CN108183561A - A kind of pipeline wireless energy collection method based on time reversal - Google Patents
A kind of pipeline wireless energy collection method based on time reversal Download PDFInfo
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/15—Circuit arrangements or systems for wireless supply or distribution of electric power using ultrasonic waves
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- 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
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
A kind of pipeline wireless energy collection method based on time reversal.Device used in this method includes power supply, signal generating circuit, excitation piezoelectric ceramics, metallic conduit, receives piezoelectric ceramics, energy recovering circuit and energy-storage travelling wave tube composition；Effect of the present invention：Using the supersonic guide-wave in metallic conduit as the carrier of energy, energy transmission can be wirelessly carried out, is the sensor power supply on metallic conduit, reduces wiring and the maintenance cost of conventional sensor system, improves the stability of system；Using piezoelectric ceramics as chief component, conversion efficiency is high, small, at low cost；Transmitting signal form is determined by the method for time reversal, compensates for the power dissipation that dispersion phenomenon is brought, the energy of excitation can be made in metallic conduit while focused on, makes system efficiency of transmission higher.
Description
Technical field
The invention belongs to ultrasonic wireless energy collection technology field, more particularly to a kind of pipe based on time reversal
Road wireless energy collection method.
Background technology
Since 19th-century, oil and natural gas one is directly subordinate to important energy resources and countries in the world economy hair
The grand strategy resource of exhibition, demand and consumption are always maintained at the growth trend of high speed.China has abundant oil, day
Right gas reserves, using other than marine transportation when import, land major part is by the way of pipeline transportation come transfer oil
And natural gas, this is because oil, natural gas demand are very big, but also with the requirement of the particularity such as safety.Pipeline transportation
With many advantages, such as freight volume is big, security performance is high, uninterrupted and automatic management easy to implement, so being very suitable for stone
The transport of oil, natural gas.Pipeline transportation is the important component of China's comprehensive system of transport, the current oil in China, natural
Feed channel pattern has preliminarily formed, and overall length is more than 100,000 kilometers.
With pipeline transportation oil and natural gas apply increase, because of the particular hazard of oil and gas, some
Risk during transport also gradually shows.Such as in November, 2013, Qingdao of Shandong province Huangdao District sinopec oil pipeline
Rupture, causing large-scale road surface, part crude oil enters Jiaozhou Bay, and causes casualties by crude oil pollution.Pipe leakage
The reason of very complicated, the defects of on the one hand may be pipeline itself, since in those early years pipeline production technology in China's is unqualified, then
In addition the environment that pipeline is laid with is generally all relatively more severe, so pipeline itself will go wrong.On the other hand it is human factor
Influence, after pipeline is laid with, since length of pipeline is long, it is of long duration to be laid with, the management of pipeline will appear very big problem.Separately
Outside, live water power, heating power, road, communication cable etc. are arbitrarily laid with, and the architecture against regulations is arbitrarily built, these all can be to the peace of pipeline
It is complete to generate threat.Also criminal is directed to administrative vulnerability, and directly pipeline is destroyed, it is intended that obtains juice.
It can be seen that the leak detection and monitoring safety status for pipeline are very important.Currently used method
There are model analysis method, fiber laser arrays method, acoustics negative pressure wave method etc..But any method no matter is used, is required on pipeline
Sensor-based system is laid, using sensor-based system that is integrated or being attached in structure, is obtained and structural health phase in real time online
The information of pass, and binding signal information processing method extraction characteristic parameter realize the Gernral Check-up of pipeline and leakage safety inspection
It surveys.One complete sensor-based system needs power cord and data line, not only need expensive power communications cable installation and
Maintenance cost, and because of pipeline more than km, total system stability is also limited with robustness by cable.
Later development goes out wireless sensor technology and tentatively solves problem above, although wireless communication technique is at present
Comparative maturity, but its powerup issue becomes a bottleneck for restricting the development of its technology again.More mature energy supply side is used at present
Case is traditional battery powered, and the shortcomings that program is that cost is higher, battery volume is larger and needs periodic replacement, sensor
Service life be limited to limited electricity.In addition, because pipeline is largely embedded in underground and in wild environment, battery is more
It changes also extremely difficult.
The method that latest developments go out to carry out energy supplement using eco-friendly power sources such as solar energy, encounters in practical applications
Difficulty, because pipeline is largely laid on underground, solar energy equipment needs to arrange on the ground, in certain areas it is difficult to arrange, and
And safeguard that cost is also very high.Meanwhile the method for collecting environmental energy has unstability, when having long in certain areas
Between rainy days, once sensor dead electricity, data may lose with connecting, thus total system can be had an impact.
It is also a kind of to carry out nothing using piezoelectric ceramics at present in the application of the closely energy transmission of metallic sheet stock
The method that heat input is collected, this method utilizes piezoelectric ceramics excitation ultrasound wave, and is propagated in the form of guided wave in the material, another
The collection of energy is carried out at one using piezoelectric ceramics.This method is applied less in the duct, because stress wave is tied in cylinder
In structure propagate will generate multi-modal frequency dispersion effect, be classified into transverse direction, longitudinal direction and bending wave and propagated, every group all there are one
Unique wave mode, the speed of each wave is different, will cause power dissipation in this way, therefore, it is difficult to energy is recycled.
No matter using which kind of principle progress monitoring pipeline safety, problems above limits monitoring pipeline safety side
The development of method so that the maintenance period of total system is short, maintenance cost is high, system stability is poor.
Invention content
To solve the above-mentioned problems, the purpose of the present invention is to provide a kind of pipeline wireless energies based on time reversal
Collection method, to solve the powerup issue when wireless sensor on pipeline carries out wireless energy transfer.
In order to achieve the above object, the pipeline wireless energy collection method based on time reversal includes what is carried out in order
The following steps：
1) the pipeline wireless energy collection system based on time reversal is laid first, and the system includes power supply, signal
Circuit occurs, excitation piezoelectric ceramics, metallic conduit, receives piezoelectric ceramics, energy collection circuit and energy-storage travelling wave tube；Wherein excite
Piezoelectric ceramics and reception piezoelectric ceramics are disposed on the surface of metallic conduit, and on same axial horizontal line, excitation
The upper surface of piezoelectric ceramics and reception piezoelectric ceramics is equipped with top electrode and lower electrode；The positive and negative anodes connection signal of power supply occurs
The feeder ear and ground terminal of circuit；The output terminal of signal generating circuit and ground terminal are respectively with exciting the top electrode of piezoelectric ceramics
It is connected with lower electrode with conducting wire；Receive piezoelectric ceramics top electrode and lower electrode respectively with the input terminal of energy collection circuit and
Ground terminal is connected with conducting wire；The output terminal connection energy-storage travelling wave tube of energy collection circuit；
2) initial parameter setting is carried out to system, the impulse response of metallic conduit is assessed, it is therefore an objective to determined best
Transmission frequency；The white Gaussian noise signal excitation excitation piezoelectric ceramics of peak value 10V is sent out using signal generating circuit, is thus existed
Supersonic guide-wave is inspired in metallic conduit, by transmission, signal is received receiving to obtain at piezoelectric ceramics, to the signal
It carries out Fourier transformation and obtains channel frequency response function, and obtain the centre frequency f of highest-gain；
3) it is excited using the modulation Gaussian pulse s (t) that centre frequency is f as input signal and receives piezoelectric ceramics 5, adjusted
Gaussian pulse s (t) processed can be expressed as：
Wherein, t0It it is the reference time, f is centre frequency, and T is the time cycle of signal, and A is the amplitude of signal；
4) after Gaussian pulse encourages, the supersonic guide-wave of a propagation is generated in the wall of metallic conduit, is pressed by excitation
Electroceramics obtains, which is recorded as r (t)；
5) time series reversion is carried out to signal r (t), obtains pattern field signal x (t)：
X (t)=r (- t) (2)
6) when need carry out energy transmission when open this system, excitation piezoelectric ceramics at pattern field signal x (t) into
Row excitation, in the pressure that the reception piezoelectric ceramics at energy position is needed by the energy of supersonic guide-wave to be converted into that there is potential difference
Electric AC signal is simultaneously exported to energy collection circuit；
7) energy collection circuit is supplied to energy-storage travelling wave tube after above-mentioned piezoelectricity AC signal is carried out rectifying and voltage-stabilizing, for gold
Sensor in metal thin plate structure uses.
The excitation piezoelectric ceramics is identical with piezoelectric ceramics shape is received, using flat disc-shaped piezoelectric ceramics material
Material, and using epoxy resin fitting on metallic conduit.
The excitation piezoelectric ceramics uses the emission type piezoceramic material made of PZT-4 or PZT-8 materials.
The reception piezoelectric ceramics uses the reception type piezoceramic material made of PZT-5 materials.
The top electrode and lower electrode select silver electrode and copper electrode.
The energy-storage travelling wave tube is ultracapacitor or rechargeable lithium battery.
The metallic conduit is using the metal material pipeline including coating steel pipe, copper pipe, conduit peschel, cast iron pipe.
The signal generating circuit is made of microcontroller, DA conversion chips and voltage amplifier.
The energy collection circuit is made of rectifier bridge and filter capacitor.
Pipeline wireless energy collection method provided by the invention based on time reversal has the advantages that：
(1) present invention can wirelessly carry out energy using the supersonic guide-wave in metallic conduit as the carrier of energy
Amount transmission is the sensor power supply on metallic conduit, reduces wiring and the maintenance cost of conventional sensor system, improve
The stability of system.
(2) for the present invention using piezoelectric ceramics as main building block, conversion efficiency is high, small, at low cost.
(3) because transmitting signal form is determined by the method for time reversal, the energy that dispersion phenomenon is brought is compensated for
Dispersion, thus can make the energy of excitation in metallic conduit while focus on, make system efficiency of transmission higher.
Description of the drawings
Fig. 1 is the pipeline wireless energy collection device structure diagram provided by the invention based on time reversal；
Fig. 2 be in the pipeline wireless energy collection device provided by the invention based on time reversal excite piezoelectric ceramics and
Receive piezoceramic structures schematic diagram；
Fig. 3-Fig. 6 show a pipeline wireless energy collection method application example related data based on time reversal
Figure.
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this explanation
Content disclosed by book understands other advantages and function of the present invention easily.The present invention can also pass through in addition different tools
Body embodiment is embodied or practiced, and the various details in this specification can also be based on different viewpoints and application, not have
Various modifications or alterations are carried out under the spirit of the present invention.It should be noted that in the absence of conflict, following embodiment
And the feature in embodiment can be combined with each other.
It should be noted that the diagram provided in following embodiment only illustrates the basic structure of the present invention in a schematic way
Think, component count, shape and size when only display is with related component in the present invention rather than according to actual implementation in schema then
It draws, kenel, quantity and the ratio of each component can be a kind of random change during actual implementation, and its assembly layout kenel
It may also be increasingly complex.
In order to which those skilled in the art is made to better understood when the technical solution in the present invention, here to will be detailed below
The technology being related to makes an explanation explanation.
As shown in Fig. 1-Fig. 3, the pipeline wireless energy collection method provided by the invention based on time reversal includes pressing
The following steps that sequence carries out：
1) the pipeline wireless energy collection system based on time reversal as shown in Figure 1 and Figure 2 is laid first, and described is
System includes power supply 1, signal generating circuit 2, excitation piezoelectric ceramics 3, metallic conduit 4, receives piezoelectric ceramics 5, energy collection circuit
6 and energy-storage travelling wave tube 7；Wherein excitation piezoelectric ceramics 3 and reception piezoelectric ceramics 5 are disposed on the surface of metallic conduit 4, and
On same axial horizontal line, the upper surface of excitation piezoelectric ceramics 3 and reception piezoelectric ceramics 5 is equipped with top electrode 8 and lower electricity
Pole 7；The feeder ear and ground terminal of circuit 2 occur for the positive and negative anodes connection signal of power supply 1；The output terminal of signal generating circuit 2 is with connecing
Ground terminal is connect respectively with the top electrode 8 and lower electrode 9 for exciting piezoelectric ceramics 3 with conducting wire；Receive the top electrode 8 of piezoelectric ceramics 5
It is connect respectively with the input terminal of energy collection circuit 6 and ground terminal with conducting wire with lower electrode 9；The output terminal of energy collection circuit 6
Connect energy-storage travelling wave tube 7；
2) initial parameter setting is carried out to system, the impulse response of metallic conduit 4 is assessed, it is therefore an objective to determined most
Good transmission frequency；The white Gaussian noise signal excitation excitation piezoelectric ceramics 3 of peak value 10V is sent out using signal generating circuit 2, by
This inspires supersonic guide-wave in metallic conduit 4, and by transmission, signal is received receiving to obtain at piezoelectric ceramics 5, right
The signal carries out Fourier transformation and obtains channel frequency response function, and obtain the centre frequency f of highest-gain；
3) it is excited using the modulation Gaussian pulse s (t) that centre frequency is f as input signal and receives piezoelectric ceramics 5, adjusted
Gaussian pulse s (t) processed can be expressed as：
Wherein, t0It it is the reference time, f is centre frequency, and T is the time cycle of signal, and A is the amplitude of signal；
4) after Gaussian pulse encourages, the supersonic guide-wave of a propagation is generated in the wall of metallic conduit 4, by exciting
Piezoelectric ceramics 3 obtains, which is recorded as r (t)；
5) time series reversion is carried out to signal r (t), obtains pattern field signal x (t)：
X (t)=r (- t) (2)
6) when need carry out energy transmission when open this system, excitation piezoelectric ceramics 3 at pattern field signal x (t)
It is excited, the energy of supersonic guide-wave is converted into having potential difference in the reception piezoelectric ceramics 5 at energy position is needed
Piezoelectricity AC signal is simultaneously exported to energy collection circuit 6；
7) energy collection circuit 6 is supplied to energy-storage travelling wave tube 7 after above-mentioned piezoelectricity AC signal is carried out rectifying and voltage-stabilizing, for
Sensor in metal thin plate structure uses.
The excitation piezoelectric ceramics 3 is identical with 5 shape of piezoelectric ceramics is received, using flat disc-shaped piezoelectric ceramics
Material, and using epoxy resin fitting on metallic conduit 4.Purpose using epoxy resin is fixed piezoelectric ceramics, and can be subtracted
Coupling efficiency is improved in few the air gap between piezoelectric ceramics and metallic conduit 4.
The excitation piezoelectric ceramics 3 uses the emission type piezoceramic material made of PZT-4 or PZT-8 materials.
PZT-4 materials have relatively low mechanical loss and dielectric loss, larger exchange depolarization field, and normal with larger dielectric
Number, electromechanical coupling factor and piezoelectric constant, the excitation particularly suitable for highfield, big mechanical activation amplitude use.And PZT-8 materials
With the mechanical loss lower than PZT-4 material and dielectric loss, dielectric constant, mechanical coupling coefficient, piezoelectric constant also compare
PZT-4 materials it is slightly lower, however tensile strength and stability are superior to PZT-4 materials, are also suitable for swashing for high mechanical activation amplitude
It encourages.
The reception piezoelectric ceramics 5 uses the reception type piezoceramic material made of PZT-5 materials.PZT-5 materials
With high electromechanical coupling factor, high-voltage electricity strain constant and high resistivity, each electromechanical parameters have excellent time stability and
Temperature stability, therefore the conversion of low-power resonance and non-resonance energy is used and is all well suited for.
The top electrode 8 and lower electrode 9 select silver electrode and copper electrode.Silver electrode and the parameter difference of copper electrode are not
Greatly, but because silver-colored molecule is more active, penetration is stronger, static capacity bigger, therefore can preferentially select silver electrode.
The energy-storage travelling wave tube 7 is ultracapacitor or rechargeable lithium battery.
The metallic conduit 4 is using the metal material pipeline including coating steel pipe, copper pipe, conduit peschel, cast iron pipe.
The signal generating circuit 2 is made of microcontroller, DA conversion chips and voltage amplifier；Wherein microcontroller
Effect is storage excitation signal, and excitation signal is exported with digital signal form；The effect of DA conversion chips is to turn digital signal
Turn to analog signal；The effect of voltage amplifier is to amplify excitation signal, to encourage piezoelectric ceramics.
The energy collection circuit 6 is made of rectifier bridge and filter capacitor.The effect of wherein rectifier bridge is will to receive to press
The cycle alternating-current voltage that electroceramics 5 exports is converted into that the stable DC voltage used can be stored；Filter capacitor must be sufficiently large
To ensure the basicly stable of output voltage.
Fig. 3-Fig. 6 show a pipeline wireless energy collection method application example related data based on time reversal
Figure, to illustrate the advantageous effect of this method.
In the example metallic conduit 4 be coating steel pipe, a diameter of 30cm；A diameter of 3cm of piezoelectric ceramics excites piezoelectricity
Ceramics 3 select PZT-8 materials, receive piezoelectric ceramics 5 and select PZT-5 materials, select power-on and power-off of the silver electrode as piezoelectric ceramics
Pole material；Piezoelectric ceramics 3 is excited with receiving the distance between piezoelectric ceramics 5 as 10cm；Select 3M companies DP460 epoxy resin
Glue is as piezoelectric ceramics and the plastering agent of metallic conduit 4.
By above-mentioned steps 1) -2) after obtain highest-gain centre frequency f be 100kHz.It is adjusted according to step 3)
Gaussian pulse s (t) processed, as shown in figure 3, excitation receives piezoelectric ceramics 5.
According to step 4) -5), signal r (t) is obtained at excitation piezoelectric ceramics 3, as shown in figure 4, being carried out time sequence
Column inversion is r (- t), as shown in Figure 5 as pattern field signal.
According to step 6) -7), piezoelectric ceramics is being received into row energization to excitation piezoelectric ceramics 3 with the pattern field signal
The voltage that peak value is 2.4V is obtained at 5, as shown in Figure 6.Continuous pump such as is carried out to excitation piezoelectric ceramics 3, can be obtained more steady
Fixed usable electric energy.
In order to which the supersonic guide-wave energy that excitation piezoelectric ceramics 3 excites is enable to reach focusing peak at reception piezoelectric ceramics 5
Value, makes up serious channel dispersion problem in metallic conduit 4, and usage time reversal process of the present invention determines the form of transmitting signal.
White noise is excited from excitation piezoelectric ceramics 3 first, obtains carrying out Fourier transformation after receiving signal at piezoelectric ceramics 5 from receiving,
Channel frequency response function is obtained, observes the best frequency of its signal transmission gain.Using the optimum frequency as modulation Gauss arteries and veins
The centre frequency of punching, from receive piezoelectric ceramics 5 at excited, excitation piezoelectric ceramics 3 receive after, by the signal when
It is inverted on domain to get to excitation signal form.When needing energy supply, activation system to the energy-storage travelling wave tube 7 into
Row energy transmission, to supply sensor use.
Generally speaking, with reference to above-mentioned preferred embodiment, if further to promote the power of wireless energy collection, Ke Yiti
The excitation voltage of high device.By in above preferred embodiment it is recognised that be related to energy convert critical piece be piezoelectricity
Ceramics, therefore higher efficiency can be reached by relatively advanced piezoelectric energy-conversion material or form, for example choose novel height
Piezoelectric modulus composite material, but the cost of whole device can be improved.Energy is higher as needed for system, can also increase excitation piezoelectricity
The quantity of ceramics improves the power of transmission energy in the form of an array.
The principle of the present invention and its effect is only illustrated in above description, and is not intended to limit the present invention.It is any to be familiar with
The personage of this technology all can carry out modifications and changes under the spirit and scope without prejudice to the present invention to above-described embodiment.Cause
This, those of ordinary skill in the art is without departing from disclosed spirit and institute under technological thought such as
All equivalent modifications completed or change should be covered by the claim of the present invention.
Claims (9)
1. a kind of pipeline wireless energy collection method based on time reversal, it is characterised in that：It is described based on time reversal
Pipeline wireless energy collection method includes the following steps carried out in order：
1) the pipeline wireless energy collection system based on time reversal is laid first, and the system includes power supply (1), signal is sent out
Raw circuit (2), metallic conduit (4), receives piezoelectric ceramics (5), energy collection circuit (6) and energy storage member at excitation piezoelectric ceramics (3)
Part (7)；Wherein excitation piezoelectric ceramics (3) and reception piezoelectric ceramics (5) is disposed on the surface of metallic conduit (4), and locate
In on same axial horizontal line, the upper surface of excitation piezoelectric ceramics (3) and reception piezoelectric ceramics (5) be equipped with top electrode (8) and
Lower electrode (7)；The feeder ear and ground terminal of circuit (2) occur for the positive and negative anodes connection signal of power supply (1)；Signal generating circuit (2)
Output terminal and ground terminal connect respectively with the top electrode (8) of excitation piezoelectric ceramics (3) and lower electrode (9) with conducting wire；Receive pressure
The top electrode (8) and lower electrode (9) of electroceramics (5) connect respectively with the input terminal of energy collection circuit (6) and ground terminal conducting wire
It connects；The output terminal connection energy-storage travelling wave tube (7) of energy collection circuit (6)；
2) initial parameter setting is carried out to system, the impulse response of metallic conduit (4) is assessed, it is therefore an objective to determine best pass
Defeated frequency；The white Gaussian noise signal excitation excitation piezoelectric ceramics (3) of peak value 10V is sent out using signal generating circuit (2), thus
Supersonic guide-wave is inspired in metallic conduit (4), by transmission, signal is received receiving to obtain at piezoelectric ceramics (5), it is right
The signal carries out Fourier transformation and obtains channel frequency response function, and obtain the centre frequency f of highest-gain；
3) it is excited using the modulation Gaussian pulse s (t) that centre frequency is f as input signal and receives piezoelectric ceramics (5), modulation is high
This pulse s (t) can be expressed as：
Wherein, t0It it is the reference time, f is centre frequency, and T is the time cycle of signal, and A is the amplitude of signal；
4) after Gaussian pulse encourages, the supersonic guide-wave of a propagation is generated in the wall of metallic conduit (4), by excitation piezoelectricity
Ceramic (3) obtain, which is recorded as r (t)；
5) time series reversion is carried out to signal r (t), obtains pattern field signal x (t)：
X (t)=r (- t) (2)
6) when need carry out energy transmission when open this system, excitation piezoelectric ceramics (3) sentence pattern field signal x (t) into
Row excitation, is converted into having potential difference in the reception piezoelectric ceramics (5) at energy position is needed by the energy of supersonic guide-wave
Piezoelectricity AC signal simultaneously exports and gives energy collection circuit (6)；
7) energy collection circuit (6) is supplied to energy-storage travelling wave tube (7) after above-mentioned piezoelectricity AC signal is carried out rectifying and voltage-stabilizing, for gold
Sensor in metal thin plate structure uses.
2. the pipeline wireless energy collection method according to claim 1 based on time reversal, it is characterised in that：Described
It excites piezoelectric ceramics (3) identical with piezoelectric ceramics (5) shape is received, using flat disc-shaped piezoceramic material, and utilizes
Epoxy resin is bonded on metallic conduit (4).
3. the pipeline wireless energy collection method according to claim 1 based on time reversal, it is characterised in that：Described
Piezoelectric ceramics (3) is excited to use the emission type piezoceramic material made of PZT-4 or PZT-8 materials.
4. the pipeline wireless energy collection method according to claim 1 based on time reversal, it is characterised in that：Described
It receives piezoelectric ceramics (5) and uses the reception type piezoceramic material made of PZT-5 materials.
5. the pipeline wireless energy collection method according to claim 1 based on time reversal, it is characterised in that：Described
Top electrode (8) and lower electrode (9) select silver electrode and copper electrode.
6. the pipeline wireless energy collection method according to claim 1 based on time reversal, it is characterised in that：Described
Energy-storage travelling wave tube (7) is ultracapacitor or rechargeable lithium battery.
7. the pipeline wireless energy collection method according to claim 1 based on time reversal, it is characterised in that：Described
Metallic conduit (4) is using the metal material pipeline including coating steel pipe, copper pipe, conduit peschel, cast iron pipe.
8. the pipeline wireless energy collection method according to claim 1 based on time reversal, it is characterised in that：Described
Signal generating circuit (2) is made of microcontroller, DA conversion chips and voltage amplifier.
9. the pipeline wireless energy collection method according to claim 1 based on time reversal, it is characterised in that：Described
Energy collection circuit (6) is made of rectifier bridge and filter capacitor.
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| CN201810031666.1A CN108183561B (en) | 2018-01-12 | 2018-01-12 | Pipeline wireless energy collection method based on time reversal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810031666.1A CN108183561B (en) | 2018-01-12 | 2018-01-12 | Pipeline wireless energy collection method based on time reversal |
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| CN108183561A true CN108183561A (en) | 2018-06-19 |
| CN108183561B CN108183561B (en) | 2020-12-01 |
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2018
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| CN108183561B (en) | 2020-12-01 |
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