CN205537945U - Ultrasonic sensor array based on liquid lens - Google Patents
Ultrasonic sensor array based on liquid lens Download PDFInfo
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- CN205537945U CN205537945U CN201620233364.9U CN201620233364U CN205537945U CN 205537945 U CN205537945 U CN 205537945U CN 201620233364 U CN201620233364 U CN 201620233364U CN 205537945 U CN205537945 U CN 205537945U
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- liquid lens
- ultrasonic
- ultrasonic sensor
- sensor array
- liquid
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Transducers For Ultrasonic Waves (AREA)
Abstract
The utility model discloses an ultrasonic sensor array based on liquid lens, it is surveyed ultrasonic signal in can being applied to systems such as optoacoustic, microwave heat sound and ultrasonic imaging. The utility model discloses processing is simple, and low cost is especially adapted in batch production. List liquid lens's in liquid lens's the ultrasonic sensor array ultrasonic sensor comprises liquid lens and supersound sensing unit, adjusts liquid lens's cambered surface through the control to liquid volume in the liquid lens cavity, and then reaches ultrasonic probe's focus or expand and restraint the purpose. Compare with traditional ultrasonic sensor, the utility model discloses an ultrasonic sensor can be in the course of the work to ultrasonic probe's focus with expand shu xingneng and go on adjusting in real time to the messenger system reaches the best working effect. This ultrasonic sensor array can circularize its preparation according to the application demand of reality, arrays such as sphere, simultaneous processing low cost, especially adapted industrialization.
Description
Technical field
This utility model belongs to acquisition of signal field, specifically, relates to a kind of based on liquid lens super
Acoustic sensor array.
Background technology
Ultrasonic sensor is a kind of application acquisition of signal device widely, and it is available in ultra sonic imaging
In ultrasonic transmitting and reception it can also be used to photoacoustic imaging and thermal acoustic imaging field are used for high-frequency ultrasonic
The detection of signal.Ultrasonic sensor can be divided into piezoelectric-type ultrasonic sensor and condenser type from technological means
Sonac two kinds.Piezoelectric-type ultrasonic sensor is that the piezoelectric property utilizing the piezoelectric in sensor is incited somebody to action
Ultrasonic signal is converted to the signal of telecommunication.General piezoelectric mainly has piezoelectric ceramics, PVDF, piezoelectric membrane etc.,
The size of piezoelectric piezoelectric modulus determines the sensitivity of sonac.Capacitive ultrasonic sensor is profit
With the vibration change of device capacitance value under ul-trasonic irradiation, acoustical signal is converted to the signal of telecommunication.But at present doctor
The application learning imaging field piezoelectric-type ultrasonic sensor is more universal and ripe, and these sonacs have non-poly-
Jiao divides with focusing probe；Non-focusing probe has certain aperture value, can be to the ultrasound wave in certain area
Signal detects or launches, and focusing probe by adding the methods such as ultrasonic lens by ultrasound wave at probe distal end
It is focused, can detect with the ultrasonic signal in focusing, or the ultrasound wave launched can be in focus position
Put and be focused.
No matter it is focusing probe or non-focusing probe, its performance parameter such as focal length, aperture after once machining
The parameters such as angle are also generally all relatively fixed, and the application of the most same probe is affected by its preset parameter
And be relatively limited.Focusing probe is had to pass through can load the ultrasonic lens of replacing in its Front-end Design on market
Reach the purpose to probe performance Parameters Transformation, and then realize same probe and can obtain in more field
Application.But this regular replacing is as easy as rolling off a log causes damage to probe, reduce the service life of probe；
For detector array, this replacing is the most loaded down with trivial details, adds what detection system used
Complexity.
Utility model content
The purpose of this utility model is to provide a kind of sensor array based on liquid lens technology, solves
The parameter that existing sensor technology exists fixes, can not the shortcoming of flexible.This utility model can be quick
Effectively to sonac receive and emitting performance be adjusted, and improve on this basis ultra sonic imaging,
The imaging performance of the system such as photoacoustic imaging, thermal acoustic imaging；Ultrasonic sensor array is by each sensing unit
Front-end Design liquid lens, and the cambered surface of lens is adjusted to its body cavity injecting fluid by syringe pump
Joint, reaches the angular aperture to supersonic array detector with this or purpose that focusing performance is optimized, it is not necessary to
Change sonde configuration and just neatly the angular aperture of ultrasonic array probe or focal spot can be adjusted control.
