A brain-computer interface controlled space-sensing spacesuit system

Abstract

This invention discloses a brain-computer interface (BCI) controlled spacesuit system. The system includes: a brain-computer signal acquisition module for acquiring and transmitting the astronaut's electroencephalogram (EEG) signals; a spacesuit multi-dimensional sensing module for simultaneously acquiring and uploading the astronaut's physiological data and spacesuit environmental data; a central control processing module configured to preprocess, extract features, and interpret intent from the EEG signals, and combine this with physiological / environmental data to determine legality, generate, and issue legal control commands; a spacesuit execution module for receiving the control commands and executing corresponding control actions; and a closed-loop tactile feedback module that continuously outputs tactile feedback based on the execution results to achieve closed-loop brain-computer interface control. Its advantages include: reducing the difficulty and delay of extravehicular activities, forming a complete closed-loop link, achieving data fusion and collaborative control, and effectively improving safety redundancy.

Description

Technical Field

[0001] This invention relates to the field of aerospace operation equipment technology, specifically to a brain-computer interface and multi-dimensional sensing integrated space-sensing spacesuit system with brain-computer interaction control. Background Technology

[0002] Manned spaceflight extravehicular activities rely on extravehicular spacesuits for life support and operational tasks. Existing traditional spacesuits and preliminary brain-computer interface solutions have the following practical engineering shortcomings:

[0003] 1. Operation relies on manual panels, mechanical switches, and pressurized gloves. Limb movement is restricted under microgravity, resulting in cumbersome operation and high response delay.

[0004] 2. Existing brain-computer interfaces combined with spacesuits only achieve brainwave signal acquisition, without forming a complete closed-loop control link of acquisition, analysis, command, execution and feedback, and the operation lacks confirmation and traceability;

[0005] 3. The physiological monitoring, environmental perception and equipment control of the spacesuit are each independent subsystems, and data fusion and collaborative control have not been achieved, resulting in insufficient safety redundancy. Summary of the Invention

[0006] In view of the technical deficiencies in the prior art, the purpose of this invention is to provide a brain-computer interface controlled space-sensing spacesuit system, which aims to at least partially solve one of the technical problems in the related art.

[0007] To achieve the above objectives, the present invention provides a brain-computer interface controlled space-sensing spacesuit system, the system comprising a brain-computer signal acquisition module, a spacesuit multi-dimensional sensing module, a central control processing module, a spacesuit execution module, and a closed-loop tactile feedback module;

[0008] The brain-computer interface signal acquisition module is used to acquire the astronaut's electroencephalogram (EEG) signals and transmit them to the central control and processing module.

[0009] The spacesuit's multi-dimensional sensing module is used to simultaneously collect and upload astronaut physiological data and spacesuit environmental data;

[0010] The central control processing module is configured as follows:

[0011] The system preprocesses, extracts, and interprets EEG signals, and combines physiological / environmental data to determine legality, generating and issuing legal control commands.

[0012] The spacesuit execution module is used to receive the control commands and execute the corresponding control actions;

[0013] The closed-loop tactile feedback module always outputs tactile feedback based on the execution result to achieve closed-loop brain-computer interaction control.

[0014] Preferably, the brain-computer interface signal acquisition module includes a flexible dry electrode EEG acquisition unit, a head inertial measurement unit, and an electromagnetic shielding unit;

[0015] The flexible dry electrode EEG acquisition unit is used to acquire motor imagery signals and steady-state visual evoked potential signals; the head inertial measurement unit is used to synchronously acquire posture data and remove head motion artifacts; the electromagnetic shielding unit is used to resist spatial electromagnetic interference.

[0016] Preferably, the multi-dimensional sensing module of the spacesuit includes a physiological sensing unit and an environmental sensing unit; the physiological sensing unit collects electrocardiogram, respiration and body temperature; the environmental sensing unit collects internal pressure, internal temperature and space radiation dose.

[0017] Preferably, the central control processing module is specifically used for:

[0018] The collected EEG signals were preprocessed to remove noise and motion artifacts;

[0019] Extract effective feature values ​​from EEG signals and match them with a preset instruction library to complete control intention recognition;

[0020] By combining the physiological data with the spacesuit environmental data, the legality of the command is determined.

[0021] If the verification passes, a standard control command is generated and sent to the spacesuit execution module; if the verification fails, the command is blocked and an alarm is triggered.

[0022] Preferably, the legality determination is as follows: when both the physiological data and the environmental data are within the normal range, the instruction is legal and issued; if any data is abnormal, the instruction is blocked and an alarm is triggered.

[0023] Preferably, the closed-loop tactile feedback module is arranged on the shoulder and forearm of the spacesuit, and provides feedback on three states: command reception, successful execution, and execution error, through differentiated vibrations.

[0024] Preferably, the central control processing module is also used to support on-orbit calibration, the calibration content of which includes: EEG electrode impedance detection, signal threshold calibration, and instruction library matching parameter update.

[0025] The brain-computer interface controlled spacesuit system provided in this invention significantly reduces the difficulty and delay of extravehicular activities by replacing manual operation with contactless brain-computer control, overcoming cumbersome operation. Simultaneously, it forms a complete closed-loop chain, providing real-time tactile feedback on execution results, and ensuring that commands are verifiable and traceable, thus improving operational reliability. Furthermore, by combining physiological / environmental data fusion and verification, it automatically blocks dangerous commands in abnormal states, achieving data fusion and collaborative control, effectively enhancing safety redundancy. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below.

[0027] Figure 1 This is a schematic diagram of a brain-computer interface controlled space-sensing spacesuit system provided in an embodiment of the present invention;

[0028] Figure 2 This is a schematic block diagram of a brain-computer interface signal acquisition module provided in an embodiment of the present invention;

[0029] Figure 3 This is a flowchart of the central control processing module in an embodiment of the present invention. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0032] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0033] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0034] refer to Figures 1 to 3The present invention provides a brain-computer interface controlled space-sensing spacesuit system, the system comprising a brain-computer signal acquisition module, a spacesuit multi-dimensional sensing module, a central control processing module, a spacesuit execution module, a closed-loop tactile feedback module, and a space-grade environment adaptation module;

[0035] The brain-computer interface signal acquisition module is used to acquire the astronaut's electroencephalogram (EEG) signals and transmit them to the central control and processing module.

[0036] The spacesuit's multi-dimensional sensing module is used to simultaneously collect and upload astronaut physiological data and spacesuit environmental data;

[0037] The central control processing module is configured as follows:

[0038] The system preprocesses, extracts, and interprets EEG signals, and combines physiological / environmental data to determine legality, generating and issuing legal control commands.

[0039] The spacesuit execution module is used to receive the control commands and execute the corresponding control actions;

[0040] The closed-loop tactile feedback module always outputs tactile feedback based on the execution result to achieve closed-loop brain-computer interaction control.

[0041] Furthermore, the brain-computer signal acquisition module includes a flexible dry electrode EEG acquisition unit, a head inertial measurement unit, and an electromagnetic shielding unit;

[0042] The flexible dry electrode EEG acquisition unit is used to acquire motor imagery signals and steady-state visual evoked potential signals; the head inertial measurement unit is used to synchronously acquire posture data and remove head motion artifacts; the electromagnetic shielding unit is used to resist spatial electromagnetic interference.

[0043] That is, astronauts generate EEG signals through motion imagination or steady-state visual stimulation, and the head-mounted brain-computer interface signal acquisition module acquires the signals with 32 channels of flexible dry electrodes, while the head inertial measurement unit simultaneously acquires attitude data for artifact removal.

[0044] In practice, the multi-dimensional sensing module of the spacesuit includes a physiological sensing unit and an environmental sensing unit; the physiological sensing unit collects electrocardiogram, respiration and body temperature; the environmental sensing unit collects the pressure inside the suit, the temperature inside the suit and the space radiation dose.

[0045] The central control processing module is specifically used for:

[0046] The collected EEG signals were preprocessed to remove noise and motion artifacts;

[0047] Extract effective feature values ​​from EEG signals and match them with a preset instruction library to complete control intention recognition;

[0048] By combining the physiological data with the spacesuit environmental data, the legality of the command is determined.

[0049] If the verification passes, a standard control command is generated and sent to the spacesuit execution module; if the verification fails, the command is blocked and an alarm is triggered.

[0050] The preprocessing includes sequentially performing pre-amplification, bandpass filtering, and power frequency notch filtering on the EEG signal, and then combining the data from the head inertial measurement unit to remove motion artifacts.

[0051] The motion imagery signal is processed using a common spatial mode (CSP).

[0052] The feature extraction includes:

[0053] Preprocessed EEG signals are segmented according to fixed time windows;

[0054] Extract time-domain amplitude, frequency-domain power spectrum, and SSVEP dominant frequency energy characteristics;

[0055] Filter high-discrimination features and generate feature vectors;

[0056] SSVEP signal feature extraction includes:

[0057] Perform a Fast Fourier Transform (FFT) on a single-channel signal;

[0058] Extract the peak power spectrum and harmonic energy at the stimulation frequency points;

[0059] After normalization, a frequency eigenvector is formed.

[0060] The intent parsing includes:

[0061] Perform similarity matching between the feature vectors and the instruction library templates;

[0062] The instruction with the highest similarity is selected as the recognition result;

[0063] Output standardized control intent codes.

[0064] Specifically, the feature vector is first input into a pre-trained LDA classifier;

[0065] Calculate the projection distance between the features and various instruction templates;

[0066] The category with the smallest distance is determined to be the target intent, and the instruction code is output.

[0067] If the confidence level is below the threshold, the system will refuse to recognize the data and return an invalid instruction.

[0068] The legality determination is as follows: when both the physiological data and the environmental data are within the normal range, the instruction is legal and issued; if any data is abnormal, the instruction is blocked and an alarm is triggered.

[0069] The spacesuit's execution module interfaces with the spacesuit's life support, lighting, communication, ventilation, and audible and visual alarm devices, and performs parameter adjustment and on / off control.

[0070] In this embodiment, the closed-loop tactile feedback module is arranged on the shoulder and forearm of the spacesuit, and provides feedback on three states: command reception, execution success, and execution error, through differentiated vibrations.

[0071] The above solution significantly reduces the difficulty and delay of extravehicular operations by using contactless brain-computer interface control instead of manual operation, overcoming the cumbersome nature of the operation. At the same time, it forms a complete closed-loop link, with real-time tactile feedback on execution results, and the commands are verifiable and traceable, improving the reliability of operation. Furthermore, by combining physiological / environmental data fusion and verification, it automatically blocks dangerous commands in abnormal states, achieving data fusion and collaborative control, and effectively improving safety redundancy.

[0072] In another embodiment, based on the above technical solution, the central control processing module is also used to support on-orbit calibration, the calibration content of which includes: EEG electrode impedance detection, signal threshold calibration, and instruction library matching parameter update.

[0073] In this embodiment, EEG acquisition calibration includes detecting electrode impedance, adjusting signal gain and threshold, and optimizing signal acquisition accuracy;

[0074] Command library calibration includes updating command matching parameters and improving intent recognition accuracy;

[0075] Sensor calibration includes calibrating the parameters acquired by physiological and environmental sensor units and ensuring data stability;

[0076] Once calibration is complete, the central control processing module outputs calibration completion feedback, and the system returns to normal control mode.

[0077] Those skilled in the art will recognize that the units and steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of each example have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the invention. In the several embodiments provided in this application, it should be understood that the disclosed system can be implemented in other ways. For example, the system embodiments described above are merely illustrative. For instance, the division of modules is merely a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. The above descriptions are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention.

Claims

1. A brain-computer interface controlled space-sensing spacesuit system, characterized in that, The system includes a brain-computer signal acquisition module, a spacesuit multi-dimensional sensing module, a central control and processing module, a spacesuit execution module, and a closed-loop tactile feedback module. The brain-computer interface signal acquisition module is used to acquire the astronaut's electroencephalogram (EEG) signals and transmit them to the central control and processing module. The spacesuit's multi-dimensional sensing module is used to simultaneously collect and upload astronaut physiological data and spacesuit environmental data; The central control processing module is configured as follows: The system preprocesses, extracts, and interprets EEG signals, and combines physiological / environmental data to determine legality, generating and issuing legal control commands. The spacesuit execution module is used to receive the control commands and execute the corresponding control actions; The closed-loop tactile feedback module always outputs tactile feedback based on the execution result to achieve closed-loop brain-computer interaction control.

2. The brain-computer interface controlled space-sensing spacesuit system as described in claim 1, characterized in that, The brain-computer interface signal acquisition module includes a flexible dry electrode EEG acquisition unit, a head inertial measurement unit, and an electromagnetic shielding unit. The flexible dry electrode EEG acquisition unit is used to acquire motor imagery signals and steady-state visual evoked potential signals; the head inertial measurement unit is used to synchronously acquire posture data and remove head motion artifacts; the electromagnetic shielding unit is used to resist spatial electromagnetic interference.

3. The brain-computer interface controlled space-sensing spacesuit system as described in claim 2, characterized in that, The spacesuit's multi-dimensional sensing module includes a physiological sensing unit and an environmental sensing unit; the physiological sensing unit collects electrocardiogram, respiration, and body temperature; the environmental sensing unit collects internal pressure, internal temperature, and space radiation dose.

4. A brain-computer interface controlled space-sensing spacesuit system as described in claim 3, characterized in that, The central control processing module is specifically used for: The collected EEG signals were preprocessed to remove noise and motion artifacts; Extract effective feature values ​​from EEG signals and match them with a preset instruction library to complete control intention recognition; By combining the physiological data with the spacesuit environmental data, the legality of the command is determined. If the verification passes, a standard control command is generated and sent to the spacesuit execution module; if the verification fails, the command is blocked and an alarm is triggered.

5. A brain-computer interface controlled space-sensing spacesuit system as described in claim 4, characterized in that, The legality judgment is as follows: when both the physiological data and the environmental data are within the normal range, the instruction is legal and issued; if any data is abnormal, the instruction is blocked and an alarm is triggered.

6. A brain-computer interface controlled space-sensing spacesuit system as described in claim 4, characterized in that, The closed-loop tactile feedback module is located on the shoulders and forearms of the spacesuit, and provides feedback on three states—command reception, successful execution, and execution error—through differentiated vibrations.

7. A brain-computer interface controlled space-sensing spacesuit system as described in claim 4, characterized in that, The central control processing module is also used to support on-orbit calibration, which includes: EEG electrode impedance detection, signal threshold calibration, and instruction library matching parameter updates.

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