CN103746604A - Photonic crystal power generating device based on lateral vibration band gap - Google Patents
Photonic crystal power generating device based on lateral vibration band gap Download PDFInfo
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- CN103746604A CN103746604A CN201410022604.6A CN201410022604A CN103746604A CN 103746604 A CN103746604 A CN 103746604A CN 201410022604 A CN201410022604 A CN 201410022604A CN 103746604 A CN103746604 A CN 103746604A
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Abstract
The invention provides a photonic crystal power generating device based on a lateral vibration band gap. The photonic crystal power generating device comprises a main beam and branched beams, wherein the branched beams are connected with piezoelectric materials and mass blocks for forming local-area vibrator units, and a plurality of local-area vibrator units with the same structure are symmetrically arranged on the main beam at equal intervals for forming a photonic crystal structure. Energy conversion is carried out by using a piezoelectric technology, and wideband efficient power generation of the power generating device in a vibrating environment is realized by adopting a photonic crystal technology. The photonic crystal power generating device is simple in integral structure and convenient to manufacture, and has lower requirement on the working environment. The lateral vibration power generation frequency band of a piezoelectric vibrating device is effectively widened, and active control is not needed. The photonic crystal power generating device can be used for energy supply of micro-electronics products, such as a wireless sensor.
Description
Technical field
What the present invention relates to is a kind of Blast Furnace Top Gas Recovery Turbine Unit (TRT), specifically a kind of piezoelectricity oscillating generating set that is applicable to utilize the generating of phonon crystal transverse vibration band gap in vibration noise environment.
Background technology
In recent years, along with the development of integrated circuit technique and micro-/receive Mechatronic Systems technology, microelectronic product is widely used in the key areas such as wireless network node, environmental monitoring, automobile, building.The at present development of microelectronic product is limited to the problems such as the microminiaturization of power supply device and life span, so micro-power technology of Development of Novel is very important.Current, the chemical power source scheme majority that MEMS (micro electro mechanical system) adopts is only suitable for the short life cycle, and be difficult to tackle the ever-increasing wireless network node of quantity, and vibration generating device based on piezoelectric effect, although can only produce little other electric power of level, can meet micro-power consumption system requirement, and its vibration source utilizing be ubiquitous, possess and be not subject to the advantages such as place restriction, activity be strong, therefore adopt piezoelectricity oscillating generating set can solve the self-energy supply problem of MEMS (micro electro mechanical system).
The more cantilever beam electrification structure of current research faces the problem of " resonance frequency is single, and generating efficiency is low ".For improving generating efficiency, widen generating frequency band, conventional method has two kinds at present: one, self-adjusting method initiatively, the variation of vibration frequency thereby self natural frequency by ACTIVE CONTROL adjusting device conforms; Two, passive self-adjusting method, i.e. the combination of the Blast Furnace Top Gas Recovery Turbine Unit (TRT) by a plurality of different natural frequencies reaches opens up wide band effect.Two kinds of methods all have shortcoming, and the former self consumes energy large, and the size of the latter's device and design cost all significantly increase.In " frequency analysis of many cantilever beam piezoelectric vibrators and the generator experimental research " of the middle publication of < < XI AN JIAOTONG UNIVERSITY Subject Index > > the 2nd phase the 44th volume February in 2010, a kind of many cantilever beam piezoelectric vibrators structure has been proposed, belong to passive self-adjusting category, some different cantilever beam oscillators are connected on same matrix, thereby the generating frequency band of Blast Furnace Top Gas Recovery Turbine Unit (TRT) is widened to 56-65Hz, and improved energy output.But this structure is that different cantilever beams is arranged on same matrix, the design of cantilever beam is complicated, and production cost is high.
Summary of the invention
The object of the present invention is to provide bandwidth, the raising generating efficiency that can widen generating frequency band, the phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) based on the horizontal band gap of shaking of low cost of manufacture.
The object of the present invention is achieved like this:
Comprise girder and strutbeam, on strutbeam, connect piezoelectric and mass and form local oscillator unit, the identical local oscillator unit of a plurality of structures is symmetrical and be arranged on equally spacedly on girder and form phonon crystal structure, and the surface of the piezoelectric on each local oscillator unit is parallel to the axis of girder.
The present invention can also comprise:
1, the square or circular beam of described girder for being made by silicon, metal or elastomeric material.
2, described local oscillator unit comprises strutbeam, is bonded in the piezoelectric of strutbeam one side, is bonded in the mass of beam end one side.
3, described local oscillator unit comprises strutbeam, is bonded in the piezoelectric of strutbeam both sides, is bonded in the mass of beam end one side.
4, described local oscillator unit comprises strutbeam, is bonded in the piezoelectric of strutbeam both sides, is bonded in the mass of a beam end both sides.
The present invention designs for the electric power supply of microelectronic product, utilizes piezo technology to carry out power conversion, and adopts phonon crystal technology to realize the high-efficient wide-frequency generating of Blast Furnace Top Gas Recovery Turbine Unit (TRT) in vibration environment.Its principle is to be equidistantly arranged symmetrically with some groups of generating strutbeams (local oscillator) along girder length direction, form local resonance type phonon crystal structure, due to the dynamic absorber of local oscillator and mutual coupling, can produce the transverse vibration band gap of different center frequency and different bandwidth, strutbeam high vibration in this frequency band range makes to generate electricity, mechanical energy is converted to electric energy, finally realizes the wideband generating effect of transverse vibration.
The present invention is by some identical cantilever beam oscillators, equidistantly symmetry is arranged on elasticity girder, form local resonance type phonon crystal structure, utilize the horizontal band gap of shaking of its generation, make each cantilever beam oscillator produce larger vibration in band gap frequency range, thereby mechanical energy is converted to electric energy, and then effectively widens the bandwidth of device generating frequency band, improve the generating efficiency of device.The horizontal band gap frequency of shaking of local resonance type phonon crystal is low, and can be by regulating the spacing between cantilever beam oscillator size and oscillator to change band gap position and band gap width.Be applicable to the generating of low-frequency vibration environment.Widening in the mechanism of generating frequency band, the tandem plan fundamental difference of the present invention and background technology, also has the advantages such as energy output is large, design and manufacture cost is low simultaneously.
The invention has the advantages that in a word overall structure is simple, easily manufactured, and the transverse vibration generating frequency band of piezoelectric vibrating device has been carried out effectively widening, without ACTIVE CONTROL, lower to the requirement of operational environment.Can be used for the energy supply of the microelectronic products such as wireless senser etc.
Accompanying drawing explanation
Fig. 1 is the three-dimensional structure schematic diagram of a kind of execution mode of the phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) based on the horizontal band gap of shaking of the present invention.
Fig. 2 is the structural representation of bimorph single mass local oscillator.
Fig. 3 is the three-dimensional structure schematic diagram of the another kind of execution mode of the phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) based on the horizontal band gap of shaking of the present invention.
Fig. 4 is single piezoelectric patches single mass local oscillator structure schematic diagram.
Fig. 5 is bimorph double quality blocks local oscillator structure schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, for example the present invention is described in more detail.
In conjunction with Fig. 1, technical scheme of the present invention mainly comprises girder 1, piezoelectric 2, mass 3 and strutbeam 4.
During actual use, should be taken into account that following several factor can improve above-mentioned execution mode.
(1). girder and local oscillator structure.Energy requirement according to the vibration frequency of operational environment and intensity and the equipment of use, can change girder or local oscillator structure, as Fig. 3,4,5.When required electric weight is larger, can change single piezoelectric patches into bimorph, mass number also can change, and girder also can be by girder alternative cross section, circular section girder etc.
(2). the material of girder and local oscillator.According to operational environment vibration frequency, change the composition material of girder and local oscillator, thereby band gap frequency adjustment is extremely matched with external environment condition vibration frequency.
(3). the periodicity of structure.According to physical dimension requirement, energy output size, frequency band range etc., can adjust the number of cycles of phonon crystal.
Claims (5)
1. the phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) based on the horizontal band gap of shaking, comprise girder and strutbeam, on strutbeam, connect piezoelectric and mass and form local oscillator unit, it is characterized in that: the identical local oscillator unit of a plurality of structures is symmetrical and be arranged on equally spacedly on girder and form phonon crystal structure, the surface of the piezoelectric on each local oscillator unit is parallel to the axis of girder.
2. the phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) based on the horizontal band gap of shaking according to claim 1, is characterized in that: the square or circular beam of described girder for being made by silicon, metal or elastomeric material.
3. the phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) based on the horizontal band gap of shaking according to claim 1 and 2, is characterized in that: described local oscillator unit comprises strutbeam, is bonded in the piezoelectric of strutbeam one side, is bonded in the mass of beam end one side.
4. the phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) based on the horizontal band gap of shaking according to claim 1 and 2, is characterized in that: described local oscillator unit comprises strutbeam, is bonded in the piezoelectric of strutbeam both sides, is bonded in the mass of beam end one side.
5. the phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) based on the horizontal band gap of shaking according to claim 1 and 2, is characterized in that: described local oscillator unit comprises strutbeam, is bonded in the piezoelectric of strutbeam both sides, is bonded in the mass of a beam end both sides.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105790634A (en) * | 2016-01-26 | 2016-07-20 | 上海工程技术大学 | Broadband acoustic energy recovery device |
| CN106340950A (en) * | 2016-09-12 | 2017-01-18 | 广东顺德中山大学卡内基梅隆大学国际联合研究院 | Sensor-network self-powered system |
| CN106683658A (en) * | 2017-01-09 | 2017-05-17 | 哈尔滨工业大学（威海） | Cascaded-structure photonic crystal |
| CN106936331A (en) * | 2017-05-11 | 2017-07-07 | 吉林大学 | A kind of mechanical oscillation amplifying type piezoelectric straight line mobile phone vibrating motor |
| CN107147329A (en) * | 2017-06-08 | 2017-09-08 | 南京邮电大学 | A kind of acoustic energy retracting device |
| CN108712108A (en) * | 2018-06-27 | 2018-10-26 | 浙江工商大学 | A kind of bistable state piezoelectric vibration energy collector array apparatus |
| CN106341055B (en) * | 2016-09-13 | 2018-11-13 | 广东顺德中山大学卡内基梅隆大学国际联合研究院 | Vibration energy collector |
| CN108957031A (en) * | 2018-08-07 | 2018-12-07 | 东南大学 | Wide range high sensitivity vibration of optical sensor based on vibration coupling |
| CN109150011A (en) * | 2018-08-09 | 2019-01-04 | 南京邮电大学 | Three layers of cross-linked network square piezoelectric energy collector of ultrasonic action |
| CN110474566A (en) * | 2018-05-09 | 2019-11-19 | 重庆交通大学 | A kind of wideband vibration damping energy-collecting device of more piezoelectric cantilevers |
| CN110594331A (en) * | 2019-09-19 | 2019-12-20 | 哈尔滨工程大学 | Hierarchical periodic structure metamaterial beam suitable for multi-frequency-band vibration reduction |
| CN110793620A (en) * | 2019-11-28 | 2020-02-14 | 长安大学 | Noise detection device and detection method |
| CN113446342A (en) * | 2021-05-27 | 2021-09-28 | 天津大学 | Quasi-zero rigid elastic wave metamaterial vibration isolation device with active regulation and control function |
| CN113852294A (en) * | 2021-08-29 | 2021-12-28 | 北京工业大学 | Vibration-damping energy-harvesting dual-function metamaterial beam |
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| CN101997444A (en) * | 2009-08-14 | 2011-03-30 | 扬州博达电气设备有限公司 | Novel piezoelectric energy recovery device |
| CN102931878A (en) * | 2012-10-26 | 2013-02-13 | 北京理工大学 | Multi-cantilever broadband MEMS (micro-electromechanical system) piezoelectric energy harvester |
| JP2013077646A (en) * | 2011-09-29 | 2013-04-25 | Tohoku Univ | Dielectric thin film device for electrostatic induction type power generation device |
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| US20100109482A1 (en) * | 2006-11-15 | 2010-05-06 | Hideo Sunaga | Tidal power generator |
| CN101997444A (en) * | 2009-08-14 | 2011-03-30 | 扬州博达电气设备有限公司 | Novel piezoelectric energy recovery device |
| JP2013077646A (en) * | 2011-09-29 | 2013-04-25 | Tohoku Univ | Dielectric thin film device for electrostatic induction type power generation device |
| CN102931878A (en) * | 2012-10-26 | 2013-02-13 | 北京理工大学 | Multi-cantilever broadband MEMS (micro-electromechanical system) piezoelectric energy harvester |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105790634B (en) * | 2016-01-26 | 2017-09-15 | 上海工程技术大学 | A kind of wideband acoustic energy retracting device |
| CN105790634A (en) * | 2016-01-26 | 2016-07-20 | 上海工程技术大学 | Broadband acoustic energy recovery device |
| CN106340950B (en) * | 2016-09-12 | 2019-07-09 | 广东顺德中山大学卡内基梅隆大学国际联合研究院 | Sensor network self-contained electric system |
| CN106340950A (en) * | 2016-09-12 | 2017-01-18 | 广东顺德中山大学卡内基梅隆大学国际联合研究院 | Sensor-network self-powered system |
| CN106341055B (en) * | 2016-09-13 | 2018-11-13 | 广东顺德中山大学卡内基梅隆大学国际联合研究院 | Vibration energy collector |
| CN106683658A (en) * | 2017-01-09 | 2017-05-17 | 哈尔滨工业大学（威海） | Cascaded-structure photonic crystal |
| CN106683658B (en) * | 2017-01-09 | 2020-12-15 | 哈尔滨工业大学（威海） | Phononic crystal with series structure |
| CN106936331A (en) * | 2017-05-11 | 2017-07-07 | 吉林大学 | A kind of mechanical oscillation amplifying type piezoelectric straight line mobile phone vibrating motor |
| CN107147329A (en) * | 2017-06-08 | 2017-09-08 | 南京邮电大学 | A kind of acoustic energy retracting device |
| CN110474566A (en) * | 2018-05-09 | 2019-11-19 | 重庆交通大学 | A kind of wideband vibration damping energy-collecting device of more piezoelectric cantilevers |
| CN108712108A (en) * | 2018-06-27 | 2018-10-26 | 浙江工商大学 | A kind of bistable state piezoelectric vibration energy collector array apparatus |
| CN108957031A (en) * | 2018-08-07 | 2018-12-07 | 东南大学 | Wide range high sensitivity vibration of optical sensor based on vibration coupling |
| CN109150011A (en) * | 2018-08-09 | 2019-01-04 | 南京邮电大学 | Three layers of cross-linked network square piezoelectric energy collector of ultrasonic action |
| CN109150011B (en) * | 2018-08-09 | 2019-11-05 | 南京邮电大学 | Three layers of cross-linked network square piezoelectric energy collector of ultrasonic action |
| CN110594331A (en) * | 2019-09-19 | 2019-12-20 | 哈尔滨工程大学 | Hierarchical periodic structure metamaterial beam suitable for multi-frequency-band vibration reduction |
| CN110793620A (en) * | 2019-11-28 | 2020-02-14 | 长安大学 | Noise detection device and detection method |
| CN110793620B (en) * | 2019-11-28 | 2024-01-26 | 长安大学 | Noise detection device and detection method |
| CN113446342A (en) * | 2021-05-27 | 2021-09-28 | 天津大学 | Quasi-zero rigid elastic wave metamaterial vibration isolation device with active regulation and control function |
| CN113852294A (en) * | 2021-08-29 | 2021-12-28 | 北京工业大学 | Vibration-damping energy-harvesting dual-function metamaterial beam |
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Application publication date: 20140423 |