液滴分析仪传感信号处理方式的研究

A Method Study on the FLDA Signal Processing

电容、光纤液滴分析仪 FCDA (Fiber- Capacitive Drop Analyzer)是一种新型液体分析仪器 ,该仪器可以得到反应液体综合特性的“液滴指纹图”。本文将详细的描述液滴分析仪的传感信号处理电路 ,包括前置放大、分离滤波等电路。通过对部分样品测试实验 ,得到具有可比性的液滴指纹图 ,证明传感信号处理电路可以满足液滴分析仪的具体要求。

The fiber capacitive drop analyzer (FCDA) is a late model liquid analyzing instrument.The multi characteristics of the liquid will be shown by the volume based fiber drop trace(VFDT) of the instrument.This paper describes the processing circuit of the sensor signals,which includes photoelectric conversion,preamplification circuit and signal separation filter circuit.Proved by test,those circuits have down well and satisfied the requirement of instrument.