CN106932817A - A kind of piezoelectric transducer of comprehensive detection ground sound underwater sound signal - Google Patents
A kind of piezoelectric transducer of comprehensive detection ground sound underwater sound signal Download PDFInfo
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- CN106932817A CN106932817A CN201710058976.8A CN201710058976A CN106932817A CN 106932817 A CN106932817 A CN 106932817A CN 201710058976 A CN201710058976 A CN 201710058976A CN 106932817 A CN106932817 A CN 106932817A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/16—Receiving elements for seismic signals; Arrangements or adaptations of receiving elements
- G01V1/18—Receiving elements, e.g. seismometer, geophone or torque detectors, for localised single point measurements
- G01V1/186—Hydrophones
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- Life Sciences & Earth Sciences (AREA)
- Acoustics & Sound (AREA)
- Environmental & Geological Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Transducers For Ultrasonic Waves (AREA)
Abstract
The invention provides a kind of piezoelectric transducer of comprehensive detection ground sound underwater sound signal, including closed cubic housing, cubic housing is cavity body structure, and cubic enclosure interior is provided with inertia mass ball；Piezoelectric ceramic piece group is embedded with the cubic end to end four side walls of housing, charge amplifier is provided with the one of front end face being connected with four side walls on cubic housing；Charge amplifier is used to receive and amplify the electric signal of piezoelectric ceramics group generation and export electric signal to outside collecting device；Piezoelectric ceramic piece group includes the first piezoelectric ceramic piece and the second piezoelectric ceramic piece；Outside of first piezoelectric ceramic piece by proximal wall；Inner side of second piezoelectric ceramic piece by proximal wall；It is the cavity structure of sealing between first piezoelectric ceramic piece and the second piezoelectric ceramic piece.The present invention can simultaneously sense the seismic signal propagated along seabed of Vibration Targets generation in reception ocean and by extra large water-borne sound pressure signal.
Description
Technical field
The invention belongs to sensor field, and in particular to a kind of piezoelectric transducer of comprehensive detection ground sound-underwater sound signal.
Background technology
At present, using moving-coil detector, the universal wave detector of piezoelectric type, MEMS ground more than the ground acoustical signal that detection seismic wave is produced
The sensors such as shake wave detector, detection underwater sound signal then uses hydrophone.Vibration Targets in ocean can simultaneously produce ground sound and water
Acoustical signal so that the cost of testing equipment increases, equipment is complicated, at present frequently with ground sound-underwater sound dual sensor, simply will
Land wave detector and hydrophone simply, are mechanically combined, and therefore cost does not have and reduce, and equipment volume is larger.
The signal wave that this kind of wave detector is received simultaneously is unilateral, it is impossible to ensure its accuracy.
The content of the invention
A kind of defect of the purpose of the present invention aiming at prior art, there is provided the pressure of comprehensive detection ground sound-underwater sound signal
Electric transducer, can simultaneously sense the seismic signal propagated along 3-D walls and floor along seabed for receiving Vibration Targets generation in ocean
With by extra large water-borne sound pressure signal.
The invention provides a kind of piezoelectric transducer of comprehensive detection ground sound-underwater sound signal, it is characterised in that：It includes close
The cubic housing and charge amplifier for closing, cubic housing are cavity body structure, and cubic enclosure interior is provided with inertia mass ball；Four directions
Piezoelectric ceramic piece group is embedded with the face of housing at least four, charge amplifier is used to receive the electricity for amplifying the generation of piezoelectric ceramic piece group
Signal simultaneously exports electric signal to external detection equipment；First piezoelectric ceramic piece of each piezoelectric ceramic piece group including coaxial placement and
Second piezoelectric ceramic piece；First piezoelectric ceramic piece leans on the outside of proximal wall, and the second piezoelectric ceramic piece leans on the inner side of proximal wall, inertia
Displacement is produced to cause the second piezoelectric ceramic piece deformation after mass ball is vibrated, for inductively acoustical signal；First piezoelectric ceramics
The cavity structure of sealing is formed between piece and the second piezoelectric ceramic piece, shape is produced after the first piezoelectric ceramic piece is subject to hydraulic pressure effect
Become, sense underwater sound signal.
The cubic enclosure interior is filled with silicone oil, suppresses external noise.
