CN110384860B - Circuit for automatically adjusting output power of wireless coupling transmission circuit - Google Patents
Circuit for automatically adjusting output power of wireless coupling transmission circuit Download PDFInfo
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- 230000008878 coupling Effects 0.000 title claims abstract description 67
- 238000010168 coupling process Methods 0.000 title claims abstract description 67
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 67
- 230000005540 biological transmission Effects 0.000 title claims abstract description 23
- 239000007943 implant Substances 0.000 claims abstract description 63
- 238000001514 detection method Methods 0.000 claims abstract description 28
- 238000006243 chemical reaction Methods 0.000 claims description 17
- 238000005259 measurement Methods 0.000 claims description 5
- 230000000087 stabilizing effect Effects 0.000 claims description 4
- 239000010753 BS 2869 Class E Substances 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 3
- 230000005674 electromagnetic induction Effects 0.000 claims description 2
- 230000000638 stimulation Effects 0.000 abstract description 3
- 230000001939 inductive effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 8
- 239000003990 capacitor Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000133 brain stem Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 210000003477 cochlea Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003828 downregulation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 210000001525 retina Anatomy 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/02—Details
- A61N1/08—Arrangements or circuits for monitoring, protecting, controlling or indicating
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/36036—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation of the outer, middle or inner ear
- A61N1/36038—Cochlear stimulation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/36046—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation of the eye
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/3605—Implantable neurostimulators for stimulating central or peripheral nerve system
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Abstract
The invention discloses a circuit for automatically adjusting the output power of a wireless coupling transmission circuit, wherein a central control unit is connected with a power supply voltage control module; the E-type amplifier is connected with the central control module and used for amplifying signals of the implant controlled by the central control module; the wireless coupling module is connected with the E-class amplifier and transmits the amplified signals into the implant in a wireless coupling mode; the current detection module is connected with the wireless coupling module and converts the current signal into a digital signal; the analog load module is connected with the wireless coupling module and provides an analog load which can be controlled by a digital signal; the implant processing module is connected with the current detection module and the analog load module and controls the analog load according to signals input by the central control unit. The invention adjusts the output power of the implanted medical equipment for transmitting signal energy in an inductive coupling mode, adjusts the output power of the E-type amplifier according to the actual stimulation condition of a user and the thickness of the skin flap, reduces the power consumption and improves the efficiency.
Description
Technical Field
The invention belongs to the field of implantable medical devices, and particularly relates to a circuit for automatically adjusting output power of a wireless coupling transmission circuit.
Background
The wireless coupling transmission circuit has very wide application in the implanted medical instrument, and especially for the application of the artificial cochlea, the auditory brainstem stimulation system, the artificial retina and other implants with smaller distance from the external equipment, the wireless coupling transmission circuit can be used in a mode of pairing the external equipment and the internal equipment for a long time, so that the battery is prevented from being placed in the body, the use time limit of the implants is greatly prolonged, the use experience of a user is improved, and a feasible scheme is provided for the application of the implants needing real-time stimulation with larger power consumption.
In the practical use process, the circuit has the defect that the thickness of the skin flap of the user is different from the electric quantity which is actually required to be stimulated, so that in order to ensure that all users can normally use the product, the circuit is usually required to ensure the normal use under the conditions of long distance and heavy load, but the extra energy is emitted by the extracorporeal equipment for most users. The redundant energy is generally consumed through the current on the zener diode, so that unnecessary energy waste is caused, the use time of a user is shortened, and the use experience of the user is reduced.
Disclosure of Invention
Therefore, the present invention aims to provide a circuit for automatically adjusting the power of a wireless coupling transmission circuit, by which the output power of an E-class amplifier can be adjusted according to the current passing through a zener diode without any influence on an implanter, so that the current passing through the zener diode is reduced to a lower level, and the power consumption of the whole system is reduced.
In order to achieve the above object, the present invention provides a circuit for automatically adjusting output power of a wireless coupling transmission circuit, at least comprising: the device comprises a power supply voltage control module, a central control unit, an E-class amplifier, a wireless coupling module, a current detection module, an analog load module and an implant processing module, wherein,
The power supply voltage control module comprises a direct current voltage conversion circuit and a feedback resistance adjusting array, wherein,
The direct-current voltage conversion circuit provides power supply voltage for the class-E amplifier, and the voltage value is controlled by the feedback resistor adjusting array;
The feedback resistor adjusting array is controlled by a digital signal output by the central control unit and comprises a plurality of switches and resistors, and the output resistance is adjusted by opening and closing different switches;
the central control unit comprises a user data memory, a forward signal controller, a reverse signal decoder, a central computer and a feedback signal generator, wherein,
The user data memory is connected with the central computer and stores the actual debugging data of the user;
The forward signal controller is connected with the central computer and the class E amplifier, modulates the data information calculated by the central computer and then sends the data information to the class E amplifier;
The reverse signal decoder is connected with the central computer and the wireless coupling module, demodulates and decodes the implant induction signal transmitted by the wireless coupling module, and sends the signal to the central computer for further processing;
The central computer is connected with the user data memory, the forward signal controller, the reverse signal decoder and the feedback signal generator respectively, calculates the size of the implant analog load according to the data in the user data memory and sends out corresponding control signals through the forward signal controller; calculating the size of a feedback resistor according to the output signal of the reverse signal decoder; emitting by a feedback signal generator;
The feedback signal generator is connected with the central computer and the feedback resistor adjusting array and is used for controlling a switch in the feedback resistor adjusting array according to the calculation result of the central computer and adjusting the resistance value of the feedback resistor;
The E-type amplifier is connected with the wireless coupling module, amplifies the signal of the forward signal controller and transmits the signal into the implant through the wireless coupling module;
The wireless coupling module is connected with the E-type amplifier, the current detection module, the implant processing module and the reverse signal decoder and is used for transmitting signals and energy amplified by the E-type amplifier to the implant processing module and transmitting the digital measurement signals stored by the implant processing module into the reverse signal decoder outside the body in an electromagnetic induction mode;
the current detection module comprises a rectifying circuit, a voltage stabilizing diode, a detection resistor, a differential amplifier and an analog-to-digital converter, wherein,
The rectification circuit is connected with the wireless coupling module, and rectifies the output of the wireless coupling module and changes the output into a direct current signal;
The voltage stabilizing diode is connected with the detection resistor in series, and the branch is connected with the rectifying circuit in parallel to stabilize the voltage of the rectifying circuit at a fixed value;
The two ends of the detection resistor are connected with the differential amplifier and are used for converting the current flowing through the zener diode into a voltage signal through the resistor;
the differential amplifier is connected with the analog-to-digital converter and amplifies the output of the detection resistor by a fixed multiple;
The analog-to-digital converter is connected with the implant processing module, and the signals amplified by the differential amplifier are subjected to analog-to-digital conversion and are sent to the implant processing module;
The implant processing module comprises a forward decoding circuit, an implant processing circuit, a load control circuit, a register and a reverse output circuit, wherein,
The forward decoding circuit is connected with the wireless coupling module and the implant processing circuit, demodulates and decodes the input of the wireless coupling module and sends the demodulated and decoded input to the implant processing circuit;
The implant processing circuit is connected with all other sub-modules of the implant processing module, and in a forward working mode, a digital control signal is sent to control the load control circuit according to the output of the forward decoding circuit, and in a reverse working mode, the data stored in the register is taken out and is sent to the reverse output circuit;
the register is connected with the analog-to-digital converter and used for storing the output of the analog-to-digital converter;
The reverse output circuit is connected with the wireless coupling module, and transmits signals output by the implant processing circuit to the outside of the body in a mode of changing resonance of the wireless coupling module;
The analog load module is connected with the rectifying circuit and the implant processing module, and the implant processing module controls the analog load module through digital signals according to commands transmitted from outside the body to adjust the load of the wireless coupling module.
Preferably, the analog load module comprises a plurality of switches and a plurality of resistors, wherein one switch and one resistor are connected in series to form a group, and the plurality of groups are connected in parallel and then connected in parallel with the rectifying circuit.
Preferably, the output voltage of the direct current voltage conversion circuit is controlled by the output of the feedback resistor adjustment array.
Preferably, the feedback resistor adjustment array output is adjusted in accordance with the current through the sense resistor.
Preferably, the analog load module output is controlled in accordance with the output of the user data store.
Preferably, the measurement precision of the analog-digital conversion circuit is 2-18 bits.
Preferably, the output range of the direct-current voltage conversion circuit is 2-5 volts.
Preferably, the resistance value of the detection resistor ranges from 1 ohm to 100 ohm.
The invention has the beneficial effects that: the circuit digitally detects the current passing through the voltage-stabilizing diode, controls the output power of the whole system by adjusting the power supply voltage of the class E amplifier, and avoids the actual influence of a user in the detection process by using an analog load mode.
Drawings
In order to make the objects, technical solutions and advantageous effects of the present invention more clear, the present invention provides the following drawings for description:
FIG. 1 is an overall block diagram of a specific application example of a circuit for automatically adjusting output power of a wireless coupling transmission circuit according to an embodiment of the present invention;
FIG. 2 is a block diagram of an embodiment of a circuit for automatically adjusting output power of a wireless coupling transmission circuit according to the present invention;
FIG. 3 is a schematic circuit diagram of a specific application example of a circuit for automatically adjusting output power of a wireless coupling transmission circuit according to an embodiment of the present invention;
Fig. 4 is a waveform diagram of a power adjustment process of a specific application example of the circuit for automatically adjusting the output power of the wireless coupling transmission circuit according to the embodiment of the present invention.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1-3, there is shown an overall block diagram, a detailed block diagram and a schematic diagram of a circuit 10 for automatically adjusting the output power of a wireless coupling transmission circuit in accordance with an embodiment of the present invention, wherein,
A circuit 10 for automatically adjusting the output power of a wireless coupling transmission circuit, comprising at least: a supply voltage control module 110, a central control unit 120, a class e amplifier 130, a wireless coupling module 140, a current detection module 150, an analog load module 160, and an implant processing module 170, wherein,
The supply voltage control module 110 includes a dc voltage conversion circuit 111 and a feedback resistance adjustment array 112, wherein,
The direct-current voltage conversion circuit 111 provides a power supply voltage for the class-E amplifier 130, and the voltage value is controlled by the feedback resistor adjustment array 112;
The feedback resistor adjusting array 112 is composed of a first resistor R1, a plurality of resistors R F1～RFN and a plurality of switches K F1～KFN, and controls the switch K F1～KFN to be opened and closed by a control signal sent by the feedback signal generator 125 in the central control unit 120, so as to adjust the output voltage value VDD of the dc voltage converting circuit 111 according to the resistor proportion;
The central control unit 120 comprises a user data memory 121, a forward signal controller 122, a reverse signal decoder 123, a central calculator 124 and a feedback signal generator 125, wherein,
The user data memory 121 is connected to the central computer 124, and stores the actual debug data of the user;
The forward signal controller 122 is connected to the central computer 124 and the class E amplifier 130, and modulates the data information calculated by the central computer 124 and sends the modulated data information to the class E amplifier 130;
The reverse signal decoder 123 is connected with the central computer 124 and the wireless coupling module 140, demodulates and decodes the implant induction signal transmitted by the wireless coupling module 140, and sends the signal to the central computer 124 for further processing;
The central computer 124 is connected to other modules of the central control unit 120, and is configured to calculate the magnitude of the implant analog load according to the data in the user data memory 121, send a corresponding control signal through the forward signal controller 122, calculate the magnitude of the feedback resistance according to the output signal of the reverse signal decoder 123, and send the feedback resistance through the feedback signal generator 125;
the feedback signal generator 125 is connected to the central computer 124 and the feedback resistor adjustment array 112, and is configured to control the switch K F1～KFN in the feedback resistor adjustment array 112 according to the calculation result of the central computer 124, and adjust the resistance value of the feedback resistor;
The class E amplifier 130 is connected to the wireless coupling module 140, and is composed of a MOS tube M1, an inductor L1 and a capacitor C1, amplifies the signal of the forward signal controller 122, and transmits the amplified signal into the implant through the wireless coupling module 140;
the wireless coupling module 140 is connected with the E-class amplifier 130, the current detecting module 150, the implant processing module 170 and the inverse signal decoder 123, and is composed of inductors L2, L3, L4, capacitors C2, C3, a diode D1 and a resistor R2, wherein the inductors L2 and L3 respectively form a series resonant circuit and a parallel resonant circuit with the capacitors C2 and C3, the inductors L2 and L3 are attracted to each other, the amplified signals and energy of the E-class amplifier 130 are transferred to the implant through the inductive coupling mode, the parallel resonant circuit formed by the inductor L3 and the capacitor C3 is connected with the diode D1 and the resistor R2, so that the alternating current signal with the direct current component of 0 is converted into the alternating current signal with the direct current component, and is output to the forward decoding circuit 171 in the implant processing module 170, the inverse output circuit 175 in the implant processing module 170 is connected with the parallel resonant circuit for outputting the inverse signal by changing the resonance of the parallel resonant circuit, the rectifying circuit 151 in the current detecting module 150 is also connected with the parallel resonant circuit, and the inductor L4 is used for sensing the signal L2 and outputting the decoded signal with the amplitude of the inverse decoding signal;
the current detection module 150 includes a rectifying circuit 151, a zener diode 152, a detection resistor 153, a differential amplifier 154, and an analog-to-digital converter 155, wherein,
The rectifying circuit 151 is connected to the wireless coupling module 140, and is composed of a diode D2 and a capacitor C4, and rectifies the output of the wireless coupling module 140 into a dc signal;
the zener diode 152 is connected in series with the detection resistor 153, and the branch is connected in parallel with the rectifying circuit 151 to stabilize the voltage of the rectifying circuit at a fixed value;
The two ends of the detection resistor 153 are connected with the differential amplifier 154, and are used for converting the current flowing through the zener diode 152 into a voltage signal through the resistor;
the differential amplifier 154 is connected with the analog-to-digital converter 155, and amplifies the output of the detection resistor 153 by a fixed multiple;
The analog-to-digital converter 155 is connected with the implant processing module 170, and performs analog-to-digital conversion on the signal amplified by the differential amplifier and sends the signal to the implant processing module 170;
the analog load module 160 is connected to the rectifying circuit 151 and the load control circuit 173 in the implant processing module 170, and is composed of a plurality of resistors R L1～RLN and a switch K L1～KLN, and the implant processing module 170 controls the switch K L1～KLN to be closed and opened by digital signals of the load control circuit 173 according to the command transmitted from outside the body, so as to adjust the load of the wireless coupling module 140;
the implant processing module 170 includes a forward decoding circuit 171, an implant processing circuit 172, a load control circuit 173, a register 174, and a reverse output circuit 175, wherein,
The forward decoding circuit 171 is connected to the wireless coupling module 140 and the implant processing circuit 172, and demodulates and decodes the input of the wireless coupling module 140 and sends the demodulated and decoded input to the implant processing circuit 172;
The implant processing circuit 172 is connected to all other sub-modules of the implant processing module 170, and in the forward working mode, according to the output of the forward decoding circuit 171, a digital control signal is sent to control the load control circuit 173, and in the reverse working mode, the data stored in the register 174 is taken out and sent to the reverse output circuit 175;
the register 174 is connected to the analog-to-digital converter 155 and is used for storing the output of the analog-to-digital converter 155;
The reverse output circuit 175 is connected to the wireless coupling module 140, and is composed of a capacitor C5 and a switch K1, and the signal output by the implant processing circuit 172 turns on or off the switch K1, so as to change the resonance of the wireless coupling module 140 and enable the reverse signal to be emitted outside.
Further, the resistor R L1～RLN and the switch K L1～KLN in the analog load module 160 are connected in series and then connected in parallel to the rectifying circuit 151.
Further, the output voltage of the dc voltage conversion circuit 111 is controlled by the output of the feedback resistor adjusting array 112.
Further, the feedback resistor adjusting array 112 output is adjusted according to the current through the sensing resistor 153.
Further, the analog load module 160 output is controlled based on the output of the user data store.
Further, the analog-to-digital conversion circuit 155 has a measurement accuracy of 2 to 18 bits.
Further, the output range of the dc voltage conversion circuit 111 is 2 to 5 v.
Further, the resistance value of the detection resistor 153 ranges from 1 ohm to 100 ohm.
Fig. 4 is a waveform diagram of a power adjustment process of a specific application example of the circuit for automatically adjusting the output power of the wireless coupling transmission circuit according to the embodiment of the present invention. Curve 1 is the supply voltage signal VDD (scaled 1 volt/grid) for the class E amplifier 130. Curve 2 is the control signal VBT (scale 1 volt/grid) of implant processing circuit 172 controlling the inverted output circuit 175. Fig. 4 illustrates three phases of power adjustment, in which, in the first phase, the central control unit 120 sets the analog load according to the actual situation of the user, and the implant processing module 170 communicates with the central control unit 120 through the reverse output circuit 175 after receiving the instruction, informing that the setting is successful; in the second stage, the implant processing module 170 sends the data of the current detection module 150 to the central control module 120, the central control module 120 starts to reduce the voltage of the power supply voltage control module 110 according to the data, after 3 times of down-regulation, the central control module 120 finds that the current passing through the zener diode 152 is lower than the threshold value, and sends out a command to stop the operation of the current detection module 150; in the third stage, the central control module 120 adjusts the voltage of the power supply voltage control module 110 by a first gear to ensure that the current passing through the zener diode 152 is above the threshold value and ensure the stability and reliability of the system, which proves that the invention can successfully and automatically adjust the output power of the wireless coupling transmission circuit.
The circuit of the invention can automatically adjust the output power of the wireless coupling transmission circuit according to the actual situation of the user without affecting the user, reduces the overall power consumption of the system, and has the advantages of strong adaptability, digital control, easy integration, safety, reliability and the like.
Finally, it is noted that the above-mentioned preferred embodiments are only intended to illustrate rather than limit the invention, and that, although the invention has been described in detail by means of the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (6)
1. A circuit for automatically adjusting the output power of a wireless coupling transmission circuit, comprising at least: the device comprises a power supply voltage control module, a central control unit, an E-class amplifier, a wireless coupling module, a current detection module, an analog load module and an implant processing module, wherein,
The power supply voltage control module comprises a direct current voltage conversion circuit and a feedback resistance adjusting array, wherein,
The direct-current voltage conversion circuit provides power supply voltage for the class-E amplifier, and the voltage value is controlled by the feedback resistor adjusting array;
The feedback resistor adjusting array is controlled by a digital signal output by the central control unit and comprises a plurality of switches and resistors, and the output resistance is adjusted by opening and closing different switches;
the central control unit comprises a user data memory, a forward signal controller, a reverse signal decoder, a central computer and a feedback signal generator, wherein,
The user data memory is connected with the central computer and stores the actual debugging data of the user;
The forward signal controller is connected with the central computer and the class E amplifier, modulates the data information calculated by the central computer and then sends the data information to the class E amplifier;
The reverse signal decoder is connected with the central computer and the wireless coupling module, demodulates and decodes the implant induction signal transmitted by the wireless coupling module, and sends the signal to the central computer for further processing;
The central computer is connected with the user data memory, the forward signal controller, the reverse signal decoder and the feedback signal generator respectively, calculates the size of the implant analog load according to the data in the user data memory and sends out corresponding control signals through the forward signal controller; calculating the size of a feedback resistor according to the output signal of the reverse signal decoder; emitting by a feedback signal generator;
The feedback signal generator is connected with the central computer and the feedback resistor adjusting array and is used for controlling a switch in the feedback resistor adjusting array according to the calculation result of the central computer and adjusting the resistance value of the feedback resistor;
The E-type amplifier is connected with the wireless coupling module, amplifies the signal of the forward signal controller and transmits the signal into the implant through the wireless coupling module;
The wireless coupling module is connected with the E-type amplifier, the current detection module, the implant processing module and the reverse signal decoder and is used for transmitting signals and energy amplified by the E-type amplifier to the implant processing module and transmitting the digital measurement signals stored by the implant processing module into the reverse signal decoder outside the body in an electromagnetic induction mode;
the current detection module comprises a rectifying circuit, a voltage stabilizing diode, a detection resistor, a differential amplifier and an analog-to-digital converter, wherein,
The rectification circuit is connected with the wireless coupling module, and rectifies the output of the wireless coupling module and changes the output into a direct current signal;
the voltage stabilizing diode is connected with the detection resistor in series to form a branch circuit, and the branch circuit is connected with the rectifying circuit in parallel to stabilize the voltage of the rectifying circuit at a fixed value;
The two ends of the detection resistor are connected with the differential amplifier and are used for converting the current flowing through the zener diode into a voltage signal through the resistor;
the differential amplifier is connected with the analog-to-digital converter and amplifies the output of the detection resistor by a fixed multiple;
The analog-to-digital converter is connected with the implant processing module, and the signals amplified by the differential amplifier are subjected to analog-to-digital conversion and are sent to the implant processing module;
The implant processing module comprises a forward decoding circuit, an implant processing circuit, a load control circuit, a register and a reverse output circuit, wherein,
The forward decoding circuit is connected with the wireless coupling module and the implant processing circuit, demodulates and decodes the input of the wireless coupling module and sends the demodulated and decoded input to the implant processing circuit;
The implant processing circuit is connected with all other sub-modules of the implant processing module, and in a forward working mode, a digital control signal is sent to control the load control circuit according to the output of the forward decoding circuit, and in a reverse working mode, the data stored in the register is taken out and is sent to the reverse output circuit;
the register is connected with the analog-to-digital converter and used for storing the output of the analog-to-digital converter;
The reverse output circuit is connected with the wireless coupling module, and transmits signals output by the implant processing circuit to the outside of the body in a mode of changing resonance of the wireless coupling module;
The implant processing module is used for controlling the analog load module through a digital signal according to an external transmitted command and adjusting the load of the wireless coupling module;
the analog load module comprises a plurality of switches and a plurality of resistors, wherein one switch and one resistor are connected in series to form a group, and the groups are connected in parallel and then connected in parallel with the rectifying circuit;
the output voltage of the direct-current voltage conversion circuit is controlled by the output of the feedback resistor adjusting array.
2. The circuit for automatically adjusting output power of a wireless coupling transmission circuit of claim 1, wherein the feedback resistor adjustment array output is adjusted based on current through a sense resistor.
3. The circuit for automatically adjusting output power of a wireless coupled transmission circuit of claim 1, wherein the analog load module output is controlled based on an output of a user data store.
4. The circuit for automatically adjusting output power of a wireless coupling transmission circuit according to claim 1, wherein the analog-to-digital converter has a measurement accuracy of 2-18 bits.
5. The circuit for automatically adjusting output power of a wireless coupling transmission circuit according to claim 1, wherein the output range of the direct current voltage conversion circuit is 2-5 volts.
6. The circuit for automatically adjusting output power of a wireless coupling transmission circuit according to claim 1, wherein the resistance of the detection resistor ranges from 1 ohm to 100 ohm.
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| CN107049320A (en) * | 2017-01-18 | 2017-08-18 | 浙江诺尔康神经电子科技股份有限公司 | A kind of flap Thickness sensitivity circuit and system |
| CN108650000A (en) * | 2018-06-06 | 2018-10-12 | 浙江诺尔康神经电子科技股份有限公司 | The circuit and system of E class A amplifier A efficiency in a kind of automatic raising wireless transmission |
| CN208353339U (en) * | 2018-06-06 | 2019-01-08 | 浙江诺尔康神经电子科技股份有限公司 | The circuit of E class A amplifier A efficiency in a kind of automatic raising wireless transmission |
| CN211132711U (en) * | 2019-08-13 | 2020-07-31 | 浙江诺尔康神经电子科技股份有限公司 | Circuit for automatically adjusting output power of wireless coupling transmission circuit |
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