CN106019261A - Extended bionic probe based on sound and electric joint structure - Google Patents
Extended bionic probe based on sound and electric joint structure Download PDFInfo
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- CN106019261A CN106019261A CN201610291813.XA CN201610291813A CN106019261A CN 106019261 A CN106019261 A CN 106019261A CN 201610291813 A CN201610291813 A CN 201610291813A CN 106019261 A CN106019261 A CN 106019261A
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- circular cone
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
- G01S7/521—Constructional features
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
- G01S7/534—Details of non-pulse systems
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Transducers For Ultrasonic Waves (AREA)
Abstract
The invention provides an extended bionic probe based on a sound and electric joint structure. The extended bionic probe comprises a multi-slope top cone emitter probe, a receiving bundle probe array and a socket. The multi-slope top cone emitter probe carries out wide-band energy-gathered emission. The receiving bundle probe array carries out broadband high-sensitivity receiving. The socket sleeves the receiving bundle probe array at the bottom of the multi-slope top cone emitter probe. The functions of emitter and receiver probes are separated. The emitter probe based on the sound and electric joint structure concentrates on energy-gathered transmitting of high-power continuous broadband ultrasonic waves. The receiver probe based on the sound and electric joint structure concentrates on high-sensitivity receiving of broadband signals. The extended bionic ultrasonic probe is provided with the integrated sound and electric structure, can effectively emit broadband ultrasonic waves, and can effectively receive weak signals.
Description
Technical field
The present invention relates to supersonic sounding technology, be specifically related to the bionical probe of extension based on acoustoelectric combined structure.
Background technology
During ultrasound examination, transmitting and the reception of ultrasound wave are realized by ultrasonic probe.Current is super
Sonic probe typically both also served as receiving transducer as transmitting probe, and when launching, ultrasonic probe sends out ultrasound wave as transmitting probe
Go out, then switch to reception state at once, wait to be received.Ultrasound wave is through detection thing reflection, and the ultrasound wave of reflection arrives super
Sonic probe, ultrasonic probe receives ultrasound wave as receiving transducer.The working method of this either simplex requires that the ultrasound wave launched continues
Time is short, can not retransmit ultrasound wave when receiving echo, and therefore transmitted wave is generally short pulse punching.
Ultrasonic probe both also serves as receiving transducer as transmitting probe the feature of himself, as the more pass of transmitting probe
Note is to launch ultrasonic power greatly, so can improve the signal to noise ratio launching signal, and two can increase propagation distance,
Improve penetration capacity.For transmitting probe, increase and launch power, bigger transmitting power will be born, transducer must be increased
The floor space of wafer, thus improve the energy launching signal.It is the sensitive of reception ultrasound wave as receiving transducer more attention
Degree, can receive faint reflectance ultrasound ripple is its main target.This just requires that receiving transducer detection area is little, disturbs little,
And for improving the precision of detection, particularly improve transverse resolution little with greater need for detection area.I other words the property of transmitting probe
The performance objective of energy target and receiving transducer is inconsistent, or perhaps can not get both, therefore transmitting probe and reception are visited
Head should not realize with same probe.
From the perspective of theory of information, the transmitting signal of probe should be a wideband continuous signal.According to Shannon information
Opinion, the quantity of information of signal is
(formula 1)
Wherein I is the quantity of information of detectable signal, and B is the bandwidth (frequency range) of detectable signal, T be detectable signal duration (time
Wide), S/N is the signal to noise ratio of signal.From (formula 1) it will be seen that quantity of information is directly proportional to bandwidth, improve signal to noise ratio and increase band
Width can improve quantity of information, and under obtaining same amount of information, increase bandwidth and can reduce the requirement launching Signal-to-Noise.
Equally, quantity of information is directly proportional to detectable signal duration, increases detectable signal duration and can improve quantity of information, and is obtaining equal letter
Under breath amount, increase detectable signal duration and can reduce the requirement launching Signal-to-Noise.Therefore, the continuous transmitting of broadband signal
It is transmitting broadband signal, adds again the length of available signal so that the peak value of signal is far away than pulse under identical energy
Peak value low, such that it is able to reduce launch power, improve signal efficiency.And present probe does not the most support that wideband sends.
The feature of the probe being currently used for supersonic sounding is:
1) launching impulse wave, the pulsed wave transmissions time is short, and pulse amplitude is high, it is therefore desirable to higher emitted energy so that pulse
Launch signal efficiency low.
