磁致伸缩液位计信号调理电路设计与仿真分析

Design and Simulation Analysis of Signal Adjust Circuit for magnetostriction liquidometer

为提高磁致伸缩液位计的信噪比和稳定性,消除杂波对液位计测量准确性的干扰,以量程小于2m的微型磁致伸缩液位计为研究对象,设计了二阶有源带通选频放大电路,并利用Multisim软件进行仿真分析,论证了该调理方案提高微型磁致伸缩液位计感应信号信噪比和抗干扰性的可行性。

In order to improve the SNR and stability of magnetostriction liquidometer,and to eliminate the interference of clutter to the measurement accuracy of magnetostriction liquidometer,taking micro magnetostriction liquidometer with a range of less than 2 mas research object,the frequency selective amplification circuit with second-order active band-pass is designed,and Multisim software is used for simulation analysis.It demonstrates the feasibility of improving the SNR and anti-interference of the micro magnetostriction liquidometer.