CN115671547A - Wearable electroencephalogram stimulation method and device capable of adjusting various current waveforms - Google Patents
Wearable electroencephalogram stimulation method and device capable of adjusting various current waveforms Download PDFInfo
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- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/36014—External stimulators, e.g. with patch electrodes
- A61N1/36025—External stimulators, e.g. with patch electrodes for treating a mental or cerebral condition
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- A61N1/0404—Electrodes for external use
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- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/36014—External stimulators, e.g. with patch electrodes
- A61N1/3603—Control systems
- A61N1/36031—Control systems using physiological parameters for adjustment
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Abstract
The invention provides a wearable electroencephalogram stimulation method capable of adjusting various current waveforms, which comprises the following steps: selecting a preset starting mode, acquiring corresponding preset parameters, and outputting the minimum working current to a working circuit; measuring the impedance of the working circuit, and comparing the impedance with a preset threshold value; if the working current is smaller than the preset threshold, increasing the working current to a set value of a preset parameter and operating until the operation is finished; if the working current is greater than the preset threshold, increasing the working current to a set value of a preset parameter, running until the working current is finished, judging whether the working current can reach the set value, and detecting a corresponding current state; and acquiring running state parameters and uploading the running state parameters to an external upper computer for reference. The invention can realize the output of various waveform combinations by adjusting the waveform, amplitude, polarity and frequency of specific current, thereby realizing the aim of stimulating cranial nerves. The device is small and exquisite, the integrated level is high, and is wearable, and is with low costs, has higher security and reliability.
Description
Technical Field
The invention belongs to the field of electronic medical instruments, and particularly relates to a wearable electroencephalogram stimulation method and device capable of adjusting various current waveforms.
Background
The electroencephalogram stimulation device is used for carrying out experimental research at home and abroad by electrically stimulating a cerebellar apical nucleus (FN) through electroencephalogram biomimetic stimulation, and has nearly forty years history; the clinical electroencephalogram bionic electrical stimulator has been used for more than ten years. A large number of experiments and reports at home and abroad prove that the electrical stimulation FN can obviously increase local cerebral blood flow (RCBF) and improve cerebral circulation.
In the prior art, no matter the electroencephalogram stimulation device or the myoelectricity stimulation device is provided, a common setting mode is that a non-polar constant current stimulator is composed of a single chip microcomputer, a D/A converter, a stimulation signal synthesizer and a stimulation signal output device, the single chip microcomputer is connected with the stimulation signal synthesizer through the D/A converter and finally reaches a patient through the stimulation signal output device, the stimulation signal synthesizer is composed of a square wave signal device, an amplitude-modulated square wave signal device and an amplitude-modulated differential type index signal device, the square wave signal generates an amplitude-modulated square wave signal through an amplitude modulation circuit, the amplitude-modulated square wave signal generates an amplitude-modulated differential type index signal through a differential circuit, the stimulation signal output device is composed of a bipolar signal device, a unipolar signal bipolar signal output device and a stimulation output device, the bipolar signal generates a unipolar signal through a full-wave finishing circuit, the unipolar signal generates a unipolar signal bipolar output through a bipolar control circuit, and the unipolar signal output device becomes the stimulation output device through a voltage control constant current circuit. Therefore, in the prior art, in order to output square waves and full waves, the square waves and the full waves are generated through different annunciators, a plurality of devices are needed, the integration level is low, the size of the whole device is large, and the device is not easy to move.
Disclosure of Invention
The invention aims to provide a wearable electroencephalogram stimulation method and device capable of adjusting various current waveforms, and aims to solve the problem of low integration level.
In order to solve the problems, the technical scheme of the invention is as follows:
a wearable brain electrical stimulation method capable of adjusting various current waveforms comprises the following steps:
selecting a preset starting mode, acquiring corresponding preset parameters, and outputting the minimum working current to a working circuit; measuring the impedance of the working circuit, and comparing the impedance with a preset threshold value;
if the working current is smaller than the preset threshold, increasing the working current to the set value of the preset parameter and operating until the operation is finished;
if the working current is greater than the preset threshold, increasing the working current to a set value of a preset parameter, running until the working current is finished, judging whether the working current can reach the set value, and detecting a corresponding current state;
and acquiring the running state parameters and uploading the running state parameters to an external upper computer for reference.
