【摘要】 介绍了集成光学芯片、光纤质量块简谐振子和可编程片上系统(SOPC)混合集成光学加速度计的设计方法。采用迈克尔逊干涉方法实现加速度信号光相位调制,综合交流相位跟踪零差补偿技术(PTAC)和合成外差信号解调技术(SHSD)补偿误差并解调出加速度信号,应用SOPC技术设计和实现数字信号处理(DSP)系统,同时实现DSP和智能化数据传输接口并行工作,使系统实时、线性地跟踪到加速度信号。系统设计灵敏度达4.8902V/g。实际测量灵敏度达4.62V/g,工作频带10~1066Hz。更多还原

【Abstract】 It is described that the hybrid-integrated optical accelerometer is made of integrated opotical chip, the harmonic oscillator composed of fiber optic proof mass and system programmable on chip. The acceleration signal is modulated to optical phase by Micheson interference device. At the same time, the error is compensated by alternating current phase tracking homodyne compensation scheme(PTAC) and the acceleration signal is demodulated by Synthetic-heterodyne signal demodulation(SHSD). Finally the digital signal proseccing system is designed with SOPC technology. And DSP and intelligent data communication interface run in parallel. As a result, a real time and linear acceleration signal is detected, and the system has a sensitivity of 4.890 2 V/g. When practically measured, its sensitivity is 4.62 V/g and the system can works between 10 Hz and 1 066 Hz.更多还原