CN108490077A - A kind of real-time 3D total focus phased array supersonic imaging method, device and storage medium - Google Patents
A kind of real-time 3D total focus phased array supersonic imaging method, device and storage medium Download PDFInfo
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- CN108490077A CN108490077A CN201810128020.5A CN201810128020A CN108490077A CN 108490077 A CN108490077 A CN 108490077A CN 201810128020 A CN201810128020 A CN 201810128020A CN 108490077 A CN108490077 A CN 108490077A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/06—Visualisation of the interior, e.g. acoustic microscopy
- G01N29/0654—Imaging
- G01N29/069—Defect imaging, localisation and sizing using, e.g. time of flight diffraction [TOFD], synthetic aperture focusing technique [SAFT], Amplituden-Laufzeit-Ortskurven [ALOK] technique
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/07—Analysing solids by measuring propagation velocity or propagation time of acoustic waves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/01—Indexing codes associated with the measuring variable
- G01N2291/011—Velocity or travel time
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/0289—Internal structure, e.g. defects, grain size, texture
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Abstract
The embodiment of the invention discloses a kind of real-time 3D total focus phased array supersonic imaging methods, including step：Three dimensions rectangular coordinate system is established with top surface with the workpiece for measurement;The coupled block transitive of ultrasonic wave that each array element of two-dimensional array energy converter emits successively is calculated to the launch time of the target defect point in the workpiece for measurement, and reflection interval that the ultrasonic wave through the mark defect point reflection is received through the workpiece for measurement to the coupled zone by the two-dimensional array energy converter；Complete matrix data are established with the launch time, reflection interval, and target defect point is subjected to 3D total focus reconstruct.The embodiment of the invention also discloses a kind of devices and readable storage medium storing program for executing for the imaging of real-time 3D total focus phased array supersonic.Using the present invention, the complete matrix waveform signal for acquiring workpiece for measurement interior three-dimensional space in real time carries out real-time 3D total focus image checking, and detection imaging results are very intuitive, and detection speed is fast, and testing result is reliable, hurt is easy observation.
Description
Technical field
The present invention relates to ultrasound detection field more particularly to a kind of real-time 3D total focus phased array ultrasonic detection imaging sides
Method, device and storage medium.
Background technology
Current researcher both at home and abroad is directed to detection piece progress ultrasound detection and also rests on using the inspection of A type wave digital ultrasounds
The one-dimensional echo-signal for surveying instrument states detection piece, or carries out two to detection piece using traditional phased array imaging detector
It ties up the stage of section image checking, or drives conventional transducer to acquire workpiece waveform, acquisition by water seaoning by servo motor
Finish again one secondary 3D rendering of offline synthesis.In fact, the characterization processes of these three schemes are all more complicated, the two of traditional phased array
Although dimension imaging detection technology is also capable of detecting when the defect inside detection piece, due to being only to certain inside detection piece
A section is imaged, and testing result can not geometry and ruler of the effecting reaction defect in solid space inside detection piece
The intuitive of very little size, testing result is poor, is susceptible to the erroneous judgement of defect and fails to judge, for detecting the detection work of operating personnel
Skill is horizontal, detection experience requirement is relatively high, and a kind of above-mentioned last scheme picking rate is slow, and imaging efficiency is low, and pixel is low, leads to
Later the phase calculates synthesis processing reconstruct three-dimensional, can not be detected imaging in real time.
Invention content
Technical problem to be solved of the embodiment of the present invention is, provides a kind of real-time 3D total focus phased array supersonic imaging
Method, apparatus and storage medium.It can carry out 3D detection displays in real time to workpiece for measurement.
In order to solve the above-mentioned technical problem, an embodiment of the present invention provides a kind of real-time 3D total focus phased array supersonics to be imaged
Method includes the following steps：
S1：It is coupled in above workpiece for measurement using n × n two-dimensional array energy converters；
S2：Three dimensions rectangular coordinate system is established with top surface with the workpiece for measurement；
S3：The two-dimensional array energy converter is initialized；
S4：The coupled block transitive of ultrasonic wave that each array element of two-dimensional array energy converter emits successively is calculated to wait for described in
Survey workpiece in target defect point launch time, and through it is described mark defect point reflection ultrasonic wave through the workpiece for measurement extremely
The reflection interval that the coupled zone is received by the two-dimensional array energy converter；
S5：Complete matrix data are established with the launch time, reflection interval, and target defect point is subjected to 3D total focus reconstruct.
