CN208588778U - A kind of electric-field sensor based on electrostriction effect - Google Patents
A kind of electric-field sensor based on electrostriction effect Download PDFInfo
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- CN208588778U CN208588778U CN201821257665.0U CN201821257665U CN208588778U CN 208588778 U CN208588778 U CN 208588778U CN 201821257665 U CN201821257665 U CN 201821257665U CN 208588778 U CN208588778 U CN 208588778U
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- electric
- foil gauge
- electrostriction
- field sensor
- block shell
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Abstract
A kind of electric-field sensor based on electrostriction effect, it includes by electrostriction ceramics block shell, groove body is equipped in electrostriction ceramics block shell, foil gauge is equipped in groove body, foil gauge includes foil gauge substrate, and foil gauge substrate is equipped with grid body structure, and grid body structure is connected by one end of endpoint and connecting wire, the other end of connecting wire is connect with bridge circuit, and foil gauge is sticked on electrostriction ceramics block shell inside groove body wall by alite paste.The purpose of this utility model is to provide for that a kind of structure simplifies, is small in size, power consumption low energy realizes the electric-field sensor of electric field intensity measuremenrt very well.
Description
Technical field
The utility model relates to technical field of electric field measurement, specifically a kind of electric field sensing based on electrostriction effect
Device.
Background technique
Electric-field sensor is a kind of sensor with good anti-electromagnetic interference capability and rapid response speed, main to use
To measure electric field strength and potential.Electric-field sensor is widely used in national defence, aerospace, meteorological detection, electric power, earthquake prediction
Etc. multiple fields.It, can be with by the monitoring that electric-field sensor changes ground and aerial atmospheric electric field for example, in meteorological field
Obtain accurate weather information；In industrial circle, the Potential Distributing and electric field in electrostatic field sensor monitoring industrial environment are utilized
Distribution facilitates us and adopts an effective measure in time the generation prevented accident.
Currently, our common electric-field sensors have very much, as corona probe electric-field sensor, MEMS electric-field sensor,
Capacitive battery field sensor and optical electric field sensor etc..Corona probe electric-field sensor is mainly made using the biggish resistance of resistance value
Corona tip electric current and electric field strength are linear to be realized, but corona probe electric-field sensor volume is larger, some spies
Needle even needs to reach 2m, and it is easy to be influenced by weather conditions, and when the weather such as sleet use, its reliability can be bright
It is aobvious to reduce；Though MEMS electric-field sensor as a kind of currently more popular sensor its with small in size, light-weight, power consumption
Low advantage, but its manufacture difficulty is larger, the requirement to manufacture craft is very high and reliability and precision are also unable to reach tradition
The standard of technique；Capacitive battery field sensor is also a kind of widely used sensor, its structure is simple, small in size, adaptability
By force, temperature stability is good, but the influence of the extraneous factors such as gravitation susceptible to static electricity and temperature and humidity in actual use, causes to measure
Inaccuracy, and its accuracy is inadequate, can not accomplish precise measurement；Optical electric field sensor be current all electric field sensings its
Middle precision is preferably a kind of, it can change this feature and carry out photoelectricity to light and turn using light by phase difference after crystal
It changes, can effectively measure the variation of electric field in this way, however this utilize optical electric field sensor sheet made of photoelectric effect
Body optical path is complicated, sufficiently bulky, not readily portable, while but also this equipment can not be produced in enormous quantities.
Summary of the invention
The purpose of this utility model is to provide for that a kind of structure simplifies, is small in size, power consumption low energy realizes electric field strength very well
The electric-field sensor of measurement.
The purpose of utility model is achieved in that
A kind of electric-field sensor based on electrostriction effect, it includes by electrostriction ceramics block shell, electrostriction
It is equipped with groove body in ceramic block shell, foil gauge is equipped in groove body, foil gauge includes foil gauge substrate, and foil gauge substrate is equipped with
Grid body structure, grid body structure are connected by one end of endpoint and connecting wire, and the other end of connecting wire is connect with bridge circuit,
Foil gauge is sticked on electrostriction ceramics block shell inside groove body wall by alite paste.
Above-mentioned electrostriction ceramics block shell is rectangular parallelepiped structure.
Above-mentioned electrostriction ceramics block shell is made of macromolecule polymeric material.
Above-mentioned foil gauge uses filament winding formula foil gauge, and middle section is made of grid body structure resistance wire and in folding shape
Shape.
Above-mentioned foil gauge substrate is epoxy resin thin film.
Above-mentioned grid body structure is made of constantan foil.
Above-mentioned conducting wire uses four core shielding lines.
