CN203708140U - Lever type giant magnetostrictive vibration energy collecting device - Google Patents
Lever type giant magnetostrictive vibration energy collecting device Download PDFInfo
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- CN203708140U CN203708140U CN201320894781.4U CN201320894781U CN203708140U CN 203708140 U CN203708140 U CN 203708140U CN 201320894781 U CN201320894781 U CN 201320894781U CN 203708140 U CN203708140 U CN 203708140U
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Abstract
The utility model discloses a lever type giant magnetostrictive vibration energy collecting device. The device comprises four giant magnetostrictive thin-film resonators, a lever, a hinge supporting base, counterweights, a spring and a pedestal. The four giant magnetostrictive thin-film resonators are symmetrically arranged on the two sides of the lever with two arranged on each side. Swing of the lever is limited between the two giant magnetostrictive thin-film resonators arranged on the same side. The giant magnetostrictive thin-film resonators are fixedly installed on a wall base. The midpoint of the lever is connected with the hinge supporting base via a pin. The lever swings around a pin shaft upwardly and downwardly. The two ends of the lever are provided with the counterweights with different weight. The hinge supporting base is fixedly installed on the pedestal. One end of the spring is fixed on one side of the lever, and the other end is fixed on the pedestal. The lever is driven to swing by utilizing low-frequency vibration in the environment, and vibration is applied to the giant magnetostrictive thin-film resonators in a pulse type impact load mode via the lever so that high initial instantaneous power can be obtained, and thus energy collection efficiency is high.
Description
Technical field
The utility model relates to a kind of energy collecting device, is specifically related to a kind of lever ultra-magnetic telescopic energy gathering apparatus.
Background technology
In recent years, along with radio communication and MEMS (micro electro mechanical system) (Micro-electro-mechanical System, MEMS) development of technology, the range of application of the mems device such as microelectronic device, microsensor and portability electronic device is constantly expanded, especially at embedded system, health detection system, environmental control system, field animal tracking device, and the aspect such as military security application system is widely used.Conventionally, these equipment rely on conventional batteries that energy is provided, as lithium polymer battery, Ni-MH battery etc.But there is obvious defect in conventional batteries: the one, and still larger with respect to its volume of mems device, limit the further microminiaturization of mems device; The 2nd, battery chemistries toxic pollutant is serious; The 3rd, the energy supply life-span is limited.Due to these defect of conventional batteries, various countries researcher research harvest energy from surrounding environment, object is that to replace conventional batteries be mems device power supply.Conventionally the process of utilizing a kind of system to obtain energy from surrounding environment and to be translated into available energy is called to collection of energy, because vibrational energy in environment is a kind of energy existence form of the most common and extensive existence, collect vibrational energy by energy collecting system, there is great utilization prospect for supplementing or replacing battery.Since 21 century, this research direction has become international study hotspot.
Traditional vibrational energy collection mode has electromagnetic type, electrostatic, piezoelectric type, wherein the vibrational energy collection technique most study of piezoelectric type, most widely used general.But because piezoelectric is hard and crisp, the impact that is limited in scope, exists the factors such as intrinsic polarization phenomena, electromechanical coupling factor is lower, fatigue life is short of its holding capacity, make piezoelectric in use need frequent replacing, limited to a certain extent its application.Along with the development of giant magnetostrictive material, the research of the vibrational energy collection technique based on giant magnetostrictive material has become a new focus in the world.Piezoelectric relatively,, there is not fatigue, problem of aging simultaneously in the Problem of Failure that giant magnetostrictive material does not exist depolarising to cause, thereby work is more reliable; The electromechanical coupling factor of giant magnetostrictive material can reach 0.75 (piezoelectric ceramic PZT only has 0.3-0.4), and energy conversion efficiency is higher; Their magnetostrictive strain amount is large, is at room temperature greater than 0.15%, thereby sensitiveer than piezoelectric, can under less amplitude, can produce higher voltage.
At present, energy collecting device structure based on giant magnetostrictive material adopts beam type mostly, power conversion is mW or μ W rank, and be mainly the collection for dither energy, less to low-frequency vibration energy collection research more general in surrounding environment, as mechanical oscillation, road excitation, the vibrational energy in civil structure.In view of the earthquake in mechanical oscillation, road excitation, civil structure or the wind vibrational energy such as shake is larger, therefore studying the power generation characteristics of ultra-magnetic telescopic energy gathering apparatus in the time of low-frequency vibration can more be of practical significance.
Summary of the invention
The utility model is in order to solve under low-frequency vibration, and the low problem of existing energy gathering apparatus conversion efficiency proposes a kind of high efficiency lever ultra-magnetic telescopic energy gathering apparatus.
The utility model comprises four giant magnetostrictive thin film resonators, lever, rocker bar bearing, mass, spring and pedestals, four giant magnetostrictive thin film resonators are symmetrically distributed in lever both sides, every side has two, the swing of lever is limited between two giant magnetostrictive thin film resonators of homonymy, and giant magnetostrictive thin film resonator is fixedly mounted on wall base; Lever mid point is connected by pin with rocker bar bearing, and lever swings up and down around bearing pin, the mass that lever two ends erection weight does not wait; Rocker bar bearing is fixedly mounted on pedestal; Lever one side is fixed in spring one end, and the other end is fixed on pedestal.In the time that pedestal is subject to vibratory impulse, the mass that lever two ends weight does not wait makes lever imbalance, swings up and down, thereby giant magnetostrictive thin film resonator is produced to pulsed excitation; In the 1 quilt impact of giant magnetostrictive thin film resonator and damped vibration, because the piezomagnetic effect of giant magnetostrictive material produces changes of magnetic field, then based on electromagnetic induction principle, the magnetic field of variation makes generation induced electromotive force in closing coil, thereby externally exports electric energy.
Described giant magnetostrictive thin film resonator comprises trip bolt, induction coil, coil rack, giant magnetostrictive thin film, copper layer and mass.Copper layer one end is fixed in wall base, and the other end and mass are rigidly connected and are integrated, and giant magnetostrictive thin film is bonded on copper layer; Coil rack is enclosed within on giant magnetostrictive thin film and copper layer, and is connected on wall base by trip bolt; Induction coil, on coil rack, and is external to regulating circuit, is then connected on mems device or accumulator.
The beneficial effects of the utility model: the utility model utilizes the low-frequency vibration activation lever in environment of living in to swing, by lever, vibration is put on to giant magnetostrictive thin film resonator with pulsed impact load, can obtain high initial instant power, efficiency of energy collection is high.Be subject to after each vibratory impulse, spring makes lever self produce decay swing, thereby the driving frequency putting on giant magnetostrictive thin film resonator increases several times than vibration source vibration frequency, each giant magnetostrictive thin film resonator produces again damped vibration after being encouraged, thereby the vibration frequency of the vibration ratio vibration source on giant magnetostrictive thin film resonator improves greatly.By adopting four giant magnetostrictive thin film resonators to be symmetrically arranged in the mode of lever both sides, the once swing of lever can make two giant magnetostrictive thin film resonators be encouraged simultaneously, and thus, efficiency of energy collection is greatly improved.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Fig. 2 is the planar structure schematic diagram of giant magnetostrictive thin film resonator.
Fig. 3 is the threedimensional model schematic diagram of giant magnetostrictive thin film resonator.
Fig. 4 is lever ultra-magnetic telescopic energy gathering apparatus operating state 1.
Fig. 5 is lever ultra-magnetic telescopic energy gathering apparatus operating state 2.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the lever ultra-magnetic telescopic energy gathering apparatus that is suitable for harvest energy from low-frequency vibration described in the utility model is described in detail:
As shown in Figure 1, four giant magnetostrictive thin film resonators 1 are symmetrically distributed in lever Shang Xia the 2 and left and right sides, and be fixedly mounted on wall base 7; Lever 2 mid points are connected by pin with rocker bar bearing 3, and lever 2 can swing up and down around bearing pin, and the mass 4 that weight does not wait is installed at lever 2 two ends; Rocker bar bearing 3 is fixedly mounted on pedestal 6; Lever left side is fixed in spring 5 one end, and the other end is fixed on pedestal 6.In the time that pedestal 6 is subject to vibratory impulse, the mass 4 that lever 2 two ends weight do not wait can make lever 2 imbalances, swings up and down, thereby giant magnetostrictive thin film resonator 1 is produced to pulsed excitation; In the 1 quilt impact of giant magnetostrictive thin film resonator and damped vibration, because the piezomagnetic effect of giant magnetostrictive material produces changes of magnetic field, then based on electromagnetic induction principle, the magnetic field of variation makes generation induced electromotive force in closing coil, thereby externally exports electric energy.
Lever should have certain rigidity, and the mass that two ends add varies in weight, and while making lever be subject to vibrating, swings in non-equilibrium state; Mass should have certain anti-wear performance, and easily and copper layer be rigidly connected.Can be by the resonance frequency of the quality adjustment giant magnetostrictive thin film resonator of change mass.
As shown in Figure 2, in giant magnetostrictive thin film resonator 1, copper layer 11 left end are fixed in wall base 7, and right-hand member and mass 13 are rigidly connected and are integrated, and giant magnetostrictive thin film 11 is bonded on copper layer 12; Coil rack 10 is enclosed within on giant magnetostrictive thin film 11 and copper layer 12, and is connected on wall base 7 by trip bolt 8; Induction coil 9, on coil rack 10, and is external to regulating circuit, is then connected on mems device or accumulator.
It shown in Fig. 3, is the threedimensional model schematic diagram of giant magnetostrictive thin film resonator.Giant magnetostrictive thin film is lamellar, is pasted on copper layer.This material has piezomagnetic effect, and also referred to as Villari effect, the effect that giant magnetostrictive material is subject to power deforms, and can cause that the magnetized state of material changes, and internal magnetic field distributes and changes.If there is induction coil giant magnetostrictive rod outside, will produce induced electromotive force.
Shown in Fig. 4, be lever ultra-magnetic telescopic energy gathering apparatus operating state 1, vibration source swings lever 2, and to Right deviation, spring tension, applies impact to the giant magnetostrictive thin film resonator of upper left and bottom right.
Shown in Fig. 5, be lever ultra-magnetic telescopic energy gathering apparatus operating state 2, vibration source swings lever 2, inclines to the left, and spring pressurized, applies impact to the giant magnetostrictive thin film resonator of lower-left and upper right.
Claims (1)
1. a lever ultra-magnetic telescopic energy gathering apparatus, comprise four giant magnetostrictive thin film resonators, lever, rocker bar bearing, mass, spring and pedestals, it is characterized in that: four giant magnetostrictive thin film resonators are symmetrically distributed in lever both sides, every side has two, the swing of lever is limited between two giant magnetostrictive thin film resonators of homonymy, and giant magnetostrictive thin film resonator is fixedly mounted on wall base; Lever mid point is connected by pin with rocker bar bearing, and lever swings up and down around bearing pin, the mass that lever two ends erection weight does not wait; Rocker bar bearing is fixedly mounted on pedestal; Lever one side is fixed in spring one end, and the other end is fixed on pedestal;
Described giant magnetostrictive thin film resonator comprises trip bolt, induction coil, coil rack, giant magnetostrictive thin film, copper layer and mass; Copper layer one end is fixed in wall base, and the other end and mass are rigidly connected and are integrated, and giant magnetostrictive thin film is bonded on copper layer; Coil rack is enclosed within on giant magnetostrictive thin film and copper layer, and is connected on wall base by trip bolt; Induction coil, on coil rack, and is external to regulating circuit, is then connected on mems device or accumulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320894781.4U CN203708140U (en) | 2013-12-31 | 2013-12-31 | Lever type giant magnetostrictive vibration energy collecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320894781.4U CN203708140U (en) | 2013-12-31 | 2013-12-31 | Lever type giant magnetostrictive vibration energy collecting device |
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| Publication Number | Publication Date |
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| CN203708140U true CN203708140U (en) | 2014-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320894781.4U Expired - Fee Related CN203708140U (en) | 2013-12-31 | 2013-12-31 | Lever type giant magnetostrictive vibration energy collecting device |
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| CN (1) | CN203708140U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103762888A (en) * | 2013-12-31 | 2014-04-30 | 杭州电子科技大学 | Lever-type giant magnetostriction vibration energy collecting device |
| CN108716521A (en) * | 2018-06-01 | 2018-10-30 | 中国人民解放军海军工程大学 | A kind of energy gathering apparatus based on nonlinear energy trap |
-
2013
- 2013-12-31 CN CN201320894781.4U patent/CN203708140U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103762888A (en) * | 2013-12-31 | 2014-04-30 | 杭州电子科技大学 | Lever-type giant magnetostriction vibration energy collecting device |
| CN108716521A (en) * | 2018-06-01 | 2018-10-30 | 中国人民解放军海军工程大学 | A kind of energy gathering apparatus based on nonlinear energy trap |
| CN108716521B (en) * | 2018-06-01 | 2020-08-25 | 中国人民解放军海军工程大学 | Vibration energy collecting device based on nonlinear energy trap |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20161231 |
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| CF01 | Termination of patent right due to non-payment of annual fee |