Further, further include the steps that the filtering that hilbert filter is carried out to the 3D total focus reconstruction result.
Further, described the step of being initialized to the two-dimensional array energy converter, carries out just by the following method
Each array element coordinate of beginning face array transducer：
Wherein, d expressions array element spacing, the thickness of h expressions coupled zone, i=1,2,3 ... n2。
Further, the launch time calculates through following manner：
Wherein,Indicate the coupled block transitive of ultrasonic wave to three of the refraction point in the workpiece for measurement
Dimension coordinate,Indicate the three-dimensional coordinate of arbitrary point I in workpiece, v1Indicate the velocity of sound of coupled zone, v2Indicate workpiece for measurement
The velocity of sound.
Further, the reflection interval calculates through following manner：
Wherein,Indicate that ultrasonic wave is transmitted to the three-dimensional of the refraction point of coupled zone through the workpiece for measurement and sits
Mark.
Further, the step S5 further includes following methods：
With Sij(t) complete matrix data are indicated, the corresponding 3D total focus of targeted imaging region I' points is reconstructed by with lower section
Formula carries out：
Correspondingly, the embodiment of the present invention additionally provides a kind of device for the imaging of real-time 3D total focus phased array supersonic,
Including memory, processor and it is stored in the computer program that can be run in the memory and on the processor, institute
State the step of realizing the above method when processor executes the computer program.
Correspondingly, the embodiment of the present invention additionally provides a kind of computer readable storage medium, the computer-readable storage
Media storage has computer program, is realized such as the step of the above method when computer program is executed by processor.
Implement the embodiment of the present invention, has the advantages that：Using two-dimensional array energy converter, acquisition waits for the present invention in real time
The complete matrix waveform signal of inside workpiece three dimensions is surveyed, and using the high-speed parallel operational capability of embedded processing chip, it is real
The real-time 3D total focus image checking for bolt is showed.It is very intuitive to detect imaging results, can really restore inside bolt
Overall structure, and the rotatable observation of figure, defect recognition is very simple, and detection speed is fast, when an average workpiece for measurement detects
Between about 2 seconds, testing result is reliable, hurt is easy observation.
Description of the drawings
Fig. 1 is the structural schematic diagram of complete matrix acquisition of the present invention；
Fig. 2 is the structural schematic diagram that the 3D of the present invention assembles entirely；
Fig. 3 is the schematic diagram of workpiece to be detected in the embodiment of the present invention；
Fig. 4 is that the 3D of the embodiment of the present invention assembles result schematic diagram entirely.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, the present invention is made into one below in conjunction with attached drawing
Step ground detailed description.
Structural schematic diagram shown in referring to Fig.1.
The embodiment of the present invention is illustrated with 8*8 two-dimensional array energy converters, in the present embodiment, provides 64 full parellels
Phased array hardware corridor, each channel can independently excite each array element of face array transducer and acquire echo data.System is logical
Crossing face array transducer, acquisition is detected 3D complete matrixs (3D-FMC, the Three-Dimensional Full in workpiece in real time
Matrix Capture) waveform signal, built-in hilbert filter in real time filters complete matrix signal in fpga chip
Wave with eliminate characteristic is shaken due to wave period caused by focus after the discontinuous problem of signal, treated complete matrix signal is again
It is realized by 3D total focus (3D-TFM, Three-Dimensional Total FocusingMethod) rule of built-in chip type
The real-time 3D total focus of hardware is handled, and is ultimately formed 3D total focus image checking results and is refreshed display in real time.
