CN220757818U - Electroencephalogram control system and electroencephalogram control equipment - Google Patents

Electroencephalogram control system and electroencephalogram control equipment Download PDF

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CN220757818U
CN220757818U CN202321643085.6U CN202321643085U CN220757818U CN 220757818 U CN220757818 U CN 220757818U CN 202321643085 U CN202321643085 U CN 202321643085U CN 220757818 U CN220757818 U CN 220757818U
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stimulation
module
electroencephalogram
acquisition
electrode
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胡斌
赵庆林
方钇霖
崔琨博
蒋花
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Lanzhou University
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Lanzhou University
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Abstract

The utility model provides an electroencephalogram regulating system and an electroencephalogram regulating device. Wherein, brain electricity regulation and control system includes: the device comprises an electroencephalogram acquisition module, an impedance detection module, a transcranial electric stimulation module, a temperature detection module and a display processing module, wherein the electroencephalogram acquisition module and the impedance detection module are connected, and the display processing module is respectively connected with the electroencephalogram acquisition module, the impedance detection module and the transcranial electric stimulation module; the temperature detection module is used for collecting temperature; the transcranial electric stimulation module is used for releasing the stimulation current and stopping releasing the stimulation current when the temperature is greater than a preset temperature threshold; the brain electric acquisition module is used for synchronously acquiring brain wave signals when the transcranial electric stimulation module releases stimulation current; the impedance detection module is used for detecting the impedance value of the electroencephalogram acquisition module; the display processing module is used for receiving and displaying the transmitted information and prompting the first user to reduce the impedance value when the impedance value is larger than a preset impedance threshold value. The device provided by the utility model can improve the reliability and safety when being used for electroencephalogram acquisition and transcranial electric stimulation.

Description

Electroencephalogram control system and electroencephalogram control equipment
Technical Field
The utility model relates to the technical field of health management, in particular to an electroencephalogram regulation system and electroencephalogram regulation equipment.
Background
Nerve modulation methods can be classified into invasive and non-invasive, and invasive nerve modulation methods require surgical implantation of electrodes into a patient, and are more risky and non-invasive methods are not required, so non-invasive nerve modulation methods are favored over invasive nerve modulation methods.
Non-invasive neuromodulation generally requires the use of an electroencephalographic modulation device to aid in patient recovery. Firstly, an electroencephalogram acquisition device in electroencephalogram regulation equipment acquires electroencephalogram information of a patient, an operator analyzes the electroencephalogram information after the acquisition is completed, then a required electric stimulation type is selected, and the electric stimulation is carried out on the surface layer of the skull of the patient through a transcranial electric stimulation device in nerve regulation treatment equipment, so that the rehabilitation of the patient is helped.
The existing brain electricity regulating and controlling equipment often has the problem of losing brain electricity information under transcranial electric stimulation, so that the reliability of the equipment is not high; in addition, because transcranial electrical stimulation can raise the temperature of the cerebral cortex of the human body near the stimulation electrode, potential safety hazards exist when the time is long, and the safety of equipment is not high, a new brain electrical regulation and control equipment is needed to solve the problems.
Disclosure of Invention
In view of the above, the present utility model provides an electroencephalogram control system and an electroencephalogram control apparatus for improving reliability and safety of the apparatus.
To achieve the above object, in a first aspect, an embodiment of the present utility model provides an electroencephalogram control system, including: the device comprises an electroencephalogram acquisition module, an impedance detection module, a transcranial electric stimulation module, a temperature detection module and a display processing module, wherein the electroencephalogram acquisition module and the impedance detection module are connected, and the display processing module is respectively connected with the electroencephalogram acquisition module, the impedance detection module and the transcranial electric stimulation module;
the temperature detection module is used for collecting temperature and sending the temperature to the display processing module through the transcranial electric stimulation module;
the transcranial electric stimulation module is used for releasing stimulation current and stopping releasing the stimulation current when the temperature is greater than a preset temperature threshold;
the electroencephalogram acquisition module is used for synchronously acquiring brain wave signals when the transcranial electric stimulation module releases stimulation current;
the impedance detection module is used for detecting the impedance value of the electroencephalogram acquisition module;
the display processing module is used for receiving and displaying the brain wave signals, the impedance values, the stimulation current and the temperature, and prompting a first user to reduce the impedance values when the impedance values are larger than a preset impedance threshold.
As an optional implementation manner of the embodiment of the present utility model, the display processing module sends a release instruction to the transcranial electric stimulation module and sends an acquisition instruction to the electroencephalogram acquisition module;
the release instruction is used for indicating the transcranial electric stimulation module to release the stimulation current according to preset stimulation parameters; the acquisition instruction is used for instructing the electroencephalogram acquisition module to acquire the electroencephalogram signals.
As an optional implementation manner of the embodiment of the present utility model, the display processing module is further configured to compare the temperature with the preset temperature threshold, and send a stop instruction to the transcranial electric stimulation module when the temperature is greater than the preset temperature threshold, where the stop instruction is used to instruct the transcranial electric stimulation module to stop releasing the stimulation current.
As an optional implementation manner of the embodiment of the present utility model, the electroencephalogram acquisition module includes an electroencephalogram acquisition electrode and an acquisition chip, and the acquisition chip is respectively connected with the electroencephalogram acquisition electrode, the impedance detection module and the display processing module;
the electroencephalogram acquisition electrode is used for being in contact with the scalp of the second user;
the acquisition chip is used for receiving the acquisition instruction and acquiring the brain wave signals through the brain electricity acquisition electrode;
The impedance detection module is used for detecting the impedance value of the acquisition chip.
As an optional implementation manner of the embodiment of the present utility model, the electroencephalogram acquisition module further includes a first peripheral circuit, where the first peripheral circuit is connected to the electroencephalogram acquisition electrode and the acquisition chip respectively;
the first peripheral circuit is used for processing the brain wave signals and sending the processed brain wave signals to the acquisition chip;
the acquisition chip is used for sending the processed brain wave signals to the display processing module.
As an optional implementation manner of the embodiment of the present utility model, the transcranial electric stimulation module includes a stimulation electrode and a stimulation main control chip, where the stimulation main control chip is connected with the stimulation electrode, the temperature detection module and the display processing module, and the stimulation electrode is also connected with the temperature detection module;
the stimulating electrode is for contacting the scalp of the second user;
the stimulation main control chip is used for receiving the release instruction and releasing stimulation current through the stimulation electrode;
the temperature detection module is used for collecting the temperature of the scalp of the second user through the stimulation electrode and sending the temperature to the display processing module through the stimulation main control chip.
As an optional implementation manner of the embodiment of the present utility model, the transcranial electric stimulation module further includes a second peripheral circuit, where the second peripheral circuit is connected to the stimulation electrode and the stimulation master control chip respectively;
the stimulation main control chip is used for sending the preset stimulation parameters to the second peripheral circuit;
the second peripheral circuit is used for generating corresponding stimulation current according to the preset stimulation parameters and transmitting the corresponding stimulation current to the stimulation electrode.
As an optional implementation manner of the embodiment of the present utility model, the display processing module includes a digital isolation circuit, a power management module, a control chip, a storage unit, a transmission unit, and a display unit;
the digital isolation circuit is respectively connected with the electroencephalogram acquisition module, the impedance detection module, the transcranial electric stimulation module and the control chip, the control chip is also respectively connected with the power management module, the storage unit and the transmission unit, the power isolation circuit is respectively connected with the electroencephalogram acquisition module, the transcranial electric stimulation module and the power management module, and the transmission unit is connected with the display unit;
The display unit is used for receiving a first user operation and responding to the first user operation and sending the acquisition instruction and the release instruction;
the transmission unit is used for receiving and sending the acquisition instruction and the release instruction to the control chip;
the control chip is used for receiving and analyzing the acquisition instruction and the release instruction;
the digital isolation circuit is used for communication isolation of the brain wave signals and the stimulation current;
the control chip is also used for receiving and sending the brain wave signals, the impedance values and the temperature to the display unit through the transmission unit;
the storage unit is used for storing the brain wave signals;
the display unit is further used for displaying the brain wave signals, the impedance values, the temperature and the stimulation current;
the power isolation circuit is used for isolating the power management module from the electroencephalogram acquisition module and isolating the power management module from the transcranial electric stimulation module;
the power management module is used for providing electric energy for the control chip and the electroencephalogram acquisition module and the transcranial electric stimulation module through the power isolation circuit.
