CN110031554A - Array element localization method, device and the terminal of flexible ultrasonic transducer - Google Patents
Array element localization method, device and the terminal of flexible ultrasonic transducer Download PDFInfo
- Publication number
- CN110031554A CN110031554A CN201910233131.7A CN201910233131A CN110031554A CN 110031554 A CN110031554 A CN 110031554A CN 201910233131 A CN201910233131 A CN 201910233131A CN 110031554 A CN110031554 A CN 110031554A
- Authority
- CN
- China
- Prior art keywords
- array element
- neighbouring
- intensity value
- crosstalk signal
- ultrasonic transducer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
Abstract
The present invention is suitable for sensor technical field, provides array element localization method, device and the terminal of a kind of flexible ultrasonic transducer, wherein the array element localization method includes: the intensity value for acquiring crosstalk signal between reference array element and neighbouring array element；According to the intensity value, the corner dimension of sound field central axes between the reference array element and the neighbouring array element is calculated using the corresponding relationship between the crosstalk signal intensity value predefined and array element angle；The neighbouring coordinate of the array element relative to the reference array element is determined according to the corner dimension, with the position of the determination flexible ultrasonic transducer array element；The array element positioning for realizing flexible ultrasonic transducer, has the characteristics that array element positioning accuracy is high.
Description
Technical field
The invention belongs to the array element localization methods of sensor technical field more particularly to a kind of flexible ultrasonic transducer, dress
It sets and terminal.
Background technique
Ultrasonic transducer is also known as ultrasonic probe, is the core component of ultrasonic system.Traditional ultrasonic probe shape fixes,
Volume is big, can not match the development of portable ultrasound system and certain clinical application demands.For example, disaster rescue scene, and
The severe clinical application guarded for a long time is needed, the volume for being required to ultrasonic system is small as far as possible.In consideration of it, ultrasound field proposition is soft
Property ultrasonic transducer concept, can further mitigate the volume of portable ultrasound system, realize a tractor serves several purposes and guard for a long time
Purpose.
Flexible ultrasonic transducer not only has small in size, light-weight, flexible, and can completely be attached to human body
Curved surface realizes the characteristics of severe is guarded for a long time, moreover it is possible to it avoids adversely affecting imaging results bring by compressive strain, it can
To realize that body tissue carries out the comprehensive in-situ diagnostics in big visual angle, the diagnosis effect and image matter of tumour patch are effectively increased
Amount.
However, flexible ultrasonic transducer imaging there is also following technical problems: array element positioning and ultrasonic probe shape prison
Control, beam forming and image algorithm research etc..Wherein, the method for array element positioning and the monitoring of ultrasonic probe shape can use acceleration
The acceleration information for spending sensor acquisition carries out Primary Location.But acceleration transducer can only provide the azimuth information of array element,
The specific coordinate parameters of array element are unable to get, with the low problem of array element positioning accuracy.
Summary of the invention
In view of this, the embodiment of the present invention provides array element localization method, device and the terminal of a kind of flexible ultrasonic transducer,
It is able to solve the low problem of the array element positioning accuracy of flexible ultrasonic transducer.
The first aspect of the embodiment of the present invention provides a kind of array element localization method of flexible ultrasonic transducer, comprising:
Acquire the intensity value of crosstalk signal between reference array element and neighbouring array element；The reference array element is from described flexible super
Any one array element selected in sonic transducer, the neighbouring array element are the array element neighbouring with the reference array element；
According to the intensity value, the corresponding relationship between the crosstalk signal intensity value predefined and array element angle is utilized
Calculate the corner dimension of sound field central axes between the reference array element and the neighbouring array element；
The neighbouring coordinate of the array element relative to the reference array element is determined according to the corner dimension, it is described soft with determination
The position of property ultrasonic transducer array element.
The second aspect of the embodiment of the present invention provides a kind of array element positioning device of flexible ultrasonic transducer, comprising:
Acquisition unit, for acquiring the intensity value of crosstalk signal between reference array element and neighbouring array element；The reference array element
For any one array element selected from the flexible ultrasonic transducer, the neighbouring array element is neighbouring with the reference array element
Array element；
Computing unit, for utilizing the crosstalk signal intensity value and array element angle predefined according to the intensity value
Between corresponding relationship calculate the corner dimensions of sound field central axes between the reference array element and the neighbouring array element；
Determination unit, for determining the neighbouring seat of the array element relative to the reference array element according to the corner dimension
Mark, with the position of the determination flexible ultrasonic transducer array element.
The third aspect of the embodiment of the present invention provides a kind of terminal, including memory, processor and is stored in described
In memory and the computer program that can run on the processor, the processor are realized when executing the computer program
The step of above method.
The fourth aspect of the embodiment of the present invention provides a kind of computer readable storage medium, the computer-readable storage
The step of media storage has computer program, and the above method is realized when the computer program is executed by processor.