Two-dimensional array energy converter is one 8 × 8 face array transducer, and the wherein each array element of energy converter connects a phased array
Hardware transceiver channel, each array element number are expressed as：E1~E64.64 hardware transmission channels of system excite single array element, quilt successively
The ultrasonic wave of excitation array element transmitting is propagated in detected inside workpiece in the form of an approximate 3d space cone, is met
Sound wave is reflected back each array element of quilt cover array transducer and is connect in the form of ultrasonic echo after foreign medium, that is, defect in workpiece
It receives and stores, after traversal 1~64 array element of excitation, that is, complete the process of complete matrix data acquisition.Wherein WA(1,1) it indicates
A point reflections and the echo-signal received by array element 1 in the ultrasonic propagation to workpiece that array element 1 emits；WB(1,1) array element is indicated
B point reflections and the echo-signal received by array element 1 in the ultrasonic propagation to workpiece of 1 transmitting.And so on, WA(1,64) table
Show A point reflections and the echo-signal received by array element 64 in the ultrasonic propagation to workpiece of the transmitting of array element 1；WB(1,64) it indicates
B point reflections and the echo-signal received by array element 64 in the ultrasonic propagation to workpiece that array element 1 emits.The present invention is based on face battle arrays
Complete matrix data acquisition scheme, collected from three dimensions all angles with maximized ability all in workpiece for measurement
Information.
With reference to structural schematic diagram shown in Fig. 2.
The bottom center position of delay block or coupling block is corresponded to as three-dimensional system of coordinate using two-dimensional array energy converter central point
Origin O establishes three dimensions rectangular coordinate system.Wherein, E points indicate that the arbitrary array element of face battle array, I points indicate to be detected arbitrary in workpiece
A bit, R1Point indicates that the ultrasonic wave of array element E transmitting is transmitted to the points of the I in workpiece from delay block (or coupled zone), delay block with
The practical sound deflection point of workpiece interface, R2Point indicate I point reflections ultrasonic wave be transmitted to out of workpiece delay block (or coupling
Area) and received by array element E, in the practical sound deflection point of workpiece and delay block (or coupled zone) interface.
According to the three-dimensional system of coordinate model established, by taking the array transducer of n × n array elements face as an example, initialization face array transducer is each
Array element coordinate, specific initialization calculating process are as follows：
Array element x coordinate is initialized by complementation operation, rounding operation initializes array element y-coordinate, taken to the thickness of delay block
Negative initialization array element z coordinate.Wherein, the thickness of d expressions array element spacing, the selected delay block of h expressions or coupling block, i=1,2,
3,...n2。
Delay block or coupling block are set depending on workpiece for measurement size, and two-dimensional array is directly used when workpiece for measurement size meets
When energy converter is imaged, then delay block or coupling block are omitted, parameter h is then 0.
The object detection area grid of workpiece is turned to targeted imaging region using above-mentioned coordinate system, it is assumed that after gridding
The I' points of targeted imaging region correspond to the I points in workpiece.So, delayed piece of the ultrasonic wave emitted by array element E is transmitted to work
It is the time required to I points in part：
It is transmitted to delay block through workpiece by the ultrasonic wave of I point reflections and is received by array element E, required time is：
Wherein,Indicate refraction point R1Three-dimensional coordinate,Indicate refraction point R2Three-dimensional sit
Mark,Indicate the three-dimensional coordinate of arbitrary point I in workpiece.v1Indicate the delay block velocity of sound, v2Indicate the workpiece velocity of sound.
With Sij(t) complete matrix data are indicated, then the corresponding 3D total focus reconstruction result of targeted imaging region I' points is：
In order to avoid generating blooming effect, after being filtered to signal with hilbert filter, the detection image result of acquisition
Echo phase information is eliminated, amplitude information is only retained, the imaging effect and defect true form of defective hole are closer.
As shown in figure 3, the present invention is applied to the structural schematic diagram of detection bolt, wherein 1 is bolt, 2 be delay block, and 3 are
Two-dimensional array energy converter, it is as shown in Figure 4 that 3D assembles reconstruction result entirely.
