基于时间提取的冲击波超压测试系统设计  

Design of Shock Wave Over-Pressure System Based on Time Extraction

作　　者：张晋文[1] 王文廉[1,2] 黄晓敏[1] 赵晨阳[1] 张志杰[1,2] 

机构地区：[1]中北大学仪器科学与动态测试教育部重点实验室,山西太原030051 [2]中北大学电子测试国家重点实验室,山西太原030051

出　　处：《测控技术》2015年第4期47-50,共4页Measurement & Control Technology

基　　金：国家自然科学基金资助项目(61106077)

摘　　要：针对爆炸试验环境的冲击波超压测试,提出一种基于:FPGA控制与Flash存储的可多次触发冲击波超压存储测试系统。将大容量的Flash存储分割成多个数据存储空间,以实现系统多次触发和采集存储。相比常规的单次触发存储测试系统,可防止误触发引起的测试失效,提高测试的可靠性。并利用绝对时间来提取有效信号的数据段,提高了数据回收效率,适合多点的分布式测试。该系统通过动态特性标定,并在爆炸试验中获得有效数据。试验结果表明,该系统具有很好的可靠性。A multiple-trigger test system is presented which uses FPGA to control and Flash to store data.The memory space of large-capacity Flash is divided into parts to achieve multiple trigger and data acquisition and storage.Compared with conventional test systems with single-trigger,this system can prevent false triggering and improve the reliability of the test.By using the absolute time to extract the valid signal segment,the recovery efficiency of reading data is improved.This character of the system makes it applicable for distributed test with multiple points.The system is calibrated by the dynamic characteristics,and valid data are obtained in the explosion tests.The experimental results show that the system has a good reliability.

关 键 词：爆炸场 超压测试 重触发 爆炸时刻提取 

分 类 号：TM932[电气工程—电力电子与电力传动]