中北大学学报（自然科学版）2025，Vol.46Issue(2)：148-156,9.DOI:10.62756/jnuc.issn.1673-3193.2024.07.0023
具有高精度时空定位的动爆冲击波测试系统
Highly Accurate Spatio-Temporal Localization Shockwave Test System for Dynamic Explosive Environments
徐泽辉 1秦建 1王玉 1王文廉1
作者信息
- 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
- 折叠
摘要
Abstract
Aiming at the need of high precision measurement of shock wave spatio-temporal distribution in dynamic explosion environment,a high precision spatio-temporal positioning distributed test system based on Global Navigation Satellite System(GNSS)synchronous timing and Real-Time Kinematic(RTK)differential positioning technology was designed.The system used FPGA as the control core,and combined with memory test technology to realize the automatic recording of blast wave signal,and obtained the high-precision spatio-temporal information of each test node through GNSS and RTK technology to realize the accurate spatio-temporal distribution measurement of dynamic explosion wave.Time synchronization accuracy verification and field explosion test were carried out.In time accuracy verification,the synchronization errors of different test nodes were all within 100 ns.In the field explosion test,eight test nodes were set up at different locations for data acquisition.Each node collected high-precision spatial position information and time data through RTK module,which realized real-time position tracking and time synchronization of nodes.The test results show that the peak value of node overpressure along the direction of explosive movement is the highest,reaching 122.15 kPa,and the node pressure in the vertical and reverse directions is significantly weakened.At the same time,according to the arrival time of the shock wave front recorded by each node,the shock wave propagation velocity has an enhanced effect in the direction of motion.The system realizes high precision spatio-temporal distribution measurement of the shock wave in the dynamic explosion environment,with centimeter-level spatial positioning accuracy and 100 ns time synchronization accuracy.关键词
冲击波测试/时空信息采集/RTK定位/分布式传感网络Key words
shock wave testing/spatio-temporal information acquisition/RTK positioning/distributed sensor network分类
电子信息工程引用本文复制引用
徐泽辉,秦建,王玉,王文廉..具有高精度时空定位的动爆冲击波测试系统[J].中北大学学报（自然科学版）,2025,46(2):148-156,9.
