CN202524172U - Implantable wireless power receiving and transmitting signal circuit - Google Patents
Implantable wireless power receiving and transmitting signal circuit Download PDFInfo
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- CN202524172U CN202524172U CN2012200414836U CN201220041483U CN202524172U CN 202524172 U CN202524172 U CN 202524172U CN 2012200414836 U CN2012200414836 U CN 2012200414836U CN 201220041483 U CN201220041483 U CN 201220041483U CN 202524172 U CN202524172 U CN 202524172U
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Abstract
The utility model discloses an implantable wireless power receiving and transmitting signal circuit, which comprises a receiving end coil inductance, a receiving end tuning capacitor, a rectifier, a switch modulation circuit made up of two signal modulation switches and an inverter, a first load voltage supply circuit and a second load voltage circuit. Switches are chosen through digital modulation signals, two load circuits with different impedance of the receiving end inductance are switched, and thus the load modulation of the receiving end inductance can be realized. In addition, whether the digital modulation signals are 1 or 0, a driving load circuit can always be valid. Therefore, no power is wasted during the whole process of the load modulation, in-vitro data transmission is ensured and high efficient power receiving is also realized, and the demand that an implantable device saves power as much as possible can be met.
Description
Technical field
The utility model belongs to the implantable medical electronic technology field, is specifically related to the implanted circuit of a kind of integrated wireless electric energy reception and transmission signals function.
Background technology
Development of integrated circuits makes increasing implantation medical equipment to realize through circuit chip, such as the muscle of human body and nerve stimulator, neural data logger, retina stimulator etc.Usually, these implantation medical equipments all can have two common requirements: one is power supply, and another is to external transmission data.
At present; The required power supply of implantation medical equipment can be realized through the wireless power transmission of known electromagnetic induction form; Just be coupled transmission of power by external transmitting terminal inductance coil and the receiving terminal inductance coil in the body; This wireless power transmission is utilized penetration by electromagnetic fields skin, has avoided using the electric wire pierce and discomfort that the patient is produced.On the other hand, implantation medical equipment also need pass to the signal that records external through wireless transmission, and this can accomplish through known load-modulate (load modulation).The essence of load-modulate is the load that changes receiving terminal inductance in the body, just can change the equiva lent impedance of external transmitting terminal inductance like this through inductance coupling high, thereby realizes the signal of ASK (Amplitude Shift Keying, amplitude shift keying) modulation.
Instantly, the solution taked of advanced implantation medical equipment is: the inductance coil with a pair of coupling realizes simultaneously wireless energy supply and transmission signals, a promptly multiplexing inductance coupling high path.
For example: be entitled as " Data transmission from an implantable biotelemeter by load-shift keying using circuit configuration modulator " people such as Z.Tang (is recorded in IEEE Transactions on Biomedical Engineering; Vol.42; No.5; The circuit of a kind of implantation type wireless power supply reception and transmission signals is disclosed in the article 1995); Comprise AC/DC changeover switch (also being referred to as rectifier rectifier), Voltage stabilizing module (voltage regulator) and signal modulation switch (switch); And want driven load circuit (load circuit), wherein, at signal modulation switch of the two ends of receiving terminal inductance parallel connection; Thereby come bypass receiving terminal inductance to change the load of receiving terminal inductance through close switch, but by-pass current can be introduced the loss of power consumption.
Again for example: be entitled as " Design and analysis of an adaptive transcutaneous power telemetry for biomedical implants " people such as G.Wang (is recorded in IEEETransactions on Circuits and Systems-I; Vol.52; No.10; The circuit of another kind of implantation type wireless power supply reception and transmission signals is disclosed in the article 2005); Comprise AC/DC changeover switch (also being referred to as rectifier rectifier), Voltage stabilizing module (voltage regulator) and signal modulation switch (switch) equally, and want driven load circuit (load circuit), wherein; The signal modulation switch that has added a series connection in the output of rectifier module; Through opening the open a way load circuit of receiving terminal inductance of switch, but open-circuit condition can be cut to the electric current of load circuit, and at this moment power wastage is on the receiving terminal inductance.
It is thus clear that two kinds of above-mentioned circuit solutions have all produced the waste of sizable power consumption in the process of transmission signals, this is disadvantageous for the implanted electronic product.
Summary of the invention
The utility model provides a kind of implantation type wireless electric energy to receive and the transmission signals circuit, can reduce or avoid power wastage, thereby solves the problem that exists in the prior art.
A kind of implantation type wireless electric energy receives and the transmission signals circuit; Comprise: inductor capacitor resonant circuit, rectifier, switch modulation circuit, the first load voltage supply circuit and the second load voltage supply circuit; Wherein, said inductor capacitor resonant circuit is made up of a receiving terminal coil inductance and the parallel connection of a receiving terminal tuning capacity; Said switch modulation circuit is made up of signal modulation switch and an inverter of two parallel connections; The signal modulation switch of said two parallel connections is the first signal modulation switch and secondary signal modulation switch; The control end of the first signal modulation switch links to each other through inverter with the control end of secondary signal modulation switch, and the control end of the first signal modulation switch inserts digital modulation signals; The said first load voltage supply circuit comprises: first circuit that is made up of first pressurizer and first load circuit of series connection and first filter capacitor parallelly connected with said first circuit; The said second load voltage supply circuit comprises: the second circuit and second filter capacitor parallelly connected with said second circuit that are made up of second pressurizer and second load circuit of series connection;
Wherein, Said inductor capacitor resonant circuit is connected with the ac input end of said rectifier; The positive output end of said rectifier all links to each other with an end of the first signal modulation switch, an end of secondary signal modulation switch; The other end of the first signal modulation switch links to each other with the positive pole of first filter capacitor and the input of first pressurizer simultaneously; The other end of secondary signal modulation switch links to each other an end of output termination first load circuit of first pressurizer, an end of output termination second load circuit of second pressurizer simultaneously with the positive pole of second filter capacitor and the input of second pressurizer; The negative output terminal of said rectifier both linked to each other with the negative pole of first filter capacitor, the other end of first load circuit, linked to each other with the negative pole of second filter capacitor, the other end of second load circuit again.
Preferred first load circuit is different with the impedance of second load circuit, and the load that so just can when switching first load circuit and second load circuit, change the receiving terminal inductance realizes load-modulate.
In the utility model, the said first load voltage supply circuit and the second load voltage supply circuit are separate, promptly the output voltage of first pressurizer can greater than, be equal to or less than the output voltage of second pressurizer.
The operation principle that the implantation type wireless electric energy of the utility model receives and the transmission signals circuit moves is following:
Receiving terminal coil inductance and receiving terminal tuning capacity parallel resonance produce an alternating voltage in the carrier frequency of external transmitting terminal circuit intermediate power amplifier output signal; Alternating voltage is input to rectifier; The anode output of rectifier is selected to drive the load circuit of the different impedances of two-way by switch; One road warp, the first signal modulation switch connects the input of first filter capacitor and first pressurizer, and drives first load circuit by the output of first pressurizer; Another road connects the input of second filter capacitor and second pressurizer through the secondary signal modulation switch, and drives second load circuit by the output of second pressurizer.
The selection of the first signal modulation switch and secondary signal modulation switch is controlled through the switch modulation circuit.When digital modulation signals is ' 1 '; The first signal modulation switch is closed; Modulation signal ' 1 ' is transformed into ' 0 ' through inverter simultaneously; Turn-off the secondary signal modulation switch, the output of rectifier is communicated with the positive pole of first filter capacitor and the input of first pressurizer through the first signal modulation switch, and the output of first pressurizer only drives first load circuit; And when digital modulation signals is ' 0 '; The first signal modulation switch turn-offs; Modulation signal ' 0 ' becomes ' 1 ' through inverter simultaneously; Closed secondary signal modulation switch, the output of rectifier is communicated with the positive pole of second filter capacitor and the input of second pressurizer through the secondary signal modulation switch, and second pressurizer output only drive second load circuit.Thus it is clear that, can come selector switch through digital modulation signals itself in this circuit, thereby realize selection the two-way load circuit.And no matter digital modulation signals is ' 1 ' still ' 0 ', always has No. one load circuit to be driven, and in transmission signals, just can keep high efficiency electric energy reception like this, has avoided the waste of power consumption during the transmission signals.
Compared with prior art, reception of the implantation type wireless electric energy of the utility model and transmission signals circuit have following beneficial technical effects:
Can come selector switch through digital modulation signals itself,, thereby realize the load-modulate of receiving terminal the switching of the load circuit of the different impedances of the two-way of receiving terminal inductance; And, ' 1 ' or ' 0 ' of corresponding digital modulation signals, always having one the road, to drive load circuit effective, so all there is not the waste of power consumption during load-modulate whole.Therefore, the utility model has been avoided during load-modulate influence that electric energy is received, has guaranteed in to external transmission data, to realize that electric energy receives efficiently, has satisfied the requirement that the implanted instrument will be economized power consumption as much as possible.The implantation type wireless electric energy of the utility model receives and the transmission signals circuit can be applied in the system of RFID and wireless senser easily.
Description of drawings
Fig. 1 is the circuit diagram that adopts the implanted instrument of existing a kind of implantation type wireless electric energy reception and transmission signals circuit.
Fig. 2 is the circuit diagram that adopts the implanted instrument of existing another kind of implantation type wireless electric energy reception and transmission signals circuit.
Fig. 3 adopts the implantation type wireless electric energy of the utility model to receive and the circuit diagram of the implanted instrument of transmission signals circuit.
Fig. 4 be when adopting circuit shown in Figure 3 in the body with extracorporeal circuit in the synchronous sketch map of coherent signal transient state.
Embodiment
As shown in Figure 1, adopt existing a kind of implantation type wireless electric energy to receive and the circuit of the implanted instrument of transmission signals circuit, comprising: known external transmitting terminal circuit 1 receives and transmission signals circuit 5 with existing a kind of implantation type wireless electric energy.External transmitting terminal circuit 1 comprises power amplifier 2, external tuning capacity 3 and external transmitting terminal coil inductance 4; Wherein, External transmitting terminal coil inductance 4 is connected with external tuning capacity 3, and also resonance is in the carrier frequency of power amplifier 2 output signals, and an end of external tuning capacity 3 links to each other with the output of power amplifier 2.The implantation type wireless electric energy receives and transmission signals circuit 5 comprises receiving terminal coil inductance 6, tuning capacity 7, signal modulation switch 8, rectifier 9, filter capacitor 10, pressurizer 11 and load circuit 12; Parallelly connected and the resonance of receiving terminal coil inductance 6 and tuning capacity 7 is in the carrier frequency of above-mentioned external transmitting terminal circuit 1 intermediate power amplifier 2 output signals; The alternating voltage that produces on the receiving terminal coil inductance 6 is through rectifier 9 and filter capacitor 10; Produce a direct voltage and input to pressurizer 11; The output of pressurizer 11 provides and drives the required voltage and current of load circuit 12, thereby has realized the energy supply of implanted instrument.On the other hand, then be to come control signal modulation switch 8 to realize load-modulate to external transmission signals through digital modulation signals, the load that closure signal modulation switch 8 can bypass receiving terminal coil inductance 6, thus be used for realizing load-modulate.The shortcoming of this circuit has the very big by-pass current signal modulation switch 8 of flowing through when being bypass, produced extra power consumption.
As shown in Figure 2, adopt existing another kind of implantation type wireless electric energy to receive and the circuit of the implanted instrument of transmission signals circuit, comprising: known external transmitting terminal circuit 1 receives and transmission signals circuit 23 with existing another kind of implantation type wireless electric energy.External transmitting terminal circuit 1 comprises power amplifier 2, external tuning capacity 3 and external transmitting terminal coil inductance 4; Wherein, External transmitting terminal coil inductance 4 is connected with external tuning capacity 3, and also resonance is in the carrier frequency of power amplifier 2 output signals, and an end of external tuning capacity 3 links to each other with the output of power amplifier 2.The implantation type wireless electric energy receives and transmission signals circuit 23 comprises receiving terminal coil inductance 6, tuning capacity 7, rectifier 9, filter capacitor 10, signal modulation switch 13, pressurizer 11 and load circuit 12; Parallelly connected and the resonance of receiving terminal coil inductance 6 and tuning capacity 7 is in the carrier frequency of above-mentioned external transmitting terminal circuit 1 intermediate power amplifier 2 output signals; The alternating voltage that produces on the receiving terminal coil inductance 6 is through rectifier 9 and filter capacitor 10; Produce a direct voltage and input to pressurizer 11; The output of pressurizer 11 provides and drives the required voltage and current of load circuit 12, thereby has realized the energy supply of implanted instrument.On the other hand, then be to come control signal modulation switch 13 to realize load-modulate to external transmission signals through digital modulation signals, opening signal modulation switch 13 load of receiving terminal coil inductance 6 of can opening a way, thus be used for realizing load-modulate.The shortcoming of this circuit is that electric energy that open circuit the time receives is dissipated on the inductance coil of receiving terminal and is not used to drive load circuit 12.
It is thus clear that all there is the defective of power wastage in above-mentioned 2 kinds of solutions as depicted in figs. 1 and 2 of the prior art.
Specify the utility model below in conjunction with embodiment and accompanying drawing, but the utility model is not limited in this.
As shown in Figure 3, the circuit of the implantation type wireless electric energy reception of employing the utility model and the implanted instrument of transmission signals circuit comprises: the implantation type wireless electric energy of known external transmitting terminal circuit 1 and the utility model receives and transmission signals circuit 24.
External transmitting terminal circuit 1 comprises power amplifier 2, external tuning capacity 3 and external transmitting terminal coil inductance 4; Wherein, External transmitting terminal coil inductance 4 is connected with external tuning capacity 3, and also resonance is in the carrier frequency of power amplifier 2 output signals, and an end of external tuning capacity 3 links to each other with the output of power amplifier 2.
The implantation type wireless power supply receives and transmission signals circuit 24, comprising: receiving terminal coil inductance 6, receiving terminal tuning capacity 7, rectifier 9, the first signal modulation switch 14, secondary signal modulation switch 15, inverter 22, first pressurizer 18, first load circuit 20, first filter capacitor 16, second pressurizer 19, second load circuit 21 and second filter capacitor 17.
7 parallel connections constitute inductor capacitor resonant circuit to receiving terminal coil inductance 6 with the receiving terminal tuning capacity; The first signal modulation switch 14, secondary signal modulation switch 15 and inverter 22 constitute the switch modulation circuit; Wherein the control end of the control end of the first signal modulation switch 14 and secondary signal modulation switch 15 links to each other through inverter 22, and the control end of the first signal modulation switch 14 also inserts digital modulation signals simultaneously; First pressurizer 18 is connected with first load circuit 20 and is constituted first circuit, first circuit and first filter capacitor, the 16 parallelly connected formation first load voltage supply circuit; Second pressurizer 19 and 21 series connection of second load circuit constitute second circuit, second circuit and second filter capacitor, the 17 parallelly connected formation second load voltage supply circuit.
Inductor capacitor resonant circuit is connected with the ac input end of rectifier 9; The positive output end of rectifier 9 all links to each other with an end of the first signal modulation switch 14, an end of secondary signal modulation switch 15; The other end of the first signal modulation switch 14 links to each other with the positive pole of first filter capacitor 16 and the input of first pressurizer 18 simultaneously; The other end of secondary signal modulation switch 15 links to each other with the positive pole of second filter capacitor 17 and the input of second pressurizer 19 simultaneously; One end of output termination first load circuit 20 of first pressurizer 18; One end of output termination second load circuit 21 of second pressurizer 19, the negative output terminal of rectifier 9 both linked to each other with the negative pole of first filter capacitor 16, the other end of first load circuit 20, linked to each other with the negative pole of second filter capacitor 17, the other end of second load circuit 21 again.
In the foregoing circuit, the first load voltage supply circuit and the second load voltage supply circuit are separate, the output voltage of first pressurizer 18 can greater than, be equal to or less than the output voltage of second pressurizer 19.
In the foregoing circuit, receiving terminal coil inductance 6 and the carrier frequency of receiving terminal tuning capacity 7 parallel resonances in external transmitting terminal circuit 1 intermediate power amplifier 2 output signals produce an alternating voltage; Alternating voltage is input to rectifier 9; The anode output of rectifier 9 is selected to drive the load circuit 20,21 of the different impedances of two-way by switch; One road warp, the first signal modulation switch 14 connects the input of first filter capacitor 16 and first pressurizer 18; And driving first load circuit 20 by the output of first pressurizer 18, another road connects the input of second filter capacitor 17 and second pressurizer 19 through secondary signal modulation switch 15, and drives second load circuit 21 by the output of second pressurizer 19.
The selection of the first signal modulation switch 14 and secondary signal modulation switch 15 is controlled through the switch modulation circuit.Known digital modulation signals is ' 1 ', saltus step between ' 0 '.When digital modulation signals is ' 1 '; The first signal modulation switch, 14 closures; Modulation signal ' 1 ' is transformed into ' 0 ' through inverter 22 simultaneously; Turn-off secondary signal modulation switch 15, the anode output of rectifier 9 is communicated with the positive pole of first filter capacitor 16 and the input of first pressurizer 18 through the first signal modulation switch 14, and the output of first pressurizer 18 only drives first load circuit 20; And when said modulation signal is ' 0 '; The first signal modulation switch 14 turn-offs; Modulation signal ' 0 ' becomes ' 1 ' through inverter 22 simultaneously; Closed secondary signal modulation switch 15, the anode output of rectifier 9 is communicated with the positive pole of second filter capacitor 17 and the input of second pressurizer 19 through secondary signal modulation switch 15, and the output of second pressurizer 19 only drives second load circuit 21.The load circuit 20 of the different impedances of above-mentioned two-way and the switching of 21 corresponding digital modulation signals are changing the load of receiving terminal inductance 6; Realized load-modulate; The more important thing is no matter digital modulation signals is ' 1 ' or ' 0 ', always has one tunnel load to be driven; In transmission signals, just can keep high efficiency electric energy to receive like this, avoid the waste of power consumption during the transmission signals.
Fig. 4 be when adopting circuit shown in Figure 3 in the body with extracorporeal circuit in the synchronous sketch map of coherent signal transient state.Promptly; With the digital modulation sequence of at random one group " 100100....... " as the digital modulation signals in the circuit shown in Figure 3; Correspondingly; The electric current I ind that becomes in the time of in circuit shown in Figure 3, can producing one on the external inductance coil 4 is as shown in the figure, and visible its digital modulation sequence with " 100100....... " is corresponding, and it is thus clear that Iind be one and be easy to by the ASK signal of demodulation.Meanwhile, the first load voltage supply circuit and the second load voltage supply circuit have produced illustrated two voltage signals respectively: the driving voltage V1 of first load circuit and the driving voltage V2 of second load circuit.This shows, can realize efficiently simultaneously to external signal transmission with to the supply of electrical energy of implanted instrument in the foregoing circuit.
Claims (2)
1. an implantation type wireless electric energy receives and the transmission signals circuit; It is characterized in that; Comprise: inductor capacitor resonant circuit, rectifier, switch modulation circuit, the first load voltage supply circuit and the second load voltage supply circuit; Wherein, said inductor capacitor resonant circuit is made up of a receiving terminal coil inductance and the parallel connection of a receiving terminal tuning capacity; Said switch modulation circuit is made up of signal modulation switch and an inverter of two parallel connections; The signal modulation switch of said two parallel connections is the first signal modulation switch and secondary signal modulation switch; The control end of the first signal modulation switch links to each other through inverter with the control end of secondary signal modulation switch, and the control end of the first signal modulation switch inserts digital modulation signals; The said first load voltage supply circuit comprises: first circuit that is made up of first pressurizer and first load circuit of series connection and first filter capacitor parallelly connected with said first circuit; The said second load voltage supply circuit comprises: the second circuit and second filter capacitor parallelly connected with said second circuit that are made up of second pressurizer and second load circuit of series connection;
Wherein, Said inductor capacitor resonant circuit is connected with the ac input end of said rectifier; The positive output end of said rectifier all links to each other with an end of the first signal modulation switch, an end of secondary signal modulation switch; The other end of the first signal modulation switch links to each other with the positive pole of first filter capacitor and the input of first pressurizer simultaneously; The other end of secondary signal modulation switch links to each other an end of output termination first load circuit of first pressurizer, an end of output termination second load circuit of second pressurizer simultaneously with the positive pole of second filter capacitor and the input of second pressurizer; The negative output terminal of said rectifier both linked to each other with the negative pole of first filter capacitor, the other end of first load circuit, linked to each other with the negative pole of second filter capacitor, the other end of second load circuit again.
2. implantation type wireless electric energy as claimed in claim 1 receives and the transmission signals circuit, it is characterized in that said first load circuit is different with the load impedance of second load circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200414836U CN202524172U (en) | 2012-02-09 | 2012-02-09 | Implantable wireless power receiving and transmitting signal circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200414836U CN202524172U (en) | 2012-02-09 | 2012-02-09 | Implantable wireless power receiving and transmitting signal circuit |
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| CN202524172U true CN202524172U (en) | 2012-11-07 |
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| CN2012200414836U Expired - Fee Related CN202524172U (en) | 2012-02-09 | 2012-02-09 | Implantable wireless power receiving and transmitting signal circuit |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103699128A (en) * | 2013-12-27 | 2014-04-02 | 长沙理工大学 | Motion control system for electromagnetic track type mobile robots and control method |
| CN105141327A (en) * | 2015-07-27 | 2015-12-09 | 北京理工大学 | Full-digital near field communication transmitter and implantable medical instrument |
| JP2018148615A (en) * | 2017-03-01 | 2018-09-20 | エイブリック株式会社 | Power supply system, power receiving device, and power supply method |
| US10299095B2 (en) | 2014-02-10 | 2019-05-21 | Intel Corporation | Wireless load modulation |
| DE102015100251B4 (en) | 2014-02-10 | 2023-12-21 | Intel Corporation | Wireless load modulation |
-
2012
- 2012-02-09 CN CN2012200414836U patent/CN202524172U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103699128A (en) * | 2013-12-27 | 2014-04-02 | 长沙理工大学 | Motion control system for electromagnetic track type mobile robots and control method |
| US10299095B2 (en) | 2014-02-10 | 2019-05-21 | Intel Corporation | Wireless load modulation |
| DE102015100251B4 (en) | 2014-02-10 | 2023-12-21 | Intel Corporation | Wireless load modulation |
| CN105141327A (en) * | 2015-07-27 | 2015-12-09 | 北京理工大学 | Full-digital near field communication transmitter and implantable medical instrument |
| CN105141327B (en) * | 2015-07-27 | 2017-11-24 | 北京理工大学 | Digital near field communication transmitter and implantation medical equipment |
| JP2018148615A (en) * | 2017-03-01 | 2018-09-20 | エイブリック株式会社 | Power supply system, power receiving device, and power supply method |
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