【摘要】 分析了电容式物位测量仪挂料产生的原因及其对测量的影响,提出采用斩波积分方法消除或减小挂料影响,提高信噪比,设计了基于MSP430F149的数字式射频导纳物位仪,并给出了硬件原理框图。更多还原

【Abstract】 Through analyzing the reasons which causing probe attachment and the effects on the measure result,a chopper integral method was proposed to eliminate or reduce the probe attachment influence so that signal noise ratio can be improved; and a MSP430F149-based digital RF admittance level meter was developed,including hardware block diagram.更多还原