CN107968491B - A kind of multiple degrees of freedom energy transmission and conversion equipment based on ultrasonic wave and flexible metal arms - Google Patents
A kind of multiple degrees of freedom energy transmission and conversion equipment based on ultrasonic wave and flexible metal arms Download PDFInfo
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- CN107968491B CN107968491B CN201711324534.XA CN201711324534A CN107968491B CN 107968491 B CN107968491 B CN 107968491B CN 201711324534 A CN201711324534 A CN 201711324534A CN 107968491 B CN107968491 B CN 107968491B
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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
Abstract
The invention belongs to non-electrical to contact electric energy transmission technology field, provide a kind of multiple degrees of freedom energy transmission and conversion equipment based on ultrasonic wave and flexible metal arms, including energy emission system, energy transform device and energy acceptance system.Energy transform device includes transmitting transducer, receives energy converter and metal arm.Wherein, transmitting transducer is identical with energy converter is received, and is all made of piezoelectric ceramic transducer structure, the two is connected by metal arm, the direction of metallic walls and angle can change, and make transmitting transducer and receive energy converter presentation multiple degrees of freedom, realize multi-direction energy transmission.The present invention using non-electrical based on ultrasound contact electric energy transmission technology, effectively solve the problems, such as inductively technology and resonant coupling techniques be lost in water it is larger, may be harmful to the human body and can not be propagated in metal enclosed container；Impedance matching is carried out to transmitting transducer and reception energy converter respectively, reduces reactive loss, improves the transmittability and efficiency of transmission of system.
Description
Technical field
The invention belongs to non-electrical to contact electric energy transmission technology field, be related to a kind of based on ultrasonic wave and flexible metal arms
Multiple degrees of freedom energy transmission and conversion equipment.
Background technique
By way of conducting wire powering load and by battery powering load being all common powering load.In water
Under, oil field, under mine these particular surroundings, load be usually it is mobile, since motion range is bigger, not using conducting wire power supply
It is too real, and conducting wire abrasion is likely to result in using conducting wire power supply, and then will cause electric leakage, bring security risk.For close
It the use of conducting wire is that load supplying is even more very tired for the intracorporal Medical Devices of closed loop border such as people or closed canister
It is difficult.The deficiency that can solve conducting wire power supply is powered to load using battery, but battery charges still to battery after exhausting
It needs charger and battery has electrical contact, it is still inconvenient when charging the battery in above-mentioned environment or be easy to happen electric leakage
Accident.
The method for contacting transmission electric energy using non-electrical, i.e., convert electrical energy into the energy of other forms, so in emitting side
It is transmitted afterwards by certain medium or coupled modes, converts electric energy for the energy of other forms again in receiving side, and then give
Load supplying charges for battery, because plug etc. is electrical when effectively can solve to charge the battery under above-mentioned particular surroundings in this way
Contact possible security risk.From the point of view of research both domestic and external, the major way of the transmission electric energy of non-electrical contact at present is
Magnetic field coupling-type and field coupling formula.These modes mainly using magnetic field or electric field as transmission medium, are converted electrical energy into emitting side
For electric field energy or magnetic field energy, convert electric energy for the energy received again in receiving side, then powering load or be battery
Charging, to realize the non-electrical contact transmission of energy.However, larger, energy is generally lost in the magnetic field of high frequency or electric field in water
It is not high to measure efficiency of transmission；The magnetic field of high frequency or electric field may be harmful to the human body；Due to the electromagnetic shielding action of metal, electric field energy
Or magnetic field energy can not be propagated in closed metal.Non-electrical contact transmission is carried out using ultrasonic wave mode, can effectively be solved
The drawbacks of transmitting powder technology by the non-electrical contact of electric and magnetic fields.Ultrasonic wave is a kind of mechanical wave, can in water, it is empty
In gas, the medium various Propagations of metal, good directionality, be not present energy barrier the problem of, it is harmless.But it is super
When sound wave is propagated in the medium, since wavelength is very short, thus directionality is very strong.It is used for charging for load supplying or battery
When, it needs the emitting side of electric energy and receives side position to just, it is very stringent to status requirement.The present invention is connected using flexible metal arms
The contact energy multiple degrees of freedom transmission of ultrasonic wave non-electrical may be implemented in the mode for connecing two ultrasonic transducers.Due to ultrasonic wave
The distance dependent that the power and ultrasonic wave transmitted in non-electrical contact electric energy transmission passes through, so flexible metal arm lengths fixation can
When guaranteeing charging every time, transmission performance is almost the same.For in underwater, mine, oil field and human body, the medium closed environment of metal
In electrical equipment for, load or charger charging when no longer need to be moved to accurate position, only need it is close to each other, in
Between be attached by the mobile flexible metal arms of multiple degrees of freedom may be implemented, then make by the sonic wave guide of flexible metal arms
With can steadily be charged, the effect of " i.e. to be to fill " is realized.Present invention eliminates due to relative position need to be kept to fix
The step of moving repeatedly electrical equipment or charging equipment, working efficiency is improved.
