摘要
干涉型光纤扰动传感器的输出信号通常很小并伴随着噪声,所以信号调理电路的性能对信号后续处理非常关键。针对干涉型光纤扰动传感器系统,阐述基于OPA132集成运算放大器的前置放大电路和2阶有源带通滤波器的设计方案,给出了电路的基本结构和各部分的元件选择,并用软件Multisim 10对电路进行仿真。结果表明,该电路设计方案可靠实用,基本满足干涉型光纤扰动传感器的应用要求。
As the output signal of interferometric fiber perturbation sensor is usually very weak and goes with noise, the performance of signal conditioning circuit is very important for the further processing of the sensor weak signal. For the interferometric fiber perturbation sensing system, the design scheme of preamplifier based on OPA132 and Second-order active band-pass filter are described, the basic configuration of the circuit and the choice of components are presented, and the circuit is simulated with Multisim 10. The result indicates that the circuit is practical and stable, and can meet the applied requirement of interferometric fiber perturbation sensor.
出处
《现代电子技术》
2011年第4期144-146,154,共4页
Modern Electronics Technique
