CN109990696A - A kind of resistance-type curvature sensor - Google Patents
A kind of resistance-type curvature sensor Download PDFInfo
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- CN109990696A CN109990696A CN201910264112.0A CN201910264112A CN109990696A CN 109990696 A CN109990696 A CN 109990696A CN 201910264112 A CN201910264112 A CN 201910264112A CN 109990696 A CN109990696 A CN 109990696A
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- conductive film
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- 229910001006 Constantan Inorganic materials 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 6
- 235000013870 dimethyl polysiloxane Nutrition 0.000 claims description 6
- 229920005839 ecoflex® Polymers 0.000 claims description 6
- 229910001120 nichrome Inorganic materials 0.000 claims description 6
- CXQXSVUQTKDNFP-UHFFFAOYSA-N octamethyltrisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C CXQXSVUQTKDNFP-UHFFFAOYSA-N 0.000 claims description 6
- 238000004987 plasma desorption mass spectroscopy Methods 0.000 claims description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 6
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 6
- 229910003460 diamond Inorganic materials 0.000 claims description 5
- 239000010432 diamond Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 3
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
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- 229910021389 graphene Inorganic materials 0.000 claims description 3
- 150000002739 metals Chemical class 0.000 claims description 3
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- 230000000737 periodic effect Effects 0.000 claims description 3
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- 238000013461 design Methods 0.000 abstract description 5
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/28—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring contours or curvatures
Abstract
The present invention relates to a kind of resistance-type curvature sensor, this design can significantly increase the elastic range of existing resistance-type curvature sensor.Including insulating substrate, adhesive layer and conductive film, the conductive film is bonded by adhesive layer respectively in the both side surface of the insulating substrate；Conductive film is curvilinear structures or mesh-structured.Compared to existing optical fiber type curvature sensor, the configuration of the present invention is simple is low in cost, and compared to existing resistance-type curvature sensor, range of the invention is bigger.
Description
Technical field
The invention belongs to curvature sensor design fields, and in particular to a kind of resistance-type curvature sensor.
Background technique
The curvature of object is a very important geometric parameter, and accurately measurement is for medical treatment & health monitoring or industry
Production has a very important significance.Joint rehabilitation training monitoring, the monitoring of teen-age sitting posture and the monitoring patient of sportsman
Monitoring of respiration can be realized by curvature sensor.
Existing curvature sensor product it is many kinds of, principle is including the use of optical fiber grating measurement method, magnetic measurement
Method, acoustic measurement method, however most of these methods realize that process is more complicated, it is relatively high to design and produce cost, uses
Range has certain limitation.Chinese patent CN201611048366 proposes a kind of mild curvatures sensor, however due to metal
The limitation of extensibility, measurable process is smaller, and when long-time dynamic monitoring is easy to happen fatigue rupture.
Summary of the invention
It is the shortcomings that for existing curvature sensor, this object of the present invention is to provide a kind of resistance-type curvature sensor
Design can significantly increase the elastic range of curvature sensor.
The technical solution of the present invention is as follows:
A kind of resistance-type curvature sensor, including insulating substrate, adhesive layer and conductive film, the two sides table of the insulating substrate
The conductive film is bonded by adhesive layer respectively on face；
The conductive film is curvilinear structures or mesh-structured.
Further, the conductive film is curvilinear structures, and the curvilinear structures include and the surveyed song of the curvature sensor
Consistent first line segment of tangential direction of rate circle and the second line segment inconsistent with the tangential direction of the surveyed circle of curvature；
The width of first line segment is less than the width with the second line segment, to realize biggish sensitivity coefficient.
Further, first line segment is straightway；
The second line segment is curved section or straightway.
Further, the conductive film is mesh-structured, and the mesh form on the conductive film is identical or different；It is described to lead
Mesh size on electrolemma is identical or different.
Further, the mesh on the conductive film is in periodic arrangement.
Further, the mesh form is hexagon, ellipse or diamond shape；Preferably, when the mesh form is six
It is minimum with the width of the consistent cable of tangential direction of the surveyed circle of curvature when shape hole of side.
Further, the conductive film both ends are separately connected lead-out wire.
Further, the adhesive layer is Elastic flexible glue；Preferably OCA glue film, Silbione Elastic flexible glue, PDMS and
Ecoflex silicon rubber.
Further, further include encapsulating film, the insulating substrate package encapsulation of conductive film will be bonded with；Preferably, the envelope
Dress film is elastic film；It is highly preferred that the encapsulating film is that PDMS is thin or Ecoflex film.
Further, the material of the conductive film is constantan, new constantan, nichrome, nichrome aluminum alloy, ferrum-chromium-aluminum conjunction
The metals such as gold, platinum, platinum-tungsten alloys；Single crystal silicon semiconductor；Any one of graphene；The material of the insulating substrate is that polyamides is sub-
Any one of amine, phenolic resin, epoxy resin.
Technical effect disclosed by the invention are as follows:
(1) optical fiber type curvature sensor is compared, the configuration of the present invention is simple is low in cost.
(2) compared to previous mild curvatures sensor, since adhesive layer has coordinated certain deformation, curve knot using flexible glue
Structure is mesh-structured in itself again with good tensility, so range of the invention is bigger, number is can be improved in elastic range
Times.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.Wherein:
Fig. 1 is the main view of curvature sensor provided by the invention；
Fig. 2 is a kind of structural schematic diagram of curved configuration conductive film；
Fig. 3 is the structural schematic diagram of another curved configuration conductive film；
Fig. 4 be on conductive film be respectively hexagon, diamond shape and ellipse mesh-structured schematic diagram；
Fig. 5 is a kind of top view for the resistance-type curvature sensor that mesh is hexagon；
Fig. 6 is the partial enlarged view of mesh-structured part among Fig. 5；
Fig. 7 is a kind of top view for the resistance-type curvature sensor that mesh is diamond shape；
Wherein, the region for filling oblique line indicates conductive film, and the region for filling cross grid lines indicates insulating substrate, and filling is thin
The region of point indicates Elastic flexible glue.
Appended drawing reference:
1. insulating substrate, 2. conductive films, 21. first line segments, 22. second line segments, a. hexagonal meshes, a1. compared with fine-structure mesh line,
A2. compared with wide screen line, b. diamond-shaped meshes, c. ellipse mesh, 3. Elastic flexible glues.
Specific embodiment
The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with specific embodiments.The solution of each example through the invention
The mode released, which provides, to be not intended to limit the present invention.In fact, those skilled in the art will be clear that, the scope of the present invention is not being departed from
Or in the case where spirit, it can modify in the present invention and modification.For example, being illustrated or described as a part of one embodiment
Feature can be used for another embodiment, to generate another embodiment.Thus, it may be desirable to which the present invention includes to be included into institute
Such modifications and variations in the range of attached claim and its equivalent.
A kind of resistance-type curvature sensor, as shown in Figure 1, including insulating substrate 1, adhesive layer and conductive film 2, insulating substrate
Conductive film 2 is bonded by adhesive layer respectively on 1 two sides；Conductive film 2 can be curvilinear structures or be mesh-structured.
When conductive film 2 is curvilinear structures, as shown in Figures 2 and 3, which includes and the curvature sensor institute
Consistent first line segment 21 of tangential direction of the survey circle of curvature and the second line segment inconsistent with the tangential direction of the surveyed circle of curvature
22；The width of the first line segment 21 is less than the width with second line segment 22 simultaneously, and the purpose of such setting is to undertake electricity compared with filament section
The function of resistive, it is specific that is thinner line generates resistance variations when foil gauge stretches or compresses, and its resistance value is opposite
It is bigger in bevel edge, therefore occupy an leading position.And have the straightway of angle or curved section wider with that should change direction, undertake expansion elasticity
The function of range.
It is consistent with the tangential direction of the surveyed circle of curvature on curved shape conductive film 22 in one embodiment of the present invention
First 2121 generally-straight sections of line segment, and the second line segment 2222 inconsistent with the tangential direction of the surveyed circle of curvature then can be
Straightway may be curved section, and when being arranged to curved section, the range of curvature sensor is bigger.
When conductive film 2 is mesh-structured, in order to improve conductivity uniformity, the preferably mesh on conductive film 2 is arranged in the period
Column.Mesh form on conductive film 2 can be identical or different, and the size of mesh can be identical or different.Guaranteeing conduction uniformly
Property under the premise of, the mesh form of conductive film 2 is preferably identical and is in periodic arrangement.
In one embodiment of the present invention, as shown in figure 4, mesh form can be hexagonal meshes a, oval mesh
C or diamond-shaped meshes b under the premise of keeping sensitivity coefficient while guaranteeing to improve draftability, can also use other certainly
Meet the shape mesh that production requires.As shown in figure 5, being the structural schematic diagram of the mesh-structured conductive film 2 for being hexagon, such as scheme
It is the structural schematic diagram of the mesh-structured conductive film 2 for diamond shape shown in 7.
In one embodiment of the present invention, 2 outer profile of conductive film is rectangle, and mesh form is hexagon, hexagon net
It is minimum with the width of the consistent cable of tangential direction of the surveyed circle of curvature in a of hole.
In one embodiment of the present invention, the thickness of conductive film 2 is less than 0.1mm, preferably 0.001-0.01mm, insulation
The thickness of substrate 1 can be 0.01-2mm, preferably 0.01-0.5mm.
In one embodiment of the present invention, 2 both ends of conductive film are separately connected lead-out wire, connect to measure with external circuit
It connects.
In one embodiment of the present invention, adhesive layer is less than the Elastic flexible glue 3 of 100MPa using elasticity modulus；It is excellent
It is selected as OCA glue film, Silbione Elastic flexible glue 3, PDMS and Ecoflex silicon rubber.
In one embodiment of the present invention, conductive film 2 it is mesh-structured be punched on conductive film 2, then will punching after
Conductive film 2 be pasted onto insulating substrate 1, the width for hexagonal hole, with the consistent cable of tangential direction of the surveyed circle of curvature
Degree is minimum.As shown in fig. 6, for the partial enlarged view of part hexagonal meshes a in Fig. 5, as can be seen that hexagonal meshes in the figure
In a, a1 is shown compared with fine-structure mesh line, and a2 is shown compared with wide screen line, and the purpose of such setting is to undertake resistance variations compared with fine-structure mesh line
Function, it is specific that is thinner cable is tension or in compression when curvature sensor is bent, therefore resistance can change, and its resistance value
It is bigger relative to bevel edge, therefore occupy an leading position.There is the line segment of angle wider with draw direction, undertakes the function for expanding elastic range
Energy.
When mesh on conductive film 2 makes, predetermined pattern can be pressed for conductive film 2 using laser or plasma etching machine
It cuts or etches and is mesh-structured.
In one embodiment of the present invention, insulating substrate 1 is thin polymer film, can be by conductive film 2 and polymer thin
Film is bonded, and when bonding, can select Elastic flexible glue 3 that two pore structure conductive films 2 of throwing the net are pasted the two of thin polymer film
On face.As shown in Figure 1, soft by elasticity with two surfaces of thin polymer film respectively for two conductive films 2 provided by the invention
The main view of curvature sensor after the bonding of glue 3, it can clearly be seen that the distribution of each layer, bilevel conductive film 2 covers respectively
It covers in insulating substrate 1, it is Nian Jie with insulating substrate 1 that the two passes through Elastic flexible glue 3 respectively.
After the completion of bonding, it is also necessary to which curvature sensor both ends are welded or be bonded with the lead connecting with external circuit, lead
After being provided with, it can also decide whether to be packaged it according to the specifically used environment of curvature sensor.Work as use
Environment relative closure can choose and not encapsulate when being not likely to produce dust or environmental pollution.
When needing to encapsulate, it can choose elastic film and be packaged, the package envelope of insulating substrate 1 of conductive film 2 will be covered with
Dress；Encapsulating film can select existing PDMS thin or Ecoflex film.
The material of conductive film 2 provided in the present invention is constantan, new constantan, nichrome, nichrome aluminum alloy, ferrum-chromium-aluminum conjunction
The metals such as gold, platinum, platinum-tungsten alloys；Single crystal silicon semiconductor；Any one of graphene.
The material of insulating substrate 1 is any one of polyimides, phenolic resin, epoxy resin.
Embodiment:
A kind of resistance-type curvature sensor, the mesh form on conductive film therein are hexagon.
Size design: PI film thickness 0.4mm, two layers of constantan film thickness 0.005mm, two layers of elastic gum thickness 0.05mm,
Reticular structure along draw direction length along path 20mm, wide 0.05mm, it is wide with draw direction at the length along path 20mm at 60 degree of angles
0.7mm, the chamfer radius between line segment are 1mm.
