CN107246911A - A kind of passive detection device of utilization piezoelectric structure - Google Patents
A kind of passive detection device of utilization piezoelectric structure Download PDFInfo
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- CN107246911A CN107246911A CN201710434701.XA CN201710434701A CN107246911A CN 107246911 A CN107246911 A CN 107246911A CN 201710434701 A CN201710434701 A CN 201710434701A CN 107246911 A CN107246911 A CN 107246911A
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- piezoelectric
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- piezoelectric element
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- 238000001514 detection method Methods 0.000 title claims abstract description 70
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 239000000919 ceramic Substances 0.000 claims description 8
- 239000002033 PVDF binder Substances 0.000 claims description 3
- 229910003781 PbTiO3 Inorganic materials 0.000 claims description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 125000002573 ethenylidene group Chemical group [*]=C=C([H])[H] 0.000 claims description 3
- 238000003475 lamination Methods 0.000 claims description 3
- 229920000620 organic polymer Polymers 0.000 claims description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 2
- 239000011787 zinc oxide Substances 0.000 claims 1
- 238000001125 extrusion Methods 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 8
- 230000003137 locomotive effect Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002305 electric material Substances 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 230000000116 mitigating effect Effects 0.000 description 2
- 239000002952 polymeric resin Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000002459 sustained effect Effects 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000010041 electrostatic spinning Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
- G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
- G01H11/08—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means using piezoelectric devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
- H02N2/186—Vibration harvesters
Abstract
The invention discloses a kind of passive detection device of utilization piezoelectric structure, constituted by power supply, the detection means being powered and by the radio transmitting device that detection signal outwards launches transmission, it is characterised in that with least one piezoelectric structure detection unit；In piezoelectric structure detection unit, the integument 101 of piezoelectric 102 and outer layer is posted on the integument 101 of piezoelectric element as piezoelectric element as the detection chip integrated 103 of detection and signal wireless transmission device.The present invention plays energy supply while can playing a part of vibration and noise reducing in former mechanism, the mechanical energy of vibration-extrusion is converted into electric energy output power supply by wherein piezoelectric patches.The present invention be can be applicable in the mechanical devices such as track train, automobile, aircraft, and the vibration that application device is formed is used and detects correlation properties.
Description
Technical field
The passive detection device of piezoelectric structure is the present invention relates to the use of, will more particularly to the mechanical energy conversion produced be vibrated
For the passive detection device of electric energy.
Background technology
Mechanical vibrational energy is a kind of form of energy of generally existing in environment, the vibration source ratio of lasting or interim sustained vibration
Relatively enrich, such as produced in vibration, human motion and vehicle travel process that household electrical appliance and the equipment of industrial product are produced when working
Raw vibration, bridge vibration of beam etc..These usual energy are wasted because of ignoring or absorbed by shock mitigation system.Therefore,
The vibrational energy in environment is changed into electric energy by vibration energy collector to power for low power dissipation electron equipment, energy is not only increased
The comprehensive utilization ratio of amount, and new green power supply system is provided for low power dissipation electron equipment, to wireless sensor network, just
The development and application of the low power dissipation electron equipment such as portable device are significant.
At present, vibrational energy, which is converted into the principle that the generator of electric energy utilized, mainly electrostatic induction, electromagnetic induction, electrostatic
Impulse generator etc..However, the electrostatic induction electricity generator invented, due to needing access external power source as startup voltage,
And what electrostatic energy collecting device was produced is high voltage, low current and high output impedance, is limited to a certain extent quiet
The application of electric-type energy collection technology.Electrostatic pulse generator is not enough in terms of miniaturization and lightweight, output work
Rate density is smaller, it is impossible to meet the need for being collected to various vibration mechanical energies.
The content of the invention
The vibrational energy of rail locomotive, aviation aircraft etc. form can be converted into the pressure of electric energy the present invention relates to a kind of
The passive detection device of electric structure, detects that low-power consumption detection devices such as acceleration, vibration frequency etc. provide the passive detection of matching.
To achieve the above object, the specific device that provides of the present invention is：
A kind of passive detection device of utilization piezoelectric structure, believes by power supply, the detection means being powered and by detection
Number outwards transmitting transmission radio transmitting device constitute, with least one piezoelectric structure detection unit；In piezoelectric structure detection
In unit, the integument 101 of piezoelectric 102 and outer layer is used as detection and signal wireless transmission device as piezoelectric element
Detection chip integrated 103 is posted on the integument 101 of piezoelectric element.
Further, in the structure with multiple piezoelectric elements, the piezoelectric structure detection unit has more than one
Piezoelectric element, piezoelectric element lamination near vibration source installed, and the electric energy of each piezoelectric element output is input to and to each piezoelectricity
Component output electric energy is managed the PMU of adjustment and is that the detection and signal are wirelessly transferred dress after its adjustment
Offer electric energy is provided；The PMU, which can also be integrated in the inspection piezoelectric structure detection unit, has more than one piezoelectricity
Component, piezoelectric element lamination near vibration source is installed, and the electric energy of each piezoelectric element output is input to and defeated to each piezoelectric element
Go out electric energy be managed the PMU of adjustment and through its adjustment after be it is described detection and signal wireless transmission device provide
Electric energy；The PMU can be also integrated in detection chip integrated 103.
So, detection chip integrated 103 is supplied electricity to by the vibration of piezoelectric 102.
The piezoelectric 102, selected from vinylidene (PVDF), zinc oxide (ZnO), PZT piezoelectric ceramics, PbTiO3 systems pressure
The piezo-electricity composite material that electroceramics and inorganic piezoelectric ceramics and organic polymer resin are constituted, can according to different structure designs and
Different Parameter Conditions select one of which or several piezoelectrics or piezo-electricity composite material, and pass through hydro-thermal method, collosol and gel
The techniques such as method, pulsed deposition method, electrostatic spinning carry out controllable preparation.
The piezoelectric 102, can regulate and control its pattern and performance, to obtain by the control of relevant parameter in preparation technology
The optimal piezoelectric of actual conditions must be applied to.
Integrated the 103 of the power supply management module apparatus, its major function is with the friendship produced by deformation by piezoelectric
Varying electrical signals can be that rear end electric capacity or electricity consumption are set by rectifier bridge rectifying and wave-filtering and DC-DC transfer circuit (DC-DC) output
The direct current of available electricity.Its selected rectifier bridge, not only directly can use diode (1N4146) to build, and can also use business
Integrated full-bridge chip (DB107), it might even be possible to directly support the use the commercial chip (LTC3588) with low-voltage lock function
Deng progress power management.
The piezoelectric in the presence of extraneous vibration, piezoelectric in a certain direction by external force effect and
Polarization phenomena can be produced during deformation, inside it, while there is positive and negative opposite electric charge on its two apparent surfaces, there is pulse
Electric signal output, is supplied electricity to detection means and is caused change by the magnetic flux of coil by power management module, thus
There is pulse electrical signal output, pulse signal supplies electricity to detection means and wireless launcher by power management module.
Compared with prior art, the present invention has following beneficial effect：
1st, it is power supply that the present invention, which provides piezoelectric structure, relative to external power supply, and design and processing time consuming are cumbersome, device
Performance is unstable, and practicality of the invention is stronger, and the detection being highly profitable still can be kept to believe while greatly reducing cost
Number output.
2nd, the passive and wireless sensing construction unit for the rectangular profile that the present invention is provided, tested therefore, it is possible to effectively reduce
The noise of measurement equipment, is simultaneously effective changed into electric energy by vibration mechanical energy.
3rd, support kernel, plastics or specific rubber conduct are used as using the piezoelectric with certain mechanical strength and elasticity
Matrix, it is with low cost.
4th, the present invention's is simple in construction, and preparation method is simple, can be by nature, track etc. to material without particular/special requirement
The vibrational energy of generation is changed into electric energy, with extensive practical use.
Brief description of the drawings
By shown in accompanying drawing, above and other purpose of the invention, feature and advantage will become apparent from.In whole accompanying drawings
Identical reference indicates identical part.Deliberately accompanying drawing is not drawn by actual size equal proportion scaling, it is preferred that emphasis is show
Go out the purport of the present invention.
Fig. 1 is the structural representation of passive detection device of the present invention；
Fig. 2, Fig. 3 and Fig. 4 are the structural model figure of generator embodiment two of the present invention；
Fig. 5 is the structural model figure of generator embodiment three of the present invention；
Fig. 6 adds instance graph for the multilayer of the present invention；
Fig. 7 is the supporting electric power management circuit figure of the present invention.
Embodiment
Mechanical vibrational energy is a kind of form of energy of generally existing in environment, the vibration source ratio of lasting or interim sustained vibration
Relatively enrich, such as vibration that household electrical appliance and the equipment of industrial product are produced when working etc..These usual energy because ignore and by
Waste or absorbed by shock mitigation system.Therefore, the vibrational energy in environment is changed into electric energy by vibration energy collector is
Low power dissipation electron equipment is powered, and not only increases the comprehensive utilization ratio of energy, and provide newly for low power dissipation electron equipment
Green power supply system, it is significant to wireless senser, the development of passive detection and application.
The embodiment of passive detection device of the present invention is discussed in detail with reference to the accompanying drawings and examples.Embodiment
One：
Referring to Fig. 1, in any passive detection apparatus structure, including：Piezoelectric 102, lapping 101, detection dress
Put, integrated the 103 of wireless transmission and power supply management module apparatus；Detection means and nothing are supplied electricity to by the vibration of piezoelectric 102
Detection data are transferred to radio receiver by integrated the 103 of line emitter.
Wherein lapping 101, which is selected, has certain mechanical strength, when detection means is acted on (effect of vibration) by external force,
So that up-down vibration occurs for piezoelectric 102, thus there is pulse electrical signal output.
In the passive detection device of the present invention, the selection of the material of piezoelectric 102 is selected from vinylidene (PVDF), oxidation
Zinc, PZT piezoelectric ceramics, PbTiO3The Piezoelectric anisotropy material that series piezoelectric ceramic and inorganic piezoelectric ceramics and organic polymer resin are constituted
Material.102 piezoelectrics are power generation part in the passive detection device of the present invention, and 103 be power management, detection means and wireless hair
The integration section of injection device.
The electric generator structure of the present invention is simple, and preparation method is simple, to material without particular/special requirement, in actual use, only
Simply it need to be fixed and be encapsulated, you can applied in living environment, collect the generations such as nature, track, plant equipment
Vibration mechanical energy, with extensive practical use.
Embodiment two：
With reference to Fig. 2, Fig. 3 and Fig. 4, the structure of piezoelectric structure passive detection device in the present embodiment is specifically introduced.
Referring to Fig. 2, piezoelectric is symmetrical two-part structure in piezoelectric TRT.Referring to Fig. 3, in pressure
One beam arm 201 is set in the middle of electric material, increases the Oscillation Amplitude of piezoelectric, output electric energy will be significantly increased.Ginseng
Fig. 4 is examined, is power management, detection means and wireless launcher on the upside of piezoelectric structure, this structure effectively reduces whole
The dimensional structure of body, makes passive detection device become one to greatest extent so that applicability of the present invention is stronger, with extensive
Application prospect.
Embodiment three：
The wheel in rail locomotive is practiced to upper, as shown in figure 5, multiple piezoelectric elements are adjacent near vibration source
Install.Multiple piezoelectric element applications are in vibration source, and its electric energy converges to a detection chip collection for being integrated with PMU
In into 103 (detection chip integrated 103 is also posted on the integument 101 of certain piezoelectric element).
Example IV：
With reference to Fig. 6, in the present embodiment, multi-layer piezoelectric folded structures, wherein the superimposed layer in superposition number of plies n ﹥ 1, Fig. 6
Number is n=10.This multi-level piezoelectric structure passive detection device, can both provide the output of larger electricity, can lead to again
Cross the function that noise reduction is played in multi-level superposition.In Fig. 6, the wheel in rail locomotive will be originally practiced to upper so that the present invention
Using the passive detection device of piezoelectric structure, the vibration of igneous rock cracks can be both detected, making an uproar in locomotive operation can be reduced again
Sound.
With reference to Fig. 7, electric power management circuit is specifically introduced.The present invention devises the power supply of efficiently double synchro switch collections
Circuit (Fig. 7) is managed, the transducer of this utilization piezoelectric is equivalent to current source (I1) and electric capacity respectively in the circuit
Pattern and voltage source (V1), resistor (R1) and inductance (L2) series connection that the parallel connection of device (C1) is connected with inductance (L1) again
Pattern, is connected with follow-up full bridge rectifier (D1, D2) by switching (J1, J2), is given respectively by diode (D3, D4) respectively
Primary energy electric capacity (Cint) charges, and reaches after certain threshold value, includes inductance to follow-up accumulator by controlling switch (J3)
(L3), diode (D5), capacitor (Cstorage) and Rload fictitious load electrical appliances are passed through.Then using soft or hard combination
Flexible FPC circuit packages, electric power management circuit is integrated in the generator designed by invention, obtains the optimal power supply efficiency of management
Management circuit.
In the present embodiment, on the basis of second embodiment, passive detection device is applied into rail locomotive, with reference to Fig. 5,
Passive detection device is applied to the wheel of rail locomotive to vibration detection.Both passive detection, and energy can be carried out to vibration using wheel
Enough play a part of reducing noise.
In the passive detection device of various embodiments of the present invention, vibrating machine structure that can be in mechanical device, such as fly
The data of correlation can be detected in device in vibrational structure using passive detection device, its security is improved.For in security
In applicability, the present invention is with a wide range of applications.
Find, work as in the real work that is chosen at of the piezoelectric of various embodiments of the present invention in the research process of inventor
In, different piezoelectrics have a great impact to real output.With the increase of the piezoelectric property of piezoelectric, load two
The electric signal increase at end, and the piezoelectric property for choosing piezoelectric is relatively low, the electric signal of output is weaker.Therefore, the present invention is in pressure
In the selection of electric material, the operating power size according to detection device.It should be noted that " output work used herein
Rate ", refers to the product of the maximum of pulse current and the maximum of the pulse voltage formed at load two ends, i.e., instantaneous greatly work(
Rate.
The above described is only a preferred embodiment of the present invention, not making any formal limitation to the present invention.Appoint
What those skilled in the art, without departing from the scope of the technical proposal of the invention, all using the side of the disclosure above
Method and technology contents make many possible variations and modification to technical solution of the present invention, or are revised as the equivalent reality of equivalent variations
Apply example.Therefore, every content without departing from technical solution of the present invention, the technical spirit according to the present invention is done to above example
Any simple modifications, equivalents, and modifications, still fall within technical solution of the present invention protection in the range of.
Claims (7)
1. a kind of passive detection device of utilization piezoelectric structure, by power supply, the detection means being powered and signal will be detected
Outwards the radio transmitting device of transmitting transmission is constituted, it is characterised in that with least one piezoelectric structure detection unit；In piezoelectricity
In structure detection unit, the integument (101) of piezoelectric (102) and outer layer as piezoelectric element, as detection and signal without
The detection chip integrated (103) of line transmitting device is posted on the integument (101) of piezoelectric element.
2. the passive detection device of utilization piezoelectric structure according to claim 1, it is characterised in that the piezoelectric structure inspection
Surveying unit has more than one piezoelectric element, and piezoelectric element is installed near vibration source, and the electric energy of each piezoelectric element output is defeated
Enter to each piezoelectric element output electric energy be managed the PMU of adjustment and through its adjustment after be it is described detection and
Signal wireless transmission device provides electric energy；The PMU can be also integrated in detection chip integrated (103).
3. the passive detection device of utilization piezoelectric structure according to claim 1, it is characterised in that the piezoelectric element exists
It is adjacent near vibration source to install.
4. the passive detection device of utilization piezoelectric structure according to claim 1, it is characterised in that the piezoelectric element exists
Vibration source nearby install by lamination.
5. the passive detection device of utilization piezoelectric structure according to claim 1, it is characterised in that the piezoelectric choosing
From vinylidene PVDF, zinc oxide, PZT piezoelectric ceramics, PbTiO3 series piezoelectric ceramics, inorganic piezoelectric ceramics, organic polymer tree
One of piezo-electricity composite material that fat is constituted.
6. the passive detection device of utilization piezoelectric structure according to claim 1, it is characterised in that the power management list
Member, detection means and wireless base station apparatus become one.
7. the passive detection device of utilization piezoelectric structure according to claim 1, it is characterised in that the piezoelectric
Centre sets a beam arm (201).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710434701.XA CN107246911A (en) | 2017-06-09 | 2017-06-09 | A kind of passive detection device of utilization piezoelectric structure |
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| CN201710434701.XA CN107246911A (en) | 2017-06-09 | 2017-06-09 | A kind of passive detection device of utilization piezoelectric structure |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109149741A (en) * | 2018-08-02 | 2019-01-04 | 哈尔滨工程大学 | A kind of self-powered trouble-shooter and method based on piezoelectric effect |
| CN109579977A (en) * | 2018-12-07 | 2019-04-05 | 金华伏安光电科技有限公司 | A kind of faint acoustic detector based on graphene |
| CN110793620A (en) * | 2019-11-28 | 2020-02-14 | 长安大学 | Noise detection device and detection method |
| CN112403091A (en) * | 2020-11-17 | 2021-02-26 | 王洁鸿 | Rotating wheel core-changing type filter with blocking alarm function |
| CN114123441A (en) * | 2018-11-06 | 2022-03-01 | 武汉领普科技有限公司 | Self-powered method and device based on polarity detection |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109149741A (en) * | 2018-08-02 | 2019-01-04 | 哈尔滨工程大学 | A kind of self-powered trouble-shooter and method based on piezoelectric effect |
| CN114123441A (en) * | 2018-11-06 | 2022-03-01 | 武汉领普科技有限公司 | Self-powered method and device based on polarity detection |
| CN114123441B (en) * | 2018-11-06 | 2024-03-15 | 武汉领普科技有限公司 | Polarity detection-based self-powered method and device |
| CN109579977A (en) * | 2018-12-07 | 2019-04-05 | 金华伏安光电科技有限公司 | A kind of faint acoustic detector based on graphene |
| 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 |
| CN112403091A (en) * | 2020-11-17 | 2021-02-26 | 王洁鸿 | Rotating wheel core-changing type filter with blocking alarm function |
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