2) transmission of wideband continuous wave is not supported.
3) a lot of detections use single-simplex operation pattern, are i.e. same probes, both also serve as receiving transducer as transmitting probe,
The performance sending and receiving mutually is restricted, all can not be effectively improved.
A lot of animal is had to position target predation existence by the transmitting of ultrasound wave and reception, as " radar flies at biosphere
Beast " Vespertilio aloft utilizes ultrasound wave " navigation ", can the most accurately catch winged insect, even can be in complete darkness, to be exceedingly fast
Speed accurately circle in the air, without same front object bump against.Vespertilio face sends ultrasound wave, when running into food or obstacle
During thing, ultrasonic reflections is returned, the Vespertilio echo of two ears reception objects, and determines therefrom that the position of this object, and passes through
Analyze the difference between the echo that two ears receive respectively, distinguish the distance of object, shape size and character.If its ear is covered
On, and mouth is blocked, then lose the ability avoiding bumping against with object.Additionally, some ocean mammals also can be by sending out under water
Go out the widest sound wave of frequency band (even as high as 300,000 hertz) to position.Such as tooth whale, dolphin, receive anti-to sound of Terrain
Ejected wave, measures direction with echolocation, learns the position of object or seashore.Some sea dog, sea lion also can send out ultrasonic under water
Ripple.Gather the sound that these biologies send, analyze it will be seen that what these biologies sent is all wideband continuous ultrasonic, additionally
It sends and receives is all with different organs, and Each performs its own functions, and the detection just making them is the most accurate.
Summary of the invention
For current ultrasonic probe to launch pulse, do not support that the transmission of wideband continuous wave, detection use either simplex more
Pattern makes the shortcoming that detection accuracy is the highest, is inspired by the detected with high accuracy of organism, and the present invention proposes a kind of based on acoustic-electric connection
Closing the bionical probe of extension of structure, make transmitting probe separate with the function of receiving transducer, transmitting based on acoustoelectric combined structure is visited
Head is absorbed in the energy accumulating of high-power (meeting supersonic sounding needs) broadband ultrasonic wave continuously and is sent, based on acoustoelectric combined structure
Receiving transducer be absorbed in the highly sensitive reception of broadband signal.
The purpose of the present invention realizes at least through one of following technical scheme.
A kind of bionical probe of extension based on acoustoelectric combined structure, including multi slope end face circular cone transmitting probe, receives bundle
Tie up linear transducer array and bell and spigot joint；Multi slope end face circular cone transmitting probe realizes wideband cumulative and launches；Receive binding linear transducer array real
The existing highly sensitive reception of wideband；Bell and spigot joint is socketed in the bottom of multi slope end face circular cone transmitting probe receiving binding linear transducer array.
A kind of prioritization scheme extending bionical probe based on acoustoelectric combined structure, multi slope end face circular cone transmitting probe
Acoustic form feature is: total is a conical structure, sends the face of sound, have many including one in similar biology
The cone of slope end face, some ultrasonic transducer wafers.
The above-mentioned cone with multi slope end face, its end face is not smooth, but has the irregular flat of multi slope
Face composition, be i.e. that the slope of each concave plane can be different.Each concave plane is offered several flutings and is come
Place the ultrasonic transducer wafer of respective numbers.Use acoustic window material to make or the inside hollow in the middle of cone cone, make
Used time fills entrant sound liquid；Cone cone and end face can separate, and rotate socket by setting lines；Cone cone
A non-sound transparent layer is added outside side；Being an anchor ring bottom cone, outer shroud is non-sound transparent layer, and internal ring is conical base
It is one in the middle of mouth, with cone, acoustic window material makes or hollow.
Several ultrasonic transducer wafers above-mentioned are distributed in the fluting on each concave plane of cone circular cone end face
In, its size, transmission center frequency values, spacing between can be different；Ultrasonic transducer wafer can be piezoelectric ceramics
Wafer, it is also possible to be other kinds of piezoelectric chip, supports to send the arrowband frequency conversion letter of high-power (meeting detection needs)
Number.
The above-mentioned cone with multi slope end face, disposes the ultrasonic of respective numbers according to the fluting number that end face is arranged
Transducer wafer, after placing, rotary sleeve is connected on cone again, makes overall.
