摘要
为实现微重力环境下气液两相流的液滴检测,采用49×49点阵的金属网格传感器,基于网格电极间的局部瞬时电导变化原理,实现管道截面液滴分布和个数统计。将控制采集和数据处理分别交由FPGA和DSP并行处理的设计方式,解决了系统实时在线测量问题。实验结果表明:该装置可实时捕捉流速为9.0 m/s、直径不小于5 mm的液滴或液团,克服了常规检测方法的不足,为评价水气分离装置的工作性能提供了可靠依据。
To realize drop detection of air-liquid two-phase flow in microgravity,equipment is designed use metal mesh sensor with dot matrix of 49 × 49,drop distribution and number statistics of pipe cross section are realized based on principle of local instantaneous conductivity changes between mesh electrodes. The design mode that control collection and data processing separately taken up by FPGA and DSP processing concurrently,which can resolve the problem of real-time online measurement. The experiment results show that,the equipment can realtime capture liquid drops or group with velocity of 9. 0 m / s and diameter within 5 mm,it overcomes shortcomings of general detection method,and provides reliable basis for evaluating working performance of water gas separation device.
出处
《传感器与微系统》
CSCD
2016年第5期60-63,共4页
Transducer and Microsystem Technologies
关键词
气液两相流
微重力
液滴检测
金属网格传感器
局部瞬时电导
gas-liquid two-phase flow
microgravity
drop detection
metal mesh sensor
local instantaneous conductivity
作者简介
李凤玲（1972-），女，黑龙江德都人，硕士，研究方向为模式识别与智能系统。
