高精度组合脉冲激光时序控制系统设计 |
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引用本文: | 黄自江,何衡湘,姜忠明,刘攀,张强,黄凯.高精度组合脉冲激光时序控制系统设计[J].强激光与粒子束,2016,28(12):125005. |
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作者姓名: | 黄自江 何衡湘 姜忠明 刘攀 张强 黄凯 |
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作者单位: | 1.西南技术物理研究所, 成都 61 0041 ; |
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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5 ns~10 ms,最小可调步进为5 ns,延时误差小于1 ns。
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关 键 词: | 脉冲激光 高精度延时 陡上升沿 FPGA ucGUI |
收稿时间: | 2016-06-07 |
Design of high-precision timing control system in combined pulse laser |
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Institution: | 1.Southwest Institute of Technical Physics,Chengdu 610041,China;2.School of Aeronautics and Astronautics,University of Electronic Science and Technology of China,Chengdu 610054,China;3.China Academy of Ordnance Science,Beijing 100089,China |
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Abstract: | 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. |
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