用于闪电瞬态电场测量的高速采集系统设计  

High speed data acquisition system for lightning transient electric field measurement

作　　者：周龙 季鑫源[2] 仲晔[3] 张志鹏[3] 

机构地区：[1]大连市雷电防护中心,大连116011 [2]南京信息工程大学电子与信息工程学院,南京210044 [3]南京信息工程大学大气物理学院,南京210044

出　　处：《气象水文海洋仪器》2014年第1期82-86,共5页Meteorological,Hydrological and Marine Instruments

摘　　要：利用A／D转换芯片AD9057和基于Pockels效应的闪电电场传感器设计了一个闪电瞬态电场测量的高速采集系统，给出了高速采集系统的硬件电路和软件程序设计流程图。该系统主要包括：闪电电场传感、高速A／D转换、数据存储、数据处理。通过对闪电电场高速采集系统的硬件和软件设计，解决了数据采集过程中存在的高速A／D转换的速度与低速智能管理的速度不匹配问题，实现了带宽为O～10MHz的闪电瞬态电场信号采集。A high speed data acquisition system for lightning transient electric field measurement is designed by using the A/D conversion chip AD9057 and the lightning electric field sensor based on Pockels effect. And the hardware circuit and software flow diagram of this high speed acquisition system are given out. This system mainly includes lightning electric field sensor, high speed A/D conversion, data storage and data processing. Based on the design of hardware and software for the lightning field high speed acquisition system,the problem of speed matching between high speed A/D converting and low speed intelligent management in the process of data acquisition has been solved. Then,the signal acquisition of lightning transient electric field in the bandwidth of 0-10MHz is achieved.

关 键 词：闪电电场 AD9057 高速数据采集 

分 类 号：X851[环境科学与工程—环境工程]