公开(公告)号：EP3844984A1

公开(公告)日：2021-07-07

申请号：EP19780065.9

申请日：2019-09-17

申请人： Rosemount Inc.

发明人： SCHNAARE, Theodore Henry ,  KARSCHNIA, Robert J. ,  ROBINSON, Cory ,  KIELB, John Allan ,  WEINBERGER, Robert ,  LOVEGREN, Eric Russell ,  ROTVOLD, Eric Darrell ,  JOHNSON, James A. ,  NEUHARTH, Jared

IPC分类号： H04W4/02 ,  G01S5/00

公开(公告)号：EP2786483B1

公开(公告)日：2019-01-09

申请号：EP12852620.9

申请日：2012-11-14

申请人： Rosemount Inc.

发明人： JOHNSON, James A. ,  NELSON, Richard

IPC分类号： G01F1/075 ,  G01F1/115 ,  G01F1/60 ,  G01F15/06

公开(公告)号：EP2786483A1

公开(公告)日：2014-10-08

申请号：EP12852620.9

申请日：2012-11-14

申请人： Rosemount Inc.

发明人： JOHNSON, James A. ,  NELSON, Richard

IPC分类号： H03D7/00

CPC分类号： G01F1/075 ,  G01F1/115 ,  G01F1/60 ,  G01F15/063

摘要： An electronic circuit for converting higher-frequency output signals from a sensor into lower-frequency input signals for a discrete input wireless transmitter. The circuit includes a differential amplifier, a digital comparator, a digital frequency divider, and a transistor switch. The differential amplifier amplifies the sensor signals as a function of a frequency of the sensor signals. The digital comparator generates a square wave signal by comparing the amplified sensor signals to a fixed reference voltage. The digital frequency divider generates a lower-frequency signal by dividing the square wave signal. The transistor switch generates the lower-frequency input signals for the discrete input wireless transmitter by switching as a function of the lower-frequency signal from the digital frequency divider.