【摘要】 金属磁记忆检测技术可以快速检测金属构件应力集中区,进行缺陷的早期诊断.为实现构件的缺陷检测,以HMC1022磁阻传感器来获取金属构件表面磁记忆信号,以PIC16F877A为核心,由磁阻传感器、滤波放大电路、单片机、显示器、按键等设计了金属构件缺陷检测系统的硬件电路,并编写了相应的软件.经工件的检测实验,证明了设计的检测系统结果准确可靠.更多还原

【Abstract】 Metal magnetic memory method is used to find stress concentration zone in ferromagnetic material for early diagnosis.Magnetic memory signals on the surface of the metal are obtained by magnetism sensor HMC1022.Testing system of disfigurement in metal is designed with a core of PIC16F877A.The system consists of magnetism sensor,amplifier,single chip microcomputer,display and keyboard.Experiment datas shows the system is effectual.更多还原