve the degree of accuracy while rebuilding.
Other realizes details can be with described in embodiment mono-to three.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in memory storage and be carried out by calculation element, or they are made into respectively to each integrated circuit modules, or a plurality of modules in them or step are made into single integrated circuit module to be realized.Like this, the present invention is not restricted to any specific hardware and software combination.
Certainly; the present invention also can have other various embodiments; in the situation that not deviating from spirit of the present invention and essence thereof; those of ordinary skill in the art are when making according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection domain of claim of the present invention.
Claims (12)
1. a flip flop equipment for industrial computer tomography technology, is characterized in that, comprising:
One group of position transducer; In scanning, will in the driven end of the degree of freedom of motion, at least respectively install one corresponding to the position transducer of this degree of freedom;
Memory module, for preserving one group of trigger condition; Wherein, a described trigger condition is all or part of output quantity in one group of position transducer;
Control module, for comparing all or part of output quantity and each trigger condition of described one group of position transducer; When mating with at least one trigger condition, described output quantity starts enable module;
Enable module, for send trigger pip at every turn when starting; Described trigger pip comprises for triggering radiogenic the first trigger pip and for the second trigger pip of trigger pip acquisition processing device.
2. flip flop equipment as claimed in claim 1, is characterized in that, also comprises:
First timer and second timer; The timing of described first timer equals described radiogenic excitation time delay, and the timing of described second timer equals the signal processing delay time of described signal acquisition and processing apparatus;
Described enable module first starts described first, second timer after each startup, when described first timer produces described the first trigger pip then, when described second timer produces described the second trigger pip then.
3. flip flop equipment as claimed in claim 1, is characterized in that, also comprises:
The 3rd timer;
Described control module also for restarting described the 3rd timer, when described the 3rd timer starts described enable module then when described output quantity is mated with at least one trigger condition.
4. the flip flop equipment as described in any one in claim 1 to 3, is characterized in that, described control module compares output quantity all or part of in described one group of position transducer and each trigger condition specifically and refers to:
Described control module is preserved in scanning in advance by the degree of freedom of motion, in the output quantity of described one group of position transducer, selects the output quantity of the position transducer corresponding with preserved degree of freedom, compares with corresponding output quantity in described each trigger condition.
5. flip flop equipment as claimed in claim 4, is characterized in that:
Described control module is also for the output quantity of position transducer corresponding to the degree of freedom of not moving before scanning being saved as to the position initial value of this degree of freedom, as the output quantity of position transducer corresponding to this degree of freedom in this scanning.
6. a scanning system for industry CT, is characterized in that, comprising:
For produce the radiographic source of ray when receiving trigger pip;
For when receiving trigger pip, according to ray, penetrate the signal acquisition and processing apparatus that decay obtains image information and preserves; Described trigger pip comprises for triggering radiogenic the first trigger pip and for the second trigger pip of trigger pip acquisition processing device;
Flip flop equipment, comprising:
One group of position transducer; In scanning, will in the driven end of the degree of freedom of motion, at least respectively install one corresponding to the position transducer of this degree of freedom;
Memory module, for preserving one group of trigger condition; Wherein, a described trigger condition is all or part of output quantity in described one group of position transducer;
Control module, for comparing all or part of output quantity and each trigger condition of described one group of position transducer; When mating with at least one trigger condition, described output quantity starts enable module;
Enable module, for send respectively described trigger pip to described radiographic source and described signal acquisition and processing apparatus when starting at every turn, by described, send to described signal acquisition and processing apparatus with the output quantity of at least one trigger condition coupling together with described trigger pip;
When described signal acquisition and processing apparatus is preserved image information, preserve together with the output quantity of receiving when this receives described trigger pip.
