基于PSoC的瞳孔光刺激与测量系统

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。

Pupil Light Stimulation and Measurement System Based on PSoC

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.