CN108776280B - Piezoelectric energy collector testing device based on self-parameter dynamic vibration absorber - Google Patents
Piezoelectric energy collector testing device based on self-parameter dynamic vibration absorber Download PDFInfo
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- CN108776280B CN108776280B CN201810759838.7A CN201810759838A CN108776280B CN 108776280 B CN108776280 B CN 108776280B CN 201810759838 A CN201810759838 A CN 201810759838A CN 108776280 B CN108776280 B CN 108776280B
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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Abstract
The invention relates to a piezoelectric energy collector testing device based on a self-parameter dynamic vibration absorber, which relates to a measuring device and aims to solve the problems that the traditional piezoelectric energy collector generally adopts a simple cantilever beam structure, the structure is simple, the function is single, and the energy collection and the base inhibition vibration are greatly limited; the invention belongs to the technical field of piezoelectric energy collector testing, and discloses a piezoelectric energy collector testing device.
Description
Technical Field
The invention relates to a measuring device, in particular to a piezoelectric energy collector testing device based on a self-parameter dynamic vibration absorber, and belongs to the technical field of piezoelectric energy collector testing.
Background
In recent years, the application range of tiny electronic devices such as sensors is expanding, and they have the characteristics of small energy consumption, large quantity, wide distribution range and bad working environment. The conventional electrochemical battery for supplying power has the defects of short service life, frequent replacement and the like, which greatly increases the operation cost of the equipment, so that a novel energy supply mode is urgently needed.
The external environment has abundant vibration energy, particularly in engineering practice, the vibration energy which jeopardizes mechanical precision and service life can well supply energy to a micro-electromechanical system if the energy is utilized. The piezoelectric energy collector can continuously convert vibration energy into electric energy by utilizing the characteristic that the piezoelectric material can realize the electromechanical energy exchange. The conventional piezoelectric energy collector generally adopts a simple cantilever beam structure, and the structure is directly arranged on a base.
Disclosure of Invention
The invention provides a piezoelectric energy collector testing device based on a self-parameter dynamic vibration absorber, aiming at solving the problems that the traditional piezoelectric energy collector generally adopts a simple cantilever beam structure, the structure is simple, the function is single, and the energy collection and the vibration suppression of a base are greatly limited.
The technical scheme adopted by the invention for solving the problems is as follows: the vibration exciter comprises a vibration exciter, an upper clamping plate, a top plate, a long-head bolt, a cantilever beam, a piezoelectric ceramic piece, an acceleration sensor, a lower clamping plate, a bottom plate, two mass blocks, a plurality of screws and a plurality of springs; the lower clamping plate and the bottom plate are arranged on the vibration exciter from top to bottom, the upper clamping plate is arranged above the lower clamping plate, external threads are processed at the bottom ends of the screw rods, the bottom end of each screw rod is in threaded connection with the lower clamping plate, the top ends of the screw rods are in sliding connection with the upper clamping plate and the top plate, a spring is sleeved on each screw rod, the top end of each spring is fixedly connected with the lower end surface of the upper clamping plate, the bottom end of each spring is fixedly connected with the upper end surface of the lower clamping plate, the long-head bolts are arranged on the upper clamping plate and the top plate, and the long-head bolt is in threaded connection with the upper clamping plate and the top plate, a rectangular notch is processed at the top end of the long-head bolt, the bottom end of the cantilever beam is installed in the rectangular notch at the top end of the long-head bolt, the piezoelectric ceramic piece is adhered to one side surface of the cantilever beam, the two mass blocks are fixedly installed on the top end of the cantilever beam through the bolts in a relatively fixed mode, and the acceleration sensor is adhered to the upper end face of the lower clamping plate.
The invention has the beneficial effects that: by designing the beam and system frequency to reach 1: relationship 2, consisting of 1: 2, due to the internal resonance characteristic, the unstressed beam can absorb energy from a system below and convert the energy into electric energy, so that more efficient energy collection and vibration suppression effects are realized; the invention can also adjust the spring 10 of the main vibration system, the number of nuts on the upper clamping plate 2 of the main vibration system, the weight of the mass block 5 and the position of the mass block 5 on the cantilever beam 6, so that the invention can be always in an internal resonance state; the invention can also change the excitation frequency, thus study the influence of the excitation frequency on energy collection and vibration suppression effect of the dynamic vibration absorber; the invention can also change the size of the excitation amplitude, thereby researching the influence of the excitation amplitude on the energy collection and vibration suppression effect of the dynamic vibration absorber; the invention can also change the magnitude of the external resistance, thereby researching the influence of the external resistance on the energy collection and vibration suppression effect of the dynamic vibration absorber.
Drawings
FIG. 1 is a front view of the overall construction of the present invention;
fig. 2 is a side view of fig. 1.
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1-2, and the piezoelectric energy collector testing device based on the self-parameter dynamic vibration absorber in the embodiment includes a vibration exciter 1, an upper clamping plate 2, a top plate 3, a long-head bolt 4, a cantilever beam 6, a piezoelectric ceramic plate 7, an acceleration sensor 11, a lower clamping plate 12, a bottom plate 13, two mass blocks 5, a plurality of screw rods 9 and a plurality of springs 10; the lower clamping plate 12 and the bottom plate 13 are arranged on the vibration exciter 1 from top to bottom, the upper clamping plate 2 is arranged above the lower clamping plate 12, external threads are processed at the bottom ends of the screw rods 9, the bottom end of each screw rod 9 is in threaded connection with the lower clamping plate 12, the top end of each screw rod 9 is in sliding connection with the upper clamping plate 2 and the top plate 3, a spring 10 is sleeved on each screw rod 9, the top end of each spring 10 is fixedly connected with the lower end face of the upper clamping plate 2, the bottom end of each spring 10 is fixedly connected with the upper end face of the lower clamping plate 12, the long-head bolt 4 is arranged on the upper clamping plate 2 and the top plate 3, the long-head bolt 4 is in threaded connection with the upper clamping plate 2 and the top plate 3, a rectangular notch is processed at the top end of the long-head bolt 4, the bottom end of the cantilever beam 6 is arranged in the rectangular notch at the top end of the long-head bolt, the acceleration sensor 11 is attached to the upper end surface of the lower plate 12.
The second embodiment is as follows: the embodiment is described with reference to fig. 1, and the piezoelectric energy collector testing device based on the self-parameter dynamic vibration absorber further comprises a gasket 8, wherein the gasket 8 is arranged in a rectangular notch at the top end of the long-head bolt 4 and abuts against the cantilever beam 6. The cantilever beam 6 is arranged in the rectangular notch at the top end of the long-head bolt 4 more stably through the gasket 8, and other structures and connection relations are the same as those of the first embodiment.
The third embodiment is as follows: referring to fig. 1 and 2, in the embodiment of the piezoelectric energy collector test device based on the self-parameter dynamic vibration absorber, a circular washer is respectively mounted at the top end and the bottom end of each spring 10, the circular washer at the top end of each spring 10 is mounted on the lower end face of the upper clamping plate 2, and the circular washer at the bottom end of each spring 10 is mounted on the upper end face of the lower clamping plate 12. Other structures and connections are the same as those in the first embodiment.
The fourth embodiment is as follows: referring to fig. 1, the present embodiment, which is a piezoelectric energy collector testing apparatus based on a self-parameter dynamic vibration absorber, is described, wherein an acceleration sensor 11 is adhered to an upper end surface of a lower clamping plate 12 by glue. Other structures and connections are the same as those in the first embodiment.
Fifth embodiment: the embodiment is described with reference to fig. 1 and 2, and the piezoelectric energy collector testing device based on the self-parameter dynamic vibration absorber according to the embodiment is fixedly connected with an upper clamping plate 2 and a top plate 3, and fixedly connected with a lower clamping plate 12 and a bottom plate 13. Other structures and connections are the same as those in the first embodiment.
Sixth embodiment mode: referring to fig. 1, the present embodiment will be described, and in the present embodiment, a cantilever 6 and a spacer 8 are mounted on the side wall of a rectangular notch at the top end of a long head bolt 4 by a pin. Other structures and connections are the same as those in the first embodiment.
Principle of operation
The self-parameter dynamic vibration absorber is arranged on a vibration exciter or mechanical equipment needing vibration suppression, the basic excitation can drive the dynamic vibration absorber to vibrate up and down, and the vibration exciter is characterized in that 1: 2, such up and down vibrations induce a side-to-side oscillation of the beam. The cantilever beam 6 is attached with the piezoelectric ceramic piece 7, the piezoelectric ceramic piece 7 can deform in the left-right swinging process, and the piezoelectric ceramic piece 7 has the characteristic that when the piezoelectric ceramic piece 7 deforms, current can be generated at two ends of the piezoelectric ceramic piece 7, so that the piezoelectric ceramic piece 7 can be collected to be used as electric energy. Therefore, the electric energy can be collected in the working process, the vibration can be restrained, one part of the vibration mechanical energy is converted into the electric energy, and the other part of the vibration mechanical energy is consumed.
Claims (6)
1. The utility model provides a piezoelectric energy collector testing arrangement based on from parameter dynamic vibration absorber which characterized in that: the vibration exciter comprises a vibration exciter (1), an upper clamping plate (2), a top plate (3), a long-head bolt (4), a cantilever beam (6), a piezoelectric ceramic plate (7), an acceleration sensor (11), a lower clamping plate (12), a bottom plate (13), two mass blocks (5), a plurality of screw rods (9) and a plurality of springs (10); the lower clamping plate (12) and the bottom plate (13) are arranged on the vibration exciter (1) from top to bottom, the upper clamping plate (2) is arranged above the lower clamping plate (12), external threads are processed at the bottom end of each screw rod (9), the bottom end of each screw rod (9) is in threaded connection with the lower clamping plate (12), the top end of each screw rod (9) is in sliding connection with the upper clamping plate (2) and the top plate (3), each screw rod (9) is sleeved with one spring (10), the top end of each spring (10) is fixedly connected with the lower end face of the upper clamping plate (2), the bottom end of each spring (10) is fixedly connected with the upper end face of the lower clamping plate (12), the long-head bolt (4) is arranged on the upper clamping plate (2) and the top plate (3), the long-head bolt (4) is in threaded connection with the upper clamping plate (2) and the top plate (3), a rectangular groove is processed at the top end of the long-head bolt (4), the bottom end of the cantilever beam (6) is, the piezoelectric ceramic plate (7) is pasted on one side surface of the cantilever beam (6), the two mass blocks (5) are relatively and fixedly installed on the top end of the cantilever beam (6) through bolts, and the acceleration sensor (11) is pasted on the upper end surface of the lower clamping plate (12).
2. The piezoelectric energy collector test device based on the self-parameter dynamic vibration absorber as claimed in claim 1, wherein: the long-head bolt further comprises a gasket (8), wherein the gasket (8) is arranged in the rectangular notch at the top end of the long-head bolt (4) in a manner of abutting against the cantilever beam (6).
3. The piezoelectric energy collector test device based on the self-parameter dynamic vibration absorber as claimed in claim 1, wherein: the top end and the bottom end of each spring (10) are respectively provided with a round washer, the round washer at the top end of each spring (10) is arranged on the lower end face of the upper clamping plate (2), and the round washer at the bottom end of each spring (10) is arranged on the upper end face of the lower clamping plate (12).
4. The piezoelectric energy collector test device based on the self-parameter dynamic vibration absorber as claimed in claim 1, wherein: the acceleration sensor (11) is adhered to the upper end face of the lower clamping plate (12) through glue.
5. The piezoelectric energy collector test device based on the self-parameter dynamic vibration absorber as claimed in claim 1, wherein: the upper clamping plate (2) is fixedly connected with the top plate (3), and the lower clamping plate (12) is fixedly connected with the bottom plate (13).
6. The piezoelectric energy collector test device based on the self-parameter dynamic vibration absorber as claimed in claim 1, wherein: the cantilever beam (6) and the gasket (8) are arranged on the side wall of the rectangular notch at the top end of the long-head bolt (4) through a pin.
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| CN107769614A (en) * | 2017-11-02 | 2018-03-06 | 安徽理工大学 | A kind of multi-direction vibrational energy harvester of piezoelectric type |
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| US7692365B2 (en) * | 2005-11-23 | 2010-04-06 | Microstrain, Inc. | Slotted beam piezoelectric composite |
| CN103199736A (en) * | 2012-01-09 | 2013-07-10 | 中国科学院上海硅酸盐研究所 | Composite structure piezoelectric energy collector driven by cantilever |
| CN103036478A (en) * | 2013-01-11 | 2013-04-10 | 浙江工商大学 | Efficient wideband vibrating energy collector with elastic amplifying mechanism |
| CN203406804U (en) * | 2013-06-30 | 2014-01-22 | 浙江师范大学 | Cantilever-beam based longitudinal vibration piezoelectric generation apparatus |
| CN103354434A (en) * | 2013-07-02 | 2013-10-16 | 天津大学 | Bistable piezoelectric cantilever beam vibration energy collector |
| US9786832B2 (en) * | 2015-01-05 | 2017-10-10 | Samsung Electronics Co., Ltd. | Energy harvester |
| JP2016174487A (en) * | 2015-03-17 | 2016-09-29 | 住友理工株式会社 | Vibration power generator and floor damping structure using the same and vibration detector |
| CN105932906B (en) * | 2016-06-07 | 2018-09-28 | 清华大学深圳研究生院 | A kind of piezoelectric energy collector and preparation method thereof |
| CN206211878U (en) * | 2016-09-12 | 2017-05-31 | 武汉理工大学 | Road vibration energy harvesting system based on piezo-electric effect |
| CN106856381B (en) * | 2017-01-12 | 2018-07-20 | 合肥工业大学 | A kind of double fork cantilever beam piezoelectric energy collecting devices of beaming type bistable state bending |
| CN106856380B (en) * | 2017-01-12 | 2018-09-14 | 合肥工业大学 | A kind of multi-modal array cantilever beam piezoelectric energy collecting device in space |
| CN107769616A (en) * | 2017-11-30 | 2018-03-06 | 安徽理工大学 | A kind of bistable state piezoelectric energy recovery structure |
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| CN107769614A (en) * | 2017-11-02 | 2018-03-06 | 安徽理工大学 | A kind of multi-direction vibrational energy harvester of piezoelectric type |
| CN107707155A (en) * | 2017-11-17 | 2018-02-16 | 西安电子科技大学 | A kind of ultra wide band high energy efficiency device for collecting piezoelectric vibration energy |
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