阅读说明：本技术 具有脑电eeg信号采集功能的装置 (Device with EEG signal acquisition function ) 是由 王晓岸 卢树强 徐荣福 连静静 刘伟 沈阳 于 2021-07-14 设计创作，主要内容包括：本申请公开了一种具有脑电EEG信号采集功能的装置,该装置包括：采集电路板、数字电路板和PCB印刷电路板,其中,采集电路板包括相互连接的电极阵列和预处理装置,预处理装置被配置为对电极阵列检测到的脑电EEG信号进行预处理以得到预处理信号；数字电路板包括微处理单元MCU,微处理单元MCU连接蜂鸣器和通信电路,微处理单元MCU被配置为计算预处理信号的特征值,并在特征值大于预设的特征值阈值时,触发蜂鸣器进行报警；采集电路板和数字电路板安装于PCB印刷电路板上。本申请通过在PCB印刷电路板上集中安装采集电路板和数字电路板的方式,起到了减小具有脑电EEG信号采集功能的装置的内部电路的体积和减轻重量的效果。(The application discloses device with EEG signal acquisition function, the device includes: the EEG signal preprocessing circuit comprises a collecting circuit board, a digital circuit board and a PCB (printed circuit board), wherein the collecting circuit board comprises an electrode array and a preprocessing device which are connected with each other, and the preprocessing device is configured to preprocess EEG signals detected by the electrode array to obtain preprocessed signals; the digital circuit board comprises a microprocessing unit (MCU), the microprocessing unit (MCU) is connected with a buzzer and a communication circuit, and the microprocessing unit (MCU) is configured to calculate a characteristic value of a preprocessing signal and trigger the buzzer to alarm when the characteristic value is greater than a preset characteristic value threshold; the acquisition circuit board and the digital circuit board are mounted on the PCB. This application has played the effect that reduces the volume of the internal circuit of the device that has the EEG signal acquisition function and lightens weight through the mode of concentrated installation collection circuit board and digital circuit board on PCB printed circuit board.)

1. An apparatus having electroencephalogram (EEG) signal acquisition functionality, comprising:

an acquisition circuit board comprising an array of electrodes interconnected with a pre-processing device configured to: preprocessing the EEG signals detected by the electrode array to obtain preprocessed signals;

the digital circuit board, the digital circuit board with gather the circuit board and be connected, including microprocessing unit MCU, microprocessing unit MCU connects bee calling organ and communication circuit, microprocessing unit MCU is configured as: calculating a characteristic value of the preprocessing signal, and triggering the buzzer to alarm when the characteristic value is greater than a preset characteristic value threshold;

the collecting circuit board and the digital circuit board are mounted on the PCB printed circuit board.

2. The apparatus of claim 1, wherein the preprocessing means comprises:

a noise sensor;

the first preprocessing circuit comprises a first filter circuit and a first drying circuit which are connected with each other, the first filter circuit is connected with the electrode array, and the first drying circuit is connected with the microprocessing unit MCU;

and the second preprocessing circuit comprises a second filter circuit and a second drying circuit which are connected with each other, the second drying circuit is connected with the electrode array, and the second filter circuit is connected with the microprocessing unit MCU.

A controller connected with the noise sensor, the first pre-processing circuit, and the second pre-processing circuit, the controller configured to: when the noise value detected by the noise sensor is not larger than a preset noise threshold value, starting the first preprocessing circuit to process the EEG signals detected by the electrode array; and when the noise value detected by the noise sensor is larger than a preset noise threshold value, starting the second preprocessing circuit to process the EEG signals detected by the electrode array.

3. The device of claim 1, wherein the acquisition circuit board and the digital circuit board are mounted on opposite sides of the PCB.

4. The device of claim 1, wherein the PCB printed circuit board is provided with a first groove and a second groove, the collecting circuit board is mounted in the first groove, and the digital circuit board is mounted in the second groove.

5. The device of claim 1, wherein the digital circuit board further comprises a heart rate oximetry sensor connected to the micro processing unit MCU, the micro processing unit MCU configured to:

when the heart rate blood oxygen value detected by the heart rate blood oxygen sensor is larger than a preset heart rate blood oxygen threshold value, triggering the buzzer to alarm; or the preprocessing signal and the heart rate blood oxygen value are transmitted and processed through the communication circuit.

