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一个数字多通道磁通门信号处理系统的设计与实现

Design and Realization of a Digital Multichannel Fluxgate Signal Processing System
作者:Shiwei LiuShibin Liu 作者单位:School of Electronics and Information,Northwestern Polytechnical University Xi'an,Shaanxi,P.R.China;School of Electronics and Information,Northwestern Polytechnical University Xi'an,Shaanxi,P.R.China 加工时间:2014-06-26 信息来源:科技报告(Other) 索取原文[5 页]
关键词:通信;磁通门;FPGA;高密度脂蛋白
摘 要:Addressing drawbacks of analog components and questions of multi-channel fluxgate signal operation,a FPGA (Field Programmable Gate Array) based signal processing system is designed.Three copies of sub modules compose the whole system,each of which exclusively processes one of three outputs of the fluxgate sensor.A "Phase-Sensitive-Rectification & Low-Pass-Filtering" circuit structure is employed in the processing module,through which the fluxgate signal harmonics are extracted and converted into direct quantities according to detected magnetic intensities.Firstly designed in HDL (Hardware Description Language),afterward configurated in a FPGA chip,finally tested by processing outputs of a fluxgate sensor probe in real-time,the functionality of the designed system is verified.With inherent advantages,this FPGA based design is much reliable over temperature; by processing signals not time-sharingly but synchronously,its working speed is excellently high.
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