The starting mode comprises a direct current output mode, an alternating current output mode, a square wave output mode, a triangular wave output mode, a random noise output mode and a default direct current output mode;
the preset parameters comprise current amplitude, current frequency and electrifying time;
the corresponding preset parameters are different under different starting modes.
Specifically, the working current is slowly increased to a set value through fixed time, and after the operation is finished, the working current is slowly decreased to 0 through the fixed time;
wherein the fixed time may be set to 15S.
Further preferably, before selecting the preset starting mode and obtaining the corresponding preset parameters, the method further comprises the following steps,
and starting the device provided with the wearable brain electrical stimulation method capable of adjusting various current waveforms, and establishing communication connection with the device so as to set the device.
If the working current does not reach the set value, the working current keeps the maximum voltage limit state, detects the corresponding current state and returns to the step of setting the device.
Specifically, the running state parameters comprise the current, the voltage, the impedance, the frequency and the running time of the working circuit, and are displayed on an external upper computer;
and adjusting parameters of the current amplitude, the current frequency and the electrifying time of the working circuit through an external upper computer.
A wearable electroencephalogram stimulation device capable of adjusting various current waveforms is configured with the wearable electroencephalogram stimulation method capable of adjusting various current waveforms, and comprises
The device comprises an input module, a main control module, an output module, a detection module and a power supply module;
the input module is in signal connection with the main control module and is used for inputting control signals to the control module;
the main control module is in signal connection with the output module and is used for receiving the control signal to adjust the output parameters of the output module;
the detection module is in signal connection with the main control module and is used for detecting whether a circuit in the main control module works normally or not;
the power supply module is electrically connected with the main control module and used for providing electric power support.
Specifically, the input module comprises an upper computer and a Bluetooth communication piece;
the upper computer is in signal connection with the main control module through the Bluetooth communication piece and is used for inputting control signals to the main control module or receiving parameters measured by the detection module from the main control module.
The detection module comprises a current detection unit and a battery capacity detection unit;
the current detection unit is used for detecting the current magnitude of the main control module and the output module during working;
the battery capacity detection unit is used for detecting the residual capacity of the battery of the wearable electroencephalogram stimulation device capable of adjusting various current waveforms.
Specifically, the main control module is an MCU chip and is used for outputting a stimulation electrical signal to the output module based on the control signal;
the output module comprises a DA converter and is used for receiving the stimulation electric signal and adjusting the magnitude of the output current so as to output different waveforms.
A wearable brain electrical stimulation device capable of adjusting various current waveforms comprises
The wearable electroencephalogram stimulation device capable of adjusting various current waveforms is arranged in the outer shell, and an accommodating space is formed below the outer shell and used for being worn at a target position;
the electrode is arranged at the top of the accommodating space, is electrically connected with the wearable electroencephalogram stimulation device capable of adjusting various current waveforms, and is used for receiving different current waveforms output by the output module to generate electromagnetism;
the lead is respectively and electrically connected with the electrode and the wearable brain electrical stimulation device capable of adjusting various current waveforms.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects:
according to the invention, the stimulation power supply is turned on by arranging the MCU chip, and the DA converter is matched with the stimulation power supply to regulate the output current, so that square waves or triangular waves are output at the electrode end. Specifically, the MCU opens the output end of the power supply module according to the received command, so that the current passes through the MCU chip and the DA converter, and then the MOS tube switch in the control circuit electrically connected with the electrode end is controlled through the operational amplifier to output the corresponding waveform. At the moment, the bias voltage is started, the bias voltage can be controlled, the bias voltage also controls the MOS switch through the operational amplifier, and different frequencies are output based on the set duty ratio, so that the aim of stimulating cranial nerves by different waveforms and frequencies is fulfilled. The device of this application is more small and exquisite, the integrated level is high, and is wearable. Fewer devices are required and the overall cost is lower. The invention also has a detection module and designs a corresponding using method, thereby improving the using safety and reliability of the device.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention.
