摘要
针对光纤光栅传感器反射光信号微弱的特点,采用锁定放大器作为检测放大电路.设计了锁定放大器的硬件电路,通过PROTUS软件仿真,得到了各部分电路的仿真波形图.结果表明,设计的电路作为光纤光栅传感器的检测电路可提高系统的信噪比.
According to the features of FBG sensor,a Lock-in Amplification Circuit is used for weak signal detection.Every hardware circuit is designed based on the Lock-in Amplification Circuit＇s structure.Then all of the circuits are simulated by the PROTUS,and the simulation waveform are given.The simulation result indicates that the system＇s signal-to-noise ratio is improved by adopting this design scheme.
出处
《鞍山师范学院学报》
2010年第6期38-43,共6页
Journal of Anshan Normal University
关键词
带通滤波器
移相电路
相敏检测
PROTUS
Band-pass filter
Phase-shift circuit
Phase sensitivity detection
PROTUS
