CN108593091A - A kind of fault diagnosis and health monitoring device based on piezoelectric vibration energy collection - Google Patents
A kind of fault diagnosis and health monitoring device based on piezoelectric vibration energy collection Download PDFInfo
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- CN108593091A CN108593091A CN201810532472.XA CN201810532472A CN108593091A CN 108593091 A CN108593091 A CN 108593091A CN 201810532472 A CN201810532472 A CN 201810532472A CN 108593091 A CN108593091 A CN 108593091A
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- cantilever beam
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- 230000036541 health Effects 0.000 title claims abstract description 21
- 238000012806 monitoring device Methods 0.000 title claims abstract description 18
- 238000003745 diagnosis Methods 0.000 title claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 46
- 239000002033 PVDF binder Substances 0.000 claims abstract description 34
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims abstract description 34
- 238000006243 chemical reaction Methods 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 230000003321 amplification Effects 0.000 claims description 3
- 238000003491 array Methods 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000005265 energy consumption Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 8
- 238000012544 monitoring process Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 2
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 241001274660 Modulus Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000002305 electric material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000003862 health status Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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 present invention provides a kind of fault diagnosis collected based on piezoelectric vibration energy and health monitoring device,Including box body,The frequency collection device and circuit-switched portions being arranged in box body,Indicator light array on a surface of box body is set,The frequency collection device includes the cantilever beam fixed plate being arranged on cartridge inner surface,Cantilever array in cantilever beam fixed plate is set,Cantilever beam clump weight on the free end of each cantilever beam of cantilever array is set,PVDF piezoelectric materials on the upper surface of each cantilever beam of cantilever array are set,PVDF piezoelectric material electrodes are also respectively connected in the upper and lower surface of PVDF piezoelectric materials,The middle part in box body is arranged in the circuit-switched portions,And circuit-switched portions connect PVDF piezoelectric materials electrode and corresponding indicator light,The number of indicator light is equal with the number of cantilever beam.Apparatus of the present invention are simple in structure, small volume, have energy consumption low, manufacturing cost is low, feature pollution-free and with long service life.
Description
Technical field
The present invention relates to a kind of fault diagnosis collected based on piezoelectric vibration energy and health monitoring devices, belong to industrial life
The health monitoring field of equipment in production.
Background technology
In industrial production, equipment even running is needed, when equipment some critical components loosen or certain devices occur
Damage, equipment it is possible that high vibration even disintegrate, when equipment breaks down vibration frequency will change and pair add
Work precision has an impact, or even causes life threat to production operation personnel.When equipment occurs abnormal, if hair that can be as early as possible
It is existing, loss can be reduced.Therefore, the health monitoring of equipment is just particularly important.
Mostly use sensor, the application of sensor the information measured can will be needed to be converted into and can measure in alarm
Electric signal or other forms signal, the normal operation of monitoring device, but traditional health monitoring device need to carry out it is single
Solely the output signal of power supply and sensor needs special reception device, the piezoelectric effect of this patent application piezoelectric material, pressure
The deformation of electric material can produce electricl energy, and this electric energy can be used as power supply, and piezoelectric material generating capacity and the intensity of vibration have
It closes, when the quantity of electric charge reaches threshold values, circuit conversion device can convert electric energy, the case where being connected to LED state indicator light
Under, by judging that the light on and off of indicator light may determine that the vibration frequency of testee, carry out the health monitoring of equipment.
Apparatus of the present invention are simple in structure, small volume, external power supply need not be added to power, and need not install battery, also not
It needs to be used cooperatively with special signal receiving device.Therefore low with consuming energy, manufacturing cost is low, pollution-free and service life
Long feature.
Invention content
The purpose of the invention is to provide a kind of fault diagnosis collected based on piezoelectric vibration energy and health monitoring dress
It sets, using the piezoelectric effect of PVDF piezoelectric materials, converts the vibrational energy of equipment to electric energy, driven by circuit-switched portions
LED state indicator light works, and achievees the purpose that go wrong and alarm.
The object of the present invention is achieved like this：Including box body, the frequency collection device being arranged in box body and circuit conversion
Partly, indicator light array on a surface of box body is set, the frequency collection device includes being arranged on cartridge inner surface
Cantilever beam fixed plate, be arranged in cantilever beam fixed plate cantilever array, each cantilever beam in cantilever array is set
Free end on cantilever beam clump weight, the PVDF piezoresistive materials that are arranged on the upper surface of each cantilever beam of cantilever array
PVDF piezoelectric material electrodes are also respectively connected in the upper and lower surface of material, PVDF piezoelectric materials, and the circuit-switched portions setting exists
Middle part in box body, and circuit-switched portions connection PVDF piezoelectric materials electrode and corresponding indicator light, in indicator light array
The number of indicator light is equal with the number of the cantilever beam in cantilever array.