To achieve these goals, the technical solution adopted in the utility model is as follows:
A kind of ultrasonic sensor array based on liquid lens, including more than one liquid lens sonac
With the array bracket of fixing liquid lens sonac, each described liquid lens sonac includes liquid
Body lens, ultrasonic sensing unit, a liquid lens correspond to a ultrasonic sensing unit, liquid lens with
The ultrasonic probe of ultrasonic sensing unit connects；Described liquid lens include the cavity that formed by bottom, sidewall and
The cambered surface formed by the thin film being bonded in sidewall opening, and be provided with needle tubing by importing after cavity and ft connection/
Tapping.Make the cambered surface of liquid lens produce deformation by importing/tapping to realize ultrasound wave is carried out
The function focused on or expand, is then received ultrasound wave or to external emission ultrasound wave by ultrasonic sensing unit.When
When importing sufficient liquid in liquid lens cavity, thin film meeting projection and then the angular aperture of raising ultrasonic probe,
Increase the single ultrasonic probe investigative range to ultrasound wave；Have in limited time when importing liquid in lens cavity, thin
Film can cave in and then ultrasonic probe can be produced focusing effect, forms focused ultrasonic sensor array.
Specifically, the bottom external connection of described ultrasonic probe and liquid lens, ultrasonic probe for receive or
Launch ultrasonic signal, and acoustical signal is converted to the signal of telecommunication or converts electrical signals to ultrasonic signal, and liquid
Size bottom body lens cavity is consistent with the search coverage size of ultrasonic probe.
As preferably, the thickness of described thin film is 10 μm-500 μm.
Further, described liquid lens uses polymeric material to form, specially polydimethylsiloxanes
Alkane, this polydimethylsiloxane uses elastomer silicone base and firming agent according to the ratio mixing manufacture of 10:1
Form.
Further, described ultrasonic probe is the senser element of detecting ultrasonic ripple signal, surpassing for piezoelectric type
Sound sensor probe, or capacitive ultrasound transducer probe.
In order to ensure effective transmission of ultrasonic signal, the ultrasonic probe of described ultrasonic sensing unit is by ultrasonic
Couplant is connected realization with liquid lens and is in sealing contact.
Yet further, each described liquid lens sidewall arranging two needle tubings, a needle tubing passes through flexible pipe
Connecting and have syringe pump, another root needle tubing has liquid collection receptacle by hose connection.Syringe pump is for liquid
In the cavity of lens, liquid volume is controlled, and then reaches the purpose being adjusted the cambered surface of liquid lens；
Flexible pipe is used for that the liquid in syringe pump imports to export to liquids recovery in needle tubing or by the liquid in needle tubing to be held
In device.
As preferably, the exit of described liquid collection receptacle arranges valve.For liquid conveying is controlled
System.
It addition, described array bracket includes that more than one support, each support include groove and and groove-bottom
The circular hole slot of portion's connection, this groove is used for fixing liquid lens, and circular hole slot is used for fixing ultrasonic sensing list
Unit.Described array is that line style is annular or spherical, when for line style, and the end of each support and another support
End connect composition line style array bracket；When for annular, institute's standoff both ends head and the tail sequentially connect
Connecing the array bracket of composition annular, the opening of the groove of each support points to the center of array bracket；When for ball
During shape, all supports link together and form spherical array bracket, and the opening of the groove of each support is equal
Point to the center of ball array support.
