CN206132989U - Device is listened to differential hydrophone and differential water - Google Patents
Device is listened to differential hydrophone and differential water Download PDFInfo
- Publication number
- CN206132989U CN206132989U CN201621032972.XU CN201621032972U CN206132989U CN 206132989 U CN206132989 U CN 206132989U CN 201621032972 U CN201621032972 U CN 201621032972U CN 206132989 U CN206132989 U CN 206132989U
- Authority
- CN
- China
- Prior art keywords
- strip
- differential
- shell
- transducing
- chip
- 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.)
- Active
Links
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The utility model provides a device is listened to differential hydrophone and differential water. Wherein, differential hydrophone includes: strip transducing wafer, shell, first entrant sound gasket, second entrant sound gasket and wire, shell are the tubular structure, and strip transducing wafer is established to outer shell, and conducting material has all been plated at the both ends of strip transducing wafer, the shell was established to first entrant sound gasket cover one end, the other end of shell is established to second entrant sound gasket cover, the both ends of strip transducing wafer pass through the wire respectively with the external load coupling. Because the reception mode of its half -wavelength to effectively increase the frequency range of its receipt, and the piezoelectricity wafer that adopts has horizontal piezoelectric coefficient higher than piezoceramics commonly used and the acoustic impedance characteristic more close with the aqueous medium, thereby can improve differential hydrophone reception sensitivity and to the measurement accuracy of pressure by a wide margin. Because its change that is reception mode harmony sensing element mode to effectively improve the differential hydrophone of miniature volume the reception sensitivity and to the measurement accuracy of pressure.
Description
Technical field
This utility model belongs to differential hydrophone technical field, and in particular to a kind of differential hydrophone and differential water
Device for tone frequencies.
Background technology
With the continuous development and progress of science and technology, the application technology of differential hydrophone is also developing progressively ripe.Pressure
Acoustical signal produced by different gradient pressures under water can be converted to the signal of telecommunication due to which by differential hydrophone such that it is able to according to not
With signal of telecommunication difference and obtain barometric gradient under water, and then obtained relatively broad application.In prior art, pressure reduction
The transductive material overwhelming majority of formula hydrophone is made yet by composite, and by arranging sufficiently large capacitance, to reach
Higher receiving sensitivity and the certainty of measurement to pressure, and then can just access accurate barometric gradient.But larger electric capacity
Amount causes differential hydrophone to need to make larger size.And as differential hydrophone volume is excessive, had a strong impact on pressure
Portability and the suitability that differential hydrophone is used.Therefore, how by the improvement of technology, miniature or medium-sized volume can be made
It is current industry a great problem that differential hydrophone can have higher receiving sensitivity and the certainty of measurement to pressure.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of differential hydrophone and differential water device for tone frequencies.With
Effectively improve the receiving sensitivity and the certainty of measurement to pressure of the differential pressure type hydrophone of miniature or medium-sized volume.
What embodiment of the present utility model was realized in：
In a first aspect, this utility model embodiment provides a kind of differential hydrophone, including：It is strip transducing chip, outer
Shell, the first entrant sound diaphragm seal, the second entrant sound diaphragm seal and wire, the shell are tubular structure, and the shell is arranged the bar
Shape transducing chip, the two ends of the strip transducing chip are coated with conductive material, and the first entrant sound diaphragm seal is arranged described outer
One end of shell, the second entrant sound diaphragm seal are arranged the other end of the shell, and the two ends of the strip transducing chip are by leading
Line is coupled with external loading respectively.The first entrant sound diaphragm seal for the strip transducing chip and external environment condition are isolated,
And the first acoustical signal in water is transferred to one end of the strip transducing chip.The second entrant sound diaphragm seal is used for will be described
Strip transducing chip and external environment condition isolation, and by the rising tone signal transmission in water to the another of the strip transducing chip
End.The strip transducing chip is used to first acoustical signal that the first entrant sound diaphragm seal input is received by its one end
Second acoustical signal of the second entrant sound diaphragm seal input is received with its other end, and first acoustical signal is converted to
First electric signal output is converted to the second electric signal output to the outside to the external loading and by second acoustical signal
Load, so that the external loading obtains pressure ladder by relatively first acoustical signal and the rising tone signal difference
Degree.
