In order to solve the problem that many instruments need to trigger simultaneously in fragment test of explosion field,an 8-channel synchronous trigger with remote control function is made.FPGA and STM32 microcontroller are used as the control chip,and appropriate high precision crystal excitation is used as the internal clock source to ensure high precision timing control.The device can realize double channel trigger input,8 channels synchronous trigger output,the logical relationship between the input signals can be set,the pulse width of the output signal can be adjusted.The actual test shows that the delay between the output signal and the input is less than 300 ns,and the synchronization between each output channel is less than 10 ns,with strong synchronization,which can be applied to the actual test to provide synchronous trigger signals for recording equipment,data acquisition system,high-speed camera,radar and other test instruments to ensure the synchronization of the time base.
Key words
FPGA /
MCU /
synchronized trigger /
STM32
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
References
[1] 李军,虎雷,李永明,等.一种高精度可延时同步脉冲产生系统[J].数字技术与应用,2018,36(7):182-184.
[2] 余学锋,杨标,张开维.靶场时统装置同步误差实时校准方法与分析[J].兵器装备工程学报,2017,38(3):2226,76.
[3] 陈峰,王航,眭明.基于时钟相位补偿的同步触发信号产生技术[J].计算机测量与控制,2020,28(5):224228.
[4] Lamonaca Francesco,Carnì Domenico Luca,Grimaldi Domenico.Time coordination of standalone measurement instruments by synchronized triggering[J].ACTA IMEKO,2015,4(3).
[5] 冯元伟,冯宗明.基于FPGA和单片机的多通道同步触发信号发生器[J].信息与电子工程,2012,10(1):110113.
[6] 闫洁,张立锋,刘保杰.基于FPGA的同步触发时序系统设计[J].中国原子能科学研究院年报,2019(1):174175.
[7] 王旭.分布式测试系统时钟同步及触发研究与实现[D].太原:中北大学,2020.
[8] 吴笛.大范围炸点测量同步触发技术研究[D].西安:西安工业大学,2019.
[9] 高平,代刚,郭玉山,等.多路纳秒延时同步脉冲的产生与传输[J].信息与电子工程,2007(2):123125.
[10] 邹虹,纪龙蛰,邢园丁,等.基于FPGA多模时间同步触发系统的研究与设计[J].测试技术学报,2016,30(2):114119.
[11] Tao Yan,Xiucai Zhao,Wenan He,et al.A Synchronous Trigger Method of Parallel Tasks Suitable for Semiconductor Testing[J].Journal of Physics:Conference Series,2019,1168(2).
[12] Feipeng Lin,Huanghui Zhang,Haiming Shao,et al.High Voltage Ratio Measurement Base on Twodigitalmeters External Synchronous Trigger Mode[C]//Proceedings of 2013 3rd International Conference on Advanced Measurement and Test(AMT 2013),2013:845849.
[13] 刘鹏,张斌,李沅,等.基于GPS的破片测速多设备同步触发方法[J].科学技术与工程,2019,19(2):9195.
[14] 武锦辉,刘吉.战斗部静爆场破片参数测试技术发展现状[J].兵器装备工程学报,2019,40(10):104110.
[15] 杜恩武,阳雨妍,江剑,等.基于FPGA的高性能触发控制器设计[J].电子测量技术,2017,40(10):2125.
PDF(1289 KB)