In the embodiment of the present invention, by the intensity value of crosstalk signal between acquisition reference array element and neighbouring array element, and according to
The intensity value calculates the reference using the corresponding relationship between the crosstalk signal intensity value predefined and array element angle
The corner dimension of sound field central axes between array element and the neighbouring array element；Then, the neighbour is determined further according to the corner dimension
Nearly coordinate of the array element relative to the reference array element realizes the array element positioning of flexible ultrasonic transducer, has array element positioning accuracy
High feature.In addition, being to carry out battle array using flexible transducer itself due in the array element positioning for carrying out flexible ultrasonic transducer
The calculating of first coordinate does not need that additional hardware device is arranged, and therefore, also helps the manufacture of flexible transducer.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is a kind of implementation flow chart of the array element localization method of flexible ultrasonic transducer provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of flexible ultrasonic transducer provided in an embodiment of the present invention；
Fig. 3 is the schematic diagram of the sound field of flexible ultrasonic transducer transmitting provided in an embodiment of the present invention；
Fig. 4 is the schematic diagram for the sound field that flexible ultrasonic transducer provided in an embodiment of the present invention emits when deformation occurs；
Fig. 5 is flexible ultrasonic transducer provided in an embodiment of the present invention carries out array element positioning schematic diagram when deformation occurs；
Fig. 6 is the structural block diagram of crosstalk signal acquisition device provided in an embodiment of the present invention；
Fig. 7 is a kind of structural block diagram of the array element positioning device of flexible ultrasonic transducer provided in an embodiment of the present invention；
Fig. 8 is a kind of terminal structure block diagram provided in an embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.Described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is logical
The component for the embodiment of the present invention being often described and illustrated herein in the accompanying drawings can be arranged and be designed with a variety of different configurations.
Therefore, claimed invention is not intended to limit to the detailed description of the embodiment of the present invention provided in the accompanying drawings below
Range, but be merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art are not having
Every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.In other feelings
In condition, the detailed description to well-known system, apparatus, circuit and method is omitted, in case unnecessary details interferes this
The description of invention.
In order to illustrate the technical solution of the present invention, the following is a description of specific embodiments.
Related notion just has been proposed in the eighties in last century for flexible ultrasonic transducer, and research multi-focus is led in the underwater sound
Domain can solve phase dispersion problem caused by underwater acoustic transducer array deformation caused by the acoustic disturbances such as wave.Into 21 century
Later, flexible ultrasonic transducer technology starts to exhibit one's skill to the full in ultrasonic non-destructive monitoring field, mainly solves abnormity and curved workpieces
Monitoring.Flexible transducer initially focuses on ultrasonic therapy and field of physical therapy in the application of medical field, the ultrasonic wave in the field
Frequency is lower, is poised for battle elemental size and density requirements are not high.The research of flexible ultrasonic transducer medical imaging field, recent years is
There is more academic research.Currently, flexible ultrasonic transducer imaging there is also following technical problems: array element positioning and super
The monitoring of sonic probe shape, beam forming and image algorithm research etc..
Specifically, ultrasonic imaging host system is in each array element transmitting of control flexible ultrasonic transducer and receives ultrasonic signal
When, need to obtain the relative position of each array element, using each array element as the start line of ultrasound image.That is, it is determined that array element
Position, determined that probe sends or receive the position of ultrasonic wave, and can determine therefrom that the start line of ultrasound image, make
Operation can be carried out according to ultrasound image scanning mode and each element position by obtaining ultrasonic imaging host system, super by what is received
Acoustical signal is converted to displayable ultrasound image, realizes and carries out ultrasonic imaging using flexible ultrasonic transducer.However, due to utilizing
During flexible ultrasonic transducer realizes imaging, shape not immobilizes, but is bonded skin surface, according to portion to be measured
Position outer shape is changed, and it is also continually changing that this, which will lead to the positional relationship between flexible ultrasonic transducer array element,.So
At present flexible ultrasonic transducer imaging there is also array element positioning technical problem.
Wherein, the method for array element positioning and the monitoring of ultrasonic probe shape can use the acceleration of acceleration transducer acquisition
Information carries out Primary Location.But acceleration transducer can only provide the azimuth information of array element, be unable to get the specific seat of array element
Parameter is marked, with the low problem of array element positioning accuracy.
Based on this, in the embodiment of the present invention, by acquiring the intensity value of crosstalk signal between reference array element and neighbouring array element,
And according to the intensity value, institute is calculated using the corresponding relationship between the crosstalk signal intensity value predefined and array element angle
State the corner dimension of sound field central axes between reference array element and the neighbouring array element；Then, it is determined further according to the corner dimension
The neighbouring coordinate of the array element relative to the reference array element realizes the array element positioning of flexible ultrasonic transducer, fixed with array element
Position feature with high accuracy.In addition, being to utilize flexible transducer itself due in the array element positioning for carrying out flexible ultrasonic transducer
The calculating for carrying out array element coordinate, does not need that additional hardware device is arranged, therefore, also helps the manufacture of flexible transducer.
Fig. 1 shows a kind of implementation process of the array element localization method of flexible ultrasonic transducer provided in an embodiment of the present invention
Schematic diagram, this method are applied to terminal, can be executed by the array element positioning device of the flexible ultrasonic transducer configured in terminal, fit
For needing to improve the situation of the array element positioning accuracy of flexible ultrasonic transducer, including step 101 is to step 103.
Step 101, the intensity value of crosstalk signal between reference array element and neighbouring array element is acquired；The reference array element is from institute
Any one array element selected in flexible ultrasonic transducer is stated, the neighbouring array element is the array element neighbouring with the reference array element.
Wherein, the crosstalk signal between flexible ultrasonic transducer array element is divided into electrical crosstalk harmony crosstalk.Electrical crosstalk and array element
Between the factors such as distribution capacity, coaxial wire mutual inductance and circuit board wiring it is related.Sound crosstalk result from piezoelectric vibrator and
The coupling of a variety of vibration modes of array element structure, array element is under pulse wave excitation except the thickness mode generated along array element thickness direction
Outside formula, can also generate along array element width oscillation crosswise and and the tangential vibrations along array element surface surface wave mode.In addition,
It also will form Lamb wave in back sheet and the non-separate section of matching layer, to farther away array element generation sound crosstalk signal.
