基于单片机的激光二极管温控系统  

MCU-based Temperature Control System for Laser Diode

作　　者：陈国相[1] 张海明[1] 王晋疆[2] 林久令[1] 

机构地区：[1]天津工业大学理学院,天津300160 [2]天津大学精密仪器与光电子工程学院,天津300072

出　　处：《自动化仪表》2007年第2期53-54,57,共3页Process Automation Instrumentation

摘　　要：激光二极管是一种温度敏感元件,需要保证其工作温度的恒定。介绍了一种基于单片机的激光二极管恒温系统。该系统主要由单片机、温度传感器、D／A转换芯片以及半导体制冷器(TEC)构成,通过软件编程实现了模糊逻辑控制。系统具有体积小、全固态、结构简单等优点,控制精度可达±0．3℃。与传统的PID温控仪相比,该系统具有更高的精度,更好的稳定性,有利于保证激光二极管的正常工作。laser diode is one kind of temperature sensitive components. It is necessary to assure its operation temperature. A MCU-based laser diode temperature control system is introduced. The system is mainly composed of single chip computer, temperature sensor, D/A converter chip and thermal electronic cooler （ TEC ）. Fuzzy logic control is implemented through software programming. The system features compact, fully solid, and simple in structure as well as control accuracy up to ±0. 3℃. Comparing with traditional PID temperature controller, the system is more orecise, stable, and suitable for operating laser diodes.

关 键 词：半导体制冷器 模糊控制 激光二极管 

分 类 号：TP368.1[自动化与计算机技术—计算机系统结构]