VIRTUALLY ZERO CROSS-TALK DUAL-FREQUENCY EDDY-CURRENT ANALYZER BASED ON PERSONAL-COMPUTER

被引：3

作者：

ANTONELLI, G ^{[1
]}

BINASCO, F ^{[1
]}

DANESE, G ^{[1
]}

DOTTI, D ^{[1
]}

机构：

[1] UNIV PAVIA,DIPARTIMENTO INFORMAT & SISTEM,I-27100 PAVIA,ITALY

来源：

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 1994年 / 43卷 / 03期

关键词：

D O I：

10.1109/19.293468

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The dual-frequency eddy current technique is a powerful tool for nondestructive testing of conducting materials, well established both for quality control in the manufacturing industry and for inservice inspection of plant components and structures. The common approach aiming at the extraction of two frequency components from a single signal is based on band filtering. A different approach, which contemporaneously carries out component separation and signal rectification, is proposed in this paper; it enables fast measurement response, virtually zero cross-talk, and hardware simplification. The described methodology has been implemented in the form of a card which can be plugged into a personal computer. Together with the managing software, the eddy current card gives the PC all the capabilities of a powerful and versatile eddy current inspection system.

引用

页码：463 / 468

页数：6