CN109708744A - Double oscillator solid acoustic sensor devices - Google Patents
Double oscillator solid acoustic sensor devices Download PDFInfo
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- CN109708744A CN109708744A CN201910171325.9A CN201910171325A CN109708744A CN 109708744 A CN109708744 A CN 109708744A CN 201910171325 A CN201910171325 A CN 201910171325A CN 109708744 A CN109708744 A CN 109708744A
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- 238000003199 nucleic acid amplification method Methods 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 claims description 14
- 230000003287 optical effect Effects 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 6
- 230000005236 sound signal Effects 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 3
- 239000013307 optical fiber Substances 0.000 claims description 3
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- 239000003989 dielectric material Substances 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000013517 stratification Methods 0.000 description 2
- 208000025274 Lightning injury Diseases 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The present invention relates to a kind of double oscillator solid acoustic sensor devices, including double oscillator solid acoustic sensors, double oscillator solid acoustic sensors include resonant cavity, the ultralow frequency oscillator for picking up the ultralow frequency voice signal propagated by solid dielectric, and the medium-high frequency oscillator for picking up the medium-high frequency voice signal propagated by solid dielectric are equipped in resonant cavity；Ultralow frequency oscillator includes the first piezoelectric ceramic piece and single cantilever spring, and the first piezoelectric ceramic piece is suspended vacantly by cantilever spring single-point in the resonant cavity；Medium-high frequency oscillator includes the second piezoelectric ceramic piece, thimble and several conduct vibrations springs, and the second piezoelectric ceramic piece is suspended vacantly by conduct vibrations spring multiple spot in resonant cavity, and the syringe needle of thimble passes through resonant cavity and peaks at the second piezoelectric ceramics on piece.The present invention hidden can be embedded in the solid dielectrics such as underground, wall and effectively be picked up to spatial sound, and have Hz-KHz wide, have the advantages of high sensitivity to the voice signal of basic, normal, high frequency range.
Description
Technical field
The invention belongs to spatial sound detection technology field more particularly to a kind of double oscillator solid acoustic sensor devices.
Background technique
Existing space sound-detection gear relies on air borne, picks up spatial sound, such as is embedded in underground, wall admittedly
In body, due to solid dielectric constitute acoustic barrier, the space sound intensity received be it is very faint, can not hear earth's surface or wall
Sound outside face.
In view of this, needing a kind of space that hidden can be embedded in and pick up spatial sound in the solid dielectrics such as underground, wall
Toning equipment.
Summary of the invention
The purpose of the present invention is to provide a kind of double oscillator solid acoustic sensor devices, by it is hidden be embedded in underground,
Spatial sound is effectively picked up in the solid dielectrics such as wall.
It is double the present invention provides a kind of double oscillator solid acoustic sensor devices, including double oscillator solid acoustic sensors
Oscillator solid acoustic sensor includes resonant cavity, is equipped in resonant cavity for picking up the ultralow frequency sound letter propagated by solid dielectric
Number ultralow frequency oscillator, and for pick up by solid dielectric propagate medium-high frequency voice signal medium-high frequency oscillator；
Ultralow frequency oscillator includes the first piezoelectric ceramic piece and single cantilever spring, and the first piezoelectric ceramic piece passes through cantilever spring single-point
It is suspended vacantly in the resonant cavity；
Medium-high frequency oscillator includes that the second piezoelectric ceramic piece, thimble and several conduct vibrations springs, the second piezoelectric ceramic piece pass through
Conduct vibrations spring multiple spot is suspended vacantly in resonant cavity, and the syringe needle of thimble passes through resonant cavity and peaks at the second piezoelectric ceramics on piece.
Further, resonant cavity is the cylindrical structure made of thin-wall metal.
Further, which further includes signal processing apparatus, signal processing apparatus packet
Include sequentially connected summation amplifying circuit, automatic gain control circuit and filter amplification circuit；
Summation amplifying circuit is for carrying out summation amplification to ultralow frequency voice signal, the medium-high frequency voice signal of pickup；From
Dynamic gain control circuit, for carrying out automatic growth control to voice signal；Filter amplification circuit is used to carry out voice signal
Filter and amplification.
Double oscillator solid acoustic sensor devices further include fiber transmission device, fiber transmission device and filter and amplification electricity
Road connection, for converting optical signal output for sound electric signal.
Further, signal processing apparatus is equipped with AC power source power supply interface.