As an optional implementation manner of the embodiment of the present utility model, when the electroencephalogram acquisition module includes the acquisition chip, the connection between the digital isolation circuit and the electroencephalogram acquisition module includes: the digital isolation circuit is connected with the acquisition chip;
when the transcranial electrical stimulation module comprises the stimulation main control chip, the connection of the digital isolation circuit and the transcranial electrical stimulation module comprises: the digital isolation circuit is connected with the stimulation main control chip.
In a second aspect, an embodiment of the present utility model provides an electroencephalogram control apparatus, including: the brain electrical control system comprises a hairband, a left ear mastoid disposable electrode patch clamping groove, a start key, a shutdown key, a left ear mastoid disposable electrode patch, a right ear mastoid disposable electrode patch, a left ear mastoid disposable electrode patch electrode connecting end, a control device, an electroencephalogram acquisition disposable electrode patch, a stimulation electrode disposable electrode patch and the brain electrical control system in the first aspect;
the hair band comprises an electroencephalogram acquisition hair band and a transcranial electric stimulation hair band;
the left and right ear mastoid disposable electrode patch clamping groove, the start key and the shutdown key are positioned on the control device, and the control device is positioned on the side face of the transcranial electric stimulation hair band;
The left ear mastoid disposable electrode patch and the right ear mastoid disposable electrode patch are respectively connected with the electrode connecting ends of the left ear mastoid disposable electrode patch and the right ear mastoid disposable electrode patch, and the electrode connecting ends of the left ear mastoid disposable electrode patch and the right ear mastoid disposable electrode patch are connected with the clamping grooves of the left ear mastoid disposable electrode patch and the right ear mastoid disposable electrode patch;
the electroencephalogram acquisition electrode in the electroencephalogram regulation and control system is positioned on the electroencephalogram acquisition hair band, and the electroencephalogram acquisition disposable electrode patch is connected with the electroencephalogram acquisition electrode;
the stimulating electrode in the brain electricity regulating and controlling system is positioned on the transcranial electric stimulation hair band, and the disposable patch of the stimulating electrode is connected with the stimulating electrode.
The electroencephalogram regulation and control system and the electroencephalogram regulation and control equipment provided by the embodiment of the utility model, wherein the electroencephalogram regulation and control system comprises an electroencephalogram acquisition module and an impedance detection module which are connected, a transcranial electric stimulation module and a temperature detection module which are connected, and a display processing module which is respectively connected with the electroencephalogram acquisition module, the impedance detection module and the transcranial electric stimulation module; the temperature detection module is used for collecting the temperature and sending the temperature to the display processing module through the transcranial electric stimulation module; the transcranial electric stimulation module is used for releasing the stimulation current and stopping releasing the stimulation current when the temperature is greater than a preset temperature threshold; the brain electric acquisition module is used for synchronously acquiring brain wave signals when the transcranial electric stimulation module releases stimulation current; the impedance detection module is used for detecting the impedance value of the electroencephalogram acquisition module; the display processing module is used for receiving and displaying brain wave signals, impedance values, stimulation current and temperature, and prompting a first user to reduce the impedance values when the impedance values are larger than a preset impedance threshold. The device provided by the utility model can improve the reliability and safety when being used for electroencephalogram acquisition and transcranial electric stimulation.
Drawings
FIG. 1 is a schematic diagram of a structure of an electroencephalogram control system according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of another structure of an electroencephalogram control system according to an embodiment of the present utility model;
FIG. 3 is a schematic diagram of another embodiment of an electroencephalogram control system according to the present utility model;
fig. 4 is a schematic structural diagram of an electroencephalogram acquisition module according to an embodiment of the present utility model;
fig. 5 is a schematic structural diagram of a transcranial electrical stimulation module according to an embodiment of the present utility model;
FIG. 6 is a schematic diagram of a human noise model according to an embodiment of the present utility model;
FIG. 7 is a schematic diagram of the potential of the human cerebral cortex according to an embodiment of the present utility model;
FIG. 8 is a schematic diagram of another embodiment of an electroencephalogram control system according to the present utility model;
FIG. 9 is a schematic diagram of another embodiment of an electroencephalogram control system according to the present utility model;
fig. 10 is a schematic structural diagram of an electroencephalogram control device according to an embodiment of the present utility model;
fig. 11 is a schematic diagram of a display interface related to a display unit in a display processing module according to an embodiment of the present utility model.
Detailed Description
Embodiments of the present utility model will be described below with reference to the accompanying drawings in the embodiments of the present utility model. The terminology used in the description of the embodiments of the utility model is for the purpose of describing particular embodiments of the utility model only and is not intended to be limiting of the utility model.
When the existing brain electricity regulating and controlling equipment is used, the brain electricity collecting device and the transcranial electric stimulation device are required to be used independently, only brain electricity collection or transcranial electric stimulation can be carried out at a certain time, and synchronous use cannot be carried out, so that the existing brain electricity regulating and controlling equipment can not obtain brain electricity information generated by a tester at the same time when transcranial electric stimulation is carried out, or the brain electricity information under transcranial electric stimulation can be lost, and the reliability of the equipment is lower; and because the existing nerve regulation and control treatment equipment can cause the scalp of a human body to heat up when transcranial electric stimulation is carried out, potential safety hazards exist when the time is long, and therefore the safety of the equipment is low. In view of the above, the utility model provides an electroencephalogram control system and an electroencephalogram control device, wherein the electroencephalogram control system comprises an electroencephalogram acquisition module, a transcranial electric stimulation module, an impedance detection module and a temperature detection module, and the electroencephalogram acquisition module can synchronously acquire electroencephalogram information when the transcranial electric stimulation module performs electric stimulation, so that the electroencephalogram information under the transcranial electric stimulation is not lost; the impedance detection module can detect the impedance value of the electroencephalogram acquisition module in real time, and the reliability of the system can be improved; the temperature detection module starts to detect the temperature of the cerebral cortex of the human body when the transcranial electric stimulation module performs electric stimulation, and when the temperature exceeds a certain threshold value, the transcranial electric stimulation module stops releasing the stimulation current, so that the safety of the system can be improved. The device provided by the utility model can improve the reliability and safety when being used for electroencephalogram acquisition and transcranial electric stimulation.
The electroencephalogram regulation and control system provided by the embodiment of the utility model is described in detail below.
Fig. 1 is a schematic structural diagram of an electroencephalogram control system according to an embodiment of the present utility model, and as shown in fig. 1, the electroencephalogram control system may include an electroencephalogram acquisition module 10, an impedance detection module 20, a transcranial electric stimulation module 30, a temperature detection module 40, and a display processing module 50.
Specifically, the electroencephalogram acquisition module 10 is respectively connected with the impedance detection module 20 and the display processing module 50, and the electroencephalogram acquisition module 10 is used for synchronously acquiring brain wave signals when the transcranial electric stimulation module 30 releases stimulation current and transmitting the brain wave signals to the display processing module 50; the impedance detection module 20 is further connected to the display processing module 50, and is configured to detect an impedance value of the electroencephalogram acquisition module 10, and transmit the impedance value of the electroencephalogram acquisition module 10 to the display processing module 50; the transcranial electric stimulation module 30 is respectively connected with the temperature detection module 40 and the display processing module 50, the transcranial electric stimulation module 30 is used for releasing the stimulation current, and when the temperature is greater than a preset temperature threshold value, the transcranial electric stimulation module 30 stops releasing the stimulation current; the temperature detection module 40 is used for collecting the current temperature and sending the collected temperature to the display processing module 50 through the transcranial electrical stimulation module 30; the display processing module 50 is configured to receive and display an brain wave signal, an impedance value, a stimulus current, and a temperature, and prompt the first user to decrease the impedance value when the impedance value is greater than a preset impedance threshold.
The first user may be an operator, a doctor, a patient, or the like, and the embodiment of the present utility model is not particularly limited thereto. The method comprises the steps of prompting a user to reduce the impedance value when the impedance value is larger than a preset impedance threshold, and prompting the first user through alarming or displaying red fonts and the like.
The display processing module 50 sends a release instruction to the transcranial electrical stimulation module 30 and a collection instruction to the electroencephalogram collection module 10; the release instructions are used for instructing the transcranial electrical stimulation module 30 to release stimulation current according to preset stimulation parameters; the acquisition instructions are used for instructing the electroencephalogram acquisition module 10 to acquire brain wave signals.
