Dual-mode wireless transmission system of portable brain-computer interface equipment and automatic switching method of dual-mode wireless transmission system

Abstract

The invention provides a dual-mode wireless transmission system of portable brain-computer interface equipment and an automatic switching method of the dual-mode wireless transmission system, and the system comprises a main control chip, and an electroencephalogram acquisition chip, a first wireless communication module and a second wireless communication module which are connected with the main control chip, the transmission bandwidth and the power consumption of the first wireless communication module are higher than those of the second wireless communication module; the main control chip is configured to monitor at least one system state parameter in real time; automatically selecting to start the first wireless communication module or the second wireless communication module as an active wireless module based on the system state parameter; and according to the selection result, the power supply of the inactive wireless module is firstly cut off through the independent control pin, and then the power supply of the active wireless module is switched on, so that mutual exclusion power-on is realized. The dual-mode wireless transmission system of the portable brain-computer interface device and the automatic switching method of the dual-mode wireless transmission system have the advantages of being high in intelligent degree, low in power consumption, high in adaptability and reliability, capable of prolonging the cruising ability and the like.

Description

Technical Field

[0001] This invention relates to the field of brain-computer interface technology, and in particular to a dual-mode wireless transmission system for a portable brain-computer interface device and its automatic switching method. Background Technology

[0002] With the development of wearable medical devices and brain-computer interface technology, portable electroencephalography (EEG) devices are being widely used in medical monitoring, scientific research, and consumer electronics. These devices need to operate continuously for extended periods, making them extremely sensitive to power consumption. Furthermore, the large volume of EEG signal data necessitates high transmission rates in certain scenarios (such as real-time monitoring and raw data transmission), while in other scenarios (such as intermittent feature value transmission and device standby), there are stringent power consumption requirements.

[0003] Currently, portable EEG devices on the market typically use a single wireless transmission method, such as Bluetooth or Wi-Fi. Some high-end devices may integrate both modules, but their operating modes are mostly manual selection or simple parallel standby. The manual switching solution works by the user selecting between Wi-Fi and Bluetooth based on current needs via a physical switch or software settings. This method is not intelligent, increases the user's operational burden, and may prevent the user from making optimal power consumption and performance trade-offs. The parallel standby solution works by both wireless modules being powered on and in standby mode simultaneously, activating one based on data transmission commands. The disadvantage of this solution is that even if a module is not currently in use, its standby power consumption still exists, severely wasting the device's precious battery energy and shortening battery life.

[0004] The existing technology has the following drawbacks: 1. Lack of intelligence: It cannot automatically select the optimal transmission mode based on the device's own status (such as battery level and data volume) and environmental requirements, relying on manual user intervention, resulting in a poor experience and low efficiency; 2. Insufficient power consumption optimization: During non-active periods, the wireless module usually only enters software sleep mode, and there is still a considerable static power consumption, which cannot achieve true "zero power consumption" standby. 3. Poor adaptability: The fixed switching strategy cannot cope with complex and ever-changing usage scenarios, and cannot actively downgrade to a low-power mode to extend the overall working time when the device battery is low. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a dual-mode wireless transmission system for portable EEG devices and its automatic switching method. Its core content lies in: the main control chip monitors key system parameters in real time (mainly battery level and data buffer status), and automatically selects to enable either Wi-Fi or Bluetooth transmission mode based on a preset, dynamically adjustable decision algorithm. When one mode is selected, the main control chip powers on the corresponding module via an enable pin, while simultaneously ensuring that the other module is completely powered off.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: In a first aspect, the present invention provides a dual-mode wireless transmission system for a portable brain-computer interface device. The system includes a main control chip, an EEG acquisition chip connected to the main control chip, a first wireless communication module, and a second wireless communication module. The transmission bandwidth and power consumption of the first wireless communication module are both higher than those of the second wireless communication module. The main control chip is configured as follows: Real-time monitoring of at least one system status parameter, which includes at least battery level and the amount of data to be transmitted; Based on system status parameters, the first or second wireless communication module is automatically selected as the active wireless module. Based on the selection result, the power supply of the inactive wireless module is first cut off via an independent control pin, and then the power supply of the active wireless module is turned on to achieve mutually exclusive power-on.