There is gap between the inertia mass ball and cubic housing.
It is described to be provided with the face of the cubic housing of piezoelectric ceramic piece group the metallic framework for being embedded with annular, the first piezoelectricity pottery
Ceramics and the second piezoelectric ceramic piece are respectively arranged at the both sides of metallic framework, the first piezoelectric ceramic piece and the second piezoelectric ceramic piece point
Do not realize being connected with the both sides sealing of metallic framework by silica gel, metallic framework and the first piezoelectric ceramic piece and the second piezoelectric ceramics
Piece cooperatively forms described cavity structure.
The cubic hull outside cladding rubber sleeve.
The rubber sleeve is internally provided with and turns over drum, and external cabling is worn to be connected in and turned on drum；External cabling one end and electric charge
Amplifier is electrically connected, and the other end of external cabling is electrically connected with external detection equipment.
The second piezoelectric ceramic piece in all piezoelectric ceramic piece groups is serially connected and is electrically connected with charge amplifier；All pressures
The first piezoelectric ceramic piece in electroceramics piece group mode parallel with one another is connected and electrically connected with charge amplifier.
The cubic housing is cubic housing, and cubic housing includes four side walls and two baffle plates；It is all provided with four side walls
It is equipped with piezoelectric ceramic piece group.
The charge amplifier is arranged on the one of end face of cubic housing.
The present invention sets piezoelectric ceramic piece group on four side walls of cubic housing, effectively receives the bottom from multiple faces
Signal.The present invention can simultaneously sense the seismic signal propagated along seabed of Vibration Targets generation in reception ocean and by seawater
The sound pressure signal of propagation, cubic housing can sense the seismic wave letter that earthquake motion causes near the second piezoelectric ceramic piece of inside side walls
Number, each face has identical reception；Positioned at first piezoelectric ceramic piece and the second piezoelectricity in outside in cubic housing sidewall
The cavity structure that potsherd is cooperatively formed can sense the sound pressure variations in water, sensing, reception underwater sound signal.Multiple first piezoelectricity potteries
Ceramics is in parallel, multiple second piezoelectric ceramic piece series connection, forms the superposition of each face signal, reduces the setting of hardware.First pressure
Electroceramics piece and the second piezoelectric ceramic piece series connection and connect, the ground sound and the joint-detection of underwater sound signal of realization.In cubic housing
The silicone oil of portion's filling provides appropriate damping, has preferably inhibitory action to portion of external noise；Piezoelectric ceramic piece group is produced
The quantity of electric charge of measurand is proportional to, with the preferable linearity, and charge amplifier amplifies signal in front end, beneficial to signal
At a distance, low-loss transmission；The present invention has reception bandwidth wider, up to 5-400Hz, takes into account reception low-and high-frequency signal.This
It is patent of invention simple structure, piezoelectric ceramic piece sensitivity high, good reliability, amphibious, easy to use.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is partial schematic diagram of the present invention；
Fig. 3 is sectional view schematic diagram of the present invention；
Wherein, 1- four directions housing, 2- piezoelectric ceramic piece groups, the piezoelectric ceramic pieces of 21- first, the piezoelectric ceramic pieces of 22- second, 3-
Side wall, 31- manholes, 32- breach, 4- baffle plates, 5- metallic frameworks, 6- charge amplifiers, 7- inertia mass balls, 8- turns over line
Disk, 9- rubber sleeves, 10- external cablings.
Specific embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings, is easy to be well understood to this hair
It is bright, but they do not constitute restriction to the present invention.
As shown in figure 1, the invention provides a kind of piezoelectric transducer of comprehensive detection ground sound-underwater sound signal, its feature exists
In：It includes closed cubic housing 1, and cubic housing 1 is cubic shell cavity body structure, and cubic housing 1 is internally provided with inertia matter
Amount ball 7；The inertia mass ball 7 is metal ball.Piezoelectric ceramics is embedded with 1 end to end four side wall 3 of cubic housing
Piece group 2, charge amplifier 6 is provided with the one of front end face 4 being connected with four side walls 3 on cubic housing 1；Electric charge amplifies
Device 6 is used to receive the electric signal of amplification piezoelectric ceramics group generation and export electric signal to outside collecting device；Piezoelectric ceramic piece group 2
Including the first piezoelectric ceramic piece 21 and the second piezoelectric ceramic piece 22；Outside of first piezoelectric ceramic piece 21 by proximal wall 3；Second pressure
Electroceramics piece 22 produces displacement to cause the shape of the second piezoelectric ceramic piece 22 by the inner side of proximal wall 3 after inertia metal ball is vibrated
Become, for inductively acoustical signal；The cavity structure of sealing is formed between first piezoelectric ceramic piece 21 and the second piezoelectric ceramic piece 22,
First piezoelectric ceramic piece 21 produces deformation after being subject to hydraulic pressure effect, senses underwater sound signal.
