CN110411625A - A kind of dock strain gauge - Google Patents
A kind of dock strain gauge Download PDFInfo
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- CN110411625A CN110411625A CN201810400537.5A CN201810400537A CN110411625A CN 110411625 A CN110411625 A CN 110411625A CN 201810400537 A CN201810400537 A CN 201810400537A CN 110411625 A CN110411625 A CN 110411625A
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- strain gauge
- dock
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- gauge according
- conductive
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- 239000000835 fiber Substances 0.000 claims abstract description 59
- 239000004744 fabric Substances 0.000 claims description 29
- 239000000758 substrate Substances 0.000 claims description 17
- 238000009941 weaving Methods 0.000 claims description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 240000000249 Morus alba Species 0.000 claims description 3
- 235000008708 Morus alba Nutrition 0.000 claims description 3
- 229920004933 Terylene® Polymers 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 229920001940 conductive polymer Polymers 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 3
- 239000002861 polymer material Substances 0.000 claims description 3
- 239000012811 non-conductive material Substances 0.000 claims description 2
- 238000009987 spinning Methods 0.000 claims 1
- 239000004753 textile Substances 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000035945 sensitivity Effects 0.000 abstract description 4
- 238000005406 washing Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000005253 cladding Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000003032 molecular docking Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 239000002042 Silver nanowire Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 206010007247 Carbuncle Diseases 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000012356 Product development Methods 0.000 description 1
- 244000062793 Sorghum vulgare Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000002305 electric material Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
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- 230000004630 mental health Effects 0.000 description 1
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- 238000012544 monitoring process Methods 0.000 description 1
- 239000002070 nanowire Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The present invention relates to a kind of dock strain gauge, including two conductive fiber beams, every conductive fiber beam includes shrinkage part and the fluff structure that is electrically connected with shrinkage part；The fluff structure of two conductive fiber beams is connected to each other and is formed to binding, and the shrinkage part of two conductive fiber beams is electrically connected with external circuit respectively.The present invention has the advantages that capable of washing, not easily to fall off, anti motion interference, high resolution, high sensitivity and compatible with existing textile technology.
Description
Technical field
The present invention relates to sensor device technical fields, more particularly to a kind of dock strain gauge.
Background technique
With the development of science and technology with the demand of people's pursuit good life, it is with the products such as iwatch and millet bracelet
The wearable electronic product represented starts to continue to bring out out, these products not only change our life style, also right
Our physical and mental health has carried out effective monitoring.And in wearable device, the phase of the most key flexibility stress sensor
Pass technology often rests in the industrially developed country such as the U.S., Japan and Germany.
Currently, photoelectric sensor is when in use, can because light interference caused by environment, the colour of skin of wearer, sweat with
And the factors such as fat thickness, to be easy to cause measurement error, still further aspect is that wearable product currently on the market is main
Such as bracelet, wrist-watch, glasses electronic product based on " wearing ", can not also be truly realized can be worn as clothes, washable electricity
Sub- product.Solve this problem key be develop with cloth can be compatible flexible electronic device.
It cannot wear weaker with signal to solve the problems, such as that traditional strain gauge can only be worn, researchers gradually focus on
Material modification is carried out on class textile material, it is intended to realize really highly sensitive " wearable device ".Yong Wei et al. then leads to
It crosses after polyurethane fibre surface is coated with a certain amount of silver nanowires, forms a kind of spy with stress sensing property
Kind fiber, when this fiber is stretched, resistance can generate corresponding variation.Similarly, the sensor there is also sensitivity not
The problem of foot, when being bent finger, corresponding resistance change rate is only 0.02%.In addition, device in practical applications there is also
Silver nanowires be easy to happen oxidation and be detached from the problem of.Shu Gong et al. is then opened in terms of base material and electrode structure two
Research work is opened up, first using paper as base material, then nanowires of gold is modified in substrate and the fiber filament in paper is carried out
Cladding processing, to solve the nonconducting problem of substrate.On the other hand, the paper base material after modification is covered in interdigital electrode,
And protect to form sandwich by polydimethylsiloxanefilm film, to improve its electrical stability and stable structure.By this
The prepared strain gauge come out of method has good pliability and electric conductivity, while depositing using the structure of interdigital electrode
So that the electric current under stress dramatically increases.And Liu Mengmeng et al. is then based in Shu Gong et al. work
Make further optimization and improve, base material is substituted for common textile cloth, cladding processing is carried out by carbon nanotube,
Cost can be effectively reduced and simplify preparation process.In terms of electrode, then using the method for spraying, gold is carried out to textile cloth
The cladding processing for belonging to nickel, forms the cloth interdigital electrode of nickel coated, finally similarly with 3M company produced VHB adhesive plaster progress three
The assembling of civil administration structure, forms the strain gauge of cloth substrate.For paper base material, cloth substrate is with more excellent
Bending and tensile property, and be expected to it is compatible with existing distributing technique institute, and in the stress of the minimum detectable 60Pa of aspect of performance, most
Height can make 10 times of intensifying current initial current.
Although above-mentioned resistance-type strain gauge solves the problems, such as interfering vulnerable to objective factor for the sensor of photo-electric,
Flexible deformation, it is wearable, but still it is difficult to compatible with traditional cloth, especially followed without the same be cleaned multiple times of image of Buddha clothes
Ring uses.If the modification of functional layer, such as spraying plating conductive material layer mode are only carried out to the surface of traditional cloths, although energy
Realize flexibility stress sensing capabilities, can also be compatible with cloth, but often there is in use or be cleaned multiple times
Journey is easy to happen the problem of function film layer falls off.
Therefore, inventing one kind being capable of capable of washing, anti motion interference and the good dock stress sensing for dressing experience of guarantee
Device is the urgent need of the wearable electronic product development of intelligence.
Summary of the invention
Based on this, it is an object of the invention to overcome the deficiencies of the prior art and provide a kind of dock strain gauge,
Have the advantages that capable of washing, not easily to fall off, anti motion interference, high resolution, high sensitivity and compatible with existing textile technology.
To achieve the goals above, the technical solution adopted by the present invention are as follows:
A kind of dock strain gauge, including two conductive fiber beams, every conductive fiber beam include shrinkage part and
The fluff structure being electrically connected with shrinkage part；The fluff structure of two conductive fiber beams is connected to each other and is formed to binding, and two
The shrinkage part of conductive fiber beam is electrically connected with external circuit respectively.
The operation principle of the present invention is that: there is using two conducting fiber compositions the conductive fiber of fluff structure first
Beam, and the fluff structure by the way that two conductive fiber beams are arranged abuts each other contact and forms docking junction structure, this is to binding two
It is fixed in nonconducting flexible cloth substrate to form flexibility stress sensor under the action of a weaving knot；Secondly, sharp
It is electrically connected with conductive fiber Shu Zuowei lead with peripheral circuit realization, so that electric current flows through the docking junction with fluff structure
Structure；Finally, under the action of stress, bonded resistance can be declined with fluff structure, and the change rate of resistance and institute
By external force size at corresponding relationship, after removing external force, which can be restored to initial resistance value.
Compared with prior art, dock strain gauge of the present invention has the advantage that
(1) it is constructed based on conductive fiber using the conductive fiber beam with fluff structure to bonded strain gauge.
In the sensor, fluff structure can compress under the action of external carbuncle, cause to decline bonded resistance, pass through measurement
The change rate of junction resistance is docked to the size of induction force, while the electric conductivity for also using conductive fiber itself, may act as leading
Line woth no need to additional lead, and can single electrical fibre bundle the process that mechanical signal is converted into electrical signal can be realized, thus
To realize that the strain gauge of full textile material provides possibility.
(2) using the method compatible with weaving manufacture, dock strain gauge is woven into cloth or textile, nothing
Other materials need to be added, in the function and attribute for not changing cloth or textile itself, realize it is wearable, capable of washing, can be to people
The flexibility stress senser element that body-centered rate and pulse are effectively monitored.
In order to achieve better technical results, further technical improvements include the fluff structure, which includes more, leads
Electric fiber filament, there are multiple gaps between more conducting fibers；Two fluff structures, which are connected to each other, to be formed by binding packet
Contain partially electronically conductive fiber filament to be in contact with each other to form conductive channel, partially electronically conductive fiber filament fails to be in contact with each other to form conductive lead to
Road.
In order to achieve better technical results, further technical improvements include the numbers of the more conducting fibers
Amount is more than 10.
In order to achieve better technical results, further technical improvements include the shrinkage part and the fluffy knots
Structure is integral type setting, and one end of shrinkage part is arranged in fluff structure.
In order to achieve better technical results, further technical improvements include described shrinkage part one end and fluffy knots
Structure connection, the other end are connect with outwardly extending conducting wire.
In order to achieve better technical results, further technical improvements include, further include flexible cloth substrate and
Weaving knot, two conductive fiber beams are fixed in flexible cloth substrate by knot of weaving.
In order to achieve better technical results, further technical improvements include the quantity of the weaving knot is two
It is a, it is described to pass through two weaving knots respectively to binding and be fixed in the flexible cloth substrate, and each weaving knot with it is right
Bonded centre distance is greater than 1mm.
In order to achieve better technical results, further technical improvements include the conducting fiber is carbon, metal
Or conductive polymer material.
In order to achieve better technical results, further technical improvements include the flexible cloth substrate is not lead
Electric material can be fiber crops, mulberry silk, terylene, plain cloth, fine cloth, silk or flannelette.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of dock strain gauge of the invention；
Fig. 2 is another schematic diagram of dock strain gauge of the invention；
Fig. 3 is the structural schematic diagram of conductive fiber beam of the invention.
Specific embodiment
To further illustrate that each embodiment, the present invention are provided with attached drawing.These attached drawings are that the invention discloses one of content
Point, mainly to illustrate embodiment, and the associated description of specification can be cooperated to explain the operation principles of embodiment.Cooperation ginseng
These contents are examined, those skilled in the art will be understood that other may obtain embodiment and advantages of the present invention.
Please refer to Fig. 1 to Fig. 3.
Dock strain gauge of the invention comprising two conductive fiber beams 10, every conductive fiber beam 10 include
Shrinkage part 11 and the fluff structure 12 being electrically connected with shrinkage part 11；The fluff structure 12 of two conductive fiber beams 10 is connected to each other
And it is formed to binding 20, and the shrinkage part 11 of two conductive fiber beams 10 is electrically connected with external circuit respectively.
Specifically, the fluff structure 12 includes more conducting fibers 121, is existed between more conducting fibers 121
Multiple gaps；The conducting fiber 121 that two fluff structures 12 are connected to each other be formed by binding 20 include it is multiple conducting or
The electric channel not turned on.Under the action of stress, the quantity and phase of the conducting fiber 121 of two conductive fiber beams 10 docking
Gap between mutually is all varied.In order to improve the sensitivity to binding 20, the quantity of the more conducting fibers 121 is more
In 10.In addition, the conducting fiber 121 is carbon, metal or conductive polymer material.
Wherein, the shrinkage part 11 and the fluff structure 12 are integral type setting, and the setting of fluff structure 12 is collecting
The one end in portion 11；One end that shrinkage part 11 is not connect with fluff structure 12 is connect with outwardly extending conducting wire 30.
In the present embodiment, it is further preferable that dock strain gauge of the invention further include flexible cloth substrate 40 with
And weaving knot 50, two conductive fiber beams 40 are fixed in flexible cloth substrate 40 by knot 50 of weaving.
Wherein, the flexible cloth substrate 40 be electrically non-conductive material, can be fiber crops, mulberry silk, terylene, plain cloth, fine cloth,
Silk or flannelette.In addition, the quantity of the weaving knot 50 is two, it is described that two weaving knots 50 are passed through respectively to binding 20
It is fixed in the flexible cloth substrate 40, and each weaving knot 50 is greater than 1mm with to bonded centre distance.
Illustrate the working principle of dock strain gauge of the invention below:
Under the action of external force F1, the conducting that is formed between the conducting fiber 121 that two fluff structures 12 are connected to each other
The quantity of current channel increases with the increase of external force, so that the resistance value of strain gauge strongly reduces；
When external force F1 continues to increase to F2, formed between the conducting fiber 121 that two fluff structures 12 are connected to each other
The quantity in conducting electric current channel reach maximum value；As F2 is further increased, between the conducting fiber 121 of binding 20
Pore size is gradually reduced, and the speedup of the quantity in the conducting electric current channel formed between the conducting fiber 121 docked becomes
It obtains slowly, so that the resistance value of strain gauge slowly reduces；
When external force F2 continues to increase to F3, to binding 20 dock conducting fiber 121 between pore size and its
The quantity in the conducting electric current channel of formation has been saturation value；Even if external force is still increasing, but the electricity of strain gauge
Resistance has been no longer changed, and reaches saturation value；
When external force is withdrawn, the overall structure of strain gauge is restored to original state, and resistance sizes are restored to initial electricity
Resistance value；
Wherein, F1, F2, F3 are the external force value of different numerical value.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
The limitation to invention dock strain gauge range therefore cannot be interpreted as.It should be pointed out that for the general of this field
For logical technical staff, without departing from the inventive concept of the premise, various modifications and improvements can be made, these are belonged to
Protection scope of the present invention.
Claims (9)
1. a kind of dock strain gauge, it is characterised in that: including two conductive fiber beams, every conductive fiber beam includes receiving
Beam portion and the fluff structure being connect with shrinkage part；The fluff structure of two conductive fiber beams is connected to each other and is formed to binding,
And the shrinkage part of two conductive fiber beams is electrically connected with external circuit respectively.
2. dock strain gauge according to claim 1, it is characterised in that: the fluff structure includes more conductions
Fiber filament, there are multiple gaps between more conducting fibers；Two fluff structures are connected to each other to be formed by includes to binding
Partially electronically conductive fiber filament is in contact with each other to form conductive channel, and partially electronically conductive fiber filament fails to be in contact with each other to form conductive channel.
3. dock strain gauge according to claim 2, it is characterised in that: the quantity of the more conducting fibers
More than 10.
4. dock strain gauge according to claim 1, it is characterised in that: the shrinkage part and the fluff structure
It is arranged for integral type, and one end of shrinkage part is arranged in fluff structure.
5. dock strain gauge according to claim 4, it is characterised in that: described shrinkage part one end and fluff structure
Connection, the other end are connect with outwardly extending conducting wire.
6. dock strain gauge according to claim 1, it is characterised in that: further include flexible cloth substrate and spinning
Knot is knitted, two conductive fiber beams are fixed in flexible cloth substrate by knot of weaving.
7. dock strain gauge according to claim 6, it is characterised in that: the quantity of the weaving knot is two
It is a, it is described to pass through two weaving knots respectively to binding and be fixed in the flexible cloth substrate, and each weaving knot with it is right
Bonded centre distance is greater than 1mm.
8. dock strain gauge according to claim 2, it is characterised in that: the conducting fiber is carbon, metal
Or conductive polymer material.
9. dock strain gauge according to claim 6, it is characterised in that: the flexible cloth substrate is non-conductive
Material can be fiber crops, mulberry silk, terylene, plain cloth, fine cloth, silk or flannelette.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810400537.5A CN110411625B (en) | 2018-04-28 | 2018-04-28 | Butt-joint stress sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810400537.5A CN110411625B (en) | 2018-04-28 | 2018-04-28 | Butt-joint stress sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110411625A true CN110411625A (en) | 2019-11-05 |
| CN110411625B CN110411625B (en) | 2024-07-16 |
Family
ID=68357382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810400537.5A Active CN110411625B (en) | 2018-04-28 | 2018-04-28 | Butt-joint stress sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110411625B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112161738A (en) * | 2020-09-17 | 2021-01-01 | 五邑大学 | Air pressure sensor and manufacturing method thereof |
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| JP2006064663A (en) * | 2004-08-30 | 2006-03-09 | Keisoku Res Consultant:Kk | Carbon fiber bundle, method for detecting strain/stress of structure, and so forth |
| BE1017472A5 (en) * | 2007-02-20 | 2008-10-07 | Ct Scient Et Tech De L Ind Tex | Blend yarn for textile pressure sensor, has thin electrical wires in contact with two places spaced from one another to form resistive circuit in which electrical conductivity is changed during application of transversal pressure |
| CN106959071A (en) * | 2017-01-19 | 2017-07-18 | 吉林大学 | A kind of bionical strain perceptual structure and forming method thereof |
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| CN208026409U (en) * | 2018-04-28 | 2018-10-30 | 五邑大学 | A kind of dock strain gauge |
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2018
- 2018-04-28 CN CN201810400537.5A patent/CN110411625B/en active Active
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|---|---|---|---|---|
| JP2006064663A (en) * | 2004-08-30 | 2006-03-09 | Keisoku Res Consultant:Kk | Carbon fiber bundle, method for detecting strain/stress of structure, and so forth |
| BE1017472A5 (en) * | 2007-02-20 | 2008-10-07 | Ct Scient Et Tech De L Ind Tex | Blend yarn for textile pressure sensor, has thin electrical wires in contact with two places spaced from one another to form resistive circuit in which electrical conductivity is changed during application of transversal pressure |
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| CN110411625B (en) | 2024-07-16 |
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