CN107495986A - The viscoelastic measuring method of medium and device - Google Patents
The viscoelastic measuring method of medium and device Download PDFInfo
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- CN107495986A CN107495986A CN201710650202.4A CN201710650202A CN107495986A CN 107495986 A CN107495986 A CN 107495986A CN 201710650202 A CN201710650202 A CN 201710650202A CN 107495986 A CN107495986 A CN 107495986A
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Abstract
The invention discloses a kind of viscoelastic measuring method of medium and device, it is related to field of measuring technique.Including, reed takes detection ripple echo-signal of the medium under vibrational excitation, the ripple echo-signal detection ripple echo signal samples centrally stored with data will be detected to match, determine the viscoplasticity information of medium, wherein, data set is stored with detection ripple echo signal samples of the dielectric sample of known viscoplasticity information under vibrational excitation.The present invention passes through the lookup in data set and detection ripple echo signal samples of the viscoelastic dielectric sample under vibrational excitation known to detection echo-signal similarity degree highest of the medium to be measured under vibrational excitation, to determine the viscoplasticity of medium to be measured, can be in the case where being chosen without estimation and characteristic point, obtain the viscoplasticity of medium, operand is greatly reduced, and measuring speed is dramatically speeded up.
Description
Technical field
The present invention relates to field of measuring technique, the more particularly to viscoelastic measuring method of medium and device.
Background technology
Mechanical oscillation or shearing wave vibration be when propagating in media as well, and different at the time of, wavefront can arrive along the direction of propagation
Up to different positions, in different time arrival diverse location, this information can form position time diagram to such wavefront, uniform
Tissue in, position time diagram is usually straight twill-like figure.For such twill-like figure, its slope is shaken by the unit interval
The dynamic distance decision propagated, the i.e. speed of Vibration propagation.In uniform medium, the speed and medium viscoplasticity of Vibration propagation have
When closing, thus vibrational excitation is carried out to medium, by measuring the propagation characteristic of vibration, medium viscoplasticity can be measured.
In the prior art, when being measured to medium viscoplasticity, it is necessary to characteristic point selection be carried out, at different moments, no
Characteristic point with position carries out linear fit, draws the quantitative parameter of dynamic ultrasound viscoplasticity imaging.Under normal circumstances, characteristic point
When being propagated in media as well by vibrating medium displacement or strain etc. determine, at this moment need first to carry out estimation, obtain medium
The information such as displacement or strain, then carries out follow-up computing again.But the operand that this method is present needed for estimation is larger,
Characteristic point chooses the problems such as complicated.
The content of the invention
The embodiments of the invention provide a kind of viscoelastic measuring method of medium and device.Aim to solve the problem that prior art intermediary
Operand in matter viscoelasticity measurement needed for estimation is larger, and characteristic point chooses the problem of complicated.For the implementation to disclosure
The some aspects of example have a basic understanding, shown below is simple summary.The summarized section is not extensive overview, not yet
It is key/critical component to be determined or describes the protection domain of these embodiments.Its sole purpose is with simple form
Some concepts are presented, in this, as the preamble of following detailed description.
In a first aspect, the embodiments of the invention provide a kind of viscoelastic measuring method of medium, including：
Obtain detection ripple echo-signal of the medium under vibrational excitation；
The ripple echo-signal detection ripple echo signal samples centrally stored with data will be detected to match, determine the viscoelastic of medium
Property information；
Wherein, data set is stored with detection ripple echo-signal of the dielectric sample of known viscoplasticity information under vibrational excitation
Sample.
Optionally, vibrational excitation is shearing wave excitation, and detection ripple echo-signal is ultrasound echo signal, and data set is ultrasound
Signal data collection.
Optionally, in addition to：
Ultrasonic echo data is obtained in the first moment t1；
By the centrally stored communication mode data of ultrasonic echo data loading communication mode data, ultrasound echo signal is generated
Sample；
Generate ultrasonic signal data set；
Wherein, dielectric sample of the communication mode data including known viscoplasticity information is each under given vibrational excitation
The spread state data at moment.