The invention also includes some such structure features：
1. indicator light array, cantilever array are 4*4 arrays.
2. the circuit-switched portions include the mounting plate that middle part is arranged in box body, are arranged in the circuit modulus installed
Conversion module and charge amplification module.
3. the material of cantilever beam is copper or steel.
Compared with prior art, the beneficial effects of the invention are as follows：It is a primary object of the present invention to monitor production equipment
Vibration frequency, when equipment breaks down, the operation of equipment can deviate normal working frequency, at this time can be by alarm
The luminous situation of status indicator lamp judges the unusual condition of equipment, to be overhauled in time to equipment, avoids more serious
Loss.
It converts the mechanical energy that vibration in equipment operation generates to electric energy by the piezoelectric effect of PVDF piezoelectric materials, this
Kind alarm does not need externally fed, eliminates the application of chemical cell or the replacement of chemical cell, avoids chemical cell
The pollution brought.
Vibration frequency fault diagnosis and the frequency collection device of health monitoring device, circuit transform portion, state can be referred to
Show that lamp part carries out overall package or detached, it is flexible and changeable in structure, it is highly practical.
By changing the size (length, width, thickness of cantilever beam etc.) of single cantilever beam in cantilever array and changing
The intrinsic frequency of cantilever beam can be changed by becoming the clump weight quality of cantilever beam free end, so as to change fault diagnosis and health
The size of monitoring device test frequency.The quantity of cantilever beam in cantilever array can also be changed, change fault diagnosis and be good for
The corresponding frequency bandwidth of health monitoring device.
Description of the drawings
Fig. 1 is the overall structure figure of the present invention；
Fig. 2 is the overall structure figure (not plus head cover) of the present invention；
Fig. 3 is the frequency collection device in the present invention；
Fig. 4 is the circuit-switched portions of the present invention；
Fig. 5 is the status indicator lamp part of the present invention；
Symbol description:1- frequency collections device, 2- cantilever beams fixed board, 3- cantilever arrays, 4- cantilever beams clump weight, 5-
PVDF piezoelectric materials, 6-PVDF piezoelectric materials electrode, 7- circuit-switched portions, 10- charges amplification module, 11- circuit moduluses turn
Change the mold block, 8- status indicator lamps array, 9- box bodys.
Specific implementation mode
Present invention is further described in detail with specific implementation mode below in conjunction with the accompanying drawings.
The present invention includes frequency collection device 1, circuit-switched portions 7, LED state indicator light 8.Frequency collection device 1 is by leading
Line is attached with circuit-switched portions 7, and circuit-switched portions 7 carry out the electric energy to be converted to corresponding LED state indicator light 9 and carry
Judge the vibration frequency of monitored equipment by observing the light on and off of LED state indicator light 8 for electric energy.
Frequency collection device 1 include cantilever beam fixed board 2 and same riser on cantilever array 3, each cantilever beam into
Row digital number.Each cantilever beam structure its width, thickness in cantilever array 2 are differed with length, the table of cantilever beam
PVDF piezo-electric generatings material 5 is pasted in face, and the end of cantilever beam is furnished with the cantilever beam clump weight 4 of different quality, to reduce cantilever beam
Intrinsic frequency, make the intrinsic frequency between each cantilever beam at gradient by the size and the quality of clump weight that change cantilever beam
Increase, makes the frequency of entire cantilever array that there is very wide frequency band.Namely the structure size of each cantilever beam is different, intrinsic frequency
Rate is different, then can change the linear increase of intrinsic frequency of parameter (width, thickness, length) setting cantilever beam.
PVDF piezoelectric materials are pasted in the upper surface of each cantilever beam, in each PVDF piezoelectric materials for pasting cantilever beam
5 upper and lower surface pastes two leads by conductive silver glue, and the electric energy that it generates piezoelectric effect is made to be exported by lead.Two
Conducting wire causes to be pasted onto cantilever beam as extraction electrode when cantilever array is vibrated jointly with tested production equipment
On piezoelectric patches be deformed.Due to the piezoelectric effect of piezoelectric patches, charge generation is had.When some in piezoelectric cantilever beam array is outstanding
Arm beam will cause to resonate when close with the vibration frequency of monitored equipment, and PVDF piezoelectric materials is made to generate maximum mechanical-electric coupling,
The quantity of electric charge of generation is maximum.
What is be connected with two electrodes of piezoelectric material is the circuit-switched portions of alarm, and circuit-switched portions 7 include electricity
Lotus amplifier section 10 and analog-to-digital conversion part 11, the charge that can generate PVDF piezoelectric materials is amplified, and carries out rectification,
Allow the charge that piezoelectric material generates that the LED state indicator light of alarm to be driven to work, namely realizes PVDF piezoelectricity
The electric energy that material generates is amplified and is converted so that LED state indicator light 8 works.
The LED state indicator light part of alarm, including a LED light array, quantity and the frequency of indicator light are adopted
The number of cantilever beam is equal in storage, and each indicator light carries out digital number, the label of each indicator light and cantilever beam
Label corresponds to, each cantilever beam in cantilever array is individually powered to corresponding LED state indicator light.Namely indicator light
Array is LED light array corresponding with cantilever array, and each cantilever beam structure corresponds to a LED light, as finger
Show signal.
Can be by frequency collection device 1, circuit-switched portions 7, LED state indicator light 8 is encapsulated in box 9, makes structure more
Step up to gather, volume can be reduced in this way, and increase the globality of equipment, when use can be by equipment under test and piezo alarm device
Between be fixed by screw bolt and nut, the surface of equipment under test can also be pasted with seccotine, it is quick and easy for installation.Also
Can by the frequency collection device of fault diagnosis and health monitoring device and circuit-switched portions and LED state indicator light part into
Frequency collection device and circuit-switched portions are fixed to principal vibration component inside tested equipment, state instruction by row separation
Lamp is placed on the place that operating personnel are easy to observation, such as device housings.
Alarm and monitored equipment can be installed together with bolts and nuts, it is higher in vibration frequency
It can be closely coupled.
Fig. 1 is fault diagnosis and the overall structure figure of health monitoring device, it includes frequency collection device shown in Fig. 3, Fig. 4
Shown in circuit-switched portions, LED state indicator light shown in fig. 5 part composition.
Frequency collection device 1 is by cantilever beam fixed board 2, cantilever array 3, cantilever beam clump weight 4, PVDF piezoelectric patches first
5 compositions.Cantilever array 3 is fixed on cantilever beam fixed board 2 by specific constructive form, cantilever array 3 by 4*4 cantilever
Beam array forms.Each the width of cantilever beam, height and length are different, the surface mount PVDF piezoelectric materials 5 of cantilever beam,
The free end of cantilever beam is furnished with the cantilever beam clump weight 4 of different quality, and cantilever beam is reduced by increasing cantilever beam clump weight 4
Intrinsic frequency makes the intrinsic frequency between each cantilever beam by changing the size of cantilever beam and the quality of cantilever beam clump weight 4
Increase at gradient, makes the frequency of entire cantilever array 3 that there is very wide frequency band, each cantilever beam to carry out digital number.
Can increase in specific implementation process the cantilever beam number either reduced in cantilever array 3 reach increase or
Reduce the frequency bandwidth of vibration frequency alarm, realizes the function of specifically being adjusted according to specific works situation.Cantilever beam
Beam body selects copper product or Steel material.
It is required for pasting one piece of PVDF piezoelectric material 5 in the upper surface of each cantilever beam, each of cantilever array 3 is outstanding
Between arm beam and PVDF piezoelectric materials 5 firm pasting is carried out with resin glue.Two conducting wires are pasted onto with conductive silver glue respectively
Electrode 6 of two surfaces up and down of PVDF piezoelectric materials 5 as PVDF piezoelectric materials.
When under the influence of tested measurement equipment forced oscillation occurs for the cantilever beam in the cantilever array 3 in frequency collection device
Dynamic, the PVDF piezoelectric materials 5 pasted on a cantilever beam will be deformed, since PVDF piezoelectric materials 5 have piezoelectric effect, this
When in PVDF piezoelectric materials electrode 6 have charge output.Since the generation of the quantity of electric charge is related to the intensity of vibration, vibration is stronger
It is more to generate charge.So when a certain cantilever beam is close with monitored equipment vibration frequency, cantilever beam can resonate, at this time
The quantity of electric charge of output is maximum.
The flow of charge circuit-switched portions 7 that PVDF piezoelectric materials 5 export, circuit-switched portions 7 include that charge amplifies mould
The charge that PVDF piezoelectric materials 5 generate can be amplified, is whole by block 10 and circuit analog-to-digital conversion part 11, circuit-switched portions
Stream, filtering etc., and the electric energy that piezoelectric material generates is powered after processing for status indicator lamp 8.
Status indicator lamp 8 is made of LED light, and LED light is LED light array corresponding with cantilever array, each LED light into
The LED light of row digital number, each digital number corresponds to a cantilever beam, when wherein a certain cantilever beam since resonance produces electricl energy
When more than a certain threshold values, a wherein corresponding LED light will be lighted by carrying out processing by circuit-switched portions 7, pass through judgement
The light on and off of LED light judge the vibration frequency of monitored equipment.
Frequency collection device 1, circuit-switched portions 7, status indicator lamp array 8 are encapsulated into box 9, frequency collection device is solid
It is scheduled on inner surface after box 9, circuit-switched portions 6 are fixed in the middle part of box, and status indicator lamp is fixed on the front surface of box.This
Sample can increase the globality of alarm, when use can by the box body 9 of alarm by bolts and nuts with monitored equipment
It is connected, the surface of monitored equipment can also be pasted onto with seccotine, it is easy for installation.
Sometimes it is to keep monitoring result more accurate, needs principal vibration component inside monitoring device, it at this time can be by frequency
Collector 1, circuit-switched portions 7 are individually encapsulated together, principal vibration component inside monitored equipment are fixed on, by LED shapes
State indicator light array 8 is connected by conducting wire, is positioned over the place that Observation personnel is easily observed that, such as the shell of equipment, in this way
Internal accurate monitoring may be implemented.
This alarm material therefor is simple, cheap, uses the piezoelectric effect of piezoelectric material, need not additionally be supplied
Electricity saves the energy, can be to being detected measurement equipment by the light on and off state of LED light it may determine that the vibration frequency of equipment under test
Play the purpose constantly monitored.
To sum up, the invention discloses a kind of fault diagnosis being directed to the monitoring of production equipment vibration frequency and health monitoring dresses
It sets, wherein fault diagnosis and health monitoring device include frequency collection device, circuit-switched portions, LED state indicator light array.Frequently
Rate collecting part is made of the cantilever array for pasting PVDF piezoelectric materials, width, thickness and the length difference of each cantilever beam,
It is furnished with cantilever beam clump weight in the end of cantilever beam, each cantilever beam structure is made to possess different intrinsic frequencies.Work as testee
It just will appear covibration when close with one of cantilever beam intrinsic frequency, since the piezoelectric effect of piezoelectric material just has electricity
Lotus generates, and the quantity of electric charge that while resonating generates reaches maximum.Charge can export electric energy by circuit-switched portions conversion,
To make LED state indicator light corresponding with cantilever beam light.By the light on and off of a certain LED state indicator light of determination, obtain by
Survey the vibration frequency of object this moment, the health status of diagnostic device.
Claims (5)
1. a kind of fault diagnosis collected based on piezoelectric vibration energy and health monitoring device, it is characterised in that：Including box body, set
The indicator light array set frequency collection device and circuit-switched portions in box body, be arranged on a surface of box body, it is described
Frequency collection device includes the cantilever beam fixed plate being arranged on cartridge inner surface, the cantilever beam battle array being arranged in cantilever beam fixed plate
The cantilever beam clump weight that arrange, is arranged on the free end of each cantilever beam of cantilever array is arranged in the every of cantilever array
PVDF piezoresistive materials are also respectively connected in the upper and lower surface of PVDF piezoelectric materials on the upper surface of a cantilever beam, PVDF piezoelectric materials
Expect electrode, the middle part in box body is arranged in the circuit-switched portions, and circuit-switched portions connect PVDF piezoelectric material electrodes
It is equal with the number of the cantilever beam in cantilever array with the number of corresponding indicator light, the indicator light in indicator light array.
2. a kind of fault diagnosis collected based on piezoelectric vibration energy according to claim 1 and health monitoring device,
It is characterized in that：Indicator light array, cantilever array are 4*4 arrays.
3. a kind of fault diagnosis collected based on piezoelectric vibration energy according to claim 1 or 2 and health monitoring device,
It is characterized in that：The circuit-switched portions include the mounting plate that middle part is arranged in box body, are arranged in the circuit mould installed
Number conversion module and charge amplification module.
4. a kind of fault diagnosis collected based on piezoelectric vibration energy according to claim 1 or 2 and health monitoring device,
It is characterized in that：The material of cantilever beam is copper or steel.
5. a kind of fault diagnosis collected based on piezoelectric vibration energy according to claim 3 and health monitoring device,
It is characterized in that：The material of cantilever beam is copper or steel.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810396129 | 2018-04-28 | ||
| CN2018103961297 | 2018-04-28 |
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| Publication Number | Publication Date |
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| CN108593091A true CN108593091A (en) | 2018-09-28 |
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| CN201810532472.XA Pending CN108593091A (en) | 2018-04-28 | 2018-05-29 | A kind of fault diagnosis and health monitoring device based on piezoelectric vibration energy collection |
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Cited By (3)
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| CN110282526A (en) * | 2019-06-24 | 2019-09-27 | 山东科技大学 | A kind of lift sensor piezo-powered system |
| CN111750981A (en) * | 2020-07-22 | 2020-10-09 | 西安交通大学 | Transformer vibration acceleration detection system, control method and device |
| CN112117932A (en) * | 2020-09-02 | 2020-12-22 | 广州大学 | Power generation device and health monitoring equipment using same |
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| CN112117932A (en) * | 2020-09-02 | 2020-12-22 | 广州大学 | Power generation device and health monitoring equipment using same |
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Application publication date: 20180928 |
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