7. a triggering method for industry CT, comprising:
One group of position transducer is installed, in scanning, will in the driven end of the degree of freedom of motion, be at least respectively installed one corresponding to the position transducer of this degree of freedom;
Preserve one group of trigger condition; Wherein, a described trigger condition is all or part of output quantity in described one group of position transducer;
Output quantity and each trigger condition all or part of in described one group of position transducer are compared; When described output quantity is mated with at least one trigger condition, produce trigger pip; Described trigger pip comprises for triggering radiogenic the first trigger pip and for the second trigger pip of trigger pip acquisition processing device.
8. triggering method as claimed in claim 7, is characterized in that:
Described trigger pip comprises for triggering described radiogenic the first trigger pip and for triggering the second trigger pip of described signal acquisition and processing apparatus;
The step of described generation trigger pip specifically comprises:
After waiting for for first schedule time, produce described the first trigger pip, after second schedule time of wait, produce described the second trigger pip; The length of described first schedule time equals described radiogenic excitation time delay, and the length of described second schedule time equals the signal processing delay time of described signal acquisition and processing apparatus.
9. triggering method as claimed in claim 7, is characterized in that, also comprises:
When mating with at least one trigger condition, described output quantity restarts timing; When the time equaled for the 3rd schedule time, carry out the step of described generation trigger pip; The length of described the 3rd schedule time equals to restart timing to the time interval of carrying out the step of described generation trigger pip.
10. the triggering method as described in any one in claim 7 to 9, is characterized in that, the described step that output quantity all or part of in described one group of position transducer and each trigger condition are compared specifically comprises:
In preservation scanning in advance, by the degree of freedom of motion, in the output quantity of described one group of position transducer, select the output quantity of the position transducer corresponding with preserved degree of freedom, compare with corresponding output quantity in described each trigger condition.
11. triggering method as claimed in claim 10, is characterized in that, also comprise:
The current output quantity of position transducer corresponding to the degree of freedom of not moving before scanning is saved as to the position initial value of this degree of freedom, as the output quantity of position transducer corresponding to this degree of freedom in this scanning.
The scan method of 12. 1 kinds of industry CT, comprising:
One group of position transducer is installed, in scanning, will in the driven end of the degree of freedom of motion, be at least respectively installed one corresponding to the position transducer of this degree of freedom;
Preserve one group of trigger condition; Wherein, a described trigger condition is all or part of output quantity in described one group of position transducer;
Output quantity and each trigger condition all or part of in described one group of position transducer are compared; When described output quantity is mated with at least one trigger condition, produce trigger pip; Described trigger pip comprises for triggering radiogenic the first trigger pip and for the second trigger pip of trigger pip acquisition processing device;
According to described trigger pip, produce ray, and preserve ray and penetrate decay and obtain image information and described output quantity of mating with at least one trigger condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010171503.7A CN102235984B (en) | 2010-05-07 | 2010-05-07 | Triggering device, scanning system and triggering and scanning method for industrial computed tomography (CT) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201010171503.7A CN102235984B (en) | 2010-05-07 | 2010-05-07 | Triggering device, scanning system and triggering and scanning method for industrial computed tomography (CT) |
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| CN103019978B (en) * | 2012-12-31 | 2015-08-12 | 中国矿业大学(北京) | Based on intelligent trigger device and the control method thereof of embedded system |
| CN103058059B (en) * | 2013-01-04 | 2015-01-21 | 中联重科股份有限公司 | Synchronous control device for double-flat-boom tower crane and crane carriages thereof |
| CN103759681B (en) * | 2014-01-10 | 2016-05-11 | 天津大学 | The bearing calibration of micro-CT rotating shaft kinematic error |
| CN107102014B (en) * | 2017-06-06 | 2019-09-24 | 北京邮电大学 | Industry CT imaging control system and control method |
| WO2019169184A1 (en) * | 2018-02-28 | 2019-09-06 | DWFritz Automation, Inc. | Metrology system |
| CN109946327A (en) * | 2019-03-25 | 2019-06-28 | 天津三英精密仪器股份有限公司 | A kind of location triggered control method for CT scan and the system for implementing this method |
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