Material elastic strain limit itself is 0.3%, and curvature sensor range is 12m-1, designed by mesh, curvature passes
The elastic range of sensor increases to 72m-1More than, the resistance change rate of two sides conductive film is about 0.26% when reaching maximum range.
Lead is accessed into Huygens's electric bridge, if input voltage is 5V, the available ten millivolt level voltage outputs of maximum.
The above is only a preferred embodiment of the present invention, is not intended to restrict the invention, and comes for those skilled in the art
It says, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any modification, equivalent
Replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of resistance-type curvature sensor, which is characterized in that including insulating substrate, adhesive layer and conductive film, the insulation lining
The conductive film is bonded with by adhesive layer respectively in the both side surface at bottom；
The conductive film is curvilinear structures or mesh-structured.
2. curvature sensor according to claim 1, which is characterized in that
The conductive film is curvilinear structures, and the curvilinear structures include the tangential direction with the surveyed circle of curvature of the curvature sensor
Consistent first line segment and the second line segment inconsistent with the tangential direction of the surveyed circle of curvature；
The width of first line segment is less than the width with the second line segment, to realize biggish sensitivity coefficient.
3. curvature sensor according to claim 1, which is characterized in that
First line segment is straightway；
The second line segment is curved section or straightway.
4. curvature sensor according to claim 1, which is characterized in that
The conductive film be it is mesh-structured, the mesh form on the conductive film is identical or different；Mesh on the conductive film
Size is identical or different.
5. curvature sensor according to claim 4, which is characterized in that
Mesh on the conductive film is in periodic arrangement.
6. curvature sensor according to claim 4, which is characterized in that
The mesh form is hexagon, ellipse or diamond shape；
Preferably, the width when the mesh form is hexagonal hole, with the consistent cable of tangential direction of the surveyed circle of curvature
It is minimum.
7. curvature sensor according to claim 1-4, which is characterized in that
The conductive film both ends are separately connected lead-out wire.
8. curvature sensor according to claim 1, which is characterized in that
The adhesive layer is Elastic flexible glue；
Preferably OCA glue film, Silbione Elastic flexible glue, PDMS and Ecoflex silicon rubber.
9. curvature sensor according to claim 1-4, which is characterized in that
Further include encapsulating film, the insulating substrate package encapsulation of conductive film will be bonded with；
Preferably, the encapsulating film is elastic film；
Preferably, the encapsulating film is PDMS film or Ecoflex film.
10. curvature sensor according to claim 1-4, which is characterized in that
The material of the conductive film is constantan, new constantan, nichrome, nichrome aluminum alloy, Aludirome, platinum, platinum-tungsten alloys
Equal metals；Single crystal silicon semiconductor；Any one of graphene；
The material of the insulating substrate is any one of polyimides, phenolic resin, epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910264112.0A CN109990696A (en) | 2019-04-03 | 2019-04-03 | A kind of resistance-type curvature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910264112.0A CN109990696A (en) | 2019-04-03 | 2019-04-03 | A kind of resistance-type curvature sensor |
Publications (1)
| Publication Number | Publication Date |
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| CN109990696A true CN109990696A (en) | 2019-07-09 |
Family
ID=67132192
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910264112.0A Pending CN109990696A (en) | 2019-04-03 | 2019-04-03 | A kind of resistance-type curvature sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111272063A (en) * | 2020-03-09 | 2020-06-12 | 江苏柔世电子科技有限公司 | Resistance type curvature sensor |
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| US7434480B2 (en) * | 2005-12-14 | 2008-10-14 | The Boeing Company | Methods and systems for using active surface coverings for structural assessment and monitoring |
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| CB03 | Change of inventor or designer information | ||
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Inventor after: Liu Hao Inventor before: Su Yewang Inventor before: Liu Hao |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20221111 Address after: 101407 room 103, building 1, yard 33, Yanqi Road, Yanqi Economic Development Zone, Huairou District, Beijing Applicant after: Zhongke Xingxing (Beijing) Technology Co.,Ltd. Address before: 226200 No. 500, Linyang Road, economic development zone, Huilong Town, Qidong City, Nantong City, Jiangsu Province Applicant before: JIANGSU ROUSHI ELECTRONIC TECHNOLOGY Co.,Ltd. |
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Application publication date: 20190709 |