Above-mentioned multi slope end face circular cone transmitting probe is by several ultrasonic transducer wafers being placed on the many end faces of circular cone
Common broadband ultrasonic wave of launching is to conical base mouth；The fluting of each concave plane of end face, towards conical base mouth, makes
The ultrasound wave direct projection the most as much as possible that superincumbent ultrasonic transducer wafer is launched must be disposed to conical base mouth, decay
Few, like the face whistled so that the sound sent is the biggest.If the ultrasonic transducer wafer on the many end faces of circular cone is launched
The ultrasound wave overwhelming majority all incide the side of cone, then through reflection, the ultrasound wave inciding conical base mouth passes through
Path is elongated, and through reflection, decay will necessarily be more than the ultrasound wave of the conical base mouth that goes directly.Multi slope end face circular cone is launched
Owing to the addition of non-sound transparent layer outside the conical side surface of probe so that even if ultrasound wave incides conical side surface, also major part can
Reflect.
Above-mentioned multi slope end face circular cone transmitting probe height by cone top surface area, each concave plane of end face oblique
Degree, conical base mouth caliber size together decides on, and the principle of decision is: the ultrasound wave direct projection that ultrasonic transducer wafer sends is to circle
Cone bottom ports is the most so that energy converges as wide as possible.
Above-mentioned multi slope end face circular cone transmitting probe, for preventing ultrasound wave backward launched, its end face is followed by upper non-entrant sound
The backing that material makes.
A kind of prioritization scheme extending bionical probe based on acoustoelectric combined structure, multi slope end face circular cone transmitting probe
Electricity construction features is: multi slope end face circular cone transmitting probe is by several ultrasonic transducer wafers being placed on the many end faces of circular cone
Jointly launch broadband ultrasonic wave, including digital-to-analogue (DA) transducer, frequency divider and several power amplifiers.Wideband sends letter continuously
Number after digital-to-analogue (DA) is changed, split by line frequency band advanced after frequency divider, then carried out power by corresponding arrowband power amplifier and put
Greatly, the ultrasonic transducer wafer of correspondence it is then forwarded to.The ultrasound wave so converged at conical base mouth is the ultrasonic of a wideband
Ripple.
A kind of prioritization scheme extending bionical probe based on acoustoelectric combined structure, receives the acoustic form of binding linear transducer array
Feature is: be made up of several receiving transducer binding groups, like the ear in organism, but here can be as required by many
Individual " ear " (receiving transducer binding group) forms；Each receiving transducer binding group is by the ultrasonic transducer group of different center frequency
Become, make it to receive the ultrasound wave of different frequency range, receive for wideband；The size of the ultrasonic transducer of different center frequency can not
With, thin film head or capacitance type micromachined ultrasonic transducer (CMUT) spy that volume ratio is higher compared with sluggishness can be selected
Head；Several receiving transducer binding groups are symmetrical；The array of some receiving transducer binding groups arrangement is placed on a circuit
On plate, its shape is with the difference of detection scene, it can be provided for different shapes, such as circle, square etc., receives different directions
Ultrasonic echo, this circuit board central aperture so that it is the end of multi slope end face circular cone transmitting probe can be socketed in by bell and spigot joint
End.
A kind of prioritization scheme extending bionical probe based on acoustoelectric combined structure, receives the electric structure of binding linear transducer array
Feature is: the ultrasonic transducer of each receiving transducer binding group has a pre-amplification circuit to be close to, and is allowed to the ultrasonic of reception
Signal can amplify immediately.Every road is collected into multipath reception signal after single channel modulus (AD) is changed again after amplifying.
A kind of prioritization scheme extending bionical probe based on acoustoelectric combined structure, bell and spigot joint is attached to multi slope end face circular cone
Below the conical base mouth of transmitting probe, it is socketed in the transmitting spy of multi slope end face circular cone by screw thread receiving binding linear transducer array
The bottom of head.
Compared with existing ultrasonic probe, the invention have the advantages that
(1) this ultrasonic probe can send continuous broadband signal.The increase of the increase of bandwidth and the persistent period of transmitting signal makes
The performance obtaining whole detection system is improved.
(2) the bionical ultrasonic probe of this extension is inspired by biosphere high-precision detection thought, and transmitting probe and reception are visited
Head separately, is each absorbed in the performance promoting oneself.
(3) performance of transmitting probe is promoted.The acoustic form of multi slope end face circular cone transmitting probe is a conical structure,
Similar biology sends the face of sound；Additionally each concave plane of end face is towards conical base mouth so that be placed in
The ultrasound wave direct projection the most as much as possible that ultrasonic transducer wafer above is launched, to conical base mouth, decays minimum, like blowing
The face of whistle so that the sound sent is the biggest.
(4) performance of receiving transducer is promoted.Receiving transducer is made up of, like in organism some receiving transducer binding groups
Ear, but can be made up of multiple " ears " (receiving transducer binding group) as required here, the on-demand setting of number；Each connect
Receive probe binding group to be made up of the ultrasonic transducer of different center frequency, it is possible to wideband receives, on-demand composition.And can also basis
Test scene is arranged in difform array some receiving transducer binding groups, receives the ultrasonic echo of different directions, on-demand
Arrangement.
(5) this extension bionical ultrasonic probe acoustic-electric structure designs together, can effectively send broadband ultrasonic wave, and can be the most efficient
Rate receives small-signal.
Accompanying drawing explanation
Fig. 1 is the bionical probe schematic diagram of extension based on acoustoelectric combined structure of the present invention.
Fig. 2 a is the acoustic form schematic diagram of the multi slope end face circular cone transmitting probe of the present invention.
Fig. 2 b is many end faces schematic diagram of the multi slope end face circular cone transmitting probe of the present invention.
Fig. 3 is the electric structural representation of the multi slope end face circular cone transmitting probe of the present invention.
Fig. 4 is the acoustic form schematic diagram receiving binding linear transducer array of the present invention.
Fig. 5 is the electric structural representation receiving binding linear transducer array of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is described further, but the enforcement of the present invention and protection are not limited to
This.
As it is shown in figure 1, be the bionical probe schematic diagram of extension based on acoustoelectric combined structure described in the present embodiment, extend bionical
Probe includes multi slope end face circular cone transmitting probe 1, receives binding linear transducer array 2 and bell and spigot joint 3；Multi slope end face circular cone is launched
Probe 1 realizes broadband cumulative and launches；Receive binding linear transducer array 2 to be enclosed within bell and spigot joint 3, it is achieved the highly sensitive reception in broadband；Socket
3 receive binding linear transducer array and are socketed in the bottom of multi slope end face circular cone transmitting probe.Clear in order to illustrate, figure receives
Binding linear transducer array 2 is not socketed on bell and spigot joint 3, and only signal is in order to be socketed and the reserved circle with the equal size of bell and spigot joint
Hole.
As shown in Figure 2 a, it is the acoustic form schematic diagram of multi slope end face circular cone transmitting probe.Total is a rounding
Cone structure, sends the face of sound in similar biology, have the cone 101 of multi slope end face, some ultrasonic including one
Transducer wafer.The most do not illustrate ultrasonic transducer wafer.There is the cone 101 of multi slope end face, its end face 102(pair
Answer the bottom surface of geometry circular cone) it not smooth, but there is the concave plane composition of multi slope, it is i.e. each irregular flat
The slope in face can be different.It is brilliant to the ultrasonic transducer placing respective numbers that each concave plane offers several grooves
Sheet.Use acoustic window material to make or the inside hollow in the middle of cone cone, during use, fill entrant sound liquid；Cone cone
Can separate with end face, rotate socket by setting lines；A non-sound transparent layer is added outside cone pyramid side
103.Being an anchor ring bottom cone, outer shroud is non-sound transparent layer, and internal ring is in the middle of conical base mouth 104, with cone to be one
Body, acoustic window material make or hollow.
Above-mentioned multi slope end face circular cone transmitting probe is by several ultrasonic transducer wafers being placed on the many end faces of circular cone
Common broadband ultrasonic wave of launching is to conical base mouth 104；Several ultrasonic transducer wafers be distributed in circular cone end face each not
On regular planar, its interval, size, transmission center frequency values can be different；Ultrasonic transducer wafer can be that piezoelectric ceramics is brilliant
Sheet, it is also possible to be other kinds of piezoelectric chip, supports to send powerful arrowband frequency variation signal.There is the circle of multi slope end face
Cone, the fluting number arranged according to end face disposes the ultrasonic transducer wafer of respective numbers, rotary sleeve again after placing
It is connected on cone, makes overall.Multi slope end face circular cone transmitting probe height is by cone top area, and end face is each not
The gradient of regular planar, conical base mouth caliber size together decides on, and the principle of decision is: it is super that ultrasonic transducer wafer sends
Sound wave direct projection is the most to conical base mouth so that energy converges as wide as possible.Multi slope end face circular cone transmitting probe, for
Prevent ultrasound wave backward launched, the backing 105 that its end face makes followed by upper non-acoustic window material.
