CN103944281A - Energy transmitting terminal and energy wireless transmission method - Google Patents

Abstract

The invention discloses an energy transmitting terminal and an energy wireless transmission method, and relates to the technical field of energy wireless transmission. According to the energy transmitting terminal and the energy wireless transmission method, the optimal segmentation energy transmitting coil is selected according to location information of the energy transmitting terminal, the coefficient of coupling between the segmentation energy transmitting coil and a receiving coil can be increased, the energy transmission efficiency is improved, and electromagnetic radiation received by a patient is reduced; due to the fact that energy supply can be carried out through a portable lithium battery, the patient can be more free.

Description

A kind of energy transmitting terminal and wireless energy transfer method

Technical field

The present invention relates to wireless energy transmission technology field, particularly a kind of energy transmitting terminal and wireless energy transfer method.

Background technology

The appearance of capsule endoscope makes medical science endoscopic technique enter the New Times, and it has not only solved conventional endoscope cannot check the defect at small intestine position, and allows patient's misery greatly reduce.But existing movably implantable medical device has only been equipped with 1 or 2 cameras at present, and can only rely on the wriggling of enteron aisle to carry out passive movement, then takes enteron aisle image.Along with the continuous increase of clinical demand, movably implantable medical device needs integrated more function, for example: realized the wineless endoscope capsule of active movement, carried out the capsule of applying medicines, realized by mechanical device the movably implantable medical device that live body detects by needle tubing by screw.More function causes larger power consumption or larger space, so movably the button cell of implantable medical device inside just can not meet its demand, meanwhile, by wireless energy transfer for implantable medical device movably (for ease of simplifying saying, below be all called " energy receiving terminal ") energy supply be a more promising direction.

By at energy transmitting terminal and energy receiving terminal, one group of coil being set respectively, the coil of transmitting terminal connects power amplifier, and produces alternating electromagnetic field, and the coil of receiving terminal induces electromotive force in alternating electromagnetic field, thus by Energy Transfer to back-end circuit.At present receiving terminal adopts the receiving coil of three-dimensional orthogonal mostly, transmitting terminal mainly contain two kinds of loop constructions, single helical coil and Helmholtz coil.Coupling coefficient between above-mentioned two kinds of transmitting coils and receiving coil is lower, causes wireless energy transmission efficiency lower.Need on the one hand a cable to be connected power supply with equipment, limited patient's freedom; The larger transmitting power of being brought by low transmission efficiency is on the other hand exposed in stronger electromagnetic radiation patient, causes the fail safe of wireless energy transfer to decline.

Summary of the invention

(1) technical problem that will solve

The technical problem to be solved in the present invention is: how to improve wireless energy transmission efficiency, make without adopting cable power supply, and reduce the electromagnetic radiation of wireless energy transfer.

(2) technical scheme

For solving the problems of the technologies described above, the invention provides a kind of energy transmitting terminal, described energy transmitting terminal comprises: multicomponent section energy transmitting coil, energy supply unit, multichannel selected cell, location information acquiring unit and control unit, described location information acquiring unit, control unit, multichannel selected cell and multicomponent section energy transmitting coil are connected successively, described energy supply unit is connected respectively with described multichannel selected cell, control unit and location information acquiring unit

Described location information acquiring unit, for obtaining the positional information of energy receiving terminal;

Described control unit, for reception and according to multichannel selected cell described in described positional information control;

Described multichannel selected cell, under the control of described control unit, selects at least one group of coil in described multicomponent section energy transmitting coil to be communicated with described energy supply unit;

Described multicomponent section energy transmitting coil, in the time being communicated with described energy supply unit, transmitting wireless energy, to ensure radio transmission efficiency.

Wherein, described location information acquiring unit comprises: locator unit and/or receive data by wireless subelement,

Described locator unit, for obtaining the position coordinates of energy receiving terminal;

Described receive data by wireless subelement, for obtaining the wireless energy intensity data of energy receiving terminal.

Wherein, described energy supply unit comprises: power supply, oscillator, power amplifier, impedance matching network and resonant capacitance, described power supply, oscillator, power amplifier, impedance matching network connect successively, described power supply is connected respectively with described control unit, location information acquiring unit and power amplifier, and described resonant capacitance is located between described impedance matching network and described multichannel selected cell or is located between every set of segmentation energy transmitting coil and multichannel selected cell.

Wherein, in the time that described resonant capacitance is located between described impedance matching network and described multichannel selected cell, the quantity of described resonant capacitance is one; Or the quantity of described resonant capacitance is identical and corresponding one by one with the coil quantity of described multicomponent section energy transmitting coil.

Wherein, work as P _optduring for integer, the height H of every set of segmentation energy transmitting coil is all identical;

Work as P _optwhile being not integer, total height is H _tenergy transmitting coil be divided into P _opt1group is highly segmentation energy transmitting coil; Or described total height is H _tenergy transmitting coil be divided into P _opt2group is highly for segmentation energy transmitting coil and the one group of height of H are H ₂segmentation energy transmitting coil;

Wherein, h _tfor the total height of energy transmitting coil, H=0.445R, P _opt1=int<P _opt>, int<x> gets the integer arithmetic symbol nearest apart from x, H ₂=H _t-HP _opt2, R is energy transmitting coil radius, for downward rounding operation symbol.

The invention also discloses a kind of wireless energy transfer method, said method comprising the steps of:

A1: every preset time t, location information acquiring unit is obtained the position coordinates of energy receiving terminal;

A2: control unit judges whether described energy receiving terminal is positioned at the scope of the segmentation energy transmitting coil of below, if so, performs step A4, otherwise execution step A3;

A3: described control unit is determined the nearest segmentation energy transmitting coil of the described energy receiving terminal of distance according to described position coordinates, and control multichannel selected cell, the nearest segmentation energy transmitting coil of the described energy receiving terminal of described distance is communicated with described energy supply unit, to make the nearest segmentation energy transmitting coil of the described energy receiving terminal of described distance carry out work, and return to steps A 1;

A4: using the segmentation energy transmitting coil of described below as current coil, and keep described current coil working to setting-up time, process ends.

The invention also discloses a kind of wireless energy transfer method, said method comprising the steps of:

B1: control unit choose at random except the segmentation energy transmitting coil of the top and the arbitrary segmentation energy transmitting coil the segmentation energy transmitting coil of below as current coil J, and current coil J is communicated with energy supply unit, location information acquiring unit is obtained the wireless energy intensity data E that current coil J is corresponding _j;

B2: after current coil J work preset time t, judge whether current coil J is the top segmentation energy transmitting coil, if, perform step B3, otherwise current coil J work is switched to coil J-1 work by described control unit, and described location information acquiring unit is obtained the wireless energy intensity data E that current coil J-1 is corresponding _j-1, relatively E _jand E _j-1if, E _j-1>E _j, perform step B4, otherwise execution step B3, described coil J-1 is adjacent with described current coil J and is positioned at the segmentation energy transmitting coil of described current coil J top;

B3: described control unit switches to coil J+1 work, and described location information acquiring unit is obtained the wireless energy intensity data E that current coil J+1 is corresponding _j+1, relatively E _jand E _j+1if, E _j+1>E _j, perform step B4, otherwise coil J+1 work is switched to coil J work by described control unit, and return to step B2, described coil J+1 is adjacent with described current coil J and is positioned at the segmentation energy transmitting coil of described current coil J below;

B4: the coil of working is designated as to current coil J, and judges that whether current coil J is the segmentation energy transmitting coil of below, if so, keep described current coil working to setting-up time, process ends, otherwise, return to step B2.

The invention also discloses a kind of wireless energy transfer method, said method comprising the steps of:

C1: control unit choose at random except the segmentation energy transmitting coil of the top and the arbitrary segmentation energy transmitting coil the segmentation energy transmitting coil of below as current coil J, and current coil J is communicated with energy supply unit, location information acquiring unit is obtained the wireless energy intensity data E that current coil J is corresponding _j;

C2: after current coil J work preset time t, described control unit is worked current coil J and coil J-1 simultaneously, and described location information acquiring unit is obtained corresponding wireless energy intensity data E _{j, j-1}, described coil J-1 is adjacent with described current coil J and is positioned at the segmentation energy transmitting coil of described current coil J top;

C3: relatively E _jand E _{j, j-1}if, E _{j, j-1}/ E _j>=1, described control unit only makes coil J-1 work, and described location information acquiring unit is obtained corresponding wireless energy intensity data E _j-1, and perform step C4, otherwise execution step C5;

C4: relatively E _jand E _j-1if, E _j-1/ E _j>=1, perform step C8, otherwise described control unit only makes coil J work, and perform step C8;

C5: described control unit is worked current coil J and coil J+1 simultaneously, described location information acquiring unit is obtained corresponding wireless energy intensity data E _{j, j+1}, described coil J+1 is adjacent with described current coil J and is positioned at the segmentation energy transmitting coil of described current coil J below;

C6: relatively E _jand E _{j, j+1}if, E _{j, j+1}/ E _j>=1, described control unit only makes coil J+1 work, and described location information acquiring unit is obtained corresponding wireless energy intensity data E _j+1, and perform step C7, otherwise execution step C2;

C7: relatively E _jand E _j+1if, E _j+1/ E _j>=1, perform step C8, otherwise described control unit only makes coil J work, and perform step C2;

C8: the coil of working is designated as to current coil J, and judges that whether current coil J is the segmentation energy transmitting coil of below, if so, keep described current coil working to setting-up time, process ends, otherwise, return to step C2.

The invention also discloses a kind of wireless energy transfer method, said method comprising the steps of:

D1: every preset time t, location information acquiring unit is obtained the position coordinates of energy receiving terminal;

D2: control unit judges whether described energy receiving terminal is positioned at the scope of the segmentation energy transmitting coil of below, if so, performs step D6, otherwise execution step D3;

D3: described control unit is determined the nearest segmentation energy transmitting coil of the described energy receiving terminal of distance according to described position coordinates, using segmentation energy transmitting coil nearest described described distance energy receiving terminal as current coil, and control multichannel selected cell, described current coil is communicated with described energy supply unit, to make described current coil carry out work, and perform step D4;

D4: described control unit determines according to described position coordinates whether described energy receiving terminal is positioned at the inside of current coil, if be positioned at the inside of current coil, perform step D1, if be positioned at adjacent two regions that segmentation transmitting coil edge forms, described location information acquiring unit is obtained corresponding wireless energy intensity data E ₁, and perform step D5;

D5: current coil working is switched to another coil working in described adjacent two segmentation transmitting coils by described control unit, and described location information acquiring unit is obtained corresponding wireless energy intensity data E ₂if, E ₁>=E ₂, described another coil working is switched to current coil working by described control unit, and return to step D1, otherwise return to step D1;

D6: using the segmentation energy transmitting coil of described below as current coil, and keep described current coil working to setting-up time, process ends.

The invention also discloses a kind of wireless energy transfer method, said method comprising the steps of:

E1: every preset time t, location information acquiring unit is obtained the position coordinates of energy receiving terminal;

E2: control unit judges whether described energy receiving terminal is positioned at the segmentation energy transmitting coil of the top or the scope of the segmentation energy transmitting coil of below, if so, performs step E3, otherwise execution step E4;

E3: if described energy receiving terminal is positioned at region Z ₁or Z _p, described control unit works independently corresponding coil 1 or coil P, and performs step E5, if described energy receiving terminal is positioned at region Z _{1 & 2}or Z _{p-1 & P}, described control unit is worked corresponding coil 1 and coil 2 or coil P-1 and coil P simultaneously, and performs step E5, and described segmentation energy transmitting coil has P group, and is called from top to bottom coil 1 ..., P, described region Z ₁for expanding the region forming between at least one circle and the top of described coil 1, described region Z downwards in the centre from coil 1 _pfor upwards expanding the region forming between at least one circle and the bottom of described coil P, described region Z in the centre from coil P _{1 & 2}for region Z ₁and region Z ₂between region, region Z _{p-1 & P}for region Z _p-1and region Z _pbetween region;

E4: the residing coil of described energy receiving terminal is designated as to J, if energy receiving terminal is positioned at region Z _j, described control unit is worked coil J-1, coil J and coil J+1 simultaneously, and performs step E5, if energy receiving terminal is positioned at region Z _{j-1 & J}or Z _{j & J+1}, described control unit is worked corresponding coil J-1 and coil J or coil J and coil J+1 simultaneously, and performs step E5, described region Z _jfor expanding up and down respectively the region that at least one circle forms in the centre from coil J, J=2 ..., P-1, region Z _{j-1 & J}for region Z _j-1and region Z _jbetween region, region Z _{j & J+1}for region Z _jand region Z _j+1between region;

E5: after work preset time t, judge whether to arrive setting-up time, if so, process ends, otherwise return to step e 1.

(3) beneficial effect

The present invention selects best segmentation energy transmitting coil according to the positional information of energy receiving terminal, can improve the coupling coefficient between segmentation energy transmitting coil and receiving coil, thereby improve energy transmission efficiency, both reduced the suffered electromagnetic radiation of patient, make again system to carry out energy supply by portable lithium battery, make patient freer.

Brief description of the drawings

The system architecture diagram that Fig. 1 (a) is first embodiment of the invention;

The structured flowchart of the wireless energy radiating portion that Fig. 1 (b) is first embodiment of the invention;

Fig. 1 (c) is one section of energy transmitting coil structured flowchart in first embodiment of the invention;

Fig. 1 (d) is all energy transmitting coil structured flowcharts in first embodiment of the invention;

The segmentation energy transmitting coil changing method flow chart of steps that Fig. 1 (e) is first embodiment of the invention;

The system architecture diagram that Fig. 2 (a) is second embodiment of the invention;

The segmentation energy transmitting coil changing method flow chart of steps that Fig. 2 (b) is second embodiment of the invention;

The system architecture diagram that Fig. 3 (a) is third embodiment of the invention;

The impedance matching network block diagram that Fig. 3 (b) is third embodiment of the invention;

The segmentation energy transmitting coil changing method flow chart of steps that Fig. 3 (c) is third embodiment of the invention.

The system architecture diagram that Fig. 4 (a) is four embodiment of the invention;

The coil region that Fig. 4 (b) is four embodiment of the invention is divided figure;

The segmentation energy transmitting coil changing method flow chart of steps that Fig. 4 (c) is four embodiment of the invention;

The system architecture diagram that Fig. 5 (a) is fifth embodiment of the invention;

The impedance matching network block diagram that Fig. 5 (b) is fifth embodiment of the invention;

The transmitting coil vertical section view that Fig. 5 (c) is fifth embodiment of the invention;

The segmentation energy transmitting coil changing method flow chart that Fig. 5 (d) is fifth embodiment of the invention.

