基于多重触发和负延迟的炮口冲击波存储测试

摘要

For the low efficiency of muzzle blast wave overpressure test ,a muzzle shock wave testing method based on multiple internal trigger was put forward in this paper.The system consists of FPGA,flash and wire-less console,data storage capacity was 20 M byte,the number of multiple triggers was programmable,which could be reprogrammed 10 times at most.With 6 internal trigger level threshold,data read length could be se-lected from 1 to 20 Mbyte.The simulation and experimental results showed that the method greatly reduced the workload of test operation,improved the efficiency of the muzzle blast test,made up the shortcomings of tradi-tional shockwave testing methods.it had the features of reliable,simple operation,strong applicability.%针对目前炮口冲击波超压测试效率低的问题,提出基于多重触发和负延迟技术的炮口冲击波存储测试方法。该方法主要由模数转换模块、现场可编程门阵列(FPGA)、闪存模块和无线控制台构成,数据存储容量可达20 MB,重触发次数可编程最多为10次,6个内触发电平阈值可设置,数据读取长度在1~20 MB 内可选择。仿真和试验结果表明该方法大大减小了试验操作的工作量,提高了炮口冲击波测试效率,弥补了传统冲击波存储测试方法的缺点,同时此方法具有稳定可靠、操作简单、适用性强、采集数据完整等特点,具有良好的应用前景。