CN106768267A - One kind focuses on ultrasound focus sound pressure measurement instrument - Google Patents
One kind focuses on ultrasound focus sound pressure measurement instrument Download PDFInfo
- Publication number
- CN106768267A CN106768267A CN201510801527.9A CN201510801527A CN106768267A CN 106768267 A CN106768267 A CN 106768267A CN 201510801527 A CN201510801527 A CN 201510801527A CN 106768267 A CN106768267 A CN 106768267A
- Authority
- CN
- China
- Prior art keywords
- focus
- laser beam
- laser
- sound pressure
- pressure measurement
- 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.)
- Pending
Links
Abstract
The present invention provides a kind of focusing ultrasound focus sound pressure measurement instrument, including：Laser, transducer displacement adjusting means, tank, transducer to be measured, image collecting device, control process device, laser beam device for thinning and deflection angle amplifying device.The present invention conveniently can accurately measure the focusing ultrasound focus acoustic pressure that different transducers are produced, and measurement process will not be interfered to sound field.Laser beam device for thinning can make the light beam through focus area narrow, and be conducive to the accurate measurement of focus acoustic pressure.Deflection angle amplifying device can amplify deflection angle, when CCD camera focal point is nearer, can also make deflection distance maximum, and this is conducive to shortening the overall length of measuring system, save space.Simple structure of the present invention, effect is significant is with a wide range of applications ultrasound focus sound pressure measurement field is focused on.
Description
Technical field
It is more particularly to a kind of to focus on ultrasound focus sound pressure measurement instrument the invention belongs to focus on ultrasound focus sound pressure measurement field.
Background technology
The important indicator that ultrasound focus acoustic pressure is focused ultrasound field is focused on, it is measured can be by corresponding measuring apparatus come real
It is existing.
Ultrasound focus sound pressure measurement being focused at present and mainly using hydrophone, the basic ideas of the method measurement are first to be entered with hydrophone
Row 3-D scanning finds the particular location of acoustic pressure focus, then the geometric parameter for measuring and calculating focal regions is scanned to focusing acoustic field,
Then the acoustic pressure under focal point direct measurement total power.Mode based on the measurement of this method mainly has two kinds：Piezoelectric hydrophone
Method and fibre optic hydrophone method.Piezoelectric hydrophone method can accurately measure the focus acoustic pressure under low-power, and at high power
Focal point produces the nonlinear effects such as temperature rise, shock wave, cavitation and acoustic saturation to easily cause transducer sensitivity decline, or even damages
Bad hydrophone.Fibre optic hydrophone method is the main method for measuring high sound pressure at present, but needs to place Fibre Optical Sensor in measured place,
This easily makes measured place produce cavitation, causes measurement result inconsistent with actual acoustic pressure, and be easily damaged fibre optic hydrophone.
Focus sound pressure measurement mode most potential at present is to carry out non-intrusion type non intrusive measurement using laser deflection method.Based on sharp
Light deflecting method measurement focus on ultrasound focus acoustic pressure principle be：When the beam diameter directional light long less than sound wave is incided in medium,
Light is deflected in cyclically-varying because the effect of sound field causes medium refraction index, so as to according to the deflected trajectory of light come
The side-play amount of light is calculated, resettles light deflection distance with the relation of focus acoustic pressure to calculate focus acoustic pressure.
According to above measuring principle, with reference to the geometrical relationship of light deflection track (as shown in Figure 1), non-linear effect is not being considered
At once there is following relation：
Sin α=L/r
Tan α=d/S ≈ sin α
Wherein, α is light deflection angle, and L is effective sound field width, and r is the radius of curvature of light deflection, and d is deflection distance, S
It is screen to focal length.
When light is incident perpendicular to Acoustic Wave Propagation direction, the radius of curvature r of light deflection is：
R=n/ ▽ n
Wherein, n is medium refraction index, and ▽ n are refractive index gradient.
Under isothermy, acoustic pressure gradient ▽ P and medium refraction index gradient ▽ n are proportional：
▽ n=k ▽ P
Wherein,
The relation of focus acoustic pressure and deflection distance can be obtained by relation above formula：
It is measurable focusing ultrasound focus acoustic pressure using the relation of above-mentioned focus acoustic pressure and deflection distance, but due to the sound of focal point
Pressure gradient is only more bigger than the acoustic pressure gradient near focal point region, thus light beam in itself width to be likely to result in light deflection not notable, from
And cause the focus acoustic pressure being finally calculated inaccurate；And due to through light deflection angle very little after focus area, receiving
When the CCD camera focal point position of light spot image is not remote enough, the deflection distance of light can not reach maximum also can make measurement result not
Accurately.
The content of the invention
The shortcoming of prior art, ultrasound focus sound pressure measurement instrument is focused on it is an object of the invention to provide one kind in view of the above,
To realize one kind in use without interference with sound field, and can accurately measure the focusing ultrasound focus acoustic pressure of focus acoustic pressure
Measuring instrument.
In order to achieve the above objects and other related objects, the present invention provides a kind of focusing ultrasound focus sound pressure measurement instrument, including：
Laser, transducer displacement adjusting means, tank, transducer to be measured, image collecting device, control process device, and bag
Include at least one of laser beam device for thinning and deflection angle amplifying device；The laser is used to launch laser beam；The transducing
Device displacement adjustment device is used to fix and adjust the position of the transducer to be measured；The tank is used to hold de aerated water, described to treat
Transducer is surveyed to be placed in de aerated water；Described image harvester is used to receive through the light beam after focus, collection deflection light beam image；
The control process device is connected to the transducer displacement adjusting means and image collecting device, and for adjusting, control is to be measured to change
The movement of energy device, and calculated for light beam image treatment and acoustic pressure；After the laser beam device for thinning is positioned over laser, use
Attenuate in the laser beam for launching laser, make the lasing beam diameter by focus long less than sound wave；The deflection angle amplifies dress
Before storing is placed in image collecting device, for will amplify through the deflection angle of the laser beam of focus outgoing, make image collector
Put the laser beam for receiving deflection distance try one's best greatly, with cause image collecting device when focal point is nearer, light deflection distance
Can differentiate and accurately measure.
As a kind of preferred scheme of focusing ultrasound focus sound pressure measurement instrument of the invention, the focusing ultrasound focus sound pressure measurement
Instrument is provided with laser beam device for thinning, and after being positioned over laser, the laser beam for laser to be launched attenuates, and makes to pass through
The lasing beam diameter of focus is long less than sound wave.
As a kind of preferred scheme of focusing ultrasound focus sound pressure measurement instrument of the invention, the focusing ultrasound focus sound pressure measurement
Instrument is provided with deflection angle amplifying device, before being positioned over image collecting device, for the inclined of the laser beam by focus outgoing is passed through
Gyration amplifies, and the deflection distance of the laser beam that image collecting device receives is tried one's best greatly so that image collecting device is in defocus
When point is nearer, light deflection distance can be differentiated and accurately measured.
As a kind of preferred scheme of focusing ultrasound focus sound pressure measurement instrument of the invention, the focusing ultrasound focus sound pressure measurement
Instrument is provided with laser beam device for thinning and deflection angle amplifying device simultaneously, after the laser beam device for thinning is positioned over laser,
Laser beam for laser to be launched attenuates, and makes the lasing beam diameter by focus long less than sound wave；The deflection angle is amplified
Before device is positioned over image collecting device, for will amplify through the deflection angle of the laser beam of focus outgoing, make IMAQ
The deflection distance of the laser beam that device is received is tried one's best greatly so that image collecting device when focal point is nearer, light deflection distance
Can differentiate and accurately measure.
Used as a kind of preferred scheme of focusing ultrasound focus sound pressure measurement instrument of the invention, the laser beam device for thinning includes edge
The first optics convex lens and the second optics convex lens that light path is sequentially arranged, the focus of first optics convex lens and described
The focus of two optics convex lens overlaps, also, first optics convex lens Jiao of the focal length more than second optics convex lens
Away from.
