基于 PSoC 的瞳孔光刺激与测量系统

摘要

瞳孔跟随光刺激的变换检测系统可广泛用于疲劳检测、颅内损伤检测等方面。为实现方便可控的刺激光源生成和光强检测，设计实现基于PSoC（Programmable System on Chip，片上可编程系统）芯片的光刺激与测量系统。以PWM（脉冲宽度调制）的方式驱动LED，PC端设计了应用控制界面，可以调节LED光照刺激的强度频率等参数，并实时获得光强数据。系统实际运用于实时瞳孔参数检测平台，提供稳定可控的光刺激与测量功能。%The pupil light reflex measuring system is widely used in the field of fatigue detection and intracranial injury detection , etc.For the purposes of controlling the stimulated light source and measuring the light intensity conveniently , the paper designs a light stimulation and measurement system based on PSoC ( Programmable System on Chip ) .The method of PWM is used to con-trol LED, and an application on computer is programmed to control the PSoC changing the parameters of LED and gain the data of light intensity .The system is used in a real-time pupil parameter detective platform to provide the adjustable functions of light stimulation and measurement .