激光管恒功率驱动电路实现研究  

Analysis of Constant Power Drive Circuit of Laser Tube

作　　者：孙希 SUN Xi(Wuxi Machinery and Electron Branch of Jiangsu Union Technical Institute,Wuxi,Jiangsu,China 214028)

机构地区：[1]江苏联合职业技术学院无锡机电分院,江苏无锡214028

出　　处：《湖南邮电职业技术学院学报》2020年第4期14-17,共4页Journal of Hunan Post and Telecommunication College

基　　金：2020年度江苏省现代教育技术研究立项课题“‘网络直播+教学平台’模式在电类专业课程中的教学有效性研究”(课题编号:2019-R-79234)。

摘　　要：随着激光投线和激光测距类产品的快速推广应用,为保证其中的主要部件半导体激光器LD输出功率的可靠稳定,文章设计了一种半导体激光器的恒功率驱动和功率可调节控制系统,该系统仅以三个三极管作为主要器件,通过组合使用低通滤波、慢启动电路、自反馈和可调节电路实现,通过单片机调整控制信号的PWM占空比来实现功率输出连续可调节、恒功率驱动、激光输出功率异常监测等功能。With the rapid promotion and application of laser line casting and laser ranging products,in order to ensure the reliable and stable output power of the main component semiconductor laser LD,a constant power drive and power adjustable control system for the semiconductor laser was designed.Only three transistors are used as the main components,and the low-pass filter,slow-start circuit,self-feedback and adjustable circuit are used in combination,which can realize the continuous adjustable power output,constant power drive and abnormal laser output power monitoring by adjusting the PWM duty cycle of the control signal through the single-chip microcomputer.

关 键 词：半导体激光器 恒功率驱动 功率可调节 异常监测 

分 类 号：TN248.4[电子电信—物理电子学] TP273[自动化与计算机技术—检测技术与自动化装置]