CN209542852U - Piezoelectric ceramics shallow-layer exploration with complete waves energy converter - Google Patents
Piezoelectric ceramics shallow-layer exploration with complete waves energy converter Download PDFInfo
- Publication number
- CN209542852U CN209542852U CN201920188164.XU CN201920188164U CN209542852U CN 209542852 U CN209542852 U CN 209542852U CN 201920188164 U CN201920188164 U CN 201920188164U CN 209542852 U CN209542852 U CN 209542852U
- Authority
- CN
- China
- Prior art keywords
- pedestal
- piezo tube
- lead
- piezo
- wall
- 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.)
- Expired - Fee Related
Links
Landscapes
- Transducers For Ultrasonic Waves (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The utility model discloses piezoelectric ceramics shallow-layer exploration with complete waves energy converters, the inside of piezoelectric ceramics shallow-layer exploration with complete waves energy converter uses piezo tube to replace piezoelectric patches as acoustic-electric conversion equipment, mass block combined with piezo tube after intrinsic frequency and actual signal frequency it is close, receiving sensitivity is high.Using multiple piezo tubes, it is attached by the way of mechanical series or parallel connection, adjustable mechanical oscillation intrinsic frequency, to increase receiving sensitivity.The series connection and parallel connection of electric signal are used to piezo tube, when series connection is that signal is added, and voltage is bigger, it is that electric current is added when in parallel, electric current is bigger, and the electrical signal amplitude converted using the energy converter of piezo tube to high-frequency vibration is larger, frequency is higher, higher to the resolution ratio on stratum.It is capable of the formation acoustic velocity and wave impedance of effectively measuring underground shallow layer 10-200 meters of media.
Description
Technical field
The instrument more particularly to one kind of the utility model shallow surface exploration construction medium wave impedance measurement and evaluation can have
Effect ground measures underground shallow layer 10-200 meters of formation acoustic velocity and the high-density acquisition of wave impedance, and high frequency high-resolution vibrates transducing
Device.
Background technique
In existing seismic exploration technology, transmitting and reception are on ground.Probe has moving-coil type and piezoelectricity pottery
Ceramic pad type.How probe is the problem is that improve resolution ratio and sensitivity.The intrinsic frequency of moving-coil type probe is relatively low, only
Several hundred hertz.Several hundred hertz of low frequency signal can only be received, the high-frequency signal of several kHz cannot be received, therefore it is received to pop one's head in
Signal wavelength is long, and resolution ratio is lower, is not able to satisfy shallow layer exploration to high-resolution requirement.And piezoelectric ceramic piece is consolidated
There is frequency relatively high, there are several hundred kHz to several megahertzs, wavelength is shorter, and resolution ratio is relatively high.But actual signal does not have
Have so high frequency, so relatively low with piezoelectric patches receiving sensitivity, need with pre-amplification circuit to received signal into
Row amplification.
Summary of the invention
The purpose of the utility model is to overcome traditional moving-coil type probe, intrinsic frequency (500Hz) relatively low and piezoelectric ceramics
Chip probe intrinsic frequency (2MHz) is higher, keeps off with actual signal frequency (1kHz-10kHz), the low disadvantage of sensitivity,
A kind of shallow-layer exploration with complete waves energy converter of piezo tube production is provided, the high-frequency signal of 1kHz to 10kHz is measured.Piezo tube it is intrinsic
Frequency is 1kHz to 10kHz, and close with the frequency of high-resolution signal, receiving sensitivity is relatively high, does not need amplifying circuit, connects
The wavelength of the collection of letters number is shorter, and spatial resolution is relatively high, can satisfy shallow layer exploration to the needs of resolution ratio.
Piezoelectric ceramics shallow-layer exploration with complete waves energy converter, including plastic circular pedestal, it is solid on the plastic circular pedestal
Surely there is a cylindrical shell, be provided with a piezo tube along the vertical direction among the pedestal in the cylindrical shell,
It is coated with electrode respectively on the inner and outer wall of the piezo tube, the piezo tube top braces are provided with a cylinder
Form quality gauge block, the central axes of mass block are overlapped with the central axes of piezo tube；In the intermediate difference of the pedestal and mass block
It is provided with an intermediate connecting hole, a screw passes through the intermediate connecting hole on intermediate connecting hole and mass block on pedestal and leads to
It crosses nut and gasket is fixed on mass block so that pedestal, mass block and piezo tube to be fixed together；Shell top surface and
Top surface via hole and side via hole are had on side wall, and inner wall lead is welded on the piezoelectricity inside pipe wall, it is described
Inner wall lead is pierced by from top surface via hole, is welded with outer wall lead on the outer wall of piezo tube, and the outer wall lead is from side mistake
Hole is pierced by, and inner wall lead and outer wall lead are exported as signal wire.
Piezoelectric ceramics shallow-layer exploration with complete waves energy converter, including plastic circular pedestal, it is solid on the plastic circular pedestal
Surely there is a cylindrical shell, be provided with a piezo tube along the vertical direction among the pedestal in the cylindrical shell,
Use piezo tube as the switching device of vibration and electricity, piezo tube is longitudinal polarization, is coated with respectively on the top and bottom of piezo tube
Electrode is provided with a cylindrical mass block, the central axes of mass block and the central axes weight of piezo tube in piezo tube top braces
It closes, centre is separately installed with by directly contact between mass block and piezo tube roof and between piezo tube bottom wall and pedestal
Copper electrode under copper electrode and disc-shaped on disc-shaped with holes, on disc-shaped under copper electrode and disc-shaped copper electrode respectively with piezoelectricity
The electrode of pipe top and bottom is connected by contact, is respectively arranged on copper electrode under copper electrode and disc-shaped on disc-shaped
Pick up the ears and under pick up the ears；The centre of pedestal and mass block has an intermediate connecting hole, and a screw passes through on pedestal
Intermediate connecting hole on intermediate connecting hole and mass block is simultaneously fixed on mass block by nut and gasket with by pedestal, quality
Block and piezo tube are fixed together；Top surface via hole and side via hole are had on the top surface of shell and side wall, in institute
Lead is welded on picking up the ears on the disc-shaped copper electrode for the piezo tube upper end stated, the upper lead is worn from top surface via hole
Out, lower lead is welded on picking up the ears under the disc-shaped copper electrode of piezo tube lower end, the lower lead is worn from side via hole
Out, the upper lead and lower lead are exported as signal wire.
Piezoelectric ceramics shallow-layer exploration with complete waves energy converter, including plastic circular pedestal, it is solid on the plastic circular pedestal
Surely there is a cylindrical shell, be arranged along the vertical direction among the pedestal in the cylindrical shell there are two piezo tube,
Two piezo tubes are longitudinally coaxial to stack together up and down, and two piezo tubes are radial polariseds, in two piezo tubes
It is coated with electrode respectively on wall and outer wall, the top braces for the piezo tube being located above are provided with a cylindrical mass block, matter
The central axes of gauge block are overlapped with the central axes of piezo tube, in the intersection and pedestal of two piezo tubes and underlying piezoelectricity
Copper electrode, first lead under copper electrode and disc-shaped are separately installed on the disc-shaped of middle with hole by directly contact between pipe
One end and the inner wall of underlying piezo tube be weldingly connected and the other end is welded together with copper electrode on disc-shaped, second
It picks up the ears to be weldingly connected on one end of lead and upper copper electrode and the other end and the outer wall for the piezo tube being located above is welded in one
It rises；The centre of pedestal and mass block has an intermediate connecting hole, and a screw passes through the intermediate connecting hole on pedestal
And it intermediate connecting hole on mass block and is bolted on mass block to fix pedestal, mass block and piezo tube
Together；Top surface via hole and side via hole are had on the top surface of shell and side wall, in the pressure being located above
Inner wall lead is welded on the inner wall of fulgurite, the inner wall lead is pierced by from top surface via hole, in underlying piezo tube
Outer wall lead is welded on outer wall, the outer wall lead is pierced by from side via hole, and the inner wall lead and outer wall lead are used
Make signal wire output.
Piezoelectric ceramics shallow-layer exploration with complete waves energy converter, including plastic circular pedestal, it is solid on the plastic circular pedestal
Surely there is a cylindrical shell, be arranged along the vertical direction among the pedestal in the cylindrical shell there are two piezo tube,
Two piezo tubes are longitudinally coaxial to stack together up and down, and two piezo tubes are radial polariseds, in two piezo tubes
It is coated with electrode respectively on side and lateral surface, between the intersection and pedestal and underlying piezo tube of two piezo tubes
By directly contacting copper electrode, the weldering of first lead one end under copper electrode and disc-shaped on the disc-shaped for be separately installed with middle with hole
On the outer wall of underlying piezo tube and the other end is welded on the outer wall for the piezo tube being located above, second lead one end
It is welded on the inner wall of underlying piezo tube and the other end is welded on the inner wall for the piezo tube being located above；Pedestal and matter
The centre of gauge block has an intermediate connecting hole, and a screw passes through on intermediate connecting hole and mass block on pedestal
Intermediate connecting hole is simultaneously bolted on mass block so that pedestal, mass block and piezo tube to be fixed together；In shell
Top surface and side wall on have top surface via hole and side via hole, welded on the inner wall of the piezo tube being located above
It is connected to inner wall lead, the inner wall lead is pierced by from top surface via hole；It is welded on the outer wall for the piezo tube being located above outer
Wall lead, the outer wall lead are pierced by from side via hole, and the inner wall lead and outer wall lead are exported as signal wire.
Piezoelectric ceramics shallow-layer exploration with complete waves energy converter, including plastic circular pedestal, it is solid on the plastic circular pedestal
Surely there is a cylindrical shell, be arranged along the vertical direction among the pedestal in the cylindrical shell there are two piezo tube,
Two piezo tubes are longitudinally coaxial to stack together up and down, and two piezo tubes are longitudinal polarization, the upper end of two piezo tubes
Face and lower end surface are coated with electrode respectively, and superposed piezo tube upper surface is anode and lower end surface is cathode, are located at lower part
Piezo tube upper surface be anode and lower end surface is cathode, the lower end surface of upper piezoelectric pipe and the upper surface of lower piezoelectric pipe are logical
It crosses directly contact to be connected, the disc-shaped of middle with hole is installed between pedestal and underlying piezo tube by directly contact
Lower copper electrode, by directly contacting copper on the disc-shaped for being equipped with middle with hole between mass block and the piezo tube being located above
Electrode；The centre of pedestal and mass block has an intermediate connecting hole, and a screw passes through the intermediate connection on pedestal
Intermediate connecting hole on hole and mass block is simultaneously bolted on mass block to consolidate pedestal, mass block and piezo tube
It is scheduled on together；Top surface via hole and side via hole, the copper on the disc-shaped are had on the top surface of shell and side wall
It is welded with first lead on the picking up the ears of electrode, the first lead is pierced by from the top surface via hole of shell, in the disc-shaped
It is welded with the second lead on the picking up the ears piece of lower copper electrode, second lead is pierced by from side via hole, the first lead
It is exported with the second lead as signal wire.
