CN206450179U - A kind of bionical strain perceptual structure - Google Patents
A kind of bionical strain perceptual structure Download PDFInfo
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- CN206450179U CN206450179U CN201720061707.2U CN201720061707U CN206450179U CN 206450179 U CN206450179 U CN 206450179U CN 201720061707 U CN201720061707 U CN 201720061707U CN 206450179 U CN206450179 U CN 206450179U
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Abstract
The utility model discloses a kind of bionical strain perceptual structure, it is that the conductive ink layer with strip parallel fracture band is formed with paper substrates, and conductive ink layer is fine and close hard and the loose softness of paper substrates.The forming method of bionical strain perceptual structure is one layer of conductive ink of printing in paper substrates, fine and close hard dry conductive ink layer is formed after conductive ink is dry, then paper substrates are bent, dry conductive ink layer is broken in bending, cause there are some cracks in dry conductive ink layer, some cracks constitute slit band biomimetic features, conductive ink layer of the conductive ink layer that the dries up formation containing strip slit band, and bionical strain perceptual structure is made；Strained after paper substrates stress, the exposure level between the sides of fracture in the strip crack of slit band biomimetic features changes, cause conductive ink layer resistance to change, thus have strain perceptional function.
Description
Technical field
The utility model is related to strain sensing field, more particularly to a kind of bionical strain perceptual structure and forming method thereof.
Specifically related to a kind of method that bionical strain perceptual structure is prepared by printing in paper substrates.Brushed on paper substrates surface
Conductive coating, forms strip parallel crack band after bend fracture, forms specific bionical fissured structure.When paper substrates stress
When straining afterwards, crack width changes, i.e. the exposure level change of sides of fracture, causes its overall electrical resistance to change, that is, produces pressure
Phenomenon is hindered, strain perceptional function is realized.The strain perceptual structure of preparation is a kind of biomimetic features, is inspired by scorpion vibration perception,
Bionical calligraphy or painting model derives from the seam receptor of scorpion vibration perception.
Background technology
With strain measurement, to perceive as purpose sensor be one of widest sensor of application in modern society.Such as
Strain transducer is applied to the measurement of power, force snesor, weighing sensor are used as after demarcation；Strain transducer and pressure,
Pressure is associated, as pressure sensor after being converted as pressure sensor or through area；Strain transducer is contacted with acceleration
It is used as acceleration transducer；Strain transducer is contacted as vibrating sensor etc. with mechanical oscillation.In actual use, correspondence
Become, strain gauge is not distinguished strictly typically.In addition, with the development that wearable device, mobile Internet are applied in recent years, it is soft
Property strain sensor extensive use in all kinds of consumption electronic products, medicine equipment, intelligent home device.Such as in Intelligent bracelet
On the flexible record for passing strain/stress element to wearer's activity；Flexible strain sensing piece is for patient respiration frequency, blood
The real-time monitoring of pressure and pulse and intelligent home device are to detection of various vibration signals etc..
As a class of sensor, strain/stress measurement perception device is all to be converted into the mechanical input amount such as power, strain
Electrical signal amount is exported, and common output form has resistance (resistance-type strain is perceived), voltage (piezoelectric strain perception) and electricity
Hold three kinds of (condenser type strain perception).With respect to other two kinds, resistance-type strain perceive original paper be most easily realize, it is most widely used
It is a kind of.
At present, the strain/stress induction element of resistance-type can be summarized as following 3 type：1st, traditional metal strain plate,
So that length after wire, sheet metal stress changes and causes resistance to occur small change；Either in recent years soft
Property material substrate on process it is mutual it is U-shaped connection formed sinuous snakelike shape strain structure, its length change is compared with strip of sheet
Metal is much larger.2nd, new material class strain induction element, with nano-metal particle (with noble metal nanos such as Nano Silver, nanogold
Particle is most commonly seen), CNT, graphene either in its three both mixtures be coated to for the new material of representative it is soft
Property substrate surface, or be embedded into as conductive unit in flexible substrates.After substrate stress deforms, these nano materials,
The distance between nano-particle changes, and the ride-through capability of electronics therebetween is affected, and causes overall electrical resistance to occur notable
Change.3rd, structure class, the structure of the various micro-nano sizes prepared is processed using ultraviolet photolithographic technology, (is such as added on contact surface
Work goes out pyramid structure, cylindrical structure etc.) after straining, contact resistance changes therewith；And using ZnO as the nanometer of representative
Electron transfer efficiency between the dendroid chi structure of line, the nano wire contacted with each other after its stress changes, i.e., whole
Body shows as the change of resistance.
But, also there is following deficiency in above-mentioned 3 type.The foil gauge of sheet type length change is because it is in strain
When, length change is smaller, and resistance variations are smaller, thus strain detecting scope very little, and its sensitivity coefficient (gauge factor,
GF it is) general not high, within 1.5~10；Metal nanoparticle or CNT, graphene etc. should for the new material of representative
Become sensor, because its substrate is mostly flexible material, range of strain is big, sensitivity coefficient is high, but noble metal nano particles, receive
The cost of rice carbon pipe or grapheme material is higher, material synthesis is complicated and synthesis technique stability is not good enough；Photoetching skill
Art processes the strain perceptual structure of micro-nano structure type, and its reliability of technology is preferable, but its manufacturing cost is high, preparation process
It is complicated；In addition, the growth of the dendritic structure of nano wire is random, parameter regulation and control difficulty is larger.
Scorpion class passes through the very long evolution of 1 years, and significant changes do not occur for its morphosis.Its body surface has evolved quick
Sharp crack receptor, very sensitive to mechanical oscillation signal, the vibration signal that scorpion comes by collecting through earth's surface transmission is carried out
Prey on prey and hide natural enemy.The crack receptor of scorpion is imitated, printing produces a kind of imitative scorpion crack sense in paper substrates
The bionical parallel fracture band structure of receiver, realizes and imitates strain (vibration) perceptional function of scorpion, can as it is a kind of economical,
The strain perceptual structure prepared on a large scale, it is significant.
The content of the invention
The purpose of this utility model is to provide a kind of bionical strain perceptual structure.
The utility model is inspired by scorpion crack susceptor structures, and it is structurally characterized in that in soft base material
Printing processes the rigid conductive layer containing a plurality of parallel fracture (slit band) in (paper substrates layer), be discontinuous hard layer with
The bionical Coupled Rigid-flexible structure of flexible layer.
The bionical strain perceptual structure of the utility model is formed with paper substrates with strip parallel fracture band
Conductive ink layer.
Forming method of the present utility model is one layer of conductive ink of printing in paper substrates, is formed after conductive ink is dry
Fine and close hard dry conductive ink layer, then bends paper substrates, and dry conductive ink layer is broken in bending, and dry up conduction
There are some parallel fractures in ink layer, some parallel fractures constitute slit band biomimetic features, and bionical strain perceptual structure is made.When
Strained after paper substrates stress, the exposure level between the sides of fracture in the strip crack of slit band biomimetic features becomes
Change, cause conductive ink layer resistance to change, thus have strain perceptional function.
Described conductive ink by carbon black as conductive material, cellulose as viscosity-controlling agent, allyl resin as viscous
Tie agent.
Inspired by scorpion crack receptor, crack receptor is parallel a plurality of crack structtire, and the scorpion on crack top
Daughter off-balancesheet bone is hard material, and bottom is hypodermis, and its material is softer.Inspired, obtained by scorpion crack susceptor structures
Strain perceptual structure is arrived, it forms fine and close hard dry lead to coat conductive ink in paper substrates after ink is dry
Electric ink layer, breaks and has no progeny, the conductive ink layer that dries up formation parallel fracture band.Top darker regions are dry conductive ink layer, are made
For hard material, it is attached in softer paper substrates, the bionical hard and soft coupling of discontinuous hard layer and flexible layer is formd with this
Close structure.When paper substrates stress deformation or after strain, sides of fracture engagement, the resistance of dry conductive ink layer becomes
Change.
Of the present utility model comprise the concrete steps that pastes mask plate in paper substrates, and mask plate is used to control conductive ink
Printed regions size and dimension, mask plate is repeatable if needed utilizes.Conductive ink is applied on mask plate with brush, covered
On diaphragm plate conductive ink is printed with prefabricated hollow region.Conductive ink is mainly by carbon black as conductive material, by fiber
Element is used as binding agent as viscosity-controlling agent, by allyl resin.After conductive ink is dry, mask plate is taken off, formd
Fine and close hard conductive layer in paper substrates.The cylinder for being R with radius is curved it, and conductive layer is broken to form to be felt with scorpion crack
The similar bionical fissured structure of receiver, with copper foil as electrode, is fixed to conductive ink layer two ends by conduction, forms complete
Bionical strain perceptual structure.
The principle of bionical strain perceptual structure be crack on rigid conductive layer after stress is strained, sides of fracture connects
Touch and change, so as to cause the resistance of whole perceptual structure to change.When the bionical strain structure stress of preparation cause it is recessed
During sigmoid, the crack on rigid conductive layer be combined with each other, and causes overall resistance to reduce；When stress elimination deformation-recovery,
The sides of fracture of engagement disconnects, and resistance becomes big, becomes original state again.After the bionical strain perceptual structure stress prepared, wall scroll crack
Width diminish.As can be seen that with the increase of strain, the width in crack reduces；After strain disappears, fracture width recovers.
The utility model its use carbon black for conductive material conductive ink brushing in paper substrates, form fine and close hard
Matter conductive layer；Conductive ink layer is broken disconnected with radius R cylinder curvature after ink is dry, parallel strip crackle band is formed.This
Rigid conductive ink layer containing strip parallel fracture band in utility model be coated on softness paper substrates on structure by
Scorpion perceives the inspiration of the crack receptor of vibration.It is structurally characterized in that prints on soft base material (paper substrates layer)
The rigid conductive layer containing a plurality of parallel fracture (slit band) is processed, is the bionical hard and soft coupling of discontinuous hard layer and flexible layer
Close structure.After being strained after paper substrates stress, the fracture width of conductive layer changes, i.e. sides of fracture contact condition changes therewith
Become, cause the resistance of whole conductive layer to change, reach the effect that strain is perceived.The utility model uses carbon black for conduction material
The conductive ink of material is brushed in paper substrates, and the more current strain transducer of its conductive material, base material is with low cost.This practicality
The vibration perception structure of new imitation scorpion crack receptor, the bionical strain perceptual structure sensitivity coefficient height of preparation, structure letter
It is single.Meanwhile, by the way of mask prints, prepared with simple, suitable high-volume printing is prepared, and prepare material for low-carbon ring
Protect material.
Brief description of the drawings
Fig. 1 is scorpion crack receptor piece cutting structure figure.
Fig. 2 is that the bionical strain perceptual structure in obtained paper substrates is inspired by scorpion crack receptor.
Fig. 3 is the attaching mask plate schematic diagram of bionical strain perceptual structure preparation process.
Fig. 4 prints schematic diagram for the mask of bionical strain perceptual structure preparation process.
Fig. 5 takes schematic diagram off for the mask plate of bionical strain perceptual structure preparation process from paper substrates
Fig. 6 is the dry conductive ink layer schematic diagram of bending of bionical strain perceptual structure preparation process.
Fig. 7 is the bionical strain structure schematic diagram after installation electrode.
Fig. 8 is that bionical strain perceives the structural representation that strain disappearance is unfolded.
Fig. 9 is that bionical strain perceives the structural representation compressed after strain.
Figure 10 is bionical strain perceptual structure electromicroscopic photograph.
Figure 11 is bionical strain perceptual structure crack electromicroscopic photograph.
Figure 12 is the change width photo in generation strain wall scroll crack after bionical strain perceptual structure stress.
Figure 13 is chord length-resistance change curves figure when bionical strain perceptual structure is strained.
Figure 14 is the sensitivity coefficient curve map of bionical strain perceptual structure.
Wherein (in Fig. 3)：1-paper substrates；2-mask plate；3-conductive ink；4-brush；5-conductive ink layer；
6-cylinder；7-wire；8-copper foil electrode；9-dry up conductive ink layer.
Embodiment
As shown in figure 1, according to the inspiration of scorpion crack receptor piece cutting structure, having obtained paper substrates 1 as shown in Figure 2
On bionical strain perceptual structure.It is the chitin shell that scorpion body surface is hard at arrow mark in Fig. 1, it is that scorpion is soft that it is lower
Soft hypodermis, 1~7 crack segmentation that hard chitin shell is marked in figure, forms parallel fracture band structure.Thus
Obtained bionical strain perceptual structure is inspired as shown in Fig. 2 upper strata is fine and close hard conductive layer, relatively soft papery is adhered to
In substrate 1.Meanwhile, there is a plurality of parallel fracture on conductive layer, form the strain perceptual structure of similar scorpion crack susceptor structures.
It is structurally characterized in that to print on soft base material (paper substrates layer) and processed containing a plurality of parallel fracture (slit band)
Rigid conductive layer, be the bionical Coupled Rigid-flexible structure of discontinuous hard layer and flexible layer.
As shown in fig. 7, the utility model is that the conductive ink layer 5 with strip slit band is formed with paper substrates 1.
The microstructure of bionical strain perceptual structure is as shown in Figure 10.
Mask plate 2 is attached at papery base by forming method of the present utility model as shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7
On the paper of bottom 1.The shape and size of the prefabricated hollow control brushing conductive layer of mask plate 2, the thickness of mask plate 2 are used to control to apply
The thickness of brush conductive layer；Meanwhile, mask plate 2 is repeatable if needed utilizes.Conductive ink 3 is coated on mask plate 2 with brush 4
In the paper substrates 1 of covering, enter line mask printing.Conductive ink 3 is adjusted by carbon black as conductive material, cellulose as viscosity
Agent, allyl resin form fine and close, the dry conductive ink layer 9 hard compared with paper substrates 1 as binding agent after it is dry.It is conductive
After the film forming of ink 3 is dry, mask plate 2 is taken off from paper substrates 1, bent with radius R cylinder 6, cause dry conductive ink
Water layer 9 is broken, and has some cracks thereon, forms the conductive ink layer 5 containing strip parallel fracture band.Now contain strip crack
The row of conductive ink layer 5 of band is into the slit band biomimetic features similar with scorpion crack receptor.With copper foil electrode 8 and wire 7
The two ends of the conductive ink layer 5 of strip slit band are pasted onto, bionical strain perceptual structure is formd.
After the stress of paper substrates 1 is deformed upon, the crack in the conductive ink layer 5 containing strip slit band thereon is wide
Degree changes, i.e. the contact area of sides of fracture changes.When the forced compression of paper substrates 1 occurs as shown in Figure 8 and Figure 9
After deformation, the sides of fracture engagement in the conductive ink layer 5 containing strip slit band, its resistance reduces, and thus achieves strain sense
Know.
When using using carbon black as conductive material, cellulose is allocated as viscosity-controlling agent, allyl resin as binding agent
Into conductive ink 3, brush in aforementioned manners in paper substrates 1, the thickness of mask plate is 0.2mm, and actionradius is 1mm circle
After post 6 is bent, the bionical strain perceptual structure electromicroscopic photograph of preparation is as shown in figure 5, the equispaced in crack is 290 μm or so.
As shown in figure 11, crack passes through conductive ink layer 9, is deep into always in paper substrates 1.When such as Fig. 8 and figure occur for paper substrates 1
After strain shown in 9, crack bandwidth changes, and sides of fracture be combined with each other and extruded.After bionical strain perceptual structure stress
The change width for occurring strain wall scroll crack is as shown in figure 12, it can be seen that fracture width substantially diminishes with strain increase, by
This is inferred to sides of fracture and is tightly combined, and overall electrical resistance diminishes.Chord length-resistance variations when bionical strain perceptual structure is strained
As shown in figure 13, the compression strain degree of paper substrates 1 is bigger, the resistance of the conductive ink layer 5 containing strip slit band for curve
It is smaller.As shown in figure 14, its sensitivity coefficient can carry out sectional linear fitting to the sensitivity coefficient curve of bionical strain perceptual structure, most
Big sensitivity coefficient can reach -647, and wherein negative sign represents the sensitivity coefficient of resistance change hour after being compressed.
Claims (1)
1. a kind of bionical strain perceptual structure, it is characterised in that：It is to be formed with paper substrates with strip parallel fracture band
Conductive ink layer, conductive ink layer is fine and close hard and the loose softness of paper substrates.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106959071A (en) * | 2017-01-19 | 2017-07-18 | 吉林大学 | A kind of bionical strain perceptual structure and forming method thereof |
| CN109781244A (en) * | 2019-02-25 | 2019-05-21 | 吉林大学 | A kind of cutting tool for CNC machine vibration signal detection system and detection method |
| CN111351773A (en) * | 2018-12-21 | 2020-06-30 | 中国科学院苏州纳米技术与纳米仿生研究所 | Gas sensor based on swelling dynamic response and preparation method thereof |
-
2017
- 2017-01-19 CN CN201720061707.2U patent/CN206450179U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106959071A (en) * | 2017-01-19 | 2017-07-18 | 吉林大学 | A kind of bionical strain perceptual structure and forming method thereof |
| CN106959071B (en) * | 2017-01-19 | 2019-04-26 | 吉林大学 | A kind of bionical strain perceptual structure and forming method thereof |
| CN111351773A (en) * | 2018-12-21 | 2020-06-30 | 中国科学院苏州纳米技术与纳米仿生研究所 | Gas sensor based on swelling dynamic response and preparation method thereof |
| CN109781244A (en) * | 2019-02-25 | 2019-05-21 | 吉林大学 | A kind of cutting tool for CNC machine vibration signal detection system and detection method |
| CN109781244B (en) * | 2019-02-25 | 2020-06-02 | 吉林大学 | System and method for detecting vibration signal of numerical control machine tool cutter |
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