The inside of the cubic housing 1 is filled with silicone oil, there is provided damping, suppresses external noise.
Suitable gap is left between the cubic housing 1 and inertia mass ball 7, has both ensured that inertia mass ball 7 is shaken
Displacement can be produced to cause the deformation of the second piezoelectric ceramic piece 22 after dynamic, inertia mass 7 pairs of the second piezoelectric ceramic pieces 22 of ball are ensured again
Impact is unlikely to excessive, so as to avoid damaging the second piezoelectric ceramic piece 22.
The metallic framework 5 of annular, the first piezoelectric ceramic piece 21 and the second piezoelectric ceramics are embedded with four side walls 3
Piece 22 is respectively arranged at the both sides of metallic framework 5, and the first piezoelectric ceramic piece 21 and the second piezoelectric ceramic piece 22 pass through silica gel respectively
Realization is connected with the both sides sealing of metallic framework 5, it is ensured that the first piezoelectric ceramic piece 21 and the second piezoelectric ceramic piece 22 form sealing
Cavity, it is ensured that the accuracy of detection signal.The manhole 31 for being embedded metallic framework 5 is provided with side wall 3, circle is logical
The edge in hole 31 sets jagged 32, and card sets metallic framework 5 when being easily installed.Metallic framework 5 is realized and side wall 3 by screw
It is fixedly connected.Breach 32 is closed with rubber, it is ensured that the Integral sealing of cubic housing 1 after the installation of metallic framework 5.
The outside of the cubic housing 1 is coated with the rubber sleeve 9 of a strata urethane, its placement for being not only convenient for land, in water
Also there is less resistance during middle dragging, it is solid and reliable, it is good to internal component seal effect, effectively prevent leak, electric leakage, and tool
There is preferable impact resistance.Piezoelectric transducer is placed horizontally at ground, and inertia mass ball is in contact with the second piezoelectric ceramic piece,
It is subjected to displacement by receiving ground acoustic vibration, inertia mass ball is oppressed the second piezoelectric ceramic piece and brings it about deformation, the second compressing pottery
Ceramics transmits to external equipment the electric signal of generation by charge amplifier, realizes ground acoustical signal processing.Piezoelectric transducer is put
It is often slant setting when being placed in seabed, the cavity structure that multiple first piezoelectric ceramic pieces and the second piezoelectric ceramic piece are formed is complete
The underwater sound signal in multiple faces in the three-dimensional system of face, it is ensured that the abundant reception of underwater sound signal；Inertia mass ball is by receiving ground sound and vibration
Dynamic to be subjected to displacement so as to oppress multiple second piezoelectric ceramic pieces, the second piezoelectric ceramic piece being serially connected realizes the folded of ground acoustical signal
Plus detection.First piezoelectric ceramic piece combines the second piezoelectric ceramic piece group and connects, and this connected mode preferably ensure that to the underwater sound
With the joint-detection of ground acoustical signal
The rubber sleeve 9 is internally provided with and turns over drum 8, and external cabling 10 is worn to be connected in and turned on drum 8；Turn over drum 8 effectively steady
Determine external cabling 10, turn over drum 8 and be not connected with cubic housing 1.The one end of external cabling 10 electrically connects with charge amplifier 6, outward
The other end of portion's wiring 10 is electrically connected with external detection equipment.Turn over drum 8 ensure that external cabling 10 in external pull well
In the presence of will not be separated with interconnector.
