CN105891544B - The linear acceleration sensor of imitative otolith device structure - Google Patents
The linear acceleration sensor of imitative otolith device structure Download PDFInfo
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- CN105891544B CN105891544B CN201610271820.3A CN201610271820A CN105891544B CN 105891544 B CN105891544 B CN 105891544B CN 201610271820 A CN201610271820 A CN 201610271820A CN 105891544 B CN105891544 B CN 105891544B
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- China
- Prior art keywords
- metal core
- linear acceleration
- imitative
- device structure
- acceleration sensor
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- 230000001133 acceleration Effects 0.000 title claims abstract description 36
- 230000002842 otolith Effects 0.000 title claims abstract description 26
- 241000356847 Otolithes Species 0.000 title claims abstract description 24
- 210000001265 otolithic membrane Anatomy 0.000 title claims abstract description 24
- 229910052751 metal Inorganic materials 0.000 claims abstract description 51
- 239000002184 metal Substances 0.000 claims abstract description 48
- 239000004744 fabric Substances 0.000 claims abstract description 40
- 229920001971 elastomer Polymers 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 25
- 239000000806 elastomer Substances 0.000 claims abstract description 24
- 239000003351 stiffener Substances 0.000 claims abstract description 18
- 239000002033 PVDF binder Substances 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 8
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 8
- 239000005060 rubber Substances 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 4
- 239000010931 gold Substances 0.000 claims description 4
- 229910052737 gold Inorganic materials 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 230000005489 elastic deformation Effects 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 6
- 238000004070 electrodeposition Methods 0.000 abstract description 5
- 238000004458 analytical method Methods 0.000 abstract description 3
- 238000013523 data management Methods 0.000 abstract description 3
- 229920002379 silicone rubber Polymers 0.000 description 8
- 230000001720 vestibular Effects 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 210000002480 semicircular canal Anatomy 0.000 description 3
- 239000000741 silica gel Substances 0.000 description 3
- 229910002027 silica gel Inorganic materials 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 208000002173 dizziness Diseases 0.000 description 2
- 230000004064 dysfunction Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 210000000056 organ Anatomy 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 210000000467 autonomic pathway Anatomy 0.000 description 1
- 230000001447 compensatory effect Effects 0.000 description 1
- 230000001054 cortical effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004424 eye movement Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 210000000653 nervous system Anatomy 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 229920005594 polymer fiber Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
- G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
- G01P15/09—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by piezoelectric pick-up
- G01P15/0907—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by piezoelectric pick-up of the compression mode type
Abstract
The present invention discloses a kind of linear acceleration sensor of imitative otolith device structure,It is constituted,Stiff case,Flexible elastomer,It is fixed on the more metal core piezoelectric fabrics being connected in parallel of stiff case bottom,It is bonded in the stiffener on flexible elastomer top,Connect the elastic element of stiffener and external rigidity shell,Two conducting wires of the symmetry electrode of metal core piezoelectric fabric are drawn,Two conducting wires are connected on the positive and negative anodes of charge amplifier input terminal,Whole device is fixed on vibrator,When vibrator up-down vibration,Elastic element is flexible to drive stiffener therewith,At this moment flexible resilient, which is known from experience, occurs elastic deformation,Metal core piezoelectric fabric also will produce elastic deformation,The metal core piezoelectric fabric being wrapped in flexible elastomer can obtain an impact signal,Due to piezoelectric effect,Surface electrode on piezoelectric material has charge generation,Due to the difference of electrode position,The charge or voltage generated on electrode is different.We are by the charge signal on acquisition electrode in this way, through Data Management Analysis, you can obtain its acceleration information.
Description
Technical field
The present invention discloses a kind of linear acceleration sensor of imitative otolith device structure, be it is a kind of can measure linear acceleration,
Structure is compared with simple, the higher novel sensor of precision.
Background technology
Otolithic organ as one of vestibular nervous system component part has receptor, conduction god as semicircular canal
Through access and control axis, it has vestibulo-ocular reflection, vestibulospinal, vestibulocerebellum, vestibular autonomic nerve system as semicircular canal
System, vestibular cortical pathway and corresponding reaction.Unlike semicircular canal guard system, adequate stimulus is not angular acceleration,
But gravity and linear acceleration.Otolith system function can be divided into three classes：（1）Feeling space orientation and linear motion；（2）Production
The raw eye movement to head linear acceleration compensatory；（3）Participate in the coordination of movement and balance.It body posture balance,
It plays an important role in spatial orientation, its dysfunction is the one of the major reasons of clinical dizziness.Otolith function evaluation is not only right
Special occupation person (such as aerospace personnel, diver, gymnast) is significant, and to dizziness, vestibular dysfunction
Evaluation has important value.
The linear acceleration sensor that existing market is sold, is all based on greatly principle of inertia.Due to the limitation of the principle,
Determine that its test environment requirement is high and of high cost, it is difficult to meet the requirement of detection linear acceleration.
Invention content
The present invention is to be inspired and design by human body otolith device structure, and technical problems to be solved are to provide a kind of containing gold
Belong to the linear acceleration sensor that core piezoelectric fabric imitates otolith device structure, to overcome the drawbacks described above of the prior art, this contains metal
The linear acceleration sensor that core piezoelectric fabric imitates otolith device structure can be converted into acceleration change what we can identify
Voltage signal may determine that the size and Orientation of linear acceleration by the size of voltage signal, be examined by the variation of voltage value
Measure the variation of acceleration.
Above-mentioned purpose is achieved through the following technical solutions：A kind of linear acceleration sensor of imitative otolith device structure, it is special
Sign is, including stiff case, more be connected in parallel and be fixed on the metal core piezoelectric fabric of stiff case bottom, the rigidity
Flexible elastomer is equipped in shell, the flexible elastomer is wrapped in metal core piezoelectric fabric surface, the bottom of flexible elastomer
Portion is bonded in the bottom of stiff case, and top is bonded stiffener, by elastic element between stiffener and stiff case
It is connected, the surface electrode of metal core piezoelectric fabric is drawn by conducting wire.
The stiff case is rectangular channel or oval-shaped slot or circular trough or square groove or oval slot, material be metal or
Composite material.
The metal core piezoelectric fabric structure is an intermediate metal core, piezoelectric material is surrounded by, in piezoresistive material
It is PVDF or PVDF composite materials that material part longitudinal component Coating, which has surface electrode, the piezoelectric material, and surface electrode is
The surface electrode of thin metal layer or conducting resinl, metal core piezoelectric fabric is drawn by conducting wire, and conducting wire is the copper wire of a diameter of 0.1mm
Or aluminium wire.
The elastic element is spring or rubber band.
The flexible elastomer is soft rubber or silica gel or silicon rubber.
Structure of the invention is rationally simple, it is easy, easy to use to manufacture, and through the invention, imitates the straight of otolith device structure
Linear acceleration transducer is constituted：Stiff case, flexible elastomer are fixed on more of stiff case bottom and are connected in parallel
Metal core piezoelectric fabric, the stiffener, the connection stiffener and external rigidity shell that are bonded in flexible elastomer top
Elastic element.In use, two conducting wires for drawing metal core piezoelectric fabric surface electrode are connected to charge amplifier
On the positive and negative anodes of input terminal, whole device is fixed on vibrator, when vibrator up-down vibration, elastic element is flexible therewith
Stiffener vibration is driven, at this moment flexible resilient, which is known from experience, occurs elastic deformation, and metal core piezoelectric fabric also will produce elastic shape
Become, the metal core piezoelectric fabric being wrapped in flexible elastomer can obtain an impact signal, due to piezoelectric effect, piezoresistive material
Surface electrode on material has charge generation, and due to the difference of electrode position, the charge or voltage that are generated on electrode are different.This
Sample we by the charge signal on acquisition electrode, through Data Management Analysis, you can its acceleration information.
In the present invention, stiff case is rectangular channel or oval-shaped slot or circular trough or square groove or oval slot, material are
Metal or composite material, elastic element are spring or rubber band, and flexible elastomer is soft rubber or silica gel or silicon rubber.And containing gold
It is an intermediate metal core to belong to core piezoelectric fabric structure, piezoelectric material is surrounded by, in piezoelectric material part longitudinal component table
Face applies and is coated with surface electrode, and the piezoelectric material is PVDF or PVDF composite materials, and surface electrode is thin metal layer or conducting resinl,
The surface electrode of metal core piezoelectric fabric is drawn by conducting wire, and conducting wire is the copper wire or aluminium wire of a diameter of 0.1mm.
Therefore, technical scheme of the present invention can be specifically expressed as：
The linear acceleration sensor of imitative otolith device structure, by more be wrapped in silicon rubber metal core piezoelectricity in parallel
Fiber, stiffener, spring, stiff case and draw metal core piezoelectric fabric surface electrode conducting wire composition.In use,
Two conducting wires for drawing metal core piezoelectric fabric surface electrode are connected on the positive and negative anodes of charge amplifier input terminal,
It is integrally attached on vibrator, when vibrator up-down vibration, telescopic spring drives stiffener therewith, at this moment silicon rubber meeting
Elastic deformation occurs, metal core piezoelectric fabric also will produce elastic deformation, and the metal core piezoelectricity being wrapped in silicon rubber is fine
Dimension will obtain an impact signal, and due to piezoelectric effect, the surface electrode on piezoelectric material has charge generation, due to electrode position
The difference set, the charge or voltage generated on electrode are different.We are by the charge signal on acquisition electrode in this way, through number
It is analyzed according to processing, you can obtain its acceleration information.
The market of global sensor application is 100,000,000,000 dollars every year, and the linear acceleration that the present invention imitates otolith device structure passes
The use of sensor will bring larger economic benefit and social benefit.
Through the above technical solutions, the multi-electrode metal core piezoceramic-polymer fiber combined sensor of the present invention can be with
Linear acceleration and relatively simple for structure, the higher sensor of measurement accuracy can be measured by seeing one kind as.
The linear acceleration sensor of imitative otolith device structure designed by this patent, very because of its metal core piezoelectric fabric
It is sensitive, it is of less demanding to test environment, and also cost is relatively low.
The linear acceleration sensor for the imitative otolith device structure that this patent provides is designed according to piezoelectric effect principle,
Some drawbacks of some traditional line acceleration transducers before it can improve are designed to the invention of linear acceleration sensor
Provide a new idea and method.The present invention is also that the invention of otolithic organ is copied to design simultaneously, relatively medical treatment is suitble to set
Standby and clinic study etc..
Description of the drawings
Fig. 1 is the structural schematic diagram of the linear acceleration sensor of the imitative otolith device structure of the present invention.
Fig. 2 is the structural schematic diagram of metal core piezoelectric fabric in the present invention.
In figure：1 stiffener, 2 elastic elements, 3 flexible elastomers, 4 stiff cases, 5 metal core piezoelectric fabrics, 6 tables
Face electrode, 7 piezoelectric materials, 8 metal cores, 9 conducting wires.
Specific implementation mode
Below in conjunction with the accompanying drawings and description of the drawings the present invention is described further.
The more metal core piezoelectric fabrics 5 being connected in parallel are fixed on the bottom of a stiff case 4, flexible elastomer
3 are wrapped in piezoelectric fabric surface, and flexible elastomer 3 is silicon rubber；It is bonded in stiff case 4 in the bottom of flexible elastomer 3
Bottom, top are bonded a stiffener 1, are connected by elastic element 2 between stiffener 1 and stiff case 4, elastic element
2 be spring, and the surface electrode 6 of metal core piezoelectric fabric is drawn by conducting wire 9, generally imitative otolith device structure.In use, drawing
Two conducting wires for going out metal core piezoelectric fabric surface electrode are connected on the positive and negative anodes of charge amplifier input terminal, will
It is integrally attached on vibrator, and when vibrator works, vibrator up-down vibration, elastic element 2 is flexible to drive rigidity therewith
Element, at this moment flexible elastomer 3 elastic deformation can occur, metal core piezoelectric fabric 5 also will produce elastic deformation, be wrapped in soft
Metal core piezoelectric fabric 5 in property elastomer 3 will obtain an impact signal, due to piezoelectric effect, 7 surface of piezoelectric material
Electrode has charge generation, and due to the difference of electrode position, the charge or voltage that are generated on electrode are different.We pass through in this way
Polarity and the numerical value of fiber it may determine that linear acceleration direction and size.
Selectively, it is by more parallel connections which, which imitates otolith device linear acceleration sensor,
Metal core piezoelectric fabric 5 together is fixed on the bottom of a stiff case 4, and flexible elastomer 3 is wrapped in metal core
5 surface of piezoelectric fabric, the bottom of flexible elastomer 3 are bonded in the bottom of stiff case 4, and top is bonded a stiffener 1,
It is connected by elastic element 2 between stiffener 1 and stiff case 4 and is constituted.
Selectively, the stiff case 4 is rectangular channel, oval-shaped slot, circular trough, square groove, oval slot, and material is gold
Category or composite material.