The beneficial effects of the utility model are:
This utility model provides a kind of ultrasonic sensor array system based on liquid lens technology, this system
Liquid lens is set in the front end of each ultrasonic sensing unit, by syringe pump to liquid in liquid lens cavity
The control of total amount reaches the regulation of the cambered surface to thin film, and then realizes the optimization mesh to ultrasonic probe parameters,acoustic
's.This utility model can optimize and improve the angular aperture of ultrasonic probe easily, adds ultrasonic probe
Investigative range；For focused ultrasonic transducer, this utility model can the size of focal spot effectively optimize
Regulation, improves the acquisition of signal ability of system.This utility model solves the ginseng that existing sensor technology exists
Number is fixing, can not the shortcoming of flexible, at acquisition of signal, ultra sonic imaging, photoacoustic imaging and thermal acoustic imaging
Huge application prospect is had in field.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of this utility model-embodiment 1.
Fig. 2 is the structural representation that this utility model-embodiment 1 makes the grinding tool of liquid lens.
Fig. 3 is the structural representation after this utility model-embodiment 1 polydimethylsiloxane solidifies in grinding tool
Figure.
Fig. 4 is the structural representation of this utility model-embodiment 1 liquid lens.
Fig. 5 is the structural representation of this utility model-embodiment 1 liquid lens injecting fluid rear arc.
Fig. 6 is the structural representation of this utility model-embodiment 1 liquid lens ultrasonic sensing unit.
Fig. 7 is the vertical view of the array bracket of this utility model-embodiment 2 four array liquid lens sonac
Figure.
Fig. 8 is the side-looking of the array bracket of this utility model-embodiment 2 four array liquid lens sonac
Figure.
Fig. 9 is the structural representation of this utility model-embodiment 2 four array liquid lens sonac.
Wherein, the parts that in figure, reference is corresponding are entitled:
1-liquid lens, 2-ultrasonic probe, 3-liquid collection receptacle, 4-syringe pump, 5-array bracket, 6-
Needle tubing, 7-flexible pipe, 8-valve, 9-grinding tool, 10-circle hole slot.
Detailed description of the invention
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.Embodiment party of the present utility model
Formula includes but not limited to the following example.
This utility model provides a kind of ultrasonic sensor array system based on liquid lens technology, it is possible to according to
The actual application scenarios of system, is fast and effeciently optimized regulation to the parameters,acoustic of ultrasonic sensing unit, makes
Whole system reaches optimal duty.This utility model first passes through syringe pump in liquid lens cavity
Injecting fluid, the injection volume of liquid decides the arc shape of lens surface thin polymer film, thus just changes
The acoustic transmission parameter of probe.This utility model can for different application scenarios to probe angular aperture,
The parameters such as focusing performance are optimized regulation, make sensor array system reach optimal working effect.
Embodiment 1
As it is shown in figure 1, a kind of ultrasonic sensor array based on liquid lens, comprise line style sonac
Array, each array all include liquid lens 1, ultrasonic probe 2, liquid collection receptacle 3, syringe pump 4,
Support, needle tubing 6, flexible pipe 7, valve 8；Wherein, liquid lens 1 includes bottom and is connected with bottom surrounding
And with bottom admittedly one sidewall, between bottom and sidewall, then form a cavity with opening, opening
It is bonded thin film at Kou and forms a cavity sealed.The forward end of ultrasonic probe 2 then with liquid lens 1
Bottom external connection, correspondingly, support comprises a groove and the circular hole slot 10 connected with bottom portion of groove,
Groove is used for placing liquid lens 1, and circular hole slot is for by ultrasonic probe 2, and the end of each support is with another
The end of one support connects the array bracket 5 of composition line style, sets respectively in the symmetric position of liquid lens side
Putting a needle tubing 6, this needle tubing connects the inside and outside of cavity, and a needle tubing connects syringe pump by flexible pipe 7
4, another root needle tubing connects liquid collection receptacle 3 by flexible pipe 7, and support is then provided through the hole of needle tubing 6,
In the exit of liquid collection receptacle 3, valve 8 is set.
The concrete manufacturing process of each parts of the present embodiment is as follows:
Liquid lens 1 uses polymeric material polydimethylsiloxane to make, and concrete manufacture method is as follows:
Make the grinding tool 9 of liquid lens 1 based on 3D printing technique, the material that grinding tool 9 is used is resin,
The abrasive article structures completed is as shown in Figure 2；The trough body structure of the present embodiment grinding tool a size of 20mm (length)
× 15mm (wide) × 6mm (deeply), the Partial Height of central protuberance is that 5mm is for forming the chamber of liquid lens
Body, the difference in height of 1mm is for forming the underlayer thickness of liquid lens.