For example, the structural schematic diagram of flexible ultrasonic transducer provided in an embodiment of the present invention as shown in Figure 2, the flexibility
Ultrasonic transducer includes piezoelectric vibrator 21, acoustic matching layer 22, back sheet 23 and the joint filling between the piezoelectric vibrator
Material 24.The piezoelectric vibrator 21 is used for through electromechanical Coupling to external radiation ultrasonic wave, and the acoustic matching layer 22 is used for
Acoustics coupling is carried out, the back sheet 23 improves the flexible transducer for absorbing the sound scattering of the piezoelectric vibrator backwards
Resolution ratio, the pointing 24 for reducing between the piezoelectric vibrator 21 acoustics coupling and support array element.
When applying voltage excitation signals to array element, the vibration as shown in Figure 2 along the vibration of array element thickness direction can be generated
Mode 25, along array element width direction vibration vibration mode 26, pointing transverse mode 27 and in back sheet and matching
The Lamb wave 28 and 29 of Es-region propagations, these vibration modes can travel to the neighbouring array element of ultrasound element, form crosstalk signal.
In general, crosstalk signal is inhibited generally as the noise factor for seriously affecting image quality.But due to flexibility
Deformation in the ultrasonic transducer course of work will drive array element and generate deflection, lead to the angle of the sound field central axes of adjacent array element
It changes, and causes the crosstalk signal intensity between adjacent array element that can also change with the variation of the angle.Therefore, this hair
In bright embodiment, the signal strength of the crosstalk signal between adjacent array element can use with the angle of adjacent array element sound field central axes
Variation and change this rule carry out array element positioning.
Wherein, it can use when carrying out the acquisition of the intensity value of crosstalk signal between the reference array element and neighbouring array element
Conventional signal acquisition circuit is acquired, and details are not described herein again.
Step 102, according to the intensity value, using between the crosstalk signal intensity value predefined and array element angle
Corresponding relationship calculates the corner dimension of sound field central axes between the reference array element and the neighbouring array element.
For example, as shown in figure 3, the sound field that the flexible ultrasonic transducer under sound emission state is emitted has direction
Property, and certain direction angle is formed, the secondary lobe of sound field can generate the crosstalk of certain effect to neighbouring array element.When flexible ultrasonic transducing
When deformation as shown in Figure 4 occurs for device, the crosstalk signal intensity between reference array element and neighbouring array element can change, and go here and there
The variation for disturbing signal strength will carry the angle information of sound field central axes between reference array element and neighbouring array element.
Generally, the angle is bigger, and crosstalk signal components amplitude relevant to the angle is smaller.Therefore, by building
Corresponding relationship between vertical crosstalk signal intensity value and array element angle, and obtain the crosstalk signal intensity value between array element
Calculate the angle between array element.
Step 103, the neighbouring coordinate of the array element relative to the reference array element is determined according to the corner dimension, with true
The position of the fixed flexible ultrasonic transducer array element.
After calculating the corner dimension between reference array element and the neighbouring array element, by establishing coordinate system
It determines the neighbouring coordinate of the array element relative to the reference array element, realizes array element positioning.
In the embodiment of the present invention, by the intensity value of crosstalk signal between acquisition reference array element and neighbouring array element, and according to
The intensity value calculates the reference using the corresponding relationship between the crosstalk signal intensity value predefined and array element angle
The corner dimension of sound field central axes between array element and the neighbouring array element；Then, the neighbour is determined further according to the corner dimension
Nearly coordinate of the array element relative to the reference array element realizes the array element positioning of flexible ultrasonic transducer, has array element positioning accuracy
High feature.In addition, being to carry out battle array using flexible transducer itself due in the array element positioning for carrying out flexible ultrasonic transducer
The calculating of first coordinate does not need that additional hardware device is arranged, and therefore, also helps the manufacture of flexible transducer.
Optionally, in above-mentioned steps 102, according to the intensity value, using the crosstalk signal intensity value predefined with
Corresponding relationship between array element angle calculates the corner dimension of sound field central axes between the reference array element and the neighbouring array element
It may include: that the corresponding pass between the crosstalk signal intensity value predefined and array element angle is utilized according to the intensity value E
SystemSound field central axes between the reference array element and the neighbouring array element are calculated
Corner dimension
Wherein,
P is the difference of the reference array element and the neighbouring array element number, between d is between two closest array elements
Away from k is vibration frequency constant；L is effective array element width, and θ is the direction angle of neighbouring array element, and φ is that crosstalk signal reaches the neighbour
The phase delay of nearly array element；A is single array element without crosstalk signal, the directivity function of piston-type ultrasonic vibrator；XeIt (p) is electricity string
Disturb directivity factor, XaIt (p) is acoustic crosstalk directivity factor；For electrical cross talk coefficient；For acoustic crosstalk coefficient,
WithValue be 0~1.
