基于铁电存储技术的火炮膛内温度测试系统设计

Design of artillery bore temperature test system based on FRAM technology

针对火炮膛内火药燃气温度测试的特殊环境,设计一种适用于膛内高温、高压、高冲击环境的放入式膛内瞬态温度测试系统。考虑到恶劣的测试环境,该测试系统采用接触式测温技术,使用Nanmac-E12快速响应型热电偶对火炮膛内的火药燃气温度进行测量。在硬件设计上,该测试系统使用了嵌入铁电存储(FRAM)技术的主控芯片,利用铁电存储技术拥有近乎无限擦写周期的特点,将FRAM与循环存储的方式相结合,使得该测试系统在拥有非易失性的基础上,能够运用循环存储的方式将有效数据存储到内置的铁电存储器中,此设计方式相较于使用FLASH存储器可以提高测试系统在恶劣环境下有效数据的捕获率。系统测试与相关模拟试验表明,该测试系统能以100 kHz的采样频率采集数据,具有体积小、稳定性好、功耗低等特点,适用于火炮膛内火药燃气温度的测试。

Aiming at the special environment of the gunpowder gas temperature test in the artillery bore,a built-in bore transient temperature test system suitable for the high temperature,high pressure and high impact environment in the bore is designed.In consideration of the harsh test environment of the test system,the contact temperature measurement technology is adopted and Nanmac-E12 quick-response thermocouple is used to measure the gunpowder gas temperature in the artillery bore.In terms of hardware design,a main control chip using the embedded ferroelectric random access memory(FRAM)technology is adopted.The ferroelectric storage technology with the characteristics of almost infinite erasing and writing cycles is used in the test system.The combination of FRAM and cyclic storage can make the test system store the effective data in the built-in ferroelectric memory by cyclic storage and have the non-volatile characteristic.In comparison with the Flash memory,the design method can improve the effective data capture rate of the test system in harsh environments.The results of the system tests and related simulation tests show that the test system can collect data at a sampling frequency of 100 kHz,has the characteristics of small size,good stability and low power consumption,and is suitable for testing of the gunpowder gas temperature in the artillery bore.