Embodiment

Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used for illustrating the present invention, but are not used for limiting the scope of the invention.

The energy transmitting terminal of present embodiment comprises: multicomponent section energy transmitting coil, energy supply unit, multichannel selected cell, location information acquiring unit and control unit, described location information acquiring unit, control unit, multichannel selected cell and multicomponent section energy transmitting coil are connected successively, described energy supply unit is connected respectively with described multichannel selected cell, control unit and location information acquiring unit

Described location information acquiring unit, for obtaining the positional information of energy receiving terminal;

Described control unit, for reception and according to multichannel selected cell described in described positional information control;

Described multichannel selected cell, under the control of described control unit, selects at least one group of coil in described multicomponent section energy transmitting coil to be communicated with described energy supply unit;

Described multicomponent section energy transmitting coil, in the time being communicated with described energy supply unit, transmitting wireless energy, to ensure radio transmission efficiency.

For ease of obtaining positional information, preferably, described location information acquiring unit comprises: locator unit and/or receive data by wireless subelement,

Described locator unit, for obtaining the position coordinates of energy receiving terminal;

Described receive data by wireless subelement, for obtaining the wireless energy intensity data of energy receiving terminal.

For ease of to the energy supply of multicomponent section energy transmitting coil selectivity, preferably, described energy supply unit comprises: power supply, oscillator, power amplifier, impedance matching network and resonant capacitance, described power supply, oscillator, power amplifier, impedance matching network and resonant capacitance are connected successively, described power supply is connected respectively with described control unit, location information acquiring unit and power amplifier, and described resonant capacitance is connected with described multichannel selected cell.

For ease of producing wireless energy, preferably, the quantity of described resonant capacitance is one; Or,

The quantity of described resonant capacitance is identical and corresponding one by one with the coil quantity of described multicomponent section energy transmitting coil, so that gating is organized coil more.

Organize coil for ease of gating more, preferably, described energy supply unit comprises: power supply, oscillator, power amplifier and impedance matching network, described power supply, oscillator, power amplifier and impedance matching network are connected successively, and described power supply is connected respectively with described control unit, location information acquiring unit and power amplifier;

Between every set of segmentation energy transmitting coil and multichannel selected cell, be equipped with resonant capacitance.

Embodiment 1

As shown in Fig. 1 (a), the energy transmitting terminal of the present embodiment comprises: multicomponent section energy transmitting coil, energy supply unit, multichannel selected cell, locator unit and control unit.Wherein, multicomponent section energy transmitting coil, for the generation of wireless energy; Multichannel selected cell, for controlling the orderly access of multicomponent section transmitting coil;

Locator unit, for obtaining the position coordinates of energy receiving terminal (movably implantable medical device); Known location technology has radio position finding radio directional bearing, acoustic location, location, magnetic field etc. at present, in positioning precision 1cm, because the specific implementation of positioning function is known technology, so be not described specifically in the present invention, consider that in addition realizing of locator unit is relatively independent, for the ease of clearly demonstrating of embodiment, although locator unit relates generally to implanted part and outer body, the present invention is clear for narration, gives prominence to the key points, only a module, not separated description are regarded as in locator unit.

Control unit, for controlling the orderly collaborative work between unit, according to the position coordinates of locator unit output, produce corresponding control command, and control the normal work of energy transmitter unit, multichannel selected cell by I/O port transmission control command, the operation of guarantee system high efficiency, it can be made up of embedded processing unit, application-specific integrated circuit (ASIC) or computer etc.

Multicomponent section energy transmitting coil is to be made up of multiple identical segmentation transmitting coils, and every set of segmentation transmitting coil can be formed by the wire coiling of unlike material, different wire diameter, different cross section shape, different number of share of stocks, and the cross section of segmentation transmitting coil can be circular, can be also other shapes.

Multichannel selected cell, as switching device shifter, be arranged between segmentation energy transmitting coil and power amplifier, for selecting best segmentation energy transmitting coil work according to the control signal of control unit, wherein control signal is to produce based on the positional information of energy receiving terminal, and multichannel selected cell can be made up of MUX or the relay of logical super-high-current.

For more convenient and clearly describe operation principle, the independent explanation of wireless energy radiating portion in Fig. 1 (a), as shown in Fig. 1 (b), wireless energy radiating portion comprises: organize identical segmentation energy transmitting coil more, the resonant capacitance mating with described segmentation energy transmitting coil, multichannel selected cell, oscillator, power supply, power amplifier, for the impedance matching network of segmentation transmitting coil and power amplifier, because it is identical all to access the size of segmentation transmitting coil at every turn, the number of turn is identical, interval is identical, so impedance matching network does not need to adjust, certainly, if in the manufacturing, when each segmentation transmitting coil is slightly different, can adopt different matching networks, this is this area mature technology, the present invention is convenient for narration illustrates, only be described for the former situation, be that each segmentation transmitting coil is supposed by same size, the identical number of turn, the wire composition of same intervals, and each segmentation transmitting coil longitudinally distributes equably, also be that the segmentation energy transmitting coil that the present invention designs is by some identical numbers of turn, the helical antenna of same intervals forms (independent each helical antenna is called segmentation transmitting coil), interval between each segmentation energy transmitting coil is also identical.

When work, control unit can select one of them segmentation transmitting coil to complete wireless energy transfer according to the position of energy receiving terminal.For height and radius one timing of the wireless energy transmitting antenna that will design, the segments P of wireless energy transmitting antenna selects the coupling coefficient maximization that makes worst condition according to being, its worst condition is as shown in Fig. 1 (c), and in energy receiving terminal, receiving coil is positioned at the intersection point (A and B) of segmentation transmitting coil axis and two end face.Coupling coefficient between one of them segmentation energy transmitting coil and receiving coil calculates as shown in formula (1～4).

$k=\frac{M_{21}}{\sqrt{L_T{L}_R}}---\left(1\right)$

Wherein, M ₂₁for the mutual inductance between segmentation energy transmitting coil and receiving coil, L _t, L _rbe respectively the self-induction of segmentation energy transmitting coil and receiving coil, the parameter-definition of segmentation energy transmitting coil and receiving coil is as shown in table 1.

The parameter-definition of table 1 emitted energy transmitting coil and receiving coil

Parameter	Definition
		R&r	The radius of segmentation energy transmitting coil and receiving coil
N T&n	The number of turn of segmentation energy transmitting coil and receiving coil
		H T&h R	The height of segmentation energy transmitting coil and receiving coil
P	The hop count of segmentation energy transmitting coil
		H	The height of every section of coil in segmentation energy transmitting coil
N	The number of turn of every section of coil in segmentation energy transmitting coil
		μ 0μ r	Magnetic permeability

For M ₂₁, L _tand L _rcalculating, as shown in Equation (2):

$M_{21}=\frac{{\mathrm{\&phi;}}_{21}}{I_R},L_T=\frac{{4R}^2{N}^2}{0.9R+H},L_R=\frac{{4r}^2{n}^2}{0.9r+h}---\left(2\right)$

Wherein, φ ₂₁for the magnetic flux that transmitting coil produces in receiving coil, I _rfor the electric current in transmitting coil, for φ ₂₁calculating, have the approximate calculation process of formula (3).