Optionally, ultrasound echo signal of the medium under vibrational excitation is obtained, including：Medium is obtained from the second moment t2 to exist
Ultrasound echo signal under vibrational excitation；
The ripple echo-signal detection ripple echo signal samples centrally stored with data will be detected to match, including：Will be from second
One or more of ultrasound echo signal that moment t2 is obtained is matched with ultrasound echo signal sample；
Second moment t2 is after vibrational excitation.
Optionally, in addition to：
Before matching, ultrasound echo signal and ultrasound echo signal sample are subjected to time alignment and spacial alignment.
Optionally, time alignment includes：The time difference is determined, the time difference is the second moment t2 and vibrational excitation initial time
Smaller value in difference and the second moment t2 and the first moment t1 difference；Time alignment is carried out according to the time difference；
Spacial alignment includes：Border and the depth of medium are determined, carries out spacial alignment；Or, carried out based on default depth
Spacial alignment.
Optionally, communication mode data set includes different viscoelastic different medium samples respectively at least one shearing wave
Under excitation, in spread state data caused by one or more moment.
Optionally, vibrational excitation includes：One in the continuous or mechanical oscillation harmony radiation force pulses of pulse mode；
Range of movement of the medium under vibrational excitation is 0.01 micron to 10 millimeters；
Motion frequency of the medium under vibrational excitation is 20 hertz to 2500 hertz, and the duration was 50 microseconds to 1 second.
Optionally, it is ultrasound echo signal to detect ripple echo-signal；The pulse of vibrational excitation repeat occurrence frequency for 10 to
20000 hertz；Detecting ripple echo-signal includes the 100 frames detection ripple echo data of at least continuous acquisition.
Optionally, viscoplasticity includes at least one in viscosity and elasticity；When viscoplasticity is sticky, viscoplasticity packet
Include viscosity information or viscosity information and elastic information；When viscoplasticity is elastic, viscoplasticity information includes elastic information or viscous
Property information and elastic information；When viscoplasticity is sticky and elastic, viscoplasticity information includes viscosity information and elastic information.
Second aspect, the embodiments of the invention provide a kind of viscoelastic measurement apparatus of medium, including：
Probe, for obtaining detection ripple echo-signal of the medium under vibrational excitation；
Memory, for data storage collection, data set is stored with the dielectric sample of known viscoplasticity information in vibrational excitation
Under detection ripple echo signal samples；
Processor, for detection ripple echo-signal to be matched with the detection ripple echo signal samples in data set, it is determined that being situated between
The viscoplasticity information of matter.
Optionally, vibrational excitation is shearing wave excitation, and detection ripple echo-signal is ultrasound echo signal, and data set is ultrasound
Signal data collection.
Optionally, probe is additionally operable to, and ultrasonic echo data is obtained in the first moment t1；
Processor is additionally operable to, and ultrasonic echo data is loaded into the centrally stored communication mode data of communication mode data, raw
Into ultrasound echo signal sample；Generate ultrasonic signal data set；
Wherein, dielectric sample of the communication mode data including known viscoplasticity information is each under given vibrational excitation
The spread state data at moment.
Optionally, probe is additionally operable to, and ultrasound echo signal of the medium under vibrational excitation is obtained from the second moment t2；
Processor is additionally operable to, by one or more of ultrasound echo signal obtained from the second moment t2 and ultrasonic echo
Sample of signal is matched；
Wherein, the second moment t2 is after vibrational excitation.
Optionally, processor is additionally operable to：Before matching, when ultrasound echo signal and ultrasound echo signal sample being carried out
Between alignment and spacial alignment.
Optionally, time alignment includes：The time difference is determined, the time difference is the second moment t2 and vibrational excitation initial time
Smaller value in difference and the second moment t2 and the first moment t1 difference；Time alignment is carried out according to the time difference；
Spacial alignment includes：Border and the depth of medium are determined, carries out spacial alignment；Or, carried out based on default depth
Spacial alignment.
Optionally, communication mode data set includes different viscoelastic different medium samples respectively at least one shearing wave
Under excitation, in spread state data caused by one or more moment.
