Electroencephalogram amplifier with host module convenient to replace

Abstract

The utility model provides an electroencephalogram amplifier with a host module convenient to replace, which belongs to the technical field of signal processing equipment and comprises an electroencephalogram amplifier base and a host module which are independently arranged. The electroencephalogram amplifier base is provided with an electroencephalogram electrode and a dry electrode which are used for collecting human body electroencephalogram signals and uploading the human body electroencephalogram signals to the host module; a first magnet, a second magnet, a connector plug and a connector socket are arranged in the electroencephalogram amplifier base and the host module, so that stable electric connection and mechanical connection are formed between the host module and the electroencephalogram amplifier base. The electroencephalogram amplifier base and the host module are modularly designed, so that the host module can be independently replaced, the maintenance cost and the time cost are reduced, a user can replace host modules with different configurations according to needs so as to adapt to different research or clinical requirements, and the whole equipment can be replaced by replacing the host module instead of replacing the whole equipment. And the service life of the base and other parts is prolonged, and the use value of the equipment is improved.

Description

Technical Field

[0001] This utility model belongs to the field of signal processing equipment technology, and in particular relates to an EEG amplifier that facilitates the replacement of the host module. Background Technology

[0002] With the deepening of research in neuroscience and cognitive science, electroencephalograms (EEGs) play a crucial role in scientific research and clinical applications. EEGs collect and analyze weak electrical signals generated by the cerebral cortex, providing important evidence for revealing brain function, cognitive processes, and disease diagnosis. However, most existing EEGs adopt an integrated structure, meaning the base and main unit are fixedly connected and cannot be replaced separately. For example, a utility model patent with the name "EEG Amplifier" and patent number CN221710208U describes an integrated EEG amplifier. This design has several drawbacks:

[0003] 1. High maintenance costs: If the main module fails, the entire module needs to be replaced, resulting in high maintenance costs.

[0004] 2. Difficulty in upgrading: With the continuous advancement of technology, the performance and functions of the host module need to be continuously upgraded, but the integrated design makes the upgrade complex and expensive.

[0005] 3. Poor flexibility: Different research or clinical needs may require different configurations of host modules, and the integrated design limits the flexibility of the equipment.

[0006] Therefore, there is an urgent need for an EEG amplifier that facilitates the replacement of the host module, in order to improve the ease of maintenance, upgrade flexibility and cost-effectiveness of the equipment. Utility Model Content

[0007] In view of the above-mentioned problems in the prior art, the present invention aims to provide an EEG amplifier that facilitates the replacement of the host module, thereby solving the problem that most existing EEG amplifiers adopt an integrated structure, resulting in poor flexibility of use.

[0008] To achieve the above-mentioned objectives, the technical solution adopted by this utility model is as follows:

[0009] An EEG amplifier with an easily replaceable host module is provided, comprising an independently configured EEG amplifier base and a host module. The outer wall of the EEG amplifier base has a mounting groove containing a connector plug. The EEG amplifier base has multiple electrode wires, each with at least one EEG electrode for acquiring human brain signals. The host module is disposed within the mounting groove and has a connector socket electrically connected to the connector plug. A first magnet and a second magnet, magnetically connected to each other, are respectively disposed within the EEG amplifier base and the host module.

[0010] The basic principle of this invention, a conveniently replaceable main unit module EEG amplifier, is as follows: When using the EEG amplifier, different main units are first selected according to different research or clinical needs. The selected main unit module is then fixed in the mounting groove on the EEG amplifier base and electrically connected to the base via a connector plug and connector socket. Due to the placement of the first and second magnets, a stable electrical and mechanical connection is formed between the main unit module and the EEG amplifier base, allowing EEG signals to be transmitted to the main unit module for processing via EEG electrodes. When the main unit module needs to be replaced, simply remove the old main unit module from the EEG amplifier base and insert the new main unit module into the mounting groove, securing it magnetically. The entire process is simple and quick, requiring no complete replacement of the device, thus reducing maintenance costs and upgrade difficulty.

[0011] Furthermore, both the EEG amplifier base and the main unit module are equipped with magnet fixing slots, which are used to install the first magnet and the second magnet.

