CN205785605U - The drop impact pressure transducer of embedded type PVDF piezoelectric membrane - Google Patents
The drop impact pressure transducer of embedded type PVDF piezoelectric membrane Download PDFInfo
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- CN205785605U CN205785605U CN201620505437.5U CN201620505437U CN205785605U CN 205785605 U CN205785605 U CN 205785605U CN 201620505437 U CN201620505437 U CN 201620505437U CN 205785605 U CN205785605 U CN 205785605U
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- piezoelectric membrane
- pvdf piezoelectric
- insulating barrier
- pressure transducer
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Abstract
This utility model belongs to sensor technical field, specifically disclose the drop impact pressure transducer of a kind of embedded type PVDF (Polyvinylidene Fluoride) piezoelectric membrane, including PVDF piezoelectric membrane, described PVDF piezoelectric membrane connects the wire having pressure signal to export, the whole outer surface of described PVDF piezoelectric membrane has been coated with the insulating barrier of anticreep effect, the outer surface of described insulating barrier has been coated with the waterproof layer of waterproof action, this PVDF piezoelectric membrane being coated with described insulating barrier and described waterproof layer is sealed in a protective housing, described wire is drawn in housing.This utility model has anti-electric conductivity and can imbed inside construction material, to obtain the stress value of reinforcing fiber cement-base composite material under high strain-rate.
Description
Technical field
This utility model relates to sensor technical field, particularly to a kind of embedded type PVDF piezoelectric membrane
Drop impact pressure transducer.
Background technology
At present, the pressure transducer that PVDF (Polyvinylidene Fluoride) piezoelectric property makes is utilized
Mainly it is made up of probe segment and signal processing circuit part, and mostly is the structure pasted in required test
Surface, when test structure caused structural vibration by impact so that paste body structure surface PVDF press
Force transducer produces vibration, is received by signal processing circuit part as electronic signals.But, a lot
PVDF pressure transducer can not directly imbed inside configuration, measures the material under its Impact Load high
Stress value under strain rate effect effect.It is combined particularly with the reinforcing fiber cement based with certain moisture content
Material, for the construction material such as concrete material, PVDF pressure transducer needs to carry out water-proofing treatment, this
The signal that sample is received, the signal of telecommunication that just will not being subjected to leaks electricity causes is having certain moisture content construction material
Middle propagation.
At present, based on PVDF (Polyvinylidene Fluoride) piezoelectric membrane pressure transducer, mainly
Concentrate on and stick in institute's geodesic structure surface, based on piezoelectric effect, ambient pressure is changed linear being converted into electricity
The change of lotus amount.For the PVDF pressure transducer of embedment inside configuration, especially embedment has and necessarily contains
The waterproof insulation anti-conduction measure of the internal PVDF piezoelectric film sensor of the construction material of water rate is also particularly to close
The technology of key.
Utility model content
The purpose of this utility model is to provide a to be had anti-conduction and can imbed rushing within construction material
Hit PVDF (Polyvinylidene Fluoride) the piezoelectric membrane pressure transducer under load action, to obtain
Obtain the stress value of reinforcing fiber cement-base composite material under high strain-rate.
The technical solution of the utility model is: the drop impact pressure sensing of embedded type PVDF piezoelectric membrane
Device, including PVDF piezoelectric membrane, described PVDF piezoelectric membrane connects the wire having pressure signal to export,
The outer surface of described PVDF piezoelectric membrane has been coated with the insulating barrier of anticreep effect, outside described insulating barrier
Surface has been coated with the waterproof layer of waterproof action, and this is coated with the PVDF piezoelectric membrane of insulating barrier and waterproof layer
Being sealed in a protective housing, described wire is drawn in housing.
It is preferred that the mode that described PVDF piezoelectric membrane uses scolding tin welding is connected with wire.
It is preferred that described insulating barrier is the insulation glue-line after air-drying.
It is preferred that described waterproof layer is epoxy resin layer.
It is preferred that described protective housing is metal shell, this metal shell includes sheet metal one and sheet metal two,
The surface of described sheet metal one has groove, the size of this groove and described insulating barrier and the waterproof layer of being coated with
PVDF piezoelectric membrane equivalently-sized；Described sheet metal two is bonded in sheet metal one by epoxide-resin glue
Together, make described groove become described protective housing and be coated with insulating barrier and waterproof layer described in accommodate
The cavity of PVDF piezoelectric membrane.
It is preferred that the material of described sheet metal one, sheet metal two is copper, aluminum or ferrum.
The beneficial effects of the utility model: this utility model uses scolding tin welding lead mode to connect PVDF pressure
Conductive film, and carry out insulation-encapsulated with liquid adhesive tape and epoxy resin, and use two-sided flake aluminum, Qi Zhongyi
Sheet flake aluminum designs groove for the PVDF piezoelectric membrane size after encapsulation, and by thin for PVDF piezoelectricity
Film is placed wherein, and another sheet flake aluminum covers on PVDF piezoelectric membrane surface, adopts between latter two flake aluminum
Carry out water-proofing treatment with epoxy resins insulation glue to paste together.PVDF pressure after processing in this way
The buiding material members such as fiber reinforced cement-based composite material and concrete material can directly be imbedded by sensor
Inside, and conduction will not be caused because construction material is aqueous and then produce the extra signal of telecommunication.This utility model
The material internal of required measurement can be imbedded, in order to obtain this structure under the high strain-rate effect of this kind of material and close
System；This utility model can effectively obtain reinforcing fiber cement based composite wood under high speed impact load action
Compressive stress numerical value under the high strain-rate effect of material, concrete material etc., can obtain this kind of building further
The stress strain curve of material.Blast Load can make structure be in large deformation state, but this practicality
Novel still can record building structure value of compressive stress under explosive load and Impact Load.
Accompanying drawing explanation
Fig. 1 is that PVDF piezoelectric membrane wire welds schematic diagram；
Fig. 2 is PVDF piezoelectric membrane wire and both positive and negative polarity pad detail drawing；
Fig. 3 is structural representation of the present utility model；
Fig. 4 is this utility model measurement numerical value in different buiding material members；
Fig. 4 (a) is the measurement numerical value in reinforcing fiber cement-base composite material beam；
Fig. 4 (b) is the measurement numerical value in plain concrete beam.
Description of reference numerals:
1, PVDF piezoelectric membrane；2, wire；3, sheet metal one；4, sheet metal two；5, insulating barrier and
Waterproof layer；6, positive pole；7, negative pole；8, positive pole pad；9, negative pole pad；3-1, groove.
Detailed description of the invention
Below in conjunction with the accompanying drawings, a detailed description of the invention of the present utility model is described in detail, but it should
Understand that protection domain of the present utility model is not limited by detailed description of the invention.
Seeing Fig. 3, this utility model embodiment provides the punching of dropping hammer of a kind of embedded type PVDF piezoelectric membrane
Hitting pressure transducer, including PVDF piezoelectric membrane 1, described PVDF piezoelectric membrane 1 connects has pressure to believe
Number output wire 2, the outer surface of described PVDF piezoelectric membrane 1 has been coated with the insulation of anticreep effect
Layer, the outer surface of described insulating barrier has been coated with the waterproof layer of waterproof action, and this is coated with insulating barrier and waterproof
The PVDF piezoelectric membrane 1 of layer is sealed in a protective housing, and described wire 2 is drawn in housing.
Further, the mode that described PVDF piezoelectric membrane 1 uses scolding tin to weld is connected with wire 2.As
Shown in Fig. 1, the positive pole 6 with PVDF piezoelectric membrane 1 that just goes between of wire 2 is connected through positive pole pad 8,
The negative lead of wire 2 is connected through negative pole pad 9 with the negative pole 7 of PVDF piezoelectric membrane 1.Wire with
After PVDF piezoelectric membrane welds, the surface of whole PVDF piezoelectric membrane 1 includes that positive and negative electrode welds
Point all covers through insulating barrier and waterproof layer 5 at interior all conducting positions, as in figure 2 it is shown, including warp
Insulating barrier and waterproof layer 5 cover later positive and negative electrode pad position.
Further, described insulating barrier is the insulation glue-line after air-drying.
Further, described waterproof layer is epoxy resin layer.
Further, described protective housing is metal shell, and this metal shell includes sheet metal 1 and metal
Sheet 24, the surface of described sheet metal 1 has groove 3-1, and the size of this groove 3-1 is coated with described
The PVDF piezoelectric membrane 1 of insulating barrier and waterproof layer equivalently-sized；Described sheet metal 24 passes through asphalt mixtures modified by epoxy resin
Fat glue bonds together with sheet metal 1, makes described groove 3-1 become described protective housing for accommodating
State the cavity of the PVDF piezoelectric membrane 1 being coated with insulating barrier and waterproof layer.Wherein metal can have strong
Toughness and structural strengthening, will not crush under the effect of impulsive force.PVDF piezoelectric membrane 1 specifically uses essence
The PVDF piezoelectric membrane that amount electronics (Shenzhen) company limited produces；Model is DT series, is mainly used in
Dynamic strain indicator and contact vibration or impulse detection.Specifically used essence is measured electronics (Shenzhen) company limited and is produced
Polyvinylidene fluoride (PVDF) piezoelectric membrane.
Further, described sheet metal 1, the material of sheet metal 24 are copper, aluminum or ferrum.
In sum, to provide a kind of embedded type polyvinylidene fluoride (PVDF) piezoelectricity thin for this utility model
The drop impact pressure transducer of film, specifically used essence measures poly-inclined two that electronics (Shenzhen) company limited produces
Fluorothene (PVDF) piezoelectric membrane, uses scolding tin welding lead mode to connect polyvinylidene fluoride (PVDF)
Piezoelectric membrane, and carry out insulation-encapsulated with liquid adhesive tape and epoxy resin, and use two-sided flake aluminum, wherein
A piece of flake aluminum designs groove for PVDF (polyvinylidene fluoride) the piezoelectric membrane size after encapsulation,
And PVDF piezoelectric membrane is placed wherein, another sheet flake aluminum covers on PVDF piezoelectric membrane surface, finally
Use epoxy resins insulation glue to carry out water-proofing treatment between two flake aluminums to paste together.Locate in this way
PVDF pressure transducer after reason can directly imbed fiber reinforced cement-based composite material and concrete material
Inside buiding material members, and conduction will not be caused because construction material is aqueous and then produce extra telecommunications
Number.This utility model can imbed the material internal of required measurement, in order to obtains the high strain-rate of this kind of material
Constitutive relation under Zuo Yong；This utility model can effectively obtain reinforcing fiber under high speed impact load action
Compressive stress numerical value under the high strain-rate effect of cement-base composite material, concrete material etc., the most permissible
Obtain the stress strain curve of this kind of construction material.Blast Load can make structure be in large deformation shape
State, but this utility model still can record building structure pressure under explosive load and Impact Load
Stress value.
This utility model impact resistance under reinforcing fiber cement-base composite material beam is at Impact Load
Can study:
This utility model is used for monitoring reinforcing fiber cement-base composite material beam under drop impact effect
Force value, utilize under this utility model patent research drop impact effect reinforcing fiber cement based to be combined
Material beam and plain concrete beam health impact property.As shown in Fig. 4 (a), reinforcing fiber cement-base composite material beam
Carry out drop impact respectively 15 times, record PVDF piezoelectricity under drop impact effect each time thin
The piezoelectricity amplitude of membrane pressure sensor, wherein the pva-ecc beam in figure is reinforcing fiber cement-base composite material
Beam；Fig. 4 (b) records plain concrete beam at drop impact once, the PVDF piezoelectric membrane pressure recorded
The pressure magnitude of electric transducer.As shown in Figure 4, building under this utility model can obtain Impact Load
Build the force value of material.
Only several specific embodiments of the present utility model disclosed above, but, this utility model embodiment
Being not limited to this, the changes that any person skilled in the art can think of all should fall into guarantor of the present utility model
Protect scope.
Claims (6)
1. the drop impact pressure transducer of embedded type PVDF piezoelectric membrane, including PVDF piezoelectric membrane
(1), described PVDF piezoelectric membrane (1) connects the wire (2) having pressure signal to export, and its feature exists
In, the outer surface of described PVDF piezoelectric membrane (1) has been coated with the insulating barrier of anticreep effect, described
The outer surface of insulating barrier has been coated with the waterproof layer of waterproof action, and this is coated with insulating barrier and waterproof layer
PVDF piezoelectric membrane (1) is sealed in a protective housing, and described wire (2) is drawn in housing.
2. the drop impact pressure transducer of embedded type PVDF piezoelectric membrane as claimed in claim 1,
It is characterized in that, described PVDF piezoelectric membrane (1) uses the mode of scolding tin welding to be connected with wire (2).
3. the drop impact pressure transducer of embedded type PVDF piezoelectric membrane as claimed in claim 1,
It is characterized in that, described insulating barrier is the insulation glue-line after air-drying.
