基于FPGA的X射线脉冲信号数据采集系统设计  

Design of X-ray pulse signal data acquisition system based on FPGA

作　　者：倪建军[1] 董龙[1] 龚志鹏[1] 翟国芳[1] 

机构地区：[1]北京空间机电研究所,北京100094

出　　处：《电子测量技术》2016年第2期126-130,共5页Electronic Measurement Technology

摘　　要：为研究脉冲星X射线辐射脉冲信号的特点,需要记录X射线脉冲信号的上升沿时刻与脉冲信号峰值。设计了基于FPGA的X射线脉冲信号数据采集系统。重点介绍了数据采集系统的组成、功能及硬件设计。其中,系统采用11片多通道高速串行ADC用于X射线脉冲信号的采集,利用数字电位计及高压电源模块实现探测器偏置电压的精细调节,利用数据存储校正电路等完成采集数据的校正处理,并可通过图像传输电路完成图像数据的传输与显示以及系统功能的调试。与上位机通信,完成指令的收发控制,调整采集系统的工作状态。To study the key characteristics of X-ray pulsars,recording X-ray pulse signal rising edge of time and peak value,the FPGA-based X-ray pulse signal data acquisition system was designed.This paper mainly introduced the composition of data acquisition system,the function,as well as the hardware design.Among them,the system adopts eleven multi-channel ADCs for X-ray pulse signal acquisition,using digital potentiometer and high voltage power module for the fine adjustment of detectors reverse bias voltage,using data storage and correction circuit to complete the data correction processing,and through the image transition circuit to accomplish the image data transmission,display and system debugging.Connected with host computer,complete instructions transceiver control,adjust the working state,and feedback working state information.

关 键 词：X射线脉冲信号 FPGA 多通道串行ADC 高压电源控制 

分 类 号：TN7[电子电信—电路与系统]