The viscoelastic measuring method of medium disclosed in the embodiment of the present invention, by being searched and medium to be measured in data set
Viscoelastic dielectric sample is under vibrational excitation known to detection ripple echo-signal similarity degree highest under vibrational excitation
Ripple echo signal samples are detected, can be without estimation and characteristic point selection to determine the viscoplasticity of medium to be measured
In the case of, the viscoplasticity of medium is obtained, operand is greatly reduced, and measuring speed is dramatically speeded up.
It should be appreciated that the general description and following detailed description of the above are only exemplary and explanatory, not
Can the limitation present invention.
Brief description of the drawings
Accompanying drawing herein is merged in specification and forms the part of this specification, shows the implementation for meeting the present invention
Example, and for explaining principle of the invention together with specification.
Fig. 1 is a kind of flow chart of the viscoelastic measuring method of medium disclosed in the embodiment of the present invention；
Fig. 2 is the flow chart of another viscoelastic measuring method of medium disclosed in the embodiment of the present invention；
Fig. 3 is a kind of schematic diagram of ultrasound echo signal disclosed in the embodiment of the present invention；
Fig. 4 is a kind of schematic diagram of ultrasonic echo data disclosed in the embodiment of the present invention；
Fig. 5 is a kind of schematic diagram of ultrasound echo signal sample disclosed in the embodiment of the present invention；
Fig. 6 is a kind of schematic diagram of ultrasound echo signal sample disclosed in the embodiment of the present invention；
Fig. 7 is a kind of schematic diagram of ultrasound echo signal sample disclosed in the embodiment of the present invention；
Fig. 8 is a kind of schematic diagram of ultrasound echo signal sample disclosed in the embodiment of the present invention；
Fig. 9 is a kind of schematic diagram of the viscoelastic measurement apparatus of medium disclosed in the embodiment of the present invention.
Embodiment
The following description and drawings fully show specific embodiments of the present invention, to enable those skilled in the art to
Put into practice them.Embodiment only represents possible change.Unless explicitly requested, otherwise single components and functionality is optional, and
And the order of operation can change.The part of some embodiments and feature can be included in or replace other embodiments
Part and feature.The scope of embodiment of the present invention includes the gamut of claims, and the institute of claims
There is obtainable equivalent.Herein, each embodiment can individually or generally be represented that this is only with term " invention "
It is merely for convenience, and if in fact disclosing the invention more than one, it is not meant to automatically limit the scope of the application
For any single invention or inventive concept.Herein, such as first and second or the like relational terms are used only for one
Entity or operation make a distinction with another entity or operation, exist without requiring or implying between these entities or operation
Any actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant be intended to it is non-exclusive
Property includes, so that process, method or equipment including a series of elements not only include those key elements, but also including
The other element being not expressly set out.Each embodiment herein is described by the way of progressive, and each embodiment stresses
Be all difference with other embodiment, between each embodiment identical similar portion mutually referring to.For implementing
For structure, product etc. disclosed in example, due to its with embodiment disclosed in part it is corresponding, so fairly simple, the phase of description
Part is closed referring to method part illustration.
The embodiment of the invention discloses a kind of viscoelastic measuring method of medium, as shown in figure 1, comprising the following steps.
S101, obtain detection ripple echo-signal of the medium under vibrational excitation.
S102, ripple echo-signal detection ripple echo signal samples centrally stored with data will be detected match, determine medium
Viscoplasticity information, wherein, data set is stored with detection ripple of the dielectric sample of known viscoplasticity information under vibrational excitation and returned
Ripple sample of signal.
In S101, vibrational excitation includes, but are not limited to mechanical vibratory excitation or acoustic radiation force excitation.Further, machine
Tool vibrational excitation and acoustic radiation force excitation can be the modes such as continuous or pulse.Exemplary, fortune of the medium under vibrational excitation
Dynamic to may range from 0.01 micron to 10 millimeters, motion frequency of the medium under vibrational excitation is 20 hertz to 2500 hertz, is held
The continuous time was 50 microseconds to 1 second.