[0012] Furthermore, a wearing device is provided on the EEG amplifier base. The wearing device is used to fix the EEG amplifier base to the human head. The wearing device allows the entire EEG amplifier to be worn on the human head. The wearing device can be a regular hat, an elastic net cap, or a fixing bandage, and there are no specific restrictions.

[0013] Furthermore, multiple dry electrodes are positioned on the contact surface between the EEG amplifier base and the human head. One end of each dry electrode is in contact with the skin of the human head to acquire electrical signals from the skin. Dry electrodes offer advantages such as eliminating the need for conductive gel, simplifying operation, applicability to various environments and populations, signal amplification and impedance reduction, adaptability to different scalp conditions, and reduced preparation time for data recording. The combination of multiple dry electrodes and multiple EEG electrodes enables multi-directional and multi-angle acquisition of human EEG signals, improving acquisition efficiency.

[0014] Furthermore, the host module has a power supply and a first circuit board electrically connected to the power supply. The first circuit board integrates a signal conditioning module, a signal conversion module, a wireless transmission module, and a connector socket. The EEG amplifier base has a second circuit board, which is electrically connected to a connector plug, multiple electrode wires, and multiple dry electrodes.

[0015] The beneficial effects of this utility model are as follows: This utility model provides an EEG amplifier with an easy-to-replace main unit module. Through the modular design of the EEG amplifier base and the main unit module, the main unit module can be replaced separately, reducing maintenance costs and time costs. Users can replace the main unit module with different configurations as needed to adapt to different research or clinical needs. By replacing the main unit module instead of replacing the entire device, the service life of components such as the base is extended, and the use value of the device is improved. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of an EEG amplifier that is easy to replace with a host module and worn on the human head.

[0017] Figure 2 A three-dimensional structural diagram of the EEG amplifier base and main unit module in their assembled state.

[0018] Figure 3 This is a three-dimensional structural diagram of the EEG amplifier base and main unit module in their disassembled state.

[0019] Figure 4 A cross-sectional view of the EEG amplifier base and main unit module in their assembled state.

[0020] The components include: 1. EEG amplifier base; 2. Main unit module; 3. Mounting groove; 4. Connector plug; 5. Electrode wire; 6. EEG electrode; 7. Connector socket; 8. First magnet; 9. Second magnet; 10. Wearable device; 11. Dry electrode; 12. First circuit board; 13. Second circuit board. Detailed Implementation

[0021] The specific embodiments of this utility model are described below to enable those skilled in the art to understand this utility model. However, it should be understood that this utility model is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of this utility model as defined and determined by the appended claims, these changes are obvious. All inventions utilizing the concept of this utility model are protected.

[0022] like Figures 1-4As shown, this utility model provides an EEG amplifier that facilitates the replacement of the host module. It includes an independently configured EEG amplifier base 1 and a host module 2. The outer wall of the EEG amplifier base 1 is provided with a mounting groove 3, and a connector plug 4 is provided in the mounting groove 3. The EEG amplifier base 1 is provided with multiple electrode wires 5, and each electrode wire 5 is provided with at least one EEG electrode 6 for collecting human brain signals. The host module 2 is disposed in the mounting groove 3, and the host module 2 is provided with a connector socket 7 that is electrically connected to the connector plug 4. The interior of both the EEG amplifier base 1 and the host module 2 is provided with magnet fixing slots, and a first magnet 8 and a second magnet 9 that are magnetically connected to each other are respectively provided in the two fixing slots.

[0023] Preferably, but not limited to, the EEG amplifier base 1 is provided with a wearing device 10. The wearing device 10 is used to fix the EEG amplifier base 1 to the human head. The wearing device 10 enables the entire EEG amplifier to be worn on the human head. The wearing device 10 can be a regular hat, an elastic net cap, or a fixing bandage, and no specific restrictions are made here.

[0024] Multiple dry electrodes 11 are disposed on the contact surface between the EEG amplifier base 1 and the human head. One end of each dry electrode 11 is in contact with the skin of the human head to acquire electrical signals from the skin. The dry electrodes 11 have advantages such as eliminating the need for conductive gel, simplifying operation, being suitable for various environments and populations, amplifying signals and reducing impedance, adapting to different scalp conditions, and reducing the preparation time for data recording. The combination of multiple dry electrodes 11 and multiple EEG electrodes 6 enables multi-directional and multi-angle acquisition of human EEG signals, improving acquisition efficiency.

[0025] The host module 2 internally houses a power supply and a first circuit board 12 electrically connected to the power supply. The first circuit board 12 integrates a signal conditioning module, a signal conversion module, a wireless transmission module, and a connector socket 7. The EEG amplifier base 1 internally houses a second circuit board 13, which is electrically connected to a connector plug 4, multiple electrode wires 5, and multiple dry electrodes 11. EEG signals collected by the multiple EEG electrodes 6 and dry electrodes 11 are transmitted via the second circuit board 13 to the signal conditioning module. The signal conditioning module filters out high-frequency interference from the EEG signals using hardware filtering. The signal conversion module performs analog-to-digital conversion on the filtered signal and transmits the converted digital signal to the wireless transmission module. The wireless transmission module receives the converted digital signal and transmits it wirelessly to the host computer. The signal conditioning module, signal conversion module, and wireless transmission module can utilize existing circuits capable of performing their respective functions.

[0026] When using an EEG amplifier, different main unit modules 2 are first selected according to different research or clinical needs. The selected main unit module 2 is then fixed in the mounting groove 3 on the EEG amplifier base 1 and electrically connected to the base 1 via connector plug 4 and connector socket 7. Due to the placement of the first magnet 8 and the second magnet 9, a stable electrical and mechanical connection is formed between the main unit module 2 and the EEG amplifier base 1, allowing EEG signals to be transmitted to the main unit module 2 for processing via EEG electrodes 6. When it is necessary to replace the main unit module 2, simply remove the old main unit module 2 from the EEG amplifier base 1 and insert the new main unit module 2 into the mounting groove 3, securing it magnetically. The entire process is simple and quick, requiring no complete replacement of the equipment, reducing maintenance costs and upgrade difficulty.

[0027] In summary, this utility model provides an EEG amplifier with an easily replaceable main unit module. Through the modular design of the EEG amplifier base 1 and the main unit module 2, the main unit module 2 can be replaced separately, reducing maintenance and time costs. Users can replace the main unit module 2 with different configurations as needed to adapt to different research or clinical needs. By replacing the main unit module 2 instead of replacing the entire device, the service life of components such as the base is extended, and the value of the device is improved.

Claims

1. An EEG amplifier with an easily replaceable host module, characterized in that, The device includes an independently configured EEG amplifier base and a main unit module. The outer wall of the EEG amplifier base has a mounting groove containing a connector plug. The EEG amplifier base has multiple electrode wires, each with at least one EEG electrode for collecting human brainwave signals. The main unit module is located within the mounting groove and has a connector socket electrically connected to the connector plug. The EEG amplifier base and the main unit module each contain a first magnet and a second magnet that are magnetically connected to each other.

2. The EEG amplifier with easily replaceable host module according to claim 1, characterized in that, Both the EEG amplifier base and the main unit module have magnet fixing slots inside.

3. The EEG amplifier with easy replacement of the host module according to claim 1, characterized in that, The EEG amplifier base is equipped with a wearing device, which is used to fix the EEG amplifier base to the human head.

4. The EEG amplifier with easy replacement of the host module according to claim 1, characterized in that, The EEG amplifier base has multiple dry electrodes on its contact surface with the human head. One end of each of the multiple dry electrodes is in contact with the skin on the surface of the human head to acquire electrical signals from the skin on the surface of the human head.

5. The EEG amplifier with easy replacement of the host module according to claim 2, characterized in that, The host module has a power supply and a first circuit board electrically connected to the power supply. The first circuit board integrates a signal conditioning module, a signal conversion module, a wireless transmission module, and the connector socket. The EEG amplifier base has a second circuit board inside. The second circuit board is electrically connected to the connector plug, multiple electrode wires, and multiple dry electrodes.

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