BCI Smart Glasses With Flexible EEG and fNIRS Electrodes
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Solution Overview
Problem
Existing brain-computer interface devices are bulky and inconvenient for long-term wear due to the need for head-mounted equipment and electrodes.
Innovation Solution
A cognitive accessory combining a brain-computer interface with smart glasses, featuring in-ear EEG electrodes, flexible electrodes in the nose pad and temples, miniature fNIRS probes, binocular RGB camera, motion sensors, audio sensors, and an embedded processor, all integrated into a lightweight magnesium alloy frame with detachable power modules and ergonomic design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional head-mounted EEG devices are used to obtain brain signals, then measurement precision is improved, but device complexity and weight increase making them inconvenient for long-term wear
Solution Approach 1:
The patent combines EEG electrode functionality with smart glasses temples and nose pads, merging brain signal acquisition with a conventional wearable accessory. The EEG electrodes are integrated into the temple pieces and nose pad structure, eliminating the need for separate head-mounted EEG devices while maintaining signal acquisition capability.
Solution Approach 2:
The smart glasses temples serve multiple functions: structural support for the glasses, housing for EEG electrodes, and integration with fNIRS probes. This multi-functionality reduces overall device complexity while maintaining measurement precision through the unified design.
2Adaptability or versatility
If multiple brain monitoring components (EEG electrodes, fNIRS probes) are integrated into smart glasses, then functionality is improved, but weight and comfort for long-term wear deteriorate
Solution Approach 1:
The patent uses flexible printed circuit boards (FPC) to connect EEG electrodes and fNIRS probes within the temple structure. These flexible circuits allow compact integration of multiple components while maintaining a lightweight, adaptable form factor that conforms to the user's head shape without excessive weight.
Solution Approach 2:
The patent nests multiple functional components (EEG electrodes, fNIRS probes, FPC circuits) within the existing temple structure of the smart glasses. This nesting approach maximizes functionality while minimizing additional weight by utilizing the existing structural framework.
3Measurement precision
If EEG electrodes require secure contact with the scalp, then measurement precision is improved, but wearing comfort and ease of operation deteriorate
Solution Approach 1:
The patent applies conductive gel or saline-soaked sponge materials specifically at the electrode-skin contact points on the temples and nose pad, while the rest of the temple structure remains lightweight and comfortable. This localized approach ensures good electrical contact for signal quality without requiring the entire device to be heavy or tight-fitting.
Solution Approach 2:
The temple structure combines lightweight materials (such as plastic or metal alloys) with conductive materials (gel or saline sponges) at the contact points. This composite construction maintains both wearing comfort from the lightweight structure and measurement precision from the conductive contact surfaces.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient, non-invasive EEG and cerebral blood oxygen monitoring, real-time environmental perception, and personalized cognitive state feedback, suitable for long-term wear with enhanced comfort and functionality.
Implementation Method 1
BCI technology provides real-time brainwave monitoring and feedback to users by collecting neural signals such as electroencephalogram (EEG)
Implementation Method 2
BCI technology provides real-time brainwave monitoring and feedback to users by collecting neural signals such as functional near-infrared spectroscopy
Implementation Method 3
the motion sensor comprises an accelerometer, a gyroscope, and a magnetometer, and the motion sensor is configured for head posture compensation and motion artifact elimination
Implementation Method 4
the motion sensor comprises an accelerometer, a gyroscope, and a magnetometer
Data Source
AI summary
The present invention relates to wearable smart devices and neural engineering, disclosing a cognitive accessory that combines a brain-computer interface (BCI) with smart glasses, which includes an in-ear electrode module equipped with a plurality of EEG electrodes, a smart glasses frame with temples on both sides, a nose pad at the bottom of the frame, and two lenses installed on the frame. The smart glasses frame integrates a non-invasive brain signal acquisition module, an environmental perception module, an embedded processor, and an AR display module. The brain signal acquisition module uses flexible electrodes distributed inside the nose pad and the temples. By integrating flexible EEG electrodes and miniature fNIRS probes within the smart glasses frame, users can achieve efficient, non-invasive monitoring of brain electrical activity and cerebral blood oxygenation without wearing traditional complex headgear. This design makes the device more lightweight, comfortable, and convenient for long-term wear.