Detection ripple include, but are not limited to ultrasonic wave or light wave, optionally, by mechanical oscillation, acoustic radiation force or other can
In a manner of producing vibration, after carrying out vibrational excitation to medium, medium produces vibration, and vibration is propagated in media as well.Due to vibration
Spread speed in media as well is limited, therefore can utilize ultrasonic wave, light wave or the faster ripple of other spread speeds to vibration
Communication mode is tracked.By obtaining detection ripple echo-signal of the medium under vibrational excitation, reflection is vibrated in media as well
Communication mode.Further, detection ripple echo-signal can be ultrasound echo signal, and the pulse of vibrational excitation repeats occurrence frequency
For 10 to 20000 hertz.
Detection ripple echo-signal in a period of time, by a series of detection ripple echo data inscribed during in this period
Composition.Optionally, the 100 frames detection ripple echo data of at least continuous acquisition can be included by detecting ripple echo-signal.
Medium viscoplasticity is the important factor in order for determining to vibrate communication mode in media as well.Medium under vibrational excitation,
Corresponding spread state can be produced different at the time of, spread state then forms communication mode along the change of time.Spread state
Refer to the medium motion state at a certain moment, communication mode is then change of the medium along the spread state of time.
When medium has different viscoplasticity, then caused spread state is different, and further results in detection ripple echo
The difference of signal.
In S102, data set is stored with the detection ripple of the viscoplasticity and dielectric sample of dielectric sample under vibrational excitation
Echo signal samples, according to vibrational excitation and detection ripple echo-signal, lookup matching is carried out in data set and can determine that accordingly
Medium viscoplasticity.
Optionally, medium viscoplasticity can include modulus of shearing, Young's modulus, shear viscoelasticity, shear viscosity, machinery resistance
At least one of anti-, mechanical relaxation time and anisotropy etc. or a variety of combinations.
Optionally, viscoplasticity includes at least one in viscosity and elasticity.Exemplary, when viscoplasticity is sticky, glue
Elastic information can include viscosity information or viscosity information and elastic information.Exemplary, when viscoplasticity is elastic, viscoelastic
Property information can include elastic information or viscosity information and elastic information.Exemplary, when viscoplasticity is sticky and elastic,
Viscoplasticity information can include viscosity information and elastic information.
It can be seen that the viscoelastic measuring method of medium disclosed in the embodiment of the present invention, by searched in data set with it is to be measured
Viscoelastic dielectric sample known to measuring detection ripple echo-signal similarity degree highest of the medium under vibrational excitation swashs in vibration
Detection ripple echo signal samples under encouraging, can be without estimation and feature to determine the viscoplasticity of medium to be measured
In the case that point is chosen, the viscoplasticity of medium is obtained, operand is greatly reduced, and measuring speed is dramatically speeded up.
Exemplary, when vibrational excitation is shearing wave excitation, detection ripple is ultrasonic wave, and detection ripple echo-signal is returned for ultrasound
Ripple signal, when data set is ultrasonic signal data set, the embodiment of the invention also discloses the viscoelastic measurement side of another medium
Method, as shown in Fig. 2 comprising the following steps.
S201, obtain ultrasound echo signal of the medium in the case where shearing wave excitation.
S202, by ultrasound echo signal and the centrally stored ultrasound echo signal sample matches of data, determine the viscous of medium
Elasticity, wherein, data set is stored with the ultrasonic echo of the viscoplasticity information and dielectric sample of dielectric sample in the case where shearing wave excitation
Sample of signal.
Data set can store multi-group data, and every group of data have recorded medium caused by the case where one kind shears wave excitation respectively
Ultrasound echo signal.Further, ultrasonic signal data set can store at least one dielectric sample and be cut respectively at least one
Cut caused ultrasound echo signal sample under wave excitation, and in data set, dielectric sample including dielectric sample viscoplasticity
One or more property parameters prestored.
The ultrasound echo signal of acquisition is matched with ultrasound echo signal sample, to determine target ultrasound echo signal sample
This method can be any method for mode matching, and the embodiment of the present invention is not limited this.
In S201, optionally, those skilled in the art are referred to the present invention and implement disclosure, in preset time
In the range of, directly monitor and obtain ultrasound echo signal.Exemplary, an example of ultrasound echo signal is as shown in figure 3, be
Explanation directly perceived, the applicant show ultrasonic radio frequency data (indication range 60dB) with the log-compressed of its envelope amplitude.