Compared with prior art the beneficial effects of the present invention are:
The solid acoustic sensor that the present invention is rung using the wideband that double oscillators are constituted, hidden can be embedded in underground, wall etc.
In solid dielectric, by the principle of solid-borne sound transmission, cavity resonant, the solids such as geological stratification, wall is propagated as voice pickup and are situated between
Matter, since solid-borne sound transmission spread speed is fast, decaying is few, and double oscillator pickup structures built in the present invention, make acoustic sensor frequency
It is wide to ring range, has high sensitivity to the voice signal of basic, normal, high frequency range.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the solid acoustic sensor that the wideband that double oscillators of the invention are constituted is rung；
Fig. 2 is the structural schematic diagram for the solid acoustic sensor device that the wideband that double oscillators of the invention are constituted is rung；
Fig. 3 is the circuit diagram of one embodiment of signal processing apparatus of the present invention.
Specific embodiment
The present invention is described in detail for each embodiment shown in reference to the accompanying drawing, but it should be stated that, these
Embodiment is not limitation of the present invention, those of ordinary skill in the art according to these embodiments made by function, method,
Or equivalent transformation or substitution in structure, all belong to the scope of protection of the present invention within.
Join shown in Fig. 1, present embodiments provides a kind of double oscillator solid acoustic sensor devices, including double oscillator solid sound
Dependent sensor, double oscillator solid acoustic sensors include resonant cavity 11, are equipped in resonant cavity 11 and are passed for picking up by solid dielectric
The ultralow frequency oscillator for the ultralow frequency voice signal broadcast, and for picking up in the medium-high frequency voice signal propagated by solid dielectric
High frequency oscillator.
Ultralow frequency oscillator includes that the first piezoelectric ceramic piece 12 and single cantilever spring 13, the first piezoelectric ceramic piece 12 pass through cantilever
13 single-point of spring is suspended vacantly in resonant cavity 11；11 resonance of resonant cavity to depended on solid vibration signal when, pass through cantilever spring
13 pass to vibration signal on the first piezoelectric ceramic piece 12, make the first piezoelectric ceramic piece 12 that vibration displacement occur, and generate sound letter
Number, the ultralow frequency oscillator structure to step, dig that the ultralow frequencies voice signal such as to pound sensitive.
Medium-high frequency oscillator includes the second piezoelectric ceramic piece 14, thimble 15 and several conduct vibrations springs 16, the second piezoelectric ceramics
Piece 14 is suspended vacantly by 16 multiple spot of conduct vibrations spring in resonant cavity 11, and the syringe needle of thimble 15 passes through resonant cavity 11 and peaks at second
On piezoelectric ceramic piece 14；11 resonance of resonant cavity to depended on solid vibration signal when, by thimble 15 to the second piezoelectric ceramics
Piece 14 apply with the pressure of vibration signal, generate voice signal, the medium-high frequency oscillator structure to speak, the medium-high frequencies ring such as motor vehicle
Border voice signal is sensitive.
In double oscillator solid acoustic sensors, the solid acoustic sensor rung using the wideband that double oscillators are constituted can be hidden
It covers and is embedded in the solid dielectrics such as underground, wall, by the principle of solid-borne sound transmission, cavity resonant, by solids such as geological stratification, walls
As voice pickup propagation medium, since solid-borne sound transmission spread speed is fast, decaying is few, and double oscillator pickup knots built in the present invention
Structure keeps acoustic sensor Hz-KHz wide, has high sensitivity to the voice signal of basic, normal, high frequency range.
In the present embodiment, resonant cavity 11 be the cylindrical structure made of thin-wall metal, built-in ultralow frequency oscillator and in
High frequency oscillator is embedded in the solids such as underground, wall, by the principle of solid-borne sound transmission, cavity resonant, resonant to institute according to
Vibration signal is applied to the of intra resonant cavity by cantilever spring in resonant cavity and thimble by the vibration signal of attached solid respectively
One piezoelectric ceramic piece and the second piezoelectric ceramics on piece generate voice signal.Ultralow frequency oscillator emphasis pick up step, dig pound etc. it is ultralow
Frequency voice signal, the pickup of medium-high frequency oscillator emphasis speaks, the medium-high frequencies environmental sound signal such as motor vehicle.
Join shown in Fig. 2, Fig. 3, which further includes signal processing apparatus, signal processing device
It sets including sequentially connected summation amplifying circuit 21, automatic gain control circuit 22 and filter amplification circuit 23, it is double for receiving
The two-way voice signal that oscillator solid acoustic sensor picks up, carries out summation amplification, automatic growth control, filtering and amplification, defeated
The entire audio signal of basic, normal, high wide frequency ranges out.
Specifically, the two-way voice signal that summation amplifying circuit 21 picks up pickup structure in resonant cavity carries out summation and puts
Greatly, voice signal is exported.Due in resonant cavity two kinds of pickup structures to each frequency range voice signal sensitivity different, thimble-type pickup
Structure to speak, the medium-high frequencies environmental sound signal such as motor vehicle it is sensitive, cantilevered pickup structure to step, dig and the low-frequency sounds such as pound
Signal is sensitive, and two paths of signals is summed by summation amplifying circuit and is amplified, keeps acoustic sensor Hz-KHz wide, to basic, normal, high
The voice signal of frequency range has high sensitivity.
Automatic gain control circuit 22 carries out automatic growth control to voice signal.Spirit is picked up to improve distal end faint sound
Sensitivity need to carry out magnification at high multiple to voice signal and work as proximal end by the way that automatic gain control circuit is added in signal processing apparatus
When the voice signal picked up is too strong, automatic gain control circuit reduces amplification factor automatically, is in sound signal intensity and closes
It manages in section, distortion caused by avoiding sound too strong.
Filter amplification circuit 23 is filtered amplification to voice signal, improves sound quality.
In the present embodiment, which further includes fiber transmission device 3, optical fiber transmission dress
It sets 3 to connect with filter amplification circuit 23, for converting optical signal output for sound electric signal.Fiber transmission device is by light modulation
Circuit and optical transmitter module composition, convert electrical signals to optical signal output.Since field problem of lightning is serious, when field is laid
Optical fiber transmission signal can be used, optical signal is converted electrical signals to by optical modulating circuit, carries out letter by optic fiber emission modules
Number output.
In the present embodiment, signal processing apparatus 3 is equipped with AC power source power supply interface.To guarantee field remote conveying power transmission
Source, and field damage as caused by lightning stroke is prevented, AC power source power supply can be used in signal processing apparatus.
The series of detailed descriptions listed above only for feasible embodiment of the invention specifically
Protection scope bright, that they are not intended to limit the invention, it is all without departing from equivalent implementations made by technical spirit of the present invention
Or change should all be included in the protection scope of the present invention.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.
Claims (5)
1. a kind of double oscillator solid acoustic sensor devices, which is characterized in that described double including double oscillator solid acoustic sensors
Oscillator solid acoustic sensor includes resonant cavity, is equipped in the resonant cavity for picking up the ultralow frequency sound propagated by solid dielectric
The ultralow frequency oscillator of sound signal, and the medium-high frequency oscillator for picking up the medium-high frequency voice signal propagated by solid dielectric；
The ultralow frequency oscillator includes the first piezoelectric ceramic piece and single cantilever spring, and first piezoelectric ceramic piece passes through described outstanding
Arm spring single-point is suspended vacantly in the resonant cavity；
The medium-high frequency oscillator includes the second piezoelectric ceramic piece, thimble and several conduct vibrations springs, second piezoelectric ceramic piece
It is suspended vacantly by the conduct vibrations spring multiple spot in the resonant cavity, the syringe needle of the thimble passes through the resonant cavity and peaks at
The second piezoelectric ceramics on piece.
2. double oscillator solid acoustic sensor devices according to claim 1, which is characterized in that the resonant cavity is by thin
Cylindrical structure made of wall metal.
3. double oscillator solid acoustic sensor devices according to claim 1 or 2, which is characterized in that further include at signal
Device is managed, the signal processing apparatus includes sequentially connected summation amplifying circuit, automatic gain control circuit and filter and amplification
Circuit；
The summation amplifying circuit is for carrying out summation amplification to ultralow frequency voice signal, the medium-high frequency voice signal of pickup；Institute
Automatic gain control circuit is stated, for carrying out automatic growth control to voice signal；The filter amplification circuit is used for sound
Signal is filtered amplification.
4. double oscillator solid acoustic sensor devices according to claim 3, which is characterized in that further include optical fiber transmission dress
It sets, the fiber transmission device is connect with the filter amplification circuit, for converting optical signal output for sound electric signal.
