A car sickness prevention watch system based on targeted neuromodulation

Abstract

This invention relates to the field of smart wearable device technology, specifically to an anti-motion sickness watch system based on targeted neural modulation, comprising: a first-stage boost module, used by the main control chip to output a PWM square wave, driving a transistor to frequently switch, thereby driving an LC circuit to continuously charge, achieving first-stage boost; a coupling module, used to connect the first-stage boost to the first and second input terminals of a transformer, and simultaneously, based on the PWM signal of the first-stage boost module, the main control chip controls the output of two other I / O ports to control the conduction and cutoff of the first and second output terminals of the transformer, generating a weakly modulated waveform through electromagnetic coupling synthesis via the transformer; and a second-stage boost module, used to boost the weakly modulated waveform through the transformer to generate a high-voltage sine wave pulse sequence including a periodic high-voltage maintenance phase, achieving second-stage boost. This invention can achieve precise synthesis of composite waveforms through multi-level data processing and collaborative control.

Description

Technical Field

[0001] This invention relates to the field of smart wearable device technology, and more specifically, to an anti-motion sickness watch system based on targeted neural modulation. Background Technology

[0002] Motion sickness is a physiological reaction caused by conflicting sensory input signals. With the development of portable electronic technology, using electrical stimulation for neuromodulation to alleviate motion sickness symptoms has become a research hotspot. Currently, most anti-motion sickness devices on the market work by stimulating acupoints with electrical pulses, but their signal processing methods sometimes have the following technical defects: For example, most existing signal processing technologies use an open-loop control structure. After the device starts up, the main control chip outputs a fixed waveform according to preset parameters. Some lack a real-time data acquisition and processing mechanism for changes in electrode-skin interface impedance during stimulation. When the load characteristics change due to electrode contact status, skin humidity, or individual differences, the system cannot dynamically calibrate output parameters (such as PWM duty cycle and switching timing) due to the lack of a data feedback channel. This deficiency means that the output waveform quality will drift due to load changes, and the actual stimulation parameters acting on the nerve will deviate from the preset parameters, and this deviation cannot be detected and corrected by the system.

[0003] For example, existing technologies typically employ simple superposition or time-division multiplexing methods when processing multiple signals, failing to achieve multi-parameter fusion modulation based on the principle of electromagnetic coupling. Specifically, the lack of algorithm-level collaborative design between the PWM signal generated by the first-stage boost converter and the second-stage switching control signal results in the two signals failing to achieve optimal electromagnetic conversion efficiency when coupled through the transformer. This separate signal generation strategy fails to fully utilize the electromagnetic characteristics of the transformer and cannot maximize energy transfer efficiency and precisely control waveform shape through algorithm optimization. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an anti-motion sickness watch system based on targeted neural modulation, which can achieve accurate synthesis of composite waveforms through multi-level data processing and collaborative control.

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows: A motion sickness prevention watch system based on targeted neural modulation includes: The power module is used by the main control chip to turn on the power switch through the IO port to supply power to the entire anti-motion sickness control circuit. The first-stage boost module is used by the main control chip to output a PWM square wave, which drives the transistor to switch frequently, thereby driving the LC circuit to charge continuously, thus realizing the first-stage boost. The coupling module is used to connect the first-stage boost transformer to the first and second input terminals of the transformer. Based on the PWM signal of the first-stage boost transformer, the main control chip controls the output of the other two IO ports respectively to realize the conduction and cutoff of the first and second output terminals of the transformer. The transformer performs electromagnetic coupling synthesis to generate a weakly modulated waveform. The second-stage boost module is used to boost the weakly modulated waveform through a transformer to generate a high-voltage sine wave pulse sequence that includes a periodic high-voltage maintenance phase, thereby achieving the second-stage boost.

[0006] Secondly, a control method for an anti-motion sickness watch system based on targeted neural modulation includes the following steps: The main control chip turns on the power switch through the I / O port to supply power to the entire motion sickness control circuit. The main control chip outputs a PWM square wave, which drives the transistor to switch frequently, thereby driving the LC circuit to continuously charge and achieve the first stage of boost. The first-stage boost converter is connected to the first and second input terminals of the transformer. Simultaneously, based on the PWM signal of the first-stage boost module, the main control chip controls the output of the other two IO ports to realize the conduction and cutoff of the first and second output terminals of the transformer. The transformer performs electromagnetic coupling synthesis to generate a weakly modulated waveform. The weakly modulated waveform is boosted by a transformer to generate a high-voltage sine wave pulse sequence that includes a periodic high-voltage maintenance phase, thus achieving the second-stage boost.

[0007] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: By monitoring parameters such as changes in electrode-skin interface impedance and load characteristic fluctuations in real time, feedback data can be collected and the PWM duty cycle and switching timing output by the main control chip can be dynamically adjusted. This data processing method overcomes the output waveform quality drift defect caused by the lack of feedback channels in the existing technology, ensuring that the actual stimulation parameters acting on the nerve are consistent with the preset parameters, and improving the system's environmental adaptability and output stability.

[0008] By accurately calculating and jointly optimizing the phase relationship, timing window, and energy ratio of the two signals, the electromagnetic coupling characteristics of the transformer are fully utilized, and the energy transmission efficiency is maximized. This multi-parameter fusion data processing method overcomes the defect of low electromagnetic conversion efficiency caused by the separate signal generation strategy, and can accurately control the shape of the output waveform to generate a high-voltage sine wave pulse sequence with specific timing characteristics. Attached Figure Description

[0009] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. Some specific embodiments of this application will be described in detail below with reference to the accompanying drawings in an exemplary and non-limiting manner. The same reference numerals in the drawings designate the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings: Figure 1 This is a schematic diagram of the motion sickness prevention watch system based on targeted neural modulation of the present invention.

[0010] Figure 2 This is a schematic diagram of the control method of the motion sickness prevention watch system based on targeted neural modulation of the present invention. Detailed Implementation

[0011] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of the present application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative effort should fall within the scope of protection of the present application.

[0012] The following embodiments of this application use a motion sickness prevention watch system based on targeted neural modulation as an example to illustrate the solution of this application in detail. However, this embodiment does not limit the scope of protection of this application.

[0013] like Figure 1 As shown, this invention provides an anti-motion sickness watch system based on targeted neural modulation, comprising: Power module 11 is used by the main control chip to turn on the power supply switch through the IO port to supply power to the entire anti-motion sickness control circuit; The first-stage boost module 12 is used by the main control chip to output a PWM square wave, which drives the transistor to switch frequently, thereby driving the LC circuit to charge continuously, thus realizing the first-stage boost. The coupling module 13 is used to connect the first-stage boost to the first and second input terminals of the transformer. Simultaneously, based on the PWM signal of the first-stage boost module, the main control chip controls the output of the other two IO ports respectively to realize the conduction and cut-off of the first and second output terminals of the transformer. The transformer performs electromagnetic coupling synthesis to generate a weakly modulated waveform. The second-stage boost module 14 is used to boost the weakly modulated waveform through a transformer to generate a high-voltage sine wave pulse sequence that includes a periodic high-voltage maintenance phase, thereby realizing the second-stage boost.

