高精度组合脉冲激光时序控制系统设计  

Design of high-precision timing control system in combined pulse laser

作　　者：黄自江 何衡湘[1,2] 姜忠明[3] 刘攀[1] 张强[1] 黄凯[1] 

机构地区：[1]西南技术物理研究所,成都610041 [2]电子科技大学航空航天学院,成都610054 [3]中国兵器科学研究院,北京100089

出　　处：《强激光与粒子束》2016年第12期112-116,共5页High Power Laser and Particle Beams

基　　金：总装备部预研探索创新资助项目(7131455)

摘　　要：在激光等离子体机理的研究中,为实现灵活的界面配置和多路脉冲激光器高精度的时序延时,设计了一种基于微控制器STM32和FPGA的多路时序延时控制系统。重点介绍了基于FPGA的多路ns级时序信号和基于ucGUI的触摸屏界面的设计。另外,采用高速光电隔离技术和高速FET开关电路技术,对驱动电路进行了设计,缩短了输出脉冲上升沿的时间,提高了系统延时精度、驱动能力和抗干扰性能。测试结果表明,该设计每路延时可调,调节范围为5ns^10ms,最小可调步进为5ns,延时误差小于1ns。In order to realize flexible interface setting and high-precision timing control between multi-channel pulse lasers, a multi-channel timing control system was designed based on STM32 and FPGA. This paper mainly introduces the generation of multi-channel nanosecond timing signal based on FPGA and the design of touch panel interface based on ucGUI. The driver circuit was designed using high-speed optical isolation technology and high-speed switch circuit technology, which shortened the rise time of pulse outputs, improved delay precision, driver capability and anti-interference performance. The design ensures that each channel delay can be set with in the range from 5 ns to 10 ms , with minimum step of 5 ns, and precision of the system delay time is less than 1 ns.

关 键 词：脉冲激光 高精度延时 陡上升沿 FPGA UCGUI 

分 类 号：TN24[电子电信—物理电子学] TP29[自动化与计算机技术—检测技术与自动化装置]