5. double oscillator solid acoustic sensor devices according to claim 3, which is characterized in that the signal processing apparatus
Equipped with AC power source power supply interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910171325.9A CN109708744B (en) | 2019-03-07 | 2019-03-07 | Double-vibrator solid sound sensor device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910171325.9A CN109708744B (en) | 2019-03-07 | 2019-03-07 | Double-vibrator solid sound sensor device |
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| CN109708744A true CN109708744A (en) | 2019-05-03 |
| CN109708744B CN109708744B (en) | 2024-05-24 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112763864A (en) * | 2020-12-23 | 2021-05-07 | 深圳供电局有限公司 | GIS optical fiber type ultrasonic partial discharge sensor |
| CN112882002A (en) * | 2021-01-19 | 2021-06-01 | 北京世纪之星应用技术研究中心 | Pickup and aircraft detection system |
| CN114112010A (en) * | 2022-01-26 | 2022-03-01 | 青岛国数信息科技有限公司 | Acoustic measurement unit and device for ultra-low frequency underwater acoustic signal detection |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1512819A (en) * | 2002-12-31 | 2004-07-14 | 北京世纪之星应用技术研究中心 | Underground sound sensitive sensor |
| JP2008039654A (en) * | 2006-08-09 | 2008-02-21 | Axiom Co Ltd | Vibration sensor using ultrasonic waves |
| JP2013032929A (en) * | 2011-08-01 | 2013-02-14 | Nec Tokin Corp | Vibration detection method |
| WO2013027736A1 (en) * | 2011-08-24 | 2013-02-28 | 日本電気株式会社 | Piezoelectric vibration sensor |
| CN106225912A (en) * | 2016-09-13 | 2016-12-14 | 西安工业大学 | Underwater sound sensor |
| CN107246910A (en) * | 2017-06-15 | 2017-10-13 | 中北大学 | MEMS three-dimensional co-vibrating type vector hydrophones based on piezoresistive effect |
| CN107907205A (en) * | 2017-10-30 | 2018-04-13 | 中国科学院声学研究所 | A kind of wireless passive sonic surface wave vibrating sensor |
| CN209416488U (en) * | 2019-03-07 | 2019-09-20 | 北京世纪之星应用技术研究中心 | Double oscillator solid acoustic sensor devices |
-
2019
- 2019-03-07 CN CN201910171325.9A patent/CN109708744B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1512819A (en) * | 2002-12-31 | 2004-07-14 | 北京世纪之星应用技术研究中心 | Underground sound sensitive sensor |
| JP2008039654A (en) * | 2006-08-09 | 2008-02-21 | Axiom Co Ltd | Vibration sensor using ultrasonic waves |
| JP2013032929A (en) * | 2011-08-01 | 2013-02-14 | Nec Tokin Corp | Vibration detection method |
| WO2013027736A1 (en) * | 2011-08-24 | 2013-02-28 | 日本電気株式会社 | Piezoelectric vibration sensor |
| CN106225912A (en) * | 2016-09-13 | 2016-12-14 | 西安工业大学 | Underwater sound sensor |
| CN107246910A (en) * | 2017-06-15 | 2017-10-13 | 中北大学 | MEMS three-dimensional co-vibrating type vector hydrophones based on piezoresistive effect |
| CN107907205A (en) * | 2017-10-30 | 2018-04-13 | 中国科学院声学研究所 | A kind of wireless passive sonic surface wave vibrating sensor |
| CN209416488U (en) * | 2019-03-07 | 2019-09-20 | 北京世纪之星应用技术研究中心 | Double oscillator solid acoustic sensor devices |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112763864A (en) * | 2020-12-23 | 2021-05-07 | 深圳供电局有限公司 | GIS optical fiber type ultrasonic partial discharge sensor |
| CN112763864B (en) * | 2020-12-23 | 2023-08-04 | 深圳供电局有限公司 | GIS optical fiber type ultrasonic partial discharge sensor |
| CN112882002A (en) * | 2021-01-19 | 2021-06-01 | 北京世纪之星应用技术研究中心 | Pickup and aircraft detection system |
| CN114112010A (en) * | 2022-01-26 | 2022-03-01 | 青岛国数信息科技有限公司 | Acoustic measurement unit and device for ultra-low frequency underwater acoustic signal detection |
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| CN109708744B (en) | 2024-05-24 |
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