By elastomer silicone base and firming agent according to the ratio mixing manufacture polydimethylsiloxane of 10:1；Quiet
Put a period of time until its deaerate after, be injected in the groove in Fig. 2, and be heated to 80 DEG C continue 40 minutes；
By the time after polydimethylsiloxane solidifies in grinding tool, as shown in Figure 3.
Peel off out from grinding tool by it, and by polydimethylsiloxanefilm film key that a layer thickness is 100 μm
Close its aperture position, material is thus formed the cavity body structure of liquid lens；Last in liquid lens side
The needle tubing of a diameter of 0.5mm it is fixed with, for injection and relief liquor in liquid lens cavity in symmetric position
Body, as shown in Figure 4.
In the present embodiment, the liquid in liquid lens cavity is glycerol (75%) and the mixture of water (25%),
The density of this mixture is 1.19g/cm3, ultrasonic spread speed wherein is 1.78mm/ μ s, and acoustic impedance is
2.11MRay, in a word, the ultrasonic propagation velocity of the used liquid of liquid lens passes than environmental liquids environment ultrasonic
Broadcast speed and want big；System use syringe pump (KDS210, KD Scientific) by liquid through flexible pipe and pin
Pipe is injected in liquid lens cavity；During liquid infusion, liquid collection receptacle valve is opened,
It is beneficial to input injects liquid when discharge the air in cavity；In treating cavity, needle tubing and flexible pipe
After air discharge, valve closing, input port continues to inject liquid, at this moment poly-the two of liquid lens
Methylsiloxane thin film can start because of the increase of the volume of liquid to expand, and forms the cambered surface of liquid lens, as
Shown in Fig. 5.
The front end of the ultrasonic probe that each liquid lens completed is placed in ultrasonic sensing unit forms liquid
Lens ultrasonic sensing unit, as shown in Figure 6, the cavity of liquid lens and the cross section diameter of ultrasonic probe are
9mm, added with ultrasonic coupling agent between liquid lens and ultrasonic probe, it is ensured that between the two be in sealing contact and
Effective transmission of ultrasonic signal.
Embodiment 2
A kind of ultrasonic sensor array based on liquid lens, as different from Example 1, the present embodiment is
Ring-shaped ultrasonic sensor array, the sonac of specially four array liquid lens, based on 3D printing technique
Make the array bracket of ring-shaped ultrasonic sensor array, as shown in Figure 7,8, respectively top view and side view,
This array bracket includes 4 supports, and the both ends of each array bracket are sequentially connected with one side of formation together
The array bracket of shape, each support all comprises a groove and the circular hole slot 10 connected with bottom portion of groove, recessed
The opening of groove points to the center of array bracket, and circular hole slot 10 is laterally uniform on four limits of array bracket,
Circular hole slot 10 is used for fixing ultrasonic probe.
The present embodiment can fix the liquid lens ultrasonic sensing unit in 4 Fig. 6, and each liquid lens exists
Same needle tubing it is designed with, as it is shown in figure 9, the needle tubing input of four liquid lens is respectively in symmetric position
Using A, B, C, D to represent, correspondingly, syringe pump and the liquid collection receptacle of the present embodiment include respectively
4 input/output end ports, four needle tubing inputs connect the flexible pipe of equal length (for brevity, in figure
The figure of clipped flexible pipe) and it is connected respectively to tetra-input/output of syringe pump corresponding a, b, c, d
Port is used for injecting fluid；Four needle tubings outfan E, F, G, H (are succinct by the flexible pipe of equal length
For the sake of, the figure of clipped flexible pipe in figure) it is connected respectively to e, f, g, h that liquid collection receptacle is corresponding
Four input/output end ports, valve is located at liquid collection receptacle near ports, for controlling liquids recovery
System.
Liquid lens is equal in magnitude；The distance that input liquid is walked in flexible pipe is the most equal；Outfan liquid
The distance that body is walked in flexible pipe is the most equal.Based on above-mentioned 3 points, each liquid lens from input to defeated
Go out to hold total distance the most equal, be present to ensure that inside each liquid lens have equal pressure and consistent arc
Face structure.
According to above-described embodiment, this utility model just can be realized well.What deserves to be explained is, based on above-mentioned
On the premise of design principle, for solving same technical problem, even if in structure disclosed in the utility model
On the basis of make some without substantial change or polishing, the essence of the technical scheme used still with this
Utility model is the same, therefore it should also be as at protection domain of the present utility model.
Claims (10)
1. a ultrasonic sensor array based on liquid lens, it is characterised in that include more than one liquid
Lens sonac and the array bracket of fixing liquid lens sonac, each described liquid lens surpasses
Sonic transducer includes the ultrasonic probe of liquid lens, ultrasonic sensing unit, liquid lens and ultrasonic sensing unit
Connect；Described liquid lens includes the cavity formed by bottom, sidewall and by being bonded in the thin of sidewall opening
The cambered surface that film is formed, and it is provided with needle tubing by importing/tapping after cavity and ft connection.
A kind of ultrasonic sensor array based on liquid lens the most according to claim 1, its feature exists
In, the bottom external connection of described ultrasonic probe and liquid lens, and the size of liquid lens cavity bottom is big
Little consistent with the search coverage size of ultrasonic probe.
A kind of ultrasonic sensor array based on liquid lens the most according to claim 2, its feature exists
In, the thickness of described thin film is 10 μm-500 μm.
A kind of ultrasonic sensor array based on liquid lens the most according to claim 1, its feature exists
In, described liquid lens uses polymeric material to form.
A kind of ultrasonic sensor array based on liquid lens the most according to claim 1, its feature exists
In, the ultrasound transducer probe that ultrasonic probe is piezoelectric type of described ultrasonic sensing unit, or capacitive ultrasonic
Sensor probe.
A kind of ultrasonic sensor array based on liquid lens the most according to claim 1, its feature exists
In, described ultrasonic probe is connected with liquid lens by ultrasonic coupling agent.
7. according to a kind of based on liquid lens the ultrasonic sensor array described in claim 1-6 any one,
It is characterized in that, each described liquid lens sidewall arranges two needle tubings, and a needle tubing is by hose connection
Having syringe pump, another root needle tubing has liquid collection receptacle by hose connection.
A kind of ultrasonic sensor array based on liquid lens the most according to claim 7, its feature exists
In, the exit of described liquid collection receptacle arranges valve.
A kind of ultrasonic sensor array based on liquid lens the most according to claim 1, its feature exists
In, described array bracket includes that more than one support, each support include groove and connect with bottom portion of groove
Circular hole slot, this groove is used for fixing liquid lens, and circular hole slot is used for fixing ultrasonic sensing unit.
A kind of ultrasonic sensor array based on liquid lens the most according to claim 9, its feature
Being, described array is that line style is annular or spherical, when for line style, the end of each support with another
The end of frame connects the array bracket of composition line style；When for annular, institute's standoff both ends head and the tail are sequentially
Connecting the array bracket of composition annular, the opening of the groove of each support points to the center of array bracket；When for
Time spherical, all supports link together and form spherical array bracket, and the opening of the groove of each support
It is directed to the center of ball array support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201620233364.9U CN205537945U (en) | 2016-03-24 | 2016-03-24 | Ultrasonic sensor array based on liquid lens |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620233364.9U CN205537945U (en) | 2016-03-24 | 2016-03-24 | Ultrasonic sensor array based on liquid lens |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106580255A (en) * | 2016-12-12 | 2017-04-26 | 华南师范大学 | Electric-control focusing ultrasonic detector used for photoacoustic imaging and electric-control focusing method thereof |
-
2016
- 2016-03-24 CN CN201620233364.9U patent/CN205537945U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106580255A (en) * | 2016-12-12 | 2017-04-26 | 华南师范大学 | Electric-control focusing ultrasonic detector used for photoacoustic imaging and electric-control focusing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20210324 |