Selectively, 5 structure of metal core piezoelectric fabric is an intermediate metal core 8, is surrounded by piezoelectric material
7, it is PVDF or PVDF composite materials, table to have surface electrode 6, piezoelectric material 7 in 7 part longitudinal component Coating of piezoelectric material
Face electrode 6 is thin metal layer or conducting resinl, and the surface electrode 6 of metal core piezoelectric fabric is drawn by conducting wire 9, and conducting wire 9 is diameter
For the copper wire or aluminium wire of 0.1mm.
Selectively, the elastic element 2 is spring or rubber band.
Selectively, the flexible elastomer 3 is soft rubber or silica gel or silicon rubber.
As shown in Figure 1, imitative otolith device structure is fixed on vibrator, and by two in metal core piezoelectric fabric 5
Conducting wire is connected respectively to the positive and negative end of charge amplifier input terminal, and the output end of charge amplifier and data collecting card are connected
Connect, then data collecting card be connected on computer, when vibrator works, vibrator up-down vibration, elastic element 2 it is flexible with
Drive stiffener 1, at this moment silicon rubber 3 elastic deformation can occur, metal core piezoelectric fabric 5 also will produce elastic deformation,
The metal core piezoelectric fabric 5 being wrapped in flexible elastomer 3 can obtain an impact signal, due to piezoelectric effect, piezoresistive material
Surface electrode 6 on material 7 has charge generation, and due to the difference of electrode position, the charge or voltage that are generated on electrode are different.
We are by the charge signal on acquisition electrode in this way, through Data Management Analysis, you can obtain its acceleration information.
Claims (5)
1. a kind of linear acceleration sensor of imitative otolith device structure, characterized in that including stiff case（4）, more be connected in parallel on
It is fixed on stiff case together（4）The metal core piezoelectric fabric of bottom（5）, the stiff case（4）It is interior to be equipped with flexible resilient
Body（3）, the flexible elastomer（3）It is wrapped in metal core piezoelectric fabric（5）Surface, flexible elastomer（3）Bottom bonding
In stiff case（4）Bottom, top is bonded stiffener（1）, stiffener（1）And stiff case（4）Between by bullet
Property element（2）It is connected.
2. a kind of linear acceleration sensor of imitative otolith device structure according to claim 1, characterized in that the rigidity
Shell（4）For rectangular channel or oval-shaped slot or circular trough or oval slot, material is metal or composite material.
3. a kind of linear acceleration sensor of imitative otolith device structure according to claim 1, characterized in that described containing gold
Belong to core piezoelectric fabric（5）Structure is an intermediate metal core（8）, it is surrounded by piezoelectric material（7）, in piezoelectric material（7）Portion
Longitudinal component Coating is divided to have surface electrode（6）, the piezoelectric material（7）For PVDF or PVDF composite materials, surface electrode
（6）For thin metal layer or conducting resinl, the surface electrode of metal core piezoelectric fabric（6）By conducting wire（9）It draws, conducting wire（9）It is straight
Diameter is the copper wire or aluminium wire of 0.1mm.
4. a kind of linear acceleration sensor of imitative otolith device structure according to claim 1, characterized in that the elasticity
Element（2）For spring or rubber band.
5. a kind of linear acceleration sensor of imitative otolith device structure according to claim 1, characterized in that the flexibility
Elastomer（3）For soft rubber.
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| CN201610271820.3A CN105891544B (en) | 2016-04-27 | 2016-04-27 | The linear acceleration sensor of imitative otolith device structure |
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| CN201610271820.3A CN105891544B (en) | 2016-04-27 | 2016-04-27 | The linear acceleration sensor of imitative otolith device structure |
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| CN105891544B true CN105891544B (en) | 2018-11-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2725261C1 (en) * | 2019-07-16 | 2020-06-30 | Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" (Госкорпорация "Росатом") | Linear acceleration sensor |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI628439B (en) * | 2016-12-28 | 2018-07-01 | 國立成功大學 | Accelerometer and manufacturing method thereof |
| CN108761132A (en) * | 2018-08-08 | 2018-11-06 | 苏州祥玉宏智能科技有限公司 | A kind of multi-axis accelerometer of piezoelectric rods containing core |
| CN112509440A (en) * | 2020-10-29 | 2021-03-16 | 扬州大学 | Human otolith organ solid model based on liquid core piezoelectric material rod |
| CN112258956A (en) * | 2020-10-29 | 2021-01-22 | 扬州大学 | Human otolith organ solid model based on liquid core bionic cells |
| CN112461411A (en) * | 2020-10-29 | 2021-03-09 | 扬州大学 | Bionic skin based on liquid core organic piezoelectric fiber |
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