CN103776567B - Pressure sensitive cable based on franklinic electricity - Google Patents
Pressure sensitive cable based on franklinic electricity Download PDFInfo
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- CN103776567B CN103776567B CN201210402293.7A CN201210402293A CN103776567B CN 103776567 B CN103776567 B CN 103776567B CN 201210402293 A CN201210402293 A CN 201210402293A CN 103776567 B CN103776567 B CN 103776567B
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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
- G01L1/16—Measuring force or stress, in general using properties of piezoelectric devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N1/00—Electrostatic generators or motors using a solid moving electrostatic charge carrier
- H02N1/04—Friction generators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/10—Contact cables, i.e. having conductors which may be brought into contact by distortion of the cable
- H01B7/104—Contact cables, i.e. having conductors which may be brought into contact by distortion of the cable responsive to pressure
- H01B7/106—Contact cables, i.e. having conductors which may be brought into contact by distortion of the cable responsive to pressure comprising concentric conductors
Abstract
The invention provides a kind of pressure sensitive cable based on franklinic electricity, this pressure sensitive cable includes the first electrode cores, cavity, the first polymer insulation layer and the second electrode lay sequentially coaxially arranged；It is provided with the second polymer spacer the most in the cavities；Described first electrode cores and the second electrode lay are friction generator voltage and current output electrode.The present invention, by rubbing between friction between polymer and polymer or polymer and metal, produces the voltage signal being directly proportional to the pressure being applied on pressure sensitive cable.
Description
Technical field
The present invention relates to a kind of pressure sensitive cable, especially relate to a kind of pressure sensitive cable based on franklinic electricity.
Background technology
Along with modern life level improves constantly, rhythm of life is constantly accelerated, and occurs in that the self power generation equipment that application is convenient, low to condition depended degree.Existing self power generation equipment generally utilizes the piezoelectric property of material.Such as 2006, georgia ,U.S.A Institute of Technology professor Wang Zhonglin etc. successfully converted mechanical energy into electric energy in the range of nanoscale, developed electromotor-nano generator minimum in the world.The ultimate principle of nano generator is: when dynamic tensile under nano wire (NWs) is in external force, generates piezoelectricity electromotive force in nano wire, and corresponding transient current flows at two ends to balance fermi level.
Conventional piezoelectric sensor is flat thin membranous type, in recent years with application demand, occurs in that piezoelectric cable.Piezoelectric cable uses coaxial design, when piezoelectric cable is compressed or stretches, it may occur that piezoelectric effect, thus produces electric charge or the voltage signal being proportional to pressure, to provide running voltage.Piezoelectric transducer be utilize piezoelectric stress after the sensor made of piezoelectric effect that produces, be widely used for the various fields such as acoustics, medical treatment, industry, traffic, security protection, the live and work mode of people be just altered in steps, becoming the trend of social development.
Mutually rubbing between object and object, will make negative electricity on side's band, the opposing party becomes positively charged, owing to electricity fricative between object is franklinic electricity.Franklinic electricity is one of modal phenomenon of nature, but is because being difficult to Collection utilization and being left in the basket.If able to franklinic electricity be applied in pressure sensitive cable, bring to the life of people more convenient.
Summary of the invention
The technical problem to be solved is to provide a kind of pressure sensitive cable based on franklinic electricity, under stress condition, by rubbing between friction between polymer and polymer or polymer and metal, produce the voltage signal that is directly proportional to the pressure being applied on pressure sensitive cable, have that production technology is simple, highly sensitive, fast response time, the feature of length in service life.
In order to solve above-mentioned technical problem, the first technical scheme that the present invention uses is: a kind of pressure sensitive cable based on franklinic electricity, this pressure sensitive cable includes the first electrode cores, cavity, the first polymer insulation layer and the second electrode lay sequentially coaxially arranged；It is provided with the second polymer spacer the most in the cavities；Described first electrode cores and the second electrode lay are friction generator voltage and current output electrode.
Aforesaid pressure sensitive cable based on franklinic electricity, described second polymer spacer is the second polymer insulation layer, is arranged on the first electrode cores surface.
Aforesaid pressure sensitive cable based on franklinic electricity, the thickness of described second polymer insulation layer is 300nm to 1 μm.
nullAforesaid pressure sensitive cable based on franklinic electricity，Described first polymer insulation layer material therefor is selected from Kapton、Aniline-formaldehyde resin thin film、Polyformaldehyde thin film、Ethyl cellulose film、Polyamide film、Melamino-formaldehyde thin film、Polyethylene Glycol succinate thin film、Cellulose membrane、Cellulose acetate film、10PE27 thin film、Polydiallyl phthalate thin film、Fiber (regeneration) sponge films、Elastic polyurethane body thin film、Styrene-acrylonitrile copolymer copolymer film、Styrene-butadiene-copolymer thin film、Staple fibre thin film、Polymethyl methacrylate film、Polyvinyl alcohol film、Polyisobutylene thin film、Pet film、Polyvinyl butyral film、Formaldehyde-phenol condensation polymer thin film、Neoprene thin film、Butadiene-propylene copolymer thin film、Natural rubber films、Polyacrylonitrile thin film、Any one in acrylonitrile vinyl chloride copolymer thin film.
nullAforesaid pressure sensitive cable based on franklinic electricity，Described second polymer insulation layer material therefor and the first polymer insulation layer are different，Selected from Kapton、Aniline-formaldehyde resin thin film、Polyformaldehyde thin film、Ethyl cellulose film、Polyamide film、Melamino-formaldehyde thin film、Polyethylene Glycol succinate thin film、Cellulose membrane、Cellulose acetate film、10PE27 thin film、Polydiallyl phthalate thin film、Fiber (regeneration) sponge films、Elastic polyurethane body thin film、Styrene-acrylonitrile copolymer copolymer film、Styrene-butadiene-copolymer thin film、Staple fibre thin film、Polymethyl methacrylate film、Polyvinyl alcohol film、Polyisobutylene thin film、Pet film、Polyvinyl butyral film、Formaldehyde-phenol condensation polymer thin film、Neoprene thin film、Butadiene-propylene copolymer thin film、Natural rubber films、Polyacrylonitrile thin film、Any one in acrylonitrile vinyl chloride copolymer thin film.
Aforesaid pressure sensitive cable based on franklinic electricity, the nano concavo-convex structure of nanoscale extremely micron-sized micro-nano concaveconvex structure, preferably height of projection 50nm-300nm it is provided with at least one face in described first polymer insulation layer and the second polymer insulation layer apparent surface.
Aforesaid pressure sensitive cable based on franklinic electricity, the polymer dot interlace that described second polymer spacer is provided in cavity, described dot interlace height of projection is 100nm-1 μm.
Aforesaid pressure sensitive cable based on franklinic electricity, in unit are, dot interlace quantity is 2 × 104Individual/m2To 2 × 107Individual/m2。
Aforesaid pressure sensitive cable based on franklinic electricity, described dot interlace material therefor is polymer, and different from the first polymer insulation layer material therefor.
nullAforesaid pressure sensitive cable based on franklinic electricity，Described dot interlace material therefor is selected from Kapton、Aniline-formaldehyde resin thin film、Polyformaldehyde thin film、Ethyl cellulose film、Polyamide film、Melamino-formaldehyde thin film、Polyethylene Glycol succinate thin film、Cellulose membrane、Cellulose acetate film、10PE27 thin film、Polydiallyl phthalate thin film、Fiber (regeneration) sponge films、Elastic polyurethane body thin film、Styrene-acrylonitrile copolymer copolymer film、Styrene-butadiene-copolymer thin film、Staple fibre thin film、Polymethyl methacrylate film、Polyvinyl alcohol film、Polyisobutylene thin film、Pet film、Polyvinyl butyral film、Formaldehyde-phenol condensation polymer thin film、Neoprene thin film、Butadiene-propylene copolymer thin film、Natural rubber films、Polyacrylonitrile thin film、Any one in acrylonitrile vinyl chloride copolymer thin film.
Aforesaid pressure sensitive cable based on franklinic electricity, described dot interlace is arranged on the first electrode cores surface.
Aforesaid pressure sensitive cable based on franklinic electricity, described second polymer spacer is wound around the polymer line on the first electrode cores surface, and the diameter of preferred described polymer line is 500nm to 2 μm.
Aforesaid pressure sensitive cable based on franklinic electricity, described polymer line winding spacing on the first electrode cores surface is 0.1 μm to 5 μm (preferably 1 μm is to 5 μm).
Aforesaid pressure sensitive cable based on franklinic electricity, described polymer line material therefor and the first polymer insulation layer are different.
nullAforesaid pressure sensitive cable based on franklinic electricity，Described polymer line material therefor is selected from Kapton、Aniline-formaldehyde resin thin film、Polyformaldehyde thin film、Ethyl cellulose film、Polyamide film、Melamino-formaldehyde thin film、Polyethylene Glycol succinate thin film、Cellulose membrane、Cellulose acetate film、10PE27 thin film、Polydiallyl phthalate thin film、Fiber (regeneration) sponge films、Elastic polyurethane body thin film、Styrene-acrylonitrile copolymer copolymer film、Styrene-butadiene-copolymer thin film、Staple fibre thin film、Polymethyl methacrylate film、Polyvinyl alcohol film、Polyisobutylene thin film、Pet film、Polyvinyl butyral film、Formaldehyde-phenol condensation polymer thin film、Neoprene thin film、Butadiene-propylene copolymer thin film、Natural rubber films、Polyacrylonitrile thin film、Any one in acrylonitrile vinyl chloride copolymer thin film.
Aforesaid pressure sensitive cable based on franklinic electricity, described first electrode cores is single structure.
Aforesaid pressure sensitive cable based on franklinic electricity, described first electrode cores is the multicore structure be arrangeding in parallel.
Aforesaid pressure sensitive cable based on franklinic electricity, described first electrode cores is wound around the multicore structure arranged.
Aforesaid pressure sensitive cable based on franklinic electricity, described first electrode cores material therefor is metal or alloy, and wherein metal is Au Ag Pt Pd, aluminum, nickel, copper, titanium, chromium, stannum, ferrum, manganese, molybdenum, tungsten or vanadium；Alloy is aluminium alloy, titanium alloy, magnesium alloy, beryllium alloy, copper alloy, kirsite, manganese alloy, nickel alloy, metal, ashbury metal, cadmium alloy, bismuth alloy, indium alloy, gallium alloy, tungsten alloy, molybdenum alloy, niobium alloy or tantalum alloy.
Aforesaid pressure sensitive cable based on franklinic electricity, described first electrode cores material therefor is that surface is provided with the polymer of conductive layer, glass or fiber.
Aforesaid pressure sensitive cable based on franklinic electricity, described conductive layer is indium tin oxide film, graphene film, nano silver wire film or metal film, and metal material used by wherein said metal film is Au Ag Pt Pd, aluminum, nickel, copper, titanium, chromium, stannum, ferrum, manganese, molybdenum, tungsten or vanadium.
Aforesaid pressure sensitive cable based on franklinic electricity, described the second electrode lay material therefor is selected from indium tin oxide, Graphene electrodes, nano silver wire film, and metal or alloy, wherein metal is Au Ag Pt Pd, aluminum, nickel, copper, titanium, chromium, stannum, ferrum, manganese, molybdenum, tungsten or vanadium；Alloy is aluminium alloy, titanium alloy, magnesium alloy, beryllium alloy, copper alloy, kirsite, manganese alloy, nickel alloy, metal, ashbury metal, cadmium alloy, bismuth alloy, indium alloy, gallium alloy, tungsten alloy, molybdenum alloy, niobium alloy or tantalum alloy.
When present invention pressure sensitive based on franklinic electricity cable is under pressure, produce electric charge or the voltage signal being proportional to pressure.Present invention pressure sensitive based on franklinic electricity cable has that production technology is simple, highly sensitive, fast response time, the feature of length in service life.
Accompanying drawing explanation
Fig. 1 is the generalized section of the pressure sensitive cable based on franklinic electricity of one detailed description of the invention of the present invention；
Fig. 2 is the structural representation of Fig. 1 pressure sensitive cable；
Fig. 3 is the generalized section of the pressure sensitive cable based on franklinic electricity of another embodiment of the present invention；
Fig. 4 is the structural representation of Fig. 3 pressure sensitive cable；
Fig. 5 is the generalized section of the pressure sensitive cable based on franklinic electricity of another detailed description of the invention of the present invention；
Fig. 6 is the structural representation of Fig. 5 pressure sensitive cable；
Fig. 7 is the generalized section of the pressure sensitive cable based on franklinic electricity of another detailed description of the invention of the present invention；
Fig. 8 is the structural representation of Fig. 7 pressure sensitive cable.
Detailed description of the invention
For being fully understood by the purpose of the present invention, feature and effect, by following specific embodiment, the present invention is elaborated.
Present invention pressure sensitive based on franklinic electricity cable, when cable is under pressure, produce electric charge or the voltage signal being proportional to pressure, therefore, it is possible to be used as traffic axial pressure sensor to measure speed and car weight, existence/occupation rate is detected, as contact microphone monitoring vital signs and perimeter security as cable switch.
The pressure sensitive cable based on franklinic electricity of a kind of detailed description of the invention, this pressure sensitive cable includes the first electrode cores, cavity, the first polymer insulation layer and the second electrode lay sequentially coaxially arranged；Wherein, when described pressure sensitive cable stretches naturally, the first polymer insulation layer is spaced apart by cavity with the first electrode cores；During the bending of described pressure sensitive cable stress, the first polymer insulation layer contacts friction with the first electrode cores；Described first electrode cores and the second electrode lay are friction generator voltage and current output electrode.
When the stress of pressure sensitive cable based on franklinic electricity bends, first polymer insulation layer contacts friction and produces electrostatic charge with the first electrode cores, the generation of electrostatic charge can make the electric capacity between the first electrode cores and the second electrode lay change, thus causes electric potential difference occur between the first electrode cores and the second electrode lay.Due to the existence of electric potential difference between the first electrode cores and the second electrode lay, free electron will be flowed to, by the side that electromotive force is low, the side that electromotive force is high by external circuit, thus forms electric current in external circuit.When pressure sensitive cable based on franklinic electricity returns to naturalness, at this moment the built-in potential being formed between the first electrode cores and the second electrode lay disappears, to again produce reverse electric potential difference between the most Balanced first electrode cores and the second electrode lay, then free electron forms reverse current by external circuit.By repeatedly rubbing and recovering, it is possible to form periodic ac signal in external circuit.
As illustrated in fig. 1 and 2, the pressure sensitive cable 1 based on franklinic electricity of a kind of detailed description of the invention, this pressure sensitive cable includes the first electrode cores 11, cavity the 12, first polymer insulation layer 13 and the second electrode lay 14 sequentially coaxially arranged；In cavity 12, wherein it is provided with the second polymer spacer (not shown)；Described first electrode cores 11 and the second electrode lay 14 are friction generator voltage and current output electrode.
nullPressure sensitive cable 1 based on franklinic electricity as illustrated in fig. 1 and 2，First polymer insulation layer 13 material therefor can be selected from Kapton、Aniline-formaldehyde resin thin film、Polyformaldehyde thin film、Ethyl cellulose film、Polyamide film、Melamino-formaldehyde thin film、Polyethylene Glycol succinate thin film、Cellulose membrane、Cellulose acetate film、10PE27 thin film、Polydiallyl phthalate thin film、Fiber (regeneration) sponge films、Elastic polyurethane body thin film、Styrene-acrylonitrile copolymer copolymer film、Styrene-butadiene-copolymer thin film、Staple fibre thin film、Polymethyl methacrylate film、Polyvinyl alcohol film、Polyisobutylene thin film、Pet film、Polyvinyl butyral film、Formaldehyde-phenol condensation polymer thin film、Neoprene thin film、Butadiene-propylene copolymer thin film、Natural rubber films、Polyacrylonitrile thin film、Any one in acrylonitrile vinyl chloride copolymer thin film.
The second electrode lay 14 material therefor is selected from indium tin oxide, Graphene electrodes, nano silver wire film, and metal or alloy, and wherein metal is Au Ag Pt Pd, aluminum, nickel, copper, titanium, chromium, stannum, ferrum, manganese, molybdenum, tungsten or vanadium；Alloy is aluminium alloy, titanium alloy, magnesium alloy, beryllium alloy, copper alloy, kirsite, manganese alloy, nickel alloy, metal, ashbury metal, cadmium alloy, bismuth alloy, indium alloy, gallium alloy, tungsten alloy, molybdenum alloy, niobium alloy or tantalum alloy.
In pressure sensitive cable 1 as illustrated in fig. 1 and 2, the first electrode cores 11 is single structure.First electrode cores 11 material therefor can be metal or alloy, and wherein metal can be but not limited to Au Ag Pt Pd, aluminum, nickel, copper, titanium, chromium, stannum, ferrum, manganese, molybdenum, tungsten or vanadium；Alloy can be but not limited to aluminium alloy, titanium alloy, magnesium alloy, beryllium alloy, copper alloy, kirsite, manganese alloy, nickel alloy, metal, ashbury metal, cadmium alloy, bismuth alloy, indium alloy, gallium alloy, tungsten alloy, molybdenum alloy, niobium alloy or tantalum alloy.
In one preferred embodiment, the first electrode cores 11 material therefor can also is that surface is provided with the polymer of conductive layer, glass or fiber.Polymer described here and the first polymer insulation layer material therefor are identical.Described glass refers to various glass material based on silicon dioxide, includes different purposes and the glass of function.Described fiber includes various Plant fiber, animal fiber, staple fibre, fabric fibre, cellulose fibre, such as cotton, kapok, Caulis et Folium Lini, Boehmeria, Corchorus olitorius L., bamboo fibre, Folium Agaves Sisalanae, abaca, sheep's wool, cashmere, Pilus Cameli, the rabbit hair, mohair yarn, silkworm silk, viscose fiber, acetate fiber, CUP, polyester fiber (terylene), Fypro (chinlon or nylon), vinal (polyvinyl), polyacrylonitrile fibre (acrylon), polypropylene fibre (polypropylene), polyvinyl chloride fibre (polyvinyl chloride fibre) etc..
Conductive layer can be that the method using conventional magnetron sputtering or evaporation is arranged on the indium tin oxide film on polymer, glass or fiber surface, graphene film, nano silver wire film or metal film, and used by wherein said metal film, metal material can be but not limited to Au Ag Pt Pd, aluminum, nickel, copper, titanium, chromium, stannum, ferrum, manganese, molybdenum, tungsten or vanadium.
As shown in Figures 3 and 4, in a preferred embodiment, pressure sensitive cable 2 includes the first electrode cores 21, cavity the 22, first polymer insulation layer 23 and the second electrode lay 24 sequentially coaxially arranged, and wherein the first electrode cores 21 is the multicore structure be arrangeding in parallel.First electrode cores the 21, first polymer insulation layer 23 is identical with pressure sensitive cable shown in Fig. 11 material therefor with the second electrode lay 24 material therefor, repeats no more here.In another preferred embodiment, the first electrode cores 21 can also is that and is wound around the multicore structure arranged.
Each electrode cores of the first electrode cores 21 can select different materials, such that it is able to export different signals, it is also possible to additional different function.Such as plating on glass optical fiber, then this optical fiber both can transmit optical signalling can also export electrical signal.
As it can be seen in figures 5 and 6, in a preferred embodiment, pressure sensitive cable 3 includes the first electrode cores 31, cavity the 32, first polymer insulation layer 33 and the second electrode lay 34 sequentially coaxially arranged, and is provided with dot interlace 35 in its cavity 32.Preferably, dot interlace height of projection is 100 nanometer-1 micron, is arranged on the first electrode cores 31 surface, and in unit are, dot interlace quantity is 2 × 104Individual/m2To 2 × 107Individual/m2.For example with conventional commercial conducting resinl, dot interlace 35 is bonded on the first electrode cores 31 surface.First electrode cores the 31, first polymer insulation layer 33 is identical with pressure sensitive cable shown in Fig. 11 material therefor with the second electrode lay 34 material therefor, repeats no more here.
Described dot interlace 35 material therefor is preferably polymer, and different from the first polymer insulation layer 33 material therefor.nullIt is Kapton that described dot interlace material therefor can be selected from, but not limited to,、Aniline-formaldehyde resin thin film、Polyformaldehyde thin film、Ethyl cellulose film、Polyamide film、Melamino-formaldehyde thin film、Polyethylene Glycol succinate thin film、Cellulose membrane、Cellulose acetate film、10PE27 thin film、Polydiallyl phthalate thin film、Fiber (regeneration) sponge films、Elastic polyurethane body thin film、Styrene-acrylonitrile copolymer copolymer film、Styrene-butadiene-copolymer thin film、Staple fibre thin film、Polymethyl methacrylate film、Polyvinyl alcohol film、Polyisobutylene thin film、Pet film、Polyvinyl butyral film、Formaldehyde-phenol condensation polymer thin film、Neoprene thin film、Butadiene-propylene copolymer thin film、Natural rubber films、Polyacrylonitrile thin film、Any one in acrylonitrile vinyl chloride copolymer thin film.
In another preferred embodiment, pressure sensitive cable includes the first electrode cores, cavity, the first polymer insulation layer and the second electrode lay sequentially coaxially arranged, being provided with in its cavity and be wrapped in the polymer line on the first electrode cores surface with a determining deviation, the most described polymer line winding spacing on the first electrode cores surface is that 0.1 μm is to 5 μm.The diameter of usual described polymer line is 500nm to 2 μm.
Polymer line material therefor and the first polymer insulation layer are different.nullPolymer line material therefor is selected from Kapton、Aniline-formaldehyde resin thin film、Polyformaldehyde thin film、Ethyl cellulose film、Polyamide film、Melamino-formaldehyde thin film、Polyethylene Glycol succinate thin film、Cellulose membrane、Cellulose acetate film、10PE27 thin film、Polydiallyl phthalate thin film、Fiber (regeneration) sponge films、Elastic polyurethane body thin film、Styrene-acrylonitrile copolymer copolymer film、Styrene-butadiene-copolymer thin film、Staple fibre thin film、Polymethyl methacrylate film、Polyvinyl alcohol film、Polyisobutylene thin film、Pet film、Polyvinyl butyral film、Formaldehyde-phenol condensation polymer thin film、Neoprene thin film、Butadiene-propylene copolymer thin film、Natural rubber films、Polyacrylonitrile thin film、Any one in acrylonitrile vinyl chloride copolymer thin film.
The setting of dot interlace 35 and polymer line enables to pressure sensitive cable when natural extended configuration, is effectively isolated the first polymeric layer and the first electrode cores.Additionally select the polymer effective with the first polymeric layer triboelectrification, contribute to the triboelectrification of pressure sensitive cable.
In another preferred embodiment, pressure sensitive cable includes the first electrode cores, cavity, the first polymer insulation layer and the second electrode lay sequentially coaxially arranged, the nano concavo-convex structure (not shown) of nanoscale extremely micron-sized micro-nano concaveconvex structure, preferably height of projection 50nm-300nm it is provided with on the surface of the first polymer insulation layer opposite first pole core.
The roughness of friction surface can produce impact to the output of voltage and current, and i.e. in unit are, the thickness of the size of dot interlace, quantity and polymer and the spacing of winding all can produce impact to the output character of electric energy.When using dot interlace as the second polymer spacer in the present invention, preferred dot interlace height of projection is 100 nanometer-1 micron, and in unit are, dot interlace quantity is 2 × 104Individual/m2To 2 × 107Individual/m2.The high cost when dot interlace height of projection (particle diameter) is less than 100 nanometer, when dot interlace height of projection (particle diameter) is more than 1 micron, voltage, current signal can reduce rapidly.In the present invention use polymer line as the second polymer spacer time, the diameter of preferred polymer line is 500nm to 2 μm, the winding spacing of polymer line be 0.1 μm to 5 μm, more preferably 1 μm is to 5 μm.When polymer linear diameter is more than 2 μm, and when being wound around spacing more than 5 μm, voltage, current signal can reduce rapidly.
As shown in FIG. 7 and 8, the pressure sensitive cable 4 based on franklinic electricity of a kind of detailed description of the invention, this pressure sensitive cable includes the first electrode cores 41, cavity the 42, first polymer insulation layer 43 and the second electrode lay 44 sequentially coaxially arranged.This pressure sensitive cable 4 farther includes the second polymer insulation layer 45, is arranged between the first electrode cores 41 and cavity 42；Wherein, when described pressure sensitive cable 4 stretches naturally, the first polymer insulation layer 43 is spaced apart by cavity 42 with the second polymer insulation layer 45；During the bending of described pressure sensitive cable 4 stress, the first polymer insulation layer 43 contacts friction with the second polymer insulation layer 45.Described first electrode cores 41 and the second electrode lay 44 are friction generator voltage and current output electrode.
First electrode cores the 41, first polymer insulation layer 43 is identical with pressure sensitive cable shown in Fig. 11 material therefor with the second electrode lay 44 material therefor, repeats no more here.
The thickness of described second polymer insulation layer is 300nm to 1 μm.nullDescribed second polymer insulation layer material therefor and the first polymer insulation layer are different，Kapton can be selected from、Aniline-formaldehyde resin thin film、Polyformaldehyde thin film、Ethyl cellulose film、Polyamide film、Melamino-formaldehyde thin film、Polyethylene Glycol succinate thin film、Cellulose membrane、Cellulose acetate film、10PE27 thin film、Polydiallyl phthalate thin film、Fiber (regeneration) sponge films、Elastic polyurethane body thin film、Styrene-acrylonitrile copolymer copolymer film、Styrene-butadiene-copolymer thin film、Staple fibre thin film、Polymethyl methacrylate film、Polyvinyl alcohol film、Polyisobutylene thin film、Pet film、Polyvinyl butyral film、Formaldehyde-phenol condensation polymer thin film、Neoprene thin film、Butadiene-propylene copolymer thin film、Natural rubber films、Polyacrylonitrile thin film、Any one in acrylonitrile vinyl chloride copolymer thin film.
In one preferred embodiment, the nano concavo-convex structure (not shown) of nanoscale extremely micron-sized micro-nano concaveconvex structure, preferably height of projection 50nm-300nm it is provided with at least one face in first polymer insulation layer 43 and the second polymer insulation layer 45 apparent surface.
Micro-nano concaveconvex structure can use multiple method to be prepared, such as with having the silicon template of ad hoc rule bulge-structure to suppress, with the metal with roughness of sand papering as template and additive method.A kind of preparation method the following detailed description of micro-nano concaveconvex structure.
S1 makes silicon template.The method of silicon chip photoetching is made on surface the figure of rule.Carry out the technique anisotropic etching of the silicon chip wet etching of figure, the rectangular pyramid array structure of spill can be carved, or can also can carve the cubic array structure of spill with the technique isotropic etching of dry etching.Template acetone and isopropanol after carving well clean up, and the most all of template all carries out the process of surface silanization in the atmosphere of trim,ethylchlorosilane, and the silicon template handled well is stand-by.
S2 makes the polymer membrane with micro-nano relief structured surface.First polymer paste is coated on silicon template surface, vacuum outgas, by the mode of rotary coating, mixture unnecessary for silicon chip surface is removed, form the polymeric liquid film of thin layer.Whole template is solidified, then peels off, be there is the polymeric film of specific microstructure array uniformly.
In actual applications, first electrode cores and the second electrode lay of pressure sensitive cable based on franklinic electricity are connected respectively on detector, when cable is under pressure, first electrode cores and the second electrode lay produce the electric field being proportional to pressure, so just can measure, by detector, the voltage signal being proportional to pressure.The detector that the present invention can apply is conventional commercial detector.
According to above-mentioned principle, present invention pressure sensitive based on franklinic electricity cable can serve as traffic axle sensor, detects existence/occupation rate as pressure sensitive cable switch, as contact microphone monitoring vital signs and perimeter security.It is used for example as traffic axle sensor, when tire is through cable, produce the voltage signal being directly proportional to the pressure being applied on sensor, and the output cycle is identical with the time that tire stops on a sensor, whenever a tire is through sensor, and sensor can produce a new electronic impulse.Installing two sensors on track, tire starts electronic clock through first sensor, and tire starts electronic clock through second sensor and stops clock, has obtained the time cycle；Distance between known sensor, has thus obtained speed.
Illustrate the enforcement of the method for the present invention below by specific embodiment, it will be apparent to a skilled person that this is understood not to the restriction to scope of the invention as claimed.
Embodiment 1
Pressure sensitive cable 3 as shown in Figure 5, a diameter of 1.6mm.Selecting purity 99.5%, the industrial aluminum of diameter 1.5mm is as the first electrode cores 31.
The polymethyl methacrylate pipe of commercial diameter 1.6mm is used as the first polymer insulation layer 33.The polyethylene terephthalate granule of commercial diameter 200nm is used as dot interlace 35, uses conducting resinl by polyethylene terephthalate granule according to 2 × 107Individual/m2Being bonded on the surface of the first electrode cores 31, then coaxial for the first electrode cores 31 is put into polymethyl methacrylate pipe, form cavity 32, then edge seals with common rubberized fabric adhere.
By on indium tin oxide (ITO) magnetic control sputtering plating to polymethyl methacrylate tube outer surface, form the second electrode lay 34, obtain pressure sensitive cable 1#.
The test of voltage and current is respectively adopted stanford company of U.S. SR560 voltage preamplifier and SR570 galvo-preamplifier.Wherein during test voltage, due to electric organ export-restriction, use the mode of multiple same resistance dividing potential drop, survey the voltage of one of them resistance, be finally multiplied by resistance number and obtain the output voltage that electromotor is total.
The motor using rectilinear oscillation (deformation of 0.33Hz and 0.13%) makes bending and the release of pressure sensitive cable 1# generating period, and the maximum output voltage of pressure sensitive cable 1# and current signal have respectively reached 30V and 10 μ A.
Embodiment 2
Pressure sensitive cable 3 as shown in Figure 5, a diameter of 1.6mm.Selecting purity 99.5%, the industrial aluminum of diameter 1.5mm is as the first electrode cores 31.
The polymethyl methacrylate pipe of commercial diameter 1.6mm is used as the first polymer insulation layer 33.The polyethylene terephthalate granule of commercial diameter 1 μm is used as dot interlace 35, uses conducting resinl by polyethylene terephthalate granule according to 2 × 105Individual/m2Being bonded on the surface of the first electrode cores 31, then coaxial for the first electrode cores 31 is put into polymethyl methacrylate pipe, form cavity 32, then edge seals with common rubberized fabric adhere.
By on indium tin oxide (ITO) magnetic control sputtering plating to polymethyl methacrylate tube outer surface, form the second electrode lay 34, obtain pressure sensitive cable 2#.
Using method same as in Example 1, the maximum output voltage and the current signal that record sample 2# have respectively reached 12V and 3 μ A.
Embodiment 3
The present embodiment structure is substantially the same manner as Example 1, and difference is, the optical fiber selecting the surface of three diameter 1mm to be coated with Aurum metallicum be arranged in parallel, as the first electrode cores.Use conducting resinl by polyethylene terephthalate granule according to 2 × 104Individual/m2Being bonded on the surface of the first electrode cores 31, the preparation method then using other steps same as in Example 1 obtains pressure sensitive cable 3#.
Using method same as in Example 1, the maximum output voltage and the current signal that record sample 3# have respectively reached 18V and 6 μ A.
This induction cable 3# can conducting optical signal.
Embodiment 4
The present embodiment pressure sensitive cable size is 1.6mm.Selecting purity 99.5%, the standard copper of diameter 1.5mm is as the first electrode cores.
The polyimide tube of commercial diameter 1.6mm is used as the first polymer insulation layer.The polyethylene terephthalate line of commercial diameter 500nm, it is that 1 μm is wrapped on the first electrode cores surface by polyethylene terephthalate line with spacing, then by the polyimide tube put into coaxial for the first electrode cores, forming cavity, then edge seals with common rubberized fabric adhere.
By on indium tin oxide (ITO) magnetic control sputtering plating to polyimides tube outer surface, form the second electrode lay, obtain pressure sensitive cable 4#.
Use method same as in Example 1, record maximum output voltage and current signal has respectively reached 35V and 12 μ A.
Embodiment 5
The present embodiment pressure sensitive cable size is 1.6mm.Selecting purity 99.5%, the standard copper of diameter 1.5mm is as the first electrode cores.
The polyimide tube of commercial diameter 1.6mm is used as the first polymer insulation layer.The polyethylene terephthalate line of commercial diameter 2 μm, it is that 5 μm are wrapped on the first electrode cores surface by polyethylene terephthalate line with spacing, then by the polyimide tube put into coaxial for the first electrode cores, forming cavity, then edge seals with common rubberized fabric adhere.
By on indium tin oxide (ITO) magnetic control sputtering plating to polyimides tube outer surface, form the second electrode lay, obtain pressure sensitive cable 5#.
Use method same as in Example 1, record maximum output voltage and current signal has respectively reached 18V and 5 μ A.
Embodiment 6
The a diameter of 2.2mm of pressure sensitive cable 4 as shown in Figure 7.Selecting purity 99.5%, the industrial aluminum of diameter 1.5mm is as the first electrode cores 41.A surface of the pet film of thickness 0.25mm arranges the micro-nano concaveconvex structure of height of projection 150nm, then pet film is arranged on the first electrode cores 41 surface, form the second polymer layer 45 that thickness is 500nm.
The polymethyl methacrylate pipe of commercial diameter 2.2mm is used as the first polymer insulation layer 43.By the polymethyl methacrylate pipe put into coaxial for the first electrode cores 41, forming cavity 42, then edge seals with common rubberized fabric adhere.
By on indium tin oxide (ITO) magnetic control sputtering plating to polymethyl methacrylate tube outer surface, form the second electrode lay 44, obtain pressure sensitive cable 6#.
Use method same as in Example 1, record maximum output voltage and current signal has respectively reached 3V and 1 μ A.
Embodiment 7
Selecting purity 99.5%, the industrial aluminum of diameter 1.5mm is as the first electrode cores.The polymethyl methacrylate pipe of commercial diameter 1.6mm is used as the first polymer insulation layer.By the polymethyl methacrylate pipe put into coaxial for the first electrode cores and form cavity, then edge seals with common rubberized fabric adhere.
By on indium tin oxide (ITO) magnetic control sputtering plating to polymethyl methacrylate tube outer surface, form the second electrode lay, obtain pressure sensitive cable 7#.
Use method same as in Example 1, record maximum output voltage and current signal has respectively reached 5V and 2 μ A.
The pressure sensitive cable based on franklinic electricity of the present invention, under stress condition, by rubbing between friction between polymer and polymer or polymer and metal, the voltage signal that the pressure that can produce and be applied on pressure sensitive cable is directly proportional, has that production technology is simple, highly sensitive, fast response time, the feature of length in service life.
Claims (27)
1. a pressure sensitive cable based on franklinic electricity, it is characterised in that this pressure sensitive cable includes the first electrode cores, cavity, the first polymer insulation layer and the second electrode lay sequentially coaxially arranged；It is provided with the second polymer spacer the most in the cavities；When described pressure sensitive cable stretches naturally, the first polymer insulation layer is spaced apart by cavity with the first electrode cores, and during the bending of described pressure sensitive cable stress, the first polymer insulation layer contacts friction with the second polymer insulation layer；
Described first electrode cores and the second electrode lay are friction generator voltage and current output electrode.
Pressure sensitive cable based on franklinic electricity the most according to claim 1, it is characterised in that described second polymer spacer is the second polymer insulation layer, is arranged on the first electrode cores surface.
Pressure sensitive cable based on franklinic electricity the most according to claim 2, it is characterised in that the thickness of described second polymer insulation layer is 300nm to 1 μm.
nullPressure sensitive cable based on franklinic electricity the most according to claim 3，It is characterized in that，Described first polymer insulation layer material therefor is selected from Kapton、Aniline-formaldehyde resin thin film、Polyformaldehyde thin film、Ethyl cellulose film、Polyamide film、Melamino-formaldehyde thin film、Polyethylene Glycol succinate thin film、Cellulose membrane、Cellulose acetate film、10PE27 thin film、Polydiallyl phthalate thin film、Fiber sponge thin film、Elastic polyurethane body thin film、Styrene-acrylonitrile copolymer copolymer film、Styrene-butadiene-copolymer thin film、Staple fibre thin film、Polymethyl methacrylate film、Polyvinyl alcohol film、Polyisobutylene thin film、Pet film、Polyvinyl butyral film、Formaldehyde-phenol condensation polymer thin film、Neoprene thin film、Butadiene-propylene copolymer thin film、Natural rubber films、Polyacrylonitrile thin film、Any one in acrylonitrile vinyl chloride copolymer thin film.
nullPressure sensitive cable based on franklinic electricity the most according to claim 4，It is characterized in that，Described second polymer insulation layer material therefor and the first polymer insulation layer are different，Selected from Kapton、Aniline-formaldehyde resin thin film、Polyformaldehyde thin film、Ethyl cellulose film、Polyamide film、Melamino-formaldehyde thin film、Polyethylene Glycol succinate thin film、Cellulose membrane、Cellulose acetate film、10PE27 thin film、Polydiallyl phthalate thin film、Fiber sponge thin film、Elastic polyurethane body thin film、Styrene-acrylonitrile copolymer copolymer film、Styrene-butadiene-copolymer thin film、Staple fibre thin film、Polymethyl methacrylate film、Polyvinyl alcohol film、Polyisobutylene thin film、Pet film、Polyvinyl butyral film、Formaldehyde-phenol condensation polymer thin film、Neoprene thin film、Butadiene-propylene copolymer thin film、Natural rubber films、Polyacrylonitrile thin film、Any one in acrylonitrile vinyl chloride copolymer thin film.
Pressure sensitive cable based on franklinic electricity the most according to claim 5, it is characterised in that be provided with nanoscale at least one face in described first polymer insulation layer and the second polymer insulation layer apparent surface to micron-sized micro-nano concaveconvex structure.
Pressure sensitive cable based on franklinic electricity the most according to claim 6, it is characterised in that described nanoscale to micron-sized micro-nano concaveconvex structure height of projection is 50nm-300nm.
Pressure sensitive cable based on franklinic electricity the most according to claim 1, it is characterised in that the polymer dot interlace that described second polymer spacer is provided in cavity, described dot interlace height of projection is 100nm-1 μm.
Pressure sensitive cable based on franklinic electricity the most according to claim 8, it is characterised in that described dot interlace height of projection is 200nm-1 μm.
Pressure sensitive cable based on franklinic electricity the most according to claim 7, it is characterised in that in unit are, dot interlace quantity is 2 × 104Individual/m2To 2 × 107Individual/m2。
11. according to the pressure sensitive cable based on franklinic electricity described in claim 7 or 8, it is characterised in that described dot interlace material therefor is polymer, and different from the first polymer insulation layer material therefor.
null12. pressure sensitive cables based on franklinic electricity according to claim 9，It is characterized in that，Described dot interlace material therefor is selected from Kapton、Aniline-formaldehyde resin thin film、Polyformaldehyde thin film、Ethyl cellulose film、Polyamide film、Melamino-formaldehyde thin film、Polyethylene Glycol succinate thin film、Cellulose membrane、Cellulose acetate film、10PE27 thin film、Polydiallyl phthalate thin film、Fiber sponge thin film、Elastic polyurethane body thin film、Styrene-acrylonitrile copolymer copolymer film、Styrene-butadiene-copolymer thin film、Staple fibre thin film、Polymethyl methacrylate film、Polyvinyl alcohol film、Polyisobutylene thin film、Pet film、Polyvinyl butyral film、Formaldehyde-phenol condensation polymer thin film、Neoprene thin film、Butadiene-propylene copolymer thin film、Natural rubber films、Polyacrylonitrile thin film、Any one in acrylonitrile vinyl chloride copolymer thin film.
13. according to the pressure sensitive cable based on franklinic electricity described in any one of claim 6-10 or claim 12, it is characterised in that described dot interlace is arranged on the first electrode cores surface.
14. pressure sensitive cables based on franklinic electricity according to claim 11, it is characterised in that described dot interlace is arranged on the first electrode cores surface.
15. pressure sensitive cables based on franklinic electricity according to claim 1, it is characterised in that described second polymer spacer is wound around the polymer line on the first electrode cores surface, and the diameter of described polymer line is 500nm to 2 μm.
16. pressure sensitive cables based on franklinic electricity according to claim 12, it is characterised in that described polymer line winding spacing on the first electrode cores surface is that 0.1 μm is to 5 μm.
17. pressure sensitive cables based on franklinic electricity according to claim 16, it is characterised in that described polymer line winding spacing on the first electrode cores surface is that 1 μm is to 5 μm.
18. pressure sensitive cables based on franklinic electricity according to claim 15, it is characterised in that described polymer line material therefor and the first polymer insulation layer are different.
19. pressure sensitive cables based on franklinic electricity according to claim 16, it is characterised in that described polymer line material therefor and the first polymer insulation layer are different.
null20. pressure sensitive cables based on franklinic electricity according to claim 18，It is characterized in that，Described polymer line material therefor is selected from Kapton、Aniline-formaldehyde resin thin film、Polyformaldehyde thin film、Ethyl cellulose film、Polyamide film、Melamino-formaldehyde thin film、Polyethylene Glycol succinate thin film、Cellulose membrane、Cellulose acetate film、10PE27 thin film、Polydiallyl phthalate thin film、Fiber sponge thin film、Elastic polyurethane body thin film、Styrene-acrylonitrile copolymer copolymer film、Styrene-butadiene-copolymer thin film、Staple fibre thin film、Polymethyl methacrylate film、Polyvinyl alcohol film、Polyisobutylene thin film、Pet film、Polyvinyl butyral film、Formaldehyde-phenol condensation polymer thin film、Neoprene thin film、Butadiene-propylene copolymer thin film、Natural rubber films、Polyacrylonitrile thin film、Any one in acrylonitrile vinyl chloride copolymer thin film.
21. according to claim 1-10,12, pressure sensitive cable based on franklinic electricity described in any one of 14-20, it is characterised in that described first electrode cores is single structure.
22. according to claim 1-10,12, pressure sensitive cable based on franklinic electricity described in any one of 14-20, it is characterised in that described first electrode cores is the multicore structure be arrangeding in parallel.
23. according to claim 1-10,12, pressure sensitive cable based on franklinic electricity described in any one of 14-20, it is characterised in that described first electrode cores is wound around the multicore structure arranged.
24. according to claim 1-10,12, pressure sensitive cable based on franklinic electricity described in any one of 14-20, it is characterized in that, described first electrode cores material therefor is metal or alloy, and wherein metal is Au Ag Pt Pd, aluminum, nickel, copper, titanium, chromium, stannum, ferrum, manganese, molybdenum, tungsten or vanadium；Alloy is aluminium alloy, titanium alloy, magnesium alloy, beryllium alloy, copper alloy, kirsite, manganese alloy, nickel alloy, metal, ashbury metal, cadmium alloy, bismuth alloy, indium alloy, gallium alloy, tungsten alloy, molybdenum alloy, niobium alloy or tantalum alloy.
25. according to claim 1-10,12, pressure sensitive cable based on franklinic electricity described in any one of 14-20, it is characterised in that described first electrode cores material therefor is that surface is provided with the polymer of conductive layer, glass or fiber.
26. pressure sensitive cables based on franklinic electricity according to claim 25, it is characterized in that, described conductive layer is indium tin oxide film, graphene film, nano silver wire film or metal film, and metal material used by wherein said metal film is Au Ag Pt Pd, aluminum, nickel, copper, titanium, chromium, stannum, ferrum, manganese, molybdenum, tungsten or vanadium.
27. according to claim 1-10,12,14-20, pressure sensitive cable based on franklinic electricity described in 26 any one, it is characterized in that, described the second electrode lay material therefor is selected from indium tin oxide, Graphene electrodes, nano silver wire film, and metal or alloy, wherein metal is Au Ag Pt Pd, aluminum, nickel, copper, titanium, chromium, stannum, ferrum, manganese, molybdenum, tungsten or vanadium；Alloy is aluminium alloy, titanium alloy, magnesium alloy, beryllium alloy, copper alloy, kirsite, manganese alloy, nickel alloy, metal, ashbury metal, cadmium alloy, bismuth alloy, indium alloy, gallium alloy, tungsten alloy, molybdenum alloy, niobium alloy or tantalum alloy.
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| PCT/CN2013/079461 WO2014059807A1 (en) | 2012-10-19 | 2013-07-16 | Triboelectricity-based pressure-sensitive cable |
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| CN103776567A (en) | 2014-05-07 |
| WO2014059807A1 (en) | 2014-04-24 |
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