Eeg analysis module embeddable in a stereo headset

Abstract

The present technical solution relates to the field of computing. A device for measuring a brain electroencephalogram comprises the following, connected to one another by a noise-immune cable: an electronic circuit board, on which are arranged an analog-to-digital converter with a sampling frequency of 250 Hz, a quartz resonator of a Real Time Clock (RTC), a read-only memory and a Bluetooth communication module; four spring-loaded dry pogo pin electrodes in the form of a comb of spring-loaded gold-plated pin contacts; a spring-loaded dry pogo pin reference electrode (REF); two spring-loaded dry pogo pin ground electrodes (GND); and a module for activating / deactivating the device for measuring a brain electroencephalogram, wherein the device is designed to be embeddable in an over-ear stereo headset.

Description

[0001] STEREO HEADSET BUILT-IN EEG ANALYSIS MODULE

[0002] AREA OF TECHNOLOGY

[0003] The utility model relates to the field of computer technology, in particular, to a device for measuring the electroencephalogram of the brain.

[0004] LEVEL OF TECHNOLOGY

[0005] The closest analogue of the present technical solution is the information source US 2016345901 A1, published 01.12.2016. This solution discloses a portable brain activity monitor with electromagnetic brain activity sensors that are held on a person's head using a partially circumferential headband. The partially circumferential headband goes around the lower back surface of the person's head, from one ear to the other, and has front ends that extend upward from the person's ears along the sides of the person's forehead.

[0006] The proposed technical solution is aimed at eliminating the shortcomings of the current level of technology and differs from previously known ones in that the implementation of the device for measuring the electroencephalogram of the brain allows the device to be built into any standard-sized stereo headset. Additionally, it should be noted that due to the design of the Pogo Pin electrodes for taking the EEG signal, high-quality and effective data collection from hairy areas of the head is achieved without any preliminary preparation (use of saline and / or gel).

[0007] DISCLOSURE OF UTILITY MODEL

[0008] The objective of the claimed utility model is to develop a device for measuring the electroencephalogram of the brain.

[0009] The technical result of the claimed utility model is to improve the quality and efficiency of EEG data collection from areas of the head covered with hair, without any preliminary preparation (use of saline solution and / or gel).

[0010] The stated technical result is achieved by means of a device for measuring the electroencephalogram of the brain, containing, connected to each other by a noise-protected cable: an electronic board with the following placed on it: an analog-to-digital converter with a sampling frequency of 250 Hz, a Real Time Clock (RTC) quartz resonator, a read-only memory device and a Bluetooth communication module;

[0011] 4 spring-loaded dry Pogo Pin electrodes in the form of a comb of pin spring-loaded gold-plated contacts; dry spring-loaded reference electrode Pogo Pin: REF;

[0012] 2 dry spring-loaded Pogo Pin electrodes: GND grounding; on / off module for the device for measuring the electroencephalogram of the brain, while the device is designed with the possibility of being built into a full-size stereo headset.

[0013] BRIEF DESCRIPTION OF DRAWINGS

[0014] The utility model will be more understandable from a description that is not limiting in nature and is provided with references to the accompanying drawings, which show:

[0015] Fig. 1 illustrates an example of the arrangement of elements of a device for measuring the electroencephalogram of the brain on headphones.

[0016] Fig. 2 illustrates a device for measuring the electroencephalogram of the brain and its elements.

[0017] IMPLEMENTATION OF A UTILITY MODEL

[0018] In the detailed description of the implementation of the utility model given below, numerous implementation details are provided, intended to provide a clear understanding of the present utility model. However, it will be obvious to a person skilled in the subject area how the present utility model can be used, both with and without these implementation details. In other cases, well-known methods, procedures and components have not been described in detail, so as not to unnecessarily complicate the understanding of the features of the present utility model.

[0019] In addition, it will be clear from the above presentation that the utility model is not limited to the given implementation. Numerous possible modifications, changes, variations and replacements, preserving the essence and form of the present utility model, will be obvious to specialists qualified in the subject area.

[0020] This technical solution is a single, separate device for measuring the electroencephalogram of the brain. The device is built into a stereo headset and serves for high-quality and effective measurement of the user's physiological parameters. The device can be built into any full-size stereo headset, of a standard type. A special case of application is the Neiry Headphones device. This technical solution has the following positive technical effects.

[0021] - Thanks to the design of Pogo Pin electrodes for EEG signal acquisition, high-quality and efficient data acquisition is achieved from hairy areas of the head without any preliminary preparation (use of saline and / or gel).

[0022] - Due to the location of the electrodes for recording EEG in the positions C3 / C4 / A1 / A2 and reference CZ, high-quality recording of the EEG signal and confident detection of Alpha, Beta rhythms of the brain are achieved.

[0023] - The existing implementation allows you to integrate the EEG data analysis module into any full-size stereo headset (standard type).

[0024] The device is designed to be placed on the user's head and used in conjunction with software installed on a computing device or telephone, and allows for real-time recording of biopotentials generated by the brain (EEG).

[0025] The device connects to the end device via Bluetooth and transmits the collected data to it. Then the user software receives, filters and classifies the data, turning it into user-friendly metrics. The device for measuring the electroencephalogram of the brain is intended for individual use.

[0026] Figure 1 illustrates an example of the arrangement of elements of a device for measuring the electroencephalogram of the brain on a stereo headset (headphones), where: pos. 101 - electronic board; pos. 102 - dry electrode Pogo Pin: A1; pos. 103 - dry electrode Pogo Pin: ground GND; pos. 104 - dry electrode Pogo Pin: C3; pos. 105 - dry electrode Pogo Pin: REF;

[0027] Item 106 - dry electrode Pogo Pin: C4; Item 107 - dry electrode Pogo Pin: ground (GND); Item 108 - dry electrode Pogo Pin: A2; Item 109 - on / off module.

[0028] Figure 2 illustrates a device for measuring the electroencephalogram of the brain and its elements, where: pos. 101 - electronic board; pos. 102 - dry electrode Pogo Pin: A1; pos. 103 - dry electrode Pogo Pin: ground (GND); pos. 104 - dry electrode Pogo Pin: C3; pos. 105 - dry electrode Pogo Pin: REF;

[0029] Item 106 - dry electrode Pogo Pin: C4; Item 107 - dry electrode Pogo Pin: ground GND; Item 108 - dry electrode Pogo Pin: A2; Item 109 - on / off module.

[0030] All elements of the device are connected to each other by a noise-protected cable with low input resistance. The same battery as in the stereo headset can be used to power the device for measuring the electroencephalogram (the connection can be made during the installation process).

[0031] The electronic board implements the following functional capabilities.

[0032] 1. Obtaining an electroencephalogram (EEG). The signal is recorded by digitalizing the signal with the ADC module at a frequency of 250 Hz, from leads that are dry Pogo Pin electrodes (25 pin: A1 (102), C3 (104), C4 (106), A2 (108)) in the form of a comb of pin spring-loaded gold-plated contacts, as well as 2 ground electrodes (GND (103, 107)) and a reference electrode (REF (105)), which are also dry Pogo Pin electrodes. The electrodes are located according to the extended electrode arrangement scheme, according to the 10-20 system. The designation of channel names is strictly regulated by the International Federation of Clinical Neurophysiology.

[0033] 2. Transfer of collected and packaged data via a BLE 5.0 communication module to a computing device (e.g. a mobile phone and / or personal computer).

[0034] The device for measuring the electroencephalogram of the brain has one on / off button for simultaneously starting the electronic board of the neuroamplifier and the stereo headset, while for the purpose of synchronization, an on / off module (109) connected to the electronic board of the neuroamplifier and the board of the stereo headset is used, which is taken out from the electronic board.

[0035] The device for measuring the electroencephalogram of the brain supports the following operating modes:

[0036] - resistance measurement - to determine the quality of electrode adhesion,

[0037] - sending values ​​of the built-in battery charge,

[0038] - measurement of data (EEG signal), - charging and completion of charging of the device.

[0039] Example of implementation.

[0040] After pressing the device power button located on the on / off module board and closing the contacts, the battery simultaneously supplies the reference voltage to the electronic board of the neuroamplifier and its modules, and the voltage is also supplied to the stereo headset board. All modules are initialized, then the microprogram is read from the ROM module, according to which the device subsequently functions.

[0041] In the "default" mode, the device is ready for operation and mode switching (impedance measurement, EEG signal measurement).

[0042] To put the device into pairing mode with a personal computer or mobile device, press the power button for 2 seconds, this will start the firmware "pairing" mode and activate the corresponding Bluetooth module mode.

[0043] After pairing via Bluetooth with the target device (personal computer or mobile device), its Bluetooth MAC address data will be transferred by the Bluetooth module to the ROM chip and saved (up to 10 devices). Thus, the pairing procedure will not be required again the next time you turn it on.

[0044] To turn the power on and off again, press and hold the power button for 1 second.

[0045] In the impedance measurement mode, the ROM, ADC, RTC (quartz resonator), Bluetooth modules are activated, and the potential difference between the target (C3, C4, A1, A2) and reference (REF) electrodes is measured to determine the quality of the electrode-skin contact. The measurement results are transmitted via the Bluetooth module via the communication channel to the target device in kOhm units.

[0046] In the EEG signal measurement mode, the ROM, ADC, RTC (quartz resonator), Bluetooth modules are activated and measurements of the potential difference between the target and reference electrodes are performed. The ADC polls the target electrodes at a frequency of 250 Hz, then this data is sent to the Bluetooth module for sending to the target device.

[0047] Switching between modes is done by sending commands to the device via the Bluetooth protocol.

[0048] If the device is turned on and is in the "standby" mode (none of the measurement modes are selected), then following the firmware mode, the device will turn off after 15 minutes to save battery power. In these application materials, a preferred disclosure of the implementation of the claimed technical solution was presented, which should not be used as limiting other, private embodiments of its implementation that do not go beyond the scope of the requested scope of legal protection and are obvious to specialists in the relevant field of technology.

Claims

Formula 1. A device for measuring the electroencephalogram of the brain, comprising, connected to each other by a noise-protected cable: an electronic board with the following placed on it: an analog-to-digital converter with a sampling frequency of 250 Hz, a Real Time Clock (RTC) quartz resonator, a read-only memory device and a Bluetooth communication module; 4 spring-loaded dry Pogo Pin electrodes in the form of a comb of pin spring-loaded gold-plated contacts; dry spring-loaded reference electrode Pogo Pin: REF; 2 dry spring-loaded Pogo Pin electrodes: GND grounding; on / off module for the device for measuring the electroencephalogram of the brain, while the device is designed with the possibility of being built into a full-size stereo headset.

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