CN104215840B - Device and method for testing piezoelectric property of electrostatic spinning PVDF (polyvinylidene fluoride) piezoelectric fiber membrane - Google Patents
Device and method for testing piezoelectric property of electrostatic spinning PVDF (polyvinylidene fluoride) piezoelectric fiber membrane Download PDFInfo
- Publication number
- CN104215840B CN104215840B CN201410440089.3A CN201410440089A CN104215840B CN 104215840 B CN104215840 B CN 104215840B CN 201410440089 A CN201410440089 A CN 201410440089A CN 104215840 B CN104215840 B CN 104215840B
- Authority
- CN
- China
- Prior art keywords
- piezoelectric
- fiber membrane
- thin film
- motor
- force transducer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
The invention discloses a device for testing piezoelectric property of an electrostatic spinning PVDF (polyvinylidene fluoride) piezoelectric fiber membrane. A vertical seat is fixed in the rear of a base, a vertical panel capable of moving up and down is arranged on the front side of the vertical seat, one end of the vertical panel is connected with one end of a stepping motor, a motor fixing device is arranged on the vertical panel, one end of the motor fixing device is connected with the upper end of a motor, a spring is fixed to the lower end of the motor, the lower end of the spring is connected with a contactor, a first insulation layer is arranged between the contactor and the spring, a force transducer is arranged under the contactor, a second insulation layer and a conductive layer are arranged on the force transducer which is arranged in the middle of a clamp, and the clamp is arranged on the base through a horizontal panel. The device can measure piezoelectric signals generated by a flexible piezoelectric material under different-size and different-frequency pressure actions so as to characterize the piezoelectric property of the piezoelectric material, and measuring results can be computed to obtain piezoelectric strain constants; the electric signal measurement device is high in precision, good in repeatability and comparability and high in measurement efficiency.
Description
Technical field
The present invention relates to a kind of piezoelectric property test device of Static Spinning PVDF piezoelectric fabric thin film and method, to Static Spinning
PVDF nano-fiber film piezoelectric property carries out test evaluation, belongs to flexible piezoelectric Materials Measurement technical field.
Background technology
Piezoelectric is applied to the mainly piezopolymer in flexible textile, such as polyvinylidene fluoride (PVDF) and with
It is other organic piezoelectric materials of representative.This kind of material with its material pliable and tough, Hz-KHz width, dynamic characteristic are good, formability
The advantages of good, Low ESR and high piezoelectric constant, is for catching people's attention, and develops very rapid, in underwater sound ultrasonic measurement, pressure sensing,
The aspects such as ignition and blasting obtain extensively to be applied.
The flexible PVDF nano-fiber film prepared by electrostatic spinning technique, not only can control piezoelectricity and the ferrum of PVDF
Electrically, also the stretching and polarisation steps that form beta crystal can be reduced to a step and carry out simultaneously.The flexible PVDF nanofiber made
Thin film, light weight, be easy to carry, comfortable softness, good permeability, can be combined with textile, make portable flexible sensor,
Flexible energy storage device etc..
For in the performance characterization of flexible PVDF nano-fiber film it is of great importance that for piezoelectric membrane piezoelectricity should
Become the test of constant, piezoelectric strain constant represents charge density produced by unitstress.Piezoelectricity for piezoceramic material
Strain constant is tested, and existing method of testing mostly is static testing, is unsuitable for studying the dynamic response performance of piezoelectric.Example
As business has special piezoelectric d33Measuring instrument (Wuxi Yu Tian Science and Technology Ltd.) is it is adaptable to pressure measurement electric crystal and piezoelectricity are made pottery
Ceramic material, power amplitude less (2.5N), power frequency range low (0-110Hz).Chinese patent (patent publication No.：CN2308072)
《Quasi-static method longitudinal direction piezoelectric strain constant measuring instrument》By designing circuit, and using the method for testing comparing, survey can be improved
Accuracy of measurement, and piezoelectric strain constant d can be tested33Low polymer piezoelectric thin-film material and piezoelectric quartz crystal etc., but circuit knot
Structure design is complicated, and the contact that exerts a force is designed as the shapes such as hemispherical, is that point contacts with tested sample, if being used for testing nanometer
The piezoelectric strain constant of fiber membrane, can only touch several fibers, and be not readily accessible to whole fleece；Same power frequency model
Enclose low, be not suitable for studying the dynamic characteristic of piezoelectric, be therefore not particularly suited for the piezoelectric strain of electrostatic spinning nano fiber thin film
Constant is tested.Chinese patent (patent publication No.：CN1220399A)《The measuring method of the piezoelectric constant of thin film shaped piezoelectric material》,
Produce an air pressure using pressure mechanism and apply it on thin film, the electric charge that a charge detecting device measurement produces from thin film,
Size using the electric charge recording and the air pressure being applied calculates the piezoelectric constant of thin film shaped piezoelectric material.But this method of testing is not
Only power frequency range is low, and is not suitable for the piezoelectric constant test of fiber membrane, because fiber membrane has a large amount of holes, gas
Hole can be passed through, make the test of stress size inaccurate.In sum, lack now special test piezoelectric nano fiber membrane pressure
The test device of electrical property, and lack the test device of test piezoelectric dynamic response.
Content of the invention
The technical problem to be solved in the present invention is：Provide that a kind of test operation is simple, measurement efficiency is high, electric signal measurement
The piezoelectric property test device of Static Spinning PVDF piezoelectric fabric thin film of device high precision, repeatability and good comparability and method,
Solve current test device cannot accurately and effectively piezoelectric nano fiber membrane piezoelectric property be tested, and lack survey
The problem of the test device of pressure testing electric material dynamic response.
In order to solve above-mentioned technical problem, the technical scheme is that to provide a kind of Static Spinning PVDF piezoelectric fabric thin
It is characterised in that including base, the rear portion on base is fixed with stand to the piezoelectric property test device of film, and the front side of stand sets
There is vertical panel moving up and down, vertical panel one end is connected with one end of motor, vertical panel is provided with fixing electricity
Machine device, one end of fixing electric machine is connected with motor upper end, and motor lower end is fixed with spring, and lower spring end is with contact even
Connect, between contact and spring, be provided with the first insulating barrier, contact be arranged right below force transducer, it is exhausted that force transducer is provided with second
Edge layer and conductive layer, located at the centre of fixture, fixture passes through horizontal panel on base to force transducer.
Preferably, described vertical panel being additionally provided with prevents contact excessive to force transducer pressure and leads to force transducer
The overload protecting mechanism damaging.
Preferably, it is provided with x-axis moving track and y-axis moving track between described horizontal panel and base.
Preferably, described contact is the upper electrode of fiber membrane, and conductive layer is the lower electrode of fiber membrane.
A kind of method that piezoelectric property test device of use Static Spinning PVDF piezoelectric fabric thin film is tested, its feature
Be, contact and conductive layer be connected with the two ends of piezoelectric signal acquisition system respectively, vertical panel pass through the first power supply case with
PC connects, and motor is connected with PC by the second power supply case, and force transducer is connected with PC by the 3rd power supply case；During test
Fiber membrane is put on the electrically conductive, spring can be moved by programming Control motor belt motor and contact carries out different frequency, different stroke
Pump, to realize applying different frequency, different size of power to fiber membrane, the size of power by force transducer and
Force data processing system obtains；Piezoelectric signal acquisition system connects the upper/lower electrode of fiber membrane respectively, and test force effect is lower to produce
Raw voltage signal and current signal, carry out calculating piezoelectric strain constant for measurement result；
The stress producing in fiber membrane is calculated according to following formula：
Calculate the piezoelectric strain constant of fiber membrane according to following formula：
Wherein d33Represent that piezoelectric strain constant D of fiber membrane represents charge density, F represents the pressure of applying, Q represents single
Plane amasss the quantity of electric charge that fiber membrane produces, and σ represents the stress producing in fiber membrane.
Preferably, described force data processing system includes the data collecting card installed on PC, based on machine word
The data collection and analysis interface operation system that speech exploitation is write.
Preferably, described piezoelectric signal acquisition system is oscillograph or electrochemical workstation measuring system.
Preferably, described electrochemical workstation measuring system is made up of electrochemical workstation, microcomputer, three-electrode system.
The present invention can record the piezoelectricity letter that flexible piezoelectric material produces under the pressure effect of different size, different frequency
Number, thus characterizing the piezoelectric property of piezoelectric, and can measurement result be carried out being calculated piezoelectric strain constant.And,
Between the multi-axial forces sensing data of this device configuration and motion control data, energy real-time communication, realizes self-protection function；The signal of telecommunication is surveyed
Amount device high precision, repeatability and good comparability；Test operation is simple, and measurement efficiency is high.
Compared with prior art, the invention has the beneficial effects as follows：
(I) piezoelectric strain constant of fiber membrane state piezoelectric can be tested, measuring accuracy is high；
(II) force signal and piezoelectric signal can be recorded simultaneously, be conducive to the analysis to piezoelectric piezoelectric property；
(III) can real-time monitoring force signal and piezoelectric signal, facilitate look at and contrast real-time change；
(IV) spring structure can achieve the control to pre-applied force, and test condition is reproducible；
(V) antioverloading elastic structure is installed at end on a sensor, automatically avoids sensor to bear overload or Z axis motor performance
Error etc. leads to the generation of sensor degradation accident；
(VI) in addition, the assembling of each part of this device is flexible, no-float, simple to operate, measurement efficiency is high.
Brief description
The piezoelectric property test device of Static Spinning PVDF piezoelectric fabric thin film
Fig. 1 is a kind of structural representation of the piezoelectric property test device of Static Spinning PVDF piezoelectric fabric thin film；
Fig. 2 is the grip device schematic diagram of fixing force transducer and piezoelectric nano fiber membrane；
Fig. 3 is a kind of test campaign schematic diagram of the piezoelectric property test device of Static Spinning PVDF piezoelectric fabric thin film；
Fig. 4-1-1 is the oscillogram that force frequency is the pressure size of each time period when 5Hz；
Fig. 4-1-2 is the oscillogram that force frequency is the voltage swing of each time period when 5Hz；
Fig. 4-1-3 is the oscillogram that force frequency is the size of current of each time period when 5Hz；
Fig. 4-2-1 is the oscillogram that force frequency is the pressure size of each time period when 10Hz；
Fig. 4-2-2 is the oscillogram that force frequency is the voltage swing of each time period when 10Hz；
Fig. 4-2-3 is the oscillogram that force frequency is the size of current of each time period when 10Hz；
Fig. 4-3-1 is the oscillogram that force frequency is the pressure size of each time period when 15Hz；
Fig. 4-3-2 is the oscillogram that force frequency is the voltage swing of each time period when 15Hz；
Fig. 4-3-3 is the oscillogram that force frequency is the size of current of each time period when 15Hz.
Wherein：1 is base, and 2 is stand, and 3 is vertical panel, and 4 is overload protecting mechanism, and 5 is motor, and 6 is fixing motor
Device, 7 is spring, and 8 is contact, and 9 is the first insulating barrier, and 10 is horizontal panel, and 11 is fixture, and 12 is x-axis moving track and y-axis
Moving track, 13 is motor, and 14 is attached screw mandrel, and 15 is force transducer, and 16 is conductive layer, and 17 is the second insulating barrier, 18
For screw, 19 is PC, and 20 is piezoelectric signal acquisition system, and 21 is the first power supply case, and 22 is the second power supply case, and 23 is the 3rd confession
Electric box.
Specific embodiment
For making the present invention become apparent, hereby with preferred embodiment, and accompanying drawing is coordinated to be described in detail below.It should be understood that
These examples are only illustrative of the invention and is not intended to limit the scope of the invention.Read the present invention instruction content it
Afterwards, those skilled in the art can make various changes or modifications to the present invention, and these equivalent form of values equally fall within appended by the application
Claims limited range.
Embodiment 1
The present invention is a kind of piezoelectric property test device of Static Spinning PVDF piezoelectric fabric thin film, as shown in figure 1, its structure
Feature is：Rear portion on base 1 is fixed with stand 2, and the installed in front of stand 2 has the vertical panel 3 that can move up and down (Z axis),
Vertical panel 3 one end is connected with one end of motor 13 by attached screw mandrel 14, and motor 13 can make on vertical panel 3
Lower movement, antioverloading elastic structure (i.e. overload protecting mechanism 4) is fixed on this vertical panel 3, is used for preventing contact 8 from power is passed
Sensor 15 pressure is excessive and lead to force transducer 15 to damage, vertical panel 3 is further fixed on fixing electric machine 6, fixing motor
One end of device 6 connects motor 5 upper end, and spring 7 is fixed in motor 5 lower end, and spring 7 can achieve the control to thin film pre-applied force, bullet
Spring 7 lower end connects contact 8, has the first insulating barrier 9 between contact 8 and spring 7, and contact 8 is the upper electrode of fiber membrane；Motor
5 pass through drive mechanism, vertical panel 3 can be driven to carry motor 5 and move up and down.As shown in Fig. 2 with fixture 11 by force transducer 15
It is fixed on horizontal panel 10, equipped with the second insulating barrier 17 and conductive layer 16 on force transducer 15, conductive layer 16 is thin film lower floor
Electrode.Respectively in contact 8 and conductive layer 16 screw 18 installed above, use as connecting electrical signal collection system.
X-axis moving track and y-axis moving track 12 are installed between horizontal panel 10 and base 1.In x-axis moving track and
The both sides of y-axis moving track 12 can be installed can be made motor that it all around slides or directly to drive x-axis manually
Moving track and y-axis moving track 12 all around slide.
As shown in figure 3, contact 8 and conductive layer 16 are connected with the two ends of piezoelectric signal acquisition system 20 respectively, vertical
Plate 3 is connected with PC 19 by the first power supply case 21, and motor 5 is connected with PC 19 by the second power supply case 22, force transducer 15
It is connected with PC 19 by the 3rd power supply case 23；During test, fiber membrane is put on conductive layer 16, can be by programming Control electricity
Machine 5 drives spring 7 and contact 8 to carry out different frequency, the pumping, to realize fiber membrane is applied not of different stroke
Same frequency, different size of power, the size of power is obtained by force transducer 15 and force data processing system.Piezoelectric signal acquisition system
20 upper/lower electrodes connecting fiber membrane respectively, the lower voltage signal producing of test force effect and current signal.For measurement knot
Fruit carries out calculating piezoelectric strain constant.
The stress producing in fiber membrane is calculated according to following formula：
Wherein σ represents the stress producing in fiber membrane, and F represents the pressure of applying, and S represents the area of thin film.
Calculate the piezoelectric strain constant of fiber membrane according to following formula：
Wherein d33Represent that piezoelectric strain constant D of fiber membrane represents charge density, F represents the pressure of applying, Q represents single
Plane amasss the quantity of electric charge that fiber membrane produces, and σ represents the stress producing in fiber membrane.
Taking frequency f=5Hz (shown in Fig. 4-1-1, Fig. 4-1-2, Fig. 4-1-3) as a example, calculating process is as follows：
Wherein F1 represents peak voltage, and F2 represents peak voltage, and a represents the square film length of side
A=2cm=0.02m F1=28.29N F2=0.77N
σ=34400N/m2
T represents the cycle
T=0.2s Q=4.74 × 10-10C
d33=1.38 × 10-14
Drive mechanism is multi-axis motion control card (being arranged on host computer) respectively or coordinates the motor 13 controlling
And attached screw mandrel 14, and the vertical panel 3 that controlled by the link of attached screw mandrel 14 of motor 13 and x-axis moving track and y
The horizontal panel 10 that the motor of axle moving track 12 both sides controls.
Force transducer 15 is the force transducer that measuring accuracy is high, range is little, enables the real-time measurement of fiber membrane stress,
Meet the precision of fiber membrane stress and range and dynamic frequency requires.
Antioverloading elastic structure is linear elasticity rigidity cantilever beam, and it is maximum that elastic bending rigidity size depends on sensor Z-direction
Overloading load or the magnitude of load wishing overload protection.
Flexible piezoelectric nano-fiber film, is prepared by electrostatic spinning technique.
Force data processing system is (as National Instrument is public including the data collecting card installed on PC
The PCI-6220 of department), the data collection and analysis interface operation system being write based on the exploitation of the computer languages such as VC++ application program
System.This test system can work in coordination with the multiple systems of manipulation, covers motion platform operation, force transducer 15 and the communication-cooperation between the two
Manipulation, the data of collection fiber membrane stress simultaneously carries out real-time processing, analysis to the related data surveyed, and interface operation is good.
Piezoelectric signal acquisition system 20 can be the collection of simulant signal such as oscillograph or electrochemical workstation measuring system
Device.Electrochemical workstation measuring system is made up of electrochemical workstation, microcomputer, three-electrode system, and certainty of measurement is high, meets fine
Voltage, the precision of current signal and range that dimension thin film stress produces and dynamic frequency require.
Motor 5 used by the present invention can be programmed and to be controlled contact 8 with certain by setting speed, acceleration, shift length
Frequency move repeatedly up and down, force effect is carried out to piezoelectric fabric thin film.
Force transducer 15 used by the present invention is precision force transducer, such as the Nano17 of ATI company of the U.S., by output electricity
Pressure signal, battery case is powered and signal processing and amplifying, is converted into digital signal by A/D card and inputs the collection that PC 19 carries out signal
Process, the contact force in z-axis direction can be measured, certainty of measurement is 1.5%, range is 50N, resolution is 1/160N, resonant frequency
For 3000Hz, meet the precision of fiber membrane stress and range and dynamic frequency requires.
This test device can measure under different frequency, size, the external applied load of acceleration accurately, in real time, fiber membrane shape
The piezoelectric signal that state piezoelectric produces, can be used to analyze the piezoelectric strain constant of piezoelectric fabric thin-film material.In view of test
The generality of principle, this test device may extend to performance test and the evaluation of other piezoelectrics.
Embodiment 2
The stress producing in fiber membrane is calculated according to following formula：
Wherein σ represents the stress producing in fiber membrane, and F represents the pressure of applying, and S represents the area of thin film.
Calculate the piezoelectric strain constant of fiber membrane according to following formula：
Wherein d33Represent that piezoelectric strain constant D of fiber membrane represents charge density, F represents the pressure of applying, Q represents single
Plane amasss the quantity of electric charge that fiber membrane produces, and σ represents the stress producing in fiber membrane.
Taking frequency f=10Hz (shown in Fig. 4-2-1, Fig. 4-2-2, Fig. 4-2-3) as a example, calculating process is as follows：
Wherein F1 represents peak voltage, and F2 represents peak voltage, and a represents the square film length of side
A=2cm=0.02m F1=19.07N F2=1.38N
σ=22112.5N/m2
T represents the cycle
T=0.1s Q=4.47 × 10-9C
d33=2.02 × 10-13
Other are same as Example 1.
Embodiment 3
The stress producing in fiber membrane is calculated according to following formula：
Wherein σ represents the stress producing in fiber membrane, and F represents the pressure of applying, and S represents the area of thin film.
Calculate the piezoelectric strain constant of fiber membrane according to following formula：
Wherein d33Represent that piezoelectric strain constant D of fiber membrane represents charge density, F represents the pressure of applying, Q represents single
Plane amasss the quantity of electric charge that fiber membrane produces, and σ represents the stress producing in fiber membrane.
Taking frequency f=15Hz (shown in Fig. 4-3-1, Fig. 4-3-2, Fig. 4-3-3) as a example, calculating process is as follows：
Wherein F1 represents peak voltage, and F2 represents peak voltage, and a represents the square film length of side
A=2cm=0.02m F1=18.39N F2=1.63N
σ=20950N/m2
T represents the cycle
T=0.067s Q=4.59 × 10-9C
d33=2.19 × 10-13
Other are same as Example 1.
Claims (8)
1. a kind of piezoelectric property test device of Static Spinning PVDF piezoelectric fabric thin film is it is characterised in that include base (1), bottom
Rear portion on seat (1) is fixed with stand (2), and the front side of stand (2) is provided with vertical panel moving up and down (3), vertical panel
(3) one end is connected with one end of motor (13), and vertical panel (3) is provided with fixing electric machine (6), fixing electric machine
(6) one end is connected with motor (5) upper end, and motor (5) lower end is fixed with spring (7), and spring (7) lower end is connected with contact (8),
Spring (7) can achieve the control to thin film pre-applied force, is provided with the first insulating barrier (9), contact (8) between contact (8) and spring (7)
Be arranged right below force transducer (15), force transducer (15) is provided with the second insulating barrier (17) and conductive layer (16), and power senses
Located at the centre of fixture (11), fixture (11) passes through horizontal panel (10) on base (1) to device (15).
2. a kind of piezoelectric property test device of Static Spinning PVDF piezoelectric fabric thin film as claimed in claim 1, its feature exists
In being additionally provided with described vertical panel (3) prevents contact (8) pressure is excessive and leads to force transducer to force transducer (15)
(15) overload protecting mechanism (4) damaging.
3. a kind of piezoelectric property test device of Static Spinning PVDF piezoelectric fabric thin film as claimed in claim 1, its feature exists
In being provided with x-axis moving track and y-axis moving track (12) between described horizontal panel (10) and base (1).
4. a kind of piezoelectric property test device of Static Spinning PVDF piezoelectric fabric thin film as claimed in claim 1, its feature exists
In described contact (8) is the upper electrode of fiber membrane, and conductive layer (16) is the lower electrode of fiber membrane.
5. a kind of piezoelectric property test device using Static Spinning PVDF piezoelectric fabric thin film as claimed in claim 1 is surveyed
The method of examination it is characterised in that connect contact (8) and conductive layer (16) respectively with the two ends of piezoelectric signal acquisition system (20)
Connect, vertical panel (3) is connected with PC (19) by the first power supply case (21), motor (5) passes through the second power supply case (22) and PC
Machine (19) connects, and force transducer (15) is connected with PC (19) by the 3rd power supply case (23)；During test, fiber membrane is placed on
On conductive layer (16), spring (7) can be driven by programming Control motor (5) and contact (8) carries out different frequency, different stroke
Pump, to realize applying different frequency, different size of power to fiber membrane, the size of power is by force transducer (15)
And force data processing system obtains；Piezoelectric signal acquisition system (20) connects the upper/lower electrode of fiber membrane respectively, tests masterpiece
With voltage signal and the current signal of lower generation, measurement result is carried out calculating piezoelectric strain constant；
The stress producing in fiber membrane is calculated according to following formula：
Calculate the piezoelectric strain constant of fiber membrane according to following formula：
Wherein σ represents the stress producing in fiber membrane, and F represents the pressure of applying, and S represents the area of thin film, d33Represent fiber
Piezoelectric strain constant D of thin film represents charge density, and Q represents the quantity of electric charge that unit area fiber membrane produces.
6. a kind of piezoelectric property method of testing of Static Spinning PVDF piezoelectric fabric thin film as claimed in claim 5, its feature exists
In described force data processing system includes the data collecting card installed upper in PC (19), is developed based on computer language and compiles
The data collection and analysis interface operation system write.
7. a kind of piezoelectric property method of testing of Static Spinning PVDF piezoelectric fabric thin film as claimed in claim 5, its feature exists
In described piezoelectric signal acquisition system (20) is oscillograph or electrochemical workstation measuring system.
8. a kind of piezoelectric property method of testing of Static Spinning PVDF piezoelectric fabric thin film as claimed in claim 7, its feature exists
In described electrochemical workstation measuring system is made up of electrochemical workstation, microcomputer, three-electrode system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410440089.3A CN104215840B (en) | 2014-09-01 | 2014-09-01 | Device and method for testing piezoelectric property of electrostatic spinning PVDF (polyvinylidene fluoride) piezoelectric fiber membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410440089.3A CN104215840B (en) | 2014-09-01 | 2014-09-01 | Device and method for testing piezoelectric property of electrostatic spinning PVDF (polyvinylidene fluoride) piezoelectric fiber membrane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104215840A CN104215840A (en) | 2014-12-17 |
| CN104215840B true CN104215840B (en) | 2017-02-15 |
Family
ID=52097545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410440089.3A Active CN104215840B (en) | 2014-09-01 | 2014-09-01 | Device and method for testing piezoelectric property of electrostatic spinning PVDF (polyvinylidene fluoride) piezoelectric fiber membrane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104215840B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535863A (en) * | 2014-12-23 | 2015-04-22 | 上海电机学院 | Piezoelectric property parameter dynamic sweep frequency test device and method |
| CN104502737A (en) * | 2014-12-29 | 2015-04-08 | 中国计量科学研究院 | Direct dynamic force measurement based piezoelectric strain constant measurement device and method |
| CN106324374B (en) * | 2015-06-24 | 2018-12-21 | 中国石油化工股份有限公司 | For detecting the method and system of the piezoelectric modulus of shale samples to be measured |
| KR101793902B1 (en) * | 2016-07-27 | 2017-11-07 | 코스맥스 주식회사 | Device for measuring piezoelectric properties of liquid or viscous materials |
| CN106404655A (en) * | 2016-09-05 | 2017-02-15 | 上海电力学院 | Device for applying periodic pressure to horizontal direction |
| CN106907282B (en) * | 2017-01-25 | 2019-02-15 | 中国第一汽车股份有限公司 | The test device of piezo actuator Performance And Reliability |
| CN108982982A (en) * | 2018-05-02 | 2018-12-11 | 成都安瑞芯科技有限公司 | The method of probe and test piezoelectric modulus |
| CN109282919B (en) * | 2018-07-05 | 2019-09-03 | 西安电子科技大学 | A kind of modified piezoelectric ceramic piece method for measuring stress and measuring device |
| CN110045190B (en) * | 2019-03-15 | 2021-08-06 | 南京航空航天大学 | Surface contact electrification real-time measuring platform |
| CN110200634B (en) * | 2019-07-05 | 2023-09-05 | 北京中硕众联智能电子科技有限公司 | Plantar pressure sensor for correcting frequency influence and corresponding correction method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09159709A (en) * | 1995-12-06 | 1997-06-20 | Toyo Commun Equip Co Ltd | Frequency measuring equipment of piezoelectric element plate |
| JPH11142456A (en) * | 1997-11-05 | 1999-05-28 | Advantest Corp | Piezoelectric resonator measuring device |
| CN1220399A (en) * | 1997-12-18 | 1999-06-23 | 大宇电子株式会社 | Method for measuring piezoelectric constant of thin film shaped piezoelectric material |
| CN1510768A (en) * | 2002-12-23 | 2004-07-07 | �Ҵ���˾ | Piezoelectric device and method thereof |
| CN1979184A (en) * | 2005-11-30 | 2007-06-13 | 中国科学院声学研究所 | Transverse piezoelectric strain constant measuring method by piezoelectric material quasistatic method and system thereof |
| JP2008233053A (en) * | 2007-03-23 | 2008-10-02 | Daishinku Corp | Method of measuring frequency characteristic of piezo-electric vibrating element |
| CN102967290A (en) * | 2012-11-15 | 2013-03-13 | 东华大学 | Analog measuring method in texture touching evaluation process |
| CN203101528U (en) * | 2013-03-11 | 2013-07-31 | 厦门乃尔电子有限公司 | Piezoelectric constant D15 testing fixture |
-
2014
- 2014-09-01 CN CN201410440089.3A patent/CN104215840B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09159709A (en) * | 1995-12-06 | 1997-06-20 | Toyo Commun Equip Co Ltd | Frequency measuring equipment of piezoelectric element plate |
| JPH11142456A (en) * | 1997-11-05 | 1999-05-28 | Advantest Corp | Piezoelectric resonator measuring device |
| CN1220399A (en) * | 1997-12-18 | 1999-06-23 | 大宇电子株式会社 | Method for measuring piezoelectric constant of thin film shaped piezoelectric material |