Further, the strip transducing chip includes：Lead zinc niobate-lead titanates, PMN-PT, magnoniobate
Lead-lead zirconate titanate, lead niobate lead indate-lead-PMN-PT or its compositions derived therefrom relaxor ferroelectric monocrystal are made.
Further, the strip transducing chip is lead based relaxor single-chip, and the mode of operation of the single-chip is [011]
Crystal orientation polarizes, horizontal d32([100] crystal orientation) or d31([0-11] crystal orientation) drives.
Further, one end of the strip transducing chip and the wire have two Coupling points, the strip transducing
The other end of chip and the wire have two Coupling points.
Further, the shell includes：Acoustic damping shell and containment vessel, the acoustic damping shell are arranged the strip and change
Energy chip, the containment vessel are arranged the acoustic damping shell.
Further, the acoustic damping shell and the containment vessel are tubular structure.
Second aspect, this utility model embodiment additionally provide a kind of differential water device for tone frequencies, including：Body, Duo Gekong
Chamber and multiple differential hydrophone；Each described cavity runs through the body, each described cavity and adjacent institute
State cavity and be respectively provided with angle, each described differential hydrophone is may be contained within the cavity.
Further, the shape size of each cavity is matched with the shape size of the differential hydrophone.
Further, the body is column structure, and the cavity is two, and two cavitys are mutually perpendicular to.
Further, the body is spheroid, and the cavity is three, two equal and adjacent cavitys of each described cavity
With 60 ° of angles.
The beneficial effect of this utility model embodiment is：By the tubular structure of shell, shell just can be arranged strip transducing
Chip.By the two ends of strip transducing chip are plated conductive material, so that the electrode of strip transducing chip is at middle interval
It is disconnected, and so that the two ends of strip transducing chip have polarity respectively.One end of shell is arranged by the first entrant sound diaphragm seal, and again
The other end of shell is arranged by the second entrant sound diaphragm seal, and by the two ends of strip transducing chip to be passed through wire and outside
Load coupling.While seal under water by transducing chip and external loading also achieves coupling.
First entrant sound diaphragm seal is by strip transducing chip and external environment condition are isolated, and the acoustical signal in water is transferred to
Strip transducing chip.Strip transducing chip just can receive the first acoustical signal of the first entrant sound diaphragm seal input by its one end.
The electrode of strip transducing chip is separated in centre, so as to received the first entrant sound diaphragm seal input in one end of strip transducing chip
The first acoustical signal after first signal of telecommunication is converted to just by strip transducing chip one end export to external loading.Second entrant sound
Diaphragm seal is by strip transducing chip and external environment condition are isolated, and the acoustical signal in water is transferred to strip transducing chip.Bar
Shape transducing chip just can pass through the second acoustical signal that its other end receives the input of the second entrant sound diaphragm seal.Strip transducing chip
Electrode separated in centre, so as to the rising tone letter of the other end of strip transducing chip received the second entrant sound diaphragm seal input
Just exported to external loading by the other end of strip transducing chip number after second signal of telecommunication is converted to.And due to strip transducing crystalline substance
The difference of piece two ends position, received first acoustical signal and the second acoustical signal it is also different.Due to received first
The difference of acoustical signal and the second acoustical signal, so as to first signal of telecommunication and second signal of telecommunication that are input to external loading are also different, enters
And external loading just can correspondingly calculate strip transducing chip two by the difference for calculating first signal of telecommunication and second signal of telecommunication
Barometric gradient between end.