The method of the embodiment of the present invention has the following advantages that：
1. real-time：The complete matrix waveform signal in acquisition bolt interior three-dimensional space in real time, and utilize embedded processing core
The high-speed parallel operational capability of piece realizes the real-time 3D total focus image checking for bolt, 3D total focus image brushes
New speed can reach 20 width/s.
2. acquiring information integrity：Excitation face battle array probe is traversed by multicast successively, it is each out of three dimensions domain
A space angle fully collects the complete matrix acquisition mode of all information in workpiece, compared to the original waveform in existing mode
Information content is N, then it is N that this method, which can reach collected information content,2。
3. detection image resolution ratio is high：By acquiring 3D complete matrix data in real time, complete matrix data are wished in real time
You are filtered Bert, and to extract the echo data of same-phase in complete matrix data, same phase in real time according to 3D total focus rule
It is added to the targeted imaging region of 3d space, calculate total focus handling result image in real time and is shown, in the present embodiment, 8*
The original complete matrix data acquisition system size 128Mbyte of collected every group of 8 two-dimensional array energy converters, 20 width of refreshing per second detection knot
Fruit image calculates, and generating date ability is 128*20/1024=2.5GByte/s.
The embodiment of the present invention additionally provides a kind of device for the imaging of real-time 3D total focus phased array supersonic, can be table
The computing devices such as laptop computer, notebook, palm PC and cloud server.It is described a kind of phased for real-time 3D total focus
The device of battle array ultrasonic imaging may include, but be not limited only to, processor, memory.It will be understood by those skilled in the art that described show
It is merely intended to a kind of device for the imaging of real-time 3D total focus phased array supersonic, is not constituted complete for real-time 3D to one kind
The restriction for focusing the device of phased array supersonic imaging may include than illustrating more or fewer components, or the certain portions of combination
Part or different components, for example, it is described it is a kind of for real-time 3D total focus phased array supersonic imaging device can also include
Input-output equipment, network access equipment, bus etc..
Alleged processor can be central processing unit (Central Processing Unit, CPU), can also be it
His general processor, digital signal processor (Digital Signal Processor, DSP), application-specific integrated circuit
(Application Specific Integrated Circuit, ASIC), ready-made programmable gate array (Field-
Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor logic,
Discrete hardware components etc..General processor can be microprocessor or the processor can also be any conventional processor
It is a kind of control centre of device for the imaging of real-time 3D total focus phased array supersonic Deng, the processor, using each
The various pieces of kind interface and a kind of entire device for the imaging of real-time 3D total focus phased array supersonic of connection.
The memory can be used for storing the computer program and/or module, and the processor is by running or executing
Computer program in the memory and/or module are stored, and calls the data being stored in memory, described in realization
A kind of various functions of device for the imaging of real-time 3D total focus phased array supersonic.The memory can include mainly storage journey
Sequence area and storage data field, wherein storing program area can storage program area, the application program (ratio needed at least one function
Such as sound-playing function, image player function) etc.；Storage data field can be stored uses created data according to mobile phone
(such as audio data, phone directory etc.) etc..In addition, memory may include high-speed random access memory, can also include non-
Volatile memory, such as hard disk, memory, plug-in type hard disk, intelligent memory card (Smart Media Card, SMC), safe number
Word (Secure Digital, SD) block, flash card (Flash Card), at least one disk memory, flush memory device or its
His volatile solid-state part.
If a kind of integrated module/unit of device for the imaging of real-time 3D total focus phased array supersonic is with software
The form of functional unit is realized and when sold or used as an independent product, can be stored in a computer-readable storage
In medium.Based on this understanding, the present invention realizes all or part of flow in above-described embodiment method, can also pass through meter
Calculation machine program is completed to instruct relevant hardware, and the computer program can be stored in a computer readable storage medium
In, the computer program is when being executed by processor, it can be achieved that the step of above-mentioned each embodiment of the method.Wherein, the calculating
Machine program includes computer program code, and the computer program code can be source code form, object identification code form, can hold
Style of writing part or certain intermediate forms etc..The computer-readable medium may include：The computer program code can be carried
Any entity or device, recording medium, USB flash disk, mobile hard disk, magnetic disc, CD, computer storage, read-only memory (ROM,
Read-Only Memory), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunications letter
Number and software distribution medium etc..It should be noted that the content that the computer-readable medium includes can be managed according to the administration of justice
Local legislation and the requirement of patent practice carry out increase and decrease appropriate, such as in certain jurisdictions, according to legislation and patent
Practice, computer-readable medium do not include electric carrier signal and telecommunication signal.
