摘要
目的:把软件鉴相方法应用于磁感应断层成像(Magnetic Induction Tomography,MIT)检测系统中,建立MIT软件鉴相平台。方法:使用LabVIEW对数据采集卡编程,实现信号的采集,并使用频谱分析法、相关法以及相敏检测法提取参考信号与检测信号的相位差,实现软件鉴相。结果:形成了一整套包括数据采集、处理和显示的软件鉴相平台。结论:软件鉴相能够应用到单通道MIT相位差检测系统中,建立的软件鉴相平台能够精确地测量相位差。
Objective To establish software platform for phase detection in Magnetic Induction Tomography （MIT） by using software phase detection method in MIT measuring system. Methods The data acquisition board was programmed with LabVIEW to realize the signal acquisition. The frequency spectrum analysis method, correlation method and phase sensitive detection method were used to extract the phase difference. Results The software platform with data acquisition, processing and display was established. Conclusion The software phase detection methods can be successfully used in single channel MIT phase detection system and the established software platform can detect the phase difference accurately.[Chinese Medical Equipment Journal, 2009,30 （3） ： 1-3,11 ]
出处
《医疗卫生装备》
CAS
2009年第3期1-3,11,共4页
Chinese Medical Equipment Journal
基金
全军"十一五"科研基金项目(06MA224)
关键词
磁感应断层成像
软件鉴相
频谱分析法
相关法
相敏检测法
magnetic induction tomography
digital phase detection
frequency spectrum analysis method
correlationmethod
phase sensitive detection method