6. The device of claim 5, wherein the digital circuit board further comprises an acceleration sensor, a sound pickup, a data memory and a library memory which are connected with the micro processing unit (MCU).

7. The apparatus of claim 1, further comprising a first power circuit and a second power circuit, wherein the first power circuit is configured to provide power to the acquisition circuit board and the second power circuit is configured to provide power to the digital circuit board.

Technical Field

The application relates to the technical field of acquisition equipment of bioelectricity signals, in particular to a device with an EEG signal acquisition function.

Background

In recent years, EEG and EEG signal analysis has rapidly progressed and began to find application in the clinical area of insomnia, depression, health analysis. In the related art, wearable devices such as a head-mounted sleep apparatus having an electroencephalogram EEG signal acquisition function have the problems of large size, heavy weight and inconvenience in carrying due to the fact that internal circuits occupy large areas.

Disclosure of Invention

In order to solve at least one technical problem, the application provides a device with an electroencephalogram EEG signal acquisition function.

The application provides a device with EEG signal acquisition function, the device includes:

the device comprises a collecting circuit board, a processing circuit and a control circuit, wherein the collecting circuit board comprises an electrode array and a preprocessing device which are connected with each other, and the preprocessing device is configured to preprocess EEG signals detected by the electrode array to obtain preprocessed signals;

the digital circuit board is connected with the acquisition circuit board and comprises a microprocessing unit (MCU) which is connected with a buzzer and a communication circuit, and the microprocessing unit (MCU) is configured to calculate a characteristic value of a preprocessing signal and trigger the buzzer to alarm when the characteristic value is greater than a preset characteristic value threshold;

the PCB printed circuit board, the acquisition circuit board and the digital circuit board are arranged on the PCB printed circuit board.

Further, the pretreatment device includes:

a noise sensor;

the first preprocessing circuit comprises a first filter circuit and a first drying circuit which are connected with each other, the first filter circuit is connected with the electrode array, and the first drying circuit is connected with the microprocessing unit MCU;

and the second preprocessing circuit comprises a second filter circuit and a second drying circuit which are connected with each other, the second drying circuit is connected with the electrode array, and the second filter circuit is connected with the microprocessing unit MCU.

A controller connected to the noise sensor, the first pre-processing circuit, and the second pre-processing circuit, the controller configured to: when the noise value detected by the noise sensor is not larger than a preset noise threshold value, a first preprocessing circuit is started to process the EEG signals detected by the electrode array; and when the noise value detected by the noise sensor is larger than a preset noise threshold value, starting a second preprocessing circuit to process the EEG signal detected by the electrode array.

Further, the acquisition circuit board and the digital circuit board are mounted on both sides of the PCB.

Furthermore, a first groove and a second groove are formed in the PCB, the acquisition circuit board is installed in the first groove, and the digital circuit board is installed in the second groove.

Further, the digital circuit board further comprises a heart rate blood oxygen sensor connected with the micro processing unit MCU, and the micro processing unit MCU is configured to trigger the buzzer to alarm when the heart rate blood oxygen value detected by the heart rate blood oxygen sensor is larger than a preset heart rate blood oxygen threshold value.

Furthermore, the digital circuit board also comprises a transceiver connected with the micro processing unit MCU.

Furthermore, the digital circuit board also comprises an acceleration sensor, a sound pick-up, a data memory and a library memory which are connected with the microprocessing unit MCU.

Further, the device also comprises a first power supply circuit and a second power supply circuit, wherein the first power supply circuit is configured to supply power to the acquisition circuit board, and the second power supply circuit is configured to supply power to the digital circuit board.

