Active breath-synchronized guidance method and system based on an olfactory stimulator

Abstract

The application discloses an active respiratory synchronization guiding method based on an olfactory stimulator, which is applied to an olfactory stimulation system, wherein the olfactory stimulation system comprises a respiratory frequency sensor, an olfactory stimulator and a respiratory guiding audio-visual device, the respiratory frequency sensor, respiratory guiding software and a device are simultaneously used to realize the method, and bus communication is used between the devices; aiming at the difference of respiratory frequencies of different testers, a respiratory frequency detection sensor is used, the tester's respiratory frequency is collected before the test, and a guiding frequency is set according to the respiratory frequency; an active respiratory guiding mode is used, through the coordination between the devices, each stimulation can be realized in the time period when the tester inhales under the guidance of the respiratory guiding interface; a special respiratory guiding audio-visual device is designed to realize the communication function with other devices and the guiding interface function; the visual guiding interface can be designed into a breathing guiding picture and an added concentration video to guide the breathing and improve the concentration.

Description

Technical Field

[0001] This invention belongs to the field of olfactory stimulation-guided breathing technology, specifically relating to an active breathing synchronization guidance method and system based on an olfactory stimulator. Background Technology

[0002] The key and core technology of olfactory evoked potential devices lies in the olfactory stimulator. Existing stimulators are divided into synchronized respiratory stimulators (i.e., bromine stimulation and inhalation are synchronized) and asynchronous stimulators (i.e., a stable flow rate directly delivers bromine to the olfactory region, with passive stimulation). The advantage of synchronized respiratory stimulators is that they more closely resemble natural breathing, as bromine is inhaled and stimulated during inhalation. The disadvantage is that the stimulation intensity is often insufficient, and the consistency of stimulation is uncontrollable (determined by the test subject's breathing). Asynchronous stimulators, on the other hand, offer high stimulation intensity and controllable consistency, but the disadvantage is poor test subject cooperation, requiring velopharyngeal closure and oral breathing. Existing stimulators cannot achieve focused testing. Furthermore, since respiratory rate varies depending on age, gender, health status, and physical condition, using a universal average respiratory cycle for respiratory guidance will cause breathing discomfort in some test subjects, making it difficult to concentrate on the experiment and even endangering their health. Summary of the Invention

[0003] The purpose of this invention is to provide an active breathing synchronization guidance method and system based on an olfactory stimulator to solve the aforementioned problems in the prior art. It combines asynchronous intensity and stimulus consistency with the natural breathing stimulation and inspiratory synchronicity of synchronous stimulation, and can also successfully achieve focus testing.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] The first aspect of this invention provides an active respiratory synchronization guidance method based on an olfactory stimulator, applied to an olfactory stimulation system. The olfactory stimulation system includes a respiratory rate sensor, an olfactory stimulator, and a respiratory guidance audio-visual device. Both the respiratory rate sensor and the olfactory stimulator are communicatively connected to the respiratory guidance audio-visual device. The method includes the following steps:

[0006] The respiratory rate detection sensor collects the natural respiratory rate of the test subject in a calm state, obtains natural respiratory rate information, and transmits the natural respiratory rate information to the breathing guidance audio-visual device;

[0007] The breathing guidance audio-visual device receives natural breathing frequency information from the breathing frequency detection sensor and obtains the guidance frequency based on the natural breathing frequency information.

[0008] The olfactory stimulator begins to pre-execute the pre-programmed breathing stimulation sequence and sets the test parameters. After the olfactory stimulator completes the test parameter settings, it obtains the olfactory stimulation synchronization information and transmits the olfactory stimulation synchronization information to the breathing guidance audio-visual device.

[0009] The breathing guidance audio-visual device receives the synchronization information from the olfactory stimulator, sends the guidance frequency to the olfactory stimulator, and activates the pre-stored visual guidance interface to guide the test subject to breathe according to the interface prompts.

[0010] The olfactory stimulator receives the guidance frequency from the breathing guidance audio-visual device and, based on the time collected by the internal timer of the olfactory stimulator, stimulates the subject with the test gas during the inhalation period prompted by the breathing guidance interface. This allows the subject to adjust their breathing rhythm according to the guidance frequency and interface prompts, ensuring that the subject receives stimulation during inhalation, i.e., stimulation and inhalation are synchronized. After the breathing stimulation sequence is completed, the olfactory stimulator sends a termination command to the breathing guidance audio-visual device.

