CN107302249A - A kind of vivo implantation type Medical Devices wireless charging method - Google Patents
A kind of vivo implantation type Medical Devices wireless charging method Download PDFInfo
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- CN107302249A CN107302249A CN201710663145.3A CN201710663145A CN107302249A CN 107302249 A CN107302249 A CN 107302249A CN 201710663145 A CN201710663145 A CN 201710663145A CN 107302249 A CN107302249 A CN 107302249A
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000002513 implantation Methods 0.000 title claims abstract description 29
- 230000033228 biological regulation Effects 0.000 claims abstract description 14
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 229910000859 α-Fe Inorganic materials 0.000 claims description 3
- 238000004891 communication Methods 0.000 description 13
- 238000005259 measurement Methods 0.000 description 12
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 11
- 230000008878 coupling Effects 0.000 description 9
- 238000010168 coupling process Methods 0.000 description 9
- 238000005859 coupling reaction Methods 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000007667 floating Methods 0.000 description 3
- 229940127554 medical product Drugs 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 206010010254 Concussion Diseases 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 230000009514 concussion Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 208000010086 Hypertelorism Diseases 0.000 description 1
- 206010020771 Hypertelorism of orbit Diseases 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Classifications
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- H02J7/025—
-
- 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
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
-
- 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
- H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
Abstract
The present invention relates to a kind of vivo implantation type Medical Devices wireless charging method, following steps are included：Send one group of opposite polarity, the square-wave signal of fixed skew, the frequency of square-wave signal is (70% 99%) f0 or (101% 130%) f0；After by signal amplifying apparatus (14), square-wave signal is amplified, by charge coil formation electromagnetic wave, and by charge coil close to receiving coil (21)；Measure the current value or performance number of charging end, regulation charge coil position, charge coil position when finding current value or maximum or minimum performance number；Keep charge coil position constant, change square-wave signal frequency to charge frequency and charged.This vivo implantation type Medical Devices wireless charging method, can quickly realize that the alignment of charging end charge coil and receiving coil is positioned, greatly improve charge efficiency.
Description
Technical field
The present invention relates to a kind of vivo implantation type Medical Devices wireless charging method, belong to technical field of medical instruments.
Background technology
Implantable medical devices wide variety, have wide range of applications, existing implantable medical product is more in the market
It is powered using the lithium primary cell of high-energy-density, the life-span is mostly shorter.In recent years, with the development of medical technology, implantation
It is more complicated that the function of formula medical product becomes, and power consumption is also increased as, and the life-span of conventional lithium primary cell can not expire
The present application demand of foot, therefore, exploitation life-span longer chargeable implantable medical devices product have become following hair
The main trend of exhibition.
Because implantable medical product needs to be chronically implanted in patient's body, it is necessary to using the preferable Titanium of biocompatibility
Shell is sealed, and has the tissue such as skin to isolate between external charging device, it is therefore desirable to wirelessly to et al. Ke
Formula Medical Devices carry out energy transmission.
The near radio charging technique of current main flow typically uses electromagnetic induction principle, and this charging method needs to send
There is good magnetic coupling between receiving coil could effectively improve charge efficiency.But when Medical Devices implant
Afterwards, patient is difficult that the Medical Devices implanted are accurately positioned, and is existed because inside and outside device is inaccurate or long-time
The problem of contraposition causes the heating increase of vivo implantation type medicine equipment.
It is existing at present to have than more conventional contraposition scheme for alignment issues：
In charging gap, the information exchange of internal external equipment is periodically carried out, by the energy for analyzing internal external equipment
Efficiency of transmission judges whether contraposition accurate, and this scheme can find optimal charge position, but contraposition governing speed by
In vivo, there is the slow-footed problem of governing response in outer device radio-communication period limitation.
The content of the invention
The technical problem to be solved in the present invention is：The technology of corresponding slow-footed problem during positioning to solve prior art
Problem, so as to provide a kind of vivo implantation type Medical Devices wireless charging method of fast response time during positioning.
The present invention is for the technical scheme that is used of its technical problem of solution：
The present invention provides a kind of vivo implantation type Medical Devices wireless charging system, including charging end and receiving terminal；
Charging end, including, control device, signal generation device, frequency shift (FS) device, signal amplifying apparatus, status monitoring
Device, antenna module and feedback device and/or communication device；
Signal generation device, for send one group of opposite polarity, fixed skew square-wave signal；
Frequency shift (FS) device, for carrying out frequency shift (FS) to the square-wave signal for sending signal generation device, after skew
Frequency is f0 or (101%-130%) f0, whereinL is the inductance of charge coil, and unit is H, C
For the capacitance of matching capacitance, unit is F, and fo is resonant frequency value, and unit is Hz；
Signal amplifying apparatus, for the square-wave signal after skew to be amplified；
Antenna module, including charge coil, matching capacitance and iron core, for receiving that signal generation device is produced or putting
Square-wave signal after big, and send electromagnetic wave, charge coil and matching capacitance formation LC concussions；
Condition checkout gear, transmission electric current or power for detecting signal amplifying apparatus；
Control device, the performance number for the signal amplifying apparatus that reception state detection means is detected or according to receiving hair
Power transmission flow valuve calculates performance number, and according to the performance number with obtaining charge coil with receiving line apart from-performance number curve conversion
The distance between circle；
Feedback device, for reacting the distance between charge coil and receiving coil value to user；
Communication device, for the distance between charge coil and receiving coil value to be sent into smart machine, passes through intelligence
Energy equipment reacts the distance between charge coil and receiving coil value to user；
In receiving terminal, implantation human body, including receiving coil and the rechargeable battery that is connected with receiving coil, receiving coil can
Receive the electromagnetic wave of antenna module and produce electric current and charged for rechargeable battery.
Preferably, vivo implantation type Medical Devices wireless charging system of the invention, frequency shift (FS) device, to signal is produced
The square-wave signal that generating apparatus is sent carries out frequency shift (FS), and the frequency after skew is f0.
Preferably, vivo implantation type Medical Devices wireless charging system of the invention, condition checkout gear is electric power detection
Chip, the current value for detecting signal amplifying apparatus.
Preferably, vivo implantation type Medical Devices wireless charging system of the invention, the feedback device is display screen, is shown
Display screen display control unit 11 converts obtained distance or the size for representing graphically out distance.
Preferably, vivo implantation type Medical Devices wireless charging system of the invention, the iron core includes middle centre
Protuberance and the flange protrusions positioned at edge, are receiving charge coil holding tank between intermediate ledge and flange protrusions.
Preferably, vivo implantation type Medical Devices wireless charging system of the invention, the iron core is ferrite iron core.
Preferably, vivo implantation type Medical Devices wireless charging system of the invention, the intermediate ledge and edge are convex
Go out portion concordant in a thickness direction.
Preferably, vivo implantation type Medical Devices wireless charging system of the invention, the square-wave signal is by least two pairs
Opposite polarity single harmonic is constituted, and has fixed skew between each pair single harmonic.
The beneficial effects of the invention are as follows：
1. the vivo implantation type Medical Devices wireless charging system of the present invention, by launching different from reference frequency value f0's
Square-wave signal, can measure distance-performance number curve that slope is not 0, so that can be by the power of signal amplifying apparatus
Value conversion obtains distance and is achieved so as to carry out positioning.Moreover, only needing to measure the power of charging end in position fixing process, it is not required to
To be communicated with et al. Ke equipment, therefore fast response time.
Little power consumption in position fixing process when 2. frequency floats, can be with power saving.Therefore, optimal selection is upper inclined 5%-10%
((105%-110%) f0).Within this range not only can the using electricity wisely in position fixing process, moreover it is possible to obtain more fixed
Position result.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is vivo implantation type Medical Devices wireless charging system；
Fig. 2 is charge coil and a kind of set-up mode of matching capacitance；
Fig. 3 is charge coil and another set-up mode of matching capacitance；
Fig. 4 is a kind of set-up mode of signal amplifying apparatus；
Fig. 5 is another set-up mode of signal amplifying apparatus；
Fig. 6 a are the embodiments of the first concrete structure of battery core；
Fig. 6 b are sectional views of Fig. 6 a along A-A directions；
Fig. 7 a are the embodiments of second of concrete structure of battery core；
Fig. 7 b are sectional views of Fig. 7 a along A-A directions；
Fig. 8 a are the embodiments of the third concrete structure of battery core；
Fig. 8 b are sectional views of Fig. 8 a along A-A directions；
Fig. 9 is the oscillogram of square-wave signal.
Reference is：
11- control devices；12- signal generation devices；13- frequency shift (FS) devices；14- signal amplifying apparatus；15- antennas
Component；16- state monitoring apparatus；17- first communication modules；21- receiving coils；22- rechargeable batteries；23- second communication modules；
31- charge coils；32- battery cores；321- intermediate ledges；322- flange protrusions.
Embodiment
Embodiment 1
The present embodiment provides a kind of vivo implantation type Medical Devices wireless charging system, including charging end and receiving terminal；
Charging end, including, control device 11, signal generation device 12, frequency shift (FS) device 13, signal amplifying apparatus 14,
State monitoring apparatus 16, antenna module 15 and feedback device and/or communication device (feedback device and communication device alternative or
Person is set),
Signal generation device 12, for send one group of opposite polarity, fixed skew square-wave signal, by least two pairs poles
Property opposite single square wave composition, there is fixed skew between the single square wave of each pair, two couples of totally 4 single sides are illustrated in figure 9
Ripple；
Frequency shift (FS) device 13, for carrying out frequency shift (FS) to the square-wave signal for sending signal generation device 12, preferably
To offset up, the frequency after skew is (70%-99%) f0 or (101%-130%) f0, whereinL is the inductance of charge coil 31, and unit is H, and C is the capacitance of matching capacitance, and unit is F, and fo is
Resonant frequency value, unit is Hz, as shown in fig. 4 or 5, charge coil 31 and matching capacitance, is full-bridge type of drive or half-bridge
Type of drive；
Signal amplifying apparatus 14, for side that receive signal generation device generation or after amplifying through signal amplifying apparatus
Ripple signal；
Antenna module 15, including charge coil 31, matching capacitance and magnetic core, are produced for receiving signal generation device 12
Or the square-wave signal after amplification, and send electromagnetic wave, charge coil 31 and matching capacitance formation LC concussions, charge coil
31 can connect (Fig. 2) or in parallel (Fig. 3) is set with matching capacitance, and magnetic core is preferably FERRITE CORE, core structure be with
Middle intermediate ledge 321 and the flange protrusions 322 positioned at edge, between intermediate ledge 321 and flange protrusions 322
To accommodate the holding tank of charge coil 31, (intermediate ledge 321 is put down in a thickness direction with flange protrusions 322 by such as Fig. 6 a and 6b
Together), Fig. 7 a and 7b (intermediate ledge 321 is higher than flange protrusions 322), Fig. 8 a and 8b (non-flanged protuberance 322), respectively
For three kinds of specific embodiments, the front projection of magnetic core can be circular or polygon, and intermediate ledge 321 is preferably with filling
Electric coil 31 is concordant；
Condition checkout gear 16, transmission electric current or power for detecting signal amplifying apparatus 14, can use electric quantity acquisition
The transmission electric current of chip signal amplifying device 14 is to obtain performance number；
Control device 11, the performance number for the signal amplifying apparatus 14 that reception state detection means is detected or according to reception
Calculate performance number to current value is sent, and according to the performance number with apart from-performance number curve conversion obtain charge coil 31 with
The distance between receiving coil 21；
Feedback device, for reacting the distance between charge coil 31 and receiving coil 21 value, feedback device to user
Can be display screen, display control unit 11 converts obtained distance or the size for representing graphically out distance, can be with
It is acoustical generator, sends " ticking ", audible frequency is faster (more rapid) when distance is nearer, audible frequency is smaller when distance is more remote,
Can also be instruction lamp, the quantity or flicker frequency lighted by indicator lamp represent apart from size or vibrations electricity
Machine, distance is represented by shockproofness；
Communication device, for the distance between charge coil 31 and receiving coil 21 value to be sent into smart machine, leads to
Cross smart machine and react the distance between charge coil 31 and receiving coil 21 value, smart machine, such as mobile phone, flat board to user
Computer etc., distance is reflected by the display screen on smart machine or other feedback systems；
Receiving terminal, including the receiving coil 21 being implanted into human body and the rechargeable battery being connected with receiving coil 21, receive line
Circle 21 can receive the electromagnetic wave of antenna module 15 and produce electric current to charge for rechargeable battery.
The present embodiment use principle be：Line displacement is entered to signal frequency by frequency shift (FS) device 13, works as energy acceptance
Coil 21 apart from antenna module 15 farther out when, the degree of coupling of antenna module 15 and energy acceptance coil 21 is very low, passes through antenna sets
Guiding of the magnetic core to the magnetic line of force inside part 15, charging end is in low-load while floating (frequency) or high capacity, and (frequency is floated downward
When) stable state, power consumption is small during low-load, and power consumption is big during high capacity；When antenna module 15 moves closer to energy acceptance
During coil 21, the degree of coupling of antenna module 15 and energy acceptance coil 21 gradually strengthens, and load becomes big or diminished, drive device
Power consumption can increase or reduce with the enhancing of magnetic coupling degree, until coil block and energy acceptance coil 21 are complete
During alignment, preferably, load is maximum or minimum for degree of coupling, and the power of signal amplifying apparatus 14 is also maximum or minimum, signal
Degree of coupling between the power and coil of amplifying device 14 is linear, and which forms distance-performance number curve, control
Device 11 processed can intuitively judge the alignment between antenna module 15 and energy acceptance coil 21, antenna by power
Component 15 and the degree of coupling of energy acceptance coil 21 reach best, charge efficiency highest during this position, you can it is determined that optimal
Charge position.
What deserves to be explained is, after the completion of alignment function, frequency shift (FS) device 13 is no longer worked, and signal generation device 12 is produced
Waveform be directly entered signal amplifying apparatus 14, carry out charging operations.
The first communication module 17 and second communication module 23 that can be in communication with each other are respectively arranged with charging end and receiving terminal,
If long-time distance value does not change or during variable quantity very little, charging end is once communicated with receiving terminal, if charging end is not received
The signal of communication of receiving terminal, then illustrate that receiving terminal breaks down or is not keyed up or hypertelorism, charging end sends alarm and carried
Wake up user.
Embodiment 2
The present embodiment provides a kind of wireless charging method, comprises the following steps：
S1：One group of opposite polarity, the square-wave signal of fixed skew are sent, the frequency of square-wave signal is 70%f0, whereinL is the inductance of charge coil 31, and unit is H, and C is the capacitance of matching capacitance, and unit is F, and fo is
Resonant frequency value, unit is Hz；
S2：After by signal amplifying apparatus 14, square-wave signal is amplified, by the formation electromagnetic wave of charge coil 31, and it will fill
Electric coil 31 is close to receiving coil 21；
S3：The performance number of measurement signal amplifying device 14, regulation charge coil 31 position is charged when finding performance number maximum
The position of coil 31, that is, complete the alignment of charge coil 31 and receiving coil 21；
S4：The position of charge coil 31 is kept, regulation square-wave signal frequency is put to charge frequency and through signal amplifying apparatus 14
Big and charge coil 31 is changed into after electromagnetic wave to charge to rechargeable battery.
In S3 steps, the performance number of measurement signal amplifying device 14, in addition to charging wire is obtained by performance number calculating
Circle 31 and the distance of receiving coil 21, and feed back to user the process of the range information.
Embodiment 3
The present embodiment provides a kind of wireless charging method, comprises the following steps：
S1：One group of opposite polarity, the square-wave signal of fixed skew are sent, the frequency of square-wave signal is 90%f0, whereinL is the inductance of charge coil 31, and unit is H, and C is the capacitance of matching capacitance, and unit is F, and fo is
Resonant frequency value, unit is Hz；
S2：After by signal amplifying apparatus 14, square-wave signal is amplified, by the formation electromagnetic wave of charge coil 31, and it will fill
Electric coil 31 is close to receiving coil 21；
S3：The performance number of measurement signal amplifying device 14, regulation charge coil 31 position is charged when finding performance number maximum
The position of coil 31, that is, complete the alignment of charge coil 31 and receiving coil 21；
S4：The position of charge coil 31 is kept, regulation square-wave signal frequency is put to charge frequency and through signal amplifying apparatus 14
Big and charge coil 31 is changed into after electromagnetic wave to charge to rechargeable battery.
In S3 steps, the performance number of measurement signal amplifying device 14, in addition to charging wire is obtained by performance number calculating
Circle 31 and the distance of receiving coil 21, and feed back to user the process of the range information.
Embodiment 4
The present embodiment provides a kind of wireless charging method, comprises the following steps：
S1：One group of opposite polarity, the square-wave signal of fixed skew are sent, the frequency of square-wave signal is 99%f0, whereinL is the inductance of charge coil 31, and unit is H, and C is the capacitance of matching capacitance, and unit is F, and fo is
Resonant frequency value, unit is Hz；
S2：After by signal amplifying apparatus 14, square-wave signal is amplified, by the formation electromagnetic wave of charge coil 31, and it will fill
Electric coil 31 is close to receiving coil 21；
S3：The performance number of measurement signal amplifying device 14, regulation charge coil 31 position is charged when finding performance number maximum
The position of coil 31, that is, complete the alignment of charge coil 31 and receiving coil 21；
S4：The position of charge coil 31 is kept, regulation square-wave signal frequency is put to charge frequency and through signal amplifying apparatus 14
Big and charge coil 31 is changed into after electromagnetic wave to charge to rechargeable battery.
In S3 steps, the performance number of measurement signal amplifying device 14, in addition to charging wire is obtained by performance number calculating
Circle 31 and the distance of receiving coil 21, and feed back to user the process of the range information.
Embodiment 5
The present embodiment provides a kind of wireless charging method, comprises the following steps：
S1：One group of opposite polarity, the square-wave signal of fixed skew are sent, the frequency of square-wave signal is 101%f0, its
InL is the inductance of charge coil 31, and unit is H, and C is the capacitance of matching capacitance, and unit is F, fo
For resonant frequency value, unit is Hz；
S2：After by signal amplifying apparatus 14, square-wave signal is amplified, by the formation electromagnetic wave of charge coil 31, and it will fill
Electric coil 31 is close to receiving coil 21；
S3：The performance number of measurement signal amplifying device 14, regulation charge coil 31 position is charged when finding performance number minimum
The position of coil 31, that is, complete the alignment of charge coil 31 and receiving coil 21；
S4：The position of charge coil 31 is kept, regulation square-wave signal frequency is put to charge frequency and through signal amplifying apparatus 14
Big and charge coil 31 is changed into after electromagnetic wave to charge to rechargeable battery.
In S3 steps, the performance number of measurement signal amplifying device 14, in addition to charging wire is obtained by performance number calculating
Circle 31 and the distance of receiving coil 21, and feed back to user the process of the range information.
Embodiment 6
The present embodiment provides a kind of wireless charging method, comprises the following steps：
S1：One group of opposite polarity, the square-wave signal of fixed skew are sent, the frequency of square-wave signal is 105%f0, its
InL is the inductance of charge coil 31, and unit is H, and C is the capacitance of matching capacitance, and unit is F, fo
For resonant frequency value, unit is Hz；
S2：After by signal amplifying apparatus 14, square-wave signal is amplified, by the formation electromagnetic wave of charge coil 31, and it will fill
Electric coil 31 is close to receiving coil 21；
S3：The performance number of measurement signal amplifying device 14, regulation charge coil 31 position is charged when finding performance number minimum
The position of coil 31, that is, complete the alignment of charge coil 31 and receiving coil 21；
S4：The position of charge coil 31 is kept, regulation square-wave signal frequency is put to charge frequency and through signal amplifying apparatus 14
Big and charge coil 31 is changed into after electromagnetic wave to charge to rechargeable battery.
In S3 steps, the performance number of measurement signal amplifying device 14, in addition to charging wire is obtained by performance number calculating
Circle 31 and the distance of receiving coil 21, and feed back to user the process of the range information.
Embodiment 7
The present embodiment provides a kind of wireless charging method, comprises the following steps：
S1：One group of opposite polarity, the square-wave signal of fixed skew are sent, the frequency of square-wave signal is 130%f0, whereinL is the inductance of charge coil 31, and unit is H, and C is the capacitance of matching capacitance, and unit is F, and fo is
Resonant frequency value, unit is Hz；
S2：After by signal amplifying apparatus 14, square-wave signal is amplified, by the formation electromagnetic wave of charge coil 31, and it will fill
Electric coil 31 is close to receiving coil 21；
S3：The performance number of measurement signal amplifying device 14, regulation charge coil 31 position is charged when finding performance number minimum
The position of coil 31, that is, complete the alignment of charge coil 31 and receiving coil 21；
S4：The position of charge coil 31 is kept, regulation square-wave signal frequency is put to charge frequency and through signal amplifying apparatus 14
Big and charge coil 31 is changed into after electromagnetic wave to charge to rechargeable battery.
In S3 steps, measurement is obtained after the performance number of signal amplifying apparatus 14, in addition to is obtained by performance number calculating
Charge coil 31 and the distance of receiving coil 21, and feed back to user the process of the range information.
The current value of electric power detection chip detection signal amplifying apparatus 14 is set to obtain the work(of charging end in embodiment 2-7
Rate value so that more accurate must be measured to performance number.
Effect example
This experiment is the static emission current contrasted under different frequency and couples emission current when preferably, wherein antenna sets
The inductance L of charge coil 31 is 2.5mH in part 15, and the electric capacity C of matching capacitance is 0.1uF, and resonant frequency is 10KHz, during experiment
Antenna module 15 and receiving coil 21 keep horizontal positioned, and antenna module 15 and receiving coil 21 keep vertical height to be 1cm
Distance.
Static emission current is (surrounding is without receiving terminal) when being at a distance sufficiently large, the current value launched, and coupling is most
Emission current when good is emission current when receiving coil 21 is aligned with charge coil 31.In above process, voltage is protected
Hold constant, only electric current and voltage need to be carried out into product just can obtain power.
Static emission current and the result for coupling emission current when preferably under table different frequency
Illustrated by upper table：
1. absolute difference can all be produced by floating and floating downward, distance-performance number slope of a curve is not 0, can pass through signal
The performance number conversion of amplifying device 14 obtains distance to be positioned, and distance-performance number slope of a curve under reference frequency
For 0, it is impossible to positioned.Moreover, only needing to measure the power of charging end in position fixing process, it is not necessary to enter with et al. Ke equipment
Row communication, therefore fast response time.
2. absolute difference is bigger, illustrative graph slope is bigger, and error is smaller during positioning.
Little power consumption in position fixing process when 3. frequency floats, can be with power saving.Therefore, optimal selection is upper inclined 5%-10%
((105%-110%) f0).
Using the above-mentioned desirable embodiment according to the present invention as enlightenment, by above-mentioned description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property scope is not limited to the content on specification, it is necessary to its technical scope is determined according to right.
Claims (9)
1. a kind of vivo implantation type Medical Devices wireless charging method, includes following steps：
Send one group of opposite polarity, the square-wave signal of fixed skew, the frequency of square-wave signal for (70%-99%) f0 or
(101%-130%) f0, whereinL is the inductance of charge coil in the antenna module of charging end, and unit is
H, C are the capacitance of matching capacitance in the antenna module of charging end, and unit is F, and fo is resonant frequency value, and unit is Hz；
After by signal amplifying apparatus (14), square-wave signal is amplified, by charge coil formation electromagnetic wave, and by charge coil
Close to receiving coil (21)；
The current value or performance number of charging end are measured, regulation charge coil position, finds current value or performance number is maximum or minimum
When charge coil position；
Keep charge coil position constant, change square-wave signal frequency to charge frequency and charged.
2. vivo implantation type Medical Devices wireless charging method according to claim 1, it is characterised in that square-wave signal
Frequency is (105%-110%) f0.
3. vivo implantation type Medical Devices wireless charging method according to claim 1 or 2, it is characterised in that measure
To after the performance number of charging end, in addition to calculated by performance number and obtain charge coil and receiving coil (21) distance, and to making
User feeds back the process of the range information.
4. vivo implantation type Medical Devices wireless charging method according to claim 3, it is characterised in that according to advance survey
Measure the performance number to charging end-distance Curve conversion and obtain charge coil and receiving coil (21) distance.
5. the vivo implantation type Medical Devices wireless charging method according to claim 3 or 4, it is characterised in that by aobvious
Show device display distance information in the form of figure or data.
6. the vivo implantation type Medical Devices wireless charging method according to claim any one of 1-5, it is characterised in that logical
The current value of setting electric power detection chip detection signal amplifying apparatus (14) is crossed to obtain the performance number of charging end.
7. the vivo implantation type Medical Devices wireless charging method according to claim any one of 1-6, it is characterised in that fill
The iron core of electric end antenna module includes middle intermediate ledge and the flange protrusions positioned at edge, intermediate ledge and edge
It is receiving charge coil holding tank between protuberance.
8. vivo implantation type Medical Devices wireless charging method according to claim 7, it is characterised in that the iron core is
Ferrite iron core.
9. the vivo implantation type Medical Devices wireless charging method according to claim any one of 1-8, it is characterised in that institute
State square-wave signal to be made up of at least two pairs opposite polarity single harmonics, there is fixed skew between each pair single harmonic.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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Application publication date: 20171027 |