磁力仪光源和光电检测技术研究

发布时间：2018-06-23 08:58

  本文选题：地磁导航 + 磁力仪　； 参考：《南京理工大学》2017年硕士论文

【摘要】：地磁导航是一种无源自主导航,具有抗干扰能力强、精度高和无累积误差的优点,在军用和民用方面都有极大的应用前景。地磁信号匹配是地磁导航技术应用关键技术之一,而磁场测量仪器的性能是测量信号与地磁基准图实现精确匹配的主要制约因素。本文以磁力仪为研究对象,对其电源和光电检测技术进行研究,主要完成的工作及研究成果包括:1)在深入研究原子磁力仪的工作原理基础上,分析了铷原子在磁场中的塞曼效应和光抽运过程,基于原子能级原理和光电转换原理,推导了光电探测器检测电压与磁场之间的解析式。2)对激光稳频技术进行研究,通过控制激光管的工作温度获取所需激光波长,通过稳定电流来稳定激光波长。本文针对磁力仪光源和光电检测技术两个方面,设计了基于精度±0.1℃的温度控制电路和基于精度±0.1mA的恒流源控制电路,实现了温度39.5±0.1℃的控制和电流35.0±0.1mA的恒流控制,并设计了光电检测电路。3)采用ZEMAX软件对非球面透镜进行优化和分析,确定了准直透镜和聚光透镜的参数,设计了系统的光路部分,搭建了双光路差动检测系统。通过电路实验和光学实验,验证了电路设计与光路设计的正确性,以及磁力仪光源部分和光电检测部分的可行性。
[Abstract]:Geomagnetic navigation is a passive autonomous navigation with strong anti-jamming capability, high precision and no accumulated error. It has great application prospects in both military and civil fields. Geomagnetic signal matching is one of the key technologies in the application of geomagnetic navigation technology, and the performance of magnetic field measurement instrument is the main factor that restricts the accurate matching between the measured signal and the geomagnetic reference map. In this paper, the magnetometer is taken as the object of study, and its power supply and optoelectronic detection technology are studied. The main work and research results include: 1) on the basis of studying the working principle of atomic magnetometer in depth. The Zeeman effect and optical pumping process of rubidium atom in magnetic field are analyzed. Based on the principle of atomic level and photoelectric conversion, the analytical formula .2 between the detection voltage and magnetic field of photodetector is derived. The required laser wavelength is obtained by controlling the operating temperature of the laser tube, and the laser wavelength is stabilized by stabilizing the current. In this paper, a temperature control circuit based on precision 卤0.1 鈩，

本文编号：2056591