Specifically, utilizing the crosstalk signal intensity value and array element angle predefined according to the intensity value described
Between corresponding relationship calculate between the reference array element and the neighbouring array element before the corner dimension of sound field central axes, wrap
It includes: obtaining the structural parameters under the flexible ultrasonic transducer standard type；The structural parameters include two closest battle arrays
Spacing d between member, vibration frequency constant k；Effective array element width l, the direction angle θ of neighbouring array element, described in crosstalk signal reaches
The phase delay φ of neighbouring array element；Single array element is without crosstalk signal, the directivity function A of piston-type ultrasonic vibrator；Electrical cross talk refers to
To sex factor Xe(p), acoustic crosstalk directivity factor Xa(p)。
After obtaining the structural parameters under flexible ultrasonic transducer standard type, the string predefined is substituted into
Disturb the corresponding relationship between signal strength indication and array element angleIn, it can be according to described
The corner dimension of sound field central axes between the reference array element and the neighbouring array element is calculated in the intensity value of crosstalk signal
Then, the neighbouring coordinate of the array element relative to the reference array element is determined further according to the corner dimension.
Optionally, in above-mentioned steps 103, determine the neighbouring array element relative to described with reference to battle array according to the corner dimension
The coordinate of member may include: to be determined as the coordinate of the reference array element (0,0), and according to the corner dimensionDescribed in determination
The coordinate of neighbouring array element is
In addition, the coordinate for determining reference array element and the coordinate of the neighbouring array element neighbouring with the reference array element it
Afterwards, formula is utilizedIt can change
In generation, goes out the i+1 coordinate (m of flexible array elementi,ni) coordinate relative to the reference array element, until completing whole array element coordinates
Calculating, wherein i be greater than or equal to 2.
In the embodiment of the present invention, the intensity value of crosstalk signal be can wrap between the acquisition reference array element and neighbouring array element
It includes: the intensity value of the crosstalk signal between acquisition reference array element, and the neighbouring array element closest with the reference array element；Or
Person acquires reference array element, and the crosstalk signal between the neighbouring array element of the reference array element interval one or more array element
Intensity value.
That is, the neighbouring array element for the neighbouring array element closest with the reference array element can may be and institute
State the neighbouring array element of reference array element interval one or more array element.
When the neighbouring array element is the neighbouring array element closest with the reference array element, the above-mentioned crosstalk predefined
Corresponding relationship between signal strength indication and array element angleIn p be 1, as the neighbour
When nearly array element is the neighbouring array element with one, the reference array element interval, the above-mentioned crosstalk signal intensity value predefined and battle array
Corresponding relationship between first angleIn p be 2.
Due to being received adjacent to array element when the neighbouring array element is the neighbouring array element closest with the reference array element
The intensity value of crosstalk signal is maximum, therefore, when carrying out array element positioning, can acquire reference array element and with the reference array element
The intensity value of crosstalk signal between closest neighbouring array element carries out array element positioning, to reach higher array element positioning accuracy.
For example, as shown in figure 5, the coordinate of reference array element can be determined as coordinate when deformation occurs for flexible transducer
Origin (0,0) establishes coordinate system MON, and the coordinate of the closest array element of the reference array element is determined as (m1, n1) according to the ginseng
Examine the corner dimension between array element and the closest array elementThe coordinate for determining the neighbouring array element isThen, formula is recycledIteration goes out the i+1 of flexible array element
A coordinate (mi,ni) coordinate relative to the reference array element, until completing the calculating of whole array element coordinates, wherein i be greater than or
Equal to 2.
Optionally, in certain embodiments of the present invention, in above-mentioned steps 102, according to the intensity value, using preparatory
Corresponding relationship between the crosstalk signal intensity value determined and array element angle calculates the reference array element and the neighbouring array element
Between the corner dimensions of sound field central axes can also include: that the crosstalk signal predefined is searched according to the intensity value
Mapping table between intensity value and array element angle obtains sound field central axes between the reference array element and the neighbouring array element
Corner dimension.
For example, the mapping table between the intensity value and array element corner dimension of the crosstalk signal predefined is
Mapping table between the intensity value and array element corner dimension of the crosstalk signal being determined by experiment in advance.Into
When row array element positions, it is only necessary to obtain the intensity value of crosstalk signal between reference array element and neighbouring array element, so that it may by searching for
Mapping table between the intensity value and array element angle of the crosstalk signal predefined obtain the reference array element with it is described
The corner dimension of sound field central axes between neighbouring array element, and determine the neighbouring array element relative to institute according to the corner dimension
The coordinate for stating reference array element has the characteristics that calculation simplicity, significantly reduces the calculation amount for carrying out array element positioning.
Optionally, in some embodiments of the present invention, believe acquiring crosstalk between the reference array element and neighbouring array element
Number intensity value when can use independent crosstalk signal acquisition channel and carry out crosstalk signal acquisition so that crosstalk signal acquisition is logical
Road and the acquisition channel of normal echo-signal are isolated, and normal ultrasound echo signal is avoided to propose the interference of crosstalk signal
The accuracy that high array element coordinate calculates.
Specifically, as shown in fig. 6, switching the switching that switch 61 carries out echo wave signal acquisition mode by channel, by echo
Signal acquisition sensor 62 is input to crosstalk signal acquisition module 63 in the echo-signal that time to approach zero point acquires, and echo is believed
Number acquisition sensor 62 is input to echo wave signal acquisition module 64 in the echo-signal far from time zero acquisition, may be implemented to go here and there
It disturbs signal sampling channel and the acquisition channel of normal echo-signal is isolated, normal ultrasound echo signal is avoided to believe crosstalk
Number interference.