Further, the diameter before and after the laser beam refinement meets formula D1/D2=f1/f2, wherein, D1, D2 are respectively carefully
Lasing beam diameter before and after changing, f1, f2 are respectively the focal length of the first optics convex lens and the second optics convex lens.
Used as a kind of preferred scheme of focusing ultrasound focus sound pressure measurement instrument of the invention, the deflection angle amplifying device includes one
Individual or more than two divergent lenses, for dissipating laser beam, increase the deflection angle of laser beam.
Used as a kind of preferred scheme of focusing ultrasound focus sound pressure measurement instrument of the invention, the control process device includes calculating
One kind in machine and intelligent movable equipment.
Used as a kind of preferred scheme of focusing ultrasound focus sound pressure measurement instrument of the invention, described image harvester includes CCD
Camera.
Used as a kind of preferred scheme of focusing ultrasound focus sound pressure measurement instrument of the invention, the bottom of gullet is provided with sound absorption
Material.
As described above, focusing ultrasound focus sound pressure measurement instrument of the invention, has the advantages that：The present invention can be convenient accurate
True measures the focusing ultrasound focus acoustic pressure that different transducers are produced, and measurement process will not be interfered to sound field.Laser beam is thin
Makeup is put and the light beam through focus area can be made to narrow, and is conducive to the accurate measurement of focus acoustic pressure.Deflection angle amplifying device can be by partially
Gyration amplifies, and when CCD camera focal point is nearer, can also make deflection distance maximum, and this is conducive to shortening the total of measuring system
It is long, save space.Simple structure of the present invention, effect is significant has a wide range of applications ultrasound focus sound pressure measurement field is focused on
Prospect.
Brief description of the drawings
Fig. 1 is shown as laser beam deflection track schematic diagram.
Fig. 2 is shown as the system structure diagram of focusing ultrasound focus sound pressure measurement instrument of the invention.
Fig. 3 is shown as the laser beam device for thinning principle schematic of focusing ultrasound focus sound pressure measurement instrument of the invention.
Fig. 4 is shown as the deflection angle amplifying device principle schematic of focusing ultrasound focus sound pressure measurement instrument of the invention.
Fig. 5 and Fig. 6 are respectively indicated as the system architecture of the different embodiments of two kinds of focusing ultrasound focus sound pressure measurement instrument of the invention
Schematic diagram.
Component label instructions
1 laser
2 laser beams
3 transducer displacement adjusting meanss
4 transducers to be measured
5 focus on ultrasound focus
6 tanks
7 acoustic absorption materials
8 de aerated waters
9 image collecting devices
10 control process devices
11 laser beam device for thinning
12 deflection angle amplifying devices
Specific embodiment
Embodiments of the present invention are illustrated below by way of specific instantiation, those skilled in the art can be as disclosed by this specification
Content understand other advantages of the invention and effect easily.The present invention can also add by way of a different and different embodiment
To implement or apply, the various details in this specification can also be based on different viewpoints and application, without departing from essence of the invention
Various modifications or alterations are carried out under god.
Refer to Fig. 2~Fig. 6.It should be noted that the diagram provided in the present embodiment only illustrates of the invention in a schematic way
Basic conception, component count, shape when only display is with relevant component in the present invention rather than according to actual implementation in illustrating then and
Size is drawn, and it is actual when the implementing kenel of each component, quantity and ratio can be a kind of random change, and its assembly layout type
State is likely to increasingly complex.
Embodiment 1
As shown in Fig. 2 the present embodiment provides a kind of focusing ultrasound focus sound pressure measurement instrument, including：Laser 1, transducer
Displacement adjustment device 3, tank 6, transducer to be measured 4, image collecting device 9, control process device 10, laser beam refinement dress
Put 11 and deflection angle amplifying device 12.
The laser 1 is used to launch laser beam 2, and the initial diameter of the laser beam 2 is D1.
The transducer displacement adjusting means 3, the position for fixing and adjusting the transducer to be measured 4, to adjust described treating
Survey the focus 5 of transducer 4.Specifically, the transducer displacement adjusting means 3 can adjust the upper of the transducer to be measured 4
Lower position and right position.
The tank 6 is used to hold de aerated water 8, and its bottom is provided with acoustic absorption material 7, and the transducer to be measured 4 is placed in degassing
In water 8.The framework of the tank 6 from being laser transmissivity material higher, such as glass, transparent polymer, but not
It is limited to example recited herein.
Described image harvester 9 is used to receive through the light beam after focus 5, collection deflection light beam image.In the present embodiment,
It is CCD camera that described image harvester 9 is selected, of course, it is possible to the image capture device of other species is selected according to demand,
It is not limited to example recited herein.
The control process device 10 is connected to the transducer displacement adjusting means 3 and image collecting device 9, for adjusting
The movement of transducer to be measured 4 is controlled, and is calculated for light beam image treatment and acoustic pressure.In the present embodiment, at the control
It is computer or intelligent movable equipment, such as mobile phone, panel computer that reason device 10 can be selected.
As shown in figure 3, after the laser beam device for thinning 11 is positioned over laser 1, for the laser for launching laser 1
Beam 2 attenuates, and makes the diameter of laser beam 2 by focus 5 long less than sound wave.In the present embodiment, the laser beam device for thinning
11 include the first optics convex lens and the second optics convex lens that are sequentially arranged along light path, the focus of first optics convex lens
Focus with second optics convex lens overlaps, also, the focal length of first optics convex lens is more than second optical male
The focal length of lens.Diameter before and after the laser beam 2 is refined meets formula D1/D2=f1/f2, wherein, D1, D2 are respectively carefully
The diameter of laser beam 2 before and after changing, f1, f2 are respectively the focal length of the first optics convex lens and the second optics convex lens.It is actual to answer
In, under conditions of technique productions are met, can be according to the first optics convex lens, the focal length ratio of the second optics convex lens is obtained
The light pencil that must be wanted.
As shown in figure 4, before the deflection angle amplifying device 12 is positioned over image collecting device 9, for that will go out through focus 5
The deflection angle of the laser beam 2 penetrated amplifies, make the laser beam 2 that image collecting device 9 receives deflection distance try one's best greatly, with
So that image collecting device 9 is when focal point 5 is nearer, light deflection distance can be differentiated and accurately measured.As an example, institute
Stating deflection angle amplifying device 12 includes one or more divergent lens, for dissipating laser beam 2, makes laser beam
2 deflection angle increase.In the present embodiment, the deflection angle amplifying device 12 includes a divergent lens, of course, it is possible to
Different divergent lens combinations are selected according to demand, however it is not limited to example recited herein.
The present embodiment also provides a kind of measuring method for focusing on ultrasound focus sound pressure measurement instrument, including step：
Step 1), transducer to be measured 4 is installed in place on displacement regulating device, the appropriate de aerated water 8 of injection, floods and treats in tank 6
Survey transducer 4.
Step 2), turn on the power, make laser 1, transducer, CCD camera, computer capacity normal work.
Step 3), operation computer controls adjust the position of transducer, make laser beam 2 just through focus 5, are formed symmetrical
Oval hot spot and the position of transducer to be measured 4 is fixed when size is maximum.
Step 4), light spot image is gathered by CCD camera and computer is uploaded to.
Step 5), light spot image is processed, the relation according to focus acoustic pressure and deflection distance obtains sound pressure level.
Embodiment 2
As shown in figure 5, the present embodiment provides a kind of focusing ultrasound focus sound pressure measurement instrument, including：Laser 1, transducer
The refinement of displacement adjustment device 3, tank 6, transducer to be measured 4, image collecting device 9, control process device 10 and laser beam
Device 11.
The laser 1 is used to launch laser beam 2, and the initial diameter of the laser beam 2 is D1.
