LINE NOISE ANALYSIS AND DETECTION AND MEASUREMENT ERROR REDUCTION
摘要
A method includes sensing a process parameter to generate a sensor signal that includes a process signal and line noise components (102), digitizing the sensor signal at a sample rate (102), detecting line noise zero crossings in the sensor signal (104), determining a line noise frequency as a function of the detected line noise zero crossings (106), and adjusting the sample rate as a function of the line noise frequency to reduce an impact of line noise on the digitized sensor signal (110).
申请公布号
WO2010118091(A2)
申请公布日期
2010.10.14
申请号
WO2010US30179
申请日期
2010.04.07
申请人
ROSEMOUNT INC.;RUD, JASON, HAROLD;ARNTSON, DOUGLAS, WAYNE