Described four second piezoelectric ceramic pieces 22 are serially connected and are electrically connected with charge amplifier 6, realize the merging of signal,
By asking for four second piezoelectric ceramic pieces 22 and obtain accurate ground acoustical signal.It is set forth in four first piezoelectric ceramic pieces 21
Mode parallel with one another is connected and electrically connected with charge amplifier 6, and four first piezoelectric ceramic pieces 21 obtain four and face respectively
The underwater sound signal answered.This connected mode has been effectively ensured the detection to the underwater sound and ground acoustical signal.Only measure land vibration signal
When, it is only necessary to sensor levels are placed；Only during measurement underwater sound signal, it is fixed and suspends in water；Ground sound-water
During acoustical signal comprehensive detection, seabed is placed on, can delicately detect very much the ground sound that Vibration Targets in ocean are excited
And underwater sound signal.Charge amplifier 6 is beneficial to the long-distance transmissions for receiving signal.
The content that this specification is not described in detail belongs to prior art known to professional and technical personnel in the field.
Claims (8)
1. the piezoelectric transducer of a kind of comprehensive detection ground sound-underwater sound signal, it is characterised in that：It includes closed cubic housing
(1) and charge amplifier (6), cubic housing (1) is cavity body structure, and cubic housing (1) is internally provided with inertia mass ball (7)；
The cubic housing (1) is cubic housing, and cubic housing includes four side walls (3) and two baffle plates (4)；It is all provided with four side walls
It is equipped with piezoelectric ceramic piece group (2)；Charge amplifier (6) amplifies the electric signal of piezoelectric ceramic piece group generation for receiving and exports electricity
Signal is to external detection equipment；First piezoelectric ceramic piece (21) and second of each piezoelectric ceramic piece group (2) including coaxial placement
Piezoelectric ceramic piece (22)；Outside of first piezoelectric ceramic piece (21) by proximal wall (3)；Second piezoelectric ceramic piece (22) is by proximal wall
(3) inner side, produces displacement to cause the second piezoelectric ceramic piece (22) deformation, for inductively sound after inertia mass ball is vibrated
Signal；The cavity structure of sealing, the first piezoelectricity pottery are formed between first piezoelectric ceramic piece (21) and the second piezoelectric ceramic piece (22)
Ceramics (21) produces deformation after being acted on by hydraulic pressure, to sense underwater sound signal.
2. the piezoelectric transducer of comprehensive detection according to claim 1 ground sound-underwater sound signal, it is characterised in that cubic housing
(1) it is internal to suppress external noise filled with silicone oil.
3. the piezoelectric transducer of comprehensive detection according to claim 2 ground sound-underwater sound signal, it is characterised in that inertia mass
There is gap between ball (7) and cubic housing (1).
4. the piezoelectric transducer of comprehensive detection according to claim 1 ground sound-underwater sound signal, it is characterised in that be provided with piezoelectricity
The metallic framework (5) of annular, the first piezoelectric ceramic piece (21) and second are embedded with the face of the cubic housing of potsherd group (2)
Piezoelectric ceramic piece (22) is respectively arranged at the both sides of metallic framework (5), the first piezoelectric ceramic piece (21) and the second piezoelectric ceramic piece
(22) realize by silica gel being connected with the both sides sealing of metallic framework (5) respectively, metallic framework (5) and the first piezoelectric ceramic piece
And the second piezoelectric ceramic piece (22) cooperatively forms described cavity structure (21).
5. the piezoelectric transducer of comprehensive detection according to claim 1 ground sound-underwater sound signal, it is characterised in that cubic housing
(1) outside cladding rubber sleeve (9).
6. the piezoelectric transducer of comprehensive detection according to claim 5 ground sound-underwater sound signal, it is characterised in that rubber sleeve
(9) it is internally provided with and turns over drum (8), external cabling (10) is worn to be connected in and turned on drum (8)；Put with electric charge external cabling (10) one end
Big device (6) electrical connection, the other end of external cabling (10) is electrically connected with external detection equipment.
7. the piezoelectric transducer of comprehensive detection according to claim 1 ground sound-underwater sound signal, it is characterised in that all piezoelectricity
The second piezoelectric ceramic piece (22) in potsherd group (2) is serially connected and is electrically connected with charge amplifier (6)；All piezoelectric ceramics
The first piezoelectric ceramic piece (21) in piece group (2) mode parallel with one another is connected and electrically connected with charge amplifier (6)；First pressure
Electroceramics piece (21) and the second piezoelectric ceramic piece (22) are connected.
