摘要
提出了一种连续波多通道可穿戴式功能近红外光谱成像系统的前端设计,用于实时同步监测脑功能活动。在该系统中,选择性能良好驱动简单的双波长LED作为光源,光源驱动电路采用可编程集成芯片,实现光源调制及时分复用,有效区分来自不同通道的信号,同时也去除了环境光等背景噪声的干扰。并利用光电二极管、ADS1299和GS1011完成信号的采集处理以及传输,实现一款低功耗、高精度、无线传输的功能近红外光谱成像系统前端。
A front-end design of a continuous wave multi-channel wearable near-infrared spectroscopy imaging system is proposed for real-time synchronization monitoring of brain function activities. In this system,dual-wavelength LED with good performance and simple driving is selected as light source,the light source driver circuit uses programmable integrated chip to achieve light source modulation and time division multiplexing,effectively distinguishes the signals from different channels,also removes the interference of ambient light and other background noise.Using photodiodes,ADS1299 and GS1011 to complete the signal acquisition,processing and transmission,and a low power consumption,high precision and wireless transmission function near infrared spectroscopy imaging system front-end is achieved.
出处
《微型机与应用》
2017年第15期35-37,52,共4页
Microcomputer & Its Applications
基金
国家自然科学基金(61550110252)
上海市科学技术委员会资助项目(14441900300)
