电容层析成象传感器负灵敏度区影响的研究  

STUDY ON NEGATIVE SENSING AREA INFLUENCE OF ELECTRICAL CAPACITANCE TOMOGRAPHIC TRANSDUCER

作　　者：许会[1] 王师[1] 

机构地区：[1]东北大学信息科学与工程学院,沈阳110006

出　　处：《无损检测》1999年第6期263-266,共4页Nondestructive Testing

摘　　要：电介质的电极化效应导致电容层析成象传感器负灵敏度区出现。以实例说明负灵敏度区内某些部位介质出现导致电容量减小、抵消敏感区内的部分信息,降低测量分辨力,并讨论传感器阵列设计的原则。Negative sensing areas of capacitance tomographic transducer arrays resulted from the dielectric po-larization effect of electrostatic field. It was shown by figures that the presence of components in negative sensing areas seemed to cancel out information in positive sensing areas to some extent and the resolution of transducer de-scended. The design principles of transducer arrays were also discussed.

关 键 词：层析成象 电容 传感器 灵敏度 分辨力 质量流量 

分 类 号：TP213.023[自动化与计算机技术—检测技术与自动化装置]