Optionally, before S202 is performed, ultrasonic signal data set can also be first generated, including：
S203, the first moment t1 obtain ultrasonic echo data；
S204, ultrasonic echo data is loaded to the centrally stored communication mode data of communication mode data, generation ultrasound is returned
Ripple sample of signal；
S205, generation ultrasonic signal data set, wherein, it is each under vibrational excitation that communication mode data include dielectric sample
The spread state data at individual moment.
Specifically, according to the ultrasonic echo data at t1 moment and communication mode data set, at least one ultrasonic echo is determined
Sample of signal, according at least one ultrasound echo signal sample of determination, determine ultrasonic signal data set.
Optionally, ultrasonic echo data is obtained in the first moment t1, can is that medium is not adding caused by vibrational excitation
Ultrasonic echo data, or medium caused ultrasonic echo data under vibrational excitation.Exemplary, do not add vibrational excitation
One example of caused ultrasonic echo data is as shown in Figure 4.
Optionally, communication mode can include multiple spread states, i.e. communication mode can be included corresponding to multiple moment
Spread state.Thus, further alternative, communication mode data set can be stored with the propagating mode of the medium in the case where shearing wave excitation
Formula, such as communication mode data set include different viscoelastic different medium samples respectively in the case where at least one shears wave excitation,
In spread state data caused by one or more moment.
Specifically, it is by either carrying out actual test or emulation in body to imitative body in advance, to the given viscoplasticity of difference
The tissue of characteristic applies specific excitation, the spread state institute group that obtained follow-up Series ultrasonic signal at different moments is presented
The set of synthesis is stored as communication mode data set.
Optionally, ultrasound echo signal sample can determine according to communication mode.Exemplary, ultrasound echo signal sample
There can be one-to-one relation with communication mode, or ultrasound echo signal sample can correspond to multiple communication modes, or
Ultrasound echo signal sample has the corresponding relation of other forms with communication mode.Exemplary, ultrasonic echo data is concentrated can
With including at least the ultrasound echo signal sample as shown in Fig. 5 to Fig. 8, wherein, the ultrasound echo signal sample shown in Fig. 5 to Fig. 8
The communication mode data set generation stored in this ultrasonic echo data loading system illustrated respectively by Fig. 4.Equally, in order to directly perceived
Illustrate, the applicant also shows the ultrasonic radio frequency data of generation (indication range 60dB) with the log-compressed of its envelope amplitude
Further, in S202, by ultrasound echo signal and ultrasound echo signal sample matches, specifically, by shown in Fig. 3
Ultrasound echo signal can be searched or be compared with the ultrasound echo signal sample shown in Fig. 5 to Fig. 8.Exemplary,
The poor quadratic sum of ultrasound echo signal and ultrasound echo signal sample is searched or is asked when comparing, result of calculation minimum value is corresponding
Ultrasonic echo sample, be defined as the ultrasound echo signal sample matched with ultrasound echo signal, that is, determine the ultrasound shown in Fig. 3
Echo-signal and the ultrasound echo signal sample matches shown in Fig. 7.But the present invention is not intended to limit the method being compared.
Optionally, S201 can include, and obtain ultrasound echo signal of the medium under vibrational excitation in the second moment t2, i.e.,
T2 will be designated as at the time of obtaining ultrasound echo signal.
Optionally, S202 can include, by the ultrasound echo signal that the 3rd moment t3 is obtained and ultrasound echo signal sample
Matched, wherein, the 3rd moment t3 is more than or equal to the second moment t2.
Wherein, the t3 moment can overlap with the t2 moment, can also be later than the t2 moment.
Optionally, before S202, can also include：
S206, ultrasound echo signal and ultrasound echo signal sample be subjected to time alignment.
Further alternative, S206 can include：
S2061, the time difference is determined, wherein, the time difference is the second moment t2 and vibrational excitation initial time difference and second
Smaller value in moment t2 and the first moment t1 difference；
S2062, according to the time difference carry out time alignment.
