基于FPGA的铯光泵磁力仪频率计设计  

Design of Frequency Meter for the Optically Pumped Cesium Vapor Magnetometer Based on FPGA

作　　者：张谨[1] 宗发保[1] 邹鹏毅[1] 陈恩[1] 

机构地区：[1]中国船舶重工集团公司第七一五研究所,浙江杭州310012

出　　处：《海洋测绘》2015年第2期80-82,共3页Hydrographic Surveying and Charting

基　　金：国家863计划(2013AA8112005;2014AA06A611)

摘　　要：铯光泵磁力仪需要通过测量频率换算得到磁场值。以FPGA(现场可编程门阵列)为核心,采用VHDL(超高速集成电路硬件描述语言)语言设计等精度频率计,完成了对铯光泵磁力仪输出频率的采集。该等精度频率计包含整形模块、FPGA测量模块、单片机模块。经测试,该等精度频率计计数分辨率为0.007Hz,对应磁场值为2p T。The optically pumped cesium vapor magnetometer needs to get magnetic field values by translation of measured frequency. Focusing on FPGA,this paper uses VHDL language design precision frequency meter,to complete the output frequency collection of the optically pumped cesium vapor magnetometer. Such equal precision frequency meter includes shaping module,FPGA measurement module,and microcontroller module.After testing,the equal precision frequency meter＇s count resolution reaches to 0.007 Hz,and the corresponding magnetic field value is 2p T.

关 键 词：铯光泵磁力仪 频率测量 等精度 VHDL FPGA 

分 类 号：P716.8[天文地球—海洋科学]