基于核磁共振两相流的信号调理模块设计

Signal conditioning circuit design based on nuclear magnetic resonance two-phase flow

核磁共振技术的飞速发展很好的弥补了传统测量方法在两相流领域应用时的缺陷,针对核磁共振法在对油水两相流检测时感应回波信号幅度十分微弱、频率较高和信噪比过低的特点,设计了一套用于提高信号质量,利于数据采集的信号调理电路模块。经过实验测试,电路性能良好,能够满足设计要求。

The rapid development of NMR technology has made up for the shortcomings of the traditional measurement method in the field of two-phase flow. For the NMR method, when detecting the oilwater two-phase flow, the amplitude of the induced echo signal is very weak, the frequency is high, and the signal noise with the feature of being too low, a set of signal conditioning circuit modules designed to improve signal quality and facilitate data acquisition is designed. After experimental testing, the circuit performance is good and can meet the design requirements.