[0014] In this embodiment of the invention, a closed-loop data acquisition and dynamic calibration mechanism is constructed in the signal processing flow. By monitoring the changes in electrode-skin interface impedance and load characteristics in real time, the system can dynamically acquire feedback data and adaptively adjust the PWM duty cycle and switching timing parameters accordingly. This data processing method effectively overcomes the output waveform quality drift defect caused by the lack of feedback channels in existing technologies, ensuring that the stimulation parameters actually acting on the nerves remain highly consistent with the preset parameters, thus improving the output stability and reliability of the system under multiple operating conditions. This invention maximizes energy transmission efficiency by accurately modeling and calculating the phase matching, timing alignment, and energy ratio of the two signals, fully utilizing the electromagnetic coupling characteristics of the transformer. This data processing method overcomes the defect of low electromagnetic conversion efficiency caused by the separate signal generation strategy, and can accurately synthesize high-voltage sinusoidal pulse sequences with specific timing characteristics, improving energy utilization while ensuring the morphological accuracy and modulation effect of the output waveform.

[0015] In the motion sickness prevention watch system based on targeted neural modulation described in this embodiment of the invention, the main control chip turns on the power switch through the I / O port to power the entire motion sickness prevention control circuit, including: Step 111: The main control chip initializes and detects the start signal sent by the user through the external interface. Specifically, after the main control chip is powered on internally, it begins to perform initialization operations, configuring its core operating parameters, including setting the chip's clock frequency to ensure stable operation at a preset rate, setting the initial operating mode and level state of all I / O ports to prevent erroneous I / O outputs that could cause circuit abnormalities, and configuring parameters related to communication with the external interface to ensure signal transmission stability. After completing the above initialization operations, the main control chip enters the start signal detection state, continuously monitoring the start signal sent by the user through the external interface. The external interface includes physical operation buttons on the watch body and Bluetooth communication interfaces used for data interaction with WeChat mini programs. The main control chip receives signals from these two types of external interfaces in real time and parses the received signals to determine whether they are start commands that meet the preset requirements.

[0016] Step 112: After receiving the start signal, the main control chip outputs a high-level signal to the power switch control terminal through a designated IO port. Specifically, after the main control chip confirms that it has received a valid start signal from the external interface through signal parsing, it first performs a secondary verification of the integrity and legality of the start signal to ensure that the signal has not been lost or interfered with, and that the signal characteristics completely match the preset start command characteristics. After the verification is passed, the main control chip determines the designated IO port for controlling the power switch according to the pre-stored circuit control logic. This designated IO port has been pre-configured to output mode during the initialization phase and has established a dedicated connection with the power switch control terminal. Subsequently, the main control chip generates a high-level control signal internally and transmits the high-level signal stably to the control terminal of the power switch circuit through the designated IO port, providing the necessary trigger signal to drive the power switch circuit into the conduction state.

[0017] Step 113: The high-level signal drives the power supply switch circuit to conduct, providing working voltage for the entire anti-motion sickness control circuit. Specifically, this includes: the high-level signal transmitted to the control terminal of the power supply switch directly acts on the switching element in the power supply switch circuit. The control characteristics of this switching element are adapted to the high-level signal parameters output by the main control chip's IO port, and it can overcome its own conduction threshold under the action of the high-level signal; when the high-level signal continuously acts on the control terminal of the switching element and reaches the conduction condition, the switching element changes from the initial cutoff state to the conduction state, thereby forming a complete current path in the entire power supply switch circuit; after the power supply switch circuit is conducted, the electrical energy stored in the watch's internal energy storage power supply (such as a lithium battery) is converted into a stable working voltage that meets the power requirements of each module of the anti-motion sickness control circuit. This working voltage is delivered to the first-stage boost module, coupling module, second-stage boost module, and neural modulation module through the power supply lines in the circuit, providing continuous and stable power support for these subsequent modules to perform operations such as PWM square wave output, LC circuit charging, transformer electromagnetic coupling, high-voltage sine wave pulse sequence generation, and neural stimulation signal application.

[0018] In this embodiment of the invention, the main control chip initializes and detects the start signal to ensure that the chip enters the working ready state in advance. At the same time, it recognizes the start command sent by the user through the external interface, avoiding instruction response delay or misjudgment caused by the chip not being initialized, thus improving the reliability and convenience of user operation. The high-level output is triggered only after receiving the user's start signal, realizing on-demand power supply instead of continuous power supply, which can reduce the device's idle power consumption, effectively extend the battery life after a single charge, and reduce the inconvenience of frequent charging for users. The fast drive switching circuit is turned on to ensure that the entire anti-motion sickness control circuit obtains a stable working voltage in a timely manner, laying the foundation for the normal operation of subsequent boost, coupling, neural regulation and other modules. At the same time, the IO port drive method responds quickly, avoiding power supply delay from affecting the immediate start of the anti-motion sickness function, ensuring that users can use it quickly when needed.

[0019] In the motion sickness prevention watch system based on targeted neural modulation described in this embodiment of the invention, the main control chip outputs a PWM square wave to drive the transistor to switch frequently, thereby driving the LC circuit to continuously charge, achieving the first-stage boost, including: Step 121: After obtaining the operating voltage, the main control chip acquires the voltage feedback signal from the output of the LC circuit in real time through the analog-to-digital conversion interface. Specifically: after obtaining a stable operating voltage and completing the initialization configuration, the main control chip starts the internally integrated analog-to-digital conversion function module, configures the relevant registers of the module, and sets parameters such as the reference voltage, resolution, and sampling and holding time for the analog-to-digital conversion; the main control chip establishes an electrical connection with the output of the LC circuit through the analog-to-digital conversion interface, which is used to transmit the analog voltage signal from the output of the LC circuit to the analog-to-digital converter inside the main control chip; the main control chip generates a sampling trigger signal according to a preset sampling frequency, and initiates an analog-to-digital conversion once at each trigger moment, converting the instantaneous analog voltage value at the output of the LC circuit at the current moment into a digital quantity; the main control chip reads the digital voltage value stored in the analog-to-digital conversion result register, and stores the value and the corresponding sampling time information together in the internal data buffer to form a set of sampling data pairs containing time and voltage values; the main control chip continuously performs the above sampling operation to realize real-time tracking and acquisition of the voltage waveform at the output of the LC circuit, providing raw data support for subsequent waveform analysis and parameter adjustment.

[0020] Step 122: The main control chip discretizes the waveform of the acquired voltage feedback signal within a single cycle. By dividing the waveform into multiple consecutive small triangles and accumulating their areas, the actual area enclosed by the waveform and the time axis within the cycle is calculated. This includes: the main control chip continuously acquires the voltage feedback signal from the output of the LC circuit through an analog-to-digital converter interface at a preset fixed sampling frequency, obtaining multiple discrete voltage sample values ​​and corresponding sampling times within a complete cycle, with the time interval between adjacent sampling points being a fixed value; the main control chip determines the start and end times of a complete cycle based on the fundamental frequency of the PWM square wave, and extracts the sequence of all sampling points within the time interval between the start and end times; the main control chip... The time interval between two adjacent sampling points is considered as a calculation unit. For each calculation unit, two right triangles are constructed with the time interval as the base and the starting and ending voltage values ​​of the calculation unit as the heights, respectively. The first right triangle has the first half of the time interval as the base and the starting voltage value as the height, while the second right triangle has the second half of the time interval as the base and the ending voltage value as the height. The main control chip calculates the area of ​​the first and second right triangles, and the sum of the areas of the two triangles is the approximate area value enclosed by the waveform and the time axis within the calculation unit. The main control chip accumulates the areas of the two triangles for all calculation units to obtain the total actual area enclosed by the waveform and the time axis throughout the entire cycle.

[0021] Specifically: The main control chip first calculates the theoretical duration of a complete cycle based on the preset PWM square wave fundamental frequency parameters, or identifies the crossing point where the waveform enters the positive half-cycle from the negative half-cycle by performing zero-crossing detection on the acquired voltage feedback signal as the cycle start marker, and continuously detects the time interval between two rising zero-crossing points as the actual cycle length, thereby determining the start and end times of a complete cycle; The main control chip extracts all discrete voltage sample values ​​and their corresponding sampling times within the time interval between the start and end times from the internal data buffer, forming the sampling point sequence of the current cycle. This sequence contains N sampling points, and the time interval between adjacent sampling points is determined by a fixed sampling frequency, which is a constant value Δt; The main control chip treats the time interval between two adjacent sampling points as an independent calculation unit. For the i-th calculation unit composed of the i-th sampling point (ti, Vi) and the (i+1)-th sampling point (ti+1, Vi+1), the time interval Δt is used as the base, and the starting voltage value Vi and the ending voltage value Vi+1 of the unit are used as the heights, respectively. Two right-angled triangles are constructed. The first right-angled triangle has its base at the first half of the time interval (half a Δt) and its height at the starting voltage value Vi. The second right-angled triangle has its base at the second half of the time interval (half a Δt) and its height at the ending voltage value Vi+1. The main control chip calculates the area of ​​the first right-angled triangle as the product of the base and half the height (Vi) and one-quarter of Δt, and calculates the area of ​​the second right-angled triangle as the product of Vi+1 and one-quarter of Δt. The sum of the areas of the two triangles is the approximate area enclosed by the waveform and the time axis within the calculation unit. The main control chip performs the above area calculation on all calculation units from the first sampling point to the one before the last sampling point within the cycle, and sums the areas of the two triangles obtained by each calculation unit to obtain the total actual area enclosed by the waveform and the time axis throughout the entire cycle. This area value represents the integral effect of the LC circuit output energy within the cycle. The main control chip stores this actual area value in an internal register as a quantitative evaluation index of the boost effect in the current cycle, which is used for subsequent closed-loop control calculations. Step 123: The main control chip compares the calculated actual area value with the preset target area value, and dynamically adjusts the duty cycle of the PWM square wave according to the deviation between the two using a proportional-integral-derivative (PID) control algorithm. This includes: the main control chip subtracts the calculated actual area value of the current cycle from the target area value stored in the internal memory to obtain the area deviation value; the area deviation value is input into the proportional, integral, and derivative stages respectively: the proportional stage multiplies the deviation value by a proportional coefficient to obtain the proportional control quantity; the integral stage accumulates the deviation values ​​of each cycle and multiplies them by an integral coefficient to obtain the integral control quantity; the derivative stage multiplies the difference between the current deviation value and the deviation value of the previous cycle by a derivative coefficient to obtain the derivative control quantity; the proportional control... The total PID control output is obtained by summing the integral control output, the derivative control output, and the integral control output. The main control chip determines the adjustment direction and step size of the PWM square wave duty cycle based on the magnitude and direction of the PID control output. Specifically, if the PID output is positive, the PWM duty cycle is increased; if it is negative, the PWM duty cycle is decreased. The adjustment step size is positively correlated with the absolute value of the PID output or a fixed step size is used in combination with sign judgment. The main control chip outputs the adjusted PWM square wave signal to the base of the NPN transistor through an I / O port, and repeats the acquisition, calculation, comparison, and adjustment process in each subsequent cycle to form a closed-loop feedback control, so that the actual area value gradually approaches and stabilizes near the preset target area value.

[0022] Specifically: The main control chip reads a preset target area value from its internal memory. This target area value is a reference parameter pre-calibrated and stored based on the circuit design requirements and the expected first-stage boost output amplitude. The main control chip subtracts the target area value from the actual area value of the current cycle calculated in step 122 to obtain the area deviation value of the current cycle. This deviation value can be positive or negative; a positive value indicates that the actual output energy is lower than the target value, and a negative value indicates that the actual output energy is higher than the target value. The main control chip uses the area deviation value as input to activate the internally integrated proportional-integral-derivative control algorithm module, sending the deviation value into the proportional loop and multiplying the deviation value by a preset proportional coefficient to obtain the area deviation value. The proportional control quantity is proportional to the current deviation. Simultaneously, the deviation value is fed into the integral stage, which first sums the current deviation value with the historical deviation values ​​from all previous cycles to obtain a cumulative deviation sum. This sum is then multiplied by a preset integral coefficient to obtain the integral control quantity related to the historical cumulative effect of the deviation. Simultaneously, the deviation value is fed into the derivative stage, which first calculates the difference between the current deviation value and the deviation value from the previous cycle to obtain the rate of change of the deviation. This rate of change is multiplied by a preset derivative coefficient to obtain the derivative control quantity related to the trend of deviation change. The main control chip algebraically sums the proportional, integral, and derivative control quantities to obtain the total PID control output.

[0023] The output is a value that comprehensively reflects the current deviation magnitude, historical accumulation, and future trend. The main control chip determines the adjustment strategy for the PWM square wave duty cycle based on the sign and absolute value of the PID control output. Specifically: if the PID control output is positive, it indicates a need to increase output energy, and the main control chip increases the PWM square wave duty cycle accordingly; if the PID control output is negative, it indicates a need to reduce output energy, and the main control chip decreases the PWM square wave duty cycle accordingly. The specific adjustment step size is positively correlated with the absolute value of the PID control output, i.e., the larger the deviation, the larger the adjustment amplitude; the smaller the deviation, the smaller the adjustment amplitude. When the deviation is within the allowable range, only fine-tuning is performed or the current duty cycle is kept unchanged. The main control chip writes the adjusted duty cycle parameter into the comparison register of the PWM waveform generator to generate a new PWM square wave. In each subsequent working cycle, the main control chip repeats the acquisition, calculation, comparison, and adjustment process described in steps 121 to 123, forming a continuous closed-loop feedback control, so that the actual area value gradually approaches and stably maintains near the preset target area value, thereby achieving precise control of the first-stage boost output.

[0024] Step 124: The main control chip outputs an adjusted PWM square wave signal to the base of the NPN transistor through an IO port to control the transistor to perform high-frequency switching.

[0025] Specifically: The PWM waveform generator inside the main control chip generates a PWM square wave signal that meets the requirements according to the duty cycle parameters adjusted in step 123 and the preset PWM frequency parameters; the PWM square wave signal is routed to an I / O port on the main control chip that is specially configured for PWM output function. This I / O port has been set to push-pull output mode during the initialization phase and has sufficient driving capability; the main control chip continuously outputs the PWM square wave signal through this I / O port. The high level period of the signal corresponds to the conduction period of the transistor, and the low level period corresponds to the turn-off period of the transistor; The PWM square wave signal is transmitted to the base of the NPN transistor through wiring on the circuit board, forming a complete drive circuit with the base resistor. When the PWM signal is high, the base receives a forward bias voltage, generating sufficient base current to make the transistor enter the saturation conduction state. When the PWM signal is low, the base bias voltage disappears, and the transistor is quickly turned off. Through the high-frequency switching of the PWM square wave, precise control of the transistor's on and off states is achieved. The on and off frequencies are consistent with the frequency of the PWM square wave, and the on-time percentage is consistent with the duty cycle of the PWM square wave.

[0026] Step 125: The switching action of the transistor drives the LC oscillation circuit to perform periodic charging and discharging, generating a transient high voltage higher than the power supply voltage at the output of the LC circuit, thereby realizing the first stage of voltage boost.

[0027] Specifically: When the PWM square wave signal output in step 124 is high, the NPN transistor is turned on. At this time, one end of the inductor in the LC circuit is connected to ground through the transistor, and the power supply charges the inductor through another path. The current in the inductor gradually increases, and the electrical energy is converted into magnetic energy and stored in the inductor coil. When the PWM square wave signal changes from high to low, the NPN transistor quickly switches from the on state to the off state, and the current flowing through the inductor is instantly cut off. According to the law of electromagnetic induction, a reverse induced electromotive force is generated across the inductor. The direction of this electromotive force attempts to maintain the continued flow of current, causing the voltage across the inductor to rise rapidly. This voltage is related to... The power supply voltages are superimposed to form a transient high voltage higher than the power supply voltage. This transient high voltage is stored and filtered by the capacitor in the LC circuit. The capacitor is charged and stores charge during the inductor's discharge. Before the next charging cycle, the capacitor releases energy to the load to maintain the output voltage. With the high-frequency repeated switching of the PWM square wave, the inductor periodically charges and discharges, and the capacitor continuously stores and releases charge, forming a stable DC or pulsating DC voltage at the output of the LC circuit that is higher than the input power supply voltage, thus completing the first-stage boost process. The boosted voltage will be sent to the subsequent coupling module as the input energy for the next stage of processing.

[0028] In the motion sickness prevention watch system based on targeted neural modulation described in this embodiment of the invention, the first-stage boost converter is connected to the first and second input terminals of the transformer. Simultaneously, based on the PWM signal of the first-stage boost module, the main control chip controls the outputs of the other two I / O ports to control the conduction and cutoff of the first and second output terminals of the transformer. Through electromagnetic coupling synthesis via the transformer, a weakly modulated waveform is generated, including: Step 131: The high-level signal output from the first-stage boost circuit is used as the working power supply for the primary-side drive circuit of the transformer. It is connected to the first and second input terminals of the primary coil of the transformer to complete the working power supply connection. Specifically, this includes: firstly, acquiring the high-level signal output from the first-stage boost module 12. This signal is a transient high-voltage signal generated after the LC oscillation circuit in module 12 is periodically charged and discharged. Its voltage value meets the working requirements of the primary-side drive circuit of the transformer. Then, using this high-level signal as the dedicated working power supply for the primary-side drive circuit of the transformer, it is physically connected to the first and second input terminals of the primary coil of the transformer through the preset wires inside the watch. This ensures that the wire connection is firm and has good contact, avoiding power transmission interruption or voltage attenuation due to poor contact. After the connection is completed, the power input status of the primary-side drive circuit is checked to confirm that the high-level signal can be stably delivered to the primary coil of the transformer.

[0029] Step 132: After the power supply connection is completed, the main control chip generates two complementary square wave control signals based on the timing of the PWM square wave signal used in the first-stage boost converter through its two other independent I / O ports. Specifically, after completing the power supply connection on the primary side of the transformer in step 131 and confirming stable power supply, the main control chip first reads the timing parameters of the PWM square wave signal used to drive the transistor in the first-stage boost module 12, including the frequency, duty cycle, and high-level / low-level switching period of the PWM square wave signal, to determine the timing parameters obtained by the main control chip. The timing information is accurate; then the main control chip calls the internal preset signal generation program, and based on the acquired PWM square wave timing parameters, outputs signals through its two other independent IO ports pre-configured as output mode, generating two square wave control signals; these two square wave control signals have complementary characteristics, that is, when one square wave control signal is in a high level state, the other square wave control signal is in a low level state, and the frequency of the two signals is consistent with the frequency of the PWM square wave signal of the first-stage boost module 12, so as to avoid subsequent circuit control disorder due to timing asynchrony.

[0030] Step 133 involves sending the two complementary square wave control signals to the gates of two MOSFET switches connected in the primary coil circuit of the transformer, respectively, to control their alternating on and off states. Specifically, this includes: first, pre-installing two compatible MOSFET switches in the primary coil circuit of the transformer, ensuring that the model parameters of the two MOSFET switches match the current and voltage requirements of the primary coil, and connecting the two switches in series in different branches of the primary coil circuit; then, through a dedicated signal transmission line inside the watch, sending the two complementary square wave control signals generated by the main control chip in step 132 one-to-one to the two MOSFET switches. The gate of the FET switch; when one of the square wave control signals is high, the gate of the corresponding MOSFET switch receives a trigger signal, and the switch enters the conduction state, allowing current to flow through its primary coil branch; when the square wave control signal switches to low, the gate of the corresponding MOSFET switch loses the trigger signal, and the switch switches to the cutoff state, blocking the current in its branch; at the same time, the other complementary square wave control signal changes according to the opposite level state, driving the corresponding MOSFET switch to alternately turn on and off, ensuring that the two MOSFET switches do not turn on or off at the same time.

[0031] Step 134: The alternating on and off operation of the two MOSFET switches causes the high-level operating power supply to be alternately applied to both ends of the primary coil of the transformer, generating an alternating current with a periodically changing direction. This periodically changing alternating current, through the electromagnetic coupling of the transformer core's magnetic circuit, is synthesized into a weakly modulated waveform in the secondary coil. Specifically, as the two MOSFET switches alternately turn on and off according to the instruction of the complementary square wave control signal, the high-level operating power supply connected in step 131 is alternately applied to both ends of the primary coil. When the first MOSFET switch is on, the high-level operating power supply is applied to the first end of the primary coil through this switch, with current flowing in from the first end and out from the second end; when the second MOSFET switch is on... When the switching transistor is turned on, a high-level operating power supply is applied to the second terminal of the primary coil through the switching transistor. Current flows into the second terminal of the primary coil and flows out from the first terminal. Through this alternating power supply method, an alternating current with a periodic change in direction following the operation of the switching transistor is generated in the primary coil of the transformer. This alternating current generates a periodic magnetic field inside the transformer. The magnetic field is transmitted through the magnetic circuit of the transformer core and acts on the secondary coil of the transformer. Under the action of the changing magnetic field, the secondary coil induces corresponding current and voltage. These induced signals are integrated by the circuit of the secondary coil and finally synthesized into a weakly modulated waveform that meets the input requirements. At the same time, the design of the transformer core magnetic circuit can achieve electromagnetic isolation between the primary coil and the secondary coil, preventing the signal of the secondary coil from interfering with the normal operation of the primary coil circuit.

[0032] In this embodiment of the invention, the high-level signal output from the first-stage boost circuit is used as the operating power supply for the primary-side drive circuit of the transformer and connected to the first and second input terminals of the primary coil. This ensures that the primary side of the transformer receives a stable and suitable operating voltage that matches the output characteristics of the first-stage boost circuit, preventing abnormal operation of the primary-side drive circuit due to unstable or mismatched power supply voltage. Simultaneously, this power supply connection lays the foundation for subsequent electromagnetic coupling via the transformer. The main control chip generates two complementary square wave control signals based on the timing of the PWM square wave signal used in the first-stage boost circuit. This ensures that the control signals are synchronized with the PWM signals of the preceding boost stage, preventing deviations in the current control of the primary coil of the transformer due to timing discrepancies. Furthermore, the two complementary square wave control signals ensure that the two subsequent MOSFET switches do not simultaneously turn on or off, preventing short circuits or lack of current in the primary coil, thus guaranteeing precise control of the transformer primary coil current. Signals are sent to the gates of two MOSFET switches to control their alternating on and off states. The MOSFET switches possess high-frequency switching characteristics, enabling rapid response to changes in the square wave control signal and achieving high-frequency alternating action. This reduces energy loss during switching, meeting the low-power design requirements of the anti-motion sickness watch. Simultaneously, precise alternating on and off control ensures that the primary coil of the transformer receives current at a preset rhythm, providing reliable switching control support for the subsequent generation of periodically changing alternating current. The periodic alternating current generated by the alternating action of the two MOSFET switches is synthesized into a weakly modulated waveform in the secondary coil through electromagnetic coupling of the transformer core's magnetic circuit. On one hand, electromagnetic coupling isolates the primary and secondary circuits of the transformer, preventing reverse interference from secondary circuit signals to the primary control circuit, thus improving the overall system stability. On the other hand, the generated weakly modulated waveform parameters meet the input requirements of the subsequent second-stage boost module, providing a suitable basic waveform for the second-stage boost to generate a high-voltage sine wave pulse sequence.

[0033] In the motion sickness prevention watch system based on targeted neural modulation described in this embodiment of the invention, the weakly modulated waveform is boosted by a transformer to generate a high-voltage sine wave pulse sequence that includes a periodic high-voltage maintenance phase, thereby achieving a second-stage boost, including: Step 141 involves applying the weak modulation waveform to the secondary coil of the transformer. Specifically, this includes: first confirming that the parameters of the weak modulation waveform synthesized by the secondary coil of the transformer in module 134 meet the preset input requirements. This weak modulation waveform is an induced signal generated in the secondary coil after electromagnetic coupling by the alternating current of the primary coil; then, through a dedicated signal transmission line pre-installed inside the watch, the weak modulation waveform is applied completely and stably to the secondary coil of the transformer. During the application process, it is ensured that the line connection is firm and the contact is good to avoid signal attenuation or distortion of the weak modulation waveform due to loose lines or poor contact; at the same time, the signal reception status of the secondary coil is monitored to confirm that the weak modulation waveform can be accurately input to the secondary coil.

[0034] Step 142: Utilizing the weakly modulated waveform applied to the secondary coil of the transformer, the voltage of the weakly modulated waveform is boosted through the electromagnetic induction effect of the transformer's core magnetic circuit and the coil turns ratio, generating a high-voltage AC waveform. Specifically, this includes: after the weakly modulated waveform is stably applied to the transformer's secondary coil, relying on the transformer's internal core magnetic circuit structure, which can efficiently transmit magnetic field signals and reduce magnetic field energy loss; simultaneously utilizing the preset turns ratio between the transformer's primary and secondary coils, which is designed and determined based on the target voltage value required for the second-stage voltage boost and the weakly modulated waveform voltage parameters input to the primary coil; when the weakly modulated waveform generates a corresponding current in the secondary coil, it will induce an electromagnetic induction effect through the core magnetic circuit. Due to the design of the turns ratio, the secondary coil will induce a voltage higher than the weakly modulated waveform voltage, thereby boosting the voltage of the weakly modulated waveform and ultimately generating a high-voltage AC waveform that meets the initial requirements of the second-stage voltage boost; during the voltage boosting process, the voltage value of the high-voltage AC waveform is monitored in real time to ensure that it is within the preset voltage range, avoiding excessively high or low voltage situations.

[0035] Step 143 involves inputting the high-voltage AC waveform into a rectification and filtering circuit for processing, forming a high-voltage sine wave pulse sequence that includes a periodic high-voltage maintenance phase. Specifically, this includes: first, transmitting the high-voltage AC waveform generated in step 142 to a preset rectification and filtering circuit via a dedicated line. This rectification circuit uses a bridge rectification structure, which can convert both the positive and negative half-cycle signals of the high-voltage AC waveform into a single-direction DC signal, avoiding the alternating direction of the AC signal from affecting subsequent processing; then, the rectified DC signal enters the filtering circuit, which consists of capacitors and inductors, capable of filtering out ripple components in the rectified DC signal, keeping the signal voltage relatively stable; during the filtering process, according to the requirements of the anti-motion sickness watch's neural regulation function, the processed signal is set to form a waveform that includes a periodic high-voltage maintenance phase. The duration of this high-voltage maintenance phase is determined based on the neural regulation requirements for inhibiting gastric muscle spasms and the excitability of the vomiting center, ensuring that the signal voltage remains stable at a high voltage during the maintenance phase; after complete processing by the rectification and filtering circuit, a high-voltage sine wave pulse sequence that meets the requirements of the neural regulation signal is finally formed.

[0036] Step 144 involves performing impedance matching and safety isolation processing on the high-voltage sine wave pulse sequence through the output circuit to achieve the second-stage boost. Specifically, this includes: firstly, inputting the high-voltage sine wave pulse sequence formed in step 143 into the output circuit inside the watch. This output circuit includes an impedance matching unit and a safety isolation unit. In the impedance matching unit, the impedance of the output circuit is adjusted according to the output impedance of the high-voltage sine wave pulse sequence and the impedance parameters of the electrode that subsequently contacts the median nerve on the inner side of the wrist, matching the output impedance with the electrode impedance. This reduces signal reflection loss during transmission, ensuring that the high-voltage sine wave pulse sequence can be delivered to the electrode with high energy transmission efficiency. Simultaneously, in the safety isolation unit, optocoupler isolation or a dedicated isolation transformer is used to achieve electrical isolation between the output circuit and the preceding circuit, preventing high-voltage signal reverse transmission from damaging the preceding control circuit and ensuring the user's electrical safety when contacting the electrode. After impedance matching and safety isolation processing, the voltage, impedance, and safety of the high-voltage sine wave pulse sequence all meet the final requirements of the second-stage boost, successfully achieving the second-stage boost.

[0037] In this embodiment of the invention, applying a weakly modulated waveform to the secondary coil of the transformer accurately receives the adapted waveform generated by the coupling module, ensuring that the weakly modulated waveform optimized by the front-end circuit is completely transmitted to the second-stage boost stage. This avoids waveform loss or distortion during transmission, laying the foundation for subsequent voltage boosting and waveform optimization, and ensuring that the input signal for the second-stage boost meets design requirements. Utilizing the electromagnetic induction effect of the transformer core magnetic circuit and the coil turns ratio to boost the voltage allows for precise control of the boost amplitude, ensuring that the output high-voltage AC waveform reaches the intensity required to stimulate the median nerve on the inner side of the wrist. Simultaneously, the electromagnetic induction boost method offers high stability, preventing excessive voltage fluctuations from affecting nerve stimulation signals. The signal is invalid; by processing the high-voltage AC waveform through rectification and filtering circuits, irregular AC waveforms can be converted into smooth high-voltage sine waves, reducing the stimulation of human skin and nerves by the sharp edges of the waveform and improving user comfort; at the same time, the periodic high-voltage maintenance phase avoids continuous high voltage acting on the human body and causing discomfort; the impedance matching processing of the output circuit enables the high-voltage sine wave pulse sequence to be adapted to the impedance of the wristband electrode of the subsequent nerve modulation module, ensuring that the signal is efficiently transmitted to human nerves, avoiding signal attenuation due to impedance mismatch, and ensuring the nerve modulation effect; the safety isolation processing can prevent the high-voltage signal from interfering with the front-end low-voltage control circuit, protecting the main control chip, transformer and other core components from damage.

[0038] In the motion sickness prevention watch system based on targeted neural modulation described in this embodiment of the invention, based on the second-stage boost, the high-voltage sine wave pulse sequence is applied to the median nerve on the inner side of the wrist via wristband electrodes to interfere with abnormal signal transmission between the vestibular system and the gastrointestinal tract, including: The high-voltage sine wave pulse sequence output from the second-stage boost circuit is transmitted to the wristband electrode output interface of the watch. Specifically, this involves: first, confirming whether the high-voltage sine wave pulse sequence output from the second-stage boost circuit meets the preset technical standards. The pulse sequence must have a voltage range of 25-30V and include a periodic high-voltage maintenance phase, while ensuring that the pulse sequence has no signal distortion or voltage fluctuation issues; then, transmitting the high-voltage sine wave pulse sequence completely to the wristband electrode output interface of the watch through a dedicated anti-interference signal transmission line pre-deployed inside the watch; checking the strength of the line connection during transmission to avoid signal attenuation due to poor contact; and verifying whether the electrical characteristics of the output interface and the transmission line match, ensuring that the interface can stably receive and temporarily store the high-voltage sine wave pulse sequence, preparing for subsequent signal transmission to the wristband electrode.

[0039] The high-voltage sine wave pulse sequence is loaded onto a pair of wristband electrodes that contact the inside of the wrist through the wristband electrode output interface of the watch. Specifically, this includes: first, checking the signal output status of the wristband electrode output interface to confirm that the high-voltage sine wave pulse sequence can be stably output; then, physically connecting the pair of wristband electrodes, which are integrated with the watch wristband, to the output interface. These electrodes are made of a skin-friendly material with excellent conductivity to avoid discomfort or affecting signal transmission efficiency when in contact with the skin inside the wrist; instructing the user to adjust the tightness of the wristband when wearing the watch to ensure that the wristband electrodes fit snugly against the skin inside the wrist without gaps; and then smoothly loading the temporarily stored high-voltage sine wave pulse sequence onto the pair of wristband electrodes through the output interface, so that the electrode surface forms an electrical signal carrier that can act on the human body.

[0040] The main control chip adjusts the circuit parameters that generate the high-voltage sine wave pulse sequence to control the amplitude, frequency, and duration of the pulse sequence applied to the wristband electrodes, forming a controlled electrical pulse sequence. Specifically, the main control chip first reads the key circuit parameters that generate the high-voltage sine wave pulse sequence, including the voltage control parameters of the boost circuit related to the pulse amplitude, the PWM square wave timing parameters related to the pulse frequency (based on the design logic of outputting the PWM square wave through the microcontroller's I / O port), and the signal output period parameters related to the pulse duration. Then, according to the preset neural modulation control logic or by receiving personalized instructions from the user via a WeChat mini-program transmitted through the Bluetooth interface, the main control chip precisely adjusts the above circuit parameters. When adjusting the amplitude, it ensures that the voltage of the high-voltage sine wave pulse sequence remains stable within the safe and effective range of 25-30V. When adjusting the frequency, it adapts to the conduction frequency of abnormal signals between the vestibular system and the gastrointestinal tract. When adjusting the duration, it sets a reasonable signal output duration based on the degree of motion sickness reported by the user. Through the coordinated optimization of these parameters, the pulse sequence applied to the wristband electrodes is transformed into a controlled electrical pulse sequence with controllable parameters that meets individual needs.

[0041] Based on the controlled electrical pulse sequence, a wristband electrode is applied to the median nerve on the inner side of the wrist to interfere with the abnormal signal transmission pathway between the vestibular system and the gastrointestinal tract. Specifically, with the wristband electrode in close contact with the skin on the inner side of the wrist, the wristband electrode loaded with the controlled electrical pulse sequence directly applies electrical signals to the median nerve on the inner side of the wrist. The choice of this application location is based on the physiological association between the median nerve and the signal transmission pathways of the vestibular system and the gastrointestinal tract, ensuring that the electrical pulses can effectively penetrate into the nerve tissue. The controlled electrical pulse sequence, through moderate electrical stimulation of the median nerve, interferes with the abnormal excitation signals transmitted from the vestibular system to the gastrointestinal tract, while simultaneously blocking the spasm trigger signals transmitted from the gastrointestinal tract to the vomiting center, disrupting the normal transmission pathway of abnormal signals, and ultimately inhibiting the occurrence of gastric muscle spasms and the excitability of the vomiting center, thereby achieving the goal of relieving motion sickness symptoms from the source.

[0042] In this embodiment of the invention, the high-voltage sine wave pulse sequence output from the second-stage boost circuit is transmitted to the wristband electrode output interface of the watch. This enables signal connection between the second-stage boost circuit and the wristband electrode output interface, ensuring that the high-voltage sine wave pulse sequence is transmitted completely and without attenuation from the boost circuit to the electrode interface. This avoids the impact of signal transmission interruption or distortion on the subsequent electrical signal's effect on the human nervous system. The wristband electrode, which contacts the inside of the wrist, allows the electrical signal to directly act on the skin surface, improving ease of use. It also allows the main control chip to adjust according to individual differences in user tolerance, motion sickness severity, etc. The amplitude, frequency, and duration of the pulse sequence can be flexibly adjusted to better suit the physical conditions of different users, avoiding poor results or discomfort for some users due to fixed parameters, thus improving the accuracy of adjustment. At the same time, parameter control can ensure that the pulse sequence is always within a safe and effective range. The controlled pulse sequence is precisely applied to the median nerve on the inner side of the wrist, directly interfering with abnormal signal transmission between the vestibular system and the gastrointestinal tract, inhibiting the excitability of gastric muscle spasms and the vomiting center from the source, effectively blocking the occurrence of nausea and vomiting, and achieving the core function of preventing motion sickness.

[0043] In the motion sickness prevention watch system based on targeted neural modulation described in this embodiment of the invention, the main control chip adjusts the circuit parameters that generate a high-voltage sine wave pulse sequence, controlling the amplitude, frequency, and duration of the pulse sequence applied to the wristband electrodes to form a controlled electrical pulse sequence, including: The main control chip generates a PWM control signal with a preset frequency and duty cycle through an internal timer. Specifically, the main control chip first initializes and configures the internal timer, setting the timer's clock source parameters and counting mode to ensure that the timer can run stably at the preset rate, avoiding deviations in the generation of subsequent PWM control signals due to abnormal timer basic parameters. Then, considering the boost requirements of the second-stage boost circuit in this anti-motion sickness watch system, the adjustment characteristics of the waveform modulation circuit, and the parameter standards of the high-voltage sine wave pulse sequence required for targeted nerve regulation, such as a final output sine wave voltage of 25-30V and an overall pulse period of approximately 4 seconds, the preset frequency and duty cycle of the PWM control signal are determined to ensure that this frequency and duty cycle can provide a valid basis for subsequent adjustment of the amplitude and frequency of the high-voltage sine wave pulse sequence. Subsequently, the internal timer is started, and the timer generates the corresponding PWM control signal according to the set frequency and duty cycle. The main control chip monitors the generated PWM control signal waveform in real time through an internal signal detection module to confirm whether the frequency accuracy and duty cycle stability of the signal meet the preset requirements. If there is a deviation, the timer parameters are adjusted in time until a standard PWM control signal is generated.

[0044] The PWM control signal is output to the waveform modulation circuit in the second-stage boost circuit via the I / O port. The main control chip first configures the I / O port used to output the PWM control signal, sets the I / O port to output mode, and adjusts the output drive capability of the I / O port to ensure that the PWM control signal output by the I / O port has sufficient strength to cope with signal loss during transmission, while avoiding the I / O port from accidentally triggering other circuit modules in the system. Then, through a dedicated anti-electromagnetic interference signal transmission line pre-deployed inside the watch, the PWM control signal generated by the main control chip is sent from the I / O port to the waveform modulation circuit in the second-stage boost circuit. The circuit design needs to reduce the impact of external environmental interference on the PWM control signal and prevent distortion during signal transmission. During signal transmission, the main control chip continuously monitors the output status of the I / O port, and the waveform modulation circuit simultaneously performs preliminary level detection on the received PWM control signal. Both parties work together to confirm that the PWM control signal can be transmitted completely and stably to the waveform modulation circuit, ensuring the reliability and continuity of signal transmission.

[0045] The waveform modulation circuit, based on the received PWM control signal, adjusts the output amplitude, frequency, and pulse width of the high-voltage sine wave pulse sequence in real time to generate a parameter-adjustable high-voltage sine wave pulse sequence. Specifically, after receiving the PWM control signal, the waveform modulation circuit first extracts the frequency and duty cycle information from the signal through its internal signal analysis unit, establishing a correspondence between the PWM control signal parameters and the adjustment parameters of the high-voltage sine wave pulse sequence. When adjusting the output amplitude of the high-voltage sine wave pulse sequence, the waveform modulation circuit adjusts the conduction time of internal boost-related circuit components (such as transistors and MOSFETs) according to the change in the duty cycle of the PWM control signal. When the duty cycle increases, the boost amplitude is increased accordingly, making the output sine wave voltage closer to the upper limit of the 25-30V range; when the duty cycle decreases, the boost amplitude is decreased accordingly, ensuring voltage stability. The voltage is set within the effective range of 25-30V. When adjusting the output frequency, the waveform modulation circuit uses the frequency of the PWM control signal as a reference to synchronously adjust the period of the high-voltage sine wave pulse sequence, ensuring that the pulse sequence frequency matches the PWM control signal frequency and accurately interferes with abnormal signal transmission between the vestibular system and the gastrointestinal tract. When adjusting the pulse width, the waveform modulation circuit adjusts the duration of the high-voltage maintenance phase in the high-voltage sine wave pulse sequence according to the high-level duration of the PWM control signal, achieving precise control of the pulse width. During the adjustment process, the waveform modulation circuit collects the output high-voltage sine wave pulse sequence parameters in real time through the internal parameter monitoring module and compares them with the preset adjustment target. If there is a deviation, it is corrected in time according to the PWM control signal, ultimately generating a high-voltage sine wave pulse sequence with adjustable amplitude, frequency, and pulse width.

[0046] The adjustable high-voltage sine wave pulse sequence is used as a controlled electrical pulse sequence. Specifically, the process includes: a waveform modulation circuit first performing comprehensive parameter detection on the generated adjustable high-voltage sine wave pulse sequence to confirm whether its amplitude is stable within the 25-30V range, whether the frequency meets the requirements for the transmission of abnormal interference signals, and whether the pulse width is suitable for the duration requirements of neural modulation. Simultaneously, the waveform integrity of the pulse sequence is checked to avoid waveform distortion or voltage fluctuations. Next, the compatibility of the adjustable high-voltage sine wave pulse sequence with the subsequent wristband electrode is verified to ensure that the output characteristics of the pulse sequence match the conductivity and contact characteristics of the wristband electrode, guaranteeing that the subsequent signal can be effectively transmitted to the median nerve on the median side of the wrist. After completing all detection and verification, the adjustable high-voltage sine wave pulse sequence is determined as the controlled electrical pulse sequence, preparing for subsequent application to the median nerve via the wristband electrode to achieve targeted neural modulation.

[0047] In this embodiment of the invention, the main control chip generates a PWM control signal with a preset frequency and duty cycle through an internal timer. Relying on the precise timing characteristics of the timer, it ensures that the frequency and duty cycle parameters of the PWM control signal are stable and meet design requirements. This provides a precise basis for the subsequent waveform modulation circuit to adjust the parameters of the high-voltage sine wave pulse sequence, avoiding subsequent adjustment deviations due to fluctuations in the control signal parameters and ensuring the initial accuracy of the electrical pulse sequence parameter adjustment. The PWM control signal is output to the waveform modulation circuit of the second-stage boost circuit through the I / O port. The stable signal transmission capability of the I / O port ensures that the control signal is transmitted to the modulation circuit completely and without delay, avoiding signal attenuation or distortion during transmission. This allows the waveform modulation circuit to receive and respond to the adjustment commands from the main control chip in a timely manner, ensuring the continuity and real-time performance of the parameter adjustment process. The circuit adjusts the output amplitude, frequency, and pulse width of the high-voltage sine wave pulse sequence in real time according to the PWM control signal. This allows for flexible adjustment of the core parameters of the pulse sequence, adapting to individual differences in motion sickness levels and skin tolerance among different users. This avoids the problem of some users experiencing poor results or discomfort due to fixed parameters. Furthermore, the real-time adjustment feature dynamically adjusts parameters based on changes in motion sickness symptoms during use, further enhancing the anti-motion sickness effect. Using the adjustable high-voltage sine wave pulse sequence as a controlled electrical pulse sequence, the circuit can determine the signal carrier that will subsequently act on the median nerve. The precisely adjusted parameters of this sequence meet the needs of neural regulation, ensuring that when applied to the median nerve, it accurately interferes with abnormal signal transmission between the vestibular system and the gastrointestinal tract. This ensures the effective implementation of the anti-motion sickness function while avoiding unnecessary stimulation of the body due to controlled parameters.

[0048] like Figure 2 As shown, a control method for an anti-motion sickness watch system based on targeted neural modulation is provided, the control method comprising: The main control chip turns on the power switch through the I / O port to supply power to the entire motion sickness control circuit. The main control chip outputs a PWM square wave, which drives the transistor to switch frequently, thereby driving the LC circuit to continuously charge and achieve the first stage of boost. The first-stage boost converter is connected to the first and second input terminals of the transformer. Simultaneously, based on the PWM signal of the first-stage boost module, the main control chip controls the output of the other two IO ports to realize the conduction and cutoff of the first and second output terminals of the transformer. The transformer performs electromagnetic coupling synthesis to generate a weakly modulated waveform. The weakly modulated waveform is boosted by a transformer to generate a high-voltage sine wave pulse sequence that includes a periodic high-voltage maintenance phase, thus achieving the second-stage boost.

[0049] Embodiments of the present invention also provide a computing device, including: a processor and a memory storing a computer program, wherein the computer program, when executed by the processor, performs the method described above. All implementations in the above method embodiments are applicable to this embodiment and can achieve the same technical effects.

[0050] Embodiments of the present invention also provide a computer-readable storage medium storing instructions that, when executed on a computer, cause the computer to perform the method described above. All implementations in the above method embodiments are applicable to this embodiment and can achieve the same technical effects.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A motion sickness prevention watch system based on targeted neural modulation, characterized in that, include: The power module is used by the main control chip to turn on the power switch through the IO port to supply power to the entire anti-motion sickness control circuit. The first-stage boost module is used by the main control chip to output a PWM square wave, which drives the transistor to switch frequently, thereby driving the LC circuit to charge continuously, thus realizing the first-stage boost. The coupling module is used to connect the first-stage boost transformer to the first and second input terminals of the transformer. Based on the PWM signal of the first-stage boost transformer, the main control chip controls the output of the other two IO ports respectively to realize the conduction and cutoff of the first and second output terminals of the transformer. The transformer performs electromagnetic coupling synthesis to generate a weakly modulated waveform. The second-stage boost module is used to boost the weakly modulated waveform through a transformer to generate a high-voltage sine wave pulse sequence that includes a periodic high-voltage maintenance phase, thereby achieving the second-stage boost.

2. The motion sickness prevention watch system based on targeted neural modulation according to claim 1, characterized in that, The main control chip turns on the power switch via the I / O port to power the entire motion sickness control circuit, including: The main control chip initializes and detects the start signal sent by the user through an external interface; After receiving the start signal, the main control chip outputs a high-level signal to the power switch control terminal through a designated IO port; The high-level signal drives the power supply switch circuit to conduct, providing operating voltage for the entire motion sickness control circuit.

3. The motion sickness prevention watch system based on targeted neural modulation according to claim 2, characterized in that, The main control chip outputs a PWM square wave, which drives the transistor to switch frequently, thereby driving the LC circuit to continuously charge and achieve the first stage of boost voltage, including: After obtaining the operating voltage, the main control chip acquires the voltage feedback signal at the output of the LC circuit in real time through the analog-to-digital conversion interface. The main control chip discretizes the waveform of the acquired voltage feedback signal within a single cycle. By dividing the waveform into multiple consecutive small triangles and accumulating their areas, the actual area value enclosed by the waveform and the time axis within the cycle is calculated. The main control chip compares the calculated actual area value with the preset target area value, and dynamically adjusts the duty cycle of the PWM square wave according to the deviation between the two through a proportional-integral-derivative control algorithm. The main control chip outputs an adjusted PWM square wave signal to the base of the NPN transistor through an IO port, thereby controlling the transistor to perform high-frequency switching. The switching action of the transistor drives the LC oscillation circuit to perform periodic charging and discharging, generating a transient high voltage higher than the power supply voltage at the output of the LC circuit, thus realizing the first stage of voltage boost.

4. The motion sickness prevention watch system based on targeted neural modulation according to claim 3, characterized in that, The actual area value is: The main control chip continuously acquires the voltage feedback signal at the output of the LC circuit through the analog-to-digital conversion interface at a preset fixed sampling frequency, and obtains multiple discrete voltage sample values ​​and corresponding sampling times within a complete cycle. The time interval between adjacent sampling points is a fixed value. The main control chip determines the start and end times of a complete cycle based on the base frequency of the PWM square wave, and extracts the sequence of all sampling points within the time interval between the start and end times. The main control chip treats the time interval between two adjacent sampling points as a calculation unit. For each calculation unit, it constructs two right triangles with the time interval as the base and the starting and ending voltage values ​​of the calculation unit as the heights, respectively. The first right triangle has the first half of the time interval as the base and the starting voltage value as the height, while the second right triangle has the second half of the time interval as the base and the ending voltage value as the height. The main control chip calculates the area of ​​the first and second right triangles, and the sum of the areas of the two triangles is the approximate area value enclosed by the waveform and the time axis within the calculation unit. The main control chip sums the areas of the two triangles of all computing units to obtain the total actual area enclosed by the waveform and the time axis throughout the entire cycle.

5. The motion sickness prevention watch system based on targeted neural modulation according to claim 4, characterized in that, The main control chip compares the calculated actual area value with the preset target area value, and dynamically adjusts the duty cycle of the PWM square wave based on the deviation between the two using a proportional-integral-derivative control algorithm, including: The main control chip subtracts the calculated actual area value for the current cycle from the target area value stored in its internal memory to obtain the area deviation value. This deviation value is then input into the proportional, integral, and derivative components: the proportional component multiplies the deviation value by a proportional coefficient to obtain the proportional control quantity; the integral component accumulates the deviation values ​​from each cycle and multiplies them by an integral coefficient to obtain the integral control quantity; and the derivative component multiplies the difference between the current deviation value and the deviation value from the previous cycle by a derivative coefficient to obtain the derivative control quantity. The proportional, integral, and derivative control quantities are summed to obtain the total PID control output. The main control chip then calculates the area deviation based on the P... The ID controls the magnitude and direction of the output, determining the adjustment direction and step size of the PWM square wave duty cycle. Specifically, if the PID output is positive, the PWM duty cycle is increased; if it is negative, the PWM duty cycle is decreased. The adjustment step size is positively correlated with the absolute value of the PID output or a fixed step size is used in combination with sign judgment. The main control chip outputs the adjusted PWM square wave signal to the base of the NPN transistor through an IO port, and repeats the acquisition, calculation, comparison, and adjustment process in each subsequent cycle to form a closed-loop feedback control, so that the actual area value gradually approaches and stabilizes near the preset target area value.

6. The motion sickness prevention watch system based on targeted neural modulation according to claim 5, characterized in that, The first-stage boost converter is connected to the first and second input terminals of the transformer. Simultaneously, based on the PWM signal from the first-stage boost module, the main control chip controls the outputs of the other two I / O ports to control the conduction and cutoff of the first and second output terminals of the transformer. Through electromagnetic coupling synthesis via the transformer, a weakly modulated waveform is generated, including: The high-level signal output from the first-stage boost circuit is used as the working power supply for the primary side drive circuit of the transformer. It is connected to the first and second input terminals of the primary coil of the transformer to complete the working power supply connection. After the power supply is connected, the main control chip generates two complementary square wave control signals based on the timing of the PWM square wave signal used in the first-stage boost, through the other two independent I / O ports of the main control chip. The two complementary square wave control signals are respectively sent to the gates of two MOSFET switching transistors connected in the primary coil circuit of the transformer, controlling them to alternately turn on and off. The alternating on and off actions of the two MOSFET switches cause the high-level operating power supply to be alternately applied to both ends of the primary coil of the transformer, generating an alternating current with a periodically changing direction. The alternating current with a periodically changing direction is synthesized into a weakly modulated waveform in the secondary coil through the electromagnetic coupling effect of the transformer core magnetic circuit.

7. The motion sickness prevention watch system based on targeted neural modulation according to claim 6, characterized in that, The weakly modulated waveform is boosted by a transformer to generate a high-voltage sinusoidal pulse sequence that includes a periodic high-voltage maintenance phase, thus achieving the second-stage boost, including: The weakly modulated waveform is applied to the secondary coil of the transformer; By utilizing the weakly modulated waveform applied to the secondary coil of the transformer, and through the electromagnetic induction effect of the transformer's core magnetic circuit and the coil turns ratio, the voltage of the weakly modulated waveform is boosted to generate a high-voltage AC waveform. The high-voltage AC waveform is input to a rectifier and filter circuit for processing to form a high-voltage sinusoidal pulse sequence that includes a periodic high-voltage maintenance phase. The high-voltage sinusoidal pulse sequence is impedance matched and safely isolated through the output circuit to achieve the second-stage voltage boost.

8. A control method for a motion sickness prevention watch system based on targeted neural modulation as described in any one of claims 1 to 7, characterized in that, The method includes: The main control chip turns on the power switch through the I / O port to supply power to the entire motion sickness control circuit. The main control chip outputs a PWM square wave, which drives the transistor to switch frequently, thereby driving the LC circuit to continuously charge and achieve the first stage of boost. The first-stage boost converter is connected to the first and second input terminals of the transformer. Simultaneously, based on the PWM signal of the first-stage boost module, the main control chip controls the output of the other two IO ports to realize the conduction and cutoff of the first and second output terminals of the transformer. The transformer performs electromagnetic coupling synthesis to generate a weakly modulated waveform. The weakly modulated waveform is boosted by a transformer to generate a high-voltage sine wave pulse sequence that includes a periodic high-voltage maintenance phase, thus achieving the second-stage boost.

9. A computing device, characterized in that, include: One or more processors; A storage device for storing one or more programs that, when executed by one or more processors, cause the one or more processors to perform the method as described in claim 8.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a program that, when executed by a processor, implements the method as described in claim 8.

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