摘要
采用以单片机为核心的控制电路和PID控制算法 ,对SLED的温度和驱动电流进行高精度的控制 ,使工作温度可在 0℃～ 30℃设定范围内稳定到± 0 .0 1℃以内 ,驱动电流在 2 0mA～ 2 0 0mA设定范围内可稳定在± 0 .0 2mA以内 。
The stability of optical sources is required in many fiber optic sensor systems.This paper describes a high precision constant temperature and constant current control system for SLED, which is based on a singlechip computer.The system is able to control the temperature variation within ±0.01℃ and current drift under ±0.02mA by utilizing PID control algorithm, which meets the demands of the reliability and stability of the optical sources for sensor systems.
出处
《激光技术》
CAS
CSCD
北大核心
2004年第2期193-195,共3页
Laser Technology
基金
国家自然科学基金海外青年合作基金资助项目 (6 0 0 2 85 0 5 )
关键词
超亮度发光二极管
恒温
恒流
PID
单片机
SLED
constant temperature
constant current
PID
singlechip computer