As in differential hydrophone, strip transducing chip is arranged by shell, and shell is tubular structure, so as to strip
The two ends of transducing chip are the free ends do not closed by shell.Due to the two ends freedom of strip transducing chip, so as to strip
The two ends of transducing chip can receive acoustical signal, and then the strip transducing chip of differential hydrophone can be in the way of half-wavelength
Acoustical signal is received.Due to the reception mode of its half-wavelength, so as to its frequency range for receiving for effectively increasing, and adopt
Piezoelectric chip with the horizontal piezoelectric moduluses higher than conventional piezoelectric ceramics and with the closer acoustic impedance features present of aqueous medium, from
And differential hydrophone receiving sensitivity and the certainty of measurement to pressure can be greatly improved.As which is that reception mode harmony is sensitive
The change of element manipulation pattern such that it is able to effectively improve the receiving sensitivity of the differential hydrophone of micro-volume and to pressure
Strong certainty of measurement.
Other feature and advantage of the present utility model will be illustrated in subsequent description, also, partly from description
Become apparent, or understood by implementing this utility model embodiment.The purpose of this utility model and other advantages can
Realize and obtain by specifically noted structure in the description, claims and accompanying drawing write.
Description of the drawings
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment
Needed for accompanying drawing to be used be briefly described, it should be apparent that, drawings in the following description are only of the present utility model
A part of embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, can be with basis
These accompanying drawings obtain other accompanying drawings.By, shown in accompanying drawing, above and other purpose of the present utility model, feature and advantage will more
Plus it is clear.In whole accompanying drawings, identical reference indicates identical part.Deliberately do not scale by actual size equal proportion
Draw accompanying drawing, it is preferred that emphasis is purport of the present utility model is shown.
Fig. 1 shows the structural representation of a kind of differential hydrophone that this utility model embodiment is provided；
Fig. 2 shows the structure of the first embodiment of a kind of differential water device for tone frequencies that this utility model embodiment is provided
Schematic diagram；
Fig. 3 shows the structure of the second embodiment of a kind of differential water device for tone frequencies that this utility model embodiment is provided
Schematic diagram.
Icon：The differential hydrophone of 100-；110- strip transducing chips；120- shells；121- acoustic damping shells；122- is protected
Protective case；130- the first entrant sound diaphragm seals；140- the second entrant sound diaphragm seals；150- wires；The differential water device for tone frequencies of 200-；210- sheets
Body；220- cavitys；The differential water device for tone frequencies of 300-；310- bodies；320- cavitys.
Specific embodiment
It is to make purpose, technical scheme and the advantage of this utility model embodiment clearer, new below in conjunction with this practicality
Accompanying drawing in type embodiment, is clearly and completely described to the technical scheme in this utility model embodiment, it is clear that retouched
The embodiment stated is a part of embodiment of this utility model, rather than the embodiment of whole.Generally described in accompanying drawing herein and
The component of this utility model embodiment for illustrating can be arranged and be designed with a variety of configurations.
Therefore, the detailed description of embodiment of the present utility model below to providing in the accompanying drawings is not intended to limit requirement
The scope of the present utility model of protection, but it is merely representative of selected embodiment of the present utility model.Based in this utility model
Embodiment, the every other embodiment obtained under the premise of creative work is not made by those of ordinary skill in the art, all
Belong to the scope of this utility model protection.
It should be noted that：Similar label and letter represent similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then in subsequent accompanying drawing which further need not be defined and is explained.
In description of the present utility model, it should be noted that term " top ", " bottom ", " side ", " interior ", " outward " etc. are indicated
Orientation or position relationship be that, based on orientation shown in the drawings or position relationship, or the utility model product is usual when using
The orientation put or position relationship, are for only for ease of description this utility model and simplify description, rather than indicate or imply institute
The device or element of finger must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this reality
With new restriction.Additionally, term " first ", " second " etc. are only used for distinguishing description, and it is not intended that indicating or implying phase
To importance.
In description of the present utility model, in addition it is also necessary to explanation, unless otherwise clearly defined and limited, term " sets
Put ", " connection " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；Can
Being to be mechanically connected, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in utility model
Fig. 1 is referred to, this utility model embodiment provides a kind of differential hydrophone 100, and differential hydrophone 100 is wrapped
Include：Strip transducing chip 110, shell 120, the first entrant sound diaphragm seal 130, the second entrant sound diaphragm seal 140 and wire 150.