The embodiment of the present invention also provides a kind of array element positioning device of flexible ultrasonic transducer, as shown in fig. 7, comprises:
Acquisition unit 701, for acquiring the intensity value of crosstalk signal between reference array element and neighbouring array element；It is described to refer to battle array
Member is any one array element selected from the flexible ultrasonic transducer, and the neighbouring array element is neighbouring with the reference array element
Array element；
Computing unit 702, for being pressed from both sides using the crosstalk signal intensity value and array element that have predefined according to the intensity value
Corresponding relationship between angle calculates the corner dimension of sound field central axes between the reference array element and the neighbouring array element；
Determination unit 703, for determining the neighbouring array element relative to the reference array element according to the corner dimension
Coordinate, with the position of the determination flexible ultrasonic transducer array element.
Optionally, the computing unit 702, also particularly useful for:
According to the intensity value E, the corresponding pass between the crosstalk signal intensity value predefined and array element angle is utilized
SystemSound field central axes between the reference array element and the neighbouring array element are calculated
Corner dimension
Wherein,
P is the difference of the reference array element and the neighbouring array element number, between d is between two closest array elements
Away from k is vibration frequency constant；L is effective array element width, and θ is the direction angle of neighbouring array element, and φ is that crosstalk signal reaches the neighbour
The phase delay of nearly array element；A is single array element without crosstalk signal, the directivity function of piston-type ultrasonic vibrator；XeIt (p) is electricity string
Disturb directivity factor, XaIt (p) is acoustic crosstalk directivity factor；For electrical cross talk coefficient；For acoustic crosstalk coefficient,
WithValue be 0~1.
Optionally, the computing unit 702, also particularly useful for: the coordinate of the reference array element is determined as (0,0), and
According to the corner dimensionThe coordinate for determining the neighbouring array element isDescribed according to
After corner dimension determines the neighbouring coordinate of the array element relative to the reference array element, it is also used to utilize formulaIteration goes out flexible array element
I+1 coordinate (mi,ni) coordinate relative to the reference array element, wherein i is greater than or equal to 2.
Optionally, the computing unit 702, also particularly useful for: described according to the intensity value, using predefining
Crosstalk signal intensity value and array element angle between corresponding relationship calculate sound between the reference array element and the neighbouring array element
Before the corner dimension of field central axes, the structural parameters under the flexible ultrasonic transducer standard type are obtained；The structure ginseng
Number includes the spacing d, vibration frequency constant k between two closest array elements；Effective array element width l, the direction of neighbouring array element
Angle θ, crosstalk signal reach the phase delay φ of the neighbouring array element；Single array element is without crosstalk signal, the finger of piston-type ultrasonic vibrator
Tropism function A；Electrical cross talk directivity factor Xe(p), acoustic crosstalk directivity factor Xa(p)。
Optionally, the computing unit 702, also particularly useful for: according to the intensity value, search the crosstalk predefined
Mapping table between the intensity value and array element angle of signal obtains sound field between the reference array element and the neighbouring array element
The corner dimension of central axes.
Optionally, the acquisition unit 701, also particularly useful for: acquisition reference array element, and it is most adjacent with the reference array element
The intensity value of crosstalk signal between close neighbouring array element；Alternatively, acquisition reference array element, and with the reference array element interval one
The intensity value of crosstalk signal between the neighbouring array element of a or multiple array elements.
It should be noted that each unit is real in a kind of array element positioning device of flexible ultrasonic transducer provided in this embodiment
The now process of respective function specifically refers to the description of previous embodiment, and details are not described herein again.
Fig. 8 is a kind of schematic diagram of terminal provided in an embodiment of the present invention.As shown in figure 8, the terminal 8 of the embodiment is wrapped
It includes: processor 80, memory 81 and being stored in the computer that can be run in the memory 81 and on the processor 80
Program 82, such as the array element finder of flexible ultrasonic transducer.The processor 80 executes real when the computer program 82
Step in the array element localization method embodiment of existing above-mentioned each flexible ultrasonic transducer, for example, step 101 shown in FIG. 1 to
103.Alternatively, the processor 80 realizes each module/unit in above-mentioned each Installation practice when executing the computer program 82
Function, such as the function of unit 701 to 703 shown in Fig. 7.
The computer program 82 can be divided into one or more module/units, and one or more of modules/
Unit is stored in the memory 81, and is executed by the processor 80, to complete the present invention.One or more of moulds
Block/unit can be the series of computation machine program instruction section that can complete specific function, the instruction segment by describe it is described based on
Implementation procedure of the calculation machine program 82 in the terminal 8.For example, the computer program 82 can be divided into acquisition unit,
Computing unit and determination unit (unit in virtual bench), each unit concrete function is as follows:
Acquisition unit, for acquiring the intensity value of crosstalk signal between reference array element and neighbouring array element；The reference array element
For any one array element selected from the flexible ultrasonic transducer, the neighbouring array element is neighbouring with the reference array element
Array element；
Computing unit, for utilizing the crosstalk signal intensity value and array element angle predefined according to the intensity value
Between corresponding relationship calculate the corner dimensions of sound field central axes between the reference array element and the neighbouring array element；
Determination unit, for determining the neighbouring seat of the array element relative to the reference array element according to the corner dimension
Mark.
The array element positioning device of the flexible ultrasonic transducer may include, but be not limited only to, processor 80, memory 81.