Specifically, in S2061, when the excitation without friction of t1 moment, i.e., when vibrational excitation initial time is later than the t1 moment, second
Moment t2 and vibrational excitation initial time difference are smaller, and now the time difference is the second moment t2 and vibrational excitation initial time
Difference；Vibrational excitation is carved with as t1, i.e., when vibrational excitation initial time is earlier than the t1 moment, the second moment t2 and the first moment t1's
Difference is smaller, and now the time difference is the second moment t2 and the first moment t1 difference.
Exemplary in S2062, the note time difference is Δ t, when the t1 moment is earlier than the t2 moment, can be obtained the t3 moment
Ultrasound echo signal matched with the ultrasound echo signal sample of time Δt, further, now the t3 moment can be with t2
Moment overlaps；When being later than the t2 moment at the t1 moment, ultrasound echo signal and the ultrasound echo signal sample that the t3 moment can be obtained
This is matched, and further, the time difference that now the t3 moment is later than the t2 moment is Δ t.
Optionally, it before S202, can also include, ultrasound echo signal and ultrasound echo signal sample are subjected to space pair
Standard, wherein, spacial alignment can include：Border and the depth of medium are determined, carries out spacial alignment；It is or emerging based on default sense
Interesting depth carries out spacial alignment.
Optionally, in S201, one or more ultrasound echo signals can be obtained from the t2 moment, can in S202
So that one or more ultrasound echo signals to be matched with ultrasound echo signal sample.Wherein, by multiple ultrasound echo signals
After being matched with ultrasound echo signal sample, choose matching degree highest ultrasound echo signal sample and be used as determining medium
Viscoelastic ultrasound echo signal sample.It is used to be matched compared to a ultrasound echo signal is only obtained, obtains multiple super
Sound echo-signal simultaneously determines that the scheme of matching degree highest ultrasound echo signal sample can strengthen robustness.
The embodiment of the present invention only prestores communication mode data set, including one or more dielectric sample in system
Communication mode data.Those communication mode data be by the imitative body to one or more known viscoplasticity information or
Body applies specific excitation, by it is actual measure or emulation after, obtained follow-up Series ultrasonic echo-signal at different moments
The set of the spread state of presentation.When needing measurement, loaded with the ultrasonic echo data that a certain moment in this measurement obtains
The communication mode data generation ultrasonic signal of the dielectric sample of the known viscoplasticity information prestored in communication mode data set
Data set.The ultrasonic signal data set includes corresponding ultrasonic echo of one or more dielectric samples under current excitations
Sample sequence.The ultrasound echo signal subsequently obtained is matched with the ultrasound signal samples in ultrasonic signal data set, led to
Cross simple alignment similarity highest sample, you can obtain the viscoelastic measurement result of medium, avoid complex motion from estimating
Meter and characteristic point selection, and need storage and the information obtained less, realize that simply cost is relatively low.
The embodiment of the invention also discloses a kind of viscoelastic measurement apparatus 30 of medium, as shown in figure 13, including：
Probe 301, for obtaining detection ripple echo-signal of the medium under vibrational excitation；
Memory 302, for data storage collection, the dielectric sample that data set is stored with known viscoplasticity information swashs in vibration
Detection ripple echo signal samples under encouraging；
Processor 303, for detection ripple echo-signal to be matched with the detection ripple echo signal samples in data set, it is determined that
The viscoplasticity information of medium.
Wherein, probe 301 can be used for perform S101 or S201 the step of, processor 303 can be used for perform S102 or
The step of S202, the data set that memory 302 stores, associated description may be referred to the content disclosed in previous embodiment, herein
Repeat no more.
Optionally, detection ripple echo-signal of the medium that probe 301 obtains under vibrational excitation, can be that medium is being sheared
Ultrasound echo signal under wave excitation, the data set that memory 302 stores can be ultrasonic signal data set.
Optionally, probe 301 be can be also used for, and ultrasonic echo data is obtained in the first moment t1；
Processor 303 be can be also used for, and ultrasonic echo data is loaded into the centrally stored communication mode of communication mode data
Data, generate ultrasound echo signal sample；Generate ultrasonic signal data set.Wherein, communication mode data include known viscoplasticity
The spread state data at each moment of the dielectric sample of information under given vibrational excitation.
