【作者】 黄瑞通；

【导师】 孟克；

【作者基本信息】 哈尔滨工程大学 ， 光学工程， 2005， 硕士

【摘要】 光纤加速度计是一种灵敏度高、动态范围大、抗电磁干扰能力强的新型传感系统,在导航、制导及其它方面起着越来越重要的作用。因此加强光纤加速度计的研究显得尤其重要。 论文详细阐述了相位载波干涉型光纤加速度计的基本原理和PGC零差检测技术。论文论述了检测系统数字化的必要性;提出不同以往的单DSP的解调方案,采用单片机和DSP,通过双口RAM实现双处理器之间的高速数据通信的数字解调方案;说明了硬件和软件开发的工具和系统仿真调试过程。介绍低通滤波器的设计方法和在DSP中数字滤波器的实现方法。 课题完成了采用双处理器的相位载波光纤加速度计的信号数字解调系统,并对系统进行仿真测试,基本达到预期的目标。更多还原

【Abstract】 Optic-fiber accelerometer plays a more and more important role in navigate and guidance with strong anti-interference ability, high sensitiveity,brand dynamic range. So it is very important to strengthen the research on optic-fiber accelerometer. This subject began the work under such a background.The dissertation discusses the principle of interfereometer optic-fiber accelerometer using phase-generated-carrier and the homodyne detection technology in details. The paper analyzes the necessity of digitalization in signal detection system and describes the demodulation scheme that is the demodulation scheme by using MCU and DSP. It’ s also discussed how to design hardware blocks and develop sofewares of Dual-CPU. Realization of high speed data transferring between MCU and DSP is of significance. And the simulation is done in matlab. Moreover, it is discussed how to design low-pass filter and digital filter .We have finished the demodulation scheme and made relative test. The specification attains the anticipated goal basically.更多还原