In the present embodiment, differential hydrophone 100 can be horizontal mode of operation, so as to strip transducing chip 110
Can be by：Lead zinc niobate-lead titanates (PZN-PT), PMN-PT (PMN-PT), lead magnesio-niobate-lead zirconate titanate (PMN-
PZT), the post made by relaxation ferro-electricity single crystal such as lead niobate lead indate-lead-PMN-PT (PIN-PMN-PT) or its compositions derived therefrom
Shape structure.Due to lead zinc niobate-lead titanates (PZN-PT), PMN-PT (PMN-PT), lead magnesio-niobate-lead zirconate titanate
(PMN-PZT), the material such as lead niobate lead indate-lead-PMN-PT (PIN-PMN-PT) has high horizontal piezoelectric constant, than
Such as horizontal piezoelectric constant d32 ≈-(3000～4000) pC/N, the horizontal piezoelectric constant d31 ≈ 1100pC/N of PZN-PT.And this
The acoustic impedance of PZN-PT is about 7MRayls, and the acoustic impedance of the acoustic impedance and water is closer to.Therefore, above-mentioned material is especially suitable for
Make the strip transducing chip 110 of high receiving sensitivity such that it is able to higher sensitivity.
The two ends of strip transducing chip 110 are coated with conductive material.As conductive material cover only strip transducing chip
110 two ends, so as to the electrode of strip transducing chip 110 is separated in centre, so as to the two ends of strip transducing chip 110 lead to
Cross be coated with conductive material and individually there is polarity.So as to the two ends of strip transducing chip 110 can individually by acoustical signal
The signal of telecommunication is converted into, the signal of telecommunication that the two ends of strip transducing chip 110 are formed also is divided by the two ends of strip transducing chip 110 respectively
Not individually do not export.In the present embodiment, conducting metal can be：Silver, copper, gold, aluminum, tungsten, nickel and ferrum etc..
As a kind of mode, when differential hydrophone 100 is used in shallow water area, strip transducing chip 110 can be with
Polarize for [011] crystal orientation for working method, and passing through (100) face carries out the transverse mode lead based relaxor monocrystalline of acoustical signal sensing
Piece, so that hydrophone 100 can have the high sensitivity of measurement acoustical signal in shallow water area.And work as differential hydrophone 100
When deep-sea domain is used, strip transducing chip 110 can be [011] crystal orientation polarization d31 patterns, and pass through (0-11) face and enter
The transverse mode lead based relaxor single-chip of row acoustical signal sensing, so as to ensureing that differential hydrophone 100 works in the domain of deep-sea
Also with the high sensitivity to acoustical signal measurement in the case of stability.It should be noted that (100) face can be strip transducing
The two ends of chip 110, and (0-11) face can be the side wall of strip transducing chip 110.
Shell 120 includes：Acoustic damping shell 121 and containment vessel 122, acoustic damping shell 121 and containment vessel 122 can be
Tubular structure.Acoustic damping shell 121 can be arranged strip transducing chip 110, and enable the two ends position of strip transducing chip 110
At the opening at 121 two ends of acoustic damping shell.The shape of the shape size and strip transducing chip 110 of 121 internal diameter of acoustic damping shell
Shape size is matched, so as to acoustic damping shell 121 just can closely be arranged strip transducing chip 110.Optionally, acoustic damping shell
121 can be made up of the elastomeric material of acoustic damping.After be arranged by strip transducing chip 110, acoustic damping
Shell 121 has completely cut off acoustical signal.The two ends just can only be arranged from strip transducing chip 110 by acoustical signal in water are input into, from
And the two ends of strip transducing chip 110 just can be respectively formed the free end for receiving acoustical signal, and then strip transducing chip 110 just can
It is enough that acoustical signal is received in the way of half-wavelength.
The shape size matching of the internal diameter size and acoustic damping shell 121 of containment vessel 122, so as to containment vessel 122 just can
By being arranged acoustic damping shell 121 again, so that protection can be formed to acoustic damping shell 121 and strip transducing chip 110, and can
Isolation contact of the acoustic damping shell 121 with strip transducing chip 110 with water.As the two ends of containment vessel 122 are respectively provided with opening, from
And need to close one end of containment vessel 122 by the first entrant sound diaphragm seal 130, and again will by the second entrant sound diaphragm seal 140
The other end closing of containment vessel 122, and then form totally enclosed structure.The shape size of the first entrant sound diaphragm seal 130 and protection
The shape size matching of 122 one end open of shell.So as to by the first edge of entrant sound diaphragm seal 130 and opening for 122 one end of containment vessel
Mouth is fixedly connected, and the opening of 122 one end of containment vessel just can be sealed by the first entrant sound diaphragm seal 130.Second entrant sound diaphragm seal 140
122 another end opening of shape size and containment vessel shape size matching.So as to by the edge of the second entrant sound diaphragm seal 140 and
The opening of 122 other end of containment vessel is fixedly connected, and the second entrant sound diaphragm seal 140 just can be by the opening of 122 other end of containment vessel
Sealing.To be protected by the second entrant sound diaphragm seal 140 by one end closing of containment vessel 122 and again by the first entrant sound diaphragm seal 130
The other end closing of protective case 122, differential hydrophone 100 just can form totally enclosed structure, so as to completely cut off with water.Due to sound
The transmission of signal can pass through the first entrant sound diaphragm seal 130 and the second entrant sound diaphragm seal 140, so as to the acoustical signal in water just can
110 two ends of strip transducing chip are input into respectively by the first entrant sound diaphragm seal 130 and the second entrant sound diaphragm seal 140.Strip transducing
110 two ends of chip can will be respectively received acoustical signal by being respectively received acoustical signal, just and be respectively converted into corresponding telecommunications
Number.
The two ends of strip transducing chip 110 pass through wire 150 respectively and external loading is coupled.Strip transducing chip 110
After wire and external loading coupling, first signal of telecommunication that one end produces just can be passed through by strip transducing chip 110 for one end
Wire output is to external loading., after wire and external loading coupling, strip transducing is brilliant for the other end of strip transducing chip 110
Second signal of telecommunication that the other end just can be produced by piece 110 is by wire output to external loading.
External loading just can be obtained by the pressure difference corresponding to first signal of telecommunication of calculating and the second signal of telecommunication difference
The difference of the pressure values in the water detected respectively of the two ends of differential hydrophone 100.It should be noted that wire 150 is logical
Cross and be each passed through the first entrant sound diaphragm seal 130 and the second entrant sound diaphragm seal 140 is coupled with strip transducing chip 110, so as to first
Entrant sound diaphragm seal 130 and the second entrant sound diaphragm seal 140 are equipped with the through hole matched with the bore of wire 150, and then wire 150
By the through hole and the strip transducing chip 110 that are each passed through the through hole and the second entrant sound diaphragm seal 140 of the first entrant sound diaphragm seal 130
After coupling, as its bore is matched, differential hydrophone 100 is maintained to the state for fully sealing.
Fig. 2 is referred to, this utility model embodiment also provides a kind of differential water device for tone frequencies 200.The differential water is tinned
Putting 200 includes：Body 210, cavity 220 and differential hydrophone 100.As a kind of mode, in differential water device for tone frequencies 200
Cavity 220 can be for multiple, and differential hydrophone corresponding with cavity 220 100 can also be multiple.So as to by multiple pressures
The measurement of differential hydrophone 100, the just barometric gradient of measurable multiple directions, and then more accurate pressure gradient can be obtained survey
Value.The shape size of each cavity 220 is equal and the shape size matching of differential hydrophone 100, so as to each differential water
Device 100 is listened to be arranged in cavity 220.Each cavity 220 runs through body 210, to ensure differential hydrophone 100
Two ends can receive acoustical signal.Each cavity 220 is respectively provided with angle with adjacent cavity 220, so as to differential water is tinned
The measurement of 200 acoustical signals that just can realize multiple directions is put, by the acoustical signal measured by integrated treatment multiple directions,
The barometric gradient of multiple directions can also be further obtained, and then more accurate pressure gradiometry value can be obtained.
As shown in Fig. 2 Fig. 2 shows that embodiment provides a kind of first embodiment of differential water device for tone frequencies 200.Body
210 can be cylinder, and the quantity of cavity 220 is two, and the quantity of corresponding differential hydrophone 100 is also two.Often
Individual cavity 220 is arranged between the top and bottom of body 210, and the direction run through by two cavitys 220 is orthogonal, and two empty
The direction run through by chamber 220 is parallel with the top and bottom of body 210 respectively.Each differential hydrophone 100 may be contained within institute
In corresponding cavity 220, so as to differential water device for tone frequencies 200 just can realize the two-dimentional sound to mutually orthogonal both direction
The measurement of signal, and then differential water device for tone frequencies 200 just can be measured that the two-dimensional pressure gradient of mutually orthogonal both direction.
Such as Fig. 3, Fig. 3 show that embodiment provides a kind of second embodiment of differential water device for tone frequencies 300.Body 310
Can be spheroid, the quantity of cavity 320 is three, the quantity of corresponding differential hydrophone 100 is also three.Each cavity
320 are arranged in body 310, and three cavitys 320 can surround equilateral triangle.The direction run through by each cavity 320
60 ° of angle is formed through direction with adjacent cavities 320.Each differential hydrophone 100 may be contained within corresponding cavity
In 220, so as to differential water device for tone frequencies 200 just can realize the three dimensional sound message to three directions for mutually forming 60 ° of angles
Number measurement, and then differential water device for tone frequencies 200 just can be measured that the three-dimensional pressure in three directions for mutually forming 60 ° of angles
Gradient.
In sum, this utility model embodiment provides a kind of differential pressure type hydrophone 100 and differential water device for tone frequencies
200.By the tubular structure of shell 120, shell 120 just can be arranged strip transducing chip 110.By by strip transducing chip
110 two ends plate conductive material, so that the electrode of strip transducing chip 110 separates middle, and so that strip transducing
The two ends of chip 110 have polarity respectively.One end of shell 120 is arranged by the first entrant sound diaphragm seal 130, and passes through second again
Entrant sound diaphragm seal 140 is arranged the other end of shell 120, and the two ends of strip transducing chip 110 are passed through wire 150 and outside
Load coupling.It is achieved thereby that while strip transducing chip 110 is sealed under water and external loading also achieves coupling.
First entrant sound diaphragm seal 130 by strip transducing chip 110 and external environment condition are isolated, and by the acoustical signal in water
It is transferred to strip transducing chip 110.Strip transducing chip 110 just can receive the first entrant sound diaphragm seal 130 by its one end
First acoustical signal of input.The electrode of strip transducing chip 110 is separated in centre, so as to one end of strip transducing chip 110
First acoustical signal of the received input of the first entrant sound diaphragm seal 130 is after first signal of telecommunication is converted to just by strip transducing chip
110 one end output is to external loading.Second entrant sound diaphragm seal 140 by strip transducing chip 110 and external environment condition are isolated,
And the acoustical signal in water is transferred to into strip transducing chip 110.Strip transducing chip 110 just can be received by its other end
Second acoustical signal of the input of the second entrant sound diaphragm seal 140.The electrode of strip transducing chip 110 is separated in centre, so as to strip
Second acoustical signal of the received input of the second entrant sound diaphragm seal 140 of the other end of transducing chip 110 is being converted to second signal of telecommunication
Just exported to external loading by the other end of strip transducing chip 110 afterwards.And due to 110 two ends position of strip transducing chip
Difference, received first acoustical signal and the second acoustical signal it is also different.Due to the first received acoustical signal and the rising tone
The difference of signal, so as to first signal of telecommunication and second signal of telecommunication that are input to external loading are also different, and then external loading passes through
The difference for calculating first signal of telecommunication and second signal of telecommunication just can correspondingly calculate the pressure between 110 two ends of strip transducing chip
Gradient.
As in differential hydrophone 100, strip transducing chip 110 is arranged by shell 120, and shell 120 is tied for tubulose
Structure, the two ends from strip transducing chip 110 are the free ends do not closed by shell 120.Due to strip transducing chip 110
Two ends freedom, so as to the two ends of strip transducing chip 110 can receive acoustical signal, and then the strip of differential hydrophone 100
Transducing chip 110 can be received to acoustical signal in the way of half-wavelength.Due to the reception mode of its half-wavelength, so as to effective
Increase its receive frequency range, and adopt piezoelectric chip with the horizontal piezoelectric moduluses higher than conventional piezoelectric ceramics with
With the closer acoustic impedance features present of aqueous medium, so as to greatly improve differential hydrophone receiving sensitivity and the measurement to pressure
Precision.Due to the change which is reception mode harmony sensing element mode of operation such that it is able to effectively improve micro-volume
The receiving sensitivity of differential hydrophone 100 and the certainty of measurement to pressure.
Preferred embodiment of the present utility model is the foregoing is only, this utility model is not limited to, for this
For the technical staff in field, this utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle
Within, any modification, equivalent substitution and improvements made etc. are should be included within protection domain of the present utility model.
Claims (10)
1. a kind of differential hydrophone, it is characterised in that include：Strip transducing chip, shell, the first entrant sound diaphragm seal, second
Entrant sound diaphragm seal and wire, the shell are tubular structure, and the shell is arranged the strip transducing chip, the strip transducing
The two ends of chip are coated with conductive material, and the first entrant sound diaphragm seal is arranged one end of the shell, and second entrant sound is close
Mounting is arranged the other end of the shell, and the two ends of the strip transducing chip are coupled with external loading respectively by wire；
The first entrant sound diaphragm seal is for the strip transducing chip and external environment condition are isolated, and the first sound in water is believed
Number it is transferred to one end of the strip transducing chip；
The second entrant sound diaphragm seal is for the strip transducing chip and external environment condition are isolated, and the rising tone in water is believed
Number it is transferred to the other end of the strip transducing chip；
The strip transducing chip is used to the first sound letter that the first entrant sound diaphragm seal input is received by its one end
Number and its other end receive second acoustical signal of the second entrant sound diaphragm seal input, and will first acoustical signal conversion
The second electric signal output is converted to described outer for the first electric signal output to the external loading and by second acoustical signal
Section load, so that the external loading obtains pressure ladder by relatively first acoustical signal and the rising tone signal difference
Degree.
2. differential hydrophone according to claim 1, it is characterised in that the strip transducing chip includes：Niobium zincic acid
Lead-lead titanates, PMN-PT, lead magnesio-niobate-lead zirconate titanate, lead niobate lead indate-lead-PMN-PT or which is derivative
Component relaxor ferroelectric crystal is made.
3. differential hydrophone according to claim 2, it is characterised in that the strip transducing chip is lead based relaxor list
Chip, the mode of operation of the single-chip polarize for [011] crystal orientation, horizontal d32([100] crystal orientation) or d31([0-11] crystal orientation) drives
It is dynamic.
4. differential hydrophone according to claim 2, it is characterised in that one end of the strip transducing chip and described
The other end and the wire that wire has two Coupling points, the strip transducing chip has two Coupling points.
5. differential hydrophone according to claim 1, it is characterised in that the shell includes：Acoustic damping shell and guarantor
Protective case, the acoustic damping shell are arranged the strip transducing chip, and the containment vessel is arranged the acoustic damping shell.
6. differential hydrophone according to claim 5, it is characterised in that the acoustic damping shell and the containment vessel are equal
For tubular structure.
7. a kind of differential water device for tone frequencies, it is characterised in that include：Body, multiple cavitys and multiple such as claim 1-5 are appointed
Differential hydrophone described in one；Each described cavity runs through the body, each described cavity and the adjacent sky
Chamber is respectively provided with angle, and each described differential hydrophone is may be contained within the cavity.
8. water device for tone frequencies according to claim 7, it is characterised in that the equal and described pressure of shape size of each cavity
The shape size matching of differential hydrophone.
9. water device for tone frequencies according to claim 7, it is characterised in that the body is column structure, and the cavity is two
Individual, two cavitys are mutually perpendicular to.
10. water device for tone frequencies according to claim 7, it is characterised in that the body is spheroid, and the cavity is three,
Two equal and adjacent cavitys of each described cavity have 60 ° of angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621032972.XU CN206132989U (en) | 2016-08-31 | 2016-08-31 | Device is listened to differential hydrophone and differential water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621032972.XU CN206132989U (en) | 2016-08-31 | 2016-08-31 | Device is listened to differential hydrophone and differential water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206132989U true CN206132989U (en) | 2017-04-26 |
Family
ID=58568220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621032972.XU Active CN206132989U (en) | 2016-08-31 | 2016-08-31 | Device is listened to differential hydrophone and differential water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206132989U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441545A (en) * | 2016-08-31 | 2017-02-22 | 北京越音速科技有限公司 | Pressure-gradient hydrophone, pressure gradient obtaining device, and pressure-gradient hydrophone apparatus |
| WO2018041238A1 (en) * | 2016-08-31 | 2018-03-08 | Beijing Supersonic Technology Co., Ltd. | Hydrophone, transduction method, and compound hydrophone |
| CN109932048A (en) * | 2019-03-14 | 2019-06-25 | 浙江大学 | A kind of interference type optical fiber hydrophone probe based on difference structure |
-
2016
- 2016-08-31 CN CN201621032972.XU patent/CN206132989U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441545A (en) * | 2016-08-31 | 2017-02-22 | 北京越音速科技有限公司 | Pressure-gradient hydrophone, pressure gradient obtaining device, and pressure-gradient hydrophone apparatus |
| WO2018041238A1 (en) * | 2016-08-31 | 2018-03-08 | Beijing Supersonic Technology Co., Ltd. | Hydrophone, transduction method, and compound hydrophone |
| CN109932048A (en) * | 2019-03-14 | 2019-06-25 | 浙江大学 | A kind of interference type optical fiber hydrophone probe based on difference structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206132989U (en) | Device is listened to differential hydrophone and differential water | |
| CN105323685B (en) | A kind of piezoelectric hydrophone of full depth of water broad band low frequency high sensitivity | |
| CN106404158A (en) | Hydrophone, transduction method and hydrophone device | |
| CN107438213B (en) | Hydrophone and manufacturing process thereof | |
| CN106441545A (en) | Pressure-gradient hydrophone, pressure gradient obtaining device, and pressure-gradient hydrophone apparatus | |
| WO2019047633A1 (en) | Integrated logging-while-drilling acoustic wave-receiving transducer encapsulation device | |
| CN102901981A (en) | High hydrostatic pressure-resistant small piezoelectric hydrophone and manufacturing method thereof | |
| CN104614066B (en) | A kind of piezoelectric ceramic hydrophone of metal shell sealing | |
| CN105996657A (en) | Intelligent straw cup | |
| CN206132211U (en) | Device is listened to hydrophone and water | |
| US3336573A (en) | Crystal pressure sensitive geophones for use in soft earth | |
| WO2021036861A1 (en) | High-sensitivity magnetoresistive acoustic wave sensor and array device | |
| US11841342B2 (en) | Shear-type vibration-ultrasonic composite sensor and measuring device | |
| CN205426327U (en) | Low frequency is piezoelectric seismometer under water | |
| CN107941391A (en) | A kind of wireless and passive temperature-compensation method for film bulk acoustic pressure sensor | |
| CN207050845U (en) | A kind of deep water hydrophone | |
| CN107271028A (en) | A kind of hyperthermal environments passive wireless acoustic surface wave sensor-based system transponder | |
| CN203643602U (en) | High-sensitivity ultrasonic wave sensor | |
| CN213397350U (en) | Vector hydrophone and vector hydrophone unit | |
| CN204575154U (en) | A kind of lead type amplitude high sensitivity ultrasonic sensor | |
| CN214416909U (en) | Energy converter | |
| CN208704958U (en) | A kind of packaging system of surface acoustic wave sensor | |
| CN110631688B (en) | Vector underwater acoustic sensor | |
| CN105092136B (en) | underground quartz resonance pressure sensor | |
| CN206074116U (en) | A kind of underwater sound sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |