CN108718161B - A kind of piezo-electric generating floor - Google Patents

A kind of piezo-electric generating floor Download PDF

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Publication number
CN108718161B
CN108718161B CN201810555642.6A CN201810555642A CN108718161B CN 108718161 B CN108718161 B CN 108718161B CN 201810555642 A CN201810555642 A CN 201810555642A CN 108718161 B CN108718161 B CN 108718161B
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CN
China
Prior art keywords
mobile
piezoelectric cantilever
sliding block
upper layer
mobile sliding
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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.)
Expired - Fee Related
Application number
CN201810555642.6A
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Chinese (zh)
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CN108718161A (en
Inventor
姚明辉
彭乐伦
景浩
马立
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Beijing University of Technology
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Beijing University of Technology
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Publication date
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Priority to CN201810555642.6A priority Critical patent/CN108718161B/en
Publication of CN108718161A publication Critical patent/CN108718161A/en
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Publication of CN108718161B publication Critical patent/CN108718161B/en
Expired - Fee Related legal-status Critical Current
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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02NELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/18Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00Flooring
    • E04F15/02Flooring or floor layers composed of a number of similar elements
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02NELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/18Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
    • H02N2/186Vibration harvesters
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F2290/00Specially adapted covering, lining or flooring elements not otherwise provided for

Abstract

The present invention relates to a kind of piezo-electric generating floors, including upper layer lifting part and lower layer's power generation part, upper layer lifting part includes cover plate of upper layer, lifting spring, hemispherical compression bar and middle layer positioning plate, lower layer's power generation part includes mobile sliding block, fixed piezoelectric cantilever, mobile piezoelectric cantilever, underlying substrate, compression spring and piezoelectric patches, it is applied pressure on mobile sliding block by hemispherical compression bar, and the fixation piezoelectric cantilever end impact for being mounted on the movement of the mobile piezoelectric cantilever on mobile sliding block and being fixed on underlying substrate produces electricl energy, the compression spring in mobile sliding block one end, which is squeezed, simultaneously applies pressure to piezoelectric patches and produces electricl energy, floor cover plate of upper layer rises when pressure is cancelled, mobile sliding block is moved round about by the restoring force of end compression spring, piezoelectric cantilever end is hit again to be produced electricl energy.The present invention is applied in the energy supply of smart home or the electricity collection of the biggish public place of flow of the people.

Description

A kind of piezo-electric generating floor
Technical field
The present invention relates to a kind of using positive pressure voltage electrical effect acquisition electric energy and tramples ground when realizing human body walking generates Walking pressure conversion of the human body load on floor can be effectively electric energy, belong to pressure by the method and device of the collection of energy Generated energy acquisition and electricity-generating floor design field.
Background technique
Goed deep into recent years with the research for piezoelectric material, the collection of vibrational energy gradually becomes popular, vibration The collection of energy has the advantages that environmental protection is cheap, and the vibrational energy of moving component can be converted to electricity by the direct piezoelectric effect of piezoelectric material Can, and energy supply of the floor to other small electronic equipments for being laid on ground may be implemented, it is a kind of energy supply with feasibility Method.
The advantages that piezoelectric energy collecting device has structure simple, and calorific value is few, anti-interference strong, to mechanical vibrational energy Using with preferable effect, especially in the acquisition of micro-energy and utilization.
Already present electricity-generating floor is all generally without sufficient generating capacity in the market, and the use of piezoelectric material is not yet It is enough reasonable, and is all mostly that structure type is single, lifting structure can efficiently use the space of structure, piezoelectric cantilever by a small margin Mutual collision and the stress of piezoelectric patches squeeze, linear structure and nonlinear organization are combined, reasonably apply human foot The pressure conversion added is piezoelectric energy, has more sufficient generated energy in application in practice, guarantees small electronic equipment Energy supply.
Summary of the invention
The present invention will collect energy caused by walking pressure of the human body load on floor and using direct piezoelectric effect into Row power generation, by power storage into energy storing structure, to solve the small electronic equipment of smart home system or public place Energy supply problem.
In order to solve the above technical problems, technical scheme is as follows:
It is a kind of using piezoelectric energy acquisition principle it is novel can electricity-generating floor, including upper layer lifting part and lower layer Power Generation Section Point;The upper layer lifting part includes cover plate of upper layer, lifting spring, middle layer positioning plate and hemispherical compression bar, the cover plate of upper layer It for the upper surface on floor, is directly contacted with the vola of human body, human foot tramples the upper layer lid during human body walking The upper surface of plate, which applies pressure, makes the cover plate of upper layer settle one section of slight distance, and the hemispherical compression bar is welded on the upper layer The lower surface center of cover board, decline synchronous with the cover plate of upper layer, the lifting spring are mounted on described during sedimentation It is in contact between cover plate of upper layer and the middle layer positioning plate and with the two;Lower layer's power generation part includes mobile sliding block, movement Piezoelectric cantilever, fixed piezoelectric cantilever, mobile piezoelectric cantilever fixture, fixed piezoelectric cantilever fixture, compression spring, piezoelectricity The tangent contact of spherical surface of piece, push rod rubber ring and underlying substrate, the bevel edge of the mobile sliding block and the hemispherical compression bar, it is described Mobile piezoelectric cantilever is mounted on the mobile sliding block by the mobile piezoelectric cantilever fixture, the mobile piezoelectric cantilever The stretching direction of beam and Y-axis are parallel and symmetrical with XZ Plane Installation, and the fixed piezoelectric cantilever passes through fixed piezoelectric cantilever Fixture is mounted on the installation base of the underlying substrate, and the stretching direction of the fixed piezoelectric cantilever is parallel with Y-axis, described Push rod rubber ring is nested in the extension bar end of mobile sliding block, and another plane and the compression spring of the push rod rubber ring connect Touching, the piezoelectric patches are fixedly mounted on the end of the moving guide rail of the underlying substrate and contact with the compression spring.
The lifting spring provides the resistance of floor sedimentation and the elastic force of rising for upper layer lifting part, applies in human foot The pressure added is cancelled the rear cover plate of upper layer and is risen by the elastic force effect of the lifting spring, pressure and institute when foot application State lifting spring resistance it is equal when infall process terminate, when the hemispherical compression bar rises to extreme position, its is hemispheroidal Planar section is contacted with the middle layer positioning plate can not continue to rise, and uphill process terminates;
The hemispherical compression bar push during, the mobile sliding block by the power vertical with its bevel edge effect and It is moved in the guide rail of the underlying substrate, in the moving process of the mobile piezoelectric cantilever, the mobile piezoelectric cantilever The end of beam and the end of the fixed piezoelectric cantilever collide;It is described during the hemispherical compression bar rises The power that the bevel edge of mobile sliding block is subject to also cancels therewith, and the compression spring, which applies restoring force to the mobile sliding block, makes the shifting Movable slider is mobile to floor center position, the mobile piezoelectric cantilever mobile and described mobile piezoelectricity with the mobile sliding block The end of cantilever beam and the end of the fixed piezoelectric cantilever collide again;In the mobile piezoelectric cantilever and described During the motional collision of fixed piezoelectric cantilever, vibration in piezoelectric cantilever beam simultaneously generates electricity;
In separate floor center of the mobile sliding block along X-direction and the moving process close to floor center, to institute Compression spring is stated to apply pressure respectively and reduce pressure, pressure change of the compression spring to the piezoelectric patches, the piezoelectricity Piece produces electricl energy under the pressure effect of variation;
The bevel edge of the mobile sliding block is set as 45 degree, the bevel edge of the mobile sliding block always with the hemispherical compression bar Spherical surface is tangent and is in close contact;
The mobile piezoelectric cantilever and the fixed piezoelectric cantilever are isometric, the mobile piezoelectric cantilever with it is described solid Determine piezoelectric cantilever to be aligned in the Z-axis direction and in a plane, it is parallel in X/Y plane and be staggered;
Compared with prior art, the beneficial effects of the present invention are:
(1) movement for having bevelled mobile sliding block is introduced, the linear motion of vertical direction is converted into horizontal direction Linear motion, the maximized useful space for utilizing structure.
(2) vibration is generated using the collision between piezoelectric cantilever, so that the electric flux of acquisition is more sufficient.
(3) linear structure and nonlinear organization are combined, adequately realizes the combination of the both of which of piezo-electric generating, tied Structure is more reasonable and generating efficiency is higher
(4) collection for realizing vibrational energy of the floor in two strokes of raising and lowering of small distance, compared to can only The structure for collecting the energy of single stroke has great advantages.
Detailed description of the invention
Fig. 1 is overall structure assembling schematic diagram of the present invention;
Fig. 2 is overall structure of the explosion figure of the present invention;
Fig. 3 is the non-pressured state cross-sectional view of overall structure of the present invention;
Fig. 4 is overall structure pressured state cross-sectional view of the present invention;
Fig. 5 is the non-pressured state schematic diagram of lower layer's power generation part in the present invention;
Fig. 6 is the non-pressured state top view of lower layer's power generation part of the present invention;
Fig. 7 is lower layer's power generation part pressured state schematic diagram of the present invention;
Fig. 8 is lower layer's power generation part pressured state top view of the present invention;
Fig. 9 is the non-pressured state schematic diagram of generator unit of the present invention;
Figure 10 is generator unit pressured state schematic diagram of the present invention
The middle layer 1- cover plate of upper layer 2- lifting spring 3- positioning plate 4- hemispherical compression bar
The mobile piezoelectric cantilever of the fixed piezoelectric cantilever 8- of the mobile sliding block 6- piezoelectric patches 7- of 5-
The fixed piezoelectric cantilever fixture of the mobile piezoelectric cantilever fixture 11- of 9- underlying substrate 10-
12- compression spring 13- push rod rubber ring
Specific embodiment
The present invention is described in further detail below with reference to specific embodiment.
As shown in Figures 1 to 10, a kind of novel piezoelectric electricity-generating floor.
Fig. 1 is overall structure assembling schematic diagram, is divided into two parts: upper layer lifting part and lower layer's power generation part.
As shown in Fig. 2, Fig. 2 is overall structure of the explosion figure, overall structure includes one piece of cover plate of upper layer, 1, lifting spring 2, one piece of middle layer positioning plate, 3, hemispherical compression bars 4, the two pieces of mobile sliding block being symmetrically installed 5, four mobile piezoelectric cantilevers 8, four fixed piezoelectric cantilever fixture 11, two of fixed piezoelectric cantilever 7, two mobile piezoelectric cantilever fixtures 10, four 12, two pieces of the compression spring push rod rubber ring 13 of piezoelectric patches 6, two and one piece of underlying substrate 9.
As shown in Figure 3 and Figure 4, Fig. 3 and Fig. 4 is integrally-built cross-sectional view, and Fig. 3 is that the non-pressured state of overall structure cuts open View, Fig. 4 overall structure pressured state cross-sectional view.The detailed process of pressured state are as follows: in floor upper surface by Human Sole Pressure sedimentation mistake during, middle layer positioning plate 3 remains motionless, cover plate of upper layer 1 push, lifting spring 2 compression and Resistance is replied to increase, when the reply resistance balance for the pressure and lifting spring 2 for being applied to floor upper surface, infall process is terminated, Hemispherical compression bar 4 reaches the extreme position of decline;The detailed process of non-pressured state are as follows: vola is left on floor when human body walking Surface, cover plate of upper layer 1, the restoring force effect by lifting spring 2 are begun to ramp up, when the plane side of hemispherical compression bar 4 is in Rise process terminates when the following table face contact of layer positioning plate, and hemispherical compression bar 4 reaches the extreme position risen.
As shown in Figure 5 and Figure 6, Fig. 5 is the non-pressured state schematic diagram of lower layer's power generation part, and the inclined-plane of two symmetrical sliding blocks at V-shape;Fig. 6 is the non-pressured state top view of lower layer's power generation part, and the spherical surface of hemispherical compression bar 4 and the inclined-plane of mobile sliding block are tangent And it is in close contact, mobile piezoelectric cantilever 8 is located at overall structure by paracentral inside, and fixed piezoelectric cantilever 7, which is located at, to be moved The outside of dynamic piezoelectric cantilever 8, compression spring 12 are between the push rod rubber ring 13 and piezoelectric patches 6 of mobile 5 one end of sliding block simultaneously And the two contacts always, mobile sliding block 5, push rod rubber ring 13, compression spring 12 and piezoelectric patches 6 are in the guide rail of underlying substrate 9 Interior and X-direction is co-axially mounted.
As shown in Figure 7 and Figure 8, Fig. 7 is lower layer's power generation part pressured state schematic diagram, and Fig. 8 is that lower layer's power generation part is pressurized State top view, in conjunction with Fig. 5 and Fig. 6, in pressured state: mobile sliding block 5 applies pressure to compression spring 12, in the work of pressure It is produced electricl energy with lower piezoelectric piece 6, the mobile piezoelectric cantilever 8 of lower layer's power generation part is mobile to the outside of integral central, and moves Dynamic piezoelectric cantilever 8 generates collision both in axis of the mobile process in fixed piezoelectric cantilever 7 and vibrates, thus success It produces electricl energy;In non-pressured state: the be under pressure effect of back stretch of spring 12 of mobile sliding block 5 is moved to integral central It is dynamic, the pressure change that is applied on piezoelectric patches 6 and produce electricl energy, the mobile piezoelectric cantilever 8 of lower layer's power generation part is into entirety The medial movement of the heart, and mobile piezoelectric cantilever 8 generates both in axis of the mobile process in fixed piezoelectric cantilever 7 It collides and vibrates, to successfully produce electricl energy.
As shown in Figures 9 and 10, Fig. 9 is the non-pressured state schematic diagram of generator unit, and Figure 10 is that generator unit pressured state shows It is intended to.The mobile sliding block being symmetrically installed in pressured state is in discontiguous discrete state, symmetrically pacifies in non-pressured state The mobile sliding block of dress is in the state of contact.
Although above in conjunction with figure, invention has been described, and the invention is not limited to above-mentioned specific embodiment parties Formula, the above mentioned embodiment is only schematical, rather than restrictive, the case where not departing from present inventive concept Under, many variations can also be made, these belong to protection category of the invention.

Claims (9)

1. a kind of piezo-electric generating floor, it is characterised in that: including upper layer lifting part and lower layer's power generation part;The upper layer lifting Part includes cover plate of upper layer (1), lifting spring (2), middle layer positioning plate (3) and hemispherical compression bar (4), the cover plate of upper layer (1) It for the upper surface on floor, is directly contacted with the vola of human body, human foot tramples the upper layer lid during human body walking The upper surface of plate (1), which applies pressure, makes the cover plate of upper layer (1) to settle a distance, and the hemispherical compression bar (4) is welded on institute The lower surface center for stating cover plate of upper layer (1), decline synchronous with the cover plate of upper layer (1), the lifting bullet during sedimentation Spring (2) is mounted between the cover plate of upper layer (1) and the middle layer positioning plate (3) and is in contact with the two;Lower layer's power generation Part includes mobile sliding block (5), mobile piezoelectric cantilever (8), fixed piezoelectric cantilever (7), mobile piezoelectric cantilever fixture (10), fixed piezoelectric cantilever fixture (11), compression spring (12), piezoelectric patches (6), push rod rubber ring (13) and underlying substrate (9), the tangent contact of spherical surface of the bevel edge and the hemispherical compression bar (4) of the mobile sliding block (5), the mobile piezoelectric cantilever (8) it is mounted on the mobile sliding block (5) by the mobile piezoelectric cantilever fixture (10), the mobile piezoelectric cantilever (8) stretching direction is parallel with Y-axis, and the mobile piezoelectric cantilever (8) is mounted on the two sides of mobile sliding block (5) and symmetrical peace Dress, the fixed piezoelectric cantilever (7) pass through the installation that fixed piezoelectric cantilever fixture (11) are mounted on the underlying substrate (9) On boss, the stretching direction of the fixed piezoelectric cantilever (7) is parallel with Y-axis, and the push rod rubber ring (13) is nested in movement Another plane of the extension bar end of sliding block (5), the push rod rubber ring (13) is contacted with the compression spring (12), the pressure Electric piece (6) is fixedly mounted on the end of the moving guide rail of the underlying substrate (9) and contacts with the compression spring (12).
2. piezo-electric generating floor according to claim 1, the lifting spring (2) provides floor for upper layer lifting part and sinks The resistance of drop and the elastic force of rising, the cover plate of upper layer (1) is by the lifting bullet after the pressure that human foot applies is cancelled The elastic force of spring (2), which acts on, to be risen, the infall process knot when the pressure that foot applies is equal with the resistance of the lifting spring (2) Beam, its hemispheroidal planar section and the middle layer positioning plate (3) when the hemispherical compression bar (4) rises to extreme position Contact can not continue to rise, and uphill process terminates;The middle layer positioning plate (3) and underlying substrate (9) remain it is motionless and The two is installed in parallel.
3. piezo-electric generating floor according to claim 1, during the hemispherical compression bar (4) pushes, the shifting Movable slider (5) by the power vertical with its bevel edge effect and moved in the guide rail of the underlying substrate (9), drive the shifting The movement of dynamic piezoelectric cantilever (8), the end of the end of the mobile piezoelectric cantilever (8) and the fixed piezoelectric cantilever (7) End collides;The hemispherical compression bar (4) rise during, the power that the bevel edge of the mobile sliding block (5) is subject to also with Revocation, the compression spring (12), which applies restoring force to the mobile sliding block (5), makes the mobile sliding block (5) to floor center Direction is mobile, the mobile piezoelectric cantilever (8) mobile and described mobile piezoelectric cantilever (8) with the mobile sliding block (5) End and the end of the fixed piezoelectric cantilever (7) collide again;In the mobile piezoelectric cantilever (8) and described During the motional collision of fixed piezoelectric cantilever (7), vibration in piezoelectric cantilever beam simultaneously generates electricity.
4. piezo-electric generating floor according to claim 1, in the mobile sliding block (5) along the separate floor of X-direction The moving process at center and close floor center applies pressure respectively to the compression spring (12) and reduces pressure, the pressure Power spring (12) produces electricl energy the pressure changes of the piezoelectric patches (6), the piezoelectric patches (6) under the pressure effect of variation.
5. piezo-electric generating floor according to claim 1, the bevel edge angle initialization of the mobile sliding block (5) be with X-axis at 45 degree, the bevel edge of mobile sliding block (5) described in moving process is tangent and close with the spherical surface of the hemispherical compression bar (4) always Contact.
6. piezo-electric generating floor according to claim 1, the mobile piezoelectric cantilever (8) and the fixed piezoelectric cantilever Beam (7) equal length, the mobile piezoelectric cantilever (8) and the fixed piezoelectric cantilever (7) are contour in the Z-axis direction, It is parallel and be staggered in X/Y plane.
7. piezo-electric generating floor according to claim 1, at the mobile sliding block (5) being symmetrically installed in pressured state In discontiguous discrete state, the mobile sliding block (5) being symmetrically installed in non-pressured state is in the state and two of contact The inclined-plane of symmetrical sliding block is at V-shape.
8. piezo-electric generating floor according to claim 1, the compression spring (12) is in described mobile sliding block (5) one end The push rod rubber ring (13) and the piezoelectric patches (6) between and the two contact always, mobile sliding block (5), push rod rubber Circle (13), compression spring (12) and piezoelectric patches (6) are interior in the guide rail of underlying substrate (9) and are parallel to X-direction and coaxially pacify Dress.
9. piezo-electric generating floor according to claim 1, the mobile piezoelectric cantilever (8) and the fixed piezoelectric cantilever Beam (7) material therefor is PVDF, and piezoelectric patches (6) material therefor is PZT, and is communicated by external wire with energy storing structure Electric energy is exported.
CN201810555642.6A 2018-05-31 2018-05-31 A kind of piezo-electric generating floor Expired - Fee Related CN108718161B (en)

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CN109827904A (en) * 2019-03-19 2019-05-31 安徽理工大学 A kind of reaction pool device based on micro-cantilever beam sensor
CN110912450B (en) * 2019-05-18 2021-10-01 浙江师范大学 Amplitude limiting excitation type low-frequency piezoelectric generator
CN111530534A (en) * 2020-05-10 2020-08-14 蔡永霞 Handheld piezoelectric type medicine pestle
CN111697878B (en) * 2020-07-23 2021-05-25 上海大学 Low-frequency collision mode sole energy collector based on piezoelectric stack
CN112332707B (en) * 2020-11-24 2024-03-22 重庆大学 Miniature power generation device utilizing impact vibration
CN112547731A (en) * 2020-11-24 2021-03-26 古格亚(温州)网络科技有限公司 Auxiliary assembly for automatically cleaning precipitated cement and improving conveying efficiency for cement transportation
CN112532109B (en) * 2020-12-09 2021-12-07 上海大学 Low-frequency compression mode piezoelectric energy collector
CN113107796B (en) * 2021-03-27 2022-08-02 上海寅生科技有限公司 Potential energy power generation floor

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CN102570620B (en) * 2011-12-26 2013-12-11 上海交通大学 Walking energy collection system
GB2507132B (en) * 2012-11-13 2016-07-06 Perpetuum Ltd An electromechanical generator for, and method of, converting mechanical vibrational energy into electrical energy
CN203654673U (en) * 2014-01-08 2014-06-18 武汉理工大学 Piezoelectric power-generating floor
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CN106899231B (en) * 2017-03-16 2019-02-22 长安大学 A kind of rotary transducing head of piezo-electric generating

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