The transducer displacement adjusting means 3, the position for fixing and adjusting the transducer to be measured 4, to adjust described treating
Survey the focus 5 of transducer 4.Specifically, the transducer displacement adjusting means 3 can adjust the upper of the transducer to be measured 4
Lower position and right position.
The tank 6 is used to hold de aerated water 8, and its bottom is provided with acoustic absorption material 7, and the transducer to be measured 4 is placed in degassing
In water 8.The framework of the tank 6 from being laser transmissivity material higher, such as glass, transparent polymer, but not
It is limited to example recited herein.
Described image harvester 9 is used to receive through the light beam after focus 5, collection deflection light beam image.In the present embodiment,
It is CCD camera that described image harvester 9 is selected, of course, it is possible to the image capture device of other species is selected according to demand,
It is not limited to example recited herein.
The control process device 10 is connected to the transducer displacement adjusting means 3 and image collecting device 9, for adjusting
The movement of transducer to be measured 4 is controlled, and is calculated for light beam image treatment and acoustic pressure.In the present embodiment, at the control
It is computer or intelligent movable equipment, such as mobile phone, panel computer that reason device 10 can be selected.
As shown in figure 3, after the laser beam device for thinning 11 is positioned over laser 1, for the laser for launching laser 1
Beam 2 attenuates, and makes the diameter of laser beam 2 by focus 5 long less than sound wave.In the present embodiment, the laser beam device for thinning
11 include the first optics convex lens and the second optics convex lens that are sequentially arranged along light path, the focus of first optics convex lens
Focus with second optics convex lens overlaps, also, the focal length of first optics convex lens is more than second optical male
The focal length of lens.Diameter before and after the laser beam 2 is refined meets formula D1/D2=f1/f2, wherein, D1, D2 are respectively carefully
The diameter of laser beam 2 before and after changing, f1, f2 are respectively the focal length of the first optics convex lens and the second optics convex lens.It is actual to answer
In, under conditions of technique productions are met, can be according to the first optics convex lens, the focal length ratio of the second optics convex lens is obtained
The light pencil that must be wanted.
Embodiment 3
As shown in fig. 6, the present embodiment provides a kind of focusing ultrasound focus sound pressure measurement instrument, including：Laser 1, transducer
Displacement adjustment device 3, tank 6, transducer to be measured 4, image collecting device 9, control process device 10 and deflection angle amplify dress
Put 12.
The laser 1 is used to launch laser beam 2, and the initial diameter of the laser beam 2 is D1.
The transducer displacement adjusting means 3, the position for fixing and adjusting the transducer to be measured 4, to adjust described treating
Survey the focus 5 of transducer 4.Specifically, the transducer displacement adjusting means 3 can adjust the upper of the transducer to be measured 4
Lower position and right position.
The tank 6 is used to hold de aerated water 8, and its bottom is provided with acoustic absorption material 7, and the transducer to be measured 4 is placed in degassing
In water 8.The framework of the tank 6 from being laser transmissivity material higher, such as glass, transparent polymer, but not
It is limited to example recited herein.
Described image harvester 9 is used to receive through the light beam after focus 5, collection deflection light beam image.In the present embodiment,
It is CCD camera that described image harvester 9 is selected, of course, it is possible to the image capture device of other species is selected according to demand,
It is not limited to example recited herein.
The control process device 10 is connected to the transducer displacement adjusting means 3 and image collecting device 9, for adjusting
The movement of transducer to be measured 4 is controlled, and is calculated for light beam image treatment and acoustic pressure.In the present embodiment, at the control
It is computer or intelligent movable equipment, such as mobile phone, panel computer that reason device 10 can be selected.
As shown in figure 4, before the deflection angle amplifying device 12 is positioned over image collecting device 9, for that will go out through focus 5
The deflection angle of the laser beam 2 penetrated amplifies, make the laser beam 2 that image collecting device 9 receives deflection distance try one's best greatly, with
So that image collecting device 9 is when focal point 5 is nearer, light deflection distance can be differentiated and accurately measured.As an example, institute
Stating deflection angle amplifying device 12 includes one or more divergent lens, for dissipating laser beam 2, makes laser beam
2 deflection angle increase.In the present embodiment, the deflection angle amplifying device 12 includes a divergent lens, of course, it is possible to
Different divergent lens combinations are selected according to demand, however it is not limited to example recited herein.
As described above, focusing ultrasound focus sound pressure measurement instrument of the invention, has the advantages that：The present invention can be convenient accurate
True measures the focusing ultrasound focus acoustic pressure that different transducers are produced, and measurement process will not be interfered to sound field.Laser beam is thin
Makeup puts 11 can make the light beam through focus area narrow, and be conducive to the accurate measurement of focus acoustic pressure.Deflection angle amplifying device 12
Deflection angle can be amplified, when CCD camera focal point is nearer, can also make deflection distance maximum, this is conducive to shortening measurement system
The overall length of system, save space.Simple structure of the present invention, effect is significant has extensively ultrasound focus sound pressure measurement field is focused on
Application prospect.So, the present invention effectively overcomes various shortcoming of the prior art and has high industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any to be familiar with this skill
The personage of art all can carry out modifications and changes under without prejudice to spirit and scope of the invention to above-described embodiment.Therefore, such as
Those of ordinary skill in the art completed under without departing from disclosed spirit and technological thought all etc.
Effect modifications and changes, should be covered by claim of the invention.
Claims (10)
1. it is a kind of to focus on ultrasound focus sound pressure measurement instrument, it is characterised in that including：Laser, transducer displacement adjusting means, water
Groove, transducer to be measured, image collecting device, control process device, and amplify including laser beam device for thinning and deflection angle
At least one of device；The laser is used to launch laser beam；The transducer displacement adjusting means is used to fix and adjust
Save the position of the transducer to be measured；The tank is used to hold de aerated water, and the transducer to be measured is placed in de aerated water；Institute
State image collecting device for receive through the light beam after focus, collection deflects light beam image；The control process device connection
In the transducer displacement adjusting means and image collecting device, for adjusting the movement of control transducer to be measured, and it is used for
Light beam image treatment and acoustic pressure are calculated；After the laser beam device for thinning is positioned over laser, for laser to be launched
Laser beam attenuate, make long less than sound wave by the lasing beam diameter of focus；The deflection angle amplifying device is positioned over image and adopts
Before acquisition means, the deflection angle for the laser beam will pass through focus outgoing amplifies, and makes what image collecting device received to swash
The deflection distance of light beam is tried one's best greatly, and to cause image collecting device when focal point is nearer, light deflection distance can be differentiated simultaneously
Accurately measure.
It is 2. according to claim 1 to focus on ultrasound focus sound pressure measurement instrument, it is characterised in that：The focusing ultrasound focus acoustic pressure
Measuring instrument is provided with laser beam device for thinning, and after being positioned over laser, the laser beam for laser to be launched attenuates,
Make the lasing beam diameter by focus long less than sound wave.
It is 3. according to claim 1 to focus on ultrasound focus sound pressure measurement instrument, it is characterised in that：The focusing ultrasound focus acoustic pressure
Measuring instrument is provided with deflection angle amplifying device, before being positioned over image collecting device, for the laser by focus outgoing is passed through
The deflection angle of beam amplifies, and the deflection distance of the laser beam that image collecting device receives is tried one's best greatly so that image collector
Put when focal point is nearer, light deflection distance can be differentiated and accurately measured.
It is 4. according to claim 1 to focus on ultrasound focus sound pressure measurement instrument, it is characterised in that：The focusing ultrasound focus acoustic pressure
Measuring instrument is provided with laser beam device for thinning and deflection angle amplifying device simultaneously, and the laser beam device for thinning is positioned over laser
After device, the laser beam for laser to be launched attenuates, and makes the lasing beam diameter by focus long less than sound wave；It is described inclined
Before corner amplifying device is positioned over image collecting device, for will amplify through the deflection angle of the laser beam of focus outgoing,
The deflection distance of the laser beam that image collecting device receives is tried one's best greatly so that image collecting device when focal point is nearer,
Light deflection distance can be differentiated and accurately measured.
It is 5. according to claim 1 to focus on ultrasound focus sound pressure measurement instrument, it is characterised in that：The laser beam device for thinning bag
Include the first optics convex lens and the second optics convex lens being sequentially arranged along light path, the focus of first optics convex lens with
The focus of second optics convex lens overlaps, also, the focal length of first optics convex lens is more than second optical male
The focal length of lens.
It is 6. according to claim 5 to focus on ultrasound focus sound pressure measurement instrument, it is characterised in that：Before and after the laser beam refinement
Diameter meets formula D1/D2=f1/f2, wherein, D1, D2 are respectively the lasing beam diameter before and after refinement, f1, f2 difference
It is the first optics convex lens and the focal length of the second optics convex lens.
It is 7. according to claim 1 to focus on ultrasound focus sound pressure measurement instrument, it is characterised in that：The deflection angle amplifying device bag
One or more divergent lens is included, for dissipating laser beam, increases the deflection angle of laser beam.
It is 8. according to claim 1 to focus on ultrasound focus sound pressure measurement instrument, it is characterised in that：The control process device includes
One kind in computer and intelligent movable equipment.
It is 9. according to claim 1 to focus on ultrasound focus sound pressure measurement instrument, it is characterised in that：Described image harvester includes
CCD camera.
It is 10. according to claim 1 to focus on ultrasound focus sound pressure measurement instrument, it is characterised in that：The bottom of gullet is provided with
Acoustic absorption material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510801527.9A CN106768267A (en) | 2015-11-19 | 2015-11-19 | One kind focuses on ultrasound focus sound pressure measurement instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510801527.9A CN106768267A (en) | 2015-11-19 | 2015-11-19 | One kind focuses on ultrasound focus sound pressure measurement instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106768267A true CN106768267A (en) | 2017-05-31 |
Family
ID=58916417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510801527.9A Pending CN106768267A (en) | 2015-11-19 | 2015-11-19 | One kind focuses on ultrasound focus sound pressure measurement instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106768267A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709623A (en) * | 2018-04-26 | 2018-10-26 | 上海交通大学 | The production method of optoacoustic lens focuses ultrasonic device and focuses ultrasonic measurement system |
| CN108852296A (en) * | 2018-05-17 | 2018-11-23 | 华中科技大学 | A kind of tunable optical acoustic transducer means and preparation method thereof |
| CN110954207A (en) * | 2019-11-15 | 2020-04-03 | 重庆医科大学 | Detection device and detection method for focused ultrasound focus sound wave structure |
| CN111505660A (en) * | 2020-06-03 | 2020-08-07 | 天津大学 | Acoustic detection device and sound field detection system |
| CN114460012A (en) * | 2022-01-21 | 2022-05-10 | 山东大学 | Ultrasonic intensity enhancing method suitable for underwater environment laser ultrasonic material detection and application |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140350439A1 (en) * | 2013-05-23 | 2014-11-27 | General Electric Company | System and method for focusing of high intensity focused ultrasound based on magnetic resonance - acoustic radiation force imaging feedback |
| CN104297089A (en) * | 2014-10-15 | 2015-01-21 | 中国矿业大学 | Microcosmic frictional wear performance testing device |
| CN205157037U (en) * | 2015-11-19 | 2016-04-13 | 重庆医科大学 | Focus supersound focus acoustic pressure measuring instrument |
-
2015
- 2015-11-19 CN CN201510801527.9A patent/CN106768267A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140350439A1 (en) * | 2013-05-23 | 2014-11-27 | General Electric Company | System and method for focusing of high intensity focused ultrasound based on magnetic resonance - acoustic radiation force imaging feedback |
| CN104297089A (en) * | 2014-10-15 | 2015-01-21 | 中国矿业大学 | Microcosmic frictional wear performance testing device |
| CN205157037U (en) * | 2015-11-19 | 2016-04-13 | 重庆医科大学 | Focus supersound focus acoustic pressure measuring instrument |
Non-Patent Citations (2)
| Title |
|---|
| 周慧婷 等: "基于声光折射的聚焦超声焦点声压检测", 《光学学报》 * |
| 朱昊 等: "测微光度计拆装研讨实验的设计", 《实验技术与管理》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709623A (en) * | 2018-04-26 | 2018-10-26 | 上海交通大学 | The production method of optoacoustic lens focuses ultrasonic device and focuses ultrasonic measurement system |
| CN108852296A (en) * | 2018-05-17 | 2018-11-23 | 华中科技大学 | A kind of tunable optical acoustic transducer means and preparation method thereof |
| CN108852296B (en) * | 2018-05-17 | 2020-05-19 | 华中科技大学 | Adjustable optical acoustic transducer device and preparation method thereof |
| CN110954207A (en) * | 2019-11-15 | 2020-04-03 | 重庆医科大学 | Detection device and detection method for focused ultrasound focus sound wave structure |
| CN111505660A (en) * | 2020-06-03 | 2020-08-07 | 天津大学 | Acoustic detection device and sound field detection system |
| CN114460012A (en) * | 2022-01-21 | 2022-05-10 | 山东大学 | Ultrasonic intensity enhancing method suitable for underwater environment laser ultrasonic material detection and application |
| CN114460012B (en) * | 2022-01-21 | 2023-11-14 | 山东大学 | Ultrasonic wave intensity enhancement method suitable for underwater environment laser ultrasonic material detection and application |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106768267A (en) | One kind focuses on ultrasound focus sound pressure measurement instrument | |
| CN205157037U (en) | Focus supersound focus acoustic pressure measuring instrument | |
| US11686823B2 (en) | LIDAR receiver using a waveguide and an aperture | |
| CN104198054B (en) | Packaged type high-power laser beams Wavefront measuring apparatus and its measuring method | |
| CN102974936B (en) | System for laser focus positioning and method for positioning material on laser focus point | |
| US8637803B2 (en) | Method and apparatus for measuring the optical forces acting on a particle | |
| CN102818759B (en) | On-line measurement system and method for shape parameters of wet particles based on light scattering | |
| CN204831220U (en) | Calcirm -fluoride optical flat two sides depth of parallelism high accuracy testing arrangement | |
| CN102566048A (en) | Astigmatism-based sample axial drift compensating method and device | |
| CN102540447A (en) | Trapping and detecting multiplexed scanning optical-tweezers system | |
| CN104501946B (en) | System and method for measuring high-strength beam | |
| CN101614530B (en) | Novel real-time detection method and device of beam displacement drift and angle drift | |
| CN106052585A (en) | Surface shape detection device and detection method | |
| CN202693451U (en) | Wet particle shape parameter online measuring system based on light scattering | |
| CN102914373A (en) | Hartmann wave-front sensor based on micro-cylindrical lens array | |
| CN104807818B (en) | Three-dimensional static and dynamic micro measurement system and method | |
| CN108692820B (en) | A kind of Wavefront measuring apparatus and method | |
| CN206095586U (en) | Novel optic fibre refraction index profile measures device | |
| CN110986836B (en) | High-precision roughness measuring device based on annular core optical fiber | |
| CN104792733B (en) | Quick calibration module and application | |
| CN207923419U (en) | A kind of parallel optical detection device and system | |
| CN110361074B (en) | Photoelectric liquid level detection device | |
| CN204101461U (en) | Raman probe and can the Raman signal sniffer of auto-focusing | |
| CN110933279A (en) | Method for determining relative positions of microlens array, relay lens and image sensor | |
| CN107748004A (en) | A kind of non-contact ultrasonic sound pressure detection device and method |
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 |