[0011] The breathing guidance audio-visual device prompts the experimenter to end the experiment after receiving the end command from the olfactory stimulator.

[0012] Based on the aforementioned technology, the experiment is implemented using an olfactory stimulator, and simultaneously aided by a respiratory rate sensor, breathing guidance software, and other equipment. The devices can communicate with each other via an RS485 bus. To address the differences in respiratory rates among different participants, a respiratory rate detection sensor is used to collect the participants' respiratory rates before the experiment, and this data is used to set the guidance frequency, ensuring the participants' comfort during the experiment. Since the olfactory stimulator needs to warm up before the experiment to stabilize the airflow channel, respiratory rate collection does not increase the total experiment time and helps participants enter the state earlier. An active breathing guidance method is used, and through coordination between devices, each stimulation occurs within the time period during which the breathing guidance interface guides the participant to inhale. A dedicated breathing guidance audio-visual device is designed to provide both communication with other devices and a guidance interface. The visual guidance interface can be designed as inhalation and exhalation maps, as well as addable focus videos, to guide breathing and improve concentration.

[0013] Preferably, the subject's brainwave signals are collected using an EEG acquisition device while inhaling and receiving stimulation. The olfactory evoked potential (OEP) stimulation results need to be analyzed for event-related potentials (ERPs). Since OEPs are related to cognitive factors, the subject needs to remain focused during the test. By collecting the subject's EEG signals while inhaling and receiving stimulation, the activity level of the subject's EEG signals can be observed, facilitating the determination of whether the subject is maintaining a focused state.

[0014] Preferably, before the method begins execution, the olfactory stimulator and the breathing guidance audio-visual device are synchronized in time, with the synchronization time set to t0. Execution begins from t0, and the breathing guidance audio-visual device starts detecting the subject's breathing rate over a period T. h To guide the subject's breathing during the guided cycle, time t0 was set as the midpoint of the inspiratory phase of the breathing cycle, and the time parameter T was simultaneously sent to the olfactory stimulator. h The olfactory stimulator received parameter T. h Then, the test parameters were preset, and the timer was started simultaneously. Once the olfactory stimulator had completed the test parameter settings and the airflow channel was determined to be stable, the timing time t was satisfied. j For T h When the stimulus is an integer multiple, the stimulus is applied.

[0015] Preferably, the visual guidance interface includes one or more of interface animation, video, and text to prompt the test subject, guide breathing, and focus.

[0016] A second aspect of the present invention provides an active respiratory synchronization guidance system based on an olfactory stimulator, comprising a respiratory rate sensor, an olfactory stimulator, and a respiratory guidance audio-visual device, wherein the respiratory rate sensor and the olfactory stimulator are both communicatively connected to the respiratory guidance audio-visual device; wherein,

[0017] The respiratory rate detection sensor is used to collect the natural respiratory rate of the test subject in a calm state, obtain natural respiratory rate information, and transmit the natural respiratory rate information to the breathing guidance audio-visual device.

[0018] The breathing guidance audio-visual device is used to receive natural breathing frequency information transmitted from the breathing frequency detection sensor and obtain a guidance frequency based on the natural breathing frequency information.

[0019] The olfactory stimulator is used to pre-execute a pre-programmed respiratory stimulation sequence and set test parameters. After the olfactory stimulator completes the test parameter setting, it obtains olfactory stimulation synchronization information and transmits the olfactory stimulation synchronization information to the respiratory guidance audio-visual device.

[0020] The breathing guidance audio-visual device is used to receive olfactory stimulation synchronization information from the olfactory stimulator, send the guidance frequency to the olfactory stimulator, and activate a pre-stored visual guidance interface to guide the test subject to breathe according to the interface prompts.

[0021] The olfactory stimulator is used to receive the guidance frequency sent by the breathing guidance audio-visual device, and according to the time collected by the internal timer of the olfactory stimulator, to stimulate the subject with the test gas during the inhalation period prompted by the breathing guidance interface; so that the subject can adjust the breathing rhythm according to the guidance frequency and interface prompts, so that the subject receives stimulation during inhalation, that is, stimulation and inhalation are synchronized; when the breathing stimulation sequence is completed, the olfactory stimulator sends an end command to the breathing guidance audio-visual device.

[0022] The breathing guidance audio-visual device is used to receive the end command sent by the olfactory stimulator and prompt the experimenter to end the experiment.

[0023] Preferably, the system further includes an EEG acquisition device, which is used to acquire the subject's EEG signals while the subject is receiving stimulation during inhalation.

[0024] A third aspect of the present invention provides an active respiratory synchronization guidance method based on an olfactory stimulator, applied to a respiratory guidance audio-visual device communicatively connected to a respiratory rate sensor and an olfactory stimulator; the guidance device includes a motherboard, a display, and a memory, the display and the memory being respectively connected to the motherboard, and the memory being provided with a visual guidance interface storage unit; the method includes:

[0025] The motherboard receives the natural breathing rate information from the breathing rate detection sensor and obtains the guiding frequency based on the natural breathing rate information.

[0026] The motherboard receives the synchronization information from the olfactory stimulator, sends the guidance frequency to the olfactory stimulator, and reads the visual guidance interface pre-stored in the visual guidance interface storage unit, and plays it on the display so as to guide the test subject to breathe according to the interface prompts.

[0027] After receiving the end command from the olfactory stimulator, the motherboard terminates the visual guidance interface and reads the end prompt interface for the experimenter that was pre-stored in the visual guidance interface storage unit, and plays it on the display to guide the experimenter to end the experiment.

[0028] Preferably, the visual guidance interface storage unit and the stored visual guidance interface include one or more of interface animation, video and text to prompt the test subject, guide breathing and focus.

[0029] Beneficial Effects: This method utilizes an olfactory stimulator, along with a respiratory rate sensor, breathing guidance software, and auxiliary equipment. The devices communicate via an RS485 bus. To address the differences in respiratory rates among participants, a respiratory rate detection sensor is used to collect data before the experiment, setting the guidance frequency accordingly to ensure participant comfort. Since the olfactory stimulator requires preheating to stabilize the airflow channel, respiratory rate data collection does not increase the total experiment time and helps participants enter the optimal state earlier. The active breathing guidance method, through coordination between devices, ensures that each stimulation occurs within the timeframe guided by the breathing guidance interface for inhalation. A dedicated breathing guidance audio-visual device is designed to provide both communication with other devices and a guidance interface. The visual guidance interface can be designed as inhalation and inhalation maps, as well as addable focus videos to guide breathing and improve concentration. By collecting the participant's brainwave signals simultaneously with inhalation and stimulation, the activity of the brainwave signals can be observed, facilitating the determination of whether the participant is maintaining focus. Attached Figure Description

[0030] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0031] Figure 1 This is a schematic diagram of the active breathing synchronization guidance method based on an olfactory stimulator provided in the embodiment.

[0032] Figure 2 This is a schematic diagram of an implementation of the olfactory stimulation system in the example. Detailed Implementation

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the present invention will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is for the purpose of helping to understand the present invention, but does not constitute a limitation of the present invention.

[0034] Example:

[0035] like Figure 1 , Figure 2As shown, the first aspect of this embodiment provides an active respiratory synchronization guidance method based on an olfactory stimulator, applied to an olfactory stimulation system. The olfactory stimulation system includes a respiratory rate sensor, an olfactory stimulator, and a respiratory guidance audio-visual device. The respiratory guidance audio-visual device can be, but is not limited to, executed by a computer device with certain computing resources, such as a personal computer (PC, referring to a multi-purpose computer of size, price, and performance suitable for personal use; desktop computers, laptops, mini-laptops, tablets, and ultrabooks all belong to personal computers), a smartphone, a personal digital assistant (PAD), or a platform server, etc. The respiratory rate sensor, olfactory stimulator, and respiratory guidance audio-visual device are communicatively connected, and the respiratory rate sensor and olfactory stimulator are also communicatively connected. Specifically, the respiratory rate sensor, olfactory stimulator, and respiratory guidance audio-visual device are communicatively connected via an RS485 serial bus.

[0036] S1. The respiratory rate detection sensor collects the natural respiratory rate of the test subject in a calm state, obtains natural respiratory rate information, and transmits the natural respiratory rate information to the breathing guidance audio-visual device; specifically, the respiratory rate sensor collects the respiratory rate of the test subject in a natural state for 0.5-1 minutes, and uses this to set the guidance frequency to ensure the comfort of the test subject during the experiment; S1. The respiratory rate detection sensor collects the natural respiratory rate of the test subject in a calm state, obtains natural respiratory rate information, and transmits the natural respiratory rate information to the breathing guidance audio-visual device;

[0037] S2. The breathing guidance audio-visual device receives the natural breathing frequency information transmitted by the breathing frequency detection sensor, and obtains the guidance frequency based on the natural breathing frequency information;

[0038] S3. The olfactory stimulator begins to pre-execute the pre-programmed breathing stimulation sequence and sets the test parameters. After the olfactory stimulator completes the test parameter settings, it obtains olfactory stimulation synchronization information, which is the synchronization stimulation frequency information based on the breathing frequency. The olfactory stimulation synchronization information is then transmitted to the breathing guidance audio-visual device. Since the olfactory stimulator needs to be preheated before the test to stabilize the airflow channel, the breathing frequency acquisition will not increase the total test time and will help the test subject enter the state earlier.

[0039] S4. The breathing guidance audio-visual device receives the synchronization information from the olfactory stimulator, sends the guidance frequency to the olfactory stimulator, and activates the pre-stored visual guidance interface. Specifically, the visual guidance interface is an audio-visual video generated based on the synchronization information. The video contains corresponding animations and sounds to guide the test subject to breathe according to the interface prompts.

[0040] S5. The olfactory stimulator receives the guidance frequency from the breathing guidance audio-visual device, and according to the time collected by the internal timer of the olfactory stimulator, stimulates the subject with the test gas during the inhalation period prompted by the breathing guidance interface; so that the subject can adjust the breathing rhythm according to the guidance frequency and interface prompts, so that the subject receives stimulation during inhalation, that is, stimulation and inhalation are synchronized; when the breathing stimulation sequence is completed, the olfactory stimulator sends an end command to the breathing guidance audio-visual device.

[0041] S6. After receiving the end command from the olfactory stimulator, the breathing guidance audio-visual device prompts the experimenter to end the experiment.

[0042] In practice, it is understood that the aforementioned execution entity does not constitute a limitation on the embodiments of this application. Accordingly, the operation steps of this method may be, but are not limited to, the steps S1 to S6 described above.

[0043] In one possible implementation, the experimenter receives stimulation while inhaling, and the experimenter's brain signals are collected using an EEG acquisition device.

[0044] In one possible implementation, before execution begins, the olfactory stimulator and the breathing guidance audio-visual device are synchronized in time, with the synchronization time set to t0. Execution begins from t0, and the breathing guidance audio-visual device starts detecting the subject's breathing rate over a period T. h To guide the subject's breathing during the guided cycle, time t0 was set as the midpoint of the inspiratory phase of the breathing cycle, and the time parameter T was simultaneously sent to the olfactory stimulator. h The olfactory stimulator received parameter T. h Then, the test parameters were preset, and the timer was started simultaneously. Once the olfactory stimulator had completed the test parameter settings and the airflow channel was determined to be stable, the timing time t was satisfied. j For T h When the stimulus is an integer multiple, the stimulus is applied.

[0045] In one possible implementation, the visual guidance interface includes one or more of interface animations, videos, and text to prompt, guide breathing, and focus the experimenter.

[0046] A second aspect of this embodiment provides an active respiratory synchronization guidance system based on an olfactory stimulator, including a respiratory rate sensor, an olfactory stimulator, and a respiratory guidance audio-visual device, wherein both the respiratory rate sensor and the olfactory stimulator are communicatively connected to the respiratory guidance audio-visual device; wherein...

[0047] The respiratory rate detection sensor is used to collect the natural respiratory rate of the test subject in a calm state, obtain natural respiratory rate information, and transmit the natural respiratory rate information to the breathing guidance audio-visual device.

[0048] The breathing guidance audio-visual device is used to receive natural breathing frequency information transmitted from the breathing frequency detection sensor and obtain a guidance frequency based on the natural breathing frequency information.

[0049] The olfactory stimulator is used to pre-execute a pre-programmed respiratory stimulation sequence and set test parameters. After the olfactory stimulator completes the test parameter setting, it obtains olfactory stimulation synchronization information and transmits the olfactory stimulation synchronization information to the respiratory guidance audio-visual device.

[0050] The breathing guidance audio-visual device is used to receive olfactory stimulation synchronization information from the olfactory stimulator, send the guidance frequency to the olfactory stimulator, and activate a pre-stored visual guidance interface so as to guide the test subject to breathe according to the interface prompts.

[0051] The olfactory stimulator is used to receive the guidance frequency sent by the breathing guidance audio-visual device, and according to the time collected by the internal timer of the olfactory stimulator, to stimulate the subject with the test gas during the inhalation period prompted by the breathing guidance interface; so that the subject can adjust the breathing rhythm according to the guidance frequency and interface prompts, so that the subject receives stimulation during inhalation, that is, stimulation and inhalation are synchronized; when the breathing stimulation sequence is completed, the olfactory stimulator sends an end command to the breathing guidance audio-visual device.

[0052] The breathing guidance audio-visual device is used to receive the end command sent by the olfactory stimulator and prompt the experimenter to end the experiment.

[0053] In one possible implementation, the system further includes an EEG acquisition device for acquiring the subject's brain signals while the subject is being stimulated during inhalation.

[0054] The third aspect of this embodiment provides an active respiratory synchronization guidance method based on an olfactory stimulator, applied to a respiratory guidance audio-visual device communicatively connected to a respiratory rate sensor and an olfactory stimulator; the guidance device includes a motherboard, a display, and a memory, the display and the memory being respectively connected to the motherboard, and the memory having a visual guidance interface storage unit; the method includes:

[0055] The motherboard receives the natural breathing rate information from the breathing rate detection sensor and obtains the guiding frequency based on the natural breathing rate information.

[0056] The motherboard receives the synchronization information from the olfactory stimulator, sends the guidance frequency to the olfactory stimulator, and reads the visual guidance interface pre-stored in the visual guidance interface storage unit, and plays it on the display so as to guide the test subject to breathe according to the interface prompts.

[0057] After receiving the end command from the olfactory stimulator, the motherboard terminates the visual guidance interface and reads the end prompt interface for the experimenter that was pre-stored in the visual guidance interface storage unit, and plays it on the display to guide the experimenter to end the experiment.

[0058] For a specific example, the visual guidance interface storage unit and the stored visual guidance interface include one or more of interface animations, videos and text to prompt the test subject, guide breathing and focus.

[0059] This fourth aspect of the embodiment provides a computer-readable storage medium storing instructions for an active respiratory synchronization guidance method based on an olfactory stimulator, as described in the third aspect of the embodiment. Specifically, the computer-readable storage medium stores instructions that, when executed on a computer, perform the active respiratory synchronization guidance method based on an olfactory stimulator as described in the third aspect. The computer-readable storage medium refers to a data storage medium, which may include, but is not limited to, floppy disks, optical disks, hard disks, flash memory, USB flash drives, and / or Memory Sticks. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.

[0060] The fifth aspect of this embodiment provides a computer program product containing instructions that, when executed on a computer, cause the computer to perform an active respiratory synchronization guidance method based on an olfactory stimulator as described in the third aspect of this embodiment, wherein the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.

[0061] The embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0062] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., including several instructions to cause a repository code merging device to execute the methods of various embodiments or some parts of the embodiments.

[0063] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for active respiratory synchronization guidance based on an olfactory stimulator, characterized in that, An olfactory stimulation system is applied, the system comprising a respiratory rate sensor, an olfactory stimulator, and a respiratory guidance audio-visual device, wherein the respiratory rate sensor and the olfactory stimulator are both communicatively connected to the respiratory guidance audio-visual device, and the method comprises the following steps: The respiratory rate detection sensor collects the natural respiratory rate of the test subject in a calm state, obtains natural respiratory rate information, and transmits the natural respiratory rate information to the breathing guidance audio-visual device; The breathing guidance audio-visual device receives natural breathing frequency information from the breathing frequency detection sensor and obtains the guidance frequency based on the natural breathing frequency information. The olfactory stimulator begins to pre-execute a pre-programmed respiratory stimulation sequence and sets experimental parameters in order to generate olfactory stimulation synchronization information based on the set experimental parameters, and transmits the olfactory stimulation synchronization information to the respiratory guidance audio-visual device. The breathing guidance audio-visual device receives the olfactory stimulation synchronization information from the olfactory stimulator, sends the guidance frequency to the olfactory stimulator, and activates the pre-stored physical stimulation to guide the test subject to breathe according to the interface prompts. The olfactory stimulator receives the guidance frequency from the breathing guidance audio-visual device and, based on the time collected by the internal timer of the olfactory stimulator, stimulates the subject with the test gas during the inhalation period prompted by the breathing guidance interface. This allows the subject to adjust their breathing rhythm according to the guidance frequency and interface prompts, ensuring that the subject receives stimulation during inhalation, achieving synchronization between stimulation and inhalation. After the breathing stimulation sequence is completed, the olfactory stimulator sends a termination command to the breathing guidance audio-visual device. The breathing guidance audio-visual device prompts the experimenter to end the experiment after receiving the end command from the olfactory stimulator.

2. The active respiratory synchronization guidance method based on an olfactory stimulator according to claim 1, characterized in that, While the subject inhaled and received stimulation, the subject's brain signals were collected using an EEG acquisition device.

3. The active respiratory synchronization guidance method based on an olfactory stimulator according to claim 1, characterized in that, Before execution, the olfactory stimulator and the respiratory guidance audio-visual device are synchronized at time t0. Execution begins at time t0, with the respiratory guidance audio-visual device starting to detect the subject's breathing rate over a period T. h To guide the subject's breathing during the guided cycle, time t0 was set as the midpoint of the inspiratory phase of the breathing cycle, and the time parameter T was simultaneously sent to the olfactory stimulator. h The olfactory stimulator receives the time parameter T. h Then, the test parameters are preset and the timer is turned on. When the olfactory stimulator has completed the test parameter setting and the airflow channel has been stabilized, and the timing time tj is an integer multiple of Th, the stimulation is performed.

4. The active respiratory synchronization guidance method based on an olfactory stimulator according to claim 1, characterized in that, The breathing guidance interface includes one or more of the following: interface animation, video, and text, to prompt, guide breathing, and help the test subject focus.

5. An active respiratory synchronization guidance system based on an olfactory stimulator, characterized in that, It includes a respiratory rate sensor, an olfactory stimulator, and a respiratory guidance audio-visual device, wherein the respiratory rate sensor and the olfactory stimulator are both communicatively connected to the respiratory guidance audio-visual device; wherein, The respiratory rate detection sensor is used to collect the natural respiratory rate of the test subject in a calm state, obtain natural respiratory rate information, and transmit the natural respiratory rate information to the breathing guidance audio-visual device. The breathing guidance audio-visual device is used to receive natural breathing frequency information transmitted from the breathing frequency detection sensor and obtain a guidance frequency based on the natural breathing frequency information. The olfactory stimulator is used to pre-execute a pre-programmed respiratory stimulation sequence and set experimental parameters so as to generate olfactory stimulation synchronization information according to the set experimental parameters and transmit the olfactory stimulation synchronization information to the respiratory guidance audio-visual device. The breathing guidance audio-visual device is used to receive olfactory stimulation synchronization information from the olfactory stimulator, send the guidance frequency to the olfactory stimulator, and activate a pre-stored visual guidance interface to guide the test subject to breathe according to the interface prompts. The olfactory stimulator is used to receive the guidance frequency sent by the breathing guidance audio-visual device, and according to the time collected by the internal timer of the olfactory stimulator, to stimulate the subject with the test gas during the inhalation period prompted by the breathing guidance interface; so that the subject can adjust the breathing rhythm according to the guidance frequency and interface prompts, so that the subject receives stimulation during inhalation, that is, stimulation and inhalation are synchronized; when the breathing stimulation sequence is completed, the olfactory stimulator sends an end command to the breathing guidance audio-visual device. The breathing guidance audio-visual device is used to receive the end command sent by the olfactory stimulator and prompt the experimenter to end the experiment.

6. The active respiratory synchronization guidance system based on an olfactory stimulator according to claim 5, characterized in that, The system also includes an EEG acquisition device, which is used to acquire the subject's EEG signals while the subject is being stimulated during inhalation.

7. An active breathing synchronization guidance method based on an olfactory stimulator, applied to the active breathing synchronization guidance system based on an olfactory stimulator as described in claim 5, characterized in that... A respiratory guidance audio-visual device is applied to a respiratory rate sensor and an olfactory stimulator in communication; the guidance audio-visual device includes a motherboard, a display, and a memory, the display and the memory being respectively connected to the motherboard, and the memory having a visual guidance interface storage unit; the method includes: The motherboard receives the natural breathing rate information from the breathing rate detection sensor and obtains the guiding frequency based on the natural breathing rate information. The motherboard receives the olfactory stimulation synchronization information from the olfactory stimulator, sends the guidance frequency to the olfactory stimulator, and reads the visual guidance interface pre-stored in the visual guidance interface storage unit, and plays it on the display so as to guide the test subject to breathe according to the interface prompts. After receiving the end command from the olfactory stimulator, the motherboard terminates the visual guidance interface and reads the end prompt interface for the experimenter that was pre-stored in the visual guidance interface storage unit, and plays it on the display to guide the experimenter to end the experiment.

8. The active respiratory synchronization guidance method based on an olfactory stimulator according to claim 7, characterized in that, The visual guidance interface storage unit and the stored visual guidance interface include one or more of the following: interface animation, video, and text, to prompt the test subject, guide breathing, and focus.

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