Optionally, probe 301 be can be also used for, and ultrasonic echo letter of the medium under vibrational excitation is obtained from the second moment t2
Number；
Processor can be also used for, by one or more of ultrasound echo signal obtained from the second moment t2 and ultrasound
Echo signal samples are matched, wherein, the second moment t2 is after vibrational excitation.
Optionally, processor 303 can be also used for：Before matching, by ultrasound echo signal and ultrasound echo signal sample
This progress time alignment and spacial alignment, wherein, time alignment is used to determine the 3rd moment t3.
Optionally, time alignment includes：The time difference is determined, the time difference is the second moment t2 and vibrational excitation initial time
Smaller value in difference and the second moment t2 and the first moment t1 difference, time alignment is carried out according to the time difference.
Optionally, spacial alignment includes：Border and the depth of medium are determined, carries out spacial alignment；Or, based on default depth
Degree carries out spacial alignment.
Optionally, communication mode data set can be cut at least one respectively including different viscoelastic different medium samples
Cut under wave excitation, in spread state data caused by one or more moment.
It should be noted that the measurement apparatus shown in Figure 13, can be used for performing in the measuring method shown in Fig. 1 and Fig. 2
Overall Steps, related content is described by the aforementioned embodiment, and here is omitted.
It should be appreciated that the invention is not limited in the flow and structure for being described above and being shown in the drawings,
And various modifications and changes can be being carried out without departing from the scope.The scope of the present invention is only limited by appended claim
System.
Claims (17)
- A kind of 1. viscoelastic measuring method of medium, it is characterised in that including：Obtain detection ripple echo-signal of the medium under vibrational excitation；The detection ripple echo-signal detection ripple echo signal samples centrally stored with data are matched, determine the medium Viscoplasticity information；Wherein, the data set is stored with detection ripple echo-signal of the dielectric sample of known viscoplasticity information under vibrational excitation Sample.
- 2. according to the method for claim 1, it is characterised in that the vibrational excitation is to shear wave excitation, the detection ripple Echo-signal is ultrasound echo signal, and the data set is ultrasonic signal data set.
- 3. according to the method for claim 2, it is characterised in that methods described also includes：Ultrasonic echo data is obtained in the first moment t1；By the centrally stored communication mode data of ultrasonic echo data loading communication mode data, ultrasound echo signal is generated Sample；Generate the ultrasonic signal data set；Wherein, dielectric sample of the communication mode data including known viscoplasticity information is each under given vibrational excitation The spread state data at moment.
- 4. according to the method for claim 3, it is characterised in that the acquisition medium is described super under vibrational excitation Sound echo-signal, including：The ultrasound echo signal of the medium under vibrational excitation is obtained from the second moment t2；The detection ripple echo signal samples that the detection ripple echo-signal is centrally stored with data match, including：Will be from One or more in the ultrasound echo signal that second moment t2 is obtained is matched with the ultrasound echo signal sample；Second moment t2 is after vibrational excitation.
- 5. method as claimed in claim 4, it is characterised in that methods described also includes：Before the matching, the ultrasound echo signal and the ultrasound echo signal sample are subjected to time alignment and space Alignment.
- 6. according to the method for claim 5, it is characterised in that the time alignment includes：Determine time difference, the time Difference is second moment t2 and the difference and the difference at second moment t2 and first moment t1 of vibrational excitation initial time In smaller value；Time alignment is carried out according to the time difference；The spacial alignment includes：Border and the depth of the medium are determined, carries out spacial alignment；Or, based on default depth Carry out spacial alignment.
- 7. according to the method for claim 3, it is characterised in that it is viscoelastic not that the communication mode data set includes difference With dielectric sample respectively at least one shear wave excitation under, in spread state data caused by one or more moment.
- 8. according to the method for claim 1, it is characterised in that：The vibrational excitation includes：One in the continuous or mechanical oscillation harmony radiation force pulses of pulse mode；Range of movement of the medium under the vibrational excitation is 0.01 micron to 10 millimeters；Motion frequency of the medium under the vibrational excitation is 20 hertz to 2500 hertz, and the duration is 50 microseconds to 1 Second.
- 9. the method as described in claim 1, it is characterised in that：The detection ripple echo-signal is ultrasound echo signal；The pulse of the vibrational excitation repeats occurrence frequency as 10 to 20000 hertz；The detection ripple echo-signal includes the 100 frames detection ripple echo data of at least continuous acquisition.
- 10. the method as described in claim 1, it is characterised in that the viscoplasticity includes at least one in viscosity and elasticity；When the viscoplasticity is sticky, the viscoplasticity information includes viscosity information or viscosity information and elastic information；When the viscoplasticity is elastic, the viscoplasticity information includes elastic information or viscosity information and elastic information；When the viscoplasticity is sticky and elastic, the viscoplasticity information includes viscosity information and elastic information.
- A kind of 11. viscoelastic measurement apparatus of medium, it is characterised in that including：Probe, for obtaining detection ripple echo-signal of the medium under vibrational excitation；Memory, for data storage collection, the data set is stored with the dielectric sample of known viscoplasticity information in vibrational excitation Under detection ripple echo signal samples；Processor, for detecting ripple echo-signal and the detection ripple echo signal samples in the data set by described Match somebody with somebody, determine the viscoplasticity information of the medium.
- 12. measurement apparatus according to claim 11, it is characterised in that the vibrational excitation is shearing wave excitation, described It is ultrasound echo signal to detect ripple echo-signal, and the data set is ultrasonic signal data set.
- 13. measurement apparatus according to claim 12, it is characterised in thatThe probe is additionally operable to, and ultrasonic echo data is obtained in the first moment t1；The processor is additionally operable to, and the ultrasonic echo data is loaded into the centrally stored communication mode number of communication mode data According to generation ultrasound echo signal sample；Generate the ultrasonic signal data set；Wherein, dielectric sample of the communication mode data including known viscoplasticity information is each under given vibrational excitation The spread state data at moment.
- 14. measurement apparatus according to claim 13, it is characterised in thatThe probe is additionally operable to, and the ultrasound echo signal of the medium under vibrational excitation is obtained from the second moment t2；The processor is additionally operable to, by one or more of ultrasound echo signal obtained from the second moment t2 and the ultrasound Echo signal samples are matched；Wherein, second moment t2 is after vibrational excitation.
- 15. measurement apparatus according to claim 14, it is characterised in that the processor is additionally operable to：In the matching Before, the ultrasound echo signal and the ultrasound echo signal sample are subjected to time alignment and spacial alignment.
- 16. measurement apparatus according to claim 15, it is characterised in that the time alignment includes：The time difference is determined, institute The time difference is stated as second moment t2 and the difference of vibrational excitation initial time and second moment t2 and first moment Smaller value in t1 difference；Time alignment is carried out according to the time difference；The spacial alignment includes：Border and the depth of the medium are determined, carries out spacial alignment；Or, based on default depth Carry out spacial alignment.
- 17. measurement apparatus according to claim 13, it is characterised in that the communication mode data set includes different viscoelastics Property different medium sample respectively at least one shear wave excitation under, in spread state number caused by one or more moment According to.
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| WO2019015396A1 (en) * | 2017-07-21 | 2019-01-24 | 无锡海斯凯尔医学技术有限公司 | Method and device for measuring viscoelasticity of medium |
| CN110045371A (en) * | 2019-04-28 | 2019-07-23 | 软通智慧科技有限公司 | A kind of identification method, device, equipment and storage medium |
| CN115856083A (en) * | 2023-02-27 | 2023-03-28 | 中国汽车技术研究中心有限公司 | Method, device, equipment and medium for testing performance of skin of automobile collision dummy |
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| CN107495986A (en) * | 2017-07-21 | 2017-12-22 | 无锡海斯凯尔医学技术有限公司 | The viscoelastic measuring method of medium and device |
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| CN104869912A (en) * | 2012-07-27 | 2015-08-26 | 小利兰·斯坦福大学理事会 | Manipulation of imaging probe during medical procedure |
| US20160274067A1 (en) * | 2015-03-17 | 2016-09-22 | Hemosonics, Llc | Determining Mechanical Properties via Ultrasound-Induced Resonance |
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