光学精密工程2019，Vol.27Issue(1)：101-109,9.DOI:10.3788/OPE.20192701.0101
高阈值长脉宽响应的微流体惯性开关
Microfluidic inertial switch with high threshold and long pulse-width response
摘要
Abstract
In order to realize the power management of intelligent weapons, a microfluidic inertial switch with a high threshold and long pulse width response was proposed for two typical acceleration signals of launch and drop.The switch is mainly composed of a circular microchannel and a three-stage capillary valve that has the ability to identify the two typical accelerations and can be reliably connected under the action of the normal launching acceleration.First, the design concept of the switch was introduced, and the working principle of the switch was analyzed.Next, the prototype was fabricated by wet etching and magnetron sputtering.Finally, the function of the switch was verified by finite element simulation and prototype experiments.The finite element simulation analysis shows that the switch remains disconnected under the drop load (amplitude:12 000 g, pulse width:300μs) and is reliably connected under the rear load (amplitude:20 000 g, pulse width:4 ms).The threshold of the switch is 3 300 g.The experimental results show that the switch remains disconnected under the serv-ice drop load (amplitude:12 800 g, pulse width:219μs).The static threshold of the switch is3 257.2～3 317.3 g.The theoretical threshold of the switch is 3 590.9 g, and the theoretical formula can predict the threshold of the switch with a higher accuracy.The results show that the designed switch can identify two typical accelerations and realize reliable connections.关键词
微流体惯性开关/毛细阀/高阈值/长脉宽Key words
microfluidic inertial switch/capillary valve/high threshold/long pulse-width分类
信息技术与安全科学引用本文复制引用
李嘉杰,聂伟荣,刘国伟..高阈值长脉宽响应的微流体惯性开关[J].光学精密工程,2019,27(1):101-109,9.基金项目
国家自然科学基金资助项目 (No.51475245) （No.51475245）