Summary of the invention
It is difficult to it is an object of the present invention to solve existing ultrasonic type non-electrical contact electric energy transmission technology transmitting with reception
The problem of alignment, the device may be implemented the contact electric energy multiple degrees of freedom transmission of ultrasonic type non-electrical, simplify charging process.
In order to achieve the above object, the technical solution adopted by the present invention is that:
A kind of multiple degrees of freedom energy transmission and conversion equipment based on ultrasonic wave and flexible metal arms, including energy transmitting system
System, energy transform device and energy acceptance system.
The energy emission system includes ultrasonic power and transmitting terminal impedance matching circuit.Ultrasonic power is used for as hair
It penetrates energy converter and the electric energy of supersonic range, including power frequency supply, rectification circuit, inverter circuit and PWM generation circuit and drive is provided
Dynamic circuit.Power frequency supply provides required electric energy for entire circuit, and the alternating current that rectification circuit provides power frequency supply is converted to
Direct current supplies inverter circuit, and the DC inversion that rectification obtains is sent into impedance matching circuit after the exchange of high frequency by inverter circuit.
The PWM wave that PWM generation circuit generates moves the switch work of inverter circuit through overdrive circuit rear-guard.
The transmitting terminal impedance matching circuit includes a capacitor or an inductance or multiple connected in series and parallel
Capacitor and inductor combination structure, specific constructive form are codetermined by transmitting transducer parameter and required impedance.Emit end resistance
Anti- match circuit one end is connect with inverter circuit, and the other end is connect with transmitting transducer.Transmitting terminal impedance matching circuit is for subtracting
Capacitive characteristics bring reactive loss and impedance transformation is carried out in the small transmitting transducer course of work, makes transmitting transducing adjusted
Device input impedance is suitable purely resistive impedance, realizes that energy transmits on demand.Make to emit by transmitting terminal impedance matching network
The equivalent input impedance of energy converter is transformed to purely resistive and equal with the internal resistance of ultrasonic power, to reduce nothing caused by capacitor
Function is lost and realizes maximum power transfer.
The energy transform device includes transmitting transducer, flexible metal arms and reception energy converter.Transmitting transducer and energy
The transmitting terminal impedance matching network connection for measuring emission system, is converted into using the electric energy that inverse piezoelectric effect provides ultrasonic power
Mechanical energy, then blazed abroad in the form of ultrasonic wave from the contact surface of transmitting transducer and metal medium.Receive energy converter and energy
Measure the receiving-end impedance matching network connection of reception system, the ultrasonic wave that will be transmitted along flexible metal arms using piezoelectric effect
Energy is converted into electric energy, then the positive and negative electrode by receiving energy converter is output to next stage circuit.
The transmitting transducer uses piezoelectric ceramic transducer, and structure includes pretightning force bolt, back shroud, electrode
Piece, piezoelectric ceramic piece and front shroud.The back shroud material is steel；Electrode slice material is copper, to emit or receiving transducing
Device introduces or output electric energy；Front shroud material is aluminium.The structure of the reception energy converter and the structure of transmitting transducer are complete
Unanimously, every technical parameter is identical, for realizing the close coupling of energy.
The transmitting transducer is connected with reception energy converter by flexible metal arms, and the direction of flexible metal arms and angle can
To change, makes transmitting transducer and receive energy converter presentation multiple degrees of freedom, realize multi-direction energy transmission.The flexible metal
Arm can be formed by one with the curved metal bar of multiple degrees of freedom, or by more one direction metal bars and multiple attachment device groups
At.Wherein, flexible metal arms and transmitting transducer, receive between the front shroud of energy converter through thread ring connection.Flexible gold
Belong to arm two sides and have a thread ring, transmitting transducer receives before the front shroud of energy converter and has screw thread, by thread ring and spiral shell
Rotation lantern ring can be in close contact after line alignment.The following are two kinds of typical flexible metal arm configurations:
The first, by three, individually unidirectional metal bar and two connection screw thread bend pipes form flexible metal arms.In the group
At in the flexible metal arms of mode, it is connected respectively by connection screw thread bend pipe between every two transmission metal bars, connection screw thread is curved
Pipe can be rotated with any angle, made transmitting transducer and received the multi-direction and multi-angle of energy converter presentation, realize and be based on ultrasonic wave
With the multiple degrees of freedom energy transmission and conversion of flexible metal arms.
Second, flexible metal arms are made of three unidirectional metal bars.Wherein, a metal bar two sides are set there are two recessed
Slot；The connection metal ball of any direction rotation is capable of in setting in groove, and connection metal ball and one end of other two metal bars connect
It connects, the other end of two metal bars is connect with transmitting transducer and reception energy converter.In the flexible metal arms of the building form,
Connection metal ball can rotate in any direction in groove, so as to so that transmitting transducer and reception energy converter presentation are multi-direction
And multi-angle, and then realize multiple degrees of freedom energy transmission and conversion based on ultrasonic wave and flexible metal arms.
The energy acceptance system includes receiving-end impedance match circuit, rectification circuit and load.Receiving-end impedance matching
Circuit is connected with energy converter is received, and the rectification circuit ac voltage rectifier that will be obtained after matching that is connected with impedance matching circuit is straight
It is connected after stream with load, i.e., the high-frequency ac voltage that impedance matching circuit exports is adjusted to steady dc voltage by rectification circuit
And it exports and is used for load.Receiving-end impedance match circuit is used to adjust the output impedance for receiving energy converter, hinders it with load
It is anti-to match.The receiving-end impedance match circuit includes a capacitor or an inductance or multiple connected in series and parallel
Capacitor and inductor combination structure, specific constructive form are codetermined by reception transducer parameters and required impedance.
The beneficial effects of the present invention are:
1) it is connected between transmitting transducer and reception energy converter using flexible metal arms, realizes the multiple degrees of freedom of energy
Transmission makes transmitting transducer and receives energy converter not by stringent alignment constraint, improves transmitting and receive the flexible of relative position
Property；
2) it uses non-electrical based on ultrasound and contacts electric energy transmission technology, efficiently solve magnetic field coupling technology and electricity
Generally loss is not high compared with die energy transmission efficiency in water for the magnetic field of field coupling technique medium-high frequency or electric field, may have to human body
The problem of doing harm to and can not being propagated in closed metal due to the electromagnetic shielding action electric field energy or magnetic field energy of metal；
3) it to transmitting transducer and receives energy converter and has carried out impedance matching respectively, reduce reactive loss, improve and be
The transmittability and efficiency of transmission of system；
4) flexible metal arm lengths are fixed, and keep transmission range of the ultrasonic wave between two energy converters certain, ensure that every
Transmission performance is almost the same when secondary charging.
Detailed description of the invention
Fig. 1 is present system functional block diagram.
Fig. 2 is the structure chart of transmitting transducer.
Fig. 3 (a) is flexible metal arms structure chart when energy converter is parallel；Fig. 3 (b) is flexibility when energy converter has certain space angle
Metal arm structure chart.
Fig. 4 (a) is the oblique clock synchronization flexible metal arms structure chart of energy converter；Flexible metal arms knot when Fig. 4 (b) is energy converter face
Composition.
Fig. 5 is the equivalent circuit and impedance transformer network illustraton of model of transmitting transducer.
Fig. 6 is the equivalent circuit and impedance transformer network illustraton of model for receiving energy converter.
In figure: 1 transmitting transducer；2 flexible metal arms；3 receive energy converter；4 pretightning force bolts；5 back shrouds；6 electrode slices；
7 front shrouds；8 piezoelectric ceramic pieces.
Specific embodiment
With reference to the accompanying drawings of the specification and technical solution, a specific embodiment of the invention and working principle are made further
It is described in detail.