$\begin{array}{c}{\mathrm{\&phi;}}_{21}=\underset{i=1}{\overset{N}{\mathrm{\&Sigma;}}}{B}_i\&CenterDot;{\mathrm{n\&pi;r}}^2=\underset{i=1}{\overset{N}{\mathrm{\&Sigma;}}}\frac{{\mathrm{\&mu;}}_0{\mathrm{\&mu;}}_r{I}_R{\mathrm{n\&pi;r}}^2}{2R}\&CenterDot;\frac{1}{{(1+{(d_i/R)}^2)}^{3/2}}\\ \&ap;\frac{{\mathrm{\&mu;}}_0{\mathrm{\&mu;}}_r{I}_R{\mathrm{n\&pi;r}}^2}{2R}\&CenterDot;\underset{0}{\overset{N}{\&Integral;}}\frac{1}{{(1+{\left(\frac{x}{N}\right)}^2\&CenterDot;{\left(\frac{H}{R}\right)}^2)}^{\frac{3}{2}}}\mathrm{dx}=\frac{{\mathrm{\&mu;}}_0{\mathrm{\&mu;}}_r{I}_R{\mathrm{n\&pi;r}}^2}{2R}\&CenterDot;\frac{N}{\sqrt{1+{\left(\frac{H}{R}\right)}^2}}\end{array}---\left(3\right)$

By in formula (2～3) substitution formula (1), can obtain:

$k\&ap;\frac{{\mathrm{\&mu;}}_0{\mathrm{\&mu;}}_r\mathrm{\&pi;r}\sqrt{0.9r+h_R}\sqrt{0.9R+H}}{8R^2\sqrt{1+{\left(\frac{H}{R}\right)}^2}}---\left(4\right)$

By formula (4), can proper H=0.445R time, coupling coefficient k can obtain maximum, in the time of practical application, is H in total height _tbest segments in situation is if gained hop count P _optfor non-integer, there are two kinds of solutions: if 1. energy transmitting coil is divided into the situation that length is identical, need best hop count P _optround, wherein computing intx gets the integer nearest apart from x; If 2. energy transmitting coil is divided into the incomplete same situation of length, needing has individual length is the segmentation transmitting coil of H=0.445R, wherein computing for getting the maximum integer less than x, and a length is H ₂=H _t-0.445RP _opt2particular section transmitting coil, as for the position of this particular length transmitting coil, can select any position also can be placed on simply topmost.

Select there is following compromise for the number of turn of each segmentation energy transmitting coil: under the undetermined prerequisite of operating frequency, interval the smaller the better (being that energy emission effciency is higher) in each segmentation wireless energy transmitting coil between circle and circle, but along with reducing of turn-to-turn distance, the number of turn of segmentation wireless energy transmitting coil can increase thereupon, cause energy transmitting coil total weight overweight, overweight to patient burden, therefore the total number of turns upper limit of transmitting coil is limited by coil total weight.

As shown in Figure 1 (d) shows, the total height of segmentation energy transmitting coil is H _t, total number of turns is N _t, in the time that energy receiving terminal is positioned at the A end of coil, coil compared with far-end B end is relatively little to the contribution of energy receiving terminal, but the magnetic field energy of segmentation energy transmitting coil is evenly distributed in whole coil, will cause so the unnecessary waste of energy, so propose a kind of method that can save energy according to above-mentioned consideration: in the course of the work, command range energy receiving terminal several circle coils far away are not worked, allow magnetic field energy concentrate on apart from the nearer several circle coils of energy receiving terminal, centralized energy supply meeting like this improves energy transmission efficiency, can be by N when concrete enforcement _tcircle transmitting coil is divided into P section, and selects corresponding one section according to the position of energy receiving terminal.For example when energy transmitting coil total height is that 30cm, diameter are that 40cm, the number of turn are 45, wire diameter is while being 2.2mm, energy transmitting coil is divided into 3 sections, every section 15 circles equably, only taking air as medium, in the situation that input power is all 1W, the magnetic field intensity of segmented wireless energy transmitting antenna (being the helical antenna of segmentation) and the not magnetic field intensity contrast (magnetic field energy is directly proportional to magnetic field intensity square) as shown in table 2 of segmentation energy transmitting antenna (unsegmented helical antenna).Known by contrasting, the scheme of segmentation is higher by 62.8% than unsegmented scheme average magnetic field energy.

Table 2 segmentation situation contrasts with the efficiency of not segmentation situation

?	Minimum-B configuration intensity (A/m)	Average magnetic field intensity (A/m)	Maximum magnetic field strength (A/m)
				Segmentation situation	14.24	19.05	33.34
Not segmentation situation	9.599	14.93	18.98

In reality test (physiological saline environment), the AC-AC efficiency of transmission that adopts segmentation energy transmitting coil to obtain is: the highest by 26.1%, average by 8.92%, minimum by 5.09% (hollow receiving coil height is that 1.5cm, diameter are that 1cm, the number of turn are 27, wire diameter be 0.5mm), the highest by 49.2%, average by 44.3%, minimum by 38.7% (being that 1.6cm, diameter are litz wire Φ 0.07mm × 27 circle that 1cm, the number of turn are 29, external diameter is 0.5mm containing the receiving coil height of Mn-Zn FERRITE CORE).When power amplifier and rectifier conversion efficiency can reach more than 90%, and when the power consumption of energy i (in vivo) receiving terminal is 50mW, the required hollow receiving coil of average transmit power <1W(of external transmitting terminal), like this, whole energy transmitting terminal just can be by lithium battery (10.8V × 5.4Ah) energy supply that is similar to Notebook Battery more than 8 hours.

The core concept of segmented wireless energy supply is exactly: along with the variation of energy receiving terminal position, the nearest segmentation energy transmitting coil of chosen distance energy receiving terminal carrys out energy supply, and the coupling coefficient between segmentation energy transmitting coil and receiving coil just can reach maximum like this.When concrete enforcement, on the clothes that segmentation energy transmitting coil can be worn around human body, or together with directly doing with clothes, as shown in Fig. 1 (a).While supposing to start, energy receiving terminal is positioned at the region that segmentation energy transmitting coil 2 surrounds, segmentation energy transmitting coil 2 is actuating coil, but along with the passing of detection time, energy receiving terminal will move to the region that segmentation energy transmitting coil 3 surrounds, such position transfer, just need to select segmentation energy transmitting coil 3 to become actuating coil, to adopt the segmentation energy transmitting coil nearest apart from energy receiving terminal to carry out wireless energy transfer as principle, improve the efficiency of wireless energy transfer.

Locator unit can position energy receiving terminal by per interval t, and position coordinates at least comprises energy receiving terminal and is positioned at which segmentation transmitting coil scope, using the foundation as switching segmentation transmitting coil.Control unit produces corresponding control signal according to position coordinates, controls multichannel selected cell segmentation transmitting coil 3 is connected with power amplifier, to reach best efficiency of transmission.

Corresponding said system and action thereof, the wireless energy transfer method of the present embodiment, as shown in Fig. 1 (e), comprises that step is as follows:

(1) the per interval t in locator unit, obtains the energy receiving terminal position coordinates with respect to segmentation energy transmitting coil, judge the scope of the segmentation energy transmitting coil of energy receiving terminal below whether being positioned at: if so, go to step (3); If not, go to step (2).

(2) control unit is according to position coordinates, determine the segmentation transmitting coil nearest apart from energy receiving terminal, and the control information that is produced control multichannel selected cell by control unit, multichannel selected cell completes the selection of the segmentation energy transmitting coil nearest apart from energy receiving terminal, to make the nearest segmentation energy transmitting coil of the described energy receiving terminal of described distance carry out work, and execution step (1).

(3) using the segmentation energy transmitting coil of described below as current coil, and keep described current coil working to setting-up time, process ends.

Embodiment 2

As shown in Figure 2 (a) shows, the difference in the present embodiment and embodiment 1 is: energy transmitting terminal does not have locator unit, but has increased receive data by wireless subelement, and needs energy receiving terminal inside to comprise energy harvesting unit and wireless data transmission unit.Wireless data transmission unit in external receive data by wireless subelement and body can share with the wireless transceiver system that originally contains in embedded system (such as wireless capsule system) movably, transmits together with the Data Integration that only the wireless energy intensity data of transmission will need be transmitted with energy receiving terminal.

Suppose that initial energy receiving terminal is positioned at the region that segmentation energy transmitting coil 2 surrounds, segmentation transmitting coil 2 is actuating coil, but along with the passing of detection time, energy receiving terminal will move to the region that segmentation transmitting coil 3 or coil 1 surround, and (enteron aisle may fluctuate, owing to not locating, situation all must be considered), this just needs to switch in real time corresponding segmentation energy transmitting coil.In the situation that there is no energy receiving terminal position coordinates, t at set intervals, to switch fast with the neighbouring segmentation transmitting coil of work at present coil, then select to make to receive the segmentation transmitting coil that energy is relatively large, this segmentation transmitting coil is the segmentation transmitting coil nearest apart from energy receiving terminal.Control unit produces corresponding control signal, controls multichannel selected cell nearest transmitting coil is connected with power amplifier, has best efficiency of transmission to reach system.

Corresponding said system and switching mode one, the wireless energy transfer method of the present embodiment, as shown in Fig. 2 (b), comprises that step is as follows:

(1) control unit choose at random except the segmentation energy transmitting coil of the top and the arbitrary segmentation energy transmitting coil the segmentation energy transmitting coil of below as current coil J.

(2) after current coil J operating time t, judge whether current coil J is the top segmentation energy transmitting coil, if, be directly switch into coil J+1, and go to step (3), otherwise switch to coil J-1, make a choice according to energy back: if energy increases, selecting coil J-1 is actuating coil, and goes to step (4); If energy reduces, switch to coil J+1, and go to step (3).

(3) make a choice according to energy back: if energy increases, selecting coil J+1 is actuating coil, and goes to step (4); If energy reduces, coil J continues as actuating coil, and goes to step (2).

(4) coil of working is designated as to current coil J, judges that whether current coil J is the segmentation energy transmitting coil of below: if keep current coil working to setting-up time, then process ends; If not, go to step (2).

Embodiment 3

As shown in Fig. 3 (a), difference in this embodiment and embodiment 2 is: each segmentation energy transmitting coil is furnished with an electric capacity for resonance with it, so just can access two segmentation energy transmitting coils by multichannel selected cell, and electric current in two segmentation transmitting coils need to keep identical phase place simultaneously.The variation of switch-on coil changes its impedance, so its impedance matching network just need to adjust accordingly, as shown in Figure 3 (b), has two kinds of matching networks.In the time of access single split transmitting coil, control unit is connected to " matching network when work of single split transmitting coil " between power amplifier and multichannel selected cell; In the time of two segmentation transmitting coils of access, control unit is connected to " matching network when two segmentation transmitting coil work " between power amplifier and multichannel selected cell.And control unit control multichannel selected cell is connected with segmentation energy transmitting coil, make the energy of power amplifier to be transferred to each segmentation transmitting coil by corresponding matching network.Suppose that initial energy receiving terminal is positioned at the region that segmentation energy transmitting coil 2 surrounds, segmentation energy transmitting coil 2 is actuating coil, but along with the passing of detection time, energy receiving terminal will move to the region that segmentation energy transmitting coil 3 or coil 1 surround, and (enteron aisle may fluctuate, owing to not locating, situation all must be considered), this just need to switch to corresponding segmentation energy transmitting coil.In the situation that there is no position coordinates, t at set intervals, attempt respectively two the segmentation energy transmitting coils (coil 1, coil 3) adjacent with work at present coil 2, allow respectively coil 1, coil 3 work with work at present coil 2 simultaneously, and judging that according to receiving energy which coil contribution is maximum, this coil is the segmentation energy transmitting coil nearest apart from energy receiving terminal.Control unit produces corresponding control signal, controls multichannel selected cell best segmentation transmitting coil is connected with power amplifier.In addition, for the segmentation energy transmitting coil in embodiment 2, both can adopt 2(a) in structure, also can adopt 3(a) in structure.The mode that accesses two segmentation energy transmitting coils in this sight time avoided as in embodiment 2 in the time that single energy transmitting coil switches system have the drawback of instant power-down.

Corresponding said system and switching mode, the wireless energy transfer method of the present embodiment as shown in Figure 3 (c), comprises that step is as follows:

(1) control unit choose at random except the segmentation energy transmitting coil of the top and the arbitrary segmentation energy transmitting coil the segmentation energy transmitting coil of below as current coil J

(2) work at work at present coil J operating time t relief coil J and coil J-1 simultaneously, and go to step (3).

(3) make a choice according to energy back: if E _{j, j-1}/ E _j>=1(E _jthe wireless energy intensity data that receive during for J coil working, E _{j, j-1}the wireless energy intensity data that receive while simultaneously work for coil J and coil J-1), allow the coil J-1 be actuating coil, and go to step (4); If E _{j, j-1}/ E _j< 1, goes to step (5).

(4) make a choice according to energy back: if E _j-1/ E _j>=1(E _j-1the wireless energy intensity data that receive while work for coil J-1), allow the coil J-1 be actuating coil, and go to step (8); If E _j-1/ E _j< 1, continues to allow the coil J be actuating coil, and goes to step (8).

(5) allow coil J and coil J+1 work simultaneously, and obtain E _{j, j+1}(E _{j, j-1}the wireless energy intensity data that receive while simultaneously work for coil J and coil J+1).

(6) make a choice according to energy back: if E _{j, j+1}/ E _j>=1, selecting coil J+1 is actuating coil, and goes to step (7); If E _{j, j+1}/ E _j< 1, coil J continues as actuating coil, and goes to step (2).

(7) make a choice according to energy back: if E _j+1/ E _j>=1(E _j+1the wireless energy intensity data that receive while work for coil J+1), allow the coil J+1 be actuating coil, and go to step (8); If E _j+1/ E _j< 1, continues to allow the coil J be actuating coil, and goes to step (2).

(8) work at present coil is designated as J, if current coil is the segmentation transmitting coil of below, keeps current coil working to setting-up time; If current coil is not lowermost segment transmitting coil, go to step (2).

Embodiment 4

As shown in Figure 4 (a), the difference in this structure and above embodiment 1,2,3 is: system had both comprised locator unit, comprised again receive data by wireless subelement, and the changing method of segmentation energy transmitting coil also changes thereupon.In the time of application, first adopt position coordinates, may cause judgement unpunctual but work as position error, for example, in the time that energy receiving terminal moves to two positions between coil, at this moment just need to judge that according to the energy information feeding back to from energy receiving terminal whether energy is enough, such twice judgement makes system more reliable.

Locator unit can position energy receiving terminal by per interval t, position coordinates comprises energy receiving terminal and is positioned at which coil scope and which kind of position (segmentation energy transmitting coil inside or edge), due to current position error <1cm, so setting the height at edge is 1cm, the region at upper and lower two edges is removed for inner in the space that segmentation transmitting coil surrounds, as shown in Figure 4 (b), in the vertical section view of segmentation energy transmitting coil, carried out region division as an example of segmentation transmitting coil 1 example.Suppose that energy receiving terminal is positioned at the region that segmentation transmitting coil 2 surrounds, segmentation energy transmitting coil 2 is actuating coil, but along with the passing of detection time, energy receiving terminal will move to the region that segmentation energy transmitting coil 3 surrounds, such position transfer, just need to select segmentation energy transmitting coil 3 to become actuating coil, control unit produces corresponding control signal according to positional information, control multichannel selected cell segmentation energy transmitting coil 3 is connected with power amplifier, have best efficiency of transmission to reach system.But in the time of the position of energy receiving terminal between segmentation energy transmitting coil 2 and 3 (two regions that the adjacent edge of coil forms), may there is error in location, at this moment just need to test according to the energy information being fed back to by energy receiving terminal, if complete after switching according to locating information, energy information shows that the energy receiving increases, and illustrates this switching effectively; If showing energy, reduces energy information, illustrating this locating information has error (prerequisite is that energy receiving terminal can not shift at short notice on a large scale, so energy receiving terminal must be positioned at the coil that maybe will switch before switching), need to continue to use the segmentation energy transmitting coil before switching.

Corresponding said system and action thereof, the wireless energy transfer method of the present embodiment as shown in Figure 4 (c), comprises that step is as follows:

(1) the per interval t in locator unit, obtains the energy receiving terminal position coordinates with respect to segmentation energy transmitting coil, judge energy receiving terminal whether be positioned at below coil scope: if go to step (4); If not, go to step (2).

(2) control unit completes the switching of segmentation energy transmitting coil according to position coordinates control multichannel selected cell, and execution step (3).

(3) if the inside that locating information is sectional coil, execution step (1); If positional information is the edge of segmentation energy transmitting coil, contrast segmentation energy transmitting coil and switch the wireless energy intensity data that front and back receive: if energy reduces after switching, continue to use the segmentation energy transmitting coil before switching, and execution step (1); If energy increases after switching, execution step (1).

(4) below maintenance, coil moves to setting-up time, then process ends.

Embodiment 5

As shown in Fig. 5 (a), difference in this embodiment and embodiment 4 is: every group of radio segment energy transmitting coil is all furnished with an electric capacity for resonance with it, like this in MUX in the time attempting switching, just can connect one, two, or multiple segmentation energy transmitting coil.Core concept is no matter which position energy receiving terminal is positioned at, all allow its middle part in multiple segmentation energy transmitting coils as far as possible, or allow the middle part of its whole coil forming in multiple segmentation energy transmitting coils, between segmentation energy transmitting coil and receiving coil, the coupling coefficient of worst condition just can reach maximum owing to can not allowing segmentation energy transmitting coil along with the change in location of energy receiving terminal moves like this, so select along with the change in location of energy receiving terminal is controlled accordingly to multicomponent section transmitting coil.Introduce two kinds of coil switching modes based on above-mentioned thought: the first, in the time that energy receiving terminal is positioned at the middle part of a transmitting coil, just select the work of corresponding one pack system section energy transmitting coil, in the time that energy receiving terminal is positioned at two coil middle parts, just select corresponding two coil workings; The second, in the time that energy receiving terminal is positioned at the top or nethermost segmentation energy transmitting coil middle part, only select corresponding one pack system section energy transmitting coil work, in the time that energy receiving terminal is positioned at the middle part of other single group coils, just select current coil and the two set of segmentation energy transmitting coils neighbouring with it to work simultaneously, in the time that energy receiving terminal is positioned at two coil middle parts, just select the work of corresponding two segmentation energy transmitting coils.The main distinction of two kinds of modes is exactly, in the time that energy receiving terminal is positioned at the middle part of one pack system section energy transmitting coil, to select the work of one pack system section energy transmitting coil still to select three transmitting coil work.The variation of switch-on coil changes its impedance, so its impedance matching network just need to adjust accordingly, as shown in Fig. 5 (b), has three kinds of matching networks.In the time of access single split transmitting coil, control unit is connected to " matching network when work of one pack system section energy transmitting coil " between power amplifier and multichannel selected cell; In the time of two segmentation transmitting coils of access, control unit is connected to " matching network when two set of segmentation energy transmitting coil work " between power amplifier and multichannel selected cell; In the time of three segmentation energy transmitting coils of access, control unit is connected to " matching network when three set of segmentation energy transmitting coil work " between power amplifier and multichannel selected cell, and control unit control multichannel selected cell is connected with segmentation energy transmitting coil, make the energy of power amplifier can be transferred to by corresponding matching network the electric current maintenance same phase of each segmentation energy transmitting coil and each segmentation energy transmitting coil.In the time switching segmentation energy transmitting coil, can be only according to position coordinates, also can be only according to wireless energy intensity data, also can both combinations.

The vertical section of segmentation energy transmitting coil is as shown in Fig. 5 (c), and topmost segmentation energy transmitting coil sequence number is 1, and below segmentation energy transmitting coil sequence number is P, and in the vertical direction is different regions by spatial division.Suppose that initial energy receiving terminal is positioned at the central region Z of segmentation energy transmitting coil 1 ₁(for ensureing that system has sufficient nargin, P set of segmentation energy transmitting coil coverage specific energy receiving terminal range of movement is slightly large, be the edge that energy receiving terminal can not move to coil 1, coil P), segmentation transmitting coil 1 is actuating coil, but along with the passing of detection time, energy receiving terminal will move to the region Z in the middle of segmentation transmitting coil 1 and coil 2 _{1 & 2}(region of the upper 1/4 part composition of lower 1/4 part that the zone line of adjacent two coils is upper planar coil and lower planar coil), at this moment just need segmentation transmitting coil 1, coil 2 to work simultaneously, the advantage of this kind of switching mode can obtain from table 3, (for example Z in the time that energy receiving terminal is positioned at 1/4 region, bottom of single split transmitting coil _{1 & 2}), the minimum value of the magnetic field intensity that its single coil produces and mean value is all than low by the magnetic field intensity of two segmentation transmitting coils generations, and works simultaneously and can allow Z with two segmentation transmitting coils _{1 & 2}region internal magnetic field intensity consistency is better, when energy receiving terminal moves to the central region Z of coil 2 ₂time (central region of a coil is the zone line that accounts for this coil gross space 1/2), need coil 2 to work independently or need segmentation transmitting coil 1, coil 2, coil 3 is worked simultaneously, can obtain conclusion from table 4, visible three coils are worked simultaneously and can be made minimum-B configuration intensity slightly promote, but average magnetic field intensity is not as the situation of single split transmitting coil work, two kinds of application modes respectively have superiority, so can select the work of single split transmitting coil in this kind of situation, also can select three segmentation transmitting coils to work simultaneously, while considering practical application, system may be carried out wireless energy transmitting with the power that meets minimum efficiency of transmission, so in this embodiment in the time that energy receiving terminal is positioned at segmentation transmitting coil middle part, selection allows three schemes that segmentation transmitting coil is worked simultaneously, when coil movement is to the middle region Z of coil 2 and coil 3 _{2 & 3}time, just need segmentation transmitting coil 2, coil 3 to work simultaneously, other situations are analogized according to foregoing.

Table 3 single split coil and two sectional coils are at region Z _{1 & 2}magnetic field energy contrast

?	Minimum-B configuration intensity	Average magnetic field intensity	Maximum magnetic field strength
				The work of single split transmitting coil	14.24(A/m)	18.42(A/m)	32.40(A/m)
Two segmentation transmitting coils are worked simultaneously	15.59(A/m)	18.57(A/m)	23.68(A/m)

Table 4 single split coil and three sectional coils contrast in the magnetic field energy of region Z2

?	Minimum-B configuration intensity	Average magnetic field intensity	Maximum magnetic field strength
				The work of single split transmitting coil	14.24(A/m)	19.35(A/m)	33.1(A/m)
Three segmentation transmitting coils are worked simultaneously	14.91(A/m)	16.38(A/m)	18.93(A/m)

In the time only applying locator unit, locator unit can position energy receiving terminal by per interval t, and position coordinates is which kind of region that energy receiving terminal is positioned at that coil, using the foundation as switching coil.Control unit produces corresponding control signal according to positional information, controls multichannel selected cell corresponding segment transmitting coil is connected with power amplifier, has best efficiency of transmission to reach system.In the time of employing wireless data transmit-receive unit, t at set intervals, access and the upper and lower adjacent segmentation transmitting coil of work at present coil will be attempted respectively, allow one of them and work at present coil work simultaneously, if the energy information feeding back to shows the energy receiving increase, switch correctly, even do not have feedback if the energy information feeding back to shows the energy reduction receiving, handoff error, need to allow work at present coil continue to work independently.When both applying locator unit, while having again receive data by wireless subelement, first adopt position coordinates, when position error may cause judgement unpunctual, for example, in the time that energy receiving terminal moves to the line of demarcation in two regions, at this moment just need to judge according to energy information before and after the switching feeding back to from energy receiving terminal whether switching is effective, and such twice judgement makes system more reliable.The present embodiment is to be only elaborated as example with locator unit.

The wireless energy transfer method of the present embodiment, as shown in Fig. 5 (d), comprises that step is as follows:

(1) initial decision, whether energy receiving terminal is positioned at coil 1 (coil of the top) or the P coil of below () scope: if, execution step (2); If not, perform step (3).

(2) energy receiving terminal is positioned: if energy receiving terminal is positioned at region Z ₁or Z _p, allow corresponding coil work independently, and turn to step (4); If energy receiving terminal is positioned at region Z _{1 & 2}or Z _{p-1 & P}(between coil P-1 and coil P), allows coil 1 & 2 or coil P-1 & P work simultaneously, and turns to step (4).

(3) energy receiving terminal coil of living in is designated as J, and energy receiving terminal is positioned: if energy receiving terminal is positioned at the central region Z of coil J _j(central region of J coil is the zone line that accounts for this coil gross space 1/2) allows coil J-1, J, J+1 work simultaneously, and turns to step (4); If the region Z of energy receiving terminal between coil J and J-1 or J+1 _{j-1 & J}(region of the upper 1/4 part composition of lower 1/4 part of J-1 coil and J coil), Z _{j & J+1}(region of the upper 1/4 part composition of lower 1/4 part of J coil and J+1 coil), allows coil J and J-1 or J+1 work simultaneously, and turns to step (4).

(4), after operating time t, judge whether arrive setting-up time running time: if, process ends; If not, perform step (1).

In certain embodiments, can utilize the position coordinates of energy receiving terminal and the foundation that wireless energy intensity data regulate as energy work rate simultaneously, the direction (increase or reduce) that the position coordinates of energy receiving terminal can provide energy work rate to regulate, wireless energy intensity data can provide feedback, make power adjustments meticulousr and accurate, system is more stable.And the interval of adjacent twice power adjustments can be adjusted according to different situations.

Above execution mode is only for illustrating the present invention; and be not limitation of the present invention; the those of ordinary skill in relevant technologies field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all technical schemes that are equal to also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.

Claims (10)

1. an energy transmitting terminal, it is characterized in that, described energy transmitting terminal comprises: multicomponent section energy transmitting coil, energy supply unit, multichannel selected cell, location information acquiring unit and control unit, described location information acquiring unit, control unit, multichannel selected cell and multicomponent section energy transmitting coil are connected successively, described energy supply unit is connected respectively with described multichannel selected cell, control unit and location information acquiring unit

Described location information acquiring unit, for obtaining the positional information of energy receiving terminal;

Described control unit, for reception and according to multichannel selected cell described in described positional information control;

Described multichannel selected cell, under the control of described control unit, selects at least one group of coil in described multicomponent section energy transmitting coil to be communicated with described energy supply unit;

Described multicomponent section energy transmitting coil, in the time being communicated with described energy supply unit, transmitting wireless energy, to ensure radio transmission efficiency.

2. energy transmitting terminal as claimed in claim 1, is characterized in that, described location information acquiring unit comprises: locator unit and/or receive data by wireless subelement,

Described locator unit, for obtaining the position coordinates of energy receiving terminal;

Described receive data by wireless subelement, for obtaining the wireless energy intensity data of energy receiving terminal.

3. energy transmitting terminal as claimed in claim 1 or 2, it is characterized in that, described energy supply unit comprises: power supply, oscillator, power amplifier, impedance matching network and resonant capacitance, described power supply, oscillator, power amplifier, impedance matching network connect successively, described power supply is connected respectively with described control unit, location information acquiring unit and power amplifier, and described resonant capacitance is located between described impedance matching network and described multichannel selected cell or is located between every set of segmentation energy transmitting coil and multichannel selected cell.

4. energy transmitting terminal as claimed in claim 3, is characterized in that, in the time that described resonant capacitance is located between described impedance matching network and described multichannel selected cell, the quantity of described resonant capacitance is one; Or the quantity of described resonant capacitance is identical and corresponding one by one with the coil quantity of described multicomponent section energy transmitting coil.

5. energy transmitting terminal system as claimed in claim 1 or 2, is characterized in that, works as P _optduring for integer, the height H of every set of segmentation energy transmitting coil is all identical;

Work as P _optwhile being not integer, total height is H _tenergy transmitting coil be divided into P _opt1group is highly segmentation energy transmitting coil; Or described total height is H _tenergy transmitting coil be divided into P _opt2group is highly for segmentation energy transmitting coil and the one group of height of H are H ₂segmentation energy transmitting coil;

Wherein, h _tfor the total height of energy transmitting coil, H=0.445R, P _opt1=int<P _opt>, int<x> gets the integer arithmetic symbol nearest apart from x, H ₂=H _t-HP _opt2, R is energy transmitting coil radius, for downward rounding operation symbol.

6. a wireless energy transfer method, is characterized in that, said method comprising the steps of:

A1: every preset time t, location information acquiring unit is obtained the position coordinates of energy receiving terminal;

A2: control unit judges whether described energy receiving terminal is positioned at the scope of the segmentation energy transmitting coil of below, if so, performs step A4, otherwise execution step A3;

A3: described control unit is determined the nearest segmentation energy transmitting coil of the described energy receiving terminal of distance according to described position coordinates, and control multichannel selected cell, the nearest segmentation energy transmitting coil of the described energy receiving terminal of described distance is communicated with described energy supply unit, to make the nearest segmentation energy transmitting coil of the described energy receiving terminal of described distance carry out work, and return to steps A 1;

A4: using the segmentation energy transmitting coil of described below as current coil, and keep described current coil working to setting-up time, process ends.

7. a wireless energy transfer method, is characterized in that, said method comprising the steps of:

B1: control unit choose at random except the segmentation energy transmitting coil of the top and the arbitrary segmentation energy transmitting coil the segmentation energy transmitting coil of below as current coil J, and current coil J is communicated with energy supply unit, location information acquiring unit is obtained the wireless energy intensity data E that current coil J is corresponding _j;

B2: after current coil J work preset time t, judge whether current coil J is the top segmentation energy transmitting coil, if, perform step B3, otherwise current coil J work is switched to coil J-1 work by described control unit, and described location information acquiring unit is obtained the wireless energy intensity data E that current coil J-1 is corresponding _j-1, relatively E _jand E _j-1if, E _j-1>E _j, perform step B4, otherwise execution step B3, described coil J-1 is adjacent with described current coil J and is positioned at the segmentation energy transmitting coil of described current coil J top;

B3: described control unit switches to coil J+1 work, and described location information acquiring unit is obtained the wireless energy intensity data E that current coil J+1 is corresponding _j+1, relatively E _jand E _j+1if, E _j+1>E _j, perform step B4, otherwise coil J+1 work is switched to coil J work by described control unit, and return to step B2, described coil J+1 is adjacent with described current coil J and is positioned at the segmentation energy transmitting coil of described current coil J below;

B4: the coil of working is designated as to current coil J, and judges that whether current coil J is the segmentation energy transmitting coil of below, if so, keep described current coil working to setting-up time, process ends, otherwise, return to step B2.

8. a wireless energy transfer method, is characterized in that, said method comprising the steps of:

C1: control unit choose at random except the segmentation energy transmitting coil of the top and the arbitrary segmentation energy transmitting coil the segmentation energy transmitting coil of below as current coil J, and current coil J is communicated with energy supply unit, location information acquiring unit is obtained the wireless energy intensity data E that current coil J is corresponding _j;

C2: after current coil J work preset time t, described control unit is worked current coil J and coil J-1 simultaneously, and described location information acquiring unit is obtained corresponding wireless energy intensity data E _{j, j-1}, described coil J-1 is adjacent with described current coil J and is positioned at the segmentation energy transmitting coil of described current coil J top;

C3: relatively E _jand E _{j, j-1}if, E _{j, j-1}/ E _j>=1, described control unit only makes coil J-1 work, and described location information acquiring unit is obtained corresponding wireless energy intensity data E _j-1, and perform step C4, otherwise execution step C5;

C4: relatively E _jand E _j-1if, E _j-1/ E _j>=1, perform step C8, otherwise described control unit only makes coil J work, and perform step C8;

C5: described control unit is worked current coil J and coil J+1 simultaneously, described location information acquiring unit is obtained corresponding wireless energy intensity data E _{j, j+1}, described coil J+1 is adjacent with described current coil J and is positioned at the segmentation energy transmitting coil of described current coil J below;

C6: relatively E _jand E _{j, j+1}if, E _{j, j+1}/ E _j>=1, described control unit only makes coil J+1 work, and described location information acquiring unit is obtained corresponding wireless energy intensity data E _j+1, and perform step C7, otherwise execution step C2;

C7: relatively E _jand E _j+1if, E _j+1/ E _j>=1, perform step C8, otherwise described control unit only makes coil J work, and perform step C2;

C8: the coil of working is designated as to current coil J, and judges that whether current coil J is the segmentation energy transmitting coil of below, if so, keep described current coil working to setting-up time, process ends, otherwise, return to step C2.

9. a wireless energy transfer method, is characterized in that, said method comprising the steps of:

D1: every preset time t, location information acquiring unit is obtained the position coordinates of energy receiving terminal;

D2: control unit judges whether described energy receiving terminal is positioned at the scope of the segmentation energy transmitting coil of below, if so, performs step D6, otherwise execution step D3;

D3: described control unit is determined the nearest segmentation energy transmitting coil of the described energy receiving terminal of distance according to described position coordinates, using segmentation energy transmitting coil nearest described described distance energy receiving terminal as current coil, and control multichannel selected cell, described current coil is communicated with described energy supply unit, to make described current coil carry out work, and perform step D4;

D4: described control unit determines according to described position coordinates whether described energy receiving terminal is positioned at the inside of current coil, if be positioned at the inside of current coil, perform step D1, if be positioned at adjacent two regions that segmentation transmitting coil edge forms, described location information acquiring unit is obtained corresponding wireless energy intensity data E ₁, and perform step D5;

D5: current coil working is switched to another coil working in described adjacent two segmentation transmitting coils by described control unit, and described location information acquiring unit is obtained corresponding wireless energy intensity data E ₂if, E ₁>=E ₂, described another coil working is switched to current coil working by described control unit, and return to step D1, otherwise return to step D1;

D6: using the segmentation energy transmitting coil of described below as current coil, and keep described current coil working to setting-up time, process ends.

10. a wireless energy transfer method, is characterized in that, said method comprising the steps of:

E1: every preset time t, location information acquiring unit is obtained the position coordinates of energy receiving terminal;

E2: control unit judges whether described energy receiving terminal is positioned at the segmentation energy transmitting coil of the top or the scope of the segmentation energy transmitting coil of below, if so, performs step E3, otherwise execution step E4;

E3: if described energy receiving terminal is positioned at region Z ₁or Z _p, described control unit works independently corresponding coil 1 or coil P, and performs step E5, if described energy receiving terminal is positioned at region Z _{1 & 2}or Z _{p-1 & P}, described control unit is worked corresponding coil 1 and coil 2 or coil P-1 and coil P simultaneously, and performs step E5, and described segmentation energy transmitting coil has P group, and is called from top to bottom coil 1 ..., P, described region Z ₁for expanding the region forming between at least one circle and the top of described coil 1, described region Z downwards in the centre from coil 1 _pfor upwards expanding the region forming between at least one circle and the bottom of described coil P, described region Z in the centre from coil P _{1 & 2}for region Z ₁and region Z ₂between region, region Z _{p-1 & P}for region Z _p-1and region Z _pbetween region;

E4: the residing coil of described energy receiving terminal is designated as to J, if energy receiving terminal is positioned at region Z _j, described control unit is worked coil J-1, coil J and coil J+1 simultaneously, and performs step E5, if energy receiving terminal is positioned at region Z _{j-1 & J}or Z _{j & J+1}, described control unit is worked corresponding coil J-1 and coil J or coil J and coil J+1 simultaneously, and performs step E5, described region Z _jfor expanding up and down respectively the region that at least one circle forms in the centre from coil J, J=2 ..., P-1, region Z _{j-1 & J}for region Z _j-1and region Z _jbetween region, region Z _{j & J+1}for region Z _jand region Z _j+1between region;

E5: after work preset time t, judge whether to arrive setting-up time, if so, process ends, otherwise return to step e 1.