CN104779831B - Displacement transducer based on friction generator - Google Patents
Displacement transducer based on friction generator Download PDFInfo
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- CN104779831B CN104779831B CN201510086372.5A CN201510086372A CN104779831B CN 104779831 B CN104779831 B CN 104779831B CN 201510086372 A CN201510086372 A CN 201510086372A CN 104779831 B CN104779831 B CN 104779831B
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Abstract
The invention discloses a kind of displacement transducer based on friction generator, including：Shield shell, limits chamber unlimited up and down inside it；Lower cover, its lower end for being located at shield shell；Crushing block, is arranged on the upper surface of lower cover after its deformation of generation first；Bearing plate, the center of its upper surface has the backup rolls being vertically arranged, and bearing plate is located at the upper surface of crushing block；Triboelectricity component, it is made up of Power Generation Section, the first insulating part and the second insulating part, Power Generation Section is made up of the first triboelectricity portion and the second triboelectricity portion, first triboelectricity portion and the second triboelectricity portion be squeezed block first deformation produce elastic force extruding contact so that form frictional interface between two relative surfaces；Upper cover plate, its upper end for being located at shield shell, when backup rolls are subject to external force, bearing plate occurs second and deforms along Impact direction movement extruding crushing block, the surface that the first triboelectricity portion and the second triboelectricity portion contact with each other is produced electric charge when separating.
Description
Technical field
The invention belongs to technical field of generators, specifically, the present invention relates to a kind of displacement based on friction generator
Sensor.
Background technology
Displacement transducer is also called linear transducer, is the sensor for displacement being converted to electricity, including capacitive displacement
Sensor, optical displacement sensor, ultrasonic type displacement transducer, Hall displacement transducer.In this transfer process
Having many physical quantitys (such as pressure, flow, acceleration etc.) usually needs first to be transformed to displacement, then again by shift transformation into electricity
Amount.Therefore displacement transducer is the important pedestal sensor of a class.
But, the above-mentioned various displacement transducers for referring to undoubtedly all need electric energy to supply, it is impossible to the transmission electricity of enough actives
On the one hand amount signal limits the use environment and scope of sensor to a certain extent to process chip, on the other hand increases
The consumption of the energy, is a kind of device not environmentally.
Therefore it is badly in need of displacement transducer that is a kind of passive and can adapt to various use environments at present.
The content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.Therefore, of the invention
One purpose is to propose a kind of displacement transducer based on friction generator, and the displacement transducer that should be based on friction generator can
For the detection of displacement, speed, acceleration and mechanics, and the energy need not be additionally provided.
In one aspect of the invention, the present invention proposes a kind of displacement transducer based on friction generator, including：
Shield shell, the inside of shield casings limits chamber unlimited up and down；
Lower cover, the lower cover is located at the lower end of the shield shell and is suitable to sealingly close the lower ending opening of the chamber；
Crushing block, the crushing block is arranged in the chamber and positioned at the upper table of the lower cover after there is the first deformation
Face；
Bearing plate, the center of the bearing plate upper surface has the backup rolls being vertically arranged, and the bearing plate is movably
It is arranged in the chamber and positioned at the upper surface of the crushing block；
Triboelectricity component, the triboelectricity component is located at the Power Generation Section upper surface by Power Generation Section and respectively with
First insulating part on surface and the second insulating part are constituted, and the triboelectricity component is located in the chamber and is set in described holding
On last item, the Power Generation Section is made up of the first triboelectricity portion and the second triboelectricity portion, the first triboelectricity portion and
There is the elastic force produced after first deformation and extrude contact in two triboelectricity portions so that described first rubs by the crushing block
Wipe and form frictional interface between Power Generation Section and two relative surfaces of the second triboelectricity portion；And
Upper cover plate, the upper cover plate is located at the upper end of the shield shell and is set on the backup rolls, is suitable to sealingly close
The upper end open of the chamber,
When being subject to external force on the backup rolls, the bearing plate occurs second along the Impact direction movement extruding crushing block
Deformation, and then make the surface that the first triboelectricity portion and the second triboelectricity portion contact with each other that electricity is produced when separating
Lotus.
Displacement transducer based on friction generator according to embodiments of the present invention is by using the crushing block with deformation
So that the first triboelectricity portion and the second triboelectricity portion of Power Generation Section mutually extrude contact in triboelectricity component, and work as pressure-bearing
Axle be subject to external force when, crushing block is deformed upon again, and drive bearing plate make the second triboelectricity portion away from first friction hair
Electric portion, the surface that the first triboelectricity portion and the second triboelectricity portion contact with each other during being somebody's turn to do produces electricity in time of releasing friction
Lotus, wherein, positive charge concentrates on the first triboelectricity portion, and negative electrical charge concentrates on the second triboelectricity portion, and (or positive charge is concentrated on
Second triboelectricity portion, negative electrical charge concentrate on the first Power Generation Section) so that the first triboelectricity portion and the second triboelectricity portion
Between exist electrical potential difference or the first triboelectricity portion and the second triboelectricity portion any one with zero potential object (such as shielding case
Body) between there is electrical potential difference, output voltage then can be measured by corresponding measuring apparatus (such as electrostatic voltmeter).
The advantage of the displacement transducer based on friction generator that the present invention is provided is, there is provided one kind does not need the energy
And can actively launch the sensor component of electrical signal, the scope of application wider array of feature is had while energy saving.
In addition, the displacement transducer based on friction generator according to the above embodiment of the present invention can also be with following attached
Plus technical characteristic：
In some embodiments of the invention, the first triboelectricity portion is fixedly connected on described by the first insulating part
The lower surface of upper cover plate, the second triboelectricity portion is fixedly connected on the upper surface of the bearing plate by the second insulating part.
Thus, it is possible to be prevented effectively from the leakage of electric charge.
In some embodiments of the invention, first insulating part includes the first insulating barrier for being laminated from top to bottom and the
One insulating washer, second insulating part includes the second insulating washer and the second insulating barrier that are laminated from top to bottom.Thus, it is possible to
Further it is prevented effectively from the leakage of electric charge.
In some embodiments of the invention, the shield shell, lower cover and upper cover plate by metal or containing metal and
Nonmetallic composite composition.Thus, it is possible to electrostatic screen space is effectively formed, so as to ensure Power Generation Section not by extraneous telecommunications
Number interference.
In some embodiments of the invention, the first triboelectricity portion is made up of first electrode, second friction
Power Generation Section is made up of the first friction member.
In some embodiments of the invention, the second triboelectricity portion further includes second electrode, described second
Electrode is arranged on the lower surface of first friction member.
In some embodiments of the invention, the first triboelectricity portion further includes the second friction member, described
Two friction members are arranged on the lower surface of the first electrode.
In some embodiments of the invention, the first triboelectricity portion further includes the second friction member, described
Two triboelectricity portions further include second electrode, and second friction member is arranged on the lower surface of the first electrode, described
Second electrode is arranged on the lower surface of first friction member.
In some embodiments of the invention, the first electrode and the shield shell are based on friction generator for described
Displacement transducer signal output part.
In some embodiments of the invention, the first electrode is based on friction generator with the second electrode for described
Displacement transducer signal output part.
Additional aspect of the invention and advantage will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by practice of the invention.
Brief description of the drawings
Fig. 1 is that the structural blast of the displacement transducer based on friction generator according to an embodiment of the invention is illustrated
Figure；
Fig. 2 is the triboelectricity component in the displacement transducer based on friction generator according to an embodiment of the invention
Structural representation；
Fig. 3 is the structure of the Power Generation Section in the displacement transducer based on friction generator according to an embodiment of the invention
Schematic diagram；
Fig. 4 is the knot of the Power Generation Section in the displacement transducer based on friction generator according to another embodiment of the invention
Structure schematic diagram；
Fig. 5 is the knot of the Power Generation Section in the displacement transducer based on friction generator according to further embodiment of the present invention
Structure schematic diagram；
Fig. 6 is the knot of the Power Generation Section in the displacement transducer based on friction generator according to further embodiment of the present invention
Structure schematic diagram；
Fig. 7 is that the bearing plate in the displacement transducer based on friction generator according to an embodiment of the invention does not receive outer
Cross-sectional view during power；
Fig. 8 is that the bearing plate in the displacement transducer based on friction generator according to an embodiment of the invention receives external force
When cross-sectional view；
Fig. 9 is the voltage-position obtained by the displacement transducer based on friction generator using one embodiment of the invention
Move collection of illustrative plates.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
It is exemplary to scheme the embodiment of description, it is intended to for explaining the present invention, and be not considered as limiting the invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outward ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or
Position relationship, is for only for ease of the description present invention and simplifies description, must rather than the device or element for indicating or imply meaning
With specific orientation, with specific azimuth configuration and operation, therefore must be not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include at least one this feature.In the description of the invention, " multiple " is meant that at least two, such as two, three
It is individual etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integrally；Can be that machinery connects
Connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be in two elements
The connection in portion or two interaction relationships of element, unless otherwise clearly restriction.For one of ordinary skill in the art
For, can as the case may be understand above-mentioned term concrete meaning in the present invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be with
It is the first and second feature directly contacts, or the first and second features are by intermediary mediate contact.And, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height less than second feature.
In one aspect of the invention, the present invention proposes a kind of displacement transducer based on friction generator.Join below
The displacement transducer based on friction generator for examining Fig. 1-9 pairs of embodiment of the present invention is described in detail.Reality of the invention
Example is applied, the displacement transducer that should be based on friction generator includes：
Shield shell 100：Embodiments in accordance with the present invention, limit chamber 10 unlimited up and down inside shield shell 100.
Embodiments in accordance with the present invention, shield shell 100 by metal or can contain metal and nonmetallic composite
Composition.Specifically, when shield shell material is metal, metal material can simultaneously play support and electric signal function of shielding；
When shield shell material be containing metal and during nonmetallic composite, nonmetallic materials as shield shell support knot
Structure, metal material is coated on extexine or the endosexine of nonmetallic materials, plays electric signal shielding action.
Lower cover 200：Embodiments in accordance with the present invention, lower cover 200 may be located at the lower end of shield shell 100 and be suitable to
The lower ending opening of closed chamber 10.It should be noted that " lower cover is suitable to sealingly close the lower ending opening of chamber " herein can be with
Being interpreted as lower cover can be completely covered the lower ending opening of chamber and can be fixedly connected with the lower end of shield shell 100.
Embodiments in accordance with the present invention, the material of lower cover 200 is identical with the selection of shield shell 100.
Crushing block 300：Embodiments in accordance with the present invention, crushing block 300 occur to be arranged in chamber 10 after the first deformation and
Positioned at the upper surface of lower cover 200, according to a particular embodiment of the invention, the lower surface of crushing block 300 is upper with lower cover 200
Surface can be fixedly connected by bonding or other mechanical connection manners, and at the beginning of the displacement transducer based on friction generator
Under beginning state, the first deformation of crushing block 300 is remained.
According to a particular embodiment of the invention, crushing block 300 can be with elastic deformation and recoverable elastomer, example
Can such as be closed to there is one-to-one function between rubber, plastics and spring, and the deformation quantity and stress of crushing block 300
System.
Bearing plate 400：Embodiments in accordance with the present invention, the center of the upper surface of bearing plate 400 has the pressure-bearing being vertically arranged
Axle 41, according to a particular embodiment of the invention, bearing plate 400 is movably disposed in chamber 10 and positioned at crushing block 300
Upper surface, and the moving direction of bearing plate 400 is limited on the depth bearing of trend of chamber 10.
