平面式电容传感器阵列测量复合材料技术研究  

Research on technology of composite materials measurement by planar capacitance sensor array

作　　者：郝魁红[1] 范文茹[1] 马敏[1] 李斌[1] 

机构地区：[1]中国民航大学航空自动化学院,天津300300

出　　处：《传感器与微系统》2014年第2期35-38,共4页Transducer and Microsystem Technologies

基　　金：国家自然科学基金青年基金资助项目(61102096);中国民航大学中央高校基金资助项目(ZXH2011C003;ZXH2012P002);中国民航大学教师科研启动基金资助项目(2011QD03S)

摘　　要：基于复合材料及其内部不同损伤具有不同介电特性,采用平面式电容传感器阵列实现可视化无损检测。论述了系统的构成和测量原理,分析了影响测量效果的因素,并设计了信号转换和采集处理电路。基于简单的激励测量模式和共轭梯度算法,对比分析了仿真与实验结果。实验结果验证了基于电容敏感机理的平面式电容传感器阵列对复合材料内部缺陷检测的可行性和有效性。Based on composite materials and various internal injuries have different dielectric properties,visual NDT is carried out by using planar capacitance array sensor.Discuss system constitution and measuring principle,analyze the factors that influence measurement effect and design signal conversion and acquisition and processing circuit.Based on simple excitation-measurement model and conjugate gradient algorithm,comparative analysis on simulation and experimental results are carried out.Experimental results verify the feasibility and effectiveness of internal defect inspection of composite materials by using planar capacitance sensor array based on capacitance sensitive mechanism.

关 键 词：平面式电容阵列传感器 复合材料 电容层析成像 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置]