It is above disclosed to be only a preferred embodiment of the present invention, the power of the present invention cannot be limited with this certainly
Sharp range, therefore equivalent changes made in accordance with the claims of the present invention, are still within the scope of the present invention.
Claims (8)
1. a kind of real-time 3D total focus phased array supersonic imaging method, which is characterized in that include the following steps：
S1：It is coupled in above workpiece for measurement using n × n two-dimensional array energy converters；
S2：Three dimensions rectangular coordinate system is established with top surface with the workpiece for measurement；
S3：The two-dimensional array energy converter is initialized；
S4：The coupled block transitive of ultrasonic wave that each array element of two-dimensional array energy converter emits successively is calculated to the work to be measured
The launch time of target defect point in part, and the ultrasonic wave through the mark defect point reflection through the workpiece for measurement to described
The reflection interval that coupled zone is received by the two-dimensional array energy converter；
S5：Complete matrix data are established with the launch time, reflection interval, and target defect point is subjected to 3D total focus reconstruct.
2. real-time 3D total focus phased array supersonic imaging method according to claim 1, which is characterized in that further include to institute
State the step of 3D total focus reconstruction results carry out the filtering of hilbert filter.
3. real-time 3D total focus phased array supersonic imaging method according to claim 1 or 2, which is characterized in that described right
The step of two-dimensional array energy converter is initialized carries out each array element coordinate of initialization face array transducer by the following method：
Wherein, d expressions array element spacing, the thickness of h expressions coupled zone, i=1,2,3 ... n2。
4. real-time 3D total focus phased array supersonic imaging method according to claim 3, which is characterized in that when the transmitting
Between calculated through following manner：
Wherein,Indicate that the coupled block transitive of ultrasonic wave is sat to the three-dimensional of the refraction point in the workpiece for measurement
Mark,Indicate the three-dimensional coordinate of arbitrary point I in workpiece, v1Indicate the velocity of sound of coupled zone, v2Indicate workpiece for measurement
The velocity of sound.
5. real-time 3D total focus phased array supersonic imaging method according to claim 4, which is characterized in that when the reflection
Between calculated through following manner：
Wherein,Indicate that ultrasonic wave is transmitted to the three-dimensional of the refraction point of coupled zone through the workpiece for measurement and sits
Mark.
6. real-time 3D total focus phased array supersonic imaging method according to claim 5, which is characterized in that the step S5
Further include following methods：
With Sij(t) indicate complete matrix data, to targeted imaging region I' points corresponding 3D total focus reconstruct in the following manner into
Row：
7. a kind of device for the imaging of real-time 3D total focus phased array supersonic, including memory, processor and it is stored in institute
State the computer program that can be run in memory and on the processor, which is characterized in that the processor executes the meter
The step of method as claimed in claim 1 or 6 is realized when calculation machine program.
8. a kind of computer readable storage medium, the computer-readable recording medium storage has computer program, feature to exist
In, when the computer program is executed by processor realize as claimed in claim 1 or 6 method the step of.
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| CN111261305A (en) * | 2019-12-30 | 2020-06-09 | 太原科技大学 | Nondestructive flaw detection method for reactor pressure vessel head of offshore floating nuclear power station |
| CN111610254A (en) * | 2020-05-18 | 2020-09-01 | 武汉大学 | Laser ultrasonic full-focusing imaging detection device and method based on high-speed galvanometer cooperation |
| CN111929365A (en) * | 2020-08-07 | 2020-11-13 | 广东汕头超声电子股份有限公司 | Ultrasonic imaging detection display method |
| CN112684005A (en) * | 2020-12-10 | 2021-04-20 | 苏州热工研究院有限公司 | Full-focusing detection method based on two-dimensional matrix transducer |
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