| CN1510768A (en) * | 2002-12-23 | 2004-07-07 | �Ҵ���˾ | Piezoelectric device and method thereof |
| CN1979184A (en) * | 2005-11-30 | 2007-06-13 | 中国科学院声学研究所 | Transverse piezoelectric strain constant measuring method by piezoelectric material quasistatic method and system thereof |
| JP2008233053A (en) * | 2007-03-23 | 2008-10-02 | Daishinku Corp | Method of measuring frequency characteristic of piezo-electric vibrating element |
| CN102967290A (en) * | 2012-11-15 | 2013-03-13 | 东华大学 | Analog measuring method in texture touching evaluation process |
| CN203101528U (en) * | 2013-03-11 | 2013-07-31 | 厦门乃尔电子有限公司 | Piezoelectric constant D15 testing fixture |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104215840A (en) | 2014-12-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104215840B (en) | Device and method for testing piezoelectric property of electrostatic spinning PVDF (polyvinylidene fluoride) piezoelectric fiber membrane | |
| CN106568986B (en) | From driving wind sensor | |
| CN207819856U (en) | The scanning of IV characteristic curves and the parameter identification system of a kind of photovoltaic array | |
| CN1828308A (en) | On-line testing and analyzing device and method for microelectromechanical system component material parameter | |
| CN113279742A (en) | Self-powered sensor for vibration measurement and safety monitoring of downhole drilling tool | |
| CN102565537B (en) | A kind of slip testing system of electric contact simulation | |
| CN110082029A (en) | A kind of PVDF piezoelectric film sensor dynamic characteristics scaling method | |
| CN105136418B (en) | Micro- disturbance torque simulation system vibration characteristics device for testing and analyzing | |
| CN103499329B (en) | Device and method for testing radial deformation of rubber compression test-piece | |
| Xin et al. | A biomimetic tactile sensing system based on polyvinylidene fluoride film | |
| CN110595905A (en) | Portable rock core multi-parameter comprehensive testing device and testing method | |
| CN110441707A (en) | A kind of health state of lithium ion battery acoustic emission detection system and method | |
| CN105865923B (en) | A kind of soft substance mechanical property measurement method and its measuring system | |
| CN212391108U (en) | Friction nanometer power generation sensing device for monitoring vibration of marine structure | |
| CN104578669B (en) | Output device of the electrical signal, positioning device and localization method based on elastomeric element | |
| CN206057160U (en) | A kind of nondestructive detection system of small size component top layer microfissure | |
| CN100464151C (en) | Method for inspecting article surface vein and its sensor | |
| Patel et al. | Physics based modelling and analysis of IPMC vibration energy harvester | |
| Yingyong et al. | A comparative study of the electrical characteristics of piezoelectric and triboelectric nanogenerators for energy-harvesting floor tiles | |
| CN207227503U (en) | A kind of effect of vibration stress relief online rating system based on multiple acceleration transducers information fusion | |
| CN101051039B (en) | Method for detecting small ball probe type single polar charged particle density | |
| CN205352546U (en) | Flexible construction resonance frequency visual detection system | |
| CN203275532U (en) | Piezoelectric property detection device for combination of ultrasonic motor stator and piezoelectric ceramic | |
| CN211013839U (en) | Portable rock core multi-parameter comprehensive testing device | |
| CN116155143A (en) | Method and device for acquiring motor parameters |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200403 Address after: 236500 Dongcheng Industrial Park, Jieshou City, Fuyang, Anhui Patentee after: ANHUI HENGYI TEXTILE TECHNOLOGY Co.,Ltd. Address before: 201620 Shanghai, North Renmin Road, Songjiang District, No. 2999 Patentee before: DONGHUA University |
|
| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 236500 north of Shengli East Road, Dongcheng Industrial Park, Jieshou City, Fuyang City, Anhui Province Patentee after: Anhui Hengyi Intelligent Technology Co.,Ltd. Address before: 236500 north of Shengli East Road, Dongcheng Industrial Park, Jieshou City, Fuyang City, Anhui Province Patentee before: ANHUI HENGYI TEXTILE TECHNOLOGY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |