CN104779831A - Displacement sensor based on friction electric generator - Google Patents
Displacement sensor based on friction electric generator Download PDFInfo
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- CN104779831A CN104779831A CN201510086372.5A CN201510086372A CN104779831A CN 104779831 A CN104779831 A CN 104779831A CN 201510086372 A CN201510086372 A CN 201510086372A CN 104779831 A CN104779831 A CN 104779831A
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Abstract
The invention discloses a displacement sensor based on a friction electric generator. The displacement sensor comprises a shielding casing, a lower cover plate which is positioned at the lower end of the shielding casing, an extruding block, a pressure bearing plate, a friction electric generating component and an upper cover plate, wherein the inner part of the shielding casing limits a chamber of which the top and the bottom are open; after primary deformation, the extruding block is arranged on the upper surface of the lower cover plate; a pressure bearing shaft which is vertically arranged is arranged in the center of the upper surface of the pressure bearing plate, and the pressure bearing plate is positioned on the upper surface of the extruding block; the friction electric generating component consists of an electric generating part, a first insulation element and a second insulation element, wherein the electric generating part consists of a first friction electric generating part and a second friction electric generating part, and the first friction electric generating part and the second friction electric generating part are extruded in a contact manner by elastic force generated by the extruding block during primary deformation, so that a frictional interface is formed between the two opposite surfaces; the upper cover plate is positioned at the upper end of the shielding casing, and when the pressure bearing shaft bears external force, the pressure bearing plate moves along the stress direction so as to extrude the extruding block to generate secondary deformation, so that the contact surface of the first friction electric generating part and the second friction electric generating part generates charges during separation.
Description
Technical field
The invention belongs to technical field of generators, specifically, the present invention relates to a kind of displacement transducer based on friction generator.
Background technology
Displacement transducer is also called linear transducer, is transducer displacement being converted to electricity, comprises capacitive displacement transducer, optical displacement sensor, ultrasonic type displacement transducer, Hall displacement transducer.In this transfer process, there are many physical quantitys (such as pressure, flow, acceleration etc.) usually to need first to be transformed to displacement, and then shift transformation is become electricity.Therefore displacement transducer is the important pedestal sensor of a class.
But, the above-mentioned various displacement transducers mentioned all need electric power supply undoubtedly, can not transmission electric quantity signal initiatively to process chip, limit environment for use and the scope of transducer on the one hand to a certain extent, adding the consumption of the energy on the other hand, is a kind of device not environmentally.
Therefore be badly in need of at present a kind of passive and the displacement transducer of various environment for use can be adapted to.
Summary of the invention
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, one object of the present invention is to propose a kind of displacement transducer based on friction generator, should may be used for the detection of displacement, speed, acceleration and mechanics, and do not need additionally to provide the energy based on displacement transducer of friction generator.
In one aspect of the invention, the present invention proposes a kind of displacement transducer based on friction generator, comprising:
Shield shell, described inside of shield casings limits the chamber opened wide up and down;
Lower cover, described lower cover is positioned at the lower end of described shield shell and is suitable for the lower ending opening of closed described chamber;
Crushing block, described crushing block to be arranged on after there is the first distortion in described chamber and to be positioned at the upper surface of described lower cover;
Bearing plate, the center of described bearing plate upper surface has the backup rolls vertically arranged, and described bearing plate to be arranged on movably in described chamber and to be positioned at the upper surface of described crushing block;
Triboelectricity assembly, described triboelectricity assembly is by Power Generation Section and lay respectively at the first insulating part of described Power Generation Section upper surface and lower surface and the second insulating part forms, described triboelectricity assembly is positioned at described chamber and is set on described backup rolls, described Power Generation Section is made up of the first triboelectricity portion and the second triboelectricity portion, described first triboelectricity portion and the second triboelectricity portion extrude by the elastic force produced after described first distortion of described crushing block generation and contact, frictional interface is formed between two surfaces making described first triboelectricity portion relative with the second triboelectricity portion, and
Upper cover plate, described upper cover plate is positioned at the upper end of described shield shell and is set on described backup rolls, is suitable for the upper end open of closed described chamber,
When described backup rolls is subject to external force, described bearing plate moves the described crushing block of extruding along Impact direction and the second distortion occurs, and then the surface that described first triboelectricity portion and described second triboelectricity portion are contacted with each other produces electric charge when being separated.
Contact by adopting the crushing block with deformation to make the first triboelectricity portion of Power Generation Section in triboelectricity assembly mutually to extrude with the second triboelectricity portion according to the displacement transducer based on friction generator of the embodiment of the present invention, and when backup rolls is subject to external force, again there is deformation in crushing block, and drive bearing plate to make the second triboelectricity portion away from the first triboelectricity portion, the surface that in this process, the first triboelectricity portion and the second triboelectricity portion contact with each other produces electric charge in time of releasing friction, wherein, positive charge concentrates on the first triboelectricity portion, negative electrical charge concentrates on the second triboelectricity portion, and (or positive charge concentrates on the second triboelectricity portion, negative electrical charge concentrates on the first Power Generation Section), thus make to exist between the first triboelectricity portion and the second triboelectricity portion electrical potential difference or the first triboelectricity portion and the second triboelectricity portion there is electrical potential difference between any one and zero potential object (as shield shell), then output voltage can be recorded by corresponding measuring equipment (as electrostatic voltmeter).
The advantage of the displacement transducer based on friction generator provided by the invention is, providing a kind ofly does not need the energy and initiatively can launch the sensor component of electrical signal, has the feature that the scope of application is wider while energy savings.
In addition, the displacement transducer based on friction generator according to the above embodiment of the present invention can also have following additional technical characteristic:
In some embodiments of the invention, described first triboelectricity portion is fixedly connected on the lower surface of described upper cover plate by the first insulating part, and described second triboelectricity portion is fixedly connected on the upper surface of described bearing plate by the second insulating part.Thus, the leakage of electric charge can effectively be avoided.
In some embodiments of the invention, described first insulating part comprises the first stacked from top to bottom insulating barrier and the first insulating washer, and described second insulating part comprises the second stacked from top to bottom insulating washer and the second insulating barrier.Thus, the leakage of electric charge can effectively be avoided further.
In some embodiments of the invention, described shield shell, lower cover and upper cover plate form by metal or containing metal and nonmetallic composite material.Thus, can effectively form electrostatic screen space, thus ensure that Power Generation Section is not disturbed by the extraneous signal of telecommunication.
In some embodiments of the invention, described first triboelectricity portion is made up of the first electrode, and described second triboelectricity portion is made up of the first friction member.
In some embodiments of the invention, described second triboelectricity portion comprises the second electrode further, and described second electrode is arranged on the lower surface of described first friction member.
In some embodiments of the invention, described first triboelectricity portion comprises the second friction member further, and described second friction member is arranged on the lower surface of described first electrode.
In some embodiments of the invention, described first triboelectricity portion comprises the second friction member further, described second triboelectricity portion comprises the second electrode further, described second friction member is arranged on the lower surface of described first electrode, and described second electrode is arranged on the lower surface of described first friction member.
In some embodiments of the invention, described first electrode and described shield shell are the described signal output part based on the displacement transducer of friction generator.
In some embodiments of the invention, described first electrode and described second electrode are the described signal output part based on the displacement transducer of friction generator.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Fig. 1 is according to an embodiment of the invention based on the structural blast schematic diagram of the displacement transducer of friction generator;
Fig. 2 is according to an embodiment of the invention based on the structural representation of the triboelectricity assembly in the displacement transducer of friction generator;
Fig. 3 is according to an embodiment of the invention based on the structural representation of the Power Generation Section in the displacement transducer of friction generator;
Fig. 4 is the structural representation based on the Power Generation Section in the displacement transducer of friction generator according to another embodiment of the present invention;
Fig. 5 is the structural representation based on the Power Generation Section in the displacement transducer of friction generator according to another embodiment of the present invention;
Fig. 6 is the structural representation based on the Power Generation Section in the displacement transducer of friction generator according to another embodiment of the present invention;
Fig. 7 be according to an embodiment of the invention based on the bearing plate in the displacement transducer of friction generator by external force time cross-sectional view;
Fig. 8 be according to an embodiment of the invention based on the bearing plate in the displacement transducer of friction generator by external force time cross-sectional view;
Fig. 9 is the voltage-displacement collection of illustrative plates adopting the displacement transducer based on friction generator of one embodiment of the invention to obtain.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In describing the invention, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary indirect contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In one aspect of the invention, the present invention proposes a kind of displacement transducer based on friction generator.The displacement transducer based on friction generator below with reference to Fig. 1-9 pairs of embodiment of the present invention is described in detail.According to embodiments of the invention, should comprise based on the displacement transducer of friction generator:
Shield shell 100: according to embodiments of the invention, shield shell 100 inside limits the chamber 10 opened wide up and down.
According to embodiments of the invention, shield shell 100 can form by metal or containing metal and nonmetallic composite material.Concrete, when shield shell material is metal, metal material can play support and signal of telecommunication function of shielding simultaneously; When shield shell material is for during containing metal and nonmetallic composite material, nonmetallic materials are as the supporting construction of shield shell, and metal material is coated on extexine or the endosexine of nonmetallic materials, play signal of telecommunication shielding action.
Lower cover 200: according to embodiments of the invention, lower cover 200 can be positioned at the lower end of shield shell 100 and be suitable for the lower ending opening of closed chamber 10.It should be noted that, " lower cover is suitable for the lower ending opening of closed chamber " herein can be understood as lower cover and can cover the lower ending opening of chamber completely and can be fixedly connected with the lower end of shield shell 100.
According to embodiments of the invention, the material of lower cover 200 is identical with the selection of shield shell 100.
Crushing block 300: according to embodiments of the invention, crushing block 300 to be arranged on after there is the first deformation in chamber 10 and to be positioned at the upper surface of lower cover 200, according to a particular embodiment of the invention, the lower surface of crushing block 300 can be fixedly connected with by bonding or other mechanical connection manners with the upper surface of lower cover 200, and based under the displacement transducer initial condition of friction generator, the first deformation of crushing block 300 remains.
According to a particular embodiment of the invention, crushing block 300 can for having elastic deformation and recoverable elastomer, such as, can be rubber, plastics and spring etc., and the deformation quantity of crushing block 300 and stressed between there is functional relation one to one.
Bearing plate 400: according to embodiments of the invention, the center of bearing plate 400 upper surface has the backup rolls 41 vertically arranged, according to a particular embodiment of the invention, bearing plate 400 to be movably arranged in chamber 10 and to be positioned at the upper surface of crushing block 300, and the moving direction of bearing plate 400 is limited on the degree of depth bearing of trend of chamber 10.
According to embodiments of the invention, bearing plate 400 and backup rolls 41 are wholely set, and its material is the material having certain rigidity and can play support function.
Triboelectricity assembly 500: according to embodiments of the invention, triboelectricity assembly 500 is made up of (as shown in Figure 2) Power Generation Section 51 and the first insulating part 52 and the second insulating part 53 laying respectively at Power Generation Section 51 upper surface and lower surface.
According to embodiments of the invention, triboelectricity assembly 500 is positioned at chamber 10 and is set on backup rolls 41, and concrete, the center of triboelectricity assembly 500 has through hole, and backup rolls 41 runs through this through hole.
According to embodiments of the 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, second triboelectricity portion 55 is fixed on bearing plate 400 by the second insulating part 53, and the first triboelectricity portion 54 is fixed on upper cover plate 600 by the first insulating part 52.
According to embodiments of the invention, there is elastic force that the first distortion produces afterwards and extrude to contact in the first triboelectricity portion 54 and the second triboelectricity portion 55 block 300 that is squeezed, thus makes to form frictional interface between two surfaces relative with the second triboelectricity portion 55, the first triboelectricity portion 54.
Upper cover plate 600: according to embodiments of the invention, upper cover plate 600 is positioned at the upper end of shield shell 100 and is set on backup rolls 41, is suitable for the upper end open of closed chamber 10.The upper end open of chamber can be covered completely it is to be understood that " upper cover plate is suitable for the upper end open of closed chamber " herein can be understood as upper cover plate and can be fixedly connected with the upper end of shield shell.Concrete, the center of upper cover plate has through hole, and the backup rolls 41 on bearing plate 400 runs through this through hole, and the upper end of backup rolls 41 is higher than upper cover plate 600.
According to embodiments of the invention, the material of upper cover plate 600 is identical with the selection of shield shell 100.
According to embodiments of the invention, being combined to form in enclosed cavity by upper cover plate 600, shield shell 100 and lower cover 200, there is elastic force that the first distortion produces afterwards and extrude to contact in the first triboelectricity portion 54 and the second triboelectricity portion 55 block 300 that is squeezed.Concrete, under the elastic force effect produced after crushing block generation deformation, first triboelectricity portion contacts with the surface extruding in the second triboelectricity portion, thus both ensureing, there is larger contact area, when backup rolls is stressed, the stressed movement of bearing plate, by the extruding of bearing plate and lower cover, crushing block is deformed and bearing plate drives the second triboelectricity portion away from the first triboelectricity portion, in this process, the surperficial time of releasing that the first triboelectricity portion and the second triboelectricity portion contact with each other produces electric charge.
According to embodiments of the invention, the first insulating part 52 comprises the first stacked from top to bottom insulating barrier 56 and the first insulating washer 57.Thus, the leakage of the first triboelectricity portion and the second fricative electric charge in triboelectricity portion can effectively be avoided.
According to these embodiments of the invention, the second insulating part 53 comprises the second stacked from top to bottom insulating washer 58 and the second insulating barrier 59.Thus, the leakage of the first triboelectricity portion and the second fricative electric charge in triboelectricity portion can effectively be avoided further.
Concrete, Power Generation Section needs to adopt following combining form according to difference:
As shown in Figure 3, the first triboelectricity portion 54 is made up of the first electrode 541, and the second triboelectricity portion 55 is made up of the first friction member 551; In the transducer of this kind of structure Power Generation Section, the first electrode 541 and shield shell 100 can as the signal output parts of transducer.The advantage of the Power Generation Section of this kind of structure is that structure is simple, but there is the relatively weak problem of output voltage signal.
As shown in Figure 4, on architecture basics shown in Fig. 3, second triboelectricity portion further increases the lower surface that the second electrode 552, second electrode 552 is arranged on the first friction member 551, and namely the second triboelectricity portion 55 is made up of the first friction member 551 of stacked setting and the second electrode 552; In the transducer of this kind of structure, the first electrode 541 and the second electrode 552 are as the signal output part of transducer.The advantage of the Power Generation Section of this kind of structure is that output voltage signal is relatively large.
As shown in Figure 5, on architecture basics shown in Fig. 3, first triboelectricity portion further increases the second friction member 542, first friction member 542 and is arranged on the lower surface of the first electrode 541, and namely the first triboelectricity portion 54 is made up of the first electrode 541 of stacked setting and the first friction member 542; In the transducer of this kind of structure, the first electrode 542 and shield shell 100 are as the signal output part of transducer.The Power Generation Section of this kind of structure adopts friction member and friction member friction, and advantage is that output voltage signal is relatively large, and preferably the first friction member and the second friction member select different materials.
As shown in Figure 6, on architecture basics shown in Fig. 3, second triboelectricity portion further increases the second electrode 552, first triboelectricity portion further increases the second friction member 542, wherein, second electrode 552 is arranged on the lower surface of the first friction member 551, second friction member 542 is arranged on the lower surface of the first electrode 541, namely the second triboelectricity portion 55 is made up of the first friction member 551 of stacked setting and the second electrode 552, and the first triboelectricity portion 54 is made up of the first electrode 541 of stacked setting and the first friction member 542; In the transducer of this kind of structure, the first electrode 541 and the second electrode 552 are as the signal output part of transducer.The Power Generation Section of this kind of structure adopts friction member and friction member friction, and advantage is that output voltage signal is relatively larger, and preferably the first friction member and the second friction member select different materials.
According to embodiments of the invention, first friction member and the second friction member material respectively can for being selected from as polyimides, aniline-formaldehyde resin, polyformaldehyde, ethyl cellulose, polyamide, melamino-formaldehyde, polyethylene glycol succinate, cellulose, cellulose ethanoate, polyethylene glycol adipate, polydiallyl phthalate, cellulose sponge, renewable sponge, polyurethane elastomer, styrene-acrylonitrile copolymer copolymer, styrene-butadiene-copolymer, staple fibre, poly-methyl, methacrylate, polyvinyl alcohol, polyester, polyisobutene, polyurethane flexible sponge, PETG, polyvinyl butyral resin, formaldehyde-phenol, neoprene, butadiene-propylene copolymer, natural rubber, polyacrylonitrile, at least one in acrylonitrile vinyl chloride and polyethylene third diphenol carbonate.
According to embodiments of the invention, the first electrode and the second electrode material are respectively at least one be 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, lead alloy, ashbury metal, cadmium alloy, bismuth alloy, indium alloy, gallium alloy, tungsten alloy, molybdenum alloy, niobium alloy and tantalum alloy.
Before stressed below with reference to Fig. 7-8 pairs of bearing plates and stressed after be described based on the operating state of the displacement transducer of friction generator.
Fig. 7 is that bearing plate is by the stressed front state based on the displacement transducer of friction generator of backup rolls, displacement transducer based on friction generator comprises shield shell 100, for the upper cover plate 600 of lock shield housing 100 chamber upper end open, for the lower cover 200 of lock shield housing 100 chamber lower ending opening, (the first insulating part 52 arranged is comprised from top to bottom with the triboelectricity assembly 500 being arranged in chamber 10, first triboelectricity portion 54, second triboelectricity portion 55 and the second insulating part 53, wherein, first triboelectricity portion and the second triboelectricity portion are by electrode and/or friction member composition), bearing plate 400 and crushing block 300.Now, crushing block keeps the first deformation and the first triboelectricity portion in triboelectricity assembly and the second triboelectricity portion is contacted with each other under bearing plate and lower cover extruding, and has certain contact area both ensureing.
Fig. 8 state that to be bearing plate be subject to based on the displacement transducer of friction generator after External Force Acting by backup rolls, as seen from the figure, when backup rolls is stressed, make crushing block, under the pressure of bearing plate and lower cover, the second deformation occur, simultaneously bearing plate drive the second triboelectricity portion and the first triboelectricity part from, in this process, the time of releasing friction on the surface that the first triboelectricity portion and the second triboelectricity portion contact with each other produces electric charge, and respectively collected by the electrode in the first triboelectricity portion and/or the second triboelectricity portion, then between two triboelectricity portions, electrical potential difference is produced, then employing static voltmeter or other electrostatic potential checkout equipments can record the voltage between two electrodes or between one of them electrode and screening can, be the voltage that the displacement transducer based on friction generator produces, then can obtain as shown in Equation 1 about the functional relation of X (t) according to the spacing X (t) between the first triboelectricity portion and the second triboelectricity portion and the functional relation of measured voltage V,
X (t)=KV formula 1
Wherein, K is a fixed coefficient.
Thus, the timing when backup rolls starts stressed further, velocity function v (t) relational expression can be obtained about time t differential to formula 1 functional relation, about time t differential, acceleration function a (t) relational expression is obtained to velocity function v (t) relational expression, then according to the functional relation of the deformation of crushing block, the functional relation of suffered external force F=φ (X (t)) can be obtained.
Concrete, for the displacement transducer based on friction generator of the present invention, control the distance between the first triboelectricity portion and the second triboelectricity portion by stepping motor slide unit, and adopt static voltmeter (KEITHLEY Model 6514System Electromer) to measure the voltage produced based on the displacement transducer of friction generator.
Experimental procedure: the distance based on the first triboelectricity portion in the displacement transducer of friction generator and the second triboelectricity portion utilizing stepping motor slide unit to make to be close to increases 0.5mm at every turn, and then return with 0.5mm/ motion, period utilizes static voltmeter to record the magnitude of voltage of each fixed point displacement, and the displacement voltage curve chart obtained as shown in Figure 9.As seen from the figure, voltage and displacement are good linear relationship, then can obtain the relational expression of voltage and displacement according to Fig. 9, then according to record voltage just can obtain based on friction generator displacement transducer inside the first triboelectricity portion and the second triboelectricity portion between distance.
According to the paper delivered at academic journal " energy and environment science " " Theoretical study of contact-modetriboelectric nanogenerators as an effective power source " (ENERGY & ENVIRONMENTALSCIENCE, 2013; 6 (12): 3576) test (as Fig. 9) of the record in and inventor is known, there is linear relationship one to one in above-mentioned output voltage and the spacing between the first triboelectricity portion and the second triboelectricity portion, obtain corresponding displacement function relation, achieve process change in displacement being converted to output voltage change, the i.e. function of displacement transducer, calculated by corresponding function simultaneously, the functions such as acceleration, speed, pressure can also be obtained.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this specification or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (10)
1. based on a displacement transducer for friction generator, it is characterized in that, comprising:
Shield shell, described inside of shield casings limits the chamber opened wide up and down;
Lower cover, described lower cover is positioned at the lower end of described shield shell and is suitable for the lower ending opening of closed described chamber;
Crushing block, described crushing block to be arranged on after there is the first distortion in described chamber and to be positioned at the upper surface of described lower cover;
Bearing plate, the center of described bearing plate upper surface has the backup rolls vertically arranged, and described bearing plate to be arranged on movably in described chamber and to be positioned at the upper surface of described crushing block;
Triboelectricity assembly, described triboelectricity assembly is by Power Generation Section and lay respectively at the first insulating part of described Power Generation Section upper surface and lower surface and the second insulating part forms, described triboelectricity assembly is positioned at described chamber and is set on described backup rolls, described Power Generation Section is made up of the first triboelectricity portion and the second triboelectricity portion, described first triboelectricity portion and the second triboelectricity portion extrude by the elastic force produced after described first distortion of described crushing block generation and contact, frictional interface is formed between two surfaces making described first triboelectricity portion relative with the second triboelectricity portion, and
Upper cover plate, described upper cover plate is positioned at the upper end of described shield shell and is set on described backup rolls, is suitable for the upper end open of closed described chamber,
When described backup rolls is subject to external force, described bearing plate moves the described crushing block of extruding along Impact direction and the second distortion occurs, and then the surface that described first triboelectricity portion and described second triboelectricity portion are contacted with each other produces electric charge when being separated.
2. the displacement transducer based on friction generator according to claim 1, it is characterized in that, described first triboelectricity portion is fixedly connected on the lower surface of described upper cover plate by the first insulating part, described second triboelectricity portion is fixedly connected on the upper surface of described bearing plate by the second insulating part.
3. the displacement transducer based on friction generator according to claim 2, it is characterized in that, described first insulating part comprises the first stacked from top to bottom insulating barrier and the first insulating washer, and described second insulating part comprises the second stacked from top to bottom insulating washer and the second insulating barrier.
4. the displacement transducer based on friction generator according to claim 1, is characterized in that, described shield shell, lower cover and upper cover plate form by metal or containing metal and nonmetallic composite material.
5. the displacement transducer based on friction generator according to any one of claim 1-4, is characterized in that, described first triboelectricity portion is made up of the first electrode, and described second triboelectricity portion is made up of the first friction member.
6. the displacement transducer based on friction generator according to claim 5, is characterized in that, described second triboelectricity portion comprises the second electrode further, and described second electrode is arranged on the lower surface of described first friction member.
7. the displacement transducer based on friction generator according to claim 5, is characterized in that, described first triboelectricity portion comprises the second friction member further, and described second friction member is arranged on the lower surface of described first electrode.
8. the displacement transducer based on friction generator according to claim 5, it is characterized in that, described first triboelectricity portion comprises the second friction member further, described second triboelectricity portion comprises the second electrode further, described second friction member is arranged on the lower surface of described first electrode, and described second electrode is arranged on the lower surface of described first friction member.
9. the displacement transducer based on friction generator according to claim 5 or 7, is characterized in that, described first electrode and described shield shell are the described signal output part based on the displacement transducer of friction generator.
10. the displacement transducer based on friction generator according to claim 6 or 8, is characterized in that, described first electrode and described second electrode are the described signal output part based on the displacement transducer of friction generator.
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