The stimulation parameters may include, among other things, stimulation type, stimulation duration, stimulation frequency, stimulation current, etc. The stimulation types may be transcranial direct current stimulation (Transcranial Direct Current Stimulation, tDCS), transcranial alternating current stimulation (Transcranial Alternating Current Stimulation, tcacs), transcranial random noise stimulation (Transcranial Random Noise Stimulation, tRNS), etc., and for better therapeutic effect, the embodiments of the present utility model will be exemplified by the stimulation types tDCS and tcacs. The stimulation duration can be set according to the requirements. The stimulation current ranges from 1mA to 2mA, and can be set according to the requirements. The stimulation frequency is generally the same as the frequency of human brain wave signals, and can improve the stimulation effect, such as delta wave (0.5-3 Hz), theta wave (4-7 Hz), alpha wave (8-13 Hz), beta wave (14-30 Hz) and the like. The display processing module 50 is further configured to compare the temperature with a preset temperature threshold, and send a stop instruction to the transcranial electric stimulation module 30 when the temperature is greater than the preset temperature threshold, where the stop instruction is configured to instruct the transcranial electric stimulation module 30 to stop releasing the stimulation current.
The brain electrical control system can be used for treating depression, schizophrenia, obsessive-compulsive disorder and the like.
Taking a depression patient as an example, when the brain electric control system is used, the brain electric acquisition module 10 acquires brain electric wave signals of the brain of the patient, the acquired brain electric wave signals are transmitted to the display processing module 50, the display processing module 50 can display the brain electric wave signals of the current patient, and a doctor can know the severity degree of depression of the current patient by analyzing the brain electric wave signals. The impedance detection module 20 can detect the impedance value of the electroencephalogram acquisition module 10, and can transmit the acquired impedance value to the display processing module 50, the display processing module 50 displays the acquired impedance value in real time, when the impedance value is greater than a preset impedance threshold, the electroencephalogram signal acquisition of the electroencephalogram regulation and control system can be inaccurate, and a doctor can reduce the impedance by adjusting the position of the electroencephalogram acquisition module, so that the reliability of the electroencephalogram regulation and control treatment system is improved, and the accuracy of acquiring the electroencephalogram signal can be improved.
The transcranial electric stimulation module 30 can release stimulation current while collecting brain wave signals of a patient, and the patient can be guided and helped to recover through the stimulation current, so that synchronous brain wave collection and transcranial electric stimulation can be realized. When transcranial electrical stimulation is performed on the patient, the temperature detection module 40 detects the temperature of the patient's cerebral cortex and transmits the detected temperature of the patient's cerebral cortex to the display processing module 50, and the display processing module 50 may display the temperature of the patient's cerebral cortex. Since the long-time electrical stimulation causes the temperature of the cerebral cortex of the patient to rise, when the temperature exceeds a certain threshold, not only discomfort is caused to the body of the patient, but also damage is caused to equipment, and therefore, when the temperature exceeds a certain threshold, the transcranial electrical stimulation module 30 stops releasing the stimulation current, thereby improving the safety of the neuromodulation therapy system.
As an alternative embodiment, the electroencephalogram acquisition module 10 may include an acquisition circuit and an electroencephalogram acquisition electrode, and may also include an acquisition chip and an electroencephalogram acquisition electrode; transcranial electrical stimulation module 30 may include stimulation circuitry and stimulation electrodes, or may be a stimulation master chip and stimulation electrodes. In order to improve the integration level and reduce the volume of the device, the electroencephalogram acquisition module 10 is taken as an example and the electroencephalogram acquisition module 30 is taken as an example and the stimulation main control chip and the stimulation electrode are taken as an example for the following illustrative description.
Fig. 2 is another schematic structural diagram of a nerve modulation treatment system according to an embodiment of the present utility model, and as shown in fig. 2, the system may include an electroencephalogram acquisition module 10, an impedance detection module 20, a transcranial electrical stimulation module 30, a temperature detection module 40, and a display processing module 50.
Wherein, the electroencephalogram acquisition module 10 can comprise an acquisition chip 101 and an electroencephalogram acquisition electrode 102; the transcranial electrical stimulation module may include a stimulation master chip 301 and stimulation electrodes 302.
Specifically, the acquisition chip 101 is respectively connected with the electroencephalogram acquisition electrode 102, the impedance detection module 20 and the display processing module 50; the electroencephalogram acquisition electrode 102 is used for contacting with the scalp of the second user, and after receiving the instruction for starting acquisition sent by the display processing module 50, the acquisition chip 101 acquires brain wave signals of the human brain through the electroencephalogram acquisition electrode 102, and can output the acquired brain wave signals of the human brain to the display processing module 50.
The acquisition chip 101 may be an ADS1299, or may be another chip, which may be specifically selected as required. The acquisition chip 101 can implement various algorithms, such as data frequency domain transformation, a baseline shift removal algorithm based on a finite impulse response (Finite Impulse Response, FIR) high-pass filter, a proportional-integral-derivative control algorithm based on discrete wavelet transformation, an artifact removal algorithm based on adaptive noise cancellation improvement, and the like, and can improve the accuracy of acquired brain wave signals of the human brain.
The impedance detection module 20 may detect the impedance value on the acquisition chip 101 in real time, and may output the acquired impedance value to the display processing module 50. The impedance detection module 20 may be a chip AD5933, or may be another chip, and may be specifically selected according to needs.
The stimulation main control chip 301 is respectively connected with the stimulation electrode 302, the temperature detection module 40 and the display processing module 50, and the stimulation electrode 302 is also connected with the temperature detection module 40; the stimulation electrode 302 is for contact with the scalp of the second user; after receiving the instruction of starting the stimulation sent by the display processing module 50, the stimulation main control chip 301 releases the stimulation current through the stimulation electrode 302, and the magnitude of the stimulation current can be displayed on the display processing module 50 in real time.
The stimulus main control chip 301 may be STM32G474, or may be another chip, which may be specifically selected according to needs. The stimulus main control chip 301 can implement various algorithms, and can be written according to actual requirements.
The temperature detection module 40 is respectively connected with the stimulation electrode 302, the stimulation main control chip 301 and the display processing module 50, the temperature detection module 40 can detect the temperature of the human brain surface layer near the stimulation electrode 302 when the stimulation electrode 302 releases stimulation current, the detected temperature is transmitted to the display processing module 50, when the temperature exceeds a certain threshold value, the stimulation duration is overlong, the body of a current tester can be damaged, and the treatment effect can be affected at the same time, so that the display processing module 50 sends a command for stopping stimulation to the stimulation main control chip 301, and the stimulation main control chip 301 stops releasing stimulation current after receiving the command for stopping stimulation, thereby improving the safety of the system.
The temperature detection module 40 may include two temperature detection sensors, or may include three temperature detection sensors, which are not limited in this embodiment, and may be selected according to practical situations, and the temperature detection module 40 includes two temperature detection sensors, which are respectively located at two ends of the stimulation electrode 302, for example.
The display processing module 50 may display brain wave signals. Since brain wave signals record changes of electric waves during brain activities, mental problems may occur in patients, which may lead to decreased secretion of dopamine in the brain, so that doctors can timely learn about the conditions of the patients through brain wave.
The display processing module 50 may also display an impedance value in real time, where the impedance value is greater than a preset impedance threshold, and may affect quality and stability of signal transmission, so that the problem of inaccurate acquired information may be caused, and the first user may reduce the impedance value by adjusting a position of the electroencephalogram acquisition electrode on the scalp of the second user or adjusting a position between electrodes of the electroencephalogram acquisition electrode, and may further add a conductive paste or a frosting paste to the electroencephalogram acquisition electrode, so that the impedance value is less than or equal to the preset impedance threshold, and improve reliability of the system.
Wherein the second user is a tester, which may be the patient described above; it will be appreciated that when the use scenario of the electroencephalogram regulation system is home, both the first user and the second user are the patient themselves.
The display processing module 50 may also display the magnitude of the stimulus current, where the magnitude of the stimulus current represents the intensity of the stimulus scale, i.e., within a specified range, a larger stimulus current indicates a stronger stimulus level and a smaller stimulus current indicates a weaker stimulus level.
The display processing module 50 may also display the scalp temperature of the human body, and when the scalp temperature of the human body exceeds a certain temperature threshold, the stimulation duration is too long, which may cause damage to the body of the current tester, and may affect the therapeutic effect.
It can be understood that the two processes of the brain electrical stimulation and the acquisition of the brain electrical stimulation of the nerve modulation treatment system provided by the embodiment of the utility model can be performed independently or simultaneously, and can be performed sequentially, and the embodiment of the utility model is not particularly limited.
In order to make the brain wave signals acquired by the brain wave acquisition module 10 more accurate, as another alternative embodiment, the brain wave acquisition module 10 may further include a first peripheral circuit; in order to achieve better therapeutic effect of the stimulation current output by the transcranial electrical stimulation module 30, as an alternative embodiment, the transcranial electrical stimulation module 30 may further include a peripheral circuit.
Fig. 3 is a schematic diagram of another structure of a nerve modulation treatment system according to an embodiment of the present utility model, and as shown in fig. 3, the system may include an electroencephalogram acquisition module 10, an impedance detection module 20, a transcranial electrical stimulation module 30, a temperature detection module 40, and a display processing module 50.
Wherein, the electroencephalogram acquisition module 10 can comprise an acquisition chip 101, an electroencephalogram acquisition electrode 102 and a first peripheral circuit 103; transcranial electrical stimulation module 30 may include a stimulation master chip 301, stimulation electrodes 302, and a second peripheral circuit 303.
Specifically, the acquisition chip 101 is respectively connected with the electroencephalogram acquisition electrode 102, the first peripheral circuit 103, the impedance detection module 20 and the display processing module 50, the electroencephalogram acquisition electrode 102 is connected with the first peripheral circuit 103, and the impedance detection module 20 is connected with the display processing module 50; the stimulation main control chip 301 is respectively connected with the stimulation electrode 302, the second peripheral circuit 303, the temperature detection module 40 and the display processing module 50, the stimulation electrode 302 is connected with the temperature detection module 40, and the temperature detection module is connected with the display processing module 50.
After receiving the instruction of starting acquisition sent by the display processing module 50, the acquisition chip 101 acquires brain wave signals of the human brain through the acquisition electrode 102, and transmits the acquired brain wave signals of the human brain to the first peripheral circuit 103, the first peripheral circuit 103 processes the acquired brain wave signals of the human brain, such as amplification, filtering and the like, the first peripheral circuit 103 sends the processed brain wave signals of the human brain to the acquisition chip 101, the acquisition chip 101 sends the processed brain wave signals to the display processing module 50, and the display processing module 50 displays the processed brain wave signals.
After receiving the instruction for starting stimulation sent by the display processing module 50, the stimulation main control chip 301 sends preset stimulation parameters to the second peripheral circuit 303, and the second peripheral circuit 303 generates corresponding stimulation current according to the preset stimulation parameters and transmits the corresponding stimulation current to the stimulation electrode 302, and the stimulation electrode 302 releases the stimulation current.
The schematic structural diagram of the first peripheral circuit 103 may be referred to fig. 4, and fig. 4 is a schematic structural diagram of an electroencephalogram acquisition module according to an embodiment of the present utility model, as shown in fig. 4, an electroencephalogram acquisition module 10 may include an acquisition chip 101, an electroencephalogram acquisition electrode 102, and the first peripheral circuit 103.
The first peripheral circuit 103 may include an amplifying circuit 103A, a trap 103B, a right leg driving circuit 103C, and a processor 103D, wiFi E.
Specifically, the amplifying circuit 103A is connected to the right leg driving circuit 103C through the trap 103B, the right leg driving circuit 103C is further connected to the acquisition chip 101 through the processor 103D, the WiFi103 is connected to the acquisition chip 101, the acquisition chip 101 may be further connected to the power supply, the impedance detection module 20 and the digital isolation circuit 501, and the electroencephalogram acquisition electrode 102 is connected to the acquisition chip 101 and the amplifying circuit 103A, respectively.
The electroencephalogram collecting electrode 102 may include a plurality of electrodes, and for better collecting brain wave signals, three electrodes including a collecting electrode, a common electrode and a driving ground electrode are exemplified as the electroencephalogram collecting electrode 102.
In order to more clearly describe the acquisition of the brain electric acquisition electrode 102 to the human brain cortex potential, the embodiment of the utility model provides a potential schematic diagram of the human brain cortex, as shown in fig. 6, there are a plurality of potentials of the human brain cortex, and in order to achieve the best treatment effect, the embodiment of the utility model selects Fp1, fpz and Fp2 as the acquisition sites of the brain electric wave signals, and respectively corresponds to the acquisition electrode, the common electrode and the driving ground electrode. It will be appreciated that in other treatment regimens, the collection site may be other sites, and embodiments of the utility model are not particularly limited in this regard and may be selected according to the circumstances.
The electroencephalogram acquisition electrode 102 transmits the acquired electroencephalogram signals to the amplification circuit 103A, and the amplification circuit 103A amplifies the acquired electroencephalogram signals.
The acquired brain wave signals have power frequency interference, and in order to obtain more accurate brain wave information, the amplifying circuit 103A transmits the amplified brain wave signals to the filtering circuit for filtering. The filter circuit may include a trap and/or a right leg driver circuit. In order to achieve a better filtering effect, the embodiment of the present utility model is exemplified by taking the filter circuit including the trap 103B and the right leg driving circuit 103C as an example.
The trap 103B performs a filtering process on the amplified brain wave signal, and removes a power frequency interference signal from the brain wave signal. It is common knowledge for a person skilled in the art that the power frequency interference signal is 50 hertz (Hz), and therefore the filtering effect is best when the trap 103B is set to 50 Hz. However, in practical applications, the system is often affected by various factors, so the setting of the trap 103B may be lower than 50Hz or higher than 50Hz, as the case may be.
After being filtered by the wave trap 103B, a small amount of power frequency interference signals exist in the brain wave signals, in order to obtain brain wave signals with higher quality, a right leg driving circuit 103C is designed, and the right leg driving circuit 103C has a higher common mode rejection ratio and can filter out the rest power frequency interference signals.
In order to more clearly express the principle of the common mode rejection ratio, the embodiment of the utility model provides a schematic structural diagram of a human noise model, as shown in fig. 7, a voltage source Vs, a first capacitor C1, a second capacitor Cr, a third capacitor C, a fourth capacitor c+δc, a first resistor R, a second resistor r+δr, and an electroencephalogram acquisition system. The specific common mode rejection ratio calculation process is as follows:
Wherein K is CMRR Represents the common mode rejection ratio, R 1 Represents the resistance value of the first resistor R, C 3 Represents the capacitance value of the third capacitor C, δR represents the difference between the second resistor R+δR and the first resistor R, δC represents the difference between the fourth capacitor C+δC and the third capacitor, and f c Representing the frequency of the right leg driver circuit 103C at-3 dB (decibel), f represents the sampling frequency of the current system. By setting the resistance, capacitance and sampling frequency, the common mode rejection ratio can be set, and the higher the common mode rejection ratio is, the better the filtering effect is.
With continued reference to fig. 4, the brain wave signal after the residual power frequency interference signal is filtered by the right leg driving circuit 103C is an analog quantity, the processor 103D converts the analog quantity into a digital quantity, and at the same time, a wavelet transformation method is adopted to extract features of the brain wave signal, so that the acquisition chip 101 is convenient to read.
The extracted brain wave signals can be transmitted to the display processing module 50 through an infrared device, can be transmitted to the display processing module 50 through WiFi, can be transmitted to the display processing module 50 through other transmission equipment, and can be selected according to actual conditions. The embodiment of the present utility model is exemplified by transmitting the brain wave signal after feature extraction to the display processing module 50 through the WiFi 103E.
The WiFi103E can also receive an instruction for starting acquisition or stopping acquisition, and when the instruction for starting acquisition is received, the acquisition chip 101 acquires brain wave signals of a human body through the brain wave acquisition electrode 102; when receiving the instruction to stop acquisition, the acquisition chip 101 stops acquisition of brain wave signals of the human body.
The power supply is mainly used for providing electric energy for the acquisition chip 101, so that the acquisition chip 101 can work, and electric energy can be provided for the acquisition chip 101 through other devices and also can be directly provided. It can be understood that the power source may be an independent power source, and needs to be connected to a home power interface to provide electric energy to enable the acquisition chip 101 to start working; or an energy storage device integrated with the acquisition chip 101, so that the electric energy can be stored, and the portable electric energy tester is convenient to carry.
Referring to fig. 5, fig. 5 is a specific schematic structural diagram of a transcranial electric stimulation module according to an embodiment of the present utility model, and as shown in fig. 5, a transcranial electric stimulation module 30 may include a stimulation main control chip 301, a stimulation electrode 302, and a second peripheral circuit 303.
The second peripheral circuit 303 may include a step-down power circuit 303B, an auxiliary source circuit 303C, a driving circuit 303D, an impedance detecting circuit 303E, a voltage acquisition circuit 303F, a current acquisition circuit 303G, and a voltage-to-current circuit 303H.