It will be understood by those skilled in the art that Fig. 8 is only the example of terminal 8, the not restriction of structure paired terminal 8 may include ratio
More or fewer components are illustrated, perhaps the certain components of combination or different components, such as the flexible ultrasonic transducer
Array element positioning device can also include input-output equipment, network access equipment, bus etc..
Alleged processor 80 can be central processing unit (Central Processing Unit, CPU), can also be
Other general processors, digital signal processor (Digital Signal Processor, DSP), 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 is also possible to any conventional processor
Deng.
The memory 81 can be the internal storage unit of the terminal 8, such as the array element of flexible ultrasonic transducer is determined
The hard disk or memory of position device.The memory 81 is also possible to the External memory equipment of the terminal 8, such as the terminal 8
The plug-in type hard disk of upper outfit, intelligent memory card (Smart Media Card, SMC), secure digital (Secure Digital,
SD) block, flash card (Flash Card) etc..Further, the memory 81 can also have been deposited both the inside including the terminal 8
Storage unit also includes External memory equipment.The memory 81 is for storing needed for the computer program and the terminal 8
Other programs and data.The memory 81 can be also used for temporarily storing the data that has exported or will export.
It is apparent to those skilled in the art that for convenience of description and succinctly, only with above-mentioned each function
Can unit, module division progress for example, in practical application, can according to need and by above-mentioned function distribution by different
Functional unit, module are completed, i.e., the internal structure of described device is divided into different functional unit or module, more than completing
The all or part of function of description.Each functional unit in embodiment, module can integrate in one processing unit, can also
To be that each unit physically exists alone, can also be integrated in one unit with two or more units, it is above-mentioned integrated
Unit both can take the form of hardware realization, can also realize in the form of software functional units.In addition, each function list
Member, the specific name of module are also only for convenience of distinguishing each other, the protection scope being not intended to restrict the invention.Above system
The specific work process of middle unit, module, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, is not described in detail or remembers in some embodiment
The part of load may refer to the associated description of other embodiments.
Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is implemented in hardware or software, the specific application and design constraint depending on technical solution.Professional technician
Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed
The scope of the present invention.
In embodiment provided by the present invention, it should be understood that disclosed device/terminal device and method, it can be with
It realizes by another way.For example, device described above/terminal device embodiment is only schematical, for example, institute
The division of module or unit is stated, only a kind of logical function partition, there may be another division manner in actual implementation, such as
Multiple units or components can be combined or can be integrated into another system, or some features can be ignored or not executed.Separately
A bit, shown or discussed mutual coupling or direct-coupling or communication connection can be through some interfaces, device
Or the INDIRECT COUPLING or communication connection of unit, it can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated module/unit be realized in the form of SFU software functional unit and as independent product sale or
In use, can store in a computer readable storage medium.Based on this understanding, the present invention realizes above-mentioned implementation
All or part of the process in example method, can also instruct relevant hardware to complete, the meter by computer program
Calculation machine program can be stored in a computer readable storage medium, the computer program when being executed by processor, it can be achieved that on
The step of stating each embodiment of the method.Wherein, the computer program includes computer program code, the computer program generation
Code can be source code form, object identification code form, executable file or certain intermediate forms etc..The computer-readable medium
It may include: any entity or device, recording medium, USB flash disk, mobile hard disk, magnetic that can carry the computer program code
Dish, CD, computer storage, read-only memory (Read-Only Memory, ROM), random access memory (Random
Access Memory, RAM), electric carrier signal, telecommunication signal and software distribution medium etc..It should be noted that the meter
The content that calculation machine readable medium includes can carry out increase and decrease appropriate according to the requirement made laws in jurisdiction with patent practice,
It such as does not include electric carrier signal and telecommunications according to legislation and patent practice, computer-readable medium in certain jurisdictions
Signal.
Embodiment described above is merely illustrative of the technical solution of the present invention, rather than its limitations；Although referring to aforementioned reality
Applying example, invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each
Technical solution documented by embodiment is modified or equivalent replacement of some of the technical features；And these are modified
Or replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution should all
It is included within protection scope of the present invention.
Claims (10)
1. a kind of array element localization method of flexible ultrasonic transducer characterized by comprising
Acquire the intensity value of crosstalk signal between reference array element and neighbouring array element；The reference array element is to change from the flexible ultrasonic
Any one array element selected in energy device, the neighbouring array element are the array element neighbouring with the reference array element；
According to the intensity value, calculated using the corresponding relationship between the crosstalk signal intensity value predefined and array element angle
The corner dimension of sound field central axes between the reference array element and the neighbouring array element；
The neighbouring coordinate of the array element relative to the reference array element is determined according to the corner dimension, it is described flexible super with determination
The position of sonic transducer array element.
2. array element localization method as described in claim 1, which is characterized in that it is described according to the intensity value, using in advance really
Corresponding relationship between the crosstalk signal intensity value set and array element angle calculate the reference array element and the neighbouring array element it
Between the corner dimensions of sound field central axes include:
According to the intensity value E, the corresponding relationship between the crosstalk signal intensity value predefined and array element angle is utilizedThe folder of sound field central axes between the reference array element and the neighbouring array element is calculated
Angle size
Wherein,
Difference of the p for the reference array element and the neighbouring array element number, spacing of the d between two closest array elements, k are
Vibration frequency constant；L is effective array element width, and θ is the direction angle of neighbouring array element, and φ is that crosstalk signal reaches the neighbouring array element
Phase delay；A is single array element without crosstalk signal, the directivity function of piston-type ultrasonic vibrator；Xe(p) it is directed toward for electrical cross talk
Sex factor, XaIt (p) is acoustic crosstalk directivity factor；For electrical cross talk coefficient；For acoustic crosstalk coefficient,With's
Value is 0~1.
3. array element localization method as claimed in claim 2, which is characterized in that described to determine the neighbour according to the corner dimension
Nearly coordinate of the array element relative to the reference array element, comprising:
The coordinate of the reference array element is determined as (0,0), and according to the corner dimensionDetermine the seat of the neighbouring array element
It is designated as
4. array element localization method as claimed in claim 2 or claim 3, which is characterized in that determined described according to the corner dimension
After the neighbouring coordinate of the array element relative to the reference array element, comprising:
Utilize formulaIteration
The i+1 coordinate (m of flexible array element outi,ni) coordinate relative to the reference array element, wherein i is greater than or equal to 2.
5. array element localization method as claimed in any one of claims 1-3, which is characterized in that described according to the intensity
Value calculates the reference array element and institute using the corresponding relationship between the crosstalk signal intensity value predefined and array element angle
It states between neighbouring array element before the corner dimension of sound field central axes, comprising:
Obtain the structural parameters under the flexible ultrasonic transducer standard type；
The structural parameters include the spacing d between two closest array elements, vibration frequency constant k；Effective array element width l,
The direction angle θ of neighbouring array element, crosstalk signal reach the phase delay φ of the neighbouring array element；Single array element is without crosstalk signal, piston
The directivity function A of type ultrasonic vibrator；Electrical cross talk directivity factor Xe(p), acoustic crosstalk directivity factor Xa(p)。
6. array element localization method as described in claim 1, which is characterized in that it is described according to the intensity value, using in advance really
Corresponding relationship between the crosstalk signal intensity value set and array element angle calculate the reference array element and the neighbouring array element it
Between the corner dimensions of sound field central axes include:
According to the intensity value, the mapping table between the intensity value and array element angle of the crosstalk signal predefined is searched
Obtain the corner dimension of sound field central axes between the reference array element and the neighbouring array element.
7. array element localization method as described in claim 1, which is characterized in that between the acquisition reference array element and neighbouring array element
The intensity value of crosstalk signal includes:
Acquire the intensity value of the crosstalk signal between reference array element, and the neighbouring array element closest with the reference array element；Or
Person,
Acquire reference array element, and the crosstalk signal between the neighbouring array element of the reference array element interval one or more array element
Intensity value.
8. a kind of array element positioning device of flexible ultrasonic transducer characterized by comprising
Acquisition unit, for acquiring the intensity value of crosstalk signal between reference array element and neighbouring array element；The reference array element be from
Any one array element selected in the flexible ultrasonic transducer, the neighbouring array element are the battle array neighbouring with the reference array element
Member；
Computing unit is used for according to the intensity value, using between the crosstalk signal intensity value predefined and array element angle
Corresponding relationship calculate the corner dimensions of sound field central axes between the reference array element and the neighbouring array element；
Determination unit, for determining the neighbouring coordinate of the array element relative to the reference array element according to the corner dimension, with
Determine the position of the flexible ultrasonic transducer array element.
9. a kind of terminal, including memory, processor and storage can be run in the memory and on the processor
Computer program, which is characterized in that the processor is realized when executing the computer program as claim 1 to 7 is any
The step of item the method.
10. a kind of computer readable storage medium, the computer-readable recording medium storage has computer program, and feature exists
In when the computer program is executed by processor the step of any one of such as claim 1 to 7 of realization the method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910233131.7A CN110031554B (en) | 2019-03-26 | 2019-03-26 | Array element positioning method and device of flexible ultrasonic transducer and terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910233131.7A CN110031554B (en) | 2019-03-26 | 2019-03-26 | Array element positioning method and device of flexible ultrasonic transducer and terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110031554A true CN110031554A (en) | 2019-07-19 |
| CN110031554B CN110031554B (en) | 2021-07-23 |
Family
ID=67236651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910233131.7A Active CN110031554B (en) | 2019-03-26 | 2019-03-26 | Array element positioning method and device of flexible ultrasonic transducer and terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110031554B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114145767A (en) * | 2021-11-30 | 2022-03-08 | 京东方科技集团股份有限公司 | Acoustic probe, positioning method of acoustic receiving array element of acoustic probe and imaging method of acoustic receiving array element |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101152646A (en) * | 2006-09-27 | 2008-04-02 | 香港理工大学 | Flexible ultrasonic transducer array and applying device of the same |
| CN103064056A (en) * | 2012-12-19 | 2013-04-24 | 同方电子科技有限公司 | Antenna array element position error detection method in interference environment |
| CN103746757A (en) * | 2014-01-08 | 2014-04-23 | 中国人民解放军理工大学 | Single-satellite interference source positioning method based on satellite-borne multi-wave-beam antenna |
| CN104792861A (en) * | 2015-05-20 | 2015-07-22 | 上海海事大学 | Flexible array eddy-current probe for detecting conductive structure defects and detection method |
| CN106019229A (en) * | 2016-05-20 | 2016-10-12 | 中国民用航空总局第二研究所 | Acoustic positioning method and system and sound sensing device of airport surface object |
| CN107037422A (en) * | 2017-05-11 | 2017-08-11 | 西北大学 | A kind of passive type localization method towards multiple application |
| CN107543864A (en) * | 2016-09-14 | 2018-01-05 | 北京卫星环境工程研究所 | Spacecraft leaks positioning acoustic matrix sensor |
| CN108181606A (en) * | 2017-12-28 | 2018-06-19 | 成都信息工程大学 | Radiation source based on array element radiation energy is made an uproar passive orientation method |
| CN108414984A (en) * | 2018-01-16 | 2018-08-17 | 湖北工业大学 | A kind of submarine target localization method based on Second Order Interferometric |
-
2019
- 2019-03-26 CN CN201910233131.7A patent/CN110031554B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101152646A (en) * | 2006-09-27 | 2008-04-02 | 香港理工大学 | Flexible ultrasonic transducer array and applying device of the same |
| CN103064056A (en) * | 2012-12-19 | 2013-04-24 | 同方电子科技有限公司 | Antenna array element position error detection method in interference environment |
| CN103746757A (en) * | 2014-01-08 | 2014-04-23 | 中国人民解放军理工大学 | Single-satellite interference source positioning method based on satellite-borne multi-wave-beam antenna |
| CN104792861A (en) * | 2015-05-20 | 2015-07-22 | 上海海事大学 | Flexible array eddy-current probe for detecting conductive structure defects and detection method |
| CN106019229A (en) * | 2016-05-20 | 2016-10-12 | 中国民用航空总局第二研究所 | Acoustic positioning method and system and sound sensing device of airport surface object |
| CN107543864A (en) * | 2016-09-14 | 2018-01-05 | 北京卫星环境工程研究所 | Spacecraft leaks positioning acoustic matrix sensor |
| CN107037422A (en) * | 2017-05-11 | 2017-08-11 | 西北大学 | A kind of passive type localization method towards multiple application |
| CN108181606A (en) * | 2017-12-28 | 2018-06-19 | 成都信息工程大学 | Radiation source based on array element radiation energy is made an uproar passive orientation method |
| CN108414984A (en) * | 2018-01-16 | 2018-08-17 | 湖北工业大学 | A kind of submarine target localization method based on Second Order Interferometric |
Non-Patent Citations (4)
| Title |
|---|
| BUYE XU ET AL.: "Amplitude, phase, location and orientation calibration of an acoustic vector sensor array, part I: Theory", 《PROCEEDINGS OF MEETINGS ON ACOUSTICS》 * |
| ISRAEL SÁNCHEZ DOMÍNGUEZ ET AL: "Crosstalk effects caused by the geometry of piezoelectric elements in matrix ultrasonic transducers", 《BRAZILIAN JOURNAL OF BIOMEDICAL ENGINEERING》 * |
| 刘健康 等: "影响超声换能器阵指向性的几个关键因素研究", 《压电与声光》 * |
| 诸国磊 等: "特殊环境下的高精度超声定位误差研究", 《西北工业大学学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114145767A (en) * | 2021-11-30 | 2022-03-08 | 京东方科技集团股份有限公司 | Acoustic probe, positioning method of acoustic receiving array element of acoustic probe and imaging method of acoustic receiving array element |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110031554B (en) | 2021-07-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103181786B (en) | Ultrasonic transducer, ultrasonic probe, and ultrasound image diagnosis apparatus | |
| AU2015292238B2 (en) | Planar sensor array | |
| JP5424933B2 (en) | Biological information processing device | |
| CN110248606A (en) | Air pocket positioning | |
| CN104135937A (en) | Determining material stiffness using multiple aperture ultrasound | |
| CN105556260B (en) | broadband acoustical holography | |
| WO2010003836A1 (en) | Method for reconstructing an acoustic field | |
| CN106999162A (en) | Diagnostic ultrasound equipment and photoelastic evaluation method | |
| CN106659473A (en) | Ultrasound imaging apparatus | |
| JP6737464B2 (en) | Test system, waveform simulator device, test method and program | |
| CN105167802A (en) | Doppler imaging method and device | |
| JP2018093974A (en) | Ultrasonic signal processing device, ultrasonic signal processing method, and ultrasonic diagnosis device | |
| CN101506683A (en) | Ultrasound imaging probe for imaging a temporary change in an environment | |
| US20190306649A1 (en) | Acoustic metamaterial device, method and computer program | |
| US20200337679A1 (en) | Ultrasonic signal processing apparatus, ultrasonic diagnostic apparatus, ultrasonic signal processing method, and ultrasonic signal processing program | |
| CN107205720B (en) | Ultrasonic adaptive beam forming method and application thereof to transcranial imaging | |
| CN110031554A (en) | Array element localization method, device and the terminal of flexible ultrasonic transducer | |
| CN109543318B (en) | Human body channel modeling method, terminal equipment and storage medium | |
| Matte et al. | Optimization of a phased-array transducer for multiple harmonic imaging in medical applications: frequency and topology | |
| Wei et al. | Finite element simulation of broadband biosonar signal propagation in the near-and far-field of an echolocating Atlantic bottlenose dolphin (Tursiops truncatus) | |
| JP2014090353A (en) | Sound source position estimation device | |
| JP2019187777A (en) | Ultrasound diagnostic apparatus and ultrasound signal processing method | |
| Opieliński et al. | Crosstalk effect in medical ultrasound tomography imaging | |
| US20200015787A1 (en) | Ultrasound signal processing device, ultrasound diagnostic device, and ultrasound signal processing method | |
| JP2018000677A (en) | Ultrasonic signal processing device, ultrasonic signal processing method, and ultrasonic diagnostic apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |