CN118868435B - Low-power-consumption charging method and device for nerve stimulator, storage medium and terminal - Google Patents
Low-power-consumption charging method and device for nerve stimulator, storage medium and terminal Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
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- A—HUMAN NECESSITIES
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- 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
- A61N1/36125—Details of circuitry or electric components
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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
- A61N1/372—Arrangements in connection with the implantation of stimulators
- A61N1/378—Electrical supply
- A61N1/3787—Electrical supply from an external energy source
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
- H02J7/00036—Charger exchanging data with battery
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention provides a low-power consumption charging method and device for a nerve stimulator, a storage medium and a terminal, wherein the method comprises the steps of adjusting the time of the nerve stimulator to be charged and the time of an external wireless charger to be in a synchronous state, acquiring working parameters of the nerve stimulator to be charged, acquiring a time sequence rule of alternately changing a pulse output state and an idle state when the nerve stimulator to be charged works based on the working parameters, and charging the nerve stimulator to be charged in a preset charging mode by using the external wireless charger according to the time sequence rule. According to the invention, the charging process is flexibly adjusted according to the working parameters of the nerve stimulator, so that the energy consumption of an external energy supply device can be obviously reduced, and the energy waste is avoided.
Description
Technical Field
The invention belongs to the technical field of nerve stimulators, relates to a low-power-consumption charging method of a nerve stimulator, and particularly relates to a low-power-consumption charging method and device of the nerve stimulator, a storage medium and a terminal.
Background
An implantable neurostimulator is a medical device for treating neurological disorders, and is generally composed of two parts, an external power supply and a stimulator, which is composed of a pulse generator and electrodes. The pulser is surgically implanted in the muscle or nerve tissue of a patient and is capable of electrically stimulating specific muscles or nerves in accordance with the patient's condition. Since the pulse generator needs to be implanted inside the human body, its volume must be as small as possible to reduce the risk of surgery and the burden on the patient's body. To achieve this goal, the prior art generally uses wireless power and wireless communication to simplify the energy storage and communication module inside the pulse generator and reduce the volume of the device.
Currently, power supply of an implantable neurostimulator mainly relies on an external energy supply device to wirelessly transmit energy. The external energy supply device continuously transmits wireless energy through the transmitting coil, and the nerve stimulator implanted in the human body receives the wireless energy through the coupling of the receiving coil, so that the power supply requirement of the equipment is met. However, the energy consumption of the neurostimulator is not constant, but fluctuates with the output of the electrical stimulation pulses and with the change in the working phase. For example, during the output of the electrical stimulation pulses, the energy consumption may increase dramatically, while in the idle state, the energy consumption may decrease significantly. However, the external power supply device continuously emits wireless energy, and the wireless power supply efficiency is low through human tissues, so that the external power supply device always consumes larger power, and the cruising ability of the external power supply device is reduced.
In order to solve the problem of energy waste, in the prior art, a battery and a battery management module matched with the battery are generally integrated in an implantable neural stimulator, an external wireless energy supply device only charges the battery constantly, and the charging power is a constant value, so that the energy waste is avoided. For example, patent CN108448741B proposes a self-adaptive constant-voltage high-efficiency wireless power supply system, where a receiving end of wireless power supply samples a voltage received by itself, and feeds back the voltage to a transmitting end through bluetooth, and the transmitting end adjusts a transmitting power according to the feedback value, so that the voltage of the receiving end is stable.
Thus, the prior art still has some significant drawbacks. Firstly, the scheme of integrating the battery can lighten the pressure of a wireless energy supply system, but the volume of an implanted part is increased, the operation risk is increased, and the battery is implanted into a human body to bring long-term use safety risk, secondly, the scheme of adjusting the power supply by adopting Bluetooth feedback has the problems of long feedback link, long response time, low adjusting speed and the like, so that the power supply effect is not ideal, thirdly, because the load requirement of the nerve stimulator continuously fluctuates along with the working state, the external energy supply device is difficult to adjust in an adapting way according to the change, the problem of wasting power consumption is serious, and the endurance of the external functional device is reduced.
Disclosure of Invention
The invention aims to provide a low-power consumption charging method and device for a nerve stimulator, a storage medium and a terminal, which are used for solving the technical problems that in the prior art, power consumption is wasted when the nerve stimulator is charged, and a charging mode is difficult to adjust in an adapting way.
In a first aspect, the present invention provides a low power consumption charging method of a neural stimulator, including:
adjusting the time of the neural stimulator to be charged and the time of the external wireless charger to a synchronous state;
acquiring working parameters of a neural stimulator to be charged, and acquiring a time sequence rule of alternately changing a pulse output state and an idle state when the neural stimulator to be charged works based on the working parameters;
according to the time sequence rule, charging the neural stimulator to be charged in a preset charging mode by using the external wireless charger;
The preset charging mode is that the emission output of the external wireless charger is started to supply power to the nerve stimulator to be charged before the nerve stimulator to be charged enters a pulse output state, and the emission output of the external wireless charger is closed after the nerve stimulator to be charged enters an idle state.
In an embodiment of the present invention, adjusting the time of the neural stimulator to be charged and the time of the external wireless charger to a synchronous state includes:
according to the carrier signal sent by the external wireless charger, adjusting the local clock of the neural stimulator to be charged to a reference clock corresponding to the carrier signal so as to obtain the neural stimulator to be charged after clock adjustment;
based on the synchronous code, aligning the working time of the neural stimulator to be charged after clock adjustment with the working time of the external wireless charger to obtain the neural stimulator to be charged after time synchronization;
The interaction mode of the synchronous code comprises that the synchronous code is sent by the neural stimulator to be charged after clock adjustment and received by the external wireless charger, or is sent by the external wireless charger and received by the neural stimulator to be charged after clock adjustment.
In an embodiment of the present invention, according to a carrier signal sent by the external wireless charger, adjusting the local clock of the neural stimulator to be charged to a reference clock corresponding to the carrier signal includes:
acquiring a carrier signal sent by the external wireless charger;
Detecting an edge variation of the carrier signal to obtain clock information corresponding to the edge variation;
And setting the local clock of the neural stimulator to be charged as a reference clock corresponding to the clock information, and taking the neural stimulator to be charged set as the reference clock as the neural stimulator to be charged after clock adjustment.
In one embodiment of the present invention, the power supply voltage required to be outputted from the external wireless charger to supply power to the neurostimulator to be charged is required to satisfy a predetermined condition,
The preset condition comprises that the energy which is received by the nerve stimulator to be charged and is output by the external wireless charger is larger than the sum of the consumed energy required by the pulse output state and the consumed energy required by the energy storage capacitor in the nerve stimulator to be charged.
In an embodiment of the present invention, obtaining, based on the operating parameter, a timing rule of alternately changing a pulse output state and an idle state when the neurostimulator to be charged is operated includes:
based on the pulse frequency, acquiring the duration of a single working period, wherein the single working period is a basic unit of alternation of a pulse output state and an idle state;
Based on the pulse width and the duty ratio, acquiring the duration of the pulse output state in a single working cycle as a single pulse duration;
based on the duration of the single working period and the single pulse duration, acquiring the duration of the idle state in the single working period as the single idle duration;
The duration of the single working period, the single pulse duration and the single idle duration are collected to be used as a time sequence rule of alternately changing the pulse output state and the idle state when the nerve stimulator to be charged works;
Wherein the operating parameters include the pulse frequency, the pulse width, and the duty cycle.
In an embodiment of the present invention, further includes:
acquiring full-electricity operable time of an energy storage capacitor in the nerve stimulator to be charged, judging the size relation between the full-electricity operable time and the single idle time, and intermittently starting emission output of the external wireless charger to supplement energy to the energy storage capacitor when the nerve stimulator to be charged is in an idle state if the full-electricity operable time is smaller than the single idle time.
In an embodiment of the present invention, the amount of time in advance of the output of the external wireless charger to enter the pulse output state is a preset amount of time in advance;
The preset advance time is the sum of preheating time consumption and relative time sequence deviation, wherein the preheating time consumption is time consumption required by the external functional device from starting to energy stabilization, and the relative time sequence deviation is the difference between the local time of the nerve stimulator to be charged and the local time of an external wireless charger corresponding to the local time of the nerve stimulator to be charged.
In a second aspect, the present invention also provides a low power consumption charging device of a neural stimulator, which is characterized by comprising:
The time synchronization module is used for adjusting the time of the neural stimulator to be charged and the time of the external wireless charger to a synchronous state;
The parameter analysis module is used for acquiring working parameters of the nerve stimulator to be charged, and analyzing the working parameters to acquire a time sequence rule of alternately changing a pulse output state and an idle state when the nerve stimulator to be charged works;
The intermittent charging module is used for charging the nerve stimulator to be charged in a preset charging mode by using the external wireless charger according to the time sequence rule;
The preset charging mode is that the emission output of the external wireless charger is started to supply power to the nerve stimulator to be charged before the nerve stimulator to be charged enters a pulse output state, and the emission output of the external wireless charger is closed after the nerve stimulator to be charged enters an idle state.
In a third aspect, the present invention also provides a storage medium having stored thereon a computer program which, when executed by a processor, implements a low power consumption charging method for a neurostimulator as described above.
In a fourth aspect, the invention also provides a terminal, which comprises a processor and a memory, wherein the memory is in communication connection with the processor;
The memory is used for storing a computer program, and the processor is used for executing the computer program stored by the memory, so that the terminal executes the low-power-consumption charging method of the nerve stimulator.
As described above, the low-power consumption charging method and device, the storage medium and the terminal of the neural stimulator have the following beneficial effects:
1. the time of the nerve stimulator to be charged and the time of the external wireless charger are adjusted to be in a synchronous state, so that the operation of the external wireless charger can be aligned with the time of the nerve stimulator to be charged, on the basis, the external wireless charger is controlled to charge by using a preset charging mode based on the time sequence rule of the nerve stimulator to be charged, and the charging method is flexibly adjusted based on the actual working parameters of the nerve stimulator to be charged, so that the adaptability to the nerve stimulators with different parameters is stronger.
2. According to the invention, the charging operation of the external wireless charger is matched with the working period of the nerve stimulator, so that the energy can be reasonably supplied in the pulse output state of the nerve stimulator to be charged, and the energy waste is reduced as much as possible in the idle state, thereby remarkably reducing the overall energy consumption of the external wireless charger in the process of charging the nerve stimulator to be charged.
3. The sum of the preheating time and the relative time sequence deviation is obtained as the preset advance time, so that the charging operation of the external wireless charger is more accurate, the synchronous precision of the charging operation of the external wireless charger and the working cycle of the nerve stimulator is higher, and the energy consumption is further reduced.
Drawings
Fig. 1 is a schematic flow chart of a low-power charging method of a neural stimulator according to an embodiment of the present invention.
Fig. 2 is a schematic flow chart of time synchronization in a low-power-consumption charging method of a neural stimulator according to an embodiment of the present invention.
Fig. 3 is a schematic flow chart illustrating a time sequence rule obtained based on working parameters in the low-power consumption charging method of the neural stimulator according to the embodiment of the invention.
Fig. 4 is a schematic diagram illustrating a preset charging mode in a low-power consumption charging method of a neural stimulator according to an embodiment of the present invention.
Fig. 5 is a schematic flow chart of a preset interaction mode in a low-power consumption charging method of a neural stimulator according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a low-power charging device of a neural stimulator according to an embodiment of the present invention.
Fig. 7 shows a schematic structural diagram of a terminal according to an embodiment of the present invention.
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict.
The principle and implementation of the low power consumption charging method and apparatus, the storage medium and the terminal of the neural stimulator of the present embodiment will be described in detail below, so that those skilled in the art can understand the low power consumption charging method and apparatus, the storage medium and the terminal of the neural stimulator of the present embodiment without creative effort.
In order to solve the technical problems in the prior art, the embodiment of the invention provides a low-power consumption charging method of a nerve stimulator.
Fig. 1 is a flow chart illustrating a low power consumption charging method of a neural stimulator according to an embodiment of the present invention, and referring to fig. 1, the low power consumption charging method of the neural stimulator according to the embodiment of the present invention mainly includes the following steps:
Step S100, the time of the neural stimulator to be charged and the time of the external wireless charger are adjusted to be in a synchronous state.
Specifically, the time of the neurostimulator to be charged and the time of the external wireless charger are adjusted to be in a synchronous state, wherein the synchronous state refers to the fact that the time speed of the neurostimulator to be charged and the time speed of the external wireless charger are the same and the current time of the neurostimulator to be charged and the current time of the external wireless charger are the same. After the time of the two is adjusted to be in a synchronous state, the external wireless charger end can be ensured to accurately match the corresponding charging strategy based on the working state rule of the nerve stimulator to be charged, and a time foundation is laid for the steps S200 and S300.
Optionally, fig. 2 is a schematic flow chart of time synchronization in the low-power consumption charging method of the neural stimulator according to the embodiment of the present invention, and referring to fig. 2, adjusting the time of the neural stimulator to be charged and the time of the external wireless charger to a synchronous state includes:
step S101, according to a carrier signal sent by an external wireless charger, adjusting a local clock of the nerve stimulator to be charged to a reference clock corresponding to the carrier signal so as to obtain the nerve stimulator to be charged after clock adjustment.
The reference clock is a core part for controlling the working time sequence of the equipment, the external wireless charger and the to-be-charged neural stimulator work respectively depend on respective clock signals, and the synchronization of the reference clock can ensure that the external wireless charger and the to-be-charged neural stimulator are coordinated and consistent in the running process, so that time deviation does not occur. Specifically, the reference clock of the neurostimulator to be charged in this embodiment is not generated independently, but is obtained by recovering the carrier signal transmitted by the external wireless charger. The external wireless charger sends a high-frequency carrier signal to the nerve stimulator to be charged through the transmitting coil. This carrier is not only used for energy transmission, but may also carry clock information. The high-frequency carrier signal is a sine wave or square wave signal with fixed frequency and has strong time sequence characteristics. The carrier signal is processed, so that clock information of the external wireless charger can be extracted, and the local clock of the nerve stimulator to be charged is set based on the clock information, so that the aim of synchronizing the external wireless charger and the reference clock of the nerve stimulator to be charged can be fulfilled. It should be noted that, in this embodiment, the neural stimulator to be charged is an implantable neural stimulator.
In one embodiment, the step S101 of adjusting the local clock of the neurostimulator to be charged to a reference clock corresponding to the carrier signal according to the carrier signal sent by the external wireless charger includes obtaining the carrier signal sent by the external wireless charger, detecting an edge change of the carrier signal to obtain clock information corresponding to the edge change, and setting the local clock of the neurostimulator to be charged to the reference clock corresponding to the clock information, wherein the neurostimulator to be charged set to the reference clock is used as the neurostimulator to be charged after clock adjustment. Specifically, the carrier signal is used as a main energy transmission medium of the external wireless charger and also carries clock information of the external wireless charger, the clock period of the external wireless charger can be reflected by the edge change of the carrier, the clock information in the signal is extracted by detecting the edge (rising edge or falling edge) of the carrier signal, and the local clock of the neural stimulator to be charged is adjusted to be synchronous with the clock information in the signal, so that the clock information is consistent with the reference clock of the external wireless charger, and the time update speed of the clock information and the clock update speed of the clock information are the same.
Step S102, based on the synchronous code, the working time of the neural stimulator to be charged after the clock adjustment is aligned with the working time of the external wireless charger, so as to obtain the neural stimulator to be charged after the time synchronization.
Specifically, after clock synchronization is completed, the current working time of the external wireless charger and the neural stimulator to be charged is further aligned through interaction of the synchronization codes, so that in actual operation, the time of the neural stimulator to be charged can be aligned through operation of the external wireless charger based on a time sequence rule. The interaction mode of the synchronous code comprises that the synchronous code is sent by the neural stimulator to be charged after clock adjustment and received by an external wireless charger or is sent by the external wireless charger and received by the neural stimulator to be charged after clock adjustment. The synchronous code can be realized by modulating a transmitting waveform by an external wireless charger or by reversely modulating the neural stimulator to be charged, wherein the external wireless charger can modulate the synchronous code on a carrier wave while transmitting wireless energy, the neural stimulator to be charged acquires information of the synchronous code by demodulating the signals, and the neural stimulator to be charged actively transmits the synchronous code information to provide real-time feedback to the external wireless charger, so that the external wireless charger can make accurate time synchronization adjustment according to the synchronous code of the neural stimulator to be charged.
Step 200, acquiring working parameters of the neural stimulator to be charged, and acquiring a time sequence rule of alternately changing a pulse output state and an idle state when the neural stimulator to be charged works based on the working parameters.
Specifically, the working parameters of the neural stimulator to be charged determine the time sequence rule of alternately switching the pulse output state and the idle state, and the time sequence rule of alternately switching the pulse output state and the idle state when the neural stimulator to be charged works can be obtained by analyzing the working parameters of the neural stimulator to be charged.
Optionally, fig. 3 is a schematic flow chart showing a timing rule obtained based on working parameters in the low-power consumption charging method of the neural stimulator according to the embodiment of the present invention, and referring to fig. 3, the timing rule for obtaining the alternate switching between the pulse output state and the idle state when the neural stimulator to be charged works based on the working parameters includes the following steps:
Step S201, based on the pulse frequency, acquiring the duration of a single working period, wherein the single working period is a basic unit of alternation of a pulse output state and an idle state.
Specifically, the operating parameters are pulse parameters, including pulse frequency, pulse width, and duty cycle, the pulse frequency representing the number of times the neurostimulator outputs electrical stimulation pulses per unit time, typically in hertz (Hz). For example, a pulse frequency of 50Hz means that 50 pulses are output per second, and a pulse width means the duration of each electrical stimulation pulse, typically in microseconds (μs) or milliseconds (ms). The larger the pulse width, the longer the pulse output state lasts, and the duty cycle refers to the proportion of the pulse output state to the whole working period. It is typically expressed in percent, for example, if the pulse output state lasts 1ms for one period and the entire period is 20ms, then the duty cycle is 5%.
The working state of the nerve stimulator to be charged is alternately performed by a pulse output state and an idle state, namely, the pulse output state, the idle state, the pulse output state and the idle state are continuously and reciprocally circulated. Wherein, each pulse output state and idle state form a single working period. The duration of a single working period can be calculated according to the pulse frequency, and the quotient obtained by dividing 1 by the pulse frequency is the duration of the single working period. For example, at a pulse frequency of 50Hz, the duration of a single duty cycle is 20ms.
Step S202, based on the pulse width and the duty ratio, the duration of the pulse output state in a single working period is obtained as a single pulse duration.
Specifically, from the pulse width and the duty cycle, the time for which the pulse output state is sustained in a single operation period can be calculated, with the single pulse duration being equal to twice the pulse width, since the pulse output of the neurostimulator to be charged is a bipolar output signal. For example, at a pulse width of 100 μs, the pulse output state has a duration of 200 μs in a single duty cycle.
Step S203, based on the duration of the single working period and the duration of the single pulse, acquiring the duration of the idle state in the single working period as the single idle duration.
Specifically, the duration of the idle state in the single working period is taken as a single idle duration, and the single idle duration is equal to the duration of the single working period minus the single pulse duration. For example, if the single duty cycle is 20ms and the single pulse duration is 200 μs, then the single idle duration is 19.8ms.
Step S204, collecting the duration of a single working period, the duration of a single pulse and the duration of a single idle period as a time sequence rule of alternately changing the pulse output state and the idle state when the nerve stimulator to be charged works.
The alternating conversion of the pulse output state and the idle state is modeled as a time sequence model, the time sequence model can describe the switching time of the pulse output state and the idle state in each period, and the time sequence rule of the alternating conversion of the pulse output state and the idle state when the nerve stimulator to be charged works can be accurately described based on the duration of a single working period, the duration of a single pulse and the duration of a single idle period.
And step 300, according to a time sequence rule, charging the nerve stimulator to be charged in a preset charging mode by using an external wireless charger.
Fig. 4 is a schematic diagram showing a preset charging mode in the low-power consumption charging method of the neurostimulator according to the embodiment of the invention, and referring to fig. 4, the preset charging mode is that the emission output of the external wireless charger is turned on to supply power to the neurostimulator to be charged each time before the neurostimulator to be charged enters a pulse output state, and the emission output of the external wireless charger is turned off each time after the neurostimulator to be charged enters an idle state. The idle state refers to a standby time after the pulse output is finished, at this time, the energy consumption of the neural stimulator is very low, and the energy storage capacitor can generally maintain the operation of the system. The time sequence rule accurately describes the condition that the pulse output state and the idle state are alternately changed when the nerve stimulator to be charged works, and the time of the external wireless charger and the time of the nerve stimulator to be charged are in a synchronous state, so that the charging change performed by the external wireless charger can accurately correspond to the time of the nerve stimulator to be charged, and the external wireless charger can accurately know the time sequence rule of the nerve stimulator to be charged when the nerve stimulator to be charged starts to work. The external wireless charger starts the emission output before the neural stimulator to be charged enters the pulse output state, and stops the power supply after the neural stimulator to be charged enters the idle state. Therefore, the preset charging mode enables the charging operation of the external wireless charger to be matched with the working period of the nerve stimulator, so that energy can be reasonably supplied in the pulse output state of the nerve stimulator to be charged, and the energy waste is reduced as much as possible in the idle state, so that the overall energy consumption of the external wireless charger in the process of charging the nerve stimulator to be charged is obviously reduced.
Optionally, the power supply voltage of the emission output of the external wireless charger for supplying power to the nerve stimulator to be charged needs to meet preset conditions, wherein the preset conditions include that the energy of the emission output of the external wireless charger received by the nerve stimulator to be charged is larger than the sum of the energy consumption required by the pulse output state and the energy consumption required by the charging of the energy storage capacitor in the nerve stimulator to be charged. The energy emitted and output by the external wireless charger can cover the pulse output energy consumption of the nerve stimulator to be charged and the energy consumption of charging the energy storage capacitor in the nerve stimulator to be charged at the same time, and the energy emitted and output by the external wireless charger supports the pulse output of the nerve stimulator to be charged and charges the energy storage capacitor. However, energy is emitted and output from the external wireless charger until the energy is received by the nerve stimulator to be charged, and there is usually energy loss in the middle, and according to the actual situation, the energy loss is related to the transmission efficiency, and a person skilled in the art can correspondingly adjust the power supply voltage of the emitted and output of the external wireless charger according to the actual energy loss situation so as to enable the power supply voltage to meet the preset condition.
Optionally, the low-power consumption charging method of the neural stimulator further comprises the steps of obtaining full-electricity operable time of the energy storage capacitor in the neural stimulator to be charged, judging that the size relation between the full-electricity operable time and the single idle time is smaller than the single idle time, and intermittently starting emission output of an external wireless charger to supplement energy to the energy storage capacitor when the neural stimulator to be charged is in the idle state. Specifically, the full-charge operable time of the energy storage capacitor refers to a time that the energy storage capacitor can maintain the normal operation of the neurostimulator to be charged when the energy storage capacitor is fully charged. The energy storage capacitor discharges in the idle state of the nerve stimulator to be charged, and the discharged current is the standby working current of the nerve stimulator to be charged. The full charge on-time is equal to the quotient of the full charge available divided by the standby on-current. The full-electricity available charge quantity is the product of the capacitance value of the energy storage capacitor and the available voltage value, the available voltage value is the difference value of the full-electricity voltage of the energy storage capacitor minus the reserved voltage, and the reserved voltage is the sum of the shutdown critical voltage and the preset safety margin voltage. The shutdown threshold voltage is the shutdown threshold power supply voltage of the nerve stimulator to be charged, namely, the nerve stimulator to be charged is automatically shut down when the power supply voltage of the nerve stimulator to be charged is lower than the shutdown threshold voltage, and the preset safety margin voltage is a preset safety range from the shutdown threshold voltage so as to better protect the nerve stimulator to be charged. For example, the full-charge voltage of the energy storage capacitor is 5V, the shutdown critical voltage is 3V, the preset safety margin voltage is 1V, the standby working current is 0.5mA, and the capacitance value of the energy storage capacitor is 10uF. Then the amount of charge available for full charge is 10uF (5V-1V) for a full charge operational period, i.e. 10uC, corresponding to an operational time of 10uC/0.5mA, i.e. 20ms.
Specifically, the full-power operable time of the energy storage capacitor is compared with the single idle time to determine whether the energy storage capacitor can support the energy demand in the whole idle state, and if the full-power operable time is greater than the single idle time, the energy storage capacitor can support the energy demand in the whole idle state, and at this time, an external wireless charger is not required to be used for charging in the idle state. If the full-power operable time is less than the single idle time, the energy storage capacitor cannot support the whole idle time, and energy supplement is required in an idle state to ensure the normal operation of the nerve stimulator. In the embodiment, the intermittent charging mode is used to save the energy consumption of the external wireless charger, and in the idle state, the external wireless charger is started for a preset time period every time a preset interval time passes, so that the voltage of the energy storage capacitor is supplemented while the energy consumption of the nerve stimulator to be charged is supplied in the preset time period, the intermittent charging can effectively avoid the risk that the energy storage capacitor consumes the electricity in the idle period, and the nerve stimulator is ensured to still keep running stably before the next pulse output. Preferably, the preset interval time is equal to the full-power operable time, and the preset time is time consumption required by full-power charging of the energy storage capacitor, so that the energy consumption of the external wireless charger can be reduced to the greatest extent.
Optionally, after the neurostimulator to be charged enters the idle state, the time for closing the emission output of the external wireless charger has a preset delay amount compared with the time for the neurostimulator to be charged to enter the idle state, and the setting of the preset delay amount needs to satisfy that the electric quantity of the energy storage capacitor in the neurostimulator to be charged is full. That is, if the single pulse time length is greater than or equal to the time required by full charge of the energy storage capacitor, the preset delay amount is 0, and if the single pulse time length is less than the time required by full charge of the energy storage capacitor, the preset delay amount is the difference value obtained by subtracting the time required by full charge of the energy storage capacitor from the time required by full charge of the single pulse. The time required for the storage capacitor to fully charge is a fixed parameter value of the neural stimulator to be charged.
Optionally, the amount of time in advance of starting the emission output of the external wireless charger to enter the pulse output state is set to be a preset amount of time in advance compared with the amount of time in advance of starting the emission output of the neural stimulator to be charged to enter the pulse output state, that is, the amount of time in advance of starting the emission output of the external wireless charger to enter the pulse output state is set to be a preset amount of time in advance. The preset advance time is the sum of preheating time consumption and relative time sequence deviation, wherein the preheating time consumption is time consumption required by the external functional device from starting to energy stabilization, and the relative time sequence deviation is the difference between the local time of the nerve stimulator to be charged and the local time of an external wireless charger corresponding to the local time of the nerve stimulator to be charged.
The external wireless charger is different from the external wireless charger to be charged in the relative position, the impedance of the external wireless charger reflected by the external wireless charger to be charged is different, so that the load of a transmitting circuit of the external wireless charger is different, and the stable time (namely, the preheating time consumption) of the transmitting energy is different for different loads, specifically, the preheating time consumption in the embodiment is as follows:
Specifically, the value of the reflected impedance can be obtained by sampling and calculating the transmitted current of an external wireless charger, the transmitted current can be sampled to obtain a normal current I coil when the external wireless charger is not close to a neural stimulator to be charged, the transmitted current can be sampled to obtain a power supply current I out when the external wireless charger is close to the stimulator for supplying power, and the reflected impedance R rect is obtained based on the following formula:
Therefore, the embodiment considers the variation situations of parameters such as capacitive load, reflection impedance and the like, and accurately calculates the preheating time of the external wireless charger.
The relative timing deviation is obtained by the following steps:
Performing first-round encoding by using a preset interaction mode, and obtaining corresponding first-round B-end starting encoding time, first-round A-end starting encoding time and first-round B-end decoding completion time;
Performing second-round encoding by using a preset interaction mode, and obtaining corresponding second-round B-end starting encoding time and second-round B-end decoding completion time;
the terminal B is a nerve stimulator to be charged, and the terminal A is an external wireless charger. The content of the A-end code in the first round of code is equal to the content of the A-end code in the second round of code, and the content of the B-end code in the second round of code is a preset multiple of the content of the B-end code in the first round of code.
Fig. 5 is a schematic flow chart of a preset interaction mode in a low-power consumption charging method of a neural stimulator according to an embodiment of the present invention. Referring to fig. 5, the preset interaction method includes:
b end start coding and recording corresponding B end start coding time;
obtaining a B-end coding result after the B-end coding is completed;
b, sending the B-end coding result to an A-end;
The A end decodes the B end coding result;
After the end A finishes decoding, starting encoding and recording corresponding time for starting encoding of the end A;
Obtaining an A-end coding result after the A-end coding is completed;
The A end sends the encoding result of the A end to the B end;
b end decodes the result of encoding A end;
after the B end finishes decoding, the corresponding time for the B end to finish decoding is recorded.
The relative timing offset is:
Tx= TB0- {TA1-[(TB1’-TB01’)-(TB1-TB0)]/(n-1)}
Wherein Tx represents a relative timing error, TB0 represents a first-round B-end start-up encoding time, TB1 represents a first-round B-end finish decoding time, TB0 'represents a second-round B-end start-up encoding time, TB1' represents a second-round B-end finish decoding time, TA1 represents a first-round a-end start-up encoding time, and n is a preset multiple.
Specifically, the embodiment of the invention obtains the relative time sequence deviation through two-way communication of two rounds. Referring to fig. 5, it is shown:
first round:
at time t0, starting the encoding by the B end, and recording the current B end local moment TB0 as the first round of B end starting encoding time;
At t1, the B end finishes encoding to obtain a B end encoding result, and starts to transmit the B end encoding result to the A end;
at t2, the waveform containing the B-end encoding result reaches the A-end, and the A-end starts to decode the B-end encoding result;
at t3, the end A completes decoding, and simultaneously starts encoding and records the current local time TA1 of the end A;
at t4, the end A finishes encoding to obtain an end A encoding result, and starts to transmit the end A encoding result to the end B;
At t5, the waveform containing the encoding result of the A end reaches the B end, and the B end starts decoding;
At t6, the B end completes decoding to obtain a B end decoding result, and the local current moment TB1 of the B end is recorded;
the time required by B-end encoding is recorded as Tb encoding, the time required by B-end decoding is recorded as Tb decoding, the time required by A-end encoding is recorded as Ta encoding, the time required by T3-T2 is recorded as Ta decoding, the time required by A-end decoding is recorded as T2-T1, the time required by A-B-end waveform transmission is recorded as T transmission, and the time required by T2-T1 is equal to T5-T4. Then there is:
tb1-tb0=tb coding+Ttransmission+Ta decoding+ta encoding+ T transport+Tb decoding
TA0 represents the local time of the A terminal at the same time corresponding to the B terminal local time TB0, and necessarily satisfies:
Ta0=ta1- (TA decoding+t transmission+tb encoding)
Since the wireless power supply of the neurostimulator is near field power supply (typically <5 cm), and the wireless waveform transmission approximates the speed of light, the T transmission is negligible, so there is:
Ta0=ta1- (TA decoding+tb encoding)
A second wheel:
The complete process is repeated again while keeping the other conditions unchanged, but with the difference that the encoded content of the B-side of the second round is n times the encoded content of the first round (e.g. 100 bits of the encoded content of the first round, then n x 100 bits of the encoded content of the second round), while the encoded content of the a-side is unchanged.
The time Tb encoding 'required for the second round of B-side encoding and Ta decoding' required for a-side decoding therefore satisfy:
Tb code' =n Tb code
Ta decoding' =n Ta decoding
TB0 'represents the second round of B-side start-up encoding time, TB1' represents the second round of B-side finish decoding time, and TB0 'and TB1' satisfy:
TB1' -TBO ' =tb encoded ' +t transmission+ta decoded+ta encoded+t transmission+tb decoded
[ TB1'-TBO' ] [ TB1-TBO ] = (n-1) (Ta decoding+Tb encoding)
Then there is:
Ta decoding+tb encoding= [ (Tb 1'-Tb 01') - (Tb 1-Tb 0) ]/(n-1)
TA0=TA1-[(TB1’-TB01’)-(TB1-TB0)]/(n-1)
In the first round, TB0 is the local time of the neurostimulator to be charged, TA0 is the local time of the external wireless charger corresponding to the local time of the neurostimulator to be charged, and then the relative timing deviation Tx is the difference obtained by subtracting TA1 from TA 0. The relative timing offset is a fixed value, and thus Tx is also used in other interactions. In the prior art, due to the delay of encoding, modulating, transmitting and decoding of the synchronous code, the external wireless charger and the nerve stimulator to be charged still have fixed time sequence deviation.
According to the preheating time and the relative time sequence deviation, corresponding preset advance time is set at the external wireless charger end, so that the time for starting the emission output of the external wireless charger to supply power to the nerve stimulator to be charged can be more accurately matched with the pulse output state of the nerve stimulator to be charged, the energy waste caused by early or late starting is avoided, and the unnecessary energy loss in the power supply process is obviously reduced.
The protection scope of the low-power consumption charging method of the neural stimulator of the embodiment of the invention is not limited to the execution sequence of the steps listed in the embodiment, and all the schemes of step increase and decrease and step replacement in the prior art according to the principles of the invention are included in the protection scope of the invention.
According to the low-power-consumption charging method for the nerve stimulator, disclosed by the embodiment of the invention, the time of the nerve stimulator to be charged and the time of the external wireless charger are adjusted to be in a synchronous state, so that the operation of the external wireless charger can be aligned with the time of the nerve stimulator to be charged, the charging operation of the external wireless charger is matched with the time sequence rule of the nerve stimulator on the basis, and the whole energy consumption can be reduced on the premise that the energy supply of the nerve stimulator to be charged is ensured. Meanwhile, based on the preset advance time, the emission output of the external wireless charger is started in advance, the synchronous precision of the charging operation of the external wireless charger and the working period of the nerve stimulator is higher, and the energy consumption is further reduced.
In order to solve the technical problems in the prior art, the embodiment of the invention also provides a low-power consumption charging device of the nerve stimulator.
Fig. 6 is a schematic structural diagram of a low power consumption charging device of a neural stimulator according to an embodiment of the present invention, and referring to fig. 6, the low power consumption charging device of the neural stimulator according to an embodiment of the present invention includes a time synchronization module, a parameter analysis module, and an intermittent charging module.
The time synchronization module is used for adjusting the time of the neural stimulator to be charged and the time of the external wireless charger to a synchronous state;
The parameter analysis module is used for acquiring working parameters of the nerve stimulator to be charged, and analyzing the working parameters to acquire a time sequence rule of alternately changing a pulse output state and an idle state when the nerve stimulator to be charged works;
The intermittent charging module is used for charging the nerve stimulator to be charged in a preset charging mode by using an external wireless charger according to a time sequence rule;
The preset charging mode is that the emission output of the external wireless charger is started to supply power to the nerve stimulator to be charged before the nerve stimulator to be charged enters a pulse output state, and the emission output of the external wireless charger is closed after the nerve stimulator to be charged enters an idle state.
According to the low-power-consumption charging device of the nerve stimulator, the time of the nerve stimulator to be charged and the time of the external wireless charger are adjusted to be in a synchronous state, so that the operation of the external wireless charger can be aligned with the time of the nerve stimulator to be charged, the charging operation of the external wireless charger is matched with the time sequence rule of the nerve stimulator on the basis, and the whole energy consumption can be reduced on the premise that the nerve stimulator to be charged is supplied with energy. Meanwhile, based on the preset advance time, the emission output of the external wireless charger is started in advance, the synchronous precision of the charging operation of the external wireless charger and the working period of the nerve stimulator is higher, and the energy consumption is further reduced.
In order to solve the above technical problems in the prior art, an embodiment of the present invention further provides a storage medium having a computer program stored thereon, wherein the program when executed by a processor implements all the steps of the low power consumption charging method of the neural stimulator of the embodiment.
The specific steps of the low-power consumption charging method of the neural stimulator and the beneficial effects obtained by applying the readable storage medium provided by the embodiment of the invention are the same as those of the above embodiment, and are not repeated here.
Those of ordinary skill in the art will appreciate that all or part of the steps in a method implementing the above embodiments may be implemented by a program to instruct a processor, where the program may be stored in a computer readable storage medium, where the storage medium is a non-transitory (non-transitory) medium, such as a random access memory, a read only memory, a flash memory, a hard disk, a solid state disk, a magnetic tape (MAGNETIC TAPE), a floppy disk (floppy disk), a compact disk (optical disk), and any combination thereof. The storage media may be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a digital video disc (digital video disc, DVD)), or a semiconductor medium (e.g., a Solid State Drive (SSD)), or the like.
In order to solve the technical problems in the prior art, the embodiment of the invention further provides a terminal. Fig. 7 is a schematic structural diagram of a terminal according to an embodiment of the present invention, and referring to fig. 7, the terminal according to an embodiment of the present invention includes a processor and a memory, where the memory is in communication connection with the processor, and the memory is used for storing a computer program, and the processor is used for executing the computer program stored in the memory, so that the terminal performs all the steps of the low power consumption charging method of the neural stimulator according to the above embodiment.
The specific steps of the low-power consumption charging method of the neural stimulator and the beneficial effects obtained by the terminal provided by the embodiment of the invention are the same as those of the above embodiment, and are not repeated here.
It should be noted that the memory may include a random access memory (Random Access Memory, abbreviated as RAM) and may further include a non-volatile memory (non-volatile memory), such as at least one disk memory. The same processor may be a general purpose processor, including a central processing unit (Central Processing Unit, CPU), a network processor (Network Processor, NP), etc., or a digital signal processor (Digital SignalProcessing, DSP), application SPECIFIC INTEGRATED Circuit (ASIC), field programmable gate array (Field Programmable GATE ARRAY, FPGA), or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component.
Although the embodiments of the present invention are disclosed above, the embodiments are only used for the convenience of understanding the present invention, and are not intended to limit the present invention. Any person skilled in the art can make any modification and variation in form and detail without departing from the spirit and scope of the present disclosure, but the scope of the present disclosure is still subject to the scope of the present disclosure as defined by the appended claims.
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| CN104539014A (en) * | 2014-12-29 | 2015-04-22 | 深圳市航盛电子股份有限公司 | Novel wireless charger and method for lowering wireless charging stand-by power consumption of novel wireless charger |
| CN105641808A (en) * | 2015-12-31 | 2016-06-08 | 苏州景昱医疗器械有限公司 | Wireless charger capable of carrying out program control while charging and implantable nerve stimulator |
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| CN107086617B (en) * | 2017-03-21 | 2021-06-22 | 广东小天才科技有限公司 | A kind of intelligent charging device and intelligent charging method |
| CN112473005A (en) * | 2020-11-17 | 2021-03-12 | 北京品驰医疗设备有限公司 | Implanted nerve stimulator |
| CN113629832B (en) * | 2021-10-12 | 2021-12-24 | 景昱医疗器械(长沙)有限公司 | Charging control method of external charger and related device |
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| CN104539014A (en) * | 2014-12-29 | 2015-04-22 | 深圳市航盛电子股份有限公司 | Novel wireless charger and method for lowering wireless charging stand-by power consumption of novel wireless charger |
| CN105641808A (en) * | 2015-12-31 | 2016-06-08 | 苏州景昱医疗器械有限公司 | Wireless charger capable of carrying out program control while charging and implantable nerve stimulator |
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