8. the piezoelectric transducer of comprehensive detection according to claim 1 ground sound-underwater sound signal, it is characterised in that electric charge amplifies
Device (6) is arranged on cubic housing (1) one of end face (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710058976.8A CN106932817B (en) | 2017-01-23 | 2017-01-23 | A kind of comprehensive detection ground sound-underwater sound signal piezoelectric transducer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710058976.8A CN106932817B (en) | 2017-01-23 | 2017-01-23 | A kind of comprehensive detection ground sound-underwater sound signal piezoelectric transducer |
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| Publication Number | Publication Date |
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| CN106932817A true CN106932817A (en) | 2017-07-07 |
| CN106932817B CN106932817B (en) | 2018-11-30 |
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| CN201710058976.8A Active CN106932817B (en) | 2017-01-23 | 2017-01-23 | A kind of comprehensive detection ground sound-underwater sound signal piezoelectric transducer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108645504A (en) * | 2018-04-02 | 2018-10-12 | 中国人民解放军海军工程大学 | A kind of sound insulation type ground acoustic pressure electric transducer |
| CN117277866A (en) * | 2023-11-22 | 2023-12-22 | 吉林大学 | Four-degree-of-freedom trans-scale stepping actuator based on piezoelectric driving |
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| US4700177A (en) * | 1983-12-23 | 1987-10-13 | Nippondenso Co., Ltd. | Sound generating apparatus with sealed air chamber between two sounding plates |
| CN2724018Y (en) * | 2004-06-28 | 2005-09-07 | 陕西超波传感器有限责任公司 | Novel composite earthquake wave detector |
| CN2833625Y (en) * | 2005-10-25 | 2006-11-01 | 薛辉 | Marine seism hydrophorce with piezoelectric structure |
| CN101414011A (en) * | 2008-12-03 | 2009-04-22 | 天津海声水下探测设备有限公司 | Deep well piezoelectric detector |
| CN102901981A (en) * | 2012-10-22 | 2013-01-30 | 中国船舶重工集团公司第七一五研究所 | High hydrostatic pressure-resistant small piezoelectric hydrophone and manufacturing method thereof |
| CN103168254A (en) * | 2010-09-02 | 2013-06-19 | 离子地球物理学公司 | Multi-component, acoustic-wave sensor and methods |
| CN205426327U (en) * | 2016-03-17 | 2016-08-03 | 西安陆洲智能传感技术有限公司 | Low frequency is piezoelectric seismometer under water |
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2017
- 2017-01-23 CN CN201710058976.8A patent/CN106932817B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4700177A (en) * | 1983-12-23 | 1987-10-13 | Nippondenso Co., Ltd. | Sound generating apparatus with sealed air chamber between two sounding plates |
| CN2724018Y (en) * | 2004-06-28 | 2005-09-07 | 陕西超波传感器有限责任公司 | Novel composite earthquake wave detector |
| CN2833625Y (en) * | 2005-10-25 | 2006-11-01 | 薛辉 | Marine seism hydrophorce with piezoelectric structure |
| CN101414011A (en) * | 2008-12-03 | 2009-04-22 | 天津海声水下探测设备有限公司 | Deep well piezoelectric detector |
| CN103168254A (en) * | 2010-09-02 | 2013-06-19 | 离子地球物理学公司 | Multi-component, acoustic-wave sensor and methods |
| CN102901981A (en) * | 2012-10-22 | 2013-01-30 | 中国船舶重工集团公司第七一五研究所 | High hydrostatic pressure-resistant small piezoelectric hydrophone and manufacturing method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108645504A (en) * | 2018-04-02 | 2018-10-12 | 中国人民解放军海军工程大学 | A kind of sound insulation type ground acoustic pressure electric transducer |
| CN108645504B (en) * | 2018-04-02 | 2020-02-11 | 中国人民解放军海军工程大学 | Sound insulation type earth sound piezoelectric sensor |
| CN117277866A (en) * | 2023-11-22 | 2023-12-22 | 吉林大学 | Four-degree-of-freedom trans-scale stepping actuator based on piezoelectric driving |
| CN117277866B (en) * | 2023-11-22 | 2024-01-23 | 吉林大学 | Four-degree-of-freedom trans-scale stepping actuator based on piezoelectric driving |
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| CN106932817B (en) | 2018-11-30 |
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