By adopting the above technical scheme, following technical effect can be brought:
1), utility model device, can be in electricity using its electrostriction effect using electrostriction ceramics as sensing element
Existing electric field around is showed in the form of mechanical deformation under the environment of field.Compared to comparison used at present widely by pressing
The reliability of electric material, the utility model is higher and hysteresis is small, and measurement accuracy is higher, is more advantageous to the measurement to electric field.
2) it, is bonded a piece of foil gauge in utility model device as inverting element, is made pottery by foil gauge and electrostriction
Mechanical deformation occurs together for porcelain, so that the deformation quantity of electrostriction ceramics is converted to the resistance change of foil gauge, measures in this way
It will be easier, and due to foil gauge volume also very little itself, thus make manufactured electric-field sensor volume smaller.
3), utility model device has used 610 type epoxy phenolics alite pastes to stretch strain gauge adhesion electroluminescent
On contracting is ceramic, the thickness of the alite paste is only 0.005mm, with sluggish, transformation is small, extend capacity height and adaptive temperature range is wide
The features such as, error is obtained when effectively reducing the utility model measurement while the fastness that ensure that stickup.
4), utility model device is small in size, production is simple, and with high resolution, stability is good, precision is high, low in energy consumption
The advantages that, and manufacturing cost is lower can be widely applied to scientific research and engineering field, provides good experiment base for each research field
Plinth also can be that electric network swim monitoring, electric network fault maintenance etc. provide better safety guarantee.
Detailed description of the invention
The utility model is described in further detail with reference to the accompanying drawings and examples:
Fig. 1 is the external overall structure diagram of the utility model；
Fig. 2 is the overall structure diagram of the utility model；
Fig. 3 is the structural schematic diagram of foil gauge in the utility model；
Fig. 4 is the schematic diagram that the utility model is connect with external circuit.
Specific embodiment
A kind of electric-field sensor based on electrostriction effect as shown in Figures 1 to 4, it include by electrostriction ceramics block outside
Shell 1, electrostriction ceramics block shell 1 is interior to be equipped with groove body, and foil gauge 2 is equipped in groove body, and foil gauge 2 includes foil gauge substrate 5,
Foil gauge substrate 5 is equipped with grid body structure 6, and grid body structure 6 is connect by endpoint 7 with one end of connecting wire 8, connecting wire 8
The other end connect with bridge circuit 3, foil gauge 2 is sticked in 1 inside groove body wall of electrostriction ceramics block shell by alite paste 4
On.
Specifically, the electrostriction ceramics block shell is made of the PLZT materials of better performances, volume be 8mm ×
8mm×20mm。
The foil gauge uses BX120-15AA type foil gauge, and size can be with electrostriction ceramics block shell kissing
It closes.
The alite paste uses 610 type epoxy phenolics alite pastes, which is only 0.005mm, have it is sluggish,
It changes in quality the features such as small, extension capacity is high and adaptive temperature range is wide.
The conducting wire needs are welded again after strain gauge adhesion is good.
The conductive line surfaces are covered with the insulating layer made of polytetrafluoroethylene material.
The electrostriction ceramics block shell 1 is rectangular parallelepiped structure, can guarantee 1 surface of electrostriction ceramics block shell in this way
Product maximizes, the electric field in the better feeling space of energy, the laterally setting of electrostriction ceramics block shell 1, the opening direction of groove body
Horizontal direction is easier the stickup of foil gauge 2, and then foil gauge insertion groove body is pasted on electrostriction ceramics block, it is ensured that envelope
Dress does not interfere with the telescopicing performance of foil gauge.
The electrostriction ceramics block shell 1 is made of macromolecule polymeric material, has good ductility and will not be right
Ceramic block is experienced electric field and is impacted.
The macromolecule polymer material is phenolic resin, polycarbonate or polytetrafluoroethylene (PTFE).
The foil gauge 2 uses filament winding formula foil gauge, and middle section is made of grid body structure 6 resistance wire and in folding shape
Shape can allow foil gauge to have better ductility, it is easier to which stress speeds reaction speed, can also preferably radiate, and resistance value
Variation becomes apparent from, volume is smaller.
The foil gauge substrate 5 is epoxy resin thin film, has preferable insulating properties and will not be to the shape of resistance wire in this way
Change impacts, and strain effects can maximize while can play protective action.
The grid body structure 6 is made of constantan foil, is easier to paste while guaranteeing ductility.
The conducting wire 8 uses four core shielding lines, can more preferably measure dynamic change when strain.
The electric-field sensor at work, using following steps:
1), when electrostriction ceramics block 1 is by external electrical field, concertina type change, type can occur for electrostriction ceramics block 1
The relational expression of variable and electric field value is as follows:
S=M × E2；
In formula, S is the overall strain amount of electrostriction ceramics block；The electrostriction coefficient factor of M electrostriction material thus；
E is that the electric field value that electrostriction ceramics is received obtains size.