Piezoelectric ceramics shallow-layer exploration with complete waves energy converter, including plastic circular pedestal, it is solid on the plastic circular pedestal
Surely there is a cylindrical shell, be arranged along the vertical direction among the pedestal in the cylindrical shell there are two piezo tube,
Two piezo tubes are longitudinally coaxial to stack together up and down, and two piezo tubes are longitudinal polarization, the upper end of two piezo tubes
Face and lower end surface are coated with electrode respectively, and the upper surface of superposed piezo tube is cathode and lower end surface is anode, under being located at
The upper surface of the piezo tube in portion is anode and lower end surface is cathode, by directly contacting peace between pedestal and lower section piezo tube
Equipped with copper electrode under disc-shaped, copper electrode among disc-shaped is installed in the junction of two piezo tubes, in mass block and top
Copper electrode on disc-shaped is installed, the anode of top piezo tube passes through intermediate copper electricity with the anode of lower section piezo tube between piezo tube
Pole is in contact, and the upper and other end of picking up the ears that one end of first lead is welded on lower copper electrode is welded on picking up the ears for copper electrode
On；The centre of pedestal and mass block has an intermediate connecting hole, and a screw passes through the intermediate connecting hole on pedestal
And it intermediate connecting hole on mass block and is bolted on mass block to fix pedestal, mass block and piezo tube
Together；Top surface via hole and side via hole are had on the top surface of shell and side wall, in the side of the upper copper electrode
Upper lead wire is welded on ear, the upper lead wire is pierced by from the top surface via hole of shell, in the upper weldering of picking up the ears of intermediate copper electrode
It is connected to middle part lead, the middle part lead is pierced by from side via hole, and the upper lead wire and middle part lead are used as signal wire
Output.
The beneficial effects of the utility model are:
1. the lateralarea of piezo tube is big, radial dielectric displacement DrThe quantity of electric charge Q that opposite side Line Integral obtains is big, and electric current I is electricity
Lotus amount Q also increases the derivative of time accordingly.Amplitude with current related output signal also increases, high sensitivity.
2. the intrinsic frequency of the natural frequency ratio piezoelectric patches of piezo tube is much lower, intrinsic frequency is in 1 kHz to 10 kilo hertzs
It is close with the high-frequency signal of high-resolution exploration between hereby.At this point, piezo tube work is in resonance state, equivalent elastic coefficient is small,
It is easy vibration, vibration displacement is big, high sensitivity.
3. the diameter of piezo tube, wall thickness, height and counterweight are all adjustable, the need of different high-resolution explorations can be applicable in
It wants.
Detailed description of the invention
Fig. 1 is the structure chart of the piezoelectric ceramics shallow-layer exploration with complete waves energy converter of the utility model；
Fig. 2 is the shallow-layer piezoelectric ceramics exploration with complete waves sonde configuration figure using a piezo tube and piezo tube longitudinal polarization；
Fig. 3 is using two piezo tubes and piezo tube radial polarised, and when solder taul is made pottery using the shallow-layer piezoelectricity of series system
Porcelain exploration with complete waves sonde configuration figure；
Fig. 4 is using two piezo tubes and piezo tube radial polarised, and when solder taul is made pottery using the shallow-layer piezoelectricity of parallel way
Porcelain exploration with complete waves sonde configuration figure；
Fig. 5 is using two piezo tubes and piezo tube longitudinal polarization, and when solder taul is made pottery using the shallow-layer piezoelectricity of series system
Porcelain exploration with complete waves sonde configuration figure；
Fig. 6 is using two piezo tubes and piezo tube longitudinal polarization, and when solder taul is made pottery using the shallow-layer piezoelectricity of parallel way
Porcelain exploration with complete waves sonde configuration figure.
Specific embodiment
The utility model is described in detail in the following with reference to the drawings and specific embodiments.
As shown in Fig. 1, the piezoelectric ceramics shallow-layer exploration with complete waves energy converter of the utility model, including plastic circular pedestal 1,
A cylindrical shell 3 is fixed on the plastic circular pedestal 1, among the pedestal 1 in the cylindrical shell 3
It is provided with a piezo tube along the vertical direction, electrode is coated with respectively on the inner wall 5 and outer wall 6 of the piezo tube, described
Piezo tube top braces be provided with a cylindrical mass block 2, the central axes of mass block 2 are overlapped with the central axes of piezo tube.
An intermediate connecting hole is had in the centre of the pedestal 1 and mass block 2, a screw 4 passes through bottom
The intermediate connecting hole on intermediate connecting hole and mass block on seat 1 and pass through nut and gasket be fixed on mass block 2 with incite somebody to action
Pedestal 1, mass block 2 and piezo tube are fixed together.
Top surface via hole and side via hole are had on the top surface of shell 3 and side wall, in the piezoelectricity inside pipe wall 5
On be welded with inner wall lead 8, the inner wall lead 8 is pierced by from top surface via hole.Outer wall is welded on the outer wall of piezo tube to draw
Line 7, the outer wall lead 7 are pierced by from side via hole.Inner wall lead 8 and outer wall lead 7 are exported as signal wire.
As shown in Fig. 2, the piezoelectric ceramics shallow-layer exploration with complete waves energy converter of the utility model, including plastic circular pedestal 1,
A cylindrical shell 3 is fixed on the plastic circular pedestal 1, among the pedestal 1 in the cylindrical shell 3
It is provided with a piezo tube along the vertical direction, uses piezo tube as the switching device of vibration and electricity.Piezo tube is longitudinal polarization, pressure
It is coated with electrode respectively on the top and bottom of fulgurite.Piezo tube top braces are provided with a cylindrical mass block 2, mass block
2 central axes are overlapped with the central axes of piezo tube.Between mass block 2 and piezo tube roof and piezo tube bottom wall and pedestal 1
Between copper electrode 8 under copper electrode 5 and disc-shaped is separately installed on the disc-shaped of middle with hole by directly contact.On disc-shaped
Copper electrode 8 is connected with the electrode of piezo tube top and bottom by contacting respectively under copper electrode 5 and disc-shaped.The copper on disc-shaped
Be respectively arranged on copper electrode 8 under electrode 5 and disc-shaped pick up the ears 10 and under pick up the ears 11.
The centre of pedestal 1 and mass block 2 has an intermediate connecting hole, and a screw 4 passes through on pedestal 1
Between connecting hole and intermediate connecting hole on mass block 2 and be fixed on mass block 2 by nut and gasket with by pedestal 1, matter
Gauge block 2 and piezo tube are fixed together.
Top surface via hole and side via hole are had on the top surface of shell 3 and side wall, in the piezo tube upper end
Disc-shaped copper electrode on pick up the ears to be welded with lead 9 on 10, the upper lead is pierced by from top surface via hole.Under piezo tube
It picks up the ears to be welded with lower lead 12 on 11 under the disc-shaped copper electrode at end, the lower lead is pierced by from side via hole.Described
Upper lead 9 and lower lead 12 are exported as signal wire.
As shown in Fig. 3, the piezoelectric ceramics shallow-layer exploration with complete waves energy converter of the utility model, including plastic circular pedestal 1,
A cylindrical shell 3 is fixed on the plastic circular pedestal 1, among the pedestal 1 in the cylindrical shell 3
There are two piezo tube, two piezo tubes are longitudinally coaxial to stack together up and down for setting along the vertical direction.Two piezo tubes
It is radial polarised.It is coated with electrode respectively on the inner and outer wall of two piezo tubes.In the top branch for the piezo tube being located above
Support is provided with a cylindrical mass block 2, and the central axes of mass block 2 are overlapped with the central axes of piezo tube.In two piezo tubes
It is separately installed on the disc-shaped of middle with hole between intersection and pedestal 1 and underlying piezo tube by directly contact
Copper electrode 5 under copper electrode 8 and disc-shaped.Series system, one end of first lead 15 and underlying pressure are used when solder taul
The inner wall 7 of fulgurite is weldingly connected and the other end is welded together with copper electrode 8 on disc-shaped, one end of the second lead 12 and upper copper
It picks up the ears 13 to be weldingly connected and the other end and the outer wall 11 for the piezo tube being located above are welded together on electrode 8.
The centre of pedestal 1 and mass block 2 has an intermediate connecting hole, and a screw 4 passes through on pedestal 1
Between connecting hole and intermediate connecting hole on mass block 2 and be bolted on mass block 2 with by pedestal 1, mass block 2 with
And piezo tube is fixed together.
Top surface via hole and side via hole are had on the top surface of shell 3 and side wall, are located above described
Inner wall lead 10 is welded on the inner wall 9 of piezo tube, the inner wall lead is pierced by from top surface via hole.In underlying piezoelectricity
Outer wall lead 14 is welded on the outer wall 6 of pipe, the outer wall lead is pierced by from side via hole.The inner wall lead and outer wall
Lead is exported as signal wire.
As shown in Fig. 4, the piezoelectric ceramics shallow-layer exploration with complete waves energy converter of the utility model, including plastic circular pedestal 1,
A cylindrical shell 3 is fixed on the plastic circular pedestal 1, among the pedestal 1 in the cylindrical shell 3
There are two piezo tube, two piezo tubes are longitudinally coaxial to stack together up and down for setting along the vertical direction.Two piezo tubes
It is radial polarised.It is coated with electrode respectively on the medial surface and lateral surface of two piezo tubes.Two piezo tubes intersection with
And 8 He of copper electrode on the disc-shaped of middle with hole is separately installed with by directly contact between pedestal and underlying piezo tube
Copper electrode 5 under disc-shaped.Parallel way is used when solder taul, 13 one end of first lead is welded in the outer wall of underlying piezo tube
On 6 and the other end is welded on the outer wall 10 for the piezo tube being located above.Second lead, 12 one end is welded in underlying piezoelectricity
On the inner wall 7 of pipe and the other end is welded on the inner wall 9 for the piezo tube being located above.
The centre of pedestal 1 and mass block 2 has an intermediate connecting hole, and a screw 4 passes through on pedestal
Between connecting hole and intermediate connecting hole on mass block 2 and be bolted on mass block 2 with by pedestal 1, mass block 2 with
And piezo tube is fixed together.
Top surface via hole and side via hole are had on the top surface of shell 3 and side wall, are located above described
Inner wall lead 16 is welded on the inner wall 9 of piezo tube, the inner wall lead is pierced by from top surface via hole.In the piezoelectricity being located above
Outer wall lead 15 is welded on the outer wall 10 of pipe, the outer wall lead is pierced by from side via hole.The inner wall lead and outer
Wall lead is exported as signal wire.
As shown in Fig. 5, the piezoelectric ceramics shallow-layer exploration with complete waves energy converter of the utility model, including plastic circular pedestal 1,
A cylindrical shell 3 is fixed on the plastic circular pedestal 1, among the pedestal 1 in the cylindrical shell 3
There are two piezo tube, two piezo tubes are longitudinally coaxial to stack together up and down for setting along the vertical direction.Two piezo tubes
It is longitudinal polarization.The upper surface and lower end surface of two piezo tubes are coated with electrode respectively.Superposed piezo tube upper surface is positive
Pole and lower end surface are cathode.Piezo tube upper surface positioned at lower part is anode and lower end surface is cathode, upper piezoelectric pipe
Lower end surface is connected with the upper surface of lower piezoelectric pipe by directly contacting.Pass through between pedestal 1 and underlying piezo tube
Directly contact is equipped with copper electrode 5 under the disc-shaped of middle with hole, by straight between mass block 2 and the piezo tube being located above
Contact is equipped with copper electrode 8 on the disc-shaped of middle with hole.
The centre of pedestal 1 and mass block 2 has an intermediate connecting hole, and a screw 4 passes through on pedestal 1
Between connecting hole and intermediate connecting hole on mass block 2 and be bolted on mass block 2 with by pedestal 1, mass block 2 with
And piezo tube is fixed together.
Top surface via hole and side via hole, the copper on the disc-shaped are had on the top surface of shell 3 and side wall
The picking up the ears of electrode 8 is welded with first lead 12 on 14.The first lead is pierced by from the top surface via hole of shell 3.Described
Under disc-shaped copper electrode 5 pick up the ears be welded with the second lead 11 on pieces 9, second lead is pierced by from side via hole, described
First lead and the second lead as signal wire export.
As shown in Fig. 6, the piezoelectric ceramics shallow-layer exploration with complete waves energy converter of the utility model, including plastic circular pedestal 1,
A cylindrical shell 3 is fixed on the plastic circular pedestal 1, among the pedestal 1 in the cylindrical shell 3
There are two piezo tube, two piezo tubes are longitudinally coaxial to stack together up and down for setting along the vertical direction.Two piezo tubes
It is longitudinal polarization.The upper surface and lower end surface of two piezo tubes are coated with electrode respectively.The upper surface of superposed piezo tube is
Cathode and lower end surface are anodes.Upper surface positioned at the piezo tube of lower part is anode and lower end surface is cathode.Pedestal 1 with
Copper electrode 5 under disc-shaped are equipped with by directly contact between the piezo tube of lower section, circle is installed in the junction of two piezo tubes
Copper electrode 6 among sheet, is equipped with copper electrode 7 on disc-shaped between mass block 2 and top piezo tube.Top piezo tube is just
The anode of pole and lower section piezo tube is in contact by intermediate copper electrode 6.One end of first lead 10 is welded on the side of lower copper electrode
On ear and the other end is welded on the picking up the ears on 8 of copper electrode 7.
The centre of pedestal 1 and mass block 2 has an intermediate connecting hole, and a screw 4 passes through on pedestal 1
Between connecting hole and intermediate connecting hole on mass block 2 and be bolted on mass block 2 with by pedestal 1, mass block 2 with
And piezo tube is fixed together.
Top surface via hole and side via hole are had on the top surface of shell 3 and side wall, in the upper copper electrode 7
It picks up the ears to be welded with upper lead wire 11 on 8, the upper lead wire 11 is pierced by from the top surface via hole of shell.In intermediate copper electrode 6
It picks up the ears to be welded with middle part lead 9 on 9, the middle part lead is pierced by from side via hole, and the upper lead wire 11 and middle part are drawn
Line is exported as signal wire.
The using effect of the utility model is described in detail below:
1 theoretical foundation
By probe placement on testee, when there is a vibration on testee, pedestal experiences vibration first.It should
Vibration can be the waveform of arbitrary shape, which can be right by Fourier series expansion at a series of superposition of SIN functions
The sine wave of each single-frequency, if its expression formula are as follows: ξ1=ξ10(ω)ejωt, ω is angular frequency in formula, and t is the time, and j is
Imaginary symbols, ξ10It is the amplitude of sine wave, ξ1It is displacement.The lower response popped one's head in of sine wave effect of each frequency is found out, so
The response of all frequencies is superimposed afterwards, the response popped one's head under any effect of vibration can be found out.
The response inputted to pop one's head in when single-frequency sine wave is asked below.Pedestal experiences the vibration of input sine wave first
It is dynamic, so the displacement of pedestal are as follows: ξ1=ξ10(ω)ejωt, which is transmitted to mass block by piezo tube, makes original place in resting position
Mass block generate displacement ξ2, elastic force suffered by mass block answers homogeneity gauge block directly proportional to the relative displacement of pedestal, it may be assumed that Fk=-KM
(ξ2-ξ1), KMFor the coefficient of elasticity of piezo tube.Mass block is also by the frictional resistance of air, frictional resistance homogeneity gauge block and pedestal
Relative velocity it is directly proportional, it may be assumed thatWherein RMFor coefficient of air resistance.Outside the conjunction that mass block is subject to
Power is FkWith FRSum, if the quality of mass block be MM, according to Newton's second law, can obtain:
If: ξ=ξ2-ξ1Above formula can be then changed to by the displacement for mass block relative to pedestal:
By ξ1=ξ10(ω)ejωtAbove formula is substituted into, is obtained:
The differential equation is solved, enables solution are as follows: ξ=Aeiωt, it is substituted into above formula, A is unknowm coefficient here, indicates amplitude.
:
It enables:Then:
It enables:
, then:
A is substituted into, is obtained:
As can be seen from the above equation, under sine input, mass block is also a sine wave, amplitude relative to the displacement of pedestal
ForPhase has offset compared with the phase of input sine wave.
Since the upper end of mass block and piezo tube is fixed together, so the displacement of the displacement of mass block and piezo tube upper end
Equally, therefore the displacement of piezo tube upper end are as follows:The lower end of piezo tube is connected with pedestal, so
The lower end of piezo tube is zero relative to pedestal displacement.When frequency is fixed, the displacement of piezo tube upper end and the displacement of inputted vibration
Amplitude proportional.When frequency is relatively low, ω ZM≈KM, work in area with flexible control, the amplitude and K of responseMIt is inversely proportional.With pressure
Fulgurite, coefficient of elasticity is smaller, and in resonance, coefficient of elasticity is minimum, sensitivity highest.
To piezoelectric circular, when external vibration is sine wave, the displacement ξ in the direction z of piezo tubezIt also is sine wave, it can be with
It releases, ξzMeet the differential equationWhereinωr=v/a v=Y0 E/ρ
Y0 EFor the Young's modulus of piezoelectricity tube material, ρ is the density of piezoelectricity tube material, and v is velocity of longitudinal wave, and a is the radius of piezo tube, and ω is
Angular frequency.
The differential equation is solved, can be obtained: ξz=C sin kz+D cos kz, C is unknowm coefficient here, and D is unknowm coefficient, two
A unknowm coefficient is found out after substituting into following boundary condition.
End movement is in known piezo tubeLower end movement is 0, so
Here l represents the height of piezo tube, can be in the hope of according to boundary condition above:,
Further according to ξzSeek the strain S in the direction zZ,
It can release, the dielectric displacement in the direction rWherein Y0 EFor the poplar of piezoelectricity tube material
Family name's modulus, σ are the Poisson's ratios of piezoelectric material,
d31It is the coefficient of piezoelectric equations,
By DrPeriphery is integrated, the charge of band on cylinder is obtained are as follows:
And
As can be seen from the above equation, when externally input angular frequency is fixed, the output electric current of piezo tube is with external input
Simple harmonic oscillation amplitude it is in a linear relationship.
Claims (6)
1. piezoelectric ceramics shallow-layer exploration with complete waves energy converter, it is characterised in that: including plastic circular pedestal, in the plastic circular
It is fixed with a cylindrical shell on pedestal, is provided with one along the vertical direction among the pedestal in the cylindrical shell
Piezo tube is coated with electrode on the inner and outer wall of the piezo tube respectively, is provided in the piezo tube top braces
One cylindrical mass block, the central axes of mass block are overlapped with the central axes of piezo tube；
An intermediate connecting hole is had in the centre of the pedestal and mass block, a screw passes through on pedestal
Between connecting hole and intermediate connecting hole on mass block and be fixed on mass block by nut and gasket with by pedestal, mass block
And piezo tube is fixed together；
Top surface via hole and side via hole are had on the top surface of shell and side wall, are welded on the piezoelectricity inside pipe wall
There is inner wall lead, the inner wall lead is pierced by from top surface via hole, and outer wall lead is welded on the outer wall of piezo tube, described
Outer wall lead is pierced by from side via hole, and inner wall lead and outer wall lead are exported as signal wire.
2. piezoelectric ceramics shallow-layer exploration with complete waves energy converter, it is characterised in that: including plastic circular pedestal, in the plastic circular
It is fixed with a cylindrical shell on pedestal, is provided with one along the vertical direction among the pedestal in the cylindrical shell
Piezo tube uses piezo tube as the switching device of vibration and electricity, and piezo tube is longitudinal polarization, divides on the top and bottom of piezo tube
It is not coated with electrode, piezo tube top braces are provided with a cylindrical mass block, in the central axes and piezo tube of mass block
Axis is overlapped, and is installed respectively between mass block and piezo tube roof and between piezo tube bottom wall and pedestal by directly contacting
There is on the disc-shaped of middle with hole copper electrode under copper electrode and disc-shaped, copper electrode is distinguished under copper electrode and disc-shaped on disc-shaped
It is connected by contact with the electrode of piezo tube top and bottom, it is set respectively on copper electrode under copper electrode and disc-shaped on disc-shaped
Be equipped with pick up the ears and under pick up the ears；
The centre of pedestal and mass block has an intermediate connecting hole, and a screw passes through the intermediate connecting hole on pedestal
And it intermediate connecting hole on mass block and is fixed on mass block by nut and gasket with by pedestal, mass block and piezoelectricity
Pipe is fixed together；
Top surface via hole and side via hole are had on the top surface of shell and side wall, the disk in the piezo tube upper end
Lead is welded on picking up the ears on shape copper electrode, the upper lead is pierced by from top surface via hole, the disk in piezo tube lower end
Lower lead is welded on picking up the ears under shape copper electrode, the lower lead is pierced by from side via hole, and the upper lead draws under
Line is exported as signal wire.
3. piezoelectric ceramics shallow-layer exploration with complete waves energy converter, it is characterised in that: including plastic circular pedestal, in the plastic circular
A cylindrical shell is fixed on pedestal, among the pedestal in the cylindrical shell along the vertical direction there are two settings
Piezo tube, two piezo tubes are longitudinally coaxial to stack together up and down, and two piezo tubes are radial polariseds, in two piezoelectricity
It is coated with electrode respectively on the inner and outer wall of pipe, the top braces for the piezo tube being located above are provided with a cylindrical mass
Block, the central axes of mass block are overlapped with the central axes of piezo tube, two piezo tubes intersection and pedestal and be located below
Piezo tube between copper electrode under copper electrode and disc-shaped is separately installed on the disc-shaped of middle with hole by directly contact, the
The inner wall of one end of one lead and underlying piezo tube is weldingly connected and copper electrode is welded in one on the other end and disc-shaped
It rises, picks up the ears to be weldingly connected on one end of the second lead and upper copper electrode and the outer wall of the other end and the piezo tube being located above
It is welded together；
The centre of pedestal and mass block has an intermediate connecting hole, and a screw passes through the intermediate connecting hole on pedestal
And it intermediate connecting hole on mass block and is bolted on mass block to fix pedestal, mass block and piezo tube
Together；
Top surface via hole and side via hole are had on the top surface of shell and side wall, in the piezo tube being located above
Inner wall on be welded with inner wall lead, the inner wall lead is pierced by from top surface via hole, in the outer wall of underlying piezo tube
On be welded with outer wall lead, the outer wall lead is pierced by from side via hole, and the inner wall lead and outer wall lead are used as letter
The output of number line.
4. piezoelectric ceramics shallow-layer exploration with complete waves energy converter, it is characterised in that: including plastic circular pedestal, in the plastic circular
A cylindrical shell is fixed on pedestal, among the pedestal in the cylindrical shell along the vertical direction there are two settings
Piezo tube, two piezo tubes are longitudinally coaxial to stack together up and down, and two piezo tubes are radial polariseds, in two piezoelectricity
It is coated with electrode respectively on the medial surface and lateral surface of pipe, in the intersection and pedestal of two piezo tubes and underlying piezoelectricity
Copper electrode, first lead under copper electrode and disc-shaped are separately installed on the disc-shaped of middle with hole by directly contact between pipe
One end is welded on the outer wall of underlying piezo tube and the other end is welded on the outer wall for the piezo tube being located above, and second draws
Line one end is welded on the inner wall of underlying piezo tube and the other end is welded on the inner wall for the piezo tube being located above；
The centre of pedestal and mass block has an intermediate connecting hole, and a screw passes through the intermediate connecting hole on pedestal
And it intermediate connecting hole on mass block and is bolted on mass block to fix pedestal, mass block and piezo tube
Together；
Top surface via hole and side via hole are had on the top surface of shell and side wall, in the piezo tube being located above
Inner wall on be welded with inner wall lead, the inner wall lead is pierced by from top surface via hole；In the outer wall for the piezo tube being located above
On be welded with outer wall lead, the outer wall lead is pierced by from side via hole, and the inner wall lead and outer wall lead are used as letter
The output of number line.
5. piezoelectric ceramics shallow-layer exploration with complete waves energy converter, it is characterised in that: including plastic circular pedestal, in the plastic circular
A cylindrical shell is fixed on pedestal, among the pedestal in the cylindrical shell along the vertical direction there are two settings
Piezo tube, two piezo tubes are longitudinally coaxial to stack together up and down, and two piezo tubes are longitudinal polarization, two piezo tubes
Upper surface and lower end surface be coated with electrode respectively, superposed piezo tube upper surface is anode and lower end surface is cathode, position
In the piezo tube upper surface of lower part be anode and lower end surface is cathode, and the lower end surface of upper piezoelectric pipe is upper with lower piezoelectric pipe
End face is connected by directly contact, is equipped with middle with hole by directly contact between pedestal and underlying piezo tube
Copper electrode under disc-shaped is equipped with the disk of middle with hole between mass block and the piezo tube being located above by directly contact
Copper electrode on shape；
The centre of pedestal and mass block has an intermediate connecting hole, and a screw passes through the intermediate connecting hole on pedestal
And it intermediate connecting hole on mass block and is bolted on mass block to fix pedestal, mass block and piezo tube
Together；
Top surface via hole and side via hole are had on the top surface of shell and side wall, the copper electrode on the disc-shaped
First lead is welded on picking up the ears, the first lead is pierced by from the top surface via hole of shell, the copper electricity under the disc-shaped
It is welded with the second lead on the picking up the ears piece of pole, second lead is pierced by from side via hole, the first lead and second
Lead is exported as signal wire.