As shown in Figure 2 b, being the end face schematic diagram of multi slope end face circular cone transmitting probe, each irregular of end face 102 is put down
The fluting 106 in face is all towards conical base mouth so that the ultrasound wave disposing superincumbent ultrasonic transducer wafer to launch the most to the greatest extent may be used
Can how direct projection to conical base mouth, decay minimum, like the face whistled so that the sound sent is the biggest.If circle
Bore the most side all inciding cone of ultrasound wave that the ultrasonic transducer wafer on many end faces is launched, then through anti-
Penetrating, the ultrasound wave inciding conical base mouth is elongated through path, and through reflection, decay will necessarily be more than going directly conical bottom
The ultrasound wave of portion's mouth.Owing to the addition of non-sound transparent layer 103 outside the conical side surface of multi slope end face circular cone transmitting probe so that i.e.
Enable ultrasound wave to incide conical side surface also major part to reflect.
As it is shown on figure 3, be the electric structural representation of multi slope end face circular cone transmitting probe, multi slope end face circular cone launches spy
Head is launched broadband ultrasonic wave jointly by several ultrasonic transducer wafers being placed on the many end faces of circular cone, turns including digital-to-analogue (DA)
Parallel operation, frequency divider and several power amplifiers (arrowband power amplifier).After wideband transmission signal is changed by digital-to-analogue (DA) continuously, warp
Advanced line frequency band segmentation after crossing frequency divider, then carried out power amplification by corresponding, it is then forwarded to the ultrasonic transducer wafer of correspondence.
The ultrasound wave so converged at conical base mouth is the ultrasound wave of a wideband.
As shown in Figure 4, it is the acoustic form schematic diagram receiving binding linear transducer array.Receive binding linear transducer array acoustic form by
Some receiving transducer binding groups form, and like the ear in organism, illustrate here by 6 " ears " (receiving transducer binding group)
Composition；Each receiving transducer binding group is by ultrasonic transducer (by different shadow representation in the figure) group of 3 different center frequency
Becoming, make it to receive the ultrasound wave of different frequency range, receive for wideband, the size of the ultrasonic transducer of different center frequency can not
With, it is set in the same size here；Several receiving transducer binding groups are symmetrical；Some receiving transducer binding groups arrangement and
The array become is placed on a circuit board, and its shape is with the difference of detection scene, it can be provided for different shapes, such as circle
Shape, square etc., receive the ultrasonic echo of different directions, be provided in round here.This circuit board central aperture so that it is can be by set
Adaptor cup jointing is in the bottom of multi slope end face circular cone transmitting probe.
As it is shown in figure 5, be the electric structural representation receiving binding linear transducer array.A kind of extension based on acoustoelectric combined structure
The prioritization scheme of bionical probe, the electric construction features receiving binding linear transducer array is: ultrasonic the changing of each receiving transducer binding group
A pre-amplification circuit can be had to be close to by device, the ultrasonic signal being allowed to receive can amplify immediately.Every road is passed through after amplifying again
Single channel modulus (AD) is collected into multipath reception signal after changing.
Claims (10)
1. the bionical probe of extension based on acoustoelectric combined structure, it is characterised in that include that multi slope end face circular cone is launched and visit
Head, reception binding linear transducer array and bell and spigot joint；Multi slope end face circular cone transmitting probe realizes broadband cumulative and launches；Receive binding to visit
Head array realizes broadband reception；Bell and spigot joint is socketed in the end of multi slope end face circular cone transmitting probe receiving binding linear transducer array
End.
A kind of bionical probe of extension based on acoustoelectric combined structure the most according to claim 1, it is characterised in that multi slope
The acoustic form of end face circular cone transmitting probe is: total is an inverted cone structure, has multi slope end face including one
Cone and be positioned at some ultrasonic transducer wafers of described multi slope end face.
