发明授权
US08165830B2 Meter electronics and methods for determining a phase difference between a first sensor signal and a second sensor signal of a flow meter
有权
用于确定流量计的第一传感器信号和第二传感器信号之间的相位差的仪表电子装置和方法
- 专利标题： Meter electronics and methods for determining a phase difference between a first sensor signal and a second sensor signal of a flow meter
- 专利标题（中）： 用于确定流量计的第一传感器信号和第二传感器信号之间的相位差的仪表电子装置和方法
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申请号： US12088613申请日： 2006-10-16
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公开(公告)号： US08165830B2公开(公告)日： 2012-04-24
- 发明人: Craig B McAnally , Denis M Henrot
- 申请人： Craig B McAnally , Denis M Henrot
- 申请人地址： US CO Boulder
- 专利权人： Micro Motion, Inc.
- 当前专利权人： Micro Motion, Inc.
- 当前专利权人地址： US CO Boulder
- 代理机构： The Ollila Law Group LLC
- 国际申请： PCT/US2006/040232 WO 20061016
- 国际公布： WO2007/047524 WO 20070426
- 主分类号： G01F1/00
- IPC分类号： G01F1/00 ; G06F19/00 ; G06F17/40
摘要：
Meter electronics (20) for processing sensor signals in a flow meter is provided according to an embodiment of the invention. The meter electronics (20) includes an interface (201) for receiving a first sensor signal and a second sensor signal and a processing system (203) in communication with the interface (201) and configured to receive the first sensor signal and the second sensor signal, generate a ninety degree phase shift from the first sensor signal, and compute a frequency from the first sensor signal and the ninety degree phase shift. The processing system (203) is further configured to generate sine and cosine signals using the frequency, and quadrature demodulate the first sensor signal and the second sensor signal using the sine and cosine signals in order to determine the phase difference.
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