CN108872318A - A kind of self energizing respiration transducer and preparation method thereof based on bionic nasal cavity structure - Google Patents
A kind of self energizing respiration transducer and preparation method thereof based on bionic nasal cavity structure Download PDFInfo
- Publication number
- CN108872318A CN108872318A CN201810866613.1A CN201810866613A CN108872318A CN 108872318 A CN108872318 A CN 108872318A CN 201810866613 A CN201810866613 A CN 201810866613A CN 108872318 A CN108872318 A CN 108872318A
- Authority
- CN
- China
- Prior art keywords
- layer
- insulating cylinder
- triboelectrification
- unit
- nasal cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
A kind of self energizing respiration transducer and preparation method thereof based on bionic nasal cavity structure, belongs to sensor technical field.The present invention covers electrode layer in insulating cylinder inner wall surface, it is arranged as vibrissa on electrode layer along the triboelectrification unit of insulating cylinder inner wall inter normal direction setting, proper alignment forms power generation array, wherein triboelectrification unit includes flexible friction layer, conductive layer and sensitive thin film layer, under respiratory air flow driving, adjacent triboelectrification unit forms contact-separation circulation, to generate charge inducing, and exports electric signal to outer detecting circuit through electrode layer.The present invention compares traditional sensors, while guaranteeing device miniaturization, the electric signal of output is significantly enhanced by increasing CONTACT WITH FRICTION area, be conducive to improve detection accuracy, and device structure design novelty is simple, low in cost, light portable, and material is simple and easy to get, easy to process, inventive sensor is not necessarily in particular surroundings, compatible strong, application is unrestricted.
Description
Technical field
The invention belongs to sensor technical fields, and in particular to a kind of self energizing breathing sensing based on bionic nasal cavity structure
Device and preparation method thereof.
Background technique
It is existing studies have shown that people breathing in substance type and content it is related with the physical condition of people, thus develop
A kind of emerging medical diagnosis on disease mode --- breathing diagnosis reflects respective sets that is, by the variation of detection people's components of exhaled breath
The variation of cell metabolism is knitted, and then symbolizes the health status of human body.Compared to more traditional diagnostic method, breathing diagnosis relies on
Its more quick and easy advantage gradually by the attention of more and more researchers and is rapidly developed, such as：Inspection
It looks into stomach Helicobacter pylori (HP) and breath test is widely used；The clinical diagnosis of asthma is by the nitrogen oxides in exhaled breath condensate
Content is as important Testing index；In addition to this, diabetes detection and the early diagnosis of lung cancer, breathing detection are also always to grind
Study carefully hot spot.
Basis of the breathing detection as breathing diagnosis, purpose to be achieved is object in Accurate Determining people's exhaled gas
The ingredient and content of matter, and characteristic gas cost relevant to pathological change is determined on this basis, then passes through statistics, mode
The modes such as identification establish disease diagnostic model.Therefore, develop it is a kind of for people breathing in gaseous matter detection sensor (breathe
Sensor) it is of great significance, the research and development of respiration transducer have a vast market development prospect in breathing diagnostic field.
Gas sensor is the element for responding under test gas, is that chemical signal is converted to telecommunications in gas sensor
Number core element, however the variation for measuring resistance or capacitor usually requires matched circuit system, and needs outside
Portion's power supply provides energy for it, this allows for gas sensor and needs many auxiliary elements, leads to complicated integral structure, is difficult to take
Band, and energy consumption is high, can not meet the work requirements of sensors with auxiliary electrode for a long time.Self energizing technology energy from acquisition external environment
Itself work is supplied, gas sensor of the research based on self energizing technology is for solving the long-term autonomous one kind of can yet be regarded as of powering of device
Ideal scheme.Nowadays, the exploration of energy acquisition technology and new energy becomes the forward position of research field in each subject
Direction.Although nearly two a century has been developed in conventional electric power technology, the mankind are for new energy and novel energy collection side
The exploration of method but never stopped, such as photoelectric effect, piezoelectric effect, pyroelectric effect, electrochemical reaction and electrostatic induction
Deng.The problems such as traditional gas sensor life-time is short, power consumption is high to solve, and external power supply is needed to power, researcher incite somebody to action from
Technology transfer is energized into gas sensor research, develops and is such as passed based on the self energizing gas of photoelectric effect or photovoltaic effect
Sensor, however this kind of equipment have output it is small, production it is complicated, at high cost, be difficult to the defects of large-scale integrated, constrain breathing biography
The functionization and commercialization of sensor.
The mechanical energy form of energy one of the most universal as nature, with widely distributed, huge, wiper ring
The features such as protecting, can directly collecting, has been increasingly becoming the hot spot of the energy and investigation of materials field in recent years.Triboelectrification is daily life
A kind of middle very universal phenomenon, it refers to that generated charge transfer process is physically contacted by passing through between object.Day
Chang Jing electricity is generated due to transfer occurs for triboelectric charge in triboelectric processes, the shape of triboelectric charge in triboelectric processes
At the electropolar difference of friction for depending on contact material.Although this universal phenomenon of triboelectrification is by human cognitive nearly one thousand years
Time, but its Forming Mechanism still do not studied completely it is clear.Now current scientific circles, which compare a kind of explanation accepted, is,
When two kinds of materials electropolar with differentiated friction, in its contact position, portion forms chemical bond, the shape of chemical bond
At meeting so that charge is transferred to another material from a kind of material to balance the electrochemical potential of the two, the charge of transfer can be electricity
Son, ion or molecule；When the separation of above two material, some key atoms of contact surface can retain extra electronics, separately
Some key atoms can then abandon extra electronics, to form triboelectric charge on contact surface surface.Pass through triboelectrification and electrostatic
It is defeated can be converted directly into electric signal by friction electricity nano generator prepared by the coupling of induction for mechanical energy in environment
Out, have many advantages, such as that output signal is strong, of simple structure and low cost, integrated level is high, mentioned for the research of self energizing gas sensor
A development new direction is supplied.
Summary of the invention
In view of prior art requirement, the present invention provides a kind of for detecting the novel self-supplying power sensor of breathing gas,
The sensor uses bionic nasal cavity structure, and sensitive material and friction material are combined, using respiratory air flow as energy source,
It is final to realize autonomous, target substance in stable detection exhaled air flow concentration, in addition, the present invention also provides the preparation sides of sensor
Method, preparation process is simple, at low cost, is advantageously implemented industrialized production.
For above-mentioned purpose, the present invention is provided the following technical solutions：
On the one hand the present invention provides a kind of self energizing respiration transducer based on bionic nasal cavity structure, it is characterised in that：Packet
The insulating cylinder for being provided with and passing through for respiratory air flow is included, the inner wall surface of the insulating cylinder is provided with electrode layer；On the electrode layer
It is provided with along the equally distributed power generation array of insulating cylinder inner circumferential；The component units of the power generation array are mutually independent friction
Electric unit is played, the triboelectrification unit includes flexible friction layer, the sensitive thin of one side surface of flexible friction layer is arranged in
Film layer and the conductive layer that another side surface of flexible friction layer is set；The triboelectrification unit is along insulating cylinder inner wall
Normal direction setting, so that the conductive layer is in contact with the electrode layer of insulating cylinder inner wall；Any one triboelectrification unit and its
The triboelectrification unit adjacent along gas flowing path direction is oppositely arranged, when airless passes through insulating cylinder, adjacent friction
It rises and is not in contact with each other between electric unit, when there is air-flow to pass through insulating cylinder, conductive layer and flexibility in two neighboring triboelectrification unit
Frictional layer forms contact-separation circulation, to generate charge inducing, and exports electricity to outer detecting circuit by the electrode layer
Learn signal.
Further, there is friction electrode sequence in the present invention between the material of flexible friction layer and the material of the conductive layer
Difference.
Further, triboelectrification unit is strip triboelectrification unit in the present invention.
Further, sensitive thin film layer uses the organic polymer sensitive to object gas, metal oxide in the present invention
And inorganic material；It is preferred that the organic polymer includes but is not limited to：Ethylene oxide (PEO), polyethyleneimine
(PEI), kayexalate (PSS), polypyrrole (Ppy), polyaniline (PANi), polyimides (PI), in chitosan (CS)
Any one or more；It is preferred that the metal oxide includes but is not limited to：Fe2O3、ZnO2、SnO2、TiO2With
WO3In it is any or a variety of；It is preferred that the inorganic material includes but is not limited to：Graphene oxide (GO) and also
It is any one or more in former graphene oxide (rGO).
Further, the material of flexible friction layer is flexible polymer in the present invention, including but not limited to：Teflon
(PTFE), any in polyethylene terephthalate (PET) and polyimides (PI).
Further, the material of conductive layer is any or more in aluminium, nickel, copper, silver, gold and tin indium oxide in the present invention
Kind.
Further, the conductive layer in the present invention on triboelectrification unit can deposit conduction material in flexible friction layer surface
Material directly pastes conductive film, it is preferred that, the thickness range of conductive layer is 100~200nm；As preferred side
Formula, electrode layer with a thickness of 50~70 μm.
Further, the electrode layer in the present invention in insulating cylinder inner wall surface, which can directly select, is bonded copper foil on its surface
Or aluminium foil；It is preferred that copper foil or aluminium foil with a thickness of 50~150 μm.
Further, the material of insulating cylinder of the present invention is polyethylene, polypropylene, polyvinyl chloride, polystyrene and organic glass
It is any in glass.
On the other hand the present invention provides a kind of preparation method of self energizing respiration transducer based on bionic nasal cavity structure,
It is characterized in that, includes the following steps：
Step A：Make triboelectrification unit；Select insulating polymer flexible as the material of flexible friction layer, then
In the laminated production sensitive thin film layer of flexible friction, another side makes conductive layer and forms a triboelectrification unit, repetitive operation
Obtain the triboelectrification unit of several same sizes；
Step B：Electrode layer is made in insulating cylinder inner wall surface, the triboelectrification unit that step A is obtained is along insulating cylinder
Wall surface inter normal direction setting, so that the conductive layer is in contact with the electrode layer, and by triboelectrification unit along insulating cylinder
Inner circumferential is uniformly distributed to form power generation array, so that any one triboelectrification unit is adjacent along gas flowing path direction with it
Triboelectrification unit is oppositely arranged, and when airless passes through insulating cylinder, is not in contact with each other between adjacent triboelectrification unit, when having
When air-flow passes through insulating cylinder, conductive layer contacts-separates circulation with the formation of flexible friction layer in two neighboring triboelectrification unit, from
And convert mechanical energy into electric energy and the electrical signal variation through outer detecting circuit output sensitive thin film.
Further, there is friction electrode sequence in the present invention between the material of flexible friction layer and the material of the conductive layer
Difference.
Further, triboelectrification unit is strip triboelectrification unit in the present invention.
Further, sensitive thin film layer uses the organic polymer sensitive to object gas, metal oxide in the present invention
And inorganic material；It is preferred that the organic polymer includes but is not limited to：Ethylene oxide (PEO), polyethyleneimine
(PEI), kayexalate (PSS), polypyrrole (Ppy), polyaniline (PANi), polyimides (PI), in chitosan (CS)
Any one or more；It is preferred that the metal oxide includes but is not limited to：Fe2O3、ZnO2、SnO2、TiO2With
WO3In it is any or a variety of；It is preferred that the inorganic material includes but is not limited to：Graphene oxide (GO) and also
It is any one or more in former graphene oxide (rGO).
Further, the material of flexible friction layer is flexible polymer in the present invention, including but not limited to：Teflon
(PTFE), any in polyethylene terephthalate (PET) and polyimides (PI).
Further, the material of conductive layer is any or more in aluminium, nickel, copper, silver, gold and tin indium oxide in the present invention
Kind.
Further, the conductive layer in the present invention on triboelectrification unit can deposit conduction material in flexible friction layer surface
Material directly pastes conductive film, it is preferred that, the thickness range of conductive layer is 100~200nm；As preferred side
Formula, electrode layer with a thickness of 50~70 μm.
Further, the electrode layer in the present invention in insulating cylinder inner wall surface, which can directly select, is bonded copper foil on its surface
Or aluminium foil；It is preferred that copper foil or aluminium foil with a thickness of 50~150 μm.
Further, the material of insulating cylinder of the present invention is polyethylene, polypropylene, polyvinyl chloride, polystyrene and organic glass
It is any in glass.
The principle of the present invention is as follows：
Compared with prior art, the beneficial effects of the invention are as follows：
Compared to traditional sensors, the present invention directlys adopt respiratory air flow as energy-supplementing source, drives the spontaneous inspection of sensor
The concentration for surveying object gas, sensitive material is deposited on triboelectrification unit, by air-sensitive chemism and the electric principle phase that rubs
In conjunction with bionic nasal cavity structure, flexible friction being played electric unit and forms array in test chamber, form integrated self energizing sensing
Device ensure that the micromation of device, this array structure increases CONTACT WITH FRICTION area to enhance output electric signal, be conducive to
Detection accuracy is improved, device structure design novelty of the present invention is simple, low in cost, light portable, and material is simple and easy to get, adds
Work is convenient, and inventive sensor is not necessarily in particular surroundings, and compatibility is strong, and application is unrestricted.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the self energizing gas sensor that the specific embodiment of the invention provides.
The structural representation of triboelectrification unit in the self energizing gas sensor that Fig. 2 provides for the specific embodiment of the invention
Figure.
Fig. 3 is the preparation technology flow chart for the self energizing gas sensor that the specific embodiment of the invention provides.
Fig. 4 is the working principle diagram for the self energizing gas sensor that the specific embodiment of the invention provides.
Fig. 5 is the self energizing gas sensor sensitive mechanism schematic diagram that the specific embodiment of the invention provides.
Fig. 6 is voltage output of the self energizing gas sensor that provides of the specific embodiment of the invention to various concentration ammonia
Figure.
In figure：1 is insulating cylinder, and 2 be metal film, and 3 be flexible friction layer, and 4 be conductive layer, and 5 be gas-sensitive film layer, 6
For Keithley6514 electrometer.
Specific embodiment
Clear, complete description is carried out with Figure of description and to the present invention combined with specific embodiments below, to ability
Field technique personnel are it will be appreciated that the working principle of the invention and the function of being realized：
Fig. 1 is a kind of specific embodiment of the self energizing gas sensor of the present invention provided, unit construction mo(u)ld
For quasi- figure as shown in Fig. 1 (b), Fig. 1 (a) is Fig. 1 (b) radially gained section simulation drawing.Self energizing gas sensor includes setting
There are the insulating cylinder 1 passed through for respiratory air flow, the hardness that the insulating cylinder 1 needs to have certain as test chamber；The insulating cylinder 1
Inner wall surface be provided with metal film 2 as electrode layer；It is provided on the metal film 2 equally distributed along insulating cylinder inner circumferential
Power generation array；The component units of the power generation array are mutually independent triboelectrification unit, described triboelectrification unit such as Fig. 2
Shown, the present embodiment uses strip triboelectrification unit, including strip flexible friction layer 3, setting in the strip flexible friction
The sensitive thin film layer 5 of 3 one side surface of layer and the conductive layer 4 that another side surface of the strip flexible friction layer 3 is set；It is described to rub
It has wiped electric unit to be arranged along 1 inner wall inter normal direction of insulating cylinder, so that the metal film 2 of the conductive layer 4 and 1 inner wall of insulating cylinder
Between contact it is good, and by insulating cylinder inner wall electrode, i.e. 2 extraction wire of metal film is connect with outer detecting circuit；Any one
The triboelectrification unit triboelectrification unit adjacent along gas flowing path direction with it is oppositely arranged, when airless passes through insulation
When cylinder 1, it is not in contact with each other between adjacent triboelectrification unit, when there is air-flow by insulating cylinder 1, two neighboring triboelectrification list
Conductive layer 4 contacts-separates circulation with the formation of flexible friction layer 3 to generate charge inducing in member, is examined by metal film 2 to outside
Slowdown monitoring circuit exports electrical signal.
In the present embodiment, there is friction in triboelectrification unit between the material of flexible friction layer 3 and the material of conductive layer 4
Electrode sequence difference.In the present embodiment, sensitive thin film layer 5 using the organic polymer sensitive to object gas, metal oxide and
Inorganic material；
Preferably, the organic polymer includes but is not limited to：Ethylene oxide (PEO), polyethyleneimine
(PEI), kayexalate (PSS), polypyrrole (Ppy), polyaniline (PANi), polyimides (PI), in chitosan (CS)
Any one or more；
Preferably, the metal oxide includes but is not limited to：Fe2O3、ZnO2、SnO2、TiO2And WO3In
It is any or a variety of；
Preferably, the inorganic material includes but is not limited to：Graphene oxide (GO) and oxygen reduction fossil
It is any one or more in black alkene (rGO).
As a kind of specific embodiment, the material of flexible friction layer 3 is flexible polymer, including but not limited to：Iron fluorine
It is any in imperial (PTFE), polyethylene terephthalate (PET) and polyimides (PI).
As a kind of specific embodiment, the material of conductive layer 4 can be in aluminium, nickel, copper, silver, gold and tin indium oxide
It is one or more kinds of.
As a kind of specific embodiment, the conductive layer 4 on triboelectrification unit can be deposited in flexible friction layer surface
Conductive material directly pastes conductive film, and preferably, the thickness range of conductive layer 4 is 100~200nm；
Preferably, electrode layer with a thickness of 50~70 μm.
As a kind of specific embodiment, the electrode layer in 1 inner wall surface of insulating cylinder, which not only can choose, is coated with metal film
2, it can also can directly select and be bonded copper foil or aluminium foil on its surface；Preferably, the thickness of copper foil or aluminium foil
It is 50~150 μm.
As a kind of specific embodiment, the material of insulating cylinder 1 be polyethylene, polypropylene, polyvinyl chloride, polystyrene and
It is any in organic glass.
It is illustrated in figure 3 the present embodiment provides the preparation technology flow chart of self energizing gas sensor, includes the following steps：
Step (a)：As shown in Fig. 3 (a), select polystyrene as the material of insulating cylinder 1, the length of insulating cylinder is
10cm, the barrel that insulate with a thickness of 1mm, internal diameter 4cm；
Step (b)：As shown in Fig. 3 (b), metal film 2, the thickness of the metal film 2 are made in the inner wall surface of insulating cylinder 1
It is 50~150 μm；
Step (c)：As shown in Fig. 3 (c), select polyethylene terephthalate as the material of flexible friction layer 3,
Middle flexible friction layer 3 with a thickness of 100~200 μm；
Step (d)：As shown in Fig. 3 (d), in the face deposited metal film or fitting metal electrode of flexible friction layer 3
As conductive layer 4, wherein the metallic film with a thickness of 100~200nm, metal electrode with a thickness of 50~70 μm；
Step (e)：As shown in Fig. 3 (e), gas sensitive is deposited in the another side of the flexible friction layer 3 handled through step (d)
Form sensitive thin film layer 5；The present embodiment selection large area friction layer material is cut out according to step (d) and (e) production monolith again respectively
It is cut to the triboelectrification unit of multiple strips, wherein the length of strip triboelectrification unit is about 10mm, and width is about 2mm,
It can repeat the triboelectrification unit that step (c)-(e) makes suitable dimension one by one；
Step (f)：The multiple triboelectrification units of gained are arranged along insulating cylinder inner wall inter normal direction, so that described lead
Electric layer is in contact with the electrode layer, and triboelectrification unit is uniformly distributed to form power generation array along insulating cylinder inner circumferential, battle array
The spacing (the present embodiment 4mm) of adjacent triboelectrification unit should be less than the length of triboelectrification unit in column, so that any
A triboelectrification unit triboelectrification unit adjacent along gas flowing path direction with it is oppositely arranged and passes through in airless
Adjacent triboelectrification unit is not in contact with each other when insulating cylinder, and when there is air-flow to pass through insulating cylinder, two neighboring triboelectrification list
Conductive layer is capable of forming with flexible friction layer in member contacts-separates circulation, to convert mechanical energy into electric energy and examine through outside
Slowdown monitoring circuit exports the electrical signal variation of sensitive thin film.
The working principle of the 4 self energizing sensors that the present invention will be described in detail provides with reference to the accompanying drawing：
The present invention copys organism nasal cavity structure, cavity is used as using the insulating cylinder 1 for capableing of circulated gases, in insulating cylinder 1
Inner wall surface, which is formed, covers entire metal film 2 as electrode layer, and large area, uniformly neat distribution are provided on metal film 2
Triboelectrification unit, to constitute power generation array；Using flexible polymer as frictional layer in triboelectrification unit of the present invention
Material, and flexible friction layer 3 a side surface formed be directed under test gas substance sensitive thin film layer 5, frictional layer is relatively another
One side surface forms conductive layer 4；Triboelectrification unit is arranged along insulating cylinder inner wall inter normal direction, so that conductive layer 4 and gold
Belong to film 2 to contact well, it is adjacent to rub when there is no gas to flow through insulating cylinder 1 so as the vibrissa grown in nasal cavity
Electric unit keeps parallel and is not in contact with each other, when gas passes through insulating cylinder 1, since triboelectrification unit uses flexible material meeting
It bends, is contacted with adjacent triboelectrification unit, so that the conductive layer 4 on triboelectrification unit has sensitivity with adjoining
The flexible friction layer 3 of film layer 5 is in contact, the flexibility due to electrostatic screening effect, on conductive layer 4 and adjacent triboelectrification unit
Frictional layer 3 has the charge of the equivalent opposite sex, when the air-flow passed through in insulating cylinder 1 reduces, since triboelectrification unit is using flexible
Material has elasticity, so that conductive layer 4 is separated with adjacent flexible friction 3, as separation distance is increasing, conductive layer
4 electronics, which flow into positive charge, constantly to be reduced, and when triboelectrification unit reverts to upright state, positive charge is minimum on conductive layer 4,
When continuing to have air-flow by insulating cylinder 1, adjacent triboelectrification unit is again adjacent to finally fit together, conductive layer during this
Positive charge on 1 can gradually increase；Adjacent triboelectrification unit is driven to form contact-separation as described above using respiratory air flow
Circulation, contact-separation circulation pattern makes the electrical signal that alternation is formed in detection circuit, and flexible friction rises and sets on electric unit
There is sensitive thin film layer 5, when object gas can change the electricity on 3 surface of flexible friction layer in 5 adsorption insulating cylinder 1 of sensitive thin film layer
Lotus amount, so that charge inducing also accordingly changes on conductive layer, and then causes the electrical signal of output to change, thus just
The concentration of object gas in detectable middle respiratory air flow.
Fig. 5 is specifically with metal oxide (such as zinc oxide) to NH3For Response Mechanism, self energizing gas of the present invention is shown
The sensitive mechanism of sensor：Under air atmosphere, sensitive material adsorption of oxygen, oxygen shape in conjunction with sensitive material surface electronic
At O- 2(reaction equation is specially：O2(gas)+e-→O- 2(ads)), when there is NH3After gas is passed through, NH3With sensitive material surface
O- 2(reaction equation is specially for reaction：4NH3+3O- 2(ads)→2N2+6H2O+3e-), sensitive material surface O- 2It reduces, therefore contacts
The electrically charged density in surface reduces, so generator electricity output reduces.
When the certain density object gas of 5 adsorption of sensitive thin film layer, frictional layer surface charge amount, Jin Ergai can be changed
Become sensor output electrical signals and (V occursOC=σ d/ ε0), it thus can detect the concentration of object gas in tidal air.
Fig. 6 is voltage output figure of the self energizing gas sensor provided by the invention to various concentration ammonia.It can be with by Fig. 6
Find out：It is passed through the ammonia of various concentration, the output voltage of the sensor increases with ammonia concentration and reduced.
The embodiment of the present invention is elaborated in conjunction with attached drawing above, but the invention is not limited to above-mentioned
Specific embodiment, above-mentioned specific embodiment is only schematical, rather than restrictive, the ordinary skill people of this field
Member under the inspiration of the present invention, can also make many in the case where not departing from present inventive concept and claimed range
Deformation, these belong to protection of the invention.
Claims (10)
1. a kind of self energizing respiration transducer based on bionic nasal cavity structure, it is characterised in that：Including being provided with for respiratory air flow
By insulating cylinder, the inner wall surface of the insulating cylinder is provided with electrode layer；It is provided on the electrode layer along insulating cylinder inner circumferential
To equally distributed power generation array；The component units of the power generation array are mutually independent triboelectrification unit, the friction
Electric unit is played to include flexible friction layer, the sensitive thin film layer that one side surface of flexible friction layer is arranged in and be arranged described soft
The conductive layer of property another side surface of frictional layer；The triboelectrification unit is arranged along insulating cylinder inner wall inter normal direction, so that
The conductive layer is in contact with the electrode layer of insulating cylinder inner wall；Any one triboelectrification unit and its along gas flowing path direction
Adjacent triboelectrification unit is oppositely arranged, and when airless passes through insulating cylinder, is not connect mutually between adjacent triboelectrification unit
Touching, when there is air-flow to pass through insulating cylinder, conductive layer is contacted-is separated with the formation of flexible friction layer in two neighboring triboelectrification unit
Circulation to generate charge inducing, and exports electrical signal to outer detecting circuit by the electrode layer.
2. a kind of self energizing respiration transducer based on bionic nasal cavity structure according to claim 1, it is characterised in that：Institute
It states between the material of flexible friction layer and the material of the conductive layer and there is friction electrode sequence difference.
3. a kind of self energizing respiration transducer based on bionic nasal cavity structure according to claim 1, it is characterised in that：Institute
Stating triboelectrification unit is strip triboelectrification unit.
4. a kind of self energizing respiration transducer based on bionic nasal cavity structure according to claim 1, it is characterised in that：Institute
Sensitive thin film layer is stated using organic polymer, metal oxide or the inorganic material sensitive to object gas.
5. a kind of self energizing respiration transducer based on bionic nasal cavity structure according to claim 1, it is characterised in that：It is soft
Property frictional layer material be flexible polymer, including：Teflon (PTFE), polyethylene terephthalate (PET) and polyamides
It is any in imines (PI).
6. a kind of self energizing respiration transducer based on bionic nasal cavity structure according to claim 1, it is characterised in that：Institute
It is any or a variety of in aluminium, nickel, copper, silver, gold and tin indium oxide for stating the material of conductive layer.
7. a kind of self energizing respiration transducer based on bionic nasal cavity structure according to claim 1, it is characterised in that：Institute
It is any in polyethylene, polypropylene, polyvinyl chloride, polystyrene and organic glass for stating the material of insulating cylinder.
8. a kind of preparation method of the self energizing respiration transducer based on bionic nasal cavity structure, which is characterized in that including walking as follows
Suddenly：
Step A：Make triboelectrification unit；Select insulating polymer flexible as the material of flexible friction layer, then soft
Property the laminated production sensitive thin film layer of friction, another side makes conductive layer one triboelectrification unit of formation, and repetitive operation obtains
The triboelectrification unit of several same sizes；
Step B：Electrode layer is made in insulating cylinder inner wall surface, the triboelectrification unit that step A is obtained is along insulating cylinder inner wall
Inter normal direction setting, so that the conductive layer is in contact with the electrode layer, and by triboelectrification unit along insulating cylinder inner circumferential
Power generation array is formed to being uniformly distributed, so that any one triboelectrification unit is with it along the adjacent friction in gas flowing path direction
It plays electric unit to be oppositely arranged, when airless passes through insulating cylinder, be not in contact with each other between adjacent triboelectrification unit, when there is air-flow
When passing through insulating cylinder, conductive layer contacts-separates circulation with the formation of flexible friction layer in two neighboring triboelectrification unit, thus will
Mechanical energy is converted to electric energy and the electrical signal through outer detecting circuit output sensitive thin film changes.
9. a kind of self energizing respiration transducer based on bionic nasal cavity structure according to claim 8, it is characterised in that：Institute
It states between the material of flexible friction layer and the material of the conductive layer and there is friction electrode sequence difference.
10. a kind of self energizing respiration transducer based on bionic nasal cavity structure according to claim 8, it is characterised in that：
The sensitive thin film layer uses organic polymer, metal oxide or the inorganic material sensitive to object gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810866613.1A CN108872318B (en) | 2018-08-01 | 2018-08-01 | Self-powered respiration sensor based on bionic nasal cavity structure and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810866613.1A CN108872318B (en) | 2018-08-01 | 2018-08-01 | Self-powered respiration sensor based on bionic nasal cavity structure and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108872318A true CN108872318A (en) | 2018-11-23 |
| CN108872318B CN108872318B (en) | 2020-09-29 |
Family
ID=64306963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810866613.1A Active CN108872318B (en) | 2018-08-01 | 2018-08-01 | Self-powered respiration sensor based on bionic nasal cavity structure and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108872318B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109540999A (en) * | 2018-11-29 | 2019-03-29 | 电子科技大学 | Wireless and passive self energizing atmospheric environment sensor array and preparation method thereof |
| CN109540997A (en) * | 2018-11-29 | 2019-03-29 | 电子科技大学 | Self energizing automobile exhaust sensor array based on displacement current and preparation method thereof |
| CN109540998A (en) * | 2018-11-29 | 2019-03-29 | 电子科技大学 | Gas sensor array and preparation method thereof based on wireless power transmission |
| CN110681259A (en) * | 2019-09-06 | 2020-01-14 | 北京工业大学 | Method and structural device for enhancing formaldehyde removal efficiency and service life of manganese oxide through nano friction |
| CN110715957A (en) * | 2019-09-10 | 2020-01-21 | 中国科学院宁波材料技术与工程研究所 | Polystyrene sulfonic acid doped polyaniline composite flexible membrane based high-efficiency ammonia gas sensor and preparation method thereof |
| CN113397483A (en) * | 2021-05-20 | 2021-09-17 | 上海交通大学 | Flexible respiration sensor and preparation method thereof |
| CN113679123A (en) * | 2021-08-23 | 2021-11-23 | 电子科技大学 | Self-driven breathing monitoring intelligent mask and preparation method thereof |
| CN114323407A (en) * | 2021-12-28 | 2022-04-12 | 电子科技大学 | Flexible film type self-driven multifunctional sensor and preparation method thereof |
| CN118067293B (en) * | 2024-04-25 | 2024-06-21 | 清华大学深圳国际研究生院 | Friction electrotouch sensor of multichannel bionic hair array and preparation method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003315264A (en) * | 2001-03-08 | 2003-11-06 | Nippon Koden Corp | Sensor for measuring carbon dioxide gas in respiratory gas |
| CN101226166A (en) * | 2008-01-31 | 2008-07-23 | 浙江大学 | Low-power consumption hand-hold electric nasus system for testing on-site |
| CN101935010A (en) * | 2010-09-07 | 2011-01-05 | 上海交通大学 | Preparation method of carbon nano tube nasaltube type gas-sensitive sensor based on polyimide flexible substrate |
| JP2014021126A (en) * | 2012-07-20 | 2014-02-03 | Eps Bio Technology Corp | Electronic nasal device |
| CN106018498A (en) * | 2016-07-28 | 2016-10-12 | 电子科技大学 | Self-powdered sensor for detecting automobile tail gas and preparation method thereof |
| CN106153690A (en) * | 2016-07-28 | 2016-11-23 | 电子科技大学 | A kind of self energizing sensor for alcohol detection and preparation method thereof |
| CN106680328A (en) * | 2017-01-04 | 2017-05-17 | 清华大学深圳研究生院 | Gas sensor array and manufacturing method thereof |
| CN108241017A (en) * | 2018-01-30 | 2018-07-03 | 电子科技大学 | A kind of flexible self-powered based on alveolar bionics structure is taken offence body sensor and preparation method thereof |
-
2018
- 2018-08-01 CN CN201810866613.1A patent/CN108872318B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003315264A (en) * | 2001-03-08 | 2003-11-06 | Nippon Koden Corp | Sensor for measuring carbon dioxide gas in respiratory gas |
| CN101226166A (en) * | 2008-01-31 | 2008-07-23 | 浙江大学 | Low-power consumption hand-hold electric nasus system for testing on-site |
| CN101935010A (en) * | 2010-09-07 | 2011-01-05 | 上海交通大学 | Preparation method of carbon nano tube nasaltube type gas-sensitive sensor based on polyimide flexible substrate |
| JP2014021126A (en) * | 2012-07-20 | 2014-02-03 | Eps Bio Technology Corp | Electronic nasal device |
| CN106018498A (en) * | 2016-07-28 | 2016-10-12 | 电子科技大学 | Self-powdered sensor for detecting automobile tail gas and preparation method thereof |
| CN106153690A (en) * | 2016-07-28 | 2016-11-23 | 电子科技大学 | A kind of self energizing sensor for alcohol detection and preparation method thereof |
| CN106680328A (en) * | 2017-01-04 | 2017-05-17 | 清华大学深圳研究生院 | Gas sensor array and manufacturing method thereof |
| CN108241017A (en) * | 2018-01-30 | 2018-07-03 | 电子科技大学 | A kind of flexible self-powered based on alveolar bionics structure is taken offence body sensor and preparation method thereof |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109540999A (en) * | 2018-11-29 | 2019-03-29 | 电子科技大学 | Wireless and passive self energizing atmospheric environment sensor array and preparation method thereof |
| CN109540997A (en) * | 2018-11-29 | 2019-03-29 | 电子科技大学 | Self energizing automobile exhaust sensor array based on displacement current and preparation method thereof |
| CN109540998A (en) * | 2018-11-29 | 2019-03-29 | 电子科技大学 | Gas sensor array and preparation method thereof based on wireless power transmission |
| CN110681259A (en) * | 2019-09-06 | 2020-01-14 | 北京工业大学 | Method and structural device for enhancing formaldehyde removal efficiency and service life of manganese oxide through nano friction |
| CN110681259B (en) * | 2019-09-06 | 2024-04-19 | 北京工业大学 | Method and structural device for enhancing formaldehyde removal efficiency and service life of manganese oxide by nano friction |
| CN110715957A (en) * | 2019-09-10 | 2020-01-21 | 中国科学院宁波材料技术与工程研究所 | Polystyrene sulfonic acid doped polyaniline composite flexible membrane based high-efficiency ammonia gas sensor and preparation method thereof |
| CN113397483A (en) * | 2021-05-20 | 2021-09-17 | 上海交通大学 | Flexible respiration sensor and preparation method thereof |
| CN113679123A (en) * | 2021-08-23 | 2021-11-23 | 电子科技大学 | Self-driven breathing monitoring intelligent mask and preparation method thereof |
| CN113679123B (en) * | 2021-08-23 | 2023-05-05 | 电子科技大学 | Self-driven breathing monitoring intelligent mask and preparation method thereof |
| CN114323407A (en) * | 2021-12-28 | 2022-04-12 | 电子科技大学 | Flexible film type self-driven multifunctional sensor and preparation method thereof |
| CN114323407B (en) * | 2021-12-28 | 2022-09-09 | 电子科技大学 | Flexible film type self-driven multifunctional sensor and preparation method thereof |
| CN118067293B (en) * | 2024-04-25 | 2024-06-21 | 清华大学深圳国际研究生院 | Friction electrotouch sensor of multichannel bionic hair array and preparation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108872318B (en) | 2020-09-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108872318A (en) | A kind of self energizing respiration transducer and preparation method thereof based on bionic nasal cavity structure | |
| Wang et al. | Multifunctional poly (vinyl alcohol)/Ag nanofibers-based triboelectric nanogenerator for self-powered MXene/tungsten oxide nanohybrid NO2 gas sensor | |
| Lou et al. | Recent progress of self‐powered sensing systems for wearable electronics | |
| Chen et al. | Recent progress in self‐powered multifunctional e‐skin for advanced applications | |
| Zhou et al. | Triboelectric nanogenerator‐based sensor systems for chemical or biological detection | |
| Zhang et al. | Diversiform sensors and sensing systems driven by triboelectric and piezoelectric nanogenerators | |
| Dahiya et al. | Energy autonomous wearable sensors for smart healthcare: a review | |
| Wang et al. | Multifunctional respiration-driven triboelectric nanogenerator for self-powered detection of formaldehyde in exhaled gas and respiratory behavior | |
| Wang et al. | An integrated flexible self-powered wearable respiration sensor | |
| US11730392B2 (en) | Breathing-driven flexible respiratory sensor and preparation method thereof | |
| Li et al. | Human joint enabled flexible self-sustainable sweat sensors | |
| CN106018498B (en) | It is a kind of for self energizing sensor of automobile emission gas analyzer and preparation method thereof | |
| CN106153690B (en) | A kind of self energizing sensor and preparation method thereof for alcohol detection | |
| CN110086373B (en) | Bionic shell-type breath monitoring friction nano generator and preparation method thereof | |
| Xu et al. | Performance enhancement of triboelectric nanogenerators using contact-separation mode in conjunction with the sliding mode and multifunctional application for motion monitoring | |
| Sardana et al. | Edge-site-enriched ti3c2t x mxene/mos2 nanosheet heterostructures for self-powered breath and environmental monitoring | |
| Dai et al. | Recent progress of self-powered respiration monitoring systems | |
| CN108241017B (en) | Flexible self-driven gas sensor based on alveolar bionic structure and preparation method thereof | |
| CN109787504A (en) | A kind of breathing of three dimensional fold formula is from driving flexible respiration monitoring sensor and preparation method thereof | |
| He et al. | Multifunctional triboelectric nanogenerator based on flexible and self-healing sandwich structural film | |
| CN111624248A (en) | Wearable sweat pH value detection device | |
| Colomer i Farrarons et al. | Portable Bio-Devices: Design of electrochemical instruments from miniaturized to implantable devices | |
| CN112806985B (en) | Self-driven device for simultaneously detecting respiratory flow and humidity and preparation method thereof | |
| CN109567808B (en) | Self-powered respiratory gas sensor array and preparation method thereof | |
| CN109030593B (en) | Novel needle cylinder type integrated self-powered gas sensor and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |