基于FPGA和单片机的多通道同步触发信号发生器

介绍一种用于固态调制器的多路同步触发脉冲信号发生器。在单片机AT89S52和现场可编程门阵列(FPGA)的控制下,触发信号按多脉冲猝发模式高重复频率输出,并且每个子脉冲的脉宽、频率等参数均可单独实时调制。触发信号系统和高压功率系统之间采用光电同步隔离,降低了高压部分对低压部分的干扰。发生器具有操作方便,信号稳定,多路同步输出等特点。得到最多240路同步信号、最多4脉冲猝发的触发脉冲。

Multi-channel synchronous trigger signal generator based on FPGA and MCU

Solid-state pulsed power is a hotspot in the research of pulsed power.A multi-channel trigger control system,which is applied to the solid-state modulator,has been designed and tested.Under the control of Field Programmable Gate Array(FPGA) and Micro Control Unit(MCU),the trigger signal features a high pulse-repetition rate in burst mode,while the pulse width and frequency of every sub-pulse can be adjusted individually in real time.Between the trigger system and the power system,optoelectronic isolated circuit is adopted to reduce the interference of high power system on the low power system.The generator shows certain distinct advantages as convenient operation,steady run,simultaneous multichannel output and so on.The generator can output 240 synchronic trigger signals at most,and the maximum of 4 pulses burst.The design of the signal generator and the measured data of performance are presented in this paper.