基于抽点存储的空布水雷入水冲击测试技术研究

靳鸿 祖静

振动与冲击 ›› 2009, Vol. 28 ›› Issue (4) : 194-197.

PDF(1118 KB)
PDF(1118 KB)
振动与冲击 ›› 2009, Vol. 28 ›› Issue (4) : 194-197.
论文

基于抽点存储的空布水雷入水冲击测试技术研究

  • 靳鸿 祖静
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Airdropped MinesWater Entry Acceleration Measurement Technology Base on Interval Data Storage

  • Hong Jin Jing Zu
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文章历史 +

摘要

空布水雷利用击水冲击执行某些装置的可靠动作,空布全过程的加速度变化规律对系统设计是重要的参考依据。空布水雷在投放、开伞、下降、击水冲击等过程中会产生缓变和冲击加速度信号,恒定频率采集时将导致存储空间溢出,受体积和功耗限制,传统的数据压缩方法在微型存储测试系统上无法实现。论文针对上述问题提出了一种可以在CPLD上实现的变间隔抽点存储算法,它通过分析高速采样后的数据变化来动态调整数据存储时间间隔,在低存储容量下实现了缓变和冲击信号的完整采集。利用此算法设计的空布水雷加速度测试仪,经模拟、空投等试验,可靠、准确获取了水雷在空布过程的加速度变化规律,该算法也可以应用于其它动态参数测试系统中。

Abstract

Impact acceleration is a vital parameter to airdropped mine system design, which has strong relation to the mechanical parts’ action. Airdropped mine’s drop, parachute release, water entry will generate slow and fast accelerate signals. Overrun of data memory will occur with constant frequency sample. Traditional data compression methods can not be used in a tiny storage test and measurement system due to its limited hardware and power supply. The paper introduces a variable time interval of data storage algorithm which can be fit into a low power CPLD chip. The algorithm analyzes data’s change from a ADC at high speed sampling, and changes the time interval of data storage automatically. It reduces the data storage capacity while keep enough information for both slow and fast accelerate signals. An airdropped mine’s accelerate build-in measurement system based on this algorithm has been build. Test results show that it works well and can be used for other dynamic measurement applications

关键词

空布水雷 入水冲击 存储测试 抽点存储

Key words

Airdropped mine / Water entry acceleration / Storage test and measurement / variable time interval data storage

引用本文

导出引用
靳鸿 祖静. 基于抽点存储的空布水雷入水冲击测试技术研究[J]. 振动与冲击, 2009, 28(4): 194-197
Hong Jin Jing Zu. Airdropped MinesWater Entry Acceleration Measurement Technology Base on Interval Data Storage[J]. Journal of Vibration and Shock, 2009, 28(4): 194-197

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