6. piezoelectric ceramics shallow-layer exploration with complete waves energy converter, it is characterised in that: including plastic circular pedestal, in the plastic circular
A cylindrical shell is fixed on pedestal, among the pedestal in the cylindrical shell along the vertical direction there are two settings
Piezo tube, two piezo tubes are longitudinally coaxial to stack together up and down, and two piezo tubes are longitudinal polarization, two piezo tubes
Upper surface and lower end surface be coated with electrode respectively, the upper surface of superposed piezo tube is cathode and lower end surface is anode,
Upper surface positioned at the piezo tube of lower part is anode and lower end surface is cathode, by direct between pedestal and lower section piezo tube
Contact is equipped with copper electrode under disc-shaped, copper electrode among disc-shaped is equipped in the junction of two piezo tubes, in mass block
Copper electrode on disc-shaped is installed between the piezo tube of top, during the anode of top piezo tube and the anode of lower section piezo tube pass through
Between copper electrode be in contact, the upper and other end of picking up the ears that one end of first lead is welded on lower copper electrode is welded on copper electrode
On picking up the ears；
The centre of pedestal and mass block has an intermediate connecting hole, and a screw passes through the intermediate connecting hole on pedestal
And it intermediate connecting hole on mass block and is bolted on mass block to fix pedestal, mass block and piezo tube
Together；
Top surface via hole and side via hole are had on the top surface of shell and side wall, on the picking up the ears of the upper copper electrode
It is welded with upper lead wire, the upper lead wire is pierced by from the top surface via hole of shell, is welded on the picking up the ears of intermediate copper electrode
Middle part lead, the middle part lead are pierced by from side via hole, and the upper lead wire and middle part lead are exported as signal wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920188164.XU CN209542852U (en) | 2019-02-03 | 2019-02-03 | Piezoelectric ceramics shallow-layer exploration with complete waves energy converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920188164.XU CN209542852U (en) | 2019-02-03 | 2019-02-03 | Piezoelectric ceramics shallow-layer exploration with complete waves energy converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209542852U true CN209542852U (en) | 2019-10-25 |
Family
ID=68272999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920188164.XU Expired - Fee Related CN209542852U (en) | 2019-02-03 | 2019-02-03 | Piezoelectric ceramics shallow-layer exploration with complete waves energy converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209542852U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109870718A (en) * | 2019-02-03 | 2019-06-11 | 沈永进 | Piezoelectric ceramics shallow-layer exploration with complete waves energy converter |
-
2019
- 2019-02-03 CN CN201920188164.XU patent/CN209542852U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109870718A (en) * | 2019-02-03 | 2019-06-11 | 沈永进 | Piezoelectric ceramics shallow-layer exploration with complete waves energy converter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109141731A (en) | A kind of flexible base microsensor can be used for underwater turbulent boundary layer wall surface surging pressure test and its manufacturing method | |
| CN209542852U (en) | Piezoelectric ceramics shallow-layer exploration with complete waves energy converter | |
| CN103630274A (en) | Micro electro mechanical system based flexoelectric type micro pressure sensor | |
| US4906886A (en) | Ultrasound sensor | |
| CN109870718A (en) | Piezoelectric ceramics shallow-layer exploration with complete waves energy converter | |
| CN105806471A (en) | Ultrasonic cavitation noise signal measurement device and method | |
| US3178681A (en) | Hydrophone | |
| US5925822A (en) | Microelectromechanical cantilever acoustic sensor | |
| CN109746177B (en) | Piezoelectric ultrasonic transducer and working method thereof | |
| CN107246909A (en) | graphene acoustic sensor array | |
| CN106982399A (en) | Sound collector and the audio collecting device with it | |
| CN116754065A (en) | Acoustic vibration cavity sensing structure based on porous array type PZT | |
| CN110460941A (en) | Transmitting-receiving integrated graphene sonic transducer | |
| CN207780262U (en) | A kind of piezoelectric seismometer core and piezoelectric seismometer | |
| CN206490602U (en) | A kind of S types device for collecting piezoelectric vibration energy | |
| CN101699225B (en) | Vortex-street flow sensing measuring method and special sensor | |
| CN211576349U (en) | Piezoelectric vibration sensor and pickup | |
| CN212845148U (en) | A conductivity imaging device for forest physical examination | |
| JP6778346B1 (en) | Self-driving sensors and measuring devices that can be used for real-time measurement of side and end resistance of marine pipe piles | |
| CN211865725U (en) | Mechanical groove enhanced differential piezoelectric ultrasonic transducer | |
| CN207817222U (en) | A kind of piezoelectric seismometer | |
| CN208224505U (en) | Vibration excitor and test device in a kind of steady state shearing wave instrument connection | |
| Chan et al. | Piezoelectric copolymer hydrophones for ultrasonic field characterization | |
| CN207780260U (en) | A kind of piezoelectric seismometer | |
| CN207675958U (en) | A kind of both arms piezoelectric seismometer core and both arms piezoelectric seismometer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191025 Termination date: 20220203 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |