介绍基于A3515霍尔元件的交变漏磁检测系统的设计，包括检测系统的组成和测试方法。
The alternative magnetic flux leakage testing system based on A3515 Hall element was introduced, including its composition and operation.
分析了不同类型缺陷的漏磁场分布特征，布置不同方向的检测元件测取不同的缺陷信息；
The characteristics of the magnetic flux leakage of different types of faults were analyzed and the testing elements of various directions were located to get the information of all faults.
介绍了基于漏磁探伤原理的钢管管缝在线检测装置，对装置的励磁磁路结构、磁敏感检测元件及其信号处理作了较详细的分析论述。
The on-line pipe flaw detector with magnetic leakage flux principle is introduced, providing details regarding the exciter circuit structure, magnetic sensors and signal processing.
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