基于ARM的双轴电磁计程仪技术研究  

On biaxial electromagnetic log based on ARM

作　　者：毕彦 张德会 BI Yan;ZHANG De-hui(Underwater Acoustic Navigation System Army Representative Room in Shanghai,Shanghai 200136, China;CSSC Marine Technology Co.,Ltd., Acoustic Navigation Department, Shanghai 200136, China)

机构地区：[1]驻上海地区水声导航系统军事代表室,上海200136 [2]中船航海科技有限责任公司水声导航室,上海200136

出　　处：《船舶》2017年第6期67-73,共7页Ship & Boat

摘　　要：为提升电磁计程仪综合测速性能,设计了一种基于ARM控制器的利用电磁感应定律获得船舶两维航行速度的测速系统。以ARM控制器及其外围电路为控制和速度解算核心,配以专用自检模块、信号放大模块、低通滤波模块、调相模块、相敏解调模块、数据采集模块、ARM数据处理及控制模块、显控模块、激磁模块以及电源模块。通过软件,利用曲线逼近法进行误差校正,系统稳定且操作方便。A velocity measuring system of the two-dimensional ship speed is designed by using the electromagnetic induction principle based on ARM controller,in order to improve the performance of the electromagnetic log.The ARM controller and its peripheral circuit are the core of the control and the speed calculation with special selfcheck module,signal amplifier module,low pass filter module,phase modulation module,phase demodulation module,data collection module,ARM data processing and control module,display control module,excitation module and power module.The error can be corrected by using the curve approximation method in the software,leading to the steady system with convenient operation.

关 键 词：相敏解调 双轴 信号放大 调相 

分 类 号：U666.152[交通运输工程—船舶及航道工程]