FIG. 1 is a flow chart of a wearable brain electrical stimulation method capable of adjusting various current waveforms according to the present invention;
FIG. 2 is a block diagram of a wearable brain electrical stimulation device capable of adjusting various current waveforms according to the present invention;
FIG. 3 is a flow chart of an embodiment of the wearable brain electrical stimulation apparatus capable of adjusting various current waveforms according to the present invention;
FIG. 4 is a circuit diagram of the MCU chip of the present invention;
FIG. 5 is a circuit diagram of the control circuit of the output module according to the present invention;
FIG. 6 is a schematic view of a depression of a wearable brain electrical stimulation apparatus capable of adjusting various current waveforms according to the present invention;
fig. 7 is a schematic view of the wearable brain electrical stimulation apparatus capable of adjusting multiple current waveforms according to the present invention.
Description of the reference numerals
1: an electrode; 2: a wire; 3: and a containing space.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.
For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "a" means not only "only one of this but also a case of" more than one ".
The wearable brain electrical stimulation method and device capable of adjusting multiple current waveforms provided by the invention are further described in detail with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims.
Example 1
Referring to fig. 1 and fig. 3, the present embodiment provides a wearable brain electrical stimulation method capable of adjusting multiple current waveforms, including the following steps:
the wearable brain electrical stimulation method device with the adjustable multiple current waveforms is started through the upper computer and is in communication connection with the wearable brain electrical stimulation device, so that the wearable brain electrical stimulation device can be set.
After the setting is finished, the initialization is started, and then a preset starting mode is selected and corresponding preset parameters are obtained, so that the minimum working current is output to the working circuit. The starting mode comprises a direct current output mode, an alternating current output mode, a square wave output mode, a triangular wave output mode, a random noise output mode and a default direct current output mode. The preset parameters comprise current amplitude, current frequency and electrifying time, and the corresponding preset parameters under different starting modes are different from each other, so that different waveforms are output. The impedance of the operating circuit at this time is then measured and compared to a preset threshold.
If the current is smaller than the preset threshold, slowly increasing the working current 15S to the set value of the preset parameter, and operating according to the set time until the end, wherein the working current is slowly reduced to 0 in 15S after the end of the operation.
If the working current is larger than the preset threshold, the working current is slowly increased to the set value of the preset parameter within 15S and is operated according to the set time until the operation is finished. Meanwhile, it is necessary to determine whether the operating current can reach a set value and detect a corresponding current state. Specifically, if the working current fails to reach the set value, the working current maintains the maximum voltage limit state, and the corresponding current state is detected. And if the detected current is close to 0, the state lamp is made to display red to indicate that the work is not normal, and if the detected current does not reach a set value, the state lamp is made to display yellow to indicate that the specified work state is not reached. And if the working current fails to reach the set value, the step of setting the device is returned to, and the device is reset.
And after the setting is finished, starting normal work. When the device works, no matter in a normal working state or an abnormal working state, the running state parameters need to be acquired in real time and uploaded to an external upper computer for reference. The operating state parameters comprise the current, the voltage, the impedance, the frequency and the operated time of the working circuit, and are displayed on an external upper computer. In addition, parameter adjustment can be carried out on the current amplitude, the current frequency and the power-on time of the working circuit through an external upper computer until the operation is finished.
Example 2
Referring to fig. 2, the present embodiment provides a wearable brain electrical stimulation apparatus capable of adjusting multiple current waveforms, which is configured with the wearable brain electrical stimulation method capable of adjusting multiple current waveforms as in embodiment 1. The main body of the intelligent control device comprises an input module, a main control module, an output module, a detection module and a power supply module.
In this embodiment, the input module is in signal connection with the main control module and is used for inputting a control signal to the control module, the input module is equivalent to an external remote controller, and the main control module is equivalent to a core module inside the electrical stimulation device. Specifically, the input module comprises an upper computer and a Bluetooth communication piece, and the Bluetooth communication piece is integrated in the upper computer. The user can be in Bluetooth communication connection with the main control module through the upper computer, and specifically, the Bluetooth communication piece is used for establishing communication connection with the main control module. Next, the user opens the software program configured in embodiment 1, and remotely controls the main control module of this embodiment through bluetooth, specifically by inputting a control signal to the main control module. Of course, the user can also receive the parameters measured by the detection module from the main control module to perform real-time monitoring of the working state of the present embodiment.
In this embodiment, the main control module is in signal connection with the output module, and is configured to receive the control signal to adjust the output parameter of the output module. Specifically, the core of the main control module is an MCU chip, and can output different stimulation electrical signals to the output module according to the difference of the control signals. The control signal comprises preset parameters under different output modes such as a direct current output mode, an alternating current output mode, a square wave output mode, a triangular wave output mode, a random noise output mode, a default direct current output mode and the like, namely different current amplitudes, different current frequencies and different electrifying time lengths.
In this embodiment, the detection module is in signal connection with the main control module, and is configured to detect whether a circuit in the main control module works normally. Specifically, the detection module includes a current detection unit and a battery capacity detection unit. The current detection unit is used for detecting the impedance and the current of the main control module and the output module during working to be used as a basis for judging whether the main control module and the output module work normally, and an alarm is given if the impedance is larger than a certain value. The battery capacity detection unit is used for detecting the remaining capacity of the battery of the present embodiment, and the size of the battery capacity can be detected by DAC detection or a special fuel gauge.
The power supply module is electrically connected with the main control module and used for providing power support, and the MCU can turn off the power supply chip and enter a standby mode when the power supply module is used for saving the battery. The output module comprises a DA converter controlled by the MUC to receive the stimulation electric signal and adjust the magnitude of the output current so as to output different waveforms.
Referring to fig. 4 and 5, in the present embodiment, the MCU receives a command from the host computer to turn on the output terminal (non-power supply terminal) of the power module. The current of the output end enters the control circuit of the output module after passing through the MCU chip and the DA converter. And the corresponding waveform is output by controlling the on and off of an MOS tube switch in a control circuit electrically connected with the electrode end through the operational amplifier. At the moment, the bias voltage is turned on, the bias voltage can be controlled, the bias voltage also controls the MOS switch through the operational amplifier, and different frequencies are output based on the set duty ratio. And the running time is controlled by switching on and off the output end of the power supply module according to a command issued by the upper computer.
With reference to fig. 6 to 7, the wearable electroencephalogram stimulation device capable of adjusting various current waveforms disclosed in the present embodiment is preferably further provided in the present embodiment.
The whole structure is an outer shell which is a head-wearing structure and is integrally in a helmet shape. The wearable brain electrical stimulation device capable of adjusting various current waveforms is arranged in the outer shell. The lower part of the shell body is provided with an accommodating space 3, and the top of the accommodating space 3 is arc-shaped so as to be conveniently worn on a target position, namely the head. The top of the accommodating space 3 is paved with a plurality of electrodes 1, and the electrodes 1 are electrically connected with a wearable electroencephalogram stimulation device capable of adjusting various current waveforms and used for receiving different current waveforms output by the output module to generate different electromagnetism to act on a target position. The lead 2 and the lead 2 are respectively and electrically connected with the electrode 1 and the wearable brain electrical stimulation device capable of adjusting various current waveforms, and the conduction effect is achieved.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, it is still within the scope of the present invention if they fall within the scope of the claims of the present invention and their equivalents.
Claims (11)
1. A wearable electroencephalogram stimulation method capable of adjusting various current waveforms is characterized by comprising the following steps:
selecting a preset starting mode, acquiring corresponding preset parameters, and outputting the minimum working current to a working circuit; measuring the impedance of the working circuit, and comparing the impedance with a preset threshold value;
if the working current is smaller than the preset threshold, increasing the working current to a set value of the preset parameter and running until the working current is finished;
if the working current is larger than the preset threshold, increasing the working current to the set value of the preset parameter, running until the operation is finished, judging whether the working current can reach the set value, and detecting the corresponding current state;
and acquiring running state parameters and uploading the running state parameters to an external upper computer for reference.
2. The wearable brain electrical stimulation method capable of adjusting multiple current waveforms according to claim 1, wherein the starting modes comprise a direct current output mode, an alternating current output mode, a square wave output mode, a triangular wave output mode, a random noise output mode and a default direct current output mode;
the preset parameters comprise current amplitude, current frequency and electrifying time;
the preset parameters corresponding to different starting modes are different from each other.
3. The wearable electroencephalogram stimulation method capable of adjusting multiple current waveforms according to claim 1, wherein the working current is slowly increased to a set value for a fixed time, and after the operation is finished, the working current is slowly decreased to 0 for the fixed time;
wherein the fixed time may be set to 15S.
4. The wearable brain electrical stimulation method capable of adjusting multiple current waveforms according to claim 1, further comprising the following steps before said selecting a preset starting mode and obtaining corresponding preset parameters,
and starting the device provided with the wearable brain electrical stimulation method capable of adjusting various current waveforms, and establishing communication connection with the device so as to set the device.
5. The wearable brain electrical stimulation method capable of adjusting multiple current waveforms according to claim 4, wherein if the working current fails to reach a set value, the working current maintains a maximum voltage limit state, and a corresponding current state is detected and the step of setting the device is returned.
6. The wearable brain electrical stimulation method capable of adjusting multiple current waveforms according to claim 1, wherein the operation state parameters comprise current, voltage, impedance, frequency and operated time of the working circuit, and are displayed on an external upper computer;
and adjusting parameters of the current amplitude, the current frequency and the power-on time of the working circuit through an external upper computer.
7. A wearable electroencephalogram stimulation device capable of adjusting various current waveforms, which is configured with the wearable electroencephalogram stimulation method capable of adjusting various current waveforms as claimed in any one of claims 1 to 6, and is characterized by comprising
The device comprises an input module, a main control module, an output module, a detection module and a power supply module;
the input module is in signal connection with the main control module and is used for inputting control signals to the control module;
the main control module is in signal connection with the output module and is used for receiving the control signal to adjust the output parameters of the output module;
the detection module is in signal connection with the main control module and is used for detecting whether a circuit in the main control module works normally or not;
the power supply module is electrically connected with the main control module and used for providing electric power support.
8. The wearable brain electrical stimulation device capable of adjusting multiple current waveforms according to claim 7, wherein the input module comprises an upper computer and a Bluetooth communication piece;
the upper computer is in signal connection with the main control module through the Bluetooth communication piece and is used for inputting control signals to the main control module or receiving parameters measured by the detection module from the main control module.
9. The wearable brain electrical stimulation device capable of adjusting multiple current waveforms according to claim 7, wherein the detection module comprises a current detection unit and a battery capacity detection unit;
the current detection unit is used for detecting the current of the main control module and the output module during working;
the battery capacity detection unit is used for detecting the residual capacity of the battery of the wearable electroencephalogram stimulation device capable of adjusting various current waveforms.
10. The wearable electroencephalogram stimulation device capable of adjusting various current waveforms according to claim 8, wherein the main control module is an MCU chip and is used for outputting stimulation electric signals to the output module based on the control signals;
the output module comprises a DA converter and is used for receiving the stimulation electric signal and adjusting the magnitude of output current so as to output different waveforms.
11. A wearable electroencephalogram stimulation device capable of adjusting various current waveforms is characterized by comprising
The wearable electroencephalogram stimulation device capable of adjusting various current waveforms, which is disclosed by any one of claims 7 to 10, is arranged in the outer shell, an accommodating space is formed below the outer shell, and the accommodating space is used for being worn at a target position;
the electrode is arranged at the top of the accommodating space, is electrically connected with the wearable electroencephalogram stimulation device capable of adjusting various current waveforms, and is used for receiving different current waveforms output by the output module to generate electromagnetism;
and the lead is electrically connected with the electrode and the wearable electroencephalogram stimulation device capable of adjusting various current waveforms respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211301935.4A CN115671547A (en) | 2022-10-24 | 2022-10-24 | Wearable electroencephalogram stimulation method and device capable of adjusting various current waveforms |
| CN202311367935.9A CN117414529A (en) | 2022-10-24 | 2023-10-20 | Wearable brain electrical stimulation method and device capable of adjusting multiple current waveforms |
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| CN202211301935.4A CN115671547A (en) | 2022-10-24 | 2022-10-24 | Wearable electroencephalogram stimulation method and device capable of adjusting various current waveforms |
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| CN202311367935.9A Pending CN117414529A (en) | 2022-10-24 | 2023-10-20 | Wearable brain electrical stimulation method and device capable of adjusting multiple current waveforms |
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