As shown in Figure 1, a kind of multiple degrees of freedom energy transmission based on ultrasonic wave and flexible metal arms includes with conversion equipment
Power frequency supply, rectification circuit, inverter circuit, PWM generation circuit, driving circuit, transmitting terminal impedance matching circuit, transmitting transducer
1, flexible metal arms 2, reception energy converter 3, receiving-end impedance match circuit, regulator rectifier circuit and load.The work that power supply provides
Frequency alternating current is converted to high-frequency alternating current through over commutation, inverter circuit, and high-frequency alternating current passes through 1 impedance matching of transmitting transducer
Circuit is tuned to be converted with impedance, is finally loaded on transmitting transducer 1.Transmitting transducer 1 will be electric using inverse piezoelectric effect
It can be converted into mechanical energy, energy is penetrated metal medium in the form of ultrasonic wave and is transmitted to receiving end.It receives energy converter 3 and utilizes piezoelectricity
Effect converts electric energy for mechanical energy and realizes that energy passes through the non-electrical contact transmission of flexible metal arms 2, then passes through rectifying and voltage-stabilizing
Circuit carries out rectification and pressure stabilizing, and stable power output is finally provided to load.
As shown in Fig. 2, the ultrasonic transducer be piezoelectric ceramic transducer, mainly by pretightning force bolt 4, back shroud 5,
Copper electrode piece 6, front shroud 7, piezoelectric ceramic piece 8 form, and pretightning force bolt 4 passes through the back shroud 5 being arranged successively from top to bottom, electricity
It is connected through a screw thread after pole piece 6, piezoelectric ceramic piece 8 with 7 top of front shroud.Transmitting transducer 1 and reception energy converter 3 in the present invention
Every technical parameter should be consistent, to realize the close coupling of energy.For guarantee energy converter working efficiency and service life,
The working frequency of ultrasonic power should be also consistent with the resonance frequency of energy converter as far as possible.6 material of electrode slice is copper, for hair
It penetrates or receives energy converter 3 and introduce or export electric energy.5 material of back shroud is steel, and 7 material of front shroud is aluminium.
As shown in figure 3, in the energy transform device, the energy transform device flexible metal arms 2 by three metal bars and
Two connection screw thread bend pipe compositions.Transmitting transducer 1 is connected with reception energy converter 3 by flexible metal arms 2, two screw thread bend pipes
It can rotate to realize that energy is transmitted to multiple degrees of freedom in any direction.Direction in Fig. 3 (a) is flexible gold when energy converter is parallel
Belong to 2 structure chart of arm, the direction in Fig. 3 (b) is 2 structure chart of flexible metal arms when energy converter has certain space angle.
As shown in figure 4, the energy transform device flexible metal arms 2 are by three unidirectional metals in the energy transform device
Stick composition: a metal bar two sides are set there are two groove；The connection metal ball of any direction rotation, connection are capable of in setting in groove
Metal ball is connect with one end of other two metal bars, the other end and transmitting transducer 1 and reception energy converter 3 of two metal bars
Connection.Connection metal ball can rotate in any direction in groove, so as to so that transmitting transducer 1 and reception energy converter 3 are in
Existing multi-direction and multi-angle, and then realize multiple degrees of freedom energy transmission and conversion based on ultrasonic wave and flexible metal arms 2.Fig. 4
(a) direction in is oblique 2 structure chart of clock synchronization flexible metal arms of energy converter, flexible metal arms 2 when the direction in Fig. 4 (b) is face
Structure chart.
As shown in figure 5, electromechanics equivalent electricity of the transmitting transducer 1 near resonance frequency can be obtained by acousto-electro-mechanical analogue
Road.The working frequency of energy converter isMake the equivalent inpnt of transmitting transducer 1 by series-parallel inductance, capacitor
Impedance is transformed to suitable purely resistive impedance, to reduce capacitor Cp1Caused reactive loss simultaneously realizes required power transmission.
Herein, inductance L in parallelp1As impedance inverter circuit, in addition there are the transformation of L series impedance, the transformation of LC series impedance, LCL
The impedance inverter circuit that the combination of other capacitors, inductance and capacitor and inductor such as impedance transformation is constituted.
As shown in fig. 6, being based on mechanism of the same race, electro-mechanical equivalent circuit of the energy converter 3 near resonance frequency can must be received.It connects
It receives the every equivalent parameters of energy converter 3 and transmitting transducer 1 is consistent, again may be by series-parallel inductance, capacitor reduces Cp2Cause
Reactive loss and match the equivalent output impedance of energy converter with load impedance.Herein, inductance L in parallelp2As impedance
Translation circuit, in addition there are L series impedance transformation, LC series impedance transformation, LCL impedance transformation etc. other capacitors, inductance and
The impedance inverter circuit that the combination of capacitor and inductor is constituted.
Claims (6)
1. a kind of multiple degrees of freedom energy transmission and conversion equipment based on ultrasonic wave and flexible metal arms, which is characterized in that described
Multiple degrees of freedom energy transmission and conversion equipment include energy emission system, energy transform device and energy acceptance system；
The energy emission system includes ultrasonic power and transmitting terminal impedance matching circuit；Ultrasonic power is used to change for transmitting
Energy device (1) provides the electric energy of supersonic range；The transmitting terminal impedance matching circuit include a capacitor or an inductance or
The multiple connected capacitors and inductor combination structure in series and parallel of person, specific constructive form is by transmitting transducer (1) parameter and required
Impedance codetermines；The equivalent input impedance of transmitting transducer (1) is set to be transformed to purely resistive by transmitting terminal impedance matching circuit
And it is equal with the internal resistance of ultrasonic power, reduce reactive loss caused by capacitor and realizes maximum power transfer；
The energy transform device includes transmitting transducer (1), flexible metal arms (2) and receives energy converter (3), flexible metal arms
(2) with transmitting transducer (1), receive and connect between the front shroud (7) of energy converter (3) by thread ring；Transmitting transducer (1)
It connect with the transmitting terminal impedance matching circuit of energy emission system, is turned using the electric energy that inverse piezoelectric effect provides ultrasonic power
Mechanical energy is turned to, then is blazed abroad in the form of ultrasonic wave from transmitting transducer (1)；Receive energy converter (3) and energy acceptance system
The receiving-end impedance match circuit of system connects, will be along the ultrasonic energy that flexible metal arms (2) transmit using piezoelectric effect
It is converted into electric energy, then is output to next stage circuit by receiving energy converter (3)；The transmitting transducer (1) is made pottery using piezoelectricity
Porcelain energy converter, the structure for receiving energy converter (3) is identical as the structure of transmitting transducer (1) and every technical parameter, for realizing
The close coupling of energy；The direction of the flexible metal arms (2) and angle can change, and make transmitting transducer (1) and receive transducing
Multiple degrees of freedom is presented in device (3), realizes multi-direction energy transmission；The flexible metal arms (2) by one can multiple degrees of freedom it is curved
Bent metal bar composition, or be made of more one direction metal bars and multiple attachment devices；
The energy acceptance system includes receiving-end impedance match circuit, rectification circuit and load；Receiving-end impedance match circuit
It is connected with energy converter (3) are received, for adjusting the output impedance for receiving energy converter (3), it is made to match with load impedance；Rectification
Circuit be connected with impedance matching circuit by the ac voltage rectifier obtained after matching be direct current after with load be connected；The reception
Terminal impedance match circuit includes a capacitor or an inductance or multiple connected capacitors and inductor combination structure in series and parallel,
Specific constructive form is codetermined by reception energy converter (3) parameter and required impedance.
2. a kind of multiple degrees of freedom energy transmission and converting means based on ultrasonic wave and flexible metal arms according to claim 1
It sets, which is characterized in that the flexible metal arms (2) are made of three unidirectional metal bars and two connection screw thread bend pipes；At this
In the flexible metal arms (2) of building form, it is connected respectively by connection screw thread bend pipe between every two transmission metal bars, connects spiral shell
Line bend pipe can any angle rotation, make transmitting transducer (1) and receive energy converter (3) present multi-direction and multi-angle, realization
Multiple degrees of freedom energy transmission and conversion based on ultrasonic wave and flexible metal arms (2).
3. a kind of multiple degrees of freedom energy transmission and converting means based on ultrasonic wave and flexible metal arms according to claim 1
It sets, which is characterized in that the flexible metal arms (2) are made of three unidirectional metal bars；Wherein, a metal bar two sides are equipped with
Two grooves；The connection metal ball of any direction rotation, connection metal ball and other two metal bars are capable of in setting in groove
The other end of one end connection, two metal bars is connect with transmitting transducer (1) and reception energy converter (3)；In the building form
In flexible metal arms (2), connect metal ball in groove can any direction rotation, so as to make transmitting transducer (1) and
It receives energy converter (3) and multi-direction and multi-angle is presented, and then realize the multiple degrees of freedom energy for being based on ultrasonic wave and flexible metal arms (2)
Amount transmission and conversion.
4. a kind of multiple degrees of freedom energy transmission based on ultrasonic wave and flexible metal arms according to claim 1 or 2 or 3 with
Conversion equipment, which is characterized in that the ultrasonic power includes that power frequency supply, rectification circuit, inverter circuit and PWM are generated
Circuit and driving circuit；Power frequency supply provides required electric energy, the exchange that rectification circuit provides power frequency supply for entire circuit
Electricity is converted to direct current supply inverter circuit, and the DC inversion that inverter circuit obtains rectification is feeding impedance after the exchange of high frequency
With circuit；The PWM wave that PWM generation circuit generates moves the switch work of inverter circuit through overdrive circuit rear-guard.
5. a kind of multiple degrees of freedom energy transmission based on ultrasonic wave and flexible metal arms according to claim 1 or 2 or 3 with
Conversion equipment, which is characterized in that the piezoelectric ceramic transducer includes pretightning force bolt (4), back shroud (5), electrode slice
(6), piezoelectric ceramic piece (8) and front shroud (7)；Back shroud (5) material is steel；Electrode slice (6) material is copper, for transmitting
Or it receives energy converter (3) and introduces or export electric energy；Front shroud (7) material is aluminium.
6. a kind of multiple degrees of freedom energy transmission and converting means based on ultrasonic wave and flexible metal arms according to claim 4
It sets, which is characterized in that the piezoelectric ceramic transducer includes pretightning force bolt (4), back shroud (5), electrode slice (6), piezoelectricity
Potsherd (8) and front shroud (7)；Back shroud (5) material is steel；Electrode slice (6) material is copper, is changed to emit or receiving
It can device (3) introducing or output electric energy；Front shroud (7) material is aluminium.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711324534.XA CN107968491B (en) | 2017-12-13 | 2017-12-13 | A kind of multiple degrees of freedom energy transmission and conversion equipment based on ultrasonic wave and flexible metal arms |
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| CN201711324534.XA CN107968491B (en) | 2017-12-13 | 2017-12-13 | A kind of multiple degrees of freedom energy transmission and conversion equipment based on ultrasonic wave and flexible metal arms |
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| Publication Number | Publication Date |
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| CN107968491A CN107968491A (en) | 2018-04-27 |
| CN107968491B true CN107968491B (en) | 2019-07-16 |
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| CN201711324534.XA Active CN107968491B (en) | 2017-12-13 | 2017-12-13 | A kind of multiple degrees of freedom energy transmission and conversion equipment based on ultrasonic wave and flexible metal arms |
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| CN114142628A (en) * | 2021-12-06 | 2022-03-04 | 西安交通大学 | Ultrasonic isolation type power supply device for high-voltage power system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6127942A (en) * | 1998-10-27 | 2000-10-03 | The Aerospace Corporation | Ultrasonic power sensory system |
| CN105406611A (en) * | 2015-10-28 | 2016-03-16 | 中国人民解放军国防科学技术大学 | Device and method of determining through-metal wall ultrasonic sound wireless energy transmission channel optimization frequency |
| CN106208412A (en) * | 2016-07-20 | 2016-12-07 | 大连理工大学 | A kind of single conductor electrical power transmission system utilizing space resonance electric field |
-
2017
- 2017-12-13 CN CN201711324534.XA patent/CN107968491B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6127942A (en) * | 1998-10-27 | 2000-10-03 | The Aerospace Corporation | Ultrasonic power sensory system |
| CN105406611A (en) * | 2015-10-28 | 2016-03-16 | 中国人民解放军国防科学技术大学 | Device and method of determining through-metal wall ultrasonic sound wireless energy transmission channel optimization frequency |
| CN106208412A (en) * | 2016-07-20 | 2016-12-07 | 大连理工大学 | A kind of single conductor electrical power transmission system utilizing space resonance electric field |
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