Wherein, the factor M of electrostriction coefficient=Q ε2, Q is the electrostriction coefficient of electrostriction material；ε is that dielectric is normal
Number.
2), when electrostriction ceramics block generation type becomes, answering in the foil gauge 2 that is pasted on electrostriction ceramics block 1
Becoming piece sensitive grid 6 can be as deformation occurs together for electrostriction ceramics block 1.Wherein, the variation relation formula of foil gauge is as follows:
In formula, Δ R is the resistance change of foil gauge；R is the original resistance value of foil gauge, is 120 Ω；K is foil gauge
Proportionality coefficient, the utility model relates to middle k=2.05；ε is the strain that foil gauge occurs.
3), when 6 generation type of sensitive grid becomes, the resistance value of foil gauge 2 changes, at this time 9 both end voltage of electric bridge no longer phase
Deng, there is voltage difference, by the measurement of the voltage difference to output be just able to achieve the utility model proposes electric-field sensor to electricity
The measurement of field.
Wherein, bridge output voltage difference calculation formula are as follows:
Wherein, U0It is poor for the output voltage of bridge circuit；RXTo strain sheet resistance；UinFor supply voltage, survey for convenience
It measures, resistance R in electric bridge1=R2=R3=120 Ω.
Claims (7)
1. a kind of electric-field sensor based on electrostriction effect, it is characterised in that: it includes by electrostriction ceramics block shell
(1), it is equipped with groove body in electrostriction ceramics block shell (1), is equipped with foil gauge (2) in groove body, foil gauge (2) includes foil gauge
Substrate (5), foil gauge substrate (5) are equipped with grid body structure (6), and grid body structure (6) passes through endpoint (7) and connecting wire (8)
One end connection, the other end of connecting wire (8) are connect with bridge circuit (3), and foil gauge (2) is sticked by alite paste (4) in electricity
It causes on Electrostrictive Ceramic block shell (1) inside groove body wall.
2. the electric-field sensor according to claim 1 based on electrostriction effect, it is characterised in that: the electrostriction
Ceramic block shell (1) is rectangular parallelepiped structure.
3. the electric-field sensor according to claim 1 or 2 based on electrostriction effect, it is characterised in that: described electroluminescent
Electrostrictive Ceramic block shell (1) is made of macromolecule polymeric material.
4. the electric-field sensor according to claim 1 based on electrostriction effect, it is characterised in that: the foil gauge
(2) filament winding formula foil gauge is used, middle section is made of grid body structure (6) resistance wire and in collapsed shape.
5. the electric-field sensor according to claim 1 based on electrostriction effect, it is characterised in that: the strain chip base
Piece (5) is epoxy resin thin film.
6. the electric-field sensor according to claim 1 based on electrostriction effect, it is characterised in that: the grid body structure
(6) it is made of constantan foil.
7. the electric-field sensor according to claim 1 based on electrostriction effect, it is characterised in that: the conducting wire (8)
Using four core shielding lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821257665.0U CN208588778U (en) | 2018-08-06 | 2018-08-06 | A kind of electric-field sensor based on electrostriction effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821257665.0U CN208588778U (en) | 2018-08-06 | 2018-08-06 | A kind of electric-field sensor based on electrostriction effect |
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| Publication Number | Publication Date |
|---|---|
| CN208588778U true CN208588778U (en) | 2019-03-08 |
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| CN201821257665.0U Expired - Fee Related CN208588778U (en) | 2018-08-06 | 2018-08-06 | A kind of electric-field sensor based on electrostriction effect |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108957150A (en) * | 2018-08-06 | 2018-12-07 | 三峡大学 | A kind of electric-field sensor based on electrostriction effect |
| CN111672701A (en) * | 2020-05-26 | 2020-09-18 | 厦门鑫奥格自动化设备有限公司 | Extrusion type dispensing needle |
-
2018
- 2018-08-06 CN CN201821257665.0U patent/CN208588778U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108957150A (en) * | 2018-08-06 | 2018-12-07 | 三峡大学 | A kind of electric-field sensor based on electrostriction effect |
| CN111672701A (en) * | 2020-05-26 | 2020-09-18 | 厦门鑫奥格自动化设备有限公司 | Extrusion type dispensing needle |
| CN111672701B (en) * | 2020-05-26 | 2022-02-11 | 厦门鑫奥格自动化设备有限公司 | Extrusion type dispensing needle |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190308 Termination date: 20190806 |
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| CF01 | Termination of patent right due to non-payment of annual fee |