Specifically, the step-down power circuit 303B is connected to a power supply, an auxiliary source circuit 303C, a driving circuit 303D, a voltage acquisition circuit 303F, and a voltage conversion current circuit 303H for converting the voltage V of the power supply under the action of the driving circuit 303D 0 Converted into a fourth voltage V 4 . Wherein the fourth voltage V 4 Is preset according to actual requirements; the power supply can directly supply voltage V 0 The voltage V can also be provided by other devices 0 。
The step-down power circuit 303B may include eight input ceramic filter capacitors, two metal oxide semiconductor field effect transistors (Metal Oxide Semiconducto, MOS), one inductor and twelve output ceramic filter capacitors, and the specific structure of the step-down power circuit 303B is not shown, wherein the two MOS transistors may be selected from the chip AP68N06G or other chips, which is not particularly limited in the embodiment of the present utility model.
The auxiliary source circuit 303C is also connected with the driving circuit 303D and the stimulation main control chip 301 for supplying the voltage V of the power supply 0 Converted into a third voltage V 3 The stimulus main control chip 301 and the driving circuit 303D are supplied with electric power.
The auxiliary source circuit 303C may include a switching power supply 03, a first linear regulator 01, and a second linear regulator 02. The input end of the switching power supply 03 is connected with the input end of the step-down power circuit 303B, and the output end is connected with the input end of the first linear voltage stabilizer 01 for supplying the voltage V of the power supply 0 Converted into a first voltage V 1 . The output end of the first linear voltage stabilizer 01 is connected with the input end of the second linear voltage stabilizer 02 for supplying a first voltage V 1 Converted into a second voltage V 2 . The output end of the second linear voltage stabilizer 02 is respectively connected with the stimulation main control chip 301 and the driving circuit 303D for outputting a second voltage V 2 Converted into a third voltage V 3 For use by the stimulus master chip 301 and the driver circuit 303D.
Wherein the first voltage V 1 May be 9V, the second voltage V 2 May be 5V, a third voltage V 3 May be 3.3V. Since the circuit may be subjected to various disturbances in practical applications, the first voltage V 1 Second voltage V 2 Third voltage V 3 May vary in value and therefore the first voltage V is within a range of errors 1 Second voltage V 2 Third voltage V 3 The value of (2) is also allowable, and the first voltage V can be adjusted according to the actual situation 1 Second voltage V 2 Third voltage V 3 Is adjusted.
In order to improve the integration level, the embodiment uses the switching power supply 03, the first linear voltage stabilizer 01 and the second linear voltage stabilizer 02 as an example to illustrate that the switching power supply 03 is of a model XL7005A, the first linear voltage stabilizer 01 is of a model LDO, and the second linear voltage stabilizer 02 is of a model MST5333BTS. It is to be understood that the types of the switching power supply 03, the first linear voltage regulator 01, and the second linear voltage regulator 02 may be other types, which are not particularly limited in the embodiment of the present utility model.
The driving circuit 303D is also connected to the stimulation main control chip 301 and the step-down power circuit 303B for driving the step-down power circuit 303B to output a fourth voltage V 4 。
The driving circuit 303D may be the chip LM5109, or may be a chip of another model, which is not particularly limited in the embodiment of the present utility model and may be selected according to practical situations. Specifically, pin 1 of LM5109 is connected to the output end of MST5333BTS, pins 2 and 3 are used for inputting pulse width modulation (Pulse Width Modulation, PWM) signals, pin 4 is grounded, pin 5 is connected to the MOS transistor on the low side of buck power circuit 303B, pin 7 is connected to the MOS transistor on the high side of buck power circuit 303B, and pins 6 and 8 constitute a self-moment loop.
The voltage-to-current circuit 303H is also connected to the current acquisition circuit 303G and the stimulating electrode 302 for outputting a fourth voltage V from the step-down power circuit 303B 4 Which converts to a current that is provided to the stimulation electrode 302. The voltage-to-current circuit 303H may be an OPA445add chip, or may be another chip, and may be selected according to actual situations.
The current acquisition circuit 303G is further connected to the stimulation main control chip 301, and is configured to sample an output current of the voltage-to-current circuit 303H, and detect a magnitude of the output current.
The voltage acquisition circuit 303F is also connected with the stimulation main control chip 301 for applying a fourth voltage V 4 Sampling and detecting the fourth voltage V 4 Is of a size of (a) and (b).
The impedance detection circuit 303E is connected to the stimulus main control chip 301, and is used for adjusting the power of each load in the second peripheral circuit 303 and suppressing the reflection of signals, so as to improve the security of the system.
The stimulating electrode 302 is connected to the stimulating main control chip 301, and the stimulating electrode 302 may include a first stimulating electrode and a second stimulating electrode, where the first stimulating electrode and the second electrode stimulate the F3 site and the F4 site in fig. 6, respectively. It will be appreciated that in other treatment regimens, the collection site may be other sites, and embodiments of the utility model are not particularly limited in this regard and may be selected according to the circumstances.
The stimulus main control chip 301 may also be connected to the temperature detection module 40 and the digital isolation circuit 501, and the stimulus main control chip may be a chip with a model number of STM32G474CET6, or may be a chip with another model number, which is not particularly limited in the embodiment of the present utility model and may be selected according to practical situations. Specifically, pin 1 of STM32G474CET6 chip connects MST5333 BTS's output, and pin 6 and pin 7 connect the crystal oscillator, and pin 8 and pin 9 connect current acquisition circuit 303G, and pin 10 and pin 11 are responsible for serial ports communication, and pin 12 is used for exporting direct current, and pin 14 and pin 15 connect voltage acquisition circuit 303f, pin 16, pin 17, pin 18 are used for controlling the LED, and pin 20 connects reference voltage, and pin 26, pin 27, pin 28, pin 29 are used for SPI communication, and pin 30 and pin 31 are used for exporting PWM signal, and pin 33, pin 34 are used for USB or communication. In addition, the stimulus main control chip 301 may further include a preset SPI interface and a USB interface or a communication interface, and a space (such as tRNS) may be reserved for the development of the following expansion.
In order to improve transmission quality of an electroencephalogram signal, as another alternative implementation manner, fig. 8 is a schematic structural diagram of an electroencephalogram regulation system provided by an embodiment of the present utility model, where, as shown in fig. 8, the electroencephalogram regulation system includes: an electroencephalogram acquisition module 10, an impedance detection module 20, a transcranial electric stimulation module 30, a temperature detection module 40 and a display processing module 50.
The display processing module 50 may include a digital isolation circuit 501, a power isolation circuit 502, a power management module 503, a control chip 504, a storage unit 505, a transmission unit 506, and a display unit 507.
Specifically, the digital isolation circuit 501 is respectively connected with the electroencephalogram acquisition module 10, the impedance detection module 20, the transcranial electric stimulation module 30 and the control chip 504, the control chip 504 is also respectively connected with the power management module 503, the storage unit 505 and the transmission unit 506, the power isolation circuit 502 is respectively connected with the electroencephalogram acquisition module 10, the transcranial electric stimulation module 30 and the power management module 503, and the transmission unit 506 is connected with the display unit 507.
The display unit 507 is configured to receive a first user operation, and send an acquisition instruction and a release instruction in response to the first user operation; the first user operation indicates an operation of clicking a start button; the sending of the release instruction and the acquisition instruction are synchronized.
The transmission unit 506 is configured to receive and send an acquisition instruction and a release instruction to the control chip 504; the transmission unit 506 may transmit through an infrared module, may transmit through a WiFi module, may transmit through a bluetooth module, etc., which is not particularly limited in the embodiment of the present utility model, and the transmission unit 506 is exemplified as a transmission through a bluetooth module.
The control chip 504 is configured to receive and parse the acquisition instruction and the release instruction; the control chip 504 may be an STM32F103C8T6 chip or another chip, and may be selected according to practical situations. The control chip 504 may also implement various algorithms, which may be written according to actual requirements.
The digital isolation circuit 501 is used for communication isolation of brain electricity acquisition signals and stimulation currents, and improves the anti-interference capability of the system. The digital isolation circuit 501 can be a chip SI8662, so as to improve the integration level. SI8662 is a 6-channel high-speed digital isolation device that is isolated using a semiconductor carrier. The chip can convert an input signal into a modulation signal, and convert the modulation signal into an output signal through the carrier, so that isolation is realized.
The control chip 504 is further configured to receive and send brain wave signals, impedance values, and temperatures to the display unit 507 through the transmission unit 506;
The storage unit 505 is used for storing brain wave signals, so as to reduce the occurrence of brain wave signal loss, and the storage unit 505 may be an SD card, a TF card, or the like, which is not particularly limited in the embodiment of the present utility model, and the storage unit 505 is exemplified as a TF card.
The display unit 507 is also used for displaying brain wave signals, impedance values, temperature and stimulation current;
the power isolation circuit 502 is used for isolating the power management module 503 from the electroencephalogram acquisition module 10 and isolating the power management module 503 from the transcranial electric stimulation module 30, so that interference caused by power is reduced. Specifically, the power isolation circuit 502 may include two parts, one for isolating the power management module 503 from the electroencephalogram acquisition module 10 and the other for isolating the power management module 503 from the transcranial electrical stimulation module 30. In order to improve the integration level, the chip ADuM6010 may be used for both the two parts, or may be other chips, which is not particularly limited in the embodiment of the present utility model.
The power management module 503 is used to provide power to the control chip 504 and to the electroencephalogram acquisition module 10 and the transcranial electrical stimulation module 30 via the power isolation circuit 502. Specifically, the power management module 503 may include two portions, one for providing power to the control chip 504 and to the electroencephalogram acquisition module 10 via the power isolation circuitry 502, and the other for providing power to the transcranial electrical stimulation module 30 via the power isolation circuitry 502. The power management module 503 may include a charging power source and a charging interface, where the charging power source may be a zinc battery power source, a nickel battery power source, a lead battery power source, and the like, and the charging interface may be a lightning interface, a Micro USB interface, a Type-c interface, and the like, and for convenience of illustrating a charging principle, the charging power source is a lithium battery power source, and the charging interface Type-c charging interface is taken as an example for exemplary illustration. Under the condition that no electric energy exists, when the Type-c charging interface of the power management module 503 is connected with the Type-c charging wire, the lithium battery power supply is charged, and after the charging is finished, the lithium battery power supply can provide electric energy for the control chip 504, the brain electricity acquisition module 10 and the transcranial electric stimulation module 30 when the system is used, so that the carrying of a user is facilitated.
When the system is used, the electroencephalogram information acquisition process is as follows: the display unit 507 receives an instruction for the first user to start acquisition, and transmits an acquisition instruction to the transmission unit 506 in response to the first user operation; the transmission unit 506 transmits the instruction to the control chip 504, the control chip 504 analyzes the instruction, the instruction is transmitted to the acquisition chip 101 through the digital isolation circuit 501, the acquisition chip 101 acquires brain wave signals through the brain wave acquisition electrode 102 to the Fp1, fpz and Fp2 sites of the cerebral cortex of the human body, then the brain wave acquisition electrode 102 transmits the acquired brain wave signals to the first peripheral circuit 103, the first peripheral circuit 103 amplifies, filters, analog-to-digital converts and the like the acquired brain wave signals, the first peripheral circuit 103 transmits the processed brain wave signals to the acquisition chip 101, the acquisition chip 101 transmits the processed brain wave signals to the control chip 504 through the WiFi103E in the first peripheral circuit 103, the control chip 504 stores the brain wave signals in the storage unit 505, loss of information is reduced, the transmission unit 506 transmits the processed brain wave signals to the display unit 507, and the display unit 507 displays the processed brain wave signals.
When the brain electrical information is collected, a transcranial electrical stimulation process can be added, wherein the transcranial electrical stimulation process is as follows: the display unit 507 receives an instruction of starting stimulation from the first user, responds to the first user operation, sends a release instruction to the transmission unit 506, the transmission unit 506 transmits the instruction to the control chip 504, the control chip 504 analyzes the instruction, the instruction is then transmitted to the stimulation main control chip 301 through the digital isolation circuit 501, the stimulation main control chip 301 enables the second peripheral circuit 303 to generate corresponding stimulation current according to the analyzed instruction, and the stimulation current is output to the cerebral cortex of the human body through the stimulation electrode 302 for stimulation.
In the transcranial electrical stimulation process, the temperature detection module 40 can detect the temperature of the human cerebral cortex near the stimulation electrode 302, and transmit the detection result to the display unit 507, the display unit 507 displays the detection result, and when the temperature exceeds a preset temperature threshold, the stimulation main control chip 301 stops stimulation.
It should be noted that, the electroencephalogram information acquisition process and the transcranial electric stimulation process in the electroencephalogram control system provided by the embodiment of the utility model can be performed independently, simultaneously or sequentially, and the embodiment of the utility model is not particularly limited.
Fig. 9 is a schematic diagram of still another structure of an electroencephalogram control system according to an embodiment of the present utility model, as shown in fig. 9, an electroencephalogram acquisition and transcranial electric stimulation system may include an acquisition chip 101, an electroencephalogram acquisition electrode 102, a first peripheral circuit 103, an impedance detection module 20, a stimulation main control chip 301, a stimulation electrode 302, a second peripheral circuit 303, a temperature detection module 40, a digital isolation circuit 501, a first power isolation circuit 502A, a second power isolation circuit 502B, a first power management module 503A, a second power management module 503B, a control chip 504, a TF memory card 505A, bluetooth 506A, and a display unit 507.
Wherein, the electroencephalogram acquisition electrode 102 can include an acquisition electrode, a common electrode, and a driving ground electrode, the temperature detection module 40 can include a first temperature detection sensor 401 and a second temperature detection sensor 402, the power isolation circuit 502 can include a first power isolation circuit 502A and a second power isolation circuit 502B, and the power management module 503 can include a first power management module 503A and a second power management module 503B. Wherein, the first power management module 503A and the second power management module 503B may each include a lithium battery power 2001 and a Type-c charge 2002. The lithium battery power 2001 in the first power management module 503A may provide a voltage of 5 volts (V) to the control chip 504 and the brain electrical acquisition module 10, and the lithium battery power 2001 in the second power management module 503B may provide a voltage of 16V to the transcranial electrical stimulation module 30.
Specifically, the acquisition chip 101 is respectively connected with the electroencephalogram acquisition electrode 102, the first peripheral circuit 103, the impedance detection module 20 and the digital isolation circuit 501; the stimulation main control chip 301 is respectively connected with the stimulation electrode 302, the second peripheral circuit 303, the first temperature detection sensor 401, the second temperature detection sensor 402 and the digital isolation circuit 501; the first temperature detection sensor 401 and the second temperature detection sensor 402 are respectively positioned at two sides of the stimulation electrode 302; the digital isolation circuit 501 is also connected with the impedance detection module 20 and the control chip 504; the control chip 504 is also connected with the TF memory card 505A, the bluetooth 506A and the lithium battery power 2001 in the first power management module 503A; the lithium battery power supply 2001 in the first power management module 503A is also connected with the Type-C charge 2002 and the first power isolation circuit 502A in the first power management module 503A; the first power isolation circuit 502A is further connected to the first peripheral circuit 103 and the acquisition chip 101, and the second power isolation circuit 502B is connected to the second peripheral circuit 303, the stimulation main control chip 301, and the lithium battery power 2001 in the second power management module 503B; the lithium battery power supply 2001 in the second power management module 503B is also connected to the Type-C charge 2002 in the second power management module 503B; bluetooth 506A is also connected to a display unit 507.
The lithium battery power 2001 in the first power management module 503A may provide a voltage of 5V to the control chip 504 and the electroencephalogram acquisition module 10, and the lithium battery power 2001 in the second power management module 503B may provide a voltage of 16V to the transcranial electric stimulation module 30. It can be understood that in practical application, since the voltage is unstable, there is an error in the power supply process, and therefore, the voltage provided by the two lithium battery power supplies 2001 is error, and within the allowable error range, the voltage provided by the two lithium battery power supplies 2001 is also within the protection scope of the present utility model.
The selection and function of the other modules (such as the type of the chip) are the same as those described above, and are not repeated here.
Specifically explaining the working principle of the electroencephalogram regulation and control system, when the system is used, the electroencephalogram information acquisition process is as follows: the display unit 507 receives a first user operation, and responds to the first user operation, a command to start acquisition is sent, the bluetooth 506A receives the sent command to start acquisition, the control chip 504 analyzes the command, the command is transmitted to the acquisition chip 101 through the digital isolation circuit 501, the acquisition chip 101 collects brain wave signals at Fp1, fpz and Fp2 sites of the cerebral cortex of a human body through the acquisition electrode, the public electrode and the driving ground electrode respectively, then the brain wave acquisition electrode 102 transmits the collected brain wave signals to the first peripheral circuit 103, the first peripheral circuit 103 amplifies, filters, analog-to-digital converts and the like the collected brain wave signals, the acquisition chip 101 transmits the processed brain wave signals to the control chip 504 through the WiFi103E in the first peripheral circuit 103, the control chip 504 stores the brain wave signals to the TF memory card 505A, loss of information is reduced, the bluetooth 506A transmits the processed brain wave signals to the display unit 507, and the display unit 507 displays the processed brain wave signals.
When the brain electrical information is collected, a transcranial electrical stimulation process can be added, wherein the transcranial electrical stimulation process is as follows: the display unit 507 receives a first user operation, and responds to the first user operation, and sends an instruction for starting stimulation, when the bluetooth 506A receives the sent instruction for starting stimulation, the instruction is transmitted to the control chip 504, the control chip 504 analyzes the instruction, and then the instruction is transmitted to the stimulation main control chip 301 through the digital isolation circuit 501, the stimulation main control chip 301 can enable the second peripheral circuit 303 to generate corresponding stimulation current according to the analyzed instruction, and the stimulation current is output to the cerebral cortex of the human body for stimulation.
In the transcranial electrical stimulation process, the first temperature detection sensor 401 detects the temperature of the human cerebral cortex near the first electrode, the second temperature detection sensor 402 detects the temperature of the human cerebral cortex near the second electrode, and in the process, the detection result is transmitted to the display unit 507 through the stimulation main control chip 301, and the display unit 507 displays the detection result.
It should be noted that, the electroencephalogram information acquisition process and the transcranial electric stimulation process in the electroencephalogram control system provided by the embodiment of the utility model can be performed independently, simultaneously or sequentially, and the embodiment of the utility model is not particularly limited.
Fig. 10 is a schematic structural diagram of an electroencephalogram control device according to an embodiment of the present utility model, as shown in fig. 10, the device includes a hairband, a left and right ear mastoid disposable electrode patch slot 905A, a start key 906, a shutdown key 907, a left ear mastoid disposable electrode patch 908, a right ear mastoid disposable electrode patch 909, a left and right ear mastoid disposable electrode patch electrode connection end 905B, a control apparatus 900, an electroencephalogram acquisition disposable electrode patch 902B, a stimulation electrode disposable electrode patch, and the electroencephalogram control system in fig. 9.
Specifically, the hair band includes two parts, an electroencephalogram acquisition hair band 901A and a transcranial electrical stimulation hair band 901B. The material of the hair band 901 may be inelastic or elastic, and in order to facilitate adjustment by the testee, the embodiment of the present utility model is exemplified by taking the elastic material of the hair band 901 as an example. The stimulation electrode disposable electrode patch includes a first electrode disposable electrode patch 903B, a second electrode disposable electrode patch 904B.
The left and right ear mastoid disposable electrode patch card slots 905A, the on key 906, and the off key 907 are located on the control device 900, and the control device 900 is located on the side of the transcranial electric stimulation hair band 901B, which may be the left side or the right side, and the embodiment of the present utility model is exemplified by the left side.
The left ear mastoid disposable electrode patch 908 and the right ear mastoid disposable electrode patch 909 are connected to the left and right ear mastoid disposable electrode patch electrode connection end 905B, respectively, and the left and right ear mastoid disposable electrode patch electrode connection end 905B is connected to the left and right ear mastoid disposable electrode patch card slot 905A.
An electroencephalogram acquisition electrode 102 in the electroencephalogram regulation and control system is positioned on an electroencephalogram acquisition hairband 901A, and an electroencephalogram acquisition disposable electrode patch 902B is connected with the electroencephalogram acquisition electrode 102.
The stimulating electrode 302 in the brain electric control system is positioned on the transcranial electric stimulating hairband, and the disposable patch of the stimulating electrode is connected with the stimulating electrode 302. The stimulating electrode 302 includes a first electrode and a second electrode, specifically, the first electrode is located at a position 903A on the transcranial electric stimulation hair band 901B, the second electrode is located at a position 904A on the transcranial electric stimulation hair band 901B, the first electrode disposable electrode patch 903B is connected to the first electrode, and the second electrode disposable electrode patch 904B is connected to the second electrode.
The brain electricity regulating and controlling equipment performs data transmission in a Bluetooth mode, and no data line is required to be connected when the brain electricity regulating and controlling equipment is worn; the charging wire with Type-C interface inserts the Type-C that corresponds on the equipment and charges the mouth and can charge when charging, and the in-process signal lamp that charges shows red, shows blue after charging. When in wear, the electroencephalogram acquisition disposable electrode patch 902B is slid in along the forehead disposable patch electrode clamping groove 902A until the magnet is tightly adsorbed; and a proper amount of conductive paste is extruded into the three sponges of the electrode; the electrode connection end 905B of the disposable electrode patch of the left and right ear mastoid is slid in along the clamping groove 905A of the disposable electrode patch of the left and right ear mastoid until the magnet is tightly adsorbed; and a proper amount of conductive paste is extruded into two sponges of the electrode; the assembled electroencephalogram acquisition and transcranial electric stimulation equipment is worn on the forehead of a tested person in the middle, and three sponges in the electroencephalogram acquisition disposable electrode patch 902B are tightly attached to the forehead and correspond to Fp1, fpz and Fp2 leads respectively; the left ear mastoid disposable electrode patch 908 and the right ear mastoid disposable electrode patch 909 are respectively attached to the left ear mastoid and the right ear mastoid; the first electrode disposable electrode patch 903B and the second electrode disposable electrode patch 904B correspond to the leads at F3 and F4, respectively. Before wearing, a tested person needs to wipe the forehead leaves and the left and right mastoid with the physiological saline by using the medical gauze, so that the electrode is tightly attached to the tested person, and the accuracy of data is improved.
After wearing, the power-on key 906 of the control device 900 is pressed for a long time, the signal lamp is green, the power-on operation is completed, when the electroencephalogram acquisition and transcranial electric stimulation equipment is required to be taken off, the power-off key 907 of the control device 900 is pressed for a long time, the signal lamp is turned off, and the power-off operation is completed.
Fig. 11 is a schematic diagram of a display interface related to a display unit in a display processing module provided by an embodiment of the present utility model, where, as shown in fig. 11, the display interface includes an electroencephalogram acquisition window, an electroencephalogram signal display window, a transcranial electric stimulation window, an actual data display window, a control panel, an exit system, and an output current window Iout.
The electroencephalogram acquisition window comprises serial port number selection, baud rate, serial port opening, information input of a tested person, data acquisition start and acquisition report generation.
The electroencephalogram signal display window comprises an electroencephalogram signal display window (2) of an Fp1 channel, an electroencephalogram signal display window (2) of an Fpz channel and an electroencephalogram signal display window (2) of an Fp2 channel, and the fact that the number of sampling points of a small window is larger than that of a large window is needed, so that the display quality is higher than that of the large window. The transcranial electrical stimulation window includes mode selection, stimulation duration, stimulation current, and frequency. The actual data display window comprises impedance, actual current value, actual frequency value and human scalp temperature. The control panel includes a start stimulus and an end stimulus.
When the tested person wears the electroencephalogram control device as shown in fig. 10, an operator can click on 'information input of the tested person', and relevant information of the tested person such as height, age, weight, gender and the like is input; then selecting a corresponding serial number and a corresponding baud rate to enable a data transmission port of the electroencephalogram acquisition and transcranial electric stimulation equipment to be in a state of being ready to be opened; and then clicking the data acquisition start, the electroencephalogram acquisition and transcranial electric stimulation equipment starts to acquire electroencephalogram signals at Fp1, fpz and Fp2 points of the cerebral cortex of the human body, the acquired electroencephalogram signals are displayed in windows corresponding to Fp1, fpz and Fp2, and when the acquisition is finished, the acquisition report generation can be clicked, and then the acquired signal data can be stored in a computer memory in the form of an excel table.
During electroencephalogram acquisition, an option of a transcranial electric stimulation window can be set, mode selection can select tDCS or tACS, and then stimulation duration, stimulation current and stimulation frequency are set respectively. When the selection mode is tDCS, the stimulation current and the stimulation duration are required to be configured, and the stimulation current ranges from 1mA to 2mA; when the selected mode is tACS, the stimulation frequency and the stimulation duration are required to be configured, the stimulation frequency is generally the same as the frequency of human brain electricity, such as delta (0.5-3 Hz), theta (4-7 Hz), alpha (8-13 Hz) and beta (14-30 Hz), the brain electricity collection and transcranial electric stimulation equipment starts to stimulate F3 and F4 points of the cerebral cortex of the human body, and the output current window Iout can see the condition of the current system output current. When the stimulation is ended, the 'ending stimulation' can be clicked, and the brain electricity collection and transcranial electric stimulation equipment stops stimulating the F3 and F4 points of the cerebral cortex of the human body.
The actual detection data window can feed back impedance, an actual current value, an actual frequency value and a temperature value of human scalp in real time, so that the electric stimulation is always kept in a safe and controllable range, and the change of human brain electrical signals when different electric stimulation is implemented can be clearly seen, thereby playing a good and clear auxiliary role in developing human brain electrical stimulation experiments for researchers.
It should be noted that, the electroencephalogram acquisition process and the transcranial electric stimulation process in the electroencephalogram acquisition and transcranial electric stimulation equipment provided by the embodiment of the utility model can be separately and independently performed, namely, transcranial electric stimulation is not performed during electroencephalogram acquisition, and electroencephalogram acquisition is not performed during transcranial electric stimulation; the brain electrical collection and transcranial electrical stimulation can be synchronously performed; the transcranial electrical stimulation can be added in a certain period of time in the process of electroencephalogram acquisition, the electroencephalogram acquisition can be added in a certain period of time in the process of transcranial electrical stimulation, and the like, and the embodiment of the utility model is not particularly limited and is selected according to practical conditions.
The display interface provided by the embodiment of the utility model is a visual interface, so that the complexity of equipment use can be reduced, and the display interface is convenient for a tested person to use.
In the description of the present utility model, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.
It should be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
Furthermore, in the present utility model, unless explicitly specified and limited otherwise, the terms "connected," "coupled," and the like are to be construed broadly and may be, for example, mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, unless otherwise specifically defined, the meaning of the terms in this disclosure is to be understood by those of ordinary skill in the art.
Reference in the specification to "one embodiment" or "some embodiments" or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the utility model. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments" unless expressly specified otherwise. Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (10)

1. An electroencephalogram regulation system, characterized in that the electroencephalogram regulation system comprises: the device comprises an electroencephalogram acquisition module, an impedance detection module, a transcranial electric stimulation module, a temperature detection module and a display processing module, wherein the electroencephalogram acquisition module and the impedance detection module are connected, and the display processing module is respectively connected with the electroencephalogram acquisition module, the impedance detection module and the transcranial electric stimulation module;
the temperature detection module is used for collecting temperature and sending the temperature to the display processing module through the transcranial electric stimulation module;
the transcranial electric stimulation module is used for releasing stimulation current and stopping releasing the stimulation current when the temperature is greater than a preset temperature threshold;
the electroencephalogram acquisition module is used for synchronously acquiring brain wave signals when the transcranial electric stimulation module releases stimulation current;
the impedance detection module is used for detecting the impedance value of the electroencephalogram acquisition module;
the display processing module is used for receiving and displaying the brain wave signals, the impedance values, the stimulation current and the temperature, and prompting a first user to reduce the impedance values when the impedance values are larger than a preset impedance threshold.
2. The electroencephalogram regulation and control system according to claim 1, wherein the display processing module is used for sending a release instruction to the transcranial electrical stimulation module and sending an acquisition instruction to the electroencephalogram acquisition module;
The release instruction is used for indicating the transcranial electric stimulation module to release the stimulation current according to preset stimulation parameters; the acquisition instruction is used for instructing the electroencephalogram acquisition module to acquire the electroencephalogram signals.
3. The electroencephalogram regulation and control system according to claim 2, wherein the display processing module is further configured to compare the temperature with the preset temperature threshold, and send a stop instruction to the transcranial electrical stimulation module when the temperature is greater than the preset temperature threshold, the stop instruction being configured to instruct the transcranial electrical stimulation module to stop releasing stimulation current.
4. The brain electricity regulation and control system according to claim 3, wherein the brain electricity acquisition module comprises an brain electricity acquisition electrode and an acquisition chip, and the acquisition chip is respectively connected with the brain electricity acquisition electrode, the impedance detection module and the display processing module;
the electroencephalogram acquisition electrode is used for being in contact with the scalp of the second user;
the acquisition chip is used for receiving the acquisition instruction and acquiring the brain wave signals through the brain electricity acquisition electrode;
the impedance detection module is used for detecting the impedance value of the acquisition chip.
5. The electroencephalogram control system according to claim 4, wherein the electroencephalogram acquisition module further comprises a first peripheral circuit connected with the electroencephalogram acquisition electrode and the acquisition chip, respectively;
the first peripheral circuit is used for processing the brain wave signals and sending the processed brain wave signals to the acquisition chip;
the acquisition chip is used for sending the processed brain wave signals to the display processing module.
6. The brain electrical control system according to claim 4 or 5, wherein the transcranial electrical stimulation module comprises a stimulation electrode and a stimulation master control chip, the stimulation master control chip is respectively connected with the stimulation electrode, the temperature detection module and the display processing module, and the stimulation electrode is also connected with the temperature detection module;
the stimulating electrode is for contacting the scalp of the second user;
the stimulation main control chip is used for receiving the release instruction and releasing stimulation current through the stimulation electrode;
the temperature detection module is used for collecting the temperature of the scalp of the second user through the stimulation electrode and sending the temperature to the display processing module through the stimulation main control chip.
7. The electroencephalogram regulation and control system according to claim 6, wherein the transcranial electrical stimulation module further comprises a second peripheral circuit connected to the stimulation electrode and the stimulation master control chip, respectively;
the stimulation main control chip is used for sending the preset stimulation parameters to the second peripheral circuit;
the second peripheral circuit is used for generating corresponding stimulation current according to the preset stimulation parameters and transmitting the corresponding stimulation current to the stimulation electrode.
8. The electroencephalogram control system according to claim 6, wherein the display processing module comprises a digital isolation circuit, a power management module, a control chip, a storage unit, a transmission unit and a display unit;
the digital isolation circuit is respectively connected with the electroencephalogram acquisition module, the impedance detection module, the transcranial electric stimulation module and the control chip, the control chip is also respectively connected with the power management module, the storage unit and the transmission unit, the power isolation circuit is respectively connected with the electroencephalogram acquisition module, the transcranial electric stimulation module and the power management module, and the transmission unit is connected with the display unit;
The display unit is used for receiving a first user operation and responding to the first user operation and sending the acquisition instruction and the release instruction;
the transmission unit is used for receiving and sending the acquisition instruction and the release instruction to the control chip;
the control chip is used for receiving and analyzing the acquisition instruction and the release instruction;
the digital isolation circuit is used for communication isolation of the brain wave signals and the stimulation current;
the control chip is also used for receiving and sending the brain wave signals, the impedance values and the temperature to the display unit through the transmission unit;
the storage unit is used for storing the brain wave signals;
the display unit is further used for displaying the brain wave signals, the impedance values, the temperature and the stimulation current;
the power isolation circuit is used for isolating the power management module from the electroencephalogram acquisition module and isolating the power management module from the transcranial electric stimulation module;
the power management module is used for providing electric energy for the control chip and the electroencephalogram acquisition module and the transcranial electric stimulation module through the power isolation circuit.
9. The electroencephalogram regulation system of claim 8, wherein when the electroencephalogram acquisition module comprises the acquisition chip, the digital isolation circuit connected with the electroencephalogram acquisition module comprises: the digital isolation circuit is connected with the acquisition chip;
when the transcranial electrical stimulation module comprises the stimulation main control chip, the connection of the digital isolation circuit and the transcranial electrical stimulation module comprises: the digital isolation circuit is connected with the stimulation main control chip.
10. An electroencephalogram control apparatus, characterized in that the electroencephalogram control apparatus comprises: the brain electrical control system of claim 9, wherein the hair band, the left and right ear mastoid disposable electrode patch clamping groove, the start key, the shutdown key, the left ear mastoid disposable electrode patch, the right ear mastoid disposable electrode patch, the left and right ear mastoid disposable electrode patch electrode connecting end, the control device, the brain electrical collection disposable electrode patch, the stimulation electrode disposable electrode patch;
the hair band comprises an electroencephalogram acquisition hair band and a transcranial electric stimulation hair band;
the left and right ear mastoid disposable electrode patch clamping groove, the start key and the shutdown key are positioned on the control device, and the control device is positioned on the side face of the transcranial electric stimulation hair band;
The left ear mastoid disposable electrode patch and the right ear mastoid disposable electrode patch are respectively connected with the electrode connecting ends of the left ear mastoid disposable electrode patch and the right ear mastoid disposable electrode patch, and the electrode connecting ends of the left ear mastoid disposable electrode patch and the right ear mastoid disposable electrode patch are connected with the clamping grooves of the left ear mastoid disposable electrode patch and the right ear mastoid disposable electrode patch;
the electroencephalogram acquisition electrode in the electroencephalogram regulation and control system is positioned on the electroencephalogram acquisition hair band, and the electroencephalogram acquisition disposable electrode patch is connected with the electroencephalogram acquisition electrode;
the stimulating electrode in the brain electricity regulating and controlling system is positioned on the transcranial electric stimulation hair band, and the disposable patch of the stimulating electrode is connected with the stimulating electrode.
CN202321643085.6U 2023-06-27 2023-06-27 Electroencephalogram control system and electroencephalogram control equipment Active CN220757818U (en)

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