[0007] In some implementations, the main control chip is specifically configured as follows: When the battery power is lower than the first preset threshold, the second wireless communication module is forcibly selected as the active wireless module. When the battery power is higher than or equal to the first preset threshold and the amount of data to be transmitted is higher than the second preset threshold, the first wireless communication module is selected as the active wireless module. Otherwise, select the second wireless communication module as the active wireless module.

[0008] In some implementations, the first preset threshold and / or the second preset threshold are fixed thresholds or dynamic thresholds that can be dynamically adjusted based on historical data or usage patterns.

[0009] In some implementations, the main control chip is directly connected to the hardware enable pin or power enable pin of the first wireless communication module and the second wireless communication module via a separate control pin.

[0010] In some implementations, the main control chip controls the power supply switching by controlling the MOSFET switching circuit connected to the first wireless communication module and the second wireless communication module.

[0011] Secondly, the present invention provides an automatic switching method for dual-mode wireless transmission in a portable brain-computer interface device. This method is based on the aforementioned dual-mode wireless transmission system for the portable brain-computer interface device and includes at least the following steps: S1. Initialization: The main control chip controls both the first and second wireless communication modules to be in a power-off state. S2. Data Acquisition and Caching: EEG data is acquired through the EEG acquisition chip, and the main control chip continuously reads the EEG data from the EEG acquisition chip and caches it in a designated memory area. S3. Status monitoring: The main control chip monitors at least one system status parameter in real time. The system status parameters include at least the battery level and the amount of data to be transmitted. S4. Decision: Based on system status parameters, the main control chip automatically selects to enable the first wireless communication module or the second wireless communication module as the active wireless module. S5. Power control: Based on the results of the decision-making steps, first cut off the power supply to the inactive wireless module, and then turn on the power supply to the active wireless module. S6. Data transmission and loop: After the active wireless module is powered on, the main control chip establishes a communication connection with it and immediately begins to transmit the cached data. During the transmission process, the system continues to return to step S3 for status monitoring.

[0012] In some implementations, the decision-making step in step S4 specifically includes: When the battery level is lower than the first preset threshold, the second wireless communication module is forcibly selected as the active wireless module. When the battery power is higher than or equal to the first preset threshold and the amount of data to be transmitted is higher than the second preset threshold, the first wireless communication module is selected as the active wireless module. Otherwise, select the second wireless communication module as the active wireless module.

[0013] In some implementations, in step S5, after the power supply to the inactive wireless module is cut off, a delay period is inserted to ensure that the inactive wireless module is completely powered off before the power supply to the active wireless module is turned on.

[0014] In some implementations, step S6 further includes: Connection failure fallback steps: When the active wireless module fails to connect to the main control chip, it automatically switches to another wireless module and retryes, while recording the error log.

[0015] In some implementations, the system status parameters in step S3 may include at least one of user activity status, network connection status, signal strength, or external commands; the decision-making step may also automatically select the active wireless module based on user activity status, network connection status, signal strength, or external commands.

[0016] Thirdly, the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the above-described method for automatic switching of dual-mode wireless transmission in a portable brain-computer interface device.

[0017] The beneficial effects of this invention include: 1. Fully automatic and intelligent: Enables seamless switching of transmission modes, improving user experience and device usability; 2. Extreme power consumption control: Through the hardware power-off mechanism, any power consumption of idle communication modules is eliminated, which is an effect that software hibernation cannot achieve, greatly reducing the system's standby power consumption; 3. Adaptability and Reliability: The decision-making mechanism based on dynamic thresholds enables the device to prioritize data transmission efficiency when the battery is high and to prioritize battery life when the battery is low, thereby enhancing the device's adaptability and reliability under different operating conditions. 4. Extended battery life: The integrated intelligent switching and complete power-off technology significantly extends the working time of portable EEG devices after a single charge.

[0018] In summary, the dual-mode wireless transmission system and automatic switching method of the portable brain-computer interface device of the present invention have many advantages, such as high intelligence, low power consumption, strong adaptability and reliability, and extended battery life. Attached Figure Description

[0019] Figure 1 This is a hardware architecture block diagram of the dual-mode wireless transmission system of the portable brain-computer interface device provided in Embodiment 1 of the present invention.

[0020] Figure 2 A schematic diagram of wearing one type of portable brain-computer interface device that integrates the dual-mode wireless transmission system of the present invention and is capable of running the dual-mode wireless transmission automatic switching method of the present invention; Figure 3 This is an overall workflow diagram of the dual-mode wireless transmission automatic switching method for a portable brain-computer interface device as shown in Embodiment 1 of the present invention.

[0021] Figure 4 yes Figure 3 The flowchart shown is a further refinement of the automatic switching method for dual-mode wireless transmission.

[0022] Figure 5This is a hardware architecture block diagram of the dual-mode wireless transmission system of the portable brain-computer interface device provided in Embodiment 2 of the present invention.

[0023] Figure reference numerals: 101-Main control chip; 102-EEG acquisition chip; 103-First wireless communication module; 104-Second wireless communication module; 105-Motion sensor. Detailed Implementation

[0024] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0025] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0026] Example 1 Please see Figures 1-4 The present invention provides a dual-mode wireless transmission system and an automatic switching method for a portable brain-computer interface device according to the following embodiments. It belongs to the field of brain-computer interface technology and is applicable to application scenarios of EEG signal acquisition, processing and wireless transmission. It can overcome the problems of lack of intelligence, insufficient power consumption optimization and poor adaptability in the prior art.

[0027] Please see Figure 1 The diagram shown is a system hardware architecture block diagram of a dual-mode wireless transmission system for a portable brain-computer interface device according to a preferred embodiment of the present invention.

[0028] This dual-mode wireless transmission system can be integrated into portable brain-computer interface devices (such as EEG acquisition devices). For specific implementation details, please refer to [link / reference needed]. Figure 2 .

[0029] like Figure 1As shown, the dual-mode wireless transmission system of this portable brain-computer interface device is based on a main control chip 101 (e.g., STM32F405). The main control chip 101 is connected to an EEG acquisition chip 102 (e.g., ADS1299) via an SPI bus for acquiring EEG signals. The main control chip 101 is also connected to a first wireless communication module 103 (e.g., a BW16 Wi-Fi module) via an SPI / USART bus, and to a second wireless communication module 104 (e.g., an NRF52840 BLE module) via an SPI bus.

[0030] The main control chip's two general-purpose I / O ports, GPIO_BW16 and GPIO_NRF52840, are directly connected to the hardware enable pins of BW16 and NRF52840, respectively. By controlling the high and low levels of these two pins, the power supply to the corresponding module can be directly controlled, achieving hardware-level power-off.

[0031] The main control chip 101 is configured as follows: Real-time monitoring of at least one system status parameter, which includes at least battery level and the amount of data to be transmitted; Based on system status parameters, the first wireless communication module 103 or the second wireless communication module 104 is automatically selected as the active wireless module. Based on the selection result, the power supply to the inactive wireless module is first cut off via an independent control pin, and then the power supply to the active wireless module is turned on, so as to achieve mutually exclusive power-on.

[0032] As a preferred embodiment, the main control chip 101 is specifically configured as follows: When the battery level is lower than the first preset threshold, the second wireless communication module 104 is forcibly selected as the active wireless module. When the battery power is higher than or equal to the first preset threshold and the amount of data to be transmitted is higher than the second preset threshold, the first wireless communication module 103 is selected as the active wireless module. Otherwise, the second wireless communication module 104 is selected as the active wireless module.

[0033] Preferably, the first preset threshold and / or the second preset threshold are fixed thresholds or dynamic thresholds that can be dynamically adjusted based on historical data or usage patterns.

[0034] Preferably, the main control chip 101 is directly connected to the hardware enable pin or power enable pin of the first wireless communication module 103 and the second wireless communication module 104 via an independent control pin.

[0035] Preferably, the main control chip 101 controls the power supply by controlling the MOSFET switching circuit connected to the first wireless communication module 103 and the second wireless communication module 104.

[0036] refer to Figure 2 The diagram shows the basic flowchart of the automatic switching method for dual-mode wireless transmission in the portable brain-computer interface device of the present invention, and its operating logic is as follows: S1. Initialization: The main control chip 101 controls both the first wireless communication module 103 and the second wireless communication module 104 to be in a power-off state. S2. Data Acquisition and Caching: EEG data is acquired through the EEG acquisition chip 102, and the main control chip 101 continuously reads the EEG data from the EEG acquisition chip 102 and caches it in a designated memory area. S3. Status monitoring: The main control chip 101 monitors at least one system status parameter in real time. The system status parameter includes at least the battery level and the amount of data to be transmitted. S4. Decision: Based on the system status parameters, the main control chip 101 automatically selects to enable the first wireless communication module 103 or the second wireless communication module 104 as the active wireless module. S5. Power control: Based on the results of the decision-making steps, first cut off the power supply to the inactive wireless module, and then turn on the power supply to the active wireless module. S6. Data transmission and loop: After the active wireless module is powered on, the main control chip 101 establishes a communication connection with it and immediately begins to transmit the cached data. During the transmission process, the system continues to return to step S3 for status monitoring.

[0037] refer to Figure 3 The diagram shows a flowchart of an automatic switching method for dual-mode wireless transmission in a portable brain-computer interface device according to a preferred embodiment of the present invention. This automatic switching method is implemented by an embedded software program running on the main control chip, and its flow is as follows: S1. Initialization: After the system starts, the main control chip 101 sets both GPIO_BW16 and GPIO_NRF52840 to low level to ensure that both the first wireless communication module 103 and the second wireless communication module 104 are completely powered off.

[0038] S2. Data Acquisition and Caching: The main control chip 101 continuously reads multi-channel EEG data from the EEG acquisition chip 102 through the SPI interface and caches it in a designated memory area (such as internal memory).

[0039] S3, Status Monitoring and Decision Making: The main control chip 101 monitors at least one system status parameter in real time, which includes at least the battery level and the amount of data to be transmitted. The specific monitoring method is as follows: The status monitoring main control chip 101 periodically (e.g., once per second) reads the ADC value of the battery voltage and converts it into the remaining power percentage Bat_level by looking up a table or calculating.

[0040] At the same time, monitor the fill rate (used length / total length) of the data cache queue Data_queue.

[0041] S4. Decision: Based on the system status parameters, the main control chip 101 automatically selects to enable the first wireless communication module 103 or the second wireless communication module 104 as the active wireless module. The specific steps for decision-making are as follows: First judgment level (to ensure battery life): If the battery level is lower than the first preset threshold, for example, Bat_level < 15% (low battery threshold), then regardless of the amount of data, in order to maximize battery life, the system will force the selection of Bluetooth mode and select the second wireless communication module 104 as the active wireless module.

[0042] Second judgment level (performance assurance): If the battery level is higher than or equal to the first preset threshold, the surface power is sufficient (e.g., Bat_level ≥ 15%), then the data queue is further judged. If the amount of data to be transmitted is higher than the second preset threshold, for example, Data_queue > 70% (high data volume threshold), it indicates that high-speed transmission is required to avoid data loss or delay. At this time, the system selects Wi-Fi mode and selects the first wireless communication module 103 as the active wireless module.

[0043] Default strategy (optimized power consumption): If none of the above conditions are met, the Bluetooth mode with lower power consumption will be selected.

[0044] S5, Power Control: If the decision determines to maintain the current mode (i.e., the active wireless module remains unchanged) and the active wireless module is already powered on, no action is required. Once the decision is made to switch modes (or maintain the current mode but the selected active wireless module is not powered on), the main control chip 101 will execute strict power sequence control, the specific steps of which are as follows: First, pull the enable pin of the currently inactive wireless module low (if it has not already been pulled low). Next, the program inserts a 50ms software delay to ensure that the capacitors inside the powered-off module are fully discharged, achieving a complete shutdown. Finally, pull the enable pin of the active wireless module high to power it on. This sequence is crucial to avoid instantaneous current overshoot and mutual interference that could occur if two active and inactive wireless modules are powered on simultaneously.

[0045] S6. Data Transmission and Loop: After the active wireless module is powered on and initialized, the main control chip 101 establishes a communication connection with it and begins transmitting the buffered data. During the transmission process, the system returns to step S3 for status monitoring, achieving dynamic and adaptive closed-loop control.

[0046] Preferably, step S6 further includes: Connection failure fallback steps: When the active wireless module fails to connect to the main control chip 101, it automatically switches to another wireless module and retryes, while recording the error log.

[0047] The present invention also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of the dual-mode wireless transmission automatic switching method for the portable brain-computer interface device described above.

[0048] For a description of the computer-readable storage medium provided by the present invention, please refer to the above method embodiments; the present invention will not be described again here.

[0049] Example 2 Please see Figure 5 The diagram shows a schematic representation of another embodiment of the dual-mode wireless transmission system and automatic switching method of the portable brain-computer interface device of the present invention. Its structure and principle are basically the same as those of the dual-mode wireless transmission system and automatic switching method of the portable brain-computer interface device in Embodiment 1 above, except that it also includes a motion sensor 105; the system status parameters also include the user's activity status.

[0050] Specifically, the dual-mode wireless transmission system of the portable brain-computer interface device also includes a motion sensor 105 connected to the main control chip 101 via an I2C bus. The motion sensor 105 is preferably an inertial measurement unit (IMU chip).

[0051] The trigger decision based on user activity status is as follows: the motion sensor 105 monitors whether the user is in motion. If the user is in motion, they tend to use Bluetooth, which has a more stable connection (hypothetical scenario), while Wi-Fi can be used when the user is stationary.

[0052] Furthermore, it should be noted that the present invention also has the following alternatives: 1. Expanded Decision Parameters: System status parameters are not limited to battery level, data volume, or user activity status. For example, Wi-Fi signal strength (RSSI) can be introduced, allowing a fallback to Bluetooth when the signal is extremely weak.

[0053] 2. Dynamic Threshold Adjustment: While the 15% and 70% thresholds can be fixed, a better approach is to design them for dynamic adjustment to enhance adaptability. For example, dynamically adjust the low-power threshold based on the device's recent average power consumption, or automatically lower the high-data-volume threshold during network congestion to trigger high-speed mode earlier.

[0054] 3. Power control alternative: In addition to directly controlling the enable pin of the module, the main control chip 101 can also switch the power path of the module by controlling an external MOSFET switching circuit, with the same effect.

[0055] 4. The main control chip 101 is not limited to STM32F405; any microcontroller with multiple low-power modes and rich peripheral interfaces (such as other ARM Cortex-M series chips) can implement this solution. The EEG acquisition chip 102102 is not limited to ADS1299; any multi-channel, high-precision ADC that supports digital instruction control of its operating mode (including sleep mode) can be used.

[0056] The dual-mode wireless transmission system and automatic switching method of the portable brain-computer interface device of the present invention have at least the following advantages over the prior art: 1. Fully automatic and intelligent: Enables seamless switching of transmission modes, improving user experience and device usability; 2. Extreme power consumption control: Through the hardware power-off mechanism, any power consumption of idle communication modules is eliminated, which is an effect that software hibernation cannot achieve, greatly reducing the system's standby power consumption; 3. Adaptability and Reliability: The decision-making mechanism based on dynamic thresholds enables the device to prioritize data transmission efficiency when the battery is high and to prioritize battery life when the battery is low, thereby enhancing the device's adaptability and reliability under different operating conditions. 4. Extended battery life: The integrated intelligent switching and complete power-off technology significantly extends the working time of portable EEG devices after a single charge.

[0057] In summary, the dual-mode wireless transmission system and automatic switching method of the portable brain-computer interface device of the present invention have many advantages, such as high intelligence, low power consumption, strong adaptability and reliability, and extended battery life.

[0058] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A dual-mode wireless transmission system for a portable brain-computer interface device, characterized in that, It includes a main control chip (101), an EEG acquisition chip (102) connected to the main control chip (101), a first wireless communication module (103), and a second wireless communication module (104). The transmission bandwidth and power consumption of the first wireless communication module (103) are higher than those of the second wireless communication module (104). The main control chip (101) is configured as follows: Real-time monitoring of at least one system status parameter, which includes at least battery level and amount of data to be transmitted; Based on the system status parameters, the first wireless communication module (103) or the second wireless communication module (104) is automatically selected as the active wireless module. Based on the selection result, the power supply of the inactive wireless module is first cut off via an independent control pin, and then the power supply of the active wireless module is turned on to achieve mutually exclusive power-on.

2. The dual-mode wireless transmission system for the portable brain-computer interface device according to claim 1, characterized in that, The main control chip (101) is specifically configured as follows: When the battery power is lower than the first preset threshold, the second wireless communication module (104) is forcibly selected as the active wireless module; When the battery power is higher than or equal to the first preset threshold and the amount of data to be transmitted is higher than the second preset threshold, the first wireless communication module (103) is selected as the active wireless module. Otherwise, the second wireless communication module (104) is selected as the active wireless module.

3. The dual-mode wireless transmission system for the portable brain-computer interface device according to claim 2, characterized in that, The first preset threshold and / or the second preset threshold are fixed thresholds or dynamic thresholds that can be dynamically adjusted based on historical data or usage patterns.

4. The dual-mode wireless transmission system for the portable brain-computer interface device according to claim 1, characterized in that, The main control chip (101) is directly connected to the hardware enable pin or power enable pin of the first wireless communication module (103) and the second wireless communication module (104) through the independent control pin.

5. The dual-mode wireless transmission system for the portable brain-computer interface device according to claim 1, characterized in that, The main control chip (101) controls the MOSFET switching circuit connected to the first wireless communication module (103) and the second wireless communication module (104) to switch the power supply on and off.

6. A method for automatic switching of dual-mode wireless transmission in a portable brain-computer interface device, implemented based on the dual-mode wireless transmission system of the portable brain-computer interface device according to any one of claims 1-5, characterized in that, The method includes at least the following steps: S1. Initialization: The main control chip (101) controls both the first wireless communication module (103) and the second wireless communication module (104) to be in a power-off state; S2, Data Acquisition and Caching: EEG data is acquired through the EEG acquisition chip (102), and the main control chip (101) continuously reads the EEG data from the EEG acquisition chip (102) and caches it in a specified memory area; S3. Status monitoring: The main control chip (101) monitors at least one system status parameter in real time, and the system status parameter includes at least the battery power and the amount of data to be transmitted; S4. Decision: Based on the system status parameters, the main control chip (101) automatically selects to enable the first wireless communication module (103) or the second wireless communication module (104) as the active wireless module. S5. Power control: Based on the results of the decision-making steps, first cut off the power supply to the inactive wireless module, and then turn on the power supply to the active wireless module. S6. Data transmission and loop: After the active wireless module is powered on, the main control chip (101) establishes a communication connection with it and immediately begins to transmit the cached data. During the transmission process, the system continues to return to step S3 for status monitoring.

7. The automatic switching method for dual-mode wireless transmission in the portable brain-computer interface device according to claim 6, characterized in that, The decision-making steps in step S4 specifically include: When the battery power is lower than the first preset threshold, the second wireless communication module (104) is forcibly selected as the active wireless module; When the battery power is higher than or equal to the first preset threshold and the amount of data to be transmitted is higher than the second preset threshold, the first wireless communication module (103) is selected as the active wireless module. Otherwise, the second wireless communication module (104) is selected as the active wireless module.

8. The automatic switching method for dual-mode wireless transmission in a portable brain-computer interface device as described in claim 6, characterized in that, In step S5, after the power supply to the inactive wireless module is cut off, a delay period is inserted to ensure that the inactive wireless module is completely powered off before the power supply to the active wireless module is turned on.

9. The automatic switching method for dual-mode wireless transmission in a portable brain-computer interface device as described in claim 6, characterized in that, Step S6 also includes: Connection failure fallback steps: When the active wireless module fails to connect to the main control chip (101), it automatically switches to another wireless module and retryes, while recording the error log.

10. The automatic switching method for dual-mode wireless transmission of the portable brain-computer interface device according to claim 6, characterized in that, The system status parameters in step S3 also include at least one of user activity status, network connection status, signal strength, or external commands; the decision-making step further automatically selects the active wireless module based on the user activity status, network connection status, signal strength, or external commands.

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