A kind of bionical probe of extension based on acoustoelectric combined structure the most according to claim 2, it is characterised in that described tool
Having the cone of multi slope end face, the bottom surface of the most corresponding geometry cone of its end face is not smooth, but has multi slope
Concave plane composition, be i.e. that the slope of each concave plane can be different；Each concave plane offers several
Fluting is for placing the ultrasonic transducer wafer of respective numbers；Acoustic window material is used to make in the middle of cone cone, or in
Entrant sound liquid is filled when hollow structure and use.
A kind of bionical probe of extension based on acoustoelectric combined structure the most according to claim 3, it is characterised in that cone
Cone and end face are separable, rotate socket by setting lines；Cone pyramid side outer wall is provided with non-sound transparent layer；Use
Time, the cone of multi slope end face, the fluting number arranged according to end face disposes the ultrasonic transducer wafer of respective numbers, peace
After putting, rotary sleeve is connected in cone again, makes overall；The bottom of the described cone with multi slope end face is the most right
The position, summit answering geometry circular cone is an opening, and edge of opening is anchor ring, and outer shroud is non-sound transparent layer, and internal ring is at the bottom of cone
Portion's mouth, is one in the middle of cone bottom ports and cone, acoustic window material makes or hollow.
A kind of bionical probe of extension based on acoustoelectric combined structure the most according to claim 2, it is characterised in that if described
A dry ultrasonic transducer wafer is placed in the fluting on each concave plane of circular cone end face, several ultrasonic transductions described
The size of device wafer, transmission center frequency values, spacing between can be different；Ultrasonic transducer wafer piezoelectric chip support sends
Arrowband frequency variation signal.
A kind of bionical probe of extension based on acoustoelectric combined structure the most according to claim 2, it is characterised in that described many
Slope end face circular cone transmitting probe is jointly launched wideband by several ultrasonic transducer wafers being placed on the many end faces of circular cone and is surpassed
Sound wave is to conical base mouth；The fluting of each concave plane of end face is towards conical base mouth so that dispose superincumbent
The ultrasound wave direct projection the most as much as possible that ultrasonic transducer wafer is launched, to conical base mouth, makes decay minimum.
A kind of bionical probe of extension based on acoustoelectric combined structure the most according to claim 2, it is characterised in that described many
Slope end face circular cone transmitting probe height by cone top surface area, the gradient of each concave plane of end face, conical base mouth
Caliber size together decides on, and the principle of decision is: the ultrasound wave direct projection that ultrasonic transducer wafer sends to the greatest extent may be used to conical base mouth
Energy is many so that energy converges as wide as possible；For preventing ultrasound wave backward launched, after multi slope end face circular cone transmitting probe end face
The backing that face makes plus non-acoustic window material.
A kind of bionical probe of extension based on acoustoelectric combined structure the most according to claim 1, it is characterised in that multi slope
The electric structure of end face circular cone transmitting probe is: include digital-to-analogue (DA) transducer, frequency divider and several power amplifiers；Power is put
The corresponding ultrasonic transducer wafer of big device, continuous wideband transmission signal is after digital-to-analogue (DA) is changed, by first after frequency divider
Carry out frequency band segmentation, then carried out power amplification by corresponding power amplifier, be then forwarded to the ultrasonic transducer wafer of correspondence；Many
Slope end face circular cone transmitting probe is launched width jointly by several ultrasonic transducer wafers being placed on circular cone multi slope end face
Frequency ultrasonic.
A kind of bionical probe of extension based on acoustoelectric combined structure the most according to claim 1, it is characterised in that receive bundle
The acoustic form tying up linear transducer array is: be made up of some receiving transducer binding groups；Receiving transducer binding group is by different center frequency
Ultrasonic transducer forms, and makes it to receive the ultrasound wave of different frequency range, and the size of the ultrasonic transducer of different center frequency can not
With；Several receiving transducer binding groups are symmetrical；The array of some receiving transducer binding groups arrangement is placed on a circuit
On plate, receiving the ultrasonic echo of different directions, described circuit board central aperture passes through for bell and spigot joint and is socketed in multi slope end face
The bottom of circular cone transmitting probe.
A kind of bionical probe of extension based on acoustoelectric combined structure the most according to claim 1, it is characterised in that it is special
Levy be receive binding linear transducer array electric structure be: the ultrasonic transducer of each receiving transducer binding group be connected to one preposition
Amplifying circuit, the ultrasonic signal being allowed to receive can amplify immediately；Every road turns through corresponding single channel modulus (AD) after amplifying again
Change rear collected for multipath reception signal.
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