CN105167769B - Earphone type electroencephalogram acquisition device - Google Patents

Abstract

The invention discloses an earphone type electroencephalogram acquisition device which comprises an ear canal electrode used for acquiring ear canal electroencephalograms, wherein a clamping position on the ear canal electrode is connected with a clamping position on a metal connector to realize electric conduction, the ear canal electrode is clamped on a shell to realize a fixing effect, the metal connector is inserted on a circuit board and welded with a first through hole of the circuit board to realize electric conduction, and a processing circuit used for receiving signals acquired from the electrode and processing the signals is arranged on the circuit board. The Bluetooth earphone has a simple and compact structure, meets the requirements of collecting brain waves from the auditory meatus, has the functions of light weight, small volume, comfortable wearing and Bluetooth earphone, and controls the distance of brain wave signals transmitted from a human body to the circuit board within a reasonable range, so that the signal transmission distortion is small, the circuit board structure is stable, the signal processing stability is good, the production is simple and the cost is low.

Description

A headphone-type EEG acquisition device

technical field

The invention relates to an EEG acquisition device, in particular to an earphone type EEG acquisition device.

Background technique

In the current wearable brain wave acquisition devices on the market, different electrodes extend from the main circuit board and touch different positions on the human body, and there are special devices for fixing the entire acquisition device on the human body, which makes it troublesome to wear. And too many additional devices will lead to a decline in the aesthetics of wearing. For example, there are currently some methods that extend several electrodes from the main circuit board, and the electrodes and the main circuit board are made of elastically deformable materials, and the scalp is clamped from all directions by several electrodes to achieve fixation; The design uses elastically deformable materials to clamp the head across a certain distance like a headband. These methods will cause the entire acquisition device to occupy too much scalp area, affecting the aesthetics and comfort of wearing. In addition, the electrodes are separated from the main body. The longer the board extends, the more the signal transmission is distorted. Therefore, it is urgent to design a simple and compact structure that can directly use the main circuit board, the main shell itself and the electrodes themselves as fixing devices, reduce unnecessary structures as much as possible, reduce the signal transmission distance from the electrodes to the main board, and reduce the need for wearing steps; and can collect brain waves from the ear canal instead of the scalp, reducing the impact of the collection device on the appearance of the human body when worn, and can also realize the function of a Bluetooth headset.

Contents of the invention

In order to solve the technical problems involved in the background technology, the present invention provides an earphone type EEG acquisition device.

The technical solution of the present invention is: an earphone-type EEG collection device, including an ear canal electrode for collecting ear canal brain waves, and the locking position on the ear canal electrode is connected with the locking position on the metal connector to realize electrical conduction , the ear canal electrode is clamped on the shell to achieve a fixed effect, the metal connector is inserted on the circuit board and welded to the first through hole of the circuit board to achieve electrical communication, and the circuit board is provided with a The signal collected by the electrodes and the processing circuit for processing the signal.

As a preference, it also includes a reference voltage electrode for obtaining a reference voltage, and the reference voltage electrode has pins plugged into the circuit board and welded to the second through hole of the circuit board to achieve electrical communication.

As a preference, it also includes a right leg drive electrode for reducing human body noise and improving the signal-to-noise ratio, the right leg drive electrode is in contact with a metal connector to achieve electrical conduction, and the metal connector is plugged into the circuit board and The third through hole of the circuit board is soldered to realize electrical connection.

As a preference, the right leg driving electrode has built-in magnets for attracting built-in magnets arranged in the main housing.

As a preference, the earphone circuit board is also included, and the earphone circuit board is connected with the loudspeaker and installed in the casing.

As a preference, it also includes an auricle fixer, which is half-wrapped on the ear canal electrode to separate the auricle skin from the ear canal electrode, and is used to fix the ear canal electrode through the protrusion on it .

As a preference, the ear canal electrode is provided with a perforation from the circuit board to the ear canal, which can be used to transmit the sound of the horn in the casing and improve the softness of the electrode.

As a preference, one end of the metal connector in contact with the ear canal electrode is a ring-shaped wrapping structure to increase the contact area of the metal surface, thereby reducing signal loss, and the ear canal electrode can be connected around the metal of the ring-shaped wrapping structure. The device rotates, which is convenient for users to replace the left and right ears.

As a preference, the driving electrode of the right leg is in a curved shape, extending from the shell to wrap around the earlobe of the human body.

As a preference, the ear canal electrode is made of soft conductive material.

In summary, the present invention has the following advantages:

The structure of the present invention is concise and compact, which satisfies the need to collect brain waves from the ear canal, and also satisfies light weight, small size, comfortable wearing, and the function of Bluetooth earphones, and controls the transmission distance of brain wave signals from the human body to the circuit board within a reasonable range. Within the range, the signal transmission distortion is small, the circuit board structure is stable, the signal processing stability is good, and the production is simple and the cost is low. At the same time, it is relatively easy to wear, just insert the ear canal electrode into the ear canal, and use the right leg to drive the electrode to clamp the earlobe.

Description of drawings

Fig. 1 is the schematic diagram of present embodiment when in use;

Fig. 2 is the side schematic diagram of present embodiment;

Fig. 3 is a cross-sectional schematic view of the present embodiment;

Fig. 4 is the three-dimensional schematic view of this embodiment;

FIG. 5 is a schematic structural diagram of the ear canal electrode in FIG. 2 .

detailed description

The present invention will be further described below with reference to the accompanying drawings.

As shown in Figures 1-5, an earphone-type EEG collection device includes an ear canal electrode 2 for collecting ear canal brain waves, the card position 21 on the ear canal electrode 2 and the card on the metal connector 7 71 to achieve electrical conduction, the ear canal electrode 2 is clamped on the shell 1 to achieve a fixed function, the metal connector 7 is inserted on the circuit board 5 and welded to the first through hole 51 of the circuit board to achieve electrical continuity. In communication, the circuit board 5 is provided with a processing circuit for receiving signals collected from the electrodes and processing the signals. It also includes a reference voltage electrode 3 for obtaining a reference voltage. The reference voltage electrode 3 has pins 31 inserted on the circuit board 5 and welded to the second through hole 52 of the circuit board to achieve electrical communication. It also includes a right leg drive electrode 4 for reducing human body noise and improving the signal-to-noise ratio. The right leg drive electrode 4 is in contact with a metal connector 8 to achieve electrical conduction. The metal connector 8 is plugged into the circuit board 5 and connected to the The third through hole 53 of the circuit board is soldered to realize electrical connection. The right leg driving electrode 4 has a built-in magnet 41 for attracting the built-in magnet 12 arranged in the main housing 1 . It also includes an earphone circuit board 6 , which is connected to the speaker 61 and installed in the housing 1 . It also includes an auricle fixer 9, which is half-wrapped on the ear canal electrode 2 to separate the auricle skin from the ear canal electrode 2, and is used to fix the ear canal electrode through the protrusion 91 on it 2. The ear canal electrode 2 is provided with a perforation 22 from the circuit board 5 to the ear canal, which can be used to transmit the sound of the horn 61 in the shell 1 and improve the softness of the electrode. One end of the metal connector 7 in contact with the ear canal electrode 2 is a ring-shaped wrapping structure to increase the contact area of the metal surface, thereby reducing signal loss, and the ear canal electrode 2 can surround the metal connector 7 of the ring-shaped wrapping structure Rotate, it is convenient for the user to replace the left and right ears. The driving electrode 4 of the right leg is in a curved shape, extending from the shell 1 to wrap around the earlobe of the human body. The ear canal electrode 2 is made of soft conductive material.

The earphone-type EEG acquisition device of the present invention is relatively simple to wear, and only needs to insert the ear canal electrode 2 into the ear canal, and use the right leg to drive the electrode 4 to clamp the earlobe.

The above description is only an explanation of the present invention, so that those of ordinary skill in the art can implement the scheme completely, but it is not a limitation of the present invention. Those skilled in the art can make non-inventive changes to this embodiment as needed after reading this description. Contributed modifications, these are non-inventive modifications. But as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

Claims (3)

1. A kind of 1. earphone-type brain wave acquisition device, it is characterised in that：Including the duct electrode 2 for gathering duct brain wave, institute State the realization that with the screens 71 on metal connector 7 is connected of the screens 21 on duct electrode 2 to conduct, the duct electrode 2 blocks The effect that fixation is realized on shell 1 is connected on, the metal connector 7 is plugged on circuit board 5 and 51 phases of perforation of circuit board first Welding is electrically connected with realizing, the circuit board 5 is provided with the signal for being used for receiving to come from electrode collection and handled at the signal Circuits；Also include head circuit plate 6, the head circuit plate 6 is connected with loudspeaker 61 and in shell 1；Also include Auricle fixator 9, the auricle fixator 9 half, which is wrapped on duct electrode 2, to be used to separate skin of pinna and duct electrode 2, and It is used to fix duct electrode 2 by the protrusion 91 above it；The duct electrode 2 is provided with the perforation from circuit board 5 to duct 22, available for the sound of 1 loudspeaker 61 in propagation shell and improve electrode pliability；The metal contacted with duct electrode 2 The one end of connector 7 is ring-type package structure, to increase metal covering contact area, so as to reduce the loss of signal, the duct electrode 2 The metal connector 7 that ring-type package structure can be surrounded rotates, and convenient use person changes left and right ear and used；Also include being used to obtain ginseng Examine the reference voltage electrode 3 of voltage, the reference voltage electrode 3 has pin 31 to be plugged on circuit board 5 to wear with circuit board second The phase welding of hole 52 is electrically connected with realizing；Also include being used to reduce the right leg drive electrode 4 that human body noise improves signal to noise ratio, the right side Leg driving electrodes 4 contact with metal connector 8 to be conducted with realizing, the metal connector 8 is plugged on circuit board 5 and circuit Plate the 3rd perforates the welding of 53 phases to realize electric connection；The right leg drive electrode 4 is built-in with magnet 41 and is arranged on master for attraction Built-in magnet 12 in shell 1.
2. A kind of 2. earphone-type brain wave acquisition device according to claim 1, it is characterised in that：The right leg drive electrode 4 For curved shape, extended out from shell 1 and wrap the ear-lobe of human body.
3. A kind of 3. earphone-type brain wave acquisition device according to claim 1, it is characterised in that：The duct electrode 2 is soft Matter conductive material is made.