4. the drop impact pressure transducer of embedded type PVDF piezoelectric membrane as claimed in claim 1,
It is characterized in that, described waterproof layer is epoxy resin layer.
5. the drop impact pressure transducer of embedded type PVDF piezoelectric membrane as claimed in claim 1,
It is characterized in that, described protective housing is metal shell, and this metal shell includes sheet metal one (3) and gold
Belonging to sheet two (4), the surface of described sheet metal one (3) has groove (3-1), the chi of this groove (3-1)
Very little and the described PVDF piezoelectric membrane (1) being coated with insulating barrier and waterproof layer equivalently-sized；Described gold
Belong to sheet two (4) to be bonded together with sheet metal one (3) by epoxide-resin glue, make described groove (3-1)
Become described protective housing and be coated with the PVDF piezoelectric membrane (1) of insulating barrier and waterproof layer described in accommodate
Cavity.
6. the drop impact pressure transducer of embedded type PVDF piezoelectric membrane as claimed in claim 5,
It is characterized in that, described sheet metal one (3), the material of sheet metal two (4) are copper, aluminum or ferrum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620505437.5U CN205785605U (en) | 2016-05-30 | 2016-05-30 | The drop impact pressure transducer of embedded type PVDF piezoelectric membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620505437.5U CN205785605U (en) | 2016-05-30 | 2016-05-30 | The drop impact pressure transducer of embedded type PVDF piezoelectric membrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205785605U true CN205785605U (en) | 2016-12-07 |
Family
ID=59979073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620505437.5U Expired - Fee Related CN205785605U (en) | 2016-05-30 | 2016-05-30 | The drop impact pressure transducer of embedded type PVDF piezoelectric membrane |
Country Status (1)
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768569A (en) * | 2017-03-24 | 2017-05-31 | 沈阳建筑大学 | A kind of shock measuring system of array PVDF piezoelectric membranes |
| CN107356359A (en) * | 2017-09-19 | 2017-11-17 | 沈阳建筑大学 | A kind of PVDF piezoelectric membranes Impact monitoring sensor |
| CN107389253A (en) * | 2017-06-30 | 2017-11-24 | 南京理工大学 | Embedded dynamically pressure testing instrument |
| CN107462479A (en) * | 2017-08-02 | 2017-12-12 | 中国地震局工程力学研究所 | Test platform and drop weight test method for drop hammer tester |
| CN107727281A (en) * | 2017-09-07 | 2018-02-23 | 国营芜湖机械厂 | A kind of adhering method based on distributed pressure sensing technology |
| CN108534662A (en) * | 2018-04-12 | 2018-09-14 | 湖南科技大学 | A kind of principal strain directions sensor and determination method based on piezoelectric fabric |
| CN108955963A (en) * | 2018-08-20 | 2018-12-07 | 沈阳建筑大学 | It is a kind of can repeat impact stress monitoring sensor |
| CN109489895A (en) * | 2018-11-23 | 2019-03-19 | 深圳和而泰数据资源与云技术有限公司 | A kind of pressure-sensitivity test method and device |
-
2016
- 2016-05-30 CN CN201620505437.5U patent/CN205785605U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768569A (en) * | 2017-03-24 | 2017-05-31 | 沈阳建筑大学 | A kind of shock measuring system of array PVDF piezoelectric membranes |
| CN107389253A (en) * | 2017-06-30 | 2017-11-24 | 南京理工大学 | Embedded dynamically pressure testing instrument |
| CN107462479A (en) * | 2017-08-02 | 2017-12-12 | 中国地震局工程力学研究所 | Test platform and drop weight test method for drop hammer tester |
| CN107727281A (en) * | 2017-09-07 | 2018-02-23 | 国营芜湖机械厂 | A kind of adhering method based on distributed pressure sensing technology |
| CN107356359A (en) * | 2017-09-19 | 2017-11-17 | 沈阳建筑大学 | A kind of PVDF piezoelectric membranes Impact monitoring sensor |
| CN108534662A (en) * | 2018-04-12 | 2018-09-14 | 湖南科技大学 | A kind of principal strain directions sensor and determination method based on piezoelectric fabric |
| CN108955963A (en) * | 2018-08-20 | 2018-12-07 | 沈阳建筑大学 | It is a kind of can repeat impact stress monitoring sensor |
| CN109489895A (en) * | 2018-11-23 | 2019-03-19 | 深圳和而泰数据资源与云技术有限公司 | A kind of pressure-sensitivity test method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20180530 |