This application has played the effect that reduces the volume of the internal circuit of the device that has EEG signal acquisition function through the mode of concentrated installation collection circuit board and digital circuit board on PCB printed circuit board to reach the purpose that alleviates the weight of the device that has EEG signal acquisition function.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an apparatus having an electroencephalogram EEG signal acquisition function according to an embodiment of the present application;

FIG. 2 is a schematic structural diagram of another apparatus with EEG signal acquisition function according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of an embodiment of a PCB in the apparatus with an electroencephalogram EEG signal acquisition function according to the embodiment of the present application; and

fig. 4 is a schematic structural diagram of an embodiment of a digital circuit board in the device with the electroencephalogram EEG signal acquisition function according to the embodiment of the present application.

Detailed Description

Reference will now be made in detail to the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the positional descriptions, such as the directions of up, down, front, rear, left, right, etc., referred to herein are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present application.

In the description of the present application, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and larger, smaller, larger, etc. are understood as excluding the present number, and larger, smaller, inner, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present application, unless otherwise expressly limited, terms such as set, mounted, connected and the like should be construed broadly, and those skilled in the art can reasonably determine the specific meaning of the terms in the present application by combining the detailed contents of the technical solutions.

The application provides a device with EEG signal acquisition function. As shown in fig. 1 or fig. 2, the electrode 100 includes: acquisition circuit board 101, digital circuit board 102 and PCB printed circuit board 103.

The acquisition circuit board comprises an electrode array and a preprocessing device which are connected with each other, and the preprocessing device is configured to preprocess EEG signals detected by the electrode array to obtain preprocessed signals. Specifically, the electrode array comprises a plurality of electrodes so as to acquire EEG signals of a tested user through the plurality of electrodes. In particular, the electrode array comprises individual electrodes which are typically connected to the preconditioning unit by means of wires. Specifically, the preprocessing of the EEG signal by the preprocessing device may include filtering, amplifying, analog-to-digital converting, and the like. More specifically, the preprocessing device may preprocess the EEG signals by including filters, amplifiers, analog-to-digital converters, and the like.

The digital circuit board is connected with the acquisition circuit board and comprises a microprocessing unit (MCU), the microprocessing unit (MCU) is connected with the buzzer and the communication circuit, and the microprocessing unit (MCU) is configured to calculate a characteristic value of the preprocessing signal and trigger the buzzer to give an alarm when the characteristic value is greater than a preset characteristic value threshold. Specifically, a preset feature extraction algorithm of the electroencephalogram and EEG signal, such as a common space mode CSP, a wavelet transform DWT, a power spectral density PSD, an AR model, and the like, may be adopted to configure the microprocessing unit MCU, thereby achieving the purpose of calculating the feature value of the preprocessed signal. It should be noted that, in practical application, including but not limited to the above feature extraction algorithm for the electroencephalogram EEG signal, any feature extraction algorithm for the electroencephalogram EEG signal may be used to configure the micro processing unit MCU, so as to obtain a feature value that the micro processing unit MCU is configured to calculate the preprocessed signal, and when the feature value is greater than a preset feature value threshold, trigger the buzzer to alarm.

The PCB printed circuit board, the acquisition circuit board and the digital circuit board are arranged on the PCB printed circuit board. Specifically, the collecting circuit board and the digital circuit board can be fixed on the PCB through bolts by arranging screw holes on the PCB, the collecting circuit board and the digital circuit board. Particularly, the acquisition circuit board and the digital circuit board can both adopt flexible printed circuit boards, and the acquisition circuit board and the digital circuit board can be better fixed on the PCB through the arrangement of the flexible printed circuit boards. More specifically, the positions of the acquisition circuit board and the digital circuit board on the PCB can be set as desired. For example, the acquisition circuit board and the digital circuit board may be mounted on both sides of the PCB with reference to fig. 1, or mounted on the same side of the PCB with reference to fig. 2. Through the installation mode, the effect of reducing the circuit size by arranging the circuits on the same structure is achieved, and the purpose of reducing the weight of the device with the electroencephalogram EEG signal acquisition function is achieved.

During the application, can be with the device that has EEG signal acquisition function that this application embodiment provided to wearable equipment such as safety helmet, sleep appearance, or other equipment that have the detection function.

Specifically, the communication circuit may include at least one of a bluetooth chip, a WiFi chip, a LoRa chip, a ZigBee chip, and the like. During the application, microprocessing unit MCU can carry out data transmission through mobile terminal such as bluetooth chip and cell-phone, flat board, still can carry out data transmission through wiFi chip and high in the clouds server.

In some embodiments, the pre-processing device comprises: the noise sensor, first preprocessing circuit, second preprocessing circuit and controller. The first preprocessing circuit comprises a first filter circuit and a first drying circuit which are connected with each other, the first filter circuit is connected with the electrode array, and the first drying circuit is connected with the microprocessing unit MCU; the second preprocessing circuit comprises a second filter circuit and a second drying circuit which are connected with each other, the second drying circuit is connected with the electrode array, and the second filter circuit is connected with the microprocessing unit MCU; a controller connected to the noise sensor, the first pre-processing circuit, and the second pre-processing circuit, the controller configured to: when the noise value detected by the noise sensor is not larger than a preset noise threshold value, a first preprocessing circuit is started to process the EEG signals detected by the electrode array; and when the noise value detected by the noise sensor is larger than a preset noise threshold value, starting a second preprocessing circuit to process the EEG signal detected by the electrode array. When the noise sensor, the first preprocessing circuit and the second preprocessing circuit are applied, the noise sensor, the first preprocessing circuit and the second preprocessing circuit can be connected with the controller through wires. The EEG signal preprocessing circuit comprises a first preprocessor circuit, a second preprocessor circuit, a first noise filter, a second noise filter, a third noise filter, a fourth noise filter, a fifth noise filter, a sixth noise filter, a fifth noise filter, a sixth noise filter, a fourth noise filter, a fifth noise filter, a fourth noise filter, a.

In some embodiments, the acquisition circuit board and the digital circuit board are mounted on both sides of the PCB as shown in fig. 1.

In some embodiments, a first recess 1031 and a second recess 1032 may be added to the PCB 103 with reference to fig. 3 to collect circuit boards mounted in the first recess and digital circuit boards mounted in the second recess. Through the arrangement of the groove, the surface of the PCB after installation is smoother, and the damage of the PCB, especially the surface bulge caused by the external force, due to the action of the external force under the condition that the surface of the PCB after installation is provided with the bulge is avoided.

In some embodiments, as shown in fig. 4, the digital circuit board includes a micro processing unit MCU 10, the micro processing unit is connected to the buzzer 11, the communication circuit 12, and the heart rate blood oxygen sensor 13, wherein the micro processing unit MCU is configured to: calculating a characteristic value of the preprocessing signal, and triggering a buzzer to alarm when the characteristic value is greater than a preset characteristic value threshold; when the heart rate blood oxygen value detected by the heart rate blood oxygen sensor is larger than the preset heart rate blood oxygen threshold value, the buzzer is triggered to alarm. According to the EEG signal acquisition device and the EEG signal acquisition method, the user is reminded through the setting of the buzzer, and therefore the use experience of the user on the device with the EEG signal acquisition function is improved. Specifically, the heart rate sensor may be connected to the micro processing unit MCU through a wire.

In some embodiments, on the basis that the digital circuit board includes a micro processing unit MCU 10, the micro processing unit is connected to the buzzer 11 and the heart rate blood oxygen sensor 13 of the communication circuit 12, an acceleration sensor, a sound pickup, a data storage and a library storage may also be included, which are connected to the micro processing unit MCU. When the device is applied, the motion states of a user wearing the device with the EEG signal acquisition function provided by the embodiment of the application, such as lying, standing and the like, are detected through the acceleration sensor; the sound pickup can collect the voice of the user, so that the micro processing unit MCU can perform corresponding processing according to the collected voice, for example, the micro processing unit MCU calls the stored music or voice prompt data from the music library storage to play. When the device is applied, the micro processing unit MCU stores the acquired data (such as EEG signals, psychological blood oxygen values, acceleration values and the like) to the data memory for analysis and use.

In some embodiments, the apparatus further comprises a first power supply circuit configured to supply power to the acquisition circuit board and a second power supply circuit configured to supply power to the digital circuit board. Specifically, the first power supply circuit and the second power supply circuit may share one set of battery, and may also use respective batteries, that is, different batteries are used to supply power to the acquisition circuit board and the digital circuit board, respectively.

While the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.