摘要
本文设计了光泵磁力仪的后端测频与中央控制系统,利用高速CPLD来测定拉莫尔频率;使用ARM嵌入式中央处理器来实现测量数据的转换、显示与存储,处理器的富余端口同时完成前端拉莫尔频率跟踪锁定环路的辅助捕获功能.实验表明系统各项功能正常,失锁后的重新捕获时间小于5s.相比于原型样机GB-4A,设备的复杂性和体积大大减小,因此在无人机航空磁测等领域具有良好的应用前景.
This paper designs the hind frequency measurement and central control system.The Larmor frequency is measured by high speed CPLD.The ARM embedded central processor realizes transform ation display and storage of the data.And the redundant ports perform the auxiliary catching function for the frontend Larmor frequency catching and tracking loop.The experiment shows that every function of the system works well and the renewed catching time is less than 5s after unlocking.Compared with archetypal machine GB-4A,the bulk and complexity of the equipment decrease greatly.All of the above shows the favourable applied prospects in UAV aviation magnetism measurement.
出处
《安徽师范大学学报（自然科学版）》
CAS
北大核心
2012年第3期230-233,共4页
Journal of Anhui Normal University(Natural Science)
基金
安徽省软科学研究计划项目(10030503073)
四川省科技攻关项目(M110106012009FZ0148)
安徽省教育厅重点项目(kj2011z153)
关键词
光泵磁力仪
高速CPLD
ARM处理器
辅助捕获
optical pumping magnetometer
high speed CPLD
ARM processor
auxiliary catching