Embodiments in accordance with the present invention, bearing plate 400 is wholely set with backup rolls 41, its material be with it is certain rigidity and
The material of support function can be played.
Triboelectricity component 500：Embodiments in accordance with the present invention, triboelectricity component 500 is by Power Generation Section 51 and difference position
Constituted (as shown in Figure 2) in first insulating part 52 and the second insulating part 53 of the upper and lower surface of Power Generation Section 51.
Embodiments in accordance with the present invention, triboelectricity component 500 is located in chamber 10 and is set on backup rolls 41, specifically
, the center of triboelectricity component 500 has through hole, and backup rolls 41 run through the through hole.
Embodiments in accordance with the present invention, Power Generation Section 51 is made up of the first triboelectricity portion 54 and the second triboelectricity portion 55,
According to a particular embodiment of the invention, the second triboelectricity portion 55 is fixed on bearing plate 400 by the second insulating part 53, and first
Triboelectricity portion 54 is fixed on upper cover plate 600 by the first insulating part 52.
Embodiments in accordance with the present invention, the first triboelectricity portion 54 and the second triboelectricity portion 55 block 300 that is squeezed occur
First deformation after produce elastic force and extrude contact so that the first triboelectricity portion 54 and the second triboelectricity portion 55 are relative
Two surfaces between form frictional interface.
Upper cover plate 600：Embodiments in accordance with the present invention, upper cover plate 600 is located at the upper end of shield shell 100 and is set in and holds
On last item 41, the upper end open of chamber 10 is suitable to sealingly close.It is to be understood that herein, " upper cover plate is suitable to sealingly close chamber
Upper end open " can be understood as upper cover plate can be completely covered the upper end open of chamber and can be fixed with the upper end of shield shell
Connection.Specifically, the center of upper cover plate has through hole, the backup rolls 41 on bearing plate 400 run through the through hole, and backup rolls 41
Upper end be higher than upper cover plate 600.
Embodiments in accordance with the present invention, the material of upper cover plate 600 is identical with the selection of shield shell 100.
Embodiments in accordance with the present invention, closing sky is formed being combined by upper cover plate 600, shield shell 100 and lower cover 200
In chamber, the first triboelectricity portion 54 and the second triboelectricity portion 55 be squeezed block 300 there is the elastic force produced after the first deformation and
Extruding contact.Specifically, under the elastic force effect produced after crushing block is deformed upon, the first triboelectricity portion and the second friction are sent out
The surface extruding contact in electric portion, so as to ensure that the two has larger contact area, when backup rolls stress, bearing plate stress is moved
It is dynamic, by the extruding of bearing plate and lower cover, make crushing block deform and bearing plate drive the second triboelectricity portion away from
First triboelectricity portion, during being somebody's turn to do, the surface time of releasing that the first triboelectricity portion and the second triboelectricity portion contact with each other
Produce electric charge.
Embodiments in accordance with the present invention, the first insulating part 52 includes that the first insulating barrier 56 and first being laminated from top to bottom is exhausted
Edge packing ring 57.Thus, it is possible to be prevented effectively from the leakage of the electric charge that the first triboelectricity portion and the friction of the second triboelectricity portion are produced.
According to this embodiments of the invention, the second insulating part 53 includes the second insulating washer 58 being laminated from top to bottom and the
Two insulating barriers 59.Thus, it is possible to further be prevented effectively from the electricity that the first triboelectricity portion and the friction of the second triboelectricity portion are produced
The leakage of lotus.
Specifically, Power Generation Section can use following combining form according to different needs：
As shown in figure 3, the first triboelectricity portion 54 is made up of first electrode 541, the second triboelectricity portion 55 is rubbed by first
Part 551 is wiped to constitute；In this kind of sensor of structure Power Generation Section, first electrode 541 and shield shell 100 can be as sensors
Signal output part.The advantage of the Power Generation Section of this kind of structure is simple structure, but it is relatively weak to there is output voltage signal
Problem.
As shown in figure 4, on architecture basics shown in Fig. 3, the second triboelectricity portion further increases second electrode 552,
Second electrode 552 is arranged on the lower surface of the first friction member 551, i.e. the second triboelectricity portion 55 and is rubbed by be stacked first
Part 551 and second electrode 552 are constituted；In this kind of sensor of structure, first electrode 541 and second electrode 552 are used as sensing
The signal output part of device.The advantage of the Power Generation Section of this kind of structure is relatively large output voltage signal.
As shown in figure 5, on architecture basics shown in Fig. 3, the first triboelectricity portion further increases the second friction member
542, the second friction member 542 is arranged on the lower surface of first electrode 541, i.e. the first triboelectricity portion 54 by be stacked
One electrode 541 and the second friction member 542 are constituted；In this kind of sensor of structure, first electrode 541 and shield shell 100 are made
It is the signal output part of sensor.Using friction member and friction member friction, advantage is output voltage letter for the Power Generation Section of this kind of structure
Number relatively large, preferably the first friction member and the second friction member select different materials.
As shown in fig. 6, on architecture basics shown in Fig. 3, the second triboelectricity portion further increases second electrode 552,
First triboelectricity portion further increases the second friction member 542, wherein, second electrode 552 is arranged on the first friction member 551
Lower surface, the second friction member 542 is arranged on the lower surface of first electrode 541, i.e., the second triboelectricity portion 55 is by being stacked
The first friction member 551 and second electrode 552 constitute, the first triboelectricity portion 54 is by the first electrode 541 being stacked and
Two friction members 542 are constituted；In this kind of sensor of structure, first electrode 541 and second electrode 552 as sensor signal
Output end.Using friction member and friction member friction, advantage is relatively bigger output voltage signal, preferably for the Power Generation Section of this kind of structure
First friction member and the second friction member select different materials.
Embodiments in accordance with the present invention, the first friction member and the second friction member material can be respectively selected from for polyamides is sub-
Amine, aniline-formaldehyde resin, polyformaldehyde, ethyl cellulose, polyamide, melamino-formaldehyde, polyethylene glycol succinate, fiber
It is element, cellulose ethanoate, polyethylene glycol adipate, polydiallyl phthalate, cellulose sponge, renewable sponge, poly-
Urethane elastomer, styrene-acrylonitrile copolymer copolymer, styrene-butadiene-copolymer, staple fibre, poly- methyl, methacrylate,
Polyvinyl alcohol, polyester, polyisobutene, polyurethane flexible sponge, polyethylene terephthalate, polyvinyl butyral resin, first
Aldehyde phenol, neoprene, butadiene-propylene copolymer, natural rubber, polyacrylonitrile, acrylonitrile vinyl chloride and the diphenol of polyethylene third
At least one in carbonate.
Embodiments in accordance with the present invention, first electrode and second electrode material be respectively selected from indium tin oxide, Graphene,
Nano silver wire film, Au Ag Pt Pd, aluminium, nickel, copper, titanium, chromium, tin, iron, manganese, molybdenum, tungsten, vanadium, aluminium alloy, titanium alloy, magnesium alloy,
Beryllium alloy, copper alloy, kirsite, manganese alloy, nickel alloy, metal, tin alloy, cadmium alloy, bismuth alloy, indium alloy, gallium alloy,
At least one in tungsten alloy, molybdenum alloy, niobium alloy and tantalum alloy.
Below with reference to the work shape of the displacement transducer that friction generator is based on before Fig. 7-8 pairs of bearing plate stress and after stress
State is described.
Fig. 7 is state of the bearing plate by the displacement transducer based on friction generator before backup rolls stress, based on friction
The displacement transducer of generator include shield shell 100, the upper cover plate 600 for the chamber upper end open of lock shield housing 100,
For the lower cover 200 of the chamber lower ending opening of lock shield housing 100, and (the bag of triboelectricity component 500 in chamber 10
The first insulating part 52, the first triboelectricity portion 54, the second triboelectricity portion 55 and the second insulating part 53 for setting from top to bottom are included,
Wherein, the first triboelectricity portion and the second triboelectricity portion constitute by electrode and/or friction member), bearing plate 400 and extruding
Block 300.Now, crushing block bearing plate and lower cover extruding under keep the first deformation and so that triboelectricity component in first
Triboelectricity portion and the second triboelectricity portion contact with each other, and ensure that the two has certain contact area.
Fig. 8 is the state of bearing plate displacement transducer based on friction generator after backup rolls are subject to external force to act on,
As seen from the figure, during backup rolls stress so that crushing block occurs the second deformation under the pressure of bearing plate and lower cover, while pressure-bearing
The dynamic second triboelectricity portion of strip is with the first triboelectricity part from during being somebody's turn to do, the first triboelectricity portion and the second friction are sent out
The time of releasing friction on the surface that electric portion contacts with each other produces electric charge, and is rubbed by the first triboelectricity portion and/or second respectively
Wipe Power Generation Section on electrode collected by, electrical potential difference is then produced between two triboelectricity portions, then using static voltmeter or its
Voltage between his electrostatic potential testing equipment can measure two electrodes or between one of electrode and shielding shell, as base
Voltage produced by displacement transducer in friction generator, then according between the first triboelectricity portion and the second triboelectricity portion
Spacing X (t) and the functional relation of measured voltage V be that can obtain the functional relation on X (t) as shown in Equation 1,
X (t)=KV formulas 1
Wherein, K is a fixed coefficient.
Thus, the further timing when backup rolls start stress, can obtain to the functional relation of formula 1 on time t differential
To velocity function v (t) relational expression, acceleration function a (t) relation is obtained on time t differential to velocity function v (t) relational expression
Formula, the then functional relation of the deformation according to crushing block, you can obtain suffered external forceFunctional relation.
Specifically, by taking the displacement transducer based on friction generator of the invention as an example, being controlled by stepper motor slide unit
The distance between first triboelectricity portion and the second triboelectricity portion, and using static voltmeter (KEITHLEY Model 6514
System Electromer) determine the voltage that the displacement transducer based on friction generator is produced.
Experimental procedure：In the displacement transducer based on friction generator being close to first is set to rub using stepper motor slide unit
The distance for wiping Power Generation Section and the second triboelectricity portion increases 0.5mm every time, is then returned with 0.5mm/ motion again, and period utilizes
Static voltmeter measures the magnitude of voltage of each fixed point displacement, and the displacement voltage curve map for obtaining is as shown in Figure 9.As seen from the figure, voltage
It is in good linear relationship with displacement, is then the relational expression that can obtain voltage and displacement according to Fig. 9, then basis measures voltage
Can just obtain based on friction generator displacement transducer inside the first triboelectricity portion and the second triboelectricity portion between away from
From.
According in academic journal《Energy and environment science》The paper delivered《Theoretical study of
contact-mode triboelectric nanogenerators as an effective power source》
(ENERGY&ENVIRONMENTAL SCIENCE,2013；6(12):3576) experiment (such as Fig. 9) of record and inventor in can
Know, above-mentioned output voltage and the spacing between the first triboelectricity portion and the second triboelectricity portion are present correspondingly linearly
Relation, obtains corresponding displacement function relation, realizes the process that change in displacement is converted to output voltage change, i.e. displacement and passes
The function of sensor, while being calculated by corresponding function, can also obtain the functions such as acceleration, speed, pressure.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the invention or example.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be with office
Combined in an appropriate manner in one or more embodiments or example.Additionally, in the case of not conflicting, the skill of this area
Art personnel can be tied the feature of the different embodiments or example described in this specification and different embodiments or example
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (10)
1. a kind of displacement transducer based on friction generator, it is characterised in that including：
Shield shell, the inside of shield casings limits chamber unlimited up and down；
Lower cover, the lower cover is located at the lower end of the shield shell and is suitable to sealingly close the lower ending opening of the chamber；
Crushing block, the crushing block is arranged in the chamber and positioned at the upper surface of the lower cover after there is the first deformation；
Bearing plate, the center of the bearing plate upper surface has the backup rolls being vertically arranged, and the bearing plate is movably disposed
In the chamber and positioned at the upper surface of the crushing block；
Triboelectricity component, the triboelectricity component is located at the Power Generation Section upper and lower surface by Power Generation Section and respectively
The first insulating part and the second insulating part composition, the triboelectricity component is located in the chamber and is set in the backup rolls
On, the Power Generation Section is made up of the first triboelectricity portion and the second triboelectricity portion, and the first triboelectricity portion and second rubs
Wipe Power Generation Section the elastic force produced after first deformation is occurred by the crushing block and contact is extruded so that the first friction hair
Electric portion and the second triboelectricity portion form frictional interface between two relative surfaces；And
Upper cover plate, the upper cover plate is located at the upper end of the shield shell and is set on the backup rolls, is suitable to sealingly close described
The upper end open of chamber,
When being subject to external force on the backup rolls, the bearing plate occurs second and becomes along the Impact direction movement extruding crushing block
Shape, and then make the surface that the first triboelectricity portion and the second triboelectricity portion contact with each other that electricity is produced when separating
Lotus,
The first triboelectricity portion is fixedly connected on the lower surface of the upper cover plate, second friction by the first insulating part
Power Generation Section is fixedly connected on the upper surface of the bearing plate by the second insulating part.
2. the displacement transducer based on friction generator according to claim 1, it is characterised in that first insulating part
Including the first insulating barrier and the first insulating washer that are laminated from top to bottom, second insulating part includes be laminated from top to bottom the
Two insulating washers and the second insulating barrier.
3. the displacement transducer based on friction generator according to claim 1, it is characterised in that the shield shell,
Lower cover and upper cover plate are constituted by metal or containing metal and nonmetallic composite.
4. the displacement transducer based on friction generator according to claim any one of 1-3, it is characterised in that described
One triboelectricity portion is made up of first electrode, and the second triboelectricity portion is made up of the first friction member.
5. the displacement transducer based on friction generator according to claim 4, it is characterised in that the second friction hair
Electric portion further includes second electrode, and the second electrode is arranged on the lower surface of first friction member.
6. the displacement transducer based on friction generator according to claim 4, it is characterised in that the first friction hair
Electric portion further includes the second friction member, and second friction member is arranged on the lower surface of the first electrode.
7. the displacement transducer based on friction generator according to claim 4, it is characterised in that the first friction hair
Electric portion further includes the second friction member, and the second triboelectricity portion further includes second electrode, second friction member
The lower surface of the first electrode is arranged on, the second electrode is arranged on the lower surface of first friction member.
8. the displacement transducer based on friction generator according to claim 4, it is characterised in that the first electrode and
The shield shell is the signal output part of the displacement transducer based on friction generator.
9. the displacement transducer based on friction generator according to claim 6, it is characterised in that the first electrode and
The shield shell is the signal output part of the displacement transducer based on friction generator.
10. the displacement transducer based on friction generator according to claim 5 or 7, it is characterised in that first electricity
Pole and the signal output part that the second electrode is the displacement transducer based on friction generator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510086372.5A CN104779831B (en) | 2015-02-16 | 2015-02-16 | Displacement transducer based on friction generator |
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| CN201510086372.5A CN104779831B (en) | 2015-02-16 | 2015-02-16 | Displacement transducer based on friction generator |
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| CN104779831B true CN104779831B (en) | 2017-06-06 |
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