摘要
基于射频导纳电容对流化床固相颗粒浓度的测量,采用传感探头并配置具有一定驱动能力的等位转换隔离电极(等位环),可补偿由于挂料对测量电场产生的边缘损耗,适配专用反馈运算式非电量转换电路,从而降低了对测量结果的影响。射频导纳电容法对颗粒浓度测量主要有断层成像和射频导纳电容探头两种方式。实际测量时,可以针对介质的空间分布情况,采用不同的探针式传感器结构,提高测量的空间分辨力。因此,射频导纳电容传感测量技术是一种较为理想的固相颗粒浓度测量方法。
Based ticles concentration for on the measurement of radio frequency admittance capacitance to solid phase parfluid bed, adopting sensor which has transformation and insulation electrodes with driving capability and equal electric potential （equal electric potential circle）, the marginal loss by reason of material hanging to measurement electric field can be compensated, and by using special feedback operational transformation circuit for non -electricity, the impact on measurement results is reduced. There are mainly two methods of radio frequency admittance capacitance for particles concentration measurement, one is laminar imaging; and the other is radio frequency admittance capacitance sensor. In actual measurement, based on the spatial distribution of medium, different structural probe sensors can be adopted to improve the spatial resolution. So the measurement technology of radio frequency admittance capacitance is nearly an ideal method for solid phase particles concentration measurement.
出处
《宇航计测技术》
CSCD
2009年第2期61-64,共4页
Journal of Astronautic Metrology and Measurement
关键词
固相
颗粒浓度
介电常数
射频导纳
测量系统
Solid phase Particle concentration Dielectric constant Radiofrequency admittance Measurement system
